From: Yi Zou <yi.zou@intel.com>
Date: Fri, 16 Mar 2012 23:08:11 +0000 (+0000)
Subject: net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso
X-Git-Tag: v3.4-rc1~177^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cdbee74ce74cd66de42a6f6d0edfa74fa9a66f2a;p=pandora-kernel.git

net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso

This is related to fixing the bug of dropping FCoE frames when disabling tx ip
checksum by 'ethtool -K ethx tx off'. The FCoE protocol stack driver would
use CHECKSUM_UNNECESSARY on tx path instead of CHECKSUM_PARTIAL (as indicated in
the 2/2 of this series). To do so, netif_needs_gso() has to be changed here to
not do gso for both CHECKSUM_PARTIAL and CHECKSUM_UNNECESSARY.

Ref. to original discussion thread:
http://patchwork.ozlabs.org/patch/146567/

Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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