1 /* $NetBSD: inet.c,v 1.119 2022/10/28 05:27:17 ozaki-r 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94"; 36 #else 37 __RCSID("$NetBSD: inet.c,v 1.119 2022/10/28 05:27:17 ozaki-r Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #define _CALLOUT_PRIVATE /* for defs in sys/callout.h */ 42 43 #include <sys/param.h> 44 #include <sys/queue.h> 45 #include <sys/socket.h> 46 #include <sys/socketvar.h> 47 #include <sys/mbuf.h> 48 #include <sys/protosw.h> 49 #include <sys/sysctl.h> 50 51 #include <net/if_arp.h> 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 #define ICMP_STRINGS 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/pim_var.h> 68 #include <netinet/tcp.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/ip_carp.h> 78 #include <netinet/udp_var.h> 79 #include <netinet/tcp_vtw.h> 80 81 #include <arpa/inet.h> 82 #include <kvm.h> 83 #include <netdb.h> 84 #include <stdio.h> 85 #include <string.h> 86 #include <unistd.h> 87 #include <stdlib.h> 88 #include <err.h> 89 #include <util.h> 90 #include <errno.h> 91 92 #include "netstat.h" 93 #include "vtw.h" 94 #include "prog_ops.h" 95 96 char *inetname(struct in_addr *); 97 void inetprint(struct in_addr *, uint16_t, const char *, int); 98 99 void print_vtw_v4(const vtw_t *); 100 101 /* 102 * Print a summary of connections related to an Internet 103 * protocol. For TCP, also give state of connection. 104 * Listening processes (aflag) are suppressed unless the 105 * -a (all) flag is specified. 106 */ 107 static int width; 108 static int compact; 109 110 /* VTW-related variables. */ 111 static struct timeval now; 112 113 static void 114 protoprhdr(void) 115 { 116 printf("Active Internet connections"); 117 if (aflag) 118 printf(" (including servers)"); 119 putchar('\n'); 120 if (Aflag) 121 printf("%-8.8s ", "PCB"); 122 printf( 123 Vflag ? "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %-13.13s Expires\n" 124 : "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n", 125 "Proto", "Recv-Q", "Send-Q", compact ? "" : " ", 126 width, width, "Local Address", 127 width, width, "Foreign Address", 128 "State"); 129 } 130 131 static void 132 protopr0(intptr_t ppcb, u_long rcv_sb_cc, u_long snd_sb_cc, 133 struct in_addr *laddr, uint16_t lport, 134 struct in_addr *faddr, uint16_t fport, 135 short t_state, const char *name, int inp_flags, 136 const struct timeval *expires) 137 { 138 static const char *shorttcpstates[] = { 139 "CLOSED", "LISTEN", "SYNSEN", "SYSRCV", 140 "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG", 141 "LASTAK", "FWAIT2", "TMWAIT" 142 }; 143 int istcp; 144 145 istcp = strcmp(name, "tcp") == 0; 146 147 if (Aflag) 148 printf("%8" PRIxPTR " ", ppcb); 149 150 printf("%-5.5s %6ld %6ld%s", name, rcv_sb_cc, snd_sb_cc, 151 compact ? "" : " "); 152 if (numeric_port) { 153 inetprint(laddr, lport, name, 1); 154 inetprint(faddr, fport, name, 1); 155 } else if (inp_flags & INP_ANONPORT) { 156 inetprint(laddr, lport, name, 1); 157 inetprint(faddr, fport, name, 0); 158 } else { 159 inetprint(laddr, lport, name, 0); 160 inetprint(faddr, fport, name, 0); 161 } 162 if (istcp) { 163 if (t_state < 0 || t_state >= TCP_NSTATES) 164 printf(" %d", t_state); 165 else 166 printf(" %s", compact ? shorttcpstates[t_state] : 167 tcpstates[t_state]); 168 } 169 if (Vflag && expires != NULL) { 170 if (expires->tv_sec == 0 && expires->tv_usec == -1) 171 printf(" reclaimed"); 172 else { 173 struct timeval delta; 174 175 timersub(expires, &now, &delta); 176 printf(" %.3fms", 177 delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0); 178 } 179 } 180 putchar('\n'); 181 } 182 183 static void 184 dbg_printf(const char *fmt, ...) 185 { 186 return; 187 } 188 189 void 190 print_vtw_v4(const vtw_t *vtw) 191 { 192 const vtw_v4_t *v4 = (const vtw_v4_t *)vtw; 193 struct timeval delta; 194 struct in_addr la, fa; 195 char buf[2][32]; 196 static const struct timeval zero = {.tv_sec = 0, .tv_usec = 0}; 197 198 la.s_addr = v4->laddr; 199 fa.s_addr = v4->faddr; 200 201 snprintf(&buf[0][0], 32, "%s", inet_ntoa(la)); 202 snprintf(&buf[1][0], 32, "%s", inet_ntoa(fa)); 203 204 timersub(&vtw->expire, &now, &delta); 205 206 if (vtw->expire.tv_sec == 0 && vtw->expire.tv_usec == -1) { 207 dbg_printf("%15.15s:%d %15.15s:%d reclaimed\n", 208 buf[0], ntohs(v4->lport), 209 buf[1], ntohs(v4->fport)); 210 if (!(Vflag && vflag)) 211 return; 212 } else if (vtw->expire.tv_sec == 0) 213 return; 214 else if (timercmp(&delta, &zero, <) && !(Vflag && vflag)) { 215 dbg_printf("%15.15s:%d %15.15s:%d expired\n", 216 buf[0], ntohs(v4->lport), 217 buf[1], ntohs(v4->fport)); 218 return; 219 } else { 220 dbg_printf("%15.15s:%d %15.15s:%d expires in %.3fms\n", 221 buf[0], ntohs(v4->lport), 222 buf[1], ntohs(v4->fport), 223 delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0); 224 } 225 protopr0(0, 0, 0, 226 &la, v4->lport, 227 &fa, v4->fport, 228 TCPS_TIME_WAIT, "tcp", 0, &vtw->expire); 229 } 230 231 struct kinfo_pcb * 232 getpcblist_sysctl(const char *name, size_t *len) 233 { 234 int mib[8]; 235 size_t namelen = 0, size = 0; 236 char *mibname = NULL; 237 struct kinfo_pcb *pcblist; 238 239 memset(mib, 0, sizeof(mib)); 240 241 if (asprintf(&mibname, "net.inet%s.%s.pcblist", name + 3, name) == -1) 242 err(1, "asprintf"); 243 244 /* get dynamic pcblist node */ 245 if (prog_sysctlnametomib(mibname, mib, &namelen) == -1) { 246 if (errno == ENOENT) { 247 *len = 0; 248 return NULL; 249 } 250 251 err(1, "sysctlnametomib: %s", mibname); 252 } 253 254 free(mibname); 255 256 if (prog_sysctl(mib, __arraycount(mib), NULL, &size, NULL, 0) == -1) 257 err(1, "sysctl (query)"); 258 259 if ((pcblist = malloc(size)) == NULL) 260 err(1, "malloc"); 261 memset(pcblist, 0, size); 262 263 mib[6] = sizeof(*pcblist); 264 mib[7] = size / sizeof(*pcblist); 265 266 if (prog_sysctl(mib, __arraycount(mib), pcblist, &size, NULL, 0) == -1) 267 err(1, "sysctl (copy)"); 268 269 *len = size / sizeof(*pcblist); 270 return pcblist; 271 272 } 273 274 static struct kinfo_pcb * 275 getpcblist_kmem(u_long off, const char *name, size_t *len) 276 { 277 struct inpcbtable table; 278 struct inpcb *next, *prev; 279 struct in4pcb in4pcb; 280 struct inpcb *inp; 281 struct tcpcb tcpcb; 282 struct socket sockb; 283 int istcp = strcmp(name, "tcp") == 0; 284 struct kinfo_pcb *pcblist; 285 size_t size = 100, i; 286 struct sockaddr_in sin; 287 struct inpcbqueue *head; 288 289 if (off == 0) { 290 *len = 0; 291 return NULL; 292 } 293 294 kread(off, (char *)&table, sizeof table); 295 head = &table.inpt_queue; 296 next = TAILQ_FIRST(head); 297 prev = TAILQ_END(head); 298 299 pcblist = NULL; 300 if (reallocarr(&pcblist, size, sizeof(*pcblist)) != 0) 301 err(1, "reallocarr"); 302 303 i = 0; 304 while (next != TAILQ_END(head)) { 305 kread((u_long)next, (char *)&in4pcb, sizeof in4pcb); 306 prev = next; 307 inp = (struct inpcb *)&in4pcb; 308 next = TAILQ_NEXT(inp, inp_queue); 309 310 if (inp->inp_af != AF_INET) 311 continue; 312 313 kread((u_long)inp->inp_socket, (char *)&sockb, sizeof(sockb)); 314 if (istcp) { 315 kread((u_long)inp->inp_ppcb, 316 (char *)&tcpcb, sizeof (tcpcb)); 317 } 318 pcblist[i].ki_ppcbaddr = 319 istcp ? (uintptr_t) inp->inp_ppcb : (uintptr_t) prev; 320 pcblist[i].ki_rcvq = (uint64_t)sockb.so_rcv.sb_cc; 321 pcblist[i].ki_sndq = (uint64_t)sockb.so_snd.sb_cc; 322 323 sin.sin_addr = in4p_laddr(inp); 324 sin.sin_port = inp->inp_lport; 325 memcpy(&pcblist[i].ki_s, &sin, sizeof(sin)); 326 sin.sin_addr = in4p_faddr(inp); 327 sin.sin_port = inp->inp_fport; 328 memcpy(&pcblist[i].ki_d, &sin, sizeof(sin)); 329 pcblist[i].ki_tstate = tcpcb.t_state; 330 pcblist[i].ki_pflags = inp->inp_flags; 331 if (i++ == size) { 332 size += 100; 333 if (reallocarr(&pcblist, size, sizeof(*pcblist)) != 0) 334 err(1, "reallocarr"); 335 } 336 } 337 *len = i; 338 return pcblist; 339 } 340 341 void 342 protopr(u_long off, const char *name) 343 { 344 static int first = 1; 345 struct kinfo_pcb *pcblist; 346 size_t i, len; 347 348 compact = 0; 349 if (Aflag) { 350 if (!numeric_addr) 351 width = 18; 352 else { 353 width = 21; 354 compact = 1; 355 } 356 } else 357 width = 22; 358 359 if (use_sysctl) 360 pcblist = getpcblist_sysctl(name, &len); 361 else 362 pcblist = getpcblist_kmem(off, name, &len); 363 364 for (i = 0; i < len; i++) { 365 struct sockaddr_in src, dst; 366 367 memcpy(&src, &pcblist[i].ki_s, sizeof(src)); 368 memcpy(&dst, &pcblist[i].ki_d, sizeof(dst)); 369 370 if (!aflag && (inet_lnaof(dst.sin_addr) == INADDR_ANY)) 371 continue; 372 373 if (first) { 374 protoprhdr(); 375 first = 0; 376 } 377 protopr0((intptr_t) pcblist[i].ki_ppcbaddr, 378 pcblist[i].ki_rcvq, pcblist[i].ki_sndq, 379 &src.sin_addr, src.sin_port, 380 &dst.sin_addr, dst.sin_port, 381 pcblist[i].ki_tstate, name, 382 pcblist[i].ki_pflags, NULL); 383 } 384 385 free(pcblist); 386 387 if (strcmp(name, "tcp") == 0) { 388 struct timeval t; 389 timebase(&t); 390 gettimeofday(&now, NULL); 391 timersub(&now, &t, &now); 392 show_vtw_v4(print_vtw_v4); 393 } 394 } 395 396 /* 397 * Dump TCP statistics structure. 398 */ 399 void 400 tcp_stats(u_long off, const char *name) 401 { 402 uint64_t tcpstat[TCP_NSTATS]; 403 404 if (use_sysctl) { 405 size_t size = sizeof(tcpstat); 406 407 if (prog_sysctlbyname("net.inet.tcp.stats", tcpstat, &size, 408 NULL, 0) == -1 && errno != ENOMEM) 409 return; 410 } else { 411 warnx("%s stats not available via KVM.", name); 412 return; 413 } 414 415 printf ("%s:\n", name); 416 417 #define ps(f, m) if (tcpstat[f] || sflag <= 1) \ 418 printf(m, tcpstat[f]) 419 #define p(f, m) if (tcpstat[f] || sflag <= 1) \ 420 printf(m, tcpstat[f], plural(tcpstat[f])) 421 #define p2(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \ 422 printf(m, tcpstat[f1], plural(tcpstat[f1]), \ 423 tcpstat[f2], plural(tcpstat[f2])) 424 #define p2s(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \ 425 printf(m, tcpstat[f1], plural(tcpstat[f1]), \ 426 tcpstat[f2]) 427 #define p3(f, m) if (tcpstat[f] || sflag <= 1) \ 428 printf(m, tcpstat[f], plurales(tcpstat[f])) 429 430 p(TCP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n"); 431 p2(TCP_STAT_SNDPACK,TCP_STAT_SNDBYTE, 432 "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s)\n"); 433 p2(TCP_STAT_SNDREXMITPACK, TCP_STAT_SNDREXMITBYTE, 434 "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s) retransmitted\n"); 435 p2s(TCP_STAT_SNDACKS, TCP_STAT_DELACK, 436 "\t\t%" PRIu64 " ack-only packet%s (%" PRIu64 " delayed)\n"); 437 p(TCP_STAT_SNDURG, "\t\t%" PRIu64 " URG only packet%s\n"); 438 p(TCP_STAT_SNDPROBE, "\t\t%" PRIu64 " window probe packet%s\n"); 439 p(TCP_STAT_SNDWINUP, "\t\t%" PRIu64 " window update packet%s\n"); 440 p(TCP_STAT_SNDCTRL, "\t\t%" PRIu64 " control packet%s\n"); 441 p(TCP_STAT_SELFQUENCH, 442 "\t\t%" PRIu64 " send attempt%s resulted in self-quench\n"); 443 p(TCP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n"); 444 p2(TCP_STAT_RCVACKPACK, TCP_STAT_RCVACKBYTE, 445 "\t\t%" PRIu64 " ack%s (for %" PRIu64 " byte%s)\n"); 446 p(TCP_STAT_RCVDUPACK, "\t\t%" PRIu64 " duplicate ack%s\n"); 447 p(TCP_STAT_RCVACKTOOMUCH, "\t\t%" PRIu64 " ack%s for unsent data\n"); 448 p2(TCP_STAT_RCVPACK, TCP_STAT_RCVBYTE, 449 "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) received in-sequence\n"); 450 p2(TCP_STAT_RCVDUPPACK, TCP_STAT_RCVDUPBYTE, 451 "\t\t%" PRIu64 " completely duplicate packet%s (%" PRIu64 " byte%s)\n"); 452 p(TCP_STAT_PAWSDROP, "\t\t%" PRIu64 " old duplicate packet%s\n"); 453 p2(TCP_STAT_RCVPARTDUPPACK, TCP_STAT_RCVPARTDUPBYTE, 454 "\t\t%" PRIu64 " packet%s with some dup. data (%" PRIu64 " byte%s duped)\n"); 455 p2(TCP_STAT_RCVOOPACK, TCP_STAT_RCVOOBYTE, 456 "\t\t%" PRIu64 " out-of-order packet%s (%" PRIu64 " byte%s)\n"); 457 p2(TCP_STAT_RCVPACKAFTERWIN, TCP_STAT_RCVBYTEAFTERWIN, 458 "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) of data after window\n"); 459 p(TCP_STAT_RCVWINPROBE, "\t\t%" PRIu64 " window probe%s\n"); 460 p(TCP_STAT_RCVWINUPD, "\t\t%" PRIu64 " window update packet%s\n"); 461 p(TCP_STAT_RCVAFTERCLOSE, 462 "\t\t%" PRIu64 " packet%s received after close\n"); 463 p(TCP_STAT_RCVBADSUM, 464 "\t\t%" PRIu64 " discarded for bad checksum%s\n"); 465 p(TCP_STAT_RCVBADOFF, 466 "\t\t%" PRIu64 " discarded for bad header offset field%s\n"); 467 ps(TCP_STAT_RCVSHORT, 468 "\t\t%" PRIu64 " discarded because packet too short\n"); 469 p(TCP_STAT_CONNATTEMPT, "\t%" PRIu64 " connection request%s\n"); 470 p(TCP_STAT_ACCEPTS, "\t%" PRIu64 " connection accept%s\n"); 471 p(TCP_STAT_CONNECTS, 472 "\t%" PRIu64 " connection%s established (including accepts)\n"); 473 p2(TCP_STAT_CLOSED, TCP_STAT_DROPS, 474 "\t%" PRIu64 " connection%s closed (including %" PRIu64 " drop%s)\n"); 475 p(TCP_STAT_CONNDROPS, 476 "\t%" PRIu64 " embryonic connection%s dropped\n"); 477 p(TCP_STAT_DELAYED_FREE, "\t%" PRIu64 " delayed free%s of tcpcb\n"); 478 p2(TCP_STAT_RTTUPDATED, TCP_STAT_SEGSTIMED, 479 "\t%" PRIu64 " segment%s updated rtt (of %" PRIu64 " attempt%s)\n"); 480 p(TCP_STAT_REXMTTIMEO, "\t%" PRIu64 " retransmit timeout%s\n"); 481 p(TCP_STAT_TIMEOUTDROP, 482 "\t\t%" PRIu64 " connection%s dropped by rexmit timeout\n"); 483 p2(TCP_STAT_PERSISTTIMEO, TCP_STAT_PERSISTDROPS, 484 "\t%" PRIu64 " persist timeout%s (resulting in %" PRIu64 " dropped " 485 "connection%s)\n"); 486 p(TCP_STAT_KEEPTIMEO, "\t%" PRIu64 " keepalive timeout%s\n"); 487 p(TCP_STAT_KEEPPROBE, "\t\t%" PRIu64 " keepalive probe%s sent\n"); 488 p(TCP_STAT_KEEPDROPS, 489 "\t\t%" PRIu64 " connection%s dropped by keepalive\n"); 490 p(TCP_STAT_PREDACK, "\t%" PRIu64 " correct ACK header prediction%s\n"); 491 p(TCP_STAT_PREDDAT, 492 "\t%" PRIu64 " correct data packet header prediction%s\n"); 493 p3(TCP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n"); 494 ps(TCP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n"); 495 p(TCP_STAT_CONNSDRAINED, 496 "\t%" PRIu64 " connection%s drained due to memory shortage\n"); 497 p(TCP_STAT_PMTUBLACKHOLE, 498 "\t%" PRIu64 " PMTUD blackhole%s detected\n"); 499 500 p(TCP_STAT_BADSYN, "\t%" PRIu64 " bad connection attempt%s\n"); 501 ps(TCP_STAT_SC_ADDED, "\t%" PRIu64 " SYN cache entries added\n"); 502 p(TCP_STAT_SC_COLLISIONS, "\t\t%" PRIu64 " hash collision%s\n"); 503 ps(TCP_STAT_SC_COMPLETED, "\t\t%" PRIu64 " completed\n"); 504 ps(TCP_STAT_SC_ABORTED, 505 "\t\t%" PRIu64 " aborted (no space to build PCB)\n"); 506 ps(TCP_STAT_SC_TIMED_OUT, "\t\t%" PRIu64 " timed out\n"); 507 ps(TCP_STAT_SC_OVERFLOWED, 508 "\t\t%" PRIu64 " dropped due to overflow\n"); 509 ps(TCP_STAT_SC_BUCKETOVERFLOW, 510 "\t\t%" PRIu64 " dropped due to bucket overflow\n"); 511 ps(TCP_STAT_SC_RESET, "\t\t%" PRIu64 " dropped due to RST\n"); 512 ps(TCP_STAT_SC_UNREACH, 513 "\t\t%" PRIu64 " dropped due to ICMP unreachable\n"); 514 ps(TCP_STAT_SC_DELAYED_FREE, 515 "\t\t%" PRIu64 " delayed free of SYN cache entries\n"); 516 p(TCP_STAT_SC_RETRANSMITTED, 517 "\t%" PRIu64 " SYN,ACK%s retransmitted\n"); 518 p(TCP_STAT_SC_DUPESYN, 519 "\t%" PRIu64 " duplicate SYN%s received for entries " 520 "already in the cache\n"); 521 p(TCP_STAT_SC_DROPPED, 522 "\t%" PRIu64 " SYN%s dropped (no route or no space)\n"); 523 p(TCP_STAT_BADSIG, "\t%" PRIu64 " packet%s with bad signature\n"); 524 p(TCP_STAT_GOODSIG, "\t%" PRIu64 " packet%s with good signature\n"); 525 526 p(TCP_STAT_ECN_SHS, "\t%" PRIu64 " successful ECN handshake%s\n"); 527 p(TCP_STAT_ECN_CE, "\t%" PRIu64 " packet%s with ECN CE bit\n"); 528 p(TCP_STAT_ECN_ECT, "\t%" PRIu64 " packet%s ECN ECT(0) bit\n"); 529 #undef p 530 #undef ps 531 #undef p2 532 #undef p2s 533 #undef p3 534 show_vtw_stats(); 535 } 536 537 /* 538 * Dump UDP statistics structure. 539 */ 540 void 541 udp_stats(u_long off, const char *name) 542 { 543 uint64_t udpstat[UDP_NSTATS]; 544 uint64_t delivered; 545 546 if (use_sysctl) { 547 size_t size = sizeof(udpstat); 548 549 if (prog_sysctlbyname("net.inet.udp.stats", udpstat, &size, 550 NULL, 0) == -1 && errno != ENOMEM) 551 return; 552 } else { 553 warnx("%s stats not available via KVM.", name); 554 return; 555 } 556 557 printf ("%s:\n", name); 558 559 #define ps(f, m) if (udpstat[f] || sflag <= 1) \ 560 printf(m, udpstat[f]) 561 #define p(f, m) if (udpstat[f] || sflag <= 1) \ 562 printf(m, udpstat[f], plural(udpstat[f])) 563 #define p3(f, m) if (udpstat[f] || sflag <= 1) \ 564 printf(m, udpstat[f], plurales(udpstat[f])) 565 566 p(UDP_STAT_IPACKETS, "\t%" PRIu64 " datagram%s received\n"); 567 ps(UDP_STAT_HDROPS, "\t%" PRIu64 " with incomplete header\n"); 568 ps(UDP_STAT_BADLEN, "\t%" PRIu64 " with bad data length field\n"); 569 ps(UDP_STAT_BADSUM, "\t%" PRIu64 " with bad checksum\n"); 570 ps(UDP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n"); 571 p(UDP_STAT_NOPORTBCAST, "\t%" PRIu64 572 " broadcast/multicast datagram%s dropped due to no socket\n"); 573 ps(UDP_STAT_FULLSOCK, "\t%" PRIu64 574 " dropped due to full socket buffers\n"); 575 delivered = udpstat[UDP_STAT_IPACKETS] - 576 udpstat[UDP_STAT_HDROPS] - 577 udpstat[UDP_STAT_BADLEN] - 578 udpstat[UDP_STAT_BADSUM] - 579 udpstat[UDP_STAT_NOPORT] - 580 udpstat[UDP_STAT_NOPORTBCAST] - 581 udpstat[UDP_STAT_FULLSOCK]; 582 if (delivered || sflag <= 1) 583 printf("\t%" PRIu64 " delivered\n", delivered); 584 p3(UDP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n"); 585 p(UDP_STAT_OPACKETS, "\t%" PRIu64 " datagram%s output\n"); 586 587 #undef ps 588 #undef p 589 #undef p3 590 } 591 592 /* 593 * Dump IP statistics structure. 594 */ 595 void 596 ip_stats(u_long off, const char *name) 597 { 598 uint64_t ipstat[IP_NSTATS]; 599 600 if (use_sysctl) { 601 size_t size = sizeof(ipstat); 602 603 if (prog_sysctlbyname("net.inet.ip.stats", ipstat, &size, 604 NULL, 0) == -1 && errno != ENOMEM) 605 return; 606 } else { 607 warnx("%s stats not available via KVM.", name); 608 return; 609 } 610 611 printf("%s:\n", name); 612 613 #define ps(f, m) if (ipstat[f] || sflag <= 1) \ 614 printf(m, ipstat[f]) 615 #define p(f, m) if (ipstat[f] || sflag <= 1) \ 616 printf(m, ipstat[f], plural(ipstat[f])) 617 618 p(IP_STAT_TOTAL, "\t%" PRIu64 " total packet%s received\n"); 619 p(IP_STAT_BADSUM, "\t%" PRIu64 " bad header checksum%s\n"); 620 ps(IP_STAT_TOOSMALL, "\t%" PRIu64 " with size smaller than minimum\n"); 621 ps(IP_STAT_TOOSHORT, "\t%" PRIu64 " with data size < data length\n"); 622 ps(IP_STAT_TOOLONG, 623 "\t%" PRIu64 " with length > max ip packet size\n"); 624 ps(IP_STAT_BADHLEN, "\t%" PRIu64 " with header length < data size\n"); 625 ps(IP_STAT_BADLEN, "\t%" PRIu64 " with data length < header length\n"); 626 ps(IP_STAT_BADOPTIONS, "\t%" PRIu64 " with bad options\n"); 627 ps(IP_STAT_BADVERS, "\t%" PRIu64 " with incorrect version number\n"); 628 p(IP_STAT_FRAGMENTS, "\t%" PRIu64 " fragment%s received\n"); 629 p(IP_STAT_FRAGDROPPED, 630 "\t%" PRIu64 " fragment%s dropped (dup or out of space)\n"); 631 p(IP_STAT_RCVMEMDROP, 632 "\t%" PRIu64 " fragment%s dropped (out of ipqent)\n"); 633 p(IP_STAT_BADFRAGS, "\t%" PRIu64 " malformed fragment%s dropped\n"); 634 p(IP_STAT_FRAGTIMEOUT, 635 "\t%" PRIu64 " fragment%s dropped after timeout\n"); 636 p(IP_STAT_REASSEMBLED, "\t%" PRIu64 " packet%s reassembled ok\n"); 637 p(IP_STAT_DELIVERED, "\t%" PRIu64 " packet%s for this host\n"); 638 p(IP_STAT_NOPROTO, 639 "\t%" PRIu64 " packet%s for unknown/unsupported protocol\n"); 640 p(IP_STAT_FORWARD, "\t%" PRIu64 " packet%s forwarded"); 641 p(IP_STAT_FASTFORWARD, " (%" PRIu64 " packet%s fast forwarded)"); 642 if (ipstat[IP_STAT_FORWARD] || sflag <= 1) 643 putchar('\n'); 644 p(IP_STAT_CANTFORWARD, "\t%" PRIu64 " packet%s not forwardable\n"); 645 p(IP_STAT_REDIRECTSENT, "\t%" PRIu64 " redirect%s sent\n"); 646 p(IP_STAT_NOGIF, "\t%" PRIu64 " packet%s no matching gif found\n"); 647 p(IP_STAT_NOIPSEC, 648 "\t%" PRIu64 " packet%s no matching ipsecif found\n"); 649 p(IP_STAT_LOCALOUT, "\t%" PRIu64 " packet%s sent from this host\n"); 650 p(IP_STAT_RAWOUT, 651 "\t%" PRIu64 " packet%s sent with fabricated ip header\n"); 652 p(IP_STAT_ODROPPED, 653 "\t%" PRIu64 " output packet%s dropped due to no bufs, etc.\n"); 654 p(IP_STAT_NOROUTE, 655 "\t%" PRIu64 " output packet%s discarded due to no route\n"); 656 p(IP_STAT_FRAGMENTED, "\t%" PRIu64 " output datagram%s fragmented\n"); 657 p(IP_STAT_OFRAGMENTS, "\t%" PRIu64 " fragment%s created\n"); 658 p(IP_STAT_CANTFRAG, 659 "\t%" PRIu64 " datagram%s that can't be fragmented\n"); 660 p(IP_STAT_BADADDR, 661 "\t%" PRIu64 " datagram%s with bad address in header\n"); 662 p(IP_STAT_PFILDROP_IN, 663 "\t%" PRIu64 " input packet%s dropped by pfil\n"); 664 p(IP_STAT_PFILDROP_OUT, 665 "\t%" PRIu64 " output packet%s dropped by pfil\n"); 666 p(IP_STAT_IPSECDROP_IN, 667 "\t%" PRIu64 " input packet%s dropped by IPsec\n"); 668 p(IP_STAT_IPSECDROP_OUT, 669 "\t%" PRIu64 " output packet%s dropped by IPsec\n"); 670 p(IP_STAT_IFDROP, 671 "\t%" PRIu64 " input packet%s dropped due to interface state\n"); 672 p(IP_STAT_TIMXCEED, 673 "\t%" PRIu64 " packet%s dropped due to TTL exceeded\n"); 674 p(IP_STAT_IFNOADDR, 675 "\t%" PRIu64 " output packet%s dropped (no IP address)\n"); 676 p(IP_STAT_RTREJECT, 677 "\t%" PRIu64 " output packet%s discarded due to reject route\n"); 678 p(IP_STAT_BCASTDENIED, 679 "\t%" PRIu64 " output packet%s dropped (broadcast prohibited)\n"); 680 #undef ps 681 #undef p 682 } 683 684 /* 685 * Dump ICMP statistics. 686 */ 687 void 688 icmp_stats(u_long off, const char *name) 689 { 690 uint64_t icmpstat[ICMP_NSTATS]; 691 int i, first; 692 693 if (use_sysctl) { 694 size_t size = sizeof(icmpstat); 695 696 if (prog_sysctlbyname("net.inet.icmp.stats", icmpstat, &size, 697 NULL, 0) == -1 && errno != ENOMEM) 698 return; 699 } else { 700 warnx("%s stats not available via KVM.", name); 701 return; 702 } 703 704 printf("%s:\n", name); 705 706 #define p(f, m) if (icmpstat[f] || sflag <= 1) \ 707 printf(m, icmpstat[f], plural(icmpstat[f])) 708 709 p(ICMP_STAT_ERROR, "\t%" PRIu64 " call%s to icmp_error\n"); 710 p(ICMP_STAT_OLDICMP, "\t%" PRIu64 711 " error%s not generated because old message was icmp\n"); 712 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 713 if (icmpstat[ICMP_STAT_OUTHIST + i] != 0) { 714 if (first) { 715 printf("\tOutput histogram:\n"); 716 first = 0; 717 } 718 printf("\t\t%s: %" PRIu64 "\n", icmp_type[i], 719 icmpstat[ICMP_STAT_OUTHIST + i]); 720 } 721 p(ICMP_STAT_BADCODE, "\t%" PRIu64 " message%s with bad code fields\n"); 722 p(ICMP_STAT_TOOSHORT, "\t%" PRIu64 " message%s < minimum length\n"); 723 p(ICMP_STAT_CHECKSUM, "\t%" PRIu64 " bad checksum%s\n"); 724 p(ICMP_STAT_BADLEN, "\t%" PRIu64 " message%s with bad length\n"); 725 p(ICMP_STAT_BMCASTECHO, 726 "\t%" PRIu64 " multicast echo request%s ignored\n"); 727 p(ICMP_STAT_BMCASTTSTAMP, 728 "\t%" PRIu64 " multicast timestamp request%s ignored\n"); 729 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 730 if (icmpstat[ICMP_STAT_INHIST + i] != 0) { 731 if (first) { 732 printf("\tInput histogram:\n"); 733 first = 0; 734 } 735 printf("\t\t%s: %" PRIu64 "\n", icmp_type[i], 736 icmpstat[ICMP_STAT_INHIST + i]); 737 } 738 p(ICMP_STAT_REFLECT, "\t%" PRIu64 " message response%s generated\n"); 739 p(ICMP_STAT_PMTUCHG, "\t%" PRIu64 " path MTU change%s\n"); 740 #undef p 741 } 742 743 /* 744 * Dump IGMP statistics structure. 745 */ 746 void 747 igmp_stats(u_long off, const char *name) 748 { 749 uint64_t igmpstat[IGMP_NSTATS]; 750 751 if (use_sysctl) { 752 size_t size = sizeof(igmpstat); 753 754 if (prog_sysctlbyname("net.inet.igmp.stats", igmpstat, &size, 755 NULL, 0) == -1 && errno != ENOMEM) 756 return; 757 } else { 758 warnx("%s stats not available via KVM.", name); 759 return; 760 } 761 762 printf("%s:\n", name); 763 764 #define p(f, m) if (igmpstat[f] || sflag <= 1) \ 765 printf(m, igmpstat[f], plural(igmpstat[f])) 766 #define py(f, m) if (igmpstat[f] || sflag <= 1) \ 767 printf(m, igmpstat[f], igmpstat[f] != 1 ? "ies" : "y") 768 769 p(IGMP_STAT_RCV_TOTAL, "\t%" PRIu64 " message%s received\n"); 770 p(IGMP_STAT_RCV_TOOSHORT, 771 "\t%" PRIu64 " message%s received with too few bytes\n"); 772 p(IGMP_STAT_RCV_BADSUM, 773 "\t%" PRIu64 " message%s received with bad checksum\n"); 774 py(IGMP_STAT_RCV_QUERIES, 775 "\t%" PRIu64 " membership quer%s received\n"); 776 py(IGMP_STAT_RCV_BADQUERIES, 777 "\t%" PRIu64 " membership quer%s received with invalid field(s)\n"); 778 p(IGMP_STAT_RCV_REPORTS, 779 "\t%" PRIu64 " membership report%s received\n"); 780 p(IGMP_STAT_RCV_BADREPORTS, "\t%" PRIu64 781 " membership report%s received with invalid field(s)\n"); 782 p(IGMP_STAT_RCV_OURREPORTS, "\t%" PRIu64 783 " membership report%s received for groups to which we belong\n"); 784 p(IGMP_STAT_SND_REPORTS, 785 "\t%" PRIu64 " membership report%s sent\n"); 786 #undef p 787 #undef py 788 } 789 790 /* 791 * Dump CARP statistics structure. 792 */ 793 void 794 carp_stats(u_long off, const char *name) 795 { 796 uint64_t carpstat[CARP_NSTATS]; 797 798 if (use_sysctl) { 799 size_t size = sizeof(carpstat); 800 801 if (prog_sysctlbyname("net.inet.carp.stats", carpstat, &size, 802 NULL, 0) == -1 && errno != ENOMEM) 803 return; 804 } else { 805 warnx("%s stats not available via KVM.", name); 806 return; 807 } 808 809 printf("%s:\n", name); 810 811 #define p(f, m) if (carpstat[f] || sflag <= 1) \ 812 printf(m, carpstat[f], plural(carpstat[f])) 813 #define p2(f, m) if (carpstat[f] || sflag <= 1) \ 814 printf(m, carpstat[f]) 815 816 p(CARP_STAT_IPACKETS, "\t%" PRIu64 " packet%s received (IPv4)\n"); 817 p(CARP_STAT_IPACKETS6, "\t%" PRIu64 " packet%s received (IPv6)\n"); 818 p(CARP_STAT_BADIF, 819 "\t\t%" PRIu64 " packet%s discarded for bad interface\n"); 820 p(CARP_STAT_BADTTL, 821 "\t\t%" PRIu64 " packet%s discarded for wrong TTL\n"); 822 p(CARP_STAT_HDROPS, "\t\t%" PRIu64 " packet%s shorter than header\n"); 823 p(CARP_STAT_BADSUM, 824 "\t\t%" PRIu64 " packet%s discarded for bad checksum\n"); 825 p(CARP_STAT_BADVER, 826 "\t\t%" PRIu64 " packet%s discarded with a bad version\n"); 827 p2(CARP_STAT_BADLEN, 828 "\t\t%" PRIu64 " discarded because packet was too short\n"); 829 p(CARP_STAT_BADAUTH, 830 "\t\t%" PRIu64 " packet%s discarded for bad authentication\n"); 831 p(CARP_STAT_BADVHID, 832 "\t\t%" PRIu64 " packet%s discarded for bad vhid\n"); 833 p(CARP_STAT_BADADDRS, "\t\t%" PRIu64 834 " packet%s discarded because of a bad address list\n"); 835 p(CARP_STAT_OPACKETS, "\t%" PRIu64 " packet%s sent (IPv4)\n"); 836 p(CARP_STAT_OPACKETS6, "\t%" PRIu64 " packet%s sent (IPv6)\n"); 837 p2(CARP_STAT_ONOMEM, 838 "\t\t%" PRIu64 " send failed due to mbuf memory error\n"); 839 #undef p 840 #undef p2 841 } 842 843 /* 844 * Dump PIM statistics structure. 845 */ 846 void 847 pim_stats(u_long off, const char *name) 848 { 849 struct pimstat pimstat; 850 851 if (off == 0) 852 return; 853 if (kread(off, (char *)&pimstat, sizeof (pimstat)) != 0) { 854 /* XXX: PIM is probably not enabled in the kernel */ 855 return; 856 } 857 858 printf("%s:\n", name); 859 860 #define p(f, m) if (pimstat.f || sflag <= 1) \ 861 printf(m, pimstat.f, plural(pimstat.f)) 862 863 p(pims_rcv_total_msgs, "\t%" PRIu64 " message%s received\n"); 864 p(pims_rcv_total_bytes, "\t%" PRIu64 " byte%s received\n"); 865 p(pims_rcv_tooshort, 866 "\t%" PRIu64 " message%s received with too few bytes\n"); 867 p(pims_rcv_badsum, 868 "\t%" PRIu64 " message%s received with bad checksum\n"); 869 p(pims_rcv_badversion, 870 "\t%" PRIu64 " message%s received with bad version\n"); 871 p(pims_rcv_registers_msgs, 872 "\t%" PRIu64 " data register message%s received\n"); 873 p(pims_rcv_registers_bytes, 874 "\t%" PRIu64 " data register byte%s received\n"); 875 p(pims_rcv_registers_wrongiif, 876 "\t%" PRIu64 " data register message%s received on wrong iif\n"); 877 p(pims_rcv_badregisters, 878 "\t%" PRIu64 " bad register%s received\n"); 879 p(pims_snd_registers_msgs, 880 "\t%" PRIu64 " data register message%s sent\n"); 881 p(pims_snd_registers_bytes, 882 "\t%" PRIu64 " data register byte%s sent\n"); 883 #undef p 884 } 885 886 /* 887 * Dump the ARP statistics structure. 888 */ 889 void 890 arp_stats(u_long off, const char *name) 891 { 892 uint64_t arpstat[ARP_NSTATS]; 893 894 if (use_sysctl) { 895 size_t size = sizeof(arpstat); 896 897 if (prog_sysctlbyname("net.inet.arp.stats", arpstat, &size, 898 NULL, 0) == -1 && errno != ENOMEM) 899 return; 900 } else { 901 warnx("%s stats not available via KVM.", name); 902 return; 903 } 904 905 printf("%s:\n", name); 906 907 #define ps(f, m) if (arpstat[f] || sflag <= 1) \ 908 printf(m, arpstat[f]) 909 #define p(f, m) if (arpstat[f] || sflag <= 1) \ 910 printf(m, arpstat[f], plural(arpstat[f])) 911 912 p(ARP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n"); 913 p(ARP_STAT_SNDREPLY, "\t\t%" PRIu64 " reply packet%s\n"); 914 p(ARP_STAT_SENDREQUEST, "\t\t%" PRIu64 " request packet%s\n"); 915 916 p(ARP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n"); 917 p(ARP_STAT_RCVREPLY, "\t\t%" PRIu64 " reply packet%s\n"); 918 p(ARP_STAT_RCVREQUEST, "\t\t%" PRIu64 " valid request packet%s\n"); 919 p(ARP_STAT_RCVMCAST, "\t\t%" PRIu64 " broadcast/multicast packet%s\n"); 920 p(ARP_STAT_RCVBADPROTO, 921 "\t\t%" PRIu64 " packet%s with unknown protocol type\n"); 922 p(ARP_STAT_RCVBADLEN, 923 "\t\t%" PRIu64 " packet%s with bad (short) length\n"); 924 p(ARP_STAT_RCVZEROTPA, 925 "\t\t%" PRIu64 " packet%s with null target IP address\n"); 926 p(ARP_STAT_RCVZEROSPA, 927 "\t\t%" PRIu64 " packet%s with null source IP address\n"); 928 ps(ARP_STAT_RCVNOINT, 929 "\t\t%" PRIu64 " could not be mapped to an interface\n"); 930 p(ARP_STAT_RCVLOCALSHA, 931 "\t\t%" PRIu64 " packet%s sourced from a local hardware " 932 "address\n"); 933 p(ARP_STAT_RCVBCASTSHA, "\t\t%" PRIu64 " packet%s with a broadcast " 934 "source hardware address\n"); 935 p(ARP_STAT_RCVLOCALSPA, 936 "\t\t%" PRIu64 " duplicate%s for a local IP address\n"); 937 p(ARP_STAT_RCVOVERPERM, 938 "\t\t%" PRIu64 " attempt%s to overwrite a static entry\n"); 939 p(ARP_STAT_RCVOVERINT, 940 "\t\t%" PRIu64 " packet%s received on wrong interface\n"); 941 p(ARP_STAT_RCVOVER, "\t\t%" PRIu64 " entry%s overwritten\n"); 942 p(ARP_STAT_RCVLENCHG, 943 "\t\t%" PRIu64 " change%s in hardware address length\n"); 944 945 p(ARP_STAT_DFRTOTAL, 946 "\t%" PRIu64 " packet%s deferred pending ARP resolution\n"); 947 ps(ARP_STAT_DFRSENT, "\t\t%" PRIu64 " sent\n"); 948 ps(ARP_STAT_DFRDROPPED, "\t\t%" PRIu64 " dropped\n"); 949 950 p(ARP_STAT_ALLOCFAIL, "\t%" PRIu64 " failure%s to allocate llinfo\n"); 951 952 #undef ps 953 #undef p 954 } 955 956 /* 957 * Pretty print an Internet address (net address + port). 958 * Take numeric_addr and numeric_port into consideration. 959 */ 960 void 961 inetprint(struct in_addr *in, uint16_t port, const char *proto, 962 int port_numeric) 963 { 964 struct servent *sp = 0; 965 char line[80], *cp; 966 size_t space; 967 968 (void)snprintf(line, sizeof line, "%.*s.", 969 (Aflag && !numeric_addr) ? 12 : 16, inetname(in)); 970 cp = strchr(line, '\0'); 971 if (!port_numeric && port) 972 sp = getservbyport((int)port, proto); 973 space = sizeof line - (cp-line); 974 if (sp || port == 0) 975 (void)snprintf(cp, space, "%s", sp ? sp->s_name : "*"); 976 else 977 (void)snprintf(cp, space, "%u", ntohs(port)); 978 (void)printf(" %-*.*s", width, width, line); 979 } 980 981 /* 982 * Construct an Internet address representation. 983 * If numeric_addr has been supplied, give 984 * numeric value, otherwise try for symbolic name. 985 */ 986 char * 987 inetname(struct in_addr *inp) 988 { 989 char *cp; 990 static char line[50]; 991 struct hostent *hp; 992 struct netent *np; 993 static char domain[MAXHOSTNAMELEN + 1]; 994 static int first = 1; 995 996 if (first && !numeric_addr) { 997 first = 0; 998 if (gethostname(domain, sizeof domain) == 0) { 999 domain[sizeof(domain) - 1] = '\0'; 1000 if ((cp = strchr(domain, '.'))) 1001 (void) strlcpy(domain, cp + 1, sizeof(domain)); 1002 else 1003 domain[0] = 0; 1004 } else 1005 domain[0] = 0; 1006 } 1007 cp = 0; 1008 if (!numeric_addr && inp->s_addr != INADDR_ANY) { 1009 int net = inet_netof(*inp); 1010 int lna = inet_lnaof(*inp); 1011 1012 if (lna == INADDR_ANY) { 1013 np = getnetbyaddr(net, AF_INET); 1014 if (np) 1015 cp = np->n_name; 1016 } 1017 if (cp == 0) { 1018 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 1019 if (hp) { 1020 if ((cp = strchr(hp->h_name, '.')) && 1021 !strcmp(cp + 1, domain)) 1022 *cp = 0; 1023 cp = hp->h_name; 1024 } 1025 } 1026 } 1027 if (inp->s_addr == INADDR_ANY) 1028 strlcpy(line, "*", sizeof line); 1029 else if (cp) 1030 strlcpy(line, cp, sizeof line); 1031 else { 1032 inp->s_addr = ntohl(inp->s_addr); 1033 #define C(x) ((x) & 0xff) 1034 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 1035 C(inp->s_addr >> 24), C(inp->s_addr >> 16), 1036 C(inp->s_addr >> 8), C(inp->s_addr)); 1037 #undef C 1038 } 1039 return line; 1040 } 1041 1042 /* 1043 * Dump the contents of a TCP PCB. 1044 */ 1045 void 1046 tcp_dump(u_long off, const char *name, u_long pcbaddr) 1047 { 1048 callout_impl_t *ci; 1049 struct tcpcb tcpcb; 1050 int i, hardticks; 1051 struct kinfo_pcb *pcblist; 1052 size_t j, len; 1053 1054 if (use_sysctl) 1055 pcblist = getpcblist_sysctl(name, &len); 1056 else 1057 pcblist = getpcblist_kmem(off, name, &len); 1058 1059 for (j = 0; j < len; j++) 1060 if (pcblist[j].ki_ppcbaddr == pcbaddr) 1061 break; 1062 free(pcblist); 1063 1064 if (j == len) 1065 errx(1, "0x%lx is not a valid pcb address", pcbaddr); 1066 1067 kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb)); 1068 hardticks = get_hardticks(); 1069 1070 printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr); 1071 1072 printf("Timers:\n"); 1073 for (i = 0; i < TCPT_NTIMERS; i++) { 1074 char buf[128]; 1075 ci = (callout_impl_t *)&tcpcb.t_timer[i]; 1076 snprintb(buf, sizeof(buf), CALLOUT_FMT, ci->c_flags); 1077 printf("\t%s\t%s", tcptimers[i], buf); 1078 if (ci->c_flags & CALLOUT_PENDING) 1079 printf("\t%d\n", ci->c_time - hardticks); 1080 else 1081 printf("\n"); 1082 } 1083 printf("\n\n"); 1084 1085 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 1086 printf("State: %d", tcpcb.t_state); 1087 else 1088 printf("State: %s", tcpstates[tcpcb.t_state]); 1089 printf(", flags 0x%x, inpcb 0x%lx\n\n", tcpcb.t_flags, 1090 (u_long)tcpcb.t_inpcb); 1091 1092 printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift, 1093 tcpcb.t_rxtcur, tcpcb.t_dupacks); 1094 printf("peermss %u, ourmss %u, segsz %u, segqlen %u\n\n", 1095 tcpcb.t_peermss, tcpcb.t_ourmss, tcpcb.t_segsz, tcpcb.t_segqlen); 1096 1097 printf("snd_una %u, snd_nxt %u, snd_up %u\n", 1098 tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up); 1099 printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n", 1100 tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd); 1101 1102 printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n", 1103 tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs); 1104 1105 printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n", 1106 tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh); 1107 1108 printf("rcvtime %u, rtttime %u, rtseq %u, srtt %d, rttvar %d, " 1109 "rttmin %d, max_sndwnd %lu\n\n", tcpcb.t_rcvtime, tcpcb.t_rtttime, 1110 tcpcb.t_rtseq, tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin, 1111 tcpcb.max_sndwnd); 1112 1113 printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags, 1114 tcpcb.t_iobc, tcpcb.t_softerror); 1115 1116 printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n", 1117 tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale, 1118 tcpcb.requested_s_scale); 1119 printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n", 1120 tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent); 1121 } 1122
Indexes created Sat Sep 20 22:09:52 GMT 2025