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/*
* Device event handling
* Linux ethernet bridge
*
* Authors:
* Lennert Buytenhek <buytenh@gnu.org>
*
* $Id: br_notify.c,v 1.2 2000/02/21 15:51:34 davem Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/if_bridge.h>
#include "br_private.h"
static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr);
struct notifier_block br_device_notifier =
{
br_device_event,
NULL,
0
};
static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
{
struct net_device *dev;
struct net_bridge_port *p;
dev = ptr;
p = dev->br_port;
if (p == NULL)
return NOTIFY_DONE;
switch (event)
{
case NETDEV_CHANGEADDR:
read_lock(&p->br->lock);
br_fdb_changeaddr(p, dev->dev_addr);
br_stp_recalculate_bridge_id(p->br);
read_unlock(&p->br->lock);
break;
case NETDEV_GOING_DOWN:
/* extend the protocol to send some kind of notification? */
break;
case NETDEV_DOWN:
if (p->br->dev.flags & IFF_UP) {
read_lock(&p->br->lock);
br_stp_disable_port(dev->br_port);
read_unlock(&p->br->lock);
}
break;
case NETDEV_UP:
if (p->br->dev.flags & IFF_UP) {
read_lock(&p->br->lock);
br_stp_enable_port(dev->br_port);
read_unlock(&p->br->lock);
}
break;
case NETDEV_UNREGISTER:
br_del_if(dev->br_port->br, dev);
break;
}
return NOTIFY_DONE;
}
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