From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Mon, 26 Aug 2013 10:31:19 +0000 (+0200)
Subject: xfrm: revert ipv4 mtu determination to dst_mtu
X-Git-Tag: v3.11~4^2~9^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a25cf1e310888eb333f9e034be84a8117111d30;p=pandora-kernel.git

xfrm: revert ipv4 mtu determination to dst_mtu

In commit 0ea9d5e3e0e03a63b11392f5613378977dae7eca ("xfrm: introduce
helper for safe determination of mtu") I switched the determination of
ipv4 mtus from dst_mtu to ip_skb_dst_mtu. This was an error because in
case of IP_PMTUDISC_PROBE we fall back to the interface mtu, which is
never correct for ipv4 ipsec.

This patch partly reverts 0ea9d5e3e0e03a63b11392f5613378977dae7eca
("xfrm: introduce helper for safe determination of mtu").

Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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