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List:       netfilter-devel
Subject:    Re: [Fwd: Netfilter Hacking]
From:       Harald Welte <laforge () gnumonks ! org>
Date:       2001-05-25 18:40:17
[Download RAW message or body]

On Fri, May 25, 2001 at 11:39:08AM +0200, Julien Laganier wrote:
> 
> And the hook function is a nf_hookfn, which is a typedef :
> 
> typedef unsigned int nf_hookfn(unsigned int hooknum,
> 			       struct sk_buff **skb,
> 			       const struct net_device *in,
> 			       const struct net_device *out,
> 			       int (*okfn)(struct sk_buff *));
> 
> What is the parameter int (*okfn)(struct sk_buff *) which is passed to
> the hook ?

it is the function where the program continues after the hook was 
sucessfully (i.e. NF_ACCEPT) executed. Look for the various examples
in /usr/src/linux/net/ipv4

-- 
Live long and prosper
- Harald Welte / laforge@gnumonks.org                http://www.gnumonks.org
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