From: Eric Dumazet <edumazet@google.com>
Date: Wed, 25 Jul 2012 05:11:23 +0000 (+0000)
Subject: ipv4: rt_cache_valid must check expired routes
X-Git-Tag: v3.6-rc1~78^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4331debc51ee1ce319f4a389484e0e8e05de2aca;p=pandora-kernel.git

ipv4: rt_cache_valid must check expired routes

commit d2d68ba9fe8 (ipv4: Cache input routes in fib_info nexthops.)
introduced rt_cache_valid() helper. It unfortunately doesn't check if
route is expired before caching it.

I noticed sk_setup_caps() was constantly called on a tcp workload.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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