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. */ | |
| 4e77be46 JP |
23 | unsigned int nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum, |
| 24 | struct sk_buff *skb); | |
| 25 | ||
| 26 | int nf_conntrack_init_net(struct net *net); | |
| 27 | void nf_conntrack_cleanup_net(struct net *net); | |
| 28 | void nf_conntrack_cleanup_net_list(struct list_head *net_exit_list); | |
| 29 | ||
| 30 | int nf_conntrack_proto_pernet_init(struct net *net); | |
| 31 | void nf_conntrack_proto_pernet_fini(struct net *net); | |
| 32 | ||
| 33 | int nf_conntrack_proto_init(void); | |
| 34 | void nf_conntrack_proto_fini(void); | |
| 35 | ||
| 36 | int nf_conntrack_init_start(void); | |
| 37 | void nf_conntrack_cleanup_start(void); | |
| 38 | ||
| 39 | void nf_conntrack_init_end(void); | |
| 40 | void nf_conntrack_cleanup_end(void); | |
| 41 | ||
| 42 | bool nf_ct_get_tuple(const struct sk_buff *skb, unsigned int nhoff, | |
| 43 | unsigned int dataoff, u_int16_t l3num, u_int8_t protonum, | |
| 44 | struct nf_conntrack_tuple *tuple, | |
| 45 | const struct nf_conntrack_l3proto *l3proto, | |
| 46 | const struct nf_conntrack_l4proto *l4proto); | |
| 47 | ||
| 48 | bool nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse, | |
| 49 | const struct nf_conntrack_tuple *orig, | |
| 50 | const struct nf_conntrack_l3proto *l3proto, | |
| 51 | const struct nf_conntrack_l4proto *l4proto); | |
| 9fb9cbb1 YK |
52 | |
| 53 | /* Find a connection corresponding to a tuple. */ | |
| 4e77be46 | 54 | struct nf_conntrack_tuple_hash * |
| 308ac914 DB |
55 | nf_conntrack_find_get(struct net *net, |
| 56 | const struct nf_conntrack_zone *zone, | |
| 5d0aa2cc | 57 | const struct nf_conntrack_tuple *tuple); |
| 9fb9cbb1 | 58 | |
| 4e77be46 | 59 | int __nf_conntrack_confirm(struct sk_buff *skb); |
| 9fb9cbb1 YK |
60 | |
| 61 | /* Confirm a connection: returns NF_DROP if packet must be dropped. */ | |
| 3db05fea | 62 | static inline int nf_conntrack_confirm(struct sk_buff *skb) |
| 9fb9cbb1 | 63 | { |
| 3db05fea | 64 | struct nf_conn *ct = (struct nf_conn *)skb->nfct; |
| 9fb9cbb1 YK |
65 | int ret = NF_ACCEPT; |
| 66 | ||
| 5bfddbd4 | 67 | if (ct && !nf_ct_is_untracked(ct)) { |
| fc350777 | 68 | if (!nf_ct_is_confirmed(ct)) |
| 3db05fea | 69 | ret = __nf_conntrack_confirm(skb); |
| b1e93a68 PNA |
70 | if (likely(ret == NF_ACCEPT)) |
| 71 | nf_ct_deliver_cached_events(ct); | |
| 9fb9cbb1 YK |
72 | } |
| 73 | return ret; | |
| 74 | } | |
| 75 | ||
| 824f1fbe | 76 | void |
| 77ab9cff | 77 | print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, |
| 32948588 JE |
78 | const struct nf_conntrack_l3proto *l3proto, |
| 79 | const struct nf_conntrack_l4proto *proto); | |
| 77ab9cff | 80 | |
| 93bb0ceb JDB |
81 | #ifdef CONFIG_LOCKDEP |
| 82 | # define CONNTRACK_LOCKS 8 | |
| 83 | #else | |
| 84 | # define CONNTRACK_LOCKS 1024 | |
| 85 | #endif | |
| 86 | extern spinlock_t nf_conntrack_locks[CONNTRACK_LOCKS]; | |
| 7e5d03bb | 87 | |
| ca7433df JDB |
88 | extern spinlock_t nf_conntrack_expect_lock; |
| 89 | ||
| 9fb9cbb1 | 90 | #endif /* _NF_CONNTRACK_CORE_H */ |