netdev - Re: Atheros Communications Inc. AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0) 1.0.0.7 md5/sha1 corrupted using NFS and samba (updated) Version 2

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Message-ID: <20130324034037.GC17948@order.stressinduktion.org>
Date:	Sun, 24 Mar 2013 04:40:37 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	"Huang, Xiong" <xiong@....qualcomm.com>
Cc:	Sven Hartge <sven@...nhartge.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Atheros Communications Inc. AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0) 1.0.0.7 md5/sha1 corrupted using NFS and samba (updated) Version 2

On Sun, Mar 24, 2013 at 03:27:55AM +0000, Huang, Xiong wrote:
> Could you point me where the patch is ? 
> I checked windows driver, it doesn't disable checksum offload in RX direction.


The patch is here: <http://article.gmane.org/gmane.linux.network/263116>

It does not disable checksum offloading but rather suppress the update of the
ip_summed field. This forces the kernel to recheck the checksums and discard
the packet. Otherwise it would be seen as a valid one and could corrupt data
streams.

Thanks,

  Hannes

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