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 #ifndef lint 35 /* 36 static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95"; 37 */ 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/queue.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/sysctl.h> 47 #include <sys/protosw.h> 48 49 #include <net/route.h> 50 #include <netinet/in.h> 51 #include <netinet/in_systm.h> 52 #include <netinet/ip.h> 53 #ifdef INET6 54 #include <netinet/ip6.h> 55 #endif /* INET6 */ 56 #include <netinet/in_pcb.h> 57 #include <netinet/ip_icmp.h> 58 #include <netinet/icmp_var.h> 59 #include <netinet/igmp_var.h> 60 #include <netinet/ip_var.h> 61 #include <netinet/pim_var.h> 62 #include <netinet/tcp.h> 63 #include <netinet/tcpip.h> 64 #include <netinet/tcp_seq.h> 65 #define TCPSTATES 66 #include <netinet/tcp_fsm.h> 67 #include <netinet/tcp_timer.h> 68 #include <netinet/tcp_var.h> 69 #include <netinet/tcp_debug.h> 70 #include <netinet/udp.h> 71 #include <netinet/udp_var.h> 72 73 #include <arpa/inet.h> 74 #include <err.h> 75 #include <errno.h> 76 #include <libutil.h> 77 #include <netdb.h> 78 #include <stdio.h> 79 #include <stdlib.h> 80 #include <string.h> 81 #include <unistd.h> 82 #include "netstat.h" 83 84 char *inetname (struct in_addr *); 85 void inetprint (struct in_addr *, int, const char *, int); 86 #ifdef INET6 87 static int udp_done, tcp_done; 88 #endif /* INET6 */ 89 90 /* 91 * Print a summary of connections related to an Internet 92 * protocol. For TCP, also give state of connection. 93 * Listening processes (aflag) are suppressed unless the 94 * -a (all) flag is specified. 95 */ 96 void 97 protopr(u_long proto, /* for sysctl version we pass proto # */ 98 const char *name, int af1) 99 { 100 int istcp; 101 static int first = 1; 102 char *buf; 103 const char *mibvar, *vchar; 104 struct tcpcb *tp = NULL; 105 struct inpcb *inp; 106 struct xinpgen *xig, *oxig; 107 struct xsocket *so; 108 size_t len; 109 110 istcp = 0; 111 switch (proto) { 112 case IPPROTO_TCP: 113 #ifdef INET6 114 if (tcp_done != 0) 115 return; 116 else 117 tcp_done = 1; 118 #endif 119 istcp = 1; 120 mibvar = "net.inet.tcp.pcblist"; 121 break; 122 case IPPROTO_UDP: 123 #ifdef INET6 124 if (udp_done != 0) 125 return; 126 else 127 udp_done = 1; 128 #endif 129 mibvar = "net.inet.udp.pcblist"; 130 break; 131 case IPPROTO_DIVERT: 132 mibvar = "net.inet.divert.pcblist"; 133 break; 134 default: 135 mibvar = "net.inet.raw.pcblist"; 136 break; 137 } 138 len = 0; 139 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 140 if (errno != ENOENT) 141 warn("sysctl: %s", mibvar); 142 return; 143 } 144 if ((buf = malloc(len)) == 0) { 145 warn("malloc %lu bytes", (u_long)len); 146 return; 147 } 148 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 149 warn("sysctl: %s", mibvar); 150 free(buf); 151 return; 152 } 153 154 oxig = xig = (struct xinpgen *)buf; 155 for (xig = (struct xinpgen *)((char *)xig + xig->xig_len); 156 xig->xig_len > sizeof(struct xinpgen); 157 xig = (struct xinpgen *)((char *)xig + xig->xig_len)) { 158 if (istcp) { 159 tp = &((struct xtcpcb *)xig)->xt_tp; 160 inp = &((struct xtcpcb *)xig)->xt_inp; 161 so = &((struct xtcpcb *)xig)->xt_socket; 162 } else { 163 inp = &((struct xinpcb *)xig)->xi_inp; 164 so = &((struct xinpcb *)xig)->xi_socket; 165 } 166 167 /* Ignore sockets for protocols other than the desired one. */ 168 if (so->xso_protocol != (int)proto) 169 continue; 170 171 /* Ignore PCBs which were freed during copyout. */ 172 if (inp->inp_gencnt > oxig->xig_gen) 173 continue; 174 175 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) 176 #ifdef INET6 177 || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) 178 #endif /* INET6 */ 179 || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0 180 #ifdef INET6 181 && (inp->inp_vflag & 182 INP_IPV6) == 0 183 #endif /* INET6 */ 184 )) 185 ) 186 continue; 187 if (!aflag && 188 ( 189 (af1 == AF_INET && 190 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 191 #ifdef INET6 192 || (af1 == AF_INET6 && 193 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 194 #endif /* INET6 */ 195 || (af1 == AF_UNSPEC && 196 (((inp->inp_vflag & INP_IPV4) != 0 && 197 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 198 #ifdef INET6 199 || ((inp->inp_vflag & INP_IPV6) != 0 && 200 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 201 #endif 202 )) 203 )) 204 continue; 205 206 if (first) { 207 if (!Lflag) { 208 printf("Active Internet connections"); 209 if (aflag) 210 printf(" (including servers)"); 211 } else 212 printf( 213 "Current listen queue sizes (qlen/incqlen/maxqlen)"); 214 putchar('\n'); 215 if (Aflag) 216 printf("%-8.8s ", "Socket"); 217 if (Lflag) 218 printf("%-5.5s %-14.14s %-22.22s\n", 219 "Proto", "Listen", "Local Address"); 220 else 221 printf((Aflag && !Wflag) ? 222 "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" : 223 "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n", 224 "Proto", "Recv-Q", "Send-Q", 225 "Local Address", "Foreign Address", 226 "(state)"); 227 first = 0; 228 } 229 if (Lflag && so->so_qlimit == 0) 230 continue; 231 if (Aflag) { 232 if (istcp) 233 printf("%8lx ", (u_long)inp->inp_ppcb); 234 else 235 printf("%8lx ", (u_long)so->so_pcb); 236 } 237 #ifdef INET6 238 if ((inp->inp_vflag & INP_IPV6) != 0) 239 vchar = ((inp->inp_vflag & INP_IPV4) != 0) 240 ? "46" : "6 "; 241 else 242 #endif 243 vchar = ((inp->inp_vflag & INP_IPV4) != 0) 244 ? "4 " : " "; 245 printf("%-3.3s%-2.2s ", name, vchar); 246 if (Lflag) { 247 char buf1[15]; 248 249 snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, 250 so->so_incqlen, so->so_qlimit); 251 printf("%-14.14s ", buf1); 252 } else { 253 printf("%6u %6u ", 254 so->so_rcv.sb_cc, 255 so->so_snd.sb_cc); 256 } 257 if (numeric_port) { 258 if (inp->inp_vflag & INP_IPV4) { 259 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 260 name, 1); 261 if (!Lflag) 262 inetprint(&inp->inp_faddr, 263 (int)inp->inp_fport, name, 1); 264 } 265 #ifdef INET6 266 else if (inp->inp_vflag & INP_IPV6) { 267 inet6print(&inp->in6p_laddr, 268 (int)inp->inp_lport, name, 1); 269 if (!Lflag) 270 inet6print(&inp->in6p_faddr, 271 (int)inp->inp_fport, name, 1); 272 } /* else nothing printed now */ 273 #endif /* INET6 */ 274 } else if (inp->inp_flags & INP_ANONPORT) { 275 if (inp->inp_vflag & INP_IPV4) { 276 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 277 name, 1); 278 if (!Lflag) 279 inetprint(&inp->inp_faddr, 280 (int)inp->inp_fport, name, 0); 281 } 282 #ifdef INET6 283 else if (inp->inp_vflag & INP_IPV6) { 284 inet6print(&inp->in6p_laddr, 285 (int)inp->inp_lport, name, 1); 286 if (!Lflag) 287 inet6print(&inp->in6p_faddr, 288 (int)inp->inp_fport, name, 0); 289 } /* else nothing printed now */ 290 #endif /* INET6 */ 291 } else { 292 if (inp->inp_vflag & INP_IPV4) { 293 inetprint(&inp->inp_laddr, (int)inp->inp_lport, 294 name, 0); 295 if (!Lflag) 296 inetprint(&inp->inp_faddr, 297 (int)inp->inp_fport, name, 298 inp->inp_lport != 299 inp->inp_fport); 300 } 301 #ifdef INET6 302 else if (inp->inp_vflag & INP_IPV6) { 303 inet6print(&inp->in6p_laddr, 304 (int)inp->inp_lport, name, 0); 305 if (!Lflag) 306 inet6print(&inp->in6p_faddr, 307 (int)inp->inp_fport, name, 308 inp->inp_lport != 309 inp->inp_fport); 310 } /* else nothing printed now */ 311 #endif /* INET6 */ 312 } 313 if (istcp && !Lflag) { 314 if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) 315 printf("%d", tp->t_state); 316 else { 317 printf("%s", tcpstates[tp->t_state]); 318 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) 319 /* Show T/TCP `hidden state' */ 320 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) 321 putchar('*'); 322 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ 323 } 324 } 325 putchar('\n'); 326 } 327 if (xig != oxig && xig->xig_gen != oxig->xig_gen) { 328 if (oxig->xig_count > xig->xig_count) { 329 printf("Some %s sockets may have been deleted.\n", 330 name); 331 } else if (oxig->xig_count < xig->xig_count) { 332 printf("Some %s sockets may have been created.\n", 333 name); 334 } else { 335 printf("Some %s sockets may have been created or deleted", 336 name); 337 } 338 } 339 free(buf); 340 } 341 342 /* 343 * Dump TCP statistics structure. 344 */ 345 void 346 tcp_stats(u_long off __unused, const char *name, int af1 __unused) 347 { 348 struct tcpstat tcpstat, zerostat; 349 size_t len = sizeof tcpstat; 350 351 if (zflag) 352 memset(&zerostat, 0, len); 353 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 354 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 355 warn("sysctl: net.inet.tcp.stats"); 356 return; 357 } 358 359 #ifdef INET6 360 if (tcp_done != 0) 361 return; 362 else 363 tcp_done = 1; 364 #endif 365 366 printf ("%s:\n", name); 367 368 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 369 printf(m, tcpstat.f, plural(tcpstat.f)) 370 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \ 371 printf(m, tcpstat.f) 372 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 373 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 374 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 375 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 376 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 377 printf(m, tcpstat.f, plurales(tcpstat.f)) 378 379 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 380 p2(tcps_sndpack,tcps_sndbyte, 381 "\t\t%lu data packet%s (%lu byte%s)\n"); 382 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 383 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 384 p(tcps_sndrexmitbad, 385 "\t\t%lu data packet%s unnecessarily retransmitted\n"); 386 p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 387 p2a(tcps_sndacks, tcps_delack, 388 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 389 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 390 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 391 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 392 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 393 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 394 p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%lu ack%s (for %lu byte%s)\n"); 395 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 396 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 397 p2(tcps_rcvpack, tcps_rcvbyte, 398 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 399 p2(tcps_rcvduppack, tcps_rcvdupbyte, 400 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 401 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 402 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 403 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 404 p2(tcps_rcvoopack, tcps_rcvoobyte, 405 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 406 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 407 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 408 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 409 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 410 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 411 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 412 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 413 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 414 p(tcps_connattempt, "\t%lu connection request%s\n"); 415 p(tcps_accepts, "\t%lu connection accept%s\n"); 416 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 417 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 418 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 419 p2(tcps_closed, tcps_drops, 420 "\t%lu connection%s closed (including %lu drop%s)\n"); 421 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 422 p(tcps_cachedrttvar, 423 "\t\t%lu connection%s updated cached RTT variance on close\n"); 424 p(tcps_cachedssthresh, 425 "\t\t%lu connection%s updated cached ssthresh on close\n"); 426 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 427 p2(tcps_rttupdated, tcps_segstimed, 428 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 429 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 430 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 431 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 432 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 433 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 434 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 435 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 436 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 437 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 438 439 p(tcps_sc_added, "\t%lu syncache entrie%s added\n"); 440 p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 441 p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 442 p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); 443 p1a(tcps_sc_completed, "\t\t%lu completed\n"); 444 p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 445 p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 446 p1a(tcps_sc_reset, "\t\t%lu reset\n"); 447 p1a(tcps_sc_stale, "\t\t%lu stale\n"); 448 p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); 449 p1a(tcps_sc_badack, "\t\t%lu badack\n"); 450 p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); 451 p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); 452 p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); 453 p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); 454 #undef p 455 #undef p1a 456 #undef p2 457 #undef p2a 458 #undef p3 459 } 460 461 /* 462 * Dump UDP statistics structure. 463 */ 464 void 465 udp_stats(u_long off __unused, const char *name, int af1 __unused) 466 { 467 struct udpstat udpstat, zerostat; 468 size_t len = sizeof udpstat; 469 u_long delivered; 470 471 if (zflag) 472 memset(&zerostat, 0, len); 473 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 474 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 475 warn("sysctl: net.inet.udp.stats"); 476 return; 477 } 478 479 #ifdef INET6 480 if (udp_done != 0) 481 return; 482 else 483 udp_done = 1; 484 #endif 485 486 printf("%s:\n", name); 487 #define p(f, m) if (udpstat.f || sflag <= 1) \ 488 printf(m, udpstat.f, plural(udpstat.f)) 489 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 490 printf(m, udpstat.f) 491 p(udps_ipackets, "\t%lu datagram%s received\n"); 492 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 493 p1a(udps_badlen, "\t%lu with bad data length field\n"); 494 p1a(udps_badsum, "\t%lu with bad checksum\n"); 495 p1a(udps_nosum, "\t%lu with no checksum\n"); 496 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 497 p(udps_noportbcast, 498 "\t%lu broadcast/multicast datagram%s dropped due to no socket\n"); 499 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 500 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 501 delivered = udpstat.udps_ipackets - 502 udpstat.udps_hdrops - 503 udpstat.udps_badlen - 504 udpstat.udps_badsum - 505 udpstat.udps_noport - 506 udpstat.udps_noportbcast - 507 udpstat.udps_fullsock; 508 if (delivered || sflag <= 1) 509 printf("\t%lu delivered\n", delivered); 510 p(udps_opackets, "\t%lu datagram%s output\n"); 511 #undef p 512 #undef p1a 513 } 514 515 /* 516 * Dump IP statistics structure. 517 */ 518 void 519 ip_stats(u_long off __unused, const char *name, int af1 __unused) 520 { 521 struct ipstat ipstat, zerostat; 522 size_t len = sizeof ipstat; 523 524 if (zflag) 525 memset(&zerostat, 0, len); 526 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 527 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 528 warn("sysctl: net.inet.ip.stats"); 529 return; 530 } 531 532 printf("%s:\n", name); 533 534 #define p(f, m) if (ipstat.f || sflag <= 1) \ 535 printf(m, ipstat.f, plural(ipstat.f)) 536 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 537 printf(m, ipstat.f) 538 539 p(ips_total, "\t%lu total packet%s received\n"); 540 p(ips_badsum, "\t%lu bad header checksum%s\n"); 541 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 542 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 543 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 544 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 545 p1a(ips_badlen, "\t%lu with data length < header length\n"); 546 p1a(ips_badoptions, "\t%lu with bad options\n"); 547 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 548 p(ips_fragments, "\t%lu fragment%s received\n"); 549 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 550 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 551 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 552 p(ips_delivered, "\t%lu packet%s for this host\n"); 553 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 554 p(ips_forward, "\t%lu packet%s forwarded"); 555 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 556 if (ipstat.ips_forward || sflag <= 1) 557 putchar('\n'); 558 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 559 p(ips_notmember, 560 "\t%lu packet%s received for unknown multicast group\n"); 561 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 562 p(ips_localout, "\t%lu packet%s sent from this host\n"); 563 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 564 p(ips_odropped, 565 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 566 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 567 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 568 p(ips_ofragments, "\t%lu fragment%s created\n"); 569 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 570 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 571 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 572 #undef p 573 #undef p1a 574 } 575 576 static const char *icmpnames[] = { 577 "echo reply", 578 "#1", 579 "#2", 580 "destination unreachable", 581 "source quench", 582 "routing redirect", 583 "#6", 584 "#7", 585 "echo", 586 "router advertisement", 587 "router solicitation", 588 "time exceeded", 589 "parameter problem", 590 "time stamp", 591 "time stamp reply", 592 "information request", 593 "information request reply", 594 "address mask request", 595 "address mask reply", 596 }; 597 598 /* 599 * Dump ICMP statistics. 600 */ 601 void 602 icmp_stats(u_long off __unused, const char *name, int af1 __unused) 603 { 604 struct icmpstat icmpstat, zerostat; 605 int i, first; 606 int mib[4]; /* CTL_NET + PF_INET + IPPROTO_ICMP + req */ 607 size_t len; 608 609 mib[0] = CTL_NET; 610 mib[1] = PF_INET; 611 mib[2] = IPPROTO_ICMP; 612 mib[3] = ICMPCTL_STATS; 613 614 len = sizeof icmpstat; 615 if (zflag) 616 memset(&zerostat, 0, len); 617 if (sysctl(mib, 4, &icmpstat, &len, 618 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 619 warn("sysctl: net.inet.icmp.stats"); 620 return; 621 } 622 623 printf("%s:\n", name); 624 625 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 626 printf(m, icmpstat.f, plural(icmpstat.f)) 627 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 628 printf(m, icmpstat.f) 629 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 630 printf(m, icmpstat.f, plurales(icmpstat.f)) 631 632 p(icps_error, "\t%lu call%s to icmp_error\n"); 633 p(icps_oldicmp, 634 "\t%lu error%s not generated in response to an icmp message\n"); 635 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 636 if (icmpstat.icps_outhist[i] != 0) { 637 if (first) { 638 printf("\tOutput histogram:\n"); 639 first = 0; 640 } 641 printf("\t\t%s: %lu\n", icmpnames[i], 642 icmpstat.icps_outhist[i]); 643 } 644 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 645 p(icps_tooshort, "\t%lu message%s < minimum length\n"); 646 p(icps_checksum, "\t%lu bad checksum%s\n"); 647 p(icps_badlen, "\t%lu message%s with bad length\n"); 648 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 649 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 650 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 651 if (icmpstat.icps_inhist[i] != 0) { 652 if (first) { 653 printf("\tInput histogram:\n"); 654 first = 0; 655 } 656 printf("\t\t%s: %lu\n", icmpnames[i], 657 icmpstat.icps_inhist[i]); 658 } 659 p(icps_reflect, "\t%lu message response%s generated\n"); 660 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 661 p(icps_badaddr, "\t%lu no return route%s\n"); 662 #undef p 663 #undef p1a 664 #undef p2 665 mib[3] = ICMPCTL_MASKREPL; 666 len = sizeof i; 667 if (sysctl(mib, 4, &i, &len, (void *)0, 0) < 0) 668 return; 669 printf("\tICMP address mask responses are %sabled\n", 670 i ? "en" : "dis"); 671 } 672 673 /* 674 * Dump IGMP statistics structure. 675 */ 676 void 677 igmp_stats(u_long off __unused, const char *name, int af1 __unused) 678 { 679 struct igmpstat igmpstat, zerostat; 680 size_t len = sizeof igmpstat; 681 682 if (zflag) 683 memset(&zerostat, 0, len); 684 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 685 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 686 warn("sysctl: net.inet.igmp.stats"); 687 return; 688 } 689 690 printf("%s:\n", name); 691 692 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 693 printf(m, igmpstat.f, plural(igmpstat.f)) 694 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 695 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 696 p(igps_rcv_total, "\t%u message%s received\n"); 697 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 698 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 699 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 700 py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n"); 701 p(igps_rcv_reports, "\t%u membership report%s received\n"); 702 p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n"); 703 p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n"); 704 p(igps_snd_reports, "\t%u membership report%s sent\n"); 705 #undef p 706 #undef py 707 } 708 709 /* 710 * Dump PIM statistics structure. 711 */ 712 void 713 pim_stats(u_long off __unused, const char *name, int af1 __unused) 714 { 715 struct pimstat pimstat, zerostat; 716 size_t len = sizeof pimstat; 717 718 if (zflag) 719 memset(&zerostat, 0, len); 720 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, 721 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 722 warn("sysctl: net.inet.pim.stats"); 723 return; 724 } 725 726 printf("%s:\n", name); 727 728 #define p(f, m) if (pimstat.f || sflag <= 1) \ 729 printf(m, pimstat.f, plural(pimstat.f)) 730 #define py(f, m) if (pimstat.f || sflag <= 1) \ 731 printf(m, pimstat.f, pimstat.f != 1 ? "ies" : "y") 732 p(pims_rcv_total_msgs, "\t%llu message%s received\n"); 733 p(pims_rcv_total_bytes, "\t%llu byte%s received\n"); 734 p(pims_rcv_tooshort, "\t%llu message%s received with too few bytes\n"); 735 p(pims_rcv_badsum, "\t%llu message%s received with bad checksum\n"); 736 p(pims_rcv_badversion, "\t%llu message%s received with bad version\n"); 737 p(pims_rcv_registers_msgs, "\t%llu data register message%s received\n"); 738 p(pims_rcv_registers_bytes, "\t%llu data register byte%s received\n"); 739 p(pims_rcv_registers_wrongiif, "\t%llu data register message%s received on wrong iif\n"); 740 p(pims_rcv_badregisters, "\t%llu bad register%s received\n"); 741 p(pims_snd_registers_msgs, "\t%llu data register message%s sent\n"); 742 p(pims_snd_registers_bytes, "\t%llu data register byte%s sent\n"); 743 #undef p 744 #undef py 745 } 746 747 /* 748 * Pretty print an Internet address (net address + port). 749 */ 750 void 751 inetprint(struct in_addr *in, int port, const char *proto, int num_port) 752 { 753 struct servent *sp = 0; 754 char line[80], *cp; 755 int width; 756 757 if (Wflag) 758 sprintf(line, "%s.", inetname(in)); 759 else 760 sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); 761 cp = index(line, '\0'); 762 if (!num_port && port) 763 sp = getservbyport((int)port, proto); 764 if (sp || port == 0) 765 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 766 else 767 sprintf(cp, "%d ", ntohs((u_short)port)); 768 width = (Aflag && !Wflag) ? 18 : 22; 769 if (Wflag) 770 printf("%-*s ", width, line); 771 else 772 printf("%-*.*s ", width, width, line); 773 } 774 775 /* 776 * Construct an Internet address representation. 777 * If numeric_addr has been supplied, give 778 * numeric value, otherwise try for symbolic name. 779 */ 780 char * 781 inetname(struct in_addr *inp) 782 { 783 char *cp; 784 static char line[MAXHOSTNAMELEN]; 785 struct hostent *hp; 786 struct netent *np; 787 788 cp = 0; 789 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 790 int net = inet_netof(*inp); 791 int lna = inet_lnaof(*inp); 792 793 if (lna == INADDR_ANY) { 794 np = getnetbyaddr(net, AF_INET); 795 if (np) 796 cp = np->n_name; 797 } 798 if (cp == 0) { 799 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 800 if (hp) { 801 cp = hp->h_name; 802 trimdomain(cp, strlen(cp)); 803 } 804 } 805 } 806 if (inp->s_addr == INADDR_ANY) 807 strcpy(line, "*"); 808 else if (cp) { 809 strncpy(line, cp, sizeof(line) - 1); 810 line[sizeof(line) - 1] = '\0'; 811 } else { 812 inp->s_addr = ntohl(inp->s_addr); 813 #define C(x) ((u_int)((x) & 0xff)) 814 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 815 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 816 } 817 return (line); 818 } 819