include/net/netfilter/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
   9 struct nf_conncount_data;
  10
  11 struct 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
  18 struct nf_conncount_data *nf_conncount_init(struct net *net, unsigned int family,
  19                                             unsigned int keylen);
  20 void nf_conncount_destroy(struct net *net, unsigned int family,
  21                           struct nf_conncount_data *data);
  22
  23 unsigned 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
  29 int 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
  33 void nf_conncount_list_init(struct nf_conncount_list *list);
  34
  35 bool nf_conncount_gc_list(struct net *net,
  36                           struct nf_conncount_list *list);
  37
  38 void nf_conncount_cache_free(struct nf_conncount_list *list);
  39
  40 #endif