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