1 /* $NetBSD: inet.c,v 1.40 2000/07/03 05:02:38 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94"; 40 #else 41 __RCSID("$NetBSD: inet.c,v 1.40 2000/07/03 05:02:38 enami Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/queue.h> 47 #include <sys/socket.h> 48 #include <sys/socketvar.h> 49 #include <sys/mbuf.h> 50 #include <sys/protosw.h> 51 52 #include <net/route.h> 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #include <netinet/in_pcb.h> 57 #include <netinet/ip_icmp.h> 58 59 #ifdef INET6 60 #include <netinet/ip6.h> 61 #endif 62 63 #include <netinet/icmp_var.h> 64 #include <netinet/igmp_var.h> 65 #include <netinet/ip_var.h> 66 #include <netinet/tcp.h> 67 #include <netinet/tcpip.h> 68 #include <netinet/tcp_seq.h> 69 #define TCPSTATES 70 #include <netinet/tcp_fsm.h> 71 #define TCPTIMERS 72 #include <netinet/tcp_timer.h> 73 #include <netinet/tcp_var.h> 74 #include <netinet/tcp_debug.h> 75 #include <netinet/udp.h> 76 #include <netinet/udp_var.h> 77 78 #include <arpa/inet.h> 79 #include <netdb.h> 80 #include <stdio.h> 81 #include <string.h> 82 #include <unistd.h> 83 #include "netstat.h" 84 85 struct inpcb inpcb; 86 struct tcpcb tcpcb; 87 struct socket sockb; 88 89 char *inetname __P((struct in_addr *)); 90 void inetprint __P((struct in_addr *, u_int16_t, const char *, int)); 91 92 /* 93 * Print a summary of connections related to an Internet 94 * protocol. For TCP, also give state of connection. 95 * Listening processes (aflag) are suppressed unless the 96 * -a (all) flag is specified. 97 */ 98 static int width; 99 100 void 101 protopr(off, name) 102 u_long off; 103 char *name; 104 { 105 struct inpcbtable table; 106 struct inpcb *head, *next, *prev; 107 struct inpcb inpcb; 108 int istcp, compact; 109 static int first = 1; 110 static char *shorttcpstates[] = { 111 "CLOSED", "LISTEN", "SYNSEN", "SYSRCV", 112 "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG", 113 "LASTAK", "FWAIT2", "TMWAIT", 114 }; 115 116 if (off == 0) 117 return; 118 istcp = strcmp(name, "tcp") == 0; 119 kread(off, (char *)&table, sizeof table); 120 prev = head = 121 (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; 122 next = table.inpt_queue.cqh_first; 123 124 compact = 0; 125 if (Aflag) { 126 if (!nflag) 127 width = 18; 128 else { 129 width = 21; 130 compact = 1; 131 } 132 } else 133 width = 22; 134 while (next != head) { 135 kread((u_long)next, (char *)&inpcb, sizeof inpcb); 136 if (inpcb.inp_queue.cqe_prev != prev) { 137 printf("???\n"); 138 break; 139 } 140 prev = next; 141 next = inpcb.inp_queue.cqe_next; 142 143 if (!aflag && 144 inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) 145 continue; 146 kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb)); 147 if (istcp) { 148 kread((u_long)inpcb.inp_ppcb, 149 (char *)&tcpcb, sizeof (tcpcb)); 150 } 151 if (first) { 152 printf("Active Internet connections"); 153 if (aflag) 154 printf(" (including servers)"); 155 putchar('\n'); 156 if (Aflag) 157 printf("%-8.8s ", "PCB"); 158 printf("%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n", 159 "Proto", "Recv-Q", "Send-Q", 160 compact ? "" : " ", 161 width, width, "Local Address", 162 width, width, "Foreign Address", "State"); 163 first = 0; 164 } 165 if (Aflag) { 166 if (istcp) 167 printf("%8lx ", (u_long) inpcb.inp_ppcb); 168 else 169 printf("%8lx ", (u_long) prev); 170 } 171 printf("%-5.5s %6ld %6ld%s", name, sockb.so_rcv.sb_cc, 172 sockb.so_snd.sb_cc, compact ? "" : " "); 173 if (nflag) { 174 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 175 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 1); 176 } else if (inpcb.inp_flags & INP_ANONPORT) { 177 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 178 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0); 179 } else { 180 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 0); 181 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 182 inpcb.inp_lport != inpcb.inp_fport); 183 } 184 if (istcp) { 185 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 186 printf(" %d", tcpcb.t_state); 187 else 188 printf(" %s", compact ? 189 shorttcpstates[tcpcb.t_state] : 190 tcpstates[tcpcb.t_state]); 191 } 192 putchar('\n'); 193 } 194 } 195 196 /* 197 * Dump TCP statistics structure. 198 */ 199 void 200 tcp_stats(off, name) 201 u_long off; 202 char *name; 203 { 204 struct tcpstat tcpstat; 205 206 if (off == 0) 207 return; 208 printf ("%s:\n", name); 209 kread(off, (char *)&tcpstat, sizeof (tcpstat)); 210 211 #define ps(f, m) if (tcpstat.f || sflag <= 1) \ 212 printf(m, (unsigned long long)tcpstat.f) 213 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 214 printf(m, (unsigned long long)tcpstat.f, plural(tcpstat.f)) 215 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 216 printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ 217 (unsigned long long)tcpstat.f2, plural(tcpstat.f2)) 218 #define p2s(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 219 printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ 220 (unsigned long long)tcpstat.f2) 221 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 222 printf(m, (unsigned long long)tcpstat.f, plurales(tcpstat.f)) 223 224 p(tcps_sndtotal, "\t%llu packet%s sent\n"); 225 p2(tcps_sndpack,tcps_sndbyte, 226 "\t\t%llu data packet%s (%llu byte%s)\n"); 227 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 228 "\t\t%llu data packet%s (%llu byte%s) retransmitted\n"); 229 p2s(tcps_sndacks, tcps_delack, 230 "\t\t%llu ack-only packet%s (%llu delayed)\n"); 231 p(tcps_sndurg, "\t\t%llu URG only packet%s\n"); 232 p(tcps_sndprobe, "\t\t%llu window probe packet%s\n"); 233 p(tcps_sndwinup, "\t\t%llu window update packet%s\n"); 234 p(tcps_sndctrl, "\t\t%llu control packet%s\n"); 235 p(tcps_rcvtotal, "\t%llu packet%s received\n"); 236 p2(tcps_rcvackpack, tcps_rcvackbyte, 237 "\t\t%llu ack%s (for %llu byte%s)\n"); 238 p(tcps_rcvdupack, "\t\t%llu duplicate ack%s\n"); 239 p(tcps_rcvacktoomuch, "\t\t%llu ack%s for unsent data\n"); 240 p2(tcps_rcvpack, tcps_rcvbyte, 241 "\t\t%llu packet%s (%llu byte%s) received in-sequence\n"); 242 p2(tcps_rcvduppack, tcps_rcvdupbyte, 243 "\t\t%llu completely duplicate packet%s (%llu byte%s)\n"); 244 p(tcps_pawsdrop, "\t\t%llu old duplicate packet%s\n"); 245 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 246 "\t\t%llu packet%s with some dup. data (%llu byte%s duped)\n"); 247 p2(tcps_rcvoopack, tcps_rcvoobyte, 248 "\t\t%llu out-of-order packet%s (%llu byte%s)\n"); 249 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 250 "\t\t%llu packet%s (%llu byte%s) of data after window\n"); 251 p(tcps_rcvwinprobe, "\t\t%llu window probe%s\n"); 252 p(tcps_rcvwinupd, "\t\t%llu window update packet%s\n"); 253 p(tcps_rcvafterclose, "\t\t%llu packet%s received after close\n"); 254 p(tcps_rcvbadsum, "\t\t%llu discarded for bad checksum%s\n"); 255 p(tcps_rcvbadoff, "\t\t%llu discarded for bad header offset field%s\n"); 256 ps(tcps_rcvshort, "\t\t%llu discarded because packet too short\n"); 257 p(tcps_connattempt, "\t%llu connection request%s\n"); 258 p(tcps_accepts, "\t%llu connection accept%s\n"); 259 p(tcps_connects, 260 "\t%llu connection%s established (including accepts)\n"); 261 p2(tcps_closed, tcps_drops, 262 "\t%llu connection%s closed (including %llu drop%s)\n"); 263 p(tcps_conndrops, "\t%llu embryonic connection%s dropped\n"); 264 p2(tcps_rttupdated, tcps_segstimed, 265 "\t%llu segment%s updated rtt (of %llu attempt%s)\n"); 266 p(tcps_rexmttimeo, "\t%llu retransmit timeout%s\n"); 267 p(tcps_timeoutdrop, 268 "\t\t%llu connection%s dropped by rexmit timeout\n"); 269 p2(tcps_persisttimeo, tcps_persistdrops, 270 "\t%llu persist timeout%s (resulting in %llu dropped " 271 "connection%s)\n"); 272 p(tcps_keeptimeo, "\t%llu keepalive timeout%s\n"); 273 p(tcps_keepprobe, "\t\t%llu keepalive probe%s sent\n"); 274 p(tcps_keepdrops, "\t\t%llu connection%s dropped by keepalive\n"); 275 p(tcps_predack, "\t%llu correct ACK header prediction%s\n"); 276 p(tcps_preddat, "\t%llu correct data packet header prediction%s\n"); 277 p3(tcps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); 278 ps(tcps_noport, "\t%llu dropped due to no socket\n"); 279 p(tcps_connsdrained, "\t%llu connection%s drained due to memory " 280 "shortage\n"); 281 282 p(tcps_badsyn, "\t%llu bad connection attempt%s\n"); 283 ps(tcps_sc_added, "\t%llu SYN cache entries added\n"); 284 p(tcps_sc_collisions, "\t\t%llu hash collision%s\n"); 285 ps(tcps_sc_completed, "\t\t%llu completed\n"); 286 ps(tcps_sc_aborted, "\t\t%llu aborted (no space to build PCB)\n"); 287 ps(tcps_sc_timed_out, "\t\t%llu timed out\n"); 288 ps(tcps_sc_overflowed, "\t\t%llu dropped due to overflow\n"); 289 ps(tcps_sc_bucketoverflow, "\t\t%llu dropped due to bucket overflow\n"); 290 ps(tcps_sc_reset, "\t\t%llu dropped due to RST\n"); 291 ps(tcps_sc_unreach, "\t\t%llu dropped due to ICMP unreachable\n"); 292 p(tcps_sc_retransmitted, "\t%llu SYN,ACK%s retransmitted\n"); 293 p(tcps_sc_dupesyn, "\t%llu duplicate SYN%s received for entries " 294 "already in the cache\n"); 295 p(tcps_sc_dropped, "\t%llu SYN%s dropped (no route or no space)\n"); 296 297 #undef p 298 #undef ps 299 #undef p2 300 #undef p2s 301 #undef p3 302 } 303 304 /* 305 * Dump UDP statistics structure. 306 */ 307 void 308 udp_stats(off, name) 309 u_long off; 310 char *name; 311 { 312 struct udpstat udpstat; 313 u_quad_t delivered; 314 315 if (off == 0) 316 return; 317 printf("%s:\n", name); 318 kread(off, (char *)&udpstat, sizeof (udpstat)); 319 320 #define ps(f, m) if (udpstat.f || sflag <= 1) \ 321 printf(m, (unsigned long long)udpstat.f) 322 #define p(f, m) if (udpstat.f || sflag <= 1) \ 323 printf(m, (unsigned long long)udpstat.f, plural(udpstat.f)) 324 #define p3(f, m) if (udpstat.f || sflag <= 1) \ 325 printf(m, (unsigned long long)udpstat.f, plurales(udpstat.f)) 326 327 p(udps_ipackets, "\t%llu datagram%s received\n"); 328 ps(udps_hdrops, "\t%llu with incomplete header\n"); 329 ps(udps_badlen, "\t%llu with bad data length field\n"); 330 ps(udps_badsum, "\t%llu with bad checksum\n"); 331 ps(udps_noport, "\t%llu dropped due to no socket\n"); 332 p(udps_noportbcast, "\t%llu broadcast/multicast datagram%s dropped due to no socket\n"); 333 ps(udps_fullsock, "\t%llu dropped due to full socket buffers\n"); 334 delivered = udpstat.udps_ipackets - 335 udpstat.udps_hdrops - 336 udpstat.udps_badlen - 337 udpstat.udps_badsum - 338 udpstat.udps_noport - 339 udpstat.udps_noportbcast - 340 udpstat.udps_fullsock; 341 if (delivered || sflag <= 1) 342 printf("\t%llu delivered\n", (unsigned long long)delivered); 343 p3(udps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); 344 p(udps_opackets, "\t%llu datagram%s output\n"); 345 346 #undef ps 347 #undef p 348 #undef p3 349 } 350 351 /* 352 * Dump IP statistics structure. 353 */ 354 void 355 ip_stats(off, name) 356 u_long off; 357 char *name; 358 { 359 struct ipstat ipstat; 360 361 if (off == 0) 362 return; 363 kread(off, (char *)&ipstat, sizeof (ipstat)); 364 printf("%s:\n", name); 365 366 #define ps(f, m) if (ipstat.f || sflag <= 1) \ 367 printf(m, (unsigned long long)ipstat.f) 368 #define p(f, m) if (ipstat.f || sflag <= 1) \ 369 printf(m, (unsigned long long)ipstat.f, plural(ipstat.f)) 370 371 p(ips_total, "\t%llu total packet%s received\n"); 372 p(ips_badsum, "\t%llu bad header checksum%s\n"); 373 ps(ips_toosmall, "\t%llu with size smaller than minimum\n"); 374 ps(ips_tooshort, "\t%llu with data size < data length\n"); 375 ps(ips_toolong, "\t%llu with length > max ip packet size\n"); 376 ps(ips_badhlen, "\t%llu with header length < data size\n"); 377 ps(ips_badlen, "\t%llu with data length < header length\n"); 378 ps(ips_badoptions, "\t%llu with bad options\n"); 379 ps(ips_badvers, "\t%llu with incorrect version number\n"); 380 p(ips_fragments, "\t%llu fragment%s received\n"); 381 p(ips_fragdropped, "\t%llu fragment%s dropped (dup or out of space)\n"); 382 p(ips_badfrags, "\t%llu malformed fragment%s dropped\n"); 383 p(ips_fragtimeout, "\t%llu fragment%s dropped after timeout\n"); 384 p(ips_reassembled, "\t%llu packet%s reassembled ok\n"); 385 p(ips_delivered, "\t%llu packet%s for this host\n"); 386 p(ips_noproto, "\t%llu packet%s for unknown/unsupported protocol\n"); 387 p(ips_forward, "\t%llu packet%s forwarded"); 388 p(ips_fastforward, " (%llu packet%s fast forwarded)"); 389 if (ipstat.ips_forward || sflag <= 1) 390 putchar('\n'); 391 p(ips_cantforward, "\t%llu packet%s not forwardable\n"); 392 p(ips_redirectsent, "\t%llu redirect%s sent\n"); 393 p(ips_localout, "\t%llu packet%s sent from this host\n"); 394 p(ips_rawout, "\t%llu packet%s sent with fabricated ip header\n"); 395 p(ips_odropped, "\t%llu output packet%s dropped due to no bufs, etc.\n"); 396 p(ips_noroute, "\t%llu output packet%s discarded due to no route\n"); 397 p(ips_fragmented, "\t%llu output datagram%s fragmented\n"); 398 p(ips_ofragments, "\t%llu fragment%s created\n"); 399 p(ips_cantfrag, "\t%llu datagram%s that can't be fragmented\n"); 400 #undef ps 401 #undef p 402 } 403 404 static char *icmpnames[] = { 405 "echo reply", 406 "#1", 407 "#2", 408 "destination unreachable", 409 "source quench", 410 "routing redirect", 411 "#6", 412 "#7", 413 "echo", 414 "#9", 415 "#10", 416 "time exceeded", 417 "parameter problem", 418 "time stamp", 419 "time stamp reply", 420 "information request", 421 "information request reply", 422 "address mask request", 423 "address mask reply", 424 }; 425 426 /* 427 * Dump ICMP statistics. 428 */ 429 void 430 icmp_stats(off, name) 431 u_long off; 432 char *name; 433 { 434 struct icmpstat icmpstat; 435 int i, first; 436 437 if (off == 0) 438 return; 439 kread(off, (char *)&icmpstat, sizeof (icmpstat)); 440 printf("%s:\n", name); 441 442 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 443 printf(m, (unsigned long long)icmpstat.f, plural(icmpstat.f)) 444 445 p(icps_error, "\t%llu call%s to icmp_error\n"); 446 p(icps_oldicmp, 447 "\t%llu error%s not generated because old message was icmp\n"); 448 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 449 if (icmpstat.icps_outhist[i] != 0) { 450 if (first) { 451 printf("\tOutput histogram:\n"); 452 first = 0; 453 } 454 printf("\t\t%s: %llu\n", icmpnames[i], 455 (unsigned long long)icmpstat.icps_outhist[i]); 456 } 457 p(icps_badcode, "\t%llu message%s with bad code fields\n"); 458 p(icps_tooshort, "\t%llu message%s < minimum length\n"); 459 p(icps_checksum, "\t%llu bad checksum%s\n"); 460 p(icps_badlen, "\t%llu message%s with bad length\n"); 461 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 462 if (icmpstat.icps_inhist[i] != 0) { 463 if (first) { 464 printf("\tInput histogram:\n"); 465 first = 0; 466 } 467 printf("\t\t%s: %llu\n", icmpnames[i], 468 (unsigned long long)icmpstat.icps_inhist[i]); 469 } 470 p(icps_reflect, "\t%llu message response%s generated\n"); 471 #undef p 472 } 473 474 /* 475 * Dump IGMP statistics structure. 476 */ 477 void 478 igmp_stats(off, name) 479 u_long off; 480 char *name; 481 { 482 struct igmpstat igmpstat; 483 484 if (off == 0) 485 return; 486 kread(off, (char *)&igmpstat, sizeof (igmpstat)); 487 printf("%s:\n", name); 488 489 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 490 printf(m, (unsigned long long)igmpstat.f, plural(igmpstat.f)) 491 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 492 printf(m, (unsigned long long)igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 493 p(igps_rcv_total, "\t%llu message%s received\n"); 494 p(igps_rcv_tooshort, "\t%llu message%s received with too few bytes\n"); 495 p(igps_rcv_badsum, "\t%llu message%s received with bad checksum\n"); 496 py(igps_rcv_queries, "\t%llu membership quer%s received\n"); 497 py(igps_rcv_badqueries, "\t%llu membership quer%s received with invalid field(s)\n"); 498 p(igps_rcv_reports, "\t%llu membership report%s received\n"); 499 p(igps_rcv_badreports, "\t%llu membership report%s received with invalid field(s)\n"); 500 p(igps_rcv_ourreports, "\t%llu membership report%s received for groups to which we belong\n"); 501 p(igps_snd_reports, "\t%llu membership report%s sent\n"); 502 #undef p 503 #undef py 504 } 505 506 /* 507 * Pretty print an Internet address (net address + port). 508 * If the nflag was specified, use numbers instead of names. 509 */ 510 void 511 inetprint(in, port, proto, numeric) 512 struct in_addr *in; 513 u_int16_t port; 514 const char *proto; 515 int numeric; 516 { 517 struct servent *sp = 0; 518 char line[80], *cp; 519 size_t space; 520 521 (void)snprintf(line, sizeof line, "%.*s.", 522 (Aflag && !nflag) ? 12 : 16, inetname(in)); 523 cp = strchr(line, '\0'); 524 if (!numeric && port) 525 sp = getservbyport((int)port, proto); 526 space = sizeof line - (cp-line); 527 if (sp || port == 0) 528 (void)snprintf(cp, space, "%.8s", sp ? sp->s_name : "*"); 529 else 530 (void)snprintf(cp, space, "%u", ntohs(port)); 531 (void)printf(" %-*.*s", width, width, line); 532 } 533 534 /* 535 * Construct an Internet address representation. 536 * If the nflag has been supplied, give 537 * numeric value, otherwise try for symbolic name. 538 */ 539 char * 540 inetname(inp) 541 struct in_addr *inp; 542 { 543 char *cp; 544 static char line[50]; 545 struct hostent *hp; 546 struct netent *np; 547 static char domain[MAXHOSTNAMELEN + 1]; 548 static int first = 1; 549 550 if (first && !nflag) { 551 first = 0; 552 if (gethostname(domain, sizeof domain) == 0) { 553 domain[sizeof(domain) - 1] = '\0'; 554 if ((cp = strchr(domain, '.'))) 555 (void) strcpy(domain, cp + 1); 556 else 557 domain[0] = 0; 558 } else 559 domain[0] = 0; 560 } 561 cp = 0; 562 if (!nflag && inp->s_addr != INADDR_ANY) { 563 int net = inet_netof(*inp); 564 int lna = inet_lnaof(*inp); 565 566 if (lna == INADDR_ANY) { 567 np = getnetbyaddr(net, AF_INET); 568 if (np) 569 cp = np->n_name; 570 } 571 if (cp == 0) { 572 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 573 if (hp) { 574 if ((cp = strchr(hp->h_name, '.')) && 575 !strcmp(cp + 1, domain)) 576 *cp = 0; 577 cp = hp->h_name; 578 } 579 } 580 } 581 if (inp->s_addr == INADDR_ANY) 582 strncpy(line, "*", sizeof line); 583 else if (cp) 584 strncpy(line, cp, sizeof line); 585 else { 586 inp->s_addr = ntohl(inp->s_addr); 587 #define C(x) ((x) & 0xff) 588 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 589 C(inp->s_addr >> 24), C(inp->s_addr >> 16), 590 C(inp->s_addr >> 8), C(inp->s_addr)); 591 #undef C 592 } 593 line[sizeof(line) - 1] = '\0'; 594 return (line); 595 } 596 597 /* 598 * Dump the contents of a TCP PCB. 599 */ 600 void 601 tcp_dump(pcbaddr) 602 u_long pcbaddr; 603 { 604 struct tcpcb tcpcb; 605 int i; 606 607 kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb)); 608 609 printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr); 610 611 printf("Timers:\n"); 612 for (i = 0; i < TCPT_NTIMERS; i++) 613 printf("\t%s: %u", tcptimers[i], tcpcb.t_timer[i]); 614 printf("\n\n"); 615 616 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 617 printf("State: %d", tcpcb.t_state); 618 else 619 printf("State: %s", tcpstates[tcpcb.t_state]); 620 printf(", flags 0x%x, inpcb 0x%lx\n\n", tcpcb.t_flags, 621 (u_long)tcpcb.t_inpcb); 622 623 printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift, 624 tcpcb.t_rxtcur, tcpcb.t_dupacks); 625 printf("peermss %u, ourmss %u, segsz %u\n\n", tcpcb.t_peermss, 626 tcpcb.t_ourmss, tcpcb.t_segsz); 627 628 printf("snd_una %u, snd_nxt %u, snd_up %u\n", 629 tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up); 630 printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n", 631 tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd); 632 633 printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n", 634 tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs); 635 636 printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n", 637 tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh); 638 639 printf("idle %d, rtt %d, rtseq %u, srtt %d, rttvar %d, rttmin %d, " 640 "max_sndwnd %lu\n\n", tcpcb.t_idle, tcpcb.t_rtt, tcpcb.t_rtseq, 641 tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin, tcpcb.max_sndwnd); 642 643 printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags, 644 tcpcb.t_iobc, tcpcb.t_softerror); 645 646 printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n", 647 tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale, 648 tcpcb.requested_s_scale); 649 printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n", 650 tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent); 651 } 652