2 * Device event handling
3 * Linux ethernet bridge
6 * Lennert Buytenhek <buytenh@gnu.org>
8 * $Id: br_notify.c,v 1.2 2000/02/21 15:51:34 davem Exp $
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/if_bridge.h>
18 #include "br_private.h"
20 static int br_device_event(struct notifier_block
*unused
, unsigned long event
, void *ptr
);
22 struct notifier_block br_device_notifier
=
29 static int br_device_event(struct notifier_block
*unused
, unsigned long event
, void *ptr
)
31 struct net_device
*dev
;
32 struct net_bridge_port
*p
;
42 case NETDEV_CHANGEADDR
:
43 read_lock(&p
->br
->lock
);
44 br_fdb_changeaddr(p
, dev
->dev_addr
);
45 br_stp_recalculate_bridge_id(p
->br
);
46 read_unlock(&p
->br
->lock
);
49 case NETDEV_GOING_DOWN
:
50 /* extend the protocol to send some kind of notification? */
54 if (p
->br
->dev
.flags
& IFF_UP
) {
55 read_lock(&p
->br
->lock
);
56 br_stp_disable_port(dev
->br_port
);
57 read_unlock(&p
->br
->lock
);
62 if (p
->br
->dev
.flags
& IFF_UP
) {
63 read_lock(&p
->br
->lock
);
64 br_stp_enable_port(dev
->br_port
);
65 read_unlock(&p
->br
->lock
);
69 case NETDEV_UNREGISTER
:
70 br_del_if(dev
->br_port
->br
, dev
);