if_llc.h
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上传日期:2008-05-12
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文件大小:5k
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VxWorks
开发平台:
C/C++
- /* if_llc.h - link level control header file */
- /* Copyright 1984 - 1999 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)if_llc.h 8.1 (Berkeley) 6/10/93
- */
- /*
- modification history
- --------------------
- 01f,17mar99,spm recovered orphaned code from tor2_0_x branch (SPR #25770)
- 01e,18nov98,n_s added LLC_SNAP_FRAMELEN
- 01d,29sep98,fle doc : made it refgen parsable
- 01c,22dec97,vin corrected the field name "class" clashing with c++ keyword.
- 01b,04oct96,gnn Fixed the ifndef for this file.
- 01a,03mar96,vin created from BSD4.4lite2.
- */
- #ifndef __INCif_llch
- #define __INCif_llch
- #ifdef __cplusplus
- extern "C" {
- #endif
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * IEEE 802.2 Link Level Control headers, for use in conjunction with
- * 802.{3,4,5} media access control methods.
- *
- * Headers here do not use bit fields due to shortcommings in many
- * compilers.
- */
- struct llc {
- u_char llc_dsap;
- u_char llc_ssap;
- union {
- struct {
- u_char control;
- u_char format_id;
- u_char u_class;
- u_char window_x2;
- } type_u;
- struct {
- u_char num_snd_x2;
- u_char num_rcv_x2;
- } type_i;
- struct {
- u_char control;
- u_char num_rcv_x2;
- } type_s;
- struct {
- u_char control;
- struct frmrinfo {
- u_char rej_pdu_0;
- u_char rej_pdu_1;
- u_char frmr_control;
- u_char frmr_control_ext;
- u_char frmr_cause;
- } frmrinfo;
- } type_frmr;
- struct {
- u_char control;
- u_char org_code[3];
- u_short ether_type;
- } type_snap;
- struct {
- u_char control;
- u_char control_ext;
- } type_raw;
- } llc_un;
- };
- #define llc_control llc_un.type_u.control
- #define llc_control_ext llc_un.type_raw.control_ext
- #define llc_fid llc_un.type_u.format_id
- #define llc_class llc_un.type_u.u_class
- #define llc_window llc_un.type_u.window_x2
- #define llc_frmrinfo llc_un.type_frmr.frmrinfo
- #define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0
- #define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1
- #define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control
- #define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext
- #define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext
- /*
- * Don't use sizeof(struct llc_un) for LLC header sizes
- */
- #define LLC_ISFRAMELEN 4
- #define LLC_UFRAMELEN 3
- #define LLC_FRMRLEN 7
- #define LLC_SNAP_FRAMELEN 8 /* struct llc length when using type_snap */
- /*
- * Unnumbered LLC format commands
- */
- #define LLC_UI 0x3
- #define LLC_UI_P 0x13
- #define LLC_DISC 0x43
- #define LLC_DISC_P 0x53
- #define LLC_UA 0x63
- #define LLC_UA_P 0x73
- #define LLC_TEST 0xe3
- #define LLC_TEST_P 0xf3
- #define LLC_FRMR 0x87
- #define LLC_FRMR_P 0x97
- #define LLC_DM 0x0f
- #define LLC_DM_P 0x1f
- #define LLC_XID 0xaf
- #define LLC_XID_P 0xbf
- #define LLC_SABME 0x6f
- #define LLC_SABME_P 0x7f
- /*
- * Supervisory LLC commands
- */
- #define LLC_RR 0x01
- #define LLC_RNR 0x05
- #define LLC_REJ 0x09
- /*
- * Info format - dummy only
- */
- #define LLC_INFO 0x00
- /*
- * ISO PDTR 10178 contains among others
- */
- #define LLC_X25_LSAP 0x7e
- #define LLC_SNAP_LSAP 0xaa
- #define LLC_ISO_LSAP 0xfe
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCif_llch */