1 /*
2 * Copyright (c) 1998-2007 The TCPDUMP project
3 * Copyright (c) 2009 Florian Forster
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code
7 * distributions retain the above copyright notice and this paragraph
8 * in its entirety, and (2) distributions including binary code include
9 * the above copyright notice and this paragraph in its entirety in
10 * the documentation or other materials provided with the distribution.
11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
12 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
13 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
14 * FOR A PARTICULAR PURPOSE.
15 *
16 * Optimized Link State Protocl (OLSR) as per rfc3626
17 *
18 * Original code by Hannes Gredler <hannes@juniper.net>
19 * IPv6 additions by Florian Forster <octo at verplant.org>
20 */
21
22 #define NETDISSECT_REWORKED
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include <tcpdump-stdinc.h>
28
29 #include "interface.h"
30 #include "addrtoname.h"
31 #include "extract.h"
32
33 /*
34 * RFC 3626 common header
35 *
36 * 0 1 2 3
37 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
38 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
39 * | Packet Length | Packet Sequence Number |
40 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
41 * | Message Type | Vtime | Message Size |
42 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
43 * | Originator Address |
44 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
45 * | Time To Live | Hop Count | Message Sequence Number |
46 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
47 * | |
48 * : MESSAGE :
49 * | |
50 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
51 * | Message Type | Vtime | Message Size |
52 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
53 * | Originator Address |
54 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
55 * | Time To Live | Hop Count | Message Sequence Number |
56 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
57 * | |
58 * : MESSAGE :
59 * | |
60 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
61 * : :
62 */
63
64 struct olsr_common {
65 uint8_t packet_len[2];
66 uint8_t packet_seq[2];
67 };
68
69 #define OLSR_HELLO_MSG 1 /* rfc3626 */
70 #define OLSR_TC_MSG 2 /* rfc3626 */
71 #define OLSR_MID_MSG 3 /* rfc3626 */
72 #define OLSR_HNA_MSG 4 /* rfc3626 */
73 #define OLSR_POWERINFO_MSG 128
74 #define OLSR_NAMESERVICE_MSG 130
75 #define OLSR_HELLO_LQ_MSG 201 /* LQ extensions olsr.org */
76 #define OLSR_TC_LQ_MSG 202 /* LQ extensions olsr.org */
77
78 static const struct tok olsr_msg_values[] = {
79 { OLSR_HELLO_MSG, "Hello" },
80 { OLSR_TC_MSG, "TC" },
81 { OLSR_MID_MSG, "MID" },
82 { OLSR_HNA_MSG, "HNA" },
83 { OLSR_POWERINFO_MSG, "Powerinfo" },
84 { OLSR_NAMESERVICE_MSG, "Nameservice" },
85 { OLSR_HELLO_LQ_MSG, "Hello-LQ" },
86 { OLSR_TC_LQ_MSG, "TC-LQ" },
87 { 0, NULL}
88 };
89
90 struct olsr_msg4 {
91 uint8_t msg_type;
92 uint8_t vtime;
93 uint8_t msg_len[2];
94 uint8_t originator[4];
95 uint8_t ttl;
96 uint8_t hopcount;
97 uint8_t msg_seq[2];
98 };
99
100 struct olsr_msg6 {
101 uint8_t msg_type;
102 uint8_t vtime;
103 uint8_t msg_len[2];
104 uint8_t originator[16];
105 uint8_t ttl;
106 uint8_t hopcount;
107 uint8_t msg_seq[2];
108 };
109
110 struct olsr_hello {
111 uint8_t res[2];
112 uint8_t htime;
113 uint8_t will;
114 };
115
116 struct olsr_hello_link {
117 uint8_t link_code;
118 uint8_t res;
119 uint8_t len[2];
120 };
121
122 struct olsr_tc {
123 uint8_t ans_seq[2];
124 uint8_t res[2];
125 };
126
127 struct olsr_hna4 {
128 uint8_t network[4];
129 uint8_t mask[4];
130 };
131
132 struct olsr_hna6 {
133 uint8_t network[16];
134 uint8_t mask[16];
135 };
136
137
138 #define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
139 #define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
140
141 static const struct tok olsr_link_type_values[] = {
142 { 0, "Unspecified" },
143 { 1, "Asymmetric" },
144 { 2, "Symmetric" },
145 { 3, "Lost" },
146 { 0, NULL}
147 };
148
149 static const struct tok olsr_neighbor_type_values[] = {
150 { 0, "Not-Neighbor" },
151 { 1, "Symmetric" },
152 { 2, "Symmetric-MPR" },
153 { 0, NULL}
154 };
155
156 struct olsr_lq_neighbor4 {
157 uint8_t neighbor[4];
158 uint8_t link_quality;
159 uint8_t neighbor_link_quality;
160 uint8_t res[2];
161 };
162
163 struct olsr_lq_neighbor6 {
164 uint8_t neighbor[16];
165 uint8_t link_quality;
166 uint8_t neighbor_link_quality;
167 uint8_t res[2];
168 };
169
170 /*
171 * macro to convert the 8-bit mantissa/exponent to a double float
172 * taken from olsr.org.
173 */
174 #define VTIME_SCALE_FACTOR 0.0625
175 #define ME_TO_DOUBLE(me) \
176 (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
177
178 /*
179 * print a neighbor list with LQ extensions.
180 */
181 static int
olsr_print_lq_neighbor4(netdissect_options * ndo,const u_char * msg_data,u_int hello_len)182 olsr_print_lq_neighbor4(netdissect_options *ndo,
183 const u_char *msg_data, u_int hello_len)
184 {
185 struct olsr_lq_neighbor4 *lq_neighbor;
186
187 while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
188
189 lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data;
190 if (!ND_TTEST(*lq_neighbor))
191 return (-1);
192
193 ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2lf%%"
194 ", neighbor-link-quality %.2lf%%",
195 ipaddr_string(ndo, lq_neighbor->neighbor),
196 ((double)lq_neighbor->link_quality/2.55),
197 ((double)lq_neighbor->neighbor_link_quality/2.55)));
198
199 msg_data += sizeof(struct olsr_lq_neighbor4);
200 hello_len -= sizeof(struct olsr_lq_neighbor4);
201 }
202 return (0);
203 }
204
205 #if INET6
206 static int
olsr_print_lq_neighbor6(netdissect_options * ndo,const u_char * msg_data,u_int hello_len)207 olsr_print_lq_neighbor6(netdissect_options *ndo,
208 const u_char *msg_data, u_int hello_len)
209 {
210 struct olsr_lq_neighbor6 *lq_neighbor;
211
212 while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
213
214 lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data;
215 if (!ND_TTEST(*lq_neighbor))
216 return (-1);
217
218 ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2lf%%"
219 ", neighbor-link-quality %.2lf%%",
220 ip6addr_string(ndo, lq_neighbor->neighbor),
221 ((double)lq_neighbor->link_quality/2.55),
222 ((double)lq_neighbor->neighbor_link_quality/2.55)));
223
224 msg_data += sizeof(struct olsr_lq_neighbor6);
225 hello_len -= sizeof(struct olsr_lq_neighbor6);
226 }
227 return (0);
228 }
229 #endif /* INET6 */
230
231 /*
232 * print a neighbor list.
233 */
234 static int
olsr_print_neighbor(netdissect_options * ndo,const u_char * msg_data,u_int hello_len)235 olsr_print_neighbor(netdissect_options *ndo,
236 const u_char *msg_data, u_int hello_len)
237 {
238 int neighbor;
239
240 ND_PRINT((ndo, "\n\t neighbor\n\t\t"));
241 neighbor = 1;
242
243 while (hello_len >= sizeof(struct in_addr)) {
244
245 if (!ND_TTEST2(*msg_data, sizeof(struct in_addr)))
246 return (-1);
247 /* print 4 neighbors per line */
248
249 ND_PRINT((ndo, "%s%s", ipaddr_string(ndo, msg_data),
250 neighbor % 4 == 0 ? "\n\t\t" : " "));
251
252 msg_data += sizeof(struct in_addr);
253 hello_len -= sizeof(struct in_addr);
254 }
255 return (0);
256 }
257
258
259 void
olsr_print(netdissect_options * ndo,const u_char * pptr,u_int length,int is_ipv6)260 olsr_print(netdissect_options *ndo,
261 const u_char *pptr, u_int length, int is_ipv6)
262 {
263 union {
264 const struct olsr_common *common;
265 const struct olsr_msg4 *msg4;
266 const struct olsr_msg6 *msg6;
267 const struct olsr_hello *hello;
268 const struct olsr_hello_link *hello_link;
269 const struct olsr_tc *tc;
270 const struct olsr_hna4 *hna;
271 } ptr;
272
273 u_int msg_type, msg_len, msg_tlen, hello_len;
274 uint16_t name_entry_type, name_entry_len;
275 u_int name_entry_padding;
276 uint8_t link_type, neighbor_type;
277 const u_char *tptr, *msg_data;
278
279 tptr = pptr;
280
281 if (length < sizeof(struct olsr_common)) {
282 goto trunc;
283 }
284
285 ND_TCHECK2(*tptr, sizeof(struct olsr_common));
286
287 ptr.common = (struct olsr_common *)tptr;
288 length = min(length, EXTRACT_16BITS(ptr.common->packet_len));
289
290 ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u",
291 (is_ipv6 == 0) ? 4 : 6,
292 EXTRACT_16BITS(ptr.common->packet_seq),
293 length));
294
295 tptr += sizeof(struct olsr_common);
296
297 /*
298 * In non-verbose mode, just print version.
299 */
300 if (ndo->ndo_vflag < 1) {
301 return;
302 }
303
304 while (tptr < (pptr+length)) {
305 union
306 {
307 struct olsr_msg4 *v4;
308 struct olsr_msg6 *v6;
309 } msgptr;
310 int msg_len_valid = 0;
311
312 ND_TCHECK2(*tptr, sizeof(struct olsr_msg4));
313
314 #if INET6
315 if (is_ipv6)
316 {
317 msgptr.v6 = (struct olsr_msg6 *) tptr;
318 msg_type = msgptr.v6->msg_type;
319 msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
320 if ((msg_len >= sizeof (struct olsr_msg6))
321 && (msg_len <= length))
322 msg_len_valid = 1;
323
324 /* infinite loop check */
325 if (msg_type == 0 || msg_len == 0) {
326 return;
327 }
328
329 ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
330 "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s",
331 tok2str(olsr_msg_values, "Unknown", msg_type),
332 msg_type, ip6addr_string(ndo, msgptr.v6->originator),
333 msgptr.v6->ttl,
334 msgptr.v6->hopcount,
335 ME_TO_DOUBLE(msgptr.v6->vtime),
336 EXTRACT_16BITS(msgptr.v6->msg_seq),
337 msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
338 if (!msg_len_valid) {
339 return;
340 }
341
342 msg_tlen = msg_len - sizeof(struct olsr_msg6);
343 msg_data = tptr + sizeof(struct olsr_msg6);
344 }
345 else /* (!is_ipv6) */
346 #endif /* INET6 */
347 {
348 msgptr.v4 = (struct olsr_msg4 *) tptr;
349 msg_type = msgptr.v4->msg_type;
350 msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
351 if ((msg_len >= sizeof (struct olsr_msg4))
352 && (msg_len <= length))
353 msg_len_valid = 1;
354
355 /* infinite loop check */
356 if (msg_type == 0 || msg_len == 0) {
357 return;
358 }
359
360 ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
361 "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s",
362 tok2str(olsr_msg_values, "Unknown", msg_type),
363 msg_type, ipaddr_string(ndo, msgptr.v4->originator),
364 msgptr.v4->ttl,
365 msgptr.v4->hopcount,
366 ME_TO_DOUBLE(msgptr.v4->vtime),
367 EXTRACT_16BITS(msgptr.v4->msg_seq),
368 msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
369 if (!msg_len_valid) {
370 return;
371 }
372
373 msg_tlen = msg_len - sizeof(struct olsr_msg4);
374 msg_data = tptr + sizeof(struct olsr_msg4);
375 }
376
377 switch (msg_type) {
378 case OLSR_HELLO_MSG:
379 case OLSR_HELLO_LQ_MSG:
380 if (msg_tlen < sizeof(struct olsr_hello))
381 goto trunc;
382 ND_TCHECK2(*msg_data, sizeof(struct olsr_hello));
383
384 ptr.hello = (struct olsr_hello *)msg_data;
385 ND_PRINT((ndo, "\n\t hello-time %.3lfs, MPR willingness %u",
386 ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will));
387 msg_data += sizeof(struct olsr_hello);
388 msg_tlen -= sizeof(struct olsr_hello);
389
390 while (msg_tlen >= sizeof(struct olsr_hello_link)) {
391 int hello_len_valid = 0;
392
393 /*
394 * link-type.
395 */
396 ND_TCHECK2(*msg_data, sizeof(struct olsr_hello_link));
397
398 ptr.hello_link = (struct olsr_hello_link *)msg_data;
399
400 hello_len = EXTRACT_16BITS(ptr.hello_link->len);
401 link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
402 neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
403
404 if ((hello_len <= msg_tlen)
405 && (hello_len >= sizeof(struct olsr_hello_link)))
406 hello_len_valid = 1;
407
408 ND_PRINT((ndo, "\n\t link-type %s, neighbor-type %s, len %u%s",
409 tok2str(olsr_link_type_values, "Unknown", link_type),
410 tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
411 hello_len,
412 (hello_len_valid == 0) ? " (invalid)" : ""));
413
414 if (hello_len_valid == 0)
415 break;
416
417 msg_data += sizeof(struct olsr_hello_link);
418 msg_tlen -= sizeof(struct olsr_hello_link);
419 hello_len -= sizeof(struct olsr_hello_link);
420
421 ND_TCHECK2(*msg_data, hello_len);
422 if (msg_type == OLSR_HELLO_MSG) {
423 if (olsr_print_neighbor(ndo, msg_data, hello_len) == -1)
424 goto trunc;
425 } else {
426 #if INET6
427 if (is_ipv6) {
428 if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1)
429 goto trunc;
430 } else
431 #endif
432 {
433 if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1)
434 goto trunc;
435 }
436 }
437
438 msg_data += hello_len;
439 msg_tlen -= hello_len;
440 }
441 break;
442
443 case OLSR_TC_MSG:
444 case OLSR_TC_LQ_MSG:
445 if (msg_tlen < sizeof(struct olsr_tc))
446 goto trunc;
447 ND_TCHECK2(*msg_data, sizeof(struct olsr_tc));
448
449 ptr.tc = (struct olsr_tc *)msg_data;
450 ND_PRINT((ndo, "\n\t advertised neighbor seq 0x%04x",
451 EXTRACT_16BITS(ptr.tc->ans_seq)));
452 msg_data += sizeof(struct olsr_tc);
453 msg_tlen -= sizeof(struct olsr_tc);
454
455 if (msg_type == OLSR_TC_MSG) {
456 if (olsr_print_neighbor(ndo, msg_data, msg_tlen) == -1)
457 goto trunc;
458 } else {
459 #if INET6
460 if (is_ipv6) {
461 if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1)
462 goto trunc;
463 } else
464 #endif
465 {
466 if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1)
467 goto trunc;
468 }
469 }
470 break;
471
472 case OLSR_MID_MSG:
473 {
474 size_t addr_size = sizeof(struct in_addr);
475
476 #if INET6
477 if (is_ipv6)
478 addr_size = sizeof(struct in6_addr);
479 #endif
480
481 while (msg_tlen >= addr_size) {
482 ND_TCHECK2(*msg_data, addr_size);
483 #if INET6
484 ND_PRINT((ndo, "\n\t interface address %s",
485 is_ipv6 ? ip6addr_string(ndo, msg_data) :
486 ipaddr_string(ndo, msg_data)));
487 #else
488 ND_PRINT((ndo, "\n\t interface address %s",
489 ipaddr_string(ndo, msg_data)));
490 #endif
491
492 msg_data += addr_size;
493 msg_tlen -= addr_size;
494 }
495 break;
496 }
497
498 case OLSR_HNA_MSG:
499 ND_PRINT((ndo, "\n\t Advertised networks (total %u)",
500 (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))));
501 #if INET6
502 if (is_ipv6)
503 {
504 int i = 0;
505 while (msg_tlen >= sizeof(struct olsr_hna6)) {
506 struct olsr_hna6 *hna6;
507
508 ND_TCHECK2(*msg_data, sizeof(struct olsr_hna6));
509
510 hna6 = (struct olsr_hna6 *)msg_data;
511
512 ND_PRINT((ndo, "\n\t #%i: %s/%u",
513 i, ip6addr_string(ndo, hna6->network),
514 mask62plen (hna6->mask)));
515
516 msg_data += sizeof(struct olsr_hna6);
517 msg_tlen -= sizeof(struct olsr_hna6);
518 }
519 }
520 else
521 #endif
522 {
523 int col = 0;
524 while (msg_tlen >= sizeof(struct olsr_hna4)) {
525 ND_TCHECK2(*msg_data, sizeof(struct olsr_hna4));
526
527 ptr.hna = (struct olsr_hna4 *)msg_data;
528
529 /* print 4 prefixes per line */
530 ND_PRINT((ndo, "%s%s/%u",
531 col == 0 ? "\n\t " : ", ",
532 ipaddr_string(ndo, ptr.hna->network),
533 mask2plen(EXTRACT_32BITS(ptr.hna->mask))));
534
535 msg_data += sizeof(struct olsr_hna4);
536 msg_tlen -= sizeof(struct olsr_hna4);
537
538 col = (col + 1) % 4;
539 }
540 }
541 break;
542
543 case OLSR_NAMESERVICE_MSG:
544 {
545 u_int name_entries = EXTRACT_16BITS(msg_data+2);
546 u_int addr_size = 4;
547 int name_entries_valid = 0;
548 u_int i;
549
550 if (is_ipv6)
551 addr_size = 16;
552
553 if ((name_entries > 0)
554 && ((name_entries * (4 + addr_size)) <= msg_tlen))
555 name_entries_valid = 1;
556
557 if (msg_tlen < 4)
558 goto trunc;
559 ND_TCHECK2(*msg_data, 4);
560
561 ND_PRINT((ndo, "\n\t Version %u, Entries %u%s",
562 EXTRACT_16BITS(msg_data),
563 name_entries, (name_entries_valid == 0) ? " (invalid)" : ""));
564
565 if (name_entries_valid == 0)
566 break;
567
568 msg_data += 4;
569 msg_tlen -= 4;
570
571 for (i = 0; i < name_entries; i++) {
572 int name_entry_len_valid = 0;
573
574 if (msg_tlen < 4)
575 break;
576 ND_TCHECK2(*msg_data, 4);
577
578 name_entry_type = EXTRACT_16BITS(msg_data);
579 name_entry_len = EXTRACT_16BITS(msg_data+2);
580
581 msg_data += 4;
582 msg_tlen -= 4;
583
584 if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
585 name_entry_len_valid = 1;
586
587 ND_PRINT((ndo, "\n\t #%u: type %#06x, length %u%s",
588 (unsigned int) i, name_entry_type,
589 name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : ""));
590
591 if (name_entry_len_valid == 0)
592 break;
593
594 /* 32-bit alignment */
595 name_entry_padding = 0;
596 if (name_entry_len%4 != 0)
597 name_entry_padding = 4-(name_entry_len%4);
598
599 if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
600 goto trunc;
601
602 ND_TCHECK2(*msg_data, addr_size + name_entry_len + name_entry_padding);
603
604 #if INET6
605 if (is_ipv6)
606 ND_PRINT((ndo, ", address %s, name \"",
607 ip6addr_string(ndo, msg_data)));
608 else
609 #endif
610 ND_PRINT((ndo, ", address %s, name \"",
611 ipaddr_string(ndo, msg_data)));
612 (void)fn_printn(ndo, msg_data + addr_size, name_entry_len, NULL);
613 ND_PRINT((ndo, "\""));
614
615 msg_data += addr_size + name_entry_len + name_entry_padding;
616 msg_tlen -= addr_size + name_entry_len + name_entry_padding;
617 } /* for (i = 0; i < name_entries; i++) */
618 break;
619 } /* case OLSR_NAMESERVICE_MSG */
620
621 /*
622 * FIXME those are the defined messages that lack a decoder
623 * you are welcome to contribute code ;-)
624 */
625 case OLSR_POWERINFO_MSG:
626 default:
627 print_unknown_data(ndo, msg_data, "\n\t ", msg_tlen);
628 break;
629 } /* switch (msg_type) */
630 tptr += msg_len;
631 } /* while (tptr < (pptr+length)) */
632
633 return;
634
635 trunc:
636 ND_PRINT((ndo, "[|olsr]"));
637 }
638
639 /*
640 * Local Variables:
641 * c-style: whitesmith
642 * c-basic-offset: 4
643 * End:
644 */
645