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- /*
- * This header is used to share core functionality between the
- * standalone connection tracking module, and the compatibility layer's use
- * of connection tracking.
- *
- * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
- * - generalize L3 protocol dependent part.
- *
- * Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h
- */
- #ifndef _NF_CONNTRACK_CORE_H
- #define _NF_CONNTRACK_CORE_H
- #include <linux/netfilter.h>
- #include <net/netfilter/nf_conntrack_l3proto.h>
- #include <net/netfilter/nf_conntrack_l4proto.h>
- #include <net/netfilter/nf_conntrack_ecache.h>
- /* This header is used to share core functionality between the
- standalone connection tracking module, and the compatibility layer's use
- of connection tracking. */
- unsigned int nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
- struct sk_buff *skb);
- int nf_conntrack_init_net(struct net *net);
- void nf_conntrack_cleanup_net(struct net *net);
- void nf_conntrack_cleanup_net_list(struct list_head *net_exit_list);
- int nf_conntrack_proto_pernet_init(struct net *net);
- void nf_conntrack_proto_pernet_fini(struct net *net);
- int nf_conntrack_proto_init(void);
- void nf_conntrack_proto_fini(void);
- int nf_conntrack_init_start(void);
- void nf_conntrack_cleanup_start(void);
- void nf_conntrack_init_end(void);
- void nf_conntrack_cleanup_end(void);
- bool nf_ct_get_tuple(const struct sk_buff *skb, unsigned int nhoff,
- unsigned int dataoff, u_int16_t l3num, u_int8_t protonum,
- struct net *net,
- struct nf_conntrack_tuple *tuple,
- const struct nf_conntrack_l3proto *l3proto,
- const struct nf_conntrack_l4proto *l4proto);
- bool nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
- const struct nf_conntrack_tuple *orig,
- const struct nf_conntrack_l3proto *l3proto,
- const struct nf_conntrack_l4proto *l4proto);
- /* Find a connection corresponding to a tuple. */
- struct nf_conntrack_tuple_hash *
- nf_conntrack_find_get(struct net *net,
- const struct nf_conntrack_zone *zone,
- const struct nf_conntrack_tuple *tuple);
- int __nf_conntrack_confirm(struct sk_buff *skb);
- /* Confirm a connection: returns NF_DROP if packet must be dropped. */
- static inline int nf_conntrack_confirm(struct sk_buff *skb)
- {
- struct nf_conn *ct = (struct nf_conn *)skb->nfct;
- int ret = NF_ACCEPT;
- if (ct && !nf_ct_is_untracked(ct)) {
- if (!nf_ct_is_confirmed(ct))
- ret = __nf_conntrack_confirm(skb);
- if (likely(ret == NF_ACCEPT))
- nf_ct_deliver_cached_events(ct);
- }
- return ret;
- }
- void
- print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
- const struct nf_conntrack_l3proto *l3proto,
- const struct nf_conntrack_l4proto *proto);
- #ifdef CONFIG_LOCKDEP
- # define CONNTRACK_LOCKS 8
- #else
- # define CONNTRACK_LOCKS 1024
- #endif
- extern spinlock_t nf_conntrack_locks[CONNTRACK_LOCKS];
- extern spinlock_t nf_conntrack_expect_lock;
- #endif /* _NF_CONNTRACK_CORE_H */
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