The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/iso88025.h

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    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: releng/9.0/sys/net/iso88025.h 194581 2009-06-21 10:29:31Z rdivacky $
   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_CF_LEN         2
   51 #define ISO88025_HDR_LEN        (ISO88025_CF_LEN + (ISO88025_ADDR_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_4      4464
   79 #define ISO88025_MAX_LEN_16     17960   
   80 #define ISO88025_MAX_LEN        ISO88025_MAX_LEN_16
   81 
   82 /*
   83  * A macro to validate a length with
   84  */
   85 #define ISO88025_IS_VALID_LEN(foo)      \
   86         ((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
   87 
   88 /* Access Control field */
   89 #define AC_PRI_MASK             0xe0    /* Priority bits                */
   90 #define AC_TOKEN                0x10    /* Token bit: 0=Token, 1=Frame  */
   91 #define AC_MONITOR              0x08    /* Monitor                      */
   92 #define AC_RESV_MASK            0x07    /* Reservation bits             */
   93 
   94 /* Frame Control field */
   95 #define FC_FT_MASK              0xc0    /* Frame Type                   */
   96 #define FC_FT_MAC               0x00    /* MAC frame                    */
   97 #define FC_FT_LLC               0x40    /* LLC frame                    */
   98 #define FC_ATTN_MASK            0x0f    /* Attention bits               */
   99 #define FC_ATTN_EB              0x01    /* Express buffer               */
  100 #define FC_ATTN_BE              0x02    /* Beacon                       */
  101 #define FC_ATTN_CT              0x03    /* Claim token                  */
  102 #define FC_ATTN_RP              0x04    /* Ring purge                   */
  103 #define FC_ATTN_AMP             0x05    /* Active monitor present       */
  104 #define FC_ATTN_SMP             0x06    /* Standby monitor present      */
  105 
  106 /* Token Ring destination address */
  107 #define DA_IG                   0x80    /* Individual/group address.    */
  108                                         /* 0=Individual, 1=Group        */
  109 #define DA_UL                   0x40    /* Universal/local address.     */
  110                                         /* 0=Universal, 1=Local         */
  111 /* Token Ring source address */
  112 #define SA_RII                  0x80    /* Routing information indicator */
  113 #define SA_IG                   0x40    /* Individual/group address     */
  114                                         /* 0=Group, 1=Individual        */
  115 
  116 /*
  117  * ISO 802.5 physical header
  118  */
  119 struct iso88025_header {
  120         u_int8_t        ac;                                 /* access control field */
  121         u_int8_t        fc;                                 /* frame control field */
  122         u_int8_t        iso88025_dhost[ISO88025_ADDR_LEN];  /* destination address */
  123         u_int8_t        iso88025_shost[ISO88025_ADDR_LEN];  /* source address */
  124         u_int16_t       rcf;                                /* route control field */
  125         u_int16_t       rd[RIF_MAX_RD];                     /* routing designators */
  126 } __packed;
  127 
  128 struct iso88025_rif {
  129         u_int16_t       rcf;                                /* route control field */
  130         u_int16_t       rd[RIF_MAX_RD];                     /* routing designators */
  131 } __packed;
  132 
  133 struct iso88025_sockaddr_data {
  134         u_char ether_dhost[ISO88025_ADDR_LEN];
  135         u_char ether_shost[ISO88025_ADDR_LEN];
  136         u_char ac;
  137         u_char fc;
  138 };
  139 
  140 struct iso88025_sockaddr_dl_data {
  141         u_short  trld_rcf;
  142         u_short *trld_route[RIF_MAX_LEN];
  143 };
  144 
  145 #define ISO88025_MAX(a, b)      (((a)>(b))?(a):(b))
  146 #define SDL_ISO88025(s)         ((struct iso88025_sockaddr_dl_data *)   \
  147                                  ((s)->sdl_data + \
  148                                   ISO88025_MAX((s)->sdl_nlen + (s)->sdl_alen + \
  149                                                (s)->sdl_slen, 12)))
  150 
  151 /*
  152  * Structure of a 48-bit iso 802.5 address.
  153  *  ( We could also add the 16 bit addresses as a union)
  154  */
  155 struct  iso88025_addr {
  156         u_char octet[ISO88025_ADDR_LEN];
  157 };
  158 
  159 #define ISO88025_MAX_MTU                18000
  160 #define ISO88025_DEFAULT_MTU            1500
  161 
  162 #define ISO88025_BPF_UNSUPPORTED        0
  163 #define ISO88025_BPF_SUPPORTED          1
  164 
  165 void    iso88025_ifattach       (struct ifnet *, const u_int8_t *, int);
  166 void    iso88025_ifdetach       (struct ifnet *, int);
  167 int     iso88025_ioctl          (struct ifnet *, u_long, caddr_t );
  168 int     iso88025_output         (struct ifnet *, struct mbuf *, struct sockaddr *,
  169                                  struct route *);
  170 void    iso88025_input          (struct ifnet *, struct mbuf *);
  171 
  172 #endif

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