git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 9fb9cbb1 YK |
1 | /* |
| 2 | * This header is used to share core functionality between the | |
| 3 | * standalone connection tracking module, and the compatibility layer's use | |
| 4 | * of connection tracking. | |
| 5 | * | |
| 6 | * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp> | |
| 7 | * - generalize L3 protocol dependent part. | |
| 8 | * | |
| 9 | * Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _NF_CONNTRACK_CORE_H | |
| 13 | #define _NF_CONNTRACK_CORE_H | |
| 14 | ||
| 15 | #include <linux/netfilter.h> | |
| 77ab9cff | 16 | #include <net/netfilter/nf_conntrack_l3proto.h> |
| 605dcad6 | 17 | #include <net/netfilter/nf_conntrack_l4proto.h> |
| f6180121 | 18 | #include <net/netfilter/nf_conntrack_ecache.h> |
| 9fb9cbb1 YK |
19 | |
| 20 | /* This header is used to share core functionality between the | |
| 21 | standalone connection tracking module, and the compatibility layer's use | |
| 22 | of connection tracking. */ | |
| a702a65f AD |
23 | extern unsigned int nf_conntrack_in(struct net *net, |
| 24 | u_int8_t pf, | |
| 9fb9cbb1 | 25 | unsigned int hooknum, |
| 3db05fea | 26 | struct sk_buff *skb); |
| 9fb9cbb1 | 27 | |
| dfdb8d79 AD |
28 | extern int nf_conntrack_init(struct net *net); |
| 29 | extern void nf_conntrack_cleanup(struct net *net); | |
| 9fb9cbb1 | 30 | |
| ac5357eb PM |
31 | extern int nf_conntrack_proto_init(void); |
| 32 | extern void nf_conntrack_proto_fini(void); | |
| 33 | ||
| 5f2b4c90 | 34 | extern bool |
| 9fb9cbb1 YK |
35 | nf_ct_get_tuple(const struct sk_buff *skb, |
| 36 | unsigned int nhoff, | |
| 37 | unsigned int dataoff, | |
| 38 | u_int16_t l3num, | |
| 39 | u_int8_t protonum, | |
| 40 | struct nf_conntrack_tuple *tuple, | |
| 41 | const struct nf_conntrack_l3proto *l3proto, | |
| 605dcad6 | 42 | const struct nf_conntrack_l4proto *l4proto); |
| 9fb9cbb1 | 43 | |
| 5f2b4c90 | 44 | extern bool |
| 9fb9cbb1 YK |
45 | nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse, |
| 46 | const struct nf_conntrack_tuple *orig, | |
| 47 | const struct nf_conntrack_l3proto *l3proto, | |
| 605dcad6 | 48 | const struct nf_conntrack_l4proto *l4proto); |
| 9fb9cbb1 YK |
49 | |
| 50 | /* Find a connection corresponding to a tuple. */ | |
| 51 | extern struct nf_conntrack_tuple_hash * | |
| 5d0aa2cc PM |
52 | nf_conntrack_find_get(struct net *net, u16 zone, |
| 53 | const struct nf_conntrack_tuple *tuple); | |
| 9fb9cbb1 | 54 | |
| 3db05fea | 55 | extern int __nf_conntrack_confirm(struct sk_buff *skb); |
| 9fb9cbb1 YK |
56 | |
| 57 | /* Confirm a connection: returns NF_DROP if packet must be dropped. */ | |
| 3db05fea | 58 | static inline int nf_conntrack_confirm(struct sk_buff *skb) |
| 9fb9cbb1 | 59 | { |
| 3db05fea | 60 | struct nf_conn *ct = (struct nf_conn *)skb->nfct; |
| 9fb9cbb1 YK |
61 | int ret = NF_ACCEPT; |
| 62 | ||
| 5962fc6d | 63 | if (ct && ct != &nf_conntrack_untracked) { |
| ec68e97d | 64 | if (!nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct)) |
| 3db05fea | 65 | ret = __nf_conntrack_confirm(skb); |
| b1e93a68 PNA |
66 | if (likely(ret == NF_ACCEPT)) |
| 67 | nf_ct_deliver_cached_events(ct); | |
| 9fb9cbb1 YK |
68 | } |
| 69 | return ret; | |
| 70 | } | |
| 71 | ||
| 77ab9cff MJ |
72 | int |
| 73 | print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, | |
| 32948588 JE |
74 | const struct nf_conntrack_l3proto *l3proto, |
| 75 | const struct nf_conntrack_l4proto *proto); | |
| 77ab9cff | 76 | |
| f8ba1aff | 77 | extern spinlock_t nf_conntrack_lock ; |
| 7e5d03bb | 78 | |
| 9fb9cbb1 | 79 | #endif /* _NF_CONNTRACK_CORE_H */ |