netdev - Re: [resend] Passive OS fingerprint xtables match.

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Date:	Thu, 04 Jun 2009 15:16:17 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Evgeniy Polyakov <zbr@...emap.net>
CC:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>,
	Jan Engelhardt <jengelh@...ozas.de>
Subject: Re: [resend] Passive OS fingerprint xtables match.

Evgeniy Polyakov wrote:
> On Thu, Jun 04, 2009 at 02:11:24PM +0200, Patrick McHardy (kaber@...sh.net) wrote:
>> Thats not what I meant. struct xt_match_param is passed to the
>> ->match() callbacks from *t_do_table(). This is where you can
>> add the real hook number to have it available in ->match().
>>
>> (Forgot to mention earlier: please in a seperate patch and adjusting
>>  all *tables copies)
> 
> Kind of this (for ipv4 only so far, also reorderd a field to fill the
> gap):

Exactly. But please verify that by reordering, you're not moving
the more commonly used members out of the first cacheline.
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