netdev - Re: [PATCH net-2.6] ethtool: Compat handling for struct ethtool

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Date:	Fri, 18 Mar 2011 15:17:36 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	alexander.h.duyck@...el.com
Cc:	bhutchings@...arflare.com, netdev@...r.kernel.org,
	santwona.behera@....com
Subject: Re: [PATCH net-2.6] ethtool: Compat handling for struct
 ethtool_rxnfc

From: Alexander Duyck <alexander.h.duyck@...el.com>
Date: Fri, 18 Mar 2011 13:01:58 -0700

> On 3/17/2011 10:34 AM, Ben Hutchings wrote:
>> This structure was accidentally defined such that its layout can
>> differ between 32-bit and 64-bit processes.  Add compat structure
>> definitions and an ioctl wrapper function.
>>
>> Signed-off-by: Ben Hutchings<bhutchings@...arflare.com>
>> Cc: stable@...nel.org [2.6.30+]
>> ---
>> David,
>>
>> I still haven't received any response on whether the
>> ETHTOOL_GRXCLSRLALL
>> wrapping works with a real driver, but perhaps you could test it
>> against
>> niu?  I think sparc32 and sparc64 have the same alignment for u64 so
>> this wrapper isn't strictly necessary, but it would still be used.
>> (Or
>> we can arrange to disable the conversion when compat_ethtool_rxnfc is
>> equivalent to ethtool_rxnfc.)
>>
>> Ben.
> 
> I've done a bit of testing this morning and verified GRXRINGS,
> GRCLSRLCNT, GRXCLSRULE, SRXCLSRLDEL, and SRXCLSRLINS all seem to be
> working for 32bit and 64bit ethtool user space on a x86_64 kernel with
> the patch.  I also verified the original issue was present by running
> 32bit ethtool on a x86_64 kernel without the patch applied.
 ...
> Acked-by: Alexander Duyck <alexander.h.duyck@...el.com>

Applied, thanks.
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