1 /*- 2 * Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org> 3 * Copyright (c) 1983, 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 4. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #if 0 32 #ifndef lint 33 static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 34 #endif /* not lint */ 35 #endif 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <sys/types.h> 41 #include <sys/protosw.h> 42 #include <sys/socket.h> 43 #include <sys/socketvar.h> 44 #include <sys/sysctl.h> 45 #include <sys/time.h> 46 47 #include <net/if.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/ethernet.h> 51 #include <netinet/in.h> 52 #include <netinet/in_var.h> 53 #include <arpa/inet.h> 54 #ifdef PF 55 #include <net/pfvar.h> 56 #include <net/if_pfsync.h> 57 #endif 58 59 #include <err.h> 60 #include <errno.h> 61 #include <ifaddrs.h> 62 #include <libutil.h> 63 #ifdef INET6 64 #include <netdb.h> 65 #endif 66 #include <signal.h> 67 #include <stdbool.h> 68 #include <stdint.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <sysexits.h> 73 #include <unistd.h> 74 #include <libxo/xo.h> 75 76 #include "netstat.h" 77 78 static void sidewaysintpr(void); 79 80 #ifdef PF 81 static const char* pfsyncacts[] = { 82 /* PFSYNC_ACT_CLR */ "clear all request", 83 /* PFSYNC_ACT_INS */ "state insert", 84 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 85 /* PFSYNC_ACT_UPD */ "state update", 86 /* PFSYNC_ACT_UPD_C */ "compressed state update", 87 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 88 /* PFSYNC_ACT_DEL */ "state delete", 89 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 90 /* PFSYNC_ACT_INS_F */ "fragment insert", 91 /* PFSYNC_ACT_DEL_F */ "fragment delete", 92 /* PFSYNC_ACT_BUS */ "bulk update mark", 93 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 94 /* PFSYNC_ACT_EOF */ "end of frame mark", 95 }; 96 97 static const char* pfsyncacts_name[] = { 98 /* PFSYNC_ACT_CLR */ "clear-all-request", 99 /* PFSYNC_ACT_INS */ "state-insert", 100 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 101 /* PFSYNC_ACT_UPD */ "state-update", 102 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 103 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 104 /* PFSYNC_ACT_DEL */ "state-delete", 105 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 106 /* PFSYNC_ACT_INS_F */ "fragment-insert", 107 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 108 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 109 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 110 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 111 }; 112 113 static void 114 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 115 { 116 int i; 117 118 xo_open_list(list); 119 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 120 if (*a || sflag <= 1) { 121 xo_open_instance(list); 122 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 123 pfsyncacts_name[i], (uintmax_t)(*a), 124 pfsyncacts[i], plural(*a), desc); 125 xo_close_instance(list); 126 } 127 } 128 xo_close_list(list); 129 } 130 131 /* 132 * Dump pfsync statistics structure. 133 */ 134 void 135 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 136 { 137 struct pfsyncstats pfsyncstat, zerostat; 138 size_t len = sizeof(struct pfsyncstats); 139 140 if (live) { 141 if (zflag) 142 memset(&zerostat, 0, len); 143 if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len, 144 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 145 if (errno != ENOENT) 146 warn("sysctl: net.pfsync.stats"); 147 return; 148 } 149 } else 150 kread(off, &pfsyncstat, len); 151 152 xo_emit("{T:/%s}:\n", name); 153 xo_open_container(name); 154 155 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 156 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 157 158 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 159 "{N:/packet%s received (IPv4)}\n"); 160 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 161 "{N:/packet%s received (IPv6)}\n"); 162 pfsync_acts_stats("input-histogram", "received", 163 &pfsyncstat.pfsyncs_iacts[0]); 164 p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} " 165 "{N:/packet%s discarded for bad interface}\n"); 166 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 167 "{N:/packet%s discarded for bad ttl}\n"); 168 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 169 "{N:/packet%s shorter than header}\n"); 170 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 171 "{N:/packet%s discarded for bad version}\n"); 172 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 173 "{N:/packet%s discarded for bad HMAC}\n"); 174 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 175 "{N:/packet%s discarded for bad action}\n"); 176 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 177 "{N:/packet%s discarded for short packet}\n"); 178 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 179 "{N:/state%s discarded for bad values}\n"); 180 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 181 "{N:/stale state%s}\n"); 182 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 183 "{N:/failed state lookup\\/insert%s}\n"); 184 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 185 "{N:/packet%s sent (IPv4})\n"); 186 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 187 "{N:/packet%s sent (IPv6})\n"); 188 pfsync_acts_stats("output-histogram", "sent", 189 &pfsyncstat.pfsyncs_oacts[0]); 190 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 191 "{N:/failure%s due to mbuf memory error}\n"); 192 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 193 "{N:/send error%s}\n"); 194 #undef p 195 xo_close_container(name); 196 } 197 #endif /* PF */ 198 199 /* 200 * Display a formatted value, or a '-' in the same space. 201 */ 202 static void 203 show_stat(const char *fmt, int width, const char *name, 204 u_long value, short showvalue) 205 { 206 const char *lsep, *rsep; 207 char newfmt[64]; 208 209 lsep = ""; 210 if (strncmp(fmt, "LS", 2) == 0) { 211 lsep = " "; 212 fmt += 2; 213 } 214 rsep = " "; 215 if (strncmp(fmt, "NRS", 3) == 0) { 216 rsep = ""; 217 fmt += 3; 218 } 219 if (showvalue == 0) { 220 /* Print just dash. */ 221 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 222 return; 223 } 224 225 /* 226 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 227 * take args... so we need to conditionally include it in the format. 228 */ 229 #define maybe_pad(pad) do { \ 230 if (strlen(pad)) { \ 231 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 232 xo_emit(newfmt); \ 233 } \ 234 } while (0) 235 236 if (hflag) { 237 char buf[5]; 238 239 /* Format in human readable form. */ 240 humanize_number(buf, sizeof(buf), (int64_t)value, "", 241 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 242 maybe_pad(lsep); 243 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 244 xo_emit(newfmt, buf); 245 maybe_pad(rsep); 246 } else { 247 /* Construct the format string. */ 248 maybe_pad(lsep); 249 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 250 name, width, fmt); 251 xo_emit(newfmt, value); 252 maybe_pad(rsep); 253 } 254 } 255 256 /* 257 * Find next multiaddr for a given interface name. 258 */ 259 static struct ifmaddrs * 260 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 261 { 262 263 for(; ifma != NULL; ifma = ifma->ifma_next) { 264 struct sockaddr_dl *sdl; 265 266 sdl = (struct sockaddr_dl *)ifma->ifma_name; 267 if (ifma->ifma_addr->sa_family == family && 268 strcmp(sdl->sdl_data, name) == 0) 269 break; 270 } 271 272 return (ifma); 273 } 274 275 /* 276 * Print a description of the network interfaces. 277 */ 278 void 279 intpr(void (*pfunc)(char *), int af) 280 { 281 struct ifaddrs *ifap, *ifa; 282 struct ifmaddrs *ifmap, *ifma; 283 284 if (interval) 285 return sidewaysintpr(); 286 287 if (getifaddrs(&ifap) != 0) 288 err(EX_OSERR, "getifaddrs"); 289 if (aflag && getifmaddrs(&ifmap) != 0) 290 err(EX_OSERR, "getifmaddrs"); 291 292 xo_open_list("interface"); 293 if (!pfunc) { 294 if (Wflag) 295 xo_emit("{T:/%-7.7s}", "Name"); 296 else 297 xo_emit("{T:/%-5.5s}", "Name"); 298 xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} " 299 "{T:/%5.5s} {T:/%5.5s}", 300 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 301 if (bflag) 302 xo_emit(" {T:/%10.10s}","Ibytes"); 303 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 304 if (bflag) 305 xo_emit(" {T:/%10.10s}","Obytes"); 306 xo_emit(" {T:/%5s}", "Coll"); 307 if (dflag) 308 xo_emit(" {T:/%s}", "Drop"); 309 xo_emit("\n"); 310 } 311 312 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 313 bool network = false, link = false; 314 char *name, *xname, buf[IFNAMSIZ+1]; 315 316 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 317 continue; 318 319 name = ifa->ifa_name; 320 321 if (pfunc) { 322 323 (*pfunc)(name); 324 325 /* 326 * Skip all ifaddrs belonging to same interface. 327 */ 328 while(ifa->ifa_next != NULL && 329 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 330 ifa = ifa->ifa_next; 331 } 332 continue; 333 } 334 335 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 336 continue; 337 338 xo_open_instance("interface"); 339 340 if ((ifa->ifa_flags & IFF_UP) == 0) { 341 xname = stpcpy(buf, name); 342 *xname++ = '*'; 343 *xname = '\0'; 344 xname = buf; 345 } else 346 xname = name; 347 348 if (Wflag) 349 xo_emit("{etk:name/%s}{e:flags/0x%x}{d:/%7.7s}", 350 name, ifa->ifa_flags, xname); 351 else 352 xo_emit("{etk:name/%s}{e:flags/0x%x}{d:/%5.5s}", 353 name, ifa->ifa_flags, xname); 354 355 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 356 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa)); 357 #undef IFA_MTU 358 359 switch (ifa->ifa_addr->sa_family) { 360 case AF_UNSPEC: 361 xo_emit("{:network/%-13.13s} ", "none"); 362 xo_emit("{:address/%-15.15s} ", "none"); 363 break; 364 case AF_INET: 365 if (Wflag) { 366 xo_emit("{t:network/%-13s} ", 367 netname(ifa->ifa_addr, ifa->ifa_netmask)); 368 xo_emit("{t:address/%-17s} ", 369 routename(ifa->ifa_addr, numeric_addr)); 370 } else { 371 xo_emit("{t:network/%-13.13s} ", 372 netname(ifa->ifa_addr, ifa->ifa_netmask)); 373 xo_emit("{t:address/%-17.17s} ", 374 routename(ifa->ifa_addr, numeric_addr)); 375 } 376 377 network = true; 378 break; 379 #ifdef INET6 380 case AF_INET6: 381 if (Wflag) { 382 xo_emit("{t:network/%-13s} ", 383 netname(ifa->ifa_addr, ifa->ifa_netmask)); 384 xo_emit("{t:address/%-17s} ", 385 routename(ifa->ifa_addr, numeric_addr)); 386 } else { 387 xo_emit("{t:network/%-13.13s} ", 388 netname(ifa->ifa_addr, ifa->ifa_netmask)); 389 xo_emit("{t:address/%-17.17s} ", 390 routename(ifa->ifa_addr, numeric_addr)); 391 } 392 393 network = true; 394 break; 395 #endif /* INET6 */ 396 case AF_LINK: 397 { 398 struct sockaddr_dl *sdl; 399 char linknum[10]; 400 401 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 402 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 403 xo_emit("{t:network/%-13.13s} ", linknum); 404 if (sdl->sdl_nlen == 0 && 405 sdl->sdl_alen == 0 && 406 sdl->sdl_slen == 0) 407 xo_emit("{P: }"); 408 else 409 xo_emit("{:address/%*s}", 410 32 - 3 * sdl->sdl_alen, 411 routename(ifa->ifa_addr, 1)); 412 link = true; 413 break; 414 } 415 } 416 417 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 418 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 419 link|network); 420 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), link); 421 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), link); 422 if (bflag) 423 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 424 link|network); 425 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 426 link|network); 427 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link); 428 if (bflag) 429 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 430 link|network); 431 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), link); 432 if (dflag) 433 show_stat("LSlu", 5, "dropped-packets", 434 IFA_STAT(oqdrops), link); 435 xo_emit("\n"); 436 437 if (!aflag) { 438 xo_close_instance("interface"); 439 continue; 440 } 441 442 /* 443 * Print family's multicast addresses. 444 */ 445 xo_open_list("multicast-address"); 446 for (ifma = next_ifma(ifmap, ifa->ifa_name, 447 ifa->ifa_addr->sa_family); 448 ifma != NULL; 449 ifma = next_ifma(ifma, ifa->ifa_name, 450 ifa->ifa_addr->sa_family)) { 451 const char *fmt = NULL; 452 453 xo_open_instance("multicast-address"); 454 switch (ifma->ifma_addr->sa_family) { 455 case AF_LINK: 456 { 457 struct sockaddr_dl *sdl; 458 459 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 460 if (sdl->sdl_type != IFT_ETHER && 461 sdl->sdl_type != IFT_FDDI) 462 break; 463 } 464 /* FALLTHROUGH */ 465 case AF_INET: 466 #ifdef INET6 467 case AF_INET6: 468 #endif /* INET6 */ 469 fmt = routename(ifma->ifma_addr, numeric_addr); 470 break; 471 } 472 if (fmt) { 473 if (Wflag) 474 xo_emit("{P:/%27s }" 475 "{t:address/%-17s/}", "", fmt); 476 else 477 xo_emit("{P:/%25s }" 478 "{t:address/%-17.17s/}", "", fmt); 479 if (ifma->ifma_addr->sa_family == AF_LINK) { 480 xo_emit(" {:received-packets/%8lu}", 481 IFA_STAT(imcasts)); 482 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 483 xo_emit(" {:sent-packets/%8lu}", 484 IFA_STAT(omcasts)); 485 } 486 xo_emit("\n"); 487 } 488 xo_close_instance("multicast-address"); 489 ifma = ifma->ifma_next; 490 } 491 xo_close_list("multicast-address"); 492 xo_close_instance("interface"); 493 } 494 xo_close_list("interface"); 495 496 freeifaddrs(ifap); 497 if (aflag) 498 freeifmaddrs(ifmap); 499 } 500 501 struct iftot { 502 u_long ift_ip; /* input packets */ 503 u_long ift_ie; /* input errors */ 504 u_long ift_id; /* input drops */ 505 u_long ift_op; /* output packets */ 506 u_long ift_oe; /* output errors */ 507 u_long ift_od; /* output drops */ 508 u_long ift_co; /* collisions */ 509 u_long ift_ib; /* input bytes */ 510 u_long ift_ob; /* output bytes */ 511 }; 512 513 /* 514 * Obtain stats for interface(s). 515 */ 516 static void 517 fill_iftot(struct iftot *st) 518 { 519 struct ifaddrs *ifap, *ifa; 520 bool found = false; 521 522 if (getifaddrs(&ifap) != 0) 523 xo_err(EX_OSERR, "getifaddrs"); 524 525 bzero(st, sizeof(*st)); 526 527 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 528 if (ifa->ifa_addr->sa_family != AF_LINK) 529 continue; 530 if (interface) { 531 if (strcmp(ifa->ifa_name, interface) == 0) 532 found = true; 533 else 534 continue; 535 } 536 537 st->ift_ip += IFA_STAT(ipackets); 538 st->ift_ie += IFA_STAT(ierrors); 539 st->ift_id += IFA_STAT(iqdrops); 540 st->ift_ib += IFA_STAT(ibytes); 541 st->ift_op += IFA_STAT(opackets); 542 st->ift_oe += IFA_STAT(oerrors); 543 st->ift_od += IFA_STAT(oqdrops); 544 st->ift_ob += IFA_STAT(obytes); 545 st->ift_co += IFA_STAT(collisions); 546 } 547 548 if (interface && found == false) 549 xo_err(EX_DATAERR, "interface %s not found", interface); 550 551 freeifaddrs(ifap); 552 } 553 554 /* 555 * Set a flag to indicate that a signal from the periodic itimer has been 556 * caught. 557 */ 558 static sig_atomic_t signalled; 559 static void 560 catchalarm(int signo __unused) 561 { 562 signalled = true; 563 } 564 565 /* 566 * Print a running summary of interface statistics. 567 * Repeat display every interval seconds, showing statistics 568 * collected over that interval. Assumes that interval is non-zero. 569 * First line printed at top of screen is always cumulative. 570 */ 571 static void 572 sidewaysintpr(void) 573 { 574 struct iftot ift[2], *new, *old; 575 struct itimerval interval_it; 576 int oldmask, line; 577 578 new = &ift[0]; 579 old = &ift[1]; 580 fill_iftot(old); 581 582 (void)signal(SIGALRM, catchalarm); 583 signalled = false; 584 interval_it.it_interval.tv_sec = interval; 585 interval_it.it_interval.tv_usec = 0; 586 interval_it.it_value = interval_it.it_interval; 587 setitimer(ITIMER_REAL, &interval_it, NULL); 588 xo_open_list("interface-statistics"); 589 590 banner: 591 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 592 interface != NULL ? interface : "(Total)", "output"); 593 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 594 "{T:/%10s} {T:/%5s}", 595 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 596 "colls"); 597 if (dflag) 598 xo_emit(" {T:/%5.5s}", "drops"); 599 xo_emit("\n"); 600 xo_flush(); 601 line = 0; 602 603 loop: 604 if ((noutputs != 0) && (--noutputs == 0)) { 605 xo_close_list("interface-statistics"); 606 return; 607 } 608 oldmask = sigblock(sigmask(SIGALRM)); 609 while (!signalled) 610 sigpause(0); 611 signalled = false; 612 sigsetmask(oldmask); 613 line++; 614 615 fill_iftot(new); 616 617 xo_open_instance("stats"); 618 show_stat("lu", 10, "received-packets", 619 new->ift_ip - old->ift_ip, 1); 620 show_stat("lu", 5, "received-errors", 621 new->ift_ie - old->ift_ie, 1); 622 show_stat("lu", 5, "dropped-packets", 623 new->ift_id - old->ift_id, 1); 624 show_stat("lu", 10, "received-bytes", 625 new->ift_ib - old->ift_ib, 1); 626 show_stat("lu", 10, "sent-packets", 627 new->ift_op - old->ift_op, 1); 628 show_stat("lu", 5, "send-errors", 629 new->ift_oe - old->ift_oe, 1); 630 show_stat("lu", 10, "sent-bytes", 631 new->ift_ob - old->ift_ob, 1); 632 show_stat("NRSlu", 5, "collisions", 633 new->ift_co - old->ift_co, 1); 634 if (dflag) 635 show_stat("LSlu", 5, "dropped-packets", 636 new->ift_od - old->ift_od, 1); 637 xo_close_instance("stats"); 638 xo_emit("\n"); 639 xo_flush(); 640 641 if (new == &ift[0]) { 642 new = &ift[1]; 643 old = &ift[0]; 644 } else { 645 new = &ift[0]; 646 old = &ift[1]; 647 } 648 649 if (line == 21) 650 goto banner; 651 else 652 goto loop; 653 654 /* NOTREACHED */ 655 } 656