if.c revision 311670
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 33static 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: stable/11/usr.bin/netstat/if.c 311670 2017-01-08 07:25:22Z delphij $"); 39 40#include <sys/param.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 77static void sidewaysintpr(void); 78 79#ifdef PF 80static 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 96static 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 112static void 113pfsync_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 */ 133void 134pfsync_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 */ 192static void 193show_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 */ 250static struct ifmaddrs * 251next_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 */ 269void 270intpr(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 u_int has_ipv6 = 0, net_len = 13, addr_len = 17; 276 277 if (interval) 278 return sidewaysintpr(); 279 280 if (getifaddrs(&ifap) != 0) 281 err(EX_OSERR, "getifaddrs"); 282 if (aflag && getifmaddrs(&ifmap) != 0) 283 err(EX_OSERR, "getifmaddrs"); 284 285 if (Wflag) { 286 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 287 if (interface != NULL && 288 strcmp(ifa->ifa_name, interface) != 0) 289 continue; 290 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 291 continue; 292 ifn_len = strlen(ifa->ifa_name); 293 if ((ifa->ifa_flags & IFF_UP) == 0) 294 ++ifn_len; 295 ifn_len_max = MAX(ifn_len_max, ifn_len); 296 if (ifa->ifa_addr->sa_family == AF_INET6) 297 has_ipv6 = 1; 298 } 299 if (has_ipv6) { 300 net_len = 24; 301 addr_len = 39; 302 } else 303 net_len = 18; 304 } 305 306 xo_open_list("interface"); 307 if (!pfunc) { 308 xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name"); 309 xo_emit(" {T:/%5.5s} {T:/%-*.*s} {T:/%-*.*s} {T:/%8.8s} " 310 "{T:/%5.5s} {T:/%5.5s}", 311 "Mtu", net_len, net_len, "Network", addr_len, addr_len, 312 "Address", "Ipkts", "Ierrs", "Idrop"); 313 if (bflag) 314 xo_emit(" {T:/%10.10s}","Ibytes"); 315 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 316 if (bflag) 317 xo_emit(" {T:/%10.10s}","Obytes"); 318 xo_emit(" {T:/%5s}", "Coll"); 319 if (dflag) 320 xo_emit(" {T:/%5.5s}", "Drop"); 321 xo_emit("\n"); 322 } 323 324 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 325 bool network = false, link = false; 326 char *name, *xname, buf[IFNAMSIZ+1]; 327 const char *nn, *rn; 328 329 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 330 continue; 331 332 name = ifa->ifa_name; 333 334 if (pfunc) { 335 336 (*pfunc)(name); 337 338 /* 339 * Skip all ifaddrs belonging to same interface. 340 */ 341 while(ifa->ifa_next != NULL && 342 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 343 ifa = ifa->ifa_next; 344 } 345 continue; 346 } 347 348 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 349 continue; 350 351 xo_open_instance("interface"); 352 353 if ((ifa->ifa_flags & IFF_UP) == 0) { 354 xname = stpcpy(buf, name); 355 *xname++ = '*'; 356 *xname = '\0'; 357 xname = buf; 358 } else 359 xname = name; 360 361 xo_emit("{d:/%-*.*s}{etk:name}{eq:flags/0x%x}", 362 ifn_len_max, ifn_len_max, xname, name, ifa->ifa_flags); 363 364#define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 365 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); 366#undef IFA_MTU 367 368 switch (ifa->ifa_addr->sa_family) { 369 case AF_UNSPEC: 370 xo_emit("{:network/%-*.*s} ", net_len, net_len, 371 "none"); 372 xo_emit("{:address/%-*.*s} ", addr_len, addr_len, 373 "none"); 374 break; 375 case AF_INET: 376#ifdef INET6 377 case AF_INET6: 378#endif /* INET6 */ 379 nn = netname(ifa->ifa_addr, ifa->ifa_netmask); 380 rn = routename(ifa->ifa_addr, numeric_addr); 381 if (Wflag) { 382 xo_emit("{t:network/%-*s} ", net_len, nn); 383 xo_emit("{t:address/%-*s} ", addr_len, rn); 384 } else { 385 xo_emit("{d:network/%-*.*s}{et:network} ", 386 net_len, net_len, nn, nn); 387 xo_emit("{d:address/%-*.*s}{et:address} ", 388 addr_len, addr_len, rn, rn); 389 } 390 391 network = true; 392 break; 393 case AF_LINK: 394 { 395 struct sockaddr_dl *sdl; 396 char linknum[sizeof("<Link#32767>")]; 397 398 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 399 snprintf(linknum, sizeof(linknum), "<Link#%d>", sdl->sdl_index); 400 xo_emit("{t:network/%-*.*s} ", net_len, net_len, 401 linknum); 402 if (sdl->sdl_nlen == 0 && 403 sdl->sdl_alen == 0 && 404 sdl->sdl_slen == 0) 405 xo_emit("{P:/%*s} ", addr_len, ""); 406 else 407 xo_emit("{t:address/%-*.*s} ", addr_len, 408 addr_len, routename(ifa->ifa_addr, 1)); 409 link = true; 410 break; 411 } 412 } 413 414#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 415 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 416 link|network, 1); 417 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), 418 link, 1); 419 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), 420 link, 1); 421 if (bflag) 422 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 423 link|network, 0); 424 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 425 link|network, 1); 426 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link, 1); 427 if (bflag) 428 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 429 link|network, 0); 430 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), 431 link, 1); 432 if (dflag) 433 show_stat("LSlu", 5, "dropped-packets", 434 IFA_STAT(oqdrops), link, 1); 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 501struct 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 */ 516static void 517fill_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 */ 558static sig_atomic_t signalled; 559static void 560catchalarm(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 */ 571static void 572sidewaysintpr(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 590banner: 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 603loop: 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, 1); 620 show_stat("lu", 5, "received-errors", 621 new->ift_ie - old->ift_ie, 1, 1); 622 show_stat("lu", 5, "dropped-packets", 623 new->ift_id - old->ift_id, 1, 1); 624 show_stat("lu", 10, "received-bytes", 625 new->ift_ib - old->ift_ib, 1, 0); 626 show_stat("lu", 10, "sent-packets", 627 new->ift_op - old->ift_op, 1, 1); 628 show_stat("lu", 5, "send-errors", 629 new->ift_oe - old->ift_oe, 1, 1); 630 show_stat("lu", 10, "sent-bytes", 631 new->ift_ob - old->ift_ob, 1, 0); 632 show_stat("NRSlu", 5, "collisions", 633 new->ift_co - old->ift_co, 1, 1); 634 if (dflag) 635 show_stat("LSlu", 5, "dropped-packets", 636 new->ift_od - old->ift_od, 1, 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