From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 23 Sep 2009 10:28:33 +0000 (+0000)
Subject: tunnel: eliminate recursion field
X-Git-Tag: v2.6.32-rc1~27^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a43912ab1925788765208da5cd664b6f8e011d08;p=pandora-kernel.git

tunnel: eliminate recursion field

It seems recursion field from "struct ip_tunnel" is not anymore needed.
recursion prevention is done at the upper level (in dev_queue_xmit()),
since we use HARD_TX_LOCK protection for tunnels.

This avoids a cache line ping pong on "struct ip_tunnel" : This structure
should be now mostly read on xmit and receive paths.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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