| #ifndef _NF_CONNTRACK_COUNT_H |
| #define _NF_CONNTRACK_COUNT_H |
| |
| #include <linux/list.h> |
| |
| struct nf_conncount_data; |
| |
| enum nf_conncount_list_add { |
| NF_CONNCOUNT_ADDED, /* list add was ok */ |
| NF_CONNCOUNT_ERR, /* -ENOMEM, must drop skb */ |
| NF_CONNCOUNT_SKIP, /* list is already reclaimed by gc */ |
| }; |
| |
| struct nf_conncount_list { |
| spinlock_t list_lock; |
| struct list_head head; /* connections with the same filtering key */ |
| unsigned int count; /* length of list */ |
| bool dead; |
| }; |
| |
| struct nf_conncount_data *nf_conncount_init(struct net *net, unsigned int family, |
| unsigned int keylen); |
| void nf_conncount_destroy(struct net *net, unsigned int family, |
| struct nf_conncount_data *data); |
| |
| unsigned int nf_conncount_count(struct net *net, |
| struct nf_conncount_data *data, |
| const u32 *key, |
| const struct nf_conntrack_tuple *tuple, |
| const struct nf_conntrack_zone *zone); |
| |
| void nf_conncount_lookup(struct net *net, struct nf_conncount_list *list, |
| const struct nf_conntrack_tuple *tuple, |
| const struct nf_conntrack_zone *zone, |
| bool *addit); |
| |
| void nf_conncount_list_init(struct nf_conncount_list *list); |
| |
| enum nf_conncount_list_add |
| nf_conncount_add(struct nf_conncount_list *list, |
| const struct nf_conntrack_tuple *tuple, |
| const struct nf_conntrack_zone *zone); |
| |
| bool nf_conncount_gc_list(struct net *net, |
| struct nf_conncount_list *list); |
| |
| void nf_conncount_cache_free(struct nf_conncount_list *list); |
| |
| #endif |