usr.bin/netstat/inet.c

   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  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if 0
  31 #ifndef lint
  32 static char sccsid[] = "@(#)inet.c      8.5 (Berkeley) 5/24/95";
  33 #endif /* not lint */
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/param.h>
  40 #include <sys/queue.h>
  41 #include <sys/domain.h>
  42 #include <sys/protosw.h>
  43 #include <sys/socket.h>
  44 #include <sys/socketvar.h>
  45 #include <sys/sysctl.h>
  46
  47 #include <net/route.h>
  48 #include <net/if_arp.h>
  49 #include <netinet/in.h>
  50 #include <netinet/in_systm.h>
  51 #include <netinet/ip.h>
  52 #include <netinet/ip_carp.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/pim_var.h>
  62 #include <netinet/tcp.h>
  63 #include <netinet/tcpip.h>
  64 #include <netinet/tcp_seq.h>
  65 #define TCPSTATES
  66 #include <netinet/tcp_fsm.h>
  67 #include <netinet/tcp_timer.h>
  68 #include <netinet/tcp_var.h>
  69 #include <netinet/tcp_debug.h>
  70 #include <netinet/udp.h>
  71 #include <netinet/udp_var.h>
  72
  73 #include <arpa/inet.h>
  74 #include <err.h>
  75 #include <errno.h>
  76 #include <libutil.h>
  77 #include <netdb.h>
  78 #include <stdint.h>
  79 #include <stdio.h>
  80 #include <stdlib.h>
  81 #include <string.h>
  82 #include <unistd.h>
  83 #include "netstat.h"
  84
  85 char    *inetname(struct in_addr *);
  86 void    inetprint(struct in_addr *, int, const char *, int);
  87 #ifdef INET6
  88 static int udp_done, tcp_done, sdp_done;
  89 #endif /* INET6 */
  90
  91 static int
  92 pcblist_sysctl(int proto, const char *name, char **bufp, int istcp)
  93 {
  94         const char *mibvar;
  95         char *buf;
  96         size_t len;
  97
  98         switch (proto) {
  99         case IPPROTO_TCP:
 100                 mibvar = "net.inet.tcp.pcblist";
 101                 break;
 102         case IPPROTO_UDP:
 103                 mibvar = "net.inet.udp.pcblist";
 104                 break;
 105         case IPPROTO_DIVERT:
 106                 mibvar = "net.inet.divert.pcblist";
 107                 break;
 108         default:
 109                 mibvar = "net.inet.raw.pcblist";
 110                 break;
 111         }
 112         if (strncmp(name, "sdp", 3) == 0)
 113                 mibvar = "net.inet.sdp.pcblist";
 114         len = 0;
 115         if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 116                 if (errno != ENOENT)
 117                         warn("sysctl: %s", mibvar);
 118                 return (0);
 119         }
 120         if ((buf = malloc(len)) == 0) {
 121                 warnx("malloc %lu bytes", (u_long)len);
 122                 return (0);
 123         }
 124         if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 125                 warn("sysctl: %s", mibvar);
 126                 free(buf);
 127                 return (0);
 128         }
 129         *bufp = buf;
 130         return (1);
 131 }
 132
 133 /*
 134  * Copied directly from uipc_socket2.c.  We leave out some fields that are in
 135  * nested structures that aren't used to avoid extra work.
 136  */
 137 static void
 138 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb)
 139 {
 140         xsb->sb_cc = sb->sb_cc;
 141         xsb->sb_hiwat = sb->sb_hiwat;
 142         xsb->sb_mbcnt = sb->sb_mbcnt;
 143         xsb->sb_mcnt = sb->sb_mcnt;
 144         xsb->sb_ccnt = sb->sb_ccnt;
 145         xsb->sb_mbmax = sb->sb_mbmax;
 146         xsb->sb_lowat = sb->sb_lowat;
 147         xsb->sb_flags = sb->sb_flags;
 148         xsb->sb_timeo = sb->sb_timeo;
 149 }
 150
 151 int
 152 sotoxsocket(struct socket *so, struct xsocket *xso)
 153 {
 154         struct protosw proto;
 155         struct domain domain;
 156
 157         bzero(xso, sizeof *xso);
 158         xso->xso_len = sizeof *xso;
 159         xso->xso_so = so;
 160         xso->so_type = so->so_type;
 161         xso->so_options = so->so_options;
 162         xso->so_linger = so->so_linger;
 163         xso->so_state = so->so_state;
 164         xso->so_pcb = so->so_pcb;
 165         if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0)
 166                 return (-1);
 167         xso->xso_protocol = proto.pr_protocol;
 168         if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0)
 169                 return (-1);
 170         xso->xso_family = domain.dom_family;
 171         xso->so_qlen = so->so_qlen;
 172         xso->so_incqlen = so->so_incqlen;
 173         xso->so_qlimit = so->so_qlimit;
 174         xso->so_timeo = so->so_timeo;
 175         xso->so_error = so->so_error;
 176         xso->so_oobmark = so->so_oobmark;
 177         sbtoxsockbuf(&so->so_snd, &xso->so_snd);
 178         sbtoxsockbuf(&so->so_rcv, &xso->so_rcv);
 179         return (0);
 180 }
 181
 182 static int
 183 pcblist_kvm(u_long off, char **bufp, int istcp)
 184 {
 185         struct inpcbinfo pcbinfo;
 186         struct inpcbhead listhead;
 187         struct inpcb *inp;
 188         struct xinpcb xi;
 189         struct xinpgen xig;
 190         struct xtcpcb xt;
 191         struct socket so;
 192         struct xsocket *xso;
 193         char *buf, *p;
 194         size_t len;
 195
 196         if (off == 0)
 197                 return (0);
 198         kread(off, &pcbinfo, sizeof(pcbinfo));
 199         if (istcp)
 200                 len = 2 * sizeof(xig) +
 201                     (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
 202                     sizeof(struct xtcpcb);
 203         else
 204                 len = 2 * sizeof(xig) +
 205                     (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
 206                     sizeof(struct xinpcb);
 207         if ((buf = malloc(len)) == 0) {
 208                 warnx("malloc %lu bytes", (u_long)len);
 209                 return (0);
 210         }
 211         p = buf;
 212
 213 #define COPYOUT(obj, size) do {                                         \
 214         if (len < (size)) {                                             \
 215                 warnx("buffer size exceeded");                          \
 216                 goto fail;                                              \
 217         }                                                               \
 218         bcopy((obj), p, (size));                                        \
 219         len -= (size);                                                  \
 220         p += (size);                                                    \
 221 } while (0)
 222
 223 #define KREAD(off, buf, len) do {                                       \
 224         if (kread((uintptr_t)(off), (buf), (len)) != 0)                 \
 225                 goto fail;                                              \
 226 } while (0)
 227
 228         /* Write out header. */
 229         xig.xig_len = sizeof xig;
 230         xig.xig_count = pcbinfo.ipi_count;
 231         xig.xig_gen = pcbinfo.ipi_gencnt;
 232         xig.xig_sogen = 0;
 233         COPYOUT(&xig, sizeof xig);
 234
 235         /* Walk the PCB list. */
 236         xt.xt_len = sizeof xt;
 237         xi.xi_len = sizeof xi;
 238         if (istcp)
 239                 xso = &xt.xt_socket;
 240         else
 241                 xso = &xi.xi_socket;
 242         KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead));
 243         LIST_FOREACH(inp, &listhead, inp_list) {
 244                 if (istcp) {
 245                         KREAD(inp, &xt.xt_inp, sizeof(*inp));
 246                         inp = &xt.xt_inp;
 247                 } else {
 248                         KREAD(inp, &xi.xi_inp, sizeof(*inp));
 249                         inp = &xi.xi_inp;
 250                 }
 251
 252                 if (inp->inp_gencnt > pcbinfo.ipi_gencnt)
 253                         continue;
 254
 255                 if (istcp) {
 256                         if (inp->inp_ppcb == NULL)
 257                                 bzero(&xt.xt_tp, sizeof xt.xt_tp);
 258                         else if (inp->inp_flags & INP_TIMEWAIT) {
 259                                 bzero(&xt.xt_tp, sizeof xt.xt_tp);
 260                                 xt.xt_tp.t_state = TCPS_TIME_WAIT;
 261                         } else
 262                                 KREAD(inp->inp_ppcb, &xt.xt_tp,
 263                                     sizeof xt.xt_tp);
 264                 }
 265                 if (inp->inp_socket) {
 266                         KREAD(inp->inp_socket, &so, sizeof(so));
 267                         if (sotoxsocket(&so, xso) != 0)
 268                                 goto fail;
 269                 } else {
 270                         bzero(xso, sizeof(*xso));
 271                         if (istcp)
 272                                 xso->xso_protocol = IPPROTO_TCP;
 273                 }
 274                 if (istcp)
 275                         COPYOUT(&xt, sizeof xt);
 276                 else
 277                         COPYOUT(&xi, sizeof xi);
 278         }
 279
 280         /* Reread the pcbinfo and write out the footer. */
 281         kread(off, &pcbinfo, sizeof(pcbinfo));
 282         xig.xig_count = pcbinfo.ipi_count;
 283         xig.xig_gen = pcbinfo.ipi_gencnt;
 284         COPYOUT(&xig, sizeof xig);
 285
 286         *bufp = buf;
 287         return (1);
 288
 289 fail:
 290         free(buf);
 291         return (0);
 292 #undef COPYOUT
 293 #undef KREAD
 294 }
 295
 296 /*
 297  * Print a summary of connections related to an Internet
 298  * protocol.  For TCP, also give state of connection.
 299  * Listening processes (aflag) are suppressed unless the
 300  * -a (all) flag is specified.
 301  */
 302 void
 303 protopr(u_long off, const char *name, int af1, int proto)
 304 {
 305         int istcp;
 306         static int first = 1;
 307         char *buf;
 308         const char *vchar;
 309         struct tcpcb *tp = NULL;
 310         struct inpcb *inp;
 311         struct xinpgen *xig, *oxig;
 312         struct xsocket *so;
 313         struct xtcp_timer *timer;
 314
 315         istcp = 0;
 316         switch (proto) {
 317         case IPPROTO_TCP:
 318 #ifdef INET6
 319                 if (strncmp(name, "sdp", 3) != 0) {
 320                         if (tcp_done != 0)
 321                                 return;
 322                         else
 323                                 tcp_done = 1;
 324                 } else {
 325                         if (sdp_done != 0)
 326                                 return;
 327                         else
 328                                 sdp_done = 1;
 329                 }
 330 #endif
 331                 istcp = 1;
 332                 break;
 333         case IPPROTO_UDP:
 334 #ifdef INET6
 335                 if (udp_done != 0)
 336                         return;
 337                 else
 338                         udp_done = 1;
 339 #endif
 340                 break;
 341         }
 342         if (live) {
 343                 if (!pcblist_sysctl(proto, name, &buf, istcp))
 344                         return;
 345         } else {
 346                 if (!pcblist_kvm(off, &buf, istcp))
 347                         return;
 348         }
 349
 350         oxig = xig = (struct xinpgen *)buf;
 351         for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
 352              xig->xig_len > sizeof(struct xinpgen);
 353              xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
 354                 if (istcp) {
 355                         timer = &((struct xtcpcb *)xig)->xt_timer;
 356                         tp = &((struct xtcpcb *)xig)->xt_tp;
 357                         inp = &((struct xtcpcb *)xig)->xt_inp;
 358                         so = &((struct xtcpcb *)xig)->xt_socket;
 359                 } else {
 360                         inp = &((struct xinpcb *)xig)->xi_inp;
 361                         so = &((struct xinpcb *)xig)->xi_socket;
 362                         timer = NULL;
 363                 }
 364
 365                 /* Ignore sockets for protocols other than the desired one. */
 366                 if (so->xso_protocol != proto)
 367                         continue;
 368
 369                 /* Ignore PCBs which were freed during copyout. */
 370                 if (inp->inp_gencnt > oxig->xig_gen)
 371                         continue;
 372
 373                 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
 374 #ifdef INET6
 375                     || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
 376 #endif /* INET6 */
 377                     || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
 378 #ifdef INET6
 379                                           && (inp->inp_vflag & INP_IPV6) == 0
 380 #endif /* INET6 */
 381                         ))
 382                     )
 383                         continue;
 384                 if (!aflag &&
 385                     (
 386                      (istcp && tp->t_state == TCPS_LISTEN)
 387                      || (af1 == AF_INET &&
 388                       inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 389 #ifdef INET6
 390                      || (af1 == AF_INET6 &&
 391                          IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 392 #endif /* INET6 */
 393                      || (af1 == AF_UNSPEC &&
 394                          (((inp->inp_vflag & INP_IPV4) != 0 &&
 395                            inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 396 #ifdef INET6
 397                           || ((inp->inp_vflag & INP_IPV6) != 0 &&
 398                               IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 399 #endif
 400                           ))
 401                      ))
 402                         continue;
 403
 404                 if (first) {
 405                         if (!Lflag) {
 406                                 printf("Active Internet connections");
 407                                 if (aflag)
 408                                         printf(" (including servers)");
 409                         } else
 410                                 printf(
 411         "Current listen queue sizes (qlen/incqlen/maxqlen)");
 412                         putchar('\n');
 413                         if (Aflag)
 414                                 printf("%-*s ", 2 * (int)sizeof(void *), "Tcpcb");
 415                         if (Lflag)
 416                                 printf((Aflag && !Wflag) ?
 417                                     "%-5.5s %-14.14s %-18.18s" :
 418                                     "%-5.5s %-14.14s %-22.22s",
 419                                     "Proto", "Listen", "Local Address");
 420                         else if (Tflag)
 421                                 printf((Aflag && !Wflag) ?
 422                             "%-5.5s %-6.6s %-6.6s %-6.6s %-18.18s %s" :
 423                             "%-5.5s %-6.6s %-6.6s %-6.6s %-22.22s %s",
 424                                     "Proto", "Rexmit", "OOORcv", "0-win",
 425                                     "Local Address", "Foreign Address");
 426                         else {
 427                                 printf((Aflag && !Wflag) ?
 428                                        "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s" :
 429                                        "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s",
 430                                        "Proto", "Recv-Q", "Send-Q",
 431                                        "Local Address", "Foreign Address");
 432                                 if (!xflag)
 433                                         printf(" (state)");
 434                         }
 435                         if (xflag) {
 436                                 printf(" %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s",
 437                                        "R-MBUF", "S-MBUF", "R-CLUS",
 438                                        "S-CLUS", "R-HIWA", "S-HIWA",
 439                                        "R-LOWA", "S-LOWA", "R-BCNT",
 440                                        "S-BCNT", "R-BMAX", "S-BMAX");
 441                                 printf(" %7.7s %7.7s %7.7s %7.7s %7.7s %7.7s",
 442                                        "rexmt", "persist", "keep",
 443                                        "2msl", "delack", "rcvtime");
 444                         }
 445                         putchar('\n');
 446                         first = 0;
 447                 }
 448                 if (Lflag && so->so_qlimit == 0)
 449                         continue;
 450                 if (Aflag) {
 451                         if (istcp)
 452                                 printf("%*lx ", 2 * (int)sizeof(void *), (u_long)inp->inp_ppcb);
 453                         else
 454                                 printf("%*lx ", 2 * (int)sizeof(void *), (u_long)so->so_pcb);
 455                 }
 456 #ifdef INET6
 457                 if ((inp->inp_vflag & INP_IPV6) != 0)
 458                         vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 459                             "46" : "6 ";
 460                 else
 461 #endif
 462                 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 463                     "4 " : "  ";
 464                 if (istcp && (tp->t_flags & TF_TOE) != 0)
 465                         printf("%-3.3s%-2.2s ", "toe", vchar);
 466                 else
 467                         printf("%-3.3s%-2.2s ", name, vchar);
 468                 if (Lflag) {
 469                         char buf1[15];
 470
 471                         snprintf(buf1, 15, "%d/%d/%d", so->so_qlen,
 472                             so->so_incqlen, so->so_qlimit);
 473                         printf("%-14.14s ", buf1);
 474                 } else if (Tflag) {
 475                         if (istcp)
 476                                 printf("%6u %6u %6u ", tp->t_sndrexmitpack,
 477                                        tp->t_rcvoopack, tp->t_sndzerowin);
 478                 } else {
 479                         printf("%6u %6u ", so->so_rcv.sb_cc, so->so_snd.sb_cc);
 480                 }
 481                 if (numeric_port) {
 482                         if (inp->inp_vflag & INP_IPV4) {
 483                                 inetprint(&inp->inp_laddr, (int)inp->inp_lport,
 484                                     name, 1);
 485                                 if (!Lflag)
 486                                         inetprint(&inp->inp_faddr,
 487                                             (int)inp->inp_fport, name, 1);
 488                         }
 489 #ifdef INET6
 490                         else if (inp->inp_vflag & INP_IPV6) {
 491                                 inet6print(&inp->in6p_laddr,
 492                                     (int)inp->inp_lport, name, 1);
 493                                 if (!Lflag)
 494                                         inet6print(&inp->in6p_faddr,
 495                                             (int)inp->inp_fport, name, 1);
 496                         } /* else nothing printed now */
 497 #endif /* INET6 */
 498                 } else if (inp->inp_flags & INP_ANONPORT) {
 499                         if (inp->inp_vflag & INP_IPV4) {
 500                                 inetprint(&inp->inp_laddr, (int)inp->inp_lport,
 501                                     name, 1);
 502                                 if (!Lflag)
 503                                         inetprint(&inp->inp_faddr,
 504                                             (int)inp->inp_fport, name, 0);
 505                         }
 506 #ifdef INET6
 507                         else if (inp->inp_vflag & INP_IPV6) {
 508                                 inet6print(&inp->in6p_laddr,
 509                                     (int)inp->inp_lport, name, 1);
 510                                 if (!Lflag)
 511                                         inet6print(&inp->in6p_faddr,
 512                                             (int)inp->inp_fport, name, 0);
 513                         } /* else nothing printed now */
 514 #endif /* INET6 */
 515                 } else {
 516                         if (inp->inp_vflag & INP_IPV4) {
 517                                 inetprint(&inp->inp_laddr, (int)inp->inp_lport,
 518                                     name, 0);
 519                                 if (!Lflag)
 520                                         inetprint(&inp->inp_faddr,
 521                                             (int)inp->inp_fport, name,
 522                                             inp->inp_lport != inp->inp_fport);
 523                         }
 524 #ifdef INET6
 525                         else if (inp->inp_vflag & INP_IPV6) {
 526                                 inet6print(&inp->in6p_laddr,
 527                                     (int)inp->inp_lport, name, 0);
 528                                 if (!Lflag)
 529                                         inet6print(&inp->in6p_faddr,
 530                                             (int)inp->inp_fport, name,
 531                                             inp->inp_lport != inp->inp_fport);
 532                         } /* else nothing printed now */
 533 #endif /* INET6 */
 534                 }
 535                 if (xflag) {
 536                         printf("%6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u",
 537                                so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt,
 538                                so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt,
 539                                so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat,
 540                                so->so_rcv.sb_lowat, so->so_snd.sb_lowat,
 541                                so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt,
 542                                so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax);
 543                         if (timer != NULL)
 544                                 printf(" %4d.%02d %4d.%02d %4d.%02d %4d.%02d %4d.%02d %4d.%02d",
 545                                     timer->tt_rexmt / 1000, (timer->tt_rexmt % 1000) / 10,
 546                                     timer->tt_persist / 1000, (timer->tt_persist % 1000) / 10,
 547                                     timer->tt_keep / 1000, (timer->tt_keep % 1000) / 10,
 548                                     timer->tt_2msl / 1000, (timer->tt_2msl % 1000) / 10,
 549                                     timer->tt_delack / 1000, (timer->tt_delack % 1000) / 10,
 550                                     timer->t_rcvtime / 1000, (timer->t_rcvtime % 1000) / 10);
 551                 }
 552                 if (istcp && !Lflag && !xflag && !Tflag) {
 553                         if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
 554                                 printf("%d", tp->t_state);
 555                         else {
 556                                 printf("%s", tcpstates[tp->t_state]);
 557 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
 558                                 /* Show T/TCP `hidden state' */
 559                                 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
 560                                         putchar('*');
 561 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
 562                         }
 563                 }
 564                 putchar('\n');
 565         }
 566         if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
 567                 if (oxig->xig_count > xig->xig_count) {
 568                         printf("Some %s sockets may have been deleted.\n",
 569                             name);
 570                 } else if (oxig->xig_count < xig->xig_count) {
 571                         printf("Some %s sockets may have been created.\n",
 572                             name);
 573                 } else {
 574                         printf(
 575         "Some %s sockets may have been created or deleted.\n",
 576                             name);
 577                 }
 578         }
 579         free(buf);
 580 }
 581
 582 /*
 583  * Dump TCP statistics structure.
 584  */
 585 void
 586 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 587 {
 588         struct tcpstat tcpstat, zerostat;
 589         size_t len = sizeof tcpstat;
 590
 591 #ifdef INET6
 592         if (tcp_done != 0)
 593                 return;
 594         else
 595                 tcp_done = 1;
 596 #endif
 597
 598         if (live) {
 599                 if (zflag)
 600                         memset(&zerostat, 0, len);
 601                 if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len,
 602                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
 603                         warn("sysctl: net.inet.tcp.stats");
 604                         return;
 605                 }
 606         } else
 607                 kread(off, &tcpstat, len);
 608
 609         printf ("%s:\n", name);
 610
 611 #define p(f, m) if (tcpstat.f || sflag <= 1) \
 612     printf(m, tcpstat.f, plural(tcpstat.f))
 613 #define p1a(f, m) if (tcpstat.f || sflag <= 1) \
 614     printf(m, tcpstat.f)
 615 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
 616     printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
 617 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
 618     printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2)
 619 #define p3(f, m) if (tcpstat.f || sflag <= 1) \
 620     printf(m, tcpstat.f, pluralies(tcpstat.f))
 621
 622         p(tcps_sndtotal, "\t%lu packet%s sent\n");
 623         p2(tcps_sndpack,tcps_sndbyte, "\t\t%lu data packet%s (%lu byte%s)\n");
 624         p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
 625             "\t\t%lu data packet%s (%lu byte%s) retransmitted\n");
 626         p(tcps_sndrexmitbad,
 627             "\t\t%lu data packet%s unnecessarily retransmitted\n");
 628         p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n");
 629         p2a(tcps_sndacks, tcps_delack,
 630             "\t\t%lu ack-only packet%s (%lu delayed)\n");
 631         p(tcps_sndurg, "\t\t%lu URG only packet%s\n");
 632         p(tcps_sndprobe, "\t\t%lu window probe packet%s\n");
 633         p(tcps_sndwinup, "\t\t%lu window update packet%s\n");
 634         p(tcps_sndctrl, "\t\t%lu control packet%s\n");
 635         p(tcps_rcvtotal, "\t%lu packet%s received\n");
 636         p2(tcps_rcvackpack, tcps_rcvackbyte,
 637             "\t\t%lu ack%s (for %lu byte%s)\n");
 638         p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n");
 639         p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n");
 640         p2(tcps_rcvpack, tcps_rcvbyte,
 641             "\t\t%lu packet%s (%lu byte%s) received in-sequence\n");
 642         p2(tcps_rcvduppack, tcps_rcvdupbyte,
 643             "\t\t%lu completely duplicate packet%s (%lu byte%s)\n");
 644         p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n");
 645         p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
 646             "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n");
 647         p2(tcps_rcvoopack, tcps_rcvoobyte,
 648             "\t\t%lu out-of-order packet%s (%lu byte%s)\n");
 649         p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
 650             "\t\t%lu packet%s (%lu byte%s) of data after window\n");
 651         p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n");
 652         p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n");
 653         p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n");
 654         p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n");
 655         p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n");
 656         p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n");
 657         p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n");
 658         p(tcps_connattempt, "\t%lu connection request%s\n");
 659         p(tcps_accepts, "\t%lu connection accept%s\n");
 660         p(tcps_badsyn, "\t%lu bad connection attempt%s\n");
 661         p(tcps_listendrop, "\t%lu listen queue overflow%s\n");
 662         p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n");
 663         p(tcps_connects, "\t%lu connection%s established (including accepts)\n");
 664         p2(tcps_closed, tcps_drops,
 665             "\t%lu connection%s closed (including %lu drop%s)\n");
 666         p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n");
 667         p(tcps_cachedrttvar,
 668             "\t\t%lu connection%s updated cached RTT variance on close\n");
 669         p(tcps_cachedssthresh,
 670             "\t\t%lu connection%s updated cached ssthresh on close\n");
 671         p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n");
 672         p2(tcps_rttupdated, tcps_segstimed,
 673             "\t%lu segment%s updated rtt (of %lu attempt%s)\n");
 674         p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n");
 675         p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n");
 676         p(tcps_persisttimeo, "\t%lu persist timeout%s\n");
 677         p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n");
 678         p(tcps_finwait2_drops,
 679             "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n");
 680         p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n");
 681         p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n");
 682         p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n");
 683         p(tcps_predack, "\t%lu correct ACK header prediction%s\n");
 684         p(tcps_preddat, "\t%lu correct data packet header prediction%s\n");
 685
 686         p3(tcps_sc_added, "\t%lu syncache entr%s added\n");
 687         p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n");
 688         p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n");
 689         p1a(tcps_sc_dropped, "\t\t%lu dropped\n");
 690         p1a(tcps_sc_completed, "\t\t%lu completed\n");
 691         p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n");
 692         p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n");
 693         p1a(tcps_sc_reset, "\t\t%lu reset\n");
 694         p1a(tcps_sc_stale, "\t\t%lu stale\n");
 695         p1a(tcps_sc_aborted, "\t\t%lu aborted\n");
 696         p1a(tcps_sc_badack, "\t\t%lu badack\n");
 697         p1a(tcps_sc_unreach, "\t\t%lu unreach\n");
 698         p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n");
 699         p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n");
 700         p(tcps_sc_recvcookie, "\t%lu cookie%s received\n");
 701
 702         p(tcps_hc_added, "\t%lu hostcache entrie%s added\n");
 703         p1a(tcps_hc_bucketoverflow, "\t\t%lu bucket overflow\n");
 704
 705         p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n");
 706         p(tcps_sack_rexmits,
 707             "\t%lu segment rexmit%s in SACK recovery episodes\n");
 708         p(tcps_sack_rexmit_bytes,
 709             "\t%lu byte rexmit%s in SACK recovery episodes\n");
 710         p(tcps_sack_rcv_blocks,
 711             "\t%lu SACK option%s (SACK blocks) received\n");
 712         p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n");
 713         p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n");
 714
 715         p(tcps_ecn_ce, "\t%lu packet%s with ECN CE bit set\n");
 716         p(tcps_ecn_ect0, "\t%lu packet%s with ECN ECT(0) bit set\n");
 717         p(tcps_ecn_ect1, "\t%lu packet%s with ECN ECT(1) bit set\n");
 718         p(tcps_ecn_shs, "\t%lu successful ECN handshake%s\n");
 719         p(tcps_ecn_rcwnd, "\t%lu time%s ECN reduced the congestion window\n");
 720 #undef p
 721 #undef p1a
 722 #undef p2
 723 #undef p2a
 724 #undef p3
 725 }
 726
 727 /*
 728  * Dump UDP statistics structure.
 729  */
 730 void
 731 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 732 {
 733         struct udpstat udpstat, zerostat;
 734         size_t len = sizeof udpstat;
 735         u_long delivered;
 736
 737 #ifdef INET6
 738         if (udp_done != 0)
 739                 return;
 740         else
 741                 udp_done = 1;
 742 #endif
 743
 744         if (live) {
 745                 if (zflag)
 746                         memset(&zerostat, 0, len);
 747                 if (sysctlbyname("net.inet.udp.stats", &udpstat, &len,
 748                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
 749                         warn("sysctl: net.inet.udp.stats");
 750                         return;
 751                 }
 752         } else
 753                 kread(off, &udpstat, len);
 754
 755         printf("%s:\n", name);
 756 #define p(f, m) if (udpstat.f || sflag <= 1) \
 757     printf(m, udpstat.f, plural(udpstat.f))
 758 #define p1a(f, m) if (udpstat.f || sflag <= 1) \
 759     printf(m, udpstat.f)
 760         p(udps_ipackets, "\t%lu datagram%s received\n");
 761         p1a(udps_hdrops, "\t%lu with incomplete header\n");
 762         p1a(udps_badlen, "\t%lu with bad data length field\n");
 763         p1a(udps_badsum, "\t%lu with bad checksum\n");
 764         p1a(udps_nosum, "\t%lu with no checksum\n");
 765         p1a(udps_noport, "\t%lu dropped due to no socket\n");
 766         p(udps_noportbcast,
 767             "\t%lu broadcast/multicast datagram%s undelivered\n");
 768         p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n");
 769         p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n");
 770         delivered = udpstat.udps_ipackets -
 771                     udpstat.udps_hdrops -
 772                     udpstat.udps_badlen -
 773                     udpstat.udps_badsum -
 774                     udpstat.udps_noport -
 775                     udpstat.udps_noportbcast -
 776                     udpstat.udps_fullsock;
 777         if (delivered || sflag <= 1)
 778                 printf("\t%lu delivered\n", delivered);
 779         p(udps_opackets, "\t%lu datagram%s output\n");
 780         /* the next statistic is cumulative in udps_noportbcast */
 781         p(udps_filtermcast,
 782             "\t%lu time%s multicast source filter matched\n");
 783 #undef p
 784 #undef p1a
 785 }
 786
 787 /*
 788  * Dump CARP statistics structure.
 789  */
 790 void
 791 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 792 {
 793         struct carpstats carpstat, zerostat;
 794         size_t len = sizeof(struct carpstats);
 795
 796         if (live) {
 797                 if (zflag)
 798                         memset(&zerostat, 0, len);
 799                 if (sysctlbyname("net.inet.carp.stats", &carpstat, &len,
 800                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
 801                         if (errno != ENOENT)
 802                                 warn("sysctl: net.inet.carp.stats");
 803                         return;
 804                 }
 805         } else {
 806                 if (off == 0)
 807                         return;
 808                 kread(off, &carpstat, len);
 809         }
 810
 811         printf("%s:\n", name);
 812
 813 #define p(f, m) if (carpstat.f || sflag <= 1) \
 814         printf(m, (uintmax_t)carpstat.f, plural(carpstat.f))
 815 #define p2(f, m) if (carpstat.f || sflag <= 1) \
 816         printf(m, (uintmax_t)carpstat.f)
 817
 818         p(carps_ipackets, "\t%ju packet%s received (IPv4)\n");
 819         p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n");
 820         p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n");
 821         p(carps_hdrops, "\t\t%ju packet%s shorter than header\n");
 822         p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n");
 823         p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n");
 824         p2(carps_badlen, "\t\t%ju discarded because packet too short\n");
 825         p2(carps_badauth, "\t\t%ju discarded for bad authentication\n");
 826         p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n");
 827         p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n");
 828         p(carps_opackets, "\t%ju packet%s sent (IPv4)\n");
 829         p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n");
 830         p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n");
 831 #if notyet
 832         p(carps_ostates, "\t\t%s state update%s sent\n");
 833 #endif
 834 #undef p
 835 #undef p2
 836 }
 837
 838 /*
 839  * Dump IP statistics structure.
 840  */
 841 void
 842 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 843 {
 844         struct ipstat ipstat, zerostat;
 845         size_t len = sizeof ipstat;
 846
 847         if (live) {
 848                 if (zflag)
 849                         memset(&zerostat, 0, len);
 850                 if (sysctlbyname("net.inet.ip.stats", &ipstat, &len,
 851                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
 852                         warn("sysctl: net.inet.ip.stats");
 853                         return;
 854                 }
 855         } else
 856                 kread(off, &ipstat, len);
 857
 858         printf("%s:\n", name);
 859
 860 #define p(f, m) if (ipstat.f || sflag <= 1) \
 861     printf(m, ipstat.f, plural(ipstat.f))
 862 #define p1a(f, m) if (ipstat.f || sflag <= 1) \
 863     printf(m, ipstat.f)
 864
 865         p(ips_total, "\t%lu total packet%s received\n");
 866         p(ips_badsum, "\t%lu bad header checksum%s\n");
 867         p1a(ips_toosmall, "\t%lu with size smaller than minimum\n");
 868         p1a(ips_tooshort, "\t%lu with data size < data length\n");
 869         p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n");
 870         p1a(ips_badhlen, "\t%lu with header length < data size\n");
 871         p1a(ips_badlen, "\t%lu with data length < header length\n");
 872         p1a(ips_badoptions, "\t%lu with bad options\n");
 873         p1a(ips_badvers, "\t%lu with incorrect version number\n");
 874         p(ips_fragments, "\t%lu fragment%s received\n");
 875         p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n");
 876         p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n");
 877         p(ips_reassembled, "\t%lu packet%s reassembled ok\n");
 878         p(ips_delivered, "\t%lu packet%s for this host\n");
 879         p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n");
 880         p(ips_forward, "\t%lu packet%s forwarded");
 881         p(ips_fastforward, " (%lu packet%s fast forwarded)");
 882         if (ipstat.ips_forward || sflag <= 1)
 883                 putchar('\n');
 884         p(ips_cantforward, "\t%lu packet%s not forwardable\n");
 885         p(ips_notmember,
 886             "\t%lu packet%s received for unknown multicast group\n");
 887         p(ips_redirectsent, "\t%lu redirect%s sent\n");
 888         p(ips_localout, "\t%lu packet%s sent from this host\n");
 889         p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n");
 890         p(ips_odropped,
 891             "\t%lu output packet%s dropped due to no bufs, etc.\n");
 892         p(ips_noroute, "\t%lu output packet%s discarded due to no route\n");
 893         p(ips_fragmented, "\t%lu output datagram%s fragmented\n");
 894         p(ips_ofragments, "\t%lu fragment%s created\n");
 895         p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n");
 896         p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n");
 897         p(ips_badaddr, "\t%lu datagram%s with bad address in header\n");
 898 #undef p
 899 #undef p1a
 900 }
 901
 902 /*
 903  * Dump ARP statistics structure.
 904  */
 905 void
 906 arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 907 {
 908         struct arpstat arpstat, zerostat;
 909         size_t len = sizeof(arpstat);
 910
 911         if (live) {
 912                 if (zflag)
 913                         memset(&zerostat, 0, len);
 914                 if (sysctlbyname("net.link.ether.arp.stats", &arpstat, &len,
 915                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
 916                         warn("sysctl: net.link.ether.arp.stats");
 917                         return;
 918                 }
 919         } else
 920                 kread(off, &arpstat, len);
 921
 922         printf("%s:\n", name);
 923
 924 #define p(f, m) if (arpstat.f || sflag <= 1) \
 925     printf(m, arpstat.f, plural(arpstat.f))
 926 #define p2(f, m) if (arpstat.f || sflag <= 1) \
 927     printf(m, arpstat.f, pluralies(arpstat.f))
 928
 929         p(txrequests, "\t%lu ARP request%s sent\n");
 930         p2(txreplies, "\t%lu ARP repl%s sent\n");
 931         p(rxrequests, "\t%lu ARP request%s received\n");
 932         p2(rxreplies, "\t%lu ARP repl%s received\n");
 933         p(received, "\t%lu ARP packet%s received\n");
 934         p(dropped, "\t%lu total packet%s dropped due to no ARP entry\n");
 935         p(timeouts, "\t%lu ARP entry%s timed out\n");
 936         p(dupips, "\t%lu Duplicate IP%s seen\n");
 937 #undef p
 938 #undef p2
 939 }
 940
 941
 942
 943 static  const char *icmpnames[ICMP_MAXTYPE + 1] = {
 944         "echo reply",                   /* RFC 792 */
 945         "#1",
 946         "#2",
 947         "destination unreachable",      /* RFC 792 */
 948         "source quench",                /* RFC 792 */
 949         "routing redirect",             /* RFC 792 */
 950         "#6",
 951         "#7",
 952         "echo",                         /* RFC 792 */
 953         "router advertisement",         /* RFC 1256 */
 954         "router solicitation",          /* RFC 1256 */
 955         "time exceeded",                /* RFC 792 */
 956         "parameter problem",            /* RFC 792 */
 957         "time stamp",                   /* RFC 792 */
 958         "time stamp reply",             /* RFC 792 */
 959         "information request",          /* RFC 792 */
 960         "information request reply",    /* RFC 792 */
 961         "address mask request",         /* RFC 950 */
 962         "address mask reply",           /* RFC 950 */
 963         "#19",
 964         "#20",
 965         "#21",
 966         "#22",
 967         "#23",
 968         "#24",
 969         "#25",
 970         "#26",
 971         "#27",
 972         "#28",
 973         "#29",
 974         "icmp traceroute",              /* RFC 1393 */
 975         "datagram conversion error",    /* RFC 1475 */
 976         "mobile host redirect",
 977         "IPv6 where-are-you",
 978         "IPv6 i-am-here",
 979         "mobile registration req",
 980         "mobile registration reply",
 981         "domain name request",          /* RFC 1788 */
 982         "domain name reply",            /* RFC 1788 */
 983         "icmp SKIP",
 984         "icmp photuris",                /* RFC 2521 */
 985 };
 986
 987 /*
 988  * Dump ICMP statistics.
 989  */
 990 void
 991 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 992 {
 993         struct icmpstat icmpstat, zerostat;
 994         int i, first;
 995         size_t len;
 996
 997         len = sizeof icmpstat;
 998         if (live) {
 999                 if (zflag)
1000                         memset(&zerostat, 0, len);
1001                 if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len,
1002                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1003                         warn("sysctl: net.inet.icmp.stats");
1004                         return;
1005                 }
1006         } else
1007                 kread(off, &icmpstat, len);
1008
1009         printf("%s:\n", name);
1010
1011 #define p(f, m) if (icmpstat.f || sflag <= 1) \
1012     printf(m, icmpstat.f, plural(icmpstat.f))
1013 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \
1014     printf(m, icmpstat.f)
1015 #define p2(f, m) if (icmpstat.f || sflag <= 1) \
1016     printf(m, icmpstat.f, plurales(icmpstat.f))
1017
1018         p(icps_error, "\t%lu call%s to icmp_error\n");
1019         p(icps_oldicmp,
1020             "\t%lu error%s not generated in response to an icmp message\n");
1021         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
1022                 if (icmpstat.icps_outhist[i] != 0) {
1023                         if (first) {
1024                                 printf("\tOutput histogram:\n");
1025                                 first = 0;
1026                         }
1027                         if (icmpnames[i] != NULL)
1028                                 printf("\t\t%s: %lu\n", icmpnames[i],
1029                                         icmpstat.icps_outhist[i]);
1030                         else
1031                                 printf("\t\tunknown ICMP #%d: %lu\n", i,
1032                                         icmpstat.icps_outhist[i]);
1033                 }
1034         p(icps_badcode, "\t%lu message%s with bad code fields\n");
1035         p(icps_tooshort, "\t%lu message%s less than the minimum length\n");
1036         p(icps_checksum, "\t%lu message%s with bad checksum\n");
1037         p(icps_badlen, "\t%lu message%s with bad length\n");
1038         p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n");
1039         p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n");
1040         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
1041                 if (icmpstat.icps_inhist[i] != 0) {
1042                         if (first) {
1043                                 printf("\tInput histogram:\n");
1044                                 first = 0;
1045                         }
1046                         if (icmpnames[i] != NULL)
1047                                 printf("\t\t%s: %lu\n", icmpnames[i],
1048                                     icmpstat.icps_inhist[i]);
1049                         else
1050                                 printf("\t\tunknown ICMP #%d: %lu\n", i,
1051                                     icmpstat.icps_inhist[i]);
1052                 }
1053         p(icps_reflect, "\t%lu message response%s generated\n");
1054         p2(icps_badaddr, "\t%lu invalid return address%s\n");
1055         p(icps_noroute, "\t%lu no return route%s\n");
1056 #undef p
1057 #undef p1a
1058 #undef p2
1059         if (live) {
1060                 len = sizeof i;
1061                 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) <
1062                     0)
1063                         return;
1064                 printf("\tICMP address mask responses are %sabled\n",
1065                     i ? "en" : "dis");
1066         }
1067 }
1068
1069 #ifndef BURN_BRIDGES
1070 /*
1071  * Dump IGMP statistics structure (pre 8.x kernel).
1072  */
1073 static void
1074 igmp_stats_live_old(const char *name)
1075 {
1076         struct oigmpstat oigmpstat, zerostat;
1077         size_t len = sizeof(oigmpstat);
1078
1079         if (zflag)
1080                 memset(&zerostat, 0, len);
1081         if (sysctlbyname("net.inet.igmp.stats", &oigmpstat, &len,
1082             zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1083                 warn("sysctl: net.inet.igmp.stats");
1084                 return;
1085         }
1086
1087         printf("%s:\n", name);
1088
1089 #define p(f, m) if (oigmpstat.f || sflag <= 1) \
1090     printf(m, oigmpstat.f, plural(oigmpstat.f))
1091 #define py(f, m) if (oigmpstat.f || sflag <= 1) \
1092     printf(m, oigmpstat.f, oigmpstat.f != 1 ? "ies" : "y")
1093         p(igps_rcv_total, "\t%u message%s received\n");
1094         p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
1095         p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
1096         py(igps_rcv_queries, "\t%u membership quer%s received\n");
1097         py(igps_rcv_badqueries,
1098             "\t%u membership quer%s received with invalid field(s)\n");
1099         p(igps_rcv_reports, "\t%u membership report%s received\n");
1100         p(igps_rcv_badreports,
1101             "\t%u membership report%s received with invalid field(s)\n");
1102         p(igps_rcv_ourreports,
1103 "\t%u membership report%s received for groups to which we belong\n");
1104         p(igps_snd_reports, "\t%u membership report%s sent\n");
1105 #undef p
1106 #undef py
1107 }
1108 #endif /* !BURN_BRIDGES */
1109
1110 /*
1111  * Dump IGMP statistics structure.
1112  */
1113 void
1114 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1115 {
1116         struct igmpstat igmpstat, zerostat;
1117         size_t len;
1118
1119 #ifndef BURN_BRIDGES
1120         if (live) {
1121                 /*
1122                  * Detect if we are being run against a pre-IGMPv3 kernel.
1123                  * We cannot do this for a core file as the legacy
1124                  * struct igmpstat has no size field, nor does it
1125                  * export it in any readily-available symbols.
1126                  */
1127                 len = 0;
1128                 if (sysctlbyname("net.inet.igmp.stats", NULL, &len, NULL,
1129                     0) < 0) {
1130                         warn("sysctl: net.inet.igmp.stats");
1131                         return;
1132                 }
1133                 if (len < sizeof(igmpstat)) {
1134                         igmp_stats_live_old(name);
1135                         return;
1136                 }
1137         }
1138 #endif /* !BURN_BRIDGES */
1139
1140         len = sizeof(igmpstat);
1141         if (live) {
1142                 if (zflag)
1143                         memset(&zerostat, 0, len);
1144                 if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len,
1145                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1146                         warn("sysctl: net.inet.igmp.stats");
1147                         return;
1148                 }
1149         } else {
1150                 len = sizeof(igmpstat);
1151                 kread(off, &igmpstat, len);
1152         }
1153
1154         if (igmpstat.igps_version != IGPS_VERSION_3) {
1155                 warnx("%s: version mismatch (%d != %d)", __func__,
1156                     igmpstat.igps_version, IGPS_VERSION_3);
1157         }
1158         if (igmpstat.igps_len != IGPS_VERSION3_LEN) {
1159                 warnx("%s: size mismatch (%d != %d)", __func__,
1160                     igmpstat.igps_len, IGPS_VERSION3_LEN);
1161         }
1162
1163         printf("%s:\n", name);
1164
1165 #define p64(f, m) if (igmpstat.f || sflag <= 1) \
1166     printf(m, (uintmax_t) igmpstat.f, plural(igmpstat.f))
1167 #define py64(f, m) if (igmpstat.f || sflag <= 1) \
1168     printf(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f))
1169         p64(igps_rcv_total, "\t%ju message%s received\n");
1170         p64(igps_rcv_tooshort, "\t%ju message%s received with too few bytes\n");
1171         p64(igps_rcv_badttl, "\t%ju message%s received with wrong TTL\n");
1172         p64(igps_rcv_badsum, "\t%ju message%s received with bad checksum\n");
1173         py64(igps_rcv_v1v2_queries, "\t%ju V1/V2 membership quer%s received\n");
1174         py64(igps_rcv_v3_queries, "\t%ju V3 membership quer%s received\n");
1175         py64(igps_rcv_badqueries,
1176             "\t%ju membership quer%s received with invalid field(s)\n");
1177         py64(igps_rcv_gen_queries, "\t%ju general quer%s received\n");
1178         py64(igps_rcv_group_queries, "\t%ju group quer%s received\n");
1179         py64(igps_rcv_gsr_queries, "\t%ju group-source quer%s received\n");
1180         py64(igps_drop_gsr_queries, "\t%ju group-source quer%s dropped\n");
1181         p64(igps_rcv_reports, "\t%ju membership report%s received\n");
1182         p64(igps_rcv_badreports,
1183             "\t%ju membership report%s received with invalid field(s)\n");
1184         p64(igps_rcv_ourreports,
1185 "\t%ju membership report%s received for groups to which we belong\n");
1186         p64(igps_rcv_nora, "\t%ju V3 report%s received without Router Alert\n");
1187         p64(igps_snd_reports, "\t%ju membership report%s sent\n");
1188 #undef p64
1189 #undef py64
1190 }
1191
1192 /*
1193  * Dump PIM statistics structure.
1194  */
1195 void
1196 pim_stats(u_long off __unused, const char *name, int af1 __unused,
1197     int proto __unused)
1198 {
1199         struct pimstat pimstat, zerostat;
1200         size_t len = sizeof pimstat;
1201
1202         if (live) {
1203                 if (zflag)
1204                         memset(&zerostat, 0, len);
1205                 if (sysctlbyname("net.inet.pim.stats", &pimstat, &len,
1206                     zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1207                         if (errno != ENOENT)
1208                                 warn("sysctl: net.inet.pim.stats");
1209                         return;
1210                 }
1211         } else {
1212                 if (off == 0)
1213                         return;
1214                 kread(off, &pimstat, len);
1215         }
1216
1217         printf("%s:\n", name);
1218
1219 #define p(f, m) if (pimstat.f || sflag <= 1) \
1220     printf(m, (uintmax_t)pimstat.f, plural(pimstat.f))
1221 #define py(f, m) if (pimstat.f || sflag <= 1) \
1222     printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y")
1223         p(pims_rcv_total_msgs, "\t%ju message%s received\n");
1224         p(pims_rcv_total_bytes, "\t%ju byte%s received\n");
1225         p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n");
1226         p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n");
1227         p(pims_rcv_badversion, "\t%ju message%s received with bad version\n");
1228         p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n");
1229         p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n");
1230         p(pims_rcv_registers_wrongiif,
1231             "\t%ju data register message%s received on wrong iif\n");
1232         p(pims_rcv_badregisters, "\t%ju bad register%s received\n");
1233         p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n");
1234         p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n");
1235 #undef p
1236 #undef py
1237 }
1238
1239 /*
1240  * Pretty print an Internet address (net address + port).
1241  */
1242 void
1243 inetprint(struct in_addr *in, int port, const char *proto, int num_port)
1244 {
1245         struct servent *sp = 0;
1246         char line[80], *cp;
1247         int width;
1248
1249         if (Wflag)
1250             sprintf(line, "%s.", inetname(in));
1251         else
1252             sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in));
1253         cp = index(line, '\0');
1254         if (!num_port && port)
1255                 sp = getservbyport((int)port, proto);
1256         if (sp || port == 0)
1257                 sprintf(cp, "%.15s ", sp ? sp->s_name : "*");
1258         else
1259                 sprintf(cp, "%d ", ntohs((u_short)port));
1260         width = (Aflag && !Wflag) ? 18 : 22;
1261         if (Wflag)
1262             printf("%-*s ", width, line);
1263         else
1264             printf("%-*.*s ", width, width, line);
1265 }
1266
1267 /*
1268  * Construct an Internet address representation.
1269  * If numeric_addr has been supplied, give
1270  * numeric value, otherwise try for symbolic name.
1271  */
1272 char *
1273 inetname(struct in_addr *inp)
1274 {
1275         char *cp;
1276         static char line[MAXHOSTNAMELEN];
1277         struct hostent *hp;
1278         struct netent *np;
1279
1280         cp = 0;
1281         if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1282                 int net = inet_netof(*inp);
1283                 int lna = inet_lnaof(*inp);
1284
1285                 if (lna == INADDR_ANY) {
1286                         np = getnetbyaddr(net, AF_INET);
1287                         if (np)
1288                                 cp = np->n_name;
1289                 }
1290                 if (cp == 0) {
1291                         hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1292                         if (hp) {
1293                                 cp = hp->h_name;
1294                                 trimdomain(cp, strlen(cp));
1295                         }
1296                 }
1297         }
1298         if (inp->s_addr == INADDR_ANY)
1299                 strcpy(line, "*");
1300         else if (cp) {
1301                 strlcpy(line, cp, sizeof(line));
1302         } else {
1303                 inp->s_addr = ntohl(inp->s_addr);
1304 #define C(x)    ((u_int)((x) & 0xff))
1305                 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
1306                     C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
1307         }
1308         return (line);
1309 }