2017-12-09 13:01:08 -07:00
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#ifndef _NF_CONNTRACK_COUNT_H
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#define _NF_CONNTRACK_COUNT_H
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2018-07-02 18:33:40 -06:00
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#include <linux/list.h>
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2017-12-09 13:01:08 -07:00
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struct nf_conncount_data;
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2018-07-02 18:33:44 -06:00
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enum nf_conncount_list_add {
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NF_CONNCOUNT_ADDED, /* list add was ok */
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NF_CONNCOUNT_ERR, /* -ENOMEM, must drop skb */
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NF_CONNCOUNT_SKIP, /* list is already reclaimed by gc */
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};
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2018-07-02 18:33:40 -06:00
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struct nf_conncount_list {
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spinlock_t list_lock;
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2018-07-02 18:33:40 -06:00
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struct list_head head; /* connections with the same filtering key */
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unsigned int count; /* length of list */
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bool dead;
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};
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2017-12-09 13:01:08 -07:00
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struct nf_conncount_data *nf_conncount_init(struct net *net, unsigned int family,
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unsigned int keylen);
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void nf_conncount_destroy(struct net *net, unsigned int family,
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struct nf_conncount_data *data);
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unsigned int nf_conncount_count(struct net *net,
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struct nf_conncount_data *data,
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const u32 *key,
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const struct nf_conntrack_tuple *tuple,
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const struct nf_conntrack_zone *zone);
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2018-06-02 15:38:47 -06:00
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2018-07-02 18:33:41 -06:00
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void nf_conncount_lookup(struct net *net, struct nf_conncount_list *list,
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const struct nf_conntrack_tuple *tuple,
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const struct nf_conntrack_zone *zone,
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bool *addit);
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2018-07-02 18:33:40 -06:00
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void nf_conncount_list_init(struct nf_conncount_list *list);
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2018-07-02 18:33:44 -06:00
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enum nf_conncount_list_add
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nf_conncount_add(struct nf_conncount_list *list,
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const struct nf_conntrack_tuple *tuple,
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const struct nf_conntrack_zone *zone);
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2018-06-02 15:38:47 -06:00
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2018-07-02 18:33:44 -06:00
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bool nf_conncount_gc_list(struct net *net,
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struct nf_conncount_list *list);
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2018-07-02 18:33:40 -06:00
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void nf_conncount_cache_free(struct nf_conncount_list *list);
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2018-06-02 15:38:47 -06:00
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2017-12-09 13:01:08 -07:00
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#endif
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