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Date: Tue, 11 Oct 2011 13:09:22 +0200 From: Steffen Klassert <steffen.klassert@...unet.com> To: David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org Subject: [PATCH 1/4] ipv4: Fix pmtu propagating Since commit 2c8cec5c (ipv4: Cache learned PMTU information in inetpeer) we cache the learned pmtu informations in inetpeer and propagate these informations with the dst_ops->check() functions. However, these functions might not be called for udp and raw packets. As a consequence, we don't use the learned pmtu informations in these cases. With this patch we call dst_check() from ip_setup_cork() to propagate the pmtu informations. Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> --- net/ipv4/ip_output.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 8c65633..f682437 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1063,6 +1063,11 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork, rt = *rtp; if (unlikely(!rt)) return -EFAULT; + + rt = (struct rtable *)dst_check(&rt->dst, 0); + if (!rt) + return -EHOSTUNREACH; + /* * We steal reference to this route, caller should not release it */ -- 1.7.0.4 -- 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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