1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Susant Sahani <susant@redhat.com>
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include <netinet/ether.h>
23 #include <arpa/inet.h>
26 #include <linux/if_tunnel.h>
31 #include "network-internal.h"
35 static int netdev_fill_ipip_rtnl_message(Link *link, sd_rtnl_message *m) {
40 assert(link->network);
41 assert(link->network->tunnel);
44 netdev = link->network->tunnel;
46 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
48 log_error_netdev(netdev,
49 "Could not append IFLA_IFNAME, attribute: %s",
55 r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
57 log_error_netdev(netdev,
58 "Could not append IFLA_MTU attribute: %s",
64 r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
66 log_error_netdev(netdev,
67 "Could not append IFLA_LINKINFO attribute: %s",
72 r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
73 netdev_kind_to_string(netdev->kind));
75 log_error_netdev(netdev,
76 "Could not append IFLA_INFO_DATA attribute: %s",
81 r = sd_rtnl_message_append_u32(m, IFLA_IPTUN_LINK, link->ifindex);
83 log_error_netdev(netdev,
84 "Could not append IFLA_IPTUN_LINK attribute: %s",
89 r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_LOCAL, &netdev->tunnel_local);
91 log_error_netdev(netdev,
92 "Could not append IFLA_IPTUN_LOCAL attribute: %s",
97 r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_REMOTE, &netdev->tunnel_remote);
99 log_error_netdev(netdev,
100 "Could not append IFLA_IPTUN_REMOTE attribute: %s",
105 r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_TTL, netdev->tunnel_ttl);
107 log_error_netdev(netdev,
108 "Could not append IFLA_IPTUN_TTL attribute: %s",
113 r = sd_rtnl_message_close_container(m);
115 log_error_netdev(netdev,
116 "Could not append IFLA_INFO_DATA attribute: %s",
121 r = sd_rtnl_message_close_container(m);
123 log_error_netdev(netdev,
124 "Could not append IFLA_LINKINFO attribute: %s",
132 static int netdev_fill_sit_rtnl_message(Link *link, sd_rtnl_message *m) {
137 assert(link->network);
138 assert(link->network->tunnel);
141 netdev = link->network->tunnel;
143 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
145 log_error_netdev(netdev,
146 "Could not append IFLA_IFNAME, attribute: %s",
152 r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
154 log_error_netdev(netdev,
155 "Could not append IFLA_MTU attribute: %s",
161 r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
163 log_error_netdev(netdev,
164 "Could not append IFLA_LINKINFO attribute: %s",
169 r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
170 netdev_kind_to_string(netdev->kind));
172 log_error_netdev(netdev,
173 "Could not append IFLA_INFO_DATA attribute: %s",
178 r = sd_rtnl_message_append_u32(m, IFLA_IPTUN_LINK, link->ifindex);
180 log_error_netdev(netdev,
181 "Could not append IFLA_IPTUN_LINK attribute: %s",
186 r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_LOCAL, &netdev->tunnel_local);
188 log_error_netdev(netdev,
189 "Could not append IFLA_IPTUN_LOCAL attribute: %s",
194 r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_REMOTE, &netdev->tunnel_remote);
196 log_error_netdev(netdev,
197 "Could not append IFLA_IPTUN_REMOTE attribute: %s",
202 r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_TOS, netdev->tunnel_tos);
204 log_error_netdev(netdev,
205 "Could not append IFLA_IPTUN_TOS attribute: %s",
210 r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_PMTUDISC, netdev->tunnel_pmtudisc);
212 log_error_netdev(netdev,
213 "Could not append IFLA_IPTUN_PMTUDISC attribute: %s",
218 r = sd_rtnl_message_close_container(m);
220 log_error_netdev(netdev,
221 "Could not append IFLA_INFO_DATA attribute: %s",
226 r = sd_rtnl_message_close_container(m);
228 log_error_netdev(netdev,
229 "Could not append IFLA_LINKINFO attribute: %s",
237 static int netdev_fill_ipgre_rtnl_message(Link *link, sd_rtnl_message *m) {
242 assert(link->network);
243 assert(link->network->tunnel);
246 netdev = link->network->tunnel;
248 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
250 log_error_netdev(netdev,
251 "Could not append IFLA_IFNAME, attribute: %s",
257 r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
259 log_error_netdev(netdev,
260 "Could not append IFLA_MTU attribute: %s",
266 r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
268 log_error_netdev(netdev,
269 "Could not append IFLA_LINKINFO attribute: %s",
274 r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
275 netdev_kind_to_string(netdev->kind));
277 log_error_netdev(netdev,
278 "Could not append IFLA_INFO_DATA attribute: %s",
283 r = sd_rtnl_message_append_u32(m, IFLA_GRE_LINK, link->ifindex);
285 log_error_netdev(netdev,
286 "Could not append IFLA_GRE_LINK attribute: %s",
291 r = sd_rtnl_message_append_in_addr(m, IFLA_GRE_LOCAL, &netdev->tunnel_local);
293 log_error_netdev(netdev,
294 "Could not append IFLA_GRE_LOCAL attribute: %s",
299 r = sd_rtnl_message_append_in_addr(m, IFLA_GRE_REMOTE, &netdev->tunnel_remote);
301 log_error_netdev(netdev,
302 "Could not append IFLA_GRE_REMOTE attribute: %s",
307 r = sd_rtnl_message_append_u8(m, IFLA_GRE_TTL, netdev->tunnel_ttl);
309 log_error_netdev(netdev,
310 "Could not append IFLA_GRE_TTL attribute: %s",
315 r = sd_rtnl_message_append_u8(m, IFLA_GRE_TOS, netdev->tunnel_tos);
317 log_error_netdev(netdev,
318 "Could not append IFLA_GRE_TOS attribute: %s",
323 r = sd_rtnl_message_close_container(m);
325 log_error_netdev(netdev,
326 "Could not append IFLA_INFO_DATA attribute: %s",
331 r = sd_rtnl_message_close_container(m);
333 log_error_netdev(netdev,
334 "Could not append IFLA_LINKINFO attribute: %s",
342 static int netdev_fill_vti_rtnl_message(Link *link, sd_rtnl_message *m) {
347 assert(link->network);
348 assert(link->network->tunnel);
351 netdev = link->network->tunnel;
353 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
355 log_error_netdev(netdev,
356 "Could not append IFLA_IFNAME, attribute: %s",
362 r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
364 log_error_netdev(netdev,
365 "Could not append IFLA_MTU attribute: %s",
371 r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
373 log_error_netdev(netdev,
374 "Could not append IFLA_LINKINFO attribute: %s",
379 r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
380 netdev_kind_to_string(netdev->kind));
382 log_error_netdev(netdev,
383 "Could not append IFLA_INFO_DATA attribute: %s",
388 r = sd_rtnl_message_append_u32(m, IFLA_VTI_LINK, link->ifindex);
390 log_error_netdev(netdev,
391 "Could not append IFLA_IPTUN_LINK attribute: %s",
396 r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_LOCAL, &netdev->tunnel_local);
398 log_error_netdev(netdev,
399 "Could not append IFLA_IPTUN_LOCAL attribute: %s",
404 r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_REMOTE, &netdev->tunnel_remote);
406 log_error_netdev(netdev,
407 "Could not append IFLA_IPTUN_REMOTE attribute: %s",
412 r = sd_rtnl_message_close_container(m);
414 log_error_netdev(netdev,
415 "Could not append IFLA_INFO_DATA attribute: %s",
420 r = sd_rtnl_message_close_container(m);
422 log_error_netdev(netdev,
423 "Could not append IFLA_LINKINFO attribute: %s",
431 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback) {
432 _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
437 assert(link->network);
438 assert(link->network->tunnel);
440 netdev = link->network->tunnel;
443 assert(netdev->ifname);
444 assert(netdev->manager);
445 assert(netdev->manager->rtnl);
446 assert(netdev->manager->kmod_ctx);
448 /* Load kernel module first */
449 switch(netdev->kind) {
450 case NETDEV_KIND_IPIP:
451 case NETDEV_KIND_GRE:
452 case NETDEV_KIND_SIT:
453 r = load_module(netdev->manager->kmod_ctx,
454 netdev_kind_to_string(netdev->kind));
456 log_error_netdev(netdev,
457 "Could not load Kernel module: %s . Ignoring",
458 netdev_kind_to_string(netdev->kind));
462 case NETDEV_KIND_VTI:
468 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
470 log_error_netdev(netdev,
471 "Could not allocate RTM_NEWLINK message: %s",
476 switch(netdev->kind) {
477 case NETDEV_KIND_IPIP:
478 r = netdev_fill_ipip_rtnl_message(link, m);
482 case NETDEV_KIND_SIT:
483 r = netdev_fill_sit_rtnl_message(link, m);
487 case NETDEV_KIND_VTI:
488 netdev_fill_vti_rtnl_message(link, m);
492 case NETDEV_KIND_GRE:
493 r = netdev_fill_ipgre_rtnl_message(link, m);
501 r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, netdev, 0, NULL);
503 log_error_netdev(netdev,
504 "Could not send rtnetlink message: %s", strerror(-r));
508 log_debug_netdev(netdev, "Creating tunnel netdev: %s",
509 netdev_kind_to_string(netdev->kind));
511 netdev->state = NETDEV_STATE_CREATING;