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 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 void 102 pfsync_acts_stats(const char *fmt, uint64_t *a) 103 { 104 int i; 105 106 for (i = 0; i < PFSYNC_ACT_MAX; i++, a++) 107 if (*a || sflag <= 1) 108 printf(fmt, *a, pfsyncacts[i], plural(*a)); 109 } 110 111 /* 112 * Dump pfsync statistics structure. 113 */ 114 void 115 pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 116 { 117 struct pfsyncstats pfsyncstat, zerostat; 118 size_t len = sizeof(struct pfsyncstats); 119 120 if (live) { 121 if (zflag) 122 memset(&zerostat, 0, len); 123 if (sysctlbyname("net.pfsync.stats", &pfsyncstat, &len, 124 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 125 if (errno != ENOENT) 126 warn("sysctl: net.pfsync.stats"); 127 return; 128 } 129 } else 130 kread(off, &pfsyncstat, len); 131 132 printf("%s:\n", name); 133 134 #define p(f, m) if (pfsyncstat.f || sflag <= 1) \ 135 printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f)) 136 137 p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n"); 138 p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n"); 139 pfsync_acts_stats("\t %ju %s%s received\n", 140 &pfsyncstat.pfsyncs_iacts[0]); 141 p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n"); 142 p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n"); 143 p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n"); 144 p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n"); 145 p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n"); 146 p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n"); 147 p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n"); 148 p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n"); 149 p(pfsyncs_stale, "\t\t%ju stale state%s\n"); 150 p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n"); 151 p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n"); 152 p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n"); 153 pfsync_acts_stats("\t %ju %s%s sent\n", 154 &pfsyncstat.pfsyncs_oacts[0]); 155 p(pfsyncs_onomem, "\t\t%ju failure%s due to mbuf memory error\n"); 156 p(pfsyncs_oerrors, "\t\t%ju send error%s\n"); 157 #undef p 158 } 159 #endif /* PF */ 160 161 /* 162 * Display a formatted value, or a '-' in the same space. 163 */ 164 static void 165 show_stat(const char *fmt, int width, u_long value, short showvalue) 166 { 167 const char *lsep, *rsep; 168 char newfmt[32]; 169 170 lsep = ""; 171 if (strncmp(fmt, "LS", 2) == 0) { 172 lsep = " "; 173 fmt += 2; 174 } 175 rsep = " "; 176 if (strncmp(fmt, "NRS", 3) == 0) { 177 rsep = ""; 178 fmt += 3; 179 } 180 if (showvalue == 0) { 181 /* Print just dash. */ 182 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 183 printf(newfmt, "-"); 184 return; 185 } 186 187 if (hflag) { 188 char buf[5]; 189 190 /* Format in human readable form. */ 191 humanize_number(buf, sizeof(buf), (int64_t)value, "", 192 HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); 193 sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep); 194 printf(newfmt, buf); 195 } else { 196 /* Construct the format string. */ 197 sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep); 198 printf(newfmt, value); 199 } 200 } 201 202 /* 203 * Find next multiaddr for a given interface name. 204 */ 205 static struct ifmaddrs * 206 next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family) 207 { 208 209 for(; ifma != NULL; ifma = ifma->ifma_next) { 210 struct sockaddr_dl *sdl; 211 212 sdl = (struct sockaddr_dl *)ifma->ifma_name; 213 if (ifma->ifma_addr->sa_family == family && 214 strcmp(sdl->sdl_data, name) == 0) 215 break; 216 } 217 218 return (ifma); 219 } 220 221 /* 222 * Print a description of the network interfaces. 223 */ 224 void 225 intpr(int interval, void (*pfunc)(char *), int af) 226 { 227 struct ifaddrs *ifap, *ifa; 228 struct ifmaddrs *ifmap, *ifma; 229 230 if (interval) 231 return sidewaysintpr(interval); 232 233 if (getifaddrs(&ifap) != 0) 234 err(EX_OSERR, "getifaddrs"); 235 if (aflag && getifmaddrs(&ifmap) != 0) 236 err(EX_OSERR, "getifmaddrs"); 237 238 if (!pfunc) { 239 if (Wflag) 240 printf("%-7.7s", "Name"); 241 else 242 printf("%-5.5s", "Name"); 243 printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s", 244 "Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop"); 245 if (bflag) 246 printf(" %10.10s","Ibytes"); 247 printf(" %8.8s %5.5s", "Opkts", "Oerrs"); 248 if (bflag) 249 printf(" %10.10s","Obytes"); 250 printf(" %5s", "Coll"); 251 if (dflag) 252 printf(" %s", "Drop"); 253 putchar('\n'); 254 } 255 256 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 257 bool network = false, link = false; 258 259 if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0) 260 continue; 261 262 if (pfunc) { 263 char *name; 264 265 name = ifa->ifa_name; 266 (*pfunc)(name); 267 268 /* 269 * Skip all ifaddrs belonging to same interface. 270 */ 271 while(ifa->ifa_next != NULL && 272 (strcmp(ifa->ifa_next->ifa_name, name) == 0)) { 273 ifa = ifa->ifa_next; 274 } 275 continue; 276 } 277 278 if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af) 279 continue; 280 281 if (Wflag) 282 printf("%-7.7s", ifa->ifa_name); 283 else 284 printf("%-5.5s", ifa->ifa_name); 285 286 #define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu) 287 show_stat("lu", 6, IFA_MTU(ifa), IFA_MTU(ifa)); 288 #undef IFA_MTU 289 290 switch (ifa->ifa_addr->sa_family) { 291 case AF_UNSPEC: 292 printf("%-13.13s ", "none"); 293 printf("%-15.15s ", "none"); 294 break; 295 case AF_INET: 296 { 297 struct sockaddr_in *sin, *mask; 298 299 sin = (struct sockaddr_in *)ifa->ifa_addr; 300 mask = (struct sockaddr_in *)ifa->ifa_netmask; 301 printf("%-13.13s ", netname(sin->sin_addr.s_addr, 302 mask->sin_addr.s_addr)); 303 printf("%-17.17s ", 304 routename(sin->sin_addr.s_addr)); 305 306 network = true; 307 break; 308 } 309 #ifdef INET6 310 case AF_INET6: 311 { 312 struct sockaddr_in6 *sin6, *mask; 313 314 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 315 mask = (struct sockaddr_in6 *)ifa->ifa_netmask; 316 317 printf("%-13.13s ", netname6(sin6, &mask->sin6_addr)); 318 getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len, 319 addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 320 printf("%-17.17s ", addr_buf); 321 322 network = 1; 323 break; 324 } 325 #endif /* INET6 */ 326 case AF_LINK: 327 { 328 struct sockaddr_dl *sdl; 329 char *cp, linknum[10]; 330 int n, m; 331 332 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 333 cp = (char *)LLADDR(sdl); 334 n = sdl->sdl_alen; 335 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 336 m = printf("%-13.13s ", linknum); 337 338 while ((--n >= 0) && (m < 30)) 339 m += printf("%02x%c", *cp++ & 0xff, 340 n > 0 ? ':' : ' '); 341 m = 32 - m; 342 while (m-- > 0) 343 putchar(' '); 344 345 link = 1; 346 break; 347 } 348 } 349 350 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 351 show_stat("lu", 8, IFA_STAT(ipackets), link|network); 352 show_stat("lu", 5, IFA_STAT(ierrors), link); 353 show_stat("lu", 5, IFA_STAT(iqdrops), link); 354 if (bflag) 355 show_stat("lu", 10, IFA_STAT(ibytes), link|network); 356 show_stat("lu", 8, IFA_STAT(opackets), link|network); 357 show_stat("lu", 5, IFA_STAT(oerrors), link); 358 if (bflag) 359 show_stat("lu", 10, IFA_STAT(obytes), link|network); 360 show_stat("NRSlu", 5, IFA_STAT(collisions), link); 361 if (dflag) 362 show_stat("LSlu", 5, IFA_STAT(oqdrops), link); 363 putchar('\n'); 364 365 if (!aflag) 366 continue; 367 368 /* 369 * Print family's multicast addresses. 370 */ 371 for (ifma = next_ifma(ifmap, ifa->ifa_name, 372 ifa->ifa_addr->sa_family); 373 ifma != NULL; 374 ifma = next_ifma(ifma, ifa->ifa_name, 375 ifa->ifa_addr->sa_family)) { 376 const char *fmt = NULL; 377 378 switch (ifma->ifma_addr->sa_family) { 379 case AF_INET: 380 { 381 struct sockaddr_in *sin; 382 383 sin = (struct sockaddr_in *)ifma->ifma_addr; 384 fmt = routename(sin->sin_addr.s_addr); 385 break; 386 } 387 #ifdef INET6 388 case AF_INET6: 389 390 /* in6_fillscopeid(&msa.in6); */ 391 getnameinfo(ifma->ifma_addr, 392 ifma->ifma_addr->sa_len, addr_buf, 393 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 394 printf("%*s %s\n", 395 Wflag ? 27 : 25, "", addr_buf); 396 break; 397 #endif /* INET6 */ 398 case AF_LINK: 399 { 400 struct sockaddr_dl *sdl; 401 402 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 403 switch (sdl->sdl_type) { 404 case IFT_ETHER: 405 case IFT_FDDI: 406 fmt = ether_ntoa( 407 (struct ether_addr *)LLADDR(sdl)); 408 break; 409 } 410 break; 411 } 412 } 413 414 if (fmt) { 415 printf("%*s %-17.17s", 416 Wflag ? 27 : 25, "", fmt); 417 if (ifma->ifma_addr->sa_family == AF_LINK) { 418 printf(" %8ju", 419 (uintmax_t )IFA_STAT(imcasts)); 420 printf("%*s", bflag ? 17 : 6, ""); 421 printf(" %8ju", 422 (uintmax_t )IFA_STAT(omcasts)); 423 } 424 putchar('\n'); 425 } 426 427 ifma = ifma->ifma_next; 428 } 429 } 430 431 freeifaddrs(ifap); 432 if (aflag) 433 freeifmaddrs(ifmap); 434 } 435 436 struct iftot { 437 u_long ift_ip; /* input packets */ 438 u_long ift_ie; /* input errors */ 439 u_long ift_id; /* input drops */ 440 u_long ift_op; /* output packets */ 441 u_long ift_oe; /* output errors */ 442 u_long ift_od; /* output drops */ 443 u_long ift_co; /* collisions */ 444 u_long ift_ib; /* input bytes */ 445 u_long ift_ob; /* output bytes */ 446 }; 447 448 /* 449 * Obtain stats for interface(s). 450 */ 451 static void 452 fill_iftot(struct iftot *st) 453 { 454 struct ifaddrs *ifap, *ifa; 455 bool found = false; 456 457 if (getifaddrs(&ifap) != 0) 458 err(EX_OSERR, "getifaddrs"); 459 460 bzero(st, sizeof(*st)); 461 462 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 463 if (ifa->ifa_addr->sa_family != AF_LINK) 464 continue; 465 if (interface) { 466 if (strcmp(ifa->ifa_name, interface) == 0) 467 found = true; 468 else 469 continue; 470 } 471 472 st->ift_ip += IFA_STAT(ipackets); 473 st->ift_ie += IFA_STAT(ierrors); 474 st->ift_id += IFA_STAT(iqdrops); 475 st->ift_ib += IFA_STAT(ibytes); 476 st->ift_op += IFA_STAT(opackets); 477 st->ift_oe += IFA_STAT(oerrors); 478 st->ift_od += IFA_STAT(oqdrops); 479 st->ift_ob += IFA_STAT(obytes); 480 st->ift_co += IFA_STAT(collisions); 481 } 482 483 if (interface && found == false) 484 err(EX_DATAERR, "interface %s not found", interface); 485 486 freeifaddrs(ifap); 487 } 488 489 /* 490 * Set a flag to indicate that a signal from the periodic itimer has been 491 * caught. 492 */ 493 static sig_atomic_t signalled; 494 static void 495 catchalarm(int signo __unused) 496 { 497 signalled = true; 498 } 499 500 /* 501 * Print a running summary of interface statistics. 502 * Repeat display every interval seconds, showing statistics 503 * collected over that interval. Assumes that interval is non-zero. 504 * First line printed at top of screen is always cumulative. 505 */ 506 static void 507 sidewaysintpr(int interval) 508 { 509 struct iftot ift[2], *new, *old; 510 struct itimerval interval_it; 511 int oldmask, line; 512 513 new = &ift[0]; 514 old = &ift[1]; 515 fill_iftot(old); 516 517 (void)signal(SIGALRM, catchalarm); 518 signalled = false; 519 interval_it.it_interval.tv_sec = interval; 520 interval_it.it_interval.tv_usec = 0; 521 interval_it.it_value = interval_it.it_interval; 522 setitimer(ITIMER_REAL, &interval_it, NULL); 523 524 banner: 525 printf("%17s %14s %16s", "input", 526 interface != NULL ? interface : "(Total)", "output"); 527 putchar('\n'); 528 printf("%10s %5s %5s %10s %10s %5s %10s %5s", 529 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 530 "colls"); 531 if (dflag) 532 printf(" %5.5s", "drops"); 533 putchar('\n'); 534 fflush(stdout); 535 line = 0; 536 537 loop: 538 if ((noutputs != 0) && (--noutputs == 0)) 539 exit(0); 540 oldmask = sigblock(sigmask(SIGALRM)); 541 while (!signalled) 542 sigpause(0); 543 signalled = false; 544 sigsetmask(oldmask); 545 line++; 546 547 fill_iftot(new); 548 549 show_stat("lu", 10, new->ift_ip - old->ift_ip, 1); 550 show_stat("lu", 5, new->ift_ie - old->ift_ie, 1); 551 show_stat("lu", 5, new->ift_id - old->ift_id, 1); 552 show_stat("lu", 10, new->ift_ib - old->ift_ib, 1); 553 show_stat("lu", 10, new->ift_op - old->ift_op, 1); 554 show_stat("lu", 5, new->ift_oe - old->ift_oe, 1); 555 show_stat("lu", 10, new->ift_ob - old->ift_ob, 1); 556 show_stat("NRSlu", 5, new->ift_co - old->ift_co, 1); 557 if (dflag) 558 show_stat("LSlu", 5, new->ift_od - old->ift_od, 1); 559 putchar('\n'); 560 fflush(stdout); 561 562 if (new == &ift[0]) { 563 new = &ift[1]; 564 old = &ift[0]; 565 } else { 566 new = &ift[0]; 567 old = &ift[1]; 568 } 569 570 if (line == 21) 571 goto banner; 572 else 573 goto loop; 574 575 /* NOTREACHED */ 576 } 577