From: Vlad Yasevich vyasevich@gmail.com
[ 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 --- net/core/dev.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/core/dev.c b/net/core/dev.c index 630704d8d6a2..3b67c1e5756f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1300,6 +1300,7 @@ 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);