| #ifndef _IP_NAT_HELPER_H |
| #define _IP_NAT_HELPER_H |
| /* NAT protocol helper routines. */ |
| |
| #include <linux/netfilter_ipv4/ip_conntrack.h> |
| #include <linux/module.h> |
| |
| struct sk_buff; |
| |
| /* These return true or false. */ |
| extern int ip_nat_mangle_tcp_packet(struct sk_buff **skb, |
| struct ip_conntrack *ct, |
| enum ip_conntrack_info ctinfo, |
| unsigned int match_offset, |
| unsigned int match_len, |
| const char *rep_buffer, |
| unsigned int rep_len); |
| extern int ip_nat_mangle_udp_packet(struct sk_buff **skb, |
| struct ip_conntrack *ct, |
| enum ip_conntrack_info ctinfo, |
| unsigned int match_offset, |
| unsigned int match_len, |
| const char *rep_buffer, |
| unsigned int rep_len); |
| extern int ip_nat_seq_adjust(struct sk_buff **pskb, |
| struct ip_conntrack *ct, |
| enum ip_conntrack_info ctinfo); |
| |
| /* Setup NAT on this expected conntrack so it follows master, but goes |
| * to port ct->master->saved_proto. */ |
| extern void ip_nat_follow_master(struct ip_conntrack *ct, |
| struct ip_conntrack_expect *this); |
| #endif |
