From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Kling <thomasmkling@yahoo.de>
Subject: how get tcp_conntrack?
Date: Mon, 16 May 2005 18:33:41 +0200
Message-ID: <371529952.20050516183341@yahoo.de>
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Hello,

I put his question to netfilter-devel, but did get no reply. I'm just
wondering if my problem is too trivial or impossible with iptables,
here it is:


I want to write an extended logging of TCP-Connections: iptables -A INPUT -j LOGTCP

LOGTCP should just be a copy of ipt_LOG.c: 

/* --------copy------------
static void dump_packet(const struct ipt_log_info *info, const struct sk_buff *skb, unsigned int iphoff)
{
...
case IPPROTO_TCP: {
struct tcphdr _tcph, *th;
 
/* Max length: 10 "PROTO=TCP " */
printk("PROTO=TCP ");
... 
[*]
...
break;
--------copy------------ /*

And here [*] I want to call some functions from tcp_conntrack:
printk("tcp_in_window, sender->td_end, sender->td_maxend, sender->maxwin, receiver->td_end, receiver->td_maxend, receiver->td_maxwin);

The problem: I just don't know how to access these values from there.
ip_conntrack_get gives me a pointer to nowhere. I looked through
several other modules, but didn't find the idea to get started.