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/socket.h> 46 #include <sys/socketvar.h> 47 #include <sys/sysctl.h> 48 #include <sys/protosw.h> 49 50 #include <net/route.h> 51 #include <netinet/in.h> 52 #include <netinet/in_systm.h> 53 #include <netinet/ip.h> 54 #include <netinet/ip_carp.h> 55 #ifdef INET6 56 #include <netinet/ip6.h> 57 #endif /* INET6 */ 58 #include <netinet/in_pcb.h> 59 #include <netinet/ip_icmp.h> 60 #include <netinet/icmp_var.h> 61 #include <netinet/igmp_var.h> 62 #include <netinet/ip_var.h> 63 #include <netinet/pim_var.h> 64 #include <netinet/tcp.h> 65 #include <netinet/tcpip.h> 66 #include <netinet/tcp_seq.h> 67 #define TCPSTATES 68 #include <netinet/tcp_fsm.h> 69 #include <netinet/tcp_timer.h> 70 #include <netinet/tcp_var.h> 71 #include <netinet/tcp_debug.h> 72 #include <netinet/udp.h> 73 #include <netinet/udp_var.h> 74 75 #include <arpa/inet.h> 76 #include <err.h> 77 #include <errno.h> 78 #include <libutil.h> 79 #include <netdb.h> 80 #include <stdint.h> 81 #include <stdio.h> 82 #include <stdlib.h> 83 #include <string.h> 84 #include <unistd.h> 85 #include "netstat.h" 86 87 char *inetname (struct in_addr *); 88 void inetprint (struct in_addr *, int, const char *, int); 89 #ifdef INET6 90 static int udp_done, tcp_done; 91 #endif /* INET6 */ 92 93 /* 94 * Print a summary of connections related to an Internet 95 * protocol. For TCP, also give state of connection. 96 * Listening processes (aflag) are suppressed unless the 97 * -a (all) flag is specified. 98 */ 99 void 100 protopr(u_long proto, /* for sysctl version we pass proto # */ 101 const char *name, int af1) 102 { 103 int istcp; 104 static int first = 1; 105 char *buf; 106 const char *mibvar, *vchar; 107 struct tcpcb *tp = NULL; 108 struct inpcb *inp; 109 struct xinpgen *xig, *oxig; 110 struct xsocket *so; 111 size_t len; 112 113 istcp = 0; 114 switch (proto) { 115 case IPPROTO_TCP: 116 #ifdef INET6 117 if (tcp_done != 0) 118 return; 119 else 120 tcp_done = 1; 121 #endif 122 istcp = 1; 123 mibvar = "net.inet.tcp.pcblist"; 124 break; 125 case IPPROTO_UDP: 126 #ifdef INET6 127 if (udp_done != 0) 128 return; 129 else 130 udp_done = 1; 131 #endif 132 mibvar = "net.inet.udp.pcblist"; 133 break; 134 case IPPROTO_DIVERT: 135 mibvar = "net.inet.divert.pcblist"; 136 break; 137 default: 138 mibvar = "net.inet.raw.pcblist"; 139 break; 140 } 141 len = 0; 142 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 143 if (errno != ENOENT) 144 warn("sysctl: %s", mibvar); 145 return; 146 } 147 if ((buf = malloc(len)) == 0) { 148 warnx("malloc %lu bytes", (u_long)len); 149 return; 150 } 151 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 152 warn("sysctl: %s", mibvar); 153 free(buf); 154 return; 155 } 156 157 oxig = xig = (struct xinpgen *)buf; 158 for (xig = (struct xinpgen *)((char *)xig + xig->xig_len); 159 xig->xig_len > sizeof(struct xinpgen); 160 xig = (struct xinpgen *)((char *)xig + xig->xig_len)) { 161 if (istcp) { 162 tp = &((struct xtcpcb *)xig)->xt_tp; 163 inp = &((struct xtcpcb *)xig)->xt_inp; 164 so = &((struct xtcpcb *)xig)->xt_socket; 165 } else { 166 inp = &((struct xinpcb *)xig)->xi_inp; 167 so = &((struct xinpcb *)xig)->xi_socket; 168 } 169 170 /* Ignore sockets for protocols other than the desired one. */ 171 if (so->xso_protocol != (int)proto) 172 continue; 173 174 /* Ignore PCBs which were freed during copyout. */ 175 if (inp->inp_gencnt > oxig->xig_gen) 176 continue; 177 178 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) 179 #ifdef INET6 180 || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) 181 #endif /* INET6 */ 182 || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0 183 #ifdef INET6 184 && (inp->inp_vflag & 185 INP_IPV6) == 0 186 #endif /* INET6 */ 187 )) 188 ) 189 continue; 190 if (!aflag && 191 ( 192 (istcp && tp->t_state == TCPS_LISTEN) 193 || (af1 == AF_INET && 194 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 195 #ifdef INET6 196 || (af1 == AF_INET6 && 197 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 198 #endif /* INET6 */ 199 || (af1 == AF_UNSPEC && 200 (((inp->inp_vflag & INP_IPV4) != 0 && 201 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 202 #ifdef INET6 203 || ((inp->inp_vflag & INP_IPV6) != 0 && 204 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 205 #endif 206 )) 207 )) 208 continue; 209 210 if (first) { 211 if (!Lflag) { 212 printf("Active Internet connections"); 213 if (aflag) 214 printf(" (including servers)"); 215 } else 216 printf( 217 "Current listen queue sizes (qlen/incqlen/maxqlen)"); 218 putchar('\n'); 219 if (Aflag) 220 printf("%-8.8s ", "Tcpcb"); 221 if (Lflag) 222 printf("%-5.5s %-14.14s %-22.22s\n", 223 "Proto", "Listen", "Local Address"); 224 else 225 printf((Aflag && !Wflag) ? 226 "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" : 227 "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n", 228 "Proto", "Recv-Q", "Send-Q", 229 "Local Address", "Foreign Address", 230 "(state)"); 231 first = 0; 232 } 233 if (Lflag && so->so_qlimit == 0) 234 continue; 235 if (Aflag) { 236 if (istcp) 237 printf("%8lx ", (u_long)inp->inp_ppcb); 238 else 239 printf("%8lx ", (u_long)so->so_pcb); 240 } 241 #ifdef INET6 242 if ((inp->inp_vflag & INP_IPV6) != 0) 243 vchar = ((inp->inp_vflag & INP_IPV4) != 0) 244 ? "46" : "6 "; 245 else 246 #endif 247 vchar = ((inp->inp_vflag & INP_IPV4) != 0) 248 ? "4 " : " "; 249 printf("%-3.3s%-2.2s ", name, vchar); 250 if (Lflag) { 251 char buf1[15]; 252 253 snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, 254 so->so_incqlen, so->so_qlimit); 255 printf("%-14.14s ", buf1); 256 } else { 257 printf("%6u %6u ", 258 so->so_rcv.sb_cc, 259 so->so_snd.sb_cc); 260 } 261 if (numeric_port) { 262 if (inp->inp_vflag & INP_IPV4) { 263 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 264 name, 1); 265 if (!Lflag) 266 inetprint(&inp->inp_faddr, 267 (int)inp->inp_fport, name, 1); 268 } 269 #ifdef INET6 270 else if (inp->inp_vflag & INP_IPV6) { 271 inet6print(&inp->in6p_laddr, 272 (int)inp->inp_lport, name, 1); 273 if (!Lflag) 274 inet6print(&inp->in6p_faddr, 275 (int)inp->inp_fport, name, 1); 276 } /* else nothing printed now */ 277 #endif /* INET6 */ 278 } else if (inp->inp_flags & INP_ANONPORT) { 279 if (inp->inp_vflag & INP_IPV4) { 280 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 281 name, 1); 282 if (!Lflag) 283 inetprint(&inp->inp_faddr, 284 (int)inp->inp_fport, name, 0); 285 } 286 #ifdef INET6 287 else if (inp->inp_vflag & INP_IPV6) { 288 inet6print(&inp->in6p_laddr, 289 (int)inp->inp_lport, name, 1); 290 if (!Lflag) 291 inet6print(&inp->in6p_faddr, 292 (int)inp->inp_fport, name, 0); 293 } /* else nothing printed now */ 294 #endif /* INET6 */ 295 } else { 296 if (inp->inp_vflag & INP_IPV4) { 297 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 298 name, 0); 299 if (!Lflag) 300 inetprint(&inp->inp_faddr, 301 (int)inp->inp_fport, name, 302 inp->inp_lport != 303 inp->inp_fport); 304 } 305 #ifdef INET6 306 else if (inp->inp_vflag & INP_IPV6) { 307 inet6print(&inp->in6p_laddr, 308 (int)inp->inp_lport, name, 0); 309 if (!Lflag) 310 inet6print(&inp->in6p_faddr, 311 (int)inp->inp_fport, name, 312 inp->inp_lport != 313 inp->inp_fport); 314 } /* else nothing printed now */ 315 #endif /* INET6 */ 316 } 317 if (istcp && !Lflag) { 318 if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) 319 printf("%d", tp->t_state); 320 else { 321 printf("%s", tcpstates[tp->t_state]); 322 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) 323 /* Show T/TCP `hidden state' */ 324 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) 325 putchar('*'); 326 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ 327 } 328 } 329 putchar('\n'); 330 } 331 if (xig != oxig && xig->xig_gen != oxig->xig_gen) { 332 if (oxig->xig_count > xig->xig_count) { 333 printf("Some %s sockets may have been deleted.\n", 334 name); 335 } else if (oxig->xig_count < xig->xig_count) { 336 printf("Some %s sockets may have been created.\n", 337 name); 338 } else { 339 printf("Some %s sockets may have been created or deleted.\n", 340 name); 341 } 342 } 343 free(buf); 344 } 345 346 /* 347 * Dump TCP statistics structure. 348 */ 349 void 350 tcp_stats(u_long off __unused, const char *name, int af1 __unused) 351 { 352 struct tcpstat tcpstat, zerostat; 353 size_t len = sizeof tcpstat; 354 355 if (zflag) 356 memset(&zerostat, 0, len); 357 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 358 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 359 warn("sysctl: net.inet.tcp.stats"); 360 return; 361 } 362 363 #ifdef INET6 364 if (tcp_done != 0) 365 return; 366 else 367 tcp_done = 1; 368 #endif 369 370 printf ("%s:\n", name); 371 372 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 373 printf(m, tcpstat.f, plural(tcpstat.f)) 374 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \ 375 printf(m, tcpstat.f) 376 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 377 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 378 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 379 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 380 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 381 printf(m, tcpstat.f, plurales(tcpstat.f)) 382 383 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 384 p2(tcps_sndpack,tcps_sndbyte, 385 "\t\t%lu data packet%s (%lu byte%s)\n"); 386 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 387 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 388 p(tcps_sndrexmitbad, 389 "\t\t%lu data packet%s unnecessarily retransmitted\n"); 390 p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 391 p2a(tcps_sndacks, tcps_delack, 392 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 393 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 394 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 395 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 396 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 397 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 398 p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%lu ack%s (for %lu byte%s)\n"); 399 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 400 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 401 p2(tcps_rcvpack, tcps_rcvbyte, 402 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 403 p2(tcps_rcvduppack, tcps_rcvdupbyte, 404 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 405 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 406 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 407 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 408 p2(tcps_rcvoopack, tcps_rcvoobyte, 409 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 410 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 411 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 412 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 413 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 414 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 415 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 416 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 417 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 418 p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n"); 419 p(tcps_connattempt, "\t%lu connection request%s\n"); 420 p(tcps_accepts, "\t%lu connection accept%s\n"); 421 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 422 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 423 p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n"); 424 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 425 p2(tcps_closed, tcps_drops, 426 "\t%lu connection%s closed (including %lu drop%s)\n"); 427 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 428 p(tcps_cachedrttvar, 429 "\t\t%lu connection%s updated cached RTT variance on close\n"); 430 p(tcps_cachedssthresh, 431 "\t\t%lu connection%s updated cached ssthresh on close\n"); 432 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 433 p2(tcps_rttupdated, tcps_segstimed, 434 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 435 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 436 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 437 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 438 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 439 p(tcps_finwait2_drops, "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n"); 440 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 441 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 442 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 443 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 444 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 445 446 p(tcps_sc_added, "\t%lu syncache entrie%s added\n"); 447 p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 448 p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 449 p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); 450 p1a(tcps_sc_completed, "\t\t%lu completed\n"); 451 p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 452 p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 453 p1a(tcps_sc_reset, "\t\t%lu reset\n"); 454 p1a(tcps_sc_stale, "\t\t%lu stale\n"); 455 p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); 456 p1a(tcps_sc_badack, "\t\t%lu badack\n"); 457 p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); 458 p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); 459 p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); 460 p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); 461 462 p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n"); 463 p(tcps_sack_rexmits, 464 "\t%lu segment rexmit%s in SACK recovery episodes\n"); 465 p(tcps_sack_rexmit_bytes, 466 "\t%lu byte rexmit%s in SACK recovery episodes\n"); 467 p(tcps_sack_rcv_blocks, 468 "\t%lu SACK option%s (SACK blocks) received\n"); 469 p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n"); 470 p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n"); 471 472 #undef p 473 #undef p1a 474 #undef p2 475 #undef p2a 476 #undef p3 477 } 478 479 /* 480 * Dump UDP statistics structure. 481 */ 482 void 483 udp_stats(u_long off __unused, const char *name, int af1 __unused) 484 { 485 struct udpstat udpstat, zerostat; 486 size_t len = sizeof udpstat; 487 u_long delivered; 488 489 if (zflag) 490 memset(&zerostat, 0, len); 491 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 492 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 493 warn("sysctl: net.inet.udp.stats"); 494 return; 495 } 496 497 #ifdef INET6 498 if (udp_done != 0) 499 return; 500 else 501 udp_done = 1; 502 #endif 503 504 printf("%s:\n", name); 505 #define p(f, m) if (udpstat.f || sflag <= 1) \ 506 printf(m, udpstat.f, plural(udpstat.f)) 507 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 508 printf(m, udpstat.f) 509 p(udps_ipackets, "\t%lu datagram%s received\n"); 510 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 511 p1a(udps_badlen, "\t%lu with bad data length field\n"); 512 p1a(udps_badsum, "\t%lu with bad checksum\n"); 513 p1a(udps_nosum, "\t%lu with no checksum\n"); 514 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 515 p(udps_noportbcast, 516 "\t%lu broadcast/multicast datagram%s dropped due to no socket\n"); 517 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 518 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 519 delivered = udpstat.udps_ipackets - 520 udpstat.udps_hdrops - 521 udpstat.udps_badlen - 522 udpstat.udps_badsum - 523 udpstat.udps_noport - 524 udpstat.udps_noportbcast - 525 udpstat.udps_fullsock; 526 if (delivered || sflag <= 1) 527 printf("\t%lu delivered\n", delivered); 528 p(udps_opackets, "\t%lu datagram%s output\n"); 529 #undef p 530 #undef p1a 531 } 532 533 /* 534 * Dump CARP statistics structure. 535 */ 536 void 537 carp_stats(u_long off __unused, const char *name, int af1 __unused) 538 { 539 struct carpstats carpstat, zerostat; 540 size_t len = sizeof(struct carpstats); 541 542 if (zflag) 543 memset(&zerostat, 0, len); 544 if (sysctlbyname("net.inet.carp.stats", &carpstat, &len, 545 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 546 if (errno != ENOENT) 547 warn("sysctl: net.inet.carp.stats"); 548 return; 549 } 550 551 printf("%s:\n", name); 552 553 #define p(f, m) if (carpstat.f || sflag <= 1) \ 554 printf(m, (uintmax_t)carpstat.f, plural(carpstat.f)) 555 #define p2(f, m) if (carpstat.f || sflag <= 1) \ 556 printf(m, (uintmax_t)carpstat.f) 557 558 p(carps_ipackets, "\t%ju packet%s received (IPv4)\n"); 559 p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n"); 560 p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n"); 561 p(carps_hdrops, "\t\t%ju packet%s shorter than header\n"); 562 p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n"); 563 p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n"); 564 p2(carps_badlen, "\t\t%ju discarded because packet too short\n"); 565 p2(carps_badauth, "\t\t%ju discarded for bad authentication\n"); 566 p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n"); 567 p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n"); 568 p(carps_opackets, "\t%ju packet%s sent (IPv4)\n"); 569 p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n"); 570 p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n"); 571 #if notyet 572 p(carps_ostates, "\t\t%s state update%s sent\n"); 573 #endif 574 #undef p 575 #undef p2 576 } 577 578 /* 579 * Dump IP statistics structure. 580 */ 581 void 582 ip_stats(u_long off __unused, const char *name, int af1 __unused) 583 { 584 struct ipstat ipstat, zerostat; 585 size_t len = sizeof ipstat; 586 587 if (zflag) 588 memset(&zerostat, 0, len); 589 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 590 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 591 warn("sysctl: net.inet.ip.stats"); 592 return; 593 } 594 595 printf("%s:\n", name); 596 597 #define p(f, m) if (ipstat.f || sflag <= 1) \ 598 printf(m, ipstat.f, plural(ipstat.f)) 599 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 600 printf(m, ipstat.f) 601 602 p(ips_total, "\t%lu total packet%s received\n"); 603 p(ips_badsum, "\t%lu bad header checksum%s\n"); 604 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 605 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 606 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 607 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 608 p1a(ips_badlen, "\t%lu with data length < header length\n"); 609 p1a(ips_badoptions, "\t%lu with bad options\n"); 610 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 611 p(ips_fragments, "\t%lu fragment%s received\n"); 612 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 613 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 614 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 615 p(ips_delivered, "\t%lu packet%s for this host\n"); 616 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 617 p(ips_forward, "\t%lu packet%s forwarded"); 618 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 619 if (ipstat.ips_forward || sflag <= 1) 620 putchar('\n'); 621 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 622 p(ips_notmember, 623 "\t%lu packet%s received for unknown multicast group\n"); 624 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 625 p(ips_localout, "\t%lu packet%s sent from this host\n"); 626 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 627 p(ips_odropped, 628 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 629 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 630 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 631 p(ips_ofragments, "\t%lu fragment%s created\n"); 632 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 633 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 634 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 635 #undef p 636 #undef p1a 637 } 638 639 static const char *icmpnames[ICMP_MAXTYPE + 1] = { 640 "echo reply", /* RFC 792 */ 641 "#1", 642 "#2", 643 "destination unreachable", /* RFC 792 */ 644 "source quench", /* RFC 792 */ 645 "routing redirect", /* RFC 792 */ 646 "#6", 647 "#7", 648 "echo", /* RFC 792 */ 649 "router advertisement", /* RFC 1256 */ 650 "router solicitation", /* RFC 1256 */ 651 "time exceeded", /* RFC 792 */ 652 "parameter problem", /* RFC 792 */ 653 "time stamp", /* RFC 792 */ 654 "time stamp reply", /* RFC 792 */ 655 "information request", /* RFC 792 */ 656 "information request reply", /* RFC 792 */ 657 "address mask request", /* RFC 950 */ 658 "address mask reply", /* RFC 950 */ 659 "#19", 660 "#20", 661 "#21", 662 "#22", 663 "#23", 664 "#24", 665 "#25", 666 "#26", 667 "#27", 668 "#28", 669 "#29", 670 "icmp traceroute", /* RFC 1393 */ 671 "datagram conversion error", /* RFC 1475 */ 672 "mobile host redirect", 673 "IPv6 where-are-you", 674 "IPv6 i-am-here", 675 "mobile registration req", 676 "mobile registration reply", 677 "domain name request", /* RFC 1788 */ 678 "domain name reply", /* RFC 1788 */ 679 "icmp SKIP", 680 "icmp photuris", /* RFC 2521 */ 681 }; 682 683 /* 684 * Dump ICMP statistics. 685 */ 686 void 687 icmp_stats(u_long off __unused, const char *name, int af1 __unused) 688 { 689 struct icmpstat icmpstat, zerostat; 690 int i, first; 691 int mib[4]; /* CTL_NET + PF_INET + IPPROTO_ICMP + req */ 692 size_t len; 693 694 mib[0] = CTL_NET; 695 mib[1] = PF_INET; 696 mib[2] = IPPROTO_ICMP; 697 mib[3] = ICMPCTL_STATS; 698 699 len = sizeof icmpstat; 700 if (zflag) 701 memset(&zerostat, 0, len); 702 if (sysctl(mib, 4, &icmpstat, &len, 703 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 704 warn("sysctl: net.inet.icmp.stats"); 705 return; 706 } 707 708 printf("%s:\n", name); 709 710 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 711 printf(m, icmpstat.f, plural(icmpstat.f)) 712 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 713 printf(m, icmpstat.f) 714 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 715 printf(m, icmpstat.f, plurales(icmpstat.f)) 716 717 p(icps_error, "\t%lu call%s to icmp_error\n"); 718 p(icps_oldicmp, 719 "\t%lu error%s not generated in response to an icmp message\n"); 720 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 721 if (icmpstat.icps_outhist[i] != 0) { 722 if (first) { 723 printf("\tOutput histogram:\n"); 724 first = 0; 725 } 726 if (icmpnames[i] != NULL) 727 printf("\t\t%s: %lu\n", icmpnames[i], 728 icmpstat.icps_outhist[i]); 729 else 730 printf("\t\tunknown ICMP #%d: %lu\n", i, 731 icmpstat.icps_outhist[i]); 732 } 733 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 734 p(icps_tooshort, "\t%lu message%s < minimum length\n"); 735 p(icps_checksum, "\t%lu bad checksum%s\n"); 736 p(icps_badlen, "\t%lu message%s with bad length\n"); 737 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 738 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 739 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 740 if (icmpstat.icps_inhist[i] != 0) { 741 if (first) { 742 printf("\tInput histogram:\n"); 743 first = 0; 744 } 745 if (icmpnames[i] != NULL) 746 printf("\t\t%s: %lu\n", icmpnames[i], 747 icmpstat.icps_inhist[i]); 748 else 749 printf("\t\tunknown ICMP #%d: %lu\n", i, 750 icmpstat.icps_inhist[i]); 751 } 752 p(icps_reflect, "\t%lu message response%s generated\n"); 753 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 754 p(icps_noroute, "\t%lu no return route%s\n"); 755 #undef p 756 #undef p1a 757 #undef p2 758 mib[3] = ICMPCTL_MASKREPL; 759 len = sizeof i; 760 if (sysctl(mib, 4, &i, &len, (void *)0, 0) < 0) 761 return; 762 printf("\tICMP address mask responses are %sabled\n", 763 i ? "en" : "dis"); 764 } 765 766 /* 767 * Dump IGMP statistics structure. 768 */ 769 void 770 igmp_stats(u_long off __unused, const char *name, int af1 __unused) 771 { 772 struct igmpstat igmpstat, zerostat; 773 size_t len = sizeof igmpstat; 774 775 if (zflag) 776 memset(&zerostat, 0, len); 777 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 778 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 779 warn("sysctl: net.inet.igmp.stats"); 780 return; 781 } 782 783 printf("%s:\n", name); 784 785 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 786 printf(m, igmpstat.f, plural(igmpstat.f)) 787 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 788 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 789 p(igps_rcv_total, "\t%u message%s received\n"); 790 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 791 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 792 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 793 py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n"); 794 p(igps_rcv_reports, "\t%u membership report%s received\n"); 795 p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n"); 796 p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n"); 797 p(igps_snd_reports, "\t%u membership report%s sent\n"); 798 #undef p 799 #undef py 800 } 801 802 /* 803 * Dump PIM statistics structure. 804 */ 805 void 806 pim_stats(u_long off __unused, const char *name, int af1 __unused) 807 { 808 struct pimstat pimstat, zerostat; 809 size_t len = sizeof pimstat; 810 811 if (zflag) 812 memset(&zerostat, 0, len); 813 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, 814 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 815 if (errno != ENOENT) 816 warn("sysctl: net.inet.pim.stats"); 817 return; 818 } 819 820 printf("%s:\n", name); 821 822 #define p(f, m) if (pimstat.f || sflag <= 1) \ 823 printf(m, (uintmax_t)pimstat.f, plural(pimstat.f)) 824 #define py(f, m) if (pimstat.f || sflag <= 1) \ 825 printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y") 826 p(pims_rcv_total_msgs, "\t%ju message%s received\n"); 827 p(pims_rcv_total_bytes, "\t%ju byte%s received\n"); 828 p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); 829 p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n"); 830 p(pims_rcv_badversion, "\t%ju message%s received with bad version\n"); 831 p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n"); 832 p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n"); 833 p(pims_rcv_registers_wrongiif, "\t%ju data register message%s received on wrong iif\n"); 834 p(pims_rcv_badregisters, "\t%ju bad register%s received\n"); 835 p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n"); 836 p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n"); 837 #undef p 838 #undef py 839 } 840 841 /* 842 * Pretty print an Internet address (net address + port). 843 */ 844 void 845 inetprint(struct in_addr *in, int port, const char *proto, int num_port) 846 { 847 struct servent *sp = 0; 848 char line[80], *cp; 849 int width; 850 851 if (Wflag) 852 sprintf(line, "%s.", inetname(in)); 853 else 854 sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); 855 cp = index(line, '\0'); 856 if (!num_port && port) 857 sp = getservbyport((int)port, proto); 858 if (sp || port == 0) 859 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 860 else 861 sprintf(cp, "%d ", ntohs((u_short)port)); 862 width = (Aflag && !Wflag) ? 18 : 22; 863 if (Wflag) 864 printf("%-*s ", width, line); 865 else 866 printf("%-*.*s ", width, width, line); 867 } 868 869 /* 870 * Construct an Internet address representation. 871 * If numeric_addr has been supplied, give 872 * numeric value, otherwise try for symbolic name. 873 */ 874 char * 875 inetname(struct in_addr *inp) 876 { 877 char *cp; 878 static char line[MAXHOSTNAMELEN]; 879 struct hostent *hp; 880 struct netent *np; 881 882 cp = 0; 883 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 884 int net = inet_netof(*inp); 885 int lna = inet_lnaof(*inp); 886 887 if (lna == INADDR_ANY) { 888 np = getnetbyaddr(net, AF_INET); 889 if (np) 890 cp = np->n_name; 891 } 892 if (cp == 0) { 893 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 894 if (hp) { 895 cp = hp->h_name; 896 trimdomain(cp, strlen(cp)); 897 } 898 } 899 } 900 if (inp->s_addr == INADDR_ANY) 901 strcpy(line, "*"); 902 else if (cp) { 903 strncpy(line, cp, sizeof(line) - 1); 904 line[sizeof(line) - 1] = '\0'; 905 } else { 906 inp->s_addr = ntohl(inp->s_addr); 907 #define C(x) ((u_int)((x) & 0xff)) 908 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 909 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 910 } 911 return (line); 912 } 913