Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 44/61] ipv4: Dont update the pmtu on mtu locked routes | Date | Tue, 12 Feb 2013 12:35:04 -0800 |
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3.7-stable review patch. If anyone has any objections, please let me know.
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From: Steffen Klassert <steffen.klassert@secunet.com>
[ Upstream commit fa1e492aa3cbafba9f8fc6d05e5b08a3091daf4a ]
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ipv4/route.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -912,6 +912,9 @@ static void __ip_rt_update_pmtu(struct r struct dst_entry *dst = &rt->dst; struct fib_result res; + if (dst_metric_locked(dst, RTAX_MTU)) + return; + if (dst->dev->mtu < mtu) return;
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