bsd/net/if_llc.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1988, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)if_llc.h    8.1 (Berkeley) 6/10/93
  61  */
  62
  63 #ifndef _NET_IF_LLC_H_
  64 #define _NET_IF_LLC_H_
  65 #include <sys/appleapiopts.h>
  66
  67 /*
  68  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  69  * 802.{3,4,5} media access control methods.
  70  *
  71  * Headers here do not use bit fields due to shortcomings in many
  72  * compilers.
  73  */
  74
  75 struct llc {
  76         u_char  llc_dsap;
  77         u_char  llc_ssap;
  78         union {
  79             struct {
  80                 u_char control;
  81                 u_char format_id;
  82                 u_char class_id;
  83                 u_char window_x2;
  84             } type_u;
  85             struct {
  86                 u_char num_snd_x2;
  87                 u_char num_rcv_x2;
  88             } type_i;
  89             struct {
  90                 u_char control;
  91                 u_char num_rcv_x2;
  92             } type_s;
  93             struct {
  94                 u_char control;
  95                 struct frmrinfo {
  96                         u_char rej_pdu_0;
  97                         u_char rej_pdu_1;
  98                         u_char frmr_control;
  99                         u_char frmr_control_ext;
 100                         u_char frmr_cause;
 101                 } frmrinfo;
 102             } type_frmr;
 103             struct {
 104                 u_char control;
 105                 u_char org_code[3];
 106                 u_short ether_type;
 107             } type_snap;
 108             struct {
 109                 u_char control;
 110                 u_char control_ext;
 111             } type_raw;
 112         } llc_un;
 113 };
 114 #define llc_control            llc_un.type_u.control
 115 #define llc_control_ext        llc_un.type_raw.control_ext
 116 #define llc_fid                llc_un.type_u.format_id
 117 #define llc_class              llc_un.type_u.class_id
 118 #define llc_window             llc_un.type_u.window_x2
 119 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 120 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 121 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 122 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 123 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 124 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 125
 126 /*
 127  * Don't use sizeof(struct llc_un) for LLC header sizes
 128  */
 129 #define LLC_ISFRAMELEN 4
 130 #define LLC_UFRAMELEN  3
 131 #define LLC_FRMRLEN    7
 132
 133 /*
 134  * Unnumbered LLC format commands
 135  */
 136 #define LLC_UI          0x3
 137 #define LLC_UI_P        0x13
 138 #define LLC_DISC        0x43
 139 #define LLC_DISC_P      0x53
 140 #define LLC_UA          0x63
 141 #define LLC_UA_P        0x73
 142 #define LLC_TEST        0xe3
 143 #define LLC_TEST_P      0xf3
 144 #define LLC_FRMR        0x87
 145 #define LLC_FRMR_P      0x97
 146 #define LLC_DM          0x0f
 147 #define LLC_DM_P        0x1f
 148 #define LLC_XID         0xaf
 149 #define LLC_XID_P       0xbf
 150 #define LLC_SABME       0x6f
 151 #define LLC_SABME_P     0x7f
 152
 153 /*
 154  * Supervisory LLC commands
 155  */
 156 #define LLC_RR          0x01
 157 #define LLC_RNR         0x05
 158 #define LLC_REJ         0x09
 159
 160 /*
 161  * Info format - dummy only
 162  */
 163 #define LLC_INFO        0x00
 164
 165 /*
 166  * ISO PDTR 10178 contains among others
 167  */
 168 #define LLC_X25_LSAP    0x7e
 169 #define LLC_SNAP_LSAP   0xaa
 170 #define LLC_ISO_LSAP    0xfe
 171
 172 #endif