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 1.2 1999/11/21 09:36:58 fenner Exp $ (LBL)";
33 #include <sys/param.h>
35 #include <sys/socket.h>
37 #include <netinet/in.h>
38 #include <netinet/in_systm.h>
39 #include <netinet/ip.h>
40 #include <netinet/ip_var.h>
46 #include "interface.h"
47 #include "addrtoname.h"
56 static const struct bits ospf6_option_bits[] = {
57 { OSPF6_OPTION_V6, "V6" },
58 { OSPF6_OPTION_E, "E" },
59 { OSPF6_OPTION_MC, "MC" },
60 { OSPF6_OPTION_N, "N" },
61 { OSPF6_OPTION_R, "R" },
62 { OSPF6_OPTION_DC, "DC" },
66 static const struct bits ospf6_rla_flag_bits[] = {
74 static struct tok type2str[] = {
75 { OSPF_TYPE_UMD, "umd" },
76 { OSPF_TYPE_HELLO, "hello" },
77 { OSPF_TYPE_DB, "dd" },
78 { OSPF_TYPE_LSR, "ls_req" },
79 { OSPF_TYPE_LSU, "ls_upd" },
80 { OSPF_TYPE_LSA, "ls_ack" },
84 static char tstr[] = " [|ospf]";
87 static inline void ospf6_print_seqage(u_int32_t, time_t);
88 static inline void ospf6_print_bits(const struct bits *, u_char);
89 static void ospf6_print_ls_type(u_int, const rtrid_t *,
90 const rtrid_t *, const char *);
91 static int ospf6_print_lshdr(const struct lsa_hdr *);
92 static int ospf6_print_lsa(const struct lsa *);
93 static int ospf6_decode_v3(const struct ospf6hdr *, const u_char *);
96 ospf6_print_seqage(register u_int32_t seq, register time_t us)
98 register time_t sec = us % 60;
99 register time_t mins = (us / 60) % 60;
100 register time_t hour = us / 3600;
102 printf(" S %X age ", seq);
104 printf("%u:%02u:%02u",
105 (u_int32_t) hour, (u_int32_t) mins, (u_int32_t) sec);
107 printf("%u:%02u", (u_int32_t) mins, (u_int32_t) sec);
109 printf("%u", (u_int32_t) sec);
114 ospf6_print_bits(register const struct bits *bp, register u_char options)
116 register char sep = ' ';
119 if (options & bp->bit) {
120 printf("%c%s", sep, bp->str);
123 } while ((++bp)->bit);
127 ospf6_print_ls_type(register u_int ls_type,
128 register const rtrid_t *ls_stateid,
129 register const rtrid_t *ls_router, register const char *fmt)
133 switch (ls_type & LS_SCOPE_MASK) {
134 case LS_SCOPE_LINKLOCAL:
135 scope = "linklocal-";
148 switch (ls_type & LS_TYPE_MASK) {
150 printf(" %srtr %s", scope, ipaddr_string(ls_router));
153 case LS_TYPE_NETWORK:
154 printf(" %snet dr %s if %s", scope,
155 ipaddr_string(ls_router),
156 ipaddr_string(ls_stateid));
159 case LS_TYPE_INTER_AP:
160 printf(" %sinter-area-prefix %s abr %s", scope,
161 ipaddr_string(ls_stateid),
162 ipaddr_string(ls_router));
165 case LS_TYPE_INTER_AR:
166 printf(" %sinter-area-router %s rtr %s", scope,
167 ipaddr_string(ls_router),
168 ipaddr_string(ls_stateid));
172 printf(" %sase %s asbr %s", scope,
173 ipaddr_string(ls_stateid),
174 ipaddr_string(ls_router));
178 printf(" %sgroup %s rtr %s", scope,
179 ipaddr_string(ls_stateid),
180 ipaddr_string(ls_router));
184 printf(" %stype7 %s rtr %s", scope,
185 ipaddr_string(ls_stateid),
186 ipaddr_string(ls_router));
190 printf(" %slink %s rtr %s", scope,
191 ipaddr_string(ls_stateid),
192 ipaddr_string(ls_router));
195 case LS_TYPE_INTRA_AP:
196 printf(" %sintra-area-prefix %s rtr %s", scope,
197 ipaddr_string(ls_stateid),
198 ipaddr_string(ls_router));
202 printf(" %s", scope);
203 printf(fmt, ls_type);
210 ospf6_print_lshdr(register const struct lsa_hdr *lshp)
213 TCHECK(lshp->ls_type);
214 printf(" {"); /* } (ctags) */
216 TCHECK(lshp->ls_seq);
217 ospf6_print_seqage(ntohl(lshp->ls_seq), ntohs(lshp->ls_age));
218 ospf6_print_ls_type(ntohs(lshp->ls_type), &lshp->ls_stateid,
219 &lshp->ls_router, "ls_type %d");
227 ospf6_print_lsaprefix(register const struct lsa_prefix *lsapp)
230 struct in6_addr prefix;
233 k = (lsapp->lsa_p_len + 31) / 32;
234 if (k * 4 > sizeof(struct in6_addr)) {
235 printf("??prefixlen %d??", lsapp->lsa_p_len);
238 memset(&prefix, 0, sizeof(prefix));
239 memcpy(&prefix, lsapp->lsa_p_prefix, k * 4);
240 printf(" %s/%d", ip6addr_string(&prefix),
242 if (lsapp->lsa_p_opt)
243 printf("(opt=%x)", lsapp->lsa_p_opt);
244 return sizeof(*lsapp) - 4 + k * 4;
252 * Print a single link state advertisement. If truncated return 1, else 0.
255 ospf6_print_lsa(register const struct lsa *lsap)
257 register const u_char *ls_end;
258 register const struct rlalink *rlp;
260 register const struct tos_metric *tosp;
262 register const rtrid_t *ap;
264 register const struct aslametric *almp;
265 register const struct mcla *mcp;
267 register const struct llsa *llsap;
268 register const struct lsa_prefix *lsapp;
270 register const u_int32_t *lp;
274 if (ospf6_print_lshdr(&lsap->ls_hdr))
276 TCHECK(lsap->ls_hdr.ls_length);
277 ls_end = (u_char *)lsap + ntohs(lsap->ls_hdr.ls_length);
278 switch (ntohs(lsap->ls_hdr.ls_type)) {
279 case LS_TYPE_ROUTER | LS_SCOPE_AREA:
280 TCHECK(lsap->lsa_un.un_rla.rla_flags);
281 ospf6_print_bits(ospf6_rla_flag_bits,
282 lsap->lsa_un.un_rla.rla_flags);
283 TCHECK(lsap->lsa_un.un_rla.rla_options);
284 ospf6_print_bits(ospf6_option_bits,
285 ntohl(lsap->lsa_un.un_rla.rla_options));
287 TCHECK(lsap->lsa_un.un_rla.rla_link);
288 rlp = lsap->lsa_un.un_rla.rla_link;
289 while (rlp + sizeof(*rlp) <= (struct rlalink *)ls_end) {
291 printf(" {"); /* } (ctags) */
292 switch (rlp->link_type) {
294 case RLA_TYPE_VIRTUAL:
298 case RLA_TYPE_ROUTER:
299 printf(" nbrid %s nbrif %s if %s",
300 ipaddr_string(&rlp->link_nrtid),
301 ipaddr_string(&rlp->link_nifid),
302 ipaddr_string(&rlp->link_ifid));
305 case RLA_TYPE_TRANSIT:
306 printf(" dr %s drif %s if %s",
307 ipaddr_string(&rlp->link_nrtid),
308 ipaddr_string(&rlp->link_nifid),
309 ipaddr_string(&rlp->link_ifid));
314 printf(" ??RouterLinksType 0x%02x?? }",
318 printf(" metric %d", ntohs(rlp->link_metric));
325 case LS_TYPE_NETWORK | LS_SCOPE_AREA:
326 TCHECK(lsap->lsa_un.un_nla.nla_options);
327 ospf6_print_bits(ospf6_option_bits,
328 ntohl(lsap->lsa_un.un_nla.nla_options));
330 ap = lsap->lsa_un.un_nla.nla_router;
331 while ((u_char *)ap < ls_end) {
333 printf(" %s", ipaddr_string(ap));
338 case LS_TYPE_INTER_AP | LS_SCOPE_AREA:
339 TCHECK(lsap->lsa_un.un_inter_ap.inter_ap_metric);
341 (u_int32_t)ntohl(lsap->lsa_un.un_inter_ap.inter_ap_metric) & SLA_MASK_METRIC);
342 lsapp = lsap->lsa_un.un_inter_ap.inter_ap_prefix;
343 while (lsapp + sizeof(lsapp) <= (struct lsa_prefix *)ls_end) {
344 k = ospf6_print_lsaprefix(lsapp);
347 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
352 case LS_TYPE_SUM_ABR:
353 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
354 lp = lsap->lsa_un.un_sla.sla_tosmetric;
355 while ((u_char *)lp < ls_end) {
356 register u_int32_t ul;
360 printf(" tos %d metric %d",
361 (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS,
362 ul & SLA_MASK_METRIC);
368 TCHECK(lsap->lsa_un.un_nla.nla_mask);
370 ipaddr_string(&lsap->lsa_un.un_asla.asla_mask));
372 TCHECK(lsap->lsa_un.un_sla.sla_tosmetric);
373 almp = lsap->lsa_un.un_asla.asla_metric;
374 while ((u_char *)almp < ls_end) {
375 register u_int32_t ul;
377 TCHECK(almp->asla_tosmetric);
378 ul = ntohl(almp->asla_tosmetric);
379 printf(" type %d tos %d metric %d",
380 (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1,
381 (ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS,
382 (ul & ASLA_MASK_METRIC));
383 TCHECK(almp->asla_forward);
384 if (almp->asla_forward.s_addr) {
385 printf(" forward %s",
386 ipaddr_string(&almp->asla_forward));
388 TCHECK(almp->asla_tag);
389 if (almp->asla_tag.s_addr) {
391 ipaddr_string(&almp->asla_tag));
398 /* Multicast extensions as of 23 July 1991 */
399 mcp = lsap->lsa_un.un_mcla;
400 while ((u_char *)mcp < ls_end) {
401 TCHECK(mcp->mcla_vid);
402 switch (ntohl(mcp->mcla_vtype)) {
404 case MCLA_VERTEX_ROUTER:
405 printf(" rtr rtrid %s",
406 ipaddr_string(&mcp->mcla_vid));
409 case MCLA_VERTEX_NETWORK:
411 ipaddr_string(&mcp->mcla_vid));
415 printf(" ??VertexType %u??",
416 (u_int32_t)ntohl(mcp->mcla_vtype));
425 llsap = &lsap->lsa_un.un_llsa;
426 TCHECK(llsap->llsa_options);
427 ospf6_print_bits(ospf6_option_bits, ntohl(llsap->llsa_options));
428 TCHECK(llsap->llsa_nprefix);
429 printf(" pri %d lladdr %s npref %d", llsap->llsa_priority,
430 ip6addr_string(&llsap->llsa_lladdr),
431 (u_int32_t)ntohl(llsap->llsa_nprefix));
432 lsapp = llsap->llsa_prefix;
433 for (j = 0; j < ntohl(llsap->llsa_nprefix); j++) {
434 k = ospf6_print_lsaprefix(lsapp);
437 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
441 case LS_TYPE_INTRA_AP | LS_SCOPE_AREA:
442 /* Intra-Area-Prefix LSA */
443 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_rtid);
445 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_lstype),
446 &lsap->lsa_un.un_intra_ap.intra_ap_lsid,
447 &lsap->lsa_un.un_intra_ap.intra_ap_rtid,
449 TCHECK(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
451 ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix));
453 lsapp = lsap->lsa_un.un_intra_ap.intra_ap_prefix;
455 j < ntohs(lsap->lsa_un.un_intra_ap.intra_ap_nprefix);
457 k = ospf6_print_lsaprefix(lsapp);
460 lsapp = (struct lsa_prefix *)(((u_char *)lsapp) + k);
465 printf(" ??LinkStateType 0x%04x??",
466 ntohs(lsap->ls_hdr.ls_type));
478 ospf6_decode_v3(register const struct ospf6hdr *op,
479 register const u_char *dataend)
481 register const rtrid_t *ap;
482 register const struct lsr *lsrp;
483 register const struct lsa_hdr *lshp;
484 register const struct lsa *lsap;
488 switch (op->ospf6_type) {
492 * Rob Coltun's special monitoring packets;
497 case OSPF_TYPE_HELLO:
499 TCHECK(op->ospf6_hello.hello_deadint);
500 ospf6_print_bits(ospf6_option_bits,
501 ntohl(op->ospf6_hello.hello_options));
502 printf(" ifid %s pri %d int %d dead %u",
503 ipaddr_string(&op->ospf6_hello.hello_ifid),
504 op->ospf6_hello.hello_priority,
505 ntohs(op->ospf6_hello.hello_helloint),
506 ntohs(op->ospf6_hello.hello_deadint));
508 TCHECK(op->ospf6_hello.hello_dr);
509 if (op->ospf6_hello.hello_dr != 0)
511 ipaddr_string(&op->ospf6_hello.hello_dr));
512 TCHECK(op->ospf6_hello.hello_bdr);
513 if (op->ospf6_hello.hello_bdr != 0)
515 ipaddr_string(&op->ospf6_hello.hello_bdr));
518 ap = op->ospf6_hello.hello_neighbor;
519 while ((u_char *)ap < dataend) {
521 printf(" %s", ipaddr_string(ap));
528 TCHECK(op->ospf6_db.db_options);
529 ospf6_print_bits(ospf6_option_bits,
530 ntohl(op->ospf6_db.db_options));
532 TCHECK(op->ospf6_db.db_flags);
533 if (op->ospf6_db.db_flags & OSPF6_DB_INIT) {
537 if (op->ospf6_db.db_flags & OSPF6_DB_MORE) {
541 if (op->ospf6_db.db_flags & OSPF6_DB_MASTER) {
545 TCHECK(op->ospf6_db.db_seq);
546 printf(" mtu %u S %X", ntohs(op->ospf6_db.db_mtu),
547 (u_int32_t)ntohl(op->ospf6_db.db_seq));
550 /* Print all the LS adv's */
551 lshp = op->ospf6_db.db_lshdr;
553 while (!ospf6_print_lshdr(lshp)) {
563 lsrp = op->ospf6_lsr;
564 while ((u_char *)lsrp < dataend) {
566 printf(" {"); /* } (ctags) */
567 ospf6_print_ls_type(ntohs(lsrp->ls_type),
580 lsap = op->ospf6_lsu.lsu_lsa;
581 TCHECK(op->ospf6_lsu.lsu_count);
582 i = ntohl(op->ospf6_lsu.lsu_count);
584 if (ospf6_print_lsa(lsap))
586 lsap = (struct lsa *)((u_char *)lsap +
587 ntohs(lsap->ls_hdr.ls_length));
595 lshp = op->ospf6_lsa.lsa_lshdr;
597 while (!ospf6_print_lshdr(lshp)) {
606 printf("v3 type %d", op->ospf6_type);
615 ospf6_print(register const u_char *bp, register u_int length)
617 register const struct ospf6hdr *op;
618 register const u_char *dataend;
619 register const char *cp;
621 op = (struct ospf6hdr *)bp;
623 /* If the type is valid translate it, or just print the type */
624 /* value. If it's not valid, say so and return */
625 TCHECK(op->ospf6_type);
626 cp = tok2str(type2str, "type%d", op->ospf6_type);
627 printf(" OSPFv%d-%s %d:", op->ospf6_version, cp, length);
631 TCHECK(op->ospf6_len);
632 if (length != ntohs(op->ospf6_len)) {
633 printf(" [len %d]", ntohs(op->ospf6_len));
636 dataend = bp + length;
638 /* Print the routerid if it is not the same as the source */
639 TCHECK(op->ospf6_routerid);
640 printf(" rtrid %s", ipaddr_string(&op->ospf6_routerid));
642 TCHECK(op->ospf6_areaid);
643 if (op->ospf6_areaid != 0)
644 printf(" area %s", ipaddr_string(&op->ospf6_areaid));
647 TCHECK(op->ospf6_instanceid);
648 if (op->ospf6_instanceid)
649 printf(" instance %u", op->ospf6_instanceid);
651 /* Do rest according to version. */
652 switch (op->ospf6_version) {
656 if (ospf6_decode_v3(op, dataend))
661 printf(" ospf [version %d]", op->ospf6_version);
663 } /* end switch on version */