bsd/net/iso88025.h

   1 /*
   2  * Copyright (c) 1998, Larry Lile
   3  * All rights reserved.
   4  *
   5  * For latest sources and information on this driver, please
   6  * go to http://anarchy.stdio.com.
   7  *
   8  * Questions, comments or suggestions should be directed to
   9  * Larry Lile <lile@stdio.com>.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice unmodified, this list of conditions, and the following
  16  *    disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sys/net/iso88025.h,v 1.3.2.1 2000/10/14 20:01:06 lile Exp $
  34  *
  35  * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
  36  * the Mach token ring driver.
  37  */
  38
  39 /*
  40  * Fundamental constants relating to iso 802.5
  41  */
  42
  43 #ifndef _NET_ISO88025_H_
  44 #define _NET_ISO88025_H_
  45
  46 /*
  47  * General ISO 802.5 definitions
  48  */
  49 #define ISO88025_ADDR_LEN       6
  50 #define ISO88025_HDR_LEN        (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))
  51 #define ISO88025_CF_LEN         2
  52 #define RCF_LEN                 2
  53 #define RIF_MAX_RD              14
  54 #define RIF_MAX_LEN             16
  55
  56 #define TR_AC                   0x10
  57 #define TR_LLC_FRAME            0x40
  58
  59 #define TR_4MBPS                4000000
  60 #define TR_16MBPS               16000000
  61 #define TR_100MBPS              100000000
  62
  63 /*
  64  * Source routing
  65  */
  66 #define TR_RII                  0x80
  67 #define TR_RCF_BCST_MASK        0xe000
  68 #define TR_RCF_LEN_MASK         0x1f00
  69 #define TR_RCF_DIR              0x0080
  70 #define TR_RCF_LF_MASK          0x0070
  71
  72 #define TR_RCF_RIFLEN(x)        ((ntohs(x) & TR_RCF_LEN_MASK) >> 8)
  73
  74 /*
  75  * Minimum and maximum packet payload lengths.
  76  */
  77 #define ISO88025_MIN_LEN        0
  78 #define ISO88025_MAX_LEN        17960
  79
  80 /*
  81  * A macro to validate a length with
  82  */
  83 #define ISO88025_IS_VALID_LEN(foo)      \
  84         ((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
  85
  86 /*
  87  * ISO 802.5 physical header
  88  */
  89 struct iso88025_header {
  90         u_char  ac;                                 /* access control field */
  91         u_char  fc;                                 /* frame control field */
  92         u_char  iso88025_dhost[ISO88025_ADDR_LEN];  /* destination address */
  93         u_char  iso88025_shost[ISO88025_ADDR_LEN];  /* source address */
  94         u_short rcf;                                /* route control field */
  95         u_short rd[RIF_MAX_RD];                     /* routing designators */
  96 };
  97
  98 struct iso88025_sockaddr_data {
  99         u_char ether_dhost[ISO88025_ADDR_LEN];
 100         u_char ether_shost[ISO88025_ADDR_LEN];
 101         u_char ac;
 102         u_char fc;
 103 };
 104
 105 /*
 106  * Structure of a 48-bit iso 802.5 address.
 107  *  ( We could also add the 16 bit addresses as a union)
 108  */
 109 struct  iso88025_addr {
 110         u_char octet[ISO88025_ADDR_LEN];
 111 };
 112
 113 #define ISO88025_MAX_MTU        18000
 114 #define ISO88025_DEFAULT_MTU    1500
 115 #define senderr(e) { error = (e); goto bad;}
 116
 117 #endif