[deliverable/linux.git] / include / net / netfilter / nf_conntrack.h

/*
 * Connection state tracking for netfilter.  This is separated from,
 * but required by, the (future) NAT layer; it can also be used by an iptables
 * extension.
 *
 * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
 *	- generalize L3 protocol dependent part.
 *
 * Derived from include/linux/netfiter_ipv4/ip_conntrack.h
 */

#ifndef _NF_CONNTRACK_H
#define _NF_CONNTRACK_H

#include <linux/netfilter/nf_conntrack_common.h>

#ifdef __KERNEL__
#include <linux/bitops.h>
#include <linux/compiler.h>
#include <asm/atomic.h>

#include <linux/netfilter/nf_conntrack_tcp.h>
#include <linux/netfilter/nf_conntrack_dccp.h>
#include <linux/netfilter/nf_conntrack_sctp.h>
#include <linux/netfilter/nf_conntrack_proto_gre.h>
#include <net/netfilter/ipv4/nf_conntrack_icmp.h>
#include <net/netfilter/ipv6/nf_conntrack_icmpv6.h>

#include <net/netfilter/nf_conntrack_tuple.h>

/* per conntrack: protocol private data */
union nf_conntrack_proto {
	/* insert conntrack proto private data here */
	struct nf_ct_dccp dccp;
	struct ip_ct_sctp sctp;
	struct ip_ct_tcp tcp;
	struct ip_ct_icmp icmp;
	struct nf_ct_icmpv6 icmpv6;
	struct nf_ct_gre gre;
};

union nf_conntrack_expect_proto {
	/* insert expect proto private data here */
};

/* Add protocol helper include file here */
#include <linux/netfilter/nf_conntrack_ftp.h>
#include <linux/netfilter/nf_conntrack_pptp.h>
#include <linux/netfilter/nf_conntrack_h323.h>
#include <linux/netfilter/nf_conntrack_sane.h>
#include <linux/netfilter/nf_conntrack_sip.h>

/* per conntrack: application helper private data */
union nf_conntrack_help {
	/* insert conntrack helper private data (master) here */
	struct nf_ct_ftp_master ct_ftp_info;
	struct nf_ct_pptp_master ct_pptp_info;
	struct nf_ct_h323_master ct_h323_info;
	struct nf_ct_sane_master ct_sane_info;
	struct nf_ct_sip_master ct_sip_info;
};

#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/timer.h>

#ifdef CONFIG_NETFILTER_DEBUG
#define NF_CT_ASSERT(x)		WARN_ON(!(x))
#else
#define NF_CT_ASSERT(x)
#endif

struct nf_conntrack_helper;

/* Must be kept in sync with the classes defined by helpers */
#define NF_CT_MAX_EXPECT_CLASSES	3

/* nf_conn feature for connections that have a helper */
struct nf_conn_help {
	/* Helper. if any */
	struct nf_conntrack_helper *helper;

	union nf_conntrack_help help;

	struct hlist_head expectations;

	/* Current number of expected connections */
	u8 expecting[NF_CT_MAX_EXPECT_CLASSES];
};

#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>

struct nf_conn {
	/* Usage count in here is 1 for hash table/destruct timer, 1 per skb,
           plus 1 for any connection(s) we are `master' for */
	struct nf_conntrack ct_general;

	/* XXX should I move this to the tail ? - Y.K */
	/* These are my tuples; original and reply */
	struct nf_conntrack_tuple_hash tuplehash[IP_CT_DIR_MAX];

	/* Have we seen traffic both ways yet? (bitset) */
	unsigned long status;

	/* If we were expected by an expectation, this will be it */
	struct nf_conn *master;

	/* Timer function; drops refcnt when it goes off. */
	struct timer_list timeout;

#if defined(CONFIG_NF_CONNTRACK_MARK)
	u_int32_t mark;
#endif

#ifdef CONFIG_NF_CONNTRACK_SECMARK
	u_int32_t secmark;
#endif

	/* Storage reserved for other modules: */
	union nf_conntrack_proto proto;

	/* Extensions */
	struct nf_ct_ext *ext;
#ifdef CONFIG_NET_NS
	struct net *ct_net;
#endif
};

static inline struct nf_conn *
nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash)
{
	return container_of(hash, struct nf_conn,
			    tuplehash[hash->tuple.dst.dir]);
}

static inline u_int16_t nf_ct_l3num(const struct nf_conn *ct)
{
	return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
}

static inline u_int8_t nf_ct_protonum(const struct nf_conn *ct)
{
	return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum;
}

#define nf_ct_tuple(ct, dir) (&(ct)->tuplehash[dir].tuple)

/* get master conntrack via master expectation */
#define master_ct(conntr) (conntr->master)

extern struct net init_net;

static inline struct net *nf_ct_net(const struct nf_conn *ct)
{
#ifdef CONFIG_NET_NS
	return ct->ct_net;
#else
	return &init_net;
#endif
}

/* Alter reply tuple (maybe alter helper). */
extern void
nf_conntrack_alter_reply(struct nf_conn *ct,
			 const struct nf_conntrack_tuple *newreply);

/* Is this tuple taken? (ignoring any belonging to the given
   conntrack). */
extern int
nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
			 const struct nf_conn *ignored_conntrack);

/* Return conntrack_info and tuple hash for given skb. */
static inline struct nf_conn *
nf_ct_get(const struct sk_buff *skb, enum ip_conntrack_info *ctinfo)
{
	*ctinfo = skb->nfctinfo;
	return (struct nf_conn *)skb->nfct;
}

/* decrement reference count on a conntrack */
static inline void nf_ct_put(struct nf_conn *ct)
{
	NF_CT_ASSERT(ct);
	nf_conntrack_put(&ct->ct_general);
}

/* Protocol module loading */
extern int nf_ct_l3proto_try_module_get(unsigned short l3proto);
extern void nf_ct_l3proto_module_put(unsigned short l3proto);

/*
 * Allocate a hashtable of hlist_head (if nulls == 0),
 * or hlist_nulls_head (if nulls == 1)
 */
extern void *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced, int nulls);

extern void nf_ct_free_hashtable(void *hash, int vmalloced, unsigned int size);

extern struct nf_conntrack_tuple_hash *
__nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);

extern void nf_conntrack_hash_insert(struct nf_conn *ct);

extern void nf_conntrack_flush(struct net *net, u32 pid, int report);

extern bool nf_ct_get_tuplepr(const struct sk_buff *skb,
			      unsigned int nhoff, u_int16_t l3num,
			      struct nf_conntrack_tuple *tuple);
extern bool nf_ct_invert_tuplepr(struct nf_conntrack_tuple *inverse,
				 const struct nf_conntrack_tuple *orig);

extern 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);

/* Refresh conntrack for this many jiffies and do accounting */
static inline void nf_ct_refresh_acct(struct nf_conn *ct,
				      enum ip_conntrack_info ctinfo,
				      const struct sk_buff *skb,
				      unsigned long extra_jiffies)
{
	__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1);
}

/* Refresh conntrack for this many jiffies */
static inline void nf_ct_refresh(struct nf_conn *ct,
				 const struct sk_buff *skb,
				 unsigned long extra_jiffies)
{
	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
}

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

/* kill conntrack and do accounting */
static inline bool nf_ct_kill_acct(struct nf_conn *ct,
				   enum ip_conntrack_info ctinfo,
				   const struct sk_buff *skb)
{
	return __nf_ct_kill_acct(ct, ctinfo, skb, 1);
}

/* kill conntrack without accounting */
static inline bool nf_ct_kill(struct nf_conn *ct)
{
	return __nf_ct_kill_acct(ct, 0, NULL, 0);
}

/* These are for NAT.  Icky. */
/* Update TCP window tracking data when NAT mangles the packet */
extern void nf_conntrack_tcp_update(const struct sk_buff *skb,
				    unsigned int dataoff,
				    struct nf_conn *ct,
				    int dir);

/* Fake conntrack entry for untracked connections */
extern struct nf_conn nf_conntrack_untracked;

/* Iterate over all conntracks: if iter returns true, it's deleted. */
extern void
nf_ct_iterate_cleanup(struct net *net, int (*iter)(struct nf_conn *i, void *data), void *data);
extern void nf_conntrack_free(struct nf_conn *ct);
extern struct nf_conn *
nf_conntrack_alloc(struct net *net,
		   const struct nf_conntrack_tuple *orig,
		   const struct nf_conntrack_tuple *repl,
		   gfp_t gfp);

/* It's confirmed if it is, or has been in the hash table. */
static inline int nf_ct_is_confirmed(struct nf_conn *ct)
{
	return test_bit(IPS_CONFIRMED_BIT, &ct->status);
}

static inline int nf_ct_is_dying(struct nf_conn *ct)
{
	return test_bit(IPS_DYING_BIT, &ct->status);
}

static inline int nf_ct_is_untracked(const struct sk_buff *skb)
{
	return (skb->nfct == &nf_conntrack_untracked.ct_general);
}

extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);
extern unsigned int nf_conntrack_htable_size;
extern unsigned int nf_conntrack_max;

#define NF_CT_STAT_INC(net, count)	\
	(per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++)
#define NF_CT_STAT_INC_ATOMIC(net, count)		\
do {							\
	local_bh_disable();				\
	per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++;	\
	local_bh_enable();				\
} while (0)

#define MODULE_ALIAS_NFCT_HELPER(helper) \
        MODULE_ALIAS("nfct-helper-" helper)

#endif /* __KERNEL__ */
#endif /* _NF_CONNTRACK_H */
Commit	Line	Data
9fb9cbb1 YK	1	/*
	2	* Connection state tracking for netfilter. This is separated from,
	3	* but required by, the (future) NAT layer; it can also be used by an iptables
	4	* extension.
	5	*
	6	* 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
	7	* - generalize L3 protocol dependent part.
	8	*
	9	* Derived from include/linux/netfiter_ipv4/ip_conntrack.h
	10	*/
	11
	12	#ifndef _NF_CONNTRACK_H
	13	#define _NF_CONNTRACK_H
	14
	15	#include <linux/netfilter/nf_conntrack_common.h>
	16
	17	#ifdef __KERNEL__
9fb9cbb1 YK	18	#include <linux/bitops.h>
	19	#include <linux/compiler.h>
	20	#include <asm/atomic.h>
	21
	22	#include <linux/netfilter/nf_conntrack_tcp.h>
2bc78049	23	#include <linux/netfilter/nf_conntrack_dccp.h>
9fb9cbb1	24	#include <linux/netfilter/nf_conntrack_sctp.h>
f09943fe	25	#include <linux/netfilter/nf_conntrack_proto_gre.h>
9fb9cbb1 YK	26	#include <net/netfilter/ipv4/nf_conntrack_icmp.h>
	27	#include <net/netfilter/ipv6/nf_conntrack_icmpv6.h>
	28
	29	#include <net/netfilter/nf_conntrack_tuple.h>
	30
	31	/* per conntrack: protocol private data */
	32	union nf_conntrack_proto {
	33	/* insert conntrack proto private data here */
2bc78049	34	struct nf_ct_dccp dccp;
9fb9cbb1 YK	35	struct ip_ct_sctp sctp;
	36	struct ip_ct_tcp tcp;
	37	struct ip_ct_icmp icmp;
	38	struct nf_ct_icmpv6 icmpv6;
f09943fe	39	struct nf_ct_gre gre;
9fb9cbb1 YK	40	};
	41
	42	union nf_conntrack_expect_proto {
	43	/* insert expect proto private data here */
	44	};
	45
	46	/* Add protocol helper include file here */
	47	#include <linux/netfilter/nf_conntrack_ftp.h>
f09943fe	48	#include <linux/netfilter/nf_conntrack_pptp.h>
f587de0e	49	#include <linux/netfilter/nf_conntrack_h323.h>
6fecd198	50	#include <linux/netfilter/nf_conntrack_sane.h>
0f32a40f	51	#include <linux/netfilter/nf_conntrack_sip.h>
9fb9cbb1 YK	52
	53	/* per conntrack: application helper private data */
	54	union nf_conntrack_help {
	55	/* insert conntrack helper private data (master) here */
55a73324	56	struct nf_ct_ftp_master ct_ftp_info;
f09943fe	57	struct nf_ct_pptp_master ct_pptp_info;
f587de0e	58	struct nf_ct_h323_master ct_h323_info;
6fecd198	59	struct nf_ct_sane_master ct_sane_info;
0f32a40f	60	struct nf_ct_sip_master ct_sip_info;
9fb9cbb1 YK	61	};
	62
	63	#include <linux/types.h>
	64	#include <linux/skbuff.h>
d7fe0f24	65	#include <linux/timer.h>
9fb9cbb1 YK	66
9fb9cbb1 YK	67	#ifdef CONFIG_NETFILTER_DEBUG
55871d04	68	#define NF_CT_ASSERT(x) WARN_ON(!(x))
9fb9cbb1 YK	69	#else
	70	#define NF_CT_ASSERT(x)
	71	#endif
	72
	73	struct nf_conntrack_helper;
	74
6002f266	75	/* Must be kept in sync with the classes defined by helpers */
0d0ab037	76	#define NF_CT_MAX_EXPECT_CLASSES 3
6002f266	77
dc808fe2 HW	78	/* nf_conn feature for connections that have a helper */
	79	struct nf_conn_help {
	80	/* Helper. if any */
	81	struct nf_conntrack_helper *helper;
	82
	83	union nf_conntrack_help help;
	84
b560580a PM	85	struct hlist_head expectations;
b560580a PM	86
dc808fe2	87	/* Current number of expected connections */
6002f266	88	u8 expecting[NF_CT_MAX_EXPECT_CLASSES];
dc808fe2 HW	89	};
dc808fe2 HW	90
9fb9cbb1	91	#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
f8eb24a8 PM	92	#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
f8eb24a8 PM	93
ea781f19	94	struct nf_conn {
9fb9cbb1 YK	95	/* Usage count in here is 1 for hash table/destruct timer, 1 per skb,
	96	plus 1 for any connection(s) we are `master' for */
	97	struct nf_conntrack ct_general;
	98
	99	/* XXX should I move this to the tail ? - Y.K */
	100	/* These are my tuples; original and reply */
	101	struct nf_conntrack_tuple_hash tuplehash[IP_CT_DIR_MAX];
	102
	103	/* Have we seen traffic both ways yet? (bitset) */
	104	unsigned long status;
	105
dc808fe2 HW	106	/* If we were expected by an expectation, this will be it */
	107	struct nf_conn *master;
	108
9fb9cbb1 YK	109	/* Timer function; drops refcnt when it goes off. */
	110	struct timer_list timeout;
	111
9fb9cbb1 YK	112	#if defined(CONFIG_NF_CONNTRACK_MARK)
	113	u_int32_t mark;
	114	#endif
	115
7c9728c3 JM	116	#ifdef CONFIG_NF_CONNTRACK_SECMARK
	117	u_int32_t secmark;
	118	#endif
	119
dc808fe2 HW	120	/* Storage reserved for other modules: */
dc808fe2 HW	121	union nf_conntrack_proto proto;
9fb9cbb1	122
ecfab2c9 YK	123	/* Extensions */
ecfab2c9 YK	124	struct nf_ct_ext *ext;
5a1fb391 AD	125	#ifdef CONFIG_NET_NS
	126	struct net *ct_net;
	127	#endif
9fb9cbb1 YK	128	};
9fb9cbb1 YK	129
9fb9cbb1 YK	130	static inline struct nf_conn *
	131	nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash)
	132	{
	133	return container_of(hash, struct nf_conn,
	134	tuplehash[hash->tuple.dst.dir]);
	135	}
	136
5e8fbe2a PM	137	static inline u_int16_t nf_ct_l3num(const struct nf_conn *ct)
	138	{
	139	return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
	140	}
	141
	142	static inline u_int8_t nf_ct_protonum(const struct nf_conn *ct)
	143	{
	144	return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum;
	145	}
	146
f2f3e38c PNA	147	#define nf_ct_tuple(ct, dir) (&(ct)->tuplehash[dir].tuple)
f2f3e38c PNA	148
9fb9cbb1 YK	149	/* get master conntrack via master expectation */
	150	#define master_ct(conntr) (conntr->master)
	151
5a1fb391 AD	152	extern struct net init_net;
	153
	154	static inline struct net nf_ct_net(const struct nf_conn ct)
	155	{
	156	#ifdef CONFIG_NET_NS
	157	return ct->ct_net;
	158	#else
	159	return &init_net;
	160	#endif
	161	}
	162
9fb9cbb1 YK	163	/* Alter reply tuple (maybe alter helper). */
9fb9cbb1 YK	164	extern void
c88130bc	165	nf_conntrack_alter_reply(struct nf_conn *ct,
9fb9cbb1 YK	166	const struct nf_conntrack_tuple *newreply);
	167
	168	/* Is this tuple taken? (ignoring any belonging to the given
	169	conntrack). */
	170	extern int
	171	nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
	172	const struct nf_conn *ignored_conntrack);
	173
	174	/* Return conntrack_info and tuple hash for given skb. */
	175	static inline struct nf_conn *
	176	nf_ct_get(const struct sk_buff skb, enum ip_conntrack_info ctinfo)
	177	{
	178	*ctinfo = skb->nfctinfo;
	179	return (struct nf_conn *)skb->nfct;
	180	}
	181
	182	/* decrement reference count on a conntrack */
	183	static inline void nf_ct_put(struct nf_conn *ct)
	184	{
	185	NF_CT_ASSERT(ct);
	186	nf_conntrack_put(&ct->ct_general);
	187	}
	188
b9f78f9f PNA	189	/* Protocol module loading */
	190	extern int nf_ct_l3proto_try_module_get(unsigned short l3proto);
	191	extern void nf_ct_l3proto_module_put(unsigned short l3proto);
	192
ea781f19 ED	193	/*
	194	* Allocate a hashtable of hlist_head (if nulls == 0),
	195	* or hlist_nulls_head (if nulls == 1)
	196	*/
	197	extern void nf_ct_alloc_hashtable(unsigned int sizep, int *vmalloced, int nulls);
	198
	199	extern void nf_ct_free_hashtable(void *hash, int vmalloced, unsigned int size);
ac565e5f	200
c1d10adb	201	extern struct nf_conntrack_tuple_hash *
400dad39	202	__nf_conntrack_find(struct net net, const struct nf_conntrack_tuple tuple);
c1d10adb PNA	203
	204	extern void nf_conntrack_hash_insert(struct nf_conn *ct);
	205
19abb7b0	206	extern void nf_conntrack_flush(struct net *net, u32 pid, int report);
c1d10adb	207
5f2b4c90 JE	208	extern bool nf_ct_get_tuplepr(const struct sk_buff *skb,
	209	unsigned int nhoff, u_int16_t l3num,
	210	struct nf_conntrack_tuple *tuple);
	211	extern bool nf_ct_invert_tuplepr(struct nf_conntrack_tuple *inverse,
	212	const struct nf_conntrack_tuple *orig);
9fb9cbb1 YK	213
	214	extern void __nf_ct_refresh_acct(struct nf_conn *ct,
	215	enum ip_conntrack_info ctinfo,
	216	const struct sk_buff *skb,
	217	unsigned long extra_jiffies,
	218	int do_acct);
	219
	220	/* Refresh conntrack for this many jiffies and do accounting */
	221	static inline void nf_ct_refresh_acct(struct nf_conn *ct,
	222	enum ip_conntrack_info ctinfo,
	223	const struct sk_buff *skb,
	224	unsigned long extra_jiffies)
	225	{
	226	__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1);
	227	}
	228
	229	/* Refresh conntrack for this many jiffies */
	230	static inline void nf_ct_refresh(struct nf_conn *ct,
	231	const struct sk_buff *skb,
	232	unsigned long extra_jiffies)
	233	{
	234	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
	235	}
	236
4c889498 DM	237	extern bool __nf_ct_kill_acct(struct nf_conn *ct,
	238	enum ip_conntrack_info ctinfo,
	239	const struct sk_buff *skb,
	240	int do_acct);
718d4ad9 FH	241
718d4ad9 FH	242	/* kill conntrack and do accounting */
4c889498 DM	243	static inline bool nf_ct_kill_acct(struct nf_conn *ct,
	244	enum ip_conntrack_info ctinfo,
	245	const struct sk_buff *skb)
718d4ad9	246	{
4c889498	247	return __nf_ct_kill_acct(ct, ctinfo, skb, 1);
718d4ad9 FH	248	}
	249
	250	/* kill conntrack without accounting */
4c889498	251	static inline bool nf_ct_kill(struct nf_conn *ct)
718d4ad9	252	{
4c889498	253	return __nf_ct_kill_acct(ct, 0, NULL, 0);
718d4ad9	254	}
51091764	255
9fb9cbb1 YK	256	/* These are for NAT. Icky. */
9fb9cbb1 YK	257	/* Update TCP window tracking data when NAT mangles the packet */
82f568fc	258	extern void nf_conntrack_tcp_update(const struct sk_buff *skb,
9fb9cbb1	259	unsigned int dataoff,
c88130bc	260	struct nf_conn *ct,
9fb9cbb1 YK	261	int dir);
9fb9cbb1 YK	262
9fb9cbb1 YK	263	/* Fake conntrack entry for untracked connections */
	264	extern struct nf_conn nf_conntrack_untracked;
	265
9fb9cbb1 YK	266	/* Iterate over all conntracks: if iter returns true, it's deleted. */
9fb9cbb1 YK	267	extern void
400dad39	268	nf_ct_iterate_cleanup(struct net net, int (iter)(struct nf_conn i, void data), void *data);
9fb9cbb1 YK	269	extern void nf_conntrack_free(struct nf_conn *ct);
9fb9cbb1 YK	270	extern struct nf_conn *
5a1fb391 AD	271	nf_conntrack_alloc(struct net *net,
5a1fb391 AD	272	const struct nf_conntrack_tuple *orig,
b891c5a8 PNA	273	const struct nf_conntrack_tuple *repl,
b891c5a8 PNA	274	gfp_t gfp);
9fb9cbb1 YK	275
	276	/* It's confirmed if it is, or has been in the hash table. */
	277	static inline int nf_ct_is_confirmed(struct nf_conn *ct)
	278	{
	279	return test_bit(IPS_CONFIRMED_BIT, &ct->status);
	280	}
	281
	282	static inline int nf_ct_is_dying(struct nf_conn *ct)
	283	{
	284	return test_bit(IPS_DYING_BIT, &ct->status);
	285	}
	286
587aa641 PM	287	static inline int nf_ct_is_untracked(const struct sk_buff *skb)
	288	{
	289	return (skb->nfct == &nf_conntrack_untracked.ct_general);
	290	}
	291
fae718dd	292	extern int nf_conntrack_set_hashsize(const char val, struct kernel_param kp);
9fb9cbb1	293	extern unsigned int nf_conntrack_htable_size;
e478075c	294	extern unsigned int nf_conntrack_max;
9fb9cbb1	295
0d55af87 AD	296	#define NF_CT_STAT_INC(net, count) \
	297	(per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++)
	298	#define NF_CT_STAT_INC_ATOMIC(net, count) \
c0e912d7 PM	299	do { \
c0e912d7 PM	300	local_bh_disable(); \
0d55af87	301	per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++; \
c0e912d7 PM	302	local_bh_enable(); \
c0e912d7 PM	303	} while (0)
9fb9cbb1	304
4dc06f96 PNA	305	#define MODULE_ALIAS_NFCT_HELPER(helper) \
	306	MODULE_ALIAS("nfct-helper-" helper)
	307
9fb9cbb1 YK	308	#endif /* __KERNEL__ */
9fb9cbb1 YK	309	#endif /* _NF_CONNTRACK_H */