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Diffstat (limited to 'src/network/networkd-netdev-veth.c')
-rw-r--r--src/network/networkd-netdev-veth.c143
1 files changed, 143 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..aca8022f00
--- /dev/null
+++ b/src/network/networkd-netdev-veth.c
@@ -0,0 +1,143 @@
+/*-*- 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, sd_rtnl_message *m) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->ifname);
+ assert(m);
+
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IFNAME, attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA, "veth");
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container(m, VETH_INFO_PEER);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if (netdev->ifname_peer) {
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname_peer);
+ if (r < 0) {
+ log_error("Failed to add netlink interface name: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac_peer) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac_peer);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+
+static int netdev_veth_verify(NetDev *netdev, const char *filename) {
+ int r;
+
+ assert(netdev);
+ assert(filename);
+
+ if (!netdev->ifname_peer) {
+ log_warning("Veth NetDev without peer name configured in %s. Ignoring",
+ filename);
+ return -EINVAL;
+ }
+
+ if (!netdev->mac_peer) {
+ r = netdev_get_mac(netdev->ifname_peer, &netdev->mac_peer);
+ if (r < 0) {
+ log_warning("Failed to generate predictable MAC address for %s. Ignoring",
+ netdev->ifname_peer);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+const NetDevVTable veth_vtable = {
+ .fill_message_create = netdev_veth_fill_message_create,
+ .config_verify = netdev_veth_verify,
+};