1 /* 2 * Copyright (c) 2000,2009 Apple 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. Neither the name of the University nor the names of its contributors 41 * may be used to endorse or promote products derived from this software 42 * without specific prior written permission. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 * 56 * @(#)if_llc.h 8.1 (Berkeley) 6/10/93 57 */ 58 59 #ifndef _NET_IF_LLC_H_ 60 #define _NET_IF_LLC_H_ 61 #include <sys/appleapiopts.h> 62 #include <sys/types.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_int8_t llc_dsap; 74 u_int8_t llc_ssap; 75 union { 76 struct { 77 u_int8_t control; 78 u_int8_t format_id; 79 u_int8_t class_id; 80 u_int8_t window_x2; 81 } type_u; 82 struct { 83 u_int8_t num_snd_x2; 84 u_int8_t num_rcv_x2; 85 } type_i; 86 struct { 87 u_int8_t control; 88 u_int8_t num_rcv_x2; 89 } type_s; 90 struct { 91 u_int8_t control; 92 /* 93 * We cannot put the following fields in a structure because 94 * the structure rounding might cause padding. 95 */ 96 u_int8_t frmr_rej_pdu0; 97 u_int8_t frmr_rej_pdu1; 98 u_int8_t frmr_control; 99 u_int8_t frmr_control_ext; 100 u_int8_t frmr_cause; 101 } type_frmr; 102 struct { 103 u_int8_t control; 104 u_int8_t org_code[3]; 105 u_int16_t ether_type; 106 } type_snap __attribute__((__packed__)); 107 struct { 108 u_int8_t control; 109 u_int8_t control_ext; 110 } type_raw; 111 } llc_un; 112 } __attribute__((__packed__)); 113 114 struct frmrinfo { 115 u_int8_t frmr_rej_pdu0; 116 u_int8_t frmr_rej_pdu1; 117 u_int8_t frmr_control; 118 u_int8_t frmr_control_ext; 119 u_int8_t frmr_cause; 120 } __attribute__((__packed__)); 121 122 #define llc_control llc_un.type_u.control 123 #define llc_control_ext llc_un.type_raw.control_ext 124 #define llc_fid llc_un.type_u.format_id 125 #define llc_class llc_un.type_u.class 126 #define llc_window llc_un.type_u.window_x2 127 #define llc_frmrinfo llc_un.type_frmr.frmr_rej_pdu0 128 #define llc_frmr_pdu0 llc_un.type_frmr.frmr_rej_pdu0 129 #define llc_frmr_pdu1 llc_un.type_frmr.frmr_rej_pdu1 130 #define llc_frmr_control llc_un.type_frmr.frmr_control 131 #define llc_frmr_control_ext llc_un.type_frmr.frmr_control_ext 132 #define llc_frmr_cause llc_un.type_frmr.frmr_cause 133 #define llc_snap llc_un.type_snap 134 135 /* 136 * Don't use sizeof(struct llc_un) for LLC header sizes 137 */ 138 #define LLC_ISFRAMELEN 4 139 #define LLC_UFRAMELEN 3 140 #define LLC_FRMRLEN 7 141 #define LLC_SNAPFRAMELEN 8 142 143 /* 144 * Unnumbered LLC format commands 145 */ 146 #define LLC_UI 0x3 147 #define LLC_UI_P 0x13 148 #define LLC_DISC 0x43 149 #define LLC_DISC_P 0x53 150 #define LLC_UA 0x63 151 #define LLC_UA_P 0x73 152 #define LLC_TEST 0xe3 153 #define LLC_TEST_P 0xf3 154 #define LLC_FRMR 0x87 155 #define LLC_FRMR_P 0x97 156 #define LLC_DM 0x0f 157 #define LLC_DM_P 0x1f 158 #define LLC_XID 0xaf 159 #define LLC_XID_P 0xbf 160 #define LLC_SABME 0x6f 161 #define LLC_SABME_P 0x7f 162 163 /* 164 * Supervisory LLC commands 165 */ 166 #define LLC_RR 0x01 167 #define LLC_RNR 0x05 168 #define LLC_REJ 0x09 169 170 /* 171 * Info format - dummy only 172 */ 173 #define LLC_INFO 0x00 174 175 /* 176 * ISO PDTR 10178 contains among others 177 */ 178 #define LLC_8021D_LSAP 0x42 179 #define LLC_X25_LSAP 0x7e 180 #define LLC_SNAP_LSAP 0xaa 181 #define LLC_ISO_LSAP 0xfe 182 183 /* 184 * LLC XID definitions from 802.2, as needed 185 */ 186 187 #define LLC_XID_FORMAT_BASIC 0x81 188 #define LLC_XID_BASIC_MINLEN (LLC_UFRAMELEN + 3) 189 190 #define LLC_XID_CLASS_I 0x1 191 #define LLC_XID_CLASS_II 0x3 192 #define LLC_XID_CLASS_III 0x5 193 #define LLC_XID_CLASS_IV 0x7 194 195 196 #endif /* !_NET_IF_LLC_H_ */ 197