[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>

#define ASSERT_READ_LOCK(x)
#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/listhelp.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 matchinfosize,
			  unsigned int hook_mask);

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

	/* 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);

	/* 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_match(struct xt_match *target);
extern void xt_unregister_match(struct xt_match *target);

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);

#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
	145	struct xt_match
	146	{
	147	struct list_head list;
	148
	149	const char name[XT_FUNCTION_MAXNAMELEN-1];
	150
2e4e6a17 HW	151	/* Return true or false: return FALSE and set *hotdrop = 1 to
	152	force immediate packet drop. */
	153	/* Arguments changed since 2.6.9, as this must now handle
	154	non-linear skb, using skb_header_pointer and
	155	skb_ip_make_writable. */
	156	int (match)(const struct sk_buff skb,
	157	const struct net_device *in,
	158	const struct net_device *out,
1c524830	159	const struct xt_match *match,
2e4e6a17 HW	160	const void *matchinfo,
	161	int offset,
	162	unsigned int protoff,
	163	int *hotdrop);
	164
	165	/* Called when user tries to insert an entry of this type. */
	166	/* Should return true or false. */
	167	int (checkentry)(const char tablename,
	168	const void *ip,
1c524830	169	const struct xt_match *match,
2e4e6a17 HW	170	void *matchinfo,
	171	unsigned int matchinfosize,
	172	unsigned int hook_mask);
	173
	174	/* Called when entry of this type deleted. */
1c524830 PM	175	void (destroy)(const struct xt_match match, void *matchinfo,
1c524830 PM	176	unsigned int matchinfosize);
2e4e6a17 HW	177
	178	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	179	struct module *me;
37f9f733 PM	180
	181	char *table;
	182	unsigned int matchsize;
	183	unsigned int hooks;
	184	unsigned short proto;
c4b88513 PM	185
c4b88513 PM	186	unsigned short family;
37f9f733	187	u_int8_t revision;
2e4e6a17 HW	188	};
	189
	190	/* Registration hooks for targets. */
	191	struct xt_target
	192	{
	193	struct list_head list;
	194
	195	const char name[XT_FUNCTION_MAXNAMELEN-1];
	196
2e4e6a17 HW	197	/* Returns verdict. Argument order changed since 2.6.9, as this
	198	must now handle non-linear skbs, using skb_copy_bits and
	199	skb_ip_make_writable. */
	200	unsigned int (target)(struct sk_buff *pskb,
	201	const struct net_device *in,
	202	const struct net_device *out,
	203	unsigned int hooknum,
1c524830	204	const struct xt_target *target,
2e4e6a17 HW	205	const void *targinfo,
	206	void *userdata);
	207
	208	/* Called when user tries to insert an entry of this type:
	209	hook_mask is a bitmask of hooks from which it can be
	210	called. */
	211	/* Should return true or false. */
	212	int (checkentry)(const char tablename,
	213	const void *entry,
1c524830	214	const struct xt_target *target,
2e4e6a17 HW	215	void *targinfo,
	216	unsigned int targinfosize,
	217	unsigned int hook_mask);
	218
	219	/* Called when entry of this type deleted. */
1c524830 PM	220	void (destroy)(const struct xt_target target, void *targinfo,
1c524830 PM	221	unsigned int targinfosize);
2e4e6a17 HW	222
	223	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	224	struct module *me;
37f9f733 PM	225
	226	char *table;
	227	unsigned int targetsize;
	228	unsigned int hooks;
	229	unsigned short proto;
c4b88513 PM	230
c4b88513 PM	231	unsigned short family;
37f9f733	232	u_int8_t revision;
2e4e6a17 HW	233	};
	234
	235	/* Furniture shopping... */
	236	struct xt_table
	237	{
	238	struct list_head list;
	239
	240	/* A unique name... */
	241	char name[XT_TABLE_MAXNAMELEN];
	242
	243	/* What hooks you will enter on */
	244	unsigned int valid_hooks;
	245
	246	/* Lock for the curtain */
	247	rwlock_t lock;
	248
	249	/* Man behind the curtain... */
	250	//struct ip6t_table_info *private;
	251	void *private;
	252
	253	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
	254	struct module *me;
	255
	256	int af; /* address/protocol family */
	257	};
	258
	259	#include <linux/netfilter_ipv4.h>
	260
	261	/* The table itself */
	262	struct xt_table_info
	263	{
	264	/* Size per table */
	265	unsigned int size;
	266	/* Number of entries: FIXME. --RR */
	267	unsigned int number;
	268	/* Initial number of entries. Needed for module usage count */
	269	unsigned int initial_entries;
	270
	271	/* Entry points and underflows */
	272	unsigned int hook_entry[NF_IP_NUMHOOKS];
	273	unsigned int underflow[NF_IP_NUMHOOKS];
	274
	275	/* ipt_entry tables: one per CPU */
	276	char *entries[NR_CPUS];
	277	};
	278
a45049c5 PNA	279	extern int xt_register_target(struct xt_target *target);
	280	extern void xt_unregister_target(struct xt_target *target);
	281	extern int xt_register_match(struct xt_match *target);
	282	extern void xt_unregister_match(struct xt_match *target);
2e4e6a17	283
37f9f733 PM	284	extern int xt_check_match(const struct xt_match *match, unsigned short family,
	285	unsigned int size, const char *table, unsigned int hook,
	286	unsigned short proto, int inv_proto);
	287	extern int xt_check_target(const struct xt_target *target, unsigned short family,
	288	unsigned int size, const char *table, unsigned int hook,
	289	unsigned short proto, int inv_proto);
	290
2e4e6a17 HW	291	extern int xt_register_table(struct xt_table *table,
	292	struct xt_table_info *bootstrap,
	293	struct xt_table_info *newinfo);
	294	extern void xt_unregister_table(struct xt_table table);
	295
	296	extern struct xt_table_info xt_replace_table(struct xt_table table,
	297	unsigned int num_counters,
	298	struct xt_table_info *newinfo,
	299	int *error);
	300
	301	extern struct xt_match xt_find_match(int af, const char name, u8 revision);
	302	extern struct xt_target xt_find_target(int af, const char name, u8 revision);
	303	extern struct xt_target xt_request_find_target(int af, const char name,
	304	u8 revision);
	305	extern int xt_find_revision(int af, const char *name, u8 revision, int target,
	306	int *err);
	307
	308	extern struct xt_table xt_find_table_lock(int af, const char name);
	309	extern void xt_table_unlock(struct xt_table *t);
	310
	311	extern int xt_proto_init(int af);
	312	extern void xt_proto_fini(int af);
	313
	314	extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
	315	extern void xt_free_table_info(struct xt_table_info *info);
	316
	317	#endif /* __KERNEL__ */
	318
	319	#endif /* _X_TABLES_H */