diff options
author | Martin Josefsson <gandalf@wlug.westbo.se> | 2006-11-28 20:35:01 -0500 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-03 00:31:06 -0500 |
commit | f61801218a58381f498ae5c38ae3eae0bc73e976 (patch) | |
tree | f603222aadac9b1defe9db4e00464379fa13b5cd /include/net/netfilter/nf_conntrack_ecache.h | |
parent | 7e5d03bb9d2b96fdeab0cb0c98b93e6cf7130c96 (diff) |
[NETFILTER]: nf_conntrack: split out the event cache
This patch splits out the event cache into its own file
nf_conntrack_ecache.c
Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net/netfilter/nf_conntrack_ecache.h')
-rw-r--r-- | include/net/netfilter/nf_conntrack_ecache.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_ecache.h b/include/net/netfilter/nf_conntrack_ecache.h new file mode 100644 index 00000000000..b62a8a9ec9d --- /dev/null +++ b/include/net/netfilter/nf_conntrack_ecache.h | |||
@@ -0,0 +1,95 @@ | |||
1 | /* | ||
2 | * connection tracking event cache. | ||
3 | */ | ||
4 | |||
5 | #ifndef _NF_CONNTRACK_ECACHE_H | ||
6 | #define _NF_CONNTRACK_ECACHE_H | ||
7 | #include <net/netfilter/nf_conntrack.h> | ||
8 | |||
9 | #include <linux/notifier.h> | ||
10 | #include <linux/interrupt.h> | ||
11 | #include <net/netfilter/nf_conntrack_expect.h> | ||
12 | |||
13 | #ifdef CONFIG_NF_CONNTRACK_EVENTS | ||
14 | struct nf_conntrack_ecache { | ||
15 | struct nf_conn *ct; | ||
16 | unsigned int events; | ||
17 | }; | ||
18 | DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache); | ||
19 | |||
20 | #define CONNTRACK_ECACHE(x) (__get_cpu_var(nf_conntrack_ecache).x) | ||
21 | |||
22 | extern struct atomic_notifier_head nf_conntrack_chain; | ||
23 | extern struct atomic_notifier_head nf_conntrack_expect_chain; | ||
24 | |||
25 | static inline int nf_conntrack_register_notifier(struct notifier_block *nb) | ||
26 | { | ||
27 | return atomic_notifier_chain_register(&nf_conntrack_chain, nb); | ||
28 | } | ||
29 | |||
30 | static inline int nf_conntrack_unregister_notifier(struct notifier_block *nb) | ||
31 | { | ||
32 | return atomic_notifier_chain_unregister(&nf_conntrack_chain, nb); | ||
33 | } | ||
34 | |||
35 | static inline int | ||
36 | nf_conntrack_expect_register_notifier(struct notifier_block *nb) | ||
37 | { | ||
38 | return atomic_notifier_chain_register(&nf_conntrack_expect_chain, nb); | ||
39 | } | ||
40 | |||
41 | static inline int | ||
42 | nf_conntrack_expect_unregister_notifier(struct notifier_block *nb) | ||
43 | { | ||
44 | return atomic_notifier_chain_unregister(&nf_conntrack_expect_chain, | ||
45 | nb); | ||
46 | } | ||
47 | |||
48 | extern void nf_ct_deliver_cached_events(const struct nf_conn *ct); | ||
49 | extern void __nf_ct_event_cache_init(struct nf_conn *ct); | ||
50 | extern void nf_ct_event_cache_flush(void); | ||
51 | |||
52 | static inline void | ||
53 | nf_conntrack_event_cache(enum ip_conntrack_events event, | ||
54 | const struct sk_buff *skb) | ||
55 | { | ||
56 | struct nf_conn *ct = (struct nf_conn *)skb->nfct; | ||
57 | struct nf_conntrack_ecache *ecache; | ||
58 | |||
59 | local_bh_disable(); | ||
60 | ecache = &__get_cpu_var(nf_conntrack_ecache); | ||
61 | if (ct != ecache->ct) | ||
62 | __nf_ct_event_cache_init(ct); | ||
63 | ecache->events |= event; | ||
64 | local_bh_enable(); | ||
65 | } | ||
66 | |||
67 | static inline void nf_conntrack_event(enum ip_conntrack_events event, | ||
68 | struct nf_conn *ct) | ||
69 | { | ||
70 | if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct)) | ||
71 | atomic_notifier_call_chain(&nf_conntrack_chain, event, ct); | ||
72 | } | ||
73 | |||
74 | static inline void | ||
75 | nf_conntrack_expect_event(enum ip_conntrack_expect_events event, | ||
76 | struct nf_conntrack_expect *exp) | ||
77 | { | ||
78 | atomic_notifier_call_chain(&nf_conntrack_expect_chain, event, exp); | ||
79 | } | ||
80 | |||
81 | #else /* CONFIG_NF_CONNTRACK_EVENTS */ | ||
82 | |||
83 | static inline void nf_conntrack_event_cache(enum ip_conntrack_events event, | ||
84 | const struct sk_buff *skb) {} | ||
85 | static inline void nf_conntrack_event(enum ip_conntrack_events event, | ||
86 | struct nf_conn *ct) {} | ||
87 | static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {} | ||
88 | static inline void | ||
89 | nf_conntrack_expect_event(enum ip_conntrack_expect_events event, | ||
90 | struct nf_conntrack_expect *exp) {} | ||
91 | static inline void nf_ct_event_cache_flush(void) {} | ||
92 | #endif /* CONFIG_NF_CONNTRACK_EVENTS */ | ||
93 | |||
94 | #endif /*_NF_CONNTRACK_ECACHE_H*/ | ||
95 | |||