1#ifndef _NF_CONNTRACK_COUNT_H
2#define _NF_CONNTRACK_COUNT_H
3
4#include <linux/list.h>
5#include <linux/spinlock.h>
6#include <net/netfilter/nf_conntrack_tuple.h>
7#include <net/netfilter/nf_conntrack_zones.h>
8
9struct nf_conncount_data;
10
11struct nf_conncount_list {
12	spinlock_t list_lock;
13	u32 last_gc;		/* jiffies at most recent gc */
14	struct list_head head;	/* connections with the same filtering key */
15	unsigned int count;	/* length of list */
16};
17
18struct nf_conncount_data *nf_conncount_init(struct net *net, unsigned int family,
19					    unsigned int keylen);
20void nf_conncount_destroy(struct net *net, unsigned int family,
21			  struct nf_conncount_data *data);
22
23unsigned int nf_conncount_count(struct net *net,
24				struct nf_conncount_data *data,
25				const u32 *key,
26				const struct nf_conntrack_tuple *tuple,
27				const struct nf_conntrack_zone *zone);
28
29int nf_conncount_add(struct net *net, struct nf_conncount_list *list,
30		     const struct nf_conntrack_tuple *tuple,
31		     const struct nf_conntrack_zone *zone);
32
33void nf_conncount_list_init(struct nf_conncount_list *list);
34
35bool nf_conncount_gc_list(struct net *net,
36			  struct nf_conncount_list *list);
37
38void nf_conncount_cache_free(struct nf_conncount_list *list);
39
40#endif
41