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From: KOVACS Krisztian <hidden@balabit.hu>
To: emmanuel@netlab.hut.fi
Cc: netfilter-devel@lists.netfilter.org
Subject: Re: How do I use ip_conntrack_destroyed?
Date: Wed, 03 Dec 2003 15:10:00 +0100	[thread overview]
Message-ID: <3FCDEEB8.8070603@balabit.hu> (raw)
In-Reply-To: <3FCDD197.6050700@netlab.hut.fi>


   Hi,

Emmanuel Guiton wrote:
> /* Call me when a conntrack is destroyed. */
> extern void (*ip_conntrack_destroyed)(struct ip_conntrack *conntrack);
> 
> So I guess it particularly fits with my needs. But what about using it?
> 
> Does it work so that I have to write something like:
> ip_conntrack_destroyed = &my_counter_function
> in my ipt_xxxx_target function and then do my stuff in my_counter_function?

   The ip_conntrack_destroyed function pointer is actually an ugly hack so 
that NAT is able to clean up when a conntrack entry is destroyed. So, 
changing that pointer is not allowed if you're using NAT.

   I think you'd need the functionality of ctnetlink's notifier 
registration facility. See POM/extra.

-- 
   Regards,
     Krisztian KOVACS

  reply	other threads:[~2003-12-03 14:10 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-03 12:05 How do I use ip_conntrack_destroyed? Emmanuel Guiton
2003-12-03 14:10 ` KOVACS Krisztian [this message]
2003-12-03 21:57 ` Henrik Nordstrom
2003-12-04  7:58   ` KOVACS Krisztian
2003-12-04 14:14     ` Emmanuel Guiton
2003-12-04 15:10       ` KOVACS Krisztian
2003-12-04 15:32         ` Emmanuel Guiton
2003-12-05 14:57         ` Emmanuel Guiton
2003-12-05 15:56           ` How do I use ip_conntrack_destroyed? [previous message erratum] Emmanuel Guiton
  -- strict thread matches above, loose matches on Subject: below --
2003-12-03 10:17 How do I use ip_conntrack_destroyed? Emmanuel Guiton

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