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Get rid of unneeded includes of <netinet/in_systm.h> and <netinet/ip.h>.
[tcpdump] / print-ospf6.c
1 /*
2 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 *
21 * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
22 */
23
24 #ifndef lint
25 static const char rcsid[] =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-ospf6.c,v 1.7 2001-05-09 01:08:03 fenner Exp $ (LBL)";
27 #endif
28
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <sys/param.h>
34 #include <sys/time.h>
35 #include <sys/socket.h>
36
37 #include <netinet/in.h>
38
39 #include <ctype.h>
40 #include <stdio.h>
41 #include <string.h>
42
43 #include "interface.h"
44 #include "addrtoname.h"
45
46 #include "ospf6.h"
47
48 struct bits {
49 u_int32_t bit;
50 const char *str;
51 };
52
53 static const struct bits ospf6_option_bits[] = {
54 { OSPF6_OPTION_V6, "V6" },
55 { OSPF6_OPTION_E, "E" },
56 { OSPF6_OPTION_MC, "MC" },
57 { OSPF6_OPTION_N, "N" },
58 { OSPF6_OPTION_R, "R" },
59 { OSPF6_OPTION_DC, "DC" },
60 { 0, NULL }
61 };
62
63 static const struct bits ospf6_rla_flag_bits[] = {
64 { RLA_FLAG_B, "B" },
65 { RLA_FLAG_E, "E" },
66 { RLA_FLAG_V, "V" },
67 { RLA_FLAG_W, "W" },
68 { 0, NULL }
69 };
70
71 static const struct bits ospf6_asla_flag_bits[] = {
72 { ASLA_FLAG_EXTERNAL, "E" },
73 { ASLA_FLAG_FWDADDR, "F" },
74 { ASLA_FLAG_ROUTETAG, "T" },
75 { 0, NULL }
76 };
77
78 static struct tok type2str[] = {
79 { OSPF_TYPE_UMD, "umd" },
80 { OSPF_TYPE_HELLO, "hello" },
81 { OSPF_TYPE_DB, "dd" },
82 { OSPF_TYPE_LSR, "ls_req" },
83 { OSPF_TYPE_LSU, "ls_upd" },
84 { OSPF_TYPE_LSA, "ls_ack" },
85 { 0, NULL }
86 };
87
88 static char tstr[] = " [|ospf]";
89
90 /* Forwards */
91 static inline void ospf6_print_seqage(u_int32_t, time_t);
92 static inline void ospf6_print_bits(const struct bits *, u_char);
93 static void ospf6_print_ls_type(u_int, const rtrid_t *,
94 const rtrid_t *, const char *);
95 static int ospf6_print_lshdr(const struct lsa_hdr *);
96 static int ospf6_print_lsa(const struct lsa *);
97 static int ospf6_decode_v3(const struct ospf6hdr *, const u_char *);
98
99 static inline void
100 ospf6_print_seqage(register u_int32_t seq, register time_t us)
101 {
102 register time_t sec = us % 60;
103 register time_t mins = (us / 60) % 60;
104 register time_t hour = us / 3600;
105
106 printf(" S %X age ", seq);
107 if (hour)
108 printf("%u:%02u:%02u",
109 (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
110 else if (mins)
111 printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
112 else
113 printf("%u", (u_int32_t) sec);
114 }
115
116
117 static inline void
118 ospf6_print_bits(register const struct bits *bp, register u_char options)
119 {
120 register char sep = ' ';
121
122 do {
123 if (options & bp->bit) {
124 printf("%c%s", sep, bp->str);
125 sep = '/';
126 }
127 } while ((++bp)->bit);
128 }
129
130 static void
131 ospf6_print_ls_type(register u_int ls_type,
132 register const rtrid_t *ls_stateid,
133 register const rtrid_t *ls_router, register const char *fmt)
134 {
135 char *scope;
136
137 switch (ls_type & LS_SCOPE_MASK) {
138 case LS_SCOPE_LINKLOCAL:
139 scope = "linklocal-";
140 break;
141 case LS_SCOPE_AREA:
142 scope = "area-";
143 break;
144 case LS_SCOPE_AS:
145 scope = "AS-";
146 break;
147 default:
148 scope = "";
149 break;
150 }
151
152 switch (ls_type & LS_TYPE_MASK) {
153 case LS_TYPE_ROUTER:
154 printf(" %srtr %s", scope, ipaddr_string(ls_router));
155 break;
156
157 case LS_TYPE_NETWORK:
158 printf(" %snet dr %s if %s", scope,
159 ipaddr_string(ls_router),
160 ipaddr_string(ls_stateid));
161 break;
162
163 case LS_TYPE_INTER_AP:
164 printf(" %sinter-area-prefix %s abr %s", scope,
165 ipaddr_string(ls_stateid),
166 ipaddr_string(ls_router));
167 break;
168
169 case LS_TYPE_INTER_AR:
170 printf(" %sinter-area-router %s rtr %s", scope,
171 ipaddr_string(ls_router),
172 ipaddr_string(ls_stateid));
173 break;
174
175 case LS_TYPE_ASE:
176 printf(" %sase %s asbr %s", scope,
177 ipaddr_string(ls_stateid),
178 ipaddr_string(ls_router));
179 break;
180
181 case LS_TYPE_GROUP:
182 printf(" %sgroup %s rtr %s", scope,
183 ipaddr_string(ls_stateid),
184 ipaddr_string(ls_router));
185 break;
186
187 case LS_TYPE_TYPE7:
188 printf(" %stype7 %s rtr %s", scope,
189 ipaddr_string(ls_stateid),
190 ipaddr_string(ls_router));
191 break;
192
193 case LS_TYPE_LINK:
194 printf(" %slink %s rtr %s", scope,
195 ipaddr_string(ls_stateid),
196 ipaddr_string(ls_router));
197 break;
198
199 case LS_TYPE_INTRA_AP:
200 printf(" %sintra-area-prefix %s rtr %s", scope,
201 ipaddr_string(ls_stateid),
202 ipaddr_string(ls_router));
203 break;
204
205 default:
206 printf(" %s", scope);
207 printf(fmt, ls_type);
208 break;
209 }
210
211 }
212
213 static int
214 ospf6_print_lshdr(register const struct lsa_hdr *lshp)
215 {
216
217 TCHECK(lshp->ls_type);
218 printf(" {"); /* } (ctags) */
219
220 TCHECK(lshp->ls_seq);
221 ospf6_print_seqage(ntohl(lshp->ls_seq), ntohs(lshp->ls_age));
222 ospf6_print_ls_type(ntohs(lshp->ls_type), &lshp->ls_stateid,
223 &lshp->ls_router, "ls_type %d");
224
225 return (0);
226 trunc:
227 return (1);
228 }
229
230 static int
231 ospf6_print_lsaprefix(register const struct lsa_prefix *lsapp)
232 {
233 int k;
234 struct in6_addr prefix;
235
236 TCHECK(*lsapp);
237 k = (lsapp->lsa_p_len + 31) / 32;
238 if (k * 4 > sizeof(struct in6_addr)) {
239 printf("??prefixlen %d??", lsapp->lsa_p_len);
240 goto trunc;
241 }
242 memset(&prefix, 0, sizeof(prefix));
243 memcpy(&prefix, lsapp->lsa_p_prefix, k * 4);
244 printf(" %s/%d", ip6addr_string(&prefix),
245 lsapp->lsa_p_len);
246 if (lsapp->lsa_p_opt)
247 printf("(opt=%x)", lsapp->lsa_p_opt);
248 if (lsapp->lsa_p_mbz)
249 printf("(mbz=%x)", ntohs(lsapp->lsa_p_mbz)); /* XXX */
250 return sizeof(*lsapp) - 4 + k * 4;
251
252 trunc:
253 return -1;
254 }
255
256
257 /*
258 * Print a single link state advertisement. If truncated return 1, else 0.
259 */
260 static int
261 ospf6_print_lsa(register const struct lsa *lsap)
262 {
263 register const u_char *ls_end, *ls_opt;
264 register const struct rlalink *rlp;
265 #if 0
266 register const struct tos_metric *tosp;
267 #endif
268 register const rtrid_t *ap;
269 #if 0
270 register const struct aslametric *almp;
271 register const struct mcla *mcp;
272 #endif
273 register const struct llsa *llsap;
274 register const struct lsa_prefix *lsapp;
275 #if 0
276 register const u_int32_t *lp;
277 #endif
278 register int j, k;
279 u_int32_t flags32;
280
281 if (ospf6_print_lshdr(&lsap->ls_hdr))
282 return (1);
283 TCHECK(lsap->ls_hdr.ls_length);
284 ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length);
285 switch (ntohs(lsap->ls_hdr.ls_type)) {
286 case LS_TYPE_ROUTER | LS_SCOPE_AREA:
287 TCHECK(lsap->lsa_un.un_rla.rla_flags);
288 ospf6_print_bits(ospf6_rla_flag_bits,
289 lsap->lsa_un.un_rla.rla_flags);
290 TCHECK(lsap->lsa_un.un_rla.rla_options);
291 ospf6_print_bits(ospf6_option_bits,
292 ntohl(lsap->lsa_un.un_rla.rla_options));
293
294 TCHECK(lsap->lsa_un.un_rla.rla_link);
295 rlp = lsap->lsa_un.un_rla.rla_link;
296 while (rlp + sizeof(*rlp) <= (struct rlalink *)ls_end) {
297 TCHECK(*rlp);
298 printf(" {"); /* } (ctags) */
299 switch (rlp->link_type) {
300
301 case RLA_TYPE_VIRTUAL:
302 printf(" virt");
303 /* Fall through */
304
305 case RLA_TYPE_ROUTER:
306 printf(" nbrid %s nbrif %s if %s",
307 ipaddr_string(&rlp->link_nrtid),
308 ipaddr_string(&rlp->link_nifid),
309 ipaddr_string(&rlp->link_ifid));
310 break;
311
312 case RLA_TYPE_TRANSIT:
313 printf(" dr %s drif %s if %s",
314 ipaddr_string(&rlp->link_nrtid),
315 ipaddr_string(&rlp->link_nifid),
316 ipaddr_string(&rlp->link_ifid));
317 break;
318
319 default:
320 /* { (ctags) */
321 printf(" ??RouterLinksType 0x%02x?? }",
322 rlp->link_type);
323 return (0);
324 }
325 printf(" metric %d", ntohs(rlp->link_metric));
326 /* { (ctags) */
327 printf(" }");
328 rlp++;
329 }
330 break;
331
332 case LS_TYPE_NETWORK | LS_SCOPE_AREA:
333 TCHECK(lsap->lsa_un.un_nla.nla_options);
334 ospf6_print_bits(ospf6_option_bits,
335 ntohl(lsap->lsa_un.un_nla.nla_options));
336 printf(" rtrs");
337 ap = lsap->lsa_un.un_nla.nla_router;
338 while ((u_char *)ap < ls_end) {
339 TCHECK(*ap);
340 printf(" %s", ipaddr_string(ap));
341 ++ap;
342 }
343 break;
344
345 case LS_TYPE_INTER_AP | LS_SCOPE_AREA:
346 TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric);
347 printf(" metric %u",
348 (u_int32_t)ntohl(lsap->lsa_un.un_inter_ap.inter_ap_metric) & SLA_MASK_METRIC);
349 lsapp = lsap->lsa_un.un_inter_ap.inter_ap_prefix;
350 while (lsapp + sizeof(lsapp) <= (struct lsa_prefix *)ls_end) {
351 k = ospf6_print_lsaprefix(lsapp);
352 if (k)
353 goto trunc;
354 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
355 }
356 break;
357 case LS_SCOPE_AS | LS_TYPE_ASE:
358 TCHECK(lsap->lsa_un.un_asla.asla_metric);
359 flags32 = ntohl(lsap->lsa_un.un_asla.asla_metric);
360 ospf6_print_bits(ospf6_asla_flag_bits, flags32);
361 printf(" metric %u",
362 (u_int32_t)ntohl(lsap->lsa_un.un_asla.asla_metric) &
363 ASLA_MASK_METRIC);
364 lsapp = lsap->lsa_un.un_asla.asla_prefix;
365 k = ospf6_print_lsaprefix(lsapp);
366 if (k < 0)
367 goto trunc;
368 if ((ls_opt = (u_char *)(((u_char *)lsapp) + k)) < ls_end) {
369 struct in6_addr *fwdaddr6;
370
371 if ((flags32 & ASLA_FLAG_FWDADDR) != 0) {
372 fwdaddr6 = (struct in6_addr *)ls_opt;
373 TCHECK(*fwdaddr6);
374 printf(" forward %s",
375 ip6addr_string(fwdaddr6));
376
377 ls_opt += sizeof(struct in6_addr);
378 }
379
380 if ((flags32 & ASLA_FLAG_ROUTETAG) != 0) {
381 TCHECK(*(u_int32_t *)ls_opt);
382 printf(" tag %s",
383 ipaddr_string((u_int32_t *)ls_opt));
384
385 ls_opt += sizeof(u_int32_t);
386 }
387
388 if (lsapp->lsa_p_mbz) {
389 TCHECK(*(u_int32_t *)ls_opt);
390 printf(" RefLSID: %s",
391 ipaddr_string((u_int32_t *)ls_opt));
392
393 ls_opt += sizeof(u_int32_t);
394 }
395 }
396 break;
397 #if 0
398 case LS_TYPE_SUM_ABR:
399 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
400 lp = lsap->lsa_un.un_sla.sla_tosmetric;
401 while ((u_char *)lp < ls_end) {
402 register u_int32_t ul;
403
404 TCHECK(*lp);
405 ul = ntohl(*lp);
406 printf(" tos %d metric %d",
407 (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
408 ul & SLA_MASK_METRIC);
409 ++lp;
410 }
411 break;
412
413 case LS_TYPE_GROUP:
414 /* Multicast extensions as of 23 July 1991 */
415 mcp = lsap->lsa_un.un_mcla;
416 while ((u_char *)mcp < ls_end) {
417 TCHECK(mcp->mcla_vid);
418 switch (ntohl(mcp->mcla_vtype)) {
419
420 case MCLA_VERTEX_ROUTER:
421 printf(" rtr rtrid %s",
422 ipaddr_string(&mcp->mcla_vid));
423 break;
424
425 case MCLA_VERTEX_NETWORK:
426 printf(" net dr %s",
427 ipaddr_string(&mcp->mcla_vid));
428 break;
429
430 default:
431 printf(" ??VertexType %u??",
432 (u_int32_t)ntohl(mcp->mcla_vtype));
433 break;
434 }
435 ++mcp;
436 }
437 #endif
438
439 case LS_TYPE_LINK:
440 /* Link LSA */
441 llsap = &lsap->lsa_un.un_llsa;
442 TCHECK(llsap->llsa_options);
443 ospf6_print_bits(ospf6_option_bits, ntohl(llsap->llsa_options));
444 TCHECK(llsap->llsa_nprefix);
445 printf(" pri %d lladdr %s npref %d", llsap->llsa_priority,
446 ip6addr_string(&llsap->llsa_lladdr),
447 (u_int32_t)ntohl(llsap->llsa_nprefix));
448 lsapp = llsap->llsa_prefix;
449 for (j = 0; j < ntohl(llsap->llsa_nprefix); j++) {
450 k = ospf6_print_lsaprefix(lsapp);
451 if (k)
452 goto trunc;
453 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
454 }
455 break;
456
457 case LS_TYPE_INTRA_AP | LS_SCOPE_AREA:
458 /* Intra-Area-Prefix LSA */
459 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_rtid);
460 ospf6_print_ls_type(
461 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_lstype),
462 &lsap->lsa_un.un_intra_ap.intra_ap_lsid,
463 &lsap->lsa_un.un_intra_ap.intra_ap_rtid,
464 "LinkStateType %d");
465 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
466 printf(" npref %d",
467 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix));
468
469 lsapp = lsap->lsa_un.un_intra_ap.intra_ap_prefix;
470 for (j = 0;
471 j < ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
472 j++) {
473 k = ospf6_print_lsaprefix(lsapp);
474 if (k)
475 goto trunc;
476 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
477 }
478 break;
479
480 default:
481 printf(" ??LinkStateType 0x%04x??",
482 ntohs(lsap->ls_hdr.ls_type));
483 }
484
485 /* { (ctags) */
486 fputs(" }", stdout);
487 return (0);
488 trunc:
489 fputs(" }", stdout);
490 return (1);
491 }
492
493 static int
494 ospf6_decode_v3(register const struct ospf6hdr *op,
495 register const u_char *dataend)
496 {
497 register const rtrid_t *ap;
498 register const struct lsr *lsrp;
499 register const struct lsa_hdr *lshp;
500 register const struct lsa *lsap;
501 register char sep;
502 register int i;
503
504 switch (op->ospf6_type) {
505
506 case OSPF_TYPE_UMD:
507 /*
508 * Rob Coltun's special monitoring packets;
509 * do nothing
510 */
511 break;
512
513 case OSPF_TYPE_HELLO:
514 if (vflag) {
515 TCHECK(op->ospf6_hello.hello_deadint);
516 ospf6_print_bits(ospf6_option_bits,
517 ntohl(op->ospf6_hello.hello_options));
518 printf(" ifid %s pri %d int %d dead %u",
519 ipaddr_string(&op->ospf6_hello.hello_ifid),
520 op->ospf6_hello.hello_priority,
521 ntohs(op->ospf6_hello.hello_helloint),
522 ntohs(op->ospf6_hello.hello_deadint));
523 }
524 TCHECK(op->ospf6_hello.hello_dr);
525 if (op->ospf6_hello.hello_dr != 0)
526 printf(" dr %s",
527 ipaddr_string(&op->ospf6_hello.hello_dr));
528 TCHECK(op->ospf6_hello.hello_bdr);
529 if (op->ospf6_hello.hello_bdr != 0)
530 printf(" bdr %s",
531 ipaddr_string(&op->ospf6_hello.hello_bdr));
532 if (vflag) {
533 printf(" nbrs");
534 ap = op->ospf6_hello.hello_neighbor;
535 while ((u_char *)ap < dataend) {
536 TCHECK(*ap);
537 printf(" %s", ipaddr_string(ap));
538 ++ap;
539 }
540 }
541 break; /* HELLO */
542
543 case OSPF_TYPE_DB:
544 TCHECK(op->ospf6_db.db_options);
545 ospf6_print_bits(ospf6_option_bits,
546 ntohl(op->ospf6_db.db_options));
547 sep = ' ';
548 TCHECK(op->ospf6_db.db_flags);
549 if (op->ospf6_db.db_flags & OSPF6_DB_INIT) {
550 printf("%cI", sep);
551 sep = '/';
552 }
553 if (op->ospf6_db.db_flags & OSPF6_DB_MORE) {
554 printf("%cM", sep);
555 sep = '/';
556 }
557 if (op->ospf6_db.db_flags & OSPF6_DB_MASTER) {
558 printf("%cMS", sep);
559 sep = '/';
560 }
561 TCHECK(op->ospf6_db.db_seq);
562 printf(" mtu %u S %X", ntohs(op->ospf6_db.db_mtu),
563 (u_int32_t)ntohl(op->ospf6_db.db_seq));
564
565 if (vflag) {
566 /* Print all the LS adv's */
567 lshp = op->ospf6_db.db_lshdr;
568
569 while (!ospf6_print_lshdr(lshp)) {
570 /* { (ctags) */
571 printf(" }");
572 ++lshp;
573 }
574 }
575 break;
576
577 case OSPF_TYPE_LSR:
578 if (vflag) {
579 lsrp = op->ospf6_lsr;
580 while ((u_char *)lsrp < dataend) {
581 TCHECK(*lsrp);
582 printf(" {"); /* } (ctags) */
583 ospf6_print_ls_type(ntohs(lsrp->ls_type),
584 &lsrp->ls_stateid,
585 &lsrp->ls_router,
586 "LinkStateType %d");
587 /* { (ctags) */
588 printf(" }");
589 ++lsrp;
590 }
591 }
592 break;
593
594 case OSPF_TYPE_LSU:
595 if (vflag) {
596 lsap = op->ospf6_lsu.lsu_lsa;
597 TCHECK(op->ospf6_lsu.lsu_count);
598 i = ntohl(op->ospf6_lsu.lsu_count);
599 while (i--) {
600 if (ospf6_print_lsa(lsap))
601 goto trunc;
602 lsap = (struct lsa *)((u_char *)lsap +
603 ntohs(lsap->ls_hdr.ls_length));
604 }
605 }
606 break;
607
608
609 case OSPF_TYPE_LSA:
610 if (vflag) {
611 lshp = op->ospf6_lsa.lsa_lshdr;
612
613 while (!ospf6_print_lshdr(lshp)) {
614 /* { (ctags) */
615 printf(" }");
616 ++lshp;
617 }
618 }
619 break;
620
621 default:
622 printf("v3 type %d", op->ospf6_type);
623 break;
624 }
625 return (0);
626 trunc:
627 return (1);
628 }
629
630 void
631 ospf6_print(register const u_char *bp, register u_int length)
632 {
633 register const struct ospf6hdr *op;
634 register const u_char *dataend;
635 register const char *cp;
636
637 op = (struct ospf6hdr *)bp;
638
639 /* If the type is valid translate it, or just print the type */
640 /* value. If it's not valid, say so and return */
641 TCHECK(op->ospf6_type);
642 cp = tok2str(type2str, "type%d", op->ospf6_type);
643 printf("OSPFv%d-%s %d:", op->ospf6_version, cp, length);
644 if (*cp == 't')
645 return;
646
647 TCHECK(op->ospf6_len);
648 if (length != ntohs(op->ospf6_len)) {
649 printf(" [len %d]", ntohs(op->ospf6_len));
650 return;
651 }
652 dataend = bp + length;
653
654 /* Print the routerid if it is not the same as the source */
655 TCHECK(op->ospf6_routerid);
656 printf(" rtrid %s", ipaddr_string(&op->ospf6_routerid));
657
658 TCHECK(op->ospf6_areaid);
659 if (op->ospf6_areaid != 0)
660 printf(" area %s", ipaddr_string(&op->ospf6_areaid));
661 else
662 printf(" backbone");
663 TCHECK(op->ospf6_instanceid);
664 if (op->ospf6_instanceid)
665 printf(" instance %u", op->ospf6_instanceid);
666
667 /* Do rest according to version. */
668 switch (op->ospf6_version) {
669
670 case 3:
671 /* ospf version 3 */
672 if (ospf6_decode_v3(op, dataend))
673 goto trunc;
674 break;
675
676 default:
677 printf(" ospf [version %d]", op->ospf6_version);
678 break;
679 } /* end switch on version */
680
681 return;
682 trunc:
683 fputs(tstr, stdout);
684 }
[mirror] the TCPdump network dissector