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: src/usr.bin/netstat/inet.c,v 1.37.2.9 2001/12/17 20:03:59 jlemon Exp $"; 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/tcp.h> 62 #include <netinet/tcpip.h> 63 #include <netinet/tcp_seq.h> 64 #define TCPSTATES 65 #include <netinet/tcp_fsm.h> 66 #include <netinet/tcp_timer.h> 67 #include <netinet/tcp_var.h> 68 #include <netinet/tcp_debug.h> 69 #include <netinet/udp.h> 70 #include <netinet/udp_var.h> 71 72 #include <arpa/inet.h> 73 #include <err.h> 74 #include <errno.h> 75 #include <libutil.h> 76 #include <netdb.h> 77 #include <stdio.h> 78 #include <stdlib.h> 79 #include <string.h> 80 #include <unistd.h> 81 #include "netstat.h" 82 83 char *inetname (struct in_addr *); 84 void inetprint (struct in_addr *, int, char *, int); 85 #ifdef INET6 86 extern void inet6print (struct in6_addr *, int, char *, int); 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 char *name, int af) 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 ((af == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) 176 #ifdef INET6 177 || (af == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) 178 #endif /* INET6 */ 179 || (af == 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 (af == AF_INET && 190 inet_lnaof(inp->inp_laddr) == INADDR_ANY) 191 #ifdef INET6 192 || (af == AF_INET6 && 193 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 194 #endif /* INET6 */ 195 || (af == 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 buf[15]; 248 249 snprintf(buf, 15, "%d/%d/%d", so->so_qlen, 250 so->so_incqlen, so->so_qlimit); 251 printf("%-14.14s ", buf); 252 } else { 253 printf("%6ld %6ld ", 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, char *name, int af __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_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); 385 p2a(tcps_sndacks, tcps_delack, 386 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 387 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 388 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 389 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 390 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 391 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 392 p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%lu ack%s (for %lu byte%s)\n"); 393 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 394 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 395 p2(tcps_rcvpack, tcps_rcvbyte, 396 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 397 p2(tcps_rcvduppack, tcps_rcvdupbyte, 398 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 399 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 400 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 401 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 402 p2(tcps_rcvoopack, tcps_rcvoobyte, 403 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 404 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 405 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 406 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 407 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 408 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 409 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 410 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 411 p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 412 p(tcps_connattempt, "\t%lu connection request%s\n"); 413 p(tcps_accepts, "\t%lu connection accept%s\n"); 414 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 415 p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); 416 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 417 p2(tcps_closed, tcps_drops, 418 "\t%lu connection%s closed (including %lu drop%s)\n"); 419 p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); 420 p(tcps_cachedrttvar, 421 "\t\t%lu connection%s updated cached RTT variance on close\n"); 422 p(tcps_cachedssthresh, 423 "\t\t%lu connection%s updated cached ssthresh on close\n"); 424 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 425 p2(tcps_rttupdated, tcps_segstimed, 426 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 427 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 428 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 429 p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); 430 p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); 431 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 432 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 433 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 434 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 435 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 436 437 p(tcps_sc_added, "\t%lu syncache entries added\n"); 438 p(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); 439 p(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); 440 p(tcps_sc_dropped, "\t\t%lu dropped\n"); 441 p(tcps_sc_completed, "\t\t%lu completed\n"); 442 p(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); 443 p(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); 444 p(tcps_sc_reset, "\t\t%lu reset\n"); 445 p(tcps_sc_stale, "\t\t%lu stale\n"); 446 p(tcps_sc_aborted, "\t\t%lu aborted\n"); 447 p(tcps_sc_badack, "\t\t%lu badack\n"); 448 p(tcps_sc_unreach, "\t\t%lu unreach\n"); 449 p(tcps_sc_zonefail, "\t\t%lu zone failures\n"); 450 p(tcps_sc_sendcookie, "\t%lu cookies sent\n"); 451 p(tcps_sc_recvcookie, "\t%lu cookies received\n"); 452 #undef p 453 #undef p1a 454 #undef p2 455 #undef p2a 456 #undef p3 457 } 458 459 /* 460 * Dump UDP statistics structure. 461 */ 462 void 463 udp_stats(u_long off __unused, char *name, int af __unused) 464 { 465 struct udpstat udpstat, zerostat; 466 size_t len = sizeof udpstat; 467 u_long delivered; 468 469 if (zflag) 470 memset(&zerostat, 0, len); 471 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 472 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 473 warn("sysctl: net.inet.udp.stats"); 474 return; 475 } 476 477 #ifdef INET6 478 if (udp_done != 0) 479 return; 480 else 481 udp_done = 1; 482 #endif 483 484 printf("%s:\n", name); 485 #define p(f, m) if (udpstat.f || sflag <= 1) \ 486 printf(m, udpstat.f, plural(udpstat.f)) 487 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 488 printf(m, udpstat.f) 489 p(udps_ipackets, "\t%lu datagram%s received\n"); 490 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 491 p1a(udps_badlen, "\t%lu with bad data length field\n"); 492 p1a(udps_badsum, "\t%lu with bad checksum\n"); 493 p1a(udps_nosum, "\t%lu with no checksum\n"); 494 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 495 p(udps_noportbcast, 496 "\t%lu broadcast/multicast datagram%s dropped due to no socket\n"); 497 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 498 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 499 delivered = udpstat.udps_ipackets - 500 udpstat.udps_hdrops - 501 udpstat.udps_badlen - 502 udpstat.udps_badsum - 503 udpstat.udps_noport - 504 udpstat.udps_noportbcast - 505 udpstat.udps_fullsock; 506 if (delivered || sflag <= 1) 507 printf("\t%lu delivered\n", delivered); 508 p(udps_opackets, "\t%lu datagram%s output\n"); 509 #undef p 510 #undef p1a 511 } 512 513 /* 514 * Dump IP statistics structure. 515 */ 516 void 517 ip_stats(u_long off __unused, char *name, int af __unused) 518 { 519 struct ipstat ipstat, zerostat; 520 size_t len = sizeof ipstat; 521 522 if (zflag) 523 memset(&zerostat, 0, len); 524 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 525 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 526 warn("sysctl: net.inet.ip.stats"); 527 return; 528 } 529 530 printf("%s:\n", name); 531 532 #define p(f, m) if (ipstat.f || sflag <= 1) \ 533 printf(m, ipstat.f, plural(ipstat.f)) 534 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 535 printf(m, ipstat.f) 536 537 p(ips_total, "\t%lu total packet%s received\n"); 538 p(ips_badsum, "\t%lu bad header checksum%s\n"); 539 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 540 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 541 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 542 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 543 p1a(ips_badlen, "\t%lu with data length < header length\n"); 544 p1a(ips_badoptions, "\t%lu with bad options\n"); 545 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 546 p(ips_fragments, "\t%lu fragment%s received\n"); 547 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 548 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 549 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 550 p(ips_delivered, "\t%lu packet%s for this host\n"); 551 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 552 p(ips_forward, "\t%lu packet%s forwarded"); 553 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 554 if (ipstat.ips_forward || sflag <= 1) 555 putchar('\n'); 556 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 557 p(ips_notmember, 558 "\t%lu packet%s received for unknown multicast group\n"); 559 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 560 p(ips_localout, "\t%lu packet%s sent from this host\n"); 561 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 562 p(ips_odropped, 563 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 564 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 565 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 566 p(ips_ofragments, "\t%lu fragment%s created\n"); 567 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 568 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 569 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 570 #undef p 571 #undef p1a 572 } 573 574 static char *icmpnames[] = { 575 "echo reply", 576 "#1", 577 "#2", 578 "destination unreachable", 579 "source quench", 580 "routing redirect", 581 "#6", 582 "#7", 583 "echo", 584 "router advertisement", 585 "router solicitation", 586 "time exceeded", 587 "parameter problem", 588 "time stamp", 589 "time stamp reply", 590 "information request", 591 "information request reply", 592 "address mask request", 593 "address mask reply", 594 }; 595 596 /* 597 * Dump ICMP statistics. 598 */ 599 void 600 icmp_stats(u_long off __unused, char *name, int af __unused) 601 { 602 struct icmpstat icmpstat, zerostat; 603 int i, first; 604 int mib[4]; /* CTL_NET + PF_INET + IPPROTO_ICMP + req */ 605 size_t len; 606 607 mib[0] = CTL_NET; 608 mib[1] = PF_INET; 609 mib[2] = IPPROTO_ICMP; 610 mib[3] = ICMPCTL_STATS; 611 612 len = sizeof icmpstat; 613 if (zflag) 614 memset(&zerostat, 0, len); 615 if (sysctl(mib, 4, &icmpstat, &len, 616 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 617 warn("sysctl: net.inet.icmp.stats"); 618 return; 619 } 620 621 printf("%s:\n", name); 622 623 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 624 printf(m, icmpstat.f, plural(icmpstat.f)) 625 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 626 printf(m, icmpstat.f) 627 #define p2(f, m) if (icmpstat.f || sflag <= 1) \ 628 printf(m, icmpstat.f, plurales(icmpstat.f)) 629 630 p(icps_error, "\t%lu call%s to icmp_error\n"); 631 p(icps_oldicmp, 632 "\t%lu error%s not generated 'cuz old message was icmp\n"); 633 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 634 if (icmpstat.icps_outhist[i] != 0) { 635 if (first) { 636 printf("\tOutput histogram:\n"); 637 first = 0; 638 } 639 printf("\t\t%s: %lu\n", icmpnames[i], 640 icmpstat.icps_outhist[i]); 641 } 642 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 643 p(icps_tooshort, "\t%lu message%s < minimum length\n"); 644 p(icps_checksum, "\t%lu bad checksum%s\n"); 645 p(icps_badlen, "\t%lu message%s with bad length\n"); 646 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 647 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 648 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 649 if (icmpstat.icps_inhist[i] != 0) { 650 if (first) { 651 printf("\tInput histogram:\n"); 652 first = 0; 653 } 654 printf("\t\t%s: %lu\n", icmpnames[i], 655 icmpstat.icps_inhist[i]); 656 } 657 p(icps_reflect, "\t%lu message response%s generated\n"); 658 p2(icps_badaddr, "\t%lu invalid return address%s\n"); 659 p(icps_badaddr, "\t%lu no return route%s\n"); 660 #undef p 661 #undef p1a 662 #undef p2 663 mib[3] = ICMPCTL_MASKREPL; 664 len = sizeof i; 665 if (sysctl(mib, 4, &i, &len, (void *)0, 0) < 0) 666 return; 667 printf("\tICMP address mask responses are %sabled\n", 668 i ? "en" : "dis"); 669 } 670 671 /* 672 * Dump IGMP statistics structure. 673 */ 674 void 675 igmp_stats(u_long off __unused, char *name, int af __unused) 676 { 677 struct igmpstat igmpstat, zerostat; 678 size_t len = sizeof igmpstat; 679 680 if (zflag) 681 memset(&zerostat, 0, len); 682 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 683 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 684 warn("sysctl: net.inet.igmp.stats"); 685 return; 686 } 687 688 printf("%s:\n", name); 689 690 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 691 printf(m, igmpstat.f, plural(igmpstat.f)) 692 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 693 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 694 p(igps_rcv_total, "\t%u message%s received\n"); 695 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 696 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 697 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 698 py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n"); 699 p(igps_rcv_reports, "\t%u membership report%s received\n"); 700 p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n"); 701 p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n"); 702 p(igps_snd_reports, "\t%u membership report%s sent\n"); 703 #undef p 704 #undef py 705 } 706 707 /* 708 * Pretty print an Internet address (net address + port). 709 */ 710 void 711 inetprint(struct in_addr *in, int port, char *proto, int numeric_port) 712 { 713 struct servent *sp = 0; 714 char line[80], *cp; 715 int width; 716 717 if (Wflag) 718 sprintf(line, "%s.", inetname(in)); 719 else 720 sprintf(line, "%.*s.", (Aflag && !numeric_port) ? 12 : 16, inetname(in)); 721 cp = index(line, '\0'); 722 if (!numeric_port && port) 723 sp = getservbyport((int)port, proto); 724 if (sp || port == 0) 725 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 726 else 727 sprintf(cp, "%d ", ntohs((u_short)port)); 728 width = (Aflag && !Wflag) ? 18 : 22; 729 if (Wflag) 730 printf("%-*s ", width, line); 731 else 732 printf("%-*.*s ", width, width, line); 733 } 734 735 /* 736 * Construct an Internet address representation. 737 * If numeric_addr has been supplied, give 738 * numeric value, otherwise try for symbolic name. 739 */ 740 char * 741 inetname(struct in_addr *inp) 742 { 743 register char *cp; 744 static char line[MAXHOSTNAMELEN]; 745 struct hostent *hp; 746 struct netent *np; 747 748 cp = 0; 749 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 750 int net = inet_netof(*inp); 751 int lna = inet_lnaof(*inp); 752 753 if (lna == INADDR_ANY) { 754 np = getnetbyaddr(net, AF_INET); 755 if (np) 756 cp = np->n_name; 757 } 758 if (cp == 0) { 759 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 760 if (hp) { 761 cp = hp->h_name; 762 trimdomain(cp, strlen(cp)); 763 } 764 } 765 } 766 if (inp->s_addr == INADDR_ANY) 767 strcpy(line, "*"); 768 else if (cp) { 769 strncpy(line, cp, sizeof(line) - 1); 770 line[sizeof(line) - 1] = '\0'; 771 } else { 772 inp->s_addr = ntohl(inp->s_addr); 773 #define C(x) ((u_int)((x) & 0xff)) 774 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 775 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 776 } 777 return (line); 778 } 779