From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 28 Apr 2015 03:43:15 +0000 (+0800)
Subject: route: Use ipv4_mtu instead of raw rt_pmtu
X-Git-Tag: omap-for-v4.2/omap1-v2~42^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb6ccf09d6b94bec4def1ac5cf4678d12b216474;p=pandora-kernel.git

route: Use ipv4_mtu instead of raw rt_pmtu

The commit 3cdaa5be9e81a914e633a6be7b7d2ef75b528562 ("ipv4: Don't
increase PMTU with Datagram Too Big message") broke PMTU in cases
where the rt_pmtu value has expired but is smaller than the new
PMTU value.

This obsolete rt_pmtu then prevents the new PMTU value from being
installed.

Fixes: 3cdaa5be9e81 ("ipv4: Don't increase PMTU with Datagram Too Big message")
Reported-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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