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-modularized the decoding of intserv related parameters in rsvp_intserv_print()
[tcpdump] / print-rsvp.c
1 /*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that: (1) source code
4 * distributions retain the above copyright notice and this paragraph
5 * in its entirety, and (2) distributions including binary code include
6 * the above copyright notice and this paragraph in its entirety in
7 * the documentation or other materials provided with the distribution.
8 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11 * FOR A PARTICULAR PURPOSE.
12 *
13 * Original code by Hannes Gredler (hannes@juniper.net)
14 */
15
16 #ifndef lint
17 static const char rcsid[] =
18 "@(#) $Header: /tcpdump/master/tcpdump/print-rsvp.c,v 1.11 2002-12-12 15:58:33 hannes Exp $";
19 #endif
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include <tcpdump-stdinc.h>
26
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include "interface.h"
32 #include "extract.h"
33 #include "addrtoname.h"
34 #include "ethertype.h"
35
36 /*
37 * RFC 2205 common header
38 *
39 * 0 1 2 3
40 * +-------------+-------------+-------------+-------------+
41 * | Vers | Flags| Msg Type | RSVP Checksum |
42 * +-------------+-------------+-------------+-------------+
43 * | Send_TTL | (Reserved) | RSVP Length |
44 * +-------------+-------------+-------------+-------------+
45 *
46 */
47
48 struct rsvp_common_header {
49 u_int8_t version_flags;
50 u_int8_t msg_type;
51 u_int8_t checksum[2];
52 u_int8_t ttl;
53 u_int8_t reserved;
54 u_int8_t length[2];
55 };
56
57 /*
58 * RFC2205 object header
59 *
60 *
61 * 0 1 2 3
62 * +-------------+-------------+-------------+-------------+
63 * | Length (bytes) | Class-Num | C-Type |
64 * +-------------+-------------+-------------+-------------+
65 * | |
66 * // (Object contents) //
67 * | |
68 * +-------------+-------------+-------------+-------------+
69 */
70
71 struct rsvp_object_header {
72 u_int8_t length[2];
73 u_int8_t class_num;
74 u_int8_t ctype;
75 };
76
77 #define RSVP_VERSION 1
78 #define RSVP_EXTRACT_VERSION(x) (((x)&0xf0)>>4)
79
80 #define RSVP_MSGTYPE_PATH 1
81 #define RSVP_MSGTYPE_RESV 2
82 #define RSVP_MSGTYPE_PATHERR 3
83 #define RSVP_MSGTYPE_RESVERR 4
84 #define RSVP_MSGTYPE_PATHTEAR 5
85 #define RSVP_MSGTYPE_RESVTEAR 6
86 #define RSVP_MSGTYPE_RESVCONF 7
87 #define RSVP_MSGTYPE_AGGREGATE 12
88 #define RSVP_MSGTYPE_ACK 13
89 #define RSVP_MSGTYPE_HELLO_OLD 14 /* ancient Hellos */
90 #define RSVP_MSGTYPE_SREFRESH 15
91 #define RSVP_MSGTYPE_HELLO 20
92
93 static const struct tok rsvp_msg_type_values[] = {
94 { RSVP_MSGTYPE_PATH, "Path" },
95 { RSVP_MSGTYPE_RESV, "Resv" },
96 { RSVP_MSGTYPE_PATHERR, "PathErr" },
97 { RSVP_MSGTYPE_RESVERR, "ResvErr" },
98 { RSVP_MSGTYPE_PATHTEAR, "PathTear" },
99 { RSVP_MSGTYPE_RESVTEAR, "ResvTear" },
100 { RSVP_MSGTYPE_RESVCONF, "ResvConf" },
101 { RSVP_MSGTYPE_AGGREGATE, "Aggregate" },
102 { RSVP_MSGTYPE_ACK, "Acknowledgement" },
103 { RSVP_MSGTYPE_HELLO_OLD, "Hello (Old)" },
104 { RSVP_MSGTYPE_SREFRESH, "Refresh" },
105 { RSVP_MSGTYPE_HELLO, "Hello" },
106 { 0, NULL}
107 };
108
109 #define RSVP_OBJ_SESSION 1 /* rfc2205 */
110 #define RSVP_OBJ_RSVP_HOP 3 /* rfc2205 */
111 #define RSVP_OBJ_INTEGRITY 4
112 #define RSVP_OBJ_TIME_VALUES 5 /* rfc2205 */
113 #define RSVP_OBJ_ERROR_SPEC 6
114 #define RSVP_OBJ_SCOPE 7
115 #define RSVP_OBJ_STYLE 8 /* rfc2205 */
116 #define RSVP_OBJ_FLOWSPEC 9 /* rfc2215 */
117 #define RSVP_OBJ_FILTERSPEC 10 /* rfc2215 */
118 #define RSVP_OBJ_SENDER_TEMPLATE 11
119 #define RSVP_OBJ_SENDER_TSPEC 12 /* rfc2215 */
120 #define RSVP_OBJ_ADSPEC 13 /* rfc2215 */
121 #define RSVP_OBJ_POLICY_DATA 14
122 #define RSVP_OBJ_CONFIRM 15
123 #define RSVP_OBJ_LABEL 16 /* rfc3209 */
124 #define RSVP_OBJ_LABEL_REQ 19 /* rfc3209 */
125 #define RSVP_OBJ_ERO 20 /* rfc3209 */
126 #define RSVP_OBJ_RRO 21 /* rfc3209 */
127 #define RSVP_OBJ_HELLO 22 /* rfc3209 */
128 #define RSVP_OBJ_MESSAGE_ID 23
129 #define RSVP_OBJ_MESSAGE_ID_ACK 24
130 #define RSVP_OBJ_MESSAGE_ID_LIST 25
131 #define RSVP_OBJ_RECOVERY_LABEL 34
132 #define RSVP_OBJ_UPSTREAM_LABEL 35
133 #define RSVP_OBJ_DETOUR 63 /* draft-ietf-mpls-rsvp-lsp-fastreroute-01 */
134 #define RSVP_OBJ_SUGGESTED_LABEL 129
135 #define RSVP_OBJ_PROPERTIES 204
136 #define RSVP_OBJ_FASTREROUTE 205 /* draft-ietf-mpls-rsvp-lsp-fastreroute-01 */
137 #define RSVP_OBJ_SESSION_ATTRIBUTE 207 /* rfc3209 */
138 #define RSVP_OBJ_RESTART_CAPABILITY 131 /* draft-pan-rsvp-te-restart */
139
140 static const struct tok rsvp_obj_values[] = {
141 { RSVP_OBJ_SESSION, "Session" },
142 { RSVP_OBJ_RSVP_HOP, "RSVP Hop" },
143 { RSVP_OBJ_INTEGRITY, "Integrity" },
144 { RSVP_OBJ_TIME_VALUES, "Time Values" },
145 { RSVP_OBJ_ERROR_SPEC, "Error Spec" },
146 { RSVP_OBJ_SCOPE, "Scope" },
147 { RSVP_OBJ_STYLE, "Style" },
148 { RSVP_OBJ_FLOWSPEC, "Flowspec" },
149 { RSVP_OBJ_FILTERSPEC, "FilterSpec" },
150 { RSVP_OBJ_SENDER_TEMPLATE, "Sender Template" },
151 { RSVP_OBJ_SENDER_TSPEC, "Sender TSpec" },
152 { RSVP_OBJ_ADSPEC, "Adspec" },
153 { RSVP_OBJ_POLICY_DATA, "Policy Data" },
154 { RSVP_OBJ_CONFIRM, "Confirm" },
155 { RSVP_OBJ_LABEL, "Label" },
156 { RSVP_OBJ_LABEL_REQ, "Label Request" },
157 { RSVP_OBJ_ERO, "ERO" },
158 { RSVP_OBJ_RRO, "RRO" },
159 { RSVP_OBJ_HELLO, "Hello" },
160 { RSVP_OBJ_MESSAGE_ID, "Message ID" },
161 { RSVP_OBJ_MESSAGE_ID_ACK, "Message ID Ack" },
162 { RSVP_OBJ_MESSAGE_ID_LIST, "Message ID List" },
163 { RSVP_OBJ_RECOVERY_LABEL, "Recovery Label" },
164 { RSVP_OBJ_UPSTREAM_LABEL, "Upstream Label" },
165 { RSVP_OBJ_DETOUR, "Detour" },
166 { RSVP_OBJ_SUGGESTED_LABEL, "Suggested Label" },
167 { RSVP_OBJ_PROPERTIES, "Properties" },
168 { RSVP_OBJ_FASTREROUTE, "Fast Re-Route" },
169 { RSVP_OBJ_SESSION_ATTRIBUTE, "Session Attribute" },
170 { RSVP_OBJ_RESTART_CAPABILITY, "Restart Capability" },
171 { 0, NULL}
172 };
173
174 #define RSVP_CTYPE_IPV4 1
175 #define RSVP_CTYPE_IPV6 2
176 #define RSVP_CTYPE_TUNNEL_IPV4 7
177 #define RSVP_CTYPE_TUNNEL_IPV6 8
178 #define RSVP_CTYPE_1 1
179 #define RSVP_CTYPE_2 2
180 #define RSVP_CTYPE_3 3
181
182 /*
183 * the ctypes are not globally unique so for
184 * translating it to strings we build a table based
185 * on objects offsetted by the ctype
186 */
187
188 static const struct tok rsvp_ctype_values[] = {
189 { 256*RSVP_OBJ_RSVP_HOP+RSVP_CTYPE_IPV4, "IPv4" },
190 { 256*RSVP_OBJ_RSVP_HOP+RSVP_CTYPE_IPV6, "IPv6" },
191 { 256*RSVP_OBJ_TIME_VALUES+RSVP_CTYPE_1, "1" },
192 { 256*RSVP_OBJ_FLOWSPEC+RSVP_CTYPE_1, "obsolete" },
193 { 256*RSVP_OBJ_FLOWSPEC+RSVP_CTYPE_2, "IntServ" },
194 { 256*RSVP_OBJ_SENDER_TSPEC+RSVP_CTYPE_2, "IntServ" },
195 { 256*RSVP_OBJ_ADSPEC+RSVP_CTYPE_2, "IntServ" },
196 { 256*RSVP_OBJ_FILTERSPEC+RSVP_CTYPE_IPV4, "IPv4" },
197 { 256*RSVP_OBJ_FILTERSPEC+RSVP_CTYPE_IPV6, "IPv6" },
198 { 256*RSVP_OBJ_FILTERSPEC+RSVP_CTYPE_3, "IPv6 Flow-label" },
199 { 256*RSVP_OBJ_FILTERSPEC+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
200 { 256*RSVP_OBJ_SESSION+RSVP_CTYPE_IPV4, "IPv4" },
201 { 256*RSVP_OBJ_SESSION+RSVP_CTYPE_IPV6, "IPv6" },
202 { 256*RSVP_OBJ_SESSION+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
203 { 256*RSVP_OBJ_SENDER_TEMPLATE+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
204 { 256*RSVP_OBJ_STYLE+RSVP_CTYPE_1, "1" },
205 { 256*RSVP_OBJ_HELLO+RSVP_CTYPE_1, "Hello Request" },
206 { 256*RSVP_OBJ_HELLO+RSVP_CTYPE_2, "Hello Ack" },
207 { 256*RSVP_OBJ_LABEL_REQ+RSVP_CTYPE_1, "without label range" },
208 { 256*RSVP_OBJ_LABEL_REQ+RSVP_CTYPE_2, "with ATM label range" },
209 { 256*RSVP_OBJ_LABEL_REQ+RSVP_CTYPE_3, "with FR label range" },
210 { 256*RSVP_OBJ_LABEL+RSVP_CTYPE_1, "1" },
211 { 256*RSVP_OBJ_ERO+RSVP_CTYPE_IPV4, "IPv4" },
212 { 256*RSVP_OBJ_RRO+RSVP_CTYPE_IPV4, "IPv4" },
213 { 256*RSVP_OBJ_RESTART_CAPABILITY+RSVP_CTYPE_1, "IPv4" },
214 { 256*RSVP_OBJ_SESSION_ATTRIBUTE+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
215 { 256*RSVP_OBJ_FASTREROUTE+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
216 { 256*RSVP_OBJ_DETOUR+RSVP_CTYPE_TUNNEL_IPV4, "Tunnel IPv4" },
217 { 0, NULL}
218 };
219
220 #define RSVP_OBJ_XRO_MASK_SUBOBJ(x) ((x)&0x7f)
221 #define RSVP_OBJ_XRO_MASK_LOOSE(x) ((x)&0x80)
222
223 #define RSVP_OBJ_XRO_RES 0
224 #define RSVP_OBJ_XRO_IPV4 1
225 #define RSVP_OBJ_XRO_IPV6 2
226 #define RSVP_OBJ_XRO_ASN 32
227 #define RSVP_OBJ_XRO_MPLS 64
228
229 static const struct tok rsvp_obj_xro_values[] = {
230 { RSVP_OBJ_XRO_RES, "Reserved" },
231 { RSVP_OBJ_XRO_IPV4, "IPv4 prefix" },
232 { RSVP_OBJ_XRO_IPV6, "IPv6 prefix" },
233 { RSVP_OBJ_XRO_ASN, "Autonomous system number" },
234 { RSVP_OBJ_XRO_MPLS, "MPLS label switched path termination" },
235 { 0, NULL}
236 };
237
238 static const struct tok rsvp_resstyle_values[] = {
239 { 17, "Wildcard Filter" },
240 { 10, "Fixed Filter" },
241 { 18, "Shared Explicit" },
242 { 0, NULL}
243 };
244
245 #define RSVP_OBJ_INTSERV_GUARANTEED_SERV 2
246 #define RSVP_OBJ_INTSERV_CONTROLLED_LOAD 5
247
248 static const struct tok rsvp_intserv_service_type_values[] = {
249 { 1, "Default/Global Information" },
250 { RSVP_OBJ_INTSERV_CONTROLLED_LOAD, "Controlled Load" },
251 { RSVP_OBJ_INTSERV_GUARANTEED_SERV, "Guaranteed Service" },
252 { 0, NULL}
253 };
254
255 static const struct tok rsvp_intserv_parameter_id_values[] = {
256 { 4, "IS hop cnt" },
257 { 6, "Path b/w estimate" },
258 { 8, "Minimum path latency" },
259 { 10, "Composed MTU" },
260 { 127, "Token Bucket TSpec" },
261 { 130, "Guaranteed Service RSpec" },
262 { 0, NULL}
263 };
264
265 static struct tok rsvp_session_attribute_flag_values[] = {
266 { 1, "Local Protection desired" },
267 { 2, "Label Recording desired" },
268 { 4, "SE Style desired" },
269 { 0, NULL}
270 };
271
272 #define FALSE 0
273 #define TRUE 1
274
275
276 int rsvp_intserv_print(const u_char *);
277
278 /*
279 * this is a dissector for all the intserv defined
280 * specs as defined per rfc2215
281 * it is called from various rsvp objects;
282 * returns the amount of bytes being processed
283 */
284 int
285 rsvp_intserv_print(const u_char *tptr) {
286
287 int parameter_id,parameter_length;
288 union {
289 float f;
290 u_int32_t i;
291 } bw;
292
293 parameter_id = *(tptr);
294 parameter_length = EXTRACT_16BITS(tptr+2)<<2; /* convert wordcount to bytecount */
295
296 printf("\n\t Parameter ID: %s (%u), length: %u, Flags: [0x%02x]",
297 tok2str(rsvp_intserv_parameter_id_values,"unknown",parameter_id),
298 parameter_id,
299 parameter_length,
300 *(tptr+1));
301
302 switch(parameter_id) { /* parameter_id */
303
304 case 4:
305 /*
306 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
307 * | 4 (e) | (f) | 1 (g) |
308 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
309 * | IS hop cnt (32-bit unsigned integer) |
310 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
311 */
312 printf("\n\t\tIS hop cnt: %u", EXTRACT_32BITS(tptr+4));
313 break;
314
315 case 6:
316 /*
317 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
318 * | 6 (h) | (i) | 1 (j) |
319 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
320 * | Path b/w estimate (32-bit IEEE floating point number) |
321 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
322 */
323 bw.i = EXTRACT_32BITS(tptr+4);
324 printf("\n\t\tPath b/w estimate: %.10g Mbps", bw.f/125000);
325 break;
326
327 case 8:
328 /*
329 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
330 * | 8 (k) | (l) | 1 (m) |
331 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
332 * | Minimum path latency (32-bit integer) |
333 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
334 */
335 printf("\n\t\tMinimum path latency: ");
336 if (EXTRACT_32BITS(tptr+4) == 0xffffffff)
337 printf("don't care");
338 else
339 printf("%u", EXTRACT_32BITS(tptr+4));
340 break;
341
342 case 10:
343
344 /*
345 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
346 * | 10 (n) | (o) | 1 (p) |
347 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
348 * | Composed MTU (32-bit unsigned integer) |
349 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
350 */
351 printf("\n\t\tComposed MTU: %u bytes", EXTRACT_32BITS(tptr+4));
352 break;
353 case 127:
354 /*
355 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
356 * | 127 (e) | 0 (f) | 5 (g) |
357 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
358 * | Token Bucket Rate [r] (32-bit IEEE floating point number) |
359 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
360 * | Token Bucket Size [b] (32-bit IEEE floating point number) |
361 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
362 * | Peak Data Rate [p] (32-bit IEEE floating point number) |
363 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
364 * | Minimum Policed Unit [m] (32-bit integer) |
365 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
366 * | Maximum Packet Size [M] (32-bit integer) |
367 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
368 */
369
370 bw.i = EXTRACT_32BITS(tptr+4);
371 printf("\n\t\tToken Bucket Rate: %.10g Mbps", bw.f/125000);
372 bw.i = EXTRACT_32BITS(tptr+8);
373 printf("\n\t\tToken Bucket Size: %.10g bytes", bw.f);
374 bw.i = EXTRACT_32BITS(tptr+12);
375 printf("\n\t\tPeak Data Rate: %.10g Mbps", bw.f/125000);
376 printf("\n\t\tMinimum Policed Unit: %u bytes", EXTRACT_32BITS(tptr+16));
377 printf("\n\t\tMaximum Packet Size: %u bytes", EXTRACT_32BITS(tptr+20));
378 break;
379
380 case 130:
381 /*
382 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
383 * | 130 (h) | 0 (i) | 2 (j) |
384 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
385 * | Rate [R] (32-bit IEEE floating point number) |
386 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
387 * | Slack Term [S] (32-bit integer) |
388 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
389 */
390
391 bw.i = EXTRACT_32BITS(tptr+4);
392 printf("\n\t\tRate: %.10g Mbps", bw.f/125000);
393 printf("\n\t\tSlack Term: %u", EXTRACT_32BITS(tptr+8));
394 break;
395 /*
396 * FIXME those are the defined paramters that lack a decoder
397 * you are welcome to contribute code ;-)
398 */
399 case 133:
400 case 134:
401 case 135:
402 case 136:
403
404 default:
405 if (vflag <= 1)
406 print_unknown_data(tptr+4,"\n\t ",parameter_length);
407 }
408 return (parameter_length+4); /* header length 4 bytes */
409 }
410
411 void
412 rsvp_print(register const u_char *pptr, register u_int len) {
413
414 const struct rsvp_common_header *rsvp_com_header;
415 const struct rsvp_object_header *rsvp_obj_header;
416 const u_char *tptr,*obj_tptr;
417 u_short tlen,rsvp_obj_len,rsvp_obj_ctype,obj_tlen;
418 int hexdump,processed;
419 union {
420 float f;
421 u_int32_t i;
422 } bw;
423
424 tptr=pptr;
425 rsvp_com_header = (const struct rsvp_common_header *)pptr;
426 TCHECK(*rsvp_com_header);
427
428 /*
429 * Sanity checking of the header.
430 */
431 if (RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags) != RSVP_VERSION) {
432 printf("RSVP version %u packet not supported",
433 RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags));
434 return;
435 }
436
437 /* in non-verbose mode just lets print the basic Message Type*/
438 if (vflag < 1) {
439 printf("RSVP %s Message, length: %u",
440 tok2str(rsvp_msg_type_values, "unknown (%u)",rsvp_com_header->msg_type),
441 len);
442 return;
443 }
444
445 /* ok they seem to want to know everything - lets fully decode it */
446
447 tlen=EXTRACT_16BITS(rsvp_com_header->length);
448
449 printf("RSVP\n\tv: %u, msg-type: %s, length: %u, ttl: %u, checksum: 0x%04x",
450 RSVP_EXTRACT_VERSION(rsvp_com_header->version_flags),
451 tok2str(rsvp_msg_type_values, "unknown, type: %u",rsvp_com_header->msg_type),
452 tlen,
453 rsvp_com_header->ttl,
454 EXTRACT_16BITS(rsvp_com_header->checksum));
455
456 tptr+=sizeof(const struct rsvp_common_header);
457 tlen-=sizeof(const struct rsvp_common_header);
458
459 while(tlen>0) {
460 /* did we capture enough for fully decoding the object header ? */
461 if (!TTEST2(*tptr, sizeof(struct rsvp_object_header)))
462 goto trunc;
463
464 rsvp_obj_header = (const struct rsvp_object_header *)tptr;
465 rsvp_obj_len=EXTRACT_16BITS(rsvp_obj_header->length);
466 rsvp_obj_ctype=rsvp_obj_header->ctype;
467
468 if(rsvp_obj_len % 4 || rsvp_obj_len < 4)
469 return;
470
471 printf("\n\t %s Object (%u) Flags: [%s",
472 tok2str(rsvp_obj_values,
473 "Unknown",
474 rsvp_obj_header->class_num),
475 rsvp_obj_header->class_num,
476 ((rsvp_obj_header->class_num)&0x80) ? "ignore" : "reject");
477
478 if (rsvp_obj_header->class_num > 128)
479 printf(" %s",
480 ((rsvp_obj_header->class_num)&0x40) ? "and forward" : "silently");
481
482 printf(" if unknown], Class-Type: %s (%u), length: %u",
483 tok2str(rsvp_ctype_values,
484 "Unknown",
485 ((rsvp_obj_header->class_num)<<8)+rsvp_obj_ctype),
486 rsvp_obj_ctype,
487 rsvp_obj_len);
488
489 obj_tptr=tptr+sizeof(struct rsvp_object_header);
490 obj_tlen=rsvp_obj_len-sizeof(struct rsvp_object_header);
491
492 /* did we capture enough for fully decoding the object ? */
493 if (!TTEST2(*tptr, rsvp_obj_len))
494 goto trunc;
495 hexdump=FALSE;
496
497 switch(rsvp_obj_header->class_num) {
498 case RSVP_OBJ_SESSION:
499 switch(rsvp_obj_ctype) {
500 case RSVP_CTYPE_IPV4:
501 printf("\n\t IPv4 DestAddress: %s, Protocol ID: 0x%02x",
502 ipaddr_string(obj_tptr),
503 *(obj_tptr+4));
504 printf("\n\t Flags: [0x%02x], DestPort %u",
505 *(obj_tptr+5),
506 EXTRACT_16BITS(obj_tptr+6));
507 obj_tlen-=8;
508 obj_tptr+=8;
509 break;
510 #ifdef INET6
511 case RSVP_CTYPE_IPV6:
512 printf("\n\t IPv6 DestAddress: %s, Protocol ID: 0x%02x",
513 ip6addr_string(obj_tptr),
514 *(obj_tptr+16));
515 printf("\n\t Flags: [0x%02x], DestPort %u",
516 *(obj_tptr+17),
517 EXTRACT_16BITS(obj_tptr+18));
518 obj_tlen-=20;
519 obj_tptr+=20;
520 break;
521
522 case RSVP_CTYPE_TUNNEL_IPV6:
523 printf("\n\t IPv6 Tunnel EndPoint: %s, Tunnel ID: 0x%04x, Extended Tunnel ID: %s",
524 ip6addr_string(obj_tptr),
525 EXTRACT_16BITS(obj_tptr+18),
526 ip6addr_string(obj_tptr+20));
527 obj_tlen-=36;
528 obj_tptr+=36;
529 break;
530 #endif
531 case RSVP_CTYPE_TUNNEL_IPV4:
532 printf("\n\t IPv4 Tunnel EndPoint: %s, Tunnel ID: 0x%04x, Extended Tunnel ID: %s",
533 ipaddr_string(obj_tptr),
534 EXTRACT_16BITS(obj_tptr+6),
535 ipaddr_string(obj_tptr+8));
536 obj_tlen-=12;
537 obj_tptr+=12;
538 break;
539 default:
540 hexdump=TRUE;
541 }
542 break;
543
544 case RSVP_OBJ_LABEL:
545 switch(rsvp_obj_ctype) {
546 case RSVP_CTYPE_1:
547 while(obj_tlen >= 4 ) {
548 printf("\n\t Label: %u", EXTRACT_32BITS(obj_tptr));
549 obj_tlen-=4;
550 obj_tptr+=4;
551 }
552 break;
553 default:
554 hexdump=TRUE;
555 }
556 break;
557
558 case RSVP_OBJ_STYLE:
559 switch(rsvp_obj_ctype) {
560 case RSVP_CTYPE_1:
561 printf("\n\t Reservation Style: %s, Flags: [0x%02x]",
562 tok2str(rsvp_resstyle_values,
563 "Unknown",
564 EXTRACT_24BITS(obj_tptr+1)),
565 *(obj_tptr));
566 obj_tlen-=4;
567 obj_tptr+=4;
568 break;
569 default:
570 hexdump=TRUE;
571 }
572 break;
573
574 case RSVP_OBJ_SENDER_TEMPLATE:
575 switch(rsvp_obj_ctype) {
576 case RSVP_CTYPE_TUNNEL_IPV4:
577 printf("\n\t IPv4 Tunnel Sender Address: %s, LSP-ID: 0x%04x",
578 ipaddr_string(obj_tptr),
579 EXTRACT_16BITS(obj_tptr+6));
580 obj_tlen-=8;
581 obj_tptr+=8;
582 break;
583 default:
584 hexdump=TRUE;
585 }
586 break;
587
588 case RSVP_OBJ_LABEL_REQ:
589 switch(rsvp_obj_ctype) {
590 case RSVP_CTYPE_1:
591 while(obj_tlen >= 4 ) {
592 printf("\n\t L3 Protocol ID: %s",
593 tok2str(ethertype_values,
594 "Unknown Protocol 0x%04x",
595 EXTRACT_16BITS(obj_tptr+2)));
596 obj_tlen-=4;
597 obj_tptr+=4;
598 }
599 break;
600 case RSVP_CTYPE_2:
601 printf("\n\t L3 Protocol ID: %s",
602 tok2str(ethertype_values,
603 "Unknown Protocol 0x%04x",
604 EXTRACT_16BITS(obj_tptr+2)));
605 printf(",%s merge capability",((*(obj_tptr+4))&0x80) ? "no" : "" );
606 printf("\n\t Minimum VPI/VCI %u/%u",
607 (EXTRACT_16BITS(obj_tptr+4))&0xfff,
608 (EXTRACT_16BITS(obj_tptr+6))&0xfff);
609 printf("\n\t Maximum VPI/VCI %u/%u",
610 (EXTRACT_16BITS(obj_tptr+8))&0xfff,
611 (EXTRACT_16BITS(obj_tptr+10))&0xfff);
612 obj_tlen-=12;
613 obj_tptr+=12;
614 break;
615 case RSVP_CTYPE_3:
616 printf("\n\t L3 Protocol ID: %s",
617 tok2str(ethertype_values,
618 "Unknown Protocol 0x%04x",
619 EXTRACT_16BITS(obj_tptr+2)));
620 printf("\n\t Minimum/Maximum DLCI %u/%u, %s%s bit DLCI",
621 (EXTRACT_32BITS(obj_tptr+4))&0x7fffff,
622 (EXTRACT_32BITS(obj_tptr+8))&0x7fffff,
623 (((EXTRACT_16BITS(obj_tptr+4)>>7)&3) == 0 ) ? "10" : "",
624 (((EXTRACT_16BITS(obj_tptr+4)>>7)&3) == 2 ) ? "23" : "");
625 obj_tlen-=12;
626 obj_tptr+=12;
627 break;
628 default:
629 hexdump=TRUE;
630 }
631 break;
632
633 case RSVP_OBJ_RRO:
634 case RSVP_OBJ_ERO:
635 switch(rsvp_obj_ctype) {
636 case RSVP_CTYPE_IPV4:
637 while(obj_tlen >= 4 ) {
638 printf("\n\t Subobject Type: %s",
639 tok2str(rsvp_obj_xro_values,
640 "Unknown %u",
641 RSVP_OBJ_XRO_MASK_SUBOBJ(*obj_tptr)));
642 switch(RSVP_OBJ_XRO_MASK_SUBOBJ(*obj_tptr)) {
643 case RSVP_OBJ_XRO_IPV4:
644 printf(", %s, %s/%u",
645 RSVP_OBJ_XRO_MASK_LOOSE(*obj_tptr) ? "Loose" : "Strict",
646 ipaddr_string(obj_tptr+2),
647 *(obj_tptr+6));
648 }
649 obj_tlen-=*(obj_tptr+1);
650 obj_tptr+=*(obj_tptr+1);
651 }
652 break;
653 default:
654 hexdump=TRUE;
655 }
656 break;
657
658 case RSVP_OBJ_HELLO:
659 switch(rsvp_obj_ctype) {
660 case RSVP_CTYPE_1:
661 case RSVP_CTYPE_2:
662 printf("\n\t Source Instance 0x%08x, Destination Instance 0x%08x",
663 EXTRACT_32BITS(obj_tptr),
664 EXTRACT_32BITS(obj_tptr+4));
665 obj_tlen-=8;
666 obj_tptr+=8;
667 break;
668 default:
669 hexdump=TRUE;
670 }
671 break;
672
673 case RSVP_OBJ_RESTART_CAPABILITY:
674 switch(rsvp_obj_ctype) {
675 case RSVP_CTYPE_1:
676 printf("\n\t Restart Time: %ums\n\t Recovery Time: %ums",
677 EXTRACT_16BITS(obj_tptr),
678 EXTRACT_16BITS(obj_tptr+4));
679 break;
680 default:
681 hexdump=TRUE;
682 }
683 break;
684
685 case RSVP_OBJ_SESSION_ATTRIBUTE:
686 switch(rsvp_obj_ctype) {
687 case RSVP_CTYPE_TUNNEL_IPV4:
688 printf("\n\t Session Name: %s",(obj_tptr+3));
689 printf("\n\t Setup Priority: %u, Holding Priority: %u, Flags: [%s]",
690 (int)*obj_tptr,
691 (int)*(obj_tptr+1),
692 tok2str(rsvp_session_attribute_flag_values,
693 "none",
694 *(obj_tptr+2)));
695
696 obj_tlen-=4+*(obj_tptr+3);
697 obj_tptr+=4+*(obj_tptr+3);
698 break;
699 default:
700 hexdump=TRUE;
701 }
702 break;
703
704 case RSVP_OBJ_RSVP_HOP:
705 switch(rsvp_obj_ctype) {
706 case RSVP_CTYPE_IPV4:
707 printf("\n\t Previous/Next Interface: %s, Logical Interface Handle: 0x%08x",
708 ipaddr_string(obj_tptr),
709 EXTRACT_32BITS(obj_tptr+4));
710 obj_tlen-=8;
711 obj_tptr+=8;
712 break;
713 #ifdef INET6
714 case RSVP_CTYPE_IPV6:
715 printf("\n\t Previous/Next Interface: %s, Logical Interface Handle: 0x%08x",
716 ip6addr_string(obj_tptr),
717 EXTRACT_32BITS(obj_tptr+16));
718 obj_tlen-=20;
719 obj_tptr+=20;
720 break;
721 #endif
722 default:
723 hexdump=TRUE;
724 }
725 break;
726
727 case RSVP_OBJ_TIME_VALUES:
728 switch(rsvp_obj_ctype) {
729 case RSVP_CTYPE_1:
730 printf("\n\t Refresh Period: %ums",
731 EXTRACT_32BITS(obj_tptr));
732 obj_tlen-=4;
733 obj_tptr+=4;
734 break;
735 default:
736 hexdump=TRUE;
737 }
738 break;
739
740 /* those three objects do share the same semantics */
741 case RSVP_OBJ_SENDER_TSPEC:
742 case RSVP_OBJ_ADSPEC:
743 case RSVP_OBJ_FLOWSPEC:
744 switch(rsvp_obj_ctype) {
745 case RSVP_CTYPE_2:
746 printf("\n\t Msg-Version: %u, length: %u\n\t Service Type: %s (%u), Service length: %u",
747 (*obj_tptr & 0xf0) >> 4,
748 EXTRACT_16BITS(obj_tptr+2)<<2,
749 tok2str(rsvp_intserv_service_type_values,"unknown",*(obj_tptr+4)),
750 *(obj_tptr+4),
751 EXTRACT_16BITS(obj_tptr+6)<<2);
752
753 obj_tlen-=8; /* get to the start of the parameter list */
754 obj_tptr+=8;
755
756 while (obj_tlen>4) {
757 processed = rsvp_intserv_print(obj_tptr);
758 if (processed == 0)
759 break;
760 obj_tlen-=processed;
761 obj_tptr+=processed;
762 }
763 break;
764 default:
765 hexdump=TRUE;
766 }
767 break;
768
769 case RSVP_OBJ_FILTERSPEC:
770 switch(rsvp_obj_ctype) {
771 case RSVP_CTYPE_IPV4:
772 printf("\n\t Source Address: %s, Source Port: %u",
773 ipaddr_string(obj_tptr),
774 EXTRACT_16BITS(obj_tptr+6));
775 obj_tlen-=8;
776 obj_tptr+=8;
777 break;
778 #ifdef INET6
779 case RSVP_CTYPE_IPV6:
780 printf("\n\t Source Address: %s, Source Port: %u",
781 ip6addr_string(obj_tptr),
782 EXTRACT_16BITS(obj_tptr+18));
783 obj_tlen-=20;
784 obj_tptr+=20;
785 break;
786 case RSVP_CTYPE_3:
787 printf("\n\t Source Address: %s, Flow Label: %u",
788 ip6addr_string(obj_tptr),
789 EXTRACT_24BITS(obj_tptr+17));
790 obj_tlen-=20;
791 obj_tptr+=20;
792 break;
793 case RSVP_CTYPE_TUNNEL_IPV6:
794 printf("\n\t Source Address: %s, LSP-ID: 0x%04x",
795 ipaddr_string(obj_tptr),
796 EXTRACT_16BITS(obj_tptr+18));
797 obj_tlen-=20;
798 obj_tptr+=20;
799 break;
800 #endif
801 case RSVP_CTYPE_TUNNEL_IPV4:
802 printf("\n\t Source Address: %s, LSP-ID: 0x%04x",
803 ipaddr_string(obj_tptr),
804 EXTRACT_16BITS(obj_tptr+6));
805 obj_tlen-=8;
806 obj_tptr+=8;
807 break;
808 default:
809 hexdump=TRUE;
810 }
811 break;
812
813 case RSVP_OBJ_FASTREROUTE:
814 switch(rsvp_obj_ctype) {
815 case RSVP_CTYPE_TUNNEL_IPV4:
816 bw.i = EXTRACT_32BITS(obj_tptr+4);
817 printf("\n\t Setup Priority: %u, Holding Priority: %u, Hop-limit: %u, Bandwidth: %.10g Mbps",
818 (int)*obj_tptr,
819 (int)*(obj_tptr+1),
820 (int)*(obj_tptr+2),
821 bw.f*8/1000000);
822 printf("\n\t Include Colors: 0x%08x, Exclude Colors: 0x%08x",
823 EXTRACT_32BITS(obj_tptr+8),
824 EXTRACT_32BITS(obj_tptr+12));
825 obj_tlen-=16;
826 obj_tptr+=16;
827 break;
828 default:
829 hexdump=TRUE;
830 }
831 break;
832
833 case RSVP_OBJ_DETOUR:
834 switch(rsvp_obj_ctype) {
835 case RSVP_CTYPE_TUNNEL_IPV4:
836 while(obj_tlen >= 8) {
837 printf("\n\t PLR-ID: %s, Avoid-Node-ID: %s",
838 ipaddr_string(obj_tptr),
839 ipaddr_string(obj_tptr+4));
840 obj_tlen-=8;
841 obj_tptr+=8;
842 }
843 break;
844 default:
845 hexdump=TRUE;
846 }
847 break;
848
849 /*
850 * FIXME those are the defined objects that lack a decoder
851 * you are welcome to contribute code ;-)
852 */
853
854 case RSVP_OBJ_INTEGRITY:
855 case RSVP_OBJ_ERROR_SPEC:
856 case RSVP_OBJ_SCOPE:
857 case RSVP_OBJ_POLICY_DATA:
858 case RSVP_OBJ_CONFIRM:
859 case RSVP_OBJ_MESSAGE_ID:
860 case RSVP_OBJ_MESSAGE_ID_ACK:
861 case RSVP_OBJ_MESSAGE_ID_LIST:
862 case RSVP_OBJ_RECOVERY_LABEL:
863 case RSVP_OBJ_UPSTREAM_LABEL:
864 case RSVP_OBJ_SUGGESTED_LABEL:
865 case RSVP_OBJ_PROPERTIES:
866 default:
867 if (vflag <= 1)
868 print_unknown_data(obj_tptr,"\n\t ",obj_tlen);
869 break;
870 }
871 /* do we want to see an additionally hexdump ? */
872 if (vflag > 1 || hexdump==TRUE)
873 print_unknown_data(tptr+sizeof(sizeof(struct rsvp_object_header)),"\n\t ",
874 rsvp_obj_len-sizeof(struct rsvp_object_header));
875
876 tptr+=rsvp_obj_len;
877 tlen-=rsvp_obj_len;
878 }
879 return;
880 trunc:
881 printf("\n\t\t packet exceeded snapshot");
882 }
883
[mirror] the TCPdump network dissector