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Annotation of 43BSD/contrib/nntp/rrn/in.h, revision 1.1.1.1

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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