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5b1158e9 JK |
1 | #ifndef _NF_NAT_HELPER_H |
2 | #define _NF_NAT_HELPER_H | |
3 | /* NAT protocol helper routines. */ | |
4 | ||
5 | #include <net/netfilter/nf_conntrack.h> | |
6 | ||
7 | struct sk_buff; | |
8 | ||
9 | /* These return true or false. */ | |
4e77be46 JP |
10 | int __nf_nat_mangle_tcp_packet(struct sk_buff *skb, struct nf_conn *ct, |
11 | enum ip_conntrack_info ctinfo, | |
12 | unsigned int protoff, unsigned int match_offset, | |
13 | unsigned int match_len, const char *rep_buffer, | |
14 | unsigned int rep_len, bool adjust); | |
010c0b9f PM |
15 | |
16 | static inline int nf_nat_mangle_tcp_packet(struct sk_buff *skb, | |
17 | struct nf_conn *ct, | |
18 | enum ip_conntrack_info ctinfo, | |
051966c0 | 19 | unsigned int protoff, |
010c0b9f PM |
20 | unsigned int match_offset, |
21 | unsigned int match_len, | |
22 | const char *rep_buffer, | |
23 | unsigned int rep_len) | |
24 | { | |
051966c0 | 25 | return __nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, |
010c0b9f PM |
26 | match_offset, match_len, |
27 | rep_buffer, rep_len, true); | |
28 | } | |
29 | ||
4e77be46 JP |
30 | int nf_nat_mangle_udp_packet(struct sk_buff *skb, struct nf_conn *ct, |
31 | enum ip_conntrack_info ctinfo, | |
32 | unsigned int protoff, unsigned int match_offset, | |
33 | unsigned int match_len, const char *rep_buffer, | |
34 | unsigned int rep_len); | |
010c0b9f | 35 | |
5b1158e9 JK |
36 | /* Setup NAT on this expected conntrack so it follows master, but goes |
37 | * to port ct->master->saved_proto. */ | |
4e77be46 | 38 | void nf_nat_follow_master(struct nf_conn *ct, struct nf_conntrack_expect *this); |
f9dd09c7 | 39 | |
5b1158e9 | 40 | #endif |