1 /* $NetBSD: inet.c,v 1.42 2000/10/18 19:20:03 itojun 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 1.42 2000/10/18 19:20:03 itojun 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/if_arp.h> 53 #include <net/route.h> 54 #include <netinet/in.h> 55 #include <netinet/in_systm.h> 56 #include <netinet/ip.h> 57 #include <netinet/in_pcb.h> 58 #include <netinet/ip_icmp.h> 59 60 #ifdef INET6 61 #include <netinet/ip6.h> 62 #endif 63 64 #include <netinet/icmp_var.h> 65 #include <netinet/igmp_var.h> 66 #include <netinet/ip_var.h> 67 #include <netinet/tcp.h> 68 #include <netinet/tcpip.h> 69 #include <netinet/tcp_seq.h> 70 #define TCPSTATES 71 #include <netinet/tcp_fsm.h> 72 #define TCPTIMERS 73 #include <netinet/tcp_timer.h> 74 #include <netinet/tcp_var.h> 75 #include <netinet/tcp_debug.h> 76 #include <netinet/udp.h> 77 #include <netinet/udp_var.h> 78 79 #include <arpa/inet.h> 80 #include <netdb.h> 81 #include <stdio.h> 82 #include <string.h> 83 #include <unistd.h> 84 #include "netstat.h" 85 86 struct inpcb inpcb; 87 struct tcpcb tcpcb; 88 struct socket sockb; 89 90 char *inetname __P((struct in_addr *)); 91 void inetprint __P((struct in_addr *, u_int16_t, const char *, int)); 92 93 /* 94 * Print a summary of connections related to an Internet 95 * protocol. For TCP, also give state of connection. 96 * Listening processes (aflag) are suppressed unless the 97 * -a (all) flag is specified. 98 */ 99 static int width; 100 101 void 102 protopr(off, name) 103 u_long off; 104 char *name; 105 { 106 struct inpcbtable table; 107 struct inpcb *head, *next, *prev; 108 struct inpcb inpcb; 109 int istcp, compact; 110 static int first = 1; 111 static char *shorttcpstates[] = { 112 "CLOSED", "LISTEN", "SYNSEN", "SYSRCV", 113 "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG", 114 "LASTAK", "FWAIT2", "TMWAIT", 115 }; 116 117 if (off == 0) 118 return; 119 istcp = strcmp(name, "tcp") == 0; 120 kread(off, (char *)&table, sizeof table); 121 prev = head = 122 (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; 123 next = table.inpt_queue.cqh_first; 124 125 compact = 0; 126 if (Aflag) { 127 if (!nflag) 128 width = 18; 129 else { 130 width = 21; 131 compact = 1; 132 } 133 } else 134 width = 22; 135 while (next != head) { 136 kread((u_long)next, (char *)&inpcb, sizeof inpcb); 137 if (inpcb.inp_queue.cqe_prev != prev) { 138 printf("???\n"); 139 break; 140 } 141 prev = next; 142 next = inpcb.inp_queue.cqe_next; 143 144 if (!aflag && 145 inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) 146 continue; 147 kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb)); 148 if (istcp) { 149 kread((u_long)inpcb.inp_ppcb, 150 (char *)&tcpcb, sizeof (tcpcb)); 151 } 152 if (first) { 153 printf("Active Internet connections"); 154 if (aflag) 155 printf(" (including servers)"); 156 putchar('\n'); 157 if (Aflag) 158 printf("%-8.8s ", "PCB"); 159 printf("%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n", 160 "Proto", "Recv-Q", "Send-Q", 161 compact ? "" : " ", 162 width, width, "Local Address", 163 width, width, "Foreign Address", "State"); 164 first = 0; 165 } 166 if (Aflag) { 167 if (istcp) 168 printf("%8lx ", (u_long) inpcb.inp_ppcb); 169 else 170 printf("%8lx ", (u_long) prev); 171 } 172 printf("%-5.5s %6ld %6ld%s", name, sockb.so_rcv.sb_cc, 173 sockb.so_snd.sb_cc, compact ? "" : " "); 174 if (nflag) { 175 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 176 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 1); 177 } else if (inpcb.inp_flags & INP_ANONPORT) { 178 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 179 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0); 180 } else { 181 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 0); 182 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 183 inpcb.inp_lport != inpcb.inp_fport); 184 } 185 if (istcp) { 186 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 187 printf(" %d", tcpcb.t_state); 188 else 189 printf(" %s", compact ? 190 shorttcpstates[tcpcb.t_state] : 191 tcpstates[tcpcb.t_state]); 192 } 193 putchar('\n'); 194 } 195 } 196 197 /* 198 * Dump TCP statistics structure. 199 */ 200 void 201 tcp_stats(off, name) 202 u_long off; 203 char *name; 204 { 205 struct tcpstat tcpstat; 206 207 if (off == 0) 208 return; 209 printf ("%s:\n", name); 210 kread(off, (char *)&tcpstat, sizeof (tcpstat)); 211 212 #define ps(f, m) if (tcpstat.f || sflag <= 1) \ 213 printf(m, (unsigned long long)tcpstat.f) 214 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 215 printf(m, (unsigned long long)tcpstat.f, plural(tcpstat.f)) 216 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 217 printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ 218 (unsigned long long)tcpstat.f2, plural(tcpstat.f2)) 219 #define p2s(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 220 printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \ 221 (unsigned long long)tcpstat.f2) 222 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 223 printf(m, (unsigned long long)tcpstat.f, plurales(tcpstat.f)) 224 225 p(tcps_sndtotal, "\t%llu packet%s sent\n"); 226 p2(tcps_sndpack,tcps_sndbyte, 227 "\t\t%llu data packet%s (%llu byte%s)\n"); 228 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 229 "\t\t%llu data packet%s (%llu byte%s) retransmitted\n"); 230 p2s(tcps_sndacks, tcps_delack, 231 "\t\t%llu ack-only packet%s (%llu delayed)\n"); 232 p(tcps_sndurg, "\t\t%llu URG only packet%s\n"); 233 p(tcps_sndprobe, "\t\t%llu window probe packet%s\n"); 234 p(tcps_sndwinup, "\t\t%llu window update packet%s\n"); 235 p(tcps_sndctrl, "\t\t%llu control packet%s\n"); 236 p(tcps_rcvtotal, "\t%llu packet%s received\n"); 237 p2(tcps_rcvackpack, tcps_rcvackbyte, 238 "\t\t%llu ack%s (for %llu byte%s)\n"); 239 p(tcps_rcvdupack, "\t\t%llu duplicate ack%s\n"); 240 p(tcps_rcvacktoomuch, "\t\t%llu ack%s for unsent data\n"); 241 p2(tcps_rcvpack, tcps_rcvbyte, 242 "\t\t%llu packet%s (%llu byte%s) received in-sequence\n"); 243 p2(tcps_rcvduppack, tcps_rcvdupbyte, 244 "\t\t%llu completely duplicate packet%s (%llu byte%s)\n"); 245 p(tcps_pawsdrop, "\t\t%llu old duplicate packet%s\n"); 246 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 247 "\t\t%llu packet%s with some dup. data (%llu byte%s duped)\n"); 248 p2(tcps_rcvoopack, tcps_rcvoobyte, 249 "\t\t%llu out-of-order packet%s (%llu byte%s)\n"); 250 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 251 "\t\t%llu packet%s (%llu byte%s) of data after window\n"); 252 p(tcps_rcvwinprobe, "\t\t%llu window probe%s\n"); 253 p(tcps_rcvwinupd, "\t\t%llu window update packet%s\n"); 254 p(tcps_rcvafterclose, "\t\t%llu packet%s received after close\n"); 255 p(tcps_rcvbadsum, "\t\t%llu discarded for bad checksum%s\n"); 256 p(tcps_rcvbadoff, "\t\t%llu discarded for bad header offset field%s\n"); 257 ps(tcps_rcvshort, "\t\t%llu discarded because packet too short\n"); 258 p(tcps_connattempt, "\t%llu connection request%s\n"); 259 p(tcps_accepts, "\t%llu connection accept%s\n"); 260 p(tcps_connects, 261 "\t%llu connection%s established (including accepts)\n"); 262 p2(tcps_closed, tcps_drops, 263 "\t%llu connection%s closed (including %llu drop%s)\n"); 264 p(tcps_conndrops, "\t%llu embryonic connection%s dropped\n"); 265 p2(tcps_rttupdated, tcps_segstimed, 266 "\t%llu segment%s updated rtt (of %llu attempt%s)\n"); 267 p(tcps_rexmttimeo, "\t%llu retransmit timeout%s\n"); 268 p(tcps_timeoutdrop, 269 "\t\t%llu connection%s dropped by rexmit timeout\n"); 270 p2(tcps_persisttimeo, tcps_persistdrops, 271 "\t%llu persist timeout%s (resulting in %llu dropped " 272 "connection%s)\n"); 273 p(tcps_keeptimeo, "\t%llu keepalive timeout%s\n"); 274 p(tcps_keepprobe, "\t\t%llu keepalive probe%s sent\n"); 275 p(tcps_keepdrops, "\t\t%llu connection%s dropped by keepalive\n"); 276 p(tcps_predack, "\t%llu correct ACK header prediction%s\n"); 277 p(tcps_preddat, "\t%llu correct data packet header prediction%s\n"); 278 p3(tcps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); 279 ps(tcps_noport, "\t%llu dropped due to no socket\n"); 280 p(tcps_connsdrained, "\t%llu connection%s drained due to memory " 281 "shortage\n"); 282 283 p(tcps_badsyn, "\t%llu bad connection attempt%s\n"); 284 ps(tcps_sc_added, "\t%llu SYN cache entries added\n"); 285 p(tcps_sc_collisions, "\t\t%llu hash collision%s\n"); 286 ps(tcps_sc_completed, "\t\t%llu completed\n"); 287 ps(tcps_sc_aborted, "\t\t%llu aborted (no space to build PCB)\n"); 288 ps(tcps_sc_timed_out, "\t\t%llu timed out\n"); 289 ps(tcps_sc_overflowed, "\t\t%llu dropped due to overflow\n"); 290 ps(tcps_sc_bucketoverflow, "\t\t%llu dropped due to bucket overflow\n"); 291 ps(tcps_sc_reset, "\t\t%llu dropped due to RST\n"); 292 ps(tcps_sc_unreach, "\t\t%llu dropped due to ICMP unreachable\n"); 293 p(tcps_sc_retransmitted, "\t%llu SYN,ACK%s retransmitted\n"); 294 p(tcps_sc_dupesyn, "\t%llu duplicate SYN%s received for entries " 295 "already in the cache\n"); 296 p(tcps_sc_dropped, "\t%llu SYN%s dropped (no route or no space)\n"); 297 298 #undef p 299 #undef ps 300 #undef p2 301 #undef p2s 302 #undef p3 303 } 304 305 /* 306 * Dump UDP statistics structure. 307 */ 308 void 309 udp_stats(off, name) 310 u_long off; 311 char *name; 312 { 313 struct udpstat udpstat; 314 u_quad_t delivered; 315 316 if (off == 0) 317 return; 318 printf("%s:\n", name); 319 kread(off, (char *)&udpstat, sizeof (udpstat)); 320 321 #define ps(f, m) if (udpstat.f || sflag <= 1) \ 322 printf(m, (unsigned long long)udpstat.f) 323 #define p(f, m) if (udpstat.f || sflag <= 1) \ 324 printf(m, (unsigned long long)udpstat.f, plural(udpstat.f)) 325 #define p3(f, m) if (udpstat.f || sflag <= 1) \ 326 printf(m, (unsigned long long)udpstat.f, plurales(udpstat.f)) 327 328 p(udps_ipackets, "\t%llu datagram%s received\n"); 329 ps(udps_hdrops, "\t%llu with incomplete header\n"); 330 ps(udps_badlen, "\t%llu with bad data length field\n"); 331 ps(udps_badsum, "\t%llu with bad checksum\n"); 332 ps(udps_noport, "\t%llu dropped due to no socket\n"); 333 p(udps_noportbcast, "\t%llu broadcast/multicast datagram%s dropped due to no socket\n"); 334 ps(udps_fullsock, "\t%llu dropped due to full socket buffers\n"); 335 delivered = udpstat.udps_ipackets - 336 udpstat.udps_hdrops - 337 udpstat.udps_badlen - 338 udpstat.udps_badsum - 339 udpstat.udps_noport - 340 udpstat.udps_noportbcast - 341 udpstat.udps_fullsock; 342 if (delivered || sflag <= 1) 343 printf("\t%llu delivered\n", (unsigned long long)delivered); 344 p3(udps_pcbhashmiss, "\t%llu PCB hash miss%s\n"); 345 p(udps_opackets, "\t%llu datagram%s output\n"); 346 347 #undef ps 348 #undef p 349 #undef p3 350 } 351 352 /* 353 * Dump IP statistics structure. 354 */ 355 void 356 ip_stats(off, name) 357 u_long off; 358 char *name; 359 { 360 struct ipstat ipstat; 361 362 if (off == 0) 363 return; 364 kread(off, (char *)&ipstat, sizeof (ipstat)); 365 printf("%s:\n", name); 366 367 #define ps(f, m) if (ipstat.f || sflag <= 1) \ 368 printf(m, (unsigned long long)ipstat.f) 369 #define p(f, m) if (ipstat.f || sflag <= 1) \ 370 printf(m, (unsigned long long)ipstat.f, plural(ipstat.f)) 371 372 p(ips_total, "\t%llu total packet%s received\n"); 373 p(ips_badsum, "\t%llu bad header checksum%s\n"); 374 ps(ips_toosmall, "\t%llu with size smaller than minimum\n"); 375 ps(ips_tooshort, "\t%llu with data size < data length\n"); 376 ps(ips_toolong, "\t%llu with length > max ip packet size\n"); 377 ps(ips_badhlen, "\t%llu with header length < data size\n"); 378 ps(ips_badlen, "\t%llu with data length < header length\n"); 379 ps(ips_badoptions, "\t%llu with bad options\n"); 380 ps(ips_badvers, "\t%llu with incorrect version number\n"); 381 p(ips_fragments, "\t%llu fragment%s received\n"); 382 p(ips_fragdropped, "\t%llu fragment%s dropped (dup or out of space)\n"); 383 p(ips_badfrags, "\t%llu malformed fragment%s dropped\n"); 384 p(ips_fragtimeout, "\t%llu fragment%s dropped after timeout\n"); 385 p(ips_reassembled, "\t%llu packet%s reassembled ok\n"); 386 p(ips_delivered, "\t%llu packet%s for this host\n"); 387 p(ips_noproto, "\t%llu packet%s for unknown/unsupported protocol\n"); 388 p(ips_forward, "\t%llu packet%s forwarded"); 389 p(ips_fastforward, " (%llu packet%s fast forwarded)"); 390 if (ipstat.ips_forward || sflag <= 1) 391 putchar('\n'); 392 p(ips_cantforward, "\t%llu packet%s not forwardable\n"); 393 p(ips_redirectsent, "\t%llu redirect%s sent\n"); 394 p(ips_localout, "\t%llu packet%s sent from this host\n"); 395 p(ips_rawout, "\t%llu packet%s sent with fabricated ip header\n"); 396 p(ips_odropped, "\t%llu output packet%s dropped due to no bufs, etc.\n"); 397 p(ips_noroute, "\t%llu output packet%s discarded due to no route\n"); 398 p(ips_fragmented, "\t%llu output datagram%s fragmented\n"); 399 p(ips_ofragments, "\t%llu fragment%s created\n"); 400 p(ips_cantfrag, "\t%llu datagram%s that can't be fragmented\n"); 401 #undef ps 402 #undef p 403 } 404 405 static char *icmpnames[] = { 406 "echo reply", 407 "#1", 408 "#2", 409 "destination unreachable", 410 "source quench", 411 "routing redirect", 412 "#6", 413 "#7", 414 "echo", 415 "#9", 416 "#10", 417 "time exceeded", 418 "parameter problem", 419 "time stamp", 420 "time stamp reply", 421 "information request", 422 "information request reply", 423 "address mask request", 424 "address mask reply", 425 }; 426 427 /* 428 * Dump ICMP statistics. 429 */ 430 void 431 icmp_stats(off, name) 432 u_long off; 433 char *name; 434 { 435 struct icmpstat icmpstat; 436 int i, first; 437 438 if (off == 0) 439 return; 440 kread(off, (char *)&icmpstat, sizeof (icmpstat)); 441 printf("%s:\n", name); 442 443 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 444 printf(m, (unsigned long long)icmpstat.f, plural(icmpstat.f)) 445 446 p(icps_error, "\t%llu call%s to icmp_error\n"); 447 p(icps_oldicmp, 448 "\t%llu error%s not generated because old message was icmp\n"); 449 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 450 if (icmpstat.icps_outhist[i] != 0) { 451 if (first) { 452 printf("\tOutput histogram:\n"); 453 first = 0; 454 } 455 printf("\t\t%s: %llu\n", icmpnames[i], 456 (unsigned long long)icmpstat.icps_outhist[i]); 457 } 458 p(icps_badcode, "\t%llu message%s with bad code fields\n"); 459 p(icps_tooshort, "\t%llu message%s < minimum length\n"); 460 p(icps_checksum, "\t%llu bad checksum%s\n"); 461 p(icps_badlen, "\t%llu message%s with bad length\n"); 462 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 463 if (icmpstat.icps_inhist[i] != 0) { 464 if (first) { 465 printf("\tInput histogram:\n"); 466 first = 0; 467 } 468 printf("\t\t%s: %llu\n", icmpnames[i], 469 (unsigned long long)icmpstat.icps_inhist[i]); 470 } 471 p(icps_reflect, "\t%llu message response%s generated\n"); 472 p(icps_pmtuchg, "\t%llu path MTU change%s\n"); 473 #undef p 474 } 475 476 /* 477 * Dump IGMP statistics structure. 478 */ 479 void 480 igmp_stats(off, name) 481 u_long off; 482 char *name; 483 { 484 struct igmpstat igmpstat; 485 486 if (off == 0) 487 return; 488 kread(off, (char *)&igmpstat, sizeof (igmpstat)); 489 printf("%s:\n", name); 490 491 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 492 printf(m, (unsigned long long)igmpstat.f, plural(igmpstat.f)) 493 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 494 printf(m, (unsigned long long)igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 495 p(igps_rcv_total, "\t%llu message%s received\n"); 496 p(igps_rcv_tooshort, "\t%llu message%s received with too few bytes\n"); 497 p(igps_rcv_badsum, "\t%llu message%s received with bad checksum\n"); 498 py(igps_rcv_queries, "\t%llu membership quer%s received\n"); 499 py(igps_rcv_badqueries, "\t%llu membership quer%s received with invalid field(s)\n"); 500 p(igps_rcv_reports, "\t%llu membership report%s received\n"); 501 p(igps_rcv_badreports, "\t%llu membership report%s received with invalid field(s)\n"); 502 p(igps_rcv_ourreports, "\t%llu membership report%s received for groups to which we belong\n"); 503 p(igps_snd_reports, "\t%llu membership report%s sent\n"); 504 #undef p 505 #undef py 506 } 507 508 /* 509 * Dump the ARP statistics structure. 510 */ 511 void 512 arp_stats(off, name) 513 u_long off; 514 char *name; 515 { 516 struct arpstat arpstat; 517 518 if (off == 0) 519 return; 520 kread(off, (char *)&arpstat, sizeof (arpstat)); 521 printf("%s:\n", name); 522 523 #define ps(f, m) if (arpstat.f || sflag <= 1) \ 524 printf(m, (unsigned long long)arpstat.f) 525 #define p(f, m) if (arpstat.f || sflag <= 1) \ 526 printf(m, (unsigned long long)arpstat.f, plural(arpstat.f)) 527 528 p(as_sndtotal, "\t%llu packet%s sent\n"); 529 p(as_sndreply, "\t\t%llu reply packet%s\n"); 530 p(as_sndrequest, "\t\t%llu request packet%s\n"); 531 532 p(as_rcvtotal, "\t%llu packet%s received\n"); 533 p(as_rcvreply, "\t\t%llu reply packet%s\n"); 534 p(as_rcvrequest, "\t\t%llu valid request packet%s\n"); 535 p(as_rcvmcast, "\t\t%llu broadcast/multicast packet%s\n"); 536 p(as_rcvbadproto, "\t\t%llu packet%s with unknown protocol type\n"); 537 p(as_rcvbadlen, "\t\t%llu packet%s with bad (short) length\n"); 538 p(as_rcvzerotpa, "\t\t%llu packet%s with null target IP address\n"); 539 p(as_rcvzerospa, "\t\t%llu packet%s with null source IP address\n"); 540 ps(as_rcvnoint, "\t\t%llu could not be mapped to an interface\n"); 541 p(as_rcvlocalsha, "\t\t%llu packet%s sourced from a local hardware " 542 "address\n"); 543 p(as_rcvbcastsha, "\t\t%llu packet%s with a broadcast " 544 "source hardware address\n"); 545 p(as_rcvlocalspa, "\t\t%llu duplicate%s for a local IP address\n"); 546 p(as_rcvoverperm, "\t\t%llu attempt%s to overwrite a static entry\n"); 547 p(as_rcvoverint, "\t\t%llu packet%s received on wrong interface\n"); 548 p(as_rcvover, "\t\t%llu entry%s overwritten\n"); 549 p(as_rcvlenchg, "\t\t%llu change%s in hardware address length\n"); 550 551 p(as_dfrtotal, "\t%llu packet%s deferred pending ARP resolution\n"); 552 ps(as_dfrsent, "\t\t%llu sent\n"); 553 ps(as_dfrdropped, "\t\t%llu dropped\n"); 554 555 p(as_allocfail, "\t%llu failure%s to allocate llinfo\n"); 556 557 #undef ps 558 #undef p 559 } 560 561 /* 562 * Pretty print an Internet address (net address + port). 563 * If the nflag was specified, use numbers instead of names. 564 */ 565 void 566 inetprint(in, port, proto, numeric) 567 struct in_addr *in; 568 u_int16_t port; 569 const char *proto; 570 int numeric; 571 { 572 struct servent *sp = 0; 573 char line[80], *cp; 574 size_t space; 575 576 (void)snprintf(line, sizeof line, "%.*s.", 577 (Aflag && !nflag) ? 12 : 16, inetname(in)); 578 cp = strchr(line, '\0'); 579 if (!numeric && port) 580 sp = getservbyport((int)port, proto); 581 space = sizeof line - (cp-line); 582 if (sp || port == 0) 583 (void)snprintf(cp, space, "%.8s", sp ? sp->s_name : "*"); 584 else 585 (void)snprintf(cp, space, "%u", ntohs(port)); 586 (void)printf(" %-*.*s", width, width, line); 587 } 588 589 /* 590 * Construct an Internet address representation. 591 * If the nflag has been supplied, give 592 * numeric value, otherwise try for symbolic name. 593 */ 594 char * 595 inetname(inp) 596 struct in_addr *inp; 597 { 598 char *cp; 599 static char line[50]; 600 struct hostent *hp; 601 struct netent *np; 602 static char domain[MAXHOSTNAMELEN + 1]; 603 static int first = 1; 604 605 if (first && !nflag) { 606 first = 0; 607 if (gethostname(domain, sizeof domain) == 0) { 608 domain[sizeof(domain) - 1] = '\0'; 609 if ((cp = strchr(domain, '.'))) 610 (void) strcpy(domain, cp + 1); 611 else 612 domain[0] = 0; 613 } else 614 domain[0] = 0; 615 } 616 cp = 0; 617 if (!nflag && inp->s_addr != INADDR_ANY) { 618 int net = inet_netof(*inp); 619 int lna = inet_lnaof(*inp); 620 621 if (lna == INADDR_ANY) { 622 np = getnetbyaddr(net, AF_INET); 623 if (np) 624 cp = np->n_name; 625 } 626 if (cp == 0) { 627 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 628 if (hp) { 629 if ((cp = strchr(hp->h_name, '.')) && 630 !strcmp(cp + 1, domain)) 631 *cp = 0; 632 cp = hp->h_name; 633 } 634 } 635 } 636 if (inp->s_addr == INADDR_ANY) 637 strncpy(line, "*", sizeof line); 638 else if (cp) 639 strncpy(line, cp, sizeof line); 640 else { 641 inp->s_addr = ntohl(inp->s_addr); 642 #define C(x) ((x) & 0xff) 643 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 644 C(inp->s_addr >> 24), C(inp->s_addr >> 16), 645 C(inp->s_addr >> 8), C(inp->s_addr)); 646 #undef C 647 } 648 line[sizeof(line) - 1] = '\0'; 649 return (line); 650 } 651 652 /* 653 * Dump the contents of a TCP PCB. 654 */ 655 void 656 tcp_dump(pcbaddr) 657 u_long pcbaddr; 658 { 659 struct tcpcb tcpcb; 660 int i; 661 662 kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb)); 663 664 printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr); 665 666 printf("Timers:\n"); 667 for (i = 0; i < TCPT_NTIMERS; i++) 668 printf("\t%s: %u", tcptimers[i], tcpcb.t_timer[i]); 669 printf("\n\n"); 670 671 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 672 printf("State: %d", tcpcb.t_state); 673 else 674 printf("State: %s", tcpstates[tcpcb.t_state]); 675 printf(", flags 0x%x, inpcb 0x%lx\n\n", tcpcb.t_flags, 676 (u_long)tcpcb.t_inpcb); 677 678 printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift, 679 tcpcb.t_rxtcur, tcpcb.t_dupacks); 680 printf("peermss %u, ourmss %u, segsz %u\n\n", tcpcb.t_peermss, 681 tcpcb.t_ourmss, tcpcb.t_segsz); 682 683 printf("snd_una %u, snd_nxt %u, snd_up %u\n", 684 tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up); 685 printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n", 686 tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd); 687 688 printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n", 689 tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs); 690 691 printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n", 692 tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh); 693 694 printf("idle %d, rtt %d, rtseq %u, srtt %d, rttvar %d, rttmin %d, " 695 "max_sndwnd %lu\n\n", tcpcb.t_idle, tcpcb.t_rtt, tcpcb.t_rtseq, 696 tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin, tcpcb.max_sndwnd); 697 698 printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags, 699 tcpcb.t_iobc, tcpcb.t_softerror); 700 701 printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n", 702 tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale, 703 tcpcb.requested_s_scale); 704 printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n", 705 tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent); 706 } 707