netdev - Re: [PATCH net-next v2] net: filter: constify detection of pkt_type

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Message-ID: <CAHA+R7NgqNSkcffcOWr9t6OqjTvfnrLZJdicpwYY91EWNZxyZA@mail.gmail.com>
Date:	Fri, 12 Sep 2014 10:06:12 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Markos Chandras <markos.chandras@...tec.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Daniel Borkmann <dborkman@...hat.com>,
	Denis Kirjanov <kda@...ux-powerpc.org>
Subject: Re: [PATCH net-next v2] net: filter: constify detection of pkt_type_offset

On Fri, Sep 12, 2014 at 9:06 AM, Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
> On Fri, Sep 12, 2014 at 02:04:43PM +0200, Hannes Frederic Sowa wrote:
>> Currently we have 2 pkt_type_offset functions doing the same thing and
>> spread across the architecture files. Remove those and replace them
>> with a PKT_TYPE_OFFSET macro helper which gets the constant value from a
>> zero sized sk_buff member right in front of the bitfield with offsetof.
>> This new offset marker does not change size of struct sk_buff.
>>
>> Cc: Eric Dumazet <eric.dumazet@...il.com>
>> Cc: Markos Chandras <markos.chandras@...tec.com>
>> Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
>> Cc: Daniel Borkmann <dborkman@...hat.com>
>> Cc: Alexei Starovoitov <alexei.starovoitov@...il.com>
>> Signed-off-by: Denis Kirjanov <kda@...ux-powerpc.org>
>> Signed-off-by: Hannes Frederic Sowa <hannes@...essinduktion.org>
>> ---
>>
>> v2) Incorporated Daniel's feedback. I first misinterpreted the feedback
>>     as something not related to pkt_type_offset.
>
> Thanks! It's a nice cleanup.
>
> Acked-by: Alexei Starovoitov <ast@...mgrid.com>

Wait... Isn't there a same patch before?

http://www.spinics.net/lists/netdev/msg294839.html

Maybe not exactly the same, but roughly same from the stats....
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