usr.sbin/ifmcstat/ifmcstat.c

   1 /*      $NetBSD: ifmcstat.c,v 1.9 2004/11/16 05:59:32 itojun Exp $      */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <fcntl.h>
  35 #include <kvm.h>
  36 #include <nlist.h>
  37 #include <string.h>
  38 #include <limits.h>
  39
  40 #include <sys/types.h>
  41 #include <sys/socket.h>
  42 #include <net/if.h>
  43 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
  44 # include <net/if_var.h>
  45 #endif
  46 #include <net/if_types.h>
  47 #include <net/if_dl.h>
  48 #include <netinet/in.h>
  49 #ifndef __NetBSD__
  50 # ifdef __FreeBSD__
  51 #  define       KERNEL
  52 # endif
  53 # include <netinet/if_ether.h>
  54 # ifdef __FreeBSD__
  55 #  undef        KERNEL
  56 # endif
  57 #else
  58 # include <net/if_ether.h>
  59 #endif
  60 #include <netinet/in_var.h>
  61 #include <arpa/inet.h>
  62
  63 #include <netdb.h>
  64
  65 kvm_t   *kvmd;
  66
  67 struct  nlist nl[] = {
  68 #define N_IFNET 0
  69         { "_ifnet", 0, 0, 0, 0 },
  70 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
  71 #define N_IN6_MK 1
  72         { "_in6_mk", 0, 0, 0, 0 },
  73 #endif
  74         { "", 0, 0, 0, 0 },
  75 };
  76
  77 const char *inet6_n2a __P((struct in6_addr *));
  78 int main __P((void));
  79 char *ifname __P((struct ifnet *));
  80 void kread __P((u_long, void *, int));
  81 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
  82 void acmc __P((struct ether_multi *));
  83 #endif
  84 void if6_addrlist __P((struct ifaddr *));
  85 void in6_multilist __P((struct in6_multi *));
  86 struct in6_multi * in6_multientry __P((struct in6_multi *));
  87
  88 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__)
  89 #ifdef __bsdi__
  90 struct ether_addr {
  91         u_int8_t ether_addr_octet[6];
  92 };
  93 #endif
  94 static char *ether_ntoa __P((struct ether_addr *));
  95 #endif
  96
  97 #define KREAD(addr, buf, type) \
  98         kread((u_long)addr, (void *)buf, sizeof(type))
  99
 100 #ifdef N_IN6_MK
 101 struct multi6_kludge {
 102         LIST_ENTRY(multi6_kludge) mk_entry;
 103         struct ifnet *mk_ifp;
 104         struct in6_multihead mk_head;
 105 };
 106 #endif
 107
 108 const char *inet6_n2a(p)
 109         struct in6_addr *p;
 110 {
 111         static char buf[NI_MAXHOST];
 112         struct sockaddr_in6 sin6;
 113         u_int32_t scopeid;
 114         const int niflags = NI_NUMERICHOST;
 115
 116         memset(&sin6, 0, sizeof(sin6));
 117         sin6.sin6_family = AF_INET6;
 118         sin6.sin6_len = sizeof(struct sockaddr_in6);
 119         sin6.sin6_addr = *p;
 120         if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p)) {
 121                 scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
 122                 if (scopeid) {
 123                         sin6.sin6_scope_id = scopeid;
 124                         sin6.sin6_addr.s6_addr[2] = 0;
 125                         sin6.sin6_addr.s6_addr[3] = 0;
 126                 }
 127         }
 128         if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
 129                         buf, sizeof(buf), NULL, 0, niflags) == 0)
 130                 return buf;
 131         else
 132                 return "(invalid)";
 133 }
 134
 135 int main()
 136 {
 137         char    buf[_POSIX2_LINE_MAX], ifnam[IFNAMSIZ];
 138         struct  ifnet   *ifp, *nifp, ifnet;
 139 #ifndef __NetBSD__
 140         struct  arpcom  arpcom;
 141 #else
 142         struct ethercom ec;
 143         struct sockaddr_dl sdl;
 144 #endif
 145
 146         if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) {
 147                 perror("kvm_openfiles");
 148                 exit(1);
 149         }
 150         if (kvm_nlist(kvmd, nl) < 0) {
 151                 perror("kvm_nlist");
 152                 exit(1);
 153         }
 154         if (nl[N_IFNET].n_value == 0) {
 155                 printf("symbol %s not found\n", nl[N_IFNET].n_name);
 156                 exit(1);
 157         }
 158         KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
 159         while (ifp) {
 160                 KREAD(ifp, &ifnet, struct ifnet);
 161                 printf("%s:\n", if_indextoname(ifnet.if_index, ifnam));
 162
 163 #if defined(__NetBSD__) || defined(__OpenBSD__)
 164                 if6_addrlist(ifnet.if_addrlist.tqh_first);
 165                 nifp = ifnet.if_list.tqe_next;
 166 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3
 167                 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
 168                 nifp = ifnet.if_link.tqe_next;
 169 #else
 170                 if6_addrlist(ifnet.if_addrlist);
 171                 nifp = ifnet.if_next;
 172 #endif
 173
 174 #ifdef __NetBSD__
 175                 KREAD(ifnet.if_sadl, &sdl, struct sockaddr_dl);
 176                 if (sdl.sdl_type == IFT_ETHER) {
 177                         printf("\tenaddr %s",
 178                                ether_ntoa((struct ether_addr *)LLADDR(&sdl)));
 179                         KREAD(ifp, &ec, struct ethercom);
 180                         printf(" multicnt %d", ec.ec_multicnt);
 181                         acmc(ec.ec_multiaddrs.lh_first);
 182                         printf("\n");
 183                 }
 184 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3
 185                 /* not supported */
 186 #else
 187                 if (ifnet.if_type == IFT_ETHER) {
 188                         KREAD(ifp, &arpcom, struct arpcom);
 189                         printf("\tenaddr %s",
 190                             ether_ntoa((struct ether_addr *)arpcom.ac_enaddr));
 191                         KREAD(ifp, &arpcom, struct arpcom);
 192                         printf(" multicnt %d", arpcom.ac_multicnt);
 193 #ifdef __OpenBSD__
 194                         acmc(arpcom.ac_multiaddrs.lh_first);
 195 #else
 196                         acmc(arpcom.ac_multiaddrs);
 197 #endif
 198                         printf("\n");
 199                 }
 200 #endif
 201
 202                 ifp = nifp;
 203         }
 204
 205         exit(0);
 206         /*NOTREACHED*/
 207 }
 208
 209 char *ifname(ifp)
 210         struct ifnet *ifp;
 211 {
 212         static char buf[BUFSIZ];
 213 #if defined(__NetBSD__) || defined(__OpenBSD__)
 214         struct ifnet ifnet;
 215 #endif
 216
 217 #if defined(__NetBSD__) || defined(__OpenBSD__)
 218         KREAD(ifp, &ifnet, struct ifnet);
 219         strncpy(buf, ifnet.if_xname, BUFSIZ);
 220 #else
 221         KREAD(ifp->if_name, buf, IFNAMSIZ);
 222 #endif
 223         return buf;
 224 }
 225
 226 void kread(addr, buf, len)
 227         u_long addr;
 228         void *buf;
 229         int len;
 230 {
 231         if (kvm_read(kvmd, addr, buf, len) != len) {
 232                 perror("kvm_read");
 233                 exit(1);
 234         }
 235 }
 236
 237 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
 238 void acmc(am)
 239         struct ether_multi *am;
 240 {
 241         struct ether_multi em;
 242
 243         while (am) {
 244                 KREAD(am, &em, struct ether_multi);
 245
 246                 printf("\n\t\t");
 247                 printf("%s -- ", ether_ntoa((struct ether_addr *)em.enm_addrlo));
 248                 printf("%s ", ether_ntoa((struct ether_addr *)&em.enm_addrhi));
 249                 printf("%d", em.enm_refcount);
 250 #if !defined(__NetBSD__) && !defined(__OpenBSD__)
 251                 am = em.enm_next;
 252 #else
 253                 am = em.enm_list.le_next;
 254 #endif
 255         }
 256 }
 257 #endif
 258
 259 void
 260 if6_addrlist(ifap)
 261         struct ifaddr *ifap;
 262 {
 263         struct ifaddr ifa;
 264         struct sockaddr sa;
 265         struct in6_ifaddr if6a;
 266         struct in6_multi *mc = 0;
 267         struct ifaddr *ifap0;
 268
 269         ifap0 = ifap;
 270         while (ifap) {
 271                 KREAD(ifap, &ifa, struct ifaddr);
 272                 if (ifa.ifa_addr == NULL)
 273                         goto nextifap;
 274                 KREAD(ifa.ifa_addr, &sa, struct sockaddr);
 275                 if (sa.sa_family != PF_INET6)
 276                         goto nextifap;
 277                 KREAD(ifap, &if6a, struct in6_ifaddr);
 278                 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
 279 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3)
 280                 mc = mc ? mc : if6a.ia6_multiaddrs.lh_first;
 281 #endif
 282         nextifap:
 283 #if defined(__NetBSD__) || defined(__OpenBSD__)
 284                 ifap = ifa.ifa_list.tqe_next;
 285 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3
 286                 ifap = ifa.ifa_link.tqe_next;
 287 #else
 288                 ifap = ifa.ifa_next;
 289 #endif /* __FreeBSD__ >= 3 */
 290         }
 291 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
 292         if (ifap0) {
 293                 struct ifnet ifnet;
 294                 struct ifmultiaddr ifm, *ifmp = 0;
 295                 struct sockaddr_in6 sin6;
 296                 struct in6_multi in6m;
 297                 struct sockaddr_dl sdl;
 298                 int in6_multilist_done = 0;
 299
 300                 KREAD(ifap0, &ifa, struct ifaddr);
 301                 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
 302                 if (ifnet.if_multiaddrs.lh_first)
 303                         ifmp = ifnet.if_multiaddrs.lh_first;
 304                 while (ifmp) {
 305                         KREAD(ifmp, &ifm, struct ifmultiaddr);
 306                         if (ifm.ifma_addr == NULL)
 307                                 goto nextmulti;
 308                         KREAD(ifm.ifma_addr, &sa, struct sockaddr);
 309                         if (sa.sa_family != AF_INET6)
 310                                 goto nextmulti;
 311                         (void)in6_multientry((struct in6_multi *)
 312                                              ifm.ifma_protospec);
 313                         if (ifm.ifma_lladdr == 0)
 314                                 goto nextmulti;
 315                         KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
 316                         printf("\t\t\tmcast-macaddr %s multicnt %d\n",
 317                                ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
 318                                ifm.ifma_refcount);
 319                     nextmulti:
 320                         ifmp = ifm.ifma_link.le_next;
 321                 }
 322         }
 323 #else
 324         if (mc)
 325                 in6_multilist(mc);
 326 #endif
 327 #ifdef N_IN6_MK
 328         if (nl[N_IN6_MK].n_value != 0) {
 329                 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk;
 330                 struct multi6_kludge *mkp, mk;
 331                 char *nam;
 332
 333                 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype);
 334                 KREAD(ifap0, &ifa, struct ifaddr);
 335
 336                 nam = strdup(ifname(ifa.ifa_ifp));
 337
 338                 for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) {
 339                         KREAD(mkp, &mk, struct multi6_kludge);
 340                         if (strcmp(nam, ifname(mk.mk_ifp)) == 0 &&
 341                             mk.mk_head.lh_first) {
 342                                 printf("\t(on kludge entry for %s)\n", nam);
 343                                 in6_multilist(mk.mk_head.lh_first);
 344                         }
 345                 }
 346
 347                 free(nam);
 348         }
 349 #endif
 350 }
 351
 352 struct in6_multi *
 353 in6_multientry(mc)
 354         struct in6_multi *mc;
 355 {
 356         struct in6_multi multi;
 357
 358         KREAD(mc, &multi, struct in6_multi);
 359         printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
 360         printf(" refcnt %u\n", multi.in6m_refcount);
 361         return(multi.in6m_entry.le_next);
 362 }
 363
 364 void
 365 in6_multilist(mc)
 366         struct in6_multi *mc;
 367 {
 368         while (mc)
 369                 mc = in6_multientry(mc);
 370 }
 371
 372 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__)
 373 static char *
 374 ether_ntoa(e)
 375         struct ether_addr *e;
 376 {
 377         static char buf[20];
 378         u_char *p;
 379
 380         p = (u_char *)e;
 381
 382         snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x",
 383                 p[0], p[1], p[2], p[3], p[4], p[5]);
 384         return buf;
 385 }
 386 #endif