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_dl.h> 49 #include <net/if_types.h> 50 #include <net/ethernet.h> 51 #include <netinet/in.h> 52 #include <netinet/in_var.h> 53 #include <arpa/inet.h> 54 #ifdef PF 55 #include <net/pfvar.h> 56 #include <net/if_pfsync.h> 57 #endif 58 59 #include <err.h> 60 #include <errno.h> 61 #include <ifaddrs.h> 62 #include <libutil.h> 63 #ifdef INET6 64 #include <netdb.h> 65 #endif 66 #include <signal.h> 67 #include <stdbool.h> 68 #include <stdint.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <sysexits.h> 73 #include <unistd.h> 74 #include <libxo/xo.h> 75 76 #include "netstat.h" 77 78 static void sidewaysintpr(int); 79 80 #ifdef INET6 81 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */ 82 #endif 83 84 #ifdef PF 85 static const char* pfsyncacts[] = { 86 /* PFSYNC_ACT_CLR */ "clear all request", 87 /* PFSYNC_ACT_INS */ "state insert", 88 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 89 /* PFSYNC_ACT_UPD */ "state update", 90 /* PFSYNC_ACT_UPD_C */ "compressed state update", 91 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 92 /* PFSYNC_ACT_DEL */ "state delete", 93 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 94 /* PFSYNC_ACT_INS_F */ "fragment insert", 95 /* PFSYNC_ACT_DEL_F */ "fragment delete", 96 /* PFSYNC_ACT_BUS */ "bulk update mark", 97 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 98 /* PFSYNC_ACT_EOF */ "end of frame mark", 99 }; 100 101 static const char* pfsyncacts_name[] = { 102 /* PFSYNC_ACT_CLR */ "clear-all-request", 103 /* PFSYNC_ACT_INS */ "state-insert", 104 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 105 /* PFSYNC_ACT_UPD */ "state-update", 106 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 107 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 108 /* PFSYNC_ACT_DEL */ "state-delete", 109 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 110 /* PFSYNC_ACT_INS_F */ "fragment-insert", 111 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 112 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 113 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 114 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 115 }; 116 117 static void 118 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 119 { 120 int i; 121 122 xo_open_list(list); 123 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 124 if (*a || sflag <= 1) { 125 xo_open_instance(list); 126 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 127 pfsyncacts_name[i], (uintmax_t)(*a), 128 pfsyncacts[i], plural(*a), desc); 129 xo_close_instance(list); 130 } 131 } 132 xo_close_list(list); 133 } 134 135 /* 136 * Dump pfsync statistics structure. 137 */ 138 void 139 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 140 { 141 struct pfsyncstats pfsyncstat, zerostat; 142 size_t len = sizeof(struct pfsyncstats); 143 144 if (live) { 145 if (zflag) 146 memset(&zerostat, 0, len); 147 if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len, 148 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 149 if (errno != ENOENT) 150 warn("sysctl: net.pfsync.stats"); 151 return; 152 } 153 } else 154 kread(off, &pfsyncstat, len); 155 156 xo_emit("{T:/%s}:\n", name); 157 xo_open_container(name); 158 159 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 160 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 161 162 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 163 "{N:/packet%s received (IPv4)}\n"); 164 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 165 "{N:/packet%s received (IPv6)}\n"); 166 pfsync_acts_stats("input-histogram", "received", 167 &pfsyncstat.pfsyncs_iacts[0]); 168 p(pfsyncs_badif, "\t\t/{:dropped-bad-interface/%ju} " 169 "{N:/packet%s discarded for bad interface}\n"); 170 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 171 "{N:/packet%s discarded for bad ttl}\n"); 172 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 173 "{N:/packet%s shorter than header}\n"); 174 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 175 "{N:/packet%s discarded for bad version}\n"); 176 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 177 "{N:/packet%s discarded for bad HMAC}\n"); 178 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 179 "{N:/packet%s discarded for bad action}\n"); 180 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 181 "{N:/packet%s discarded for short packet}\n"); 182 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 183 "{N:/state%s discarded for bad values}\n"); 184 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 185 "{N:/stale state%s}\n"); 186 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 187 "{N:/failed state lookup\\/insert%s}\n"); 188 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 189 "{N:/packet%s sent (IPv4})\n"); 190 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 191 "{N:/packet%s sent (IPv6})\n"); 192 pfsync_acts_stats("output-histogram", "sent", 193 &pfsyncstat.pfsyncs_oacts[0]); 194 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 195 "{N:/failure%s due to mbuf memory error}\n"); 196 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 197 "{N:/send error%s}\n"); 198 #undef p 199 xo_close_container(name); 200 } 201 #endif /* PF */ 202 203 /* 204 * Display a formatted value, or a '-' in the same space. 205 */ 206 static void 207 show_stat(const char *fmt, int width, const char *name, 208 u_long value, short showvalue) 209 { 210 const char *lsep, *rsep; 211 char newfmt[64]; 212 213 lsep = ""; 214 if (strncmp(fmt, "LS", 2) == 0) { 215 lsep = " "; 216 fmt += 2; 217 } 218 rsep = " "; 219 if (strncmp(fmt, "NRS", 3) == 0) { 220 rsep = ""; 221 fmt += 3; 222 } 223 if (showvalue == 0) { 224 /* Print just dash. */ 225 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 226 return; 227 } 228 229 /* 230 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 231 * take args... so we need to conditionally include it in the format. 232 */ 233 #define maybe_pad(pad) do { \ 234 if (strlen(pad)) { \ 235 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 236 xo_emit(newfmt); \ 237 } \ 238 } while (0) 239 240 if (hflag) { 241 char buf[5]; 242 243 /* Format in human readable form. */ 244 humanize_number(buf, sizeof(buf), (int64_t)value, "", 245 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 246 maybe_pad(lsep); 247 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 248 xo_emit(newfmt, buf); 249 maybe_pad(rsep); 250 } else { 251 /* Construct the format string. */ 252 maybe_pad(lsep); 253 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 254 name, width, fmt); 255 xo_emit(newfmt, value); 256 maybe_pad(rsep); 257 } 258 } 259 260 /* 261 * Find next multiaddr for a given interface name. 262 */ 263 static struct ifmaddrs * 264 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 265 { 266 267 for(; ifma != NULL; ifma = ifma->ifma_next) { 268 struct sockaddr_dl *sdl; 269 270 sdl = (struct sockaddr_dl *)ifma->ifma_name; 271 if (ifma->ifma_addr->sa_family == family && 272 strcmp(sdl->sdl_data, name) == 0) 273 break; 274 } 275 276 return (ifma); 277 } 278 279 /* 280 * Print a description of the network interfaces. 281 */ 282 void 283 intpr(int interval, void (*pfunc)(char *), int af) 284 { 285 struct ifaddrs *ifap, *ifa; 286 struct ifmaddrs *ifmap, *ifma; 287 288 if (interval) 289 return sidewaysintpr(interval); 290 291 if (getifaddrs(&ifap) != 0) 292 err(EX_OSERR, "getifaddrs"); 293 if (aflag && getifmaddrs(&ifmap) != 0) 294 err(EX_OSERR, "getifmaddrs"); 295 296 xo_open_list("interface"); 297 if (!pfunc) { 298 if (Wflag) 299 xo_emit("{T:/%-7.7s}", "Name"); 300 else 301 xo_emit("{T:/%-5.5s}", "Name"); 302 xo_emit(" {T:/%5.5s} {T:/%-13.13s} {T:/%-17.17s} {T:/%8.8s} " 303 "{T:/%5.5s} {T:/%5.5s}", 304 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 305 if (bflag) 306 xo_emit(" {T:/%10.10s}","Ibytes"); 307 xo_emit(" {T:/%8.8s} {T:/%5.5s}", "Opkts", "Oerrs"); 308 if (bflag) 309 xo_emit(" {T:/%10.10s}","Obytes"); 310 xo_emit(" {T:/%5s}", "Coll"); 311 if (dflag) 312 xo_emit(" {T:/%s}", "Drop"); 313 xo_emit("\n"); 314 } 315 316 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 317 bool network = false, link = false; 318 char *name; 319 320 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 321 continue; 322 323 name = ifa->ifa_name; 324 325 if (pfunc) { 326 327 (*pfunc)(name); 328 329 /* 330 * Skip all ifaddrs belonging to same interface. 331 */ 332 while(ifa->ifa_next != NULL && 333 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 334 ifa = ifa->ifa_next; 335 } 336 continue; 337 } 338 339 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 340 continue; 341 342 xo_open_instance("interface"); 343 344 if (Wflag) 345 xo_emit("{tk:name/%-7.7s}", name); 346 else 347 xo_emit("{tk:name/%-5.5s}", name); 348 349 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 350 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa)); 351 #undef IFA_MTU 352 353 switch (ifa->ifa_addr->sa_family) { 354 case AF_UNSPEC: 355 xo_emit("{:network/%-13.13s} ", "none"); 356 xo_emit("{:address/%-15.15s} ", "none"); 357 break; 358 case AF_INET: 359 { 360 struct sockaddr_in *sin, *mask; 361 362 sin = (struct sockaddr_in *)ifa->ifa_addr; 363 mask = (struct sockaddr_in *)ifa->ifa_netmask; 364 xo_emit("{t:network/%-13.13s} ", 365 netname(sin->sin_addr.s_addr, 366 mask->sin_addr.s_addr)); 367 xo_emit("{t:address/%-17.17s} ", 368 routename(sin->sin_addr.s_addr)); 369 370 network = true; 371 break; 372 } 373 #ifdef INET6 374 case AF_INET6: 375 { 376 struct sockaddr_in6 *sin6, *mask; 377 378 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 379 mask = (struct sockaddr_in6 *)ifa->ifa_netmask; 380 381 xo_emit("{t:network/%-13.13s} ", 382 netname6(sin6, &mask->sin6_addr)); 383 getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len, 384 addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 385 xo_emit("{t:address/%-17.17s} ", addr_buf); 386 387 network = 1; 388 break; 389 } 390 #endif /* INET6 */ 391 case AF_LINK: 392 { 393 struct sockaddr_dl *sdl; 394 char *cp, linknum[10]; 395 int len = 32; 396 char buf[len]; 397 int n, z; 398 399 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 400 cp = (char *)LLADDR(sdl); 401 n = sdl->sdl_alen; 402 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 403 xo_emit("{t:network/%-13.13s} ", linknum); 404 buf[0] = '\0'; 405 z = 0; 406 while ((--n >= 0) && (z < len)) { 407 snprintf(buf + z, len - z, "%02x%c", 408 *cp++ & 0xff, n > 0 ? ':' : ' '); 409 z += 3; 410 } 411 if (z > 0) 412 xo_emit("{:address/%*s}", 32 - z, buf); 413 else 414 xo_emit("{P: }"); 415 link = 1; 416 break; 417 } 418 } 419 420 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 421 show_stat("lu", 8, "received-packets", IFA_STAT(ipackets), 422 link|network); 423 show_stat("lu", 5, "received-errors", IFA_STAT(ierrors), link); 424 show_stat("lu", 5, "dropped-packets", IFA_STAT(iqdrops), link); 425 if (bflag) 426 show_stat("lu", 10, "received-bytes", IFA_STAT(ibytes), 427 link|network); 428 show_stat("lu", 8, "sent-packets", IFA_STAT(opackets), 429 link|network); 430 show_stat("lu", 5, "send-errors", IFA_STAT(oerrors), link); 431 if (bflag) 432 show_stat("lu", 10, "sent-bytes", IFA_STAT(obytes), 433 link|network); 434 show_stat("NRSlu", 5, "collisions", IFA_STAT(collisions), link); 435 if (dflag) 436 show_stat("LSlu", 5, "dropped-packets", 437 IFA_STAT(oqdrops), link); 438 xo_emit("\n"); 439 440 if (!aflag) { 441 xo_close_instance("interface"); 442 continue; 443 } 444 445 /* 446 * Print family's multicast addresses. 447 */ 448 xo_open_list("multicast-address"); 449 for (ifma = next_ifma(ifmap, ifa->ifa_name, 450 ifa->ifa_addr->sa_family); 451 ifma != NULL; 452 ifma = next_ifma(ifma, ifa->ifa_name, 453 ifa->ifa_addr->sa_family)) { 454 const char *fmt = NULL; 455 456 xo_open_instance("multicast-address"); 457 switch (ifma->ifma_addr->sa_family) { 458 case AF_INET: 459 { 460 struct sockaddr_in *sin; 461 462 sin = (struct sockaddr_in *)ifma->ifma_addr; 463 fmt = routename(sin->sin_addr.s_addr); 464 break; 465 } 466 #ifdef INET6 467 case AF_INET6: 468 469 /* in6_fillscopeid(&msa.in6); */ 470 getnameinfo(ifma->ifma_addr, 471 ifma->ifma_addr->sa_len, addr_buf, 472 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 473 xo_emit("{P:/%*s }{t:address/%-19.19s}", 474 Wflag ? 27 : 25, "", addr_buf); 475 break; 476 #endif /* INET6 */ 477 case AF_LINK: 478 { 479 struct sockaddr_dl *sdl; 480 481 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 482 switch (sdl->sdl_type) { 483 case IFT_ETHER: 484 case IFT_FDDI: 485 fmt = ether_ntoa( 486 (struct ether_addr *)LLADDR(sdl)); 487 break; 488 } 489 break; 490 } 491 } 492 493 if (fmt) { 494 xo_emit("{P:/%*s }{t:address/%-17.17s/}", 495 Wflag ? 27 : 25, "", fmt); 496 if (ifma->ifma_addr->sa_family == AF_LINK) { 497 xo_emit(" {:received-packets/%8lu}", 498 IFA_STAT(imcasts)); 499 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 500 xo_emit(" {:sent-packets/%8lu}", 501 IFA_STAT(omcasts)); 502 } 503 xo_emit("\n"); 504 } 505 xo_close_instance("multicast-address"); 506 ifma = ifma->ifma_next; 507 } 508 xo_close_list("multicast-address"); 509 xo_close_instance("interface"); 510 } 511 xo_close_list("interface"); 512 513 freeifaddrs(ifap); 514 if (aflag) 515 freeifmaddrs(ifmap); 516 } 517 518 struct iftot { 519 u_long ift_ip; /* input packets */ 520 u_long ift_ie; /* input errors */ 521 u_long ift_id; /* input drops */ 522 u_long ift_op; /* output packets */ 523 u_long ift_oe; /* output errors */ 524 u_long ift_od; /* output drops */ 525 u_long ift_co; /* collisions */ 526 u_long ift_ib; /* input bytes */ 527 u_long ift_ob; /* output bytes */ 528 }; 529 530 /* 531 * Obtain stats for interface(s). 532 */ 533 static void 534 fill_iftot(struct iftot *st) 535 { 536 struct ifaddrs *ifap, *ifa; 537 bool found = false; 538 539 if (getifaddrs(&ifap) != 0) 540 xo_err(EX_OSERR, "getifaddrs"); 541 542 bzero(st, sizeof(*st)); 543 544 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 545 if (ifa->ifa_addr->sa_family != AF_LINK) 546 continue; 547 if (interface) { 548 if (strcmp(ifa->ifa_name, interface) == 0) 549 found = true; 550 else 551 continue; 552 } 553 554 st->ift_ip += IFA_STAT(ipackets); 555 st->ift_ie += IFA_STAT(ierrors); 556 st->ift_id += IFA_STAT(iqdrops); 557 st->ift_ib += IFA_STAT(ibytes); 558 st->ift_op += IFA_STAT(opackets); 559 st->ift_oe += IFA_STAT(oerrors); 560 st->ift_od += IFA_STAT(oqdrops); 561 st->ift_ob += IFA_STAT(obytes); 562 st->ift_co += IFA_STAT(collisions); 563 } 564 565 if (interface && found == false) 566 xo_err(EX_DATAERR, "interface %s not found", interface); 567 568 freeifaddrs(ifap); 569 } 570 571 /* 572 * Set a flag to indicate that a signal from the periodic itimer has been 573 * caught. 574 */ 575 static sig_atomic_t signalled; 576 static void 577 catchalarm(int signo __unused) 578 { 579 signalled = true; 580 } 581 582 /* 583 * Print a running summary of interface statistics. 584 * Repeat display every interval seconds, showing statistics 585 * collected over that interval. Assumes that interval is non-zero. 586 * First line printed at top of screen is always cumulative. 587 */ 588 static void 589 sidewaysintpr(int interval) 590 { 591 struct iftot ift[2], *new, *old; 592 struct itimerval interval_it; 593 int oldmask, line; 594 595 new = &ift[0]; 596 old = &ift[1]; 597 fill_iftot(old); 598 599 (void)signal(SIGALRM, catchalarm); 600 signalled = false; 601 interval_it.it_interval.tv_sec = interval; 602 interval_it.it_interval.tv_usec = 0; 603 interval_it.it_value = interval_it.it_interval; 604 setitimer(ITIMER_REAL, &interval_it, NULL); 605 xo_open_list("interface-statistics"); 606 607 banner: 608 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 609 interface != NULL ? interface : "(Total)", "output"); 610 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 611 "{T:/%10s} {T:/%5s}", 612 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 613 "colls"); 614 if (dflag) 615 xo_emit(" {T:/%5.5s}", "drops"); 616 xo_emit("\n"); 617 xo_flush(); 618 line = 0; 619 620 loop: 621 if ((noutputs != 0) && (--noutputs == 0)) { 622 xo_close_list("interface-statistics"); 623 return; 624 } 625 oldmask = sigblock(sigmask(SIGALRM)); 626 while (!signalled) 627 sigpause(0); 628 signalled = false; 629 sigsetmask(oldmask); 630 line++; 631 632 fill_iftot(new); 633 634 xo_open_instance("stats"); 635 show_stat("lu", 10, "received-packets", 636 new->ift_ip - old->ift_ip, 1); 637 show_stat("lu", 5, "received-errors", 638 new->ift_ie - old->ift_ie, 1); 639 show_stat("lu", 5, "dropped-packets", 640 new->ift_id - old->ift_id, 1); 641 show_stat("lu", 10, "received-bytes", 642 new->ift_ib - old->ift_ib, 1); 643 show_stat("lu", 10, "sent-packets", 644 new->ift_op - old->ift_op, 1); 645 show_stat("lu", 5, "send-errors", 646 new->ift_oe - old->ift_oe, 1); 647 show_stat("lu", 10, "sent-bytes", 648 new->ift_ob - old->ift_ob, 1); 649 show_stat("NRSlu", 5, "collisions", 650 new->ift_co - old->ift_co, 1); 651 if (dflag) 652 show_stat("LSlu", 5, "dropped-packets", 653 new->ift_od - old->ift_od, 1); 654 xo_close_instance("stats"); 655 xo_emit("\n"); 656 xo_flush(); 657 658 if (new == &ift[0]) { 659 new = &ift[1]; 660 old = &ift[0]; 661 } else { 662 new = &ift[0]; 663 old = &ift[1]; 664 } 665 666 if (line == 21) 667 goto banner; 668 else 669 goto loop; 670 671 /* NOTREACHED */ 672 } 673