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Date:	Fri, 12 Sep 2014 19:09:48 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Cong Wang <cwang@...pensource.com>
Cc:	Alexei Starovoitov <alexei.starovoitov@...il.com>,
	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 Fr, 2014-09-12 at 10:06 -0700, Cong Wang wrote:
> 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....

Sure, he asked me to send it and I included his signed-off. I think I
did that correctly?

Bye,
Hannes


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