1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org> 5 * Copyright (c) 1983, 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#if 0 34#ifndef lint 35static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95"; 36#endif /* not lint */ 37#endif 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD$"); 41 42#include <sys/param.h> 43#include <sys/protosw.h> 44#include <sys/socket.h> 45#include <sys/socketvar.h> 46#include <sys/time.h> 47 48#include <net/if.h> 49#include <net/if_dl.h> 50#include <net/if_types.h> 51#include <net/ethernet.h> 52#include <netinet/in.h> 53#include <netinet/in_var.h> 54#include <arpa/inet.h> 55#ifdef PF 56#include <net/pfvar.h> 57#include <net/if_pfsync.h> 58#endif 59 60#include <err.h> 61#include <errno.h> 62#include <ifaddrs.h> 63#include <libutil.h> 64#ifdef INET6 65#include <netdb.h> 66#endif 67#include <signal.h> 68#include <stdbool.h> 69#include <stdint.h> 70#include <stdio.h> 71#include <stdlib.h> 72#include <string.h> 73#include <sysexits.h> 74#include <unistd.h> 75#include <libxo/xo.h> 76 77#include "netstat.h" 78 79static void sidewaysintpr(void); 80 81#ifdef PF 82static const char* pfsyncacts[] = { 83 /* PFSYNC_ACT_CLR */ "clear all request", 84 /* PFSYNC_ACT_INS */ "state insert", 85 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 86 /* PFSYNC_ACT_UPD */ "state update", 87 /* PFSYNC_ACT_UPD_C */ "compressed state update", 88 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 89 /* PFSYNC_ACT_DEL */ "state delete", 90 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 91 /* PFSYNC_ACT_INS_F */ "fragment insert", 92 /* PFSYNC_ACT_DEL_F */ "fragment delete", 93 /* PFSYNC_ACT_BUS */ "bulk update mark", 94 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 95 /* PFSYNC_ACT_EOF */ "end of frame mark", 96}; 97 98static const char* pfsyncacts_name[] = { 99 /* PFSYNC_ACT_CLR */ "clear-all-request", 100 /* PFSYNC_ACT_INS */ "state-insert", 101 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 102 /* PFSYNC_ACT_UPD */ "state-update", 103 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 104 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 105 /* PFSYNC_ACT_DEL */ "state-delete", 106 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 107 /* PFSYNC_ACT_INS_F */ "fragment-insert", 108 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 109 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 110 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 111 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 112}; 113 114static void 115pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 116{ 117 int i; 118 119 xo_open_list(list); 120 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 121 if (*a || sflag <= 1) { 122 xo_open_instance(list); 123 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 124 pfsyncacts_name[i], (uintmax_t)(*a), 125 pfsyncacts[i], plural(*a), desc); 126 xo_close_instance(list); 127 } 128 } 129 xo_close_list(list); 130} 131 132/* 133 * Dump pfsync statistics structure. 134 */ 135void 136pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 137{ 138 struct pfsyncstats pfsyncstat; 139 140 if (fetch_stats("net.pfsync.stats", off, &pfsyncstat, 141 sizeof(pfsyncstat), kread) != 0) 142 return; 143 144 xo_emit("{T:/%s}:\n", name); 145 xo_open_container(name); 146 147#define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 148 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 149 150 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 151 "{N:/packet%s received (IPv4)}\n"); 152 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 153 "{N:/packet%s received (IPv6)}\n"); 154 pfsync_acts_stats("input-histogram", "received", 155 &pfsyncstat.pfsyncs_iacts[0]); 156 p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} " 157 "{N:/packet%s discarded for bad interface}\n"); 158 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 159 "{N:/packet%s discarded for bad ttl}\n"); 160 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 161 "{N:/packet%s shorter than header}\n"); 162 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 163 "{N:/packet%s discarded for bad version}\n"); 164 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 165 "{N:/packet%s discarded for bad HMAC}\n"); 166 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 167 "{N:/packet%s discarded for bad action}\n"); 168 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 169 "{N:/packet%s discarded for short packet}\n"); 170 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 171 "{N:/state%s discarded for bad values}\n"); 172 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 173 "{N:/stale state%s}\n"); 174 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 175 "{N:/failed state lookup\\/insert%s}\n"); 176 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 177 "{N:/packet%s sent (IPv4})\n"); 178 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 179 "{N:/packet%s sent (IPv6})\n"); 180 pfsync_acts_stats("output-histogram", "sent", 181 &pfsyncstat.pfsyncs_oacts[0]); 182 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 183 "{N:/failure%s due to mbuf memory error}\n"); 184 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 185 "{N:/send error%s}\n"); 186#undef p 187 xo_close_container(name); 188} 189#endif /* PF */ 190 191/* 192 * Display a formatted value, or a '-' in the same space. 193 */ 194static void 195show_stat(const char *fmt, int width, const char *name, 196 u_long value, short showvalue, int div1000) 197{ 198 const char *lsep, *rsep; 199 char newfmt[64]; 200 201 lsep = ""; 202 if (strncmp(fmt, "LS", 2) == 0) { 203 lsep = " "; 204 fmt += 2; 205 } 206 rsep = " "; 207 if (strncmp(fmt, "NRS", 3) == 0) { 208 rsep = ""; 209 fmt += 3; 210 } 211 if (showvalue == 0) { 212 /* Print just dash. */ 213 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 214 return; 215 } 216 217 /* 218 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 219 * take args... so we need to conditionally include it in the format. 220 */ 221#define maybe_pad(pad) do { \ 222 if (strlen(pad)) { \ 223 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 224 xo_emit(newfmt); \ 225 } \ 226} while (0) 227 228 if (hflag) { 229 char buf[5]; 230 231 /* Format in human readable form. */ 232 humanize_number(buf, sizeof(buf), (int64_t)value, "", 233 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL | \ 234 ((div1000) ? HN_DIVISOR_1000 : 0)); 235 maybe_pad(lsep); 236 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 237 xo_emit(newfmt, buf); 238 maybe_pad(rsep); 239 } else { 240 /* Construct the format string. */ 241 maybe_pad(lsep); 242 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 243 name, width, fmt); 244 xo_emit(newfmt, value); 245 maybe_pad(rsep); 246 } 247} 248 249/* 250 * Find next multiaddr for a given interface name. 251 */ 252static struct ifmaddrs * 253next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 254{ 255 256 for(; ifma != NULL; ifma = ifma->ifma_next) { 257 struct sockaddr_dl *sdl; 258 259 sdl = (struct sockaddr_dl *)ifma->ifma_name; 260 if (ifma->ifma_addr->sa_family == family && 261 strcmp(sdl->sdl_data, name) == 0) 262 break; 263 } 264 265 return (ifma); 266} 267 268/* 269 * Print a description of the network interfaces. 270 */ 271void 272intpr(void (*pfunc)(char *), int af) 273{ 274 struct ifaddrs *ifap, *ifa; 275 struct ifmaddrs *ifmap, *ifma; 276 u_int ifn_len_max = 5, ifn_len; 277 u_int has_ipv6 = 0, net_len = 13, addr_len = 17; 278 279 if (interval) 280 return sidewaysintpr(); 281 282 if (getifaddrs(&ifap) != 0) 283 err(EX_OSERR, "getifaddrs"); 284 if (aflag && getifmaddrs(&ifmap) != 0) 285 err(EX_OSERR, "getifmaddrs"); 286 287 if (Wflag) { 288 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 289 if (interface != NULL && 290 strcmp(ifa->ifa_name, interface) != 0) 291 continue; 292 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 293 continue; 294 ifn_len = strlen(ifa->ifa_name); 295 if ((ifa->ifa_flags & IFF_UP) == 0) 296 ++ifn_len; 297 ifn_len_max = MAX(ifn_len_max, ifn_len); 298 if (ifa->ifa_addr->sa_family == AF_INET6) 299 has_ipv6 = 1; 300 } 301 if (has_ipv6) { 302 net_len = 24; 303 addr_len = 39; 304 } else 305 net_len = 18; 306 } 307 308 xo_open_list("interface"); 309 if (!pfunc) { 310 xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name"); 311 xo_emit(" {T:/%5.5s} {T:/%-*.*s} {T:/%-*.*s} {T:/%8.8s} " 312 "{T:/%5.5s} {T:/%5.5s}", 313 "Mtu", net_len, net_len, "Network", addr_len, addr_len, 314 "Address", "Ipkts", "Ierrs", "Idrop"); 315 if (bflag) 316 xo_emit(" {T:/%10.10s}","Ibytes"); 317 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 318 if (bflag) 319 xo_emit(" {T:/%10.10s}","Obytes"); 320 xo_emit(" {T:/%5s}", "Coll"); 321 if (dflag) 322 xo_emit(" {T:/%5.5s}", "Drop"); 323 xo_emit("\n"); 324 } 325 326 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 327 bool network = false, link = false; 328 char *name, *xname, buf[IFNAMSIZ+1]; 329 const char *nn, *rn; 330 331 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 332 continue; 333 334 name = ifa->ifa_name; 335 336 if (pfunc) { 337 338 (*pfunc)(name); 339 340 /* 341 * Skip all ifaddrs belonging to same interface. 342 */ 343 while(ifa->ifa_next != NULL && 344 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 345 ifa = ifa->ifa_next; 346 } 347 continue; 348 } 349 350 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 351 continue; 352 353 xo_open_instance("interface"); 354 355 if ((ifa->ifa_flags & IFF_UP) == 0) { 356 xname = stpcpy(buf, name); 357 *xname++ = '*'; 358 *xname = '\0'; 359 xname = buf; 360 } else 361 xname = name; 362 363 xo_emit("{d:/%-*.*s}{etk:name}{eq:flags/0x%x}", 364 ifn_len_max, ifn_len_max, xname, name, ifa->ifa_flags); 365 366#define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 367 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); 368#undef IFA_MTU 369 370 switch (ifa->ifa_addr->sa_family) { 371 case AF_UNSPEC: 372 xo_emit("{:network/%-*.*s} ", net_len, net_len, 373 "none"); 374 xo_emit("{:address/%-*.*s} ", addr_len, addr_len, 375 "none"); 376 break; 377 case AF_INET: 378#ifdef INET6 379 case AF_INET6: 380#endif /* INET6 */ 381 nn = netname(ifa->ifa_addr, ifa->ifa_netmask); 382 rn = routename(ifa->ifa_addr, numeric_addr); 383 if (Wflag) { 384 xo_emit("{t:network/%-*s} ", net_len, nn); 385 xo_emit("{t:address/%-*s} ", addr_len, rn); 386 } else { 387 xo_emit("{d:network/%-*.*s}{et:network} ", 388 net_len, net_len, nn, nn); 389 xo_emit("{d:address/%-*.*s}{et:address} ", 390 addr_len, addr_len, rn, rn); 391 } 392 393 network = true; 394 break; 395 case AF_LINK: 396 { 397 struct sockaddr_dl *sdl; 398 char linknum[sizeof("<Link#32767>")]; 399 400 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 401 snprintf(linknum, sizeof(linknum), "<Link#%d>", sdl->sdl_index); 402 xo_emit("{t:network/%-*.*s} ", net_len, net_len, 403 linknum); 404 if (sdl->sdl_nlen == 0 && 405 sdl->sdl_alen == 0 && 406 sdl->sdl_slen == 0) 407 xo_emit("{P:/%*s} ", addr_len, ""); 408 else 409 xo_emit("{t:address/%-*.*s} ", addr_len, 410 addr_len, routename(ifa->ifa_addr, 1)); 411 link = true; 412 break; 413 } 414 } 415 416#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 417 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 418 link|network, 1); 419 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), 420 link, 1); 421 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), 422 link, 1); 423 if (bflag) 424 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 425 link|network, 0); 426 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 427 link|network, 1); 428 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link, 1); 429 if (bflag) 430 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 431 link|network, 0); 432 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), 433 link, 1); 434 if (dflag) 435 show_stat("LSlu", 5, "dropped-packets", 436 IFA_STAT(oqdrops), link, 1); 437 xo_emit("\n"); 438 439 if (!aflag) { 440 xo_close_instance("interface"); 441 continue; 442 } 443 444 /* 445 * Print family's multicast addresses. 446 */ 447 xo_open_list("multicast-address"); 448 for (ifma = next_ifma(ifmap, ifa->ifa_name, 449 ifa->ifa_addr->sa_family); 450 ifma != NULL; 451 ifma = next_ifma(ifma, ifa->ifa_name, 452 ifa->ifa_addr->sa_family)) { 453 const char *fmt = NULL; 454 455 xo_open_instance("multicast-address"); 456 switch (ifma->ifma_addr->sa_family) { 457 case AF_LINK: 458 { 459 struct sockaddr_dl *sdl; 460 461 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 462 if (sdl->sdl_type != IFT_ETHER && 463 sdl->sdl_type != IFT_FDDI) 464 break; 465 } 466 /* FALLTHROUGH */ 467 case AF_INET: 468#ifdef INET6 469 case AF_INET6: 470#endif /* INET6 */ 471 fmt = routename(ifma->ifma_addr, numeric_addr); 472 break; 473 } 474 if (fmt) { 475 if (Wflag) 476 xo_emit("{P:/%27s }" 477 "{t:address/%-17s/}", "", fmt); 478 else 479 xo_emit("{P:/%25s }" 480 "{t:address/%-17.17s/}", "", fmt); 481 if (ifma->ifma_addr->sa_family == AF_LINK) { 482 xo_emit(" {:received-packets/%8lu}", 483 IFA_STAT(imcasts)); 484 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 485 xo_emit(" {:sent-packets/%8lu}", 486 IFA_STAT(omcasts)); 487 } 488 xo_emit("\n"); 489 } 490 xo_close_instance("multicast-address"); 491 ifma = ifma->ifma_next; 492 } 493 xo_close_list("multicast-address"); 494 xo_close_instance("interface"); 495 } 496 xo_close_list("interface"); 497 498 freeifaddrs(ifap); 499 if (aflag) 500 freeifmaddrs(ifmap); 501} 502 503struct iftot { 504 u_long ift_ip; /* input packets */ 505 u_long ift_ie; /* input errors */ 506 u_long ift_id; /* input drops */ 507 u_long ift_op; /* output packets */ 508 u_long ift_oe; /* output errors */ 509 u_long ift_od; /* output drops */ 510 u_long ift_co; /* collisions */ 511 u_long ift_ib; /* input bytes */ 512 u_long ift_ob; /* output bytes */ 513}; 514 515/* 516 * Obtain stats for interface(s). 517 */ 518static void 519fill_iftot(struct iftot *st) 520{ 521 struct ifaddrs *ifap, *ifa; 522 bool found = false; 523 524 if (getifaddrs(&ifap) != 0) 525 xo_err(EX_OSERR, "getifaddrs"); 526 527 bzero(st, sizeof(*st)); 528 529 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 530 if (ifa->ifa_addr->sa_family != AF_LINK) 531 continue; 532 if (interface) { 533 if (strcmp(ifa->ifa_name, interface) == 0) 534 found = true; 535 else 536 continue; 537 } 538 539 st->ift_ip += IFA_STAT(ipackets); 540 st->ift_ie += IFA_STAT(ierrors); 541 st->ift_id += IFA_STAT(iqdrops); 542 st->ift_ib += IFA_STAT(ibytes); 543 st->ift_op += IFA_STAT(opackets); 544 st->ift_oe += IFA_STAT(oerrors); 545 st->ift_od += IFA_STAT(oqdrops); 546 st->ift_ob += IFA_STAT(obytes); 547 st->ift_co += IFA_STAT(collisions); 548 } 549 550 if (interface && found == false) 551 xo_err(EX_DATAERR, "interface %s not found", interface); 552 553 freeifaddrs(ifap); 554} 555 556/* 557 * Set a flag to indicate that a signal from the periodic itimer has been 558 * caught. 559 */ 560static sig_atomic_t signalled; 561static void 562catchalarm(int signo __unused) 563{ 564 signalled = true; 565} 566 567/* 568 * Print a running summary of interface statistics. 569 * Repeat display every interval seconds, showing statistics 570 * collected over that interval. Assumes that interval is non-zero. 571 * First line printed at top of screen is always cumulative. 572 */ 573static void 574sidewaysintpr(void) 575{ 576 struct iftot ift[2], *new, *old; 577 struct itimerval interval_it; 578 int oldmask, line; 579 580 new = &ift[0]; 581 old = &ift[1]; 582 fill_iftot(old); 583 584 (void)signal(SIGALRM, catchalarm); 585 signalled = false; 586 interval_it.it_interval.tv_sec = interval; 587 interval_it.it_interval.tv_usec = 0; 588 interval_it.it_value = interval_it.it_interval; 589 setitimer(ITIMER_REAL, &interval_it, NULL); 590 xo_open_list("interface-statistics"); 591 592banner: 593 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 594 interface != NULL ? interface : "(Total)", "output"); 595 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 596 "{T:/%10s} {T:/%5s}", 597 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 598 "colls"); 599 if (dflag) 600 xo_emit(" {T:/%5.5s}", "drops"); 601 xo_emit("\n"); 602 xo_flush(); 603 line = 0; 604 605loop: 606 if ((noutputs != 0) && (--noutputs == 0)) { 607 xo_close_list("interface-statistics"); 608 return; 609 } 610 oldmask = sigblock(sigmask(SIGALRM)); 611 while (!signalled) 612 sigpause(0); 613 signalled = false; 614 sigsetmask(oldmask); 615 line++; 616 617 fill_iftot(new); 618 619 xo_open_instance("stats"); 620 show_stat("lu", 10, "received-packets", 621 new->ift_ip - old->ift_ip, 1, 1); 622 show_stat("lu", 5, "received-errors", 623 new->ift_ie - old->ift_ie, 1, 1); 624 show_stat("lu", 5, "dropped-packets", 625 new->ift_id - old->ift_id, 1, 1); 626 show_stat("lu", 10, "received-bytes", 627 new->ift_ib - old->ift_ib, 1, 0); 628 show_stat("lu", 10, "sent-packets", 629 new->ift_op - old->ift_op, 1, 1); 630 show_stat("lu", 5, "send-errors", 631 new->ift_oe - old->ift_oe, 1, 1); 632 show_stat("lu", 10, "sent-bytes", 633 new->ift_ob - old->ift_ob, 1, 0); 634 show_stat("NRSlu", 5, "collisions", 635 new->ift_co - old->ift_co, 1, 1); 636 if (dflag) 637 show_stat("LSlu", 5, "dropped-packets", 638 new->ift_od - old->ift_od, 1, 1); 639 xo_close_instance("stats"); 640 xo_emit("\n"); 641 xo_flush(); 642 643 if (new == &ift[0]) { 644 new = &ift[1]; 645 old = &ift[0]; 646 } else { 647 new = &ift[0]; 648 old = &ift[1]; 649 } 650 651 if (line == 21) 652 goto banner; 653 else 654 goto loop; 655 656 /* NOTREACHED */ 657} 658