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Annotation of 43BSDTahoe/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.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)in.h        7.6 (Berkeley) 6/29/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * Constants and structures defined by the internet system,
        !            22:  * Per RFC 790, September 1981.
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Protocols
        !            27:  */
        !            28: #define        IPPROTO_IP              0               /* dummy for IP */
        !            29: #define        IPPROTO_ICMP            1               /* control message protocol */
        !            30: #define        IPPROTO_GGP             3               /* gateway^2 (deprecated) */
        !            31: #define        IPPROTO_TCP             6               /* tcp */
        !            32: #define        IPPROTO_EGP             8               /* exterior gateway protocol */
        !            33: #define        IPPROTO_PUP             12              /* pup */
        !            34: #define        IPPROTO_UDP             17              /* user datagram protocol */
        !            35: #define        IPPROTO_IDP             22              /* xns idp */
        !            36: 
        !            37: #define        IPPROTO_RAW             255             /* raw IP packet */
        !            38: #define        IPPROTO_MAX             256
        !            39: 
        !            40: 
        !            41: /*
        !            42:  * Ports < IPPORT_RESERVED are reserved for
        !            43:  * privileged processes (e.g. root).
        !            44:  * Ports > IPPORT_USERRESERVED are reserved
        !            45:  * for servers, not necessarily privileged.
        !            46:  */
        !            47: #define        IPPORT_RESERVED         1024
        !            48: #define        IPPORT_USERRESERVED     5000
        !            49: 
        !            50: /*
        !            51:  * Link numbers
        !            52:  */
        !            53: #define        IMPLINK_IP              155
        !            54: #define        IMPLINK_LOWEXPER        156
        !            55: #define        IMPLINK_HIGHEXPER       158
        !            56: 
        !            57: /*
        !            58:  * Internet address (a structure for historical reasons)
        !            59:  */
        !            60: struct in_addr {
        !            61:        u_long s_addr;
        !            62: };
        !            63: 
        !            64: /*
        !            65:  * Definitions of bits in internet address integers.
        !            66:  * On subnets, the decomposition of addresses to host and net parts
        !            67:  * is done according to subnet mask, not the masks here.
        !            68:  */
        !            69: #define        IN_CLASSA(i)            (((long)(i) & 0x80000000) == 0)
        !            70: #define        IN_CLASSA_NET           0xff000000
        !            71: #define        IN_CLASSA_NSHIFT        24
        !            72: #define        IN_CLASSA_HOST          0x00ffffff
        !            73: #define        IN_CLASSA_MAX           128
        !            74: 
        !            75: #define        IN_CLASSB(i)            (((long)(i) & 0xc0000000) == 0x80000000)
        !            76: #define        IN_CLASSB_NET           0xffff0000
        !            77: #define        IN_CLASSB_NSHIFT        16
        !            78: #define        IN_CLASSB_HOST          0x0000ffff
        !            79: #define        IN_CLASSB_MAX           65536
        !            80: 
        !            81: #define        IN_CLASSC(i)            (((long)(i) & 0xe0000000) == 0xc0000000)
        !            82: #define        IN_CLASSC_NET           0xffffff00
        !            83: #define        IN_CLASSC_NSHIFT        8
        !            84: #define        IN_CLASSC_HOST          0x000000ff
        !            85: 
        !            86: #define        IN_CLASSD(i)            (((long)(i) & 0xf0000000) == 0xe0000000)
        !            87: #define        IN_MULTICAST(i)         IN_CLASSD(i)
        !            88: 
        !            89: #define        IN_EXPERIMENTAL(i)      (((long)(i) & 0xe0000000) == 0xe0000000)
        !            90: #define        IN_BADCLASS(i)          (((long)(i) & 0xf0000000) == 0xf0000000)
        !            91: 
        !            92: #define        INADDR_ANY              (u_long)0x00000000
        !            93: #define        INADDR_BROADCAST        (u_long)0xffffffff      /* must be masked */
        !            94: #ifndef KERNEL
        !            95: #define        INADDR_NONE             0xffffffff              /* -1 return */
        !            96: #endif
        !            97: 
        !            98: #define        IN_LOOPBACKNET          127                     /* official! */
        !            99: 
        !           100: /*
        !           101:  * Socket address, internet style.
        !           102:  */
        !           103: struct sockaddr_in {
        !           104:        short   sin_family;
        !           105:        u_short sin_port;
        !           106:        struct  in_addr sin_addr;
        !           107:        char    sin_zero[8];
        !           108: };
        !           109: 
        !           110: /*
        !           111:  * Options for use with [gs]etsockopt at the IP level.
        !           112:  */
        !           113: #define        IP_OPTIONS      1               /* set/get IP per-packet options */
        !           114: 
        !           115: #ifdef KERNEL
        !           116: extern struct domain inetdomain;
        !           117: extern struct protosw inetsw[];
        !           118: struct in_addr in_makeaddr();
        !           119: u_long in_netof(), in_lnaof();
        !           120: #endif

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