we do not want to shift by the block size, which is much larger than
[dragonfly.git] / sys / net / if_llc.h
blob714c95110e9e2c39b86e7afc4636a8222decbac7
1 /*
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
33 * @(#)if_llc.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/if_llc.h,v 1.7 1999/08/28 00:48:18 peter Exp $
35 * $DragonFly: src/sys/net/if_llc.h,v 1.5 2006/05/20 02:42:08 dillon Exp $
38 #ifndef _NET_IF_LLC_H_
39 #define _NET_IF_LLC_H_
41 #ifndef _SYS_TYPES_H_
42 #include <sys/types.h>
43 #endif
46 * IEEE 802.2 Link Level Control headers, for use in conjunction with
47 * 802.{3,4,5} media access control methods.
49 * Headers here do not use bit fields due to shortcomings in many
50 * compilers.
53 struct llc {
54 u_char llc_dsap;
55 u_char llc_ssap;
56 union {
57 struct {
58 u_char control;
59 u_char format_id;
60 u_char class;
61 u_char window_x2;
62 } type_u;
63 struct {
64 u_char num_snd_x2;
65 u_char num_rcv_x2;
66 } type_i;
67 struct {
68 u_char control;
69 u_char num_rcv_x2;
70 } type_s;
71 struct {
72 u_char control;
73 struct frmrinfo {
74 u_char rej_pdu_0;
75 u_char rej_pdu_1;
76 u_char frmr_control;
77 u_char frmr_control_ext;
78 u_char frmr_cause;
79 } frmrinfo;
80 } type_frmr;
81 struct {
82 u_char control;
83 u_char org_code[3];
84 u_short ether_type;
85 } type_snap;
86 struct {
87 u_char control;
88 u_char control_ext;
89 } type_raw;
90 } llc_un;
92 #define llc_control llc_un.type_u.control
93 #define llc_control_ext llc_un.type_raw.control_ext
94 #define llc_fid llc_un.type_u.format_id
95 #define llc_class llc_un.type_u.class
96 #define llc_window llc_un.type_u.window_x2
97 #define llc_frmrinfo llc_un.type_frmr.frmrinfo
98 #define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0
99 #define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1
100 #define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control
101 #define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext
102 #define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext
103 #define llc_snap llc_un.type_snap
106 * Don't use sizeof(struct llc_un) for LLC header sizes
108 #define LLC_ISFRAMELEN 4
109 #define LLC_UFRAMELEN 3
110 #define LLC_FRMRLEN 7
113 * Unnumbered LLC format commands
115 #define LLC_UI 0x3
116 #define LLC_UI_P 0x13
117 #define LLC_DISC 0x43
118 #define LLC_DISC_P 0x53
119 #define LLC_UA 0x63
120 #define LLC_UA_P 0x73
121 #define LLC_TEST 0xe3
122 #define LLC_TEST_P 0xf3
123 #define LLC_FRMR 0x87
124 #define LLC_FRMR_P 0x97
125 #define LLC_DM 0x0f
126 #define LLC_DM_P 0x1f
127 #define LLC_XID 0xaf
128 #define LLC_XID_P 0xbf
129 #define LLC_SABME 0x6f
130 #define LLC_SABME_P 0x7f
133 * Supervisory LLC commands
135 #define LLC_RR 0x01
136 #define LLC_RNR 0x05
137 #define LLC_REJ 0x09
140 * Info format - dummy only
142 #define LLC_INFO 0x00
145 * ISO PDTR 10178 contains among others
147 #define LLC_8021D_LSAP 0x42
148 #define LLC_X25_LSAP 0x7e
149 #define LLC_SNAP_LSAP 0xaa
150 #define LLC_ISO_LSAP 0xfe
152 #endif