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1.1 root 1: /***********************************************************
2: Copyright IBM Corporation 1987
3:
4: All Rights Reserved
5:
6: Permission to use, copy, modify, and distribute this software and its
7: documentation for any purpose and without fee is hereby granted,
8: provided that the above copyright notice appear in all copies and that
9: both that copyright notice and this permission notice appear in
10: supporting documentation, and that the name of IBM not be
11: used in advertising or publicity pertaining to distribution of the
12: software without specific, written prior permission.
13:
14: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
15: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
16: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
17: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
18: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
19: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
20: SOFTWARE.
21:
22: ******************************************************************/
23:
24: /*
25: * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
26: */
27: /*
28: * ARGO TP
29: *
30: * $Header: tp_tpdu.h,v 4.4 88/07/26 16:45:40 nhall Exp $
31: * $Source: /usr/argo/sys/netiso/RCS/tp_tpdu.h,v $
32: * @(#)tp_tpdu.h 7.3 (Berkeley) 8/29/89 *
33: *
34: * This ghastly set of macros makes it possible to
35: * refer to tpdu structures without going mad.
36: */
37:
38: #ifndef __TP_TPDU__
39: #define __TP_TPDU__
40:
41: #ifndef BYTE_ORDER
42: /*
43: * Definitions for byte order,
44: * according to byte significance from low address to high.
45: */
46: #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
47: #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
48: #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
49:
50: #ifdef vax
51: #define BYTE_ORDER LITTLE_ENDIAN
52: #else
53: #define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
54: #endif
55: #endif BYTE_ORDER
56:
57: /* This much of a tpdu is the same for all types of tpdus (except
58: * DT tpdus in class 0; their exceptions are handled by the data
59: * structure below
60: */
61: struct tpdu_fixed {
62: u_char _tpduf_li:8, /* length indicator */
63: #if BYTE_ORDER == LITTLE_ENDIAN
64: _tpduf_cdt: 4, /* credit */
65: _tpduf_type: 4; /* type of tpdu (DT, CR, etc.) */
66: #endif
67: #if BYTE_ORDER == BIG_ENDIAN
68: _tpduf_type: 4, /* type of tpdu (DT, CR, etc.) */
69: _tpduf_cdt: 4; /* credit */
70: #endif
71: u_short _tpduf_dref; /* destination ref; not in DT in class 0 */
72: };
73:
74: #define tpdu_li _tpduf._tpduf_li
75: #define tpdu_type _tpduf._tpduf_type
76: #define tpdu_cdt _tpduf._tpduf_cdt
77: #define tpdu_dref _tpduf._tpduf_dref
78:
79: struct tp0du {
80: u_char _tp0_li,
81: _tp0_cdt_type, /* same as in tpdu_fixed */
82: #if BYTE_ORDER == BIG_ENDIAN
83: _tp0_eot: 1, /* eot */
84: _tp0_mbz: 7, /* must be zero */
85: #endif
86: #if BYTE_ORDER == LITTLE_ENDIAN
87: _tp0_mbz: 7, /* must be zero */
88: _tp0_eot: 1, /* eot */
89: #endif
90: _tp0_notused: 8; /* data begins on this octet */
91: };
92:
93: #define tp0du_eot _tp0_eot
94: #define tp0du_mbz _tp0_mbz
95:
96: /*
97: * This is used when the extended format seqence numbers are
98: * being sent and received.
99: */
100: /*
101: * the seqeot field is an int that overlays the seq
102: * and eot fields, this allows the htonl operation
103: * to be applied to the entire 32 bit quantity, and
104: * simplifies the structure definitions.
105: */
106: union seq_type {
107: struct {
108: #if BYTE_ORDER == BIG_ENDIAN
109: unsigned int st_eot:1, /* end-of-tsdu */
110: st_seq:31; /* 31 bit sequence number */
111: #endif
112: #if BYTE_ORDER == LITTLE_ENDIAN
113: unsigned int st_seq:31, /* 31 bit sequence number */
114: st_eot:1; /* end-of-tsdu */
115: #endif
116: } st;
117: unsigned int s_seqeot;
118: #define s_eot st.st_eot
119: #define s_seq st.st_seq
120: };
121:
122: /* Then most tpdu types have a portion that is always present but
123: * differs among the tpdu types :
124: */
125: union tpdu_fixed_rest {
126:
127: struct {
128: u_short _tpdufr_sref, /* source reference */
129: #if BYTE_ORDER == BIG_ENDIAN
130: _tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */
131: _tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */
132: #endif
133: #if BYTE_ORDER == LITTLE_ENDIAN
134: _tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */
135: _tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */
136: #endif
137: _tpdufr_xx: 8; /* unused */
138: } CRCC;
139:
140: #define tpdu_CRli _tpduf._tpduf_li
141: #define tpdu_CRtype _tpduf._tpduf_type
142: #define tpdu_CRcdt _tpduf._tpduf_cdt
143: #define tpdu_CRdref_0 _tpduf._tpduf_dref
144: #define tpdu_CRsref _tpdufr.CRCC._tpdufr_sref
145: #define tpdu_sref _tpdufr.CRCC._tpdufr_sref
146: #define tpdu_CRclass _tpdufr.CRCC._tpdufr_class
147: #define tpdu_CRoptions _tpdufr.CRCC._tpdufr_opt
148:
149: #define tpdu_CCli _tpduf._tpduf_li
150: #define tpdu_CCtype _tpduf._tpduf_type
151: #define tpdu_CCcdt _tpduf._tpduf_cdt
152: #define tpdu_CCdref _tpduf._tpduf_dref
153: #define tpdu_CCsref _tpdufr.CRCC._tpdufr_sref
154: #define tpdu_CCclass _tpdufr.CRCC._tpdufr_class
155: #define tpdu_CCoptions _tpdufr.CRCC._tpdufr_opt
156:
157: /* OPTIONS and ADDL OPTIONS bits */
158: #define TPO_USE_EFC 0x1
159: #define TPO_XTD_FMT 0x2
160: #define TPAO_USE_TXPD 0x1
161: #define TPAO_NO_CSUM 0x2
162: #define TPAO_USE_RCC 0x4
163: #define TPAO_USE_NXPD 0x8
164:
165: struct {
166: unsigned short _tpdufr_sref; /* source reference */
167: unsigned char _tpdufr_reason; /* [ ISO 8073 13.5.3.d ] */
168: } DR;
169: #define tpdu_DRli _tpduf._tpduf_li
170: #define tpdu_DRtype _tpduf._tpduf_type
171: #define tpdu_DRdref _tpduf._tpduf_dref
172: #define tpdu_DRsref _tpdufr.DR._tpdufr_sref
173: #define tpdu_DRreason _tpdufr.DR._tpdufr_reason
174:
175: unsigned short _tpdufr_sref; /* source reference */
176:
177: #define tpdu_DCli _tpduf._tpduf_li
178: #define tpdu_DCtype _tpduf._tpduf_type
179: #define tpdu_DCdref _tpduf._tpduf_dref
180: #define tpdu_DCsref _tpdufr._tpdufr_sref
181:
182: struct {
183: #if BYTE_ORDER == BIG_ENDIAN
184: unsigned char _tpdufr_eot:1, /* end-of-tsdu */
185: _tpdufr_seq:7; /* 7 bit sequence number */
186: #endif
187: #if BYTE_ORDER == LITTLE_ENDIAN
188: unsigned char _tpdufr_seq:7, /* 7 bit sequence number */
189: _tpdufr_eot:1; /* end-of-tsdu */
190: #endif
191: }SEQEOT;
192: struct {
193: #if BYTE_ORDER == BIG_ENDIAN
194: unsigned int _tpdufr_Xeot:1, /* end-of-tsdu */
195: _tpdufr_Xseq:31; /* 31 bit sequence number */
196: #endif
197: #if BYTE_ORDER == LITTLE_ENDIAN
198: unsigned int _tpdufr_Xseq:31, /* 31 bit sequence number */
199: _tpdufr_Xeot:1; /* end-of-tsdu */
200: #endif
201: }SEQEOT31;
202: unsigned int _tpdufr_Xseqeot;
203: #define tpdu_seqeotX _tpdufr._tpdufr_Xseqeot
204:
205: #define tpdu_DTli _tpduf._tpduf_li
206: #define tpdu_DTtype _tpduf._tpduf_type
207: #define tpdu_DTdref _tpduf._tpduf_dref
208: #define tpdu_DTseq _tpdufr.SEQEOT._tpdufr_seq
209: #define tpdu_DTeot _tpdufr.SEQEOT._tpdufr_eot
210: #define tpdu_DTseqX _tpdufr.SEQEOT31._tpdufr_Xseq
211: #define tpdu_DTeotX _tpdufr.SEQEOT31._tpdufr_Xeot
212:
213: #define tpdu_XPDli _tpduf._tpduf_li
214: #define tpdu_XPDtype _tpduf._tpduf_type
215: #define tpdu_XPDdref _tpduf._tpduf_dref
216: #define tpdu_XPDseq _tpdufr.SEQEOT._tpdufr_seq
217: #define tpdu_XPDeot _tpdufr.SEQEOT._tpdufr_eot
218: #define tpdu_XPDseqX _tpdufr.SEQEOT31._tpdufr_Xseq
219: #define tpdu_XPDeotX _tpdufr.SEQEOT31._tpdufr_Xeot
220:
221: struct {
222: #if BYTE_ORDER == BIG_ENDIAN
223: unsigned _tpdufr_yrseq0:1, /* always zero */
224: _tpdufr_yrseq:31; /* [ ISO 8073 13.9.3.d ] */
225: #endif
226: #if BYTE_ORDER == LITTLE_ENDIAN
227: unsigned _tpdufr_yrseq:31, /* [ ISO 8073 13.9.3.d ] */
228: _tpdufr_yrseq0:1; /* always zero */
229: #endif
230: unsigned short _tpdufr_cdt; /* [ ISO 8073 13.9.3.b ] */
231: } AK31;
232:
233: #define tpdu_AKli _tpduf._tpduf_li
234: #define tpdu_AKtype _tpduf._tpduf_type
235: #define tpdu_AKdref _tpduf._tpduf_dref
236: #define tpdu_AKseq _tpdufr.SEQEOT._tpdufr_seq
237: #define tpdu_AKseqX _tpdufr.AK31._tpdufr_yrseq
238: /* location of cdt depends on size of seq. numbers */
239: #define tpdu_AKcdt _tpduf._tpduf_cdt
240: #define tpdu_AKcdtX _tpdufr.AK31._tpdufr_cdt
241:
242: #define tpdu_XAKli _tpduf._tpduf_li
243: #define tpdu_XAKtype _tpduf._tpduf_type
244: #define tpdu_XAKdref _tpduf._tpduf_dref
245: #define tpdu_XAKseq _tpdufr.SEQEOT._tpdufr_seq
246: #define tpdu_XAKseqX _tpdufr.SEQEOT31._tpdufr_Xseq
247:
248: unsigned char _tpdu_ERreason; /* [ ISO 8073 13.12.3.c ] */
249:
250: #define tpdu_ERli _tpduf._tpduf_li
251: #define tpdu_ERtype _tpduf._tpduf_type
252: #define tpdu_ERdref _tpduf._tpduf_dref
253: #define tpdu_ERreason _tpdufr._tpdu_ERreason
254:
255: };
256:
257: struct tpdu {
258: struct tpdu_fixed _tpduf;
259: union tpdu_fixed_rest _tpdufr;
260: };
261:
262: #endif __TP_TPDU__
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