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Date:	Tue, 19 Oct 2010 16:25:24 +0200 (CEST)
From:	Jesper Dangaard Brouer <>
To:	Netfilter Developers <>
Cc:, Eric Dumazet <>,
	netdev <>
Subject: [RFC 1/3] MPEG2/TS drop analyzer file: xt_mp2t.h

  * Header file for MPEG2 TS match extension "mp2t" for Xtables.
  * Copyright (c) Jesper Dangaard Brouer <>, 2009+
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License; either
  * version 2 of the License, or any later version, as published by the
  * Free Software Foundation.

#define XT_MODULE_NAME		"xt_mp2t"
#define XT_MODULE_VERSION	"0.2.1-devel"
#define XT_MODULE_RELDATE	"Sep 15, 2010"
#define PFX			XT_MODULE_NAME ": "

static char version[] =

enum {
 	XT_MP2T_DETECT_DROP = 1 << 0,
 	XT_MP2T_MAX_STREAMS = 1 << 1,
 	XT_MP2T_PARAM_NAME  = 1 << 2,

/* Details of this hash structure is hidden in kernel space xt_mp2t.c */
struct xt_rule_mp2t_conn_htable;

struct mp2t_cfg {

 	/* Hash table setup */
 	u_int32_t size;		/* how many hash buckets */
 	u_int32_t max;		/* max number of entries */
 	u_int32_t max_list;	/* warn if list searches exceed this number */

struct xt_mp2t_mtinfo {
 	__u16 flags;

 	/* FIXME:

 	   I need to fix the problem, where I have to reallocated data
 	   each time a single rule change occur.

 	   The idea with rule_name and rule_id is that the name is
 	   optional, simply to provide a name in /proc/, the rule_id
 	   is the real lookup-key in the internal kernel list of the
 	   rules associated dynamic-allocated-data.

 	char rule_name[IFNAMSIZ];

 	struct mp2t_cfg cfg;

 	/** Below used internally by the kernel **/
 	__u32 rule_id;

 	/* Hash table pointer */
 	struct xt_rule_mp2t_conn_htable *hinfo __attribute__((aligned(8)));

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