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bridge: mcast: do nothing if port's multicast_router is set to the same val

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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;