1 /*- 2 * Copyright (c) 1983, 1988, 1993, 1995 3 * The 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if 0 35 #ifndef lint 36 static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95"; 37 #endif /* not lint */ 38 #endif 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/param.h> 44 #include <sys/queue.h> 45 #include <sys/domain.h> 46 #include <sys/socket.h> 47 #include <sys/socketvar.h> 48 #include <sys/sysctl.h> 49 #include <sys/protosw.h> 50 51 #include <net/route.h> 52 #include <netinet/in.h> 53 #include <netinet/in_systm.h> 54 #include <netinet/ip.h> 55 #include <netinet/ip_carp.h> 56 #ifdef INET6 57 #include <netinet/ip6.h> 58 #endif /* INET6 */ 59 #include <netinet/in_pcb.h> 60 #include <netinet/ip_icmp.h> 61 #include <netinet/icmp_var.h> 62 #include <netinet/igmp_var.h> 63 #include <netinet/ip_var.h> 64 #include <netinet/pim_var.h> 65 #include <netinet/tcp.h> 66 #include <netinet/tcpip.h> 67 #include <netinet/tcp_seq.h> 68 #define TCPSTATES 69 #include <netinet/tcp_fsm.h> 70 #include <netinet/tcp_timer.h> 71 #include <netinet/tcp_var.h> 72 #include <netinet/tcp_debug.h> 73 #include <netinet/udp.h> 74 #include <netinet/udp_var.h> 75 76 #include <arpa/inet.h> 77 #include <err.h> 78 #include <errno.h> 79 #include <libutil.h> 80 #include <netdb.h> 81 #include <stdint.h> 82 #include <stdio.h> 83 #include <stdlib.h> 84 #include <string.h> 85 #include <unistd.h> 86 #include "netstat.h" 87 88 char *inetname(struct in_addr *); 89 void inetprint(struct in_addr *, int, const char *, int); 90 #ifdef INET6 91 static int udp_done, tcp_done; 92 #endif /* INET6 */ 93 94 static int 95 pcblist_sysctl(int proto, char **bufp, int istcp) 96 { 97 const char *mibvar; 98 char *buf; 99 size_t len; 100 101 switch (proto) { 102 case IPPROTO_TCP: 103 mibvar = "net.inet.tcp.pcblist"; 104 break; 105 case IPPROTO_UDP: 106 mibvar = "net.inet.udp.pcblist"; 107 break; 108 case IPPROTO_DIVERT: 109 mibvar = "net.inet.divert.pcblist"; 110 break; 111 default: 112 mibvar = "net.inet.raw.pcblist"; 113 break; 114 } 115 116 len = 0; 117 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 118 if (errno != ENOENT) 119 warn("sysctl: %s", mibvar); 120 return (0); 121 } 122 if ((buf = malloc(len)) == 0) { 123 warnx("malloc %lu bytes", (u_long)len); 124 return (0); 125 } 126 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 127 warn("sysctl: %s", mibvar); 128 free(buf); 129 return (0); 130 } 131 *bufp = buf; 132 return (1); 133 } 134 135 /* 136 * Copied directly from uipc_socket2.c. We leave out some fields that are in 137 * nested structures that aren't used to avoid extra work. 138 */ 139 static void 140 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb) 141 { 142 xsb->sb_cc = sb->sb_cc; 143 xsb->sb_hiwat = sb->sb_hiwat; 144 xsb->sb_mbcnt = sb->sb_mbcnt; 145 xsb->sb_mbmax = sb->sb_mbmax; 146 xsb->sb_lowat = sb->sb_lowat; 147 xsb->sb_flags = sb->sb_flags; 148 xsb->sb_timeo = sb->sb_timeo; 149 } 150 151 int 152 sotoxsocket(struct socket *so, struct xsocket *xso) 153 { 154 struct protosw proto; 155 struct domain domain; 156 157 bzero(xso, sizeof *xso); 158 xso->xso_len = sizeof *xso; 159 xso->xso_so = so; 160 xso->so_type = so->so_type; 161 xso->so_options = so->so_options; 162 xso->so_linger = so->so_linger; 163 xso->so_state = so->so_state; 164 xso->so_pcb = so->so_pcb; 165 if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0) 166 return (-1); 167 xso->xso_protocol = proto.pr_protocol; 168 if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0) 169 return (-1); 170 xso->xso_family = domain.dom_family; 171 xso->so_qlen = so->so_qlen; 172 xso->so_incqlen = so->so_incqlen; 173 xso->so_qlimit = so->so_qlimit; 174 xso->so_timeo = so->so_timeo; 175 xso->so_error = so->so_error; 176 xso->so_oobmark = so->so_oobmark; 177 sbtoxsockbuf(&so->so_snd, &xso->so_snd); 178 sbtoxsockbuf(&so->so_rcv, &xso->so_rcv); 179 return (0); 180 } 181 182 static int 183 pcblist_kvm(u_long off, char **bufp, int istcp) 184 { 185 struct inpcbinfo pcbinfo; 186 struct inpcbhead listhead; 187 struct inpcb *inp; 188 struct xinpcb xi; 189 struct xinpgen xig; 190 struct xtcpcb xt; 191 struct socket so; 192 struct xsocket *xso; 193 char *buf, *p; 194 size_t len; 195 196 if (off == 0) 197 return (0); 198 kread(off, &pcbinfo, sizeof(pcbinfo)); 199 if (istcp) 200 len = 2 * sizeof(xig) + 201 (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * 202 sizeof(struct xtcpcb); 203 else 204 len = 2 * sizeof(xig) + 205 (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * 206 sizeof(struct xinpcb); 207 if ((buf = malloc(len)) == 0) { 208 warnx("malloc %lu bytes", (u_long)len); 209 return (0); 210 } 211 p = buf; 212 213 #define COPYOUT(obj, size) do { \ 214 if (len < (size)) { \ 215 warnx("buffer size exceeded"); \ 216 goto fail; \ 217 } \ 218 bcopy((obj), p, (size)); \ 219 len -= (size); \ 220 p += (size); \ 221 } while (0) 222 223 #define KREAD(off, buf, len) do { \ 224 if (kread((uintptr_t)(off), (buf), (len)) != 0) \ 225 goto fail; \ 226 } while (0) 227 228 /* Write out header. */ 229 xig.xig_len = sizeof xig; 230 xig.xig_count = pcbinfo.ipi_count; 231 xig.xig_gen = pcbinfo.ipi_gencnt; 232 xig.xig_sogen = 0; 233 COPYOUT(&xig, sizeof xig); 234 235 /* Walk the PCB list. */ 236 xt.xt_len = sizeof xt; 237 xi.xi_len = sizeof xi; 238 if (istcp) 239 xso = &xt.xt_socket; 240 else 241 xso = &xi.xi_socket; 242 KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead)); 243 LIST_FOREACH(inp, &listhead, inp_list) { 244 if (istcp) { 245 KREAD(inp, &xt.xt_inp, sizeof(*inp)); 246 inp = &xt.xt_inp; 247 } else { 248 KREAD(inp, &xi.xi_inp, sizeof(*inp)); 249 inp = &xi.xi_inp; 250 } 251 252 if (inp->inp_gencnt > pcbinfo.ipi_gencnt) 253 continue; 254 255 if (istcp) { 256 if (inp->inp_ppcb == NULL) 257 bzero(&xt.xt_tp, sizeof xt.xt_tp); 258 else if (inp->inp_vflag & INP_TIMEWAIT) { 259 bzero(&xt.xt_tp, sizeof xt.xt_tp); 260 xt.xt_tp.t_state = TCPS_TIME_WAIT; 261 } else 262 KREAD(inp->inp_ppcb, &xt.xt_tp, 263 sizeof xt.xt_tp); 264 } 265 if (inp->inp_socket) { 266 KREAD(inp->inp_socket, &so, sizeof(so)); 267 if (sotoxsocket(&so, xso) != 0) 268 goto fail; 269 } else { 270 bzero(xso, sizeof(*xso)); 271 if (istcp) 272 xso->xso_protocol = IPPROTO_TCP; 273 } 274 if (istcp) 275 COPYOUT(&xt, sizeof xt); 276 else 277 COPYOUT(&xi, sizeof xi); 278 } 279 280 /* Reread the pcbinfo and write out the footer. */ 281 kread(off, &pcbinfo, sizeof(pcbinfo)); 282 xig.xig_count = pcbinfo.ipi_count; 283 xig.xig_gen = pcbinfo.ipi_gencnt; 284 COPYOUT(&xig, sizeof xig); 285 286 *bufp = buf; 287 return (1); 288 289 fail: 290 free(buf); 291 return (0); 292 #undef COPYOUT 293 #undef KREAD 294 } 295 296 /* 297 * Print a summary of connections related to an Internet 298 * protocol. For TCP, also give state of connection. 299 * Listening processes (aflag) are suppressed unless the 300 * -a (all) flag is specified. 301 */ 302 void 303 protopr(u_long off, const char *name, int af1, int proto) 304 { 305 int istcp; 306 static int first = 1; 307 char *buf; 308 const char *vchar; 309 struct tcpcb *tp = NULL; 310 struct inpcb *inp; 311 struct xinpgen *xig, *oxig; 312 struct xsocket *so; 313 314 istcp = 0; 315 switch (proto) { 316 case IPPROTO_TCP: 317 #ifdef INET6 318 if (tcp_done != 0) 319 return; 320 else 321 tcp_done = 1; 322 #endif 323 istcp = 1; 324 break; 325 case IPPROTO_UDP: 326 #ifdef INET6 327 if (udp_done != 0) 328 return; 329 else 330 udp_done = 1; 331 #endif 332 break; 333 } 334 if (live) { 335 if (!pcblist_sysctl(proto, &buf, istcp)) 336 return; 337 } else { 338 if (!pcblist_kvm(off, &buf, istcp)) 339 return; 340 } 341 342 oxig = xig = (struct xinpgen *)buf; 343 for (xig = (struct xinpgen *)((char *)xig + xig->xig_len); 344 xig->xig_len > sizeof(struct xinpgen); 345 xig = (struct xinpgen *)((char *)xig + xig->xig_len)) { 346 if (istcp) { 347 tp = &((struct xtcpcb *)xig)->xt_tp; 348 inp = &((struct xtcpcb *)xig)->xt_inp; 349 so = &((struct xtcpcb *)xig)->xt_socket; 350 } else { 351 inp = &((struct xinpcb *)xig)->xi_inp; 352 so = &((struct xinpcb *)xig)->xi_socket; 353 } 354 355 /* Ignore sockets for protocols other than the desired one. */ 356 if (so->xso_protocol != proto) 357 continue; 358 359 /* Ignore PCBs which were freed during copyout. */ 360 if (inp->inp_gencnt > oxig->xig_gen) 361 continue; 362 363 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) 364 #ifdef INET6 365 || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) 366 #endif /* INET6 */ 367 || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0 368 #ifdef INET6 369 && (inp->inp_vflag & INP_IPV6) == 0 370 #endif /* INET6 */ 371 )) 372 ) 373 continue; 374 if (!aflag && 375 ( 376 (istcp && tp->t_state == TCPS_LISTEN) 377 || (af1 == AF_INET && 378 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 379 #ifdef INET6 380 || (af1 == AF_INET6 && 381 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 382 #endif /* INET6 */ 383 || (af1 == AF_UNSPEC && 384 (((inp->inp_vflag & INP_IPV4) != 0 && 385 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 386 #ifdef INET6 387 || ((inp->inp_vflag & INP_IPV6) != 0 && 388 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 389 #endif 390 )) 391 )) 392 continue; 393 394 if (first) { 395 if (!Lflag) { 396 printf("Active Internet connections"); 397 if (aflag) 398 printf(" (including servers)"); 399 } else 400 printf( 401 "Current listen queue sizes (qlen/incqlen/maxqlen)"); 402 putchar('\n'); 403 if (Aflag) 404 printf("%-8.8s ", "Tcpcb"); 405 if (Lflag) 406 printf("%-5.5s %-14.14s %-22.22s\n", 407 "Proto", "Listen", "Local Address"); 408 else 409 printf((Aflag && !Wflag) ? 410 "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" : 411 "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n", 412 "Proto", "Recv-Q", "Send-Q", 413 "Local Address", "Foreign Address", 414 "(state)"); 415 first = 0; 416 } 417 if (Lflag && so->so_qlimit == 0) 418 continue; 419 if (Aflag) { 420 if (istcp) 421 printf("%8lx ", (u_long)inp->inp_ppcb); 422 else 423 printf("%8lx ", (u_long)so->so_pcb); 424 } 425 #ifdef INET6 426 if ((inp->inp_vflag & INP_IPV6) != 0) 427 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? 428 "46" : "6 "; 429 else 430 #endif 431 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? 432 "4 " : " "; 433 printf("%-3.3s%-2.2s ", name, vchar); 434 if (Lflag) { 435 char buf1[15]; 436 437 snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, 438 so->so_incqlen, so->so_qlimit); 439 printf("%-14.14s ", buf1); 440 } else { 441 printf("%6u %6u ", so->so_rcv.sb_cc, so->so_snd.sb_cc); 442 } 443 if (numeric_port) { 444 if (inp->inp_vflag & INP_IPV4) { 445 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 446 name, 1); 447 if (!Lflag) 448 inetprint(&inp->inp_faddr, 449 (int)inp->inp_fport, name, 1); 450 } 451 #ifdef INET6 452 else if (inp->inp_vflag & INP_IPV6) { 453 inet6print(&inp->in6p_laddr, 454 (int)inp->inp_lport, name, 1); 455 if (!Lflag) 456 inet6print(&inp->in6p_faddr, 457 (int)inp->inp_fport, name, 1); 458 } /* else nothing printed now */ 459 #endif /* INET6 */ 460 } else if (inp->inp_flags & INP_ANONPORT) { 461 if (inp->inp_vflag & INP_IPV4) { 462 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 463 name, 1); 464 if (!Lflag) 465 inetprint(&inp->inp_faddr, 466 (int)inp->inp_fport, name, 0); 467 } 468 #ifdef INET6 469 else if (inp->inp_vflag & INP_IPV6) { 470 inet6print(&inp->in6p_laddr, 471 (int)inp->inp_lport, name, 1); 472 if (!Lflag) 473 inet6print(&inp->in6p_faddr, 474 (int)inp->inp_fport, name, 0); 475 } /* else nothing printed now */ 476 #endif /* INET6 */ 477 } else { 478 if (inp->inp_vflag & INP_IPV4) { 479 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 480 name, 0); 481 if (!Lflag) 482 inetprint(&inp->inp_faddr, 483 (int)inp->inp_fport, name, 484 inp->inp_lport != inp->inp_fport); 485 } 486 #ifdef INET6 487 else if (inp->inp_vflag & INP_IPV6) { 488 inet6print(&inp->in6p_laddr, 489 (int)inp->inp_lport, name, 0); 490 if (!Lflag) 491 inet6print(&inp->in6p_faddr, 492 (int)inp->inp_fport, name, 493 inp->inp_lport != inp->inp_fport); 494 } /* else nothing printed now */ 495 #endif /* INET6 */ 496 } 497 if (istcp && !Lflag) { 498 if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) 499 printf("%d", tp->t_state); 500 else { 501 printf("%s", tcpstates[tp->t_state]); 502 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) 503 /* Show T/TCP `hidden state' */ 504 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) 505 putchar('*'); 506 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ 507 } 508 } 509 putchar('\n'); 510 } 511 if (xig != oxig && xig->xig_gen != oxig->xig_gen) { 512 if (oxig->xig_count > xig->xig_count) { 513 printf("Some %s sockets may have been deleted.\n", 514 name); 515 } else if (oxig->xig_count < xig->xig_count) { 516 printf("Some %s sockets may have been created.\n", 517 name); 518 } else { 519 printf( 520 "Some %s sockets may have been created or deleted.\n", 521 name); 522 } 523 } 524 free(buf); 525 } 526 527 /* 528 * Dump TCP statistics structure. 529 */ 530 void 531 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 532 { 533 struct tcpstat tcpstat, zerostat; 534 size_t len = sizeof tcpstat; 535 536 #ifdef INET6 537 if (tcp_done != 0) 538 return; 539 else 540 tcp_done = 1; 541 #endif 542 543 if (live) { 544 if (zflag) 545 memset(&zerostat, 0, len); 546 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 547 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 548 warn("sysctl: net.inet.tcp.stats"); 549 return; 550 } 551 } else 552 kread(off, &tcpstat, len); 553 554 printf ("%s:\n", name); 555 556 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 557 printf(m, tcpstat.f, plural(tcpstat.f)) 558 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \ 559 printf(m, tcpstat.f) 560 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 561 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 562 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 563 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 564 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 565 printf(m, tcpstat.f, pluralies(tcpstat.f)) 566 567 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 568 p2(tcps_sndpack,tcps_sndbyte, "\t\t%lu data packet%s (%lu byte%s)\n"); 569 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 570 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 571 p(tcps_sndrexmitbad, 572 "\t\t%lu data packet%s unnecessarily retransmitted\n"); 573 p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 574 p2a(tcps_sndacks, tcps_delack, 575 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 576 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 577 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 578 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 579 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 580 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 581 p2(tcps_rcvackpack, tcps_rcvackbyte, 582 "\t\t%lu ack%s (for %lu byte%s)\n"); 583 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 584 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 585 p2(tcps_rcvpack, tcps_rcvbyte, 586 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 587 p2(tcps_rcvduppack, tcps_rcvdupbyte, 588 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 589 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 590 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 591 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 592 p2(tcps_rcvoopack, tcps_rcvoobyte, 593 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 594 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 595 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 596 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 597 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 598 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 599 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 600 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 601 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 602 p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n"); 603 p(tcps_connattempt, "\t%lu connection request%s\n"); 604 p(tcps_accepts, "\t%lu connection accept%s\n"); 605 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 606 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 607 p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n"); 608 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 609 p2(tcps_closed, tcps_drops, 610 "\t%lu connection%s closed (including %lu drop%s)\n"); 611 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 612 p(tcps_cachedrttvar, 613 "\t\t%lu connection%s updated cached RTT variance on close\n"); 614 p(tcps_cachedssthresh, 615 "\t\t%lu connection%s updated cached ssthresh on close\n"); 616 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 617 p2(tcps_rttupdated, tcps_segstimed, 618 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 619 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 620 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 621 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 622 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 623 p(tcps_finwait2_drops, 624 "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n"); 625 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 626 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 627 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 628 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 629 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 630 631 p3(tcps_sc_added, "\t%lu syncache entr%s added\n"); 632 p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 633 p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 634 p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); 635 p1a(tcps_sc_completed, "\t\t%lu completed\n"); 636 p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 637 p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 638 p1a(tcps_sc_reset, "\t\t%lu reset\n"); 639 p1a(tcps_sc_stale, "\t\t%lu stale\n"); 640 p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); 641 p1a(tcps_sc_badack, "\t\t%lu badack\n"); 642 p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); 643 p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); 644 p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); 645 p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); 646 647 p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n"); 648 p(tcps_sack_rexmits, 649 "\t%lu segment rexmit%s in SACK recovery episodes\n"); 650 p(tcps_sack_rexmit_bytes, 651 "\t%lu byte rexmit%s in SACK recovery episodes\n"); 652 p(tcps_sack_rcv_blocks, 653 "\t%lu SACK option%s (SACK blocks) received\n"); 654 p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n"); 655 p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n"); 656 657 #undef p 658 #undef p1a 659 #undef p2 660 #undef p2a 661 #undef p3 662 } 663 664 /* 665 * Dump UDP statistics structure. 666 */ 667 void 668 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 669 { 670 struct udpstat udpstat, zerostat; 671 size_t len = sizeof udpstat; 672 u_long delivered; 673 674 #ifdef INET6 675 if (udp_done != 0) 676 return; 677 else 678 udp_done = 1; 679 #endif 680 681 if (live) { 682 if (zflag) 683 memset(&zerostat, 0, len); 684 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 685 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 686 warn("sysctl: net.inet.udp.stats"); 687 return; 688 } 689 } else 690 kread(off, &udpstat, len); 691 692 printf("%s:\n", name); 693 #define p(f, m) if (udpstat.f || sflag <= 1) \ 694 printf(m, udpstat.f, plural(udpstat.f)) 695 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 696 printf(m, udpstat.f) 697 p(udps_ipackets, "\t%lu datagram%s received\n"); 698 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 699 p1a(udps_badlen, "\t%lu with bad data length field\n"); 700 p1a(udps_badsum, "\t%lu with bad checksum\n"); 701 p1a(udps_nosum, "\t%lu with no checksum\n"); 702 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 703 p(udps_noportbcast, 704 "\t%lu broadcast/multicast datagram%s undelivered\n"); 705 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 706 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 707 delivered = udpstat.udps_ipackets - 708 udpstat.udps_hdrops - 709 udpstat.udps_badlen - 710 udpstat.udps_badsum - 711 udpstat.udps_noport - 712 udpstat.udps_noportbcast - 713 udpstat.udps_fullsock; 714 if (delivered || sflag <= 1) 715 printf("\t%lu delivered\n", delivered); 716 p(udps_opackets, "\t%lu datagram%s output\n"); 717 /* the next statistic is cumulative in udps_noportbcast */ 718 p(udps_filtermcast, 719 "\t%lu time%s multicast source filter matched\n"); 720 #undef p 721 #undef p1a 722 } 723 724 /* 725 * Dump CARP statistics structure. 726 */ 727 void 728 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 729 { 730 struct carpstats carpstat, zerostat; 731 size_t len = sizeof(struct carpstats); 732 733 if (live) { 734 if (zflag) 735 memset(&zerostat, 0, len); 736 if (sysctlbyname("net.inet.carp.stats", &carpstat, &len, 737 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 738 if (errno != ENOENT) 739 warn("sysctl: net.inet.carp.stats"); 740 return; 741 } 742 } else { 743 if (off == 0) 744 return; 745 kread(off, &carpstat, len); 746 } 747 748 printf("%s:\n", name); 749 750 #define p(f, m) if (carpstat.f || sflag <= 1) \ 751 printf(m, (uintmax_t)carpstat.f, plural(carpstat.f)) 752 #define p2(f, m) if (carpstat.f || sflag <= 1) \ 753 printf(m, (uintmax_t)carpstat.f) 754 755 p(carps_ipackets, "\t%ju packet%s received (IPv4)\n"); 756 p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n"); 757 p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n"); 758 p(carps_hdrops, "\t\t%ju packet%s shorter than header\n"); 759 p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n"); 760 p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n"); 761 p2(carps_badlen, "\t\t%ju discarded because packet too short\n"); 762 p2(carps_badauth, "\t\t%ju discarded for bad authentication\n"); 763 p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n"); 764 p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n"); 765 p(carps_opackets, "\t%ju packet%s sent (IPv4)\n"); 766 p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n"); 767 p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 768 #if notyet 769 p(carps_ostates, "\t\t%s state update%s sent\n"); 770 #endif 771 #undef p 772 #undef p2 773 } 774 775 /* 776 * Dump IP statistics structure. 777 */ 778 void 779 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 780 { 781 struct ipstat ipstat, zerostat; 782 size_t len = sizeof ipstat; 783 784 if (live) { 785 if (zflag) 786 memset(&zerostat, 0, len); 787 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 788 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 789 warn("sysctl: net.inet.ip.stats"); 790 return; 791 } 792 } else 793 kread(off, &ipstat, len); 794 795 printf("%s:\n", name); 796 797 #define p(f, m) if (ipstat.f || sflag <= 1) \ 798 printf(m, ipstat.f, plural(ipstat.f)) 799 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 800 printf(m, ipstat.f) 801 802 p(ips_total, "\t%lu total packet%s received\n"); 803 p(ips_badsum, "\t%lu bad header checksum%s\n"); 804 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 805 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 806 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 807 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 808 p1a(ips_badlen, "\t%lu with data length < header length\n"); 809 p1a(ips_badoptions, "\t%lu with bad options\n"); 810 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 811 p(ips_fragments, "\t%lu fragment%s received\n"); 812 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 813 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 814 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 815 p(ips_delivered, "\t%lu packet%s for this host\n"); 816 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 817 p(ips_forward, "\t%lu packet%s forwarded"); 818 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 819 if (ipstat.ips_forward || sflag <= 1) 820 putchar('\n'); 821 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 822 p(ips_notmember, 823 "\t%lu packet%s received for unknown multicast group\n"); 824 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 825 p(ips_localout, "\t%lu packet%s sent from this host\n"); 826 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 827 p(ips_odropped, 828 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 829 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 830 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 831 p(ips_ofragments, "\t%lu fragment%s created\n"); 832 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 833 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 834 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 835 #undef p 836 #undef p1a 837 } 838 839 static const char *icmpnames[ICMP_MAXTYPE + 1] = { 840 "echo reply", /* RFC 792 */ 841 "#1", 842 "#2", 843 "destination unreachable", /* RFC 792 */ 844 "source quench", /* RFC 792 */ 845 "routing redirect", /* RFC 792 */ 846 "#6", 847 "#7", 848 "echo", /* RFC 792 */ 849 "router advertisement", /* RFC 1256 */ 850 "router solicitation", /* RFC 1256 */ 851 "time exceeded", /* RFC 792 */ 852 "parameter problem", /* RFC 792 */ 853 "time stamp", /* RFC 792 */ 854 "time stamp reply", /* RFC 792 */ 855 "information request", /* RFC 792 */ 856 "information request reply", /* RFC 792 */ 857 "address mask request", /* RFC 950 */ 858 "address mask reply", /* RFC 950 */ 859 "#19", 860 "#20", 861 "#21", 862 "#22", 863 "#23", 864 "#24", 865 "#25", 866 "#26", 867 "#27", 868 "#28", 869 "#29", 870 "icmp traceroute", /* RFC 1393 */ 871 "datagram conversion error", /* RFC 1475 */ 872 "mobile host redirect", 873 "IPv6 where-are-you", 874 "IPv6 i-am-here", 875 "mobile registration req", 876 "mobile registration reply", 877 "domain name request", /* RFC 1788 */ 878 "domain name reply", /* RFC 1788 */ 879 "icmp SKIP", 880 "icmp photuris", /* RFC 2521 */ 881 }; 882 883 /* 884 * Dump ICMP statistics. 885 */ 886 void 887 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 888 { 889 struct icmpstat icmpstat, zerostat; 890 int i, first; 891 size_t len; 892 893 len = sizeof icmpstat; 894 if (live) { 895 if (zflag) 896 memset(&zerostat, 0, len); 897 if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len, 898 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 899 warn("sysctl: net.inet.icmp.stats"); 900 return; 901 } 902 } else 903 kread(off, &icmpstat, len); 904 905 printf("%s:\n", name); 906 907 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 908 printf(m, icmpstat.f, plural(icmpstat.f)) 909 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 910 printf(m, icmpstat.f) 911 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 912 printf(m, icmpstat.f, plurales(icmpstat.f)) 913 914 p(icps_error, "\t%lu call%s to icmp_error\n"); 915 p(icps_oldicmp, 916 "\t%lu error%s not generated in response to an icmp message\n"); 917 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 918 if (icmpstat.icps_outhist[i] != 0) { 919 if (first) { 920 printf("\tOutput histogram:\n"); 921 first = 0; 922 } 923 if (icmpnames[i] != NULL) 924 printf("\t\t%s: %lu\n", icmpnames[i], 925 icmpstat.icps_outhist[i]); 926 else 927 printf("\t\tunknown ICMP #%d: %lu\n", i, 928 icmpstat.icps_outhist[i]); 929 } 930 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 931 p(icps_tooshort, "\t%lu message%s less than the minimum length\n"); 932 p(icps_checksum, "\t%lu message%s with bad checksum\n"); 933 p(icps_badlen, "\t%lu message%s with bad length\n"); 934 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 935 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 936 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 937 if (icmpstat.icps_inhist[i] != 0) { 938 if (first) { 939 printf("\tInput histogram:\n"); 940 first = 0; 941 } 942 if (icmpnames[i] != NULL) 943 printf("\t\t%s: %lu\n", icmpnames[i], 944 icmpstat.icps_inhist[i]); 945 else 946 printf("\t\tunknown ICMP #%d: %lu\n", i, 947 icmpstat.icps_inhist[i]); 948 } 949 p(icps_reflect, "\t%lu message response%s generated\n"); 950 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 951 p(icps_noroute, "\t%lu no return route%s\n"); 952 #undef p 953 #undef p1a 954 #undef p2 955 if (live) { 956 len = sizeof i; 957 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) < 958 0) 959 return; 960 printf("\tICMP address mask responses are %sabled\n", 961 i ? "en" : "dis"); 962 } 963 } 964 965 /* 966 * Dump IGMP statistics structure. 967 */ 968 void 969 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 970 { 971 struct igmpstat igmpstat, zerostat; 972 size_t len = sizeof igmpstat; 973 974 if (live) { 975 if (zflag) 976 memset(&zerostat, 0, len); 977 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 978 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 979 warn("sysctl: net.inet.igmp.stats"); 980 return; 981 } 982 } else 983 kread(off, &igmpstat, len); 984 985 printf("%s:\n", name); 986 987 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 988 printf(m, igmpstat.f, plural(igmpstat.f)) 989 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 990 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 991 p(igps_rcv_total, "\t%u message%s received\n"); 992 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 993 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 994 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 995 py(igps_rcv_badqueries, 996 "\t%u membership quer%s received with invalid field(s)\n"); 997 p(igps_rcv_reports, "\t%u membership report%s received\n"); 998 p(igps_rcv_badreports, 999 "\t%u membership report%s received with invalid field(s)\n"); 1000 p(igps_rcv_ourreports, 1001 "\t%u membership report%s received for groups to which we belong\n"); 1002 p(igps_snd_reports, "\t%u membership report%s sent\n"); 1003 #undef p 1004 #undef py 1005 } 1006 1007 /* 1008 * Dump PIM statistics structure. 1009 */ 1010 void 1011 pim_stats(u_long off __unused, const char *name, int af1 __unused, 1012 int proto __unused) 1013 { 1014 struct pimstat pimstat, zerostat; 1015 size_t len = sizeof pimstat; 1016 1017 if (live) { 1018 if (zflag) 1019 memset(&zerostat, 0, len); 1020 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, 1021 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 1022 if (errno != ENOENT) 1023 warn("sysctl: net.inet.pim.stats"); 1024 return; 1025 } 1026 } else { 1027 if (off == 0) 1028 return; 1029 kread(off, &pimstat, len); 1030 } 1031 1032 printf("%s:\n", name); 1033 1034 #define p(f, m) if (pimstat.f || sflag <= 1) \ 1035 printf(m, (uintmax_t)pimstat.f, plural(pimstat.f)) 1036 #define py(f, m) if (pimstat.f || sflag <= 1) \ 1037 printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y") 1038 p(pims_rcv_total_msgs, "\t%ju message%s received\n"); 1039 p(pims_rcv_total_bytes, "\t%ju byte%s received\n"); 1040 p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); 1041 p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n"); 1042 p(pims_rcv_badversion, "\t%ju message%s received with bad version\n"); 1043 p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n"); 1044 p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n"); 1045 p(pims_rcv_registers_wrongiif, 1046 "\t%ju data register message%s received on wrong iif\n"); 1047 p(pims_rcv_badregisters, "\t%ju bad register%s received\n"); 1048 p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n"); 1049 p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n"); 1050 #undef p 1051 #undef py 1052 } 1053 1054 /* 1055 * Pretty print an Internet address (net address + port). 1056 */ 1057 void 1058 inetprint(struct in_addr *in, int port, const char *proto, int num_port) 1059 { 1060 struct servent *sp = 0; 1061 char line[80], *cp; 1062 int width; 1063 1064 if (Wflag) 1065 sprintf(line, "%s.", inetname(in)); 1066 else 1067 sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); 1068 cp = index(line, '\0'); 1069 if (!num_port && port) 1070 sp = getservbyport((int)port, proto); 1071 if (sp || port == 0) 1072 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 1073 else 1074 sprintf(cp, "%d ", ntohs((u_short)port)); 1075 width = (Aflag && !Wflag) ? 18 : 22; 1076 if (Wflag) 1077 printf("%-*s ", width, line); 1078 else 1079 printf("%-*.*s ", width, width, line); 1080 } 1081 1082 /* 1083 * Construct an Internet address representation. 1084 * If numeric_addr has been supplied, give 1085 * numeric value, otherwise try for symbolic name. 1086 */ 1087 char * 1088 inetname(struct in_addr *inp) 1089 { 1090 char *cp; 1091 static char line[MAXHOSTNAMELEN]; 1092 struct hostent *hp; 1093 struct netent *np; 1094 1095 cp = 0; 1096 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 1097 int net = inet_netof(*inp); 1098 int lna = inet_lnaof(*inp); 1099 1100 if (lna == INADDR_ANY) { 1101 np = getnetbyaddr(net, AF_INET); 1102 if (np) 1103 cp = np->n_name; 1104 } 1105 if (cp == 0) { 1106 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 1107 if (hp) { 1108 cp = hp->h_name; 1109 trimdomain(cp, strlen(cp)); 1110 } 1111 } 1112 } 1113 if (inp->s_addr == INADDR_ANY) 1114 strcpy(line, "*"); 1115 else if (cp) { 1116 strncpy(line, cp, sizeof(line) - 1); 1117 line[sizeof(line) - 1] = '\0'; 1118 } else { 1119 inp->s_addr = ntohl(inp->s_addr); 1120 #define C(x) ((u_int)((x) & 0xff)) 1121 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 1122 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 1123 } 1124 return (line); 1125 } 1126