/*
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/*
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* Device event handling
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* Device event handling
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* Linux ethernet bridge
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* Linux ethernet bridge
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*
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*
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* Authors:
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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*
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* $Id: br_notify.c,v 1.1.1.1 2004-04-15 01:16:27 phoenix Exp $
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* $Id: br_notify.c,v 1.1.1.1 2004-04-15 01:16:27 phoenix Exp $
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*
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*
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* This program is free software; you can redistribute it and/or
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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* 2 of the License, or (at your option) any later version.
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*/
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*/
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/if_bridge.h>
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#include <linux/if_bridge.h>
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#include "br_private.h"
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#include "br_private.h"
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static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr);
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static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr);
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struct notifier_block br_device_notifier =
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struct notifier_block br_device_notifier =
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{
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{
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br_device_event,
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br_device_event,
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NULL,
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NULL,
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0
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0
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};
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};
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static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
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static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
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{
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{
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struct net_device *dev;
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struct net_device *dev;
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struct net_bridge_port *p;
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struct net_bridge_port *p;
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dev = ptr;
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dev = ptr;
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p = dev->br_port;
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p = dev->br_port;
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if (p == NULL)
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if (p == NULL)
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return NOTIFY_DONE;
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return NOTIFY_DONE;
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switch (event)
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switch (event)
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{
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{
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case NETDEV_CHANGEADDR:
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case NETDEV_CHANGEADDR:
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read_lock(&p->br->lock);
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read_lock(&p->br->lock);
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br_fdb_changeaddr(p, dev->dev_addr);
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br_fdb_changeaddr(p, dev->dev_addr);
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br_stp_recalculate_bridge_id(p->br);
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br_stp_recalculate_bridge_id(p->br);
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read_unlock(&p->br->lock);
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read_unlock(&p->br->lock);
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break;
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break;
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case NETDEV_GOING_DOWN:
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case NETDEV_GOING_DOWN:
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/* extend the protocol to send some kind of notification? */
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/* extend the protocol to send some kind of notification? */
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break;
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break;
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case NETDEV_DOWN:
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case NETDEV_DOWN:
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if (p->br->dev.flags & IFF_UP) {
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if (p->br->dev.flags & IFF_UP) {
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read_lock(&p->br->lock);
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read_lock(&p->br->lock);
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br_stp_disable_port(dev->br_port);
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br_stp_disable_port(dev->br_port);
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read_unlock(&p->br->lock);
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read_unlock(&p->br->lock);
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}
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}
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break;
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break;
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case NETDEV_UP:
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case NETDEV_UP:
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if (p->br->dev.flags & IFF_UP) {
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if (p->br->dev.flags & IFF_UP) {
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read_lock(&p->br->lock);
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read_lock(&p->br->lock);
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br_stp_enable_port(dev->br_port);
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br_stp_enable_port(dev->br_port);
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read_unlock(&p->br->lock);
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read_unlock(&p->br->lock);
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}
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}
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break;
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break;
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case NETDEV_UNREGISTER:
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case NETDEV_UNREGISTER:
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br_del_if(dev->br_port->br, dev);
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br_del_if(dev->br_port->br, dev);
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break;
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break;
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}
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}
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return NOTIFY_DONE;
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return NOTIFY_DONE;
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}
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}
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