From: Tom Herbert <therbert@google.com>
Date: Thu, 2 Jan 2014 19:48:26 +0000 (-0800)
Subject: ipv4: Cache dst in tunnels
X-Git-Tag: v3.14-rc1~94^2~308^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d442fab0a6777fd7612cfcada32ea859553d370;p=pandora-kernel.git

ipv4: Cache dst in tunnels

Avoid doing a route lookup on every packet being tunneled.

In ip_tunnel.c cache the route returned from ip_route_output if
the tunnel is "connected" so that all the rouitng parameters are
taken from tunnel parms for a packet. Specifically, not NBMA tunnel
and tos is from tunnel parms (not inner packet).

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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