bridge: mcast: do nothing if port's multicast_router is set to the same val
This is needed for the upcoming temporary port router. There's no point
to go through the logic if the value is the same.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 71c109b0..f1140cf5 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1853,7 +1853,10 @@
int err = -EINVAL;
spin_lock(&br->multicast_lock);
-
+ if (p->multicast_router == val) {
+ err = 0;
+ goto unlock;
+ }
switch (val) {
case MDB_RTR_TYPE_DISABLED:
p->multicast_router = MDB_RTR_TYPE_DISABLED;
