src/network/networkd-netdev-bridge.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  Tom Gundersen <teg@jklm.no>
   7     Copyright 2014  Susant Sahani
   8
   9     systemd is free software; you can redistribute it and/or modify it
  10     under the terms of the GNU Lesser General Public License as published by
  11     the Free Software Foundation; either version 2.1 of the License, or
  12     (at your option) any later version.
  13
  14     systemd is distributed in the hope that it will be useful, but
  15     WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17     Lesser General Public License for more details.
  18
  19     You should have received a copy of the GNU Lesser General Public License
  20     along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <net/if.h>
  24
  25 #include "networkd-netdev-bridge.h"
  26 #include "missing.h"
  27 #include "netlink-util.h"
  28
  29 /* callback for brige netdev's parameter set */
  30 static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
  31         _cleanup_netdev_unref_ NetDev *netdev = userdata;
  32         int r;
  33
  34         assert(netdev);
  35         assert(m);
  36
  37         r = sd_netlink_message_get_errno(m);
  38         if (r < 0) {
  39                 log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
  40                 return 1;
  41         }
  42
  43         log_netdev_debug(netdev, "Bridge parametres set success");
  44
  45         return 1;
  46 }
  47
  48 static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
  49         _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL;
  50         Bridge *b;
  51         int r;
  52
  53         assert(netdev);
  54
  55         b = BRIDGE(netdev);
  56
  57         assert(b);
  58
  59         r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
  60         if (r < 0)
  61                 return log_netdev_error_errno(netdev, r, "Could not allocate RTM_SETLINK message: %m");
  62
  63         r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK);
  64         if (r < 0)
  65                 return log_link_error_errno(link, r, "Could not set netlink flags: %m");
  66
  67         r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
  68         if (r < 0)
  69                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_PROTINFO attribute: %m");
  70
  71         r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
  72         if (r < 0)
  73                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
  74
  75         /* convert to jiffes */
  76         if (b->forward_delay > 0) {
  77                 r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
  78                 if (r < 0)
  79                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_FORWARD_DELAY attribute: %m");
  80         }
  81
  82         if (b->hello_time > 0) {
  83                 r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
  84                 if (r < 0)
  85                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_HELLO_TIME attribute: %m");
  86         }
  87
  88         if (b->max_age > 0) {
  89                 r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
  90                 if (r < 0)
  91                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
  92         }
  93
  94         r = sd_netlink_message_close_container(req);
  95         if (r < 0)
  96                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
  97
  98         r = sd_netlink_message_close_container(req);
  99         if (r < 0)
 100                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
 101
 102         r = sd_netlink_call_async(netdev->manager->rtnl, req, netdev_bridge_set_handler, netdev, 0, NULL);
 103         if (r < 0)
 104                 return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
 105
 106         netdev_ref(netdev);
 107
 108         return r;
 109 }
 110
 111 const NetDevVTable bridge_vtable = {
 112         .object_size = sizeof(Bridge),
 113         .sections = "Match\0NetDev\0Bridge\0",
 114         .post_create = netdev_bridge_post_create,
 115         .create_type = NETDEV_CREATE_MASTER,
 116 };