projects / deliverable / linux.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. */ | |
| 23 | extern unsigned int nf_conntrack_in(int pf, | |
| 24 | unsigned int hooknum, | |
| 25 | struct sk_buff **pskb); | |
| 26 | ||
| 27 | extern int nf_conntrack_init(void); | |
| 28 | extern void nf_conntrack_cleanup(void); | |
| 29 | ||
| ac5357eb PM |
30 | extern int nf_conntrack_proto_init(void); |
| 31 | extern void nf_conntrack_proto_fini(void); | |
| 32 | ||
| ceceae1b YK |
33 | extern int nf_conntrack_helper_init(void); |
| 34 | extern void nf_conntrack_helper_fini(void); | |
| 35 | ||
| 9fb9cbb1 YK |
36 | struct nf_conntrack_l3proto; |
| 37 | extern struct nf_conntrack_l3proto *nf_ct_find_l3proto(u_int16_t pf); | |
| 38 | /* Like above, but you already have conntrack read lock. */ | |
| 39 | extern struct nf_conntrack_l3proto *__nf_ct_find_l3proto(u_int16_t l3proto); | |
| 40 | ||
| 605dcad6 | 41 | struct nf_conntrack_l4proto; |
| 9fb9cbb1 YK |
42 | |
| 43 | extern int | |
| 44 | nf_ct_get_tuple(const struct sk_buff *skb, | |
| 45 | unsigned int nhoff, | |
| 46 | unsigned int dataoff, | |
| 47 | u_int16_t l3num, | |
| 48 | u_int8_t protonum, | |
| 49 | struct nf_conntrack_tuple *tuple, | |
| 50 | const struct nf_conntrack_l3proto *l3proto, | |
| 605dcad6 | 51 | const struct nf_conntrack_l4proto *l4proto); |
| 9fb9cbb1 YK |
52 | |
| 53 | extern int | |
| 54 | nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse, | |
| 55 | const struct nf_conntrack_tuple *orig, | |
| 56 | const struct nf_conntrack_l3proto *l3proto, | |
| 605dcad6 | 57 | const struct nf_conntrack_l4proto *l4proto); |
| 9fb9cbb1 YK |
58 | |
| 59 | /* Find a connection corresponding to a tuple. */ | |
| 60 | extern struct nf_conntrack_tuple_hash * | |
| 330f7db5 | 61 | nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple); |
| 9fb9cbb1 YK |
62 | |
| 63 | extern int __nf_conntrack_confirm(struct sk_buff **pskb); | |
| 64 | ||
| 65 | /* Confirm a connection: returns NF_DROP if packet must be dropped. */ | |
| 66 | static inline int nf_conntrack_confirm(struct sk_buff **pskb) | |
| 67 | { | |
| 68 | struct nf_conn *ct = (struct nf_conn *)(*pskb)->nfct; | |
| 69 | int ret = NF_ACCEPT; | |
| 70 | ||
| 71 | if (ct) { | |
| ec68e97d | 72 | if (!nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct)) |
| 9fb9cbb1 YK |
73 | ret = __nf_conntrack_confirm(pskb); |
| 74 | nf_ct_deliver_cached_events(ct); | |
| 75 | } | |
| 76 | return ret; | |
| 77 | } | |
| 78 | ||
| 79 | extern void __nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb); | |
| 80 | ||
| 77ab9cff MJ |
81 | int |
| 82 | print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, | |
| 83 | struct nf_conntrack_l3proto *l3proto, | |
| 605dcad6 | 84 | struct nf_conntrack_l4proto *proto); |
| 77ab9cff | 85 | |
| f205c5e0 | 86 | extern struct hlist_head *nf_conntrack_hash; |
| 9fb9cbb1 | 87 | extern rwlock_t nf_conntrack_lock ; |
| f205c5e0 | 88 | extern struct hlist_head unconfirmed; |
| 7e5d03bb | 89 | |
| 9fb9cbb1 | 90 | #endif /* _NF_CONNTRACK_CORE_H */ |