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Date: Thu, 17 Jan 2013 07:58:10 +0100 From: Steffen Klassert <steffen.klassert@...unet.com> To: David Miller <davem@...emloft.net> Cc: Julian Anastasov <ja@....bg>, timo.teras@....fi, luky-37@...mail.com, pupilla@...ero.it, netdev@...r.kernel.org Subject: [PATCH 2/2] 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@....bg> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> --- net/ipv4/route.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 6e4a89c..259cbee 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; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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