4e77be4637
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/*
|
|
* This header is used to share core functionality between the
|
|
* standalone connection tracking module, and the compatibility layer's use
|
|
* of connection tracking.
|
|
*
|
|
* 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
|
|
* - generalize L3 protocol dependent part.
|
|
*
|
|
* Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h
|
|
*/
|
|
|
|
#ifndef _NF_CONNTRACK_CORE_H
|
|
#define _NF_CONNTRACK_CORE_H
|
|
|
|
#include <linux/netfilter.h>
|
|
#include <net/netfilter/nf_conntrack_l3proto.h>
|
|
#include <net/netfilter/nf_conntrack_l4proto.h>
|
|
#include <net/netfilter/nf_conntrack_ecache.h>
|
|
|
|
/* This header is used to share core functionality between the
|
|
standalone connection tracking module, and the compatibility layer's use
|
|
of connection tracking. */
|
|
unsigned int nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
|
|
struct sk_buff *skb);
|
|
|
|
int nf_conntrack_init_net(struct net *net);
|
|
void nf_conntrack_cleanup_net(struct net *net);
|
|
void nf_conntrack_cleanup_net_list(struct list_head *net_exit_list);
|
|
|
|
int nf_conntrack_proto_pernet_init(struct net *net);
|
|
void nf_conntrack_proto_pernet_fini(struct net *net);
|
|
|
|
int nf_conntrack_proto_init(void);
|
|
void nf_conntrack_proto_fini(void);
|
|
|
|
int nf_conntrack_init_start(void);
|
|
void nf_conntrack_cleanup_start(void);
|
|
|
|
void nf_conntrack_init_end(void);
|
|
void nf_conntrack_cleanup_end(void);
|
|
|
|
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);
|
|
|
|
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);
|
|
|
|
/* Find a connection corresponding to a tuple. */
|
|
struct nf_conntrack_tuple_hash *
|
|
nf_conntrack_find_get(struct net *net, u16 zone,
|
|
const struct nf_conntrack_tuple *tuple);
|
|
|
|
int __nf_conntrack_confirm(struct sk_buff *skb);
|
|
|
|
/* Confirm a connection: returns NF_DROP if packet must be dropped. */
|
|
static inline int nf_conntrack_confirm(struct sk_buff *skb)
|
|
{
|
|
struct nf_conn *ct = (struct nf_conn *)skb->nfct;
|
|
int ret = NF_ACCEPT;
|
|
|
|
if (ct && !nf_ct_is_untracked(ct)) {
|
|
if (!nf_ct_is_confirmed(ct))
|
|
ret = __nf_conntrack_confirm(skb);
|
|
if (likely(ret == NF_ACCEPT))
|
|
nf_ct_deliver_cached_events(ct);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
|
|
const struct nf_conntrack_l3proto *l3proto,
|
|
const struct nf_conntrack_l4proto *proto);
|
|
|
|
extern spinlock_t nf_conntrack_lock ;
|
|
|
|
#endif /* _NF_CONNTRACK_CORE_H */
|