[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/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <net/netlink.h>
#include <net/act_api.h>
#include <net/pkt_cls.h>

#define HTSIZE 256

struct fw_head {
	u32			mask;
	struct fw_filter	*ht[HTSIZE];
};

struct fw_filter {
	struct fw_filter	*next;
	u32			id;
	struct tcf_result	res;
#ifdef CONFIG_NET_CLS_IND
	int			ifindex;
#endif /* CONFIG_NET_CLS_IND */
	struct tcf_exts		exts;
};

static u32 fw_hash(u32 handle)
{
	handle ^= (handle >> 16);
	handle ^= (handle >> 8);
	return handle % HTSIZE;
}

static int fw_classify(struct sk_buff *skb, const struct tcf_proto *tp,
			  struct tcf_result *res)
{
	struct fw_head *head = tp->root;
	struct fw_filter *f;
	int r;
	u32 id = skb->mark;

	if (head != NULL) {
		id &= head->mask;
		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->ifindex))
					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 = 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 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 = tp->root;
	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 = 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 const struct nla_policy fw_policy[TCA_FW_MAX + 1] = {
	[TCA_FW_CLASSID]	= { .type = NLA_U32 },
	[TCA_FW_INDEV]		= { .type = NLA_STRING, .len = IFNAMSIZ },
	[TCA_FW_MASK]		= { .type = NLA_U32 },
};

static int
fw_change_attrs(struct net *net, struct tcf_proto *tp, struct fw_filter *f,
	struct nlattr **tb, struct nlattr **tca, unsigned long base, bool ovr)
{
	struct fw_head *head = tp->root;
	struct tcf_exts e;
	u32 mask;
	int err;

	tcf_exts_init(&e, TCA_FW_ACT, TCA_FW_POLICE);
	err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
	if (err < 0)
		return err;

	if (tb[TCA_FW_CLASSID]) {
		f->res.classid = nla_get_u32(tb[TCA_FW_CLASSID]);
		tcf_bind_filter(tp, &f->res, base);
	}

#ifdef CONFIG_NET_CLS_IND
	if (tb[TCA_FW_INDEV]) {
		int ret;
		ret = tcf_change_indev(net, tb[TCA_FW_INDEV]);
		if (ret < 0) {
			err = ret;
			goto errout;
		}
		f->ifindex = ret;
	}
#endif /* CONFIG_NET_CLS_IND */

	err = -EINVAL;
	if (tb[TCA_FW_MASK]) {
		mask = nla_get_u32(tb[TCA_FW_MASK]);
		if (mask != head->mask)
			goto errout;
	} else if (head->mask != 0xFFFFFFFF)
		goto errout;

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

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

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

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

	err = nla_parse_nested(tb, TCA_FW_MAX, opt, fw_policy);
	if (err < 0)
		return err;

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

	if (!handle)
		return -EINVAL;

	if (head == NULL) {
		u32 mask = 0xFFFFFFFF;
		if (tb[TCA_FW_MASK])
			mask = nla_get_u32(tb[TCA_FW_MASK]);

		head = kzalloc(sizeof(struct fw_head), GFP_KERNEL);
		if (head == NULL)
			return -ENOBUFS;
		head->mask = mask;

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

	f = kzalloc(sizeof(struct fw_filter), GFP_KERNEL);
	if (f == NULL)
		return -ENOBUFS;

	tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE);
	f->id = handle;

	err = fw_change_attrs(net, tp, f, tb, tca, base, ovr);
	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:
	kfree(f);
	return err;
}

static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
	struct fw_head *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 net *net, struct tcf_proto *tp, unsigned long fh,
		   struct sk_buff *skb, struct tcmsg *t)
{
	struct fw_head *head = tp->root;
	struct fw_filter *f = (struct fw_filter *)fh;
	unsigned char *b = skb_tail_pointer(skb);
	struct nlattr *nest;

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

	t->tcm_handle = f->id;

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

	nest = nla_nest_start(skb, TCA_OPTIONS);
	if (nest == NULL)
		goto nla_put_failure;

	if (f->res.classid &&
	    nla_put_u32(skb, TCA_FW_CLASSID, f->res.classid))
		goto nla_put_failure;
#ifdef CONFIG_NET_CLS_IND
	if (f->ifindex) {
		struct net_device *dev;
		dev = __dev_get_by_index(net, f->ifindex);
		if (dev && nla_put_string(skb, TCA_FW_INDEV, dev->name))
			goto nla_put_failure;
	}
#endif /* CONFIG_NET_CLS_IND */
	if (head->mask != 0xFFFFFFFF &&
	    nla_put_u32(skb, TCA_FW_MASK, head->mask))
		goto nla_put_failure;

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

	nla_nest_end(skb, nest);

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

	return skb->len;

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

static struct tcf_proto_ops cls_fw_ops __read_mostly = {
	.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
1da177e4	21	#include <linux/module.h>
5a0e3ad6	22	#include <linux/slab.h>
1da177e4 LT	23	#include <linux/types.h>
1da177e4 LT	24	#include <linux/kernel.h>
1da177e4	25	#include <linux/string.h>
1da177e4	26	#include <linux/errno.h>
1da177e4	27	#include <linux/skbuff.h>
0ba48053	28	#include <net/netlink.h>
1da177e4 LT	29	#include <net/act_api.h>
	30	#include <net/pkt_cls.h>
	31
d37d8ac1	32	#define HTSIZE 256
c5c13faf	33
cc7ec456	34	struct fw_head {
d37d8ac1 ED	35	u32 mask;
d37d8ac1 ED	36	struct fw_filter *ht[HTSIZE];
1da177e4 LT	37	};
1da177e4 LT	38
cc7ec456	39	struct fw_filter {
1da177e4 LT	40	struct fw_filter *next;
	41	u32 id;
	42	struct tcf_result res;
	43	#ifdef CONFIG_NET_CLS_IND
2519a602	44	int ifindex;
1da177e4 LT	45	#endif /* CONFIG_NET_CLS_IND */
	46	struct tcf_exts exts;
	47	};
	48
d37d8ac1	49	static u32 fw_hash(u32 handle)
1da177e4	50	{
d37d8ac1 ED	51	handle ^= (handle >> 16);
	52	handle ^= (handle >> 8);
	53	return handle % HTSIZE;
1da177e4 LT	54	}
1da177e4 LT	55
dc7f9f6e	56	static int fw_classify(struct sk_buff skb, const struct tcf_proto tp,
1da177e4 LT	57	struct tcf_result *res)
1da177e4 LT	58	{
a8701a6c	59	struct fw_head *head = tp->root;
1da177e4 LT	60	struct fw_filter *f;
1da177e4 LT	61	int r;
5c804bfd	62	u32 id = skb->mark;
1da177e4 LT	63
1da177e4 LT	64	if (head != NULL) {
5c804bfd	65	id &= head->mask;
cc7ec456	66	for (f = head->ht[fw_hash(id)]; f; f = f->next) {
1da177e4 LT	67	if (f->id == id) {
	68	*res = f->res;
	69	#ifdef CONFIG_NET_CLS_IND
2519a602	70	if (!tcf_match_indev(skb, f->ifindex))
1da177e4 LT	71	continue;
	72	#endif /* CONFIG_NET_CLS_IND */
	73	r = tcf_exts_exec(skb, &f->exts, res);
	74	if (r < 0)
	75	continue;
	76
	77	return r;
	78	}
	79	}
	80	} else {
	81	/* old method */
cc7ec456 ED	82	if (id && (TC_H_MAJ(id) == 0 \|\|
cc7ec456 ED	83	!(TC_H_MAJ(id ^ tp->q->handle)))) {
1da177e4 LT	84	res->classid = id;
	85	res->class = 0;
	86	return 0;
	87	}
	88	}
	89
	90	return -1;
	91	}
	92
	93	static unsigned long fw_get(struct tcf_proto *tp, u32 handle)
	94	{
a8701a6c	95	struct fw_head *head = tp->root;
1da177e4 LT	96	struct fw_filter *f;
	97
	98	if (head == NULL)
	99	return 0;
	100
cc7ec456	101	for (f = head->ht[fw_hash(handle)]; f; f = f->next) {
1da177e4 LT	102	if (f->id == handle)
	103	return (unsigned long)f;
	104	}
	105	return 0;
	106	}
	107
	108	static void fw_put(struct tcf_proto *tp, unsigned long f)
	109	{
	110	}
	111
	112	static int fw_init(struct tcf_proto *tp)
	113	{
	114	return 0;
	115	}
	116
cc7ec456	117	static void fw_delete_filter(struct tcf_proto tp, struct fw_filter f)
1da177e4 LT	118	{
	119	tcf_unbind_filter(tp, &f->res);
	120	tcf_exts_destroy(tp, &f->exts);
	121	kfree(f);
	122	}
	123
	124	static void fw_destroy(struct tcf_proto *tp)
	125	{
47a1a1d4	126	struct fw_head *head = tp->root;
1da177e4 LT	127	struct fw_filter *f;
	128	int h;
	129
	130	if (head == NULL)
	131	return;
	132
cc7ec456 ED	133	for (h = 0; h < HTSIZE; h++) {
cc7ec456 ED	134	while ((f = head->ht[h]) != NULL) {
1da177e4 LT	135	head->ht[h] = f->next;
	136	fw_delete_filter(tp, f);
	137	}
	138	}
	139	kfree(head);
	140	}
	141
	142	static int fw_delete(struct tcf_proto *tp, unsigned long arg)
	143	{
a8701a6c	144	struct fw_head *head = tp->root;
cc7ec456	145	struct fw_filter f = (struct fw_filter )arg;
1da177e4 LT	146	struct fw_filter **fp;
	147
	148	if (head == NULL \|\| f == NULL)
	149	goto out;
	150
cc7ec456	151	for (fp = &head->ht[fw_hash(f->id)]; fp; fp = &(fp)->next) {
1da177e4 LT	152	if (*fp == f) {
	153	tcf_tree_lock(tp);
	154	*fp = f->next;
	155	tcf_tree_unlock(tp);
	156	fw_delete_filter(tp, f);
	157	return 0;
	158	}
	159	}
	160	out:
	161	return -EINVAL;
	162	}
	163
6fa8c014 PM	164	static const struct nla_policy fw_policy[TCA_FW_MAX + 1] = {
	165	[TCA_FW_CLASSID] = { .type = NLA_U32 },
	166	[TCA_FW_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ },
	167	[TCA_FW_MASK] = { .type = NLA_U32 },
	168	};
	169
1da177e4	170	static int
c1b52739	171	fw_change_attrs(struct net net, struct tcf_proto tp, struct fw_filter *f,
2f7ef2f8	172	struct nlattr tb, struct nlattr tca, unsigned long base, bool ovr)
1da177e4	173	{
a8701a6c	174	struct fw_head *head = tp->root;
1da177e4	175	struct tcf_exts e;
b4e9b520	176	u32 mask;
1da177e4 LT	177	int err;
1da177e4 LT	178
5da57f42	179	tcf_exts_init(&e, TCA_FW_ACT, TCA_FW_POLICE);
2f7ef2f8	180	err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
1da177e4 LT	181	if (err < 0)
	182	return err;
	183
add93b61	184	if (tb[TCA_FW_CLASSID]) {
1587bac4	185	f->res.classid = nla_get_u32(tb[TCA_FW_CLASSID]);
1da177e4 LT	186	tcf_bind_filter(tp, &f->res, base);
	187	}
	188
	189	#ifdef CONFIG_NET_CLS_IND
add93b61	190	if (tb[TCA_FW_INDEV]) {
2519a602 WC	191	int ret;
2519a602 WC	192	ret = tcf_change_indev(net, tb[TCA_FW_INDEV]);
722e47d7 WY	193	if (ret < 0) {
722e47d7 WY	194	err = ret;
1da177e4	195	goto errout;
722e47d7	196	}
2519a602	197	f->ifindex = ret;
1da177e4 LT	198	}
	199	#endif /* CONFIG_NET_CLS_IND */
	200
cb95ec62	201	err = -EINVAL;
add93b61	202	if (tb[TCA_FW_MASK]) {
1587bac4	203	mask = nla_get_u32(tb[TCA_FW_MASK]);
b4e9b520 PM	204	if (mask != head->mask)
	205	goto errout;
	206	} else if (head->mask != 0xFFFFFFFF)
	207	goto errout;
	208
1da177e4 LT	209	tcf_exts_change(tp, &f->exts, &e);
	210
	211	return 0;
	212	errout:
	213	tcf_exts_destroy(tp, &e);
	214	return err;
	215	}
	216
c1b52739	217	static int fw_change(struct net net, struct sk_buff in_skb,
af4c6641	218	struct tcf_proto *tp, unsigned long base,
1da177e4	219	u32 handle,
add93b61	220	struct nlattr **tca,
2f7ef2f8	221	unsigned long *arg, bool ovr)
1da177e4	222	{
a8701a6c	223	struct fw_head *head = tp->root;
1da177e4	224	struct fw_filter f = (struct fw_filter ) *arg;
add93b61 PM	225	struct nlattr *opt = tca[TCA_OPTIONS];
add93b61 PM	226	struct nlattr *tb[TCA_FW_MAX + 1];
1da177e4 LT	227	int err;
	228
	229	if (!opt)
	230	return handle ? -EINVAL : 0;
	231
6fa8c014	232	err = nla_parse_nested(tb, TCA_FW_MAX, opt, fw_policy);
cee63723 PM	233	if (err < 0)
cee63723 PM	234	return err;
1da177e4 LT	235
	236	if (f != NULL) {
	237	if (f->id != handle && handle)
	238	return -EINVAL;
2f7ef2f8	239	return fw_change_attrs(net, tp, f, tb, tca, base, ovr);
1da177e4 LT	240	}
	241
	242	if (!handle)
	243	return -EINVAL;
	244
	245	if (head == NULL) {
b4e9b520	246	u32 mask = 0xFFFFFFFF;
6fa8c014	247	if (tb[TCA_FW_MASK])
1587bac4	248	mask = nla_get_u32(tb[TCA_FW_MASK]);
b4e9b520	249
0da974f4	250	head = kzalloc(sizeof(struct fw_head), GFP_KERNEL);
1da177e4 LT	251	if (head == NULL)
1da177e4 LT	252	return -ENOBUFS;
b4e9b520	253	head->mask = mask;
1da177e4 LT	254
	255	tcf_tree_lock(tp);
	256	tp->root = head;
	257	tcf_tree_unlock(tp);
	258	}
	259
0da974f4	260	f = kzalloc(sizeof(struct fw_filter), GFP_KERNEL);
1da177e4 LT	261	if (f == NULL)
1da177e4 LT	262	return -ENOBUFS;
1da177e4	263
5da57f42	264	tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE);
1da177e4 LT	265	f->id = handle;
1da177e4 LT	266
2f7ef2f8	267	err = fw_change_attrs(net, tp, f, tb, tca, base, ovr);
1da177e4 LT	268	if (err < 0)
	269	goto errout;
	270
	271	f->next = head->ht[fw_hash(handle)];
	272	tcf_tree_lock(tp);
	273	head->ht[fw_hash(handle)] = f;
	274	tcf_tree_unlock(tp);
	275
	276	*arg = (unsigned long)f;
	277	return 0;
	278
	279	errout:
a51482bd	280	kfree(f);
1da177e4 LT	281	return err;
	282	}
	283
	284	static void fw_walk(struct tcf_proto tp, struct tcf_walker arg)
	285	{
a8701a6c	286	struct fw_head *head = tp->root;
1da177e4 LT	287	int h;
	288
	289	if (head == NULL)
	290	arg->stop = 1;
	291
	292	if (arg->stop)
	293	return;
	294
c5c13faf	295	for (h = 0; h < HTSIZE; h++) {
1da177e4 LT	296	struct fw_filter *f;
	297
	298	for (f = head->ht[h]; f; f = f->next) {
	299	if (arg->count < arg->skip) {
	300	arg->count++;
	301	continue;
	302	}
	303	if (arg->fn(tp, (unsigned long)f, arg) < 0) {
	304	arg->stop = 1;
	305	return;
	306	}
	307	arg->count++;
	308	}
	309	}
	310	}
	311
832d1d5b	312	static int fw_dump(struct net net, struct tcf_proto tp, unsigned long fh,
1da177e4 LT	313	struct sk_buff skb, struct tcmsg t)
1da177e4 LT	314	{
a8701a6c	315	struct fw_head *head = tp->root;
cc7ec456	316	struct fw_filter f = (struct fw_filter )fh;
27a884dc	317	unsigned char *b = skb_tail_pointer(skb);
4b3550ef	318	struct nlattr *nest;
1da177e4 LT	319
	320	if (f == NULL)
	321	return skb->len;
	322
	323	t->tcm_handle = f->id;
	324
	325	if (!f->res.classid && !tcf_exts_is_available(&f->exts))
	326	return skb->len;
	327
4b3550ef PM	328	nest = nla_nest_start(skb, TCA_OPTIONS);
	329	if (nest == NULL)
	330	goto nla_put_failure;
1da177e4	331
1b34ec43 DM	332	if (f->res.classid &&
	333	nla_put_u32(skb, TCA_FW_CLASSID, f->res.classid))
	334	goto nla_put_failure;
1da177e4	335	#ifdef CONFIG_NET_CLS_IND
2519a602 WC	336	if (f->ifindex) {
	337	struct net_device *dev;
	338	dev = __dev_get_by_index(net, f->ifindex);
	339	if (dev && nla_put_string(skb, TCA_FW_INDEV, dev->name))
	340	goto nla_put_failure;
	341	}
1da177e4	342	#endif /* CONFIG_NET_CLS_IND */
1b34ec43 DM	343	if (head->mask != 0xFFFFFFFF &&
	344	nla_put_u32(skb, TCA_FW_MASK, head->mask))
	345	goto nla_put_failure;
1da177e4	346
5da57f42	347	if (tcf_exts_dump(skb, &f->exts) < 0)
add93b61	348	goto nla_put_failure;
1da177e4	349
4b3550ef	350	nla_nest_end(skb, nest);
1da177e4	351
5da57f42	352	if (tcf_exts_dump_stats(skb, &f->exts) < 0)
add93b61	353	goto nla_put_failure;
1da177e4 LT	354
	355	return skb->len;
	356
add93b61	357	nla_put_failure:
dc5fc579	358	nlmsg_trim(skb, b);
1da177e4 LT	359	return -1;
	360	}
	361
2eb9d75c	362	static struct tcf_proto_ops cls_fw_ops __read_mostly = {
1da177e4 LT	363	.kind = "fw",
	364	.classify = fw_classify,
	365	.init = fw_init,
	366	.destroy = fw_destroy,
	367	.get = fw_get,
	368	.put = fw_put,
	369	.change = fw_change,
	370	.delete = fw_delete,
	371	.walk = fw_walk,
	372	.dump = fw_dump,
	373	.owner = THIS_MODULE,
	374	};
	375
	376	static int __init init_fw(void)
	377	{
	378	return register_tcf_proto_ops(&cls_fw_ops);
	379	}
	380
10297b99	381	static void __exit exit_fw(void)
1da177e4 LT	382	{
	383	unregister_tcf_proto_ops(&cls_fw_ops);
	384	}
	385
	386	module_init(init_fw)
	387	module_exit(exit_fw)
	388	MODULE_LICENSE("GPL");