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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>
This commit is contained in:
Nikolay Aleksandrov 2016-02-26 21:20:02 +01:00 committed by David S. Miller
parent 7f0aec7a66
commit 4950cfd1e6
1 changed files with 4 additions and 1 deletions
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5
net/bridge/br_multicast.c
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@ -1853,7 +1853,10 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val)
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;