netdev - [PATCH] forcedeth: fix checksum flag

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Message-ID: <48A4B665.5020802@nvidia.com>
Date:	Thu, 14 Aug 2008 18:49:09 -0400
From:	Ayaz Abdulla <aabdulla@...dia.com>
To:	Jeff Garzik <jgarzik@...ox.com>,
	Manfred Spraul <manfred@...orfullife.com>,
	Andrew Morton <akpm@...l.org>, nedev <netdev@...r.kernel.org>
Subject: [PATCH] forcedeth: fix checksum flag

This patch fixes the checksum feature advertised in device flags. The 
hardware support TCP/UDP over IPv4 and TCP/UDP over IPv6 (without IPv6 
extension headers). However, the kernel feature flags do not distinguish 
  IPv6 with/without extension headers.

Therefore, the driver needs to use NETIF_F_IP_CSUM instead of 
NETIF_F_HW_CSUM since the latter includes all IPv6 packets.

A future patch can created to check for extension headers and perform 
software checksum calculation.

Signed-off-by: Ayaz Abdulla <aabdulla@...dia.com>

View attachment "patch-forcedeth-ipv4csum" of type "text/plain" (780 bytes)