Commit fa1e492a authored Jan 16, 2013 by Steffen Klassert Committed by David S. Miller Jan 17, 2013

ipv4: Don't update the pmtu on mtu locked routes



Routes with locked mtu should not use learned pmtu informations,
so do not update the pmtu on these routes.

Reported-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 38d523e2

net/ipv4/route.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -912,6 +912,9 @@ static void __ip_rt_update_pmtu(struct rtable rt, struct flowi4 fl4, u32 mtu)
		struct dst_entry *dst = &rt->dst;
		struct fib_result res;

		if (dst_metric_locked(dst, RTAX_MTU))
		return;

		if (dst->dev->mtu < mtu)
		return;