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Annotation of 43BSD/contrib/nntp/rrn/in.h, revision 1.1

1.1     ! root        1: /*     in.h    6.4     85/03/18        */
        !             2: 
        !             3: /*
        !             4:  * Constants and structures defined by the internet system,
        !             5:  * Per RFC 790, September 1981.
        !             6:  */
        !             7: 
        !             8: /*
        !             9:  * Protocols
        !            10:  */
        !            11: #define        IPPROTO_ICMP            1               /* control message protocol */
        !            12: #define        IPPROTO_GGP             2               /* gateway^2 (deprecated) */
        !            13: #define        IPPROTO_TCP             6               /* tcp */
        !            14: #define        IPPROTO_EGP             8               /* exterior gateway protocol */
        !            15: #define        IPPROTO_PUP             12              /* pup */
        !            16: #define        IPPROTO_UDP             17              /* user datagram protocol */
        !            17: 
        !            18: #define        IPPROTO_RAW             255             /* raw IP packet */
        !            19: #define        IPPROTO_MAX             256
        !            20: 
        !            21: 
        !            22: /*
        !            23:  * Ports < IPPORT_RESERVED are reserved for
        !            24:  * privileged processes (e.g. root).
        !            25:  */
        !            26: #define        IPPORT_RESERVED         1024
        !            27: 
        !            28: /*
        !            29:  * Link numbers
        !            30:  */
        !            31: #define        IMPLINK_IP              155
        !            32: #define        IMPLINK_LOWEXPER        156
        !            33: #define        IMPLINK_HIGHEXPER       158
        !            34: 
        !            35: /*
        !            36:  * Internet address (a structure for historical reasons)
        !            37:  */
        !            38: struct in_addr {
        !            39:        u_long s_addr;
        !            40: };
        !            41: 
        !            42: /*
        !            43:  * Definitions of bits in internet address integers.
        !            44:  */
        !            45: #define        IN_CLASSA(i)            ((((long)(i))&0x80000000)==0)
        !            46: #define        IN_CLASSA_NET           0xff000000
        !            47: #define        IN_CLASSA_NSHIFT        24
        !            48: #define        IN_CLASSA_HOST          0x00ffffff
        !            49: #define        IN_CLASSA_MAX           128
        !            50: 
        !            51: #define        IN_CLASSB(i)            ((((long)(i))&0xc0000000)==0x80000000)
        !            52: #define        IN_CLASSB_NET           0xffff0000
        !            53: #define        IN_CLASSB_NSHIFT        16
        !            54: #define        IN_CLASSB_HOST          0x0000ffff
        !            55: #define        IN_CLASSB_MAX           65536
        !            56: 
        !            57: #define        IN_CLASSC(i)            ((((long)(i))&0xc0000000)==0xc0000000)
        !            58: #define        IN_CLASSC_NET           0xffffff00
        !            59: #define        IN_CLASSC_NSHIFT        8
        !            60: #define        IN_CLASSC_HOST          0x000000ff
        !            61: 
        !            62: #define        INADDR_ANY              0x00000000
        !            63: #define        INADDR_BROADCAST        0xffffffff
        !            64: 
        !            65: /*
        !            66:  * Macros for subnetworks.  A subnet is distinguished by
        !            67:  *     (1) the network number is a `local' network number, and
        !            68:  *     (2) the most significant bit of the host part is set.
        !            69:  * Such addresses include one additional byte in the network number,
        !            70:  * and use one less byte in the host part (i.e., a subnet of a Class A
        !            71:  * network uses the rules for Class B net/host number extraction,
        !            72:  * a Class B subnet is dealt with as if it were a Class C net).
        !            73:  * Subnets of Class C nets are not supported.
        !            74:  */
        !            75: #define        SUBNETSHIFT             8  /* used to get main net number from subnet */
        !            76: 
        !            77: #define        IN_SUBNETA(i)           ((((long)(i))&0x80800000)==0x00800000)
        !            78: #define        IN_CLASSA_SUBNET        0xffff0000
        !            79: #define        IN_CLASSA_SUBNSHIFT     (IN_CLASSA_NSHIFT - SUBNETSHIFT)
        !            80: #define        IN_CLASSA_SUBHOST       0x0000ffff
        !            81: 
        !            82: #define        IN_SUBNETB(i)           ((((long)(i))&0xc0008000)==0x80008000)
        !            83: #define        IN_CLASSB_SUBNET        0xffffff00
        !            84: #define        IN_CLASSB_SUBNSHIFT     (IN_CLASSB_NSHIFT - SUBNETSHIFT)
        !            85: #define        IN_CLASSA_SUBHOST       0x0000ffff
        !            86: #define        IN_CLASSB_SUBHOST       0x000000ff
        !            87: 
        !            88: /*
        !            89:  * Socket address, internet style.
        !            90:  */
        !            91: struct sockaddr_in {
        !            92:        short   sin_family;
        !            93:        u_short sin_port;
        !            94:        struct  in_addr sin_addr;
        !            95:        char    sin_zero[8];
        !            96: };
        !            97: 
        !            98: #if !defined(vax)
        !            99: /*
        !           100:  * Macros for number representation conversion.
        !           101:  */
        !           102: #define        ntohl(x)        (x)
        !           103: #define        ntohs(x)        (x)
        !           104: #define        htonl(x)        (x)
        !           105: #define        htons(x)        (x)
        !           106: #endif
        !           107: 
        !           108: #ifdef KERNEL
        !           109: extern struct domain inetdomain;
        !           110: extern struct protosw inetsw[];
        !           111: struct in_addr in_makeaddr();
        !           112: #endif

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