src/network/networkd-netdev-vxlan.c

	networkd-netdev-vxlan.c revision aa9f11405829fd4755fef28602a7167dba3ddc89
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco/***
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    This file is part of systemd.
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    Copyright 2014 Susant Sahani <susant@redhat.com>
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    systemd is free software; you can redistribute it and/or modify it
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    under the terms of the GNU Lesser General Public License as published by
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    the Free Software Foundation; either version 2.1 of the License, or
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    (at your option) any later version.
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    systemd is distributed in the hope that it will be useful, but
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    WITHOUT ANY WARRANTY; without even the implied warranty of
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    Lesser General Public License for more details.
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    You should have received a copy of the GNU Lesser General Public License
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco    along with systemd; If not, see <http://www.gnu.org/licenses/>.
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco***/
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include <netinet/ether.h>
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include <arpa/inet.h>
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include <net/if.h>
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include "sd-rtnl.h"
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include "networkd-netdev-vxlan.h"
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco#include "missing.h"
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Koscostatic int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco        VxLan *v = VXLAN(netdev);
eef29f7a9e60072b7dc0e4cf5c8bb0ad6fa9ba89Lubos Kosco        int r;

        assert(netdev);
        assert(v);
        assert(link);
        assert(m);


        if (v->id <= VXLAN_VID_MAX) {
                r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_ID, v->id);
                if (r < 0) {
                        log_error_netdev(netdev,
                                         "Could not append IFLA_VXLAN_ID attribute: %s",
                                         strerror(-r));
                        return r;
                }
        }

        r = sd_rtnl_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
        if (r < 0) {
                log_error_netdev(netdev,
                                 "Could not append IFLA_VXLAN_GROUP attribute: %s",
                                 strerror(-r));
                return r;
        }

        r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex);
        if (r < 0) {
                log_error_netdev(netdev,
                                 "Could not append IFLA_VXLAN_LINK attribute: %s",
                                 strerror(-r));
                return r;
        }

        if(v->ttl) {
                r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
                if (r < 0) {
                        log_error_netdev(netdev,
                                         "Could not append IFLA_VXLAN_TTL attribute: %s",
                                         strerror(-r));
                        return r;
                }
        }

        if(v->tos) {
                r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TOS, v->tos);
                if (r < 0) {
                        log_error_netdev(netdev,
                                         "Could not append IFLA_VXLAN_TOS attribute: %s",
                                         strerror(-r));
                        return r;
                }
        }

        r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning);
        if (r < 0) {
                log_error_netdev(netdev,
                                 "Could not append IFLA_VXLAN_LEARNING attribute: %s",
                                 strerror(-r));
                return r;
        }

        return r;
}

static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
        VxLan *v = VXLAN(netdev);

        assert(netdev);
        assert(v);
        assert(filename);

        if (v->id > VXLAN_VID_MAX) {
                log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
                return -EINVAL;
        }

        return 0;
}

static void vxlan_init(NetDev *netdev) {
        VxLan *v = VXLAN(netdev);

        assert(netdev);
        assert(v);

        v->id = VXLAN_VID_MAX + 1;
        v->learning = true;
}

const NetDevVTable vxlan_vtable = {
        .object_size = sizeof(VxLan),
        .init = vxlan_init,
        .sections = "Match\0NetDev\0VXLAN\0",
        .fill_message_create = netdev_vxlan_fill_message_create,
        .create_type = NETDEV_CREATE_STACKED,
        .config_verify = netdev_vxlan_verify,
};