1 /* $OpenBSD: if_llc.h,v 1.8 2013/01/17 00:48:04 henning Exp $ */ 2 /* $NetBSD: if_llc.h,v 1.6 1995/03/08 02:56:57 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)if_llc.h 8.1 (Berkeley) 6/10/93 33 */ 34 35 #ifndef _NET_IF_LLC_H_ 36 #define _NET_IF_LLC_H_ 37 38 /* 39 * IEEE 802.2 Link Level Control headers, for use in conjunction with 40 * 802.{3,4,5} media access control methods. 41 * 42 * Headers here do not use bit fields due to shortcomings in many 43 * compilers. 44 */ 45 46 struct llc { 47 u_int8_t llc_dsap; 48 u_int8_t llc_ssap; 49 union { 50 struct { 51 u_int8_t control; 52 u_int8_t format_id; 53 u_int8_t class; 54 u_int8_t window_x2; 55 } type_u; 56 struct { 57 u_int8_t num_snd_x2; 58 u_int8_t num_rcv_x2; 59 } type_i; 60 struct { 61 u_int8_t control; 62 u_int8_t num_rcv_x2; 63 } type_s; 64 struct { 65 u_int8_t control; 66 struct frmrinfo { 67 u_int8_t rej_pdu_0; 68 u_int8_t rej_pdu_1; 69 u_int8_t frmr_control; 70 u_int8_t frmr_control_ext; 71 u_int8_t frmr_cause; 72 } frmrinfo; 73 } type_frmr; 74 struct { 75 u_int8_t control; 76 u_int8_t org_code[3]; 77 u_int16_t ether_type; 78 } type_snap; 79 struct { 80 u_int8_t control; 81 u_int8_t control_ext; 82 } type_raw; 83 } llc_un; 84 }; 85 #define llc_control llc_un.type_u.control 86 #define llc_control_ext llc_un.type_raw.control_ext 87 #define llc_fid llc_un.type_u.format_id 88 #define llc_class llc_un.type_u.class 89 #define llc_window llc_un.type_u.window_x2 90 #define llc_frmrinfo llc_un.type_frmr.frmrinfo 91 #define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0 92 #define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1 93 #define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control 94 #define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext 95 #define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext 96 #define llc_snap llc_un.type_snap 97 98 /* 99 * Don't use sizeof(struct llc_un) for LLC header sizes 100 */ 101 #define LLC_UFRAMELEN 3 102 #define LLC_ISFRAMELEN 4 103 #define LLC_FRMRLEN 7 104 #define LLC_SNAPFRAMELEN 8 105 106 /* 107 * Unnumbered LLC format commands 108 */ 109 #define LLC_UI 0x3 110 #define LLC_UI_P 0x13 111 #define LLC_DISC 0x43 112 #define LLC_DISC_P 0x53 113 #define LLC_UA 0x63 114 #define LLC_UA_P 0x73 115 #define LLC_TEST 0xe3 116 #define LLC_TEST_P 0xf3 117 #define LLC_FRMR 0x87 118 #define LLC_FRMR_P 0x97 119 #define LLC_DM 0x0f 120 #define LLC_DM_P 0x1f 121 #define LLC_XID 0xaf 122 #define LLC_XID_P 0xbf 123 #define LLC_SABME 0x6f 124 #define LLC_SABME_P 0x7f 125 126 /* 127 * Supervisory LLC commands 128 */ 129 #define LLC_RR 0x01 130 #define LLC_RNR 0x05 131 #define LLC_REJ 0x09 132 133 /* 134 * Info format - dummy only 135 */ 136 #define LLC_INFO 0x00 137 138 /* 139 * ISO PDTR 10178 contains among others 140 */ 141 #define LLC_8021D_LSAP 0x42 142 #define LLC_X25_LSAP 0x7e 143 #define LLC_SNAP_LSAP 0xaa 144 #define LLC_ISO_LSAP 0xfe 145 #endif /* _NET_IF_LLC_H_ */ 146