nf_conntrack_core.c File Reference

#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/proc_fs.h>
#include <linux/vmalloc.h>
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/jhash.h>
#include <linux/err.h>
#include <linux/percpu.h>
#include <linux/moduleparam.h>
#include <linux/notifier.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/socket.h>
#include <linux/mm.h>
#include <linux/nsproxy.h>
#include <linux/rculist_nulls.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_extend.h>
#include <net/netfilter/nf_conntrack_acct.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/nf_conntrack_timestamp.h>
#include <net/netfilter/nf_conntrack_timeout.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_core.h>

Go to the source code of this file.

Data Structures
struct	__nf_ct_flush_report

Macros
#define	NF_CONNTRACK_VERSION   "0.5.0"
#define	NF_CT_EVICTION_RANGE   8
#define	UNCONFIRMED_NULLS_VAL   ((1<<30)+0)
#define	DYING_NULLS_VAL   ((1<<30)+1)

Functions
	EXPORT_SYMBOL_GPL (nfnetlink_parse_nat_setup_hook)
	EXPORT_SYMBOL_GPL (nf_nat_seq_adjust_hook)
	DEFINE_SPINLOCK (nf_conntrack_lock)
	EXPORT_SYMBOL_GPL (nf_conntrack_lock)
	EXPORT_SYMBOL_GPL (nf_conntrack_htable_size)
	EXPORT_SYMBOL_GPL (nf_conntrack_max)
	DEFINE_PER_CPU (struct nf_conn, nf_conntrack_untracked)
	EXPORT_PER_CPU_SYMBOL (nf_conntrack_untracked)
	EXPORT_SYMBOL_GPL (nf_conntrack_hash_rnd)
bool	nf_ct_get_tuple (const struct sk_buff *skb, unsigned int nhoff, unsigned int dataoff, u_int16_t l3num, u_int8_t protonum, struct nf_conntrack_tuple *tuple, const struct nf_conntrack_l3proto *l3proto, const struct nf_conntrack_l4proto *l4proto)
	EXPORT_SYMBOL_GPL (nf_ct_get_tuple)
bool	nf_ct_get_tuplepr (const struct sk_buff *skb, unsigned int nhoff, u_int16_t l3num, struct nf_conntrack_tuple *tuple)
	EXPORT_SYMBOL_GPL (nf_ct_get_tuplepr)
bool	nf_ct_invert_tuple (struct nf_conntrack_tuple *inverse, const struct nf_conntrack_tuple *orig, const struct nf_conntrack_l3proto *l3proto, const struct nf_conntrack_l4proto *l4proto)
	EXPORT_SYMBOL_GPL (nf_ct_invert_tuple)
void	nf_ct_delete_from_lists (struct nf_conn *ct)
	EXPORT_SYMBOL_GPL (nf_ct_delete_from_lists)
void	nf_ct_insert_dying_list (struct nf_conn *ct)
	EXPORT_SYMBOL_GPL (nf_ct_insert_dying_list)
struct nf_conntrack_tuple_hash *	__nf_conntrack_find (struct net *net, u16 zone, const struct nf_conntrack_tuple *tuple)
	EXPORT_SYMBOL_GPL (__nf_conntrack_find)
struct nf_conntrack_tuple_hash *	nf_conntrack_find_get (struct net *net, u16 zone, const struct nf_conntrack_tuple *tuple)
	EXPORT_SYMBOL_GPL (nf_conntrack_find_get)
int	nf_conntrack_hash_check_insert (struct nf_conn *ct)
	EXPORT_SYMBOL_GPL (nf_conntrack_hash_check_insert)
int	__nf_conntrack_confirm (struct sk_buff *skb)
	EXPORT_SYMBOL_GPL (__nf_conntrack_confirm)
int	nf_conntrack_tuple_taken (const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_conntrack)
	EXPORT_SYMBOL_GPL (nf_conntrack_tuple_taken)
void	init_nf_conntrack_hash_rnd (void)
struct nf_conn *	nf_conntrack_alloc (struct net *net, u16 zone, const struct nf_conntrack_tuple *orig, const struct nf_conntrack_tuple *repl, gfp_t gfp)
	EXPORT_SYMBOL_GPL (nf_conntrack_alloc)
void	nf_conntrack_free (struct nf_conn *ct)
	EXPORT_SYMBOL_GPL (nf_conntrack_free)
unsigned int	nf_conntrack_in (struct net *net, u_int8_t pf, unsigned int hooknum, struct sk_buff *skb)
	EXPORT_SYMBOL_GPL (nf_conntrack_in)
bool	nf_ct_invert_tuplepr (struct nf_conntrack_tuple *inverse, const struct nf_conntrack_tuple *orig)
	EXPORT_SYMBOL_GPL (nf_ct_invert_tuplepr)
void	nf_conntrack_alter_reply (struct nf_conn *ct, const struct nf_conntrack_tuple *newreply)
	EXPORT_SYMBOL_GPL (nf_conntrack_alter_reply)
void	__nf_ct_refresh_acct (struct nf_conn *ct, enum ip_conntrack_info ctinfo, const struct sk_buff *skb, unsigned long extra_jiffies, int do_acct)
	EXPORT_SYMBOL_GPL (__nf_ct_refresh_acct)
bool	__nf_ct_kill_acct (struct nf_conn *ct, enum ip_conntrack_info ctinfo, const struct sk_buff *skb, int do_acct)
	EXPORT_SYMBOL_GPL (__nf_ct_kill_acct)
void	nf_ct_iterate_cleanup (struct net *net, int(*iter)(struct nf_conn *i, void *data), void *data)
	EXPORT_SYMBOL_GPL (nf_ct_iterate_cleanup)
void	nf_ct_free_hashtable (void *hash, unsigned int size)
	EXPORT_SYMBOL_GPL (nf_ct_free_hashtable)
void	nf_conntrack_flush_report (struct net *net, u32 pid, int report)
	EXPORT_SYMBOL_GPL (nf_conntrack_flush_report)
void	nf_conntrack_cleanup (struct net *net)
void *	nf_ct_alloc_hashtable (unsigned int *sizep, int nulls)
	EXPORT_SYMBOL_GPL (nf_ct_alloc_hashtable)
int	nf_conntrack_set_hashsize (const char *val, struct kernel_param *kp)
	EXPORT_SYMBOL_GPL (nf_conntrack_set_hashsize)
	module_param_call (hashsize, nf_conntrack_set_hashsize, param_get_uint,&nf_conntrack_htable_size, 0600)
void	nf_ct_untracked_status_or (unsigned long bits)
	EXPORT_SYMBOL_GPL (nf_ct_untracked_status_or)
	EXPORT_SYMBOL_GPL (nf_ct_nat_offset)
int	nf_conntrack_init (struct net *net)

Variables
int(*	nfnetlink_parse_nat_setup_hook )(struct nf_conn *ct, enum nf_nat_manip_type manip, const struct nlattr *attr) __read_mostly
int(*	nf_nat_seq_adjust_hook )(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, unsigned int protoff)
unsigned int nf_conntrack_htable_size	__read_mostly
s16(*	nf_ct_nat_offset )(const struct nf_conn *ct, enum ip_conntrack_dir dir, u32 seq)

Macro Definition Documentation

#define DYING_NULLS_VAL   ((1<<30)+1)

Definition at line 1533 of file nf_conntrack_core.c.

#define NF_CONNTRACK_VERSION   "0.5.0"

Definition at line 51 of file nf_conntrack_core.c.

#define NF_CT_EVICTION_RANGE   8

Definition at line 608 of file nf_conntrack_core.c.

#define UNCONFIRMED_NULLS_VAL   ((1<<30)+0)

Definition at line 1532 of file nf_conntrack_core.c.

Function Documentation

int __nf_conntrack_confirm

(

struct sk_buff *

skb

)

Definition at line 466 of file nf_conntrack_core.c.

struct nf_conntrack_tuple_hash* __nf_conntrack_find ( struct net *  net, u16  zone, const struct nf_conntrack_tuple *  tuple  )

read

Definition at line 362 of file nf_conntrack_core.c.

bool __nf_ct_kill_acct	(	struct nf_conn *	ct,
		enum ip_conntrack_info	ctinfo,
		const struct sk_buff *	skb,
		int	do_acct
	)

Definition at line 1116 of file nf_conntrack_core.c.

void __nf_ct_refresh_acct	(	struct nf_conn *	ct,
		enum ip_conntrack_info	ctinfo,
		const struct sk_buff *	skb,
		unsigned long	extra_jiffies,
		int	do_acct
	)

Definition at line 1077 of file nf_conntrack_core.c.

DEFINE_PER_CPU	(	struct nf_conn	,
		nf_conntrack_untracked
	)

DEFINE_SPINLOCK

(

nf_conntrack_lock

)

EXPORT_PER_CPU_SYMBOL

(

nf_conntrack_untracked

)

EXPORT_SYMBOL_GPL

(

nfnetlink_parse_nat_setup_hook

)

EXPORT_SYMBOL_GPL

(

nf_nat_seq_adjust_hook

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_lock

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_htable_size

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_max

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_hash_rnd

)

EXPORT_SYMBOL_GPL

(

nf_ct_get_tuple

)

EXPORT_SYMBOL_GPL

(

nf_ct_get_tuplepr

)

EXPORT_SYMBOL_GPL

(

nf_ct_invert_tuple

)

EXPORT_SYMBOL_GPL

(

nf_ct_delete_from_lists

)

EXPORT_SYMBOL_GPL

(

nf_ct_insert_dying_list

)

EXPORT_SYMBOL_GPL

(

__nf_conntrack_find

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_find_get

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_hash_check_insert

)

EXPORT_SYMBOL_GPL

(

__nf_conntrack_confirm

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_tuple_taken

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_alloc

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_free

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_in

)

EXPORT_SYMBOL_GPL

(

nf_ct_invert_tuplepr

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_alter_reply

)

EXPORT_SYMBOL_GPL

(

__nf_ct_refresh_acct

)

EXPORT_SYMBOL_GPL

(

__nf_ct_kill_acct

)

EXPORT_SYMBOL_GPL

(

nf_ct_iterate_cleanup

)

EXPORT_SYMBOL_GPL

(

nf_ct_free_hashtable

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_flush_report

)

EXPORT_SYMBOL_GPL

(

nf_ct_alloc_hashtable

)

EXPORT_SYMBOL_GPL

(

nf_conntrack_set_hashsize

)

EXPORT_SYMBOL_GPL

(

nf_ct_untracked_status_or

)

EXPORT_SYMBOL_GPL

(

nf_ct_nat_offset

)

void init_nf_conntrack_hash_rnd

(

void

)

Definition at line 662 of file nf_conntrack_core.c.

module_param_call	(	hashsize	,
		nf_conntrack_set_hashsize	,
		param_get_uint	,
		&	nf_conntrack_htable_size,
		0600
	)

struct nf_conn* nf_conntrack_alloc ( struct net *  net, u16  zone, const struct nf_conntrack_tuple *  orig, const struct nf_conntrack_tuple *  repl, gfp_t  gfp  )

read

Definition at line 753 of file nf_conntrack_core.c.

void nf_conntrack_alter_reply	(	struct nf_conn *	ct,
		const struct nf_conntrack_tuple *	newreply
	)

Definition at line 1055 of file nf_conntrack_core.c.

void nf_conntrack_cleanup

(

struct net *

net

)

Definition at line 1375 of file nf_conntrack_core.c.

struct nf_conntrack_tuple_hash* nf_conntrack_find_get ( struct net *  net, u16  zone, const struct nf_conntrack_tuple *  tuple  )

read

Definition at line 400 of file nf_conntrack_core.c.

void nf_conntrack_flush_report	(	struct net *	net,
		u32	pid,
		int	report
	)

Definition at line 1304 of file nf_conntrack_core.c.

void nf_conntrack_free

(

struct nf_conn *

ct

)

Definition at line 762 of file nf_conntrack_core.c.

int nf_conntrack_hash_check_insert

(

struct nf_conn *

ct

)

Definition at line 421 of file nf_conntrack_core.c.

unsigned int nf_conntrack_in	(	struct net *	net,
		u_int8_t	pf,
		unsigned int	hooknum,
		struct sk_buff *	skb
	)

Definition at line 932 of file nf_conntrack_core.c.

int nf_conntrack_init

(

struct net *

net

)

Definition at line 1616 of file nf_conntrack_core.c.

int nf_conntrack_set_hashsize	(	const char *	val,
		struct kernel_param *	kp
	)

Definition at line 1417 of file nf_conntrack_core.c.

int nf_conntrack_tuple_taken	(	const struct nf_conntrack_tuple *	tuple,
		const struct nf_conn *	ignored_conntrack
	)

Definition at line 577 of file nf_conntrack_core.c.

void* nf_ct_alloc_hashtable	(	unsigned int *	sizep,
		int	nulls
	)

Definition at line 1393 of file nf_conntrack_core.c.

void nf_ct_delete_from_lists

(

struct nf_conn *

ct

)

Definition at line 240 of file nf_conntrack_core.c.

void nf_ct_free_hashtable	(	void *	hash,
		unsigned int	size
	)

Definition at line 1294 of file nf_conntrack_core.c.

bool nf_ct_get_tuple	(	const struct sk_buff *	skb,
		unsigned int	nhoff,
		unsigned int	dataoff,
		u_int16_t	l3num,
		u_int8_t	protonum,
		struct nf_conntrack_tuple *	tuple,
		const struct nf_conntrack_l3proto *	l3proto,
		const struct nf_conntrack_l4proto *	l4proto
	)

Definition at line 116 of file nf_conntrack_core.c.

bool nf_ct_get_tuplepr	(	const struct sk_buff *	skb,
		unsigned int	nhoff,
		u_int16_t	l3num,
		struct nf_conntrack_tuple *	tuple
	)

Definition at line 138 of file nf_conntrack_core.c.

void nf_ct_insert_dying_list

(

struct nf_conn *

ct

)

Definition at line 277 of file nf_conntrack_core.c.

bool nf_ct_invert_tuple	(	struct nf_conntrack_tuple *	inverse,
		const struct nf_conntrack_tuple *	orig,
		const struct nf_conntrack_l3proto *	l3proto,
		const struct nf_conntrack_l4proto *	l4proto
	)

Definition at line 167 of file nf_conntrack_core.c.

bool nf_ct_invert_tuplepr	(	struct nf_conntrack_tuple *	inverse,
		const struct nf_conntrack_tuple *	orig
	)

Definition at line 1038 of file nf_conntrack_core.c.

void nf_ct_iterate_cleanup	(	struct net *	net,
		int(*)(struct nf_conn *i, void *data)	iter,
		void *	data
	)

Definition at line 1247 of file nf_conntrack_core.c.

void nf_ct_untracked_status_or

(

unsigned long

bits

)

Definition at line 1472 of file nf_conntrack_core.c.

Variable Documentation

unsigned int nf_conntrack_hash_rnd __read_mostly

Definition at line 67 of file nf_conntrack_core.c.

s16(* nf_ct_nat_offset)(const struct nf_conn *ct, enum ip_conntrack_dir dir, u32 seq)

Definition at line 1611 of file nf_conntrack_core.c.

int(* nf_nat_seq_adjust_hook)(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, unsigned int protoff)

Definition at line 58 of file nf_conntrack_core.c.

int(* nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct, enum nf_nat_manip_type manip, const struct nlattr *attr) __read_mostly

Definition at line 53 of file nf_conntrack_core.c.