StdLib/Include/netatalk/at.h

   1 /*
   2  * Copyright (c) 1990,1991 Regents of The University of Michigan.
   3  * All Rights Reserved.
   4  *
   5  * Permission to use, copy, modify, and distribute this software and
   6  * its documentation for any purpose and without fee is hereby granted,
   7  * provided that the above copyright notice appears in all copies and
   8  * that both that copyright notice and this permission notice appear
   9  * in supporting documentation, and that the name of The University
  10  * of Michigan not be used in advertising or publicity pertaining to
  11  * distribution of the software without specific, written prior
  12  * permission. This software is supplied as is without expressed or
  13  * implied warranties of any kind.
  14  *
  15  *      Research Systems Unix Group
  16  *      The University of Michigan
  17  *      c/o Mike Clark
  18  *      535 W. William Street
  19  *      Ann Arbor, Michigan
  20  *      +1-313-763-0525
  21  *      netatalk@itd.umich.edu
  22  */
  23
  24 #ifndef __AT_HEADER__
  25 #define __AT_HEADER__
  26 /*
  27  * Supported protocols
  28  */
  29 #define ATPROTO_DDP     0
  30 #define ATPROTO_AARP    254
  31
  32 /*
  33  * Ethernet types, for DIX.
  34  * These should really be in some global header file, but we can't
  35  * count on them being there, and it's annoying to patch system files.
  36  */
  37 #define ETHERTYPE_AT    0x809B          /* AppleTalk protocol */
  38 #define ETHERTYPE_AARP  0x80F3          /* AppleTalk ARP */
  39
  40 #define DDP_MAXSZ       587
  41
  42 /*
  43  * If ATPORT_FIRST <= Port < ATPORT_RESERVED,
  44  * Port was created by a privileged process.
  45  * If ATPORT_RESERVED <= Port < ATPORT_LAST,
  46  * Port was not necessarily created by a
  47  * privileged process.
  48  */
  49 #define ATPORT_FIRST    1
  50 #define ATPORT_RESERVED 128
  51 #define ATPORT_LAST     255
  52
  53 /*
  54  * AppleTalk address.
  55  */
  56 struct at_addr {
  57     u_short     s_net;
  58     u_char      s_node;
  59 };
  60
  61 #define ATADDR_ANYNET   (u_short)0x0000
  62 #define ATADDR_ANYNODE  (u_char)0x00
  63 #define ATADDR_ANYPORT  (u_char)0x00
  64 #define ATADDR_BCAST    (u_char)0xff            /* There is no BCAST for NET */
  65
  66 struct netrange {
  67     u_char              nr_phase;
  68     u_short             nr_firstnet;
  69     u_short             nr_lastnet;
  70 };
  71
  72 /*
  73  * Socket address, AppleTalk style.  We keep magic information in the
  74  * zero bytes.  There are three types, NONE, CONFIG which has the phase
  75  * and a net range, and IFACE which has the network address of an
  76  * interface.  IFACE may be filled in by the client, and is filled in
  77  * by the kernel.
  78  */
  79 struct sockaddr_at {
  80     u_char              sat_len;
  81     u_char              sat_family;
  82     u_char              sat_port;
  83     struct at_addr      sat_addr;
  84     union {
  85         struct netrange r_netrange;
  86         char            r_zero[ 8 ];    /* Hide a struct netrange in here */
  87     } sat_range;
  88 };
  89
  90 #define sat_zero sat_range.r_zero
  91
  92 #endif /* !__AT_HEADER__ */