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