linux/net/openvswitch/vport-netdev.h
Jesse Gross 92eb1d4771 openvswitch: Use RCU callback when detaching netdevices.
Currently, each time a device is detached from an OVS datapath
we call synchronize RCU before freeing associated data structures.
However, if a bridge is deleted (which detaches all ports) when
many devices are connected then there can be a long delay.  This
switches to use call_rcu() to group the cost together.

Reported-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-28 14:04:34 -08:00

46 lines
1.2 KiB
C

/*
* Copyright (c) 2007-2011 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
*/
#ifndef VPORT_NETDEV_H
#define VPORT_NETDEV_H 1
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
#include "vport.h"
struct vport *ovs_netdev_get_vport(struct net_device *dev);
struct netdev_vport {
struct rcu_head rcu;
struct net_device *dev;
};
static inline struct netdev_vport *
netdev_vport_priv(const struct vport *vport)
{
return vport_priv(vport);
}
const char *ovs_netdev_get_name(const struct vport *);
const char *ovs_netdev_get_config(const struct vport *);
int ovs_netdev_get_ifindex(const struct vport *);
#endif /* vport_netdev.h */