From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Mon, 8 Oct 2012 00:56:54 +0000 (+0000)
Subject: ipv4: Don't report stale pmtu values to userspace
X-Git-Tag: v3.7-rc1~66^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee9a8f7ab2edf801b8b514c310455c94acc232f6;p=pandora-kernel.git

ipv4: Don't report stale pmtu values to userspace

We report cached pmtu values even if they are already expired.
Change this to not report these values after they are expired
and fix a race in the expire time calculation, as suggested by
Eric Dumazet.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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