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net: update the usage of CHECKSUM_UNNECESSARY

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As suggested by Ben, this adds the clarification on the usage of
CHECKSUM_UNNECESSARY on the outgoing patch. Also add the usage
description of NETIF_F_FCOE_CRC and CHECKSUM_UNNECESSARY
for the kernel FCoE protocol driver.

This is a follow-up to the following:
http://patchwork.ozlabs.org/patch/147315/

Signed-off-by: Yi Zou <yi.zou@intel.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: www.Open-FCoE.org <devel@open-fcoe.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yi Zou
2012-03-19 11:12:41 +00:00
committed by David S. Miller
parent cf64bc8f09
commit 3af79302b4
1 changed files with 7 additions and 0 deletions
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7
include/linux/skbuff.h
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@@ -94,6 +94,13 @@
* about CHECKSUM_UNNECESSARY. 8) * about CHECKSUM_UNNECESSARY. 8)
* NETIF_F_IPV6_CSUM about as dumb as the last one but does IPv6 instead. * NETIF_F_IPV6_CSUM about as dumb as the last one but does IPv6 instead.
* *
* UNNECESSARY: device will do per protocol specific csum. Protocol drivers
* that do not want net to perform the checksum calculation should use
* this flag in their outgoing skbs.
* NETIF_F_FCOE_CRC this indicates the device can do FCoE FC CRC
* offload. Correspondingly, the FCoE protocol driver
* stack should use CHECKSUM_UNNECESSARY.
*
* Any questions? No questions, good. --ANK * Any questions? No questions, good. --ANK
*/ */