1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /* 36 static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 37 */ 38 static const char rcsid[] = 39 "$Id: if.c,v 1.25 1999/04/20 22:04:31 billf Exp $"; 40 #endif /* not lint */ 41 42 #include <sys/types.h> 43 #include <sys/protosw.h> 44 #include <sys/socket.h> 45 #include <sys/sysctl.h> 46 #include <sys/time.h> 47 48 #include <net/if.h> 49 #include <net/if_var.h> 50 #include <net/if_dl.h> 51 #include <net/if_types.h> 52 #include <net/bridge.h> 53 #include <net/ethernet.h> 54 #include <netinet/in.h> 55 #include <netinet/in_var.h> 56 #include <netipx/ipx.h> 57 #include <netipx/ipx_if.h> 58 #ifdef NS 59 #include <netns/ns.h> 60 #include <netns/ns_if.h> 61 #endif 62 #ifdef ISO 63 #include <netiso/iso.h> 64 #include <netiso/iso_var.h> 65 #endif 66 #include <arpa/inet.h> 67 68 #include <signal.h> 69 #include <stdio.h> 70 #include <string.h> 71 #include <unistd.h> 72 73 #include "netstat.h" 74 75 #define YES 1 76 #define NO 0 77 78 static void sidewaysintpr __P((u_int, u_long)); 79 static void catchalarm __P((int)); 80 81 void 82 bdg_stats(u_long dummy, char *name) /* print bridge statistics */ 83 { 84 int i, slen ; 85 struct bdg_stats s ; 86 int mib[4] ; 87 88 slen = sizeof(s); 89 90 mib[0] = CTL_NET ; 91 mib[1] = PF_LINK ; 92 mib[2] = IFT_ETHER ; 93 mib[3] = PF_BDG ; 94 if (sysctl(mib,4, &s,&slen,NULL,0)==-1) 95 return ; /* no bridging */ 96 printf("-- Bridging statistics (%s) --\n", name) ; 97 printf( 98 "Name In Out Forward Drop Bcast Mcast Local Unknown\n"); 99 for (i = 0 ; i < 16 ; i++) { 100 if (s.s[i].name[0]) 101 printf("%-6s %9d%9d%9d%9d%9d%9d%9d%9d\n", 102 s.s[i].name, 103 s.s[i].p_in[(int)BDG_IN], 104 s.s[i].p_in[(int)BDG_OUT], 105 s.s[i].p_in[(int)BDG_FORWARD], 106 s.s[i].p_in[(int)BDG_DROP], 107 s.s[i].p_in[(int)BDG_BCAST], 108 s.s[i].p_in[(int)BDG_MCAST], 109 s.s[i].p_in[(int)BDG_LOCAL], 110 s.s[i].p_in[(int)BDG_UNKNOWN] ); 111 } 112 } 113 114 /* 115 * Print a description of the network interfaces. 116 */ 117 void 118 intpr(interval, ifnetaddr) 119 int interval; 120 u_long ifnetaddr; 121 { 122 struct ifnet ifnet; 123 struct ifnethead ifnethead; 124 union { 125 struct ifaddr ifa; 126 struct in_ifaddr in; 127 struct ipx_ifaddr ipx; 128 #ifdef NS 129 struct ns_ifaddr ns; 130 #endif 131 #ifdef ISO 132 struct iso_ifaddr iso; 133 #endif 134 } ifaddr; 135 u_long ifaddraddr; 136 u_long ifaddrfound; 137 u_long ifnetfound; 138 struct sockaddr *sa; 139 char name[32], tname[16]; 140 141 if (ifnetaddr == 0) { 142 printf("ifnet: symbol not defined\n"); 143 return; 144 } 145 if (interval) { 146 sidewaysintpr((unsigned)interval, ifnetaddr); 147 return; 148 } 149 if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead)) 150 return; 151 ifnetaddr = (u_long)ifnethead.tqh_first; 152 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet)) 153 return; 154 155 printf("%-5.5s %-5.5s %-13.13s %-15.15s %8.8s %5.5s", 156 "Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs"); 157 if (bflag) 158 printf(" %10.10s","Ibytes"); 159 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 160 if (bflag) 161 printf(" %10.10s","Obytes"); 162 printf(" %5s", "Coll"); 163 if (tflag) 164 printf(" %s", "Time"); 165 if (dflag) 166 printf(" %s", "Drop"); 167 putchar('\n'); 168 ifaddraddr = 0; 169 while (ifnetaddr || ifaddraddr) { 170 struct sockaddr_in *sin; 171 register char *cp; 172 int n, m; 173 174 if (ifaddraddr == 0) { 175 ifnetfound = ifnetaddr; 176 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) || 177 kread((u_long)ifnet.if_name, tname, 16)) 178 return; 179 tname[15] = '\0'; 180 ifnetaddr = (u_long)ifnet.if_link.tqe_next; 181 snprintf(name, 32, "%s%d", tname, ifnet.if_unit); 182 if (interface != 0 && (strcmp(name, interface) != 0)) 183 continue; 184 cp = index(name, '\0'); 185 if ((ifnet.if_flags&IFF_UP) == 0) 186 *cp++ = '*'; 187 *cp = '\0'; 188 ifaddraddr = (u_long)ifnet.if_addrhead.tqh_first; 189 } 190 printf("%-5.5s %-5lu ", name, ifnet.if_mtu); 191 ifaddrfound = ifaddraddr; 192 if (ifaddraddr == 0) { 193 printf("%-13.13s ", "none"); 194 printf("%-15.15s ", "none"); 195 } else { 196 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) { 197 ifaddraddr = 0; 198 continue; 199 } 200 #define CP(x) ((char *)(x)) 201 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 202 CP(&ifaddr); sa = (struct sockaddr *)cp; 203 switch (sa->sa_family) { 204 case AF_UNSPEC: 205 printf("%-13.13s ", "none"); 206 printf("%-15.15s ", "none"); 207 break; 208 case AF_INET: 209 sin = (struct sockaddr_in *)sa; 210 #ifdef notdef 211 /* can't use inet_makeaddr because kernel 212 * keeps nets unshifted. 213 */ 214 in = inet_makeaddr(ifaddr.in.ia_subnet, 215 INADDR_ANY); 216 printf("%-13.13s ", netname(in.s_addr, 217 ifaddr.in.ia_subnetmask)); 218 #else 219 printf("%-13.13s ", 220 netname(htonl(ifaddr.in.ia_subnet), 221 ifaddr.in.ia_subnetmask)); 222 #endif 223 printf("%-15.15s ", 224 routename(sin->sin_addr.s_addr)); 225 break; 226 case AF_IPX: 227 { 228 struct sockaddr_ipx *sipx = 229 (struct sockaddr_ipx *)sa; 230 u_long net; 231 char netnum[10]; 232 233 *(union ipx_net *) &net = sipx->sipx_addr.x_net; 234 sprintf(netnum, "%lx", (u_long)ntohl(net)); 235 printf("ipx:%-8s ", netnum); 236 /* printf("ipx:%-8s ", netname(net, 0L)); */ 237 printf("%-15s ", 238 ipx_phost((struct sockaddr *)sipx)); 239 } 240 break; 241 242 case AF_APPLETALK: 243 printf("atalk:%-12.12s ",atalk_print(sa,0x10) ); 244 printf("%-9.9s ",atalk_print(sa,0x0b) ); 245 break; 246 #ifdef NS 247 case AF_NS: 248 { 249 struct sockaddr_ns *sns = 250 (struct sockaddr_ns *)sa; 251 u_long net; 252 char netnum[10]; 253 254 *(union ns_net *) &net = sns->sns_addr.x_net; 255 sprintf(netnum, "%lxH", ntohl(net)); 256 upHex(netnum); 257 printf("ns:%-8s ", netnum); 258 printf("%-15s ", 259 ns_phost((struct sockaddr *)sns)); 260 } 261 break; 262 #endif 263 case AF_LINK: 264 { 265 struct sockaddr_dl *sdl = 266 (struct sockaddr_dl *)sa; 267 cp = (char *)LLADDR(sdl); 268 n = sdl->sdl_alen; 269 } 270 m = printf("%-11.11s ", "<Link>"); 271 goto hexprint; 272 default: 273 m = printf("(%d)", sa->sa_family); 274 for (cp = sa->sa_len + (char *)sa; 275 --cp > sa->sa_data && (*cp == 0);) {} 276 n = cp - sa->sa_data + 1; 277 cp = sa->sa_data; 278 hexprint: 279 while (--n >= 0) 280 m += printf("%02x%c", *cp++ & 0xff, 281 n > 0 ? '.' : ' '); 282 m = 30 - m; 283 while (m-- > 0) 284 putchar(' '); 285 break; 286 } 287 ifaddraddr = (u_long)ifaddr.ifa.ifa_link.tqe_next; 288 } 289 printf("%8lu %5lu ", 290 ifnet.if_ipackets, ifnet.if_ierrors); 291 if (bflag) 292 printf("%10lu ", ifnet.if_ibytes); 293 printf("%8lu %5lu ", 294 ifnet.if_opackets, ifnet.if_oerrors); 295 if (bflag) 296 printf("%10lu ", ifnet.if_obytes); 297 printf("%5lu", ifnet.if_collisions); 298 if (tflag) 299 printf(" %3d", ifnet.if_timer); 300 if (dflag) 301 printf(" %3d", ifnet.if_snd.ifq_drops); 302 putchar('\n'); 303 if (aflag && ifaddrfound) { 304 /* 305 * Print family's multicast addresses 306 */ 307 u_long multiaddr; 308 struct ifmultiaddr ifma; 309 union { 310 struct sockaddr sa; 311 struct sockaddr_in in; 312 struct sockaddr_dl dl; 313 } msa; 314 const char *fmt; 315 316 for(multiaddr = (u_long)ifnet.if_multiaddrs.lh_first; 317 multiaddr; 318 multiaddr = (u_long)ifma.ifma_link.le_next) { 319 if (kread(multiaddr, (char *)&ifma, 320 sizeof ifma)) 321 break; 322 if (kread((u_long)ifma.ifma_addr, (char *)&msa, 323 sizeof msa)) 324 break; 325 if (msa.sa.sa_family != sa->sa_family) 326 continue; 327 328 fmt = 0; 329 switch (msa.sa.sa_family) { 330 case AF_INET: 331 fmt = routename(msa.in.sin_addr.s_addr); 332 break; 333 334 case AF_LINK: 335 switch (ifnet.if_type) { 336 case IFT_ETHER: 337 case IFT_FDDI: 338 fmt = ether_ntoa( 339 (struct ether_addr *) 340 LLADDR(&msa.dl)); 341 break; 342 } 343 break; 344 } 345 if (fmt) 346 printf("%23s %s\n", "", fmt); 347 } 348 } 349 } 350 } 351 352 #define MAXIF 10 353 struct iftot { 354 char ift_name[16]; /* interface name */ 355 u_int ift_ip; /* input packets */ 356 u_int ift_ie; /* input errors */ 357 u_int ift_op; /* output packets */ 358 u_int ift_oe; /* output errors */ 359 u_int ift_co; /* collisions */ 360 u_int ift_dr; /* drops */ 361 u_int ift_ib; /* input bytes */ 362 u_int ift_ob; /* output bytes */ 363 } iftot[MAXIF]; 364 365 u_char signalled; /* set if alarm goes off "early" */ 366 367 /* 368 * Print a running summary of interface statistics. 369 * Repeat display every interval seconds, showing statistics 370 * collected over that interval. Assumes that interval is non-zero. 371 * First line printed at top of screen is always cumulative. 372 * XXX - should be rewritten to use ifmib(4). 373 */ 374 static void 375 sidewaysintpr(interval, off) 376 unsigned interval; 377 u_long off; 378 { 379 struct ifnet ifnet; 380 u_long firstifnet; 381 struct ifnethead ifnethead; 382 register struct iftot *ip, *total; 383 register int line; 384 struct iftot *lastif, *sum, *interesting; 385 int oldmask, first; 386 u_long interesting_off; 387 388 if (kread(off, (char *)&ifnethead, sizeof ifnethead)) 389 return; 390 firstifnet = (u_long)ifnethead.tqh_first; 391 392 lastif = iftot; 393 sum = iftot + MAXIF - 1; 394 total = sum - 1; 395 interesting = NULL; 396 interesting_off = 0; 397 for (off = firstifnet, ip = iftot; off;) { 398 char name[16], tname[16]; 399 400 if (kread(off, (char *)&ifnet, sizeof ifnet)) 401 break; 402 if (kread((u_long)ifnet.if_name, tname, 16)) 403 break; 404 tname[15] = '\0'; 405 snprintf(name, 16, "%s%d", tname, ifnet.if_unit); 406 if (interface && strcmp(name, interface) == 0) { 407 interesting = ip; 408 interesting_off = off; 409 } 410 snprintf(ip->ift_name, 16, "(%s)", name);; 411 ip++; 412 if (ip >= iftot + MAXIF - 2) 413 break; 414 off = (u_long) ifnet.if_link.tqe_next; 415 } 416 lastif = ip; 417 418 (void)signal(SIGALRM, catchalarm); 419 signalled = NO; 420 (void)alarm(interval); 421 for (ip = iftot; ip < iftot + MAXIF; ip++) { 422 ip->ift_ip = 0; 423 ip->ift_ie = 0; 424 ip->ift_ib = 0; 425 ip->ift_op = 0; 426 ip->ift_oe = 0; 427 ip->ift_ob = 0; 428 ip->ift_co = 0; 429 ip->ift_dr = 0; 430 } 431 first = 1; 432 banner: 433 printf("%17s %14s %16s", "input", 434 interesting ? interesting->ift_name : "(Total)", "output"); 435 putchar('\n'); 436 printf("%10s %5s %10s %10s %5s %10s %5s", 437 "packets", "errs", "bytes", "packets", "errs", "bytes", "colls"); 438 if (dflag) 439 printf(" %5.5s", "drops"); 440 putchar('\n'); 441 fflush(stdout); 442 line = 0; 443 loop: 444 if (interesting != NULL) { 445 ip = interesting; 446 if (kread(interesting_off, (char *)&ifnet, sizeof ifnet)) { 447 printf("???\n"); 448 exit(1); 449 }; 450 if (!first) { 451 printf("%10lu %5lu %10lu %10lu %5lu %10lu %5lu", 452 ifnet.if_ipackets - ip->ift_ip, 453 ifnet.if_ierrors - ip->ift_ie, 454 ifnet.if_ibytes - ip->ift_ib, 455 ifnet.if_opackets - ip->ift_op, 456 ifnet.if_oerrors - ip->ift_oe, 457 ifnet.if_obytes - ip->ift_ob, 458 ifnet.if_collisions - ip->ift_co); 459 if (dflag) 460 printf(" %5u", ifnet.if_snd.ifq_drops - ip->ift_dr); 461 } 462 ip->ift_ip = ifnet.if_ipackets; 463 ip->ift_ie = ifnet.if_ierrors; 464 ip->ift_ib = ifnet.if_ibytes; 465 ip->ift_op = ifnet.if_opackets; 466 ip->ift_oe = ifnet.if_oerrors; 467 ip->ift_ob = ifnet.if_obytes; 468 ip->ift_co = ifnet.if_collisions; 469 ip->ift_dr = ifnet.if_snd.ifq_drops; 470 } else { 471 sum->ift_ip = 0; 472 sum->ift_ie = 0; 473 sum->ift_ib = 0; 474 sum->ift_op = 0; 475 sum->ift_oe = 0; 476 sum->ift_ob = 0; 477 sum->ift_co = 0; 478 sum->ift_dr = 0; 479 for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) { 480 if (kread(off, (char *)&ifnet, sizeof ifnet)) { 481 off = 0; 482 continue; 483 } 484 sum->ift_ip += ifnet.if_ipackets; 485 sum->ift_ie += ifnet.if_ierrors; 486 sum->ift_ib += ifnet.if_ibytes; 487 sum->ift_op += ifnet.if_opackets; 488 sum->ift_oe += ifnet.if_oerrors; 489 sum->ift_ob += ifnet.if_obytes; 490 sum->ift_co += ifnet.if_collisions; 491 sum->ift_dr += ifnet.if_snd.ifq_drops; 492 off = (u_long) ifnet.if_link.tqe_next; 493 } 494 if (!first) { 495 printf("%10u %5u %10u %10u %5u %10u %5u", 496 sum->ift_ip - total->ift_ip, 497 sum->ift_ie - total->ift_ie, 498 sum->ift_ib - total->ift_ib, 499 sum->ift_op - total->ift_op, 500 sum->ift_oe - total->ift_oe, 501 sum->ift_ob - total->ift_ob, 502 sum->ift_co - total->ift_co); 503 if (dflag) 504 printf(" %5u", sum->ift_dr - total->ift_dr); 505 } 506 *total = *sum; 507 } 508 if (!first) 509 putchar('\n'); 510 fflush(stdout); 511 oldmask = sigblock(sigmask(SIGALRM)); 512 if (! signalled) { 513 sigpause(0); 514 } 515 sigsetmask(oldmask); 516 signalled = NO; 517 (void)alarm(interval); 518 line++; 519 first = 0; 520 if (line == 21) 521 goto banner; 522 else 523 goto loop; 524 /*NOTREACHED*/ 525 } 526 527 /* 528 * Called if an interval expires before sidewaysintpr has completed a loop. 529 * Sets a flag to not wait for the alarm. 530 */ 531 static void 532 catchalarm(signo) 533 int signo; 534 { 535 signalled = YES; 536 } 537