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 #include <sys/appleapiopts.h>
  60
  61 /*
  62  * IEEE 802.2 Link Level Control headers, for use in conjunction with
  63  * 802.{3,4,5} media access control methods.
  64  *
  65  * Headers here do not use bit fields due to shortcomings in many
  66  * compilers.
  67  */
  68
  69 struct llc {
  70         u_char  llc_dsap;
  71         u_char  llc_ssap;
  72         union {
  73             struct {
  74                 u_char control;
  75                 u_char format_id;
  76                 u_char class_id;
  77                 u_char window_x2;
  78             } type_u;
  79             struct {
  80                 u_char num_snd_x2;
  81                 u_char num_rcv_x2;
  82             } type_i;
  83             struct {
  84                 u_char control;
  85                 u_char num_rcv_x2;
  86             } type_s;
  87             struct {
  88                 u_char control;
  89                 struct frmrinfo {
  90                         u_char rej_pdu_0;
  91                         u_char rej_pdu_1;
  92                         u_char frmr_control;
  93                         u_char frmr_control_ext;
  94                         u_char frmr_cause;
  95                 } frmrinfo;
  96             } type_frmr;
  97             struct {
  98                 u_char control;
  99                 u_char org_code[3];
 100                 u_short ether_type;
 101             } type_snap;
 102             struct {
 103                 u_char control;
 104                 u_char control_ext;
 105             } type_raw;
 106         } llc_un;
 107 };
 108 #define llc_control            llc_un.type_u.control
 109 #define llc_control_ext        llc_un.type_raw.control_ext
 110 #define llc_fid                llc_un.type_u.format_id
 111 #define llc_class              llc_un.type_u.class_id
 112 #define llc_window             llc_un.type_u.window_x2
 113 #define llc_frmrinfo           llc_un.type_frmr.frmrinfo
 114 #define llc_frmr_pdu0          llc_un.type_frmr.frmrinfo.rej_pdu0
 115 #define llc_frmr_pdu1          llc_un.type_frmr.frmrinfo.rej_pdu1
 116 #define llc_frmr_control       llc_un.type_frmr.frmrinfo.frmr_control
 117 #define llc_frmr_control_ext   llc_un.type_frmr.frmrinfo.frmr_control_ext
 118 #define llc_frmr_cause         llc_un.type_frmr.frmrinfo.frmr_control_ext
 119
 120 /*
 121  * Don't use sizeof(struct llc_un) for LLC header sizes
 122  */
 123 #define LLC_ISFRAMELEN 4
 124 #define LLC_UFRAMELEN  3
 125 #define LLC_FRMRLEN    7
 126
 127 /*
 128  * Unnumbered LLC format commands
 129  */
 130 #define LLC_UI          0x3
 131 #define LLC_UI_P        0x13
 132 #define LLC_DISC        0x43
 133 #define LLC_DISC_P      0x53
 134 #define LLC_UA          0x63
 135 #define LLC_UA_P        0x73
 136 #define LLC_TEST        0xe3
 137 #define LLC_TEST_P      0xf3
 138 #define LLC_FRMR        0x87
 139 #define LLC_FRMR_P      0x97
 140 #define LLC_DM          0x0f
 141 #define LLC_DM_P        0x1f
 142 #define LLC_XID         0xaf
 143 #define LLC_XID_P       0xbf
 144 #define LLC_SABME       0x6f
 145 #define LLC_SABME_P     0x7f
 146
 147 /*
 148  * Supervisory LLC commands
 149  */
 150 #define LLC_RR          0x01
 151 #define LLC_RNR         0x05
 152 #define LLC_REJ         0x09
 153
 154 /*
 155  * Info format - dummy only
 156  */
 157 #define LLC_INFO        0x00
 158
 159 /*
 160  * ISO PDTR 10178 contains among others
 161  */
 162 #define LLC_X25_LSAP    0x7e
 163 #define LLC_SNAP_LSAP   0xaa
 164 #define LLC_ISO_LSAP    0xfe
 165
 166 #endif