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 41