netdev - Re: [GIT] Networking

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Message-ID: <20866.53065.328731.479441@quad.stoffel.home>
Date:	Thu, 2 May 2013 16:40:41 -0400
From:	"John Stoffel" <john@...ffel.org>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	John Stoffel <john@...ffel.org>,
	David Miller <davem@...emloft.net>, <bjorn@...k.no>,
	<kaber@...sh.net>, <torvalds@...ux-foundation.org>,
	<hayeswang@...ltek.com>, <akpm@...ux-foundation.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [GIT] Networking

>>>>> "Ben" == Ben Hutchings <bhutchings@...arflare.com> writes:

Ben> On Thu, 2013-05-02 at 14:53 -0400, John Stoffel wrote:
>> >>>>> "David" == David Miller <davem@...emloft.net> writes:
>> 
David> From: Bjørn Mork <bjorn@...k.no>
David> Date: Thu, 02 May 2013 11:06:42 +0200
>> 
>> >> From d957cf339bf625869c39d852ac6733ef597ecef9 Mon Sep 17 00:00:00 2001
>> >> From: Bjørn Mork <bjorn@...k.no>
>> >> Date: Thu, 2 May 2013 10:37:05 +0200
>> >> Subject: [PATCH] net: vlan,ethtool: netdev_features_t is more than 32 bit
>> >> MIME-Version: 1.0
>> >> Content-Type: text/plain; charset=UTF-8
>> >> Content-Transfer-Encoding: 8bit
>> >> 
>> >> Signed-off-by: Bjørn Mork <bjorn@...k.no>
>> 
David> Also applied and queued up for -stable.
>> 
David> These changes show me that this special type isn't providing type
David> safety in the way that we actually need it.
>> 
David> Something like how we do the MM page table types would work better:
>> 
David> typedef struct { u64 val; } netdev_features_t;
>> 
David> #define __netdev_feature(X)	((netdev_features_t) { X } )
>> 
David> and also with the appropriate set of accessors.
>> 
David> Then you can't get it wrong without a compile error.
>> 
>> Isn't part of the problem that you're exporting it into /sys in a
>> binary format?
Ben> [...]

Ben> Features are exported through SIOCETHTOOL, not sysfs (though they *used*
Ben> to be there).

Ben> The 'flags' attribue in sysfs is something different.

THanks for the clarification.
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