diff options
Diffstat (limited to 'src/network/networkd-netdev-veth.c')
-rw-r--r-- | src/network/networkd-netdev-veth.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/network/networkd-netdev-veth.c b/src/network/networkd-netdev-veth.c new file mode 100644 index 0000000000..b122a06c25 --- /dev/null +++ b/src/network/networkd-netdev-veth.c @@ -0,0 +1,111 @@ +/*** + 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 <net/if.h> +#include <linux/veth.h> + +#include "sd-netlink.h" + +#include "networkd-netdev-veth.h" + +static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) { + Veth *v; + int r; + + assert(netdev); + assert(!link); + assert(m); + + v = VETH(netdev); + + assert(v); + + r = sd_netlink_message_open_container(m, VETH_INFO_PEER); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append VETH_INFO_PEER attribute: %m"); + + if (v->ifname_peer) { + r = sd_netlink_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_netlink_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m"); + } + + r = sd_netlink_message_close_container(m); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m"); + + return r; +} + +static int netdev_veth_verify(NetDev *netdev, const char *filename) { + Veth *v; + int r; + + assert(netdev); + assert(filename); + + v = VETH(netdev); + + assert(v); + + 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; + + assert(n); + + v = VETH(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, +}; |