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_var.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 79 static void sidewaysintpr(int); 80 81 #ifdef INET6 82 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */ 83 #endif 84 85 #ifdef PF 86 static const char* pfsyncacts[] = { 87 /* PFSYNC_ACT_CLR */ "clear all request", 88 /* PFSYNC_ACT_INS */ "state insert", 89 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 90 /* PFSYNC_ACT_UPD */ "state update", 91 /* PFSYNC_ACT_UPD_C */ "compressed state update", 92 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 93 /* PFSYNC_ACT_DEL */ "state delete", 94 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 95 /* PFSYNC_ACT_INS_F */ "fragment insert", 96 /* PFSYNC_ACT_DEL_F */ "fragment delete", 97 /* PFSYNC_ACT_BUS */ "bulk update mark", 98 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 99 /* PFSYNC_ACT_EOF */ "end of frame mark", 100 }; 101 102 static const char* pfsyncacts_name[] = { 103 /* PFSYNC_ACT_CLR */ "clear-all-request", 104 /* PFSYNC_ACT_INS */ "state-insert", 105 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 106 /* PFSYNC_ACT_UPD */ "state-update", 107 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 108 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 109 /* PFSYNC_ACT_DEL */ "state-delete", 110 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 111 /* PFSYNC_ACT_INS_F */ "fragment-insert", 112 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 113 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 114 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 115 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 116 }; 117 118 static void 119 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 120 { 121 int i; 122 123 xo_open_list(list); 124 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 125 if (*a || sflag <= 1) { 126 xo_open_instance(list); 127 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 128 pfsyncacts_name[i], (uintmax_t)(*a), 129 pfsyncacts[i], plural(*a), desc); 130 xo_close_instance(list); 131 } 132 } 133 xo_close_list(list); 134 } 135 136 /* 137 * Dump pfsync statistics structure. 138 */ 139 void 140 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 141 { 142 struct pfsyncstats pfsyncstat, zerostat; 143 size_t len = sizeof(struct pfsyncstats); 144 145 if (live) { 146 if (zflag) 147 memset(&zerostat, 0, len); 148 if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len, 149 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 150 if (errno != ENOENT) 151 warn("sysctl: net.pfsync.stats"); 152 return; 153 } 154 } else 155 kread(off, &pfsyncstat, len); 156 157 xo_emit("{T:/%s}:\n", name); 158 xo_open_container(name); 159 160 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 161 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 162 163 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 164 "{N:/packet%s received (IPv4)}\n"); 165 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 166 "{N:/packet%s received (IPv6)}\n"); 167 pfsync_acts_stats("input-histogram", "received", 168 &pfsyncstat.pfsyncs_iacts[0]); 169 p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} " 170 "{N:/packet%s discarded for bad interface}\n"); 171 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 172 "{N:/packet%s discarded for bad ttl}\n"); 173 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 174 "{N:/packet%s shorter than header}\n"); 175 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 176 "{N:/packet%s discarded for bad version}\n"); 177 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 178 "{N:/packet%s discarded for bad HMAC}\n"); 179 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 180 "{N:/packet%s discarded for bad action}\n"); 181 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 182 "{N:/packet%s discarded for short packet}\n"); 183 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 184 "{N:/state%s discarded for bad values}\n"); 185 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 186 "{N:/stale state%s}\n"); 187 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 188 "{N:/failed state lookup\\/insert%s}\n"); 189 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 190 "{N:/packet%s sent (IPv4})\n"); 191 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 192 "{N:/packet%s sent (IPv6})\n"); 193 pfsync_acts_stats("output-histogram", "sent", 194 &pfsyncstat.pfsyncs_oacts[0]); 195 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 196 "{N:/failure%s due to mbuf memory error}\n"); 197 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 198 "{N:/send error%s}\n"); 199 #undef p 200 xo_close_container(name); 201 } 202 #endif /* PF */ 203 204 /* 205 * Display a formatted value, or a '-' in the same space. 206 */ 207 static void 208 show_stat(const char *fmt, int width, const char *name, 209 u_long value, short showvalue) 210 { 211 const char *lsep, *rsep; 212 char newfmt[64]; 213 214 lsep = ""; 215 if (strncmp(fmt, "LS", 2) == 0) { 216 lsep = " "; 217 fmt += 2; 218 } 219 rsep = " "; 220 if (strncmp(fmt, "NRS", 3) == 0) { 221 rsep = ""; 222 fmt += 3; 223 } 224 if (showvalue == 0) { 225 /* Print just dash. */ 226 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 227 return; 228 } 229 230 /* 231 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 232 * take args... so we need to conditionally include it in the format. 233 */ 234 #define maybe_pad(pad) do { \ 235 if (strlen(pad)) { \ 236 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 237 xo_emit(newfmt); \ 238 } \ 239 } while (0) 240 241 if (hflag) { 242 char buf[5]; 243 244 /* Format in human readable form. */ 245 humanize_number(buf, sizeof(buf), (int64_t)value, "", 246 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 247 maybe_pad(lsep); 248 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 249 xo_emit(newfmt, buf); 250 maybe_pad(rsep); 251 } else { 252 /* Construct the format string. */ 253 maybe_pad(lsep); 254 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 255 name, width, fmt); 256 xo_emit(newfmt, value); 257 maybe_pad(rsep); 258 } 259 } 260 261 /* 262 * Find next multiaddr for a given interface name. 263 */ 264 static struct ifmaddrs * 265 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 266 { 267 268 for(; ifma != NULL; ifma = ifma->ifma_next) { 269 struct sockaddr_dl *sdl; 270 271 sdl = (struct sockaddr_dl *)ifma->ifma_name; 272 if (ifma->ifma_addr->sa_family == family && 273 strcmp(sdl->sdl_data, name) == 0) 274 break; 275 } 276 277 return (ifma); 278 } 279 280 /* 281 * Print a description of the network interfaces. 282 */ 283 void 284 intpr(int interval, void (*pfunc)(char *), int af) 285 { 286 struct ifaddrs *ifap, *ifa; 287 struct ifmaddrs *ifmap, *ifma; 288 289 if (interval) 290 return sidewaysintpr(interval); 291 292 if (getifaddrs(&ifap) != 0) 293 err(EX_OSERR, "getifaddrs"); 294 if (aflag && getifmaddrs(&ifmap) != 0) 295 err(EX_OSERR, "getifmaddrs"); 296 297 xo_open_list("interface"); 298 if (!pfunc) { 299 if (Wflag) 300 xo_emit("{T:/%-7.7s}", "Name"); 301 else 302 xo_emit("{T:/%-5.5s}", "Name"); 303 xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} " 304 "{T:/%5.5s} {T:/%5.5s}", 305 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 306 if (bflag) 307 xo_emit(" {T:/%10.10s}","Ibytes"); 308 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 309 if (bflag) 310 xo_emit(" {T:/%10.10s}","Obytes"); 311 xo_emit(" {T:/%5s}", "Coll"); 312 if (dflag) 313 xo_emit(" {T:/%s}", "Drop"); 314 xo_emit("\n"); 315 } 316 317 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 318 bool network = false, link = false; 319 char *name; 320 321 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 322 continue; 323 324 name = ifa->ifa_name; 325 326 if (pfunc) { 327 328 (*pfunc)(name); 329 330 /* 331 * Skip all ifaddrs belonging to same interface. 332 */ 333 while(ifa->ifa_next != NULL && 334 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 335 ifa = ifa->ifa_next; 336 } 337 continue; 338 } 339 340 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 341 continue; 342 343 xo_open_instance("interface"); 344 345 if (Wflag) 346 xo_emit("{tk:name/%-7.7s}", name); 347 else 348 xo_emit("{tk:name/%-5.5s}", name); 349 350 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 351 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa)); 352 #undef IFA_MTU 353 354 switch (ifa->ifa_addr->sa_family) { 355 case AF_UNSPEC: 356 xo_emit("{:network/%-13.13s} ", "none"); 357 xo_emit("{:address/%-15.15s} ", "none"); 358 break; 359 case AF_INET: 360 { 361 struct sockaddr_in *sin, *mask; 362 363 sin = (struct sockaddr_in *)ifa->ifa_addr; 364 mask = (struct sockaddr_in *)ifa->ifa_netmask; 365 xo_emit("{t:network/%-13.13s} ", 366 netname(sin->sin_addr.s_addr, 367 mask->sin_addr.s_addr)); 368 xo_emit("{t:address/%-17.17s} ", 369 routename(sin->sin_addr.s_addr)); 370 371 network = true; 372 break; 373 } 374 #ifdef INET6 375 case AF_INET6: 376 { 377 struct sockaddr_in6 *sin6, *mask; 378 379 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 380 mask = (struct sockaddr_in6 *)ifa->ifa_netmask; 381 382 xo_emit("{t:network/%-13.13s} ", 383 netname6(sin6, &mask->sin6_addr)); 384 getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len, 385 addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 386 xo_emit("{t:address/%-17.17s} ", addr_buf); 387 388 network = 1; 389 break; 390 } 391 #endif /* INET6 */ 392 case AF_LINK: 393 { 394 struct sockaddr_dl *sdl; 395 char *cp, linknum[10]; 396 int len = 32; 397 char buf[len]; 398 int n, z; 399 400 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 401 cp = (char *)LLADDR(sdl); 402 n = sdl->sdl_alen; 403 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 404 xo_emit("{t:network/%-13.13s} ", linknum); 405 buf[0] = '\0'; 406 z = 0; 407 while ((--n >= 0) && (z < len)) { 408 snprintf(buf + z, len - z, "%02x%c", 409 *cp++ & 0xff, n > 0 ? ':' : ' '); 410 z += 3; 411 } 412 if (z > 0) 413 xo_emit("{:address/%*s}", 32 - z, buf); 414 else 415 xo_emit("{P: }"); 416 link = 1; 417 break; 418 } 419 } 420 421 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 422 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 423 link|network); 424 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), link); 425 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), link); 426 if (bflag) 427 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 428 link|network); 429 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 430 link|network); 431 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link); 432 if (bflag) 433 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 434 link|network); 435 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), link); 436 if (dflag) 437 show_stat("LSlu", 5, "dropped-packets", 438 IFA_STAT(oqdrops), link); 439 xo_emit("\n"); 440 441 if (!aflag) { 442 xo_close_instance("interface"); 443 continue; 444 } 445 446 /* 447 * Print family's multicast addresses. 448 */ 449 xo_open_list("multicast-address"); 450 for (ifma = next_ifma(ifmap, ifa->ifa_name, 451 ifa->ifa_addr->sa_family); 452 ifma != NULL; 453 ifma = next_ifma(ifma, ifa->ifa_name, 454 ifa->ifa_addr->sa_family)) { 455 const char *fmt = NULL; 456 457 xo_open_instance("multicast-address"); 458 switch (ifma->ifma_addr->sa_family) { 459 case AF_INET: 460 { 461 struct sockaddr_in *sin; 462 463 sin = (struct sockaddr_in *)ifma->ifma_addr; 464 fmt = routename(sin->sin_addr.s_addr); 465 break; 466 } 467 #ifdef INET6 468 case AF_INET6: 469 470 /* in6_fillscopeid(&msa.in6); */ 471 getnameinfo(ifma->ifma_addr, 472 ifma->ifma_addr->sa_len, addr_buf, 473 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 474 xo_emit("{P:/%*s }{t:address/%-19.19s}", 475 Wflag ? 27 : 25, "", addr_buf); 476 break; 477 #endif /* INET6 */ 478 case AF_LINK: 479 { 480 struct sockaddr_dl *sdl; 481 482 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 483 switch (sdl->sdl_type) { 484 case IFT_ETHER: 485 case IFT_FDDI: 486 fmt = ether_ntoa( 487 (struct ether_addr *)LLADDR(sdl)); 488 break; 489 } 490 break; 491 } 492 } 493 494 if (fmt) { 495 xo_emit("{P:/%*s }{t:address/%-17.17s/}", 496 Wflag ? 27 : 25, "", fmt); 497 if (ifma->ifma_addr->sa_family == AF_LINK) { 498 xo_emit(" {:received-packets/%8lu}", 499 IFA_STAT(imcasts)); 500 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 501 xo_emit(" {:sent-packets/%8lu}", 502 IFA_STAT(omcasts)); 503 } 504 xo_emit("\n"); 505 } 506 xo_close_instance("multicast-address"); 507 ifma = ifma->ifma_next; 508 } 509 xo_close_list("multicast-address"); 510 xo_close_instance("interface"); 511 } 512 xo_close_list("interface"); 513 514 freeifaddrs(ifap); 515 if (aflag) 516 freeifmaddrs(ifmap); 517 } 518 519 struct iftot { 520 u_long ift_ip; /* input packets */ 521 u_long ift_ie; /* input errors */ 522 u_long ift_id; /* input drops */ 523 u_long ift_op; /* output packets */ 524 u_long ift_oe; /* output errors */ 525 u_long ift_od; /* output drops */ 526 u_long ift_co; /* collisions */ 527 u_long ift_ib; /* input bytes */ 528 u_long ift_ob; /* output bytes */ 529 }; 530 531 /* 532 * Obtain stats for interface(s). 533 */ 534 static void 535 fill_iftot(struct iftot *st) 536 { 537 struct ifaddrs *ifap, *ifa; 538 bool found = false; 539 540 if (getifaddrs(&ifap) != 0) 541 xo_err(EX_OSERR, "getifaddrs"); 542 543 bzero(st, sizeof(*st)); 544 545 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 546 if (ifa->ifa_addr->sa_family != AF_LINK) 547 continue; 548 if (interface) { 549 if (strcmp(ifa->ifa_name, interface) == 0) 550 found = true; 551 else 552 continue; 553 } 554 555 st->ift_ip += IFA_STAT(ipackets); 556 st->ift_ie += IFA_STAT(ierrors); 557 st->ift_id += IFA_STAT(iqdrops); 558 st->ift_ib += IFA_STAT(ibytes); 559 st->ift_op += IFA_STAT(opackets); 560 st->ift_oe += IFA_STAT(oerrors); 561 st->ift_od += IFA_STAT(oqdrops); 562 st->ift_ob += IFA_STAT(obytes); 563 st->ift_co += IFA_STAT(collisions); 564 } 565 566 if (interface && found == false) 567 xo_err(EX_DATAERR, "interface %s not found", interface); 568 569 freeifaddrs(ifap); 570 } 571 572 /* 573 * Set a flag to indicate that a signal from the periodic itimer has been 574 * caught. 575 */ 576 static sig_atomic_t signalled; 577 static void 578 catchalarm(int signo __unused) 579 { 580 signalled = true; 581 } 582 583 /* 584 * Print a running summary of interface statistics. 585 * Repeat display every interval seconds, showing statistics 586 * collected over that interval. Assumes that interval is non-zero. 587 * First line printed at top of screen is always cumulative. 588 */ 589 static void 590 sidewaysintpr(int interval) 591 { 592 struct iftot ift[2], *new, *old; 593 struct itimerval interval_it; 594 int oldmask, line; 595 596 new = &ift[0]; 597 old = &ift[1]; 598 fill_iftot(old); 599 600 (void)signal(SIGALRM, catchalarm); 601 signalled = false; 602 interval_it.it_interval.tv_sec = interval; 603 interval_it.it_interval.tv_usec = 0; 604 interval_it.it_value = interval_it.it_interval; 605 setitimer(ITIMER_REAL, &interval_it, NULL); 606 xo_open_list("interface-statistics"); 607 608 banner: 609 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 610 interface != NULL ? interface : "(Total)", "output"); 611 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 612 "{T:/%10s} {T:/%5s}", 613 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 614 "colls"); 615 if (dflag) 616 xo_emit(" {T:/%5.5s}", "drops"); 617 xo_emit("\n"); 618 xo_flush(); 619 line = 0; 620 621 loop: 622 if ((noutputs != 0) && (--noutputs == 0)) { 623 xo_close_list("interface-statistics"); 624 return; 625 } 626 oldmask = sigblock(sigmask(SIGALRM)); 627 while (!signalled) 628 sigpause(0); 629 signalled = false; 630 sigsetmask(oldmask); 631 line++; 632 633 fill_iftot(new); 634 635 xo_open_instance("stats"); 636 show_stat("lu", 10, "received-packets", 637 new->ift_ip - old->ift_ip, 1); 638 show_stat("lu", 5, "received-errors", 639 new->ift_ie - old->ift_ie, 1); 640 show_stat("lu", 5, "dropped-packets", 641 new->ift_id - old->ift_id, 1); 642 show_stat("lu", 10, "received-bytes", 643 new->ift_ib - old->ift_ib, 1); 644 show_stat("lu", 10, "sent-packets", 645 new->ift_op - old->ift_op, 1); 646 show_stat("lu", 5, "send-errors", 647 new->ift_oe - old->ift_oe, 1); 648 show_stat("lu", 10, "sent-bytes", 649 new->ift_ob - old->ift_ob, 1); 650 show_stat("NRSlu", 5, "collisions", 651 new->ift_co - old->ift_co, 1); 652 if (dflag) 653 show_stat("LSlu", 5, "dropped-packets", 654 new->ift_od - old->ift_od, 1); 655 xo_close_instance("stats"); 656 xo_emit("\n"); 657 xo_flush(); 658 659 if (new == &ift[0]) { 660 new = &ift[1]; 661 old = &ift[0]; 662 } else { 663 new = &ift[0]; 664 old = &ift[1]; 665 } 666 667 if (line == 21) 668 goto banner; 669 else 670 goto loop; 671 672 /* NOTREACHED */ 673 } 674