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/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 #undef p 437 #undef p1a 438 #undef p2 439 #undef p2a 440 #undef p3 441 } 442 443 /* 444 * Dump UDP statistics structure. 445 */ 446 void 447 udp_stats(u_long off __unused, char *name, int af __unused) 448 { 449 struct udpstat udpstat, zerostat; 450 size_t len = sizeof udpstat; 451 u_long delivered; 452 453 if (zflag) 454 memset(&zerostat, 0, len); 455 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 456 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 457 warn("sysctl: net.inet.udp.stats"); 458 return; 459 } 460 461 #ifdef INET6 462 if (udp_done != 0) 463 return; 464 else 465 udp_done = 1; 466 #endif 467 468 printf("%s:\n", name); 469 #define p(f, m) if (udpstat.f || sflag <= 1) \ 470 printf(m, udpstat.f, plural(udpstat.f)) 471 #define p1a(f, m) if (udpstat.f || sflag <= 1) \ 472 printf(m, udpstat.f) 473 p(udps_ipackets, "\t%lu datagram%s received\n"); 474 p1a(udps_hdrops, "\t%lu with incomplete header\n"); 475 p1a(udps_badlen, "\t%lu with bad data length field\n"); 476 p1a(udps_badsum, "\t%lu with bad checksum\n"); 477 p1a(udps_nosum, "\t%lu with no checksum\n"); 478 p1a(udps_noport, "\t%lu dropped due to no socket\n"); 479 p(udps_noportbcast, 480 "\t%lu broadcast/multicast datagram%s dropped due to no socket\n"); 481 p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 482 p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n"); 483 delivered = udpstat.udps_ipackets - 484 udpstat.udps_hdrops - 485 udpstat.udps_badlen - 486 udpstat.udps_badsum - 487 udpstat.udps_noport - 488 udpstat.udps_noportbcast - 489 udpstat.udps_fullsock; 490 if (delivered || sflag <= 1) 491 printf("\t%lu delivered\n", delivered); 492 p(udps_opackets, "\t%lu datagram%s output\n"); 493 #undef p 494 #undef p1a 495 } 496 497 /* 498 * Dump IP statistics structure. 499 */ 500 void 501 ip_stats(u_long off __unused, char *name, int af __unused) 502 { 503 struct ipstat ipstat, zerostat; 504 size_t len = sizeof ipstat; 505 506 if (zflag) 507 memset(&zerostat, 0, len); 508 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 509 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 510 warn("sysctl: net.inet.ip.stats"); 511 return; 512 } 513 514 printf("%s:\n", name); 515 516 #define p(f, m) if (ipstat.f || sflag <= 1) \ 517 printf(m, ipstat.f, plural(ipstat.f)) 518 #define p1a(f, m) if (ipstat.f || sflag <= 1) \ 519 printf(m, ipstat.f) 520 521 p(ips_total, "\t%lu total packet%s received\n"); 522 p(ips_badsum, "\t%lu bad header checksum%s\n"); 523 p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); 524 p1a(ips_tooshort, "\t%lu with data size < data length\n"); 525 p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); 526 p1a(ips_badhlen, "\t%lu with header length < data size\n"); 527 p1a(ips_badlen, "\t%lu with data length < header length\n"); 528 p1a(ips_badoptions, "\t%lu with bad options\n"); 529 p1a(ips_badvers, "\t%lu with incorrect version number\n"); 530 p(ips_fragments, "\t%lu fragment%s received\n"); 531 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 532 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 533 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 534 p(ips_delivered, "\t%lu packet%s for this host\n"); 535 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 536 p(ips_forward, "\t%lu packet%s forwarded"); 537 p(ips_fastforward, " (%lu packet%s fast forwarded)"); 538 if (ipstat.ips_forward || sflag <= 1) 539 putchar('\n'); 540 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 541 p(ips_notmember, 542 "\t%lu packet%s received for unknown multicast group\n"); 543 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 544 p(ips_localout, "\t%lu packet%s sent from this host\n"); 545 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 546 p(ips_odropped, 547 "\t%lu output packet%s dropped due to no bufs, etc.\n"); 548 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 549 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 550 p(ips_ofragments, "\t%lu fragment%s created\n"); 551 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 552 p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); 553 p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); 554 #undef p 555 #undef p1a 556 } 557 558 static char *icmpnames[] = { 559 "echo reply", 560 "#1", 561 "#2", 562 "destination unreachable", 563 "source quench", 564 "routing redirect", 565 "#6", 566 "#7", 567 "echo", 568 "router advertisement", 569 "router solicitation", 570 "time exceeded", 571 "parameter problem", 572 "time stamp", 573 "time stamp reply", 574 "information request", 575 "information request reply", 576 "address mask request", 577 "address mask reply", 578 }; 579 580 /* 581 * Dump ICMP statistics. 582 */ 583 void 584 icmp_stats(u_long off __unused, char *name, int af __unused) 585 { 586 struct icmpstat icmpstat, zerostat; 587 int i, first; 588 int mib[4]; /* CTL_NET + PF_INET + IPPROTO_ICMP + req */ 589 size_t len; 590 591 mib[0] = CTL_NET; 592 mib[1] = PF_INET; 593 mib[2] = IPPROTO_ICMP; 594 mib[3] = ICMPCTL_STATS; 595 596 len = sizeof icmpstat; 597 if (zflag) 598 memset(&zerostat, 0, len); 599 if (sysctl(mib, 4, &icmpstat, &len, 600 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 601 warn("sysctl: net.inet.icmp.stats"); 602 return; 603 } 604 605 printf("%s:\n", name); 606 607 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 608 printf(m, icmpstat.f, plural(icmpstat.f)) 609 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \ 610 printf(m, icmpstat.f) 611 612 p(icps_error, "\t%lu call%s to icmp_error\n"); 613 p(icps_oldicmp, 614 "\t%lu error%s not generated 'cuz old message was icmp\n"); 615 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 616 if (icmpstat.icps_outhist[i] != 0) { 617 if (first) { 618 printf("\tOutput histogram:\n"); 619 first = 0; 620 } 621 printf("\t\t%s: %lu\n", icmpnames[i], 622 icmpstat.icps_outhist[i]); 623 } 624 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 625 p(icps_tooshort, "\t%lu message%s < minimum length\n"); 626 p(icps_checksum, "\t%lu bad checksum%s\n"); 627 p(icps_badlen, "\t%lu message%s with bad length\n"); 628 p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); 629 p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n"); 630 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 631 if (icmpstat.icps_inhist[i] != 0) { 632 if (first) { 633 printf("\tInput histogram:\n"); 634 first = 0; 635 } 636 printf("\t\t%s: %lu\n", icmpnames[i], 637 icmpstat.icps_inhist[i]); 638 } 639 p(icps_reflect, "\t%lu message response%s generated\n"); 640 #undef p 641 #undef p1a 642 mib[3] = ICMPCTL_MASKREPL; 643 len = sizeof i; 644 if (sysctl(mib, 4, &i, &len, (void *)0, 0) < 0) 645 return; 646 printf("\tICMP address mask responses are %sabled\n", 647 i ? "en" : "dis"); 648 } 649 650 /* 651 * Dump IGMP statistics structure. 652 */ 653 void 654 igmp_stats(u_long off __unused, char *name, int af __unused) 655 { 656 struct igmpstat igmpstat, zerostat; 657 size_t len = sizeof igmpstat; 658 659 if (zflag) 660 memset(&zerostat, 0, len); 661 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 662 zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { 663 warn("sysctl: net.inet.igmp.stats"); 664 return; 665 } 666 667 printf("%s:\n", name); 668 669 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 670 printf(m, igmpstat.f, plural(igmpstat.f)) 671 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 672 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 673 p(igps_rcv_total, "\t%u message%s received\n"); 674 p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n"); 675 p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n"); 676 py(igps_rcv_queries, "\t%u membership quer%s received\n"); 677 py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n"); 678 p(igps_rcv_reports, "\t%u membership report%s received\n"); 679 p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n"); 680 p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n"); 681 p(igps_snd_reports, "\t%u membership report%s sent\n"); 682 #undef p 683 #undef py 684 } 685 686 /* 687 * Pretty print an Internet address (net address + port). 688 */ 689 void 690 inetprint(struct in_addr *in, int port, char *proto, int numeric_port) 691 { 692 struct servent *sp = 0; 693 char line[80], *cp; 694 int width; 695 696 if (Wflag) 697 sprintf(line, "%s.", inetname(in)); 698 else 699 sprintf(line, "%.*s.", (Aflag && !numeric_port) ? 12 : 16, inetname(in)); 700 cp = index(line, '\0'); 701 if (!numeric_port && port) 702 sp = getservbyport((int)port, proto); 703 if (sp || port == 0) 704 sprintf(cp, "%.15s ", sp ? sp->s_name : "*"); 705 else 706 sprintf(cp, "%d ", ntohs((u_short)port)); 707 width = (Aflag && !Wflag) ? 18 : 22; 708 if (Wflag) 709 printf("%-*s ", width, line); 710 else 711 printf("%-*.*s ", width, width, line); 712 } 713 714 /* 715 * Construct an Internet address representation. 716 * If numeric_addr has been supplied, give 717 * numeric value, otherwise try for symbolic name. 718 */ 719 char * 720 inetname(struct in_addr *inp) 721 { 722 register char *cp; 723 static char line[MAXHOSTNAMELEN]; 724 struct hostent *hp; 725 struct netent *np; 726 727 cp = 0; 728 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 729 int net = inet_netof(*inp); 730 int lna = inet_lnaof(*inp); 731 732 if (lna == INADDR_ANY) { 733 np = getnetbyaddr(net, AF_INET); 734 if (np) 735 cp = np->n_name; 736 } 737 if (cp == 0) { 738 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 739 if (hp) { 740 cp = hp->h_name; 741 trimdomain(cp, strlen(cp)); 742 } 743 } 744 } 745 if (inp->s_addr == INADDR_ANY) 746 strcpy(line, "*"); 747 else if (cp) { 748 strncpy(line, cp, sizeof(line) - 1); 749 line[sizeof(line) - 1] = '\0'; 750 } else { 751 inp->s_addr = ntohl(inp->s_addr); 752 #define C(x) ((u_int)((x) & 0xff)) 753 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 754 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 755 } 756 return (line); 757 } 758