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Annotation of 43BSDTahoe/sys/netinet/in.h, revision 1.1.1.1

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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