net: convert resend IGMP to notifier event
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>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 07f257d4..ae9864c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -715,15 +715,6 @@
return err;
}
-static void __bond_resend_igmp_join_requests(struct net_device *dev)
-{
- struct in_device *in_dev;
-
- in_dev = __in_dev_get_rcu(dev);
- if (in_dev)
- ip_mc_rejoin_groups(in_dev);
-}
-
/*
* Retrieve the list of registered multicast addresses for the bonding
* device and retransmit an IGMP JOIN request to the current active
@@ -731,33 +722,12 @@
*/
static void bond_resend_igmp_join_requests(struct bonding *bond)
{
- struct net_device *bond_dev, *vlan_dev, *upper_dev;
- struct vlan_entry *vlan;
-
- read_lock(&bond->lock);
- rcu_read_lock();
-
- bond_dev = bond->dev;
-
- /* rejoin all groups on bond device */
- __bond_resend_igmp_join_requests(bond_dev);
-
- /*
- * if bond is enslaved to a bridge,
- * then rejoin all groups on its master
- */
- upper_dev = netdev_master_upper_dev_get_rcu(bond_dev);
- if (upper_dev && upper_dev->priv_flags & IFF_EBRIDGE)
- __bond_resend_igmp_join_requests(upper_dev);
-
- /* rejoin all groups on vlan devices */
- list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
- vlan_dev = __vlan_find_dev_deep(bond_dev, htons(ETH_P_8021Q),
- vlan->vlan_id);
- if (vlan_dev)
- __bond_resend_igmp_join_requests(vlan_dev);
+ if (!rtnl_trylock()) {
+ queue_delayed_work(bond->wq, &bond->mcast_work, 0);
+ return;
}
- rcu_read_unlock();
+ call_netdevice_notifiers(NETDEV_RESEND_IGMP, bond->dev);
+ rtnl_unlock();
/* We use curr_slave_lock to protect against concurrent access to
* igmp_retrans from multiple running instances of this function and
@@ -3234,6 +3204,10 @@
case NETDEV_FEAT_CHANGE:
bond_compute_features(bond);
break;
+ case NETDEV_RESEND_IGMP:
+ /* Propagate to master device */
+ call_netdevice_notifiers(event, slave->bond->dev);
+ break;
default:
break;
}