| /* |
| * 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 "br_private.h" |
| |
| static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr); |
| |
| struct notifier_block br_device_notifier = |
| { |
| .notifier_call = br_device_event |
| }; |
| |
| static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr) |
| { |
| struct net_device *dev; |
| struct net_bridge_port *p; |
| struct net_bridge *br; |
| |
| dev = ptr; |
| p = dev->br_port; |
| |
| if (p == NULL) |
| return NOTIFY_DONE; |
| |
| br = p->br; |
| |
| switch (event) { |
| case NETDEV_CHANGEADDR: |
| spin_lock_bh(&br->lock); |
| br_fdb_changeaddr(p, dev->dev_addr); |
| if (br->dev->flags & IFF_UP) |
| br_stp_recalculate_bridge_id(br); |
| spin_unlock_bh(&br->lock); |
| break; |
| |
| case NETDEV_DOWN: |
| if (br->dev->flags & IFF_UP) { |
| spin_lock_bh(&br->lock); |
| br_stp_disable_port(p); |
| spin_unlock_bh(&br->lock); |
| } |
| break; |
| |
| case NETDEV_UP: |
| if (br->dev->flags & IFF_UP) { |
| spin_lock_bh(&br->lock); |
| br_stp_enable_port(p); |
| spin_unlock_bh(&br->lock); |
| } |
| break; |
| |
| case NETDEV_UNREGISTER: |
| br_del_if(br, dev); |
| break; |
| } |
| |
| return NOTIFY_DONE; |
| } |