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Annotation of 43BSD/sys/netinet/in.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)in.h        7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Constants and structures defined by the internet system,
        !            11:  * Per RFC 790, September 1981.
        !            12:  */
        !            13: 
        !            14: /*
        !            15:  * Protocols
        !            16:  */
        !            17: #define        IPPROTO_IP              0               /* dummy for IP */
        !            18: #define        IPPROTO_ICMP            1               /* control message protocol */
        !            19: #define        IPPROTO_GGP             2               /* gateway^2 (deprecated) */
        !            20: #define        IPPROTO_TCP             6               /* tcp */
        !            21: #define        IPPROTO_EGP             8               /* exterior gateway protocol */
        !            22: #define        IPPROTO_PUP             12              /* pup */
        !            23: #define        IPPROTO_UDP             17              /* user datagram protocol */
        !            24: #define        IPPROTO_IDP             22              /* xns idp */
        !            25: 
        !            26: #define        IPPROTO_RAW             255             /* raw IP packet */
        !            27: #define        IPPROTO_MAX             256
        !            28: 
        !            29: 
        !            30: /*
        !            31:  * Ports < IPPORT_RESERVED are reserved for
        !            32:  * privileged processes (e.g. root).
        !            33:  * Ports > IPPORT_USERRESERVED are reserved
        !            34:  * for servers, not necessarily privileged.
        !            35:  */
        !            36: #define        IPPORT_RESERVED         1024
        !            37: #define        IPPORT_USERRESERVED     5000
        !            38: 
        !            39: /*
        !            40:  * Link numbers
        !            41:  */
        !            42: #define        IMPLINK_IP              155
        !            43: #define        IMPLINK_LOWEXPER        156
        !            44: #define        IMPLINK_HIGHEXPER       158
        !            45: 
        !            46: /*
        !            47:  * Internet address (a structure for historical reasons)
        !            48:  */
        !            49: struct in_addr {
        !            50:        u_long s_addr;
        !            51: };
        !            52: 
        !            53: /*
        !            54:  * Definitions of bits in internet address integers.
        !            55:  * On subnets, the decomposition of addresses to host and net parts
        !            56:  * is done according to subnet mask, not the masks here.
        !            57:  */
        !            58: #define        IN_CLASSA(i)            (((long)(i) & 0x80000000) == 0)
        !            59: #define        IN_CLASSA_NET           0xff000000
        !            60: #define        IN_CLASSA_NSHIFT        24
        !            61: #define        IN_CLASSA_HOST          0x00ffffff
        !            62: #define        IN_CLASSA_MAX           128
        !            63: 
        !            64: #define        IN_CLASSB(i)            (((long)(i) & 0xc0000000) == 0x80000000)
        !            65: #define        IN_CLASSB_NET           0xffff0000
        !            66: #define        IN_CLASSB_NSHIFT        16
        !            67: #define        IN_CLASSB_HOST          0x0000ffff
        !            68: #define        IN_CLASSB_MAX           65536
        !            69: 
        !            70: #define        IN_CLASSC(i)            (((long)(i) & 0xc0000000) == 0xc0000000)
        !            71: #define        IN_CLASSC_NET           0xffffff00
        !            72: #define        IN_CLASSC_NSHIFT        8
        !            73: #define        IN_CLASSC_HOST          0x000000ff
        !            74: 
        !            75: #define        INADDR_ANY              (u_long)0x00000000
        !            76: #define        INADDR_BROADCAST        (u_long)0xffffffff      /* must be masked */
        !            77: 
        !            78: /*
        !            79:  * Socket address, internet style.
        !            80:  */
        !            81: struct sockaddr_in {
        !            82:        short   sin_family;
        !            83:        u_short sin_port;
        !            84:        struct  in_addr sin_addr;
        !            85:        char    sin_zero[8];
        !            86: };
        !            87: 
        !            88: /*
        !            89:  * Options for use with [gs]etsockopt at the IP level.
        !            90:  */
        !            91: #define        IP_OPTIONS      1               /* set/get IP per-packet options */
        !            92: 
        !            93: #if !defined(vax) && !defined(ntohl) && !defined(lint)
        !            94: /*
        !            95:  * Macros for number representation conversion.
        !            96:  */
        !            97: #define        ntohl(x)        (x)
        !            98: #define        ntohs(x)        (x)
        !            99: #define        htonl(x)        (x)
        !           100: #define        htons(x)        (x)
        !           101: #endif
        !           102: 
        !           103: #if !defined(ntohl) && (defined(vax) || defined(lint))
        !           104: u_short        ntohs(), htons();
        !           105: u_long ntohl(), htonl();
        !           106: #endif
        !           107: 
        !           108: #ifdef KERNEL
        !           109: extern struct domain inetdomain;
        !           110: extern struct protosw inetsw[];
        !           111: struct in_addr in_makeaddr();
        !           112: u_long in_netof(), in_lnaof();
        !           113: #endif

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