46df7b8145
Following patch adds support for network namespace to openvswitch. Since it must release devices when namespaces are destroyed, a side effect of this patch is that the module no longer keeps a refcount but instead cleans up any state when it is unloaded. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
69 lines
1.8 KiB
C
69 lines
1.8 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 "datapath.h"
|
|
#include "vport-internal_dev.h"
|
|
#include "vport-netdev.h"
|
|
|
|
static int dp_device_event(struct notifier_block *unused, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
struct net_device *dev = ptr;
|
|
struct vport *vport;
|
|
|
|
if (ovs_is_internal_dev(dev))
|
|
vport = ovs_internal_dev_get_vport(dev);
|
|
else
|
|
vport = ovs_netdev_get_vport(dev);
|
|
|
|
if (!vport)
|
|
return NOTIFY_DONE;
|
|
|
|
switch (event) {
|
|
case NETDEV_UNREGISTER:
|
|
if (!ovs_is_internal_dev(dev)) {
|
|
struct sk_buff *notify;
|
|
struct datapath *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)) {
|
|
netlink_set_err(ovs_dp_get_net(dp)->genl_sock, 0,
|
|
ovs_dp_vport_multicast_group.id,
|
|
PTR_ERR(notify));
|
|
break;
|
|
}
|
|
|
|
genlmsg_multicast_netns(ovs_dp_get_net(dp), notify, 0,
|
|
ovs_dp_vport_multicast_group.id,
|
|
GFP_KERNEL);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
struct notifier_block ovs_dp_device_notifier = {
|
|
.notifier_call = dp_device_event
|
|
};
|