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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 | * | |
33 | * This ghastly set of macros makes it possible to | |
34 | * refer to tpdu structures without going mad. | |
35 | */ | |
36 | ||
37 | #ifndef __TP_TPDU__ | |
38 | #define __TP_TPDU__ | |
39 | ||
40 | #ifndef BYTE_ORDER | |
41 | /* | |
42 | * Definitions for byte order, | |
43 | * according to byte significance from low address to high. | |
44 | */ | |
45 | #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */ | |
46 | #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */ | |
47 | #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */ | |
48 | ||
49 | #ifdef vax | |
50 | #define BYTE_ORDER LITTLE_ENDIAN | |
51 | #else | |
52 | #define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */ | |
53 | #endif | |
54 | #endif BYTE_ORDER | |
55 | ||
56 | /* This much of a tpdu is the same for all types of tpdus (except | |
57 | * DT tpdus in class 0; their exceptions are handled by the data | |
58 | * structure below | |
59 | */ | |
60 | struct tpdu_fixed { | |
61 | unsigned _tpduf_li:8, /* length indicator */ | |
62 | #if BYTE_ORDER == LITTLE_ENDIAN | |
63 | _tpduf_cdt: 4, /* credit */ | |
64 | _tpduf_type: 4, /* type of tpdu (DT, CR, etc.) */ | |
65 | #endif | |
66 | #if BYTE_ORDER == BIG_ENDIAN | |
67 | _tpduf_type: 4, /* type of tpdu (DT, CR, etc.) */ | |
68 | _tpduf_cdt: 4, /* credit */ | |
69 | #endif | |
70 | _tpduf_dref: 16; /* destination ref; not in DT in class 0 */ | |
71 | }; | |
72 | ||
73 | #define tpdu_li _tpduf._tpduf_li | |
74 | #define tpdu_type _tpduf._tpduf_type | |
75 | #define tpdu_cdt _tpduf._tpduf_cdt | |
76 | #define tpdu_dref _tpduf._tpduf_dref | |
77 | ||
78 | struct tp0du { | |
79 | unsigned _tp0same:16, /* same as in tpdu_fixed */ | |
80 | #if BYTE_ORDER == BIG_ENDIAN | |
81 | _tp0_eot: 1, /* eot */ | |
82 | _tp0_mbz: 7, /* must be zero */ | |
83 | #endif | |
84 | #if BYTE_ORDER == LITTLE_ENDIAN | |
85 | _tp0_mbz: 7, /* must be zero */ | |
86 | _tp0_eot: 1, /* eot */ | |
87 | #endif | |
88 | _tp0_notused: 8; /* data begins on this octet */ | |
89 | }; | |
90 | ||
91 | #define tp0du_eot _tp0_eot | |
92 | #define tp0du_mbz _tp0_mbz | |
93 | ||
94 | /* | |
95 | * This is used when the extended format seqence numbers are | |
96 | * being sent and received. | |
97 | */ | |
98 | /* | |
99 | * the seqeot field is an int that overlays the seq | |
100 | * and eot fields, this allows the htonl operation | |
101 | * to be applied to the entire 32 bit quantity, and | |
102 | * simplifies the structure definitions. | |
103 | */ | |
104 | union seq_type { | |
105 | struct { | |
106 | #if BYTE_ORDER == BIG_ENDIAN | |
107 | unsigned int st_eot:1, /* end-of-tsdu */ | |
108 | st_seq:31; /* 31 bit sequence number */ | |
109 | #endif | |
110 | #if BYTE_ORDER == LITTLE_ENDIAN | |
111 | unsigned int st_seq:31, /* 31 bit sequence number */ | |
112 | st_eot:1; /* end-of-tsdu */ | |
113 | #endif | |
114 | } st; | |
115 | unsigned int s_seqeot; | |
116 | #define s_eot st.st_eot | |
117 | #define s_seq st.st_seq | |
118 | }; | |
119 | ||
120 | /* Then most tpdu types have a portion that is always present but | |
121 | * differs among the tpdu types : | |
122 | */ | |
123 | union tpdu_fixed_rest { | |
124 | ||
125 | struct { | |
126 | unsigned _tpdufr_sref:16, /* source reference */ | |
127 | #if BYTE_ORDER == BIG_ENDIAN | |
128 | _tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */ | |
129 | _tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */ | |
130 | #endif | |
131 | #if BYTE_ORDER == LITTLE_ENDIAN | |
132 | _tpdufr_opt: 4, /* options [ ISO 8073 13.3.3.e ] */ | |
133 | _tpdufr_class: 4, /* class [ ISO 8073 13.3.3.e ] */ | |
134 | #endif | |
135 | _tpdufr_xx: 8; /* unused */ | |
136 | } CRCC; | |
137 | ||
138 | #define tpdu_CRli _tpduf._tpduf_li | |
139 | #define tpdu_CRtype _tpduf._tpduf_type | |
140 | #define tpdu_CRcdt _tpduf._tpduf_cdt | |
141 | #define tpdu_CRdref_0 _tpduf._tpduf_dref | |
142 | #define tpdu_CRsref _tpdufr.CRCC._tpdufr_sref | |
143 | #define tpdu_sref _tpdufr.CRCC._tpdufr_sref | |
144 | #define tpdu_CRclass _tpdufr.CRCC._tpdufr_class | |
145 | #define tpdu_CRoptions _tpdufr.CRCC._tpdufr_opt | |
146 | ||
147 | #define tpdu_CCli _tpduf._tpduf_li | |
148 | #define tpdu_CCtype _tpduf._tpduf_type | |
149 | #define tpdu_CCcdt _tpduf._tpduf_cdt | |
150 | #define tpdu_CCdref _tpduf._tpduf_dref | |
151 | #define tpdu_CCsref _tpdufr.CRCC._tpdufr_sref | |
152 | #define tpdu_CCclass _tpdufr.CRCC._tpdufr_class | |
153 | #define tpdu_CCoptions _tpdufr.CRCC._tpdufr_opt | |
154 | ||
155 | /* OPTIONS and ADDL OPTIONS bits */ | |
156 | #define TPO_USE_EFC 0x1 | |
157 | #define TPO_XTD_FMT 0x2 | |
158 | #define TPAO_USE_TXPD 0x1 | |
159 | #define TPAO_NO_CSUM 0x2 | |
160 | #define TPAO_USE_RCC 0x4 | |
161 | #define TPAO_USE_NXPD 0x8 | |
162 | ||
163 | struct { | |
164 | unsigned short _tpdufr_sref; /* source reference */ | |
165 | unsigned char _tpdufr_reason; /* [ ISO 8073 13.5.3.d ] */ | |
166 | } DR; | |
167 | #define tpdu_DRli _tpduf._tpduf_li | |
168 | #define tpdu_DRtype _tpduf._tpduf_type | |
169 | #define tpdu_DRdref _tpduf._tpduf_dref | |
170 | #define tpdu_DRsref _tpdufr.DR._tpdufr_sref | |
171 | #define tpdu_DRreason _tpdufr.DR._tpdufr_reason | |
172 | ||
173 | unsigned short _tpdufr_sref; /* source reference */ | |
174 | ||
175 | #define tpdu_DCli _tpduf._tpduf_li | |
176 | #define tpdu_DCtype _tpduf._tpduf_type | |
177 | #define tpdu_DCdref _tpduf._tpduf_dref | |
178 | #define tpdu_DCsref _tpdufr._tpdufr_sref | |
179 | ||
180 | struct { | |
181 | #if BYTE_ORDER == BIG_ENDIAN | |
182 | unsigned char _tpdufr_eot:1, /* end-of-tsdu */ | |
183 | _tpdufr_seq:7; /* 7 bit sequence number */ | |
184 | #endif | |
185 | #if BYTE_ORDER == LITTLE_ENDIAN | |
186 | unsigned char _tpdufr_seq:7, /* 7 bit sequence number */ | |
187 | _tpdufr_eot:1; /* end-of-tsdu */ | |
188 | #endif | |
189 | }SEQEOT; | |
190 | struct { | |
191 | #if BYTE_ORDER == BIG_ENDIAN | |
192 | unsigned int _tpdufr_Xeot:1, /* end-of-tsdu */ | |
193 | _tpdufr_Xseq:31; /* 31 bit sequence number */ | |
194 | #endif | |
195 | #if BYTE_ORDER == LITTLE_ENDIAN | |
196 | unsigned int _tpdufr_Xseq:31, /* 31 bit sequence number */ | |
197 | _tpdufr_Xeot:1; /* end-of-tsdu */ | |
198 | #endif | |
199 | }SEQEOT31; | |
200 | unsigned int _tpdufr_Xseqeot; | |
201 | #define tpdu_seqeotX _tpdufr._tpdufr_Xseqeot | |
202 | ||
203 | #define tpdu_DTli _tpduf._tpduf_li | |
204 | #define tpdu_DTtype _tpduf._tpduf_type | |
205 | #define tpdu_DTdref _tpduf._tpduf_dref | |
206 | #define tpdu_DTseq _tpdufr.SEQEOT._tpdufr_seq | |
207 | #define tpdu_DTeot _tpdufr.SEQEOT._tpdufr_eot | |
208 | #define tpdu_DTseqX _tpdufr.SEQEOT31._tpdufr_Xseq | |
209 | #define tpdu_DTeotX _tpdufr.SEQEOT31._tpdufr_Xeot | |
210 | ||
211 | #define tpdu_XPDli _tpduf._tpduf_li | |
212 | #define tpdu_XPDtype _tpduf._tpduf_type | |
213 | #define tpdu_XPDdref _tpduf._tpduf_dref | |
214 | #define tpdu_XPDseq _tpdufr.SEQEOT._tpdufr_seq | |
215 | #define tpdu_XPDeot _tpdufr.SEQEOT._tpdufr_eot | |
216 | #define tpdu_XPDseqX _tpdufr.SEQEOT31._tpdufr_Xseq | |
217 | #define tpdu_XPDeotX _tpdufr.SEQEOT31._tpdufr_Xeot | |
218 | ||
219 | struct { | |
220 | #if BYTE_ORDER == BIG_ENDIAN | |
221 | unsigned _tpdufr_yrseq0:1, /* always zero */ | |
222 | _tpdufr_yrseq:31; /* [ ISO 8073 13.9.3.d ] */ | |
223 | #endif | |
224 | #if BYTE_ORDER == LITTLE_ENDIAN | |
225 | unsigned _tpdufr_yrseq:31, /* [ ISO 8073 13.9.3.d ] */ | |
226 | _tpdufr_yrseq0:1; /* always zero */ | |
227 | #endif | |
228 | unsigned short _tpdufr_cdt; /* [ ISO 8073 13.9.3.b ] */ | |
229 | } AK31; | |
230 | ||
231 | #define tpdu_AKli _tpduf._tpduf_li | |
232 | #define tpdu_AKtype _tpduf._tpduf_type | |
233 | #define tpdu_AKdref _tpduf._tpduf_dref | |
234 | #define tpdu_AKseq _tpdufr.SEQEOT._tpdufr_seq | |
235 | #define tpdu_AKseqX _tpdufr.AK31._tpdufr_yrseq | |
236 | /* location of cdt depends on size of seq. numbers */ | |
237 | #define tpdu_AKcdt _tpduf._tpduf_cdt | |
238 | #define tpdu_AKcdtX _tpdufr.AK31._tpdufr_cdt | |
239 | ||
240 | #define tpdu_XAKli _tpduf._tpduf_li | |
241 | #define tpdu_XAKtype _tpduf._tpduf_type | |
242 | #define tpdu_XAKdref _tpduf._tpduf_dref | |
243 | #define tpdu_XAKseq _tpdufr.SEQEOT._tpdufr_seq | |
244 | #define tpdu_XAKseqX _tpdufr.SEQEOT31._tpdufr_Xseq | |
245 | ||
246 | unsigned char _tpdu_ERreason; /* [ ISO 8073 13.12.3.c ] */ | |
247 | ||
248 | #define tpdu_ERli _tpduf._tpduf_li | |
249 | #define tpdu_ERtype _tpduf._tpduf_type | |
250 | #define tpdu_ERdref _tpduf._tpduf_dref | |
251 | #define tpdu_ERreason _tpdufr._tpdu_ERreason | |
252 | ||
253 | }; | |
254 | ||
255 | struct tpdu { | |
256 | struct tpdu_fixed _tpduf; | |
257 | union tpdu_fixed_rest _tpdufr; | |
258 | }; | |
259 | ||
260 | #endif __TP_TPDU__ |