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

/*
 * net/sched/cls_fw.c	Classifier mapping ipchains' fwmark to traffic class.
 *
 *		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.
 *
 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 * Changes:
 * Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_walk off by one
 * Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_delete killed all the filter (and kernel).
 * Alex <alex@pilotsoft.com> : 2004xxyy: Added Action extension
 *
 * JHS: We should remove the CONFIG_NET_CLS_IND from here
 * eventually when the meta match extension is made available
 *
 */

#include <linux/config.h>
#include <linux/module.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/in.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/if_ether.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/notifier.h>
#include <linux/netfilter.h>
#include <net/ip.h>
#include <net/route.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>

#define HTSIZE (PAGE_SIZE/sizeof(struct fw_filter *))

struct fw_head
{
	struct fw_filter *ht[HTSIZE];
};

struct fw_filter
{
	struct fw_filter	*next;
	u32			id;
	struct tcf_result	res;
#ifdef CONFIG_NET_CLS_IND
	char			indev[IFNAMSIZ];
#endif /* CONFIG_NET_CLS_IND */
	struct tcf_exts		exts;
};

static struct tcf_ext_map fw_ext_map = {
	.action = TCA_FW_ACT,
	.police = TCA_FW_POLICE
};

static __inline__ int fw_hash(u32 handle)
{
	if (HTSIZE == 4096)
		return ((handle >> 24) & 0xFFF) ^
		       ((handle >> 12) & 0xFFF) ^
		       (handle & 0xFFF);
	else if (HTSIZE == 2048)
		return ((handle >> 22) & 0x7FF) ^
		       ((handle >> 11) & 0x7FF) ^
		       (handle & 0x7FF);
	else if (HTSIZE == 1024)
		return ((handle >> 20) & 0x3FF) ^
		       ((handle >> 10) & 0x3FF) ^
		       (handle & 0x3FF);
	else if (HTSIZE == 512)
		return (handle >> 27) ^
		       ((handle >> 18) & 0x1FF) ^
		       ((handle >> 9) & 0x1FF) ^
		       (handle & 0x1FF);
	else if (HTSIZE == 256) {
		u8 *t = (u8 *) &handle;
		return t[0] ^ t[1] ^ t[2] ^ t[3];
	} else 
		return handle & (HTSIZE - 1);
}

static int fw_classify(struct sk_buff *skb, struct tcf_proto *tp,
			  struct tcf_result *res)
{
	struct fw_head *head = (struct fw_head*)tp->root;
	struct fw_filter *f;
	int r;
#ifdef CONFIG_NETFILTER
	u32 id = skb->nfmark;
#else
	u32 id = 0;
#endif

	if (head != NULL) {
		for (f=head->ht[fw_hash(id)]; f; f=f->next) {
			if (f->id == id) {
				*res = f->res;
#ifdef CONFIG_NET_CLS_IND
				if (!tcf_match_indev(skb, f->indev))
					continue;
#endif /* CONFIG_NET_CLS_IND */
				r = tcf_exts_exec(skb, &f->exts, res);
				if (r < 0)
					continue;

				return r;
			}
		}
	} else {
		/* old method */
		if (id && (TC_H_MAJ(id) == 0 || !(TC_H_MAJ(id^tp->q->handle)))) {
			res->classid = id;
			res->class = 0;
			return 0;
		}
	}

	return -1;
}

static unsigned long fw_get(struct tcf_proto *tp, u32 handle)
{
	struct fw_head *head = (struct fw_head*)tp->root;
	struct fw_filter *f;

	if (head == NULL)
		return 0;

	for (f=head->ht[fw_hash(handle)]; f; f=f->next) {
		if (f->id == handle)
			return (unsigned long)f;
	}
	return 0;
}

static void fw_put(struct tcf_proto *tp, unsigned long f)
{
}

static int fw_init(struct tcf_proto *tp)
{
	return 0;
}

static inline void
fw_delete_filter(struct tcf_proto *tp, struct fw_filter *f)
{
	tcf_unbind_filter(tp, &f->res);
	tcf_exts_destroy(tp, &f->exts);
	kfree(f);
}

static void fw_destroy(struct tcf_proto *tp)
{
	struct fw_head *head = (struct fw_head*)xchg(&tp->root, NULL);
	struct fw_filter *f;
	int h;

	if (head == NULL)
		return;

	for (h=0; h<HTSIZE; h++) {
		while ((f=head->ht[h]) != NULL) {
			head->ht[h] = f->next;
			fw_delete_filter(tp, f);
		}
	}
	kfree(head);
}

static int fw_delete(struct tcf_proto *tp, unsigned long arg)
{
	struct fw_head *head = (struct fw_head*)tp->root;
	struct fw_filter *f = (struct fw_filter*)arg;
	struct fw_filter **fp;

	if (head == NULL || f == NULL)
		goto out;

	for (fp=&head->ht[fw_hash(f->id)]; *fp; fp = &(*fp)->next) {
		if (*fp == f) {
			tcf_tree_lock(tp);
			*fp = f->next;
			tcf_tree_unlock(tp);
			fw_delete_filter(tp, f);
			return 0;
		}
	}
out:
	return -EINVAL;
}

static int
fw_change_attrs(struct tcf_proto *tp, struct fw_filter *f,
	struct rtattr **tb, struct rtattr **tca, unsigned long base)
{
	struct tcf_exts e;
	int err;

	err = tcf_exts_validate(tp, tb, tca[TCA_RATE-1], &e, &fw_ext_map);
	if (err < 0)
		return err;

	err = -EINVAL;
	if (tb[TCA_FW_CLASSID-1]) {
		if (RTA_PAYLOAD(tb[TCA_FW_CLASSID-1]) != sizeof(u32))
			goto errout;
		f->res.classid = *(u32*)RTA_DATA(tb[TCA_FW_CLASSID-1]);
		tcf_bind_filter(tp, &f->res, base);
	}

#ifdef CONFIG_NET_CLS_IND
	if (tb[TCA_FW_INDEV-1]) {
		err = tcf_change_indev(tp, f->indev, tb[TCA_FW_INDEV-1]);
		if (err < 0)
			goto errout;
	}
#endif /* CONFIG_NET_CLS_IND */

	tcf_exts_change(tp, &f->exts, &e);

	return 0;
errout:
	tcf_exts_destroy(tp, &e);
	return err;
}

static int fw_change(struct tcf_proto *tp, unsigned long base,
		     u32 handle,
		     struct rtattr **tca,
		     unsigned long *arg)
{
	struct fw_head *head = (struct fw_head*)tp->root;
	struct fw_filter *f = (struct fw_filter *) *arg;
	struct rtattr *opt = tca[TCA_OPTIONS-1];
	struct rtattr *tb[TCA_FW_MAX];
	int err;

	if (!opt)
		return handle ? -EINVAL : 0;

	if (rtattr_parse_nested(tb, TCA_FW_MAX, opt) < 0)
		return -EINVAL;

	if (f != NULL) {
		if (f->id != handle && handle)
			return -EINVAL;
		return fw_change_attrs(tp, f, tb, tca, base);
	}

	if (!handle)
		return -EINVAL;

	if (head == NULL) {
		head = kmalloc(sizeof(struct fw_head), GFP_KERNEL);
		if (head == NULL)
			return -ENOBUFS;
		memset(head, 0, sizeof(*head));

		tcf_tree_lock(tp);
		tp->root = head;
		tcf_tree_unlock(tp);
	}

	f = kmalloc(sizeof(struct fw_filter), GFP_KERNEL);
	if (f == NULL)
		return -ENOBUFS;
	memset(f, 0, sizeof(*f));

	f->id = handle;

	err = fw_change_attrs(tp, f, tb, tca, base);
	if (err < 0)
		goto errout;

	f->next = head->ht[fw_hash(handle)];
	tcf_tree_lock(tp);
	head->ht[fw_hash(handle)] = f;
	tcf_tree_unlock(tp);

	*arg = (unsigned long)f;
	return 0;

errout:
	if (f)
		kfree(f);
	return err;
}

static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
	struct fw_head *head = (struct fw_head*)tp->root;
	int h;

	if (head == NULL)
		arg->stop = 1;

	if (arg->stop)
		return;

	for (h = 0; h < HTSIZE; h++) {
		struct fw_filter *f;

		for (f = head->ht[h]; f; f = f->next) {
			if (arg->count < arg->skip) {
				arg->count++;
				continue;
			}
			if (arg->fn(tp, (unsigned long)f, arg) < 0) {
				arg->stop = 1;
				return;
			}
			arg->count++;
		}
	}
}

static int fw_dump(struct tcf_proto *tp, unsigned long fh,
		   struct sk_buff *skb, struct tcmsg *t)
{
	struct fw_filter *f = (struct fw_filter*)fh;
	unsigned char	 *b = skb->tail;
	struct rtattr *rta;

	if (f == NULL)
		return skb->len;

	t->tcm_handle = f->id;

	if (!f->res.classid && !tcf_exts_is_available(&f->exts))
		return skb->len;

	rta = (struct rtattr*)b;
	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);

	if (f->res.classid)
		RTA_PUT(skb, TCA_FW_CLASSID, 4, &f->res.classid);
#ifdef CONFIG_NET_CLS_IND
	if (strlen(f->indev))
		RTA_PUT(skb, TCA_FW_INDEV, IFNAMSIZ, f->indev);
#endif /* CONFIG_NET_CLS_IND */

	if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0)
		goto rtattr_failure;

	rta->rta_len = skb->tail - b;

	if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
		goto rtattr_failure;

	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

static struct tcf_proto_ops cls_fw_ops = {
	.next		=	NULL,
	.kind		=	"fw",
	.classify	=	fw_classify,
	.init		=	fw_init,
	.destroy	=	fw_destroy,
	.get		=	fw_get,
	.put		=	fw_put,
	.change		=	fw_change,
	.delete		=	fw_delete,
	.walk		=	fw_walk,
	.dump		=	fw_dump,
	.owner		=	THIS_MODULE,
};

static int __init init_fw(void)
{
	return register_tcf_proto_ops(&cls_fw_ops);
}

static void __exit exit_fw(void) 
{
	unregister_tcf_proto_ops(&cls_fw_ops);
}

module_init(init_fw)
module_exit(exit_fw)
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* net/sched/cls_fw.c Classifier mapping ipchains' fwmark to traffic class.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
	10	*
	11	* Changes:
	12	* Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_walk off by one
	13	* Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_delete killed all the filter (and kernel).
	14	* Alex <alex@pilotsoft.com> : 2004xxyy: Added Action extension
	15	*
	16	* JHS: We should remove the CONFIG_NET_CLS_IND from here
	17	* eventually when the meta match extension is made available
	18	*
	19	*/
	20
	21	#include <linux/config.h>
	22	#include <linux/module.h>
	23	#include <asm/uaccess.h>
	24	#include <asm/system.h>
	25	#include <linux/bitops.h>
	26	#include <linux/types.h>
	27	#include <linux/kernel.h>
	28	#include <linux/sched.h>
	29	#include <linux/string.h>
	30	#include <linux/mm.h>
	31	#include <linux/socket.h>
	32	#include <linux/sockios.h>
	33	#include <linux/in.h>
	34	#include <linux/errno.h>
	35	#include <linux/interrupt.h>
	36	#include <linux/if_ether.h>
	37	#include <linux/inet.h>
	38	#include <linux/netdevice.h>
	39	#include <linux/etherdevice.h>
	40	#include <linux/notifier.h>
	41	#include <linux/netfilter.h>
	42	#include <net/ip.h>
	43	#include <net/route.h>
	44	#include <linux/skbuff.h>
	45	#include <net/sock.h>
	46	#include <net/act_api.h>
	47	#include <net/pkt_cls.h>
	48
c5c13faf TG	49	#define HTSIZE (PAGE_SIZE/sizeof(struct fw_filter *))
c5c13faf TG	50
1da177e4 LT	51	struct fw_head
1da177e4 LT	52	{
c5c13faf	53	struct fw_filter *ht[HTSIZE];
1da177e4 LT	54	};
	55
	56	struct fw_filter
	57	{
	58	struct fw_filter *next;
	59	u32 id;
	60	struct tcf_result res;
	61	#ifdef CONFIG_NET_CLS_IND
	62	char indev[IFNAMSIZ];
	63	#endif /* CONFIG_NET_CLS_IND */
	64	struct tcf_exts exts;
	65	};
	66
	67	static struct tcf_ext_map fw_ext_map = {
	68	.action = TCA_FW_ACT,
	69	.police = TCA_FW_POLICE
	70	};
	71
	72	static __inline__ int fw_hash(u32 handle)
	73	{
c5c13faf TG	74	if (HTSIZE == 4096)
	75	return ((handle >> 24) & 0xFFF) ^
	76	((handle >> 12) & 0xFFF) ^
	77	(handle & 0xFFF);
	78	else if (HTSIZE == 2048)
	79	return ((handle >> 22) & 0x7FF) ^
	80	((handle >> 11) & 0x7FF) ^
	81	(handle & 0x7FF);
	82	else if (HTSIZE == 1024)
	83	return ((handle >> 20) & 0x3FF) ^
	84	((handle >> 10) & 0x3FF) ^
	85	(handle & 0x3FF);
	86	else if (HTSIZE == 512)
	87	return (handle >> 27) ^
	88	((handle >> 18) & 0x1FF) ^
	89	((handle >> 9) & 0x1FF) ^
	90	(handle & 0x1FF);
	91	else if (HTSIZE == 256) {
	92	u8 t = (u8 ) &handle;
	93	return t[0] ^ t[1] ^ t[2] ^ t[3];
	94	} else
	95	return handle & (HTSIZE - 1);
1da177e4 LT	96	}
	97
	98	static int fw_classify(struct sk_buff skb, struct tcf_proto tp,
	99	struct tcf_result *res)
	100	{
	101	struct fw_head head = (struct fw_head)tp->root;
	102	struct fw_filter *f;
	103	int r;
	104	#ifdef CONFIG_NETFILTER
	105	u32 id = skb->nfmark;
	106	#else
	107	u32 id = 0;
	108	#endif
	109
	110	if (head != NULL) {
	111	for (f=head->ht[fw_hash(id)]; f; f=f->next) {
	112	if (f->id == id) {
	113	*res = f->res;
	114	#ifdef CONFIG_NET_CLS_IND
	115	if (!tcf_match_indev(skb, f->indev))
	116	continue;
	117	#endif /* CONFIG_NET_CLS_IND */
	118	r = tcf_exts_exec(skb, &f->exts, res);
	119	if (r < 0)
	120	continue;
	121
	122	return r;
	123	}
	124	}
	125	} else {
	126	/* old method */
	127	if (id && (TC_H_MAJ(id) == 0 \|\| !(TC_H_MAJ(id^tp->q->handle)))) {
	128	res->classid = id;
	129	res->class = 0;
	130	return 0;
	131	}
	132	}
	133
	134	return -1;
	135	}
	136
	137	static unsigned long fw_get(struct tcf_proto *tp, u32 handle)
	138	{
	139	struct fw_head head = (struct fw_head)tp->root;
	140	struct fw_filter *f;
	141
	142	if (head == NULL)
	143	return 0;
	144
	145	for (f=head->ht[fw_hash(handle)]; f; f=f->next) {
	146	if (f->id == handle)
	147	return (unsigned long)f;
	148	}
	149	return 0;
	150	}
	151
	152	static void fw_put(struct tcf_proto *tp, unsigned long f)
	153	{
	154	}
	155
	156	static int fw_init(struct tcf_proto *tp)
	157	{
	158	return 0;
	159	}
160
161	static inline void
162	fw_delete_filter(struct tcf_proto tp, struct fw_filter f)
163	{
164	tcf_unbind_filter(tp, &f->res);
165	tcf_exts_destroy(tp, &f->exts);
166	kfree(f);
167	}
168
169	static void fw_destroy(struct tcf_proto *tp)
170	{
171	struct fw_head head = (struct fw_head)xchg(&tp->root, NULL);
172	struct fw_filter *f;
173	int h;
174
175	if (head == NULL)
176	return;
177
c5c13faf	178	for (h=0; h<HTSIZE; h++) {
1da177e4 LT	179	while ((f=head->ht[h]) != NULL) {
	180	head->ht[h] = f->next;
	181	fw_delete_filter(tp, f);
	182	}
	183	}
	184	kfree(head);
	185	}
	186
	187	static int fw_delete(struct tcf_proto *tp, unsigned long arg)
	188	{
	189	struct fw_head head = (struct fw_head)tp->root;
	190	struct fw_filter f = (struct fw_filter)arg;
	191	struct fw_filter **fp;
	192
	193	if (head == NULL \|\| f == NULL)
	194	goto out;
	195
	196	for (fp=&head->ht[fw_hash(f->id)]; fp; fp = &(fp)->next) {
	197	if (*fp == f) {
	198	tcf_tree_lock(tp);
	199	*fp = f->next;
	200	tcf_tree_unlock(tp);
	201	fw_delete_filter(tp, f);
	202	return 0;
	203	}
	204	}
	205	out:
	206	return -EINVAL;
	207	}
	208
	209	static int
	210	fw_change_attrs(struct tcf_proto tp, struct fw_filter f,
	211	struct rtattr tb, struct rtattr tca, unsigned long base)
	212	{
	213	struct tcf_exts e;
	214	int err;
	215
	216	err = tcf_exts_validate(tp, tb, tca[TCA_RATE-1], &e, &fw_ext_map);
	217	if (err < 0)
	218	return err;
	219
	220	err = -EINVAL;
	221	if (tb[TCA_FW_CLASSID-1]) {
	222	if (RTA_PAYLOAD(tb[TCA_FW_CLASSID-1]) != sizeof(u32))
	223	goto errout;
	224	f->res.classid = (u32)RTA_DATA(tb[TCA_FW_CLASSID-1]);
	225	tcf_bind_filter(tp, &f->res, base);
	226	}
	227
	228	#ifdef CONFIG_NET_CLS_IND
	229	if (tb[TCA_FW_INDEV-1]) {
	230	err = tcf_change_indev(tp, f->indev, tb[TCA_FW_INDEV-1]);
	231	if (err < 0)
	232	goto errout;
	233	}
	234	#endif /* CONFIG_NET_CLS_IND */
	235
	236	tcf_exts_change(tp, &f->exts, &e);
	237
	238	return 0;
	239	errout:
	240	tcf_exts_destroy(tp, &e);
	241	return err;
	242	}
243
244	static int fw_change(struct tcf_proto *tp, unsigned long base,
245	u32 handle,
246	struct rtattr **tca,
247	unsigned long *arg)
248	{
249	struct fw_head head = (struct fw_head)tp->root;
250	struct fw_filter f = (struct fw_filter ) *arg;
251	struct rtattr *opt = tca[TCA_OPTIONS-1];
252	struct rtattr *tb[TCA_FW_MAX];
253	int err;
254
255	if (!opt)
256	return handle ? -EINVAL : 0;
257
258	if (rtattr_parse_nested(tb, TCA_FW_MAX, opt) < 0)
259	return -EINVAL;
260
261	if (f != NULL) {
262	if (f->id != handle && handle)
263	return -EINVAL;
264	return fw_change_attrs(tp, f, tb, tca, base);
265	}
266
267	if (!handle)
268	return -EINVAL;
269
270	if (head == NULL) {
271	head = kmalloc(sizeof(struct fw_head), GFP_KERNEL);
272	if (head == NULL)
273	return -ENOBUFS;
274	memset(head, 0, sizeof(*head));
275
276	tcf_tree_lock(tp);
277	tp->root = head;
278	tcf_tree_unlock(tp);
279	}
280
281	f = kmalloc(sizeof(struct fw_filter), GFP_KERNEL);
282	if (f == NULL)
283	return -ENOBUFS;
284	memset(f, 0, sizeof(*f));
285
286	f->id = handle;
287
288	err = fw_change_attrs(tp, f, tb, tca, base);
289	if (err < 0)
290	goto errout;
291
292	f->next = head->ht[fw_hash(handle)];
293	tcf_tree_lock(tp);
294	head->ht[fw_hash(handle)] = f;
295	tcf_tree_unlock(tp);
296
297	*arg = (unsigned long)f;
298	return 0;
299
300	errout:
301	if (f)
302	kfree(f);
303	return err;
304	}
305
306	static void fw_walk(struct tcf_proto tp, struct tcf_walker arg)
307	{
308	struct fw_head head = (struct fw_head)tp->root;
309	int h;
310
311	if (head == NULL)
312	arg->stop = 1;
313
314	if (arg->stop)
315	return;
316
c5c13faf	317	for (h = 0; h < HTSIZE; h++) {
1da177e4 LT	318	struct fw_filter *f;
	319
	320	for (f = head->ht[h]; f; f = f->next) {
	321	if (arg->count < arg->skip) {
	322	arg->count++;
	323	continue;
	324	}
	325	if (arg->fn(tp, (unsigned long)f, arg) < 0) {
	326	arg->stop = 1;
	327	return;
	328	}
	329	arg->count++;
	330	}
	331	}
	332	}
	333
	334	static int fw_dump(struct tcf_proto *tp, unsigned long fh,
	335	struct sk_buff skb, struct tcmsg t)
	336	{
	337	struct fw_filter f = (struct fw_filter)fh;
	338	unsigned char *b = skb->tail;
	339	struct rtattr *rta;
	340
	341	if (f == NULL)
	342	return skb->len;
	343
	344	t->tcm_handle = f->id;
	345
	346	if (!f->res.classid && !tcf_exts_is_available(&f->exts))
	347	return skb->len;
	348
	349	rta = (struct rtattr*)b;
	350	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
	351
	352	if (f->res.classid)
	353	RTA_PUT(skb, TCA_FW_CLASSID, 4, &f->res.classid);
	354	#ifdef CONFIG_NET_CLS_IND
	355	if (strlen(f->indev))
	356	RTA_PUT(skb, TCA_FW_INDEV, IFNAMSIZ, f->indev);
	357	#endif /* CONFIG_NET_CLS_IND */
	358
	359	if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0)
	360	goto rtattr_failure;
	361
	362	rta->rta_len = skb->tail - b;
	363
	364	if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
	365	goto rtattr_failure;
	366
	367	return skb->len;
	368
	369	rtattr_failure:
	370	skb_trim(skb, b - skb->data);
	371	return -1;
	372	}
	373
	374	static struct tcf_proto_ops cls_fw_ops = {
	375	.next = NULL,
	376	.kind = "fw",
	377	.classify = fw_classify,
	378	.init = fw_init,
	379	.destroy = fw_destroy,
	380	.get = fw_get,
	381	.put = fw_put,
382	.change = fw_change,
383	.delete = fw_delete,
384	.walk = fw_walk,
385	.dump = fw_dump,
386	.owner = THIS_MODULE,
387	};
388
389	static int __init init_fw(void)
390	{
391	return register_tcf_proto_ops(&cls_fw_ops);
392	}
393
394	static void __exit exit_fw(void)
395	{
396	unregister_tcf_proto_ops(&cls_fw_ops);
397	}
398
399	module_init(init_fw)
400	module_exit(exit_fw)
401	MODULE_LICENSE("GPL");