summaryrefslogtreecommitdiffstats
path: root/contrib/tcpdump/sctpHeader.h
blob: b4a131a59a48be9ae9da7d60b1ca20d048cec41f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/* @(#) $Header: /tcpdump/master/tcpdump/sctpHeader.h,v 1.3 2001/08/01 03:34:00 guy Exp $ (LBL) */

/* SCTP reference Implementation Copyright (C) 1999 Cisco And Motorola
 *
 * 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.
 *
 * 4. Neither the name of Cisco nor of Motorola 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.
 *
 * This file is part of the SCTP reference Implementation
 *
 * 
 * Please send any bug reports or fixes you make to one of the following email
 * addresses:
 * 
 * rstewar1@email.mot.com
 * kmorneau@cisco.com
 * qxie1@email.mot.com
 * 
 * Any bugs reported given to us we will try to fix... any fixes shared will
 * be incorperated into the next SCTP release.
 */


#ifndef __sctpHeader_h__
#define __sctpHeader_h__

#include <sctpConstants.h>

#ifdef	__cplusplus
extern "C" {
#endif

/* the sctp common header */

#ifdef TRU64
 #define _64BITS 1
#endif 

struct sctpHeader{
  u_short source;
  u_short destination;
  u_int verificationTag;
  u_int adler32;
};

/* various descriptor parsers */

struct sctpChunkDesc{
  u_char chunkID;
  u_char chunkFlg;
  u_short chunkLength;
};

struct sctpParamDesc{
  u_short paramType;
  u_short paramLength;
};


struct sctpRelChunkDesc{
  struct sctpChunkDesc chk;
  u_int serialNumber;
};

struct sctpVendorSpecificParam {
  struct sctpParamDesc p;  /* type must be 0xfffe */
  u_int vendorId;	   /* vendor ID from RFC 1700 */
  u_short vendorSpecificType;
  u_short vendorSpecificLen;
};


/* Structures for the control parts */



/* Sctp association init request/ack */

/* this is used for init ack, too */
struct sctpInitiation{
  u_int initTag;		/* tag of mine */
  u_int rcvWindowCredit;	/* rwnd */
  u_short NumPreopenStreams;	/* OS */
  u_short MaxInboundStreams;     /* MIS */
  u_int initialTSN;
  /* optional param's follow in sctpParamDesc form */
};

struct sctpV4IpAddress{
  struct sctpParamDesc p;	/* type is set to SCTP_IPV4_PARAM_TYPE, len=10 */
  u_int  ipAddress;
};


struct sctpV6IpAddress{
  struct sctpParamDesc p;	/* type is set to SCTP_IPV6_PARAM_TYPE, len=22 */
  u_char  ipAddress[16];
};

struct sctpDNSName{
  struct sctpParamDesc param;
  u_char name[1];
};


struct sctpCookiePreserve{
  struct sctpParamDesc p;	/* type is set to SCTP_COOKIE_PRESERVE, len=8 */
  u_int extraTime;
};


struct sctpTimeStamp{
  u_int ts_sec;
  u_int ts_usec;
};

/* wire structure of my cookie */
struct cookieMessage{
  u_int TieTag_curTag;			/* copied from assoc if present */
  u_int TieTag_hisTag; 		/* copied from assoc if present */
  int cookieLife;			/* life I will award this cookie */
  struct sctpTimeStamp timeEnteringState; /* the time I built cookie */
  struct sctpInitiation initAckISent;	/* the INIT-ACK that I sent to my peer */
  u_int addressWhereISent[4];		/* I make this 4 ints so I get 128bits for future */
  int addrtype;				/* address type */
  u_short locScope;			/* V6 local scope flag */
  u_short siteScope;			/* V6 site scope flag */
  /* at the end is tacked on the INIT chunk sent in
   * its entirety and of course our 
   * signature.
   */
};


/* this guy is for use when
 * I have a initiate message gloming the
 * things together.

 */
struct sctpUnifiedInit{
  struct sctpChunkDesc uh;
  struct sctpInitiation initm;
};

struct sctpSendableInit{
  struct sctpHeader mh;
  struct sctpUnifiedInit msg;
};


/* Selective Acknowledgement 
 * has the following structure with
 * a optional ammount of trailing int's
 * on the last part (based on the numberOfDesc 
 * field).
 */

struct sctpSelectiveAck{
  u_int highestConseqTSN;
  u_int updatedRwnd;
  u_short numberOfdesc;
  u_short numDupTsns;
};

struct sctpSelectiveFrag{
  u_short fragmentStart;
  u_short fragmentEnd;
};


struct sctpUnifiedSack{
  struct sctpChunkDesc uh;
  struct sctpSelectiveAck sack;
};

/* for both RTT request/response the
 * following is sent 
 */

struct sctpHBrequest {
  u_int time_value_1;
  u_int time_value_2;
};

/* here is what I read and respond with to. */
struct sctpHBunified{
  struct sctpChunkDesc hdr;
  struct sctpParamDesc hb;
};


/* here is what I send */
struct sctpHBsender{
  struct sctpChunkDesc hdr;
  struct sctpParamDesc hb;
  struct sctpHBrequest rtt;
  char addrFmt[SCTP_ADDRMAX];
  unsigned short userreq;
};
  


/* for the abort and shutdown ACK 
 * we must carry the init tag in the common header. Just the
 * common header is all that is needed with a chunk descriptor.
 */
struct sctpUnifiedAbort{
  struct sctpChunkDesc uh;
};

struct sctpUnifiedAbortLight{
  struct sctpHeader mh;
  struct sctpChunkDesc uh;
};

struct sctpUnifiedAbortHeavy{
  struct sctpHeader mh;
  struct sctpChunkDesc uh;
  unsigned short causeCode;
  unsigned short causeLen;
};

/* For the graceful shutdown we must carry
 * the tag (in common header)  and the highest consequitive acking value
 */
struct sctpShutdown {
  u_int TSN_Seen;
};

struct sctpUnifiedShutdown{
  struct sctpChunkDesc uh;
  struct sctpShutdown shut;
};

/* in the unified message we add the trailing
 * stream id since it is the only message
 * that is defined as a operation error.
 */
struct sctpOpErrorCause{
  u_short cause;
  u_short causeLen;
};

struct sctpUnifiedOpError{
  struct sctpChunkDesc uh;
  struct sctpOpErrorCause c;
};

struct sctpUnifiedStreamError{
  struct sctpHeader mh;
  struct sctpChunkDesc uh;
  struct sctpOpErrorCause c;
  u_short strmNum;
  u_short reserved;
};

struct staleCookieMsg{
  struct sctpHeader mh;
  struct sctpChunkDesc uh;
  struct sctpOpErrorCause c;
  u_int moretime;
};

/* the following is used in all sends
 * where nothing is needed except the
 * chunk/type i.e. shutdownAck Abort */

struct sctpUnifiedSingleMsg{
  struct sctpHeader mh;
  struct sctpChunkDesc uh;
};

struct sctpDataPart{
  u_int TSN;
  u_short streamId;
  u_short sequence;
  u_int payloadtype;
};

struct sctpUnifiedDatagram{
  struct sctpChunkDesc uh;
  struct sctpDataPart dp;
};

struct sctpECN_echo{
  struct sctpChunkDesc uh;
  u_int Lowest_TSN;
};    


struct sctpCWR{
  struct sctpChunkDesc uh;
  u_int TSN_reduced_at;
};    

#ifdef	__cplusplus
}
#endif

#endif
OpenPOWER on IntegriCloud