/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <linux/if_arp.h>

#include <linux/if_link.h>

#include "sd-netlink.h"

#include "conf-parser.h"

#include "ipoib.h"

#include "networkd-link.h"

#include "networkd-network.h"

#include "parse-util.h"

#include "string-table.h"

#include "string-util.h"

assert_cc((int) IP_OVER_INFINIBAND_MODE_DATAGRAM  == (int) IPOIB_MODE_DATAGRAM);

assert_cc((int) IP_OVER_INFINIBAND_MODE_CONNECTED == (int) IPOIB_MODE_CONNECTED);

static void netdev_ipoib_init(NetDev *netdev) {

        IPoIB *ipoib = IPOIB(netdev);

        ipoib->mode = _IP_OVER_INFINIBAND_MODE_INVALID;

        ipoib->umcast = -1;

}

static int netdev_ipoib_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {

        assert(link);

        assert(m);

        IPoIB *ipoib = IPOIB(netdev);

        int r;

        if (ipoib->pkey > 0) {

                r = sd_netlink_message_append_u16(m, IFLA_IPOIB_PKEY, ipoib->pkey);

                if (r < 0)

                        return r;

        }

        if (ipoib->mode >= 0) {

                r = sd_netlink_message_append_u16(m, IFLA_IPOIB_MODE, ipoib->mode);

                if (r < 0)

                        return r;

        }

        if (ipoib->umcast >= 0) {

                r = sd_netlink_message_append_u16(m, IFLA_IPOIB_UMCAST, ipoib->umcast);

                if (r < 0)

                        return r;

        }

        return 0;

}

int ipoib_set_netlink_message(Link *link, sd_netlink_message *m) {

        int r;

        assert(link);

        assert(link->network);

        assert(m);

        r = sd_netlink_message_open_container(m, IFLA_LINKINFO);

        if (r < 0)

                return r;

        r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, link->kind);

        if (r < 0)

                return r;

        if (link->network->ipoib_mode >= 0) {

                r = sd_netlink_message_append_u16(m, IFLA_IPOIB_MODE, link->network->ipoib_mode);

                if (r < 0)

                        return r;

        }

        if (link->network->ipoib_umcast >= 0) {

                r = sd_netlink_message_append_u16(m, IFLA_IPOIB_UMCAST, link->network->ipoib_umcast);

                if (r < 0)

                        return r;

        }

        r = sd_netlink_message_close_container(m);

        if (r < 0)

                return r;

        r = sd_netlink_message_close_container(m);

        if (r < 0)

                return r;

        return 0;

}

static const char * const ipoib_mode_table[_IP_OVER_INFINIBAND_MODE_MAX] = {

        [IP_OVER_INFINIBAND_MODE_DATAGRAM]  = "datagram",

        [IP_OVER_INFINIBAND_MODE_CONNECTED] = "connected",

};

DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(ipoib_mode, IPoIBMode);

DEFINE_CONFIG_PARSE_ENUM(config_parse_ipoib_mode, ipoib_mode, IPoIBMode);

int config_parse_ipoib_pkey(

                const char *unit,

                const char *filename,

                unsigned line,

                const char *section,

                unsigned section_line,

                const char *lvalue,

                int ltype,

                const char *rvalue,

                void *data,

                void *userdata) {

        uint16_t u, *pkey = ASSERT_PTR(data);

        int r;

        assert(filename);

        assert(lvalue);

        assert(rvalue);

        if (isempty(rvalue)) {

                *pkey = 0; /* 0 means unset. */

                return 0;

        }

        r = safe_atou16(rvalue, &u);

        if (r < 0) {

                log_syntax(unit, LOG_WARNING, filename, line, r,

                           "Failed to parse IPoIB pkey '%s', ignoring assignment: %m",

                           rvalue);

                return 0;

        }

        if (IN_SET(u, 0, 0x8000)) {

                log_syntax(unit, LOG_WARNING, filename, line, 0,

                           "IPoIB pkey cannot be 0 nor 0x8000, ignoring assignment: %s",

                           rvalue);

                return 0;

        }

        *pkey = u;

        return 0;

}

const NetDevVTable ipoib_vtable = {

        .object_size = sizeof(IPoIB),

        .sections = NETDEV_COMMON_SECTIONS "IPoIB\0",

        .init = netdev_ipoib_init,

        .fill_message_create = netdev_ipoib_fill_message_create,

        .create_type = NETDEV_CREATE_STACKED,

        .iftype = ARPHRD_INFINIBAND,

        .generate_mac = true,

};