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- #ifndef NET_IN_H
- #define NET_IN_H \
- "$Id: in.h,v 4.2 1994/10/05 23:12:24 ppessi Exp $"
- /*
- * Generic internet definitions
- *
- * Copyright © 1994 AmiTCP/IP Group,
- * Network Solutions Development, Inc.
- * All rights reserved.
- */
-
- #define IN_H XXX - compatibility
-
- /*
- * Macros for network/external number representation conversion.
- */
- #ifndef ntohl
- #define ntohl(x) (x)
- #define ntohs(x) (x)
- #define htonl(x) (x)
- #define htons(x) (x)
-
- #define NTOHL(x) (x)
- #define NTOHS(x) (x)
- #define HTONL(x) (x)
- #define HTONS(x) (x)
- #endif
-
- /*
- * 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 3 /* 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_IDP 22 /* xns idp */
- #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
- #define IPPROTO_EON 80 /* ISO cnlp */
-
- #define IPPROTO_RAW 255 /* raw IP packet */
- #define IPPROTO_MAX 256
-
-
- /*
- * Local port number conventions:
- * Ports < IPPORT_RESERVED are reserved for
- * privileged processes (e.g. root).
- * Ports > IPPORT_USERRESERVED are reserved
- * for servers, not necessarily privileged.
- */
- #define IPPORT_RESERVED 1024
- #define IPPORT_USERRESERVED 5000
-
- /*
- * Internet address (a structure for historical reasons)
- */
- struct in_addr {
- u_long s_addr;
- };
-
- /*
- * Definitions of bits in internet address integers.
- * On subnets, the decomposition of addresses to host and net parts
- * is done according to subnet mask, not the masks here.
- */
- #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) & 0xe0000000) == 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 (u_long)0x00000000
- #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
- #if !defined(KERNEL) || defined(AMITCP)
- #define INADDR_NONE 0xffffffff /* -1 return */
- #endif
-
- #define IN_LOOPBACKNET 127 /* official! */
-
- /*
- * Socket address, internet style.
- */
- struct sockaddr_in {
- u_char sin_len;
- u_char sin_family;
- u_short sin_port;
- struct in_addr sin_addr;
- char sin_zero[8];
- };
-
- /*
- * Structure used to describe IP options.
- * Used to store options internally, to pass them to a process,
- * or to restore options retrieved earlier.
- * The ip_dst is used for the first-hop gateway when using a source route
- * (this gets put into the header proper).
- */
- struct ip_opts {
- struct in_addr ip_dst; /* first hop, 0 w/o src rt */
- char ip_opts[40]; /* actually variable in size */
- };
-
- /*
- * Options for use with [gs]etsockopt at the IP level.
- * First word of comment is data type; bool is stored in int.
- */
- #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */
- #define IP_HDRINCL 2 /* int; header is included with data (raw) */
- #define IP_TOS 3 /* int; IP type of service and precedence */
- #define IP_TTL 4 /* int; IP time to live */
- #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */
- #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */
- #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */
- #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */
-
- #endif /* !IN_H */
-