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 #include <sys/param.h> 34 #include <sys/protosw.h> 35 #include <sys/socket.h> 36 #include <sys/socketvar.h> 37 #include <sys/time.h> 38 39 #include <net/if.h> 40 #include <net/if_dl.h> 41 #include <net/if_types.h> 42 #include <net/ethernet.h> 43 #include <netinet/in.h> 44 #include <netinet/in_var.h> 45 #include <arpa/inet.h> 46 #ifdef PF 47 #include <net/pfvar.h> 48 #include <net/pflow.h> 49 #include <net/if_pfsync.h> 50 #endif 51 52 #include <errno.h> 53 #include <ifaddrs.h> 54 #include <libutil.h> 55 #ifdef INET6 56 #include <netdb.h> 57 #endif 58 #include <signal.h> 59 #include <stdbool.h> 60 #include <stdint.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <sysexits.h> 65 #include <unistd.h> 66 #include <libxo/xo.h> 67 68 #include "netstat.h" 69 70 static void sidewaysintpr(void); 71 72 #ifdef PF 73 static const char* pfsyncacts[] = { 74 /* PFSYNC_ACT_CLR */ "clear all request", 75 /* PFSYNC_ACT_INS_1301 */ "13.1 state insert", 76 /* PFSYNC_ACT_INS_ACK */ "state inserted ack", 77 /* PFSYNC_ACT_UPD_1301 */ "13.1 state update", 78 /* PFSYNC_ACT_UPD_C */ "compressed state update", 79 /* PFSYNC_ACT_UPD_REQ */ "uncompressed state request", 80 /* PFSYNC_ACT_DEL */ "state delete", 81 /* PFSYNC_ACT_DEL_C */ "compressed state delete", 82 /* PFSYNC_ACT_INS_F */ "fragment insert", 83 /* PFSYNC_ACT_DEL_F */ "fragment delete", 84 /* PFSYNC_ACT_BUS */ "bulk update mark", 85 /* PFSYNC_ACT_TDB */ "TDB replay counter update", 86 /* PFSYNC_ACT_EOF */ "end of frame mark", 87 /* PFSYNC_ACT_INS_1400 */ "14.0 state insert", 88 /* PFSYNC_ACT_UPD_1400 */ "14.0 state update", 89 /* PFSYNC_ACT_INS_1500 */ "state insert", 90 /* PFSYNC_ACT_UPD_1500 */ "state update", 91 }; 92 93 static const char* pfsyncacts_name[] = { 94 /* PFSYNC_ACT_CLR */ "clear-all-request", 95 /* PFSYNC_ACT_INS_1301 */ "state-insert-1301", 96 /* PFSYNC_ACT_INS_ACK */ "state-inserted-ack", 97 /* PFSYNC_ACT_UPD_1301 */ "state-update-1301", 98 /* PFSYNC_ACT_UPD_C */ "compressed-state-update", 99 /* PFSYNC_ACT_UPD_REQ */ "uncompressed-state-request", 100 /* PFSYNC_ACT_DEL */ "state-delete", 101 /* PFSYNC_ACT_DEL_C */ "compressed-state-delete", 102 /* PFSYNC_ACT_INS_F */ "fragment-insert", 103 /* PFSYNC_ACT_DEL_F */ "fragment-delete", 104 /* PFSYNC_ACT_BUS */ "bulk-update-mark", 105 /* PFSYNC_ACT_TDB */ "TDB-replay-counter-update", 106 /* PFSYNC_ACT_EOF */ "end-of-frame-mark", 107 /* PFSYNC_ACT_INS_1400 */ "state-insert-1400", 108 /* PFSYNC_ACT_UPD_1400 */ "state-update-1400", 109 /* PFSYNC_ACT_INS_1500 */ "state-insert", 110 /* PFSYNC_ACT_UPD_1500 */ "state-update", 111 }; 112 113 static void 114 pfsync_acts_stats(const char *list, const char *desc, uint64_t *a) 115 { 116 int i; 117 118 xo_open_list(list); 119 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) { 120 if (*a || sflag <= 1) { 121 xo_open_instance(list); 122 xo_emit("\t\t{e:name}{:count/%ju} {N:/%s%s %s}\n", 123 pfsyncacts_name[i], (uintmax_t)(*a), 124 pfsyncacts[i], plural(*a), desc); 125 xo_close_instance(list); 126 } 127 } 128 xo_close_list(list); 129 } 130 131 /* 132 * Dump pfsync statistics structure. 133 */ 134 void 135 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 136 { 137 struct pfsyncstats pfsyncstat; 138 139 if (fetch_stats("net.pfsync.stats", off, &pfsyncstat, 140 sizeof(pfsyncstat), kread) != 0) 141 return; 142 143 xo_emit("{T:/%s}:\n", name); 144 xo_open_container(name); 145 146 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 147 xo_emit(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 148 149 p(pfsyncs_ipackets, "\t{:received-inet-packets/%ju} " 150 "{N:/packet%s received (IPv4)}\n"); 151 p(pfsyncs_ipackets6, "\t{:received-inet6-packets/%ju} " 152 "{N:/packet%s received (IPv6)}\n"); 153 pfsync_acts_stats("input-histogram", "received", 154 &pfsyncstat.pfsyncs_iacts[0]); 155 p(pfsyncs_badif, "\t\t{:dropped-bad-interface/%ju} " 156 "{N:/packet%s discarded for bad interface}\n"); 157 p(pfsyncs_badttl, "\t\t{:dropped-bad-ttl/%ju} " 158 "{N:/packet%s discarded for bad ttl}\n"); 159 p(pfsyncs_hdrops, "\t\t{:dropped-short-header/%ju} " 160 "{N:/packet%s shorter than header}\n"); 161 p(pfsyncs_badver, "\t\t{:dropped-bad-version/%ju} " 162 "{N:/packet%s discarded for bad version}\n"); 163 p(pfsyncs_badauth, "\t\t{:dropped-bad-auth/%ju} " 164 "{N:/packet%s discarded for bad HMAC}\n"); 165 p(pfsyncs_badact,"\t\t{:dropped-bad-action/%ju} " 166 "{N:/packet%s discarded for bad action}\n"); 167 p(pfsyncs_badlen, "\t\t{:dropped-short/%ju} " 168 "{N:/packet%s discarded for short packet}\n"); 169 p(pfsyncs_badval, "\t\t{:dropped-bad-values/%ju} " 170 "{N:/state%s discarded for bad values}\n"); 171 p(pfsyncs_stale, "\t\t{:dropped-stale-state/%ju} " 172 "{N:/stale state%s}\n"); 173 p(pfsyncs_badstate, "\t\t{:dropped-failed-lookup/%ju} " 174 "{N:/failed state lookup\\/insert%s}\n"); 175 p(pfsyncs_opackets, "\t{:sent-inet-packets/%ju} " 176 "{N:/packet%s sent (IPv4})\n"); 177 p(pfsyncs_opackets6, "\t{:send-inet6-packets/%ju} " 178 "{N:/packet%s sent (IPv6})\n"); 179 pfsync_acts_stats("output-histogram", "sent", 180 &pfsyncstat.pfsyncs_oacts[0]); 181 p(pfsyncs_onomem, "\t\t{:discarded-no-memory/%ju} " 182 "{N:/failure%s due to mbuf memory error}\n"); 183 p(pfsyncs_oerrors, "\t\t{:send-errors/%ju} " 184 "{N:/send error%s}\n"); 185 #undef p 186 xo_close_container(name); 187 } 188 189 void 190 pflow_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 191 { 192 struct pflowstats pflowstat; 193 194 if (fetch_stats("net.pflow.stats", off, &pflowstat, 195 sizeof(pflowstat), kread) != 0) 196 return; 197 198 xo_emit("{T:/%s}:\n", name); 199 xo_open_container(name); 200 201 #define p(f, m) if (pflowstat.f || sflag <= 1) \ 202 xo_emit(m, (uintmax_t)pflowstat.f, plural(pflowstat.f)) 203 204 p(pflow_flows, "\t{:flows/%ju} {N:/flow%s sent}\n"); 205 p(pflow_packets, "\t{:packets/%ju} {N:/packet%s sent}\n"); 206 p(pflow_onomem, "\t{:nomem/%ju} " 207 "{N:/send failed due to mbuf memory error}\n"); 208 p(pflow_oerrors, "\t{:send-error/%ju} {N:/send error}\n"); 209 #undef p 210 211 xo_close_container(name); 212 } 213 #endif /* PF */ 214 215 /* 216 * Display a formatted value, or a '-' in the same space. 217 */ 218 static void 219 show_stat(const char *fmt, int width, const char *name, 220 u_long value, short showvalue, int div1000) 221 { 222 const char *lsep, *rsep; 223 char newfmt[64]; 224 225 lsep = ""; 226 if (strncmp(fmt, "LS", 2) == 0) { 227 lsep = " "; 228 fmt += 2; 229 } 230 rsep = " "; 231 if (strncmp(fmt, "NRS", 3) == 0) { 232 rsep = ""; 233 fmt += 3; 234 } 235 if (showvalue == 0) { 236 /* Print just dash. */ 237 xo_emit("{P:/%s}{D:/%*s}{P:/%s}", lsep, width, "-", rsep); 238 return; 239 } 240 241 /* 242 * XXX: workaround {P:} modifier can't be empty and doesn't seem to 243 * take args... so we need to conditionally include it in the format. 244 */ 245 #define maybe_pad(pad) do { \ 246 if (strlen(pad)) { \ 247 snprintf(newfmt, sizeof(newfmt), "{P:%s}", pad); \ 248 xo_emit(newfmt); \ 249 } \ 250 } while (0) 251 252 if (hflag) { 253 char buf[5]; 254 255 /* Format in human readable form. */ 256 humanize_number(buf, sizeof(buf), (int64_t)value, "", 257 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL | \ 258 ((div1000) ? HN_DIVISOR_1000 : 0)); 259 maybe_pad(lsep); 260 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%ds}", name, width); 261 xo_emit(newfmt, buf); 262 maybe_pad(rsep); 263 } else { 264 /* Construct the format string. */ 265 maybe_pad(lsep); 266 snprintf(newfmt, sizeof(newfmt), "{:%s/%%%d%s}", 267 name, width, fmt); 268 xo_emit(newfmt, value); 269 maybe_pad(rsep); 270 } 271 } 272 273 /* 274 * Find next multiaddr for a given interface name. 275 */ 276 static struct ifmaddrs * 277 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 278 { 279 280 for(; ifma != NULL; ifma = ifma->ifma_next) { 281 struct sockaddr_dl *sdl; 282 283 sdl = (struct sockaddr_dl *)ifma->ifma_name; 284 if (ifma->ifma_addr->sa_family == family && 285 sdl->sdl_nlen == strlen(name) && 286 strncmp(sdl->sdl_data, name, sdl->sdl_nlen) == 0) 287 break; 288 } 289 290 return (ifma); 291 } 292 293 enum process_op { MEASURE, EMIT }; 294 295 static void 296 process_ifa_addr(enum process_op op, struct ifaddrs *ifa, int *max_net_len, 297 int *max_addr_len, bool *network, bool *link) 298 { 299 int net_len, addr_len; 300 const char *nn, *rn; 301 302 if (op == EMIT) { 303 net_len = *max_net_len; 304 addr_len = *max_addr_len; 305 } 306 307 switch (ifa->ifa_addr->sa_family) { 308 case AF_UNSPEC: 309 if (op == MEASURE) { 310 net_len = strlen("none"); 311 addr_len = strlen("none"); 312 } else { 313 xo_emit("{:network/%-*.*s} ", net_len, net_len, 314 "none"); 315 xo_emit("{:address/%-*.*s} ", addr_len, addr_len, 316 "none"); 317 } 318 break; 319 case AF_INET: 320 #ifdef INET6 321 case AF_INET6: 322 #endif /* INET6 */ 323 nn = netname(ifa->ifa_addr, ifa->ifa_netmask); 324 rn = routename(ifa->ifa_addr, numeric_addr); 325 if (op == MEASURE) { 326 net_len = strlen(nn); 327 addr_len = strlen(rn); 328 } else { 329 xo_emit("{t:network/%-*s} ", net_len, nn); 330 xo_emit("{t:address/%-*s} ", addr_len, rn); 331 } 332 333 if (network != NULL) 334 *network = true; 335 break; 336 case AF_LINK: 337 { 338 struct sockaddr_dl *sdl; 339 char linknum[sizeof("<Link#32767>")]; 340 341 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 342 snprintf(linknum, sizeof(linknum), "<Link#%d>", sdl->sdl_index); 343 if (op == MEASURE) { 344 net_len = strlen(linknum); 345 if (sdl->sdl_nlen == 0 && 346 sdl->sdl_alen == 0 && 347 sdl->sdl_slen == 0) 348 addr_len = 1; 349 else 350 addr_len = strlen(routename(ifa->ifa_addr, 1)); 351 } else { 352 xo_emit("{t:network/%-*.*s} ", net_len, net_len, 353 linknum); 354 if (sdl->sdl_nlen == 0 && 355 sdl->sdl_alen == 0 && 356 sdl->sdl_slen == 0) 357 xo_emit("{P:/%*s} ", addr_len, ""); 358 else 359 xo_emit("{t:address/%-*.*s} ", addr_len, 360 addr_len, routename(ifa->ifa_addr, 1)); 361 } 362 if (link != NULL) 363 *link = true; 364 break; 365 } 366 } 367 368 if (op == MEASURE) { 369 if (net_len > *max_net_len) 370 *max_net_len = net_len; 371 if (addr_len > *max_addr_len) 372 *max_addr_len = addr_len; 373 } 374 } 375 376 static int 377 max_num_len(int max_len, u_long num) 378 { 379 int len = 2; /* include space */ 380 381 for (; num > 10; len++) 382 num /= 10; 383 return (MAX(max_len, len)); 384 } 385 386 /* 387 * Print a description of the network interfaces. 388 */ 389 void 390 intpr(void (*pfunc)(char *), int af) 391 { 392 struct ifaddrs *ifap, *ifa; 393 struct ifmaddrs *ifmap, *ifma; 394 u_int ifn_len_max = 5, ifn_len; 395 u_int net_len = strlen("Network "), addr_len = strlen("Address "); 396 u_int npkt_len = 8, nbyte_len = 10, nerr_len = 5; 397 398 if (interval) 399 return sidewaysintpr(); 400 401 if (getifaddrs(&ifap) != 0) 402 xo_err(EX_OSERR, "getifaddrs"); 403 if (aflag && getifmaddrs(&ifmap) != 0) 404 xo_err(EX_OSERR, "getifmaddrs"); 405 406 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 407 if (interface != NULL && 408 strcmp(ifa->ifa_name, interface) != 0) 409 continue; 410 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 411 continue; 412 ifn_len = strlen(ifa->ifa_name); 413 if ((ifa->ifa_flags & IFF_UP) == 0) 414 ++ifn_len; 415 ifn_len_max = MAX(ifn_len_max, ifn_len); 416 process_ifa_addr(MEASURE, ifa, &net_len, &addr_len, 417 NULL, NULL); 418 419 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 420 if (!hflag) { 421 npkt_len = max_num_len(npkt_len, IFA_STAT(ipackets)); 422 npkt_len = max_num_len(npkt_len, IFA_STAT(opackets)); 423 nerr_len = max_num_len(nerr_len, IFA_STAT(ierrors)); 424 nerr_len = max_num_len(nerr_len, IFA_STAT(iqdrops)); 425 nerr_len = max_num_len(nerr_len, IFA_STAT(collisions)); 426 if (dflag) 427 nerr_len = max_num_len(nerr_len, 428 IFA_STAT(oqdrops)); 429 if (bflag) { 430 nbyte_len = max_num_len(nbyte_len, 431 IFA_STAT(ibytes)); 432 nbyte_len = max_num_len(nbyte_len, 433 IFA_STAT(obytes)); 434 } 435 } 436 } 437 438 xo_open_list("interface"); 439 if (!pfunc) { 440 xo_emit("{T:/%-*.*s}", ifn_len_max, ifn_len_max, "Name"); 441 xo_emit(" {T:/%5.5s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 442 "{T:/%*.*s} {T:/%*.*s}", 443 "Mtu", net_len, net_len, "Network", addr_len, addr_len, 444 "Address", npkt_len, npkt_len, "Ipkts", 445 nerr_len, nerr_len, "Ierrs", nerr_len, nerr_len, "Idrop"); 446 if (bflag) 447 xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Ibytes"); 448 xo_emit(" {T:/%*.*s} {T:/%*.*s}", npkt_len, npkt_len, "Opkts", 449 nerr_len, nerr_len, "Oerrs"); 450 if (bflag) 451 xo_emit(" {T:/%*.*s}", nbyte_len, nbyte_len, "Obytes"); 452 xo_emit(" {T:/%*s}", nerr_len, "Coll"); 453 if (dflag) 454 xo_emit(" {T:/%*.*s}", nerr_len, nerr_len, "Drop"); 455 xo_emit("\n"); 456 } 457 458 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 459 bool network = false, link = false; 460 char *name, *xname, buf[IFNAMSIZ+1]; 461 462 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 463 continue; 464 465 name = ifa->ifa_name; 466 467 if (pfunc) { 468 469 (*pfunc)(name); 470 471 /* 472 * Skip all ifaddrs belonging to same interface. 473 */ 474 while(ifa->ifa_next != NULL && 475 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 476 ifa = ifa->ifa_next; 477 } 478 continue; 479 } 480 481 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 482 continue; 483 484 xo_open_instance("interface"); 485 486 if ((ifa->ifa_flags & IFF_UP) == 0) { 487 xname = stpcpy(buf, name); 488 *xname++ = '*'; 489 *xname = '\0'; 490 xname = buf; 491 } else 492 xname = name; 493 494 xo_emit("{d:/%-*.*s}{etk:name}{eq:flags/0x%x}", 495 ifn_len_max, ifn_len_max, xname, name, ifa->ifa_flags); 496 497 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 498 show_stat("lu", 6, "mtu", IFA_MTU(ifa), IFA_MTU(ifa), 0); 499 #undef IFA_MTU 500 501 process_ifa_addr(EMIT, ifa, &net_len, &addr_len, 502 &network, &link); 503 504 show_stat("lu", npkt_len, "received-packets", 505 IFA_STAT(ipackets), link|network, 1); 506 show_stat("lu", nerr_len, "received-errors", IFA_STAT(ierrors), 507 link, 1); 508 show_stat("lu", nerr_len, "dropped-packets", IFA_STAT(iqdrops), 509 link, 1); 510 if (bflag) 511 show_stat("lu", nbyte_len, "received-bytes", 512 IFA_STAT(ibytes), link|network, 0); 513 show_stat("lu", npkt_len, "sent-packets", IFA_STAT(opackets), 514 link|network, 1); 515 show_stat("lu", nerr_len, "send-errors", IFA_STAT(oerrors), 516 link, 1); 517 if (bflag) 518 show_stat("lu", nbyte_len, "sent-bytes", 519 IFA_STAT(obytes), link|network, 0); 520 show_stat("NRSlu", nerr_len, "collisions", IFA_STAT(collisions), 521 link, 1); 522 if (dflag) 523 show_stat("LSlu", nerr_len, "dropped-packets", 524 IFA_STAT(oqdrops), link, 1); 525 xo_emit("\n"); 526 527 if (!aflag) { 528 xo_close_instance("interface"); 529 continue; 530 } 531 532 /* 533 * Print family's multicast addresses. 534 */ 535 xo_open_list("multicast-address"); 536 for (ifma = next_ifma(ifmap, ifa->ifa_name, 537 ifa->ifa_addr->sa_family); 538 ifma != NULL; 539 ifma = next_ifma(ifma, ifa->ifa_name, 540 ifa->ifa_addr->sa_family)) { 541 const char *fmt = NULL; 542 543 xo_open_instance("multicast-address"); 544 switch (ifma->ifma_addr->sa_family) { 545 case AF_LINK: 546 { 547 struct sockaddr_dl *sdl; 548 549 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 550 if (sdl->sdl_type != IFT_ETHER && 551 sdl->sdl_type != IFT_FDDI) 552 break; 553 } 554 /* FALLTHROUGH */ 555 case AF_INET: 556 #ifdef INET6 557 case AF_INET6: 558 #endif /* INET6 */ 559 fmt = routename(ifma->ifma_addr, numeric_addr); 560 break; 561 } 562 if (fmt) { 563 if (Wflag) 564 xo_emit("{P:/%27s }" 565 "{t:address/%-17s/}", "", fmt); 566 else 567 xo_emit("{P:/%25s }" 568 "{t:address/%-17.17s/}", "", fmt); 569 if (ifma->ifma_addr->sa_family == AF_LINK) { 570 xo_emit(" {:received-packets/%8lu}", 571 IFA_STAT(imcasts)); 572 xo_emit("{P:/%*s}", bflag? 17 : 6, ""); 573 xo_emit(" {:sent-packets/%8lu}", 574 IFA_STAT(omcasts)); 575 } 576 xo_emit("\n"); 577 } 578 xo_close_instance("multicast-address"); 579 ifma = ifma->ifma_next; 580 } 581 xo_close_list("multicast-address"); 582 xo_close_instance("interface"); 583 } 584 xo_close_list("interface"); 585 586 freeifaddrs(ifap); 587 if (aflag) 588 freeifmaddrs(ifmap); 589 } 590 591 struct iftot { 592 u_long ift_ip; /* input packets */ 593 u_long ift_ie; /* input errors */ 594 u_long ift_id; /* input drops */ 595 u_long ift_op; /* output packets */ 596 u_long ift_oe; /* output errors */ 597 u_long ift_od; /* output drops */ 598 u_long ift_co; /* collisions */ 599 u_long ift_ib; /* input bytes */ 600 u_long ift_ob; /* output bytes */ 601 }; 602 603 /* 604 * Obtain stats for interface(s). 605 */ 606 static void 607 fill_iftot(struct iftot *st) 608 { 609 struct ifaddrs *ifap, *ifa; 610 bool found = false; 611 612 if (getifaddrs(&ifap) != 0) 613 xo_err(EX_OSERR, "getifaddrs"); 614 615 bzero(st, sizeof(*st)); 616 617 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 618 if (ifa->ifa_addr->sa_family != AF_LINK) 619 continue; 620 if (interface) { 621 if (strcmp(ifa->ifa_name, interface) == 0) 622 found = true; 623 else 624 continue; 625 } 626 627 st->ift_ip += IFA_STAT(ipackets); 628 st->ift_ie += IFA_STAT(ierrors); 629 st->ift_id += IFA_STAT(iqdrops); 630 st->ift_ib += IFA_STAT(ibytes); 631 st->ift_op += IFA_STAT(opackets); 632 st->ift_oe += IFA_STAT(oerrors); 633 st->ift_od += IFA_STAT(oqdrops); 634 st->ift_ob += IFA_STAT(obytes); 635 st->ift_co += IFA_STAT(collisions); 636 } 637 638 if (interface && found == false) 639 xo_err(EX_DATAERR, "interface %s not found", interface); 640 641 freeifaddrs(ifap); 642 } 643 644 /* 645 * Set a flag to indicate that a signal from the periodic itimer has been 646 * caught. 647 */ 648 static sig_atomic_t signalled; 649 static void 650 catchalarm(int signo __unused) 651 { 652 signalled = true; 653 } 654 655 /* 656 * Print a running summary of interface statistics. 657 * Repeat display every interval seconds, showing statistics 658 * collected over that interval. Assumes that interval is non-zero. 659 * First line printed at top of screen is always cumulative. 660 */ 661 static void 662 sidewaysintpr(void) 663 { 664 struct iftot ift[2], *new, *old; 665 struct itimerval interval_it; 666 int oldmask, line; 667 668 new = &ift[0]; 669 old = &ift[1]; 670 fill_iftot(old); 671 672 (void)signal(SIGALRM, catchalarm); 673 signalled = false; 674 interval_it.it_interval.tv_sec = interval; 675 interval_it.it_interval.tv_usec = 0; 676 interval_it.it_value = interval_it.it_interval; 677 setitimer(ITIMER_REAL, &interval_it, NULL); 678 xo_open_list("interface-statistics"); 679 680 banner: 681 xo_emit("{T:/%17s} {T:/%14s} {T:/%16s}\n", "input", 682 interface != NULL ? interface : "(Total)", "output"); 683 xo_emit("{T:/%10s} {T:/%5s} {T:/%5s} {T:/%10s} {T:/%10s} {T:/%5s} " 684 "{T:/%10s} {T:/%5s}", 685 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 686 "colls"); 687 if (dflag) 688 xo_emit(" {T:/%5.5s}", "drops"); 689 xo_emit("\n"); 690 xo_flush(); 691 line = 0; 692 693 loop: 694 if ((noutputs != 0) && (--noutputs == 0)) { 695 xo_close_list("interface-statistics"); 696 return; 697 } 698 oldmask = sigblock(sigmask(SIGALRM)); 699 while (!signalled) 700 sigpause(0); 701 signalled = false; 702 sigsetmask(oldmask); 703 line++; 704 705 fill_iftot(new); 706 707 xo_open_instance("stats"); 708 show_stat("lu", 10, "received-packets", 709 new->ift_ip - old->ift_ip, 1, 1); 710 show_stat("lu", 5, "received-errors", 711 new->ift_ie - old->ift_ie, 1, 1); 712 show_stat("lu", 5, "dropped-packets", 713 new->ift_id - old->ift_id, 1, 1); 714 show_stat("lu", 10, "received-bytes", 715 new->ift_ib - old->ift_ib, 1, 0); 716 show_stat("lu", 10, "sent-packets", 717 new->ift_op - old->ift_op, 1, 1); 718 show_stat("lu", 5, "send-errors", 719 new->ift_oe - old->ift_oe, 1, 1); 720 show_stat("lu", 10, "sent-bytes", 721 new->ift_ob - old->ift_ob, 1, 0); 722 show_stat("NRSlu", 5, "collisions", 723 new->ift_co - old->ift_co, 1, 1); 724 if (dflag) 725 show_stat("LSlu", 5, "dropped-packets", 726 new->ift_od - old->ift_od, 1, 1); 727 xo_close_instance("stats"); 728 xo_emit("\n"); 729 xo_flush(); 730 731 if (new == &ift[0]) { 732 new = &ift[1]; 733 old = &ift[0]; 734 } else { 735 new = &ift[0]; 736 old = &ift[1]; 737 } 738 739 if (line == 21) 740 goto banner; 741 else 742 goto loop; 743 744 /* NOTREACHED */ 745 } 746