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->name);
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_close_container(m);
107 log_error_netdev(netdev,
108 "Could not append IFLA_INFO_DATA attribute: %s",
113 r = sd_rtnl_message_close_container(m);
115 log_error_netdev(netdev,
116 "Could not append IFLA_LINKINFO attribute: %s",
124 int netdev_create_tunnel(Link *link, sd_rtnl_message_handler_t callback) {
125 _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
130 assert(link->network);
131 assert(link->network->tunnel);
133 netdev = link->network->tunnel;
136 assert(netdev->name);
137 assert(netdev->manager);
138 assert(netdev->manager->rtnl);
139 assert(netdev->manager->kmod_ctx);
141 /* Load kernel module first */
142 switch(netdev->kind) {
143 case NETDEV_KIND_IPIP:
144 case NETDEV_KIND_GRE:
145 case NETDEV_KIND_SIT:
146 r = load_module(netdev->manager->kmod_ctx,
147 netdev_kind_to_string(netdev->kind));
149 log_error_netdev(netdev,
150 "Could not load Kernel module: %s . Ignoring",
151 netdev_kind_to_string(netdev->kind));
159 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
161 log_error_netdev(netdev,
162 "Could not allocate RTM_NEWLINK message: %s",
167 switch(netdev->kind) {
168 case NETDEV_KIND_IPIP:
169 r = netdev_fill_ipip_rtnl_message(link, m);
173 case NETDEV_KIND_GRE:
174 case NETDEV_KIND_SIT:
179 r = sd_rtnl_call_async(netdev->manager->rtnl, m, callback, netdev, 0, NULL);
181 log_error_netdev(netdev,
182 "Could not send rtnetlink message: %s", strerror(-r));
186 log_debug_netdev(netdev, "Creating tunnel netdev: %s",
187 netdev_kind_to_string(netdev->kind));
189 netdev->state = NETDEV_STATE_CREATING;