usr.bin/netstat/sctp.c

   1 /*-
   2  * Copyright (c) 2001-2007, by Weongyo Jeong. All rights reserved.
   3  * Copyright (c) 2011, by Michael Tuexen. 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 are met:
   7  *
   8  * a) Redistributions of source code must retain the above copyright notice,
   9  *   this list of conditions and the following disclaimer.
  10  *
  11  * b) Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *   the documentation and/or other materials provided with the distribution.
  14  *
  15  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  16  *    contributors may be used to endorse or promote products derived
  17  *    from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  29  * THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #if 0
  33 #ifndef lint
  34 static char sccsid[] = "@(#)sctp.c      0.1 (Berkeley) 4/18/2007";
  35 #endif /* not lint */
  36 #endif
  37
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 #include <sys/param.h>
  42 #include <sys/queue.h>
  43 #include <sys/types.h>
  44 #include <sys/socket.h>
  45 #include <sys/socketvar.h>
  46 #include <sys/sysctl.h>
  47 #include <sys/protosw.h>
  48
  49 #include <netinet/in.h>
  50 #include <netinet/sctp.h>
  51 #include <netinet/sctp_constants.h>
  52 #include <arpa/inet.h>
  53
  54 #include <err.h>
  55 #include <errno.h>
  56 #include <libutil.h>
  57 #include <netdb.h>
  58 #include <stdint.h>
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <stdbool.h>
  62 #include <string.h>
  63 #include <unistd.h>
  64 #include "netstat.h"
  65 #include <libxo/xo.h>
  66
  67 #ifdef SCTP
  68
  69 static void sctp_statesprint(uint32_t state);
  70
  71 #define NETSTAT_SCTP_STATES_CLOSED              0x0
  72 #define NETSTAT_SCTP_STATES_BOUND               0x1
  73 #define NETSTAT_SCTP_STATES_LISTEN              0x2
  74 #define NETSTAT_SCTP_STATES_COOKIE_WAIT         0x3
  75 #define NETSTAT_SCTP_STATES_COOKIE_ECHOED       0x4
  76 #define NETSTAT_SCTP_STATES_ESTABLISHED         0x5
  77 #define NETSTAT_SCTP_STATES_SHUTDOWN_SENT       0x6
  78 #define NETSTAT_SCTP_STATES_SHUTDOWN_RECEIVED   0x7
  79 #define NETSTAT_SCTP_STATES_SHUTDOWN_ACK_SENT   0x8
  80 #define NETSTAT_SCTP_STATES_SHUTDOWN_PENDING    0x9
  81
  82 static const char *sctpstates[] = {
  83         "CLOSED",
  84         "BOUND",
  85         "LISTEN",
  86         "COOKIE_WAIT",
  87         "COOKIE_ECHOED",
  88         "ESTABLISHED",
  89         "SHUTDOWN_SENT",
  90         "SHUTDOWN_RECEIVED",
  91         "SHUTDOWN_ACK_SENT",
  92         "SHUTDOWN_PENDING"
  93 };
  94
  95 static LIST_HEAD(xladdr_list, xladdr_entry) xladdr_head;
  96 struct xladdr_entry {
  97         struct xsctp_laddr *xladdr;
  98         LIST_ENTRY(xladdr_entry) xladdr_entries;
  99 };
 100
 101 static LIST_HEAD(xraddr_list, xraddr_entry) xraddr_head;
 102 struct xraddr_entry {
 103         struct xsctp_raddr *xraddr;
 104         LIST_ENTRY(xraddr_entry) xraddr_entries;
 105 };
 106
 107 /*
 108  * Construct an Internet address representation.
 109  * If numeric_addr has been supplied, give
 110  * numeric value, otherwise try for symbolic name.
 111  */
 112 #ifdef INET
 113 static char *
 114 inetname(struct in_addr *inp)
 115 {
 116         char *cp;
 117         static char line[MAXHOSTNAMELEN];
 118         struct hostent *hp;
 119         struct netent *np;
 120
 121         cp = 0;
 122         if (!numeric_addr && inp->s_addr != INADDR_ANY) {
 123                 int net = inet_netof(*inp);
 124                 int lna = inet_lnaof(*inp);
 125
 126                 if (lna == INADDR_ANY) {
 127                         np = getnetbyaddr(net, AF_INET);
 128                         if (np)
 129                                 cp = np->n_name;
 130                 }
 131                 if (cp == 0) {
 132                         hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
 133                         if (hp) {
 134                                 cp = hp->h_name;
 135                                 trimdomain(cp, strlen(cp));
 136                         }
 137                 }
 138         }
 139         if (inp->s_addr == INADDR_ANY)
 140                 strcpy(line, "*");
 141         else if (cp) {
 142                 strlcpy(line, cp, sizeof(line));
 143         } else {
 144                 inp->s_addr = ntohl(inp->s_addr);
 145 #define C(x)    ((u_int)((x) & 0xff))
 146                 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
 147                     C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
 148                 inp->s_addr = htonl(inp->s_addr);
 149         }
 150         return (line);
 151 }
 152 #endif
 153
 154 #ifdef INET6
 155 static char ntop_buf[INET6_ADDRSTRLEN];
 156
 157 static char *
 158 inet6name(struct in6_addr *in6p)
 159 {
 160         char *cp;
 161         static char line[50];
 162         struct hostent *hp;
 163         static char domain[MAXHOSTNAMELEN];
 164         static int first = 1;
 165
 166         if (first && !numeric_addr) {
 167                 first = 0;
 168                 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
 169                     (cp = strchr(domain, '.')))
 170                         (void) strcpy(domain, cp + 1);
 171                 else
 172                         domain[0] = 0;
 173         }
 174         cp = 0;
 175         if (!numeric_addr && !IN6_IS_ADDR_UNSPECIFIED(in6p)) {
 176                 hp = gethostbyaddr((char *)in6p, sizeof(*in6p), AF_INET6);
 177                 if (hp) {
 178                         if ((cp = strchr(hp->h_name, '.')) &&
 179                             !strcmp(cp + 1, domain))
 180                                 *cp = 0;
 181                         cp = hp->h_name;
 182                 }
 183         }
 184         if (IN6_IS_ADDR_UNSPECIFIED(in6p))
 185                 strcpy(line, "*");
 186         else if (cp)
 187                 strcpy(line, cp);
 188         else
 189                 sprintf(line, "%s",
 190                         inet_ntop(AF_INET6, (void *)in6p, ntop_buf,
 191                                 sizeof(ntop_buf)));
 192         return (line);
 193 }
 194 #endif
 195
 196 static void
 197 sctp_print_address(const char *container, union sctp_sockstore *address,
 198     int port, int num_port)
 199 {
 200         struct servent *sp = 0;
 201         char line[80], *cp;
 202         int width;
 203
 204         if (container)
 205                 xo_open_container(container);
 206
 207         switch (address->sa.sa_family) {
 208 #ifdef INET
 209         case AF_INET:
 210                 sprintf(line, "%.*s.", Wflag ? 39 : 16, inetname(&address->sin.sin_addr));
 211                 break;
 212 #endif
 213 #ifdef INET6
 214         case AF_INET6:
 215                 sprintf(line, "%.*s.", Wflag ? 39 : 16, inet6name(&address->sin6.sin6_addr));
 216                 break;
 217 #endif
 218         default:
 219                 sprintf(line, "%.*s.", Wflag ? 39 : 16, "");
 220                 break;
 221         }
 222         cp = strchr(line, '\0');
 223         if (!num_port && port)
 224                 sp = getservbyport((int)port, "sctp");
 225         if (sp || port == 0)
 226                 sprintf(cp, "%.15s ", sp ? sp->s_name : "*");
 227         else
 228                 sprintf(cp, "%d ", ntohs((u_short)port));
 229         width = Wflag ? 45 : 22;
 230         xo_emit("{d:target/%-*.*s} ", width, width, line);
 231
 232         int alen = cp - line - 1, plen = strlen(cp) - 1;
 233         xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
 234             plen, cp);
 235
 236         if (container)
 237                 xo_close_container(container);
 238 }
 239
 240 static int
 241 sctp_skip_xinpcb_ifneed(char *buf, const size_t buflen, size_t *offset)
 242 {
 243         int exist_tcb = 0;
 244         struct xsctp_tcb *xstcb;
 245         struct xsctp_raddr *xraddr;
 246         struct xsctp_laddr *xladdr;
 247
 248         while (*offset < buflen) {
 249                 xladdr = (struct xsctp_laddr *)(buf + *offset);
 250                 *offset += sizeof(struct xsctp_laddr);
 251                 if (xladdr->last == 1)
 252                         break;
 253         }
 254
 255         while (*offset < buflen) {
 256                 xstcb = (struct xsctp_tcb *)(buf + *offset);
 257                 *offset += sizeof(struct xsctp_tcb);
 258                 if (xstcb->last == 1)
 259                         break;
 260
 261                 exist_tcb = 1;
 262
 263                 while (*offset < buflen) {
 264                         xladdr = (struct xsctp_laddr *)(buf + *offset);
 265                         *offset += sizeof(struct xsctp_laddr);
 266                         if (xladdr->last == 1)
 267                                 break;
 268                 }
 269
 270                 while (*offset < buflen) {
 271                         xraddr = (struct xsctp_raddr *)(buf + *offset);
 272                         *offset += sizeof(struct xsctp_raddr);
 273                         if (xraddr->last == 1)
 274                                 break;
 275                 }
 276         }
 277
 278         /*
 279          * If Lflag is set, we don't care about the return value.
 280          */
 281         if (Lflag)
 282                 return 0;
 283
 284         return exist_tcb;
 285 }
 286
 287 static void
 288 sctp_process_tcb(struct xsctp_tcb *xstcb,
 289     char *buf, const size_t buflen, size_t *offset, int *indent)
 290 {
 291         int i, xl_total = 0, xr_total = 0, x_max;
 292         struct xsctp_raddr *xraddr;
 293         struct xsctp_laddr *xladdr;
 294         struct xladdr_entry *prev_xl = NULL, *xl = NULL, *xl_tmp;
 295         struct xraddr_entry *prev_xr = NULL, *xr = NULL, *xr_tmp;
 296
 297         LIST_INIT(&xladdr_head);
 298         LIST_INIT(&xraddr_head);
 299
 300         /*
 301          * Make `struct xladdr_list' list and `struct xraddr_list' list
 302          * to handle the address flexibly.
 303          */
 304         while (*offset < buflen) {
 305                 xladdr = (struct xsctp_laddr *)(buf + *offset);
 306                 *offset += sizeof(struct xsctp_laddr);
 307                 if (xladdr->last == 1)
 308                         break;
 309
 310                 prev_xl = xl;
 311                 xl = malloc(sizeof(struct xladdr_entry));
 312                 if (xl == NULL) {
 313                         xo_warnx("malloc %lu bytes",
 314                             (u_long)sizeof(struct xladdr_entry));
 315                         goto out;
 316                 }
 317                 xl->xladdr = xladdr;
 318                 if (prev_xl == NULL)
 319                         LIST_INSERT_HEAD(&xladdr_head, xl, xladdr_entries);
 320                 else
 321                         LIST_INSERT_AFTER(prev_xl, xl, xladdr_entries);
 322                 xl_total++;
 323         }
 324
 325         while (*offset < buflen) {
 326                 xraddr = (struct xsctp_raddr *)(buf + *offset);
 327                 *offset += sizeof(struct xsctp_raddr);
 328                 if (xraddr->last == 1)
 329                         break;
 330
 331                 prev_xr = xr;
 332                 xr = malloc(sizeof(struct xraddr_entry));
 333                 if (xr == NULL) {
 334                         xo_warnx("malloc %lu bytes",
 335                             (u_long)sizeof(struct xraddr_entry));
 336                         goto out;
 337                 }
 338                 xr->xraddr = xraddr;
 339                 if (prev_xr == NULL)
 340                         LIST_INSERT_HEAD(&xraddr_head, xr, xraddr_entries);
 341                 else
 342                         LIST_INSERT_AFTER(prev_xr, xr, xraddr_entries);
 343                 xr_total++;
 344         }
 345
 346         /*
 347          * Let's print the address infos.
 348          */
 349         xo_open_list("address");
 350         xl = LIST_FIRST(&xladdr_head);
 351         xr = LIST_FIRST(&xraddr_head);
 352         x_max = (xl_total > xr_total) ? xl_total : xr_total;
 353         for (i = 0; i < x_max; i++) {
 354                 xo_open_instance("address");
 355
 356                 if (((*indent == 0) && i > 0) || *indent > 0)
 357                         xo_emit("{P:/%-12s} ", " ");
 358
 359                 if (xl != NULL) {
 360                         sctp_print_address("local", &(xl->xladdr->address),
 361                             htons(xstcb->local_port), numeric_port);
 362                 } else {
 363                         if (Wflag) {
 364                                 xo_emit("{P:/%-45s} ", " ");
 365                         } else {
 366                                 xo_emit("{P:/%-22s} ", " ");
 367                         }
 368                 }
 369
 370                 if (xr != NULL && !Lflag) {
 371                         sctp_print_address("remote", &(xr->xraddr->address),
 372                             htons(xstcb->remote_port), numeric_port);
 373                 }
 374
 375                 if (xl != NULL)
 376                         xl = LIST_NEXT(xl, xladdr_entries);
 377                 if (xr != NULL)
 378                         xr = LIST_NEXT(xr, xraddr_entries);
 379
 380                 if (i == 0 && !Lflag)
 381                         sctp_statesprint(xstcb->state);
 382
 383                 if (i < x_max)
 384                         xo_emit("\n");
 385                 xo_close_instance("address");
 386         }
 387
 388 out:
 389         /*
 390          * Free the list which be used to handle the address.
 391          */
 392         xl = LIST_FIRST(&xladdr_head);
 393         while (xl != NULL) {
 394                 xl_tmp = LIST_NEXT(xl, xladdr_entries);
 395                 free(xl);
 396                 xl = xl_tmp;
 397         }
 398
 399         xr = LIST_FIRST(&xraddr_head);
 400         while (xr != NULL) {
 401                 xr_tmp = LIST_NEXT(xr, xraddr_entries);
 402                 free(xr);
 403                 xr = xr_tmp;
 404         }
 405 }
 406
 407 static void
 408 sctp_process_inpcb(struct xsctp_inpcb *xinpcb,
 409     char *buf, const size_t buflen, size_t *offset)
 410 {
 411         int indent = 0, xladdr_total = 0, is_listening = 0;
 412         static int first = 1;
 413         const char *tname, *pname;
 414         struct xsctp_tcb *xstcb;
 415         struct xsctp_laddr *xladdr;
 416         size_t offset_laddr;
 417         int process_closed;
 418
 419         if (xinpcb->maxqlen > 0)
 420                 is_listening = 1;
 421
 422         if (first) {
 423                 if (!Lflag) {
 424                         xo_emit("Active SCTP associations");
 425                         if (aflag)
 426                                 xo_emit(" (including servers)");
 427                 } else
 428                         xo_emit("Current listen queue sizes (qlen/maxqlen)");
 429                 xo_emit("\n");
 430                 if (Lflag)
 431                         xo_emit("{T:/%-6.6s} {T:/%-5.5s} {T:/%-8.8s} "
 432                             "{T:/%-22.22s}\n",
 433                             "Proto", "Type", "Listen", "Local Address");
 434                 else
 435                         if (Wflag)
 436                                 xo_emit("{T:/%-6.6s} {T:/%-5.5s} {T:/%-45.45s} "
 437                                     "{T:/%-45.45s} {T:/%s}\n",
 438                                     "Proto", "Type",
 439                                     "Local Address", "Foreign Address",
 440                                     "(state)");
 441                         else
 442                                 xo_emit("{T:/%-6.6s} {T:/%-5.5s} {T:/%-22.22s} "
 443                                     "{T:/%-22.22s} {T:/%s}\n",
 444                                     "Proto", "Type",
 445                                     "Local Address", "Foreign Address",
 446                                     "(state)");
 447                 first = 0;
 448         }
 449         xladdr = (struct xsctp_laddr *)(buf + *offset);
 450         if (Lflag && !is_listening) {
 451                 sctp_skip_xinpcb_ifneed(buf, buflen, offset);
 452                 return;
 453         }
 454
 455         if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
 456                 /* Can't distinguish between sctp46 and sctp6 */
 457                 pname = "sctp46";
 458         } else {
 459                 pname = "sctp4";
 460         }
 461
 462         if (xinpcb->flags & SCTP_PCB_FLAGS_TCPTYPE)
 463                 tname = "1to1";
 464         else if (xinpcb->flags & SCTP_PCB_FLAGS_UDPTYPE)
 465                 tname = "1toN";
 466         else
 467                 tname = "????";
 468
 469         if (Lflag) {
 470                 char buf1[22];
 471
 472                 snprintf(buf1, sizeof buf1, "%u/%u",
 473                     xinpcb->qlen, xinpcb->maxqlen);
 474                 xo_emit("{:protocol/%-6.6s/%s} {:type/%-5.5s/%s} ",
 475                     pname, tname);
 476                 xo_emit("{d:queues/%-8.8s}{e:queue-len/%hu}"
 477                     "{e:max-queue-len/%hu} ",
 478                     buf1, xinpcb->qlen, xinpcb->maxqlen);
 479         }
 480
 481         offset_laddr = *offset;
 482         process_closed = 0;
 483
 484         xo_open_list("local-address");
 485 retry:
 486         while (*offset < buflen) {
 487                 xladdr = (struct xsctp_laddr *)(buf + *offset);
 488                 *offset += sizeof(struct xsctp_laddr);
 489                 if (xladdr->last) {
 490                         if (aflag && !Lflag && (xladdr_total == 0) && process_closed) {
 491                                 xo_open_instance("local-address");
 492
 493                                 xo_emit("{:protocol/%-6.6s/%s} "
 494                                     "{:type/%-5.5s/%s} ", pname, tname);
 495                                 if (Wflag) {
 496                                         xo_emit("{P:/%-91.91s/%s} "
 497                                             "{:state/CLOSED}", " ");
 498                                 } else {
 499                                         xo_emit("{P:/%-45.45s/%s} "
 500                                             "{:state/CLOSED}", " ");
 501                                 }
 502                                 xo_close_instance("local-address");
 503                         }
 504                         if (process_closed || is_listening) {
 505                                 xo_emit("\n");
 506                         }
 507                         break;
 508                 }
 509
 510                 if (!Lflag && !is_listening && !process_closed)
 511                         continue;
 512
 513                 xo_open_instance("local-address");
 514
 515                 if (xladdr_total == 0) {
 516                         xo_emit("{:protocol/%-6.6s/%s} {:type/%-5.5s/%s} ",
 517                             pname, tname);
 518                 } else {
 519                         xo_emit("\n");
 520                         xo_emit(Lflag ? "{P:/%-21.21s} " : "{P:/%-12.12s} ",
 521                             " ");
 522                 }
 523                 sctp_print_address("local", &(xladdr->address),
 524                     htons(xinpcb->local_port), numeric_port);
 525                 if (aflag && !Lflag && xladdr_total == 0) {
 526                         if (Wflag) {
 527                                 if (process_closed) {
 528                                         xo_emit("{P:/%-45.45s} "
 529                                             "{:state/CLOSED}", " ");
 530                                 } else {
 531                                         xo_emit("{P:/%-45.45s} "
 532                                             "{:state:LISTEN}", " ");
 533                                 }
 534                         } else {
 535                                 if (process_closed) {
 536                                         xo_emit("{P:/%-22.22s} "
 537                                             "{:state/CLOSED}", " ");
 538                                 } else {
 539                                         xo_emit("{P:/%-22.22s} "
 540                                             "{:state/LISTEN}", " ");
 541                                 }
 542                         }
 543                 }
 544                 xladdr_total++;
 545                 xo_close_instance("local-address");
 546         }
 547
 548         xstcb = (struct xsctp_tcb *)(buf + *offset);
 549         *offset += sizeof(struct xsctp_tcb);
 550         if (aflag && (xladdr_total == 0) && xstcb->last && !process_closed) {
 551                 process_closed = 1;
 552                 *offset = offset_laddr;
 553                 goto retry;
 554         }
 555         while (xstcb->last == 0 && *offset < buflen) {
 556                 xo_emit("{:protocol/%-6.6s/%s} {:type/%-5.5s/%s} ",
 557                     pname, tname);
 558                 sctp_process_tcb(xstcb, buf, buflen, offset, &indent);
 559                 indent++;
 560                 xstcb = (struct xsctp_tcb *)(buf + *offset);
 561                 *offset += sizeof(struct xsctp_tcb);
 562         }
 563
 564         xo_close_list("local-address");
 565 }
 566
 567 /*
 568  * Print a summary of SCTP connections related to an Internet
 569  * protocol.
 570  */
 571 void
 572 sctp_protopr(u_long off __unused,
 573     const char *name __unused, int af1 __unused, int proto)
 574 {
 575         char *buf;
 576         const char *mibvar = "net.inet.sctp.assoclist";
 577         size_t offset = 0;
 578         size_t len = 0;
 579         struct xsctp_inpcb *xinpcb;
 580
 581         if (proto != IPPROTO_SCTP)
 582                 return;
 583
 584         if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
 585                 if (errno != ENOENT)
 586                         xo_warn("sysctl: %s", mibvar);
 587                 return;
 588         }
 589         if ((buf = malloc(len)) == 0) {
 590                 xo_warnx("malloc %lu bytes", (u_long)len);
 591                 return;
 592         }
 593         if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
 594                 xo_warn("sysctl: %s", mibvar);
 595                 free(buf);
 596                 return;
 597         }
 598
 599         xinpcb = (struct xsctp_inpcb *)(buf + offset);
 600         offset += sizeof(struct xsctp_inpcb);
 601         while (xinpcb->last == 0 && offset < len) {
 602                 sctp_process_inpcb(xinpcb, buf, (const size_t)len,
 603                     &offset);
 604
 605                 xinpcb = (struct xsctp_inpcb *)(buf + offset);
 606                 offset += sizeof(struct xsctp_inpcb);
 607         }
 608
 609         free(buf);
 610 }
 611
 612 static void
 613 sctp_statesprint(uint32_t state)
 614 {
 615         int idx;
 616
 617         switch (state) {
 618         case SCTP_CLOSED:
 619                 idx = NETSTAT_SCTP_STATES_CLOSED;
 620                 break;
 621         case SCTP_BOUND:
 622                 idx = NETSTAT_SCTP_STATES_BOUND;
 623                 break;
 624         case SCTP_LISTEN:
 625                 idx = NETSTAT_SCTP_STATES_LISTEN;
 626                 break;
 627         case SCTP_COOKIE_WAIT:
 628                 idx = NETSTAT_SCTP_STATES_COOKIE_WAIT;
 629                 break;
 630         case SCTP_COOKIE_ECHOED:
 631                 idx = NETSTAT_SCTP_STATES_COOKIE_ECHOED;
 632                 break;
 633         case SCTP_ESTABLISHED:
 634                 idx = NETSTAT_SCTP_STATES_ESTABLISHED;
 635                 break;
 636         case SCTP_SHUTDOWN_SENT:
 637                 idx = NETSTAT_SCTP_STATES_SHUTDOWN_SENT;
 638                 break;
 639         case SCTP_SHUTDOWN_RECEIVED:
 640                 idx = NETSTAT_SCTP_STATES_SHUTDOWN_RECEIVED;
 641                 break;
 642         case SCTP_SHUTDOWN_ACK_SENT:
 643                 idx = NETSTAT_SCTP_STATES_SHUTDOWN_ACK_SENT;
 644                 break;
 645         case SCTP_SHUTDOWN_PENDING:
 646                 idx = NETSTAT_SCTP_STATES_SHUTDOWN_PENDING;
 647                 break;
 648         default:
 649                 xo_emit("UNKNOWN {:state/0x%08x}", state);
 650                 return;
 651         }
 652
 653         xo_emit("{:state/%s}", sctpstates[idx]);
 654 }
 655
 656 /*
 657  * Dump SCTP statistics structure.
 658  */
 659 void
 660 sctp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
 661 {
 662         struct sctpstat sctpstat;
 663
 664         if (fetch_stats("net.inet.sctp.stats", off, &sctpstat,
 665             sizeof(sctpstat), kread) != 0)
 666                 return;
 667
 668         xo_open_container(name);
 669         xo_emit("{T:/%s}:\n", name);
 670
 671 #define p(f, m) if (sctpstat.f || sflag <= 1) \
 672         xo_emit(m, (uintmax_t)sctpstat.f, plural(sctpstat.f))
 673 #define p1a(f, m) if (sctpstat.f || sflag <= 1) \
 674         xo_emit(m, (uintmax_t)sctpstat.f)
 675
 676         /*
 677          * input statistics
 678          */
 679         p(sctps_recvpackets, "\t{:received-packets/%ju} "
 680             "{N:/input packet%s}\n");
 681         p(sctps_recvdatagrams, "\t\t{:received-datagrams/%ju} "
 682             "{N:/datagram%s}\n");
 683         p(sctps_recvpktwithdata, "\t\t{:received-with-data/%ju} "
 684             "{N:/packet%s that had data}\n");
 685         p(sctps_recvsacks, "\t\t{:received-sack-chunks/%ju} "
 686             "{N:/input SACK chunk%s}\n");
 687         p(sctps_recvdata, "\t\t{:received-data-chunks/%ju} "
 688             "{N:/input DATA chunk%s}\n");
 689         p(sctps_recvdupdata, "\t\t{:received-duplicate-data-chunks/%ju} "
 690             "{N:/duplicate DATA chunk%s}\n");
 691         p(sctps_recvheartbeat, "\t\t{:received-hb-chunks/%ju} "
 692             "{N:/input HB chunk%s}\n");
 693         p(sctps_recvheartbeatack, "\t\t{:received-hb-ack-chunks/%ju} "
 694             "{N:/HB-ACK chunk%s}\n");
 695         p(sctps_recvecne, "\t\t{:received-ecne-chunks/%ju} "
 696             "{N:/input ECNE chunk%s}\n");
 697         p(sctps_recvauth, "\t\t{:received-auth-chunks/%ju} "
 698             "{N:/input AUTH chunk%s}\n");
 699         p(sctps_recvauthmissing, "\t\t{:dropped-missing-auth/%ju} "
 700             "{N:/chunk%s missing AUTH}\n");
 701         p(sctps_recvivalhmacid, "\t\t{:dropped-invalid-hmac/%ju} "
 702             "{N:/invalid HMAC id%s received}\n");
 703         p(sctps_recvivalkeyid, "\t\t{:dropped-invalid-secret/%ju} "
 704             "{N:/invalid secret id%s received}\n");
 705         p1a(sctps_recvauthfailed, "\t\t{:dropped-auth-failed/%ju} "
 706             "{N:/auth failed}\n");
 707         p1a(sctps_recvexpress, "\t\t{:received-fast-path/%ju} "
 708             "{N:/fast path receives all one chunk}\n");
 709         p1a(sctps_recvexpressm, "\t\t{:receives-fast-path-multipart/%ju} "
 710             "{N:/fast path multi-part data}\n");
 711
 712         /*
 713          * output statistics
 714          */
 715         p(sctps_sendpackets, "\t{:sent-packets/%ju} "
 716             "{N:/output packet%s}\n");
 717         p(sctps_sendsacks, "\t\t{:sent-sacks/%ju} "
 718             "{N:/output SACK%s}\n");
 719         p(sctps_senddata, "\t\t{:sent-data-chunks/%ju} "
 720             "{N:/output DATA chunk%s}\n");
 721         p(sctps_sendretransdata, "\t\t{:sent-retransmitted-data-chunks/%ju} "
 722             "{N:/retransmitted DATA chunk%s}\n");
 723         p(sctps_sendfastretrans, "\t\t"
 724             "{:sent-fast-retransmitted-data-chunks/%ju} "
 725             "{N:/fast retransmitted DATA chunk%s}\n");
 726         p(sctps_sendmultfastretrans, "\t\t"
 727             "{:sent-fast-retransmitted-data-chunk-multiple-times/%ju} "
 728             "{N:/FR'%s that happened more than once to same chunk}\n");
 729         p(sctps_sendheartbeat, "\t\t{:sent-hb-chunks/%ju} "
 730             "{N:/output HB chunk%s}\n");
 731         p(sctps_sendecne, "\t\t{:sent-ecne-chunks/%ju} "
 732             "{N:/output ECNE chunk%s}\n");
 733         p(sctps_sendauth, "\t\t{:sent-auth-chunks/%ju} "
 734             "{N:/output AUTH chunk%s}\n");
 735         p1a(sctps_senderrors, "\t\t{:send-errors/%ju} "
 736             "{N:/ip_output error counter}\n");
 737
 738         /*
 739          * PCKDROPREP statistics
 740          */
 741         xo_emit("\t{T:Packet drop statistics}:\n");
 742         xo_open_container("drop-statistics");
 743         p1a(sctps_pdrpfmbox, "\t\t{:middle-box/%ju} "
 744             "{N:/from middle box}\n");
 745         p1a(sctps_pdrpfehos, "\t\t{:end-host/%ju} "
 746             "{N:/from end host}\n");
 747         p1a(sctps_pdrpmbda, "\t\t{:with-data/%ju} "
 748             "{N:/with data}\n");
 749         p1a(sctps_pdrpmbct, "\t\t{:non-data/%ju} "
 750             "{N:/non-data, non-endhost}\n");
 751         p1a(sctps_pdrpbwrpt, "\t\t{:non-endhost/%ju} "
 752             "{N:/non-endhost, bandwidth rep only}\n");
 753         p1a(sctps_pdrpcrupt, "\t\t{:short-header/%ju} "
 754             "{N:/not enough for chunk header}\n");
 755         p1a(sctps_pdrpnedat, "\t\t{:short-data/%ju} "
 756             "{N:/not enough data to confirm}\n");
 757         p1a(sctps_pdrppdbrk, "\t\t{:chunk-break/%ju} "
 758             "{N:/where process_chunk_drop said break}\n");
 759         p1a(sctps_pdrptsnnf, "\t\t{:tsn-not-found/%ju} "
 760             "{N:/failed to find TSN}\n");
 761         p1a(sctps_pdrpdnfnd, "\t\t{:reverse-tsn/%ju} "
 762             "{N:/attempt reverse TSN lookup}\n");
 763         p1a(sctps_pdrpdiwnp, "\t\t{:confirmed-zero-window/%ju} "
 764             "{N:/e-host confirms zero-rwnd}\n");
 765         p1a(sctps_pdrpdizrw, "\t\t{:middle-box-no-space/%ju} "
 766             "{N:/midbox confirms no space}\n");
 767         p1a(sctps_pdrpbadd, "\t\t{:bad-data/%ju} "
 768             "{N:/data did not match TSN}\n");
 769         p(sctps_pdrpmark, "\t\t{:tsn-marked-fast-retransmission/%ju} "
 770             "{N:/TSN'%s marked for Fast Retran}\n");
 771         xo_close_container("drop-statistics");
 772
 773         /*
 774          * Timeouts
 775          */
 776         xo_emit("\t{T:Timeouts}:\n");
 777         xo_open_container("timeouts");
 778         p(sctps_timoiterator, "\t\t{:iterator/%ju} "
 779             "{N:/iterator timer%s fired}\n");
 780         p(sctps_timodata, "\t\t{:t3-data/%ju} "
 781             "{N:/T3 data time out%s}\n");
 782         p(sctps_timowindowprobe, "\t\t{:window-probe/%ju} "
 783             "{N:/window probe (T3) timer%s fired}\n");
 784         p(sctps_timoinit, "\t\t{:init-timer/%ju} "
 785             "{N:/INIT timer%s fired}\n");
 786         p(sctps_timosack, "\t\t{:sack-timer/%ju} "
 787             "{N:/sack timer%s fired}\n");
 788         p(sctps_timoshutdown, "\t\t{:shutdown-timer/%ju} "
 789             "{N:/shutdown timer%s fired}\n");
 790         p(sctps_timoheartbeat, "\t\t{:heartbeat-timer/%ju} "
 791             "{N:/heartbeat timer%s fired}\n");
 792         p1a(sctps_timocookie, "\t\t{:cookie-timer/%ju} "
 793             "{N:/a cookie timeout fired}\n");
 794         p1a(sctps_timosecret, "\t\t{:endpoint-changed-cookie/%ju} "
 795             "{N:/an endpoint changed its cook}ie"
 796             "secret\n");
 797         p(sctps_timopathmtu, "\t\t{:pmtu-timer/%ju} "
 798             "{N:/PMTU timer%s fired}\n");
 799         p(sctps_timoshutdownack, "\t\t{:shutdown-timer/%ju} "
 800             "{N:/shutdown ack timer%s fired}\n");
 801         p(sctps_timoshutdownguard, "\t\t{:shutdown-guard-timer/%ju} "
 802             "{N:/shutdown guard timer%s fired}\n");
 803         p(sctps_timostrmrst, "\t\t{:stream-reset-timer/%ju} "
 804             "{N:/stream reset timer%s fired}\n");
 805         p(sctps_timoearlyfr, "\t\t{:early-fast-retransmission-timer/%ju} "
 806             "{N:/early FR timer%s fired}\n");
 807         p1a(sctps_timoasconf, "\t\t{:asconf-timer/%ju} "
 808             "{N:/an asconf timer fired}\n");
 809         p1a(sctps_timoautoclose, "\t\t{:auto-close-timer/%ju} "
 810             "{N:/auto close timer fired}\n");
 811         p(sctps_timoassockill, "\t\t{:asoc-free-timer/%ju} "
 812             "{N:/asoc free timer%s expired}\n");
 813         p(sctps_timoinpkill, "\t\t{:input-free-timer/%ju} "
 814             "{N:/inp free timer%s expired}\n");
 815         xo_close_container("timeouts");
 816
 817 #if 0
 818         /*
 819          * Early fast retransmission counters
 820          */
 821         p(sctps_earlyfrstart, "\t%ju TODO:sctps_earlyfrstart\n");
 822         p(sctps_earlyfrstop, "\t%ju TODO:sctps_earlyfrstop\n");
 823         p(sctps_earlyfrmrkretrans, "\t%ju TODO:sctps_earlyfrmrkretrans\n");
 824         p(sctps_earlyfrstpout, "\t%ju TODO:sctps_earlyfrstpout\n");
 825         p(sctps_earlyfrstpidsck1, "\t%ju TODO:sctps_earlyfrstpidsck1\n");
 826         p(sctps_earlyfrstpidsck2, "\t%ju TODO:sctps_earlyfrstpidsck2\n");
 827         p(sctps_earlyfrstpidsck3, "\t%ju TODO:sctps_earlyfrstpidsck3\n");
 828         p(sctps_earlyfrstpidsck4, "\t%ju TODO:sctps_earlyfrstpidsck4\n");
 829         p(sctps_earlyfrstrid, "\t%ju TODO:sctps_earlyfrstrid\n");
 830         p(sctps_earlyfrstrout, "\t%ju TODO:sctps_earlyfrstrout\n");
 831         p(sctps_earlyfrstrtmr, "\t%ju TODO:sctps_earlyfrstrtmr\n");
 832 #endif
 833
 834         /*
 835          * Others
 836          */
 837         p1a(sctps_hdrops, "\t{:dropped-too-short/%ju} "
 838             "{N:/packet shorter than header}\n");
 839         p1a(sctps_badsum, "\t{:dropped-bad-checksum/%ju} "
 840             "{N:/checksum error}\n");
 841         p1a(sctps_noport, "\t{:dropped-no-endpoint/%ju} "
 842             "{N:/no endpoint for port}\n");
 843         p1a(sctps_badvtag, "\t{:dropped-bad-v-tag/%ju} "
 844             "{N:/bad v-tag}\n");
 845         p1a(sctps_badsid, "\t{:dropped-bad-sid/%ju} "
 846             "{N:/bad SID}\n");
 847         p1a(sctps_nomem, "\t{:dropped-no-memory/%ju} "
 848             "{N:/no memory}\n");
 849         p1a(sctps_fastretransinrtt, "\t{:multiple-fast-retransmits-in-rtt/%ju} "
 850             "{N:/number of multiple FR in a RT}T window\n");
 851 #if 0
 852         p(sctps_markedretrans, "\t%ju TODO:sctps_markedretrans\n");
 853 #endif
 854         p1a(sctps_naglesent, "\t{:rfc813-sent/%ju} "
 855             "{N:/RFC813 allowed sending}\n");
 856         p1a(sctps_naglequeued, "\t{:rfc813-queued/%ju} "
 857             "{N:/RFC813 does not allow sending}\n");
 858         p1a(sctps_maxburstqueued, "\t{:max-burst-queued/%ju} "
 859             "{N:/times max burst prohibited sending}\n");
 860         p1a(sctps_ifnomemqueued, "\t{:no-memory-in-interface/%ju} "
 861             "{N:/look ahead tells us no memory in interface}\n");
 862         p(sctps_windowprobed, "\t{:sent-window-probes/%ju} "
 863             "{N:/number%s of window probes sent}\n");
 864         p(sctps_lowlevelerr, "\t{:low-level-err/%ju} "
 865             "{N:/time%s an output error to clamp down on next user send}\n");
 866         p(sctps_lowlevelerrusr, "\t{:low-level-user-error/%ju} "
 867             "{N:/time%s sctp_senderrors were caused from a user}\n");
 868         p(sctps_datadropchklmt, "\t{:dropped-chunk-limit/%ju} "
 869             "{N:/number of in data drop%s due to chunk limit reached}\n");
 870         p(sctps_datadroprwnd, "\t{:dropped-rwnd-limit/%ju} "
 871             "{N:/number of in data drop%s due to rwnd limit reached}\n");
 872         p(sctps_ecnereducedcwnd, "\t{:ecn-reduced-cwnd/%ju} "
 873             "{N:/time%s a ECN reduced the cwnd}\n");
 874         p1a(sctps_vtagexpress, "\t{:v-tag-express-lookup/%ju} "
 875             "{N:/used express lookup via vtag}\n");
 876         p1a(sctps_vtagbogus, "\t{:v-tag-collision/%ju} "
 877             "{N:/collision in express lookup}\n");
 878         p(sctps_primary_randry, "\t{:sender-ran-dry/%ju} "
 879             "{N:/time%s the sender ran dry of user data on primary}\n");
 880         p1a(sctps_cmt_randry, "\t{:cmt-ran-dry/%ju} "
 881             "{N:/same for above}\n");
 882         p(sctps_slowpath_sack, "\t{:slow-path-sack/%ju} "
 883             "{N:/sack%s the slow way}\n");
 884         p(sctps_wu_sacks_sent, "\t{:sent-window-update-only-sack/%ju} "
 885             "{N:/window update only sack%s sent}\n");
 886         p(sctps_sends_with_flags, "\t{:sent-with-sinfo/%ju} "
 887             "{N:/send%s with sinfo_flags !=0}\n");
 888         p(sctps_sends_with_unord, "\t{:sent-with-unordered/%ju} "
 889             "{N:/unordered send%s}\n");
 890         p(sctps_sends_with_eof, "\t{:sent-with-eof/%ju} "
 891             "{N:/send%s with EOF flag set}\n");
 892         p(sctps_sends_with_abort, "\t{:sent-with-abort/%ju} "
 893             "{N:/send%s with ABORT flag set}\n");
 894         p(sctps_protocol_drain_calls, "\t{:protocol-drain-called/%ju} "
 895             "{N:/time%s protocol drain called}\n");
 896         p(sctps_protocol_drains_done, "\t{:protocol-drain/%ju} "
 897             "{N:/time%s we did a protocol drain}\n");
 898         p(sctps_read_peeks, "\t{:read-with-peek/%ju} "
 899             "{N:/time%s recv was called with peek}\n");
 900         p(sctps_cached_chk, "\t{:cached-chunks/%ju} "
 901             "{N:/cached chunk%s used}\n");
 902         p1a(sctps_cached_strmoq, "\t{:cached-output-queue-used/%ju} "
 903             "{N:/cached stream oq's used}\n");
 904         p(sctps_left_abandon, "\t{:messages-abandoned/%ju} "
 905             "{N:/unread message%s abandonded by close}\n");
 906         p1a(sctps_send_burst_avoid, "\t{:send-burst-avoidance/%ju} "
 907             "{N:/send burst avoidance, already max burst inflight to net}\n");
 908         p1a(sctps_send_cwnd_avoid, "\t{:send-cwnd-avoidance/%ju} "
 909             "{N:/send cwnd full avoidance, already max burst inflight "
 910             "to net}\n");
 911         p(sctps_fwdtsn_map_over, "\t{:tsn-map-overruns/%ju} "
 912            "{N:/number of map array over-run%s via fwd-tsn's}\n");
 913
 914 #undef p
 915 #undef p1a
 916         xo_close_container(name);
 917 }
 918
 919 #endif /* SCTP */