294 lines
9.8 KiB
C
294 lines
9.8 KiB
C
/* $NetBSD: tp_tpdu.h,v 1.6 1994/06/29 06:40:41 cgd Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tp_tpdu.h 8.1 (Berkeley) 6/10/93
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*/
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/***********************************************************
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Copyright IBM Corporation 1987
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of IBM not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*
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* ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
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*/
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/*
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* This ghastly set of macros makes it possible to
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* refer to tpdu structures without going mad.
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*/
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#ifndef _NETISO_TP_TPDU_H_
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#define _NETISO_TP_TPDU_H_
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#ifndef BYTE_ORDER
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/*
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* Definitions for byte order,
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* according to byte significance from low address to high.
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*/
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#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
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#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
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#ifdef vax
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#define BYTE_ORDER LITTLE_ENDIAN
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#else
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#define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
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#endif
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#endif /* BYTE_ORDER */
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/* This much of a tpdu is the same for all types of tpdus (except
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* DT tpdus in class 0; their exceptions are handled by the data
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* structure below
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*/
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struct tpdu_fixed {
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u_char _tpduf_li:8, /* length indicator */
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#if BYTE_ORDER == LITTLE_ENDIAN
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_tpduf_cdt: 4, /* credit */
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_tpduf_type: 4; /* type of tpdu (DT, CR, etc.) */
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#endif
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#if BYTE_ORDER == BIG_ENDIAN
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_tpduf_type: 4, /* type of tpdu (DT, CR, etc.) */
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_tpduf_cdt: 4; /* credit */
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#endif
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u_short _tpduf_dref; /* destination ref; not in DT in class 0 */
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};
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#define tpdu_li _tpduf._tpduf_li
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#define tpdu_type _tpduf._tpduf_type
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#define tpdu_cdt _tpduf._tpduf_cdt
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#define tpdu_dref _tpduf._tpduf_dref
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struct tp0du {
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u_char _tp0_li,
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_tp0_cdt_type, /* same as in tpdu_fixed */
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#if BYTE_ORDER == BIG_ENDIAN
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_tp0_eot: 1, /* eot */
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_tp0_mbz: 7, /* must be zero */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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_tp0_mbz: 7, /* must be zero */
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_tp0_eot: 1, /* eot */
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#endif
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_tp0_notused: 8; /* data begins on this octet */
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};
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#define tp0du_eot _tp0_eot
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#define tp0du_mbz _tp0_mbz
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/*
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* This is used when the extended format seqence numbers are
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* being sent and received.
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*/
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/*
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* the seqeot field is an int that overlays the seq
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* and eot fields, this allows the htonl operation
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* to be applied to the entire 32 bit quantity, and
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* simplifies the structure definitions.
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*/
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union seq_type {
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struct {
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#if BYTE_ORDER == BIG_ENDIAN
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unsigned int st_eot:1, /* end-of-tsdu */
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st_seq:31; /* 31 bit sequence number */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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unsigned int st_seq:31, /* 31 bit sequence number */
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st_eot:1; /* end-of-tsdu */
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#endif
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} st;
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unsigned int s_seqeot;
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#define s_eot st.st_eot
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#define s_seq st.st_seq
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};
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/* Then most tpdu types have a portion that is always present but
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* differs among the tpdu types :
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*/
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union tpdu_fixed_rest {
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struct {
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u_short _tpdufr_sref, /* source reference */
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#if BYTE_ORDER == BIG_ENDIAN
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_tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */
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_tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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_tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */
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_tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */
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#endif
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_tpdufr_xx: 8; /* unused */
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} CRCC;
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#define tpdu_CRli _tpduf._tpduf_li
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#define tpdu_CRtype _tpduf._tpduf_type
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#define tpdu_CRcdt _tpduf._tpduf_cdt
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#define tpdu_CRdref_0 _tpduf._tpduf_dref
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#define tpdu_CRsref _tpdufr.CRCC._tpdufr_sref
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#define tpdu_sref _tpdufr.CRCC._tpdufr_sref
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#define tpdu_CRclass _tpdufr.CRCC._tpdufr_class
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#define tpdu_CRoptions _tpdufr.CRCC._tpdufr_opt
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#define tpdu_CCli _tpduf._tpduf_li
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#define tpdu_CCtype _tpduf._tpduf_type
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#define tpdu_CCcdt _tpduf._tpduf_cdt
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#define tpdu_CCdref _tpduf._tpduf_dref
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#define tpdu_CCsref _tpdufr.CRCC._tpdufr_sref
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#define tpdu_CCclass _tpdufr.CRCC._tpdufr_class
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#define tpdu_CCoptions _tpdufr.CRCC._tpdufr_opt
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/* OPTIONS and ADDL OPTIONS bits */
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#define TPO_USE_EFC 0x1
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#define TPO_XTD_FMT 0x2
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#define TPAO_USE_TXPD 0x1
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#define TPAO_NO_CSUM 0x2
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#define TPAO_USE_RCC 0x4
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#define TPAO_USE_NXPD 0x8
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struct {
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unsigned short _tpdufr_sref; /* source reference */
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unsigned char _tpdufr_reason; /* [ ISO 8073 13.5.3.d ] */
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} DR;
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#define tpdu_DRli _tpduf._tpduf_li
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#define tpdu_DRtype _tpduf._tpduf_type
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#define tpdu_DRdref _tpduf._tpduf_dref
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#define tpdu_DRsref _tpdufr.DR._tpdufr_sref
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#define tpdu_DRreason _tpdufr.DR._tpdufr_reason
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unsigned short _tpdufr_sref; /* source reference */
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#define tpdu_DCli _tpduf._tpduf_li
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#define tpdu_DCtype _tpduf._tpduf_type
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#define tpdu_DCdref _tpduf._tpduf_dref
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#define tpdu_DCsref _tpdufr._tpdufr_sref
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struct {
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#if BYTE_ORDER == BIG_ENDIAN
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unsigned char _tpdufr_eot:1, /* end-of-tsdu */
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_tpdufr_seq:7; /* 7 bit sequence number */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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unsigned char _tpdufr_seq:7, /* 7 bit sequence number */
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_tpdufr_eot:1; /* end-of-tsdu */
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#endif
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}SEQEOT;
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struct {
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#if BYTE_ORDER == BIG_ENDIAN
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unsigned int _tpdufr_Xeot:1, /* end-of-tsdu */
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_tpdufr_Xseq:31; /* 31 bit sequence number */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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unsigned int _tpdufr_Xseq:31, /* 31 bit sequence number */
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_tpdufr_Xeot:1; /* end-of-tsdu */
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#endif
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}SEQEOT31;
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unsigned int _tpdufr_Xseqeot;
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#define tpdu_seqeotX _tpdufr._tpdufr_Xseqeot
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#define tpdu_DTli _tpduf._tpduf_li
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#define tpdu_DTtype _tpduf._tpduf_type
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#define tpdu_DTdref _tpduf._tpduf_dref
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#define tpdu_DTseq _tpdufr.SEQEOT._tpdufr_seq
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#define tpdu_DTeot _tpdufr.SEQEOT._tpdufr_eot
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#define tpdu_DTseqX _tpdufr.SEQEOT31._tpdufr_Xseq
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#define tpdu_DTeotX _tpdufr.SEQEOT31._tpdufr_Xeot
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#define tpdu_XPDli _tpduf._tpduf_li
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#define tpdu_XPDtype _tpduf._tpduf_type
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#define tpdu_XPDdref _tpduf._tpduf_dref
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#define tpdu_XPDseq _tpdufr.SEQEOT._tpdufr_seq
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#define tpdu_XPDeot _tpdufr.SEQEOT._tpdufr_eot
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#define tpdu_XPDseqX _tpdufr.SEQEOT31._tpdufr_Xseq
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#define tpdu_XPDeotX _tpdufr.SEQEOT31._tpdufr_Xeot
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struct {
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#if BYTE_ORDER == BIG_ENDIAN
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unsigned _tpdufr_yrseq0:1, /* always zero */
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_tpdufr_yrseq:31; /* [ ISO 8073 13.9.3.d ] */
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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unsigned _tpdufr_yrseq:31, /* [ ISO 8073 13.9.3.d ] */
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_tpdufr_yrseq0:1; /* always zero */
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#endif
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unsigned short _tpdufr_cdt; /* [ ISO 8073 13.9.3.b ] */
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} AK31;
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#define tpdu_AKli _tpduf._tpduf_li
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#define tpdu_AKtype _tpduf._tpduf_type
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#define tpdu_AKdref _tpduf._tpduf_dref
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#define tpdu_AKseq _tpdufr.SEQEOT._tpdufr_seq
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#define tpdu_AKseqX _tpdufr.AK31._tpdufr_yrseq
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/* location of cdt depends on size of seq. numbers */
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#define tpdu_AKcdt _tpduf._tpduf_cdt
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#define tpdu_AKcdtX _tpdufr.AK31._tpdufr_cdt
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#define tpdu_XAKli _tpduf._tpduf_li
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#define tpdu_XAKtype _tpduf._tpduf_type
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#define tpdu_XAKdref _tpduf._tpduf_dref
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#define tpdu_XAKseq _tpdufr.SEQEOT._tpdufr_seq
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#define tpdu_XAKseqX _tpdufr.SEQEOT31._tpdufr_Xseq
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unsigned char _tpdu_ERreason; /* [ ISO 8073 13.12.3.c ] */
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#define tpdu_ERli _tpduf._tpduf_li
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#define tpdu_ERtype _tpduf._tpduf_type
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#define tpdu_ERdref _tpduf._tpduf_dref
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#define tpdu_ERreason _tpdufr._tpdu_ERreason
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};
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struct tpdu {
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struct tpdu_fixed _tpduf;
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union tpdu_fixed_rest _tpdufr;
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};
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#endif /* _NETISO_TP_TPDU_H_ */
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