bsd/net/if_llc.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1988, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  *
  57  *      @(#)if_llc.h    8.1 (Berkeley) 6/10/93
  58  */
  59
  60 #ifndef _NET_IF_LLC_H_
  61 #define _NET_IF_LLC_H_
  62 #include <sys/appleapiopts.h>
  63
  64 /*
  65  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  66  * 802.{3,4,5} media access control methods.
  67  *
  68  * Headers here do not use bit fields due to shortcomings in many
  69  * compilers.
  70  */
  71
  72 struct llc {
  73         u_char  llc_dsap;
  74         u_char  llc_ssap;
  75         union {
  76             struct {
  77                 u_char control;
  78                 u_char format_id;
  79                 u_char class;
  80                 u_char window_x2;
  81             } type_u;
  82             struct {
  83                 u_char num_snd_x2;
  84                 u_char num_rcv_x2;
  85             } type_i;
  86             struct {
  87                 u_char control;
  88                 u_char num_rcv_x2;
  89             } type_s;
  90             struct {
  91                 u_char control;
  92                 struct frmrinfo {
  93                         u_char rej_pdu_0;
  94                         u_char rej_pdu_1;
  95                         u_char frmr_control;
  96                         u_char frmr_control_ext;
  97                         u_char frmr_cause;
  98                 } frmrinfo;
  99             } type_frmr;
 100             struct {
 101                 u_char control;
 102                 u_char org_code[3];
 103                 u_short ether_type;
 104             } type_snap;
 105             struct {
 106                 u_char control;
 107                 u_char control_ext;
 108             } type_raw;
 109         } llc_un;
 110 };
 111 #define llc_control            llc_un.type_u.control
 112 #define llc_control_ext        llc_un.type_raw.control_ext
 113 #define llc_fid                llc_un.type_u.format_id
 114 #define llc_class              llc_un.type_u.class
 115 #define llc_window             llc_un.type_u.window_x2
 116 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 117 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 118 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 119 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 120 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 121 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 122
 123 /*
 124  * Don't use sizeof(struct llc_un) for LLC header sizes
 125  */
 126 #define LLC_ISFRAMELEN 4
 127 #define LLC_UFRAMELEN  3
 128 #define LLC_FRMRLEN    7
 129
 130 /*
 131  * Unnumbered LLC format commands
 132  */
 133 #define LLC_UI          0x3
 134 #define LLC_UI_P        0x13
 135 #define LLC_DISC        0x43
 136 #define LLC_DISC_P      0x53
 137 #define LLC_UA          0x63
 138 #define LLC_UA_P        0x73
 139 #define LLC_TEST        0xe3
 140 #define LLC_TEST_P      0xf3
 141 #define LLC_FRMR        0x87
 142 #define LLC_FRMR_P      0x97
 143 #define LLC_DM          0x0f
 144 #define LLC_DM_P        0x1f
 145 #define LLC_XID         0xaf
 146 #define LLC_XID_P       0xbf
 147 #define LLC_SABME       0x6f
 148 #define LLC_SABME_P     0x7f
 149
 150 /*
 151  * Supervisory LLC commands
 152  */
 153 #define LLC_RR          0x01
 154 #define LLC_RNR         0x05
 155 #define LLC_REJ         0x09
 156
 157 /*
 158  * Info format - dummy only
 159  */
 160 #define LLC_INFO        0x00
 161
 162 /*
 163  * ISO PDTR 10178 contains among others
 164  */
 165 #define LLC_X25_LSAP    0x7e
 166 #define LLC_SNAP_LSAP   0xaa
 167 #define LLC_ISO_LSAP    0xfe
 168
 169 #endif