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.pfsync.stats", &pfsyncstat, &len, 97 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 98 if (errno != ENOENT) 99 warn("sysctl: net.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 opackets; 192 u_long ipackets; 193 u_long obytes; 194 u_long ibytes; 195 u_long omcasts; 196 u_long imcasts; 197 u_long oerrors; 198 u_long ierrors; 199 u_long idrops; 200 u_long collisions; 201 int drops; 202 struct sockaddr *sa = NULL; 203 char name[IFNAMSIZ]; 204 short network_layer; 205 short link_layer; 206 207 if (ifnetaddr == 0) { 208 printf("ifnet: symbol not defined\n"); 209 return; 210 } 211 if (interval1) { 212 sidewaysintpr(interval1, ifnetaddr); 213 return; 214 } 215 if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead) != 0) 216 return; 217 ifnetaddr = (u_long)TAILQ_FIRST(&ifnethead); 218 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 219 return; 220 221 if (!pfunc) { 222 if (Wflag) 223 printf("%-7.7s", "Name"); 224 else 225 printf("%-5.5s", "Name"); 226 printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s", 227 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 228 if (bflag) 229 printf(" %10.10s","Ibytes"); 230 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 231 if (bflag) 232 printf(" %10.10s","Obytes"); 233 printf(" %5s", "Coll"); 234 if (dflag) 235 printf(" %s", "Drop"); 236 putchar('\n'); 237 } 238 ifaddraddr = 0; 239 while (ifnetaddr || ifaddraddr) { 240 struct sockaddr_in *sockin; 241 #ifdef INET6 242 struct sockaddr_in6 *sockin6; 243 #endif 244 char *cp; 245 int n, m; 246 247 network_layer = 0; 248 link_layer = 0; 249 250 if (ifaddraddr == 0) { 251 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 252 return; 253 strlcpy(name, ifnet.if_xname, sizeof(name)); 254 ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link); 255 if (interface != 0 && strcmp(name, interface) != 0) 256 continue; 257 cp = strchr(name, '\0'); 258 259 if (pfunc) { 260 (*pfunc)(name); 261 continue; 262 } 263 264 if ((ifnet.if_flags&IFF_UP) == 0) 265 *cp++ = '*'; 266 *cp = '\0'; 267 ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead); 268 } 269 ifaddrfound = ifaddraddr; 270 271 /* 272 * Get the interface stats. These may get 273 * overriden below on a per-interface basis. 274 */ 275 opackets = ifnet.if_opackets; 276 ipackets = ifnet.if_ipackets; 277 obytes = ifnet.if_obytes; 278 ibytes = ifnet.if_ibytes; 279 omcasts = ifnet.if_omcasts; 280 imcasts = ifnet.if_imcasts; 281 oerrors = ifnet.if_oerrors; 282 ierrors = ifnet.if_ierrors; 283 idrops = ifnet.if_iqdrops; 284 collisions = ifnet.if_collisions; 285 drops = ifnet.if_snd.ifq_drops; 286 287 if (ifaddraddr == 0) { 288 if (Wflag) 289 printf("%-7.7s", name); 290 else 291 printf("%-5.5s", name); 292 printf(" %5lu ", ifnet.if_mtu); 293 printf("%-13.13s ", "none"); 294 printf("%-17.17s ", "none"); 295 } else { 296 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr) 297 != 0) { 298 ifaddraddr = 0; 299 continue; 300 } 301 #define CP(x) ((char *)(x)) 302 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 303 CP(&ifaddr); 304 sa = (struct sockaddr *)cp; 305 if (af != AF_UNSPEC && sa->sa_family != af) { 306 ifaddraddr = 307 (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link); 308 continue; 309 } 310 if (Wflag) 311 printf("%-7.7s", name); 312 else 313 printf("%-5.5s", name); 314 printf(" %5lu ", ifnet.if_mtu); 315 switch (sa->sa_family) { 316 case AF_UNSPEC: 317 printf("%-13.13s ", "none"); 318 printf("%-15.15s ", "none"); 319 break; 320 case AF_INET: 321 sockin = (struct sockaddr_in *)sa; 322 #ifdef notdef 323 /* can't use inet_makeaddr because kernel 324 * keeps nets unshifted. 325 */ 326 in = inet_makeaddr(ifaddr.in.ia_subnet, 327 INADDR_ANY); 328 printf("%-13.13s ", netname(in.s_addr, 329 ifaddr.in.ia_subnetmask)); 330 #else 331 printf("%-13.13s ", 332 netname(htonl(ifaddr.in.ia_subnet), 333 ifaddr.in.ia_subnetmask)); 334 #endif 335 printf("%-17.17s ", 336 routename(sockin->sin_addr.s_addr)); 337 338 network_layer = 1; 339 break; 340 #ifdef INET6 341 case AF_INET6: 342 sockin6 = (struct sockaddr_in6 *)sa; 343 in6_fillscopeid(&ifaddr.in6.ia_addr); 344 printf("%-13.13s ", 345 netname6(&ifaddr.in6.ia_addr, 346 &ifaddr.in6.ia_prefixmask.sin6_addr)); 347 in6_fillscopeid(sockin6); 348 getnameinfo(sa, sa->sa_len, addr_buf, 349 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 350 printf("%-17.17s ", addr_buf); 351 352 network_layer = 1; 353 break; 354 #endif /*INET6*/ 355 case AF_IPX: 356 { 357 struct sockaddr_ipx *sipx = 358 (struct sockaddr_ipx *)sa; 359 u_long net; 360 char netnum[10]; 361 362 *(union ipx_net *) &net = sipx->sipx_addr.x_net; 363 sprintf(netnum, "%lx", (u_long)ntohl(net)); 364 printf("ipx:%-8s ", netnum); 365 /* printf("ipx:%-8s ", netname(net, 0L)); */ 366 printf("%-17s ", 367 ipx_phost((struct sockaddr *)sipx)); 368 } 369 370 network_layer = 1; 371 break; 372 373 case AF_APPLETALK: 374 printf("atalk:%-12.12s ",atalk_print(sa,0x10) ); 375 printf("%-11.11s ",atalk_print(sa,0x0b) ); 376 break; 377 case AF_LINK: 378 { 379 struct sockaddr_dl *sdl = 380 (struct sockaddr_dl *)sa; 381 char linknum[10]; 382 cp = (char *)LLADDR(sdl); 383 n = sdl->sdl_alen; 384 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 385 m = printf("%-13.13s ", linknum); 386 } 387 goto hexprint; 388 default: 389 m = printf("(%d)", sa->sa_family); 390 for (cp = sa->sa_len + (char *)sa; 391 --cp > sa->sa_data && (*cp == 0);) {} 392 n = cp - sa->sa_data + 1; 393 cp = sa->sa_data; 394 hexprint: 395 while ((--n >= 0) && (m < 30)) 396 m += printf("%02x%c", *cp++ & 0xff, 397 n > 0 ? ':' : ' '); 398 m = 32 - m; 399 while (m-- > 0) 400 putchar(' '); 401 402 link_layer = 1; 403 break; 404 } 405 406 /* 407 * Fixup the statistics for interfaces that 408 * update stats for their network addresses 409 */ 410 if (network_layer) { 411 opackets = ifaddr.in.ia_ifa.if_opackets; 412 ipackets = ifaddr.in.ia_ifa.if_ipackets; 413 obytes = ifaddr.in.ia_ifa.if_obytes; 414 ibytes = ifaddr.in.ia_ifa.if_ibytes; 415 } 416 417 ifaddraddr = (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link); 418 } 419 420 show_stat("lu", 8, ipackets, link_layer|network_layer); 421 show_stat("lu", 5, ierrors, link_layer); 422 show_stat("lu", 5, idrops, link_layer); 423 if (bflag) 424 show_stat("lu", 10, ibytes, link_layer|network_layer); 425 426 show_stat("lu", 8, opackets, link_layer|network_layer); 427 show_stat("lu", 5, oerrors, link_layer); 428 if (bflag) 429 show_stat("lu", 10, obytes, link_layer|network_layer); 430 431 show_stat("NRSlu", 5, collisions, link_layer); 432 if (dflag) 433 show_stat("LSd", 4, drops, link_layer); 434 putchar('\n'); 435 436 if (aflag && ifaddrfound) { 437 /* 438 * Print family's multicast addresses 439 */ 440 struct ifmultiaddr *multiaddr; 441 struct ifmultiaddr ifma; 442 union { 443 struct sockaddr sa; 444 struct sockaddr_in in; 445 #ifdef INET6 446 struct sockaddr_in6 in6; 447 #endif /* INET6 */ 448 struct sockaddr_dl dl; 449 } msa; 450 const char *fmt; 451 452 TAILQ_FOREACH(multiaddr, &ifnet.if_multiaddrs, ifma_link) { 453 if (kread((u_long)multiaddr, (char *)&ifma, 454 sizeof ifma) != 0) 455 break; 456 multiaddr = &ifma; 457 if (kread((u_long)ifma.ifma_addr, (char *)&msa, 458 sizeof msa) != 0) 459 break; 460 if (msa.sa.sa_family != sa->sa_family) 461 continue; 462 463 fmt = 0; 464 switch (msa.sa.sa_family) { 465 case AF_INET: 466 fmt = routename(msa.in.sin_addr.s_addr); 467 break; 468 #ifdef INET6 469 case AF_INET6: 470 in6_fillscopeid(&msa.in6); 471 getnameinfo(&msa.sa, msa.sa.sa_len, 472 addr_buf, sizeof(addr_buf), 0, 0, 473 NI_NUMERICHOST); 474 printf("%*s %-19.19s(refs: %d)\n", 475 Wflag ? 27 : 25, "", 476 addr_buf, ifma.ifma_refcount); 477 break; 478 #endif /* INET6 */ 479 case AF_LINK: 480 switch (msa.dl.sdl_type) { 481 case IFT_ETHER: 482 case IFT_FDDI: 483 fmt = ether_ntoa( 484 (struct ether_addr *) 485 LLADDR(&msa.dl)); 486 break; 487 } 488 break; 489 } 490 if (fmt) { 491 printf("%*s %-17.17s", 492 Wflag ? 27 : 25, "", fmt); 493 if (msa.sa.sa_family == AF_LINK) { 494 printf(" %8lu", imcasts); 495 printf("%*s", 496 bflag ? 17 : 6, ""); 497 printf(" %8lu", omcasts); 498 } 499 putchar('\n'); 500 } 501 } 502 } 503 } 504 } 505 506 struct iftot { 507 SLIST_ENTRY(iftot) chain; 508 char ift_name[IFNAMSIZ]; /* interface name */ 509 u_long ift_ip; /* input packets */ 510 u_long ift_ie; /* input errors */ 511 u_long ift_id; /* input drops */ 512 u_long ift_op; /* output packets */ 513 u_long ift_oe; /* output errors */ 514 u_long ift_co; /* collisions */ 515 u_int ift_dr; /* drops */ 516 u_long ift_ib; /* input bytes */ 517 u_long ift_ob; /* output bytes */ 518 }; 519 520 u_char signalled; /* set if alarm goes off "early" */ 521 522 /* 523 * Print a running summary of interface statistics. 524 * Repeat display every interval1 seconds, showing statistics 525 * collected over that interval. Assumes that interval1 is non-zero. 526 * First line printed at top of screen is always cumulative. 527 * XXX - should be rewritten to use ifmib(4). 528 */ 529 static void 530 sidewaysintpr(int interval1, u_long off) 531 { 532 struct ifnet ifnet; 533 u_long firstifnet; 534 struct ifnethead ifnethead; 535 struct itimerval interval_it; 536 struct iftot *iftot, *ip, *ipn, *total, *sum, *interesting; 537 int line; 538 int oldmask, first; 539 u_long interesting_off; 540 541 if (kread(off, (char *)&ifnethead, sizeof ifnethead) != 0) 542 return; 543 firstifnet = (u_long)TAILQ_FIRST(&ifnethead); 544 545 if ((iftot = malloc(sizeof(struct iftot))) == NULL) { 546 printf("malloc failed\n"); 547 exit(1); 548 } 549 memset(iftot, 0, sizeof(struct iftot)); 550 551 interesting = NULL; 552 interesting_off = 0; 553 for (off = firstifnet, ip = iftot; off;) { 554 char name[IFNAMSIZ]; 555 556 if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) 557 break; 558 strlcpy(name, ifnet.if_xname, sizeof(name)); 559 if (interface && strcmp(name, interface) == 0) { 560 interesting = ip; 561 interesting_off = off; 562 } 563 snprintf(ip->ift_name, sizeof(ip->ift_name), "(%s)", name); 564 if ((ipn = malloc(sizeof(struct iftot))) == NULL) { 565 printf("malloc failed\n"); 566 exit(1); 567 } 568 memset(ipn, 0, sizeof(struct iftot)); 569 SLIST_NEXT(ip, chain) = ipn; 570 ip = ipn; 571 off = (u_long)TAILQ_NEXT(&ifnet, if_link); 572 } 573 if (interface && interesting == NULL) 574 errx(1, "%s: unknown interface", interface); 575 if ((total = malloc(sizeof(struct iftot))) == NULL) { 576 printf("malloc failed\n"); 577 exit(1); 578 } 579 memset(total, 0, sizeof(struct iftot)); 580 if ((sum = malloc(sizeof(struct iftot))) == NULL) { 581 printf("malloc failed\n"); 582 exit(1); 583 } 584 memset(sum, 0, sizeof(struct iftot)); 585 586 (void)signal(SIGALRM, catchalarm); 587 signalled = NO; 588 interval_it.it_interval.tv_sec = interval1; 589 interval_it.it_interval.tv_usec = 0; 590 interval_it.it_value = interval_it.it_interval; 591 setitimer(ITIMER_REAL, &interval_it, NULL); 592 first = 1; 593 banner: 594 printf("%17s %14s %16s", "input", 595 interesting ? interesting->ift_name : "(Total)", "output"); 596 putchar('\n'); 597 printf("%10s %5s %5s %10s %10s %5s %10s %5s", 598 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 599 "colls"); 600 if (dflag) 601 printf(" %5.5s", "drops"); 602 putchar('\n'); 603 fflush(stdout); 604 line = 0; 605 loop: 606 if (interesting != NULL) { 607 ip = interesting; 608 if (kread(interesting_off, (char *)&ifnet, sizeof ifnet) != 0) { 609 printf("???\n"); 610 exit(1); 611 }; 612 if (!first) { 613 show_stat("lu", 10, ifnet.if_ipackets - ip->ift_ip, 1); 614 show_stat("lu", 5, ifnet.if_ierrors - ip->ift_ie, 1); 615 show_stat("lu", 5, ifnet.if_iqdrops - ip->ift_id, 1); 616 show_stat("lu", 10, ifnet.if_ibytes - ip->ift_ib, 1); 617 show_stat("lu", 10, ifnet.if_opackets - ip->ift_op, 1); 618 show_stat("lu", 5, ifnet.if_oerrors - ip->ift_oe, 1); 619 show_stat("lu", 10, ifnet.if_obytes - ip->ift_ob, 1); 620 show_stat("NRSlu", 5, 621 ifnet.if_collisions - ip->ift_co, 1); 622 if (dflag) 623 show_stat("LSu", 5, 624 ifnet.if_snd.ifq_drops - ip->ift_dr, 1); 625 } 626 ip->ift_ip = ifnet.if_ipackets; 627 ip->ift_ie = ifnet.if_ierrors; 628 ip->ift_id = ifnet.if_iqdrops; 629 ip->ift_ib = ifnet.if_ibytes; 630 ip->ift_op = ifnet.if_opackets; 631 ip->ift_oe = ifnet.if_oerrors; 632 ip->ift_ob = ifnet.if_obytes; 633 ip->ift_co = ifnet.if_collisions; 634 ip->ift_dr = ifnet.if_snd.ifq_drops; 635 } else { 636 sum->ift_ip = 0; 637 sum->ift_ie = 0; 638 sum->ift_id = 0; 639 sum->ift_ib = 0; 640 sum->ift_op = 0; 641 sum->ift_oe = 0; 642 sum->ift_ob = 0; 643 sum->ift_co = 0; 644 sum->ift_dr = 0; 645 for (off = firstifnet, ip = iftot; 646 off && SLIST_NEXT(ip, chain) != NULL; 647 ip = SLIST_NEXT(ip, chain)) { 648 if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) { 649 off = 0; 650 continue; 651 } 652 sum->ift_ip += ifnet.if_ipackets; 653 sum->ift_ie += ifnet.if_ierrors; 654 sum->ift_id += ifnet.if_iqdrops; 655 sum->ift_ib += ifnet.if_ibytes; 656 sum->ift_op += ifnet.if_opackets; 657 sum->ift_oe += ifnet.if_oerrors; 658 sum->ift_ob += ifnet.if_obytes; 659 sum->ift_co += ifnet.if_collisions; 660 sum->ift_dr += ifnet.if_snd.ifq_drops; 661 off = (u_long)TAILQ_NEXT(&ifnet, if_link); 662 } 663 if (!first) { 664 show_stat("lu", 10, sum->ift_ip - total->ift_ip, 1); 665 show_stat("lu", 5, sum->ift_ie - total->ift_ie, 1); 666 show_stat("lu", 5, sum->ift_id - total->ift_id, 1); 667 show_stat("lu", 10, sum->ift_ib - total->ift_ib, 1); 668 show_stat("lu", 10, sum->ift_op - total->ift_op, 1); 669 show_stat("lu", 5, sum->ift_oe - total->ift_oe, 1); 670 show_stat("lu", 10, sum->ift_ob - total->ift_ob, 1); 671 show_stat("NRSlu", 5, sum->ift_co - total->ift_co, 1); 672 if (dflag) 673 show_stat("LSu", 5, 674 sum->ift_dr - total->ift_dr, 1); 675 } 676 *total = *sum; 677 } 678 if (!first) 679 putchar('\n'); 680 fflush(stdout); 681 if ((noutputs != 0) && (--noutputs == 0)) 682 exit(0); 683 oldmask = sigblock(sigmask(SIGALRM)); 684 while (!signalled) 685 sigpause(0); 686 signalled = NO; 687 sigsetmask(oldmask); 688 line++; 689 first = 0; 690 if (line == 21) 691 goto banner; 692 else 693 goto loop; 694 /*NOTREACHED*/ 695 } 696 697 /* 698 * Set a flag to indicate that a signal from the periodic itimer has been 699 * caught. 700 */ 701 static void 702 catchalarm(int signo __unused) 703 { 704 signalled = YES; 705 } 706