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 | |