[deliverable/linux.git] / net / sched / act_ipt.c

/*
 * net/sched/act_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 (2002-13)
 */

#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 <linux/slab.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 int ipt_init_target(struct xt_entry_target *t, char *table, unsigned int hook)
{
	struct xt_tgchk_param par;
	struct xt_target *target;
	int ret = 0;

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

	t->u.kernel.target = target;
	par.table     = table;
	par.entryinfo = NULL;
	par.target    = target;
	par.targinfo  = t->data;
	par.hook_mask = hook;
	par.family    = NFPROTO_IPV4;

	ret = xt_check_target(&par, t->u.target_size - sizeof(*t), 0, false);
	if (ret < 0) {
		module_put(t->u.kernel.target->me);
		return ret;
	}
	return 0;
}

static void ipt_destroy_target(struct xt_entry_target *t)
{
	struct xt_tgdtor_param par = {
		.target   = t->u.kernel.target,
		.targinfo = t->data,
		.family   = NFPROTO_IPV4,
	};
	if (par.target->destroy != NULL)
		par.target->destroy(&par);
	module_put(par.target->me);
}

static void tcf_ipt_release(struct tc_action *a, int bind)
{
	struct tcf_ipt *ipt = to_ipt(a);
	ipt_destroy_target(ipt->tcfi_t);
	kfree(ipt->tcfi_tname);
	kfree(ipt->tcfi_t);
}

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 xt_entry_target) },
};

static int tcf_ipt_init(struct net *net, 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 xt_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 xt_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]);

	if (!tcf_hash_check(index, a, bind) ) {
		ret = tcf_hash_create(index, est, a, sizeof(*ipt), bind, false);
		if (ret)
			return ret;
		ret = ACT_P_CREATED;
	} else {
		if (bind)/* dont override defaults */
			return 0;
		tcf_hash_release(a, bind);

		if (!ovr)
			return -EEXIST;
	}
	ipt = to_ipt(a);

	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;

	err = ipt_init_target(t, tname, hook);
	if (err < 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(a);
	return ret;

err3:
	kfree(t);
err2:
	kfree(tname);
err1:
	if (ret == ACT_P_CREATED)
		tcf_hash_cleanup(a, est);
	return err;
}

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

	if (skb_unclone(skb, GFP_ATOMIC))
		return TC_ACT_UNSPEC;

	spin_lock(&ipt->tcf_lock);

	ipt->tcf_tm.lastuse = jiffies;
	bstats_update(&ipt->tcf_bstats, skb);

	/* yes, we have to worry about both in and out dev
	 * worry later - danger - this API seems to have changed
	 * from earlier kernels
	 */
	par.net	     = dev_net(skb->dev);
	par.in       = skb->dev;
	par.out      = NULL;
	par.hooknum  = ipt->tcfi_hook;
	par.target   = ipt->tcfi_t->u.kernel.target;
	par.targinfo = ipt->tcfi_t->data;
	par.family   = NFPROTO_IPV4;
	ret = par.target->target(skb, &par);

	switch (ret) {
	case NF_ACCEPT:
		result = TC_ACT_OK;
		break;
	case NF_DROP:
		result = TC_ACT_SHOT;
		ipt->tcf_qstats.drops++;
		break;
	case XT_CONTINUE:
		result = TC_ACT_PIPE;
		break;
	default:
		net_notice_ratelimited("tc filter: 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 xt_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);

	if (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))
		goto nla_put_failure;
	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);
	if (nla_put(skb, TCA_IPT_TM, sizeof (tm), &tm))
		goto nla_put_failure;
	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",
	.type		=	TCA_ACT_IPT,
	.owner		=	THIS_MODULE,
	.act		=	tcf_ipt,
	.dump		=	tcf_ipt_dump,
	.cleanup	=	tcf_ipt_release,
	.init		=	tcf_ipt_init,
};

static struct tc_action_ops act_xt_ops = {
	.kind		=	"xt",
	.type		=	TCA_ACT_XT,
	.owner		=	THIS_MODULE,
	.act		=	tcf_ipt,
	.dump		=	tcf_ipt_dump,
	.cleanup	=	tcf_ipt_release,
	.init		=	tcf_ipt_init,
};

MODULE_AUTHOR("Jamal Hadi Salim(2002-13)");
MODULE_DESCRIPTION("Iptables target actions");
MODULE_LICENSE("GPL");
MODULE_ALIAS("act_xt");

static int __init ipt_init_module(void)
{
	int ret1, ret2;

	ret1 = tcf_register_action(&act_xt_ops, IPT_TAB_MASK);
	if (ret1 < 0)
		printk("Failed to load xt action\n");
	ret2 = tcf_register_action(&act_ipt_ops, IPT_TAB_MASK);
	if (ret2 < 0)
		printk("Failed to load ipt action\n");

	if (ret1 < 0 && ret2 < 0) {
		return ret1;
	} else
		return 0;
}

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

module_init(ipt_init_module);
module_exit(ipt_cleanup_module);
Commit	Line	Data
1da177e4	1	/*
0c6965dd	2	* net/sched/act_ipt.c iptables target interface
1da177e4 LT	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	*
0dcffd09	11	* Copyright: Jamal Hadi Salim (2002-13)
1da177e4 LT	12	*/
1da177e4 LT	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>
5a0e3ad6	22	#include <linux/slab.h>
dc5fc579	23	#include <net/netlink.h>
1da177e4 LT	24	#include <net/pkt_sched.h>
	25	#include <linux/tc_act/tc_ipt.h>
	26	#include <net/tc_act/tc_ipt.h>
	27
	28	#include <linux/netfilter_ipv4/ip_tables.h>
	29
1da177e4	30
e9ce1cd3	31	#define IPT_TAB_MASK 15
1da177e4	32
87a2e70d	33	static int ipt_init_target(struct xt_entry_target t, char table, unsigned int hook)
1da177e4	34	{
af5d6dc2	35	struct xt_tgchk_param par;
e60a13e0	36	struct xt_target *target;
1da177e4 LT	37	int ret = 0;
1da177e4 LT	38
239a87c8 PM	39	target = xt_request_find_target(AF_INET, t->u.user.name,
239a87c8 PM	40	t->u.user.revision);
d2a7b6ba JE	41	if (IS_ERR(target))
d2a7b6ba JE	42	return PTR_ERR(target);
1da177e4	43
1da177e4	44	t->u.kernel.target = target;
af5d6dc2 JE	45	par.table = table;
	46	par.entryinfo = NULL;
	47	par.target = target;
	48	par.targinfo = t->data;
	49	par.hook_mask = hook;
916a917d	50	par.family = NFPROTO_IPV4;
1da177e4	51
916a917d	52	ret = xt_check_target(&par, t->u.target_size - sizeof(*t), 0, false);
367c6790	53	if (ret < 0) {
239a87c8	54	module_put(t->u.kernel.target->me);
18118cdb	55	return ret;
239a87c8	56	}
367c6790	57	return 0;
1da177e4 LT	58	}
1da177e4 LT	59
87a2e70d	60	static void ipt_destroy_target(struct xt_entry_target *t)
1da177e4	61	{
a2df1648 JE	62	struct xt_tgdtor_param par = {
	63	.target = t->u.kernel.target,
	64	.targinfo = t->data,
44ef548f	65	.family = NFPROTO_IPV4,
a2df1648 JE	66	};
	67	if (par.target->destroy != NULL)
	68	par.target->destroy(&par);
	69	module_put(par.target->me);
1da177e4 LT	70	}
1da177e4 LT	71
a5b5c958	72	static void tcf_ipt_release(struct tc_action *a, int bind)
1da177e4	73	{
86062033	74	struct tcf_ipt *ipt = to_ipt(a);
a5b5c958 WC	75	ipt_destroy_target(ipt->tcfi_t);
	76	kfree(ipt->tcfi_tname);
	77	kfree(ipt->tcfi_t);
1da177e4 LT	78	}
1da177e4 LT	79
53b2bf3f PM	80	static const struct nla_policy ipt_policy[TCA_IPT_MAX + 1] = {
	81	[TCA_IPT_TABLE] = { .type = NLA_STRING, .len = IFNAMSIZ },
	82	[TCA_IPT_HOOK] = { .type = NLA_U32 },
	83	[TCA_IPT_INDEX] = { .type = NLA_U32 },
87a2e70d	84	[TCA_IPT_TARG] = { .len = sizeof(struct xt_entry_target) },
53b2bf3f PM	85	};
53b2bf3f PM	86
c1b52739	87	static int tcf_ipt_init(struct net net, struct nlattr nla, struct nlattr *est,
e9ce1cd3	88	struct tc_action *a, int ovr, int bind)
1da177e4	89	{
7ba699c6	90	struct nlattr *tb[TCA_IPT_MAX + 1];
e9ce1cd3	91	struct tcf_ipt *ipt;
87a2e70d	92	struct xt_entry_target td, t;
1da177e4 LT	93	char *tname;
	94	int ret = 0, err;
	95	u32 hook = 0;
	96	u32 index = 0;
	97
cee63723	98	if (nla == NULL)
1da177e4 LT	99	return -EINVAL;
1da177e4 LT	100
53b2bf3f	101	err = nla_parse_nested(tb, TCA_IPT_MAX, nla, ipt_policy);
cee63723 PM	102	if (err < 0)
	103	return err;
	104
53b2bf3f	105	if (tb[TCA_IPT_HOOK] == NULL)
1da177e4	106	return -EINVAL;
53b2bf3f	107	if (tb[TCA_IPT_TARG] == NULL)
1da177e4	108	return -EINVAL;
53b2bf3f	109
87a2e70d	110	td = (struct xt_entry_target *)nla_data(tb[TCA_IPT_TARG]);
7ba699c6	111	if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size)
1da177e4 LT	112	return -EINVAL;
1da177e4 LT	113
53b2bf3f	114	if (tb[TCA_IPT_INDEX] != NULL)
1587bac4	115	index = nla_get_u32(tb[TCA_IPT_INDEX]);
1da177e4	116
86062033	117	if (!tcf_hash_check(index, a, bind) ) {
519c818e	118	ret = tcf_hash_create(index, est, a, sizeof(*ipt), bind, false);
86062033 WC	119	if (ret)
86062033 WC	120	return ret;
1da177e4 LT	121	ret = ACT_P_CREATED;
1da177e4 LT	122	} else {
1a29321e JHS	123	if (bind)/* dont override defaults */
1a29321e JHS	124	return 0;
a5b5c958	125	tcf_hash_release(a, bind);
1a29321e JHS	126
1a29321e JHS	127	if (!ovr)
1da177e4	128	return -EEXIST;
1da177e4	129	}
86062033	130	ipt = to_ipt(a);
1da177e4	131
1587bac4	132	hook = nla_get_u32(tb[TCA_IPT_HOOK]);
1da177e4 LT	133
	134	err = -ENOMEM;
	135	tname = kmalloc(IFNAMSIZ, GFP_KERNEL);
e9ce1cd3	136	if (unlikely(!tname))
1da177e4	137	goto err1;
7ba699c6 PM	138	if (tb[TCA_IPT_TABLE] == NULL \|\|
7ba699c6 PM	139	nla_strlcpy(tname, tb[TCA_IPT_TABLE], IFNAMSIZ) >= IFNAMSIZ)
1da177e4 LT	140	strcpy(tname, "mangle");
1da177e4 LT	141
c7b1b249	142	t = kmemdup(td, td->u.target_size, GFP_KERNEL);
e9ce1cd3	143	if (unlikely(!t))
1da177e4	144	goto err2;
1da177e4	145
cc7ec456 ED	146	err = ipt_init_target(t, tname, hook);
cc7ec456 ED	147	if (err < 0)
1da177e4 LT	148	goto err3;
1da177e4 LT	149
e9ce1cd3	150	spin_lock_bh(&ipt->tcf_lock);
1da177e4	151	if (ret != ACT_P_CREATED) {
e9ce1cd3 DM	152	ipt_destroy_target(ipt->tcfi_t);
	153	kfree(ipt->tcfi_tname);
	154	kfree(ipt->tcfi_t);
1da177e4	155	}
e9ce1cd3 DM	156	ipt->tcfi_tname = tname;
	157	ipt->tcfi_t = t;
	158	ipt->tcfi_hook = hook;
	159	spin_unlock_bh(&ipt->tcf_lock);
1da177e4	160	if (ret == ACT_P_CREATED)
86062033	161	tcf_hash_insert(a);
1da177e4 LT	162	return ret;
	163
	164	err3:
	165	kfree(t);
	166	err2:
	167	kfree(tname);
	168	err1:
86062033 WC	169	if (ret == ACT_P_CREATED)
86062033 WC	170	tcf_hash_cleanup(a, est);
1da177e4 LT	171	return err;
	172	}
	173
dc7f9f6e	174	static int tcf_ipt(struct sk_buff skb, const struct tc_action a,
e9ce1cd3	175	struct tcf_result *res)
1da177e4 LT	176	{
1da177e4 LT	177	int ret = 0, result = 0;
e9ce1cd3	178	struct tcf_ipt *ipt = a->priv;
4b560b44	179	struct xt_action_param par;
1da177e4	180
14bbd6a5 PS	181	if (skb_unclone(skb, GFP_ATOMIC))
14bbd6a5 PS	182	return TC_ACT_UNSPEC;
1da177e4	183
e9ce1cd3	184	spin_lock(&ipt->tcf_lock);
1da177e4	185
e9ce1cd3	186	ipt->tcf_tm.lastuse = jiffies;
bfe0d029	187	bstats_update(&ipt->tcf_bstats, skb);
1da177e4 LT	188
1da177e4 LT	189	/* yes, we have to worry about both in and out dev
cc7ec456 ED	190	* worry later - danger - this API seems to have changed
	191	* from earlier kernels
	192	*/
156c196f	193	par.net = dev_net(skb->dev);
7eb35586 JE	194	par.in = skb->dev;
	195	par.out = NULL;
	196	par.hooknum = ipt->tcfi_hook;
	197	par.target = ipt->tcfi_t->u.kernel.target;
	198	par.targinfo = ipt->tcfi_t->data;
44ef548f	199	par.family = NFPROTO_IPV4;
7eb35586 JE	200	ret = par.target->target(skb, &par);
7eb35586 JE	201
1da177e4 LT	202	switch (ret) {
	203	case NF_ACCEPT:
	204	result = TC_ACT_OK;
	205	break;
	206	case NF_DROP:
	207	result = TC_ACT_SHOT;
e9ce1cd3	208	ipt->tcf_qstats.drops++;
1da177e4	209	break;
243bf6e2	210	case XT_CONTINUE:
1da177e4 LT	211	result = TC_ACT_PIPE;
	212	break;
	213	default:
e87cc472 JP	214	net_notice_ratelimited("tc filter: Bogus netfilter code %d assume ACCEPT\n",
e87cc472 JP	215	ret);
1da177e4 LT	216	result = TC_POLICE_OK;
	217	break;
	218	}
e9ce1cd3	219	spin_unlock(&ipt->tcf_lock);
1da177e4 LT	220	return result;
	221
	222	}
	223
e9ce1cd3	224	static int tcf_ipt_dump(struct sk_buff skb, struct tc_action a, int bind, int ref)
1da177e4	225	{
27a884dc	226	unsigned char *b = skb_tail_pointer(skb);
e9ce1cd3	227	struct tcf_ipt *ipt = a->priv;
87a2e70d	228	struct xt_entry_target *t;
1da177e4 LT	229	struct tcf_t tm;
1da177e4 LT	230	struct tc_cnt c;
1da177e4 LT	231
1da177e4 LT	232	/* for simple targets kernel size == user size
cc7ec456 ED	233	* user name = target name
	234	* for foolproof you need to not assume this
	235	*/
1da177e4	236
c7b1b249	237	t = kmemdup(ipt->tcfi_t, ipt->tcfi_t->u.user.target_size, GFP_ATOMIC);
e9ce1cd3	238	if (unlikely(!t))
7ba699c6	239	goto nla_put_failure;
1da177e4	240
e9ce1cd3 DM	241	c.bindcnt = ipt->tcf_bindcnt - bind;
e9ce1cd3 DM	242	c.refcnt = ipt->tcf_refcnt - ref;
e9ce1cd3 DM	243	strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);
e9ce1cd3 DM	244
1b34ec43 DM	245	if (nla_put(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t) \|\|
	246	nla_put_u32(skb, TCA_IPT_INDEX, ipt->tcf_index) \|\|
	247	nla_put_u32(skb, TCA_IPT_HOOK, ipt->tcfi_hook) \|\|
	248	nla_put(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c) \|\|
	249	nla_put_string(skb, TCA_IPT_TABLE, ipt->tcfi_tname))
	250	goto nla_put_failure;
e9ce1cd3 DM	251	tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install);
	252	tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse);
	253	tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires);
1b34ec43 DM	254	if (nla_put(skb, TCA_IPT_TM, sizeof (tm), &tm))
1b34ec43 DM	255	goto nla_put_failure;
1da177e4 LT	256	kfree(t);
	257	return skb->len;
	258
7ba699c6	259	nla_put_failure:
dc5fc579	260	nlmsg_trim(skb, b);
1da177e4 LT	261	kfree(t);
	262	return -1;
	263	}
	264
	265	static struct tc_action_ops act_ipt_ops = {
	266	.kind = "ipt",
	267	.type = TCA_ACT_IPT,
1da177e4 LT	268	.owner = THIS_MODULE,
	269	.act = tcf_ipt,
	270	.dump = tcf_ipt_dump,
86062033	271	.cleanup = tcf_ipt_release,
1da177e4	272	.init = tcf_ipt_init,
1da177e4 LT	273	};
1da177e4 LT	274
0dcffd09 JHS	275	static struct tc_action_ops act_xt_ops = {
0dcffd09 JHS	276	.kind = "xt",
6c80563c	277	.type = TCA_ACT_XT,
0dcffd09 JHS	278	.owner = THIS_MODULE,
	279	.act = tcf_ipt,
	280	.dump = tcf_ipt_dump,
86062033	281	.cleanup = tcf_ipt_release,
0dcffd09	282	.init = tcf_ipt_init,
0dcffd09 JHS	283	};
	284
	285	MODULE_AUTHOR("Jamal Hadi Salim(2002-13)");
1da177e4 LT	286	MODULE_DESCRIPTION("Iptables target actions");
1da177e4 LT	287	MODULE_LICENSE("GPL");
0dcffd09	288	MODULE_ALIAS("act_xt");
1da177e4	289
e9ce1cd3	290	static int __init ipt_init_module(void)
1da177e4	291	{
4f1e9d89	292	int ret1, ret2;
369ba567	293
4f1e9d89	294	ret1 = tcf_register_action(&act_xt_ops, IPT_TAB_MASK);
0dcffd09 JHS	295	if (ret1 < 0)
0dcffd09 JHS	296	printk("Failed to load xt action\n");
4f1e9d89	297	ret2 = tcf_register_action(&act_ipt_ops, IPT_TAB_MASK);
0dcffd09 JHS	298	if (ret2 < 0)
	299	printk("Failed to load ipt action\n");
	300
369ba567	301	if (ret1 < 0 && ret2 < 0) {
0dcffd09	302	return ret1;
369ba567	303	} else
0dcffd09	304	return 0;
1da177e4 LT	305	}
1da177e4 LT	306
e9ce1cd3	307	static void __exit ipt_cleanup_module(void)
1da177e4	308	{
0dcffd09	309	tcf_unregister_action(&act_xt_ops);
1da177e4 LT	310	tcf_unregister_action(&act_ipt_ops);
	311	}
	312
	313	module_init(ipt_init_module);
	314	module_exit(ipt_cleanup_module);