bsd/net/if_llc.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1988, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)if_llc.h    8.1 (Berkeley) 6/10/93
  63  */
  64
  65 #ifndef _NET_IF_LLC_H_
  66 #define _NET_IF_LLC_H_
  67 #include <sys/appleapiopts.h>
  68
  69 /*
  70  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  71  * 802.{3,4,5} media access control methods.
  72  *
  73  * Headers here do not use bit fields due to shortcomings in many
  74  * compilers.
  75  */
  76
  77 struct llc {
  78         u_char  llc_dsap;
  79         u_char  llc_ssap;
  80         union {
  81             struct {
  82                 u_char control;
  83                 u_char format_id;
  84                 u_char class_id;
  85                 u_char window_x2;
  86             } type_u;
  87             struct {
  88                 u_char num_snd_x2;
  89                 u_char num_rcv_x2;
  90             } type_i;
  91             struct {
  92                 u_char control;
  93                 u_char num_rcv_x2;
  94             } type_s;
  95             struct {
  96                 u_char control;
  97                 struct frmrinfo {
  98                         u_char rej_pdu_0;
  99                         u_char rej_pdu_1;
 100                         u_char frmr_control;
 101                         u_char frmr_control_ext;
 102                         u_char frmr_cause;
 103                 } frmrinfo;
 104             } type_frmr;
 105             struct {
 106                 u_char control;
 107                 u_char org_code[3];
 108                 u_short ether_type;
 109             } type_snap;
 110             struct {
 111                 u_char control;
 112                 u_char control_ext;
 113             } type_raw;
 114         } llc_un;
 115 };
 116 #define llc_control            llc_un.type_u.control
 117 #define llc_control_ext        llc_un.type_raw.control_ext
 118 #define llc_fid                llc_un.type_u.format_id
 119 #define llc_class              llc_un.type_u.class_id
 120 #define llc_window             llc_un.type_u.window_x2
 121 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 122 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 123 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 124 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 125 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 126 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 127
 128 /*
 129  * Don't use sizeof(struct llc_un) for LLC header sizes
 130  */
 131 #define LLC_ISFRAMELEN 4
 132 #define LLC_UFRAMELEN  3
 133 #define LLC_FRMRLEN    7
 134
 135 /*
 136  * Unnumbered LLC format commands
 137  */
 138 #define LLC_UI          0x3
 139 #define LLC_UI_P        0x13
 140 #define LLC_DISC        0x43
 141 #define LLC_DISC_P      0x53
 142 #define LLC_UA          0x63
 143 #define LLC_UA_P        0x73
 144 #define LLC_TEST        0xe3
 145 #define LLC_TEST_P      0xf3
 146 #define LLC_FRMR        0x87
 147 #define LLC_FRMR_P      0x97
 148 #define LLC_DM          0x0f
 149 #define LLC_DM_P        0x1f
 150 #define LLC_XID         0xaf
 151 #define LLC_XID_P       0xbf
 152 #define LLC_SABME       0x6f
 153 #define LLC_SABME_P     0x7f
 154
 155 /*
 156  * Supervisory LLC commands
 157  */
 158 #define LLC_RR          0x01
 159 #define LLC_RNR         0x05
 160 #define LLC_REJ         0x09
 161
 162 /*
 163  * Info format - dummy only
 164  */
 165 #define LLC_INFO        0x00
 166
 167 /*
 168  * ISO PDTR 10178 contains among others
 169  */
 170 #define LLC_X25_LSAP    0x7e
 171 #define LLC_SNAP_LSAP   0xaa
 172 #define LLC_ISO_LSAP    0xfe
 173
 174 #endif