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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if 0 31 #ifndef lint 32 static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 33 #endif /* not lint */ 34 #endif 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include <sys/types.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 #include <sys/socketvar.h> 43 #include <sys/sysctl.h> 44 #include <sys/time.h> 45 46 #include <net/if.h> 47 #include <net/if_var.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/ethernet.h> 51 #include <net/pfvar.h> 52 #include <net/if_pfsync.h> 53 #include <netinet/in.h> 54 #include <netinet/in_var.h> 55 #include <netipx/ipx.h> 56 #include <netipx/ipx_if.h> 57 #include <arpa/inet.h> 58 59 #include <err.h> 60 #include <errno.h> 61 #include <libutil.h> 62 #ifdef INET6 63 #include <netdb.h> 64 #endif 65 #include <signal.h> 66 #include <stdint.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <unistd.h> 71 72 #include "netstat.h" 73 74 #define YES 1 75 #define NO 0 76 77 static void sidewaysintpr(int, u_long); 78 static void catchalarm(int); 79 80 #ifdef INET6 81 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */ 82 #endif 83 84 /* 85 * Dump pfsync statistics structure. 86 */ 87 void 88 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 89 { 90 struct pfsyncstats pfsyncstat, zerostat; 91 size_t len = sizeof(struct pfsyncstats); 92 93 if (live) { 94 if (zflag) 95 memset(&zerostat, 0, len); 96 if (sysctlbyname("net.inet.pfsync.stats", &pfsyncstat, &len, 97 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 98 if (errno != ENOENT) 99 warn("sysctl: net.inet.pfsync.stats"); 100 return; 101 } 102 } else 103 kread(off, &pfsyncstat, len); 104 105 printf("%s:\n", name); 106 107 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 108 printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 109 #define p2(f, m) if (pfsyncstat.f || sflag <= 1) \ 110 printf(m, (uintmax_t)pfsyncstat.f) 111 112 p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n"); 113 p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n"); 114 p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n"); 115 p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n"); 116 p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n"); 117 p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n"); 118 p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n"); 119 p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n"); 120 p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n"); 121 p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n"); 122 p(pfsyncs_stale, "\t\t%ju stale state%s\n"); 123 p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n"); 124 p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n"); 125 p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n"); 126 p2(pfsyncs_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 127 p2(pfsyncs_oerrors, "\t\t%ju send error\n"); 128 #undef p 129 #undef p2 130 } 131 132 /* 133 * Display a formatted value, or a '-' in the same space. 134 */ 135 static void 136 show_stat(const char *fmt, int width, u_long value, short showvalue) 137 { 138 const char *lsep, *rsep; 139 char newfmt[32]; 140 141 lsep = ""; 142 if (strncmp(fmt, "LS", 2) == 0) { 143 lsep = " "; 144 fmt += 2; 145 } 146 rsep = " "; 147 if (strncmp(fmt, "NRS", 3) == 0) { 148 rsep = ""; 149 fmt += 3; 150 } 151 if (showvalue == 0) { 152 /* Print just dash. */ 153 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 154 printf(newfmt, "-"); 155 return; 156 } 157 158 if (hflag) { 159 char buf[5]; 160 161 /* Format in human readable form. */ 162 humanize_number(buf, sizeof(buf), (int64_t)value, "", 163 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 164 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 165 printf(newfmt, buf); 166 } else { 167 /* Construct the format string. */ 168 sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep); 169 printf(newfmt, value); 170 } 171 } 172 173 /* 174 * Print a description of the network interfaces. 175 */ 176 void 177 intpr(int interval1, u_long ifnetaddr, void (*pfunc)(char *)) 178 { 179 struct ifnet ifnet; 180 struct ifnethead ifnethead; 181 union { 182 struct ifaddr ifa; 183 struct in_ifaddr in; 184 #ifdef INET6 185 struct in6_ifaddr in6; 186 #endif 187 struct ipx_ifaddr ipx; 188 } ifaddr; 189 u_long ifaddraddr; 190 u_long ifaddrfound; 191 u_long ifnetfound; 192 u_long opackets; 193 u_long ipackets; 194 u_long obytes; 195 u_long ibytes; 196 u_long omcasts; 197 u_long imcasts; 198 u_long oerrors; 199 u_long ierrors; 200 u_long idrops; 201 u_long collisions; 202 int drops; 203 struct sockaddr *sa = NULL; 204 char name[IFNAMSIZ]; 205 short network_layer; 206 short link_layer; 207 208 if (ifnetaddr == 0) { 209 printf("ifnet: symbol not defined\n"); 210 return; 211 } 212 if (interval1) { 213 sidewaysintpr(interval1, ifnetaddr); 214 return; 215 } 216 if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead) != 0) 217 return; 218 ifnetaddr = (u_long)TAILQ_FIRST(&ifnethead); 219 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 220 return; 221 222 if (!pfunc) { 223 if (Wflag) 224 printf("%-7.7s", "Name"); 225 else 226 printf("%-5.5s", "Name"); 227 printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s", 228 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 229 if (bflag) 230 printf(" %10.10s","Ibytes"); 231 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 232 if (bflag) 233 printf(" %10.10s","Obytes"); 234 printf(" %5s", "Coll"); 235 if (dflag) 236 printf(" %s", "Drop"); 237 putchar('\n'); 238 } 239 ifaddraddr = 0; 240 while (ifnetaddr || ifaddraddr) { 241 struct sockaddr_in *sockin; 242 #ifdef INET6 243 struct sockaddr_in6 *sockin6; 244 #endif 245 char *cp; 246 int n, m; 247 248 network_layer = 0; 249 link_layer = 0; 250 251 if (ifaddraddr == 0) { 252 ifnetfound = ifnetaddr; 253 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 254 return; 255 strlcpy(name, ifnet.if_xname, sizeof(name)); 256 ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link); 257 if (interface != 0 && strcmp(name, interface) != 0) 258 continue; 259 cp = index(name, '\0'); 260 261 if (pfunc) { 262 (*pfunc)(name); 263 continue; 264 } 265 266 if ((ifnet.if_flags&IFF_UP) == 0) 267 *cp++ = '*'; 268 *cp = '\0'; 269 ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead); 270 } 271 ifaddrfound = ifaddraddr; 272 273 /* 274 * Get the interface stats. These may get 275 * overriden below on a per-interface basis. 276 */ 277 opackets = ifnet.if_opackets; 278 ipackets = ifnet.if_ipackets; 279 obytes = ifnet.if_obytes; 280 ibytes = ifnet.if_ibytes; 281 omcasts = ifnet.if_omcasts; 282 imcasts = ifnet.if_imcasts; 283 oerrors = ifnet.if_oerrors; 284 ierrors = ifnet.if_ierrors; 285 idrops = ifnet.if_iqdrops; 286 collisions = ifnet.if_collisions; 287 drops = ifnet.if_snd.ifq_drops; 288 289 if (ifaddraddr == 0) { 290 if (Wflag) 291 printf("%-7.7s", name); 292 else 293 printf("%-5.5s", name); 294 printf(" %5lu ", ifnet.if_mtu); 295 printf("%-13.13s ", "none"); 296 printf("%-17.17s ", "none"); 297 } else { 298 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr) 299 != 0) { 300 ifaddraddr = 0; 301 continue; 302 } 303 #define CP(x) ((char *)(x)) 304 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 305 CP(&ifaddr); 306 sa = (struct sockaddr *)cp; 307 if (af != AF_UNSPEC && sa->sa_family != af) { 308 ifaddraddr = 309 (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link); 310 continue; 311 } 312 if (Wflag) 313 printf("%-7.7s", name); 314 else 315 printf("%-5.5s", name); 316 printf(" %5lu ", ifnet.if_mtu); 317 switch (sa->sa_family) { 318 case AF_UNSPEC: 319 printf("%-13.13s ", "none"); 320 printf("%-15.15s ", "none"); 321 break; 322 case AF_INET: 323 sockin = (struct sockaddr_in *)sa; 324 #ifdef notdef 325 /* can't use inet_makeaddr because kernel 326 * keeps nets unshifted. 327 */ 328 in = inet_makeaddr(ifaddr.in.ia_subnet, 329 INADDR_ANY); 330 printf("%-13.13s ", netname(in.s_addr, 331 ifaddr.in.ia_subnetmask)); 332 #else 333 printf("%-13.13s ", 334 netname(htonl(ifaddr.in.ia_subnet), 335 ifaddr.in.ia_subnetmask)); 336 #endif 337 printf("%-17.17s ", 338 routename(sockin->sin_addr.s_addr)); 339 340 network_layer = 1; 341 break; 342 #ifdef INET6 343 case AF_INET6: 344 sockin6 = (struct sockaddr_in6 *)sa; 345 in6_fillscopeid(&ifaddr.in6.ia_addr); 346 printf("%-13.13s ", 347 netname6(&ifaddr.in6.ia_addr, 348 &ifaddr.in6.ia_prefixmask.sin6_addr)); 349 in6_fillscopeid(sockin6); 350 getnameinfo(sa, sa->sa_len, addr_buf, 351 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 352 printf("%-17.17s ", addr_buf); 353 354 network_layer = 1; 355 break; 356 #endif /*INET6*/ 357 case AF_IPX: 358 { 359 struct sockaddr_ipx *sipx = 360 (struct sockaddr_ipx *)sa; 361 u_long net; 362 char netnum[10]; 363 364 *(union ipx_net *) &net = sipx->sipx_addr.x_net; 365 sprintf(netnum, "%lx", (u_long)ntohl(net)); 366 printf("ipx:%-8s ", netnum); 367 /* printf("ipx:%-8s ", netname(net, 0L)); */ 368 printf("%-17s ", 369 ipx_phost((struct sockaddr *)sipx)); 370 } 371 372 network_layer = 1; 373 break; 374 375 case AF_APPLETALK: 376 printf("atalk:%-12.12s ",atalk_print(sa,0x10) ); 377 printf("%-11.11s ",atalk_print(sa,0x0b) ); 378 break; 379 case AF_LINK: 380 { 381 struct sockaddr_dl *sdl = 382 (struct sockaddr_dl *)sa; 383 char linknum[10]; 384 cp = (char *)LLADDR(sdl); 385 n = sdl->sdl_alen; 386 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 387 m = printf("%-13.13s ", linknum); 388 } 389 goto hexprint; 390 default: 391 m = printf("(%d)", sa->sa_family); 392 for (cp = sa->sa_len + (char *)sa; 393 --cp > sa->sa_data && (*cp == 0);) {} 394 n = cp - sa->sa_data + 1; 395 cp = sa->sa_data; 396 hexprint: 397 while (--n >= 0) 398 m += printf("%02x%c", *cp++ & 0xff, 399 n > 0 ? ':' : ' '); 400 m = 32 - m; 401 while (m-- > 0) 402 putchar(' '); 403 404 link_layer = 1; 405 break; 406 } 407 408 /* 409 * Fixup the statistics for interfaces that 410 * update stats for their network addresses 411 */ 412 if (network_layer) { 413 opackets = ifaddr.in.ia_ifa.if_opackets; 414 ipackets = ifaddr.in.ia_ifa.if_ipackets; 415 obytes = ifaddr.in.ia_ifa.if_obytes; 416 ibytes = ifaddr.in.ia_ifa.if_ibytes; 417 } 418 419 ifaddraddr = (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link); 420 } 421 422 show_stat("lu", 8, ipackets, link_layer|network_layer); 423 show_stat("lu", 5, ierrors, link_layer); 424 show_stat("lu", 5, idrops, link_layer); 425 if (bflag) 426 show_stat("lu", 10, ibytes, link_layer|network_layer); 427 428 show_stat("lu", 8, opackets, link_layer|network_layer); 429 show_stat("lu", 5, oerrors, link_layer); 430 if (bflag) 431 show_stat("lu", 10, obytes, link_layer|network_layer); 432 433 show_stat("NRSlu", 5, collisions, link_layer); 434 if (dflag) 435 show_stat("LSd", 4, drops, link_layer); 436 putchar('\n'); 437 438 if (aflag && ifaddrfound) { 439 /* 440 * Print family's multicast addresses 441 */ 442 struct ifmultiaddr *multiaddr; 443 struct ifmultiaddr ifma; 444 union { 445 struct sockaddr sa; 446 struct sockaddr_in in; 447 #ifdef INET6 448 struct sockaddr_in6 in6; 449 #endif /* INET6 */ 450 struct sockaddr_dl dl; 451 } msa; 452 const char *fmt; 453 454 TAILQ_FOREACH(multiaddr, &ifnet.if_multiaddrs, ifma_link) { 455 if (kread((u_long)multiaddr, (char *)&ifma, 456 sizeof ifma) != 0) 457 break; 458 multiaddr = &ifma; 459 if (kread((u_long)ifma.ifma_addr, (char *)&msa, 460 sizeof msa) != 0) 461 break; 462 if (msa.sa.sa_family != sa->sa_family) 463 continue; 464 465 fmt = 0; 466 switch (msa.sa.sa_family) { 467 case AF_INET: 468 fmt = routename(msa.in.sin_addr.s_addr); 469 break; 470 #ifdef INET6 471 case AF_INET6: 472 in6_fillscopeid(&msa.in6); 473 getnameinfo(&msa.sa, msa.sa.sa_len, 474 addr_buf, sizeof(addr_buf), 0, 0, 475 NI_NUMERICHOST); 476 printf("%*s %-19.19s(refs: %d)\n", 477 Wflag ? 27 : 25, "", 478 addr_buf, ifma.ifma_refcount); 479 break; 480 #endif /* INET6 */ 481 case AF_LINK: 482 switch (msa.dl.sdl_type) { 483 case IFT_ETHER: 484 case IFT_FDDI: 485 fmt = ether_ntoa( 486 (struct ether_addr *) 487 LLADDR(&msa.dl)); 488 break; 489 } 490 break; 491 } 492 if (fmt) { 493 printf("%*s %-17.17s", 494 Wflag ? 27 : 25, "", fmt); 495 if (msa.sa.sa_family == AF_LINK) { 496 printf(" %8lu", imcasts); 497 printf("%*s", 498 bflag ? 17 : 6, ""); 499 printf(" %8lu", omcasts); 500 } 501 putchar('\n'); 502 } 503 } 504 } 505 } 506 } 507 508 struct iftot { 509 SLIST_ENTRY(iftot) chain; 510 char ift_name[IFNAMSIZ]; /* interface name */ 511 u_long ift_ip; /* input packets */ 512 u_long ift_ie; /* input errors */ 513 u_long ift_id; /* input drops */ 514 u_long ift_op; /* output packets */ 515 u_long ift_oe; /* output errors */ 516 u_long ift_co; /* collisions */ 517 u_int ift_dr; /* drops */ 518 u_long ift_ib; /* input bytes */ 519 u_long ift_ob; /* output bytes */ 520 }; 521 522 u_char signalled; /* set if alarm goes off "early" */ 523 524 /* 525 * Print a running summary of interface statistics. 526 * Repeat display every interval1 seconds, showing statistics 527 * collected over that interval. Assumes that interval1 is non-zero. 528 * First line printed at top of screen is always cumulative. 529 * XXX - should be rewritten to use ifmib(4). 530 */ 531 static void 532 sidewaysintpr(int interval1, u_long off) 533 { 534 struct ifnet ifnet; 535 u_long firstifnet; 536 struct ifnethead ifnethead; 537 struct itimerval interval_it; 538 struct iftot *iftot, *ip, *ipn, *total, *sum, *interesting; 539 int line; 540 int oldmask, first; 541 u_long interesting_off; 542 543 if (kread(off, (char *)&ifnethead, sizeof ifnethead) != 0) 544 return; 545 firstifnet = (u_long)TAILQ_FIRST(&ifnethead); 546 547 if ((iftot = malloc(sizeof(struct iftot))) == NULL) { 548 printf("malloc failed\n"); 549 exit(1); 550 } 551 memset(iftot, 0, sizeof(struct iftot)); 552 553 interesting = NULL; 554 interesting_off = 0; 555 for (off = firstifnet, ip = iftot; off;) { 556 char name[IFNAMSIZ]; 557 558 if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) 559 break; 560 strlcpy(name, ifnet.if_xname, sizeof(name)); 561 if (interface && strcmp(name, interface) == 0) { 562 interesting = ip; 563 interesting_off = off; 564 } 565 snprintf(ip->ift_name, sizeof(ip->ift_name), "(%s)", name); 566 if ((ipn = malloc(sizeof(struct iftot))) == NULL) { 567 printf("malloc failed\n"); 568 exit(1); 569 } 570 memset(ipn, 0, sizeof(struct iftot)); 571 SLIST_NEXT(ip, chain) = ipn; 572 ip = ipn; 573 off = (u_long)TAILQ_NEXT(&ifnet, if_link); 574 } 575 if (interface && interesting == NULL) 576 errx(1, "%s: unknown interface", interface); 577 if ((total = malloc(sizeof(struct iftot))) == NULL) { 578 printf("malloc failed\n"); 579 exit(1); 580 } 581 memset(total, 0, sizeof(struct iftot)); 582 if ((sum = malloc(sizeof(struct iftot))) == NULL) { 583 printf("malloc failed\n"); 584 exit(1); 585 } 586 memset(sum, 0, sizeof(struct iftot)); 587 588 (void)signal(SIGALRM, catchalarm); 589 signalled = NO; 590 interval_it.it_interval.tv_sec = interval1; 591 interval_it.it_interval.tv_usec = 0; 592 interval_it.it_value = interval_it.it_interval; 593 setitimer(ITIMER_REAL, &interval_it, NULL); 594 first = 1; 595 banner: 596 printf("%17s %14s %16s", "input", 597 interesting ? interesting->ift_name : "(Total)", "output"); 598 putchar('\n'); 599 printf("%10s %5s %5s %10s %10s %5s %10s %5s", 600 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 601 "colls"); 602 if (dflag) 603 printf(" %5.5s", "drops"); 604 putchar('\n'); 605 fflush(stdout); 606 line = 0; 607 loop: 608 if (interesting != NULL) { 609 ip = interesting; 610 if (kread(interesting_off, (char *)&ifnet, sizeof ifnet) != 0) { 611 printf("???\n"); 612 exit(1); 613 }; 614 if (!first) { 615 show_stat("lu", 10, ifnet.if_ipackets - ip->ift_ip, 1); 616 show_stat("lu", 5, ifnet.if_ierrors - ip->ift_ie, 1); 617 show_stat("lu", 5, ifnet.if_iqdrops - ip->ift_id, 1); 618 show_stat("lu", 10, ifnet.if_ibytes - ip->ift_ib, 1); 619 show_stat("lu", 10, ifnet.if_opackets - ip->ift_op, 1); 620 show_stat("lu", 5, ifnet.if_oerrors - ip->ift_oe, 1); 621 show_stat("lu", 10, ifnet.if_obytes - ip->ift_ob, 1); 622 show_stat("NRSlu", 5, 623 ifnet.if_collisions - ip->ift_co, 1); 624 if (dflag) 625 show_stat("LSu", 5, 626 ifnet.if_snd.ifq_drops - ip->ift_dr, 1); 627 } 628 ip->ift_ip = ifnet.if_ipackets; 629 ip->ift_ie = ifnet.if_ierrors; 630 ip->ift_id = ifnet.if_iqdrops; 631 ip->ift_ib = ifnet.if_ibytes; 632 ip->ift_op = ifnet.if_opackets; 633 ip->ift_oe = ifnet.if_oerrors; 634 ip->ift_ob = ifnet.if_obytes; 635 ip->ift_co = ifnet.if_collisions; 636 ip->ift_dr = ifnet.if_snd.ifq_drops; 637 } else { 638 sum->ift_ip = 0; 639 sum->ift_ie = 0; 640 sum->ift_id = 0; 641 sum->ift_ib = 0; 642 sum->ift_op = 0; 643 sum->ift_oe = 0; 644 sum->ift_ob = 0; 645 sum->ift_co = 0; 646 sum->ift_dr = 0; 647 for (off = firstifnet, ip = iftot; 648 off && SLIST_NEXT(ip, chain) != NULL; 649 ip = SLIST_NEXT(ip, chain)) { 650 if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) { 651 off = 0; 652 continue; 653 } 654 sum->ift_ip += ifnet.if_ipackets; 655 sum->ift_ie += ifnet.if_ierrors; 656 sum->ift_id += ifnet.if_iqdrops; 657 sum->ift_ib += ifnet.if_ibytes; 658 sum->ift_op += ifnet.if_opackets; 659 sum->ift_oe += ifnet.if_oerrors; 660 sum->ift_ob += ifnet.if_obytes; 661 sum->ift_co += ifnet.if_collisions; 662 sum->ift_dr += ifnet.if_snd.ifq_drops; 663 off = (u_long)TAILQ_NEXT(&ifnet, if_link); 664 } 665 if (!first) { 666 show_stat("lu", 10, sum->ift_ip - total->ift_ip, 1); 667 show_stat("lu", 5, sum->ift_ie - total->ift_ie, 1); 668 show_stat("lu", 5, sum->ift_id - total->ift_id, 1); 669 show_stat("lu", 10, sum->ift_ib - total->ift_ib, 1); 670 show_stat("lu", 10, sum->ift_op - total->ift_op, 1); 671 show_stat("lu", 5, sum->ift_oe - total->ift_oe, 1); 672 show_stat("lu", 10, sum->ift_ob - total->ift_ob, 1); 673 show_stat("NRSlu", 5, sum->ift_co - total->ift_co, 1); 674 if (dflag) 675 show_stat("LSu", 5, 676 sum->ift_dr - total->ift_dr, 1); 677 } 678 *total = *sum; 679 } 680 if (!first) 681 putchar('\n'); 682 fflush(stdout); 683 if ((noutputs != 0) && (--noutputs == 0)) 684 exit(0); 685 oldmask = sigblock(sigmask(SIGALRM)); 686 while (!signalled) 687 sigpause(0); 688 signalled = NO; 689 sigsetmask(oldmask); 690 line++; 691 first = 0; 692 if (line == 21) 693 goto banner; 694 else 695 goto loop; 696 /*NOTREACHED*/ 697 } 698 699 /* 700 * Set a flag to indicate that a signal from the periodic itimer has been 701 * caught. 702 */ 703 static void 704 catchalarm(int signo __unused) 705 { 706 signalled = YES; 707 } 708