[deliverable/linux.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>

#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/listhelp.h>

#ifdef CONFIG_COMPAT
#define COMPAT_TO_USER		1
#define COMPAT_FROM_USER	-1
#define COMPAT_CALC_SIZE	0
#endif

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 matchinfosize,
			  unsigned int hook_mask);

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

	/* Called when userspace align differs from kernel space one */
	int (*compat)(void *match, void **dstptr, int *size, int convert);

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

	char *table;
	unsigned int matchsize;
	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,
			       void *userdata);

	/* 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 targinfosize,
			  unsigned int hook_mask);

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

	/* Called when userspace align differs from kernel space one */
	int (*compat)(void *target, void **dstptr, int *size, int convert);

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

	char *table;
	unsigned int targetsize;
	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(void *match, void **dstptr, int *size, int convert);
extern int xt_compat_target(void *target, void **dstptr, int *size,
		int convert);

#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
	141	#define ASSERT_READ_LOCK(x)
	142	#define ASSERT_WRITE_LOCK(x)
	143	#include <linux/netfilter_ipv4/listhelp.h>
	144
2722971c DM	145	#ifdef CONFIG_COMPAT
	146	#define COMPAT_TO_USER 1
	147	#define COMPAT_FROM_USER -1
	148	#define COMPAT_CALC_SIZE 0
	149	#endif
	150
2e4e6a17 HW	151	struct xt_match
	152	{
	153	struct list_head list;
	154
	155	const char name[XT_FUNCTION_MAXNAMELEN-1];
	156
2e4e6a17 HW	157	/* Return true or false: return FALSE and set *hotdrop = 1 to
	158	force immediate packet drop. */
	159	/* Arguments changed since 2.6.9, as this must now handle
	160	non-linear skb, using skb_header_pointer and
	161	skb_ip_make_writable. */
	162	int (match)(const struct sk_buff skb,
	163	const struct net_device *in,
	164	const struct net_device *out,
1c524830	165	const struct xt_match *match,
2e4e6a17 HW	166	const void *matchinfo,
	167	int offset,
	168	unsigned int protoff,
	169	int *hotdrop);
	170
	171	/* Called when user tries to insert an entry of this type. */
	172	/* Should return true or false. */
	173	int (checkentry)(const char tablename,
	174	const void *ip,
1c524830	175	const struct xt_match *match,
2e4e6a17 HW	176	void *matchinfo,
	177	unsigned int matchinfosize,
	178	unsigned int hook_mask);
	179
	180	/* Called when entry of this type deleted. */
1c524830 PM	181	void (destroy)(const struct xt_match match, void *matchinfo,
1c524830 PM	182	unsigned int matchinfosize);
2e4e6a17	183
2722971c DM	184	/* Called when userspace align differs from kernel space one */
	185	int (compat)(void match, void *dstptr, int size, int convert);
	186
2e4e6a17 HW	187	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
2e4e6a17 HW	188	struct module *me;
37f9f733 PM	189
	190	char *table;
	191	unsigned int matchsize;
	192	unsigned int hooks;
	193	unsigned short proto;
c4b88513 PM	194
c4b88513 PM	195	unsigned short family;
37f9f733	196	u_int8_t revision;
2e4e6a17 HW	197	};
	198
	199	/* Registration hooks for targets. */
	200	struct xt_target
	201	{
	202	struct list_head list;
	203
	204	const char name[XT_FUNCTION_MAXNAMELEN-1];
	205
2e4e6a17 HW	206	/* Returns verdict. Argument order changed since 2.6.9, as this
	207	must now handle non-linear skbs, using skb_copy_bits and
	208	skb_ip_make_writable. */
	209	unsigned int (target)(struct sk_buff *pskb,
	210	const struct net_device *in,
	211	const struct net_device *out,
	212	unsigned int hooknum,
1c524830	213	const struct xt_target *target,
2e4e6a17 HW	214	const void *targinfo,
	215	void *userdata);
	216
	217	/* Called when user tries to insert an entry of this type:
	218	hook_mask is a bitmask of hooks from which it can be
	219	called. */
	220	/* Should return true or false. */
	221	int (checkentry)(const char tablename,
	222	const void *entry,
1c524830	223	const struct xt_target *target,
2e4e6a17 HW	224	void *targinfo,
	225	unsigned int targinfosize,
	226	unsigned int hook_mask);
	227
	228	/* Called when entry of this type deleted. */
1c524830 PM	229	void (destroy)(const struct xt_target target, void *targinfo,
1c524830 PM	230	unsigned int targinfosize);
2e4e6a17	231
2722971c DM	232	/* Called when userspace align differs from kernel space one */
	233	int (compat)(void target, void *dstptr, int size, int convert);
	234
2e4e6a17 HW	235	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
2e4e6a17 HW	236	struct module *me;
37f9f733 PM	237
	238	char *table;
	239	unsigned int targetsize;
	240	unsigned int hooks;
	241	unsigned short proto;
c4b88513 PM	242
c4b88513 PM	243	unsigned short family;
37f9f733	244	u_int8_t revision;
2e4e6a17 HW	245	};
	246
	247	/* Furniture shopping... */
	248	struct xt_table
	249	{
	250	struct list_head list;
	251
	252	/* A unique name... */
	253	char name[XT_TABLE_MAXNAMELEN];
	254
	255	/* What hooks you will enter on */
	256	unsigned int valid_hooks;
	257
	258	/* Lock for the curtain */
	259	rwlock_t lock;
	260
	261	/* Man behind the curtain... */
	262	//struct ip6t_table_info *private;
	263	void *private;
	264
	265	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	266	struct module *me;
	267
	268	int af; /* address/protocol family */
	269	};
	270
	271	#include <linux/netfilter_ipv4.h>
	272
	273	/* The table itself */
	274	struct xt_table_info
	275	{
	276	/* Size per table */
	277	unsigned int size;
	278	/* Number of entries: FIXME. --RR */
	279	unsigned int number;
	280	/* Initial number of entries. Needed for module usage count */
	281	unsigned int initial_entries;
	282
	283	/* Entry points and underflows */
	284	unsigned int hook_entry[NF_IP_NUMHOOKS];
	285	unsigned int underflow[NF_IP_NUMHOOKS];
	286
	287	/* ipt_entry tables: one per CPU */
	288	char *entries[NR_CPUS];
	289	};
	290
a45049c5 PNA	291	extern int xt_register_target(struct xt_target *target);
a45049c5 PNA	292	extern void xt_unregister_target(struct xt_target *target);
52d9c42e PM	293	extern int xt_register_targets(struct xt_target *target, unsigned int n);
	294	extern void xt_unregister_targets(struct xt_target *target, unsigned int n);
	295
a45049c5 PNA	296	extern int xt_register_match(struct xt_match *target);
a45049c5 PNA	297	extern void xt_unregister_match(struct xt_match *target);
52d9c42e PM	298	extern int xt_register_matches(struct xt_match *match, unsigned int n);
52d9c42e PM	299	extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
2e4e6a17	300
37f9f733 PM	301	extern int xt_check_match(const struct xt_match *match, unsigned short family,
	302	unsigned int size, const char *table, unsigned int hook,
	303	unsigned short proto, int inv_proto);
	304	extern int xt_check_target(const struct xt_target *target, unsigned short family,
	305	unsigned int size, const char *table, unsigned int hook,
	306	unsigned short proto, int inv_proto);
	307
2e4e6a17 HW	308	extern int xt_register_table(struct xt_table *table,
	309	struct xt_table_info *bootstrap,
	310	struct xt_table_info *newinfo);
	311	extern void xt_unregister_table(struct xt_table table);
	312
	313	extern struct xt_table_info xt_replace_table(struct xt_table table,
	314	unsigned int num_counters,
	315	struct xt_table_info *newinfo,
	316	int *error);
	317
	318	extern struct xt_match xt_find_match(int af, const char name, u8 revision);
	319	extern struct xt_target xt_find_target(int af, const char name, u8 revision);
	320	extern struct xt_target xt_request_find_target(int af, const char name,
	321	u8 revision);
	322	extern int xt_find_revision(int af, const char *name, u8 revision, int target,
	323	int *err);
	324
	325	extern struct xt_table xt_find_table_lock(int af, const char name);
	326	extern void xt_table_unlock(struct xt_table *t);
	327
	328	extern int xt_proto_init(int af);
	329	extern void xt_proto_fini(int af);
	330
	331	extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
	332	extern void xt_free_table_info(struct xt_table_info *info);
	333
2722971c DM	334	#ifdef CONFIG_COMPAT
	335	#include <net/compat.h>
	336
	337	struct compat_xt_entry_match
	338	{
	339	union {
	340	struct {
	341	u_int16_t match_size;
	342	char name[XT_FUNCTION_MAXNAMELEN - 1];
	343	u_int8_t revision;
	344	} user;
46c5ea3c PM	345	struct {
	346	u_int16_t match_size;
	347	compat_uptr_t match;
	348	} kernel;
2722971c DM	349	u_int16_t match_size;
	350	} u;
	351	unsigned char data[0];
	352	};
	353
	354	struct compat_xt_entry_target
	355	{
	356	union {
	357	struct {
	358	u_int16_t target_size;
	359	char name[XT_FUNCTION_MAXNAMELEN - 1];
	360	u_int8_t revision;
	361	} user;
46c5ea3c PM	362	struct {
	363	u_int16_t target_size;
	364	compat_uptr_t target;
	365	} kernel;
2722971c DM	366	u_int16_t target_size;
	367	} u;
	368	unsigned char data[0];
	369	};
	370
	371	/* FIXME: this works only on 32 bit tasks
	372	* need to change whole approach in order to calculate align as function of
	373	* current task alignment */
	374
	375	struct compat_xt_counters
	376	{
55fe5866	377	#if defined(CONFIG_X86_64) \|\| defined(CONFIG_IA64)
2722971c	378	u_int32_t cnt[4];
55fe5866 PM	379	#else
	380	u_int64_t cnt[2];
	381	#endif
2722971c DM	382	};
	383
	384	struct compat_xt_counters_info
	385	{
	386	char name[XT_TABLE_MAXNAMELEN];
	387	compat_uint_t num_counters;
	388	struct compat_xt_counters counters[0];
	389	};
	390
	391	#define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \
	392	& ~(__alignof__(struct compat_xt_counters)-1))
	393
	394	extern void xt_compat_lock(int af);
	395	extern void xt_compat_unlock(int af);
	396	extern int xt_compat_match(void match, void dstptr, int size, int convert);
	397	extern int xt_compat_target(void target, void dstptr, int size,
	398	int convert);
	399
	400	#endif /* CONFIG_COMPAT */
2e4e6a17 HW	401	#endif /* __KERNEL__ */
	402
	403	#endif /* _X_TABLES_H */