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  * 3. 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 #define _WANT_SOCKET
  45 #include <sys/socketvar.h>
  46 #include <sys/sysctl.h>
  47
  48 #include <net/route.h>
  49 #include <net/if_arp.h>
  50 #include <netinet/in.h>
  51 #include <netinet/in_systm.h>
  52 #include <netinet/ip.h>
  53 #include <netinet/ip_carp.h>
  54 #ifdef INET6
  55 #include <netinet/ip6.h>
  56 #endif /* INET6 */
  57 #include <netinet/in_pcb.h>
  58 #include <netinet/ip_icmp.h>
  59 #include <netinet/icmp_var.h>
  60 #include <netinet/igmp_var.h>
  61 #include <netinet/ip_var.h>
  62 #include <netinet/pim_var.h>
  63 #include <netinet/tcp.h>
  64 #include <netinet/tcpip.h>
  65 #include <netinet/tcp_seq.h>
  66 #define TCPSTATES
  67 #include <netinet/tcp_fsm.h>
  68 #include <netinet/tcp_timer.h>
  69 #include <netinet/tcp_var.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 <stdbool.h>
  82 #include <string.h>
  83 #include <unistd.h>
  84 #include <libxo/xo.h>
  85 #include "netstat.h"
  86 #include "nl_defs.h"
  87
  88 void    inetprint(const char *, struct in_addr *, int, const char *, int,
  89     const int);
  90 #ifdef INET6
  91 static int udp_done, tcp_done, sdp_done;
  92 #endif /* INET6 */
  93
  94 static int
  95 pcblist_sysctl(int proto, const char *name, char **bufp)
  96 {
  97         const char *mibvar;
  98         char *buf;
  99         size_t len;
 100
 101         switch (proto) {
 102         case IPPROTO_TCP:
 103                 mibvar = "net.inet.tcp.pcblist";
 104                 break;
 105         case IPPROTO_UDP:
 106                 mibvar = "net.inet.udp.pcblist";
 107                 break;
 108         case IPPROTO_DIVERT:
 109                 mibvar = "net.inet.divert.pcblist";
 110                 break;
 111         default:
 112                 mibvar = "net.inet.raw.pcblist";
 113                 break;
 114         }
 115         if (strncmp(name, "sdp", 3) == 0)
 116                 mibvar = "net.inet.sdp.pcblist";
 117         len = 0;
 118         if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 119                 if (errno != ENOENT)
 120                         xo_warn("sysctl: %s", mibvar);
 121                 return (0);
 122         }
 123         if ((buf = malloc(len)) == NULL) {
 124                 xo_warnx("malloc %lu bytes", (u_long)len);
 125                 return (0);
 126         }
 127         if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 128                 xo_warn("sysctl: %s", mibvar);
 129                 free(buf);
 130                 return (0);
 131         }
 132         *bufp = buf;
 133         return (1);
 134 }
 135
 136 /*
 137  * Copied directly from uipc_socket2.c.  We leave out some fields that are in
 138  * nested structures that aren't used to avoid extra work.
 139  */
 140 static void
 141 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb)
 142 {
 143         xsb->sb_cc = sb->sb_ccc;
 144         xsb->sb_hiwat = sb->sb_hiwat;
 145         xsb->sb_mbcnt = sb->sb_mbcnt;
 146         xsb->sb_mcnt = sb->sb_mcnt;
 147         xsb->sb_ccnt = sb->sb_ccnt;
 148         xsb->sb_mbmax = sb->sb_mbmax;
 149         xsb->sb_lowat = sb->sb_lowat;
 150         xsb->sb_flags = sb->sb_flags;
 151         xsb->sb_timeo = sb->sb_timeo;
 152 }
 153
 154 int
 155 sotoxsocket(struct socket *so, struct xsocket *xso)
 156 {
 157         struct protosw proto;
 158         struct domain domain;
 159
 160         bzero(xso, sizeof *xso);
 161         xso->xso_len = sizeof *xso;
 162         xso->xso_so = so;
 163         xso->so_type = so->so_type;
 164         xso->so_options = so->so_options;
 165         xso->so_linger = so->so_linger;
 166         xso->so_state = so->so_state;
 167         xso->so_pcb = so->so_pcb;
 168         if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0)
 169                 return (-1);
 170         xso->xso_protocol = proto.pr_protocol;
 171         if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0)
 172                 return (-1);
 173         xso->xso_family = domain.dom_family;
 174         xso->so_timeo = so->so_timeo;
 175         xso->so_error = so->so_error;
 176         if ((so->so_options & SO_ACCEPTCONN) != 0) {
 177                 xso->so_qlen = so->sol_qlen;
 178                 xso->so_incqlen = so->sol_incqlen;
 179                 xso->so_qlimit = so->sol_qlimit;
 180         } else {
 181                 sbtoxsockbuf(&so->so_snd, &xso->so_snd);
 182                 sbtoxsockbuf(&so->so_rcv, &xso->so_rcv);
 183                 xso->so_oobmark = so->so_oobmark;
 184         }
 185         return (0);
 186 }
 187
 188 /*
 189  * Print a summary of connections related to an Internet
 190  * protocol.  For TCP, also give state of connection.
 191  * Listening processes (aflag) are suppressed unless the
 192  * -a (all) flag is specified.
 193  */
 194 void
 195 protopr(u_long off, const char *name, int af1, int proto)
 196 {
 197         static int first = 1;
 198         int istcp;
 199         char *buf;
 200         const char *vchar;
 201         struct xtcpcb *tp;
 202         struct xinpcb *inp;
 203         struct xinpgen *xig, *oxig;
 204         struct xsocket *so;
 205
 206         istcp = 0;
 207         switch (proto) {
 208         case IPPROTO_TCP:
 209 #ifdef INET6
 210                 if (strncmp(name, "sdp", 3) != 0) {
 211                         if (tcp_done != 0)
 212                                 return;
 213                         else
 214                                 tcp_done = 1;
 215                 } else {
 216                         if (sdp_done != 0)
 217                                 return;
 218                         else
 219                                 sdp_done = 1;
 220                 }
 221 #endif
 222                 istcp = 1;
 223                 break;
 224         case IPPROTO_UDP:
 225 #ifdef INET6
 226                 if (udp_done != 0)
 227                         return;
 228                 else
 229                         udp_done = 1;
 230 #endif
 231                 break;
 232         }
 233
 234         if (!pcblist_sysctl(proto, name, &buf))
 235                 return;
 236
 237         oxig = xig = (struct xinpgen *)buf;
 238         for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
 239             xig->xig_len > sizeof(struct xinpgen);
 240             xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
 241                 if (istcp) {
 242                         tp = (struct xtcpcb *)xig;
 243                         inp = &tp->xt_inp;
 244                 } else {
 245                         inp = (struct xinpcb *)xig;
 246                 }
 247                 so = &inp->xi_socket;
 248
 249                 /* Ignore sockets for protocols other than the desired one. */
 250                 if (so->xso_protocol != proto)
 251                         continue;
 252
 253                 /* Ignore PCBs which were freed during copyout. */
 254                 if (inp->inp_gencnt > oxig->xig_gen)
 255                         continue;
 256
 257                 if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
 258 #ifdef INET6
 259                     || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
 260 #endif /* INET6 */
 261                     || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
 262 #ifdef INET6
 263                                           && (inp->inp_vflag & INP_IPV6) == 0
 264 #endif /* INET6 */
 265                         ))
 266                     )
 267                         continue;
 268                 if (!aflag &&
 269                     (
 270                      (istcp && tp->t_state == TCPS_LISTEN)
 271                      || (af1 == AF_INET &&
 272                       inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 273 #ifdef INET6
 274                      || (af1 == AF_INET6 &&
 275                          IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 276 #endif /* INET6 */
 277                      || (af1 == AF_UNSPEC &&
 278                          (((inp->inp_vflag & INP_IPV4) != 0 &&
 279                            inet_lnaof(inp->inp_laddr) == INADDR_ANY)
 280 #ifdef INET6
 281                           || ((inp->inp_vflag & INP_IPV6) != 0 &&
 282                               IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 283 #endif
 284                           ))
 285                      ))
 286                         continue;
 287
 288                 if (first) {
 289                         if (!Lflag) {
 290                                 xo_emit("Active Internet connections");
 291                                 if (aflag)
 292                                         xo_emit(" (including servers)");
 293                         } else
 294                                 xo_emit(
 295         "Current listen queue sizes (qlen/incqlen/maxqlen)");
 296                         xo_emit("\n");
 297                         if (Aflag)
 298                                 xo_emit("{T:/%-*s} ", 2 * (int)sizeof(void *),
 299                                     "Tcpcb");
 300                         if (Lflag)
 301                                 xo_emit((Aflag && !Wflag) ?
 302                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-18.18s}" :
 303                                     ((!Wflag || af1 == AF_INET) ?
 304                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-22.22s}" :
 305                                     "{T:/%-5.5s} {T:/%-32.32s} {T:/%-45.45s}"),
 306                                     "Proto", "Listen", "Local Address");
 307                         else if (Tflag)
 308                                 xo_emit((Aflag && !Wflag) ?
 309     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%s}" :
 310                                     ((!Wflag || af1 == AF_INET) ?
 311     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%s}" :
 312     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%s}"),
 313                                     "Proto", "Rexmit", "OOORcv", "0-win",
 314                                     "Local Address", "Foreign Address");
 315                         else {
 316                                 xo_emit((Aflag && !Wflag) ?
 317     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%-18.18s}" :
 318                                     ((!Wflag || af1 == AF_INET) ?
 319     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%-22.22s}" :
 320     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%-45.45s}"),
 321                                     "Proto", "Recv-Q", "Send-Q",
 322                                     "Local Address", "Foreign Address");
 323                                 if (!xflag && !Rflag)
 324                                         xo_emit(" {T:/%-11.11s}", "(state)");
 325                         }
 326                         if (xflag) {
 327                                 xo_emit(" {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 328                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 329                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
 330                                     "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s}",
 331                                     "R-MBUF", "S-MBUF", "R-CLUS", "S-CLUS",
 332                                     "R-HIWA", "S-HIWA", "R-LOWA", "S-LOWA",
 333                                     "R-BCNT", "S-BCNT", "R-BMAX", "S-BMAX");
 334                                 xo_emit(" {T:/%7.7s} {T:/%7.7s} {T:/%7.7s} "
 335                                     "{T:/%7.7s} {T:/%7.7s} {T:/%7.7s}",
 336                                     "rexmt", "persist", "keep", "2msl",
 337                                     "delack", "rcvtime");
 338                         } else if (Rflag) {
 339                                 xo_emit("  {T:/%8.8s} {T:/%5.5s}",
 340                                     "flowid", "ftype");
 341                         }
 342                         if (Pflag)
 343                                 xo_emit(" {T:/%s}", "Log ID");
 344                         xo_emit("\n");
 345                         first = 0;
 346                 }
 347                 if (Lflag && so->so_qlimit == 0)
 348                         continue;
 349                 xo_open_instance("socket");
 350                 if (Aflag) {
 351                         if (istcp)
 352                                 xo_emit("{q:address/%*lx} ",
 353                                     2 * (int)sizeof(void *),
 354                                     (u_long)inp->inp_ppcb);
 355                         else
 356                                 xo_emit("{q:address/%*lx} ",
 357                                     2 * (int)sizeof(void *),
 358                                     (u_long)so->so_pcb);
 359                 }
 360 #ifdef INET6
 361                 if ((inp->inp_vflag & INP_IPV6) != 0)
 362                         vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 363                             "46" : "6";
 364                 else
 365 #endif
 366                 vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
 367                     "4" : "";
 368                 if (istcp && (tp->t_flags & TF_TOE) != 0)
 369                         xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", "toe", vchar);
 370                 else
 371                         xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", name, vchar);
 372                 if (Lflag) {
 373                         char buf1[33];
 374
 375                         snprintf(buf1, sizeof buf1, "%u/%u/%u", so->so_qlen,
 376                             so->so_incqlen, so->so_qlimit);
 377                         xo_emit("{:listen-queue-sizes/%-32.32s} ", buf1);
 378                 } else if (Tflag) {
 379                         if (istcp)
 380                                 xo_emit("{:sent-retransmit-packets/%6u} "
 381                                     "{:received-out-of-order-packets/%6u} "
 382                                     "{:sent-zero-window/%6u} ",
 383                                     tp->t_sndrexmitpack, tp->t_rcvoopack,
 384                                     tp->t_sndzerowin);
 385                         else
 386                                 xo_emit("{P:/%21s}", "");
 387                 } else {
 388                         xo_emit("{:receive-bytes-waiting/%6u} "
 389                             "{:send-bytes-waiting/%6u} ",
 390                             so->so_rcv.sb_cc, so->so_snd.sb_cc);
 391                 }
 392                 if (numeric_port) {
 393                         if (inp->inp_vflag & INP_IPV4) {
 394                                 inetprint("local", &inp->inp_laddr,
 395                                     (int)inp->inp_lport, name, 1, af1);
 396                                 if (!Lflag)
 397                                         inetprint("remote", &inp->inp_faddr,
 398                                             (int)inp->inp_fport, name, 1, af1);
 399                         }
 400 #ifdef INET6
 401                         else if (inp->inp_vflag & INP_IPV6) {
 402                                 inet6print("local", &inp->in6p_laddr,
 403                                     (int)inp->inp_lport, name, 1);
 404                                 if (!Lflag)
 405                                         inet6print("remote", &inp->in6p_faddr,
 406                                             (int)inp->inp_fport, name, 1);
 407                         } /* else nothing printed now */
 408 #endif /* INET6 */
 409                 } else if (inp->inp_flags & INP_ANONPORT) {
 410                         if (inp->inp_vflag & INP_IPV4) {
 411                                 inetprint("local", &inp->inp_laddr,
 412                                     (int)inp->inp_lport, name, 1, af1);
 413                                 if (!Lflag)
 414                                         inetprint("remote", &inp->inp_faddr,
 415                                             (int)inp->inp_fport, name, 0, af1);
 416                         }
 417 #ifdef INET6
 418                         else if (inp->inp_vflag & INP_IPV6) {
 419                                 inet6print("local", &inp->in6p_laddr,
 420                                     (int)inp->inp_lport, name, 1);
 421                                 if (!Lflag)
 422                                         inet6print("remote", &inp->in6p_faddr,
 423                                             (int)inp->inp_fport, name, 0);
 424                         } /* else nothing printed now */
 425 #endif /* INET6 */
 426                 } else {
 427                         if (inp->inp_vflag & INP_IPV4) {
 428                                 inetprint("local", &inp->inp_laddr,
 429                                     (int)inp->inp_lport, name, 0, af1);
 430                                 if (!Lflag)
 431                                         inetprint("remote", &inp->inp_faddr,
 432                                             (int)inp->inp_fport, name,
 433                                             inp->inp_lport != inp->inp_fport,
 434                                             af1);
 435                         }
 436 #ifdef INET6
 437                         else if (inp->inp_vflag & INP_IPV6) {
 438                                 inet6print("local", &inp->in6p_laddr,
 439                                     (int)inp->inp_lport, name, 0);
 440                                 if (!Lflag)
 441                                         inet6print("remote", &inp->in6p_faddr,
 442                                             (int)inp->inp_fport, name,
 443                                             inp->inp_lport != inp->inp_fport);
 444                         } /* else nothing printed now */
 445 #endif /* INET6 */
 446                 }
 447                 if (xflag) {
 448                         xo_emit("{:receive-mbufs/%6u} {:send-mbufs/%6u} "
 449                             "{:receive-clusters/%6u} {:send-clusters/%6u} "
 450                             "{:receive-high-water/%6u} {:send-high-water/%6u} "
 451                             "{:receive-low-water/%6u} {:send-low-water/%6u} "
 452                             "{:receive-mbuf-bytes/%6u} {:send-mbuf-bytes/%6u} "
 453                             "{:receive-mbuf-bytes-max/%6u} "
 454                             "{:send-mbuf-bytes-max/%6u}",
 455                             so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt,
 456                             so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt,
 457                             so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat,
 458                             so->so_rcv.sb_lowat, so->so_snd.sb_lowat,
 459                             so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt,
 460                             so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax);
 461                         if (istcp)
 462                                 xo_emit(" {:retransmit-timer/%4d.%02d} "
 463                                     "{:persist-timer/%4d.%02d} "
 464                                     "{:keepalive-timer/%4d.%02d} "
 465                                     "{:msl2-timer/%4d.%02d} "
 466                                     "{:delay-ack-timer/%4d.%02d} "
 467                                     "{:inactivity-timer/%4d.%02d}",
 468                                     tp->tt_rexmt / 1000,
 469                                     (tp->tt_rexmt % 1000) / 10,
 470                                     tp->tt_persist / 1000,
 471                                     (tp->tt_persist % 1000) / 10,
 472                                     tp->tt_keep / 1000,
 473                                     (tp->tt_keep % 1000) / 10,
 474                                     tp->tt_2msl / 1000,
 475                                     (tp->tt_2msl % 1000) / 10,
 476                                     tp->tt_delack / 1000,
 477                                     (tp->tt_delack % 1000) / 10,
 478                                     tp->t_rcvtime / 1000,
 479                                     (tp->t_rcvtime % 1000) / 10);
 480                 }
 481                 if (istcp && !Lflag && !xflag && !Tflag && !Rflag) {
 482                         if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
 483                                 xo_emit("{:tcp-state/%-11d}", tp->t_state);
 484                         else {
 485                                 xo_emit("{:tcp-state/%-11s}",
 486                                     tcpstates[tp->t_state]);
 487 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
 488                                 /* Show T/TCP `hidden state' */
 489                                 if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
 490                                         xo_emit("{:need-syn-or-fin/*}");
 491 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
 492                         }
 493                 }
 494                 if (Rflag) {
 495                         /* XXX: is this right Alfred */
 496                         xo_emit(" {:flow-id/%08x} {:flow-type/%5d}",
 497                             inp->inp_flowid,
 498                             inp->inp_flowtype);
 499                 }
 500                 if (istcp && Pflag)
 501                         xo_emit(" {:log-id/%s}", tp->xt_logid[0] == '\0' ?
 502                             "-" : tp->xt_logid);
 503                 xo_emit("\n");
 504                 xo_close_instance("socket");
 505         }
 506         if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
 507                 if (oxig->xig_count > xig->xig_count) {
 508                         xo_emit("Some {d:lost/%s} sockets may have been "
 509                             "deleted.\n", name);
 510                 } else if (oxig->xig_count < xig->xig_count) {
 511                         xo_emit("Some {d:created/%s} sockets may have been "
 512                             "created.\n", name);
 513                 } else {
 514                         xo_emit("Some {d:changed/%s} sockets may have been "
 515                             "created or deleted.\n", name);
 516                 }
 517         }
 518         free(buf);
 519 }
 520
 521 /*
 522  * Dump TCP statistics structure.
 523  */
 524 void
 525 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 526 {
 527         struct tcpstat tcpstat;
 528         uint64_t tcps_states[TCP_NSTATES];
 529
 530 #ifdef INET6
 531         if (tcp_done != 0)
 532                 return;
 533         else
 534                 tcp_done = 1;
 535 #endif
 536
 537         if (fetch_stats("net.inet.tcp.stats", off, &tcpstat,
 538             sizeof(tcpstat), kread_counters) != 0)
 539                 return;
 540
 541         if (fetch_stats_ro("net.inet.tcp.states", nl[N_TCPS_STATES].n_value,
 542             &tcps_states, sizeof(tcps_states), kread_counters) != 0)
 543                 return;
 544
 545         xo_open_container("tcp");
 546         xo_emit("{T:/%s}:\n", name);
 547
 548 #define p(f, m) if (tcpstat.f || sflag <= 1)                            \
 549         xo_emit(m, (uintmax_t )tcpstat.f, plural(tcpstat.f))
 550 #define p1a(f, m) if (tcpstat.f || sflag <= 1)                          \
 551         xo_emit(m, (uintmax_t )tcpstat.f)
 552 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)       \
 553         xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),          \
 554             (uintmax_t )tcpstat.f2, plural(tcpstat.f2))
 555 #define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)      \
 556         xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),          \
 557             (uintmax_t )tcpstat.f2)
 558 #define p3(f, m) if (tcpstat.f || sflag <= 1)                           \
 559         xo_emit(m, (uintmax_t )tcpstat.f, pluralies(tcpstat.f))
 560
 561         p(tcps_sndtotal, "\t{:sent-packets/%ju} {N:/packet%s sent}\n");
 562         p2(tcps_sndpack,tcps_sndbyte, "\t\t{:sent-data-packets/%ju} "
 563             "{N:/data packet%s} ({:sent-data-bytes/%ju} {N:/byte%s})\n");
 564         p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, "\t\t"
 565             "{:sent-retransmitted-packets/%ju} {N:/data packet%s} "
 566             "({:sent-retransmitted-bytes/%ju} {N:/byte%s}) "
 567             "{N:retransmitted}\n");
 568         p(tcps_sndrexmitbad, "\t\t"
 569             "{:sent-unnecessary-retransmitted-packets/%ju} "
 570             "{N:/data packet%s unnecessarily retransmitted}\n");
 571         p(tcps_mturesent, "\t\t{:sent-resends-by-mtu-discovery/%ju} "
 572             "{N:/resend%s initiated by MTU discovery}\n");
 573         p2a(tcps_sndacks, tcps_delack, "\t\t{:sent-ack-only-packets/%ju} "
 574             "{N:/ack-only packet%s/} ({:sent-packets-delayed/%ju} "
 575             "{N:delayed})\n");
 576         p(tcps_sndurg, "\t\t{:sent-urg-only-packets/%ju} "
 577             "{N:/URG only packet%s}\n");
 578         p(tcps_sndprobe, "\t\t{:sent-window-probe-packets/%ju} "
 579             "{N:/window probe packet%s}\n");
 580         p(tcps_sndwinup, "\t\t{:sent-window-update-packets/%ju} "
 581             "{N:/window update packet%s}\n");
 582         p(tcps_sndctrl, "\t\t{:sent-control-packets/%ju} "
 583             "{N:/control packet%s}\n");
 584         p(tcps_rcvtotal, "\t{:received-packets/%ju} "
 585             "{N:/packet%s received}\n");
 586         p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t"
 587             "{:received-ack-packets/%ju} {N:/ack%s} "
 588             "{N:(for} {:received-ack-bytes/%ju} {N:/byte%s})\n");
 589         p(tcps_rcvdupack, "\t\t{:received-duplicate-acks/%ju} "
 590             "{N:/duplicate ack%s}\n");
 591         p(tcps_rcvacktoomuch, "\t\t{:received-acks-for-unsent-data/%ju} "
 592             "{N:/ack%s for unsent data}\n");
 593         p2(tcps_rcvpack, tcps_rcvbyte, "\t\t"
 594             "{:received-in-sequence-packets/%ju} {N:/packet%s} "
 595             "({:received-in-sequence-bytes/%ju} {N:/byte%s}) "
 596             "{N:received in-sequence}\n");
 597         p2(tcps_rcvduppack, tcps_rcvdupbyte, "\t\t"
 598             "{:received-completely-duplicate-packets/%ju} "
 599             "{N:/completely duplicate packet%s} "
 600             "({:received-completely-duplicate-bytes/%ju} {N:/byte%s})\n");
 601         p(tcps_pawsdrop, "\t\t{:received-old-duplicate-packets/%ju} "
 602             "{N:/old duplicate packet%s}\n");
 603         p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, "\t\t"
 604             "{:received-some-duplicate-packets/%ju} "
 605             "{N:/packet%s with some dup. data} "
 606             "({:received-some-duplicate-bytes/%ju} {N:/byte%s duped/})\n");
 607         p2(tcps_rcvoopack, tcps_rcvoobyte, "\t\t{:received-out-of-order/%ju} "
 608             "{N:/out-of-order packet%s} "
 609             "({:received-out-of-order-bytes/%ju} {N:/byte%s})\n");
 610         p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, "\t\t"
 611             "{:received-after-window-packets/%ju} {N:/packet%s} "
 612             "({:received-after-window-bytes/%ju} {N:/byte%s}) "
 613             "{N:of data after window}\n");
 614         p(tcps_rcvwinprobe, "\t\t{:received-window-probes/%ju} "
 615             "{N:/window probe%s}\n");
 616         p(tcps_rcvwinupd, "\t\t{:receive-window-update-packets/%ju} "
 617             "{N:/window update packet%s}\n");
 618         p(tcps_rcvafterclose, "\t\t{:received-after-close-packets/%ju} "
 619             "{N:/packet%s received after close}\n");
 620         p(tcps_rcvbadsum, "\t\t{:discard-bad-checksum/%ju} "
 621             "{N:/discarded for bad checksum%s}\n");
 622         p(tcps_rcvbadoff, "\t\t{:discard-bad-header-offset/%ju} "
 623             "{N:/discarded for bad header offset field%s}\n");
 624         p1a(tcps_rcvshort, "\t\t{:discard-too-short/%ju} "
 625             "{N:discarded because packet too short}\n");
 626         p1a(tcps_rcvmemdrop, "\t\t{:discard-memory-problems/%ju} "
 627             "{N:discarded due to memory problems}\n");
 628         p(tcps_connattempt, "\t{:connection-requests/%ju} "
 629             "{N:/connection request%s}\n");
 630         p(tcps_accepts, "\t{:connections-accepts/%ju} "
 631             "{N:/connection accept%s}\n");
 632         p(tcps_badsyn, "\t{:bad-connection-attempts/%ju} "
 633             "{N:/bad connection attempt%s}\n");
 634         p(tcps_listendrop, "\t{:listen-queue-overflows/%ju} "
 635             "{N:/listen queue overflow%s}\n");
 636         p(tcps_badrst, "\t{:ignored-in-window-resets/%ju} "
 637             "{N:/ignored RSTs in the window%s}\n");
 638         p(tcps_connects, "\t{:connections-established/%ju} "
 639             "{N:/connection%s established (including accepts)}\n");
 640         p(tcps_usedrtt, "\t\t{:connections-hostcache-rtt/%ju} "
 641             "{N:/time%s used RTT from hostcache}\n");
 642         p(tcps_usedrttvar, "\t\t{:connections-hostcache-rttvar/%ju} "
 643             "{N:/time%s used RTT variance from hostcache}\n");
 644         p(tcps_usedssthresh, "\t\t{:connections-hostcache-ssthresh/%ju} "
 645             "{N:/time%s used slow-start threshold from hostcache}\n");
 646         p2(tcps_closed, tcps_drops, "\t{:connections-closed/%ju} "
 647             "{N:/connection%s closed (including} "
 648             "{:connection-drops/%ju} {N:/drop%s})\n");
 649         p(tcps_cachedrtt, "\t\t{:connections-updated-rtt-on-close/%ju} "
 650             "{N:/connection%s updated cached RTT on close}\n");
 651         p(tcps_cachedrttvar, "\t\t"
 652             "{:connections-updated-variance-on-close/%ju} "
 653             "{N:/connection%s updated cached RTT variance on close}\n");
 654         p(tcps_cachedssthresh, "\t\t"
 655             "{:connections-updated-ssthresh-on-close/%ju} "
 656             "{N:/connection%s updated cached ssthresh on close}\n");
 657         p(tcps_conndrops, "\t{:embryonic-connections-dropped/%ju} "
 658             "{N:/embryonic connection%s dropped}\n");
 659         p2(tcps_rttupdated, tcps_segstimed, "\t{:segments-updated-rtt/%ju} "
 660             "{N:/segment%s updated rtt (of} "
 661             "{:segment-update-attempts/%ju} {N:/attempt%s})\n");
 662         p(tcps_rexmttimeo, "\t{:retransmit-timeouts/%ju} "
 663             "{N:/retransmit timeout%s}\n");
 664         p(tcps_timeoutdrop, "\t\t"
 665             "{:connections-dropped-by-retransmit-timeout/%ju} "
 666             "{N:/connection%s dropped by rexmit timeout}\n");
 667         p(tcps_persisttimeo, "\t{:persist-timeout/%ju} "
 668             "{N:/persist timeout%s}\n");
 669         p(tcps_persistdrop, "\t\t"
 670             "{:connections-dropped-by-persist-timeout/%ju} "
 671             "{N:/connection%s dropped by persist timeout}\n");
 672         p(tcps_finwait2_drops, "\t"
 673             "{:connections-dropped-by-finwait2-timeout/%ju} "
 674             "{N:/Connection%s (fin_wait_2) dropped because of timeout}\n");
 675         p(tcps_keeptimeo, "\t{:keepalive-timeout/%ju} "
 676             "{N:/keepalive timeout%s}\n");
 677         p(tcps_keepprobe, "\t\t{:keepalive-probes/%ju} "
 678             "{N:/keepalive probe%s sent}\n");
 679         p(tcps_keepdrops, "\t\t{:connections-dropped-by-keepalives/%ju} "
 680             "{N:/connection%s dropped by keepalive}\n");
 681         p(tcps_predack, "\t{:ack-header-predictions/%ju} "
 682             "{N:/correct ACK header prediction%s}\n");
 683         p(tcps_preddat, "\t{:data-packet-header-predictions/%ju} "
 684             "{N:/correct data packet header prediction%s}\n");
 685
 686         xo_open_container("syncache");
 687
 688         p3(tcps_sc_added, "\t{:entries-added/%ju} "
 689             "{N:/syncache entr%s added}\n");
 690         p1a(tcps_sc_retransmitted, "\t\t{:retransmitted/%ju} "
 691             "{N:/retransmitted}\n");
 692         p1a(tcps_sc_dupsyn, "\t\t{:duplicates/%ju} {N:/dupsyn}\n");
 693         p1a(tcps_sc_dropped, "\t\t{:dropped/%ju} {N:/dropped}\n");
 694         p1a(tcps_sc_completed, "\t\t{:completed/%ju} {N:/completed}\n");
 695         p1a(tcps_sc_bucketoverflow, "\t\t{:bucket-overflow/%ju} "
 696             "{N:/bucket overflow}\n");
 697         p1a(tcps_sc_cacheoverflow, "\t\t{:cache-overflow/%ju} "
 698             "{N:/cache overflow}\n");
 699         p1a(tcps_sc_reset, "\t\t{:reset/%ju} {N:/reset}\n");
 700         p1a(tcps_sc_stale, "\t\t{:stale/%ju} {N:/stale}\n");
 701         p1a(tcps_sc_aborted, "\t\t{:aborted/%ju} {N:/aborted}\n");
 702         p1a(tcps_sc_badack, "\t\t{:bad-ack/%ju} {N:/badack}\n");
 703         p1a(tcps_sc_unreach, "\t\t{:unreachable/%ju} {N:/unreach}\n");
 704         p(tcps_sc_zonefail, "\t\t{:zone-failures/%ju} {N:/zone failure%s}\n");
 705         p(tcps_sc_sendcookie, "\t{:sent-cookies/%ju} {N:/cookie%s sent}\n");
 706         p(tcps_sc_recvcookie, "\t{:receivd-cookies/%ju} "
 707             "{N:/cookie%s received}\n");
 708
 709         xo_close_container("syncache");
 710
 711         xo_open_container("hostcache");
 712
 713         p3(tcps_hc_added, "\t{:entries-added/%ju} "
 714             "{N:/hostcache entr%s added}\n");
 715         p1a(tcps_hc_bucketoverflow, "\t\t{:buffer-overflows/%ju} "
 716             "{N:/bucket overflow}\n");
 717
 718         xo_close_container("hostcache");
 719
 720         xo_open_container("sack");
 721
 722         p(tcps_sack_recovery_episode, "\t{:recovery-episodes/%ju} "
 723             "{N:/SACK recovery episode%s}\n");
 724         p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
 725             "{N:/segment rexmit%s in SACK recovery episodes}\n");
 726         p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
 727             "{N:/byte rexmit%s in SACK recovery episodes}\n");
 728         p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
 729             "{N:/SACK option%s (SACK blocks) received}\n");
 730         p(tcps_sack_send_blocks, "\t{:sent-option-blocks/%ju} "
 731             "{N:/SACK option%s (SACK blocks) sent}\n");
 732         p1a(tcps_sack_sboverflow, "\t{:scoreboard-overflows/%ju} "
 733             "{N:/SACK scoreboard overflow}\n");
 734
 735         xo_close_container("sack");
 736         xo_open_container("ecn");
 737
 738         p(tcps_ecn_ce, "\t{:ce-packets/%ju} "
 739             "{N:/packet%s with ECN CE bit set}\n");
 740         p(tcps_ecn_ect0, "\t{:ect0-packets/%ju} "
 741             "{N:/packet%s with ECN ECT(0) bit set}\n");
 742         p(tcps_ecn_ect1, "\t{:ect1-packets/%ju} "
 743             "{N:/packet%s with ECN ECT(1) bit set}\n");
 744         p(tcps_ecn_shs, "\t{:handshakes/%ju} "
 745             "{N:/successful ECN handshake%s}\n");
 746         p(tcps_ecn_rcwnd, "\t{:congestion-reductions/%ju} "
 747             "{N:/time%s ECN reduced the congestion window}\n");
 748
 749         xo_close_container("ecn");
 750         xo_open_container("tcp-signature");
 751         p(tcps_sig_rcvgoodsig, "\t{:received-good-signature/%ju} "
 752             "{N:/packet%s with matching signature received}\n");
 753         p(tcps_sig_rcvbadsig, "\t{:received-bad-signature/%ju} "
 754             "{N:/packet%s with bad signature received}\n");
 755         p(tcps_sig_err_buildsig, "\t{:failed-make-signature/%ju} "
 756             "{N:/time%s failed to make signature due to no SA}\n");
 757         p(tcps_sig_err_sigopt, "\t{:no-signature-expected/%ju} "
 758             "{N:/time%s unexpected signature received}\n");
 759         p(tcps_sig_err_nosigopt, "\t{:no-signature-provided/%ju} "
 760             "{N:/time%s no signature provided by segment}\n");
 761
 762         xo_close_container("tcp-signature");
 763         xo_open_container("pmtud");
 764
 765         p(tcps_pmtud_blackhole_activated, "\t{:pmtud-activated/%ju} "
 766             "{N:/Path MTU discovery black hole detection activation%s}\n");
 767         p(tcps_pmtud_blackhole_activated_min_mss,
 768             "\t{:pmtud-activated-min-mss/%ju} "
 769             "{N:/Path MTU discovery black hole detection min MSS activation%s}\n");
 770         p(tcps_pmtud_blackhole_failed, "\t{:pmtud-failed/%ju} "
 771             "{N:/Path MTU discovery black hole detection failure%s}\n");
 772  #undef p
 773  #undef p1a
 774  #undef p2
 775  #undef p2a
 776  #undef p3
 777         xo_close_container("pmtud");
 778
 779
 780         xo_open_container("TCP connection count by state");
 781         xo_emit("{T:/TCP connection count by state}:\n");
 782         for (int i = 0; i < TCP_NSTATES; i++) {
 783                 /*
 784                  * XXXGL: is there a way in libxo to use %s
 785                  * in the "content string" of a format
 786                  * string? I failed to do that, that's why
 787                  * a temporary buffer is used to construct
 788                  * format string for xo_emit().
 789                  */
 790                 char fmtbuf[80];
 791
 792                 if (sflag > 1 && tcps_states[i] == 0)
 793                         continue;
 794                 snprintf(fmtbuf, sizeof(fmtbuf), "\t{:%s/%%ju} "
 795                     "{Np:/connection ,connections} in %s state\n",
 796                     tcpstates[i], tcpstates[i]);
 797                 xo_emit(fmtbuf, (uintmax_t )tcps_states[i]);
 798         }
 799         xo_close_container("TCP connection count by state");
 800
 801         xo_close_container("tcp");
 802 }
 803
 804 /*
 805  * Dump UDP statistics structure.
 806  */
 807 void
 808 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 809 {
 810         struct udpstat udpstat;
 811         uint64_t delivered;
 812
 813 #ifdef INET6
 814         if (udp_done != 0)
 815                 return;
 816         else
 817                 udp_done = 1;
 818 #endif
 819
 820         if (fetch_stats("net.inet.udp.stats", off, &udpstat,
 821             sizeof(udpstat), kread_counters) != 0)
 822                 return;
 823
 824         xo_open_container("udp");
 825         xo_emit("{T:/%s}:\n", name);
 826
 827 #define p(f, m) if (udpstat.f || sflag <= 1) \
 828         xo_emit("\t" m, (uintmax_t)udpstat.f, plural(udpstat.f))
 829 #define p1a(f, m) if (udpstat.f || sflag <= 1) \
 830         xo_emit("\t" m, (uintmax_t)udpstat.f)
 831
 832         p(udps_ipackets, "{:received-datagrams/%ju} "
 833             "{N:/datagram%s received}\n");
 834         p1a(udps_hdrops, "{:dropped-incomplete-headers/%ju} "
 835             "{N:/with incomplete header}\n");
 836         p1a(udps_badlen, "{:dropped-bad-data-length/%ju} "
 837             "{N:/with bad data length field}\n");
 838         p1a(udps_badsum, "{:dropped-bad-checksum/%ju} "
 839             "{N:/with bad checksum}\n");
 840         p1a(udps_nosum, "{:dropped-no-checksum/%ju} "
 841             "{N:/with no checksum}\n");
 842         p1a(udps_noport, "{:dropped-no-socket/%ju} "
 843             "{N:/dropped due to no socket}\n");
 844         p(udps_noportbcast, "{:dropped-broadcast-multicast/%ju} "
 845             "{N:/broadcast\\/multicast datagram%s undelivered}\n");
 846         p1a(udps_fullsock, "{:dropped-full-socket-buffer/%ju} "
 847             "{N:/dropped due to full socket buffers}\n");
 848         p1a(udpps_pcbhashmiss, "{:not-for-hashed-pcb/%ju} "
 849             "{N:/not for hashed pcb}\n");
 850         delivered = udpstat.udps_ipackets -
 851                     udpstat.udps_hdrops -
 852                     udpstat.udps_badlen -
 853                     udpstat.udps_badsum -
 854                     udpstat.udps_noport -
 855                     udpstat.udps_noportbcast -
 856                     udpstat.udps_fullsock;
 857         if (delivered || sflag <= 1)
 858                 xo_emit("\t{:delivered-packets/%ju} {N:/delivered}\n",
 859                     (uint64_t)delivered);
 860         p(udps_opackets, "{:output-packets/%ju} {N:/datagram%s output}\n");
 861         /* the next statistic is cumulative in udps_noportbcast */
 862         p(udps_filtermcast, "{:multicast-source-filter-matches/%ju} "
 863             "{N:/time%s multicast source filter matched}\n");
 864 #undef p
 865 #undef p1a
 866         xo_close_container("udp");
 867 }
 868
 869 /*
 870  * Dump CARP statistics structure.
 871  */
 872 void
 873 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 874 {
 875         struct carpstats carpstat;
 876
 877         if (fetch_stats("net.inet.carp.stats", off, &carpstat,
 878             sizeof(carpstat), kread_counters) != 0)
 879                 return;
 880
 881         xo_open_container(name);
 882         xo_emit("{T:/%s}:\n", name);
 883
 884 #define p(f, m) if (carpstat.f || sflag <= 1) \
 885         xo_emit(m, (uintmax_t)carpstat.f, plural(carpstat.f))
 886 #define p2(f, m) if (carpstat.f || sflag <= 1) \
 887         xo_emit(m, (uintmax_t)carpstat.f)
 888
 889         p(carps_ipackets, "\t{:received-inet-packets/%ju} "
 890             "{N:/packet%s received (IPv4)}\n");
 891         p(carps_ipackets6, "\t{:received-inet6-packets/%ju} "
 892             "{N:/packet%s received (IPv6)}\n");
 893         p(carps_badttl, "\t\t{:dropped-wrong-ttl/%ju} "
 894             "{N:/packet%s discarded for wrong TTL}\n");
 895         p(carps_hdrops, "\t\t{:dropped-short-header/%ju} "
 896             "{N:/packet%s shorter than header}\n");
 897         p(carps_badsum, "\t\t{:dropped-bad-checksum/%ju} "
 898             "{N:/discarded for bad checksum%s}\n");
 899         p(carps_badver, "\t\t{:dropped-bad-version/%ju} "
 900             "{N:/discarded packet%s with a bad version}\n");
 901         p2(carps_badlen, "\t\t{:dropped-short-packet/%ju} "
 902             "{N:/discarded because packet too short}\n");
 903         p2(carps_badauth, "\t\t{:dropped-bad-authentication/%ju} "
 904             "{N:/discarded for bad authentication}\n");
 905         p2(carps_badvhid, "\t\t{:dropped-bad-vhid/%ju} "
 906             "{N:/discarded for bad vhid}\n");
 907         p2(carps_badaddrs, "\t\t{:dropped-bad-address-list/%ju} "
 908             "{N:/discarded because of a bad address list}\n");
 909         p(carps_opackets, "\t{:sent-inet-packets/%ju} "
 910             "{N:/packet%s sent (IPv4)}\n");
 911         p(carps_opackets6, "\t{:sent-inet6-packets/%ju} "
 912             "{N:/packet%s sent (IPv6)}\n");
 913         p2(carps_onomem, "\t\t{:send-failed-memory-error/%ju} "
 914             "{N:/send failed due to mbuf memory error}\n");
 915 #if notyet
 916         p(carps_ostates, "\t\t{:send-state-updates/%s} "
 917             "{N:/state update%s sent}\n");
 918 #endif
 919 #undef p
 920 #undef p2
 921         xo_close_container(name);
 922 }
 923
 924 /*
 925  * Dump IP statistics structure.
 926  */
 927 void
 928 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 929 {
 930         struct ipstat ipstat;
 931
 932         if (fetch_stats("net.inet.ip.stats", off, &ipstat,
 933             sizeof(ipstat), kread_counters) != 0)
 934                 return;
 935
 936         xo_open_container(name);
 937         xo_emit("{T:/%s}:\n", name);
 938
 939 #define p(f, m) if (ipstat.f || sflag <= 1) \
 940         xo_emit(m, (uintmax_t )ipstat.f, plural(ipstat.f))
 941 #define p1a(f, m) if (ipstat.f || sflag <= 1) \
 942         xo_emit(m, (uintmax_t )ipstat.f)
 943
 944         p(ips_total, "\t{:received-packets/%ju} "
 945             "{N:/total packet%s received}\n");
 946         p(ips_badsum, "\t{:dropped-bad-checksum/%ju} "
 947             "{N:/bad header checksum%s}\n");
 948         p1a(ips_toosmall, "\t{:dropped-below-minimum-size/%ju} "
 949             "{N:/with size smaller than minimum}\n");
 950         p1a(ips_tooshort, "\t{:dropped-short-packets/%ju} "
 951             "{N:/with data size < data length}\n");
 952         p1a(ips_toolong, "\t{:dropped-too-long/%ju} "
 953             "{N:/with ip length > max ip packet size}\n");
 954         p1a(ips_badhlen, "\t{:dropped-short-header-length/%ju} "
 955             "{N:/with header length < data size}\n");
 956         p1a(ips_badlen, "\t{:dropped-short-data/%ju} "
 957             "{N:/with data length < header length}\n");
 958         p1a(ips_badoptions, "\t{:dropped-bad-options/%ju} "
 959             "{N:/with bad options}\n");
 960         p1a(ips_badvers, "\t{:dropped-bad-version/%ju} "
 961             "{N:/with incorrect version number}\n");
 962         p(ips_fragments, "\t{:received-fragments/%ju} "
 963             "{N:/fragment%s received}\n");
 964         p(ips_fragdropped, "\t{:dropped-fragments/%ju} "
 965             "{N:/fragment%s dropped (dup or out of space)}\n");
 966         p(ips_fragtimeout, "\t{:dropped-fragments-after-timeout/%ju} "
 967             "{N:/fragment%s dropped after timeout}\n");
 968         p(ips_reassembled, "\t{:reassembled-packets/%ju} "
 969             "{N:/packet%s reassembled ok}\n");
 970         p(ips_delivered, "\t{:received-local-packets/%ju} "
 971             "{N:/packet%s for this host}\n");
 972         p(ips_noproto, "\t{:dropped-unknown-protocol/%ju} "
 973             "{N:/packet%s for unknown\\/unsupported protocol}\n");
 974         p(ips_forward, "\t{:forwarded-packets/%ju} "
 975             "{N:/packet%s forwarded}");
 976         p(ips_fastforward, " ({:fast-forwarded-packets/%ju} "
 977             "{N:/packet%s fast forwarded})");
 978         if (ipstat.ips_forward || sflag <= 1)
 979                 xo_emit("\n");
 980         p(ips_cantforward, "\t{:packets-cannot-forward/%ju} "
 981             "{N:/packet%s not forwardable}\n");
 982         p(ips_notmember, "\t{:received-unknown-multicast-group/%ju} "
 983             "{N:/packet%s received for unknown multicast group}\n");
 984         p(ips_redirectsent, "\t{:redirects-sent/%ju} "
 985             "{N:/redirect%s sent}\n");
 986         p(ips_localout, "\t{:sent-packets/%ju} "
 987             "{N:/packet%s sent from this host}\n");
 988         p(ips_rawout, "\t{:send-packets-fabricated-header/%ju} "
 989             "{N:/packet%s sent with fabricated ip header}\n");
 990         p(ips_odropped, "\t{:discard-no-mbufs/%ju} "
 991             "{N:/output packet%s dropped due to no bufs, etc.}\n");
 992         p(ips_noroute, "\t{:discard-no-route/%ju} "
 993             "{N:/output packet%s discarded due to no route}\n");
 994         p(ips_fragmented, "\t{:sent-fragments/%ju} "
 995             "{N:/output datagram%s fragmented}\n");
 996         p(ips_ofragments, "\t{:fragments-created/%ju} "
 997             "{N:/fragment%s created}\n");
 998         p(ips_cantfrag, "\t{:discard-cannot-fragment/%ju} "
 999             "{N:/datagram%s that can't be fragmented}\n");
1000         p(ips_nogif, "\t{:discard-tunnel-no-gif/%ju} "
1001             "{N:/tunneling packet%s that can't find gif}\n");
1002         p(ips_badaddr, "\t{:discard-bad-address/%ju} "
1003             "{N:/datagram%s with bad address in header}\n");
1004 #undef p
1005 #undef p1a
1006         xo_close_container(name);
1007 }
1008
1009 /*
1010  * Dump ARP statistics structure.
1011  */
1012 void
1013 arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1014 {
1015         struct arpstat arpstat;
1016
1017         if (fetch_stats("net.link.ether.arp.stats", off, &arpstat,
1018             sizeof(arpstat), kread_counters) != 0)
1019                 return;
1020
1021         xo_open_container(name);
1022         xo_emit("{T:/%s}:\n", name);
1023
1024 #define p(f, m) if (arpstat.f || sflag <= 1) \
1025         xo_emit("\t" m, (uintmax_t)arpstat.f, plural(arpstat.f))
1026 #define p2(f, m) if (arpstat.f || sflag <= 1) \
1027         xo_emit("\t" m, (uintmax_t)arpstat.f, pluralies(arpstat.f))
1028
1029         p(txrequests, "{:sent-requests/%ju} {N:/ARP request%s sent}\n");
1030         p2(txreplies, "{:sent-replies/%ju} {N:/ARP repl%s sent}\n");
1031         p(rxrequests, "{:received-requests/%ju} "
1032             "{N:/ARP request%s received}\n");
1033         p2(rxreplies, "{:received-replies/%ju} "
1034             "{N:/ARP repl%s received}\n");
1035         p(received, "{:received-packers/%ju} "
1036             "{N:/ARP packet%s received}\n");
1037         p(dropped, "{:dropped-no-entry/%ju} "
1038             "{N:/total packet%s dropped due to no ARP entry}\n");
1039         p(timeouts, "{:entries-timeout/%ju} "
1040             "{N:/ARP entry%s timed out}\n");
1041         p(dupips, "{:dropped-duplicate-address/%ju} "
1042             "{N:/Duplicate IP%s seen}\n");
1043 #undef p
1044 #undef p2
1045         xo_close_container(name);
1046 }
1047
1048
1049
1050 static  const char *icmpnames[ICMP_MAXTYPE + 1] = {
1051         "echo reply",                   /* RFC 792 */
1052         "#1",
1053         "#2",
1054         "destination unreachable",      /* RFC 792 */
1055         "source quench",                /* RFC 792 */
1056         "routing redirect",             /* RFC 792 */
1057         "#6",
1058         "#7",
1059         "echo",                         /* RFC 792 */
1060         "router advertisement",         /* RFC 1256 */
1061         "router solicitation",          /* RFC 1256 */
1062         "time exceeded",                /* RFC 792 */
1063         "parameter problem",            /* RFC 792 */
1064         "time stamp",                   /* RFC 792 */
1065         "time stamp reply",             /* RFC 792 */
1066         "information request",          /* RFC 792 */
1067         "information request reply",    /* RFC 792 */
1068         "address mask request",         /* RFC 950 */
1069         "address mask reply",           /* RFC 950 */
1070         "#19",
1071         "#20",
1072         "#21",
1073         "#22",
1074         "#23",
1075         "#24",
1076         "#25",
1077         "#26",
1078         "#27",
1079         "#28",
1080         "#29",
1081         "icmp traceroute",              /* RFC 1393 */
1082         "datagram conversion error",    /* RFC 1475 */
1083         "mobile host redirect",
1084         "IPv6 where-are-you",
1085         "IPv6 i-am-here",
1086         "mobile registration req",
1087         "mobile registration reply",
1088         "domain name request",          /* RFC 1788 */
1089         "domain name reply",            /* RFC 1788 */
1090         "icmp SKIP",
1091         "icmp photuris",                /* RFC 2521 */
1092 };
1093
1094 /*
1095  * Dump ICMP statistics.
1096  */
1097 void
1098 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1099 {
1100         struct icmpstat icmpstat;
1101         size_t len;
1102         int i, first;
1103
1104         if (fetch_stats("net.inet.icmp.stats", off, &icmpstat,
1105             sizeof(icmpstat), kread_counters) != 0)
1106                 return;
1107
1108         xo_open_container(name);
1109         xo_emit("{T:/%s}:\n", name);
1110
1111 #define p(f, m) if (icmpstat.f || sflag <= 1) \
1112         xo_emit(m, icmpstat.f, plural(icmpstat.f))
1113 #define p1a(f, m) if (icmpstat.f || sflag <= 1) \
1114         xo_emit(m, icmpstat.f)
1115 #define p2(f, m) if (icmpstat.f || sflag <= 1) \
1116         xo_emit(m, icmpstat.f, plurales(icmpstat.f))
1117
1118         p(icps_error, "\t{:icmp-calls/%lu} "
1119             "{N:/call%s to icmp_error}\n");
1120         p(icps_oldicmp, "\t{:errors-not-from-message/%lu} "
1121             "{N:/error%s not generated in response to an icmp message}\n");
1122
1123         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1124                 if (icmpstat.icps_outhist[i] != 0) {
1125                         if (first) {
1126                                 xo_open_list("output-histogram");
1127                                 xo_emit("\tOutput histogram:\n");
1128                                 first = 0;
1129                         }
1130                         xo_open_instance("output-histogram");
1131                         if (icmpnames[i] != NULL)
1132                                 xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1133                                     icmpnames[i], icmpstat.icps_outhist[i]);
1134                         else
1135                                 xo_emit("\t\tunknown ICMP #{k:name/%d}: "
1136                                     "{:count/%lu}\n",
1137                                     i, icmpstat.icps_outhist[i]);
1138                         xo_close_instance("output-histogram");
1139                 }
1140         }
1141         if (!first)
1142                 xo_close_list("output-histogram");
1143
1144         p(icps_badcode, "\t{:dropped-bad-code/%lu} "
1145             "{N:/message%s with bad code fields}\n");
1146         p(icps_tooshort, "\t{:dropped-too-short/%lu} "
1147             "{N:/message%s less than the minimum length}\n");
1148         p(icps_checksum, "\t{:dropped-bad-checksum/%lu} "
1149             "{N:/message%s with bad checksum}\n");
1150         p(icps_badlen, "\t{:dropped-bad-length/%lu} "
1151             "{N:/message%s with bad length}\n");
1152         p1a(icps_bmcastecho, "\t{:dropped-multicast-echo/%lu} "
1153             "{N:/multicast echo requests ignored}\n");
1154         p1a(icps_bmcasttstamp, "\t{:dropped-multicast-timestamp/%lu} "
1155             "{N:/multicast timestamp requests ignored}\n");
1156
1157         for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1158                 if (icmpstat.icps_inhist[i] != 0) {
1159                         if (first) {
1160                                 xo_open_list("input-histogram");
1161                                 xo_emit("\tInput histogram:\n");
1162                                 first = 0;
1163                         }
1164                         xo_open_instance("input-histogram");
1165                         if (icmpnames[i] != NULL)
1166                                 xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1167                                         icmpnames[i],
1168                                         icmpstat.icps_inhist[i]);
1169                         else
1170                                 xo_emit(
1171                         "\t\tunknown ICMP #{k:name/%d}: {:count/%lu}\n",
1172                                         i, icmpstat.icps_inhist[i]);
1173                         xo_close_instance("input-histogram");
1174                 }
1175         }
1176         if (!first)
1177                 xo_close_list("input-histogram");
1178
1179         p(icps_reflect, "\t{:sent-packets/%lu} "
1180             "{N:/message response%s generated}\n");
1181         p2(icps_badaddr, "\t{:discard-invalid-return-address/%lu} "
1182             "{N:/invalid return address%s}\n");
1183         p(icps_noroute, "\t{:discard-no-route/%lu} "
1184             "{N:/no return route%s}\n");
1185 #undef p
1186 #undef p1a
1187 #undef p2
1188         if (live) {
1189                 len = sizeof i;
1190                 if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) <
1191                     0)
1192                         return;
1193                 xo_emit("\tICMP address mask responses are "
1194                     "{q:icmp-address-responses/%sabled}\n", i ? "en" : "dis");
1195         }
1196
1197         xo_close_container(name);
1198 }
1199
1200 /*
1201  * Dump IGMP statistics structure.
1202  */
1203 void
1204 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1205 {
1206         struct igmpstat igmpstat;
1207
1208         if (fetch_stats("net.inet.igmp.stats", 0, &igmpstat,
1209             sizeof(igmpstat), kread) != 0)
1210                 return;
1211
1212         if (igmpstat.igps_version != IGPS_VERSION_3) {
1213                 xo_warnx("%s: version mismatch (%d != %d)", __func__,
1214                     igmpstat.igps_version, IGPS_VERSION_3);
1215         }
1216         if (igmpstat.igps_len != IGPS_VERSION3_LEN) {
1217                 xo_warnx("%s: size mismatch (%d != %d)", __func__,
1218                     igmpstat.igps_len, IGPS_VERSION3_LEN);
1219         }
1220
1221         xo_open_container(name);
1222         xo_emit("{T:/%s}:\n", name);
1223
1224 #define p64(f, m) if (igmpstat.f || sflag <= 1) \
1225         xo_emit(m, (uintmax_t) igmpstat.f, plural(igmpstat.f))
1226 #define py64(f, m) if (igmpstat.f || sflag <= 1) \
1227         xo_emit(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f))
1228
1229         p64(igps_rcv_total, "\t{:received-messages/%ju} "
1230             "{N:/message%s received}\n");
1231         p64(igps_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1232             "{N:/message%s received with too few bytes}\n");
1233         p64(igps_rcv_badttl, "\t{:dropped-wrong-ttl/%ju} "
1234             "{N:/message%s received with wrong TTL}\n");
1235         p64(igps_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1236             "{N:/message%s received with bad checksum}\n");
1237         py64(igps_rcv_v1v2_queries, "\t{:received-membership-queries/%ju} "
1238             "{N:/V1\\/V2 membership quer%s received}\n");
1239         py64(igps_rcv_v3_queries, "\t{:received-v3-membership-queries/%ju} "
1240             "{N:/V3 membership quer%s received}\n");
1241         py64(igps_rcv_badqueries, "\t{:dropped-membership-queries/%ju} "
1242             "{N:/membership quer%s received with invalid field(s)}\n");
1243         py64(igps_rcv_gen_queries, "\t{:received-general-queries/%ju} "
1244             "{N:/general quer%s received}\n");
1245         py64(igps_rcv_group_queries, "\t{:received-group-queries/%ju} "
1246             "{N:/group quer%s received}\n");
1247         py64(igps_rcv_gsr_queries, "\t{:received-group-source-queries/%ju} "
1248             "{N:/group-source quer%s received}\n");
1249         py64(igps_drop_gsr_queries, "\t{:dropped-group-source-queries/%ju} "
1250             "{N:/group-source quer%s dropped}\n");
1251         p64(igps_rcv_reports, "\t{:received-membership-requests/%ju} "
1252             "{N:/membership report%s received}\n");
1253         p64(igps_rcv_badreports, "\t{:dropped-membership-reports/%ju} "
1254             "{N:/membership report%s received with invalid field(s)}\n");
1255         p64(igps_rcv_ourreports, "\t"
1256             "{:received-membership-reports-matching/%ju} "
1257             "{N:/membership report%s received for groups to which we belong}"
1258             "\n");
1259         p64(igps_rcv_nora, "\t{:received-v3-reports-no-router-alert/%ju} "
1260             "{N:/V3 report%s received without Router Alert}\n");
1261         p64(igps_snd_reports, "\t{:sent-membership-reports/%ju} "
1262             "{N:/membership report%s sent}\n");
1263 #undef p64
1264 #undef py64
1265         xo_close_container(name);
1266 }
1267
1268 /*
1269  * Dump PIM statistics structure.
1270  */
1271 void
1272 pim_stats(u_long off __unused, const char *name, int af1 __unused,
1273     int proto __unused)
1274 {
1275         struct pimstat pimstat;
1276
1277         if (fetch_stats("net.inet.pim.stats", off, &pimstat,
1278             sizeof(pimstat), kread_counters) != 0)
1279                 return;
1280
1281         xo_open_container(name);
1282         xo_emit("{T:/%s}:\n", name);
1283
1284 #define p(f, m) if (pimstat.f || sflag <= 1) \
1285         xo_emit(m, (uintmax_t)pimstat.f, plural(pimstat.f))
1286 #define py(f, m) if (pimstat.f || sflag <= 1) \
1287         xo_emit(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y")
1288
1289         p(pims_rcv_total_msgs, "\t{:received-messages/%ju} "
1290             "{N:/message%s received}\n");
1291         p(pims_rcv_total_bytes, "\t{:received-bytes/%ju} "
1292             "{N:/byte%s received}\n");
1293         p(pims_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1294             "{N:/message%s received with too few bytes}\n");
1295         p(pims_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1296             "{N:/message%s received with bad checksum}\n");
1297         p(pims_rcv_badversion, "\t{:dropped-bad-version/%ju} "
1298             "{N:/message%s received with bad version}\n");
1299         p(pims_rcv_registers_msgs, "\t{:received-data-register-messages/%ju} "
1300             "{N:/data register message%s received}\n");
1301         p(pims_rcv_registers_bytes, "\t{:received-data-register-bytes/%ju} "
1302             "{N:/data register byte%s received}\n");
1303         p(pims_rcv_registers_wrongiif, "\t"
1304             "{:received-data-register-wrong-interface/%ju} "
1305             "{N:/data register message%s received on wrong iif}\n");
1306         p(pims_rcv_badregisters, "\t{:received-bad-registers/%ju} "
1307             "{N:/bad register%s received}\n");
1308         p(pims_snd_registers_msgs, "\t{:sent-data-register-messages/%ju} "
1309             "{N:/data register message%s sent}\n");
1310         p(pims_snd_registers_bytes, "\t{:sent-data-register-bytes/%ju} "
1311             "{N:/data register byte%s sent}\n");
1312 #undef p
1313 #undef py
1314         xo_close_container(name);
1315 }
1316
1317 /*
1318  * Pretty print an Internet address (net address + port).
1319  */
1320 void
1321 inetprint(const char *container, struct in_addr *in, int port,
1322     const char *proto, int num_port, const int af1)
1323 {
1324         struct servent *sp = 0;
1325         char line[80], *cp;
1326         int width;
1327         size_t alen, plen;
1328
1329         if (container)
1330                 xo_open_container(container);
1331
1332         if (Wflag)
1333             snprintf(line, sizeof(line), "%s.", inetname(in));
1334         else
1335             snprintf(line, sizeof(line), "%.*s.",
1336                 (Aflag && !num_port) ? 12 : 16, inetname(in));
1337         alen = strlen(line);
1338         cp = line + alen;
1339         if (!num_port && port)
1340                 sp = getservbyport((int)port, proto);
1341         if (sp || port == 0)
1342                 snprintf(cp, sizeof(line) - alen,
1343                     "%.15s ", sp ? sp->s_name : "*");
1344         else
1345                 snprintf(cp, sizeof(line) - alen,
1346                     "%d ", ntohs((u_short)port));
1347         width = (Aflag && !Wflag) ? 18 :
1348                 ((!Wflag || af1 == AF_INET) ? 22 : 45);
1349         if (Wflag)
1350                 xo_emit("{d:target/%-*s} ", width, line);
1351         else
1352                 xo_emit("{d:target/%-*.*s} ", width, width, line);
1353
1354         plen = strlen(cp) - 1;
1355         alen--;
1356         xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
1357             plen, cp);
1358
1359         if (container)
1360                 xo_close_container(container);
1361 }
1362
1363 /*
1364  * Construct an Internet address representation.
1365  * If numeric_addr has been supplied, give
1366  * numeric value, otherwise try for symbolic name.
1367  */
1368 char *
1369 inetname(struct in_addr *inp)
1370 {
1371         char *cp;
1372         static char line[MAXHOSTNAMELEN];
1373         struct hostent *hp;
1374         struct netent *np;
1375
1376         cp = 0;
1377         if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1378                 int net = inet_netof(*inp);
1379                 int lna = inet_lnaof(*inp);
1380
1381                 if (lna == INADDR_ANY) {
1382                         np = getnetbyaddr(net, AF_INET);
1383                         if (np)
1384                                 cp = np->n_name;
1385                 }
1386                 if (cp == NULL) {
1387                         hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1388                         if (hp) {
1389                                 cp = hp->h_name;
1390                                 trimdomain(cp, strlen(cp));
1391                         }
1392                 }
1393         }
1394         if (inp->s_addr == INADDR_ANY)
1395                 strcpy(line, "*");
1396         else if (cp) {
1397                 strlcpy(line, cp, sizeof(line));
1398         } else {
1399                 inp->s_addr = ntohl(inp->s_addr);
1400 #define C(x)    ((u_int)((x) & 0xff))
1401                 snprintf(line, sizeof(line), "%u.%u.%u.%u",
1402                     C(inp->s_addr >> 24), C(inp->s_addr >> 16),
1403                     C(inp->s_addr >> 8), C(inp->s_addr));
1404         }
1405         return (line);
1406 }