/* Ported to GNU C openVMS/Alpha by Klaus Kämpf, kkaempf@progis.de */ #ifndef _NETINET_IN_H #define _NETINET_IN_H 1 #include #ifdef __cplusplus extern "C" { #endif /* * Copyright (c) 1982 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. * * in.h 6.5 (Berkeley) 6/8/85 */ /* * Constants and structures defined by the internet system, * Per RFC 790, September 1981. */ /* * Protocols */ #define IPPROTO_IP 0 /* dummy for IP */ #define IPPROTO_ICMP 1 /* control message protocol */ #define IPPROTO_GGP 2 /* gateway^2 (deprecated) */ #define IPPROTO_TCP 6 /* tcp */ #define IPPROTO_EGP 8 /* exterior gateway protocol */ #define IPPROTO_PUP 12 /* pup */ #define IPPROTO_UDP 17 /* user datagram protocol */ #define IPPROTO_RAW 255 /* raw IP packet */ #define IPPROTO_MAX 256 /* * Ports < IPPORT_RESERVED are reserved for * privileged processes (e.g. root). */ #define IPPORT_RESERVED 1024 #define IPPORT_USERRESERVED 5000 /* * Link numbers */ #define IMPLINK_IP 155 #define IMPLINK_LOWEXPER 156 #define IMPLINK_HIGHEXPER 158 /* * Internet address (a structure for historical reasons) */ struct in_addr { union { struct { u_char s_b1,s_b2,s_b3,s_b4; } S_un_b; struct { u_short s_w1,s_w2; } S_un_w; u_long S_addr; } S_un; #define s_addr S_un.S_addr /* can be used for most tcp & ip code */ #define s_host S_un.S_un_b.s_b2 /* host on imp */ #define s_net S_un.S_un_b.s_b1 /* network */ #define s_imp S_un.S_un_w.s_w2 /* imp */ #define s_impno S_un.S_un_b.s_b4 /* imp # */ #define s_lh S_un.S_un_b.s_b3 /* logical host */ }; /* * Definitions of bits in internet address integers. */ #define IN_CLASSA(i) ((((long)(i))&0x80000000)==0) #define IN_CLASSA_NET 0xff000000 #define IN_CLASSA_NSHIFT 24 #define IN_CLASSA_HOST 0x00ffffff #define IN_CLASSA_MAX 128 #define IN_CLASSB(i) ((((long)(i))&0xc0000000)==0x80000000) #define IN_CLASSB_NET 0xffff0000 #define IN_CLASSB_NSHIFT 16 #define IN_CLASSB_HOST 0x0000ffff #define IN_CLASSB_MAX 65536 #define IN_CLASSC(i) ((((long)(i))&0xc0000000)==0xc0000000) #define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_HOST 0x000000ff #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) #define IN_MULTICAST(i) IN_CLASSD(i) #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) #define INADDR_ANY 0x00000000 #define INADDR_BROADCAST 0xffffffff #ifndef KERNEL #define INADDR_NONE 0xffffffff /* -1 return */ #endif #define IN_LOOPBACKNET 127 /* official! */ /* * Macros for subnetworks. A subnet is distinguished by * (1) the network number is a `local' network number, and * (2) the most significant bit of the host part is set. * Such addresses include one additional byte in the network number, * and use one less byte in the host part (i.e., a subnet of a Class A * network uses the rules for Class B net/host number extraction, * a Class B subnet is dealt with as if it were a Class C net). * Subnets of Class C nets are not supported. */ #define SUBNETSHIFT 8 /* used to get main net number from subnet */ #define IN_SUBNETA(i) ((((long)(i))&0x80800000)==0x00800000) #define IN_CLASSA_SUBNET 0xffff0000 #define IN_CLASSA_SUBNSHIFT (IN_CLASSA_NSHIFT - SUBNETSHIFT) #define IN_CLASSA_SUBHOST 0x0000ffff #define IN_SUBNETB(i) ((((long)(i))&0xc0008000)==0x80008000) #define IN_CLASSB_SUBNET 0xffffff00 #define IN_CLASSB_SUBNSHIFT (IN_CLASSB_NSHIFT - SUBNETSHIFT) #define IN_CLASSA_SUBHOST 0x0000ffff #define IN_CLASSB_SUBHOST 0x000000ff /* * Socket address, internet style. */ struct sockaddr_in { short sin_family; u_short sin_port; struct in_addr sin_addr; char sin_zero[8]; }; /* * Options for use with [gs]etsockopt at the IP level. */ #define IP_OPTIONS 1 /* set/get IP per-packet options */ unsigned long int htonl ( unsigned long int ) __asm ("DECC$HTONL"); unsigned short int htons ( unsigned short int ) __asm ("DECC$HTONS"); unsigned long int ntohl ( unsigned long int ) __asm ("DECC$NTOHL"); unsigned short int ntohs ( unsigned short int ) __asm ("DECC$NTOHS"); #ifdef __cplusplus } #endif #endif /* _NETINET_IN_H */