2 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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
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.
21 * OSPF support contributed by Jeffrey Honig (jch@mitchell.cit.cornell.edu)
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)";
33 #include <sys/param.h>
35 #include <sys/socket.h>
37 #include <netinet/in.h>
43 #include "interface.h"
44 #include "addrtoname.h"
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" },
63 static const struct bits ospf6_rla_flag_bits[] = {
71 static const struct bits ospf6_asla_flag_bits[] = {
72 { ASLA_FLAG_EXTERNAL, "E" },
73 { ASLA_FLAG_FWDADDR, "F" },
74 { ASLA_FLAG_ROUTETAG, "T" },
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" },
88 static char tstr[] = " [|ospf]";
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 *);
100 ospf6_print_seqage(register u_int32_t seq, register time_t us)
102 register time_t sec = us % 60;
103 register time_t mins = (us / 60) % 60;
104 register time_t hour = us / 3600;
106 printf(" S %X age ", seq);
108 printf("%u:%02u:%02u",
109 (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
111 printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
113 printf("%u", (u_int32_t) sec);
118 ospf6_print_bits(register const struct bits *bp, register u_char options)
120 register char sep = ' ';
123 if (options & bp->bit) {
124 printf("%c%s", sep, bp->str);
127 } while ((++bp)->bit);
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)
137 switch (ls_type & LS_SCOPE_MASK) {
138 case LS_SCOPE_LINKLOCAL:
139 scope = "linklocal-";
152 switch (ls_type & LS_TYPE_MASK) {
154 printf(" %srtr %s", scope, ipaddr_string(ls_router));
157 case LS_TYPE_NETWORK:
158 printf(" %snet dr %s if %s", scope,
159 ipaddr_string(ls_router),
160 ipaddr_string(ls_stateid));
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));
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));
176 printf(" %sase %s asbr %s", scope,
177 ipaddr_string(ls_stateid),
178 ipaddr_string(ls_router));
182 printf(" %sgroup %s rtr %s", scope,
183 ipaddr_string(ls_stateid),
184 ipaddr_string(ls_router));
188 printf(" %stype7 %s rtr %s", scope,
189 ipaddr_string(ls_stateid),
190 ipaddr_string(ls_router));
194 printf(" %slink %s rtr %s", scope,
195 ipaddr_string(ls_stateid),
196 ipaddr_string(ls_router));
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));
206 printf(" %s", scope);
207 printf(fmt, ls_type);
214 ospf6_print_lshdr(register const struct lsa_hdr *lshp)
217 TCHECK(lshp->ls_type);
218 printf(" {"); /* } (ctags) */
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");
231 ospf6_print_lsaprefix(register const struct lsa_prefix *lsapp)
234 struct in6_addr prefix;
237 k = (lsapp->lsa_p_len + 31) / 32;
238 if (k * 4 > sizeof(struct in6_addr)) {
239 printf("??prefixlen %d??", lsapp->lsa_p_len);
242 memset(&prefix, 0, sizeof(prefix));
243 memcpy(&prefix, lsapp->lsa_p_prefix, k * 4);
244 printf(" %s/%d", ip6addr_string(&prefix),
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;
258 * Print a single link state advertisement. If truncated return 1, else 0.
261 ospf6_print_lsa(register const struct lsa *lsap)
263 register const u_char *ls_end, *ls_opt;
264 register const struct rlalink *rlp;
266 register const struct tos_metric *tosp;
268 register const rtrid_t *ap;
270 register const struct aslametric *almp;
271 register const struct mcla *mcp;
273 register const struct llsa *llsap;
274 register const struct lsa_prefix *lsapp;
276 register const u_int32_t *lp;
281 if (ospf6_print_lshdr(&lsap->ls_hdr))
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));
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) {
298 printf(" {"); /* } (ctags) */
299 switch (rlp->link_type) {
301 case RLA_TYPE_VIRTUAL:
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));
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));
321 printf(" ??RouterLinksType 0x%02x?? }",
325 printf(" metric %d", ntohs(rlp->link_metric));
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));
337 ap = lsap->lsa_un.un_nla.nla_router;
338 while ((u_char *)ap < ls_end) {
340 printf(" %s", ipaddr_string(ap));
345 case LS_TYPE_INTER_AP | LS_SCOPE_AREA:
346 TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric);
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);
354 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
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);
362 (u_int32_t)ntohl(lsap->lsa_un.un_asla.asla_metric) &
364 lsapp = lsap->lsa_un.un_asla.asla_prefix;
365 k = ospf6_print_lsaprefix(lsapp);
368 if ((ls_opt = (u_char *)(((u_char *)lsapp) + k)) < ls_end) {
369 struct in6_addr *fwdaddr6;
371 if ((flags32 & ASLA_FLAG_FWDADDR) != 0) {
372 fwdaddr6 = (struct in6_addr *)ls_opt;
374 printf(" forward %s",
375 ip6addr_string(fwdaddr6));
377 ls_opt += sizeof(struct in6_addr);
380 if ((flags32 & ASLA_FLAG_ROUTETAG) != 0) {
381 TCHECK(*(u_int32_t *)ls_opt);
383 ipaddr_string((u_int32_t *)ls_opt));
385 ls_opt += sizeof(u_int32_t);
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));
393 ls_opt += sizeof(u_int32_t);
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;
406 printf(" tos %d metric %d",
407 (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
408 ul & SLA_MASK_METRIC);
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)) {
420 case MCLA_VERTEX_ROUTER:
421 printf(" rtr rtrid %s",
422 ipaddr_string(&mcp->mcla_vid));
425 case MCLA_VERTEX_NETWORK:
427 ipaddr_string(&mcp->mcla_vid));
431 printf(" ??VertexType %u??",
432 (u_int32_t)ntohl(mcp->mcla_vtype));
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);
453 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
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);
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,
465 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
467 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix));
469 lsapp = lsap->lsa_un.un_intra_ap.intra_ap_prefix;
471 j < ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
473 k = ospf6_print_lsaprefix(lsapp);
476 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
481 printf(" ??LinkStateType 0x%04x??",
482 ntohs(lsap->ls_hdr.ls_type));
494 ospf6_decode_v3(register const struct ospf6hdr *op,
495 register const u_char *dataend)
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;
504 switch (op->ospf6_type) {
508 * Rob Coltun's special monitoring packets;
513 case OSPF_TYPE_HELLO:
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));
524 TCHECK(op->ospf6_hello.hello_dr);
525 if (op->ospf6_hello.hello_dr != 0)
527 ipaddr_string(&op->ospf6_hello.hello_dr));
528 TCHECK(op->ospf6_hello.hello_bdr);
529 if (op->ospf6_hello.hello_bdr != 0)
531 ipaddr_string(&op->ospf6_hello.hello_bdr));
534 ap = op->ospf6_hello.hello_neighbor;
535 while ((u_char *)ap < dataend) {
537 printf(" %s", ipaddr_string(ap));
544 TCHECK(op->ospf6_db.db_options);
545 ospf6_print_bits(ospf6_option_bits,
546 ntohl(op->ospf6_db.db_options));
548 TCHECK(op->ospf6_db.db_flags);
549 if (op->ospf6_db.db_flags & OSPF6_DB_INIT) {
553 if (op->ospf6_db.db_flags & OSPF6_DB_MORE) {
557 if (op->ospf6_db.db_flags & OSPF6_DB_MASTER) {
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));
566 /* Print all the LS adv's */
567 lshp = op->ospf6_db.db_lshdr;
569 while (!ospf6_print_lshdr(lshp)) {
579 lsrp = op->ospf6_lsr;
580 while ((u_char *)lsrp < dataend) {
582 printf(" {"); /* } (ctags) */
583 ospf6_print_ls_type(ntohs(lsrp->ls_type),
596 lsap = op->ospf6_lsu.lsu_lsa;
597 TCHECK(op->ospf6_lsu.lsu_count);
598 i = ntohl(op->ospf6_lsu.lsu_count);
600 if (ospf6_print_lsa(lsap))
602 lsap = (struct lsa *)((u_char *)lsap +
603 ntohs(lsap->ls_hdr.ls_length));
611 lshp = op->ospf6_lsa.lsa_lshdr;
613 while (!ospf6_print_lshdr(lshp)) {
622 printf("v3 type %d", op->ospf6_type);
631 ospf6_print(register const u_char *bp, register u_int length)
633 register const struct ospf6hdr *op;
634 register const u_char *dataend;
635 register const char *cp;
637 op = (struct ospf6hdr *)bp;
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);
647 TCHECK(op->ospf6_len);
648 if (length != ntohs(op->ospf6_len)) {
649 printf(" [len %d]", ntohs(op->ospf6_len));
652 dataend = bp + length;
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));
658 TCHECK(op->ospf6_areaid);
659 if (op->ospf6_areaid != 0)
660 printf(" area %s", ipaddr_string(&op->ospf6_areaid));
663 TCHECK(op->ospf6_instanceid);
664 if (op->ospf6_instanceid)
665 printf(" instance %u", op->ospf6_instanceid);
667 /* Do rest according to version. */
668 switch (op->ospf6_version) {
672 if (ospf6_decode_v3(op, dataend))
677 printf(" ospf [version %d]", op->ospf6_version);
679 } /* end switch on version */