From: Vlad Yasevich vyasevich@gmail.com
This patch has been added to the stable tree. If you have any objections, please let us know.
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[ 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@microsoft.com --- net/core/dev.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/core/dev.c b/net/core/dev.c index 33674208d325..4d4213b6f7f6 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1268,6 +1268,7 @@ 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);