xref: /freebsd/usr.bin/netstat/inet6.c (revision 04c9749ff0148ec8f73b150cec8bc2c094a5d31a)
1 /*	BSDI inet.c,v 2.3 1995/10/24 02:19:29 prb Exp	*/
2 /*
3  * Copyright (c) 1983, 1988, 1993
4  *	The Regents of the University of California.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the following acknowledgement:
16  *	This product includes software developed by the University of
17  *	California, Berkeley and its contributors.
18  * 4. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  * $FreeBSD$
35  */
36 
37 #ifndef lint
38 /*
39 static char sccsid[] = "@(#)inet6.c	8.4 (Berkeley) 4/20/94";
40 */
41 #endif /* not lint */
42 
43 #ifdef INET6
44 #include <sys/param.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/ioctl.h>
48 #include <sys/mbuf.h>
49 #include <sys/protosw.h>
50 
51 #include <net/route.h>
52 #include <net/if.h>
53 #include <net/if_var.h>
54 #include <netinet/in.h>
55 #include <netinet/ip6.h>
56 #include <netinet/icmp6.h>
57 #include <netinet/in_systm.h>
58 #include <netinet6/in6_pcb.h>
59 #include <netinet6/in6_var.h>
60 #include <netinet6/ip6_var.h>
61 #include <netinet6/pim6_var.h>
62 
63 #include <arpa/inet.h>
64 #include <netdb.h>
65 
66 #include <stdio.h>
67 #include <string.h>
68 #include <unistd.h>
69 #include "netstat.h"
70 
71 struct	socket sockb;
72 
73 char	*inet6name __P((struct in6_addr *));
74 void	inet6print __P((struct in6_addr *, int, char *, int));
75 
76 static char ntop_buf[INET6_ADDRSTRLEN];
77 
78 static	char *ip6nh[] = {
79 	"hop by hop",
80 	"ICMP",
81 	"IGMP",
82 	"#3",
83 	"IP",
84 	"#5",
85 	"TCP",
86 	"#7",
87 	"#8",
88 	"#9",
89 	"#10",
90 	"#11",
91 	"#12",
92 	"#13",
93 	"#14",
94 	"#15",
95 	"#16",
96 	"UDP",
97 	"#18",
98 	"#19",
99 	"#20",
100 	"#21",
101 	"IDP",
102 	"#23",
103 	"#24",
104 	"#25",
105 	"#26",
106 	"#27",
107 	"#28",
108 	"TP",
109 	"#30",
110 	"#31",
111 	"#32",
112 	"#33",
113 	"#34",
114 	"#35",
115 	"#36",
116 	"#37",
117 	"#38",
118 	"#39",
119 	"#40",
120 	"IP6",
121 	"#42",
122 	"routing",
123 	"fragment",
124 	"#45",
125 	"#46",
126 	"#47",
127 	"#48",
128 	"#49",
129 	"ESP",
130 	"AH",
131 	"#52",
132 	"#53",
133 	"#54",
134 	"#55",
135 	"#56",
136 	"#57",
137 	"ICMP6",
138 	"no next header",
139 	"destination option",
140 	"#61",
141 	"#62",
142 	"#63",
143 	"#64",
144 	"#65",
145 	"#66",
146 	"#67",
147 	"#68",
148 	"#69",
149 	"#70",
150 	"#71",
151 	"#72",
152 	"#73",
153 	"#74",
154 	"#75",
155 	"#76",
156 	"#77",
157 	"#78",
158 	"#79",
159 	"ISOIP",
160 	"#81",
161 	"#82",
162 	"#83",
163 	"#84",
164 	"#85",
165 	"#86",
166 	"#87",
167 	"#88",
168 	"OSPF",
169 	"#80",
170 	"#91",
171 	"#92",
172 	"#93",
173 	"#94",
174 	"#95",
175 	"#96",
176 	"Ethernet",
177 	"#98",
178 	"#99",
179 	"#100",
180 	"#101",
181 	"#102",
182 	"PIM",
183 	"#104",
184 	"#105",
185 	"#106",
186 	"#107",
187 	"#108",
188 	"#109",
189 	"#110",
190 	"#111",
191 	"#112",
192 	"#113",
193 	"#114",
194 	"#115",
195 	"#116",
196 	"#117",
197 	"#118",
198 	"#119",
199 	"#120",
200 	"#121",
201 	"#122",
202 	"#123",
203 	"#124",
204 	"#125",
205 	"#126",
206 	"#127",
207 	"#128",
208 	"#129",
209 	"#130",
210 	"#131",
211 	"#132",
212 	"#133",
213 	"#134",
214 	"#135",
215 	"#136",
216 	"#137",
217 	"#138",
218 	"#139",
219 	"#140",
220 	"#141",
221 	"#142",
222 	"#143",
223 	"#144",
224 	"#145",
225 	"#146",
226 	"#147",
227 	"#148",
228 	"#149",
229 	"#150",
230 	"#151",
231 	"#152",
232 	"#153",
233 	"#154",
234 	"#155",
235 	"#156",
236 	"#157",
237 	"#158",
238 	"#159",
239 	"#160",
240 	"#161",
241 	"#162",
242 	"#163",
243 	"#164",
244 	"#165",
245 	"#166",
246 	"#167",
247 	"#168",
248 	"#169",
249 	"#170",
250 	"#171",
251 	"#172",
252 	"#173",
253 	"#174",
254 	"#175",
255 	"#176",
256 	"#177",
257 	"#178",
258 	"#179",
259 	"#180",
260 	"#181",
261 	"#182",
262 	"#183",
263 	"#184",
264 	"#185",
265 	"#186",
266 	"#187",
267 	"#188",
268 	"#189",
269 	"#180",
270 	"#191",
271 	"#192",
272 	"#193",
273 	"#194",
274 	"#195",
275 	"#196",
276 	"#197",
277 	"#198",
278 	"#199",
279 	"#200",
280 	"#201",
281 	"#202",
282 	"#203",
283 	"#204",
284 	"#205",
285 	"#206",
286 	"#207",
287 	"#208",
288 	"#209",
289 	"#210",
290 	"#211",
291 	"#212",
292 	"#213",
293 	"#214",
294 	"#215",
295 	"#216",
296 	"#217",
297 	"#218",
298 	"#219",
299 	"#220",
300 	"#221",
301 	"#222",
302 	"#223",
303 	"#224",
304 	"#225",
305 	"#226",
306 	"#227",
307 	"#228",
308 	"#229",
309 	"#230",
310 	"#231",
311 	"#232",
312 	"#233",
313 	"#234",
314 	"#235",
315 	"#236",
316 	"#237",
317 	"#238",
318 	"#239",
319 	"#240",
320 	"#241",
321 	"#242",
322 	"#243",
323 	"#244",
324 	"#245",
325 	"#246",
326 	"#247",
327 	"#248",
328 	"#249",
329 	"#250",
330 	"#251",
331 	"#252",
332 	"#253",
333 	"#254",
334 	"#255",
335 };
336 
337 /*
338  * Dump IP6 statistics structure.
339  */
340 void
341 ip6_stats(off, name)
342 	u_long off;
343 	char *name;
344 {
345 	struct ip6stat ip6stat;
346 	int first, i;
347 
348 	if (off == 0)
349 		return;
350 
351 	kread(off, (char *)&ip6stat, sizeof (ip6stat));
352 	printf("%s:\n", name);
353 
354 #define	p(f, m) if (ip6stat.f || sflag <= 1) \
355     printf(m, (unsigned long long)ip6stat.f, plural(ip6stat.f))
356 #define	p1a(f, m) if (ip6stat.f || sflag <= 1) \
357     printf(m, (unsigned long long)ip6stat.f)
358 
359 	p(ip6s_total, "\t%llu total packet%s received\n");
360 	p1a(ip6s_toosmall, "\t%llu with size smaller than minimum\n");
361 	p1a(ip6s_tooshort, "\t%llu with data size < data length\n");
362 	p1a(ip6s_badoptions, "\t%llu with bad options\n");
363 	p1a(ip6s_badvers, "\t%llu with incorrect version number\n");
364 	p(ip6s_fragments, "\t%llu fragment%s received\n");
365 	p(ip6s_fragdropped, "\t%llu fragment%s dropped (dup or out of space)\n");
366 	p(ip6s_fragtimeout, "\t%llu fragment%s dropped after timeout\n");
367 	p(ip6s_fragoverflow, "\t%llu fragment%s that exceeded limit\n");
368 	p(ip6s_reassembled, "\t%llu packet%s reassembled ok\n");
369 	p(ip6s_delivered, "\t%llu packet%s for this host\n");
370 	p(ip6s_forward, "\t%llu packet%s forwarded\n");
371 	p(ip6s_cantforward, "\t%llu packet%s not forwardable\n");
372 	p(ip6s_redirectsent, "\t%llu redirect%s sent\n");
373 	p(ip6s_localout, "\t%llu packet%s sent from this host\n");
374 	p(ip6s_rawout, "\t%llu packet%s sent with fabricated ip header\n");
375 	p(ip6s_odropped, "\t%llu output packet%s dropped due to no bufs, etc.\n");
376 	p(ip6s_noroute, "\t%llu output packet%s discarded due to no route\n");
377 	p(ip6s_fragmented, "\t%llu output datagram%s fragmented\n");
378 	p(ip6s_ofragments, "\t%llu fragment%s created\n");
379 	p(ip6s_cantfrag, "\t%llu datagram%s that can't be fragmented\n");
380 	p(ip6s_badscope, "\t%llu packet%s that violated scope rules\n");
381 	p(ip6s_notmember, "\t%llu multicast packet%s which we don't join\n");
382 	for (first = 1, i = 0; i < 256; i++)
383 		if (ip6stat.ip6s_nxthist[i] != 0) {
384 			if (first) {
385 				printf("\tInput histogram:\n");
386 				first = 0;
387 			}
388 			printf("\t\t%s: %llu\n", ip6nh[i],
389 			    (unsigned long long)ip6stat.ip6s_nxthist[i]);
390 		}
391 	printf("\tMbuf statistics:\n");
392 	printf("\t\t%llu one mbuf\n", (unsigned long long)ip6stat.ip6s_m1);
393 	for (first = 1, i = 0; i < 32; i++) {
394 		char ifbuf[IFNAMSIZ];
395 		if (ip6stat.ip6s_m2m[i] != 0) {
396 			if (first) {
397 				printf("\t\ttwo or more mbuf:\n");
398 				first = 0;
399 			}
400 			printf("\t\t\t%s= %llu\n",
401 			    if_indextoname(i, ifbuf),
402 			    (unsigned long long)ip6stat.ip6s_m2m[i]);
403 		}
404 	}
405 	printf("\t\t%llu one ext mbuf\n",
406 	    (unsigned long long)ip6stat.ip6s_mext1);
407 	printf("\t\t%llu two or more ext mbuf\n",
408 	    (unsigned long long)ip6stat.ip6s_mext2m);
409 	p(ip6s_exthdrtoolong,
410 	    "\t%llu packet%s whose headers are not continuous\n");
411 	p(ip6s_nogif, "\t%llu tunneling packet%s that can't find gif\n");
412 	p(ip6s_toomanyhdr,
413 	    "\t%llu packet%s discarded due to too may headers\n");
414 
415 	/* for debugging source address selection */
416 #define PRINT_SCOPESTAT(s,i) do {\
417 		switch(i) { /* XXX hardcoding in each case */\
418 		case 1:\
419 			p(s, "\t\t%llu node-local%s\n");\
420 			break;\
421 		case 2:\
422 			p(s,"\t\t%llu link-local%s\n");\
423 			break;\
424 		case 5:\
425 			p(s,"\t\t%llu site-local%s\n");\
426 			break;\
427 		case 14:\
428 			p(s,"\t\t%llu global%s\n");\
429 			break;\
430 		default:\
431 			printf("\t\t%llu addresses scope=%x\n",\
432 			    (unsigned long long)ip6stat.s, i);\
433 		}\
434 	} while (0);
435 
436 	p(ip6s_sources_none,
437 	  "\t%llu failure%s of source address selection\n");
438 	for (first = 1, i = 0; i < 16; i++) {
439 		if (ip6stat.ip6s_sources_sameif[i]) {
440 			if (first) {
441 				printf("\tsource addresses on an outgoing I/F\n");
442 				first = 0;
443 			}
444 			PRINT_SCOPESTAT(ip6s_sources_sameif[i], i);
445 		}
446 	}
447 	for (first = 1, i = 0; i < 16; i++) {
448 		if (ip6stat.ip6s_sources_otherif[i]) {
449 			if (first) {
450 				printf("\tsource addresses on a non-outgoing I/F\n");
451 				first = 0;
452 			}
453 			PRINT_SCOPESTAT(ip6s_sources_otherif[i], i);
454 		}
455 	}
456 	for (first = 1, i = 0; i < 16; i++) {
457 		if (ip6stat.ip6s_sources_samescope[i]) {
458 			if (first) {
459 				printf("\tsource addresses of same scope\n");
460 				first = 0;
461 			}
462 			PRINT_SCOPESTAT(ip6s_sources_samescope[i], i);
463 		}
464 	}
465 	for (first = 1, i = 0; i < 16; i++) {
466 		if (ip6stat.ip6s_sources_otherscope[i]) {
467 			if (first) {
468 				printf("\tsource addresses of a different scope\n");
469 				first = 0;
470 			}
471 			PRINT_SCOPESTAT(ip6s_sources_otherscope[i], i);
472 		}
473 	}
474 	for (first = 1, i = 0; i < 16; i++) {
475 		if (ip6stat.ip6s_sources_deprecated[i]) {
476 			if (first) {
477 				printf("\tdeprecated source addresses\n");
478 				first = 0;
479 			}
480 			PRINT_SCOPESTAT(ip6s_sources_deprecated[i], i);
481 		}
482 	}
483 
484 	p1a(ip6s_forward_cachehit, "\t%llu forward cache hit\n");
485 	p1a(ip6s_forward_cachemiss, "\t%llu forward cache miss\n");
486 #undef p
487 #undef p1a
488 }
489 
490 /*
491  * Dump IPv6 per-interface statistics based on RFC 2465.
492  */
493 void
494 ip6_ifstats(ifname)
495 	char *ifname;
496 {
497 	struct in6_ifreq ifr;
498 	int s;
499 #define	p(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
500     printf(m, (unsigned long long)ifr.ifr_ifru.ifru_stat.f, plural(ifr.ifr_ifru.ifru_stat.f))
501 #define	p_5(f, m) if (ifr.ifr_ifru.ifru_stat.f || sflag <= 1) \
502     printf(m, (unsigned long long)ip6stat.f)
503 
504 	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
505 		perror("Warning: socket(AF_INET6)");
506 		return;
507 	}
508 
509 	strcpy(ifr.ifr_name, ifname);
510 	printf("ip6 on %s:\n", ifr.ifr_name);
511 
512 	if (ioctl(s, SIOCGIFSTAT_IN6, (char *)&ifr) < 0) {
513 		perror("Warning: ioctl(SIOCGIFSTAT_IN6)");
514 		goto end;
515 	}
516 
517 	p(ifs6_in_receive, "\t%llu total input datagram%s\n");
518 	p(ifs6_in_hdrerr, "\t%llu datagram%s with invalid header received\n");
519 	p(ifs6_in_toobig, "\t%llu datagram%s exceeded MTU received\n");
520 	p(ifs6_in_noroute, "\t%llu datagram%s with no route received\n");
521 	p(ifs6_in_addrerr, "\t%llu datagram%s with invalid dst received\n");
522 	p(ifs6_in_protounknown, "\t%llu datagram%s with unknown proto received\n");
523 	p(ifs6_in_truncated, "\t%llu truncated datagram%s received\n");
524 	p(ifs6_in_discard, "\t%llu input datagram%s discarded\n");
525 	p(ifs6_in_deliver,
526 	  "\t%llu datagram%s delivered to an upper layer protocol\n");
527 	p(ifs6_out_forward, "\t%llu datagram%s forwarded to this interface\n");
528 	p(ifs6_out_request,
529 	  "\t%llu datagram%s sent from an upper layer protocol\n");
530 	p(ifs6_out_discard, "\t%llu total discarded output datagram%s\n");
531 	p(ifs6_out_fragok, "\t%llu output datagram%s fragmented\n");
532 	p(ifs6_out_fragfail, "\t%llu output datagram%s failed on fragment\n");
533 	p(ifs6_out_fragcreat, "\t%llu output datagram%s succeeded on fragment\n");
534 	p(ifs6_reass_reqd, "\t%llu incoming datagram%s fragmented\n");
535 	p(ifs6_reass_ok, "\t%llu datagram%s reassembled\n");
536 	p(ifs6_reass_fail, "\t%llu datagram%s failed on reassembling\n");
537 	p(ifs6_in_mcast, "\t%llu multicast datagram%s received\n");
538 	p(ifs6_out_mcast, "\t%llu multicast datagram%s sent\n");
539 
540   end:
541 	close(s);
542 
543 #undef p
544 #undef p_5
545 }
546 
547 static	char *icmp6names[] = {
548 	"#0",
549 	"unreach",
550 	"packet too big",
551 	"time exceed",
552 	"parameter problem",
553 	"#5",
554 	"#6",
555 	"#7",
556 	"#8",
557 	"#9",
558 	"#10",
559 	"#11",
560 	"#12",
561 	"#13",
562 	"#14",
563 	"#15",
564 	"#16",
565 	"#17",
566 	"#18",
567 	"#19",
568 	"#20",
569 	"#21",
570 	"#22",
571 	"#23",
572 	"#24",
573 	"#25",
574 	"#26",
575 	"#27",
576 	"#28",
577 	"#29",
578 	"#30",
579 	"#31",
580 	"#32",
581 	"#33",
582 	"#34",
583 	"#35",
584 	"#36",
585 	"#37",
586 	"#38",
587 	"#39",
588 	"#40",
589 	"#41",
590 	"#42",
591 	"#43",
592 	"#44",
593 	"#45",
594 	"#46",
595 	"#47",
596 	"#48",
597 	"#49",
598 	"#50",
599 	"#51",
600 	"#52",
601 	"#53",
602 	"#54",
603 	"#55",
604 	"#56",
605 	"#57",
606 	"#58",
607 	"#59",
608 	"#60",
609 	"#61",
610 	"#62",
611 	"#63",
612 	"#64",
613 	"#65",
614 	"#66",
615 	"#67",
616 	"#68",
617 	"#69",
618 	"#70",
619 	"#71",
620 	"#72",
621 	"#73",
622 	"#74",
623 	"#75",
624 	"#76",
625 	"#77",
626 	"#78",
627 	"#79",
628 	"#80",
629 	"#81",
630 	"#82",
631 	"#83",
632 	"#84",
633 	"#85",
634 	"#86",
635 	"#87",
636 	"#88",
637 	"#89",
638 	"#80",
639 	"#91",
640 	"#92",
641 	"#93",
642 	"#94",
643 	"#95",
644 	"#96",
645 	"#97",
646 	"#98",
647 	"#99",
648 	"#100",
649 	"#101",
650 	"#102",
651 	"#103",
652 	"#104",
653 	"#105",
654 	"#106",
655 	"#107",
656 	"#108",
657 	"#109",
658 	"#110",
659 	"#111",
660 	"#112",
661 	"#113",
662 	"#114",
663 	"#115",
664 	"#116",
665 	"#117",
666 	"#118",
667 	"#119",
668 	"#120",
669 	"#121",
670 	"#122",
671 	"#123",
672 	"#124",
673 	"#125",
674 	"#126",
675 	"#127",
676 	"echo",
677 	"echo reply",
678 	"multicast listener query",
679 	"multicast listener report",
680 	"multicast listener done",
681 	"router solicitation",
682 	"router advertisment",
683 	"neighbor solicitation",
684 	"neighbor advertisment",
685 	"redirect",
686 	"router renumbering",
687 	"node information request",
688 	"node information reply",
689 	"#141",
690 	"#142",
691 	"#143",
692 	"#144",
693 	"#145",
694 	"#146",
695 	"#147",
696 	"#148",
697 	"#149",
698 	"#150",
699 	"#151",
700 	"#152",
701 	"#153",
702 	"#154",
703 	"#155",
704 	"#156",
705 	"#157",
706 	"#158",
707 	"#159",
708 	"#160",
709 	"#161",
710 	"#162",
711 	"#163",
712 	"#164",
713 	"#165",
714 	"#166",
715 	"#167",
716 	"#168",
717 	"#169",
718 	"#170",
719 	"#171",
720 	"#172",
721 	"#173",
722 	"#174",
723 	"#175",
724 	"#176",
725 	"#177",
726 	"#178",
727 	"#179",
728 	"#180",
729 	"#181",
730 	"#182",
731 	"#183",
732 	"#184",
733 	"#185",
734 	"#186",
735 	"#187",
736 	"#188",
737 	"#189",
738 	"#180",
739 	"#191",
740 	"#192",
741 	"#193",
742 	"#194",
743 	"#195",
744 	"#196",
745 	"#197",
746 	"#198",
747 	"#199",
748 	"#200",
749 	"#201",
750 	"#202",
751 	"#203",
752 	"#204",
753 	"#205",
754 	"#206",
755 	"#207",
756 	"#208",
757 	"#209",
758 	"#210",
759 	"#211",
760 	"#212",
761 	"#213",
762 	"#214",
763 	"#215",
764 	"#216",
765 	"#217",
766 	"#218",
767 	"#219",
768 	"#220",
769 	"#221",
770 	"#222",
771 	"#223",
772 	"#224",
773 	"#225",
774 	"#226",
775 	"#227",
776 	"#228",
777 	"#229",
778 	"#230",
779 	"#231",
780 	"#232",
781 	"#233",
782 	"#234",
783 	"#235",
784 	"#236",
785 	"#237",
786 	"#238",
787 	"#239",
788 	"#240",
789 	"#241",
790 	"#242",
791 	"#243",
792 	"#244",
793 	"#245",
794 	"#246",
795 	"#247",
796 	"#248",
797 	"#249",
798 	"#250",
799 	"#251",
800 	"#252",
801 	"#253",
802 	"#254",
803 	"#255",
804 };
805 
806 /*
807  * Dump ICMP6 statistics.
808  */
809 void
810 icmp6_stats(off, name)
811 	u_long off;
812 	char *name;
813 {
814 	struct icmp6stat icmp6stat;
815 	register int i, first;
816 
817 	if (off == 0)
818 		return;
819 	kread(off, (char *)&icmp6stat, sizeof (icmp6stat));
820 	printf("%s:\n", name);
821 
822 #define	p(f, m) if (icmp6stat.f || sflag <= 1) \
823     printf(m, (unsigned long long)icmp6stat.f, plural(icmp6stat.f))
824 #define p_5(f, m) printf(m, (unsigned long long)icmp6stat.f)
825 
826 	p(icp6s_error, "\t%llu call%s to icmp_error\n");
827 	p(icp6s_canterror,
828 	    "\t%llu error%s not generated because old message was icmp error or so\n");
829 	p(icp6s_toofreq,
830 	  "\t%llu error%s not generated because rate limitation\n");
831 	for (first = 1, i = 0; i < 256; i++)
832 		if (icmp6stat.icp6s_outhist[i] != 0) {
833 			if (first) {
834 				printf("\tOutput histogram:\n");
835 				first = 0;
836 			}
837 			printf("\t\t%s: %llu\n", icmp6names[i],
838 			    (unsigned long long)icmp6stat.icp6s_outhist[i]);
839 		}
840 	p(icp6s_badcode, "\t%llu message%s with bad code fields\n");
841 	p(icp6s_tooshort, "\t%llu message%s < minimum length\n");
842 	p(icp6s_checksum, "\t%llu bad checksum%s\n");
843 	p(icp6s_badlen, "\t%llu message%s with bad length\n");
844 	for (first = 1, i = 0; i < ICMP6_MAXTYPE; i++)
845 		if (icmp6stat.icp6s_inhist[i] != 0) {
846 			if (first) {
847 				printf("\tInput histogram:\n");
848 				first = 0;
849 			}
850 			printf("\t\t%s: %llu\n", icmp6names[i],
851 			    (unsigned long long)icmp6stat.icp6s_inhist[i]);
852 		}
853 	printf("\tHistgram of error messages to be generated:\n");
854 	p_5(icp6s_odst_unreach_noroute, "\t\t%llu no route\n");
855 	p_5(icp6s_odst_unreach_admin, "\t\t%llu administratively prohibited\n");
856 	p_5(icp6s_odst_unreach_beyondscope, "\t\t%llu beyond scope\n");
857 	p_5(icp6s_odst_unreach_addr, "\t\t%llu address unreachable\n");
858 	p_5(icp6s_odst_unreach_noport, "\t\t%llu port unreachable\n");
859 	p_5(icp6s_opacket_too_big, "\t\t%llu packet too big\n");
860 	p_5(icp6s_otime_exceed_transit, "\t\t%llu time exceed transit\n");
861 	p_5(icp6s_otime_exceed_reassembly, "\t\t%llu time exceed reassembly\n");
862 	p_5(icp6s_oparamprob_header, "\t\t%llu erroneous header field\n");
863 	p_5(icp6s_oparamprob_nextheader, "\t\t%llu unrecognized next header\n");
864 	p_5(icp6s_oparamprob_option, "\t\t%llu unrecognized option\n");
865 	p_5(icp6s_oredirect, "\t\t%llu redirect\n");
866 	p_5(icp6s_ounknown, "\t\t%llu unknown\n");
867 
868 	p(icp6s_reflect, "\t%llu message response%s generated\n");
869 	p(icp6s_nd_toomanyopt, "\t%llu message%s with too many ND options\n");
870 #undef p
871 #undef p_5
872 }
873 
874 /*
875  * Dump ICMPv6 per-interface statistics based on RFC 2466.
876  */
877 void
878 icmp6_ifstats(ifname)
879 	char *ifname;
880 {
881 	struct in6_ifreq ifr;
882 	int s;
883 #define	p(f, m) if (ifr.ifr_ifru.ifru_icmp6stat.f || sflag <= 1) \
884     printf(m, (unsigned long long)ifr.ifr_ifru.ifru_icmp6stat.f, plural(ifr.ifr_ifru.ifru_icmp6stat.f))
885 
886 	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
887 		perror("Warning: socket(AF_INET6)");
888 		return;
889 	}
890 
891 	strcpy(ifr.ifr_name, ifname);
892 	printf("icmp6 on %s:\n", ifr.ifr_name);
893 
894 	if (ioctl(s, SIOCGIFSTAT_ICMP6, (char *)&ifr) < 0) {
895 		perror("Warning: ioctl(SIOCGIFSTAT_ICMP6)");
896 		goto end;
897 	}
898 
899 	p(ifs6_in_msg, "\t%llu total input message%s\n");
900 	p(ifs6_in_error, "\t%llu total input error message%s\n");
901 	p(ifs6_in_dstunreach, "\t%llu input destination unreachable error%s\n");
902 	p(ifs6_in_adminprohib, "\t%llu input administratively prohibited error%s\n");
903 	p(ifs6_in_timeexceed, "\t%llu input time exceeded error%s\n");
904 	p(ifs6_in_paramprob, "\t%llu input parameter problem error%s\n");
905 	p(ifs6_in_pkttoobig, "\t%llu input packet too big error%s\n");
906 	p(ifs6_in_echo, "\t%llu input echo request%s\n");
907 	p(ifs6_in_echoreply, "\t%llu input echo reply%s\n");
908 	p(ifs6_in_routersolicit, "\t%llu input router solicitation%s\n");
909 	p(ifs6_in_routeradvert, "\t%llu input router advertisement%s\n");
910 	p(ifs6_in_neighborsolicit, "\t%llu input neighbor solicitation%s\n");
911 	p(ifs6_in_neighboradvert, "\t%llu input neighbor advertisement%s\n");
912 	p(ifs6_in_redirect, "\t%llu input redirect%s\n");
913 	p(ifs6_in_mldquery, "\t%llu input MLD query%s\n");
914 	p(ifs6_in_mldreport, "\t%llu input MLD report%s\n");
915 	p(ifs6_in_mlddone, "\t%llu input MLD done%s\n");
916 
917 	p(ifs6_out_msg, "\t%llu total output message%s\n");
918 	p(ifs6_out_error, "\t%llu total output error message%s\n");
919 	p(ifs6_out_dstunreach, "\t%llu output destination unreachable error%s\n");
920 	p(ifs6_out_adminprohib, "\t%llu output administratively prohibited error%s\n");
921 	p(ifs6_out_timeexceed, "\t%llu output time exceeded error%s\n");
922 	p(ifs6_out_paramprob, "\t%llu output parameter problem error%s\n");
923 	p(ifs6_out_pkttoobig, "\t%llu output packet too big error%s\n");
924 	p(ifs6_out_echo, "\t%llu output echo request%s\n");
925 	p(ifs6_out_echoreply, "\t%llu output echo reply%s\n");
926 	p(ifs6_out_routersolicit, "\t%llu output router solicitation%s\n");
927 	p(ifs6_out_routeradvert, "\t%llu output router advertisement%s\n");
928 	p(ifs6_out_neighborsolicit, "\t%llu output neighbor solicitation%s\n");
929 	p(ifs6_out_neighboradvert, "\t%llu output neighbor advertisement%s\n");
930 	p(ifs6_out_redirect, "\t%llu output redirect%s\n");
931 	p(ifs6_out_mldquery, "\t%llu output MLD query%s\n");
932 	p(ifs6_out_mldreport, "\t%llu output MLD report%s\n");
933 	p(ifs6_out_mlddone, "\t%llu output MLD done%s\n");
934 
935   end:
936 	close(s);
937 #undef p
938 }
939 
940 /*
941  * Dump PIM statistics structure.
942  */
943 void
944 pim6_stats(off, name)
945 	u_long off;
946 	char *name;
947 {
948 	struct pim6stat pim6stat;
949 
950 	if (off == 0)
951 		return;
952 	kread(off, (char *)&pim6stat, sizeof(pim6stat));
953 	printf("%s:\n", name);
954 
955 #define	p(f, m) if (pim6stat.f || sflag <= 1) \
956     printf(m, (unsigned long long)pim6stat.f, plural(pim6stat.f))
957 	p(pim6s_rcv_total, "\t%llu message%s received\n");
958 	p(pim6s_rcv_tooshort, "\t%llu message%s received with too few bytes\n");
959 	p(pim6s_rcv_badsum, "\t%llu message%s received with bad checksum\n");
960 	p(pim6s_rcv_badversion, "\t%llu message%s received with bad version\n");
961 	p(pim6s_rcv_registers, "\t%llu register%s received\n");
962 	p(pim6s_rcv_badregisters, "\t%llu bad register%s received\n");
963 	p(pim6s_snd_registers, "\t%llu register%s sent\n");
964 #undef p
965 }
966 
967 /*
968  * Pretty print an Internet address (net address + port).
969  * If the nflag was specified, use numbers instead of names.
970  */
971 #define GETSERVBYPORT6(port, proto, ret)\
972 {\
973 	if (strcmp((proto), "tcp6") == 0)\
974 		(ret) = getservbyport((int)(port), "tcp");\
975 	else if (strcmp((proto), "udp6") == 0)\
976 		(ret) = getservbyport((int)(port), "udp");\
977 	else\
978 		(ret) = getservbyport((int)(port), (proto));\
979 };
980 
981 void
982 inet6print(in6, port, proto, numeric)
983 	register struct in6_addr *in6;
984 	int port;
985 	char *proto;
986 	int numeric;
987 {
988 	struct servent *sp = 0;
989 	char line[80], *cp;
990 	int width;
991 
992 	sprintf(line, "%.*s.", lflag ? 39 :
993 		(Aflag && !numeric) ? 12 : 16, inet6name(in6));
994 	cp = index(line, '\0');
995 	if (!numeric && port)
996 		GETSERVBYPORT6(port, proto, sp);
997 	if (sp || port == 0)
998 		sprintf(cp, "%.8s", sp ? sp->s_name : "*");
999 	else
1000 		sprintf(cp, "%d", ntohs((u_short)port));
1001 	width = lflag ? 45 : Aflag ? 18 : 22;
1002 	printf("%-*.*s ", width, width, line);
1003 }
1004 
1005 /*
1006  * Construct an Internet address representation.
1007  * If the nflag has been supplied, give
1008  * numeric value, otherwise try for symbolic name.
1009  */
1010 
1011 char *
1012 inet6name(in6p)
1013 	struct in6_addr *in6p;
1014 {
1015 	register char *cp;
1016 	static char line[50];
1017 	struct hostent *hp;
1018 	static char domain[MAXHOSTNAMELEN + 1];
1019 	static int first = 1;
1020 
1021 	if (first && !nflag) {
1022 		first = 0;
1023 		if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
1024 		    (cp = index(domain, '.')))
1025 			(void) strcpy(domain, cp + 1);
1026 		else
1027 			domain[0] = 0;
1028 	}
1029 	cp = 0;
1030 	if (!nflag && !IN6_IS_ADDR_UNSPECIFIED(in6p)) {
1031 		hp = gethostbyaddr((char *)in6p, sizeof(*in6p), AF_INET6);
1032 		if (hp) {
1033 			if ((cp = index(hp->h_name, '.')) &&
1034 			    !strcmp(cp + 1, domain))
1035 				*cp = 0;
1036 			cp = hp->h_name;
1037 		}
1038 	}
1039 	if (IN6_IS_ADDR_UNSPECIFIED(in6p))
1040 		strcpy(line, "*");
1041 	else if (cp)
1042 		strcpy(line, cp);
1043 	else
1044 		sprintf(line, "%s",
1045 			inet_ntop(AF_INET6, (void *)in6p, ntop_buf,
1046 				sizeof(ntop_buf)));
1047 	return (line);
1048 }
1049 #endif /*INET6*/
1050