netdev - Re: [PATCH] netfilter: Fix compiler warning.

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Date:	Thu, 10 Dec 2009 20:31:52 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jan Engelhardt <jengelh@...ozas.de>
CC:	Laurent Chavey <chavey@...gle.com>, davem@...emloft.net,
	netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>,
	Netfilter Developers <netfilter-devel@...r.kernel.org>
Subject: Re: [PATCH] netfilter: Fix compiler warning.

Le 10/12/2009 19:53, Jan Engelhardt a écrit :
> 
> On Donnerstag 2009-12-10 18:50, Laurent Chavey wrote:
>>
>> good point.  I  agree with the need for the exception, I would just
>> like it to be more explicit in the code itself (like a turn off
>> check around that particular statement) so we do not have to scrub
>> thru the compiler output to filter out good / bad warning. question:
>>  why do we not force the timestamp in the skb before going thru the
>> chain ?
> 
> Because it is probably too expensive to do, unless you employ
> things like xt_time?

Right. On some platforms, timestamps are quite expensive (say, a fraction 
of one micro second to get one of them), we try to avoid them as much as possible.
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