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 #if 0 35 #ifndef lint 36 static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 37 #endif /* not lint */ 38 #endif 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/types.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 #include <sys/socketvar.h> 47 #include <sys/sysctl.h> 48 #include <sys/time.h> 49 50 #include <net/if.h> 51 #include <net/if_var.h> 52 #include <net/if_dl.h> 53 #include <net/if_types.h> 54 #include <net/ethernet.h> 55 #include <net/pfvar.h> 56 #include <net/if_pfsync.h> 57 #include <netinet/in.h> 58 #include <netinet/in_var.h> 59 #include <netipx/ipx.h> 60 #include <netipx/ipx_if.h> 61 #include <arpa/inet.h> 62 63 #include <err.h> 64 #include <errno.h> 65 #include <libutil.h> 66 #include <signal.h> 67 #include <stdint.h> 68 #include <stdio.h> 69 #include <stdlib.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(int, u_long); 79 static void catchalarm(int); 80 81 #ifdef INET6 82 static char ntop_buf[INET6_ADDRSTRLEN]; /* for inet_ntop() */ 83 #endif 84 85 /* 86 * Dump pfsync statistics structure. 87 */ 88 void 89 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 90 { 91 struct pfsyncstats pfsyncstat, zerostat; 92 size_t len = sizeof(struct pfsyncstats); 93 94 if (live) { 95 if (zflag) 96 memset(&zerostat, 0, len); 97 if (sysctlbyname("net.inet.pfsync.stats", &pfsyncstat, &len, 98 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 99 if (errno != ENOENT) 100 warn("sysctl: net.inet.pfsync.stats"); 101 return; 102 } 103 } else 104 kread(off, &pfsyncstat, len); 105 106 printf("%s:\n", name); 107 108 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 109 printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 110 #define p2(f, m) if (pfsyncstat.f || sflag <= 1) \ 111 printf(m, (uintmax_t)pfsyncstat.f) 112 113 p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n"); 114 p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n"); 115 p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n"); 116 p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n"); 117 p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n"); 118 p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n"); 119 p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n"); 120 p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n"); 121 p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n"); 122 p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n"); 123 p(pfsyncs_stale, "\t\t%ju stale state%s\n"); 124 p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n"); 125 p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n"); 126 p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n"); 127 p2(pfsyncs_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 128 p2(pfsyncs_oerrors, "\t\t%ju send error\n"); 129 #undef p 130 #undef p2 131 } 132 133 /* 134 * Display a formatted value, or a '-' in the same space. 135 */ 136 static void 137 show_stat(const char *fmt, int width, u_long value, short showvalue) 138 { 139 const char *lsep, *rsep; 140 char newfmt[32]; 141 142 lsep = ""; 143 if (strncmp(fmt, "LS", 2) == 0) { 144 lsep = " "; 145 fmt += 2; 146 } 147 rsep = " "; 148 if (strncmp(fmt, "NRS", 3) == 0) { 149 rsep = ""; 150 fmt += 3; 151 } 152 if (showvalue == 0) { 153 /* Print just dash. */ 154 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 155 printf(newfmt, "-"); 156 return; 157 } 158 159 if (hflag) { 160 char buf[5]; 161 162 /* Format in human readable form. */ 163 humanize_number(buf, sizeof(buf), (int64_t)value, "", 164 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 165 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 166 printf(newfmt, buf); 167 } else { 168 /* Construct the format string. */ 169 sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep); 170 printf(newfmt, value); 171 } 172 } 173 174 /* 175 * Print a description of the network interfaces. 176 */ 177 void 178 intpr(int interval1, u_long ifnetaddr, void (*pfunc)(char *)) 179 { 180 struct ifnet ifnet; 181 struct ifnethead ifnethead; 182 union { 183 struct ifaddr ifa; 184 struct in_ifaddr in; 185 #ifdef INET6 186 struct in6_ifaddr in6; 187 #endif 188 struct ipx_ifaddr ipx; 189 } ifaddr; 190 u_long ifaddraddr; 191 u_long ifaddrfound; 192 u_long ifnetfound; 193 u_long opackets; 194 u_long ipackets; 195 u_long obytes; 196 u_long ibytes; 197 u_long omcasts; 198 u_long imcasts; 199 u_long oerrors; 200 u_long ierrors; 201 u_long idrops; 202 u_long collisions; 203 int drops; 204 struct sockaddr *sa = NULL; 205 char name[IFNAMSIZ]; 206 short network_layer; 207 short link_layer; 208 209 if (ifnetaddr == 0) { 210 printf("ifnet: symbol not defined\n"); 211 return; 212 } 213 if (interval1) { 214 sidewaysintpr(interval1, ifnetaddr); 215 return; 216 } 217 if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead) != 0) 218 return; 219 ifnetaddr = (u_long)TAILQ_FIRST(&ifnethead); 220 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 221 return; 222 223 if (!pfunc) { 224 if (Wflag) 225 printf("%-7.7s", "Name"); 226 else 227 printf("%-5.5s", "Name"); 228 printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s", 229 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 230 if (bflag) 231 printf(" %10.10s","Ibytes"); 232 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 233 if (bflag) 234 printf(" %10.10s","Obytes"); 235 printf(" %5s", "Coll"); 236 if (dflag) 237 printf(" %s", "Drop"); 238 putchar('\n'); 239 } 240 ifaddraddr = 0; 241 while (ifnetaddr || ifaddraddr) { 242 struct sockaddr_in *sockin; 243 #ifdef INET6 244 struct sockaddr_in6 *sockin6; 245 #endif 246 char *cp; 247 int n, m; 248 249 network_layer = 0; 250 link_layer = 0; 251 252 if (ifaddraddr == 0) { 253 ifnetfound = ifnetaddr; 254 if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0) 255 return; 256 strlcpy(name, ifnet.if_xname, sizeof(name)); 257 ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link); 258 if (interface != 0 && strcmp(name, interface) != 0) 259 continue; 260 cp = index(name, '\0'); 261 262 if (pfunc) { 263 (*pfunc)(name); 264 continue; 265 } 266 267 if ((ifnet.if_flags&IFF_UP) == 0) 268 *cp++ = '*'; 269 *cp = '\0'; 270 ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead); 271 } 272 ifaddrfound = ifaddraddr; 273 274 /* 275 * Get the interface stats. These may get 276 * overriden below on a per-interface basis. 277 */ 278 opackets = ifnet.if_opackets; 279 ipackets = ifnet.if_ipackets; 280 obytes = ifnet.if_obytes; 281 ibytes = ifnet.if_ibytes; 282 omcasts = ifnet.if_omcasts; 283 imcasts = ifnet.if_imcasts; 284 oerrors = ifnet.if_oerrors; 285 ierrors = ifnet.if_ierrors; 286 idrops = ifnet.if_iqdrops; 287 collisions = ifnet.if_collisions; 288 drops = ifnet.if_snd.ifq_drops; 289 290 if (ifaddraddr == 0) { 291 if (Wflag) 292 printf("%-7.7s", name); 293 else 294 printf("%-5.5s", name); 295 printf(" %5lu ", ifnet.if_mtu); 296 printf("%-13.13s ", "none"); 297 printf("%-17.17s ", "none"); 298 } else { 299 if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr) 300 != 0) { 301 ifaddraddr = 0; 302 continue; 303 } 304 #define CP(x) ((char *)(x)) 305 cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) + 306 CP(&ifaddr); 307 sa = (struct sockaddr *)cp; 308 if (af != AF_UNSPEC && sa->sa_family != af) { 309 ifaddraddr = 310 (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link); 311 continue; 312 } 313 if (Wflag) 314 printf("%-7.7s", name); 315 else 316 printf("%-5.5s", name); 317 printf(" %5lu ", ifnet.if_mtu); 318 switch (sa->sa_family) { 319 case AF_UNSPEC: 320 printf("%-13.13s ", "none"); 321 printf("%-15.15s ", "none"); 322 break; 323 case AF_INET: 324 sockin = (struct sockaddr_in *)sa; 325 #ifdef notdef 326 /* can't use inet_makeaddr because kernel 327 * keeps nets unshifted. 328 */ 329 in = inet_makeaddr(ifaddr.in.ia_subnet, 330 INADDR_ANY); 331 printf("%-13.13s ", netname(in.s_addr, 332 ifaddr.in.ia_subnetmask)); 333 #else 334 printf("%-13.13s ", 335 netname(htonl(ifaddr.in.ia_subnet), 336 ifaddr.in.ia_subnetmask)); 337 #endif 338 printf("%-17.17s ", 339 routename(sockin->sin_addr.s_addr)); 340 341 network_layer = 1; 342 break; 343 #ifdef INET6 344 case AF_INET6: 345 sockin6 = (struct sockaddr_in6 *)sa; 346 printf("%-13.13s ", 347 netname6(&ifaddr.in6.ia_addr, 348 &ifaddr.in6.ia_prefixmask.sin6_addr)); 349 printf("%-17.17s ", 350 inet_ntop(AF_INET6, 351 &sockin6->sin6_addr, 352 ntop_buf, sizeof(ntop_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 printf("%*s %-19.19s(refs: %d)\n", 473 Wflag ? 27 : 25, "", 474 inet_ntop(AF_INET6, 475 &msa.in6.sin6_addr, 476 ntop_buf, 477 sizeof(ntop_buf)), 478 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_ib = ifnet.if_ibytes; 631 ip->ift_op = ifnet.if_opackets; 632 ip->ift_oe = ifnet.if_oerrors; 633 ip->ift_ob = ifnet.if_obytes; 634 ip->ift_co = ifnet.if_collisions; 635 ip->ift_dr = ifnet.if_snd.ifq_drops; 636 } else { 637 sum->ift_ip = 0; 638 sum->ift_ie = 0; 639 sum->ift_id = 0; 640 sum->ift_ib = 0; 641 sum->ift_op = 0; 642 sum->ift_oe = 0; 643 sum->ift_ob = 0; 644 sum->ift_co = 0; 645 sum->ift_dr = 0; 646 for (off = firstifnet, ip = iftot; 647 off && SLIST_NEXT(ip, chain) != NULL; 648 ip = SLIST_NEXT(ip, chain)) { 649 if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) { 650 off = 0; 651 continue; 652 } 653 sum->ift_ip += ifnet.if_ipackets; 654 sum->ift_ie += ifnet.if_ierrors; 655 sum->ift_id += ifnet.if_iqdrops; 656 sum->ift_ib += ifnet.if_ibytes; 657 sum->ift_op += ifnet.if_opackets; 658 sum->ift_oe += ifnet.if_oerrors; 659 sum->ift_ob += ifnet.if_obytes; 660 sum->ift_co += ifnet.if_collisions; 661 sum->ift_dr += ifnet.if_snd.ifq_drops; 662 off = (u_long)TAILQ_NEXT(&ifnet, if_link); 663 } 664 if (!first) { 665 show_stat("lu", 10, sum->ift_ip - total->ift_ip, 1); 666 show_stat("lu", 5, sum->ift_ie - total->ift_ie, 1); 667 show_stat("lu", 5, sum->ift_id - total->ift_id, 1); 668 show_stat("lu", 10, sum->ift_ib - total->ift_ib, 1); 669 show_stat("lu", 10, sum->ift_op - total->ift_op, 1); 670 show_stat("lu", 5, sum->ift_oe - total->ift_oe, 1); 671 show_stat("lu", 10, sum->ift_ob - total->ift_ob, 1); 672 show_stat("NRSlu", 5, sum->ift_co - total->ift_co, 1); 673 if (dflag) 674 show_stat("LSu", 5, 675 sum->ift_dr - total->ift_dr, 1); 676 } 677 *total = *sum; 678 } 679 if (!first) 680 putchar('\n'); 681 fflush(stdout); 682 if ((noutputs != 0) && (--noutputs == 0)) 683 exit(0); 684 oldmask = sigblock(sigmask(SIGALRM)); 685 while (!signalled) 686 sigpause(0); 687 signalled = NO; 688 sigsetmask(oldmask); 689 line++; 690 first = 0; 691 if (line == 21) 692 goto banner; 693 else 694 goto loop; 695 /*NOTREACHED*/ 696 } 697 698 /* 699 * Set a flag to indicate that a signal from the periodic itimer has been 700 * caught. 701 */ 702 static void 703 catchalarm(int signo __unused) 704 { 705 signalled = YES; 706 } 707