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/time.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_types.h> 49 #include <net/ethernet.h> 50 #include <netinet/in.h> 51 #include <netinet/in_var.h> 52 #include <arpa/inet.h> 53 #ifdef PF 54 #include <net/pfvar.h> 55 #include <net/if_pfsync.h> 56 #endif 57 58 #include <err.h> 59 #include <errno.h> 60 #include <ifaddrs.h> 61 #include <libutil.h> 62 #ifdef INET6 63 #include <netdb.h> 64 #endif 65 #include <signal.h> 66 #include <stdbool.h> 67 #include <stdint.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <sysexits.h> 72 #include <unistd.h> 73 #include <libxo/xo.h> 74 75 #include "netstat.h" 76 77 static void sidewaysintpr(void); 78 79 #ifdef PF 80 static const char* pfsyncacts[] = { 81 /* PFSYNC_ACT_CLR */ "clear all request", 82 /* PFSYNC_ACT_INS */ "state insert", 83 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 84 /* PFSYNC_ACT_UPD */ "state update", 85 /* PFSYNC_ACT_UPD_C */ "compressed state update", 86 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 87 /* PFSYNC_ACT_DEL */ "state delete", 88 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 89 /* PFSYNC_ACT_INS_F */ "fragment insert", 90 /* PFSYNC_ACT_DEL_F */ "fragment delete", 91 /* PFSYNC_ACT_BUS */ "bulk update mark", 92 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 93 /* PFSYNC_ACT_EOF */ "end of frame mark", 94 }; 95 96 static const char* pfsyncacts_name[] = { 97 /* PFSYNC_ACT_CLR */ "clear-all-request", 98 /* PFSYNC_ACT_INS */ "state-insert", 99 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 100 /* PFSYNC_ACT_UPD */ "state-update", 101 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 102 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 103 /* PFSYNC_ACT_DEL */ "state-delete", 104 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 105 /* PFSYNC_ACT_INS_F */ "fragment-insert", 106 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 107 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 108 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 109 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 110 }; 111 112 static void 113 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 114 { 115 int i; 116 117 xo_open_list(list); 118 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 119 if (*a || sflag <= 1) { 120 xo_open_instance(list); 121 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 122 pfsyncacts_name[i], (uintmax_t)(*a), 123 pfsyncacts[i], plural(*a), desc); 124 xo_close_instance(list); 125 } 126 } 127 xo_close_list(list); 128 } 129 130 /* 131 * Dump pfsync statistics structure. 132 */ 133 void 134 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 135 { 136 struct pfsyncstats pfsyncstat; 137 138 if (fetch_stats("net.pfsync.stats", off, &pfsyncstat, 139 sizeof(pfsyncstat), kread) != 0) 140 return; 141 142 xo_emit("{T:/%s}:\n", name); 143 xo_open_container(name); 144 145 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 146 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 147 148 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 149 "{N:/packet%s received (IPv4)}\n"); 150 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 151 "{N:/packet%s received (IPv6)}\n"); 152 pfsync_acts_stats("input-histogram", "received", 153 &pfsyncstat.pfsyncs_iacts[0]); 154 p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} " 155 "{N:/packet%s discarded for bad interface}\n"); 156 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 157 "{N:/packet%s discarded for bad ttl}\n"); 158 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 159 "{N:/packet%s shorter than header}\n"); 160 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 161 "{N:/packet%s discarded for bad version}\n"); 162 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 163 "{N:/packet%s discarded for bad HMAC}\n"); 164 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 165 "{N:/packet%s discarded for bad action}\n"); 166 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 167 "{N:/packet%s discarded for short packet}\n"); 168 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 169 "{N:/state%s discarded for bad values}\n"); 170 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 171 "{N:/stale state%s}\n"); 172 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 173 "{N:/failed state lookup\\/insert%s}\n"); 174 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 175 "{N:/packet%s sent (IPv4})\n"); 176 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 177 "{N:/packet%s sent (IPv6})\n"); 178 pfsync_acts_stats("output-histogram", "sent", 179 &pfsyncstat.pfsyncs_oacts[0]); 180 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 181 "{N:/failure%s due to mbuf memory error}\n"); 182 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 183 "{N:/send error%s}\n"); 184 #undef p 185 xo_close_container(name); 186 } 187 #endif /* PF */ 188 189 /* 190 * Display a formatted value, or a '-' in the same space. 191 */ 192 static void 193 show_stat(const char *fmt, int width, const char *name, 194 u_long value, short showvalue, int div1000) 195 { 196 const char *lsep, *rsep; 197 char newfmt[64]; 198 199 lsep = ""; 200 if (strncmp(fmt, "LS", 2) == 0) { 201 lsep = " "; 202 fmt += 2; 203 } 204 rsep = " "; 205 if (strncmp(fmt, "NRS", 3) == 0) { 206 rsep = ""; 207 fmt += 3; 208 } 209 if (showvalue == 0) { 210 /* Print just dash. */ 211 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 212 return; 213 } 214 215 /* 216 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 217 * take args... so we need to conditionally include it in the format. 218 */ 219 #define maybe_pad(pad) do { \ 220 if (strlen(pad)) { \ 221 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 222 xo_emit(newfmt); \ 223 } \ 224 } while (0) 225 226 if (hflag) { 227 char buf[5]; 228 229 /* Format in human readable form. */ 230 humanize_number(buf, sizeof(buf), (int64_t)value, "", 231 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL | \ 232 ((div1000) ? HN_DIVISOR_1000 : 0)); 233 maybe_pad(lsep); 234 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 235 xo_emit(newfmt, buf); 236 maybe_pad(rsep); 237 } else { 238 /* Construct the format string. */ 239 maybe_pad(lsep); 240 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 241 name, width, fmt); 242 xo_emit(newfmt, value); 243 maybe_pad(rsep); 244 } 245 } 246 247 /* 248 * Find next multiaddr for a given interface name. 249 */ 250 static struct ifmaddrs * 251 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 252 { 253 254 for(; ifma != NULL; ifma = ifma->ifma_next) { 255 struct sockaddr_dl *sdl; 256 257 sdl = (struct sockaddr_dl *)ifma->ifma_name; 258 if (ifma->ifma_addr->sa_family == family && 259 strcmp(sdl->sdl_data, name) == 0) 260 break; 261 } 262 263 return (ifma); 264 } 265 266 /* 267 * Print a description of the network interfaces. 268 */ 269 void 270 intpr(void (*pfunc)(char *), int af) 271 { 272 struct ifaddrs *ifap, *ifa; 273 struct ifmaddrs *ifmap, *ifma; 274 u_int ifn_len_max = 5, ifn_len; 275 276 if (interval) 277 return sidewaysintpr(); 278 279 if (getifaddrs(&ifap) != 0) 280 err(EX_OSERR, "getifaddrs"); 281 if (aflag && getifmaddrs(&ifmap) != 0) 282 err(EX_OSERR, "getifmaddrs"); 283 284 if (Wflag) { 285 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 286 if (interface != NULL && 287 strcmp(ifa->ifa_name, interface) != 0) 288 continue; 289 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 290 continue; 291 ifn_len = strlen(ifa->ifa_name); 292 if ((ifa->ifa_flags & IFF_UP) == 0) 293 ++ifn_len; 294 ifn_len_max = MAX(ifn_len_max, ifn_len); 295 } 296 } 297 298 xo_open_list("interface"); 299 if (!pfunc) { 300 xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name"); 301 xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} " 302 "{T:/%5.5s} {T:/%5.5s}", 303 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 304 if (bflag) 305 xo_emit(" {T:/%10.10s}","Ibytes"); 306 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 307 if (bflag) 308 xo_emit(" {T:/%10.10s}","Obytes"); 309 xo_emit(" {T:/%5s}", "Coll"); 310 if (dflag) 311 xo_emit(" {T:/%s}", "Drop"); 312 xo_emit("\n"); 313 } 314 315 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 316 bool network = false, link = false; 317 char *name, *xname, buf[IFNAMSIZ+1]; 318 319 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 320 continue; 321 322 name = ifa->ifa_name; 323 324 if (pfunc) { 325 326 (*pfunc)(name); 327 328 /* 329 * Skip all ifaddrs belonging to same interface. 330 */ 331 while(ifa->ifa_next != NULL && 332 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 333 ifa = ifa->ifa_next; 334 } 335 continue; 336 } 337 338 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 339 continue; 340 341 xo_open_instance("interface"); 342 343 if ((ifa->ifa_flags & IFF_UP) == 0) { 344 xname = stpcpy(buf, name); 345 *xname++ = '*'; 346 *xname = '\0'; 347 xname = buf; 348 } else 349 xname = name; 350 351 xo_emit("{etk:name/%s}{e:flags/0x%x}{d:/%-*.*s}", 352 name, ifa->ifa_flags, ifn_len_max, ifn_len_max, xname); 353 354 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 355 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); 356 #undef IFA_MTU 357 358 switch (ifa->ifa_addr->sa_family) { 359 case AF_UNSPEC: 360 xo_emit("{:network/%-13.13s} ", "none"); 361 xo_emit("{:address/%-15.15s} ", "none"); 362 break; 363 case AF_INET: 364 #ifdef INET6 365 case AF_INET6: 366 #endif /* INET6 */ 367 if (Wflag) { 368 xo_emit("{t:network/%-13s} ", 369 netname(ifa->ifa_addr, ifa->ifa_netmask)); 370 xo_emit("{t:address/%-17s} ", 371 routename(ifa->ifa_addr, numeric_addr)); 372 } else { 373 xo_emit("{t:network/%-13.13s} ", 374 netname(ifa->ifa_addr, ifa->ifa_netmask)); 375 xo_emit("{t:address/%-17.17s} ", 376 routename(ifa->ifa_addr, numeric_addr)); 377 } 378 379 network = true; 380 break; 381 case AF_LINK: 382 { 383 struct sockaddr_dl *sdl; 384 char linknum[10]; 385 386 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 387 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 388 xo_emit("{t:network/%-13.13s} ", linknum); 389 if (sdl->sdl_nlen == 0 && 390 sdl->sdl_alen == 0 && 391 sdl->sdl_slen == 0) 392 xo_emit("{P: }"); 393 else 394 xo_emit("{:address/%-17.17s} ", 395 routename(ifa->ifa_addr, 1)); 396 link = true; 397 break; 398 } 399 } 400 401 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 402 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 403 link|network, 1); 404 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), 405 link, 1); 406 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), 407 link, 1); 408 if (bflag) 409 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 410 link|network, 0); 411 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 412 link|network, 1); 413 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link, 1); 414 if (bflag) 415 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 416 link|network, 0); 417 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), 418 link, 1); 419 if (dflag) 420 show_stat("LSlu", 5, "dropped-packets", 421 IFA_STAT(oqdrops), link, 1); 422 xo_emit("\n"); 423 424 if (!aflag) { 425 xo_close_instance("interface"); 426 continue; 427 } 428 429 /* 430 * Print family's multicast addresses. 431 */ 432 xo_open_list("multicast-address"); 433 for (ifma = next_ifma(ifmap, ifa->ifa_name, 434 ifa->ifa_addr->sa_family); 435 ifma != NULL; 436 ifma = next_ifma(ifma, ifa->ifa_name, 437 ifa->ifa_addr->sa_family)) { 438 const char *fmt = NULL; 439 440 xo_open_instance("multicast-address"); 441 switch (ifma->ifma_addr->sa_family) { 442 case AF_LINK: 443 { 444 struct sockaddr_dl *sdl; 445 446 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 447 if (sdl->sdl_type != IFT_ETHER && 448 sdl->sdl_type != IFT_FDDI) 449 break; 450 } 451 /* FALLTHROUGH */ 452 case AF_INET: 453 #ifdef INET6 454 case AF_INET6: 455 #endif /* INET6 */ 456 fmt = routename(ifma->ifma_addr, numeric_addr); 457 break; 458 } 459 if (fmt) { 460 if (Wflag) 461 xo_emit("{P:/%27s }" 462 "{t:address/%-17s/}", "", fmt); 463 else 464 xo_emit("{P:/%25s }" 465 "{t:address/%-17.17s/}", "", fmt); 466 if (ifma->ifma_addr->sa_family == AF_LINK) { 467 xo_emit(" {:received-packets/%8lu}", 468 IFA_STAT(imcasts)); 469 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 470 xo_emit(" {:sent-packets/%8lu}", 471 IFA_STAT(omcasts)); 472 } 473 xo_emit("\n"); 474 } 475 xo_close_instance("multicast-address"); 476 ifma = ifma->ifma_next; 477 } 478 xo_close_list("multicast-address"); 479 xo_close_instance("interface"); 480 } 481 xo_close_list("interface"); 482 483 freeifaddrs(ifap); 484 if (aflag) 485 freeifmaddrs(ifmap); 486 } 487 488 struct iftot { 489 u_long ift_ip; /* input packets */ 490 u_long ift_ie; /* input errors */ 491 u_long ift_id; /* input drops */ 492 u_long ift_op; /* output packets */ 493 u_long ift_oe; /* output errors */ 494 u_long ift_od; /* output drops */ 495 u_long ift_co; /* collisions */ 496 u_long ift_ib; /* input bytes */ 497 u_long ift_ob; /* output bytes */ 498 }; 499 500 /* 501 * Obtain stats for interface(s). 502 */ 503 static void 504 fill_iftot(struct iftot *st) 505 { 506 struct ifaddrs *ifap, *ifa; 507 bool found = false; 508 509 if (getifaddrs(&ifap) != 0) 510 xo_err(EX_OSERR, "getifaddrs"); 511 512 bzero(st, sizeof(*st)); 513 514 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 515 if (ifa->ifa_addr->sa_family != AF_LINK) 516 continue; 517 if (interface) { 518 if (strcmp(ifa->ifa_name, interface) == 0) 519 found = true; 520 else 521 continue; 522 } 523 524 st->ift_ip += IFA_STAT(ipackets); 525 st->ift_ie += IFA_STAT(ierrors); 526 st->ift_id += IFA_STAT(iqdrops); 527 st->ift_ib += IFA_STAT(ibytes); 528 st->ift_op += IFA_STAT(opackets); 529 st->ift_oe += IFA_STAT(oerrors); 530 st->ift_od += IFA_STAT(oqdrops); 531 st->ift_ob += IFA_STAT(obytes); 532 st->ift_co += IFA_STAT(collisions); 533 } 534 535 if (interface && found == false) 536 xo_err(EX_DATAERR, "interface %s not found", interface); 537 538 freeifaddrs(ifap); 539 } 540 541 /* 542 * Set a flag to indicate that a signal from the periodic itimer has been 543 * caught. 544 */ 545 static sig_atomic_t signalled; 546 static void 547 catchalarm(int signo __unused) 548 { 549 signalled = true; 550 } 551 552 /* 553 * Print a running summary of interface statistics. 554 * Repeat display every interval seconds, showing statistics 555 * collected over that interval. Assumes that interval is non-zero. 556 * First line printed at top of screen is always cumulative. 557 */ 558 static void 559 sidewaysintpr(void) 560 { 561 struct iftot ift[2], *new, *old; 562 struct itimerval interval_it; 563 int oldmask, line; 564 565 new = &ift[0]; 566 old = &ift[1]; 567 fill_iftot(old); 568 569 (void)signal(SIGALRM, catchalarm); 570 signalled = false; 571 interval_it.it_interval.tv_sec = interval; 572 interval_it.it_interval.tv_usec = 0; 573 interval_it.it_value = interval_it.it_interval; 574 setitimer(ITIMER_REAL, &interval_it, NULL); 575 xo_open_list("interface-statistics"); 576 577 banner: 578 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 579 interface != NULL ? interface : "(Total)", "output"); 580 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 581 "{T:/%10s} {T:/%5s}", 582 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 583 "colls"); 584 if (dflag) 585 xo_emit(" {T:/%5.5s}", "drops"); 586 xo_emit("\n"); 587 xo_flush(); 588 line = 0; 589 590 loop: 591 if ((noutputs != 0) && (--noutputs == 0)) { 592 xo_close_list("interface-statistics"); 593 return; 594 } 595 oldmask = sigblock(sigmask(SIGALRM)); 596 while (!signalled) 597 sigpause(0); 598 signalled = false; 599 sigsetmask(oldmask); 600 line++; 601 602 fill_iftot(new); 603 604 xo_open_instance("stats"); 605 show_stat("lu", 10, "received-packets", 606 new->ift_ip - old->ift_ip, 1, 1); 607 show_stat("lu", 5, "received-errors", 608 new->ift_ie - old->ift_ie, 1, 1); 609 show_stat("lu", 5, "dropped-packets", 610 new->ift_id - old->ift_id, 1, 1); 611 show_stat("lu", 10, "received-bytes", 612 new->ift_ib - old->ift_ib, 1, 0); 613 show_stat("lu", 10, "sent-packets", 614 new->ift_op - old->ift_op, 1, 1); 615 show_stat("lu", 5, "send-errors", 616 new->ift_oe - old->ift_oe, 1, 1); 617 show_stat("lu", 10, "sent-bytes", 618 new->ift_ob - old->ift_ob, 1, 0); 619 show_stat("NRSlu", 5, "collisions", 620 new->ift_co - old->ift_co, 1, 1); 621 if (dflag) 622 show_stat("LSlu", 5, "dropped-packets", 623 new->ift_od - old->ift_od, 1, 1); 624 xo_close_instance("stats"); 625 xo_emit("\n"); 626 xo_flush(); 627 628 if (new == &ift[0]) { 629 new = &ift[1]; 630 old = &ift[0]; 631 } else { 632 new = &ift[0]; 633 old = &ift[1]; 634 } 635 636 if (line == 21) 637 goto banner; 638 else 639 goto loop; 640 641 /* NOTREACHED */ 642 } 643