| 3 3 1 2 1 2 1 1 3 1 1 1 2 1 1 1 1 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 | // SPDX-License-Identifier: GPL-2.0 /* * Driver for Meywa-Denki & KAYAC YUREX * * Copyright (C) 2010 Tomoki Sekiyama (tomoki.sekiyama@gmail.com) */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/kref.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/hid.h> #define DRIVER_AUTHOR "Tomoki Sekiyama" #define DRIVER_DESC "Driver for Meywa-Denki & KAYAC YUREX" #define YUREX_VENDOR_ID 0x0c45 #define YUREX_PRODUCT_ID 0x1010 #define CMD_ACK '!' #define CMD_ANIMATE 'A' #define CMD_COUNT 'C' #define CMD_LED 'L' #define CMD_READ 'R' #define CMD_SET 'S' #define CMD_VERSION 'V' #define CMD_EOF 0x0d #define CMD_PADDING 0xff #define YUREX_BUF_SIZE 8 #define YUREX_WRITE_TIMEOUT (HZ*2) /* table of devices that work with this driver */ static struct usb_device_id yurex_table[] = { { USB_DEVICE(YUREX_VENDOR_ID, YUREX_PRODUCT_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, yurex_table); #ifdef CONFIG_USB_DYNAMIC_MINORS #define YUREX_MINOR_BASE 0 #else #define YUREX_MINOR_BASE 192 #endif /* Structure to hold all of our device specific stuff */ struct usb_yurex { struct usb_device *udev; struct usb_interface *interface; __u8 int_in_endpointAddr; struct urb *urb; /* URB for interrupt in */ unsigned char *int_buffer; /* buffer for intterupt in */ struct urb *cntl_urb; /* URB for control msg */ struct usb_ctrlrequest *cntl_req; /* req for control msg */ unsigned char *cntl_buffer; /* buffer for control msg */ struct kref kref; struct mutex io_mutex; unsigned long disconnected:1; struct fasync_struct *async_queue; wait_queue_head_t waitq; spinlock_t lock; __s64 bbu; /* BBU from device */ }; #define to_yurex_dev(d) container_of(d, struct usb_yurex, kref) static struct usb_driver yurex_driver; static const struct file_operations yurex_fops; static void yurex_control_callback(struct urb *urb) { struct usb_yurex *dev = urb->context; int status = urb->status; if (status) { dev_err(&urb->dev->dev, "%s - control failed: %d\n", __func__, status); wake_up_interruptible(&dev->waitq); return; } /* on success, sender woken up by CMD_ACK int in, or timeout */ } static void yurex_delete(struct kref *kref) { struct usb_yurex *dev = to_yurex_dev(kref); dev_dbg(&dev->interface->dev, "%s\n", __func__); if (dev->cntl_urb) { usb_kill_urb(dev->cntl_urb); kfree(dev->cntl_req); usb_free_coherent(dev->udev, YUREX_BUF_SIZE, dev->cntl_buffer, dev->cntl_urb->transfer_dma); usb_free_urb(dev->cntl_urb); } if (dev->urb) { usb_kill_urb(dev->urb); usb_free_coherent(dev->udev, YUREX_BUF_SIZE, dev->int_buffer, dev->urb->transfer_dma); usb_free_urb(dev->urb); } usb_put_intf(dev->interface); usb_put_dev(dev->udev); kfree(dev); } /* * usb class driver info in order to get a minor number from the usb core, * and to have the device registered with the driver core */ static struct usb_class_driver yurex_class = { .name = "yurex%d", .fops = &yurex_fops, .minor_base = YUREX_MINOR_BASE, }; static void yurex_interrupt(struct urb *urb) { struct usb_yurex *dev = urb->context; unsigned char *buf = dev->int_buffer; int status = urb->status; unsigned long flags; int retval, i; switch (status) { case 0: /*success*/ break; /* The device is terminated or messed up, give up */ case -EOVERFLOW: dev_err(&dev->interface->dev, "%s - overflow with length %d, actual length is %d\n", __func__, YUREX_BUF_SIZE, dev->urb->actual_length); return; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: case -EILSEQ: case -EPROTO: case -ETIME: return; default: dev_err(&dev->interface->dev, "%s - unknown status received: %d\n", __func__, status); return; } /* handle received message */ switch (buf[0]) { case CMD_COUNT: case CMD_READ: if (buf[6] == CMD_EOF) { spin_lock_irqsave(&dev->lock, flags); dev->bbu = 0; for (i = 1; i < 6; i++) { dev->bbu += buf[i]; if (i != 5) dev->bbu <<= 8; } dev_dbg(&dev->interface->dev, "%s count: %lld\n", __func__, dev->bbu); spin_unlock_irqrestore(&dev->lock, flags); kill_fasync(&dev->async_queue, SIGIO, POLL_IN); } else dev_dbg(&dev->interface->dev, "data format error - no EOF\n"); break; case CMD_ACK: dev_dbg(&dev->interface->dev, "%s ack: %c\n", __func__, buf[1]); wake_up_interruptible(&dev->waitq); break; } retval = usb_submit_urb(dev->urb, GFP_ATOMIC); if (retval) { dev_err(&dev->interface->dev, "%s - usb_submit_urb failed: %d\n", __func__, retval); } } static int yurex_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_yurex *dev; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int retval = -ENOMEM; DEFINE_WAIT(wait); int res; /* allocate memory for our device state and initialize it */ dev = kzalloc_obj(*dev); if (!dev) goto error; kref_init(&dev->kref); mutex_init(&dev->io_mutex); spin_lock_init(&dev->lock); init_waitqueue_head(&dev->waitq); dev->udev = usb_get_dev(interface_to_usbdev(interface)); dev->interface = usb_get_intf(interface); /* set up the endpoint information */ iface_desc = interface->cur_altsetting; res = usb_find_int_in_endpoint(iface_desc, &endpoint); if (res) { dev_err(&interface->dev, "Could not find endpoints\n"); retval = res; goto error; } dev->int_in_endpointAddr = endpoint->bEndpointAddress; /* allocate control URB */ dev->cntl_urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->cntl_urb) goto error; /* allocate buffer for control req */ dev->cntl_req = kmalloc(YUREX_BUF_SIZE, GFP_KERNEL); if (!dev->cntl_req) goto error; /* allocate buffer for control msg */ dev->cntl_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE, GFP_KERNEL, &dev->cntl_urb->transfer_dma); if (!dev->cntl_buffer) { dev_err(&interface->dev, "Could not allocate cntl_buffer\n"); goto error; } /* configure control URB */ dev->cntl_req->bRequestType = USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; dev->cntl_req->bRequest = HID_REQ_SET_REPORT; dev->cntl_req->wValue = cpu_to_le16((HID_OUTPUT_REPORT + 1) << 8); dev->cntl_req->wIndex = cpu_to_le16(iface_desc->desc.bInterfaceNumber); dev->cntl_req->wLength = cpu_to_le16(YUREX_BUF_SIZE); usb_fill_control_urb(dev->cntl_urb, dev->udev, usb_sndctrlpipe(dev->udev, 0), (void *)dev->cntl_req, dev->cntl_buffer, YUREX_BUF_SIZE, yurex_control_callback, dev); dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* allocate interrupt URB */ dev->urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->urb) goto error; /* allocate buffer for interrupt in */ dev->int_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE, GFP_KERNEL, &dev->urb->transfer_dma); if (!dev->int_buffer) { dev_err(&interface->dev, "Could not allocate int_buffer\n"); goto error; } /* configure interrupt URB */ usb_fill_int_urb(dev->urb, dev->udev, usb_rcvintpipe(dev->udev, dev->int_in_endpointAddr), dev->int_buffer, YUREX_BUF_SIZE, yurex_interrupt, dev, 1); dev->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; dev->bbu = -1; if (usb_submit_urb(dev->urb, GFP_KERNEL)) { retval = -EIO; dev_err(&interface->dev, "Could not submitting URB\n"); goto error; } /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); /* we can register the device now, as it is ready */ retval = usb_register_dev(interface, &yurex_class); if (retval) { dev_err(&interface->dev, "Not able to get a minor for this device.\n"); usb_set_intfdata(interface, NULL); goto error; } dev_info(&interface->dev, "USB YUREX device now attached to Yurex #%d\n", interface->minor); return 0; error: if (dev) /* this frees allocated memory */ kref_put(&dev->kref, yurex_delete); return retval; } static void yurex_disconnect(struct usb_interface *interface) { struct usb_yurex *dev; int minor = interface->minor; dev = usb_get_intfdata(interface); usb_set_intfdata(interface, NULL); /* give back our minor */ usb_deregister_dev(interface, &yurex_class); /* prevent more I/O from starting */ usb_poison_urb(dev->urb); usb_poison_urb(dev->cntl_urb); mutex_lock(&dev->io_mutex); dev->disconnected = 1; mutex_unlock(&dev->io_mutex); /* wakeup waiters */ kill_fasync(&dev->async_queue, SIGIO, POLL_IN); wake_up_interruptible(&dev->waitq); /* decrement our usage count */ kref_put(&dev->kref, yurex_delete); dev_info(&interface->dev, "USB YUREX #%d now disconnected\n", minor); } static struct usb_driver yurex_driver = { .name = "yurex", .probe = yurex_probe, .disconnect = yurex_disconnect, .id_table = yurex_table, }; static int yurex_fasync(int fd, struct file *file, int on) { struct usb_yurex *dev; dev = file->private_data; return fasync_helper(fd, file, on, &dev->async_queue); } static int yurex_open(struct inode *inode, struct file *file) { struct usb_yurex *dev; struct usb_interface *interface; int subminor; int retval = 0; subminor = iminor(inode); interface = usb_find_interface(&yurex_driver, subminor); if (!interface) { printk(KERN_ERR "%s - error, can't find device for minor %d", __func__, subminor); retval = -ENODEV; goto exit; } dev = usb_get_intfdata(interface); if (!dev) { retval = -ENODEV; goto exit; } /* increment our usage count for the device */ kref_get(&dev->kref); /* save our object in the file's private structure */ mutex_lock(&dev->io_mutex); file->private_data = dev; mutex_unlock(&dev->io_mutex); exit: return retval; } static int yurex_release(struct inode *inode, struct file *file) { struct usb_yurex *dev; dev = file->private_data; if (dev == NULL) return -ENODEV; /* decrement the count on our device */ kref_put(&dev->kref, yurex_delete); return 0; } static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { struct usb_yurex *dev; int len; char in_buffer[20]; unsigned long flags; dev = file->private_data; mutex_lock(&dev->io_mutex); if (dev->disconnected) { /* already disconnected */ mutex_unlock(&dev->io_mutex); return -ENODEV; } spin_lock_irqsave(&dev->lock, flags); len = snprintf(in_buffer, 20, "%lld\n", dev->bbu); spin_unlock_irqrestore(&dev->lock, flags); mutex_unlock(&dev->io_mutex); if (WARN_ON_ONCE(len >= sizeof(in_buffer))) return -EIO; return simple_read_from_buffer(buffer, count, ppos, in_buffer, len); } static ssize_t yurex_write(struct file *file, const char __user *user_buffer, size_t count, loff_t *ppos) { struct usb_yurex *dev; int i, set = 0, retval = 0; char buffer[16 + 1]; char *data = buffer; unsigned long long c, c2 = 0; signed long timeout = 0; DEFINE_WAIT(wait); count = min(sizeof(buffer) - 1, count); dev = file->private_data; /* verify that we actually have some data to write */ if (count == 0) goto error; retval = mutex_lock_interruptible(&dev->io_mutex); if (retval < 0) return -EINTR; if (dev->disconnected) { /* already disconnected */ mutex_unlock(&dev->io_mutex); retval = -ENODEV; goto error; } if (copy_from_user(buffer, user_buffer, count)) { mutex_unlock(&dev->io_mutex); retval = -EFAULT; goto error; } buffer[count] = 0; memset(dev->cntl_buffer, CMD_PADDING, YUREX_BUF_SIZE); switch (buffer[0]) { case CMD_ANIMATE: case CMD_LED: dev->cntl_buffer[0] = buffer[0]; dev->cntl_buffer[1] = buffer[1]; dev->cntl_buffer[2] = CMD_EOF; break; case CMD_READ: case CMD_VERSION: dev->cntl_buffer[0] = buffer[0]; dev->cntl_buffer[1] = 0x00; dev->cntl_buffer[2] = CMD_EOF; break; case CMD_SET: data++; fallthrough; case '0' ... '9': set = 1; c = c2 = simple_strtoull(data, NULL, 0); dev->cntl_buffer[0] = CMD_SET; for (i = 1; i < 6; i++) { dev->cntl_buffer[i] = (c>>32) & 0xff; c <<= 8; } buffer[6] = CMD_EOF; break; default: mutex_unlock(&dev->io_mutex); return -EINVAL; } /* send the data as the control msg */ prepare_to_wait(&dev->waitq, &wait, TASK_INTERRUPTIBLE); dev_dbg(&dev->interface->dev, "%s - submit %c\n", __func__, dev->cntl_buffer[0]); retval = usb_submit_urb(dev->cntl_urb, GFP_ATOMIC); if (retval >= 0) timeout = schedule_timeout(YUREX_WRITE_TIMEOUT); finish_wait(&dev->waitq, &wait); /* make sure URB is idle after timeout or (spurious) CMD_ACK */ usb_kill_urb(dev->cntl_urb); mutex_unlock(&dev->io_mutex); if (retval < 0) { dev_err(&dev->interface->dev, "%s - failed to send bulk msg, error %d\n", __func__, retval); goto error; } if (set && timeout) { spin_lock_irq(&dev->lock); dev->bbu = c2; spin_unlock_irq(&dev->lock); } return timeout ? count : -EIO; error: return retval; } static const struct file_operations yurex_fops = { .owner = THIS_MODULE, .read = yurex_read, .write = yurex_write, .open = yurex_open, .release = yurex_release, .fasync = yurex_fasync, .llseek = default_llseek, }; module_usb_driver(yurex_driver); MODULE_DESCRIPTION("USB YUREX driver support"); MODULE_LICENSE("GPL"); |
| 10 28 10 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | #undef TRACE_SYSTEM #define TRACE_SYSTEM irq_matrix #if !defined(_TRACE_IRQ_MATRIX_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_IRQ_MATRIX_H #include <linux/tracepoint.h> struct irq_matrix; struct cpumap; DECLARE_EVENT_CLASS(irq_matrix_global, TP_PROTO(struct irq_matrix *matrix), TP_ARGS(matrix), TP_STRUCT__entry( __field( unsigned int, online_maps ) __field( unsigned int, global_available ) __field( unsigned int, global_reserved ) __field( unsigned int, total_allocated ) ), TP_fast_assign( __entry->online_maps = matrix->online_maps; __entry->global_available = matrix->global_available; __entry->global_reserved = matrix->global_reserved; __entry->total_allocated = matrix->total_allocated; ), TP_printk("online_maps=%d global_avl=%u, global_rsvd=%u, total_alloc=%u", __entry->online_maps, __entry->global_available, __entry->global_reserved, __entry->total_allocated) ); DECLARE_EVENT_CLASS(irq_matrix_global_update, TP_PROTO(int bit, struct irq_matrix *matrix), TP_ARGS(bit, matrix), TP_STRUCT__entry( __field( int, bit ) __field( unsigned int, online_maps ) __field( unsigned int, global_available ) __field( unsigned int, global_reserved ) __field( unsigned int, total_allocated ) ), TP_fast_assign( __entry->bit = bit; __entry->online_maps = matrix->online_maps; __entry->global_available = matrix->global_available; __entry->global_reserved = matrix->global_reserved; __entry->total_allocated = matrix->total_allocated; ), TP_printk("bit=%d online_maps=%d global_avl=%u, global_rsvd=%u, total_alloc=%u", __entry->bit, __entry->online_maps, __entry->global_available, __entry->global_reserved, __entry->total_allocated) ); DECLARE_EVENT_CLASS(irq_matrix_cpu, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap), TP_STRUCT__entry( __field( int, bit ) __field( unsigned int, cpu ) __field( bool, online ) __field( unsigned int, available ) __field( unsigned int, allocated ) __field( unsigned int, managed ) __field( unsigned int, online_maps ) __field( unsigned int, global_available ) __field( unsigned int, global_reserved ) __field( unsigned int, total_allocated ) ), TP_fast_assign( __entry->bit = bit; __entry->cpu = cpu; __entry->online = cmap->online; __entry->available = cmap->available; __entry->allocated = cmap->allocated; __entry->managed = cmap->managed; __entry->online_maps = matrix->online_maps; __entry->global_available = matrix->global_available; __entry->global_reserved = matrix->global_reserved; __entry->total_allocated = matrix->total_allocated; ), TP_printk("bit=%d cpu=%u online=%d avl=%u alloc=%u managed=%u online_maps=%u global_avl=%u, global_rsvd=%u, total_alloc=%u", __entry->bit, __entry->cpu, __entry->online, __entry->available, __entry->allocated, __entry->managed, __entry->online_maps, __entry->global_available, __entry->global_reserved, __entry->total_allocated) ); DEFINE_EVENT(irq_matrix_global, irq_matrix_online, TP_PROTO(struct irq_matrix *matrix), TP_ARGS(matrix) ); DEFINE_EVENT(irq_matrix_global, irq_matrix_offline, TP_PROTO(struct irq_matrix *matrix), TP_ARGS(matrix) ); DEFINE_EVENT(irq_matrix_global, irq_matrix_reserve, TP_PROTO(struct irq_matrix *matrix), TP_ARGS(matrix) ); DEFINE_EVENT(irq_matrix_global, irq_matrix_remove_reserved, TP_PROTO(struct irq_matrix *matrix), TP_ARGS(matrix) ); DEFINE_EVENT(irq_matrix_global_update, irq_matrix_assign_system, TP_PROTO(int bit, struct irq_matrix *matrix), TP_ARGS(bit, matrix) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_reserve_managed, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_remove_managed, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_alloc_managed, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_assign, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_alloc, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); DEFINE_EVENT(irq_matrix_cpu, irq_matrix_free, TP_PROTO(int bit, unsigned int cpu, struct irq_matrix *matrix, struct cpumap *cmap), TP_ARGS(bit, cpu, matrix, cmap) ); #endif /* _TRACE_IRQ_H */ /* This part must be outside protection */ #include <trace/define_trace.h> |
| 17 17 17 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Host Side support for RNDIS Networking Links * Copyright (C) 2005 by David Brownell */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/workqueue.h> #include <linux/slab.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/usb/cdc.h> #include <linux/usb/usbnet.h> #include <linux/usb/rndis_host.h> /* * RNDIS is NDIS remoted over USB. It's a MSFT variant of CDC ACM ... of * course ACM was intended for modems, not Ethernet links! USB's standard * for Ethernet links is "CDC Ethernet", which is significantly simpler. * * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete. Issues * include: * - Power management in particular relies on information that's scattered * through other documentation, and which is incomplete or incorrect even * there. * - There are various undocumented protocol requirements, such as the * need to send unused garbage in control-OUT messages. * - In some cases, MS-Windows will emit undocumented requests; this * matters more to peripheral implementations than host ones. * * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync". * * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and * currently rare) "Ethernet Emulation Model" (EEM). */ /* * RNDIS notifications from device: command completion; "reverse" * keepalives; etc */ void rndis_status(struct usbnet *dev, struct urb *urb) { netdev_dbg(dev->net, "rndis status urb, len %d stat %d\n", urb->actual_length, urb->status); // FIXME for keepalives, respond immediately (asynchronously) // if not an RNDIS status, do like cdc_status(dev,urb) does } EXPORT_SYMBOL_GPL(rndis_status); /* * RNDIS indicate messages. */ static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg, int buflen) { struct cdc_state *info = (void *)&dev->data; struct device *udev = &info->control->dev; if (dev->driver_info->indication) { dev->driver_info->indication(dev, msg, buflen); } else { u32 status = le32_to_cpu(msg->status); switch (status) { case RNDIS_STATUS_MEDIA_CONNECT: dev_info(udev, "rndis media connect\n"); break; case RNDIS_STATUS_MEDIA_DISCONNECT: dev_info(udev, "rndis media disconnect\n"); break; default: dev_info(udev, "rndis indication: 0x%08x\n", status); } } } /* * RPC done RNDIS-style. Caller guarantees: * - message is properly byteswapped * - there's no other request pending * - buf can hold up to 1KB response (required by RNDIS spec) * On return, the first few entries are already byteswapped. * * Call context is likely probe(), before interface name is known, * which is why we won't try to use it in the diagnostics. */ int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen) { struct cdc_state *info = (void *) &dev->data; struct usb_cdc_notification notification; int master_ifnum; int retval; int partial; unsigned count; u32 xid = 0, msg_len, request_id, msg_type, rsp, status; /* REVISIT when this gets called from contexts other than probe() or * disconnect(): either serialize, or dispatch responses on xid */ msg_type = le32_to_cpu(buf->msg_type); /* Issue the request; xid is unique, don't bother byteswapping it */ if (likely(msg_type != RNDIS_MSG_HALT && msg_type != RNDIS_MSG_RESET)) { xid = dev->xid++; if (!xid) xid = dev->xid++; buf->request_id = (__force __le32) xid; } master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber; retval = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), USB_CDC_SEND_ENCAPSULATED_COMMAND, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, master_ifnum, buf, le32_to_cpu(buf->msg_len), RNDIS_CONTROL_TIMEOUT_MS); if (unlikely(retval < 0 || xid == 0)) return retval; /* Some devices don't respond on the control channel until * polled on the status channel, so do that first. */ if (dev->driver_info->data & RNDIS_DRIVER_DATA_POLL_STATUS) { retval = usb_interrupt_msg( dev->udev, usb_rcvintpipe(dev->udev, dev->status->desc.bEndpointAddress), ¬ification, sizeof(notification), &partial, RNDIS_CONTROL_TIMEOUT_MS); if (unlikely(retval < 0)) return retval; } /* Poll the control channel; the request probably completed immediately */ rsp = le32_to_cpu(buf->msg_type) | RNDIS_MSG_COMPLETION; for (count = 0; count < 10; count++) { memset(buf, 0, CONTROL_BUFFER_SIZE); retval = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), USB_CDC_GET_ENCAPSULATED_RESPONSE, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, master_ifnum, buf, buflen, RNDIS_CONTROL_TIMEOUT_MS); if (likely(retval >= 8)) { msg_type = le32_to_cpu(buf->msg_type); msg_len = le32_to_cpu(buf->msg_len); status = le32_to_cpu(buf->status); request_id = (__force u32) buf->request_id; if (likely(msg_type == rsp)) { if (likely(request_id == xid)) { if (unlikely(rsp == RNDIS_MSG_RESET_C)) return 0; if (likely(RNDIS_STATUS_SUCCESS == status)) return 0; dev_dbg(&info->control->dev, "rndis reply status %08x\n", status); return -EL3RST; } dev_dbg(&info->control->dev, "rndis reply id %d expected %d\n", request_id, xid); /* then likely retry */ } else switch (msg_type) { case RNDIS_MSG_INDICATE: /* fault/event */ rndis_msg_indicate(dev, (void *)buf, buflen); break; case RNDIS_MSG_KEEPALIVE: { /* ping */ struct rndis_keepalive_c *msg = (void *)buf; msg->msg_type = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); msg->msg_len = cpu_to_le32(sizeof *msg); msg->status = cpu_to_le32(RNDIS_STATUS_SUCCESS); retval = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), USB_CDC_SEND_ENCAPSULATED_COMMAND, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, master_ifnum, msg, sizeof *msg, RNDIS_CONTROL_TIMEOUT_MS); if (unlikely(retval < 0)) dev_dbg(&info->control->dev, "rndis keepalive err %d\n", retval); } break; default: dev_dbg(&info->control->dev, "unexpected rndis msg %08x len %d\n", le32_to_cpu(buf->msg_type), msg_len); } } else { /* device probably issued a protocol stall; ignore */ dev_dbg(&info->control->dev, "rndis response error, code %d\n", retval); } msleep(40); } dev_dbg(&info->control->dev, "rndis response timeout\n"); return -ETIMEDOUT; } EXPORT_SYMBOL_GPL(rndis_command); /* * rndis_query: * * Performs a query for @oid along with 0 or more bytes of payload as * specified by @in_len. If @reply_len is not set to -1 then the reply * length is checked against this value, resulting in an error if it * doesn't match. * * NOTE: Adding a payload exactly or greater than the size of the expected * response payload is an evident requirement MSFT added for ActiveSync. * * The only exception is for OIDs that return a variably sized response, * in which case no payload should be added. This undocumented (and * nonsensical!) issue was found by sniffing protocol requests from the * ActiveSync 4.1 Windows driver. */ static int rndis_query(struct usbnet *dev, struct usb_interface *intf, void *buf, u32 oid, u32 in_len, void **reply, int *reply_len) { int retval; union { void *buf; struct rndis_msg_hdr *header; struct rndis_query *get; struct rndis_query_c *get_c; } u; u32 off, len; u.buf = buf; memset(u.get, 0, sizeof *u.get + in_len); u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY); u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len); u.get->oid = cpu_to_le32(oid); u.get->len = cpu_to_le32(in_len); u.get->offset = cpu_to_le32(20); retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); if (unlikely(retval < 0)) { dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n", oid, retval); return retval; } off = le32_to_cpu(u.get_c->offset); len = le32_to_cpu(u.get_c->len); if (unlikely((off > CONTROL_BUFFER_SIZE - 8) || (len > CONTROL_BUFFER_SIZE - 8 - off))) goto response_error; if (*reply_len != -1 && len != *reply_len) goto response_error; *reply = (unsigned char *) &u.get_c->request_id + off; *reply_len = len; return retval; response_error: dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) " "invalid response - off %d len %d\n", oid, off, len); return -EDOM; } /* same as usbnet_netdev_ops but MTU change not allowed */ static const struct net_device_ops rndis_netdev_ops = { .ndo_open = usbnet_open, .ndo_stop = usbnet_stop, .ndo_start_xmit = usbnet_start_xmit, .ndo_tx_timeout = usbnet_tx_timeout, .ndo_get_stats64 = dev_get_tstats64, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; int generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) { int retval; struct net_device *net = dev->net; struct cdc_state *info = (void *) &dev->data; union { void *buf; struct rndis_msg_hdr *header; struct rndis_init *init; struct rndis_init_c *init_c; struct rndis_query *get; struct rndis_query_c *get_c; struct rndis_set *set; struct rndis_set_c *set_c; struct rndis_halt *halt; } u; u32 tmp; __le32 phym_unspec, *phym; int reply_len; unsigned char *bp; /* we can't rely on i/o from stack working, or stack allocation */ u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); if (!u.buf) return -ENOMEM; retval = usbnet_generic_cdc_bind(dev, intf); if (retval < 0) goto fail; u.init->msg_type = cpu_to_le32(RNDIS_MSG_INIT); u.init->msg_len = cpu_to_le32(sizeof *u.init); u.init->major_version = cpu_to_le32(1); u.init->minor_version = cpu_to_le32(0); /* max transfer (in spec) is 0x4000 at full speed, but for * TX we'll stick to one Ethernet packet plus RNDIS framing. * For RX we handle drivers that zero-pad to end-of-packet. * Don't let userspace change these settings. * * NOTE: there still seems to be weirdness here, as if we need * to do some more things to make sure WinCE targets accept this. * They default to jumbograms of 8KB or 16KB, which is absurd * for such low data rates and which is also more than Linux * can usually expect to allocate for SKB data... */ net->hard_header_len += sizeof (struct rndis_data_hdr); dev->hard_mtu = net->mtu + net->hard_header_len; dev->maxpacket = usb_maxpacket(dev->udev, dev->out); if (dev->maxpacket == 0) { netif_dbg(dev, probe, dev->net, "dev->maxpacket can't be 0\n"); retval = -EINVAL; goto fail_and_release; } dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); dev->rx_urb_size &= ~(dev->maxpacket - 1); u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); net->netdev_ops = &rndis_netdev_ops; retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); if (unlikely(retval < 0)) { /* it might not even be an RNDIS device!! */ dev_err(&intf->dev, "RNDIS init failed, %d\n", retval); goto fail_and_release; } tmp = le32_to_cpu(u.init_c->max_transfer_size); if (tmp < dev->hard_mtu) { if (tmp <= net->hard_header_len) { dev_err(&intf->dev, "dev can't take %u byte packets (max %u)\n", dev->hard_mtu, tmp); retval = -EINVAL; goto halt_fail_and_release; } dev_warn(&intf->dev, "dev can't take %u byte packets (max %u), " "adjusting MTU to %u\n", dev->hard_mtu, tmp, tmp - net->hard_header_len); dev->hard_mtu = tmp; net->mtu = dev->hard_mtu - net->hard_header_len; } /* REVISIT: peripheral "alignment" request is ignored ... */ dev_dbg(&intf->dev, "hard mtu %u (%u from dev), rx buflen %zu, align %d\n", dev->hard_mtu, tmp, dev->rx_urb_size, 1 << le32_to_cpu(u.init_c->packet_alignment)); /* module has some device initialization code needs to be done right * after RNDIS_INIT */ if (dev->driver_info->early_init && dev->driver_info->early_init(dev) != 0) goto halt_fail_and_release; /* Check physical medium */ phym = NULL; reply_len = sizeof *phym; retval = rndis_query(dev, intf, u.buf, RNDIS_OID_GEN_PHYSICAL_MEDIUM, reply_len, (void **)&phym, &reply_len); if (retval != 0 || !phym) { /* OID is optional so don't fail here. */ phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED); phym = &phym_unspec; } if ((flags & FLAG_RNDIS_PHYM_WIRELESS) && le32_to_cpup(phym) != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { netif_dbg(dev, probe, dev->net, "driver requires wireless physical medium, but device is not\n"); retval = -ENODEV; goto halt_fail_and_release; } if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) && le32_to_cpup(phym) == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { netif_dbg(dev, probe, dev->net, "driver requires non-wireless physical medium, but device is wireless.\n"); retval = -ENODEV; goto halt_fail_and_release; } /* Get designated host ethernet address */ reply_len = ETH_ALEN; retval = rndis_query(dev, intf, u.buf, RNDIS_OID_802_3_PERMANENT_ADDRESS, 48, (void **) &bp, &reply_len); if (unlikely(retval< 0)) { dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval); goto halt_fail_and_release; } eth_hw_addr_set(net, bp); /* set a nonzero filter to enable data transfers */ memset(u.set, 0, sizeof *u.set); u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET); u.set->msg_len = cpu_to_le32(4 + sizeof *u.set); u.set->oid = cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER); u.set->len = cpu_to_le32(4); u.set->offset = cpu_to_le32((sizeof *u.set) - 8); *(__le32 *)(u.buf + sizeof *u.set) = cpu_to_le32(RNDIS_DEFAULT_FILTER); retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); if (unlikely(retval < 0)) { dev_err(&intf->dev, "rndis set packet filter, %d\n", retval); goto halt_fail_and_release; } retval = 0; kfree(u.buf); return retval; halt_fail_and_release: memset(u.halt, 0, sizeof *u.halt); u.halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); u.halt->msg_len = cpu_to_le32(sizeof *u.halt); (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE); fail_and_release: usb_set_intfdata(info->data, NULL); usb_driver_release_interface(driver_of(intf), info->data); info->data = NULL; fail: kfree(u.buf); return retval; } EXPORT_SYMBOL_GPL(generic_rndis_bind); static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) { return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); } static int zte_rndis_bind(struct usbnet *dev, struct usb_interface *intf) { int status = rndis_bind(dev, intf); if (!status && (dev->net->dev_addr[0] & 0x02)) eth_hw_addr_random(dev->net); return status; } void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) { struct rndis_halt *halt; /* try to clear any rndis state/activity (no i/o from stack!) */ halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); if (halt) { halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); halt->msg_len = cpu_to_le32(sizeof *halt); (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE); kfree(halt); } usbnet_cdc_unbind(dev, intf); } EXPORT_SYMBOL_GPL(rndis_unbind); /* * DATA -- host must not write zlps */ int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { bool dst_mac_fixup; /* This check is no longer done by usbnet */ if (skb->len < dev->net->hard_header_len) return 0; dst_mac_fixup = !!(dev->driver_info->data & RNDIS_DRIVER_DATA_DST_MAC_FIXUP); /* peripheral may have batched packets to us... */ while (likely(skb->len)) { struct rndis_data_hdr *hdr = (void *)skb->data; struct sk_buff *skb2; u32 msg_type, msg_len, data_offset, data_len; msg_type = le32_to_cpu(hdr->msg_type); msg_len = le32_to_cpu(hdr->msg_len); data_offset = le32_to_cpu(hdr->data_offset); data_len = le32_to_cpu(hdr->data_len); /* don't choke if we see oob, per-packet data, etc */ if (unlikely(msg_type != RNDIS_MSG_PACKET || skb->len < msg_len || (data_offset + data_len + 8) > msg_len)) { dev->net->stats.rx_frame_errors++; netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n", le32_to_cpu(hdr->msg_type), msg_len, data_offset, data_len, skb->len); return 0; } skb_pull(skb, 8 + data_offset); /* at most one packet left? */ if (likely((data_len - skb->len) <= sizeof *hdr)) { skb_trim(skb, data_len); break; } /* try to return all the packets in the batch */ skb2 = skb_clone(skb, GFP_ATOMIC); if (unlikely(!skb2)) break; skb_pull(skb, msg_len - sizeof *hdr); skb_trim(skb2, data_len); if (unlikely(dst_mac_fixup)) usbnet_cdc_zte_rx_fixup(dev, skb2); usbnet_skb_return(dev, skb2); } /* caller will usbnet_skb_return the remaining packet */ if (unlikely(dst_mac_fixup)) usbnet_cdc_zte_rx_fixup(dev, skb); return 1; } EXPORT_SYMBOL_GPL(rndis_rx_fixup); struct sk_buff * rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { struct rndis_data_hdr *hdr; struct sk_buff *skb2; unsigned len = skb->len; if (likely(!skb_cloned(skb))) { int room = skb_headroom(skb); /* enough head room as-is? */ if (unlikely((sizeof *hdr) <= room)) goto fill; /* enough room, but needs to be readjusted? */ room += skb_tailroom(skb); if (likely((sizeof *hdr) <= room)) { skb->data = memmove(skb->head + sizeof *hdr, skb->data, len); skb_set_tail_pointer(skb, len); goto fill; } } /* create a new skb, with the correct size (and tailpad) */ skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags); dev_kfree_skb_any(skb); if (unlikely(!skb2)) return skb2; skb = skb2; /* fill out the RNDIS header. we won't bother trying to batch * packets; Linux minimizes wasted bandwidth through tx queues. */ fill: hdr = __skb_push(skb, sizeof *hdr); memset(hdr, 0, sizeof *hdr); hdr->msg_type = cpu_to_le32(RNDIS_MSG_PACKET); hdr->msg_len = cpu_to_le32(skb->len); hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8); hdr->data_len = cpu_to_le32(len); /* FIXME make the last packet always be short ... */ return skb; } EXPORT_SYMBOL_GPL(rndis_tx_fixup); static const struct driver_info rndis_info = { .description = "RNDIS device", .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, .bind = rndis_bind, .unbind = rndis_unbind, .status = rndis_status, .rx_fixup = rndis_rx_fixup, .tx_fixup = rndis_tx_fixup, }; static const struct driver_info rndis_poll_status_info = { .description = "RNDIS device (poll status before control)", .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, .data = RNDIS_DRIVER_DATA_POLL_STATUS, .bind = rndis_bind, .unbind = rndis_unbind, .status = rndis_status, .rx_fixup = rndis_rx_fixup, .tx_fixup = rndis_tx_fixup, }; static const struct driver_info zte_rndis_info = { .description = "ZTE RNDIS device", .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, .data = RNDIS_DRIVER_DATA_DST_MAC_FIXUP, .bind = zte_rndis_bind, .unbind = rndis_unbind, .status = rndis_status, .rx_fixup = rndis_rx_fixup, .tx_fixup = rndis_tx_fixup, }; /*-------------------------------------------------------------------------*/ static const struct usb_device_id products [] = { { /* 2Wire HomePortal 1000SW */ USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042, USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long) &rndis_poll_status_info, }, { /* Hytera Communications DMR radios' "Radio to PC Network" */ USB_VENDOR_AND_INTERFACE_INFO(0x238b, USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long)&rndis_info, }, { /* ZTE WWAN modules */ USB_VENDOR_AND_INTERFACE_INFO(0x19d2, USB_CLASS_WIRELESS_CONTROLLER, 1, 3), .driver_info = (unsigned long)&zte_rndis_info, }, { /* ZTE WWAN modules, ACM flavour */ USB_VENDOR_AND_INTERFACE_INFO(0x19d2, USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long)&zte_rndis_info, }, { /* RNDIS is MSFT's un-official variant of CDC ACM */ USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long) &rndis_info, }, { /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), .driver_info = (unsigned long) &rndis_poll_status_info, }, { /* RNDIS for tethering */ USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3), .driver_info = (unsigned long) &rndis_info, }, { /* Novatel Verizon USB730L */ USB_INTERFACE_INFO(USB_CLASS_MISC, 4, 1), .driver_info = (unsigned long) &rndis_info, }, { }, // END }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver rndis_driver = { .name = "rndis_host", .id_table = products, .probe = usbnet_probe, .disconnect = usbnet_disconnect, .suspend = usbnet_suspend, .resume = usbnet_resume, .disable_hub_initiated_lpm = 1, }; module_usb_driver(rndis_driver); MODULE_AUTHOR("David Brownell"); MODULE_DESCRIPTION("USB Host side RNDIS driver"); MODULE_LICENSE("GPL"); |
| 245 260 30 3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | /* * net/tipc/core.h: Include file for TIPC global declarations * * Copyright (c) 2005-2006, 2013-2018 Ericsson AB * Copyright (c) 2005-2007, 2010-2013, Wind River Systems * Copyright (c) 2020, Red Hat Inc * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _TIPC_CORE_H #define _TIPC_CORE_H #include <linux/tipc.h> #include <linux/tipc_config.h> #include <linux/tipc_netlink.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/hex.h> #include <linux/mm.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/uaccess.h> #include <linux/interrupt.h> #include <linux/atomic.h> #include <linux/netdevice.h> #include <linux/in.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/rtnetlink.h> #include <linux/etherdevice.h> #include <net/netns/generic.h> #include <linux/rhashtable.h> #include <net/genetlink.h> #include <net/netns/hash.h> #ifdef pr_fmt #undef pr_fmt #endif #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt struct tipc_node; struct tipc_bearer; struct tipc_bc_base; struct tipc_link; struct tipc_topsrv; struct tipc_monitor; #ifdef CONFIG_TIPC_CRYPTO struct tipc_crypto; #endif #define TIPC_MOD_VER "2.0.0" #define NODE_HTABLE_SIZE 512 #define MAX_BEARERS 3 #define TIPC_DEF_MON_THRESHOLD 32 #define NODE_ID_LEN 16 #define NODE_ID_STR_LEN (NODE_ID_LEN * 2 + 1) extern unsigned int tipc_net_id __read_mostly; extern int sysctl_tipc_rmem[3] __read_mostly; extern int sysctl_tipc_named_timeout __read_mostly; struct tipc_net { u8 node_id[NODE_ID_LEN]; u32 node_addr; u32 trial_addr; unsigned long addr_trial_end; char node_id_string[NODE_ID_STR_LEN]; int net_id; int random; bool legacy_addr_format; /* Node table and node list */ spinlock_t node_list_lock; struct hlist_head node_htable[NODE_HTABLE_SIZE]; struct list_head node_list; u32 num_nodes; u32 num_links; /* Neighbor monitoring list */ struct tipc_monitor *monitors[MAX_BEARERS]; int mon_threshold; /* Bearer list */ struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1]; /* Broadcast link */ spinlock_t bclock; struct tipc_bc_base *bcbase; struct tipc_link *bcl; /* Socket hash table */ struct rhashtable sk_rht; /* Name table */ spinlock_t nametbl_lock; struct name_table *nametbl; /* Topology subscription server */ struct tipc_topsrv *topsrv; atomic_t subscription_count; /* Cluster capabilities */ u16 capabilities; /* Tracing of node internal messages */ struct packet_type loopback_pt; #ifdef CONFIG_TIPC_CRYPTO /* TX crypto handler */ struct tipc_crypto *crypto_tx; #endif /* Work item for net finalize */ struct work_struct work; /* The numbers of work queues in schedule */ atomic_t wq_count; }; static inline struct tipc_net *tipc_net(struct net *net) { return net_generic(net, tipc_net_id); } static inline int tipc_netid(struct net *net) { return tipc_net(net)->net_id; } static inline struct list_head *tipc_nodes(struct net *net) { return &tipc_net(net)->node_list; } static inline struct name_table *tipc_name_table(struct net *net) { return tipc_net(net)->nametbl; } static inline struct tipc_topsrv *tipc_topsrv(struct net *net) { return tipc_net(net)->topsrv; } static inline unsigned int tipc_hashfn(u32 addr) { return addr & (NODE_HTABLE_SIZE - 1); } static inline u16 mod(u16 x) { return x & 0xffffu; } static inline int less_eq(u16 left, u16 right) { return mod(right - left) < 32768u; } static inline int more(u16 left, u16 right) { return !less_eq(left, right); } static inline int less(u16 left, u16 right) { return less_eq(left, right) && (mod(right) != mod(left)); } static inline int tipc_in_range(u16 val, u16 min, u16 max) { return !less(val, min) && !more(val, max); } static inline u32 tipc_net_hash_mixes(struct net *net, int tn_rand) { return net_hash_mix(&init_net) ^ net_hash_mix(net) ^ tn_rand; } static inline u32 hash128to32(char *bytes) { __be32 *tmp = (__be32 *)bytes; u32 res; res = ntohl(tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3]); if (likely(res)) return res; return ntohl(tmp[0] | tmp[1] | tmp[2] | tmp[3]); } #ifdef CONFIG_SYSCTL int tipc_register_sysctl(void); void tipc_unregister_sysctl(void); #else #define tipc_register_sysctl() 0 #define tipc_unregister_sysctl() #endif #endif |
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2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Framework and drivers for configuring and reading different PHYs * Based on code in sungem_phy.c and (long-removed) gianfar_phy.c * * Author: Andy Fleming * * Copyright (c) 2004 Freescale Semiconductor, Inc. */ #ifndef __PHY_H #define __PHY_H #include <linux/compiler.h> #include <linux/spinlock.h> #include <linux/ethtool.h> #include <linux/leds.h> #include <linux/linkmode.h> #include <linux/netlink.h> #include <linux/mdio.h> #include <linux/mii.h> #include <linux/mii_timestamper.h> #include <linux/module.h> #include <linux/timer.h> #include <linux/workqueue.h> #include <linux/mod_devicetable.h> #include <linux/u64_stats_sync.h> #include <linux/irqreturn.h> #include <linux/iopoll.h> #include <linux/refcount.h> #include <linux/atomic.h> #include <net/eee.h> extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1s_p2mp_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_eee_cap1_features) __ro_after_init; extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_eee_cap2_features) __ro_after_init; #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features) #define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features) #define PHY_BASIC_T1S_P2MP_FEATURES ((unsigned long *)&phy_basic_t1s_p2mp_features) #define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features) #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features) #define PHY_10GBIT_FEATURES ((unsigned long *)&phy_10gbit_features) #define PHY_EEE_CAP1_FEATURES ((unsigned long *)&phy_eee_cap1_features) #define PHY_EEE_CAP2_FEATURES ((unsigned long *)&phy_eee_cap2_features) extern const int phy_basic_ports_array[3]; /* * Set phydev->irq to PHY_POLL if interrupts are not supported, * or not desired for this PHY. Set to PHY_MAC_INTERRUPT if * the attached MAC driver handles the interrupt */ #define PHY_POLL -1 #define PHY_MAC_INTERRUPT -2 #define PHY_IS_INTERNAL 0x00000001 #define PHY_RST_AFTER_CLK_EN 0x00000002 #define PHY_POLL_CABLE_TEST 0x00000004 #define PHY_ALWAYS_CALL_SUSPEND 0x00000008 #define MDIO_DEVICE_IS_PHY 0x80000000 /** * enum phy_interface_t - Interface Mode definitions * * @PHY_INTERFACE_MODE_NA: Not Applicable - don't touch * @PHY_INTERFACE_MODE_INTERNAL: No interface, MAC and PHY combined * @PHY_INTERFACE_MODE_MII: Media-independent interface * @PHY_INTERFACE_MODE_GMII: Gigabit media-independent interface * @PHY_INTERFACE_MODE_SGMII: Serial gigabit media-independent interface * @PHY_INTERFACE_MODE_TBI: Ten Bit Interface * @PHY_INTERFACE_MODE_REVMII: Reverse Media Independent Interface * @PHY_INTERFACE_MODE_RMII: Reduced Media Independent Interface * @PHY_INTERFACE_MODE_REVRMII: Reduced Media Independent Interface in PHY role * @PHY_INTERFACE_MODE_RGMII: Reduced gigabit media-independent interface * @PHY_INTERFACE_MODE_RGMII_ID: RGMII with Internal RX+TX delay * @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay * @PHY_INTERFACE_MODE_RGMII_TXID: RGMII with Internal TX delay * @PHY_INTERFACE_MODE_RTBI: Reduced TBI * @PHY_INTERFACE_MODE_SMII: Serial MII * @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface * @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface * @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax * @PHY_INTERFACE_MODE_PSGMII: Penta SGMII * @PHY_INTERFACE_MODE_QSGMII: Quad SGMII * @PHY_INTERFACE_MODE_TRGMII: Turbo RGMII * @PHY_INTERFACE_MODE_100BASEX: 100 BaseX * @PHY_INTERFACE_MODE_1000BASEX: 1000 BaseX * @PHY_INTERFACE_MODE_2500BASEX: 2500 BaseX * @PHY_INTERFACE_MODE_5GBASER: 5G BaseR * @PHY_INTERFACE_MODE_RXAUI: Reduced XAUI * @PHY_INTERFACE_MODE_XAUI: 10 Gigabit Attachment Unit Interface * @PHY_INTERFACE_MODE_10GBASER: 10G BaseR * @PHY_INTERFACE_MODE_25GBASER: 25G BaseR * @PHY_INTERFACE_MODE_USXGMII: Universal Serial 10GE MII * @PHY_INTERFACE_MODE_10GKR: 10GBASE-KR - with Clause 73 AN * @PHY_INTERFACE_MODE_QUSGMII: Quad Universal SGMII * @PHY_INTERFACE_MODE_1000BASEKX: 1000Base-KX - with Clause 73 AN * @PHY_INTERFACE_MODE_10G_QXGMII: 10G-QXGMII - 4 ports over 10G USXGMII * @PHY_INTERFACE_MODE_50GBASER: 50GBase-R - with Clause 134 FEC * @PHY_INTERFACE_MODE_LAUI: 50 Gigabit Attachment Unit Interface * @PHY_INTERFACE_MODE_100GBASEP: 100GBase-P - with Clause 134 FEC * @PHY_INTERFACE_MODE_MIILITE: MII-Lite - MII without RXER TXER CRS COL * @PHY_INTERFACE_MODE_MAX: Book keeping * * Describes the interface between the MAC and PHY. */ typedef enum { PHY_INTERFACE_MODE_NA, PHY_INTERFACE_MODE_INTERNAL, PHY_INTERFACE_MODE_MII, PHY_INTERFACE_MODE_GMII, PHY_INTERFACE_MODE_SGMII, PHY_INTERFACE_MODE_TBI, PHY_INTERFACE_MODE_REVMII, PHY_INTERFACE_MODE_RMII, PHY_INTERFACE_MODE_REVRMII, PHY_INTERFACE_MODE_RGMII, PHY_INTERFACE_MODE_RGMII_ID, PHY_INTERFACE_MODE_RGMII_RXID, PHY_INTERFACE_MODE_RGMII_TXID, PHY_INTERFACE_MODE_RTBI, PHY_INTERFACE_MODE_SMII, PHY_INTERFACE_MODE_XGMII, PHY_INTERFACE_MODE_XLGMII, PHY_INTERFACE_MODE_MOCA, PHY_INTERFACE_MODE_PSGMII, PHY_INTERFACE_MODE_QSGMII, PHY_INTERFACE_MODE_TRGMII, PHY_INTERFACE_MODE_100BASEX, PHY_INTERFACE_MODE_1000BASEX, PHY_INTERFACE_MODE_2500BASEX, PHY_INTERFACE_MODE_5GBASER, PHY_INTERFACE_MODE_RXAUI, PHY_INTERFACE_MODE_XAUI, /* 10GBASE-R, XFI, SFI - single lane 10G Serdes */ PHY_INTERFACE_MODE_10GBASER, PHY_INTERFACE_MODE_25GBASER, PHY_INTERFACE_MODE_USXGMII, /* 10GBASE-KR - with Clause 73 AN */ PHY_INTERFACE_MODE_10GKR, PHY_INTERFACE_MODE_QUSGMII, PHY_INTERFACE_MODE_1000BASEKX, PHY_INTERFACE_MODE_10G_QXGMII, PHY_INTERFACE_MODE_50GBASER, PHY_INTERFACE_MODE_LAUI, PHY_INTERFACE_MODE_100GBASEP, PHY_INTERFACE_MODE_MIILITE, PHY_INTERFACE_MODE_MAX, } phy_interface_t; /* PHY interface mode bitmap handling */ #define DECLARE_PHY_INTERFACE_MASK(name) \ DECLARE_BITMAP(name, PHY_INTERFACE_MODE_MAX) static inline void phy_interface_zero(unsigned long *intf) { bitmap_zero(intf, PHY_INTERFACE_MODE_MAX); } static inline bool phy_interface_empty(const unsigned long *intf) { return bitmap_empty(intf, PHY_INTERFACE_MODE_MAX); } static inline void phy_interface_copy(unsigned long *d, const unsigned long *s) { bitmap_copy(d, s, PHY_INTERFACE_MODE_MAX); } static inline unsigned int phy_interface_weight(const unsigned long *intf) { return bitmap_weight(intf, PHY_INTERFACE_MODE_MAX); } static inline void phy_interface_and(unsigned long *dst, const unsigned long *a, const unsigned long *b) { bitmap_and(dst, a, b, PHY_INTERFACE_MODE_MAX); } static inline void phy_interface_or(unsigned long *dst, const unsigned long *a, const unsigned long *b) { bitmap_or(dst, a, b, PHY_INTERFACE_MODE_MAX); } static inline void phy_interface_set_rgmii(unsigned long *intf) { __set_bit(PHY_INTERFACE_MODE_RGMII, intf); __set_bit(PHY_INTERFACE_MODE_RGMII_ID, intf); __set_bit(PHY_INTERFACE_MODE_RGMII_RXID, intf); __set_bit(PHY_INTERFACE_MODE_RGMII_TXID, intf); } /** * phy_modes - map phy_interface_t enum to device tree binding of phy-mode * @interface: enum phy_interface_t value * * Description: maps enum &phy_interface_t defined in this file * into the device tree binding of 'phy-mode', so that Ethernet * device driver can get PHY interface from device tree. */ static inline const char *phy_modes(phy_interface_t interface) { switch (interface) { case PHY_INTERFACE_MODE_NA: return ""; case PHY_INTERFACE_MODE_INTERNAL: return "internal"; case PHY_INTERFACE_MODE_MII: return "mii"; case PHY_INTERFACE_MODE_GMII: return "gmii"; case PHY_INTERFACE_MODE_SGMII: return "sgmii"; case PHY_INTERFACE_MODE_TBI: return "tbi"; case PHY_INTERFACE_MODE_REVMII: return "rev-mii"; case PHY_INTERFACE_MODE_RMII: return "rmii"; case PHY_INTERFACE_MODE_REVRMII: return "rev-rmii"; case PHY_INTERFACE_MODE_RGMII: return "rgmii"; case PHY_INTERFACE_MODE_RGMII_ID: return "rgmii-id"; case PHY_INTERFACE_MODE_RGMII_RXID: return "rgmii-rxid"; case PHY_INTERFACE_MODE_RGMII_TXID: return "rgmii-txid"; case PHY_INTERFACE_MODE_RTBI: return "rtbi"; case PHY_INTERFACE_MODE_SMII: return "smii"; case PHY_INTERFACE_MODE_XGMII: return "xgmii"; case PHY_INTERFACE_MODE_XLGMII: return "xlgmii"; case PHY_INTERFACE_MODE_MOCA: return "moca"; case PHY_INTERFACE_MODE_PSGMII: return "psgmii"; case PHY_INTERFACE_MODE_QSGMII: return "qsgmii"; case PHY_INTERFACE_MODE_TRGMII: return "trgmii"; case PHY_INTERFACE_MODE_1000BASEX: return "1000base-x"; case PHY_INTERFACE_MODE_1000BASEKX: return "1000base-kx"; case PHY_INTERFACE_MODE_2500BASEX: return "2500base-x"; case PHY_INTERFACE_MODE_5GBASER: return "5gbase-r"; case PHY_INTERFACE_MODE_RXAUI: return "rxaui"; case PHY_INTERFACE_MODE_XAUI: return "xaui"; case PHY_INTERFACE_MODE_10GBASER: return "10gbase-r"; case PHY_INTERFACE_MODE_25GBASER: return "25gbase-r"; case PHY_INTERFACE_MODE_USXGMII: return "usxgmii"; case PHY_INTERFACE_MODE_10GKR: return "10gbase-kr"; case PHY_INTERFACE_MODE_100BASEX: return "100base-x"; case PHY_INTERFACE_MODE_QUSGMII: return "qusgmii"; case PHY_INTERFACE_MODE_10G_QXGMII: return "10g-qxgmii"; case PHY_INTERFACE_MODE_50GBASER: return "50gbase-r"; case PHY_INTERFACE_MODE_LAUI: return "laui"; case PHY_INTERFACE_MODE_100GBASEP: return "100gbase-p"; case PHY_INTERFACE_MODE_MIILITE: return "mii-lite"; default: return "unknown"; } } /** * rgmii_clock - map link speed to the clock rate * @speed: link speed value * * Description: maps RGMII supported link speeds into the clock rates. * This can also be used for MII, GMII, and RMII interface modes as the * clock rates are identical, but the caller must be aware that errors * for unsupported clock rates will not be signalled. * * Returns: clock rate or negative errno */ static inline long rgmii_clock(int speed) { switch (speed) { case SPEED_10: return 2500000; case SPEED_100: return 25000000; case SPEED_1000: return 125000000; default: return -EINVAL; } } #define PHY_MAX_ADDR 32 /* Used when trying to connect to a specific phy (mii bus id:phy device id) */ #define PHY_ID_FMT "%s:%02x" #define PHY_ID_SIZE (MII_BUS_ID_SIZE + 3) #define MII_BUS_ID_SIZE 61 struct device; struct kernel_hwtstamp_config; struct phylink; struct phy_port; struct sfp_bus; struct sfp_upstream_ops; struct sk_buff; /** * struct mdio_bus_stats - Statistics counters for MDIO busses * @transfers: Total number of transfers, i.e. @writes + @reads * @errors: Number of MDIO transfers that returned an error * @writes: Number of write transfers * @reads: Number of read transfers * @syncp: Synchronisation for incrementing statistics */ struct mdio_bus_stats { u64_stats_t transfers; u64_stats_t errors; u64_stats_t writes; u64_stats_t reads; /* Must be last, add new statistics above */ struct u64_stats_sync syncp; }; /** * struct mii_bus - Represents an MDIO bus * * @owner: Who owns this device * @name: User friendly name for this MDIO device, or driver name * @id: Unique identifier for this bus, typical from bus hierarchy * @priv: Driver private data * * The Bus class for PHYs. Devices which provide access to * PHYs should register using this structure */ struct mii_bus { struct module *owner; const char *name; char id[MII_BUS_ID_SIZE]; void *priv; /** @read: Perform a read transfer on the bus */ int (*read)(struct mii_bus *bus, int addr, int regnum); /** @write: Perform a write transfer on the bus */ int (*write)(struct mii_bus *bus, int addr, int regnum, u16 val); /** @read_c45: Perform a C45 read transfer on the bus */ int (*read_c45)(struct mii_bus *bus, int addr, int devnum, int regnum); /** @write_c45: Perform a C45 write transfer on the bus */ int (*write_c45)(struct mii_bus *bus, int addr, int devnum, int regnum, u16 val); /** @reset: Perform a reset of the bus */ int (*reset)(struct mii_bus *bus); /** @stats: Statistic counters per device on the bus */ struct mdio_bus_stats stats[PHY_MAX_ADDR]; /** * @mdio_lock: A lock to ensure that only one thing can read/write * the MDIO bus at a time */ struct mutex mdio_lock; /** @parent: Parent device of this bus */ struct device *parent; /** @state: State of bus structure */ enum { MDIOBUS_ALLOCATED = 1, MDIOBUS_REGISTERED, MDIOBUS_UNREGISTERED, MDIOBUS_RELEASED, } state; /** @dev: Kernel device representation */ struct device dev; /** @mdio_map: list of all MDIO devices on bus */ struct mdio_device *mdio_map[PHY_MAX_ADDR]; /** @phy_mask: PHY addresses to be ignored when probing */ u32 phy_mask; /** @phy_ignore_ta_mask: PHY addresses to ignore the TA/read failure */ u32 phy_ignore_ta_mask; /** * @irq: An array of interrupts, each PHY's interrupt at the index * matching its address */ int irq[PHY_MAX_ADDR]; /** @reset_delay_us: GPIO reset pulse width in microseconds */ int reset_delay_us; /** @reset_post_delay_us: GPIO reset deassert delay in microseconds */ int reset_post_delay_us; /** @reset_gpiod: Reset GPIO descriptor pointer */ struct gpio_desc *reset_gpiod; /** @shared_lock: protect access to the shared element */ struct mutex shared_lock; #if IS_ENABLED(CONFIG_PHY_PACKAGE) /** @shared: shared state across different PHYs */ struct phy_package_shared *shared[PHY_MAX_ADDR]; #endif }; #define to_mii_bus(d) container_of(d, struct mii_bus, dev) struct mii_bus *mdiobus_alloc_size(size_t size); /** * mdiobus_alloc - Allocate an MDIO bus structure * * The internal state of the MDIO bus will be set of MDIOBUS_ALLOCATED ready * for the driver to register the bus. */ static inline struct mii_bus *mdiobus_alloc(void) { return mdiobus_alloc_size(0); } int __mdiobus_register(struct mii_bus *bus, struct module *owner); int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus, struct module *owner); #define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE) #define devm_mdiobus_register(dev, bus) \ __devm_mdiobus_register(dev, bus, THIS_MODULE) void mdiobus_unregister(struct mii_bus *bus); void mdiobus_free(struct mii_bus *bus); struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv); static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev) { return devm_mdiobus_alloc_size(dev, 0); } struct mii_bus *mdio_find_bus(const char *mdio_name); struct phy_device *mdiobus_scan_c22(struct mii_bus *bus, int addr); #define PHY_INTERRUPT_DISABLED false #define PHY_INTERRUPT_ENABLED true /** * enum phy_state - PHY state machine states: * * @PHY_DOWN: PHY device and driver are not ready for anything. probe * should be called if and only if the PHY is in this state, * given that the PHY device exists. * - PHY driver probe function will set the state to @PHY_READY * * @PHY_READY: PHY is ready to send and receive packets, but the * controller is not. By default, PHYs which do not implement * probe will be set to this state by phy_probe(). * - start will set the state to UP * * @PHY_UP: The PHY and attached device are ready to do work. * Interrupts should be started here. * - timer moves to @PHY_NOLINK or @PHY_RUNNING * * @PHY_NOLINK: PHY is up, but not currently plugged in. * - irq or timer will set @PHY_RUNNING if link comes back * - phy_stop moves to @PHY_HALTED * * @PHY_RUNNING: PHY is currently up, running, and possibly sending * and/or receiving packets * - irq or timer will set @PHY_NOLINK if link goes down * - phy_stop moves to @PHY_HALTED * * @PHY_CABLETEST: PHY is performing a cable test. Packet reception/sending * is not expected to work, carrier will be indicated as down. PHY will be * poll once per second, or on interrupt for it current state. * Once complete, move to UP to restart the PHY. * - phy_stop aborts the running test and moves to @PHY_HALTED * * @PHY_HALTED: PHY is up, but no polling or interrupts are done. * - phy_start moves to @PHY_UP * * @PHY_ERROR: PHY is up, but is in an error state. * - phy_stop moves to @PHY_HALTED */ enum phy_state { PHY_DOWN = 0, PHY_READY, PHY_HALTED, PHY_ERROR, PHY_UP, PHY_RUNNING, PHY_NOLINK, PHY_CABLETEST, }; #define MDIO_MMD_NUM 32 /** * struct phy_c45_device_ids - 802.3-c45 Device Identifiers * @devices_in_package: IEEE 802.3 devices in package register value. * @mmds_present: bit vector of MMDs present. * @device_ids: The device identifier for each present device. */ struct phy_c45_device_ids { u32 devices_in_package; u32 mmds_present; u32 device_ids[MDIO_MMD_NUM]; }; struct macsec_context; struct macsec_ops; /** * struct phy_oatc14_sqi_capability - SQI capability information for OATC14 * 10Base-T1S PHY * @updated: Indicates whether the SQI capability fields have been updated. * @sqi_max: Maximum supported Signal Quality Indicator (SQI) level reported by * the PHY. * @sqiplus_bits: Bits for SQI+ levels supported by the PHY. * 0 - SQI+ is not supported * 3 - SQI+ is supported, using 3 bits (8 levels) * 4 - SQI+ is supported, using 4 bits (16 levels) * 5 - SQI+ is supported, using 5 bits (32 levels) * 6 - SQI+ is supported, using 6 bits (64 levels) * 7 - SQI+ is supported, using 7 bits (128 levels) * 8 - SQI+ is supported, using 8 bits (256 levels) * * This structure is used by the OATC14 10Base-T1S PHY driver to store the SQI * and SQI+ capability information retrieved from the PHY. */ struct phy_oatc14_sqi_capability { bool updated; int sqi_max; u8 sqiplus_bits; }; /** * struct phy_device - An instance of a PHY * * @mdio: MDIO bus this PHY is on * @drv: Pointer to the driver for this PHY instance * @devlink: Create a link between phy dev and mac dev, if the external phy * used by current mac interface is managed by another mac interface. * @phyindex: Unique id across the phy's parent tree of phys to address the PHY * from userspace, similar to ifindex. A zero index means the PHY * wasn't assigned an id yet. * @phy_id: UID for this device found during discovery * @c45_ids: 802.3-c45 Device Identifiers if is_c45. * @is_c45: Set to true if this PHY uses clause 45 addressing. * @is_internal: Set to true if this PHY is internal to a MAC. * @is_pseudo_fixed_link: Set to true if this PHY is an Ethernet switch, etc. * @is_gigabit_capable: Set to true if PHY supports 1000Mbps * @has_fixups: Set to true if this PHY has fixups/quirks. * @suspended: Set to true if this PHY has been suspended successfully. * @suspended_by_mdio_bus: Set to true if this PHY was suspended by MDIO bus. * @sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal. * @loopback_enabled: Set true if this PHY has been loopbacked successfully. * @downshifted_rate: Set true if link speed has been downshifted. * @is_on_sfp_module: Set true if PHY is located on an SFP module. * @mac_managed_pm: Set true if MAC driver takes of suspending/resuming PHY * @wol_enabled: Set to true if the PHY or the attached MAC have Wake-on-LAN * enabled. * @is_genphy_driven: PHY is driven by one of the generic PHY drivers * @state: State of the PHY for management purposes * @dev_flags: Device-specific flags used by the PHY driver. * * - Bits [15:0] are free to use by the PHY driver to communicate * driver specific behavior. * - Bits [23:16] are currently reserved for future use. * - Bits [31:24] are reserved for defining generic * PHY driver behavior. * @irq: IRQ number of the PHY's interrupt (-1 if none) * @phylink: Pointer to phylink instance for this PHY * @sfp_bus_attached: Flag indicating whether the SFP bus has been attached * @sfp_bus: SFP bus attached to this PHY's fiber port * @attached_dev: The attached enet driver's device instance ptr * @adjust_link: Callback for the enet controller to respond to changes: in the * link state. * @phy_link_change: Callback for phylink for notification of link change * @macsec_ops: MACsec offloading ops. * * @speed: Current link speed * @duplex: Current duplex * @port: Current port * @pause: Current pause * @asym_pause: Current asymmetric pause * @supported: Combined MAC/PHY supported linkmodes * @advertising: Currently advertised linkmodes * @adv_old: Saved advertised while power saving for WoL * @supported_eee: supported PHY EEE linkmodes * @advertising_eee: Currently advertised EEE linkmodes * @enable_tx_lpi: When True, MAC should transmit LPI to PHY * @eee_active: phylib private state, indicating that EEE has been negotiated * @autonomous_eee_disabled: Set when autonomous EEE has been disabled, * used to re-apply after PHY soft reset * @eee_cfg: User configuration of EEE * @lp_advertising: Current link partner advertised linkmodes * @host_interfaces: PHY interface modes supported by host * @eee_disabled_modes: Energy efficient ethernet modes not to be advertised * @autoneg: Flag autoneg being used * @rate_matching: Current rate matching mode * @link: Current link state * @autoneg_complete: Flag auto negotiation of the link has completed * @mdix: Current crossover * @mdix_ctrl: User setting of crossover * @pma_extable: Cached value of PMA/PMD Extended Abilities Register * @interrupts: Flag interrupts have been enabled * @irq_suspended: Flag indicating PHY is suspended and therefore interrupt * handling shall be postponed until PHY has resumed * @irq_rerun: Flag indicating interrupts occurred while PHY was suspended, * requiring a rerun of the interrupt handler after resume * @default_timestamp: Flag indicating whether we are using the phy * timestamp as the default one * @interface: enum phy_interface_t value * @possible_interfaces: bitmap if interface modes that the attached PHY * will switch between depending on media speed. * @skb: Netlink message for cable diagnostics * @nest: Netlink nest used for cable diagnostics * @ehdr: nNtlink header for cable diagnostics * @phy_led_triggers: Array of LED triggers * @phy_num_led_triggers: Number of triggers in @phy_led_triggers * @led_link_trigger: LED trigger for link up/down * @last_triggered: last LED trigger for link speed * @leds: list of PHY LED structures * @master_slave_set: User requested master/slave configuration * @master_slave_get: Current master/slave advertisement * @master_slave_state: Current master/slave configuration * @mii_ts: Pointer to time stamper callbacks * @psec: Pointer to Power Sourcing Equipment control struct * @ports: List of PHY ports structures * @n_ports: Number of ports currently attached to the PHY * @max_n_ports: Max number of ports this PHY can expose * @lock: Mutex for serialization access to PHY * @state_queue: Work queue for state machine * @link_down_events: Number of times link was lost * @shared: Pointer to private data shared by phys in one package * @priv: Pointer to driver private data * @oatc14_sqi_capability: SQI capability information for OATC14 10Base-T1S PHY * * interrupts currently only supports enabled or disabled, * but could be changed in the future to support enabling * and disabling specific interrupts * * Contains some infrastructure for polling and interrupt * handling, as well as handling shifts in PHY hardware state */ struct phy_device { struct mdio_device mdio; /* Information about the PHY type */ /* And management functions */ const struct phy_driver *drv; struct device_link *devlink; u32 phyindex; u32 phy_id; struct phy_c45_device_ids c45_ids; unsigned is_c45:1; unsigned is_internal:1; unsigned is_pseudo_fixed_link:1; unsigned is_gigabit_capable:1; unsigned has_fixups:1; unsigned suspended:1; unsigned suspended_by_mdio_bus:1; unsigned sysfs_links:1; unsigned loopback_enabled:1; unsigned downshifted_rate:1; unsigned is_on_sfp_module:1; unsigned mac_managed_pm:1; unsigned wol_enabled:1; unsigned is_genphy_driven:1; unsigned autoneg:1; /* The most recently read link state */ unsigned link:1; unsigned autoneg_complete:1; bool pause:1; bool asym_pause:1; /* Interrupts are enabled */ unsigned interrupts:1; unsigned irq_suspended:1; unsigned irq_rerun:1; unsigned default_timestamp:1; int rate_matching; enum phy_state state; u32 dev_flags; phy_interface_t interface; DECLARE_PHY_INTERFACE_MASK(possible_interfaces); /* * forced speed & duplex (no autoneg) * partner speed & duplex & pause (autoneg) */ int speed; int duplex; int port; u8 master_slave_get; u8 master_slave_set; u8 master_slave_state; /* Union of PHY and Attached devices' supported link modes */ /* See ethtool.h for more info */ __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); __ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising); /* used with phy_speed_down */ __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old); /* used for eee validation and configuration*/ __ETHTOOL_DECLARE_LINK_MODE_MASK(supported_eee); __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising_eee); /* Energy efficient ethernet modes which should be prohibited */ __ETHTOOL_DECLARE_LINK_MODE_MASK(eee_disabled_modes); bool enable_tx_lpi; bool eee_active; bool autonomous_eee_disabled; struct eee_config eee_cfg; /* Host supported PHY interface types. Should be ignored if empty. */ DECLARE_PHY_INTERFACE_MASK(host_interfaces); #ifdef CONFIG_LED_TRIGGER_PHY struct phy_led_trigger *phy_led_triggers; unsigned int phy_num_led_triggers; struct phy_led_trigger *last_triggered; struct phy_led_trigger *led_link_trigger; #endif struct list_head leds; /* * Interrupt number for this PHY * -1 means no interrupt */ int irq; /* private data pointer */ /* For use by PHYs to maintain extra state */ void *priv; #if IS_ENABLED(CONFIG_PHY_PACKAGE) /* shared data pointer */ /* For use by PHYs inside the same package that need a shared state. */ struct phy_package_shared *shared; #endif /* Reporting cable test results */ struct sk_buff *skb; void *ehdr; struct nlattr *nest; /* Interrupt and Polling infrastructure */ struct delayed_work state_queue; struct mutex lock; /* This may be modified under the rtnl lock */ bool sfp_bus_attached; struct sfp_bus *sfp_bus; struct phylink *phylink; struct net_device *attached_dev; struct mii_timestamper *mii_ts; struct pse_control *psec; struct list_head ports; int n_ports; int max_n_ports; u8 mdix; u8 mdix_ctrl; int pma_extable; unsigned int link_down_events; void (*phy_link_change)(struct phy_device *phydev, bool up); void (*adjust_link)(struct net_device *dev); #if IS_ENABLED(CONFIG_MACSEC) /* MACsec management functions */ const struct macsec_ops *macsec_ops; #endif struct phy_oatc14_sqi_capability oatc14_sqi_capability; }; /* Generic phy_device::dev_flags */ #define PHY_F_NO_IRQ 0x80000000 #define PHY_F_RXC_ALWAYS_ON 0x40000000 #define PHY_F_KEEP_PREAMBLE_BEFORE_SFD 0x20000000 #define to_phy_device(__dev) container_of_const(to_mdio_device(__dev), struct phy_device, mdio) #define phy_for_each_port(phydev, port) \ list_for_each_entry(port, &(phydev)->ports, head) /** * struct phy_tdr_config - Configuration of a TDR raw test * * @first: Distance for first data collection point * @last: Distance for last data collection point * @step: Step between data collection points * @pair: Bitmap of cable pairs to collect data for * * A structure containing possible configuration parameters * for a TDR cable test. The driver does not need to implement * all the parameters, but should report what is actually used. * All distances are in centimeters. */ struct phy_tdr_config { u32 first; u32 last; u32 step; s8 pair; }; #define PHY_PAIR_ALL -1 /** * enum link_inband_signalling - in-band signalling modes that are supported * * @LINK_INBAND_DISABLE: in-band signalling can be disabled * @LINK_INBAND_ENABLE: in-band signalling can be enabled without bypass * @LINK_INBAND_BYPASS: in-band signalling can be enabled with bypass * * The possible and required bits can only be used if the valid bit is set. * If possible is clear, that means inband signalling can not be used. * Required is only valid when possible is set, and means that inband * signalling must be used. */ enum link_inband_signalling { LINK_INBAND_DISABLE = BIT(0), LINK_INBAND_ENABLE = BIT(1), LINK_INBAND_BYPASS = BIT(2), }; /** * struct phy_plca_cfg - Configuration of the PLCA (Physical Layer Collision * Avoidance) Reconciliation Sublayer. * * @version: read-only PLCA register map version. -1 = not available. Ignored * when setting the configuration. Format is the same as reported by the PLCA * IDVER register (31.CA00). -1 = not available. * @enabled: PLCA configured mode (enabled/disabled). -1 = not available / don't * set. 0 = disabled, anything else = enabled. * @node_id: the PLCA local node identifier. -1 = not available / don't set. * Allowed values [0 .. 254]. 255 = node disabled. * @node_cnt: the PLCA node count (maximum number of nodes having a TO). Only * meaningful for the coordinator (node_id = 0). -1 = not available / don't * set. Allowed values [1 .. 255]. * @to_tmr: The value of the PLCA to_timer in bit-times, which determines the * PLCA transmit opportunity window opening. See IEEE802.3 Clause 148 for * more details. The to_timer shall be set equal over all nodes. * -1 = not available / don't set. Allowed values [0 .. 255]. * @burst_cnt: controls how many additional frames a node is allowed to send in * single transmit opportunity (TO). The default value of 0 means that the * node is allowed exactly one frame per TO. A value of 1 allows two frames * per TO, and so on. -1 = not available / don't set. * Allowed values [0 .. 255]. * @burst_tmr: controls how many bit times to wait for the MAC to send a new * frame before interrupting the burst. This value should be set to a value * greater than the MAC inter-packet gap (which is typically 96 bits). * -1 = not available / don't set. Allowed values [0 .. 255]. * * A structure containing configuration parameters for setting/getting the PLCA * RS configuration. The driver does not need to implement all the parameters, * but should report what is actually used. */ struct phy_plca_cfg { int version; int enabled; int node_id; int node_cnt; int to_tmr; int burst_cnt; int burst_tmr; }; /** * struct phy_plca_status - Status of the PLCA (Physical Layer Collision * Avoidance) Reconciliation Sublayer. * * @pst: The PLCA status as reported by the PST bit in the PLCA STATUS * register(31.CA03), indicating BEACON activity. * * A structure containing status information of the PLCA RS configuration. * The driver does not need to implement all the parameters, but should report * what is actually used. */ struct phy_plca_status { bool pst; }; /* Modes for PHY LED configuration */ enum phy_led_modes { PHY_LED_ACTIVE_HIGH = 0, PHY_LED_ACTIVE_LOW = 1, PHY_LED_INACTIVE_HIGH_IMPEDANCE = 2, /* keep it last */ __PHY_LED_MODES_NUM, }; /** * struct phy_led: An LED driven by the PHY * * @list: List of LEDs * @phydev: PHY this LED is attached to * @led_cdev: Standard LED class structure * @index: Number of the LED */ struct phy_led { struct list_head list; struct phy_device *phydev; struct led_classdev led_cdev; u8 index; }; #define to_phy_led(d) container_of(d, struct phy_led, led_cdev) /* * PHY_MSE_CAP_* - Bitmask flags for Mean Square Error (MSE) capabilities * * These flags describe which MSE metrics and selectors are implemented * by the PHY for the current link mode. They are used in * struct phy_mse_capability.supported_caps. * * Standardization: * The OPEN Alliance (OA) defines the presence of MSE/SQI/pMSE but not their * numeric scaling, update intervals, or aggregation windows. See: * OA 100BASE-T1 TC1 v1.0, sections 6.1.1-6.1.3 * OA 1000BASE-T1 TC12 v2.2, sections 6.1.1-6.1.2 * * Description of flags: * * PHY_MSE_CAP_CHANNEL_A * Per-pair diagnostics for Channel A are supported. Mapping to the * physical wire pair may depend on MDI/MDI-X polarity. * * PHY_MSE_CAP_CHANNEL_B, _C, _D * Same as above for channels B-D. * * PHY_MSE_CAP_WORST_CHANNEL * The PHY or driver can identify and report the single worst-performing * channel without querying each one individually. * * PHY_MSE_CAP_LINK * The PHY provides only a link-wide aggregate measurement or cannot map * results to a specific pair (for example 100BASE-TX with unknown * MDI/MDI-X). * * PHY_MSE_CAP_AVG * Average MSE (mean DCQ metric) is supported. For 100/1000BASE-T1 the OA * recommends 2^16 symbols, scaled 0..511, but the exact scaling is * vendor-specific. * * PHY_MSE_CAP_PEAK * Peak MSE (current peak within the measurement window) is supported. * Defined as pMSE for 100BASE-T1; vendor-specific for others. * * PHY_MSE_CAP_WORST_PEAK * Latched worst-case peak MSE since the last read (read-to-clear if * implemented). Optional in OA 100BASE-T1 TC1 6.1.3. */ #define PHY_MSE_CAP_CHANNEL_A BIT(0) #define PHY_MSE_CAP_CHANNEL_B BIT(1) #define PHY_MSE_CAP_CHANNEL_C BIT(2) #define PHY_MSE_CAP_CHANNEL_D BIT(3) #define PHY_MSE_CAP_WORST_CHANNEL BIT(4) #define PHY_MSE_CAP_LINK BIT(5) #define PHY_MSE_CAP_AVG BIT(6) #define PHY_MSE_CAP_PEAK BIT(7) #define PHY_MSE_CAP_WORST_PEAK BIT(8) /* * enum phy_mse_channel - Identifiers for selecting MSE measurement channels * * PHY_MSE_CHANNEL_A - PHY_MSE_CHANNEL_D * Select per-pair measurement for the corresponding channel. * * PHY_MSE_CHANNEL_WORST * Select the single worst-performing channel reported by hardware. * * PHY_MSE_CHANNEL_LINK * Select link-wide aggregate data (used when per-pair results are * unavailable). */ enum phy_mse_channel { PHY_MSE_CHANNEL_A, PHY_MSE_CHANNEL_B, PHY_MSE_CHANNEL_C, PHY_MSE_CHANNEL_D, PHY_MSE_CHANNEL_WORST, PHY_MSE_CHANNEL_LINK, }; /** * struct phy_mse_capability - Capabilities of Mean Square Error (MSE) * measurement interface * * Standardization notes: * * - Presence of MSE/SQI/pMSE is defined by OPEN Alliance specs, but numeric * scaling, refresh/update rate and aggregation windows are not fixed and * are vendor-/product-specific. (OA 100BASE-T1 TC1 v1.0 6.1.*; * OA 1000BASE-T1 TC12 v2.2 6.1.*) * * - Typical recommendations: 2^16 symbols and 0..511 scaling for MSE; pMSE only * defined for 100BASE-T1 (sliding window example), others are vendor * extensions. Drivers must report actual scale/limits here. * * Describes the MSE measurement capabilities for the current link mode. These * properties are dynamic and may change when link settings are modified. * Callers should re-query this capability after any link state change to * ensure they have the most up-to-date information. * * Callers should only request measurements for channels and types that are * indicated as supported by the @supported_caps bitmask. If @supported_caps * is 0, the device provides no MSE diagnostics, and driver operations should * typically return -EOPNOTSUPP. * * Snapshot values for average and peak MSE can be normalized to a 0..1 ratio * by dividing the raw snapshot by the corresponding @max_average_mse or * @max_peak_mse value. * * @max_average_mse: The maximum value for an average MSE snapshot. This * defines the scale for the measurement. If the PHY_MSE_CAP_AVG capability is * supported, this value MUST be greater than 0. (vendor-specific units). * @max_peak_mse: The maximum value for a peak MSE snapshot. If either * PHY_MSE_CAP_PEAK or PHY_MSE_CAP_WORST_PEAK is supported, this value MUST * be greater than 0. (vendor-specific units). * @refresh_rate_ps: The typical interval, in picoseconds, between hardware * updates of the MSE values. This is an estimate, and callers should not * assume synchronous sampling. (vendor-specific units). * @num_symbols: The number of symbols aggregated per hardware sample to * calculate the MSE. (vendor-specific units). * @supported_caps: A bitmask of PHY_MSE_CAP_* values indicating which * measurement types (e.g., average, peak) and channels * (e.g., per-pair or link-wide) are supported. */ struct phy_mse_capability { u64 max_average_mse; u64 max_peak_mse; u64 refresh_rate_ps; u64 num_symbols; u32 supported_caps; }; /** * struct phy_mse_snapshot - A snapshot of Mean Square Error (MSE) diagnostics * * Holds a set of MSE diagnostic values that were all captured from a single * measurement window. * * Values are raw, device-scaled and not normalized. Use struct * phy_mse_capability to interpret the scale and sampling window. * * @average_mse: The average MSE value over the measurement window. * OPEN Alliance references MSE as a DCQ metric; recommends 2^16 symbols and * 0..511 scaling. Exact scale and refresh are vendor-specific. * (100BASE-T1 TC1 v1.0 6.1.1; 1000BASE-T1 TC12 v2.2 6.1.1). * * @peak_mse: The peak MSE value observed within the measurement window. * For 100BASE-T1, "pMSE" is optional and may be implemented via a sliding * 128-symbol window with periodic capture; not standardized for 1000BASE-T1. * (100BASE-T1 TC1 v1.0 6.1.3, Table "DCQ.peakMSE"). * * @worst_peak_mse: A latched high-water mark of the peak MSE since last read * (read-to-clear if implemented). OPEN Alliance shows a latched "worst case * peak MSE" for 100BASE-T1 pMSE; availability/semantics outside that are * vendor-specific. (100BASE-T1 TC1 v1.0 6.1.3, DCQ.peakMSE high byte; * 1000BASE-T1 TC12 v2.2 treats DCQ details as vendor-specific.) */ struct phy_mse_snapshot { u64 average_mse; u64 peak_mse; u64 worst_peak_mse; }; /** * struct phy_driver - Driver structure for a particular PHY type * * @mdiodrv: Data common to all MDIO devices * @phy_id: The result of reading the UID registers of this PHY * type, and ANDing them with the phy_id_mask. This driver * only works for PHYs with IDs which match this field * @name: The friendly name of this PHY type * @phy_id_mask: Defines the important bits of the phy_id * @features: A mandatory list of features (speed, duplex, etc) * supported by this PHY * @flags: A bitfield defining certain other features this PHY * supports (like interrupts) * @driver_data: Static driver data * * All functions are optional. If config_aneg or read_status * are not implemented, the phy core uses the genphy versions. * Note that none of these functions should be called from * interrupt time. The goal is for the bus read/write functions * to be able to block when the bus transaction is happening, * and be freed up by an interrupt (The MPC85xx has this ability, * though it is not currently supported in the driver). */ struct phy_driver { struct mdio_driver_common mdiodrv; u32 phy_id; char *name; u32 phy_id_mask; const unsigned long * const features; u32 flags; const void *driver_data; /** * @soft_reset: Called to issue a PHY software reset */ int (*soft_reset)(struct phy_device *phydev); /** * @config_init: Called to initialize the PHY, * including after a reset */ int (*config_init)(struct phy_device *phydev); /** * @probe: Called during discovery. Used to set * up device-specific structures, if any */ int (*probe)(struct phy_device *phydev); /** * @get_features: Probe the hardware to determine what * abilities it has. Should only set phydev->supported. */ int (*get_features)(struct phy_device *phydev); /** * @inband_caps: query whether in-band is supported for the given PHY * interface mode. Returns a bitmask of bits defined by enum * link_inband_signalling. */ unsigned int (*inband_caps)(struct phy_device *phydev, phy_interface_t interface); /** * @config_inband: configure in-band mode for the PHY */ int (*config_inband)(struct phy_device *phydev, unsigned int modes); /** * @get_rate_matching: Get the supported type of rate matching for a * particular phy interface. This is used by phy consumers to determine * whether to advertise lower-speed modes for that interface. It is * assumed that if a rate matching mode is supported on an interface, * then that interface's rate can be adapted to all slower link speeds * supported by the phy. If the interface is not supported, this should * return %RATE_MATCH_NONE. */ int (*get_rate_matching)(struct phy_device *phydev, phy_interface_t iface); /* PHY Power Management */ /** @suspend: Suspend the hardware, saving state if needed */ int (*suspend)(struct phy_device *phydev); /** @resume: Resume the hardware, restoring state if needed */ int (*resume)(struct phy_device *phydev); /** * @config_aneg: Configures the advertisement and resets * autonegotiation if phydev->autoneg is on, * forces the speed to the current settings in phydev * if phydev->autoneg is off */ int (*config_aneg)(struct phy_device *phydev); /** @aneg_done: Determines the auto negotiation result */ int (*aneg_done)(struct phy_device *phydev); /** @read_status: Determines the negotiated speed and duplex */ int (*read_status)(struct phy_device *phydev); /** * @config_intr: Enables or disables interrupts. * It should also clear any pending interrupts prior to enabling the * IRQs and after disabling them. */ int (*config_intr)(struct phy_device *phydev); /** @handle_interrupt: Override default interrupt handling */ irqreturn_t (*handle_interrupt)(struct phy_device *phydev); /** @remove: Clears up any memory if needed */ void (*remove)(struct phy_device *phydev); /** * @match_phy_device: Returns true if this is a suitable * driver for the given phydev. If NULL, matching is based on * phy_id and phy_id_mask. */ int (*match_phy_device)(struct phy_device *phydev, const struct phy_driver *phydrv); /** * @set_wol: Some devices (e.g. qnap TS-119P II) require PHY * register changes to enable Wake on LAN, so set_wol is * provided to be called in the ethernet driver's set_wol * function. */ int (*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); /** * @get_wol: See set_wol, but for checking whether Wake on LAN * is enabled. */ void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); /** * @link_change_notify: Called to inform a PHY device driver * when the core is about to change the link state. This * callback is supposed to be used as fixup hook for drivers * that need to take action when the link state * changes. Drivers are by no means allowed to mess with the * PHY device structure in their implementations. */ void (*link_change_notify)(struct phy_device *dev); /** * @read_mmd: PHY specific driver override for reading a MMD * register. This function is optional for PHY specific * drivers. When not provided, the default MMD read function * will be used by phy_read_mmd(), which will use either a * direct read for Clause 45 PHYs or an indirect read for * Clause 22 PHYs. devnum is the MMD device number within the * PHY device, regnum is the register within the selected MMD * device. */ int (*read_mmd)(struct phy_device *dev, int devnum, u16 regnum); /** * @write_mmd: PHY specific driver override for writing a MMD * register. This function is optional for PHY specific * drivers. When not provided, the default MMD write function * will be used by phy_write_mmd(), which will use either a * direct write for Clause 45 PHYs, or an indirect write for * Clause 22 PHYs. devnum is the MMD device number within the * PHY device, regnum is the register within the selected MMD * device. val is the value to be written. */ int (*write_mmd)(struct phy_device *dev, int devnum, u16 regnum, u16 val); /** @read_page: Return the current PHY register page number */ int (*read_page)(struct phy_device *dev); /** @write_page: Set the current PHY register page number */ int (*write_page)(struct phy_device *dev, int page); /** * @module_info: Get the size and type of the eeprom contained * within a plug-in module */ int (*module_info)(struct phy_device *dev, struct ethtool_modinfo *modinfo); /** * @module_eeprom: Get the eeprom information from the plug-in * module */ int (*module_eeprom)(struct phy_device *dev, struct ethtool_eeprom *ee, u8 *data); /** @cable_test_start: Start a cable test */ int (*cable_test_start)(struct phy_device *dev); /** @cable_test_tdr_start: Start a raw TDR cable test */ int (*cable_test_tdr_start)(struct phy_device *dev, const struct phy_tdr_config *config); /** * @cable_test_get_status: Once per second, or on interrupt, * request the status of the test. */ int (*cable_test_get_status)(struct phy_device *dev, bool *finished); /* Get statistics from the PHY using ethtool */ /** * @get_phy_stats: Retrieve PHY statistics. * @dev: The PHY device for which the statistics are retrieved. * @eth_stats: structure where Ethernet PHY stats will be stored. * @stats: structure where additional PHY-specific stats will be stored. * * Retrieves the supported PHY statistics and populates the provided * structures. The input structures are pre-initialized with * `ETHTOOL_STAT_NOT_SET`, and the driver must only modify members * corresponding to supported statistics. Unmodified members will remain * set to `ETHTOOL_STAT_NOT_SET` and will not be returned to userspace. */ void (*get_phy_stats)(struct phy_device *dev, struct ethtool_eth_phy_stats *eth_stats, struct ethtool_phy_stats *stats); /** * @get_link_stats: Retrieve link statistics. * @dev: The PHY device for which the statistics are retrieved. * @link_stats: structure where link-specific stats will be stored. * * Retrieves link-related statistics for the given PHY device. The input * structure is pre-initialized with `ETHTOOL_STAT_NOT_SET`, and the * driver must only modify members corresponding to supported * statistics. Unmodified members will remain set to * `ETHTOOL_STAT_NOT_SET` and will not be returned to userspace. */ void (*get_link_stats)(struct phy_device *dev, struct ethtool_link_ext_stats *link_stats); /** * @update_stats: Trigger periodic statistics updates. * @dev: The PHY device for which statistics updates are triggered. * * Periodically gathers statistics from the PHY device to update locally * maintained 64-bit counters. This is necessary for PHYs that implement * reduced-width counters (e.g., 16-bit or 32-bit) which can overflow * more frequently compared to 64-bit counters. By invoking this * callback, drivers can fetch the current counter values, handle * overflow detection, and accumulate the results into local 64-bit * counters for accurate reporting through the `get_phy_stats` and * `get_link_stats` interfaces. * * Return: 0 on success or a negative error code on failure. */ int (*update_stats)(struct phy_device *dev); /** @get_sset_count: Number of statistic counters */ int (*get_sset_count)(struct phy_device *dev); /** @get_strings: Names of the statistic counters */ void (*get_strings)(struct phy_device *dev, u8 *data); /** @get_stats: Return the statistic counter values */ void (*get_stats)(struct phy_device *dev, struct ethtool_stats *stats, u64 *data); /** * @disable_autonomous_eee: Disable PHY-autonomous EEE * * Some PHYs manage EEE autonomously, preventing the MAC from * controlling LPI signaling. This callback disables autonomous * EEE at the PHY. * * Return: 0 on success, negative errno on failure. */ int (*disable_autonomous_eee)(struct phy_device *dev); /* Get and Set PHY tunables */ /** @get_tunable: Return the value of a tunable */ int (*get_tunable)(struct phy_device *dev, struct ethtool_tunable *tuna, void *data); /** @set_tunable: Set the value of a tunable */ int (*set_tunable)(struct phy_device *dev, struct ethtool_tunable *tuna, const void *data); /** * @set_loopback: Set the loopback mode of the PHY * enable selects if the loopback mode is enabled or disabled. If the * loopback mode is enabled, then the speed of the loopback mode can be * requested with the speed argument. If the speed argument is zero, * then any speed can be selected. If the speed argument is > 0, then * this speed shall be selected for the loopback mode or EOPNOTSUPP * shall be returned if speed selection is not supported. */ int (*set_loopback)(struct phy_device *dev, bool enable, int speed); /** @get_sqi: Get the signal quality indication */ int (*get_sqi)(struct phy_device *dev); /** @get_sqi_max: Get the maximum signal quality indication */ int (*get_sqi_max)(struct phy_device *dev); /** * @get_mse_capability: Get capabilities and scale of MSE measurement * @dev: PHY device * @cap: Output (filled on success) * * Fill @cap with the PHY's MSE capability for the current * link mode: scale limits (max_average_mse, max_peak_mse), update * interval (refresh_rate_ps), sample length (num_symbols) and the * capability bitmask (supported_caps). * * Implementations may defer capability report until hardware has * converged; in that case they should return -EAGAIN and allow the * caller to retry later. * * Return: 0 on success. On failure, returns a negative errno code, such * as -EOPNOTSUPP if MSE measurement is not supported by the PHY or in * the current link mode, or -EAGAIN if the capability information is * not yet available. */ int (*get_mse_capability)(struct phy_device *dev, struct phy_mse_capability *cap); /** * @get_mse_snapshot: Retrieve a snapshot of MSE diagnostic values * @dev: PHY device * @channel: Channel identifier (PHY_MSE_CHANNEL_*) * @snapshot: Output (filled on success) * * Fill @snapshot with a correlated set of MSE values from the most * recent measurement window. * * Callers must validate @channel against supported_caps returned by * get_mse_capability(). Drivers must not coerce @channel; if the * requested selector is not implemented by the device or current link * mode, the operation must fail. * * worst_peak_mse is latched and must be treated as read-to-clear. * * Return: 0 on success. On failure, returns a negative errno code, such * as -EOPNOTSUPP if MSE measurement is not supported by the PHY or in * the current link mode, or -EAGAIN if measurements are not yet * available. */ int (*get_mse_snapshot)(struct phy_device *dev, enum phy_mse_channel channel, struct phy_mse_snapshot *snapshot); /* PLCA RS interface */ /** @get_plca_cfg: Return the current PLCA configuration */ int (*get_plca_cfg)(struct phy_device *dev, struct phy_plca_cfg *plca_cfg); /** @set_plca_cfg: Set the PLCA configuration */ int (*set_plca_cfg)(struct phy_device *dev, const struct phy_plca_cfg *plca_cfg); /** @get_plca_status: Return the current PLCA status info */ int (*get_plca_status)(struct phy_device *dev, struct phy_plca_status *plca_st); /** * @led_brightness_set: Set a PHY LED brightness. Index * indicates which of the PHYs led should be set. Value * follows the standard LED class meaning, e.g. LED_OFF, * LED_HALF, LED_FULL. */ int (*led_brightness_set)(struct phy_device *dev, u8 index, enum led_brightness value); /** * @led_blink_set: Set a PHY LED blinking. Index indicates * which of the PHYs led should be configured to blink. Delays * are in milliseconds and if both are zero then a sensible * default should be chosen. The call should adjust the * timings in that case and if it can't match the values * specified exactly. */ int (*led_blink_set)(struct phy_device *dev, u8 index, unsigned long *delay_on, unsigned long *delay_off); /** * @led_hw_is_supported: Can the HW support the given rules. * @dev: PHY device which has the LED * @index: Which LED of the PHY device * @rules The core is interested in these rules * * Return 0 if yes, -EOPNOTSUPP if not, or an error code. */ int (*led_hw_is_supported)(struct phy_device *dev, u8 index, unsigned long rules); /** * @led_hw_control_set: Set the HW to control the LED * @dev: PHY device which has the LED * @index: Which LED of the PHY device * @rules The rules used to control the LED * * Returns 0, or a an error code. */ int (*led_hw_control_set)(struct phy_device *dev, u8 index, unsigned long rules); /** * @led_hw_control_get: Get how the HW is controlling the LED * @dev: PHY device which has the LED * @index: Which LED of the PHY device * @rules Pointer to the rules used to control the LED * * Set *@rules to how the HW is currently blinking. Returns 0 * on success, or a error code if the current blinking cannot * be represented in rules, or some other error happens. */ int (*led_hw_control_get)(struct phy_device *dev, u8 index, unsigned long *rules); /** * @led_polarity_set: Set the LED polarity modes * @dev: PHY device which has the LED * @index: Which LED of the PHY device * @modes: bitmap of LED polarity modes * * Configure LED with all the required polarity modes in @modes * to make it correctly turn ON or OFF. * * Returns 0, or an error code. */ int (*led_polarity_set)(struct phy_device *dev, int index, unsigned long modes); /** * @get_next_update_time: Get the time until the next update event * @dev: PHY device * * Callback to determine the time (in jiffies) until the next * update event for the PHY state machine. Allows PHY drivers to * dynamically adjust polling intervals based on link state or other * conditions. * * Returns the time in jiffies until the next update event. */ unsigned int (*get_next_update_time)(struct phy_device *dev); /** * @attach_mii_port: Attach the given MII port to the PHY device * @dev: PHY device to notify * @port: The port being added * * Called when an MII port that needs to be driven by the PHY is found. * * The port that is being passed may or may not be initialized. If it is * already initialized, it is by the generic port representation from * devicetree, which superseeds any strapping or vendor-specific * properties. * * If the port isn't initialized, the port->mediums and port->lanes * fields must be set, possibly according to strapping information. * * The PHY driver must set the port->interfaces field to indicate the * possible MII modes that this PHY can output on the port. * * Returns 0, or an error code. */ int (*attach_mii_port)(struct phy_device *dev, struct phy_port *port); /** * @attach_mdi_port: Attach the given MII port to the PHY device * @dev: PHY device to notify * @port: The port being added * * Called when a port that needs to be driven by the PHY is found. The * number of time this will be called depends on phydev->max_n_ports, * which the driver can change in .probe(). * * The port that is being passed may or may not be initialized. If it is * already initialized, it is by the generic port representation from * devicetree, which superseeds any strapping or vendor-specific * properties. * * If the port isn't initialized, the port->mediums and port->lanes * fields must be set, possibly according to strapping information. * * Returns 0, or an error code. */ int (*attach_mdi_port)(struct phy_device *dev, struct phy_port *port); }; #define to_phy_driver(d) container_of_const(to_mdio_common_driver(d), \ struct phy_driver, mdiodrv) #define PHY_ID_MATCH_EXTACT_MASK GENMASK(31, 0) #define PHY_ID_MATCH_MODEL_MASK GENMASK(31, 4) #define PHY_ID_MATCH_VENDOR_MASK GENMASK(31, 10) #define PHY_ID_MATCH_EXACT(id) .phy_id = (id), .phy_id_mask = PHY_ID_MATCH_EXTACT_MASK #define PHY_ID_MATCH_MODEL(id) .phy_id = (id), .phy_id_mask = PHY_ID_MATCH_MODEL_MASK #define PHY_ID_MATCH_VENDOR(id) .phy_id = (id), .phy_id_mask = PHY_ID_MATCH_VENDOR_MASK /** * phy_id_compare - compare @id1 with @id2 taking account of @mask * @id1: first PHY ID * @id2: second PHY ID * @mask: the PHY ID mask, set bits are significant in matching * * Return true if the bits from @id1 and @id2 specified by @mask match. * This uses an equivalent test to (@id & @mask) == (@phy_id & @mask). */ static inline bool phy_id_compare(u32 id1, u32 id2, u32 mask) { return !((id1 ^ id2) & mask); } /** * phy_id_compare_vendor - compare @id with @vendor mask * @id: PHY ID * @vendor_mask: PHY Vendor mask * * Return: true if the bits from @id match @vendor using the * generic PHY Vendor mask. */ static inline bool phy_id_compare_vendor(u32 id, u32 vendor_mask) { return phy_id_compare(id, vendor_mask, PHY_ID_MATCH_VENDOR_MASK); } /** * phy_id_compare_model - compare @id with @model mask * @id: PHY ID * @model_mask: PHY Model mask * * Return: true if the bits from @id match @model using the * generic PHY Model mask. */ static inline bool phy_id_compare_model(u32 id, u32 model_mask) { return phy_id_compare(id, model_mask, PHY_ID_MATCH_MODEL_MASK); } /** * phydev_id_compare - compare @id with the PHY's Clause 22 ID * @phydev: the PHY device * @id: the PHY ID to be matched * * Compare the @phydev clause 22 ID with the provided @id and return true or * false depending whether it matches, using the bound driver mask. The * @phydev must be bound to a driver. */ static inline bool phydev_id_compare(struct phy_device *phydev, u32 id) { return phy_id_compare(id, phydev->phy_id, phydev->drv->phy_id_mask); } const char *phy_speed_to_str(int speed); const char *phy_duplex_to_str(unsigned int duplex); const char *phy_rate_matching_to_str(int rate_matching); int phy_interface_num_ports(phy_interface_t interface); /** * phy_is_started - Convenience function to check whether PHY is started * @phydev: The phy_device struct */ static inline bool phy_is_started(struct phy_device *phydev) { return phydev->state >= PHY_UP; } /** * phy_driver_is_genphy - Convenience function to check whether PHY is driven * by one of the generic PHY drivers * @phydev: The phy_device struct * Return: true if PHY is driven by one of the genphy drivers */ static inline bool phy_driver_is_genphy(struct phy_device *phydev) { return phydev->is_genphy_driven; } /** * phy_disable_eee_mode - Don't advertise an EEE mode. * @phydev: The phy_device struct * @link_mode: The EEE mode to be disabled */ static inline void phy_disable_eee_mode(struct phy_device *phydev, u32 link_mode) { WARN_ON(phy_is_started(phydev)); linkmode_set_bit(link_mode, phydev->eee_disabled_modes); linkmode_clear_bit(link_mode, phydev->advertising_eee); } /** * phy_can_wakeup() - indicate whether PHY has driver model wakeup capabilities * @phydev: The phy_device struct * * Returns: true/false depending on the PHY driver's device_set_wakeup_capable() * setting. */ static inline bool phy_can_wakeup(struct phy_device *phydev) { return device_can_wakeup(&phydev->mdio.dev); } /** * phy_may_wakeup() - indicate whether PHY has wakeup enabled * @phydev: The phy_device struct * * Returns: true/false depending on the PHY driver's device_set_wakeup_enabled() * setting if using the driver model, otherwise the legacy determination. */ bool phy_may_wakeup(struct phy_device *phydev); void phy_resolve_aneg_pause(struct phy_device *phydev); void phy_resolve_aneg_linkmode(struct phy_device *phydev); /** * phy_read - Convenience function for reading a given PHY register * @phydev: the phy_device struct * @regnum: register number to read * * NOTE: MUST NOT be called from interrupt context, * because the bus read/write functions may wait for an interrupt * to conclude the operation. */ static inline int phy_read(struct phy_device *phydev, u32 regnum) { return mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); } #define phy_read_poll_timeout(phydev, regnum, val, cond, sleep_us, \ timeout_us, sleep_before_read) \ ({ \ int __ret, __val; \ __ret = read_poll_timeout(__val = phy_read, val, \ __val < 0 || (cond), \ sleep_us, timeout_us, sleep_before_read, phydev, regnum); \ if (__val < 0) \ __ret = __val; \ if (__ret) \ phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \ __ret; \ }) /** * __phy_read - convenience function for reading a given PHY register * @phydev: the phy_device struct * @regnum: register number to read * * The caller must have taken the MDIO bus lock. */ static inline int __phy_read(struct phy_device *phydev, u32 regnum) { return __mdiobus_read(phydev->mdio.bus, phydev->mdio.addr, regnum); } /** * phy_write - Convenience function for writing a given PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: value to write to @regnum * * NOTE: MUST NOT be called from interrupt context, * because the bus read/write functions may wait for an interrupt * to conclude the operation. */ static inline int phy_write(struct phy_device *phydev, u32 regnum, u16 val) { return mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val); } /** * __phy_write - Convenience function for writing a given PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: value to write to @regnum * * The caller must have taken the MDIO bus lock. */ static inline int __phy_write(struct phy_device *phydev, u32 regnum, u16 val) { return __mdiobus_write(phydev->mdio.bus, phydev->mdio.addr, regnum, val); } /** * __phy_modify_changed() - Convenience function for modifying a PHY register * @phydev: a pointer to a &struct phy_device * @regnum: register number * @mask: bit mask of bits to clear * @set: bit mask of bits to set * * Unlocked helper function which allows a PHY register to be modified as * new register value = (old register value & ~mask) | set * * Returns negative errno, 0 if there was no change, and 1 in case of change */ static inline int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, u16 set) { return __mdiobus_modify_changed(phydev->mdio.bus, phydev->mdio.addr, regnum, mask, set); } /* * phy_read_mmd - Convenience function for reading a register * from an MMD on a given PHY. */ int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); /** * phy_read_mmd_poll_timeout - Periodically poll a PHY register until a * condition is met or a timeout occurs * * @phydev: The phy_device struct * @devaddr: The MMD to read from * @regnum: The register on the MMD to read * @val: Variable to read the register into * @cond: Break condition (usually involving @val) * @sleep_us: Maximum time to sleep between reads in us (0 tight-loops). Please * read usleep_range() function description for details and * limitations. * @timeout_us: Timeout in us, 0 means never timeout * @sleep_before_read: if it is true, sleep @sleep_us before read. * * Returns: 0 on success and -ETIMEDOUT upon a timeout. In either * case, the last read value at @args is stored in @val. Must not * be called from atomic context if sleep_us or timeout_us are used. */ #define phy_read_mmd_poll_timeout(phydev, devaddr, regnum, val, cond, \ sleep_us, timeout_us, sleep_before_read) \ ({ \ int __ret, __val; \ __ret = read_poll_timeout(__val = phy_read_mmd, val, \ __val < 0 || (cond), \ sleep_us, timeout_us, sleep_before_read, \ phydev, devaddr, regnum); \ if (__val < 0) \ __ret = __val; \ if (__ret) \ phydev_err(phydev, "%s failed: %d\n", __func__, __ret); \ __ret; \ }) /* * __phy_read_mmd - Convenience function for reading a register * from an MMD on a given PHY. */ int __phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); /* * phy_write_mmd - Convenience function for writing a register * on an MMD on a given PHY. */ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); /* * __phy_write_mmd - Convenience function for writing a register * on an MMD on a given PHY. */ int __phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val); int __phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); int phy_modify_changed(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); int __phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); int phy_modify(struct phy_device *phydev, u32 regnum, u16 mask, u16 set); int __phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, u16 mask, u16 set); int phy_modify_mmd_changed(struct phy_device *phydev, int devad, u32 regnum, u16 mask, u16 set); int __phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 mask, u16 set); int phy_modify_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 mask, u16 set); /** * __phy_set_bits - Convenience function for setting bits in a PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: bits to set * * The caller must have taken the MDIO bus lock. */ static inline int __phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) { return __phy_modify(phydev, regnum, 0, val); } /** * __phy_clear_bits - Convenience function for clearing bits in a PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: bits to clear * * The caller must have taken the MDIO bus lock. */ static inline int __phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val) { return __phy_modify(phydev, regnum, val, 0); } /** * phy_set_bits - Convenience function for setting bits in a PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: bits to set */ static inline int phy_set_bits(struct phy_device *phydev, u32 regnum, u16 val) { return phy_modify(phydev, regnum, 0, val); } /** * phy_clear_bits - Convenience function for clearing bits in a PHY register * @phydev: the phy_device struct * @regnum: register number to write * @val: bits to clear */ static inline int phy_clear_bits(struct phy_device *phydev, u32 regnum, u16 val) { return phy_modify(phydev, regnum, val, 0); } /** * __phy_set_bits_mmd - Convenience function for setting bits in a register * on MMD * @phydev: the phy_device struct * @devad: the MMD containing register to modify * @regnum: register number to modify * @val: bits to set * * The caller must have taken the MDIO bus lock. */ static inline int __phy_set_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) { return __phy_modify_mmd(phydev, devad, regnum, 0, val); } /** * __phy_clear_bits_mmd - Convenience function for clearing bits in a register * on MMD * @phydev: the phy_device struct * @devad: the MMD containing register to modify * @regnum: register number to modify * @val: bits to clear * * The caller must have taken the MDIO bus lock. */ static inline int __phy_clear_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) { return __phy_modify_mmd(phydev, devad, regnum, val, 0); } /** * phy_set_bits_mmd - Convenience function for setting bits in a register * on MMD * @phydev: the phy_device struct * @devad: the MMD containing register to modify * @regnum: register number to modify * @val: bits to set */ static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) { return phy_modify_mmd(phydev, devad, regnum, 0, val); } /** * phy_clear_bits_mmd - Convenience function for clearing bits in a register * on MMD * @phydev: the phy_device struct * @devad: the MMD containing register to modify * @regnum: register number to modify * @val: bits to clear */ static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val) { return phy_modify_mmd(phydev, devad, regnum, val, 0); } /** * phy_interrupt_is_valid - Convenience function for testing a given PHY irq * @phydev: the phy_device struct * * NOTE: must be kept in sync with addition/removal of PHY_POLL and * PHY_MAC_INTERRUPT */ static inline bool phy_interrupt_is_valid(struct phy_device *phydev) { return phydev->irq != PHY_POLL && phydev->irq != PHY_MAC_INTERRUPT; } /** * phy_polling_mode - Convenience function for testing whether polling is * used to detect PHY status changes * @phydev: the phy_device struct */ static inline bool phy_polling_mode(struct phy_device *phydev) { if (phydev->state == PHY_CABLETEST) if (phydev->drv->flags & PHY_POLL_CABLE_TEST) return true; if (phydev->drv->update_stats) return true; return phydev->irq == PHY_POLL; } /** * phy_has_hwtstamp - Tests whether a PHY time stamp configuration. * @phydev: the phy_device struct */ static inline bool phy_has_hwtstamp(struct phy_device *phydev) { return phydev && phydev->mii_ts && phydev->mii_ts->hwtstamp_set; } /** * phy_has_rxtstamp - Tests whether a PHY supports receive time stamping. * @phydev: the phy_device struct */ static inline bool phy_has_rxtstamp(struct phy_device *phydev) { return phydev && phydev->mii_ts && phydev->mii_ts->rxtstamp; } /** * phy_has_tsinfo - Tests whether a PHY reports time stamping and/or * PTP hardware clock capabilities. * @phydev: the phy_device struct */ static inline bool phy_has_tsinfo(struct phy_device *phydev) { return phydev && phydev->mii_ts && phydev->mii_ts->ts_info; } /** * phy_has_txtstamp - Tests whether a PHY supports transmit time stamping. * @phydev: the phy_device struct */ static inline bool phy_has_txtstamp(struct phy_device *phydev) { return phydev && phydev->mii_ts && phydev->mii_ts->txtstamp; } static inline int phy_hwtstamp(struct phy_device *phydev, struct kernel_hwtstamp_config *cfg, struct netlink_ext_ack *extack) { return phydev->mii_ts->hwtstamp_set(phydev->mii_ts, cfg, extack); } static inline bool phy_rxtstamp(struct phy_device *phydev, struct sk_buff *skb, int type) { return phydev->mii_ts->rxtstamp(phydev->mii_ts, skb, type); } static inline int phy_ts_info(struct phy_device *phydev, struct kernel_ethtool_ts_info *tsinfo) { return phydev->mii_ts->ts_info(phydev->mii_ts, tsinfo); } static inline void phy_txtstamp(struct phy_device *phydev, struct sk_buff *skb, int type) { phydev->mii_ts->txtstamp(phydev->mii_ts, skb, type); } /** * phy_is_default_hwtstamp - Is the PHY hwtstamp the default timestamp * @phydev: Pointer to phy_device * * This is used to get default timestamping device taking into account * the new API choice, which is selecting the timestamping from MAC by * default if the phydev does not have default_timestamp flag enabled. * * Return: True if phy is the default hw timestamp, false otherwise. */ static inline bool phy_is_default_hwtstamp(struct phy_device *phydev) { return phy_has_hwtstamp(phydev) && phydev->default_timestamp; } /** * phy_on_sfp - Convenience function for testing if a PHY is on an SFP module * @phydev: the phy_device struct */ static inline bool phy_on_sfp(struct phy_device *phydev) { return phydev->is_on_sfp_module; } /** * phy_interface_mode_is_rgmii - Convenience function for testing if a * PHY interface mode is RGMII (all variants) * @mode: the &phy_interface_t enum */ static inline bool phy_interface_mode_is_rgmii(phy_interface_t mode) { return mode >= PHY_INTERFACE_MODE_RGMII && mode <= PHY_INTERFACE_MODE_RGMII_TXID; }; /** * phy_interface_mode_is_8023z() - does the PHY interface mode use 802.3z * negotiation * @mode: one of &enum phy_interface_t * * Returns true if the PHY interface mode uses the 16-bit negotiation * word as defined in 802.3z. (See 802.3-2015 37.2.1 Config_Reg encoding) */ static inline bool phy_interface_mode_is_8023z(phy_interface_t mode) { return mode == PHY_INTERFACE_MODE_1000BASEX || mode == PHY_INTERFACE_MODE_2500BASEX; } /** * phy_interface_is_rgmii - Convenience function for testing if a PHY interface * is RGMII (all variants) * @phydev: the phy_device struct */ static inline bool phy_interface_is_rgmii(struct phy_device *phydev) { return phy_interface_mode_is_rgmii(phydev->interface); }; /** * phy_is_pseudo_fixed_link - Convenience function for testing if this * PHY is the CPU port facing side of an Ethernet switch, or similar. * @phydev: the phy_device struct */ static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev) { return phydev->is_pseudo_fixed_link; } phy_interface_t phy_fix_phy_mode_for_mac_delays(phy_interface_t interface, bool mac_txid, bool mac_rxid); int phy_save_page(struct phy_device *phydev); int phy_select_page(struct phy_device *phydev, int page); int phy_restore_page(struct phy_device *phydev, int oldpage, int ret); int phy_read_paged(struct phy_device *phydev, int page, u32 regnum); int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val); int phy_modify_paged_changed(struct phy_device *phydev, int page, u32 regnum, u16 mask, u16 set); int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum, u16 mask, u16 set); struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, bool is_c45, struct phy_c45_device_ids *c45_ids); int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id); struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode); struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); struct fwnode_handle *fwnode_get_phy_node(const struct fwnode_handle *fwnode); struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); int phy_device_register(struct phy_device *phy); void phy_device_free(struct phy_device *phydev); void phy_device_remove(struct phy_device *phydev); int phy_get_c45_ids(struct phy_device *phydev); int phy_init_hw(struct phy_device *phydev); int phy_suspend(struct phy_device *phydev); int phy_resume(struct phy_device *phydev); int __phy_resume(struct phy_device *phydev); int phy_loopback(struct phy_device *phydev, bool enable, int speed); struct phy_device *phy_find_next(struct mii_bus *bus, struct phy_device *pos); int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface); int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, void (*handler)(struct net_device *), phy_interface_t interface); struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, void (*handler)(struct net_device *), phy_interface_t interface); void phy_disconnect(struct phy_device *phydev); void phy_detach(struct phy_device *phydev); void phy_start(struct phy_device *phydev); void phy_stop(struct phy_device *phydev); int phy_config_aneg(struct phy_device *phydev); int _phy_start_aneg(struct phy_device *phydev); int phy_start_aneg(struct phy_device *phydev); int phy_aneg_done(struct phy_device *phydev); unsigned int phy_inband_caps(struct phy_device *phydev, phy_interface_t interface); int phy_config_inband(struct phy_device *phydev, unsigned int modes); int phy_speed_down(struct phy_device *phydev, bool sync); int phy_speed_up(struct phy_device *phydev); bool phy_check_valid(int speed, int duplex, unsigned long *features); int phy_restart_aneg(struct phy_device *phydev); int phy_reset_after_clk_enable(struct phy_device *phydev); static inline struct phy_device *phy_find_first(struct mii_bus *bus) { return phy_find_next(bus, NULL); } #define mdiobus_for_each_phy(_bus, _phydev) \ for (_phydev = phy_find_first(_bus); _phydev; \ _phydev = phy_find_next(_bus, _phydev)) #if IS_ENABLED(CONFIG_PHYLIB) int phy_start_cable_test(struct phy_device *phydev, struct netlink_ext_ack *extack); int phy_start_cable_test_tdr(struct phy_device *phydev, struct netlink_ext_ack *extack, const struct phy_tdr_config *config); #else static inline int phy_start_cable_test(struct phy_device *phydev, struct netlink_ext_ack *extack) { NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support"); return -EOPNOTSUPP; } static inline int phy_start_cable_test_tdr(struct phy_device *phydev, struct netlink_ext_ack *extack, const struct phy_tdr_config *config) { NL_SET_ERR_MSG(extack, "Kernel not compiled with PHYLIB support"); return -EOPNOTSUPP; } #endif static inline void phy_device_reset(struct phy_device *phydev, int value) { mdio_device_reset(&phydev->mdio, value); } #define phydev_err(_phydev, format, args...) \ dev_err(&_phydev->mdio.dev, format, ##args) #define phydev_err_probe(_phydev, err, format, args...) \ dev_err_probe(&_phydev->mdio.dev, err, format, ##args) #define phydev_info(_phydev, format, args...) \ dev_info(&_phydev->mdio.dev, format, ##args) #define phydev_warn(_phydev, format, args...) \ dev_warn(&_phydev->mdio.dev, format, ##args) #define phydev_dbg(_phydev, format, args...) \ dev_dbg(&_phydev->mdio.dev, format, ##args) static inline const char *phydev_name(const struct phy_device *phydev) { return dev_name(&phydev->mdio.dev); } static inline void phy_lock_mdio_bus(struct phy_device *phydev) { mutex_lock(&phydev->mdio.bus->mdio_lock); } static inline void phy_unlock_mdio_bus(struct phy_device *phydev) { mutex_unlock(&phydev->mdio.bus->mdio_lock); } void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) __printf(2, 3); char *phy_attached_info_irq(struct phy_device *phydev) __malloc; void phy_attached_info(struct phy_device *phydev); int genphy_match_phy_device(struct phy_device *phydev, const struct phy_driver *phydrv); /* Clause 22 PHY */ int genphy_read_abilities(struct phy_device *phydev); int genphy_setup_forced(struct phy_device *phydev); int genphy_restart_aneg(struct phy_device *phydev); int genphy_check_and_restart_aneg(struct phy_device *phydev, bool restart); int __genphy_config_aneg(struct phy_device *phydev, bool changed); int genphy_aneg_done(struct phy_device *phydev); int genphy_update_link(struct phy_device *phydev); int genphy_read_lpa(struct phy_device *phydev); int genphy_read_status_fixed(struct phy_device *phydev); int genphy_read_status(struct phy_device *phydev); int genphy_read_master_slave(struct phy_device *phydev); int genphy_suspend(struct phy_device *phydev); int genphy_resume(struct phy_device *phydev); int genphy_loopback(struct phy_device *phydev, bool enable, int speed); int genphy_soft_reset(struct phy_device *phydev); irqreturn_t genphy_handle_interrupt_no_ack(struct phy_device *phydev); static inline int genphy_config_aneg(struct phy_device *phydev) { return __genphy_config_aneg(phydev, false); } static inline int genphy_no_config_intr(struct phy_device *phydev) { return 0; } int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad, u16 regnum); int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum, u16 regnum, u16 val); /* Clause 37 */ int genphy_c37_config_aneg(struct phy_device *phydev); int genphy_c37_read_status(struct phy_device *phydev, bool *changed); /* Clause 45 PHY */ int genphy_c45_restart_aneg(struct phy_device *phydev); int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart); int genphy_c45_aneg_done(struct phy_device *phydev); int genphy_c45_read_link(struct phy_device *phydev); int genphy_c45_read_lpa(struct phy_device *phydev); int genphy_c45_read_pma(struct phy_device *phydev); int genphy_c45_pma_setup_forced(struct phy_device *phydev); int genphy_c45_pma_baset1_setup_master_slave(struct phy_device *phydev); int genphy_c45_an_config_aneg(struct phy_device *phydev); int genphy_c45_an_disable_aneg(struct phy_device *phydev); int genphy_c45_read_mdix(struct phy_device *phydev); int genphy_c45_pma_read_abilities(struct phy_device *phydev); int genphy_c45_pma_read_ext_abilities(struct phy_device *phydev); int genphy_c45_pma_baset1_read_abilities(struct phy_device *phydev); int genphy_c45_read_eee_abilities(struct phy_device *phydev); int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev); int genphy_c45_read_status(struct phy_device *phydev); int genphy_c45_baset1_read_status(struct phy_device *phydev); int genphy_c45_config_aneg(struct phy_device *phydev); int genphy_c45_loopback(struct phy_device *phydev, bool enable, int speed); int genphy_c45_pma_resume(struct phy_device *phydev); int genphy_c45_pma_suspend(struct phy_device *phydev); int genphy_c45_fast_retrain(struct phy_device *phydev, bool enable); int genphy_c45_plca_get_cfg(struct phy_device *phydev, struct phy_plca_cfg *plca_cfg); int genphy_c45_plca_set_cfg(struct phy_device *phydev, const struct phy_plca_cfg *plca_cfg); int genphy_c45_plca_get_status(struct phy_device *phydev, struct phy_plca_status *plca_st); int genphy_c45_eee_is_active(struct phy_device *phydev, unsigned long *lp); int genphy_c45_ethtool_get_eee(struct phy_device *phydev, struct ethtool_keee *data); int genphy_c45_ethtool_set_eee(struct phy_device *phydev, struct ethtool_keee *data); int genphy_c45_an_config_eee_aneg(struct phy_device *phydev); int genphy_c45_oatc14_cable_test_start(struct phy_device *phydev); int genphy_c45_oatc14_cable_test_get_status(struct phy_device *phydev, bool *finished); int genphy_c45_oatc14_get_sqi_max(struct phy_device *phydev); int genphy_c45_oatc14_get_sqi(struct phy_device *phydev); /* The gen10g_* functions are the old Clause 45 stub */ int gen10g_config_aneg(struct phy_device *phydev); static inline int phy_read_status(struct phy_device *phydev) { if (!phydev->drv) return -EIO; if (phydev->drv->read_status) return phydev->drv->read_status(phydev); else return genphy_read_status(phydev); } void phy_drivers_unregister(struct phy_driver *drv, int n); int phy_drivers_register(struct phy_driver *new_driver, int n, struct module *owner); void phy_error(struct phy_device *phydev); void phy_state_machine(struct work_struct *work); void phy_trigger_machine(struct phy_device *phydev); void phy_mac_interrupt(struct phy_device *phydev); void phy_start_machine(struct phy_device *phydev); void phy_stop_machine(struct phy_device *phydev); void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd); int phy_ethtool_ksettings_set(struct phy_device *phydev, const struct ethtool_link_ksettings *cmd); int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd); int phy_disable_interrupts(struct phy_device *phydev); void phy_request_interrupt(struct phy_device *phydev); void phy_free_interrupt(struct phy_device *phydev); void phy_print_status(struct phy_device *phydev); int phy_get_rate_matching(struct phy_device *phydev, phy_interface_t iface); void phy_set_max_speed(struct phy_device *phydev, u32 max_speed); void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode); void phy_advertise_supported(struct phy_device *phydev); void phy_advertise_eee_all(struct phy_device *phydev); void phy_support_sym_pause(struct phy_device *phydev); void phy_support_asym_pause(struct phy_device *phydev); void phy_support_eee(struct phy_device *phydev); void phy_disable_eee(struct phy_device *phydev); void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx, bool autoneg); void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); bool phy_validate_pause(struct phy_device *phydev, struct ethtool_pauseparam *pp); void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause); s32 phy_get_internal_delay(struct phy_device *phydev, const int *delay_values, int size, bool is_rx); int phy_get_tx_amplitude_gain(struct phy_device *phydev, struct device *dev, enum ethtool_link_mode_bit_indices linkmode, u32 *val); int phy_get_mac_termination(struct phy_device *phydev, struct device *dev, u32 *val); void phy_resolve_pause(unsigned long *local_adv, unsigned long *partner_adv, bool *tx_pause, bool *rx_pause); int phy_register_fixup_for_id(const char *bus_id, int (*run)(struct phy_device *)); int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, int (*run)(struct phy_device *)); int phy_eee_tx_clock_stop_capable(struct phy_device *phydev); int phy_eee_rx_clock_stop(struct phy_device *phydev, bool clk_stop_enable); int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable); int phy_get_eee_err(struct phy_device *phydev); int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_keee *data); int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_keee *data); int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol); void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol); int phy_ethtool_get_link_ksettings(struct net_device *ndev, struct ethtool_link_ksettings *cmd); int phy_ethtool_set_link_ksettings(struct net_device *ndev, const struct ethtool_link_ksettings *cmd); int phy_ethtool_nway_reset(struct net_device *ndev); int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data); int phy_ethtool_get_sset_count(struct phy_device *phydev); int phy_ethtool_get_stats(struct phy_device *phydev, struct ethtool_stats *stats, u64 *data); void __phy_ethtool_get_phy_stats(struct phy_device *phydev, struct ethtool_eth_phy_stats *phy_stats, struct ethtool_phy_stats *phydev_stats); void __phy_ethtool_get_link_ext_stats(struct phy_device *phydev, struct ethtool_link_ext_stats *link_stats); int phy_ethtool_get_plca_cfg(struct phy_device *phydev, struct phy_plca_cfg *plca_cfg); int phy_ethtool_set_plca_cfg(struct phy_device *phydev, const struct phy_plca_cfg *plca_cfg, struct netlink_ext_ack *extack); int phy_ethtool_get_plca_status(struct phy_device *phydev, struct phy_plca_status *plca_st); int __phy_hwtstamp_get(struct phy_device *phydev, struct kernel_hwtstamp_config *config); int __phy_hwtstamp_set(struct phy_device *phydev, struct kernel_hwtstamp_config *config, struct netlink_ext_ack *extack); struct phy_port *phy_get_sfp_port(struct phy_device *phydev); /** * phy_module_driver() - Helper macro for registering PHY drivers * @__phy_drivers: array of PHY drivers to register * @__count: Numbers of members in array * * Helper macro for PHY drivers which do not do anything special in module * init/exit. Each module may only use this macro once, and calling it * replaces module_init() and module_exit(). */ #define phy_module_driver(__phy_drivers, __count) \ static int __init phy_module_init(void) \ { \ return phy_drivers_register(__phy_drivers, __count, THIS_MODULE); \ } \ module_init(phy_module_init); \ static void __exit phy_module_exit(void) \ { \ phy_drivers_unregister(__phy_drivers, __count); \ } \ module_exit(phy_module_exit) #define module_phy_driver(__phy_drivers) \ phy_module_driver(__phy_drivers, ARRAY_SIZE(__phy_drivers)) #endif /* __PHY_H */ |
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All encoded * XDR data items are aligned on a boundary of 32 bits. */ #define XDR_UNIT sizeof(__be32) /* * Buffer adjustment */ #define XDR_QUADLEN(l) (((l) + 3) >> 2) /* * Generic opaque `network object.' */ #define XDR_MAX_NETOBJ 1024 struct xdr_netobj { unsigned int len; u8 * data; }; /* * Basic structure for transmission/reception of a client XDR message. * Features a header (for a linear buffer containing RPC headers * and the data payload for short messages), and then an array of * pages. * The tail iovec allows you to append data after the page array. Its * main interest is for appending padding to the pages in order to * satisfy the int_32-alignment requirements in RFC1832. * * For the future, we might want to string several of these together * in a list if anybody wants to make use of NFSv4 COMPOUND * operations and/or has a need for scatter/gather involving pages. */ struct xdr_buf { struct kvec head[1], /* RPC header + non-page data */ tail[1]; /* Appended after page data */ struct bio_vec *bvec; struct page ** pages; /* Array of pages */ unsigned int page_base, /* Start of page data */ page_len, /* Length of page data */ flags; /* Flags for data disposition */ #define XDRBUF_READ 0x01 /* target of file read */ #define XDRBUF_WRITE 0x02 /* source of file write */ #define XDRBUF_SPARSE_PAGES 0x04 /* Page array is sparse */ unsigned int buflen, /* Total length of storage buffer */ len; /* Length of XDR encoded message */ }; static inline void xdr_buf_init(struct xdr_buf *buf, void *start, size_t len) { buf->head[0].iov_base = start; buf->head[0].iov_len = len; buf->tail[0].iov_len = 0; buf->pages = NULL; buf->page_len = 0; buf->flags = 0; buf->len = 0; buf->buflen = len; } /* * pre-xdr'ed macros. */ #define xdr_zero cpu_to_be32(0) #define xdr_one cpu_to_be32(1) #define xdr_two cpu_to_be32(2) #define rpc_auth_null cpu_to_be32(RPC_AUTH_NULL) #define rpc_auth_unix cpu_to_be32(RPC_AUTH_UNIX) #define rpc_auth_short cpu_to_be32(RPC_AUTH_SHORT) #define rpc_auth_gss cpu_to_be32(RPC_AUTH_GSS) #define rpc_auth_tls cpu_to_be32(RPC_AUTH_TLS) #define rpc_call cpu_to_be32(RPC_CALL) #define rpc_reply cpu_to_be32(RPC_REPLY) #define rpc_msg_accepted cpu_to_be32(RPC_MSG_ACCEPTED) #define rpc_success cpu_to_be32(RPC_SUCCESS) #define rpc_prog_unavail cpu_to_be32(RPC_PROG_UNAVAIL) #define rpc_prog_mismatch cpu_to_be32(RPC_PROG_MISMATCH) #define rpc_proc_unavail cpu_to_be32(RPC_PROC_UNAVAIL) #define rpc_garbage_args cpu_to_be32(RPC_GARBAGE_ARGS) #define rpc_system_err cpu_to_be32(RPC_SYSTEM_ERR) #define rpc_drop_reply cpu_to_be32(RPC_DROP_REPLY) #define rpc_mismatch cpu_to_be32(RPC_MISMATCH) #define rpc_auth_error cpu_to_be32(RPC_AUTH_ERROR) #define rpc_auth_ok cpu_to_be32(RPC_AUTH_OK) #define rpc_autherr_badcred cpu_to_be32(RPC_AUTH_BADCRED) #define rpc_autherr_rejectedcred cpu_to_be32(RPC_AUTH_REJECTEDCRED) #define rpc_autherr_badverf cpu_to_be32(RPC_AUTH_BADVERF) #define rpc_autherr_rejectedverf cpu_to_be32(RPC_AUTH_REJECTEDVERF) #define rpc_autherr_tooweak cpu_to_be32(RPC_AUTH_TOOWEAK) #define rpc_autherr_invalidresp cpu_to_be32(RPC_AUTH_INVALIDRESP) #define rpc_autherr_failed cpu_to_be32(RPC_AUTH_FAILED) #define rpcsec_gsserr_credproblem cpu_to_be32(RPCSEC_GSS_CREDPROBLEM) #define rpcsec_gsserr_ctxproblem cpu_to_be32(RPCSEC_GSS_CTXPROBLEM) /* * Miscellaneous XDR helper functions */ __be32 *xdr_encode_opaque_fixed(__be32 *p, const void *ptr, unsigned int len); __be32 *xdr_encode_opaque(__be32 *p, const void *ptr, unsigned int len); __be32 *xdr_encode_string(__be32 *p, const char *s); __be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *); void xdr_inline_pages(struct xdr_buf *, unsigned int, struct page **, unsigned int, unsigned int); void xdr_terminate_string(const struct xdr_buf *, const u32); size_t xdr_buf_pagecount(const struct xdr_buf *buf); int xdr_alloc_bvec(struct xdr_buf *buf, gfp_t gfp); void xdr_free_bvec(struct xdr_buf *buf); unsigned int xdr_buf_to_bvec(struct bio_vec *bvec, unsigned int bvec_size, const struct xdr_buf *xdr); static inline __be32 *xdr_encode_array(__be32 *p, const void *s, unsigned int len) { return xdr_encode_opaque(p, s, len); } /* * Decode 64bit quantities (NFSv3 support) */ static inline __be32 * xdr_encode_hyper(__be32 *p, __u64 val) { put_unaligned_be64(val, p); return p + 2; } static inline __be32 * xdr_decode_hyper(__be32 *p, __u64 *valp) { *valp = get_unaligned_be64(p); return p + 2; } static inline __be32 * xdr_decode_opaque_fixed(__be32 *p, void *ptr, unsigned int len) { memcpy(ptr, p, len); return p + XDR_QUADLEN(len); } static inline void xdr_netobj_dup(struct xdr_netobj *dst, struct xdr_netobj *src, gfp_t gfp_mask) { dst->data = kmemdup(src->data, src->len, gfp_mask); dst->len = src->len; } /* * Adjust kvec to reflect end of xdr'ed data (RPC client XDR) */ static inline int xdr_adjust_iovec(struct kvec *iov, __be32 *p) { return iov->iov_len = ((u8 *) p - (u8 *) iov->iov_base); } /* * XDR buffer helper functions */ extern void xdr_buf_from_iov(const struct kvec *, struct xdr_buf *); extern int xdr_buf_subsegment(const struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int); extern void xdr_buf_trim(struct xdr_buf *, unsigned int); extern int read_bytes_from_xdr_buf(const struct xdr_buf *, unsigned int, void *, unsigned int); extern int write_bytes_to_xdr_buf(const struct xdr_buf *, unsigned int, void *, unsigned int); extern int xdr_encode_word(const struct xdr_buf *, unsigned int, u32); extern int xdr_decode_word(const struct xdr_buf *, unsigned int, u32 *); struct xdr_array2_desc; typedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem); struct xdr_array2_desc { unsigned int elem_size; unsigned int array_len; unsigned int array_maxlen; xdr_xcode_elem_t xcode; }; extern int xdr_decode_array2(const struct xdr_buf *buf, unsigned int base, struct xdr_array2_desc *desc); extern int xdr_encode_array2(const struct xdr_buf *buf, unsigned int base, struct xdr_array2_desc *desc); extern void _copy_from_pages(char *p, struct page **pages, size_t pgbase, size_t len); /* * Provide some simple tools for XDR buffer overflow-checking etc. */ struct xdr_stream { __be32 *p; /* start of available buffer */ struct xdr_buf *buf; /* XDR buffer to read/write */ __be32 *end; /* end of available buffer space */ struct kvec *iov; /* pointer to the current kvec */ struct kvec scratch; /* Scratch buffer */ struct page **page_ptr; /* pointer to the current page */ void *page_kaddr; /* kmapped address of the current page */ unsigned int nwords; /* Remaining decode buffer length */ struct rpc_rqst *rqst; /* For debugging */ }; /* * These are the xdr_stream style generic XDR encode and decode functions. */ typedef void (*kxdreproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr, const void *obj); typedef int (*kxdrdproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr, void *obj); extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p, struct rpc_rqst *rqst); void xdr_init_encode_pages(struct xdr_stream *xdr, struct xdr_buf *buf); extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); extern int xdr_reserve_space_vec(struct xdr_stream *xdr, size_t nbytes); extern void __xdr_commit_encode(struct xdr_stream *xdr); extern void xdr_truncate_encode(struct xdr_stream *xdr, size_t len); extern void xdr_truncate_decode(struct xdr_stream *xdr, size_t len); extern int xdr_restrict_buflen(struct xdr_stream *xdr, int newbuflen); extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, unsigned int base, unsigned int len); extern unsigned int xdr_stream_pos(const struct xdr_stream *xdr); extern unsigned int xdr_page_pos(const struct xdr_stream *xdr); extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p, struct rpc_rqst *rqst); extern void xdr_init_decode_pages(struct xdr_stream *xdr, struct xdr_buf *buf, struct page **pages, unsigned int len); extern void xdr_finish_decode(struct xdr_stream *xdr); extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes); extern unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len); extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); extern int xdr_process_buf(const struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data); extern void xdr_set_pagelen(struct xdr_stream *, unsigned int len); extern bool xdr_stream_subsegment(struct xdr_stream *xdr, struct xdr_buf *subbuf, unsigned int len); extern unsigned int xdr_stream_move_subsegment(struct xdr_stream *xdr, unsigned int offset, unsigned int target, unsigned int length); extern unsigned int xdr_stream_zero(struct xdr_stream *xdr, unsigned int offset, unsigned int length); /** * xdr_set_scratch_buffer - Attach a scratch buffer for decoding data. * @xdr: pointer to xdr_stream struct * @buf: pointer to an empty buffer * @buflen: size of 'buf' * * The scratch buffer is used when decoding from an array of pages. * If an xdr_inline_decode() call spans across page boundaries, then * we copy the data into the scratch buffer in order to allow linear * access. */ static inline void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen) { xdr->scratch.iov_base = buf; xdr->scratch.iov_len = buflen; } /** * xdr_set_scratch_folio - Attach a scratch buffer for decoding data * @xdr: pointer to xdr_stream struct * @folio: an anonymous folio * * See xdr_set_scratch_buffer(). */ static inline void xdr_set_scratch_folio(struct xdr_stream *xdr, struct folio *folio) { xdr_set_scratch_buffer(xdr, folio_address(folio), folio_size(folio)); } /** * xdr_reset_scratch_buffer - Clear scratch buffer information * @xdr: pointer to xdr_stream struct * * See xdr_set_scratch_buffer(). */ static inline void xdr_reset_scratch_buffer(struct xdr_stream *xdr) { xdr_set_scratch_buffer(xdr, NULL, 0); } /** * xdr_commit_encode - Ensure all data is written to xdr->buf * @xdr: pointer to xdr_stream * * Handle encoding across page boundaries by giving the caller a * temporary location to write to, then later copying the data into * place. __xdr_commit_encode() does that copying. */ static inline void xdr_commit_encode(struct xdr_stream *xdr) { if (unlikely(xdr->scratch.iov_len)) __xdr_commit_encode(xdr); } /** * xdr_stream_remaining - Return the number of bytes remaining in the stream * @xdr: pointer to struct xdr_stream * * Returns: * Number of bytes remaining in @xdr before xdr->end */ static inline size_t xdr_stream_remaining(const struct xdr_stream *xdr) { return xdr->nwords << 2; } ssize_t xdr_stream_decode_string_dup(struct xdr_stream *xdr, char **str, size_t maxlen, gfp_t gfp_flags); ssize_t xdr_stream_decode_opaque_auth(struct xdr_stream *xdr, u32 *flavor, void **body, unsigned int *body_len); ssize_t xdr_stream_encode_opaque_auth(struct xdr_stream *xdr, u32 flavor, void *body, unsigned int body_len); /** * xdr_align_size - Calculate padded size of an object * @n: Size of an object being XDR encoded (in bytes) * * Returns: * Size (in bytes) of the object including xdr padding */ static inline size_t xdr_align_size(size_t n) { const size_t mask = XDR_UNIT - 1; return (n + mask) & ~mask; } /** * xdr_pad_size - Calculate size of an object's pad * @n: Size of an object being XDR encoded (in bytes) * * This implementation avoids the need for conditional * branches or modulo division. * * Returns: * Size (in bytes) of the needed XDR pad */ static inline size_t xdr_pad_size(size_t n) { return xdr_align_size(n) - n; } /** * xdr_stream_encode_item_present - Encode a "present" list item * @xdr: pointer to xdr_stream * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_item_present(struct xdr_stream *xdr) { const size_t len = XDR_UNIT; __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; *p = xdr_one; return len; } /** * xdr_stream_encode_item_absent - Encode a "not present" list item * @xdr: pointer to xdr_stream * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline int xdr_stream_encode_item_absent(struct xdr_stream *xdr) { const size_t len = XDR_UNIT; __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; *p = xdr_zero; return len; } /** * xdr_encode_bool - Encode a boolean item * @p: address in a buffer into which to encode * @n: boolean value to encode * * Returns: * Address of item following the encoded boolean */ static inline __be32 *xdr_encode_bool(__be32 *p, u32 n) { *p++ = n ? xdr_one : xdr_zero; return p; } /** * xdr_stream_encode_bool - Encode a boolean item * @xdr: pointer to xdr_stream * @n: boolean value to encode * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline int xdr_stream_encode_bool(struct xdr_stream *xdr, __u32 n) { const size_t len = XDR_UNIT; __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; xdr_encode_bool(p, n); return len; } /** * xdr_stream_encode_u32 - Encode a 32-bit integer * @xdr: pointer to xdr_stream * @n: integer to encode * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_u32(struct xdr_stream *xdr, __u32 n) { const size_t len = sizeof(n); __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; *p = cpu_to_be32(n); return len; } /** * xdr_stream_encode_be32 - Encode a big-endian 32-bit integer * @xdr: pointer to xdr_stream * @n: integer to encode * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_be32(struct xdr_stream *xdr, __be32 n) { const size_t len = sizeof(n); __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; *p = n; return len; } /** * xdr_stream_encode_u64 - Encode a 64-bit integer * @xdr: pointer to xdr_stream * @n: 64-bit integer to encode * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_u64(struct xdr_stream *xdr, __u64 n) { const size_t len = sizeof(n); __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; xdr_encode_hyper(p, n); return len; } /** * xdr_stream_encode_opaque_inline - Encode opaque xdr data * @xdr: pointer to xdr_stream * @ptr: pointer to void pointer * @len: size of object * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_opaque_inline(struct xdr_stream *xdr, void **ptr, size_t len) { size_t count = sizeof(__u32) + xdr_align_size(len); __be32 *p = xdr_reserve_space(xdr, count); if (unlikely(!p)) { *ptr = NULL; return -EMSGSIZE; } xdr_encode_opaque(p, NULL, len); *ptr = ++p; return count; } /** * xdr_stream_encode_opaque_fixed - Encode fixed length opaque xdr data * @xdr: pointer to xdr_stream * @ptr: pointer to opaque data object * @len: size of object pointed to by @ptr * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_opaque_fixed(struct xdr_stream *xdr, const void *ptr, size_t len) { __be32 *p = xdr_reserve_space(xdr, len); if (unlikely(!p)) return -EMSGSIZE; xdr_encode_opaque_fixed(p, ptr, len); return xdr_align_size(len); } /** * xdr_stream_encode_opaque - Encode variable length opaque xdr data * @xdr: pointer to xdr_stream * @ptr: pointer to opaque data object * @len: size of object pointed to by @ptr * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_opaque(struct xdr_stream *xdr, const void *ptr, size_t len) { size_t count = sizeof(__u32) + xdr_align_size(len); __be32 *p = xdr_reserve_space(xdr, count); if (unlikely(!p)) return -EMSGSIZE; xdr_encode_opaque(p, ptr, len); return count; } /** * xdr_stream_encode_uint32_array - Encode variable length array of integers * @xdr: pointer to xdr_stream * @array: array of integers * @array_size: number of elements in @array * * Returns: * On success, returns length in bytes of XDR buffer consumed * %-EMSGSIZE on XDR buffer overflow */ static inline ssize_t xdr_stream_encode_uint32_array(struct xdr_stream *xdr, const __u32 *array, size_t array_size) { ssize_t ret = (array_size+1) * sizeof(__u32); __be32 *p = xdr_reserve_space(xdr, ret); if (unlikely(!p)) return -EMSGSIZE; *p++ = cpu_to_be32(array_size); for (; array_size > 0; p++, array++, array_size--) *p = cpu_to_be32p(array); return ret; } /** * xdr_item_is_absent - symbolically handle XDR discriminators * @p: pointer to undecoded discriminator * * Returns: * %true if the following XDR item is absent * %false if the following XDR item is present */ static inline bool xdr_item_is_absent(const __be32 *p) { return *p == xdr_zero; } /** * xdr_item_is_present - symbolically handle XDR discriminators * @p: pointer to undecoded discriminator * * Returns: * %true if the following XDR item is present * %false if the following XDR item is absent */ static inline bool xdr_item_is_present(const __be32 *p) { return *p != xdr_zero; } /** * xdr_stream_decode_bool - Decode a boolean * @xdr: pointer to xdr_stream * @ptr: pointer to a u32 in which to store the result * * Returns: * %0 on success * %-EBADMSG on XDR buffer overflow */ static inline ssize_t xdr_stream_decode_bool(struct xdr_stream *xdr, __u32 *ptr) { const size_t count = sizeof(*ptr); __be32 *p = xdr_inline_decode(xdr, count); if (unlikely(!p)) return -EBADMSG; *ptr = (*p != xdr_zero); return 0; } /** * xdr_stream_decode_u32 - Decode a 32-bit integer * @xdr: pointer to xdr_stream * @ptr: location to store integer * * Returns: * %0 on success * %-EBADMSG on XDR buffer overflow */ static inline ssize_t xdr_stream_decode_u32(struct xdr_stream *xdr, __u32 *ptr) { const size_t count = sizeof(*ptr); __be32 *p = xdr_inline_decode(xdr, count); if (unlikely(!p)) return -EBADMSG; *ptr = be32_to_cpup(p); return 0; } /** * xdr_stream_decode_be32 - Decode a big-endian 32-bit integer * @xdr: pointer to xdr_stream * @ptr: location to store integer * * Returns: * %0 on success * %-EBADMSG on XDR buffer overflow */ static inline ssize_t xdr_stream_decode_be32(struct xdr_stream *xdr, __be32 *ptr) { const size_t count = sizeof(*ptr); __be32 *p = xdr_inline_decode(xdr, count); if (unlikely(!p)) return -EBADMSG; *ptr = *p; return 0; } /** * xdr_stream_decode_u64 - Decode a 64-bit integer * @xdr: pointer to xdr_stream * @ptr: location to store 64-bit integer * * Returns: * %0 on success * %-EBADMSG on XDR buffer overflow */ static inline ssize_t xdr_stream_decode_u64(struct xdr_stream *xdr, __u64 *ptr) { const size_t count = sizeof(*ptr); __be32 *p = xdr_inline_decode(xdr, count); if (unlikely(!p)) return -EBADMSG; xdr_decode_hyper(p, ptr); return 0; } /** * xdr_stream_decode_opaque_fixed - Decode fixed length opaque xdr data * @xdr: pointer to xdr_stream * @ptr: location to store data * @len: size of buffer pointed to by @ptr * * Returns: * %0 on success * %-EBADMSG on XDR buffer overflow */ static inline ssize_t xdr_stream_decode_opaque_fixed(struct xdr_stream *xdr, void *ptr, size_t len) { __be32 *p = xdr_inline_decode(xdr, len); if (unlikely(!p)) return -EBADMSG; xdr_decode_opaque_fixed(p, ptr, len); return 0; } /** * xdr_stream_decode_opaque_inline - Decode variable length opaque xdr data * @xdr: pointer to xdr_stream * @ptr: location to store pointer to opaque data * @maxlen: maximum acceptable object size * * Note: the pointer stored in @ptr cannot be assumed valid after the XDR * buffer has been destroyed, or even after calling xdr_inline_decode() * on @xdr. It is therefore expected that the object it points to should * be processed immediately. * * Returns: * On success, returns size of object stored in *@ptr * %-EBADMSG on XDR buffer overflow * %-EMSGSIZE if the size of the object would exceed @maxlen */ static inline ssize_t xdr_stream_decode_opaque_inline(struct xdr_stream *xdr, void **ptr, size_t maxlen) { __be32 *p; __u32 len; *ptr = NULL; if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0)) return -EBADMSG; if (len != 0) { p = xdr_inline_decode(xdr, len); if (unlikely(!p)) return -EBADMSG; if (unlikely(len > maxlen)) return -EMSGSIZE; *ptr = p; } return len; } /** * xdr_stream_decode_uint32_array - Decode variable length array of integers * @xdr: pointer to xdr_stream * @array: location to store the integer array or NULL * @array_size: number of elements to store * * Returns: * On success, returns number of elements stored in @array * %-EBADMSG on XDR buffer overflow * %-EMSGSIZE if the size of the array exceeds @array_size */ static inline ssize_t xdr_stream_decode_uint32_array(struct xdr_stream *xdr, __u32 *array, size_t array_size) { __be32 *p; __u32 len; ssize_t retval; if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0)) return -EBADMSG; if (U32_MAX >= SIZE_MAX / sizeof(*p) && len > SIZE_MAX / sizeof(*p)) return -EBADMSG; p = xdr_inline_decode(xdr, len * sizeof(*p)); if (unlikely(!p)) return -EBADMSG; if (array == NULL) return len; if (len <= array_size) { if (len < array_size) memset(array+len, 0, (array_size-len)*sizeof(*array)); array_size = len; retval = len; } else retval = -EMSGSIZE; for (; array_size > 0; p++, array++, array_size--) *array = be32_to_cpup(p); return retval; } #endif /* _SUNRPC_XDR_H_ */ |
| 9 9 9 9 9 8 8 9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: hwxface - Public ACPICA hardware interfaces * * Copyright (C) 2000 - 2025, Intel Corp. * *****************************************************************************/ #define EXPORT_ACPI_INTERFACES #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwxface") /****************************************************************************** * * FUNCTION: acpi_reset * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Set reset register in memory or IO space. Note: Does not * support reset register in PCI config space, this must be * handled separately. * ******************************************************************************/ acpi_status acpi_reset(void) { struct acpi_generic_address *reset_reg; acpi_status status; ACPI_FUNCTION_TRACE(acpi_reset); reset_reg = &acpi_gbl_FADT.reset_register; /* Check if the reset register is supported */ if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) || !reset_reg->address) { return_ACPI_STATUS(AE_NOT_EXIST); } if (reset_reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) { /* * For I/O space, write directly to the OSL. This bypasses the port * validation mechanism, which may block a valid write to the reset * register. * * NOTE: * The ACPI spec requires the reset register width to be 8, so we * hardcode it here and ignore the FADT value. This maintains * compatibility with other ACPI implementations that have allowed * BIOS code with bad register width values to go unnoticed. */ status = acpi_os_write_port((acpi_io_address)reset_reg->address, acpi_gbl_FADT.reset_value, ACPI_RESET_REGISTER_WIDTH); } else { /* Write the reset value to the reset register */ status = acpi_hw_write(acpi_gbl_FADT.reset_value, reset_reg); } return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_reset) /****************************************************************************** * * FUNCTION: acpi_read * * PARAMETERS: value - Where the value is returned * reg - GAS register structure * * RETURN: Status * * DESCRIPTION: Read from either memory or IO space. * * LIMITATIONS: <These limitations also apply to acpi_write> * bit_width must be exactly 8, 16, 32, or 64. * space_ID must be system_memory or system_IO. * bit_offset and access_width are currently ignored, as there has * not been a need to implement these. * ******************************************************************************/ acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg) { acpi_status status; ACPI_FUNCTION_NAME(acpi_read); status = acpi_hw_read(return_value, reg); return (status); } ACPI_EXPORT_SYMBOL(acpi_read) /****************************************************************************** * * FUNCTION: acpi_write * * PARAMETERS: value - Value to be written * reg - GAS register structure * * RETURN: Status * * DESCRIPTION: Write to either memory or IO space. * ******************************************************************************/ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg) { acpi_status status; ACPI_FUNCTION_NAME(acpi_write); status = acpi_hw_write(value, reg); return (status); } ACPI_EXPORT_SYMBOL(acpi_write) #if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_read_bit_register * * PARAMETERS: register_id - ID of ACPI Bit Register to access * return_value - Value that was read from the register, * normalized to bit position zero. * * RETURN: Status and the value read from the specified Register. Value * returned is normalized to bit0 (is shifted all the way right) * * DESCRIPTION: ACPI bit_register read function. Does not acquire the HW lock. * * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and * PM2 Control. * * Note: The hardware lock is not required when reading the ACPI bit registers * since almost all of them are single bit and it does not matter that * the parent hardware register can be split across two physical * registers. The only multi-bit field is SLP_TYP in the PM1 control * register, but this field does not cross an 8-bit boundary (nor does * it make much sense to actually read this field.) * ******************************************************************************/ acpi_status acpi_read_bit_register(u32 register_id, u32 *return_value) { struct acpi_bit_register_info *bit_reg_info; u32 register_value; u32 value; acpi_status status; ACPI_FUNCTION_TRACE_U32(acpi_read_bit_register, register_id); /* Get the info structure corresponding to the requested ACPI Register */ bit_reg_info = acpi_hw_get_bit_register_info(register_id); if (!bit_reg_info) { return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Read the entire parent register */ status = acpi_hw_register_read(bit_reg_info->parent_register, ®ister_value); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Normalize the value that was read, mask off other bits */ value = ((register_value & bit_reg_info->access_bit_mask) >> bit_reg_info->bit_position); ACPI_DEBUG_PRINT((ACPI_DB_IO, "BitReg %X, ParentReg %X, Actual %8.8X, ReturnValue %8.8X\n", register_id, bit_reg_info->parent_register, register_value, value)); *return_value = value; return_ACPI_STATUS(AE_OK); } ACPI_EXPORT_SYMBOL(acpi_read_bit_register) /******************************************************************************* * * FUNCTION: acpi_write_bit_register * * PARAMETERS: register_id - ID of ACPI Bit Register to access * value - Value to write to the register, in bit * position zero. The bit is automatically * shifted to the correct position. * * RETURN: Status * * DESCRIPTION: ACPI Bit Register write function. Acquires the hardware lock * since most operations require a read/modify/write sequence. * * SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and * PM2 Control. * * Note that at this level, the fact that there may be actually two * hardware registers (A and B - and B may not exist) is abstracted. * ******************************************************************************/ acpi_status acpi_write_bit_register(u32 register_id, u32 value) { struct acpi_bit_register_info *bit_reg_info; acpi_cpu_flags lock_flags; u32 register_value; acpi_status status = AE_OK; ACPI_FUNCTION_TRACE_U32(acpi_write_bit_register, register_id); /* Get the info structure corresponding to the requested ACPI Register */ bit_reg_info = acpi_hw_get_bit_register_info(register_id); if (!bit_reg_info) { return_ACPI_STATUS(AE_BAD_PARAMETER); } lock_flags = acpi_os_acquire_raw_lock(acpi_gbl_hardware_lock); /* * At this point, we know that the parent register is one of the * following: PM1 Status, PM1 Enable, PM1 Control, or PM2 Control */ if (bit_reg_info->parent_register != ACPI_REGISTER_PM1_STATUS) { /* * 1) Case for PM1 Enable, PM1 Control, and PM2 Control * * Perform a register read to preserve the bits that we are not * interested in */ status = acpi_hw_register_read(bit_reg_info->parent_register, ®ister_value); if (ACPI_FAILURE(status)) { goto unlock_and_exit; } /* * Insert the input bit into the value that was just read * and write the register */ ACPI_REGISTER_INSERT_VALUE(register_value, bit_reg_info->bit_position, bit_reg_info->access_bit_mask, value); status = acpi_hw_register_write(bit_reg_info->parent_register, register_value); } else { /* * 2) Case for PM1 Status * * The Status register is different from the rest. Clear an event * by writing 1, writing 0 has no effect. So, the only relevant * information is the single bit we're interested in, all others * should be written as 0 so they will be left unchanged. */ register_value = ACPI_REGISTER_PREPARE_BITS(value, bit_reg_info-> bit_position, bit_reg_info-> access_bit_mask); /* No need to write the register if value is all zeros */ if (register_value) { status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS, register_value); } } ACPI_DEBUG_PRINT((ACPI_DB_IO, "BitReg %X, ParentReg %X, Value %8.8X, Actual %8.8X\n", register_id, bit_reg_info->parent_register, value, register_value)); unlock_and_exit: acpi_os_release_raw_lock(acpi_gbl_hardware_lock, lock_flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_write_bit_register) #endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: acpi_get_sleep_type_data * * PARAMETERS: sleep_state - Numeric sleep state * *sleep_type_a - Where SLP_TYPa is returned * *sleep_type_b - Where SLP_TYPb is returned * * RETURN: Status * * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested * sleep state via the appropriate \_Sx object. * * The sleep state package returned from the corresponding \_Sx_ object * must contain at least one integer. * * March 2005: * Added support for a package that contains two integers. This * goes against the ACPI specification which defines this object as a * package with one encoded DWORD integer. However, existing practice * by many BIOS vendors is to return a package with 2 or more integer * elements, at least one per sleep type (A/B). * * January 2013: * Therefore, we must be prepared to accept a package with either a * single integer or multiple integers. * * The single integer DWORD format is as follows: * BYTE 0 - Value for the PM1A SLP_TYP register * BYTE 1 - Value for the PM1B SLP_TYP register * BYTE 2-3 - Reserved * * The dual integer format is as follows: * Integer 0 - Value for the PM1A SLP_TYP register * Integer 1 - Value for the PM1A SLP_TYP register * ******************************************************************************/ acpi_status acpi_get_sleep_type_data(u8 sleep_state, u8 *sleep_type_a, u8 *sleep_type_b) { acpi_status status; struct acpi_evaluate_info *info; union acpi_operand_object **elements; ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data); /* Validate parameters */ if ((sleep_state > ACPI_S_STATES_MAX) || !sleep_type_a || !sleep_type_b) { return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Allocate the evaluation information block */ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); if (!info) { return_ACPI_STATUS(AE_NO_MEMORY); } /* * Evaluate the \_Sx namespace object containing the register values * for this state */ info->relative_pathname = acpi_gbl_sleep_state_names[sleep_state]; status = acpi_ns_evaluate(info); if (ACPI_FAILURE(status)) { if (status == AE_NOT_FOUND) { /* The _Sx states are optional, ignore NOT_FOUND */ goto final_cleanup; } goto warning_cleanup; } /* Must have a return object */ if (!info->return_object) { ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]", info->relative_pathname)); status = AE_AML_NO_RETURN_VALUE; goto warning_cleanup; } /* Return object must be of type Package */ if (info->return_object->common.type != ACPI_TYPE_PACKAGE) { ACPI_ERROR((AE_INFO, "Sleep State return object is not a Package")); status = AE_AML_OPERAND_TYPE; goto return_value_cleanup; } /* * Any warnings about the package length or the object types have * already been issued by the predefined name module -- there is no * need to repeat them here. */ elements = info->return_object->package.elements; switch (info->return_object->package.count) { case 0: status = AE_AML_PACKAGE_LIMIT; break; case 1: if (elements[0]->common.type != ACPI_TYPE_INTEGER) { status = AE_AML_OPERAND_TYPE; break; } /* A valid _Sx_ package with one integer */ *sleep_type_a = (u8)elements[0]->integer.value; *sleep_type_b = (u8)(elements[0]->integer.value >> 8); break; case 2: default: if ((elements[0]->common.type != ACPI_TYPE_INTEGER) || (elements[1]->common.type != ACPI_TYPE_INTEGER)) { status = AE_AML_OPERAND_TYPE; break; } /* A valid _Sx_ package with two integers */ *sleep_type_a = (u8)elements[0]->integer.value; *sleep_type_b = (u8)elements[1]->integer.value; break; } return_value_cleanup: acpi_ut_remove_reference(info->return_object); warning_cleanup: if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "While evaluating Sleep State [%s]", info->relative_pathname)); } final_cleanup: ACPI_FREE(info); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data) |
| 16 16 16 16 16 6 6 5 6 6 4 4 3 5 16 8 9 6 6 9 3 6 16 12 8 12 16 2 1 1 8 8 8 8 8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 | // SPDX-License-Identifier: GPL-2.0-or-later /* * The AEGIS-128 Authenticated-Encryption Algorithm * * Copyright (c) 2017-2018 Ondrej Mosnacek <omosnacek@gmail.com> * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved. */ #include <crypto/algapi.h> #include <crypto/internal/aead.h> #include <crypto/internal/simd.h> #include <crypto/internal/skcipher.h> #include <crypto/scatterwalk.h> #include <linux/err.h> #include <linux/init.h> #include <linux/jump_label.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/scatterlist.h> #include <asm/simd.h> #include "aegis.h" #define AEGIS128_NONCE_SIZE 16 #define AEGIS128_STATE_BLOCKS 5 #define AEGIS128_KEY_SIZE 16 #define AEGIS128_MIN_AUTH_SIZE 8 #define AEGIS128_MAX_AUTH_SIZE 16 struct aegis_state { union aegis_block blocks[AEGIS128_STATE_BLOCKS]; }; struct aegis_ctx { union aegis_block key; }; static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_simd); static const union aegis_block crypto_aegis_const[2] = { { .words64 = { cpu_to_le64(U64_C(0x0d08050302010100)), cpu_to_le64(U64_C(0x6279e99059372215)), } }, { .words64 = { cpu_to_le64(U64_C(0xf12fc26d55183ddb)), cpu_to_le64(U64_C(0xdd28b57342311120)), } }, }; static bool aegis128_do_simd(void) { #ifdef CONFIG_CRYPTO_AEGIS128_SIMD if (static_branch_likely(&have_simd)) return crypto_simd_usable(); #endif return false; } static void crypto_aegis128_update(struct aegis_state *state) { union aegis_block tmp; unsigned int i; tmp = state->blocks[AEGIS128_STATE_BLOCKS - 1]; for (i = AEGIS128_STATE_BLOCKS - 1; i > 0; i--) crypto_aegis_aesenc(&state->blocks[i], &state->blocks[i - 1], &state->blocks[i]); crypto_aegis_aesenc(&state->blocks[0], &tmp, &state->blocks[0]); } static void crypto_aegis128_update_a(struct aegis_state *state, const union aegis_block *msg, bool do_simd) { if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) { crypto_aegis128_update_simd(state, msg); return; } crypto_aegis128_update(state); crypto_aegis_block_xor(&state->blocks[0], msg); } static void crypto_aegis128_update_u(struct aegis_state *state, const void *msg, bool do_simd) { if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && do_simd) { crypto_aegis128_update_simd(state, msg); return; } crypto_aegis128_update(state); crypto_xor(state->blocks[0].bytes, msg, AEGIS_BLOCK_SIZE); } static void crypto_aegis128_init(struct aegis_state *state, const union aegis_block *key, const u8 *iv) { union aegis_block key_iv; unsigned int i; key_iv = *key; crypto_xor(key_iv.bytes, iv, AEGIS_BLOCK_SIZE); state->blocks[0] = key_iv; state->blocks[1] = crypto_aegis_const[1]; state->blocks[2] = crypto_aegis_const[0]; state->blocks[3] = *key; state->blocks[4] = *key; crypto_aegis_block_xor(&state->blocks[3], &crypto_aegis_const[0]); crypto_aegis_block_xor(&state->blocks[4], &crypto_aegis_const[1]); for (i = 0; i < 5; i++) { crypto_aegis128_update_a(state, key, false); crypto_aegis128_update_a(state, &key_iv, false); } } static void crypto_aegis128_ad(struct aegis_state *state, const u8 *src, unsigned int size, bool do_simd) { if (AEGIS_ALIGNED(src)) { const union aegis_block *src_blk = (const union aegis_block *)src; while (size >= AEGIS_BLOCK_SIZE) { crypto_aegis128_update_a(state, src_blk, do_simd); size -= AEGIS_BLOCK_SIZE; src_blk++; } } else { while (size >= AEGIS_BLOCK_SIZE) { crypto_aegis128_update_u(state, src, do_simd); size -= AEGIS_BLOCK_SIZE; src += AEGIS_BLOCK_SIZE; } } } static void crypto_aegis128_wipe_chunk(struct aegis_state *state, u8 *dst, const u8 *src, unsigned int size) { memzero_explicit(dst, size); } static void crypto_aegis128_encrypt_chunk(struct aegis_state *state, u8 *dst, const u8 *src, unsigned int size) { union aegis_block tmp; if (AEGIS_ALIGNED(src) && AEGIS_ALIGNED(dst)) { while (size >= AEGIS_BLOCK_SIZE) { union aegis_block *dst_blk = (union aegis_block *)dst; const union aegis_block *src_blk = (const union aegis_block *)src; tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_aegis_block_xor(&tmp, src_blk); crypto_aegis128_update_a(state, src_blk, false); *dst_blk = tmp; size -= AEGIS_BLOCK_SIZE; src += AEGIS_BLOCK_SIZE; dst += AEGIS_BLOCK_SIZE; } } else { while (size >= AEGIS_BLOCK_SIZE) { tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_xor(tmp.bytes, src, AEGIS_BLOCK_SIZE); crypto_aegis128_update_u(state, src, false); memcpy(dst, tmp.bytes, AEGIS_BLOCK_SIZE); size -= AEGIS_BLOCK_SIZE; src += AEGIS_BLOCK_SIZE; dst += AEGIS_BLOCK_SIZE; } } if (size > 0) { union aegis_block msg = {}; memcpy(msg.bytes, src, size); tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_aegis128_update_a(state, &msg, false); crypto_aegis_block_xor(&msg, &tmp); memcpy(dst, msg.bytes, size); } } static void crypto_aegis128_decrypt_chunk(struct aegis_state *state, u8 *dst, const u8 *src, unsigned int size) { union aegis_block tmp; if (AEGIS_ALIGNED(src) && AEGIS_ALIGNED(dst)) { while (size >= AEGIS_BLOCK_SIZE) { union aegis_block *dst_blk = (union aegis_block *)dst; const union aegis_block *src_blk = (const union aegis_block *)src; tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_aegis_block_xor(&tmp, src_blk); crypto_aegis128_update_a(state, &tmp, false); *dst_blk = tmp; size -= AEGIS_BLOCK_SIZE; src += AEGIS_BLOCK_SIZE; dst += AEGIS_BLOCK_SIZE; } } else { while (size >= AEGIS_BLOCK_SIZE) { tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_xor(tmp.bytes, src, AEGIS_BLOCK_SIZE); crypto_aegis128_update_a(state, &tmp, false); memcpy(dst, tmp.bytes, AEGIS_BLOCK_SIZE); size -= AEGIS_BLOCK_SIZE; src += AEGIS_BLOCK_SIZE; dst += AEGIS_BLOCK_SIZE; } } if (size > 0) { union aegis_block msg = {}; memcpy(msg.bytes, src, size); tmp = state->blocks[2]; crypto_aegis_block_and(&tmp, &state->blocks[3]); crypto_aegis_block_xor(&tmp, &state->blocks[4]); crypto_aegis_block_xor(&tmp, &state->blocks[1]); crypto_aegis_block_xor(&msg, &tmp); memset(msg.bytes + size, 0, AEGIS_BLOCK_SIZE - size); crypto_aegis128_update_a(state, &msg, false); memcpy(dst, msg.bytes, size); } } static void crypto_aegis128_process_ad(struct aegis_state *state, struct scatterlist *sg_src, unsigned int assoclen, bool do_simd) { struct scatter_walk walk; union aegis_block buf; unsigned int pos = 0; scatterwalk_start(&walk, sg_src); while (assoclen != 0) { unsigned int size = scatterwalk_next(&walk, assoclen); const u8 *src = walk.addr; unsigned int left = size; if (pos + size >= AEGIS_BLOCK_SIZE) { if (pos > 0) { unsigned int fill = AEGIS_BLOCK_SIZE - pos; memcpy(buf.bytes + pos, src, fill); crypto_aegis128_update_a(state, &buf, do_simd); pos = 0; left -= fill; src += fill; } crypto_aegis128_ad(state, src, left, do_simd); src += left & ~(AEGIS_BLOCK_SIZE - 1); left &= AEGIS_BLOCK_SIZE - 1; } memcpy(buf.bytes + pos, src, left); pos += left; assoclen -= size; scatterwalk_done_src(&walk, size); } if (pos > 0) { memset(buf.bytes + pos, 0, AEGIS_BLOCK_SIZE - pos); crypto_aegis128_update_a(state, &buf, do_simd); } } static __always_inline int crypto_aegis128_process_crypt(struct aegis_state *state, struct skcipher_walk *walk, void (*crypt)(struct aegis_state *state, u8 *dst, const u8 *src, unsigned int size)) { int err = 0; while (walk->nbytes) { unsigned int nbytes = walk->nbytes; if (nbytes < walk->total) nbytes = round_down(nbytes, walk->stride); crypt(state, walk->dst.virt.addr, walk->src.virt.addr, nbytes); err = skcipher_walk_done(walk, walk->nbytes - nbytes); } return err; } static void crypto_aegis128_final(struct aegis_state *state, union aegis_block *tag_xor, u64 assoclen, u64 cryptlen) { u64 assocbits = assoclen * 8; u64 cryptbits = cryptlen * 8; union aegis_block tmp; unsigned int i; tmp.words64[0] = cpu_to_le64(assocbits); tmp.words64[1] = cpu_to_le64(cryptbits); crypto_aegis_block_xor(&tmp, &state->blocks[3]); for (i = 0; i < 7; i++) crypto_aegis128_update_a(state, &tmp, false); for (i = 0; i < AEGIS128_STATE_BLOCKS; i++) crypto_aegis_block_xor(tag_xor, &state->blocks[i]); } static int crypto_aegis128_setkey(struct crypto_aead *aead, const u8 *key, unsigned int keylen) { struct aegis_ctx *ctx = crypto_aead_ctx(aead); if (keylen != AEGIS128_KEY_SIZE) return -EINVAL; memcpy(ctx->key.bytes, key, AEGIS128_KEY_SIZE); return 0; } static int crypto_aegis128_setauthsize(struct crypto_aead *tfm, unsigned int authsize) { if (authsize > AEGIS128_MAX_AUTH_SIZE) return -EINVAL; if (authsize < AEGIS128_MIN_AUTH_SIZE) return -EINVAL; return 0; } static int crypto_aegis128_encrypt_generic(struct aead_request *req) { struct crypto_aead *tfm = crypto_aead_reqtfm(req); union aegis_block tag = {}; unsigned int authsize = crypto_aead_authsize(tfm); struct aegis_ctx *ctx = crypto_aead_ctx(tfm); unsigned int cryptlen = req->cryptlen; struct skcipher_walk walk; struct aegis_state state; skcipher_walk_aead_encrypt(&walk, req, false); crypto_aegis128_init(&state, &ctx->key, req->iv); crypto_aegis128_process_ad(&state, req->src, req->assoclen, false); crypto_aegis128_process_crypt(&state, &walk, crypto_aegis128_encrypt_chunk); crypto_aegis128_final(&state, &tag, req->assoclen, cryptlen); scatterwalk_map_and_copy(tag.bytes, req->dst, req->assoclen + cryptlen, authsize, 1); return 0; } static int crypto_aegis128_decrypt_generic(struct aead_request *req) { static const u8 zeros[AEGIS128_MAX_AUTH_SIZE] = {}; struct crypto_aead *tfm = crypto_aead_reqtfm(req); union aegis_block tag; unsigned int authsize = crypto_aead_authsize(tfm); unsigned int cryptlen = req->cryptlen - authsize; struct aegis_ctx *ctx = crypto_aead_ctx(tfm); struct skcipher_walk walk; struct aegis_state state; scatterwalk_map_and_copy(tag.bytes, req->src, req->assoclen + cryptlen, authsize, 0); skcipher_walk_aead_decrypt(&walk, req, false); crypto_aegis128_init(&state, &ctx->key, req->iv); crypto_aegis128_process_ad(&state, req->src, req->assoclen, false); crypto_aegis128_process_crypt(&state, &walk, crypto_aegis128_decrypt_chunk); crypto_aegis128_final(&state, &tag, req->assoclen, cryptlen); if (unlikely(crypto_memneq(tag.bytes, zeros, authsize))) { /* * From Chapter 4. 'Security Analysis' of the AEGIS spec [0] * * "3. If verification fails, the decrypted plaintext and the * wrong authentication tag should not be given as output." * * [0] https://competitions.cr.yp.to/round3/aegisv11.pdf */ skcipher_walk_aead_decrypt(&walk, req, false); crypto_aegis128_process_crypt(NULL, &walk, crypto_aegis128_wipe_chunk); memzero_explicit(&tag, sizeof(tag)); return -EBADMSG; } return 0; } static int crypto_aegis128_encrypt_simd(struct aead_request *req) { struct crypto_aead *tfm = crypto_aead_reqtfm(req); union aegis_block tag = {}; unsigned int authsize = crypto_aead_authsize(tfm); struct aegis_ctx *ctx = crypto_aead_ctx(tfm); unsigned int cryptlen = req->cryptlen; struct skcipher_walk walk; struct aegis_state state; if (!aegis128_do_simd()) return crypto_aegis128_encrypt_generic(req); skcipher_walk_aead_encrypt(&walk, req, false); crypto_aegis128_init_simd(&state, &ctx->key, req->iv); crypto_aegis128_process_ad(&state, req->src, req->assoclen, true); crypto_aegis128_process_crypt(&state, &walk, crypto_aegis128_encrypt_chunk_simd); crypto_aegis128_final_simd(&state, &tag, req->assoclen, cryptlen, 0); scatterwalk_map_and_copy(tag.bytes, req->dst, req->assoclen + cryptlen, authsize, 1); return 0; } static int crypto_aegis128_decrypt_simd(struct aead_request *req) { struct crypto_aead *tfm = crypto_aead_reqtfm(req); union aegis_block tag; unsigned int authsize = crypto_aead_authsize(tfm); unsigned int cryptlen = req->cryptlen - authsize; struct aegis_ctx *ctx = crypto_aead_ctx(tfm); struct skcipher_walk walk; struct aegis_state state; if (!aegis128_do_simd()) return crypto_aegis128_decrypt_generic(req); scatterwalk_map_and_copy(tag.bytes, req->src, req->assoclen + cryptlen, authsize, 0); skcipher_walk_aead_decrypt(&walk, req, false); crypto_aegis128_init_simd(&state, &ctx->key, req->iv); crypto_aegis128_process_ad(&state, req->src, req->assoclen, true); crypto_aegis128_process_crypt(&state, &walk, crypto_aegis128_decrypt_chunk_simd); if (unlikely(crypto_aegis128_final_simd(&state, &tag, req->assoclen, cryptlen, authsize))) { skcipher_walk_aead_decrypt(&walk, req, false); crypto_aegis128_process_crypt(NULL, &walk, crypto_aegis128_wipe_chunk); return -EBADMSG; } return 0; } static struct aead_alg crypto_aegis128_alg_generic = { .setkey = crypto_aegis128_setkey, .setauthsize = crypto_aegis128_setauthsize, .encrypt = crypto_aegis128_encrypt_generic, .decrypt = crypto_aegis128_decrypt_generic, .ivsize = AEGIS128_NONCE_SIZE, .maxauthsize = AEGIS128_MAX_AUTH_SIZE, .chunksize = AEGIS_BLOCK_SIZE, .base.cra_blocksize = 1, .base.cra_ctxsize = sizeof(struct aegis_ctx), .base.cra_priority = 100, .base.cra_name = "aegis128", .base.cra_driver_name = "aegis128-generic", .base.cra_module = THIS_MODULE, }; static struct aead_alg crypto_aegis128_alg_simd = { .setkey = crypto_aegis128_setkey, .setauthsize = crypto_aegis128_setauthsize, .encrypt = crypto_aegis128_encrypt_simd, .decrypt = crypto_aegis128_decrypt_simd, .ivsize = AEGIS128_NONCE_SIZE, .maxauthsize = AEGIS128_MAX_AUTH_SIZE, .chunksize = AEGIS_BLOCK_SIZE, .base.cra_blocksize = 1, .base.cra_ctxsize = sizeof(struct aegis_ctx), .base.cra_priority = 200, .base.cra_name = "aegis128", .base.cra_driver_name = "aegis128-simd", .base.cra_module = THIS_MODULE, }; static int __init crypto_aegis128_module_init(void) { int ret; ret = crypto_register_aead(&crypto_aegis128_alg_generic); if (ret) return ret; if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && crypto_aegis128_have_simd()) { ret = crypto_register_aead(&crypto_aegis128_alg_simd); if (ret) { crypto_unregister_aead(&crypto_aegis128_alg_generic); return ret; } static_branch_enable(&have_simd); } return 0; } static void __exit crypto_aegis128_module_exit(void) { if (IS_ENABLED(CONFIG_CRYPTO_AEGIS128_SIMD) && crypto_aegis128_have_simd()) crypto_unregister_aead(&crypto_aegis128_alg_simd); crypto_unregister_aead(&crypto_aegis128_alg_generic); } module_init(crypto_aegis128_module_init); module_exit(crypto_aegis128_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Ondrej Mosnacek <omosnacek@gmail.com>"); MODULE_DESCRIPTION("AEGIS-128 AEAD algorithm"); MODULE_ALIAS_CRYPTO("aegis128"); MODULE_ALIAS_CRYPTO("aegis128-generic"); MODULE_ALIAS_CRYPTO("aegis128-simd"); |
| 6 6 6 6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _SOCK_REUSEPORT_H #define _SOCK_REUSEPORT_H #include <linux/filter.h> #include <linux/skbuff.h> #include <linux/types.h> #include <linux/spinlock.h> #include <net/sock.h> extern spinlock_t reuseport_lock; struct sock_reuseport { struct rcu_head rcu; u16 max_socks; /* length of socks */ u16 num_socks; /* elements in socks */ u16 num_closed_socks; /* closed elements in socks */ u16 incoming_cpu; /* The last synq overflow event timestamp of this * reuse->socks[] group. */ unsigned int synq_overflow_ts; /* ID stays the same even after the size of socks[] grows. */ unsigned int reuseport_id; unsigned int bind_inany:1; unsigned int has_conns:1; struct bpf_prog __rcu *prog; /* optional BPF sock selector */ struct sock *socks[] __counted_by(max_socks); }; extern int reuseport_alloc(struct sock *sk, bool bind_inany); extern int reuseport_add_sock(struct sock *sk, struct sock *sk2, bool bind_inany); extern void reuseport_detach_sock(struct sock *sk); void reuseport_stop_listen_sock(struct sock *sk); extern struct sock *reuseport_select_sock(struct sock *sk, u32 hash, struct sk_buff *skb, int hdr_len); struct sock *reuseport_migrate_sock(struct sock *sk, struct sock *migrating_sk, struct sk_buff *skb); extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog); extern int reuseport_detach_prog(struct sock *sk); static inline bool reuseport_has_conns(struct sock *sk) { struct sock_reuseport *reuse; bool ret = false; rcu_read_lock(); reuse = rcu_dereference(sk->sk_reuseport_cb); if (reuse && reuse->has_conns) ret = true; rcu_read_unlock(); return ret; } void reuseport_has_conns_set(struct sock *sk); void reuseport_update_incoming_cpu(struct sock *sk, int val); #endif /* _SOCK_REUSEPORT_H */ |
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1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2001 Momchil Velikov * Portions Copyright (C) 2001 Christoph Hellwig * Copyright (C) 2005 SGI, Christoph Lameter * Copyright (C) 2006 Nick Piggin * Copyright (C) 2012 Konstantin Khlebnikov * Copyright (C) 2016 Intel, Matthew Wilcox * Copyright (C) 2016 Intel, Ross Zwisler */ #include <linux/bitmap.h> #include <linux/bitops.h> #include <linux/bug.h> #include <linux/cpu.h> #include <linux/errno.h> #include <linux/export.h> #include <linux/idr.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/kmemleak.h> #include <linux/percpu.h> #include <linux/preempt.h> /* in_interrupt() */ #include <linux/radix-tree.h> #include <linux/rcupdate.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/xarray.h> #include "radix-tree.h" /* * Radix tree node cache. */ struct kmem_cache *radix_tree_node_cachep; /* * The radix tree is variable-height, so an insert operation not only has * to build the branch to its corresponding item, it also has to build the * branch to existing items if the size has to be increased (by * radix_tree_extend). * * The worst case is a zero height tree with just a single item at index 0, * and then inserting an item at index ULONG_MAX. This requires 2 new branches * of RADIX_TREE_MAX_PATH size to be created, with only the root node shared. * Hence: */ #define RADIX_TREE_PRELOAD_SIZE (RADIX_TREE_MAX_PATH * 2 - 1) /* * The IDR does not have to be as high as the radix tree since it uses * signed integers, not unsigned longs. */ #define IDR_INDEX_BITS (8 /* CHAR_BIT */ * sizeof(int) - 1) #define IDR_MAX_PATH (DIV_ROUND_UP(IDR_INDEX_BITS, \ RADIX_TREE_MAP_SHIFT)) #define IDR_PRELOAD_SIZE (IDR_MAX_PATH * 2 - 1) /* * Per-cpu pool of preloaded nodes */ DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { .lock = INIT_LOCAL_LOCK(lock), }; EXPORT_PER_CPU_SYMBOL_GPL(radix_tree_preloads); static inline struct radix_tree_node *entry_to_node(void *ptr) { return (void *)((unsigned long)ptr & ~RADIX_TREE_INTERNAL_NODE); } static inline void *node_to_entry(void *ptr) { return (void *)((unsigned long)ptr | RADIX_TREE_INTERNAL_NODE); } #define RADIX_TREE_RETRY XA_RETRY_ENTRY static inline unsigned long get_slot_offset(const struct radix_tree_node *parent, void __rcu **slot) { return parent ? slot - parent->slots : 0; } static unsigned int radix_tree_descend(const struct radix_tree_node *parent, struct radix_tree_node **nodep, unsigned long index) { unsigned int offset = (index >> parent->shift) & RADIX_TREE_MAP_MASK; void __rcu **entry = rcu_dereference_raw(parent->slots[offset]); *nodep = (void *)entry; return offset; } static inline gfp_t root_gfp_mask(const struct radix_tree_root *root) { return root->xa_flags & (__GFP_BITS_MASK & ~GFP_ZONEMASK); } static inline void tag_set(struct radix_tree_node *node, unsigned int tag, int offset) { __set_bit(offset, node->tags[tag]); } static inline void tag_clear(struct radix_tree_node *node, unsigned int tag, int offset) { __clear_bit(offset, node->tags[tag]); } static inline int tag_get(const struct radix_tree_node *node, unsigned int tag, int offset) { return test_bit(offset, node->tags[tag]); } static inline void root_tag_set(struct radix_tree_root *root, unsigned tag) { root->xa_flags |= (__force gfp_t)(1 << (tag + ROOT_TAG_SHIFT)); } static inline void root_tag_clear(struct radix_tree_root *root, unsigned tag) { root->xa_flags &= (__force gfp_t)~(1 << (tag + ROOT_TAG_SHIFT)); } static inline void root_tag_clear_all(struct radix_tree_root *root) { root->xa_flags &= (__force gfp_t)((1 << ROOT_TAG_SHIFT) - 1); } static inline int root_tag_get(const struct radix_tree_root *root, unsigned tag) { return (__force int)root->xa_flags & (1 << (tag + ROOT_TAG_SHIFT)); } static inline unsigned root_tags_get(const struct radix_tree_root *root) { return (__force unsigned)root->xa_flags >> ROOT_TAG_SHIFT; } static inline bool is_idr(const struct radix_tree_root *root) { return !!(root->xa_flags & ROOT_IS_IDR); } /* * Returns 1 if any slot in the node has this tag set. * Otherwise returns 0. */ static inline int any_tag_set(const struct radix_tree_node *node, unsigned int tag) { unsigned idx; for (idx = 0; idx < RADIX_TREE_TAG_LONGS; idx++) { if (node->tags[tag][idx]) return 1; } return 0; } static inline void all_tag_set(struct radix_tree_node *node, unsigned int tag) { bitmap_fill(node->tags[tag], RADIX_TREE_MAP_SIZE); } /** * radix_tree_find_next_bit - find the next set bit in a memory region * * @node: where to begin the search * @tag: the tag index * @offset: the bitnumber to start searching at * * Unrollable variant of find_next_bit() for constant size arrays. * Tail bits starting from size to roundup(size, BITS_PER_LONG) must be zero. * Returns next bit offset, or size if nothing found. */ static __always_inline unsigned long radix_tree_find_next_bit(struct radix_tree_node *node, unsigned int tag, unsigned long offset) { const unsigned long *addr = node->tags[tag]; if (offset < RADIX_TREE_MAP_SIZE) { unsigned long tmp; addr += offset / BITS_PER_LONG; tmp = *addr >> (offset % BITS_PER_LONG); if (tmp) return __ffs(tmp) + offset; offset = (offset + BITS_PER_LONG) & ~(BITS_PER_LONG - 1); while (offset < RADIX_TREE_MAP_SIZE) { tmp = *++addr; if (tmp) return __ffs(tmp) + offset; offset += BITS_PER_LONG; } } return RADIX_TREE_MAP_SIZE; } static unsigned int iter_offset(const struct radix_tree_iter *iter) { return iter->index & RADIX_TREE_MAP_MASK; } /* * The maximum index which can be stored in a radix tree */ static inline unsigned long shift_maxindex(unsigned int shift) { return (RADIX_TREE_MAP_SIZE << shift) - 1; } static inline unsigned long node_maxindex(const struct radix_tree_node *node) { return shift_maxindex(node->shift); } static unsigned long next_index(unsigned long index, const struct radix_tree_node *node, unsigned long offset) { return (index & ~node_maxindex(node)) + (offset << node->shift); } /* * This assumes that the caller has performed appropriate preallocation, and * that the caller has pinned this thread of control to the current CPU. */ static struct radix_tree_node * radix_tree_node_alloc(gfp_t gfp_mask, struct radix_tree_node *parent, struct radix_tree_root *root, unsigned int shift, unsigned int offset, unsigned int count, unsigned int nr_values) { struct radix_tree_node *ret = NULL; /* * Preload code isn't irq safe and it doesn't make sense to use * preloading during an interrupt anyway as all the allocations have * to be atomic. So just do normal allocation when in interrupt. */ if (!gfpflags_allow_blocking(gfp_mask) && !in_interrupt()) { struct radix_tree_preload *rtp; /* * Even if the caller has preloaded, try to allocate from the * cache first for the new node to get accounted to the memory * cgroup. */ ret = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask | __GFP_NOWARN); if (ret) goto out; /* * Provided the caller has preloaded here, we will always * succeed in getting a node here (and never reach * kmem_cache_alloc) */ rtp = this_cpu_ptr(&radix_tree_preloads); if (rtp->nr) { ret = rtp->nodes; rtp->nodes = ret->parent; rtp->nr--; } /* * Update the allocation stack trace as this is more useful * for debugging. */ kmemleak_update_trace(ret); goto out; } ret = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask); out: BUG_ON(radix_tree_is_internal_node(ret)); if (ret) { ret->shift = shift; ret->offset = offset; ret->count = count; ret->nr_values = nr_values; ret->parent = parent; ret->array = root; } return ret; } void radix_tree_node_rcu_free(struct rcu_head *head) { struct radix_tree_node *node = container_of(head, struct radix_tree_node, rcu_head); /* * Must only free zeroed nodes into the slab. We can be left with * non-NULL entries by radix_tree_free_nodes, so clear the entries * and tags here. */ memset(node->slots, 0, sizeof(node->slots)); memset(node->tags, 0, sizeof(node->tags)); INIT_LIST_HEAD(&node->private_list); kmem_cache_free(radix_tree_node_cachep, node); } static inline void radix_tree_node_free(struct radix_tree_node *node) { call_rcu(&node->rcu_head, radix_tree_node_rcu_free); } /* * Load up this CPU's radix_tree_node buffer with sufficient objects to * ensure that the addition of a single element in the tree cannot fail. On * success, return zero, with preemption disabled. On error, return -ENOMEM * with preemption not disabled. * * To make use of this facility, the radix tree must be initialised without * __GFP_DIRECT_RECLAIM being passed to INIT_RADIX_TREE(). */ static __must_check int __radix_tree_preload(gfp_t gfp_mask, unsigned nr) { struct radix_tree_preload *rtp; struct radix_tree_node *node; int ret = -ENOMEM; /* * Nodes preloaded by one cgroup can be used by another cgroup, so * they should never be accounted to any particular memory cgroup. */ gfp_mask &= ~__GFP_ACCOUNT; local_lock(&radix_tree_preloads.lock); rtp = this_cpu_ptr(&radix_tree_preloads); while (rtp->nr < nr) { local_unlock(&radix_tree_preloads.lock); node = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask); if (node == NULL) goto out; local_lock(&radix_tree_preloads.lock); rtp = this_cpu_ptr(&radix_tree_preloads); if (rtp->nr < nr) { node->parent = rtp->nodes; rtp->nodes = node; rtp->nr++; } else { kmem_cache_free(radix_tree_node_cachep, node); } } ret = 0; out: return ret; } /* * Load up this CPU's radix_tree_node buffer with sufficient objects to * ensure that the addition of a single element in the tree cannot fail. On * success, return zero, with preemption disabled. On error, return -ENOMEM * with preemption not disabled. * * To make use of this facility, the radix tree must be initialised without * __GFP_DIRECT_RECLAIM being passed to INIT_RADIX_TREE(). */ int radix_tree_preload(gfp_t gfp_mask) { /* Warn on non-sensical use... */ WARN_ON_ONCE(!gfpflags_allow_blocking(gfp_mask)); return __radix_tree_preload(gfp_mask, RADIX_TREE_PRELOAD_SIZE); } EXPORT_SYMBOL(radix_tree_preload); /* * The same as above function, except we don't guarantee preloading happens. * We do it, if we decide it helps. On success, return zero with preemption * disabled. On error, return -ENOMEM with preemption not disabled. */ int radix_tree_maybe_preload(gfp_t gfp_mask) { if (gfpflags_allow_blocking(gfp_mask)) return __radix_tree_preload(gfp_mask, RADIX_TREE_PRELOAD_SIZE); /* Preloading doesn't help anything with this gfp mask, skip it */ local_lock(&radix_tree_preloads.lock); return 0; } EXPORT_SYMBOL(radix_tree_maybe_preload); static unsigned radix_tree_load_root(const struct radix_tree_root *root, struct radix_tree_node **nodep, unsigned long *maxindex) { struct radix_tree_node *node = rcu_dereference_raw(root->xa_head); *nodep = node; if (likely(radix_tree_is_internal_node(node))) { node = entry_to_node(node); *maxindex = node_maxindex(node); return node->shift + RADIX_TREE_MAP_SHIFT; } *maxindex = 0; return 0; } /* * Extend a radix tree so it can store key @index. */ static int radix_tree_extend(struct radix_tree_root *root, gfp_t gfp, unsigned long index, unsigned int shift) { void *entry; unsigned int maxshift; int tag; /* Figure out what the shift should be. */ maxshift = shift; while (index > shift_maxindex(maxshift)) maxshift += RADIX_TREE_MAP_SHIFT; entry = rcu_dereference_raw(root->xa_head); if (!entry && (!is_idr(root) || root_tag_get(root, IDR_FREE))) goto out; do { struct radix_tree_node *node = radix_tree_node_alloc(gfp, NULL, root, shift, 0, 1, 0); if (!node) return -ENOMEM; if (is_idr(root)) { all_tag_set(node, IDR_FREE); if (!root_tag_get(root, IDR_FREE)) { tag_clear(node, IDR_FREE, 0); root_tag_set(root, IDR_FREE); } } else { /* Propagate the aggregated tag info to the new child */ for (tag = 0; tag < RADIX_TREE_MAX_TAGS; tag++) { if (root_tag_get(root, tag)) tag_set(node, tag, 0); } } BUG_ON(shift > BITS_PER_LONG); if (radix_tree_is_internal_node(entry)) { entry_to_node(entry)->parent = node; } else if (xa_is_value(entry)) { /* Moving a value entry root->xa_head to a node */ node->nr_values = 1; } /* * entry was already in the radix tree, so we do not need * rcu_assign_pointer here */ node->slots[0] = (void __rcu *)entry; entry = node_to_entry(node); rcu_assign_pointer(root->xa_head, entry); shift += RADIX_TREE_MAP_SHIFT; } while (shift <= maxshift); out: return maxshift + RADIX_TREE_MAP_SHIFT; } /** * radix_tree_shrink - shrink radix tree to minimum height * @root: radix tree root */ static inline bool radix_tree_shrink(struct radix_tree_root *root) { bool shrunk = false; for (;;) { struct radix_tree_node *node = rcu_dereference_raw(root->xa_head); struct radix_tree_node *child; if (!radix_tree_is_internal_node(node)) break; node = entry_to_node(node); /* * The candidate node has more than one child, or its child * is not at the leftmost slot, we cannot shrink. */ if (node->count != 1) break; child = rcu_dereference_raw(node->slots[0]); if (!child) break; /* * For an IDR, we must not shrink entry 0 into the root in * case somebody calls idr_replace() with a pointer that * appears to be an internal entry */ if (!node->shift && is_idr(root)) break; if (radix_tree_is_internal_node(child)) entry_to_node(child)->parent = NULL; /* * We don't need rcu_assign_pointer(), since we are simply * moving the node from one part of the tree to another: if it * was safe to dereference the old pointer to it * (node->slots[0]), it will be safe to dereference the new * one (root->xa_head) as far as dependent read barriers go. */ root->xa_head = (void __rcu *)child; if (is_idr(root) && !tag_get(node, IDR_FREE, 0)) root_tag_clear(root, IDR_FREE); /* * We have a dilemma here. The node's slot[0] must not be * NULLed in case there are concurrent lookups expecting to * find the item. However if this was a bottom-level node, * then it may be subject to the slot pointer being visible * to callers dereferencing it. If item corresponding to * slot[0] is subsequently deleted, these callers would expect * their slot to become empty sooner or later. * * For example, lockless pagecache will look up a slot, deref * the page pointer, and if the page has 0 refcount it means it * was concurrently deleted from pagecache so try the deref * again. Fortunately there is already a requirement for logic * to retry the entire slot lookup -- the indirect pointer * problem (replacing direct root node with an indirect pointer * also results in a stale slot). So tag the slot as indirect * to force callers to retry. */ node->count = 0; if (!radix_tree_is_internal_node(child)) { node->slots[0] = (void __rcu *)RADIX_TREE_RETRY; } WARN_ON_ONCE(!list_empty(&node->private_list)); radix_tree_node_free(node); shrunk = true; } return shrunk; } static bool delete_node(struct radix_tree_root *root, struct radix_tree_node *node) { bool deleted = false; do { struct radix_tree_node *parent; if (node->count) { if (node_to_entry(node) == rcu_dereference_raw(root->xa_head)) deleted |= radix_tree_shrink(root); return deleted; } parent = node->parent; if (parent) { parent->slots[node->offset] = NULL; parent->count--; } else { /* * Shouldn't the tags already have all been cleared * by the caller? */ if (!is_idr(root)) root_tag_clear_all(root); root->xa_head = NULL; } WARN_ON_ONCE(!list_empty(&node->private_list)); radix_tree_node_free(node); deleted = true; node = parent; } while (node); return deleted; } /** * __radix_tree_create - create a slot in a radix tree * @root: radix tree root * @index: index key * @nodep: returns node * @slotp: returns slot * * Create, if necessary, and return the node and slot for an item * at position @index in the radix tree @root. * * Until there is more than one item in the tree, no nodes are * allocated and @root->xa_head is used as a direct slot instead of * pointing to a node, in which case *@nodep will be NULL. * * Returns -ENOMEM, or 0 for success. */ static int __radix_tree_create(struct radix_tree_root *root, unsigned long index, struct radix_tree_node **nodep, void __rcu ***slotp) { struct radix_tree_node *node = NULL, *child; void __rcu **slot = (void __rcu **)&root->xa_head; unsigned long maxindex; unsigned int shift, offset = 0; unsigned long max = index; gfp_t gfp = root_gfp_mask(root); shift = radix_tree_load_root(root, &child, &maxindex); /* Make sure the tree is high enough. */ if (max > maxindex) { int error = radix_tree_extend(root, gfp, max, shift); if (error < 0) return error; shift = error; child = rcu_dereference_raw(root->xa_head); } while (shift > 0) { shift -= RADIX_TREE_MAP_SHIFT; if (child == NULL) { /* Have to add a child node. */ child = radix_tree_node_alloc(gfp, node, root, shift, offset, 0, 0); if (!child) return -ENOMEM; rcu_assign_pointer(*slot, node_to_entry(child)); if (node) node->count++; } else if (!radix_tree_is_internal_node(child)) break; /* Go a level down */ node = entry_to_node(child); offset = radix_tree_descend(node, &child, index); slot = &node->slots[offset]; } if (nodep) *nodep = node; if (slotp) *slotp = slot; return 0; } /* * Free any nodes below this node. The tree is presumed to not need * shrinking, and any user data in the tree is presumed to not need a * destructor called on it. If we need to add a destructor, we can * add that functionality later. Note that we may not clear tags or * slots from the tree as an RCU walker may still have a pointer into * this subtree. We could replace the entries with RADIX_TREE_RETRY, * but we'll still have to clear those in rcu_free. */ static void radix_tree_free_nodes(struct radix_tree_node *node) { unsigned offset = 0; struct radix_tree_node *child = entry_to_node(node); for (;;) { void *entry = rcu_dereference_raw(child->slots[offset]); if (xa_is_node(entry) && child->shift) { child = entry_to_node(entry); offset = 0; continue; } offset++; while (offset == RADIX_TREE_MAP_SIZE) { struct radix_tree_node *old = child; offset = child->offset + 1; child = child->parent; WARN_ON_ONCE(!list_empty(&old->private_list)); radix_tree_node_free(old); if (old == entry_to_node(node)) return; } } } static inline int insert_entries(struct radix_tree_node *node, void __rcu **slot, void *item) { if (*slot) return -EEXIST; rcu_assign_pointer(*slot, item); if (node) { node->count++; if (xa_is_value(item)) node->nr_values++; } return 1; } /** * radix_tree_insert - insert into a radix tree * @root: radix tree root * @index: index key * @item: item to insert * * Insert an item into the radix tree at position @index. */ int radix_tree_insert(struct radix_tree_root *root, unsigned long index, void *item) { struct radix_tree_node *node; void __rcu **slot; int error; BUG_ON(radix_tree_is_internal_node(item)); error = __radix_tree_create(root, index, &node, &slot); if (error) return error; error = insert_entries(node, slot, item); if (error < 0) return error; if (node) { unsigned offset = get_slot_offset(node, slot); BUG_ON(tag_get(node, 0, offset)); BUG_ON(tag_get(node, 1, offset)); BUG_ON(tag_get(node, 2, offset)); } else { BUG_ON(root_tags_get(root)); } return 0; } EXPORT_SYMBOL(radix_tree_insert); /** * __radix_tree_lookup - lookup an item in a radix tree * @root: radix tree root * @index: index key * @nodep: returns node * @slotp: returns slot * * Lookup and return the item at position @index in the radix * tree @root. * * Until there is more than one item in the tree, no nodes are * allocated and @root->xa_head is used as a direct slot instead of * pointing to a node, in which case *@nodep will be NULL. */ void *__radix_tree_lookup(const struct radix_tree_root *root, unsigned long index, struct radix_tree_node **nodep, void __rcu ***slotp) { struct radix_tree_node *node, *parent; unsigned long maxindex; void __rcu **slot; restart: parent = NULL; slot = (void __rcu **)&root->xa_head; radix_tree_load_root(root, &node, &maxindex); if (index > maxindex) return NULL; while (radix_tree_is_internal_node(node)) { unsigned offset; parent = entry_to_node(node); offset = radix_tree_descend(parent, &node, index); slot = parent->slots + offset; if (node == RADIX_TREE_RETRY) goto restart; if (parent->shift == 0) break; } if (nodep) *nodep = parent; if (slotp) *slotp = slot; return node; } /** * radix_tree_lookup_slot - lookup a slot in a radix tree * @root: radix tree root * @index: index key * * Returns: the slot corresponding to the position @index in the * radix tree @root. This is useful for update-if-exists operations. * * This function can be called under rcu_read_lock iff the slot is not * modified by radix_tree_replace_slot, otherwise it must be called * exclusive from other writers. Any dereference of the slot must be done * using radix_tree_deref_slot. */ void __rcu **radix_tree_lookup_slot(const struct radix_tree_root *root, unsigned long index) { void __rcu **slot; if (!__radix_tree_lookup(root, index, NULL, &slot)) return NULL; return slot; } EXPORT_SYMBOL(radix_tree_lookup_slot); /** * radix_tree_lookup - perform lookup operation on a radix tree * @root: radix tree root * @index: index key * * Lookup the item at the position @index in the radix tree @root. * * This function can be called under rcu_read_lock, however the caller * must manage lifetimes of leaf nodes (eg. RCU may also be used to free * them safely). No RCU barriers are required to access or modify the * returned item, however. */ void *radix_tree_lookup(const struct radix_tree_root *root, unsigned long index) { return __radix_tree_lookup(root, index, NULL, NULL); } EXPORT_SYMBOL(radix_tree_lookup); static void replace_slot(void __rcu **slot, void *item, struct radix_tree_node *node, int count, int values) { if (node && (count || values)) { node->count += count; node->nr_values += values; } rcu_assign_pointer(*slot, item); } static bool node_tag_get(const struct radix_tree_root *root, const struct radix_tree_node *node, unsigned int tag, unsigned int offset) { if (node) return tag_get(node, tag, offset); return root_tag_get(root, tag); } /* * IDR users want to be able to store NULL in the tree, so if the slot isn't * free, don't adjust the count, even if it's transitioning between NULL and * non-NULL. For the IDA, we mark slots as being IDR_FREE while they still * have empty bits, but it only stores NULL in slots when they're being * deleted. */ static int calculate_count(struct radix_tree_root *root, struct radix_tree_node *node, void __rcu **slot, void *item, void *old) { if (is_idr(root)) { unsigned offset = get_slot_offset(node, slot); bool free = node_tag_get(root, node, IDR_FREE, offset); if (!free) return 0; if (!old) return 1; } return !!item - !!old; } /** * __radix_tree_replace - replace item in a slot * @root: radix tree root * @node: pointer to tree node * @slot: pointer to slot in @node * @item: new item to store in the slot. * * For use with __radix_tree_lookup(). Caller must hold tree write locked * across slot lookup and replacement. */ void __radix_tree_replace(struct radix_tree_root *root, struct radix_tree_node *node, void __rcu **slot, void *item) { void *old = rcu_dereference_raw(*slot); int values = !!xa_is_value(item) - !!xa_is_value(old); int count = calculate_count(root, node, slot, item, old); /* * This function supports replacing value entries and * deleting entries, but that needs accounting against the * node unless the slot is root->xa_head. */ WARN_ON_ONCE(!node && (slot != (void __rcu **)&root->xa_head) && (count || values)); replace_slot(slot, item, node, count, values); if (!node) return; delete_node(root, node); } /** * radix_tree_replace_slot - replace item in a slot * @root: radix tree root * @slot: pointer to slot * @item: new item to store in the slot. * * For use with radix_tree_lookup_slot() and * radix_tree_gang_lookup_tag_slot(). Caller must hold tree write locked * across slot lookup and replacement. * * NOTE: This cannot be used to switch between non-entries (empty slots), * regular entries, and value entries, as that requires accounting * inside the radix tree node. When switching from one type of entry or * deleting, use __radix_tree_lookup() and __radix_tree_replace() or * radix_tree_iter_replace(). */ void radix_tree_replace_slot(struct radix_tree_root *root, void __rcu **slot, void *item) { __radix_tree_replace(root, NULL, slot, item); } EXPORT_SYMBOL(radix_tree_replace_slot); /** * radix_tree_iter_replace - replace item in a slot * @root: radix tree root * @iter: iterator state * @slot: pointer to slot * @item: new item to store in the slot. * * For use with radix_tree_for_each_slot(). * Caller must hold tree write locked. */ void radix_tree_iter_replace(struct radix_tree_root *root, const struct radix_tree_iter *iter, void __rcu **slot, void *item) { __radix_tree_replace(root, iter->node, slot, item); } static void node_tag_set(struct radix_tree_root *root, struct radix_tree_node *node, unsigned int tag, unsigned int offset) { while (node) { if (tag_get(node, tag, offset)) return; tag_set(node, tag, offset); offset = node->offset; node = node->parent; } if (!root_tag_get(root, tag)) root_tag_set(root, tag); } /** * radix_tree_tag_set - set a tag on a radix tree node * @root: radix tree root * @index: index key * @tag: tag index * * Set the search tag (which must be < RADIX_TREE_MAX_TAGS) * corresponding to @index in the radix tree. From * the root all the way down to the leaf node. * * Returns the address of the tagged item. Setting a tag on a not-present * item is a bug. */ void *radix_tree_tag_set(struct radix_tree_root *root, unsigned long index, unsigned int tag) { struct radix_tree_node *node, *parent; unsigned long maxindex; radix_tree_load_root(root, &node, &maxindex); BUG_ON(index > maxindex); while (radix_tree_is_internal_node(node)) { unsigned offset; parent = entry_to_node(node); offset = radix_tree_descend(parent, &node, index); BUG_ON(!node); if (!tag_get(parent, tag, offset)) tag_set(parent, tag, offset); } /* set the root's tag bit */ if (!root_tag_get(root, tag)) root_tag_set(root, tag); return node; } EXPORT_SYMBOL(radix_tree_tag_set); static void node_tag_clear(struct radix_tree_root *root, struct radix_tree_node *node, unsigned int tag, unsigned int offset) { while (node) { if (!tag_get(node, tag, offset)) return; tag_clear(node, tag, offset); if (any_tag_set(node, tag)) return; offset = node->offset; node = node->parent; } /* clear the root's tag bit */ if (root_tag_get(root, tag)) root_tag_clear(root, tag); } /** * radix_tree_tag_clear - clear a tag on a radix tree node * @root: radix tree root * @index: index key * @tag: tag index * * Clear the search tag (which must be < RADIX_TREE_MAX_TAGS) * corresponding to @index in the radix tree. If this causes * the leaf node to have no tags set then clear the tag in the * next-to-leaf node, etc. * * Returns the address of the tagged item on success, else NULL. ie: * has the same return value and semantics as radix_tree_lookup(). */ void *radix_tree_tag_clear(struct radix_tree_root *root, unsigned long index, unsigned int tag) { struct radix_tree_node *node, *parent; unsigned long maxindex; int offset = 0; radix_tree_load_root(root, &node, &maxindex); if (index > maxindex) return NULL; parent = NULL; while (radix_tree_is_internal_node(node)) { parent = entry_to_node(node); offset = radix_tree_descend(parent, &node, index); } if (node) node_tag_clear(root, parent, tag, offset); return node; } EXPORT_SYMBOL(radix_tree_tag_clear); /** * radix_tree_iter_tag_clear - clear a tag on the current iterator entry * @root: radix tree root * @iter: iterator state * @tag: tag to clear */ void radix_tree_iter_tag_clear(struct radix_tree_root *root, const struct radix_tree_iter *iter, unsigned int tag) { node_tag_clear(root, iter->node, tag, iter_offset(iter)); } /** * radix_tree_tag_get - get a tag on a radix tree node * @root: radix tree root * @index: index key * @tag: tag index (< RADIX_TREE_MAX_TAGS) * * Return values: * * 0: tag not present or not set * 1: tag set * * Note that the return value of this function may not be relied on, even if * the RCU lock is held, unless tag modification and node deletion are excluded * from concurrency. */ int radix_tree_tag_get(const struct radix_tree_root *root, unsigned long index, unsigned int tag) { struct radix_tree_node *node, *parent; unsigned long maxindex; if (!root_tag_get(root, tag)) return 0; radix_tree_load_root(root, &node, &maxindex); if (index > maxindex) return 0; while (radix_tree_is_internal_node(node)) { unsigned offset; parent = entry_to_node(node); offset = radix_tree_descend(parent, &node, index); if (!tag_get(parent, tag, offset)) return 0; if (node == RADIX_TREE_RETRY) break; } return 1; } EXPORT_SYMBOL(radix_tree_tag_get); /* Construct iter->tags bit-mask from node->tags[tag] array */ static void set_iter_tags(struct radix_tree_iter *iter, struct radix_tree_node *node, unsigned offset, unsigned tag) { unsigned tag_long = offset / BITS_PER_LONG; unsigned tag_bit = offset % BITS_PER_LONG; if (!node) { iter->tags = 1; return; } iter->tags = node->tags[tag][tag_long] >> tag_bit; /* This never happens if RADIX_TREE_TAG_LONGS == 1 */ if (tag_long < RADIX_TREE_TAG_LONGS - 1) { /* Pick tags from next element */ if (tag_bit) iter->tags |= node->tags[tag][tag_long + 1] << (BITS_PER_LONG - tag_bit); /* Clip chunk size, here only BITS_PER_LONG tags */ iter->next_index = __radix_tree_iter_add(iter, BITS_PER_LONG); } } void __rcu **radix_tree_iter_resume(void __rcu **slot, struct radix_tree_iter *iter) { iter->index = __radix_tree_iter_add(iter, 1); iter->next_index = iter->index; iter->tags = 0; return NULL; } EXPORT_SYMBOL(radix_tree_iter_resume); /** * radix_tree_next_chunk - find next chunk of slots for iteration * * @root: radix tree root * @iter: iterator state * @flags: RADIX_TREE_ITER_* flags and tag index * Returns: pointer to chunk first slot, or NULL if iteration is over */ void __rcu **radix_tree_next_chunk(const struct radix_tree_root *root, struct radix_tree_iter *iter, unsigned flags) { unsigned tag = flags & RADIX_TREE_ITER_TAG_MASK; struct radix_tree_node *node, *child; unsigned long index, offset, maxindex; if ((flags & RADIX_TREE_ITER_TAGGED) && !root_tag_get(root, tag)) return NULL; /* * Catch next_index overflow after ~0UL. iter->index never overflows * during iterating; it can be zero only at the beginning. * And we cannot overflow iter->next_index in a single step, * because RADIX_TREE_MAP_SHIFT < BITS_PER_LONG. * * This condition also used by radix_tree_next_slot() to stop * contiguous iterating, and forbid switching to the next chunk. */ index = iter->next_index; if (!index && iter->index) return NULL; restart: radix_tree_load_root(root, &child, &maxindex); if (index > maxindex) return NULL; if (!child) return NULL; if (!radix_tree_is_internal_node(child)) { /* Single-slot tree */ iter->index = index; iter->next_index = maxindex + 1; iter->tags = 1; iter->node = NULL; return (void __rcu **)&root->xa_head; } do { node = entry_to_node(child); offset = radix_tree_descend(node, &child, index); if ((flags & RADIX_TREE_ITER_TAGGED) ? !tag_get(node, tag, offset) : !child) { /* Hole detected */ if (flags & RADIX_TREE_ITER_CONTIG) return NULL; if (flags & RADIX_TREE_ITER_TAGGED) offset = radix_tree_find_next_bit(node, tag, offset + 1); else while (++offset < RADIX_TREE_MAP_SIZE) { void *slot = rcu_dereference_raw( node->slots[offset]); if (slot) break; } index &= ~node_maxindex(node); index += offset << node->shift; /* Overflow after ~0UL */ if (!index) return NULL; if (offset == RADIX_TREE_MAP_SIZE) goto restart; child = rcu_dereference_raw(node->slots[offset]); } if (!child) goto restart; if (child == RADIX_TREE_RETRY) break; } while (node->shift && radix_tree_is_internal_node(child)); /* Update the iterator state */ iter->index = (index &~ node_maxindex(node)) | offset; iter->next_index = (index | node_maxindex(node)) + 1; iter->node = node; if (flags & RADIX_TREE_ITER_TAGGED) set_iter_tags(iter, node, offset, tag); return node->slots + offset; } EXPORT_SYMBOL(radix_tree_next_chunk); /** * radix_tree_gang_lookup - perform multiple lookup on a radix tree * @root: radix tree root * @results: where the results of the lookup are placed * @first_index: start the lookup from this key * @max_items: place up to this many items at *results * * Performs an index-ascending scan of the tree for present items. Places * them at *@results and returns the number of items which were placed at * *@results. * * The implementation is naive. * * Like radix_tree_lookup, radix_tree_gang_lookup may be called under * rcu_read_lock. In this case, rather than the returned results being * an atomic snapshot of the tree at a single point in time, the * semantics of an RCU protected gang lookup are as though multiple * radix_tree_lookups have been issued in individual locks, and results * stored in 'results'. */ unsigned int radix_tree_gang_lookup(const struct radix_tree_root *root, void **results, unsigned long first_index, unsigned int max_items) { struct radix_tree_iter iter; void __rcu **slot; unsigned int ret = 0; if (unlikely(!max_items)) return 0; radix_tree_for_each_slot(slot, root, &iter, first_index) { results[ret] = rcu_dereference_raw(*slot); if (!results[ret]) continue; if (radix_tree_is_internal_node(results[ret])) { slot = radix_tree_iter_retry(&iter); continue; } if (++ret == max_items) break; } return ret; } EXPORT_SYMBOL(radix_tree_gang_lookup); /** * radix_tree_gang_lookup_tag - perform multiple lookup on a radix tree * based on a tag * @root: radix tree root * @results: where the results of the lookup are placed * @first_index: start the lookup from this key * @max_items: place up to this many items at *results * @tag: the tag index (< RADIX_TREE_MAX_TAGS) * * Performs an index-ascending scan of the tree for present items which * have the tag indexed by @tag set. Places the items at *@results and * returns the number of items which were placed at *@results. */ unsigned int radix_tree_gang_lookup_tag(const struct radix_tree_root *root, void **results, unsigned long first_index, unsigned int max_items, unsigned int tag) { struct radix_tree_iter iter; void __rcu **slot; unsigned int ret = 0; if (unlikely(!max_items)) return 0; radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) { results[ret] = rcu_dereference_raw(*slot); if (!results[ret]) continue; if (radix_tree_is_internal_node(results[ret])) { slot = radix_tree_iter_retry(&iter); continue; } if (++ret == max_items) break; } return ret; } EXPORT_SYMBOL(radix_tree_gang_lookup_tag); /** * radix_tree_gang_lookup_tag_slot - perform multiple slot lookup on a * radix tree based on a tag * @root: radix tree root * @results: where the results of the lookup are placed * @first_index: start the lookup from this key * @max_items: place up to this many items at *results * @tag: the tag index (< RADIX_TREE_MAX_TAGS) * * Performs an index-ascending scan of the tree for present items which * have the tag indexed by @tag set. Places the slots at *@results and * returns the number of slots which were placed at *@results. */ unsigned int radix_tree_gang_lookup_tag_slot(const struct radix_tree_root *root, void __rcu ***results, unsigned long first_index, unsigned int max_items, unsigned int tag) { struct radix_tree_iter iter; void __rcu **slot; unsigned int ret = 0; if (unlikely(!max_items)) return 0; radix_tree_for_each_tagged(slot, root, &iter, first_index, tag) { results[ret] = slot; if (++ret == max_items) break; } return ret; } EXPORT_SYMBOL(radix_tree_gang_lookup_tag_slot); static bool __radix_tree_delete(struct radix_tree_root *root, struct radix_tree_node *node, void __rcu **slot) { void *old = rcu_dereference_raw(*slot); int values = xa_is_value(old) ? -1 : 0; unsigned offset = get_slot_offset(node, slot); int tag; if (is_idr(root)) node_tag_set(root, node, IDR_FREE, offset); else for (tag = 0; tag < RADIX_TREE_MAX_TAGS; tag++) node_tag_clear(root, node, tag, offset); replace_slot(slot, NULL, node, -1, values); return node && delete_node(root, node); } /** * radix_tree_iter_delete - delete the entry at this iterator position * @root: radix tree root * @iter: iterator state * @slot: pointer to slot * * Delete the entry at the position currently pointed to by the iterator. * This may result in the current node being freed; if it is, the iterator * is advanced so that it will not reference the freed memory. This * function may be called without any locking if there are no other threads * which can access this tree. */ void radix_tree_iter_delete(struct radix_tree_root *root, struct radix_tree_iter *iter, void __rcu **slot) { if (__radix_tree_delete(root, iter->node, slot)) iter->index = iter->next_index; } EXPORT_SYMBOL(radix_tree_iter_delete); /** * radix_tree_delete_item - delete an item from a radix tree * @root: radix tree root * @index: index key * @item: expected item * * Remove @item at @index from the radix tree rooted at @root. * * Return: the deleted entry, or %NULL if it was not present * or the entry at the given @index was not @item. */ void *radix_tree_delete_item(struct radix_tree_root *root, unsigned long index, void *item) { struct radix_tree_node *node = NULL; void __rcu **slot = NULL; void *entry; entry = __radix_tree_lookup(root, index, &node, &slot); if (!slot) return NULL; if (!entry && (!is_idr(root) || node_tag_get(root, node, IDR_FREE, get_slot_offset(node, slot)))) return NULL; if (item && entry != item) return NULL; __radix_tree_delete(root, node, slot); return entry; } EXPORT_SYMBOL(radix_tree_delete_item); /** * radix_tree_delete - delete an entry from a radix tree * @root: radix tree root * @index: index key * * Remove the entry at @index from the radix tree rooted at @root. * * Return: The deleted entry, or %NULL if it was not present. */ void *radix_tree_delete(struct radix_tree_root *root, unsigned long index) { return radix_tree_delete_item(root, index, NULL); } EXPORT_SYMBOL(radix_tree_delete); /** * radix_tree_tagged - test whether any items in the tree are tagged * @root: radix tree root * @tag: tag to test */ int radix_tree_tagged(const struct radix_tree_root *root, unsigned int tag) { return root_tag_get(root, tag); } EXPORT_SYMBOL(radix_tree_tagged); /** * idr_preload - preload for idr_alloc() * @gfp_mask: allocation mask to use for preloading * * Preallocate memory to use for the next call to idr_alloc(). This function * returns with preemption disabled. It will be enabled by idr_preload_end(). */ void idr_preload(gfp_t gfp_mask) { if (__radix_tree_preload(gfp_mask, IDR_PRELOAD_SIZE)) local_lock(&radix_tree_preloads.lock); } EXPORT_SYMBOL(idr_preload); void __rcu **idr_get_free(struct radix_tree_root *root, struct radix_tree_iter *iter, gfp_t gfp, unsigned long max) { struct radix_tree_node *node = NULL, *child; void __rcu **slot = (void __rcu **)&root->xa_head; unsigned long maxindex, start = iter->next_index; unsigned int shift, offset = 0; grow: shift = radix_tree_load_root(root, &child, &maxindex); if (!radix_tree_tagged(root, IDR_FREE)) start = max(start, maxindex + 1); if (start > max) return ERR_PTR(-ENOSPC); if (start > maxindex) { int error = radix_tree_extend(root, gfp, start, shift); if (error < 0) return ERR_PTR(error); shift = error; child = rcu_dereference_raw(root->xa_head); } if (start == 0 && shift == 0) shift = RADIX_TREE_MAP_SHIFT; while (shift) { shift -= RADIX_TREE_MAP_SHIFT; if (child == NULL) { /* Have to add a child node. */ child = radix_tree_node_alloc(gfp, node, root, shift, offset, 0, 0); if (!child) return ERR_PTR(-ENOMEM); all_tag_set(child, IDR_FREE); rcu_assign_pointer(*slot, node_to_entry(child)); if (node) node->count++; } else if (!radix_tree_is_internal_node(child)) break; node = entry_to_node(child); offset = radix_tree_descend(node, &child, start); if (!tag_get(node, IDR_FREE, offset)) { offset = radix_tree_find_next_bit(node, IDR_FREE, offset + 1); start = next_index(start, node, offset); if (start > max || start == 0) return ERR_PTR(-ENOSPC); while (offset == RADIX_TREE_MAP_SIZE) { offset = node->offset + 1; node = node->parent; if (!node) goto grow; shift = node->shift; } child = rcu_dereference_raw(node->slots[offset]); } slot = &node->slots[offset]; } iter->index = start; if (node) iter->next_index = 1 + min(max, (start | node_maxindex(node))); else iter->next_index = 1; iter->node = node; set_iter_tags(iter, node, offset, IDR_FREE); return slot; } /** * idr_destroy - release all internal memory from an IDR * @idr: idr handle * * After this function is called, the IDR is empty, and may be reused or * the data structure containing it may be freed. * * A typical clean-up sequence for objects stored in an idr tree will use * idr_for_each() to free all objects, if necessary, then idr_destroy() to * free the memory used to keep track of those objects. */ void idr_destroy(struct idr *idr) { struct radix_tree_node *node = rcu_dereference_raw(idr->idr_rt.xa_head); if (radix_tree_is_internal_node(node)) radix_tree_free_nodes(node); idr->idr_rt.xa_head = NULL; root_tag_set(&idr->idr_rt, IDR_FREE); } EXPORT_SYMBOL(idr_destroy); static void radix_tree_node_ctor(void *arg) { struct radix_tree_node *node = arg; memset(node, 0, sizeof(*node)); INIT_LIST_HEAD(&node->private_list); } static int radix_tree_cpu_dead(unsigned int cpu) { struct radix_tree_preload *rtp; struct radix_tree_node *node; /* Free per-cpu pool of preloaded nodes */ rtp = &per_cpu(radix_tree_preloads, cpu); while (rtp->nr) { node = rtp->nodes; rtp->nodes = node->parent; kmem_cache_free(radix_tree_node_cachep, node); rtp->nr--; } return 0; } void __init radix_tree_init(void) { int ret; BUILD_BUG_ON(RADIX_TREE_MAX_TAGS + __GFP_BITS_SHIFT > 32); BUILD_BUG_ON(ROOT_IS_IDR & ~GFP_ZONEMASK); BUILD_BUG_ON(XA_CHUNK_SIZE > 255); radix_tree_node_cachep = kmem_cache_create("radix_tree_node", sizeof(struct radix_tree_node), 0, SLAB_PANIC | SLAB_RECLAIM_ACCOUNT, radix_tree_node_ctor); ret = cpuhp_setup_state_nocalls(CPUHP_RADIX_DEAD, "lib/radix:dead", NULL, radix_tree_cpu_dead); WARN_ON(ret < 0); } |
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GPL-2.0-only /* * (C) 1999-2001 Paul `Rusty' Russell * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org> * (C) 2011 Patrick McHardy <kaber@trash.net> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/types.h> #include <linux/timer.h> #include <linux/skbuff.h> #include <linux/gfp.h> #include <net/xfrm.h> #include <linux/siphash.h> #include <linux/rtnetlink.h> #include <net/netfilter/nf_conntrack_bpf.h> #include <net/netfilter/nf_conntrack_core.h> #include <net/netfilter/nf_conntrack_helper.h> #include <net/netfilter/nf_conntrack_seqadj.h> #include <net/netfilter/nf_conntrack_zones.h> #include <net/netfilter/nf_nat.h> #include <net/netfilter/nf_nat_helper.h> #include <uapi/linux/netfilter/nf_nat.h> #include "nf_internals.h" #define NF_NAT_MAX_ATTEMPTS 128 #define NF_NAT_HARDER_THRESH (NF_NAT_MAX_ATTEMPTS / 4) static spinlock_t nf_nat_locks[CONNTRACK_LOCKS]; static DEFINE_MUTEX(nf_nat_proto_mutex); static unsigned int nat_net_id __read_mostly; static struct hlist_head *nf_nat_bysource __read_mostly; static unsigned int nf_nat_htable_size __read_mostly; static siphash_aligned_key_t nf_nat_hash_rnd; struct nf_nat_lookup_hook_priv { struct nf_hook_entries __rcu *entries; struct rcu_head rcu_head; }; struct nf_nat_hooks_net { struct nf_hook_ops *nat_hook_ops; unsigned int users; }; struct nat_net { struct nf_nat_hooks_net nat_proto_net[NFPROTO_NUMPROTO]; }; #ifdef CONFIG_XFRM static void nf_nat_ipv4_decode_session(struct sk_buff *skb, const struct nf_conn *ct, enum ip_conntrack_dir dir, unsigned long statusbit, struct flowi *fl) { const struct nf_conntrack_tuple *t = &ct->tuplehash[dir].tuple; struct flowi4 *fl4 = &fl->u.ip4; if (ct->status & statusbit) { fl4->daddr = t->dst.u3.ip; if (t->dst.protonum == IPPROTO_TCP || t->dst.protonum == IPPROTO_UDP || t->dst.protonum == IPPROTO_SCTP) fl4->fl4_dport = t->dst.u.all; } statusbit ^= IPS_NAT_MASK; if (ct->status & statusbit) { fl4->saddr = t->src.u3.ip; if (t->dst.protonum == IPPROTO_TCP || t->dst.protonum == IPPROTO_UDP || t->dst.protonum == IPPROTO_SCTP) fl4->fl4_sport = t->src.u.all; } } static void nf_nat_ipv6_decode_session(struct sk_buff *skb, const struct nf_conn *ct, enum ip_conntrack_dir dir, unsigned long statusbit, struct flowi *fl) { #if IS_ENABLED(CONFIG_IPV6) const struct nf_conntrack_tuple *t = &ct->tuplehash[dir].tuple; struct flowi6 *fl6 = &fl->u.ip6; if (ct->status & statusbit) { fl6->daddr = t->dst.u3.in6; if (t->dst.protonum == IPPROTO_TCP || t->dst.protonum == IPPROTO_UDP || t->dst.protonum == IPPROTO_SCTP) fl6->fl6_dport = t->dst.u.all; } statusbit ^= IPS_NAT_MASK; if (ct->status & statusbit) { fl6->saddr = t->src.u3.in6; if (t->dst.protonum == IPPROTO_TCP || t->dst.protonum == IPPROTO_UDP || t->dst.protonum == IPPROTO_SCTP) fl6->fl6_sport = t->src.u.all; } #endif } static void __nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl) { const struct nf_conn *ct; enum ip_conntrack_info ctinfo; enum ip_conntrack_dir dir; unsigned long statusbit; u8 family; ct = nf_ct_get(skb, &ctinfo); if (ct == NULL) return; family = nf_ct_l3num(ct); dir = CTINFO2DIR(ctinfo); if (dir == IP_CT_DIR_ORIGINAL) statusbit = IPS_DST_NAT; else statusbit = IPS_SRC_NAT; switch (family) { case NFPROTO_IPV4: nf_nat_ipv4_decode_session(skb, ct, dir, statusbit, fl); return; case NFPROTO_IPV6: nf_nat_ipv6_decode_session(skb, ct, dir, statusbit, fl); return; } } #endif /* CONFIG_XFRM */ /* We keep an extra hash for each conntrack, for fast searching. */ static unsigned int hash_by_src(const struct net *net, const struct nf_conntrack_zone *zone, const struct nf_conntrack_tuple *tuple) { unsigned int hash; struct { struct nf_conntrack_man src; u32 net_mix; u32 protonum; u32 zone; } __aligned(SIPHASH_ALIGNMENT) combined; get_random_once(&nf_nat_hash_rnd, sizeof(nf_nat_hash_rnd)); memset(&combined, 0, sizeof(combined)); /* Original src, to ensure we map it consistently if poss. */ combined.src = tuple->src; combined.net_mix = net_hash_mix(net); combined.protonum = tuple->dst.protonum; /* Zone ID can be used provided its valid for both directions */ if (zone->dir == NF_CT_DEFAULT_ZONE_DIR) combined.zone = zone->id; hash = siphash(&combined, sizeof(combined), &nf_nat_hash_rnd); return reciprocal_scale(hash, nf_nat_htable_size); } /** * nf_nat_used_tuple - check if proposed nat tuple clashes with existing entry * @tuple: proposed NAT binding * @ignored_conntrack: our (unconfirmed) conntrack entry * * A conntrack entry can be inserted to the connection tracking table * if there is no existing entry with an identical tuple in either direction. * * Example: * INITIATOR -> NAT/PAT -> RESPONDER * * INITIATOR passes through NAT/PAT ("us") and SNAT is done (saddr rewrite). * Then, later, NAT/PAT itself also connects to RESPONDER. * * This will not work if the SNAT done earlier has same IP:PORT source pair. * * Conntrack table has: * ORIGINAL: $IP_INITIATOR:$SPORT -> $IP_RESPONDER:$DPORT * REPLY: $IP_RESPONDER:$DPORT -> $IP_NAT:$SPORT * * and new locally originating connection wants: * ORIGINAL: $IP_NAT:$SPORT -> $IP_RESPONDER:$DPORT * REPLY: $IP_RESPONDER:$DPORT -> $IP_NAT:$SPORT * * ... which would mean incoming packets cannot be distinguished between * the existing and the newly added entry (identical IP_CT_DIR_REPLY tuple). * * @return: true if the proposed NAT mapping collides with an existing entry. */ static int nf_nat_used_tuple(const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_conntrack) { /* Conntrack tracking doesn't keep track of outgoing tuples; only * incoming ones. NAT means they don't have a fixed mapping, * so we invert the tuple and look for the incoming reply. * * We could keep a separate hash if this proves too slow. */ struct nf_conntrack_tuple reply; nf_ct_invert_tuple(&reply, tuple); return nf_conntrack_tuple_taken(&reply, ignored_conntrack); } static bool nf_nat_allow_clash(const struct nf_conn *ct) { return nf_ct_l4proto_find(nf_ct_protonum(ct))->allow_clash; } /** * nf_nat_used_tuple_new - check if to-be-inserted conntrack collides with existing entry * @tuple: proposed NAT binding * @ignored_ct: our (unconfirmed) conntrack entry * * Same as nf_nat_used_tuple, but also check for rare clash in reverse * direction. Should be called only when @tuple has not been altered, i.e. * @ignored_conntrack will not be subject to NAT. * * @return: true if the proposed NAT mapping collides with existing entry. */ static noinline bool nf_nat_used_tuple_new(const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_ct) { static const unsigned long uses_nat = IPS_NAT_MASK | IPS_SEQ_ADJUST; const struct nf_conntrack_tuple_hash *thash; const struct nf_conntrack_zone *zone; struct nf_conn *ct; bool taken = true; struct net *net; if (!nf_nat_used_tuple(tuple, ignored_ct)) return false; if (!nf_nat_allow_clash(ignored_ct)) return true; /* Initial choice clashes with existing conntrack. * Check for (rare) reverse collision. * * This can happen when new packets are received in both directions * at the exact same time on different CPUs. * * Without SMP, first packet creates new conntrack entry and second * packet is resolved as established reply packet. * * With parallel processing, both packets could be picked up as * new and both get their own ct entry allocated. * * If ignored_conntrack and colliding ct are not subject to NAT then * pretend the tuple is available and let later clash resolution * handle this at insertion time. * * Without it, the 'reply' packet has its source port rewritten * by nat engine. */ if (READ_ONCE(ignored_ct->status) & uses_nat) return true; net = nf_ct_net(ignored_ct); zone = nf_ct_zone(ignored_ct); thash = nf_conntrack_find_get(net, zone, tuple); if (unlikely(!thash)) { struct nf_conntrack_tuple reply; nf_ct_invert_tuple(&reply, tuple); thash = nf_conntrack_find_get(net, zone, &reply); if (!thash) /* clashing entry went away */ return false; } ct = nf_ct_tuplehash_to_ctrack(thash); /* clashing connection subject to NAT? Retry with new tuple. */ if (READ_ONCE(ct->status) & uses_nat) goto out; if (nf_ct_tuple_equal(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, &ignored_ct->tuplehash[IP_CT_DIR_REPLY].tuple)) taken = false; out: nf_ct_put(ct); return taken; } static bool nf_nat_may_kill(struct nf_conn *ct, unsigned long flags) { static const unsigned long flags_refuse = IPS_FIXED_TIMEOUT | IPS_DYING; static const unsigned long flags_needed = IPS_SRC_NAT; enum tcp_conntrack old_state; old_state = READ_ONCE(ct->proto.tcp.state); if (old_state < TCP_CONNTRACK_TIME_WAIT) return false; if (flags & flags_refuse) return false; return (flags & flags_needed) == flags_needed; } /* reverse direction will send packets to new source, so * make sure such packets are invalid. */ static bool nf_seq_has_advanced(const struct nf_conn *old, const struct nf_conn *new) { return (__s32)(new->proto.tcp.seen[0].td_end - old->proto.tcp.seen[0].td_end) > 0; } static int nf_nat_used_tuple_harder(const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_conntrack, unsigned int attempts_left) { static const unsigned long flags_offload = IPS_OFFLOAD | IPS_HW_OFFLOAD; struct nf_conntrack_tuple_hash *thash; const struct nf_conntrack_zone *zone; struct nf_conntrack_tuple reply; unsigned long flags; struct nf_conn *ct; bool taken = true; struct net *net; nf_ct_invert_tuple(&reply, tuple); if (attempts_left > NF_NAT_HARDER_THRESH || tuple->dst.protonum != IPPROTO_TCP || ignored_conntrack->proto.tcp.state != TCP_CONNTRACK_SYN_SENT) return nf_conntrack_tuple_taken(&reply, ignored_conntrack); /* :ast few attempts to find a free tcp port. Destructive * action: evict colliding if its in timewait state and the * tcp sequence number has advanced past the one used by the * old entry. */ net = nf_ct_net(ignored_conntrack); zone = nf_ct_zone(ignored_conntrack); thash = nf_conntrack_find_get(net, zone, &reply); if (!thash) return false; ct = nf_ct_tuplehash_to_ctrack(thash); if (thash->tuple.dst.dir == IP_CT_DIR_ORIGINAL) goto out; if (WARN_ON_ONCE(ct == ignored_conntrack)) goto out; flags = READ_ONCE(ct->status); if (!nf_nat_may_kill(ct, flags)) goto out; if (!nf_seq_has_advanced(ct, ignored_conntrack)) goto out; /* Even if we can evict do not reuse if entry is offloaded. */ if (nf_ct_kill(ct)) taken = flags & flags_offload; out: nf_ct_put(ct); return taken; } static bool nf_nat_inet_in_range(const struct nf_conntrack_tuple *t, const struct nf_nat_range2 *range) { if (t->src.l3num == NFPROTO_IPV4) return ntohl(t->src.u3.ip) >= ntohl(range->min_addr.ip) && ntohl(t->src.u3.ip) <= ntohl(range->max_addr.ip); return ipv6_addr_cmp(&t->src.u3.in6, &range->min_addr.in6) >= 0 && ipv6_addr_cmp(&t->src.u3.in6, &range->max_addr.in6) <= 0; } /* Is the manipable part of the tuple between min and max incl? */ static bool l4proto_in_range(const struct nf_conntrack_tuple *tuple, enum nf_nat_manip_type maniptype, const union nf_conntrack_man_proto *min, const union nf_conntrack_man_proto *max) { __be16 port; switch (tuple->dst.protonum) { case IPPROTO_ICMP: case IPPROTO_ICMPV6: return ntohs(tuple->src.u.icmp.id) >= ntohs(min->icmp.id) && ntohs(tuple->src.u.icmp.id) <= ntohs(max->icmp.id); case IPPROTO_GRE: /* all fall though */ case IPPROTO_TCP: case IPPROTO_UDP: case IPPROTO_SCTP: if (maniptype == NF_NAT_MANIP_SRC) port = tuple->src.u.all; else port = tuple->dst.u.all; return ntohs(port) >= ntohs(min->all) && ntohs(port) <= ntohs(max->all); default: return true; } } /* If we source map this tuple so reply looks like reply_tuple, will * that meet the constraints of range. */ static int nf_in_range(const struct nf_conntrack_tuple *tuple, const struct nf_nat_range2 *range) { /* If we are supposed to map IPs, then we must be in the * range specified, otherwise let this drag us onto a new src IP. */ if (range->flags & NF_NAT_RANGE_MAP_IPS && !nf_nat_inet_in_range(tuple, range)) return 0; if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) return 1; return l4proto_in_range(tuple, NF_NAT_MANIP_SRC, &range->min_proto, &range->max_proto); } static inline int same_src(const struct nf_conn *ct, const struct nf_conntrack_tuple *tuple) { const struct nf_conntrack_tuple *t; t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple; return (t->dst.protonum == tuple->dst.protonum && nf_inet_addr_cmp(&t->src.u3, &tuple->src.u3) && t->src.u.all == tuple->src.u.all); } /* Only called for SRC manip */ static int find_appropriate_src(struct net *net, const struct nf_conntrack_zone *zone, const struct nf_conntrack_tuple *tuple, struct nf_conntrack_tuple *result, const struct nf_nat_range2 *range) { unsigned int h = hash_by_src(net, zone, tuple); const struct nf_conn *ct; hlist_for_each_entry_rcu(ct, &nf_nat_bysource[h], nat_bysource) { if (same_src(ct, tuple) && net_eq(net, nf_ct_net(ct)) && nf_ct_zone_equal(ct, zone, IP_CT_DIR_ORIGINAL)) { /* Copy source part from reply tuple. */ nf_ct_invert_tuple(result, &ct->tuplehash[IP_CT_DIR_REPLY].tuple); result->dst = tuple->dst; if (nf_in_range(result, range)) return 1; } } return 0; } /* For [FUTURE] fragmentation handling, we want the least-used * src-ip/dst-ip/proto triple. Fairness doesn't come into it. Thus * if the range specifies 1.2.3.4 ports 10000-10005 and 1.2.3.5 ports * 1-65535, we don't do pro-rata allocation based on ports; we choose * the ip with the lowest src-ip/dst-ip/proto usage. */ static void find_best_ips_proto(const struct nf_conntrack_zone *zone, struct nf_conntrack_tuple *tuple, const struct nf_nat_range2 *range, const struct nf_conn *ct, enum nf_nat_manip_type maniptype) { union nf_inet_addr *var_ipp; unsigned int i, max; /* Host order */ u32 minip, maxip, j, dist; bool full_range; /* No IP mapping? Do nothing. */ if (!(range->flags & NF_NAT_RANGE_MAP_IPS)) return; if (maniptype == NF_NAT_MANIP_SRC) var_ipp = &tuple->src.u3; else var_ipp = &tuple->dst.u3; /* Fast path: only one choice. */ if (nf_inet_addr_cmp(&range->min_addr, &range->max_addr)) { *var_ipp = range->min_addr; return; } if (nf_ct_l3num(ct) == NFPROTO_IPV4) max = sizeof(var_ipp->ip) / sizeof(u32) - 1; else max = sizeof(var_ipp->ip6) / sizeof(u32) - 1; /* Hashing source and destination IPs gives a fairly even * spread in practice (if there are a small number of IPs * involved, there usually aren't that many connections * anyway). The consistency means that servers see the same * client coming from the same IP (some Internet Banking sites * like this), even across reboots. */ j = jhash2((u32 *)&tuple->src.u3, sizeof(tuple->src.u3) / sizeof(u32), range->flags & NF_NAT_RANGE_PERSISTENT ? 0 : (__force u32)tuple->dst.u3.all[max] ^ zone->id); full_range = false; for (i = 0; i <= max; i++) { /* If first bytes of the address are at the maximum, use the * distance. Otherwise use the full range. */ if (!full_range) { minip = ntohl((__force __be32)range->min_addr.all[i]); maxip = ntohl((__force __be32)range->max_addr.all[i]); dist = maxip - minip + 1; } else { minip = 0; dist = ~0; } var_ipp->all[i] = (__force __u32) htonl(minip + reciprocal_scale(j, dist)); if (var_ipp->all[i] != range->max_addr.all[i]) full_range = true; if (!(range->flags & NF_NAT_RANGE_PERSISTENT)) j ^= (__force u32)tuple->dst.u3.all[i]; } } /* Alter the per-proto part of the tuple (depending on maniptype), to * give a unique tuple in the given range if possible. * * Per-protocol part of tuple is initialized to the incoming packet. */ static void nf_nat_l4proto_unique_tuple(struct nf_conntrack_tuple *tuple, const struct nf_nat_range2 *range, enum nf_nat_manip_type maniptype, const struct nf_conn *ct) { unsigned int range_size, min, max, i, attempts; __be16 *keyptr; u16 off; switch (tuple->dst.protonum) { case IPPROTO_ICMP: case IPPROTO_ICMPV6: /* id is same for either direction... */ keyptr = &tuple->src.u.icmp.id; if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) { min = 0; range_size = 65536; } else { min = ntohs(range->min_proto.icmp.id); range_size = ntohs(range->max_proto.icmp.id) - ntohs(range->min_proto.icmp.id) + 1; } goto find_free_id; #if IS_ENABLED(CONFIG_NF_CT_PROTO_GRE) case IPPROTO_GRE: /* If there is no master conntrack we are not PPTP, do not change tuples */ if (!ct->master) return; if (maniptype == NF_NAT_MANIP_SRC) keyptr = &tuple->src.u.gre.key; else keyptr = &tuple->dst.u.gre.key; if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) { min = 1; range_size = 65535; } else { min = ntohs(range->min_proto.gre.key); range_size = ntohs(range->max_proto.gre.key) - min + 1; } goto find_free_id; #endif case IPPROTO_UDP: case IPPROTO_TCP: case IPPROTO_SCTP: if (maniptype == NF_NAT_MANIP_SRC) keyptr = &tuple->src.u.all; else keyptr = &tuple->dst.u.all; break; default: return; } /* If no range specified... */ if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED)) { /* If it's dst rewrite, can't change port */ if (maniptype == NF_NAT_MANIP_DST) return; if (ntohs(*keyptr) < 1024) { /* Loose convention: >> 512 is credential passing */ if (ntohs(*keyptr) < 512) { min = 1; range_size = 511 - min + 1; } else { min = 600; range_size = 1023 - min + 1; } } else { min = 1024; range_size = 65535 - 1024 + 1; } } else { min = ntohs(range->min_proto.all); max = ntohs(range->max_proto.all); if (unlikely(max < min)) swap(max, min); range_size = max - min + 1; } find_free_id: if (range->flags & NF_NAT_RANGE_PROTO_OFFSET) off = (ntohs(*keyptr) - ntohs(range->base_proto.all)); else if ((range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL) || maniptype != NF_NAT_MANIP_DST) off = get_random_u16(); else off = 0; attempts = range_size; if (attempts > NF_NAT_MAX_ATTEMPTS) attempts = NF_NAT_MAX_ATTEMPTS; /* We are in softirq; doing a search of the entire range risks * soft lockup when all tuples are already used. * * If we can't find any free port from first offset, pick a new * one and try again, with ever smaller search window. */ another_round: for (i = 0; i < attempts; i++, off++) { *keyptr = htons(min + off % range_size); if (!nf_nat_used_tuple_harder(tuple, ct, attempts - i)) return; } if (attempts >= range_size || attempts < 16) return; attempts /= 2; off = get_random_u16(); goto another_round; } /* Manipulate the tuple into the range given. For NF_INET_POST_ROUTING, * we change the source to map into the range. For NF_INET_PRE_ROUTING * and NF_INET_LOCAL_OUT, we change the destination to map into the * range. It might not be possible to get a unique tuple, but we try. * At worst (or if we race), we will end up with a final duplicate in * __nf_conntrack_confirm and drop the packet. */ static void get_unique_tuple(struct nf_conntrack_tuple *tuple, const struct nf_conntrack_tuple *orig_tuple, const struct nf_nat_range2 *range, struct nf_conn *ct, enum nf_nat_manip_type maniptype) { const struct nf_conntrack_zone *zone; struct net *net = nf_ct_net(ct); zone = nf_ct_zone(ct); /* 1) If this srcip/proto/src-proto-part is currently mapped, * and that same mapping gives a unique tuple within the given * range, use that. * * This is only required for source (ie. NAT/masq) mappings. * So far, we don't do local source mappings, so multiple * manips not an issue. */ if (maniptype == NF_NAT_MANIP_SRC && !(range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL)) { /* try the original tuple first */ if (nf_in_range(orig_tuple, range)) { if (!nf_nat_used_tuple_new(orig_tuple, ct)) { *tuple = *orig_tuple; return; } } else if (find_appropriate_src(net, zone, orig_tuple, tuple, range)) { pr_debug("get_unique_tuple: Found current src map\n"); if (!nf_nat_used_tuple(tuple, ct)) return; } } /* 2) Select the least-used IP/proto combination in the given range */ *tuple = *orig_tuple; find_best_ips_proto(zone, tuple, range, ct, maniptype); /* 3) The per-protocol part of the manip is made to map into * the range to make a unique tuple. */ /* Only bother mapping if it's not already in range and unique */ if (!(range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL)) { if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) { if (!(range->flags & NF_NAT_RANGE_PROTO_OFFSET) && l4proto_in_range(tuple, maniptype, &range->min_proto, &range->max_proto) && (range->min_proto.all == range->max_proto.all || !nf_nat_used_tuple(tuple, ct))) return; } else if (!nf_nat_used_tuple(tuple, ct)) { return; } } /* Last chance: get protocol to try to obtain unique tuple. */ nf_nat_l4proto_unique_tuple(tuple, range, maniptype, ct); } struct nf_conn_nat *nf_ct_nat_ext_add(struct nf_conn *ct) { struct nf_conn_nat *nat = nfct_nat(ct); if (nat) return nat; if (!nf_ct_is_confirmed(ct)) nat = nf_ct_ext_add(ct, NF_CT_EXT_NAT, GFP_ATOMIC); return nat; } EXPORT_SYMBOL_GPL(nf_ct_nat_ext_add); unsigned int nf_nat_setup_info(struct nf_conn *ct, const struct nf_nat_range2 *range, enum nf_nat_manip_type maniptype) { struct net *net = nf_ct_net(ct); struct nf_conntrack_tuple curr_tuple, new_tuple; /* Can't setup nat info for confirmed ct. */ if (nf_ct_is_confirmed(ct)) return NF_ACCEPT; WARN_ON(maniptype != NF_NAT_MANIP_SRC && maniptype != NF_NAT_MANIP_DST); if (WARN_ON(nf_nat_initialized(ct, maniptype))) return NF_DROP; /* What we've got will look like inverse of reply. Normally * this is what is in the conntrack, except for prior * manipulations (future optimization: if num_manips == 0, * orig_tp = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple) */ nf_ct_invert_tuple(&curr_tuple, &ct->tuplehash[IP_CT_DIR_REPLY].tuple); get_unique_tuple(&new_tuple, &curr_tuple, range, ct, maniptype); if (!nf_ct_tuple_equal(&new_tuple, &curr_tuple)) { struct nf_conntrack_tuple reply; /* Alter conntrack table so will recognize replies. */ nf_ct_invert_tuple(&reply, &new_tuple); nf_conntrack_alter_reply(ct, &reply); /* Non-atomic: we own this at the moment. */ if (maniptype == NF_NAT_MANIP_SRC) ct->status |= IPS_SRC_NAT; else ct->status |= IPS_DST_NAT; if (nfct_help(ct) && !nfct_seqadj(ct)) if (!nfct_seqadj_ext_add(ct)) return NF_DROP; } if (maniptype == NF_NAT_MANIP_SRC) { unsigned int srchash; spinlock_t *lock; srchash = hash_by_src(net, nf_ct_zone(ct), &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple); lock = &nf_nat_locks[srchash % CONNTRACK_LOCKS]; spin_lock_bh(lock); hlist_add_head_rcu(&ct->nat_bysource, &nf_nat_bysource[srchash]); spin_unlock_bh(lock); } /* It's done. */ if (maniptype == NF_NAT_MANIP_DST) ct->status |= IPS_DST_NAT_DONE; else ct->status |= IPS_SRC_NAT_DONE; return NF_ACCEPT; } EXPORT_SYMBOL(nf_nat_setup_info); static unsigned int __nf_nat_alloc_null_binding(struct nf_conn *ct, enum nf_nat_manip_type manip) { /* Force range to this IP; let proto decide mapping for * per-proto parts (hence not IP_NAT_RANGE_PROTO_SPECIFIED). * Use reply in case it's already been mangled (eg local packet). */ union nf_inet_addr ip = (manip == NF_NAT_MANIP_SRC ? ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3 : ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3); struct nf_nat_range2 range = { .flags = NF_NAT_RANGE_MAP_IPS, .min_addr = ip, .max_addr = ip, }; return nf_nat_setup_info(ct, &range, manip); } unsigned int nf_nat_alloc_null_binding(struct nf_conn *ct, unsigned int hooknum) { return __nf_nat_alloc_null_binding(ct, HOOK2MANIP(hooknum)); } EXPORT_SYMBOL_GPL(nf_nat_alloc_null_binding); /* Do packet manipulations according to nf_nat_setup_info. */ unsigned int nf_nat_packet(struct nf_conn *ct, enum ip_conntrack_info ctinfo, unsigned int hooknum, struct sk_buff *skb) { enum nf_nat_manip_type mtype = HOOK2MANIP(hooknum); enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); unsigned int verdict = NF_ACCEPT; unsigned long statusbit; if (mtype == NF_NAT_MANIP_SRC) statusbit = IPS_SRC_NAT; else statusbit = IPS_DST_NAT; /* Invert if this is reply dir. */ if (dir == IP_CT_DIR_REPLY) statusbit ^= IPS_NAT_MASK; /* Non-atomic: these bits don't change. */ if (ct->status & statusbit) verdict = nf_nat_manip_pkt(skb, ct, mtype, dir); return verdict; } EXPORT_SYMBOL_GPL(nf_nat_packet); static bool in_vrf_postrouting(const struct nf_hook_state *state) { #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) if (state->hook == NF_INET_POST_ROUTING && netif_is_l3_master(state->out)) return true; #endif return false; } unsigned int nf_nat_inet_fn(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) { struct nf_conn *ct; enum ip_conntrack_info ctinfo; struct nf_conn_nat *nat; /* maniptype == SRC for postrouting. */ enum nf_nat_manip_type maniptype = HOOK2MANIP(state->hook); ct = nf_ct_get(skb, &ctinfo); /* Can't track? It's not due to stress, or conntrack would * have dropped it. Hence it's the user's responsibilty to * packet filter it out, or implement conntrack/NAT for that * protocol. 8) --RR */ if (!ct || in_vrf_postrouting(state)) return NF_ACCEPT; nat = nfct_nat(ct); switch (ctinfo) { case IP_CT_RELATED: case IP_CT_RELATED_REPLY: /* Only ICMPs can be IP_CT_IS_REPLY. Fallthrough */ case IP_CT_NEW: /* Seen it before? This can happen for loopback, retrans, * or local packets. */ if (!nf_nat_initialized(ct, maniptype)) { struct nf_nat_lookup_hook_priv *lpriv = priv; struct nf_hook_entries *e = rcu_dereference(lpriv->entries); unsigned int ret; int i; if (!e) goto null_bind; for (i = 0; i < e->num_hook_entries; i++) { ret = e->hooks[i].hook(e->hooks[i].priv, skb, state); if (ret != NF_ACCEPT) return ret; if (nf_nat_initialized(ct, maniptype)) goto do_nat; } null_bind: ret = nf_nat_alloc_null_binding(ct, state->hook); if (ret != NF_ACCEPT) return ret; } else { pr_debug("Already setup manip %s for ct %p (status bits 0x%lx)\n", maniptype == NF_NAT_MANIP_SRC ? "SRC" : "DST", ct, ct->status); if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out)) goto oif_changed; } break; default: /* ESTABLISHED */ WARN_ON(ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY); if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out)) goto oif_changed; } do_nat: return nf_nat_packet(ct, ctinfo, state->hook, skb); oif_changed: nf_ct_kill_acct(ct, ctinfo, skb); return NF_DROP; } EXPORT_SYMBOL_GPL(nf_nat_inet_fn); struct nf_nat_proto_clean { u8 l3proto; u8 l4proto; }; /* kill conntracks with affected NAT section */ static int nf_nat_proto_remove(struct nf_conn *i, void *data) { const struct nf_nat_proto_clean *clean = data; if ((clean->l3proto && nf_ct_l3num(i) != clean->l3proto) || (clean->l4proto && nf_ct_protonum(i) != clean->l4proto)) return 0; return i->status & IPS_NAT_MASK ? 1 : 0; } static void nf_nat_cleanup_conntrack(struct nf_conn *ct) { unsigned int h; h = hash_by_src(nf_ct_net(ct), nf_ct_zone(ct), &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple); spin_lock_bh(&nf_nat_locks[h % CONNTRACK_LOCKS]); hlist_del_rcu(&ct->nat_bysource); spin_unlock_bh(&nf_nat_locks[h % CONNTRACK_LOCKS]); } static int nf_nat_proto_clean(struct nf_conn *ct, void *data) { if (nf_nat_proto_remove(ct, data)) return 1; /* This module is being removed and conntrack has nat null binding. * Remove it from bysource hash, as the table will be freed soon. * * Else, when the conntrack is destoyed, nf_nat_cleanup_conntrack() * will delete entry from already-freed table. */ if (test_and_clear_bit(IPS_SRC_NAT_DONE_BIT, &ct->status)) nf_nat_cleanup_conntrack(ct); /* don't delete conntrack. Although that would make things a lot * simpler, we'd end up flushing all conntracks on nat rmmod. */ return 0; } #if IS_ENABLED(CONFIG_NF_CT_NETLINK) #include <linux/netfilter/nfnetlink.h> #include <linux/netfilter/nfnetlink_conntrack.h> static const struct nla_policy protonat_nla_policy[CTA_PROTONAT_MAX+1] = { [CTA_PROTONAT_PORT_MIN] = { .type = NLA_U16 }, [CTA_PROTONAT_PORT_MAX] = { .type = NLA_U16 }, }; static int nf_nat_l4proto_nlattr_to_range(struct nlattr *tb[], struct nf_nat_range2 *range) { if (tb[CTA_PROTONAT_PORT_MIN]) { range->min_proto.all = nla_get_be16(tb[CTA_PROTONAT_PORT_MIN]); range->max_proto.all = range->min_proto.all; range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED; } if (tb[CTA_PROTONAT_PORT_MAX]) { range->max_proto.all = nla_get_be16(tb[CTA_PROTONAT_PORT_MAX]); range->flags |= NF_NAT_RANGE_PROTO_SPECIFIED; } return 0; } static int nfnetlink_parse_nat_proto(struct nlattr *attr, const struct nf_conn *ct, struct nf_nat_range2 *range) { struct nlattr *tb[CTA_PROTONAT_MAX+1]; int err; err = nla_parse_nested_deprecated(tb, CTA_PROTONAT_MAX, attr, protonat_nla_policy, NULL); if (err < 0) return err; return nf_nat_l4proto_nlattr_to_range(tb, range); } static const struct nla_policy nat_nla_policy[CTA_NAT_MAX+1] = { [CTA_NAT_V4_MINIP] = { .type = NLA_U32 }, [CTA_NAT_V4_MAXIP] = { .type = NLA_U32 }, [CTA_NAT_V6_MINIP] = { .len = sizeof(struct in6_addr) }, [CTA_NAT_V6_MAXIP] = { .len = sizeof(struct in6_addr) }, [CTA_NAT_PROTO] = { .type = NLA_NESTED }, }; static int nf_nat_ipv4_nlattr_to_range(struct nlattr *tb[], struct nf_nat_range2 *range) { if (tb[CTA_NAT_V4_MINIP]) { range->min_addr.ip = nla_get_be32(tb[CTA_NAT_V4_MINIP]); range->flags |= NF_NAT_RANGE_MAP_IPS; } range->max_addr.ip = nla_get_be32_default(tb[CTA_NAT_V4_MAXIP], range->min_addr.ip); return 0; } static int nf_nat_ipv6_nlattr_to_range(struct nlattr *tb[], struct nf_nat_range2 *range) { if (tb[CTA_NAT_V6_MINIP]) { nla_memcpy(&range->min_addr.ip6, tb[CTA_NAT_V6_MINIP], sizeof(struct in6_addr)); range->flags |= NF_NAT_RANGE_MAP_IPS; } if (tb[CTA_NAT_V6_MAXIP]) nla_memcpy(&range->max_addr.ip6, tb[CTA_NAT_V6_MAXIP], sizeof(struct in6_addr)); else range->max_addr = range->min_addr; return 0; } static int nfnetlink_parse_nat(const struct nlattr *nat, const struct nf_conn *ct, struct nf_nat_range2 *range) { struct nlattr *tb[CTA_NAT_MAX+1]; int err; memset(range, 0, sizeof(*range)); err = nla_parse_nested_deprecated(tb, CTA_NAT_MAX, nat, nat_nla_policy, NULL); if (err < 0) return err; switch (nf_ct_l3num(ct)) { case NFPROTO_IPV4: err = nf_nat_ipv4_nlattr_to_range(tb, range); break; case NFPROTO_IPV6: err = nf_nat_ipv6_nlattr_to_range(tb, range); break; default: err = -EPROTONOSUPPORT; break; } if (err) return err; if (!tb[CTA_NAT_PROTO]) return 0; return nfnetlink_parse_nat_proto(tb[CTA_NAT_PROTO], ct, range); } /* This function is called under rcu_read_lock() */ static int nfnetlink_parse_nat_setup(struct nf_conn *ct, enum nf_nat_manip_type manip, const struct nlattr *attr) { struct nf_nat_range2 range; int err; /* Should not happen, restricted to creating new conntracks * via ctnetlink. */ if (WARN_ON_ONCE(nf_nat_initialized(ct, manip))) return -EEXIST; /* No NAT information has been passed, allocate the null-binding */ if (attr == NULL) return __nf_nat_alloc_null_binding(ct, manip) == NF_DROP ? -ENOMEM : 0; err = nfnetlink_parse_nat(attr, ct, &range); if (err < 0) return err; return nf_nat_setup_info(ct, &range, manip) == NF_DROP ? -ENOMEM : 0; } #else static int nfnetlink_parse_nat_setup(struct nf_conn *ct, enum nf_nat_manip_type manip, const struct nlattr *attr) { return -EOPNOTSUPP; } #endif static struct nf_ct_helper_expectfn follow_master_nat = { .name = "nat-follow-master", .expectfn = nf_nat_follow_master, }; int nf_nat_register_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops, const struct nf_hook_ops *orig_nat_ops, unsigned int ops_count) { struct nat_net *nat_net = net_generic(net, nat_net_id); struct nf_nat_hooks_net *nat_proto_net; struct nf_nat_lookup_hook_priv *priv; unsigned int hooknum = ops->hooknum; struct nf_hook_ops *nat_ops; int i, ret; if (WARN_ON_ONCE(pf >= ARRAY_SIZE(nat_net->nat_proto_net))) return -EINVAL; nat_proto_net = &nat_net->nat_proto_net[pf]; for (i = 0; i < ops_count; i++) { if (orig_nat_ops[i].hooknum == hooknum) { hooknum = i; break; } } if (WARN_ON_ONCE(i == ops_count)) return -EINVAL; mutex_lock(&nf_nat_proto_mutex); if (!nat_proto_net->nat_hook_ops) { WARN_ON(nat_proto_net->users != 0); nat_ops = kmemdup_array(orig_nat_ops, ops_count, sizeof(*orig_nat_ops), GFP_KERNEL); if (!nat_ops) { mutex_unlock(&nf_nat_proto_mutex); return -ENOMEM; } for (i = 0; i < ops_count; i++) { priv = kzalloc_obj(*priv); if (priv) { nat_ops[i].priv = priv; continue; } mutex_unlock(&nf_nat_proto_mutex); while (i) kfree(nat_ops[--i].priv); kfree(nat_ops); return -ENOMEM; } ret = nf_register_net_hooks(net, nat_ops, ops_count); if (ret < 0) { mutex_unlock(&nf_nat_proto_mutex); for (i = 0; i < ops_count; i++) { priv = nat_ops[i].priv; kfree_rcu(priv, rcu_head); } kfree_rcu(nat_ops, rcu); return ret; } nat_proto_net->nat_hook_ops = nat_ops; } nat_ops = nat_proto_net->nat_hook_ops; priv = nat_ops[hooknum].priv; if (WARN_ON_ONCE(!priv)) { mutex_unlock(&nf_nat_proto_mutex); return -EOPNOTSUPP; } ret = nf_hook_entries_insert_raw(&priv->entries, ops); if (ret == 0) nat_proto_net->users++; mutex_unlock(&nf_nat_proto_mutex); return ret; } void nf_nat_unregister_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops, unsigned int ops_count) { struct nat_net *nat_net = net_generic(net, nat_net_id); struct nf_nat_hooks_net *nat_proto_net; struct nf_nat_lookup_hook_priv *priv; struct nf_hook_ops *nat_ops; int hooknum = ops->hooknum; int i; if (pf >= ARRAY_SIZE(nat_net->nat_proto_net)) return; nat_proto_net = &nat_net->nat_proto_net[pf]; mutex_lock(&nf_nat_proto_mutex); if (WARN_ON(nat_proto_net->users == 0)) goto unlock; nat_proto_net->users--; nat_ops = nat_proto_net->nat_hook_ops; for (i = 0; i < ops_count; i++) { if (nat_ops[i].hooknum == hooknum) { hooknum = i; break; } } if (WARN_ON_ONCE(i == ops_count)) goto unlock; priv = nat_ops[hooknum].priv; nf_hook_entries_delete_raw(&priv->entries, ops); if (nat_proto_net->users == 0) { nf_unregister_net_hooks(net, nat_ops, ops_count); for (i = 0; i < ops_count; i++) { priv = nat_ops[i].priv; kfree_rcu(priv, rcu_head); } nat_proto_net->nat_hook_ops = NULL; kfree_rcu(nat_ops, rcu); } unlock: mutex_unlock(&nf_nat_proto_mutex); } static struct pernet_operations nat_net_ops = { .id = &nat_net_id, .size = sizeof(struct nat_net), }; static const struct nf_nat_hook nat_hook = { .parse_nat_setup = nfnetlink_parse_nat_setup, #ifdef CONFIG_XFRM .decode_session = __nf_nat_decode_session, #endif .remove_nat_bysrc = nf_nat_cleanup_conntrack, }; static int __init nf_nat_init(void) { int ret, i; /* Leave them the same for the moment. */ nf_nat_htable_size = nf_conntrack_htable_size; if (nf_nat_htable_size < CONNTRACK_LOCKS) nf_nat_htable_size = CONNTRACK_LOCKS; nf_nat_bysource = nf_ct_alloc_hashtable(&nf_nat_htable_size, 0); if (!nf_nat_bysource) return -ENOMEM; for (i = 0; i < CONNTRACK_LOCKS; i++) spin_lock_init(&nf_nat_locks[i]); ret = register_pernet_subsys(&nat_net_ops); if (ret < 0) { kvfree(nf_nat_bysource); return ret; } nf_ct_helper_expectfn_register(&follow_master_nat); WARN_ON(nf_nat_hook != NULL); RCU_INIT_POINTER(nf_nat_hook, &nat_hook); ret = register_nf_nat_bpf(); if (ret < 0) { RCU_INIT_POINTER(nf_nat_hook, NULL); nf_ct_helper_expectfn_unregister(&follow_master_nat); synchronize_net(); unregister_pernet_subsys(&nat_net_ops); kvfree(nf_nat_bysource); } return ret; } static void __exit nf_nat_cleanup(void) { struct nf_nat_proto_clean clean = {}; nf_ct_iterate_destroy(nf_nat_proto_clean, &clean); nf_ct_helper_expectfn_unregister(&follow_master_nat); RCU_INIT_POINTER(nf_nat_hook, NULL); synchronize_net(); kvfree(nf_nat_bysource); unregister_pernet_subsys(&nat_net_ops); } MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Network address translation core"); module_init(nf_nat_init); module_exit(nf_nat_cleanup); |
| 36 54 1034 2298 68 70 35 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 | /* SPDX-License-Identifier: GPL-2.0 */ /* * include/linux/writeback.h */ #ifndef WRITEBACK_H #define WRITEBACK_H #include <linux/sched.h> #include <linux/workqueue.h> #include <linux/fs.h> #include <linux/flex_proportions.h> #include <linux/backing-dev-defs.h> #include <linux/blk_types.h> #include <linux/folio_batch.h> struct bio; DECLARE_PER_CPU(int, dirty_throttle_leaks); /* * The global dirty threshold is normally equal to the global dirty limit, * except when the system suddenly allocates a lot of anonymous memory and * knocks down the global dirty threshold quickly, in which case the global * dirty limit will follow down slowly to prevent livelocking all dirtier tasks. */ #define DIRTY_SCOPE 8 struct backing_dev_info; /* * fs/fs-writeback.c */ enum writeback_sync_modes { WB_SYNC_NONE, /* Don't wait on anything */ WB_SYNC_ALL, /* Wait on every mapping */ }; /* * A control structure which tells the writeback code what to do. These are * always on the stack, and hence need no locking. They are always initialised * in a manner such that unspecified fields are set to zero. */ struct writeback_control { /* public fields that can be set and/or consumed by the caller: */ long nr_to_write; /* Write this many pages, and decrement this for each page written */ long pages_skipped; /* Pages which were not written */ /* * For a_ops->writepages(): if start or end are non-zero then this is * a hint that the filesystem need only write out the pages inside that * byterange. The byte at `end' is included in the writeout request. */ loff_t range_start; loff_t range_end; enum writeback_sync_modes sync_mode; unsigned for_kupdate:1; /* A kupdate writeback */ unsigned for_background:1; /* A background writeback */ unsigned tagged_writepages:1; /* tag-and-write to avoid livelock */ unsigned range_cyclic:1; /* range_start is cyclic */ unsigned for_sync:1; /* sync(2) WB_SYNC_ALL writeback */ unsigned unpinned_netfs_wb:1; /* Cleared I_PINNING_NETFS_WB */ /* * When writeback IOs are bounced through async layers, only the * initial synchronous phase should be accounted towards inode * cgroup ownership arbitration to avoid confusion. Later stages * can set the following flag to disable the accounting. */ unsigned no_cgroup_owner:1; /* internal fields used by the ->writepages implementation: */ struct folio_batch fbatch; pgoff_t index; int saved_err; #ifdef CONFIG_CGROUP_WRITEBACK struct bdi_writeback *wb; /* wb this writeback is issued under */ struct inode *inode; /* inode being written out */ /* foreign inode detection, see wbc_detach_inode() */ int wb_id; /* current wb id */ int wb_lcand_id; /* last foreign candidate wb id */ int wb_tcand_id; /* this foreign candidate wb id */ size_t wb_bytes; /* bytes written by current wb */ size_t wb_lcand_bytes; /* bytes written by last candidate */ size_t wb_tcand_bytes; /* bytes written by this candidate */ #endif }; static inline blk_opf_t wbc_to_write_flags(struct writeback_control *wbc) { blk_opf_t flags = 0; if (wbc->sync_mode == WB_SYNC_ALL) flags |= REQ_SYNC; else if (wbc->for_kupdate || wbc->for_background) flags |= REQ_BACKGROUND; return flags; } #ifdef CONFIG_CGROUP_WRITEBACK #define wbc_blkcg_css(wbc) \ ((wbc)->wb ? (wbc)->wb->blkcg_css : blkcg_root_css) #else #define wbc_blkcg_css(wbc) (blkcg_root_css) #endif /* CONFIG_CGROUP_WRITEBACK */ /* * A wb_domain represents a domain that wb's (bdi_writeback's) belong to * and are measured against each other in. There always is one global * domain, global_wb_domain, that every wb in the system is a member of. * This allows measuring the relative bandwidth of each wb to distribute * dirtyable memory accordingly. */ struct wb_domain { spinlock_t lock; /* * Scale the writeback cache size proportional to the relative * writeout speed. * * We do this by keeping a floating proportion between BDIs, based * on page writeback completions [end_page_writeback()]. Those * devices that write out pages fastest will get the larger share, * while the slower will get a smaller share. * * We use page writeout completions because we are interested in * getting rid of dirty pages. Having them written out is the * primary goal. * * We introduce a concept of time, a period over which we measure * these events, because demand can/will vary over time. The length * of this period itself is measured in page writeback completions. */ struct fprop_global completions; struct timer_list period_timer; /* timer for aging of completions */ unsigned long period_time; /* * The dirtyable memory and dirty threshold could be suddenly * knocked down by a large amount (eg. on the startup of KVM in a * swapless system). This may throw the system into deep dirty * exceeded state and throttle heavy/light dirtiers alike. To * retain good responsiveness, maintain global_dirty_limit for * tracking slowly down to the knocked down dirty threshold. * * Both fields are protected by ->lock. */ unsigned long dirty_limit_tstamp; unsigned long dirty_limit; }; /** * wb_domain_size_changed - memory available to a wb_domain has changed * @dom: wb_domain of interest * * This function should be called when the amount of memory available to * @dom has changed. It resets @dom's dirty limit parameters to prevent * the past values which don't match the current configuration from skewing * dirty throttling. Without this, when memory size of a wb_domain is * greatly reduced, the dirty throttling logic may allow too many pages to * be dirtied leading to consecutive unnecessary OOMs and may get stuck in * that situation. */ static inline void wb_domain_size_changed(struct wb_domain *dom) { spin_lock(&dom->lock); dom->dirty_limit_tstamp = jiffies; dom->dirty_limit = 0; spin_unlock(&dom->lock); } /* * fs/fs-writeback.c */ struct bdi_writeback; void writeback_inodes_sb(struct super_block *, enum wb_reason reason); void writeback_inodes_sb_nr(struct super_block *, unsigned long nr, enum wb_reason reason); void try_to_writeback_inodes_sb(struct super_block *sb, enum wb_reason reason); void sync_inodes_sb(struct super_block *); void wakeup_flusher_threads(enum wb_reason reason); void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, enum wb_reason reason); void inode_wait_for_writeback(struct inode *inode); void inode_io_list_del(struct inode *inode); static inline xa_mark_t wbc_to_tag(struct writeback_control *wbc) { if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) return PAGECACHE_TAG_TOWRITE; return PAGECACHE_TAG_DIRTY; } #ifdef CONFIG_CGROUP_WRITEBACK #include <linux/cgroup.h> #include <linux/bio.h> void __inode_attach_wb(struct inode *inode, struct folio *folio); void wbc_detach_inode(struct writeback_control *wbc); void wbc_account_cgroup_owner(struct writeback_control *wbc, struct folio *folio, size_t bytes); int cgroup_writeback_by_id(u64 bdi_id, int memcg_id, enum wb_reason reason, struct wb_completion *done); void cgroup_writeback_umount(struct super_block *sb); bool cleanup_offline_cgwb(struct bdi_writeback *wb); /** * inode_attach_wb - associate an inode with its wb * @inode: inode of interest * @folio: folio being dirtied (may be NULL) * * If @inode doesn't have its wb, associate it with the wb matching the * memcg of @folio or, if @folio is NULL, %current. May be called w/ or w/o * @inode->i_lock. */ static inline void inode_attach_wb(struct inode *inode, struct folio *folio) { if (!inode->i_wb) __inode_attach_wb(inode, folio); } /** * inode_detach_wb - disassociate an inode from its wb * @inode: inode of interest * * @inode is being freed. Detach from its wb. */ static inline void inode_detach_wb(struct inode *inode) { if (inode->i_wb) { WARN_ON_ONCE(!(inode_state_read_once(inode) & I_CLEAR)); wb_put(inode->i_wb); inode->i_wb = NULL; } } void wbc_attach_fdatawrite_inode(struct writeback_control *wbc, struct inode *inode); /** * wbc_init_bio - writeback specific initializtion of bio * @wbc: writeback_control for the writeback in progress * @bio: bio to be initialized * * @bio is a part of the writeback in progress controlled by @wbc. Perform * writeback specific initialization. This is used to apply the cgroup * writeback context. Must be called after the bio has been associated with * a device. */ static inline void wbc_init_bio(struct writeback_control *wbc, struct bio *bio) { /* * pageout() path doesn't attach @wbc to the inode being written * out. This is intentional as we don't want the function to block * behind a slow cgroup. Ultimately, we want pageout() to kick off * regular writeback instead of writing things out itself. */ if (wbc->wb) bio_associate_blkg_from_css(bio, wbc->wb->blkcg_css); } void inode_switch_wbs_work_fn(struct work_struct *work); #else /* CONFIG_CGROUP_WRITEBACK */ static inline void inode_attach_wb(struct inode *inode, struct folio *folio) { } static inline void inode_detach_wb(struct inode *inode) { } static inline void wbc_attach_fdatawrite_inode(struct writeback_control *wbc, struct inode *inode) { } static inline void wbc_detach_inode(struct writeback_control *wbc) { } static inline void wbc_init_bio(struct writeback_control *wbc, struct bio *bio) { } static inline void wbc_account_cgroup_owner(struct writeback_control *wbc, struct folio *folio, size_t bytes) { } static inline void cgroup_writeback_umount(struct super_block *sb) { } #endif /* CONFIG_CGROUP_WRITEBACK */ /* * mm/page-writeback.c */ /* consolidated parameters for balance_dirty_pages() and its subroutines */ struct dirty_throttle_control { #ifdef CONFIG_CGROUP_WRITEBACK struct wb_domain *dom; struct dirty_throttle_control *gdtc; /* only set in memcg dtc's */ #endif struct bdi_writeback *wb; struct fprop_local_percpu *wb_completions; unsigned long avail; /* dirtyable */ unsigned long dirty; /* file_dirty + write + nfs */ unsigned long thresh; /* dirty threshold */ unsigned long bg_thresh; /* dirty background threshold */ unsigned long limit; /* hard dirty limit */ unsigned long wb_dirty; /* per-wb counterparts */ unsigned long wb_thresh; unsigned long wb_bg_thresh; unsigned long pos_ratio; bool freerun; bool dirty_exceeded; }; bool node_dirty_ok(struct pglist_data *pgdat); int wb_domain_init(struct wb_domain *dom, gfp_t gfp); #ifdef CONFIG_CGROUP_WRITEBACK void wb_domain_exit(struct wb_domain *dom); #endif extern struct wb_domain global_wb_domain; /* These are exported to sysctl. */ extern unsigned int dirty_writeback_interval; extern unsigned int dirty_expire_interval; void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty); unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh); unsigned long cgwb_calc_thresh(struct bdi_writeback *wb); void wb_update_bandwidth(struct bdi_writeback *wb); /* Invoke balance dirty pages in async mode. */ #define BDP_ASYNC 0x0001 void balance_dirty_pages_ratelimited(struct address_space *mapping); int balance_dirty_pages_ratelimited_flags(struct address_space *mapping, unsigned int flags); bool wb_over_bg_thresh(struct bdi_writeback *wb); struct folio *writeback_iter(struct address_space *mapping, struct writeback_control *wbc, struct folio *folio, int *error); int do_writepages(struct address_space *mapping, struct writeback_control *wbc); void writeback_set_ratelimit(void); void tag_pages_for_writeback(struct address_space *mapping, pgoff_t start, pgoff_t end); bool filemap_dirty_folio(struct address_space *mapping, struct folio *folio); bool folio_redirty_for_writepage(struct writeback_control *, struct folio *); bool redirty_page_for_writepage(struct writeback_control *, struct page *); void sb_mark_inode_writeback(struct inode *inode); void sb_clear_inode_writeback(struct inode *inode); /* * 4MB minimal write chunk size */ #define MIN_WRITEBACK_PAGES (4096UL >> (PAGE_SHIFT - 10)) #endif /* WRITEBACK_H */ |
| 5 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Declarations of X.25 Packet Layer type objects. * * History * nov/17/96 Jonathan Naylor Initial version. * mar/20/00 Daniela Squassoni Disabling/enabling of facilities * negotiation. */ #ifndef _X25_H #define _X25_H #include <linux/x25.h> #include <linux/slab.h> #include <linux/refcount.h> #include <net/sock.h> #define X25_ADDR_LEN 16 #define X25_MAX_L2_LEN 18 /* 802.2 LLC */ #define X25_STD_MIN_LEN 3 #define X25_EXT_MIN_LEN 4 #define X25_GFI_SEQ_MASK 0x30 #define X25_GFI_STDSEQ 0x10 #define X25_GFI_EXTSEQ 0x20 #define X25_Q_BIT 0x80 #define X25_D_BIT 0x40 #define X25_STD_M_BIT 0x10 #define X25_EXT_M_BIT 0x01 #define X25_CALL_REQUEST 0x0B #define X25_CALL_ACCEPTED 0x0F #define X25_CLEAR_REQUEST 0x13 #define X25_CLEAR_CONFIRMATION 0x17 #define X25_DATA 0x00 #define X25_INTERRUPT 0x23 #define X25_INTERRUPT_CONFIRMATION 0x27 #define X25_RR 0x01 #define X25_RNR 0x05 #define X25_REJ 0x09 #define X25_RESET_REQUEST 0x1B #define X25_RESET_CONFIRMATION 0x1F #define X25_REGISTRATION_REQUEST 0xF3 #define X25_REGISTRATION_CONFIRMATION 0xF7 #define X25_RESTART_REQUEST 0xFB #define X25_RESTART_CONFIRMATION 0xFF #define X25_DIAGNOSTIC 0xF1 #define X25_ILLEGAL 0xFD /* Define the various conditions that may exist */ #define X25_COND_ACK_PENDING 0x01 #define X25_COND_OWN_RX_BUSY 0x02 #define X25_COND_PEER_RX_BUSY 0x04 /* Define Link State constants. */ enum { X25_STATE_0, /* Ready */ X25_STATE_1, /* Awaiting Call Accepted */ X25_STATE_2, /* Awaiting Clear Confirmation */ X25_STATE_3, /* Data Transfer */ X25_STATE_4, /* Awaiting Reset Confirmation */ X25_STATE_5 /* Call Accepted / Call Connected pending */ }; enum { X25_LINK_STATE_0, X25_LINK_STATE_1, X25_LINK_STATE_2, X25_LINK_STATE_3 }; #define X25_DEFAULT_T20 (180 * HZ) /* Default T20 value */ #define X25_DEFAULT_T21 (200 * HZ) /* Default T21 value */ #define X25_DEFAULT_T22 (180 * HZ) /* Default T22 value */ #define X25_DEFAULT_T23 (180 * HZ) /* Default T23 value */ #define X25_DEFAULT_T2 (3 * HZ) /* Default ack holdback value */ #define X25_DEFAULT_WINDOW_SIZE 2 /* Default Window Size */ #define X25_DEFAULT_PACKET_SIZE X25_PS128 /* Default Packet Size */ #define X25_DEFAULT_THROUGHPUT 0x0A /* Default Throughput */ #define X25_DEFAULT_REVERSE 0x00 /* Default Reverse Charging */ #define X25_SMODULUS 8 #define X25_EMODULUS 128 /* * X.25 Facilities constants. */ #define X25_FAC_CLASS_MASK 0xC0 #define X25_FAC_CLASS_A 0x00 #define X25_FAC_CLASS_B 0x40 #define X25_FAC_CLASS_C 0x80 #define X25_FAC_CLASS_D 0xC0 #define X25_FAC_REVERSE 0x01 /* also fast select */ #define X25_FAC_THROUGHPUT 0x02 #define X25_FAC_PACKET_SIZE 0x42 #define X25_FAC_WINDOW_SIZE 0x43 #define X25_MAX_FAC_LEN 60 #define X25_MAX_CUD_LEN 128 #define X25_FAC_CALLING_AE 0xCB #define X25_FAC_CALLED_AE 0xC9 #define X25_MARKER 0x00 #define X25_DTE_SERVICES 0x0F #define X25_MAX_AE_LEN 40 /* Max num of semi-octets in AE - OSI Nw */ #define X25_MAX_DTE_FACIL_LEN 21 /* Max length of DTE facility params */ /* Bitset in x25_sock->flags for misc flags */ #define X25_Q_BIT_FLAG 0 #define X25_INTERRUPT_FLAG 1 #define X25_ACCPT_APPRV_FLAG 2 /** * struct x25_route - x25 routing entry * @node - entry in x25_list_lock * @address - Start of address range * @sigdigits - Number of sig digits * @dev - More than one for MLP * @refcnt - reference counter */ struct x25_route { struct list_head node; struct x25_address address; unsigned int sigdigits; struct net_device *dev; refcount_t refcnt; }; struct x25_neigh { struct list_head node; struct net_device *dev; unsigned int state; unsigned int extended; struct sk_buff_head queue; unsigned long t20; struct timer_list t20timer; unsigned long global_facil_mask; refcount_t refcnt; }; struct x25_sock { struct sock sk; struct x25_address source_addr, dest_addr; struct x25_neigh *neighbour; unsigned int lci, cudmatchlength; unsigned char state, condition; unsigned short vs, vr, va, vl; unsigned long t2, t21, t22, t23; unsigned short fraglen; unsigned long flags; struct sk_buff_head ack_queue; struct sk_buff_head fragment_queue; struct sk_buff_head interrupt_in_queue; struct sk_buff_head interrupt_out_queue; struct timer_list timer; struct x25_causediag causediag; struct x25_facilities facilities; struct x25_dte_facilities dte_facilities; struct x25_calluserdata calluserdata; unsigned long vc_facil_mask; /* inc_call facilities mask */ }; struct x25_forward { struct list_head node; unsigned int lci; struct net_device *dev1; struct net_device *dev2; atomic_t refcnt; }; #define x25_sk(ptr) container_of_const(ptr, struct x25_sock, sk) /* af_x25.c */ extern int sysctl_x25_restart_request_timeout; extern int sysctl_x25_call_request_timeout; extern int sysctl_x25_reset_request_timeout; extern int sysctl_x25_clear_request_timeout; extern int sysctl_x25_ack_holdback_timeout; extern int sysctl_x25_forward; int x25_parse_address_block(struct sk_buff *skb, struct x25_address *called_addr, struct x25_address *calling_addr); int x25_addr_ntoa(unsigned char *, struct x25_address *, struct x25_address *); int x25_addr_aton(unsigned char *, struct x25_address *, struct x25_address *); struct sock *x25_find_socket(unsigned int, struct x25_neigh *); void x25_destroy_socket_from_timer(struct sock *); int x25_rx_call_request(struct sk_buff *, struct x25_neigh *, unsigned int); void x25_kill_by_neigh(struct x25_neigh *); /* x25_dev.c */ void x25_send_frame(struct sk_buff *, struct x25_neigh *); int x25_lapb_receive_frame(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); void x25_establish_link(struct x25_neigh *); /* x25_facilities.c */ int x25_parse_facilities(struct sk_buff *, struct x25_facilities *, struct x25_dte_facilities *, unsigned long *); int x25_create_facilities(unsigned char *, struct x25_facilities *, struct x25_dte_facilities *, unsigned long); int x25_negotiate_facilities(struct sk_buff *, struct sock *, struct x25_facilities *, struct x25_dte_facilities *); void x25_limit_facilities(struct x25_facilities *, struct x25_neigh *); /* x25_forward.c */ void x25_clear_forward_by_lci(unsigned int lci); void x25_clear_forward_by_dev(struct net_device *); int x25_forward_data(int, struct x25_neigh *, struct sk_buff *); int x25_forward_call(struct x25_address *, struct x25_neigh *, struct sk_buff *, int); /* x25_in.c */ int x25_process_rx_frame(struct sock *, struct sk_buff *); int x25_backlog_rcv(struct sock *, struct sk_buff *); /* x25_link.c */ void x25_link_control(struct sk_buff *, struct x25_neigh *, unsigned short); void x25_link_device_up(struct net_device *); void x25_link_device_down(struct net_device *); void x25_link_established(struct x25_neigh *); void x25_link_terminated(struct x25_neigh *); void x25_transmit_clear_request(struct x25_neigh *, unsigned int, unsigned char); void x25_transmit_link(struct sk_buff *, struct x25_neigh *); int x25_subscr_ioctl(unsigned int, void __user *); struct x25_neigh *x25_get_neigh(struct net_device *); void x25_link_free(void); /* x25_neigh.c */ static __inline__ void x25_neigh_hold(struct x25_neigh *nb) { refcount_inc(&nb->refcnt); } static __inline__ void x25_neigh_put(struct x25_neigh *nb) { if (refcount_dec_and_test(&nb->refcnt)) kfree(nb); } /* x25_out.c */ int x25_output(struct sock *, struct sk_buff *); void x25_kick(struct sock *); void x25_enquiry_response(struct sock *); /* x25_route.c */ struct x25_route *x25_get_route(struct x25_address *addr); struct net_device *x25_dev_get(char *); void x25_route_device_down(struct net_device *dev); int x25_route_ioctl(unsigned int, void __user *); void x25_route_free(void); static __inline__ void x25_route_hold(struct x25_route *rt) { refcount_inc(&rt->refcnt); } static __inline__ void x25_route_put(struct x25_route *rt) { if (refcount_dec_and_test(&rt->refcnt)) kfree(rt); } /* x25_subr.c */ void x25_clear_queues(struct sock *); void x25_frames_acked(struct sock *, unsigned short); void x25_requeue_frames(struct sock *); int x25_validate_nr(struct sock *, unsigned short); void x25_write_internal(struct sock *, int); int x25_decode(struct sock *, struct sk_buff *, int *, int *, int *, int *, int *); void x25_disconnect(struct sock *, int, unsigned char, unsigned char); /* x25_timer.c */ void x25_init_timers(struct sock *sk); void x25_start_heartbeat(struct sock *); void x25_start_t2timer(struct sock *); void x25_start_t21timer(struct sock *); void x25_start_t22timer(struct sock *); void x25_start_t23timer(struct sock *); void x25_stop_heartbeat(struct sock *); void x25_stop_timer(struct sock *); unsigned long x25_display_timer(struct sock *); void x25_check_rbuf(struct sock *); /* sysctl_net_x25.c */ #ifdef CONFIG_SYSCTL int x25_register_sysctl(void); void x25_unregister_sysctl(void); #else static inline int x25_register_sysctl(void) { return 0; }; static inline void x25_unregister_sysctl(void) {}; #endif /* CONFIG_SYSCTL */ struct x25_skb_cb { unsigned int flags; }; #define X25_SKB_CB(s) ((struct x25_skb_cb *) ((s)->cb)) extern struct hlist_head x25_list; extern rwlock_t x25_list_lock; extern struct list_head x25_route_list; extern rwlock_t x25_route_list_lock; extern struct list_head x25_forward_list; extern rwlock_t x25_forward_list_lock; extern struct list_head x25_neigh_list; extern rwlock_t x25_neigh_list_lock; int x25_proc_init(void); void x25_proc_exit(void); #endif |
| 39 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | /* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM icmp #if !defined(_TRACE_ICMP_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_ICMP_H #include <linux/icmp.h> #include <linux/tracepoint.h> TRACE_EVENT(icmp_send, TP_PROTO(const struct sk_buff *skb, int type, int code), TP_ARGS(skb, type, code), TP_STRUCT__entry( __field(const void *, skbaddr) __field(int, type) __field(int, code) __array(__u8, saddr, 4) __array(__u8, daddr, 4) __field(__u16, sport) __field(__u16, dport) __field(unsigned short, ulen) ), TP_fast_assign( struct iphdr *iph = ip_hdr(skb); struct udphdr *uh = udp_hdr(skb); int proto_4 = iph->protocol; __be32 *p32; __entry->skbaddr = skb; __entry->type = type; __entry->code = code; if (proto_4 != IPPROTO_UDP || (u8 *)uh < skb->head || (u8 *)uh + sizeof(struct udphdr) > skb_tail_pointer(skb)) { __entry->sport = 0; __entry->dport = 0; __entry->ulen = 0; } else { __entry->sport = ntohs(uh->source); __entry->dport = ntohs(uh->dest); __entry->ulen = ntohs(uh->len); } p32 = (__be32 *) __entry->saddr; *p32 = iph->saddr; p32 = (__be32 *) __entry->daddr; *p32 = iph->daddr; ), TP_printk("icmp_send: type=%d, code=%d. From %pI4:%u to %pI4:%u ulen=%d skbaddr=%p", __entry->type, __entry->code, __entry->saddr, __entry->sport, __entry->daddr, __entry->dport, __entry->ulen, __entry->skbaddr) ); #endif /* _TRACE_ICMP_H */ /* This part must be outside protection */ #include <trace/define_trace.h> |
| 2 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 | // SPDX-License-Identifier: GPL-2.0-only #include <linux/phy.h> #include <linux/phylib_stubs.h> #include "bitset.h" #include "common.h" #include "netlink.h" struct stats_req_info { struct ethnl_req_info base; DECLARE_BITMAP(stat_mask, __ETHTOOL_STATS_CNT); enum ethtool_mac_stats_src src; }; #define STATS_REQINFO(__req_base) \ container_of(__req_base, struct stats_req_info, base) struct stats_reply_data { struct ethnl_reply_data base; struct_group(stats, struct ethtool_eth_phy_stats phy_stats; struct ethtool_eth_mac_stats mac_stats; struct ethtool_eth_ctrl_stats ctrl_stats; struct ethtool_rmon_stats rmon_stats; struct ethtool_phy_stats phydev_stats; ); const struct ethtool_rmon_hist_range *rmon_ranges; }; #define STATS_REPDATA(__reply_base) \ container_of(__reply_base, struct stats_reply_data, base) const char stats_std_names[__ETHTOOL_STATS_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_STATS_ETH_PHY] = "eth-phy", [ETHTOOL_STATS_ETH_MAC] = "eth-mac", [ETHTOOL_STATS_ETH_CTRL] = "eth-ctrl", [ETHTOOL_STATS_RMON] = "rmon", [ETHTOOL_STATS_PHY] = "phydev", }; const char stats_eth_phy_names[__ETHTOOL_A_STATS_ETH_PHY_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR] = "SymbolErrorDuringCarrier", }; const char stats_eth_mac_names[__ETHTOOL_A_STATS_ETH_MAC_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT] = "FramesTransmittedOK", [ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL] = "SingleCollisionFrames", [ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL] = "MultipleCollisionFrames", [ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT] = "FramesReceivedOK", [ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR] = "FrameCheckSequenceErrors", [ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR] = "AlignmentErrors", [ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES] = "OctetsTransmittedOK", [ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER] = "FramesWithDeferredXmissions", [ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL] = "LateCollisions", [ETHTOOL_A_STATS_ETH_MAC_11_XS_COL] = "FramesAbortedDueToXSColls", [ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR] = "FramesLostDueToIntMACXmitError", [ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR] = "CarrierSenseErrors", [ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES] = "OctetsReceivedOK", [ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR] = "FramesLostDueToIntMACRcvError", [ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST] = "MulticastFramesXmittedOK", [ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST] = "BroadcastFramesXmittedOK", [ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER] = "FramesWithExcessiveDeferral", [ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST] = "MulticastFramesReceivedOK", [ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST] = "BroadcastFramesReceivedOK", [ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR] = "InRangeLengthErrors", [ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN] = "OutOfRangeLengthField", [ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR] = "FrameTooLongErrors", }; const char stats_eth_ctrl_names[__ETHTOOL_A_STATS_ETH_CTRL_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_A_STATS_ETH_CTRL_3_TX] = "MACControlFramesTransmitted", [ETHTOOL_A_STATS_ETH_CTRL_4_RX] = "MACControlFramesReceived", [ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP] = "UnsupportedOpcodesReceived", }; const char stats_rmon_names[__ETHTOOL_A_STATS_RMON_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_A_STATS_RMON_UNDERSIZE] = "etherStatsUndersizePkts", [ETHTOOL_A_STATS_RMON_OVERSIZE] = "etherStatsOversizePkts", [ETHTOOL_A_STATS_RMON_FRAG] = "etherStatsFragments", [ETHTOOL_A_STATS_RMON_JABBER] = "etherStatsJabbers", }; const char stats_phy_names[__ETHTOOL_A_STATS_PHY_CNT][ETH_GSTRING_LEN] = { [ETHTOOL_A_STATS_PHY_RX_PKTS] = "RxFrames", [ETHTOOL_A_STATS_PHY_RX_BYTES] = "RxOctets", [ETHTOOL_A_STATS_PHY_RX_ERRORS] = "RxErrors", [ETHTOOL_A_STATS_PHY_TX_PKTS] = "TxFrames", [ETHTOOL_A_STATS_PHY_TX_BYTES] = "TxOctets", [ETHTOOL_A_STATS_PHY_TX_ERRORS] = "TxErrors", }; const struct nla_policy ethnl_stats_get_policy[ETHTOOL_A_STATS_SRC + 1] = { [ETHTOOL_A_STATS_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), [ETHTOOL_A_STATS_GROUPS] = { .type = NLA_NESTED }, [ETHTOOL_A_STATS_SRC] = NLA_POLICY_MAX(NLA_U32, ETHTOOL_MAC_STATS_SRC_PMAC), }; static int stats_parse_request(struct ethnl_req_info *req_base, const struct genl_info *info, struct nlattr **tb, struct netlink_ext_ack *extack) { enum ethtool_mac_stats_src src = ETHTOOL_MAC_STATS_SRC_AGGREGATE; struct stats_req_info *req_info = STATS_REQINFO(req_base); bool mod = false; int err; err = ethnl_update_bitset(req_info->stat_mask, __ETHTOOL_STATS_CNT, tb[ETHTOOL_A_STATS_GROUPS], stats_std_names, extack, &mod); if (err) return err; if (!mod) { NL_SET_ERR_MSG(extack, "no stats requested"); return -EINVAL; } if (tb[ETHTOOL_A_STATS_SRC]) src = nla_get_u32(tb[ETHTOOL_A_STATS_SRC]); req_info->src = src; return 0; } static int stats_prepare_data(const struct ethnl_req_info *req_base, struct ethnl_reply_data *reply_base, const struct genl_info *info) { const struct stats_req_info *req_info = STATS_REQINFO(req_base); struct stats_reply_data *data = STATS_REPDATA(reply_base); enum ethtool_mac_stats_src src = req_info->src; struct net_device *dev = reply_base->dev; struct nlattr **tb = info->attrs; struct phy_device *phydev; int ret; phydev = ethnl_req_get_phydev(req_base, tb, ETHTOOL_A_STATS_HEADER, info->extack); if (IS_ERR(phydev)) return PTR_ERR(phydev); ret = ethnl_ops_begin(dev); if (ret < 0) return ret; if ((src == ETHTOOL_MAC_STATS_SRC_EMAC || src == ETHTOOL_MAC_STATS_SRC_PMAC) && !__ethtool_dev_mm_supported(dev)) { NL_SET_ERR_MSG_MOD(info->extack, "Device does not support MAC merge layer"); ethnl_ops_complete(dev); return -EOPNOTSUPP; } /* Mark all stats as unset (see ETHTOOL_STAT_NOT_SET) to prevent them * from being reported to user space in case driver did not set them. */ memset(&data->stats, 0xff, sizeof(data->stats)); data->phy_stats.src = src; data->mac_stats.src = src; data->ctrl_stats.src = src; data->rmon_stats.src = src; if ((test_bit(ETHTOOL_STATS_PHY, req_info->stat_mask) || test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) && src == ETHTOOL_MAC_STATS_SRC_AGGREGATE) { if (phydev) phy_ethtool_get_phy_stats(phydev, &data->phy_stats, &data->phydev_stats); } if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask) && dev->ethtool_ops->get_eth_phy_stats) dev->ethtool_ops->get_eth_phy_stats(dev, &data->phy_stats); if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask) && dev->ethtool_ops->get_eth_mac_stats) dev->ethtool_ops->get_eth_mac_stats(dev, &data->mac_stats); if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask) && dev->ethtool_ops->get_eth_ctrl_stats) dev->ethtool_ops->get_eth_ctrl_stats(dev, &data->ctrl_stats); if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask) && dev->ethtool_ops->get_rmon_stats) dev->ethtool_ops->get_rmon_stats(dev, &data->rmon_stats, &data->rmon_ranges); ethnl_ops_complete(dev); return 0; } static int stats_reply_size(const struct ethnl_req_info *req_base, const struct ethnl_reply_data *reply_base) { const struct stats_req_info *req_info = STATS_REQINFO(req_base); unsigned int n_grps = 0, n_stats = 0; int len = 0; len += nla_total_size(sizeof(u32)); /* _STATS_SRC */ if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) { n_stats += sizeof(struct ethtool_eth_phy_stats) / sizeof(u64); n_grps++; } if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask)) { n_stats += sizeof(struct ethtool_eth_mac_stats) / sizeof(u64); n_grps++; } if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask)) { n_stats += sizeof(struct ethtool_eth_ctrl_stats) / sizeof(u64); n_grps++; } if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask)) { n_stats += sizeof(struct ethtool_rmon_stats) / sizeof(u64); n_grps++; /* Above includes the space for _A_STATS_GRP_HIST_VALs */ len += (nla_total_size(0) + /* _A_STATS_GRP_HIST */ nla_total_size(4) + /* _A_STATS_GRP_HIST_BKT_LOW */ nla_total_size(4)) * /* _A_STATS_GRP_HIST_BKT_HI */ ETHTOOL_RMON_HIST_MAX * 2; } if (test_bit(ETHTOOL_STATS_PHY, req_info->stat_mask)) { n_stats += sizeof(struct ethtool_phy_stats) / sizeof(u64); n_grps++; } len += n_grps * (nla_total_size(0) + /* _A_STATS_GRP */ nla_total_size(4) + /* _A_STATS_GRP_ID */ nla_total_size(4)); /* _A_STATS_GRP_SS_ID */ len += n_stats * (nla_total_size(0) + /* _A_STATS_GRP_STAT */ nla_total_size_64bit(sizeof(u64))); return len; } static int stat_put(struct sk_buff *skb, u16 attrtype, u64 val) { struct nlattr *nest; int ret; if (val == ETHTOOL_STAT_NOT_SET) return 0; /* We want to start stats attr types from 0, so we don't have a type * for pad inside ETHTOOL_A_STATS_GRP_STAT. Pad things on the outside * of ETHTOOL_A_STATS_GRP_STAT. Since we're one nest away from the * actual attr we're 4B off - nla_need_padding_for_64bit() & co. * can't be used. */ #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS if (!IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8)) if (!nla_reserve(skb, ETHTOOL_A_STATS_GRP_PAD, 0)) return -EMSGSIZE; #endif nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP_STAT); if (!nest) return -EMSGSIZE; ret = nla_put_u64_64bit(skb, attrtype, val, -1 /* not used */); if (ret) { nla_nest_cancel(skb, nest); return ret; } nla_nest_end(skb, nest); return 0; } static int stats_put_phy_stats(struct sk_buff *skb, const struct stats_reply_data *data) { if (stat_put(skb, ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR, data->phy_stats.SymbolErrorDuringCarrier)) return -EMSGSIZE; return 0; } static int stats_put_phydev_stats(struct sk_buff *skb, const struct stats_reply_data *data) { if (stat_put(skb, ETHTOOL_A_STATS_PHY_RX_PKTS, data->phydev_stats.rx_packets) || stat_put(skb, ETHTOOL_A_STATS_PHY_RX_BYTES, data->phydev_stats.rx_bytes) || stat_put(skb, ETHTOOL_A_STATS_PHY_RX_ERRORS, data->phydev_stats.rx_errors) || stat_put(skb, ETHTOOL_A_STATS_PHY_TX_PKTS, data->phydev_stats.tx_packets) || stat_put(skb, ETHTOOL_A_STATS_PHY_TX_BYTES, data->phydev_stats.tx_bytes) || stat_put(skb, ETHTOOL_A_STATS_PHY_TX_ERRORS, data->phydev_stats.tx_errors)) return -EMSGSIZE; return 0; } static int stats_put_mac_stats(struct sk_buff *skb, const struct stats_reply_data *data) { if (stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT, data->mac_stats.FramesTransmittedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL, data->mac_stats.SingleCollisionFrames) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL, data->mac_stats.MultipleCollisionFrames) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT, data->mac_stats.FramesReceivedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR, data->mac_stats.FrameCheckSequenceErrors) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR, data->mac_stats.AlignmentErrors) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES, data->mac_stats.OctetsTransmittedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER, data->mac_stats.FramesWithDeferredXmissions) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL, data->mac_stats.LateCollisions) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_11_XS_COL, data->mac_stats.FramesAbortedDueToXSColls) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR, data->mac_stats.FramesLostDueToIntMACXmitError) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR, data->mac_stats.CarrierSenseErrors) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES, data->mac_stats.OctetsReceivedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR, data->mac_stats.FramesLostDueToIntMACRcvError) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST, data->mac_stats.MulticastFramesXmittedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST, data->mac_stats.BroadcastFramesXmittedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER, data->mac_stats.FramesWithExcessiveDeferral) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST, data->mac_stats.MulticastFramesReceivedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST, data->mac_stats.BroadcastFramesReceivedOK) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR, data->mac_stats.InRangeLengthErrors) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN, data->mac_stats.OutOfRangeLengthField) || stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR, data->mac_stats.FrameTooLongErrors)) return -EMSGSIZE; return 0; } static int stats_put_ctrl_stats(struct sk_buff *skb, const struct stats_reply_data *data) { if (stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_3_TX, data->ctrl_stats.MACControlFramesTransmitted) || stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_4_RX, data->ctrl_stats.MACControlFramesReceived) || stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP, data->ctrl_stats.UnsupportedOpcodesReceived)) return -EMSGSIZE; return 0; } static int stats_put_rmon_hist(struct sk_buff *skb, u32 attr, const u64 *hist, const struct ethtool_rmon_hist_range *ranges) { struct nlattr *nest; int i; if (!ranges) return 0; for (i = 0; i < ETHTOOL_RMON_HIST_MAX; i++) { if (!ranges[i].low && !ranges[i].high) break; if (hist[i] == ETHTOOL_STAT_NOT_SET) continue; nest = nla_nest_start(skb, attr); if (!nest) return -EMSGSIZE; if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_LOW, ranges[i].low) || nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_HI, ranges[i].high) || nla_put_u64_64bit(skb, ETHTOOL_A_STATS_GRP_HIST_VAL, hist[i], ETHTOOL_A_STATS_GRP_PAD)) goto err_cancel_hist; nla_nest_end(skb, nest); } return 0; err_cancel_hist: nla_nest_cancel(skb, nest); return -EMSGSIZE; } static int stats_put_rmon_stats(struct sk_buff *skb, const struct stats_reply_data *data) { if (stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_RX, data->rmon_stats.hist, data->rmon_ranges) || stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_TX, data->rmon_stats.hist_tx, data->rmon_ranges)) return -EMSGSIZE; if (stat_put(skb, ETHTOOL_A_STATS_RMON_UNDERSIZE, data->rmon_stats.undersize_pkts) || stat_put(skb, ETHTOOL_A_STATS_RMON_OVERSIZE, data->rmon_stats.oversize_pkts) || stat_put(skb, ETHTOOL_A_STATS_RMON_FRAG, data->rmon_stats.fragments) || stat_put(skb, ETHTOOL_A_STATS_RMON_JABBER, data->rmon_stats.jabbers)) return -EMSGSIZE; return 0; } static int stats_put_stats(struct sk_buff *skb, const struct stats_reply_data *data, u32 id, u32 ss_id, int (*cb)(struct sk_buff *skb, const struct stats_reply_data *data)) { struct nlattr *nest; nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP); if (!nest) return -EMSGSIZE; if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_ID, id) || nla_put_u32(skb, ETHTOOL_A_STATS_GRP_SS_ID, ss_id)) goto err_cancel; if (cb(skb, data)) goto err_cancel; nla_nest_end(skb, nest); return 0; err_cancel: nla_nest_cancel(skb, nest); return -EMSGSIZE; } static int stats_fill_reply(struct sk_buff *skb, const struct ethnl_req_info *req_base, const struct ethnl_reply_data *reply_base) { const struct stats_req_info *req_info = STATS_REQINFO(req_base); const struct stats_reply_data *data = STATS_REPDATA(reply_base); int ret = 0; if (nla_put_u32(skb, ETHTOOL_A_STATS_SRC, req_info->src)) return -EMSGSIZE; if (!ret && test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_PHY, ETH_SS_STATS_ETH_PHY, stats_put_phy_stats); if (!ret && test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask)) ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_MAC, ETH_SS_STATS_ETH_MAC, stats_put_mac_stats); if (!ret && test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask)) ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_CTRL, ETH_SS_STATS_ETH_CTRL, stats_put_ctrl_stats); if (!ret && test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask)) ret = stats_put_stats(skb, data, ETHTOOL_STATS_RMON, ETH_SS_STATS_RMON, stats_put_rmon_stats); if (!ret && test_bit(ETHTOOL_STATS_PHY, req_info->stat_mask)) ret = stats_put_stats(skb, data, ETHTOOL_STATS_PHY, ETH_SS_STATS_PHY, stats_put_phydev_stats); return ret; } const struct ethnl_request_ops ethnl_stats_request_ops = { .request_cmd = ETHTOOL_MSG_STATS_GET, .reply_cmd = ETHTOOL_MSG_STATS_GET_REPLY, .hdr_attr = ETHTOOL_A_STATS_HEADER, .req_info_size = sizeof(struct stats_req_info), .reply_data_size = sizeof(struct stats_reply_data), .parse_request = stats_parse_request, .prepare_data = stats_prepare_data, .reply_size = stats_reply_size, .fill_reply = stats_fill_reply, }; static u64 ethtool_stats_sum(u64 a, u64 b) { if (a == ETHTOOL_STAT_NOT_SET) return b; if (b == ETHTOOL_STAT_NOT_SET) return a; return a + b; } /* Avoid modifying the aggregation procedure every time a new counter is added * by treating the structures as an array of u64 statistics. */ static void ethtool_aggregate_stats(void *aggr_stats, const void *emac_stats, const void *pmac_stats, size_t stats_size, size_t stats_offset) { size_t num_stats = stats_size / sizeof(u64); const u64 *s1 = emac_stats + stats_offset; const u64 *s2 = pmac_stats + stats_offset; u64 *s = aggr_stats + stats_offset; int i; for (i = 0; i < num_stats; i++) s[i] = ethtool_stats_sum(s1[i], s2[i]); } void ethtool_aggregate_mac_stats(struct net_device *dev, struct ethtool_eth_mac_stats *mac_stats) { const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_eth_mac_stats pmac, emac; memset(&emac, 0xff, sizeof(emac)); memset(&pmac, 0xff, sizeof(pmac)); emac.src = ETHTOOL_MAC_STATS_SRC_EMAC; pmac.src = ETHTOOL_MAC_STATS_SRC_PMAC; ops->get_eth_mac_stats(dev, &emac); ops->get_eth_mac_stats(dev, &pmac); ethtool_aggregate_stats(mac_stats, &emac, &pmac, sizeof(mac_stats->stats), offsetof(struct ethtool_eth_mac_stats, stats)); } EXPORT_SYMBOL(ethtool_aggregate_mac_stats); void ethtool_aggregate_phy_stats(struct net_device *dev, struct ethtool_eth_phy_stats *phy_stats) { const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_eth_phy_stats pmac, emac; memset(&emac, 0xff, sizeof(emac)); memset(&pmac, 0xff, sizeof(pmac)); emac.src = ETHTOOL_MAC_STATS_SRC_EMAC; pmac.src = ETHTOOL_MAC_STATS_SRC_PMAC; ops->get_eth_phy_stats(dev, &emac); ops->get_eth_phy_stats(dev, &pmac); ethtool_aggregate_stats(phy_stats, &emac, &pmac, sizeof(phy_stats->stats), offsetof(struct ethtool_eth_phy_stats, stats)); } EXPORT_SYMBOL(ethtool_aggregate_phy_stats); void ethtool_aggregate_ctrl_stats(struct net_device *dev, struct ethtool_eth_ctrl_stats *ctrl_stats) { const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_eth_ctrl_stats pmac, emac; memset(&emac, 0xff, sizeof(emac)); memset(&pmac, 0xff, sizeof(pmac)); emac.src = ETHTOOL_MAC_STATS_SRC_EMAC; pmac.src = ETHTOOL_MAC_STATS_SRC_PMAC; ops->get_eth_ctrl_stats(dev, &emac); ops->get_eth_ctrl_stats(dev, &pmac); ethtool_aggregate_stats(ctrl_stats, &emac, &pmac, sizeof(ctrl_stats->stats), offsetof(struct ethtool_eth_ctrl_stats, stats)); } EXPORT_SYMBOL(ethtool_aggregate_ctrl_stats); void ethtool_aggregate_pause_stats(struct net_device *dev, struct ethtool_pause_stats *pause_stats) { const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_pause_stats pmac, emac; memset(&emac, 0xff, sizeof(emac)); memset(&pmac, 0xff, sizeof(pmac)); emac.src = ETHTOOL_MAC_STATS_SRC_EMAC; pmac.src = ETHTOOL_MAC_STATS_SRC_PMAC; ops->get_pause_stats(dev, &emac); ops->get_pause_stats(dev, &pmac); ethtool_aggregate_stats(pause_stats, &emac, &pmac, sizeof(pause_stats->stats), offsetof(struct ethtool_pause_stats, stats)); } EXPORT_SYMBOL(ethtool_aggregate_pause_stats); void ethtool_aggregate_rmon_stats(struct net_device *dev, struct ethtool_rmon_stats *rmon_stats) { const struct ethtool_ops *ops = dev->ethtool_ops; const struct ethtool_rmon_hist_range *dummy; struct ethtool_rmon_stats pmac, emac; memset(&emac, 0xff, sizeof(emac)); memset(&pmac, 0xff, sizeof(pmac)); emac.src = ETHTOOL_MAC_STATS_SRC_EMAC; pmac.src = ETHTOOL_MAC_STATS_SRC_PMAC; ops->get_rmon_stats(dev, &emac, &dummy); ops->get_rmon_stats(dev, &pmac, &dummy); ethtool_aggregate_stats(rmon_stats, &emac, &pmac, sizeof(rmon_stats->stats), offsetof(struct ethtool_rmon_stats, stats)); } EXPORT_SYMBOL(ethtool_aggregate_rmon_stats); |
| 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | // SPDX-License-Identifier: GPL-2.0-only /* * HID driver for some ITE "special" devices * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com> */ #include <linux/device.h> #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" #define QUIRK_TOUCHPAD_ON_OFF_REPORT BIT(0) static const __u8 *ite_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if (quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) { /* For Acer Aspire Switch 10 SW5-012 keyboard-dock */ if (*rsize == 188 && rdesc[162] == 0x81 && rdesc[163] == 0x02) { hid_info(hdev, "Fixing up Acer Sw5-012 ITE keyboard report descriptor\n"); rdesc[163] = HID_MAIN_ITEM_RELATIVE; } /* For Acer One S1002/S1003 keyboard-dock */ if (*rsize == 188 && rdesc[185] == 0x81 && rdesc[186] == 0x02) { hid_info(hdev, "Fixing up Acer S1002/S1003 ITE keyboard report descriptor\n"); rdesc[186] = HID_MAIN_ITEM_RELATIVE; } /* For Acer Aspire Switch 10E (SW3-016) keyboard-dock */ if (*rsize == 210 && rdesc[184] == 0x81 && rdesc[185] == 0x02) { hid_info(hdev, "Fixing up Acer Aspire Switch 10E (SW3-016) ITE keyboard report descriptor\n"); rdesc[185] = HID_MAIN_ITEM_RELATIVE; } } return rdesc; } static int ite_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); if ((quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) && (usage->hid & HID_USAGE_PAGE) == 0x00880000) { if (usage->hid == 0x00880078) { /* Touchpad on, userspace expects F22 for this */ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F22); return 1; } if (usage->hid == 0x00880079) { /* Touchpad off, userspace expects F23 for this */ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F23); return 1; } return -1; } return 0; } static int ite_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct input_dev *input; if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput) return 0; input = field->hidinput->input; /* * The ITE8595 always reports 0 as value for the rfkill button. Luckily * it is the only button in its report, and it sends a report on * release only, so receiving a report means the button was pressed. */ if (usage->hid == HID_GD_RFKILL_BTN) { input_event(input, EV_KEY, KEY_RFKILL, 1); input_sync(input); input_event(input, EV_KEY, KEY_RFKILL, 0); input_sync(input); return 1; } return 0; } static int ite_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; hid_set_drvdata(hdev, (void *)id->driver_data); ret = hid_open_report(hdev); if (ret) return ret; return hid_hw_start(hdev, HID_CONNECT_DEFAULT); } static const struct hid_device_id ite_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) }, { HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) }, /* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012), .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1002), .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003), .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_017), .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT }, { } }; MODULE_DEVICE_TABLE(hid, ite_devices); static struct hid_driver ite_driver = { .name = "itetech", .id_table = ite_devices, .probe = ite_probe, .report_fixup = ite_report_fixup, .input_mapping = ite_input_mapping, .event = ite_event, }; module_hid_driver(ite_driver); MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); MODULE_DESCRIPTION("HID driver for some ITE \"special\" devices"); MODULE_LICENSE("GPL"); |
| 3 3 3 4 9 14 14 14 13 14 17 3 14 7 3 1 3 5 5 5 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 | /* SPDX-License-Identifier: GPL-2.0 */ #include <linux/module.h> #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> #include <net/netfilter/nf_tables_core.h> #include <net/netfilter/nf_socket.h> #include <net/inet_sock.h> #include <net/tcp.h> struct nft_socket { enum nft_socket_keys key:8; u8 level; /* cgroupv2 level to extract */ u8 level_user; /* cgroupv2 level provided by userspace */ u8 len; union { u8 dreg; }; }; static void nft_socket_wildcard(const struct nft_pktinfo *pkt, struct nft_regs *regs, struct sock *sk, u32 *dest) { switch (nft_pf(pkt)) { case NFPROTO_IPV4: nft_reg_store8(dest, inet_sk(sk)->inet_rcv_saddr == 0); break; #if IS_ENABLED(CONFIG_NF_TABLES_IPV6) case NFPROTO_IPV6: nft_reg_store8(dest, ipv6_addr_any(&sk->sk_v6_rcv_saddr)); break; #endif default: regs->verdict.code = NFT_BREAK; return; } } #ifdef CONFIG_SOCK_CGROUP_DATA static noinline bool nft_sock_get_eval_cgroupv2(u32 *dest, struct sock *sk, const struct nft_pktinfo *pkt, u32 level) { struct cgroup *cgrp; u64 cgid; if (!sk_fullsock(sk)) return false; cgrp = cgroup_ancestor(sock_cgroup_ptr(&sk->sk_cgrp_data), level); if (!cgrp) return false; cgid = cgroup_id(cgrp); memcpy(dest, &cgid, sizeof(u64)); return true; } /* process context only, uses current->nsproxy. */ static noinline int nft_socket_cgroup_subtree_level(void) { struct cgroup *cgrp = cgroup_get_from_path("/"); int level; if (IS_ERR(cgrp)) return PTR_ERR(cgrp); level = cgrp->level; cgroup_put(cgrp); if (level > 255) return -ERANGE; if (WARN_ON_ONCE(level < 0)) return -EINVAL; return level; } #endif static struct sock *nft_socket_do_lookup(const struct nft_pktinfo *pkt) { const struct net_device *indev = nft_in(pkt); const struct sk_buff *skb = pkt->skb; struct sock *sk = NULL; if (!indev) return NULL; switch (nft_pf(pkt)) { case NFPROTO_IPV4: sk = nf_sk_lookup_slow_v4(nft_net(pkt), skb, indev); break; #if IS_ENABLED(CONFIG_NF_TABLES_IPV6) case NFPROTO_IPV6: sk = nf_sk_lookup_slow_v6(nft_net(pkt), skb, indev); break; #endif default: WARN_ON_ONCE(1); break; } return sk; } static void nft_socket_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) { const struct nft_socket *priv = nft_expr_priv(expr); struct sk_buff *skb = pkt->skb; struct sock *sk = skb->sk; u32 *dest = ®s->data[priv->dreg]; if (sk && !net_eq(nft_net(pkt), sock_net(sk))) sk = NULL; if (!sk) sk = nft_socket_do_lookup(pkt); if (!sk) { regs->verdict.code = NFT_BREAK; return; } switch(priv->key) { case NFT_SOCKET_TRANSPARENT: nft_reg_store8(dest, inet_sk_transparent(sk)); break; case NFT_SOCKET_MARK: if (sk_fullsock(sk)) { *dest = READ_ONCE(sk->sk_mark); } else { regs->verdict.code = NFT_BREAK; goto out_put_sk; } break; case NFT_SOCKET_WILDCARD: if (!sk_fullsock(sk)) { regs->verdict.code = NFT_BREAK; goto out_put_sk; } nft_socket_wildcard(pkt, regs, sk, dest); break; #ifdef CONFIG_SOCK_CGROUP_DATA case NFT_SOCKET_CGROUPV2: if (!nft_sock_get_eval_cgroupv2(dest, sk, pkt, priv->level)) { regs->verdict.code = NFT_BREAK; goto out_put_sk; } break; #endif default: WARN_ON(1); regs->verdict.code = NFT_BREAK; } out_put_sk: if (sk != skb->sk) sock_gen_put(sk); } static const struct nla_policy nft_socket_policy[NFTA_SOCKET_MAX + 1] = { [NFTA_SOCKET_KEY] = NLA_POLICY_MAX(NLA_BE32, 255), [NFTA_SOCKET_DREG] = NLA_POLICY_MAX(NLA_BE32, NFT_REG32_MAX), [NFTA_SOCKET_LEVEL] = NLA_POLICY_MAX(NLA_BE32, 255), }; static int nft_socket_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { struct nft_socket *priv = nft_expr_priv(expr); unsigned int len; if (!tb[NFTA_SOCKET_DREG] || !tb[NFTA_SOCKET_KEY]) return -EINVAL; switch(ctx->family) { case NFPROTO_IPV4: #if IS_ENABLED(CONFIG_NF_TABLES_IPV6) case NFPROTO_IPV6: #endif case NFPROTO_INET: break; default: return -EOPNOTSUPP; } priv->key = ntohl(nla_get_be32(tb[NFTA_SOCKET_KEY])); switch(priv->key) { case NFT_SOCKET_TRANSPARENT: case NFT_SOCKET_WILDCARD: len = sizeof(u8); break; case NFT_SOCKET_MARK: len = sizeof(u32); break; #ifdef CONFIG_SOCK_CGROUP_DATA case NFT_SOCKET_CGROUPV2: { unsigned int level; int err; if (!tb[NFTA_SOCKET_LEVEL]) return -EINVAL; level = ntohl(nla_get_be32(tb[NFTA_SOCKET_LEVEL])); if (level > 255) return -EOPNOTSUPP; err = nft_socket_cgroup_subtree_level(); if (err < 0) return err; priv->level_user = level; level += err; /* Implies a giant cgroup tree */ if (level > 255) return -EOPNOTSUPP; priv->level = level; len = sizeof(u64); break; } #endif default: return -EOPNOTSUPP; } priv->len = len; return nft_parse_register_store(ctx, tb[NFTA_SOCKET_DREG], &priv->dreg, NULL, NFT_DATA_VALUE, len); } static int nft_socket_dump(struct sk_buff *skb, const struct nft_expr *expr, bool reset) { const struct nft_socket *priv = nft_expr_priv(expr); if (nla_put_be32(skb, NFTA_SOCKET_KEY, htonl(priv->key))) return -1; if (nft_dump_register(skb, NFTA_SOCKET_DREG, priv->dreg)) return -1; if (priv->key == NFT_SOCKET_CGROUPV2 && nla_put_be32(skb, NFTA_SOCKET_LEVEL, htonl(priv->level_user))) return -1; return 0; } static int nft_socket_validate(const struct nft_ctx *ctx, const struct nft_expr *expr) { if (ctx->family != NFPROTO_IPV4 && ctx->family != NFPROTO_IPV6 && ctx->family != NFPROTO_INET) return -EOPNOTSUPP; return nft_chain_validate_hooks(ctx->chain, (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_LOCAL_OUT)); } static struct nft_expr_type nft_socket_type; static const struct nft_expr_ops nft_socket_ops = { .type = &nft_socket_type, .size = NFT_EXPR_SIZE(sizeof(struct nft_socket)), .eval = nft_socket_eval, .init = nft_socket_init, .dump = nft_socket_dump, .validate = nft_socket_validate, }; static struct nft_expr_type nft_socket_type __read_mostly = { .name = "socket", .ops = &nft_socket_ops, .policy = nft_socket_policy, .maxattr = NFTA_SOCKET_MAX, .owner = THIS_MODULE, }; static int __init nft_socket_module_init(void) { return nft_register_expr(&nft_socket_type); } static void __exit nft_socket_module_exit(void) { nft_unregister_expr(&nft_socket_type); } module_init(nft_socket_module_init); module_exit(nft_socket_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Máté Eckl"); MODULE_DESCRIPTION("nf_tables socket match module"); MODULE_ALIAS_NFT_EXPR("socket"); |
| 32 46 9 7 4 2 39 2 21 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 | /* SPDX-License-Identifier: GPL-2.0+ */ /* * Driver for 8250/16550-type serial ports * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * * Copyright (C) 2001 Russell King. */ #include <linux/bits.h> #include <linux/serial_8250.h> #include <linux/serial_core.h> #include <linux/dmaengine.h> #include "../serial_mctrl_gpio.h" struct uart_8250_dma { int (*tx_dma)(struct uart_8250_port *p); int (*rx_dma)(struct uart_8250_port *p); void (*prepare_tx_dma)(struct uart_8250_port *p); void (*prepare_rx_dma)(struct uart_8250_port *p); /* Filter function */ dma_filter_fn fn; /* Parameter to the filter function */ void *rx_param; void *tx_param; struct dma_slave_config rxconf; struct dma_slave_config txconf; struct dma_chan *rxchan; struct dma_chan *txchan; /* Device address base for DMA operations */ phys_addr_t rx_dma_addr; phys_addr_t tx_dma_addr; /* DMA address of the buffer in memory */ dma_addr_t rx_addr; dma_addr_t tx_addr; dma_cookie_t rx_cookie; dma_cookie_t tx_cookie; void *rx_buf; size_t rx_size; size_t tx_size; unsigned char tx_running; unsigned char tx_err; unsigned char rx_running; }; struct old_serial_port { unsigned int uart; unsigned int baud_base; unsigned int port; unsigned int irq; upf_t flags; unsigned char io_type; unsigned char __iomem *iomem_base; unsigned short iomem_reg_shift; }; struct serial8250_config { const char *name; unsigned short fifo_size; unsigned short tx_loadsz; unsigned char fcr; unsigned char rxtrig_bytes[UART_FCR_R_TRIG_MAX_STATE]; unsigned int flags; }; #define UART_CAP_FIFO BIT(8) /* UART has FIFO */ #define UART_CAP_EFR BIT(9) /* UART has EFR */ #define UART_CAP_SLEEP BIT(10) /* UART has IER sleep */ #define UART_CAP_AFE BIT(11) /* MCR-based hw flow control */ #define UART_CAP_UUE BIT(12) /* UART needs IER bit 6 set (Xscale) */ #define UART_CAP_RTOIE BIT(13) /* UART needs IER bit 4 set (Xscale, Tegra) */ #define UART_CAP_HFIFO BIT(14) /* UART has a "hidden" FIFO */ #define UART_CAP_RPM BIT(15) /* Runtime PM is active while idle */ #define UART_CAP_IRDA BIT(16) /* UART supports IrDA line discipline */ #define UART_CAP_MINI BIT(17) /* Mini UART on BCM283X family lacks: * STOP PARITY EPAR SPAR WLEN5 WLEN6 */ #define UART_CAP_NOTEMT BIT(18) /* UART without interrupt on TEMT available */ #define UART_BUG_QUOT BIT(0) /* UART has buggy quot LSB */ #define UART_BUG_TXEN BIT(1) /* UART has buggy TX IIR status */ #define UART_BUG_NOMSR BIT(2) /* UART has buggy MSR status bits (Au1x00) */ #define UART_BUG_THRE BIT(3) /* UART has buggy THRE reassertion */ #define UART_BUG_TXRACE BIT(5) /* UART Tx fails to set remote DR */ /* Module parameters */ #define UART_NR CONFIG_SERIAL_8250_NR_UARTS extern unsigned int nr_uarts; #define SERIAL8250_PORT_FLAGS(_base, _irq, _flags) \ { \ .iobase = _base, \ .irq = _irq, \ .uartclk = 1843200, \ .iotype = UPIO_PORT, \ .flags = UPF_BOOT_AUTOCONF | (_flags), \ } #define SERIAL8250_PORT(_base, _irq) SERIAL8250_PORT_FLAGS(_base, _irq, 0) extern struct uart_driver serial8250_reg; void serial8250_register_ports(struct uart_driver *drv, struct device *dev); /* Legacy ISA bus related APIs */ typedef void (*serial8250_isa_config_fn)(int, struct uart_port *, u32 *); extern serial8250_isa_config_fn serial8250_isa_config; void serial8250_isa_init_ports(void); extern struct platform_device *serial8250_isa_devs; extern const struct uart_ops *univ8250_port_base_ops; extern struct uart_ops univ8250_port_ops; static inline int serial_in(struct uart_8250_port *up, int offset) { return up->port.serial_in(&up->port, offset); } static inline void serial_out(struct uart_8250_port *up, int offset, int value) { up->port.serial_out(&up->port, offset, value); } /** * serial_lsr_in - Read LSR register and preserve flags across reads * @up: uart 8250 port * * Read LSR register and handle saving non-preserved flags across reads. * The flags that are not preserved across reads are stored into * up->lsr_saved_flags. * * Returns LSR value or'ed with the preserved flags (if any). */ static inline u16 serial_lsr_in(struct uart_8250_port *up) { u16 lsr = up->lsr_saved_flags; lsr |= serial_in(up, UART_LSR); up->lsr_saved_flags = lsr & up->lsr_save_mask; return lsr; } /* * For the 16C950 */ static void serial_icr_write(struct uart_8250_port *up, int offset, int value) { serial_out(up, UART_SCR, offset); serial_out(up, UART_ICR, value); } static unsigned int __maybe_unused serial_icr_read(struct uart_8250_port *up, int offset) { unsigned int value; serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD); serial_out(up, UART_SCR, offset); value = serial_in(up, UART_ICR); serial_icr_write(up, UART_ACR, up->acr); return value; } void serial8250_clear_fifos(struct uart_8250_port *p); void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p); void serial8250_fifo_wait_for_lsr_thre(struct uart_8250_port *up, unsigned int count); void serial8250_rpm_get(struct uart_8250_port *p); void serial8250_rpm_put(struct uart_8250_port *p); DEFINE_GUARD(serial8250_rpm, struct uart_8250_port *, serial8250_rpm_get(_T), serial8250_rpm_put(_T)); static inline u32 serial_dl_read(struct uart_8250_port *up) { return up->dl_read(up); } static inline void serial_dl_write(struct uart_8250_port *up, u32 value) { up->dl_write(up, value); } static inline bool serial8250_set_THRI(struct uart_8250_port *up) { /* Port locked to synchronize UART_IER access against the console. */ lockdep_assert_held_once(&up->port.lock); if (up->ier & UART_IER_THRI) return false; up->ier |= UART_IER_THRI; serial_out(up, UART_IER, up->ier); return true; } static inline bool serial8250_clear_THRI(struct uart_8250_port *up) { /* Port locked to synchronize UART_IER access against the console. */ lockdep_assert_held_once(&up->port.lock); if (!(up->ier & UART_IER_THRI)) return false; up->ier &= ~UART_IER_THRI; serial_out(up, UART_IER, up->ier); return true; } struct uart_8250_port *serial8250_setup_port(int index); struct uart_8250_port *serial8250_get_port(int line); int serial8250_em485_config(struct uart_port *port, struct ktermios *termios, struct serial_rs485 *rs485); void serial8250_em485_start_tx(struct uart_8250_port *p, bool toggle_ier); void serial8250_em485_stop_tx(struct uart_8250_port *p, bool toggle_ier); void serial8250_em485_destroy(struct uart_8250_port *p); extern struct serial_rs485 serial8250_em485_supported; /* MCR <-> TIOCM conversion */ static inline int serial8250_TIOCM_to_MCR(int tiocm) { int mcr = 0; if (tiocm & TIOCM_RTS) mcr |= UART_MCR_RTS; if (tiocm & TIOCM_DTR) mcr |= UART_MCR_DTR; if (tiocm & TIOCM_OUT1) mcr |= UART_MCR_OUT1; if (tiocm & TIOCM_OUT2) mcr |= UART_MCR_OUT2; if (tiocm & TIOCM_LOOP) mcr |= UART_MCR_LOOP; return mcr; } static inline int serial8250_MCR_to_TIOCM(int mcr) { int tiocm = 0; if (mcr & UART_MCR_RTS) tiocm |= TIOCM_RTS; if (mcr & UART_MCR_DTR) tiocm |= TIOCM_DTR; if (mcr & UART_MCR_OUT1) tiocm |= TIOCM_OUT1; if (mcr & UART_MCR_OUT2) tiocm |= TIOCM_OUT2; if (mcr & UART_MCR_LOOP) tiocm |= TIOCM_LOOP; return tiocm; } /* MSR <-> TIOCM conversion */ static inline int serial8250_MSR_to_TIOCM(int msr) { int tiocm = 0; if (msr & UART_MSR_DCD) tiocm |= TIOCM_CAR; if (msr & UART_MSR_RI) tiocm |= TIOCM_RNG; if (msr & UART_MSR_DSR) tiocm |= TIOCM_DSR; if (msr & UART_MSR_CTS) tiocm |= TIOCM_CTS; return tiocm; } static inline void serial8250_out_MCR(struct uart_8250_port *up, int value) { serial_out(up, UART_MCR, value); if (up->gpios) mctrl_gpio_set(up->gpios, serial8250_MCR_to_TIOCM(value)); } static inline int serial8250_in_MCR(struct uart_8250_port *up) { int mctrl; mctrl = serial_in(up, UART_MCR); if (up->gpios) { unsigned int mctrl_gpio = 0; mctrl_gpio = mctrl_gpio_get_outputs(up->gpios, &mctrl_gpio); mctrl |= serial8250_TIOCM_to_MCR(mctrl_gpio); } return mctrl; } #ifdef CONFIG_SERIAL_8250_PNP int serial8250_pnp_init(void); void serial8250_pnp_exit(void); #else static inline int serial8250_pnp_init(void) { return 0; } static inline void serial8250_pnp_exit(void) { } #endif #ifdef CONFIG_SERIAL_8250_RSA void univ8250_rsa_support(struct uart_ops *ops, const struct uart_ops *core_ops); void rsa_enable(struct uart_8250_port *up); void rsa_disable(struct uart_8250_port *up); void rsa_autoconfig(struct uart_8250_port *up); void rsa_reset(struct uart_8250_port *up); #else static inline void univ8250_rsa_support(struct uart_ops *ops, const struct uart_ops *core_ops) { } static inline void rsa_enable(struct uart_8250_port *up) {} static inline void rsa_disable(struct uart_8250_port *up) {} static inline void rsa_autoconfig(struct uart_8250_port *up) {} static inline void rsa_reset(struct uart_8250_port *up) {} #endif #ifdef CONFIG_SERIAL_8250_FINTEK int fintek_8250_probe(struct uart_8250_port *uart); #else static inline int fintek_8250_probe(struct uart_8250_port *uart) { return 0; } #endif #ifdef CONFIG_ARCH_OMAP1 #include <linux/soc/ti/omap1-soc.h> static inline int is_omap1_8250(struct uart_8250_port *pt) { int res; switch (pt->port.mapbase) { case OMAP1_UART1_BASE: case OMAP1_UART2_BASE: case OMAP1_UART3_BASE: res = 1; break; default: res = 0; break; } return res; } static inline int is_omap1510_8250(struct uart_8250_port *pt) { if (!cpu_is_omap1510()) return 0; return is_omap1_8250(pt); } #else static inline int is_omap1_8250(struct uart_8250_port *pt) { return 0; } static inline int is_omap1510_8250(struct uart_8250_port *pt) { return 0; } #endif #ifdef CONFIG_SERIAL_8250_DMA extern int serial8250_tx_dma(struct uart_8250_port *); extern void serial8250_tx_dma_flush(struct uart_8250_port *); extern int serial8250_rx_dma(struct uart_8250_port *); extern void serial8250_rx_dma_flush(struct uart_8250_port *); extern int serial8250_request_dma(struct uart_8250_port *); extern void serial8250_release_dma(struct uart_8250_port *); static inline void serial8250_do_prepare_tx_dma(struct uart_8250_port *p) { struct uart_8250_dma *dma = p->dma; if (dma->prepare_tx_dma) dma->prepare_tx_dma(p); } static inline void serial8250_do_prepare_rx_dma(struct uart_8250_port *p) { struct uart_8250_dma *dma = p->dma; if (dma->prepare_rx_dma) dma->prepare_rx_dma(p); } static inline bool serial8250_tx_dma_running(struct uart_8250_port *p) { struct uart_8250_dma *dma = p->dma; return dma && dma->tx_running; } static inline void serial8250_tx_dma_pause(struct uart_8250_port *p) { struct uart_8250_dma *dma = p->dma; if (!dma->tx_running) return; dmaengine_pause(dma->txchan); } static inline void serial8250_tx_dma_resume(struct uart_8250_port *p) { struct uart_8250_dma *dma = p->dma; if (!dma->tx_running) return; dmaengine_resume(dma->txchan); } #else static inline int serial8250_tx_dma(struct uart_8250_port *p) { return -1; } static inline void serial8250_tx_dma_flush(struct uart_8250_port *p) { } static inline int serial8250_rx_dma(struct uart_8250_port *p) { return -1; } static inline void serial8250_rx_dma_flush(struct uart_8250_port *p) { } static inline int serial8250_request_dma(struct uart_8250_port *p) { return -1; } static inline void serial8250_release_dma(struct uart_8250_port *p) { } static inline bool serial8250_tx_dma_running(struct uart_8250_port *p) { return false; } static inline void serial8250_tx_dma_pause(struct uart_8250_port *p) { } static inline void serial8250_tx_dma_resume(struct uart_8250_port *p) { } #endif static inline int ns16550a_goto_highspeed(struct uart_8250_port *up) { unsigned char status; status = serial_in(up, 0x04); /* EXCR2 */ #define PRESL(x) ((x) & 0x30) if (PRESL(status) == 0x10) { /* already in high speed mode */ return 0; } else { status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */ status |= 0x10; /* 1.625 divisor for baud_base --> 921600 */ serial_out(up, 0x04, status); } return 1; } static inline int serial_index(struct uart_port *port) { return port->minor - 64; } |
| 4 4 6 3 2 4 9 1 1 1 8 6 6 2 5 2 1 2 2 2 492 370 17 1 1 15 2 7 5 1 12 15 14 26 17 15 23 2 21 2 1 1 1 467 466 206 3 12 13 23 2 21 19 10 9 1 2 2 10 6 6 25 25 23 3 20 23 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 | // SPDX-License-Identifier: GPL-2.0 /* * memfd_create system call and file sealing support * * Code was originally included in shmem.c, and broken out to facilitate * use by hugetlbfs as well as tmpfs. */ #include <linux/fs.h> #include <linux/vfs.h> #include <linux/pagemap.h> #include <linux/file.h> #include <linux/mm.h> #include <linux/sched/signal.h> #include <linux/khugepaged.h> #include <linux/syscalls.h> #include <linux/hugetlb.h> #include <linux/shmem_fs.h> #include <linux/memfd.h> #include <linux/pid_namespace.h> #include <uapi/linux/memfd.h> #include "swap.h" /* * We need a tag: a new tag would expand every xa_node by 8 bytes, * so reuse a tag which we firmly believe is never set or cleared on tmpfs * or hugetlbfs because they are memory only filesystems. */ #define MEMFD_TAG_PINNED PAGECACHE_TAG_TOWRITE #define LAST_SCAN 4 /* about 150ms max */ static bool memfd_folio_has_extra_refs(struct folio *folio) { return folio_ref_count(folio) != folio_expected_ref_count(folio); } static void memfd_tag_pins(struct xa_state *xas) { struct folio *folio; int latency = 0; lru_add_drain(); xas_lock_irq(xas); xas_for_each(xas, folio, ULONG_MAX) { if (!xa_is_value(folio) && memfd_folio_has_extra_refs(folio)) xas_set_mark(xas, MEMFD_TAG_PINNED); if (++latency < XA_CHECK_SCHED) continue; latency = 0; xas_pause(xas); xas_unlock_irq(xas); cond_resched(); xas_lock_irq(xas); } xas_unlock_irq(xas); } /* * This is a helper function used by memfd_pin_user_pages() in GUP (gup.c). * It is mainly called to allocate a folio in a memfd when the caller * (memfd_pin_folios()) cannot find a folio in the page cache at a given * index in the mapping. */ struct folio *memfd_alloc_folio(struct file *memfd, pgoff_t idx) { #ifdef CONFIG_HUGETLB_PAGE struct folio *folio; gfp_t gfp_mask; if (is_file_hugepages(memfd)) { /* * The folio would most likely be accessed by a DMA driver, * therefore, we have zone memory constraints where we can * alloc from. Also, the folio will be pinned for an indefinite * amount of time, so it is not expected to be migrated away. */ struct inode *inode = file_inode(memfd); struct hstate *h = hstate_file(memfd); int err = -ENOMEM; long nr_resv; gfp_mask = htlb_alloc_mask(h); gfp_mask &= ~(__GFP_HIGHMEM | __GFP_MOVABLE); idx >>= huge_page_order(h); nr_resv = hugetlb_reserve_pages(inode, idx, idx + 1, NULL, EMPTY_VMA_FLAGS); if (nr_resv < 0) return ERR_PTR(nr_resv); folio = alloc_hugetlb_folio_reserve(h, numa_node_id(), NULL, gfp_mask); if (folio) { u32 hash; /* * Zero the folio to prevent information leaks to userspace. * Use folio_zero_user() which is optimized for huge/gigantic * pages. Pass 0 as addr_hint since this is not a faulting path * and we don't have a user virtual address yet. */ folio_zero_user(folio, 0); /* * Mark the folio uptodate before adding to page cache, * as required by filemap.c and other hugetlb paths. */ __folio_mark_uptodate(folio); /* * Serialize hugepage allocation and instantiation to prevent * races with concurrent allocations, as required by all other * callers of hugetlb_add_to_page_cache(). */ hash = hugetlb_fault_mutex_hash(memfd->f_mapping, idx); mutex_lock(&hugetlb_fault_mutex_table[hash]); err = hugetlb_add_to_page_cache(folio, memfd->f_mapping, idx); mutex_unlock(&hugetlb_fault_mutex_table[hash]); if (err) { folio_put(folio); goto err_unresv; } hugetlb_set_folio_subpool(folio, subpool_inode(inode)); folio_unlock(folio); return folio; } err_unresv: if (nr_resv > 0) hugetlb_unreserve_pages(inode, idx, idx + 1, 0); return ERR_PTR(err); } #endif return shmem_read_folio(memfd->f_mapping, idx); } /* * Setting SEAL_WRITE requires us to verify there's no pending writer. However, * via get_user_pages(), drivers might have some pending I/O without any active * user-space mappings (eg., direct-IO, AIO). Therefore, we look at all folios * and see whether it has an elevated ref-count. If so, we tag them and wait for * them to be dropped. * The caller must guarantee that no new user will acquire writable references * to those folios to avoid races. */ static int memfd_wait_for_pins(struct address_space *mapping) { XA_STATE(xas, &mapping->i_pages, 0); struct folio *folio; int error, scan; memfd_tag_pins(&xas); error = 0; for (scan = 0; scan <= LAST_SCAN; scan++) { int latency = 0; if (!xas_marked(&xas, MEMFD_TAG_PINNED)) break; if (!scan) lru_add_drain_all(); else if (schedule_timeout_killable((HZ << scan) / 200)) scan = LAST_SCAN; xas_set(&xas, 0); xas_lock_irq(&xas); xas_for_each_marked(&xas, folio, ULONG_MAX, MEMFD_TAG_PINNED) { bool clear = true; if (!xa_is_value(folio) && memfd_folio_has_extra_refs(folio)) { /* * On the last scan, we clean up all those tags * we inserted; but make a note that we still * found folios pinned. */ if (scan == LAST_SCAN) error = -EBUSY; else clear = false; } if (clear) xas_clear_mark(&xas, MEMFD_TAG_PINNED); if (++latency < XA_CHECK_SCHED) continue; latency = 0; xas_pause(&xas); xas_unlock_irq(&xas); cond_resched(); xas_lock_irq(&xas); } xas_unlock_irq(&xas); } return error; } static unsigned int *memfd_file_seals_ptr(struct file *file) { if (shmem_file(file)) return &SHMEM_I(file_inode(file))->seals; #ifdef CONFIG_HUGETLBFS if (is_file_hugepages(file)) return &HUGETLBFS_I(file_inode(file))->seals; #endif return NULL; } #define F_ALL_SEALS (F_SEAL_SEAL | \ F_SEAL_EXEC | \ F_SEAL_SHRINK | \ F_SEAL_GROW | \ F_SEAL_WRITE | \ F_SEAL_FUTURE_WRITE) int memfd_add_seals(struct file *file, unsigned int seals) { struct inode *inode = file_inode(file); unsigned int *file_seals; int error; /* * SEALING * Sealing allows multiple parties to share a tmpfs or hugetlbfs file * but restrict access to a specific subset of file operations. Seals * can only be added, but never removed. This way, mutually untrusted * parties can share common memory regions with a well-defined policy. * A malicious peer can thus never perform unwanted operations on a * shared object. * * Seals are only supported on special tmpfs or hugetlbfs files and * always affect the whole underlying inode. Once a seal is set, it * may prevent some kinds of access to the file. Currently, the * following seals are defined: * SEAL_SEAL: Prevent further seals from being set on this file * SEAL_SHRINK: Prevent the file from shrinking * SEAL_GROW: Prevent the file from growing * SEAL_WRITE: Prevent write access to the file * SEAL_EXEC: Prevent modification of the exec bits in the file mode * * As we don't require any trust relationship between two parties, we * must prevent seals from being removed. Therefore, sealing a file * only adds a given set of seals to the file, it never touches * existing seals. Furthermore, the "setting seals"-operation can be * sealed itself, which basically prevents any further seal from being * added. * * Semantics of sealing are only defined on volatile files. Only * anonymous tmpfs and hugetlbfs files support sealing. More * importantly, seals are never written to disk. Therefore, there's * no plan to support it on other file types. */ if (!(file->f_mode & FMODE_WRITE)) return -EPERM; if (seals & ~(unsigned int)F_ALL_SEALS) return -EINVAL; inode_lock(inode); file_seals = memfd_file_seals_ptr(file); if (!file_seals) { error = -EINVAL; goto unlock; } if (*file_seals & F_SEAL_SEAL) { error = -EPERM; goto unlock; } if ((seals & F_SEAL_WRITE) && !(*file_seals & F_SEAL_WRITE)) { error = mapping_deny_writable(file->f_mapping); if (error) goto unlock; error = memfd_wait_for_pins(file->f_mapping); if (error) { mapping_allow_writable(file->f_mapping); goto unlock; } } /* * SEAL_EXEC implies SEAL_WRITE, making W^X from the start. */ if (seals & F_SEAL_EXEC && inode->i_mode & 0111) seals |= F_SEAL_SHRINK|F_SEAL_GROW|F_SEAL_WRITE|F_SEAL_FUTURE_WRITE; *file_seals |= seals; error = 0; unlock: inode_unlock(inode); return error; } int memfd_get_seals(struct file *file) { unsigned int *seals = memfd_file_seals_ptr(file); return seals ? *seals : -EINVAL; } long memfd_fcntl(struct file *file, unsigned int cmd, unsigned int arg) { long error; switch (cmd) { case F_ADD_SEALS: error = memfd_add_seals(file, arg); break; case F_GET_SEALS: error = memfd_get_seals(file); break; default: error = -EINVAL; break; } return error; } #define MFD_NAME_PREFIX "memfd:" #define MFD_NAME_PREFIX_LEN (sizeof(MFD_NAME_PREFIX) - 1) #define MFD_NAME_MAX_LEN (NAME_MAX - MFD_NAME_PREFIX_LEN) #define MFD_ALL_FLAGS (MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_HUGETLB | MFD_NOEXEC_SEAL | MFD_EXEC) static int check_sysctl_memfd_noexec(unsigned int *flags) { #ifdef CONFIG_SYSCTL struct pid_namespace *ns = task_active_pid_ns(current); int sysctl = pidns_memfd_noexec_scope(ns); if (!(*flags & (MFD_EXEC | MFD_NOEXEC_SEAL))) { if (sysctl >= MEMFD_NOEXEC_SCOPE_NOEXEC_SEAL) *flags |= MFD_NOEXEC_SEAL; else *flags |= MFD_EXEC; } if (!(*flags & MFD_NOEXEC_SEAL) && sysctl >= MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED) { pr_err_ratelimited( "%s[%d]: memfd_create() requires MFD_NOEXEC_SEAL with vm.memfd_noexec=%d\n", current->comm, task_pid_nr(current), sysctl); return -EACCES; } #endif return 0; } static inline bool is_write_sealed(unsigned int seals) { return seals & (F_SEAL_WRITE | F_SEAL_FUTURE_WRITE); } static int check_write_seal(vm_flags_t *vm_flags_ptr) { vm_flags_t vm_flags = *vm_flags_ptr; vm_flags_t mask = vm_flags & (VM_SHARED | VM_WRITE); /* If a private mapping then writability is irrelevant. */ if (!(mask & VM_SHARED)) return 0; /* * New PROT_WRITE and MAP_SHARED mmaps are not allowed when * write seals are active. */ if (mask & VM_WRITE) return -EPERM; /* * This is a read-only mapping, disallow mprotect() from making a * write-sealed mapping writable in future. */ *vm_flags_ptr &= ~VM_MAYWRITE; return 0; } int memfd_check_seals_mmap(struct file *file, vm_flags_t *vm_flags_ptr) { int err = 0; unsigned int *seals_ptr = memfd_file_seals_ptr(file); unsigned int seals = seals_ptr ? *seals_ptr : 0; if (is_write_sealed(seals)) err = check_write_seal(vm_flags_ptr); return err; } static int sanitize_flags(unsigned int *flags_ptr) { unsigned int flags = *flags_ptr; if (!(flags & MFD_HUGETLB)) { if (flags & ~MFD_ALL_FLAGS) return -EINVAL; } else { /* Allow huge page size encoding in flags. */ if (flags & ~(MFD_ALL_FLAGS | (MFD_HUGE_MASK << MFD_HUGE_SHIFT))) return -EINVAL; } /* Invalid if both EXEC and NOEXEC_SEAL are set.*/ if ((flags & MFD_EXEC) && (flags & MFD_NOEXEC_SEAL)) return -EINVAL; return check_sysctl_memfd_noexec(flags_ptr); } static char *alloc_name(const char __user *uname) { int error; char *name; long len; name = kmalloc(NAME_MAX + 1, GFP_KERNEL); if (!name) return ERR_PTR(-ENOMEM); memcpy(name, MFD_NAME_PREFIX, MFD_NAME_PREFIX_LEN); /* returned length does not include terminating zero */ len = strncpy_from_user(&name[MFD_NAME_PREFIX_LEN], uname, MFD_NAME_MAX_LEN + 1); if (len < 0) { error = -EFAULT; goto err_name; } else if (len > MFD_NAME_MAX_LEN) { error = -EINVAL; goto err_name; } return name; err_name: kfree(name); return ERR_PTR(error); } struct file *memfd_alloc_file(const char *name, unsigned int flags) { unsigned int *file_seals; struct file *file; struct inode *inode; int err = 0; if (flags & MFD_HUGETLB) { file = hugetlb_file_setup(name, 0, mk_vma_flags(VMA_NORESERVE_BIT), HUGETLB_ANONHUGE_INODE, (flags >> MFD_HUGE_SHIFT) & MFD_HUGE_MASK); } else { file = shmem_file_setup(name, 0, mk_vma_flags(VMA_NORESERVE_BIT)); } if (IS_ERR(file)) return file; inode = file_inode(file); err = security_inode_init_security_anon(inode, &QSTR(MEMFD_ANON_NAME), NULL); if (err) { fput(file); file = ERR_PTR(err); return file; } file->f_mode |= FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE; file->f_flags |= O_LARGEFILE; if (flags & MFD_NOEXEC_SEAL) { inode->i_mode &= ~0111; file_seals = memfd_file_seals_ptr(file); if (file_seals) { *file_seals &= ~F_SEAL_SEAL; *file_seals |= F_SEAL_EXEC; } } else if (flags & MFD_ALLOW_SEALING) { /* MFD_EXEC and MFD_ALLOW_SEALING are set */ file_seals = memfd_file_seals_ptr(file); if (file_seals) *file_seals &= ~F_SEAL_SEAL; } return file; } SYSCALL_DEFINE2(memfd_create, const char __user *, uname, unsigned int, flags) { char *name __free(kfree) = NULL; unsigned int fd_flags; int error; error = sanitize_flags(&flags); if (error < 0) return error; name = alloc_name(uname); if (IS_ERR(name)) return PTR_ERR(name); fd_flags = (flags & MFD_CLOEXEC) ? O_CLOEXEC : 0; return FD_ADD(fd_flags, memfd_alloc_file(name, flags)); } |
| 1 2 1 1 4 4 1 3 3 1 2 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2008-2009 Atheros Communications Inc. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/firmware.h> #include <linux/usb.h> #include <linux/unaligned.h> #include <net/bluetooth/bluetooth.h> #define VERSION "1.0" #define ATH3K_FIRMWARE "ath3k-1.fw" #define ATH3K_DNLOAD 0x01 #define ATH3K_GETSTATE 0x05 #define ATH3K_SET_NORMAL_MODE 0x07 #define ATH3K_GETVERSION 0x09 #define USB_REG_SWITCH_VID_PID 0x0a #define ATH3K_MODE_MASK 0x3F #define ATH3K_NORMAL_MODE 0x0E #define ATH3K_PATCH_UPDATE 0x80 #define ATH3K_SYSCFG_UPDATE 0x40 #define ATH3K_XTAL_FREQ_26M 0x00 #define ATH3K_XTAL_FREQ_40M 0x01 #define ATH3K_XTAL_FREQ_19P2 0x02 #define ATH3K_NAME_LEN 0xFF struct ath3k_version { __le32 rom_version; __le32 build_version; __le32 ram_version; __u8 ref_clock; __u8 reserved[7]; } __packed; static const struct usb_device_id ath3k_table[] = { /* Atheros AR3011 */ { USB_DEVICE(0x0CF3, 0x3000) }, /* Atheros AR3011 with sflash firmware*/ { USB_DEVICE(0x0489, 0xE027) }, { USB_DEVICE(0x0489, 0xE03D) }, { USB_DEVICE(0x04F2, 0xAFF1) }, { USB_DEVICE(0x0930, 0x0215) }, { USB_DEVICE(0x0CF3, 0x3002) }, { USB_DEVICE(0x0CF3, 0xE019) }, { USB_DEVICE(0x13d3, 0x3304) }, /* Atheros AR9285 Malbec with sflash firmware */ { USB_DEVICE(0x03F0, 0x311D) }, /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0489, 0xe04d) }, { USB_DEVICE(0x0489, 0xe04e) }, { USB_DEVICE(0x0489, 0xe057) }, { USB_DEVICE(0x0489, 0xe056) }, { USB_DEVICE(0x0489, 0xe05f) }, { USB_DEVICE(0x0489, 0xe076) }, { USB_DEVICE(0x0489, 0xe078) }, { USB_DEVICE(0x0489, 0xe095) }, { USB_DEVICE(0x04c5, 0x1330) }, { USB_DEVICE(0x04CA, 0x3004) }, { USB_DEVICE(0x04CA, 0x3005) }, { USB_DEVICE(0x04CA, 0x3006) }, { USB_DEVICE(0x04CA, 0x3007) }, { USB_DEVICE(0x04CA, 0x3008) }, { USB_DEVICE(0x04CA, 0x300b) }, { USB_DEVICE(0x04CA, 0x300d) }, { USB_DEVICE(0x04CA, 0x300f) }, { USB_DEVICE(0x04CA, 0x3010) }, { USB_DEVICE(0x04CA, 0x3014) }, { USB_DEVICE(0x04CA, 0x3018) }, { USB_DEVICE(0x0930, 0x0219) }, { USB_DEVICE(0x0930, 0x021c) }, { USB_DEVICE(0x0930, 0x0220) }, { USB_DEVICE(0x0930, 0x0227) }, { USB_DEVICE(0x0b05, 0x17d0) }, { USB_DEVICE(0x0CF3, 0x0036) }, { USB_DEVICE(0x0CF3, 0x3004) }, { USB_DEVICE(0x0CF3, 0x3008) }, { USB_DEVICE(0x0CF3, 0x311D) }, { USB_DEVICE(0x0CF3, 0x311E) }, { USB_DEVICE(0x0CF3, 0x311F) }, { USB_DEVICE(0x0cf3, 0x3121) }, { USB_DEVICE(0x0CF3, 0x817a) }, { USB_DEVICE(0x0CF3, 0x817b) }, { USB_DEVICE(0x0cf3, 0xe003) }, { USB_DEVICE(0x0CF3, 0xE004) }, { USB_DEVICE(0x0CF3, 0xE005) }, { USB_DEVICE(0x0CF3, 0xE006) }, { USB_DEVICE(0x13d3, 0x3362) }, { USB_DEVICE(0x13d3, 0x3375) }, { USB_DEVICE(0x13d3, 0x3393) }, { USB_DEVICE(0x13d3, 0x3395) }, { USB_DEVICE(0x13d3, 0x3402) }, { USB_DEVICE(0x13d3, 0x3408) }, { USB_DEVICE(0x13d3, 0x3423) }, { USB_DEVICE(0x13d3, 0x3432) }, { USB_DEVICE(0x13d3, 0x3472) }, { USB_DEVICE(0x13d3, 0x3474) }, { USB_DEVICE(0x13d3, 0x3487) }, { USB_DEVICE(0x13d3, 0x3490) }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xE02C) }, /* Atheros AR5BBU22 with sflash firmware */ { USB_DEVICE(0x0489, 0xE036) }, { USB_DEVICE(0x0489, 0xE03C) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, ath3k_table); #define BTUSB_ATH3012 0x80 /* This table is to load patch and sysconfig files * for AR3012 */ static const struct usb_device_id ath3k_blist_tbl[] = { /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, /* Atheros AR5BBU22 with sflash firmware */ { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 }, { } /* Terminating entry */ }; static inline void ath3k_log_failed_loading(int err, int len, int size, int count) { BT_ERR("Firmware loading err = %d, len = %d, size = %d, count = %d", err, len, size, count); } #define USB_REQ_DFU_DNLOAD 1 #define BULK_SIZE 4096 #define FW_HDR_SIZE 20 #define TIMEGAP_USEC_MIN 50 #define TIMEGAP_USEC_MAX 100 static int ath3k_load_firmware(struct usb_device *udev, const struct firmware *firmware) { u8 *send_buf; int len = 0; int err, pipe, size, sent = 0; int count = firmware->size; BT_DBG("udev %p", udev); send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); if (!send_buf) { BT_ERR("Can't allocate memory chunk for firmware"); return -ENOMEM; } err = usb_control_msg_send(udev, 0, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR, 0, 0, firmware->data, FW_HDR_SIZE, USB_CTRL_SET_TIMEOUT, GFP_KERNEL); if (err) { BT_ERR("Can't change to loading configuration err"); goto error; } sent += FW_HDR_SIZE; count -= FW_HDR_SIZE; pipe = usb_sndbulkpipe(udev, 0x02); while (count) { /* workaround the compatibility issue with xHCI controller*/ usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX); size = min_t(uint, count, BULK_SIZE); memcpy(send_buf, firmware->data + sent, size); err = usb_bulk_msg(udev, pipe, send_buf, size, &len, 3000); if (err || len != size) { ath3k_log_failed_loading(err, len, size, count); goto error; } sent += size; count -= size; } error: kfree(send_buf); return err; } static int ath3k_get_state(struct usb_device *udev, unsigned char *state) { return usb_control_msg_recv(udev, 0, ATH3K_GETSTATE, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, state, 1, USB_CTRL_SET_TIMEOUT, GFP_KERNEL); } static int ath3k_get_version(struct usb_device *udev, struct ath3k_version *version) { return usb_control_msg_recv(udev, 0, ATH3K_GETVERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version, sizeof(*version), USB_CTRL_SET_TIMEOUT, GFP_KERNEL); } static int ath3k_load_fwfile(struct usb_device *udev, const struct firmware *firmware) { u8 *send_buf; int len = 0; int err, pipe, size, count, sent = 0; int ret; count = firmware->size; send_buf = kmalloc(BULK_SIZE, GFP_KERNEL); if (!send_buf) { BT_ERR("Can't allocate memory chunk for firmware"); return -ENOMEM; } size = min_t(uint, count, FW_HDR_SIZE); ret = usb_control_msg_send(udev, 0, ATH3K_DNLOAD, USB_TYPE_VENDOR, 0, 0, firmware->data, size, USB_CTRL_SET_TIMEOUT, GFP_KERNEL); if (ret) { BT_ERR("Can't change to loading configuration err"); kfree(send_buf); return ret; } sent += size; count -= size; pipe = usb_sndbulkpipe(udev, 0x02); while (count) { /* workaround the compatibility issue with xHCI controller*/ usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX); size = min_t(uint, count, BULK_SIZE); memcpy(send_buf, firmware->data + sent, size); err = usb_bulk_msg(udev, pipe, send_buf, size, &len, 3000); if (err || len != size) { ath3k_log_failed_loading(err, len, size, count); kfree(send_buf); return err; } sent += size; count -= size; } kfree(send_buf); return 0; } static void ath3k_switch_pid(struct usb_device *udev) { usb_control_msg_send(udev, 0, USB_REG_SWITCH_VID_PID, USB_TYPE_VENDOR, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT, GFP_KERNEL); } static int ath3k_set_normal_mode(struct usb_device *udev) { unsigned char fw_state; int ret; ret = ath3k_get_state(udev, &fw_state); if (ret) { BT_ERR("Can't get state to change to normal mode err"); return ret; } if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) { BT_DBG("firmware was already in normal mode"); return 0; } return usb_control_msg_send(udev, 0, ATH3K_SET_NORMAL_MODE, USB_TYPE_VENDOR, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT, GFP_KERNEL); } static int ath3k_load_patch(struct usb_device *udev) { unsigned char fw_state; char filename[ATH3K_NAME_LEN]; const struct firmware *firmware; struct ath3k_version fw_version; __u32 pt_rom_version, pt_build_version; int ret; ret = ath3k_get_state(udev, &fw_state); if (ret) { BT_ERR("Can't get state to change to load ram patch err"); return ret; } if (fw_state & ATH3K_PATCH_UPDATE) { BT_DBG("Patch was already downloaded"); return 0; } ret = ath3k_get_version(udev, &fw_version); if (ret) { BT_ERR("Can't get version to change to load ram patch err"); return ret; } snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu", le32_to_cpu(fw_version.rom_version)); ret = request_firmware(&firmware, filename, &udev->dev); if (ret < 0) { BT_ERR("Patch file not found %s", filename); return ret; } pt_rom_version = get_unaligned_le32(firmware->data + firmware->size - 8); pt_build_version = get_unaligned_le32(firmware->data + firmware->size - 4); if (pt_rom_version != le32_to_cpu(fw_version.rom_version) || pt_build_version <= le32_to_cpu(fw_version.build_version)) { BT_ERR("Patch file version did not match with firmware"); release_firmware(firmware); return -EINVAL; } ret = ath3k_load_fwfile(udev, firmware); release_firmware(firmware); return ret; } static int ath3k_load_syscfg(struct usb_device *udev) { unsigned char fw_state; char filename[ATH3K_NAME_LEN]; const struct firmware *firmware; struct ath3k_version fw_version; int clk_value, ret; ret = ath3k_get_state(udev, &fw_state); if (ret) { BT_ERR("Can't get state to change to load configuration err"); return -EBUSY; } ret = ath3k_get_version(udev, &fw_version); if (ret) { BT_ERR("Can't get version to change to load ram patch err"); return ret; } switch (fw_version.ref_clock) { case ATH3K_XTAL_FREQ_26M: clk_value = 26; break; case ATH3K_XTAL_FREQ_40M: clk_value = 40; break; case ATH3K_XTAL_FREQ_19P2: clk_value = 19; break; default: clk_value = 0; break; } snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s", le32_to_cpu(fw_version.rom_version), clk_value, ".dfu"); ret = request_firmware(&firmware, filename, &udev->dev); if (ret < 0) { BT_ERR("Configuration file not found %s", filename); return ret; } ret = ath3k_load_fwfile(udev, firmware); release_firmware(firmware); return ret; } static int ath3k_probe(struct usb_interface *intf, const struct usb_device_id *id) { const struct firmware *firmware; struct usb_device *udev = interface_to_usbdev(intf); int ret; BT_DBG("intf %p id %p", intf, id); if (intf->cur_altsetting->desc.bInterfaceNumber != 0) return -ENODEV; /* match device ID in ath3k blacklist table */ if (!id->driver_info) { const struct usb_device_id *match; match = usb_match_id(intf, ath3k_blist_tbl); if (match) id = match; } /* load patch and sysconfig files for AR3012 */ if (id->driver_info & BTUSB_ATH3012) { /* New firmware with patch and sysconfig files already loaded */ if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001) return -ENODEV; ret = ath3k_load_patch(udev); if (ret < 0) { BT_ERR("Loading patch file failed"); return ret; } ret = ath3k_load_syscfg(udev); if (ret < 0) { BT_ERR("Loading sysconfig file failed"); return ret; } ret = ath3k_set_normal_mode(udev); if (ret) { BT_ERR("Set normal mode failed"); return ret; } ath3k_switch_pid(udev); return 0; } ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev); if (ret < 0) { if (ret == -ENOENT) BT_ERR("Firmware file \"%s\" not found", ATH3K_FIRMWARE); else BT_ERR("Firmware file \"%s\" request failed (err=%d)", ATH3K_FIRMWARE, ret); return ret; } ret = ath3k_load_firmware(udev, firmware); release_firmware(firmware); return ret; } static void ath3k_disconnect(struct usb_interface *intf) { BT_DBG("%s intf %p", __func__, intf); } static struct usb_driver ath3k_driver = { .name = "ath3k", .probe = ath3k_probe, .disconnect = ath3k_disconnect, .id_table = ath3k_table, .disable_hub_initiated_lpm = 1, }; module_usb_driver(ath3k_driver); MODULE_AUTHOR("Atheros Communications"); MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL"); MODULE_FIRMWARE(ATH3K_FIRMWARE); |
| 3 1 4 4 1 3 2 2 2 2 2 2 1 1 1 13 2 1 1 1 6 2 4 4 4 4 2 2 2 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 | // SPDX-License-Identifier: GPL-2.0 /* * Support for async notification of waitid */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/file.h> #include <linux/compat.h> #include <linux/io_uring.h> #include <uapi/linux/io_uring.h> #include "io_uring.h" #include "cancel.h" #include "waitid.h" #include "../kernel/exit.h" static void io_waitid_cb(struct io_tw_req tw_req, io_tw_token_t tw); #define IO_WAITID_CANCEL_FLAG BIT(31) #define IO_WAITID_REF_MASK GENMASK(30, 0) struct io_waitid { struct file *file; int which; pid_t upid; int options; atomic_t refs; struct wait_queue_head *head; struct siginfo __user *infop; struct waitid_info info; }; static void io_waitid_free(struct io_kiocb *req) { struct io_waitid_async *iwa = req->async_data; put_pid(iwa->wo.wo_pid); io_req_async_data_free(req); } static bool io_waitid_compat_copy_si(struct io_waitid *iw, int signo) { struct compat_siginfo __user *infop; bool ret; infop = (struct compat_siginfo __user *) iw->infop; if (!user_write_access_begin(infop, sizeof(*infop))) return false; unsafe_put_user(signo, &infop->si_signo, Efault); unsafe_put_user(0, &infop->si_errno, Efault); unsafe_put_user(iw->info.cause, &infop->si_code, Efault); unsafe_put_user(iw->info.pid, &infop->si_pid, Efault); unsafe_put_user(iw->info.uid, &infop->si_uid, Efault); unsafe_put_user(iw->info.status, &infop->si_status, Efault); ret = true; done: user_write_access_end(); return ret; Efault: ret = false; goto done; } static bool io_waitid_copy_si(struct io_kiocb *req, int signo) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); bool ret; if (!iw->infop) return true; if (io_is_compat(req->ctx)) return io_waitid_compat_copy_si(iw, signo); if (!user_write_access_begin(iw->infop, sizeof(*iw->infop))) return false; unsafe_put_user(signo, &iw->infop->si_signo, Efault); unsafe_put_user(0, &iw->infop->si_errno, Efault); unsafe_put_user(iw->info.cause, &iw->infop->si_code, Efault); unsafe_put_user(iw->info.pid, &iw->infop->si_pid, Efault); unsafe_put_user(iw->info.uid, &iw->infop->si_uid, Efault); unsafe_put_user(iw->info.status, &iw->infop->si_status, Efault); ret = true; done: user_write_access_end(); return ret; Efault: ret = false; goto done; } static int io_waitid_finish(struct io_kiocb *req, int ret) { int signo = 0; if (ret > 0) { signo = SIGCHLD; ret = 0; } if (!io_waitid_copy_si(req, signo)) ret = -EFAULT; io_waitid_free(req); return ret; } static void io_waitid_remove_wq(struct io_kiocb *req) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); struct wait_queue_head *head; head = smp_load_acquire(&iw->head); if (head) { struct io_waitid_async *iwa = req->async_data; smp_store_release(&iw->head, NULL); spin_lock_irq(&head->lock); list_del_init(&iwa->wo.child_wait.entry); spin_unlock_irq(&head->lock); } } static void io_waitid_complete(struct io_kiocb *req, int ret) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); /* anyone completing better be holding a reference */ WARN_ON_ONCE(!(atomic_read(&iw->refs) & IO_WAITID_REF_MASK)); lockdep_assert_held(&req->ctx->uring_lock); hlist_del_init(&req->hash_node); io_waitid_remove_wq(req); ret = io_waitid_finish(req, ret); if (ret < 0) req_set_fail(req); io_req_set_res(req, ret, 0); } static bool __io_waitid_cancel(struct io_kiocb *req) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); lockdep_assert_held(&req->ctx->uring_lock); /* * Mark us canceled regardless of ownership. This will prevent a * potential retry from a spurious wakeup. */ atomic_or(IO_WAITID_CANCEL_FLAG, &iw->refs); /* claim ownership */ if (atomic_fetch_inc(&iw->refs) & IO_WAITID_REF_MASK) return false; io_waitid_complete(req, -ECANCELED); io_req_queue_tw_complete(req, -ECANCELED); return true; } int io_waitid_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd, unsigned int issue_flags) { return io_cancel_remove(ctx, cd, issue_flags, &ctx->waitid_list, __io_waitid_cancel); } bool io_waitid_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx, bool cancel_all) { return io_cancel_remove_all(ctx, tctx, &ctx->waitid_list, cancel_all, __io_waitid_cancel); } static inline bool io_waitid_drop_issue_ref(struct io_kiocb *req) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); if (!atomic_sub_return(1, &iw->refs)) return false; io_waitid_remove_wq(req); /* * Wakeup triggered, racing with us. It was prevented from * completing because of that, queue up the tw to do that. */ req->io_task_work.func = io_waitid_cb; io_req_task_work_add(req); return true; } static void io_waitid_cb(struct io_tw_req tw_req, io_tw_token_t tw) { struct io_kiocb *req = tw_req.req; struct io_waitid_async *iwa = req->async_data; struct io_ring_ctx *ctx = req->ctx; int ret; io_tw_lock(ctx, tw); ret = __do_wait(&iwa->wo); /* * If we get -ERESTARTSYS here, we need to re-arm and check again * to ensure we get another callback. If the retry works, then we can * just remove ourselves from the waitqueue again and finish the * request. */ if (unlikely(ret == -ERESTARTSYS)) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); /* Don't retry if cancel found it meanwhile */ ret = -ECANCELED; if (!(atomic_read(&iw->refs) & IO_WAITID_CANCEL_FLAG)) { iw->head = ¤t->signal->wait_chldexit; add_wait_queue(iw->head, &iwa->wo.child_wait); ret = __do_wait(&iwa->wo); if (ret == -ERESTARTSYS) { /* retry armed, drop our ref */ io_waitid_drop_issue_ref(req); return; } /* fall through to complete, will kill waitqueue */ } } io_waitid_complete(req, ret); io_req_task_complete(tw_req, tw); } static int io_waitid_wait(struct wait_queue_entry *wait, unsigned mode, int sync, void *key) { struct wait_opts *wo = container_of(wait, struct wait_opts, child_wait); struct io_waitid_async *iwa = container_of(wo, struct io_waitid_async, wo); struct io_kiocb *req = iwa->req; struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); struct task_struct *p = key; if (!pid_child_should_wake(wo, p)) return 0; list_del_init(&wait->entry); smp_store_release(&iw->head, NULL); /* cancel is in progress */ if (atomic_fetch_inc(&iw->refs) & IO_WAITID_REF_MASK) return 1; req->io_task_work.func = io_waitid_cb; io_req_task_work_add(req); return 1; } int io_waitid_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); struct io_waitid_async *iwa; if (sqe->addr || sqe->buf_index || sqe->addr3 || sqe->waitid_flags) return -EINVAL; iwa = io_uring_alloc_async_data(NULL, req); if (unlikely(!iwa)) return -ENOMEM; iwa->req = req; iw->which = READ_ONCE(sqe->len); iw->upid = READ_ONCE(sqe->fd); iw->options = READ_ONCE(sqe->file_index); iw->head = NULL; iw->infop = u64_to_user_ptr(READ_ONCE(sqe->addr2)); return 0; } int io_waitid(struct io_kiocb *req, unsigned int issue_flags) { struct io_waitid *iw = io_kiocb_to_cmd(req, struct io_waitid); struct io_waitid_async *iwa = req->async_data; struct io_ring_ctx *ctx = req->ctx; int ret; ret = kernel_waitid_prepare(&iwa->wo, iw->which, iw->upid, &iw->info, iw->options, NULL); if (ret) goto done; /* * Mark the request as busy upfront, in case we're racing with the * wakeup. If we are, then we'll notice when we drop this initial * reference again after arming. */ atomic_set(&iw->refs, 1); /* * Cancel must hold the ctx lock, so there's no risk of cancelation * finding us until a) we remain on the list, and b) the lock is * dropped. We only need to worry about racing with the wakeup * callback. */ io_ring_submit_lock(ctx, issue_flags); /* * iw->head is valid under the ring lock, and as long as the request * is on the waitid_list where cancelations may find it. */ iw->head = ¤t->signal->wait_chldexit; hlist_add_head(&req->hash_node, &ctx->waitid_list); init_waitqueue_func_entry(&iwa->wo.child_wait, io_waitid_wait); iwa->wo.child_wait.private = req->tctx->task; add_wait_queue(iw->head, &iwa->wo.child_wait); ret = __do_wait(&iwa->wo); if (ret == -ERESTARTSYS) { /* * Nobody else grabbed a reference, it'll complete when we get * a waitqueue callback, or if someone cancels it. */ if (!io_waitid_drop_issue_ref(req)) { io_ring_submit_unlock(ctx, issue_flags); return IOU_ISSUE_SKIP_COMPLETE; } /* * Wakeup triggered, racing with us. It was prevented from * completing because of that, queue up the tw to do that. */ io_ring_submit_unlock(ctx, issue_flags); return IOU_ISSUE_SKIP_COMPLETE; } hlist_del_init(&req->hash_node); io_waitid_remove_wq(req); ret = io_waitid_finish(req, ret); io_ring_submit_unlock(ctx, issue_flags); done: if (ret < 0) req_set_fail(req); io_req_set_res(req, ret, 0); return IOU_COMPLETE; } |
| 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 | // SPDX-License-Identifier: GPL-2.0-only /* * HID driver for CMedia CM6533 audio jack controls * and HS100B mute buttons * * Copyright (C) 2015 Ben Chen <ben_chen@bizlinktech.com> * Copyright (C) 2021 Thomas Weißschuh <linux@weissschuh.net> */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" MODULE_AUTHOR("Ben Chen"); MODULE_AUTHOR("Thomas Weißschuh"); MODULE_DESCRIPTION("CM6533 HID jack controls and HS100B mute button"); MODULE_LICENSE("GPL"); #define CM6533_JD_TYPE_COUNT 1 #define CM6533_JD_RAWEV_LEN 16 #define CM6533_JD_SFX_OFFSET 8 #define HS100B_RDESC_ORIG_SIZE 60 /* Fixed report descriptor of HS-100B audio chip * Bit 4 is an abolute Microphone mute usage instead of being unassigned. */ static const __u8 hs100b_rdesc_fixed[] = { 0x05, 0x0C, /* Usage Page (Consumer), */ 0x09, 0x01, /* Usage (Consumer Control), */ 0xA1, 0x01, /* Collection (Application), */ 0x15, 0x00, /* Logical Minimum (0), */ 0x25, 0x01, /* Logical Maximum (1), */ 0x09, 0xE9, /* Usage (Volume Inc), */ 0x09, 0xEA, /* Usage (Volume Dec), */ 0x75, 0x01, /* Report Size (1), */ 0x95, 0x02, /* Report Count (2), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0xE2, /* Usage (Mute), */ 0x95, 0x01, /* Report Count (1), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x05, 0x0B, /* Usage Page (Telephony), */ 0x09, 0x2F, /* Usage (2Fh), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x20, /* Usage (20h), */ 0x81, 0x06, /* Input (Variable, Relative), */ 0x05, 0x0C, /* Usage Page (Consumer), */ 0x09, 0x00, /* Usage (00h), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ 0x09, 0x00, /* Usage (00h), */ 0x75, 0x08, /* Report Size (8), */ 0x95, 0x03, /* Report Count (3), */ 0x81, 0x02, /* Input (Variable), */ 0x09, 0x00, /* Usage (00h), */ 0x95, 0x04, /* Report Count (4), */ 0x91, 0x02, /* Output (Variable), */ 0xC0 /* End Collection */ }; /* * *CM6533 audio jack HID raw events: * *Plug in: *01000600 002083xx 080008c0 10000000 *about 3 seconds later... *01000a00 002083xx 08000380 10000000 *01000600 002083xx 08000380 10000000 * *Plug out: *01000400 002083xx 080008c0 x0000000 */ static const u8 ji_sfx[] = { 0x08, 0x00, 0x08, 0xc0 }; static const u8 ji_in[] = { 0x01, 0x00, 0x06, 0x00 }; static const u8 ji_out[] = { 0x01, 0x00, 0x04, 0x00 }; static int jack_switch_types[CM6533_JD_TYPE_COUNT] = { SW_HEADPHONE_INSERT, }; struct cmhid { struct input_dev *input_dev; struct hid_device *hid; unsigned short switch_map[CM6533_JD_TYPE_COUNT]; }; static void hp_ev(struct hid_device *hid, struct cmhid *cm, int value) { input_report_switch(cm->input_dev, SW_HEADPHONE_INSERT, value); input_sync(cm->input_dev); } static int cmhid_raw_event(struct hid_device *hid, struct hid_report *report, u8 *data, int len) { struct cmhid *cm = hid_get_drvdata(hid); if (len != CM6533_JD_RAWEV_LEN || !(hid->claimed & HID_CLAIMED_INPUT)) goto out; if (memcmp(data+CM6533_JD_SFX_OFFSET, ji_sfx, sizeof(ji_sfx))) goto out; if (!memcmp(data, ji_out, sizeof(ji_out))) { hp_ev(hid, cm, 0); goto out; } if (!memcmp(data, ji_in, sizeof(ji_in))) { hp_ev(hid, cm, 1); goto out; } out: return 0; } static int cmhid_input_configured(struct hid_device *hid, struct hid_input *hidinput) { struct input_dev *input_dev = hidinput->input; struct cmhid *cm = hid_get_drvdata(hid); int i; cm->input_dev = input_dev; memcpy(cm->switch_map, jack_switch_types, sizeof(cm->switch_map)); input_dev->evbit[0] = BIT(EV_SW); for (i = 0; i < CM6533_JD_TYPE_COUNT; i++) input_set_capability(cm->input_dev, EV_SW, jack_switch_types[i]); return 0; } static int cmhid_input_mapping(struct hid_device *hid, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { return -1; } static int cmhid_probe(struct hid_device *hid, const struct hid_device_id *id) { int ret; struct cmhid *cm; cm = kzalloc_obj(struct cmhid); if (!cm) { ret = -ENOMEM; goto allocfail; } cm->hid = hid; hid->quirks |= HID_QUIRK_HIDINPUT_FORCE; hid_set_drvdata(hid, cm); ret = hid_parse(hid); if (ret) { hid_err(hid, "parse failed\n"); goto fail; } ret = hid_hw_start(hid, HID_CONNECT_DEFAULT | HID_CONNECT_HIDDEV_FORCE); if (ret) { hid_err(hid, "hw start failed\n"); goto fail; } return 0; fail: kfree(cm); allocfail: return ret; } static void cmhid_remove(struct hid_device *hid) { struct cmhid *cm = hid_get_drvdata(hid); hid_hw_stop(hid); kfree(cm); } static const struct hid_device_id cmhid_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) }, { } }; MODULE_DEVICE_TABLE(hid, cmhid_devices); static struct hid_driver cmhid_driver = { .name = "cm6533_jd", .id_table = cmhid_devices, .raw_event = cmhid_raw_event, .input_configured = cmhid_input_configured, .probe = cmhid_probe, .remove = cmhid_remove, .input_mapping = cmhid_input_mapping, }; static const __u8 *cmhid_hs100b_report_fixup(struct hid_device *hid, __u8 *rdesc, unsigned int *rsize) { if (*rsize == HS100B_RDESC_ORIG_SIZE) { hid_info(hid, "Fixing CMedia HS-100B report descriptor\n"); *rsize = sizeof(hs100b_rdesc_fixed); return hs100b_rdesc_fixed; } return rdesc; } static const struct hid_device_id cmhid_hs100b_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CMEDIA_HS100B) }, { } }; MODULE_DEVICE_TABLE(hid, cmhid_hs100b_devices); static struct hid_driver cmhid_hs100b_driver = { .name = "cmedia_hs100b", .id_table = cmhid_hs100b_devices, .report_fixup = cmhid_hs100b_report_fixup, }; static int cmedia_init(void) { int ret; ret = hid_register_driver(&cmhid_driver); if (ret) return ret; ret = hid_register_driver(&cmhid_hs100b_driver); if (ret) hid_unregister_driver(&cmhid_driver); return ret; } module_init(cmedia_init); static void cmedia_exit(void) { hid_unregister_driver(&cmhid_driver); hid_unregister_driver(&cmhid_hs100b_driver); } module_exit(cmedia_exit); |
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| // SPDX-License-Identifier: GPL-2.0-only /* * mac80211 configuration hooks for cfg80211 * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2015-2017 Intel Deutschland GmbH * Copyright (C) 2018-2026 Intel Corporation */ #include <linux/ieee80211.h> #include <linux/nl80211.h> #include <linux/rtnetlink.h> #include <linux/slab.h> #include <net/net_namespace.h> #include <linux/rcupdate.h> #include <linux/fips.h> #include <linux/if_ether.h> #include <net/cfg80211.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "rate.h" #include "mesh.h" #include "wme.h" static struct ieee80211_link_data * ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id, bool require_valid) { struct ieee80211_link_data *link; if (link_id < 0) { /* * For keys, if sdata is not an MLD, we might not use * the return value at all (if it's not a pairwise key), * so in that case (require_valid==false) don't error. */ if (require_valid && ieee80211_vif_is_mld(&sdata->vif)) return ERR_PTR(-EINVAL); return &sdata->deflink; } link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return ERR_PTR(-ENOLINK); return link; } static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata, struct vif_params *params) { bool mu_mimo_groups = false; bool mu_mimo_follow = false; if (params->vht_mumimo_groups) { u64 membership; BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN); memcpy(sdata->vif.bss_conf.mu_group.membership, params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); memcpy(sdata->vif.bss_conf.mu_group.position, params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, WLAN_USER_POSITION_LEN); /* don't care about endianness - just check for 0 */ memcpy(&membership, params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); mu_mimo_groups = membership != 0; /* Unset following if configured explicitly */ eth_broadcast_addr(sdata->u.mntr.mu_follow_addr); } if (params->vht_mumimo_follow_addr) { mu_mimo_follow = is_valid_ether_addr(params->vht_mumimo_follow_addr); ether_addr_copy(sdata->u.mntr.mu_follow_addr, params->vht_mumimo_follow_addr); /* Unset current membership until a management frame is RXed */ memset(sdata->vif.bss_conf.mu_group.membership, 0, WLAN_MEMBERSHIP_LEN); } sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow; /* Notify only after setting mu_mimo_owner */ if (sdata->vif.bss_conf.mu_mimo_owner && sdata->flags & IEEE80211_SDATA_IN_DRIVER) ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_MU_GROUPS); } static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, struct vif_params *params) { struct ieee80211_local *local = sdata->local; struct ieee80211_sub_if_data *monitor_sdata = NULL; /* check flags first */ if (params->flags && ieee80211_sdata_running(sdata)) { u32 mask = MONITOR_FLAG_ACTIVE; /* * Prohibit MONITOR_FLAG_ACTIVE to be changed * while the interface is up. * Else we would need to add a lot of cruft * to update everything: * monitor and all fif_* counters * reconfigure hardware */ if ((params->flags & mask) != (sdata->u.mntr.flags & mask)) return -EBUSY; } /* validate whether MU-MIMO can be configured */ if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR) && (params->vht_mumimo_groups || params->vht_mumimo_follow_addr)) return -EOPNOTSUPP; /* Also update dependent monitor_sdata if required */ if (test_bit(SDATA_STATE_RUNNING, &sdata->state) && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) monitor_sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); /* apply all changes now - no failures allowed */ if (ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) || ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { /* This is copied in when the VIF is activated */ ieee80211_set_mu_mimo_follow(sdata, params); if (monitor_sdata) ieee80211_set_mu_mimo_follow(monitor_sdata, params); } if (params->flags) { if (ieee80211_sdata_running(sdata)) { ieee80211_adjust_monitor_flags(sdata, -1); sdata->u.mntr.flags = params->flags; ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); } else { /* * Because the interface is down, ieee80211_do_stop * and ieee80211_do_open take care of "everything" * mentioned in the comment above. */ sdata->u.mntr.flags = params->flags; } } return 0; } static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata, struct cfg80211_mbssid_config *params, struct ieee80211_bss_conf *link_conf) { struct ieee80211_sub_if_data *tx_sdata; struct ieee80211_bss_conf *old; link_conf->bssid_index = 0; link_conf->nontransmitted = false; link_conf->ema_ap = false; link_conf->bssid_indicator = 0; if (sdata->vif.type != NL80211_IFTYPE_AP || !params->tx_wdev) return -EINVAL; old = sdata_dereference(link_conf->tx_bss_conf, sdata); if (old) return -EALREADY; tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params->tx_wdev); if (!tx_sdata) return -EINVAL; if (tx_sdata == sdata) { rcu_assign_pointer(link_conf->tx_bss_conf, link_conf); } else { struct ieee80211_bss_conf *tx_bss_conf; tx_bss_conf = sdata_dereference(tx_sdata->vif.link_conf[params->tx_link_id], sdata); if (rcu_access_pointer(tx_bss_conf->tx_bss_conf) != tx_bss_conf) return -EINVAL; rcu_assign_pointer(link_conf->tx_bss_conf, tx_bss_conf); link_conf->nontransmitted = true; link_conf->bssid_index = params->index; link_conf->bssid_indicator = tx_bss_conf->bssid_indicator; } if (params->ema) link_conf->ema_ap = true; return 0; } static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, const char *name, unsigned char name_assign_type, enum nl80211_iftype type, struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct wireless_dev *wdev; struct ieee80211_sub_if_data *sdata; int err; err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); if (err) return ERR_PTR(err); sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (type == NL80211_IFTYPE_MONITOR) { err = ieee80211_set_mon_options(sdata, params); if (err) { ieee80211_if_remove(sdata); return NULL; } } /* Let the driver know that an interface is going to be added. * Indicate so only for interface types that will be added to the * driver. */ switch (type) { case NL80211_IFTYPE_AP_VLAN: break; case NL80211_IFTYPE_MONITOR: if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) || !(params->flags & MONITOR_FLAG_ACTIVE)) break; fallthrough; default: drv_prep_add_interface(local, ieee80211_vif_type_p2p(&sdata->vif)); break; } return wdev; } static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); return 0; } static int ieee80211_change_iface(struct wiphy *wiphy, struct net_device *dev, enum nl80211_iftype type, struct vif_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret; lockdep_assert_wiphy(local->hw.wiphy); ret = ieee80211_if_change_type(sdata, type); if (ret) return ret; if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) { RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); ieee80211_check_fast_rx_iface(sdata); } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; if (params->use_4addr == ifmgd->use_4addr) return 0; sdata->u.mgd.use_4addr = params->use_4addr; if (!ifmgd->associated) return 0; sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid); if (sta) drv_sta_set_4addr(local, sdata, &sta->sta, params->use_4addr); if (params->use_4addr) ieee80211_send_4addr_nullfunc(local, sdata); } if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { ret = ieee80211_set_mon_options(sdata, params); if (ret) return ret; } return 0; } static int ieee80211_start_p2p_device(struct wiphy *wiphy, struct wireless_dev *wdev) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; lockdep_assert_wiphy(sdata->local->hw.wiphy); ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; return ieee80211_do_open(wdev, true); } static void ieee80211_stop_p2p_device(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); } static void ieee80211_nan_conf_free(struct cfg80211_nan_conf *conf) { kfree(conf->extra_nan_attrs); kfree(conf->vendor_elems); memset(conf, 0, sizeof(*conf)); } static void ieee80211_stop_nan(struct wiphy *wiphy, struct wireless_dev *wdev) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (!sdata->u.nan.started) return; drv_stop_nan(sdata->local, sdata); sdata->u.nan.started = false; ieee80211_nan_conf_free(&sdata->u.nan.conf); ieee80211_sdata_stop(sdata); ieee80211_recalc_idle(sdata->local); } static int ieee80211_nan_conf_copy(struct cfg80211_nan_conf *dst, struct cfg80211_nan_conf *src, u32 changes) { if (changes & CFG80211_NAN_CONF_CHANGED_PREF) dst->master_pref = src->master_pref; if (changes & CFG80211_NAN_CONF_CHANGED_BANDS) dst->bands = src->bands; if (changes & CFG80211_NAN_CONF_CHANGED_CONFIG) { dst->scan_period = src->scan_period; dst->scan_dwell_time = src->scan_dwell_time; dst->discovery_beacon_interval = src->discovery_beacon_interval; dst->enable_dw_notification = src->enable_dw_notification; memcpy(&dst->band_cfgs, &src->band_cfgs, sizeof(dst->band_cfgs)); kfree(dst->extra_nan_attrs); dst->extra_nan_attrs = NULL; dst->extra_nan_attrs_len = 0; kfree(dst->vendor_elems); dst->vendor_elems = NULL; dst->vendor_elems_len = 0; if (is_zero_ether_addr(dst->cluster_id)) ether_addr_copy(dst->cluster_id, src->cluster_id); if (src->extra_nan_attrs && src->extra_nan_attrs_len) { dst->extra_nan_attrs = kmemdup(src->extra_nan_attrs, src->extra_nan_attrs_len, GFP_KERNEL); if (!dst->extra_nan_attrs) goto no_mem; dst->extra_nan_attrs_len = src->extra_nan_attrs_len; } if (src->vendor_elems && src->vendor_elems_len) { dst->vendor_elems = kmemdup(src->vendor_elems, src->vendor_elems_len, GFP_KERNEL); if (!dst->vendor_elems) goto no_mem; dst->vendor_elems_len = src->vendor_elems_len; } } return 0; no_mem: ieee80211_nan_conf_free(dst); return -ENOMEM; } static int ieee80211_start_nan(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_conf *conf) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (sdata->u.nan.started) return -EALREADY; ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; ret = ieee80211_do_open(wdev, true); if (ret) return ret; ret = drv_start_nan(sdata->local, sdata, conf); if (ret) { ieee80211_sdata_stop(sdata); return ret; } sdata->u.nan.started = true; ieee80211_recalc_idle(sdata->local); ret = ieee80211_nan_conf_copy(&sdata->u.nan.conf, conf, 0xFFFFFFFF); if (ret) { ieee80211_stop_nan(wiphy, wdev); return ret; } return 0; } static int ieee80211_nan_change_conf(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_conf *conf, u32 changes) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct cfg80211_nan_conf new_conf = {}; int ret = 0; if (sdata->vif.type != NL80211_IFTYPE_NAN) return -EOPNOTSUPP; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (!changes) return 0; /* First make a full copy of the previous configuration and then apply * the changes. This might be a little wasteful, but it is simpler. */ ret = ieee80211_nan_conf_copy(&new_conf, &sdata->u.nan.conf, 0xFFFFFFFF); if (ret < 0) return ret; ret = ieee80211_nan_conf_copy(&new_conf, conf, changes); if (ret < 0) return ret; ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes); if (ret) { ieee80211_nan_conf_free(&new_conf); } else { ieee80211_nan_conf_free(&sdata->u.nan.conf); sdata->u.nan.conf = new_conf; } return ret; } static int ieee80211_add_nan_func(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_func *nan_func) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); int ret; if (sdata->vif.type != NL80211_IFTYPE_NAN) return -EOPNOTSUPP; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (WARN_ON(wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) return -EOPNOTSUPP; spin_lock_bh(&sdata->u.nan.de.func_lock); ret = idr_alloc(&sdata->u.nan.de.function_inst_ids, nan_func, 1, sdata->local->hw.max_nan_de_entries + 1, GFP_ATOMIC); spin_unlock_bh(&sdata->u.nan.de.func_lock); if (ret < 0) return ret; nan_func->instance_id = ret; WARN_ON(nan_func->instance_id == 0); ret = drv_add_nan_func(sdata->local, sdata, nan_func); if (ret) { spin_lock_bh(&sdata->u.nan.de.func_lock); idr_remove(&sdata->u.nan.de.function_inst_ids, nan_func->instance_id); spin_unlock_bh(&sdata->u.nan.de.func_lock); } return ret; } static struct cfg80211_nan_func * ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata, u64 cookie) { struct cfg80211_nan_func *func; int id; lockdep_assert_held(&sdata->u.nan.de.func_lock); idr_for_each_entry(&sdata->u.nan.de.function_inst_ids, func, id) { if (func->cookie == cookie) return func; } return NULL; } static void ieee80211_del_nan_func(struct wiphy *wiphy, struct wireless_dev *wdev, u64 cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct cfg80211_nan_func *func; u8 instance_id = 0; if (sdata->vif.type != NL80211_IFTYPE_NAN || !ieee80211_sdata_running(sdata)) return; if (WARN_ON(wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) return; spin_lock_bh(&sdata->u.nan.de.func_lock); func = ieee80211_find_nan_func_by_cookie(sdata, cookie); if (func) instance_id = func->instance_id; spin_unlock_bh(&sdata->u.nan.de.func_lock); if (instance_id) drv_del_nan_func(sdata->local, sdata, instance_id); } static int ieee80211_set_noack_map(struct wiphy *wiphy, struct net_device *dev, u16 noack_map) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->noack_map = noack_map; ieee80211_check_fast_xmit_iface(sdata); return 0; } static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata, const u8 *mac_addr, u8 key_idx) { struct ieee80211_local *local = sdata->local; struct ieee80211_key *key; struct sta_info *sta; int ret = -EINVAL; if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_EXT_KEY_ID)) return -EINVAL; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) return -EINVAL; if (sta->ptk_idx == key_idx) return 0; key = wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]); if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) ret = ieee80211_set_tx_key(key); return ret; } static int ieee80211_add_key(struct wiphy *wiphy, struct wireless_dev *wdev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, false); struct ieee80211_local *local = sdata->local; struct sta_info *sta = NULL; struct ieee80211_key *key; int err; lockdep_assert_wiphy(local->hw.wiphy); if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; if (IS_ERR(link)) return PTR_ERR(link); if (WARN_ON(pairwise && link_id >= 0)) return -EINVAL; if (pairwise && params->mode == NL80211_KEY_SET_TX) return ieee80211_set_tx(sdata, mac_addr, key_idx); /* reject WEP and TKIP keys if WEP failed to initialize */ switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_WEP104: if (link_id >= 0) return -EINVAL; if (WARN_ON_ONCE(fips_enabled)) return -EINVAL; break; default: break; } key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, params->key, params->seq_len, params->seq); if (IS_ERR(key)) return PTR_ERR(key); if (pairwise) { key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; key->conf.link_id = -1; } else { key->conf.link_id = link->link_id; } if (params->mode == NL80211_KEY_NO_TX) key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX; if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); /* * The ASSOC test makes sure the driver is ready to * receive the key. When wpa_supplicant has roamed * using FT, it attempts to set the key before * association has completed, this rejects that attempt * so it will set the key again after association. * * With (re)association frame encryption enabled, cfg80211 * may deliver keys to mac80211 before the station has * associated. In that case, accept the key if the station * is an Enhanced Privacy Protection (EPP) peer. * If (re)association frame encryption support is not present, * cfg80211 will not allow key installation in non‑AP STA mode. * * TODO: accept the key if we have a station entry and * add it to the device after the station associates. */ if (!sta || (!sta->sta.epp_peer && !test_sta_flag(sta, WLAN_STA_ASSOC))) { ieee80211_key_free_unused(key); return -ENOENT; } } switch (sdata->vif.type) { case NL80211_IFTYPE_STATION: if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_NAN: case NL80211_IFTYPE_NAN_DATA: /* Keys without a station are used for TX only */ if (sta && test_sta_flag(sta, WLAN_STA_MFP)) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; case NL80211_IFTYPE_ADHOC: /* no MFP (yet) */ break; case NL80211_IFTYPE_MESH_POINT: #ifdef CONFIG_MAC80211_MESH if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; break; #endif case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_OCB: /* shouldn't happen */ WARN_ON_ONCE(1); break; } err = ieee80211_key_link(key, link, sta); /* KRACK protection, shouldn't happen but just silently accept key */ if (err == -EALREADY) err = 0; return err; } static struct ieee80211_key * ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_local *local __maybe_unused = sdata->local; struct ieee80211_link_data *link = &sdata->deflink; struct ieee80211_key *key; if (link_id >= 0) { link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return NULL; } if (mac_addr) { struct sta_info *sta; struct link_sta_info *link_sta; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) return NULL; if (link_id >= 0) { link_sta = rcu_dereference_check(sta->link[link_id], lockdep_is_held(&local->hw.wiphy->mtx)); if (!link_sta) return NULL; } else { link_sta = &sta->deflink; } if (pairwise && key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]); if (!pairwise && key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS + NUM_DEFAULT_BEACON_KEYS) return wiphy_dereference(local->hw.wiphy, link_sta->gtk[key_idx]); return NULL; } if (pairwise && key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]); key = wiphy_dereference(local->hw.wiphy, link->gtk[key_idx]); if (key) return key; /* or maybe it was a WEP key */ if (key_idx < NUM_DEFAULT_KEYS) return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]); return NULL; } static int ieee80211_del_key(struct wiphy *wiphy, struct wireless_dev *wdev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; struct ieee80211_key *key; lockdep_assert_wiphy(local->hw.wiphy); key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr); if (!key) return -ENOENT; ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION); return 0; } static int ieee80211_get_key(struct wiphy *wiphy, struct wireless_dev *wdev, int link_id, u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie, void (*callback)(void *cookie, struct key_params *params)) { struct ieee80211_sub_if_data *sdata; u8 seq[6] = {0}; struct key_params params; struct ieee80211_key *key; u64 pn64; u32 iv32; u16 iv16; int err = -ENOENT; struct ieee80211_key_seq kseq = {}; sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); rcu_read_lock(); key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr); if (!key) goto out; memset(¶ms, 0, sizeof(params)); params.cipher = key->conf.cipher; switch (key->conf.cipher) { case WLAN_CIPHER_SUITE_TKIP: pn64 = atomic64_read(&key->conf.tx_pn); iv32 = TKIP_PN_TO_IV32(pn64); iv16 = TKIP_PN_TO_IV16(pn64); if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { drv_get_key_seq(sdata->local, key, &kseq); iv32 = kseq.tkip.iv32; iv16 = kseq.tkip.iv16; } seq[0] = iv16 & 0xff; seq[1] = (iv16 >> 8) & 0xff; seq[2] = iv32 & 0xff; seq[3] = (iv32 >> 8) & 0xff; seq[4] = (iv32 >> 16) & 0xff; seq[5] = (iv32 >> 24) & 0xff; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_CCMP: case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_AES_CMAC: case WLAN_CIPHER_SUITE_BIP_CMAC_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), aes_cmac)); fallthrough; case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), aes_gmac)); fallthrough; case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != offsetof(typeof(kseq), gcmp)); if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { drv_get_key_seq(sdata->local, key, &kseq); memcpy(seq, kseq.ccmp.pn, 6); } else { pn64 = atomic64_read(&key->conf.tx_pn); seq[0] = pn64; seq[1] = pn64 >> 8; seq[2] = pn64 >> 16; seq[3] = pn64 >> 24; seq[4] = pn64 >> 32; seq[5] = pn64 >> 40; } params.seq = seq; params.seq_len = 6; break; default: if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) break; if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) break; drv_get_key_seq(sdata->local, key, &kseq); params.seq = kseq.hw.seq; params.seq_len = kseq.hw.seq_len; break; } callback(cookie, ¶ms); err = 0; out: rcu_read_unlock(); return err; } static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, int link_id, u8 key_idx, bool uni, bool multi) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, false); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_key(link, key_idx, uni, multi); return 0; } static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, struct wireless_dev *wdev, int link_id, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, true); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_mgmt_key(link, key_idx); return 0; } static int ieee80211_config_default_beacon_key(struct wiphy *wiphy, struct wireless_dev *wdev, int link_id, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, link_id, true); if (IS_ERR(link)) return PTR_ERR(link); ieee80211_set_default_beacon_key(link, key_idx); return 0; } void sta_set_rate_info_tx(struct sta_info *sta, const struct ieee80211_tx_rate *rate, struct rate_info *rinfo) { rinfo->flags = 0; if (rate->flags & IEEE80211_TX_RC_MCS) { rinfo->flags |= RATE_INFO_FLAGS_MCS; rinfo->mcs = rate->idx; } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); rinfo->nss = ieee80211_rate_get_vht_nss(rate); } else { struct ieee80211_supported_band *sband; sband = ieee80211_get_sband(sta->sdata); WARN_ON_ONCE(sband && !sband->bitrates); if (sband && sband->bitrates) rinfo->legacy = sband->bitrates[rate->idx].bitrate; } if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_40; else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_80; else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) rinfo->bw = RATE_INFO_BW_160; else rinfo->bw = RATE_INFO_BW_20; if (rate->flags & IEEE80211_TX_RC_SHORT_GI) rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; } static int ieee80211_dump_station(struct wiphy *wiphy, struct wireless_dev *wdev, int idx, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_by_idx(sdata, idx); if (sta) { ret = 0; memcpy(mac, sta->sta.addr, ETH_ALEN); sta_set_sinfo(sta, sinfo, true); /* Add accumulated removed link data to sinfo data for * consistency for MLO */ if (sinfo->valid_links) sta_set_accumulated_removed_links_sinfo(sta, sinfo); } return ret; } static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, int idx, struct survey_info *survey) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); return drv_get_survey(local, idx, survey); } static int ieee80211_get_station(struct wiphy *wiphy, struct wireless_dev *wdev, const u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = sdata->local; struct sta_info *sta; int ret = -ENOENT; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, mac); if (sta) { ret = 0; sta_set_sinfo(sta, sinfo, true); /* Add accumulated removed link data to sinfo data for * consistency for MLO */ if (sinfo->valid_links) sta_set_accumulated_removed_links_sinfo(sta, sinfo); } return ret; } static int ieee80211_set_monitor_channel(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_chan_def *chandef) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; struct ieee80211_chan_req chanreq = { .oper = *chandef }; int ret; lockdep_assert_wiphy(local->hw.wiphy); sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { if (cfg80211_chandef_identical(&local->monitor_chanreq.oper, &chanreq.oper)) return 0; sdata = wiphy_dereference(wiphy, local->monitor_sdata); if (!sdata) goto done; } if (rcu_access_pointer(sdata->deflink.conf->chanctx_conf) && cfg80211_chandef_identical(&sdata->vif.bss_conf.chanreq.oper, &chanreq.oper)) return 0; ieee80211_link_release_channel(&sdata->deflink); ret = ieee80211_link_use_channel(&sdata->deflink, &chanreq, IEEE80211_CHANCTX_SHARED); if (ret) return ret; done: local->monitor_chanreq = chanreq; return 0; } static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, const u8 *resp, size_t resp_len, const struct ieee80211_csa_settings *csa, const struct ieee80211_color_change_settings *cca, struct ieee80211_link_data *link) { struct probe_resp *new, *old; if (!resp || !resp_len) return 1; old = sdata_dereference(link->u.ap.probe_resp, sdata); new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = resp_len; memcpy(new->data, resp, resp_len); if (csa) memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp, csa->n_counter_offsets_presp * sizeof(new->cntdwn_counter_offsets[0])); else if (cca) new->cntdwn_counter_offsets[0] = cca->counter_offset_presp; rcu_assign_pointer(link->u.ap.probe_resp, new); if (old) kfree_rcu(old, rcu_head); return 0; } static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata, struct cfg80211_fils_discovery *params, struct ieee80211_link_data *link, struct ieee80211_bss_conf *link_conf, u64 *changed) { struct fils_discovery_data *new, *old = NULL; struct ieee80211_fils_discovery *fd; if (!params->update) return 0; fd = &link_conf->fils_discovery; fd->min_interval = params->min_interval; fd->max_interval = params->max_interval; old = sdata_dereference(link->u.ap.fils_discovery, sdata); if (old) kfree_rcu(old, rcu_head); if (params->tmpl && params->tmpl_len) { new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = params->tmpl_len; memcpy(new->data, params->tmpl, params->tmpl_len); rcu_assign_pointer(link->u.ap.fils_discovery, new); } else { RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL); } *changed |= BSS_CHANGED_FILS_DISCOVERY; return 0; } static int ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata, struct cfg80211_unsol_bcast_probe_resp *params, struct ieee80211_link_data *link, struct ieee80211_bss_conf *link_conf, u64 *changed) { struct unsol_bcast_probe_resp_data *new, *old = NULL; if (!params->update) return 0; link_conf->unsol_bcast_probe_resp_interval = params->interval; old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata); if (old) kfree_rcu(old, rcu_head); if (params->tmpl && params->tmpl_len) { new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); if (!new) return -ENOMEM; new->len = params->tmpl_len; memcpy(new->data, params->tmpl, params->tmpl_len); rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new); } else { RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL); } *changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP; return 0; } static int ieee80211_set_s1g_short_beacon(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, struct cfg80211_s1g_short_beacon *params) { struct s1g_short_beacon_data *new; struct s1g_short_beacon_data *old = sdata_dereference(link->u.ap.s1g_short_beacon, sdata); size_t new_len = sizeof(*new) + params->short_head_len + params->short_tail_len; if (!params->update) return 0; if (!params->short_head) return -EINVAL; new = kzalloc(new_len, GFP_KERNEL); if (!new) return -ENOMEM; /* Memory layout: | struct | head | tail | */ new->short_head = (u8 *)new + sizeof(*new); new->short_head_len = params->short_head_len; memcpy(new->short_head, params->short_head, params->short_head_len); if (params->short_tail) { new->short_tail = new->short_head + params->short_head_len; new->short_tail_len = params->short_tail_len; memcpy(new->short_tail, params->short_tail, params->short_tail_len); } rcu_assign_pointer(link->u.ap.s1g_short_beacon, new); if (old) kfree_rcu(old, rcu_head); return 0; } static int ieee80211_set_ftm_responder_params( struct ieee80211_sub_if_data *sdata, const u8 *lci, size_t lci_len, const u8 *civicloc, size_t civicloc_len, struct ieee80211_bss_conf *link_conf) { struct ieee80211_ftm_responder_params *new, *old; u8 *pos; int len; if (!lci_len && !civicloc_len) return 0; old = link_conf->ftmr_params; len = lci_len + civicloc_len; new = kzalloc(sizeof(*new) + len, GFP_KERNEL); if (!new) return -ENOMEM; pos = (u8 *)(new + 1); if (lci_len) { new->lci_len = lci_len; new->lci = pos; memcpy(pos, lci, lci_len); pos += lci_len; } if (civicloc_len) { new->civicloc_len = civicloc_len; new->civicloc = pos; memcpy(pos, civicloc, civicloc_len); pos += civicloc_len; } link_conf->ftmr_params = new; kfree(old); return 0; } static int ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst, struct cfg80211_mbssid_elems *src) { int i, offset = 0; dst->cnt = src->cnt; for (i = 0; i < src->cnt; i++) { memcpy(pos + offset, src->elem[i].data, src->elem[i].len); dst->elem[i].len = src->elem[i].len; dst->elem[i].data = pos + offset; offset += dst->elem[i].len; } return offset; } static int ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst, struct cfg80211_rnr_elems *src) { int i, offset = 0; dst->cnt = src->cnt; for (i = 0; i < src->cnt; i++) { memcpy(pos + offset, src->elem[i].data, src->elem[i].len); dst->elem[i].len = src->elem[i].len; dst->elem[i].data = pos + offset; offset += dst->elem[i].len; } return offset; } static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, struct cfg80211_beacon_data *params, const struct ieee80211_csa_settings *csa, const struct ieee80211_color_change_settings *cca, u64 *changed) { struct cfg80211_mbssid_elems *mbssid = NULL; struct cfg80211_rnr_elems *rnr = NULL; struct beacon_data *new, *old; int new_head_len, new_tail_len; int size, err; u64 _changed = BSS_CHANGED_BEACON; struct ieee80211_bss_conf *link_conf = link->conf; old = sdata_dereference(link->u.ap.beacon, sdata); /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) return -EINVAL; /* new or old head? */ if (params->head) new_head_len = params->head_len; else new_head_len = old->head_len; /* new or old tail? */ if (params->tail || !old) /* params->tail_len will be zero for !params->tail */ new_tail_len = params->tail_len; else new_tail_len = old->tail_len; size = sizeof(*new) + new_head_len + new_tail_len; if (params->mbssid_ies) { mbssid = params->mbssid_ies; size += struct_size(new->mbssid_ies, elem, mbssid->cnt); if (params->rnr_ies) { rnr = params->rnr_ies; size += struct_size(new->rnr_ies, elem, rnr->cnt); } size += ieee80211_get_mbssid_beacon_len(mbssid, rnr, mbssid->cnt); } new = kzalloc(size, GFP_KERNEL); if (!new) return -ENOMEM; /* start filling the new info now */ /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies */ new->head = ((u8 *) new) + sizeof(*new); new->tail = new->head + new_head_len; new->head_len = new_head_len; new->tail_len = new_tail_len; /* copy in optional mbssid_ies */ if (mbssid) { u8 *pos = new->tail + new->tail_len; new->mbssid_ies = (void *)pos; pos += struct_size(new->mbssid_ies, elem, mbssid->cnt); pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid); if (rnr) { new->rnr_ies = (void *)pos; pos += struct_size(new->rnr_ies, elem, rnr->cnt); ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr); } /* update bssid_indicator */ if (new->mbssid_ies->cnt && new->mbssid_ies->elem[0].len > 2) link_conf->bssid_indicator = *(new->mbssid_ies->elem[0].data + 2); else link_conf->bssid_indicator = 0; } if (csa) { new->cntdwn_current_counter = csa->count; memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon, csa->n_counter_offsets_beacon * sizeof(new->cntdwn_counter_offsets[0])); } else if (cca) { new->cntdwn_current_counter = cca->count; new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon; } /* copy in head */ if (params->head) memcpy(new->head, params->head, new_head_len); else memcpy(new->head, old->head, new_head_len); /* copy in optional tail */ if (params->tail) memcpy(new->tail, params->tail, new_tail_len); else if (old) memcpy(new->tail, old->tail, new_tail_len); err = ieee80211_set_probe_resp(sdata, params->probe_resp, params->probe_resp_len, csa, cca, link); if (err < 0) { kfree(new); return err; } if (err == 0) _changed |= BSS_CHANGED_AP_PROBE_RESP; if (params->ftm_responder != -1) { link_conf->ftm_responder = params->ftm_responder; err = ieee80211_set_ftm_responder_params(sdata, params->lci, params->lci_len, params->civicloc, params->civicloc_len, link_conf); if (err < 0) { kfree(new); return err; } _changed |= BSS_CHANGED_FTM_RESPONDER; } rcu_assign_pointer(link->u.ap.beacon, new); sdata->u.ap.active = true; if (old) kfree_rcu(old, rcu_head); *changed |= _changed; return 0; } static u8 ieee80211_num_beaconing_links(struct ieee80211_sub_if_data *sdata) { struct ieee80211_link_data *link; u8 link_id, num = 0; if (sdata->vif.type != NL80211_IFTYPE_AP && sdata->vif.type != NL80211_IFTYPE_P2P_GO) return num; /* non-MLO mode of operation also uses link_id 0 in sdata so it is * safe to directly proceed with the below loop */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { link = sdata_dereference(sdata->link[link_id], sdata); if (!link) continue; if (sdata_dereference(link->u.ap.beacon, sdata)) num++; } return num; } static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ap_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct beacon_data *old; struct ieee80211_sub_if_data *vlan; u64 changed = BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON | BSS_CHANGED_P2P_PS | BSS_CHANGED_TXPOWER | BSS_CHANGED_TWT; int i, err; int prev_beacon_int; unsigned int link_id = params->beacon.link_id; struct ieee80211_link_data *link; struct ieee80211_bss_conf *link_conf; struct ieee80211_chan_req chanreq = { .oper = params->chandef }; u64 tsf; lockdep_assert_wiphy(local->hw.wiphy); link = sdata_dereference(sdata->link[link_id], sdata); if (!link) return -ENOLINK; link_conf = link->conf; old = sdata_dereference(link->u.ap.beacon, sdata); if (old) return -EALREADY; link->smps_mode = IEEE80211_SMPS_OFF; link->needed_rx_chains = sdata->local->rx_chains; prev_beacon_int = link_conf->beacon_int; link_conf->beacon_int = params->beacon_interval; if (params->ht_cap) link_conf->ht_ldpc = params->ht_cap->cap_info & cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING); if (params->vht_cap) { link_conf->vht_ldpc = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC); link_conf->vht_su_beamformer = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE); link_conf->vht_su_beamformee = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE); link_conf->vht_mu_beamformer = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE); link_conf->vht_mu_beamformee = params->vht_cap->vht_cap_info & cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); } if (params->he_cap && params->he_oper) { link_conf->he_support = true; link_conf->htc_trig_based_pkt_ext = le32_get_bits(params->he_oper->he_oper_params, IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); link_conf->frame_time_rts_th = le32_get_bits(params->he_oper->he_oper_params, IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); changed |= BSS_CHANGED_HE_OBSS_PD; if (params->beacon.he_bss_color.enabled) changed |= BSS_CHANGED_HE_BSS_COLOR; } if (params->he_cap) { link_conf->he_ldpc = params->he_cap->phy_cap_info[1] & IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD; link_conf->he_su_beamformer = params->he_cap->phy_cap_info[3] & IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER; link_conf->he_su_beamformee = params->he_cap->phy_cap_info[4] & IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE; link_conf->he_mu_beamformer = params->he_cap->phy_cap_info[4] & IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER; link_conf->he_full_ul_mumimo = params->he_cap->phy_cap_info[2] & IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO; } if (params->eht_cap) { if (!link_conf->he_support) return -EOPNOTSUPP; link_conf->eht_support = true; link_conf->eht_su_beamformer = params->eht_cap->fixed.phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER; link_conf->eht_su_beamformee = params->eht_cap->fixed.phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE; link_conf->eht_mu_beamformer = params->eht_cap->fixed.phy_cap_info[7] & (IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ | IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ | IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ); link_conf->eht_80mhz_full_bw_ul_mumimo = params->eht_cap->fixed.phy_cap_info[7] & (IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ | IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ | IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ); link_conf->eht_disable_mcs15 = u8_get_bits(params->eht_oper->params, IEEE80211_EHT_OPER_MCS15_DISABLE); } else { link_conf->eht_su_beamformer = false; link_conf->eht_su_beamformee = false; link_conf->eht_mu_beamformer = false; } if (params->uhr_oper) { if (!link_conf->eht_support) return -EOPNOTSUPP; link_conf->uhr_support = true; } if (sdata->vif.type == NL80211_IFTYPE_AP && params->mbssid_config.tx_wdev) { err = ieee80211_set_ap_mbssid_options(sdata, ¶ms->mbssid_config, link_conf); if (err) return err; } err = ieee80211_link_use_channel(link, &chanreq, IEEE80211_CHANCTX_SHARED); if (!err) ieee80211_link_copy_chanctx_to_vlans(link, false); if (err) { link_conf->beacon_int = prev_beacon_int; return err; } /* * Apply control port protocol, this allows us to * not encrypt dynamic WEP control frames. */ sdata->control_port_protocol = params->crypto.control_port_ethertype; sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; sdata->control_port_over_nl80211 = params->crypto.control_port_over_nl80211; sdata->control_port_no_preauth = params->crypto.control_port_no_preauth; list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { vlan->control_port_protocol = params->crypto.control_port_ethertype; vlan->control_port_no_encrypt = params->crypto.control_port_no_encrypt; vlan->control_port_over_nl80211 = params->crypto.control_port_over_nl80211; vlan->control_port_no_preauth = params->crypto.control_port_no_preauth; } link_conf->dtim_period = params->dtim_period; link_conf->enable_beacon = true; link_conf->allow_p2p_go_ps = sdata->vif.p2p; link_conf->twt_responder = params->twt_responder; link_conf->he_obss_pd = params->he_obss_pd; link_conf->he_bss_color = params->beacon.he_bss_color; link_conf->s1g_long_beacon_period = params->s1g_long_beacon_period; sdata->vif.cfg.s1g = params->chandef.chan->band == NL80211_BAND_S1GHZ; sdata->vif.cfg.ssid_len = params->ssid_len; if (params->ssid_len) memcpy(sdata->vif.cfg.ssid, params->ssid, params->ssid_len); link_conf->hidden_ssid = (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); memset(&link_conf->p2p_noa_attr, 0, sizeof(link_conf->p2p_noa_attr)); link_conf->p2p_noa_attr.oppps_ctwindow = params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; if (params->p2p_opp_ps) link_conf->p2p_noa_attr.oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; sdata->beacon_rate_set = false; if (wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { for (i = 0; i < NUM_NL80211_BANDS; i++) { sdata->beacon_rateidx_mask[i] = params->beacon_rate.control[i].legacy; if (sdata->beacon_rateidx_mask[i]) sdata->beacon_rate_set = true; } } if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) link_conf->beacon_tx_rate = params->beacon_rate; err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon, NULL, NULL, &changed); if (err < 0) goto error; err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery, link, link_conf, &changed); if (err < 0) goto error; err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link, link_conf, &changed); if (err < 0) goto error; if (sdata->vif.cfg.s1g) { err = ieee80211_set_s1g_short_beacon(sdata, link, ¶ms->s1g_short_beacon); if (err < 0) goto error; } err = drv_start_ap(sdata->local, sdata, link_conf); if (err) { old = sdata_dereference(link->u.ap.beacon, sdata); if (old) kfree_rcu(old, rcu_head); RCU_INIT_POINTER(link->u.ap.beacon, NULL); if (ieee80211_num_beaconing_links(sdata) == 0) sdata->u.ap.active = false; goto error; } tsf = drv_get_tsf(local, sdata); ieee80211_recalc_dtim(sdata, tsf); if (link->u.ap.s1g_short_beacon) ieee80211_recalc_sb_count(sdata, tsf); ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID); ieee80211_link_info_change_notify(sdata, link, changed); if (ieee80211_num_beaconing_links(sdata) <= 1) netif_carrier_on(dev); list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_on(vlan->dev); return 0; error: ieee80211_link_release_channel(link); return err; } static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ap_update *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct cfg80211_beacon_data *beacon = ¶ms->beacon; struct beacon_data *old; int err; struct ieee80211_bss_conf *link_conf; u64 changed = 0; lockdep_assert_wiphy(wiphy); link = sdata_dereference(sdata->link[beacon->link_id], sdata); if (!link) return -ENOLINK; link_conf = link->conf; /* don't allow changing the beacon while a countdown is in place - offset * of channel switch counter may change */ if (link_conf->csa_active || link_conf->color_change_active) return -EBUSY; old = sdata_dereference(link->u.ap.beacon, sdata); if (!old) return -ENOENT; err = ieee80211_assign_beacon(sdata, link, beacon, NULL, NULL, &changed); if (err < 0) return err; err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery, link, link_conf, &changed); if (err < 0) return err; err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link, link_conf, &changed); if (err < 0) return err; if (link->u.ap.s1g_short_beacon) { err = ieee80211_set_s1g_short_beacon(sdata, link, ¶ms->s1g_short_beacon); if (err < 0) return err; } if (beacon->he_bss_color_valid && beacon->he_bss_color.enabled != link_conf->he_bss_color.enabled) { link_conf->he_bss_color.enabled = beacon->he_bss_color.enabled; changed |= BSS_CHANGED_HE_BSS_COLOR; } ieee80211_link_info_change_notify(sdata, link, changed); return 0; } static void ieee80211_free_next_beacon(struct ieee80211_link_data *link) { if (!link->u.ap.next_beacon) return; kfree(link->u.ap.next_beacon->mbssid_ies); kfree(link->u.ap.next_beacon->rnr_ies); kfree(link->u.ap.next_beacon); link->u.ap.next_beacon = NULL; } static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_sub_if_data *vlan; struct ieee80211_local *local = sdata->local; struct beacon_data *old_beacon; struct probe_resp *old_probe_resp; struct fils_discovery_data *old_fils_discovery; struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp; struct s1g_short_beacon_data *old_s1g_short_beacon; struct cfg80211_chan_def chandef; struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); struct ieee80211_bss_conf *link_conf = link->conf; LIST_HEAD(keys); lockdep_assert_wiphy(local->hw.wiphy); old_beacon = sdata_dereference(link->u.ap.beacon, sdata); if (!old_beacon) return -ENOENT; old_probe_resp = sdata_dereference(link->u.ap.probe_resp, sdata); old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery, sdata); old_unsol_bcast_probe_resp = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata); old_s1g_short_beacon = sdata_dereference(link->u.ap.s1g_short_beacon, sdata); /* abort any running channel switch or color change */ link_conf->csa_active = false; link_conf->color_change_active = false; ieee80211_vif_unblock_queues_csa(sdata); ieee80211_free_next_beacon(link); /* turn off carrier for this interface and dependent VLANs */ list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) netif_carrier_off(vlan->dev); if (ieee80211_num_beaconing_links(sdata) <= 1) { netif_carrier_off(dev); sdata->u.ap.active = false; } /* remove beacon and probe response */ RCU_INIT_POINTER(link->u.ap.beacon, NULL); RCU_INIT_POINTER(link->u.ap.probe_resp, NULL); RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL); RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL); RCU_INIT_POINTER(link->u.ap.s1g_short_beacon, NULL); kfree_rcu(old_beacon, rcu_head); if (old_probe_resp) kfree_rcu(old_probe_resp, rcu_head); if (old_fils_discovery) kfree_rcu(old_fils_discovery, rcu_head); if (old_unsol_bcast_probe_resp) kfree_rcu(old_unsol_bcast_probe_resp, rcu_head); if (old_s1g_short_beacon) kfree_rcu(old_s1g_short_beacon, rcu_head); kfree(link_conf->ftmr_params); link_conf->ftmr_params = NULL; link_conf->bssid_index = 0; link_conf->nontransmitted = false; link_conf->ema_ap = false; link_conf->bssid_indicator = 0; link_conf->fils_discovery.min_interval = 0; link_conf->fils_discovery.max_interval = 0; link_conf->unsol_bcast_probe_resp_interval = 0; __sta_info_flush(sdata, true, link_id, NULL); ieee80211_stop_mbssid(sdata); RCU_INIT_POINTER(link_conf->tx_bss_conf, NULL); link_conf->enable_beacon = false; sdata->beacon_rate_set = false; sdata->vif.cfg.ssid_len = 0; sdata->vif.cfg.s1g = false; clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_BEACON_ENABLED); ieee80211_remove_link_keys(link, &keys); if (!list_empty(&keys)) { synchronize_net(); ieee80211_free_key_list(local, &keys); } if (sdata->wdev.links[link_id].cac_started) { chandef = link_conf->chanreq.oper; wiphy_hrtimer_work_cancel(wiphy, &link->dfs_cac_timer_work); cfg80211_cac_event(sdata->dev, &chandef, NL80211_RADAR_CAC_ABORTED, GFP_KERNEL, link_id); } drv_stop_ap(sdata->local, sdata, link_conf); /* free all potentially still buffered bcast frames */ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); ieee80211_link_copy_chanctx_to_vlans(link, true); ieee80211_link_release_channel(link); return 0; } static int sta_apply_auth_flags(struct ieee80211_local *local, struct sta_info *sta, u32 mask, u32 set) { int ret; if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && set & BIT(NL80211_STA_FLAG_ASSOCIATED) && !test_sta_flag(sta, WLAN_STA_ASSOC)) { /* * When peer becomes associated, init rate control as * well. Some drivers require rate control initialized * before drv_sta_state() is called. */ if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) rate_control_rate_init_all_links(sta); ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); else ret = 0; if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && test_sta_flag(sta, WLAN_STA_ASSOC)) { ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && test_sta_flag(sta, WLAN_STA_AUTH)) { ret = sta_info_move_state(sta, IEEE80211_STA_NONE); if (ret) return ret; } return 0; } static void sta_apply_mesh_params(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { #ifdef CONFIG_MAC80211_MESH struct ieee80211_sub_if_data *sdata = sta->sdata; u64 changed = 0; if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { switch (params->plink_state) { case NL80211_PLINK_ESTAB: if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) changed = mesh_plink_inc_estab_count(sdata); sta->mesh->plink_state = params->plink_state; sta->mesh->aid = params->peer_aid; ieee80211_mps_sta_status_update(sta); changed |= ieee80211_mps_set_sta_local_pm(sta, sdata->u.mesh.mshcfg.power_mode); ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg); /* init at low value */ ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10); break; case NL80211_PLINK_LISTEN: case NL80211_PLINK_BLOCKED: case NL80211_PLINK_OPN_SNT: case NL80211_PLINK_OPN_RCVD: case NL80211_PLINK_CNF_RCVD: case NL80211_PLINK_HOLDING: if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) changed = mesh_plink_dec_estab_count(sdata); sta->mesh->plink_state = params->plink_state; ieee80211_mps_sta_status_update(sta); changed |= ieee80211_mps_set_sta_local_pm(sta, NL80211_MESH_POWER_UNKNOWN); break; default: /* nothing */ break; } } switch (params->plink_action) { case NL80211_PLINK_ACTION_NO_ACTION: /* nothing */ break; case NL80211_PLINK_ACTION_OPEN: changed |= mesh_plink_open(sta); break; case NL80211_PLINK_ACTION_BLOCK: changed |= mesh_plink_block(sta); break; } if (params->local_pm) changed |= ieee80211_mps_set_sta_local_pm(sta, params->local_pm); ieee80211_mbss_info_change_notify(sdata, changed); #endif } enum sta_link_apply_mode { STA_LINK_MODE_NEW, STA_LINK_MODE_STA_MODIFY, STA_LINK_MODE_LINK_MODIFY, }; static int sta_link_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, enum sta_link_apply_mode mode, struct link_station_parameters *params) { struct ieee80211_supported_band *sband = NULL; struct ieee80211_sub_if_data *sdata = sta->sdata; u32 link_id = params->link_id < 0 ? 0 : params->link_id; struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); struct link_sta_info *link_sta = rcu_dereference_protected(sta->link[link_id], lockdep_is_held(&local->hw.wiphy->mtx)); const struct ieee80211_sta_ht_cap *own_ht_cap; const struct ieee80211_sta_vht_cap *own_vht_cap; const struct ieee80211_sta_he_cap *own_he_cap; bool changes = params->link_mac || params->txpwr_set || params->supported_rates_len || params->ht_capa || params->vht_capa || params->he_capa || params->eht_capa || params->uhr_capa || params->s1g_capa || params->opmode_notif_used; switch (mode) { case STA_LINK_MODE_NEW: if (!params->link_mac) return -EINVAL; break; case STA_LINK_MODE_LINK_MODIFY: break; case STA_LINK_MODE_STA_MODIFY: if (params->link_id >= 0) break; if (!changes) return 0; break; } if (!link || !link_sta) return -EINVAL; /* * We should not have any changes in NDI station, its capabilities are * copied from the NMI sta */ if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_NAN_DATA)) return -EINVAL; if (sdata->vif.type == NL80211_IFTYPE_NAN) { own_ht_cap = &local->hw.wiphy->nan_capa.phy.ht; own_vht_cap = &local->hw.wiphy->nan_capa.phy.vht; own_he_cap = &local->hw.wiphy->nan_capa.phy.he; } else { sband = ieee80211_get_link_sband(link); if (!sband) return -EINVAL; own_ht_cap = &sband->ht_cap; own_vht_cap = &sband->vht_cap; own_he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); } if (params->link_mac) { if (mode == STA_LINK_MODE_NEW) { memcpy(link_sta->addr, params->link_mac, ETH_ALEN); memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN); } else if (!ether_addr_equal(link_sta->addr, params->link_mac)) { return -EINVAL; } } if (params->txpwr_set) { int ret; link_sta->pub->txpwr.type = params->txpwr.type; if (params->txpwr.type == NL80211_TX_POWER_LIMITED) link_sta->pub->txpwr.power = params->txpwr.power; ret = drv_sta_set_txpwr(local, sdata, sta); if (ret) return ret; } if (sdata->vif.type == NL80211_IFTYPE_NAN) { static const u8 all_ofdm_rates[] = { 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c }; /* Set the same supported_rates for all bands */ for (int i = 0; i < NUM_NL80211_BANDS; i++) { struct ieee80211_supported_band *tmp = sdata->local->hw.wiphy->bands[i]; if ((i != NL80211_BAND_2GHZ && i != NL80211_BAND_5GHZ) || !tmp) continue; if (!ieee80211_parse_bitrates(tmp, all_ofdm_rates, sizeof(all_ofdm_rates), &link_sta->pub->supp_rates[i])) return -EINVAL; } } if (params->supported_rates && params->supported_rates_len && !ieee80211_parse_bitrates(sband, params->supported_rates, params->supported_rates_len, &link_sta->pub->supp_rates[sband->band])) return -EINVAL; if (params->ht_capa) ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, own_ht_cap, params->ht_capa, link_sta); /* VHT can override some HT caps such as the A-MSDU max length */ if (params->vht_capa) ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, own_vht_cap, params->vht_capa, NULL, link_sta); if (params->he_capa) _ieee80211_he_cap_ie_to_sta_he_cap(sdata, own_he_cap, (void *)params->he_capa, params->he_capa_len, (sband && sband->band == NL80211_BAND_6GHZ) ? (void *)params->he_6ghz_capa : NULL, link_sta); if (params->he_capa && params->eht_capa) ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband, (u8 *)params->he_capa, params->he_capa_len, params->eht_capa, params->eht_capa_len, link_sta); if (params->uhr_capa) ieee80211_uhr_cap_ie_to_sta_uhr_cap(sdata, sband, params->uhr_capa, params->uhr_capa_len, link_sta); if (params->s1g_capa) ieee80211_s1g_cap_to_sta_s1g_cap(sdata, params->s1g_capa, link_sta); ieee80211_sta_init_nss(link_sta); if (params->opmode_notif_used) { enum nl80211_chan_width width = link->conf->chanreq.oper.width; switch (width) { case NL80211_CHAN_WIDTH_20: case NL80211_CHAN_WIDTH_40: case NL80211_CHAN_WIDTH_80: case NL80211_CHAN_WIDTH_160: case NL80211_CHAN_WIDTH_80P80: case NL80211_CHAN_WIDTH_320: /* not VHT, allowed for HE/EHT */ break; default: return -EINVAL; } /* returned value is only needed for rc update, but the * rc isn't initialized here yet, so ignore it */ __ieee80211_vht_handle_opmode(sdata, link_sta, params->opmode_notif, sband->band); } return 0; } static int sta_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = sta->sdata; u32 mask, set; int ret = 0; mask = params->sta_flags_mask; set = params->sta_flags_set; if (params->epp_peer) sta->sta.epp_peer = true; if (ieee80211_vif_is_mesh(&sdata->vif)) { /* * In mesh mode, ASSOCIATED isn't part of the nl80211 * API but must follow AUTHENTICATED for driver state. */ if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) set |= BIT(NL80211_STA_FLAG_ASSOCIATED); } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { /* * TDLS -- everything follows authorized, but * only becoming authorized is possible, not * going back */ if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | BIT(NL80211_STA_FLAG_ASSOCIATED); mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | BIT(NL80211_STA_FLAG_ASSOCIATED); } } if (mask & BIT(NL80211_STA_FLAG_WME) && local->hw.queues >= IEEE80211_NUM_ACS) sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); /* auth flags will be set later for TDLS, * and for unassociated stations that move to associated */ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { ret = sta_apply_auth_flags(local, sta, mask, set); if (ret) return ret; } if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); else clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); } if (mask & BIT(NL80211_STA_FLAG_MFP)) { sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); if (set & BIT(NL80211_STA_FLAG_MFP)) set_sta_flag(sta, WLAN_STA_MFP); else clear_sta_flag(sta, WLAN_STA_MFP); } if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) set_sta_flag(sta, WLAN_STA_TDLS_PEER); else clear_sta_flag(sta, WLAN_STA_TDLS_PEER); } if (mask & BIT(NL80211_STA_FLAG_SPP_AMSDU)) sta->sta.spp_amsdu = set & BIT(NL80211_STA_FLAG_SPP_AMSDU); /* mark TDLS channel switch support, if the AP allows it */ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !sdata->deflink.u.mgd.tdls_chan_switch_prohibited && params->ext_capab_len >= 4 && params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && !sdata->u.mgd.tdls_wider_bw_prohibited && ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && params->ext_capab_len >= 8 && params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { sta->sta.uapsd_queues = params->uapsd_queues; sta->sta.max_sp = params->max_sp; } ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab, params->ext_capab_len); /* * cfg80211 validates this (1-2007) and allows setting the AID * only when creating a new station entry. For S1G APs, the current * implementation supports a maximum of 1600 AIDs. */ if (params->aid) { if (sdata->vif.cfg.s1g && params->aid > IEEE80211_MAX_SUPPORTED_S1G_AID) return -EINVAL; sta->sta.aid = params->aid; } /* * Some of the following updates would be racy if called on an * existing station, via ieee80211_change_station(). However, * all such changes are rejected by cfg80211 except for updates * changing the supported rates on an existing but not yet used * TDLS peer. */ if (params->listen_interval >= 0) sta->listen_interval = params->listen_interval; if (params->eml_cap_present) sta->sta.eml_cap = params->eml_cap; ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_STA_MODIFY, ¶ms->link_sta_params); if (ret) return ret; if (params->support_p2p_ps >= 0) sta->sta.support_p2p_ps = params->support_p2p_ps; if (ieee80211_vif_is_mesh(&sdata->vif)) sta_apply_mesh_params(local, sta, params); if (params->airtime_weight) sta->airtime_weight = params->airtime_weight; if (params->nmi_mac) { struct ieee80211_sub_if_data *nmi = rcu_dereference_wiphy(local->hw.wiphy, sdata->u.nan_data.nmi); struct sta_info *nmi_sta; if (WARN_ON(!nmi)) return -EINVAL; nmi_sta = sta_info_get(nmi, params->nmi_mac); if (!nmi_sta) return -ENOENT; rcu_assign_pointer(sta->sta.nmi, &nmi_sta->sta); /* For NAN_DATA stations, copy capabilities from the NMI station */ if (!nmi_sta->deflink.pub->ht_cap.ht_supported) return -EINVAL; sta->deflink.pub->ht_cap = nmi_sta->deflink.pub->ht_cap; sta->deflink.pub->vht_cap = nmi_sta->deflink.pub->vht_cap; sta->deflink.pub->he_cap = nmi_sta->deflink.pub->he_cap; memcpy(&sta->deflink.pub->supp_rates, &nmi_sta->deflink.pub->supp_rates, sizeof(sta->deflink.pub->supp_rates)); } /* set the STA state after all sta info from usermode has been set */ if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { ret = sta_apply_auth_flags(local, sta, mask, set); if (ret) return ret; } /* Mark the STA as MLO if MLD MAC address is available */ if (params->link_sta_params.mld_mac) sta->sta.mlo = true; return 0; } static int ieee80211_add_station(struct wiphy *wiphy, struct wireless_dev *wdev, const u8 *mac, struct station_parameters *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; int err; lockdep_assert_wiphy(local->hw.wiphy); if (params->vlan) { sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sdata->vif.type != NL80211_IFTYPE_AP) return -EINVAL; } else sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (ether_addr_equal(mac, sdata->vif.addr)) return -EINVAL; if (!is_valid_ether_addr(mac)) return -EINVAL; if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) && sdata->vif.type == NL80211_IFTYPE_STATION && !sdata->u.mgd.associated) return -EINVAL; /* * If we have a link ID, it can be a non-MLO station on an AP MLD, * but we need to have a link_mac in that case as well, so use the * STA's MAC address in that case. */ if (params->link_sta_params.link_id >= 0) sta = sta_info_alloc_with_link(sdata, mac, params->link_sta_params.link_id, params->link_sta_params.link_mac ?: mac, GFP_KERNEL); else sta = sta_info_alloc(sdata, mac, GFP_KERNEL); if (!sta) return -ENOMEM; if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) sta->sta.tdls = true; /* Though the mutex is not needed here (since the station is not * visible yet), sta_apply_parameters (and inner functions) require * the mutex due to other paths. */ err = sta_apply_parameters(local, sta, params); if (err) { sta_info_free(local, sta); return err; } /* * for TDLS and for unassociated station, rate control should be * initialized only when rates are known and station is marked * authorized/associated */ if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && test_sta_flag(sta, WLAN_STA_ASSOC)) rate_control_rate_init_all_links(sta); err = sta_info_insert(sta); /* * ieee80211_nan_update_ndi_carrier was called from sta_apply_parameters, * but then we did not have the STA in the list. */ if (!err && sdata->vif.type == NL80211_IFTYPE_NAN_DATA) ieee80211_nan_update_ndi_carrier(sta->sdata); return err; } static int ieee80211_del_station(struct wiphy *wiphy, struct wireless_dev *wdev, struct station_del_parameters *params) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (params->mac) return sta_info_destroy_addr_bss(sdata, params->mac); sta_info_flush(sdata, params->link_id); return 0; } static int ieee80211_set_sta_4addr(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, struct sta_info *sta) { struct ieee80211_vif *vif = &sdata->vif; struct wiphy *wiphy = local->hw.wiphy; struct ieee80211_sub_if_data *master; struct ieee80211_bss_conf *link_conf; struct wireless_dev *wdev; unsigned long master_iter; int link_id; int err; lockdep_assert_wiphy(local->hw.wiphy); if (sdata->u.vlan.sta) return -EBUSY; wdev = &sdata->wdev; master = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); if (sta->sta.valid_links) { u16 sta_links = sta->sta.valid_links; u16 new_links = master->vif.valid_links & sta_links; u16 orig_links = wdev->valid_links; wdev->valid_links = new_links; err = ieee80211_vif_set_links(sdata, new_links, 0); if (err) { wdev->valid_links = orig_links; return err; } master_iter = master->vif.valid_links; for_each_set_bit(link_id, &master_iter, IEEE80211_MLD_MAX_NUM_LINKS) { if (!(sta_links & BIT(link_id))) { eth_zero_addr(wdev->links[link_id].addr); } else { link_conf = wiphy_dereference(wiphy, vif->link_conf[link_id]); ether_addr_copy(wdev->links[link_id].addr, link_conf->bssid); } } } rcu_assign_pointer(sdata->u.vlan.sta, sta); __ieee80211_check_fast_rx_iface(sdata); drv_sta_set_4addr(local, sta->sdata, &sta->sta, true); return 0; } static int ieee80211_change_station(struct wiphy *wiphy, struct wireless_dev *wdev, const u8 *mac, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; enum cfg80211_station_type statype; int err; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, mac); if (!sta) return -ENOENT; switch (sdata->vif.type) { case NL80211_IFTYPE_MESH_POINT: if (sdata->u.mesh.user_mpm) statype = CFG80211_STA_MESH_PEER_USER; else statype = CFG80211_STA_MESH_PEER_KERNEL; break; case NL80211_IFTYPE_ADHOC: statype = CFG80211_STA_IBSS; break; case NL80211_IFTYPE_STATION: if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { statype = CFG80211_STA_AP_STA; break; } if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) statype = CFG80211_STA_TDLS_PEER_ACTIVE; else statype = CFG80211_STA_TDLS_PEER_SETUP; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: if (test_sta_flag(sta, WLAN_STA_ASSOC)) statype = CFG80211_STA_AP_CLIENT; else statype = CFG80211_STA_AP_CLIENT_UNASSOC; break; case NL80211_IFTYPE_NAN: statype = CFG80211_STA_NAN_MGMT; break; case NL80211_IFTYPE_NAN_DATA: statype = CFG80211_STA_NAN_DATA; break; default: return -EOPNOTSUPP; } err = cfg80211_check_station_change(wiphy, params, statype); if (err) return err; if (params->vlan && params->vlan != sta->sdata->dev) { vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (params->vlan->ieee80211_ptr->use_4addr) { err = ieee80211_set_sta_4addr(local, vlansdata, sta); if (err) return err; } if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sta->sdata->u.vlan.sta) RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) ieee80211_vif_dec_num_mcast(sta->sdata); sta->sdata = vlansdata; ieee80211_check_fast_rx(sta); ieee80211_check_fast_xmit(sta); if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { ieee80211_vif_inc_num_mcast(sta->sdata); cfg80211_send_layer2_update(sta->sdata->dev, sta->sta.addr); } } /* NAN capabilties should not change */ if (statype == CFG80211_STA_NAN_DATA && sta->deflink.pub->ht_cap.ht_supported && (params->link_sta_params.ht_capa || params->link_sta_params.vht_capa || params->link_sta_params.he_capa)) return -EINVAL; err = sta_apply_parameters(local, sta, params); if (err) return err; if (sdata->vif.type == NL80211_IFTYPE_STATION && params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { ieee80211_recalc_ps(local); ieee80211_recalc_ps_vif(sdata); } return 0; } #ifdef CONFIG_MAC80211_MESH static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst, const u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_add(sdata, dst); if (IS_ERR(mpath)) { rcu_read_unlock(); return PTR_ERR(mpath); } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (dst) return mesh_path_del(sdata, dst); mesh_path_flush_by_iface(sdata); return 0; } static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, const u8 *dst, const u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, struct mpath_info *pinfo) { struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); if (next_hop_sta) memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); else eth_zero_addr(next_hop); memset(pinfo, 0, sizeof(*pinfo)); pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; pinfo->filled = MPATH_INFO_FRAME_QLEN | MPATH_INFO_SN | MPATH_INFO_METRIC | MPATH_INFO_EXPTIME | MPATH_INFO_DISCOVERY_TIMEOUT | MPATH_INFO_DISCOVERY_RETRIES | MPATH_INFO_FLAGS | MPATH_INFO_HOP_COUNT | MPATH_INFO_PATH_CHANGE; pinfo->frame_qlen = mpath->frame_queue.qlen; pinfo->sn = mpath->sn; pinfo->metric = mpath->metric; if (time_before(jiffies, mpath->exp_time)) pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); pinfo->discovery_timeout = jiffies_to_msecs(mpath->discovery_timeout); pinfo->discovery_retries = mpath->discovery_retries; if (mpath->flags & MESH_PATH_ACTIVE) pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; if (mpath->flags & MESH_PATH_SN_VALID) pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; if (mpath->flags & MESH_PATH_FIXED) pinfo->flags |= NL80211_MPATH_FLAG_FIXED; if (mpath->flags & MESH_PATH_RESOLVED) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; pinfo->hop_count = mpath->hop_count; pinfo->path_change_count = mpath->path_change_count; } static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup_by_idx(sdata, idx); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, struct mpath_info *pinfo) { memset(pinfo, 0, sizeof(*pinfo)); memcpy(mpp, mpath->mpp, ETH_ALEN); pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; } static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *mpp, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mpp_path_lookup(sdata, dst); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpp_set_pinfo(mpath, mpp, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *mpp, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mpp_path_lookup_by_idx(sdata, idx); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpp_set_pinfo(mpath, mpp, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_get_mesh_config(struct wiphy *wiphy, struct net_device *dev, struct mesh_config *conf) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); return 0; } static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) { return (mask >> (parm-1)) & 0x1; } static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, const struct mesh_setup *setup) { u8 *new_ie; struct ieee80211_sub_if_data *sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh); int i; /* allocate information elements */ new_ie = NULL; if (setup->ie_len) { new_ie = kmemdup(setup->ie, setup->ie_len, GFP_KERNEL); if (!new_ie) return -ENOMEM; } ifmsh->ie_len = setup->ie_len; ifmsh->ie = new_ie; /* now copy the rest of the setup parameters */ ifmsh->mesh_id_len = setup->mesh_id_len; memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); ifmsh->mesh_sp_id = setup->sync_method; ifmsh->mesh_pp_id = setup->path_sel_proto; ifmsh->mesh_pm_id = setup->path_metric; ifmsh->user_mpm = setup->user_mpm; ifmsh->mesh_auth_id = setup->auth_id; ifmsh->security = IEEE80211_MESH_SEC_NONE; ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs; if (setup->is_authenticated) ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; if (setup->is_secure) ifmsh->security |= IEEE80211_MESH_SEC_SECURED; /* mcast rate setting in Mesh Node */ memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, sizeof(setup->mcast_rate)); sdata->vif.bss_conf.basic_rates = setup->basic_rates; sdata->vif.bss_conf.beacon_int = setup->beacon_interval; sdata->vif.bss_conf.dtim_period = setup->dtim_period; sdata->beacon_rate_set = false; if (wiphy_ext_feature_isset(sdata->local->hw.wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { for (i = 0; i < NUM_NL80211_BANDS; i++) { sdata->beacon_rateidx_mask[i] = setup->beacon_rate.control[i].legacy; if (sdata->beacon_rateidx_mask[i]) sdata->beacon_rate_set = true; } } return 0; } static int ieee80211_update_mesh_config(struct wiphy *wiphy, struct net_device *dev, u32 mask, const struct mesh_config *nconf) { struct mesh_config *conf; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_mesh *ifmsh; sdata = IEEE80211_DEV_TO_SUB_IF(dev); ifmsh = &sdata->u.mesh; /* Set the config options which we are interested in setting */ conf = &(sdata->u.mesh.mshcfg); if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) conf->dot11MeshTTL = nconf->dot11MeshTTL; if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) conf->element_ttl = nconf->element_ttl; if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { if (ifmsh->user_mpm) return -EBUSY; conf->auto_open_plinks = nconf->auto_open_plinks; } if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) conf->dot11MeshNbrOffsetMaxNeighbor = nconf->dot11MeshNbrOffsetMaxNeighbor; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) conf->dot11MeshHWMPmaxPREQretries = nconf->dot11MeshHWMPmaxPREQretries; if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) conf->path_refresh_time = nconf->path_refresh_time; if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) conf->min_discovery_timeout = nconf->min_discovery_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathTimeout = nconf->dot11MeshHWMPactivePathTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) conf->dot11MeshHWMPpreqMinInterval = nconf->dot11MeshHWMPpreqMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) conf->dot11MeshHWMPperrMinInterval = nconf->dot11MeshHWMPperrMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, mask)) conf->dot11MeshHWMPnetDiameterTraversalTime = nconf->dot11MeshHWMPnetDiameterTraversalTime; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; ieee80211_mesh_root_setup(ifmsh); } if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { /* our current gate announcement implementation rides on root * announcements, so require this ifmsh to also be a root node * */ if (nconf->dot11MeshGateAnnouncementProtocol && !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; ieee80211_mesh_root_setup(ifmsh); } conf->dot11MeshGateAnnouncementProtocol = nconf->dot11MeshGateAnnouncementProtocol; } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) conf->dot11MeshHWMPRannInterval = nconf->dot11MeshHWMPRannInterval; if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) conf->dot11MeshForwarding = nconf->dot11MeshForwarding; if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { /* our RSSI threshold implementation is supported only for * devices that report signal in dBm. */ if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) return -EOPNOTSUPP; conf->rssi_threshold = nconf->rssi_threshold; } if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { conf->ht_opmode = nconf->ht_opmode; sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_HT); } if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathToRootTimeout = nconf->dot11MeshHWMPactivePathToRootTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) conf->dot11MeshHWMProotInterval = nconf->dot11MeshHWMProotInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) conf->dot11MeshHWMPconfirmationInterval = nconf->dot11MeshHWMPconfirmationInterval; if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { conf->power_mode = nconf->power_mode; ieee80211_mps_local_status_update(sdata); } if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) conf->dot11MeshAwakeWindowDuration = nconf->dot11MeshAwakeWindowDuration; if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) conf->plink_timeout = nconf->plink_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) conf->dot11MeshConnectedToMeshGate = nconf->dot11MeshConnectedToMeshGate; if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask)) conf->dot11MeshNolearn = nconf->dot11MeshNolearn; if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask)) conf->dot11MeshConnectedToAuthServer = nconf->dot11MeshConnectedToAuthServer; ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); return 0; } static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, const struct mesh_config *conf, const struct mesh_setup *setup) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = setup->chandef }; struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; int err; lockdep_assert_wiphy(sdata->local->hw.wiphy); memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); err = copy_mesh_setup(ifmsh, setup); if (err) return err; sdata->control_port_over_nl80211 = setup->control_port_over_nl80211; /* can mesh use other SMPS modes? */ sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; sdata->deflink.needed_rx_chains = sdata->local->rx_chains; err = ieee80211_link_use_channel(&sdata->deflink, &chanreq, IEEE80211_CHANCTX_SHARED); if (err) return err; return ieee80211_start_mesh(sdata); } static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); ieee80211_stop_mesh(sdata); ieee80211_link_release_channel(&sdata->deflink); kfree(sdata->u.mesh.ie); return 0; } #endif static int ieee80211_change_bss(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct ieee80211_supported_band *sband; u64 changed = 0; link = ieee80211_link_or_deflink(sdata, params->link_id, true); if (IS_ERR(link)) return PTR_ERR(link); if (!sdata_dereference(link->u.ap.beacon, sdata)) return -ENOENT; sband = ieee80211_get_link_sband(link); if (!sband) return -EINVAL; if (params->basic_rates) { if (!ieee80211_parse_bitrates(sband, params->basic_rates, params->basic_rates_len, &link->conf->basic_rates)) return -EINVAL; changed |= BSS_CHANGED_BASIC_RATES; ieee80211_check_rate_mask(link); } if (params->use_cts_prot >= 0) { link->conf->use_cts_prot = params->use_cts_prot; changed |= BSS_CHANGED_ERP_CTS_PROT; } if (params->use_short_preamble >= 0) { link->conf->use_short_preamble = params->use_short_preamble; changed |= BSS_CHANGED_ERP_PREAMBLE; } if (!link->conf->use_short_slot && (sband->band == NL80211_BAND_5GHZ || sband->band == NL80211_BAND_6GHZ)) { link->conf->use_short_slot = true; changed |= BSS_CHANGED_ERP_SLOT; } if (params->use_short_slot_time >= 0) { link->conf->use_short_slot = params->use_short_slot_time; changed |= BSS_CHANGED_ERP_SLOT; } if (params->ap_isolate >= 0) { if (params->ap_isolate) sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; else sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; ieee80211_check_fast_rx_iface(sdata); } if (params->ht_opmode >= 0) { link->conf->ht_operation_mode = (u16)params->ht_opmode; changed |= BSS_CHANGED_HT; } if (params->p2p_ctwindow >= 0) { link->conf->p2p_noa_attr.oppps_ctwindow &= ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; link->conf->p2p_noa_attr.oppps_ctwindow |= params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; changed |= BSS_CHANGED_P2P_PS; } if (params->p2p_opp_ps > 0) { link->conf->p2p_noa_attr.oppps_ctwindow |= IEEE80211_P2P_OPPPS_ENABLE_BIT; changed |= BSS_CHANGED_P2P_PS; } else if (params->p2p_opp_ps == 0) { link->conf->p2p_noa_attr.oppps_ctwindow &= ~IEEE80211_P2P_OPPPS_ENABLE_BIT; changed |= BSS_CHANGED_P2P_PS; } ieee80211_link_info_change_notify(sdata, link, changed); return 0; } static int ieee80211_set_txq_params(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_txq_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link = ieee80211_link_or_deflink(sdata, params->link_id, true); struct ieee80211_tx_queue_params p; if (!local->ops->conf_tx) return -EOPNOTSUPP; if (local->hw.queues < IEEE80211_NUM_ACS) return -EOPNOTSUPP; if (IS_ERR(link)) return PTR_ERR(link); memset(&p, 0, sizeof(p)); p.aifs = params->aifs; p.cw_max = params->cwmax; p.cw_min = params->cwmin; p.txop = params->txop; /* * Setting tx queue params disables u-apsd because it's only * called in master mode. */ p.uapsd = false; ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac); link->tx_conf[params->ac] = p; if (drv_conf_tx(local, link, params->ac, &p)) { wiphy_debug(local->hw.wiphy, "failed to set TX queue parameters for AC %d\n", params->ac); return -EINVAL; } ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_QOS); return 0; } #ifdef CONFIG_PM static int ieee80211_suspend(struct wiphy *wiphy, struct cfg80211_wowlan *wowlan) { return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); } static int ieee80211_resume(struct wiphy *wiphy) { return __ieee80211_resume(wiphy_priv(wiphy)); } #else #define ieee80211_suspend NULL #define ieee80211_resume NULL #endif static int ieee80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *req) { struct ieee80211_sub_if_data *sdata; struct ieee80211_link_data *link; struct ieee80211_channel *chan; int radio_idx; sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); switch (ieee80211_vif_type_p2p(&sdata->vif)) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_P2P_DEVICE: break; case NL80211_IFTYPE_P2P_GO: if (sdata->local->ops->hw_scan) break; /* * FIXME: implement NoA while scanning in software, * for now fall through to allow scanning only when * beaconing hasn't been configured yet */ fallthrough; case NL80211_IFTYPE_AP: /* * If the scan has been forced (and the driver supports * forcing), don't care about being beaconing already. * This will create problems to the attached stations (e.g. all * the frames sent while scanning on other channel will be * lost) */ for_each_link_data(sdata, link) { /* if the link is not beaconing, ignore it */ if (!sdata_dereference(link->u.ap.beacon, sdata)) continue; chan = link->conf->chanreq.oper.chan; radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); if (ieee80211_is_radio_idx_in_scan_req(wiphy, req, radio_idx) && (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || !(req->flags & NL80211_SCAN_FLAG_AP))) return -EOPNOTSUPP; } break; case NL80211_IFTYPE_NAN: default: return -EOPNOTSUPP; } return ieee80211_request_scan(sdata, req); } static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) { ieee80211_scan_cancel(wiphy_priv(wiphy)); } static int ieee80211_sched_scan_start(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_sched_scan_request *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->local->ops->sched_scan_start) return -EOPNOTSUPP; return ieee80211_request_sched_scan_start(sdata, req); } static int ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, u64 reqid) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->sched_scan_stop) return -EOPNOTSUPP; return ieee80211_request_sched_scan_stop(local); } static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req) { return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req) { return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_deauth_request *req) { return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req) { return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params) { return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); } static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) { return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); } static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, struct ocb_setup *setup) { return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); } static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) { return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); } static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, int rate[NUM_NL80211_BANDS]) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(int) * NUM_NL80211_BANDS); if (ieee80211_sdata_running(sdata)) ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_MCAST_RATE); return 0; } static int ieee80211_set_wiphy_params(struct wiphy *wiphy, int radio_idx, u32 changed) { struct ieee80211_local *local = wiphy_priv(wiphy); int err; if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { ieee80211_check_fast_xmit_all(local); err = drv_set_frag_threshold(local, radio_idx, wiphy->frag_threshold); if (err) { ieee80211_check_fast_xmit_all(local); return err; } } if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || (changed & WIPHY_PARAM_DYN_ACK)) { s16 coverage_class; coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? wiphy->coverage_class : -1; err = drv_set_coverage_class(local, radio_idx, coverage_class); if (err) return err; } if (changed & WIPHY_PARAM_RTS_THRESHOLD) { u32 rts_threshold; if ((radio_idx == -1) || (radio_idx >= wiphy->n_radio)) rts_threshold = wiphy->rts_threshold; else rts_threshold = wiphy->radio_cfg[radio_idx].rts_threshold; err = drv_set_rts_threshold(local, radio_idx, rts_threshold); if (err) return err; } if (changed & WIPHY_PARAM_RETRY_SHORT) { if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) return -EINVAL; local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; } if (changed & WIPHY_PARAM_RETRY_LONG) { if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) return -EINVAL; local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; } if (changed & (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) ieee80211_hw_config(local, radio_idx, IEEE80211_CONF_CHANGE_RETRY_LIMITS); if (changed & (WIPHY_PARAM_TXQ_LIMIT | WIPHY_PARAM_TXQ_MEMORY_LIMIT | WIPHY_PARAM_TXQ_QUANTUM)) ieee80211_txq_set_params(local, radio_idx); return 0; } static int ieee80211_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, int radio_idx, enum nl80211_tx_power_setting type, int mbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; enum nl80211_tx_power_setting txp_type = type; bool update_txp_type = false; bool has_monitor = false; int user_power_level; int old_power = local->user_power_level; lockdep_assert_wiphy(local->hw.wiphy); switch (type) { case NL80211_TX_POWER_AUTOMATIC: user_power_level = IEEE80211_UNSET_POWER_LEVEL; txp_type = NL80211_TX_POWER_LIMITED; break; case NL80211_TX_POWER_LIMITED: case NL80211_TX_POWER_FIXED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; user_power_level = MBM_TO_DBM(mbm); break; default: return -EINVAL; } if (wdev) { sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) return -EOPNOTSUPP; sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (!sdata) return -EOPNOTSUPP; } for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; link->user_power_level = user_power_level; if (txp_type != link->conf->txpower_type) { update_txp_type = true; link->conf->txpower_type = txp_type; } ieee80211_recalc_txpower(link, update_txp_type); } return 0; } local->user_power_level = user_power_level; list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) { has_monitor = true; continue; } for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; link->user_power_level = local->user_power_level; if (txp_type != link->conf->txpower_type) update_txp_type = true; link->conf->txpower_type = txp_type; } } list_for_each_entry(sdata, &local->interfaces, list) { if (sdata->vif.type == NL80211_IFTYPE_MONITOR && !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) continue; for (int link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) continue; ieee80211_recalc_txpower(link, update_txp_type); } } if (has_monitor) { sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) { sdata->deflink.user_power_level = local->user_power_level; if (txp_type != sdata->vif.bss_conf.txpower_type) update_txp_type = true; sdata->vif.bss_conf.txpower_type = txp_type; ieee80211_recalc_txpower(&sdata->deflink, update_txp_type); } } if (local->emulate_chanctx && (old_power != local->user_power_level)) ieee80211_hw_conf_chan(local); return 0; } static int ieee80211_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, int radio_idx, unsigned int link_id, int *dbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_link_data *link_data; if (local->ops->get_txpower && (sdata->flags & IEEE80211_SDATA_IN_DRIVER)) return drv_get_txpower(local, sdata, link_id, dbm); if (local->emulate_chanctx) { *dbm = local->hw.conf.power_level; } else { link_data = wiphy_dereference(wiphy, sdata->link[link_id]); if (link_data) *dbm = link_data->conf->txpower; else return -ENOLINK; } /* INT_MIN indicates no power level was set yet */ if (*dbm == INT_MIN) return -EINVAL; return 0; } static void ieee80211_rfkill_poll(struct wiphy *wiphy) { struct ieee80211_local *local = wiphy_priv(wiphy); drv_rfkill_poll(local); } #ifdef CONFIG_NL80211_TESTMODE static int ieee80211_testmode_cmd(struct wiphy *wiphy, struct wireless_dev *wdev, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_vif *vif = NULL; if (!local->ops->testmode_cmd) return -EOPNOTSUPP; if (wdev) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) vif = &sdata->vif; } return local->ops->testmode_cmd(&local->hw, vif, data, len); } static int ieee80211_testmode_dump(struct wiphy *wiphy, struct sk_buff *skb, struct netlink_callback *cb, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->testmode_dump) return -EOPNOTSUPP; return local->ops->testmode_dump(&local->hw, skb, cb, data, len); } #endif int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, enum ieee80211_smps_mode smps_mode) { const u8 *ap; enum ieee80211_smps_mode old_req; int err; struct sta_info *sta; bool tdls_peer_found = false; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) return -EINVAL; if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) return 0; old_req = link->u.mgd.req_smps; link->u.mgd.req_smps = smps_mode; /* The driver indicated that EML is enabled for the interface, which * implies that SMPS flows towards the AP should be stopped. */ if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) return 0; if (old_req == smps_mode && smps_mode != IEEE80211_SMPS_AUTOMATIC) return 0; /* * If not associated, or current association is not an HT * association, there's no need to do anything, just store * the new value until we associate. */ if (!sdata->u.mgd.associated || link->conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT) return 0; ap = sdata->vif.cfg.ap_addr; rcu_read_lock(); list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) continue; tdls_peer_found = true; break; } rcu_read_unlock(); if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { if (tdls_peer_found || !sdata->u.mgd.powersave) smps_mode = IEEE80211_SMPS_OFF; else smps_mode = IEEE80211_SMPS_DYNAMIC; } /* send SM PS frame to AP */ err = ieee80211_send_smps_action(sdata, smps_mode, ap, ap, ieee80211_vif_is_mld(&sdata->vif) ? link->link_id : -1); if (err) link->u.mgd.req_smps = old_req; else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) ieee80211_teardown_tdls_peers(link); return err; } static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, bool enabled, int timeout) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); unsigned int link_id; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) return -EOPNOTSUPP; if (enabled == sdata->u.mgd.powersave && timeout == local->dynamic_ps_forced_timeout) return 0; sdata->u.mgd.powersave = enabled; local->dynamic_ps_forced_timeout = timeout; /* no change, but if automatic follow powersave */ for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { struct ieee80211_link_data *link; link = sdata_dereference(sdata->link[link_id], sdata); if (!link) continue; __ieee80211_request_smps_mgd(sdata, link, link->u.mgd.req_smps); } if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS); ieee80211_recalc_ps(local); ieee80211_recalc_ps_vif(sdata); ieee80211_check_fast_rx_iface(sdata); return 0; } static void ieee80211_set_cqm_rssi_link(struct ieee80211_sub_if_data *sdata, struct ieee80211_link_data *link, s32 rssi_thold, u32 rssi_hyst, s32 rssi_low, s32 rssi_high) { struct ieee80211_bss_conf *conf; if (!link || !link->conf) return; conf = link->conf; if (rssi_thold && rssi_hyst && rssi_thold == conf->cqm_rssi_thold && rssi_hyst == conf->cqm_rssi_hyst) return; conf->cqm_rssi_thold = rssi_thold; conf->cqm_rssi_hyst = rssi_hyst; conf->cqm_rssi_low = rssi_low; conf->cqm_rssi_high = rssi_high; link->u.mgd.last_cqm_event_signal = 0; if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) return; if (sdata->u.mgd.associated && (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_CQM); } static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_thold, u32 rssi_hyst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_vif *vif = &sdata->vif; int link_id; if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER && !(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) return -EOPNOTSUPP; /* For MLD, handle CQM change on all the active links */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_set_cqm_rssi_link(sdata, link, rssi_thold, rssi_hyst, 0, 0); } return 0; } static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_low, s32 rssi_high) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_vif *vif = &sdata->vif; int link_id; if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER) return -EOPNOTSUPP; /* For MLD, handle CQM change on all the active links */ for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { struct ieee80211_link_data *link = sdata_dereference(sdata->link[link_id], sdata); ieee80211_set_cqm_rssi_link(sdata, link, 0, 0, rssi_low, rssi_high); } return 0; } static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id, const u8 *addr, const struct cfg80211_bitrate_mask *mask) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int i, ret; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; /* * If active validate the setting and reject it if it doesn't leave * at least one basic rate usable, since we really have to be able * to send something, and if we're an AP we have to be able to do * so at a basic rate so that all clients can receive it. */ if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) && sdata->vif.bss_conf.chanreq.oper.chan) { u32 basic_rates = sdata->vif.bss_conf.basic_rates; enum nl80211_band band; band = sdata->vif.bss_conf.chanreq.oper.chan->band; if (!(mask->control[band].legacy & basic_rates)) return -EINVAL; } if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { ret = drv_set_bitrate_mask(local, sdata, mask); if (ret) return ret; } for (i = 0; i < NUM_NL80211_BANDS; i++) { struct ieee80211_supported_band *sband = wiphy->bands[i]; int j; sdata->rc_rateidx_mask[i] = mask->control[i].legacy; memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, sizeof(mask->control[i].ht_mcs)); memcpy(sdata->rc_rateidx_vht_mcs_mask[i], mask->control[i].vht_mcs, sizeof(mask->control[i].vht_mcs)); sdata->rc_has_mcs_mask[i] = false; sdata->rc_has_vht_mcs_mask[i] = false; if (!sband) continue; for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) { sdata->rc_has_mcs_mask[i] = true; break; } } for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) { sdata->rc_has_vht_mcs_mask[i] = true; break; } } } return 0; } static bool ieee80211_is_scan_ongoing(struct wiphy *wiphy, struct ieee80211_local *local, struct cfg80211_chan_def *chandef) { struct cfg80211_scan_request *scan_req; int chan_radio_idx, req_radio_idx; struct ieee80211_roc_work *roc; if (list_empty(&local->roc_list) && !local->scanning) return false; req_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chandef->chan); if (local->scanning) { scan_req = wiphy_dereference(wiphy, local->scan_req); /* * Scan is going on but info is not there. Should not happen * but if it does, let's not take risk and assume we can't use * the hw hence return true */ if (WARN_ON_ONCE(!scan_req)) return true; return ieee80211_is_radio_idx_in_scan_req(wiphy, scan_req, req_radio_idx); } list_for_each_entry(roc, &local->roc_list, list) { chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, roc->chan); if (chan_radio_idx == req_radio_idx) return true; } return false; } static int ieee80211_start_radar_detection(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_chan_def *chandef, u32 cac_time_ms, int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = *chandef }; struct ieee80211_local *local = sdata->local; struct ieee80211_link_data *link_data; int err; lockdep_assert_wiphy(local->hw.wiphy); if (ieee80211_is_scan_ongoing(wiphy, local, chandef)) return -EBUSY; link_data = sdata_dereference(sdata->link[link_id], sdata); if (!link_data) return -ENOLINK; /* whatever, but channel contexts should not complain about that one */ link_data->smps_mode = IEEE80211_SMPS_OFF; link_data->needed_rx_chains = local->rx_chains; err = ieee80211_link_use_channel(link_data, &chanreq, IEEE80211_CHANCTX_SHARED); if (err) return err; wiphy_hrtimer_work_queue(wiphy, &link_data->dfs_cac_timer_work, ms_to_ktime(cac_time_ms)); return 0; } static void ieee80211_end_cac(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_link_data *link_data; lockdep_assert_wiphy(local->hw.wiphy); list_for_each_entry(sdata, &local->interfaces, list) { link_data = sdata_dereference(sdata->link[link_id], sdata); if (!link_data) continue; wiphy_hrtimer_work_cancel(wiphy, &link_data->dfs_cac_timer_work); if (sdata->wdev.links[link_id].cac_started) { ieee80211_link_release_channel(link_data); sdata->wdev.links[link_id].cac_started = false; } } } static struct cfg80211_beacon_data * cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) { struct cfg80211_beacon_data *new_beacon; u8 *pos; int len; len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + beacon->proberesp_ies_len + beacon->assocresp_ies_len + beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len; if (beacon->mbssid_ies) len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies, beacon->rnr_ies, beacon->mbssid_ies->cnt); new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); if (!new_beacon) return NULL; if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) { new_beacon->mbssid_ies = kzalloc_flex(*new_beacon->mbssid_ies, elem, beacon->mbssid_ies->cnt); if (!new_beacon->mbssid_ies) { kfree(new_beacon); return NULL; } if (beacon->rnr_ies && beacon->rnr_ies->cnt) { new_beacon->rnr_ies = kzalloc_flex(*new_beacon->rnr_ies, elem, beacon->rnr_ies->cnt); if (!new_beacon->rnr_ies) { kfree(new_beacon->mbssid_ies); kfree(new_beacon); return NULL; } } } pos = (u8 *)(new_beacon + 1); if (beacon->head_len) { new_beacon->head_len = beacon->head_len; new_beacon->head = pos; memcpy(pos, beacon->head, beacon->head_len); pos += beacon->head_len; } if (beacon->tail_len) { new_beacon->tail_len = beacon->tail_len; new_beacon->tail = pos; memcpy(pos, beacon->tail, beacon->tail_len); pos += beacon->tail_len; } if (beacon->beacon_ies_len) { new_beacon->beacon_ies_len = beacon->beacon_ies_len; new_beacon->beacon_ies = pos; memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); pos += beacon->beacon_ies_len; } if (beacon->proberesp_ies_len) { new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; new_beacon->proberesp_ies = pos; memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); pos += beacon->proberesp_ies_len; } if (beacon->assocresp_ies_len) { new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; new_beacon->assocresp_ies = pos; memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); pos += beacon->assocresp_ies_len; } if (beacon->probe_resp_len) { new_beacon->probe_resp_len = beacon->probe_resp_len; new_beacon->probe_resp = pos; memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); pos += beacon->probe_resp_len; } if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) { pos += ieee80211_copy_mbssid_beacon(pos, new_beacon->mbssid_ies, beacon->mbssid_ies); if (beacon->rnr_ies && beacon->rnr_ies->cnt) pos += ieee80211_copy_rnr_beacon(pos, new_beacon->rnr_ies, beacon->rnr_ies); } /* might copy -1, meaning no changes requested */ new_beacon->ftm_responder = beacon->ftm_responder; if (beacon->lci) { new_beacon->lci_len = beacon->lci_len; new_beacon->lci = pos; memcpy(pos, beacon->lci, beacon->lci_len); pos += beacon->lci_len; } if (beacon->civicloc) { new_beacon->civicloc_len = beacon->civicloc_len; new_beacon->civicloc = pos; memcpy(pos, beacon->civicloc, beacon->civicloc_len); pos += beacon->civicloc_len; } return new_beacon; } void ieee80211_csa_finish(struct ieee80211_vif *vif, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_local *local = sdata->local; struct ieee80211_bss_conf *tx_bss_conf; struct ieee80211_link_data *link_data; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link_data = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link_data)) { rcu_read_unlock(); return; } tx_bss_conf = rcu_dereference(link_data->conf->tx_bss_conf); if (tx_bss_conf == link_data->conf) { /* Trigger ieee80211_csa_finish() on the non-transmitting * interfaces when channel switch is received on * transmitting interface */ struct ieee80211_link_data *iter; for_each_sdata_link_rcu(local, iter) { if (iter->sdata == sdata || rcu_access_pointer(iter->conf->tx_bss_conf) != tx_bss_conf) continue; wiphy_work_queue(iter->sdata->local->hw.wiphy, &iter->csa.finalize_work); } } wiphy_work_queue(local->hw.wiphy, &link_data->csa.finalize_work); rcu_read_unlock(); } EXPORT_SYMBOL(ieee80211_csa_finish); void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = sdata->local; sdata_info(sdata, "channel switch failed, disconnecting\n"); wiphy_work_queue(local->hw.wiphy, &ifmgd->csa_connection_drop_work); } EXPORT_SYMBOL(ieee80211_channel_switch_disconnect); static int ieee80211_set_after_csa_beacon(struct ieee80211_link_data *link_data, u64 *changed) { struct ieee80211_sub_if_data *sdata = link_data->sdata; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: if (!link_data->u.ap.next_beacon) return -EINVAL; err = ieee80211_assign_beacon(sdata, link_data, link_data->u.ap.next_beacon, NULL, NULL, changed); ieee80211_free_next_beacon(link_data); if (err < 0) return err; break; case NL80211_IFTYPE_ADHOC: err = ieee80211_ibss_finish_csa(sdata, changed); if (err < 0) return err; break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: err = ieee80211_mesh_finish_csa(sdata, changed); if (err < 0) return err; break; #endif default: WARN_ON(1); return -EINVAL; } return 0; } static int __ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { struct ieee80211_sub_if_data *sdata = link_data->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_bss_conf *link_conf = link_data->conf; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); /* * using reservation isn't immediate as it may be deferred until later * with multi-vif. once reservation is complete it will re-schedule the * work with no reserved_chanctx so verify chandef to check if it * completed successfully */ if (link_data->reserved_chanctx) { /* * with multi-vif csa driver may call ieee80211_csa_finish() * many times while waiting for other interfaces to use their * reservations */ if (link_data->reserved_ready) return 0; return ieee80211_link_use_reserved_context(link_data); } if (!cfg80211_chandef_identical(&link_conf->chanreq.oper, &link_data->csa.chanreq.oper)) return -EINVAL; link_conf->csa_active = false; err = ieee80211_set_after_csa_beacon(link_data, &changed); if (err) return err; ieee80211_link_info_change_notify(sdata, link_data, changed); ieee80211_vif_unblock_queues_csa(sdata); err = drv_post_channel_switch(link_data); if (err) return err; cfg80211_ch_switch_notify(sdata->dev, &link_data->csa.chanreq.oper, link_data->link_id); return 0; } static void ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { struct ieee80211_sub_if_data *sdata = link_data->sdata; int link_id = -1; if (__ieee80211_csa_finalize(link_data)) { sdata_info(sdata, "failed to finalize CSA on link %d, disconnecting\n", link_data->link_id); if (sdata->vif.type == NL80211_IFTYPE_AP || sdata->vif.type == NL80211_IFTYPE_P2P_GO) /* * link_id is expected only for AP/P2P_GO type * currently */ link_id = link_data->link_id; cfg80211_stop_link(sdata->local->hw.wiphy, &sdata->wdev, link_id, GFP_KERNEL); } } void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, csa.finalize_work); struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ if (!link->conf->csa_active) return; if (!ieee80211_sdata_running(sdata)) return; ieee80211_csa_finalize(link); } static int ieee80211_set_csa_beacon(struct ieee80211_link_data *link_data, struct cfg80211_csa_settings *params, u64 *changed) { struct ieee80211_sub_if_data *sdata = link_data->sdata; struct ieee80211_csa_settings csa = {}; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: link_data->u.ap.next_beacon = cfg80211_beacon_dup(¶ms->beacon_after); if (!link_data->u.ap.next_beacon) return -ENOMEM; /* * With a count of 0, we don't have to wait for any * TBTT before switching, so complete the CSA * immediately. In theory, with a count == 1 we * should delay the switch until just before the next * TBTT, but that would complicate things so we switch * immediately too. If we would delay the switch * until the next TBTT, we would have to set the probe * response here. * * TODO: A channel switch with count <= 1 without * sending a CSA action frame is kind of useless, * because the clients won't know we're changing * channels. The action frame must be implemented * either here or in the userspace. */ if (params->count <= 1) break; if ((params->n_counter_offsets_beacon > IEEE80211_MAX_CNTDWN_COUNTERS_NUM) || (params->n_counter_offsets_presp > IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) { ieee80211_free_next_beacon(link_data); return -EINVAL; } csa.counter_offsets_beacon = params->counter_offsets_beacon; csa.counter_offsets_presp = params->counter_offsets_presp; csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; csa.n_counter_offsets_presp = params->n_counter_offsets_presp; csa.count = params->count; err = ieee80211_assign_beacon(sdata, link_data, ¶ms->beacon_csa, &csa, NULL, changed); if (err < 0) { ieee80211_free_next_beacon(link_data); return err; } break; case NL80211_IFTYPE_ADHOC: if (!sdata->vif.cfg.ibss_joined) return -EINVAL; if (params->chandef.width != sdata->u.ibss.chandef.width) return -EINVAL; switch (params->chandef.width) { case NL80211_CHAN_WIDTH_40: if (cfg80211_get_chandef_type(¶ms->chandef) != cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) return -EINVAL; break; case NL80211_CHAN_WIDTH_5: case NL80211_CHAN_WIDTH_10: case NL80211_CHAN_WIDTH_20_NOHT: case NL80211_CHAN_WIDTH_20: break; default: return -EINVAL; } /* changes into another band are not supported */ if (sdata->u.ibss.chandef.chan->band != params->chandef.chan->band) return -EINVAL; /* see comments in the NL80211_IFTYPE_AP block */ if (params->count > 1) { err = ieee80211_ibss_csa_beacon(sdata, params, changed); if (err < 0) return err; } ieee80211_send_action_csa(sdata, params); break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: { struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; /* changes into another band are not supported */ if (sdata->vif.bss_conf.chanreq.oper.chan->band != params->chandef.chan->band) return -EINVAL; if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; if (!ifmsh->pre_value) ifmsh->pre_value = 1; else ifmsh->pre_value++; } /* see comments in the NL80211_IFTYPE_AP block */ if (params->count > 1) { err = ieee80211_mesh_csa_beacon(sdata, params, changed); if (err < 0) { ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; return err; } } if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) ieee80211_send_action_csa(sdata, params); break; } #endif default: return -EOPNOTSUPP; } return 0; } static void ieee80211_color_change_abort(struct ieee80211_link_data *link) { link->conf->color_change_active = false; ieee80211_free_next_beacon(link); cfg80211_color_change_aborted_notify(link->sdata->dev, link->link_id); } static int __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_csa_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_chan_req chanreq = { .oper = params->chandef }; struct ieee80211_local *local = sdata->local; struct ieee80211_channel_switch ch_switch = { .link_id = params->link_id, }; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *chanctx; struct ieee80211_bss_conf *link_conf; struct ieee80211_link_data *link_data; u64 changed = 0; u8 link_id = params->link_id; int err; lockdep_assert_wiphy(local->hw.wiphy); if (ieee80211_is_scan_ongoing(wiphy, local, ¶ms->chandef)) return -EBUSY; if (sdata->wdev.links[link_id].cac_started) return -EBUSY; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return -EINVAL; link_data = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link_data) return -ENOLINK; link_conf = link_data->conf; if (chanreq.oper.punctured && !link_conf->eht_support) return -EINVAL; /* don't allow another channel switch if one is already active. */ if (link_conf->csa_active) return -EBUSY; conf = wiphy_dereference(wiphy, link_conf->chanctx_conf); if (!conf) { err = -EBUSY; goto out; } if (params->chandef.chan->freq_offset) { /* this may work, but is untested */ err = -EOPNOTSUPP; goto out; } err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link_data, link_conf, &changed); if (err) goto out; chanctx = container_of(conf, struct ieee80211_chanctx, conf); ch_switch.timestamp = 0; ch_switch.device_timestamp = 0; ch_switch.block_tx = params->block_tx; ch_switch.chandef = chanreq.oper; ch_switch.count = params->count; err = drv_pre_channel_switch(sdata, &ch_switch); if (err) goto out; err = ieee80211_link_reserve_chanctx(link_data, &chanreq, chanctx->mode, params->radar_required); if (err) goto out; /* if reservation is invalid then this will fail */ err = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (err) { ieee80211_link_unreserve_chanctx(link_data); goto out; } /* if there is a color change in progress, abort it */ if (link_conf->color_change_active) ieee80211_color_change_abort(link_data); err = ieee80211_set_csa_beacon(link_data, params, &changed); if (err) { ieee80211_link_unreserve_chanctx(link_data); goto out; } link_data->csa.chanreq = chanreq; link_conf->csa_active = true; if (params->block_tx) ieee80211_vif_block_queues_csa(sdata); cfg80211_ch_switch_started_notify(sdata->dev, &link_data->csa.chanreq.oper, link_id, params->count, params->block_tx); if (changed) { ieee80211_link_info_change_notify(sdata, link_data, changed); drv_channel_switch_beacon(sdata, &link_data->csa.chanreq.oper); } else { /* if the beacon didn't change, we can finalize immediately */ ieee80211_csa_finalize(link_data); } out: return err; } int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_csa_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); return __ieee80211_channel_switch(wiphy, dev, params); } u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) { lockdep_assert_wiphy(local->hw.wiphy); local->roc_cookie_counter++; /* wow, you wrapped 64 bits ... more likely a bug */ if (WARN_ON(local->roc_cookie_counter == 0)) local->roc_cookie_counter++; return local->roc_cookie_counter; } int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, u64 *cookie, gfp_t gfp) { unsigned long spin_flags; struct sk_buff *ack_skb; int id; ack_skb = skb_copy(skb, gfp); if (!ack_skb) return -ENOMEM; spin_lock_irqsave(&local->ack_status_lock, spin_flags); id = idr_alloc(&local->ack_status_frames, ack_skb, 1, 0x2000, GFP_ATOMIC); spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); if (id < 0) { kfree_skb(ack_skb); return -ENOMEM; } IEEE80211_SKB_CB(skb)->status_data_idr = 1; IEEE80211_SKB_CB(skb)->status_data = id; *cookie = ieee80211_mgmt_tx_cookie(local); IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; return 0; } static void ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy, struct wireless_dev *wdev, struct mgmt_frame_regs *upd) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4); u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4); bool global_change, intf_change; global_change = (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) || (local->rx_mcast_action_reg != !!(upd->global_mcast_stypes & action_mask)); local->probe_req_reg = upd->global_stypes & preq_mask; local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask; intf_change = (sdata->vif.probe_req_reg != !!(upd->interface_stypes & preq_mask)) || (sdata->vif.rx_mcast_action_reg != !!(upd->interface_mcast_stypes & action_mask)); sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask; sdata->vif.rx_mcast_action_reg = upd->interface_mcast_stypes & action_mask; if (!local->open_count) return; if (intf_change && ieee80211_sdata_running(sdata)) drv_config_iface_filter(local, sdata, sdata->vif.probe_req_reg ? FIF_PROBE_REQ : 0, FIF_PROBE_REQ); if (global_change) ieee80211_configure_filter(local); } static int ieee80211_set_antenna(struct wiphy *wiphy, int radio_idx, u32 tx_ant, u32 rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); int ret; if (local->started) return -EOPNOTSUPP; ret = drv_set_antenna(local, tx_ant, rx_ant); if (ret) return ret; local->rx_chains = hweight8(rx_ant); return 0; } static int ieee80211_get_antenna(struct wiphy *wiphy, int radio_idx, u32 *tx_ant, u32 *rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); return drv_get_antenna(local, radio_idx, tx_ant, rx_ant); } static int ieee80211_set_rekey_data(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_gtk_rekey_data *data) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!local->ops->set_rekey_data) return -EOPNOTSUPP; drv_set_rekey_data(local, sdata, data); return 0; } static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, const u8 *peer, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_qos_hdr *nullfunc; struct sk_buff *skb; int size = sizeof(*nullfunc); __le16 fc; bool qos; struct ieee80211_tx_info *info; struct sta_info *sta; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_bss_conf *conf; enum nl80211_band band; u8 link_id; int ret; /* the lock is needed to assign the cookie later */ lockdep_assert_wiphy(local->hw.wiphy); rcu_read_lock(); sta = sta_info_get_bss(sdata, peer); if (!sta) { ret = -ENOLINK; goto unlock; } qos = sta->sta.wme; if (ieee80211_vif_is_mld(&sdata->vif)) { if (sta->sta.mlo) { link_id = IEEE80211_LINK_UNSPECIFIED; } else { /* * For non-MLO clients connected to an AP MLD, band * information is not used; instead, sta->deflink is * used to send packets. */ link_id = sta->deflink.link_id; conf = rcu_dereference(sdata->vif.link_conf[link_id]); if (unlikely(!conf)) { ret = -ENOLINK; goto unlock; } } /* MLD transmissions must not rely on the band */ band = 0; } else { chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); if (WARN_ON(!chanctx_conf)) { ret = -EINVAL; goto unlock; } band = chanctx_conf->def.chan->band; link_id = 0; } if (qos) { fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC | IEEE80211_FCTL_FROMDS); } else { size -= 2; fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_FROMDS); } skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); if (!skb) { ret = -ENOMEM; goto unlock; } skb->dev = dev; skb_reserve(skb, local->hw.extra_tx_headroom); nullfunc = skb_put(skb, size); nullfunc->frame_control = fc; nullfunc->duration_id = 0; memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); if (ieee80211_vif_is_mld(&sdata->vif) && !sta->sta.mlo) { memcpy(nullfunc->addr2, conf->addr, ETH_ALEN); memcpy(nullfunc->addr3, conf->addr, ETH_ALEN); } else { memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); } nullfunc->seq_ctrl = 0; info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | IEEE80211_TX_INTFL_NL80211_FRAME_TX; info->band = band; info->control.flags |= u32_encode_bits(link_id, IEEE80211_TX_CTRL_MLO_LINK); skb_set_queue_mapping(skb, IEEE80211_AC_VO); skb->priority = 7; if (qos) nullfunc->qos_ctrl = cpu_to_le16(7); ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); if (ret) { kfree_skb(skb); goto unlock; } local_bh_disable(); ieee80211_xmit(sdata, sta, skb); local_bh_enable(); ret = 0; unlock: rcu_read_unlock(); return ret; } static int ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id, struct cfg80211_chan_def *chandef) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_link_data *link; int ret = -ENODATA; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (!link) { ret = -ENOLINK; goto out; } chanctx_conf = rcu_dereference(link->conf->chanctx_conf); if (chanctx_conf) { *chandef = link->conf->chanreq.oper; ret = 0; } else if (local->open_count > 0 && local->open_count == local->virt_monitors && sdata->vif.type == NL80211_IFTYPE_MONITOR) { *chandef = local->monitor_chanreq.oper; ret = 0; } out: rcu_read_unlock(); return ret; } #ifdef CONFIG_PM static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) { drv_set_wakeup(wiphy_priv(wiphy), enabled); } #endif static int ieee80211_set_qos_map(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_qos_map *qos_map) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct mac80211_qos_map *new_qos_map, *old_qos_map; if (qos_map) { new_qos_map = kzalloc_obj(*new_qos_map); if (!new_qos_map) return -ENOMEM; memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); } else { /* A NULL qos_map was passed to disable QoS mapping */ new_qos_map = NULL; } old_qos_map = sdata_dereference(sdata->qos_map, sdata); rcu_assign_pointer(sdata->qos_map, new_qos_map); if (old_qos_map) kfree_rcu(old_qos_map, rcu_head); return 0; } static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, struct net_device *dev, unsigned int link_id, struct cfg80211_chan_def *chandef) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_link_data *link; struct ieee80211_chan_req chanreq = { .oper = *chandef }; int ret; u64 changed = 0; link = sdata_dereference(sdata->link[link_id], sdata); ret = ieee80211_link_change_chanreq(link, &chanreq, &changed); if (ret == 0) ieee80211_link_info_change_notify(sdata, link, changed); return ret; } static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, u8 tsid, const u8 *peer, u8 up, u16 admitted_time) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; int ac = ieee802_1d_to_ac[up]; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!(sdata->wmm_acm & BIT(up))) return -EINVAL; if (ifmgd->tx_tspec[ac].admitted_time) return -EBUSY; if (admitted_time) { ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; ifmgd->tx_tspec[ac].tsid = tsid; ifmgd->tx_tspec[ac].up = up; } return 0; } static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, u8 tsid, const u8 *peer) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; struct ieee80211_local *local = wiphy_priv(wiphy); int ac; for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; /* skip unused entries */ if (!tx_tspec->admitted_time) continue; if (tx_tspec->tsid != tsid) continue; /* due to this new packets will be reassigned to non-ACM ACs */ tx_tspec->up = -1; /* Make sure that all packets have been sent to avoid to * restore the QoS params on packets that are still on the * queues. */ synchronize_net(); ieee80211_flush_queues(local, sdata, false); /* restore the normal QoS parameters * (unconditionally to avoid races) */ tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; tx_tspec->downgraded = false; ieee80211_sta_handle_tspec_ac_params(sdata); /* finally clear all the data */ memset(tx_tspec, 0, sizeof(*tx_tspec)); return 0; } return -ENOENT; } void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, u8 inst_id, enum nl80211_nan_func_term_reason reason, gfp_t gfp) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct cfg80211_nan_func *func; u64 cookie; if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) return; if (WARN_ON(sdata->local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) return; spin_lock_bh(&sdata->u.nan.de.func_lock); func = idr_find(&sdata->u.nan.de.function_inst_ids, inst_id); if (WARN_ON(!func)) { spin_unlock_bh(&sdata->u.nan.de.func_lock); return; } cookie = func->cookie; idr_remove(&sdata->u.nan.de.function_inst_ids, inst_id); spin_unlock_bh(&sdata->u.nan.de.func_lock); cfg80211_free_nan_func(func); cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id, reason, cookie, gfp); } EXPORT_SYMBOL(ieee80211_nan_func_terminated); void ieee80211_nan_func_match(struct ieee80211_vif *vif, struct cfg80211_nan_match_params *match, gfp_t gfp) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct cfg80211_nan_func *func; if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) return; if (WARN_ON(sdata->local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE)) return; spin_lock_bh(&sdata->u.nan.de.func_lock); func = idr_find(&sdata->u.nan.de.function_inst_ids, match->inst_id); if (WARN_ON(!func)) { spin_unlock_bh(&sdata->u.nan.de.func_lock); return; } match->cookie = func->cookie; spin_unlock_bh(&sdata->u.nan.de.func_lock); cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp); } EXPORT_SYMBOL(ieee80211_nan_func_match); static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy, struct net_device *dev, const bool enabled) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->u.ap.multicast_to_unicast = enabled; return 0; } void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, struct txq_info *txqi) { if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES); txqstats->backlog_bytes = txqi->tin.backlog_bytes; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS); txqstats->backlog_packets = txqi->tin.backlog_packets; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS); txqstats->flows = txqi->tin.flows; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS); txqstats->drops = txqi->cstats.drop_count; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS); txqstats->ecn_marks = txqi->cstats.ecn_mark; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT); txqstats->overlimit = txqi->tin.overlimit; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS); txqstats->collisions = txqi->tin.collisions; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES); txqstats->tx_bytes = txqi->tin.tx_bytes; } if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) { txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS); txqstats->tx_packets = txqi->tin.tx_packets; } } static int ieee80211_get_txq_stats(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_txq_stats *txqstats) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; int ret = 0; spin_lock_bh(&local->fq.lock); if (wdev) { sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); if (!sdata->vif.txq) { ret = 1; goto out; } ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq)); } else { /* phy stats */ txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) | BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) | BIT(NL80211_TXQ_STATS_OVERLIMIT) | BIT(NL80211_TXQ_STATS_OVERMEMORY) | BIT(NL80211_TXQ_STATS_COLLISIONS) | BIT(NL80211_TXQ_STATS_MAX_FLOWS); txqstats->backlog_packets = local->fq.backlog; txqstats->backlog_bytes = local->fq.memory_usage; txqstats->overlimit = local->fq.overlimit; txqstats->overmemory = local->fq.overmemory; txqstats->collisions = local->fq.collisions; txqstats->max_flows = local->fq.flows_cnt; } out: spin_unlock_bh(&local->fq.lock); return ret; } static int ieee80211_get_ftm_responder_stats(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ftm_responder_stats *ftm_stats) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return drv_get_ftm_responder_stats(local, sdata, ftm_stats); } static int ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, struct cfg80211_pmsr_request *request) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); return drv_start_pmsr(local, sdata, request); } static void ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, struct cfg80211_pmsr_request *request) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); return drv_abort_pmsr(local, sdata, request); } static int ieee80211_set_tid_config(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_tid_config *tid_conf) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (!sdata->local->ops->set_tid_config) return -EOPNOTSUPP; if (!tid_conf->peer) return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf); sta = sta_info_get_bss(sdata, tid_conf->peer); if (!sta) return -ENOENT; return drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf); } static int ieee80211_reset_tid_config(struct wiphy *wiphy, struct net_device *dev, const u8 *peer, u8 tids) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); if (!sdata->local->ops->reset_tid_config) return -EOPNOTSUPP; if (!peer) return drv_reset_tid_config(sdata->local, sdata, NULL, tids); sta = sta_info_get_bss(sdata, peer); if (!sta) return -ENOENT; return drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids); } static int ieee80211_set_sar_specs(struct wiphy *wiphy, struct cfg80211_sar_specs *sar) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->set_sar_specs) return -EOPNOTSUPP; return local->ops->set_sar_specs(&local->hw, sar); } static int ieee80211_set_after_color_change_beacon(struct ieee80211_link_data *link, u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: { int ret; if (!link->u.ap.next_beacon) return -EINVAL; ret = ieee80211_assign_beacon(sdata, link, link->u.ap.next_beacon, NULL, NULL, changed); ieee80211_free_next_beacon(link); if (ret < 0) return ret; break; } default: WARN_ON_ONCE(1); return -EINVAL; } return 0; } static int ieee80211_set_color_change_beacon(struct ieee80211_link_data *link, struct cfg80211_color_change_settings *params, u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_color_change_settings color_change = {}; int err; switch (sdata->vif.type) { case NL80211_IFTYPE_AP: link->u.ap.next_beacon = cfg80211_beacon_dup(¶ms->beacon_next); if (!link->u.ap.next_beacon) return -ENOMEM; if (params->count <= 1) break; color_change.counter_offset_beacon = params->counter_offset_beacon; color_change.counter_offset_presp = params->counter_offset_presp; color_change.count = params->count; err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon_color_change, NULL, &color_change, changed); if (err < 0) { ieee80211_free_next_beacon(link); return err; } break; default: return -EOPNOTSUPP; } return 0; } static void ieee80211_color_change_bss_config_notify(struct ieee80211_link_data *link, u8 color, int enable, u64 changed) { struct ieee80211_sub_if_data *sdata = link->sdata; lockdep_assert_wiphy(sdata->local->hw.wiphy); link->conf->he_bss_color.color = color; link->conf->he_bss_color.enabled = enable; changed |= BSS_CHANGED_HE_BSS_COLOR; ieee80211_link_info_change_notify(sdata, link, changed); if (!link->conf->nontransmitted && rcu_access_pointer(link->conf->tx_bss_conf)) { struct ieee80211_link_data *tmp; for_each_sdata_link(sdata->local, tmp) { if (tmp->sdata == sdata || rcu_access_pointer(tmp->conf->tx_bss_conf) != link->conf) continue; tmp->conf->he_bss_color.color = color; tmp->conf->he_bss_color.enabled = enable; ieee80211_link_info_change_notify(tmp->sdata, tmp, BSS_CHANGED_HE_BSS_COLOR); } } } static int ieee80211_color_change_finalize(struct ieee80211_link_data *link) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); link->conf->color_change_active = false; err = ieee80211_set_after_color_change_beacon(link, &changed); if (err) { cfg80211_color_change_aborted_notify(sdata->dev, link->link_id); return err; } ieee80211_color_change_bss_config_notify(link, link->conf->color_change_color, 1, changed); cfg80211_color_change_notify(sdata->dev, link->link_id); return 0; } void ieee80211_color_change_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, color_change_finalize_work); struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ if (!link_conf->color_change_active) return; if (!ieee80211_sdata_running(sdata)) return; ieee80211_color_change_finalize(link); } void ieee80211_color_collision_detection_work(struct wiphy *wiphy, struct wiphy_work *work) { struct ieee80211_link_data *link = container_of(work, struct ieee80211_link_data, color_collision_detect_work.work); struct ieee80211_sub_if_data *sdata = link->sdata; cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap, link->link_id); } void ieee80211_color_change_finish(struct ieee80211_vif *vif, u8 link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_link_data *link; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link)) { rcu_read_unlock(); return; } wiphy_work_queue(sdata->local->hw.wiphy, &link->color_change_finalize_work); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(ieee80211_color_change_finish); void ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif, u64 color_bitmap, u8 link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_link_data *link; if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return; rcu_read_lock(); link = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link)) { rcu_read_unlock(); return; } if (link->conf->color_change_active || link->conf->csa_active) { rcu_read_unlock(); return; } if (wiphy_delayed_work_pending(sdata->local->hw.wiphy, &link->color_collision_detect_work)) { rcu_read_unlock(); return; } link->color_bitmap = color_bitmap; /* queue the color collision detection event every 500 ms in order to * avoid sending too much netlink messages to userspace. */ wiphy_delayed_work_queue(sdata->local->hw.wiphy, &link->color_collision_detect_work, msecs_to_jiffies(500)); rcu_read_unlock(); } EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify); static int ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_color_change_settings *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_bss_conf *link_conf; struct ieee80211_link_data *link; u8 link_id = params->link_id; u64 changed = 0; int err; lockdep_assert_wiphy(local->hw.wiphy); if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) return -EINVAL; link = wiphy_dereference(wiphy, sdata->link[link_id]); if (!link) return -ENOLINK; link_conf = link->conf; if (link_conf->nontransmitted) return -EINVAL; /* don't allow another color change if one is already active or if csa * is active */ if (link_conf->color_change_active || link_conf->csa_active) { err = -EBUSY; goto out; } err = ieee80211_set_unsol_bcast_probe_resp(sdata, ¶ms->unsol_bcast_probe_resp, link, link_conf, &changed); if (err) goto out; err = ieee80211_set_color_change_beacon(link, params, &changed); if (err) goto out; link_conf->color_change_active = true; link_conf->color_change_color = params->color; cfg80211_color_change_started_notify(sdata->dev, params->count, link_id); if (changed) ieee80211_color_change_bss_config_notify(link, 0, 0, changed); else /* if the beacon didn't change, we can finalize immediately */ ieee80211_color_change_finalize(link); out: return err; } static int ieee80211_set_radar_background(struct wiphy *wiphy, struct cfg80211_chan_def *chandef) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->set_radar_background) return -EOPNOTSUPP; return local->ops->set_radar_background(&local->hw, chandef); } static int ieee80211_add_intf_link(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_vif_set_links(sdata, wdev->valid_links, 0); } static void ieee80211_del_intf_link(struct wiphy *wiphy, struct wireless_dev *wdev, unsigned int link_id) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); u16 new_links = wdev->valid_links & ~BIT(link_id); lockdep_assert_wiphy(sdata->local->hw.wiphy); /* During the link teardown process, certain functions require the * link_id to remain in the valid_links bitmap. Therefore, instead * of removing the link_id from the bitmap, pass a masked value to * simulate as if link_id does not exist anymore. */ ieee80211_vif_set_links(sdata, new_links, 0); } static int ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; int ret; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!sta->sta.valid_links) return -EINVAL; if (sta->sta.valid_links & BIT(params->link_id)) return -EALREADY; ret = ieee80211_sta_allocate_link(sta, params->link_id); if (ret) return ret; ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_NEW, params); if (ret) { ieee80211_sta_free_link(sta, params->link_id); return ret; } if (test_sta_flag(sta, WLAN_STA_ASSOC)) { struct link_sta_info *link_sta; link_sta = sdata_dereference(sta->link[params->link_id], sdata); rate_control_rate_init(link_sta); } /* ieee80211_sta_activate_link frees the link upon failure */ return ieee80211_sta_activate_link(sta, params->link_id); } static int ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; lockdep_assert_wiphy(local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!(sta->sta.valid_links & BIT(params->link_id))) return -EINVAL; return sta_link_apply_parameters(local, sta, STA_LINK_MODE_LINK_MODIFY, params); } static int ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev, struct link_station_del_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; lockdep_assert_wiphy(sdata->local->hw.wiphy); sta = sta_info_get_bss(sdata, params->mld_mac); if (!sta) return -ENOENT; if (!(sta->sta.valid_links & BIT(params->link_id))) return -EINVAL; /* must not create a STA without links */ if (sta->sta.valid_links == BIT(params->link_id)) return -EINVAL; ieee80211_sta_remove_link(sta, params->link_id); return 0; } static int ieee80211_set_hw_timestamp(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_set_hw_timestamp *hwts) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; if (!local->ops->set_hw_timestamp) return -EOPNOTSUPP; if (!check_sdata_in_driver(sdata)) return -EIO; return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts); } static int ieee80211_set_ttlm(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ttlm_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_req_neg_ttlm(sdata, params); } static int ieee80211_assoc_ml_reconf(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ml_reconf_req *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_mgd_assoc_ml_reconf(sdata, req); } static int ieee80211_set_epcs(struct wiphy *wiphy, struct net_device *dev, bool enable) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return ieee80211_mgd_set_epcs(sdata, enable); } static int ieee80211_set_local_nan_sched(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_local_sched *sched) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); lockdep_assert_wiphy(wiphy); return ieee80211_nan_set_local_sched(sdata, sched); } static int ieee80211_set_peer_nan_sched(struct wiphy *wiphy, struct wireless_dev *wdev, struct cfg80211_nan_peer_sched *sched) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); lockdep_assert_wiphy(sdata->local->hw.wiphy); return ieee80211_nan_set_peer_sched(sdata, sched); } const struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, .change_virtual_intf = ieee80211_change_iface, .start_p2p_device = ieee80211_start_p2p_device, .stop_p2p_device = ieee80211_stop_p2p_device, .add_key = ieee80211_add_key, .del_key = ieee80211_del_key, .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, .set_default_beacon_key = ieee80211_config_default_beacon_key, .start_ap = ieee80211_start_ap, .change_beacon = ieee80211_change_beacon, .stop_ap = ieee80211_stop_ap, .add_station = ieee80211_add_station, .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, .get_station = ieee80211_get_station, .dump_station = ieee80211_dump_station, .dump_survey = ieee80211_dump_survey, #ifdef CONFIG_MAC80211_MESH .add_mpath = ieee80211_add_mpath, .del_mpath = ieee80211_del_mpath, .change_mpath = ieee80211_change_mpath, .get_mpath = ieee80211_get_mpath, .dump_mpath = ieee80211_dump_mpath, .get_mpp = ieee80211_get_mpp, .dump_mpp = ieee80211_dump_mpp, .update_mesh_config = ieee80211_update_mesh_config, .get_mesh_config = ieee80211_get_mesh_config, .join_mesh = ieee80211_join_mesh, .leave_mesh = ieee80211_leave_mesh, #endif .join_ocb = ieee80211_join_ocb, .leave_ocb = ieee80211_leave_ocb, .change_bss = ieee80211_change_bss, .inform_bss = ieee80211_inform_bss, .set_txq_params = ieee80211_set_txq_params, .set_monitor_channel = ieee80211_set_monitor_channel, .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, .abort_scan = ieee80211_abort_scan, .sched_scan_start = ieee80211_sched_scan_start, .sched_scan_stop = ieee80211_sched_scan_stop, .auth = ieee80211_auth, .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, .disassoc = ieee80211_disassoc, .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, .set_mcast_rate = ieee80211_set_mcast_rate, .set_wiphy_params = ieee80211_set_wiphy_params, .set_tx_power = ieee80211_set_tx_power, .get_tx_power = ieee80211_get_tx_power, .rfkill_poll = ieee80211_rfkill_poll, CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) .set_power_mgmt = ieee80211_set_power_mgmt, .set_bitrate_mask = ieee80211_set_bitrate_mask, .remain_on_channel = ieee80211_remain_on_channel, .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, .mgmt_tx = ieee80211_mgmt_tx, .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, .update_mgmt_frame_registrations = ieee80211_update_mgmt_frame_registrations, .set_antenna = ieee80211_set_antenna, .get_antenna = ieee80211_get_antenna, .set_rekey_data = ieee80211_set_rekey_data, .tdls_oper = ieee80211_tdls_oper, .tdls_mgmt = ieee80211_tdls_mgmt, .tdls_channel_switch = ieee80211_tdls_channel_switch, .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, .probe_client = ieee80211_probe_client, .set_noack_map = ieee80211_set_noack_map, #ifdef CONFIG_PM .set_wakeup = ieee80211_set_wakeup, #endif .get_channel = ieee80211_cfg_get_channel, .start_radar_detection = ieee80211_start_radar_detection, .end_cac = ieee80211_end_cac, .channel_switch = ieee80211_channel_switch, .set_qos_map = ieee80211_set_qos_map, .set_ap_chanwidth = ieee80211_set_ap_chanwidth, .add_tx_ts = ieee80211_add_tx_ts, .del_tx_ts = ieee80211_del_tx_ts, .start_nan = ieee80211_start_nan, .stop_nan = ieee80211_stop_nan, .nan_change_conf = ieee80211_nan_change_conf, .add_nan_func = ieee80211_add_nan_func, .del_nan_func = ieee80211_del_nan_func, .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, .tx_control_port = ieee80211_tx_control_port, .get_txq_stats = ieee80211_get_txq_stats, .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats, .start_pmsr = ieee80211_start_pmsr, .abort_pmsr = ieee80211_abort_pmsr, .probe_mesh_link = ieee80211_probe_mesh_link, .set_tid_config = ieee80211_set_tid_config, .reset_tid_config = ieee80211_reset_tid_config, .set_sar_specs = ieee80211_set_sar_specs, .color_change = ieee80211_color_change, .set_radar_background = ieee80211_set_radar_background, .add_intf_link = ieee80211_add_intf_link, .del_intf_link = ieee80211_del_intf_link, .add_link_station = ieee80211_add_link_station, .mod_link_station = ieee80211_mod_link_station, .del_link_station = ieee80211_del_link_station, .set_hw_timestamp = ieee80211_set_hw_timestamp, .set_ttlm = ieee80211_set_ttlm, .get_radio_mask = ieee80211_get_radio_mask, .assoc_ml_reconf = ieee80211_assoc_ml_reconf, .set_epcs = ieee80211_set_epcs, .nan_set_local_sched = ieee80211_set_local_nan_sched, .nan_set_peer_sched = ieee80211_set_peer_nan_sched, }; |
| 9 9 9 9 9 9 9 9 8 9 9 9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: utdebug - Debug print/trace routines * * Copyright (C) 2000 - 2025, Intel Corp. * *****************************************************************************/ #define EXPORT_ACPI_INTERFACES #include <acpi/acpi.h> #include "accommon.h" #include "acinterp.h" #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utdebug") #ifdef ACPI_DEBUG_OUTPUT static acpi_thread_id acpi_gbl_previous_thread_id = (acpi_thread_id) 0xFFFFFFFF; static const char *acpi_gbl_function_entry_prefix = "----Entry"; static const char *acpi_gbl_function_exit_prefix = "----Exit-"; /******************************************************************************* * * FUNCTION: acpi_ut_init_stack_ptr_trace * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Save the current CPU stack pointer at subsystem startup * ******************************************************************************/ void acpi_ut_init_stack_ptr_trace(void) { acpi_size current_sp; #pragma GCC diagnostic push #if defined(__GNUC__) && __GNUC__ >= 12 #pragma GCC diagnostic ignored "-Wdangling-pointer=" #endif acpi_gbl_entry_stack_pointer = ¤t_sp; #pragma GCC diagnostic pop } /******************************************************************************* * * FUNCTION: acpi_ut_track_stack_ptr * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Save the current CPU stack pointer * ******************************************************************************/ void acpi_ut_track_stack_ptr(void) { acpi_size current_sp; if (¤t_sp < acpi_gbl_lowest_stack_pointer) { #pragma GCC diagnostic push #if defined(__GNUC__) && __GNUC__ >= 12 #pragma GCC diagnostic ignored "-Wdangling-pointer=" #endif acpi_gbl_lowest_stack_pointer = ¤t_sp; #pragma GCC diagnostic pop } if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) { acpi_gbl_deepest_nesting = acpi_gbl_nesting_level; } } /******************************************************************************* * * FUNCTION: acpi_ut_trim_function_name * * PARAMETERS: function_name - Ascii string containing a procedure name * * RETURN: Updated pointer to the function name * * DESCRIPTION: Remove the "Acpi" prefix from the function name, if present. * This allows compiler macros such as __func__ to be used * with no change to the debug output. * ******************************************************************************/ static const char *acpi_ut_trim_function_name(const char *function_name) { /* All Function names are longer than 4 chars, check is safe */ if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_MIXED) { /* This is the case where the original source has not been modified */ return (function_name + 4); } if (*(ACPI_CAST_PTR(u32, function_name)) == ACPI_PREFIX_LOWER) { /* This is the case where the source has been 'linuxized' */ return (function_name + 5); } return (function_name); } /******************************************************************************* * * FUNCTION: acpi_debug_print * * PARAMETERS: requested_debug_level - Requested debug print level * line_number - Caller's line number (for error output) * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * format - Printf format field * ... - Optional printf arguments * * RETURN: None * * DESCRIPTION: Print error message with prefix consisting of the module name, * line number, and component ID. * ******************************************************************************/ void ACPI_INTERNAL_VAR_XFACE acpi_debug_print(u32 requested_debug_level, u32 line_number, const char *function_name, const char *module_name, u32 component_id, const char *format, ...) { acpi_thread_id thread_id; va_list args; #ifdef ACPI_APPLICATION int fill_count; #endif /* Check if debug output enabled */ if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) { return; } /* * Thread tracking and context switch notification */ thread_id = acpi_os_get_thread_id(); if (thread_id != acpi_gbl_previous_thread_id) { if (ACPI_LV_THREADS & acpi_dbg_level) { acpi_os_printf ("\n**** Context Switch from TID %u to TID %u ****\n\n", (u32)acpi_gbl_previous_thread_id, (u32)thread_id); } acpi_gbl_previous_thread_id = thread_id; acpi_gbl_nesting_level = 0; } /* * Display the module name, current line number, thread ID (if requested), * current procedure nesting level, and the current procedure name */ acpi_os_printf("%9s-%04d ", module_name, line_number); #ifdef ACPI_APPLICATION /* * For acpi_exec/iASL only, emit the thread ID and nesting level. * Note: nesting level is really only useful during a single-thread * execution. Otherwise, multiple threads will keep resetting the * level. */ if (ACPI_LV_THREADS & acpi_dbg_level) { acpi_os_printf("[%u] ", (u32)thread_id); } fill_count = 48 - acpi_gbl_nesting_level - strlen(acpi_ut_trim_function_name(function_name)); if (fill_count < 0) { fill_count = 0; } acpi_os_printf("[%02d] %*s", acpi_gbl_nesting_level, acpi_gbl_nesting_level + 1, " "); acpi_os_printf("%s%*s: ", acpi_ut_trim_function_name(function_name), fill_count, " "); #else acpi_os_printf("%-22.22s: ", acpi_ut_trim_function_name(function_name)); #endif va_start(args, format); acpi_os_vprintf(format, args); va_end(args); } ACPI_EXPORT_SYMBOL(acpi_debug_print) /******************************************************************************* * * FUNCTION: acpi_debug_print_raw * * PARAMETERS: requested_debug_level - Requested debug print level * line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * format - Printf format field * ... - Optional printf arguments * * RETURN: None * * DESCRIPTION: Print message with no headers. Has same interface as * debug_print so that the same macros can be used. * ******************************************************************************/ void ACPI_INTERNAL_VAR_XFACE acpi_debug_print_raw(u32 requested_debug_level, u32 line_number, const char *function_name, const char *module_name, u32 component_id, const char *format, ...) { va_list args; /* Check if debug output enabled */ if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) { return; } va_start(args, format); acpi_os_vprintf(format, args); va_end(args); } ACPI_EXPORT_SYMBOL(acpi_debug_print_raw) /******************************************************************************* * * FUNCTION: acpi_ut_trace * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * * RETURN: None * * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level * ******************************************************************************/ void acpi_ut_trace(u32 line_number, const char *function_name, const char *module_name, u32 component_id) { acpi_gbl_nesting_level++; acpi_ut_track_stack_ptr(); /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s\n", acpi_gbl_function_entry_prefix); } } ACPI_EXPORT_SYMBOL(acpi_ut_trace) /******************************************************************************* * * FUNCTION: acpi_ut_trace_ptr * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * pointer - Pointer to display * * RETURN: None * * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level * ******************************************************************************/ void acpi_ut_trace_ptr(u32 line_number, const char *function_name, const char *module_name, u32 component_id, const void *pointer) { acpi_gbl_nesting_level++; acpi_ut_track_stack_ptr(); /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %p\n", acpi_gbl_function_entry_prefix, pointer); } } /******************************************************************************* * * FUNCTION: acpi_ut_trace_str * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * string - Additional string to display * * RETURN: None * * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level * ******************************************************************************/ void acpi_ut_trace_str(u32 line_number, const char *function_name, const char *module_name, u32 component_id, const char *string) { acpi_gbl_nesting_level++; acpi_ut_track_stack_ptr(); /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %s\n", acpi_gbl_function_entry_prefix, string); } } /******************************************************************************* * * FUNCTION: acpi_ut_trace_u32 * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * integer - Integer to display * * RETURN: None * * DESCRIPTION: Function entry trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level * ******************************************************************************/ void acpi_ut_trace_u32(u32 line_number, const char *function_name, const char *module_name, u32 component_id, u32 integer) { acpi_gbl_nesting_level++; acpi_ut_track_stack_ptr(); /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %08X\n", acpi_gbl_function_entry_prefix, integer); } } /******************************************************************************* * * FUNCTION: acpi_ut_exit * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * * RETURN: None * * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level * ******************************************************************************/ void acpi_ut_exit(u32 line_number, const char *function_name, const char *module_name, u32 component_id) { /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s\n", acpi_gbl_function_exit_prefix); } if (acpi_gbl_nesting_level) { acpi_gbl_nesting_level--; } } ACPI_EXPORT_SYMBOL(acpi_ut_exit) /******************************************************************************* * * FUNCTION: acpi_ut_status_exit * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * status - Exit status code * * RETURN: None * * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level. Prints exit status also. * ******************************************************************************/ void acpi_ut_status_exit(u32 line_number, const char *function_name, const char *module_name, u32 component_id, acpi_status status) { /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { if (ACPI_SUCCESS(status)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %s\n", acpi_gbl_function_exit_prefix, acpi_format_exception(status)); } else { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s ****Exception****: %s\n", acpi_gbl_function_exit_prefix, acpi_format_exception(status)); } } if (acpi_gbl_nesting_level) { acpi_gbl_nesting_level--; } } ACPI_EXPORT_SYMBOL(acpi_ut_status_exit) /******************************************************************************* * * FUNCTION: acpi_ut_value_exit * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * value - Value to be printed with exit msg * * RETURN: None * * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level. Prints exit value also. * ******************************************************************************/ void acpi_ut_value_exit(u32 line_number, const char *function_name, const char *module_name, u32 component_id, u64 value) { /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %8.8X%8.8X\n", acpi_gbl_function_exit_prefix, ACPI_FORMAT_UINT64(value)); } if (acpi_gbl_nesting_level) { acpi_gbl_nesting_level--; } } ACPI_EXPORT_SYMBOL(acpi_ut_value_exit) /******************************************************************************* * * FUNCTION: acpi_ut_ptr_exit * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * ptr - Pointer to display * * RETURN: None * * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level. Prints exit value also. * ******************************************************************************/ void acpi_ut_ptr_exit(u32 line_number, const char *function_name, const char *module_name, u32 component_id, u8 *ptr) { /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %p\n", acpi_gbl_function_exit_prefix, ptr); } if (acpi_gbl_nesting_level) { acpi_gbl_nesting_level--; } } /******************************************************************************* * * FUNCTION: acpi_ut_str_exit * * PARAMETERS: line_number - Caller's line number * function_name - Caller's procedure name * module_name - Caller's module name * component_id - Caller's component ID * string - String to display * * RETURN: None * * DESCRIPTION: Function exit trace. Prints only if TRACE_FUNCTIONS bit is * set in debug_level. Prints exit value also. * ******************************************************************************/ void acpi_ut_str_exit(u32 line_number, const char *function_name, const char *module_name, u32 component_id, const char *string) { /* Check if enabled up-front for performance */ if (ACPI_IS_DEBUG_ENABLED(ACPI_LV_FUNCTIONS, component_id)) { acpi_debug_print(ACPI_LV_FUNCTIONS, line_number, function_name, module_name, component_id, "%s %s\n", acpi_gbl_function_exit_prefix, string); } if (acpi_gbl_nesting_level) { acpi_gbl_nesting_level--; } } /******************************************************************************* * * FUNCTION: acpi_trace_point * * PARAMETERS: type - Trace event type * begin - TRUE if before execution * aml - Executed AML address * pathname - Object path * pointer - Pointer to the related object * * RETURN: None * * DESCRIPTION: Interpreter execution trace. * ******************************************************************************/ void acpi_trace_point(acpi_trace_event_type type, u8 begin, u8 *aml, char *pathname) { ACPI_FUNCTION_ENTRY(); acpi_ex_trace_point(type, begin, aml, pathname); #ifdef ACPI_USE_SYSTEM_TRACER acpi_os_trace_point(type, begin, aml, pathname); #endif } ACPI_EXPORT_SYMBOL(acpi_trace_point) #endif |
| 5 5 5 5 6 1 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | /* * net/tipc/diag.c: TIPC socket diag * * Copyright (c) 2018, Ericsson AB * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "core.h" #include "socket.h" #include <linux/sock_diag.h> #include <linux/tipc_sockets_diag.h> static u64 __tipc_diag_gen_cookie(struct sock *sk) { u32 res[2]; sock_diag_save_cookie(sk, res); return *((u64 *)res); } static int __tipc_add_sock_diag(struct sk_buff *skb, struct netlink_callback *cb, struct tipc_sock *tsk) { struct tipc_sock_diag_req *req = nlmsg_data(cb->nlh); struct nlmsghdr *nlh; int err; nlh = nlmsg_put_answer(skb, cb, SOCK_DIAG_BY_FAMILY, 0, NLM_F_MULTI); if (!nlh) return -EMSGSIZE; err = tipc_sk_fill_sock_diag(skb, cb, tsk, req->tidiag_states, __tipc_diag_gen_cookie); if (err) return err; nlmsg_end(skb, nlh); return 0; } static int tipc_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) { return tipc_nl_sk_walk(skb, cb, __tipc_add_sock_diag); } static int tipc_sock_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h) { int hdrlen = sizeof(struct tipc_sock_diag_req); struct net *net = sock_net(skb->sk); if (nlmsg_len(h) < hdrlen) return -EINVAL; if (h->nlmsg_flags & NLM_F_DUMP) { struct netlink_dump_control c = { .start = tipc_dump_start, .dump = tipc_diag_dump, .done = tipc_dump_done, }; netlink_dump_start(net->diag_nlsk, skb, h, &c); return 0; } return -EOPNOTSUPP; } static const struct sock_diag_handler tipc_sock_diag_handler = { .owner = THIS_MODULE, .family = AF_TIPC, .dump = tipc_sock_diag_handler_dump, }; static int __init tipc_diag_init(void) { return sock_diag_register(&tipc_sock_diag_handler); } static void __exit tipc_diag_exit(void) { sock_diag_unregister(&tipc_sock_diag_handler); } module_init(tipc_diag_init); module_exit(tipc_diag_exit); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("TIPC socket monitoring via SOCK_DIAG"); MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, AF_TIPC); |
| 34 34 14 3 11 14 14 1 1 14 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | // SPDX-License-Identifier: GPL-2.0-or-later /* * OSS compatible sequencer driver * * seq_oss_writeq.c - write queue and sync * * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> */ #include "seq_oss_writeq.h" #include "seq_oss_event.h" #include "seq_oss_timer.h" #include <sound/seq_oss_legacy.h> #include "../seq_lock.h" #include "../seq_clientmgr.h" #include <linux/wait.h> #include <linux/slab.h> #include <linux/sched/signal.h> /* * create a write queue record */ struct seq_oss_writeq * snd_seq_oss_writeq_new(struct seq_oss_devinfo *dp, int maxlen) { struct seq_oss_writeq *q; struct snd_seq_client_pool pool; q = kzalloc_obj(*q); if (!q) return NULL; q->dp = dp; q->maxlen = maxlen; spin_lock_init(&q->sync_lock); q->sync_event_put = 0; q->sync_time = 0; init_waitqueue_head(&q->sync_sleep); memset(&pool, 0, sizeof(pool)); pool.client = dp->cseq; pool.output_pool = maxlen; pool.output_room = maxlen / 2; snd_seq_oss_control(dp, SNDRV_SEQ_IOCTL_SET_CLIENT_POOL, &pool); return q; } /* * delete the write queue */ void snd_seq_oss_writeq_delete(struct seq_oss_writeq *q) { if (q) { snd_seq_oss_writeq_clear(q); /* to be sure */ kfree(q); } } /* * reset the write queue */ void snd_seq_oss_writeq_clear(struct seq_oss_writeq *q) { struct snd_seq_remove_events reset; memset(&reset, 0, sizeof(reset)); reset.remove_mode = SNDRV_SEQ_REMOVE_OUTPUT; /* remove all */ snd_seq_oss_control(q->dp, SNDRV_SEQ_IOCTL_REMOVE_EVENTS, &reset); /* wake up sleepers if any */ snd_seq_oss_writeq_wakeup(q, 0); } /* * wait until the write buffer has enough room */ int snd_seq_oss_writeq_sync(struct seq_oss_writeq *q) { struct seq_oss_devinfo *dp = q->dp; abstime_t time; time = snd_seq_oss_timer_cur_tick(dp->timer); if (q->sync_time >= time) return 0; /* already finished */ if (! q->sync_event_put) { struct snd_seq_event ev; union evrec *rec; /* put echoback event */ memset(&ev, 0, sizeof(ev)); ev.flags = 0; ev.type = SNDRV_SEQ_EVENT_ECHO; ev.time.tick = time; /* echo back to itself */ snd_seq_oss_fill_addr(dp, &ev, dp->addr.client, dp->addr.port); rec = (union evrec *)&ev.data; rec->t.code = SEQ_SYNCTIMER; rec->t.time = time; q->sync_event_put = 1; snd_seq_kernel_client_enqueue(dp->cseq, &ev, NULL, true); } wait_event_interruptible_timeout(q->sync_sleep, ! q->sync_event_put, HZ); if (signal_pending(current)) /* interrupted - return 0 to finish sync */ q->sync_event_put = 0; if (! q->sync_event_put || q->sync_time >= time) return 0; return 1; } /* * wake up sync - echo event was catched */ void snd_seq_oss_writeq_wakeup(struct seq_oss_writeq *q, abstime_t time) { guard(spinlock_irqsave)(&q->sync_lock); q->sync_time = time; q->sync_event_put = 0; wake_up(&q->sync_sleep); } /* * return the unused pool size */ int snd_seq_oss_writeq_get_free_size(struct seq_oss_writeq *q) { struct snd_seq_client_pool pool; pool.client = q->dp->cseq; snd_seq_oss_control(q->dp, SNDRV_SEQ_IOCTL_GET_CLIENT_POOL, &pool); return pool.output_free; } /* * set output threshold size from ioctl */ void snd_seq_oss_writeq_set_output(struct seq_oss_writeq *q, int val) { struct snd_seq_client_pool pool; pool.client = q->dp->cseq; snd_seq_oss_control(q->dp, SNDRV_SEQ_IOCTL_GET_CLIENT_POOL, &pool); pool.output_room = val; snd_seq_oss_control(q->dp, SNDRV_SEQ_IOCTL_SET_CLIENT_POOL, &pool); } |
| 10 10 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | // SPDX-License-Identifier: GPL-2.0 /* xfrm_hash.c: Common hash table code. * * Copyright (C) 2006 David S. Miller (davem@davemloft.net) */ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/memblock.h> #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/xfrm.h> #include "xfrm_hash.h" struct hlist_head *xfrm_hash_alloc(unsigned int sz) { struct hlist_head *n; if (sz <= PAGE_SIZE) n = kzalloc(sz, GFP_KERNEL); else if (hashdist) n = vzalloc(sz); else n = (struct hlist_head *) __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, get_order(sz)); return n; } void xfrm_hash_free(struct hlist_head *n, unsigned int sz) { if (sz <= PAGE_SIZE) kfree(n); else if (hashdist) vfree(n); else free_pages((unsigned long)n, get_order(sz)); } |
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930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 | // SPDX-License-Identifier: GPL-2.0 /* * security/tomoyo/file.c * * Copyright (C) 2005-2011 NTT DATA CORPORATION */ #include "common.h" #include <linux/slab.h> /* * Mapping table from "enum tomoyo_path_acl_index" to "enum tomoyo_mac_index". */ static const u8 tomoyo_p2mac[TOMOYO_MAX_PATH_OPERATION] = { [TOMOYO_TYPE_EXECUTE] = TOMOYO_MAC_FILE_EXECUTE, [TOMOYO_TYPE_READ] = TOMOYO_MAC_FILE_OPEN, [TOMOYO_TYPE_WRITE] = TOMOYO_MAC_FILE_OPEN, [TOMOYO_TYPE_APPEND] = TOMOYO_MAC_FILE_OPEN, [TOMOYO_TYPE_UNLINK] = TOMOYO_MAC_FILE_UNLINK, [TOMOYO_TYPE_GETATTR] = TOMOYO_MAC_FILE_GETATTR, [TOMOYO_TYPE_RMDIR] = TOMOYO_MAC_FILE_RMDIR, [TOMOYO_TYPE_TRUNCATE] = TOMOYO_MAC_FILE_TRUNCATE, [TOMOYO_TYPE_SYMLINK] = TOMOYO_MAC_FILE_SYMLINK, [TOMOYO_TYPE_CHROOT] = TOMOYO_MAC_FILE_CHROOT, [TOMOYO_TYPE_UMOUNT] = TOMOYO_MAC_FILE_UMOUNT, }; /* * Mapping table from "enum tomoyo_mkdev_acl_index" to "enum tomoyo_mac_index". */ const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = { [TOMOYO_TYPE_MKBLOCK] = TOMOYO_MAC_FILE_MKBLOCK, [TOMOYO_TYPE_MKCHAR] = TOMOYO_MAC_FILE_MKCHAR, }; /* * Mapping table from "enum tomoyo_path2_acl_index" to "enum tomoyo_mac_index". */ const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION] = { [TOMOYO_TYPE_LINK] = TOMOYO_MAC_FILE_LINK, [TOMOYO_TYPE_RENAME] = TOMOYO_MAC_FILE_RENAME, [TOMOYO_TYPE_PIVOT_ROOT] = TOMOYO_MAC_FILE_PIVOT_ROOT, }; /* * Mapping table from "enum tomoyo_path_number_acl_index" to * "enum tomoyo_mac_index". */ const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION] = { [TOMOYO_TYPE_CREATE] = TOMOYO_MAC_FILE_CREATE, [TOMOYO_TYPE_MKDIR] = TOMOYO_MAC_FILE_MKDIR, [TOMOYO_TYPE_MKFIFO] = TOMOYO_MAC_FILE_MKFIFO, [TOMOYO_TYPE_MKSOCK] = TOMOYO_MAC_FILE_MKSOCK, [TOMOYO_TYPE_IOCTL] = TOMOYO_MAC_FILE_IOCTL, [TOMOYO_TYPE_CHMOD] = TOMOYO_MAC_FILE_CHMOD, [TOMOYO_TYPE_CHOWN] = TOMOYO_MAC_FILE_CHOWN, [TOMOYO_TYPE_CHGRP] = TOMOYO_MAC_FILE_CHGRP, }; /** * tomoyo_put_name_union - Drop reference on "struct tomoyo_name_union". * * @ptr: Pointer to "struct tomoyo_name_union". * * Returns nothing. */ void tomoyo_put_name_union(struct tomoyo_name_union *ptr) { tomoyo_put_group(ptr->group); tomoyo_put_name(ptr->filename); } /** * tomoyo_compare_name_union - Check whether a name matches "struct tomoyo_name_union" or not. * * @name: Pointer to "struct tomoyo_path_info". * @ptr: Pointer to "struct tomoyo_name_union". * * Returns "struct tomoyo_path_info" if @name matches @ptr, NULL otherwise. */ const struct tomoyo_path_info * tomoyo_compare_name_union(const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr) { if (ptr->group) return tomoyo_path_matches_group(name, ptr->group); if (tomoyo_path_matches_pattern(name, ptr->filename)) return ptr->filename; return NULL; } /** * tomoyo_put_number_union - Drop reference on "struct tomoyo_number_union". * * @ptr: Pointer to "struct tomoyo_number_union". * * Returns nothing. */ void tomoyo_put_number_union(struct tomoyo_number_union *ptr) { tomoyo_put_group(ptr->group); } /** * tomoyo_compare_number_union - Check whether a value matches "struct tomoyo_number_union" or not. * * @value: Number to check. * @ptr: Pointer to "struct tomoyo_number_union". * * Returns true if @value matches @ptr, false otherwise. */ bool tomoyo_compare_number_union(const unsigned long value, const struct tomoyo_number_union *ptr) { if (ptr->group) return tomoyo_number_matches_group(value, value, ptr->group); return value >= ptr->values[0] && value <= ptr->values[1]; } /** * tomoyo_add_slash - Add trailing '/' if needed. * * @buf: Pointer to "struct tomoyo_path_info". * * Returns nothing. * * @buf must be generated by tomoyo_encode() because this function does not * allocate memory for adding '/'. */ static void tomoyo_add_slash(struct tomoyo_path_info *buf) { if (buf->is_dir) return; /* * This is OK because tomoyo_encode() reserves space for appending "/". */ strcat((char *) buf->name, "/"); tomoyo_fill_path_info(buf); } /** * tomoyo_get_realpath - Get realpath. * * @buf: Pointer to "struct tomoyo_path_info". * @path: Pointer to "struct path". * * Returns true on success, false otherwise. */ static bool tomoyo_get_realpath(struct tomoyo_path_info *buf, const struct path *path) { buf->name = tomoyo_realpath_from_path(path); if (buf->name) { tomoyo_fill_path_info(buf); return true; } return false; } /** * tomoyo_audit_path_log - Audit path request log. * * @r: Pointer to "struct tomoyo_request_info". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_audit_path_log(struct tomoyo_request_info *r) __must_hold_shared(&tomoyo_ss) { return tomoyo_supervisor(r, "file %s %s\n", tomoyo_path_keyword [r->param.path.operation], r->param.path.filename->name); } /** * tomoyo_audit_path2_log - Audit path/path request log. * * @r: Pointer to "struct tomoyo_request_info". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_audit_path2_log(struct tomoyo_request_info *r) __must_hold_shared(&tomoyo_ss) { return tomoyo_supervisor(r, "file %s %s %s\n", tomoyo_mac_keywords [tomoyo_pp2mac[r->param.path2.operation]], r->param.path2.filename1->name, r->param.path2.filename2->name); } /** * tomoyo_audit_mkdev_log - Audit path/number/number/number request log. * * @r: Pointer to "struct tomoyo_request_info". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_audit_mkdev_log(struct tomoyo_request_info *r) __must_hold_shared(&tomoyo_ss) { return tomoyo_supervisor(r, "file %s %s 0%o %u %u\n", tomoyo_mac_keywords [tomoyo_pnnn2mac[r->param.mkdev.operation]], r->param.mkdev.filename->name, r->param.mkdev.mode, r->param.mkdev.major, r->param.mkdev.minor); } /** * tomoyo_audit_path_number_log - Audit path/number request log. * * @r: Pointer to "struct tomoyo_request_info". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_audit_path_number_log(struct tomoyo_request_info *r) __must_hold_shared(&tomoyo_ss) { const u8 type = r->param.path_number.operation; u8 radix; char buffer[64]; switch (type) { case TOMOYO_TYPE_CREATE: case TOMOYO_TYPE_MKDIR: case TOMOYO_TYPE_MKFIFO: case TOMOYO_TYPE_MKSOCK: case TOMOYO_TYPE_CHMOD: radix = TOMOYO_VALUE_TYPE_OCTAL; break; case TOMOYO_TYPE_IOCTL: radix = TOMOYO_VALUE_TYPE_HEXADECIMAL; break; default: radix = TOMOYO_VALUE_TYPE_DECIMAL; break; } tomoyo_print_ulong(buffer, sizeof(buffer), r->param.path_number.number, radix); return tomoyo_supervisor(r, "file %s %s %s\n", tomoyo_mac_keywords [tomoyo_pn2mac[type]], r->param.path_number.filename->name, buffer); } /** * tomoyo_check_path_acl - Check permission for path operation. * * @r: Pointer to "struct tomoyo_request_info". * @ptr: Pointer to "struct tomoyo_acl_info". * * Returns true if granted, false otherwise. * * To be able to use wildcard for domain transition, this function sets * matching entry on success. Since the caller holds tomoyo_read_lock(), * it is safe to set matching entry. */ static bool tomoyo_check_path_acl(struct tomoyo_request_info *r, const struct tomoyo_acl_info *ptr) { const struct tomoyo_path_acl *acl = container_of(ptr, typeof(*acl), head); if (acl->perm & (1 << r->param.path.operation)) { r->param.path.matched_path = tomoyo_compare_name_union(r->param.path.filename, &acl->name); return r->param.path.matched_path != NULL; } return false; } /** * tomoyo_check_path_number_acl - Check permission for path number operation. * * @r: Pointer to "struct tomoyo_request_info". * @ptr: Pointer to "struct tomoyo_acl_info". * * Returns true if granted, false otherwise. */ static bool tomoyo_check_path_number_acl(struct tomoyo_request_info *r, const struct tomoyo_acl_info *ptr) { const struct tomoyo_path_number_acl *acl = container_of(ptr, typeof(*acl), head); return (acl->perm & (1 << r->param.path_number.operation)) && tomoyo_compare_number_union(r->param.path_number.number, &acl->number) && tomoyo_compare_name_union(r->param.path_number.filename, &acl->name); } /** * tomoyo_check_path2_acl - Check permission for path path operation. * * @r: Pointer to "struct tomoyo_request_info". * @ptr: Pointer to "struct tomoyo_acl_info". * * Returns true if granted, false otherwise. */ static bool tomoyo_check_path2_acl(struct tomoyo_request_info *r, const struct tomoyo_acl_info *ptr) { const struct tomoyo_path2_acl *acl = container_of(ptr, typeof(*acl), head); return (acl->perm & (1 << r->param.path2.operation)) && tomoyo_compare_name_union(r->param.path2.filename1, &acl->name1) && tomoyo_compare_name_union(r->param.path2.filename2, &acl->name2); } /** * tomoyo_check_mkdev_acl - Check permission for path number number number operation. * * @r: Pointer to "struct tomoyo_request_info". * @ptr: Pointer to "struct tomoyo_acl_info". * * Returns true if granted, false otherwise. */ static bool tomoyo_check_mkdev_acl(struct tomoyo_request_info *r, const struct tomoyo_acl_info *ptr) { const struct tomoyo_mkdev_acl *acl = container_of(ptr, typeof(*acl), head); return (acl->perm & (1 << r->param.mkdev.operation)) && tomoyo_compare_number_union(r->param.mkdev.mode, &acl->mode) && tomoyo_compare_number_union(r->param.mkdev.major, &acl->major) && tomoyo_compare_number_union(r->param.mkdev.minor, &acl->minor) && tomoyo_compare_name_union(r->param.mkdev.filename, &acl->name); } /** * tomoyo_same_path_acl - Check for duplicated "struct tomoyo_path_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b except permission bits, false otherwise. */ static bool tomoyo_same_path_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_path_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_path_acl *p2 = container_of(b, typeof(*p2), head); return tomoyo_same_name_union(&p1->name, &p2->name); } /** * tomoyo_merge_path_acl - Merge duplicated "struct tomoyo_path_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * @is_delete: True for @a &= ~@b, false for @a |= @b. * * Returns true if @a is empty, false otherwise. */ static bool tomoyo_merge_path_acl(struct tomoyo_acl_info *a, struct tomoyo_acl_info *b, const bool is_delete) { u16 * const a_perm = &container_of(a, struct tomoyo_path_acl, head) ->perm; u16 perm = READ_ONCE(*a_perm); const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm; if (is_delete) perm &= ~b_perm; else perm |= b_perm; WRITE_ONCE(*a_perm, perm); return !perm; } /** * tomoyo_update_path_acl - Update "struct tomoyo_path_acl" list. * * @perm: Permission. * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_update_path_acl(const u16 perm, struct tomoyo_acl_param *param) { struct tomoyo_path_acl e = { .head.type = TOMOYO_TYPE_PATH_ACL, .perm = perm }; int error; if (!tomoyo_parse_name_union(param, &e.name)) error = -EINVAL; else error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_path_acl, tomoyo_merge_path_acl); tomoyo_put_name_union(&e.name); return error; } /** * tomoyo_same_mkdev_acl - Check for duplicated "struct tomoyo_mkdev_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b except permission bits, false otherwise. */ static bool tomoyo_same_mkdev_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_mkdev_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_mkdev_acl *p2 = container_of(b, typeof(*p2), head); return tomoyo_same_name_union(&p1->name, &p2->name) && tomoyo_same_number_union(&p1->mode, &p2->mode) && tomoyo_same_number_union(&p1->major, &p2->major) && tomoyo_same_number_union(&p1->minor, &p2->minor); } /** * tomoyo_merge_mkdev_acl - Merge duplicated "struct tomoyo_mkdev_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * @is_delete: True for @a &= ~@b, false for @a |= @b. * * Returns true if @a is empty, false otherwise. */ static bool tomoyo_merge_mkdev_acl(struct tomoyo_acl_info *a, struct tomoyo_acl_info *b, const bool is_delete) { u8 *const a_perm = &container_of(a, struct tomoyo_mkdev_acl, head)->perm; u8 perm = READ_ONCE(*a_perm); const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head) ->perm; if (is_delete) perm &= ~b_perm; else perm |= b_perm; WRITE_ONCE(*a_perm, perm); return !perm; } /** * tomoyo_update_mkdev_acl - Update "struct tomoyo_mkdev_acl" list. * * @perm: Permission. * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_update_mkdev_acl(const u8 perm, struct tomoyo_acl_param *param) { struct tomoyo_mkdev_acl e = { .head.type = TOMOYO_TYPE_MKDEV_ACL, .perm = perm }; int error; if (!tomoyo_parse_name_union(param, &e.name) || !tomoyo_parse_number_union(param, &e.mode) || !tomoyo_parse_number_union(param, &e.major) || !tomoyo_parse_number_union(param, &e.minor)) error = -EINVAL; else error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_mkdev_acl, tomoyo_merge_mkdev_acl); tomoyo_put_name_union(&e.name); tomoyo_put_number_union(&e.mode); tomoyo_put_number_union(&e.major); tomoyo_put_number_union(&e.minor); return error; } /** * tomoyo_same_path2_acl - Check for duplicated "struct tomoyo_path2_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b except permission bits, false otherwise. */ static bool tomoyo_same_path2_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_path2_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_path2_acl *p2 = container_of(b, typeof(*p2), head); return tomoyo_same_name_union(&p1->name1, &p2->name1) && tomoyo_same_name_union(&p1->name2, &p2->name2); } /** * tomoyo_merge_path2_acl - Merge duplicated "struct tomoyo_path2_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * @is_delete: True for @a &= ~@b, false for @a |= @b. * * Returns true if @a is empty, false otherwise. */ static bool tomoyo_merge_path2_acl(struct tomoyo_acl_info *a, struct tomoyo_acl_info *b, const bool is_delete) { u8 * const a_perm = &container_of(a, struct tomoyo_path2_acl, head) ->perm; u8 perm = READ_ONCE(*a_perm); const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm; if (is_delete) perm &= ~b_perm; else perm |= b_perm; WRITE_ONCE(*a_perm, perm); return !perm; } /** * tomoyo_update_path2_acl - Update "struct tomoyo_path2_acl" list. * * @perm: Permission. * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_update_path2_acl(const u8 perm, struct tomoyo_acl_param *param) { struct tomoyo_path2_acl e = { .head.type = TOMOYO_TYPE_PATH2_ACL, .perm = perm }; int error; if (!tomoyo_parse_name_union(param, &e.name1) || !tomoyo_parse_name_union(param, &e.name2)) error = -EINVAL; else error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_path2_acl, tomoyo_merge_path2_acl); tomoyo_put_name_union(&e.name1); tomoyo_put_name_union(&e.name2); return error; } /** * tomoyo_path_permission - Check permission for single path operation. * * @r: Pointer to "struct tomoyo_request_info". * @operation: Type of operation. * @filename: Filename to check. * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, const struct tomoyo_path_info *filename) __must_hold_shared(&tomoyo_ss) { int error; r->type = tomoyo_p2mac[operation]; r->mode = tomoyo_get_mode(r->domain->ns, r->profile, r->type); if (r->mode == TOMOYO_CONFIG_DISABLED) return 0; r->param_type = TOMOYO_TYPE_PATH_ACL; r->param.path.filename = filename; r->param.path.operation = operation; do { tomoyo_check_acl(r, tomoyo_check_path_acl); error = tomoyo_audit_path_log(r); } while (error == TOMOYO_RETRY_REQUEST); return error; } /** * tomoyo_execute_permission - Check permission for execute operation. * * @r: Pointer to "struct tomoyo_request_info". * @filename: Filename to check. * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ int tomoyo_execute_permission(struct tomoyo_request_info *r, const struct tomoyo_path_info *filename) { /* * Unlike other permission checks, this check is done regardless of * profile mode settings in order to check for domain transition * preference. */ r->type = TOMOYO_MAC_FILE_EXECUTE; r->mode = tomoyo_get_mode(r->domain->ns, r->profile, r->type); r->param_type = TOMOYO_TYPE_PATH_ACL; r->param.path.filename = filename; r->param.path.operation = TOMOYO_TYPE_EXECUTE; tomoyo_check_acl(r, tomoyo_check_path_acl); r->ee->transition = r->matched_acl && r->matched_acl->cond ? r->matched_acl->cond->transit : NULL; if (r->mode != TOMOYO_CONFIG_DISABLED) return tomoyo_audit_path_log(r); return 0; } /** * tomoyo_same_path_number_acl - Check for duplicated "struct tomoyo_path_number_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b except permission bits, false otherwise. */ static bool tomoyo_same_path_number_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_path_number_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_path_number_acl *p2 = container_of(b, typeof(*p2), head); return tomoyo_same_name_union(&p1->name, &p2->name) && tomoyo_same_number_union(&p1->number, &p2->number); } /** * tomoyo_merge_path_number_acl - Merge duplicated "struct tomoyo_path_number_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * @is_delete: True for @a &= ~@b, false for @a |= @b. * * Returns true if @a is empty, false otherwise. */ static bool tomoyo_merge_path_number_acl(struct tomoyo_acl_info *a, struct tomoyo_acl_info *b, const bool is_delete) { u8 * const a_perm = &container_of(a, struct tomoyo_path_number_acl, head)->perm; u8 perm = READ_ONCE(*a_perm); const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head) ->perm; if (is_delete) perm &= ~b_perm; else perm |= b_perm; WRITE_ONCE(*a_perm, perm); return !perm; } /** * tomoyo_update_path_number_acl - Update ioctl/chmod/chown/chgrp ACL. * * @perm: Permission. * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. */ static int tomoyo_update_path_number_acl(const u8 perm, struct tomoyo_acl_param *param) { struct tomoyo_path_number_acl e = { .head.type = TOMOYO_TYPE_PATH_NUMBER_ACL, .perm = perm }; int error; if (!tomoyo_parse_name_union(param, &e.name) || !tomoyo_parse_number_union(param, &e.number)) error = -EINVAL; else error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_path_number_acl, tomoyo_merge_path_number_acl); tomoyo_put_name_union(&e.name); tomoyo_put_number_union(&e.number); return error; } /** * tomoyo_path_number_perm - Check permission for "create", "mkdir", "mkfifo", "mksock", "ioctl", "chmod", "chown", "chgrp". * * @type: Type of operation. * @path: Pointer to "struct path". * @number: Number. * * Returns 0 on success, negative value otherwise. */ int tomoyo_path_number_perm(const u8 type, const struct path *path, unsigned long number) { struct tomoyo_request_info r; struct tomoyo_obj_info obj = { .path1 = { .mnt = path->mnt, .dentry = path->dentry }, }; int error = -ENOMEM; struct tomoyo_path_info buf; int idx; if (tomoyo_init_request_info(&r, NULL, tomoyo_pn2mac[type]) == TOMOYO_CONFIG_DISABLED) return 0; idx = tomoyo_read_lock(); if (!tomoyo_get_realpath(&buf, path)) goto out; r.obj = &obj; if (type == TOMOYO_TYPE_MKDIR) tomoyo_add_slash(&buf); r.param_type = TOMOYO_TYPE_PATH_NUMBER_ACL; r.param.path_number.operation = type; r.param.path_number.filename = &buf; r.param.path_number.number = number; do { tomoyo_check_acl(&r, tomoyo_check_path_number_acl); error = tomoyo_audit_path_number_log(&r); } while (error == TOMOYO_RETRY_REQUEST); kfree(buf.name); out: tomoyo_read_unlock(idx); if (r.mode != TOMOYO_CONFIG_ENFORCING) error = 0; return error; } /** * tomoyo_check_open_permission - Check permission for "read" and "write". * * @domain: Pointer to "struct tomoyo_domain_info". * @path: Pointer to "struct path". * @flag: Flags for open(). * * Returns 0 on success, negative value otherwise. */ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain, const struct path *path, const int flag) { const u8 acc_mode = ACC_MODE(flag); int error = 0; struct tomoyo_path_info buf; struct tomoyo_request_info r; struct tomoyo_obj_info obj = { .path1 = { .mnt = path->mnt, .dentry = path->dentry }, }; int idx; buf.name = NULL; r.mode = TOMOYO_CONFIG_DISABLED; idx = tomoyo_read_lock(); if (acc_mode && tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_OPEN) != TOMOYO_CONFIG_DISABLED) { if (!tomoyo_get_realpath(&buf, path)) { error = -ENOMEM; goto out; } r.obj = &obj; if (acc_mode & MAY_READ) error = tomoyo_path_permission(&r, TOMOYO_TYPE_READ, &buf); if (!error && (acc_mode & MAY_WRITE)) error = tomoyo_path_permission(&r, (flag & O_APPEND) ? TOMOYO_TYPE_APPEND : TOMOYO_TYPE_WRITE, &buf); } out: kfree(buf.name); tomoyo_read_unlock(idx); if (r.mode != TOMOYO_CONFIG_ENFORCING) error = 0; return error; } /** * tomoyo_path_perm - Check permission for "unlink", "rmdir", "truncate", "symlink", "append", "chroot" and "unmount". * * @operation: Type of operation. * @path: Pointer to "struct path". * @target: Symlink's target if @operation is TOMOYO_TYPE_SYMLINK, * NULL otherwise. * * Returns 0 on success, negative value otherwise. */ int tomoyo_path_perm(const u8 operation, const struct path *path, const char *target) { struct tomoyo_request_info r; struct tomoyo_obj_info obj = { .path1 = { .mnt = path->mnt, .dentry = path->dentry }, }; int error; struct tomoyo_path_info buf; bool is_enforce; struct tomoyo_path_info symlink_target; int idx; if (tomoyo_init_request_info(&r, NULL, tomoyo_p2mac[operation]) == TOMOYO_CONFIG_DISABLED) return 0; is_enforce = (r.mode == TOMOYO_CONFIG_ENFORCING); error = -ENOMEM; buf.name = NULL; idx = tomoyo_read_lock(); if (!tomoyo_get_realpath(&buf, path)) goto out; r.obj = &obj; switch (operation) { case TOMOYO_TYPE_RMDIR: case TOMOYO_TYPE_CHROOT: tomoyo_add_slash(&buf); break; case TOMOYO_TYPE_SYMLINK: symlink_target.name = tomoyo_encode(target); if (!symlink_target.name) goto out; tomoyo_fill_path_info(&symlink_target); obj.symlink_target = &symlink_target; break; } error = tomoyo_path_permission(&r, operation, &buf); if (operation == TOMOYO_TYPE_SYMLINK) kfree(symlink_target.name); out: kfree(buf.name); tomoyo_read_unlock(idx); if (!is_enforce) error = 0; return error; } /** * tomoyo_mkdev_perm - Check permission for "mkblock" and "mkchar". * * @operation: Type of operation. (TOMOYO_TYPE_MKCHAR or TOMOYO_TYPE_MKBLOCK) * @path: Pointer to "struct path". * @mode: Create mode. * @dev: Device number. * * Returns 0 on success, negative value otherwise. */ int tomoyo_mkdev_perm(const u8 operation, const struct path *path, const unsigned int mode, unsigned int dev) { struct tomoyo_request_info r; struct tomoyo_obj_info obj = { .path1 = { .mnt = path->mnt, .dentry = path->dentry }, }; int error = -ENOMEM; struct tomoyo_path_info buf; int idx; if (tomoyo_init_request_info(&r, NULL, tomoyo_pnnn2mac[operation]) == TOMOYO_CONFIG_DISABLED) return 0; idx = tomoyo_read_lock(); error = -ENOMEM; if (tomoyo_get_realpath(&buf, path)) { r.obj = &obj; dev = new_decode_dev(dev); r.param_type = TOMOYO_TYPE_MKDEV_ACL; r.param.mkdev.filename = &buf; r.param.mkdev.operation = operation; r.param.mkdev.mode = mode; r.param.mkdev.major = MAJOR(dev); r.param.mkdev.minor = MINOR(dev); tomoyo_check_acl(&r, tomoyo_check_mkdev_acl); error = tomoyo_audit_mkdev_log(&r); kfree(buf.name); } tomoyo_read_unlock(idx); if (r.mode != TOMOYO_CONFIG_ENFORCING) error = 0; return error; } /** * tomoyo_path2_perm - Check permission for "rename", "link" and "pivot_root". * * @operation: Type of operation. * @path1: Pointer to "struct path". * @path2: Pointer to "struct path". * * Returns 0 on success, negative value otherwise. */ int tomoyo_path2_perm(const u8 operation, const struct path *path1, const struct path *path2) { int error = -ENOMEM; struct tomoyo_path_info buf1; struct tomoyo_path_info buf2; struct tomoyo_request_info r; struct tomoyo_obj_info obj = { .path1 = { .mnt = path1->mnt, .dentry = path1->dentry }, .path2 = { .mnt = path2->mnt, .dentry = path2->dentry } }; int idx; if (tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation]) == TOMOYO_CONFIG_DISABLED) return 0; buf1.name = NULL; buf2.name = NULL; idx = tomoyo_read_lock(); if (!tomoyo_get_realpath(&buf1, path1) || !tomoyo_get_realpath(&buf2, path2)) goto out; switch (operation) { case TOMOYO_TYPE_RENAME: case TOMOYO_TYPE_LINK: if (!d_is_dir(path1->dentry)) break; fallthrough; case TOMOYO_TYPE_PIVOT_ROOT: tomoyo_add_slash(&buf1); tomoyo_add_slash(&buf2); break; } r.obj = &obj; r.param_type = TOMOYO_TYPE_PATH2_ACL; r.param.path2.operation = operation; r.param.path2.filename1 = &buf1; r.param.path2.filename2 = &buf2; do { tomoyo_check_acl(&r, tomoyo_check_path2_acl); error = tomoyo_audit_path2_log(&r); } while (error == TOMOYO_RETRY_REQUEST); out: kfree(buf1.name); kfree(buf2.name); tomoyo_read_unlock(idx); if (r.mode != TOMOYO_CONFIG_ENFORCING) error = 0; return error; } /** * tomoyo_same_mount_acl - Check for duplicated "struct tomoyo_mount_acl" entry. * * @a: Pointer to "struct tomoyo_acl_info". * @b: Pointer to "struct tomoyo_acl_info". * * Returns true if @a == @b, false otherwise. */ static bool tomoyo_same_mount_acl(const struct tomoyo_acl_info *a, const struct tomoyo_acl_info *b) { const struct tomoyo_mount_acl *p1 = container_of(a, typeof(*p1), head); const struct tomoyo_mount_acl *p2 = container_of(b, typeof(*p2), head); return tomoyo_same_name_union(&p1->dev_name, &p2->dev_name) && tomoyo_same_name_union(&p1->dir_name, &p2->dir_name) && tomoyo_same_name_union(&p1->fs_type, &p2->fs_type) && tomoyo_same_number_union(&p1->flags, &p2->flags); } /** * tomoyo_update_mount_acl - Write "struct tomoyo_mount_acl" list. * * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ static int tomoyo_update_mount_acl(struct tomoyo_acl_param *param) { struct tomoyo_mount_acl e = { .head.type = TOMOYO_TYPE_MOUNT_ACL }; int error; if (!tomoyo_parse_name_union(param, &e.dev_name) || !tomoyo_parse_name_union(param, &e.dir_name) || !tomoyo_parse_name_union(param, &e.fs_type) || !tomoyo_parse_number_union(param, &e.flags)) error = -EINVAL; else error = tomoyo_update_domain(&e.head, sizeof(e), param, tomoyo_same_mount_acl, NULL); tomoyo_put_name_union(&e.dev_name); tomoyo_put_name_union(&e.dir_name); tomoyo_put_name_union(&e.fs_type); tomoyo_put_number_union(&e.flags); return error; } /** * tomoyo_write_file - Update file related list. * * @param: Pointer to "struct tomoyo_acl_param". * * Returns 0 on success, negative value otherwise. * * Caller holds tomoyo_read_lock(). */ int tomoyo_write_file(struct tomoyo_acl_param *param) { u16 perm = 0; u8 type; const char *operation = tomoyo_read_token(param); for (type = 0; type < TOMOYO_MAX_PATH_OPERATION; type++) if (tomoyo_permstr(operation, tomoyo_path_keyword[type])) perm |= 1 << type; if (perm) return tomoyo_update_path_acl(perm, param); for (type = 0; type < TOMOYO_MAX_PATH2_OPERATION; type++) if (tomoyo_permstr(operation, tomoyo_mac_keywords[tomoyo_pp2mac[type]])) perm |= 1 << type; if (perm) return tomoyo_update_path2_acl(perm, param); for (type = 0; type < TOMOYO_MAX_PATH_NUMBER_OPERATION; type++) if (tomoyo_permstr(operation, tomoyo_mac_keywords[tomoyo_pn2mac[type]])) perm |= 1 << type; if (perm) return tomoyo_update_path_number_acl(perm, param); for (type = 0; type < TOMOYO_MAX_MKDEV_OPERATION; type++) if (tomoyo_permstr(operation, tomoyo_mac_keywords[tomoyo_pnnn2mac[type]])) perm |= 1 << type; if (perm) return tomoyo_update_mkdev_acl(perm, param); if (tomoyo_permstr(operation, tomoyo_mac_keywords[TOMOYO_MAC_FILE_MOUNT])) return tomoyo_update_mount_acl(param); return -EINVAL; } |
| 13 60 117 117 27 22 210 26 95 16 18 18 46 60 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * Definitions for the UDP module. * * Version: @(#)udp.h 1.0.2 05/07/93 * * Authors: Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Fixes: * Alan Cox : Turned on udp checksums. I don't want to * chase 'memory corruption' bugs that aren't! */ #ifndef _UDP_H #define _UDP_H #include <linux/list.h> #include <linux/bug.h> #include <net/inet_sock.h> #include <net/gso.h> #include <net/sock.h> #include <net/snmp.h> #include <net/ip.h> #include <linux/ipv6.h> #include <linux/seq_file.h> #include <linux/poll.h> #include <linux/indirect_call_wrapper.h> #include <linux/math.h> /** * struct udp_skb_cb - UDP private variables * * @header: private variables used by IPv4/IPv6 */ struct udp_skb_cb { union { struct inet_skb_parm h4; #if IS_ENABLED(CONFIG_IPV6) struct inet6_skb_parm h6; #endif } header; }; #define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb)) /** * struct udp_hslot - UDP hash slot used by udp_table.hash/hash4 * * @head: head of list of sockets * @nulls_head: head of list of sockets, only used by hash4 * @count: number of sockets in 'head' list * @lock: spinlock protecting changes to head/count */ struct udp_hslot { union { struct hlist_head head; /* hash4 uses hlist_nulls to avoid moving wrongly onto another * hlist, because rehash() can happen with lookup(). */ struct hlist_nulls_head nulls_head; }; int count; spinlock_t lock; } __aligned(2 * sizeof(long)); /** * struct udp_hslot_main - UDP hash slot used by udp_table.hash2 * * @hslot: basic hash slot * @hash4_cnt: number of sockets in hslot4 of the same * (local port, local address) */ struct udp_hslot_main { struct udp_hslot hslot; /* must be the first member */ #if !IS_ENABLED(CONFIG_BASE_SMALL) u32 hash4_cnt; #endif } __aligned(2 * sizeof(long)); #define UDP_HSLOT_MAIN(__hslot) ((struct udp_hslot_main *)(__hslot)) /** * struct udp_table - UDP table * * @hash: hash table, sockets are hashed on (local port) * @hash2: hash table, sockets are hashed on (local port, local address) * @hash4: hash table, connected sockets are hashed on * (local port, local address, remote port, remote address) * @mask: number of slots in hash tables, minus 1 * @log: log2(number of slots in hash table) */ struct udp_table { struct udp_hslot *hash; struct udp_hslot_main *hash2; #if !IS_ENABLED(CONFIG_BASE_SMALL) struct udp_hslot *hash4; #endif unsigned int mask; unsigned int log; }; extern struct udp_table udp_table; static inline struct udp_hslot *udp_hashslot(struct udp_table *table, const struct net *net, unsigned int num) { return &table->hash[udp_hashfn(net, num, table->mask)]; } /* * For secondary hash, net_hash_mix() is performed before calling * udp_hashslot2(), this explains difference with udp_hashslot() */ static inline struct udp_hslot *udp_hashslot2(struct udp_table *table, unsigned int hash) { return &table->hash2[hash & table->mask].hslot; } #if IS_ENABLED(CONFIG_BASE_SMALL) static inline void udp_table_hash4_init(struct udp_table *table) { } static inline struct udp_hslot *udp_hashslot4(struct udp_table *table, unsigned int hash) { BUILD_BUG(); return NULL; } static inline bool udp_hashed4(const struct sock *sk) { return false; } static inline unsigned int udp_hash4_slot_size(void) { return 0; } static inline bool udp_has_hash4(const struct udp_hslot *hslot2) { return false; } static inline void udp_hash4_inc(struct udp_hslot *hslot2) { } static inline void udp_hash4_dec(struct udp_hslot *hslot2) { } #else /* !CONFIG_BASE_SMALL */ /* Must be called with table->hash2 initialized */ static inline void udp_table_hash4_init(struct udp_table *table) { table->hash4 = (void *)(table->hash2 + (table->mask + 1)); for (int i = 0; i <= table->mask; i++) { table->hash2[i].hash4_cnt = 0; INIT_HLIST_NULLS_HEAD(&table->hash4[i].nulls_head, i); table->hash4[i].count = 0; spin_lock_init(&table->hash4[i].lock); } } static inline struct udp_hslot *udp_hashslot4(struct udp_table *table, unsigned int hash) { return &table->hash4[hash & table->mask]; } static inline bool udp_hashed4(const struct sock *sk) { return !hlist_nulls_unhashed(&udp_sk(sk)->udp_lrpa_node); } static inline unsigned int udp_hash4_slot_size(void) { return sizeof(struct udp_hslot); } static inline bool udp_has_hash4(const struct udp_hslot *hslot2) { return UDP_HSLOT_MAIN(hslot2)->hash4_cnt; } static inline void udp_hash4_inc(struct udp_hslot *hslot2) { UDP_HSLOT_MAIN(hslot2)->hash4_cnt++; } static inline void udp_hash4_dec(struct udp_hslot *hslot2) { UDP_HSLOT_MAIN(hslot2)->hash4_cnt--; } #endif /* CONFIG_BASE_SMALL */ extern struct proto udp_prot; DECLARE_PER_CPU(int, udp_memory_per_cpu_fw_alloc); /* sysctl variables for udp */ extern long sysctl_udp_mem[3]; extern int sysctl_udp_rmem_min; extern int sysctl_udp_wmem_min; struct sk_buff; /* * Generic checksumming routines for UDP v4 and v6 */ static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb) { return __skb_checksum_complete(skb); } static inline int udp_lib_checksum_complete(struct sk_buff *skb) { return !skb_csum_unnecessary(skb) && __udp_lib_checksum_complete(skb); } /** * udp_csum_outgoing - compute UDPv4/v6 checksum over fragments * @sk: socket we are writing to * @skb: sk_buff containing the filled-in UDP header * (checksum field must be zeroed out) */ static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb) { __wsum csum = csum_partial(skb_transport_header(skb), sizeof(struct udphdr), 0); skb_queue_walk(&sk->sk_write_queue, skb) { csum = csum_add(csum, skb->csum); } return csum; } static inline __wsum udp_csum(struct sk_buff *skb) { __wsum csum = csum_partial(skb_transport_header(skb), sizeof(struct udphdr), skb->csum); for (skb = skb_shinfo(skb)->frag_list; skb; skb = skb->next) { csum = csum_add(csum, skb->csum); } return csum; } static inline __sum16 udp_v4_check(int len, __be32 saddr, __be32 daddr, __wsum base) { return csum_tcpudp_magic(saddr, daddr, len, IPPROTO_UDP, base); } void udp_set_csum(bool nocheck, struct sk_buff *skb, __be32 saddr, __be32 daddr, int len); static inline void udp_csum_pull_header(struct sk_buff *skb) { if (!skb->csum_valid && skb->ip_summed == CHECKSUM_NONE) skb->csum = csum_partial(skb->data, sizeof(struct udphdr), skb->csum); skb_pull_rcsum(skb, sizeof(struct udphdr)); } typedef struct sock *(*udp_lookup_t)(const struct sk_buff *skb, __be16 sport, __be16 dport); void udp_v6_early_demux(struct sk_buff *skb); INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *)); int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len); INDIRECT_CALLABLE_DECLARE(int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags)); struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb, netdev_features_t features, bool is_ipv6); static inline int udp_lib_init_sock(struct sock *sk) { struct udp_sock *up = udp_sk(sk); sk->sk_drop_counters = &up->drop_counters; skb_queue_head_init(&up->reader_queue); INIT_HLIST_NODE(&up->tunnel_list); up->forward_threshold = sk->sk_rcvbuf >> 2; set_bit(SOCK_CUSTOM_SOCKOPT, &sk->sk_socket->flags); up->udp_prod_queue = kzalloc_objs(*up->udp_prod_queue, nr_node_ids); if (!up->udp_prod_queue) return -ENOMEM; for (int i = 0; i < nr_node_ids; i++) init_llist_head(&up->udp_prod_queue[i].ll_root); return 0; } static inline void udp_drops_inc(struct sock *sk) { numa_drop_add(&udp_sk(sk)->drop_counters, 1); } /* hash routines shared between UDPv4/6 */ static inline int udp_lib_hash(struct sock *sk) { BUG(); return 0; } void udp_lib_unhash(struct sock *sk); void udp_lib_rehash(struct sock *sk, u16 new_hash, u16 new_hash4); u32 udp_ehashfn(const struct net *net, const __be32 laddr, const __u16 lport, const __be32 faddr, const __be16 fport); static inline void udp_lib_close(struct sock *sk, long timeout) { sk_common_release(sk); } /* hash4 routines shared between UDPv4/6 */ #if IS_ENABLED(CONFIG_BASE_SMALL) static inline void udp_lib_hash4(struct sock *sk, u16 hash) { } static inline void udp4_hash4(struct sock *sk) { } #else /* !CONFIG_BASE_SMALL */ void udp_lib_hash4(struct sock *sk, u16 hash); void udp4_hash4(struct sock *sk); #endif /* CONFIG_BASE_SMALL */ int udp_lib_get_port(struct sock *sk, unsigned short snum, unsigned int hash2_nulladdr); u32 udp_flow_hashrnd(void); static inline __be16 udp_flow_src_port(struct net *net, struct sk_buff *skb, int min, int max, bool use_eth) { u32 hash; if (min >= max) { /* Use default range */ inet_get_local_port_range(net, &min, &max); } hash = skb_get_hash(skb); if (unlikely(!hash)) { if (use_eth) { /* Can't find a normal hash, caller has indicated an * Ethernet packet so use that to compute a hash. */ hash = jhash(skb->data, 2 * ETH_ALEN, (__force u32) skb->protocol); } else { /* Can't derive any sort of hash for the packet, set * to some consistent random value. */ hash = udp_flow_hashrnd(); } } /* Since this is being sent on the wire obfuscate hash a bit * to minimize possibility that any useful information to an * attacker is leaked. Only upper 16 bits are relevant in the * computation for 16 bit port value. */ hash ^= hash << 16; return htons(reciprocal_scale(hash, max - min + 1) + min); } static inline int udp_rqueue_get(struct sock *sk) { return sk_rmem_alloc_get(sk) - READ_ONCE(udp_sk(sk)->forward_deficit); } static inline bool udp_sk_bound_dev_eq(const struct net *net, int bound_dev_if, int dif, int sdif) { #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) return inet_bound_dev_eq(!!READ_ONCE(net->ipv4.sysctl_udp_l3mdev_accept), bound_dev_if, dif, sdif); #else return inet_bound_dev_eq(true, bound_dev_if, dif, sdif); #endif } /* net/ipv4/udp.c */ void udp_destruct_common(struct sock *sk); void skb_consume_udp(struct sock *sk, struct sk_buff *skb, int len); int __udp_enqueue_schedule_skb(struct sock *sk, struct sk_buff *skb); void udp_skb_destructor(struct sock *sk, struct sk_buff *skb); struct sk_buff *__skb_recv_udp(struct sock *sk, unsigned int flags, int *off, int *err); static inline struct sk_buff *skb_recv_udp(struct sock *sk, unsigned int flags, int *err) { int off = 0; return __skb_recv_udp(sk, flags, &off, err); } enum skb_drop_reason udp_v4_early_demux(struct sk_buff *skb); bool udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst); int udp_err(struct sk_buff *, u32); int udp_abort(struct sock *sk, int err); int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len); INDIRECT_CALLABLE_DECLARE(int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags)); void udp_splice_eof(struct socket *sock); int udp_push_pending_frames(struct sock *sk); void udp_flush_pending_frames(struct sock *sk); int udp_cmsg_send(struct sock *sk, struct msghdr *msg, u16 *gso_size); void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst); int udp_rcv(struct sk_buff *skb); int udp_ioctl(struct sock *sk, int cmd, int *karg); int udp_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len); int __udp_disconnect(struct sock *sk, int flags); int udp_disconnect(struct sock *sk, int flags); __poll_t udp_poll(struct file *file, struct socket *sock, poll_table *wait); struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, netdev_features_t features, bool is_ipv6); int udp_lib_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); int udp_lib_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, unsigned int optlen, int (*push_pending_frames)(struct sock *)); struct sock *udp4_lib_lookup(const struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif); struct sock *__udp4_lib_lookup(const struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif, int sdif, struct sk_buff *skb); struct sock *udp4_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); struct sock *udp6_lib_lookup(const struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, int dif); struct sock *__udp6_lib_lookup(const struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, int dif, int sdif, struct sk_buff *skb); struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); int udp_read_skb(struct sock *sk, skb_read_actor_t recv_actor); /* UDP uses skb->dev_scratch to cache as much information as possible and avoid * possibly multiple cache miss on dequeue() */ struct udp_dev_scratch { /* skb->truesize and the stateless bit are embedded in a single field; * do not use a bitfield since the compiler emits better/smaller code * this way */ u32 _tsize_state; #if BITS_PER_LONG == 64 /* len and the bit needed to compute skb_csum_unnecessary * will be on cold cache lines at recvmsg time. * skb->len can be stored on 16 bits since the udp header has been * already validated and pulled. */ u16 len; bool is_linear; bool csum_unnecessary; #endif }; static inline struct udp_dev_scratch *udp_skb_scratch(struct sk_buff *skb) { return (struct udp_dev_scratch *)&skb->dev_scratch; } #if BITS_PER_LONG == 64 static inline unsigned int udp_skb_len(struct sk_buff *skb) { return udp_skb_scratch(skb)->len; } static inline bool udp_skb_csum_unnecessary(struct sk_buff *skb) { return udp_skb_scratch(skb)->csum_unnecessary; } static inline bool udp_skb_is_linear(struct sk_buff *skb) { return udp_skb_scratch(skb)->is_linear; } #else static inline unsigned int udp_skb_len(struct sk_buff *skb) { return skb->len; } static inline bool udp_skb_csum_unnecessary(struct sk_buff *skb) { return skb_csum_unnecessary(skb); } static inline bool udp_skb_is_linear(struct sk_buff *skb) { return !skb_is_nonlinear(skb); } #endif static inline int copy_linear_skb(struct sk_buff *skb, int len, int off, struct iov_iter *to) { return copy_to_iter_full(skb->data + off, len, to) ? 0 : -EFAULT; } /* * SNMP statistics for UDP */ #define __UDP_INC_STATS(net, field) \ __SNMP_INC_STATS((net)->mib.udp_statistics, field) #define UDP_INC_STATS(net, field) \ SNMP_INC_STATS((net)->mib.udp_statistics, field) #define __UDP6_INC_STATS(net, field) \ __SNMP_INC_STATS((net)->mib.udp_stats_in6, field) #define UDP6_INC_STATS(net, field) \ SNMP_INC_STATS((net)->mib.udp_stats_in6, field) #if IS_ENABLED(CONFIG_IPV6) #define __UDPX_MIB(sk, ipv4) \ ({ \ ipv4 ? sock_net(sk)->mib.udp_statistics : \ sock_net(sk)->mib.udp_stats_in6; \ }) #else #define __UDPX_MIB(sk, ipv4) \ ({ \ sock_net(sk)->mib.udp_statistics; \ }) #endif #define __UDPX_INC_STATS(sk, field) \ __SNMP_INC_STATS(__UDPX_MIB(sk, (sk)->sk_family == AF_INET), field) #ifdef CONFIG_PROC_FS struct udp_seq_afinfo { sa_family_t family; }; struct udp_iter_state { struct seq_net_private p; int bucket; }; void *udp_seq_start(struct seq_file *seq, loff_t *pos); void *udp_seq_next(struct seq_file *seq, void *v, loff_t *pos); void udp_seq_stop(struct seq_file *seq, void *v); int udp4_proc_init(void); void udp4_proc_exit(void); #endif /* CONFIG_PROC_FS */ int udpv4_offload_init(void); void udp_init(void); DECLARE_STATIC_KEY_FALSE(udp_encap_needed_key); void udp_encap_enable(void); void udp_encap_disable(void); #if IS_ENABLED(CONFIG_IPV6) DECLARE_STATIC_KEY_FALSE(udpv6_encap_needed_key); void udpv6_encap_enable(void); #endif static inline struct sk_buff *udp_rcv_segment(struct sock *sk, struct sk_buff *skb, bool ipv4) { netdev_features_t features = NETIF_F_SG; struct sk_buff *segs; int drop_count; /* * Segmentation in UDP receive path is only for UDP GRO, drop udp * fragmentation offload (UFO) packets. */ if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP) { drop_count = 1; goto drop; } /* Avoid csum recalculation by skb_segment unless userspace explicitly * asks for the final checksum values */ if (!inet_get_convert_csum(sk)) features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; /* UDP segmentation expects packets of type CHECKSUM_PARTIAL or * CHECKSUM_NONE in __udp_gso_segment. UDP GRO indeed builds partial * packets in udp_gro_complete_segment. As does UDP GSO, verified by * udp_send_skb. But when those packets are looped in dev_loopback_xmit * their ip_summed CHECKSUM_NONE is changed to CHECKSUM_UNNECESSARY. * Reset in this specific case, where PARTIAL is both correct and * required. */ if (skb->pkt_type == PACKET_LOOPBACK) skb->ip_summed = CHECKSUM_PARTIAL; /* the GSO CB lays after the UDP one, no need to save and restore any * CB fragment */ segs = __skb_gso_segment(skb, features, false); if (IS_ERR_OR_NULL(segs)) { drop_count = skb_shinfo(skb)->gso_segs; goto drop; } consume_skb(skb); return segs; drop: sk_drops_add(sk, drop_count); SNMP_ADD_STATS(__UDPX_MIB(sk, ipv4), UDP_MIB_INERRORS, drop_count); kfree_skb(skb); return NULL; } static inline void udp_post_segment_fix_csum(struct sk_buff *skb) { /* UDP packets generated with UDP_SEGMENT and traversing: * * UDP tunnel(xmit) -> veth (segmentation) -> veth (gro) -> UDP tunnel (rx) * * can reach an UDP socket with CHECKSUM_NONE, because * __iptunnel_pull_header() converts CHECKSUM_PARTIAL into NONE. * SKB_GSO_UDP_L4 or SKB_GSO_FRAGLIST packets with no UDP tunnel will * have a valid checksum, as the GRO engine validates the UDP csum * before the aggregation and nobody strips such info in between. * Instead of adding another check in the tunnel fastpath, we can force * a valid csum after the segmentation. * Additionally fixup the UDP CB. */ if (skb->ip_summed == CHECKSUM_NONE && !skb->csum_valid) skb->csum_valid = 1; } #ifdef CONFIG_BPF_SYSCALL struct sk_psock; int udp_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); #endif #endif /* _UDP_H */ |
| 29 8 22 20 8 13 18 4 14 1 21 19 19 4 1 1 2 2 6 3 3 6 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 | // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2021 Facebook */ #include <linux/bitmap.h> #include <linux/bpf.h> #include <linux/btf.h> #include <linux/err.h> #include <linux/jhash.h> #include <linux/random.h> #include <linux/btf_ids.h> #define BLOOM_CREATE_FLAG_MASK \ (BPF_F_NUMA_NODE | BPF_F_ZERO_SEED | BPF_F_ACCESS_MASK) struct bpf_bloom_filter { struct bpf_map map; u32 bitset_mask; u32 hash_seed; u32 nr_hash_funcs; unsigned long bitset[]; }; static u32 hash(struct bpf_bloom_filter *bloom, void *value, u32 value_size, u32 index) { u32 h; if (likely(value_size % 4 == 0)) h = jhash2(value, value_size / 4, bloom->hash_seed + index); else h = jhash(value, value_size, bloom->hash_seed + index); return h & bloom->bitset_mask; } static long bloom_map_peek_elem(struct bpf_map *map, void *value) { struct bpf_bloom_filter *bloom = container_of(map, struct bpf_bloom_filter, map); u32 i, h; for (i = 0; i < bloom->nr_hash_funcs; i++) { h = hash(bloom, value, map->value_size, i); if (!test_bit(h, bloom->bitset)) return -ENOENT; } return 0; } static long bloom_map_push_elem(struct bpf_map *map, void *value, u64 flags) { struct bpf_bloom_filter *bloom = container_of(map, struct bpf_bloom_filter, map); u32 i, h; if (flags != BPF_ANY) return -EINVAL; for (i = 0; i < bloom->nr_hash_funcs; i++) { h = hash(bloom, value, map->value_size, i); set_bit(h, bloom->bitset); } return 0; } static long bloom_map_pop_elem(struct bpf_map *map, void *value) { return -EOPNOTSUPP; } static long bloom_map_delete_elem(struct bpf_map *map, void *value) { return -EOPNOTSUPP; } static int bloom_map_get_next_key(struct bpf_map *map, void *key, void *next_key) { return -EOPNOTSUPP; } /* Called from syscall */ static int bloom_map_alloc_check(union bpf_attr *attr) { if (attr->value_size > KMALLOC_MAX_SIZE) /* if value_size is bigger, the user space won't be able to * access the elements. */ return -E2BIG; return 0; } static struct bpf_map *bloom_map_alloc(union bpf_attr *attr) { u32 bitset_bytes, bitset_mask, nr_hash_funcs, nr_bits; int numa_node = bpf_map_attr_numa_node(attr); struct bpf_bloom_filter *bloom; if (attr->key_size != 0 || attr->value_size == 0 || attr->max_entries == 0 || attr->map_flags & ~BLOOM_CREATE_FLAG_MASK || !bpf_map_flags_access_ok(attr->map_flags) || /* The lower 4 bits of map_extra (0xF) specify the number * of hash functions */ (attr->map_extra & ~0xF)) return ERR_PTR(-EINVAL); nr_hash_funcs = attr->map_extra; if (nr_hash_funcs == 0) /* Default to using 5 hash functions if unspecified */ nr_hash_funcs = 5; /* For the bloom filter, the optimal bit array size that minimizes the * false positive probability is n * k / ln(2) where n is the number of * expected entries in the bloom filter and k is the number of hash * functions. We use 7 / 5 to approximate 1 / ln(2). * * We round this up to the nearest power of two to enable more efficient * hashing using bitmasks. The bitmask will be the bit array size - 1. * * If this overflows a u32, the bit array size will have 2^32 (4 * GB) bits. */ if (check_mul_overflow(attr->max_entries, nr_hash_funcs, &nr_bits) || check_mul_overflow(nr_bits / 5, (u32)7, &nr_bits) || nr_bits > (1UL << 31)) { /* The bit array size is 2^32 bits but to avoid overflowing the * u32, we use U32_MAX, which will round up to the equivalent * number of bytes */ bitset_bytes = BITS_TO_BYTES(U32_MAX); bitset_mask = U32_MAX; } else { if (nr_bits <= BITS_PER_LONG) nr_bits = BITS_PER_LONG; else nr_bits = roundup_pow_of_two(nr_bits); bitset_bytes = BITS_TO_BYTES(nr_bits); bitset_mask = nr_bits - 1; } bitset_bytes = roundup(bitset_bytes, sizeof(unsigned long)); bloom = bpf_map_area_alloc(sizeof(*bloom) + bitset_bytes, numa_node); if (!bloom) return ERR_PTR(-ENOMEM); bpf_map_init_from_attr(&bloom->map, attr); bloom->nr_hash_funcs = nr_hash_funcs; bloom->bitset_mask = bitset_mask; if (!(attr->map_flags & BPF_F_ZERO_SEED)) bloom->hash_seed = get_random_u32(); return &bloom->map; } static void bloom_map_free(struct bpf_map *map) { struct bpf_bloom_filter *bloom = container_of(map, struct bpf_bloom_filter, map); bpf_map_area_free(bloom); } static void *bloom_map_lookup_elem(struct bpf_map *map, void *key) { /* The eBPF program should use map_peek_elem instead */ return ERR_PTR(-EINVAL); } static long bloom_map_update_elem(struct bpf_map *map, void *key, void *value, u64 flags) { /* The eBPF program should use map_push_elem instead */ return -EINVAL; } static int bloom_map_check_btf(struct bpf_map *map, const struct btf *btf, const struct btf_type *key_type, const struct btf_type *value_type) { /* Bloom filter maps are keyless */ return btf_type_is_void(key_type) ? 0 : -EINVAL; } static u64 bloom_map_mem_usage(const struct bpf_map *map) { struct bpf_bloom_filter *bloom; u64 bitset_bytes; bloom = container_of(map, struct bpf_bloom_filter, map); bitset_bytes = BITS_TO_BYTES((u64)bloom->bitset_mask + 1); bitset_bytes = roundup(bitset_bytes, sizeof(unsigned long)); return sizeof(*bloom) + bitset_bytes; } BTF_ID_LIST_SINGLE(bpf_bloom_map_btf_ids, struct, bpf_bloom_filter) const struct bpf_map_ops bloom_filter_map_ops = { .map_meta_equal = bpf_map_meta_equal, .map_alloc_check = bloom_map_alloc_check, .map_alloc = bloom_map_alloc, .map_free = bloom_map_free, .map_get_next_key = bloom_map_get_next_key, .map_push_elem = bloom_map_push_elem, .map_peek_elem = bloom_map_peek_elem, .map_pop_elem = bloom_map_pop_elem, .map_lookup_elem = bloom_map_lookup_elem, .map_update_elem = bloom_map_update_elem, .map_delete_elem = bloom_map_delete_elem, .map_check_btf = bloom_map_check_btf, .map_mem_usage = bloom_map_mem_usage, .map_btf_id = &bpf_bloom_map_btf_ids[0], }; |
| 46 2 5 38 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 | // SPDX-License-Identifier: GPL-2.0-or-later /* * IP Payload Compression Protocol (IPComp) - RFC3173. * * Copyright (c) 2003 James Morris <jmorris@intercode.com.au> * Copyright (c) 2003-2025 Herbert Xu <herbert@gondor.apana.org.au> * * Todo: * - Tunable compression parameters. * - Compression stats. * - Adaptive compression. */ #include <crypto/acompress.h> #include <linux/err.h> #include <linux/module.h> #include <linux/skbuff_ref.h> #include <linux/slab.h> #include <net/ipcomp.h> #include <net/xfrm.h> #define IPCOMP_SCRATCH_SIZE 65400 struct ipcomp_skb_cb { struct xfrm_skb_cb xfrm; struct acomp_req *req; }; struct ipcomp_data { u16 threshold; struct crypto_acomp *tfm; }; struct ipcomp_req_extra { struct xfrm_state *x; struct scatterlist sg[]; }; static inline struct ipcomp_skb_cb *ipcomp_cb(struct sk_buff *skb) { struct ipcomp_skb_cb *cb = (void *)skb->cb; BUILD_BUG_ON(sizeof(*cb) > sizeof(skb->cb)); return cb; } static int ipcomp_post_acomp(struct sk_buff *skb, int err, int hlen) { struct acomp_req *req = ipcomp_cb(skb)->req; struct ipcomp_req_extra *extra; struct scatterlist *dsg; int len, dlen; if (unlikely(err)) goto out_free_req; extra = acomp_request_extra(req); dsg = extra->sg; dlen = req->dlen; pskb_trim_unique(skb, 0); __skb_put(skb, hlen); /* Only update truesize on input. */ if (!hlen) skb->truesize += dlen; skb->data_len = dlen; skb->len += dlen; do { skb_frag_t *frag; struct page *page; frag = skb_shinfo(skb)->frags + skb_shinfo(skb)->nr_frags; page = sg_page(dsg); dsg = sg_next(dsg); len = PAGE_SIZE; if (dlen < len) len = dlen; skb_frag_fill_page_desc(frag, page, 0, len); skb_shinfo(skb)->nr_frags++; } while ((dlen -= len)); for (; dsg; dsg = sg_next(dsg)) __free_page(sg_page(dsg)); out_free_req: acomp_request_free(req); return err; } static int ipcomp_input_done2(struct sk_buff *skb, int err) { struct ip_comp_hdr *ipch = ip_comp_hdr(skb); const int plen = skb->len; skb->transport_header = skb->network_header + sizeof(*ipch); return ipcomp_post_acomp(skb, err, 0) ?: skb->len < (plen + sizeof(ip_comp_hdr)) ? -EINVAL : ipch->nexthdr; } static void ipcomp_input_done(void *data, int err) { struct sk_buff *skb = data; xfrm_input_resume(skb, ipcomp_input_done2(skb, err)); } static struct acomp_req *ipcomp_setup_req(struct xfrm_state *x, struct sk_buff *skb, int minhead, int dlen) { const int dnfrags = min(MAX_SKB_FRAGS, 16); struct ipcomp_data *ipcd = x->data; struct ipcomp_req_extra *extra; struct scatterlist *sg, *dsg; const int plen = skb->len; struct crypto_acomp *tfm; struct acomp_req *req; int nfrags; int total; int err; int i; ipcomp_cb(skb)->req = NULL; do { struct sk_buff *trailer; if (skb->len > PAGE_SIZE) { if (skb_linearize_cow(skb)) return ERR_PTR(-ENOMEM); nfrags = 1; break; } if (!skb_cloned(skb) && skb_headlen(skb) >= minhead) { if (!skb_is_nonlinear(skb)) { nfrags = 1; break; } else if (!skb_has_frag_list(skb)) { nfrags = skb_shinfo(skb)->nr_frags; nfrags++; break; } } nfrags = skb_cow_data(skb, skb_headlen(skb) < minhead ? minhead - skb_headlen(skb) : 0, &trailer); if (nfrags < 0) return ERR_PTR(nfrags); } while (0); tfm = ipcd->tfm; req = acomp_request_alloc_extra( tfm, sizeof(*extra) + sizeof(*sg) * (nfrags + dnfrags), GFP_ATOMIC); ipcomp_cb(skb)->req = req; if (!req) return ERR_PTR(-ENOMEM); extra = acomp_request_extra(req); extra->x = x; dsg = extra->sg; sg = dsg + dnfrags; sg_init_table(sg, nfrags); err = skb_to_sgvec(skb, sg, 0, plen); if (unlikely(err < 0)) return ERR_PTR(err); sg_init_table(dsg, dnfrags); total = 0; for (i = 0; i < dnfrags && total < dlen; i++) { struct page *page; page = alloc_page(GFP_ATOMIC); if (!page) break; sg_set_page(dsg + i, page, PAGE_SIZE, 0); total += PAGE_SIZE; } if (!i) return ERR_PTR(-ENOMEM); sg_mark_end(dsg + i - 1); dlen = min(dlen, total); acomp_request_set_params(req, sg, dsg, plen, dlen); return req; } static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb) { struct acomp_req *req; int err; req = ipcomp_setup_req(x, skb, 0, IPCOMP_SCRATCH_SIZE); err = PTR_ERR(req); if (IS_ERR(req)) goto out; acomp_request_set_callback(req, 0, ipcomp_input_done, skb); err = crypto_acomp_decompress(req); if (err == -EINPROGRESS) return err; out: return ipcomp_input_done2(skb, err); } int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb) { struct ip_comp_hdr *ipch __maybe_unused; if (!pskb_may_pull(skb, sizeof(*ipch))) return -EINVAL; skb->ip_summed = CHECKSUM_NONE; /* Remove ipcomp header and decompress original payload */ __skb_pull(skb, sizeof(*ipch)); return ipcomp_decompress(x, skb); } EXPORT_SYMBOL_GPL(ipcomp_input); static int ipcomp_output_push(struct sk_buff *skb) { skb_push(skb, -skb_network_offset(skb)); return 0; } static int ipcomp_output_done2(struct xfrm_state *x, struct sk_buff *skb, int err) { struct ip_comp_hdr *ipch; err = ipcomp_post_acomp(skb, err, sizeof(*ipch)); if (err) goto out_ok; /* Install ipcomp header, convert into ipcomp datagram. */ ipch = ip_comp_hdr(skb); ipch->nexthdr = *skb_mac_header(skb); ipch->flags = 0; ipch->cpi = htons((u16 )ntohl(x->id.spi)); *skb_mac_header(skb) = IPPROTO_COMP; out_ok: return ipcomp_output_push(skb); } static void ipcomp_output_done(void *data, int err) { struct ipcomp_req_extra *extra; struct sk_buff *skb = data; struct acomp_req *req; req = ipcomp_cb(skb)->req; extra = acomp_request_extra(req); xfrm_output_resume(skb_to_full_sk(skb), skb, ipcomp_output_done2(extra->x, skb, err)); } static int ipcomp_compress(struct xfrm_state *x, struct sk_buff *skb) { struct ip_comp_hdr *ipch __maybe_unused; struct acomp_req *req; int err; req = ipcomp_setup_req(x, skb, sizeof(*ipch), skb->len - sizeof(*ipch)); err = PTR_ERR(req); if (IS_ERR(req)) goto out; acomp_request_set_callback(req, 0, ipcomp_output_done, skb); err = crypto_acomp_compress(req); if (err == -EINPROGRESS) return err; out: return ipcomp_output_done2(x, skb, err); } int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb) { struct ipcomp_data *ipcd = x->data; if (skb->len < ipcd->threshold) { /* Don't bother compressing */ return ipcomp_output_push(skb); } return ipcomp_compress(x, skb); } EXPORT_SYMBOL_GPL(ipcomp_output); static void ipcomp_free_data(struct ipcomp_data *ipcd) { crypto_free_acomp(ipcd->tfm); } void ipcomp_destroy(struct xfrm_state *x) { struct ipcomp_data *ipcd = x->data; if (!ipcd) return; ipcomp_free_data(ipcd); kfree(ipcd); } EXPORT_SYMBOL_GPL(ipcomp_destroy); int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack) { int err; struct ipcomp_data *ipcd; struct xfrm_algo_desc *calg_desc; err = -EINVAL; if (!x->calg) { NL_SET_ERR_MSG(extack, "Missing required compression algorithm"); goto out; } if (x->encap) { NL_SET_ERR_MSG(extack, "IPComp is not compatible with encapsulation"); goto out; } err = -ENOMEM; ipcd = kzalloc_obj(*ipcd); if (!ipcd) goto out; ipcd->tfm = crypto_alloc_acomp(x->calg->alg_name, 0, 0); if (IS_ERR(ipcd->tfm)) goto error; calg_desc = xfrm_calg_get_byname(x->calg->alg_name, 0); BUG_ON(!calg_desc); ipcd->threshold = calg_desc->uinfo.comp.threshold; x->data = ipcd; err = 0; out: return err; error: ipcomp_free_data(ipcd); kfree(ipcd); goto out; } EXPORT_SYMBOL_GPL(ipcomp_init_state); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("IP Payload Compression Protocol (IPComp) - RFC3173"); MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>"); |
| 4 3 1 2 2 2 2 2 2 2 2 1 1 2 3 2 2 2 3 3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 | // SPDX-License-Identifier: GPL-2.0-only /* * linux/fs/affs/inode.c * * (c) 1996 Hans-Joachim Widmaier - Rewritten * * (C) 1993 Ray Burr - Modified for Amiga FFS filesystem. * * (C) 1992 Eric Youngdale Modified for ISO 9660 filesystem. * * (C) 1991 Linus Torvalds - minix filesystem */ #include <linux/module.h> #include <linux/init.h> #include <linux/statfs.h> #include <linux/fs_parser.h> #include <linux/fs_context.h> #include <linux/magic.h> #include <linux/sched.h> #include <linux/cred.h> #include <linux/slab.h> #include <linux/writeback.h> #include <linux/blkdev.h> #include <linux/seq_file.h> #include <linux/iversion.h> #include "affs.h" static int affs_statfs(struct dentry *dentry, struct kstatfs *buf); static int affs_show_options(struct seq_file *m, struct dentry *root); static void affs_commit_super(struct super_block *sb, int wait) { struct affs_sb_info *sbi = AFFS_SB(sb); struct buffer_head *bh = sbi->s_root_bh; struct affs_root_tail *tail = AFFS_ROOT_TAIL(sb, bh); lock_buffer(bh); affs_secs_to_datestamp(ktime_get_real_seconds(), &tail->disk_change); affs_fix_checksum(sb, bh); unlock_buffer(bh); mark_buffer_dirty(bh); if (wait) sync_dirty_buffer(bh); } static void affs_put_super(struct super_block *sb) { struct affs_sb_info *sbi = AFFS_SB(sb); pr_debug("%s()\n", __func__); cancel_delayed_work_sync(&sbi->sb_work); } static int affs_sync_fs(struct super_block *sb, int wait) { affs_commit_super(sb, wait); return 0; } static void flush_superblock(struct work_struct *work) { struct affs_sb_info *sbi; struct super_block *sb; sbi = container_of(work, struct affs_sb_info, sb_work.work); sb = sbi->sb; spin_lock(&sbi->work_lock); sbi->work_queued = 0; spin_unlock(&sbi->work_lock); affs_commit_super(sb, 1); } void affs_mark_sb_dirty(struct super_block *sb) { struct affs_sb_info *sbi = AFFS_SB(sb); unsigned long delay; if (sb_rdonly(sb)) return; spin_lock(&sbi->work_lock); if (!sbi->work_queued) { delay = msecs_to_jiffies(dirty_writeback_interval * 10); queue_delayed_work(system_long_wq, &sbi->sb_work, delay); sbi->work_queued = 1; } spin_unlock(&sbi->work_lock); } static struct kmem_cache * affs_inode_cachep; static struct inode *affs_alloc_inode(struct super_block *sb) { struct affs_inode_info *i; i = alloc_inode_sb(sb, affs_inode_cachep, GFP_KERNEL); if (!i) return NULL; inode_set_iversion(&i->vfs_inode, 1); i->i_lc = NULL; i->i_ext_bh = NULL; i->i_pa_cnt = 0; mmb_init(&i->i_metadata_bhs, &i->vfs_inode.i_data); return &i->vfs_inode; } static void affs_free_inode(struct inode *inode) { kmem_cache_free(affs_inode_cachep, AFFS_I(inode)); } static void init_once(void *foo) { struct affs_inode_info *ei = (struct affs_inode_info *) foo; mutex_init(&ei->i_link_lock); mutex_init(&ei->i_ext_lock); inode_init_once(&ei->vfs_inode); } static int __init init_inodecache(void) { affs_inode_cachep = kmem_cache_create("affs_inode_cache", sizeof(struct affs_inode_info), 0, (SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT), init_once); if (affs_inode_cachep == NULL) return -ENOMEM; return 0; } static void destroy_inodecache(void) { /* * Make sure all delayed rcu free inodes are flushed before we * destroy cache. */ rcu_barrier(); kmem_cache_destroy(affs_inode_cachep); } static const struct super_operations affs_sops = { .alloc_inode = affs_alloc_inode, .free_inode = affs_free_inode, .write_inode = affs_write_inode, .evict_inode = affs_evict_inode, .put_super = affs_put_super, .sync_fs = affs_sync_fs, .statfs = affs_statfs, .show_options = affs_show_options, }; enum { Opt_bs, Opt_mode, Opt_mufs, Opt_notruncate, Opt_prefix, Opt_protect, Opt_reserved, Opt_root, Opt_setgid, Opt_setuid, Opt_verbose, Opt_volume, Opt_ignore, }; struct affs_context { kuid_t uid; /* uid to override */ kgid_t gid; /* gid to override */ unsigned int mode; /* mode to override */ unsigned int reserved; /* Number of reserved blocks */ int root_block; /* FFS root block number */ int blocksize; /* Initial device blksize */ char *prefix; /* Prefix for volumes and assigns */ char volume[32]; /* Vol. prefix for absolute symlinks */ unsigned long mount_flags; /* Options */ }; static const struct fs_parameter_spec affs_param_spec[] = { fsparam_u32 ("bs", Opt_bs), fsparam_u32oct ("mode", Opt_mode), fsparam_flag ("mufs", Opt_mufs), fsparam_flag ("nofilenametruncate", Opt_notruncate), fsparam_string ("prefix", Opt_prefix), fsparam_flag ("protect", Opt_protect), fsparam_u32 ("reserved", Opt_reserved), fsparam_u32 ("root", Opt_root), fsparam_gid ("setgid", Opt_setgid), fsparam_uid ("setuid", Opt_setuid), fsparam_flag ("verbose", Opt_verbose), fsparam_string ("volume", Opt_volume), fsparam_flag ("grpquota", Opt_ignore), fsparam_flag ("noquota", Opt_ignore), fsparam_flag ("quota", Opt_ignore), fsparam_flag ("usrquota", Opt_ignore), {}, }; static int affs_parse_param(struct fs_context *fc, struct fs_parameter *param) { struct affs_context *ctx = fc->fs_private; struct fs_parse_result result; int n; int opt; opt = fs_parse(fc, affs_param_spec, param, &result); if (opt < 0) return opt; switch (opt) { case Opt_bs: n = result.uint_32; if (n != 512 && n != 1024 && n != 2048 && n != 4096) { pr_warn("Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); return -EINVAL; } ctx->blocksize = n; break; case Opt_mode: ctx->mode = result.uint_32 & 0777; affs_set_opt(ctx->mount_flags, SF_SETMODE); break; case Opt_mufs: affs_set_opt(ctx->mount_flags, SF_MUFS); break; case Opt_notruncate: affs_set_opt(ctx->mount_flags, SF_NO_TRUNCATE); break; case Opt_prefix: kfree(ctx->prefix); ctx->prefix = param->string; param->string = NULL; affs_set_opt(ctx->mount_flags, SF_PREFIX); break; case Opt_protect: affs_set_opt(ctx->mount_flags, SF_IMMUTABLE); break; case Opt_reserved: ctx->reserved = result.uint_32; break; case Opt_root: ctx->root_block = result.uint_32; break; case Opt_setgid: ctx->gid = result.gid; affs_set_opt(ctx->mount_flags, SF_SETGID); break; case Opt_setuid: ctx->uid = result.uid; affs_set_opt(ctx->mount_flags, SF_SETUID); break; case Opt_verbose: affs_set_opt(ctx->mount_flags, SF_VERBOSE); break; case Opt_volume: strscpy(ctx->volume, param->string, 32); break; case Opt_ignore: /* Silently ignore the quota options */ break; default: return -EINVAL; } return 0; } static int affs_show_options(struct seq_file *m, struct dentry *root) { struct super_block *sb = root->d_sb; struct affs_sb_info *sbi = AFFS_SB(sb); if (sb->s_blocksize) seq_printf(m, ",bs=%lu", sb->s_blocksize); if (affs_test_opt(sbi->s_flags, SF_SETMODE)) seq_printf(m, ",mode=%o", sbi->s_mode); if (affs_test_opt(sbi->s_flags, SF_MUFS)) seq_puts(m, ",mufs"); if (affs_test_opt(sbi->s_flags, SF_NO_TRUNCATE)) seq_puts(m, ",nofilenametruncate"); if (affs_test_opt(sbi->s_flags, SF_PREFIX)) seq_printf(m, ",prefix=%s", sbi->s_prefix); if (affs_test_opt(sbi->s_flags, SF_IMMUTABLE)) seq_puts(m, ",protect"); if (sbi->s_reserved != 2) seq_printf(m, ",reserved=%u", sbi->s_reserved); if (sbi->s_root_block != (sbi->s_reserved + sbi->s_partition_size - 1) / 2) seq_printf(m, ",root=%u", sbi->s_root_block); if (affs_test_opt(sbi->s_flags, SF_SETGID)) seq_printf(m, ",setgid=%u", from_kgid_munged(&init_user_ns, sbi->s_gid)); if (affs_test_opt(sbi->s_flags, SF_SETUID)) seq_printf(m, ",setuid=%u", from_kuid_munged(&init_user_ns, sbi->s_uid)); if (affs_test_opt(sbi->s_flags, SF_VERBOSE)) seq_puts(m, ",verbose"); if (sbi->s_volume[0]) seq_printf(m, ",volume=%s", sbi->s_volume); return 0; } /* This function definitely needs to be split up. Some fine day I'll * hopefully have the guts to do so. Until then: sorry for the mess. */ static int affs_fill_super(struct super_block *sb, struct fs_context *fc) { struct affs_sb_info *sbi; struct affs_context *ctx = fc->fs_private; struct buffer_head *root_bh = NULL; struct buffer_head *boot_bh; struct inode *root_inode = NULL; int silent = fc->sb_flags & SB_SILENT; int size, blocksize; u32 chksum; int num_bm; int i, j; int tmp_flags; /* fix remount prototype... */ u8 sig[4]; int ret; sb->s_magic = AFFS_SUPER_MAGIC; sb->s_op = &affs_sops; sb->s_flags |= SB_NODIRATIME; sb->s_time_gran = NSEC_PER_SEC; sb->s_time_min = sys_tz.tz_minuteswest * 60 + AFFS_EPOCH_DELTA; sb->s_time_max = 86400LL * U32_MAX + 86400 + sb->s_time_min; sbi = kzalloc_obj(struct affs_sb_info); if (!sbi) return -ENOMEM; sb->s_fs_info = sbi; sbi->sb = sb; mutex_init(&sbi->s_bmlock); spin_lock_init(&sbi->symlink_lock); spin_lock_init(&sbi->work_lock); INIT_DELAYED_WORK(&sbi->sb_work, flush_superblock); sbi->s_flags = ctx->mount_flags; sbi->s_mode = ctx->mode; sbi->s_uid = ctx->uid; sbi->s_gid = ctx->gid; sbi->s_reserved = ctx->reserved; sbi->s_prefix = ctx->prefix; ctx->prefix = NULL; memcpy(sbi->s_volume, ctx->volume, 32); /* N.B. after this point s_prefix must be released */ /* Get the size of the device in 512-byte blocks. * If we later see that the partition uses bigger * blocks, we will have to change it. */ size = bdev_nr_sectors(sb->s_bdev); pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size); affs_set_blocksize(sb, PAGE_SIZE); /* Try to find root block. Its location depends on the block size. */ i = bdev_logical_block_size(sb->s_bdev); j = PAGE_SIZE; blocksize = ctx->blocksize; if (blocksize > 0) { i = j = blocksize; size = size / (blocksize / 512); } for (blocksize = i; blocksize <= j; blocksize <<= 1, size >>= 1) { sbi->s_root_block = ctx->root_block; if (ctx->root_block < 0) sbi->s_root_block = (ctx->reserved + size - 1) / 2; pr_debug("setting blocksize to %d\n", blocksize); affs_set_blocksize(sb, blocksize); sbi->s_partition_size = size; /* The root block location that was calculated above is not * correct if the partition size is an odd number of 512- * byte blocks, which will be rounded down to a number of * 1024-byte blocks, and if there were an even number of * reserved blocks. Ideally, all partition checkers should * report the real number of blocks of the real blocksize, * but since this just cannot be done, we have to try to * find the root block anyways. In the above case, it is one * block behind the calculated one. So we check this one, too. */ for (num_bm = 0; num_bm < 2; num_bm++) { pr_debug("Dev %s, trying root=%u, bs=%d, " "size=%d, reserved=%d\n", sb->s_id, sbi->s_root_block + num_bm, ctx->blocksize, size, ctx->reserved); root_bh = affs_bread(sb, sbi->s_root_block + num_bm); if (!root_bh) continue; if (!affs_checksum_block(sb, root_bh) && be32_to_cpu(AFFS_ROOT_HEAD(root_bh)->ptype) == T_SHORT && be32_to_cpu(AFFS_ROOT_TAIL(sb, root_bh)->stype) == ST_ROOT) { sbi->s_hashsize = blocksize / 4 - 56; sbi->s_root_block += num_bm; goto got_root; } affs_brelse(root_bh); root_bh = NULL; } } if (!silent) pr_err("No valid root block on device %s\n", sb->s_id); return -EINVAL; /* N.B. after this point bh must be released */ got_root: /* Keep super block in cache */ sbi->s_root_bh = root_bh; ctx->root_block = sbi->s_root_block; /* Find out which kind of FS we have */ boot_bh = sb_bread(sb, 0); if (!boot_bh) { pr_err("Cannot read boot block\n"); return -EINVAL; } memcpy(sig, boot_bh->b_data, 4); brelse(boot_bh); chksum = be32_to_cpu(*(__be32 *)sig); /* Dircache filesystems are compatible with non-dircache ones * when reading. As long as they aren't supported, writing is * not recommended. */ if ((chksum == FS_DCFFS || chksum == MUFS_DCFFS || chksum == FS_DCOFS || chksum == MUFS_DCOFS) && !sb_rdonly(sb)) { pr_notice("Dircache FS - mounting %s read only\n", sb->s_id); sb->s_flags |= SB_RDONLY; } switch (chksum) { case MUFS_FS: case MUFS_INTLFFS: case MUFS_DCFFS: affs_set_opt(sbi->s_flags, SF_MUFS); fallthrough; case FS_INTLFFS: case FS_DCFFS: affs_set_opt(sbi->s_flags, SF_INTL); break; case MUFS_FFS: affs_set_opt(sbi->s_flags, SF_MUFS); break; case FS_FFS: break; case MUFS_OFS: affs_set_opt(sbi->s_flags, SF_MUFS); fallthrough; case FS_OFS: affs_set_opt(sbi->s_flags, SF_OFS); sb->s_flags |= SB_NOEXEC; break; case MUFS_DCOFS: case MUFS_INTLOFS: affs_set_opt(sbi->s_flags, SF_MUFS); fallthrough; case FS_DCOFS: case FS_INTLOFS: affs_set_opt(sbi->s_flags, SF_INTL); affs_set_opt(sbi->s_flags, SF_OFS); sb->s_flags |= SB_NOEXEC; break; default: pr_err("Unknown filesystem on device %s: %08X\n", sb->s_id, chksum); return -EINVAL; } if (affs_test_opt(ctx->mount_flags, SF_VERBOSE)) { u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0]; pr_notice("Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", len > 31 ? 31 : len, AFFS_ROOT_TAIL(sb, root_bh)->disk_name + 1, sig, sig[3] + '0', blocksize); } sb->s_flags |= SB_NODEV | SB_NOSUID; sbi->s_data_blksize = sb->s_blocksize; if (affs_test_opt(sbi->s_flags, SF_OFS)) sbi->s_data_blksize -= 24; tmp_flags = sb->s_flags; ret = affs_init_bitmap(sb, &tmp_flags); if (ret) return ret; sb->s_flags = tmp_flags; /* set up enough so that it can read an inode */ root_inode = affs_iget(sb, ctx->root_block); if (IS_ERR(root_inode)) return PTR_ERR(root_inode); if (affs_test_opt(AFFS_SB(sb)->s_flags, SF_INTL)) set_default_d_op(sb, &affs_intl_dentry_operations); else set_default_d_op(sb, &affs_dentry_operations); sb->s_root = d_make_root(root_inode); if (!sb->s_root) { pr_err("AFFS: Get root inode failed\n"); return -ENOMEM; } sb->s_export_op = &affs_export_ops; pr_debug("s_flags=%lX\n", sb->s_flags); return 0; } static int affs_reconfigure(struct fs_context *fc) { struct super_block *sb = fc->root->d_sb; struct affs_context *ctx = fc->fs_private; struct affs_sb_info *sbi = AFFS_SB(sb); int res = 0; sync_filesystem(sb); fc->sb_flags |= SB_NODIRATIME; flush_delayed_work(&sbi->sb_work); /* * NB: Historically, only mount_flags, mode, uid, gic, prefix, * and volume are accepted during remount. */ sbi->s_flags = ctx->mount_flags; sbi->s_mode = ctx->mode; sbi->s_uid = ctx->uid; sbi->s_gid = ctx->gid; /* protect against readers */ spin_lock(&sbi->symlink_lock); if (ctx->prefix) { kfree(sbi->s_prefix); sbi->s_prefix = ctx->prefix; ctx->prefix = NULL; } memcpy(sbi->s_volume, ctx->volume, 32); spin_unlock(&sbi->symlink_lock); if ((bool)(fc->sb_flags & SB_RDONLY) == sb_rdonly(sb)) return 0; if (fc->sb_flags & SB_RDONLY) affs_free_bitmap(sb); else res = affs_init_bitmap(sb, &fc->sb_flags); return res; } static int affs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; int free; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); pr_debug("%s() partsize=%d, reserved=%d\n", __func__, AFFS_SB(sb)->s_partition_size, AFFS_SB(sb)->s_reserved); free = affs_count_free_blocks(sb); buf->f_type = AFFS_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_blocks = AFFS_SB(sb)->s_partition_size - AFFS_SB(sb)->s_reserved; buf->f_bfree = free; buf->f_bavail = free; buf->f_fsid = u64_to_fsid(id); buf->f_namelen = AFFSNAMEMAX; return 0; } static int affs_get_tree(struct fs_context *fc) { return get_tree_bdev(fc, affs_fill_super); } static void affs_kill_sb(struct super_block *sb) { struct affs_sb_info *sbi = AFFS_SB(sb); kill_block_super(sb); if (sbi) { affs_free_bitmap(sb); affs_brelse(sbi->s_root_bh); kfree(sbi->s_prefix); mutex_destroy(&sbi->s_bmlock); kfree_rcu(sbi, rcu); } } static void affs_free_fc(struct fs_context *fc) { struct affs_context *ctx = fc->fs_private; kfree(ctx->prefix); kfree(ctx); } static const struct fs_context_operations affs_context_ops = { .parse_param = affs_parse_param, .get_tree = affs_get_tree, .reconfigure = affs_reconfigure, .free = affs_free_fc, }; static int affs_init_fs_context(struct fs_context *fc) { struct affs_context *ctx; ctx = kzalloc_obj(struct affs_context); if (!ctx) return -ENOMEM; if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { struct super_block *sb = fc->root->d_sb; struct affs_sb_info *sbi = AFFS_SB(sb); /* * NB: historically, no options other than volume were * preserved across a remount unless they were explicitly * passed in. */ memcpy(ctx->volume, sbi->s_volume, 32); } else { ctx->uid = current_uid(); ctx->gid = current_gid(); ctx->reserved = 2; ctx->root_block = -1; ctx->blocksize = -1; ctx->volume[0] = ':'; } fc->ops = &affs_context_ops; fc->fs_private = ctx; return 0; } static struct file_system_type affs_fs_type = { .owner = THIS_MODULE, .name = "affs", .kill_sb = affs_kill_sb, .fs_flags = FS_REQUIRES_DEV, .init_fs_context = affs_init_fs_context, .parameters = affs_param_spec, }; MODULE_ALIAS_FS("affs"); static int __init init_affs_fs(void) { int err = init_inodecache(); if (err) goto out1; err = register_filesystem(&affs_fs_type); if (err) goto out; return 0; out: destroy_inodecache(); out1: return err; } static void __exit exit_affs_fs(void) { unregister_filesystem(&affs_fs_type); destroy_inodecache(); } MODULE_DESCRIPTION("Amiga filesystem support for Linux"); MODULE_LICENSE("GPL"); module_init(init_affs_fs) module_exit(exit_affs_fs) |
| 14 1 1 1 11 6 9 6 10 9 2 3 2 1 9 9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | // SPDX-License-Identifier: GPL-2.0 /* * linux/mm/msync.c * * Copyright (C) 1994-1999 Linus Torvalds */ /* * The msync() system call. */ #include <linux/fs.h> #include <linux/mm.h> #include <linux/mman.h> #include <linux/file.h> #include <linux/syscalls.h> #include <linux/sched.h> /* * MS_SYNC syncs the entire file - including mappings. * * MS_ASYNC does not start I/O (it used to, up to 2.5.67). * Nor does it marks the relevant pages dirty (it used to up to 2.6.17). * Now it doesn't do anything, since dirty pages are properly tracked. * * The application may now run fsync() to * write out the dirty pages and wait on the writeout and check the result. * Or the application may run fadvise(FADV_DONTNEED) against the fd to start * async writeout immediately. * So by _not_ starting I/O in MS_ASYNC we provide complete flexibility to * applications. */ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) { unsigned long end; struct mm_struct *mm = current->mm; struct vm_area_struct *vma; int unmapped_error = 0; int error = -EINVAL; start = untagged_addr(start); if (flags & ~(MS_ASYNC | MS_INVALIDATE | MS_SYNC)) goto out; if (offset_in_page(start)) goto out; if ((flags & MS_ASYNC) && (flags & MS_SYNC)) goto out; error = -ENOMEM; len = (len + ~PAGE_MASK) & PAGE_MASK; end = start + len; if (end < start) goto out; error = 0; if (end == start) goto out; /* * If the interval [start,end) covers some unmapped address ranges, * just ignore them, but return -ENOMEM at the end. Besides, if the * flag is MS_ASYNC (w/o MS_INVALIDATE) the result would be -ENOMEM * anyway and there is nothing left to do, so return immediately. */ mmap_read_lock(mm); vma = find_vma(mm, start); for (;;) { struct file *file; loff_t fstart, fend; /* Still start < end. */ error = -ENOMEM; if (!vma) goto out_unlock; /* Here start < vma->vm_end. */ if (start < vma->vm_start) { if (flags == MS_ASYNC) goto out_unlock; start = vma->vm_start; if (start >= end) goto out_unlock; unmapped_error = -ENOMEM; } /* Here vma->vm_start <= start < vma->vm_end. */ if ((flags & MS_INVALIDATE) && (vma->vm_flags & VM_LOCKED)) { error = -EBUSY; goto out_unlock; } file = vma->vm_file; fstart = (start - vma->vm_start) + ((loff_t)vma->vm_pgoff << PAGE_SHIFT); fend = fstart + (min(end, vma->vm_end) - start) - 1; start = vma->vm_end; if ((flags & MS_SYNC) && file && (vma->vm_flags & VM_SHARED)) { get_file(file); mmap_read_unlock(mm); error = vfs_fsync_range(file, fstart, fend, 1); fput(file); if (error || start >= end) goto out; mmap_read_lock(mm); vma = find_vma(mm, start); } else { if (start >= end) { error = 0; goto out_unlock; } vma = find_vma(mm, vma->vm_end); } } out_unlock: mmap_read_unlock(mm); out: return error ? : unmapped_error; } |
| 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | // SPDX-License-Identifier: GPL-2.0-only /*************************************************************************** * Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> * * * * Based on Logitech G13 driver (v0.4) * * Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> * * * ***************************************************************************/ #include <linux/hid.h> #include <linux/backlight.h> #include "hid-picolcd.h" static int picolcd_get_brightness(struct backlight_device *bdev) { struct picolcd_data *data = bl_get_data(bdev); return data->lcd_brightness; } static int picolcd_set_brightness(struct backlight_device *bdev) { struct picolcd_data *data = bl_get_data(bdev); struct hid_report *report = picolcd_out_report(REPORT_BRIGHTNESS, data->hdev); unsigned long flags; if (!report || report->maxfield != 1 || report->field[0]->report_count != 1) return -ENODEV; data->lcd_brightness = bdev->props.brightness & 0x0ff; data->lcd_power = bdev->props.power; spin_lock_irqsave(&data->lock, flags); hid_set_field(report->field[0], 0, data->lcd_power == BACKLIGHT_POWER_ON ? data->lcd_brightness : 0); if (!(data->status & PICOLCD_FAILED)) hid_hw_request(data->hdev, report, HID_REQ_SET_REPORT); spin_unlock_irqrestore(&data->lock, flags); return 0; } static const struct backlight_ops picolcd_blops = { .update_status = picolcd_set_brightness, .get_brightness = picolcd_get_brightness, }; int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *report) { struct device *dev = &data->hdev->dev; struct backlight_device *bdev; struct backlight_properties props; if (!report) return -ENODEV; if (report->maxfield != 1 || report->field[0]->report_count != 1 || report->field[0]->report_size != 8) { dev_err(dev, "unsupported BRIGHTNESS report"); return -EINVAL; } memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = 0xff; bdev = backlight_device_register(dev_name(dev), dev, data, &picolcd_blops, &props); if (IS_ERR(bdev)) { dev_err(dev, "failed to register backlight\n"); return PTR_ERR(bdev); } bdev->props.brightness = 0xff; data->lcd_brightness = 0xff; data->backlight = bdev; picolcd_set_brightness(bdev); return 0; } void picolcd_exit_backlight(struct picolcd_data *data) { struct backlight_device *bdev = data->backlight; data->backlight = NULL; backlight_device_unregister(bdev); } int picolcd_resume_backlight(struct picolcd_data *data) { if (!data->backlight) return 0; return picolcd_set_brightness(data->backlight); } #ifdef CONFIG_PM void picolcd_suspend_backlight(struct picolcd_data *data) { int bl_power = data->lcd_power; if (!data->backlight) return; data->backlight->props.power = BACKLIGHT_POWER_OFF; picolcd_set_brightness(data->backlight); data->lcd_power = data->backlight->props.power = bl_power; } #endif /* CONFIG_PM */ |
| 1 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 | // SPDX-License-Identifier: GPL-2.0-or-later /* * SPCA505 chip based cameras initialization data * * V4L2 by Jean-Francis Moine <http://moinejf.free.fr> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define MODULE_NAME "spca505" #include "gspca.h" MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>"); MODULE_DESCRIPTION("GSPCA/SPCA505 USB Camera Driver"); MODULE_LICENSE("GPL"); /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ u8 subtype; #define IntelPCCameraPro 0 #define Nxultra 1 }; static const struct v4l2_pix_format vga_mode[] = { {160, 120, V4L2_PIX_FMT_SPCA505, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 4}, {176, 144, V4L2_PIX_FMT_SPCA505, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {320, 240, V4L2_PIX_FMT_SPCA505, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {352, 288, V4L2_PIX_FMT_SPCA505, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {640, 480, V4L2_PIX_FMT_SPCA505, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 3 / 2, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; #define SPCA50X_OFFSET_DATA 10 #define SPCA50X_REG_USB 0x02 /* spca505 501 */ #define SPCA50X_USB_CTRL 0x00 /* spca505 */ #define SPCA50X_CUSB_ENABLE 0x01 /* spca505 */ #define SPCA50X_REG_GLOBAL 0x03 /* spca505 */ #define SPCA50X_GMISC0_IDSEL 0x01 /* Global control device ID select spca505 */ #define SPCA50X_GLOBAL_MISC0 0x00 /* Global control miscellaneous 0 spca505 */ #define SPCA50X_GLOBAL_MISC1 0x01 /* 505 */ #define SPCA50X_GLOBAL_MISC3 0x03 /* 505 */ #define SPCA50X_GMISC3_SAA7113RST 0x20 /* Not sure about this one spca505 */ /* Image format and compression control */ #define SPCA50X_REG_COMPRESS 0x04 /* * Data to initialize a SPCA505. Common to the CCD and external modes */ static const u8 spca505_init_data[][3] = { /* bmRequest,value,index */ {SPCA50X_REG_GLOBAL, SPCA50X_GMISC3_SAA7113RST, SPCA50X_GLOBAL_MISC3}, /* Sensor reset */ {SPCA50X_REG_GLOBAL, 0x00, SPCA50X_GLOBAL_MISC3}, {SPCA50X_REG_GLOBAL, 0x00, SPCA50X_GLOBAL_MISC1}, /* Block USB reset */ {SPCA50X_REG_GLOBAL, SPCA50X_GMISC0_IDSEL, SPCA50X_GLOBAL_MISC0}, {0x05, 0x01, 0x10}, /* Maybe power down some stuff */ {0x05, 0x0f, 0x11}, /* Setup internal CCD ? */ {0x06, 0x10, 0x08}, {0x06, 0x00, 0x09}, {0x06, 0x00, 0x0a}, {0x06, 0x00, 0x0b}, {0x06, 0x10, 0x0c}, {0x06, 0x00, 0x0d}, {0x06, 0x00, 0x0e}, {0x06, 0x00, 0x0f}, {0x06, 0x10, 0x10}, {0x06, 0x02, 0x11}, {0x06, 0x00, 0x12}, {0x06, 0x04, 0x13}, {0x06, 0x02, 0x14}, {0x06, 0x8a, 0x51}, {0x06, 0x40, 0x52}, {0x06, 0xb6, 0x53}, {0x06, 0x3d, 0x54}, {} }; /* * Data to initialize the camera using the internal CCD */ static const u8 spca505_open_data_ccd[][3] = { /* bmRequest,value,index */ /* Internal CCD data set */ {0x03, 0x04, 0x01}, /* This could be a reset */ {0x03, 0x00, 0x01}, /* Setup compression and image registers. 0x6 and 0x7 seem to be related to H&V hold, and are resolution mode specific */ {0x04, 0x10, 0x01}, /* DIFF(0x50), was (0x10) */ {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x04, 0x20, 0x06}, {0x04, 0x20, 0x07}, {0x08, 0x0a, 0x00}, /* DIFF (0x4a), was (0xa) */ {0x05, 0x00, 0x10}, {0x05, 0x00, 0x11}, {0x05, 0x00, 0x00}, /* DIFF not written */ {0x05, 0x00, 0x01}, /* DIFF not written */ {0x05, 0x00, 0x02}, /* DIFF not written */ {0x05, 0x00, 0x03}, /* DIFF not written */ {0x05, 0x00, 0x04}, /* DIFF not written */ {0x05, 0x80, 0x05}, /* DIFF not written */ {0x05, 0xe0, 0x06}, /* DIFF not written */ {0x05, 0x20, 0x07}, /* DIFF not written */ {0x05, 0xa0, 0x08}, /* DIFF not written */ {0x05, 0x0, 0x12}, /* DIFF not written */ {0x05, 0x02, 0x0f}, /* DIFF not written */ {0x05, 0x10, 0x46}, /* DIFF not written */ {0x05, 0x8, 0x4a}, /* DIFF not written */ {0x03, 0x08, 0x03}, /* DIFF (0x3,0x28,0x3) */ {0x03, 0x08, 0x01}, {0x03, 0x0c, 0x03}, /* DIFF not written */ {0x03, 0x21, 0x00}, /* DIFF (0x39) */ /* Extra block copied from init to hopefully ensure CCD is in a sane state */ {0x06, 0x10, 0x08}, {0x06, 0x00, 0x09}, {0x06, 0x00, 0x0a}, {0x06, 0x00, 0x0b}, {0x06, 0x10, 0x0c}, {0x06, 0x00, 0x0d}, {0x06, 0x00, 0x0e}, {0x06, 0x00, 0x0f}, {0x06, 0x10, 0x10}, {0x06, 0x02, 0x11}, {0x06, 0x00, 0x12}, {0x06, 0x04, 0x13}, {0x06, 0x02, 0x14}, {0x06, 0x8a, 0x51}, {0x06, 0x40, 0x52}, {0x06, 0xb6, 0x53}, {0x06, 0x3d, 0x54}, /* End of extra block */ {0x06, 0x3f, 0x1}, /* Block skipped */ {0x06, 0x10, 0x02}, {0x06, 0x64, 0x07}, {0x06, 0x10, 0x08}, {0x06, 0x00, 0x09}, {0x06, 0x00, 0x0a}, {0x06, 0x00, 0x0b}, {0x06, 0x10, 0x0c}, {0x06, 0x00, 0x0d}, {0x06, 0x00, 0x0e}, {0x06, 0x00, 0x0f}, {0x06, 0x10, 0x10}, {0x06, 0x02, 0x11}, {0x06, 0x00, 0x12}, {0x06, 0x04, 0x13}, {0x06, 0x02, 0x14}, {0x06, 0x8a, 0x51}, {0x06, 0x40, 0x52}, {0x06, 0xb6, 0x53}, {0x06, 0x3d, 0x54}, {0x06, 0x60, 0x57}, {0x06, 0x20, 0x58}, {0x06, 0x15, 0x59}, {0x06, 0x05, 0x5a}, {0x05, 0x01, 0xc0}, {0x05, 0x10, 0xcb}, {0x05, 0x80, 0xc1}, /* */ {0x05, 0x0, 0xc2}, /* 4 was 0 */ {0x05, 0x00, 0xca}, {0x05, 0x80, 0xc1}, /* */ {0x05, 0x04, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x0, 0xc1}, /* */ {0x05, 0x00, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x40, 0xc1}, /* */ {0x05, 0x17, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x80, 0xc1}, /* */ {0x05, 0x06, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x80, 0xc1}, /* */ {0x05, 0x04, 0xc2}, {0x05, 0x00, 0xca}, {0x03, 0x4c, 0x3}, {0x03, 0x18, 0x1}, {0x06, 0x70, 0x51}, {0x06, 0xbe, 0x53}, {0x06, 0x71, 0x57}, {0x06, 0x20, 0x58}, {0x06, 0x05, 0x59}, {0x06, 0x15, 0x5a}, {0x04, 0x00, 0x08}, /* Compress = OFF (0x1 to turn on) */ {0x04, 0x12, 0x09}, {0x04, 0x21, 0x0a}, {0x04, 0x10, 0x0b}, {0x04, 0x21, 0x0c}, {0x04, 0x05, 0x00}, /* was 5 (Image Type ? ) */ {0x04, 0x00, 0x01}, {0x06, 0x3f, 0x01}, {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x04, 0x40, 0x06}, {0x04, 0x40, 0x07}, {0x06, 0x1c, 0x17}, {0x06, 0xe2, 0x19}, {0x06, 0x1c, 0x1b}, {0x06, 0xe2, 0x1d}, {0x06, 0xaa, 0x1f}, {0x06, 0x70, 0x20}, {0x05, 0x01, 0x10}, {0x05, 0x00, 0x11}, {0x05, 0x01, 0x00}, {0x05, 0x05, 0x01}, {0x05, 0x00, 0xc1}, /* */ {0x05, 0x00, 0xc2}, {0x05, 0x00, 0xca}, {0x06, 0x70, 0x51}, {0x06, 0xbe, 0x53}, {} }; /* * Made by Tomasz Zablocki (skalamandra@poczta.onet.pl) * SPCA505b chip based cameras initialization data */ /* jfm */ #define initial_brightness 0x7f /* 0x0(white)-0xff(black) */ /* #define initial_brightness 0x0 //0x0(white)-0xff(black) */ /* * Data to initialize a SPCA505. Common to the CCD and external modes */ static const u8 spca505b_init_data[][3] = { /* start */ {0x02, 0x00, 0x00}, /* init */ {0x02, 0x00, 0x01}, {0x02, 0x00, 0x02}, {0x02, 0x00, 0x03}, {0x02, 0x00, 0x04}, {0x02, 0x00, 0x05}, {0x02, 0x00, 0x06}, {0x02, 0x00, 0x07}, {0x02, 0x00, 0x08}, {0x02, 0x00, 0x09}, {0x03, 0x00, 0x00}, {0x03, 0x00, 0x01}, {0x03, 0x00, 0x02}, {0x03, 0x00, 0x03}, {0x03, 0x00, 0x04}, {0x03, 0x00, 0x05}, {0x03, 0x00, 0x06}, {0x04, 0x00, 0x00}, {0x04, 0x00, 0x02}, {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x04, 0x00, 0x06}, {0x04, 0x00, 0x07}, {0x04, 0x00, 0x08}, {0x04, 0x00, 0x09}, {0x04, 0x00, 0x0a}, {0x04, 0x00, 0x0b}, {0x04, 0x00, 0x0c}, {0x07, 0x00, 0x00}, {0x07, 0x00, 0x03}, {0x08, 0x00, 0x00}, {0x08, 0x00, 0x01}, {0x08, 0x00, 0x02}, {0x06, 0x18, 0x08}, {0x06, 0xfc, 0x09}, {0x06, 0xfc, 0x0a}, {0x06, 0xfc, 0x0b}, {0x06, 0x18, 0x0c}, {0x06, 0xfc, 0x0d}, {0x06, 0xfc, 0x0e}, {0x06, 0xfc, 0x0f}, {0x06, 0x18, 0x10}, {0x06, 0xfe, 0x12}, {0x06, 0x00, 0x11}, {0x06, 0x00, 0x14}, {0x06, 0x00, 0x13}, {0x06, 0x28, 0x51}, {0x06, 0xff, 0x53}, {0x02, 0x00, 0x08}, {0x03, 0x00, 0x03}, {0x03, 0x10, 0x03}, {} }; /* * Data to initialize the camera using the internal CCD */ static const u8 spca505b_open_data_ccd[][3] = { /* {0x02,0x00,0x00}, */ {0x03, 0x04, 0x01}, /* rst */ {0x03, 0x00, 0x01}, {0x03, 0x00, 0x00}, {0x03, 0x21, 0x00}, {0x03, 0x00, 0x04}, {0x03, 0x00, 0x03}, {0x03, 0x18, 0x03}, {0x03, 0x08, 0x01}, {0x03, 0x1c, 0x03}, {0x03, 0x5c, 0x03}, {0x03, 0x5c, 0x03}, {0x03, 0x18, 0x01}, /* same as 505 */ {0x04, 0x10, 0x01}, {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x04, 0x20, 0x06}, {0x04, 0x20, 0x07}, {0x08, 0x0a, 0x00}, {0x05, 0x00, 0x10}, {0x05, 0x00, 0x11}, {0x05, 0x00, 0x12}, {0x05, 0x6f, 0x00}, {0x05, initial_brightness >> 6, 0x00}, {0x05, (initial_brightness << 2) & 0xff, 0x01}, {0x05, 0x00, 0x02}, {0x05, 0x01, 0x03}, {0x05, 0x00, 0x04}, {0x05, 0x03, 0x05}, {0x05, 0xe0, 0x06}, {0x05, 0x20, 0x07}, {0x05, 0xa0, 0x08}, {0x05, 0x00, 0x12}, {0x05, 0x02, 0x0f}, {0x05, 0x80, 0x14}, /* max exposure off (0=on) */ {0x05, 0x01, 0xb0}, {0x05, 0x01, 0xbf}, {0x03, 0x02, 0x06}, {0x05, 0x10, 0x46}, {0x05, 0x08, 0x4a}, {0x06, 0x00, 0x01}, {0x06, 0x10, 0x02}, {0x06, 0x64, 0x07}, {0x06, 0x18, 0x08}, {0x06, 0xfc, 0x09}, {0x06, 0xfc, 0x0a}, {0x06, 0xfc, 0x0b}, {0x04, 0x00, 0x01}, {0x06, 0x18, 0x0c}, {0x06, 0xfc, 0x0d}, {0x06, 0xfc, 0x0e}, {0x06, 0xfc, 0x0f}, {0x06, 0x11, 0x10}, /* contrast */ {0x06, 0x00, 0x11}, {0x06, 0xfe, 0x12}, {0x06, 0x00, 0x13}, {0x06, 0x00, 0x14}, {0x06, 0x9d, 0x51}, {0x06, 0x40, 0x52}, {0x06, 0x7c, 0x53}, {0x06, 0x40, 0x54}, {0x06, 0x02, 0x57}, {0x06, 0x03, 0x58}, {0x06, 0x15, 0x59}, {0x06, 0x05, 0x5a}, {0x06, 0x03, 0x56}, {0x06, 0x02, 0x3f}, {0x06, 0x00, 0x40}, {0x06, 0x39, 0x41}, {0x06, 0x69, 0x42}, {0x06, 0x87, 0x43}, {0x06, 0x9e, 0x44}, {0x06, 0xb1, 0x45}, {0x06, 0xbf, 0x46}, {0x06, 0xcc, 0x47}, {0x06, 0xd5, 0x48}, {0x06, 0xdd, 0x49}, {0x06, 0xe3, 0x4a}, {0x06, 0xe8, 0x4b}, {0x06, 0xed, 0x4c}, {0x06, 0xf2, 0x4d}, {0x06, 0xf7, 0x4e}, {0x06, 0xfc, 0x4f}, {0x06, 0xff, 0x50}, {0x05, 0x01, 0xc0}, {0x05, 0x10, 0xcb}, {0x05, 0x40, 0xc1}, {0x05, 0x04, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x40, 0xc1}, {0x05, 0x09, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0xc0, 0xc1}, {0x05, 0x09, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x40, 0xc1}, {0x05, 0x59, 0xc2}, {0x05, 0x00, 0xca}, {0x04, 0x00, 0x01}, {0x05, 0x80, 0xc1}, {0x05, 0xec, 0xc2}, {0x05, 0x0, 0xca}, {0x06, 0x02, 0x57}, {0x06, 0x01, 0x58}, {0x06, 0x15, 0x59}, {0x06, 0x0a, 0x5a}, {0x06, 0x01, 0x57}, {0x06, 0x8a, 0x03}, {0x06, 0x0a, 0x6c}, {0x06, 0x30, 0x01}, {0x06, 0x20, 0x02}, {0x06, 0x00, 0x03}, {0x05, 0x8c, 0x25}, {0x06, 0x4d, 0x51}, /* maybe saturation (4d) */ {0x06, 0x84, 0x53}, /* making green (84) */ {0x06, 0x00, 0x57}, /* sharpness (1) */ {0x06, 0x18, 0x08}, {0x06, 0xfc, 0x09}, {0x06, 0xfc, 0x0a}, {0x06, 0xfc, 0x0b}, {0x06, 0x18, 0x0c}, /* maybe hue (18) */ {0x06, 0xfc, 0x0d}, {0x06, 0xfc, 0x0e}, {0x06, 0xfc, 0x0f}, {0x06, 0x18, 0x10}, /* maybe contrast (18) */ {0x05, 0x01, 0x02}, {0x04, 0x00, 0x08}, /* compression */ {0x04, 0x12, 0x09}, {0x04, 0x21, 0x0a}, {0x04, 0x10, 0x0b}, {0x04, 0x21, 0x0c}, {0x04, 0x1d, 0x00}, /* imagetype (1d) */ {0x04, 0x41, 0x01}, /* hardware snapcontrol */ {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x04, 0x10, 0x06}, {0x04, 0x10, 0x07}, {0x04, 0x40, 0x06}, {0x04, 0x40, 0x07}, {0x04, 0x00, 0x04}, {0x04, 0x00, 0x05}, {0x06, 0x1c, 0x17}, {0x06, 0xe2, 0x19}, {0x06, 0x1c, 0x1b}, {0x06, 0xe2, 0x1d}, {0x06, 0x5f, 0x1f}, {0x06, 0x32, 0x20}, {0x05, initial_brightness >> 6, 0x00}, {0x05, (initial_brightness << 2) & 0xff, 0x01}, {0x05, 0x06, 0xc1}, {0x05, 0x58, 0xc2}, {0x05, 0x00, 0xca}, {0x05, 0x00, 0x11}, {} }; static int reg_write(struct gspca_dev *gspca_dev, u16 req, u16 index, u16 value) { int ret; struct usb_device *dev = gspca_dev->dev; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), req, USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); gspca_dbg(gspca_dev, D_USBO, "reg write: 0x%02x,0x%02x:0x%02x, %d\n", req, index, value, ret); if (ret < 0) pr_err("reg write: error %d\n", ret); return ret; } /* returns: negative is error, pos or zero is data */ static int reg_read(struct gspca_dev *gspca_dev, u16 req, /* bRequest */ u16 index) /* wIndex */ { int ret; ret = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, 2, 500); /* timeout */ if (ret < 0) return ret; return (gspca_dev->usb_buf[1] << 8) + gspca_dev->usb_buf[0]; } static int write_vector(struct gspca_dev *gspca_dev, const u8 data[][3]) { int ret, i = 0; while (data[i][0] != 0) { ret = reg_write(gspca_dev, data[i][0], data[i][2], data[i][1]); if (ret < 0) return ret; i++; } return 0; } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; cam = &gspca_dev->cam; cam->cam_mode = vga_mode; sd->subtype = id->driver_info; if (sd->subtype != IntelPCCameraPro) cam->nmodes = ARRAY_SIZE(vga_mode); else /* no 640x480 for IntelPCCameraPro */ cam->nmodes = ARRAY_SIZE(vga_mode) - 1; return 0; } /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (write_vector(gspca_dev, sd->subtype == Nxultra ? spca505b_init_data : spca505_init_data)) return -EIO; return 0; } static void setbrightness(struct gspca_dev *gspca_dev, s32 brightness) { reg_write(gspca_dev, 0x05, 0x00, (255 - brightness) >> 6); reg_write(gspca_dev, 0x05, 0x01, (255 - brightness) << 2); } static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret, mode; static u8 mode_tb[][3] = { /* r00 r06 r07 */ {0x00, 0x10, 0x10}, /* 640x480 */ {0x01, 0x1a, 0x1a}, /* 352x288 */ {0x02, 0x1c, 0x1d}, /* 320x240 */ {0x04, 0x34, 0x34}, /* 176x144 */ {0x05, 0x40, 0x40} /* 160x120 */ }; if (sd->subtype == Nxultra) write_vector(gspca_dev, spca505b_open_data_ccd); else write_vector(gspca_dev, spca505_open_data_ccd); ret = reg_read(gspca_dev, 0x06, 0x16); if (ret < 0) { gspca_err(gspca_dev, "register read failed err: %d\n", ret); return ret; } if (ret != 0x0101) { pr_err("After vector read returns 0x%04x should be 0x0101\n", ret); } ret = reg_write(gspca_dev, 0x06, 0x16, 0x0a); if (ret < 0) return ret; reg_write(gspca_dev, 0x05, 0xc2, 0x12); /* necessary because without it we can see stream * only once after loading module */ /* stopping usb registers Tomasz change */ reg_write(gspca_dev, 0x02, 0x00, 0x00); mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; reg_write(gspca_dev, SPCA50X_REG_COMPRESS, 0x00, mode_tb[mode][0]); reg_write(gspca_dev, SPCA50X_REG_COMPRESS, 0x06, mode_tb[mode][1]); reg_write(gspca_dev, SPCA50X_REG_COMPRESS, 0x07, mode_tb[mode][2]); return reg_write(gspca_dev, SPCA50X_REG_USB, SPCA50X_USB_CTRL, SPCA50X_CUSB_ENABLE); } static void sd_stopN(struct gspca_dev *gspca_dev) { /* Disable ISO packet machine */ reg_write(gspca_dev, 0x02, 0x00, 0x00); } /* called on streamoff with alt 0 and on disconnect */ static void sd_stop0(struct gspca_dev *gspca_dev) { if (!gspca_dev->present) return; /* This maybe reset or power control */ reg_write(gspca_dev, 0x03, 0x03, 0x20); reg_write(gspca_dev, 0x03, 0x01, 0x00); reg_write(gspca_dev, 0x03, 0x00, 0x01); reg_write(gspca_dev, 0x05, 0x10, 0x01); reg_write(gspca_dev, 0x05, 0x11, 0x0f); } static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, /* isoc packet */ int len) /* iso packet length */ { switch (data[0]) { case 0: /* start of frame */ gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); data += SPCA50X_OFFSET_DATA; len -= SPCA50X_OFFSET_DATA; gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); break; case 0xff: /* drop */ break; default: data += 1; len -= 1; gspca_frame_add(gspca_dev, INTER_PACKET, data, len); break; } } static int sd_s_ctrl(struct v4l2_ctrl *ctrl) { struct gspca_dev *gspca_dev = container_of(ctrl->handler, struct gspca_dev, ctrl_handler); gspca_dev->usb_err = 0; if (!gspca_dev->streaming) return 0; switch (ctrl->id) { case V4L2_CID_BRIGHTNESS: setbrightness(gspca_dev, ctrl->val); break; } return gspca_dev->usb_err; } static const struct v4l2_ctrl_ops sd_ctrl_ops = { .s_ctrl = sd_s_ctrl, }; static int sd_init_controls(struct gspca_dev *gspca_dev) { struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; gspca_dev->vdev.ctrl_handler = hdl; v4l2_ctrl_handler_init(hdl, 5); v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); if (hdl->error) { pr_err("Could not initialize controls\n"); return hdl->error; } return 0; } /* sub-driver description */ static const struct sd_desc sd_desc = { .name = MODULE_NAME, .config = sd_config, .init_controls = sd_init_controls, .init = sd_init, .start = sd_start, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, }; /* -- module initialisation -- */ static const struct usb_device_id device_table[] = { {USB_DEVICE(0x041e, 0x401d), .driver_info = Nxultra}, {USB_DEVICE(0x0733, 0x0430), .driver_info = IntelPCCameraPro}, /*fixme: may be UsbGrabberPV321 BRIDGE_SPCA506 SENSOR_SAA7113 */ {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, .reset_resume = gspca_resume, #endif }; module_usb_driver(sd_driver); |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | /* SPDX-License-Identifier: GPL-2.0 */ /* * This header file contains public constants and structures used by * the SCSI initiator code. */ #ifndef _SCSI_SCSI_H #define _SCSI_SCSI_H #include <linux/types.h> #include <asm/param.h> #include <scsi/scsi_common.h> #include <scsi/scsi_proto.h> #include <scsi/scsi_status.h> struct scsi_cmnd; enum scsi_timeouts { SCSI_DEFAULT_EH_TIMEOUT = 10 * HZ, }; /* * DIX-capable adapters effectively support infinite chaining for the * protection information scatterlist */ #define SCSI_MAX_PROT_SG_SEGMENTS 0xFFFF /* * Special value for scanning to specify scanning or rescanning of all * possible channels, (target) ids, or luns on a given shost. */ #define SCAN_WILD_CARD ~0 /* * standard mode-select header prepended to all mode-select commands */ struct ccs_modesel_head { __u8 _r1; /* reserved */ __u8 medium; /* device-specific medium type */ __u8 _r2; /* reserved */ __u8 block_desc_length; /* block descriptor length */ __u8 density; /* device-specific density code */ __u8 number_blocks_hi; /* number of blocks in this block desc */ __u8 number_blocks_med; __u8 number_blocks_lo; __u8 _r3; __u8 block_length_hi; /* block length for blocks in this desc */ __u8 block_length_med; __u8 block_length_lo; }; /* * The Well Known LUNS (SAM-3) in our int representation of a LUN */ #define SCSI_W_LUN_BASE 0xc100 #define SCSI_W_LUN_REPORT_LUNS (SCSI_W_LUN_BASE + 1) #define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2) #define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3) static inline int scsi_is_wlun(u64 lun) { return (lun & 0xff00) == SCSI_W_LUN_BASE; } /** * scsi_status_is_check_condition - check the status return. * * @status: the status passed up from the driver (including host and * driver components) * * Returns: %true if the status code is SAM_STAT_CHECK_CONDITION. */ static inline int scsi_status_is_check_condition(int status) { if (status < 0) return false; status &= 0xfe; return status == SAM_STAT_CHECK_CONDITION; } /* * Extended message codes. */ #define EXTENDED_MODIFY_DATA_POINTER 0x00 #define EXTENDED_SDTR 0x01 #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */ #define EXTENDED_WDTR 0x03 #define EXTENDED_PPR 0x04 #define EXTENDED_MODIFY_BIDI_DATA_PTR 0x05 /* * Internal return values. */ enum scsi_disposition { NEEDS_RETRY = 0x2001, SUCCESS = 0x2002, FAILED = 0x2003, QUEUED = 0x2004, SOFT_ERROR = 0x2005, ADD_TO_MLQUEUE = 0x2006, TIMEOUT_ERROR = 0x2007, SCSI_RETURN_NOT_HANDLED = 0x2008, FAST_IO_FAIL = 0x2009, }; /* * Status values returned by the .queuecommand() callback if a command has not * been queued. */ enum scsi_qc_status { SCSI_MLQUEUE_HOST_BUSY = 0x1055, SCSI_MLQUEUE_DEVICE_BUSY = 0x1056, SCSI_MLQUEUE_EH_RETRY = 0x1057, SCSI_MLQUEUE_TARGET_BUSY = 0x1058, }; /* * Use these to separate status msg and our bytes * * These are set by: * * status byte = set from target device * msg_byte (unused) * host_byte = set by low-level driver to indicate status. */ #define status_byte(result) (result & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) #define sense_error(sense) ((sense) & 0xf) #define sense_valid(sense) ((sense) & 0x80) /* * default timeouts */ #define FORMAT_UNIT_TIMEOUT (2 * 60 * 60 * HZ) #define START_STOP_TIMEOUT (60 * HZ) #define MOVE_MEDIUM_TIMEOUT (5 * 60 * HZ) #define READ_ELEMENT_STATUS_TIMEOUT (5 * 60 * HZ) #define READ_DEFECT_DATA_TIMEOUT (60 * HZ ) #define IDENTIFY_BASE 0x80 #define IDENTIFY(can_disconnect, lun) (IDENTIFY_BASE |\ ((can_disconnect) ? 0x40 : 0) |\ ((lun) & 0x07)) /* * struct scsi_device::scsi_level values. For SCSI devices other than those * prior to SCSI-2 (i.e. over 12 years old) this value is (resp[2] + 1) * where "resp" is a byte array of the response to an INQUIRY. The scsi_level * variable is visible to the user via sysfs. */ #define SCSI_UNKNOWN 0 #define SCSI_1 1 #define SCSI_1_CCS 2 #define SCSI_2 3 #define SCSI_3 4 /* SPC */ #define SCSI_SPC_2 5 #define SCSI_SPC_3 6 #define SCSI_SPC_4 7 #define SCSI_SPC_5 8 #define SCSI_SPC_6 14 /* * INQ PERIPHERAL QUALIFIERS */ #define SCSI_INQ_PQ_CON 0x00 #define SCSI_INQ_PQ_NOT_CON 0x01 #define SCSI_INQ_PQ_NOT_CAP 0x03 /* * Here are some scsi specific ioctl commands which are sometimes useful. * * Note that include/linux/cdrom.h also defines IOCTL 0x5300 - 0x5395 */ /* Used to obtain PUN and LUN info. Conflicts with CDROMAUDIOBUFSIZ */ #define SCSI_IOCTL_GET_IDLUN 0x5382 /* 0x5383 and 0x5384 were used for SCSI_IOCTL_TAGGED_{ENABLE,DISABLE} */ /* Used to obtain the host number of a device. */ #define SCSI_IOCTL_PROBE_HOST 0x5385 /* Used to obtain the bus number for a device */ #define SCSI_IOCTL_GET_BUS_NUMBER 0x5386 /* Used to obtain the PCI location of a device */ #define SCSI_IOCTL_GET_PCI 0x5387 /** * scsi_status_is_good - check the status return. * * @status: the status passed up from the driver (including host and * driver components) * * Returns: %true for known good conditions that may be treated as * command completed normally */ static inline bool scsi_status_is_good(int status) { if (status < 0) return false; if (host_byte(status) == DID_NO_CONNECT) return false; /* * FIXME: bit0 is listed as reserved in SCSI-2, but is * significant in SCSI-3. For now, we follow the SCSI-2 * behaviour and ignore reserved bits. */ status &= 0xfe; return ((status == SAM_STAT_GOOD) || (status == SAM_STAT_CONDITION_MET) || /* Next two "intermediate" statuses are obsolete in SAM-4 */ (status == SAM_STAT_INTERMEDIATE) || (status == SAM_STAT_INTERMEDIATE_CONDITION_MET) || /* FIXME: this is obsolete in SAM-3 */ (status == SAM_STAT_COMMAND_TERMINATED)); } #endif /* _SCSI_SCSI_H */ |
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2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2008-2011, Intel Corporation. * * Description: Data Center Bridging netlink interface * Author: Lucy Liu <lucy.liu@intel.com> */ #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/slab.h> #include <net/netlink.h> #include <net/rtnetlink.h> #include <linux/dcbnl.h> #include <net/dcbevent.h> #include <linux/rtnetlink.h> #include <linux/init.h> #include <net/sock.h> /* Data Center Bridging (DCB) is a collection of Ethernet enhancements * intended to allow network traffic with differing requirements * (highly reliable, no drops vs. best effort vs. low latency) to operate * and co-exist on Ethernet. Current DCB features are: * * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a * framework for assigning bandwidth guarantees to traffic classes. * * Priority-based Flow Control (PFC) - provides a flow control mechanism which * can work independently for each 802.1p priority. * * Congestion Notification - provides a mechanism for end-to-end congestion * control for protocols which do not have built-in congestion management. * * More information about the emerging standards for these Ethernet features * can be found at: http://www.ieee802.org/1/pages/dcbridges.html * * This file implements an rtnetlink interface to allow configuration of DCB * features for capable devices. */ /**************** DCB attribute policies *************************************/ /* DCB netlink attributes policy */ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = { [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1}, [DCB_ATTR_STATE] = {.type = NLA_U8}, [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED}, [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED}, [DCB_ATTR_SET_ALL] = {.type = NLA_U8}, [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG}, [DCB_ATTR_CAP] = {.type = NLA_NESTED}, [DCB_ATTR_PFC_STATE] = {.type = NLA_U8}, [DCB_ATTR_BCN] = {.type = NLA_NESTED}, [DCB_ATTR_APP] = {.type = NLA_NESTED}, [DCB_ATTR_IEEE] = {.type = NLA_NESTED}, [DCB_ATTR_DCBX] = {.type = NLA_U8}, [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED}, }; /* DCB priority flow control to User Priority nested attributes */ static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = { [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8}, [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG}, }; /* DCB priority grouping nested attributes */ static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = { [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED}, [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED}, [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8}, [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG}, }; /* DCB traffic class nested attributes. */ static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = { [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8}, [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8}, [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8}, [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8}, [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG}, }; /* DCB capabilities nested attributes. */ static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = { [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG}, [DCB_CAP_ATTR_PG] = {.type = NLA_U8}, [DCB_CAP_ATTR_PFC] = {.type = NLA_U8}, [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8}, [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8}, [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8}, [DCB_CAP_ATTR_GSP] = {.type = NLA_U8}, [DCB_CAP_ATTR_BCN] = {.type = NLA_U8}, [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8}, }; /* DCB capabilities nested attributes. */ static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = { [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG}, [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8}, [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8}, }; /* DCB BCN nested attributes. */ static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = { [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8}, [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG}, [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32}, [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32}, [DCB_BCN_ATTR_ALPHA] = {.type = NLA_U32}, [DCB_BCN_ATTR_BETA] = {.type = NLA_U32}, [DCB_BCN_ATTR_GD] = {.type = NLA_U32}, [DCB_BCN_ATTR_GI] = {.type = NLA_U32}, [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32}, [DCB_BCN_ATTR_TD] = {.type = NLA_U32}, [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32}, [DCB_BCN_ATTR_W] = {.type = NLA_U32}, [DCB_BCN_ATTR_RD] = {.type = NLA_U32}, [DCB_BCN_ATTR_RU] = {.type = NLA_U32}, [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32}, [DCB_BCN_ATTR_RI] = {.type = NLA_U32}, [DCB_BCN_ATTR_C] = {.type = NLA_U32}, [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG}, }; /* DCB APP nested attributes. */ static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = { [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8}, [DCB_APP_ATTR_ID] = {.type = NLA_U16}, [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8}, }; /* IEEE 802.1Qaz nested attributes. */ static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = { [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)}, [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)}, [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED}, [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)}, [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)}, [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)}, [DCB_ATTR_DCB_BUFFER] = {.len = sizeof(struct dcbnl_buffer)}, [DCB_ATTR_DCB_APP_TRUST_TABLE] = {.type = NLA_NESTED}, }; /* DCB number of traffic classes nested attributes. */ static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = { [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG}, [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8}, [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8}, [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8}, }; static LIST_HEAD(dcb_app_list); static LIST_HEAD(dcb_rewr_list); static DEFINE_SPINLOCK(dcb_lock); static enum ieee_attrs_app dcbnl_app_attr_type_get(u8 selector) { switch (selector) { case IEEE_8021QAZ_APP_SEL_ETHERTYPE: case IEEE_8021QAZ_APP_SEL_STREAM: case IEEE_8021QAZ_APP_SEL_DGRAM: case IEEE_8021QAZ_APP_SEL_ANY: case IEEE_8021QAZ_APP_SEL_DSCP: return DCB_ATTR_IEEE_APP; case DCB_APP_SEL_PCP: return DCB_ATTR_DCB_APP; default: return DCB_ATTR_IEEE_APP_UNSPEC; } } static bool dcbnl_app_attr_type_validate(enum ieee_attrs_app type) { switch (type) { case DCB_ATTR_IEEE_APP: case DCB_ATTR_DCB_APP: return true; default: return false; } } static bool dcbnl_app_selector_validate(enum ieee_attrs_app type, u8 selector) { return dcbnl_app_attr_type_get(selector) == type; } static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq, u32 flags, struct nlmsghdr **nlhp) { struct sk_buff *skb; struct dcbmsg *dcb; struct nlmsghdr *nlh; skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!skb) return NULL; nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags); BUG_ON(!nlh); dcb = nlmsg_data(nlh); dcb->dcb_family = AF_UNSPEC; dcb->cmd = cmd; dcb->dcb_pad = 0; if (nlhp) *nlhp = nlh; return skb; } static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */ if (!netdev->dcbnl_ops->getstate) return -EOPNOTSUPP; return nla_put_u8(skb, DCB_ATTR_STATE, netdev->dcbnl_ops->getstate(netdev)); } static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest; u8 value; int ret; int i; int getall = 0; if (!tb[DCB_ATTR_PFC_CFG]) return -EINVAL; if (!netdev->dcbnl_ops->getpfccfg) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_PFC_UP_ATTR_MAX, tb[DCB_ATTR_PFC_CFG], dcbnl_pfc_up_nest, NULL); if (ret) return ret; nest = nla_nest_start_noflag(skb, DCB_ATTR_PFC_CFG); if (!nest) return -EMSGSIZE; if (data[DCB_PFC_UP_ATTR_ALL]) getall = 1; for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { if (!getall && !data[i]) continue; netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); ret = nla_put_u8(skb, i, value); if (ret) { nla_nest_cancel(skb, nest); return ret; } } nla_nest_end(skb, nest); return 0; } static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { u8 perm_addr[MAX_ADDR_LEN]; if (!netdev->dcbnl_ops->getpermhwaddr) return -EOPNOTSUPP; memset(perm_addr, 0, sizeof(perm_addr)); netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr); } static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest; u8 value; int ret; int i; int getall = 0; if (!tb[DCB_ATTR_CAP]) return -EINVAL; if (!netdev->dcbnl_ops->getcap) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP], dcbnl_cap_nest, NULL); if (ret) return ret; nest = nla_nest_start_noflag(skb, DCB_ATTR_CAP); if (!nest) return -EMSGSIZE; if (data[DCB_CAP_ATTR_ALL]) getall = 1; for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) { if (!getall && !data[i]) continue; if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) { ret = nla_put_u8(skb, i, value); if (ret) { nla_nest_cancel(skb, nest); return ret; } } } nla_nest_end(skb, nest); return 0; } static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest; u8 value; int ret; int i; int getall = 0; if (!tb[DCB_ATTR_NUMTCS]) return -EINVAL; if (!netdev->dcbnl_ops->getnumtcs) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], dcbnl_numtcs_nest, NULL); if (ret) return ret; nest = nla_nest_start_noflag(skb, DCB_ATTR_NUMTCS); if (!nest) return -EMSGSIZE; if (data[DCB_NUMTCS_ATTR_ALL]) getall = 1; for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { if (!getall && !data[i]) continue; ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value); if (!ret) { ret = nla_put_u8(skb, i, value); if (ret) { nla_nest_cancel(skb, nest); return ret; } } else return -EINVAL; } nla_nest_end(skb, nest); return 0; } static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1]; int ret; u8 value; int i; if (!tb[DCB_ATTR_NUMTCS]) return -EINVAL; if (!netdev->dcbnl_ops->setnumtcs) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS], dcbnl_numtcs_nest, NULL); if (ret) return ret; for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) { if (data[i] == NULL) continue; value = nla_get_u8(data[i]); ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value); if (ret) break; } return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret); } static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { if (!netdev->dcbnl_ops->getpfcstate) return -EOPNOTSUPP; return nla_put_u8(skb, DCB_ATTR_PFC_STATE, netdev->dcbnl_ops->getpfcstate(netdev)); } static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { u8 value; if (!tb[DCB_ATTR_PFC_STATE]) return -EINVAL; if (!netdev->dcbnl_ops->setpfcstate) return -EOPNOTSUPP; value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]); netdev->dcbnl_ops->setpfcstate(netdev, value); return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0); } static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *app_nest; struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; u16 id; u8 up, idtype; int ret; if (!tb[DCB_ATTR_APP]) return -EINVAL; ret = nla_parse_nested_deprecated(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], dcbnl_app_nest, NULL); if (ret) return ret; /* all must be non-null */ if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || (!app_tb[DCB_APP_ATTR_ID])) return -EINVAL; /* either by eth type or by socket number */ idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && (idtype != DCB_APP_IDTYPE_PORTNUM)) return -EINVAL; id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); if (netdev->dcbnl_ops->getapp) { ret = netdev->dcbnl_ops->getapp(netdev, idtype, id); if (ret < 0) return ret; else up = ret; } else { struct dcb_app app = { .selector = idtype, .protocol = id, }; up = dcb_getapp(netdev, &app); } app_nest = nla_nest_start_noflag(skb, DCB_ATTR_APP); if (!app_nest) return -EMSGSIZE; ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype); if (ret) goto out_cancel; ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id); if (ret) goto out_cancel; ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up); if (ret) goto out_cancel; nla_nest_end(skb, app_nest); return 0; out_cancel: nla_nest_cancel(skb, app_nest); return ret; } static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { int ret; u16 id; u8 up, idtype; struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1]; if (!tb[DCB_ATTR_APP]) return -EINVAL; ret = nla_parse_nested_deprecated(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP], dcbnl_app_nest, NULL); if (ret) return ret; /* all must be non-null */ if ((!app_tb[DCB_APP_ATTR_IDTYPE]) || (!app_tb[DCB_APP_ATTR_ID]) || (!app_tb[DCB_APP_ATTR_PRIORITY])) return -EINVAL; /* either by eth type or by socket number */ idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]); if ((idtype != DCB_APP_IDTYPE_ETHTYPE) && (idtype != DCB_APP_IDTYPE_PORTNUM)) return -EINVAL; id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]); up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]); if (netdev->dcbnl_ops->setapp) { ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up); if (ret < 0) return ret; } else { struct dcb_app app; app.selector = idtype; app.protocol = id; app.priority = up; ret = dcb_setapp(netdev, &app); } ret = nla_put_u8(skb, DCB_ATTR_APP, ret); dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0); return ret; } static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, struct nlattr **tb, struct sk_buff *skb, int dir) { struct nlattr *pg_nest, *param_nest, *data; struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; u8 prio, pgid, tc_pct, up_map; int ret; int getall = 0; int i; if (!tb[DCB_ATTR_PG_CFG]) return -EINVAL; if (!netdev->dcbnl_ops->getpgtccfgtx || !netdev->dcbnl_ops->getpgtccfgrx || !netdev->dcbnl_ops->getpgbwgcfgtx || !netdev->dcbnl_ops->getpgbwgcfgrx) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(pg_tb, DCB_PG_ATTR_MAX, tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest, NULL); if (ret) return ret; pg_nest = nla_nest_start_noflag(skb, DCB_ATTR_PG_CFG); if (!pg_nest) return -EMSGSIZE; if (pg_tb[DCB_PG_ATTR_TC_ALL]) getall = 1; for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { if (!getall && !pg_tb[i]) continue; if (pg_tb[DCB_PG_ATTR_TC_ALL]) data = pg_tb[DCB_PG_ATTR_TC_ALL]; else data = pg_tb[i]; ret = nla_parse_nested_deprecated(param_tb, DCB_TC_ATTR_PARAM_MAX, data, dcbnl_tc_param_nest, NULL); if (ret) goto err_pg; param_nest = nla_nest_start_noflag(skb, i); if (!param_nest) goto err_pg; pgid = DCB_ATTR_VALUE_UNDEFINED; prio = DCB_ATTR_VALUE_UNDEFINED; tc_pct = DCB_ATTR_VALUE_UNDEFINED; up_map = DCB_ATTR_VALUE_UNDEFINED; if (dir) { /* Rx */ netdev->dcbnl_ops->getpgtccfgrx(netdev, i - DCB_PG_ATTR_TC_0, &prio, &pgid, &tc_pct, &up_map); } else { /* Tx */ netdev->dcbnl_ops->getpgtccfgtx(netdev, i - DCB_PG_ATTR_TC_0, &prio, &pgid, &tc_pct, &up_map); } if (param_tb[DCB_TC_ATTR_PARAM_PGID] || param_tb[DCB_TC_ATTR_PARAM_ALL]) { ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid); if (ret) goto err_param; } if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] || param_tb[DCB_TC_ATTR_PARAM_ALL]) { ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map); if (ret) goto err_param; } if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] || param_tb[DCB_TC_ATTR_PARAM_ALL]) { ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio); if (ret) goto err_param; } if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] || param_tb[DCB_TC_ATTR_PARAM_ALL]) { ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct); if (ret) goto err_param; } nla_nest_end(skb, param_nest); } if (pg_tb[DCB_PG_ATTR_BW_ID_ALL]) getall = 1; else getall = 0; for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { if (!getall && !pg_tb[i]) continue; tc_pct = DCB_ATTR_VALUE_UNDEFINED; if (dir) { /* Rx */ netdev->dcbnl_ops->getpgbwgcfgrx(netdev, i - DCB_PG_ATTR_BW_ID_0, &tc_pct); } else { /* Tx */ netdev->dcbnl_ops->getpgbwgcfgtx(netdev, i - DCB_PG_ATTR_BW_ID_0, &tc_pct); } ret = nla_put_u8(skb, i, tc_pct); if (ret) goto err_pg; } nla_nest_end(skb, pg_nest); return 0; err_param: nla_nest_cancel(skb, param_nest); err_pg: nla_nest_cancel(skb, pg_nest); return -EMSGSIZE; } static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0); } static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1); } static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { u8 value; if (!tb[DCB_ATTR_STATE]) return -EINVAL; if (!netdev->dcbnl_ops->setstate) return -EOPNOTSUPP; value = nla_get_u8(tb[DCB_ATTR_STATE]); return nla_put_u8(skb, DCB_ATTR_STATE, netdev->dcbnl_ops->setstate(netdev, value)); } static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1]; int i; int ret; u8 value; if (!tb[DCB_ATTR_PFC_CFG]) return -EINVAL; if (!netdev->dcbnl_ops->setpfccfg) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_PFC_UP_ATTR_MAX, tb[DCB_ATTR_PFC_CFG], dcbnl_pfc_up_nest, NULL); if (ret) return ret; for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { if (data[i] == NULL) continue; value = nla_get_u8(data[i]); netdev->dcbnl_ops->setpfccfg(netdev, data[i]->nla_type - DCB_PFC_UP_ATTR_0, value); } return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0); } static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { int ret; if (!tb[DCB_ATTR_SET_ALL]) return -EINVAL; if (!netdev->dcbnl_ops->setall) return -EOPNOTSUPP; ret = nla_put_u8(skb, DCB_ATTR_SET_ALL, netdev->dcbnl_ops->setall(netdev)); dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0); return ret; } static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb, int dir) { struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1]; struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1]; int ret; int i; u8 pgid; u8 up_map; u8 prio; u8 tc_pct; if (!tb[DCB_ATTR_PG_CFG]) return -EINVAL; if (!netdev->dcbnl_ops->setpgtccfgtx || !netdev->dcbnl_ops->setpgtccfgrx || !netdev->dcbnl_ops->setpgbwgcfgtx || !netdev->dcbnl_ops->setpgbwgcfgrx) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(pg_tb, DCB_PG_ATTR_MAX, tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest, NULL); if (ret) return ret; for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { if (!pg_tb[i]) continue; ret = nla_parse_nested_deprecated(param_tb, DCB_TC_ATTR_PARAM_MAX, pg_tb[i], dcbnl_tc_param_nest, NULL); if (ret) return ret; pgid = DCB_ATTR_VALUE_UNDEFINED; prio = DCB_ATTR_VALUE_UNDEFINED; tc_pct = DCB_ATTR_VALUE_UNDEFINED; up_map = DCB_ATTR_VALUE_UNDEFINED; if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]) prio = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]); if (param_tb[DCB_TC_ATTR_PARAM_PGID]) pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]); if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT]) tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]); if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]) up_map = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]); /* dir: Tx = 0, Rx = 1 */ if (dir) { /* Rx */ netdev->dcbnl_ops->setpgtccfgrx(netdev, i - DCB_PG_ATTR_TC_0, prio, pgid, tc_pct, up_map); } else { /* Tx */ netdev->dcbnl_ops->setpgtccfgtx(netdev, i - DCB_PG_ATTR_TC_0, prio, pgid, tc_pct, up_map); } } for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { if (!pg_tb[i]) continue; tc_pct = nla_get_u8(pg_tb[i]); /* dir: Tx = 0, Rx = 1 */ if (dir) { /* Rx */ netdev->dcbnl_ops->setpgbwgcfgrx(netdev, i - DCB_PG_ATTR_BW_ID_0, tc_pct); } else { /* Tx */ netdev->dcbnl_ops->setpgbwgcfgtx(netdev, i - DCB_PG_ATTR_BW_ID_0, tc_pct); } } return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0); } static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0); } static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1); } static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *bcn_nest; struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1]; u8 value_byte; u32 value_integer; int ret; bool getall = false; int i; if (!tb[DCB_ATTR_BCN]) return -EINVAL; if (!netdev->dcbnl_ops->getbcnrp || !netdev->dcbnl_ops->getbcncfg) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(bcn_tb, DCB_BCN_ATTR_MAX, tb[DCB_ATTR_BCN], dcbnl_bcn_nest, NULL); if (ret) return ret; bcn_nest = nla_nest_start_noflag(skb, DCB_ATTR_BCN); if (!bcn_nest) return -EMSGSIZE; if (bcn_tb[DCB_BCN_ATTR_ALL]) getall = true; for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { if (!getall && !bcn_tb[i]) continue; netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0, &value_byte); ret = nla_put_u8(skb, i, value_byte); if (ret) goto err_bcn; } for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { if (!getall && !bcn_tb[i]) continue; netdev->dcbnl_ops->getbcncfg(netdev, i, &value_integer); ret = nla_put_u32(skb, i, value_integer); if (ret) goto err_bcn; } nla_nest_end(skb, bcn_nest); return 0; err_bcn: nla_nest_cancel(skb, bcn_nest); return ret; } static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_BCN_ATTR_MAX + 1]; int i; int ret; u8 value_byte; u32 value_int; if (!tb[DCB_ATTR_BCN]) return -EINVAL; if (!netdev->dcbnl_ops->setbcncfg || !netdev->dcbnl_ops->setbcnrp) return -EOPNOTSUPP; ret = nla_parse_nested_deprecated(data, DCB_BCN_ATTR_MAX, tb[DCB_ATTR_BCN], dcbnl_bcn_nest, NULL); if (ret) return ret; for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) { if (data[i] == NULL) continue; value_byte = nla_get_u8(data[i]); netdev->dcbnl_ops->setbcnrp(netdev, data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte); } for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) { if (data[i] == NULL) continue; value_int = nla_get_u32(data[i]); netdev->dcbnl_ops->setbcncfg(netdev, i, value_int); } return nla_put_u8(skb, DCB_ATTR_BCN, 0); } static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, int app_nested_type, int app_info_type, int app_entry_type) { struct dcb_peer_app_info info; struct dcb_app *table = NULL; const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; u16 app_count; int err; /** * retrieve the peer app configuration form the driver. If the driver * handlers fail exit without doing anything */ err = ops->peer_getappinfo(netdev, &info, &app_count); if (!err && app_count) { table = kmalloc_objs(struct dcb_app, app_count); if (!table) return -ENOMEM; err = ops->peer_getapptable(netdev, table); } if (!err) { u16 i; struct nlattr *app; /** * build the message, from here on the only possible failure * is due to the skb size */ err = -EMSGSIZE; app = nla_nest_start_noflag(skb, app_nested_type); if (!app) goto nla_put_failure; if (app_info_type && nla_put(skb, app_info_type, sizeof(info), &info)) goto nla_put_failure; for (i = 0; i < app_count; i++) { if (nla_put(skb, app_entry_type, sizeof(struct dcb_app), &table[i])) goto nla_put_failure; } nla_nest_end(skb, app); } err = 0; nla_put_failure: kfree(table); return err; } static int dcbnl_getapptrust(struct net_device *netdev, struct sk_buff *skb) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; enum ieee_attrs_app type; struct nlattr *apptrust; int nselectors, err, i; u8 *selectors; selectors = kzalloc(IEEE_8021QAZ_APP_SEL_MAX + 1, GFP_KERNEL); if (!selectors) return -ENOMEM; err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors); if (err) { err = 0; goto out; } apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE); if (!apptrust) { err = -EMSGSIZE; goto out; } for (i = 0; i < nselectors; i++) { type = dcbnl_app_attr_type_get(selectors[i]); err = nla_put_u8(skb, type, selectors[i]); if (err) { nla_nest_cancel(skb, apptrust); goto out; } } nla_nest_end(skb, apptrust); out: kfree(selectors); return err; } /* Set or delete APP table or rewrite table entries. The APP struct is validated * and the appropriate callback function is called. */ static int dcbnl_app_table_setdel(struct nlattr *attr, struct net_device *netdev, int (*setdel)(struct net_device *dev, struct dcb_app *app)) { struct dcb_app *app_data; enum ieee_attrs_app type; struct nlattr *attr_itr; int rem, err; nla_for_each_nested(attr_itr, attr, rem) { type = nla_type(attr_itr); if (!dcbnl_app_attr_type_validate(type)) continue; if (nla_len(attr_itr) < sizeof(struct dcb_app)) return -ERANGE; app_data = nla_data(attr_itr); if (!dcbnl_app_selector_validate(type, app_data->selector)) return -EINVAL; err = setdel(netdev, app_data); if (err) return err; } return 0; } /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; struct nlattr *ieee, *app, *rewr; struct dcb_app_type *itr; int dcbx; int err; if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) return -EMSGSIZE; ieee = nla_nest_start_noflag(skb, DCB_ATTR_IEEE); if (!ieee) return -EMSGSIZE; if (ops->ieee_getets) { struct ieee_ets ets; memset(&ets, 0, sizeof(ets)); err = ops->ieee_getets(netdev, &ets); if (!err && nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets)) return -EMSGSIZE; } if (ops->ieee_getmaxrate) { struct ieee_maxrate maxrate; memset(&maxrate, 0, sizeof(maxrate)); err = ops->ieee_getmaxrate(netdev, &maxrate); if (!err) { err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE, sizeof(maxrate), &maxrate); if (err) return -EMSGSIZE; } } if (ops->ieee_getqcn) { struct ieee_qcn qcn; memset(&qcn, 0, sizeof(qcn)); err = ops->ieee_getqcn(netdev, &qcn); if (!err) { err = nla_put(skb, DCB_ATTR_IEEE_QCN, sizeof(qcn), &qcn); if (err) return -EMSGSIZE; } } if (ops->ieee_getqcnstats) { struct ieee_qcn_stats qcn_stats; memset(&qcn_stats, 0, sizeof(qcn_stats)); err = ops->ieee_getqcnstats(netdev, &qcn_stats); if (!err) { err = nla_put(skb, DCB_ATTR_IEEE_QCN_STATS, sizeof(qcn_stats), &qcn_stats); if (err) return -EMSGSIZE; } } if (ops->ieee_getpfc) { struct ieee_pfc pfc; memset(&pfc, 0, sizeof(pfc)); err = ops->ieee_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc)) return -EMSGSIZE; } if (ops->dcbnl_getbuffer) { struct dcbnl_buffer buffer; memset(&buffer, 0, sizeof(buffer)); err = ops->dcbnl_getbuffer(netdev, &buffer); if (!err && nla_put(skb, DCB_ATTR_DCB_BUFFER, sizeof(buffer), &buffer)) return -EMSGSIZE; } app = nla_nest_start_noflag(skb, DCB_ATTR_IEEE_APP_TABLE); if (!app) return -EMSGSIZE; spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_app_list, list) { if (itr->ifindex == netdev->ifindex) { enum ieee_attrs_app type = dcbnl_app_attr_type_get(itr->app.selector); err = nla_put(skb, type, sizeof(itr->app), &itr->app); if (err) { spin_unlock_bh(&dcb_lock); return -EMSGSIZE; } } } if (netdev->dcbnl_ops->getdcbx) dcbx = netdev->dcbnl_ops->getdcbx(netdev); else dcbx = -EOPNOTSUPP; spin_unlock_bh(&dcb_lock); nla_nest_end(skb, app); rewr = nla_nest_start(skb, DCB_ATTR_DCB_REWR_TABLE); if (!rewr) return -EMSGSIZE; spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_rewr_list, list) { if (itr->ifindex == netdev->ifindex) { enum ieee_attrs_app type = dcbnl_app_attr_type_get(itr->app.selector); err = nla_put(skb, type, sizeof(itr->app), &itr->app); if (err) { spin_unlock_bh(&dcb_lock); nla_nest_cancel(skb, rewr); return -EMSGSIZE; } } } spin_unlock_bh(&dcb_lock); nla_nest_end(skb, rewr); if (ops->dcbnl_getapptrust) { err = dcbnl_getapptrust(netdev, skb); if (err) return err; } /* get peer info if available */ if (ops->ieee_peer_getets) { struct ieee_ets ets; memset(&ets, 0, sizeof(ets)); err = ops->ieee_peer_getets(netdev, &ets); if (!err && nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets)) return -EMSGSIZE; } if (ops->ieee_peer_getpfc) { struct ieee_pfc pfc; memset(&pfc, 0, sizeof(pfc)); err = ops->ieee_peer_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc)) return -EMSGSIZE; } if (ops->peer_getappinfo && ops->peer_getapptable) { err = dcbnl_build_peer_app(netdev, skb, DCB_ATTR_IEEE_PEER_APP, DCB_ATTR_IEEE_APP_UNSPEC, DCB_ATTR_IEEE_APP); if (err) return -EMSGSIZE; } nla_nest_end(skb, ieee); if (dcbx >= 0) { err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); if (err) return -EMSGSIZE; } return 0; } static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev, int dir) { u8 pgid, up_map, prio, tc_pct; const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG; struct nlattr *pg = nla_nest_start_noflag(skb, i); if (!pg) return -EMSGSIZE; for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) { struct nlattr *tc_nest = nla_nest_start_noflag(skb, i); if (!tc_nest) return -EMSGSIZE; pgid = DCB_ATTR_VALUE_UNDEFINED; prio = DCB_ATTR_VALUE_UNDEFINED; tc_pct = DCB_ATTR_VALUE_UNDEFINED; up_map = DCB_ATTR_VALUE_UNDEFINED; if (!dir) ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0, &prio, &pgid, &tc_pct, &up_map); else ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0, &prio, &pgid, &tc_pct, &up_map); if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) || nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) || nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) || nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct)) return -EMSGSIZE; nla_nest_end(skb, tc_nest); } for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) { tc_pct = DCB_ATTR_VALUE_UNDEFINED; if (!dir) ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0, &tc_pct); else ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0, &tc_pct); if (nla_put_u8(skb, i, tc_pct)) return -EMSGSIZE; } nla_nest_end(skb, pg); return 0; } static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) { struct nlattr *cee, *app; struct dcb_app_type *itr; const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; int dcbx, i, err = -EMSGSIZE; u8 value; if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name)) goto nla_put_failure; cee = nla_nest_start_noflag(skb, DCB_ATTR_CEE); if (!cee) goto nla_put_failure; /* local pg */ if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) { err = dcbnl_cee_pg_fill(skb, netdev, 1); if (err) goto nla_put_failure; } if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) { err = dcbnl_cee_pg_fill(skb, netdev, 0); if (err) goto nla_put_failure; } /* local pfc */ if (ops->getpfccfg) { struct nlattr *pfc_nest = nla_nest_start_noflag(skb, DCB_ATTR_CEE_PFC); if (!pfc_nest) goto nla_put_failure; for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) { ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value); if (nla_put_u8(skb, i, value)) goto nla_put_failure; } nla_nest_end(skb, pfc_nest); } /* local app */ spin_lock_bh(&dcb_lock); app = nla_nest_start_noflag(skb, DCB_ATTR_CEE_APP_TABLE); if (!app) goto dcb_unlock; list_for_each_entry(itr, &dcb_app_list, list) { if (itr->ifindex == netdev->ifindex) { struct nlattr *app_nest = nla_nest_start_noflag(skb, DCB_ATTR_APP); if (!app_nest) goto dcb_unlock; err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, itr->app.selector); if (err) goto dcb_unlock; err = nla_put_u16(skb, DCB_APP_ATTR_ID, itr->app.protocol); if (err) goto dcb_unlock; err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, itr->app.priority); if (err) goto dcb_unlock; nla_nest_end(skb, app_nest); } } nla_nest_end(skb, app); if (netdev->dcbnl_ops->getdcbx) dcbx = netdev->dcbnl_ops->getdcbx(netdev); else dcbx = -EOPNOTSUPP; spin_unlock_bh(&dcb_lock); /* features flags */ if (ops->getfeatcfg) { struct nlattr *feat = nla_nest_start_noflag(skb, DCB_ATTR_CEE_FEAT); if (!feat) goto nla_put_failure; for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX; i++) if (!ops->getfeatcfg(netdev, i, &value) && nla_put_u8(skb, i, value)) goto nla_put_failure; nla_nest_end(skb, feat); } /* peer info if available */ if (ops->cee_peer_getpg) { struct cee_pg pg; memset(&pg, 0, sizeof(pg)); err = ops->cee_peer_getpg(netdev, &pg); if (!err && nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg)) goto nla_put_failure; } if (ops->cee_peer_getpfc) { struct cee_pfc pfc; memset(&pfc, 0, sizeof(pfc)); err = ops->cee_peer_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc)) goto nla_put_failure; } if (ops->peer_getappinfo && ops->peer_getapptable) { err = dcbnl_build_peer_app(netdev, skb, DCB_ATTR_CEE_PEER_APP_TABLE, DCB_ATTR_CEE_PEER_APP_INFO, DCB_ATTR_CEE_PEER_APP); if (err) goto nla_put_failure; } nla_nest_end(skb, cee); /* DCBX state */ if (dcbx >= 0) { err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx); if (err) goto nla_put_failure; } return 0; dcb_unlock: spin_unlock_bh(&dcb_lock); nla_put_failure: err = -EMSGSIZE; return err; } static int dcbnl_notify(struct net_device *dev, int event, int cmd, u32 seq, u32 portid, int dcbx_ver) { struct net *net = dev_net(dev); struct sk_buff *skb; struct nlmsghdr *nlh; const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops; int err; if (!ops) return -EOPNOTSUPP; skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh); if (!skb) return -ENOMEM; if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE) err = dcbnl_ieee_fill(skb, dev); else err = dcbnl_cee_fill(skb, dev); if (err < 0) { /* Report error to broadcast listeners */ nlmsg_free(skb); rtnl_set_sk_err(net, RTNLGRP_DCB, err); } else { /* End nlmsg and notify broadcast listeners */ nlmsg_end(skb, nlh); rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL); } return err; } int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd, u32 seq, u32 portid) { return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE); } EXPORT_SYMBOL(dcbnl_ieee_notify); int dcbnl_cee_notify(struct net_device *dev, int event, int cmd, u32 seq, u32 portid) { return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE); } EXPORT_SYMBOL(dcbnl_cee_notify); /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb SET commands. * If any requested operation can not be completed * the entire msg is aborted and error value is returned. * No attempt is made to reconcile the case where only part of the * cmd can be completed. */ static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; int prio; int err; if (!ops) return -EOPNOTSUPP; if (!tb[DCB_ATTR_IEEE]) return -EINVAL; err = nla_parse_nested_deprecated(ieee, DCB_ATTR_IEEE_MAX, tb[DCB_ATTR_IEEE], dcbnl_ieee_policy, NULL); if (err) return err; if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) { struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]); err = ops->ieee_setets(netdev, ets); if (err) goto err; } if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) { struct ieee_maxrate *maxrate = nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]); err = ops->ieee_setmaxrate(netdev, maxrate); if (err) goto err; } if (ieee[DCB_ATTR_IEEE_QCN] && ops->ieee_setqcn) { struct ieee_qcn *qcn = nla_data(ieee[DCB_ATTR_IEEE_QCN]); err = ops->ieee_setqcn(netdev, qcn); if (err) goto err; } if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) { struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]); err = ops->ieee_setpfc(netdev, pfc); if (err) goto err; } if (ieee[DCB_ATTR_DCB_BUFFER] && ops->dcbnl_setbuffer) { struct dcbnl_buffer *buffer = nla_data(ieee[DCB_ATTR_DCB_BUFFER]); for (prio = 0; prio < ARRAY_SIZE(buffer->prio2buffer); prio++) { if (buffer->prio2buffer[prio] >= DCBX_MAX_BUFFERS) { err = -EINVAL; goto err; } } err = ops->dcbnl_setbuffer(netdev, buffer); if (err) goto err; } if (ieee[DCB_ATTR_DCB_REWR_TABLE]) { err = dcbnl_app_table_setdel(ieee[DCB_ATTR_DCB_REWR_TABLE], netdev, ops->dcbnl_setrewr ?: dcb_setrewr); if (err) goto err; } if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { err = dcbnl_app_table_setdel(ieee[DCB_ATTR_IEEE_APP_TABLE], netdev, ops->ieee_setapp ?: dcb_ieee_setapp); if (err) goto err; } if (ieee[DCB_ATTR_DCB_APP_TRUST_TABLE]) { u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; struct nlattr *attr; int nselectors = 0; int rem; if (!ops->dcbnl_setapptrust) { err = -EOPNOTSUPP; goto err; } nla_for_each_nested(attr, ieee[DCB_ATTR_DCB_APP_TRUST_TABLE], rem) { enum ieee_attrs_app type = nla_type(attr); u8 selector; int i; if (!dcbnl_app_attr_type_validate(type) || nla_len(attr) != 1 || nselectors >= sizeof(selectors)) { err = -EINVAL; goto err; } selector = nla_get_u8(attr); if (!dcbnl_app_selector_validate(type, selector)) { err = -EINVAL; goto err; } /* Duplicate selector ? */ for (i = 0; i < nselectors; i++) { if (selectors[i] == selector) { err = -EINVAL; goto err; } } selectors[nselectors++] = selector; } err = ops->dcbnl_setapptrust(netdev, selectors, nselectors); if (err) goto err; } err: err = nla_put_u8(skb, DCB_ATTR_IEEE, err); dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0); return err; } static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; if (!ops) return -EOPNOTSUPP; return dcbnl_ieee_fill(skb, netdev); } static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1]; int err; if (!ops) return -EOPNOTSUPP; if (!tb[DCB_ATTR_IEEE]) return -EINVAL; err = nla_parse_nested_deprecated(ieee, DCB_ATTR_IEEE_MAX, tb[DCB_ATTR_IEEE], dcbnl_ieee_policy, NULL); if (err) return err; if (ieee[DCB_ATTR_IEEE_APP_TABLE]) { err = dcbnl_app_table_setdel(ieee[DCB_ATTR_IEEE_APP_TABLE], netdev, ops->ieee_delapp ?: dcb_ieee_delapp); if (err) goto err; } if (ieee[DCB_ATTR_DCB_REWR_TABLE]) { err = dcbnl_app_table_setdel(ieee[DCB_ATTR_DCB_REWR_TABLE], netdev, ops->dcbnl_delrewr ?: dcb_delrewr); if (err) goto err; } err: err = nla_put_u8(skb, DCB_ATTR_IEEE, err); dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0); return err; } /* DCBX configuration */ static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { if (!netdev->dcbnl_ops->getdcbx) return -EOPNOTSUPP; return nla_put_u8(skb, DCB_ATTR_DCBX, netdev->dcbnl_ops->getdcbx(netdev)); } static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { u8 value; if (!netdev->dcbnl_ops->setdcbx) return -EOPNOTSUPP; if (!tb[DCB_ATTR_DCBX]) return -EINVAL; value = nla_get_u8(tb[DCB_ATTR_DCBX]); return nla_put_u8(skb, DCB_ATTR_DCBX, netdev->dcbnl_ops->setdcbx(netdev, value)); } static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest; u8 value; int ret, i; int getall = 0; if (!netdev->dcbnl_ops->getfeatcfg) return -EOPNOTSUPP; if (!tb[DCB_ATTR_FEATCFG]) return -EINVAL; ret = nla_parse_nested_deprecated(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], dcbnl_featcfg_nest, NULL); if (ret) return ret; nest = nla_nest_start_noflag(skb, DCB_ATTR_FEATCFG); if (!nest) return -EMSGSIZE; if (data[DCB_FEATCFG_ATTR_ALL]) getall = 1; for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { if (!getall && !data[i]) continue; ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value); if (!ret) ret = nla_put_u8(skb, i, value); if (ret) { nla_nest_cancel(skb, nest); goto nla_put_failure; } } nla_nest_end(skb, nest); nla_put_failure: return ret; } static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1]; int ret, i; u8 value; if (!netdev->dcbnl_ops->setfeatcfg) return -ENOTSUPP; if (!tb[DCB_ATTR_FEATCFG]) return -EINVAL; ret = nla_parse_nested_deprecated(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG], dcbnl_featcfg_nest, NULL); if (ret) goto err; for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) { if (data[i] == NULL) continue; value = nla_get_u8(data[i]); ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value); if (ret) goto err; } err: ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret); return ret; } /* Handle CEE DCBX GET commands. */ static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh, u32 seq, struct nlattr **tb, struct sk_buff *skb) { const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; if (!ops) return -EOPNOTSUPP; return dcbnl_cee_fill(skb, netdev); } struct reply_func { /* reply netlink message type */ int type; /* function to fill message contents */ int (*cb)(struct net_device *, struct nlmsghdr *, u32, struct nlattr **, struct sk_buff *); }; static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = { [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate }, [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate }, [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg }, [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg }, [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr }, [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap }, [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs }, [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs }, [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate }, [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate }, [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp }, [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp }, [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg }, [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg }, [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg }, [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg }, [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall }, [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg }, [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg }, [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get }, [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set }, [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del }, [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx }, [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx }, [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg }, [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg }, [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get }, }; static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct net_device *netdev; struct dcbmsg *dcb = nlmsg_data(nlh); struct nlattr *tb[DCB_ATTR_MAX + 1]; u32 portid = NETLINK_CB(skb).portid; int ret = -EINVAL; struct sk_buff *reply_skb; struct nlmsghdr *reply_nlh = NULL; const struct reply_func *fn; if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; ret = nlmsg_parse_deprecated(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, dcbnl_rtnl_policy, extack); if (ret < 0) return ret; if (dcb->cmd > DCB_CMD_MAX) return -EINVAL; /* check if a reply function has been defined for the command */ fn = &reply_funcs[dcb->cmd]; if (!fn->cb) return -EOPNOTSUPP; if (fn->type == RTM_SETDCB && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!tb[DCB_ATTR_IFNAME]) return -EINVAL; netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME])); if (!netdev) return -ENODEV; if (!netdev->dcbnl_ops) return -EOPNOTSUPP; reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq, nlh->nlmsg_flags, &reply_nlh); if (!reply_skb) return -ENOMEM; ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb); if (ret < 0) { nlmsg_free(reply_skb); goto out; } nlmsg_end(reply_skb, reply_nlh); ret = rtnl_unicast(reply_skb, net, portid); out: return ret; } static struct dcb_app_type *dcb_rewr_lookup(const struct dcb_app *app, int ifindex, int proto) { struct dcb_app_type *itr; list_for_each_entry(itr, &dcb_rewr_list, list) { if (itr->app.selector == app->selector && itr->app.priority == app->priority && itr->ifindex == ifindex && ((proto == -1) || itr->app.protocol == proto)) return itr; } return NULL; } static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app, int ifindex, int prio) { struct dcb_app_type *itr; list_for_each_entry(itr, &dcb_app_list, list) { if (itr->app.selector == app->selector && itr->app.protocol == app->protocol && itr->ifindex == ifindex && ((prio == -1) || itr->app.priority == prio)) return itr; } return NULL; } static int dcb_app_add(struct list_head *list, const struct dcb_app *app, int ifindex) { struct dcb_app_type *entry; entry = kmalloc_obj(*entry, GFP_ATOMIC); if (!entry) return -ENOMEM; memcpy(&entry->app, app, sizeof(*app)); entry->ifindex = ifindex; list_add(&entry->list, list); return 0; } /** * dcb_getapp - retrieve the DCBX application user priority * @dev: network interface * @app: application to get user priority of * * On success returns a non-zero 802.1p user priority bitmap * otherwise returns 0 as the invalid user priority bitmap to * indicate an error. */ u8 dcb_getapp(struct net_device *dev, struct dcb_app *app) { struct dcb_app_type *itr; u8 prio = 0; spin_lock_bh(&dcb_lock); itr = dcb_app_lookup(app, dev->ifindex, -1); if (itr) prio = itr->app.priority; spin_unlock_bh(&dcb_lock); return prio; } EXPORT_SYMBOL(dcb_getapp); /** * dcb_setapp - add CEE dcb application data to app list * @dev: network interface * @new: application data to add * * Priority 0 is an invalid priority in CEE spec. This routine * removes applications from the app list if the priority is * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap */ int dcb_setapp(struct net_device *dev, struct dcb_app *new) { struct dcb_app_type *itr; struct dcb_app_type event; int err = 0; event.ifindex = dev->ifindex; memcpy(&event.app, new, sizeof(event.app)); if (dev->dcbnl_ops->getdcbx) event.dcbx = dev->dcbnl_ops->getdcbx(dev); spin_lock_bh(&dcb_lock); /* Search for existing match and replace */ itr = dcb_app_lookup(new, dev->ifindex, -1); if (itr) { if (new->priority) itr->app.priority = new->priority; else { list_del(&itr->list); kfree(itr); } goto out; } /* App type does not exist add new application type */ if (new->priority) err = dcb_app_add(&dcb_app_list, new, dev->ifindex); out: spin_unlock_bh(&dcb_lock); if (!err) call_dcbevent_notifiers(DCB_APP_EVENT, &event); return err; } EXPORT_SYMBOL(dcb_setapp); /** * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority * @dev: network interface * @app: where to store the retrieve application data * * Helper routine which on success returns a non-zero 802.1Qaz user * priority bitmap otherwise returns 0 to indicate the dcb_app was * not found in APP list. */ u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app) { struct dcb_app_type *itr; u8 prio = 0; spin_lock_bh(&dcb_lock); itr = dcb_app_lookup(app, dev->ifindex, -1); if (itr) prio |= 1 << itr->app.priority; spin_unlock_bh(&dcb_lock); return prio; } EXPORT_SYMBOL(dcb_ieee_getapp_mask); /* Get protocol value from rewrite entry. */ u16 dcb_getrewr(struct net_device *dev, struct dcb_app *app) { struct dcb_app_type *itr; u16 proto = 0; spin_lock_bh(&dcb_lock); itr = dcb_rewr_lookup(app, dev->ifindex, -1); if (itr) proto = itr->app.protocol; spin_unlock_bh(&dcb_lock); return proto; } EXPORT_SYMBOL(dcb_getrewr); /* Add rewrite entry to the rewrite list. */ int dcb_setrewr(struct net_device *dev, struct dcb_app *new) { int err; spin_lock_bh(&dcb_lock); /* Search for existing match and abort if found. */ if (dcb_rewr_lookup(new, dev->ifindex, new->protocol)) { err = -EEXIST; goto out; } err = dcb_app_add(&dcb_rewr_list, new, dev->ifindex); out: spin_unlock_bh(&dcb_lock); return err; } EXPORT_SYMBOL(dcb_setrewr); /* Delete rewrite entry from the rewrite list. */ int dcb_delrewr(struct net_device *dev, struct dcb_app *del) { struct dcb_app_type *itr; int err = -ENOENT; spin_lock_bh(&dcb_lock); /* Search for existing match and remove it. */ itr = dcb_rewr_lookup(del, dev->ifindex, del->protocol); if (itr) { list_del(&itr->list); kfree(itr); err = 0; } spin_unlock_bh(&dcb_lock); return err; } EXPORT_SYMBOL(dcb_delrewr); /** * dcb_ieee_setapp - add IEEE dcb application data to app list * @dev: network interface * @new: application data to add * * This adds Application data to the list. Multiple application * entries may exists for the same selector and protocol as long * as the priorities are different. Priority is expected to be a * 3-bit unsigned integer */ int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new) { struct dcb_app_type event; int err = 0; event.ifindex = dev->ifindex; memcpy(&event.app, new, sizeof(event.app)); if (dev->dcbnl_ops->getdcbx) event.dcbx = dev->dcbnl_ops->getdcbx(dev); spin_lock_bh(&dcb_lock); /* Search for existing match and abort if found */ if (dcb_app_lookup(new, dev->ifindex, new->priority)) { err = -EEXIST; goto out; } err = dcb_app_add(&dcb_app_list, new, dev->ifindex); out: spin_unlock_bh(&dcb_lock); if (!err) call_dcbevent_notifiers(DCB_APP_EVENT, &event); return err; } EXPORT_SYMBOL(dcb_ieee_setapp); /** * dcb_ieee_delapp - delete IEEE dcb application data from list * @dev: network interface * @del: application data to delete * * This removes a matching APP data from the APP list */ int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) { struct dcb_app_type *itr; struct dcb_app_type event; int err = -ENOENT; event.ifindex = dev->ifindex; memcpy(&event.app, del, sizeof(event.app)); if (dev->dcbnl_ops->getdcbx) event.dcbx = dev->dcbnl_ops->getdcbx(dev); spin_lock_bh(&dcb_lock); /* Search for existing match and remove it. */ if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) { list_del(&itr->list); kfree(itr); err = 0; } spin_unlock_bh(&dcb_lock); if (!err) call_dcbevent_notifiers(DCB_APP_EVENT, &event); return err; } EXPORT_SYMBOL(dcb_ieee_delapp); /* dcb_getrewr_prio_pcp_mask_map - For a given device, find mapping from * priorities to the PCP and DEI values assigned to that priority. */ void dcb_getrewr_prio_pcp_mask_map(const struct net_device *dev, struct dcb_rewr_prio_pcp_map *p_map) { int ifindex = dev->ifindex; struct dcb_app_type *itr; u8 prio; memset(p_map->map, 0, sizeof(p_map->map)); spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_rewr_list, list) { if (itr->ifindex == ifindex && itr->app.selector == DCB_APP_SEL_PCP && itr->app.protocol < 16 && itr->app.priority < IEEE_8021QAZ_MAX_TCS) { prio = itr->app.priority; p_map->map[prio] |= 1 << itr->app.protocol; } } spin_unlock_bh(&dcb_lock); } EXPORT_SYMBOL(dcb_getrewr_prio_pcp_mask_map); /* dcb_getrewr_prio_dscp_mask_map - For a given device, find mapping from * priorities to the DSCP values assigned to that priority. */ void dcb_getrewr_prio_dscp_mask_map(const struct net_device *dev, struct dcb_ieee_app_prio_map *p_map) { int ifindex = dev->ifindex; struct dcb_app_type *itr; u8 prio; memset(p_map->map, 0, sizeof(p_map->map)); spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_rewr_list, list) { if (itr->ifindex == ifindex && itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && itr->app.protocol < 64 && itr->app.priority < IEEE_8021QAZ_MAX_TCS) { prio = itr->app.priority; p_map->map[prio] |= 1ULL << itr->app.protocol; } } spin_unlock_bh(&dcb_lock); } EXPORT_SYMBOL(dcb_getrewr_prio_dscp_mask_map); /* * dcb_ieee_getapp_prio_dscp_mask_map - For a given device, find mapping from * priorities to the DSCP values assigned to that priority. Initialize p_map * such that each map element holds a bit mask of DSCP values configured for * that priority by APP entries. */ void dcb_ieee_getapp_prio_dscp_mask_map(const struct net_device *dev, struct dcb_ieee_app_prio_map *p_map) { int ifindex = dev->ifindex; struct dcb_app_type *itr; u8 prio; memset(p_map->map, 0, sizeof(p_map->map)); spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_app_list, list) { if (itr->ifindex == ifindex && itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && itr->app.protocol < 64 && itr->app.priority < IEEE_8021QAZ_MAX_TCS) { prio = itr->app.priority; p_map->map[prio] |= 1ULL << itr->app.protocol; } } spin_unlock_bh(&dcb_lock); } EXPORT_SYMBOL(dcb_ieee_getapp_prio_dscp_mask_map); /* * dcb_ieee_getapp_dscp_prio_mask_map - For a given device, find mapping from * DSCP values to the priorities assigned to that DSCP value. Initialize p_map * such that each map element holds a bit mask of priorities configured for a * given DSCP value by APP entries. */ void dcb_ieee_getapp_dscp_prio_mask_map(const struct net_device *dev, struct dcb_ieee_app_dscp_map *p_map) { int ifindex = dev->ifindex; struct dcb_app_type *itr; memset(p_map->map, 0, sizeof(p_map->map)); spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_app_list, list) { if (itr->ifindex == ifindex && itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && itr->app.protocol < 64 && itr->app.priority < IEEE_8021QAZ_MAX_TCS) p_map->map[itr->app.protocol] |= 1 << itr->app.priority; } spin_unlock_bh(&dcb_lock); } EXPORT_SYMBOL(dcb_ieee_getapp_dscp_prio_mask_map); /* * Per 802.1Q-2014, the selector value of 1 is used for matching on Ethernet * type, with valid PID values >= 1536. A special meaning is then assigned to * protocol value of 0: "default priority. For use when priority is not * otherwise specified". * * dcb_ieee_getapp_default_prio_mask - For a given device, find all APP entries * of the form {$PRIO, ETHERTYPE, 0} and construct a bit mask of all default * priorities set by these entries. */ u8 dcb_ieee_getapp_default_prio_mask(const struct net_device *dev) { int ifindex = dev->ifindex; struct dcb_app_type *itr; u8 mask = 0; spin_lock_bh(&dcb_lock); list_for_each_entry(itr, &dcb_app_list, list) { if (itr->ifindex == ifindex && itr->app.selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && itr->app.protocol == 0 && itr->app.priority < IEEE_8021QAZ_MAX_TCS) mask |= 1 << itr->app.priority; } spin_unlock_bh(&dcb_lock); return mask; } EXPORT_SYMBOL(dcb_ieee_getapp_default_prio_mask); static void dcbnl_flush_dev(struct net_device *dev) { struct dcb_app_type *itr, *tmp; spin_lock_bh(&dcb_lock); list_for_each_entry_safe(itr, tmp, &dcb_app_list, list) { if (itr->ifindex == dev->ifindex) { list_del(&itr->list); kfree(itr); } } spin_unlock_bh(&dcb_lock); } static int dcbnl_netdevice_event(struct notifier_block *nb, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); switch (event) { case NETDEV_UNREGISTER: if (!dev->dcbnl_ops) return NOTIFY_DONE; dcbnl_flush_dev(dev); return NOTIFY_OK; default: return NOTIFY_DONE; } } static struct notifier_block dcbnl_nb __read_mostly = { .notifier_call = dcbnl_netdevice_event, }; static const struct rtnl_msg_handler dcbnl_rtnl_msg_handlers[] __initconst = { {.msgtype = RTM_GETDCB, .doit = dcb_doit}, {.msgtype = RTM_SETDCB, .doit = dcb_doit}, }; static int __init dcbnl_init(void) { int err; err = register_netdevice_notifier(&dcbnl_nb); if (err) return err; rtnl_register_many(dcbnl_rtnl_msg_handlers); return 0; } device_initcall(dcbnl_init); |
| 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_STRING_HELPERS_H_ #define _LINUX_STRING_HELPERS_H_ #include <linux/bits.h> #include <linux/ctype.h> #include <linux/string_choices.h> #include <linux/string.h> #include <linux/types.h> struct device; struct file; struct task_struct; static inline bool string_is_terminated(const char *s, int len) { return memchr(s, '\0', len) ? true : false; } /* Descriptions of the types of units to print in */ enum string_size_units { STRING_UNITS_10, /* use powers of 10^3 (standard SI) */ STRING_UNITS_2, /* use binary powers of 2^10 */ STRING_UNITS_MASK = BIT(0), /* Modifiers */ STRING_UNITS_NO_SPACE = BIT(30), STRING_UNITS_NO_BYTES = BIT(31), }; int string_get_size(u64 size, u64 blk_size, const enum string_size_units units, char *buf, int len); int parse_int_array(const char *buf, size_t count, int **array); int parse_int_array_user(const char __user *from, size_t count, int **array); #define UNESCAPE_SPACE BIT(0) #define UNESCAPE_OCTAL BIT(1) #define UNESCAPE_HEX BIT(2) #define UNESCAPE_SPECIAL BIT(3) #define UNESCAPE_ANY \ (UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL) #define UNESCAPE_ALL_MASK GENMASK(3, 0) int string_unescape(char *src, char *dst, size_t size, unsigned int flags); static inline int string_unescape_inplace(char *buf, unsigned int flags) { return string_unescape(buf, buf, 0, flags); } static inline int string_unescape_any(char *src, char *dst, size_t size) { return string_unescape(src, dst, size, UNESCAPE_ANY); } static inline int string_unescape_any_inplace(char *buf) { return string_unescape_any(buf, buf, 0); } #define ESCAPE_SPACE BIT(0) #define ESCAPE_SPECIAL BIT(1) #define ESCAPE_NULL BIT(2) #define ESCAPE_OCTAL BIT(3) #define ESCAPE_ANY \ (ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL) #define ESCAPE_NP BIT(4) #define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP) #define ESCAPE_HEX BIT(5) #define ESCAPE_NA BIT(6) #define ESCAPE_NAP BIT(7) #define ESCAPE_APPEND BIT(8) #define ESCAPE_ALL_MASK GENMASK(8, 0) int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz, unsigned int flags, const char *only); static inline int string_escape_mem_any_np(const char *src, size_t isz, char *dst, size_t osz, const char *only) { return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, only); } static inline int string_escape_str(const char *src, char *dst, size_t sz, unsigned int flags, const char *only) { return string_escape_mem(src, strlen(src), dst, sz, flags, only); } static inline int string_escape_str_any_np(const char *src, char *dst, size_t sz, const char *only) { return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only); } static inline void string_upper(char *dst, const char *src) { do { *dst++ = toupper(*src); } while (*src++); } static inline void string_lower(char *dst, const char *src) { do { *dst++ = tolower(*src); } while (*src++); } char *kstrdup_quotable(const char *src, gfp_t gfp); char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp); char *kstrdup_quotable_file(struct file *file, gfp_t gfp); char *kstrdup_and_replace(const char *src, char old, char new, gfp_t gfp); char **kasprintf_strarray(gfp_t gfp, const char *prefix, size_t n); void kfree_strarray(char **array, size_t n); char **devm_kasprintf_strarray(struct device *dev, const char *prefix, size_t n); #endif |
| 6 6 6 6 6 6 6 83 84 83 25 25 25 6 6 6 72 78 72 19 92 11 91 11 80 80 23 4 4 4 29 46 29 23 23 158 94 74 74 148 149 46 109 54 147 80 79 1 8 13 70 14 79 23 23 9 18 12 23 29 29 1 8 29 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 | // SPDX-License-Identifier: GPL-2.0-or-later /* * net/switchdev/switchdev.c - Switch device API * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us> * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/notifier.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/if_bridge.h> #include <linux/list.h> #include <linux/workqueue.h> #include <linux/if_vlan.h> #include <linux/rtnetlink.h> #include <net/switchdev.h> static bool switchdev_obj_eq(const struct switchdev_obj *a, const struct switchdev_obj *b) { const struct switchdev_obj_port_vlan *va, *vb; const struct switchdev_obj_port_mdb *ma, *mb; if (a->id != b->id || a->orig_dev != b->orig_dev) return false; switch (a->id) { case SWITCHDEV_OBJ_ID_PORT_VLAN: va = SWITCHDEV_OBJ_PORT_VLAN(a); vb = SWITCHDEV_OBJ_PORT_VLAN(b); return va->flags == vb->flags && va->vid == vb->vid && va->changed == vb->changed; case SWITCHDEV_OBJ_ID_PORT_MDB: case SWITCHDEV_OBJ_ID_HOST_MDB: ma = SWITCHDEV_OBJ_PORT_MDB(a); mb = SWITCHDEV_OBJ_PORT_MDB(b); return ma->vid == mb->vid && ether_addr_equal(ma->addr, mb->addr); default: break; } BUG(); } static LIST_HEAD(deferred); static DEFINE_SPINLOCK(deferred_lock); typedef void switchdev_deferred_func_t(struct net_device *dev, const void *data); struct switchdev_deferred_item { struct list_head list; struct net_device *dev; netdevice_tracker dev_tracker; switchdev_deferred_func_t *func; unsigned long data[]; }; static struct switchdev_deferred_item *switchdev_deferred_dequeue(void) { struct switchdev_deferred_item *dfitem; spin_lock_bh(&deferred_lock); if (list_empty(&deferred)) { dfitem = NULL; goto unlock; } dfitem = list_first_entry(&deferred, struct switchdev_deferred_item, list); list_del(&dfitem->list); unlock: spin_unlock_bh(&deferred_lock); return dfitem; } /** * switchdev_deferred_process - Process ops in deferred queue * * Called to flush the ops currently queued in deferred ops queue. * rtnl_lock must be held. */ void switchdev_deferred_process(void) { struct switchdev_deferred_item *dfitem; ASSERT_RTNL(); while ((dfitem = switchdev_deferred_dequeue())) { dfitem->func(dfitem->dev, dfitem->data); netdev_put(dfitem->dev, &dfitem->dev_tracker); kfree(dfitem); } } EXPORT_SYMBOL_GPL(switchdev_deferred_process); static void switchdev_deferred_process_work(struct work_struct *work) { rtnl_lock(); switchdev_deferred_process(); rtnl_unlock(); } static DECLARE_WORK(deferred_process_work, switchdev_deferred_process_work); static int switchdev_deferred_enqueue(struct net_device *dev, const void *data, size_t data_len, switchdev_deferred_func_t *func) { struct switchdev_deferred_item *dfitem; dfitem = kmalloc_flex(*dfitem, data, data_len, GFP_ATOMIC); if (!dfitem) return -ENOMEM; dfitem->dev = dev; dfitem->func = func; memcpy(dfitem->data, data, data_len); netdev_hold(dev, &dfitem->dev_tracker, GFP_ATOMIC); spin_lock_bh(&deferred_lock); list_add_tail(&dfitem->list, &deferred); spin_unlock_bh(&deferred_lock); schedule_work(&deferred_process_work); return 0; } static int switchdev_port_attr_notify(enum switchdev_notifier_type nt, struct net_device *dev, const struct switchdev_attr *attr, struct netlink_ext_ack *extack) { int err; int rc; struct switchdev_notifier_port_attr_info attr_info = { .attr = attr, .handled = false, }; rc = call_switchdev_blocking_notifiers(nt, dev, &attr_info.info, extack); err = notifier_to_errno(rc); if (err) { WARN_ON(!attr_info.handled); return err; } if (!attr_info.handled) return -EOPNOTSUPP; return 0; } static int switchdev_port_attr_set_now(struct net_device *dev, const struct switchdev_attr *attr, struct netlink_ext_ack *extack) { return switchdev_port_attr_notify(SWITCHDEV_PORT_ATTR_SET, dev, attr, extack); } static void switchdev_port_attr_set_deferred(struct net_device *dev, const void *data) { const struct switchdev_attr *attr = data; int err; err = switchdev_port_attr_set_now(dev, attr, NULL); if (err && err != -EOPNOTSUPP) netdev_err(dev, "failed (err=%d) to set attribute (id=%d)\n", err, attr->id); if (attr->complete) attr->complete(dev, err, attr->complete_priv); } static int switchdev_port_attr_set_defer(struct net_device *dev, const struct switchdev_attr *attr) { return switchdev_deferred_enqueue(dev, attr, sizeof(*attr), switchdev_port_attr_set_deferred); } /** * switchdev_port_attr_set - Set port attribute * * @dev: port device * @attr: attribute to set * @extack: netlink extended ack, for error message propagation * * rtnl_lock must be held and must not be in atomic section, * in case SWITCHDEV_F_DEFER flag is not set. */ int switchdev_port_attr_set(struct net_device *dev, const struct switchdev_attr *attr, struct netlink_ext_ack *extack) { if (attr->flags & SWITCHDEV_F_DEFER) return switchdev_port_attr_set_defer(dev, attr); ASSERT_RTNL(); return switchdev_port_attr_set_now(dev, attr, extack); } EXPORT_SYMBOL_GPL(switchdev_port_attr_set); static size_t switchdev_obj_size(const struct switchdev_obj *obj) { switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_VLAN: return sizeof(struct switchdev_obj_port_vlan); case SWITCHDEV_OBJ_ID_PORT_MDB: return sizeof(struct switchdev_obj_port_mdb); case SWITCHDEV_OBJ_ID_HOST_MDB: return sizeof(struct switchdev_obj_port_mdb); default: BUG(); } return 0; } static int switchdev_port_obj_notify(enum switchdev_notifier_type nt, struct net_device *dev, const struct switchdev_obj *obj, struct netlink_ext_ack *extack) { int rc; int err; struct switchdev_notifier_port_obj_info obj_info = { .obj = obj, .handled = false, }; rc = call_switchdev_blocking_notifiers(nt, dev, &obj_info.info, extack); err = notifier_to_errno(rc); if (err) { WARN_ON(!obj_info.handled); return err; } if (!obj_info.handled) return -EOPNOTSUPP; return 0; } static void switchdev_obj_id_to_helpful_msg(struct net_device *dev, enum switchdev_obj_id obj_id, int err, bool add) { const char *action = add ? "add" : "del"; const char *reason = ""; const char *problem; const char *obj_str; switch (obj_id) { case SWITCHDEV_OBJ_ID_UNDEFINED: obj_str = "Undefined object"; problem = "Attempted operation is undefined, indicating a possible programming\n" "error.\n"; break; case SWITCHDEV_OBJ_ID_PORT_VLAN: obj_str = "VLAN entry"; problem = "Failure in VLAN settings on this port might disrupt network\n" "segmentation or traffic isolation, affecting network partitioning.\n"; break; case SWITCHDEV_OBJ_ID_PORT_MDB: obj_str = "Port Multicast Database entry"; problem = "Failure in updating the port's Multicast Database could lead to\n" "multicast forwarding issues.\n"; break; case SWITCHDEV_OBJ_ID_HOST_MDB: obj_str = "Host Multicast Database entry"; problem = "Failure in updating the host's Multicast Database may impact multicast\n" "group memberships or traffic delivery, affecting multicast\n" "communication.\n"; break; case SWITCHDEV_OBJ_ID_MRP: obj_str = "Media Redundancy Protocol configuration for port"; problem = "Failure to set MRP ring ID on this port prevents communication with\n" "the specified redundancy ring, resulting in an inability to engage\n" "in MRP-based network operations.\n"; break; case SWITCHDEV_OBJ_ID_RING_TEST_MRP: obj_str = "MRP Test Frame Operations for port"; problem = "Failure to generate/monitor MRP test frames may lead to inability to\n" "assess the ring's operational integrity and fault response, hindering\n" "proactive network management.\n"; break; case SWITCHDEV_OBJ_ID_RING_ROLE_MRP: obj_str = "MRP Ring Role Configuration"; problem = "Improper MRP ring role configuration may create conflicts in the ring,\n" "disrupting communication for all participants, or isolate the local\n" "system from the ring, hindering its ability to communicate with other\n" "participants.\n"; break; case SWITCHDEV_OBJ_ID_RING_STATE_MRP: obj_str = "MRP Ring State Configuration"; problem = "Failure to correctly set the MRP ring state can result in network\n" "loops or leave segments without communication. In a Closed state,\n" "it maintains loop prevention by blocking one MRM port, while an Open\n" "state activates in response to failures, changing port states to\n" "preserve network connectivity.\n"; break; case SWITCHDEV_OBJ_ID_IN_TEST_MRP: obj_str = "MRP_InTest Frame Generation Configuration"; problem = "Failure in managing MRP_InTest frame generation can misjudge the\n" "interconnection ring's state, leading to incorrect blocking or\n" "unblocking of the I/C port. This misconfiguration might result\n" "in unintended network loops or isolate critical network segments,\n" "compromising network integrity and reliability.\n"; break; case SWITCHDEV_OBJ_ID_IN_ROLE_MRP: obj_str = "Interconnection Ring Role Configuration"; problem = "Failure in incorrect assignment of interconnection ring roles\n" "(MIM/MIC) can impair the formation of the interconnection rings.\n"; break; case SWITCHDEV_OBJ_ID_IN_STATE_MRP: obj_str = "Interconnection Ring State Configuration"; problem = "Failure in updating the interconnection ring state can lead in\n" "case of Open state to incorrect blocking or unblocking of the\n" "I/C port, resulting in unintended network loops or isolation\n" "of critical network\n"; break; default: obj_str = "Unknown object"; problem = "Indicating a possible programming error.\n"; } switch (err) { case -ENOSPC: reason = "Current HW/SW setup lacks sufficient resources.\n"; break; } netdev_err(dev, "Failed to %s %s (object id=%d) with error: %pe (%d).\n%s%s\n", action, obj_str, obj_id, ERR_PTR(err), err, problem, reason); } static void switchdev_port_obj_add_deferred(struct net_device *dev, const void *data) { const struct switchdev_obj *obj = data; int err; ASSERT_RTNL(); err = switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD, dev, obj, NULL); if (err && err != -EOPNOTSUPP) switchdev_obj_id_to_helpful_msg(dev, obj->id, err, true); if (obj->complete) obj->complete(dev, err, obj->complete_priv); } static int switchdev_port_obj_add_defer(struct net_device *dev, const struct switchdev_obj *obj) { return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), switchdev_port_obj_add_deferred); } /** * switchdev_port_obj_add - Add port object * * @dev: port device * @obj: object to add * @extack: netlink extended ack * * rtnl_lock must be held and must not be in atomic section, * in case SWITCHDEV_F_DEFER flag is not set. */ int switchdev_port_obj_add(struct net_device *dev, const struct switchdev_obj *obj, struct netlink_ext_ack *extack) { if (obj->flags & SWITCHDEV_F_DEFER) return switchdev_port_obj_add_defer(dev, obj); ASSERT_RTNL(); return switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_ADD, dev, obj, extack); } EXPORT_SYMBOL_GPL(switchdev_port_obj_add); static int switchdev_port_obj_del_now(struct net_device *dev, const struct switchdev_obj *obj) { return switchdev_port_obj_notify(SWITCHDEV_PORT_OBJ_DEL, dev, obj, NULL); } static void switchdev_port_obj_del_deferred(struct net_device *dev, const void *data) { const struct switchdev_obj *obj = data; int err; err = switchdev_port_obj_del_now(dev, obj); if (err && err != -EOPNOTSUPP) switchdev_obj_id_to_helpful_msg(dev, obj->id, err, false); if (obj->complete) obj->complete(dev, err, obj->complete_priv); } static int switchdev_port_obj_del_defer(struct net_device *dev, const struct switchdev_obj *obj) { return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj), switchdev_port_obj_del_deferred); } /** * switchdev_port_obj_del - Delete port object * * @dev: port device * @obj: object to delete * * rtnl_lock must be held and must not be in atomic section, * in case SWITCHDEV_F_DEFER flag is not set. */ int switchdev_port_obj_del(struct net_device *dev, const struct switchdev_obj *obj) { if (obj->flags & SWITCHDEV_F_DEFER) return switchdev_port_obj_del_defer(dev, obj); ASSERT_RTNL(); return switchdev_port_obj_del_now(dev, obj); } EXPORT_SYMBOL_GPL(switchdev_port_obj_del); /** * switchdev_port_obj_act_is_deferred - Is object action pending? * * @dev: port device * @nt: type of action; add or delete * @obj: object to test * * Returns true if a deferred item is pending, which is * equivalent to the action @nt on an object @obj. * * rtnl_lock must be held. */ bool switchdev_port_obj_act_is_deferred(struct net_device *dev, enum switchdev_notifier_type nt, const struct switchdev_obj *obj) { struct switchdev_deferred_item *dfitem; bool found = false; ASSERT_RTNL(); spin_lock_bh(&deferred_lock); list_for_each_entry(dfitem, &deferred, list) { if (dfitem->dev != dev) continue; if ((dfitem->func == switchdev_port_obj_add_deferred && nt == SWITCHDEV_PORT_OBJ_ADD) || (dfitem->func == switchdev_port_obj_del_deferred && nt == SWITCHDEV_PORT_OBJ_DEL)) { if (switchdev_obj_eq((const void *)dfitem->data, obj)) { found = true; break; } } } spin_unlock_bh(&deferred_lock); return found; } EXPORT_SYMBOL_GPL(switchdev_port_obj_act_is_deferred); static ATOMIC_NOTIFIER_HEAD(switchdev_notif_chain); static RAW_NOTIFIER_HEAD(switchdev_blocking_notif_chain); /** * register_switchdev_notifier - Register notifier * @nb: notifier_block * * Register switch device notifier. */ int register_switchdev_notifier(struct notifier_block *nb) { return atomic_notifier_chain_register(&switchdev_notif_chain, nb); } EXPORT_SYMBOL_GPL(register_switchdev_notifier); /** * unregister_switchdev_notifier - Unregister notifier * @nb: notifier_block * * Unregister switch device notifier. */ int unregister_switchdev_notifier(struct notifier_block *nb) { return atomic_notifier_chain_unregister(&switchdev_notif_chain, nb); } EXPORT_SYMBOL_GPL(unregister_switchdev_notifier); /** * call_switchdev_notifiers - Call notifiers * @val: value passed unmodified to notifier function * @dev: port device * @info: notifier information data * @extack: netlink extended ack * Call all network notifier blocks. */ int call_switchdev_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack) { info->dev = dev; info->extack = extack; return atomic_notifier_call_chain(&switchdev_notif_chain, val, info); } EXPORT_SYMBOL_GPL(call_switchdev_notifiers); int register_switchdev_blocking_notifier(struct notifier_block *nb) { struct raw_notifier_head *chain = &switchdev_blocking_notif_chain; int err; rtnl_lock(); err = raw_notifier_chain_register(chain, nb); rtnl_unlock(); return err; } EXPORT_SYMBOL_GPL(register_switchdev_blocking_notifier); int unregister_switchdev_blocking_notifier(struct notifier_block *nb) { struct raw_notifier_head *chain = &switchdev_blocking_notif_chain; int err; rtnl_lock(); err = raw_notifier_chain_unregister(chain, nb); rtnl_unlock(); return err; } EXPORT_SYMBOL_GPL(unregister_switchdev_blocking_notifier); int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev, struct switchdev_notifier_info *info, struct netlink_ext_ack *extack) { ASSERT_RTNL(); info->dev = dev; info->extack = extack; return raw_notifier_call_chain(&switchdev_blocking_notif_chain, val, info); } EXPORT_SYMBOL_GPL(call_switchdev_blocking_notifiers); struct switchdev_nested_priv { bool (*check_cb)(const struct net_device *dev); bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev); const struct net_device *dev; struct net_device *lower_dev; }; static int switchdev_lower_dev_walk(struct net_device *lower_dev, struct netdev_nested_priv *priv) { struct switchdev_nested_priv *switchdev_priv = priv->data; bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev); bool (*check_cb)(const struct net_device *dev); const struct net_device *dev; check_cb = switchdev_priv->check_cb; foreign_dev_check_cb = switchdev_priv->foreign_dev_check_cb; dev = switchdev_priv->dev; if (check_cb(lower_dev) && !foreign_dev_check_cb(lower_dev, dev)) { switchdev_priv->lower_dev = lower_dev; return 1; } return 0; } static struct net_device * switchdev_lower_dev_find_rcu(struct net_device *dev, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev)) { struct switchdev_nested_priv switchdev_priv = { .check_cb = check_cb, .foreign_dev_check_cb = foreign_dev_check_cb, .dev = dev, .lower_dev = NULL, }; struct netdev_nested_priv priv = { .data = &switchdev_priv, }; netdev_walk_all_lower_dev_rcu(dev, switchdev_lower_dev_walk, &priv); return switchdev_priv.lower_dev; } static struct net_device * switchdev_lower_dev_find(struct net_device *dev, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev)) { struct switchdev_nested_priv switchdev_priv = { .check_cb = check_cb, .foreign_dev_check_cb = foreign_dev_check_cb, .dev = dev, .lower_dev = NULL, }; struct netdev_nested_priv priv = { .data = &switchdev_priv, }; netdev_walk_all_lower_dev(dev, switchdev_lower_dev_walk, &priv); return switchdev_priv.lower_dev; } static int __switchdev_handle_fdb_event_to_device(struct net_device *dev, struct net_device *orig_dev, unsigned long event, const struct switchdev_notifier_fdb_info *fdb_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev, unsigned long event, const void *ctx, const struct switchdev_notifier_fdb_info *fdb_info)) { const struct switchdev_notifier_info *info = &fdb_info->info; struct net_device *br, *lower_dev, *switchdev; struct list_head *iter; int err = -EOPNOTSUPP; if (check_cb(dev)) return mod_cb(dev, orig_dev, event, info->ctx, fdb_info); /* Recurse through lower interfaces in case the FDB entry is pointing * towards a bridge or a LAG device. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { /* Do not propagate FDB entries across bridges */ if (netif_is_bridge_master(lower_dev)) continue; /* Bridge ports might be either us, or LAG interfaces * that we offload. */ if (!check_cb(lower_dev) && !switchdev_lower_dev_find_rcu(lower_dev, check_cb, foreign_dev_check_cb)) continue; err = __switchdev_handle_fdb_event_to_device(lower_dev, orig_dev, event, fdb_info, check_cb, foreign_dev_check_cb, mod_cb); if (err && err != -EOPNOTSUPP) return err; } /* Event is neither on a bridge nor a LAG. Check whether it is on an * interface that is in a bridge with us. */ br = netdev_master_upper_dev_get_rcu(dev); if (!br || !netif_is_bridge_master(br)) return 0; switchdev = switchdev_lower_dev_find_rcu(br, check_cb, foreign_dev_check_cb); if (!switchdev) return 0; if (!foreign_dev_check_cb(switchdev, dev)) return err; return __switchdev_handle_fdb_event_to_device(br, orig_dev, event, fdb_info, check_cb, foreign_dev_check_cb, mod_cb); } int switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event, const struct switchdev_notifier_fdb_info *fdb_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev, unsigned long event, const void *ctx, const struct switchdev_notifier_fdb_info *fdb_info)) { int err; err = __switchdev_handle_fdb_event_to_device(dev, dev, event, fdb_info, check_cb, foreign_dev_check_cb, mod_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_fdb_event_to_device); static int __switchdev_handle_port_obj_add(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)) { struct switchdev_notifier_info *info = &port_obj_info->info; struct net_device *br, *lower_dev, *switchdev; struct netlink_ext_ack *extack; struct list_head *iter; int err = -EOPNOTSUPP; extack = switchdev_notifier_info_to_extack(info); if (check_cb(dev)) { err = add_cb(dev, info->ctx, port_obj_info->obj, extack); if (err != -EOPNOTSUPP) port_obj_info->handled = true; return err; } /* Switch ports might be stacked under e.g. a LAG. Ignore the * unsupported devices, another driver might be able to handle them. But * propagate to the callers any hard errors. * * If the driver does its own bookkeeping of stacked ports, it's not * necessary to go through this helper. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { if (netif_is_bridge_master(lower_dev)) continue; /* When searching for switchdev interfaces that are neighbors * of foreign ones, and @dev is a bridge, do not recurse on the * foreign interface again, it was already visited. */ if (foreign_dev_check_cb && !check_cb(lower_dev) && !switchdev_lower_dev_find(lower_dev, check_cb, foreign_dev_check_cb)) continue; err = __switchdev_handle_port_obj_add(lower_dev, port_obj_info, check_cb, foreign_dev_check_cb, add_cb); if (err && err != -EOPNOTSUPP) return err; } /* Event is neither on a bridge nor a LAG. Check whether it is on an * interface that is in a bridge with us. */ if (!foreign_dev_check_cb || port_obj_info->obj->flags & SWITCHDEV_F_NO_FOREIGN) return err; br = netdev_master_upper_dev_get(dev); if (!br || !netif_is_bridge_master(br)) return err; switchdev = switchdev_lower_dev_find(br, check_cb, foreign_dev_check_cb); if (!switchdev) return err; if (!foreign_dev_check_cb(switchdev, dev)) return err; return __switchdev_handle_port_obj_add(br, port_obj_info, check_cb, foreign_dev_check_cb, add_cb); } /* Pass through a port object addition, if @dev passes @check_cb, or replicate * it towards all lower interfaces of @dev that pass @check_cb, if @dev is a * bridge or a LAG. */ int switchdev_handle_port_obj_add(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)) { int err; err = __switchdev_handle_port_obj_add(dev, port_obj_info, check_cb, NULL, add_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_add); /* Same as switchdev_handle_port_obj_add(), except if object is notified on a * @dev that passes @foreign_dev_check_cb, it is replicated towards all devices * that pass @check_cb and are in the same bridge as @dev. */ int switchdev_handle_port_obj_add_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*add_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj, struct netlink_ext_ack *extack)) { int err; err = __switchdev_handle_port_obj_add(dev, port_obj_info, check_cb, foreign_dev_check_cb, add_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_add_foreign); static int __switchdev_handle_port_obj_del(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)) { struct switchdev_notifier_info *info = &port_obj_info->info; struct net_device *br, *lower_dev, *switchdev; struct list_head *iter; int err = -EOPNOTSUPP; if (check_cb(dev)) { err = del_cb(dev, info->ctx, port_obj_info->obj); if (err != -EOPNOTSUPP) port_obj_info->handled = true; return err; } /* Switch ports might be stacked under e.g. a LAG. Ignore the * unsupported devices, another driver might be able to handle them. But * propagate to the callers any hard errors. * * If the driver does its own bookkeeping of stacked ports, it's not * necessary to go through this helper. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { if (netif_is_bridge_master(lower_dev)) continue; /* When searching for switchdev interfaces that are neighbors * of foreign ones, and @dev is a bridge, do not recurse on the * foreign interface again, it was already visited. */ if (foreign_dev_check_cb && !check_cb(lower_dev) && !switchdev_lower_dev_find(lower_dev, check_cb, foreign_dev_check_cb)) continue; err = __switchdev_handle_port_obj_del(lower_dev, port_obj_info, check_cb, foreign_dev_check_cb, del_cb); if (err && err != -EOPNOTSUPP) return err; } /* Event is neither on a bridge nor a LAG. Check whether it is on an * interface that is in a bridge with us. */ if (!foreign_dev_check_cb) return err; br = netdev_master_upper_dev_get(dev); if (!br || !netif_is_bridge_master(br)) return err; switchdev = switchdev_lower_dev_find(br, check_cb, foreign_dev_check_cb); if (!switchdev) return err; if (!foreign_dev_check_cb(switchdev, dev)) return err; return __switchdev_handle_port_obj_del(br, port_obj_info, check_cb, foreign_dev_check_cb, del_cb); } /* Pass through a port object deletion, if @dev passes @check_cb, or replicate * it towards all lower interfaces of @dev that pass @check_cb, if @dev is a * bridge or a LAG. */ int switchdev_handle_port_obj_del(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)) { int err; err = __switchdev_handle_port_obj_del(dev, port_obj_info, check_cb, NULL, del_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_del); /* Same as switchdev_handle_port_obj_del(), except if object is notified on a * @dev that passes @foreign_dev_check_cb, it is replicated towards all devices * that pass @check_cb and are in the same bridge as @dev. */ int switchdev_handle_port_obj_del_foreign(struct net_device *dev, struct switchdev_notifier_port_obj_info *port_obj_info, bool (*check_cb)(const struct net_device *dev), bool (*foreign_dev_check_cb)(const struct net_device *dev, const struct net_device *foreign_dev), int (*del_cb)(struct net_device *dev, const void *ctx, const struct switchdev_obj *obj)) { int err; err = __switchdev_handle_port_obj_del(dev, port_obj_info, check_cb, foreign_dev_check_cb, del_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_del_foreign); static int __switchdev_handle_port_attr_set(struct net_device *dev, struct switchdev_notifier_port_attr_info *port_attr_info, bool (*check_cb)(const struct net_device *dev), int (*set_cb)(struct net_device *dev, const void *ctx, const struct switchdev_attr *attr, struct netlink_ext_ack *extack)) { struct switchdev_notifier_info *info = &port_attr_info->info; struct netlink_ext_ack *extack; struct net_device *lower_dev; struct list_head *iter; int err = -EOPNOTSUPP; extack = switchdev_notifier_info_to_extack(info); if (check_cb(dev)) { err = set_cb(dev, info->ctx, port_attr_info->attr, extack); if (err != -EOPNOTSUPP) port_attr_info->handled = true; return err; } /* Switch ports might be stacked under e.g. a LAG. Ignore the * unsupported devices, another driver might be able to handle them. But * propagate to the callers any hard errors. * * If the driver does its own bookkeeping of stacked ports, it's not * necessary to go through this helper. */ netdev_for_each_lower_dev(dev, lower_dev, iter) { if (netif_is_bridge_master(lower_dev)) continue; err = __switchdev_handle_port_attr_set(lower_dev, port_attr_info, check_cb, set_cb); if (err && err != -EOPNOTSUPP) return err; } return err; } int switchdev_handle_port_attr_set(struct net_device *dev, struct switchdev_notifier_port_attr_info *port_attr_info, bool (*check_cb)(const struct net_device *dev), int (*set_cb)(struct net_device *dev, const void *ctx, const struct switchdev_attr *attr, struct netlink_ext_ack *extack)) { int err; err = __switchdev_handle_port_attr_set(dev, port_attr_info, check_cb, set_cb); if (err == -EOPNOTSUPP) err = 0; return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_attr_set); int switchdev_bridge_port_offload(struct net_device *brport_dev, struct net_device *dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, bool tx_fwd_offload, struct netlink_ext_ack *extack) { struct switchdev_notifier_brport_info brport_info = { .brport = { .dev = dev, .ctx = ctx, .atomic_nb = atomic_nb, .blocking_nb = blocking_nb, .tx_fwd_offload = tx_fwd_offload, }, }; int err; ASSERT_RTNL(); err = call_switchdev_blocking_notifiers(SWITCHDEV_BRPORT_OFFLOADED, brport_dev, &brport_info.info, extack); return notifier_to_errno(err); } EXPORT_SYMBOL_GPL(switchdev_bridge_port_offload); void switchdev_bridge_port_unoffload(struct net_device *brport_dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb) { struct switchdev_notifier_brport_info brport_info = { .brport = { .ctx = ctx, .atomic_nb = atomic_nb, .blocking_nb = blocking_nb, }, }; ASSERT_RTNL(); call_switchdev_blocking_notifiers(SWITCHDEV_BRPORT_UNOFFLOADED, brport_dev, &brport_info.info, NULL); } EXPORT_SYMBOL_GPL(switchdev_bridge_port_unoffload); int switchdev_bridge_port_replay(struct net_device *brport_dev, struct net_device *dev, const void *ctx, struct notifier_block *atomic_nb, struct notifier_block *blocking_nb, struct netlink_ext_ack *extack) { struct switchdev_notifier_brport_info brport_info = { .brport = { .dev = dev, .ctx = ctx, .atomic_nb = atomic_nb, .blocking_nb = blocking_nb, }, }; int err; ASSERT_RTNL(); err = call_switchdev_blocking_notifiers(SWITCHDEV_BRPORT_REPLAY, brport_dev, &brport_info.info, extack); return notifier_to_errno(err); } EXPORT_SYMBOL_GPL(switchdev_bridge_port_replay); |
| 7 7 5 5 5 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 | /* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <linux/security.h> #include <linux/completion.h> #include <linux/list.h> #include <rdma/ib_verbs.h> #include <rdma/ib_cache.h> #include "core_priv.h" #include "mad_priv.h" static LIST_HEAD(mad_agent_list); /* Lock to protect mad_agent_list */ static DEFINE_SPINLOCK(mad_agent_list_lock); static struct pkey_index_qp_list *get_pkey_idx_qp_list(struct ib_port_pkey *pp) { struct pkey_index_qp_list *pkey = NULL; struct pkey_index_qp_list *tmp_pkey; struct ib_device *dev = pp->sec->dev; spin_lock(&dev->port_data[pp->port_num].pkey_list_lock); list_for_each_entry (tmp_pkey, &dev->port_data[pp->port_num].pkey_list, pkey_index_list) { if (tmp_pkey->pkey_index == pp->pkey_index) { pkey = tmp_pkey; break; } } spin_unlock(&dev->port_data[pp->port_num].pkey_list_lock); return pkey; } static int get_pkey_and_subnet_prefix(struct ib_port_pkey *pp, u16 *pkey, u64 *subnet_prefix) { struct ib_device *dev = pp->sec->dev; int ret; ret = ib_get_cached_pkey(dev, pp->port_num, pp->pkey_index, pkey); if (ret) return ret; ib_get_cached_subnet_prefix(dev, pp->port_num, subnet_prefix); return ret; } static int enforce_qp_pkey_security(u16 pkey, u64 subnet_prefix, struct ib_qp_security *qp_sec) { struct ib_qp_security *shared_qp_sec; int ret; ret = security_ib_pkey_access(qp_sec->security, subnet_prefix, pkey); if (ret) return ret; list_for_each_entry(shared_qp_sec, &qp_sec->shared_qp_list, shared_qp_list) { ret = security_ib_pkey_access(shared_qp_sec->security, subnet_prefix, pkey); if (ret) return ret; } return 0; } /* The caller of this function must hold the QP security * mutex of the QP of the security structure in *pps. * * It takes separate ports_pkeys and security structure * because in some cases the pps will be for a new settings * or the pps will be for the real QP and security structure * will be for a shared QP. */ static int check_qp_port_pkey_settings(struct ib_ports_pkeys *pps, struct ib_qp_security *sec) { u64 subnet_prefix; u16 pkey; int ret = 0; if (!pps) return 0; if (pps->main.state != IB_PORT_PKEY_NOT_VALID) { ret = get_pkey_and_subnet_prefix(&pps->main, &pkey, &subnet_prefix); if (ret) return ret; ret = enforce_qp_pkey_security(pkey, subnet_prefix, sec); if (ret) return ret; } if (pps->alt.state != IB_PORT_PKEY_NOT_VALID) { ret = get_pkey_and_subnet_prefix(&pps->alt, &pkey, &subnet_prefix); if (ret) return ret; ret = enforce_qp_pkey_security(pkey, subnet_prefix, sec); } return ret; } /* The caller of this function must hold the QP security * mutex. */ static void qp_to_error(struct ib_qp_security *sec) { struct ib_qp_security *shared_qp_sec; struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; struct ib_event event = { .event = IB_EVENT_QP_FATAL }; /* If the QP is in the process of being destroyed * the qp pointer in the security structure is * undefined. It cannot be modified now. */ if (sec->destroying) return; ib_modify_qp(sec->qp, &attr, IB_QP_STATE); if (sec->qp->event_handler && sec->qp->qp_context) { event.element.qp = sec->qp; sec->qp->event_handler(&event, sec->qp->qp_context); } list_for_each_entry(shared_qp_sec, &sec->shared_qp_list, shared_qp_list) { struct ib_qp *qp = shared_qp_sec->qp; if (qp->event_handler && qp->qp_context) { event.element.qp = qp; event.device = qp->device; qp->event_handler(&event, qp->qp_context); } } } static inline void check_pkey_qps(struct pkey_index_qp_list *pkey, struct ib_device *device, u32 port_num, u64 subnet_prefix) { struct ib_port_pkey *pp, *tmp_pp; bool comp; LIST_HEAD(to_error_list); u16 pkey_val; if (!ib_get_cached_pkey(device, port_num, pkey->pkey_index, &pkey_val)) { spin_lock(&pkey->qp_list_lock); list_for_each_entry(pp, &pkey->qp_list, qp_list) { if (atomic_read(&pp->sec->error_list_count)) continue; if (enforce_qp_pkey_security(pkey_val, subnet_prefix, pp->sec)) { atomic_inc(&pp->sec->error_list_count); list_add(&pp->to_error_list, &to_error_list); } } spin_unlock(&pkey->qp_list_lock); } list_for_each_entry_safe(pp, tmp_pp, &to_error_list, to_error_list) { mutex_lock(&pp->sec->mutex); qp_to_error(pp->sec); list_del(&pp->to_error_list); atomic_dec(&pp->sec->error_list_count); comp = pp->sec->destroying; mutex_unlock(&pp->sec->mutex); if (comp) complete(&pp->sec->error_complete); } } /* The caller of this function must hold the QP security * mutex. */ static int port_pkey_list_insert(struct ib_port_pkey *pp) { struct pkey_index_qp_list *tmp_pkey; struct pkey_index_qp_list *pkey; struct ib_device *dev; u32 port_num = pp->port_num; int ret = 0; if (pp->state != IB_PORT_PKEY_VALID) return 0; dev = pp->sec->dev; pkey = get_pkey_idx_qp_list(pp); if (!pkey) { bool found = false; pkey = kzalloc_obj(*pkey); if (!pkey) return -ENOMEM; spin_lock(&dev->port_data[port_num].pkey_list_lock); /* Check for the PKey again. A racing process may * have created it. */ list_for_each_entry(tmp_pkey, &dev->port_data[port_num].pkey_list, pkey_index_list) { if (tmp_pkey->pkey_index == pp->pkey_index) { kfree(pkey); pkey = tmp_pkey; found = true; break; } } if (!found) { pkey->pkey_index = pp->pkey_index; spin_lock_init(&pkey->qp_list_lock); INIT_LIST_HEAD(&pkey->qp_list); list_add(&pkey->pkey_index_list, &dev->port_data[port_num].pkey_list); } spin_unlock(&dev->port_data[port_num].pkey_list_lock); } spin_lock(&pkey->qp_list_lock); list_add(&pp->qp_list, &pkey->qp_list); spin_unlock(&pkey->qp_list_lock); pp->state = IB_PORT_PKEY_LISTED; return ret; } /* The caller of this function must hold the QP security * mutex. */ static void port_pkey_list_remove(struct ib_port_pkey *pp) { struct pkey_index_qp_list *pkey; if (pp->state != IB_PORT_PKEY_LISTED) return; pkey = get_pkey_idx_qp_list(pp); spin_lock(&pkey->qp_list_lock); list_del(&pp->qp_list); spin_unlock(&pkey->qp_list_lock); /* The setting may still be valid, i.e. after * a destroy has failed for example. */ pp->state = IB_PORT_PKEY_VALID; } static void destroy_qp_security(struct ib_qp_security *sec) { security_ib_free_security(sec->security); kfree(sec->ports_pkeys); kfree(sec); } /* The caller of this function must hold the QP security * mutex. */ static struct ib_ports_pkeys *get_new_pps(const struct ib_qp *qp, const struct ib_qp_attr *qp_attr, int qp_attr_mask) { struct ib_ports_pkeys *new_pps; struct ib_ports_pkeys *qp_pps = qp->qp_sec->ports_pkeys; new_pps = kzalloc_obj(*new_pps); if (!new_pps) return NULL; if (qp_attr_mask & IB_QP_PORT) new_pps->main.port_num = qp_attr->port_num; else if (qp_pps) new_pps->main.port_num = qp_pps->main.port_num; if (qp_attr_mask & IB_QP_PKEY_INDEX) new_pps->main.pkey_index = qp_attr->pkey_index; else if (qp_pps) new_pps->main.pkey_index = qp_pps->main.pkey_index; if (((qp_attr_mask & IB_QP_PKEY_INDEX) && (qp_attr_mask & IB_QP_PORT)) || (qp_pps && qp_pps->main.state != IB_PORT_PKEY_NOT_VALID)) new_pps->main.state = IB_PORT_PKEY_VALID; if (qp_attr_mask & IB_QP_ALT_PATH) { new_pps->alt.port_num = qp_attr->alt_port_num; new_pps->alt.pkey_index = qp_attr->alt_pkey_index; new_pps->alt.state = IB_PORT_PKEY_VALID; } else if (qp_pps) { new_pps->alt.port_num = qp_pps->alt.port_num; new_pps->alt.pkey_index = qp_pps->alt.pkey_index; if (qp_pps->alt.state != IB_PORT_PKEY_NOT_VALID) new_pps->alt.state = IB_PORT_PKEY_VALID; } new_pps->main.sec = qp->qp_sec; new_pps->alt.sec = qp->qp_sec; return new_pps; } int ib_open_shared_qp_security(struct ib_qp *qp, struct ib_device *dev) { struct ib_qp *real_qp = qp->real_qp; int ret; ret = ib_create_qp_security(qp, dev); if (ret) return ret; if (!qp->qp_sec) return 0; mutex_lock(&real_qp->qp_sec->mutex); ret = check_qp_port_pkey_settings(real_qp->qp_sec->ports_pkeys, qp->qp_sec); if (ret) goto ret; if (qp != real_qp) list_add(&qp->qp_sec->shared_qp_list, &real_qp->qp_sec->shared_qp_list); ret: mutex_unlock(&real_qp->qp_sec->mutex); if (ret) destroy_qp_security(qp->qp_sec); return ret; } void ib_close_shared_qp_security(struct ib_qp_security *sec) { struct ib_qp *real_qp = sec->qp->real_qp; mutex_lock(&real_qp->qp_sec->mutex); list_del(&sec->shared_qp_list); mutex_unlock(&real_qp->qp_sec->mutex); destroy_qp_security(sec); } int ib_create_qp_security(struct ib_qp *qp, struct ib_device *dev) { unsigned int i; bool is_ib = false; int ret; rdma_for_each_port (dev, i) { is_ib = rdma_protocol_ib(dev, i); if (is_ib) break; } /* If this isn't an IB device don't create the security context */ if (!is_ib) return 0; qp->qp_sec = kzalloc_obj(*qp->qp_sec); if (!qp->qp_sec) return -ENOMEM; qp->qp_sec->qp = qp; qp->qp_sec->dev = dev; mutex_init(&qp->qp_sec->mutex); INIT_LIST_HEAD(&qp->qp_sec->shared_qp_list); atomic_set(&qp->qp_sec->error_list_count, 0); init_completion(&qp->qp_sec->error_complete); ret = security_ib_alloc_security(&qp->qp_sec->security); if (ret) { kfree(qp->qp_sec); qp->qp_sec = NULL; } return ret; } EXPORT_SYMBOL(ib_create_qp_security); void ib_destroy_qp_security_begin(struct ib_qp_security *sec) { /* Return if not IB */ if (!sec) return; mutex_lock(&sec->mutex); /* Remove the QP from the lists so it won't get added to * a to_error_list during the destroy process. */ if (sec->ports_pkeys) { port_pkey_list_remove(&sec->ports_pkeys->main); port_pkey_list_remove(&sec->ports_pkeys->alt); } /* If the QP is already in one or more of those lists * the destroying flag will ensure the to error flow * doesn't operate on an undefined QP. */ sec->destroying = true; /* Record the error list count to know how many completions * to wait for. */ sec->error_comps_pending = atomic_read(&sec->error_list_count); mutex_unlock(&sec->mutex); } void ib_destroy_qp_security_abort(struct ib_qp_security *sec) { int ret; int i; /* Return if not IB */ if (!sec) return; /* If a concurrent cache update is in progress this * QP security could be marked for an error state * transition. Wait for this to complete. */ for (i = 0; i < sec->error_comps_pending; i++) wait_for_completion(&sec->error_complete); mutex_lock(&sec->mutex); sec->destroying = false; /* Restore the position in the lists and verify * access is still allowed in case a cache update * occurred while attempting to destroy. * * Because these setting were listed already * and removed during ib_destroy_qp_security_begin * we know the pkey_index_qp_list for the PKey * already exists so port_pkey_list_insert won't fail. */ if (sec->ports_pkeys) { port_pkey_list_insert(&sec->ports_pkeys->main); port_pkey_list_insert(&sec->ports_pkeys->alt); } ret = check_qp_port_pkey_settings(sec->ports_pkeys, sec); if (ret) qp_to_error(sec); mutex_unlock(&sec->mutex); } void ib_destroy_qp_security_end(struct ib_qp_security *sec) { int i; /* Return if not IB */ if (!sec) return; /* If a concurrent cache update is occurring we must * wait until this QP security structure is processed * in the QP to error flow before destroying it because * the to_error_list is in use. */ for (i = 0; i < sec->error_comps_pending; i++) wait_for_completion(&sec->error_complete); destroy_qp_security(sec); } void ib_security_cache_change(struct ib_device *device, u32 port_num, u64 subnet_prefix) { struct pkey_index_qp_list *pkey; list_for_each_entry (pkey, &device->port_data[port_num].pkey_list, pkey_index_list) { check_pkey_qps(pkey, device, port_num, subnet_prefix); } } void ib_security_release_port_pkey_list(struct ib_device *device) { struct pkey_index_qp_list *pkey, *tmp_pkey; unsigned int i; rdma_for_each_port (device, i) { list_for_each_entry_safe(pkey, tmp_pkey, &device->port_data[i].pkey_list, pkey_index_list) { list_del(&pkey->pkey_index_list); kfree(pkey); } } } int ib_security_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_udata *udata) { int ret = 0; struct ib_ports_pkeys *tmp_pps; struct ib_ports_pkeys *new_pps = NULL; struct ib_qp *real_qp = qp->real_qp; bool special_qp = (real_qp->qp_type == IB_QPT_SMI || real_qp->qp_type == IB_QPT_GSI || real_qp->qp_type >= IB_QPT_RESERVED1); bool pps_change = ((qp_attr_mask & (IB_QP_PKEY_INDEX | IB_QP_PORT)) || (qp_attr_mask & IB_QP_ALT_PATH)); WARN_ONCE((qp_attr_mask & IB_QP_PORT && rdma_protocol_ib(real_qp->device, qp_attr->port_num) && !real_qp->qp_sec), "%s: QP security is not initialized for IB QP: %u\n", __func__, real_qp->qp_num); /* The port/pkey settings are maintained only for the real QP. Open * handles on the real QP will be in the shared_qp_list. When * enforcing security on the real QP all the shared QPs will be * checked as well. */ if (pps_change && !special_qp && real_qp->qp_sec) { mutex_lock(&real_qp->qp_sec->mutex); new_pps = get_new_pps(real_qp, qp_attr, qp_attr_mask); if (!new_pps) { mutex_unlock(&real_qp->qp_sec->mutex); return -ENOMEM; } /* Add this QP to the lists for the new port * and pkey settings before checking for permission * in case there is a concurrent cache update * occurring. Walking the list for a cache change * doesn't acquire the security mutex unless it's * sending the QP to error. */ ret = port_pkey_list_insert(&new_pps->main); if (!ret) ret = port_pkey_list_insert(&new_pps->alt); if (!ret) ret = check_qp_port_pkey_settings(new_pps, real_qp->qp_sec); } if (!ret) ret = real_qp->device->ops.modify_qp(real_qp, qp_attr, qp_attr_mask, udata); if (new_pps) { /* Clean up the lists and free the appropriate * ports_pkeys structure. */ if (ret) { tmp_pps = new_pps; } else { tmp_pps = real_qp->qp_sec->ports_pkeys; real_qp->qp_sec->ports_pkeys = new_pps; } if (tmp_pps) { port_pkey_list_remove(&tmp_pps->main); port_pkey_list_remove(&tmp_pps->alt); } kfree(tmp_pps); mutex_unlock(&real_qp->qp_sec->mutex); } return ret; } static int ib_security_pkey_access(struct ib_device *dev, u32 port_num, u16 pkey_index, void *sec) { u64 subnet_prefix; u16 pkey; int ret; if (!rdma_protocol_ib(dev, port_num)) return 0; ret = ib_get_cached_pkey(dev, port_num, pkey_index, &pkey); if (ret) return ret; ib_get_cached_subnet_prefix(dev, port_num, &subnet_prefix); return security_ib_pkey_access(sec, subnet_prefix, pkey); } void ib_mad_agent_security_change(void) { struct ib_mad_agent *ag; spin_lock(&mad_agent_list_lock); list_for_each_entry(ag, &mad_agent_list, mad_agent_sec_list) WRITE_ONCE(ag->smp_allowed, !security_ib_endport_manage_subnet(ag->security, dev_name(&ag->device->dev), ag->port_num)); spin_unlock(&mad_agent_list_lock); } int ib_mad_agent_security_setup(struct ib_mad_agent *agent, enum ib_qp_type qp_type) { int ret; if (!rdma_protocol_ib(agent->device, agent->port_num)) return 0; INIT_LIST_HEAD(&agent->mad_agent_sec_list); ret = security_ib_alloc_security(&agent->security); if (ret) return ret; if (qp_type != IB_QPT_SMI) return 0; spin_lock(&mad_agent_list_lock); ret = security_ib_endport_manage_subnet(agent->security, dev_name(&agent->device->dev), agent->port_num); if (ret) goto free_security; WRITE_ONCE(agent->smp_allowed, true); list_add(&agent->mad_agent_sec_list, &mad_agent_list); spin_unlock(&mad_agent_list_lock); return 0; free_security: spin_unlock(&mad_agent_list_lock); security_ib_free_security(agent->security); return ret; } void ib_mad_agent_security_cleanup(struct ib_mad_agent *agent) { if (!rdma_protocol_ib(agent->device, agent->port_num)) return; if (agent->qp->qp_type == IB_QPT_SMI) { spin_lock(&mad_agent_list_lock); list_del(&agent->mad_agent_sec_list); spin_unlock(&mad_agent_list_lock); } security_ib_free_security(agent->security); } int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index) { if (!rdma_protocol_ib(map->agent.device, map->agent.port_num)) return 0; if (map->agent.qp->qp_type == IB_QPT_SMI) { if (!READ_ONCE(map->agent.smp_allowed)) return -EACCES; return 0; } return ib_security_pkey_access(map->agent.device, map->agent.port_num, pkey_index, map->agent.security); } |
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1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 | // SPDX-License-Identifier: GPL-2.0-only #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/workqueue.h> #include <linux/rtnetlink.h> #include <linux/cache.h> #include <linux/slab.h> #include <linux/list.h> #include <linux/delay.h> #include <linux/sched.h> #include <linux/idr.h> #include <linux/rculist.h> #include <linux/nsproxy.h> #include <linux/fs.h> #include <linux/proc_ns.h> #include <linux/file.h> #include <linux/export.h> #include <linux/user_namespace.h> #include <linux/net_namespace.h> #include <linux/sched/task.h> #include <linux/uidgid.h> #include <linux/proc_fs.h> #include <linux/nstree.h> #include <net/aligned_data.h> #include <net/sock.h> #include <net/netlink.h> #include <net/net_namespace.h> #include <net/netns/generic.h> /* * Our network namespace constructor/destructor lists */ static LIST_HEAD(pernet_list); static struct list_head *first_device = &pernet_list; LIST_HEAD(net_namespace_list); EXPORT_SYMBOL_GPL(net_namespace_list); /* Protects net_namespace_list. Nests iside rtnl_lock() */ DECLARE_RWSEM(net_rwsem); EXPORT_SYMBOL_GPL(net_rwsem); #ifdef CONFIG_KEYS static struct key_tag init_net_key_domain = { .usage = REFCOUNT_INIT(1) }; #endif struct net init_net; EXPORT_SYMBOL(init_net); static bool init_net_initialized; /* * pernet_ops_rwsem: protects: pernet_list, net_generic_ids, * init_net_initialized and first_device pointer. * This is internal net namespace object. Please, don't use it * outside. */ DECLARE_RWSEM(pernet_ops_rwsem); #define MIN_PERNET_OPS_ID \ ((sizeof(struct net_generic) + sizeof(void *) - 1) / sizeof(void *)) #define INITIAL_NET_GEN_PTRS 13 /* +1 for len +2 for rcu_head */ static unsigned int max_gen_ptrs = INITIAL_NET_GEN_PTRS; static struct net_generic *net_alloc_generic(void) { unsigned int gen_ptrs = READ_ONCE(max_gen_ptrs); unsigned int generic_size; struct net_generic *ng; generic_size = offsetof(struct net_generic, ptr[gen_ptrs]); ng = kzalloc(generic_size, GFP_KERNEL); if (ng) ng->s.len = gen_ptrs; return ng; } static int net_assign_generic(struct net *net, unsigned int id, void *data) { struct net_generic *ng, *old_ng; BUG_ON(id < MIN_PERNET_OPS_ID); old_ng = rcu_dereference_protected(net->gen, lockdep_is_held(&pernet_ops_rwsem)); if (old_ng->s.len > id) { old_ng->ptr[id] = data; return 0; } ng = net_alloc_generic(); if (!ng) return -ENOMEM; /* * Some synchronisation notes: * * The net_generic explores the net->gen array inside rcu * read section. Besides once set the net->gen->ptr[x] * pointer never changes (see rules in netns/generic.h). * * That said, we simply duplicate this array and schedule * the old copy for kfree after a grace period. */ memcpy(&ng->ptr[MIN_PERNET_OPS_ID], &old_ng->ptr[MIN_PERNET_OPS_ID], (old_ng->s.len - MIN_PERNET_OPS_ID) * sizeof(void *)); ng->ptr[id] = data; rcu_assign_pointer(net->gen, ng); kfree_rcu(old_ng, s.rcu); return 0; } static int ops_init(const struct pernet_operations *ops, struct net *net) { struct net_generic *ng; int err = -ENOMEM; void *data = NULL; if (ops->id) { data = kzalloc(ops->size, GFP_KERNEL); if (!data) goto out; err = net_assign_generic(net, *ops->id, data); if (err) goto cleanup; } err = 0; if (ops->init) err = ops->init(net); if (!err) return 0; if (ops->id) { ng = rcu_dereference_protected(net->gen, lockdep_is_held(&pernet_ops_rwsem)); ng->ptr[*ops->id] = NULL; } cleanup: kfree(data); out: return err; } static void ops_pre_exit_list(const struct pernet_operations *ops, struct list_head *net_exit_list) { struct net *net; if (ops->pre_exit) { list_for_each_entry(net, net_exit_list, exit_list) ops->pre_exit(net); } } static void ops_exit_rtnl_list(const struct list_head *ops_list, const struct pernet_operations *ops, struct list_head *net_exit_list) { const struct pernet_operations *saved_ops = ops; LIST_HEAD(dev_kill_list); struct net *net; rtnl_lock(); list_for_each_entry(net, net_exit_list, exit_list) { __rtnl_net_lock(net); ops = saved_ops; list_for_each_entry_continue_reverse(ops, ops_list, list) { if (ops->exit_rtnl) ops->exit_rtnl(net, &dev_kill_list); } __rtnl_net_unlock(net); } unregister_netdevice_many(&dev_kill_list); rtnl_unlock(); } static void ops_exit_list(const struct pernet_operations *ops, struct list_head *net_exit_list) { if (ops->exit) { struct net *net; list_for_each_entry(net, net_exit_list, exit_list) { ops->exit(net); cond_resched(); } } if (ops->exit_batch) ops->exit_batch(net_exit_list); } static void ops_free_list(const struct pernet_operations *ops, struct list_head *net_exit_list) { struct net *net; if (ops->id) { list_for_each_entry(net, net_exit_list, exit_list) kfree(net_generic(net, *ops->id)); } } static void ops_undo_list(const struct list_head *ops_list, const struct pernet_operations *ops, struct list_head *net_exit_list, bool expedite_rcu) { const struct pernet_operations *saved_ops; bool hold_rtnl = false; if (!ops) ops = list_entry(ops_list, typeof(*ops), list); saved_ops = ops; list_for_each_entry_continue_reverse(ops, ops_list, list) { hold_rtnl |= !!ops->exit_rtnl; ops_pre_exit_list(ops, net_exit_list); } /* Another CPU might be rcu-iterating the list, wait for it. * This needs to be before calling the exit() notifiers, so the * rcu_barrier() after ops_undo_list() isn't sufficient alone. * Also the pre_exit() and exit() methods need this barrier. */ if (expedite_rcu) synchronize_rcu_expedited(); else synchronize_rcu(); if (hold_rtnl) ops_exit_rtnl_list(ops_list, saved_ops, net_exit_list); ops = saved_ops; list_for_each_entry_continue_reverse(ops, ops_list, list) ops_exit_list(ops, net_exit_list); ops = saved_ops; list_for_each_entry_continue_reverse(ops, ops_list, list) ops_free_list(ops, net_exit_list); } static void ops_undo_single(struct pernet_operations *ops, struct list_head *net_exit_list) { LIST_HEAD(ops_list); list_add(&ops->list, &ops_list); ops_undo_list(&ops_list, NULL, net_exit_list, false); list_del(&ops->list); } /* should be called with nsid_lock held */ static int alloc_netid(struct net *net, struct net *peer, int reqid) { int min = 0, max = 0; if (reqid >= 0) { min = reqid; max = reqid + 1; } return idr_alloc(&net->netns_ids, peer, min, max, GFP_ATOMIC); } /* This function is used by idr_for_each(). If net is equal to peer, the * function returns the id so that idr_for_each() stops. Because we cannot * returns the id 0 (idr_for_each() will not stop), we return the magic value * NET_ID_ZERO (-1) for it. */ #define NET_ID_ZERO -1 static int net_eq_idr(int id, void *net, void *peer) { if (net_eq(net, peer)) return id ? : NET_ID_ZERO; return 0; } /* Must be called from RCU-critical section or with nsid_lock held */ static int __peernet2id(const struct net *net, struct net *peer) { int id = idr_for_each(&net->netns_ids, net_eq_idr, peer); /* Magic value for id 0. */ if (id == NET_ID_ZERO) return 0; if (id > 0) return id; return NETNSA_NSID_NOT_ASSIGNED; } static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid, struct nlmsghdr *nlh, gfp_t gfp); /* This function returns the id of a peer netns. If no id is assigned, one will * be allocated and returned. */ int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp) { int id; if (!check_net(net)) return NETNSA_NSID_NOT_ASSIGNED; spin_lock(&net->nsid_lock); id = __peernet2id(net, peer); if (id >= 0) { spin_unlock(&net->nsid_lock); return id; } /* When peer is obtained from RCU lists, we may race with * its cleanup. Check whether it's alive, and this guarantees * we never hash a peer back to net->netns_ids, after it has * just been idr_remove()'d from there in cleanup_net(). */ if (!maybe_get_net(peer)) { spin_unlock(&net->nsid_lock); return NETNSA_NSID_NOT_ASSIGNED; } id = alloc_netid(net, peer, -1); spin_unlock(&net->nsid_lock); put_net(peer); if (id < 0) return NETNSA_NSID_NOT_ASSIGNED; rtnl_net_notifyid(net, RTM_NEWNSID, id, 0, NULL, gfp); return id; } EXPORT_SYMBOL_GPL(peernet2id_alloc); /* This function returns, if assigned, the id of a peer netns. */ int peernet2id(const struct net *net, struct net *peer) { int id; rcu_read_lock(); id = __peernet2id(net, peer); rcu_read_unlock(); return id; } EXPORT_SYMBOL(peernet2id); /* This function returns true is the peer netns has an id assigned into the * current netns. */ bool peernet_has_id(const struct net *net, struct net *peer) { return peernet2id(net, peer) >= 0; } struct net *get_net_ns_by_id(const struct net *net, int id) { struct net *peer; if (id < 0) return NULL; rcu_read_lock(); peer = idr_find(&net->netns_ids, id); if (peer) peer = maybe_get_net(peer); rcu_read_unlock(); return peer; } EXPORT_SYMBOL_GPL(get_net_ns_by_id); static __net_init void preinit_net_sysctl(struct net *net) { net->core.sysctl_somaxconn = SOMAXCONN; /* Limits per socket sk_omem_alloc usage. * TCP zerocopy regular usage needs 128 KB. */ net->core.sysctl_optmem_max = 128 * 1024; net->core.sysctl_txrehash = SOCK_TXREHASH_ENABLED; net->core.sysctl_tstamp_allow_data = 1; net->core.sysctl_txq_reselection = msecs_to_jiffies(1000); } /* init code that must occur even if setup_net() is not called. */ static __net_init int preinit_net(struct net *net, struct user_namespace *user_ns) { int ret; ret = ns_common_init(net); if (ret) return ret; refcount_set(&net->passive, 1); ref_tracker_dir_init(&net->refcnt_tracker, 128, "net_refcnt"); ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net_notrefcnt"); net->hash_mix = get_random_u32(); net->dev_base_seq = 1; net->user_ns = user_ns; idr_init(&net->netns_ids); spin_lock_init(&net->nsid_lock); mutex_init(&net->ipv4.ra_mutex); #ifdef CONFIG_DEBUG_NET_SMALL_RTNL mutex_init(&net->rtnl_mutex); lock_set_cmp_fn(&net->rtnl_mutex, rtnl_net_lock_cmp_fn, NULL); #endif INIT_LIST_HEAD(&net->ptype_all); INIT_LIST_HEAD(&net->ptype_specific); preinit_net_sysctl(net); return 0; } /* * setup_net runs the initializers for the network namespace object. */ static __net_init int setup_net(struct net *net) { /* Must be called with pernet_ops_rwsem held */ const struct pernet_operations *ops; LIST_HEAD(net_exit_list); int error = 0; net->net_cookie = ns_tree_gen_id(net); list_for_each_entry(ops, &pernet_list, list) { error = ops_init(ops, net); if (error < 0) goto out_undo; } down_write(&net_rwsem); list_add_tail_rcu(&net->list, &net_namespace_list); up_write(&net_rwsem); ns_tree_add_raw(net); out: return error; out_undo: /* Walk through the list backwards calling the exit functions * for the pernet modules whose init functions did not fail. */ list_add(&net->exit_list, &net_exit_list); ops_undo_list(&pernet_list, ops, &net_exit_list, false); rcu_barrier(); goto out; } #ifdef CONFIG_NET_NS static struct ucounts *inc_net_namespaces(struct user_namespace *ns) { return inc_ucount(ns, current_euid(), UCOUNT_NET_NAMESPACES); } static void dec_net_namespaces(struct ucounts *ucounts) { dec_ucount(ucounts, UCOUNT_NET_NAMESPACES); } static struct kmem_cache *net_cachep __ro_after_init; static struct workqueue_struct *netns_wq; static struct net *net_alloc(void) { struct net *net = NULL; struct net_generic *ng; ng = net_alloc_generic(); if (!ng) goto out; net = kmem_cache_zalloc(net_cachep, GFP_KERNEL); if (!net) goto out_free; #ifdef CONFIG_KEYS net->key_domain = kzalloc_obj(struct key_tag); if (!net->key_domain) goto out_free_2; refcount_set(&net->key_domain->usage, 1); #endif rcu_assign_pointer(net->gen, ng); out: return net; #ifdef CONFIG_KEYS out_free_2: kmem_cache_free(net_cachep, net); net = NULL; #endif out_free: kfree(ng); goto out; } static LLIST_HEAD(defer_free_list); static void net_complete_free(void) { struct llist_node *kill_list; struct net *net, *next; /* Get the list of namespaces to free from last round. */ kill_list = llist_del_all(&defer_free_list); llist_for_each_entry_safe(net, next, kill_list, defer_free_list) kmem_cache_free(net_cachep, net); } void net_passive_dec(struct net *net) { if (refcount_dec_and_test(&net->passive)) { kfree(rcu_access_pointer(net->gen)); /* There should not be any trackers left there. */ ref_tracker_dir_exit(&net->notrefcnt_tracker); /* Wait for an extra rcu_barrier() before final free. */ llist_add(&net->defer_free_list, &defer_free_list); } } void net_drop_ns(struct ns_common *ns) { if (ns) net_passive_dec(to_net_ns(ns)); } struct net *copy_net_ns(u64 flags, struct user_namespace *user_ns, struct net *old_net) { struct ucounts *ucounts; struct net *net; int rv; if (!(flags & CLONE_NEWNET)) return get_net(old_net); ucounts = inc_net_namespaces(user_ns); if (!ucounts) return ERR_PTR(-ENOSPC); net = net_alloc(); if (!net) { rv = -ENOMEM; goto dec_ucounts; } rv = preinit_net(net, user_ns); if (rv < 0) goto dec_ucounts; net->ucounts = ucounts; get_user_ns(user_ns); rv = down_read_killable(&pernet_ops_rwsem); if (rv < 0) goto put_userns; rv = setup_net(net); up_read(&pernet_ops_rwsem); if (rv < 0) { put_userns: ns_common_free(net); #ifdef CONFIG_KEYS key_remove_domain(net->key_domain); #endif put_user_ns(user_ns); net_passive_dec(net); dec_ucounts: dec_net_namespaces(ucounts); return ERR_PTR(rv); } return net; } /** * net_ns_get_ownership - get sysfs ownership data for @net * @net: network namespace in question (can be NULL) * @uid: kernel user ID for sysfs objects * @gid: kernel group ID for sysfs objects * * Returns the uid/gid pair of root in the user namespace associated with the * given network namespace. */ void net_ns_get_ownership(const struct net *net, kuid_t *uid, kgid_t *gid) { if (net) { kuid_t ns_root_uid = make_kuid(net->user_ns, 0); kgid_t ns_root_gid = make_kgid(net->user_ns, 0); if (uid_valid(ns_root_uid)) *uid = ns_root_uid; if (gid_valid(ns_root_gid)) *gid = ns_root_gid; } else { *uid = GLOBAL_ROOT_UID; *gid = GLOBAL_ROOT_GID; } } EXPORT_SYMBOL_GPL(net_ns_get_ownership); static void unhash_nsid(struct net *last) { struct net *tmp, *peer; /* This function is only called from cleanup_net() work, * and this work is the only process, that may delete * a net from net_namespace_list. So, when the below * is executing, the list may only grow. Thus, we do not * use for_each_net_rcu() or net_rwsem. */ for_each_net(tmp) { int id = 0; spin_lock(&tmp->nsid_lock); while ((peer = idr_get_next(&tmp->netns_ids, &id))) { int curr_id = id; id++; if (!peer->is_dying) continue; idr_remove(&tmp->netns_ids, curr_id); spin_unlock(&tmp->nsid_lock); rtnl_net_notifyid(tmp, RTM_DELNSID, curr_id, 0, NULL, GFP_KERNEL); spin_lock(&tmp->nsid_lock); } spin_unlock(&tmp->nsid_lock); if (tmp == last) break; } } static LLIST_HEAD(cleanup_list); struct task_struct *cleanup_net_task; static void cleanup_net(struct work_struct *work) { struct llist_node *net_kill_list; struct net *net, *tmp, *last; LIST_HEAD(net_exit_list); WRITE_ONCE(cleanup_net_task, current); /* Atomically snapshot the list of namespaces to cleanup */ net_kill_list = llist_del_all(&cleanup_list); down_read(&pernet_ops_rwsem); /* Don't let anyone else find us. */ down_write(&net_rwsem); llist_for_each_entry(net, net_kill_list, cleanup_list) { ns_tree_remove(net); list_del_rcu(&net->list); net->is_dying = true; } /* Cache last net. After we unlock rtnl, no one new net * added to net_namespace_list can assign nsid pointer * to a net from net_kill_list (see peernet2id_alloc()). * So, we skip them in unhash_nsid(). * * Note, that unhash_nsid() does not delete nsid links * between net_kill_list's nets, as they've already * deleted from net_namespace_list. But, this would be * useless anyway, as netns_ids are destroyed there. */ last = list_last_entry(&net_namespace_list, struct net, list); up_write(&net_rwsem); unhash_nsid(last); llist_for_each_entry(net, net_kill_list, cleanup_list) { idr_destroy(&net->netns_ids); list_add_tail(&net->exit_list, &net_exit_list); } ops_undo_list(&pernet_list, NULL, &net_exit_list, true); up_read(&pernet_ops_rwsem); /* Ensure there are no outstanding rcu callbacks using this * network namespace. */ rcu_barrier(); net_complete_free(); /* Finally it is safe to free my network namespace structure */ list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) { list_del_init(&net->exit_list); ns_common_free(net); dec_net_namespaces(net->ucounts); #ifdef CONFIG_KEYS key_remove_domain(net->key_domain); #endif put_user_ns(net->user_ns); net_passive_dec(net); } WRITE_ONCE(cleanup_net_task, NULL); } /** * net_ns_barrier - wait until concurrent net_cleanup_work is done * * cleanup_net runs from work queue and will first remove namespaces * from the global list, then run net exit functions. * * Call this in module exit path to make sure that all netns * ->exit ops have been invoked before the function is removed. */ void net_ns_barrier(void) { down_write(&pernet_ops_rwsem); up_write(&pernet_ops_rwsem); } EXPORT_SYMBOL(net_ns_barrier); static DECLARE_WORK(net_cleanup_work, cleanup_net); void __put_net(struct net *net) { ref_tracker_dir_exit(&net->refcnt_tracker); /* Cleanup the network namespace in process context */ if (llist_add(&net->cleanup_list, &cleanup_list)) queue_work(netns_wq, &net_cleanup_work); } EXPORT_SYMBOL_GPL(__put_net); /** * get_net_ns - increment the refcount of the network namespace * @ns: common namespace (net) * * Returns the net's common namespace or ERR_PTR() if ref is zero. */ struct ns_common *get_net_ns(struct ns_common *ns) { struct net *net; net = maybe_get_net(container_of(ns, struct net, ns)); if (net) return &net->ns; return ERR_PTR(-EINVAL); } EXPORT_SYMBOL_GPL(get_net_ns); struct net *get_net_ns_by_fd(int fd) { CLASS(fd, f)(fd); if (fd_empty(f)) return ERR_PTR(-EBADF); if (proc_ns_file(fd_file(f))) { struct ns_common *ns = get_proc_ns(file_inode(fd_file(f))); if (ns->ops == &netns_operations) return get_net(container_of(ns, struct net, ns)); } return ERR_PTR(-EINVAL); } EXPORT_SYMBOL_GPL(get_net_ns_by_fd); #endif struct net *get_net_ns_by_pid(pid_t pid) { struct task_struct *tsk; struct net *net; /* Lookup the network namespace */ net = ERR_PTR(-ESRCH); rcu_read_lock(); tsk = find_task_by_vpid(pid); if (tsk) { struct nsproxy *nsproxy; task_lock(tsk); nsproxy = tsk->nsproxy; if (nsproxy) net = get_net(nsproxy->net_ns); task_unlock(tsk); } rcu_read_unlock(); return net; } EXPORT_SYMBOL_GPL(get_net_ns_by_pid); #ifdef CONFIG_NET_NS_REFCNT_TRACKER static void net_ns_net_debugfs(struct net *net) { ref_tracker_dir_symlink(&net->refcnt_tracker, "netns-%llx-%u-refcnt", net->net_cookie, net->ns.inum); ref_tracker_dir_symlink(&net->notrefcnt_tracker, "netns-%llx-%u-notrefcnt", net->net_cookie, net->ns.inum); } static int __init init_net_debugfs(void) { ref_tracker_dir_debugfs(&init_net.refcnt_tracker); ref_tracker_dir_debugfs(&init_net.notrefcnt_tracker); net_ns_net_debugfs(&init_net); return 0; } late_initcall(init_net_debugfs); #else static void net_ns_net_debugfs(struct net *net) { } #endif static __net_init int net_ns_net_init(struct net *net) { net_ns_net_debugfs(net); return 0; } static struct pernet_operations __net_initdata net_ns_ops = { .init = net_ns_net_init, }; static const struct nla_policy rtnl_net_policy[NETNSA_MAX + 1] = { [NETNSA_NONE] = { .type = NLA_UNSPEC }, [NETNSA_NSID] = { .type = NLA_S32 }, [NETNSA_PID] = { .type = NLA_U32 }, [NETNSA_FD] = { .type = NLA_U32 }, [NETNSA_TARGET_NSID] = { .type = NLA_S32 }, }; static int rtnl_net_newid(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct nlattr *tb[NETNSA_MAX + 1]; struct nlattr *nla; struct net *peer; int nsid, err; err = nlmsg_parse_deprecated(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, rtnl_net_policy, extack); if (err < 0) return err; if (!tb[NETNSA_NSID]) { NL_SET_ERR_MSG(extack, "nsid is missing"); return -EINVAL; } nsid = nla_get_s32(tb[NETNSA_NSID]); if (tb[NETNSA_PID]) { peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID])); nla = tb[NETNSA_PID]; } else if (tb[NETNSA_FD]) { peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD])); nla = tb[NETNSA_FD]; } else { NL_SET_ERR_MSG(extack, "Peer netns reference is missing"); return -EINVAL; } if (IS_ERR(peer)) { NL_SET_BAD_ATTR(extack, nla); NL_SET_ERR_MSG(extack, "Peer netns reference is invalid"); return PTR_ERR(peer); } spin_lock(&net->nsid_lock); if (__peernet2id(net, peer) >= 0) { spin_unlock(&net->nsid_lock); err = -EEXIST; NL_SET_BAD_ATTR(extack, nla); NL_SET_ERR_MSG(extack, "Peer netns already has a nsid assigned"); goto out; } err = alloc_netid(net, peer, nsid); spin_unlock(&net->nsid_lock); if (err >= 0) { rtnl_net_notifyid(net, RTM_NEWNSID, err, NETLINK_CB(skb).portid, nlh, GFP_KERNEL); err = 0; } else if (err == -ENOSPC && nsid >= 0) { err = -EEXIST; NL_SET_BAD_ATTR(extack, tb[NETNSA_NSID]); NL_SET_ERR_MSG(extack, "The specified nsid is already used"); } out: put_net(peer); return err; } static int rtnl_net_get_size(void) { return NLMSG_ALIGN(sizeof(struct rtgenmsg)) + nla_total_size(sizeof(s32)) /* NETNSA_NSID */ + nla_total_size(sizeof(s32)) /* NETNSA_CURRENT_NSID */ ; } struct net_fill_args { u32 portid; u32 seq; int flags; int cmd; int nsid; bool add_ref; int ref_nsid; }; static int rtnl_net_fill(struct sk_buff *skb, struct net_fill_args *args) { struct nlmsghdr *nlh; struct rtgenmsg *rth; nlh = nlmsg_put(skb, args->portid, args->seq, args->cmd, sizeof(*rth), args->flags); if (!nlh) return -EMSGSIZE; rth = nlmsg_data(nlh); rth->rtgen_family = AF_UNSPEC; if (nla_put_s32(skb, NETNSA_NSID, args->nsid)) goto nla_put_failure; if (args->add_ref && nla_put_s32(skb, NETNSA_CURRENT_NSID, args->ref_nsid)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static int rtnl_net_valid_getid_req(struct sk_buff *skb, const struct nlmsghdr *nlh, struct nlattr **tb, struct netlink_ext_ack *extack) { int i, err; if (!netlink_strict_get_check(skb)) return nlmsg_parse_deprecated(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, rtnl_net_policy, extack); err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, rtnl_net_policy, extack); if (err) return err; for (i = 0; i <= NETNSA_MAX; i++) { if (!tb[i]) continue; switch (i) { case NETNSA_PID: case NETNSA_FD: case NETNSA_NSID: case NETNSA_TARGET_NSID: break; default: NL_SET_ERR_MSG(extack, "Unsupported attribute in peer netns getid request"); return -EINVAL; } } return 0; } static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct nlattr *tb[NETNSA_MAX + 1]; struct net_fill_args fillargs = { .portid = NETLINK_CB(skb).portid, .seq = nlh->nlmsg_seq, .cmd = RTM_NEWNSID, }; struct net *peer, *target = net; struct nlattr *nla; struct sk_buff *msg; int err; err = rtnl_net_valid_getid_req(skb, nlh, tb, extack); if (err < 0) return err; if (tb[NETNSA_PID]) { peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID])); nla = tb[NETNSA_PID]; } else if (tb[NETNSA_FD]) { peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD])); nla = tb[NETNSA_FD]; } else if (tb[NETNSA_NSID]) { peer = get_net_ns_by_id(net, nla_get_s32(tb[NETNSA_NSID])); if (!peer) peer = ERR_PTR(-ENOENT); nla = tb[NETNSA_NSID]; } else { NL_SET_ERR_MSG(extack, "Peer netns reference is missing"); return -EINVAL; } if (IS_ERR(peer)) { NL_SET_BAD_ATTR(extack, nla); NL_SET_ERR_MSG(extack, "Peer netns reference is invalid"); return PTR_ERR(peer); } if (tb[NETNSA_TARGET_NSID]) { int id = nla_get_s32(tb[NETNSA_TARGET_NSID]); target = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, id); if (IS_ERR(target)) { NL_SET_BAD_ATTR(extack, tb[NETNSA_TARGET_NSID]); NL_SET_ERR_MSG(extack, "Target netns reference is invalid"); err = PTR_ERR(target); goto out; } fillargs.add_ref = true; fillargs.ref_nsid = peernet2id(net, peer); } msg = nlmsg_new(rtnl_net_get_size(), GFP_KERNEL); if (!msg) { err = -ENOMEM; goto out; } fillargs.nsid = peernet2id(target, peer); err = rtnl_net_fill(msg, &fillargs); if (err < 0) goto err_out; err = rtnl_unicast(msg, net, NETLINK_CB(skb).portid); goto out; err_out: nlmsg_free(msg); out: if (fillargs.add_ref) put_net(target); put_net(peer); return err; } struct rtnl_net_dump_cb { struct net *tgt_net; struct net *ref_net; struct sk_buff *skb; struct net_fill_args fillargs; int idx; int s_idx; }; /* Runs in RCU-critical section. */ static int rtnl_net_dumpid_one(int id, void *peer, void *data) { struct rtnl_net_dump_cb *net_cb = (struct rtnl_net_dump_cb *)data; int ret; if (net_cb->idx < net_cb->s_idx) goto cont; net_cb->fillargs.nsid = id; if (net_cb->fillargs.add_ref) net_cb->fillargs.ref_nsid = __peernet2id(net_cb->ref_net, peer); ret = rtnl_net_fill(net_cb->skb, &net_cb->fillargs); if (ret < 0) return ret; cont: net_cb->idx++; return 0; } static int rtnl_valid_dump_net_req(const struct nlmsghdr *nlh, struct sock *sk, struct rtnl_net_dump_cb *net_cb, struct netlink_callback *cb) { struct netlink_ext_ack *extack = cb->extack; struct nlattr *tb[NETNSA_MAX + 1]; int err, i; err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, rtnl_net_policy, extack); if (err < 0) return err; for (i = 0; i <= NETNSA_MAX; i++) { if (!tb[i]) continue; if (i == NETNSA_TARGET_NSID) { struct net *net; net = rtnl_get_net_ns_capable(sk, nla_get_s32(tb[i])); if (IS_ERR(net)) { NL_SET_BAD_ATTR(extack, tb[i]); NL_SET_ERR_MSG(extack, "Invalid target network namespace id"); return PTR_ERR(net); } net_cb->fillargs.add_ref = true; net_cb->ref_net = net_cb->tgt_net; net_cb->tgt_net = net; } else { NL_SET_BAD_ATTR(extack, tb[i]); NL_SET_ERR_MSG(extack, "Unsupported attribute in dump request"); return -EINVAL; } } return 0; } static int rtnl_net_dumpid(struct sk_buff *skb, struct netlink_callback *cb) { struct rtnl_net_dump_cb net_cb = { .tgt_net = sock_net(skb->sk), .skb = skb, .fillargs = { .portid = NETLINK_CB(cb->skb).portid, .seq = cb->nlh->nlmsg_seq, .flags = NLM_F_MULTI, .cmd = RTM_NEWNSID, }, .idx = 0, .s_idx = cb->args[0], }; int err = 0; if (cb->strict_check) { err = rtnl_valid_dump_net_req(cb->nlh, skb->sk, &net_cb, cb); if (err < 0) goto end; } rcu_read_lock(); idr_for_each(&net_cb.tgt_net->netns_ids, rtnl_net_dumpid_one, &net_cb); rcu_read_unlock(); cb->args[0] = net_cb.idx; end: if (net_cb.fillargs.add_ref) put_net(net_cb.tgt_net); return err; } static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid, struct nlmsghdr *nlh, gfp_t gfp) { struct net_fill_args fillargs = { .portid = portid, .seq = nlh ? nlh->nlmsg_seq : 0, .cmd = cmd, .nsid = id, }; struct sk_buff *msg; int err = -ENOMEM; msg = nlmsg_new(rtnl_net_get_size(), gfp); if (!msg) goto out; err = rtnl_net_fill(msg, &fillargs); if (err < 0) goto err_out; rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlh, gfp); return; err_out: nlmsg_free(msg); out: rtnl_set_sk_err(net, RTNLGRP_NSID, err); } #ifdef CONFIG_NET_NS static void __init netns_ipv4_struct_check(void) { /* TX readonly hotpath cache lines */ CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_early_retrans); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_tso_win_divisor); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_tso_rtt_log); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_autocorking); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_min_snd_mss); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_notsent_lowat); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_limit_output_bytes); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_min_rtt_wlen); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_tcp_wmem); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_tx, sysctl_ip_fwd_use_pmtu); /* RX readonly hotpath cache line */ CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_moderate_rcvbuf); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_rcvbuf_low_rtt); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_ip_early_demux); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_early_demux); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_l3mdev_accept); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_reordering); CACHELINE_ASSERT_GROUP_MEMBER(struct netns_ipv4, netns_ipv4_read_rx, sysctl_tcp_rmem); } #endif static const struct rtnl_msg_handler net_ns_rtnl_msg_handlers[] __initconst = { {.msgtype = RTM_NEWNSID, .doit = rtnl_net_newid, .flags = RTNL_FLAG_DOIT_UNLOCKED}, {.msgtype = RTM_GETNSID, .doit = rtnl_net_getid, .dumpit = rtnl_net_dumpid, .flags = RTNL_FLAG_DOIT_UNLOCKED | RTNL_FLAG_DUMP_UNLOCKED}, }; void __init net_ns_init(void) { struct net_generic *ng; #ifdef CONFIG_NET_NS netns_ipv4_struct_check(); net_cachep = kmem_cache_create("net_namespace", sizeof(struct net), SMP_CACHE_BYTES, SLAB_PANIC|SLAB_ACCOUNT, NULL); /* Create workqueue for cleanup */ netns_wq = create_singlethread_workqueue("netns"); if (!netns_wq) panic("Could not create netns workq"); #endif ng = net_alloc_generic(); if (!ng) panic("Could not allocate generic netns"); rcu_assign_pointer(init_net.gen, ng); #ifdef CONFIG_KEYS init_net.key_domain = &init_net_key_domain; #endif /* * This currently cannot fail as the initial network namespace * has a static inode number. */ if (preinit_net(&init_net, &init_user_ns)) panic("Could not preinitialize the initial network namespace"); down_write(&pernet_ops_rwsem); if (setup_net(&init_net)) panic("Could not setup the initial network namespace"); init_net_initialized = true; up_write(&pernet_ops_rwsem); if (register_pernet_subsys(&net_ns_ops)) panic("Could not register network namespace subsystems"); rtnl_register_many(net_ns_rtnl_msg_handlers); } #ifdef CONFIG_NET_NS static int __register_pernet_operations(struct list_head *list, struct pernet_operations *ops) { LIST_HEAD(net_exit_list); struct net *net; int error; list_add_tail(&ops->list, list); if (ops->init || ops->id) { /* We held write locked pernet_ops_rwsem, and parallel * setup_net() and cleanup_net() are not possible. */ for_each_net(net) { error = ops_init(ops, net); if (error) goto out_undo; list_add_tail(&net->exit_list, &net_exit_list); } } return 0; out_undo: /* If I have an error cleanup all namespaces I initialized */ list_del(&ops->list); ops_undo_single(ops, &net_exit_list); return error; } static void __unregister_pernet_operations(struct pernet_operations *ops) { LIST_HEAD(net_exit_list); struct net *net; /* See comment in __register_pernet_operations() */ for_each_net(net) list_add_tail(&net->exit_list, &net_exit_list); list_del(&ops->list); ops_undo_single(ops, &net_exit_list); } #else static int __register_pernet_operations(struct list_head *list, struct pernet_operations *ops) { if (!init_net_initialized) { list_add_tail(&ops->list, list); return 0; } return ops_init(ops, &init_net); } static void __unregister_pernet_operations(struct pernet_operations *ops) { if (!init_net_initialized) { list_del(&ops->list); } else { LIST_HEAD(net_exit_list); list_add(&init_net.exit_list, &net_exit_list); ops_undo_single(ops, &net_exit_list); } } #endif /* CONFIG_NET_NS */ static DEFINE_IDA(net_generic_ids); static int register_pernet_operations(struct list_head *list, struct pernet_operations *ops) { int error; if (WARN_ON(!!ops->id ^ !!ops->size)) return -EINVAL; if (ops->id) { error = ida_alloc_min(&net_generic_ids, MIN_PERNET_OPS_ID, GFP_KERNEL); if (error < 0) return error; *ops->id = error; /* This does not require READ_ONCE as writers already hold * pernet_ops_rwsem. But WRITE_ONCE is needed to protect * net_alloc_generic. */ WRITE_ONCE(max_gen_ptrs, max(max_gen_ptrs, *ops->id + 1)); } error = __register_pernet_operations(list, ops); if (error) { rcu_barrier(); if (ops->id) ida_free(&net_generic_ids, *ops->id); } return error; } static void unregister_pernet_operations(struct pernet_operations *ops) { __unregister_pernet_operations(ops); rcu_barrier(); if (ops->id) ida_free(&net_generic_ids, *ops->id); } /** * register_pernet_subsys - register a network namespace subsystem * @ops: pernet operations structure for the subsystem * * Register a subsystem which has init and exit functions * that are called when network namespaces are created and * destroyed respectively. * * When registered all network namespace init functions are * called for every existing network namespace. Allowing kernel * modules to have a race free view of the set of network namespaces. * * When a new network namespace is created all of the init * methods are called in the order in which they were registered. * * When a network namespace is destroyed all of the exit methods * are called in the reverse of the order with which they were * registered. */ int register_pernet_subsys(struct pernet_operations *ops) { int error; down_write(&pernet_ops_rwsem); error = register_pernet_operations(first_device, ops); up_write(&pernet_ops_rwsem); return error; } EXPORT_SYMBOL_GPL(register_pernet_subsys); /** * unregister_pernet_subsys - unregister a network namespace subsystem * @ops: pernet operations structure to manipulate * * Remove the pernet operations structure from the list to be * used when network namespaces are created or destroyed. In * addition run the exit method for all existing network * namespaces. */ void unregister_pernet_subsys(struct pernet_operations *ops) { down_write(&pernet_ops_rwsem); unregister_pernet_operations(ops); up_write(&pernet_ops_rwsem); } EXPORT_SYMBOL_GPL(unregister_pernet_subsys); /** * register_pernet_device - register a network namespace device * @ops: pernet operations structure for the subsystem * * Register a device which has init and exit functions * that are called when network namespaces are created and * destroyed respectively. * * When registered all network namespace init functions are * called for every existing network namespace. Allowing kernel * modules to have a race free view of the set of network namespaces. * * When a new network namespace is created all of the init * methods are called in the order in which they were registered. * * When a network namespace is destroyed all of the exit methods * are called in the reverse of the order with which they were * registered. */ int register_pernet_device(struct pernet_operations *ops) { int error; down_write(&pernet_ops_rwsem); error = register_pernet_operations(&pernet_list, ops); if (!error && (first_device == &pernet_list)) first_device = &ops->list; up_write(&pernet_ops_rwsem); return error; } EXPORT_SYMBOL_GPL(register_pernet_device); /** * unregister_pernet_device - unregister a network namespace netdevice * @ops: pernet operations structure to manipulate * * Remove the pernet operations structure from the list to be * used when network namespaces are created or destroyed. In * addition run the exit method for all existing network * namespaces. */ void unregister_pernet_device(struct pernet_operations *ops) { down_write(&pernet_ops_rwsem); if (&ops->list == first_device) first_device = first_device->next; unregister_pernet_operations(ops); up_write(&pernet_ops_rwsem); } EXPORT_SYMBOL_GPL(unregister_pernet_device); #ifdef CONFIG_NET_NS static struct ns_common *netns_get(struct task_struct *task) { struct net *net = NULL; struct nsproxy *nsproxy; task_lock(task); nsproxy = task->nsproxy; if (nsproxy) net = get_net(nsproxy->net_ns); task_unlock(task); return net ? &net->ns : NULL; } static void netns_put(struct ns_common *ns) { put_net(to_net_ns(ns)); } static int netns_install(struct nsset *nsset, struct ns_common *ns) { struct nsproxy *nsproxy = nsset->nsproxy; struct net *net = to_net_ns(ns); if (!ns_capable(net->user_ns, CAP_SYS_ADMIN) || !ns_capable(nsset->cred->user_ns, CAP_SYS_ADMIN)) return -EPERM; put_net(nsproxy->net_ns); nsproxy->net_ns = get_net(net); return 0; } static struct user_namespace *netns_owner(struct ns_common *ns) { return to_net_ns(ns)->user_ns; } const struct proc_ns_operations netns_operations = { .name = "net", .get = netns_get, .put = netns_put, .install = netns_install, .owner = netns_owner, }; #endif |
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1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * Copyright (C) 2020-2023 Intel Corporation */ #include <linux/kernel.h> #include <linux/device.h> #include <linux/hex.h> #include <linux/if.h> #include <linux/if_ether.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/rtnetlink.h> #include <linux/slab.h> #include <linux/notifier.h> #include <net/mac80211.h> #include <net/cfg80211.h> #include "ieee80211_i.h" #include "rate.h" #include "debugfs.h" #include "debugfs_netdev.h" #include "driver-ops.h" struct ieee80211_if_read_sdata_data { ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int); struct ieee80211_sub_if_data *sdata; }; static ssize_t ieee80211_if_read_sdata_handler(struct wiphy *wiphy, struct file *file, char *buf, size_t bufsize, void *data) { struct ieee80211_if_read_sdata_data *d = data; return d->format(d->sdata, buf, bufsize); } static ssize_t ieee80211_if_read_sdata( struct file *file, char __user *userbuf, size_t count, loff_t *ppos, ssize_t (*format)(const struct ieee80211_sub_if_data *sdata, char *, int)) { struct ieee80211_sub_if_data *sdata = file->private_data; struct ieee80211_if_read_sdata_data data = { .format = format, .sdata = sdata, }; char buf[200]; return wiphy_locked_debugfs_read(sdata->local->hw.wiphy, file, buf, sizeof(buf), userbuf, count, ppos, ieee80211_if_read_sdata_handler, &data); } struct ieee80211_if_write_sdata_data { ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int); struct ieee80211_sub_if_data *sdata; }; static ssize_t ieee80211_if_write_sdata_handler(struct wiphy *wiphy, struct file *file, char *buf, size_t count, void *data) { struct ieee80211_if_write_sdata_data *d = data; return d->write(d->sdata, buf, count); } static ssize_t ieee80211_if_write_sdata( struct file *file, const char __user *userbuf, size_t count, loff_t *ppos, ssize_t (*write)(struct ieee80211_sub_if_data *sdata, const char *, int)) { struct ieee80211_sub_if_data *sdata = file->private_data; struct ieee80211_if_write_sdata_data data = { .write = write, .sdata = sdata, }; char buf[64]; return wiphy_locked_debugfs_write(sdata->local->hw.wiphy, file, buf, sizeof(buf), userbuf, count, ieee80211_if_write_sdata_handler, &data); } struct ieee80211_if_read_link_data { ssize_t (*format)(const struct ieee80211_link_data *, char *, int); struct ieee80211_link_data *link; }; static ssize_t ieee80211_if_read_link_handler(struct wiphy *wiphy, struct file *file, char *buf, size_t bufsize, void *data) { struct ieee80211_if_read_link_data *d = data; return d->format(d->link, buf, bufsize); } static ssize_t ieee80211_if_read_link( struct file *file, char __user *userbuf, size_t count, loff_t *ppos, ssize_t (*format)(const struct ieee80211_link_data *link, char *, int)) { struct ieee80211_link_data *link = file->private_data; struct ieee80211_if_read_link_data data = { .format = format, .link = link, }; char buf[200]; return wiphy_locked_debugfs_read(link->sdata->local->hw.wiphy, file, buf, sizeof(buf), userbuf, count, ppos, ieee80211_if_read_link_handler, &data); } struct ieee80211_if_write_link_data { ssize_t (*write)(struct ieee80211_link_data *, const char *, int); struct ieee80211_link_data *link; }; static ssize_t ieee80211_if_write_link_handler(struct wiphy *wiphy, struct file *file, char *buf, size_t count, void *data) { struct ieee80211_if_write_sdata_data *d = data; return d->write(d->sdata, buf, count); } static ssize_t ieee80211_if_write_link( struct file *file, const char __user *userbuf, size_t count, loff_t *ppos, ssize_t (*write)(struct ieee80211_link_data *link, const char *, int)) { struct ieee80211_link_data *link = file->private_data; struct ieee80211_if_write_link_data data = { .write = write, .link = link, }; char buf[64]; return wiphy_locked_debugfs_write(link->sdata->local->hw.wiphy, file, buf, sizeof(buf), userbuf, count, ieee80211_if_write_link_handler, &data); } #define IEEE80211_IF_FMT(name, type, field, format_string) \ static ssize_t ieee80211_if_fmt_##name( \ const type *data, char *buf, \ int buflen) \ { \ return scnprintf(buf, buflen, format_string, data->field); \ } #define IEEE80211_IF_FMT_DEC(name, type, field) \ IEEE80211_IF_FMT(name, type, field, "%d\n") #define IEEE80211_IF_FMT_HEX(name, type, field) \ IEEE80211_IF_FMT(name, type, field, "%#x\n") #define IEEE80211_IF_FMT_LHEX(name, type, field) \ IEEE80211_IF_FMT(name, type, field, "%#lx\n") #define IEEE80211_IF_FMT_HEXARRAY(name, type, field) \ static ssize_t ieee80211_if_fmt_##name( \ const type *data, \ char *buf, int buflen) \ { \ char *p = buf; \ int i; \ for (i = 0; i < sizeof(data->field); i++) { \ p += scnprintf(p, buflen + buf - p, "%.2x ", \ data->field[i]); \ } \ p += scnprintf(p, buflen + buf - p, "\n"); \ return p - buf; \ } #define IEEE80211_IF_FMT_ATOMIC(name, type, field) \ static ssize_t ieee80211_if_fmt_##name( \ const type *data, \ char *buf, int buflen) \ { \ return scnprintf(buf, buflen, "%d\n", atomic_read(&data->field));\ } #define IEEE80211_IF_FMT_MAC(name, type, field) \ static ssize_t ieee80211_if_fmt_##name( \ const type *data, char *buf, \ int buflen) \ { \ return scnprintf(buf, buflen, "%pM\n", data->field); \ } #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, type, field) \ static ssize_t ieee80211_if_fmt_##name( \ const type *data, \ char *buf, int buflen) \ { \ return scnprintf(buf, buflen, "%d\n", \ jiffies_to_msecs(data->field)); \ } #define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ static const struct debugfs_short_fops name##_ops = { \ .read = (_read), \ .write = (_write), \ .llseek = generic_file_llseek, \ } #define _IEEE80211_IF_FILE_R_FN(name) \ static ssize_t ieee80211_if_read_##name(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_read_sdata(file, \ userbuf, count, ppos, \ ieee80211_if_fmt_##name); \ } #define _IEEE80211_IF_FILE_W_FN(name) \ static ssize_t ieee80211_if_write_##name(struct file *file, \ const char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_write_sdata(file, userbuf, \ count, ppos, \ ieee80211_if_parse_##name); \ } #define IEEE80211_IF_FILE_R(name) \ _IEEE80211_IF_FILE_R_FN(name) \ _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) #define IEEE80211_IF_FILE_W(name) \ _IEEE80211_IF_FILE_W_FN(name) \ _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) #define IEEE80211_IF_FILE_RW(name) \ _IEEE80211_IF_FILE_R_FN(name) \ _IEEE80211_IF_FILE_W_FN(name) \ _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ ieee80211_if_write_##name) #define IEEE80211_IF_FILE(name, field, format) \ IEEE80211_IF_FMT_##format(name, struct ieee80211_sub_if_data, field) \ IEEE80211_IF_FILE_R(name) #define _IEEE80211_IF_LINK_R_FN(name) \ static ssize_t ieee80211_if_read_##name(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_read_link(file, \ userbuf, count, ppos, \ ieee80211_if_fmt_##name); \ } #define _IEEE80211_IF_LINK_W_FN(name) \ static ssize_t ieee80211_if_write_##name(struct file *file, \ const char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_write_link(file, userbuf, \ count, ppos, \ ieee80211_if_parse_##name); \ } #define IEEE80211_IF_LINK_FILE_R(name) \ _IEEE80211_IF_LINK_R_FN(name) \ _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, NULL) #define IEEE80211_IF_LINK_FILE_W(name) \ _IEEE80211_IF_LINK_W_FN(name) \ _IEEE80211_IF_FILE_OPS(link_##name, NULL, ieee80211_if_write_##name) #define IEEE80211_IF_LINK_FILE_RW(name) \ _IEEE80211_IF_LINK_R_FN(name) \ _IEEE80211_IF_LINK_W_FN(name) \ _IEEE80211_IF_FILE_OPS(link_##name, ieee80211_if_read_##name, \ ieee80211_if_write_##name) #define IEEE80211_IF_LINK_FILE(name, field, format) \ IEEE80211_IF_FMT_##format(name, struct ieee80211_link_data, field) \ IEEE80211_IF_LINK_FILE_R(name) /* common attributes */ IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[NL80211_BAND_2GHZ], HEX); IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[NL80211_BAND_5GHZ], HEX); IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz, rc_rateidx_mcs_mask[NL80211_BAND_2GHZ], HEXARRAY); IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz, rc_rateidx_mcs_mask[NL80211_BAND_5GHZ], HEXARRAY); static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_2ghz( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { int i, len = 0; const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_2GHZ]; for (i = 0; i < NL80211_VHT_NSS_MAX; i++) len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); len += scnprintf(buf + len, buflen - len, "\n"); return len; } IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_2ghz); static ssize_t ieee80211_if_fmt_rc_rateidx_vht_mcs_mask_5ghz( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { int i, len = 0; const u16 *mask = sdata->rc_rateidx_vht_mcs_mask[NL80211_BAND_5GHZ]; for (i = 0; i < NL80211_VHT_NSS_MAX; i++) len += scnprintf(buf + len, buflen - len, "%04x ", mask[i]); len += scnprintf(buf + len, buflen - len, "\n"); return len; } IEEE80211_IF_FILE_R(rc_rateidx_vht_mcs_mask_5ghz); IEEE80211_IF_FILE(flags, flags, HEX); IEEE80211_IF_FILE(state, state, LHEX); IEEE80211_IF_LINK_FILE(txpower, conf->txpower, DEC); IEEE80211_IF_LINK_FILE(ap_power_level, ap_power_level, DEC); IEEE80211_IF_LINK_FILE(user_power_level, user_power_level, DEC); static ssize_t ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { int len; len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d\n", sdata->vif.hw_queue[IEEE80211_AC_VO], sdata->vif.hw_queue[IEEE80211_AC_VI], sdata->vif.hw_queue[IEEE80211_AC_BE], sdata->vif.hw_queue[IEEE80211_AC_BK]); if (sdata->vif.type == NL80211_IFTYPE_AP) len += scnprintf(buf + len, buflen - len, "cab queue: %d\n", sdata->vif.cab_queue); return len; } IEEE80211_IF_FILE_R(hw_queues); /* STA attributes */ IEEE80211_IF_FILE(bssid, deflink.u.mgd.bssid, MAC); IEEE80211_IF_FILE(aid, vif.cfg.aid, DEC); IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS); static int ieee80211_set_smps(struct ieee80211_link_data *link, enum ieee80211_smps_mode smps_mode) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; /* The driver indicated that EML is enabled for the interface, thus do * not allow to override the SMPS state. */ if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE) return -EOPNOTSUPP; if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && smps_mode == IEEE80211_SMPS_STATIC) return -EINVAL; /* auto should be dynamic if in PS mode */ if (!(local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) && (smps_mode == IEEE80211_SMPS_DYNAMIC || smps_mode == IEEE80211_SMPS_AUTOMATIC)) return -EINVAL; if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; return __ieee80211_request_smps_mgd(link->sdata, link, smps_mode); } static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { [IEEE80211_SMPS_AUTOMATIC] = "auto", [IEEE80211_SMPS_OFF] = "off", [IEEE80211_SMPS_STATIC] = "static", [IEEE80211_SMPS_DYNAMIC] = "dynamic", }; static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_link_data *link, char *buf, int buflen) { if (link->sdata->vif.type == NL80211_IFTYPE_STATION) return snprintf(buf, buflen, "request: %s\nused: %s\n", smps_modes[link->u.mgd.req_smps], smps_modes[link->smps_mode]); return -EINVAL; } static ssize_t ieee80211_if_parse_smps(struct ieee80211_link_data *link, const char *buf, int buflen) { enum ieee80211_smps_mode mode; for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { if (strncmp(buf, smps_modes[mode], buflen) == 0) { int err = ieee80211_set_smps(link, mode); if (!err) return buflen; return err; } } return -EINVAL; } IEEE80211_IF_LINK_FILE_RW(smps); static ssize_t ieee80211_if_parse_tkip_mic_test( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { struct ieee80211_local *local = sdata->local; u8 addr[ETH_ALEN]; struct sk_buff *skb; struct ieee80211_hdr *hdr; __le16 fc; if (!mac_pton(buf, addr)) return -EINVAL; if (!ieee80211_sdata_running(sdata)) return -ENOTCONN; skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100); if (!skb) return -ENOMEM; skb_reserve(skb, local->hw.extra_tx_headroom); hdr = skb_put_zero(skb, 24); fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); switch (sdata->vif.type) { case NL80211_IFTYPE_AP: fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); /* DA BSSID SA */ memcpy(hdr->addr1, addr, ETH_ALEN); memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN); break; case NL80211_IFTYPE_STATION: fc |= cpu_to_le16(IEEE80211_FCTL_TODS); /* BSSID SA DA */ if (!sdata->u.mgd.associated) { dev_kfree_skb(skb); return -ENOTCONN; } memcpy(hdr->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); memcpy(hdr->addr3, addr, ETH_ALEN); break; default: dev_kfree_skb(skb); return -EOPNOTSUPP; } hdr->frame_control = fc; /* * Add some length to the test frame to make it look bit more valid. * The exact contents does not matter since the recipient is required * to drop this because of the Michael MIC failure. */ skb_put_zero(skb, 50); IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE; ieee80211_tx_skb(sdata, skb); return buflen; } IEEE80211_IF_FILE_W(tkip_mic_test); static ssize_t ieee80211_if_parse_beacon_loss( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { if (!ieee80211_sdata_running(sdata) || !sdata->vif.cfg.assoc) return -ENOTCONN; ieee80211_beacon_loss(&sdata->vif); return buflen; } IEEE80211_IF_FILE_W(beacon_loss); static ssize_t ieee80211_if_fmt_uapsd_queues( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_queues); } static ssize_t ieee80211_if_parse_uapsd_queues( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 val; int ret; ret = kstrtou8(buf, 0, &val); if (ret) return ret; if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) return -ERANGE; ifmgd->uapsd_queues = val; return buflen; } IEEE80211_IF_FILE_RW(uapsd_queues); static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; return snprintf(buf, buflen, "0x%x\n", ifmgd->uapsd_max_sp_len); } static ssize_t ieee80211_if_parse_uapsd_max_sp_len( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; unsigned long val; int ret; ret = kstrtoul(buf, 0, &val); if (ret) return -EINVAL; if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) return -ERANGE; ifmgd->uapsd_max_sp_len = val; return buflen; } IEEE80211_IF_FILE_RW(uapsd_max_sp_len); static ssize_t ieee80211_if_fmt_tdls_wider_bw( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; bool tdls_wider_bw; tdls_wider_bw = ieee80211_hw_check(&sdata->local->hw, TDLS_WIDER_BW) && !ifmgd->tdls_wider_bw_prohibited; return snprintf(buf, buflen, "%d\n", tdls_wider_bw); } static ssize_t ieee80211_if_parse_tdls_wider_bw( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 val; int ret; ret = kstrtou8(buf, 0, &val); if (ret) return ret; ifmgd->tdls_wider_bw_prohibited = !val; return buflen; } IEEE80211_IF_FILE_RW(tdls_wider_bw); /* AP attributes */ IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC); IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC); IEEE80211_IF_FILE(num_mcast_sta_vlan, u.vlan.num_mcast_sta, ATOMIC); static ssize_t ieee80211_if_fmt_num_buffered_multicast( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { return scnprintf(buf, buflen, "%u\n", skb_queue_len(&sdata->u.ap.ps.bc_buf)); } IEEE80211_IF_FILE_R(num_buffered_multicast); static ssize_t ieee80211_if_fmt_aqm( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { struct ieee80211_local *local = sdata->local; struct txq_info *txqi; int len; if (!sdata->vif.txq) return 0; txqi = to_txq_info(sdata->vif.txq); spin_lock_bh(&local->fq.lock); len = scnprintf(buf, buflen, "ac backlog-bytes backlog-packets new-flows drops marks overlimit collisions tx-bytes tx-packets\n" "%u %u %u %u %u %u %u %u %u %u\n", txqi->txq.ac, txqi->tin.backlog_bytes, txqi->tin.backlog_packets, txqi->tin.flows, txqi->cstats.drop_count, txqi->cstats.ecn_mark, txqi->tin.overlimit, txqi->tin.collisions, txqi->tin.tx_bytes, txqi->tin.tx_packets); spin_unlock_bh(&local->fq.lock); return len; } IEEE80211_IF_FILE_R(aqm); IEEE80211_IF_FILE(multicast_to_unicast, u.ap.multicast_to_unicast, HEX); /* IBSS attributes */ static ssize_t ieee80211_if_fmt_tsf( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { struct ieee80211_local *local = sdata->local; u64 tsf; tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata); return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf); } static ssize_t ieee80211_if_parse_tsf( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { struct ieee80211_local *local = sdata->local; unsigned long long tsf; int ret; int tsf_is_delta = 0; if (strncmp(buf, "reset", 5) == 0) { if (local->ops->reset_tsf) { drv_reset_tsf(local, sdata); wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); } } else { if (buflen > 10 && buf[1] == '=') { if (buf[0] == '+') tsf_is_delta = 1; else if (buf[0] == '-') tsf_is_delta = -1; else return -EINVAL; buf += 2; } ret = kstrtoull(buf, 10, &tsf); if (ret < 0) return ret; if (tsf_is_delta && local->ops->offset_tsf) { drv_offset_tsf(local, sdata, tsf_is_delta * tsf); wiphy_info(local->hw.wiphy, "debugfs offset TSF by %018lld\n", tsf_is_delta * tsf); } else if (local->ops->set_tsf) { if (tsf_is_delta) tsf = drv_get_tsf(local, sdata) + tsf_is_delta * tsf; drv_set_tsf(local, sdata, tsf); wiphy_info(local->hw.wiphy, "debugfs set TSF to %#018llx\n", tsf); } } ieee80211_recalc_dtim(sdata, drv_get_tsf(local, sdata)); return buflen; } IEEE80211_IF_FILE_RW(tsf); static ssize_t ieee80211_if_fmt_valid_links(const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { return snprintf(buf, buflen, "0x%x\n", sdata->vif.valid_links); } IEEE80211_IF_FILE_R(valid_links); static ssize_t ieee80211_if_fmt_active_links(const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { return snprintf(buf, buflen, "0x%x\n", sdata->vif.active_links); } static ssize_t ieee80211_if_parse_active_links(struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) { u16 active_links; if (kstrtou16(buf, 0, &active_links) || !active_links) return -EINVAL; return ieee80211_set_active_links(&sdata->vif, active_links) ?: buflen; } IEEE80211_IF_FILE_RW(active_links); IEEE80211_IF_LINK_FILE(addr, conf->addr, MAC); #ifdef CONFIG_MAC80211_MESH IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC); /* Mesh stats attributes */ IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); IEEE80211_IF_FILE(dropped_frames_no_route, u.mesh.mshstats.dropped_frames_no_route, DEC); /* Mesh parameters */ IEEE80211_IF_FILE(dot11MeshMaxRetries, u.mesh.mshcfg.dot11MeshMaxRetries, DEC); IEEE80211_IF_FILE(dot11MeshRetryTimeout, u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); IEEE80211_IF_FILE(dot11MeshConfirmTimeout, u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); IEEE80211_IF_FILE(dot11MeshHoldingTimeout, u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC); IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval, u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC); IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); IEEE80211_IF_FILE(path_refresh_time, u.mesh.mshcfg.path_refresh_time, DEC); IEEE80211_IF_FILE(min_discovery_timeout, u.mesh.mshcfg.min_discovery_timeout, DEC); IEEE80211_IF_FILE(dot11MeshHWMPRootMode, u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol, u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC); IEEE80211_IF_FILE(dot11MeshHWMPRannInterval, u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC); IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC); IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC); IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC); IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout, u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC); IEEE80211_IF_FILE(dot11MeshHWMProotInterval, u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC); IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval, u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC); IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC); IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration, u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC); IEEE80211_IF_FILE(dot11MeshConnectedToMeshGate, u.mesh.mshcfg.dot11MeshConnectedToMeshGate, DEC); IEEE80211_IF_FILE(dot11MeshNolearn, u.mesh.mshcfg.dot11MeshNolearn, DEC); IEEE80211_IF_FILE(dot11MeshConnectedToAuthServer, u.mesh.mshcfg.dot11MeshConnectedToAuthServer, DEC); #endif #define DEBUGFS_ADD_MODE(name, mode) \ debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \ sdata, &name##_ops) #define DEBUGFS_ADD_X(_bits, _name, _mode) \ debugfs_create_x##_bits(#_name, _mode, sdata->vif.debugfs_dir, \ &sdata->vif._name) #define DEBUGFS_ADD_X8(_name, _mode) \ DEBUGFS_ADD_X(8, _name, _mode) #define DEBUGFS_ADD_X16(_name, _mode) \ DEBUGFS_ADD_X(16, _name, _mode) #define DEBUGFS_ADD_X32(_name, _mode) \ DEBUGFS_ADD_X(32, _name, _mode) #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400) static void add_common_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(rc_rateidx_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mask_5ghz); DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz); DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz); DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_2ghz); DEBUGFS_ADD(rc_rateidx_vht_mcs_mask_5ghz); DEBUGFS_ADD(hw_queues); if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && sdata->vif.type != NL80211_IFTYPE_NAN) DEBUGFS_ADD(aqm); } static void add_sta_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(bssid); DEBUGFS_ADD(aid); DEBUGFS_ADD(beacon_timeout); DEBUGFS_ADD_MODE(tkip_mic_test, 0200); DEBUGFS_ADD_MODE(beacon_loss, 0200); DEBUGFS_ADD_MODE(uapsd_queues, 0600); DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600); DEBUGFS_ADD_MODE(tdls_wider_bw, 0600); DEBUGFS_ADD_MODE(valid_links, 0400); DEBUGFS_ADD_MODE(active_links, 0600); DEBUGFS_ADD_X16(dormant_links, 0400); } static void add_ap_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(num_mcast_sta); DEBUGFS_ADD(num_sta_ps); DEBUGFS_ADD(dtim_count); DEBUGFS_ADD(num_buffered_multicast); DEBUGFS_ADD_MODE(tkip_mic_test, 0200); DEBUGFS_ADD_MODE(multicast_to_unicast, 0600); } static void add_vlan_files(struct ieee80211_sub_if_data *sdata) { /* add num_mcast_sta_vlan using name num_mcast_sta */ debugfs_create_file("num_mcast_sta", 0400, sdata->vif.debugfs_dir, sdata, &num_mcast_sta_vlan_ops); } static void add_ibss_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD_MODE(tsf, 0600); } #ifdef CONFIG_MAC80211_MESH static void add_mesh_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD_MODE(tsf, 0600); DEBUGFS_ADD_MODE(estab_plinks, 0400); } static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) { struct dentry *dir = debugfs_create_dir("mesh_stats", sdata->vif.debugfs_dir); #define MESHSTATS_ADD(name)\ debugfs_create_file(#name, 0400, dir, sdata, &name##_ops) MESHSTATS_ADD(fwded_mcast); MESHSTATS_ADD(fwded_unicast); MESHSTATS_ADD(fwded_frames); MESHSTATS_ADD(dropped_frames_ttl); MESHSTATS_ADD(dropped_frames_no_route); #undef MESHSTATS_ADD } static void add_mesh_config(struct ieee80211_sub_if_data *sdata) { struct dentry *dir = debugfs_create_dir("mesh_config", sdata->vif.debugfs_dir); #define MESHPARAMS_ADD(name) \ debugfs_create_file(#name, 0600, dir, sdata, &name##_ops) MESHPARAMS_ADD(dot11MeshMaxRetries); MESHPARAMS_ADD(dot11MeshRetryTimeout); MESHPARAMS_ADD(dot11MeshConfirmTimeout); MESHPARAMS_ADD(dot11MeshHoldingTimeout); MESHPARAMS_ADD(dot11MeshTTL); MESHPARAMS_ADD(element_ttl); MESHPARAMS_ADD(auto_open_plinks); MESHPARAMS_ADD(dot11MeshMaxPeerLinks); MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval); MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); MESHPARAMS_ADD(path_refresh_time); MESHPARAMS_ADD(min_discovery_timeout); MESHPARAMS_ADD(dot11MeshHWMPRootMode); MESHPARAMS_ADD(dot11MeshHWMPRannInterval); MESHPARAMS_ADD(dot11MeshForwarding); MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol); MESHPARAMS_ADD(rssi_threshold); MESHPARAMS_ADD(ht_opmode); MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout); MESHPARAMS_ADD(dot11MeshHWMProotInterval); MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval); MESHPARAMS_ADD(power_mode); MESHPARAMS_ADD(dot11MeshAwakeWindowDuration); MESHPARAMS_ADD(dot11MeshConnectedToMeshGate); MESHPARAMS_ADD(dot11MeshNolearn); MESHPARAMS_ADD(dot11MeshConnectedToAuthServer); #undef MESHPARAMS_ADD } #endif static void add_files(struct ieee80211_sub_if_data *sdata) { if (!sdata->vif.debugfs_dir) return; DEBUGFS_ADD(flags); DEBUGFS_ADD(state); if (sdata->vif.type != NL80211_IFTYPE_MONITOR) add_common_files(sdata); switch (sdata->vif.type) { case NL80211_IFTYPE_MESH_POINT: #ifdef CONFIG_MAC80211_MESH add_mesh_files(sdata); add_mesh_stats(sdata); add_mesh_config(sdata); #endif break; case NL80211_IFTYPE_STATION: add_sta_files(sdata); break; case NL80211_IFTYPE_ADHOC: add_ibss_files(sdata); break; case NL80211_IFTYPE_AP: add_ap_files(sdata); break; case NL80211_IFTYPE_AP_VLAN: add_vlan_files(sdata); break; default: break; } } #undef DEBUGFS_ADD_MODE #undef DEBUGFS_ADD #define DEBUGFS_ADD_MODE(dentry, name, mode) \ debugfs_create_file(#name, mode, dentry, \ link, &link_##name##_ops) #define DEBUGFS_ADD(dentry, name) DEBUGFS_ADD_MODE(dentry, name, 0400) static void add_link_files(struct ieee80211_link_data *link, struct dentry *dentry) { DEBUGFS_ADD(dentry, txpower); DEBUGFS_ADD(dentry, user_power_level); DEBUGFS_ADD(dentry, ap_power_level); switch (link->sdata->vif.type) { case NL80211_IFTYPE_STATION: DEBUGFS_ADD_MODE(dentry, smps, 0600); break; default: break; } } static void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata, bool mld_vif) { char buf[10+IFNAMSIZ]; sprintf(buf, "netdev:%s", sdata->name); sdata->vif.debugfs_dir = debugfs_create_dir(buf, sdata->local->hw.wiphy->debugfsdir); /* deflink also has this */ sdata->deflink.debugfs_dir = sdata->vif.debugfs_dir; sdata->debugfs.subdir_stations = debugfs_create_dir("stations", sdata->vif.debugfs_dir); add_files(sdata); if (!mld_vif) add_link_files(&sdata->deflink, sdata->vif.debugfs_dir); } void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) { if (!sdata->vif.debugfs_dir) return; debugfs_remove_recursive(sdata->vif.debugfs_dir); sdata->vif.debugfs_dir = NULL; sdata->debugfs.subdir_stations = NULL; } void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) { debugfs_change_name(sdata->vif.debugfs_dir, "netdev:%s", sdata->name); } void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, bool mld_vif) { ieee80211_debugfs_remove_netdev(sdata); ieee80211_debugfs_add_netdev(sdata, mld_vif); if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) { drv_vif_add_debugfs(sdata->local, sdata); if (!mld_vif) ieee80211_link_debugfs_drv_add(&sdata->deflink); } } void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) { char link_dir_name[10]; if (WARN_ON(!link->sdata->vif.debugfs_dir || link->debugfs_dir)) return; /* For now, this should not be called for non-MLO capable drivers */ if (WARN_ON(!(link->sdata->local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))) return; snprintf(link_dir_name, sizeof(link_dir_name), "link-%d", link->link_id); link->debugfs_dir = debugfs_create_dir(link_dir_name, link->sdata->vif.debugfs_dir); DEBUGFS_ADD(link->debugfs_dir, addr); add_link_files(link, link->debugfs_dir); } void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link) { if (!link->sdata->vif.debugfs_dir || !link->debugfs_dir) { link->debugfs_dir = NULL; return; } if (link->debugfs_dir == link->sdata->vif.debugfs_dir) { WARN_ON(link != &link->sdata->deflink); link->debugfs_dir = NULL; return; } debugfs_remove_recursive(link->debugfs_dir); link->debugfs_dir = NULL; } void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link) { if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR || WARN_ON(!link->debugfs_dir)) return; drv_link_add_debugfs(link->sdata->local, link->sdata, link->conf, link->debugfs_dir); } void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link) { if (!link || !link->debugfs_dir) return; if (WARN_ON(link->debugfs_dir == link->sdata->vif.debugfs_dir)) return; /* Recreate the directory excluding the driver data */ debugfs_remove_recursive(link->debugfs_dir); link->debugfs_dir = NULL; ieee80211_link_debugfs_add(link); } |
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2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 | // SPDX-License-Identifier: GPL-2.0-only /* * KVM Microsoft Hyper-V emulation * * derived from arch/x86/kvm/x86.c * * Copyright (C) 2006 Qumranet, Inc. * Copyright (C) 2008 Qumranet, Inc. * Copyright IBM Corporation, 2008 * Copyright 2010 Red Hat, Inc. and/or its affiliates. * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com> * * Authors: * Avi Kivity <avi@qumranet.com> * Yaniv Kamay <yaniv@qumranet.com> * Amit Shah <amit.shah@qumranet.com> * Ben-Ami Yassour <benami@il.ibm.com> * Andrey Smetanin <asmetanin@virtuozzo.com> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "x86.h" #include "lapic.h" #include "ioapic.h" #include "cpuid.h" #include "hyperv.h" #include "mmu.h" #include "xen.h" #include <linux/cpu.h> #include <linux/kvm_host.h> #include <linux/highmem.h> #include <linux/sched/cputime.h> #include <linux/spinlock.h> #include <linux/eventfd.h> #include <asm/apicdef.h> #include <asm/mshyperv.h> #include <trace/events/kvm.h> #include "trace.h" #include "irq.h" #include "fpu.h" #define KVM_HV_MAX_SPARSE_VCPU_SET_BITS DIV_ROUND_UP(KVM_MAX_VCPUS, HV_VCPUS_PER_SPARSE_BANK) /* * As per Hyper-V TLFS, extended hypercalls start from 0x8001 * (HvExtCallQueryCapabilities). Response of this hypercalls is a 64 bit value * where each bit tells which extended hypercall is available besides * HvExtCallQueryCapabilities. * * 0x8001 - First extended hypercall, HvExtCallQueryCapabilities, no bit * assigned. * * 0x8002 - Bit 0 * 0x8003 - Bit 1 * .. * 0x8041 - Bit 63 * * Therefore, HV_EXT_CALL_MAX = 0x8001 + 64 */ #define HV_EXT_CALL_MAX (HV_EXT_CALL_QUERY_CAPABILITIES + 64) static void stimer_mark_pending(struct kvm_vcpu_hv_stimer *stimer, bool vcpu_kick); static inline u64 synic_read_sint(struct kvm_vcpu_hv_synic *synic, int sint) { return atomic64_read(&synic->sint[sint]); } static inline int synic_get_sint_vector(u64 sint_value) { if (sint_value & HV_SYNIC_SINT_MASKED) return -1; return sint_value & HV_SYNIC_SINT_VECTOR_MASK; } static bool synic_has_vector_connected(struct kvm_vcpu_hv_synic *synic, int vector) { int i; for (i = 0; i < ARRAY_SIZE(synic->sint); i++) { if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector) return true; } return false; } static bool synic_has_vector_auto_eoi(struct kvm_vcpu_hv_synic *synic, int vector) { int i; u64 sint_value; for (i = 0; i < ARRAY_SIZE(synic->sint); i++) { sint_value = synic_read_sint(synic, i); if (synic_get_sint_vector(sint_value) == vector && sint_value & HV_SYNIC_SINT_AUTO_EOI) return true; } return false; } static void synic_update_vector(struct kvm_vcpu_hv_synic *synic, int vector) { struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic); struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); bool auto_eoi_old, auto_eoi_new; if (vector < HV_SYNIC_FIRST_VALID_VECTOR) return; if (synic_has_vector_connected(synic, vector)) __set_bit(vector, synic->vec_bitmap); else __clear_bit(vector, synic->vec_bitmap); auto_eoi_old = !bitmap_empty(synic->auto_eoi_bitmap, 256); if (synic_has_vector_auto_eoi(synic, vector)) __set_bit(vector, synic->auto_eoi_bitmap); else __clear_bit(vector, synic->auto_eoi_bitmap); auto_eoi_new = !bitmap_empty(synic->auto_eoi_bitmap, 256); if (auto_eoi_old == auto_eoi_new) return; if (!enable_apicv) return; down_write(&vcpu->kvm->arch.apicv_update_lock); if (auto_eoi_new) hv->synic_auto_eoi_used++; else hv->synic_auto_eoi_used--; /* * Inhibit APICv if any vCPU is using SynIC's AutoEOI, which relies on * the hypervisor to manually inject IRQs. */ __kvm_set_or_clear_apicv_inhibit(vcpu->kvm, APICV_INHIBIT_REASON_HYPERV, !!hv->synic_auto_eoi_used); up_write(&vcpu->kvm->arch.apicv_update_lock); } static int synic_set_sint(struct kvm_vcpu_hv_synic *synic, int sint, u64 data, bool host) { int vector, old_vector; bool masked; vector = data & HV_SYNIC_SINT_VECTOR_MASK; masked = data & HV_SYNIC_SINT_MASKED; /* * Valid vectors are 16-255, however, nested Hyper-V attempts to write * default '0x10000' value on boot and this should not #GP. We need to * allow zero-initing the register from host as well. */ if (vector < HV_SYNIC_FIRST_VALID_VECTOR && !host && !masked) return 1; /* * Guest may configure multiple SINTs to use the same vector, so * we maintain a bitmap of vectors handled by synic, and a * bitmap of vectors with auto-eoi behavior. The bitmaps are * updated here, and atomically queried on fast paths. */ old_vector = synic_read_sint(synic, sint) & HV_SYNIC_SINT_VECTOR_MASK; atomic64_set(&synic->sint[sint], data); synic_update_vector(synic, old_vector); synic_update_vector(synic, vector); /* Load SynIC vectors into EOI exit bitmap */ kvm_make_request(KVM_REQ_SCAN_IOAPIC, hv_synic_to_vcpu(synic)); return 0; } static struct kvm_vcpu *get_vcpu_by_vpidx(struct kvm *kvm, u32 vpidx) { struct kvm_vcpu *vcpu = NULL; unsigned long i; if (vpidx >= KVM_MAX_VCPUS) return NULL; vcpu = kvm_get_vcpu(kvm, vpidx); if (vcpu && kvm_hv_get_vpindex(vcpu) == vpidx) return vcpu; kvm_for_each_vcpu(i, vcpu, kvm) if (kvm_hv_get_vpindex(vcpu) == vpidx) return vcpu; return NULL; } static struct kvm_vcpu_hv_synic *synic_get(struct kvm *kvm, u32 vpidx) { struct kvm_vcpu *vcpu; struct kvm_vcpu_hv_synic *synic; vcpu = get_vcpu_by_vpidx(kvm, vpidx); if (!vcpu || !to_hv_vcpu(vcpu)) return NULL; synic = to_hv_synic(vcpu); return (synic->active) ? synic : NULL; } static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint) { struct kvm *kvm = vcpu->kvm; struct kvm_vcpu_hv_synic *synic = to_hv_synic(vcpu); struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); struct kvm_vcpu_hv_stimer *stimer; int gsi, idx; trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint); /* Try to deliver pending Hyper-V SynIC timers messages */ for (idx = 0; idx < ARRAY_SIZE(hv_vcpu->stimer); idx++) { stimer = &hv_vcpu->stimer[idx]; if (stimer->msg_pending && stimer->config.enable && !stimer->config.direct_mode && stimer->config.sintx == sint) stimer_mark_pending(stimer, false); } idx = srcu_read_lock(&kvm->irq_srcu); gsi = atomic_read(&synic->sint_to_gsi[sint]); if (gsi != -1) kvm_notify_acked_gsi(kvm, gsi); srcu_read_unlock(&kvm->irq_srcu, idx); } static void synic_exit(struct kvm_vcpu_hv_synic *synic, u32 msr) { struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic); struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); hv_vcpu->exit.type = KVM_EXIT_HYPERV_SYNIC; hv_vcpu->exit.u.synic.msr = msr; hv_vcpu->exit.u.synic.control = synic->control; hv_vcpu->exit.u.synic.evt_page = synic->evt_page; hv_vcpu->exit.u.synic.msg_page = synic->msg_page; kvm_make_request(KVM_REQ_HV_EXIT, vcpu); } static int synic_set_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 data, bool host) { struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic); int ret; if (!synic->active && (!host || data)) return 1; trace_kvm_hv_synic_set_msr(vcpu->vcpu_id, msr, data, host); ret = 0; switch (msr) { case HV_X64_MSR_SCONTROL: synic->control = data; if (!host) synic_exit(synic, msr); break; case HV_X64_MSR_SVERSION: if (!host) { ret = 1; break; } synic->version = data; break; case HV_X64_MSR_SIEFP: if ((data & HV_SYNIC_SIEFP_ENABLE) && !host && !synic->dont_zero_synic_pages) if (kvm_clear_guest(vcpu->kvm, data & PAGE_MASK, PAGE_SIZE)) { ret = 1; break; } synic->evt_page = data; if (!host) synic_exit(synic, msr); break; case HV_X64_MSR_SIMP: if ((data & HV_SYNIC_SIMP_ENABLE) && !host && !synic->dont_zero_synic_pages) if (kvm_clear_guest(vcpu->kvm, data & PAGE_MASK, PAGE_SIZE)) { ret = 1; break; } synic->msg_page = data; if (!host) synic_exit(synic, msr); break; case HV_X64_MSR_EOM: { int i; if (!synic->active) break; for (i = 0; i < ARRAY_SIZE(synic->sint); i++) kvm_hv_notify_acked_sint(vcpu, i); break; } case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: ret = synic_set_sint(synic, msr - HV_X64_MSR_SINT0, data, host); break; default: ret = 1; break; } return ret; } static bool kvm_hv_is_syndbg_enabled(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); return hv_vcpu->cpuid_cache.syndbg_cap_eax & HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING; } static int kvm_hv_syndbg_complete_userspace(struct kvm_vcpu *vcpu) { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); if (vcpu->run->hyperv.u.syndbg.msr == HV_X64_MSR_SYNDBG_CONTROL) hv->hv_syndbg.control.status = vcpu->run->hyperv.u.syndbg.status; return 1; } static void syndbg_exit(struct kvm_vcpu *vcpu, u32 msr) { struct kvm_hv_syndbg *syndbg = to_hv_syndbg(vcpu); struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); hv_vcpu->exit.type = KVM_EXIT_HYPERV_SYNDBG; hv_vcpu->exit.u.syndbg.msr = msr; hv_vcpu->exit.u.syndbg.control = syndbg->control.control; hv_vcpu->exit.u.syndbg.send_page = syndbg->control.send_page; hv_vcpu->exit.u.syndbg.recv_page = syndbg->control.recv_page; hv_vcpu->exit.u.syndbg.pending_page = syndbg->control.pending_page; vcpu->arch.complete_userspace_io = kvm_hv_syndbg_complete_userspace; kvm_make_request(KVM_REQ_HV_EXIT, vcpu); } static int syndbg_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) { struct kvm_hv_syndbg *syndbg = to_hv_syndbg(vcpu); if (!kvm_hv_is_syndbg_enabled(vcpu) && !host) return 1; trace_kvm_hv_syndbg_set_msr(vcpu->vcpu_id, to_hv_vcpu(vcpu)->vp_index, msr, data); switch (msr) { case HV_X64_MSR_SYNDBG_CONTROL: syndbg->control.control = data; if (!host) syndbg_exit(vcpu, msr); break; case HV_X64_MSR_SYNDBG_STATUS: syndbg->control.status = data; break; case HV_X64_MSR_SYNDBG_SEND_BUFFER: syndbg->control.send_page = data; break; case HV_X64_MSR_SYNDBG_RECV_BUFFER: syndbg->control.recv_page = data; break; case HV_X64_MSR_SYNDBG_PENDING_BUFFER: syndbg->control.pending_page = data; if (!host) syndbg_exit(vcpu, msr); break; case HV_X64_MSR_SYNDBG_OPTIONS: syndbg->options = data; break; default: break; } return 0; } static int syndbg_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { struct kvm_hv_syndbg *syndbg = to_hv_syndbg(vcpu); if (!kvm_hv_is_syndbg_enabled(vcpu) && !host) return 1; switch (msr) { case HV_X64_MSR_SYNDBG_CONTROL: *pdata = syndbg->control.control; break; case HV_X64_MSR_SYNDBG_STATUS: *pdata = syndbg->control.status; break; case HV_X64_MSR_SYNDBG_SEND_BUFFER: *pdata = syndbg->control.send_page; break; case HV_X64_MSR_SYNDBG_RECV_BUFFER: *pdata = syndbg->control.recv_page; break; case HV_X64_MSR_SYNDBG_PENDING_BUFFER: *pdata = syndbg->control.pending_page; break; case HV_X64_MSR_SYNDBG_OPTIONS: *pdata = syndbg->options; break; default: break; } trace_kvm_hv_syndbg_get_msr(vcpu->vcpu_id, kvm_hv_get_vpindex(vcpu), msr, *pdata); return 0; } static int synic_get_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 *pdata, bool host) { int ret; if (!synic->active && !host) return 1; ret = 0; switch (msr) { case HV_X64_MSR_SCONTROL: *pdata = synic->control; break; case HV_X64_MSR_SVERSION: *pdata = synic->version; break; case HV_X64_MSR_SIEFP: *pdata = synic->evt_page; break; case HV_X64_MSR_SIMP: *pdata = synic->msg_page; break; case HV_X64_MSR_EOM: *pdata = 0; break; case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: *pdata = atomic64_read(&synic->sint[msr - HV_X64_MSR_SINT0]); break; default: ret = 1; break; } return ret; } static int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint) { struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic); struct kvm_lapic_irq irq; int ret, vector; if (KVM_BUG_ON(!lapic_in_kernel(vcpu), vcpu->kvm)) return -EINVAL; if (sint >= ARRAY_SIZE(synic->sint)) return -EINVAL; vector = synic_get_sint_vector(synic_read_sint(synic, sint)); if (vector < 0) return -ENOENT; memset(&irq, 0, sizeof(irq)); irq.shorthand = APIC_DEST_SELF; irq.dest_mode = APIC_DEST_PHYSICAL; irq.delivery_mode = APIC_DM_FIXED; irq.vector = vector; irq.level = 1; ret = kvm_irq_delivery_to_apic(vcpu->kvm, vcpu->arch.apic, &irq); trace_kvm_hv_synic_set_irq(vcpu->vcpu_id, sint, irq.vector, ret); return ret; } int kvm_hv_synic_set_irq(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int irq_source_id, int level, bool line_status) { struct kvm_vcpu_hv_synic *synic; if (!level) return -1; synic = synic_get(kvm, e->hv_sint.vcpu); if (!synic) return -EINVAL; return synic_set_irq(synic, e->hv_sint.sint); } void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector) { struct kvm_vcpu_hv_synic *synic = to_hv_synic(vcpu); int i; trace_kvm_hv_synic_send_eoi(vcpu->vcpu_id, vector); for (i = 0; i < ARRAY_SIZE(synic->sint); i++) if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector) kvm_hv_notify_acked_sint(vcpu, i); } static int kvm_hv_set_sint_gsi(struct kvm *kvm, u32 vpidx, u32 sint, int gsi) { struct kvm_vcpu_hv_synic *synic; synic = synic_get(kvm, vpidx); if (!synic) return -EINVAL; if (sint >= ARRAY_SIZE(synic->sint_to_gsi)) return -EINVAL; atomic_set(&synic->sint_to_gsi[sint], gsi); return 0; } void kvm_hv_irq_routing_update(struct kvm *kvm) { struct kvm_irq_routing_table *irq_rt; struct kvm_kernel_irq_routing_entry *e; u32 gsi; irq_rt = srcu_dereference_check(kvm->irq_routing, &kvm->irq_srcu, lockdep_is_held(&kvm->irq_lock)); for (gsi = 0; gsi < irq_rt->nr_rt_entries; gsi++) { hlist_for_each_entry(e, &irq_rt->map[gsi], link) { if (e->type == KVM_IRQ_ROUTING_HV_SINT) kvm_hv_set_sint_gsi(kvm, e->hv_sint.vcpu, e->hv_sint.sint, gsi); } } } static void synic_init(struct kvm_vcpu_hv_synic *synic) { int i; memset(synic, 0, sizeof(*synic)); synic->version = HV_SYNIC_VERSION_1; for (i = 0; i < ARRAY_SIZE(synic->sint); i++) { atomic64_set(&synic->sint[i], HV_SYNIC_SINT_MASKED); atomic_set(&synic->sint_to_gsi[i], -1); } } static u64 get_time_ref_counter(struct kvm *kvm) { struct kvm_hv *hv = to_kvm_hv(kvm); struct kvm_vcpu *vcpu; u64 tsc; /* * Fall back to get_kvmclock_ns() when TSC page hasn't been set up, * is broken, disabled or being updated. */ if (hv->hv_tsc_page_status != HV_TSC_PAGE_SET) return div_u64(get_kvmclock_ns(kvm), 100); vcpu = kvm_get_vcpu(kvm, 0); tsc = kvm_read_l1_tsc(vcpu, rdtsc()); return mul_u64_u64_shr(tsc, hv->tsc_ref.tsc_scale, 64) + hv->tsc_ref.tsc_offset; } static void stimer_mark_pending(struct kvm_vcpu_hv_stimer *stimer, bool vcpu_kick) { struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); set_bit(stimer->index, to_hv_vcpu(vcpu)->stimer_pending_bitmap); kvm_make_request(KVM_REQ_HV_STIMER, vcpu); if (vcpu_kick) kvm_vcpu_kick(vcpu); } static void stimer_cleanup(struct kvm_vcpu_hv_stimer *stimer) { struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); trace_kvm_hv_stimer_cleanup(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index); hrtimer_cancel(&stimer->timer); clear_bit(stimer->index, to_hv_vcpu(vcpu)->stimer_pending_bitmap); stimer->msg_pending = false; stimer->exp_time = 0; } static enum hrtimer_restart stimer_timer_callback(struct hrtimer *timer) { struct kvm_vcpu_hv_stimer *stimer; stimer = container_of(timer, struct kvm_vcpu_hv_stimer, timer); trace_kvm_hv_stimer_callback(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index); stimer_mark_pending(stimer, true); return HRTIMER_NORESTART; } /* * stimer_start() assumptions: * a) stimer->count is not equal to 0 * b) stimer->config has HV_STIMER_ENABLE flag */ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer) { u64 time_now; ktime_t ktime_now; time_now = get_time_ref_counter(hv_stimer_to_vcpu(stimer)->kvm); ktime_now = ktime_get(); if (stimer->config.periodic) { if (stimer->exp_time) { if (time_now >= stimer->exp_time) { u64 remainder; div64_u64_rem(time_now - stimer->exp_time, stimer->count, &remainder); stimer->exp_time = time_now + (stimer->count - remainder); } } else stimer->exp_time = time_now + stimer->count; trace_kvm_hv_stimer_start_periodic( hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index, time_now, stimer->exp_time); hrtimer_start(&stimer->timer, ktime_add_ns(ktime_now, 100 * (stimer->exp_time - time_now)), HRTIMER_MODE_ABS); return 0; } stimer->exp_time = stimer->count; if (time_now >= stimer->count) { /* * Expire timer according to Hypervisor Top-Level Functional * specification v4(15.3.1): * "If a one shot is enabled and the specified count is in * the past, it will expire immediately." */ stimer_mark_pending(stimer, false); return 0; } trace_kvm_hv_stimer_start_one_shot(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index, time_now, stimer->count); hrtimer_start(&stimer->timer, ktime_add_ns(ktime_now, 100 * (stimer->count - time_now)), HRTIMER_MODE_ABS); return 0; } static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config, bool host) { union hv_stimer_config new_config = {.as_uint64 = config}, old_config = {.as_uint64 = stimer->config.as_uint64}; struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); struct kvm_vcpu_hv_synic *synic = to_hv_synic(vcpu); if (!synic->active && (!host || config)) return 1; if (unlikely(!host && hv_vcpu->enforce_cpuid && new_config.direct_mode && !(hv_vcpu->cpuid_cache.features_edx & HV_STIMER_DIRECT_MODE_AVAILABLE))) return 1; trace_kvm_hv_stimer_set_config(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index, config, host); stimer_cleanup(stimer); if (old_config.enable && !new_config.direct_mode && new_config.sintx == 0) new_config.enable = 0; stimer->config.as_uint64 = new_config.as_uint64; if (stimer->config.enable) stimer_mark_pending(stimer, false); return 0; } static int stimer_set_count(struct kvm_vcpu_hv_stimer *stimer, u64 count, bool host) { struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); struct kvm_vcpu_hv_synic *synic = to_hv_synic(vcpu); if (!synic->active && (!host || count)) return 1; trace_kvm_hv_stimer_set_count(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index, count, host); stimer_cleanup(stimer); stimer->count = count; if (!host) { if (stimer->count == 0) stimer->config.enable = 0; else if (stimer->config.auto_enable) stimer->config.enable = 1; } if (stimer->config.enable) stimer_mark_pending(stimer, false); return 0; } static int stimer_get_config(struct kvm_vcpu_hv_stimer *stimer, u64 *pconfig) { *pconfig = stimer->config.as_uint64; return 0; } static int stimer_get_count(struct kvm_vcpu_hv_stimer *stimer, u64 *pcount) { *pcount = stimer->count; return 0; } static int synic_deliver_msg(struct kvm_vcpu_hv_synic *synic, u32 sint, struct hv_message *src_msg, bool no_retry) { struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic); int msg_off = offsetof(struct hv_message_page, sint_message[sint]); gfn_t msg_page_gfn; struct hv_message_header hv_hdr; int r; if (!(synic->msg_page & HV_SYNIC_SIMP_ENABLE)) return -ENOENT; msg_page_gfn = synic->msg_page >> PAGE_SHIFT; /* * Strictly following the spec-mandated ordering would assume setting * .msg_pending before checking .message_type. However, this function * is only called in vcpu context so the entire update is atomic from * guest POV and thus the exact order here doesn't matter. */ r = kvm_vcpu_read_guest_page(vcpu, msg_page_gfn, &hv_hdr.message_type, msg_off + offsetof(struct hv_message, header.message_type), sizeof(hv_hdr.message_type)); if (r < 0) return r; if (hv_hdr.message_type != HVMSG_NONE) { if (no_retry) return 0; hv_hdr.message_flags.msg_pending = 1; r = kvm_vcpu_write_guest_page(vcpu, msg_page_gfn, &hv_hdr.message_flags, msg_off + offsetof(struct hv_message, header.message_flags), sizeof(hv_hdr.message_flags)); if (r < 0) return r; return -EAGAIN; } r = kvm_vcpu_write_guest_page(vcpu, msg_page_gfn, src_msg, msg_off, sizeof(src_msg->header) + src_msg->header.payload_size); if (r < 0) return r; r = synic_set_irq(synic, sint); if (r < 0) return r; if (r == 0) return -EFAULT; return 0; } static int stimer_send_msg(struct kvm_vcpu_hv_stimer *stimer) { struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); struct hv_message *msg = &stimer->msg; struct hv_timer_message_payload *payload = (struct hv_timer_message_payload *)&msg->u.payload; /* * To avoid piling up periodic ticks, don't retry message * delivery for them (within "lazy" lost ticks policy). */ bool no_retry = stimer->config.periodic; payload->expiration_time = stimer->exp_time; payload->delivery_time = get_time_ref_counter(vcpu->kvm); return synic_deliver_msg(to_hv_synic(vcpu), stimer->config.sintx, msg, no_retry); } static int stimer_notify_direct(struct kvm_vcpu_hv_stimer *stimer) { struct kvm_vcpu *vcpu = hv_stimer_to_vcpu(stimer); struct kvm_lapic_irq irq = { .delivery_mode = APIC_DM_FIXED, .vector = stimer->config.apic_vector }; if (lapic_in_kernel(vcpu)) return !kvm_apic_set_irq(vcpu, &irq, NULL); return 0; } static void stimer_expiration(struct kvm_vcpu_hv_stimer *stimer) { int r, direct = stimer->config.direct_mode; stimer->msg_pending = true; if (!direct) r = stimer_send_msg(stimer); else r = stimer_notify_direct(stimer); trace_kvm_hv_stimer_expiration(hv_stimer_to_vcpu(stimer)->vcpu_id, stimer->index, direct, r); if (!r) { stimer->msg_pending = false; if (!(stimer->config.periodic)) stimer->config.enable = 0; } } void kvm_hv_process_stimers(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); struct kvm_vcpu_hv_stimer *stimer; u64 time_now, exp_time; int i; if (!hv_vcpu) return; for (i = 0; i < ARRAY_SIZE(hv_vcpu->stimer); i++) if (test_and_clear_bit(i, hv_vcpu->stimer_pending_bitmap)) { stimer = &hv_vcpu->stimer[i]; if (stimer->config.enable) { exp_time = stimer->exp_time; if (exp_time) { time_now = get_time_ref_counter(vcpu->kvm); if (time_now >= exp_time) stimer_expiration(stimer); } if ((stimer->config.enable) && stimer->count) { if (!stimer->msg_pending) stimer_start(stimer); } else stimer_cleanup(stimer); } } } void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); int i; if (!hv_vcpu) return; for (i = 0; i < ARRAY_SIZE(hv_vcpu->stimer); i++) stimer_cleanup(&hv_vcpu->stimer[i]); kfree(hv_vcpu); vcpu->arch.hyperv = NULL; } bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); if (!hv_vcpu) return false; if (!(hv_vcpu->hv_vapic & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE)) return false; return vcpu->arch.pv_eoi.msr_val & KVM_MSR_ENABLED; } EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_hv_assist_page_enabled); int kvm_hv_get_assist_page(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); if (!hv_vcpu || !kvm_hv_assist_page_enabled(vcpu)) return -EFAULT; return kvm_read_guest_cached(vcpu->kvm, &vcpu->arch.pv_eoi.data, &hv_vcpu->vp_assist_page, sizeof(struct hv_vp_assist_page)); } EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_hv_get_assist_page); static void stimer_prepare_msg(struct kvm_vcpu_hv_stimer *stimer) { struct hv_message *msg = &stimer->msg; struct hv_timer_message_payload *payload = (struct hv_timer_message_payload *)&msg->u.payload; memset(&msg->header, 0, sizeof(msg->header)); msg->header.message_type = HVMSG_TIMER_EXPIRED; msg->header.payload_size = sizeof(*payload); payload->timer_index = stimer->index; payload->expiration_time = 0; payload->delivery_time = 0; } static void stimer_init(struct kvm_vcpu_hv_stimer *stimer, int timer_index) { memset(stimer, 0, sizeof(*stimer)); stimer->index = timer_index; hrtimer_setup(&stimer->timer, stimer_timer_callback, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); stimer_prepare_msg(stimer); } int kvm_hv_vcpu_init(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); int i; if (hv_vcpu) return 0; hv_vcpu = kzalloc_obj(struct kvm_vcpu_hv, GFP_KERNEL_ACCOUNT); if (!hv_vcpu) return -ENOMEM; vcpu->arch.hyperv = hv_vcpu; hv_vcpu->vcpu = vcpu; synic_init(&hv_vcpu->synic); bitmap_zero(hv_vcpu->stimer_pending_bitmap, HV_SYNIC_STIMER_COUNT); for (i = 0; i < ARRAY_SIZE(hv_vcpu->stimer); i++) stimer_init(&hv_vcpu->stimer[i], i); hv_vcpu->vp_index = vcpu->vcpu_idx; for (i = 0; i < HV_NR_TLB_FLUSH_FIFOS; i++) { INIT_KFIFO(hv_vcpu->tlb_flush_fifo[i].entries); spin_lock_init(&hv_vcpu->tlb_flush_fifo[i].write_lock); } return 0; } int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages) { struct kvm_vcpu_hv_synic *synic; int r; r = kvm_hv_vcpu_init(vcpu); if (r) return r; synic = to_hv_synic(vcpu); synic->active = true; synic->dont_zero_synic_pages = dont_zero_synic_pages; synic->control = HV_SYNIC_CONTROL_ENABLE; return 0; } static bool kvm_hv_msr_partition_wide(u32 msr) { bool r = false; switch (msr) { case HV_X64_MSR_GUEST_OS_ID: case HV_X64_MSR_HYPERCALL: case HV_X64_MSR_REFERENCE_TSC: case HV_X64_MSR_TIME_REF_COUNT: case HV_X64_MSR_CRASH_CTL: case HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4: case HV_X64_MSR_RESET: case HV_X64_MSR_REENLIGHTENMENT_CONTROL: case HV_X64_MSR_TSC_EMULATION_CONTROL: case HV_X64_MSR_TSC_EMULATION_STATUS: case HV_X64_MSR_TSC_INVARIANT_CONTROL: case HV_X64_MSR_SYNDBG_OPTIONS: case HV_X64_MSR_SYNDBG_CONTROL ... HV_X64_MSR_SYNDBG_PENDING_BUFFER: r = true; break; } return r; } static int kvm_hv_msr_get_crash_data(struct kvm *kvm, u32 index, u64 *pdata) { struct kvm_hv *hv = to_kvm_hv(kvm); size_t size = ARRAY_SIZE(hv->hv_crash_param); if (WARN_ON_ONCE(index >= size)) return -EINVAL; *pdata = hv->hv_crash_param[array_index_nospec(index, size)]; return 0; } static int kvm_hv_msr_get_crash_ctl(struct kvm *kvm, u64 *pdata) { struct kvm_hv *hv = to_kvm_hv(kvm); *pdata = hv->hv_crash_ctl; return 0; } static int kvm_hv_msr_set_crash_ctl(struct kvm *kvm, u64 data) { struct kvm_hv *hv = to_kvm_hv(kvm); hv->hv_crash_ctl = data & HV_CRASH_CTL_CRASH_NOTIFY; return 0; } static int kvm_hv_msr_set_crash_data(struct kvm *kvm, u32 index, u64 data) { struct kvm_hv *hv = to_kvm_hv(kvm); size_t size = ARRAY_SIZE(hv->hv_crash_param); if (WARN_ON_ONCE(index >= size)) return -EINVAL; hv->hv_crash_param[array_index_nospec(index, size)] = data; return 0; } /* * The kvmclock and Hyper-V TSC page use similar formulas, and converting * between them is possible: * * kvmclock formula: * nsec = (ticks - tsc_timestamp) * tsc_to_system_mul * 2^(tsc_shift-32) * + system_time * * Hyper-V formula: * nsec/100 = ticks * scale / 2^64 + offset * * When tsc_timestamp = system_time = 0, offset is zero in the Hyper-V formula. * By dividing the kvmclock formula by 100 and equating what's left we get: * ticks * scale / 2^64 = ticks * tsc_to_system_mul * 2^(tsc_shift-32) / 100 * scale / 2^64 = tsc_to_system_mul * 2^(tsc_shift-32) / 100 * scale = tsc_to_system_mul * 2^(32+tsc_shift) / 100 * * Now expand the kvmclock formula and divide by 100: * nsec = ticks * tsc_to_system_mul * 2^(tsc_shift-32) * - tsc_timestamp * tsc_to_system_mul * 2^(tsc_shift-32) * + system_time * nsec/100 = ticks * tsc_to_system_mul * 2^(tsc_shift-32) / 100 * - tsc_timestamp * tsc_to_system_mul * 2^(tsc_shift-32) / 100 * + system_time / 100 * * Replace tsc_to_system_mul * 2^(tsc_shift-32) / 100 by scale / 2^64: * nsec/100 = ticks * scale / 2^64 * - tsc_timestamp * scale / 2^64 * + system_time / 100 * * Equate with the Hyper-V formula so that ticks * scale / 2^64 cancels out: * offset = system_time / 100 - tsc_timestamp * scale / 2^64 * * These two equivalencies are implemented in this function. */ static bool compute_tsc_page_parameters(struct pvclock_vcpu_time_info *hv_clock, struct ms_hyperv_tsc_page *tsc_ref) { u64 max_mul; if (!(hv_clock->flags & PVCLOCK_TSC_STABLE_BIT)) return false; /* * check if scale would overflow, if so we use the time ref counter * tsc_to_system_mul * 2^(tsc_shift+32) / 100 >= 2^64 * tsc_to_system_mul / 100 >= 2^(32-tsc_shift) * tsc_to_system_mul >= 100 * 2^(32-tsc_shift) */ max_mul = 100ull << (32 - hv_clock->tsc_shift); if (hv_clock->tsc_to_system_mul >= max_mul) return false; /* * Otherwise compute the scale and offset according to the formulas * derived above. */ tsc_ref->tsc_scale = mul_u64_u32_div(1ULL << (32 + hv_clock->tsc_shift), hv_clock->tsc_to_system_mul, 100); tsc_ref->tsc_offset = hv_clock->system_time; do_div(tsc_ref->tsc_offset, 100); tsc_ref->tsc_offset -= mul_u64_u64_shr(hv_clock->tsc_timestamp, tsc_ref->tsc_scale, 64); return true; } /* * Don't touch TSC page values if the guest has opted for TSC emulation after * migration. KVM doesn't fully support reenlightenment notifications and TSC * access emulation and Hyper-V is known to expect the values in TSC page to * stay constant before TSC access emulation is disabled from guest side * (HV_X64_MSR_TSC_EMULATION_STATUS). KVM userspace is expected to preserve TSC * frequency and guest visible TSC value across migration (and prevent it when * TSC scaling is unsupported). */ static inline bool tsc_page_update_unsafe(struct kvm_hv *hv) { return (hv->hv_tsc_page_status != HV_TSC_PAGE_GUEST_CHANGED) && hv->hv_tsc_emulation_control; } void kvm_hv_setup_tsc_page(struct kvm *kvm, struct pvclock_vcpu_time_info *hv_clock) { struct kvm_hv *hv = to_kvm_hv(kvm); u32 tsc_seq; u64 gfn; BUILD_BUG_ON(sizeof(tsc_seq) != sizeof(hv->tsc_ref.tsc_sequence)); BUILD_BUG_ON(offsetof(struct ms_hyperv_tsc_page, tsc_sequence) != 0); guard(mutex)(&hv->hv_lock); if (hv->hv_tsc_page_status == HV_TSC_PAGE_BROKEN || hv->hv_tsc_page_status == HV_TSC_PAGE_SET || hv->hv_tsc_page_status == HV_TSC_PAGE_UNSET) return; if (!(hv->hv_tsc_page & HV_X64_MSR_TSC_REFERENCE_ENABLE)) return; gfn = hv->hv_tsc_page >> HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT; /* * Because the TSC parameters only vary when there is a * change in the master clock, do not bother with caching. */ if (unlikely(kvm_read_guest(kvm, gfn_to_gpa(gfn), &tsc_seq, sizeof(tsc_seq)))) goto out_err; if (tsc_seq && tsc_page_update_unsafe(hv)) { if (kvm_read_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref))) goto out_err; hv->hv_tsc_page_status = HV_TSC_PAGE_SET; return; } /* * While we're computing and writing the parameters, force the * guest to use the time reference count MSR. */ hv->tsc_ref.tsc_sequence = 0; if (kvm_write_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref.tsc_sequence))) goto out_err; if (!compute_tsc_page_parameters(hv_clock, &hv->tsc_ref)) goto out_err; /* Ensure sequence is zero before writing the rest of the struct. */ smp_wmb(); if (kvm_write_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref))) goto out_err; /* * Now switch to the TSC page mechanism by writing the sequence. */ tsc_seq++; if (tsc_seq == 0xFFFFFFFF || tsc_seq == 0) tsc_seq = 1; /* Write the struct entirely before the non-zero sequence. */ smp_wmb(); hv->tsc_ref.tsc_sequence = tsc_seq; if (kvm_write_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref.tsc_sequence))) goto out_err; hv->hv_tsc_page_status = HV_TSC_PAGE_SET; return; out_err: hv->hv_tsc_page_status = HV_TSC_PAGE_BROKEN; } void kvm_hv_request_tsc_page_update(struct kvm *kvm) { struct kvm_hv *hv = to_kvm_hv(kvm); mutex_lock(&hv->hv_lock); if (hv->hv_tsc_page_status == HV_TSC_PAGE_SET && !tsc_page_update_unsafe(hv)) hv->hv_tsc_page_status = HV_TSC_PAGE_HOST_CHANGED; mutex_unlock(&hv->hv_lock); } static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) { if (!hv_vcpu->enforce_cpuid) return true; switch (msr) { case HV_X64_MSR_GUEST_OS_ID: case HV_X64_MSR_HYPERCALL: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_HYPERCALL_AVAILABLE; case HV_X64_MSR_VP_RUNTIME: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_VP_RUNTIME_AVAILABLE; case HV_X64_MSR_TIME_REF_COUNT: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_TIME_REF_COUNT_AVAILABLE; case HV_X64_MSR_VP_INDEX: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_VP_INDEX_AVAILABLE; case HV_X64_MSR_RESET: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_RESET_AVAILABLE; case HV_X64_MSR_REFERENCE_TSC: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_REFERENCE_TSC_AVAILABLE; case HV_X64_MSR_SCONTROL: case HV_X64_MSR_SVERSION: case HV_X64_MSR_SIEFP: case HV_X64_MSR_SIMP: case HV_X64_MSR_EOM: case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_SYNIC_AVAILABLE; case HV_X64_MSR_STIMER0_CONFIG: case HV_X64_MSR_STIMER1_CONFIG: case HV_X64_MSR_STIMER2_CONFIG: case HV_X64_MSR_STIMER3_CONFIG: case HV_X64_MSR_STIMER0_COUNT: case HV_X64_MSR_STIMER1_COUNT: case HV_X64_MSR_STIMER2_COUNT: case HV_X64_MSR_STIMER3_COUNT: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_SYNTIMER_AVAILABLE; case HV_X64_MSR_EOI: case HV_X64_MSR_ICR: case HV_X64_MSR_TPR: case HV_X64_MSR_VP_ASSIST_PAGE: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_APIC_ACCESS_AVAILABLE; case HV_X64_MSR_TSC_FREQUENCY: case HV_X64_MSR_APIC_FREQUENCY: return hv_vcpu->cpuid_cache.features_eax & HV_ACCESS_FREQUENCY_MSRS; case HV_X64_MSR_REENLIGHTENMENT_CONTROL: case HV_X64_MSR_TSC_EMULATION_CONTROL: case HV_X64_MSR_TSC_EMULATION_STATUS: return hv_vcpu->cpuid_cache.features_eax & HV_ACCESS_REENLIGHTENMENT; case HV_X64_MSR_TSC_INVARIANT_CONTROL: return hv_vcpu->cpuid_cache.features_eax & HV_ACCESS_TSC_INVARIANT; case HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4: case HV_X64_MSR_CRASH_CTL: return hv_vcpu->cpuid_cache.features_edx & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; case HV_X64_MSR_SYNDBG_OPTIONS: case HV_X64_MSR_SYNDBG_CONTROL ... HV_X64_MSR_SYNDBG_PENDING_BUFFER: return hv_vcpu->cpuid_cache.features_edx & HV_FEATURE_DEBUG_MSRS_AVAILABLE; default: break; } return false; } #define KVM_HV_WIN2016_GUEST_ID 0x1040a00003839 #define KVM_HV_WIN2016_GUEST_ID_MASK (~GENMASK_ULL(23, 16)) /* mask out the service version */ /* * Hyper-V enabled Windows Server 2016 SMP VMs fail to boot in !XSAVES && XSAVEC * configuration. * Such configuration can result from, for example, AMD Erratum 1386 workaround. * * Print a notice so users aren't left wondering what's suddenly gone wrong. */ static void __kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu) { struct kvm *kvm = vcpu->kvm; struct kvm_hv *hv = to_kvm_hv(kvm); /* Check again under the hv_lock. */ if (hv->xsaves_xsavec_checked) return; if ((hv->hv_guest_os_id & KVM_HV_WIN2016_GUEST_ID_MASK) != KVM_HV_WIN2016_GUEST_ID) return; hv->xsaves_xsavec_checked = true; /* UP configurations aren't affected */ if (atomic_read(&kvm->online_vcpus) < 2) return; if (guest_cpuid_has(vcpu, X86_FEATURE_XSAVES) || !guest_cpu_cap_has(vcpu, X86_FEATURE_XSAVEC)) return; pr_notice_ratelimited("Booting SMP Windows KVM VM with !XSAVES && XSAVEC. " "If it fails to boot try disabling XSAVEC in the VM config.\n"); } void kvm_hv_xsaves_xsavec_maybe_warn(struct kvm_vcpu *vcpu) { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); if (!vcpu->arch.hyperv_enabled || hv->xsaves_xsavec_checked) return; mutex_lock(&hv->hv_lock); __kvm_hv_xsaves_xsavec_maybe_warn(vcpu); mutex_unlock(&hv->hv_lock); } static int kvm_hv_set_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) { struct kvm *kvm = vcpu->kvm; struct kvm_hv *hv = to_kvm_hv(kvm); if (unlikely(!host && !hv_check_msr_access(to_hv_vcpu(vcpu), msr))) return 1; switch (msr) { case HV_X64_MSR_GUEST_OS_ID: hv->hv_guest_os_id = data; /* setting guest os id to zero disables hypercall page */ if (!hv->hv_guest_os_id) hv->hv_hypercall &= ~HV_X64_MSR_HYPERCALL_ENABLE; break; case HV_X64_MSR_HYPERCALL: { u8 instructions[9]; int i = 0; u64 addr; /* if guest os id is not set hypercall should remain disabled */ if (!hv->hv_guest_os_id) break; if (!(data & HV_X64_MSR_HYPERCALL_ENABLE)) { hv->hv_hypercall = data; break; } /* * If Xen and Hyper-V hypercalls are both enabled, disambiguate * the same way Xen itself does, by setting the bit 31 of EAX * which is RsvdZ in the 32-bit Hyper-V hypercall ABI and just * going to be clobbered on 64-bit. */ if (kvm_xen_hypercall_enabled(kvm)) { /* orl $0x80000000, %eax */ instructions[i++] = 0x0d; instructions[i++] = 0x00; instructions[i++] = 0x00; instructions[i++] = 0x00; instructions[i++] = 0x80; } /* vmcall/vmmcall */ kvm_x86_call(patch_hypercall)(vcpu, instructions + i); i += 3; /* ret */ ((unsigned char *)instructions)[i++] = 0xc3; addr = data & HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_MASK; if (kvm_vcpu_write_guest(vcpu, addr, instructions, i)) return 1; hv->hv_hypercall = data; break; } case HV_X64_MSR_REFERENCE_TSC: hv->hv_tsc_page = data; if (hv->hv_tsc_page & HV_X64_MSR_TSC_REFERENCE_ENABLE) { if (!host) hv->hv_tsc_page_status = HV_TSC_PAGE_GUEST_CHANGED; else hv->hv_tsc_page_status = HV_TSC_PAGE_HOST_CHANGED; kvm_make_request(KVM_REQ_MASTERCLOCK_UPDATE, vcpu); } else { hv->hv_tsc_page_status = HV_TSC_PAGE_UNSET; } break; case HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4: return kvm_hv_msr_set_crash_data(kvm, msr - HV_X64_MSR_CRASH_P0, data); case HV_X64_MSR_CRASH_CTL: if (host) return kvm_hv_msr_set_crash_ctl(kvm, data); if (data & HV_CRASH_CTL_CRASH_NOTIFY) { vcpu_debug(vcpu, "hv crash (0x%llx 0x%llx 0x%llx 0x%llx 0x%llx)\n", hv->hv_crash_param[0], hv->hv_crash_param[1], hv->hv_crash_param[2], hv->hv_crash_param[3], hv->hv_crash_param[4]); /* Send notification about crash to user space */ kvm_make_request(KVM_REQ_HV_CRASH, vcpu); } break; case HV_X64_MSR_RESET: if (data == 1) { vcpu_debug(vcpu, "hyper-v reset requested\n"); kvm_make_request(KVM_REQ_HV_RESET, vcpu); } break; case HV_X64_MSR_REENLIGHTENMENT_CONTROL: hv->hv_reenlightenment_control = data; break; case HV_X64_MSR_TSC_EMULATION_CONTROL: hv->hv_tsc_emulation_control = data; break; case HV_X64_MSR_TSC_EMULATION_STATUS: if (data && !host) return 1; hv->hv_tsc_emulation_status = data; break; case HV_X64_MSR_TIME_REF_COUNT: /* read-only, but still ignore it if host-initiated */ if (!host) return 1; break; case HV_X64_MSR_TSC_INVARIANT_CONTROL: /* Only bit 0 is supported */ if (data & ~HV_EXPOSE_INVARIANT_TSC) return 1; /* The feature can't be disabled from the guest */ if (!host && hv->hv_invtsc_control && !data) return 1; hv->hv_invtsc_control = data; break; case HV_X64_MSR_SYNDBG_OPTIONS: case HV_X64_MSR_SYNDBG_CONTROL ... HV_X64_MSR_SYNDBG_PENDING_BUFFER: return syndbg_set_msr(vcpu, msr, data, host); default: kvm_pr_unimpl_wrmsr(vcpu, msr, data); return 1; } return 0; } /* Calculate cpu time spent by current task in 100ns units */ static u64 current_task_runtime_100ns(void) { u64 utime, stime; task_cputime_adjusted(current, &utime, &stime); return div_u64(utime + stime, 100); } static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); if (unlikely(!host && !hv_check_msr_access(hv_vcpu, msr))) return 1; switch (msr) { case HV_X64_MSR_VP_INDEX: { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); u32 new_vp_index = (u32)data; if (!host || new_vp_index >= KVM_MAX_VCPUS) return 1; if (new_vp_index == hv_vcpu->vp_index) return 0; /* * The VP index is initialized to vcpu_index by * kvm_hv_vcpu_postcreate so they initially match. Now the * VP index is changing, adjust num_mismatched_vp_indexes if * it now matches or no longer matches vcpu_idx. */ if (hv_vcpu->vp_index == vcpu->vcpu_idx) atomic_inc(&hv->num_mismatched_vp_indexes); else if (new_vp_index == vcpu->vcpu_idx) atomic_dec(&hv->num_mismatched_vp_indexes); hv_vcpu->vp_index = new_vp_index; break; } case HV_X64_MSR_VP_ASSIST_PAGE: { u64 gfn; unsigned long addr; if (!(data & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE)) { hv_vcpu->hv_vapic = data; if (kvm_lapic_set_pv_eoi(vcpu, 0, 0)) return 1; break; } gfn = data >> HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT; addr = kvm_vcpu_gfn_to_hva(vcpu, gfn); if (kvm_is_error_hva(addr)) return 1; /* * Clear apic_assist portion of struct hv_vp_assist_page * only, there can be valuable data in the rest which needs * to be preserved e.g. on migration. */ if (put_user(0, (u32 __user *)addr)) return 1; hv_vcpu->hv_vapic = data; kvm_vcpu_mark_page_dirty(vcpu, gfn); if (kvm_lapic_set_pv_eoi(vcpu, gfn_to_gpa(gfn) | KVM_MSR_ENABLED, sizeof(struct hv_vp_assist_page))) return 1; break; } case HV_X64_MSR_EOI: return kvm_hv_vapic_msr_write(vcpu, APIC_EOI, data); case HV_X64_MSR_ICR: return kvm_hv_vapic_msr_write(vcpu, APIC_ICR, data); case HV_X64_MSR_TPR: return kvm_hv_vapic_msr_write(vcpu, APIC_TASKPRI, data); case HV_X64_MSR_VP_RUNTIME: if (!host) return 1; hv_vcpu->runtime_offset = data - current_task_runtime_100ns(); break; case HV_X64_MSR_SCONTROL: case HV_X64_MSR_SVERSION: case HV_X64_MSR_SIEFP: case HV_X64_MSR_SIMP: case HV_X64_MSR_EOM: case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: return synic_set_msr(to_hv_synic(vcpu), msr, data, host); case HV_X64_MSR_STIMER0_CONFIG: case HV_X64_MSR_STIMER1_CONFIG: case HV_X64_MSR_STIMER2_CONFIG: case HV_X64_MSR_STIMER3_CONFIG: { int timer_index = (msr - HV_X64_MSR_STIMER0_CONFIG)/2; return stimer_set_config(to_hv_stimer(vcpu, timer_index), data, host); } case HV_X64_MSR_STIMER0_COUNT: case HV_X64_MSR_STIMER1_COUNT: case HV_X64_MSR_STIMER2_COUNT: case HV_X64_MSR_STIMER3_COUNT: { int timer_index = (msr - HV_X64_MSR_STIMER0_COUNT)/2; return stimer_set_count(to_hv_stimer(vcpu, timer_index), data, host); } case HV_X64_MSR_TSC_FREQUENCY: case HV_X64_MSR_APIC_FREQUENCY: /* read-only, but still ignore it if host-initiated */ if (!host) return 1; break; default: kvm_pr_unimpl_wrmsr(vcpu, msr, data); return 1; } return 0; } static int kvm_hv_get_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { u64 data = 0; struct kvm *kvm = vcpu->kvm; struct kvm_hv *hv = to_kvm_hv(kvm); if (unlikely(!host && !hv_check_msr_access(to_hv_vcpu(vcpu), msr))) return 1; switch (msr) { case HV_X64_MSR_GUEST_OS_ID: data = hv->hv_guest_os_id; break; case HV_X64_MSR_HYPERCALL: data = hv->hv_hypercall; break; case HV_X64_MSR_TIME_REF_COUNT: data = get_time_ref_counter(kvm); break; case HV_X64_MSR_REFERENCE_TSC: data = hv->hv_tsc_page; break; case HV_X64_MSR_CRASH_P0 ... HV_X64_MSR_CRASH_P4: return kvm_hv_msr_get_crash_data(kvm, msr - HV_X64_MSR_CRASH_P0, pdata); case HV_X64_MSR_CRASH_CTL: return kvm_hv_msr_get_crash_ctl(kvm, pdata); case HV_X64_MSR_RESET: data = 0; break; case HV_X64_MSR_REENLIGHTENMENT_CONTROL: data = hv->hv_reenlightenment_control; break; case HV_X64_MSR_TSC_EMULATION_CONTROL: data = hv->hv_tsc_emulation_control; break; case HV_X64_MSR_TSC_EMULATION_STATUS: data = hv->hv_tsc_emulation_status; break; case HV_X64_MSR_TSC_INVARIANT_CONTROL: data = hv->hv_invtsc_control; break; case HV_X64_MSR_SYNDBG_OPTIONS: case HV_X64_MSR_SYNDBG_CONTROL ... HV_X64_MSR_SYNDBG_PENDING_BUFFER: return syndbg_get_msr(vcpu, msr, pdata, host); default: kvm_pr_unimpl_rdmsr(vcpu, msr); return 1; } *pdata = data; return 0; } static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { u64 data = 0; struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); if (unlikely(!host && !hv_check_msr_access(hv_vcpu, msr))) return 1; switch (msr) { case HV_X64_MSR_VP_INDEX: data = hv_vcpu->vp_index; break; case HV_X64_MSR_EOI: return kvm_hv_vapic_msr_read(vcpu, APIC_EOI, pdata); case HV_X64_MSR_ICR: return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata); case HV_X64_MSR_TPR: return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata); case HV_X64_MSR_VP_ASSIST_PAGE: data = hv_vcpu->hv_vapic; break; case HV_X64_MSR_VP_RUNTIME: data = current_task_runtime_100ns() + hv_vcpu->runtime_offset; break; case HV_X64_MSR_SCONTROL: case HV_X64_MSR_SVERSION: case HV_X64_MSR_SIEFP: case HV_X64_MSR_SIMP: case HV_X64_MSR_EOM: case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: return synic_get_msr(to_hv_synic(vcpu), msr, pdata, host); case HV_X64_MSR_STIMER0_CONFIG: case HV_X64_MSR_STIMER1_CONFIG: case HV_X64_MSR_STIMER2_CONFIG: case HV_X64_MSR_STIMER3_CONFIG: { int timer_index = (msr - HV_X64_MSR_STIMER0_CONFIG)/2; return stimer_get_config(to_hv_stimer(vcpu, timer_index), pdata); } case HV_X64_MSR_STIMER0_COUNT: case HV_X64_MSR_STIMER1_COUNT: case HV_X64_MSR_STIMER2_COUNT: case HV_X64_MSR_STIMER3_COUNT: { int timer_index = (msr - HV_X64_MSR_STIMER0_COUNT)/2; return stimer_get_count(to_hv_stimer(vcpu, timer_index), pdata); } case HV_X64_MSR_TSC_FREQUENCY: data = (u64)vcpu->arch.virtual_tsc_khz * 1000; break; case HV_X64_MSR_APIC_FREQUENCY: data = div64_u64(1000000000ULL, vcpu->kvm->arch.apic_bus_cycle_ns); break; default: kvm_pr_unimpl_rdmsr(vcpu, msr); return 1; } *pdata = data; return 0; } int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host) { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); if (!host && !vcpu->arch.hyperv_enabled) return 1; if (kvm_hv_vcpu_init(vcpu)) return 1; if (kvm_hv_msr_partition_wide(msr)) { int r; mutex_lock(&hv->hv_lock); r = kvm_hv_set_msr_pw(vcpu, msr, data, host); mutex_unlock(&hv->hv_lock); return r; } else return kvm_hv_set_msr(vcpu, msr, data, host); } int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host) { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); if (!host && !vcpu->arch.hyperv_enabled) return 1; if (kvm_hv_vcpu_init(vcpu)) return 1; if (kvm_hv_msr_partition_wide(msr)) { int r; mutex_lock(&hv->hv_lock); r = kvm_hv_get_msr_pw(vcpu, msr, pdata, host); mutex_unlock(&hv->hv_lock); return r; } else return kvm_hv_get_msr(vcpu, msr, pdata, host); } static void sparse_set_to_vcpu_mask(struct kvm *kvm, u64 *sparse_banks, u64 valid_bank_mask, unsigned long *vcpu_mask) { struct kvm_hv *hv = to_kvm_hv(kvm); bool has_mismatch = atomic_read(&hv->num_mismatched_vp_indexes); u64 vp_bitmap[KVM_HV_MAX_SPARSE_VCPU_SET_BITS]; struct kvm_vcpu *vcpu; int bank, sbank = 0; unsigned long i; u64 *bitmap; BUILD_BUG_ON(sizeof(vp_bitmap) > sizeof(*vcpu_mask) * BITS_TO_LONGS(KVM_MAX_VCPUS)); /* * If vp_index == vcpu_idx for all vCPUs, fill vcpu_mask directly, else * fill a temporary buffer and manually test each vCPU's VP index. */ if (likely(!has_mismatch)) bitmap = (u64 *)vcpu_mask; else bitmap = vp_bitmap; /* * Each set of 64 VPs is packed into sparse_banks, with valid_bank_mask * having a '1' for each bank that exists in sparse_banks. Sets must * be in ascending order, i.e. bank0..bankN. */ memset(bitmap, 0, sizeof(vp_bitmap)); for_each_set_bit(bank, (unsigned long *)&valid_bank_mask, KVM_HV_MAX_SPARSE_VCPU_SET_BITS) bitmap[bank] = sparse_banks[sbank++]; if (likely(!has_mismatch)) return; bitmap_zero(vcpu_mask, KVM_MAX_VCPUS); kvm_for_each_vcpu(i, vcpu, kvm) { if (test_bit(kvm_hv_get_vpindex(vcpu), (unsigned long *)vp_bitmap)) __set_bit(i, vcpu_mask); } } static bool hv_is_vp_in_sparse_set(u32 vp_id, u64 valid_bank_mask, u64 sparse_banks[]) { int valid_bit_nr = vp_id / HV_VCPUS_PER_SPARSE_BANK; unsigned long sbank; if (!test_bit(valid_bit_nr, (unsigned long *)&valid_bank_mask)) return false; /* * The index into the sparse bank is the number of preceding bits in * the valid mask. Optimize for VMs with <64 vCPUs by skipping the * fancy math if there can't possibly be preceding bits. */ if (valid_bit_nr) sbank = hweight64(valid_bank_mask & GENMASK_ULL(valid_bit_nr - 1, 0)); else sbank = 0; return test_bit(vp_id % HV_VCPUS_PER_SPARSE_BANK, (unsigned long *)&sparse_banks[sbank]); } struct kvm_hv_hcall { /* Hypercall input data */ u64 param; u64 ingpa; u64 outgpa; u16 code; u16 var_cnt; u16 rep_cnt; u16 rep_idx; bool fast; bool rep; sse128_t xmm[HV_HYPERCALL_MAX_XMM_REGISTERS]; /* * Current read offset when KVM reads hypercall input data gradually, * either offset in bytes from 'ingpa' for regular hypercalls or the * number of already consumed 'XMM halves' for 'fast' hypercalls. */ union { gpa_t data_offset; int consumed_xmm_halves; }; }; static int kvm_hv_get_hc_data(struct kvm *kvm, struct kvm_hv_hcall *hc, u16 orig_cnt, u16 cnt_cap, u64 *data) { /* * Preserve the original count when ignoring entries via a "cap", KVM * still needs to validate the guest input (though the non-XMM path * punts on the checks). */ u16 cnt = min(orig_cnt, cnt_cap); int i, j; if (hc->fast) { /* * Each XMM holds two sparse banks, but do not count halves that * have already been consumed for hypercall parameters. */ if (orig_cnt > 2 * HV_HYPERCALL_MAX_XMM_REGISTERS - hc->consumed_xmm_halves) return HV_STATUS_INVALID_HYPERCALL_INPUT; for (i = 0; i < cnt; i++) { j = i + hc->consumed_xmm_halves; if (j % 2) data[i] = sse128_hi(hc->xmm[j / 2]); else data[i] = sse128_lo(hc->xmm[j / 2]); } return 0; } return kvm_read_guest(kvm, hc->ingpa + hc->data_offset, data, cnt * sizeof(*data)); } static u64 kvm_get_sparse_vp_set(struct kvm *kvm, struct kvm_hv_hcall *hc, u64 *sparse_banks) { if (hc->var_cnt > HV_MAX_SPARSE_VCPU_BANKS) return -EINVAL; /* Cap var_cnt to ignore banks that cannot contain a legal VP index. */ return kvm_hv_get_hc_data(kvm, hc, hc->var_cnt, KVM_HV_MAX_SPARSE_VCPU_SET_BITS, sparse_banks); } static int kvm_hv_get_tlb_flush_entries(struct kvm *kvm, struct kvm_hv_hcall *hc, u64 entries[]) { return kvm_hv_get_hc_data(kvm, hc, hc->rep_cnt, hc->rep_cnt, entries); } static void hv_tlb_flush_enqueue(struct kvm_vcpu *vcpu, struct kvm_vcpu_hv_tlb_flush_fifo *tlb_flush_fifo, u64 *entries, int count) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); u64 flush_all_entry = KVM_HV_TLB_FLUSHALL_ENTRY; if (!hv_vcpu) return; spin_lock(&tlb_flush_fifo->write_lock); /* * All entries should fit on the fifo leaving one free for 'flush all' * entry in case another request comes in. In case there's not enough * space, just put 'flush all' entry there. */ if (count && entries && count < kfifo_avail(&tlb_flush_fifo->entries)) { WARN_ON(kfifo_in(&tlb_flush_fifo->entries, entries, count) != count); goto out_unlock; } /* * Note: full fifo always contains 'flush all' entry, no need to check the * return value. */ kfifo_in(&tlb_flush_fifo->entries, &flush_all_entry, 1); out_unlock: spin_unlock(&tlb_flush_fifo->write_lock); } int kvm_hv_vcpu_flush_tlb(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv_tlb_flush_fifo *tlb_flush_fifo; struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); u64 entries[KVM_HV_TLB_FLUSH_FIFO_SIZE]; int i, j, count; gva_t gva; if (!tdp_enabled || !hv_vcpu) return -EINVAL; tlb_flush_fifo = kvm_hv_get_tlb_flush_fifo(vcpu, is_guest_mode(vcpu)); count = kfifo_out(&tlb_flush_fifo->entries, entries, KVM_HV_TLB_FLUSH_FIFO_SIZE); for (i = 0; i < count; i++) { if (entries[i] == KVM_HV_TLB_FLUSHALL_ENTRY) goto out_flush_all; /* * Lower 12 bits of 'address' encode the number of additional * pages to flush. */ gva = entries[i] & PAGE_MASK; for (j = 0; j < (entries[i] & ~PAGE_MASK) + 1; j++) { if (is_noncanonical_invlpg_address(gva + j * PAGE_SIZE, vcpu)) continue; kvm_x86_call(flush_tlb_gva)(vcpu, gva + j * PAGE_SIZE); } ++vcpu->stat.tlb_flush; } return 0; out_flush_all: kfifo_reset_out(&tlb_flush_fifo->entries); /* Fall back to full flush. */ return -ENOSPC; } static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); unsigned long *vcpu_mask = hv_vcpu->vcpu_mask; u64 *sparse_banks = hv_vcpu->sparse_banks; struct kvm *kvm = vcpu->kvm; struct hv_tlb_flush_ex flush_ex; struct hv_tlb_flush flush; struct kvm_vcpu_hv_tlb_flush_fifo *tlb_flush_fifo; /* * Normally, there can be no more than 'KVM_HV_TLB_FLUSH_FIFO_SIZE' * entries on the TLB flush fifo. The last entry, however, needs to be * always left free for 'flush all' entry which gets placed when * there is not enough space to put all the requested entries. */ u64 __tlb_flush_entries[KVM_HV_TLB_FLUSH_FIFO_SIZE - 1]; u64 *tlb_flush_entries; u64 valid_bank_mask; struct kvm_vcpu *v; unsigned long i; bool all_cpus; /* * The Hyper-V TLFS doesn't allow more than HV_MAX_SPARSE_VCPU_BANKS * sparse banks. Fail the build if KVM's max allowed number of * vCPUs (>4096) exceeds this limit. */ BUILD_BUG_ON(KVM_HV_MAX_SPARSE_VCPU_SET_BITS > HV_MAX_SPARSE_VCPU_BANKS); /* * 'Slow' hypercall's first parameter is the address in guest's memory * where hypercall parameters are placed. This is either a GPA or a * nested GPA when KVM is handling the call from L2 ('direct' TLB * flush). Translate the address here so the memory can be uniformly * read with kvm_read_guest(). */ if (!hc->fast && mmu_is_nested(vcpu)) { hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0, NULL); if (unlikely(hc->ingpa == INVALID_GPA)) return HV_STATUS_INVALID_HYPERCALL_INPUT; } if (hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST || hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE) { if (hc->fast) { flush.address_space = hc->ingpa; flush.flags = hc->outgpa; flush.processor_mask = sse128_lo(hc->xmm[0]); hc->consumed_xmm_halves = 1; } else { if (unlikely(kvm_read_guest(kvm, hc->ingpa, &flush, sizeof(flush)))) return HV_STATUS_INVALID_HYPERCALL_INPUT; hc->data_offset = sizeof(flush); } trace_kvm_hv_flush_tlb(flush.processor_mask, flush.address_space, flush.flags, is_guest_mode(vcpu)); valid_bank_mask = BIT_ULL(0); sparse_banks[0] = flush.processor_mask; /* * Work around possible WS2012 bug: it sends hypercalls * with processor_mask = 0x0 and HV_FLUSH_ALL_PROCESSORS clear, * while also expecting us to flush something and crashing if * we don't. Let's treat processor_mask == 0 same as * HV_FLUSH_ALL_PROCESSORS. */ all_cpus = (flush.flags & HV_FLUSH_ALL_PROCESSORS) || flush.processor_mask == 0; } else { if (hc->fast) { flush_ex.address_space = hc->ingpa; flush_ex.flags = hc->outgpa; memcpy(&flush_ex.hv_vp_set, &hc->xmm[0], sizeof(hc->xmm[0])); hc->consumed_xmm_halves = 2; } else { if (unlikely(kvm_read_guest(kvm, hc->ingpa, &flush_ex, sizeof(flush_ex)))) return HV_STATUS_INVALID_HYPERCALL_INPUT; hc->data_offset = sizeof(flush_ex); } trace_kvm_hv_flush_tlb_ex(flush_ex.hv_vp_set.valid_bank_mask, flush_ex.hv_vp_set.format, flush_ex.address_space, flush_ex.flags, is_guest_mode(vcpu)); valid_bank_mask = flush_ex.hv_vp_set.valid_bank_mask; all_cpus = flush_ex.hv_vp_set.format != HV_GENERIC_SET_SPARSE_4K; if (hc->var_cnt != hweight64(valid_bank_mask)) return HV_STATUS_INVALID_HYPERCALL_INPUT; if (!all_cpus) { if (!hc->var_cnt) goto ret_success; if (kvm_get_sparse_vp_set(kvm, hc, sparse_banks)) return HV_STATUS_INVALID_HYPERCALL_INPUT; } /* * Hyper-V TLFS doesn't explicitly forbid non-empty sparse vCPU * banks (and, thus, non-zero 'var_cnt') for the 'all vCPUs' * case (HV_GENERIC_SET_ALL). Always adjust data_offset and * consumed_xmm_halves to make sure TLB flush entries are read * from the correct offset. */ if (hc->fast) hc->consumed_xmm_halves += hc->var_cnt; else hc->data_offset += hc->var_cnt * sizeof(sparse_banks[0]); } if (hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE || hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX || hc->rep_cnt > ARRAY_SIZE(__tlb_flush_entries)) { tlb_flush_entries = NULL; } else { if (kvm_hv_get_tlb_flush_entries(kvm, hc, __tlb_flush_entries)) return HV_STATUS_INVALID_HYPERCALL_INPUT; tlb_flush_entries = __tlb_flush_entries; } /* * vcpu->arch.cr3 may not be up-to-date for running vCPUs so we can't * analyze it here, flush TLB regardless of the specified address space. */ if (all_cpus && !is_guest_mode(vcpu)) { kvm_for_each_vcpu(i, v, kvm) { tlb_flush_fifo = kvm_hv_get_tlb_flush_fifo(v, false); hv_tlb_flush_enqueue(v, tlb_flush_fifo, tlb_flush_entries, hc->rep_cnt); } kvm_make_all_cpus_request(kvm, KVM_REQ_HV_TLB_FLUSH); } else if (!is_guest_mode(vcpu)) { sparse_set_to_vcpu_mask(kvm, sparse_banks, valid_bank_mask, vcpu_mask); for_each_set_bit(i, vcpu_mask, KVM_MAX_VCPUS) { v = kvm_get_vcpu(kvm, i); if (!v) continue; tlb_flush_fifo = kvm_hv_get_tlb_flush_fifo(v, false); hv_tlb_flush_enqueue(v, tlb_flush_fifo, tlb_flush_entries, hc->rep_cnt); } kvm_make_vcpus_request_mask(kvm, KVM_REQ_HV_TLB_FLUSH, vcpu_mask); } else { struct kvm_vcpu_hv *hv_v; bitmap_zero(vcpu_mask, KVM_MAX_VCPUS); kvm_for_each_vcpu(i, v, kvm) { hv_v = to_hv_vcpu(v); /* * The following check races with nested vCPUs entering/exiting * and/or migrating between L1's vCPUs, however the only case when * KVM *must* flush the TLB is when the target L2 vCPU keeps * running on the same L1 vCPU from the moment of the request until * kvm_hv_flush_tlb() returns. TLB is fully flushed in all other * cases, e.g. when the target L2 vCPU migrates to a different L1 * vCPU or when the corresponding L1 vCPU temporary switches to a * different L2 vCPU while the request is being processed. */ if (!hv_v || hv_v->nested.vm_id != hv_vcpu->nested.vm_id) continue; if (!all_cpus && !hv_is_vp_in_sparse_set(hv_v->nested.vp_id, valid_bank_mask, sparse_banks)) continue; __set_bit(i, vcpu_mask); tlb_flush_fifo = kvm_hv_get_tlb_flush_fifo(v, true); hv_tlb_flush_enqueue(v, tlb_flush_fifo, tlb_flush_entries, hc->rep_cnt); } kvm_make_vcpus_request_mask(kvm, KVM_REQ_HV_TLB_FLUSH, vcpu_mask); } ret_success: /* We always do full TLB flush, set 'Reps completed' = 'Rep Count' */ return (u64)HV_STATUS_SUCCESS | ((u64)hc->rep_cnt << HV_HYPERCALL_REP_COMP_OFFSET); } static void kvm_hv_send_ipi_to_many(struct kvm *kvm, u32 vector, u64 *sparse_banks, u64 valid_bank_mask) { struct kvm_lapic_irq irq = { .delivery_mode = APIC_DM_FIXED, .vector = vector }; struct kvm_vcpu *vcpu; unsigned long i; kvm_for_each_vcpu(i, vcpu, kvm) { if (sparse_banks && !hv_is_vp_in_sparse_set(kvm_hv_get_vpindex(vcpu), valid_bank_mask, sparse_banks)) continue; /* We fail only when APIC is disabled */ kvm_apic_set_irq(vcpu, &irq, NULL); } } static u64 kvm_hv_send_ipi(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); u64 *sparse_banks = hv_vcpu->sparse_banks; struct kvm *kvm = vcpu->kvm; struct hv_send_ipi_ex send_ipi_ex; struct hv_send_ipi send_ipi; u64 valid_bank_mask; u32 vector; bool all_cpus; if (!lapic_in_kernel(vcpu)) return HV_STATUS_INVALID_HYPERCALL_INPUT; if (hc->code == HVCALL_SEND_IPI) { if (!hc->fast) { if (unlikely(kvm_read_guest(kvm, hc->ingpa, &send_ipi, sizeof(send_ipi)))) return HV_STATUS_INVALID_HYPERCALL_INPUT; sparse_banks[0] = send_ipi.cpu_mask; vector = send_ipi.vector; } else { /* 'reserved' part of hv_send_ipi should be 0 */ if (unlikely(hc->ingpa >> 32 != 0)) return HV_STATUS_INVALID_HYPERCALL_INPUT; sparse_banks[0] = hc->outgpa; vector = (u32)hc->ingpa; } all_cpus = false; valid_bank_mask = BIT_ULL(0); trace_kvm_hv_send_ipi(vector, sparse_banks[0]); } else { if (!hc->fast) { if (unlikely(kvm_read_guest(kvm, hc->ingpa, &send_ipi_ex, sizeof(send_ipi_ex)))) return HV_STATUS_INVALID_HYPERCALL_INPUT; } else { send_ipi_ex.vector = (u32)hc->ingpa; send_ipi_ex.vp_set.format = hc->outgpa; send_ipi_ex.vp_set.valid_bank_mask = sse128_lo(hc->xmm[0]); } trace_kvm_hv_send_ipi_ex(send_ipi_ex.vector, send_ipi_ex.vp_set.format, send_ipi_ex.vp_set.valid_bank_mask); vector = send_ipi_ex.vector; valid_bank_mask = send_ipi_ex.vp_set.valid_bank_mask; all_cpus = send_ipi_ex.vp_set.format == HV_GENERIC_SET_ALL; if (hc->var_cnt != hweight64(valid_bank_mask)) return HV_STATUS_INVALID_HYPERCALL_INPUT; if (all_cpus) goto check_and_send_ipi; if (!hc->var_cnt) goto ret_success; if (!hc->fast) hc->data_offset = offsetof(struct hv_send_ipi_ex, vp_set.bank_contents); else hc->consumed_xmm_halves = 1; if (kvm_get_sparse_vp_set(kvm, hc, sparse_banks)) return HV_STATUS_INVALID_HYPERCALL_INPUT; } check_and_send_ipi: if ((vector < HV_IPI_LOW_VECTOR) || (vector > HV_IPI_HIGH_VECTOR)) return HV_STATUS_INVALID_HYPERCALL_INPUT; if (all_cpus) kvm_hv_send_ipi_to_many(kvm, vector, NULL, 0); else kvm_hv_send_ipi_to_many(kvm, vector, sparse_banks, valid_bank_mask); ret_success: return HV_STATUS_SUCCESS; } void kvm_hv_set_cpuid(struct kvm_vcpu *vcpu, bool hyperv_enabled) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); struct kvm_cpuid_entry2 *entry; vcpu->arch.hyperv_enabled = hyperv_enabled; if (!hv_vcpu) { /* * KVM should have already allocated kvm_vcpu_hv if Hyper-V is * enabled in CPUID. */ WARN_ON_ONCE(vcpu->arch.hyperv_enabled); return; } memset(&hv_vcpu->cpuid_cache, 0, sizeof(hv_vcpu->cpuid_cache)); if (!vcpu->arch.hyperv_enabled) return; entry = kvm_find_cpuid_entry(vcpu, HYPERV_CPUID_FEATURES); if (entry) { hv_vcpu->cpuid_cache.features_eax = entry->eax; hv_vcpu->cpuid_cache.features_ebx = entry->ebx; hv_vcpu->cpuid_cache.features_edx = entry->edx; } entry = kvm_find_cpuid_entry(vcpu, HYPERV_CPUID_ENLIGHTMENT_INFO); if (entry) { hv_vcpu->cpuid_cache.enlightenments_eax = entry->eax; hv_vcpu->cpuid_cache.enlightenments_ebx = entry->ebx; } entry = kvm_find_cpuid_entry(vcpu, HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES); if (entry) hv_vcpu->cpuid_cache.syndbg_cap_eax = entry->eax; entry = kvm_find_cpuid_entry(vcpu, HYPERV_CPUID_NESTED_FEATURES); if (entry) { hv_vcpu->cpuid_cache.nested_eax = entry->eax; hv_vcpu->cpuid_cache.nested_ebx = entry->ebx; } } int kvm_hv_set_enforce_cpuid(struct kvm_vcpu *vcpu, bool enforce) { struct kvm_vcpu_hv *hv_vcpu; int ret = 0; if (!to_hv_vcpu(vcpu)) { if (enforce) { ret = kvm_hv_vcpu_init(vcpu); if (ret) return ret; } else { return 0; } } hv_vcpu = to_hv_vcpu(vcpu); hv_vcpu->enforce_cpuid = enforce; return ret; } static void kvm_hv_hypercall_set_result(struct kvm_vcpu *vcpu, u64 result) { bool longmode; longmode = is_64_bit_hypercall(vcpu); if (longmode) kvm_rax_write(vcpu, result); else { kvm_rdx_write(vcpu, result >> 32); kvm_rax_write(vcpu, result & 0xffffffff); } } static int kvm_hv_hypercall_complete(struct kvm_vcpu *vcpu, u64 result) { u32 tlb_lock_count = 0; int ret; if (hv_result_success(result) && is_guest_mode(vcpu) && kvm_hv_is_tlb_flush_hcall(vcpu) && kvm_read_guest(vcpu->kvm, to_hv_vcpu(vcpu)->nested.pa_page_gpa, &tlb_lock_count, sizeof(tlb_lock_count))) result = HV_STATUS_INVALID_HYPERCALL_INPUT; trace_kvm_hv_hypercall_done(result); kvm_hv_hypercall_set_result(vcpu, result); ++vcpu->stat.hypercalls; ret = kvm_skip_emulated_instruction(vcpu); if (tlb_lock_count) kvm_x86_ops.nested_ops->hv_inject_synthetic_vmexit_post_tlb_flush(vcpu); return ret; } static int kvm_hv_hypercall_complete_userspace(struct kvm_vcpu *vcpu) { return kvm_hv_hypercall_complete(vcpu, vcpu->run->hyperv.u.hcall.result); } static u16 kvm_hvcall_signal_event(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) { struct kvm_hv *hv = to_kvm_hv(vcpu->kvm); struct eventfd_ctx *eventfd; if (unlikely(!hc->fast)) { int ret; gpa_t gpa = hc->ingpa; if ((gpa & (__alignof__(hc->ingpa) - 1)) || offset_in_page(gpa) + sizeof(hc->ingpa) > PAGE_SIZE) return HV_STATUS_INVALID_ALIGNMENT; ret = kvm_vcpu_read_guest(vcpu, gpa, &hc->ingpa, sizeof(hc->ingpa)); if (ret < 0) return HV_STATUS_INVALID_ALIGNMENT; } /* * Per spec, bits 32-47 contain the extra "flag number". However, we * have no use for it, and in all known usecases it is zero, so just * report lookup failure if it isn't. */ if (hc->ingpa & 0xffff00000000ULL) return HV_STATUS_INVALID_PORT_ID; /* remaining bits are reserved-zero */ if (hc->ingpa & ~KVM_HYPERV_CONN_ID_MASK) return HV_STATUS_INVALID_HYPERCALL_INPUT; /* the eventfd is protected by vcpu->kvm->srcu, but conn_to_evt isn't */ rcu_read_lock(); eventfd = idr_find(&hv->conn_to_evt, hc->ingpa); rcu_read_unlock(); if (!eventfd) return HV_STATUS_INVALID_PORT_ID; eventfd_signal(eventfd); return HV_STATUS_SUCCESS; } static bool is_xmm_fast_hypercall(struct kvm_hv_hcall *hc) { switch (hc->code) { case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: case HVCALL_SEND_IPI_EX: return true; } return false; } static void kvm_hv_hypercall_read_xmm(struct kvm_hv_hcall *hc) { int reg; kvm_fpu_get(); for (reg = 0; reg < HV_HYPERCALL_MAX_XMM_REGISTERS; reg++) _kvm_read_sse_reg(reg, &hc->xmm[reg]); kvm_fpu_put(); } static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) { if (!hv_vcpu->enforce_cpuid) return true; switch (code) { case HVCALL_NOTIFY_LONG_SPIN_WAIT: return hv_vcpu->cpuid_cache.enlightenments_ebx && hv_vcpu->cpuid_cache.enlightenments_ebx != U32_MAX; case HVCALL_POST_MESSAGE: return hv_vcpu->cpuid_cache.features_ebx & HV_POST_MESSAGES; case HVCALL_SIGNAL_EVENT: return hv_vcpu->cpuid_cache.features_ebx & HV_SIGNAL_EVENTS; case HVCALL_POST_DEBUG_DATA: case HVCALL_RETRIEVE_DEBUG_DATA: case HVCALL_RESET_DEBUG_SESSION: /* * Return 'true' when SynDBG is disabled so the resulting code * will be HV_STATUS_INVALID_HYPERCALL_CODE. */ return !kvm_hv_is_syndbg_enabled(hv_vcpu->vcpu) || hv_vcpu->cpuid_cache.features_ebx & HV_DEBUGGING; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: if (!(hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) return false; fallthrough; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; case HVCALL_SEND_IPI_EX: if (!(hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) return false; fallthrough; case HVCALL_SEND_IPI: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_CLUSTER_IPI_RECOMMENDED; case HV_EXT_CALL_QUERY_CAPABILITIES ... HV_EXT_CALL_MAX: return hv_vcpu->cpuid_cache.features_ebx & HV_ENABLE_EXTENDED_HYPERCALLS; default: break; } return true; } int kvm_hv_hypercall(struct kvm_vcpu *vcpu) { struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); struct kvm_hv_hcall hc; u64 ret = HV_STATUS_SUCCESS; /* * hypercall generates UD from non zero cpl and real mode * per HYPER-V spec */ if (kvm_x86_call(get_cpl)(vcpu) != 0 || !is_protmode(vcpu)) { kvm_queue_exception(vcpu, UD_VECTOR); return 1; } #ifdef CONFIG_X86_64 if (is_64_bit_hypercall(vcpu)) { hc.param = kvm_rcx_read(vcpu); hc.ingpa = kvm_rdx_read(vcpu); hc.outgpa = kvm_r8_read(vcpu); } else #endif { hc.param = ((u64)kvm_rdx_read(vcpu) << 32) | (kvm_rax_read(vcpu) & 0xffffffff); hc.ingpa = ((u64)kvm_rbx_read(vcpu) << 32) | (kvm_rcx_read(vcpu) & 0xffffffff); hc.outgpa = ((u64)kvm_rdi_read(vcpu) << 32) | (kvm_rsi_read(vcpu) & 0xffffffff); } hc.code = hc.param & 0xffff; hc.var_cnt = (hc.param & HV_HYPERCALL_VARHEAD_MASK) >> HV_HYPERCALL_VARHEAD_OFFSET; hc.fast = !!(hc.param & HV_HYPERCALL_FAST_BIT); hc.rep_cnt = (hc.param >> HV_HYPERCALL_REP_COMP_OFFSET) & 0xfff; hc.rep_idx = (hc.param >> HV_HYPERCALL_REP_START_OFFSET) & 0xfff; hc.rep = !!(hc.rep_cnt || hc.rep_idx); trace_kvm_hv_hypercall(hc.code, hc.fast, hc.var_cnt, hc.rep_cnt, hc.rep_idx, hc.ingpa, hc.outgpa); if (unlikely(!hv_check_hypercall_access(hv_vcpu, hc.code))) { ret = HV_STATUS_ACCESS_DENIED; goto hypercall_complete; } if (unlikely(hc.param & HV_HYPERCALL_RSVD_MASK)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; goto hypercall_complete; } if (hc.fast && is_xmm_fast_hypercall(&hc)) { if (unlikely(hv_vcpu->enforce_cpuid && !(hv_vcpu->cpuid_cache.features_edx & HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE))) { kvm_queue_exception(vcpu, UD_VECTOR); return 1; } kvm_hv_hypercall_read_xmm(&hc); } switch (hc.code) { case HVCALL_NOTIFY_LONG_SPIN_WAIT: if (unlikely(hc.rep || hc.var_cnt)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } kvm_vcpu_on_spin(vcpu, true); break; case HVCALL_SIGNAL_EVENT: if (unlikely(hc.rep || hc.var_cnt)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } ret = kvm_hvcall_signal_event(vcpu, &hc); if (ret != HV_STATUS_INVALID_PORT_ID) break; fallthrough; /* maybe userspace knows this conn_id */ case HVCALL_POST_MESSAGE: /* don't bother userspace if it has no way to handle it */ if (unlikely(hc.rep || hc.var_cnt || !to_hv_synic(vcpu)->active)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } goto hypercall_userspace_exit; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: if (unlikely(hc.var_cnt)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } fallthrough; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: if (unlikely(!hc.rep_cnt || hc.rep_idx)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } ret = kvm_hv_flush_tlb(vcpu, &hc); break; case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: if (unlikely(hc.var_cnt)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } fallthrough; case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: if (unlikely(hc.rep)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } ret = kvm_hv_flush_tlb(vcpu, &hc); break; case HVCALL_SEND_IPI: if (unlikely(hc.var_cnt)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } fallthrough; case HVCALL_SEND_IPI_EX: if (unlikely(hc.rep)) { ret = HV_STATUS_INVALID_HYPERCALL_INPUT; break; } ret = kvm_hv_send_ipi(vcpu, &hc); break; case HVCALL_POST_DEBUG_DATA: case HVCALL_RETRIEVE_DEBUG_DATA: if (unlikely(hc.fast)) { ret = HV_STATUS_INVALID_PARAMETER; break; } fallthrough; case HVCALL_RESET_DEBUG_SESSION: { struct kvm_hv_syndbg *syndbg = to_hv_syndbg(vcpu); if (!kvm_hv_is_syndbg_enabled(vcpu)) { ret = HV_STATUS_INVALID_HYPERCALL_CODE; break; } if (!(syndbg->options & HV_X64_SYNDBG_OPTION_USE_HCALLS)) { ret = HV_STATUS_OPERATION_DENIED; break; } goto hypercall_userspace_exit; } case HV_EXT_CALL_QUERY_CAPABILITIES ... HV_EXT_CALL_MAX: if (unlikely(hc.fast)) { ret = HV_STATUS_INVALID_PARAMETER; break; } goto hypercall_userspace_exit; default: ret = HV_STATUS_INVALID_HYPERCALL_CODE; break; } hypercall_complete: return kvm_hv_hypercall_complete(vcpu, ret); hypercall_userspace_exit: vcpu->run->exit_reason = KVM_EXIT_HYPERV; vcpu->run->hyperv.type = KVM_EXIT_HYPERV_HCALL; vcpu->run->hyperv.u.hcall.input = hc.param; vcpu->run->hyperv.u.hcall.params[0] = hc.ingpa; vcpu->run->hyperv.u.hcall.params[1] = hc.outgpa; vcpu->arch.complete_userspace_io = kvm_hv_hypercall_complete_userspace; return 0; } void kvm_hv_init_vm(struct kvm *kvm) { struct kvm_hv *hv = to_kvm_hv(kvm); mutex_init(&hv->hv_lock); idr_init(&hv->conn_to_evt); } void kvm_hv_destroy_vm(struct kvm *kvm) { struct kvm_hv *hv = to_kvm_hv(kvm); struct eventfd_ctx *eventfd; int i; idr_for_each_entry(&hv->conn_to_evt, eventfd, i) eventfd_ctx_put(eventfd); idr_destroy(&hv->conn_to_evt); } static int kvm_hv_eventfd_assign(struct kvm *kvm, u32 conn_id, int fd) { struct kvm_hv *hv = to_kvm_hv(kvm); struct eventfd_ctx *eventfd; int ret; eventfd = eventfd_ctx_fdget(fd); if (IS_ERR(eventfd)) return PTR_ERR(eventfd); mutex_lock(&hv->hv_lock); ret = idr_alloc(&hv->conn_to_evt, eventfd, conn_id, conn_id + 1, GFP_KERNEL_ACCOUNT); mutex_unlock(&hv->hv_lock); if (ret >= 0) return 0; if (ret == -ENOSPC) ret = -EEXIST; eventfd_ctx_put(eventfd); return ret; } static int kvm_hv_eventfd_deassign(struct kvm *kvm, u32 conn_id) { struct kvm_hv *hv = to_kvm_hv(kvm); struct eventfd_ctx *eventfd; mutex_lock(&hv->hv_lock); eventfd = idr_remove(&hv->conn_to_evt, conn_id); mutex_unlock(&hv->hv_lock); if (!eventfd) return -ENOENT; synchronize_srcu(&kvm->srcu); eventfd_ctx_put(eventfd); return 0; } int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args) { if ((args->flags & ~KVM_HYPERV_EVENTFD_DEASSIGN) || (args->conn_id & ~KVM_HYPERV_CONN_ID_MASK)) return -EINVAL; if (args->flags == KVM_HYPERV_EVENTFD_DEASSIGN) return kvm_hv_eventfd_deassign(kvm, args->conn_id); return kvm_hv_eventfd_assign(kvm, args->conn_id, args->fd); } int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 __user *entries) { uint16_t evmcs_ver = 0; struct kvm_cpuid_entry2 cpuid_entries[] = { { .function = HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS }, { .function = HYPERV_CPUID_INTERFACE }, { .function = HYPERV_CPUID_VERSION }, { .function = HYPERV_CPUID_FEATURES }, { .function = HYPERV_CPUID_ENLIGHTMENT_INFO }, { .function = HYPERV_CPUID_IMPLEMENT_LIMITS }, { .function = HYPERV_CPUID_SYNDBG_VENDOR_AND_MAX_FUNCTIONS }, { .function = HYPERV_CPUID_SYNDBG_INTERFACE }, { .function = HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES }, { .function = HYPERV_CPUID_NESTED_FEATURES }, }; int i, nent = ARRAY_SIZE(cpuid_entries); if (kvm_x86_ops.nested_ops->get_evmcs_version) evmcs_ver = kvm_x86_ops.nested_ops->get_evmcs_version(vcpu); if (cpuid->nent < nent) return -E2BIG; if (cpuid->nent > nent) cpuid->nent = nent; for (i = 0; i < nent; i++) { struct kvm_cpuid_entry2 *ent = &cpuid_entries[i]; u32 signature[3]; switch (ent->function) { case HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS: memcpy(signature, "Linux KVM Hv", 12); ent->eax = HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES; ent->ebx = signature[0]; ent->ecx = signature[1]; ent->edx = signature[2]; break; case HYPERV_CPUID_INTERFACE: ent->eax = HYPERV_CPUID_SIGNATURE_EAX; break; case HYPERV_CPUID_VERSION: /* * We implement some Hyper-V 2016 functions so let's use * this version. */ ent->eax = 0x00003839; ent->ebx = 0x000A0000; break; case HYPERV_CPUID_FEATURES: ent->eax |= HV_MSR_VP_RUNTIME_AVAILABLE; ent->eax |= HV_MSR_TIME_REF_COUNT_AVAILABLE; ent->eax |= HV_MSR_SYNIC_AVAILABLE; ent->eax |= HV_MSR_SYNTIMER_AVAILABLE; ent->eax |= HV_MSR_APIC_ACCESS_AVAILABLE; ent->eax |= HV_MSR_HYPERCALL_AVAILABLE; ent->eax |= HV_MSR_VP_INDEX_AVAILABLE; ent->eax |= HV_MSR_RESET_AVAILABLE; ent->eax |= HV_MSR_REFERENCE_TSC_AVAILABLE; ent->eax |= HV_ACCESS_FREQUENCY_MSRS; ent->eax |= HV_ACCESS_REENLIGHTENMENT; ent->eax |= HV_ACCESS_TSC_INVARIANT; ent->ebx |= HV_POST_MESSAGES; ent->ebx |= HV_SIGNAL_EVENTS; ent->ebx |= HV_ENABLE_EXTENDED_HYPERCALLS; ent->edx |= HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE; ent->edx |= HV_FEATURE_FREQUENCY_MSRS_AVAILABLE; ent->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; ent->ebx |= HV_DEBUGGING; ent->edx |= HV_X64_GUEST_DEBUGGING_AVAILABLE; ent->edx |= HV_FEATURE_DEBUG_MSRS_AVAILABLE; ent->edx |= HV_FEATURE_EXT_GVA_RANGES_FLUSH; /* * Direct Synthetic timers only make sense with in-kernel * LAPIC */ if (!vcpu || lapic_in_kernel(vcpu)) ent->edx |= HV_STIMER_DIRECT_MODE_AVAILABLE; break; case HYPERV_CPUID_ENLIGHTMENT_INFO: ent->eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; ent->eax |= HV_X64_APIC_ACCESS_RECOMMENDED; ent->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED; if (!vcpu || lapic_in_kernel(vcpu)) ent->eax |= HV_X64_CLUSTER_IPI_RECOMMENDED; ent->eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED; if (evmcs_ver) ent->eax |= HV_X64_ENLIGHTENED_VMCS_RECOMMENDED; if (!cpu_smt_possible()) ent->eax |= HV_X64_NO_NONARCH_CORESHARING; ent->eax |= HV_DEPRECATING_AEOI_RECOMMENDED; /* * Default number of spinlock retry attempts, matches * HyperV 2016. */ ent->ebx = 0x00000FFF; break; case HYPERV_CPUID_IMPLEMENT_LIMITS: /* Maximum number of virtual processors */ ent->eax = KVM_MAX_VCPUS; /* * Maximum number of logical processors, matches * HyperV 2016. */ ent->ebx = 64; break; case HYPERV_CPUID_NESTED_FEATURES: ent->eax = evmcs_ver; ent->eax |= HV_X64_NESTED_DIRECT_FLUSH; ent->eax |= HV_X64_NESTED_MSR_BITMAP; ent->ebx |= HV_X64_NESTED_EVMCS1_PERF_GLOBAL_CTRL; break; case HYPERV_CPUID_SYNDBG_VENDOR_AND_MAX_FUNCTIONS: memcpy(signature, "Linux KVM Hv", 12); ent->eax = 0; ent->ebx = signature[0]; ent->ecx = signature[1]; ent->edx = signature[2]; break; case HYPERV_CPUID_SYNDBG_INTERFACE: memcpy(signature, "VS#1\0\0\0\0\0\0\0\0", 12); ent->eax = signature[0]; break; case HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES: ent->eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING; break; default: break; } } if (copy_to_user(entries, cpuid_entries, nent * sizeof(struct kvm_cpuid_entry2))) return -EFAULT; return 0; } |
| 2 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 | /* * Davicom DM96xx USB 10/100Mbps ethernet devices * * Peter Korsgaard <jacmet@sunsite.dk> * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. */ //#define DEBUG #include <linux/module.h> #include <linux/sched.h> #include <linux/stddef.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/crc32.h> #include <linux/usb/usbnet.h> #include <linux/slab.h> /* datasheet: http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf */ /* control requests */ #define DM_READ_REGS 0x00 #define DM_WRITE_REGS 0x01 #define DM_READ_MEMS 0x02 #define DM_WRITE_REG 0x03 #define DM_WRITE_MEMS 0x05 #define DM_WRITE_MEM 0x07 /* registers */ #define DM_NET_CTRL 0x00 #define DM_RX_CTRL 0x05 #define DM_SHARED_CTRL 0x0b #define DM_SHARED_ADDR 0x0c #define DM_SHARED_DATA 0x0d /* low + high */ #define DM_PHY_ADDR 0x10 /* 6 bytes */ #define DM_MCAST_ADDR 0x16 /* 8 bytes */ #define DM_GPR_CTRL 0x1e #define DM_GPR_DATA 0x1f #define DM_CHIP_ID 0x2c #define DM_MODE_CTRL 0x91 /* only on dm9620 */ /* chip id values */ #define ID_DM9601 0 #define ID_DM9620 1 #define DM_MAX_MCAST 64 #define DM_MCAST_SIZE 8 #define DM_EEPROM_LEN 256 #define DM_TX_OVERHEAD 2 /* 2 byte header */ #define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */ #define DM_TIMEOUT 1000 static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data) { int err; err = usbnet_read_cmd(dev, DM_READ_REGS, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, reg, data, length); if(err != length && err >= 0) err = -EINVAL; return err; } static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value) { return dm_read(dev, reg, 1, value); } static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data) { int err; err = usbnet_write_cmd(dev, DM_WRITE_REGS, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, reg, data, length); if (err >= 0 && err < length) err = -EINVAL; return err; } static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value) { return usbnet_write_cmd(dev, DM_WRITE_REG, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, reg, NULL, 0); } static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, const void *data) { usbnet_write_cmd_async(dev, DM_WRITE_REGS, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, reg, data, length); } static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value) { usbnet_write_cmd_async(dev, DM_WRITE_REG, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, reg, NULL, 0); } static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value) { int ret, i; mutex_lock(&dev->phy_mutex); dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4); for (i = 0; i < DM_TIMEOUT; i++) { u8 tmp = 0; udelay(1); ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); if (ret < 0) goto out; /* ready */ if ((tmp & 1) == 0) break; } if (i == DM_TIMEOUT) { netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom"); ret = -EIO; goto out; } dm_write_reg(dev, DM_SHARED_CTRL, 0x0); ret = dm_read(dev, DM_SHARED_DATA, 2, value); netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n", phy, reg, *value, ret); out: mutex_unlock(&dev->phy_mutex); return ret; } static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value) { int ret, i; mutex_lock(&dev->phy_mutex); ret = dm_write(dev, DM_SHARED_DATA, 2, &value); if (ret < 0) goto out; dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12); for (i = 0; i < DM_TIMEOUT; i++) { u8 tmp = 0; udelay(1); ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); if (ret < 0) goto out; /* ready */ if ((tmp & 1) == 0) break; } if (i == DM_TIMEOUT) { netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom"); ret = -EIO; goto out; } dm_write_reg(dev, DM_SHARED_CTRL, 0x0); out: mutex_unlock(&dev->phy_mutex); return ret; } static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value) { return dm_read_shared_word(dev, 0, offset, value); } static int dm9601_get_eeprom_len(struct net_device *dev) { return DM_EEPROM_LEN; } static int dm9601_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, u8 * data) { struct usbnet *dev = netdev_priv(net); __le16 *ebuf = (__le16 *) data; int i; /* access is 16bit */ if ((eeprom->offset % 2) || (eeprom->len % 2)) return -EINVAL; for (i = 0; i < eeprom->len / 2; i++) { if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i, &ebuf[i]) < 0) return -EINVAL; } return 0; } static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc) { struct usbnet *dev = netdev_priv(netdev); __le16 res; int err; if (phy_id) { netdev_dbg(dev->net, "Only internal phy supported\n"); return 0; } err = dm_read_shared_word(dev, 1, loc, &res); if (err < 0) { netdev_err(dev->net, "MDIO read error: %d\n", err); return 0; } netdev_dbg(dev->net, "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", phy_id, loc, le16_to_cpu(res)); return le16_to_cpu(res); } static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc, int val) { struct usbnet *dev = netdev_priv(netdev); __le16 res = cpu_to_le16(val); if (phy_id) { netdev_dbg(dev->net, "Only internal phy supported\n"); return; } netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", phy_id, loc, val); dm_write_shared_word(dev, 1, loc, res); } static const struct ethtool_ops dm9601_ethtool_ops = { .get_drvinfo = usbnet_get_drvinfo, .get_link = usbnet_get_link, .get_msglevel = usbnet_get_msglevel, .set_msglevel = usbnet_set_msglevel, .get_eeprom_len = dm9601_get_eeprom_len, .get_eeprom = dm9601_get_eeprom, .nway_reset = usbnet_nway_reset, .get_link_ksettings = usbnet_get_link_ksettings_mii, .set_link_ksettings = usbnet_set_link_ksettings_mii, }; static void dm9601_set_multicast(struct net_device *net) { struct usbnet *dev = netdev_priv(net); /* We use the 20 byte dev->data for our 8 byte filter buffer * to avoid allocating memory that is tricky to free later */ u8 *hashes = (u8 *) & dev->data; u8 rx_ctl = 0x31; memset(hashes, 0x00, DM_MCAST_SIZE); hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */ if (net->flags & IFF_PROMISC) { rx_ctl |= 0x02; } else if (net->flags & IFF_ALLMULTI || netdev_mc_count(net) > DM_MAX_MCAST) { rx_ctl |= 0x08; } else if (!netdev_mc_empty(net)) { struct netdev_hw_addr *ha; netdev_for_each_mc_addr(ha, net) { u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26; hashes[crc >> 3] |= 1 << (crc & 0x7); } } dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes); dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl); } static void __dm9601_set_mac_address(struct usbnet *dev) { dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr); } static int dm9601_set_mac_address(struct net_device *net, void *p) { struct sockaddr *addr = p; struct usbnet *dev = netdev_priv(net); if (!is_valid_ether_addr(addr->sa_data)) { dev_err(&net->dev, "not setting invalid mac address %pM\n", addr->sa_data); return -EINVAL; } eth_hw_addr_set(net, addr->sa_data); __dm9601_set_mac_address(dev); return 0; } static const struct net_device_ops dm9601_netdev_ops = { .ndo_open = usbnet_open, .ndo_stop = usbnet_stop, .ndo_start_xmit = usbnet_start_xmit, .ndo_tx_timeout = usbnet_tx_timeout, .ndo_change_mtu = usbnet_change_mtu, .ndo_get_stats64 = dev_get_tstats64, .ndo_validate_addr = eth_validate_addr, .ndo_eth_ioctl = usbnet_mii_ioctl, .ndo_set_rx_mode = dm9601_set_multicast, .ndo_set_mac_address = dm9601_set_mac_address, }; static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf) { int ret; u8 mac[ETH_ALEN], id; ret = usbnet_get_endpoints(dev, intf); if (ret) goto out; dev->net->netdev_ops = &dm9601_netdev_ops; dev->net->ethtool_ops = &dm9601_ethtool_ops; dev->net->hard_header_len += DM_TX_OVERHEAD; dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; /* dm9620/21a require room for 4 byte padding, even in dm9601 * mode, so we need +1 to be able to receive full size * ethernet frames. */ dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1; dev->mii.dev = dev->net; dev->mii.mdio_read = dm9601_mdio_read; dev->mii.mdio_write = dm9601_mdio_write; dev->mii.phy_id_mask = 0x1f; dev->mii.reg_num_mask = 0x1f; /* reset */ dm_write_reg(dev, DM_NET_CTRL, 1); udelay(20); /* read MAC */ if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) { printk(KERN_ERR "Error reading MAC address\n"); ret = -ENODEV; goto out; } /* * Overwrite the auto-generated address only with good ones. */ if (is_valid_ether_addr(mac)) eth_hw_addr_set(dev->net, mac); else { printk(KERN_WARNING "dm9601: No valid MAC address in EEPROM, using %pM\n", dev->net->dev_addr); __dm9601_set_mac_address(dev); } if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) { netdev_err(dev->net, "Error reading chip ID\n"); ret = -ENODEV; goto out; } /* put dm9620 devices in dm9601 mode */ if (id == ID_DM9620) { u8 mode; if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) { netdev_err(dev->net, "Error reading MODE_CTRL\n"); ret = -ENODEV; goto out; } dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f); } /* power up phy */ dm_write_reg(dev, DM_GPR_CTRL, 1); dm_write_reg(dev, DM_GPR_DATA, 0); /* receive broadcast packets */ dm9601_set_multicast(dev->net); dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); mii_nway_restart(&dev->mii); out: return ret; } static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { u8 status; int len; /* format: b1: rx status b2: packet length (incl crc) low b3: packet length (incl crc) high b4..n-4: packet data bn-3..bn: ethernet crc */ if (unlikely(skb->len < DM_RX_OVERHEAD)) { dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); return 0; } status = skb->data[0]; len = (skb->data[1] | (skb->data[2] << 8)) - 4; if (unlikely(status & 0xbf)) { if (status & 0x01) dev->net->stats.rx_fifo_errors++; if (status & 0x02) dev->net->stats.rx_crc_errors++; if (status & 0x04) dev->net->stats.rx_frame_errors++; if (status & 0x20) dev->net->stats.rx_missed_errors++; if (status & 0x90) dev->net->stats.rx_length_errors++; return 0; } skb_pull(skb, 3); skb_trim(skb, len); return 1; } static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { int len, pad; /* format: b1: packet length low b2: packet length high b3..n: packet data */ len = skb->len + DM_TX_OVERHEAD; /* workaround for dm962x errata with tx fifo getting out of * sync if a USB bulk transfer retry happens right after a * packet with odd / maxpacket length by adding up to 3 bytes * padding. */ while ((len & 1) || !(len % dev->maxpacket)) len++; len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */ pad = len - skb->len; if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) { struct sk_buff *skb2; skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags); dev_kfree_skb_any(skb); skb = skb2; if (!skb) return NULL; } __skb_push(skb, DM_TX_OVERHEAD); if (pad) { memset(skb->data + skb->len, 0, pad); __skb_put(skb, pad); } skb->data[0] = len; skb->data[1] = len >> 8; return skb; } static void dm9601_status(struct usbnet *dev, struct urb *urb) { int link; u8 *buf; /* format: b0: net status b1: tx status 1 b2: tx status 2 b3: rx status b4: rx overflow b5: rx count b6: tx count b7: gpr */ if (urb->actual_length < 8) return; buf = urb->transfer_buffer; link = !!(buf[0] & 0x40); if (netif_carrier_ok(dev->net) != link) { usbnet_link_change(dev, link, 1); netdev_dbg(dev->net, "Link Status is: %d\n", link); } } static int dm9601_link_reset(struct usbnet *dev) { struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; mii_check_media(&dev->mii, 1, 1); mii_ethtool_gset(&dev->mii, &ecmd); netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n", ethtool_cmd_speed(&ecmd), ecmd.duplex); return 0; } static const struct driver_info dm9601_info = { .description = "Davicom DM96xx USB 10/100 Ethernet", .flags = FLAG_ETHER | FLAG_LINK_INTR, .bind = dm9601_bind, .rx_fixup = dm9601_rx_fixup, .tx_fixup = dm9601_tx_fixup, .status = dm9601_status, .link_reset = dm9601_link_reset, .reset = dm9601_link_reset, }; static const struct usb_device_id products[] = { { USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x9000), /* DM9000E */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x9621), /* DM9621A USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x9622), /* DM9622 USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x0269), /* DM962OA USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0a46, 0x1269), /* DM9621A USB to Fast Ethernet Adapter */ .driver_info = (unsigned long)&dm9601_info, }, { USB_DEVICE(0x0586, 0x3427), /* ZyXEL Keenetic Plus DSL xDSL modem */ .driver_info = (unsigned long)&dm9601_info, }, {}, // END }; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver dm9601_driver = { .name = "dm9601", .id_table = products, .probe = usbnet_probe, .disconnect = usbnet_disconnect, .suspend = usbnet_suspend, .resume = usbnet_resume, .disable_hub_initiated_lpm = 1, }; module_usb_driver(dm9601_driver); MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>"); MODULE_DESCRIPTION("Davicom DM96xx USB 10/100 ethernet devices"); MODULE_LICENSE("GPL"); |
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1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 | // SPDX-License-Identifier: GPL-2.0-or-later /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * IPv4 Forwarding Information Base: FIB frontend. * * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> */ #include <linux/module.h> #include <linux/uaccess.h> #include <linux/bitops.h> #include <linux/capability.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/string.h> #include <linux/socket.h> #include <linux/sockios.h> #include <linux/errno.h> #include <linux/in.h> #include <linux/inet.h> #include <linux/inetdevice.h> #include <linux/netdevice.h> #include <linux/if_addr.h> #include <linux/if_arp.h> #include <linux/skbuff.h> #include <linux/cache.h> #include <linux/init.h> #include <linux/list.h> #include <linux/slab.h> #include <net/flow.h> #include <net/inet_dscp.h> #include <net/ip.h> #include <net/protocol.h> #include <net/route.h> #include <net/tcp.h> #include <net/sock.h> #include <net/arp.h> #include <net/ip_fib.h> #include <net/nexthop.h> #include <net/rtnetlink.h> #include <net/xfrm.h> #include <net/l3mdev.h> #include <net/lwtunnel.h> #include <trace/events/fib.h> #ifndef CONFIG_IP_MULTIPLE_TABLES static int __net_init fib4_rules_init(struct net *net) { struct fib_table *local_table, *main_table; main_table = fib_trie_table(RT_TABLE_MAIN, NULL); if (!main_table) return -ENOMEM; local_table = fib_trie_table(RT_TABLE_LOCAL, main_table); if (!local_table) goto fail; hlist_add_head_rcu(&local_table->tb_hlist, &net->ipv4.fib_table_hash[TABLE_LOCAL_INDEX]); hlist_add_head_rcu(&main_table->tb_hlist, &net->ipv4.fib_table_hash[TABLE_MAIN_INDEX]); return 0; fail: fib_free_table(main_table); return -ENOMEM; } #else struct fib_table *fib_new_table(struct net *net, u32 id) { struct fib_table *tb, *alias = NULL; unsigned int h; if (id == 0) id = RT_TABLE_MAIN; tb = fib_get_table(net, id); if (tb) return tb; if (id == RT_TABLE_LOCAL && !net->ipv4.fib_has_custom_rules) alias = fib_new_table(net, RT_TABLE_MAIN); tb = fib_trie_table(id, alias); if (!tb) return NULL; switch (id) { case RT_TABLE_MAIN: rcu_assign_pointer(net->ipv4.fib_main, tb); break; case RT_TABLE_DEFAULT: rcu_assign_pointer(net->ipv4.fib_default, tb); break; default: break; } h = id & (FIB_TABLE_HASHSZ - 1); hlist_add_head_rcu(&tb->tb_hlist, &net->ipv4.fib_table_hash[h]); return tb; } EXPORT_SYMBOL_GPL(fib_new_table); /* caller must hold either rtnl or rcu read lock */ struct fib_table *fib_get_table(struct net *net, u32 id) { struct fib_table *tb; struct hlist_head *head; unsigned int h; if (id == 0) id = RT_TABLE_MAIN; h = id & (FIB_TABLE_HASHSZ - 1); head = &net->ipv4.fib_table_hash[h]; hlist_for_each_entry_rcu(tb, head, tb_hlist, lockdep_rtnl_is_held()) { if (tb->tb_id == id) return tb; } return NULL; } #endif /* CONFIG_IP_MULTIPLE_TABLES */ static void fib_replace_table(struct net *net, struct fib_table *old, struct fib_table *new) { #ifdef CONFIG_IP_MULTIPLE_TABLES switch (new->tb_id) { case RT_TABLE_MAIN: rcu_assign_pointer(net->ipv4.fib_main, new); break; case RT_TABLE_DEFAULT: rcu_assign_pointer(net->ipv4.fib_default, new); break; default: break; } #endif /* replace the old table in the hlist */ hlist_replace_rcu(&old->tb_hlist, &new->tb_hlist); } int fib_unmerge(struct net *net) { struct fib_table *old, *new, *main_table; /* attempt to fetch local table if it has been allocated */ old = fib_get_table(net, RT_TABLE_LOCAL); if (!old) return 0; new = fib_trie_unmerge(old); if (!new) return -ENOMEM; /* table is already unmerged */ if (new == old) return 0; /* replace merged table with clean table */ fib_replace_table(net, old, new); fib_free_table(old); /* attempt to fetch main table if it has been allocated */ main_table = fib_get_table(net, RT_TABLE_MAIN); if (!main_table) return 0; /* flush local entries from main table */ fib_table_flush_external(main_table); return 0; } void fib_flush(struct net *net) { int flushed = 0; unsigned int h; for (h = 0; h < FIB_TABLE_HASHSZ; h++) { struct hlist_head *head = &net->ipv4.fib_table_hash[h]; struct hlist_node *tmp; struct fib_table *tb; hlist_for_each_entry_safe(tb, tmp, head, tb_hlist) flushed += fib_table_flush(net, tb, false); } if (flushed) rt_cache_flush(net); } /* * Find address type as if only "dev" was present in the system. If * on_dev is NULL then all interfaces are taken into consideration. */ static inline unsigned int __inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr, u32 tb_id) { struct flowi4 fl4 = { .daddr = addr }; struct fib_result res; unsigned int ret = RTN_BROADCAST; struct fib_table *table; if (ipv4_is_zeronet(addr) || ipv4_is_lbcast(addr)) return RTN_BROADCAST; if (ipv4_is_multicast(addr)) return RTN_MULTICAST; rcu_read_lock(); table = fib_get_table(net, tb_id); if (table) { ret = RTN_UNICAST; if (!fib_table_lookup(table, &fl4, &res, FIB_LOOKUP_NOREF)) { struct fib_nh_common *nhc = fib_info_nhc(res.fi, 0); if (!dev || dev == nhc->nhc_dev) ret = res.type; } } rcu_read_unlock(); return ret; } unsigned int inet_addr_type_table(struct net *net, __be32 addr, u32 tb_id) { return __inet_dev_addr_type(net, NULL, addr, tb_id); } EXPORT_SYMBOL(inet_addr_type_table); unsigned int inet_addr_type(struct net *net, __be32 addr) { return __inet_dev_addr_type(net, NULL, addr, RT_TABLE_LOCAL); } EXPORT_SYMBOL(inet_addr_type); unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr) { u32 rt_table = l3mdev_fib_table(dev) ? : RT_TABLE_LOCAL; return __inet_dev_addr_type(net, dev, addr, rt_table); } EXPORT_SYMBOL(inet_dev_addr_type); /* inet_addr_type with dev == NULL but using the table from a dev * if one is associated */ unsigned int inet_addr_type_dev_table(struct net *net, const struct net_device *dev, __be32 addr) { u32 rt_table = l3mdev_fib_table(dev) ? : RT_TABLE_LOCAL; return __inet_dev_addr_type(net, NULL, addr, rt_table); } EXPORT_SYMBOL(inet_addr_type_dev_table); __be32 fib_compute_spec_dst(struct sk_buff *skb) { struct net_device *dev = skb->dev; struct in_device *in_dev; struct fib_result res; struct rtable *rt; struct net *net; int scope; rt = skb_rtable(skb); if ((rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST | RTCF_LOCAL)) == RTCF_LOCAL) return ip_hdr(skb)->daddr; in_dev = __in_dev_get_rcu(dev); net = dev_net(dev); scope = RT_SCOPE_UNIVERSE; if (!ipv4_is_zeronet(ip_hdr(skb)->saddr)) { bool vmark = in_dev && IN_DEV_SRC_VMARK(in_dev); struct flowi4 fl4 = { .flowi4_iif = LOOPBACK_IFINDEX, .flowi4_l3mdev = l3mdev_master_ifindex_rcu(dev), .daddr = ip_hdr(skb)->saddr, .flowi4_dscp = ip4h_dscp(ip_hdr(skb)), .flowi4_scope = scope, .flowi4_mark = vmark ? skb->mark : 0, }; if (!fib_lookup(net, &fl4, &res, 0)) return fib_result_prefsrc(net, &res); } else { scope = RT_SCOPE_LINK; } return inet_select_addr(dev, ip_hdr(skb)->saddr, scope); } bool fib_info_nh_uses_dev(struct fib_info *fi, const struct net_device *dev) { bool dev_match = false; #ifdef CONFIG_IP_ROUTE_MULTIPATH if (unlikely(fi->nh)) { dev_match = nexthop_uses_dev(fi->nh, dev); } else { int ret; for (ret = 0; ret < fib_info_num_path(fi); ret++) { const struct fib_nh_common *nhc = fib_info_nhc(fi, ret); if (nhc_l3mdev_matches_dev(nhc, dev)) { dev_match = true; break; } } } #else if (fib_info_nhc(fi, 0)->nhc_dev == dev) dev_match = true; #endif return dev_match; } EXPORT_SYMBOL_GPL(fib_info_nh_uses_dev); /* Given (packet source, input interface) and optional (dst, oif, tos): * - (main) check, that source is valid i.e. not broadcast or our local * address. * - figure out what "logical" interface this packet arrived * and calculate "specific destination" address. * - check, that packet arrived from expected physical interface. * called with rcu_read_lock() */ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst, dscp_t dscp, int oif, struct net_device *dev, int rpf, struct in_device *idev, u32 *itag) { struct net *net = dev_net(dev); enum skb_drop_reason reason; struct flow_keys flkeys; int ret, no_addr; struct fib_result res; struct flowi4 fl4; bool dev_match; fl4.flowi4_oif = 0; fl4.flowi4_l3mdev = l3mdev_master_ifindex_rcu(dev); fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX; fl4.daddr = src; fl4.saddr = dst; fl4.flowi4_dscp = dscp; fl4.flowi4_scope = RT_SCOPE_UNIVERSE; fl4.flowi4_tun_key.tun_id = 0; fl4.flowi4_flags = 0; fl4.flowi4_uid = sock_net_uid(net, NULL); fl4.flowi4_multipath_hash = 0; no_addr = idev->ifa_list == NULL; fl4.flowi4_mark = IN_DEV_SRC_VMARK(idev) ? skb->mark : 0; if (!fib4_rules_early_flow_dissect(net, skb, &fl4, &flkeys)) { fl4.flowi4_proto = 0; fl4.fl4_sport = 0; fl4.fl4_dport = 0; } else { swap(fl4.fl4_sport, fl4.fl4_dport); } if (fib_lookup(net, &fl4, &res, 0)) goto last_resort; if (res.type != RTN_UNICAST) { if (res.type != RTN_LOCAL) { reason = SKB_DROP_REASON_IP_INVALID_SOURCE; goto e_inval; } else if (!IN_DEV_ACCEPT_LOCAL(idev)) { reason = SKB_DROP_REASON_IP_LOCAL_SOURCE; goto e_inval; } } fib_combine_itag(itag, &res); dev_match = fib_info_nh_uses_dev(res.fi, dev); /* This is not common, loopback packets retain skb_dst so normally they * would not even hit this slow path. */ dev_match = dev_match || (res.type == RTN_LOCAL && dev == net->loopback_dev); if (dev_match) { ret = FIB_RES_NHC(res)->nhc_scope >= RT_SCOPE_HOST; return ret; } if (no_addr) goto last_resort; if (rpf == 1) goto e_rpf; fl4.flowi4_oif = dev->ifindex; ret = 0; if (fib_lookup(net, &fl4, &res, FIB_LOOKUP_IGNORE_LINKSTATE) == 0) { if (res.type == RTN_UNICAST) ret = FIB_RES_NHC(res)->nhc_scope >= RT_SCOPE_HOST; } return ret; last_resort: if (rpf) goto e_rpf; *itag = 0; return 0; e_inval: return -reason; e_rpf: return -SKB_DROP_REASON_IP_RPFILTER; } /* Ignore rp_filter for packets protected by IPsec. */ int fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst, dscp_t dscp, int oif, struct net_device *dev, struct in_device *idev, u32 *itag) { int r = secpath_exists(skb) ? 0 : IN_DEV_RPFILTER(idev); struct net *net = dev_net(dev); if (!r && !fib_num_tclassid_users(net) && (dev->ifindex != oif || !IN_DEV_TX_REDIRECTS(idev))) { if (IN_DEV_ACCEPT_LOCAL(idev)) goto ok; /* with custom local routes in place, checking local addresses * only will be too optimistic, with custom rules, checking * local addresses only can be too strict, e.g. due to vrf */ if (net->ipv4.fib_has_custom_local_routes || fib4_has_custom_rules(net)) goto full_check; /* Within the same container, it is regarded as a martian source, * and the same host but different containers are not. */ if (inet_lookup_ifaddr_rcu(net, src)) return -SKB_DROP_REASON_IP_LOCAL_SOURCE; ok: *itag = 0; return 0; } full_check: return __fib_validate_source(skb, src, dst, dscp, oif, dev, r, idev, itag); } static inline __be32 sk_extract_addr(struct sockaddr *addr) { return ((struct sockaddr_in *) addr)->sin_addr.s_addr; } static int put_rtax(struct nlattr *mx, int len, int type, u32 value) { struct nlattr *nla; nla = (struct nlattr *) ((char *) mx + len); nla->nla_type = type; nla->nla_len = nla_attr_size(4); *(u32 *) nla_data(nla) = value; return len + nla_total_size(4); } static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt, struct fib_config *cfg) { __be32 addr; int plen; memset(cfg, 0, sizeof(*cfg)); cfg->fc_nlinfo.nl_net = net; if (rt->rt_dst.sa_family != AF_INET) return -EAFNOSUPPORT; /* * Check mask for validity: * a) it must be contiguous. * b) destination must have all host bits clear. * c) if application forgot to set correct family (AF_INET), * reject request unless it is absolutely clear i.e. * both family and mask are zero. */ plen = 32; addr = sk_extract_addr(&rt->rt_dst); if (!(rt->rt_flags & RTF_HOST)) { __be32 mask = sk_extract_addr(&rt->rt_genmask); if (rt->rt_genmask.sa_family != AF_INET) { if (mask || rt->rt_genmask.sa_family) return -EAFNOSUPPORT; } if (bad_mask(mask, addr)) return -EINVAL; plen = inet_mask_len(mask); } cfg->fc_dst_len = plen; cfg->fc_dst = addr; if (cmd != SIOCDELRT) { cfg->fc_nlflags = NLM_F_CREATE; cfg->fc_protocol = RTPROT_BOOT; } if (rt->rt_metric) cfg->fc_priority = rt->rt_metric - 1; if (rt->rt_flags & RTF_REJECT) { cfg->fc_scope = RT_SCOPE_HOST; cfg->fc_type = RTN_UNREACHABLE; return 0; } cfg->fc_scope = RT_SCOPE_NOWHERE; cfg->fc_type = RTN_UNICAST; if (rt->rt_dev) { char *colon; struct net_device *dev; char devname[IFNAMSIZ]; if (copy_from_user(devname, rt->rt_dev, IFNAMSIZ-1)) return -EFAULT; devname[IFNAMSIZ-1] = 0; colon = strchr(devname, ':'); if (colon) *colon = 0; dev = __dev_get_by_name(net, devname); if (!dev) return -ENODEV; cfg->fc_oif = dev->ifindex; cfg->fc_table = l3mdev_fib_table(dev); if (colon) { const struct in_ifaddr *ifa; struct in_device *in_dev; in_dev = __in_dev_get_rtnl_net(dev); if (!in_dev) return -ENODEV; *colon = ':'; in_dev_for_each_ifa_rtnl_net(net, ifa, in_dev) { if (strcmp(ifa->ifa_label, devname) == 0) break; } if (!ifa) return -ENODEV; cfg->fc_prefsrc = ifa->ifa_local; } } addr = sk_extract_addr(&rt->rt_gateway); if (rt->rt_gateway.sa_family == AF_INET && addr) { unsigned int addr_type; cfg->fc_gw4 = addr; cfg->fc_gw_family = AF_INET; addr_type = inet_addr_type_table(net, addr, cfg->fc_table); if (rt->rt_flags & RTF_GATEWAY && addr_type == RTN_UNICAST) cfg->fc_scope = RT_SCOPE_UNIVERSE; } if (!cfg->fc_table) cfg->fc_table = RT_TABLE_MAIN; if (cmd == SIOCDELRT) return 0; if (rt->rt_flags & RTF_GATEWAY && !cfg->fc_gw_family) return -EINVAL; if (cfg->fc_scope == RT_SCOPE_NOWHERE) cfg->fc_scope = RT_SCOPE_LINK; if (rt->rt_flags & (RTF_MTU | RTF_WINDOW | RTF_IRTT)) { struct nlattr *mx; int len = 0; mx = kcalloc(3, nla_total_size(4), GFP_KERNEL); if (!mx) return -ENOMEM; if (rt->rt_flags & RTF_MTU) len = put_rtax(mx, len, RTAX_ADVMSS, rt->rt_mtu - 40); if (rt->rt_flags & RTF_WINDOW) len = put_rtax(mx, len, RTAX_WINDOW, rt->rt_window); if (rt->rt_flags & RTF_IRTT) len = put_rtax(mx, len, RTAX_RTT, rt->rt_irtt << 3); cfg->fc_mx = mx; cfg->fc_mx_len = len; } return 0; } /* * Handle IP routing ioctl calls. * These are used to manipulate the routing tables */ int ip_rt_ioctl(struct net *net, unsigned int cmd, struct rtentry *rt) { struct fib_config cfg; int err; switch (cmd) { case SIOCADDRT: /* Add a route */ case SIOCDELRT: /* Delete a route */ if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; rtnl_net_lock(net); err = rtentry_to_fib_config(net, cmd, rt, &cfg); if (err == 0) { struct fib_table *tb; if (cmd == SIOCDELRT) { tb = fib_get_table(net, cfg.fc_table); if (tb) err = fib_table_delete(net, tb, &cfg, NULL); else err = -ESRCH; } else { tb = fib_new_table(net, cfg.fc_table); if (tb) err = fib_table_insert(net, tb, &cfg, NULL); else err = -ENOBUFS; } /* allocated by rtentry_to_fib_config() */ kfree(cfg.fc_mx); } rtnl_net_unlock(net); return err; } return -EINVAL; } const struct nla_policy rtm_ipv4_policy[RTA_MAX + 1] = { [RTA_UNSPEC] = { .strict_start_type = RTA_DPORT + 1 }, [RTA_DST] = { .type = NLA_U32 }, [RTA_SRC] = { .type = NLA_U32 }, [RTA_IIF] = { .type = NLA_U32 }, [RTA_OIF] = { .type = NLA_U32 }, [RTA_GATEWAY] = { .type = NLA_U32 }, [RTA_PRIORITY] = { .type = NLA_U32 }, [RTA_PREFSRC] = { .type = NLA_U32 }, [RTA_METRICS] = { .type = NLA_NESTED }, [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) }, [RTA_FLOW] = { .type = NLA_U32 }, [RTA_ENCAP_TYPE] = { .type = NLA_U16 }, [RTA_ENCAP] = { .type = NLA_NESTED }, [RTA_UID] = { .type = NLA_U32 }, [RTA_MARK] = { .type = NLA_U32 }, [RTA_TABLE] = { .type = NLA_U32 }, [RTA_IP_PROTO] = { .type = NLA_U8 }, [RTA_SPORT] = { .type = NLA_U16 }, [RTA_DPORT] = { .type = NLA_U16 }, [RTA_NH_ID] = { .type = NLA_U32 }, }; int fib_gw_from_via(struct fib_config *cfg, struct nlattr *nla, struct netlink_ext_ack *extack) { struct rtvia *via; int alen; if (nla_len(nla) < offsetof(struct rtvia, rtvia_addr)) { NL_SET_ERR_MSG(extack, "Invalid attribute length for RTA_VIA"); return -EINVAL; } via = nla_data(nla); alen = nla_len(nla) - offsetof(struct rtvia, rtvia_addr); switch (via->rtvia_family) { case AF_INET: if (alen != sizeof(__be32)) { NL_SET_ERR_MSG(extack, "Invalid IPv4 address in RTA_VIA"); return -EINVAL; } cfg->fc_gw_family = AF_INET; cfg->fc_gw4 = *((__be32 *)via->rtvia_addr); break; case AF_INET6: #if IS_ENABLED(CONFIG_IPV6) if (alen != sizeof(struct in6_addr)) { NL_SET_ERR_MSG(extack, "Invalid IPv6 address in RTA_VIA"); return -EINVAL; } cfg->fc_gw_family = AF_INET6; cfg->fc_gw6 = *((struct in6_addr *)via->rtvia_addr); #else NL_SET_ERR_MSG(extack, "IPv6 support not enabled in kernel"); return -EINVAL; #endif break; default: NL_SET_ERR_MSG(extack, "Unsupported address family in RTA_VIA"); return -EINVAL; } return 0; } static int rtm_to_fib_config(struct net *net, struct sk_buff *skb, struct nlmsghdr *nlh, struct fib_config *cfg, struct netlink_ext_ack *extack) { bool has_gw = false, has_via = false; struct nlattr *attr; int err, remaining; struct rtmsg *rtm; err = nlmsg_validate_deprecated(nlh, sizeof(*rtm), RTA_MAX, rtm_ipv4_policy, extack); if (err < 0) goto errout; memset(cfg, 0, sizeof(*cfg)); rtm = nlmsg_data(nlh); if (!inet_validate_dscp(rtm->rtm_tos)) { NL_SET_ERR_MSG(extack, "Invalid dsfield (tos): ECN bits must be 0"); err = -EINVAL; goto errout; } cfg->fc_dscp = inet_dsfield_to_dscp(rtm->rtm_tos); cfg->fc_dst_len = rtm->rtm_dst_len; cfg->fc_table = rtm->rtm_table; cfg->fc_protocol = rtm->rtm_protocol; cfg->fc_scope = rtm->rtm_scope; cfg->fc_type = rtm->rtm_type; cfg->fc_flags = rtm->rtm_flags; cfg->fc_nlflags = nlh->nlmsg_flags; cfg->fc_nlinfo.portid = NETLINK_CB(skb).portid; cfg->fc_nlinfo.nlh = nlh; cfg->fc_nlinfo.nl_net = net; if (cfg->fc_type > RTN_MAX) { NL_SET_ERR_MSG(extack, "Invalid route type"); err = -EINVAL; goto errout; } nlmsg_for_each_attr(attr, nlh, sizeof(struct rtmsg), remaining) { switch (nla_type(attr)) { case RTA_DST: cfg->fc_dst = nla_get_be32(attr); break; case RTA_OIF: cfg->fc_oif = nla_get_u32(attr); break; case RTA_GATEWAY: has_gw = true; cfg->fc_gw4 = nla_get_be32(attr); if (cfg->fc_gw4) cfg->fc_gw_family = AF_INET; break; case RTA_VIA: has_via = true; err = fib_gw_from_via(cfg, attr, extack); if (err) goto errout; break; case RTA_PRIORITY: cfg->fc_priority = nla_get_u32(attr); break; case RTA_PREFSRC: cfg->fc_prefsrc = nla_get_be32(attr); break; case RTA_METRICS: cfg->fc_mx = nla_data(attr); cfg->fc_mx_len = nla_len(attr); break; case RTA_MULTIPATH: err = lwtunnel_valid_encap_type_attr(nla_data(attr), nla_len(attr), extack); if (err < 0) goto errout; cfg->fc_mp = nla_data(attr); cfg->fc_mp_len = nla_len(attr); break; case RTA_FLOW: cfg->fc_flow = nla_get_u32(attr); break; case RTA_TABLE: cfg->fc_table = nla_get_u32(attr); break; case RTA_ENCAP: cfg->fc_encap = attr; break; case RTA_ENCAP_TYPE: cfg->fc_encap_type = nla_get_u16(attr); err = lwtunnel_valid_encap_type(cfg->fc_encap_type, extack); if (err < 0) goto errout; break; case RTA_NH_ID: cfg->fc_nh_id = nla_get_u32(attr); break; } } if (cfg->fc_dst_len > 32) { NL_SET_ERR_MSG(extack, "Invalid prefix length"); err = -EINVAL; goto errout; } if (cfg->fc_dst_len < 32 && (ntohl(cfg->fc_dst) << cfg->fc_dst_len)) { NL_SET_ERR_MSG(extack, "Invalid prefix for given prefix length"); err = -EINVAL; goto errout; } if (cfg->fc_nh_id) { if (cfg->fc_oif || cfg->fc_gw_family || cfg->fc_encap || cfg->fc_mp) { NL_SET_ERR_MSG(extack, "Nexthop specification and nexthop id are mutually exclusive"); err = -EINVAL; goto errout; } } if (has_gw && has_via) { NL_SET_ERR_MSG(extack, "Nexthop configuration can not contain both GATEWAY and VIA"); err = -EINVAL; goto errout; } if (!cfg->fc_table) cfg->fc_table = RT_TABLE_MAIN; return 0; errout: return err; } static int inet_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct fib_config cfg; struct fib_table *tb; int err; err = rtm_to_fib_config(net, skb, nlh, &cfg, extack); if (err < 0) goto errout; rtnl_net_lock(net); if (cfg.fc_nh_id && !nexthop_find_by_id(net, cfg.fc_nh_id)) { NL_SET_ERR_MSG(extack, "Nexthop id does not exist"); err = -EINVAL; goto unlock; } tb = fib_get_table(net, cfg.fc_table); if (!tb) { NL_SET_ERR_MSG(extack, "FIB table does not exist"); err = -ESRCH; goto unlock; } err = fib_table_delete(net, tb, &cfg, extack); unlock: rtnl_net_unlock(net); errout: return err; } static int inet_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { struct net *net = sock_net(skb->sk); struct fib_config cfg; struct fib_table *tb; int err; err = rtm_to_fib_config(net, skb, nlh, &cfg, extack); if (err < 0) goto errout; rtnl_net_lock(net); tb = fib_new_table(net, cfg.fc_table); if (!tb) { err = -ENOBUFS; goto unlock; } err = fib_table_insert(net, tb, &cfg, extack); if (!err && cfg.fc_type == RTN_LOCAL) net->ipv4.fib_has_custom_local_routes = true; unlock: rtnl_net_unlock(net); errout: return err; } int ip_valid_fib_dump_req(struct net *net, const struct nlmsghdr *nlh, struct fib_dump_filter *filter, struct netlink_callback *cb) { struct netlink_ext_ack *extack = cb->extack; struct nlattr *tb[RTA_MAX + 1]; struct rtmsg *rtm; int err, i; if (filter->rtnl_held) ASSERT_RTNL(); rtm = nlmsg_payload(nlh, sizeof(*rtm)); if (!rtm) { NL_SET_ERR_MSG(extack, "Invalid header for FIB dump request"); return -EINVAL; } if (rtm->rtm_dst_len || rtm->rtm_src_len || rtm->rtm_tos || rtm->rtm_scope) { NL_SET_ERR_MSG(extack, "Invalid values in header for FIB dump request"); return -EINVAL; } if (rtm->rtm_flags & ~(RTM_F_CLONED | RTM_F_PREFIX)) { NL_SET_ERR_MSG(extack, "Invalid flags for FIB dump request"); return -EINVAL; } if (rtm->rtm_flags & RTM_F_CLONED) filter->dump_routes = false; else filter->dump_exceptions = false; filter->flags = rtm->rtm_flags; filter->protocol = rtm->rtm_protocol; filter->rt_type = rtm->rtm_type; filter->table_id = rtm->rtm_table; err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv4_policy, extack); if (err < 0) return err; for (i = 0; i <= RTA_MAX; ++i) { int ifindex; if (!tb[i]) continue; switch (i) { case RTA_TABLE: filter->table_id = nla_get_u32(tb[i]); break; case RTA_OIF: ifindex = nla_get_u32(tb[i]); if (filter->rtnl_held) filter->dev = __dev_get_by_index(net, ifindex); else filter->dev = dev_get_by_index_rcu(net, ifindex); if (!filter->dev) return -ENODEV; break; default: NL_SET_ERR_MSG(extack, "Unsupported attribute in dump request"); return -EINVAL; } } if (filter->flags || filter->protocol || filter->rt_type || filter->table_id || filter->dev) { filter->filter_set = 1; cb->answer_flags = NLM_F_DUMP_FILTERED; } return 0; } EXPORT_SYMBOL_GPL(ip_valid_fib_dump_req); static int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb) { struct fib_dump_filter filter = { .dump_routes = true, .dump_exceptions = true, .rtnl_held = false, }; const struct nlmsghdr *nlh = cb->nlh; struct net *net = sock_net(skb->sk); unsigned int h, s_h; unsigned int e = 0, s_e; struct fib_table *tb; struct hlist_head *head; int dumped = 0, err = 0; rcu_read_lock(); if (cb->strict_check) { err = ip_valid_fib_dump_req(net, nlh, &filter, cb); if (err < 0) goto unlock; } else if (nlmsg_len(nlh) >= sizeof(struct rtmsg)) { struct rtmsg *rtm = nlmsg_data(nlh); filter.flags = rtm->rtm_flags & (RTM_F_PREFIX | RTM_F_CLONED); } /* ipv4 does not use prefix flag */ if (filter.flags & RTM_F_PREFIX) goto unlock; if (filter.table_id) { tb = fib_get_table(net, filter.table_id); if (!tb) { if (rtnl_msg_family(cb->nlh) != PF_INET) goto unlock; NL_SET_ERR_MSG(cb->extack, "ipv4: FIB table does not exist"); err = -ENOENT; goto unlock; } err = fib_table_dump(tb, skb, cb, &filter); goto unlock; } s_h = cb->args[0]; s_e = cb->args[1]; err = 0; for (h = s_h; h < FIB_TABLE_HASHSZ; h++, s_e = 0) { e = 0; head = &net->ipv4.fib_table_hash[h]; hlist_for_each_entry_rcu(tb, head, tb_hlist) { if (e < s_e) goto next; if (dumped) memset(&cb->args[2], 0, sizeof(cb->args) - 2 * sizeof(cb->args[0])); err = fib_table_dump(tb, skb, cb, &filter); if (err < 0) goto out; dumped = 1; next: e++; } } out: cb->args[1] = e; cb->args[0] = h; unlock: rcu_read_unlock(); return err; } /* Prepare and feed intra-kernel routing request. * Really, it should be netlink message, but :-( netlink * can be not configured, so that we feed it directly * to fib engine. It is legal, because all events occur * only when netlink is already locked. */ static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifaddr *ifa, u32 rt_priority) { struct net *net = dev_net(ifa->ifa_dev->dev); u32 tb_id = l3mdev_fib_table(ifa->ifa_dev->dev); struct fib_table *tb; struct fib_config cfg = { .fc_protocol = RTPROT_KERNEL, .fc_type = type, .fc_dst = dst, .fc_dst_len = dst_len, .fc_priority = rt_priority, .fc_prefsrc = ifa->ifa_local, .fc_oif = ifa->ifa_dev->dev->ifindex, .fc_nlflags = NLM_F_CREATE | NLM_F_APPEND, .fc_nlinfo = { .nl_net = net, }, }; if (!tb_id) tb_id = (type == RTN_UNICAST) ? RT_TABLE_MAIN : RT_TABLE_LOCAL; tb = fib_new_table(net, tb_id); if (!tb) return; cfg.fc_table = tb->tb_id; if (type != RTN_LOCAL) cfg.fc_scope = RT_SCOPE_LINK; else cfg.fc_scope = RT_SCOPE_HOST; if (cmd == RTM_NEWROUTE) fib_table_insert(net, tb, &cfg, NULL); else fib_table_delete(net, tb, &cfg, NULL); } void fib_add_ifaddr(struct in_ifaddr *ifa) { struct in_device *in_dev = ifa->ifa_dev; struct net_device *dev = in_dev->dev; struct in_ifaddr *prim = ifa; __be32 mask = ifa->ifa_mask; __be32 addr = ifa->ifa_local; __be32 prefix = ifa->ifa_address & mask; if (ifa->ifa_flags & IFA_F_SECONDARY) { prim = inet_ifa_byprefix(in_dev, prefix, mask); if (!prim) { pr_warn("%s: bug: prim == NULL\n", __func__); return; } } fib_magic(RTM_NEWROUTE, RTN_LOCAL, addr, 32, prim, 0); if (!(dev->flags & IFF_UP)) return; /* Add broadcast address, if it is explicitly assigned. */ if (ifa->ifa_broadcast && ifa->ifa_broadcast != htonl(0xFFFFFFFF)) { fib_magic(RTM_NEWROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim, 0); arp_invalidate(dev, ifa->ifa_broadcast, false); } if (!ipv4_is_zeronet(prefix) && !(ifa->ifa_flags & IFA_F_SECONDARY) && (prefix != addr || ifa->ifa_prefixlen < 32)) { if (!(ifa->ifa_flags & IFA_F_NOPREFIXROUTE)) fib_magic(RTM_NEWROUTE, dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST, prefix, ifa->ifa_prefixlen, prim, ifa->ifa_rt_priority); /* Add the network broadcast address, when it makes sense */ if (ifa->ifa_prefixlen < 31) { fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix | ~mask, 32, prim, 0); arp_invalidate(dev, prefix | ~mask, false); } } } void fib_modify_prefix_metric(struct in_ifaddr *ifa, u32 new_metric) { __be32 prefix = ifa->ifa_address & ifa->ifa_mask; struct in_device *in_dev = ifa->ifa_dev; struct net_device *dev = in_dev->dev; if (!(dev->flags & IFF_UP) || ifa->ifa_flags & (IFA_F_SECONDARY | IFA_F_NOPREFIXROUTE) || ipv4_is_zeronet(prefix) || (prefix == ifa->ifa_local && ifa->ifa_prefixlen == 32)) return; /* add the new */ fib_magic(RTM_NEWROUTE, dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST, prefix, ifa->ifa_prefixlen, ifa, new_metric); /* delete the old */ fib_magic(RTM_DELROUTE, dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST, prefix, ifa->ifa_prefixlen, ifa, ifa->ifa_rt_priority); } /* Delete primary or secondary address. * Optionally, on secondary address promotion consider the addresses * from subnet iprim as deleted, even if they are in device list. * In this case the secondary ifa can be in device list. */ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim) { struct in_device *in_dev = ifa->ifa_dev; struct net_device *dev = in_dev->dev; struct in_ifaddr *ifa1; struct in_ifaddr *prim = ifa, *prim1 = NULL; __be32 brd = ifa->ifa_address | ~ifa->ifa_mask; __be32 any = ifa->ifa_address & ifa->ifa_mask; #define LOCAL_OK 1 #define BRD_OK 2 #define BRD0_OK 4 #define BRD1_OK 8 unsigned int ok = 0; int subnet = 0; /* Primary network */ int gone = 1; /* Address is missing */ int same_prefsrc = 0; /* Another primary with same IP */ if (ifa->ifa_flags & IFA_F_SECONDARY) { prim = inet_ifa_byprefix(in_dev, any, ifa->ifa_mask); if (!prim) { /* if the device has been deleted, we don't perform * address promotion */ if (!in_dev->dead) pr_warn("%s: bug: prim == NULL\n", __func__); return; } if (iprim && iprim != prim) { pr_warn("%s: bug: iprim != prim\n", __func__); return; } } else if (!ipv4_is_zeronet(any) && (any != ifa->ifa_local || ifa->ifa_prefixlen < 32)) { if (!(ifa->ifa_flags & IFA_F_NOPREFIXROUTE)) fib_magic(RTM_DELROUTE, dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST, any, ifa->ifa_prefixlen, prim, 0); subnet = 1; } if (in_dev->dead) goto no_promotions; /* Deletion is more complicated than add. * We should take care of not to delete too much :-) * * Scan address list to be sure that addresses are really gone. */ rcu_read_lock(); in_dev_for_each_ifa_rcu(ifa1, in_dev) { if (ifa1 == ifa) { /* promotion, keep the IP */ gone = 0; continue; } /* Ignore IFAs from our subnet */ if (iprim && ifa1->ifa_mask == iprim->ifa_mask && inet_ifa_match(ifa1->ifa_address, iprim)) continue; /* Ignore ifa1 if it uses different primary IP (prefsrc) */ if (ifa1->ifa_flags & IFA_F_SECONDARY) { /* Another address from our subnet? */ if (ifa1->ifa_mask == prim->ifa_mask && inet_ifa_match(ifa1->ifa_address, prim)) prim1 = prim; else { /* We reached the secondaries, so * same_prefsrc should be determined. */ if (!same_prefsrc) continue; /* Search new prim1 if ifa1 is not * using the current prim1 */ if (!prim1 || ifa1->ifa_mask != prim1->ifa_mask || !inet_ifa_match(ifa1->ifa_address, prim1)) prim1 = inet_ifa_byprefix(in_dev, ifa1->ifa_address, ifa1->ifa_mask); if (!prim1) continue; if (prim1->ifa_local != prim->ifa_local) continue; } } else { if (prim->ifa_local != ifa1->ifa_local) continue; prim1 = ifa1; if (prim != prim1) same_prefsrc = 1; } if (ifa->ifa_local == ifa1->ifa_local) ok |= LOCAL_OK; if (ifa->ifa_broadcast == ifa1->ifa_broadcast) ok |= BRD_OK; if (brd == ifa1->ifa_broadcast) ok |= BRD1_OK; if (any == ifa1->ifa_broadcast) ok |= BRD0_OK; /* primary has network specific broadcasts */ if (prim1 == ifa1 && ifa1->ifa_prefixlen < 31) { __be32 brd1 = ifa1->ifa_address | ~ifa1->ifa_mask; __be32 any1 = ifa1->ifa_address & ifa1->ifa_mask; if (!ipv4_is_zeronet(any1)) { if (ifa->ifa_broadcast == brd1 || ifa->ifa_broadcast == any1) ok |= BRD_OK; if (brd == brd1 || brd == any1) ok |= BRD1_OK; if (any == brd1 || any == any1) ok |= BRD0_OK; } } } rcu_read_unlock(); no_promotions: if (!(ok & BRD_OK)) fib_magic(RTM_DELROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim, 0); if (subnet && ifa->ifa_prefixlen < 31) { if (!(ok & BRD1_OK)) fib_magic(RTM_DELROUTE, RTN_BROADCAST, brd, 32, prim, 0); if (!(ok & BRD0_OK)) fib_magic(RTM_DELROUTE, RTN_BROADCAST, any, 32, prim, 0); } if (!(ok & LOCAL_OK)) { unsigned int addr_type; fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim, 0); /* Check, that this local address finally disappeared. */ addr_type = inet_addr_type_dev_table(dev_net(dev), dev, ifa->ifa_local); if (gone && addr_type != RTN_LOCAL) { /* And the last, but not the least thing. * We must flush stray FIB entries. * * First of all, we scan fib_info list searching * for stray nexthop entries, then ignite fib_flush. */ if (fib_sync_down_addr(dev, ifa->ifa_local)) fib_flush(dev_net(dev)); } } #undef LOCAL_OK #undef BRD_OK #undef BRD0_OK #undef BRD1_OK } static void nl_fib_lookup(struct net *net, struct fib_result_nl *frn) { struct fib_result res; struct flowi4 fl4 = { .flowi4_mark = frn->fl_mark, .daddr = frn->fl_addr, .flowi4_dscp = inet_dsfield_to_dscp(frn->fl_tos), .flowi4_scope = frn->fl_scope, }; struct fib_table *tb; rcu_read_lock(); tb = fib_get_table(net, frn->tb_id_in); frn->err = -ENOENT; if (tb) { local_bh_disable(); frn->tb_id = tb->tb_id; frn->err = fib_table_lookup(tb, &fl4, &res, FIB_LOOKUP_NOREF); if (!frn->err) { frn->prefixlen = res.prefixlen; frn->nh_sel = res.nh_sel; frn->type = res.type; frn->scope = res.scope; } local_bh_enable(); } rcu_read_unlock(); } static void nl_fib_input(struct sk_buff *skb) { struct net *net; struct fib_result_nl *frn; struct nlmsghdr *nlh; u32 portid; net = sock_net(skb->sk); nlh = nlmsg_hdr(skb); if (skb->len < nlmsg_total_size(sizeof(*frn)) || skb->len < nlh->nlmsg_len || nlmsg_len(nlh) < sizeof(*frn)) return; skb = netlink_skb_clone(skb, GFP_KERNEL); if (!skb) return; nlh = nlmsg_hdr(skb); frn = nlmsg_data(nlh); nl_fib_lookup(net, frn); portid = NETLINK_CB(skb).portid; /* netlink portid */ NETLINK_CB(skb).portid = 0; /* from kernel */ NETLINK_CB(skb).dst_group = 0; /* unicast */ nlmsg_unicast(net->ipv4.fibnl, skb, portid); } static int __net_init nl_fib_lookup_init(struct net *net) { struct sock *sk; struct netlink_kernel_cfg cfg = { .input = nl_fib_input, }; sk = netlink_kernel_create(net, NETLINK_FIB_LOOKUP, &cfg); if (!sk) return -EAFNOSUPPORT; net->ipv4.fibnl = sk; return 0; } static void nl_fib_lookup_exit(struct net *net) { netlink_kernel_release(net->ipv4.fibnl); net->ipv4.fibnl = NULL; } static void fib_disable_ip(struct net_device *dev, unsigned long event, bool force) { if (fib_sync_down_dev(dev, event, force)) fib_flush(dev_net(dev)); else rt_cache_flush(dev_net(dev)); arp_ifdown(dev); } static int fib_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr) { struct in_ifaddr *ifa = ptr; struct net_device *dev = ifa->ifa_dev->dev; struct net *net = dev_net(dev); switch (event) { case NETDEV_UP: fib_add_ifaddr(ifa); #ifdef CONFIG_IP_ROUTE_MULTIPATH fib_sync_up(dev, RTNH_F_DEAD); #endif atomic_inc(&net->ipv4.dev_addr_genid); rt_cache_flush(net); break; case NETDEV_DOWN: fib_del_ifaddr(ifa, NULL); atomic_inc(&net->ipv4.dev_addr_genid); if (!ifa->ifa_dev->ifa_list) { /* Last address was deleted from this interface. * Disable IP. */ fib_disable_ip(dev, event, true); } else { rt_cache_flush(net); } break; } return NOTIFY_DONE; } static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_changeupper_info *upper_info = ptr; struct netdev_notifier_info_ext *info_ext = ptr; struct in_device *in_dev; struct net *net = dev_net(dev); struct in_ifaddr *ifa; unsigned int flags; if (event == NETDEV_UNREGISTER) { fib_disable_ip(dev, event, true); rt_flush_dev(dev); return NOTIFY_DONE; } in_dev = __in_dev_get_rtnl(dev); if (!in_dev) return NOTIFY_DONE; switch (event) { case NETDEV_UP: in_dev_for_each_ifa_rtnl(ifa, in_dev) { fib_add_ifaddr(ifa); } #ifdef CONFIG_IP_ROUTE_MULTIPATH fib_sync_up(dev, RTNH_F_DEAD); #endif atomic_inc(&net->ipv4.dev_addr_genid); rt_cache_flush(net); break; case NETDEV_DOWN: fib_disable_ip(dev, event, false); break; case NETDEV_CHANGE: flags = netif_get_flags(dev); if (flags & (IFF_RUNNING | IFF_LOWER_UP)) fib_sync_up(dev, RTNH_F_LINKDOWN); else fib_sync_down_dev(dev, event, false); rt_cache_flush(net); break; case NETDEV_CHANGEMTU: fib_sync_mtu(dev, info_ext->ext.mtu); rt_cache_flush(net); break; case NETDEV_CHANGEUPPER: upper_info = ptr; /* flush all routes if dev is linked to or unlinked from * an L3 master device (e.g., VRF) */ if (upper_info->upper_dev && netif_is_l3_master(upper_info->upper_dev)) fib_disable_ip(dev, NETDEV_DOWN, true); break; } return NOTIFY_DONE; } static struct notifier_block fib_inetaddr_notifier = { .notifier_call = fib_inetaddr_event, }; static struct notifier_block fib_netdev_notifier = { .notifier_call = fib_netdev_event, }; static int __net_init ip_fib_net_init(struct net *net) { int err; size_t size = sizeof(struct hlist_head) * FIB_TABLE_HASHSZ; err = fib4_notifier_init(net); if (err) return err; #ifdef CONFIG_IP_ROUTE_MULTIPATH /* Default to 3-tuple */ net->ipv4.sysctl_fib_multipath_hash_fields = FIB_MULTIPATH_HASH_FIELD_DEFAULT_MASK; #endif /* Avoid false sharing : Use at least a full cache line */ size = max_t(size_t, size, L1_CACHE_BYTES); net->ipv4.fib_table_hash = kzalloc(size, GFP_KERNEL); if (!net->ipv4.fib_table_hash) { err = -ENOMEM; goto err_table_hash_alloc; } err = fib4_rules_init(net); if (err < 0) goto err_rules_init; return 0; err_rules_init: kfree(net->ipv4.fib_table_hash); err_table_hash_alloc: fib4_notifier_exit(net); return err; } static void ip_fib_net_exit(struct net *net) { int i; ASSERT_RTNL_NET(net); #ifdef CONFIG_IP_MULTIPLE_TABLES RCU_INIT_POINTER(net->ipv4.fib_main, NULL); RCU_INIT_POINTER(net->ipv4.fib_default, NULL); #endif /* Destroy the tables in reverse order to guarantee that the * local table, ID 255, is destroyed before the main table, ID * 254. This is necessary as the local table may contain * references to data contained in the main table. */ for (i = FIB_TABLE_HASHSZ - 1; i >= 0; i--) { struct hlist_head *head = &net->ipv4.fib_table_hash[i]; struct hlist_node *tmp; struct fib_table *tb; hlist_for_each_entry_safe(tb, tmp, head, tb_hlist) { hlist_del(&tb->tb_hlist); fib_table_flush(net, tb, true); fib_free_table(tb); } } #ifdef CONFIG_IP_MULTIPLE_TABLES fib4_rules_exit(net); #endif kfree(net->ipv4.fib_table_hash); fib4_notifier_exit(net); } static int __net_init fib_net_init(struct net *net) { int error; #ifdef CONFIG_IP_ROUTE_CLASSID atomic_set(&net->ipv4.fib_num_tclassid_users, 0); #endif error = ip_fib_net_init(net); if (error < 0) goto out; error = fib4_semantics_init(net); if (error) goto out_semantics; error = nl_fib_lookup_init(net); if (error < 0) goto out_nlfl; error = fib_proc_init(net); if (error < 0) goto out_proc; out: return error; out_proc: nl_fib_lookup_exit(net); out_nlfl: fib4_semantics_exit(net); out_semantics: rtnl_net_lock(net); ip_fib_net_exit(net); rtnl_net_unlock(net); goto out; } static void __net_exit fib_net_exit(struct net *net) { fib_proc_exit(net); nl_fib_lookup_exit(net); } static void __net_exit fib_net_exit_batch(struct list_head *net_list) { struct net *net; rtnl_lock(); list_for_each_entry(net, net_list, exit_list) { __rtnl_net_lock(net); ip_fib_net_exit(net); __rtnl_net_unlock(net); } rtnl_unlock(); list_for_each_entry(net, net_list, exit_list) fib4_semantics_exit(net); } static struct pernet_operations fib_net_ops = { .init = fib_net_init, .exit = fib_net_exit, .exit_batch = fib_net_exit_batch, }; static const struct rtnl_msg_handler fib_rtnl_msg_handlers[] __initconst = { {.protocol = PF_INET, .msgtype = RTM_NEWROUTE, .doit = inet_rtm_newroute, .flags = RTNL_FLAG_DOIT_PERNET}, {.protocol = PF_INET, .msgtype = RTM_DELROUTE, .doit = inet_rtm_delroute, .flags = RTNL_FLAG_DOIT_PERNET}, {.protocol = PF_INET, .msgtype = RTM_GETROUTE, .dumpit = inet_dump_fib, .flags = RTNL_FLAG_DUMP_UNLOCKED | RTNL_FLAG_DUMP_SPLIT_NLM_DONE}, }; void __init ip_fib_init(void) { fib_trie_init(); register_pernet_subsys(&fib_net_ops); register_netdevice_notifier(&fib_netdev_notifier); register_inetaddr_notifier(&fib_inetaddr_notifier); rtnl_register_many(fib_rtnl_msg_handlers); } |
| 10 10 16 2 3 13 1 14 3 3 3 13 2 11 11 1 1 3 8 10 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 | // SPDX-License-Identifier: GPL-2.0 #include <linux/kernel.h> #include <linux/errno.h> #include <linux/file.h> #include <linux/io_uring/cmd.h> #include <linux/security.h> #include <linux/nospec.h> #include <uapi/linux/io_uring.h> #include "io_uring.h" #include "alloc_cache.h" #include "rsrc.h" #include "kbuf.h" #include "uring_cmd.h" #include "poll.h" void io_cmd_cache_free(const void *entry) { struct io_async_cmd *ac = (struct io_async_cmd *)entry; io_vec_free(&ac->vec); kfree(ac); } static void io_req_uring_cleanup(struct io_kiocb *req, unsigned int issue_flags) { struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct io_async_cmd *ac = req->async_data; if (issue_flags & IO_URING_F_UNLOCKED) return; io_alloc_cache_vec_kasan(&ac->vec); if (ac->vec.nr > IO_VEC_CACHE_SOFT_CAP) io_vec_free(&ac->vec); if (io_alloc_cache_put(&req->ctx->cmd_cache, ac)) { ioucmd->sqe = NULL; io_req_async_data_clear(req, REQ_F_NEED_CLEANUP); } } void io_uring_cmd_cleanup(struct io_kiocb *req) { io_req_uring_cleanup(req, 0); } bool io_uring_try_cancel_uring_cmd(struct io_ring_ctx *ctx, struct io_uring_task *tctx, bool cancel_all) { struct hlist_node *tmp; struct io_kiocb *req; bool ret = false; lockdep_assert_held(&ctx->uring_lock); hlist_for_each_entry_safe(req, tmp, &ctx->cancelable_uring_cmd, hash_node) { struct io_uring_cmd *cmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct file *file = req->file; if (!cancel_all && req->tctx != tctx) continue; if (cmd->flags & IORING_URING_CMD_CANCELABLE) { file->f_op->uring_cmd(cmd, IO_URING_F_CANCEL | IO_URING_F_COMPLETE_DEFER); ret = true; } } io_submit_flush_completions(ctx); return ret; } static void io_uring_cmd_del_cancelable(struct io_uring_cmd *cmd, unsigned int issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(cmd); struct io_ring_ctx *ctx = req->ctx; if (!(cmd->flags & IORING_URING_CMD_CANCELABLE)) return; cmd->flags &= ~IORING_URING_CMD_CANCELABLE; io_ring_submit_lock(ctx, issue_flags); hlist_del(&req->hash_node); io_ring_submit_unlock(ctx, issue_flags); } /* * Mark this command as concelable, then io_uring_try_cancel_uring_cmd() * will try to cancel this issued command by sending ->uring_cmd() with * issue_flags of IO_URING_F_CANCEL. * * The command is guaranteed to not be done when calling ->uring_cmd() * with IO_URING_F_CANCEL, but it is driver's responsibility to deal * with race between io_uring canceling and normal completion. */ void io_uring_cmd_mark_cancelable(struct io_uring_cmd *cmd, unsigned int issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(cmd); struct io_ring_ctx *ctx = req->ctx; /* * Doing cancelations on IOPOLL requests are not supported. Both * because they can't get canceled in the block stack, but also * because iopoll completion data overlaps with the hash_node used * for tracking. */ if (req->flags & REQ_F_IOPOLL) return; if (!(cmd->flags & IORING_URING_CMD_CANCELABLE)) { cmd->flags |= IORING_URING_CMD_CANCELABLE; io_ring_submit_lock(ctx, issue_flags); hlist_add_head(&req->hash_node, &ctx->cancelable_uring_cmd); io_ring_submit_unlock(ctx, issue_flags); } } EXPORT_SYMBOL_GPL(io_uring_cmd_mark_cancelable); void __io_uring_cmd_do_in_task(struct io_uring_cmd *ioucmd, io_req_tw_func_t task_work_cb, unsigned flags) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); if (WARN_ON_ONCE(req->flags & REQ_F_APOLL_MULTISHOT)) return; req->io_task_work.func = task_work_cb; __io_req_task_work_add(req, flags); } EXPORT_SYMBOL_GPL(__io_uring_cmd_do_in_task); static inline void io_req_set_cqe32_extra(struct io_kiocb *req, u64 extra1, u64 extra2) { req->big_cqe.extra1 = extra1; req->big_cqe.extra2 = extra2; } /* * Called by consumers of io_uring_cmd, if they originally returned * -EIOCBQUEUED upon receiving the command. */ void __io_uring_cmd_done(struct io_uring_cmd *ioucmd, s32 ret, u64 res2, unsigned issue_flags, bool is_cqe32) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); if (WARN_ON_ONCE(req->flags & REQ_F_APOLL_MULTISHOT)) return; io_uring_cmd_del_cancelable(ioucmd, issue_flags); if (ret < 0) req_set_fail(req); io_req_set_res(req, ret, 0); if (is_cqe32) { if (req->ctx->flags & IORING_SETUP_CQE_MIXED) req->cqe.flags |= IORING_CQE_F_32; io_req_set_cqe32_extra(req, res2, 0); } io_req_uring_cleanup(req, issue_flags); if (req->flags & REQ_F_IOPOLL) { /* order with io_iopoll_req_issued() checking ->iopoll_complete */ smp_store_release(&req->iopoll_completed, 1); } else if (issue_flags & IO_URING_F_COMPLETE_DEFER) { if (WARN_ON_ONCE(issue_flags & IO_URING_F_UNLOCKED)) return; io_req_complete_defer(req); } else { req->io_task_work.func = io_req_task_complete; io_req_task_work_add(req); } } EXPORT_SYMBOL_GPL(__io_uring_cmd_done); int io_uring_cmd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct io_async_cmd *ac; if (sqe->__pad1) return -EINVAL; ioucmd->flags = READ_ONCE(sqe->uring_cmd_flags); if (ioucmd->flags & ~IORING_URING_CMD_MASK) return -EINVAL; if (ioucmd->flags & IORING_URING_CMD_FIXED) { if (ioucmd->flags & IORING_URING_CMD_MULTISHOT) return -EINVAL; req->buf_index = READ_ONCE(sqe->buf_index); } if (!!(ioucmd->flags & IORING_URING_CMD_MULTISHOT) != !!(req->flags & REQ_F_BUFFER_SELECT)) return -EINVAL; ioucmd->cmd_op = READ_ONCE(sqe->cmd_op); ac = io_uring_alloc_async_data(&req->ctx->cmd_cache, req); if (!ac) return -ENOMEM; ioucmd->sqe = sqe; return 0; } /* * IORING_SETUP_SQE128 contexts allocate twice the normal SQE size for each * slot. */ static inline size_t uring_sqe_size(struct io_kiocb *req) { if (req->ctx->flags & IORING_SETUP_SQE128 || req->opcode == IORING_OP_URING_CMD128) return 2 * sizeof(struct io_uring_sqe); return sizeof(struct io_uring_sqe); } void io_uring_cmd_sqe_copy(struct io_kiocb *req) { struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct io_async_cmd *ac = req->async_data; /* Should not happen, as REQ_F_SQE_COPIED covers this */ if (WARN_ON_ONCE(ioucmd->sqe == ac->sqes)) return; memcpy(ac->sqes, ioucmd->sqe, uring_sqe_size(req)); ioucmd->sqe = ac->sqes; } int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags) { struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); struct io_ring_ctx *ctx = req->ctx; struct file *file = req->file; int ret; if (!file->f_op->uring_cmd) return -EOPNOTSUPP; ret = security_uring_cmd(ioucmd); if (ret) return ret; if (ctx->flags & IORING_SETUP_SQE128 || req->opcode == IORING_OP_URING_CMD128) issue_flags |= IO_URING_F_SQE128; if (ctx->flags & (IORING_SETUP_CQE32 | IORING_SETUP_CQE_MIXED)) issue_flags |= IO_URING_F_CQE32; if (io_is_compat(ctx)) issue_flags |= IO_URING_F_COMPAT; if (ctx->flags & IORING_SETUP_IOPOLL && file->f_op->uring_cmd_iopoll) { req->flags |= REQ_F_IOPOLL; issue_flags |= IO_URING_F_IOPOLL; req->iopoll_completed = 0; if (ctx->flags & IORING_SETUP_HYBRID_IOPOLL) { /* make sure every req only blocks once */ req->flags &= ~REQ_F_IOPOLL_STATE; req->iopoll_start = ktime_get_ns(); } } ret = file->f_op->uring_cmd(ioucmd, issue_flags); if (ioucmd->flags & IORING_URING_CMD_MULTISHOT) { if (ret >= 0) return IOU_ISSUE_SKIP_COMPLETE; } if (ret == -EAGAIN) { ioucmd->flags |= IORING_URING_CMD_REISSUE; return ret; } if (ret == -EIOCBQUEUED) return ret; if (ret < 0) req_set_fail(req); io_req_uring_cleanup(req, issue_flags); io_req_set_res(req, ret, 0); return IOU_COMPLETE; } int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, struct iov_iter *iter, struct io_uring_cmd *ioucmd, unsigned int issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); if (WARN_ON_ONCE(!(ioucmd->flags & IORING_URING_CMD_FIXED))) return -EINVAL; return io_import_reg_buf(req, iter, ubuf, len, rw, issue_flags); } EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed); int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd, const struct iovec __user *uvec, size_t uvec_segs, int ddir, struct iov_iter *iter, unsigned issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); struct io_async_cmd *ac = req->async_data; int ret; if (WARN_ON_ONCE(!(ioucmd->flags & IORING_URING_CMD_FIXED))) return -EINVAL; ret = io_prep_reg_iovec(req, &ac->vec, uvec, uvec_segs); if (ret) return ret; return io_import_reg_vec(ddir, iter, req, &ac->vec, uvec_segs, issue_flags); } EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed_vec); void io_uring_cmd_issue_blocking(struct io_uring_cmd *ioucmd) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); io_req_queue_iowq(req); } int io_cmd_poll_multishot(struct io_uring_cmd *cmd, unsigned int issue_flags, __poll_t mask) { struct io_kiocb *req = cmd_to_io_kiocb(cmd); int ret; if (likely(req->flags & REQ_F_APOLL_MULTISHOT)) return 0; req->flags |= REQ_F_APOLL_MULTISHOT; mask &= ~EPOLLONESHOT; ret = io_arm_apoll(req, issue_flags, mask); return ret == IO_APOLL_OK ? -EIOCBQUEUED : -ECANCELED; } bool io_uring_cmd_post_mshot_cqe32(struct io_uring_cmd *cmd, unsigned int issue_flags, struct io_uring_cqe cqe[2]) { struct io_kiocb *req = cmd_to_io_kiocb(cmd); if (WARN_ON_ONCE(!(issue_flags & IO_URING_F_MULTISHOT))) return false; return io_req_post_cqe32(req, cqe); } /* * Work with io_uring_mshot_cmd_post_cqe() together for committing the * provided buffer upfront */ struct io_br_sel io_uring_cmd_buffer_select(struct io_uring_cmd *ioucmd, unsigned buf_group, size_t *len, unsigned int issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); if (!(ioucmd->flags & IORING_URING_CMD_MULTISHOT)) return (struct io_br_sel) { .val = -EINVAL }; if (WARN_ON_ONCE(!io_do_buffer_select(req))) return (struct io_br_sel) { .val = -EINVAL }; return io_buffer_select(req, len, buf_group, issue_flags); } EXPORT_SYMBOL_GPL(io_uring_cmd_buffer_select); /* * Return true if this multishot uring_cmd needs to be completed, otherwise * the event CQE is posted successfully. * * This function must use `struct io_br_sel` returned from * io_uring_cmd_buffer_select() for committing the buffer in the same * uring_cmd submission context. */ bool io_uring_mshot_cmd_post_cqe(struct io_uring_cmd *ioucmd, struct io_br_sel *sel, unsigned int issue_flags) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); unsigned int cflags = 0; if (!(ioucmd->flags & IORING_URING_CMD_MULTISHOT)) return true; if (sel->val > 0) { cflags = io_put_kbuf(req, sel->val, sel->buf_list); if (io_req_post_cqe(req, sel->val, cflags | IORING_CQE_F_MORE)) return false; } io_kbuf_recycle(req, sel->buf_list, issue_flags); if (sel->val < 0) req_set_fail(req); io_req_set_res(req, sel->val, cflags); return true; } EXPORT_SYMBOL_GPL(io_uring_mshot_cmd_post_cqe); |
| 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 | /* * fs/nfs/idmap.c * * UID and GID to name mapping for clients. * * Copyright (c) 2002 The Regents of the University of Michigan. * All rights reserved. * * Marius Aamodt Eriksen <marius@umich.edu> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/types.h> #include <linux/parser.h> #include <linux/fs.h> #include <net/net_namespace.h> #include <linux/sunrpc/rpc_pipe_fs.h> #include <linux/nfs_fs.h> #include <linux/nfs_fs_sb.h> #include <linux/key.h> #include <linux/keyctl.h> #include <linux/key-type.h> #include <keys/user-type.h> #include <keys/request_key_auth-type.h> #include <linux/module.h> #include <linux/user_namespace.h> #include "internal.h" #include "netns.h" #include "nfs4idmap.h" #include "nfs4trace.h" #define NFS_UINT_MAXLEN 11 static const struct cred *id_resolver_cache; static struct key_type key_type_id_resolver_legacy; struct idmap_legacy_upcalldata { struct rpc_pipe_msg pipe_msg; struct idmap_msg idmap_msg; struct key *authkey; struct idmap *idmap; }; struct idmap { struct rpc_pipe_dir_object idmap_pdo; struct rpc_pipe *idmap_pipe; struct idmap_legacy_upcalldata *idmap_upcall_data; struct mutex idmap_mutex; struct user_namespace *user_ns; }; static struct user_namespace *idmap_userns(const struct idmap *idmap) { if (idmap && idmap->user_ns) return idmap->user_ns; return &init_user_ns; } /** * nfs_fattr_init_names - initialise the nfs_fattr owner_name/group_name fields * @fattr: fully initialised struct nfs_fattr * @owner_name: owner name string cache * @group_name: group name string cache */ void nfs_fattr_init_names(struct nfs_fattr *fattr, struct nfs4_string *owner_name, struct nfs4_string *group_name) { fattr->owner_name = owner_name; fattr->group_name = group_name; } static void nfs_fattr_free_owner_name(struct nfs_fattr *fattr) { fattr->valid &= ~NFS_ATTR_FATTR_OWNER_NAME; kfree(fattr->owner_name->data); } static void nfs_fattr_free_group_name(struct nfs_fattr *fattr) { fattr->valid &= ~NFS_ATTR_FATTR_GROUP_NAME; kfree(fattr->group_name->data); } static bool nfs_fattr_map_owner_name(struct nfs_server *server, struct nfs_fattr *fattr) { struct nfs4_string *owner = fattr->owner_name; kuid_t uid; if (!(fattr->valid & NFS_ATTR_FATTR_OWNER_NAME)) return false; if (nfs_map_name_to_uid(server, owner->data, owner->len, &uid) == 0) { fattr->uid = uid; fattr->valid |= NFS_ATTR_FATTR_OWNER; } return true; } static bool nfs_fattr_map_group_name(struct nfs_server *server, struct nfs_fattr *fattr) { struct nfs4_string *group = fattr->group_name; kgid_t gid; if (!(fattr->valid & NFS_ATTR_FATTR_GROUP_NAME)) return false; if (nfs_map_group_to_gid(server, group->data, group->len, &gid) == 0) { fattr->gid = gid; fattr->valid |= NFS_ATTR_FATTR_GROUP; } return true; } /** * nfs_fattr_free_names - free up the NFSv4 owner and group strings * @fattr: a fully initialised nfs_fattr structure */ void nfs_fattr_free_names(struct nfs_fattr *fattr) { if (fattr->valid & NFS_ATTR_FATTR_OWNER_NAME) nfs_fattr_free_owner_name(fattr); if (fattr->valid & NFS_ATTR_FATTR_GROUP_NAME) nfs_fattr_free_group_name(fattr); } /** * nfs_fattr_map_and_free_names - map owner/group strings into uid/gid and free * @server: pointer to the filesystem nfs_server structure * @fattr: a fully initialised nfs_fattr structure * * This helper maps the cached NFSv4 owner/group strings in fattr into * their numeric uid/gid equivalents, and then frees the cached strings. */ void nfs_fattr_map_and_free_names(struct nfs_server *server, struct nfs_fattr *fattr) { if (nfs_fattr_map_owner_name(server, fattr)) nfs_fattr_free_owner_name(fattr); if (nfs_fattr_map_group_name(server, fattr)) nfs_fattr_free_group_name(fattr); } int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res) { unsigned long val; char buf[16]; if (memchr(name, '@', namelen) != NULL || namelen >= sizeof(buf)) return 0; memcpy(buf, name, namelen); buf[namelen] = '\0'; if (kstrtoul(buf, 0, &val) != 0) return 0; *res = val; return 1; } EXPORT_SYMBOL_GPL(nfs_map_string_to_numeric); static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen) { return snprintf(buf, buflen, "%u", id); } static struct key_type key_type_id_resolver = { .name = "id_resolver", .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, .read = user_read, }; int nfs_idmap_init(void) { struct cred *cred; struct key *keyring; int ret = 0; printk(KERN_NOTICE "NFS: Registering the %s key type\n", key_type_id_resolver.name); cred = prepare_kernel_cred(&init_task); if (!cred) return -ENOMEM; keyring = keyring_alloc(".id_resolver", GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred, (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ, KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL); if (IS_ERR(keyring)) { ret = PTR_ERR(keyring); goto failed_put_cred; } ret = register_key_type(&key_type_id_resolver); if (ret < 0) goto failed_put_key; ret = register_key_type(&key_type_id_resolver_legacy); if (ret < 0) goto failed_reg_legacy; set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags); cred->thread_keyring = keyring; cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING; id_resolver_cache = cred; return 0; failed_reg_legacy: unregister_key_type(&key_type_id_resolver); failed_put_key: key_put(keyring); failed_put_cred: put_cred(cred); return ret; } void nfs_idmap_quit(void) { key_revoke(id_resolver_cache->thread_keyring); unregister_key_type(&key_type_id_resolver); unregister_key_type(&key_type_id_resolver_legacy); put_cred(id_resolver_cache); } /* * Assemble the description to pass to request_key() * This function will allocate a new string and update dest to point * at it. The caller is responsible for freeing dest. * * On error 0 is returned. Otherwise, the length of dest is returned. */ static ssize_t nfs_idmap_get_desc(const char *name, size_t namelen, const char *type, size_t typelen, char **desc) { char *cp; size_t desclen = typelen + namelen + 2; *desc = kmalloc(desclen, GFP_KERNEL); if (!*desc) return -ENOMEM; cp = *desc; memcpy(cp, type, typelen); cp += typelen; *cp++ = ':'; memcpy(cp, name, namelen); cp += namelen; *cp = '\0'; return desclen; } static struct key *nfs_idmap_request_key(const char *name, size_t namelen, const char *type, struct idmap *idmap) { char *desc; struct key *rkey = ERR_PTR(-EAGAIN); ssize_t ret; ret = nfs_idmap_get_desc(name, namelen, type, strlen(type), &desc); if (ret < 0) return ERR_PTR(ret); if (!idmap->user_ns || idmap->user_ns == &init_user_ns) rkey = request_key(&key_type_id_resolver, desc, ""); if (IS_ERR(rkey)) { mutex_lock(&idmap->idmap_mutex); rkey = request_key_with_auxdata(&key_type_id_resolver_legacy, desc, NULL, "", 0, idmap); mutex_unlock(&idmap->idmap_mutex); } if (!IS_ERR(rkey)) set_bit(KEY_FLAG_ROOT_CAN_INVAL, &rkey->flags); kfree(desc); return rkey; } static ssize_t nfs_idmap_get_key(const char *name, size_t namelen, const char *type, void *data, size_t data_size, struct idmap *idmap) { struct key *rkey; const struct user_key_payload *payload; ssize_t ret; scoped_with_creds(id_resolver_cache) rkey = nfs_idmap_request_key(name, namelen, type, idmap); if (IS_ERR(rkey)) { ret = PTR_ERR(rkey); goto out; } rcu_read_lock(); rkey->perm |= KEY_USR_VIEW; ret = key_validate(rkey); if (ret < 0) goto out_up; payload = user_key_payload_rcu(rkey); if (IS_ERR_OR_NULL(payload)) { ret = PTR_ERR(payload); goto out_up; } ret = payload->datalen; if (ret > 0 && ret <= data_size) memcpy(data, payload->data, ret); else ret = -EINVAL; out_up: rcu_read_unlock(); key_put(rkey); out: return ret; } /* ID -> Name */ static ssize_t nfs_idmap_lookup_name(__u32 id, const char *type, char *buf, size_t buflen, struct idmap *idmap) { char id_str[NFS_UINT_MAXLEN]; int id_len; ssize_t ret; id_len = nfs_map_numeric_to_string(id, id_str, sizeof(id_str)); ret = nfs_idmap_get_key(id_str, id_len, type, buf, buflen, idmap); if (ret < 0) return -EINVAL; return ret; } /* Name -> ID */ static int nfs_idmap_lookup_id(const char *name, size_t namelen, const char *type, __u32 *id, struct idmap *idmap) { char id_str[NFS_UINT_MAXLEN]; long id_long; ssize_t data_size; int ret = 0; data_size = nfs_idmap_get_key(name, namelen, type, id_str, NFS_UINT_MAXLEN, idmap); if (data_size <= 0) { ret = -EINVAL; } else { ret = kstrtol(id_str, 10, &id_long); if (!ret) *id = (__u32)id_long; } return ret; } /* idmap classic begins here */ enum { Opt_find_uid, Opt_find_gid, Opt_find_user, Opt_find_group, Opt_find_err }; static const match_table_t nfs_idmap_tokens = { { Opt_find_uid, "uid:%s" }, { Opt_find_gid, "gid:%s" }, { Opt_find_user, "user:%s" }, { Opt_find_group, "group:%s" }, { Opt_find_err, NULL } }; static int nfs_idmap_legacy_upcall(struct key *, void *); static ssize_t idmap_pipe_downcall(struct file *, const char __user *, size_t); static void idmap_release_pipe(struct inode *); static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *); static const struct rpc_pipe_ops idmap_upcall_ops = { .upcall = rpc_pipe_generic_upcall, .downcall = idmap_pipe_downcall, .release_pipe = idmap_release_pipe, .destroy_msg = idmap_pipe_destroy_msg, }; static struct key_type key_type_id_resolver_legacy = { .name = "id_legacy", .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, .read = user_read, .request_key = nfs_idmap_legacy_upcall, }; static void nfs_idmap_pipe_destroy(struct dentry *dir, struct rpc_pipe_dir_object *pdo) { struct idmap *idmap = pdo->pdo_data; rpc_unlink(idmap->idmap_pipe); } static int nfs_idmap_pipe_create(struct dentry *dir, struct rpc_pipe_dir_object *pdo) { struct idmap *idmap = pdo->pdo_data; return rpc_mkpipe_dentry(dir, "idmap", idmap, idmap->idmap_pipe); } static const struct rpc_pipe_dir_object_ops nfs_idmap_pipe_dir_object_ops = { .create = nfs_idmap_pipe_create, .destroy = nfs_idmap_pipe_destroy, }; int nfs_idmap_new(struct nfs_client *clp) { struct idmap *idmap; struct rpc_pipe *pipe; int error; idmap = kzalloc_obj(*idmap); if (idmap == NULL) return -ENOMEM; mutex_init(&idmap->idmap_mutex); idmap->user_ns = get_user_ns(clp->cl_rpcclient->cl_cred->user_ns); rpc_init_pipe_dir_object(&idmap->idmap_pdo, &nfs_idmap_pipe_dir_object_ops, idmap); pipe = rpc_mkpipe_data(&idmap_upcall_ops, 0); if (IS_ERR(pipe)) { error = PTR_ERR(pipe); goto err; } idmap->idmap_pipe = pipe; error = rpc_add_pipe_dir_object(clp->cl_net, &clp->cl_rpcclient->cl_pipedir_objects, &idmap->idmap_pdo); if (error) goto err_destroy_pipe; clp->cl_idmap = idmap; return 0; err_destroy_pipe: rpc_destroy_pipe_data(idmap->idmap_pipe); err: put_user_ns(idmap->user_ns); kfree(idmap); return error; } void nfs_idmap_delete(struct nfs_client *clp) { struct idmap *idmap = clp->cl_idmap; if (!idmap) return; clp->cl_idmap = NULL; rpc_remove_pipe_dir_object(clp->cl_net, &clp->cl_rpcclient->cl_pipedir_objects, &idmap->idmap_pdo); rpc_destroy_pipe_data(idmap->idmap_pipe); put_user_ns(idmap->user_ns); kfree(idmap); } static int nfs_idmap_prepare_message(char *desc, struct idmap *idmap, struct idmap_msg *im, struct rpc_pipe_msg *msg) { substring_t substr; int token, ret; im->im_type = IDMAP_TYPE_GROUP; token = match_token(desc, nfs_idmap_tokens, &substr); switch (token) { case Opt_find_uid: im->im_type = IDMAP_TYPE_USER; fallthrough; case Opt_find_gid: im->im_conv = IDMAP_CONV_NAMETOID; ret = match_strlcpy(im->im_name, &substr, IDMAP_NAMESZ); break; case Opt_find_user: im->im_type = IDMAP_TYPE_USER; fallthrough; case Opt_find_group: im->im_conv = IDMAP_CONV_IDTONAME; ret = match_int(&substr, &im->im_id); if (ret) goto out; break; default: ret = -EINVAL; goto out; } msg->data = im; msg->len = sizeof(struct idmap_msg); out: return ret; } static bool nfs_idmap_prepare_pipe_upcall(struct idmap *idmap, struct idmap_legacy_upcalldata *data) { if (idmap->idmap_upcall_data != NULL) { WARN_ON_ONCE(1); return false; } idmap->idmap_upcall_data = data; return true; } static void nfs_idmap_complete_pipe_upcall(struct idmap_legacy_upcalldata *data, int ret) { complete_request_key(data->authkey, ret); key_put(data->authkey); kfree(data); } static void nfs_idmap_abort_pipe_upcall(struct idmap *idmap, struct idmap_legacy_upcalldata *data, int ret) { if (cmpxchg(&idmap->idmap_upcall_data, data, NULL) == data) nfs_idmap_complete_pipe_upcall(data, ret); } static int nfs_idmap_legacy_upcall(struct key *authkey, void *aux) { struct idmap_legacy_upcalldata *data; struct request_key_auth *rka = get_request_key_auth(authkey); struct rpc_pipe_msg *msg; struct idmap_msg *im; struct idmap *idmap = aux; struct key *key = rka->target_key; int ret = -ENOKEY; if (!aux) goto out1; /* msg and im are freed in idmap_pipe_destroy_msg */ ret = -ENOMEM; data = kzalloc_obj(*data); if (!data) goto out1; msg = &data->pipe_msg; im = &data->idmap_msg; data->idmap = idmap; data->authkey = key_get(authkey); ret = nfs_idmap_prepare_message(key->description, idmap, im, msg); if (ret < 0) goto out2; ret = -EAGAIN; if (!nfs_idmap_prepare_pipe_upcall(idmap, data)) goto out2; ret = rpc_queue_upcall(idmap->idmap_pipe, msg); if (ret < 0) nfs_idmap_abort_pipe_upcall(idmap, data, ret); return ret; out2: kfree(data); out1: complete_request_key(authkey, ret); return ret; } static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data, size_t datalen) { return key_instantiate_and_link(key, data, datalen, id_resolver_cache->thread_keyring, authkey); } static int nfs_idmap_read_and_verify_message(struct idmap_msg *im, struct idmap_msg *upcall, struct key *key, struct key *authkey) { char id_str[NFS_UINT_MAXLEN]; size_t len; int ret = -ENOKEY; /* ret = -ENOKEY */ if (upcall->im_type != im->im_type || upcall->im_conv != im->im_conv) goto out; switch (im->im_conv) { case IDMAP_CONV_NAMETOID: if (strcmp(upcall->im_name, im->im_name) != 0) break; /* Note: here we store the NUL terminator too */ len = 1 + nfs_map_numeric_to_string(im->im_id, id_str, sizeof(id_str)); ret = nfs_idmap_instantiate(key, authkey, id_str, len); break; case IDMAP_CONV_IDTONAME: if (upcall->im_id != im->im_id) break; len = strlen(im->im_name); ret = nfs_idmap_instantiate(key, authkey, im->im_name, len); break; default: ret = -EINVAL; } out: return ret; } static ssize_t idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) { struct request_key_auth *rka; struct rpc_inode *rpci = RPC_I(file_inode(filp)); struct idmap *idmap = (struct idmap *)rpci->private; struct idmap_legacy_upcalldata *data; struct key *authkey; struct idmap_msg im; size_t namelen_in; int ret = -ENOKEY; /* If instantiation is successful, anyone waiting for key construction * will have been woken up and someone else may now have used * idmap_key_cons - so after this point we may no longer touch it. */ data = xchg(&idmap->idmap_upcall_data, NULL); if (data == NULL) goto out_noupcall; authkey = data->authkey; rka = get_request_key_auth(authkey); if (mlen != sizeof(im)) { ret = -ENOSPC; goto out; } if (copy_from_user(&im, src, mlen) != 0) { ret = -EFAULT; goto out; } if (!(im.im_status & IDMAP_STATUS_SUCCESS)) { ret = -ENOKEY; goto out; } namelen_in = strnlen(im.im_name, IDMAP_NAMESZ); if (namelen_in == 0 || namelen_in == IDMAP_NAMESZ) { ret = -EINVAL; goto out; } ret = nfs_idmap_read_and_verify_message(&im, &data->idmap_msg, rka->target_key, authkey); if (ret >= 0) { key_set_timeout(rka->target_key, nfs_idmap_cache_timeout); ret = mlen; } out: nfs_idmap_complete_pipe_upcall(data, ret); out_noupcall: return ret; } static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *msg) { struct idmap_legacy_upcalldata *data = container_of(msg, struct idmap_legacy_upcalldata, pipe_msg); struct idmap *idmap = data->idmap; if (msg->errno) nfs_idmap_abort_pipe_upcall(idmap, data, msg->errno); } static void idmap_release_pipe(struct inode *inode) { struct rpc_inode *rpci = RPC_I(inode); struct idmap *idmap = (struct idmap *)rpci->private; struct idmap_legacy_upcalldata *data; data = xchg(&idmap->idmap_upcall_data, NULL); if (data) nfs_idmap_complete_pipe_upcall(data, -EPIPE); } int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, kuid_t *uid) { struct idmap *idmap = server->nfs_client->cl_idmap; __u32 id = -1; int ret = 0; if (!nfs_map_string_to_numeric(name, namelen, &id)) ret = nfs_idmap_lookup_id(name, namelen, "uid", &id, idmap); if (ret == 0) { *uid = make_kuid(idmap_userns(idmap), id); if (!uid_valid(*uid)) ret = -ERANGE; } trace_nfs4_map_name_to_uid(name, namelen, id, ret); return ret; } int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, kgid_t *gid) { struct idmap *idmap = server->nfs_client->cl_idmap; __u32 id = -1; int ret = 0; if (!nfs_map_string_to_numeric(name, namelen, &id)) ret = nfs_idmap_lookup_id(name, namelen, "gid", &id, idmap); if (ret == 0) { *gid = make_kgid(idmap_userns(idmap), id); if (!gid_valid(*gid)) ret = -ERANGE; } trace_nfs4_map_group_to_gid(name, namelen, id, ret); return ret; } int nfs_map_uid_to_name(const struct nfs_server *server, kuid_t uid, char *buf, size_t buflen) { struct idmap *idmap = server->nfs_client->cl_idmap; int ret = -EINVAL; __u32 id; id = from_kuid_munged(idmap_userns(idmap), uid); if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) ret = nfs_idmap_lookup_name(id, "user", buf, buflen, idmap); if (ret < 0) ret = nfs_map_numeric_to_string(id, buf, buflen); trace_nfs4_map_uid_to_name(buf, ret, id, ret); return ret; } int nfs_map_gid_to_group(const struct nfs_server *server, kgid_t gid, char *buf, size_t buflen) { struct idmap *idmap = server->nfs_client->cl_idmap; int ret = -EINVAL; __u32 id; id = from_kgid_munged(idmap_userns(idmap), gid); if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) ret = nfs_idmap_lookup_name(id, "group", buf, buflen, idmap); if (ret < 0) ret = nfs_map_numeric_to_string(id, buf, buflen); trace_nfs4_map_gid_to_group(buf, ret, id, ret); return ret; } |
| 45 3 43 53 5 5 5 6 6 6 4 1 3 2 2 1 2 5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | // SPDX-License-Identifier: GPL-2.0-or-later /* user_defined.c: user defined key type * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #include <linux/export.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/seq_file.h> #include <linux/err.h> #include <keys/user-type.h> #include <linux/uaccess.h> #include "internal.h" static int logon_vet_description(const char *desc); /* * user defined keys take an arbitrary string as the description and an * arbitrary blob of data as the payload */ struct key_type key_type_user = { .name = "user", .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .update = user_update, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, .read = user_read, }; EXPORT_SYMBOL_GPL(key_type_user); /* * This key type is essentially the same as key_type_user, but it does * not define a .read op. This is suitable for storing username and * password pairs in the keyring that you do not want to be readable * from userspace. */ struct key_type key_type_logon = { .name = "logon", .preparse = user_preparse, .free_preparse = user_free_preparse, .instantiate = generic_key_instantiate, .update = user_update, .revoke = user_revoke, .destroy = user_destroy, .describe = user_describe, .vet_description = logon_vet_description, }; EXPORT_SYMBOL_GPL(key_type_logon); /* * Preparse a user defined key payload */ int user_preparse(struct key_preparsed_payload *prep) { struct user_key_payload *upayload; size_t datalen = prep->datalen; if (datalen == 0 || datalen > 32767 || !prep->data) return -EINVAL; upayload = kmalloc(sizeof(*upayload) + datalen, GFP_KERNEL); if (!upayload) return -ENOMEM; /* attach the data */ prep->quotalen = datalen; prep->payload.data[0] = upayload; upayload->datalen = datalen; memcpy(upayload->data, prep->data, datalen); return 0; } EXPORT_SYMBOL_GPL(user_preparse); /* * Free a preparse of a user defined key payload */ void user_free_preparse(struct key_preparsed_payload *prep) { kfree_sensitive(prep->payload.data[0]); } EXPORT_SYMBOL_GPL(user_free_preparse); static void user_free_payload_rcu(struct rcu_head *head) { struct user_key_payload *payload; payload = container_of(head, struct user_key_payload, rcu); kfree_sensitive(payload); } /* * update a user defined key * - the key's semaphore is write-locked */ int user_update(struct key *key, struct key_preparsed_payload *prep) { struct user_key_payload *zap = NULL; int ret; /* check the quota and attach the new data */ ret = key_payload_reserve(key, prep->datalen); if (ret < 0) return ret; /* attach the new data, displacing the old */ key->expiry = prep->expiry; if (key_is_positive(key)) zap = dereference_key_locked(key); rcu_assign_keypointer(key, prep->payload.data[0]); prep->payload.data[0] = NULL; if (zap) call_rcu(&zap->rcu, user_free_payload_rcu); return ret; } EXPORT_SYMBOL_GPL(user_update); /* * dispose of the links from a revoked keyring * - called with the key sem write-locked */ void user_revoke(struct key *key) { struct user_key_payload *upayload = user_key_payload_locked(key); /* clear the quota */ key_payload_reserve(key, 0); if (upayload) { rcu_assign_keypointer(key, NULL); call_rcu(&upayload->rcu, user_free_payload_rcu); } } EXPORT_SYMBOL(user_revoke); /* * dispose of the data dangling from the corpse of a user key */ void user_destroy(struct key *key) { struct user_key_payload *upayload = key->payload.data[0]; kfree_sensitive(upayload); } EXPORT_SYMBOL_GPL(user_destroy); /* * describe the user key */ void user_describe(const struct key *key, struct seq_file *m) { seq_puts(m, key->description); if (key_is_positive(key)) seq_printf(m, ": %u", key->datalen); } EXPORT_SYMBOL_GPL(user_describe); /* * read the key data * - the key's semaphore is read-locked */ long user_read(const struct key *key, char *buffer, size_t buflen) { const struct user_key_payload *upayload; long ret; upayload = user_key_payload_locked(key); ret = upayload->datalen; /* we can return the data as is */ if (buffer && buflen > 0) { if (buflen > upayload->datalen) buflen = upayload->datalen; memcpy(buffer, upayload->data, buflen); } return ret; } EXPORT_SYMBOL_GPL(user_read); /* Vet the description for a "logon" key */ static int logon_vet_description(const char *desc) { char *p; /* require a "qualified" description string */ p = strchr(desc, ':'); if (!p) return -EINVAL; /* also reject description with ':' as first char */ if (p == desc) return -EINVAL; return 0; } |
| 1 1 1 1 1 1 1 4 4 4 4 4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Cryptographic API. * * DES & Triple DES EDE Cipher Algorithms. * * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no> */ #include <crypto/des.h> #include <crypto/internal/des.h> #include <linux/bitops.h> #include <linux/compiler.h> #include <linux/crypto.h> #include <linux/errno.h> #include <linux/export.h> #include <linux/fips.h> #include <linux/init.h> #include <linux/module.h> #include <linux/string.h> #include <linux/types.h> #include <linux/unaligned.h> #define ROL(x, r) ((x) = rol32((x), (r))) #define ROR(x, r) ((x) = ror32((x), (r))) /* Lookup tables for key expansion */ static const u8 pc1[256] = { 0x00, 0x00, 0x40, 0x04, 0x10, 0x10, 0x50, 0x14, 0x04, 0x40, 0x44, 0x44, 0x14, 0x50, 0x54, 0x54, 0x02, 0x02, 0x42, 0x06, 0x12, 0x12, 0x52, 0x16, 0x06, 0x42, 0x46, 0x46, 0x16, 0x52, 0x56, 0x56, 0x80, 0x08, 0xc0, 0x0c, 0x90, 0x18, 0xd0, 0x1c, 0x84, 0x48, 0xc4, 0x4c, 0x94, 0x58, 0xd4, 0x5c, 0x82, 0x0a, 0xc2, 0x0e, 0x92, 0x1a, 0xd2, 0x1e, 0x86, 0x4a, 0xc6, 0x4e, 0x96, 0x5a, 0xd6, 0x5e, 0x20, 0x20, 0x60, 0x24, 0x30, 0x30, 0x70, 0x34, 0x24, 0x60, 0x64, 0x64, 0x34, 0x70, 0x74, 0x74, 0x22, 0x22, 0x62, 0x26, 0x32, 0x32, 0x72, 0x36, 0x26, 0x62, 0x66, 0x66, 0x36, 0x72, 0x76, 0x76, 0xa0, 0x28, 0xe0, 0x2c, 0xb0, 0x38, 0xf0, 0x3c, 0xa4, 0x68, 0xe4, 0x6c, 0xb4, 0x78, 0xf4, 0x7c, 0xa2, 0x2a, 0xe2, 0x2e, 0xb2, 0x3a, 0xf2, 0x3e, 0xa6, 0x6a, 0xe6, 0x6e, 0xb6, 0x7a, 0xf6, 0x7e, 0x08, 0x80, 0x48, 0x84, 0x18, 0x90, 0x58, 0x94, 0x0c, 0xc0, 0x4c, 0xc4, 0x1c, 0xd0, 0x5c, 0xd4, 0x0a, 0x82, 0x4a, 0x86, 0x1a, 0x92, 0x5a, 0x96, 0x0e, 0xc2, 0x4e, 0xc6, 0x1e, 0xd2, 0x5e, 0xd6, 0x88, 0x88, 0xc8, 0x8c, 0x98, 0x98, 0xd8, 0x9c, 0x8c, 0xc8, 0xcc, 0xcc, 0x9c, 0xd8, 0xdc, 0xdc, 0x8a, 0x8a, 0xca, 0x8e, 0x9a, 0x9a, 0xda, 0x9e, 0x8e, 0xca, 0xce, 0xce, 0x9e, 0xda, 0xde, 0xde, 0x28, 0xa0, 0x68, 0xa4, 0x38, 0xb0, 0x78, 0xb4, 0x2c, 0xe0, 0x6c, 0xe4, 0x3c, 0xf0, 0x7c, 0xf4, 0x2a, 0xa2, 0x6a, 0xa6, 0x3a, 0xb2, 0x7a, 0xb6, 0x2e, 0xe2, 0x6e, 0xe6, 0x3e, 0xf2, 0x7e, 0xf6, 0xa8, 0xa8, 0xe8, 0xac, 0xb8, 0xb8, 0xf8, 0xbc, 0xac, 0xe8, 0xec, 0xec, 0xbc, 0xf8, 0xfc, 0xfc, 0xaa, 0xaa, 0xea, 0xae, 0xba, 0xba, 0xfa, 0xbe, 0xae, 0xea, 0xee, 0xee, 0xbe, 0xfa, 0xfe, 0xfe }; static const u8 rs[256] = { 0x00, 0x00, 0x80, 0x80, 0x02, 0x02, 0x82, 0x82, 0x04, 0x04, 0x84, 0x84, 0x06, 0x06, 0x86, 0x86, 0x08, 0x08, 0x88, 0x88, 0x0a, 0x0a, 0x8a, 0x8a, 0x0c, 0x0c, 0x8c, 0x8c, 0x0e, 0x0e, 0x8e, 0x8e, 0x10, 0x10, 0x90, 0x90, 0x12, 0x12, 0x92, 0x92, 0x14, 0x14, 0x94, 0x94, 0x16, 0x16, 0x96, 0x96, 0x18, 0x18, 0x98, 0x98, 0x1a, 0x1a, 0x9a, 0x9a, 0x1c, 0x1c, 0x9c, 0x9c, 0x1e, 0x1e, 0x9e, 0x9e, 0x20, 0x20, 0xa0, 0xa0, 0x22, 0x22, 0xa2, 0xa2, 0x24, 0x24, 0xa4, 0xa4, 0x26, 0x26, 0xa6, 0xa6, 0x28, 0x28, 0xa8, 0xa8, 0x2a, 0x2a, 0xaa, 0xaa, 0x2c, 0x2c, 0xac, 0xac, 0x2e, 0x2e, 0xae, 0xae, 0x30, 0x30, 0xb0, 0xb0, 0x32, 0x32, 0xb2, 0xb2, 0x34, 0x34, 0xb4, 0xb4, 0x36, 0x36, 0xb6, 0xb6, 0x38, 0x38, 0xb8, 0xb8, 0x3a, 0x3a, 0xba, 0xba, 0x3c, 0x3c, 0xbc, 0xbc, 0x3e, 0x3e, 0xbe, 0xbe, 0x40, 0x40, 0xc0, 0xc0, 0x42, 0x42, 0xc2, 0xc2, 0x44, 0x44, 0xc4, 0xc4, 0x46, 0x46, 0xc6, 0xc6, 0x48, 0x48, 0xc8, 0xc8, 0x4a, 0x4a, 0xca, 0xca, 0x4c, 0x4c, 0xcc, 0xcc, 0x4e, 0x4e, 0xce, 0xce, 0x50, 0x50, 0xd0, 0xd0, 0x52, 0x52, 0xd2, 0xd2, 0x54, 0x54, 0xd4, 0xd4, 0x56, 0x56, 0xd6, 0xd6, 0x58, 0x58, 0xd8, 0xd8, 0x5a, 0x5a, 0xda, 0xda, 0x5c, 0x5c, 0xdc, 0xdc, 0x5e, 0x5e, 0xde, 0xde, 0x60, 0x60, 0xe0, 0xe0, 0x62, 0x62, 0xe2, 0xe2, 0x64, 0x64, 0xe4, 0xe4, 0x66, 0x66, 0xe6, 0xe6, 0x68, 0x68, 0xe8, 0xe8, 0x6a, 0x6a, 0xea, 0xea, 0x6c, 0x6c, 0xec, 0xec, 0x6e, 0x6e, 0xee, 0xee, 0x70, 0x70, 0xf0, 0xf0, 0x72, 0x72, 0xf2, 0xf2, 0x74, 0x74, 0xf4, 0xf4, 0x76, 0x76, 0xf6, 0xf6, 0x78, 0x78, 0xf8, 0xf8, 0x7a, 0x7a, 0xfa, 0xfa, 0x7c, 0x7c, 0xfc, 0xfc, 0x7e, 0x7e, 0xfe, 0xfe }; static const u32 pc2[1024] = { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00040000, 0x00000000, 0x04000000, 0x00100000, 0x00400000, 0x00000008, 0x00000800, 0x40000000, 0x00440000, 0x00000008, 0x04000800, 0x40100000, 0x00000400, 0x00000020, 0x08000000, 0x00000100, 0x00040400, 0x00000020, 0x0c000000, 0x00100100, 0x00400400, 0x00000028, 0x08000800, 0x40000100, 0x00440400, 0x00000028, 0x0c000800, 0x40100100, 0x80000000, 0x00000010, 0x00000000, 0x00800000, 0x80040000, 0x00000010, 0x04000000, 0x00900000, 0x80400000, 0x00000018, 0x00000800, 0x40800000, 0x80440000, 0x00000018, 0x04000800, 0x40900000, 0x80000400, 0x00000030, 0x08000000, 0x00800100, 0x80040400, 0x00000030, 0x0c000000, 0x00900100, 0x80400400, 0x00000038, 0x08000800, 0x40800100, 0x80440400, 0x00000038, 0x0c000800, 0x40900100, 0x10000000, 0x00000000, 0x00200000, 0x00001000, 0x10040000, 0x00000000, 0x04200000, 0x00101000, 0x10400000, 0x00000008, 0x00200800, 0x40001000, 0x10440000, 0x00000008, 0x04200800, 0x40101000, 0x10000400, 0x00000020, 0x08200000, 0x00001100, 0x10040400, 0x00000020, 0x0c200000, 0x00101100, 0x10400400, 0x00000028, 0x08200800, 0x40001100, 0x10440400, 0x00000028, 0x0c200800, 0x40101100, 0x90000000, 0x00000010, 0x00200000, 0x00801000, 0x90040000, 0x00000010, 0x04200000, 0x00901000, 0x90400000, 0x00000018, 0x00200800, 0x40801000, 0x90440000, 0x00000018, 0x04200800, 0x40901000, 0x90000400, 0x00000030, 0x08200000, 0x00801100, 0x90040400, 0x00000030, 0x0c200000, 0x00901100, 0x90400400, 0x00000038, 0x08200800, 0x40801100, 0x90440400, 0x00000038, 0x0c200800, 0x40901100, 0x00000200, 0x00080000, 0x00000000, 0x00000004, 0x00040200, 0x00080000, 0x04000000, 0x00100004, 0x00400200, 0x00080008, 0x00000800, 0x40000004, 0x00440200, 0x00080008, 0x04000800, 0x40100004, 0x00000600, 0x00080020, 0x08000000, 0x00000104, 0x00040600, 0x00080020, 0x0c000000, 0x00100104, 0x00400600, 0x00080028, 0x08000800, 0x40000104, 0x00440600, 0x00080028, 0x0c000800, 0x40100104, 0x80000200, 0x00080010, 0x00000000, 0x00800004, 0x80040200, 0x00080010, 0x04000000, 0x00900004, 0x80400200, 0x00080018, 0x00000800, 0x40800004, 0x80440200, 0x00080018, 0x04000800, 0x40900004, 0x80000600, 0x00080030, 0x08000000, 0x00800104, 0x80040600, 0x00080030, 0x0c000000, 0x00900104, 0x80400600, 0x00080038, 0x08000800, 0x40800104, 0x80440600, 0x00080038, 0x0c000800, 0x40900104, 0x10000200, 0x00080000, 0x00200000, 0x00001004, 0x10040200, 0x00080000, 0x04200000, 0x00101004, 0x10400200, 0x00080008, 0x00200800, 0x40001004, 0x10440200, 0x00080008, 0x04200800, 0x40101004, 0x10000600, 0x00080020, 0x08200000, 0x00001104, 0x10040600, 0x00080020, 0x0c200000, 0x00101104, 0x10400600, 0x00080028, 0x08200800, 0x40001104, 0x10440600, 0x00080028, 0x0c200800, 0x40101104, 0x90000200, 0x00080010, 0x00200000, 0x00801004, 0x90040200, 0x00080010, 0x04200000, 0x00901004, 0x90400200, 0x00080018, 0x00200800, 0x40801004, 0x90440200, 0x00080018, 0x04200800, 0x40901004, 0x90000600, 0x00080030, 0x08200000, 0x00801104, 0x90040600, 0x00080030, 0x0c200000, 0x00901104, 0x90400600, 0x00080038, 0x08200800, 0x40801104, 0x90440600, 0x00080038, 0x0c200800, 0x40901104, 0x00000002, 0x00002000, 0x20000000, 0x00000001, 0x00040002, 0x00002000, 0x24000000, 0x00100001, 0x00400002, 0x00002008, 0x20000800, 0x40000001, 0x00440002, 0x00002008, 0x24000800, 0x40100001, 0x00000402, 0x00002020, 0x28000000, 0x00000101, 0x00040402, 0x00002020, 0x2c000000, 0x00100101, 0x00400402, 0x00002028, 0x28000800, 0x40000101, 0x00440402, 0x00002028, 0x2c000800, 0x40100101, 0x80000002, 0x00002010, 0x20000000, 0x00800001, 0x80040002, 0x00002010, 0x24000000, 0x00900001, 0x80400002, 0x00002018, 0x20000800, 0x40800001, 0x80440002, 0x00002018, 0x24000800, 0x40900001, 0x80000402, 0x00002030, 0x28000000, 0x00800101, 0x80040402, 0x00002030, 0x2c000000, 0x00900101, 0x80400402, 0x00002038, 0x28000800, 0x40800101, 0x80440402, 0x00002038, 0x2c000800, 0x40900101, 0x10000002, 0x00002000, 0x20200000, 0x00001001, 0x10040002, 0x00002000, 0x24200000, 0x00101001, 0x10400002, 0x00002008, 0x20200800, 0x40001001, 0x10440002, 0x00002008, 0x24200800, 0x40101001, 0x10000402, 0x00002020, 0x28200000, 0x00001101, 0x10040402, 0x00002020, 0x2c200000, 0x00101101, 0x10400402, 0x00002028, 0x28200800, 0x40001101, 0x10440402, 0x00002028, 0x2c200800, 0x40101101, 0x90000002, 0x00002010, 0x20200000, 0x00801001, 0x90040002, 0x00002010, 0x24200000, 0x00901001, 0x90400002, 0x00002018, 0x20200800, 0x40801001, 0x90440002, 0x00002018, 0x24200800, 0x40901001, 0x90000402, 0x00002030, 0x28200000, 0x00801101, 0x90040402, 0x00002030, 0x2c200000, 0x00901101, 0x90400402, 0x00002038, 0x28200800, 0x40801101, 0x90440402, 0x00002038, 0x2c200800, 0x40901101, 0x00000202, 0x00082000, 0x20000000, 0x00000005, 0x00040202, 0x00082000, 0x24000000, 0x00100005, 0x00400202, 0x00082008, 0x20000800, 0x40000005, 0x00440202, 0x00082008, 0x24000800, 0x40100005, 0x00000602, 0x00082020, 0x28000000, 0x00000105, 0x00040602, 0x00082020, 0x2c000000, 0x00100105, 0x00400602, 0x00082028, 0x28000800, 0x40000105, 0x00440602, 0x00082028, 0x2c000800, 0x40100105, 0x80000202, 0x00082010, 0x20000000, 0x00800005, 0x80040202, 0x00082010, 0x24000000, 0x00900005, 0x80400202, 0x00082018, 0x20000800, 0x40800005, 0x80440202, 0x00082018, 0x24000800, 0x40900005, 0x80000602, 0x00082030, 0x28000000, 0x00800105, 0x80040602, 0x00082030, 0x2c000000, 0x00900105, 0x80400602, 0x00082038, 0x28000800, 0x40800105, 0x80440602, 0x00082038, 0x2c000800, 0x40900105, 0x10000202, 0x00082000, 0x20200000, 0x00001005, 0x10040202, 0x00082000, 0x24200000, 0x00101005, 0x10400202, 0x00082008, 0x20200800, 0x40001005, 0x10440202, 0x00082008, 0x24200800, 0x40101005, 0x10000602, 0x00082020, 0x28200000, 0x00001105, 0x10040602, 0x00082020, 0x2c200000, 0x00101105, 0x10400602, 0x00082028, 0x28200800, 0x40001105, 0x10440602, 0x00082028, 0x2c200800, 0x40101105, 0x90000202, 0x00082010, 0x20200000, 0x00801005, 0x90040202, 0x00082010, 0x24200000, 0x00901005, 0x90400202, 0x00082018, 0x20200800, 0x40801005, 0x90440202, 0x00082018, 0x24200800, 0x40901005, 0x90000602, 0x00082030, 0x28200000, 0x00801105, 0x90040602, 0x00082030, 0x2c200000, 0x00901105, 0x90400602, 0x00082038, 0x28200800, 0x40801105, 0x90440602, 0x00082038, 0x2c200800, 0x40901105, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000008, 0x00080000, 0x10000000, 0x02000000, 0x00000000, 0x00000080, 0x00001000, 0x02000000, 0x00000008, 0x00080080, 0x10001000, 0x00004000, 0x00000000, 0x00000040, 0x00040000, 0x00004000, 0x00000008, 0x00080040, 0x10040000, 0x02004000, 0x00000000, 0x000000c0, 0x00041000, 0x02004000, 0x00000008, 0x000800c0, 0x10041000, 0x00020000, 0x00008000, 0x08000000, 0x00200000, 0x00020000, 0x00008008, 0x08080000, 0x10200000, 0x02020000, 0x00008000, 0x08000080, 0x00201000, 0x02020000, 0x00008008, 0x08080080, 0x10201000, 0x00024000, 0x00008000, 0x08000040, 0x00240000, 0x00024000, 0x00008008, 0x08080040, 0x10240000, 0x02024000, 0x00008000, 0x080000c0, 0x00241000, 0x02024000, 0x00008008, 0x080800c0, 0x10241000, 0x00000000, 0x01000000, 0x00002000, 0x00000020, 0x00000000, 0x01000008, 0x00082000, 0x10000020, 0x02000000, 0x01000000, 0x00002080, 0x00001020, 0x02000000, 0x01000008, 0x00082080, 0x10001020, 0x00004000, 0x01000000, 0x00002040, 0x00040020, 0x00004000, 0x01000008, 0x00082040, 0x10040020, 0x02004000, 0x01000000, 0x000020c0, 0x00041020, 0x02004000, 0x01000008, 0x000820c0, 0x10041020, 0x00020000, 0x01008000, 0x08002000, 0x00200020, 0x00020000, 0x01008008, 0x08082000, 0x10200020, 0x02020000, 0x01008000, 0x08002080, 0x00201020, 0x02020000, 0x01008008, 0x08082080, 0x10201020, 0x00024000, 0x01008000, 0x08002040, 0x00240020, 0x00024000, 0x01008008, 0x08082040, 0x10240020, 0x02024000, 0x01008000, 0x080020c0, 0x00241020, 0x02024000, 0x01008008, 0x080820c0, 0x10241020, 0x00000400, 0x04000000, 0x00100000, 0x00000004, 0x00000400, 0x04000008, 0x00180000, 0x10000004, 0x02000400, 0x04000000, 0x00100080, 0x00001004, 0x02000400, 0x04000008, 0x00180080, 0x10001004, 0x00004400, 0x04000000, 0x00100040, 0x00040004, 0x00004400, 0x04000008, 0x00180040, 0x10040004, 0x02004400, 0x04000000, 0x001000c0, 0x00041004, 0x02004400, 0x04000008, 0x001800c0, 0x10041004, 0x00020400, 0x04008000, 0x08100000, 0x00200004, 0x00020400, 0x04008008, 0x08180000, 0x10200004, 0x02020400, 0x04008000, 0x08100080, 0x00201004, 0x02020400, 0x04008008, 0x08180080, 0x10201004, 0x00024400, 0x04008000, 0x08100040, 0x00240004, 0x00024400, 0x04008008, 0x08180040, 0x10240004, 0x02024400, 0x04008000, 0x081000c0, 0x00241004, 0x02024400, 0x04008008, 0x081800c0, 0x10241004, 0x00000400, 0x05000000, 0x00102000, 0x00000024, 0x00000400, 0x05000008, 0x00182000, 0x10000024, 0x02000400, 0x05000000, 0x00102080, 0x00001024, 0x02000400, 0x05000008, 0x00182080, 0x10001024, 0x00004400, 0x05000000, 0x00102040, 0x00040024, 0x00004400, 0x05000008, 0x00182040, 0x10040024, 0x02004400, 0x05000000, 0x001020c0, 0x00041024, 0x02004400, 0x05000008, 0x001820c0, 0x10041024, 0x00020400, 0x05008000, 0x08102000, 0x00200024, 0x00020400, 0x05008008, 0x08182000, 0x10200024, 0x02020400, 0x05008000, 0x08102080, 0x00201024, 0x02020400, 0x05008008, 0x08182080, 0x10201024, 0x00024400, 0x05008000, 0x08102040, 0x00240024, 0x00024400, 0x05008008, 0x08182040, 0x10240024, 0x02024400, 0x05008000, 0x081020c0, 0x00241024, 0x02024400, 0x05008008, 0x081820c0, 0x10241024, 0x00000800, 0x00010000, 0x20000000, 0x00000010, 0x00000800, 0x00010008, 0x20080000, 0x10000010, 0x02000800, 0x00010000, 0x20000080, 0x00001010, 0x02000800, 0x00010008, 0x20080080, 0x10001010, 0x00004800, 0x00010000, 0x20000040, 0x00040010, 0x00004800, 0x00010008, 0x20080040, 0x10040010, 0x02004800, 0x00010000, 0x200000c0, 0x00041010, 0x02004800, 0x00010008, 0x200800c0, 0x10041010, 0x00020800, 0x00018000, 0x28000000, 0x00200010, 0x00020800, 0x00018008, 0x28080000, 0x10200010, 0x02020800, 0x00018000, 0x28000080, 0x00201010, 0x02020800, 0x00018008, 0x28080080, 0x10201010, 0x00024800, 0x00018000, 0x28000040, 0x00240010, 0x00024800, 0x00018008, 0x28080040, 0x10240010, 0x02024800, 0x00018000, 0x280000c0, 0x00241010, 0x02024800, 0x00018008, 0x280800c0, 0x10241010, 0x00000800, 0x01010000, 0x20002000, 0x00000030, 0x00000800, 0x01010008, 0x20082000, 0x10000030, 0x02000800, 0x01010000, 0x20002080, 0x00001030, 0x02000800, 0x01010008, 0x20082080, 0x10001030, 0x00004800, 0x01010000, 0x20002040, 0x00040030, 0x00004800, 0x01010008, 0x20082040, 0x10040030, 0x02004800, 0x01010000, 0x200020c0, 0x00041030, 0x02004800, 0x01010008, 0x200820c0, 0x10041030, 0x00020800, 0x01018000, 0x28002000, 0x00200030, 0x00020800, 0x01018008, 0x28082000, 0x10200030, 0x02020800, 0x01018000, 0x28002080, 0x00201030, 0x02020800, 0x01018008, 0x28082080, 0x10201030, 0x00024800, 0x01018000, 0x28002040, 0x00240030, 0x00024800, 0x01018008, 0x28082040, 0x10240030, 0x02024800, 0x01018000, 0x280020c0, 0x00241030, 0x02024800, 0x01018008, 0x280820c0, 0x10241030, 0x00000c00, 0x04010000, 0x20100000, 0x00000014, 0x00000c00, 0x04010008, 0x20180000, 0x10000014, 0x02000c00, 0x04010000, 0x20100080, 0x00001014, 0x02000c00, 0x04010008, 0x20180080, 0x10001014, 0x00004c00, 0x04010000, 0x20100040, 0x00040014, 0x00004c00, 0x04010008, 0x20180040, 0x10040014, 0x02004c00, 0x04010000, 0x201000c0, 0x00041014, 0x02004c00, 0x04010008, 0x201800c0, 0x10041014, 0x00020c00, 0x04018000, 0x28100000, 0x00200014, 0x00020c00, 0x04018008, 0x28180000, 0x10200014, 0x02020c00, 0x04018000, 0x28100080, 0x00201014, 0x02020c00, 0x04018008, 0x28180080, 0x10201014, 0x00024c00, 0x04018000, 0x28100040, 0x00240014, 0x00024c00, 0x04018008, 0x28180040, 0x10240014, 0x02024c00, 0x04018000, 0x281000c0, 0x00241014, 0x02024c00, 0x04018008, 0x281800c0, 0x10241014, 0x00000c00, 0x05010000, 0x20102000, 0x00000034, 0x00000c00, 0x05010008, 0x20182000, 0x10000034, 0x02000c00, 0x05010000, 0x20102080, 0x00001034, 0x02000c00, 0x05010008, 0x20182080, 0x10001034, 0x00004c00, 0x05010000, 0x20102040, 0x00040034, 0x00004c00, 0x05010008, 0x20182040, 0x10040034, 0x02004c00, 0x05010000, 0x201020c0, 0x00041034, 0x02004c00, 0x05010008, 0x201820c0, 0x10041034, 0x00020c00, 0x05018000, 0x28102000, 0x00200034, 0x00020c00, 0x05018008, 0x28182000, 0x10200034, 0x02020c00, 0x05018000, 0x28102080, 0x00201034, 0x02020c00, 0x05018008, 0x28182080, 0x10201034, 0x00024c00, 0x05018000, 0x28102040, 0x00240034, 0x00024c00, 0x05018008, 0x28182040, 0x10240034, 0x02024c00, 0x05018000, 0x281020c0, 0x00241034, 0x02024c00, 0x05018008, 0x281820c0, 0x10241034 }; /* S-box lookup tables */ static const u32 S1[64] = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004, 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004, 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404, 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004, 0x00010400, 0x00000000, 0x01010004 }; static const u32 S2[64] = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020, 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020, 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000, 0x80100020, 0x80108020, 0x00108000 }; static const u32 S3[64] = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208, 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208, 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000, 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208, 0x00000008, 0x08020008, 0x00020200 }; static const u32 S4[64] = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001, 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001, 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002000, 0x00802080 }; static const u32 S5[64] = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000, 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000, 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100, 0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000, 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100, 0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000, 0x40080000, 0x02080100, 0x40000100 }; static const u32 S6[64] = { 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010, 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010, 0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010, 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010, 0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000, 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010, 0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000, 0x20000000, 0x00400010, 0x20004010 }; static const u32 S7[64] = { 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802, 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802, 0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000, 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800, 0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800, 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000, 0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002, 0x04000800, 0x00000800, 0x00200002 }; static const u32 S8[64] = { 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040, 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040, 0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000, 0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040, 0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040, 0x00040040, 0x10000000, 0x10041000 }; /* Encryption components: IP, FP, and round function */ #define IP(L, R, T) \ ROL(R, 4); \ T = L; \ L ^= R; \ L &= 0xf0f0f0f0; \ R ^= L; \ L ^= T; \ ROL(R, 12); \ T = L; \ L ^= R; \ L &= 0xffff0000; \ R ^= L; \ L ^= T; \ ROR(R, 14); \ T = L; \ L ^= R; \ L &= 0xcccccccc; \ R ^= L; \ L ^= T; \ ROL(R, 6); \ T = L; \ L ^= R; \ L &= 0xff00ff00; \ R ^= L; \ L ^= T; \ ROR(R, 7); \ T = L; \ L ^= R; \ L &= 0xaaaaaaaa; \ R ^= L; \ L ^= T; \ ROL(L, 1); #define FP(L, R, T) \ ROR(L, 1); \ T = L; \ L ^= R; \ L &= 0xaaaaaaaa; \ R ^= L; \ L ^= T; \ ROL(R, 7); \ T = L; \ L ^= R; \ L &= 0xff00ff00; \ R ^= L; \ L ^= T; \ ROR(R, 6); \ T = L; \ L ^= R; \ L &= 0xcccccccc; \ R ^= L; \ L ^= T; \ ROL(R, 14); \ T = L; \ L ^= R; \ L &= 0xffff0000; \ R ^= L; \ L ^= T; \ ROR(R, 12); \ T = L; \ L ^= R; \ L &= 0xf0f0f0f0; \ R ^= L; \ L ^= T; \ ROR(R, 4); #define ROUND(L, R, A, B, K, d) \ B = K[0]; A = K[1]; K += d; \ B ^= R; A ^= R; \ B &= 0x3f3f3f3f; ROR(A, 4); \ L ^= S8[0xff & B]; A &= 0x3f3f3f3f; \ L ^= S6[0xff & (B >> 8)]; B >>= 16; \ L ^= S7[0xff & A]; \ L ^= S5[0xff & (A >> 8)]; A >>= 16; \ L ^= S4[0xff & B]; \ L ^= S2[0xff & (B >> 8)]; \ L ^= S3[0xff & A]; \ L ^= S1[0xff & (A >> 8)]; /* * PC2 lookup tables are organized as 2 consecutive sets of 4 interleaved * tables of 128 elements. One set is for C_i and the other for D_i, while * the 4 interleaved tables correspond to four 7-bit subsets of C_i or D_i. * * After PC1 each of the variables a,b,c,d contains a 7 bit subset of C_i * or D_i in bits 7-1 (bit 0 being the least significant). */ #define T1(x) pt[2 * (x) + 0] #define T2(x) pt[2 * (x) + 1] #define T3(x) pt[2 * (x) + 2] #define T4(x) pt[2 * (x) + 3] #define DES_PC2(a, b, c, d) (T4(d) | T3(c) | T2(b) | T1(a)) /* * Encryption key expansion * * RFC2451: Weak key checks SHOULD be performed. * * FIPS 74: * * Keys having duals are keys which produce all zeros, all ones, or * alternating zero-one patterns in the C and D registers after Permuted * Choice 1 has operated on the key. * */ static unsigned long des_ekey(u32 *pe, const u8 *k) { /* K&R: long is at least 32 bits */ unsigned long a, b, c, d, w; const u32 *pt = pc2; d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d]; c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c]; b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; pe[15 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; pe[14 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[13 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[12 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[11 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[10 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 9 * 2 + 0] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 8 * 2 + 0] = DES_PC2(d, a, b, c); c = rs[c]; pe[ 7 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 6 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 5 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 4 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 3 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 2 * 2 + 0] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 1 * 2 + 0] = DES_PC2(c, d, a, b); b = rs[b]; pe[ 0 * 2 + 0] = DES_PC2(b, c, d, a); /* Check if first half is weak */ w = (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); /* Skip to next table set */ pt += 512; d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1]; c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1]; b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1]; a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1]; /* Check if second half is weak */ w |= (a ^ c) | (b ^ d) | (rs[a] ^ c) | (b ^ rs[d]); pe[15 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; pe[14 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[13 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[12 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[11 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[10 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 9 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 8 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; pe[ 7 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 6 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 5 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 4 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 3 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 2 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[ 1 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; pe[ 0 * 2 + 1] = DES_PC2(b, c, d, a); /* Fixup: 2413 5768 -> 1357 2468 */ for (d = 0; d < 16; ++d) { a = pe[2 * d]; b = pe[2 * d + 1]; c = a ^ b; c &= 0xffff0000; a ^= c; b ^= c; ROL(b, 18); pe[2 * d] = a; pe[2 * d + 1] = b; } /* Zero if weak key */ return w; } int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen) { if (keylen != DES_KEY_SIZE) return -EINVAL; return des_ekey(ctx->expkey, key) ? 0 : -ENOKEY; } EXPORT_SYMBOL_GPL(des_expand_key); /* * Decryption key expansion * * No weak key checking is performed, as this is only used by triple DES * */ static void dkey(u32 *pe, const u8 *k) { /* K&R: long is at least 32 bits */ unsigned long a, b, c, d; const u32 *pt = pc2; d = k[4]; d &= 0x0e; d <<= 4; d |= k[0] & 0x1e; d = pc1[d]; c = k[5]; c &= 0x0e; c <<= 4; c |= k[1] & 0x1e; c = pc1[c]; b = k[6]; b &= 0x0e; b <<= 4; b |= k[2] & 0x1e; b = pc1[b]; a = k[7]; a &= 0x0e; a <<= 4; a |= k[3] & 0x1e; a = pc1[a]; pe[ 0 * 2] = DES_PC2(a, b, c, d); d = rs[d]; pe[ 1 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 2 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 3 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 4 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 5 * 2] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 6 * 2] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 7 * 2] = DES_PC2(d, a, b, c); c = rs[c]; pe[ 8 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 9 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[10 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[11 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[12 * 2] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[13 * 2] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[14 * 2] = DES_PC2(c, d, a, b); b = rs[b]; pe[15 * 2] = DES_PC2(b, c, d, a); /* Skip to next table set */ pt += 512; d = k[0]; d &= 0xe0; d >>= 4; d |= k[4] & 0xf0; d = pc1[d + 1]; c = k[1]; c &= 0xe0; c >>= 4; c |= k[5] & 0xf0; c = pc1[c + 1]; b = k[2]; b &= 0xe0; b >>= 4; b |= k[6] & 0xf0; b = pc1[b + 1]; a = k[3]; a &= 0xe0; a >>= 4; a |= k[7] & 0xf0; a = pc1[a + 1]; pe[ 0 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; pe[ 1 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 2 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 3 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 4 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 5 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; b = rs[b]; pe[ 6 * 2 + 1] = DES_PC2(b, c, d, a); a = rs[a]; d = rs[d]; pe[ 7 * 2 + 1] = DES_PC2(d, a, b, c); c = rs[c]; pe[ 8 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[ 9 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[10 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[11 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[12 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; a = rs[a]; pe[13 * 2 + 1] = DES_PC2(a, b, c, d); d = rs[d]; c = rs[c]; pe[14 * 2 + 1] = DES_PC2(c, d, a, b); b = rs[b]; pe[15 * 2 + 1] = DES_PC2(b, c, d, a); /* Fixup: 2413 5768 -> 1357 2468 */ for (d = 0; d < 16; ++d) { a = pe[2 * d]; b = pe[2 * d + 1]; c = a ^ b; c &= 0xffff0000; a ^= c; b ^= c; ROL(b, 18); pe[2 * d] = a; pe[2 * d + 1] = b; } } void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src) { const u32 *K = ctx->expkey; u32 L, R, A, B; int i; L = get_unaligned_le32(src); R = get_unaligned_le32(src + 4); IP(L, R, A); for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, 2); ROUND(R, L, A, B, K, 2); } FP(R, L, A); put_unaligned_le32(R, dst); put_unaligned_le32(L, dst + 4); } EXPORT_SYMBOL_GPL(des_encrypt); void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src) { const u32 *K = ctx->expkey + DES_EXPKEY_WORDS - 2; u32 L, R, A, B; int i; L = get_unaligned_le32(src); R = get_unaligned_le32(src + 4); IP(L, R, A); for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, -2); ROUND(R, L, A, B, K, -2); } FP(R, L, A); put_unaligned_le32(R, dst); put_unaligned_le32(L, dst + 4); } EXPORT_SYMBOL_GPL(des_decrypt); int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key, unsigned int keylen) { u32 *pe = ctx->expkey; int err; if (keylen != DES3_EDE_KEY_SIZE) return -EINVAL; err = des3_ede_verify_key(key, keylen, true); if (err && err != -ENOKEY) return err; des_ekey(pe, key); pe += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; dkey(pe, key); pe += DES_EXPKEY_WORDS; key += DES_KEY_SIZE; des_ekey(pe, key); return err; } EXPORT_SYMBOL_GPL(des3_ede_expand_key); void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src) { const u32 *K = dctx->expkey; u32 L, R, A, B; int i; L = get_unaligned_le32(src); R = get_unaligned_le32(src + 4); IP(L, R, A); for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, 2); ROUND(R, L, A, B, K, 2); } for (i = 0; i < 8; i++) { ROUND(R, L, A, B, K, 2); ROUND(L, R, A, B, K, 2); } for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, 2); ROUND(R, L, A, B, K, 2); } FP(R, L, A); put_unaligned_le32(R, dst); put_unaligned_le32(L, dst + 4); } EXPORT_SYMBOL_GPL(des3_ede_encrypt); void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src) { const u32 *K = dctx->expkey + DES3_EDE_EXPKEY_WORDS - 2; u32 L, R, A, B; int i; L = get_unaligned_le32(src); R = get_unaligned_le32(src + 4); IP(L, R, A); for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, -2); ROUND(R, L, A, B, K, -2); } for (i = 0; i < 8; i++) { ROUND(R, L, A, B, K, -2); ROUND(L, R, A, B, K, -2); } for (i = 0; i < 8; i++) { ROUND(L, R, A, B, K, -2); ROUND(R, L, A, B, K, -2); } FP(R, L, A); put_unaligned_le32(R, dst); put_unaligned_le32(L, dst + 4); } EXPORT_SYMBOL_GPL(des3_ede_decrypt); MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); MODULE_LICENSE("GPL"); |
| 9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* SPDX-License-Identifier: GPL-2.0-or-later */ /* * OSS compatible sequencer driver * * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> */ #ifndef __SEQ_OSS_DEVICE_H #define __SEQ_OSS_DEVICE_H #include <linux/time.h> #include <linux/wait.h> #include <linux/slab.h> #include <linux/sched/signal.h> #include <sound/core.h> #include <sound/seq_oss.h> #include <sound/rawmidi.h> #include <sound/seq_kernel.h> #include <sound/info.h> #include "../seq_clientmgr.h" /* max. applications */ #define SNDRV_SEQ_OSS_MAX_CLIENTS 16 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS 16 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS 32 /* version */ #define SNDRV_SEQ_OSS_MAJOR_VERSION 0 #define SNDRV_SEQ_OSS_MINOR_VERSION 1 #define SNDRV_SEQ_OSS_TINY_VERSION 8 #define SNDRV_SEQ_OSS_VERSION_STR "0.1.8" /* device and proc interface name */ #define SNDRV_SEQ_OSS_PROCNAME "oss" /* * type definitions */ typedef unsigned int reltime_t; typedef unsigned int abstime_t; /* * synthesizer channel information */ struct seq_oss_chinfo { int note, vel; }; /* * synthesizer information */ struct seq_oss_synthinfo { struct snd_seq_oss_arg arg; struct seq_oss_chinfo *ch; int nr_voices; int opened; int is_midi; int midi_mapped; }; /* * sequencer client information */ struct seq_oss_devinfo { int index; /* application index */ int cseq; /* sequencer client number */ int port; /* sequencer port number */ int queue; /* sequencer queue number */ struct snd_seq_addr addr; /* address of this device */ int seq_mode; /* sequencer mode */ int file_mode; /* file access */ /* midi device table */ int max_mididev; /* synth device table */ int max_synthdev; struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS]; int synth_opened; /* output queue */ struct seq_oss_writeq *writeq; /* midi input queue */ struct seq_oss_readq *readq; /* timer */ struct seq_oss_timer *timer; }; /* * function prototypes */ /* create/delete OSS sequencer client */ int snd_seq_oss_create_client(void); int snd_seq_oss_delete_client(void); /* device file interface */ int snd_seq_oss_open(struct file *file, int level); void snd_seq_oss_release(struct seq_oss_devinfo *dp); int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg); int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count); int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt); __poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait); void snd_seq_oss_reset(struct seq_oss_devinfo *dp); /* proc interface */ void snd_seq_oss_system_info_read(struct snd_info_buffer *buf); void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf); void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf); void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf); /* file mode macros */ #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ) #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE) #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK) /* dispatch event */ static inline int snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop) { return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop); } /* ioctl for writeq */ static inline int snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg) { return snd_seq_kernel_client_ioctl(dp->cseq, type, arg); } /* fill the addresses in header */ static inline void snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int dest_client, int dest_port) { ev->queue = dp->queue; ev->source = dp->addr; ev->dest.client = dest_client; ev->dest.port = dest_port; } #endif /* __SEQ_OSS_DEVICE_H */ |
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1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 | // SPDX-License-Identifier: GPL-2.0 /* * main.c - Multi purpose firmware loading support * * Copyright (c) 2003 Manuel Estrada Sainz * * Please see Documentation/driver-api/firmware/ for more information. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/capability.h> #include <linux/device.h> #include <linux/kernel_read_file.h> #include <linux/module.h> #include <linux/init.h> #include <linux/initrd.h> #include <linux/timer.h> #include <linux/vmalloc.h> #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/mutex.h> #include <linux/workqueue.h> #include <linux/highmem.h> #include <linux/firmware.h> #include <linux/slab.h> #include <linux/sched.h> #include <linux/file.h> #include <linux/list.h> #include <linux/fs.h> #include <linux/async.h> #include <linux/pm.h> #include <linux/suspend.h> #include <linux/syscore_ops.h> #include <linux/reboot.h> #include <linux/security.h> #include <linux/zstd.h> #include <linux/xz.h> #include <generated/utsrelease.h> #include "../base.h" #include "firmware.h" #include "fallback.h" MODULE_AUTHOR("Manuel Estrada Sainz"); MODULE_DESCRIPTION("Multi purpose firmware loading support"); MODULE_LICENSE("GPL"); struct firmware_cache { /* firmware_buf instance will be added into the below list */ spinlock_t lock; struct list_head head; int state; #ifdef CONFIG_FW_CACHE /* * Names of firmware images which have been cached successfully * will be added into the below list so that device uncache * helper can trace which firmware images have been cached * before. */ spinlock_t name_lock; struct list_head fw_names; struct delayed_work work; struct notifier_block pm_notify; #endif }; struct fw_cache_entry { struct list_head list; const char *name; }; struct fw_name_devm { unsigned long magic; const char *name; }; static inline struct fw_priv *to_fw_priv(struct kref *ref) { return container_of(ref, struct fw_priv, ref); } #define FW_LOADER_NO_CACHE 0 #define FW_LOADER_START_CACHE 1 /* fw_lock could be moved to 'struct fw_sysfs' but since it is just * guarding for corner cases a global lock should be OK */ DEFINE_MUTEX(fw_lock); struct firmware_cache fw_cache; bool fw_load_abort_all; void fw_state_init(struct fw_priv *fw_priv) { struct fw_state *fw_st = &fw_priv->fw_st; init_completion(&fw_st->completion); fw_st->status = FW_STATUS_UNKNOWN; } static inline int fw_state_wait(struct fw_priv *fw_priv) { return __fw_state_wait_common(fw_priv, MAX_SCHEDULE_TIMEOUT); } static void fw_cache_piggyback_on_request(struct fw_priv *fw_priv); static struct fw_priv *__allocate_fw_priv(const char *fw_name, struct firmware_cache *fwc, void *dbuf, size_t size, size_t offset, u32 opt_flags) { struct fw_priv *fw_priv; /* For a partial read, the buffer must be preallocated. */ if ((opt_flags & FW_OPT_PARTIAL) && !dbuf) return NULL; /* Only partial reads are allowed to use an offset. */ if (offset != 0 && !(opt_flags & FW_OPT_PARTIAL)) return NULL; fw_priv = kzalloc_obj(*fw_priv, GFP_ATOMIC); if (!fw_priv) return NULL; fw_priv->fw_name = kstrdup_const(fw_name, GFP_ATOMIC); if (!fw_priv->fw_name) { kfree(fw_priv); return NULL; } kref_init(&fw_priv->ref); fw_priv->fwc = fwc; fw_priv->data = dbuf; fw_priv->allocated_size = size; fw_priv->offset = offset; fw_priv->opt_flags = opt_flags; fw_state_init(fw_priv); #ifdef CONFIG_FW_LOADER_USER_HELPER INIT_LIST_HEAD(&fw_priv->pending_list); #endif pr_debug("%s: fw-%s fw_priv=%p\n", __func__, fw_name, fw_priv); return fw_priv; } static struct fw_priv *__lookup_fw_priv(const char *fw_name) { struct fw_priv *tmp; struct firmware_cache *fwc = &fw_cache; list_for_each_entry(tmp, &fwc->head, list) if (!strcmp(tmp->fw_name, fw_name)) return tmp; return NULL; } /* Returns 1 for batching firmware requests with the same name */ int alloc_lookup_fw_priv(const char *fw_name, struct firmware_cache *fwc, struct fw_priv **fw_priv, void *dbuf, size_t size, size_t offset, u32 opt_flags) { struct fw_priv *tmp; spin_lock(&fwc->lock); /* * Do not merge requests that are marked to be non-cached or * are performing partial reads. */ if (!(opt_flags & (FW_OPT_NOCACHE | FW_OPT_PARTIAL))) { tmp = __lookup_fw_priv(fw_name); if (tmp) { kref_get(&tmp->ref); spin_unlock(&fwc->lock); *fw_priv = tmp; pr_debug("batched request - sharing the same struct fw_priv and lookup for multiple requests\n"); return 1; } } tmp = __allocate_fw_priv(fw_name, fwc, dbuf, size, offset, opt_flags); if (tmp) { INIT_LIST_HEAD(&tmp->list); if (!(opt_flags & FW_OPT_NOCACHE)) list_add(&tmp->list, &fwc->head); } spin_unlock(&fwc->lock); *fw_priv = tmp; return tmp ? 0 : -ENOMEM; } static void __free_fw_priv(struct kref *ref) __releases(&fwc->lock) { struct fw_priv *fw_priv = to_fw_priv(ref); struct firmware_cache *fwc = fw_priv->fwc; pr_debug("%s: fw-%s fw_priv=%p data=%p size=%u\n", __func__, fw_priv->fw_name, fw_priv, fw_priv->data, (unsigned int)fw_priv->size); list_del(&fw_priv->list); spin_unlock(&fwc->lock); if (fw_is_paged_buf(fw_priv)) fw_free_paged_buf(fw_priv); else if (!fw_priv->allocated_size) vfree(fw_priv->data); kfree_const(fw_priv->fw_name); kfree(fw_priv); } void free_fw_priv(struct fw_priv *fw_priv) { struct firmware_cache *fwc = fw_priv->fwc; spin_lock(&fwc->lock); if (!kref_put(&fw_priv->ref, __free_fw_priv)) spin_unlock(&fwc->lock); } #ifdef CONFIG_FW_LOADER_PAGED_BUF bool fw_is_paged_buf(struct fw_priv *fw_priv) { return fw_priv->is_paged_buf; } void fw_free_paged_buf(struct fw_priv *fw_priv) { int i; if (!fw_priv->pages) return; vunmap(fw_priv->data); for (i = 0; i < fw_priv->nr_pages; i++) __free_page(fw_priv->pages[i]); kvfree(fw_priv->pages); fw_priv->pages = NULL; fw_priv->page_array_size = 0; fw_priv->nr_pages = 0; fw_priv->data = NULL; fw_priv->size = 0; } int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { /* If the array of pages is too small, grow it */ if (fw_priv->page_array_size < pages_needed) { int new_array_size = max(pages_needed, fw_priv->page_array_size * 2); struct page **new_pages; new_pages = kvmalloc_array(new_array_size, sizeof(void *), GFP_KERNEL); if (!new_pages) return -ENOMEM; memcpy(new_pages, fw_priv->pages, fw_priv->page_array_size * sizeof(void *)); memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) * (new_array_size - fw_priv->page_array_size)); kvfree(fw_priv->pages); fw_priv->pages = new_pages; fw_priv->page_array_size = new_array_size; } while (fw_priv->nr_pages < pages_needed) { fw_priv->pages[fw_priv->nr_pages] = alloc_page(GFP_KERNEL | __GFP_HIGHMEM); if (!fw_priv->pages[fw_priv->nr_pages]) return -ENOMEM; fw_priv->nr_pages++; } return 0; } int fw_map_paged_buf(struct fw_priv *fw_priv) { /* one pages buffer should be mapped/unmapped only once */ if (!fw_priv->pages) return 0; vunmap(fw_priv->data); fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0, PAGE_KERNEL_RO); if (!fw_priv->data) return -ENOMEM; return 0; } #endif /* * ZSTD-compressed firmware support */ #ifdef CONFIG_FW_LOADER_COMPRESS_ZSTD static int fw_decompress_zstd(struct device *dev, struct fw_priv *fw_priv, size_t in_size, const void *in_buffer) { size_t len, out_size, workspace_size; void *workspace, *out_buf; zstd_dctx *ctx; int err; if (fw_priv->allocated_size) { out_size = fw_priv->allocated_size; out_buf = fw_priv->data; } else { zstd_frame_header params; if (zstd_get_frame_header(¶ms, in_buffer, in_size) || params.frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN) { dev_dbg(dev, "%s: invalid zstd header\n", __func__); return -EINVAL; } out_size = params.frameContentSize; out_buf = vzalloc(out_size); if (!out_buf) return -ENOMEM; } workspace_size = zstd_dctx_workspace_bound(); workspace = kvzalloc(workspace_size, GFP_KERNEL); if (!workspace) { err = -ENOMEM; goto error; } ctx = zstd_init_dctx(workspace, workspace_size); if (!ctx) { dev_dbg(dev, "%s: failed to initialize context\n", __func__); err = -EINVAL; goto error; } len = zstd_decompress_dctx(ctx, out_buf, out_size, in_buffer, in_size); if (zstd_is_error(len)) { dev_dbg(dev, "%s: failed to decompress: %d\n", __func__, zstd_get_error_code(len)); err = -EINVAL; goto error; } if (!fw_priv->allocated_size) fw_priv->data = out_buf; fw_priv->size = len; err = 0; error: kvfree(workspace); if (err && !fw_priv->allocated_size) vfree(out_buf); return err; } #endif /* CONFIG_FW_LOADER_COMPRESS_ZSTD */ /* * XZ-compressed firmware support */ #ifdef CONFIG_FW_LOADER_COMPRESS_XZ /* show an error and return the standard error code */ static int fw_decompress_xz_error(struct device *dev, enum xz_ret xz_ret) { if (xz_ret != XZ_STREAM_END) { dev_warn(dev, "xz decompression failed (xz_ret=%d)\n", xz_ret); return xz_ret == XZ_MEM_ERROR ? -ENOMEM : -EINVAL; } return 0; } /* single-shot decompression onto the pre-allocated buffer */ static int fw_decompress_xz_single(struct device *dev, struct fw_priv *fw_priv, size_t in_size, const void *in_buffer) { struct xz_dec *xz_dec; struct xz_buf xz_buf; enum xz_ret xz_ret; xz_dec = xz_dec_init(XZ_SINGLE, (u32)-1); if (!xz_dec) return -ENOMEM; xz_buf.in_size = in_size; xz_buf.in = in_buffer; xz_buf.in_pos = 0; xz_buf.out_size = fw_priv->allocated_size; xz_buf.out = fw_priv->data; xz_buf.out_pos = 0; xz_ret = xz_dec_run(xz_dec, &xz_buf); xz_dec_end(xz_dec); fw_priv->size = xz_buf.out_pos; return fw_decompress_xz_error(dev, xz_ret); } /* decompression on paged buffer and map it */ static int fw_decompress_xz_pages(struct device *dev, struct fw_priv *fw_priv, size_t in_size, const void *in_buffer) { struct xz_dec *xz_dec; struct xz_buf xz_buf; enum xz_ret xz_ret; struct page *page; int err = 0; xz_dec = xz_dec_init(XZ_DYNALLOC, (u32)-1); if (!xz_dec) return -ENOMEM; xz_buf.in_size = in_size; xz_buf.in = in_buffer; xz_buf.in_pos = 0; fw_priv->is_paged_buf = true; fw_priv->size = 0; do { if (fw_grow_paged_buf(fw_priv, fw_priv->nr_pages + 1)) { err = -ENOMEM; goto out; } /* decompress onto the new allocated page */ page = fw_priv->pages[fw_priv->nr_pages - 1]; xz_buf.out = kmap_local_page(page); xz_buf.out_pos = 0; xz_buf.out_size = PAGE_SIZE; xz_ret = xz_dec_run(xz_dec, &xz_buf); kunmap_local(xz_buf.out); fw_priv->size += xz_buf.out_pos; /* partial decompression means either end or error */ if (xz_buf.out_pos != PAGE_SIZE) break; } while (xz_ret == XZ_OK); err = fw_decompress_xz_error(dev, xz_ret); if (!err) err = fw_map_paged_buf(fw_priv); out: xz_dec_end(xz_dec); return err; } static int fw_decompress_xz(struct device *dev, struct fw_priv *fw_priv, size_t in_size, const void *in_buffer) { /* if the buffer is pre-allocated, we can perform in single-shot mode */ if (fw_priv->data) return fw_decompress_xz_single(dev, fw_priv, in_size, in_buffer); else return fw_decompress_xz_pages(dev, fw_priv, in_size, in_buffer); } #endif /* CONFIG_FW_LOADER_COMPRESS_XZ */ /* direct firmware loading support */ static char fw_path_para[256]; static const char * const fw_path[] = { fw_path_para, "/lib/firmware/updates/" UTS_RELEASE, "/lib/firmware/updates", "/lib/firmware/" UTS_RELEASE, "/lib/firmware" }; /* * Typical usage is that passing 'firmware_class.path=$CUSTOMIZED_PATH' * from kernel command line because firmware_class is generally built in * kernel instead of module. */ module_param_string(path, fw_path_para, sizeof(fw_path_para), 0644); MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default path"); static int fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, const char *suffix, int (*decompress)(struct device *dev, struct fw_priv *fw_priv, size_t in_size, const void *in_buffer)) { size_t size; int i, len, maxlen = 0; int rc = -ENOENT; char *path, *nt = NULL; size_t msize = INT_MAX; void *buffer = NULL; /* Already populated data member means we're loading into a buffer */ if (!decompress && fw_priv->data) { buffer = fw_priv->data; msize = fw_priv->allocated_size; } path = __getname(); if (!path) return -ENOMEM; wait_for_initramfs(); for (i = 0; i < ARRAY_SIZE(fw_path); i++) { size_t file_size = 0; size_t *file_size_ptr = NULL; /* skip the unset customized path */ if (!fw_path[i][0]) continue; /* strip off \n from customized path */ maxlen = strlen(fw_path[i]); if (i == 0) { nt = strchr(fw_path[i], '\n'); if (nt) maxlen = nt - fw_path[i]; } len = snprintf(path, PATH_MAX, "%.*s/%s%s", maxlen, fw_path[i], fw_priv->fw_name, suffix); if (len >= PATH_MAX) { rc = -ENAMETOOLONG; break; } fw_priv->size = 0; /* * The total file size is only examined when doing a partial * read; the "full read" case needs to fail if the whole * firmware was not completely loaded. */ if ((fw_priv->opt_flags & FW_OPT_PARTIAL) && buffer) file_size_ptr = &file_size; /* load firmware files from the mount namespace of init */ rc = kernel_read_file_from_path_initns(path, fw_priv->offset, &buffer, msize, file_size_ptr, READING_FIRMWARE); if (rc < 0) { if (!(fw_priv->opt_flags & FW_OPT_NO_WARN)) { if (rc != -ENOENT) dev_warn(device, "loading %s failed with error %d\n", path, rc); else dev_dbg(device, "loading %s failed for no such file or directory.\n", path); } continue; } size = rc; rc = 0; dev_dbg(device, "Loading firmware from %s\n", path); if (decompress) { dev_dbg(device, "f/w decompressing %s\n", fw_priv->fw_name); rc = decompress(device, fw_priv, size, buffer); /* discard the superfluous original content */ vfree(buffer); buffer = NULL; if (rc) { fw_free_paged_buf(fw_priv); continue; } } else { dev_dbg(device, "direct-loading %s\n", fw_priv->fw_name); if (!fw_priv->data) fw_priv->data = buffer; fw_priv->size = size; } fw_state_done(fw_priv); break; } __putname(path); return rc; } /* firmware holds the ownership of pages */ static void firmware_free_data(const struct firmware *fw) { /* Loaded directly? */ if (!fw->priv) { vfree(fw->data); return; } free_fw_priv(fw->priv); } /* store the pages buffer info firmware from buf */ static void fw_set_page_data(struct fw_priv *fw_priv, struct firmware *fw) { fw->priv = fw_priv; fw->size = fw_priv->size; fw->data = fw_priv->data; pr_debug("%s: fw-%s fw_priv=%p data=%p size=%u\n", __func__, fw_priv->fw_name, fw_priv, fw_priv->data, (unsigned int)fw_priv->size); } #ifdef CONFIG_FW_CACHE static void fw_name_devm_release(struct device *dev, void *res) { struct fw_name_devm *fwn = res; if (fwn->magic == (unsigned long)&fw_cache) pr_debug("%s: fw_name-%s devm-%p released\n", __func__, fwn->name, res); kfree_const(fwn->name); } static int fw_devm_match(struct device *dev, void *res, void *match_data) { struct fw_name_devm *fwn = res; return (fwn->magic == (unsigned long)&fw_cache) && !strcmp(fwn->name, match_data); } static struct fw_name_devm *fw_find_devm_name(struct device *dev, const char *name) { struct fw_name_devm *fwn; fwn = devres_find(dev, fw_name_devm_release, fw_devm_match, (void *)name); return fwn; } static bool fw_cache_is_setup(struct device *dev, const char *name) { struct fw_name_devm *fwn; fwn = fw_find_devm_name(dev, name); if (fwn) return true; return false; } /* add firmware name into devres list */ static int fw_add_devm_name(struct device *dev, const char *name) { struct fw_name_devm *fwn; if (fw_cache_is_setup(dev, name)) return 0; fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm), GFP_KERNEL); if (!fwn) return -ENOMEM; fwn->name = kstrdup_const(name, GFP_KERNEL); if (!fwn->name) { devres_free(fwn); return -ENOMEM; } fwn->magic = (unsigned long)&fw_cache; devres_add(dev, fwn); return 0; } #else static bool fw_cache_is_setup(struct device *dev, const char *name) { return false; } static int fw_add_devm_name(struct device *dev, const char *name) { return 0; } #endif int assign_fw(struct firmware *fw, struct device *device) { struct fw_priv *fw_priv = fw->priv; int ret; mutex_lock(&fw_lock); if (!fw_priv->size || fw_state_is_aborted(fw_priv)) { mutex_unlock(&fw_lock); return -ENOENT; } /* * add firmware name into devres list so that we can auto cache * and uncache firmware for device. * * device may has been deleted already, but the problem * should be fixed in devres or driver core. */ /* don't cache firmware handled without uevent */ if (device && (fw_priv->opt_flags & FW_OPT_UEVENT) && !(fw_priv->opt_flags & FW_OPT_NOCACHE)) { ret = fw_add_devm_name(device, fw_priv->fw_name); if (ret) { mutex_unlock(&fw_lock); return ret; } } /* * After caching firmware image is started, let it piggyback * on request firmware. */ if (!(fw_priv->opt_flags & FW_OPT_NOCACHE) && fw_priv->fwc->state == FW_LOADER_START_CACHE) fw_cache_piggyback_on_request(fw_priv); /* pass the pages buffer to driver at the last minute */ fw_set_page_data(fw_priv, fw); mutex_unlock(&fw_lock); return 0; } /* prepare firmware and firmware_buf structs; * return 0 if a firmware is already assigned, 1 if need to load one, * or a negative error code */ static int _request_firmware_prepare(struct firmware **firmware_p, const char *name, struct device *device, void *dbuf, size_t size, size_t offset, u32 opt_flags) { struct firmware *firmware; struct fw_priv *fw_priv; int ret; *firmware_p = firmware = kzalloc_obj(*firmware); if (!firmware) { dev_err(device, "%s: kmalloc(struct firmware) failed\n", __func__); return -ENOMEM; } if (firmware_request_builtin_buf(firmware, name, dbuf, size)) { dev_dbg(device, "using built-in %s\n", name); return 0; /* assigned */ } ret = alloc_lookup_fw_priv(name, &fw_cache, &fw_priv, dbuf, size, offset, opt_flags); /* * bind with 'priv' now to avoid warning in failure path * of requesting firmware. */ firmware->priv = fw_priv; if (ret > 0) { ret = fw_state_wait(fw_priv); if (!ret) { fw_set_page_data(fw_priv, firmware); return 0; /* assigned */ } } if (ret < 0) return ret; return 1; /* need to load */ } /* * Batched requests need only one wake, we need to do this step last due to the * fallback mechanism. The buf is protected with kref_get(), and it won't be * released until the last user calls release_firmware(). * * Failed batched requests are possible as well, in such cases we just share * the struct fw_priv and won't release it until all requests are woken * and have gone through this same path. */ static void fw_abort_batch_reqs(struct firmware *fw) { struct fw_priv *fw_priv; /* Loaded directly? */ if (!fw || !fw->priv) return; fw_priv = fw->priv; mutex_lock(&fw_lock); if (!fw_state_is_aborted(fw_priv)) fw_state_aborted(fw_priv); mutex_unlock(&fw_lock); } #if defined(CONFIG_FW_LOADER_DEBUG) #include <crypto/sha2.h> static void fw_log_firmware_info(const struct firmware *fw, const char *name, struct device *device) { u8 digest[SHA256_DIGEST_SIZE]; sha256(fw->data, fw->size, digest); dev_dbg(device, "Loaded FW: %s, sha256: %*phN\n", name, SHA256_DIGEST_SIZE, digest); } #else static void fw_log_firmware_info(const struct firmware *fw, const char *name, struct device *device) {} #endif /* called from request_firmware() and request_firmware_work_func() */ static int _request_firmware(const struct firmware **firmware_p, const char *name, struct device *device, void *buf, size_t size, size_t offset, u32 opt_flags) { struct firmware *fw = NULL; bool nondirect = false; int ret; if (!firmware_p) return -EINVAL; if (!name || name[0] == '\0') { ret = -EINVAL; goto out; } /* * Reject firmware file names with ".." path components. * There are drivers that construct firmware file names from * device-supplied strings, and we don't want some device to be * able to tell us "I would like to be sent my firmware from * ../../../etc/shadow, please". * * This intentionally only looks at the firmware name, not at * the firmware base directory or at symlink contents. */ if (name_contains_dotdot(name)) { dev_warn(device, "Firmware load for '%s' refused, path contains '..' component\n", name); ret = -EINVAL; goto out; } ret = _request_firmware_prepare(&fw, name, device, buf, size, offset, opt_flags); if (ret <= 0) /* error or already assigned */ goto out; /* * We are about to try to access the firmware file. Because we may have been * called by a driver when serving an unrelated request from userland, we use * the kernel credentials to read the file. */ scoped_with_kernel_creds() { ret = fw_get_filesystem_firmware(device, fw->priv, "", NULL); /* Only full reads can support decompression, platform, and sysfs. */ if (!(opt_flags & FW_OPT_PARTIAL)) nondirect = true; #ifdef CONFIG_FW_LOADER_COMPRESS_ZSTD if (ret == -ENOENT && nondirect) ret = fw_get_filesystem_firmware(device, fw->priv, ".zst", fw_decompress_zstd); #endif #ifdef CONFIG_FW_LOADER_COMPRESS_XZ if (ret == -ENOENT && nondirect) ret = fw_get_filesystem_firmware(device, fw->priv, ".xz", fw_decompress_xz); #endif if (ret == -ENOENT && nondirect) ret = firmware_fallback_platform(fw->priv); if (ret) { if (!(opt_flags & FW_OPT_NO_WARN)) dev_warn(device, "Direct firmware load for %s failed with error %d\n", name, ret); if (nondirect) ret = firmware_fallback_sysfs(fw, name, device, opt_flags, ret); } else { ret = assign_fw(fw, device); } } out: if (ret < 0) { fw_abort_batch_reqs(fw); release_firmware(fw); fw = NULL; } else { fw_log_firmware_info(fw, name, device); } *firmware_p = fw; return ret; } /** * request_firmware() - send firmware request and wait for it * @firmware_p: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded * * @firmware_p will be used to return a firmware image by the name * of @name for device @device. * * Should be called from user context where sleeping is allowed. * * @name will be used as $FIRMWARE in the uevent environment and * should be distinctive enough not to be confused with any other * firmware image for this or any other device. * It must not contain any ".." path components - "foo/bar..bin" is * allowed, but "foo/../bar.bin" is not. * * Caller must hold the reference count of @device. * * The function can be called safely inside device's suspend and * resume callback. **/ int request_firmware(const struct firmware **firmware_p, const char *name, struct device *device) { int ret; /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, NULL, 0, 0, FW_OPT_UEVENT); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL(request_firmware); /** * firmware_request_nowarn() - request for an optional fw module * @firmware: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded * * This function is similar in behaviour to request_firmware(), except it * doesn't produce warning messages when the file is not found. The sysfs * fallback mechanism is enabled if direct filesystem lookup fails. However, * failures to find the firmware file with it are still suppressed. It is * therefore up to the driver to check for the return value of this call and to * decide when to inform the users of errors. **/ int firmware_request_nowarn(const struct firmware **firmware, const char *name, struct device *device) { int ret; /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware, name, device, NULL, 0, 0, FW_OPT_UEVENT | FW_OPT_NO_WARN); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL_GPL(firmware_request_nowarn); /** * request_firmware_direct() - load firmware directly without usermode helper * @firmware_p: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded * * This function works pretty much like request_firmware(), but this doesn't * fall back to usermode helper even if the firmware couldn't be loaded * directly from fs. Hence it's useful for loading optional firmwares, which * aren't always present, without extra long timeouts of udev. **/ int request_firmware_direct(const struct firmware **firmware_p, const char *name, struct device *device) { int ret; __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, NULL, 0, 0, FW_OPT_UEVENT | FW_OPT_NO_WARN | FW_OPT_NOFALLBACK_SYSFS); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL_GPL(request_firmware_direct); /** * firmware_request_platform() - request firmware with platform-fw fallback * @firmware: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded * * This function is similar in behaviour to request_firmware, except that if * direct filesystem lookup fails, it will fallback to looking for a copy of the * requested firmware embedded in the platform's main (e.g. UEFI) firmware. **/ int firmware_request_platform(const struct firmware **firmware, const char *name, struct device *device) { int ret; /* Need to pin this module until return */ __module_get(THIS_MODULE); ret = _request_firmware(firmware, name, device, NULL, 0, 0, FW_OPT_UEVENT | FW_OPT_FALLBACK_PLATFORM); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL_GPL(firmware_request_platform); /** * firmware_request_cache() - cache firmware for suspend so resume can use it * @device: device for which firmware should be cached for * @name: name of firmware file * * There are some devices with an optimization that enables the device to not * require loading firmware on system reboot. This optimization may still * require the firmware present on resume from suspend. This routine can be * used to ensure the firmware is present on resume from suspend in these * situations. This helper is not compatible with drivers which use * request_firmware_into_buf() or request_firmware_nowait() with no uevent set. **/ int firmware_request_cache(struct device *device, const char *name) { int ret; mutex_lock(&fw_lock); ret = fw_add_devm_name(device, name); mutex_unlock(&fw_lock); return ret; } EXPORT_SYMBOL_GPL(firmware_request_cache); /** * request_firmware_into_buf() - load firmware into a previously allocated buffer * @firmware_p: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded and DMA region allocated * @buf: address of buffer to load firmware into * @size: size of buffer * * This function works pretty much like request_firmware(), but it doesn't * allocate a buffer to hold the firmware data. Instead, the firmware * is loaded directly into the buffer pointed to by @buf and the @firmware_p * data member is pointed at @buf. * * This function doesn't cache firmware either. */ int request_firmware_into_buf(const struct firmware **firmware_p, const char *name, struct device *device, void *buf, size_t size) { int ret; if (fw_cache_is_setup(device, name)) return -EOPNOTSUPP; __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, buf, size, 0, FW_OPT_UEVENT | FW_OPT_NOCACHE); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL(request_firmware_into_buf); /** * request_partial_firmware_into_buf() - load partial firmware into a previously allocated buffer * @firmware_p: pointer to firmware image * @name: name of firmware file * @device: device for which firmware is being loaded and DMA region allocated * @buf: address of buffer to load firmware into * @size: size of buffer * @offset: offset into file to read * * This function works pretty much like request_firmware_into_buf except * it allows a partial read of the file. */ int request_partial_firmware_into_buf(const struct firmware **firmware_p, const char *name, struct device *device, void *buf, size_t size, size_t offset) { int ret; if (fw_cache_is_setup(device, name)) return -EOPNOTSUPP; __module_get(THIS_MODULE); ret = _request_firmware(firmware_p, name, device, buf, size, offset, FW_OPT_UEVENT | FW_OPT_NOCACHE | FW_OPT_PARTIAL); module_put(THIS_MODULE); return ret; } EXPORT_SYMBOL(request_partial_firmware_into_buf); /** * release_firmware() - release the resource associated with a firmware image * @fw: firmware resource to release **/ void release_firmware(const struct firmware *fw) { if (fw) { if (!firmware_is_builtin(fw)) firmware_free_data(fw); kfree(fw); } } EXPORT_SYMBOL(release_firmware); /* Async support */ struct firmware_work { struct work_struct work; struct module *module; const char *name; struct device *device; void *context; void (*cont)(const struct firmware *fw, void *context); u32 opt_flags; }; static void request_firmware_work_func(struct work_struct *work) { struct firmware_work *fw_work; const struct firmware *fw; fw_work = container_of(work, struct firmware_work, work); _request_firmware(&fw, fw_work->name, fw_work->device, NULL, 0, 0, fw_work->opt_flags); fw_work->cont(fw, fw_work->context); put_device(fw_work->device); /* taken in request_firmware_nowait() */ module_put(fw_work->module); kfree_const(fw_work->name); kfree(fw_work); } static int _request_firmware_nowait( struct module *module, bool uevent, const char *name, struct device *device, gfp_t gfp, void *context, void (*cont)(const struct firmware *fw, void *context), bool nowarn) { struct firmware_work *fw_work; fw_work = kzalloc_obj(struct firmware_work, gfp); if (!fw_work) return -ENOMEM; fw_work->module = module; fw_work->name = kstrdup_const(name, gfp); if (!fw_work->name) { kfree(fw_work); return -ENOMEM; } fw_work->device = device; fw_work->context = context; fw_work->cont = cont; fw_work->opt_flags = FW_OPT_NOWAIT | (uevent ? FW_OPT_UEVENT : FW_OPT_USERHELPER) | (nowarn ? FW_OPT_NO_WARN : 0); if (!uevent && fw_cache_is_setup(device, name)) { kfree_const(fw_work->name); kfree(fw_work); return -EOPNOTSUPP; } if (!try_module_get(module)) { kfree_const(fw_work->name); kfree(fw_work); return -EFAULT; } get_device(fw_work->device); INIT_WORK(&fw_work->work, request_firmware_work_func); schedule_work(&fw_work->work); return 0; } /** * request_firmware_nowait() - asynchronous version of request_firmware * @module: module requesting the firmware * @uevent: sends uevent to copy the firmware image if this flag * is non-zero else the firmware copy must be done manually. * @name: name of firmware file * @device: device for which firmware is being loaded * @gfp: allocation flags * @context: will be passed over to @cont, and * @fw may be %NULL if firmware request fails. * @cont: function will be called asynchronously when the firmware * request is over. * * Caller must hold the reference count of @device. * * Asynchronous variant of request_firmware() for user contexts: * - sleep for as small periods as possible since it may * increase kernel boot time of built-in device drivers * requesting firmware in their ->probe() methods, if * @gfp is GFP_KERNEL. * * - can't sleep at all if @gfp is GFP_ATOMIC. **/ int request_firmware_nowait( struct module *module, bool uevent, const char *name, struct device *device, gfp_t gfp, void *context, void (*cont)(const struct firmware *fw, void *context)) { return _request_firmware_nowait(module, uevent, name, device, gfp, context, cont, false); } EXPORT_SYMBOL(request_firmware_nowait); /** * firmware_request_nowait_nowarn() - async version of request_firmware_nowarn * @module: module requesting the firmware * @name: name of firmware file * @device: device for which firmware is being loaded * @gfp: allocation flags * @context: will be passed over to @cont, and * @fw may be %NULL if firmware request fails. * @cont: function will be called asynchronously when the firmware * request is over. * * Similar in function to request_firmware_nowait(), but doesn't print a warning * when the firmware file could not be found and always sends a uevent to copy * the firmware image. */ int firmware_request_nowait_nowarn( struct module *module, const char *name, struct device *device, gfp_t gfp, void *context, void (*cont)(const struct firmware *fw, void *context)) { return _request_firmware_nowait(module, FW_ACTION_UEVENT, name, device, gfp, context, cont, true); } EXPORT_SYMBOL_GPL(firmware_request_nowait_nowarn); #ifdef CONFIG_FW_CACHE static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain); /** * cache_firmware() - cache one firmware image in kernel memory space * @fw_name: the firmware image name * * Cache firmware in kernel memory so that drivers can use it when * system isn't ready for them to request firmware image from userspace. * Once it returns successfully, driver can use request_firmware or its * nowait version to get the cached firmware without any interacting * with userspace * * Return 0 if the firmware image has been cached successfully * Return !0 otherwise * */ static int cache_firmware(const char *fw_name) { int ret; const struct firmware *fw; pr_debug("%s: %s\n", __func__, fw_name); ret = request_firmware(&fw, fw_name, NULL); if (!ret) kfree(fw); pr_debug("%s: %s ret=%d\n", __func__, fw_name, ret); return ret; } static struct fw_priv *lookup_fw_priv(const char *fw_name) { struct fw_priv *tmp; struct firmware_cache *fwc = &fw_cache; spin_lock(&fwc->lock); tmp = __lookup_fw_priv(fw_name); spin_unlock(&fwc->lock); return tmp; } /** * uncache_firmware() - remove one cached firmware image * @fw_name: the firmware image name * * Uncache one firmware image which has been cached successfully * before. * * Return 0 if the firmware cache has been removed successfully * Return !0 otherwise * */ static int uncache_firmware(const char *fw_name) { struct fw_priv *fw_priv; struct firmware fw; pr_debug("%s: %s\n", __func__, fw_name); if (firmware_request_builtin(&fw, fw_name)) return 0; fw_priv = lookup_fw_priv(fw_name); if (fw_priv) { free_fw_priv(fw_priv); return 0; } return -EINVAL; } static struct fw_cache_entry *alloc_fw_cache_entry(const char *name) { struct fw_cache_entry *fce; fce = kzalloc_obj(*fce, GFP_ATOMIC); if (!fce) goto exit; fce->name = kstrdup_const(name, GFP_ATOMIC); if (!fce->name) { kfree(fce); fce = NULL; goto exit; } exit: return fce; } static int __fw_entry_found(const char *name) { struct firmware_cache *fwc = &fw_cache; struct fw_cache_entry *fce; list_for_each_entry(fce, &fwc->fw_names, list) { if (!strcmp(fce->name, name)) return 1; } return 0; } static void fw_cache_piggyback_on_request(struct fw_priv *fw_priv) { const char *name = fw_priv->fw_name; struct firmware_cache *fwc = fw_priv->fwc; struct fw_cache_entry *fce; spin_lock(&fwc->name_lock); if (__fw_entry_found(name)) goto found; fce = alloc_fw_cache_entry(name); if (fce) { list_add(&fce->list, &fwc->fw_names); kref_get(&fw_priv->ref); pr_debug("%s: fw: %s\n", __func__, name); } found: spin_unlock(&fwc->name_lock); } static void free_fw_cache_entry(struct fw_cache_entry *fce) { kfree_const(fce->name); kfree(fce); } static void __async_dev_cache_fw_image(void *fw_entry, async_cookie_t cookie) { struct fw_cache_entry *fce = fw_entry; struct firmware_cache *fwc = &fw_cache; int ret; ret = cache_firmware(fce->name); if (ret) { spin_lock(&fwc->name_lock); list_del(&fce->list); spin_unlock(&fwc->name_lock); free_fw_cache_entry(fce); } } /* called with dev->devres_lock held */ static void dev_create_fw_entry(struct device *dev, void *res, void *data) { struct fw_name_devm *fwn = res; const char *fw_name = fwn->name; struct list_head *head = data; struct fw_cache_entry *fce; fce = alloc_fw_cache_entry(fw_name); if (fce) list_add(&fce->list, head); } static int devm_name_match(struct device *dev, void *res, void *match_data) { struct fw_name_devm *fwn = res; return (fwn->magic == (unsigned long)match_data); } static void dev_cache_fw_image(struct device *dev, void *data) { LIST_HEAD(todo); struct fw_cache_entry *fce; struct fw_cache_entry *fce_next; struct firmware_cache *fwc = &fw_cache; devres_for_each_res(dev, fw_name_devm_release, devm_name_match, &fw_cache, dev_create_fw_entry, &todo); list_for_each_entry_safe(fce, fce_next, &todo, list) { list_del(&fce->list); spin_lock(&fwc->name_lock); /* only one cache entry for one firmware */ if (!__fw_entry_found(fce->name)) { list_add(&fce->list, &fwc->fw_names); } else { free_fw_cache_entry(fce); fce = NULL; } spin_unlock(&fwc->name_lock); if (fce) async_schedule_domain(__async_dev_cache_fw_image, (void *)fce, &fw_cache_domain); } } static void __device_uncache_fw_images(void) { struct firmware_cache *fwc = &fw_cache; struct fw_cache_entry *fce; spin_lock(&fwc->name_lock); while (!list_empty(&fwc->fw_names)) { fce = list_entry(fwc->fw_names.next, struct fw_cache_entry, list); list_del(&fce->list); spin_unlock(&fwc->name_lock); uncache_firmware(fce->name); free_fw_cache_entry(fce); spin_lock(&fwc->name_lock); } spin_unlock(&fwc->name_lock); } /** * device_cache_fw_images() - cache devices' firmware * * If one device called request_firmware or its nowait version * successfully before, the firmware names are recored into the * device's devres link list, so device_cache_fw_images can call * cache_firmware() to cache these firmwares for the device, * then the device driver can load its firmwares easily at * time when system is not ready to complete loading firmware. */ static void device_cache_fw_images(void) { struct firmware_cache *fwc = &fw_cache; DEFINE_WAIT(wait); pr_debug("%s\n", __func__); /* cancel uncache work */ cancel_delayed_work_sync(&fwc->work); fw_fallback_set_cache_timeout(); mutex_lock(&fw_lock); fwc->state = FW_LOADER_START_CACHE; dpm_for_each_dev(NULL, dev_cache_fw_image); mutex_unlock(&fw_lock); /* wait for completion of caching firmware for all devices */ async_synchronize_full_domain(&fw_cache_domain); fw_fallback_set_default_timeout(); } /** * device_uncache_fw_images() - uncache devices' firmware * * uncache all firmwares which have been cached successfully * by device_uncache_fw_images earlier */ static void device_uncache_fw_images(void) { pr_debug("%s\n", __func__); __device_uncache_fw_images(); } static void device_uncache_fw_images_work(struct work_struct *work) { device_uncache_fw_images(); } /** * device_uncache_fw_images_delay() - uncache devices firmwares * @delay: number of milliseconds to delay uncache device firmwares * * uncache all devices's firmwares which has been cached successfully * by device_cache_fw_images after @delay milliseconds. */ static void device_uncache_fw_images_delay(unsigned long delay) { queue_delayed_work(system_power_efficient_wq, &fw_cache.work, msecs_to_jiffies(delay)); } static int fw_pm_notify(struct notifier_block *notify_block, unsigned long mode, void *unused) { switch (mode) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: case PM_RESTORE_PREPARE: /* * Here, kill pending fallback requests will only kill * non-uevent firmware request to avoid stalling suspend. */ kill_pending_fw_fallback_reqs(false); device_cache_fw_images(); break; case PM_POST_SUSPEND: case PM_POST_HIBERNATION: case PM_POST_RESTORE: /* * In case that system sleep failed and syscore_suspend is * not called. */ mutex_lock(&fw_lock); fw_cache.state = FW_LOADER_NO_CACHE; mutex_unlock(&fw_lock); device_uncache_fw_images_delay(10 * MSEC_PER_SEC); break; } return 0; } /* stop caching firmware once syscore_suspend is reached */ static int fw_suspend(void *data) { fw_cache.state = FW_LOADER_NO_CACHE; return 0; } static const struct syscore_ops fw_syscore_ops = { .suspend = fw_suspend, }; static struct syscore fw_syscore = { .ops = &fw_syscore_ops, }; static int __init register_fw_pm_ops(void) { int ret; spin_lock_init(&fw_cache.name_lock); INIT_LIST_HEAD(&fw_cache.fw_names); INIT_DELAYED_WORK(&fw_cache.work, device_uncache_fw_images_work); fw_cache.pm_notify.notifier_call = fw_pm_notify; ret = register_pm_notifier(&fw_cache.pm_notify); if (ret) return ret; register_syscore(&fw_syscore); return ret; } static inline void unregister_fw_pm_ops(void) { unregister_syscore(&fw_syscore); unregister_pm_notifier(&fw_cache.pm_notify); } #else static void fw_cache_piggyback_on_request(struct fw_priv *fw_priv) { } static inline int register_fw_pm_ops(void) { return 0; } static inline void unregister_fw_pm_ops(void) { } #endif static void __init fw_cache_init(void) { spin_lock_init(&fw_cache.lock); INIT_LIST_HEAD(&fw_cache.head); fw_cache.state = FW_LOADER_NO_CACHE; } static int fw_shutdown_notify(struct notifier_block *unused1, unsigned long unused2, void *unused3) { /* * Kill all pending fallback requests to avoid both stalling shutdown, * and avoid a deadlock with the usermode_lock. */ kill_pending_fw_fallback_reqs(true); return NOTIFY_DONE; } static struct notifier_block fw_shutdown_nb = { .notifier_call = fw_shutdown_notify, }; static int __init firmware_class_init(void) { int ret; /* No need to unfold these on exit */ fw_cache_init(); ret = register_fw_pm_ops(); if (ret) return ret; ret = register_reboot_notifier(&fw_shutdown_nb); if (ret) goto out; return register_sysfs_loader(); out: unregister_fw_pm_ops(); return ret; } static void __exit firmware_class_exit(void) { unregister_fw_pm_ops(); unregister_reboot_notifier(&fw_shutdown_nb); unregister_sysfs_loader(); } fs_initcall(firmware_class_init); module_exit(firmware_class_exit); |
| 854 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 | /* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __CPUSET_INTERNAL_H #define __CPUSET_INTERNAL_H #include <linux/cgroup.h> #include <linux/cpu.h> #include <linux/cpumask.h> #include <linux/cpuset.h> #include <linux/spinlock.h> #include <linux/union_find.h> #include <linux/sched/isolation.h> /* See "Frequency meter" comments, below. */ struct fmeter { int cnt; /* unprocessed events count */ int val; /* most recent output value */ time64_t time; /* clock (secs) when val computed */ spinlock_t lock; /* guards read or write of above */ }; /* * Invalid partition error code */ enum prs_errcode { PERR_NONE = 0, PERR_INVCPUS, PERR_INVPARENT, PERR_NOTPART, PERR_NOTEXCL, PERR_NOCPUS, PERR_HOTPLUG, PERR_CPUSEMPTY, PERR_HKEEPING, PERR_ACCESS, PERR_REMOTE, }; /* bits in struct cpuset flags field */ typedef enum { CS_CPU_EXCLUSIVE, CS_MEM_EXCLUSIVE, CS_MEM_HARDWALL, CS_MEMORY_MIGRATE, CS_SCHED_LOAD_BALANCE, CS_SPREAD_PAGE, CS_SPREAD_SLAB, } cpuset_flagbits_t; /* The various types of files and directories in a cpuset file system */ typedef enum { FILE_MEMORY_MIGRATE, FILE_CPULIST, FILE_MEMLIST, FILE_EFFECTIVE_CPULIST, FILE_EFFECTIVE_MEMLIST, FILE_SUBPARTS_CPULIST, FILE_EXCLUSIVE_CPULIST, FILE_EFFECTIVE_XCPULIST, FILE_ISOLATED_CPULIST, FILE_CPU_EXCLUSIVE, FILE_MEM_EXCLUSIVE, FILE_MEM_HARDWALL, FILE_SCHED_LOAD_BALANCE, FILE_PARTITION_ROOT, FILE_SCHED_RELAX_DOMAIN_LEVEL, FILE_MEMORY_PRESSURE_ENABLED, FILE_MEMORY_PRESSURE, FILE_SPREAD_PAGE, FILE_SPREAD_SLAB, } cpuset_filetype_t; struct cpuset { struct cgroup_subsys_state css; unsigned long flags; /* "unsigned long" so bitops work */ /* * On default hierarchy: * * The user-configured masks can only be changed by writing to * cpuset.cpus and cpuset.mems, and won't be limited by the * parent masks. * * The effective masks is the real masks that apply to the tasks * in the cpuset. They may be changed if the configured masks are * changed or hotplug happens. * * effective_mask == configured_mask & parent's effective_mask, * and if it ends up empty, it will inherit the parent's mask. * * * On legacy hierarchy: * * The user-configured masks are always the same with effective masks. */ /* user-configured CPUs and Memory Nodes allow to tasks */ cpumask_var_t cpus_allowed; nodemask_t mems_allowed; /* effective CPUs and Memory Nodes allow to tasks */ cpumask_var_t effective_cpus; nodemask_t effective_mems; /* * Exclusive CPUs dedicated to current cgroup (default hierarchy only) * * The effective_cpus of a valid partition root comes solely from its * effective_xcpus and some of the effective_xcpus may be distributed * to sub-partitions below & hence excluded from its effective_cpus. * For a valid partition root, its effective_cpus have no relationship * with cpus_allowed unless its exclusive_cpus isn't set. * * This value will only be set if either exclusive_cpus is set or * when this cpuset becomes a local partition root. */ cpumask_var_t effective_xcpus; /* * Exclusive CPUs as requested by the user (default hierarchy only) * * Its value is independent of cpus_allowed and designates the set of * CPUs that can be granted to the current cpuset or its children when * it becomes a valid partition root. The effective set of exclusive * CPUs granted (effective_xcpus) depends on whether those exclusive * CPUs are passed down by its ancestors and not yet taken up by * another sibling partition root along the way. * * If its value isn't set, it defaults to cpus_allowed. */ cpumask_var_t exclusive_cpus; /* * This is old Memory Nodes tasks took on. * * - top_cpuset.old_mems_allowed is initialized to mems_allowed. * - A new cpuset's old_mems_allowed is initialized when some * task is moved into it. * - old_mems_allowed is used in cpuset_migrate_mm() when we change * cpuset.mems_allowed and have tasks' nodemask updated, and * then old_mems_allowed is updated to mems_allowed. */ nodemask_t old_mems_allowed; /* * Tasks are being attached to this cpuset. Used to prevent * zeroing cpus/mems_allowed between ->can_attach() and ->attach(). */ int attach_in_progress; /* partition root state */ int partition_root_state; /* * Whether cpuset is a remote partition. * It used to be a list anchoring all remote partitions — we can switch back * to a list if we need to iterate over the remote partitions. */ bool remote_partition; /* * number of SCHED_DEADLINE tasks attached to this cpuset, so that we * know when to rebuild associated root domain bandwidth information. */ int nr_deadline_tasks; int nr_migrate_dl_tasks; u64 sum_migrate_dl_bw; /* * CPU used for temporary DL bandwidth allocation during attach; * -1 if no DL bandwidth was allocated in the current attach. */ int dl_bw_cpu; /* Invalid partition error code, not lock protected */ enum prs_errcode prs_err; /* Handle for cpuset.cpus.partition */ struct cgroup_file partition_file; #ifdef CONFIG_CPUSETS_V1 struct fmeter fmeter; /* memory_pressure filter */ /* for custom sched domain */ int relax_domain_level; /* Used to merge intersecting subsets for generate_sched_domains */ struct uf_node node; #endif }; extern struct cpuset top_cpuset; static inline struct cpuset *css_cs(struct cgroup_subsys_state *css) { return css ? container_of(css, struct cpuset, css) : NULL; } /* Retrieve the cpuset for a task */ static inline struct cpuset *task_cs(struct task_struct *task) { return css_cs(task_css(task, cpuset_cgrp_id)); } static inline struct cpuset *parent_cs(struct cpuset *cs) { return css_cs(cs->css.parent); } /* convenient tests for these bits */ static inline bool is_cpuset_online(struct cpuset *cs) { return css_is_online(&cs->css) && !css_is_dying(&cs->css); } static inline int is_cpu_exclusive(const struct cpuset *cs) { return test_bit(CS_CPU_EXCLUSIVE, &cs->flags); } static inline int is_mem_exclusive(const struct cpuset *cs) { return test_bit(CS_MEM_EXCLUSIVE, &cs->flags); } static inline int is_mem_hardwall(const struct cpuset *cs) { return test_bit(CS_MEM_HARDWALL, &cs->flags); } static inline int is_sched_load_balance(const struct cpuset *cs) { return test_bit(CS_SCHED_LOAD_BALANCE, &cs->flags); } static inline int is_memory_migrate(const struct cpuset *cs) { return test_bit(CS_MEMORY_MIGRATE, &cs->flags); } static inline int is_spread_page(const struct cpuset *cs) { return test_bit(CS_SPREAD_PAGE, &cs->flags); } static inline int is_spread_slab(const struct cpuset *cs) { return test_bit(CS_SPREAD_SLAB, &cs->flags); } /* * Helper routine for generate_sched_domains(). * Do cpusets a, b have overlapping effective cpus_allowed masks? */ static inline int cpusets_overlap(struct cpuset *a, struct cpuset *b) { return cpumask_intersects(a->effective_cpus, b->effective_cpus); } static inline int nr_cpusets(void) { /* jump label reference count + the top-level cpuset */ return static_key_count(&cpusets_enabled_key.key) + 1; } static inline bool cpuset_is_populated(struct cpuset *cs) { lockdep_assert_cpuset_lock_held(); /* Cpusets in the process of attaching should be considered as populated */ return cgroup_is_populated(cs->css.cgroup) || cs->attach_in_progress; } /** * cpuset_for_each_child - traverse online children of a cpuset * @child_cs: loop cursor pointing to the current child * @pos_css: used for iteration * @parent_cs: target cpuset to walk children of * * Walk @child_cs through the online children of @parent_cs. Must be used * with RCU read locked. */ #define cpuset_for_each_child(child_cs, pos_css, parent_cs) \ css_for_each_child((pos_css), &(parent_cs)->css) \ if (is_cpuset_online(((child_cs) = css_cs((pos_css))))) /** * cpuset_for_each_descendant_pre - pre-order walk of a cpuset's descendants * @des_cs: loop cursor pointing to the current descendant * @pos_css: used for iteration * @root_cs: target cpuset to walk ancestor of * * Walk @des_cs through the online descendants of @root_cs. Must be used * with RCU read locked. The caller may modify @pos_css by calling * css_rightmost_descendant() to skip subtree. @root_cs is included in the * iteration and the first node to be visited. */ #define cpuset_for_each_descendant_pre(des_cs, pos_css, root_cs) \ css_for_each_descendant_pre((pos_css), &(root_cs)->css) \ if (is_cpuset_online(((des_cs) = css_cs((pos_css))))) void rebuild_sched_domains_locked(void); void cpuset_callback_lock_irq(void); void cpuset_callback_unlock_irq(void); void cpuset_update_tasks_cpumask(struct cpuset *cs, struct cpumask *new_cpus); void cpuset_update_tasks_nodemask(struct cpuset *cs); int cpuset_update_flag(cpuset_flagbits_t bit, struct cpuset *cs, int turning_on); ssize_t cpuset_write_resmask(struct kernfs_open_file *of, char *buf, size_t nbytes, loff_t off); int cpuset_common_seq_show(struct seq_file *sf, void *v); void cpuset_full_lock(void); void cpuset_full_unlock(void); /* * cpuset-v1.c */ #ifdef CONFIG_CPUSETS_V1 extern struct cftype cpuset1_files[]; void cpuset1_update_task_spread_flags(struct cpuset *cs, struct task_struct *tsk); void cpuset1_update_tasks_flags(struct cpuset *cs); void cpuset1_hotplug_update_tasks(struct cpuset *cs, struct cpumask *new_cpus, nodemask_t *new_mems, bool cpus_updated, bool mems_updated); int cpuset1_validate_change(struct cpuset *cur, struct cpuset *trial); bool cpuset1_cpus_excl_conflict(struct cpuset *cs1, struct cpuset *cs2); void cpuset1_init(struct cpuset *cs); void cpuset1_online_css(struct cgroup_subsys_state *css); int cpuset1_generate_sched_domains(cpumask_var_t **domains, struct sched_domain_attr **attributes); #else static inline void cpuset1_update_task_spread_flags(struct cpuset *cs, struct task_struct *tsk) {} static inline void cpuset1_update_tasks_flags(struct cpuset *cs) {} static inline void cpuset1_hotplug_update_tasks(struct cpuset *cs, struct cpumask *new_cpus, nodemask_t *new_mems, bool cpus_updated, bool mems_updated) {} static inline int cpuset1_validate_change(struct cpuset *cur, struct cpuset *trial) { return 0; } static inline bool cpuset1_cpus_excl_conflict(struct cpuset *cs1, struct cpuset *cs2) { return false; } static inline void cpuset1_init(struct cpuset *cs) {} static inline void cpuset1_online_css(struct cgroup_subsys_state *css) {} static inline int cpuset1_generate_sched_domains(cpumask_var_t **domains, struct sched_domain_attr **attributes) { return 0; }; #endif /* CONFIG_CPUSETS_V1 */ #endif /* __CPUSET_INTERNAL_H */ |
| 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 | // SPDX-License-Identifier: GPL-2.0-only /* * Driver for DiBcom DiB3000MC/P-demodulator. * * Copyright (C) 2004-7 DiBcom (http://www.dibcom.fr/) * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) * * This code is partially based on the previous dib3000mc.c . */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/slab.h> #include <linux/i2c.h> #include <media/dvb_frontend.h> #include "dib3000mc.h" static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); static int buggy_sfn_workaround; module_param(buggy_sfn_workaround, int, 0644); MODULE_PARM_DESC(buggy_sfn_workaround, "Enable work-around for buggy SFNs (default: 0)"); #define dprintk(fmt, arg...) do { \ if (debug) \ printk(KERN_DEBUG pr_fmt("%s: " fmt), \ __func__, ##arg); \ } while (0) struct dib3000mc_state { struct dvb_frontend demod; struct dib3000mc_config *cfg; u8 i2c_addr; struct i2c_adapter *i2c_adap; struct dibx000_i2c_master i2c_master; u32 timf; u32 current_bandwidth; u16 dev_id; u8 sfn_workaround_active :1; }; static u16 dib3000mc_read_word(struct dib3000mc_state *state, u16 reg) { struct i2c_msg msg[2] = { { .addr = state->i2c_addr >> 1, .flags = 0, .len = 2 }, { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .len = 2 }, }; u16 word; u8 *b; b = kmalloc(4, GFP_KERNEL); if (!b) return 0; b[0] = (reg >> 8) | 0x80; b[1] = reg; b[2] = 0; b[3] = 0; msg[0].buf = b; msg[1].buf = b + 2; if (i2c_transfer(state->i2c_adap, msg, 2) != 2) dprintk("i2c read error on %d\n",reg); word = (b[2] << 8) | b[3]; kfree(b); return word; } static int dib3000mc_write_word(struct dib3000mc_state *state, u16 reg, u16 val) { struct i2c_msg msg = { .addr = state->i2c_addr >> 1, .flags = 0, .len = 4 }; int rc; u8 *b; b = kmalloc(4, GFP_KERNEL); if (!b) return -ENOMEM; b[0] = reg >> 8; b[1] = reg; b[2] = val >> 8; b[3] = val; msg.buf = b; rc = i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0; kfree(b); return rc; } static int dib3000mc_identify(struct dib3000mc_state *state) { u16 value; if ((value = dib3000mc_read_word(state, 1025)) != 0x01b3) { dprintk("-E- DiB3000MC/P: wrong Vendor ID (read=0x%x)\n",value); return -EREMOTEIO; } value = dib3000mc_read_word(state, 1026); if (value != 0x3001 && value != 0x3002) { dprintk("-E- DiB3000MC/P: wrong Device ID (%x)\n",value); return -EREMOTEIO; } state->dev_id = value; dprintk("-I- found DiB3000MC/P: %x\n",state->dev_id); return 0; } static int dib3000mc_set_timing(struct dib3000mc_state *state, s16 nfft, u32 bw, u8 update_offset) { u32 timf; if (state->timf == 0) { timf = 1384402; // default value for 8MHz if (update_offset) msleep(200); // first time we do an update } else timf = state->timf; timf *= (bw / 1000); if (update_offset) { s16 tim_offs = dib3000mc_read_word(state, 416); if (tim_offs & 0x2000) tim_offs -= 0x4000; if (nfft == TRANSMISSION_MODE_2K) tim_offs *= 4; timf += tim_offs; state->timf = timf / (bw / 1000); } dprintk("timf: %d\n", timf); dib3000mc_write_word(state, 23, (u16) (timf >> 16)); dib3000mc_write_word(state, 24, (u16) (timf ) & 0xffff); return 0; } static int dib3000mc_setup_pwm_state(struct dib3000mc_state *state) { u16 reg_51, reg_52 = state->cfg->agc->setup & 0xfefb; if (state->cfg->pwm3_inversion) { reg_51 = (2 << 14) | (0 << 10) | (7 << 6) | (2 << 2) | (2 << 0); reg_52 |= (1 << 2); } else { reg_51 = (2 << 14) | (4 << 10) | (7 << 6) | (2 << 2) | (2 << 0); reg_52 |= (1 << 8); } dib3000mc_write_word(state, 51, reg_51); dib3000mc_write_word(state, 52, reg_52); if (state->cfg->use_pwm3) dib3000mc_write_word(state, 245, (1 << 3) | (1 << 0)); else dib3000mc_write_word(state, 245, 0); dib3000mc_write_word(state, 1040, 0x3); return 0; } static int dib3000mc_set_output_mode(struct dib3000mc_state *state, int mode) { int ret = 0; u16 fifo_threshold = 1792; u16 outreg = 0; u16 outmode = 0; u16 elecout = 1; u16 smo_reg = dib3000mc_read_word(state, 206) & 0x0010; /* keep the pid_parse bit */ dprintk("-I- Setting output mode for demod %p to %d\n", &state->demod, mode); switch (mode) { case OUTMODE_HIGH_Z: // disable elecout = 0; break; case OUTMODE_MPEG2_PAR_GATED_CLK: // STBs with parallel gated clock outmode = 0; break; case OUTMODE_MPEG2_PAR_CONT_CLK: // STBs with parallel continues clock outmode = 1; break; case OUTMODE_MPEG2_SERIAL: // STBs with serial input outmode = 2; break; case OUTMODE_MPEG2_FIFO: // e.g. USB feeding elecout = 3; /*ADDR @ 206 : P_smo_error_discard [1;6:6] = 0 P_smo_rs_discard [1;5:5] = 0 P_smo_pid_parse [1;4:4] = 0 P_smo_fifo_flush [1;3:3] = 0 P_smo_mode [2;2:1] = 11 P_smo_ovf_prot [1;0:0] = 0 */ smo_reg |= 3 << 1; fifo_threshold = 512; outmode = 5; break; case OUTMODE_DIVERSITY: outmode = 4; elecout = 1; break; default: dprintk("Unhandled output_mode passed to be set for demod %p\n",&state->demod); outmode = 0; break; } if ((state->cfg->output_mpeg2_in_188_bytes)) smo_reg |= (1 << 5); // P_smo_rs_discard [1;5:5] = 1 outreg = dib3000mc_read_word(state, 244) & 0x07FF; outreg |= (outmode << 11); ret |= dib3000mc_write_word(state, 244, outreg); ret |= dib3000mc_write_word(state, 206, smo_reg); /*smo_ mode*/ ret |= dib3000mc_write_word(state, 207, fifo_threshold); /* synchronous fread */ ret |= dib3000mc_write_word(state, 1040, elecout); /* P_out_cfg */ return ret; } static int dib3000mc_set_bandwidth(struct dib3000mc_state *state, u32 bw) { u16 bw_cfg[6] = { 0 }; u16 imp_bw_cfg[3] = { 0 }; u16 reg; /* settings here are for 27.7MHz */ switch (bw) { case 8000: bw_cfg[0] = 0x0019; bw_cfg[1] = 0x5c30; bw_cfg[2] = 0x0054; bw_cfg[3] = 0x88a0; bw_cfg[4] = 0x01a6; bw_cfg[5] = 0xab20; imp_bw_cfg[0] = 0x04db; imp_bw_cfg[1] = 0x00db; imp_bw_cfg[2] = 0x00b7; break; case 7000: bw_cfg[0] = 0x001c; bw_cfg[1] = 0xfba5; bw_cfg[2] = 0x0060; bw_cfg[3] = 0x9c25; bw_cfg[4] = 0x01e3; bw_cfg[5] = 0x0cb7; imp_bw_cfg[0] = 0x04c0; imp_bw_cfg[1] = 0x00c0; imp_bw_cfg[2] = 0x00a0; break; case 6000: bw_cfg[0] = 0x0021; bw_cfg[1] = 0xd040; bw_cfg[2] = 0x0070; bw_cfg[3] = 0xb62b; bw_cfg[4] = 0x0233; bw_cfg[5] = 0x8ed5; imp_bw_cfg[0] = 0x04a5; imp_bw_cfg[1] = 0x00a5; imp_bw_cfg[2] = 0x0089; break; case 5000: bw_cfg[0] = 0x0028; bw_cfg[1] = 0x9380; bw_cfg[2] = 0x0087; bw_cfg[3] = 0x4100; bw_cfg[4] = 0x02a4; bw_cfg[5] = 0x4500; imp_bw_cfg[0] = 0x0489; imp_bw_cfg[1] = 0x0089; imp_bw_cfg[2] = 0x0072; break; default: return -EINVAL; } for (reg = 6; reg < 12; reg++) dib3000mc_write_word(state, reg, bw_cfg[reg - 6]); dib3000mc_write_word(state, 12, 0x0000); dib3000mc_write_word(state, 13, 0x03e8); dib3000mc_write_word(state, 14, 0x0000); dib3000mc_write_word(state, 15, 0x03f2); dib3000mc_write_word(state, 16, 0x0001); dib3000mc_write_word(state, 17, 0xb0d0); // P_sec_len dib3000mc_write_word(state, 18, 0x0393); dib3000mc_write_word(state, 19, 0x8700); for (reg = 55; reg < 58; reg++) dib3000mc_write_word(state, reg, imp_bw_cfg[reg - 55]); // Timing configuration dib3000mc_set_timing(state, TRANSMISSION_MODE_2K, bw, 0); return 0; } static u16 impulse_noise_val[29] = { 0x38, 0x6d9, 0x3f28, 0x7a7, 0x3a74, 0x196, 0x32a, 0x48c, 0x3ffe, 0x7f3, 0x2d94, 0x76, 0x53d, 0x3ff8, 0x7e3, 0x3320, 0x76, 0x5b3, 0x3feb, 0x7d2, 0x365e, 0x76, 0x48c, 0x3ffe, 0x5b3, 0x3feb, 0x76, 0x0000, 0xd }; static void dib3000mc_set_impulse_noise(struct dib3000mc_state *state, u8 mode, s16 nfft) { u16 i; for (i = 58; i < 87; i++) dib3000mc_write_word(state, i, impulse_noise_val[i-58]); if (nfft == TRANSMISSION_MODE_8K) { dib3000mc_write_word(state, 58, 0x3b); dib3000mc_write_word(state, 84, 0x00); dib3000mc_write_word(state, 85, 0x8200); } dib3000mc_write_word(state, 34, 0x1294); dib3000mc_write_word(state, 35, 0x1ff8); if (mode == 1) dib3000mc_write_word(state, 55, dib3000mc_read_word(state, 55) | (1 << 10)); } static int dib3000mc_init(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; struct dibx000_agc_config *agc = state->cfg->agc; // Restart Configuration dib3000mc_write_word(state, 1027, 0x8000); dib3000mc_write_word(state, 1027, 0x0000); // power up the demod + mobility configuration dib3000mc_write_word(state, 140, 0x0000); dib3000mc_write_word(state, 1031, 0); if (state->cfg->mobile_mode) { dib3000mc_write_word(state, 139, 0x0000); dib3000mc_write_word(state, 141, 0x0000); dib3000mc_write_word(state, 175, 0x0002); dib3000mc_write_word(state, 1032, 0x0000); } else { dib3000mc_write_word(state, 139, 0x0001); dib3000mc_write_word(state, 141, 0x0000); dib3000mc_write_word(state, 175, 0x0000); dib3000mc_write_word(state, 1032, 0x012C); } dib3000mc_write_word(state, 1033, 0x0000); // P_clk_cfg dib3000mc_write_word(state, 1037, 0x3130); // other configurations // P_ctrl_sfreq dib3000mc_write_word(state, 33, (5 << 0)); dib3000mc_write_word(state, 88, (1 << 10) | (0x10 << 0)); // Phase noise control // P_fft_phacor_inh, P_fft_phacor_cpe, P_fft_powrange dib3000mc_write_word(state, 99, (1 << 9) | (0x20 << 0)); if (state->cfg->phase_noise_mode == 0) dib3000mc_write_word(state, 111, 0x00); else dib3000mc_write_word(state, 111, 0x02); // P_agc_global dib3000mc_write_word(state, 50, 0x8000); // agc setup misc dib3000mc_setup_pwm_state(state); // P_agc_counter_lock dib3000mc_write_word(state, 53, 0x87); // P_agc_counter_unlock dib3000mc_write_word(state, 54, 0x87); /* agc */ dib3000mc_write_word(state, 36, state->cfg->max_time); dib3000mc_write_word(state, 37, (state->cfg->agc_command1 << 13) | (state->cfg->agc_command2 << 12) | (0x1d << 0)); dib3000mc_write_word(state, 38, state->cfg->pwm3_value); dib3000mc_write_word(state, 39, state->cfg->ln_adc_level); // set_agc_loop_Bw dib3000mc_write_word(state, 40, 0x0179); dib3000mc_write_word(state, 41, 0x03f0); dib3000mc_write_word(state, 42, agc->agc1_max); dib3000mc_write_word(state, 43, agc->agc1_min); dib3000mc_write_word(state, 44, agc->agc2_max); dib3000mc_write_word(state, 45, agc->agc2_min); dib3000mc_write_word(state, 46, (agc->agc1_pt1 << 8) | agc->agc1_pt2); dib3000mc_write_word(state, 47, (agc->agc1_slope1 << 8) | agc->agc1_slope2); dib3000mc_write_word(state, 48, (agc->agc2_pt1 << 8) | agc->agc2_pt2); dib3000mc_write_word(state, 49, (agc->agc2_slope1 << 8) | agc->agc2_slope2); // Begin: TimeOut registers // P_pha3_thres dib3000mc_write_word(state, 110, 3277); // P_timf_alpha = 6, P_corm_alpha = 6, P_corm_thres = 0x80 dib3000mc_write_word(state, 26, 0x6680); // lock_mask0 dib3000mc_write_word(state, 1, 4); // lock_mask1 dib3000mc_write_word(state, 2, 4); // lock_mask2 dib3000mc_write_word(state, 3, 0x1000); // P_search_maxtrial=1 dib3000mc_write_word(state, 5, 1); dib3000mc_set_bandwidth(state, 8000); // div_lock_mask dib3000mc_write_word(state, 4, 0x814); dib3000mc_write_word(state, 21, (1 << 9) | 0x164); dib3000mc_write_word(state, 22, 0x463d); // Spurious rm cfg // P_cspu_regul, P_cspu_win_cut dib3000mc_write_word(state, 120, 0x200f); // P_adp_selec_monit dib3000mc_write_word(state, 134, 0); // Fec cfg dib3000mc_write_word(state, 195, 0x10); // diversity register: P_dvsy_sync_wait.. dib3000mc_write_word(state, 180, 0x2FF0); // Impulse noise configuration dib3000mc_set_impulse_noise(state, 0, TRANSMISSION_MODE_8K); // output mode set-up dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); /* close the i2c-gate */ dib3000mc_write_word(state, 769, (1 << 7) ); return 0; } static int dib3000mc_sleep(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; dib3000mc_write_word(state, 1031, 0xFFFF); dib3000mc_write_word(state, 1032, 0xFFFF); dib3000mc_write_word(state, 1033, 0xFFF0); return 0; } static void dib3000mc_set_adp_cfg(struct dib3000mc_state *state, s16 qam) { u16 cfg[4] = { 0 },reg; switch (qam) { case QPSK: cfg[0] = 0x099a; cfg[1] = 0x7fae; cfg[2] = 0x0333; cfg[3] = 0x7ff0; break; case QAM_16: cfg[0] = 0x023d; cfg[1] = 0x7fdf; cfg[2] = 0x00a4; cfg[3] = 0x7ff0; break; case QAM_64: cfg[0] = 0x0148; cfg[1] = 0x7ff0; cfg[2] = 0x00a4; cfg[3] = 0x7ff8; break; } for (reg = 129; reg < 133; reg++) dib3000mc_write_word(state, reg, cfg[reg - 129]); } static void dib3000mc_set_channel_cfg(struct dib3000mc_state *state, struct dtv_frontend_properties *ch, u16 seq) { u16 value; u32 bw = BANDWIDTH_TO_KHZ(ch->bandwidth_hz); dib3000mc_set_bandwidth(state, bw); dib3000mc_set_timing(state, ch->transmission_mode, bw, 0); #if 1 dib3000mc_write_word(state, 100, (16 << 6) + 9); #else if (boost) dib3000mc_write_word(state, 100, (11 << 6) + 6); else dib3000mc_write_word(state, 100, (16 << 6) + 9); #endif dib3000mc_write_word(state, 1027, 0x0800); dib3000mc_write_word(state, 1027, 0x0000); //Default cfg isi offset adp dib3000mc_write_word(state, 26, 0x6680); dib3000mc_write_word(state, 29, 0x1273); dib3000mc_write_word(state, 33, 5); dib3000mc_set_adp_cfg(state, QAM_16); dib3000mc_write_word(state, 133, 15564); dib3000mc_write_word(state, 12 , 0x0); dib3000mc_write_word(state, 13 , 0x3e8); dib3000mc_write_word(state, 14 , 0x0); dib3000mc_write_word(state, 15 , 0x3f2); dib3000mc_write_word(state, 93,0); dib3000mc_write_word(state, 94,0); dib3000mc_write_word(state, 95,0); dib3000mc_write_word(state, 96,0); dib3000mc_write_word(state, 97,0); dib3000mc_write_word(state, 98,0); dib3000mc_set_impulse_noise(state, 0, ch->transmission_mode); value = 0; switch (ch->transmission_mode) { case TRANSMISSION_MODE_2K: value |= (0 << 7); break; default: case TRANSMISSION_MODE_8K: value |= (1 << 7); break; } switch (ch->guard_interval) { case GUARD_INTERVAL_1_32: value |= (0 << 5); break; case GUARD_INTERVAL_1_16: value |= (1 << 5); break; case GUARD_INTERVAL_1_4: value |= (3 << 5); break; default: case GUARD_INTERVAL_1_8: value |= (2 << 5); break; } switch (ch->modulation) { case QPSK: value |= (0 << 3); break; case QAM_16: value |= (1 << 3); break; default: case QAM_64: value |= (2 << 3); break; } switch (HIERARCHY_1) { case HIERARCHY_2: value |= 2; break; case HIERARCHY_4: value |= 4; break; default: case HIERARCHY_1: value |= 1; break; } dib3000mc_write_word(state, 0, value); dib3000mc_write_word(state, 5, (1 << 8) | ((seq & 0xf) << 4)); value = 0; if (ch->hierarchy == 1) value |= (1 << 4); if (1 == 1) value |= 1; switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) { case FEC_2_3: value |= (2 << 1); break; case FEC_3_4: value |= (3 << 1); break; case FEC_5_6: value |= (5 << 1); break; case FEC_7_8: value |= (7 << 1); break; default: case FEC_1_2: value |= (1 << 1); break; } dib3000mc_write_word(state, 181, value); // diversity synchro delay add 50% SFN margin switch (ch->transmission_mode) { case TRANSMISSION_MODE_8K: value = 256; break; case TRANSMISSION_MODE_2K: default: value = 64; break; } switch (ch->guard_interval) { case GUARD_INTERVAL_1_16: value *= 2; break; case GUARD_INTERVAL_1_8: value *= 4; break; case GUARD_INTERVAL_1_4: value *= 8; break; default: case GUARD_INTERVAL_1_32: value *= 1; break; } value <<= 4; value |= dib3000mc_read_word(state, 180) & 0x000f; dib3000mc_write_word(state, 180, value); // restart demod value = dib3000mc_read_word(state, 0); dib3000mc_write_word(state, 0, value | (1 << 9)); dib3000mc_write_word(state, 0, value); msleep(30); dib3000mc_set_impulse_noise(state, state->cfg->impulse_noise_mode, ch->transmission_mode); } static int dib3000mc_autosearch_start(struct dvb_frontend *demod) { struct dtv_frontend_properties *chan = &demod->dtv_property_cache; struct dib3000mc_state *state = demod->demodulator_priv; u16 reg; // u32 val; struct dtv_frontend_properties schan; schan = *chan; /* TODO what is that ? */ /* a channel for autosearch */ schan.transmission_mode = TRANSMISSION_MODE_8K; schan.guard_interval = GUARD_INTERVAL_1_32; schan.modulation = QAM_64; schan.code_rate_HP = FEC_2_3; schan.code_rate_LP = FEC_2_3; schan.hierarchy = 0; dib3000mc_set_channel_cfg(state, &schan, 11); reg = dib3000mc_read_word(state, 0); dib3000mc_write_word(state, 0, reg | (1 << 8)); dib3000mc_read_word(state, 511); dib3000mc_write_word(state, 0, reg); return 0; } static int dib3000mc_autosearch_is_irq(struct dvb_frontend *demod) { struct dib3000mc_state *state = demod->demodulator_priv; u16 irq_pending = dib3000mc_read_word(state, 511); if (irq_pending & 0x1) // failed return 1; if (irq_pending & 0x2) // succeeded return 2; return 0; // still pending } static int dib3000mc_tune(struct dvb_frontend *demod) { struct dtv_frontend_properties *ch = &demod->dtv_property_cache; struct dib3000mc_state *state = demod->demodulator_priv; // ** configure demod ** dib3000mc_set_channel_cfg(state, ch, 0); // activates isi if (state->sfn_workaround_active) { dprintk("SFN workaround is active\n"); dib3000mc_write_word(state, 29, 0x1273); dib3000mc_write_word(state, 108, 0x4000); // P_pha3_force_pha_shift } else { dib3000mc_write_word(state, 29, 0x1073); dib3000mc_write_word(state, 108, 0x0000); // P_pha3_force_pha_shift } dib3000mc_set_adp_cfg(state, (u8)ch->modulation); if (ch->transmission_mode == TRANSMISSION_MODE_8K) { dib3000mc_write_word(state, 26, 38528); dib3000mc_write_word(state, 33, 8); } else { dib3000mc_write_word(state, 26, 30336); dib3000mc_write_word(state, 33, 6); } if (dib3000mc_read_word(state, 509) & 0x80) dib3000mc_set_timing(state, ch->transmission_mode, BANDWIDTH_TO_KHZ(ch->bandwidth_hz), 1); return 0; } struct i2c_adapter * dib3000mc_get_tuner_i2c_master(struct dvb_frontend *demod, int gating) { struct dib3000mc_state *st = demod->demodulator_priv; return dibx000_get_i2c_adapter(&st->i2c_master, DIBX000_I2C_INTERFACE_TUNER, gating); } EXPORT_SYMBOL(dib3000mc_get_tuner_i2c_master); static int dib3000mc_get_frontend(struct dvb_frontend* fe, struct dtv_frontend_properties *fep) { struct dib3000mc_state *state = fe->demodulator_priv; u16 tps = dib3000mc_read_word(state,458); fep->inversion = INVERSION_AUTO; fep->bandwidth_hz = state->current_bandwidth; switch ((tps >> 8) & 0x1) { case 0: fep->transmission_mode = TRANSMISSION_MODE_2K; break; case 1: fep->transmission_mode = TRANSMISSION_MODE_8K; break; } switch (tps & 0x3) { case 0: fep->guard_interval = GUARD_INTERVAL_1_32; break; case 1: fep->guard_interval = GUARD_INTERVAL_1_16; break; case 2: fep->guard_interval = GUARD_INTERVAL_1_8; break; case 3: fep->guard_interval = GUARD_INTERVAL_1_4; break; } switch ((tps >> 13) & 0x3) { case 0: fep->modulation = QPSK; break; case 1: fep->modulation = QAM_16; break; case 2: default: fep->modulation = QAM_64; break; } /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */ /* (tps >> 12) & 0x1 == hrch is used, (tps >> 9) & 0x7 == alpha */ fep->hierarchy = HIERARCHY_NONE; switch ((tps >> 5) & 0x7) { case 1: fep->code_rate_HP = FEC_1_2; break; case 2: fep->code_rate_HP = FEC_2_3; break; case 3: fep->code_rate_HP = FEC_3_4; break; case 5: fep->code_rate_HP = FEC_5_6; break; case 7: default: fep->code_rate_HP = FEC_7_8; break; } switch ((tps >> 2) & 0x7) { case 1: fep->code_rate_LP = FEC_1_2; break; case 2: fep->code_rate_LP = FEC_2_3; break; case 3: fep->code_rate_LP = FEC_3_4; break; case 5: fep->code_rate_LP = FEC_5_6; break; case 7: default: fep->code_rate_LP = FEC_7_8; break; } return 0; } static int dib3000mc_set_frontend(struct dvb_frontend *fe) { struct dtv_frontend_properties *fep = &fe->dtv_property_cache; struct dib3000mc_state *state = fe->demodulator_priv; int ret; dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); state->current_bandwidth = fep->bandwidth_hz; dib3000mc_set_bandwidth(state, BANDWIDTH_TO_KHZ(fep->bandwidth_hz)); /* maybe the parameter has been changed */ state->sfn_workaround_active = buggy_sfn_workaround; if (fe->ops.tuner_ops.set_params) { fe->ops.tuner_ops.set_params(fe); msleep(100); } if (fep->transmission_mode == TRANSMISSION_MODE_AUTO || fep->guard_interval == GUARD_INTERVAL_AUTO || fep->modulation == QAM_AUTO || fep->code_rate_HP == FEC_AUTO) { int i = 1000, found; dib3000mc_autosearch_start(fe); do { msleep(1); found = dib3000mc_autosearch_is_irq(fe); } while (found == 0 && i--); dprintk("autosearch returns: %d\n",found); if (found == 0 || found == 1) return 0; // no channel found dib3000mc_get_frontend(fe, fep); } ret = dib3000mc_tune(fe); /* make this a config parameter */ dib3000mc_set_output_mode(state, OUTMODE_MPEG2_FIFO); return ret; } static int dib3000mc_read_status(struct dvb_frontend *fe, enum fe_status *stat) { struct dib3000mc_state *state = fe->demodulator_priv; u16 lock = dib3000mc_read_word(state, 509); *stat = 0; if (lock & 0x8000) *stat |= FE_HAS_SIGNAL; if (lock & 0x3000) *stat |= FE_HAS_CARRIER; if (lock & 0x0100) *stat |= FE_HAS_VITERBI; if (lock & 0x0010) *stat |= FE_HAS_SYNC; if (lock & 0x0008) *stat |= FE_HAS_LOCK; return 0; } static int dib3000mc_read_ber(struct dvb_frontend *fe, u32 *ber) { struct dib3000mc_state *state = fe->demodulator_priv; *ber = (dib3000mc_read_word(state, 500) << 16) | dib3000mc_read_word(state, 501); return 0; } static int dib3000mc_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) { struct dib3000mc_state *state = fe->demodulator_priv; *unc = dib3000mc_read_word(state, 508); return 0; } static int dib3000mc_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { struct dib3000mc_state *state = fe->demodulator_priv; u16 val = dib3000mc_read_word(state, 392); *strength = 65535 - val; return 0; } static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr) { *snr = 0x0000; return 0; } static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) { tune->min_delay_ms = 1000; return 0; } static void dib3000mc_release(struct dvb_frontend *fe) { struct dib3000mc_state *state = fe->demodulator_priv; dibx000_exit_i2c_master(&state->i2c_master); kfree(state); } int dib3000mc_pid_control(struct dvb_frontend *fe, int index, int pid,int onoff) { struct dib3000mc_state *state = fe->demodulator_priv; dib3000mc_write_word(state, 212 + index, onoff ? (1 << 13) | pid : 0); return 0; } EXPORT_SYMBOL(dib3000mc_pid_control); int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff) { struct dib3000mc_state *state = fe->demodulator_priv; u16 tmp = dib3000mc_read_word(state, 206) & ~(1 << 4); tmp |= (onoff << 4); return dib3000mc_write_word(state, 206, tmp); } EXPORT_SYMBOL(dib3000mc_pid_parse); void dib3000mc_set_config(struct dvb_frontend *fe, struct dib3000mc_config *cfg) { struct dib3000mc_state *state = fe->demodulator_priv; state->cfg = cfg; } EXPORT_SYMBOL(dib3000mc_set_config); int dib3000mc_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib3000mc_config cfg[]) { struct dib3000mc_state *dmcst; int k; u8 new_addr; static const u8 DIB3000MC_I2C_ADDRESS[] = { 20, 22, 24, 26 }; dmcst = kzalloc_obj(struct dib3000mc_state); if (dmcst == NULL) return -ENOMEM; dmcst->i2c_adap = i2c; for (k = no_of_demods-1; k >= 0; k--) { dmcst->cfg = &cfg[k]; /* designated i2c address */ new_addr = DIB3000MC_I2C_ADDRESS[k]; dmcst->i2c_addr = new_addr; if (dib3000mc_identify(dmcst) != 0) { dmcst->i2c_addr = default_addr; if (dib3000mc_identify(dmcst) != 0) { dprintk("-E- DiB3000P/MC #%d: not identified\n", k); kfree(dmcst); return -ENODEV; } } dib3000mc_set_output_mode(dmcst, OUTMODE_MPEG2_PAR_CONT_CLK); // set new i2c address and force divstr (Bit 1) to value 0 (Bit 0) dib3000mc_write_word(dmcst, 1024, (new_addr << 3) | 0x1); dmcst->i2c_addr = new_addr; } for (k = 0; k < no_of_demods; k++) { dmcst->cfg = &cfg[k]; dmcst->i2c_addr = DIB3000MC_I2C_ADDRESS[k]; dib3000mc_write_word(dmcst, 1024, dmcst->i2c_addr << 3); /* turn off data output */ dib3000mc_set_output_mode(dmcst, OUTMODE_HIGH_Z); } kfree(dmcst); return 0; } EXPORT_SYMBOL(dib3000mc_i2c_enumeration); static const struct dvb_frontend_ops dib3000mc_ops; struct dvb_frontend * dib3000mc_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib3000mc_config *cfg) { struct dvb_frontend *demod; struct dib3000mc_state *st; st = kzalloc_obj(struct dib3000mc_state); if (st == NULL) return NULL; st->cfg = cfg; st->i2c_adap = i2c_adap; st->i2c_addr = i2c_addr; demod = &st->demod; demod->demodulator_priv = st; memcpy(&st->demod.ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops)); if (dib3000mc_identify(st) != 0) goto error; dibx000_init_i2c_master(&st->i2c_master, DIB3000MC, st->i2c_adap, st->i2c_addr); dib3000mc_write_word(st, 1037, 0x3130); return demod; error: kfree(st); return NULL; } EXPORT_SYMBOL_GPL(dib3000mc_attach); static const struct dvb_frontend_ops dib3000mc_ops = { .delsys = { SYS_DVBT }, .info = { .name = "DiBcom 3000MC/P", .frequency_min_hz = 44250 * kHz, .frequency_max_hz = 867250 * kHz, .frequency_stepsize_hz = 62500, .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_RECOVER | FE_CAN_HIERARCHY_AUTO, }, .release = dib3000mc_release, .init = dib3000mc_init, .sleep = dib3000mc_sleep, .set_frontend = dib3000mc_set_frontend, .get_tune_settings = dib3000mc_fe_get_tune_settings, .get_frontend = dib3000mc_get_frontend, .read_status = dib3000mc_read_status, .read_ber = dib3000mc_read_ber, .read_signal_strength = dib3000mc_read_signal_strength, .read_snr = dib3000mc_read_snr, .read_ucblocks = dib3000mc_read_unc_blocks, }; MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); MODULE_DESCRIPTION("Driver for the DiBcom 3000MC/P COFDM demodulator"); MODULE_LICENSE("GPL"); |
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1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2011 Instituto Nokia de Tecnologia * * Authors: * Lauro Ramos Venancio <lauro.venancio@openbossa.org> * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> * * Vendor commands implementation based on net/wireless/nl80211.c * which is: * * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH */ #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__ #include <net/genetlink.h> #include <linux/nfc.h> #include <linux/slab.h> #include "nfc.h" #include "llcp.h" static const struct genl_multicast_group nfc_genl_mcgrps[] = { { .name = NFC_GENL_MCAST_EVENT_NAME, }, }; static struct genl_family nfc_genl_family; static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = { [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 }, [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING, .len = NFC_DEVICE_NAME_MAXSIZE }, [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 }, [NFC_ATTR_TARGET_INDEX] = { .type = NLA_U32 }, [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, [NFC_ATTR_RF_MODE] = { .type = NLA_U8 }, [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 }, [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 }, [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 }, [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED }, [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING, .len = NFC_FIRMWARE_NAME_MAXSIZE }, [NFC_ATTR_SE_INDEX] = { .type = NLA_U32 }, [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, [NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 }, [NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, }; static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { [NFC_SDP_ATTR_URI] = { .type = NLA_STRING, .len = U8_MAX - 4 }, [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, }; static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target, struct netlink_callback *cb, int flags) { void *hdr; hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, &nfc_genl_family, flags, NFC_CMD_GET_TARGET); if (!hdr) return -EMSGSIZE; genl_dump_check_consistent(cb, hdr); if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) goto nla_put_failure; if (target->nfcid1_len > 0 && nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, target->nfcid1)) goto nla_put_failure; if (target->sensb_res_len > 0 && nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, target->sensb_res)) goto nla_put_failure; if (target->sensf_res_len > 0 && nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, target->sensf_res)) goto nla_put_failure; if (target->is_iso15693) { if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID, target->iso15693_dsfid) || nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID, sizeof(target->iso15693_uid), target->iso15693_uid)) goto nla_put_failure; } if (target->ats_len > 0 && nla_put(msg, NFC_ATTR_TARGET_ATS, target->ats_len, target->ats)) goto nla_put_failure; genlmsg_end(msg, hdr); return 0; nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) { const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct nfc_dev *dev; u32 idx; if (!info->info.attrs[NFC_ATTR_DEVICE_INDEX]) return ERR_PTR(-EINVAL); idx = nla_get_u32(info->info.attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return ERR_PTR(-ENODEV); return dev; } static int nfc_genl_dump_targets(struct sk_buff *skb, struct netlink_callback *cb) { int i = cb->args[0]; struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; int rc; if (!dev) { dev = __get_device_from_cb(cb); if (IS_ERR(dev)) return PTR_ERR(dev); cb->args[1] = (long) dev; } device_lock(&dev->dev); cb->seq = dev->targets_generation; while (i < dev->n_targets) { rc = nfc_genl_send_target(skb, &dev->targets[i], cb, NLM_F_MULTI); if (rc < 0) break; i++; } device_unlock(&dev->dev); cb->args[0] = i; return skb->len; } static int nfc_genl_dump_targets_done(struct netlink_callback *cb) { struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; if (dev) nfc_put_device(dev); return 0; } int nfc_genl_targets_found(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; dev->genl_data.poll_req_portid = 0; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TARGETS_FOUND); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TARGET_LOST); if (!hdr) goto free_msg; if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TM_ACTIVATED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_tm_deactivated(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TM_DEACTIVATED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg) { if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) || nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) return -1; return 0; } int nfc_genl_device_added(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_DEVICE_ADDED); if (!hdr) goto free_msg; if (nfc_genl_setup_device_added(dev, msg)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_device_removed(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_DEVICE_REMOVED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) { struct sk_buff *msg; struct nlattr *sdp_attr, *uri_attr; struct nfc_llcp_sdp_tlv *sdres; struct hlist_node *n; void *hdr; int rc = -EMSGSIZE; int i; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_LLC_SDRES); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP); if (sdp_attr == NULL) { rc = -ENOMEM; goto nla_put_failure; } i = 1; hlist_for_each_entry_safe(sdres, n, sdres_list, node) { pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap); uri_attr = nla_nest_start_noflag(msg, i++); if (uri_attr == NULL) { rc = -ENOMEM; goto nla_put_failure; } if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap)) goto nla_put_failure; if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri)) goto nla_put_failure; nla_nest_end(msg, uri_attr); hlist_del(&sdres->node); nfc_llcp_free_sdp_tlv(sdres); } nla_nest_end(msg, sdp_attr); genlmsg_end(msg, hdr); return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); nla_put_failure: free_msg: nlmsg_free(msg); nfc_llcp_free_sdp_tlv_list(sdres_list); return rc; } int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_SE_ADDED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || nla_put_u8(msg, NFC_ATTR_SE_TYPE, type)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_SE_REMOVED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx, struct nfc_evt_transaction *evt_transaction) { struct nfc_se *se; struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_SE_TRANSACTION); if (!hdr) goto free_msg; se = nfc_find_se(dev, se_idx); if (!se) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) || nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len, evt_transaction->aid) || nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len, evt_transaction->params)) goto nla_put_failure; /* evt_transaction is no more used */ devm_kfree(&dev->dev, evt_transaction); genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: /* evt_transaction is no more used */ devm_kfree(&dev->dev, evt_transaction); nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx) { const struct nfc_se *se; struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_SE_CONNECTIVITY); if (!hdr) goto free_msg; se = nfc_find_se(dev, se_idx); if (!se) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) || nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, u32 portid, u32 seq, struct netlink_callback *cb, int flags) { void *hdr; hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, NFC_CMD_GET_DEVICE); if (!hdr) return -EMSGSIZE; if (cb) genl_dump_check_consistent(cb, hdr); if (nfc_genl_setup_device_added(dev, msg)) goto nla_put_failure; genlmsg_end(msg, hdr); return 0; nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static int nfc_genl_dump_devices(struct sk_buff *skb, struct netlink_callback *cb) { struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; bool first_call = false; if (!iter) { first_call = true; iter = kmalloc_obj(struct class_dev_iter); if (!iter) return -ENOMEM; cb->args[0] = (long) iter; } mutex_lock(&nfc_devlist_mutex); cb->seq = nfc_devlist_generation; if (first_call) { nfc_device_iter_init(iter); dev = nfc_device_iter_next(iter); } while (dev) { int rc; rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); if (rc < 0) break; dev = nfc_device_iter_next(iter); } mutex_unlock(&nfc_devlist_mutex); cb->args[1] = (long) dev; return skb->len; } static int nfc_genl_dump_devices_done(struct netlink_callback *cb) { struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; if (iter) { nfc_device_iter_exit(iter); kfree(iter); } return 0; } int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, u8 comm_mode, u8 rf_mode) { struct sk_buff *msg; void *hdr; pr_debug("DEP link is up\n"); msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; if (rf_mode == NFC_RF_INITIATOR && nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) goto nla_put_failure; if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) || nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode)) goto nla_put_failure; genlmsg_end(msg, hdr); dev->dep_link_up = true; genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_dep_link_down_event(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; pr_debug("DEP link is down\n"); msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_DOWN); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *msg; struct nfc_dev *dev; u32 idx; int rc = -ENOBUFS; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) { rc = -ENOMEM; goto out_putdev; } rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, NULL, 0); if (rc < 0) goto out_free; nfc_put_device(dev); return genlmsg_reply(msg, info); out_free: nlmsg_free(msg); out_putdev: nfc_put_device(dev); return rc; } static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_dev_up(dev); nfc_put_device(dev); return rc; } static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_dev_down(dev); nfc_put_device(dev); return rc; } static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; u32 im_protocols = 0, tm_protocols = 0; pr_debug("Poll start\n"); if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && !info->attrs[NFC_ATTR_PROTOCOLS]) && !info->attrs[NFC_ATTR_TM_PROTOCOLS])) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); else if (info->attrs[NFC_ATTR_PROTOCOLS]) im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; mutex_lock(&dev->genl_data.genl_data_mutex); rc = nfc_start_poll(dev, im_protocols, tm_protocols); if (!rc) dev->genl_data.poll_req_portid = info->snd_portid; mutex_unlock(&dev->genl_data.genl_data_mutex); nfc_put_device(dev); return rc; } static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; device_lock(&dev->dev); if (!dev->polling) { device_unlock(&dev->dev); nfc_put_device(dev); return -EINVAL; } device_unlock(&dev->dev); mutex_lock(&dev->genl_data.genl_data_mutex); if (dev->genl_data.poll_req_portid != info->snd_portid) { rc = -EBUSY; goto out; } rc = nfc_stop_poll(dev); dev->genl_data.poll_req_portid = 0; out: mutex_unlock(&dev->genl_data.genl_data_mutex); nfc_put_device(dev); return rc; } static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; u32 device_idx, target_idx, protocol; int rc; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_TARGET_INDEX] || !info->attrs[NFC_ATTR_PROTOCOLS]) return -EINVAL; device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(device_idx); if (!dev) return -ENODEV; target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); rc = nfc_activate_target(dev, target_idx, protocol); nfc_put_device(dev); return rc; } static int nfc_genl_deactivate_target(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; u32 device_idx, target_idx; int rc; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_TARGET_INDEX]) return -EINVAL; device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(device_idx); if (!dev) return -ENODEV; target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP); nfc_put_device(dev); return rc; } static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc, tgt_idx; u32 idx; u8 comm; pr_debug("DEP link up\n"); if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_COMM_MODE]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); if (!info->attrs[NFC_ATTR_TARGET_INDEX]) tgt_idx = NFC_TARGET_IDX_ANY; else tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]); if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) return -EINVAL; dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_dep_link_up(dev, tgt_idx, comm); nfc_put_device(dev); return rc; } static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_dep_link_down(dev); nfc_put_device(dev); return rc; } static int nfc_genl_send_params(struct sk_buff *msg, struct nfc_llcp_local *local, u32 portid, u32 seq) { void *hdr; hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0, NFC_CMD_LLC_GET_PARAMS); if (!hdr) return -EMSGSIZE; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) || nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) || nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) || nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux))) goto nla_put_failure; genlmsg_end(msg, hdr); return 0; nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; struct nfc_llcp_local *local; int rc = 0; struct sk_buff *msg = NULL; u32 idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; device_lock(&dev->dev); local = nfc_llcp_find_local(dev); if (!local) { rc = -ENODEV; goto exit; } msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) { rc = -ENOMEM; goto put_local; } rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq); put_local: nfc_llcp_local_put(local); exit: device_unlock(&dev->dev); nfc_put_device(dev); if (rc < 0) { if (msg) nlmsg_free(msg); return rc; } return genlmsg_reply(msg, info); } static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; struct nfc_llcp_local *local; u8 rw = 0; u16 miux = 0; u32 idx; int rc = 0; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] && !info->attrs[NFC_ATTR_LLC_PARAM_RW] && !info->attrs[NFC_ATTR_LLC_PARAM_MIUX])) return -EINVAL; if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) { rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]); if (rw > LLCP_MAX_RW) return -EINVAL; } if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) { miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]); if (miux > LLCP_MAX_MIUX) return -EINVAL; } idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; device_lock(&dev->dev); local = nfc_llcp_find_local(dev); if (!local) { rc = -ENODEV; goto exit; } if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) { if (dev->dep_link_up) { rc = -EINPROGRESS; goto put_local; } local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]); } if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) local->rw = rw; if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) local->miux = cpu_to_be16(miux); put_local: nfc_llcp_local_put(local); exit: device_unlock(&dev->dev); nfc_put_device(dev); return rc; } static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; struct nfc_llcp_local *local; struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1]; u32 idx; u8 tid; char *uri; int rc = 0, rem; size_t uri_len, tlvs_len; struct hlist_head sdreq_list; struct nfc_llcp_sdp_tlv *sdreq; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_LLC_SDP]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; device_lock(&dev->dev); if (dev->dep_link_up == false) { rc = -ENOLINK; goto exit; } local = nfc_llcp_find_local(dev); if (!local) { rc = -ENODEV; goto exit; } INIT_HLIST_HEAD(&sdreq_list); tlvs_len = 0; nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) { rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX, attr, nfc_sdp_genl_policy, info->extack); if (rc != 0) { rc = -EINVAL; goto put_local; } if (!sdp_attrs[NFC_SDP_ATTR_URI]) continue; uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]); if (uri_len == 0) continue; uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]); if (*uri == 0) continue; tid = local->sdreq_next_tid++; sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len); if (sdreq == NULL) { rc = -ENOMEM; goto put_local; } tlvs_len += sdreq->tlv_len; hlist_add_head(&sdreq->node, &sdreq_list); } if (hlist_empty(&sdreq_list)) { rc = -EINVAL; goto put_local; } rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len); put_local: nfc_llcp_local_put(local); exit: device_unlock(&dev->dev); nfc_put_device(dev); return rc; } static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1]; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; nla_strscpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME], sizeof(firmware_name)); rc = nfc_fw_download(dev, firmware_name); nfc_put_device(dev); return rc; } int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, u32 result) { struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_FW_DOWNLOAD); if (!hdr) goto free_msg; if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); return 0; nla_put_failure: free_msg: nlmsg_free(msg); return -EMSGSIZE; } static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx, se_idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_SE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_enable_se(dev, se_idx); nfc_put_device(dev); return rc; } static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx, se_idx; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_SE_INDEX]) return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); dev = nfc_get_device(idx); if (!dev) return -ENODEV; rc = nfc_disable_se(dev, se_idx); nfc_put_device(dev); return rc; } static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev, u32 portid, u32 seq, struct netlink_callback *cb, int flags) { void *hdr; struct nfc_se *se, *n; list_for_each_entry_safe(se, n, &dev->secure_elements, list) { hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, NFC_CMD_GET_SE); if (!hdr) goto nla_put_failure; if (cb) genl_dump_check_consistent(cb, hdr); if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) || nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type)) goto nla_put_failure; genlmsg_end(msg, hdr); } return 0; nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static int nfc_genl_dump_ses(struct sk_buff *skb, struct netlink_callback *cb) { struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; bool first_call = false; if (!iter) { first_call = true; iter = kmalloc_obj(struct class_dev_iter); if (!iter) return -ENOMEM; cb->args[0] = (long) iter; } mutex_lock(&nfc_devlist_mutex); cb->seq = nfc_devlist_generation; if (first_call) { nfc_device_iter_init(iter); dev = nfc_device_iter_next(iter); } while (dev) { int rc; rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); if (rc < 0) break; dev = nfc_device_iter_next(iter); } mutex_unlock(&nfc_devlist_mutex); cb->args[1] = (long) dev; return skb->len; } static int nfc_genl_dump_ses_done(struct netlink_callback *cb) { struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0]; if (iter) { nfc_device_iter_exit(iter); kfree(iter); } return 0; } static int nfc_se_io(struct nfc_dev *dev, u32 se_idx, u8 *apdu, size_t apdu_length, se_io_cb_t cb, void *cb_context) { struct nfc_se *se; int rc; pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx); device_lock(&dev->dev); if (!device_is_registered(&dev->dev)) { rc = -ENODEV; goto error; } if (!dev->dev_up) { rc = -ENODEV; goto error; } if (!dev->ops->se_io) { rc = -EOPNOTSUPP; goto error; } se = nfc_find_se(dev, se_idx); if (!se) { rc = -EINVAL; goto error; } if (se->state != NFC_SE_ENABLED) { rc = -ENODEV; goto error; } rc = dev->ops->se_io(dev, se_idx, apdu, apdu_length, cb, cb_context); device_unlock(&dev->dev); return rc; error: device_unlock(&dev->dev); kfree(cb_context); return rc; } struct se_io_ctx { u32 dev_idx; u32 se_idx; }; static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) { struct se_io_ctx *ctx = context; struct sk_buff *msg; void *hdr; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) { kfree(ctx); return; } hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_SE_IO); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) || nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) || nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu)) goto nla_put_failure; genlmsg_end(msg, hdr); genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); kfree(ctx); return; nla_put_failure: free_msg: nlmsg_free(msg); kfree(ctx); return; } static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; struct se_io_ctx *ctx; u32 dev_idx, se_idx; u8 *apdu; size_t apdu_len; int rc; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_SE_INDEX] || !info->attrs[NFC_ATTR_SE_APDU]) return -EINVAL; dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]); dev = nfc_get_device(dev_idx); if (!dev) return -ENODEV; if (!dev->ops || !dev->ops->se_io) { rc = -EOPNOTSUPP; goto put_dev; } apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]); if (apdu_len == 0) { rc = -EINVAL; goto put_dev; } apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]); ctx = kzalloc_obj(struct se_io_ctx); if (!ctx) { rc = -ENOMEM; goto put_dev; } ctx->dev_idx = dev_idx; ctx->se_idx = se_idx; rc = nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx); put_dev: nfc_put_device(dev); return rc; } static int nfc_genl_vendor_cmd(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; const struct nfc_vendor_cmd *cmd; u32 dev_idx, vid, subcmd; u8 *data; size_t data_len; int i, err; if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_VENDOR_ID] || !info->attrs[NFC_ATTR_VENDOR_SUBCMD]) return -EINVAL; dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]); subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]); dev = nfc_get_device(dev_idx); if (!dev) return -ENODEV; if (!dev->vendor_cmds || !dev->n_vendor_cmds) { err = -ENODEV; goto put_dev; } if (info->attrs[NFC_ATTR_VENDOR_DATA]) { data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]); data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]); if (data_len == 0) { err = -EINVAL; goto put_dev; } } else { data = NULL; data_len = 0; } for (i = 0; i < dev->n_vendor_cmds; i++) { cmd = &dev->vendor_cmds[i]; if (cmd->vendor_id != vid || cmd->subcmd != subcmd) continue; dev->cur_cmd_info = info; err = cmd->doit(dev, data, data_len); dev->cur_cmd_info = NULL; goto put_dev; } err = -EOPNOTSUPP; put_dev: nfc_put_device(dev); return err; } /* message building helper */ static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq, int flags, u8 cmd) { /* since there is no private header just add the generic one */ return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd); } static struct sk_buff * __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen, u32 portid, u32 seq, enum nfc_attrs attr, u32 oui, u32 subcmd, gfp_t gfp) { struct sk_buff *skb; void *hdr; skb = nlmsg_new(approxlen + 100, gfp); if (!skb) return NULL; hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR); if (!hdr) { kfree_skb(skb); return NULL; } if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui)) goto nla_put_failure; if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd)) goto nla_put_failure; ((void **)skb->cb)[0] = dev; ((void **)skb->cb)[1] = hdr; return skb; nla_put_failure: kfree_skb(skb); return NULL; } struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev, enum nfc_attrs attr, u32 oui, u32 subcmd, int approxlen) { if (WARN_ON(!dev->cur_cmd_info)) return NULL; return __nfc_alloc_vendor_cmd_skb(dev, approxlen, dev->cur_cmd_info->snd_portid, dev->cur_cmd_info->snd_seq, attr, oui, subcmd, GFP_KERNEL); } EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb); int nfc_vendor_cmd_reply(struct sk_buff *skb) { struct nfc_dev *dev = ((void **)skb->cb)[0]; void *hdr = ((void **)skb->cb)[1]; /* clear CB data for netlink core to own from now on */ memset(skb->cb, 0, sizeof(skb->cb)); if (WARN_ON(!dev->cur_cmd_info)) { kfree_skb(skb); return -EINVAL; } genlmsg_end(skb, hdr); return genlmsg_reply(skb, dev->cur_cmd_info); } EXPORT_SYMBOL(nfc_vendor_cmd_reply); static const struct genl_ops nfc_genl_ops[] = { { .cmd = NFC_CMD_GET_DEVICE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_get_device, .dumpit = nfc_genl_dump_devices, .done = nfc_genl_dump_devices_done, }, { .cmd = NFC_CMD_DEV_UP, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_dev_up, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_DEV_DOWN, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_dev_down, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_START_POLL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_start_poll, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_STOP_POLL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_stop_poll, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_DEP_LINK_UP, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_dep_link_up, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_DEP_LINK_DOWN, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_dep_link_down, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_GET_TARGET, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP_STRICT, .dumpit = nfc_genl_dump_targets, .done = nfc_genl_dump_targets_done, }, { .cmd = NFC_CMD_LLC_GET_PARAMS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_llc_get_params, }, { .cmd = NFC_CMD_LLC_SET_PARAMS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_llc_set_params, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_LLC_SDREQ, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_llc_sdreq, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_FW_DOWNLOAD, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_fw_download, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_ENABLE_SE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_enable_se, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_DISABLE_SE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_disable_se, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_GET_SE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .dumpit = nfc_genl_dump_ses, .done = nfc_genl_dump_ses_done, }, { .cmd = NFC_CMD_SE_IO, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_se_io, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_ACTIVATE_TARGET, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_activate_target, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_VENDOR, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_vendor_cmd, .flags = GENL_ADMIN_PERM, }, { .cmd = NFC_CMD_DEACTIVATE_TARGET, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = nfc_genl_deactivate_target, .flags = GENL_ADMIN_PERM, }, }; static struct genl_family nfc_genl_family __ro_after_init = { .hdrsize = 0, .name = NFC_GENL_NAME, .version = NFC_GENL_VERSION, .maxattr = NFC_ATTR_MAX, .policy = nfc_genl_policy, .module = THIS_MODULE, .ops = nfc_genl_ops, .n_ops = ARRAY_SIZE(nfc_genl_ops), .resv_start_op = NFC_CMD_DEACTIVATE_TARGET + 1, .mcgrps = nfc_genl_mcgrps, .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps), }; struct urelease_work { struct work_struct w; u32 portid; }; static void nfc_urelease_event_work(struct work_struct *work) { struct urelease_work *w = container_of(work, struct urelease_work, w); struct class_dev_iter iter; struct nfc_dev *dev; pr_debug("portid %d\n", w->portid); mutex_lock(&nfc_devlist_mutex); nfc_device_iter_init(&iter); dev = nfc_device_iter_next(&iter); while (dev) { mutex_lock(&dev->genl_data.genl_data_mutex); if (dev->genl_data.poll_req_portid == w->portid) { nfc_stop_poll(dev); dev->genl_data.poll_req_portid = 0; } mutex_unlock(&dev->genl_data.genl_data_mutex); dev = nfc_device_iter_next(&iter); } nfc_device_iter_exit(&iter); mutex_unlock(&nfc_devlist_mutex); kfree(w); } static int nfc_genl_rcv_nl_event(struct notifier_block *this, unsigned long event, void *ptr) { struct netlink_notify *n = ptr; struct urelease_work *w; if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC) goto out; pr_debug("NETLINK_URELEASE event from id %d\n", n->portid); w = kmalloc_obj(*w, GFP_ATOMIC); if (w) { INIT_WORK(&w->w, nfc_urelease_event_work); w->portid = n->portid; schedule_work(&w->w); } out: return NOTIFY_DONE; } void nfc_genl_data_init(struct nfc_genl_data *genl_data) { genl_data->poll_req_portid = 0; mutex_init(&genl_data->genl_data_mutex); } void nfc_genl_data_exit(struct nfc_genl_data *genl_data) { mutex_destroy(&genl_data->genl_data_mutex); } static struct notifier_block nl_notifier = { .notifier_call = nfc_genl_rcv_nl_event, }; /** * nfc_genl_init() - Initialize netlink interface * * This initialization function registers the nfc netlink family. */ int __init nfc_genl_init(void) { int rc; rc = genl_register_family(&nfc_genl_family); if (rc) return rc; netlink_register_notifier(&nl_notifier); return 0; } /** * nfc_genl_exit() - Deinitialize netlink interface * * This exit function unregisters the nfc netlink family. */ void nfc_genl_exit(void) { netlink_unregister_notifier(&nl_notifier); genl_unregister_family(&nfc_genl_family); } |
| 2 2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | // SPDX-License-Identifier: GPL-2.0 #include <linux/errno.h> #include <linux/ip.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/skbuff.h> #include <linux/socket.h> #include <linux/types.h> #include <net/checksum.h> #include <net/ip.h> #include <net/ip6_fib.h> #include <net/lwtunnel.h> #include <net/protocol.h> #include <uapi/linux/ila.h> #include "ila.h" void ila_init_saved_csum(struct ila_params *p) { if (!p->locator_match.v64) return; p->csum_diff = compute_csum_diff8( (__be32 *)&p->locator, (__be32 *)&p->locator_match); } static __wsum get_csum_diff_iaddr(struct ila_addr *iaddr, struct ila_params *p) { if (p->locator_match.v64) return p->csum_diff; else return compute_csum_diff8((__be32 *)&p->locator, (__be32 *)&iaddr->loc); } static __wsum get_csum_diff(struct ipv6hdr *ip6h, struct ila_params *p) { return get_csum_diff_iaddr(ila_a2i(&ip6h->daddr), p); } static void ila_csum_do_neutral_fmt(struct ila_addr *iaddr, struct ila_params *p) { __sum16 *adjust = (__force __sum16 *)&iaddr->ident.v16[3]; __wsum diff, fval; diff = get_csum_diff_iaddr(iaddr, p); fval = (__force __wsum)(ila_csum_neutral_set(iaddr->ident) ? CSUM_NEUTRAL_FLAG : ~CSUM_NEUTRAL_FLAG); diff = csum_add(diff, fval); *adjust = ~csum_fold(csum_add(diff, csum_unfold(*adjust))); /* Flip the csum-neutral bit. Either we are doing a SIR->ILA * translation with ILA_CSUM_NEUTRAL_MAP as the csum_method * and the C-bit is not set, or we are doing an ILA-SIR * tranlsation and the C-bit is set. */ iaddr->ident.csum_neutral ^= 1; } static void ila_csum_do_neutral_nofmt(struct ila_addr *iaddr, struct ila_params *p) { __sum16 *adjust = (__force __sum16 *)&iaddr->ident.v16[3]; __wsum diff; diff = get_csum_diff_iaddr(iaddr, p); *adjust = ~csum_fold(csum_add(diff, csum_unfold(*adjust))); } static void ila_csum_adjust_transport(struct sk_buff *skb, struct ila_params *p) { size_t nhoff = sizeof(struct ipv6hdr); struct ipv6hdr *ip6h = ipv6_hdr(skb); __wsum diff; switch (ip6h->nexthdr) { case NEXTHDR_TCP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct tcphdr)))) { struct tcphdr *th = (struct tcphdr *) (skb_network_header(skb) + nhoff); diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&th->check, skb, diff, true, true); } break; case NEXTHDR_UDP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct udphdr)))) { struct udphdr *uh = (struct udphdr *) (skb_network_header(skb) + nhoff); if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) { diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&uh->check, skb, diff, true, true); if (!uh->check) uh->check = CSUM_MANGLED_0; } } break; case NEXTHDR_ICMP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct icmp6hdr)))) { struct icmp6hdr *ih = (struct icmp6hdr *) (skb_network_header(skb) + nhoff); diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&ih->icmp6_cksum, skb, diff, true, true); } break; } } void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p, bool sir2ila) { struct ipv6hdr *ip6h = ipv6_hdr(skb); struct ila_addr *iaddr = ila_a2i(&ip6h->daddr); switch (p->csum_mode) { case ILA_CSUM_ADJUST_TRANSPORT: ila_csum_adjust_transport(skb, p); break; case ILA_CSUM_NEUTRAL_MAP: if (sir2ila) { if (WARN_ON(ila_csum_neutral_set(iaddr->ident))) { /* Checksum flag should never be * set in a formatted SIR address. */ break; } } else if (!ila_csum_neutral_set(iaddr->ident)) { /* ILA to SIR translation and C-bit isn't * set so we're good. */ break; } ila_csum_do_neutral_fmt(iaddr, p); break; case ILA_CSUM_NEUTRAL_MAP_AUTO: ila_csum_do_neutral_nofmt(iaddr, p); break; case ILA_CSUM_NO_ACTION: break; } /* Now change destination address */ iaddr->loc = p->locator; } |
| 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 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1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 | // SPDX-License-Identifier: GPL-2.0-only /* * linux/net/sunrpc/sched.c * * Scheduling for synchronous and asynchronous RPC requests. * * Copyright (C) 1996 Olaf Kirch, <okir@monad.swb.de> * * TCP NFS related read + write fixes * (C) 1999 Dave Airlie, University of Limerick, Ireland <airlied@linux.ie> */ #include <linux/module.h> #include <linux/sched.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/mempool.h> #include <linux/smp.h> #include <linux/spinlock.h> #include <linux/mutex.h> #include <linux/freezer.h> #include <linux/sched/mm.h> #include <linux/sunrpc/clnt.h> #include <linux/sunrpc/metrics.h> #include "sunrpc.h" #define CREATE_TRACE_POINTS #include <trace/events/sunrpc.h> /* * RPC slabs and memory pools */ #define RPC_BUFFER_MAXSIZE (2048) #define RPC_BUFFER_POOLSIZE (8) #define RPC_TASK_POOLSIZE (8) static struct kmem_cache *rpc_task_slabp __read_mostly; static struct kmem_cache *rpc_buffer_slabp __read_mostly; static mempool_t *rpc_task_mempool __read_mostly; static mempool_t *rpc_buffer_mempool __read_mostly; static void rpc_async_schedule(struct work_struct *); static void rpc_release_task(struct rpc_task *task); static void __rpc_queue_timer_fn(struct work_struct *); /* * RPC tasks sit here while waiting for conditions to improve. */ static struct rpc_wait_queue delay_queue; /* * rpciod-related stuff */ struct workqueue_struct *rpciod_workqueue __read_mostly; struct workqueue_struct *xprtiod_workqueue __read_mostly; EXPORT_SYMBOL_GPL(xprtiod_workqueue); gfp_t rpc_task_gfp_mask(void) { if (current->flags & PF_WQ_WORKER) return GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN; return GFP_KERNEL; } EXPORT_SYMBOL_GPL(rpc_task_gfp_mask); bool rpc_task_set_rpc_status(struct rpc_task *task, int rpc_status) { if (cmpxchg(&task->tk_rpc_status, 0, rpc_status) == 0) return true; return false; } unsigned long rpc_task_timeout(const struct rpc_task *task) { unsigned long timeout = READ_ONCE(task->tk_timeout); if (timeout != 0) { unsigned long now = jiffies; if (time_before(now, timeout)) return timeout - now; } return 0; } EXPORT_SYMBOL_GPL(rpc_task_timeout); /* * Disable the timer for a given RPC task. Should be called with * queue->lock and bh_disabled in order to avoid races within * rpc_run_timer(). */ static void __rpc_disable_timer(struct rpc_wait_queue *queue, struct rpc_task *task) { if (list_empty(&task->u.tk_wait.timer_list)) return; task->tk_timeout = 0; list_del(&task->u.tk_wait.timer_list); if (list_empty(&queue->timer_list.list)) cancel_delayed_work(&queue->timer_list.dwork); } static void rpc_set_queue_timer(struct rpc_wait_queue *queue, unsigned long expires) { unsigned long now = jiffies; queue->timer_list.expires = expires; if (time_before_eq(expires, now)) expires = 0; else expires -= now; mod_delayed_work(rpciod_workqueue, &queue->timer_list.dwork, expires); } /* * Set up a timer for the current task. */ static void __rpc_add_timer(struct rpc_wait_queue *queue, struct rpc_task *task, unsigned long timeout) { task->tk_timeout = timeout; if (list_empty(&queue->timer_list.list) || time_before(timeout, queue->timer_list.expires)) rpc_set_queue_timer(queue, timeout); list_add(&task->u.tk_wait.timer_list, &queue->timer_list.list); } static void rpc_set_waitqueue_priority(struct rpc_wait_queue *queue, int priority) { if (queue->priority != priority) { queue->priority = priority; queue->nr = 1U << priority; } } static void rpc_reset_waitqueue_priority(struct rpc_wait_queue *queue) { rpc_set_waitqueue_priority(queue, queue->maxpriority); } /* * Add a request to a queue list */ static void __rpc_list_enqueue_task(struct list_head *q, struct rpc_task *task) { struct rpc_task *t; list_for_each_entry(t, q, u.tk_wait.list) { if (t->tk_owner == task->tk_owner) { list_add_tail(&task->u.tk_wait.links, &t->u.tk_wait.links); /* Cache the queue head in task->u.tk_wait.list */ task->u.tk_wait.list.next = q; task->u.tk_wait.list.prev = NULL; return; } } INIT_LIST_HEAD(&task->u.tk_wait.links); list_add_tail(&task->u.tk_wait.list, q); } /* * Remove request from a queue list */ static void __rpc_list_dequeue_task(struct rpc_task *task) { struct list_head *q; struct rpc_task *t; if (task->u.tk_wait.list.prev == NULL) { list_del(&task->u.tk_wait.links); return; } if (!list_empty(&task->u.tk_wait.links)) { t = list_first_entry(&task->u.tk_wait.links, struct rpc_task, u.tk_wait.links); /* Assume __rpc_list_enqueue_task() cached the queue head */ q = t->u.tk_wait.list.next; list_add_tail(&t->u.tk_wait.list, q); list_del(&task->u.tk_wait.links); } list_del(&task->u.tk_wait.list); } /* * Add new request to a priority queue. */ static void __rpc_add_wait_queue_priority(struct rpc_wait_queue *queue, struct rpc_task *task, unsigned char queue_priority) { if (unlikely(queue_priority > queue->maxpriority)) queue_priority = queue->maxpriority; __rpc_list_enqueue_task(&queue->tasks[queue_priority], task); } /* * Add new request to wait queue. */ static void __rpc_add_wait_queue(struct rpc_wait_queue *queue, struct rpc_task *task, unsigned char queue_priority) { INIT_LIST_HEAD(&task->u.tk_wait.timer_list); if (RPC_IS_PRIORITY(queue)) __rpc_add_wait_queue_priority(queue, task, queue_priority); else list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]); task->tk_waitqueue = queue; queue->qlen++; /* barrier matches the read in rpc_wake_up_task_queue_locked() */ smp_wmb(); rpc_set_queued(task); } /* * Remove request from a priority queue. */ static void __rpc_remove_wait_queue_priority(struct rpc_task *task) { __rpc_list_dequeue_task(task); } /* * Remove request from queue. * Note: must be called with spin lock held. */ static void __rpc_remove_wait_queue(struct rpc_wait_queue *queue, struct rpc_task *task) { __rpc_disable_timer(queue, task); if (RPC_IS_PRIORITY(queue)) __rpc_remove_wait_queue_priority(task); else list_del(&task->u.tk_wait.list); queue->qlen--; } static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname, unsigned char nr_queues) { int i; spin_lock_init(&queue->lock); for (i = 0; i < ARRAY_SIZE(queue->tasks); i++) INIT_LIST_HEAD(&queue->tasks[i]); queue->maxpriority = nr_queues - 1; rpc_reset_waitqueue_priority(queue); queue->qlen = 0; queue->timer_list.expires = 0; INIT_DELAYED_WORK(&queue->timer_list.dwork, __rpc_queue_timer_fn); INIT_LIST_HEAD(&queue->timer_list.list); rpc_assign_waitqueue_name(queue, qname); } void rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname) { __rpc_init_priority_wait_queue(queue, qname, RPC_NR_PRIORITY); } EXPORT_SYMBOL_GPL(rpc_init_priority_wait_queue); void rpc_init_wait_queue(struct rpc_wait_queue *queue, const char *qname) { __rpc_init_priority_wait_queue(queue, qname, 1); } EXPORT_SYMBOL_GPL(rpc_init_wait_queue); void rpc_destroy_wait_queue(struct rpc_wait_queue *queue) { cancel_delayed_work_sync(&queue->timer_list.dwork); } EXPORT_SYMBOL_GPL(rpc_destroy_wait_queue); static int rpc_wait_bit_killable(struct wait_bit_key *key, int mode) { schedule(); if (signal_pending_state(mode, current)) return -ERESTARTSYS; return 0; } #if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS) static void rpc_task_set_debuginfo(struct rpc_task *task) { struct rpc_clnt *clnt = task->tk_client; /* Might be a task carrying a reverse-direction operation */ if (!clnt) { static atomic_t rpc_pid; task->tk_pid = atomic_inc_return(&rpc_pid); return; } task->tk_pid = atomic_inc_return(&clnt->cl_pid); } #else static inline void rpc_task_set_debuginfo(struct rpc_task *task) { } #endif static void rpc_set_active(struct rpc_task *task) { rpc_task_set_debuginfo(task); set_bit(RPC_TASK_ACTIVE, &task->tk_runstate); trace_rpc_task_begin(task, NULL); } /* * Mark an RPC call as having completed by clearing the 'active' bit * and then waking up all tasks that were sleeping. */ static int rpc_complete_task(struct rpc_task *task) { void *m = &task->tk_runstate; wait_queue_head_t *wq = bit_waitqueue(m, RPC_TASK_ACTIVE); struct wait_bit_key k = __WAIT_BIT_KEY_INITIALIZER(m, RPC_TASK_ACTIVE); unsigned long flags; int ret; trace_rpc_task_complete(task, NULL); spin_lock_irqsave(&wq->lock, flags); clear_bit(RPC_TASK_ACTIVE, &task->tk_runstate); ret = atomic_dec_and_test(&task->tk_count); if (waitqueue_active(wq)) __wake_up_locked_key(wq, TASK_NORMAL, &k); spin_unlock_irqrestore(&wq->lock, flags); return ret; } /* * Allow callers to wait for completion of an RPC call * * Note the use of out_of_line_wait_on_bit() rather than wait_on_bit() * to enforce taking of the wq->lock and hence avoid races with * rpc_complete_task(). */ int rpc_wait_for_completion_task(struct rpc_task *task) { return out_of_line_wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE, rpc_wait_bit_killable, TASK_KILLABLE|TASK_FREEZABLE_UNSAFE); } EXPORT_SYMBOL_GPL(rpc_wait_for_completion_task); /* * Make an RPC task runnable. * * Note: If the task is ASYNC, and is being made runnable after sitting on an * rpc_wait_queue, this must be called with the queue spinlock held to protect * the wait queue operation. * Note the ordering of rpc_test_and_set_running() and rpc_clear_queued(), * which is needed to ensure that __rpc_execute() doesn't loop (due to the * lockless RPC_IS_QUEUED() test) before we've had a chance to test * the RPC_TASK_RUNNING flag. */ static void rpc_make_runnable(struct workqueue_struct *wq, struct rpc_task *task) { bool need_wakeup = !rpc_test_and_set_running(task); rpc_clear_queued(task); if (!need_wakeup) return; if (RPC_IS_ASYNC(task)) { INIT_WORK(&task->u.tk_work, rpc_async_schedule); queue_work(wq, &task->u.tk_work); } else { smp_mb__after_atomic(); wake_up_bit(&task->tk_runstate, RPC_TASK_QUEUED); } } /* * Prepare for sleeping on a wait queue. * By always appending tasks to the list we ensure FIFO behavior. * NB: An RPC task will only receive interrupt-driven events as long * as it's on a wait queue. */ static void __rpc_do_sleep_on_priority(struct rpc_wait_queue *q, struct rpc_task *task, unsigned char queue_priority) { trace_rpc_task_sleep(task, q); __rpc_add_wait_queue(q, task, queue_priority); } static void __rpc_sleep_on_priority(struct rpc_wait_queue *q, struct rpc_task *task, unsigned char queue_priority) { if (WARN_ON_ONCE(RPC_IS_QUEUED(task))) return; __rpc_do_sleep_on_priority(q, task, queue_priority); } static void __rpc_sleep_on_priority_timeout(struct rpc_wait_queue *q, struct rpc_task *task, unsigned long timeout, unsigned char queue_priority) { if (WARN_ON_ONCE(RPC_IS_QUEUED(task))) return; if (time_is_after_jiffies(timeout)) { __rpc_do_sleep_on_priority(q, task, queue_priority); __rpc_add_timer(q, task, timeout); } else task->tk_status = -ETIMEDOUT; } static void rpc_set_tk_callback(struct rpc_task *task, rpc_action action) { if (action && !WARN_ON_ONCE(task->tk_callback != NULL)) task->tk_callback = action; } static bool rpc_sleep_check_activated(struct rpc_task *task) { /* We shouldn't ever put an inactive task to sleep */ if (WARN_ON_ONCE(!RPC_IS_ACTIVATED(task))) { task->tk_status = -EIO; rpc_put_task_async(task); return false; } return true; } void rpc_sleep_on_timeout(struct rpc_wait_queue *q, struct rpc_task *task, rpc_action action, unsigned long timeout) { if (!rpc_sleep_check_activated(task)) return; rpc_set_tk_callback(task, action); /* * Protect the queue operations. */ spin_lock(&q->lock); __rpc_sleep_on_priority_timeout(q, task, timeout, task->tk_priority); spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_timeout); void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task, rpc_action action) { if (!rpc_sleep_check_activated(task)) return; rpc_set_tk_callback(task, action); WARN_ON_ONCE(task->tk_timeout != 0); /* * Protect the queue operations. */ spin_lock(&q->lock); __rpc_sleep_on_priority(q, task, task->tk_priority); spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on); void rpc_sleep_on_priority_timeout(struct rpc_wait_queue *q, struct rpc_task *task, unsigned long timeout, int priority) { if (!rpc_sleep_check_activated(task)) return; priority -= RPC_PRIORITY_LOW; /* * Protect the queue operations. */ spin_lock(&q->lock); __rpc_sleep_on_priority_timeout(q, task, timeout, priority); spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_priority_timeout); void rpc_sleep_on_priority(struct rpc_wait_queue *q, struct rpc_task *task, int priority) { if (!rpc_sleep_check_activated(task)) return; WARN_ON_ONCE(task->tk_timeout != 0); priority -= RPC_PRIORITY_LOW; /* * Protect the queue operations. */ spin_lock(&q->lock); __rpc_sleep_on_priority(q, task, priority); spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_priority); /** * __rpc_do_wake_up_task_on_wq - wake up a single rpc_task * @wq: workqueue on which to run task * @queue: wait queue * @task: task to be woken up * * Caller must hold queue->lock, and have cleared the task queued flag. */ static void __rpc_do_wake_up_task_on_wq(struct workqueue_struct *wq, struct rpc_wait_queue *queue, struct rpc_task *task) { /* Has the task been executed yet? If not, we cannot wake it up! */ if (!RPC_IS_ACTIVATED(task)) { printk(KERN_ERR "RPC: Inactive task (%p) being woken up!\n", task); return; } trace_rpc_task_wakeup(task, queue); __rpc_remove_wait_queue(queue, task); rpc_make_runnable(wq, task); } /* * Wake up a queued task while the queue lock is being held */ static struct rpc_task * rpc_wake_up_task_on_wq_queue_action_locked(struct workqueue_struct *wq, struct rpc_wait_queue *queue, struct rpc_task *task, bool (*action)(struct rpc_task *, void *), void *data) { if (RPC_IS_QUEUED(task)) { smp_rmb(); if (task->tk_waitqueue == queue) { if (action == NULL || action(task, data)) { __rpc_do_wake_up_task_on_wq(wq, queue, task); return task; } } } return NULL; } /* * Wake up a queued task while the queue lock is being held */ static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct rpc_task *task) { rpc_wake_up_task_on_wq_queue_action_locked(rpciod_workqueue, queue, task, NULL, NULL); } /* * Wake up a task on a specific queue */ void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task) { if (!RPC_IS_QUEUED(task)) return; spin_lock(&queue->lock); rpc_wake_up_task_queue_locked(queue, task); spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up_queued_task); static bool rpc_task_action_set_status(struct rpc_task *task, void *status) { task->tk_status = *(int *)status; return true; } static void rpc_wake_up_task_queue_set_status_locked(struct rpc_wait_queue *queue, struct rpc_task *task, int status) { rpc_wake_up_task_on_wq_queue_action_locked(rpciod_workqueue, queue, task, rpc_task_action_set_status, &status); } /** * rpc_wake_up_queued_task_set_status - wake up a task and set task->tk_status * @queue: pointer to rpc_wait_queue * @task: pointer to rpc_task * @status: integer error value * * If @task is queued on @queue, then it is woken up, and @task->tk_status is * set to the value of @status. */ void rpc_wake_up_queued_task_set_status(struct rpc_wait_queue *queue, struct rpc_task *task, int status) { if (!RPC_IS_QUEUED(task)) return; spin_lock(&queue->lock); rpc_wake_up_task_queue_set_status_locked(queue, task, status); spin_unlock(&queue->lock); } /* * Wake up the next task on a priority queue. */ static struct rpc_task *__rpc_find_next_queued_priority(struct rpc_wait_queue *queue) { struct list_head *q; struct rpc_task *task; /* * Service the privileged queue. */ q = &queue->tasks[RPC_NR_PRIORITY - 1]; if (queue->maxpriority > RPC_PRIORITY_PRIVILEGED && !list_empty(q)) { task = list_first_entry(q, struct rpc_task, u.tk_wait.list); goto out; } /* * Service a batch of tasks from a single owner. */ q = &queue->tasks[queue->priority]; if (!list_empty(q) && queue->nr) { queue->nr--; task = list_first_entry(q, struct rpc_task, u.tk_wait.list); goto out; } /* * Service the next queue. */ do { if (q == &queue->tasks[0]) q = &queue->tasks[queue->maxpriority]; else q = q - 1; if (!list_empty(q)) { task = list_first_entry(q, struct rpc_task, u.tk_wait.list); goto new_queue; } } while (q != &queue->tasks[queue->priority]); rpc_reset_waitqueue_priority(queue); return NULL; new_queue: rpc_set_waitqueue_priority(queue, (unsigned int)(q - &queue->tasks[0])); out: return task; } static struct rpc_task *__rpc_find_next_queued(struct rpc_wait_queue *queue) { if (RPC_IS_PRIORITY(queue)) return __rpc_find_next_queued_priority(queue); if (!list_empty(&queue->tasks[0])) return list_first_entry(&queue->tasks[0], struct rpc_task, u.tk_wait.list); return NULL; } /* * Wake up the first task on the wait queue. */ struct rpc_task *rpc_wake_up_first_on_wq(struct workqueue_struct *wq, struct rpc_wait_queue *queue, bool (*func)(struct rpc_task *, void *), void *data) { struct rpc_task *task = NULL; spin_lock(&queue->lock); task = __rpc_find_next_queued(queue); if (task != NULL) task = rpc_wake_up_task_on_wq_queue_action_locked(wq, queue, task, func, data); spin_unlock(&queue->lock); return task; } /* * Wake up the first task on the wait queue. */ struct rpc_task *rpc_wake_up_first(struct rpc_wait_queue *queue, bool (*func)(struct rpc_task *, void *), void *data) { return rpc_wake_up_first_on_wq(rpciod_workqueue, queue, func, data); } EXPORT_SYMBOL_GPL(rpc_wake_up_first); static bool rpc_wake_up_next_func(struct rpc_task *task, void *data) { return true; } /* * Wake up the next task on the wait queue. */ struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *queue) { return rpc_wake_up_first(queue, rpc_wake_up_next_func, NULL); } EXPORT_SYMBOL_GPL(rpc_wake_up_next); /** * rpc_wake_up_locked - wake up all rpc_tasks * @queue: rpc_wait_queue on which the tasks are sleeping * */ static void rpc_wake_up_locked(struct rpc_wait_queue *queue) { struct rpc_task *task; for (;;) { task = __rpc_find_next_queued(queue); if (task == NULL) break; rpc_wake_up_task_queue_locked(queue, task); } } /** * rpc_wake_up - wake up all rpc_tasks * @queue: rpc_wait_queue on which the tasks are sleeping * * Grabs queue->lock */ void rpc_wake_up(struct rpc_wait_queue *queue) { spin_lock(&queue->lock); rpc_wake_up_locked(queue); spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up); /** * rpc_wake_up_status_locked - wake up all rpc_tasks and set their status value. * @queue: rpc_wait_queue on which the tasks are sleeping * @status: status value to set */ static void rpc_wake_up_status_locked(struct rpc_wait_queue *queue, int status) { struct rpc_task *task; for (;;) { task = __rpc_find_next_queued(queue); if (task == NULL) break; rpc_wake_up_task_queue_set_status_locked(queue, task, status); } } /** * rpc_wake_up_status - wake up all rpc_tasks and set their status value. * @queue: rpc_wait_queue on which the tasks are sleeping * @status: status value to set * * Grabs queue->lock */ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status) { spin_lock(&queue->lock); rpc_wake_up_status_locked(queue, status); spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up_status); static void __rpc_queue_timer_fn(struct work_struct *work) { struct rpc_wait_queue *queue = container_of(work, struct rpc_wait_queue, timer_list.dwork.work); struct rpc_task *task, *n; unsigned long expires, now, timeo; spin_lock(&queue->lock); expires = now = jiffies; list_for_each_entry_safe(task, n, &queue->timer_list.list, u.tk_wait.timer_list) { timeo = task->tk_timeout; if (time_after_eq(now, timeo)) { trace_rpc_task_timeout(task, task->tk_action); task->tk_status = -ETIMEDOUT; rpc_wake_up_task_queue_locked(queue, task); continue; } if (expires == now || time_after(expires, timeo)) expires = timeo; } if (!list_empty(&queue->timer_list.list)) rpc_set_queue_timer(queue, expires); spin_unlock(&queue->lock); } static void __rpc_atrun(struct rpc_task *task) { if (task->tk_status == -ETIMEDOUT) task->tk_status = 0; } /* * Run a task at a later time */ void rpc_delay(struct rpc_task *task, unsigned long delay) { rpc_sleep_on_timeout(&delay_queue, task, __rpc_atrun, jiffies + delay); } EXPORT_SYMBOL_GPL(rpc_delay); /* * Helper to call task->tk_ops->rpc_call_prepare */ void rpc_prepare_task(struct rpc_task *task) { task->tk_ops->rpc_call_prepare(task, task->tk_calldata); } static void rpc_init_task_statistics(struct rpc_task *task) { /* Initialize retry counters */ task->tk_garb_retry = 2; task->tk_cred_retry = 2; /* starting timestamp */ task->tk_start = ktime_get(); } static void rpc_reset_task_statistics(struct rpc_task *task) { task->tk_timeouts = 0; task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_SENT); rpc_init_task_statistics(task); } /* * Helper that calls task->tk_ops->rpc_call_done if it exists */ void rpc_exit_task(struct rpc_task *task) { trace_rpc_task_end(task, task->tk_action); task->tk_action = NULL; if (task->tk_ops->rpc_count_stats) task->tk_ops->rpc_count_stats(task, task->tk_calldata); else if (task->tk_client) rpc_count_iostats(task, task->tk_client->cl_metrics); if (task->tk_ops->rpc_call_done != NULL) { trace_rpc_task_call_done(task, task->tk_ops->rpc_call_done); task->tk_ops->rpc_call_done(task, task->tk_calldata); if (task->tk_action != NULL) { /* Always release the RPC slot and buffer memory */ xprt_release(task); rpc_reset_task_statistics(task); } } } void rpc_signal_task(struct rpc_task *task) { struct rpc_wait_queue *queue; if (!RPC_IS_ACTIVATED(task)) return; if (!rpc_task_set_rpc_status(task, -ERESTARTSYS)) return; trace_rpc_task_signalled(task, task->tk_action); queue = READ_ONCE(task->tk_waitqueue); if (queue) rpc_wake_up_queued_task(queue, task); } void rpc_task_try_cancel(struct rpc_task *task, int error) { struct rpc_wait_queue *queue; if (!rpc_task_set_rpc_status(task, error)) return; queue = READ_ONCE(task->tk_waitqueue); if (queue) rpc_wake_up_queued_task(queue, task); } void rpc_exit(struct rpc_task *task, int status) { task->tk_status = status; task->tk_action = rpc_exit_task; rpc_wake_up_queued_task(task->tk_waitqueue, task); } EXPORT_SYMBOL_GPL(rpc_exit); void rpc_release_calldata(const struct rpc_call_ops *ops, void *calldata) { if (ops->rpc_release != NULL) ops->rpc_release(calldata); } static bool xprt_needs_memalloc(struct rpc_xprt *xprt, struct rpc_task *tk) { if (!xprt) return false; if (!atomic_read(&xprt->swapper)) return false; return test_bit(XPRT_LOCKED, &xprt->state) && xprt->snd_task == tk; } /* * This is the RPC `scheduler' (or rather, the finite state machine). */ static void __rpc_execute(struct rpc_task *task) { struct rpc_wait_queue *queue; int task_is_async = RPC_IS_ASYNC(task); int status = 0; unsigned long pflags = current->flags; WARN_ON_ONCE(RPC_IS_QUEUED(task)); if (RPC_IS_QUEUED(task)) return; for (;;) { void (*do_action)(struct rpc_task *); /* * Perform the next FSM step or a pending callback. * * tk_action may be NULL if the task has been killed. */ do_action = task->tk_action; /* Tasks with an RPC error status should exit */ if (do_action && do_action != rpc_exit_task && (status = READ_ONCE(task->tk_rpc_status)) != 0) { task->tk_status = status; do_action = rpc_exit_task; } /* Callbacks override all actions */ if (task->tk_callback) { do_action = task->tk_callback; task->tk_callback = NULL; } if (!do_action) break; if (RPC_IS_SWAPPER(task) || xprt_needs_memalloc(task->tk_xprt, task)) current->flags |= PF_MEMALLOC; trace_rpc_task_run_action(task, do_action); do_action(task); /* * Lockless check for whether task is sleeping or not. */ if (!RPC_IS_QUEUED(task)) { cond_resched(); continue; } /* * The queue->lock protects against races with * rpc_make_runnable(). * * Note that once we clear RPC_TASK_RUNNING on an asynchronous * rpc_task, rpc_make_runnable() can assign it to a * different workqueue. We therefore cannot assume that the * rpc_task pointer may still be dereferenced. */ queue = task->tk_waitqueue; spin_lock(&queue->lock); if (!RPC_IS_QUEUED(task)) { spin_unlock(&queue->lock); continue; } /* Wake up any task that has an exit status */ if (READ_ONCE(task->tk_rpc_status) != 0) { rpc_wake_up_task_queue_locked(queue, task); spin_unlock(&queue->lock); continue; } rpc_clear_running(task); spin_unlock(&queue->lock); if (task_is_async) goto out; /* sync task: sleep here */ trace_rpc_task_sync_sleep(task, task->tk_action); status = out_of_line_wait_on_bit(&task->tk_runstate, RPC_TASK_QUEUED, rpc_wait_bit_killable, TASK_KILLABLE|TASK_FREEZABLE); if (status < 0) { /* * When a sync task receives a signal, it exits with * -ERESTARTSYS. In order to catch any callbacks that * clean up after sleeping on some queue, we don't * break the loop here, but go around once more. */ rpc_signal_task(task); } trace_rpc_task_sync_wake(task, task->tk_action); } /* Release all resources associated with the task */ rpc_release_task(task); out: current_restore_flags(pflags, PF_MEMALLOC); } /* * User-visible entry point to the scheduler. * * This may be called recursively if e.g. an async NFS task updates * the attributes and finds that dirty pages must be flushed. * NOTE: Upon exit of this function the task is guaranteed to be * released. In particular note that tk_release() will have * been called, so your task memory may have been freed. */ void rpc_execute(struct rpc_task *task) { bool is_async = RPC_IS_ASYNC(task); rpc_set_active(task); rpc_make_runnable(rpciod_workqueue, task); if (!is_async) { unsigned int pflags = memalloc_nofs_save(); __rpc_execute(task); memalloc_nofs_restore(pflags); } } static void rpc_async_schedule(struct work_struct *work) { unsigned int pflags = memalloc_nofs_save(); __rpc_execute(container_of(work, struct rpc_task, u.tk_work)); memalloc_nofs_restore(pflags); } /** * rpc_malloc - allocate RPC buffer resources * @task: RPC task * * A single memory region is allocated, which is split between the * RPC call and RPC reply that this task is being used for. When * this RPC is retired, the memory is released by calling rpc_free. * * To prevent rpciod from hanging, this allocator never sleeps, * returning -ENOMEM and suppressing warning if the request cannot * be serviced immediately. The caller can arrange to sleep in a * way that is safe for rpciod. * * Most requests are 'small' (under 2KiB) and can be serviced from a * mempool, ensuring that NFS reads and writes can always proceed, * and that there is good locality of reference for these buffers. */ int rpc_malloc(struct rpc_task *task) { struct rpc_rqst *rqst = task->tk_rqstp; size_t size = rqst->rq_callsize + rqst->rq_rcvsize; struct rpc_buffer *buf; gfp_t gfp = rpc_task_gfp_mask(); size += sizeof(struct rpc_buffer); if (size <= RPC_BUFFER_MAXSIZE) { buf = kmem_cache_alloc(rpc_buffer_slabp, gfp); /* Reach for the mempool if dynamic allocation fails */ if (!buf && RPC_IS_ASYNC(task)) buf = mempool_alloc(rpc_buffer_mempool, GFP_NOWAIT); } else buf = kmalloc(size, gfp); if (!buf) return -ENOMEM; buf->len = size; rqst->rq_buffer = buf->data; rqst->rq_rbuffer = (char *)rqst->rq_buffer + rqst->rq_callsize; return 0; } /** * rpc_free - free RPC buffer resources allocated via rpc_malloc * @task: RPC task * */ void rpc_free(struct rpc_task *task) { void *buffer = task->tk_rqstp->rq_buffer; size_t size; struct rpc_buffer *buf; buf = container_of(buffer, struct rpc_buffer, data); size = buf->len; if (size <= RPC_BUFFER_MAXSIZE) mempool_free(buf, rpc_buffer_mempool); else kfree(buf); } /* * Creation and deletion of RPC task structures */ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *task_setup_data) { memset(task, 0, sizeof(*task)); atomic_set(&task->tk_count, 1); task->tk_flags = task_setup_data->flags; task->tk_ops = task_setup_data->callback_ops; task->tk_calldata = task_setup_data->callback_data; INIT_LIST_HEAD(&task->tk_task); task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW; task->tk_owner = current->tgid; /* Initialize workqueue for async tasks */ task->tk_workqueue = task_setup_data->workqueue; task->tk_xprt = rpc_task_get_xprt(task_setup_data->rpc_client, xprt_get(task_setup_data->rpc_xprt)); task->tk_op_cred = get_rpccred(task_setup_data->rpc_op_cred); if (task->tk_ops->rpc_call_prepare != NULL) task->tk_action = rpc_prepare_task; rpc_init_task_statistics(task); } static struct rpc_task *rpc_alloc_task(void) { struct rpc_task *task; task = kmem_cache_alloc(rpc_task_slabp, rpc_task_gfp_mask()); if (task) return task; return mempool_alloc(rpc_task_mempool, GFP_NOWAIT); } /* * Create a new task for the specified client. */ struct rpc_task *rpc_new_task(const struct rpc_task_setup *setup_data) { struct rpc_task *task = setup_data->task; unsigned short flags = 0; if (task == NULL) { task = rpc_alloc_task(); if (task == NULL) { rpc_release_calldata(setup_data->callback_ops, setup_data->callback_data); return ERR_PTR(-ENOMEM); } flags = RPC_TASK_DYNAMIC; } rpc_init_task(task, setup_data); task->tk_flags |= flags; return task; } /* * rpc_free_task - release rpc task and perform cleanups * * Note that we free up the rpc_task _after_ rpc_release_calldata() * in order to work around a workqueue dependency issue. * * Tejun Heo states: * "Workqueue currently considers two work items to be the same if they're * on the same address and won't execute them concurrently - ie. it * makes a work item which is queued again while being executed wait * for the previous execution to complete. * * If a work function frees the work item, and then waits for an event * which should be performed by another work item and *that* work item * recycles the freed work item, it can create a false dependency loop. * There really is no reliable way to detect this short of verifying * every memory free." * */ static void rpc_free_task(struct rpc_task *task) { unsigned short tk_flags = task->tk_flags; put_rpccred(task->tk_op_cred); rpc_release_calldata(task->tk_ops, task->tk_calldata); if (tk_flags & RPC_TASK_DYNAMIC) mempool_free(task, rpc_task_mempool); } static void rpc_async_release(struct work_struct *work) { unsigned int pflags = memalloc_nofs_save(); rpc_free_task(container_of(work, struct rpc_task, u.tk_work)); memalloc_nofs_restore(pflags); } static void rpc_release_resources_task(struct rpc_task *task) { xprt_release(task); if (task->tk_msg.rpc_cred) { if (!(task->tk_flags & RPC_TASK_CRED_NOREF)) put_cred(task->tk_msg.rpc_cred); task->tk_msg.rpc_cred = NULL; } rpc_task_release_client(task); } static void rpc_final_put_task(struct rpc_task *task, struct workqueue_struct *q) { if (q != NULL) { INIT_WORK(&task->u.tk_work, rpc_async_release); queue_work(q, &task->u.tk_work); } else rpc_free_task(task); } static void rpc_do_put_task(struct rpc_task *task, struct workqueue_struct *q) { if (atomic_dec_and_test(&task->tk_count)) { rpc_release_resources_task(task); rpc_final_put_task(task, q); } } void rpc_put_task(struct rpc_task *task) { rpc_do_put_task(task, NULL); } EXPORT_SYMBOL_GPL(rpc_put_task); void rpc_put_task_async(struct rpc_task *task) { rpc_do_put_task(task, task->tk_workqueue); } EXPORT_SYMBOL_GPL(rpc_put_task_async); static void rpc_release_task(struct rpc_task *task) { WARN_ON_ONCE(RPC_IS_QUEUED(task)); rpc_release_resources_task(task); /* * Note: at this point we have been removed from rpc_clnt->cl_tasks, * so it should be safe to use task->tk_count as a test for whether * or not any other processes still hold references to our rpc_task. */ if (atomic_read(&task->tk_count) != 1 + !RPC_IS_ASYNC(task)) { /* Wake up anyone who may be waiting for task completion */ if (!rpc_complete_task(task)) return; } else { if (!atomic_dec_and_test(&task->tk_count)) return; } rpc_final_put_task(task, task->tk_workqueue); } int rpciod_up(void) { return try_module_get(THIS_MODULE) ? 0 : -EINVAL; } void rpciod_down(void) { module_put(THIS_MODULE); } /* * Start up the rpciod workqueue. */ static int rpciod_start(void) { struct workqueue_struct *wq; /* * Create the rpciod thread and wait for it to start. */ wq = alloc_workqueue("rpciod", WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!wq) goto out_failed; rpciod_workqueue = wq; wq = alloc_workqueue("xprtiod", WQ_UNBOUND | WQ_MEM_RECLAIM, 0); if (!wq) goto free_rpciod; xprtiod_workqueue = wq; return 1; free_rpciod: wq = rpciod_workqueue; rpciod_workqueue = NULL; destroy_workqueue(wq); out_failed: return 0; } static void rpciod_stop(void) { struct workqueue_struct *wq = NULL; if (rpciod_workqueue == NULL) return; wq = rpciod_workqueue; rpciod_workqueue = NULL; destroy_workqueue(wq); wq = xprtiod_workqueue; xprtiod_workqueue = NULL; destroy_workqueue(wq); } void rpc_destroy_mempool(void) { rpciod_stop(); mempool_destroy(rpc_buffer_mempool); mempool_destroy(rpc_task_mempool); kmem_cache_destroy(rpc_task_slabp); kmem_cache_destroy(rpc_buffer_slabp); rpc_destroy_wait_queue(&delay_queue); } int rpc_init_mempool(void) { /* * The following is not strictly a mempool initialisation, * but there is no harm in doing it here */ rpc_init_wait_queue(&delay_queue, "delayq"); if (!rpciod_start()) goto err_nomem; rpc_task_slabp = kmem_cache_create("rpc_tasks", sizeof(struct rpc_task), 0, SLAB_HWCACHE_ALIGN, NULL); if (!rpc_task_slabp) goto err_nomem; rpc_buffer_slabp = kmem_cache_create("rpc_buffers", RPC_BUFFER_MAXSIZE, 0, SLAB_HWCACHE_ALIGN, NULL); if (!rpc_buffer_slabp) goto err_nomem; rpc_task_mempool = mempool_create_slab_pool(RPC_TASK_POOLSIZE, rpc_task_slabp); if (!rpc_task_mempool) goto err_nomem; rpc_buffer_mempool = mempool_create_slab_pool(RPC_BUFFER_POOLSIZE, rpc_buffer_slabp); if (!rpc_buffer_mempool) goto err_nomem; return 0; err_nomem: rpc_destroy_mempool(); return -ENOMEM; } |
| 5 5 6 6 4 1 1 1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | // SPDX-License-Identifier: GPL-2.0 /* * linux/fs/hfsplus/options.c * * Copyright (C) 2001 * Brad Boyer (flar@allandria.com) * (C) 2003 Ardis Technologies <roman@ardistech.com> * * Option parsing */ #include <linux/string.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/fs_struct.h> #include <linux/fs_context.h> #include <linux/fs_parser.h> #include <linux/nls.h> #include <linux/mount.h> #include <linux/seq_file.h> #include <linux/slab.h> #include "hfsplus_fs.h" enum { opt_creator, opt_type, opt_umask, opt_uid, opt_gid, opt_part, opt_session, opt_nls, opt_decompose, opt_barrier, opt_force, }; static const struct fs_parameter_spec hfs_param_spec[] = { fsparam_string ("creator", opt_creator), fsparam_string ("type", opt_type), fsparam_u32oct ("umask", opt_umask), fsparam_u32 ("uid", opt_uid), fsparam_u32 ("gid", opt_gid), fsparam_u32 ("part", opt_part), fsparam_u32 ("session", opt_session), fsparam_string ("nls", opt_nls), fsparam_flag_no ("decompose", opt_decompose), fsparam_flag_no ("barrier", opt_barrier), fsparam_flag ("force", opt_force), {} }; /* Initialize an options object to reasonable defaults */ void hfsplus_fill_defaults(struct hfsplus_sb_info *opts) { if (!opts) return; opts->creator = HFSPLUS_DEF_CR_TYPE; opts->type = HFSPLUS_DEF_CR_TYPE; opts->umask = current_umask(); opts->uid = current_uid(); opts->gid = current_gid(); opts->part = -1; opts->session = -1; } /* Parse options from mount. Returns nonzero errno on failure */ int hfsplus_parse_param(struct fs_context *fc, struct fs_parameter *param) { struct hfsplus_sb_info *sbi = fc->s_fs_info; struct fs_parse_result result; int opt; /* * Only the force option is examined during remount, all others * are ignored. */ if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE && strncmp(param->key, "force", 5)) return 0; opt = fs_parse(fc, hfs_param_spec, param, &result); if (opt < 0) return opt; switch (opt) { case opt_creator: if (strlen(param->string) != 4) { pr_err("creator requires a 4 character value\n"); return -EINVAL; } memcpy(&sbi->creator, param->string, 4); break; case opt_type: if (strlen(param->string) != 4) { pr_err("type requires a 4 character value\n"); return -EINVAL; } memcpy(&sbi->type, param->string, 4); break; case opt_umask: sbi->umask = (umode_t)result.uint_32; break; case opt_uid: sbi->uid = result.uid; set_bit(HFSPLUS_SB_UID, &sbi->flags); break; case opt_gid: sbi->gid = result.gid; set_bit(HFSPLUS_SB_GID, &sbi->flags); break; case opt_part: sbi->part = result.uint_32; break; case opt_session: sbi->session = result.uint_32; break; case opt_nls: if (sbi->nls) { pr_err("unable to change nls mapping\n"); return -EINVAL; } sbi->nls = load_nls(param->string); if (!sbi->nls) { pr_err("unable to load nls mapping \"%s\"\n", param->string); return -EINVAL; } break; case opt_decompose: if (result.negated) set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags); else clear_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags); break; case opt_barrier: if (result.negated) set_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags); else clear_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags); break; case opt_force: set_bit(HFSPLUS_SB_FORCE, &sbi->flags); break; default: return -EINVAL; } return 0; } int hfsplus_show_options(struct seq_file *seq, struct dentry *root) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(root->d_sb); if (sbi->creator != HFSPLUS_DEF_CR_TYPE) seq_show_option_n(seq, "creator", (char *)&sbi->creator, 4); if (sbi->type != HFSPLUS_DEF_CR_TYPE) seq_show_option_n(seq, "type", (char *)&sbi->type, 4); seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask, from_kuid_munged(&init_user_ns, sbi->uid), from_kgid_munged(&init_user_ns, sbi->gid)); if (sbi->part >= 0) seq_printf(seq, ",part=%u", sbi->part); if (sbi->session >= 0) seq_printf(seq, ",session=%u", sbi->session); if (sbi->nls) seq_printf(seq, ",nls=%s", sbi->nls->charset); if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags)) seq_puts(seq, ",nodecompose"); if (test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) seq_puts(seq, ",nobarrier"); return 0; } |
| 30 6 1 7 5 6 4 6 6 6 7 7 7 1 1 1 1 1 1 4 4 3 3 2 4 12 12 2 8 8 1 4 5 4 7 7 7 4 3 3 7 1 1 1 3 2 1 3 6 6 1 5 6 8 5 5 8 8 5 5 5 8 8 38 38 38 37 36 1 1 35 1 1 35 1 1 35 35 36 33 3 36 1164 1167 1165 132 1127 1162 1133 3 1 1 2 2 1 1 195 33 33 8 8 15 15 7 194 195 193 193 194 195 193 194 194 195 195 195 194 194 193 192 194 191 185 186 188 189 13 64 43 5 28 7 7 7 7 7 7 8 1 7 2 1 2 3 3 3 3 3 3 1 3 3 1 6 6 33 15 18 12 58 16 43 43 43 1 11 43 9 9 1 1 2 70 975 973 23 96 923 109 97 1 3 1 1 1 7 12 928 930 935 4 913 109 109 109 109 5 5 108 1 10 3 96 96 95 96 17 17 1013 984 1 29 991 24 23 986 1008 82 940 924 31 9 72 2 81 79 2 18 1 2 968 993 996 |