[PATCH 1/3] ifmcstat: Import from FreeBSD
Sebastian Huber
sebastian.huber at embedded-brains.de
Thu Sep 10 07:51:42 UTC 2020
---
freebsd/usr.sbin/ifmcstat/ifmcstat.c | 1250 ++++++++++++++++++++++++++
freebsd/usr.sbin/ifmcstat/printb.c | 70 ++
2 files changed, 1320 insertions(+)
create mode 100644 freebsd/usr.sbin/ifmcstat/ifmcstat.c
create mode 100644 freebsd/usr.sbin/ifmcstat/printb.c
diff --git a/freebsd/usr.sbin/ifmcstat/ifmcstat.c b/freebsd/usr.sbin/ifmcstat/ifmcstat.c
new file mode 100644
index 00000000..d28e54bc
--- /dev/null
+++ b/freebsd/usr.sbin/ifmcstat/ifmcstat.c
@@ -0,0 +1,1250 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
+
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2007-2009 Bruce Simpson.
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/socket.h>
+#include <sys/queue.h>
+#include <sys/tree.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/igmp.h>
+#include <netinet/if_ether.h>
+#include <netinet/igmp_var.h>
+
+#ifdef INET6
+#include <netinet/icmp6.h>
+#include <netinet6/mld6_var.h>
+#endif /* INET6 */
+
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include <stddef.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <ifaddrs.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#ifdef KVM
+/*
+ * Currently the KVM build is broken. To be fixed it requires uncovering
+ * large amount of _KERNEL code in include files, and it is also very
+ * tentative to internal kernel ABI changes. If anyone wishes to restore
+ * it, please move it out of src/usr.sbin to src/tools/tools.
+ */
+#include <kvm.h>
+#include <nlist.h>
+#endif
+
+/* XXX: This file currently assumes INET support in the base system. */
+#ifndef INET
+#define INET
+#endif
+
+extern void printb(const char *, unsigned int, const char *);
+
+union sockunion {
+ struct sockaddr_storage ss;
+ struct sockaddr sa;
+ struct sockaddr_dl sdl;
+#ifdef INET
+ struct sockaddr_in sin;
+#endif
+#ifdef INET6
+ struct sockaddr_in6 sin6;
+#endif
+};
+typedef union sockunion sockunion_t;
+
+uint32_t ifindex = 0;
+int af = AF_UNSPEC;
+#ifdef WITH_KVM
+int Kflag = 0;
+#endif
+int vflag = 0;
+
+#define sa_dl_equal(a1, a2) \
+ ((((struct sockaddr_dl *)(a1))->sdl_len == \
+ ((struct sockaddr_dl *)(a2))->sdl_len) && \
+ (bcmp(LLADDR((struct sockaddr_dl *)(a1)), \
+ LLADDR((struct sockaddr_dl *)(a2)), \
+ ((struct sockaddr_dl *)(a1))->sdl_alen) == 0))
+
+/*
+ * Most of the code in this utility is to support the use of KVM for
+ * post-mortem debugging of the multicast code.
+ */
+#ifdef WITH_KVM
+
+#ifdef INET
+static void if_addrlist(struct ifaddr *);
+static struct in_multi *
+ in_multientry(struct in_multi *);
+#endif /* INET */
+
+#ifdef INET6
+static void if6_addrlist(struct ifaddr *);
+static struct in6_multi *
+ in6_multientry(struct in6_multi *);
+#endif /* INET6 */
+
+static void kread(u_long, void *, int);
+static void ll_addrlist(struct ifaddr *);
+
+static int ifmcstat_kvm(const char *kernel, const char *core);
+
+#define KREAD(addr, buf, type) \
+ kread((u_long)addr, (void *)buf, sizeof(type))
+
+kvm_t *kvmd;
+struct nlist nl[] = {
+ { "_ifnet", 0, 0, 0, 0, },
+ { "", 0, 0, 0, 0, },
+};
+#define N_IFNET 0
+
+#endif /* WITH_KVM */
+
+static int ifmcstat_getifmaddrs(void);
+#ifdef INET
+static void in_ifinfo(struct igmp_ifinfo *);
+static const char * inm_mode(u_int mode);
+#endif
+#ifdef INET6
+static void in6_ifinfo(struct mld_ifinfo *);
+static const char * inet6_n2a(struct in6_addr *, uint32_t);
+#endif
+int main(int, char **);
+
+static void
+usage()
+{
+
+ fprintf(stderr,
+ "usage: ifmcstat [-i interface] [-f address family]"
+ " [-v]"
+#ifdef WITH_KVM
+ " [-K] [-M core] [-N system]"
+#endif
+ "\n");
+ exit(EX_USAGE);
+}
+
+static const char *options = "i:f:vM:N:"
+#ifdef WITH_KVM
+ "K"
+#endif
+ ;
+
+int
+main(int argc, char **argv)
+{
+ int c, error;
+#ifdef WITH_KVM
+ const char *kernel = NULL;
+ const char *core = NULL;
+#endif
+
+ while ((c = getopt(argc, argv, options)) != -1) {
+ switch (c) {
+ case 'i':
+ if ((ifindex = if_nametoindex(optarg)) == 0) {
+ fprintf(stderr, "%s: unknown interface\n",
+ optarg);
+ exit(EX_NOHOST);
+ }
+ break;
+
+ case 'f':
+#ifdef INET
+ if (strcmp(optarg, "inet") == 0) {
+ af = AF_INET;
+ break;
+ }
+#endif
+#ifdef INET6
+ if (strcmp(optarg, "inet6") == 0) {
+ af = AF_INET6;
+ break;
+ }
+#endif
+ if (strcmp(optarg, "link") == 0) {
+ af = AF_LINK;
+ break;
+ }
+ fprintf(stderr, "%s: unknown address family\n", optarg);
+ exit(EX_USAGE);
+ /*NOTREACHED*/
+ break;
+
+#ifdef WITH_KVM
+ case 'K':
+ ++Kflag;
+ break;
+#endif
+
+ case 'v':
+ ++vflag;
+ break;
+
+#ifdef WITH_KVM
+ case 'M':
+ core = strdup(optarg);
+ break;
+
+ case 'N':
+ kernel = strdup(optarg);
+ break;
+#endif
+
+ default:
+ usage();
+ break;
+ /*NOTREACHED*/
+ }
+ }
+
+ if (af == AF_LINK && vflag)
+ usage();
+
+#ifdef WITH_KVM
+ if (Kflag)
+ error = ifmcstat_kvm(kernel, core);
+ /*
+ * If KVM failed, and user did not explicitly specify a core file,
+ * or force KVM backend to be disabled, try the sysctl backend.
+ */
+ if (!Kflag || (error != 0 && (core == NULL && kernel == NULL)))
+#endif
+ error = ifmcstat_getifmaddrs();
+ if (error != 0)
+ exit(EX_OSERR);
+
+ exit(EX_OK);
+ /*NOTREACHED*/
+}
+
+#ifdef INET
+
+static void
+in_ifinfo(struct igmp_ifinfo *igi)
+{
+
+ printf("\t");
+ switch (igi->igi_version) {
+ case IGMP_VERSION_1:
+ case IGMP_VERSION_2:
+ case IGMP_VERSION_3:
+ printf("igmpv%d", igi->igi_version);
+ break;
+ default:
+ printf("igmpv?(%d)", igi->igi_version);
+ break;
+ }
+ if (igi->igi_flags)
+ printb(" flags", igi->igi_flags, "\020\1SILENT\2LOOPBACK");
+ if (igi->igi_version == IGMP_VERSION_3) {
+ printf(" rv %u qi %u qri %u uri %u",
+ igi->igi_rv, igi->igi_qi, igi->igi_qri, igi->igi_uri);
+ }
+ if (vflag >= 2) {
+ printf(" v1timer %u v2timer %u v3timer %u",
+ igi->igi_v1_timer, igi->igi_v2_timer, igi->igi_v3_timer);
+ }
+ printf("\n");
+}
+
+static const char *inm_modes[] = {
+ "undefined",
+ "include",
+ "exclude",
+};
+
+static const char *
+inm_mode(u_int mode)
+{
+
+ if (mode >= MCAST_UNDEFINED && mode <= MCAST_EXCLUDE)
+ return (inm_modes[mode]);
+ return (NULL);
+}
+
+#endif /* INET */
+
+#ifdef WITH_KVM
+
+static int
+ifmcstat_kvm(const char *kernel, const char *core)
+{
+ char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
+ struct ifnet *ifp, *nifp, ifnet;
+
+ if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
+ NULL) {
+ perror("kvm_openfiles");
+ return (-1);
+ }
+ if (kvm_nlist(kvmd, nl) < 0) {
+ perror("kvm_nlist");
+ return (-1);
+ }
+ if (nl[N_IFNET].n_value == 0) {
+ printf("symbol %s not found\n", nl[N_IFNET].n_name);
+ return (-1);
+ }
+ KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
+ while (ifp) {
+ KREAD(ifp, &ifnet, struct ifnet);
+ nifp = ifnet.if_link.tqe_next;
+ if (ifindex && ifindex != ifnet.if_index)
+ goto next;
+
+ printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
+#ifdef INET
+ if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
+#endif
+#ifdef INET6
+ if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
+#endif
+ if (vflag)
+ ll_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
+ next:
+ ifp = nifp;
+ }
+
+ return (0);
+}
+
+static void
+kread(u_long addr, void *buf, int len)
+{
+
+ if (kvm_read(kvmd, addr, buf, len) != len) {
+ perror("kvm_read");
+ exit(EX_OSERR);
+ }
+}
+
+static void
+ll_addrlist(struct ifaddr *ifap)
+{
+ char addrbuf[NI_MAXHOST];
+ struct ifaddr ifa;
+ struct sockaddr sa;
+ struct sockaddr_dl sdl;
+ struct ifaddr *ifap0;
+
+ if (af && af != AF_LINK)
+ return;
+
+ ifap0 = ifap;
+ while (ifap) {
+ KREAD(ifap, &ifa, struct ifaddr);
+ if (ifa.ifa_addr == NULL)
+ goto nextifap;
+ KREAD(ifa.ifa_addr, &sa, struct sockaddr);
+ if (sa.sa_family != PF_LINK)
+ goto nextifap;
+ KREAD(ifa.ifa_addr, &sdl, struct sockaddr_dl);
+ if (sdl.sdl_alen == 0)
+ goto nextifap;
+ addrbuf[0] = '\0';
+ getnameinfo((struct sockaddr *)&sdl, sdl.sdl_len,
+ addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
+ printf("\tlink %s\n", addrbuf);
+ nextifap:
+ ifap = ifa.ifa_link.tqe_next;
+ }
+ if (ifap0) {
+ struct ifnet ifnet;
+ struct ifmultiaddr ifm, *ifmp = 0;
+
+ KREAD(ifap0, &ifa, struct ifaddr);
+ KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
+ if (TAILQ_FIRST(&ifnet.if_multiaddrs))
+ ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
+ while (ifmp) {
+ KREAD(ifmp, &ifm, struct ifmultiaddr);
+ if (ifm.ifma_addr == NULL)
+ goto nextmulti;
+ KREAD(ifm.ifma_addr, &sa, struct sockaddr);
+ if (sa.sa_family != AF_LINK)
+ goto nextmulti;
+ KREAD(ifm.ifma_addr, &sdl, struct sockaddr_dl);
+ addrbuf[0] = '\0';
+ getnameinfo((struct sockaddr *)&sdl,
+ sdl.sdl_len, addrbuf, sizeof(addrbuf),
+ NULL, 0, NI_NUMERICHOST);
+ printf("\t\tgroup %s refcnt %d\n",
+ addrbuf, ifm.ifma_refcount);
+ nextmulti:
+ ifmp = TAILQ_NEXT(&ifm, ifma_link);
+ }
+ }
+}
+
+#ifdef INET6
+
+static void
+if6_addrlist(struct ifaddr *ifap)
+{
+ struct ifnet ifnet;
+ struct ifaddr ifa;
+ struct sockaddr sa;
+ struct in6_ifaddr if6a;
+ struct ifaddr *ifap0;
+
+ if (af && af != AF_INET6)
+ return;
+ ifap0 = ifap;
+ while (ifap) {
+ KREAD(ifap, &ifa, struct ifaddr);
+ if (ifa.ifa_addr == NULL)
+ goto nextifap;
+ KREAD(ifa.ifa_addr, &sa, struct sockaddr);
+ if (sa.sa_family != PF_INET6)
+ goto nextifap;
+ KREAD(ifap, &if6a, struct in6_ifaddr);
+ printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr,
+ if6a.ia_addr.sin6_scope_id));
+ /*
+ * Print per-link MLD information, if available.
+ */
+ if (ifa.ifa_ifp != NULL) {
+ struct in6_ifextra ie;
+ struct mld_ifinfo mli;
+
+ KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
+ KREAD(ifnet.if_afdata[AF_INET6], &ie,
+ struct in6_ifextra);
+ if (ie.mld_ifinfo != NULL) {
+ KREAD(ie.mld_ifinfo, &mli, struct mld_ifinfo);
+ in6_ifinfo(&mli);
+ }
+ }
+ nextifap:
+ ifap = ifa.ifa_link.tqe_next;
+ }
+ if (ifap0) {
+ struct ifnet ifnet;
+ struct ifmultiaddr ifm, *ifmp = 0;
+ struct sockaddr_dl sdl;
+
+ KREAD(ifap0, &ifa, struct ifaddr);
+ KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
+ if (TAILQ_FIRST(&ifnet.if_multiaddrs))
+ ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
+ while (ifmp) {
+ KREAD(ifmp, &ifm, struct ifmultiaddr);
+ if (ifm.ifma_addr == NULL)
+ goto nextmulti;
+ KREAD(ifm.ifma_addr, &sa, struct sockaddr);
+ if (sa.sa_family != AF_INET6)
+ goto nextmulti;
+ (void)in6_multientry((struct in6_multi *)
+ ifm.ifma_protospec);
+ if (ifm.ifma_lladdr == 0)
+ goto nextmulti;
+ KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
+ printf("\t\t\tmcast-macaddr %s refcnt %d\n",
+ ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
+ ifm.ifma_refcount);
+ nextmulti:
+ ifmp = TAILQ_NEXT(&ifm, ifma_link);
+ }
+ }
+}
+
+static struct in6_multi *
+in6_multientry(struct in6_multi *mc)
+{
+ struct in6_multi multi;
+
+ KREAD(mc, &multi, struct in6_multi);
+ printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr, 0));
+ printf(" refcnt %u\n", multi.in6m_refcount);
+
+ return (multi.in6m_entry.le_next);
+}
+
+#endif /* INET6 */
+
+#ifdef INET
+
+static void
+if_addrlist(struct ifaddr *ifap)
+{
+ struct ifaddr ifa;
+ struct ifnet ifnet;
+ struct sockaddr sa;
+ struct in_ifaddr ia;
+ struct ifaddr *ifap0;
+
+ if (af && af != AF_INET)
+ return;
+ ifap0 = ifap;
+ while (ifap) {
+ KREAD(ifap, &ifa, struct ifaddr);
+ if (ifa.ifa_addr == NULL)
+ goto nextifap;
+ KREAD(ifa.ifa_addr, &sa, struct sockaddr);
+ if (sa.sa_family != PF_INET)
+ goto nextifap;
+ KREAD(ifap, &ia, struct in_ifaddr);
+ printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr));
+ /*
+ * Print per-link IGMP information, if available.
+ */
+ if (ifa.ifa_ifp != NULL) {
+ struct in_ifinfo ii;
+ struct igmp_ifinfo igi;
+
+ KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
+ KREAD(ifnet.if_afdata[AF_INET], &ii, struct in_ifinfo);
+ if (ii.ii_igmp != NULL) {
+ KREAD(ii.ii_igmp, &igi, struct igmp_ifinfo);
+ in_ifinfo(&igi);
+ }
+ }
+ nextifap:
+ ifap = ifa.ifa_link.tqe_next;
+ }
+ if (ifap0) {
+ struct ifmultiaddr ifm, *ifmp = 0;
+ struct sockaddr_dl sdl;
+
+ KREAD(ifap0, &ifa, struct ifaddr);
+ KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
+ if (TAILQ_FIRST(&ifnet.if_multiaddrs))
+ ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
+ while (ifmp) {
+ KREAD(ifmp, &ifm, struct ifmultiaddr);
+ if (ifm.ifma_addr == NULL)
+ goto nextmulti;
+ KREAD(ifm.ifma_addr, &sa, struct sockaddr);
+ if (sa.sa_family != AF_INET)
+ goto nextmulti;
+ (void)in_multientry((struct in_multi *)
+ ifm.ifma_protospec);
+ if (ifm.ifma_lladdr == 0)
+ goto nextmulti;
+ KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
+ printf("\t\t\tmcast-macaddr %s refcnt %d\n",
+ ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
+ ifm.ifma_refcount);
+ nextmulti:
+ ifmp = TAILQ_NEXT(&ifm, ifma_link);
+ }
+ }
+}
+
+static const char *inm_states[] = {
+ "not-member",
+ "silent",
+ "idle",
+ "lazy",
+ "sleeping",
+ "awakening",
+ "query-pending",
+ "sg-query-pending",
+ "leaving"
+};
+
+static const char *
+inm_state(u_int state)
+{
+
+ if (state >= IGMP_NOT_MEMBER && state <= IGMP_LEAVING_MEMBER)
+ return (inm_states[state]);
+ return (NULL);
+}
+
+#if 0
+static struct ip_msource *
+ims_min_kvm(struct in_multi *pinm)
+{
+ struct ip_msource ims0;
+ struct ip_msource *tmp, *parent;
+
+ parent = NULL;
+ tmp = RB_ROOT(&pinm->inm_srcs);
+ while (tmp) {
+ parent = tmp;
+ KREAD(tmp, &ims0, struct ip_msource);
+ tmp = RB_LEFT(&ims0, ims_link);
+ }
+ return (parent); /* kva */
+}
+
+/* XXX This routine is buggy. See RB_NEXT in sys/tree.h. */
+static struct ip_msource *
+ims_next_kvm(struct ip_msource *ims)
+{
+ struct ip_msource ims0, ims1;
+ struct ip_msource *tmp;
+
+ KREAD(ims, &ims0, struct ip_msource);
+ if (RB_RIGHT(&ims0, ims_link)) {
+ ims = RB_RIGHT(&ims0, ims_link);
+ KREAD(ims, &ims1, struct ip_msource);
+ while ((tmp = RB_LEFT(&ims1, ims_link))) {
+ KREAD(tmp, &ims0, struct ip_msource);
+ ims = RB_LEFT(&ims0, ims_link);
+ }
+ } else {
+ tmp = RB_PARENT(&ims0, ims_link);
+ if (tmp) {
+ KREAD(tmp, &ims1, struct ip_msource);
+ if (ims == RB_LEFT(&ims1, ims_link))
+ ims = tmp;
+ } else {
+ while ((tmp = RB_PARENT(&ims0, ims_link))) {
+ KREAD(tmp, &ims1, struct ip_msource);
+ if (ims == RB_RIGHT(&ims1, ims_link)) {
+ ims = tmp;
+ KREAD(ims, &ims0, struct ip_msource);
+ } else
+ break;
+ }
+ ims = RB_PARENT(&ims0, ims_link);
+ }
+ }
+ return (ims); /* kva */
+}
+
+static void
+inm_print_sources_kvm(struct in_multi *pinm)
+{
+ struct ip_msource ims0;
+ struct ip_msource *ims;
+ struct in_addr src;
+ int cnt;
+ uint8_t fmode;
+
+ cnt = 0;
+ fmode = pinm->inm_st[1].iss_fmode;
+ if (fmode == MCAST_UNDEFINED)
+ return;
+ for (ims = ims_min_kvm(pinm); ims != NULL; ims = ims_next_kvm(ims)) {
+ if (cnt == 0)
+ printf(" srcs ");
+ KREAD(ims, &ims0, struct ip_msource);
+ /* Only print sources in-mode at t1. */
+ if (fmode != ims_get_mode(pinm, ims, 1))
+ continue;
+ src.s_addr = htonl(ims0.ims_haddr);
+ printf("%s%s", (cnt++ == 0 ? "" : ","), inet_ntoa(src));
+ }
+}
+#endif
+
+static struct in_multi *
+in_multientry(struct in_multi *pinm)
+{
+ struct in_multi inm;
+ const char *state, *mode;
+
+ KREAD(pinm, &inm, struct in_multi);
+ printf("\t\tgroup %s", inet_ntoa(inm.inm_addr));
+ printf(" refcnt %u", inm.inm_refcount);
+
+ state = inm_state(inm.inm_state);
+ if (state)
+ printf(" state %s", state);
+ else
+ printf(" state (%d)", inm.inm_state);
+
+ mode = inm_mode(inm.inm_st[1].iss_fmode);
+ if (mode)
+ printf(" mode %s", mode);
+ else
+ printf(" mode (%d)", inm.inm_st[1].iss_fmode);
+
+ if (vflag >= 2) {
+ printf(" asm %u ex %u in %u rec %u",
+ (u_int)inm.inm_st[1].iss_asm,
+ (u_int)inm.inm_st[1].iss_ex,
+ (u_int)inm.inm_st[1].iss_in,
+ (u_int)inm.inm_st[1].iss_rec);
+ }
+
+#if 0
+ /* Buggy. */
+ if (vflag)
+ inm_print_sources_kvm(&inm);
+#endif
+
+ printf("\n");
+ return (NULL);
+}
+
+#endif /* INET */
+
+#endif /* WITH_KVM */
+
+#ifdef INET6
+
+static void
+in6_ifinfo(struct mld_ifinfo *mli)
+{
+
+ printf("\t");
+ switch (mli->mli_version) {
+ case MLD_VERSION_1:
+ case MLD_VERSION_2:
+ printf("mldv%d", mli->mli_version);
+ break;
+ default:
+ printf("mldv?(%d)", mli->mli_version);
+ break;
+ }
+ if (mli->mli_flags)
+ printb(" flags", mli->mli_flags, "\020\1SILENT\2USEALLOW");
+ if (mli->mli_version == MLD_VERSION_2) {
+ printf(" rv %u qi %u qri %u uri %u",
+ mli->mli_rv, mli->mli_qi, mli->mli_qri, mli->mli_uri);
+ }
+ if (vflag >= 2) {
+ printf(" v1timer %u v2timer %u", mli->mli_v1_timer,
+ mli->mli_v2_timer);
+ }
+ printf("\n");
+}
+
+static const char *
+inet6_n2a(struct in6_addr *p, uint32_t scope_id)
+{
+ static char buf[NI_MAXHOST];
+ struct sockaddr_in6 sin6;
+ const int niflags = NI_NUMERICHOST;
+
+ memset(&sin6, 0, sizeof(sin6));
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_len = sizeof(struct sockaddr_in6);
+ sin6.sin6_addr = *p;
+ sin6.sin6_scope_id = scope_id;
+ if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
+ buf, sizeof(buf), NULL, 0, niflags) == 0) {
+ return (buf);
+ } else {
+ return ("(invalid)");
+ }
+}
+#endif /* INET6 */
+
+#ifdef INET
+/*
+ * Retrieve per-group source filter mode and lists via sysctl.
+ */
+static void
+inm_print_sources_sysctl(uint32_t ifindex, struct in_addr gina)
+{
+#define MAX_SYSCTL_TRY 5
+ int mib[7];
+ int ntry = 0;
+ size_t mibsize;
+ size_t len;
+ size_t needed;
+ size_t cnt;
+ int i;
+ char *buf;
+ struct in_addr *pina;
+ uint32_t *p;
+ uint32_t fmode;
+ const char *modestr;
+
+ mibsize = nitems(mib);
+ if (sysctlnametomib("net.inet.ip.mcast.filters", mib, &mibsize) == -1) {
+ perror("sysctlnametomib");
+ return;
+ }
+
+ needed = 0;
+ mib[5] = ifindex;
+ mib[6] = gina.s_addr; /* 32 bits wide */
+ mibsize = nitems(mib);
+ do {
+ if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
+ perror("sysctl net.inet.ip.mcast.filters");
+ return;
+ }
+ if ((buf = malloc(needed)) == NULL) {
+ perror("malloc");
+ return;
+ }
+ if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
+ if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
+ perror("sysctl");
+ goto out_free;
+ }
+ free(buf);
+ buf = NULL;
+ }
+ } while (buf == NULL);
+
+ len = needed;
+ if (len < sizeof(uint32_t)) {
+ perror("sysctl");
+ goto out_free;
+ }
+
+ p = (uint32_t *)buf;
+ fmode = *p++;
+ len -= sizeof(uint32_t);
+
+ modestr = inm_mode(fmode);
+ if (modestr)
+ printf(" mode %s", modestr);
+ else
+ printf(" mode (%u)", fmode);
+
+ if (vflag == 0)
+ goto out_free;
+
+ cnt = len / sizeof(struct in_addr);
+ pina = (struct in_addr *)p;
+
+ for (i = 0; i < cnt; i++) {
+ if (i == 0)
+ printf(" srcs ");
+ fprintf(stdout, "%s%s", (i == 0 ? "" : ","),
+ inet_ntoa(*pina++));
+ len -= sizeof(struct in_addr);
+ }
+ if (len > 0) {
+ fprintf(stderr, "warning: %u trailing bytes from %s\n",
+ (unsigned int)len, "net.inet.ip.mcast.filters");
+ }
+
+out_free:
+ free(buf);
+#undef MAX_SYSCTL_TRY
+}
+
+#endif /* INET */
+
+#ifdef INET6
+/*
+ * Retrieve MLD per-group source filter mode and lists via sysctl.
+ *
+ * Note: The 128-bit IPv6 group address needs to be segmented into
+ * 32-bit pieces for marshaling to sysctl. So the MIB name ends
+ * up looking like this:
+ * a.b.c.d.e.ifindex.g[0].g[1].g[2].g[3]
+ * Assumes that pgroup originated from the kernel, so its components
+ * are already in network-byte order.
+ */
+static void
+in6m_print_sources_sysctl(uint32_t ifindex, struct in6_addr *pgroup)
+{
+#define MAX_SYSCTL_TRY 5
+ char addrbuf[INET6_ADDRSTRLEN];
+ int mib[10];
+ int ntry = 0;
+ int *pi;
+ size_t mibsize;
+ size_t len;
+ size_t needed;
+ size_t cnt;
+ int i;
+ char *buf;
+ struct in6_addr *pina;
+ uint32_t *p;
+ uint32_t fmode;
+ const char *modestr;
+
+ mibsize = nitems(mib);
+ if (sysctlnametomib("net.inet6.ip6.mcast.filters", mib,
+ &mibsize) == -1) {
+ perror("sysctlnametomib");
+ return;
+ }
+
+ needed = 0;
+ mib[5] = ifindex;
+ pi = (int *)pgroup;
+ for (i = 0; i < 4; i++)
+ mib[6 + i] = *pi++;
+
+ mibsize = nitems(mib);
+ do {
+ if (sysctl(mib, mibsize, NULL, &needed, NULL, 0) == -1) {
+ perror("sysctl net.inet6.ip6.mcast.filters");
+ return;
+ }
+ if ((buf = malloc(needed)) == NULL) {
+ perror("malloc");
+ return;
+ }
+ if (sysctl(mib, mibsize, buf, &needed, NULL, 0) == -1) {
+ if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
+ perror("sysctl");
+ goto out_free;
+ }
+ free(buf);
+ buf = NULL;
+ }
+ } while (buf == NULL);
+
+ len = needed;
+ if (len < sizeof(uint32_t)) {
+ perror("sysctl");
+ goto out_free;
+ }
+
+ p = (uint32_t *)buf;
+ fmode = *p++;
+ len -= sizeof(uint32_t);
+
+ modestr = inm_mode(fmode);
+ if (modestr)
+ printf(" mode %s", modestr);
+ else
+ printf(" mode (%u)", fmode);
+
+ if (vflag == 0)
+ goto out_free;
+
+ cnt = len / sizeof(struct in6_addr);
+ pina = (struct in6_addr *)p;
+
+ for (i = 0; i < cnt; i++) {
+ if (i == 0)
+ printf(" srcs ");
+ inet_ntop(AF_INET6, (const char *)pina++, addrbuf,
+ INET6_ADDRSTRLEN);
+ fprintf(stdout, "%s%s", (i == 0 ? "" : ","), addrbuf);
+ len -= sizeof(struct in6_addr);
+ }
+ if (len > 0) {
+ fprintf(stderr, "warning: %u trailing bytes from %s\n",
+ (unsigned int)len, "net.inet6.ip6.mcast.filters");
+ }
+
+out_free:
+ free(buf);
+#undef MAX_SYSCTL_TRY
+}
+#endif /* INET6 */
+
+static int
+ifmcstat_getifmaddrs(void)
+{
+ char thisifname[IFNAMSIZ];
+ char addrbuf[NI_MAXHOST];
+ struct ifaddrs *ifap, *ifa;
+ struct ifmaddrs *ifmap, *ifma;
+ sockunion_t lastifasa;
+ sockunion_t *psa, *pgsa, *pllsa, *pifasa;
+ char *pcolon;
+ char *pafname;
+ uint32_t lastifindex, thisifindex;
+ int error;
+
+ error = 0;
+ ifap = NULL;
+ ifmap = NULL;
+ lastifindex = 0;
+ thisifindex = 0;
+ lastifasa.ss.ss_family = AF_UNSPEC;
+
+ if (getifaddrs(&ifap) != 0) {
+ warn("getifmaddrs");
+ return (-1);
+ }
+
+ if (getifmaddrs(&ifmap) != 0) {
+ warn("getifmaddrs");
+ error = -1;
+ goto out;
+ }
+
+ for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
+ error = 0;
+ if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
+ continue;
+
+ psa = (sockunion_t *)ifma->ifma_name;
+ if (psa->sa.sa_family != AF_LINK) {
+ fprintf(stderr,
+ "WARNING: Kernel returned invalid data.\n");
+ error = -1;
+ break;
+ }
+
+ /* Filter on interface name. */
+ thisifindex = psa->sdl.sdl_index;
+ if (ifindex != 0 && thisifindex != ifindex)
+ continue;
+
+ /* Filter on address family. */
+ pgsa = (sockunion_t *)ifma->ifma_addr;
+ if (af != 0 && pgsa->sa.sa_family != af)
+ continue;
+
+ strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ);
+ pcolon = strchr(thisifname, ':');
+ if (pcolon)
+ *pcolon = '\0';
+
+ /* Only print the banner for the first ifmaddrs entry. */
+ if (lastifindex == 0 || lastifindex != thisifindex) {
+ lastifindex = thisifindex;
+ fprintf(stdout, "%s:\n", thisifname);
+ }
+
+ /*
+ * Currently, multicast joins only take place on the
+ * primary IPv4 address, and only on the link-local IPv6
+ * address, as per IGMPv2/3 and MLDv1/2 semantics.
+ * Therefore, we only look up the primary address on
+ * the first pass.
+ */
+ pifasa = NULL;
+ for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+ if ((strcmp(ifa->ifa_name, thisifname) != 0) ||
+ (ifa->ifa_addr == NULL) ||
+ (ifa->ifa_addr->sa_family != pgsa->sa.sa_family))
+ continue;
+ /*
+ * For AF_INET6 only the link-local address should
+ * be returned. If built without IPv6 support,
+ * skip this address entirely.
+ */
+ pifasa = (sockunion_t *)ifa->ifa_addr;
+ if (pifasa->sa.sa_family == AF_INET6
+#ifdef INET6
+ && !IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr)
+#endif
+ ) {
+ pifasa = NULL;
+ continue;
+ }
+ break;
+ }
+ if (pifasa == NULL)
+ continue; /* primary address not found */
+
+ if (!vflag && pifasa->sa.sa_family == AF_LINK)
+ continue;
+
+ /* Parse and print primary address, if not already printed. */
+ if (lastifasa.ss.ss_family == AF_UNSPEC ||
+ ((lastifasa.ss.ss_family == AF_LINK &&
+ !sa_dl_equal(&lastifasa.sa, &pifasa->sa)) ||
+ !sa_equal(&lastifasa.sa, &pifasa->sa))) {
+
+ switch (pifasa->sa.sa_family) {
+ case AF_INET:
+ pafname = "inet";
+ break;
+ case AF_INET6:
+ pafname = "inet6";
+ break;
+ case AF_LINK:
+ pafname = "link";
+ break;
+ default:
+ pafname = "unknown";
+ break;
+ }
+
+ switch (pifasa->sa.sa_family) {
+ case AF_INET6:
+#ifdef INET6
+ {
+ const char *p =
+ inet6_n2a(&pifasa->sin6.sin6_addr,
+ pifasa->sin6.sin6_scope_id);
+ strlcpy(addrbuf, p, sizeof(addrbuf));
+ break;
+ }
+#else
+ /* FALLTHROUGH */
+#endif
+ case AF_INET:
+ case AF_LINK:
+ error = getnameinfo(&pifasa->sa,
+ pifasa->sa.sa_len,
+ addrbuf, sizeof(addrbuf), NULL, 0,
+ NI_NUMERICHOST);
+ if (error)
+ perror("getnameinfo");
+ break;
+ default:
+ addrbuf[0] = '\0';
+ break;
+ }
+
+ fprintf(stdout, "\t%s %s", pafname, addrbuf);
+#ifdef INET6
+ if (pifasa->sa.sa_family == AF_INET6 &&
+ pifasa->sin6.sin6_scope_id)
+ fprintf(stdout, " scopeid 0x%x",
+ pifasa->sin6.sin6_scope_id);
+#endif
+ fprintf(stdout, "\n");
+#ifdef INET
+ /*
+ * Print per-link IGMP information, if available.
+ */
+ if (pifasa->sa.sa_family == AF_INET) {
+ struct igmp_ifinfo igi;
+ size_t mibsize, len;
+ int mib[5];
+
+ mibsize = nitems(mib);
+ if (sysctlnametomib("net.inet.igmp.ifinfo",
+ mib, &mibsize) == -1) {
+ perror("sysctlnametomib");
+ goto next_ifnet;
+ }
+ mib[mibsize] = thisifindex;
+ len = sizeof(struct igmp_ifinfo);
+ if (sysctl(mib, mibsize + 1, &igi, &len, NULL,
+ 0) == -1) {
+ perror("sysctl net.inet.igmp.ifinfo");
+ goto next_ifnet;
+ }
+ in_ifinfo(&igi);
+ }
+#endif /* INET */
+#ifdef INET6
+ /*
+ * Print per-link MLD information, if available.
+ */
+ if (pifasa->sa.sa_family == AF_INET6) {
+ struct mld_ifinfo mli;
+ size_t mibsize, len;
+ int mib[5];
+
+ mibsize = nitems(mib);
+ if (sysctlnametomib("net.inet6.mld.ifinfo",
+ mib, &mibsize) == -1) {
+ perror("sysctlnametomib");
+ goto next_ifnet;
+ }
+ mib[mibsize] = thisifindex;
+ len = sizeof(struct mld_ifinfo);
+ if (sysctl(mib, mibsize + 1, &mli, &len, NULL,
+ 0) == -1) {
+ perror("sysctl net.inet6.mld.ifinfo");
+ goto next_ifnet;
+ }
+ in6_ifinfo(&mli);
+ }
+#endif /* INET6 */
+#if defined(INET) || defined(INET6)
+next_ifnet:
+#endif
+ lastifasa = *pifasa;
+ }
+
+ /* Print this group address. */
+#ifdef INET6
+ if (pgsa->sa.sa_family == AF_INET6) {
+ const char *p = inet6_n2a(&pgsa->sin6.sin6_addr,
+ pgsa->sin6.sin6_scope_id);
+ strlcpy(addrbuf, p, sizeof(addrbuf));
+ } else
+#endif
+ {
+ error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len,
+ addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
+ if (error)
+ perror("getnameinfo");
+ }
+
+ fprintf(stdout, "\t\tgroup %s", addrbuf);
+#ifdef INET6
+ if (pgsa->sa.sa_family == AF_INET6 &&
+ pgsa->sin6.sin6_scope_id)
+ fprintf(stdout, " scopeid 0x%x",
+ pgsa->sin6.sin6_scope_id);
+#endif
+#ifdef INET
+ if (pgsa->sa.sa_family == AF_INET) {
+ inm_print_sources_sysctl(thisifindex,
+ pgsa->sin.sin_addr);
+ }
+#endif
+#ifdef INET6
+ if (pgsa->sa.sa_family == AF_INET6) {
+ in6m_print_sources_sysctl(thisifindex,
+ &pgsa->sin6.sin6_addr);
+ }
+#endif
+ fprintf(stdout, "\n");
+
+ /* Link-layer mapping, if present. */
+ pllsa = (sockunion_t *)ifma->ifma_lladdr;
+ if (pllsa != NULL) {
+ error = getnameinfo(&pllsa->sa, pllsa->sa.sa_len,
+ addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
+ fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf);
+ }
+ }
+out:
+ if (ifmap != NULL)
+ freeifmaddrs(ifmap);
+ if (ifap != NULL)
+ freeifaddrs(ifap);
+
+ return (error);
+}
diff --git a/freebsd/usr.sbin/ifmcstat/printb.c b/freebsd/usr.sbin/ifmcstat/printb.c
new file mode 100644
index 00000000..d94923fe
--- /dev/null
+++ b/freebsd/usr.sbin/ifmcstat/printb.c
@@ -0,0 +1,70 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <assert.h>
+#include <stdio.h>
+
+/*
+ * Print a value a la the %b format of the kernel's printf
+ */
+void
+printb(const char *s, unsigned int v, const char *bits)
+{
+ int i, any = 0;
+ char c;
+
+ assert(bits != NULL);
+ if (*bits == 8)
+ printf("%s=%o", s, v);
+ else
+ printf("%s=%x", s, v);
+ bits++;
+ if (bits) {
+ putchar('<');
+ while ((i = *bits++) != '\0') {
+ if (v & (1 << (i-1))) {
+ if (any)
+ putchar(',');
+ any = 1;
+ for (; (c = *bits) > 32; bits++)
+ putchar(c);
+ } else
+ for (; *bits > 32; bits++)
+ ;
+ }
+ putchar('>');
+ }
+}
--
2.26.2
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