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_APPLETALK: 327 printf("atalk:%-12.12s ", 328 atalk_print(ifa->ifa_addr, 0x10)); 329 printf("%-11.11s ", 330 atalk_print(ifa->ifa_addr, 0x0b)); 331 break; 332 case AF_LINK: 333 { 334 struct sockaddr_dl *sdl; 335 char *cp, linknum[10]; 336 int n, m; 337 338 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 339 cp = (char *)LLADDR(sdl); 340 n = sdl->sdl_alen; 341 sprintf(linknum, "<Link#%d>", sdl->sdl_index); 342 m = printf("%-13.13s ", linknum); 343 344 while ((--n >= 0) && (m < 30)) 345 m += printf("%02x%c", *cp++ & 0xff, 346 n > 0 ? ':' : ' '); 347 m = 32 - m; 348 while (m-- > 0) 349 putchar(' '); 350 351 link = 1; 352 break; 353 } 354 } 355 356 #define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s) 357 show_stat("lu", 8, IFA_STAT(ipackets), link|network); 358 show_stat("lu", 5, IFA_STAT(ierrors), link); 359 show_stat("lu", 5, IFA_STAT(iqdrops), link); 360 if (bflag) 361 show_stat("lu", 10, IFA_STAT(ibytes), link|network); 362 show_stat("lu", 8, IFA_STAT(opackets), link|network); 363 show_stat("lu", 5, IFA_STAT(oerrors), link); 364 if (bflag) 365 show_stat("lu", 10, IFA_STAT(obytes), link|network); 366 show_stat("NRSlu", 5, IFA_STAT(collisions), link); 367 /* XXXGL: output queue drops */ 368 putchar('\n'); 369 370 if (!aflag) 371 continue; 372 373 /* 374 * Print family's multicast addresses. 375 */ 376 for (ifma = next_ifma(ifmap, ifa->ifa_name, 377 ifa->ifa_addr->sa_family); 378 ifma != NULL; 379 ifma = next_ifma(ifma, ifa->ifa_name, 380 ifa->ifa_addr->sa_family)) { 381 const char *fmt = NULL; 382 383 switch (ifma->ifma_addr->sa_family) { 384 case AF_INET: 385 { 386 struct sockaddr_in *sin; 387 388 sin = (struct sockaddr_in *)ifma->ifma_addr; 389 fmt = routename(sin->sin_addr.s_addr); 390 break; 391 } 392 #ifdef INET6 393 case AF_INET6: 394 395 /* in6_fillscopeid(&msa.in6); */ 396 getnameinfo(ifma->ifma_addr, 397 ifma->ifma_addr->sa_len, addr_buf, 398 sizeof(addr_buf), 0, 0, NI_NUMERICHOST); 399 printf("%*s %s\n", 400 Wflag ? 27 : 25, "", addr_buf); 401 break; 402 #endif /* INET6 */ 403 case AF_LINK: 404 { 405 struct sockaddr_dl *sdl; 406 407 sdl = (struct sockaddr_dl *)ifma->ifma_addr; 408 switch (sdl->sdl_type) { 409 case IFT_ETHER: 410 case IFT_FDDI: 411 fmt = ether_ntoa( 412 (struct ether_addr *)LLADDR(sdl)); 413 break; 414 } 415 break; 416 } 417 } 418 419 if (fmt) { 420 printf("%*s %-17.17s", 421 Wflag ? 27 : 25, "", fmt); 422 if (ifma->ifma_addr->sa_family == AF_LINK) { 423 printf(" %8ju", 424 (uintmax_t )IFA_STAT(imcasts)); 425 printf("%*s", bflag ? 17 : 6, ""); 426 printf(" %8ju", 427 (uintmax_t )IFA_STAT(omcasts)); 428 } 429 putchar('\n'); 430 } 431 432 ifma = ifma->ifma_next; 433 } 434 } 435 436 freeifaddrs(ifap); 437 if (aflag) 438 freeifmaddrs(ifmap); 439 } 440 441 struct iftot { 442 u_long ift_ip; /* input packets */ 443 u_long ift_ie; /* input errors */ 444 u_long ift_id; /* input drops */ 445 u_long ift_op; /* output packets */ 446 u_long ift_oe; /* output errors */ 447 u_long ift_co; /* collisions */ 448 u_long ift_ib; /* input bytes */ 449 u_long ift_ob; /* output bytes */ 450 }; 451 452 /* 453 * Obtain stats for interface(s). 454 */ 455 static void 456 fill_iftot(struct iftot *st) 457 { 458 struct ifaddrs *ifap, *ifa; 459 bool found = false; 460 461 if (getifaddrs(&ifap) != 0) 462 err(EX_OSERR, "getifaddrs"); 463 464 bzero(st, sizeof(*st)); 465 466 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 467 if (ifa->ifa_addr->sa_family != AF_LINK) 468 continue; 469 if (interface) { 470 if (strcmp(ifa->ifa_name, interface) == 0) 471 found = true; 472 else 473 continue; 474 } 475 476 st->ift_ip += IFA_STAT(ipackets); 477 st->ift_ie += IFA_STAT(ierrors); 478 st->ift_id += IFA_STAT(iqdrops); 479 st->ift_ib += IFA_STAT(ibytes); 480 st->ift_op += IFA_STAT(opackets); 481 st->ift_oe += IFA_STAT(oerrors); 482 st->ift_ob += IFA_STAT(obytes); 483 st->ift_co += IFA_STAT(collisions); 484 } 485 486 if (interface && found == false) 487 err(EX_DATAERR, "interface %s not found", interface); 488 489 freeifaddrs(ifap); 490 } 491 492 /* 493 * Set a flag to indicate that a signal from the periodic itimer has been 494 * caught. 495 */ 496 static sig_atomic_t signalled; 497 static void 498 catchalarm(int signo __unused) 499 { 500 signalled = true; 501 } 502 503 /* 504 * Print a running summary of interface statistics. 505 * Repeat display every interval seconds, showing statistics 506 * collected over that interval. Assumes that interval is non-zero. 507 * First line printed at top of screen is always cumulative. 508 */ 509 static void 510 sidewaysintpr(int interval) 511 { 512 struct iftot ift[2], *new, *old; 513 struct itimerval interval_it; 514 int oldmask, line; 515 516 new = &ift[0]; 517 old = &ift[1]; 518 fill_iftot(old); 519 520 (void)signal(SIGALRM, catchalarm); 521 signalled = false; 522 interval_it.it_interval.tv_sec = interval; 523 interval_it.it_interval.tv_usec = 0; 524 interval_it.it_value = interval_it.it_interval; 525 setitimer(ITIMER_REAL, &interval_it, NULL); 526 527 banner: 528 printf("%17s %14s %16s", "input", 529 interface != NULL ? interface : "(Total)", "output"); 530 putchar('\n'); 531 printf("%10s %5s %5s %10s %10s %5s %10s %5s", 532 "packets", "errs", "idrops", "bytes", "packets", "errs", "bytes", 533 "colls"); 534 if (dflag) 535 printf(" %5.5s", "drops"); 536 putchar('\n'); 537 fflush(stdout); 538 line = 0; 539 540 loop: 541 if ((noutputs != 0) && (--noutputs == 0)) 542 exit(0); 543 oldmask = sigblock(sigmask(SIGALRM)); 544 while (!signalled) 545 sigpause(0); 546 signalled = false; 547 sigsetmask(oldmask); 548 line++; 549 550 fill_iftot(new); 551 552 show_stat("lu", 10, new->ift_ip - old->ift_ip, 1); 553 show_stat("lu", 5, new->ift_ie - old->ift_ie, 1); 554 show_stat("lu", 5, new->ift_id - old->ift_id, 1); 555 show_stat("lu", 10, new->ift_ib - old->ift_ib, 1); 556 show_stat("lu", 10, new->ift_op - old->ift_op, 1); 557 show_stat("lu", 5, new->ift_oe - old->ift_oe, 1); 558 show_stat("lu", 10, new->ift_ob - old->ift_ob, 1); 559 show_stat("NRSlu", 5, new->ift_co - old->ift_co, 1); 560 /* XXXGL: output queue drops */ 561 putchar('\n'); 562 fflush(stdout); 563 564 if (new == &ift[0]) { 565 new = &ift[1]; 566 old = &ift[0]; 567 } else { 568 new = &ift[0]; 569 old = &ift[1]; 570 } 571 572 if (line == 21) 573 goto banner; 574 else 575 goto loop; 576 577 /* NOTREACHED */ 578 } 579