100 строки
2.6 KiB
C
100 строки
2.6 KiB
C
/*
|
|
* Copyright (c) 2007-2012 Nicira, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* This program 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
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA
|
|
*/
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <net/genetlink.h>
|
|
#include <net/netns/generic.h>
|
|
|
|
#include "datapath.h"
|
|
#include "vport-internal_dev.h"
|
|
#include "vport-netdev.h"
|
|
|
|
static void dp_detach_port_notify(struct vport *vport)
|
|
{
|
|
struct sk_buff *notify;
|
|
struct datapath *dp;
|
|
|
|
dp = vport->dp;
|
|
notify = ovs_vport_cmd_build_info(vport, 0, 0,
|
|
OVS_VPORT_CMD_DEL);
|
|
ovs_dp_detach_port(vport);
|
|
if (IS_ERR(notify)) {
|
|
genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
|
|
0, PTR_ERR(notify));
|
|
return;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&dp_vport_genl_family,
|
|
ovs_dp_get_net(dp), notify, 0,
|
|
0, GFP_KERNEL);
|
|
}
|
|
|
|
void ovs_dp_notify_wq(struct work_struct *work)
|
|
{
|
|
struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
|
|
struct datapath *dp;
|
|
|
|
ovs_lock();
|
|
list_for_each_entry(dp, &ovs_net->dps, list_node) {
|
|
int i;
|
|
|
|
for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
|
|
struct vport *vport;
|
|
struct hlist_node *n;
|
|
|
|
hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
|
|
if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
|
|
continue;
|
|
|
|
if (!(vport->dev->priv_flags & IFF_OVS_DATAPATH))
|
|
dp_detach_port_notify(vport);
|
|
}
|
|
}
|
|
}
|
|
ovs_unlock();
|
|
}
|
|
|
|
static int dp_device_event(struct notifier_block *unused, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
struct ovs_net *ovs_net;
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
struct vport *vport = NULL;
|
|
|
|
if (!ovs_is_internal_dev(dev))
|
|
vport = ovs_netdev_get_vport(dev);
|
|
|
|
if (!vport)
|
|
return NOTIFY_DONE;
|
|
|
|
if (event == NETDEV_UNREGISTER) {
|
|
/* upper_dev_unlink and decrement promisc immediately */
|
|
ovs_netdev_detach_dev(vport);
|
|
|
|
/* schedule vport destroy, dev_put and genl notification */
|
|
ovs_net = net_generic(dev_net(dev), ovs_net_id);
|
|
queue_work(system_wq, &ovs_net->dp_notify_work);
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
struct notifier_block ovs_dp_device_notifier = {
|
|
.notifier_call = dp_device_event
|
|
};
|