bsd/net/if_llc.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1988, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)if_llc.h    8.1 (Berkeley) 6/10/93
  55  */
  56
  57 #ifndef _NET_IF_LLC_H_
  58 #define _NET_IF_LLC_H_
  59
  60 /*
  61  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  62  * 802.{3,4,5} media access control methods.
  63  *
  64  * Headers here do not use bit fields due to shortcomings in many
  65  * compilers.
  66  */
  67
  68 struct llc {
  69         u_char  llc_dsap;
  70         u_char  llc_ssap;
  71         union {
  72             struct {
  73                 u_char control;
  74                 u_char format_id;
  75                 u_char class;
  76                 u_char window_x2;
  77             } type_u;
  78             struct {
  79                 u_char num_snd_x2;
  80                 u_char num_rcv_x2;
  81             } type_i;
  82             struct {
  83                 u_char control;
  84                 u_char num_rcv_x2;
  85             } type_s;
  86             struct {
  87                 u_char control;
  88                 struct frmrinfo {
  89                         u_char rej_pdu_0;
  90                         u_char rej_pdu_1;
  91                         u_char frmr_control;
  92                         u_char frmr_control_ext;
  93                         u_char frmr_cause;
  94                 } frmrinfo;
  95             } type_frmr;
  96             struct {
  97                 u_char control;
  98                 u_char org_code[3];
  99                 u_short ether_type;
 100             } type_snap;
 101             struct {
 102                 u_char control;
 103                 u_char control_ext;
 104             } type_raw;
 105         } llc_un;
 106 };
 107 #define llc_control            llc_un.type_u.control
 108 #define llc_control_ext        llc_un.type_raw.control_ext
 109 #define llc_fid                llc_un.type_u.format_id
 110 #define llc_class              llc_un.type_u.class
 111 #define llc_window             llc_un.type_u.window_x2
 112 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 113 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 114 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 115 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 116 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 117 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 118
 119 /*
 120  * Don't use sizeof(struct llc_un) for LLC header sizes
 121  */
 122 #define LLC_ISFRAMELEN 4
 123 #define LLC_UFRAMELEN  3
 124 #define LLC_FRMRLEN    7
 125
 126 /*
 127  * Unnumbered LLC format commands
 128  */
 129 #define LLC_UI          0x3
 130 #define LLC_UI_P        0x13
 131 #define LLC_DISC        0x43
 132 #define LLC_DISC_P      0x53
 133 #define LLC_UA          0x63
 134 #define LLC_UA_P        0x73
 135 #define LLC_TEST        0xe3
 136 #define LLC_TEST_P      0xf3
 137 #define LLC_FRMR        0x87
 138 #define LLC_FRMR_P      0x97
 139 #define LLC_DM          0x0f
 140 #define LLC_DM_P        0x1f
 141 #define LLC_XID         0xaf
 142 #define LLC_XID_P       0xbf
 143 #define LLC_SABME       0x6f
 144 #define LLC_SABME_P     0x7f
 145
 146 /*
 147  * Supervisory LLC commands
 148  */
 149 #define LLC_RR          0x01
 150 #define LLC_RNR         0x05
 151 #define LLC_REJ         0x09
 152
 153 /*
 154  * Info format - dummy only
 155  */
 156 #define LLC_INFO        0x00
 157
 158 /*
 159  * ISO PDTR 10178 contains among others
 160  */
 161 #define LLC_X25_LSAP    0x7e
 162 #define LLC_SNAP_LSAP   0xaa
 163 #define LLC_ISO_LSAP    0xfe
 164
 165 #endif