From: Eric Dumazet <edumazet@google.com>
Date: Thu, 27 Sep 2012 02:14:53 +0000 (+0000)
Subject: tcp: gro: add checksuming helpers
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~47^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=861b650101eb0c627d171eb18de81dddb93d395e;p=pandora-kernel.git

tcp: gro: add checksuming helpers

skb with CHECKSUM_NONE cant currently be handled by GRO, and
we notice this deep in GRO stack in tcp[46]_gro_receive()

But there are cases where GRO can be a benefit, even with a lack
of checksums.

This preliminary work is needed to add GRO support
to tunnels.

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