From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20130326173610.424776284@goodmis.org> Date: Tue, 26 Mar 2013 13:22:05 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Julian Anastasov , Steffen Klassert , "David S. Miller" Subject: [PATCH 66/86] ipv4: Dont update the pmtu on mtu locked routes References: <20130326172059.136127374@goodmis.org> Content-Disposition: inline; filename=0066-ipv4-Don-t-update-the-pmtu-on-mtu-locked-routes.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.6.11.1 stable review patch. If anyone has any objections, please let me know. ------------------ From: Steffen Klassert [ Upstream commit 4ac7bed1ff5f935525a8c71c347bbc8cdff9e067 ] Routes with locked mtu should not use learned pmtu informations, so do not update the pmtu on these routes. Reported-by: Julian Anastasov Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv4/route.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index fba3240..6d0ae55 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -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; -- 1.7.10.4