bsd/net/if_llc.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1988, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)if_llc.h    8.1 (Berkeley) 6/10/93
  56  */
  57
  58 #ifndef _NET_IF_LLC_H_
  59 #define _NET_IF_LLC_H_
  60 #include <sys/appleapiopts.h>
  61
  62 /*
  63  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  64  * 802.{3,4,5} media access control methods.
  65  *
  66  * Headers here do not use bit fields due to shortcomings in many
  67  * compilers.
  68  */
  69
  70 struct llc {
  71         u_char  llc_dsap;
  72         u_char  llc_ssap;
  73         union {
  74             struct {
  75                 u_char control;
  76                 u_char format_id;
  77                 u_char class_id;
  78                 u_char window_x2;
  79             } type_u;
  80             struct {
  81                 u_char num_snd_x2;
  82                 u_char num_rcv_x2;
  83             } type_i;
  84             struct {
  85                 u_char control;
  86                 u_char num_rcv_x2;
  87             } type_s;
  88             struct {
  89                 u_char control;
  90                 struct frmrinfo {
  91                         u_char rej_pdu_0;
  92                         u_char rej_pdu_1;
  93                         u_char frmr_control;
  94                         u_char frmr_control_ext;
  95                         u_char frmr_cause;
  96                 } frmrinfo;
  97             } type_frmr;
  98             struct {
  99                 u_char control;
 100                 u_char org_code[3];
 101                 u_short ether_type;
 102             } type_snap;
 103             struct {
 104                 u_char control;
 105                 u_char control_ext;
 106             } type_raw;
 107         } llc_un;
 108 };
 109 #define llc_control            llc_un.type_u.control
 110 #define llc_control_ext        llc_un.type_raw.control_ext
 111 #define llc_fid                llc_un.type_u.format_id
 112 #define llc_class              llc_un.type_u.class_id
 113 #define llc_window             llc_un.type_u.window_x2
 114 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 115 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 116 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 117 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 118 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 119 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 120
 121 /*
 122  * Don't use sizeof(struct llc_un) for LLC header sizes
 123  */
 124 #define LLC_ISFRAMELEN 4
 125 #define LLC_UFRAMELEN  3
 126 #define LLC_FRMRLEN    7
 127
 128 /*
 129  * Unnumbered LLC format commands
 130  */
 131 #define LLC_UI          0x3
 132 #define LLC_UI_P        0x13
 133 #define LLC_DISC        0x43
 134 #define LLC_DISC_P      0x53
 135 #define LLC_UA          0x63
 136 #define LLC_UA_P        0x73
 137 #define LLC_TEST        0xe3
 138 #define LLC_TEST_P      0xf3
 139 #define LLC_FRMR        0x87
 140 #define LLC_FRMR_P      0x97
 141 #define LLC_DM          0x0f
 142 #define LLC_DM_P        0x1f
 143 #define LLC_XID         0xaf
 144 #define LLC_XID_P       0xbf
 145 #define LLC_SABME       0x6f
 146 #define LLC_SABME_P     0x7f
 147
 148 /*
 149  * Supervisory LLC commands
 150  */
 151 #define LLC_RR          0x01
 152 #define LLC_RNR         0x05
 153 #define LLC_REJ         0x09
 154
 155 /*
 156  * Info format - dummy only
 157  */
 158 #define LLC_INFO        0x00
 159
 160 /*
 161  * ISO PDTR 10178 contains among others
 162  */
 163 #define LLC_X25_LSAP    0x7e
 164 #define LLC_SNAP_LSAP   0xaa
 165 #define LLC_ISO_LSAP    0xfe
 166
 167 #endif