sys/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 1.3.2.2 2002/06/18 00:15:31 kbyanc Exp $
  34  * $DragonFly: src/sys/net/Attic/iso88025.h,v 1.6 2006/05/20 02:42:08 dillon Exp $
  35  *
  36  * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
  37  * the Mach token ring driver.
  38  */
  39
  40 /*
  41  * Fundamental constants relating to iso 802.5
  42  */
  43
  44 #ifndef _NET_ISO88025_H_
  45 #define _NET_ISO88025_H_
  46
  47 #ifndef _SYS_TYPES_H_
  48 #include <sys/types.h>
  49 #endif
  50
  51 /*
  52  * General ISO 802.5 definitions
  53  */
  54 #define ISO88025_ADDR_LEN       6
  55 #define ISO88025_HDR_LEN        (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))
  56 #define ISO88025_CF_LEN         2
  57 #define RCF_LEN                 2
  58 #define RIF_MAX_RD              14
  59 #define RIF_MAX_LEN             16
  60
  61 #define TR_AC                   0x10
  62 #define TR_LLC_FRAME            0x40
  63
  64 #define TR_4MBPS                4000000
  65 #define TR_16MBPS               16000000
  66 #define TR_100MBPS              100000000
  67
  68 /*
  69  * Source routing
  70  */
  71 #define TR_RII                  0x80
  72 #define TR_RCF_BCST_MASK        0xe000
  73 #define TR_RCF_LEN_MASK         0x1f00
  74 #define TR_RCF_DIR              0x0080
  75 #define TR_RCF_LF_MASK          0x0070
  76
  77 #define TR_RCF_RIFLEN(x)        ((ntohs(x) & TR_RCF_LEN_MASK) >> 8)
  78
  79 /*
  80  * Minimum and maximum packet payload lengths.
  81  */
  82 #define ISO88025_MIN_LEN        0
  83 #define ISO88025_MAX_LEN        17960
  84
  85 /*
  86  * A macro to validate a length with
  87  */
  88 #define ISO88025_IS_VALID_LEN(foo)      \
  89         ((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
  90
  91 /*
  92  * ISO 802.5 physical header
  93  */
  94 struct iso88025_header {
  95         u_char  ac;                                 /* access control field */
  96         u_char  fc;                                 /* frame control field */
  97         u_char  iso88025_dhost[ISO88025_ADDR_LEN];  /* destination address */
  98         u_char  iso88025_shost[ISO88025_ADDR_LEN];  /* source address */
  99         u_short rcf;                                /* route control field */
 100         u_short rd[RIF_MAX_RD];                     /* routing designators */
 101 };
 102
 103 struct iso88025_sockaddr_data {
 104         u_char ether_dhost[ISO88025_ADDR_LEN];
 105         u_char ether_shost[ISO88025_ADDR_LEN];
 106         u_char ac;
 107         u_char fc;
 108 };
 109
 110 struct iso88025_sockaddr_dl_data {
 111         u_short  trld_rcf;
 112         u_short *trld_route[RIF_MAX_LEN];
 113 };
 114
 115 #define ISO88025_MAX(a, b)      (((a)>(b))?(a):(b))
 116 #define SDL_ISO88025(s)         ((struct iso88025_sockaddr_dl_data *)   \
 117                                  ((s)->sdl_data + \
 118                                   ISO88025_MAX((s)->sdl_nlen + (s)->sdl_alen + \
 119                                                (s)->sdl_slen, 12)))
 120
 121 /*
 122  * Structure of a 48-bit iso 802.5 address.
 123  *  ( We could also add the 16 bit addresses as a union)
 124  */
 125 struct  iso88025_addr {
 126         u_char octet[ISO88025_ADDR_LEN];
 127 };
 128
 129 #define ISO88025_MAX_MTU        18000
 130 #define ISO88025_DEFAULT_MTU    1500
 131 #define senderr(e) { error = (e); goto bad;}
 132
 133 struct lwkt_serialize;
 134 struct ifnet;
 135
 136 void    iso88025_ifattach (struct ifnet *, struct lwkt_serialize *);
 137 int     iso88025_ioctl (struct ifnet *, int , caddr_t );
 138
 139 #endif