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_close_container(m);
212 log_error_netdev(netdev,
213 "Could not append IFLA_INFO_DATA attribute: %s",
218 r = sd_rtnl_message_close_container(m);
220 log_error_netdev(netdev,
221 "Could not append IFLA_LINKINFO attribute: %s",
229 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback) {
230 _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
235 assert(link->network);
236 assert(link->network->tunnel);
238 netdev = link->network->tunnel;
241 assert(netdev->ifname);
242 assert(netdev->manager);
243 assert(netdev->manager->rtnl);
244 assert(netdev->manager->kmod_ctx);
246 /* Load kernel module first */
247 switch(netdev->kind) {
248 case NETDEV_KIND_IPIP:
249 case NETDEV_KIND_GRE:
250 case NETDEV_KIND_SIT:
251 r = load_module(netdev->manager->kmod_ctx,
252 netdev_kind_to_string(netdev->kind));
254 log_error_netdev(netdev,
255 "Could not load Kernel module: %s . Ignoring",
256 netdev_kind_to_string(netdev->kind));
264 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
266 log_error_netdev(netdev,
267 "Could not allocate RTM_NEWLINK message: %s",
272 switch(netdev->kind) {
273 case NETDEV_KIND_IPIP:
274 r = netdev_fill_ipip_rtnl_message(link, m);
278 case NETDEV_KIND_SIT:
279 r = netdev_fill_sit_rtnl_message(link, m);
283 case NETDEV_KIND_GRE:
288 r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, netdev, 0, NULL);
290 log_error_netdev(netdev,
291 "Could not send rtnetlink message: %s", strerror(-r));
295 log_debug_netdev(netdev, "Creating tunnel netdev: %s",
296 netdev_kind_to_string(netdev->kind));
298 netdev->state = NETDEV_STATE_CREATING;