x_tables.h File Reference

#include <linux/netdevice.h>
#include <uapi/linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4.h>

Go to the source code of this file.

Data Structures
struct	xt_action_param
struct	xt_mtchk_param
struct	xt_mtdtor_param
struct	xt_tgchk_param
struct	xt_tgdtor_param
struct	xt_match
struct	xt_target
struct	xt_table
struct	xt_table_info

Macros
#define	XT_TABLE_INFO_SZ

Functions
int	xt_register_target (struct xt_target *target)
void	xt_unregister_target (struct xt_target *target)
int	xt_register_targets (struct xt_target *target, unsigned int n)
void	xt_unregister_targets (struct xt_target *target, unsigned int n)
int	xt_register_match (struct xt_match *target)
void	xt_unregister_match (struct xt_match *target)
int	xt_register_matches (struct xt_match *match, unsigned int n)
void	xt_unregister_matches (struct xt_match *match, unsigned int n)
int	xt_check_match (struct xt_mtchk_param *, unsigned int size, u_int8_t proto, bool inv_proto)
int	xt_check_target (struct xt_tgchk_param *, unsigned int size, u_int8_t proto, bool inv_proto)
struct xt_table *	xt_register_table (struct net *net, const struct xt_table *table, struct xt_table_info *bootstrap, struct xt_table_info *newinfo)
void *	xt_unregister_table (struct xt_table *table)
struct xt_table_info *	xt_replace_table (struct xt_table *table, unsigned int num_counters, struct xt_table_info *newinfo, int *error)
struct xt_match *	xt_find_match (u8 af, const char *name, u8 revision)
struct xt_target *	xt_find_target (u8 af, const char *name, u8 revision)
struct xt_match *	xt_request_find_match (u8 af, const char *name, u8 revision)
struct xt_target *	xt_request_find_target (u8 af, const char *name, u8 revision)
int	xt_find_revision (u8 af, const char *name, u8 revision, int target, int *err)
struct xt_table *	xt_find_table_lock (struct net *net, u_int8_t af, const char *name)
void	xt_table_unlock (struct xt_table *t)
int	xt_proto_init (struct net *net, u_int8_t af)
void	xt_proto_fini (struct net *net, u_int8_t af)
struct xt_table_info *	xt_alloc_table_info (unsigned int size)
void	xt_free_table_info (struct xt_table_info *info)
	DECLARE_PER_CPU (seqcount_t, xt_recseq)
struct nf_hook_ops *	xt_hook_link (const struct xt_table *, nf_hookfn *)
void	xt_hook_unlink (const struct xt_table *, struct nf_hook_ops *)

Macro Definition Documentation

#define XT_TABLE_INFO_SZ

Value:

(offsetof(struct xt_table_info, entries) \
              + nr_cpu_ids * sizeof(char *))

Definition at line 230 of file x_tables.h.

Function Documentation

DECLARE_PER_CPU	(	seqcount_t	,
		xt_recseq
	)

xt_recseq - recursive seqcount for netfilter use

Packet processing changes the seqcount only if no recursion happened get_counters() can use read_seqcount_begin()/read_seqcount_retry(), because we use the normal seqcount convention : Low order bit set to 1 if a writer is active.

struct xt_table_info* xt_alloc_table_info ( unsigned int  size )

read

Definition at line 663 of file x_tables.c.

int xt_check_match	(	struct xt_mtchk_param *	,
		unsigned int	size,
		u_int8_t	proto,
		bool	inv_proto
	)

Definition at line 374 of file x_tables.c.

int xt_check_target	(	struct xt_tgchk_param *	,
		unsigned int	size,
		u_int8_t	proto,
		bool	inv_proto
	)

Definition at line 552 of file x_tables.c.

struct xt_match* xt_find_match ( u8  af, const char *  name, u8  revision  )

read

Definition at line 191 of file x_tables.c.

int xt_find_revision	(	u8	af,
		const char *	name,
		u8	revision,
		int	target,
		int *	err
	)

Definition at line 320 of file x_tables.c.

struct xt_table* xt_find_table_lock ( struct net *  net, u_int8_t  af, const char *  name  )

read

Definition at line 730 of file x_tables.c.

struct xt_target* xt_find_target ( u8  af, const char *  name, u8  revision  )

read

Definition at line 236 of file x_tables.c.

void xt_free_table_info

(

struct xt_table_info *

info

)

Definition at line 697 of file x_tables.c.

struct nf_hook_ops* xt_hook_link ( const struct xt_table *  , nf_hookfn *    )

read

Definition at line 1228 of file x_tables.c.

void xt_hook_unlink	(	const struct xt_table *	table,
		struct nf_hook_ops *	ops
	)

xt_hook_unlink - remove hooks for a table : nf_hook_ops array as returned by nf_hook_link : the very same mask that was passed to nf_hook_link

Definition at line 1267 of file x_tables.c.

void xt_proto_fini	(	struct net *	net,
		u_int8_t	af
	)

Definition at line 1326 of file x_tables.c.

int xt_proto_init	(	struct net *	net,
		u_int8_t	af
	)

Definition at line 1274 of file x_tables.c.

int xt_register_match

(

struct xt_match *

target

)

Definition at line 128 of file x_tables.c.

int xt_register_matches	(	struct xt_match *	match,
		unsigned int	n
	)

Definition at line 156 of file x_tables.c.

struct xt_table* xt_register_table ( struct net *  net, const struct xt_table *  table, struct xt_table_info *  bootstrap, struct xt_table_info *  newinfo  )

read

Definition at line 865 of file x_tables.c.

int xt_register_target

(

struct xt_target *

target

)

Definition at line 74 of file x_tables.c.

int xt_register_targets	(	struct xt_target *	target,
		unsigned int	n
	)

Definition at line 100 of file x_tables.c.

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

read

Definition at line 808 of file x_tables.c.

struct xt_match* xt_request_find_match ( u8  af, const char *  name, u8  revision  )

read

Definition at line 221 of file x_tables.c.

struct xt_target* xt_request_find_target ( u8  af, const char *  name, u8  revision  )

read

Definition at line 265 of file x_tables.c.

void xt_table_unlock

(

struct xt_table *

t

)

Definition at line 746 of file x_tables.c.

void xt_unregister_match

(

struct xt_match *

target

)

Definition at line 145 of file x_tables.c.

void xt_unregister_matches	(	struct xt_match *	match,
		unsigned int	n
	)

Definition at line 176 of file x_tables.c.

void* xt_unregister_table

(

struct xt_table *

table

)

Definition at line 918 of file x_tables.c.

void xt_unregister_target

(

struct xt_target *

target

)

Definition at line 89 of file x_tables.c.

void xt_unregister_targets	(	struct xt_target *	target,
		unsigned int	n
	)

Definition at line 120 of file x_tables.c.