1
2#ifndef _NF_NAT_L3PROTO_H
3#define _NF_NAT_L3PROTO_H
4
5struct nf_nat_l4proto;
6struct nf_nat_l3proto {
7 u8 l3proto;
8
9 bool (*in_range)(const struct nf_conntrack_tuple *t,
10 const struct nf_nat_range *range);
11
12 u32 (*secure_port)(const struct nf_conntrack_tuple *t, __be16);
13
14 bool (*manip_pkt)(struct sk_buff *skb,
15 unsigned int iphdroff,
16 const struct nf_nat_l4proto *l4proto,
17 const struct nf_conntrack_tuple *target,
18 enum nf_nat_manip_type maniptype);
19
20 void (*csum_update)(struct sk_buff *skb, unsigned int iphdroff,
21 __sum16 *check,
22 const struct nf_conntrack_tuple *t,
23 enum nf_nat_manip_type maniptype);
24
25 void (*csum_recalc)(struct sk_buff *skb, u8 proto,
26 void *data, __sum16 *check,
27 int datalen, int oldlen);
28
29 void (*decode_session)(struct sk_buff *skb,
30 const struct nf_conn *ct,
31 enum ip_conntrack_dir dir,
32 unsigned long statusbit,
33 struct flowi *fl);
34
35 int (*nlattr_to_range)(struct nlattr *tb[],
36 struct nf_nat_range *range);
37};
38
39int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
40void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
41const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);
42
43int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
44 enum ip_conntrack_info ctinfo,
45 unsigned int hooknum);
46
47unsigned int nf_nat_ipv4_in(void *priv, struct sk_buff *skb,
48 const struct nf_hook_state *state,
49 unsigned int (*do_chain)(void *priv,
50 struct sk_buff *skb,
51 const struct nf_hook_state *state,
52 struct nf_conn *ct));
53
54unsigned int nf_nat_ipv4_out(void *priv, struct sk_buff *skb,
55 const struct nf_hook_state *state,
56 unsigned int (*do_chain)(void *priv,
57 struct sk_buff *skb,
58 const struct nf_hook_state *state,
59 struct nf_conn *ct));
60
61unsigned int nf_nat_ipv4_local_fn(void *priv,
62 struct sk_buff *skb,
63 const struct nf_hook_state *state,
64 unsigned int (*do_chain)(void *priv,
65 struct sk_buff *skb,
66 const struct nf_hook_state *state,
67 struct nf_conn *ct));
68
69unsigned int nf_nat_ipv4_fn(void *priv, struct sk_buff *skb,
70 const struct nf_hook_state *state,
71 unsigned int (*do_chain)(void *priv,
72 struct sk_buff *skb,
73 const struct nf_hook_state *state,
74 struct nf_conn *ct));
75
76int nf_nat_icmpv6_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
77 enum ip_conntrack_info ctinfo,
78 unsigned int hooknum, unsigned int hdrlen);
79
80unsigned int nf_nat_ipv6_in(void *priv, struct sk_buff *skb,
81 const struct nf_hook_state *state,
82 unsigned int (*do_chain)(void *priv,
83 struct sk_buff *skb,
84 const struct nf_hook_state *state,
85 struct nf_conn *ct));
86
87unsigned int nf_nat_ipv6_out(void *priv, struct sk_buff *skb,
88 const struct nf_hook_state *state,
89 unsigned int (*do_chain)(void *priv,
90 struct sk_buff *skb,
91 const struct nf_hook_state *state,
92 struct nf_conn *ct));
93
94unsigned int nf_nat_ipv6_local_fn(void *priv,
95 struct sk_buff *skb,
96 const struct nf_hook_state *state,
97 unsigned int (*do_chain)(void *priv,
98 struct sk_buff *skb,
99 const struct nf_hook_state *state,
100 struct nf_conn *ct));
101
102unsigned int nf_nat_ipv6_fn(void *priv, struct sk_buff *skb,
103 const struct nf_hook_state *state,
104 unsigned int (*do_chain)(void *priv,
105 struct sk_buff *skb,
106 const struct nf_hook_state *state,
107 struct nf_conn *ct));
108
109#endif
110
