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/*
* Distributed under the terms of the GNU GPL version 2.
* Copyright (c) 2007, 2008, 2009, 2010 Nicira Networks.
*
* Significant portions of this file may be copied from parts of the Linux
* kernel, by Linus Torvalds and others.
*/
/* Handle changes to managed devices */
#include <linux/netdevice.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;
struct dp_port *p;
struct datapath *dp;
if (is_internal_dev(dev))
vport = internal_dev_get_vport(dev);
else
vport = netdev_get_vport(dev);
if (!vport)
return NOTIFY_DONE;
p = vport_get_dp_port(vport);
if (!p)
return NOTIFY_DONE;
dp = p->dp;
switch (event) {
case NETDEV_UNREGISTER:
mutex_lock(&dp->mutex);
dp_detach_port(p, 1);
mutex_unlock(&dp->mutex);
break;
case NETDEV_CHANGENAME:
if (p->port_no != ODPP_LOCAL) {
mutex_lock(&dp->mutex);
dp_sysfs_del_if(p);
dp_sysfs_add_if(p);
mutex_unlock(&dp->mutex);
}
break;
case NETDEV_CHANGEMTU:
if (!is_internal_dev(dev))
set_internal_devs_mtu(dp);
break;
}
return NOTIFY_DONE;
}
struct notifier_block dp_device_notifier = {
.notifier_call = dp_device_event
};
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