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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1988, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)if_llc.h 8.1 (Berkeley) 6/10/93
59: */
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 shortcommings in many
66: * compilers.
67: */
68:
69: struct llc {
70: u_int8_t llc_dsap;
71: u_int8_t llc_ssap;
72: union {
73: struct {
74: u_int8_t control;
75: u_int8_t format_id;
76: u_int8_t class;
77: u_int8_t window_x2;
78: } type_u;
79: struct {
80: u_int8_t num_snd_x2;
81: u_int8_t num_rcv_x2;
82: } type_i;
83: struct {
84: u_int8_t control;
85: u_int8_t num_rcv_x2;
86: } type_s;
87: struct {
88: u_int8_t control;
89: struct frmrinfo {
90: u_int8_t rej_pdu_0;
91: u_int8_t rej_pdu_1;
92: u_int8_t frmr_control;
93: u_int8_t frmr_control_ext;
94: u_int8_t frmr_cause;
95: } frmrinfo;
96: } type_frmr;
97: struct {
98: u_int8_t control;
99: u_int8_t org_code[3];
100: u_int16_t ether_type;
101: } type_snap;
102: struct {
103: u_int8_t control;
104: u_int8_t 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
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
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