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Date: Tue, 12 Feb 2013 12:35:04 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Julian Anastasov <ja@....bg>, Steffen Klassert <steffen.klassert@...unet.com>, "David S. Miller" <davem@...emloft.net> Subject: [ 44/61] ipv4: Dont update the pmtu on mtu locked routes 3.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Steffen Klassert <steffen.klassert@...unet.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@....bg> Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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