src/network/networkd-netdev-vxlan.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4     This file is part of systemd.
   5
   6     Copyright 2014 Susant Sahani <susant@redhat.com>
   7
   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.
  12
  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.
  17
  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/>.
  20 ***/
  21
  22 #include <netinet/ether.h>
  23 #include <arpa/inet.h>
  24 #include <net/if.h>
  25
  26 #include "sd-rtnl.h"
  27 #include "networkd-netdev-vxlan.h"
  28 #include "networkd-link.h"
  29 #include "missing.h"
  30
  31 static int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
  32         VxLan *v = VXLAN(netdev);
  33         int r;
  34
  35         assert(netdev);
  36         assert(v);
  37         assert(link);
  38         assert(m);
  39
  40
  41         if (v->id <= VXLAN_VID_MAX) {
  42                 r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_ID, v->id);
  43                 if (r < 0) {
  44                         log_netdev_error(netdev,
  45                                          "Could not append IFLA_VXLAN_ID attribute: %s",
  46                                          strerror(-r));
  47                         return r;
  48                 }
  49         }
  50
  51         r = sd_rtnl_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in);
  52         if (r < 0) {
  53                 log_netdev_error(netdev,
  54                                  "Could not append IFLA_VXLAN_GROUP attribute: %s",
  55                                  strerror(-r));
  56                 return r;
  57         }
  58
  59         r = sd_rtnl_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex);
  60         if (r < 0) {
  61                 log_netdev_error(netdev,
  62                                  "Could not append IFLA_VXLAN_LINK attribute: %s",
  63                                  strerror(-r));
  64                 return r;
  65         }
  66
  67         if(v->ttl) {
  68                 r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl);
  69                 if (r < 0) {
  70                         log_netdev_error(netdev,
  71                                          "Could not append IFLA_VXLAN_TTL attribute: %s",
  72                                          strerror(-r));
  73                         return r;
  74                 }
  75         }
  76
  77         if(v->tos) {
  78                 r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_TOS, v->tos);
  79                 if (r < 0) {
  80                         log_netdev_error(netdev,
  81                                          "Could not append IFLA_VXLAN_TOS attribute: %s",
  82                                          strerror(-r));
  83                         return r;
  84                 }
  85         }
  86
  87         r = sd_rtnl_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning);
  88         if (r < 0) {
  89                 log_netdev_error(netdev,
  90                                  "Could not append IFLA_VXLAN_LEARNING attribute: %s",
  91                                  strerror(-r));
  92                 return r;
  93         }
  94
  95         return r;
  96 }
  97
  98 static int netdev_vxlan_verify(NetDev *netdev, const char *filename) {
  99         VxLan *v = VXLAN(netdev);
 100
 101         assert(netdev);
 102         assert(v);
 103         assert(filename);
 104
 105         if (v->id > VXLAN_VID_MAX) {
 106                 log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
 107                 return -EINVAL;
 108         }
 109
 110         return 0;
 111 }
 112
 113 static void vxlan_init(NetDev *netdev) {
 114         VxLan *v = VXLAN(netdev);
 115
 116         assert(netdev);
 117         assert(v);
 118
 119         v->id = VXLAN_VID_MAX + 1;
 120         v->learning = true;
 121 }
 122
 123 const NetDevVTable vxlan_vtable = {
 124         .object_size = sizeof(VxLan),
 125         .init = vxlan_init,
 126         .sections = "Match\0NetDev\0VXLAN\0",
 127         .fill_message_create = netdev_vxlan_fill_message_create,
 128         .create_type = NETDEV_CREATE_STACKED,
 129         .config_verify = netdev_vxlan_verify,
 130 };