[linux-2.6-block.git] / net / netfilter / xt_MARK.c

/*
 *	xt_MARK - Netfilter module to modify the NFMARK field of an skb
 *
 *	(C) 1999-2001 Marc Boucher <marc@mbsi.ca>
 *	Copyright © CC Computer Consultants GmbH, 2007 - 2008
 *	Jan Engelhardt <jengelh@computergmbh.de>
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License version 2 as
 *	published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <net/checksum.h>

#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_MARK.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
MODULE_DESCRIPTION("Xtables: packet mark modification");
MODULE_ALIAS("ipt_MARK");
MODULE_ALIAS("ip6t_MARK");

static unsigned int
mark_tg(struct sk_buff *skb, const struct xt_target_param *par)
{
	const struct xt_mark_tginfo2 *info = par->targinfo;

	skb->mark = (skb->mark & ~info->mask) ^ info->mark;
	return XT_CONTINUE;
}

static struct xt_target mark_tg_reg __read_mostly = {
	.name           = "MARK",
	.revision       = 2,
	.family         = NFPROTO_UNSPEC,
	.target         = mark_tg,
	.targetsize     = sizeof(struct xt_mark_tginfo2),
	.me             = THIS_MODULE,
};

static int __init mark_tg_init(void)
{
	return xt_register_target(&mark_tg_reg);
}

static void __exit mark_tg_exit(void)
{
	xt_unregister_target(&mark_tg_reg);
}

module_init(mark_tg_init);
module_exit(mark_tg_exit);
Commit	Line	Data
e0a812ae JE	1	/*
	2	* xt_MARK - Netfilter module to modify the NFMARK field of an skb
	3	*
	4	* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
	5	* Copyright © CC Computer Consultants GmbH, 2007 - 2008
	6	* Jan Engelhardt <jengelh@computergmbh.de>
1da177e4	7	*
e0a812ae JE	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
1da177e4 LT	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/skbuff.h>
	15	#include <linux/ip.h>
	16	#include <net/checksum.h>
	17
2e4e6a17 HW	18	#include <linux/netfilter/x_tables.h>
2e4e6a17 HW	19	#include <linux/netfilter/xt_MARK.h>
1da177e4 LT	20
	21	MODULE_LICENSE("GPL");
	22	MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
2ae15b64	23	MODULE_DESCRIPTION("Xtables: packet mark modification");
2e4e6a17 HW	24	MODULE_ALIAS("ipt_MARK");
2e4e6a17 HW	25	MODULE_ALIAS("ip6t_MARK");
1da177e4	26
e0a812ae	27	static unsigned int
7eb35586	28	mark_tg(struct sk_buff skb, const struct xt_target_param par)
e0a812ae	29	{
7eb35586	30	const struct xt_mark_tginfo2 *info = par->targinfo;
e0a812ae JE	31
	32	skb->mark = (skb->mark & ~info->mask) ^ info->mark;
	33	return XT_CONTINUE;
	34	}
	35
c8001f7f JE	36	static struct xt_target mark_tg_reg __read_mostly = {
	37	.name = "MARK",
	38	.revision = 2,
	39	.family = NFPROTO_UNSPEC,
	40	.target = mark_tg,
	41	.targetsize = sizeof(struct xt_mark_tginfo2),
	42	.me = THIS_MODULE,
2e4e6a17 HW	43	};
2e4e6a17 HW	44
d3c5ee6d	45	static int __init mark_tg_init(void)
1da177e4	46	{
c8001f7f	47	return xt_register_target(&mark_tg_reg);
1da177e4 LT	48	}
1da177e4 LT	49
d3c5ee6d	50	static void __exit mark_tg_exit(void)
1da177e4	51	{
c8001f7f	52	xt_unregister_target(&mark_tg_reg);
1da177e4 LT	53	}
1da177e4 LT	54
d3c5ee6d JE	55	module_init(mark_tg_init);
d3c5ee6d JE	56	module_exit(mark_tg_exit);