[linux.git] / include / net / pkt_cls.h

#ifndef __NET_PKT_CLS_H
#define __NET_PKT_CLS_H

#include <linux/pkt_cls.h>
#include <net/sch_generic.h>
#include <net/act_api.h>

/* Basic packet classifier frontend definitions. */

struct tcf_walker {
	int	stop;
	int	skip;
	int	count;
	int	(*fn)(struct tcf_proto *, unsigned long node, struct tcf_walker *);
};

extern int register_tcf_proto_ops(struct tcf_proto_ops *ops);
extern int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);

static inline unsigned long
__cls_set_class(unsigned long *clp, unsigned long cl)
{
	unsigned long old_cl;
 
	old_cl = *clp;
	*clp = cl;
	return old_cl;
}

static inline unsigned long
cls_set_class(struct tcf_proto *tp, unsigned long *clp, 
	unsigned long cl)
{
	unsigned long old_cl;
	
	tcf_tree_lock(tp);
	old_cl = __cls_set_class(clp, cl);
	tcf_tree_unlock(tp);
 
	return old_cl;
}

static inline void
tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base)
{
	unsigned long cl;

	cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, r->classid);
	cl = cls_set_class(tp, &r->class, cl);
	if (cl)
		tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
}

static inline void
tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
{
	unsigned long cl;

	if ((cl = __cls_set_class(&r->class, 0)) != 0)
		tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
}

struct tcf_exts {
#ifdef CONFIG_NET_CLS_ACT
	struct tc_action *action;
#endif
};

/* Map to export classifier specific extension TLV types to the
 * generic extensions API. Unsupported extensions must be set to 0.
 */
struct tcf_ext_map {
	int action;
	int police;
};

/**
 * tcf_exts_is_predicative - check if a predicative extension is present
 * @exts: tc filter extensions handle
 *
 * Returns 1 if a predicative extension is present, i.e. an extension which
 * might cause further actions and thus overrule the regular tcf_result.
 */
static inline int
tcf_exts_is_predicative(struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
	return !!exts->action;
#else
	return 0;
#endif
}

/**
 * tcf_exts_is_available - check if at least one extension is present
 * @exts: tc filter extensions handle
 *
 * Returns 1 if at least one extension is present.
 */
static inline int
tcf_exts_is_available(struct tcf_exts *exts)
{
	/* All non-predicative extensions must be added here. */
	return tcf_exts_is_predicative(exts);
}

/**
 * tcf_exts_exec - execute tc filter extensions
 * @skb: socket buffer
 * @exts: tc filter extensions handle
 * @res: desired result
 *
 * Executes all configured extensions. Returns 0 on a normal execution,
 * a negative number if the filter must be considered unmatched or
 * a positive action code (TC_ACT_*) which must be returned to the
 * underlying layer.
 */
static inline int
tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
	       struct tcf_result *res)
{
#ifdef CONFIG_NET_CLS_ACT
	if (exts->action)
		return tcf_action_exec(skb, exts->action, res);
#endif
	return 0;
}

extern int tcf_exts_validate(struct tcf_proto *tp, struct nlattr **tb,
	                     struct nlattr *rate_tlv, struct tcf_exts *exts,
	                     const struct tcf_ext_map *map);
extern void tcf_exts_destroy(struct tcf_proto *tp, struct tcf_exts *exts);
extern void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst,
	                     struct tcf_exts *src);
extern int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
	                 const struct tcf_ext_map *map);
extern int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts,
	                       const struct tcf_ext_map *map);

/**
 * struct tcf_pkt_info - packet information
 */
struct tcf_pkt_info {
	unsigned char *		ptr;
	int			nexthdr;
};

#ifdef CONFIG_NET_EMATCH

struct tcf_ematch_ops;

/**
 * struct tcf_ematch - extended match (ematch)
 * 
 * @matchid: identifier to allow userspace to reidentify a match
 * @flags: flags specifying attributes and the relation to other matches
 * @ops: the operations lookup table of the corresponding ematch module
 * @datalen: length of the ematch specific configuration data
 * @data: ematch specific data
 */
struct tcf_ematch {
	struct tcf_ematch_ops * ops;
	unsigned long		data;
	unsigned int		datalen;
	u16			matchid;
	u16			flags;
};

static inline int tcf_em_is_container(struct tcf_ematch *em)
{
	return !em->ops;
}

static inline int tcf_em_is_simple(struct tcf_ematch *em)
{
	return em->flags & TCF_EM_SIMPLE;
}

static inline int tcf_em_is_inverted(struct tcf_ematch *em)
{
	return em->flags & TCF_EM_INVERT;
}

static inline int tcf_em_last_match(struct tcf_ematch *em)
{
	return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
}

static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
{
	if (tcf_em_last_match(em))
		return 1;

	if (result == 0 && em->flags & TCF_EM_REL_AND)
		return 1;

	if (result != 0 && em->flags & TCF_EM_REL_OR)
		return 1;

	return 0;
}
	
/**
 * struct tcf_ematch_tree - ematch tree handle
 *
 * @hdr: ematch tree header supplied by userspace
 * @matches: array of ematches
 */
struct tcf_ematch_tree {
	struct tcf_ematch_tree_hdr hdr;
	struct tcf_ematch *	matches;
	
};

/**
 * struct tcf_ematch_ops - ematch module operations
 * 
 * @kind: identifier (kind) of this ematch module
 * @datalen: length of expected configuration data (optional)
 * @change: called during validation (optional)
 * @match: called during ematch tree evaluation, must return 1/0
 * @destroy: called during destroyage (optional)
 * @dump: called during dumping process (optional)
 * @owner: owner, must be set to THIS_MODULE
 * @link: link to previous/next ematch module (internal use)
 */
struct tcf_ematch_ops {
	int			kind;
	int			datalen;
	int			(*change)(struct tcf_proto *, void *,
					  int, struct tcf_ematch *);
	int			(*match)(struct sk_buff *, struct tcf_ematch *,
					 struct tcf_pkt_info *);
	void			(*destroy)(struct tcf_proto *,
					   struct tcf_ematch *);
	int			(*dump)(struct sk_buff *, struct tcf_ematch *);
	struct module		*owner;
	struct list_head	link;
};

extern int tcf_em_register(struct tcf_ematch_ops *);
extern void tcf_em_unregister(struct tcf_ematch_ops *);
extern int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *,
				struct tcf_ematch_tree *);
extern void tcf_em_tree_destroy(struct tcf_proto *, struct tcf_ematch_tree *);
extern int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
extern int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
			       struct tcf_pkt_info *);

/**
 * tcf_em_tree_change - replace ematch tree of a running classifier
 *
 * @tp: classifier kind handle
 * @dst: destination ematch tree variable
 * @src: source ematch tree (temporary tree from tcf_em_tree_validate)
 *
 * This functions replaces the ematch tree in @dst with the ematch
 * tree in @src. The classifier in charge of the ematch tree may be
 * running.
 */
static inline void tcf_em_tree_change(struct tcf_proto *tp,
				      struct tcf_ematch_tree *dst,
				      struct tcf_ematch_tree *src)
{
	tcf_tree_lock(tp);
	memcpy(dst, src, sizeof(*dst));
	tcf_tree_unlock(tp);
}

/**
 * tcf_em_tree_match - evaulate an ematch tree
 *
 * @skb: socket buffer of the packet in question
 * @tree: ematch tree to be used for evaluation
 * @info: packet information examined by classifier
 *
 * This function matches @skb against the ematch tree in @tree by going
 * through all ematches respecting their logic relations returning
 * as soon as the result is obvious.
 *
 * Returns 1 if the ematch tree as-one matches, no ematches are configured
 * or ematch is not enabled in the kernel, otherwise 0 is returned.
 */
static inline int tcf_em_tree_match(struct sk_buff *skb,
				    struct tcf_ematch_tree *tree,
				    struct tcf_pkt_info *info)
{
	if (tree->hdr.nmatches)
		return __tcf_em_tree_match(skb, tree, info);
	else
		return 1;
}

#define MODULE_ALIAS_TCF_EMATCH(kind)	MODULE_ALIAS("ematch-kind-" __stringify(kind))

#else /* CONFIG_NET_EMATCH */

struct tcf_ematch_tree {
};

#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
#define tcf_em_tree_destroy(tp, t) do { (void)(t); } while(0)
#define tcf_em_tree_dump(skb, t, tlv) (0)
#define tcf_em_tree_change(tp, dst, src) do { } while(0)
#define tcf_em_tree_match(skb, t, info) ((void)(info), 1)

#endif /* CONFIG_NET_EMATCH */

static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
{
	switch (layer) {
		case TCF_LAYER_LINK:
			return skb->data;
		case TCF_LAYER_NETWORK:
			return skb_network_header(skb);
		case TCF_LAYER_TRANSPORT:
			return skb_transport_header(skb);
	}

	return NULL;
}

static inline int tcf_valid_offset(const struct sk_buff *skb,
				   const unsigned char *ptr, const int len)
{
	return likely((ptr + len) <= skb_tail_pointer(skb) &&
		      ptr >= skb->head &&
		      (ptr <= (ptr + len)));
}

#ifdef CONFIG_NET_CLS_IND
#include <net/net_namespace.h>

static inline int
tcf_change_indev(struct tcf_proto *tp, char *indev, struct nlattr *indev_tlv)
{
	if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ)
		return -EINVAL;
	return 0;
}

static inline int
tcf_match_indev(struct sk_buff *skb, char *indev)
{
	struct net_device *dev;

	if (indev[0]) {
		if  (!skb->skb_iif)
			return 0;
		dev = __dev_get_by_index(dev_net(skb->dev), skb->skb_iif);
		if (!dev || strcmp(indev, dev->name))
			return 0;
	}

	return 1;
}
#endif /* CONFIG_NET_CLS_IND */

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __NET_PKT_CLS_H
	2	#define __NET_PKT_CLS_H
	3
	4	#include <linux/pkt_cls.h>
	5	#include <net/sch_generic.h>
	6	#include <net/act_api.h>
	7
	8	/* Basic packet classifier frontend definitions. */
	9
fd2c3ef7	10	struct tcf_walker {
1da177e4 LT	11	int stop;
	12	int skip;
	13	int count;
	14	int (fn)(struct tcf_proto , unsigned long node, struct tcf_walker *);
	15	};
	16
	17	extern int register_tcf_proto_ops(struct tcf_proto_ops *ops);
	18	extern int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
	19
	20	static inline unsigned long
	21	__cls_set_class(unsigned long *clp, unsigned long cl)
	22	{
	23	unsigned long old_cl;
	24
	25	old_cl = *clp;
	26	*clp = cl;
	27	return old_cl;
	28	}
	29
	30	static inline unsigned long
	31	cls_set_class(struct tcf_proto tp, unsigned long clp,
	32	unsigned long cl)
	33	{
	34	unsigned long old_cl;
	35
	36	tcf_tree_lock(tp);
	37	old_cl = __cls_set_class(clp, cl);
	38	tcf_tree_unlock(tp);
	39
	40	return old_cl;
	41	}
	42
	43	static inline void
	44	tcf_bind_filter(struct tcf_proto tp, struct tcf_result r, unsigned long base)
	45	{
	46	unsigned long cl;
	47
	48	cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, r->classid);
	49	cl = cls_set_class(tp, &r->class, cl);
	50	if (cl)
	51	tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
	52	}
	53
	54	static inline void
	55	tcf_unbind_filter(struct tcf_proto tp, struct tcf_result r)
	56	{
	57	unsigned long cl;
	58
	59	if ((cl = __cls_set_class(&r->class, 0)) != 0)
	60	tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
	61	}
	62
fd2c3ef7	63	struct tcf_exts {
1da177e4 LT	64	#ifdef CONFIG_NET_CLS_ACT
1da177e4 LT	65	struct tc_action *action;
1da177e4 LT	66	#endif
	67	};
	68
	69	/* Map to export classifier specific extension TLV types to the
	70	* generic extensions API. Unsupported extensions must be set to 0.
	71	*/
fd2c3ef7	72	struct tcf_ext_map {
1da177e4 LT	73	int action;
	74	int police;
	75	};
	76
	77	/**
	78	* tcf_exts_is_predicative - check if a predicative extension is present
	79	* @exts: tc filter extensions handle
	80	*
	81	* Returns 1 if a predicative extension is present, i.e. an extension which
	82	* might cause further actions and thus overrule the regular tcf_result.
	83	*/
	84	static inline int
	85	tcf_exts_is_predicative(struct tcf_exts *exts)
	86	{
	87	#ifdef CONFIG_NET_CLS_ACT
	88	return !!exts->action;
1da177e4 LT	89	#else
	90	return 0;
	91	#endif
	92	}
	93
	94	/**
	95	* tcf_exts_is_available - check if at least one extension is present
	96	* @exts: tc filter extensions handle
	97	*
	98	* Returns 1 if at least one extension is present.
	99	*/
	100	static inline int
	101	tcf_exts_is_available(struct tcf_exts *exts)
	102	{
	103	/* All non-predicative extensions must be added here. */
	104	return tcf_exts_is_predicative(exts);
	105	}
	106
	107	/**
	108	* tcf_exts_exec - execute tc filter extensions
	109	* @skb: socket buffer
	110	* @exts: tc filter extensions handle
	111	* @res: desired result
	112	*
	113	* Executes all configured extensions. Returns 0 on a normal execution,
	114	* a negative number if the filter must be considered unmatched or
	115	* a positive action code (TC_ACT_*) which must be returned to the
	116	* underlying layer.
	117	*/
	118	static inline int
	119	tcf_exts_exec(struct sk_buff skb, struct tcf_exts exts,
	120	struct tcf_result *res)
	121	{
	122	#ifdef CONFIG_NET_CLS_ACT
	123	if (exts->action)
	124	return tcf_action_exec(skb, exts->action, res);
1da177e4	125	#endif
1da177e4 LT	126	return 0;
	127	}
	128
add93b61 PM	129	extern int tcf_exts_validate(struct tcf_proto tp, struct nlattr *tb,
add93b61 PM	130	struct nlattr rate_tlv, struct tcf_exts exts,
5239008b	131	const struct tcf_ext_map *map);
1da177e4 LT	132	extern void tcf_exts_destroy(struct tcf_proto tp, struct tcf_exts exts);
	133	extern void tcf_exts_change(struct tcf_proto tp, struct tcf_exts dst,
	134	struct tcf_exts *src);
	135	extern int tcf_exts_dump(struct sk_buff skb, struct tcf_exts exts,
5239008b	136	const struct tcf_ext_map *map);
1da177e4	137	extern int tcf_exts_dump_stats(struct sk_buff skb, struct tcf_exts exts,
5239008b	138	const struct tcf_ext_map *map);
1da177e4 LT	139
	140	/**
	141	* struct tcf_pkt_info - packet information
	142	*/
fd2c3ef7	143	struct tcf_pkt_info {
1da177e4 LT	144	unsigned char * ptr;
	145	int nexthdr;
	146	};
	147
	148	#ifdef CONFIG_NET_EMATCH
	149
	150	struct tcf_ematch_ops;
	151
	152	/**
	153	* struct tcf_ematch - extended match (ematch)
	154	*
	155	* @matchid: identifier to allow userspace to reidentify a match
	156	* @flags: flags specifying attributes and the relation to other matches
	157	* @ops: the operations lookup table of the corresponding ematch module
	158	* @datalen: length of the ematch specific configuration data
	159	* @data: ematch specific data
	160	*/
fd2c3ef7	161	struct tcf_ematch {
1da177e4 LT	162	struct tcf_ematch_ops * ops;
	163	unsigned long data;
	164	unsigned int datalen;
	165	u16 matchid;
	166	u16 flags;
	167	};
	168
	169	static inline int tcf_em_is_container(struct tcf_ematch *em)
	170	{
	171	return !em->ops;
	172	}
	173
	174	static inline int tcf_em_is_simple(struct tcf_ematch *em)
	175	{
	176	return em->flags & TCF_EM_SIMPLE;
	177	}
	178
	179	static inline int tcf_em_is_inverted(struct tcf_ematch *em)
	180	{
	181	return em->flags & TCF_EM_INVERT;
	182	}
	183
	184	static inline int tcf_em_last_match(struct tcf_ematch *em)
	185	{
	186	return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
	187	}
	188
	189	static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
	190	{
	191	if (tcf_em_last_match(em))
	192	return 1;
	193
	194	if (result == 0 && em->flags & TCF_EM_REL_AND)
	195	return 1;
	196
	197	if (result != 0 && em->flags & TCF_EM_REL_OR)
	198	return 1;
	199
	200	return 0;
	201	}
	202
	203	/**
	204	* struct tcf_ematch_tree - ematch tree handle
	205	*
	206	* @hdr: ematch tree header supplied by userspace
	207	* @matches: array of ematches
	208	*/
fd2c3ef7	209	struct tcf_ematch_tree {
1da177e4 LT	210	struct tcf_ematch_tree_hdr hdr;
	211	struct tcf_ematch * matches;
	212
	213	};
	214
	215	/**
	216	* struct tcf_ematch_ops - ematch module operations
	217	*
	218	* @kind: identifier (kind) of this ematch module
	219	* @datalen: length of expected configuration data (optional)
	220	* @change: called during validation (optional)
	221	* @match: called during ematch tree evaluation, must return 1/0
	222	* @destroy: called during destroyage (optional)
	223	* @dump: called during dumping process (optional)
	224	* @owner: owner, must be set to THIS_MODULE
	225	* @link: link to previous/next ematch module (internal use)
	226	*/
fd2c3ef7	227	struct tcf_ematch_ops {
1da177e4 LT	228	int kind;
	229	int datalen;
	230	int (change)(struct tcf_proto , void *,
	231	int, struct tcf_ematch *);
	232	int (match)(struct sk_buff , struct tcf_ematch *,
	233	struct tcf_pkt_info *);
	234	void (destroy)(struct tcf_proto ,
	235	struct tcf_ematch *);
	236	int (dump)(struct sk_buff , struct tcf_ematch *);
	237	struct module *owner;
	238	struct list_head link;
	239	};
	240
	241	extern int tcf_em_register(struct tcf_ematch_ops *);
4d24b52a	242	extern void tcf_em_unregister(struct tcf_ematch_ops *);
add93b61	243	extern int tcf_em_tree_validate(struct tcf_proto , struct nlattr ,
1da177e4 LT	244	struct tcf_ematch_tree *);
	245	extern void tcf_em_tree_destroy(struct tcf_proto , struct tcf_ematch_tree );
	246	extern int tcf_em_tree_dump(struct sk_buff , struct tcf_ematch_tree , int);
	247	extern int __tcf_em_tree_match(struct sk_buff , struct tcf_ematch_tree ,
	248	struct tcf_pkt_info *);
	249
	250	/**
	251	* tcf_em_tree_change - replace ematch tree of a running classifier
	252	*
	253	* @tp: classifier kind handle
	254	* @dst: destination ematch tree variable
	255	* @src: source ematch tree (temporary tree from tcf_em_tree_validate)
	256	*
	257	* This functions replaces the ematch tree in @dst with the ematch
	258	* tree in @src. The classifier in charge of the ematch tree may be
	259	* running.
	260	*/
	261	static inline void tcf_em_tree_change(struct tcf_proto *tp,
	262	struct tcf_ematch_tree *dst,
	263	struct tcf_ematch_tree *src)
	264	{
	265	tcf_tree_lock(tp);
	266	memcpy(dst, src, sizeof(*dst));
	267	tcf_tree_unlock(tp);
	268	}
	269
	270	/**
	271	* tcf_em_tree_match - evaulate an ematch tree
	272	*
	273	* @skb: socket buffer of the packet in question
	274	* @tree: ematch tree to be used for evaluation
	275	* @info: packet information examined by classifier
	276	*
	277	* This function matches @skb against the ematch tree in @tree by going
	278	* through all ematches respecting their logic relations returning
	279	* as soon as the result is obvious.
	280	*
	281	* Returns 1 if the ematch tree as-one matches, no ematches are configured
	282	* or ematch is not enabled in the kernel, otherwise 0 is returned.
	283	*/
	284	static inline int tcf_em_tree_match(struct sk_buff *skb,
	285	struct tcf_ematch_tree *tree,
	286	struct tcf_pkt_info *info)
	287	{
	288	if (tree->hdr.nmatches)
	289	return __tcf_em_tree_match(skb, tree, info);
	290	else
	291	return 1;
	292	}
	293
db3d99c0 PM	294	#define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind))
db3d99c0 PM	295
1da177e4 LT	296	#else /* CONFIG_NET_EMATCH */
1da177e4 LT	297
fd2c3ef7	298	struct tcf_ematch_tree {
1da177e4 LT	299	};
	300
	301	#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
	302	#define tcf_em_tree_destroy(tp, t) do { (void)(t); } while(0)
	303	#define tcf_em_tree_dump(skb, t, tlv) (0)
	304	#define tcf_em_tree_change(tp, dst, src) do { } while(0)
	305	#define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
	306
	307	#endif /* CONFIG_NET_EMATCH */
	308
	309	static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
	310	{
	311	switch (layer) {
	312	case TCF_LAYER_LINK:
	313	return skb->data;
	314	case TCF_LAYER_NETWORK:
d56f90a7	315	return skb_network_header(skb);
1da177e4	316	case TCF_LAYER_TRANSPORT:
9c70220b	317	return skb_transport_header(skb);
1da177e4 LT	318	}
	319
	320	return NULL;
	321	}
	322
eddc9ec5 ACM	323	static inline int tcf_valid_offset(const struct sk_buff *skb,
eddc9ec5 ACM	324	const unsigned char *ptr, const int len)
1da177e4	325	{
da521b2c DM	326	return likely((ptr + len) <= skb_tail_pointer(skb) &&
	327	ptr >= skb->head &&
	328	(ptr <= (ptr + len)));
1da177e4 LT	329	}
	330
	331	#ifdef CONFIG_NET_CLS_IND
0eeb8ffc DL	332	#include <net/net_namespace.h>
0eeb8ffc DL	333
1da177e4	334	static inline int
add93b61	335	tcf_change_indev(struct tcf_proto tp, char indev, struct nlattr *indev_tlv)
1da177e4	336	{
add93b61	337	if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ)
1da177e4 LT	338	return -EINVAL;
	339	return 0;
	340	}
	341
	342	static inline int
	343	tcf_match_indev(struct sk_buff skb, char indev)
	344	{
c01003c2 PM	345	struct net_device *dev;
c01003c2 PM	346
86e65da9	347	if (indev[0]) {
8964be4a	348	if (!skb->skb_iif)
1da177e4	349	return 0;
8964be4a	350	dev = __dev_get_by_index(dev_net(skb->dev), skb->skb_iif);
c01003c2	351	if (!dev \|\| strcmp(indev, dev->name))
1da177e4 LT	352	return 0;
	353	}
	354
	355	return 1;
	356	}
	357	#endif /* CONFIG_NET_CLS_IND */
	358
	359	#endif