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- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)in.h 7.1 (Berkeley) 6/5/86
- */
-
- /*
- * 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_IDP 22 /* xns idp */
-
- #define IPPROTO_RAW 255 /* raw IP packet */
- #define IPPROTO_MAX 256
-
-
- /*
- * 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
-
- /*
- * 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 { unsigned char s_b1,s_b2,s_b3,s_b4;} S_un_b;
- struct { unsigned short s_w1,s_w2;} S_un_w;
- unsigned long S_addr;
- } S_un;
- #define s_addr S_un.S_addr
- #define s_host S_un.S_un_b.s_b2
- #define s_net S_un.S_un_b.s_b1
- #define s_imp S_un.S_un_w.s_w2
- #define s_impno S_un.S_un_b.s_b4
- #define s_lh S_un.S_un_b.s_b3
- };
-
- /*
- * 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) & 0xc0000000) == 0xc0000000)
- #define IN_CLASSC_NET 0xffffff00
- #define IN_CLASSC_NSHIFT 8
- #define IN_CLASSC_HOST 0x000000ff
-
- #define INADDR_ANY (u_long)0x00000000
- #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
-
- /*
- * 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 */
-
- #define ntohl(x) (( (((unsigned long) x) >> 24)& 0x000000ff ) |\
- ( (((unsigned long) x) >> 8) & 0x0000ff00 ) |\
- ( (((unsigned long) x) << 8) & 0x00ff0000 ) |\
- ( (((unsigned long) x) << 24)& 0xff000000 ))
- #define ntohs(x) (( (((unsigned short) x) >> 8) |\
- ( (((unsigned short) x) << 8)) & 0xffff ))
- #define htonl(x) (( (((unsigned long) x) >> 24)& 0x000000ff ) |\
- ( (((unsigned long) x) >> 8) & 0x0000ff00 ) |\
- ( (((unsigned long) x) << 8) & 0x00ff0000 ) |\
- ( (((unsigned long) x) << 24)& 0xff000000 ))
- #define htons(x) (( (((unsigned short) x) >> 8) |\
- ( (((unsigned short) x) << 8)) & 0xffff ))
-
- #ifdef KERNEL
- extern struct domain inetdomain;
- extern struct protosw inetsw[];
- struct in_addr in_makeaddr();
- u_long in_netof(), in_lnaof();
- #endif
-