Annotation of sys/net/if_llc.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_llc.h,v 1.7 2003/06/02 23:28:12 millert 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 shortcommings 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_ */
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