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>
25 #include <linux/veth.h>
28 #include "networkd-netdev-veth.h"
30 static int netdev_veth_fill_message_create(NetDev *netdev, sd_rtnl_message *m) {
34 assert(netdev->ifname);
37 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
39 log_error_netdev(netdev,
40 "Could not append IFLA_IFNAME, attribute: %s",
46 r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
48 log_error_netdev(netdev,
49 "Colud not append IFLA_ADDRESS attribute: %s",
55 r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
57 log_error_netdev(netdev,
58 "Could not append IFLA_LINKINFO attribute: %s",
63 r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, "veth");
65 log_error_netdev(netdev,
66 "Could not append IFLA_INFO_DATA attribute: %s",
71 r = sd_rtnl_message_open_container(m, VETH_INFO_PEER);
73 log_error_netdev(netdev,
74 "Could not append IFLA_IPTUN_LINK attribute: %s",
79 if (netdev->ifname_peer) {
80 r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname_peer);
82 log_error("Failed to add netlink interface name: %s", strerror(-r));
87 if (netdev->mac_peer) {
88 r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac_peer);
90 log_error_netdev(netdev,
91 "Colud not append IFLA_ADDRESS attribute: %s",
97 r = sd_rtnl_message_close_container(m);
99 log_error_netdev(netdev,
100 "Could not append IFLA_INFO_DATA attribute: %s",
105 r = sd_rtnl_message_close_container(m);
107 log_error_netdev(netdev,
108 "Could not append IFLA_LINKINFO attribute: %s",
116 static int netdev_veth_verify(NetDev *netdev, const char *filename) {
122 if (!netdev->ifname_peer) {
123 log_warning("Veth NetDev without peer name configured in %s. Ignoring",
128 if (!netdev->mac_peer) {
129 r = netdev_get_mac(netdev->ifname_peer, &netdev->mac_peer);
131 log_warning("Failed to generate predictable MAC address for %s. Ignoring",
132 netdev->ifname_peer);
140 const NetDevVTable veth_vtable = {
141 .fill_message_create = netdev_veth_fill_message_create,
142 .config_verify = netdev_veth_verify,