From: Michal Schmidt <mschmidt@redhat.com>
Date: Thu, 13 Sep 2012 12:59:44 +0000 (+0000)
Subject: bnx2x: fix rx checksum validation for IPv6
X-Git-Tag: v3.2.31~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abf9fdb3f9e0b78df8145e0d742d0a19f251910b;p=pandora-kernel.git

bnx2x: fix rx checksum validation for IPv6

[ Upstream commit e488921f44765e8ab6c48ca35e3f6b78df9819df ]

Commit d6cb3e41 "bnx2x: fix checksum validation" caused a performance
regression for IPv6. Rx checksum offload does not work. IPv6 packets
are passed to the stack with CHECKSUM_NONE.

The hardware obviously cannot perform IP checksum validation for IPv6,
because there is no checksum in the IPv6 header. This should not prevent
us from setting CHECKSUM_UNNECESSARY.

Tested on BCM57711.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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