forked from luck/tmp_suning_uos_patched
4aa5dee4d9
Until now, bond_resend_igmp_join_requests() looks for vlans attached to bonding device, bridge where bonding act as port manually. It does not care of other scenarios, like stacked bonds or team device above. Make this more generic and use netdev notifier to propagate the event to upper devices and to actually call ip_mc_rejoin_groups(). Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
|
|
* Device event handling
|
|
* Linux ethernet bridge
|
|
*
|
|
* Authors:
|
|
* Lennert Buytenhek <buytenh@gnu.org>
|
|
*
|
|
* 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/rtnetlink.h>
|
|
#include <net/net_namespace.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
|
|
};
|
|
|
|
/*
|
|
* Handle changes in state of network devices enslaved to a bridge.
|
|
*
|
|
* Note: don't care about up/down if bridge itself is down, because
|
|
* port state is checked when bridge is brought up.
|
|
*/
|
|
static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
struct net_bridge_port *p;
|
|
struct net_bridge *br;
|
|
bool changed_addr;
|
|
int err;
|
|
|
|
/* register of bridge completed, add sysfs entries */
|
|
if ((dev->priv_flags & IFF_EBRIDGE) && event == NETDEV_REGISTER) {
|
|
br_sysfs_addbr(dev);
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
/* not a port of a bridge */
|
|
p = br_port_get_rtnl(dev);
|
|
if (!p)
|
|
return NOTIFY_DONE;
|
|
|
|
br = p->br;
|
|
|
|
switch (event) {
|
|
case NETDEV_CHANGEMTU:
|
|
dev_set_mtu(br->dev, br_min_mtu(br));
|
|
break;
|
|
|
|
case NETDEV_CHANGEADDR:
|
|
spin_lock_bh(&br->lock);
|
|
br_fdb_changeaddr(p, dev->dev_addr);
|
|
changed_addr = br_stp_recalculate_bridge_id(br);
|
|
spin_unlock_bh(&br->lock);
|
|
|
|
if (changed_addr)
|
|
call_netdevice_notifiers(NETDEV_CHANGEADDR, br->dev);
|
|
|
|
break;
|
|
|
|
case NETDEV_CHANGE:
|
|
br_port_carrier_check(p);
|
|
break;
|
|
|
|
case NETDEV_FEAT_CHANGE:
|
|
netdev_update_features(br->dev);
|
|
break;
|
|
|
|
case NETDEV_DOWN:
|
|
spin_lock_bh(&br->lock);
|
|
if (br->dev->flags & IFF_UP)
|
|
br_stp_disable_port(p);
|
|
spin_unlock_bh(&br->lock);
|
|
break;
|
|
|
|
case NETDEV_UP:
|
|
if (netif_running(br->dev) && netif_oper_up(dev)) {
|
|
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;
|
|
|
|
case NETDEV_CHANGENAME:
|
|
err = br_sysfs_renameif(p);
|
|
if (err)
|
|
return notifier_from_errno(err);
|
|
break;
|
|
|
|
case NETDEV_PRE_TYPE_CHANGE:
|
|
/* Forbid underlaying device to change its type. */
|
|
return NOTIFY_BAD;
|
|
|
|
case NETDEV_RESEND_IGMP:
|
|
/* Propagate to master device */
|
|
call_netdevice_notifiers(event, br->dev);
|
|
break;
|
|
}
|
|
|
|
/* Events that may cause spanning tree to refresh */
|
|
if (event == NETDEV_CHANGEADDR || event == NETDEV_UP ||
|
|
event == NETDEV_CHANGE || event == NETDEV_DOWN)
|
|
br_ifinfo_notify(RTM_NEWLINK, p);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|