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/***
This file is part of systemd.
Copyright 2014 Tom Gundersen <teg@jklm.no>
Copyright 2014 Susant Sahani
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 "missing.h"
#include "netlink-util.h"
#include "networkd.h"
#include "networkd-netdev-bridge.h"
/* callback for brige netdev's parameter set */
static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
_cleanup_netdev_unref_ NetDev *netdev = userdata;
int r;
assert(netdev);
assert(m);
r = sd_netlink_message_get_errno(m);
if (r < 0) {
log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
return 1;
}
log_netdev_debug(netdev, "Bridge parametres set success");
return 1;
}
static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
Bridge *b;
int r;
assert(netdev);
b = BRIDGE(netdev);
assert(b);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not allocate RTM_SETLINK message: %m");
r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK);
if (r < 0)
return log_link_error_errno(link, r, "Could not set netlink flags: %m");
r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_PROTINFO attribute: %m");
r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
/* convert to jiffes */
if (b->forward_delay > 0) {
r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_FORWARD_DELAY attribute: %m");
}
if (b->hello_time > 0) {
r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_HELLO_TIME attribute: %m");
}
if (b->max_age > 0) {
r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
}
if (b->mcast_querier >= 0) {
r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_QUERIER attribute: %m");
}
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
r = sd_netlink_message_close_container(req);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
r = sd_netlink_call_async(netdev->manager->rtnl, req, netdev_bridge_set_handler, netdev, 0, NULL);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
netdev_ref(netdev);
return r;
}
static void bridge_init(NetDev *n) {
Bridge *b;
b = BRIDGE(n);
assert(b);
b->mcast_querier = -1;
}
const NetDevVTable bridge_vtable = {
.object_size = sizeof(Bridge),
.init = bridge_init,
.sections = "Match\0NetDev\0Bridge\0",
.post_create = netdev_bridge_post_create,
.create_type = NETDEV_CREATE_MASTER,
};
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