[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / netfilter / x_tables.h

#ifndef _X_TABLES_H
#define _X_TABLES_H

#define XT_FUNCTION_MAXNAMELEN 30
#define XT_TABLE_MAXNAMELEN 32

struct xt_entry_match
{
	union {
		struct {
			u_int16_t match_size;

			/* Used by userspace */
			char name[XT_FUNCTION_MAXNAMELEN-1];

			u_int8_t revision;
		} user;
		struct {
			u_int16_t match_size;

			/* Used inside the kernel */
			struct xt_match *match;
		} kernel;

		/* Total length */
		u_int16_t match_size;
	} u;

	unsigned char data[0];
};

struct xt_entry_target
{
	union {
		struct {
			u_int16_t target_size;

			/* Used by userspace */
			char name[XT_FUNCTION_MAXNAMELEN-1];

			u_int8_t revision;
		} user;
		struct {
			u_int16_t target_size;

			/* Used inside the kernel */
			struct xt_target *target;
		} kernel;

		/* Total length */
		u_int16_t target_size;
	} u;

	unsigned char data[0];
};

struct xt_standard_target
{
	struct xt_entry_target target;
	int verdict;
};

/* The argument to IPT_SO_GET_REVISION_*.  Returns highest revision
 * kernel supports, if >= revision. */
struct xt_get_revision
{
	char name[XT_FUNCTION_MAXNAMELEN-1];

	u_int8_t revision;
};

/* CONTINUE verdict for targets */
#define XT_CONTINUE 0xFFFFFFFF

/* For standard target */
#define XT_RETURN (-NF_REPEAT - 1)

/* this is a dummy structure to find out the alignment requirement for a struct
 * containing all the fundamental data types that are used in ipt_entry,
 * ip6t_entry and arpt_entry.  This sucks, and it is a hack.  It will be my
 * personal pleasure to remove it -HW
 */
struct _xt_align
{
	u_int8_t u8;
	u_int16_t u16;
	u_int32_t u32;
	u_int64_t u64;
};

#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) 	\
			& ~(__alignof__(struct _xt_align)-1))

/* Standard return verdict, or do jump. */
#define XT_STANDARD_TARGET ""
/* Error verdict. */
#define XT_ERROR_TARGET "ERROR"

/*
 * New IP firewall options for [gs]etsockopt at the RAW IP level.
 * Unlike BSD Linux inherits IP options so you don't have to use a raw
 * socket for this. Instead we check rights in the calls. */
#define XT_BASE_CTL		64	/* base for firewall socket options */

#define XT_SO_SET_REPLACE	(XT_BASE_CTL)
#define XT_SO_SET_ADD_COUNTERS	(XT_BASE_CTL + 1)
#define XT_SO_SET_MAX		XT_SO_SET_ADD_COUNTERS

#define XT_SO_GET_INFO			(XT_BASE_CTL)
#define XT_SO_GET_ENTRIES		(XT_BASE_CTL + 1)
#define XT_SO_GET_REVISION_MATCH	(XT_BASE_CTL + 2)
#define XT_SO_GET_REVISION_TARGET	(XT_BASE_CTL + 3)
#define XT_SO_GET_MAX			XT_SO_GET_REVISION_TARGET

#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
#define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)

struct xt_counters
{
	u_int64_t pcnt, bcnt;			/* Packet and byte counters */
};

/* The argument to IPT_SO_ADD_COUNTERS. */
struct xt_counters_info
{
	/* Which table. */
	char name[XT_TABLE_MAXNAMELEN];

	unsigned int num_counters;

	/* The counters (actually `number' of these). */
	struct xt_counters counters[0];
};

#define XT_INV_PROTO		0x40	/* Invert the sense of PROTO. */

#ifdef __KERNEL__

#include <linux/netdevice.h>

struct xt_match
{
	struct list_head list;

	const char name[XT_FUNCTION_MAXNAMELEN-1];

	/* Return true or false: return FALSE and set *hotdrop = 1 to
           force immediate packet drop. */
	/* Arguments changed since 2.6.9, as this must now handle
	   non-linear skb, using skb_header_pointer and
	   skb_ip_make_writable. */
	int (*match)(const struct sk_buff *skb,
		     const struct net_device *in,
		     const struct net_device *out,
		     const struct xt_match *match,
		     const void *matchinfo,
		     int offset,
		     unsigned int protoff,
		     int *hotdrop);

	/* Called when user tries to insert an entry of this type. */
	/* Should return true or false. */
	int (*checkentry)(const char *tablename,
			  const void *ip,
			  const struct xt_match *match,
			  void *matchinfo,
			  unsigned int hook_mask);

	/* Called when entry of this type deleted. */
	void (*destroy)(const struct xt_match *match, void *matchinfo);

	/* Called when userspace align differs from kernel space one */
	void (*compat_from_user)(void *dst, void *src);
	int (*compat_to_user)(void __user *dst, void *src);

	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	struct module *me;

	/* Free to use by each match */
	unsigned long data;

	char *table;
	unsigned int matchsize;
	unsigned int compatsize;
	unsigned int hooks;
	unsigned short proto;

	unsigned short family;
	u_int8_t revision;
};

/* Registration hooks for targets. */
struct xt_target
{
	struct list_head list;

	const char name[XT_FUNCTION_MAXNAMELEN-1];

	/* Returns verdict. Argument order changed since 2.6.9, as this
	   must now handle non-linear skbs, using skb_copy_bits and
	   skb_ip_make_writable. */
	unsigned int (*target)(struct sk_buff **pskb,
			       const struct net_device *in,
			       const struct net_device *out,
			       unsigned int hooknum,
			       const struct xt_target *target,
			       const void *targinfo);

	/* Called when user tries to insert an entry of this type:
           hook_mask is a bitmask of hooks from which it can be
           called. */
	/* Should return true or false. */
	int (*checkentry)(const char *tablename,
			  const void *entry,
			  const struct xt_target *target,
			  void *targinfo,
			  unsigned int hook_mask);

	/* Called when entry of this type deleted. */
	void (*destroy)(const struct xt_target *target, void *targinfo);

	/* Called when userspace align differs from kernel space one */
	void (*compat_from_user)(void *dst, void *src);
	int (*compat_to_user)(void __user *dst, void *src);

	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	struct module *me;

	char *table;
	unsigned int targetsize;
	unsigned int compatsize;
	unsigned int hooks;
	unsigned short proto;

	unsigned short family;
	u_int8_t revision;
};

/* Furniture shopping... */
struct xt_table
{
	struct list_head list;

	/* A unique name... */
	char name[XT_TABLE_MAXNAMELEN];

	/* What hooks you will enter on */
	unsigned int valid_hooks;

	/* Lock for the curtain */
	rwlock_t lock;

	/* Man behind the curtain... */
	//struct ip6t_table_info *private;
	void *private;

	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	struct module *me;

	int af;		/* address/protocol family */
};

#include <linux/netfilter_ipv4.h>

/* The table itself */
struct xt_table_info
{
	/* Size per table */
	unsigned int size;
	/* Number of entries: FIXME. --RR */
	unsigned int number;
	/* Initial number of entries. Needed for module usage count */
	unsigned int initial_entries;

	/* Entry points and underflows */
	unsigned int hook_entry[NF_IP_NUMHOOKS];
	unsigned int underflow[NF_IP_NUMHOOKS];

	/* ipt_entry tables: one per CPU */
	char *entries[NR_CPUS];
};

extern int xt_register_target(struct xt_target *target);
extern void xt_unregister_target(struct xt_target *target);
extern int xt_register_targets(struct xt_target *target, unsigned int n);
extern void xt_unregister_targets(struct xt_target *target, unsigned int n);

extern int xt_register_match(struct xt_match *target);
extern void xt_unregister_match(struct xt_match *target);
extern int xt_register_matches(struct xt_match *match, unsigned int n);
extern void xt_unregister_matches(struct xt_match *match, unsigned int n);

extern int xt_check_match(const struct xt_match *match, unsigned short family,
			  unsigned int size, const char *table, unsigned int hook,
			  unsigned short proto, int inv_proto);
extern int xt_check_target(const struct xt_target *target, unsigned short family,
			   unsigned int size, const char *table, unsigned int hook,
			   unsigned short proto, int inv_proto);

extern int xt_register_table(struct xt_table *table,
			     struct xt_table_info *bootstrap,
			     struct xt_table_info *newinfo);
extern void *xt_unregister_table(struct xt_table *table);

extern struct xt_table_info *xt_replace_table(struct xt_table *table,
					      unsigned int num_counters,
					      struct xt_table_info *newinfo,
					      int *error);

extern struct xt_match *xt_find_match(int af, const char *name, u8 revision);
extern struct xt_target *xt_find_target(int af, const char *name, u8 revision);
extern struct xt_target *xt_request_find_target(int af, const char *name, 
						u8 revision);
extern int xt_find_revision(int af, const char *name, u8 revision, int target,
			    int *err);

extern struct xt_table *xt_find_table_lock(int af, const char *name);
extern void xt_table_unlock(struct xt_table *t);

extern int xt_proto_init(int af);
extern void xt_proto_fini(int af);

extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
extern void xt_free_table_info(struct xt_table_info *info);

#ifdef CONFIG_COMPAT
#include <net/compat.h>

struct compat_xt_entry_match
{
	union {
		struct {
			u_int16_t match_size;
			char name[XT_FUNCTION_MAXNAMELEN - 1];
			u_int8_t revision;
		} user;
		struct {
			u_int16_t match_size;
			compat_uptr_t match;
		} kernel;
		u_int16_t match_size;
	} u;
	unsigned char data[0];
};

struct compat_xt_entry_target
{
	union {
		struct {
			u_int16_t target_size;
			char name[XT_FUNCTION_MAXNAMELEN - 1];
			u_int8_t revision;
		} user;
		struct {
			u_int16_t target_size;
			compat_uptr_t target;
		} kernel;
		u_int16_t target_size;
	} u;
	unsigned char data[0];
};

/* FIXME: this works only on 32 bit tasks
 * need to change whole approach in order to calculate align as function of
 * current task alignment */

struct compat_xt_counters
{
#if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
	u_int32_t cnt[4];
#else
	u_int64_t cnt[2];
#endif
};

struct compat_xt_counters_info
{
	char name[XT_TABLE_MAXNAMELEN];
	compat_uint_t num_counters;
	struct compat_xt_counters counters[0];
};

#define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \
		& ~(__alignof__(struct compat_xt_counters)-1))

extern void xt_compat_lock(int af);
extern void xt_compat_unlock(int af);

extern int xt_compat_match_offset(struct xt_match *match);
extern void xt_compat_match_from_user(struct xt_entry_match *m,
				      void **dstptr, int *size);
extern int xt_compat_match_to_user(struct xt_entry_match *m,
				   void * __user *dstptr, int *size);

extern int xt_compat_target_offset(struct xt_target *target);
extern void xt_compat_target_from_user(struct xt_entry_target *t,
				       void **dstptr, int *size);
extern int xt_compat_target_to_user(struct xt_entry_target *t,
				    void * __user *dstptr, int *size);

#endif /* CONFIG_COMPAT */
#endif /* __KERNEL__ */

#endif /* _X_TABLES_H */
Commit	Line	Data
2e4e6a17 HW	1	#ifndef _X_TABLES_H
	2	#define _X_TABLES_H
	3
	4	#define XT_FUNCTION_MAXNAMELEN 30
	5	#define XT_TABLE_MAXNAMELEN 32
	6
1e30a014 DM	7	struct xt_entry_match
	8	{
	9	union {
	10	struct {
	11	u_int16_t match_size;
	12
	13	/* Used by userspace */
	14	char name[XT_FUNCTION_MAXNAMELEN-1];
	15
	16	u_int8_t revision;
	17	} user;
	18	struct {
	19	u_int16_t match_size;
	20
	21	/* Used inside the kernel */
	22	struct xt_match *match;
	23	} kernel;
	24
	25	/* Total length */
	26	u_int16_t match_size;
	27	} u;
	28
	29	unsigned char data[0];
	30	};
	31
	32	struct xt_entry_target
	33	{
	34	union {
	35	struct {
	36	u_int16_t target_size;
	37
	38	/* Used by userspace */
	39	char name[XT_FUNCTION_MAXNAMELEN-1];
	40
	41	u_int8_t revision;
	42	} user;
	43	struct {
	44	u_int16_t target_size;
	45
	46	/* Used inside the kernel */
	47	struct xt_target *target;
	48	} kernel;
	49
	50	/* Total length */
	51	u_int16_t target_size;
	52	} u;
	53
	54	unsigned char data[0];
	55	};
	56
	57	struct xt_standard_target
	58	{
	59	struct xt_entry_target target;
	60	int verdict;
	61	};
	62
2e4e6a17 HW	63	/* The argument to IPT_SO_GET_REVISION_*. Returns highest revision
	64	* kernel supports, if >= revision. */
	65	struct xt_get_revision
	66	{
	67	char name[XT_FUNCTION_MAXNAMELEN-1];
	68
	69	u_int8_t revision;
	70	};
	71
	72	/* CONTINUE verdict for targets */
	73	#define XT_CONTINUE 0xFFFFFFFF
	74
	75	/* For standard target */
	76	#define XT_RETURN (-NF_REPEAT - 1)
	77
6fbfc968 DM	78	/* this is a dummy structure to find out the alignment requirement for a struct
	79	* containing all the fundamental data types that are used in ipt_entry,
	80	* ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my
	81	* personal pleasure to remove it -HW
	82	*/
	83	struct _xt_align
	84	{
	85	u_int8_t u8;
	86	u_int16_t u16;
	87	u_int32_t u32;
	88	u_int64_t u64;
	89	};
	90
	91	#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) \
	92	& ~(__alignof__(struct _xt_align)-1))
2e4e6a17 HW	93
	94	/* Standard return verdict, or do jump. */
	95	#define XT_STANDARD_TARGET ""
	96	/* Error verdict. */
	97	#define XT_ERROR_TARGET "ERROR"
	98
	99	/*
	100	* New IP firewall options for [gs]etsockopt at the RAW IP level.
	101	* Unlike BSD Linux inherits IP options so you don't have to use a raw
	102	* socket for this. Instead we check rights in the calls. */
	103	#define XT_BASE_CTL 64 /* base for firewall socket options */
	104
	105	#define XT_SO_SET_REPLACE (XT_BASE_CTL)
	106	#define XT_SO_SET_ADD_COUNTERS (XT_BASE_CTL + 1)
	107	#define XT_SO_SET_MAX XT_SO_SET_ADD_COUNTERS
	108
	109	#define XT_SO_GET_INFO (XT_BASE_CTL)
	110	#define XT_SO_GET_ENTRIES (XT_BASE_CTL + 1)
	111	#define XT_SO_GET_REVISION_MATCH (XT_BASE_CTL + 2)
	112	#define XT_SO_GET_REVISION_TARGET (XT_BASE_CTL + 3)
	113	#define XT_SO_GET_MAX XT_SO_GET_REVISION_TARGET
	114
	115	#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
	116	#define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
	117
	118	struct xt_counters
	119	{
	120	u_int64_t pcnt, bcnt; /* Packet and byte counters */
	121	};
	122
	123	/* The argument to IPT_SO_ADD_COUNTERS. */
	124	struct xt_counters_info
	125	{
	126	/* Which table. */
	127	char name[XT_TABLE_MAXNAMELEN];
	128
	129	unsigned int num_counters;
	130
	131	/* The counters (actually `number' of these). */
	132	struct xt_counters counters[0];
	133	};
	134
	135	#define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */
	136
	137	#ifdef __KERNEL__
	138
	139	#include <linux/netdevice.h>
	140
2e4e6a17 HW	141	struct xt_match
	142	{
	143	struct list_head list;
	144
	145	const char name[XT_FUNCTION_MAXNAMELEN-1];
	146
2e4e6a17 HW	147	/* Return true or false: return FALSE and set *hotdrop = 1 to
	148	force immediate packet drop. */
	149	/* Arguments changed since 2.6.9, as this must now handle
	150	non-linear skb, using skb_header_pointer and
	151	skb_ip_make_writable. */
	152	int (match)(const struct sk_buff skb,
	153	const struct net_device *in,
	154	const struct net_device *out,
1c524830	155	const struct xt_match *match,
2e4e6a17 HW	156	const void *matchinfo,
	157	int offset,
	158	unsigned int protoff,
	159	int *hotdrop);
	160
	161	/* Called when user tries to insert an entry of this type. */
	162	/* Should return true or false. */
	163	int (checkentry)(const char tablename,
	164	const void *ip,
1c524830	165	const struct xt_match *match,
2e4e6a17	166	void *matchinfo,
2e4e6a17 HW	167	unsigned int hook_mask);
	168
	169	/* Called when entry of this type deleted. */
efa74165	170	void (destroy)(const struct xt_match match, void *matchinfo);
2e4e6a17	171
2722971c	172	/* Called when userspace align differs from kernel space one */
9fa492cd PM	173	void (compat_from_user)(void dst, void *src);
9fa492cd PM	174	int (compat_to_user)(void __user dst, void *src);
2722971c	175
2e4e6a17 HW	176	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
2e4e6a17 HW	177	struct module *me;
37f9f733	178
91270cf8 PM	179	/* Free to use by each match */
	180	unsigned long data;
	181
37f9f733 PM	182	char *table;
37f9f733 PM	183	unsigned int matchsize;
9fa492cd	184	unsigned int compatsize;
37f9f733 PM	185	unsigned int hooks;
37f9f733 PM	186	unsigned short proto;
c4b88513 PM	187
c4b88513 PM	188	unsigned short family;
37f9f733	189	u_int8_t revision;
2e4e6a17 HW	190	};
	191
	192	/* Registration hooks for targets. */
	193	struct xt_target
	194	{
	195	struct list_head list;
	196
	197	const char name[XT_FUNCTION_MAXNAMELEN-1];
	198
2e4e6a17 HW	199	/* Returns verdict. Argument order changed since 2.6.9, as this
	200	must now handle non-linear skbs, using skb_copy_bits and
	201	skb_ip_make_writable. */
	202	unsigned int (target)(struct sk_buff *pskb,
	203	const struct net_device *in,
	204	const struct net_device *out,
	205	unsigned int hooknum,
1c524830	206	const struct xt_target *target,
fe1cb108	207	const void *targinfo);
2e4e6a17 HW	208
	209	/* Called when user tries to insert an entry of this type:
	210	hook_mask is a bitmask of hooks from which it can be
	211	called. */
	212	/* Should return true or false. */
	213	int (checkentry)(const char tablename,
	214	const void *entry,
1c524830	215	const struct xt_target *target,
2e4e6a17	216	void *targinfo,
2e4e6a17 HW	217	unsigned int hook_mask);
	218
	219	/* Called when entry of this type deleted. */
efa74165	220	void (destroy)(const struct xt_target target, void *targinfo);
2e4e6a17	221
2722971c	222	/* Called when userspace align differs from kernel space one */
9fa492cd PM	223	void (compat_from_user)(void dst, void *src);
9fa492cd PM	224	int (compat_to_user)(void __user dst, void *src);
2722971c	225
2e4e6a17 HW	226	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
2e4e6a17 HW	227	struct module *me;
37f9f733 PM	228
	229	char *table;
	230	unsigned int targetsize;
9fa492cd	231	unsigned int compatsize;
37f9f733 PM	232	unsigned int hooks;
37f9f733 PM	233	unsigned short proto;
c4b88513 PM	234
c4b88513 PM	235	unsigned short family;
37f9f733	236	u_int8_t revision;
2e4e6a17 HW	237	};
	238
	239	/* Furniture shopping... */
	240	struct xt_table
	241	{
	242	struct list_head list;
	243
	244	/* A unique name... */
	245	char name[XT_TABLE_MAXNAMELEN];
	246
	247	/* What hooks you will enter on */
	248	unsigned int valid_hooks;
	249
	250	/* Lock for the curtain */
	251	rwlock_t lock;
	252
	253	/* Man behind the curtain... */
	254	//struct ip6t_table_info *private;
	255	void *private;
	256
	257	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	258	struct module *me;
	259
	260	int af; /* address/protocol family */
	261	};
	262
	263	#include <linux/netfilter_ipv4.h>
	264
	265	/* The table itself */
	266	struct xt_table_info
	267	{
	268	/* Size per table */
	269	unsigned int size;
	270	/* Number of entries: FIXME. --RR */
	271	unsigned int number;
	272	/* Initial number of entries. Needed for module usage count */
	273	unsigned int initial_entries;
	274
	275	/* Entry points and underflows */
	276	unsigned int hook_entry[NF_IP_NUMHOOKS];
	277	unsigned int underflow[NF_IP_NUMHOOKS];
	278
	279	/* ipt_entry tables: one per CPU */
	280	char *entries[NR_CPUS];
	281	};
	282
a45049c5 PNA	283	extern int xt_register_target(struct xt_target *target);
a45049c5 PNA	284	extern void xt_unregister_target(struct xt_target *target);
52d9c42e PM	285	extern int xt_register_targets(struct xt_target *target, unsigned int n);
	286	extern void xt_unregister_targets(struct xt_target *target, unsigned int n);
	287
a45049c5 PNA	288	extern int xt_register_match(struct xt_match *target);
a45049c5 PNA	289	extern void xt_unregister_match(struct xt_match *target);
52d9c42e PM	290	extern int xt_register_matches(struct xt_match *match, unsigned int n);
52d9c42e PM	291	extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
2e4e6a17	292
37f9f733 PM	293	extern int xt_check_match(const struct xt_match *match, unsigned short family,
	294	unsigned int size, const char *table, unsigned int hook,
	295	unsigned short proto, int inv_proto);
	296	extern int xt_check_target(const struct xt_target *target, unsigned short family,
	297	unsigned int size, const char *table, unsigned int hook,
	298	unsigned short proto, int inv_proto);
	299
2e4e6a17 HW	300	extern int xt_register_table(struct xt_table *table,
	301	struct xt_table_info *bootstrap,
	302	struct xt_table_info *newinfo);
	303	extern void xt_unregister_table(struct xt_table table);
	304
	305	extern struct xt_table_info xt_replace_table(struct xt_table table,
	306	unsigned int num_counters,
	307	struct xt_table_info *newinfo,
	308	int *error);
	309
	310	extern struct xt_match xt_find_match(int af, const char name, u8 revision);
	311	extern struct xt_target xt_find_target(int af, const char name, u8 revision);
	312	extern struct xt_target xt_request_find_target(int af, const char name,
	313	u8 revision);
	314	extern int xt_find_revision(int af, const char *name, u8 revision, int target,
	315	int *err);
	316
	317	extern struct xt_table xt_find_table_lock(int af, const char name);
	318	extern void xt_table_unlock(struct xt_table *t);
	319
	320	extern int xt_proto_init(int af);
	321	extern void xt_proto_fini(int af);
	322
	323	extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
	324	extern void xt_free_table_info(struct xt_table_info *info);
	325
2722971c DM	326	#ifdef CONFIG_COMPAT
	327	#include <net/compat.h>
	328
	329	struct compat_xt_entry_match
	330	{
	331	union {
	332	struct {
	333	u_int16_t match_size;
	334	char name[XT_FUNCTION_MAXNAMELEN - 1];
	335	u_int8_t revision;
	336	} user;
46c5ea3c PM	337	struct {
	338	u_int16_t match_size;
	339	compat_uptr_t match;
	340	} kernel;
2722971c DM	341	u_int16_t match_size;
	342	} u;
	343	unsigned char data[0];
	344	};
	345
	346	struct compat_xt_entry_target
	347	{
	348	union {
	349	struct {
	350	u_int16_t target_size;
	351	char name[XT_FUNCTION_MAXNAMELEN - 1];
	352	u_int8_t revision;
	353	} user;
46c5ea3c PM	354	struct {
	355	u_int16_t target_size;
	356	compat_uptr_t target;
	357	} kernel;
2722971c DM	358	u_int16_t target_size;
	359	} u;
	360	unsigned char data[0];
	361	};
	362
	363	/* FIXME: this works only on 32 bit tasks
	364	* need to change whole approach in order to calculate align as function of
	365	* current task alignment */
	366
	367	struct compat_xt_counters
	368	{
55fe5866	369	#if defined(CONFIG_X86_64) \|\| defined(CONFIG_IA64)
2722971c	370	u_int32_t cnt[4];
55fe5866 PM	371	#else
	372	u_int64_t cnt[2];
	373	#endif
2722971c DM	374	};
	375
	376	struct compat_xt_counters_info
	377	{
	378	char name[XT_TABLE_MAXNAMELEN];
	379	compat_uint_t num_counters;
	380	struct compat_xt_counters counters[0];
	381	};
	382
	383	#define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \
	384	& ~(__alignof__(struct compat_xt_counters)-1))
	385
	386	extern void xt_compat_lock(int af);
	387	extern void xt_compat_unlock(int af);
9fa492cd PM	388
	389	extern int xt_compat_match_offset(struct xt_match *match);
	390	extern void xt_compat_match_from_user(struct xt_entry_match *m,
	391	void *dstptr, int size);
	392	extern int xt_compat_match_to_user(struct xt_entry_match *m,
	393	void * __user dstptr, int size);
	394
	395	extern int xt_compat_target_offset(struct xt_target *target);
	396	extern void xt_compat_target_from_user(struct xt_entry_target *t,
	397	void *dstptr, int size);
	398	extern int xt_compat_target_to_user(struct xt_entry_target *t,
	399	void * __user dstptr, int size);
2722971c DM	400
2722971c DM	401	#endif /* CONFIG_COMPAT */
2e4e6a17 HW	402	#endif /* __KERNEL__ */
	403
	404	#endif /* _X_TABLES_H */