/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2014 Susant Sahani <susant@redhat.com> systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <netinet/ether.h> #include <arpa/inet.h> #include <net/if.h> #include <linux/veth.h> #include "sd-rtnl.h" #include "networkd-netdev-veth.h" static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) { Veth *v = VETH(netdev); int r; assert(netdev); assert(!link); assert(v); assert(m); r = sd_rtnl_message_open_container(m, VETH_INFO_PEER); if (r < 0) { log_netdev_error(netdev, "Could not append VETH_INFO_PEER attribute: %s", strerror(-r)); return r; } if (v->ifname_peer) { r = sd_rtnl_message_append_string(m, IFLA_IFNAME, v->ifname_peer); if (r < 0) return log_error_errno(r, "Failed to add netlink interface name: %m"); } if (v->mac_peer) { r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer); if (r < 0) { log_netdev_error(netdev, "Could not append IFLA_ADDRESS attribute: %s", strerror(-r)); return r; } } r = sd_rtnl_message_close_container(m); if (r < 0) { log_netdev_error(netdev, "Could not append IFLA_INFO_DATA attribute: %s", strerror(-r)); return r; } return r; } static int netdev_veth_verify(NetDev *netdev, const char *filename) { Veth *v = VETH(netdev); int r; assert(netdev); assert(v); assert(filename); if (!v->ifname_peer) { log_warning("Veth NetDev without peer name configured in %s. Ignoring", filename); return -EINVAL; } if (!v->mac_peer) { r = netdev_get_mac(v->ifname_peer, &v->mac_peer); if (r < 0) { log_warning("Failed to generate predictable MAC address for %s. Ignoring", v->ifname_peer); return -EINVAL; } } return 0; } static void veth_done(NetDev *n) { Veth *v = VETH(n); assert(n); assert(v); free(v->ifname_peer); free(v->mac_peer); } const NetDevVTable veth_vtable = { .object_size = sizeof(Veth), .sections = "Match\0NetDev\0Peer\0", .done = veth_done, .fill_message_create = netdev_veth_fill_message_create, .create_type = NETDEV_CREATE_INDEPENDENT, .config_verify = netdev_veth_verify, };