/src/open5gs/lib/gtp/xact.c
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1 | | /* |
2 | | * Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com> |
3 | | * Copyright (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
4 | | * |
5 | | * This file is part of Open5GS. |
6 | | * |
7 | | * This program is free software: you can redistribute it and/or modify |
8 | | * it under the terms of the GNU Affero General Public License as published by |
9 | | * the Free Software Foundation, either version 3 of the License, or |
10 | | * (at your option) any later version. |
11 | | * |
12 | | * This program is distributed in the hope that it will be useful, |
13 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | | * GNU General Public License for more details. |
16 | | * |
17 | | * You should have received a copy of the GNU General Public License |
18 | | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
19 | | */ |
20 | | |
21 | | #include "ogs-gtp.h" |
22 | | #include "ogs-app.h" |
23 | | |
24 | | typedef enum { |
25 | | GTP_XACT_UNKNOWN_STAGE, |
26 | | GTP_XACT_INITIAL_STAGE, |
27 | | GTP_XACT_INTERMEDIATE_STAGE, |
28 | | GTP_XACT_FINAL_STAGE, |
29 | | } ogs_gtp_xact_stage_t; |
30 | | |
31 | | static int ogs_gtp_xact_initialized = 0; |
32 | | static uint32_t g_xact_id = 0; |
33 | | |
34 | | static OGS_POOL(pool, ogs_gtp_xact_t); |
35 | | |
36 | | static ogs_gtp_xact_t *ogs_gtp_xact_remote_create(ogs_gtp_node_t *gnode, uint8_t gtp_version, uint32_t sqn); |
37 | | static ogs_gtp_xact_stage_t ogs_gtp2_xact_get_stage(uint8_t type, uint32_t xid); |
38 | | static ogs_gtp_xact_stage_t ogs_gtp1_xact_get_stage(uint8_t type, uint32_t xid); |
39 | | static int ogs_gtp_xact_delete(ogs_gtp_xact_t *xact); |
40 | | static int ogs_gtp_xact_update_rx(ogs_gtp_xact_t *xact, uint8_t type); |
41 | | |
42 | | static void response_timeout(void *data); |
43 | | static void holding_timeout(void *data); |
44 | | |
45 | | int ogs_gtp_xact_init(void) |
46 | 0 | { |
47 | 0 | ogs_assert(ogs_gtp_xact_initialized == 0); |
48 | | |
49 | 0 | ogs_pool_init(&pool, ogs_app()->pool.xact); |
50 | | |
51 | 0 | g_xact_id = 0; |
52 | |
|
53 | 0 | ogs_gtp_xact_initialized = 1; |
54 | |
|
55 | 0 | return OGS_OK; |
56 | 0 | } |
57 | | |
58 | | void ogs_gtp_xact_final(void) |
59 | 0 | { |
60 | 0 | ogs_assert(ogs_gtp_xact_initialized == 1); |
61 | | |
62 | 0 | ogs_pool_final(&pool); |
63 | |
|
64 | 0 | ogs_gtp_xact_initialized = 0; |
65 | 0 | } |
66 | | |
67 | | ogs_gtp_xact_t *ogs_gtp1_xact_local_create(ogs_gtp_node_t *gnode, |
68 | | ogs_gtp1_header_t *hdesc, ogs_pkbuf_t *pkbuf, |
69 | | void (*cb)(ogs_gtp_xact_t *xact, void *data), void *data) |
70 | 0 | { |
71 | 0 | int rv; |
72 | 0 | char buf[OGS_ADDRSTRLEN]; |
73 | 0 | ogs_gtp_xact_t *xact = NULL; |
74 | |
|
75 | 0 | ogs_assert(gnode); |
76 | 0 | ogs_assert(hdesc); |
77 | | |
78 | 0 | ogs_pool_alloc(&pool, &xact); |
79 | 0 | ogs_assert(xact); |
80 | 0 | memset(xact, 0, sizeof *xact); |
81 | 0 | xact->index = ogs_pool_index(&pool, xact); |
82 | |
|
83 | 0 | xact->gtp_version = 1; |
84 | 0 | xact->org = OGS_GTP_LOCAL_ORIGINATOR; |
85 | 0 | xact->xid = OGS_NEXT_ID(g_xact_id, |
86 | 0 | OGS_GTP1_MIN_XACT_ID, OGS_GTP1_MAX_XACT_ID); |
87 | 0 | xact->gnode = gnode; |
88 | 0 | xact->cb = cb; |
89 | 0 | xact->data = data; |
90 | | |
91 | | /* 7.6 "The T3-RESPONSE timer shall be started when a signalling request |
92 | | * message (for which a response has been defined) is sent." */ |
93 | 0 | if (hdesc->type != OGS_GTP1_RAN_INFORMATION_RELAY_TYPE) { |
94 | 0 | xact->tm_response = ogs_timer_add( |
95 | 0 | ogs_app()->timer_mgr, response_timeout, xact); |
96 | 0 | ogs_assert(xact->tm_response); |
97 | 0 | xact->response_rcount = ogs_app()->time.message.gtp.n3_response_rcount; |
98 | 0 | } |
99 | | |
100 | 0 | xact->tm_holding = ogs_timer_add( |
101 | 0 | ogs_app()->timer_mgr, holding_timeout, xact); |
102 | 0 | ogs_assert(xact->tm_holding); |
103 | 0 | xact->holding_rcount = ogs_app()->time.message.gtp.n3_holding_rcount; |
104 | |
|
105 | 0 | ogs_list_add(&xact->gnode->local_list, xact); |
106 | |
|
107 | 0 | rv = ogs_gtp1_xact_update_tx(xact, hdesc, pkbuf); |
108 | 0 | if (rv != OGS_OK) { |
109 | 0 | ogs_error("ogs_gtp_xact_update_tx(rv=%d) failed", (int)rv); |
110 | 0 | ogs_gtp_xact_delete(xact); |
111 | 0 | return NULL; |
112 | 0 | } |
113 | | |
114 | 0 | ogs_debug("[%d] LOCAL Create peer [%s]:%d", |
115 | 0 | xact->xid, |
116 | 0 | OGS_ADDR(&gnode->addr, buf), |
117 | 0 | OGS_PORT(&gnode->addr)); |
118 | |
|
119 | 0 | return xact; |
120 | 0 | } |
121 | | |
122 | | ogs_gtp_xact_t *ogs_gtp_xact_local_create(ogs_gtp_node_t *gnode, |
123 | | ogs_gtp2_header_t *hdesc, ogs_pkbuf_t *pkbuf, |
124 | | void (*cb)(ogs_gtp_xact_t *xact, void *data), void *data) |
125 | 0 | { |
126 | 0 | int rv; |
127 | 0 | char buf[OGS_ADDRSTRLEN]; |
128 | 0 | ogs_gtp_xact_t *xact = NULL; |
129 | |
|
130 | 0 | ogs_assert(gnode); |
131 | 0 | ogs_assert(hdesc); |
132 | | |
133 | 0 | ogs_pool_alloc(&pool, &xact); |
134 | 0 | ogs_assert(xact); |
135 | 0 | memset(xact, 0, sizeof *xact); |
136 | 0 | xact->index = ogs_pool_index(&pool, xact); |
137 | |
|
138 | 0 | xact->gtp_version = 2; |
139 | 0 | xact->org = OGS_GTP_LOCAL_ORIGINATOR; |
140 | 0 | xact->xid = OGS_NEXT_ID(g_xact_id, |
141 | 0 | OGS_GTP_MIN_XACT_ID, OGS_GTP_CMD_XACT_ID); |
142 | 0 | if (hdesc->type == OGS_GTP2_MODIFY_BEARER_COMMAND_TYPE || |
143 | 0 | hdesc->type == OGS_GTP2_DELETE_BEARER_COMMAND_TYPE || |
144 | 0 | hdesc->type == OGS_GTP2_BEARER_RESOURCE_COMMAND_TYPE) { |
145 | 0 | xact->xid |= OGS_GTP_CMD_XACT_ID; |
146 | 0 | } |
147 | 0 | xact->gnode = gnode; |
148 | 0 | xact->cb = cb; |
149 | 0 | xact->data = data; |
150 | |
|
151 | 0 | xact->tm_response = ogs_timer_add( |
152 | 0 | ogs_app()->timer_mgr, response_timeout, xact); |
153 | 0 | ogs_assert(xact->tm_response); |
154 | 0 | xact->response_rcount = ogs_app()->time.message.gtp.n3_response_rcount, |
155 | |
|
156 | 0 | xact->tm_holding = ogs_timer_add( |
157 | 0 | ogs_app()->timer_mgr, holding_timeout, xact); |
158 | 0 | ogs_assert(xact->tm_holding); |
159 | 0 | xact->holding_rcount = ogs_app()->time.message.gtp.n3_holding_rcount, |
160 | |
|
161 | 0 | ogs_list_add(&xact->gnode->local_list, xact); |
162 | |
|
163 | 0 | rv = ogs_gtp_xact_update_tx(xact, hdesc, pkbuf); |
164 | 0 | if (rv != OGS_OK) { |
165 | 0 | ogs_error("ogs_gtp_xact_update_tx(rv=%d) failed", (int)rv); |
166 | 0 | ogs_gtp_xact_delete(xact); |
167 | 0 | return NULL; |
168 | 0 | } |
169 | | |
170 | 0 | ogs_debug("[%d] LOCAL Create peer [%s]:%d", |
171 | 0 | xact->xid, |
172 | 0 | OGS_ADDR(&gnode->addr, buf), |
173 | 0 | OGS_PORT(&gnode->addr)); |
174 | |
|
175 | 0 | return xact; |
176 | 0 | } |
177 | | |
178 | | static ogs_gtp_xact_t *ogs_gtp_xact_remote_create(ogs_gtp_node_t *gnode, uint8_t gtp_version, uint32_t sqn) |
179 | 0 | { |
180 | 0 | char buf[OGS_ADDRSTRLEN]; |
181 | 0 | ogs_gtp_xact_t *xact = NULL; |
182 | |
|
183 | 0 | ogs_assert(gnode); |
184 | | |
185 | 0 | ogs_pool_alloc(&pool, &xact); |
186 | 0 | ogs_assert(xact); |
187 | 0 | memset(xact, 0, sizeof *xact); |
188 | 0 | xact->index = ogs_pool_index(&pool, xact); |
189 | |
|
190 | 0 | xact->gtp_version = gtp_version; |
191 | 0 | xact->org = OGS_GTP_REMOTE_ORIGINATOR; |
192 | 0 | xact->xid = (gtp_version == 1) ? |
193 | 0 | OGS_GTP1_SQN_TO_XID(sqn) : OGS_GTP2_SQN_TO_XID(sqn); |
194 | 0 | xact->gnode = gnode; |
195 | |
|
196 | 0 | xact->tm_response = ogs_timer_add( |
197 | 0 | ogs_app()->timer_mgr, response_timeout, xact); |
198 | 0 | ogs_assert(xact->tm_response); |
199 | 0 | xact->response_rcount = ogs_app()->time.message.gtp.n3_response_rcount, |
200 | |
|
201 | 0 | xact->tm_holding = ogs_timer_add( |
202 | 0 | ogs_app()->timer_mgr, holding_timeout, xact); |
203 | 0 | ogs_assert(xact->tm_holding); |
204 | 0 | xact->holding_rcount = ogs_app()->time.message.gtp.n3_holding_rcount, |
205 | |
|
206 | 0 | ogs_list_add(&xact->gnode->remote_list, xact); |
207 | |
|
208 | 0 | ogs_debug("[%d] REMOTE Create peer [%s]:%d", |
209 | 0 | xact->xid, |
210 | 0 | OGS_ADDR(&gnode->addr, buf), |
211 | 0 | OGS_PORT(&gnode->addr)); |
212 | |
|
213 | 0 | return xact; |
214 | 0 | } |
215 | | |
216 | | ogs_gtp_xact_t *ogs_gtp_xact_cycle(ogs_gtp_xact_t *xact) |
217 | 0 | { |
218 | 0 | return ogs_pool_cycle(&pool, xact); |
219 | 0 | } |
220 | | |
221 | | void ogs_gtp_xact_delete_all(ogs_gtp_node_t *gnode) |
222 | 0 | { |
223 | 0 | ogs_gtp_xact_t *xact = NULL, *next_xact = NULL; |
224 | |
|
225 | 0 | ogs_list_for_each_safe(&gnode->local_list, next_xact, xact) |
226 | 0 | ogs_gtp_xact_delete(xact); |
227 | 0 | ogs_list_for_each_safe(&gnode->remote_list, next_xact, xact) |
228 | 0 | ogs_gtp_xact_delete(xact); |
229 | 0 | } |
230 | | |
231 | | int ogs_gtp1_xact_update_tx(ogs_gtp_xact_t *xact, |
232 | | ogs_gtp1_header_t *hdesc, ogs_pkbuf_t *pkbuf) |
233 | 0 | { |
234 | 0 | char buf[OGS_ADDRSTRLEN]; |
235 | 0 | ogs_gtp_xact_stage_t stage; |
236 | 0 | ogs_gtp1_header_t *h = NULL; |
237 | 0 | int gtp_hlen = 0; |
238 | |
|
239 | 0 | ogs_assert(xact); |
240 | 0 | ogs_assert(xact->gnode); |
241 | 0 | ogs_assert(hdesc); |
242 | 0 | ogs_assert(pkbuf); |
243 | | |
244 | 0 | ogs_debug("[%d] %s UPD TX-%d peer [%s]:%d", |
245 | 0 | xact->xid, |
246 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
247 | 0 | hdesc->type, |
248 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
249 | 0 | OGS_PORT(&xact->gnode->addr)); |
250 | |
|
251 | 0 | stage = ogs_gtp1_xact_get_stage(hdesc->type, xact->xid); |
252 | 0 | if (xact->org == OGS_GTP_LOCAL_ORIGINATOR) { |
253 | 0 | switch (stage) { |
254 | 0 | case GTP_XACT_INITIAL_STAGE: |
255 | 0 | if (xact->step != 0) { |
256 | 0 | ogs_error("invalid step[%d]", xact->step); |
257 | 0 | ogs_pkbuf_free(pkbuf); |
258 | 0 | return OGS_ERROR; |
259 | 0 | } |
260 | 0 | break; |
261 | | |
262 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
263 | 0 | ogs_expect(0); |
264 | 0 | ogs_pkbuf_free(pkbuf); |
265 | 0 | return OGS_ERROR; |
266 | | |
267 | 0 | case GTP_XACT_FINAL_STAGE: |
268 | 0 | if (xact->step != 2) { |
269 | 0 | ogs_error("invalid step[%d]", xact->step); |
270 | 0 | ogs_pkbuf_free(pkbuf); |
271 | 0 | return OGS_ERROR; |
272 | 0 | } |
273 | 0 | break; |
274 | | |
275 | 0 | default: |
276 | 0 | ogs_assert_if_reached(); |
277 | 0 | break; |
278 | 0 | } |
279 | 0 | } else if (xact->org == OGS_GTP_REMOTE_ORIGINATOR) { |
280 | 0 | switch (stage) { |
281 | 0 | case GTP_XACT_INITIAL_STAGE: |
282 | 0 | ogs_expect(0); |
283 | 0 | ogs_pkbuf_free(pkbuf); |
284 | 0 | return OGS_ERROR; |
285 | | |
286 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
287 | 0 | case GTP_XACT_FINAL_STAGE: |
288 | 0 | if (xact->step != 1) { |
289 | 0 | ogs_error("invalid step[%d]", xact->step); |
290 | 0 | ogs_pkbuf_free(pkbuf); |
291 | 0 | return OGS_ERROR; |
292 | 0 | } |
293 | 0 | break; |
294 | | |
295 | 0 | default: |
296 | 0 | ogs_error("invalid stage[%d]", stage); |
297 | 0 | ogs_pkbuf_free(pkbuf); |
298 | 0 | return OGS_ERROR; |
299 | 0 | } |
300 | 0 | } else { |
301 | 0 | ogs_error("invalid org[%d]", xact->org); |
302 | 0 | ogs_pkbuf_free(pkbuf); |
303 | 0 | return OGS_ERROR; |
304 | 0 | } |
305 | | |
306 | 0 | gtp_hlen = OGS_GTPV1C_HEADER_LEN; |
307 | | |
308 | |
|
309 | 0 | ogs_pkbuf_push(pkbuf, gtp_hlen); |
310 | 0 | h = (ogs_gtp1_header_t *)pkbuf->data; |
311 | 0 | memset(h, 0, gtp_hlen); |
312 | |
|
313 | 0 | h->version = 1; |
314 | 0 | h->type = hdesc->type; |
315 | 0 | h->pt = 1; /* GTP */ |
316 | 0 | h->teid = htobe32(hdesc->teid); |
317 | |
|
318 | 0 | h->s = 1; |
319 | 0 | h->sqn = OGS_GTP1_XID_TO_SQN(xact->xid); |
320 | 0 | h->length = htobe16(pkbuf->len - 8); |
321 | | |
322 | | /* Save Message type and packet of this step */ |
323 | 0 | xact->seq[xact->step].type = h->type; |
324 | 0 | xact->seq[xact->step].pkbuf = pkbuf; |
325 | | |
326 | | /* Step */ |
327 | 0 | xact->step++; |
328 | |
|
329 | 0 | return OGS_OK; |
330 | 0 | } |
331 | | |
332 | | int ogs_gtp_xact_update_tx(ogs_gtp_xact_t *xact, |
333 | | ogs_gtp2_header_t *hdesc, ogs_pkbuf_t *pkbuf) |
334 | 0 | { |
335 | 0 | char buf[OGS_ADDRSTRLEN]; |
336 | 0 | ogs_gtp_xact_stage_t stage; |
337 | 0 | ogs_gtp2_header_t *h = NULL; |
338 | 0 | int gtp_hlen = 0; |
339 | |
|
340 | 0 | ogs_assert(xact); |
341 | 0 | ogs_assert(xact->gnode); |
342 | 0 | ogs_assert(hdesc); |
343 | 0 | ogs_assert(pkbuf); |
344 | | |
345 | 0 | ogs_debug("[%d] %s UPD TX-%d peer [%s]:%d", |
346 | 0 | xact->xid, |
347 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
348 | 0 | hdesc->type, |
349 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
350 | 0 | OGS_PORT(&xact->gnode->addr)); |
351 | |
|
352 | 0 | stage = ogs_gtp2_xact_get_stage(hdesc->type, xact->xid); |
353 | 0 | if (xact->org == OGS_GTP_LOCAL_ORIGINATOR) { |
354 | 0 | switch (stage) { |
355 | 0 | case GTP_XACT_INITIAL_STAGE: |
356 | 0 | if (xact->step != 0) { |
357 | 0 | ogs_error("invalid step[%d]", xact->step); |
358 | 0 | ogs_pkbuf_free(pkbuf); |
359 | 0 | return OGS_ERROR; |
360 | 0 | } |
361 | 0 | break; |
362 | | |
363 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
364 | 0 | ogs_expect(0); |
365 | 0 | ogs_pkbuf_free(pkbuf); |
366 | 0 | return OGS_ERROR; |
367 | | |
368 | 0 | case GTP_XACT_FINAL_STAGE: |
369 | 0 | if (xact->step != 2) { |
370 | 0 | ogs_error("invalid step[%d]", xact->step); |
371 | 0 | ogs_pkbuf_free(pkbuf); |
372 | 0 | return OGS_ERROR; |
373 | 0 | } |
374 | 0 | break; |
375 | | |
376 | 0 | default: |
377 | 0 | ogs_assert_if_reached(); |
378 | 0 | break; |
379 | 0 | } |
380 | 0 | } else if (xact->org == OGS_GTP_REMOTE_ORIGINATOR) { |
381 | 0 | switch (stage) { |
382 | 0 | case GTP_XACT_INITIAL_STAGE: |
383 | 0 | ogs_expect(0); |
384 | 0 | ogs_pkbuf_free(pkbuf); |
385 | 0 | return OGS_ERROR; |
386 | | |
387 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
388 | 0 | case GTP_XACT_FINAL_STAGE: |
389 | 0 | if (xact->step != 1) { |
390 | 0 | ogs_error("invalid step[%d]", xact->step); |
391 | 0 | ogs_pkbuf_free(pkbuf); |
392 | 0 | return OGS_ERROR; |
393 | 0 | } |
394 | 0 | break; |
395 | | |
396 | 0 | default: |
397 | 0 | ogs_error("invalid stage[%d]", stage); |
398 | 0 | ogs_pkbuf_free(pkbuf); |
399 | 0 | return OGS_ERROR; |
400 | 0 | } |
401 | 0 | } else { |
402 | 0 | ogs_error("invalid org[%d]", xact->org); |
403 | 0 | ogs_pkbuf_free(pkbuf); |
404 | 0 | return OGS_ERROR; |
405 | 0 | } |
406 | | |
407 | 0 | if (hdesc->type > OGS_GTP2_VERSION_NOT_SUPPORTED_INDICATION_TYPE) { |
408 | 0 | gtp_hlen = OGS_GTPV2C_HEADER_LEN; |
409 | 0 | } else { |
410 | 0 | gtp_hlen = OGS_GTPV2C_HEADER_LEN - OGS_GTP2_TEID_LEN; |
411 | 0 | } |
412 | |
|
413 | 0 | ogs_pkbuf_push(pkbuf, gtp_hlen); |
414 | 0 | h = (ogs_gtp2_header_t *)pkbuf->data; |
415 | 0 | memset(h, 0, gtp_hlen); |
416 | |
|
417 | 0 | h->version = 2; |
418 | 0 | h->type = hdesc->type; |
419 | |
|
420 | 0 | if (hdesc->type > OGS_GTP2_VERSION_NOT_SUPPORTED_INDICATION_TYPE) { |
421 | 0 | h->teid_presence = 1; |
422 | 0 | h->teid = htobe32(hdesc->teid); |
423 | 0 | h->sqn = OGS_GTP2_XID_TO_SQN(xact->xid); |
424 | 0 | } else { |
425 | 0 | h->teid_presence = 0; |
426 | 0 | h->sqn_only = OGS_GTP2_XID_TO_SQN(xact->xid); |
427 | 0 | } |
428 | 0 | h->length = htobe16(pkbuf->len - 4); |
429 | | |
430 | | /* Save Message type and packet of this step */ |
431 | 0 | xact->seq[xact->step].type = h->type; |
432 | 0 | xact->seq[xact->step].pkbuf = pkbuf; |
433 | | |
434 | | /* Step */ |
435 | 0 | xact->step++; |
436 | |
|
437 | 0 | return OGS_OK; |
438 | 0 | } |
439 | | |
440 | | static int ogs_gtp_xact_update_rx(ogs_gtp_xact_t *xact, uint8_t type) |
441 | 0 | { |
442 | 0 | char buf[OGS_ADDRSTRLEN]; |
443 | 0 | ogs_gtp_xact_stage_t stage; |
444 | |
|
445 | 0 | ogs_debug("[%d] %s UPD RX-%d peer [%s]:%d", |
446 | 0 | xact->xid, |
447 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
448 | 0 | type, |
449 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
450 | 0 | OGS_PORT(&xact->gnode->addr)); |
451 | |
|
452 | 0 | if (xact->gtp_version == 1) |
453 | 0 | stage = ogs_gtp1_xact_get_stage(type, xact->xid); |
454 | 0 | else |
455 | 0 | stage = ogs_gtp2_xact_get_stage(type, xact->xid); |
456 | |
|
457 | 0 | if (xact->org == OGS_GTP_LOCAL_ORIGINATOR) { |
458 | 0 | switch (stage) { |
459 | 0 | case GTP_XACT_INITIAL_STAGE: |
460 | 0 | ogs_expect(0); |
461 | 0 | return OGS_ERROR; |
462 | | |
463 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
464 | 0 | if (xact->seq[1].type == type) { |
465 | 0 | ogs_pkbuf_t *pkbuf = NULL; |
466 | |
|
467 | 0 | if (xact->step != 2 && xact->step != 3) { |
468 | 0 | ogs_error("invalid step[%d]", xact->step); |
469 | 0 | ogs_pkbuf_free(pkbuf); |
470 | 0 | return OGS_ERROR; |
471 | 0 | } |
472 | | |
473 | 0 | pkbuf = xact->seq[2].pkbuf; |
474 | 0 | if (pkbuf) { |
475 | 0 | if (xact->tm_holding) |
476 | 0 | ogs_timer_start(xact->tm_holding, |
477 | 0 | ogs_app()->time.message. |
478 | 0 | gtp.t3_holding_duration); |
479 | |
|
480 | 0 | ogs_warn("[%d] %s Request Duplicated. Retransmit!" |
481 | 0 | " for step %d type %d peer [%s]:%d", |
482 | 0 | xact->xid, |
483 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? |
484 | 0 | "LOCAL " : "REMOTE", |
485 | 0 | xact->step, type, |
486 | 0 | OGS_ADDR(&xact->gnode->addr, |
487 | 0 | buf), |
488 | 0 | OGS_PORT(&xact->gnode->addr)); |
489 | 0 | ogs_expect(OGS_OK == ogs_gtp_sendto(xact->gnode, pkbuf)); |
490 | 0 | } else { |
491 | 0 | ogs_warn("[%d] %s Request Duplicated. Discard!" |
492 | 0 | " for step %d type %d peer [%s]:%d", |
493 | 0 | xact->xid, |
494 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? |
495 | 0 | "LOCAL " : "REMOTE", |
496 | 0 | xact->step, type, |
497 | 0 | OGS_ADDR(&xact->gnode->addr, |
498 | 0 | buf), |
499 | 0 | OGS_PORT(&xact->gnode->addr)); |
500 | 0 | } |
501 | |
|
502 | 0 | return OGS_RETRY; |
503 | 0 | } |
504 | | |
505 | 0 | if (xact->step != 1) { |
506 | 0 | ogs_error("invalid step[%d]", xact->step); |
507 | 0 | return OGS_ERROR; |
508 | 0 | } |
509 | | |
510 | 0 | if (xact->tm_holding) |
511 | 0 | ogs_timer_start(xact->tm_holding, |
512 | 0 | ogs_app()->time.message.gtp.t3_holding_duration); |
513 | |
|
514 | 0 | break; |
515 | | |
516 | 0 | case GTP_XACT_FINAL_STAGE: |
517 | 0 | if (xact->step != 1) { |
518 | 0 | ogs_error("invalid step[%d]", xact->step); |
519 | 0 | return OGS_ERROR; |
520 | 0 | } |
521 | 0 | break; |
522 | | |
523 | 0 | default: |
524 | 0 | ogs_error("invalid stage[%d]", stage); |
525 | 0 | return OGS_ERROR; |
526 | 0 | } |
527 | 0 | } else if (xact->org == OGS_GTP_REMOTE_ORIGINATOR) { |
528 | 0 | switch (stage) { |
529 | 0 | case GTP_XACT_INITIAL_STAGE: |
530 | 0 | if (xact->seq[0].type == type) { |
531 | 0 | ogs_pkbuf_t *pkbuf = NULL; |
532 | |
|
533 | 0 | if (xact->step != 1 && xact->step != 2) { |
534 | 0 | ogs_error("invalid step[%d]", xact->step); |
535 | 0 | return OGS_ERROR; |
536 | 0 | } |
537 | | |
538 | 0 | pkbuf = xact->seq[1].pkbuf; |
539 | 0 | if (pkbuf) { |
540 | 0 | if (xact->tm_holding) |
541 | 0 | ogs_timer_start(xact->tm_holding, |
542 | 0 | ogs_app()->time.message. |
543 | 0 | gtp.t3_holding_duration); |
544 | |
|
545 | 0 | ogs_warn("[%d] %s Request Duplicated. Retransmit!" |
546 | 0 | " for step %d type %d peer [%s]:%d", |
547 | 0 | xact->xid, |
548 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? |
549 | 0 | "LOCAL " : "REMOTE", |
550 | 0 | xact->step, type, |
551 | 0 | OGS_ADDR(&xact->gnode->addr, |
552 | 0 | buf), |
553 | 0 | OGS_PORT(&xact->gnode->addr)); |
554 | 0 | ogs_expect(OGS_OK == ogs_gtp_sendto(xact->gnode, pkbuf)); |
555 | 0 | } else { |
556 | 0 | ogs_warn("[%d] %s Request Duplicated. Discard!" |
557 | 0 | " for step %d type %d peer [%s]:%d", |
558 | 0 | xact->xid, |
559 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? |
560 | 0 | "LOCAL " : "REMOTE", |
561 | 0 | xact->step, type, |
562 | 0 | OGS_ADDR(&xact->gnode->addr, |
563 | 0 | buf), |
564 | 0 | OGS_PORT(&xact->gnode->addr)); |
565 | 0 | } |
566 | |
|
567 | 0 | return OGS_RETRY; |
568 | 0 | } |
569 | | |
570 | 0 | if (xact->step != 0) { |
571 | 0 | ogs_error("invalid step[%d]", xact->step); |
572 | 0 | return OGS_ERROR; |
573 | 0 | } |
574 | 0 | if (xact->tm_holding) |
575 | 0 | ogs_timer_start(xact->tm_holding, |
576 | 0 | ogs_app()->time.message.gtp.t3_holding_duration); |
577 | |
|
578 | 0 | break; |
579 | | |
580 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
581 | 0 | ogs_expect(0); |
582 | 0 | return OGS_ERROR; |
583 | | |
584 | 0 | case GTP_XACT_FINAL_STAGE: |
585 | 0 | if (xact->step != 2) { |
586 | 0 | ogs_error("invalid step[%d]", xact->step); |
587 | 0 | return OGS_ERROR; |
588 | 0 | } |
589 | | |
590 | | /* continue */ |
591 | 0 | break; |
592 | | |
593 | 0 | default: |
594 | 0 | ogs_error("invalid stage[%d]", stage); |
595 | 0 | return OGS_ERROR; |
596 | 0 | } |
597 | 0 | } else { |
598 | 0 | ogs_error("invalid org[%d]", xact->org); |
599 | 0 | return OGS_ERROR; |
600 | 0 | } |
601 | | |
602 | 0 | if (xact->tm_response) |
603 | 0 | ogs_timer_stop(xact->tm_response); |
604 | | |
605 | | /* Save Message type of this step */ |
606 | 0 | xact->seq[xact->step].type = type; |
607 | | |
608 | | /* Step */ |
609 | 0 | xact->step++; |
610 | |
|
611 | 0 | return OGS_OK; |
612 | 0 | } |
613 | | |
614 | | |
615 | | int ogs_gtp_xact_commit(ogs_gtp_xact_t *xact) |
616 | 0 | { |
617 | 0 | char buf[OGS_ADDRSTRLEN]; |
618 | |
|
619 | 0 | uint8_t type; |
620 | 0 | ogs_pkbuf_t *pkbuf = NULL; |
621 | 0 | ogs_gtp_xact_stage_t stage; |
622 | |
|
623 | 0 | ogs_assert(xact); |
624 | 0 | ogs_assert(xact->gnode); |
625 | | |
626 | 0 | ogs_debug("[%d] %s Commit peer [%s]:%d", |
627 | 0 | xact->xid, |
628 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
629 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
630 | 0 | OGS_PORT(&xact->gnode->addr)); |
631 | |
|
632 | 0 | type = xact->seq[xact->step-1].type; |
633 | 0 | if (xact->gtp_version == 1) |
634 | 0 | stage = ogs_gtp1_xact_get_stage(type, xact->xid); |
635 | 0 | else |
636 | 0 | stage = ogs_gtp2_xact_get_stage(type, xact->xid); |
637 | |
|
638 | 0 | if (xact->org == OGS_GTP_LOCAL_ORIGINATOR) { |
639 | 0 | switch (stage) { |
640 | 0 | case GTP_XACT_INITIAL_STAGE: |
641 | 0 | if (xact->step != 1) { |
642 | 0 | ogs_error("invalid step[%d]", xact->step); |
643 | 0 | ogs_gtp_xact_delete(xact); |
644 | 0 | return OGS_ERROR; |
645 | 0 | } |
646 | | |
647 | 0 | if (xact->tm_response) |
648 | 0 | ogs_timer_start(xact->tm_response, |
649 | 0 | ogs_app()->time.message.gtp.t3_response_duration); |
650 | |
|
651 | 0 | break; |
652 | | |
653 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
654 | 0 | ogs_expect(0); |
655 | 0 | ogs_gtp_xact_delete(xact); |
656 | 0 | return OGS_ERROR; |
657 | | |
658 | 0 | case GTP_XACT_FINAL_STAGE: |
659 | 0 | if (xact->step != 2 && xact->step != 3) { |
660 | 0 | ogs_error("invalid step[%d]", xact->step); |
661 | 0 | ogs_gtp_xact_delete(xact); |
662 | 0 | return OGS_ERROR; |
663 | 0 | } |
664 | 0 | if (xact->step == 2) { |
665 | 0 | ogs_gtp_xact_delete(xact); |
666 | 0 | return OGS_OK; |
667 | 0 | } |
668 | | |
669 | 0 | break; |
670 | | |
671 | 0 | default: |
672 | 0 | ogs_error("invalid stage[%d]", stage); |
673 | 0 | ogs_gtp_xact_delete(xact); |
674 | 0 | return OGS_ERROR; |
675 | 0 | } |
676 | 0 | } else if (xact->org == OGS_GTP_REMOTE_ORIGINATOR) { |
677 | 0 | switch (stage) { |
678 | 0 | case GTP_XACT_INITIAL_STAGE: |
679 | 0 | ogs_expect(0); |
680 | 0 | ogs_gtp_xact_delete(xact); |
681 | 0 | return OGS_ERROR; |
682 | | |
683 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
684 | 0 | if (xact->step != 2) { |
685 | 0 | ogs_error("invalid step[%d]", xact->step); |
686 | 0 | ogs_gtp_xact_delete(xact); |
687 | 0 | return OGS_ERROR; |
688 | 0 | } |
689 | 0 | if (xact->tm_response) |
690 | 0 | ogs_timer_start(xact->tm_response, |
691 | 0 | ogs_app()->time.message.gtp.t3_response_duration); |
692 | |
|
693 | 0 | break; |
694 | | |
695 | 0 | case GTP_XACT_FINAL_STAGE: |
696 | 0 | if (xact->step != 2 && xact->step != 3) { |
697 | 0 | ogs_error("invalid step[%d]", xact->step); |
698 | 0 | ogs_gtp_xact_delete(xact); |
699 | 0 | return OGS_ERROR; |
700 | 0 | } |
701 | 0 | if (xact->step == 3) { |
702 | 0 | ogs_gtp_xact_delete(xact); |
703 | 0 | return OGS_OK; |
704 | 0 | } |
705 | | |
706 | 0 | break; |
707 | | |
708 | 0 | default: |
709 | 0 | ogs_error("invalid stage[%d]", stage); |
710 | 0 | ogs_gtp_xact_delete(xact); |
711 | 0 | return OGS_ERROR; |
712 | 0 | } |
713 | 0 | } else { |
714 | 0 | ogs_error("invalid org[%d]", xact->org); |
715 | 0 | ogs_gtp_xact_delete(xact); |
716 | 0 | return OGS_ERROR; |
717 | 0 | } |
718 | | |
719 | 0 | pkbuf = xact->seq[xact->step-1].pkbuf; |
720 | 0 | ogs_assert(pkbuf); |
721 | | |
722 | 0 | ogs_expect(OGS_OK == ogs_gtp_sendto(xact->gnode, pkbuf)); |
723 | |
|
724 | 0 | return OGS_OK; |
725 | 0 | } |
726 | | |
727 | | static void response_timeout(void *data) |
728 | 0 | { |
729 | 0 | char buf[OGS_ADDRSTRLEN]; |
730 | 0 | ogs_gtp_xact_t *xact = data; |
731 | |
|
732 | 0 | ogs_assert(xact); |
733 | 0 | ogs_assert(xact->gnode); |
734 | | |
735 | 0 | ogs_debug("[%d] %s Response Timeout " |
736 | 0 | "for step %d type %d peer [%s]:%d", |
737 | 0 | xact->xid, |
738 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
739 | 0 | xact->step, xact->seq[xact->step-1].type, |
740 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
741 | 0 | OGS_PORT(&xact->gnode->addr)); |
742 | |
|
743 | 0 | if (--xact->response_rcount > 0) { |
744 | 0 | ogs_pkbuf_t *pkbuf = NULL; |
745 | |
|
746 | 0 | if (xact->tm_response) |
747 | 0 | ogs_timer_start(xact->tm_response, |
748 | 0 | ogs_app()->time.message.gtp.t3_response_duration); |
749 | |
|
750 | 0 | pkbuf = xact->seq[xact->step-1].pkbuf; |
751 | 0 | ogs_assert(pkbuf); |
752 | | |
753 | 0 | ogs_expect(OGS_OK == ogs_gtp_sendto(xact->gnode, pkbuf)); |
754 | 0 | } else { |
755 | 0 | ogs_warn("[%d] %s No Reponse. Give up! " |
756 | 0 | "for step %d type %d peer [%s]:%d", |
757 | 0 | xact->xid, |
758 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
759 | 0 | xact->step, xact->seq[xact->step-1].type, |
760 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
761 | 0 | OGS_PORT(&xact->gnode->addr)); |
762 | |
|
763 | 0 | if (xact->cb) |
764 | 0 | xact->cb(xact, xact->data); |
765 | |
|
766 | 0 | ogs_gtp_xact_delete(xact); |
767 | 0 | } |
768 | 0 | } |
769 | | |
770 | | static void holding_timeout(void *data) |
771 | 0 | { |
772 | 0 | char buf[OGS_ADDRSTRLEN]; |
773 | 0 | ogs_gtp_xact_t *xact = data; |
774 | |
|
775 | 0 | ogs_assert(xact); |
776 | 0 | ogs_assert(xact->gnode); |
777 | | |
778 | 0 | ogs_debug("[%d] %s Holding Timeout " |
779 | 0 | "for step %d type %d peer [%s]:%d", |
780 | 0 | xact->xid, |
781 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
782 | 0 | xact->step, xact->seq[xact->step-1].type, |
783 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
784 | 0 | OGS_PORT(&xact->gnode->addr)); |
785 | |
|
786 | 0 | if (--xact->holding_rcount > 0) { |
787 | 0 | if (xact->tm_holding) |
788 | 0 | ogs_timer_start(xact->tm_holding, |
789 | 0 | ogs_app()->time.message.gtp.t3_holding_duration); |
790 | 0 | } else { |
791 | 0 | ogs_debug("[%d] %s Delete Transaction " |
792 | 0 | "for step %d type %d peer [%s]:%d", |
793 | 0 | xact->xid, |
794 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
795 | 0 | xact->step, xact->seq[xact->step-1].type, |
796 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
797 | 0 | OGS_PORT(&xact->gnode->addr)); |
798 | 0 | ogs_gtp_xact_delete(xact); |
799 | 0 | } |
800 | 0 | } |
801 | | |
802 | | int ogs_gtp1_xact_receive( |
803 | | ogs_gtp_node_t *gnode, ogs_gtp1_header_t *h, ogs_gtp_xact_t **xact) |
804 | 0 | { |
805 | 0 | int rv; |
806 | 0 | char buf[OGS_ADDRSTRLEN]; |
807 | |
|
808 | 0 | uint8_t type; |
809 | 0 | uint32_t sqn, xid; |
810 | 0 | ogs_gtp_xact_stage_t stage; |
811 | 0 | ogs_list_t *list = NULL; |
812 | 0 | ogs_gtp_xact_t *new = NULL; |
813 | |
|
814 | 0 | ogs_assert(gnode); |
815 | 0 | ogs_assert(h); |
816 | | |
817 | 0 | type = h->type; |
818 | |
|
819 | 0 | if (!h->s) { |
820 | 0 | ogs_error("ogs_gtp_xact_update_rx() failed, pkt has no SQN"); |
821 | 0 | return OGS_ERROR; |
822 | 0 | } |
823 | 0 | sqn = h->sqn; |
824 | |
|
825 | 0 | xid = OGS_GTP1_SQN_TO_XID(sqn); |
826 | 0 | stage = ogs_gtp1_xact_get_stage(type, xid); |
827 | |
|
828 | 0 | switch (stage) { |
829 | 0 | case GTP_XACT_INITIAL_STAGE: |
830 | 0 | list = &gnode->remote_list; |
831 | 0 | break; |
832 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
833 | 0 | list = &gnode->local_list; |
834 | 0 | break; |
835 | 0 | case GTP_XACT_FINAL_STAGE: |
836 | 0 | list = &gnode->local_list; // FIXME: is this correct? |
837 | 0 | break; |
838 | 0 | default: |
839 | 0 | ogs_error("[%d] Unexpected type %u from GTPv1 peer [%s]:%d", |
840 | 0 | xid, type, OGS_ADDR(&gnode->addr, buf), OGS_PORT(&gnode->addr)); |
841 | 0 | return OGS_ERROR; |
842 | 0 | } |
843 | | |
844 | 0 | ogs_assert(list); |
845 | 0 | ogs_list_for_each(list, new) { |
846 | 0 | if (new->gtp_version == 1 && new->xid == xid) { |
847 | 0 | ogs_debug("[%d] %s Find GTPv%u peer [%s]:%d", |
848 | 0 | new->xid, |
849 | 0 | new->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
850 | 0 | new->gtp_version, |
851 | 0 | OGS_ADDR(&gnode->addr, buf), |
852 | 0 | OGS_PORT(&gnode->addr)); |
853 | 0 | break; |
854 | 0 | } |
855 | 0 | } |
856 | |
|
857 | 0 | ogs_debug("[%d] Cannot find xact type %u from GTPv1 peer [%s]:%d", |
858 | 0 | xid, type, OGS_ADDR(&gnode->addr, buf), OGS_PORT(&gnode->addr)); |
859 | |
|
860 | 0 | if (!new) |
861 | 0 | new = ogs_gtp_xact_remote_create(gnode, 1, sqn); |
862 | 0 | ogs_assert(new); |
863 | | |
864 | 0 | ogs_debug("[%d] %s Receive peer [%s]:%d", |
865 | 0 | new->xid, |
866 | 0 | new->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
867 | 0 | OGS_ADDR(&gnode->addr, buf), |
868 | 0 | OGS_PORT(&gnode->addr)); |
869 | |
|
870 | 0 | rv = ogs_gtp_xact_update_rx(new, type); |
871 | 0 | if (rv == OGS_ERROR) { |
872 | 0 | ogs_error("ogs_gtp_xact_update_rx() failed"); |
873 | 0 | ogs_gtp_xact_delete(new); |
874 | 0 | return rv; |
875 | 0 | } else if (rv == OGS_RETRY) { |
876 | 0 | return rv; |
877 | 0 | } |
878 | | |
879 | 0 | *xact = new; |
880 | 0 | return rv; |
881 | 0 | } |
882 | | |
883 | | int ogs_gtp_xact_receive( |
884 | | ogs_gtp_node_t *gnode, ogs_gtp2_header_t *h, ogs_gtp_xact_t **xact) |
885 | 0 | { |
886 | 0 | int rv; |
887 | 0 | char buf[OGS_ADDRSTRLEN]; |
888 | |
|
889 | 0 | uint8_t type; |
890 | 0 | uint32_t sqn, xid; |
891 | 0 | ogs_gtp_xact_stage_t stage; |
892 | 0 | ogs_list_t *list = NULL; |
893 | 0 | ogs_gtp_xact_t *new = NULL; |
894 | |
|
895 | 0 | ogs_assert(gnode); |
896 | 0 | ogs_assert(h); |
897 | | |
898 | 0 | type = h->type; |
899 | |
|
900 | 0 | if (h->teid_presence) sqn = h->sqn; |
901 | 0 | else sqn = h->sqn_only; |
902 | |
|
903 | 0 | xid = OGS_GTP2_SQN_TO_XID(sqn); |
904 | 0 | stage = ogs_gtp2_xact_get_stage(type, xid); |
905 | |
|
906 | 0 | switch (stage) { |
907 | 0 | case GTP_XACT_INITIAL_STAGE: |
908 | 0 | list = &gnode->remote_list; |
909 | 0 | break; |
910 | 0 | case GTP_XACT_INTERMEDIATE_STAGE: |
911 | 0 | list = &gnode->local_list; |
912 | 0 | break; |
913 | 0 | case GTP_XACT_FINAL_STAGE: |
914 | 0 | if (xid & OGS_GTP_CMD_XACT_ID) { |
915 | 0 | if (type == OGS_GTP2_MODIFY_BEARER_FAILURE_INDICATION_TYPE || |
916 | 0 | type == OGS_GTP2_DELETE_BEARER_FAILURE_INDICATION_TYPE || |
917 | 0 | type == OGS_GTP2_BEARER_RESOURCE_FAILURE_INDICATION_TYPE) { |
918 | 0 | list = &gnode->local_list; |
919 | 0 | } else { |
920 | 0 | list = &gnode->remote_list; |
921 | 0 | } |
922 | 0 | } else { |
923 | 0 | list = &gnode->local_list; |
924 | 0 | } |
925 | 0 | break; |
926 | 0 | default: |
927 | 0 | ogs_error("[%d] Unexpected type %u from GTPv2 peer [%s]:%d", |
928 | 0 | xid, type, OGS_ADDR(&gnode->addr, buf), OGS_PORT(&gnode->addr)); |
929 | 0 | return OGS_ERROR; |
930 | 0 | } |
931 | | |
932 | 0 | ogs_assert(list); |
933 | 0 | ogs_list_for_each(list, new) { |
934 | 0 | if (new->gtp_version == 2 && new->xid == xid) { |
935 | 0 | ogs_debug("[%d] %s Find GTPv%u peer [%s]:%d", |
936 | 0 | new->xid, |
937 | 0 | new->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
938 | 0 | new->gtp_version, |
939 | 0 | OGS_ADDR(&gnode->addr, buf), |
940 | 0 | OGS_PORT(&gnode->addr)); |
941 | 0 | break; |
942 | 0 | } |
943 | 0 | } |
944 | |
|
945 | 0 | ogs_debug("[%d] Cannot find xact type %u from GTPv2 peer [%s]:%d", |
946 | 0 | xid, type, |
947 | 0 | OGS_ADDR(&gnode->addr, buf), OGS_PORT(&gnode->addr)); |
948 | |
|
949 | 0 | if (!new) |
950 | 0 | new = ogs_gtp_xact_remote_create(gnode, 2, sqn); |
951 | 0 | ogs_assert(new); |
952 | | |
953 | 0 | ogs_debug("[%d] %s Receive peer [%s]:%d", |
954 | 0 | new->xid, |
955 | 0 | new->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
956 | 0 | OGS_ADDR(&gnode->addr, buf), |
957 | 0 | OGS_PORT(&gnode->addr)); |
958 | |
|
959 | 0 | rv = ogs_gtp_xact_update_rx(new, type); |
960 | 0 | if (rv == OGS_ERROR) { |
961 | 0 | ogs_error("ogs_gtp_xact_update_rx() failed"); |
962 | 0 | ogs_gtp_xact_delete(new); |
963 | 0 | return rv; |
964 | 0 | } else if (rv == OGS_RETRY) { |
965 | 0 | return rv; |
966 | 0 | } |
967 | | |
968 | 0 | *xact = new; |
969 | 0 | return rv; |
970 | 0 | } |
971 | | |
972 | | static ogs_gtp_xact_stage_t ogs_gtp1_xact_get_stage(uint8_t type, uint32_t xid) |
973 | 0 | { |
974 | 0 | ogs_gtp_xact_stage_t stage = GTP_XACT_UNKNOWN_STAGE; |
975 | |
|
976 | 0 | switch (type) { |
977 | 0 | case OGS_GTP1_ECHO_REQUEST_TYPE: |
978 | 0 | case OGS_GTP1_NODE_ALIVE_REQUEST_TYPE: |
979 | 0 | case OGS_GTP1_REDIRECTION_REQUEST_TYPE: |
980 | 0 | case OGS_GTP1_CREATE_PDP_CONTEXT_REQUEST_TYPE: |
981 | 0 | case OGS_GTP1_UPDATE_PDP_CONTEXT_REQUEST_TYPE: |
982 | 0 | case OGS_GTP1_DELETE_PDP_CONTEXT_REQUEST_TYPE: |
983 | 0 | case OGS_GTP1_INITIATE_PDP_CONTEXT_ACTIVATION_REQUEST_TYPE: |
984 | 0 | case OGS_GTP1_PDU_NOTIFICATION_REQUEST_TYPE: |
985 | 0 | case OGS_GTP1_PDU_NOTIFICATION_REJECT_REQUEST_TYPE: |
986 | 0 | case OGS_GTP1_SEND_ROUTEING_INFORMATION_FOR_GPRS_REQUEST_TYPE: |
987 | 0 | case OGS_GTP1_FAILURE_REPORT_REQUEST_TYPE: |
988 | 0 | case OGS_GTP1_NOTE_MS_GPRS_PRESENT_REQUEST_TYPE: |
989 | 0 | case OGS_GTP1_IDENTIFICATION_REQUEST_TYPE: |
990 | 0 | case OGS_GTP1_SGSN_CONTEXT_REQUEST_TYPE: |
991 | 0 | case OGS_GTP1_FORWARD_RELOCATION_REQUEST_TYPE: |
992 | 0 | case OGS_GTP1_RELOCATION_CANCEL_REQUEST_TYPE: |
993 | 0 | case OGS_GTP1_UE_REGISTRATION_QUERY_REQUEST_TYPE: |
994 | 0 | case OGS_GTP1_RAN_INFORMATION_RELAY_TYPE: |
995 | 0 | stage = GTP_XACT_INITIAL_STAGE; |
996 | 0 | break; |
997 | 0 | case OGS_GTP1_ECHO_RESPONSE_TYPE: |
998 | 0 | case OGS_GTP1_NODE_ALIVE_RESPONSE_TYPE: |
999 | 0 | case OGS_GTP1_REDIRECTION_RESPONSE_TYPE: |
1000 | 0 | case OGS_GTP1_CREATE_PDP_CONTEXT_RESPONSE_TYPE: |
1001 | 0 | case OGS_GTP1_UPDATE_PDP_CONTEXT_RESPONSE_TYPE: |
1002 | 0 | case OGS_GTP1_DELETE_PDP_CONTEXT_RESPONSE_TYPE: |
1003 | 0 | case OGS_GTP1_INITIATE_PDP_CONTEXT_ACTIVATION_RESPONSE_TYPE: |
1004 | 0 | case OGS_GTP1_PDU_NOTIFICATION_RESPONSE_TYPE: |
1005 | 0 | case OGS_GTP1_PDU_NOTIFICATION_REJECT_RESPONSE_TYPE: |
1006 | 0 | case OGS_GTP1_SEND_ROUTEING_INFORMATION_FOR_GPRS_RESPONSE_TYPE: |
1007 | 0 | case OGS_GTP1_FAILURE_REPORT_RESPONSE_TYPE: |
1008 | 0 | case OGS_GTP1_NOTE_MS_GPRS_PRESENT_RESPONSE_TYPE: |
1009 | 0 | case OGS_GTP1_IDENTIFICATION_RESPONSE_TYPE: |
1010 | 0 | case OGS_GTP1_SGSN_CONTEXT_RESPONSE_TYPE: |
1011 | 0 | case OGS_GTP1_FORWARD_RELOCATION_RESPONSE_TYPE: |
1012 | 0 | case OGS_GTP1_RELOCATION_CANCEL_RESPONSE_TYPE: |
1013 | 0 | case OGS_GTP1_UE_REGISTRATION_QUERY_RESPONSE_TYPE: |
1014 | 0 | stage = GTP_XACT_FINAL_STAGE; |
1015 | 0 | break; |
1016 | | |
1017 | 0 | default: |
1018 | 0 | ogs_error("Not implemented GTPv1 Message Type(%d)", type); |
1019 | 0 | break; |
1020 | 0 | } |
1021 | | |
1022 | 0 | return stage; |
1023 | 0 | } |
1024 | | |
1025 | | /* TS 29.274 Table 6.1-1 */ |
1026 | | static ogs_gtp_xact_stage_t ogs_gtp2_xact_get_stage(uint8_t type, uint32_t xid) |
1027 | 0 | { |
1028 | 0 | ogs_gtp_xact_stage_t stage = GTP_XACT_UNKNOWN_STAGE; |
1029 | |
|
1030 | 0 | switch (type) { |
1031 | 0 | case OGS_GTP2_ECHO_REQUEST_TYPE: |
1032 | 0 | case OGS_GTP2_CREATE_SESSION_REQUEST_TYPE: |
1033 | 0 | case OGS_GTP2_MODIFY_BEARER_REQUEST_TYPE: |
1034 | 0 | case OGS_GTP2_DELETE_SESSION_REQUEST_TYPE: |
1035 | 0 | case OGS_GTP2_CHANGE_NOTIFICATION_REQUEST_TYPE: |
1036 | 0 | case OGS_GTP2_REMOTE_UE_REPORT_NOTIFICATION_TYPE: |
1037 | 0 | case OGS_GTP2_MODIFY_BEARER_COMMAND_TYPE: |
1038 | 0 | case OGS_GTP2_DELETE_BEARER_COMMAND_TYPE: |
1039 | 0 | case OGS_GTP2_BEARER_RESOURCE_COMMAND_TYPE: |
1040 | 0 | case OGS_GTP2_TRACE_SESSION_ACTIVATION_TYPE: |
1041 | 0 | case OGS_GTP2_TRACE_SESSION_DEACTIVATION_TYPE: |
1042 | 0 | case OGS_GTP2_STOP_PAGING_INDICATION_TYPE: |
1043 | 0 | case OGS_GTP2_DELETE_PDN_CONNECTION_SET_REQUEST_TYPE: |
1044 | 0 | case OGS_GTP2_PGW_DOWNLINK_TRIGGERING_NOTIFICATION_TYPE: |
1045 | 0 | case OGS_GTP2_CREATE_FORWARDING_TUNNEL_REQUEST_TYPE: |
1046 | 0 | case OGS_GTP2_SUSPEND_NOTIFICATION_TYPE: |
1047 | 0 | case OGS_GTP2_RESUME_NOTIFICATION_TYPE: |
1048 | 0 | case OGS_GTP2_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST_TYPE: |
1049 | 0 | case OGS_GTP2_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST_TYPE: |
1050 | 0 | case OGS_GTP2_RELEASE_ACCESS_BEARERS_REQUEST_TYPE: |
1051 | 0 | case OGS_GTP2_DOWNLINK_DATA_NOTIFICATION_TYPE: |
1052 | 0 | case OGS_GTP2_PGW_RESTART_NOTIFICATION_TYPE: |
1053 | 0 | case OGS_GTP2_UPDATE_PDN_CONNECTION_SET_REQUEST_TYPE: |
1054 | 0 | case OGS_GTP2_MODIFY_ACCESS_BEARERS_REQUEST_TYPE: |
1055 | 0 | stage = GTP_XACT_INITIAL_STAGE; |
1056 | 0 | break; |
1057 | 0 | case OGS_GTP2_CREATE_BEARER_REQUEST_TYPE: |
1058 | 0 | case OGS_GTP2_UPDATE_BEARER_REQUEST_TYPE: |
1059 | 0 | case OGS_GTP2_DELETE_BEARER_REQUEST_TYPE: |
1060 | 0 | if (xid & OGS_GTP_CMD_XACT_ID) |
1061 | 0 | stage = GTP_XACT_INTERMEDIATE_STAGE; |
1062 | 0 | else |
1063 | 0 | stage = GTP_XACT_INITIAL_STAGE; |
1064 | 0 | break; |
1065 | 0 | case OGS_GTP2_ECHO_RESPONSE_TYPE: |
1066 | 0 | case OGS_GTP2_VERSION_NOT_SUPPORTED_INDICATION_TYPE: |
1067 | 0 | case OGS_GTP2_CREATE_SESSION_RESPONSE_TYPE: |
1068 | 0 | case OGS_GTP2_MODIFY_BEARER_RESPONSE_TYPE: |
1069 | 0 | case OGS_GTP2_DELETE_SESSION_RESPONSE_TYPE: |
1070 | 0 | case OGS_GTP2_CHANGE_NOTIFICATION_RESPONSE_TYPE: |
1071 | 0 | case OGS_GTP2_REMOTE_UE_REPORT_ACKNOWLEDGE_TYPE: |
1072 | 0 | case OGS_GTP2_MODIFY_BEARER_FAILURE_INDICATION_TYPE: |
1073 | 0 | case OGS_GTP2_DELETE_BEARER_FAILURE_INDICATION_TYPE: |
1074 | 0 | case OGS_GTP2_BEARER_RESOURCE_FAILURE_INDICATION_TYPE: |
1075 | 0 | case OGS_GTP2_DOWNLINK_DATA_NOTIFICATION_FAILURE_INDICATION_TYPE: |
1076 | 0 | case OGS_GTP2_CREATE_BEARER_RESPONSE_TYPE: |
1077 | 0 | case OGS_GTP2_UPDATE_BEARER_RESPONSE_TYPE: |
1078 | 0 | case OGS_GTP2_DELETE_BEARER_RESPONSE_TYPE: |
1079 | 0 | case OGS_GTP2_DELETE_PDN_CONNECTION_SET_RESPONSE_TYPE: |
1080 | 0 | case OGS_GTP2_PGW_DOWNLINK_TRIGGERING_ACKNOWLEDGE_TYPE: |
1081 | 0 | case OGS_GTP2_CREATE_FORWARDING_TUNNEL_RESPONSE_TYPE: |
1082 | 0 | case OGS_GTP2_SUSPEND_ACKNOWLEDGE_TYPE: |
1083 | 0 | case OGS_GTP2_RESUME_ACKNOWLEDGE_TYPE: |
1084 | 0 | case OGS_GTP2_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE: |
1085 | 0 | case OGS_GTP2_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE_TYPE: |
1086 | 0 | case OGS_GTP2_RELEASE_ACCESS_BEARERS_RESPONSE_TYPE: |
1087 | 0 | case OGS_GTP2_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE_TYPE: |
1088 | 0 | case OGS_GTP2_PGW_RESTART_NOTIFICATION_ACKNOWLEDGE_TYPE: |
1089 | 0 | case OGS_GTP2_UPDATE_PDN_CONNECTION_SET_RESPONSE_TYPE: |
1090 | 0 | case OGS_GTP2_MODIFY_ACCESS_BEARERS_RESPONSE_TYPE: |
1091 | 0 | stage = GTP_XACT_FINAL_STAGE; |
1092 | 0 | break; |
1093 | | |
1094 | 0 | default: |
1095 | 0 | ogs_error("Not implemented GTPv2 Message Type(%d)", type); |
1096 | 0 | break; |
1097 | 0 | } |
1098 | | |
1099 | 0 | return stage; |
1100 | 0 | } |
1101 | | |
1102 | | void ogs_gtp_xact_associate(ogs_gtp_xact_t *xact1, ogs_gtp_xact_t *xact2) |
1103 | 0 | { |
1104 | 0 | ogs_assert(xact1); |
1105 | 0 | ogs_assert(xact2); |
1106 | | |
1107 | 0 | ogs_assert(xact1->assoc_xact == NULL); |
1108 | 0 | ogs_assert(xact2->assoc_xact == NULL); |
1109 | | |
1110 | 0 | xact1->assoc_xact = xact2; |
1111 | 0 | xact2->assoc_xact = xact1; |
1112 | 0 | } |
1113 | | |
1114 | | void ogs_gtp_xact_deassociate(ogs_gtp_xact_t *xact1, ogs_gtp_xact_t *xact2) |
1115 | 0 | { |
1116 | 0 | ogs_assert(xact1); |
1117 | 0 | ogs_assert(xact2); |
1118 | | |
1119 | 0 | ogs_assert(xact1->assoc_xact != NULL); |
1120 | 0 | ogs_assert(xact2->assoc_xact != NULL); |
1121 | | |
1122 | 0 | xact1->assoc_xact = NULL; |
1123 | 0 | xact2->assoc_xact = NULL; |
1124 | 0 | } |
1125 | | |
1126 | | static int ogs_gtp_xact_delete(ogs_gtp_xact_t *xact) |
1127 | 0 | { |
1128 | 0 | char buf[OGS_ADDRSTRLEN]; |
1129 | |
|
1130 | 0 | ogs_assert(xact); |
1131 | 0 | ogs_assert(xact->gnode); |
1132 | | |
1133 | 0 | ogs_debug("[%d] %s Delete peer [%s]:%d", |
1134 | 0 | xact->xid, |
1135 | 0 | xact->org == OGS_GTP_LOCAL_ORIGINATOR ? "LOCAL " : "REMOTE", |
1136 | 0 | OGS_ADDR(&xact->gnode->addr, buf), |
1137 | 0 | OGS_PORT(&xact->gnode->addr)); |
1138 | |
|
1139 | 0 | if (xact->seq[0].pkbuf) |
1140 | 0 | ogs_pkbuf_free(xact->seq[0].pkbuf); |
1141 | 0 | if (xact->seq[1].pkbuf) |
1142 | 0 | ogs_pkbuf_free(xact->seq[1].pkbuf); |
1143 | 0 | if (xact->seq[2].pkbuf) |
1144 | 0 | ogs_pkbuf_free(xact->seq[2].pkbuf); |
1145 | |
|
1146 | 0 | if (xact->tm_response) |
1147 | 0 | ogs_timer_delete(xact->tm_response); |
1148 | 0 | if (xact->tm_holding) |
1149 | 0 | ogs_timer_delete(xact->tm_holding); |
1150 | |
|
1151 | 0 | if (xact->assoc_xact) |
1152 | 0 | ogs_gtp_xact_deassociate(xact, xact->assoc_xact); |
1153 | |
|
1154 | 0 | ogs_list_remove(xact->org == OGS_GTP_LOCAL_ORIGINATOR ? |
1155 | 0 | &xact->gnode->local_list : &xact->gnode->remote_list, xact); |
1156 | 0 | ogs_pool_free(&pool, xact); |
1157 | |
|
1158 | 0 | return OGS_OK; |
1159 | 0 | } |