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; 274 275 if (interval) 276 return sidewaysintpr(); 277 278 if (getifaddrs(&ifap) != 0) 279 err(EX_OSERR, "getifaddrs"); 280 if (aflag && getifmaddrs(&ifmap) != 0) 281 err(EX_OSERR, "getifmaddrs"); 282 283 xo_open_list("interface"); 284 if (!pfunc) { 285 if (Wflag) 286 xo_emit("{T:/%-7.7s}", "Name"); 287 else 288 xo_emit("{T:/%-5.5s}", "Name"); 289 xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} " 290 "{T:/%5.5s} {T:/%5.5s}", 291 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 292 if (bflag) 293 xo_emit(" {T:/%10.10s}","Ibytes"); 294 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 295 if (bflag) 296 xo_emit(" {T:/%10.10s}","Obytes"); 297 xo_emit(" {T:/%5s}", "Coll"); 298 if (dflag) 299 xo_emit(" {T:/%s}", "Drop"); 300 xo_emit("\n"); 301 } 302 303 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 304 bool network = false, link = false; 305 char *name, *xname, buf[IFNAMSIZ+1]; 306 307 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 308 continue; 309 310 name = ifa->ifa_name; 311 312 if (pfunc) { 313 314 (*pfunc)(name); 315 316 /* 317 * Skip all ifaddrs belonging to same interface. 318 */ 319 while(ifa->ifa_next != NULL && 320 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 321 ifa = ifa->ifa_next; 322 } 323 continue; 324 } 325 326 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 327 continue; 328 329 xo_open_instance("interface"); 330 331 if ((ifa->ifa_flags & IFF_UP) == 0) { 332 xname = stpcpy(buf, name); 333 *xname++ = '*'; 334 *xname = '\0'; 335 xname = buf; 336 } else 337 xname = name; 338 339 if (Wflag) 340 xo_emit("{etk:name/%s}{e:flags/0x%x}{d:/%7.7s}", 341 name, ifa->ifa_flags, xname); 342 else 343 xo_emit("{etk:name/%s}{e:flags/0x%x}{d:/%5.5s}", 344 name, ifa->ifa_flags, xname); 345 346 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 347 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); 348 #undef IFA_MTU 349 350 switch (ifa->ifa_addr->sa_family) { 351 case AF_UNSPEC: 352 xo_emit("{:network/%-13.13s} ", "none"); 353 xo_emit("{:address/%-15.15s} ", "none"); 354 break; 355 case AF_INET: 356 if (Wflag) { 357 xo_emit("{t:network/%-13s} ", 358 netname(ifa->ifa_addr, ifa->ifa_netmask)); 359 xo_emit("{t:address/%-17s} ", 360 routename(ifa->ifa_addr, numeric_addr)); 361 } else { 362 xo_emit("{t:network/%-13.13s} ", 363 netname(ifa->ifa_addr, ifa->ifa_netmask)); 364 xo_emit("{t:address/%-17.17s} ", 365 routename(ifa->ifa_addr, numeric_addr)); 366 } 367 368 network = true; 369 break; 370 #ifdef INET6 371 case AF_INET6: 372 if (Wflag) { 373 xo_emit("{t:network/%-13s} ", 374 netname(ifa->ifa_addr, ifa->ifa_netmask)); 375 xo_emit("{t:address/%-17s} ", 376 routename(ifa->ifa_addr, numeric_addr)); 377 } else { 378 xo_emit("{t:network/%-13.13s} ", 379 netname(ifa->ifa_addr, ifa->ifa_netmask)); 380 xo_emit("{t:address/%-17.17s} ", 381 routename(ifa->ifa_addr, numeric_addr)); 382 } 383 384 network = true; 385 break; 386 #endif /* INET6 */ 387 case AF_LINK: 388 { 389 struct sockaddr_dl *sdl; 390 char linknum[10]; 391 392 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 393 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 394 xo_emit("{t:network/%-13.13s} ", linknum); 395 if (sdl->sdl_nlen == 0 && 396 sdl->sdl_alen == 0 && 397 sdl->sdl_slen == 0) 398 xo_emit("{P: }"); 399 else 400 xo_emit("{:address/%*s}", 401 32 - 3 * sdl->sdl_alen, 402 routename(ifa->ifa_addr, 1)); 403 link = true; 404 break; 405 } 406 } 407 408 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 409 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 410 link|network, 1); 411 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), 412 link, 1); 413 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), 414 link, 1); 415 if (bflag) 416 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 417 link|network, 0); 418 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 419 link|network, 1); 420 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link, 1); 421 if (bflag) 422 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 423 link|network, 0); 424 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), 425 link, 1); 426 if (dflag) 427 show_stat("LSlu", 5, "dropped-packets", 428 IFA_STAT(oqdrops), link, 1); 429 xo_emit("\n"); 430 431 if (!aflag) { 432 xo_close_instance("interface"); 433 continue; 434 } 435 436 /* 437 * Print family's multicast addresses. 438 */ 439 xo_open_list("multicast-address"); 440 for (ifma = next_ifma(ifmap, ifa->ifa_name, 441 ifa->ifa_addr->sa_family); 442 ifma != NULL; 443 ifma = next_ifma(ifma, ifa->ifa_name, 444 ifa->ifa_addr->sa_family)) { 445 const char *fmt = NULL; 446 447 xo_open_instance("multicast-address"); 448 switch (ifma->ifma_addr->sa_family) { 449 case AF_LINK: 450 { 451 struct sockaddr_dl *sdl; 452 453 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 454 if (sdl->sdl_type != IFT_ETHER && 455 sdl->sdl_type != IFT_FDDI) 456 break; 457 } 458 /* FALLTHROUGH */ 459 case AF_INET: 460 #ifdef INET6 461 case AF_INET6: 462 #endif /* INET6 */ 463 fmt = routename(ifma->ifma_addr, numeric_addr); 464 break; 465 } 466 if (fmt) { 467 if (Wflag) 468 xo_emit("{P:/%27s }" 469 "{t:address/%-17s/}", "", fmt); 470 else 471 xo_emit("{P:/%25s }" 472 "{t:address/%-17.17s/}", "", fmt); 473 if (ifma->ifma_addr->sa_family == AF_LINK) { 474 xo_emit(" {:received-packets/%8lu}", 475 IFA_STAT(imcasts)); 476 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 477 xo_emit(" {:sent-packets/%8lu}", 478 IFA_STAT(omcasts)); 479 } 480 xo_emit("\n"); 481 } 482 xo_close_instance("multicast-address"); 483 ifma = ifma->ifma_next; 484 } 485 xo_close_list("multicast-address"); 486 xo_close_instance("interface"); 487 } 488 xo_close_list("interface"); 489 490 freeifaddrs(ifap); 491 if (aflag) 492 freeifmaddrs(ifmap); 493 } 494 495 struct iftot { 496 u_long ift_ip; /* input packets */ 497 u_long ift_ie; /* input errors */ 498 u_long ift_id; /* input drops */ 499 u_long ift_op; /* output packets */ 500 u_long ift_oe; /* output errors */ 501 u_long ift_od; /* output drops */ 502 u_long ift_co; /* collisions */ 503 u_long ift_ib; /* input bytes */ 504 u_long ift_ob; /* output bytes */ 505 }; 506 507 /* 508 * Obtain stats for interface(s). 509 */ 510 static void 511 fill_iftot(struct iftot *st) 512 { 513 struct ifaddrs *ifap, *ifa; 514 bool found = false; 515 516 if (getifaddrs(&ifap) != 0) 517 xo_err(EX_OSERR, "getifaddrs"); 518 519 bzero(st, sizeof(*st)); 520 521 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 522 if (ifa->ifa_addr->sa_family != AF_LINK) 523 continue; 524 if (interface) { 525 if (strcmp(ifa->ifa_name, interface) == 0) 526 found = true; 527 else 528 continue; 529 } 530 531 st->ift_ip += IFA_STAT(ipackets); 532 st->ift_ie += IFA_STAT(ierrors); 533 st->ift_id += IFA_STAT(iqdrops); 534 st->ift_ib += IFA_STAT(ibytes); 535 st->ift_op += IFA_STAT(opackets); 536 st->ift_oe += IFA_STAT(oerrors); 537 st->ift_od += IFA_STAT(oqdrops); 538 st->ift_ob += IFA_STAT(obytes); 539 st->ift_co += IFA_STAT(collisions); 540 } 541 542 if (interface && found == false) 543 xo_err(EX_DATAERR, "interface %s not found", interface); 544 545 freeifaddrs(ifap); 546 } 547 548 /* 549 * Set a flag to indicate that a signal from the periodic itimer has been 550 * caught. 551 */ 552 static sig_atomic_t signalled; 553 static void 554 catchalarm(int signo __unused) 555 { 556 signalled = true; 557 } 558 559 /* 560 * Print a running summary of interface statistics. 561 * Repeat display every interval seconds, showing statistics 562 * collected over that interval. Assumes that interval is non-zero. 563 * First line printed at top of screen is always cumulative. 564 */ 565 static void 566 sidewaysintpr(void) 567 { 568 struct iftot ift[2], *new, *old; 569 struct itimerval interval_it; 570 int oldmask, line; 571 572 new = &ift[0]; 573 old = &ift[1]; 574 fill_iftot(old); 575 576 (void)signal(SIGALRM, catchalarm); 577 signalled = false; 578 interval_it.it_interval.tv_sec = interval; 579 interval_it.it_interval.tv_usec = 0; 580 interval_it.it_value = interval_it.it_interval; 581 setitimer(ITIMER_REAL, &interval_it, NULL); 582 xo_open_list("interface-statistics"); 583 584 banner: 585 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 586 interface != NULL ? interface : "(Total)", "output"); 587 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 588 "{T:/%10s} {T:/%5s}", 589 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 590 "colls"); 591 if (dflag) 592 xo_emit(" {T:/%5.5s}", "drops"); 593 xo_emit("\n"); 594 xo_flush(); 595 line = 0; 596 597 loop: 598 if ((noutputs != 0) && (--noutputs == 0)) { 599 xo_close_list("interface-statistics"); 600 return; 601 } 602 oldmask = sigblock(sigmask(SIGALRM)); 603 while (!signalled) 604 sigpause(0); 605 signalled = false; 606 sigsetmask(oldmask); 607 line++; 608 609 fill_iftot(new); 610 611 xo_open_instance("stats"); 612 show_stat("lu", 10, "received-packets", 613 new->ift_ip - old->ift_ip, 1, 1); 614 show_stat("lu", 5, "received-errors", 615 new->ift_ie - old->ift_ie, 1, 1); 616 show_stat("lu", 5, "dropped-packets", 617 new->ift_id - old->ift_id, 1, 1); 618 show_stat("lu", 10, "received-bytes", 619 new->ift_ib - old->ift_ib, 1, 0); 620 show_stat("lu", 10, "sent-packets", 621 new->ift_op - old->ift_op, 1, 1); 622 show_stat("lu", 5, "send-errors", 623 new->ift_oe - old->ift_oe, 1, 1); 624 show_stat("lu", 10, "sent-bytes", 625 new->ift_ob - old->ift_ob, 1, 0); 626 show_stat("NRSlu", 5, "collisions", 627 new->ift_co - old->ift_co, 1, 1); 628 if (dflag) 629 show_stat("LSlu", 5, "dropped-packets", 630 new->ift_od - old->ift_od, 1, 1); 631 xo_close_instance("stats"); 632 xo_emit("\n"); 633 xo_flush(); 634 635 if (new == &ift[0]) { 636 new = &ift[1]; 637 old = &ift[0]; 638 } else { 639 new = &ift[0]; 640 old = &ift[1]; 641 } 642 643 if (line == 21) 644 goto banner; 645 else 646 goto loop; 647 648 /* NOTREACHED */ 649 } 650