/* * (C)opyright 1995 by Darren Reed. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and due credit is given * to the original author and the contributors. * * @(#)ip_nat.h 1.5 2/4/96 * $Id: ip_nat.h,v 2.0.1.7 1997/01/30 12:39:41 darrenr Exp $ */ #ifndef __IP_NAT_H_ #define __IP_NAT_H__ #ifndef SOLARIS #define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4))) #endif #if defined(__STDC__) || defined(__GNUC__) #define SIOCADNAT _IOW('r', 80, struct ipnat) #define SIOCRMNAT _IOW('r', 81, struct ipnat) #define SIOCGNATS _IOR('r', 82, struct natstat) #define SIOCGNATL _IOWR('r', 83, struct natlookup) #define SIOCGFRST _IOR('r', 84, struct ipfrstat) #define SIOCGIPST _IOR('r', 85, struct ips_stat) #define SIOCFLNAT _IOWR('r', 86, int) #define SIOCCNATL _IOWR('r', 87, int) #else #define SIOCADNAT _IOW(r, 80, struct ipnat) #define SIOCRMNAT _IOW(r, 81, struct ipnat) #define SIOCGNATS _IOR(r, 82, struct natstat) #define SIOCGNATL _IOWR(r, 83, struct natlookup) #define SIOCGFRST _IOR(r, 84, struct ipfrstat) #define SIOCGIPST _IOR(r, 85, struct ips_stat) #define SIOCFLNAT _IOWR(r, 86, int) #define SIOCCNATL _IOWR(r, 87, int) #endif #define NAT_SIZE 367 typedef struct nat { int nat_age; u_long nat_sumd; u_long nat_ipsumd; struct in_addr nat_inip; struct in_addr nat_outip; struct in_addr nat_oip; /* other ip */ u_short nat_oport; /* other port */ u_short nat_inport; u_short nat_outport; u_short nat_use; u_char nat_state[2]; struct ipnat *nat_ptr; struct nat *nat_next; struct nat *nat_hnext[2]; struct nat **nat_hstart[2]; } nat_t; typedef struct ipnat { struct ipnat *in_next; void *in_ifp; u_int in_space; u_int in_use; struct in_addr in_nextip; u_short in_pnext; u_short in_flags; u_short in_port[2]; struct in_addr in_in[2]; struct in_addr in_out[2]; int in_redir; /* 0 if it's a mapping, 1 if it's a hard redir */ char in_ifname[IFNAMSIZ]; } ipnat_t; #define in_pmin in_port[0] /* Also holds static redir port */ #define in_pmax in_port[1] #define in_nip in_nextip.s_addr #define in_inip in_in[0].s_addr #define in_inmsk in_in[1].s_addr #define in_outip in_out[0].s_addr #define in_outmsk in_out[1].s_addr #define NAT_INBOUND 0 #define NAT_OUTBOUND 1 #define NAT_MAP 0 #define NAT_REDIRECT 1 #define IPN_CMPSIZ (sizeof(struct in_addr) * 4 + sizeof(u_short) * 3 + \ sizeof(int)) typedef struct natlookup { struct in_addr nl_inip; struct in_addr nl_outip; u_short nl_inport; u_short nl_outport; } natlookup_t; typedef struct natstat { u_long ns_mapped[2]; u_long ns_added; u_long ns_expire; u_long ns_inuse; nat_t **ns_table[2]; ipnat_t *ns_list; } natstat_t; #define IPN_ANY 0 #define IPN_TCP 1 #define IPN_UDP 2 #define IPN_TCPUDP 3 extern nat_t *nat_table[2][NAT_SIZE]; extern int nat_ioctl(); extern nat_t *nat_outlookup(), *nat_inlookup(), *nat_lookupredir(); extern int ip_natout(), ip_natin(); extern void ip_natunload(), ip_natexpire(); #endif /* __IP_NAT_H__ */