From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH linux-2.6.12-rc4-mm1] ethtool: Add NETIF_F_HW_CSUM
 support
Date: Mon, 23 May 2005 14:20:09 -0700 (PDT)
Message-ID: <20050523.142009.74748115.davem@davemloft.net>
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From: Jon Mason <jdmason@us.ibm.com>
Subject: [PATCH linux-2.6.12-rc4-mm1] ethtool: Add NETIF_F_HW_CSUM support
Date: Mon, 23 May 2005 16:07:57 -0500

> Added support to ethtool for NETIF_F_HW_CSUM.
> 
> Signed-off-by: Jon Mason <jdmason@us.ibm.com>

You cannot blindly set these flags, you need to provide
a method for the driver to override the implementation of
this method so it can return and error if it cannot provide
support for this feature.