2 * connection tracking event cache.
5 #ifndef _NF_CONNTRACK_ECACHE_H
6 #define _NF_CONNTRACK_ECACHE_H
7 #include <net/netfilter/nf_conntrack.h>
9 #include <linux/notifier.h>
10 #include <linux/interrupt.h>
11 #include <net/net_namespace.h>
12 #include <net/netfilter/nf_conntrack_expect.h>
14 #ifdef CONFIG_NF_CONNTRACK_EVENTS
15 struct nf_conntrack_ecache
{
20 extern struct atomic_notifier_head nf_conntrack_chain
;
21 extern int nf_conntrack_register_notifier(struct notifier_block
*nb
);
22 extern int nf_conntrack_unregister_notifier(struct notifier_block
*nb
);
24 extern void nf_ct_deliver_cached_events(const struct nf_conn
*ct
);
25 extern void __nf_ct_event_cache_init(struct nf_conn
*ct
);
26 extern void nf_ct_event_cache_flush(struct net
*net
);
29 nf_conntrack_event_cache(enum ip_conntrack_events event
, struct nf_conn
*ct
)
31 struct net
*net
= nf_ct_net(ct
);
32 struct nf_conntrack_ecache
*ecache
;
35 ecache
= per_cpu_ptr(net
->ct
.ecache
, raw_smp_processor_id());
37 __nf_ct_event_cache_init(ct
);
38 ecache
->events
|= event
;
42 static inline void nf_conntrack_event(enum ip_conntrack_events event
,
45 if (nf_ct_is_confirmed(ct
) && !nf_ct_is_dying(ct
))
46 atomic_notifier_call_chain(&nf_conntrack_chain
, event
, ct
);
49 extern struct atomic_notifier_head nf_ct_expect_chain
;
50 extern int nf_ct_expect_register_notifier(struct notifier_block
*nb
);
51 extern int nf_ct_expect_unregister_notifier(struct notifier_block
*nb
);
54 nf_ct_expect_event(enum ip_conntrack_expect_events event
,
55 struct nf_conntrack_expect
*exp
)
57 atomic_notifier_call_chain(&nf_ct_expect_chain
, event
, exp
);
60 extern int nf_conntrack_ecache_init(struct net
*net
);
61 extern void nf_conntrack_ecache_fini(struct net
*net
);
63 #else /* CONFIG_NF_CONNTRACK_EVENTS */
65 static inline void nf_conntrack_event_cache(enum ip_conntrack_events event
,
66 struct nf_conn
*ct
) {}
67 static inline void nf_conntrack_event(enum ip_conntrack_events event
,
68 struct nf_conn
*ct
) {}
69 static inline void nf_ct_deliver_cached_events(const struct nf_conn
*ct
) {}
70 static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event
,
71 struct nf_conntrack_expect
*exp
) {}
72 static inline void nf_ct_event_cache_flush(struct net
*net
) {}
74 static inline int nf_conntrack_ecache_init(struct net
*net
)
79 static inline void nf_conntrack_ecache_fini(struct net
*net
)
82 #endif /* CONFIG_NF_CONNTRACK_EVENTS */
84 #endif /*_NF_CONNTRACK_ECACHE_H*/