1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1983, 1988, 1993 Regents of the University of California. All rights reserved. 30 * @(#)main.c 8.4 (Berkeley) 3/1/94 31 * $FreeBSD: src/usr.bin/netstat/main.c,v 1.34.2.12 2001/09/17 15:17:46 ru Exp $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/file.h> 36 #include <sys/protosw.h> 37 #include <sys/socket.h> 38 39 #include <netinet/in.h> 40 41 #include <netgraph/socket/ng_socket.h> 42 43 #include <ctype.h> 44 #include <err.h> 45 #include <errno.h> 46 #include <kvm.h> 47 #include <limits.h> 48 #include <netdb.h> 49 #include <nlist.h> 50 #include <paths.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 #include "netstat.h" 56 57 static struct nlist nl[] = { 58 #define N_IFNET 0 59 { .n_name = "_ifnet" }, 60 #define N_IMP 1 61 { .n_name = "_imp_softc" }, 62 #define N_RTSTAT 2 63 { .n_name = "_rtstat" }, 64 #define N_UNIXSW 3 65 { .n_name = "_localsw" }, 66 #define N_IDP 4 67 { .n_name = "_nspcb"}, 68 #define N_IDPSTAT 5 69 { .n_name = "_idpstat"}, 70 #define N_SPPSTAT 6 71 { .n_name = "_spp_istat"}, 72 #define N_NSERR 7 73 { .n_name = "_ns_errstat"}, 74 #define N_CLNPSTAT 8 75 { .n_name = "_clnp_stat"}, 76 #define IN_NOTUSED 9 77 { .n_name = "_tp_inpcb" }, 78 #define ISO_TP 10 79 { .n_name = "_tp_refinfo" }, 80 #define N_TPSTAT 11 81 { .n_name = "_tp_stat" }, 82 #define N_ESISSTAT 12 83 { .n_name = "_esis_stat"}, 84 #define N_NIMP 13 85 { .n_name = "_nimp"}, 86 #define N_RTREE 14 87 { .n_name = "_rt_tables"}, 88 #define N_CLTP 15 89 { .n_name = "_cltb"}, 90 #define N_CLTPSTAT 16 91 { .n_name = "_cltpstat"}, 92 #define N_NFILE 17 93 { .n_name = "_nfile" }, 94 #define N_FILE 18 95 { .n_name = "_file" }, 96 #define N_MRTSTAT 19 97 { .n_name = "_mrtstat" }, 98 #define N_MFCTABLE 20 99 { .n_name = "_mfctable" }, 100 #define N_VIFTABLE 21 101 { .n_name = "_viftable" }, 102 #define N_NGSOCKS 22 103 { .n_name = "_ngsocklist"}, 104 #define N_IP6STAT 23 105 { .n_name = "_ip6stat" }, 106 #define N_ICMP6STAT 24 107 { .n_name = "_icmp6stat" }, 108 #define N_IPSECSTAT 25 109 { .n_name = "_ipsecstat" }, 110 #define N_IPSEC6STAT 26 111 { .n_name = "_ipsec6stat" }, 112 #define N_PIM6STAT 27 113 { .n_name = "_pim6stat" }, 114 #define N_MRT6PROTO 28 115 { .n_name = "_ip6_mrtproto" }, 116 #define N_MRT6STAT 29 117 { .n_name = "_mrt6stat" }, 118 #define N_MF6CTABLE 30 119 { .n_name = "_mf6ctable" }, 120 #define N_MIF6TABLE 31 121 { .n_name = "_mif6table" }, 122 #define N_PFKEYSTAT 32 123 { .n_name = "_pfkeystat" }, 124 #define N_MBSTAT 33 125 { .n_name = "_mbstat" }, 126 #define N_MBTYPES 34 127 { .n_name = "_mbtypes" }, 128 #define N_NMBCLUSTERS 35 129 { .n_name = "_nmbclusters" }, 130 #define N_NMBUFS 36 131 { .n_name = "_nmbufs" }, 132 #define N_RTTRASH 37 133 { .n_name = "_rttrash" }, 134 #define N_NCPUS 38 135 { .n_name = "_ncpus" }, 136 #define N_CARPSTAT 39 137 { .n_name = "_carpstats" }, 138 #define N_NMBJCLUSTERS 40 139 { .n_name = "_nmbjclusters" }, 140 { .n_name = NULL }, 141 }; 142 143 struct protox { 144 u_char pr_index; /* index into nlist of cb head */ 145 u_char pr_sindex; /* index into nlist of stat block */ 146 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 147 void (*pr_cblocks)(u_long, const char *, int); 148 /* control blocks printing routine */ 149 void (*pr_stats)(u_long, const char *, int); 150 /* statistics printing routine */ 151 void (*pr_istats)(char *); /* per/if statistics printing routine */ 152 const char *pr_name; /* well-known name */ 153 u_int pr_usesysctl; /* true if we use sysctl, not kvm */ 154 } protox[] = { 155 { -1, -1, 1, protopr, 156 tcp_stats, NULL, "tcp", IPPROTO_TCP }, 157 { -1, -1, 1, protopr, 158 udp_stats, NULL, "udp", IPPROTO_UDP }, 159 { -1, -1, 1, protopr, 160 NULL, NULL, "divert",IPPROTO_DIVERT }, 161 { -1, -1, 1, protopr, 162 ip_stats, NULL, "ip", IPPROTO_RAW }, 163 { -1, -1, 1, protopr, 164 icmp_stats, NULL, "icmp", IPPROTO_ICMP }, 165 { -1, -1, 1, protopr, 166 igmp_stats, NULL, "igmp", IPPROTO_IGMP }, 167 #ifdef IPSEC 168 { -1, N_IPSECSTAT, 1, 0, 169 ipsec_stats, NULL, "ipsec", 0}, 170 #endif 171 { -1, N_CARPSTAT, 1, 0, 172 carp_stats, NULL, "carp", 0}, 173 { -1, -1, 0, 0, 174 0, NULL, NULL, 0} 175 }; 176 177 #ifdef INET6 178 struct protox ip6protox[] = { 179 { -1, -1, 1, protopr, 180 tcp_stats, NULL, "tcp", IPPROTO_TCP }, 181 { -1, -1, 1, protopr, 182 udp_stats, NULL, "udp", IPPROTO_UDP }, 183 { -1, N_IP6STAT, 1, protopr, 184 ip6_stats, ip6_ifstats, "ip6", IPPROTO_RAW }, 185 { -1, N_ICMP6STAT, 1, protopr, 186 icmp6_stats, icmp6_ifstats, "icmp6",IPPROTO_ICMPV6 }, 187 #ifdef IPSEC 188 { -1, N_IPSEC6STAT, 1, 0, 189 ipsec_stats, NULL, "ipsec6",0 }, 190 #endif 191 #ifdef notyet 192 { -1, N_PIM6STAT, 1, 0, 193 pim6_stats, NULL, "pim6", 0 }, 194 #endif 195 { -1, -1, 1, 0, 196 rip6_stats, NULL, "rip6", 0 }, 197 { -1, -1, 1, protopr, 198 pim_stats, NULL, "pim", IPPROTO_PIM }, 199 { -1, -1, 0, 0, 200 0, NULL, 0, 0 } 201 }; 202 #endif /*INET6*/ 203 204 #ifdef IPSEC 205 struct protox pfkeyprotox[] = { 206 { -1, N_PFKEYSTAT, 1, 0, 207 pfkey_stats, NULL, "pfkey", 0 }, 208 { -1, -1, 0, 0, 209 0, NULL, 0, 0 } 210 }; 211 #endif 212 213 struct protox netgraphprotox[] = { 214 { N_NGSOCKS, -1, 1, netgraphprotopr, 215 NULL, NULL, "ctrl", 0 }, 216 { N_NGSOCKS, -1, 1, netgraphprotopr, 217 NULL, NULL, "data", 0 }, 218 { -1, -1, 0, 0, 219 0, NULL, NULL, 0 } 220 }; 221 222 #ifdef ISO 223 struct protox isoprotox[] = { 224 { ISO_TP, N_TPSTAT, 1, iso_protopr, 225 tp_stats, NULL, "tp" }, 226 { N_CLTP, N_CLTPSTAT, 1, iso_protopr, 227 cltp_stats, NULL, "cltp" }, 228 { -1, N_CLNPSTAT, 1, 0, 229 clnp_stats, NULL, "clnp"}, 230 { -1, N_ESISSTAT, 1, 0, 231 esis_stats, NULL, "esis"}, 232 { -1, -1, 0, 0, 233 0, NULL, 0 } 234 }; 235 #endif 236 237 struct protox *protoprotox[] = { 238 protox, 239 #ifdef INET6 240 ip6protox, 241 #endif 242 #ifdef IPSEC 243 pfkeyprotox, 244 #endif 245 #ifdef ISO 246 isoprotox, 247 #endif 248 NULL }; 249 250 static void printproto (struct protox *, const char *, u_long); 251 static void usage (void); 252 static struct protox *name2protox (char *); 253 static struct protox *knownname (char *); 254 255 static kvm_t *kvmd; 256 static char *nlistf = NULL, *memf = NULL; 257 258 int Aflag; /* show addresses of protocol control block */ 259 int aflag; /* show all sockets (including servers) */ 260 int bflag; /* show i/f total bytes in/out */ 261 int cpuflag = -1; /* dump route table from specific cpu */ 262 int dflag; /* show i/f dropped packets */ 263 int gflag; /* show group (multicast) routing or stats */ 264 int iflag; /* show interfaces */ 265 int Lflag; /* show size of listen queues */ 266 int mflag; /* show memory stats */ 267 int Pflag; /* show more protocol info (go past 80 columns) */ 268 int numeric_addr; /* show addresses numerically */ 269 int numeric_port; /* show ports numerically */ 270 static int pflag; /* show given protocol */ 271 int rflag; /* show routing tables (or routing stats) */ 272 int sflag; /* show protocol statistics */ 273 int tflag; /* show i/f watchdog timers */ 274 int Bflag; /* show buffer limit instead of buffer use */ 275 int Wflag; /* wide display */ 276 int zflag; /* zero stats */ 277 278 int interval; /* repeat interval for i/f stats */ 279 280 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 281 int unit; /* unit number for above */ 282 283 int af; /* address family */ 284 285 int 286 main(int argc, char **argv) 287 { 288 struct protox *tp = NULL; /* for printing cblocks & stats */ 289 int ch; 290 int n; 291 292 af = AF_UNSPEC; 293 294 while ((ch = getopt(argc, argv, "Aabc:df:gI:iLlM:mN:nPp:rSsBtuWw:z")) != -1) 295 switch(ch) { 296 case 'A': 297 Aflag = 1; 298 break; 299 case 'a': 300 aflag = 1; 301 break; 302 case 'b': 303 bflag = 1; 304 break; 305 case 'c': 306 kread(0, 0, 0); 307 kread(nl[N_NCPUS].n_value, (char *)&n, sizeof(n)); 308 cpuflag = strtol(optarg, NULL, 0); 309 if (cpuflag < 0 || cpuflag >= n) 310 errx(1, "cpu %d does not exist", cpuflag); 311 break; 312 case 'd': 313 dflag = 1; 314 break; 315 case 'f': 316 if (strcmp(optarg, "inet") == 0) 317 af = AF_INET; 318 #ifdef INET6 319 else if (strcmp(optarg, "inet6") == 0) 320 af = AF_INET6; 321 #endif /*INET6*/ 322 #ifdef INET6 323 else if (strcmp(optarg, "pfkey") == 0) 324 af = PF_KEY; 325 #endif /*INET6*/ 326 else if (strcmp(optarg, "unix") == 0) 327 af = AF_UNIX; 328 else if (strcmp(optarg, "ng") == 0 329 || strcmp(optarg, "netgraph") == 0) 330 af = AF_NETGRAPH; 331 #ifdef ISO 332 else if (strcmp(optarg, "iso") == 0) 333 af = AF_ISO; 334 #endif 335 else if (strcmp(optarg, "link") == 0) 336 af = AF_LINK; 337 else if (strcmp(optarg, "mpls") == 0) 338 af = AF_MPLS; 339 else { 340 errx(1, "%s: unknown address family", optarg); 341 } 342 break; 343 case 'g': 344 gflag = 1; 345 break; 346 case 'I': { 347 char *cp; 348 349 iflag = 1; 350 for (cp = interface = optarg; isalpha(*cp); cp++) 351 continue; 352 unit = atoi(cp); 353 break; 354 } 355 case 'i': 356 iflag = 1; 357 break; 358 case 'L': 359 Lflag = 1; 360 break; 361 case 'M': 362 memf = optarg; 363 break; 364 case 'm': 365 mflag = 1; 366 break; 367 case 'N': 368 nlistf = optarg; 369 break; 370 case 'n': 371 numeric_addr = numeric_port = 1; 372 break; 373 case 'P': 374 Pflag = 1; 375 break; 376 case 'p': 377 if ((tp = name2protox(optarg)) == NULL) { 378 errx(1, 379 "%s: unknown or uninstrumented protocol", 380 optarg); 381 } 382 pflag = 1; 383 break; 384 case 'r': 385 rflag = 1; 386 break; 387 case 's': 388 ++sflag; 389 break; 390 case 'S': 391 numeric_addr = 1; 392 break; 393 case 'B': 394 Bflag = 1; 395 break; 396 case 't': 397 tflag = 1; 398 break; 399 case 'u': 400 af = AF_UNIX; 401 break; 402 case 'W': 403 case 'l': 404 Wflag = 1; 405 break; 406 case 'w': 407 interval = atoi(optarg); 408 iflag = 1; 409 break; 410 case 'z': 411 zflag = 1; 412 break; 413 case '?': 414 default: 415 usage(); 416 } 417 argv += optind; 418 argc -= optind; 419 420 #define BACKWARD_COMPATIBILITY 421 #ifdef BACKWARD_COMPATIBILITY 422 if (*argv) { 423 if (isdigit(**argv)) { 424 interval = atoi(*argv); 425 if (interval <= 0) 426 usage(); 427 ++argv; 428 iflag = 1; 429 } 430 if (*argv) { 431 nlistf = *argv; 432 if (*++argv) 433 memf = *argv; 434 } 435 } 436 #endif 437 438 /* 439 * Discard setgid privileges if not the running kernel so that bad 440 * guys can't print interesting stuff from kernel memory. 441 */ 442 if (nlistf != NULL || memf != NULL) 443 setgid(getgid()); 444 445 if (mflag) { 446 if (memf != NULL) { 447 if (kread(0, 0, 0) == 0) 448 mbpr(nl[N_MBSTAT].n_value, 449 nl[N_MBTYPES].n_value, 450 nl[N_NMBCLUSTERS].n_value, 451 nl[N_NMBJCLUSTERS].n_value, 452 nl[N_NMBUFS].n_value, 453 nl[N_NCPUS].n_value); 454 } else { 455 mbpr(0, 0, 0, 0, 0, 0); 456 } 457 exit(0); 458 } 459 #if 0 460 /* 461 * Keep file descriptors open to avoid overhead 462 * of open/close on each call to get* routines. 463 */ 464 sethostent(1); 465 setnetent(1); 466 #else 467 /* 468 * This does not make sense any more with DNS being default over 469 * the files. Doing a setXXXXent(1) causes a tcp connection to be 470 * used for the queries, which is slower. 471 */ 472 #endif 473 if (iflag && !sflag) { 474 kread(0, 0, 0); 475 intpr(interval, nl[N_IFNET].n_value, NULL, nl[N_NCPUS].n_value); 476 exit(0); 477 } 478 if (rflag) { 479 kread(0, 0, 0); 480 if (sflag) 481 rt_stats(); 482 else 483 routepr(nl[N_RTREE].n_value); 484 exit(0); 485 } 486 if (gflag) { 487 kread(0, 0, 0); 488 if (sflag) { 489 if (af == AF_INET || af == AF_UNSPEC) 490 mrt_stats(nl[N_MRTSTAT].n_value); 491 #ifdef INET6 492 if (af == AF_INET6 || af == AF_UNSPEC) 493 mrt6_stats(nl[N_MRT6STAT].n_value); 494 #endif 495 } else { 496 if (af == AF_INET || af == AF_UNSPEC) 497 mroutepr(nl[N_MFCTABLE].n_value, 498 nl[N_VIFTABLE].n_value); 499 #ifdef INET6 500 if (af == AF_INET6 || af == AF_UNSPEC) 501 mroute6pr(nl[N_MF6CTABLE].n_value, 502 nl[N_MIF6TABLE].n_value); 503 #endif 504 } 505 exit(0); 506 } 507 508 kread(0, 0, 0); 509 if (tp) { 510 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 511 exit(0); 512 } 513 if (af == AF_INET || af == AF_UNSPEC) 514 for (tp = protox; tp->pr_name; tp++) 515 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 516 #ifdef INET6 517 if (af == AF_INET6 || af == AF_UNSPEC) 518 for (tp = ip6protox; tp->pr_name; tp++) 519 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 520 #endif /*INET6*/ 521 #ifdef IPSEC 522 if (af == PF_KEY || af == AF_UNSPEC) 523 for (tp = pfkeyprotox; tp->pr_name; tp++) 524 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 525 #endif /*IPSEC*/ 526 if (af == AF_NETGRAPH || af == AF_UNSPEC) 527 for (tp = netgraphprotox; tp->pr_name; tp++) 528 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 529 #ifdef ISO 530 if (af == AF_ISO || af == AF_UNSPEC) 531 for (tp = isoprotox; tp->pr_name; tp++) 532 printproto(tp, tp->pr_name, nl[N_NCPUS].n_value); 533 #endif 534 if ((af == AF_UNIX || af == AF_UNSPEC) && !Lflag && !sflag) 535 unixpr(); 536 exit(0); 537 } 538 539 /* 540 * Print out protocol statistics or control blocks (per sflag). 541 * If the interface was not specifically requested, and the symbol 542 * is not in the namelist, ignore this one. 543 */ 544 static void 545 printproto(struct protox *tp, const char *name, u_long ncpusaddr) 546 { 547 void (*pr)(u_long, const char *, int); 548 u_long off; 549 550 if (sflag) { 551 if (iflag) { 552 if (tp->pr_istats) 553 intpr(interval, nl[N_IFNET].n_value, 554 tp->pr_istats, ncpusaddr); 555 else if (pflag) 556 printf("%s: no per-interface stats routine\n", 557 tp->pr_name); 558 return; 559 } 560 else { 561 pr = tp->pr_stats; 562 if (!pr) { 563 if (pflag) 564 printf("%s: no stats routine\n", 565 tp->pr_name); 566 return; 567 } 568 off = tp->pr_usesysctl ? tp->pr_usesysctl 569 : nl[tp->pr_sindex].n_value; 570 } 571 } else { 572 pr = tp->pr_cblocks; 573 if (!pr) { 574 if (pflag) 575 printf("%s: no PCB routine\n", tp->pr_name); 576 return; 577 } 578 off = tp->pr_usesysctl ? tp->pr_usesysctl 579 : nl[tp->pr_index].n_value; 580 } 581 if (pr != NULL && (off || af != AF_UNSPEC)) 582 (*pr)(off, name, af); 583 } 584 585 /* 586 * Read kernel memory, return 0 on success. 587 */ 588 int 589 kread(u_long addr, char *buf, int size) 590 { 591 if (kvmd == NULL) { 592 /* 593 * XXX. 594 */ 595 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf); 596 if (kvmd != NULL) { 597 if (kvm_nlist(kvmd, nl) < 0) { 598 if(nlistf) 599 errx(1, "%s: kvm_nlist: %s", nlistf, 600 kvm_geterr(kvmd)); 601 else 602 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 603 } 604 605 if (nl[0].n_type == 0) { 606 if(nlistf) 607 errx(1, "%s: no namelist", nlistf); 608 else 609 errx(1, "no namelist"); 610 } 611 } else { 612 warnx("kvm not available"); 613 return(-1); 614 } 615 } 616 if (!buf) 617 return (0); 618 if (kvm_read(kvmd, addr, buf, size) != size) { 619 warnx("%s", kvm_geterr(kvmd)); 620 return (-1); 621 } 622 return (0); 623 } 624 625 const char * 626 plural(int n) 627 { 628 return (n != 1 ? "s" : ""); 629 } 630 631 const char * 632 plurales(int n) 633 { 634 return (n != 1 ? "es" : ""); 635 } 636 637 /* 638 * Find the protox for the given "well-known" name. 639 */ 640 static struct protox * 641 knownname(char *name) 642 { 643 struct protox **tpp, *tp; 644 645 for (tpp = protoprotox; *tpp; tpp++) 646 for (tp = *tpp; tp->pr_name; tp++) 647 if (strcmp(tp->pr_name, name) == 0) 648 return (tp); 649 return (NULL); 650 } 651 652 /* 653 * Find the protox corresponding to name. 654 */ 655 static struct protox * 656 name2protox(char *name) 657 { 658 struct protox *tp; 659 char **alias; /* alias from p->aliases */ 660 struct protoent *p; 661 662 /* 663 * Try to find the name in the list of "well-known" names. If that 664 * fails, check if name is an alias for an Internet protocol. 665 */ 666 if ((tp = knownname(name)) != NULL) 667 return (tp); 668 669 setprotoent(1); /* make protocol lookup cheaper */ 670 while ((p = getprotoent()) != NULL) { 671 /* assert: name not same as p->name */ 672 for (alias = p->p_aliases; *alias; alias++) 673 if (strcmp(name, *alias) == 0) { 674 endprotoent(); 675 return (knownname(p->p_name)); 676 } 677 } 678 endprotoent(); 679 return (NULL); 680 } 681 682 static void 683 usage(void) 684 { 685 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 686 "usage: netstat [-AaLnPSW] [-c cpu] [-f protocol_family | -p protocol]\n" 687 " [-M core] [-N system]", 688 " netstat -i | -I interface [-aBbdnt] [-f address_family]\n" 689 " [-M core] [-N system]", 690 " netstat -w wait [-I interface] [-d] [-M core] [-N system]", 691 " netstat -s [-s] [-z] [-f protocol_family | -p protocol] [-M core]", 692 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 693 " [-M core] [-N system]", 694 " netstat -m [-M core] [-N system]", 695 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 696 " netstat -rs [-s] [-M core] [-N system]", 697 " netstat -g [-W] [-f address_family] [-M core] [-N system]", 698 " netstat -gs [-s] [-f address_family] [-M core] [-N system]"); 699 exit(1); 700 } 701