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Commit 566cfd8f authored by Simon Arlott's avatar Simon Arlott Committed by David S. Miller
Browse files

[IPV6]: Don't update ADVMSS on routes where the MTU is not also updated 



The ADVMSS value was incorrectly updated for ALL routes when the MTU
is updated because it's outside the effect of the if statement's
condition.

Signed-off-by: default avatarSimon Arlott <simon@fire.lp0.eu>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 342ff7b2

net/ipv6/route.c

+3 −2
Original line number Diff line number Diff line
@@ -1983,9 +1983,10 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg) 
	    !dst_metric_locked(&rt->u.dst, RTAX_MTU) &&

	    (dst_mtu(&rt->u.dst) > arg->mtu ||

	     (dst_mtu(&rt->u.dst) < arg->mtu &&

	      dst_mtu(&rt->u.dst) == idev->cnf.mtu6)))

	      dst_mtu(&rt->u.dst) == idev->cnf.mtu6))) {

		rt->u.dst.metrics[RTAX_MTU-1] = arg->mtu;

		rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(arg->mtu);

	}

	return 0;

}