dist/tcpdump/fddi.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that: (1) source code distributions
   9  * retain the above copyright notice and this paragraph in its entirety, (2)
  10  * distributions including binary code include the above copyright notice and
  11  * this paragraph in its entirety in the documentation or other materials
  12  * provided with the distribution, and (3) all advertising materials mentioning
  13  * features or use of this software display the following acknowledgement:
  14  * ``This product includes software developed by the University of California,
  15  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  16  * the University nor the names of its contributors may be used to endorse
  17  * or promote products derived from this software without specific prior
  18  * written permission.
  19  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  20  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  21  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  22  *
  23  * @(#) Header: /tcpdump/master/tcpdump/fddi.h,v 1.11 2002/12/11 07:13:51 guy Exp (LBL)
  24  */
  25
  26 /*
  27  * Based on Ultrix if_fddi.h
  28  */
  29
  30 /*
  31  * This stuff should come from a system header file, but there's no
  32  * obviously portable way to do that and it's not really going
  33  * to change from system to system (except for the padding business).
  34  */
  35
  36 struct fddi_header {
  37         u_char  fddi_fc;                /* frame control */
  38         u_char  fddi_dhost[6];
  39         u_char  fddi_shost[6];
  40 };
  41
  42 /*
  43  * Length of an FDDI header; note that some compilers may pad
  44  * "struct fddi_header" to a multiple of 4 bytes, for example, so
  45  * "sizeof (struct fddi_header)" may not give the right
  46  * answer.
  47  */
  48 #define FDDI_HDRLEN 13
  49
  50 /* Useful values for fddi_fc (frame control) field */
  51
  52 /*
  53  * FDDI Frame Control bits
  54  */
  55 #define FDDIFC_C                0x80            /* Class bit */
  56 #define FDDIFC_L                0x40            /* Address length bit */
  57 #define FDDIFC_F                0x30            /* Frame format bits */
  58 #define FDDIFC_Z                0x0f            /* Control bits */
  59
  60 /*
  61  * FDDI Frame Control values. (48-bit addressing only).
  62  */
  63 #define FDDIFC_VOID             0x40            /* Void frame */
  64 #define FDDIFC_NRT              0x80            /* Nonrestricted token */
  65 #define FDDIFC_RT               0xc0            /* Restricted token */
  66 #define FDDIFC_SMT_INFO         0x41            /* SMT Info */
  67 #define FDDIFC_SMT_NSA          0x4F            /* SMT Next station adrs */
  68 #define FDDIFC_MAC_BEACON       0xc2            /* MAC Beacon frame */
  69 #define FDDIFC_MAC_CLAIM        0xc3            /* MAC Claim frame */
  70 #define FDDIFC_LLC_ASYNC        0x50            /* Async. LLC frame */
  71 #define FDDIFC_LLC_SYNC         0xd0            /* Sync. LLC frame */
  72 #define FDDIFC_IMP_ASYNC        0x60            /* Implementor Async. */
  73 #define FDDIFC_IMP_SYNC         0xe0            /* Implementor Synch. */
  74 #define FDDIFC_SMT              0x40            /* SMT frame */
  75 #define FDDIFC_MAC              0xc0            /* MAC frame */
  76
  77 #define FDDIFC_CLFF             0xF0            /* Class/Length/Format bits */
  78 #define FDDIFC_ZZZZ             0x0F            /* Control bits */