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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. */ | |
3db05fea | 10 | extern int nf_nat_mangle_tcp_packet(struct sk_buff *skb, |
5b1158e9 JK |
11 | struct nf_conn *ct, |
12 | enum ip_conntrack_info ctinfo, | |
13 | unsigned int match_offset, | |
14 | unsigned int match_len, | |
15 | const char *rep_buffer, | |
16 | unsigned int rep_len); | |
3db05fea | 17 | extern int nf_nat_mangle_udp_packet(struct sk_buff *skb, |
5b1158e9 JK |
18 | struct nf_conn *ct, |
19 | enum ip_conntrack_info ctinfo, | |
20 | unsigned int match_offset, | |
21 | unsigned int match_len, | |
22 | const char *rep_buffer, | |
23 | unsigned int rep_len); | |
3db05fea | 24 | extern int nf_nat_seq_adjust(struct sk_buff *skb, |
5b1158e9 JK |
25 | struct nf_conn *ct, |
26 | enum ip_conntrack_info ctinfo); | |
27 | ||
28 | /* Setup NAT on this expected conntrack so it follows master, but goes | |
29 | * to port ct->master->saved_proto. */ | |
30 | extern void nf_nat_follow_master(struct nf_conn *ct, | |
31 | struct nf_conntrack_expect *this); | |
32 | #endif |