nf_conntrack_count.h

 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	unsigned int last_gc_count; /* length of list at most recent gc */
17};
18
19struct nf_conncount_data *nf_conncount_init(struct net *net, unsigned int keylen);
20void nf_conncount_destroy(struct net *net, struct nf_conncount_data *data);
21
22unsigned int nf_conncount_count_skb(struct net *net,
23				    const struct sk_buff *skb,
24				    u16 l3num,
25				    struct nf_conncount_data *data,
26				    const u32 *key);
27
28int nf_conncount_add_skb(struct net *net, const struct sk_buff *skb,
29			 u16 l3num, struct nf_conncount_list *list);
30
31void nf_conncount_list_init(struct nf_conncount_list *list);
32
33bool nf_conncount_gc_list(struct net *net,
34			  struct nf_conncount_list *list);
35
36void nf_conncount_cache_free(struct nf_conncount_list *list);
37
38#endif