ifmcstat.c revision 1.11
1 /* $NetBSD: ifmcstat.c,v 1.11 2012/10/26 16:52:52 seanb 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 union { 144 struct sockaddr_storage st; 145 struct sockaddr_dl sdl; 146 } su; 147 struct sockaddr_dl *sdlp; 148 sdlp = &su.sdl; 149 #endif 150 151 if ((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, buf)) == NULL) { 152 perror("kvm_openfiles"); 153 exit(1); 154 } 155 if (kvm_nlist(kvmd, nl) < 0) { 156 perror("kvm_nlist"); 157 exit(1); 158 } 159 if (nl[N_IFNET].n_value == 0) { 160 printf("symbol %s not found\n", nl[N_IFNET].n_name); 161 exit(1); 162 } 163 KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *); 164 while (ifp) { 165 KREAD(ifp, &ifnet, struct ifnet); 166 printf("%s:\n", if_indextoname(ifnet.if_index, ifnam)); 167 168 #if defined(__NetBSD__) || defined(__OpenBSD__) 169 if6_addrlist(ifnet.if_addrlist.tqh_first); 170 nifp = ifnet.if_list.tqe_next; 171 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 172 if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead)); 173 nifp = ifnet.if_link.tqe_next; 174 #else 175 if6_addrlist(ifnet.if_addrlist); 176 nifp = ifnet.if_next; 177 #endif 178 179 #ifdef __NetBSD__ 180 KREAD(ifnet.if_sadl, sdlp, struct sockaddr_dl); 181 if (sdlp->sdl_type == IFT_ETHER) { 182 /* If we didn't get all of it, try again */ 183 if (sdlp->sdl_len > sizeof(struct sockaddr_dl)) 184 kread((u_long)ifnet.if_sadl, (void *)sdlp, sdlp->sdl_len); 185 printf("\tenaddr %s", 186 ether_ntoa((struct ether_addr *)LLADDR(sdlp))); 187 KREAD(ifp, &ec, struct ethercom); 188 printf(" multicnt %d", ec.ec_multicnt); 189 acmc(ec.ec_multiaddrs.lh_first); 190 printf("\n"); 191 } 192 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 193 /* not supported */ 194 #else 195 if (ifnet.if_type == IFT_ETHER) { 196 KREAD(ifp, &arpcom, struct arpcom); 197 printf("\tenaddr %s", 198 ether_ntoa((struct ether_addr *)arpcom.ac_enaddr)); 199 KREAD(ifp, &arpcom, struct arpcom); 200 printf(" multicnt %d", arpcom.ac_multicnt); 201 #ifdef __OpenBSD__ 202 acmc(arpcom.ac_multiaddrs.lh_first); 203 #else 204 acmc(arpcom.ac_multiaddrs); 205 #endif 206 printf("\n"); 207 } 208 #endif 209 210 ifp = nifp; 211 } 212 213 exit(0); 214 /*NOTREACHED*/ 215 } 216 217 char *ifname(ifp) 218 struct ifnet *ifp; 219 { 220 static char buf[BUFSIZ]; 221 #if defined(__NetBSD__) || defined(__OpenBSD__) 222 struct ifnet ifnet; 223 #endif 224 225 #if defined(__NetBSD__) || defined(__OpenBSD__) 226 KREAD(ifp, &ifnet, struct ifnet); 227 strncpy(buf, ifnet.if_xname, BUFSIZ); 228 #else 229 KREAD(ifp->if_name, buf, IFNAMSIZ); 230 #endif 231 return buf; 232 } 233 234 void kread(addr, buf, len) 235 u_long addr; 236 void *buf; 237 int len; 238 { 239 if (kvm_read(kvmd, addr, buf, len) != len) { 240 perror("kvm_read"); 241 exit(1); 242 } 243 } 244 245 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 246 void acmc(am) 247 struct ether_multi *am; 248 { 249 struct ether_multi em; 250 251 while (am) { 252 KREAD(am, &em, struct ether_multi); 253 254 printf("\n\t\t"); 255 printf("%s -- ", ether_ntoa((struct ether_addr *)em.enm_addrlo)); 256 printf("%s ", ether_ntoa((struct ether_addr *)&em.enm_addrhi)); 257 printf("%d", em.enm_refcount); 258 #if !defined(__NetBSD__) && !defined(__OpenBSD__) 259 am = em.enm_next; 260 #else 261 am = em.enm_list.le_next; 262 #endif 263 } 264 } 265 #endif 266 267 void 268 if6_addrlist(ifap) 269 struct ifaddr *ifap; 270 { 271 struct ifaddr ifa; 272 struct sockaddr sa; 273 struct in6_ifaddr if6a; 274 struct in6_multi *mc = 0; 275 struct ifaddr *ifap0; 276 277 ifap0 = ifap; 278 while (ifap) { 279 KREAD(ifap, &ifa, struct ifaddr); 280 if (ifa.ifa_addr == NULL) 281 goto nextifap; 282 KREAD(ifa.ifa_addr, &sa, struct sockaddr); 283 if (sa.sa_family != PF_INET6) 284 goto nextifap; 285 KREAD(ifap, &if6a, struct in6_ifaddr); 286 printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr)); 287 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) 288 mc = mc ? mc : if6a.ia6_multiaddrs.lh_first; 289 #endif 290 nextifap: 291 #if defined(__NetBSD__) || defined(__OpenBSD__) 292 ifap = ifa.ifa_list.tqe_next; 293 #elif defined(__FreeBSD__) && __FreeBSD__ >= 3 294 ifap = ifa.ifa_link.tqe_next; 295 #else 296 ifap = ifa.ifa_next; 297 #endif /* __FreeBSD__ >= 3 */ 298 } 299 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 300 if (ifap0) { 301 struct ifnet ifnet; 302 struct ifmultiaddr ifm, *ifmp = 0; 303 struct sockaddr_in6 sin6; 304 struct in6_multi in6m; 305 struct sockaddr_dl sdl; 306 int in6_multilist_done = 0; 307 308 KREAD(ifap0, &ifa, struct ifaddr); 309 KREAD(ifa.ifa_ifp, &ifnet, struct ifnet); 310 if (ifnet.if_multiaddrs.lh_first) 311 ifmp = ifnet.if_multiaddrs.lh_first; 312 while (ifmp) { 313 KREAD(ifmp, &ifm, struct ifmultiaddr); 314 if (ifm.ifma_addr == NULL) 315 goto nextmulti; 316 KREAD(ifm.ifma_addr, &sa, struct sockaddr); 317 if (sa.sa_family != AF_INET6) 318 goto nextmulti; 319 (void)in6_multientry((struct in6_multi *) 320 ifm.ifma_protospec); 321 if (ifm.ifma_lladdr == 0) 322 goto nextmulti; 323 KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl); 324 printf("\t\t\tmcast-macaddr %s multicnt %d\n", 325 ether_ntoa((struct ether_addr *)LLADDR(&sdl)), 326 ifm.ifma_refcount); 327 nextmulti: 328 ifmp = ifm.ifma_link.le_next; 329 } 330 } 331 #else 332 if (mc) 333 in6_multilist(mc); 334 #endif 335 #ifdef N_IN6_MK 336 if (nl[N_IN6_MK].n_value != 0) { 337 LIST_HEAD(in6_mktype, multi6_kludge) in6_mk; 338 struct multi6_kludge *mkp, mk; 339 char *nam; 340 341 KREAD(nl[N_IN6_MK].n_value, &in6_mk, struct in6_mktype); 342 KREAD(ifap0, &ifa, struct ifaddr); 343 344 nam = strdup(ifname(ifa.ifa_ifp)); 345 346 for (mkp = in6_mk.lh_first; mkp; mkp = mk.mk_entry.le_next) { 347 KREAD(mkp, &mk, struct multi6_kludge); 348 if (strcmp(nam, ifname(mk.mk_ifp)) == 0 && 349 mk.mk_head.lh_first) { 350 printf("\t(on kludge entry for %s)\n", nam); 351 in6_multilist(mk.mk_head.lh_first); 352 } 353 } 354 355 free(nam); 356 } 357 #endif 358 } 359 360 struct in6_multi * 361 in6_multientry(mc) 362 struct in6_multi *mc; 363 { 364 struct in6_multi multi; 365 366 KREAD(mc, &multi, struct in6_multi); 367 printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr)); 368 printf(" refcnt %u\n", multi.in6m_refcount); 369 return(multi.in6m_entry.le_next); 370 } 371 372 void 373 in6_multilist(mc) 374 struct in6_multi *mc; 375 { 376 while (mc) 377 mc = in6_multientry(mc); 378 } 379 380 #if !defined(__NetBSD__) && !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) 381 static char * 382 ether_ntoa(e) 383 struct ether_addr *e; 384 { 385 static char buf[20]; 386 u_char *p; 387 388 p = (u_char *)e; 389 390 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x", 391 p[0], p[1], p[2], p[3], p[4], p[5]); 392 return buf; 393 } 394 #endif 395
Indexes created Tue Sep 23 14:10:03 GMT 2025