[linux-2.6-block.git] / net / sched / act_ipt.c

/*
 * net/sched/ipt.c	iptables target interface
 *
 *TODO: Add other tables. For now we only support the ipv4 table targets
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 * Copyright:	Jamal Hadi Salim (2002-4)
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <linux/module.h>
#include <linux/init.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <linux/tc_act/tc_ipt.h>
#include <net/tc_act/tc_ipt.h>

#include <linux/netfilter_ipv4/ip_tables.h>


#define IPT_TAB_MASK     15
static struct tcf_common *tcf_ipt_ht[IPT_TAB_MASK + 1];
static u32 ipt_idx_gen;
static DEFINE_RWLOCK(ipt_lock);

static struct tcf_hashinfo ipt_hash_info = {
	.htab	=	tcf_ipt_ht,
	.hmask	=	IPT_TAB_MASK,
	.lock	=	&ipt_lock,
};

static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int hook)
{
	struct xt_target *target;
	int ret = 0;

	target = xt_request_find_target(AF_INET, t->u.user.name,
					t->u.user.revision);
	if (!target)
		return -ENOENT;

	t->u.kernel.target = target;

	ret = xt_check_target(target, AF_INET, t->u.target_size - sizeof(*t),
			      table, hook, 0, 0, NULL, t->data);
	if (ret < 0) {
		module_put(t->u.kernel.target->me);
		return ret;
	}
	return 0;
}

static void ipt_destroy_target(struct ipt_entry_target *t)
{
	if (t->u.kernel.target->destroy)
		t->u.kernel.target->destroy(t->u.kernel.target, t->data);
	module_put(t->u.kernel.target->me);
}

static int tcf_ipt_release(struct tcf_ipt *ipt, int bind)
{
	int ret = 0;
	if (ipt) {
		if (bind)
			ipt->tcf_bindcnt--;
		ipt->tcf_refcnt--;
		if (ipt->tcf_bindcnt <= 0 && ipt->tcf_refcnt <= 0) {
			ipt_destroy_target(ipt->tcfi_t);
			kfree(ipt->tcfi_tname);
			kfree(ipt->tcfi_t);
			tcf_hash_destroy(&ipt->common, &ipt_hash_info);
			ret = ACT_P_DELETED;
		}
	}
	return ret;
}

static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = {
	[TCA_IPT_TABLE]	= { .type = NLA_STRING, .len = IFNAMSIZ },
	[TCA_IPT_HOOK]	= { .type = NLA_U32 },
	[TCA_IPT_INDEX]	= { .type = NLA_U32 },
	[TCA_IPT_TARG]	= { .len = sizeof(struct ipt_entry_target) },
};

static int tcf_ipt_init(struct nlattr *nla, struct nlattr *est,
			struct tc_action *a, int ovr, int bind)
{
	struct nlattr *tb[TCA_IPT_MAX + 1];
	struct tcf_ipt *ipt;
	struct tcf_common *pc;
	struct ipt_entry_target *td, *t;
	char *tname;
	int ret = 0, err;
	u32 hook = 0;
	u32 index = 0;

	if (nla == NULL)
		return -EINVAL;

	err = nla_parse_nested(tb, TCA_IPT_MAX, nla, ipt_policy);
	if (err < 0)
		return err;

	if (tb[TCA_IPT_HOOK] == NULL)
		return -EINVAL;
	if (tb[TCA_IPT_TARG] == NULL)
		return -EINVAL;

	td = (struct ipt_entry_target *)nla_data(tb[TCA_IPT_TARG]);
	if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size)
		return -EINVAL;

	if (tb[TCA_IPT_INDEX] != NULL)
		index = nla_get_u32(tb[TCA_IPT_INDEX]);

	pc = tcf_hash_check(index, a, bind, &ipt_hash_info);
	if (!pc) {
		pc = tcf_hash_create(index, est, a, sizeof(*ipt), bind,
				     &ipt_idx_gen, &ipt_hash_info);
		if (unlikely(!pc))
			return -ENOMEM;
		ret = ACT_P_CREATED;
	} else {
		if (!ovr) {
			tcf_ipt_release(to_ipt(pc), bind);
			return -EEXIST;
		}
	}
	ipt = to_ipt(pc);

	hook = nla_get_u32(tb[TCA_IPT_HOOK]);

	err = -ENOMEM;
	tname = kmalloc(IFNAMSIZ, GFP_KERNEL);
	if (unlikely(!tname))
		goto err1;
	if (tb[TCA_IPT_TABLE] == NULL ||
	    nla_strlcpy(tname, tb[TCA_IPT_TABLE], IFNAMSIZ) >= IFNAMSIZ)
		strcpy(tname, "mangle");

	t = kmemdup(td, td->u.target_size, GFP_KERNEL);
	if (unlikely(!t))
		goto err2;

	if ((err = ipt_init_target(t, tname, hook)) < 0)
		goto err3;

	spin_lock_bh(&ipt->tcf_lock);
	if (ret != ACT_P_CREATED) {
		ipt_destroy_target(ipt->tcfi_t);
		kfree(ipt->tcfi_tname);
		kfree(ipt->tcfi_t);
	}
	ipt->tcfi_tname = tname;
	ipt->tcfi_t     = t;
	ipt->tcfi_hook  = hook;
	spin_unlock_bh(&ipt->tcf_lock);
	if (ret == ACT_P_CREATED)
		tcf_hash_insert(pc, &ipt_hash_info);
	return ret;

err3:
	kfree(t);
err2:
	kfree(tname);
err1:
	kfree(pc);
	return err;
}

static int tcf_ipt_cleanup(struct tc_action *a, int bind)
{
	struct tcf_ipt *ipt = a->priv;
	return tcf_ipt_release(ipt, bind);
}

static int tcf_ipt(struct sk_buff *skb, struct tc_action *a,
		   struct tcf_result *res)
{
	int ret = 0, result = 0;
	struct tcf_ipt *ipt = a->priv;

	if (skb_cloned(skb)) {
		if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
			return TC_ACT_UNSPEC;
	}

	spin_lock(&ipt->tcf_lock);

	ipt->tcf_tm.lastuse = jiffies;
	ipt->tcf_bstats.bytes += qdisc_pkt_len(skb);
	ipt->tcf_bstats.packets++;

	/* yes, we have to worry about both in and out dev
	 worry later - danger - this API seems to have changed
	 from earlier kernels */
	ret = ipt->tcfi_t->u.kernel.target->target(skb, skb->dev, NULL,
						   ipt->tcfi_hook,
						   ipt->tcfi_t->u.kernel.target,
						   ipt->tcfi_t->data);
	switch (ret) {
	case NF_ACCEPT:
		result = TC_ACT_OK;
		break;
	case NF_DROP:
		result = TC_ACT_SHOT;
		ipt->tcf_qstats.drops++;
		break;
	case IPT_CONTINUE:
		result = TC_ACT_PIPE;
		break;
	default:
		if (net_ratelimit())
			printk("Bogus netfilter code %d assume ACCEPT\n", ret);
		result = TC_POLICE_OK;
		break;
	}
	spin_unlock(&ipt->tcf_lock);
	return result;

}

static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_ipt *ipt = a->priv;
	struct ipt_entry_target *t;
	struct tcf_t tm;
	struct tc_cnt c;

	/* for simple targets kernel size == user size
	** user name = target name
	** for foolproof you need to not assume this
	*/

	t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC);
	if (unlikely(!t))
		goto nla_put_failure;

	c.bindcnt = ipt->tcf_bindcnt - bind;
	c.refcnt = ipt->tcf_refcnt - ref;
	strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);

	NLA_PUT(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t);
	NLA_PUT_U32(skb, TCA_IPT_INDEX, ipt->tcf_index);
	NLA_PUT_U32(skb, TCA_IPT_HOOK, ipt->tcfi_hook);
	NLA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c);
	NLA_PUT_STRING(skb, TCA_IPT_TABLE, ipt->tcfi_tname);
	tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install);
	tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse);
	tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires);
	NLA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm);
	kfree(t);
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	kfree(t);
	return -1;
}

static struct tc_action_ops act_ipt_ops = {
	.kind		=	"ipt",
	.hinfo		=	&ipt_hash_info,
	.type		=	TCA_ACT_IPT,
	.capab		=	TCA_CAP_NONE,
	.owner		=	THIS_MODULE,
	.act		=	tcf_ipt,
	.dump		=	tcf_ipt_dump,
	.cleanup	=	tcf_ipt_cleanup,
	.lookup		=	tcf_hash_search,
	.init		=	tcf_ipt_init,
	.walk		=	tcf_generic_walker
};

MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
MODULE_DESCRIPTION("Iptables target actions");
MODULE_LICENSE("GPL");

static int __init ipt_init_module(void)
{
	return tcf_register_action(&act_ipt_ops);
}

static void __exit ipt_cleanup_module(void)
{
	tcf_unregister_action(&act_ipt_ops);
}

module_init(ipt_init_module);
module_exit(ipt_cleanup_module);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* net/sched/ipt.c iptables target interface
	3	*
	4	*TODO: Add other tables. For now we only support the ipv4 table targets
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*
	11	* Copyright: Jamal Hadi Salim (2002-4)
	12	*/
	13
1da177e4 LT	14	#include <linux/types.h>
1da177e4 LT	15	#include <linux/kernel.h>
1da177e4	16	#include <linux/string.h>
1da177e4	17	#include <linux/errno.h>
1da177e4 LT	18	#include <linux/skbuff.h>
	19	#include <linux/rtnetlink.h>
	20	#include <linux/module.h>
	21	#include <linux/init.h>
dc5fc579	22	#include <net/netlink.h>
1da177e4 LT	23	#include <net/pkt_sched.h>
	24	#include <linux/tc_act/tc_ipt.h>
	25	#include <net/tc_act/tc_ipt.h>
	26
	27	#include <linux/netfilter_ipv4/ip_tables.h>
	28
1da177e4	29
e9ce1cd3 DM	30	#define IPT_TAB_MASK 15
	31	static struct tcf_common *tcf_ipt_ht[IPT_TAB_MASK + 1];
	32	static u32 ipt_idx_gen;
1da177e4 LT	33	static DEFINE_RWLOCK(ipt_lock);
1da177e4 LT	34
e9ce1cd3 DM	35	static struct tcf_hashinfo ipt_hash_info = {
	36	.htab = tcf_ipt_ht,
	37	.hmask = IPT_TAB_MASK,
	38	.lock = &ipt_lock,
	39	};
1da177e4	40
e9ce1cd3	41	static int ipt_init_target(struct ipt_entry_target t, char table, unsigned int hook)
1da177e4	42	{
e60a13e0	43	struct xt_target *target;
1da177e4 LT	44	int ret = 0;
1da177e4 LT	45
239a87c8 PM	46	target = xt_request_find_target(AF_INET, t->u.user.name,
239a87c8 PM	47	t->u.user.revision);
1da177e4 LT	48	if (!target)
	49	return -ENOENT;
	50
1da177e4 LT	51	t->u.kernel.target = target;
1da177e4 LT	52
18118cdb	53	ret = xt_check_target(target, AF_INET, t->u.target_size - sizeof(*t),
367c6790 JE	54	table, hook, 0, 0, NULL, t->data);
367c6790 JE	55	if (ret < 0) {
239a87c8	56	module_put(t->u.kernel.target->me);
18118cdb	57	return ret;
239a87c8	58	}
367c6790	59	return 0;
1da177e4 LT	60	}
1da177e4 LT	61
e9ce1cd3	62	static void ipt_destroy_target(struct ipt_entry_target *t)
1da177e4 LT	63	{
1da177e4 LT	64	if (t->u.kernel.target->destroy)
efa74165	65	t->u.kernel.target->destroy(t->u.kernel.target, t->data);
10297b99	66	module_put(t->u.kernel.target->me);
1da177e4 LT	67	}
1da177e4 LT	68
e9ce1cd3	69	static int tcf_ipt_release(struct tcf_ipt *ipt, int bind)
1da177e4 LT	70	{
1da177e4 LT	71	int ret = 0;
e9ce1cd3	72	if (ipt) {
1da177e4	73	if (bind)
e9ce1cd3 DM	74	ipt->tcf_bindcnt--;
	75	ipt->tcf_refcnt--;
	76	if (ipt->tcf_bindcnt <= 0 && ipt->tcf_refcnt <= 0) {
	77	ipt_destroy_target(ipt->tcfi_t);
	78	kfree(ipt->tcfi_tname);
	79	kfree(ipt->tcfi_t);
	80	tcf_hash_destroy(&ipt->common, &ipt_hash_info);
1da177e4 LT	81	ret = ACT_P_DELETED;
	82	}
	83	}
	84	return ret;
	85	}
	86
53b2bf3f PM	87	static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = {
	88	[TCA_IPT_TABLE] = { .type = NLA_STRING, .len = IFNAMSIZ },
	89	[TCA_IPT_HOOK] = { .type = NLA_U32 },
	90	[TCA_IPT_INDEX] = { .type = NLA_U32 },
	91	[TCA_IPT_TARG] = { .len = sizeof(struct ipt_entry_target) },
	92	};
	93
7ba699c6	94	static int tcf_ipt_init(struct nlattr nla, struct nlattr est,
e9ce1cd3	95	struct tc_action *a, int ovr, int bind)
1da177e4	96	{
7ba699c6	97	struct nlattr *tb[TCA_IPT_MAX + 1];
e9ce1cd3 DM	98	struct tcf_ipt *ipt;
e9ce1cd3 DM	99	struct tcf_common *pc;
1da177e4 LT	100	struct ipt_entry_target td, t;
	101	char *tname;
	102	int ret = 0, err;
	103	u32 hook = 0;
	104	u32 index = 0;
	105
cee63723	106	if (nla == NULL)
1da177e4 LT	107	return -EINVAL;
1da177e4 LT	108
53b2bf3f	109	err = nla_parse_nested(tb, TCA_IPT_MAX, nla, ipt_policy);
cee63723 PM	110	if (err < 0)
	111	return err;
	112
53b2bf3f	113	if (tb[TCA_IPT_HOOK] == NULL)
1da177e4	114	return -EINVAL;
53b2bf3f	115	if (tb[TCA_IPT_TARG] == NULL)
1da177e4	116	return -EINVAL;
53b2bf3f	117
7ba699c6 PM	118	td = (struct ipt_entry_target *)nla_data(tb[TCA_IPT_TARG]);
7ba699c6 PM	119	if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size)
1da177e4 LT	120	return -EINVAL;
1da177e4 LT	121
53b2bf3f	122	if (tb[TCA_IPT_INDEX] != NULL)
1587bac4	123	index = nla_get_u32(tb[TCA_IPT_INDEX]);
1da177e4	124
e9ce1cd3 DM	125	pc = tcf_hash_check(index, a, bind, &ipt_hash_info);
	126	if (!pc) {
	127	pc = tcf_hash_create(index, est, a, sizeof(*ipt), bind,
	128	&ipt_idx_gen, &ipt_hash_info);
	129	if (unlikely(!pc))
1da177e4 LT	130	return -ENOMEM;
	131	ret = ACT_P_CREATED;
	132	} else {
	133	if (!ovr) {
e9ce1cd3	134	tcf_ipt_release(to_ipt(pc), bind);
1da177e4 LT	135	return -EEXIST;
	136	}
	137	}
e9ce1cd3	138	ipt = to_ipt(pc);
1da177e4	139
1587bac4	140	hook = nla_get_u32(tb[TCA_IPT_HOOK]);
1da177e4 LT	141
	142	err = -ENOMEM;
	143	tname = kmalloc(IFNAMSIZ, GFP_KERNEL);
e9ce1cd3	144	if (unlikely(!tname))
1da177e4	145	goto err1;
7ba699c6 PM	146	if (tb[TCA_IPT_TABLE] == NULL \|\|
7ba699c6 PM	147	nla_strlcpy(tname, tb[TCA_IPT_TABLE], IFNAMSIZ) >= IFNAMSIZ)
1da177e4 LT	148	strcpy(tname, "mangle");
1da177e4 LT	149
c7b1b249	150	t = kmemdup(td, td->u.target_size, GFP_KERNEL);
e9ce1cd3	151	if (unlikely(!t))
1da177e4	152	goto err2;
1da177e4 LT	153
	154	if ((err = ipt_init_target(t, tname, hook)) < 0)
	155	goto err3;
	156
e9ce1cd3	157	spin_lock_bh(&ipt->tcf_lock);
1da177e4	158	if (ret != ACT_P_CREATED) {
e9ce1cd3 DM	159	ipt_destroy_target(ipt->tcfi_t);
	160	kfree(ipt->tcfi_tname);
	161	kfree(ipt->tcfi_t);
1da177e4	162	}
e9ce1cd3 DM	163	ipt->tcfi_tname = tname;
	164	ipt->tcfi_t = t;
	165	ipt->tcfi_hook = hook;
	166	spin_unlock_bh(&ipt->tcf_lock);
1da177e4	167	if (ret == ACT_P_CREATED)
e9ce1cd3	168	tcf_hash_insert(pc, &ipt_hash_info);
1da177e4 LT	169	return ret;
	170
	171	err3:
	172	kfree(t);
	173	err2:
	174	kfree(tname);
	175	err1:
e9ce1cd3	176	kfree(pc);
1da177e4 LT	177	return err;
	178	}
	179
e9ce1cd3	180	static int tcf_ipt_cleanup(struct tc_action *a, int bind)
1da177e4	181	{
e9ce1cd3 DM	182	struct tcf_ipt *ipt = a->priv;
e9ce1cd3 DM	183	return tcf_ipt_release(ipt, bind);
1da177e4 LT	184	}
1da177e4 LT	185
e9ce1cd3 DM	186	static int tcf_ipt(struct sk_buff skb, struct tc_action a,
e9ce1cd3 DM	187	struct tcf_result *res)
1da177e4 LT	188	{
1da177e4 LT	189	int ret = 0, result = 0;
e9ce1cd3	190	struct tcf_ipt *ipt = a->priv;
1da177e4 LT	191
	192	if (skb_cloned(skb)) {
	193	if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
	194	return TC_ACT_UNSPEC;
	195	}
	196
e9ce1cd3	197	spin_lock(&ipt->tcf_lock);
1da177e4	198
e9ce1cd3	199	ipt->tcf_tm.lastuse = jiffies;
0abf77e5	200	ipt->tcf_bstats.bytes += qdisc_pkt_len(skb);
e9ce1cd3	201	ipt->tcf_bstats.packets++;
1da177e4 LT	202
	203	/* yes, we have to worry about both in and out dev
	204	worry later - danger - this API seems to have changed
	205	from earlier kernels */
3db05fea	206	ret = ipt->tcfi_t->u.kernel.target->target(skb, skb->dev, NULL,
e9ce1cd3 DM	207	ipt->tcfi_hook,
e9ce1cd3 DM	208	ipt->tcfi_t->u.kernel.target,
fe1cb108	209	ipt->tcfi_t->data);
1da177e4 LT	210	switch (ret) {
	211	case NF_ACCEPT:
	212	result = TC_ACT_OK;
	213	break;
	214	case NF_DROP:
	215	result = TC_ACT_SHOT;
e9ce1cd3	216	ipt->tcf_qstats.drops++;
1da177e4 LT	217	break;
	218	case IPT_CONTINUE:
	219	result = TC_ACT_PIPE;
	220	break;
	221	default:
	222	if (net_ratelimit())
	223	printk("Bogus netfilter code %d assume ACCEPT\n", ret);
	224	result = TC_POLICE_OK;
	225	break;
	226	}
e9ce1cd3	227	spin_unlock(&ipt->tcf_lock);
1da177e4 LT	228	return result;
	229
	230	}
	231
e9ce1cd3	232	static int tcf_ipt_dump(struct sk_buff skb, struct tc_action a, int bind, int ref)
1da177e4	233	{
27a884dc	234	unsigned char *b = skb_tail_pointer(skb);
e9ce1cd3	235	struct tcf_ipt *ipt = a->priv;
1da177e4 LT	236	struct ipt_entry_target *t;
	237	struct tcf_t tm;
	238	struct tc_cnt c;
1da177e4 LT	239
	240	/* for simple targets kernel size == user size
	241	** user name = target name
	242	** for foolproof you need to not assume this
	243	*/
	244
c7b1b249	245	t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC);
e9ce1cd3	246	if (unlikely(!t))
7ba699c6	247	goto nla_put_failure;
1da177e4	248
e9ce1cd3 DM	249	c.bindcnt = ipt->tcf_bindcnt - bind;
e9ce1cd3 DM	250	c.refcnt = ipt->tcf_refcnt - ref;
e9ce1cd3 DM	251	strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);
e9ce1cd3 DM	252
7ba699c6	253	NLA_PUT(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t);
24beeab5 PM	254	NLA_PUT_U32(skb, TCA_IPT_INDEX, ipt->tcf_index);
24beeab5 PM	255	NLA_PUT_U32(skb, TCA_IPT_HOOK, ipt->tcfi_hook);
7ba699c6	256	NLA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c);
57e1c487	257	NLA_PUT_STRING(skb, TCA_IPT_TABLE, ipt->tcfi_tname);
e9ce1cd3 DM	258	tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install);
	259	tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse);
	260	tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires);
7ba699c6	261	NLA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm);
1da177e4 LT	262	kfree(t);
	263	return skb->len;
	264
7ba699c6	265	nla_put_failure:
dc5fc579	266	nlmsg_trim(skb, b);
1da177e4 LT	267	kfree(t);
	268	return -1;
	269	}
	270
	271	static struct tc_action_ops act_ipt_ops = {
	272	.kind = "ipt",
e9ce1cd3	273	.hinfo = &ipt_hash_info,
1da177e4 LT	274	.type = TCA_ACT_IPT,
	275	.capab = TCA_CAP_NONE,
	276	.owner = THIS_MODULE,
	277	.act = tcf_ipt,
	278	.dump = tcf_ipt_dump,
	279	.cleanup = tcf_ipt_cleanup,
	280	.lookup = tcf_hash_search,
	281	.init = tcf_ipt_init,
	282	.walk = tcf_generic_walker
	283	};
	284
	285	MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
	286	MODULE_DESCRIPTION("Iptables target actions");
	287	MODULE_LICENSE("GPL");
	288
e9ce1cd3	289	static int __init ipt_init_module(void)
1da177e4 LT	290	{
	291	return tcf_register_action(&act_ipt_ops);
	292	}
	293
e9ce1cd3	294	static void __exit ipt_cleanup_module(void)
1da177e4 LT	295	{
	296	tcf_unregister_action(&act_ipt_ops);
	297	}
	298
	299	module_init(ipt_init_module);
	300	module_exit(ipt_cleanup_module);