Commit 8111e1b2 authored Mar 14, 2017 by Vlad Yasevich Committed by Greg Kroah-Hartman Dec 20, 2017

net: Resend IGMP memberships upon peer notification.




[ Upstream commit 37c343b4f4e70e9dc328ab04903c0ec8d154c1a4 ]

When we notify peers of potential changes,  it's also good to update
IGMP memberships.  For example, during VM migration, updating IGMP
memberships will redirect existing multicast streams to the VM at the
new location.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 1f08ebd8

net/core/dev.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1248,6 +1248,7 @@ void netdev_notify_peers(struct net_device *dev)
		{
		rtnl_lock();
		call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev);
		call_netdevice_notifiers(NETDEV_RESEND_IGMP, dev);
		rtnl_unlock();
		}
		EXPORT_SYMBOL(netdev_notify_peers);