Re: [net 3/3] fcoe: use CHECKSUM_UNNECESSARY instead of CHECKSUM_PARTIAL on tx

From: Jeff Kirsher <redacted>
Date: Sat, 17 Mar 2012 02:08:12 -0700

From: Yi Zou <redacted>

Fix a bug when using 'ethtool -K ethx tx off' to turn off tx ip checksum,
FCoE CRC offload should not be impacte. The skb_checksum_help() is needed
only if it's not FCoE traffic for ip checksum, regardless of ethtool toggling
the tx ip checksum on or off. Instead of using CHECKSUM_PARTIAL, we will
use CHECKSUM_UNNECESSARY as a proper indication to avoid sw ip checksum
on FCoE frames.

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

CC: "James E.J. Bottomley" <redacted>
CC: Robert Love <redacted>
Signed-off-by: Yi Zou <redacted>
Tested-by: Ross Brattain <redacted>
Signed-off-by: Jeff Kirsher <redacted>

Applied.