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renames vmcb->control.v_irq to virq_pending
[freebsd-src/fkvm-freebsd.git] / contrib / tcpdump / print-pim.c
blobd539809933a286b833dbbb29e173857684cf70ac
1 /*
2 * Copyright (c) 1995, 1996
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 * $FreeBSD$
22 */
23
24 #ifndef lint
25 static const char rcsid[] _U_ =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.45.2.4 2006/02/13 01:32:34 hannes Exp $ (LBL)";
27 #endif
28
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <tcpdump-stdinc.h>
34 #include "interface.h"
35
36 #define PIMV2_TYPE_HELLO 0
37 #define PIMV2_TYPE_REGISTER 1
38 #define PIMV2_TYPE_REGISTER_STOP 2
39 #define PIMV2_TYPE_JOIN_PRUNE 3
40 #define PIMV2_TYPE_BOOTSTRAP 4
41 #define PIMV2_TYPE_ASSERT 5
42 #define PIMV2_TYPE_GRAFT 6
43 #define PIMV2_TYPE_GRAFT_ACK 7
44 #define PIMV2_TYPE_CANDIDATE_RP 8
45 #define PIMV2_TYPE_PRUNE_REFRESH 9
46
47 static struct tok pimv2_type_values[] = {
48 { PIMV2_TYPE_HELLO, "Hello" },
49 { PIMV2_TYPE_REGISTER, "Register" },
50 { PIMV2_TYPE_REGISTER_STOP, "Register Stop" },
51 { PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" },
52 { PIMV2_TYPE_BOOTSTRAP, "Bootstrap" },
53 { PIMV2_TYPE_ASSERT, "Assert" },
54 { PIMV2_TYPE_GRAFT, "Graft" },
55 { PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" },
56 { PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" },
57 { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" },
58 { 0, NULL}
59 };
60
61 #define PIMV2_HELLO_OPTION_HOLDTIME 1
62 #define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2
63 #define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18
64 #define PIMV2_HELLO_OPTION_DR_PRIORITY 19
65 #define PIMV2_HELLO_OPTION_GENID 20
66 #define PIMV2_HELLO_OPTION_REFRESH_CAP 21
67 #define PIMV2_HELLO_OPTION_BIDIR_CAP 22
68 #define PIMV2_HELLO_OPTION_ADDRESS_LIST 24
69 #define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001
70
71 static struct tok pimv2_hello_option_values[] = {
72 { PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" },
73 { PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" },
74 { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" },
75 { PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" },
76 { PIMV2_HELLO_OPTION_GENID, "Generation ID" },
77 { PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" },
78 { PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" },
79 { PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" },
80 { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" },
81 { 0, NULL}
82 };
83
84 #define PIMV2_REGISTER_FLAG_LEN 4
85 #define PIMV2_REGISTER_FLAG_BORDER 0x80000000
86 #define PIMV2_REGISTER_FLAG_NULL 0x40000000
87
88 static struct tok pimv2_register_flag_values[] = {
89 { PIMV2_REGISTER_FLAG_BORDER, "Border" },
90 { PIMV2_REGISTER_FLAG_NULL, "Null" },
91 { 0, NULL}
92 };
93
94 /*
95 * XXX: We consider a case where IPv6 is not ready yet for portability,
96 * but PIM dependent defintions should be independent of IPv6...
97 */
98
99 struct pim {
100 u_int8_t pim_typever;
101 /* upper 4bit: PIM version number; 2 for PIMv2 */
102 /* lower 4bit: the PIM message type, currently they are:
103 * Hello, Register, Register-Stop, Join/Prune,
104 * Bootstrap, Assert, Graft (PIM-DM only),
105 * Graft-Ack (PIM-DM only), C-RP-Adv
106 */
107 #define PIM_VER(x) (((x) & 0xf0) >> 4)
108 #define PIM_TYPE(x) ((x) & 0x0f)
109 u_char pim_rsv; /* Reserved */
110 u_short pim_cksum; /* IP style check sum */
111 };
112
113
114 #include <stdio.h>
115 #include <stdlib.h>
116
117 #include "interface.h"
118 #include "addrtoname.h"
119 #include "extract.h"
120
121 #include "ip.h"
122
123 static void pimv2_print(register const u_char *bp, register u_int len);
124
125 static void
126 pimv1_join_prune_print(register const u_char *bp, register u_int len)
127 {
128 int maddrlen, addrlen, ngroups, njoin, nprune;
129 int njp;
130
131 /* If it's a single group and a single source, use 1-line output. */
132 if (TTEST2(bp[0], 30) && bp[11] == 1 &&
133 ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
134 int hold;
135
136 (void)printf(" RPF %s ", ipaddr_string(bp));
137 hold = EXTRACT_16BITS(&bp[6]);
138 if (hold != 180) {
139 (void)printf("Hold ");
140 relts_print(hold);
141 }
142 (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
143 ipaddr_string(&bp[26]), bp[25] & 0x3f,
144 ipaddr_string(&bp[12]));
145 if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
146 (void)printf("/%s", ipaddr_string(&bp[16]));
147 (void)printf(") %s%s %s",
148 (bp[24] & 0x01) ? "Sparse" : "Dense",
149 (bp[25] & 0x80) ? " WC" : "",
150 (bp[25] & 0x40) ? "RP" : "SPT");
151 return;
152 }
153
154 TCHECK2(bp[0], sizeof(struct in_addr));
155 if (vflag > 1)
156 (void)printf("\n");
157 (void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
158 TCHECK2(bp[6], 2);
159 if (vflag > 1)
160 (void)printf("\n");
161 (void)printf(" Hold time: ");
162 relts_print(EXTRACT_16BITS(&bp[6]));
163 if (vflag < 2)
164 return;
165 bp += 8;
166 len -= 8;
167
168 TCHECK2(bp[0], 4);
169 maddrlen = bp[1];
170 addrlen = bp[2];
171 ngroups = bp[3];
172 bp += 4;
173 len -= 4;
174 while (ngroups--) {
175 /*
176 * XXX - does the address have length "addrlen" and the
177 * mask length "maddrlen"?
178 */
179 TCHECK2(bp[0], sizeof(struct in_addr));
180 (void)printf("\n\tGroup: %s", ipaddr_string(bp));
181 TCHECK2(bp[4], sizeof(struct in_addr));
182 if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
183 (void)printf("/%s", ipaddr_string(&bp[4]));
184 TCHECK2(bp[8], 4);
185 njoin = EXTRACT_16BITS(&bp[8]);
186 nprune = EXTRACT_16BITS(&bp[10]);
187 (void)printf(" joined: %d pruned: %d", njoin, nprune);
188 bp += 12;
189 len -= 12;
190 for (njp = 0; njp < (njoin + nprune); njp++) {
191 const char *type;
192
193 if (njp < njoin)
194 type = "Join ";
195 else
196 type = "Prune";
197 TCHECK2(bp[0], 6);
198 (void)printf("\n\t%s %s%s%s%s/%d", type,
199 (bp[0] & 0x01) ? "Sparse " : "Dense ",
200 (bp[1] & 0x80) ? "WC " : "",
201 (bp[1] & 0x40) ? "RP " : "SPT ",
202 ipaddr_string(&bp[2]), bp[1] & 0x3f);
203 bp += 6;
204 len -= 6;
205 }
206 }
207 return;
208 trunc:
209 (void)printf("[|pim]");
210 return;
211 }
212
213 void
214 pimv1_print(register const u_char *bp, register u_int len)
215 {
216 register const u_char *ep;
217 register u_char type;
218
219 ep = (const u_char *)snapend;
220 if (bp >= ep)
221 return;
222
223 TCHECK(bp[1]);
224 type = bp[1];
225
226 switch (type) {
227 case 0:
228 (void)printf(" Query");
229 if (TTEST(bp[8])) {
230 switch (bp[8] >> 4) {
231 case 0:
232 (void)printf(" Dense-mode");
233 break;
234 case 1:
235 (void)printf(" Sparse-mode");
236 break;
237 case 2:
238 (void)printf(" Sparse-Dense-mode");
239 break;
240 default:
241 (void)printf(" mode-%d", bp[8] >> 4);
242 break;
243 }
244 }
245 if (vflag) {
246 TCHECK2(bp[10],2);
247 (void)printf(" (Hold-time ");
248 relts_print(EXTRACT_16BITS(&bp[10]));
249 (void)printf(")");
250 }
251 break;
252
253 case 1:
254 (void)printf(" Register");
255 TCHECK2(bp[8], 20); /* ip header */
256 (void)printf(" for %s > %s", ipaddr_string(&bp[20]),
257 ipaddr_string(&bp[24]));
258 break;
259 case 2:
260 (void)printf(" Register-Stop");
261 TCHECK2(bp[12], sizeof(struct in_addr));
262 (void)printf(" for %s > %s", ipaddr_string(&bp[8]),
263 ipaddr_string(&bp[12]));
264 break;
265 case 3:
266 (void)printf(" Join/Prune");
267 if (vflag)
268 pimv1_join_prune_print(&bp[8], len - 8);
269 break;
270 case 4:
271 (void)printf(" RP-reachable");
272 if (vflag) {
273 TCHECK2(bp[22], 2);
274 (void)printf(" group %s",
275 ipaddr_string(&bp[8]));
276 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
277 (void)printf("/%s", ipaddr_string(&bp[12]));
278 (void)printf(" RP %s hold ", ipaddr_string(&bp[16]));
279 relts_print(EXTRACT_16BITS(&bp[22]));
280 }
281 break;
282 case 5:
283 (void)printf(" Assert");
284 TCHECK2(bp[16], sizeof(struct in_addr));
285 (void)printf(" for %s > %s", ipaddr_string(&bp[16]),
286 ipaddr_string(&bp[8]));
287 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
288 (void)printf("/%s", ipaddr_string(&bp[12]));
289 TCHECK2(bp[24], 4);
290 (void)printf(" %s pref %d metric %d",
291 (bp[20] & 0x80) ? "RP-tree" : "SPT",
292 EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
293 EXTRACT_32BITS(&bp[24]));
294 break;
295 case 6:
296 (void)printf(" Graft");
297 if (vflag)
298 pimv1_join_prune_print(&bp[8], len - 8);
299 break;
300 case 7:
301 (void)printf(" Graft-ACK");
302 if (vflag)
303 pimv1_join_prune_print(&bp[8], len - 8);
304 break;
305 case 8:
306 (void)printf(" Mode");
307 break;
308 default:
309 (void)printf(" [type %d]", type);
310 break;
311 }
312 if ((bp[4] >> 4) != 1)
313 (void)printf(" [v%d]", bp[4] >> 4);
314 return;
315
316 trunc:
317 (void)printf("[|pim]");
318 return;
319 }
320
321 /*
322 * auto-RP is a cisco protocol, documented at
323 * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
324 *
325 * This implements version 1+, dated Sept 9, 1998.
326 */
327 void
328 cisco_autorp_print(register const u_char *bp, register u_int len)
329 {
330 int type;
331 int numrps;
332 int hold;
333
334 TCHECK(bp[0]);
335 (void)printf(" auto-rp ");
336 type = bp[0];
337 switch (type) {
338 case 0x11:
339 (void)printf("candidate-advert");
340 break;
341 case 0x12:
342 (void)printf("mapping");
343 break;
344 default:
345 (void)printf("type-0x%02x", type);
346 break;
347 }
348
349 TCHECK(bp[1]);
350 numrps = bp[1];
351
352 TCHECK2(bp[2], 2);
353 (void)printf(" Hold ");
354 hold = EXTRACT_16BITS(&bp[2]);
355 if (hold)
356 relts_print(EXTRACT_16BITS(&bp[2]));
357 else
358 printf("FOREVER");
359
360 /* Next 4 bytes are reserved. */
361
362 bp += 8; len -= 8;
363
364 /*XXX skip unless -v? */
365
366 /*
367 * Rest of packet:
368 * numrps entries of the form:
369 * 32 bits: RP
370 * 6 bits: reserved
371 * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
372 * 8 bits: # of entries for this RP
373 * each entry: 7 bits: reserved, 1 bit: negative,
374 * 8 bits: mask 32 bits: source
375 * lather, rinse, repeat.
376 */
377 while (numrps--) {
378 int nentries;
379 char s;
380
381 TCHECK2(bp[0], 4);
382 (void)printf(" RP %s", ipaddr_string(bp));
383 TCHECK(bp[4]);
384 switch (bp[4] & 0x3) {
385 case 0: printf(" PIMv?");
386 break;
387 case 1: printf(" PIMv1");
388 break;
389 case 2: printf(" PIMv2");
390 break;
391 case 3: printf(" PIMv1+2");
392 break;
393 }
394 if (bp[4] & 0xfc)
395 (void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc);
396 TCHECK(bp[5]);
397 nentries = bp[5];
398 bp += 6; len -= 6;
399 s = ' ';
400 for (; nentries; nentries--) {
401 TCHECK2(bp[0], 6);
402 (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
403 ipaddr_string(&bp[2]), bp[1]);
404 if (bp[0] & 0xfe)
405 (void)printf("[rsvd=0x%02x]", bp[0] & 0xfe);
406 s = ',';
407 bp += 6; len -= 6;
408 }
409 }
410 return;
411
412 trunc:
413 (void)printf("[|autorp]");
414 return;
415 }
416
417 void
418 pim_print(register const u_char *bp, register u_int len)
419 {
420 register const u_char *ep;
421 register struct pim *pim = (struct pim *)bp;
422
423 ep = (const u_char *)snapend;
424 if (bp >= ep)
425 return;
426 #ifdef notyet /* currently we see only version and type */
427 TCHECK(pim->pim_rsv);
428 #endif
429
430 switch (PIM_VER(pim->pim_typever)) {
431 case 2:
432 if (!vflag) {
433 printf("PIMv%u, %s, length %u",
434 PIM_VER(pim->pim_typever),
435 tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)),
436 len);
437 return;
438 } else {
439 printf("PIMv%u, length %u\n\t%s",
440 PIM_VER(pim->pim_typever),
441 len,
442 tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)));
443 pimv2_print(bp, len);
444 }
445 break;
446 default:
447 printf("PIMv%u, length %u",
448 PIM_VER(pim->pim_typever),
449 len);
450 break;
451 }
452 return;
453 }
454
455 /*
456 * PIMv2 uses encoded address representations.
457 *
458 * The last PIM-SM I-D before RFC2117 was published specified the
459 * following representation for unicast addresses. However, RFC2117
460 * specified no encoding for unicast addresses with the unicast
461 * address length specified in the header. Therefore, we have to
462 * guess which encoding is being used (Cisco's PIMv2 implementation
463 * uses the non-RFC encoding). RFC2117 turns a previously "Reserved"
464 * field into a 'unicast-address-length-in-bytes' field. We guess
465 * that it's the draft encoding if this reserved field is zero.
466 *
467 * RFC2362 goes back to the encoded format, and calls the addr length
468 * field "reserved" again.
469 *
470 * The first byte is the address family, from:
471 *
472 * 0 Reserved
473 * 1 IP (IP version 4)
474 * 2 IP6 (IP version 6)
475 * 3 NSAP
476 * 4 HDLC (8-bit multidrop)
477 * 5 BBN 1822
478 * 6 802 (includes all 802 media plus Ethernet "canonical format")
479 * 7 E.163
480 * 8 E.164 (SMDS, Frame Relay, ATM)
481 * 9 F.69 (Telex)
482 * 10 X.121 (X.25, Frame Relay)
483 * 11 IPX
484 * 12 Appletalk
485 * 13 Decnet IV
486 * 14 Banyan Vines
487 * 15 E.164 with NSAP format subaddress
488 *
489 * In addition, the second byte is an "Encoding". 0 is the default
490 * encoding for the address family, and no other encodings are currently
491 * specified.
492 *
493 */
494
495 static int pimv2_addr_len;
496
497 enum pimv2_addrtype {
498 pimv2_unicast, pimv2_group, pimv2_source
499 };
500
501 /* 0 1 2 3
502 * 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
503 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
504 * | Addr Family | Encoding Type | Unicast Address |
505 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
506 * 0 1 2 3
507 * 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
508 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
509 * | Addr Family | Encoding Type | Reserved | Mask Len |
510 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
511 * | Group multicast Address |
512 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
513 * 0 1 2 3
514 * 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
515 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
516 * | Addr Family | Encoding Type | Rsrvd |S|W|R| Mask Len |
517 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
518 * | Source Address |
519 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
520 */
521 static int
522 pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
523 {
524 int af;
525 int len, hdrlen;
526
527 TCHECK(bp[0]);
528
529 if (pimv2_addr_len == 0) {
530 TCHECK(bp[1]);
531 switch (bp[0]) {
532 case 1:
533 af = AF_INET;
534 len = sizeof(struct in_addr);
535 break;
536 #ifdef INET6
537 case 2:
538 af = AF_INET6;
539 len = sizeof(struct in6_addr);
540 break;
541 #endif
542 default:
543 return -1;
544 }
545 if (bp[1] != 0)
546 return -1;
547 hdrlen = 2;
548 } else {
549 switch (pimv2_addr_len) {
550 case sizeof(struct in_addr):
551 af = AF_INET;
552 break;
553 #ifdef INET6
554 case sizeof(struct in6_addr):
555 af = AF_INET6;
556 break;
557 #endif
558 default:
559 return -1;
560 break;
561 }
562 len = pimv2_addr_len;
563 hdrlen = 0;
564 }
565
566 bp += hdrlen;
567 switch (at) {
568 case pimv2_unicast:
569 TCHECK2(bp[0], len);
570 if (af == AF_INET) {
571 if (!silent)
572 (void)printf("%s", ipaddr_string(bp));
573 }
574 #ifdef INET6
575 else if (af == AF_INET6) {
576 if (!silent)
577 (void)printf("%s", ip6addr_string(bp));
578 }
579 #endif
580 return hdrlen + len;
581 case pimv2_group:
582 case pimv2_source:
583 TCHECK2(bp[0], len + 2);
584 if (af == AF_INET) {
585 if (!silent) {
586 (void)printf("%s", ipaddr_string(bp + 2));
587 if (bp[1] != 32)
588 (void)printf("/%u", bp[1]);
589 }
590 }
591 #ifdef INET6
592 else if (af == AF_INET6) {
593 if (!silent) {
594 (void)printf("%s", ip6addr_string(bp + 2));
595 if (bp[1] != 128)
596 (void)printf("/%u", bp[1]);
597 }
598 }
599 #endif
600 if (bp[0] && !silent) {
601 if (at == pimv2_group) {
602 (void)printf("(0x%02x)", bp[0]);
603 } else {
604 (void)printf("(%s%s%s",
605 bp[0] & 0x04 ? "S" : "",
606 bp[0] & 0x02 ? "W" : "",
607 bp[0] & 0x01 ? "R" : "");
608 if (bp[0] & 0xf8) {
609 (void) printf("+0x%02x", bp[0] & 0xf8);
610 }
611 (void)printf(")");
612 }
613 }
614 return hdrlen + 2 + len;
615 default:
616 return -1;
617 }
618 trunc:
619 return -1;
620 }
621
622 static void
623 pimv2_print(register const u_char *bp, register u_int len)
624 {
625 register const u_char *ep;
626 register struct pim *pim = (struct pim *)bp;
627 int advance;
628
629 ep = (const u_char *)snapend;
630 if (bp >= ep)
631 return;
632 if (ep > bp + len)
633 ep = bp + len;
634 TCHECK(pim->pim_rsv);
635 pimv2_addr_len = pim->pim_rsv;
636 if (pimv2_addr_len != 0)
637 (void)printf(", RFC2117-encoding");
638
639 printf(", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum));
640 if (EXTRACT_16BITS(&pim->pim_cksum) == 0) {
641 printf("(unverified)");
642 } else {
643 printf("(%scorrect)",
644 TTEST2(bp[0], len) &&
645 in_cksum((const u_short*)bp, len, 0) ? "in" : "" );
646 }
647
648 switch (PIM_TYPE(pim->pim_typever)) {
649 case PIMV2_TYPE_HELLO:
650 {
651 u_int16_t otype, olen;
652 bp += 4;
653 while (bp < ep) {
654 TCHECK2(bp[0], 4);
655 otype = EXTRACT_16BITS(&bp[0]);
656 olen = EXTRACT_16BITS(&bp[2]);
657 TCHECK2(bp[0], 4 + olen);
658
659 printf("\n\t %s Option (%u), length %u, Value: ",
660 tok2str( pimv2_hello_option_values,"Unknown",otype),
661 otype,
662 olen);
663 bp += 4;
664
665 switch (otype) {
666 case PIMV2_HELLO_OPTION_HOLDTIME:
667 relts_print(EXTRACT_16BITS(bp));
668 break;
669
670 case PIMV2_HELLO_OPTION_LANPRUNEDELAY:
671 if (olen != 4) {
672 (void)printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
673 } else {
674 char t_bit;
675 u_int16_t lan_delay, override_interval;
676 lan_delay = EXTRACT_16BITS(bp);
677 override_interval = EXTRACT_16BITS(bp+2);
678 t_bit = (lan_delay & 0x8000)? 1 : 0;
679 lan_delay &= ~0x8000;
680 (void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms",
681 t_bit, lan_delay, override_interval);
682 }
683 break;
684
685 case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD:
686 case PIMV2_HELLO_OPTION_DR_PRIORITY:
687 switch (olen) {
688 case 0:
689 printf("Bi-Directional Capability (Old)");
690 break;
691 case 4:
692 printf("%u", EXTRACT_32BITS(bp));
693 break;
694 default:
695 printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
696 break;
697 }
698 break;
699
700 case PIMV2_HELLO_OPTION_GENID:
701 (void)printf("0x%08x", EXTRACT_32BITS(bp));
702 break;
703
704 case PIMV2_HELLO_OPTION_REFRESH_CAP:
705 (void)printf("v%d", *bp);
706 if (*(bp+1) != 0) {
707 (void)printf(", interval ");
708 relts_print(*(bp+1));
709 }
710 if (EXTRACT_16BITS(bp+2) != 0) {
711 (void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2));
712 }
713 break;
714
715 case PIMV2_HELLO_OPTION_BIDIR_CAP:
716 break;
717
718 case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD:
719 case PIMV2_HELLO_OPTION_ADDRESS_LIST:
720 if (vflag > 1) {
721 const u_char *ptr = bp;
722 while (ptr < (bp+olen)) {
723 int advance;
724
725 printf("\n\t ");
726 advance = pimv2_addr_print(ptr, pimv2_unicast, 0);
727 if (advance < 0) {
728 printf("...");
729 break;
730 }
731 ptr += advance;
732 }
733 }
734 break;
735 default:
736 if (vflag <= 1)
737 print_unknown_data(bp,"\n\t ",olen);
738 break;
739 }
740 /* do we want to see an additionally hexdump ? */
741 if (vflag> 1)
742 print_unknown_data(bp,"\n\t ",olen);
743 bp += olen;
744 }
745 break;
746 }
747
748 case PIMV2_TYPE_REGISTER:
749 {
750 struct ip *ip;
751
752 if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN))
753 goto trunc;
754
755 printf(", Flags [ %s ]\n\t",
756 tok2str(pimv2_register_flag_values,
757 "none",
758 EXTRACT_32BITS(bp+4)));
759
760 bp += 8; len -= 8;
761 /* encapsulated multicast packet */
762 ip = (struct ip *)bp;
763 switch (IP_V(ip)) {
764 case 0: /* Null header */
765 (void)printf("IP-Null-header %s > %s",
766 ipaddr_string(&ip->ip_src),
767 ipaddr_string(&ip->ip_dst));
768 break;
769
770 case 4: /* IPv4 */
771 ip_print(gndo, bp, len);
772 break;
773 #ifdef INET6
774 case 6: /* IPv6 */
775 ip6_print(bp, len);
776 break;
777 #endif
778 default:
779 (void)printf("IP ver %d", IP_V(ip));
780 break;
781 }
782 break;
783 }
784
785 case PIMV2_TYPE_REGISTER_STOP:
786 bp += 4; len -= 4;
787 if (bp >= ep)
788 break;
789 (void)printf(" group=");
790 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
791 (void)printf("...");
792 break;
793 }
794 bp += advance; len -= advance;
795 if (bp >= ep)
796 break;
797 (void)printf(" source=");
798 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
799 (void)printf("...");
800 break;
801 }
802 bp += advance; len -= advance;
803 break;
804
805 case PIMV2_TYPE_JOIN_PRUNE:
806 case PIMV2_TYPE_GRAFT:
807 case PIMV2_TYPE_GRAFT_ACK:
808
809
810 /*
811 * 0 1 2 3
812 * 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
813 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
814 * |PIM Ver| Type | Addr length | Checksum |
815 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
816 * | Unicast-Upstream Neighbor Address |
817 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
818 * | Reserved | Num groups | Holdtime |
819 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
820 * | Encoded-Multicast Group Address-1 |
821 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
822 * | Number of Joined Sources | Number of Pruned Sources |
823 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
824 * | Encoded-Joined Source Address-1 |
825 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
826 * | . |
827 * | . |
828 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
829 * | Encoded-Joined Source Address-n |
830 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
831 * | Encoded-Pruned Source Address-1 |
832 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
833 * | . |
834 * | . |
835 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
836 * | Encoded-Pruned Source Address-n |
837 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
838 * | . |
839 * | . |
840 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
841 * | Encoded-Multicast Group Address-n |
842 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
843 */
844
845 {
846 u_int8_t ngroup;
847 u_int16_t holdtime;
848 u_int16_t njoin;
849 u_int16_t nprune;
850 int i, j;
851
852 bp += 4; len -= 4;
853 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
854 if (bp >= ep)
855 break;
856 (void)printf(", upstream-neighbor: ");
857 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
858 (void)printf("...");
859 break;
860 }
861 bp += advance; len -= advance;
862 }
863 if (bp + 4 > ep)
864 break;
865 ngroup = bp[1];
866 holdtime = EXTRACT_16BITS(&bp[2]);
867 (void)printf("\n\t %u group(s)", ngroup);
868 if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
869 (void)printf(", holdtime: ");
870 if (holdtime == 0xffff)
871 (void)printf("infinite");
872 else
873 relts_print(holdtime);
874 }
875 bp += 4; len -= 4;
876 for (i = 0; i < ngroup; i++) {
877 if (bp >= ep)
878 goto jp_done;
879 (void)printf("\n\t group #%u: ", i+1);
880 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
881 (void)printf("...)");
882 goto jp_done;
883 }
884 bp += advance; len -= advance;
885 if (bp + 4 > ep) {
886 (void)printf("...)");
887 goto jp_done;
888 }
889 njoin = EXTRACT_16BITS(&bp[0]);
890 nprune = EXTRACT_16BITS(&bp[2]);
891 (void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune);
892 bp += 4; len -= 4;
893 for (j = 0; j < njoin; j++) {
894 (void)printf("\n\t joined source #%u: ",j+1);
895 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
896 (void)printf("...)");
897 goto jp_done;
898 }
899 bp += advance; len -= advance;
900 }
901 for (j = 0; j < nprune; j++) {
902 (void)printf("\n\t pruned source #%u: ",j+1);
903 if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
904 (void)printf("...)");
905 goto jp_done;
906 }
907 bp += advance; len -= advance;
908 }
909 }
910 jp_done:
911 break;
912 }
913
914 case PIMV2_TYPE_BOOTSTRAP:
915 {
916 int i, j, frpcnt;
917 bp += 4;
918
919 /* Fragment Tag, Hash Mask len, and BSR-priority */
920 if (bp + sizeof(u_int16_t) >= ep) break;
921 (void)printf(" tag=%x", EXTRACT_16BITS(bp));
922 bp += sizeof(u_int16_t);
923 if (bp >= ep) break;
924 (void)printf(" hashmlen=%d", bp[0]);
925 if (bp + 1 >= ep) break;
926 (void)printf(" BSRprio=%d", bp[1]);
927 bp += 2;
928
929 /* Encoded-Unicast-BSR-Address */
930 if (bp >= ep) break;
931 (void)printf(" BSR=");
932 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
933 (void)printf("...");
934 break;
935 }
936 bp += advance;
937
938 for (i = 0; bp < ep; i++) {
939 /* Encoded-Group Address */
940 (void)printf(" (group%d: ", i);
941 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
942 < 0) {
943 (void)printf("...)");
944 goto bs_done;
945 }
946 bp += advance;
947
948 /* RP-Count, Frag RP-Cnt, and rsvd */
949 if (bp >= ep) {
950 (void)printf("...)");
951 goto bs_done;
952 }
953 (void)printf(" RPcnt=%d", bp[0]);
954 if (bp + 1 >= ep) {
955 (void)printf("...)");
956 goto bs_done;
957 }
958 (void)printf(" FRPcnt=%d", frpcnt = bp[1]);
959 bp += 4;
960
961 for (j = 0; j < frpcnt && bp < ep; j++) {
962 /* each RP info */
963 (void)printf(" RP%d=", j);
964 if ((advance = pimv2_addr_print(bp,
965 pimv2_unicast,
966 0)) < 0) {
967 (void)printf("...)");
968 goto bs_done;
969 }
970 bp += advance;
971
972 if (bp + 1 >= ep) {
973 (void)printf("...)");
974 goto bs_done;
975 }
976 (void)printf(",holdtime=");
977 relts_print(EXTRACT_16BITS(bp));
978 if (bp + 2 >= ep) {
979 (void)printf("...)");
980 goto bs_done;
981 }
982 (void)printf(",prio=%d", bp[2]);
983 bp += 4;
984 }
985 (void)printf(")");
986 }
987 bs_done:
988 break;
989 }
990 case PIMV2_TYPE_ASSERT:
991 bp += 4; len -= 4;
992 if (bp >= ep)
993 break;
994 (void)printf(" group=");
995 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
996 (void)printf("...");
997 break;
998 }
999 bp += advance; len -= advance;
1000 if (bp >= ep)
1001 break;
1002 (void)printf(" src=");
1003 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1004 (void)printf("...");
1005 break;
1006 }
1007 bp += advance; len -= advance;
1008 if (bp + 8 > ep)
1009 break;
1010 if (bp[0] & 0x80)
1011 (void)printf(" RPT");
1012 (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
1013 (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
1014 break;
1015
1016 case PIMV2_TYPE_CANDIDATE_RP:
1017 {
1018 int i, pfxcnt;
1019 bp += 4;
1020
1021 /* Prefix-Cnt, Priority, and Holdtime */
1022 if (bp >= ep) break;
1023 (void)printf(" prefix-cnt=%d", bp[0]);
1024 pfxcnt = bp[0];
1025 if (bp + 1 >= ep) break;
1026 (void)printf(" prio=%d", bp[1]);
1027 if (bp + 3 >= ep) break;
1028 (void)printf(" holdtime=");
1029 relts_print(EXTRACT_16BITS(&bp[2]));
1030 bp += 4;
1031
1032 /* Encoded-Unicast-RP-Address */
1033 if (bp >= ep) break;
1034 (void)printf(" RP=");
1035 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1036 (void)printf("...");
1037 break;
1038 }
1039 bp += advance;
1040
1041 /* Encoded-Group Addresses */
1042 for (i = 0; i < pfxcnt && bp < ep; i++) {
1043 (void)printf(" Group%d=", i);
1044 if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
1045 < 0) {
1046 (void)printf("...");
1047 break;
1048 }
1049 bp += advance;
1050 }
1051 break;
1052 }
1053
1054 case PIMV2_TYPE_PRUNE_REFRESH:
1055 (void)printf(" src=");
1056 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1057 (void)printf("...");
1058 break;
1059 }
1060 bp += advance;
1061 (void)printf(" grp=");
1062 if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
1063 (void)printf("...");
1064 break;
1065 }
1066 bp += advance;
1067 (void)printf(" forwarder=");
1068 if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
1069 (void)printf("...");
1070 break;
1071 }
1072 bp += advance;
1073 TCHECK2(bp[0], 2);
1074 (void)printf(" TUNR ");
1075 relts_print(EXTRACT_16BITS(bp));
1076 break;
1077
1078
1079 default:
1080 (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
1081 break;
1082 }
1083
1084 return;
1085
1086 trunc:
1087 (void)printf("[|pim]");
1088 }
1089
1090 /*
1091 * Local Variables:
1092 * c-style: whitesmith
1093 * c-basic-offset: 8
1094 * End:
1095 */
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