[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / netfilter / nf_conntrack_l3proto_generic.c

/*
 * (C) 2003,2004 USAGI/WIDE Project <http://www.linux-ipv6.org>
 *
 * Based largely upon the original ip_conntrack code which
 * had the following copyright information:
 *
 * (C) 1999-2001 Paul `Rusty' Russell
 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
 *
 * 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.
 *
 * Author:
 *	Yasuyuki Kozakai @USAGI	<yasuyuki.kozakai@toshiba.co.jp>
 */

#include <linux/types.h>
#include <linux/ip.h>
#include <linux/netfilter.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/icmp.h>
#include <linux/sysctl.h>
#include <net/ip.h>

#include <linux/netfilter_ipv4.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>

static bool generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
				 struct nf_conntrack_tuple *tuple)
{
	memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
	memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));

	return true;
}

static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
				 const struct nf_conntrack_tuple *orig)
{
	memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
	memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));

	return true;
}

static int generic_print_tuple(struct seq_file *s,
			    const struct nf_conntrack_tuple *tuple)
{
	return 0;
}

static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
			       unsigned int *dataoff, u_int8_t *protonum)
{
	/* Never track !!! */
	return -NF_ACCEPT;
}


struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = {
	.l3proto	 = PF_UNSPEC,
	.name		 = "unknown",
	.pkt_to_tuple	 = generic_pkt_to_tuple,
	.invert_tuple	 = generic_invert_tuple,
	.print_tuple	 = generic_print_tuple,
	.get_l4proto	 = generic_get_l4proto,
};
EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic);
Commit	Line	Data
9fb9cbb1 YK	1	/*
	2	* (C) 2003,2004 USAGI/WIDE Project <http://www.linux-ipv6.org>
	3	*
	4	* Based largely upon the original ip_conntrack code which
	5	* had the following copyright information:
	6	*
	7	* (C) 1999-2001 Paul `Rusty' Russell
	8	* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*
	14	* Author:
	15	* Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
	16	*/
	17
9fb9cbb1 YK	18	#include <linux/types.h>
	19	#include <linux/ip.h>
	20	#include <linux/netfilter.h>
	21	#include <linux/module.h>
	22	#include <linux/skbuff.h>
	23	#include <linux/icmp.h>
	24	#include <linux/sysctl.h>
	25	#include <net/ip.h>
	26
	27	#include <linux/netfilter_ipv4.h>
	28	#include <net/netfilter/nf_conntrack.h>
605dcad6	29	#include <net/netfilter/nf_conntrack_l4proto.h>
9fb9cbb1 YK	30	#include <net/netfilter/nf_conntrack_l3proto.h>
	31	#include <net/netfilter/nf_conntrack_core.h>
	32	#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
	33
8ce8439a JE	34	static bool generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
8ce8439a JE	35	struct nf_conntrack_tuple *tuple)
9fb9cbb1 YK	36	{
	37	memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
	38	memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));
	39
8ce8439a	40	return true;
9fb9cbb1 YK	41	}
9fb9cbb1 YK	42
8ce8439a JE	43	static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
8ce8439a JE	44	const struct nf_conntrack_tuple *orig)
9fb9cbb1 YK	45	{
	46	memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
	47	memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));
	48
8ce8439a	49	return true;
9fb9cbb1 YK	50	}
	51
	52	static int generic_print_tuple(struct seq_file *s,
	53	const struct nf_conntrack_tuple *tuple)
	54	{
	55	return 0;
	56	}
	57
ffc30690 YK	58	static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
ffc30690 YK	59	unsigned int dataoff, u_int8_t protonum)
9fb9cbb1 YK	60	{
	61	/* Never track !!! */
	62	return -NF_ACCEPT;
	63	}
	64
	65
61075af5	66	struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = {
9fb9cbb1 YK	67	.l3proto = PF_UNSPEC,
	68	.name = "unknown",
	69	.pkt_to_tuple = generic_pkt_to_tuple,
	70	.invert_tuple = generic_invert_tuple,
	71	.print_tuple = generic_print_tuple,
ffc30690	72	.get_l4proto = generic_get_l4proto,
9fb9cbb1	73	};
e4bd8bce	74	EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic);