1 /* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (c) 2007-2009 Bruce Simpson.
7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the project 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.
22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/types.h>
39 #include <sys/param.h>
40 #include <sys/sysctl.h>
41 #include <sys/socket.h>
42 #include <sys/queue.h>
46 #include <net/if_types.h>
47 #include <net/if_dl.h>
48 #include <net/route.h>
50 #include <netinet/in.h>
51 #include <netinet/in_var.h>
52 #include <netinet/in_systm.h>
53 #include <netinet/ip.h>
54 #include <netinet/igmp.h>
55 #include <netinet/if_ether.h>
56 #include <netinet/igmp_var.h>
59 #include <netinet/icmp6.h>
60 #include <netinet6/mld6_var.h>
63 #include <arpa/inet.h>
84 * Currently the KVM build is broken. To be fixed it requires uncovering
85 * large amount of _KERNEL code in include files, and it is also very
86 * tentative to internal kernel ABI changes. If anyone wishes to restore
87 * it, please move it out of src/usr.sbin to src/tools/tools.
93 /* XXX: This file currently assumes INET support in the base system. */
98 extern void printb(const char *, unsigned int, const char *);
101 struct sockaddr_storage ss;
103 struct sockaddr_dl sdl;
105 struct sockaddr_in sin;
108 struct sockaddr_in6 sin6;
111 typedef union sockunion sockunion_t;
113 uint32_t ifindex = 0;
120 #define sa_dl_equal(a1, a2) \
121 ((((struct sockaddr_dl *)(a1))->sdl_len == \
122 ((struct sockaddr_dl *)(a2))->sdl_len) && \
123 (bcmp(LLADDR((struct sockaddr_dl *)(a1)), \
124 LLADDR((struct sockaddr_dl *)(a2)), \
125 ((struct sockaddr_dl *)(a1))->sdl_alen) == 0))
128 * Most of the code in this utility is to support the use of KVM for
129 * post-mortem debugging of the multicast code.
134 static void if_addrlist(struct ifaddr *);
135 static struct in_multi *
136 in_multientry(struct in_multi *);
140 static void if6_addrlist(struct ifaddr *);
141 static struct in6_multi *
142 in6_multientry(struct in6_multi *);
145 static void kread(u_long, void *, int);
146 static void ll_addrlist(struct ifaddr *);
148 static int ifmcstat_kvm(const char *kernel, const char *core);
150 #define KREAD(addr, buf, type) \
151 kread((u_long)addr, (void *)buf, sizeof(type))
154 struct nlist nl[] = {
155 { "_ifnet", 0, 0, 0, 0, },
160 #endif /* WITH_KVM */
162 static int ifmcstat_getifmaddrs(void);
164 static void in_ifinfo(struct igmp_ifinfo *);
165 static const char * inm_mode(u_int mode);
168 static void in6_ifinfo(struct mld_ifinfo *);
169 static const char * inet6_n2a(struct in6_addr *, uint32_t);
171 int main(int, char **);
178 "usage: ifmcstat [-i interface] [-f address family]"
181 " [-K] [-M core] [-N system]"
187 static const char *options = "i:f:vM:N:"
194 main(int argc, char **argv)
198 const char *kernel = NULL;
199 const char *core = NULL;
202 while ((c = getopt(argc, argv, options)) != -1) {
205 if ((ifindex = if_nametoindex(optarg)) == 0) {
206 fprintf(stderr, "%s: unknown interface\n",
214 if (strcmp(optarg, "inet") == 0) {
220 if (strcmp(optarg, "inet6") == 0) {
225 if (strcmp(optarg, "link") == 0) {
229 fprintf(stderr, "%s: unknown address family\n", optarg);
246 core = strdup(optarg);
250 kernel = strdup(optarg);
261 if (af == AF_LINK && vflag)
266 error = ifmcstat_kvm(kernel, core);
268 * If KVM failed, and user did not explicitly specify a core file,
269 * or force KVM backend to be disabled, try the sysctl backend.
271 if (!Kflag || (error != 0 && (core == NULL && kernel == NULL)))
273 error = ifmcstat_getifmaddrs();
284 in_ifinfo(struct igmp_ifinfo *igi)
288 switch (igi->igi_version) {
292 printf("igmpv%d", igi->igi_version);
295 printf("igmpv?(%d)", igi->igi_version);
299 printb(" flags", igi->igi_flags, "\020\1SILENT\2LOOPBACK");
300 if (igi->igi_version == IGMP_VERSION_3) {
301 printf(" rv %u qi %u qri %u uri %u",
302 igi->igi_rv, igi->igi_qi, igi->igi_qri, igi->igi_uri);
305 printf(" v1timer %u v2timer %u v3timer %u",
306 igi->igi_v1_timer, igi->igi_v2_timer, igi->igi_v3_timer);
311 static const char *inm_modes[] = {
321 if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE)
322 return (inm_modes[mode]);
331 ifmcstat_kvm(const char *kernel, const char *core)
333 char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
334 struct ifnet *ifp, *nifp, ifnet;
336 if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
338 perror("kvm_openfiles");
341 if (kvm_nlist(kvmd, nl) < 0) {
345 if (nl[N_IFNET].n_value == 0) {
346 printf("symbol %s not found\n", nl[N_IFNET].n_name);
349 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
351 KREAD(ifp, &ifnet, struct ifnet);
352 nifp = ifnet.if_link.tqe_next;
353 if (ifindex && ifindex != ifnet.if_index)
356 printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
358 if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
361 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
364 ll_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
373 kread(u_long addr, void *buf, int len)
376 if (kvm_read(kvmd, addr, buf, len) != len) {
383 ll_addrlist(struct ifaddr *ifap)
385 char addrbuf[NI_MAXHOST];
388 struct sockaddr_dl sdl;
389 struct ifaddr *ifap0;
391 if (af && af != AF_LINK)
396 KREAD(ifap, &ifa, struct ifaddr);
397 if (ifa.ifa_addr == NULL)
399 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
400 if (sa.sa_family != PF_LINK)
402 KREAD(ifa.ifa_addr, &sdl, struct sockaddr_dl);
403 if (sdl.sdl_alen == 0)
406 getnameinfo((struct sockaddr *)&sdl, sdl.sdl_len,
407 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
408 printf("\tlink %s\n", addrbuf);
410 ifap = ifa.ifa_link.tqe_next;
414 struct ifmultiaddr ifm, *ifmp = 0;
416 KREAD(ifap0, &ifa, struct ifaddr);
417 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
418 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
419 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
421 KREAD(ifmp, &ifm, struct ifmultiaddr);
422 if (ifm.ifma_addr == NULL)
424 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
425 if (sa.sa_family != AF_LINK)
427 KREAD(ifm.ifma_addr, &sdl, struct sockaddr_dl);
429 getnameinfo((struct sockaddr *)&sdl,
430 sdl.sdl_len, addrbuf, sizeof(addrbuf),
431 NULL, 0, NI_NUMERICHOST);
432 printf("\t\tgroup %s refcnt %d\n",
433 addrbuf, ifm.ifma_refcount);
435 ifmp = TAILQ_NEXT(&ifm, ifma_link);
443 if6_addrlist(struct ifaddr *ifap)
448 struct in6_ifaddr if6a;
449 struct ifaddr *ifap0;
451 if (af && af != AF_INET6)
455 KREAD(ifap, &ifa, struct ifaddr);
456 if (ifa.ifa_addr == NULL)
458 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
459 if (sa.sa_family != PF_INET6)
461 KREAD(ifap, &if6a, struct in6_ifaddr);
462 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr,
463 if6a.ia_addr.sin6_scope_id));
465 * Print per-link MLD information, if available.
467 if (ifa.ifa_ifp != NULL) {
468 struct in6_ifextra ie;
469 struct mld_ifinfo mli;
471 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
472 KREAD(ifnet.if_afdata[AF_INET6], &ie,
474 if (ie.mld_ifinfo != NULL) {
475 KREAD(ie.mld_ifinfo, &mli, struct mld_ifinfo);
480 ifap = ifa.ifa_link.tqe_next;
484 struct ifmultiaddr ifm, *ifmp = 0;
485 struct sockaddr_dl sdl;
487 KREAD(ifap0, &ifa, struct ifaddr);
488 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
489 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
490 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
492 KREAD(ifmp, &ifm, struct ifmultiaddr);
493 if (ifm.ifma_addr == NULL)
495 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
496 if (sa.sa_family != AF_INET6)
498 (void)in6_multientry((struct in6_multi *)
500 if (ifm.ifma_lladdr == 0)
502 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
503 printf("\t\t\tmcast-macaddr %s refcnt %d\n",
504 ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
507 ifmp = TAILQ_NEXT(&ifm, ifma_link);
512 static struct in6_multi *
513 in6_multientry(struct in6_multi *mc)
515 struct in6_multi multi;
517 KREAD(mc, &multi, struct in6_multi);
518 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr, 0));
519 printf(" refcnt %u\n", multi.in6m_refcount);
521 return (multi.in6m_entry.le_next);
529 if_addrlist(struct ifaddr *ifap)
535 struct ifaddr *ifap0;
537 if (af && af != AF_INET)
541 KREAD(ifap, &ifa, struct ifaddr);
542 if (ifa.ifa_addr == NULL)
544 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
545 if (sa.sa_family != PF_INET)
547 KREAD(ifap, &ia, struct in_ifaddr);
548 printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr));
550 * Print per-link IGMP information, if available.
552 if (ifa.ifa_ifp != NULL) {
554 struct igmp_ifinfo igi;
556 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
557 KREAD(ifnet.if_afdata[AF_INET], &ii, struct in_ifinfo);
558 if (ii.ii_igmp != NULL) {
559 KREAD(ii.ii_igmp, &igi, struct igmp_ifinfo);
564 ifap = ifa.ifa_link.tqe_next;
567 struct ifmultiaddr ifm, *ifmp = 0;
568 struct sockaddr_dl sdl;
570 KREAD(ifap0, &ifa, struct ifaddr);
571 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
572 if (TAILQ_FIRST(&ifnet.if_multiaddrs))
573 ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
575 KREAD(ifmp, &ifm, struct ifmultiaddr);
576 if (ifm.ifma_addr == NULL)
578 KREAD(ifm.ifma_addr, &sa, struct sockaddr);
579 if (sa.sa_family != AF_INET)
581 (void)in_multientry((struct in_multi *)
583 if (ifm.ifma_lladdr == 0)
585 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
586 printf("\t\t\tmcast-macaddr %s refcnt %d\n",
587 ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
590 ifmp = TAILQ_NEXT(&ifm, ifma_link);
595 static const char *inm_states[] = {
608 inm_state(u_int state)
611 if (state >= IGMP_NOT_MEMBER && state <= IGMP_LEAVING_MEMBER)
612 return (inm_states[state]);
617 static struct ip_msource *
618 ims_min_kvm(struct in_multi *pinm)
620 struct ip_msource ims0;
621 struct ip_msource *tmp, *parent;
624 tmp = RB_ROOT(&pinm->inm_srcs);
627 KREAD(tmp, &ims0, struct ip_msource);
628 tmp = RB_LEFT(&ims0, ims_link);
630 return (parent); /* kva */
633 /* XXX This routine is buggy. See RB_NEXT in sys/tree.h. */
634 static struct ip_msource *
635 ims_next_kvm(struct ip_msource *ims)
637 struct ip_msource ims0, ims1;
638 struct ip_msource *tmp;
640 KREAD(ims, &ims0, struct ip_msource);
641 if (RB_RIGHT(&ims0, ims_link)) {
642 ims = RB_RIGHT(&ims0, ims_link);
643 KREAD(ims, &ims1, struct ip_msource);
644 while ((tmp = RB_LEFT(&ims1, ims_link))) {
645 KREAD(tmp, &ims0, struct ip_msource);
646 ims = RB_LEFT(&ims0, ims_link);
649 tmp = RB_PARENT(&ims0, ims_link);
651 KREAD(tmp, &ims1, struct ip_msource);
652 if (ims == RB_LEFT(&ims1, ims_link))
655 while ((tmp = RB_PARENT(&ims0, ims_link))) {
656 KREAD(tmp, &ims1, struct ip_msource);
657 if (ims == RB_RIGHT(&ims1, ims_link)) {
659 KREAD(ims, &ims0, struct ip_msource);
663 ims = RB_PARENT(&ims0, ims_link);
666 return (ims); /* kva */
670 inm_print_sources_kvm(struct in_multi *pinm)
672 struct ip_msource ims0;
673 struct ip_msource *ims;
679 fmode = pinm->inm_st[1].iss_fmode;
680 if (fmode == MCAST_UNDEFINED)
682 for (ims = ims_min_kvm(pinm); ims != NULL; ims = ims_next_kvm(ims)) {
685 KREAD(ims, &ims0, struct ip_msource);
686 /* Only print sources in-mode at t1. */
687 if (fmode != ims_get_mode(pinm, ims, 1))
689 src.s_addr = htonl(ims0.ims_haddr);
690 printf("%s%s", (cnt++ == 0 ? "" : ","), inet_ntoa(src));
695 static struct in_multi *
696 in_multientry(struct in_multi *pinm)
699 const char *state, *mode;
701 KREAD(pinm, &inm, struct in_multi);
702 printf("\t\tgroup %s", inet_ntoa(inm.inm_addr));
703 printf(" refcnt %u", inm.inm_refcount);
705 state = inm_state(inm.inm_state);
707 printf(" state %s", state);
709 printf(" state (%d)", inm.inm_state);
711 mode = inm_mode(inm.inm_st[1].iss_fmode);
713 printf(" mode %s", mode);
715 printf(" mode (%d)", inm.inm_st[1].iss_fmode);
718 printf(" asm %u ex %u in %u rec %u",
719 (u_int)inm.inm_st[1].iss_asm,
720 (u_int)inm.inm_st[1].iss_ex,
721 (u_int)inm.inm_st[1].iss_in,
722 (u_int)inm.inm_st[1].iss_rec);
728 inm_print_sources_kvm(&inm);
737 #endif /* WITH_KVM */
742 in6_ifinfo(struct mld_ifinfo *mli)
746 switch (mli->mli_version) {
749 printf("mldv%d", mli->mli_version);
752 printf("mldv?(%d)", mli->mli_version);
756 printb(" flags", mli->mli_flags, "\020\1SILENT\2USEALLOW");
757 if (mli->mli_version == MLD_VERSION_2) {
758 printf(" rv %u qi %u qri %u uri %u",
759 mli->mli_rv, mli->mli_qi, mli->mli_qri, mli->mli_uri);
762 printf(" v1timer %u v2timer %u", mli->mli_v1_timer,
769 inet6_n2a(struct in6_addr *p, uint32_t scope_id)
771 static char buf[NI_MAXHOST];
772 struct sockaddr_in6 sin6;
773 const int niflags = NI_NUMERICHOST;
775 memset(&sin6, 0, sizeof(sin6));
776 sin6.sin6_family = AF_INET6;
777 sin6.sin6_len = sizeof(struct sockaddr_in6);
779 sin6.sin6_scope_id = scope_id;
780 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
781 buf, sizeof(buf), NULL, 0, niflags) == 0) {
784 return ("(invalid)");
791 * Retrieve per-group source filter mode and lists via sysctl.
794 inm_print_sources_sysctl(uint32_t ifindex, struct in_addr gina)
796 #define MAX_SYSCTL_TRY 5
805 struct in_addr *pina;
810 mibsize = nitems(mib);
811 if (sysctlnametomib("net.inet.ip.mcast.filters", mib, &mibsize) == -1) {
812 perror("sysctlnametomib");
818 mib[6] = gina.s_addr; /* 32 bits wide */
819 mibsize = nitems(mib);
821 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
822 perror("sysctl net.inet.ip.mcast.filters");
825 if ((buf = malloc(needed)) == NULL) {
829 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
830 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
837 } while (buf == NULL);
840 if (len < sizeof(uint32_t)) {
847 len -= sizeof(uint32_t);
849 modestr = inm_mode(fmode);
851 printf(" mode %s", modestr);
853 printf(" mode (%u)", fmode);
858 cnt = len / sizeof(struct in_addr);
859 pina = (struct in_addr *)p;
861 for (i = 0; i < cnt; i++) {
864 fprintf(stdout, "%s%s", (i == 0 ? "" : ","),
866 len -= sizeof(struct in_addr);
869 fprintf(stderr, "warning: %u trailing bytes from %s\n",
870 (unsigned int)len, "net.inet.ip.mcast.filters");
875 #undef MAX_SYSCTL_TRY
882 * Retrieve MLD per-group source filter mode and lists via sysctl.
884 * Note: The 128-bit IPv6 group address needs to be segmented into
885 * 32-bit pieces for marshaling to sysctl. So the MIB name ends
886 * up looking like this:
887 * a.b.c.d.e.ifindex.g[0].g[1].g[2].g[3]
888 * Assumes that pgroup originated from the kernel, so its components
889 * are already in network-byte order.
892 in6m_print_sources_sysctl(uint32_t ifindex, struct in6_addr *pgroup)
894 #define MAX_SYSCTL_TRY 5
895 char addrbuf[INET6_ADDRSTRLEN];
905 struct in6_addr *pina;
910 mibsize = nitems(mib);
911 if (sysctlnametomib("net.inet6.ip6.mcast.filters", mib,
913 perror("sysctlnametomib");
920 for (i = 0; i < 4; i++)
923 mibsize = nitems(mib);
925 if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
926 perror("sysctl net.inet6.ip6.mcast.filters");
929 if ((buf = malloc(needed)) == NULL) {
933 if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
934 if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
941 } while (buf == NULL);
944 if (len < sizeof(uint32_t)) {
951 len -= sizeof(uint32_t);
953 modestr = inm_mode(fmode);
955 printf(" mode %s", modestr);
957 printf(" mode (%u)", fmode);
962 cnt = len / sizeof(struct in6_addr);
963 pina = (struct in6_addr *)p;
965 for (i = 0; i < cnt; i++) {
968 inet_ntop(AF_INET6, (const char *)pina++, addrbuf,
970 fprintf(stdout, "%s%s", (i == 0 ? "" : ","), addrbuf);
971 len -= sizeof(struct in6_addr);
974 fprintf(stderr, "warning: %u trailing bytes from %s\n",
975 (unsigned int)len, "net.inet6.ip6.mcast.filters");
980 #undef MAX_SYSCTL_TRY
985 ifmcstat_getifmaddrs(void)
987 char thisifname[IFNAMSIZ];
988 char addrbuf[NI_MAXHOST];
989 struct ifaddrs *ifap, *ifa;
990 struct ifmaddrs *ifmap, *ifma;
991 sockunion_t lastifasa;
992 sockunion_t *psa, *pgsa, *pllsa, *pifasa;
995 uint32_t lastifindex, thisifindex;
1003 lastifasa.ss.ss_family = AF_UNSPEC;
1005 if (getifaddrs(&ifap) != 0) {
1006 warn("getifmaddrs");
1010 if (getifmaddrs(&ifmap) != 0) {
1011 warn("getifmaddrs");
1016 for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
1018 if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
1021 psa = (sockunion_t *)ifma->ifma_name;
1022 if (psa->sa.sa_family != AF_LINK) {
1024 "WARNING: Kernel returned invalid data.\n");
1029 /* Filter on interface name. */
1030 thisifindex = psa->sdl.sdl_index;
1031 if (ifindex != 0 && thisifindex != ifindex)
1034 /* Filter on address family. */
1035 pgsa = (sockunion_t *)ifma->ifma_addr;
1036 if (af != 0 && pgsa->sa.sa_family != af)
1039 strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ);
1040 pcolon = strchr(thisifname, ':');
1044 /* Only print the banner for the first ifmaddrs entry. */
1045 if (lastifindex == 0 || lastifindex != thisifindex) {
1046 lastifindex = thisifindex;
1047 fprintf(stdout, "%s:\n", thisifname);
1051 * Currently, multicast joins only take place on the
1052 * primary IPv4 address, and only on the link-local IPv6
1053 * address, as per IGMPv2/3 and MLDv1/2 semantics.
1054 * Therefore, we only look up the primary address on
1058 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1059 if ((strcmp(ifa->ifa_name, thisifname) != 0) ||
1060 (ifa->ifa_addr == NULL) ||
1061 (ifa->ifa_addr->sa_family != pgsa->sa.sa_family))
1064 * For AF_INET6 only the link-local address should
1065 * be returned. If built without IPv6 support,
1066 * skip this address entirely.
1068 pifasa = (sockunion_t *)ifa->ifa_addr;
1069 if (pifasa->sa.sa_family == AF_INET6
1071 && !IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr)
1080 continue; /* primary address not found */
1082 if (!vflag && pifasa->sa.sa_family == AF_LINK)
1085 /* Parse and print primary address, if not already printed. */
1086 if (lastifasa.ss.ss_family == AF_UNSPEC ||
1087 ((lastifasa.ss.ss_family == AF_LINK &&
1088 !sa_dl_equal(&lastifasa.sa, &pifasa->sa)) ||
1089 !sa_equal(&lastifasa.sa, &pifasa->sa))) {
1091 switch (pifasa->sa.sa_family) {
1102 pafname = "unknown";
1106 switch (pifasa->sa.sa_family) {
1111 inet6_n2a(&pifasa->sin6.sin6_addr,
1112 pifasa->sin6.sin6_scope_id);
1113 strlcpy(addrbuf, p, sizeof(addrbuf));
1121 error = getnameinfo(&pifasa->sa,
1123 addrbuf, sizeof(addrbuf), NULL, 0,
1126 perror("getnameinfo");
1133 fprintf(stdout, "\t%s %s", pafname, addrbuf);
1135 if (pifasa->sa.sa_family == AF_INET6 &&
1136 pifasa->sin6.sin6_scope_id)
1137 fprintf(stdout, " scopeid 0x%x",
1138 pifasa->sin6.sin6_scope_id);
1140 fprintf(stdout, "\n");
1143 * Print per-link IGMP information, if available.
1145 if (pifasa->sa.sa_family == AF_INET) {
1146 struct igmp_ifinfo igi;
1147 size_t mibsize, len;
1150 mibsize = nitems(mib);
1151 if (sysctlnametomib("net.inet.igmp.ifinfo",
1152 mib, &mibsize) == -1) {
1153 perror("sysctlnametomib");
1156 mib[mibsize] = thisifindex;
1157 len = sizeof(struct igmp_ifinfo);
1158 if (sysctl(mib, mibsize + 1, &igi, &len, NULL,
1160 perror("sysctl net.inet.igmp.ifinfo");
1168 * Print per-link MLD information, if available.
1170 if (pifasa->sa.sa_family == AF_INET6) {
1171 struct mld_ifinfo mli;
1172 size_t mibsize, len;
1175 mibsize = nitems(mib);
1176 if (sysctlnametomib("net.inet6.mld.ifinfo",
1177 mib, &mibsize) == -1) {
1178 perror("sysctlnametomib");
1181 mib[mibsize] = thisifindex;
1182 len = sizeof(struct mld_ifinfo);
1183 if (sysctl(mib, mibsize + 1, &mli, &len, NULL,
1185 perror("sysctl net.inet6.mld.ifinfo");
1191 #if defined(INET) || defined(INET6)
1194 lastifasa = *pifasa;
1197 /* Print this group address. */
1199 if (pgsa->sa.sa_family == AF_INET6) {
1200 const char *p = inet6_n2a(&pgsa->sin6.sin6_addr,
1201 pgsa->sin6.sin6_scope_id);
1202 strlcpy(addrbuf, p, sizeof(addrbuf));
1206 error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len,
1207 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
1209 perror("getnameinfo");
1212 fprintf(stdout, "\t\tgroup %s", addrbuf);
1214 if (pgsa->sa.sa_family == AF_INET6 &&
1215 pgsa->sin6.sin6_scope_id)
1216 fprintf(stdout, " scopeid 0x%x",
1217 pgsa->sin6.sin6_scope_id);
1220 if (pgsa->sa.sa_family == AF_INET) {
1221 inm_print_sources_sysctl(thisifindex,
1222 pgsa->sin.sin_addr);
1226 if (pgsa->sa.sa_family == AF_INET6) {
1227 in6m_print_sources_sysctl(thisifindex,
1228 &pgsa->sin6.sin6_addr);
1231 fprintf(stdout, "\n");
1233 /* Link-layer mapping, if present. */
1234 pllsa = (sockunion_t *)ifma->ifma_lladdr;
1235 if (pllsa != NULL) {
1236 error = getnameinfo(&pllsa->sa, pllsa->sa.sa_len,
1237 addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
1238 fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf);
1243 freeifmaddrs(ifmap);