inet6.c revision 74262
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: head/usr.bin/netstat/inet6.c 74262 2001-03-14 20:51:26Z brian $
35 */
36
37#ifndef lint
38/*
39static 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
71struct	socket sockb;
72
73char	*inet6name __P((struct in6_addr *));
74void	inet6print __P((struct in6_addr *, int, char *, int));
75
76static char ntop_buf[INET6_ADDRSTRLEN];
77
78static	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 */
340void
341ip6_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 */
493void
494ip6_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
547static	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 */
809void
810icmp6_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 */
877void
878icmp6_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 */
943void
944pim6_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
981void
982inet6print(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
1011char *
1012inet6name(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];
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