linux-kernel - Re: [PATCH v9 net-next 2/4] net: filter: split filter.h and expose eBPF to user space

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Message-ID: <CAMEtUuws+AtOdwud8_YjXhs=yomt8nY+49f_UuhofcmhV58c1Q@mail.gmail.com>
Date:	Tue, 14 Oct 2014 01:43:17 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Daniel Borkmann <dborkman@...hat.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Steven Rostedt <rostedt@...dmis.org>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Chema Gonzalez <chema@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kees Cook <keescook@...omium.org>,
	Linux API <linux-api@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v9 net-next 2/4] net: filter: split filter.h and expose
 eBPF to user space

On Tue, Oct 14, 2014 at 12:34 AM, Daniel Borkmann <dborkman@...hat.com> wrote:
> On 10/13/2014 11:49 PM, Alexei Starovoitov wrote:
>>
>> On Mon, Oct 13, 2014 at 10:21 AM, Daniel Borkmann <dborkman@...hat.com>
>> wrote:
>>>
>>> On 09/03/2014 05:46 PM, Daniel Borkmann wrote:
>>> ...
>>>>
>>>>
>>>> Ok, given you post the remaining two RFCs later on this window as
>>>> you indicate, I have no objections:
>>>>
>>>> Acked-by: Daniel Borkmann <dborkman@...hat.com>
>>>
>>>
>>> Ping, Alexei, are you still sending the patch for bpf_common.h or
>>> do you want me to take care of this?
>>
>>
>> It's not forgotten.
>> I'm not sending it only because net-next is closed
>> and it seems to be -next material.
>
>
> Well, the point was since it's UAPI you're modifying, that it needs
> to be shipped before it first gets exposed to user land ...
>
> I think that should be reason enough ... there's no point in doing
> this at a later point in time.

Moving common #defines from filter.h into bpf_common.h can
be done at any point in time. For the sake of argument if
there is an app that includes both filter.h and bpf.h, it will
continue to work just fine.
Anyway, since you insist, I will send it now, though it definitely
can wait.
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