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2
3
4
5#ifndef _NF_CONNTRACK_EXPECT_H
6#define _NF_CONNTRACK_EXPECT_H
7#include <net/netfilter/nf_conntrack.h>
8
9extern unsigned int nf_ct_expect_hsize;
10extern unsigned int nf_ct_expect_max;
11
12struct nf_conntrack_expect {
13
14 struct hlist_node lnode;
15
16
17 struct hlist_node hnode;
18
19
20 struct nf_conntrack_tuple tuple;
21 struct nf_conntrack_tuple_mask mask;
22
23
24 void (*expectfn)(struct nf_conn *new,
25 struct nf_conntrack_expect *this);
26
27
28 struct nf_conntrack_helper *helper;
29
30
31 struct nf_conn *master;
32
33
34 struct timer_list timeout;
35
36
37 atomic_t use;
38
39
40 unsigned int flags;
41
42
43 unsigned int class;
44
45#ifdef CONFIG_NF_NAT_NEEDED
46 union nf_inet_addr saved_addr;
47
48
49 union nf_conntrack_man_proto saved_proto;
50
51 enum ip_conntrack_dir dir;
52#endif
53
54 struct rcu_head rcu;
55};
56
57static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp)
58{
59 return nf_ct_net(exp->master);
60}
61
62#define NF_CT_EXP_POLICY_NAME_LEN 16
63
64struct nf_conntrack_expect_policy {
65 unsigned int max_expected;
66 unsigned int timeout;
67 char name[NF_CT_EXP_POLICY_NAME_LEN];
68};
69
70#define NF_CT_EXPECT_CLASS_DEFAULT 0
71
72int nf_conntrack_expect_pernet_init(struct net *net);
73void nf_conntrack_expect_pernet_fini(struct net *net);
74
75int nf_conntrack_expect_init(void);
76void nf_conntrack_expect_fini(void);
77
78struct nf_conntrack_expect *
79__nf_ct_expect_find(struct net *net, u16 zone,
80 const struct nf_conntrack_tuple *tuple);
81
82struct nf_conntrack_expect *
83nf_ct_expect_find_get(struct net *net, u16 zone,
84 const struct nf_conntrack_tuple *tuple);
85
86struct nf_conntrack_expect *
87nf_ct_find_expectation(struct net *net, u16 zone,
88 const struct nf_conntrack_tuple *tuple);
89
90void nf_ct_unlink_expect_report(struct nf_conntrack_expect *exp,
91 u32 portid, int report);
92static inline void nf_ct_unlink_expect(struct nf_conntrack_expect *exp)
93{
94 nf_ct_unlink_expect_report(exp, 0, 0);
95}
96
97void nf_ct_remove_expectations(struct nf_conn *ct);
98void nf_ct_unexpect_related(struct nf_conntrack_expect *exp);
99
100
101
102struct nf_conntrack_expect *nf_ct_expect_alloc(struct nf_conn *me);
103void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t,
104 const union nf_inet_addr *,
105 const union nf_inet_addr *,
106 u_int8_t, const __be16 *, const __be16 *);
107void nf_ct_expect_put(struct nf_conntrack_expect *exp);
108int nf_ct_expect_related_report(struct nf_conntrack_expect *expect,
109 u32 portid, int report);
110static inline int nf_ct_expect_related(struct nf_conntrack_expect *expect)
111{
112 return nf_ct_expect_related_report(expect, 0, 0);
113}
114
115#endif
116
117