sbin/ifconfig/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD$ */
   3
   4 /*-
   5  * SPDX-License-Identifier: BSD-4-Clause
   6  *
   7  * Copyright (c) 1997 Jason R. Thorpe.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed for the NetBSD Project
  21  *      by Jason R. Thorpe.
  22  * 4. The name of the author may not be used to endorse or promote products
  23  *    derived from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  26  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  30  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  31  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  32  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  33  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 /*
  39  * Copyright (c) 1983, 1993
  40  *      The Regents of the University of California.  All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  * 1. Redistributions of source code must retain the above copyright
  46  *    notice, this list of conditions and the following disclaimer.
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in the
  49  *    documentation and/or other materials provided with the distribution.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  */
  66
  67 #include <sys/param.h>
  68 #include <sys/ioctl.h>
  69 #include <sys/socket.h>
  70 #include <sys/sysctl.h>
  71 #include <sys/time.h>
  72
  73 #include <net/if.h>
  74 #include <net/if_dl.h>
  75 #include <net/if_types.h>
  76 #include <net/if_media.h>
  77 #include <net/route.h>
  78
  79 #include <ctype.h>
  80 #include <err.h>
  81 #include <errno.h>
  82 #include <fcntl.h>
  83 #include <stdbool.h>
  84 #include <stdio.h>
  85 #include <stdlib.h>
  86 #include <string.h>
  87 #include <unistd.h>
  88
  89 #include "ifconfig.h"
  90
  91 static void     domediaopt(const char *, int, int);
  92 static int      get_media_subtype(int, const char *);
  93 static int      get_media_mode(int, const char *);
  94 static int      get_media_options(int, const char *);
  95 static int      lookup_media_word(struct ifmedia_description *, const char *);
  96 static void     print_media_word(int, int);
  97 static void     print_media_word_ifconfig(int);
  98
  99 static struct ifmedia_description *get_toptype_desc(int);
 100 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
 101 static struct ifmedia_description *get_subtype_desc(int,
 102     struct ifmedia_type_to_subtype *ttos);
 103
 104 #define IFM_OPMODE(x) \
 105         ((x) & (IFM_IEEE80211_ADHOC | IFM_IEEE80211_HOSTAP | \
 106          IFM_IEEE80211_IBSS | IFM_IEEE80211_WDS | IFM_IEEE80211_MONITOR | \
 107          IFM_IEEE80211_MBSS))
 108 #define IFM_IEEE80211_STA       0
 109
 110 static void
 111 media_status(int s)
 112 {
 113         struct ifmediareq ifmr;
 114         struct ifdownreason ifdr;
 115         int *media_list, i;
 116         bool no_carrier, xmedia;
 117
 118         (void) memset(&ifmr, 0, sizeof(ifmr));
 119         (void) strlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 120         xmedia = true;
 121
 122         /*
 123          * Check if interface supports extended media types.
 124          */
 125         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 126                 xmedia = false;
 127         if (!xmedia && ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
 128                 /*
 129                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 130                  */
 131                 return;
 132         }
 133
 134         if (ifmr.ifm_count == 0) {
 135                 warnx("%s: no media types?", name);
 136                 return;
 137         }
 138
 139         media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
 140         if (media_list == NULL)
 141                 err(1, "malloc");
 142         ifmr.ifm_ulist = media_list;
 143
 144         if (xmedia) {
 145                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 146                         err(1, "SIOCGIFXMEDIA");
 147         } else {
 148                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
 149                         err(1, "SIOCGIFMEDIA");
 150         }
 151
 152         printf("\tmedia: ");
 153         print_media_word(ifmr.ifm_current, 1);
 154         if (ifmr.ifm_active != ifmr.ifm_current) {
 155                 putchar(' ');
 156                 putchar('(');
 157                 print_media_word(ifmr.ifm_active, 0);
 158                 putchar(')');
 159         }
 160
 161         putchar('\n');
 162
 163         if (ifmr.ifm_status & IFM_AVALID) {
 164                 no_carrier = false;
 165                 printf("\tstatus: ");
 166                 switch (IFM_TYPE(ifmr.ifm_active)) {
 167                 case IFM_ETHER:
 168                 case IFM_ATM:
 169                         if (ifmr.ifm_status & IFM_ACTIVE)
 170                                 printf("active");
 171                         else
 172                                 no_carrier = true;
 173                         break;
 174
 175                 case IFM_IEEE80211:
 176                         if (ifmr.ifm_status & IFM_ACTIVE) {
 177                                 /* NB: only sta mode associates */
 178                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 179                                         printf("associated");
 180                                 else
 181                                         printf("running");
 182                         } else
 183                                 no_carrier = true;
 184                         break;
 185                 }
 186                 if (no_carrier) {
 187                         printf("no carrier");
 188                         memset(&ifdr, 0, sizeof(ifdr));
 189                         strlcpy(ifdr.ifdr_name, name, sizeof(ifdr.ifdr_name));
 190                         if (ioctl(s, SIOCGIFDOWNREASON, (caddr_t)&ifdr) == 0) {
 191                                 switch (ifdr.ifdr_reason) {
 192                                 case IFDR_REASON_MSG:
 193                                         printf(" (%s)", ifdr.ifdr_msg);
 194                                         break;
 195                                 case IFDR_REASON_VENDOR:
 196                                         printf(" (vendor code %d)",
 197                                             ifdr.ifdr_vendor);
 198                                         break;
 199                                 default:
 200                                         break;
 201                                 }
 202                         }
 203                 }
 204                 putchar('\n');
 205         }
 206
 207         if (ifmr.ifm_count > 0 && supmedia) {
 208                 printf("\tsupported media:\n");
 209                 for (i = 0; i < ifmr.ifm_count; i++) {
 210                         printf("\t\t");
 211                         print_media_word_ifconfig(media_list[i]);
 212                         putchar('\n');
 213                 }
 214         }
 215
 216         free(media_list);
 217 }
 218
 219 struct ifmediareq *
 220 ifmedia_getstate(int s)
 221 {
 222         static struct ifmediareq *ifmr = NULL;
 223         int *mwords;
 224         int xmedia = 1;
 225
 226         if (ifmr == NULL) {
 227                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 228                 if (ifmr == NULL)
 229                         err(1, "malloc");
 230
 231                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 232                 (void) strlcpy(ifmr->ifm_name, name,
 233                     sizeof(ifmr->ifm_name));
 234
 235                 ifmr->ifm_count = 0;
 236                 ifmr->ifm_ulist = NULL;
 237
 238                 /*
 239                  * We must go through the motions of reading all
 240                  * supported media because we need to know both
 241                  * the current media type and the top-level type.
 242                  */
 243
 244                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0) {
 245                         xmedia = 0;
 246                 }
 247                 if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 248                         err(1, "SIOCGIFMEDIA");
 249                 }
 250
 251                 if (ifmr->ifm_count == 0)
 252                         errx(1, "%s: no media types?", name);
 253
 254                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 255                 if (mwords == NULL)
 256                         err(1, "malloc");
 257
 258                 ifmr->ifm_ulist = mwords;
 259                 if (xmedia) {
 260                         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0)
 261                                 err(1, "SIOCGIFXMEDIA");
 262                 } else {
 263                         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 264                                 err(1, "SIOCGIFMEDIA");
 265                 }
 266         }
 267
 268         return ifmr;
 269 }
 270
 271 static void
 272 setifmediacallback(int s, void *arg)
 273 {
 274         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 275         static int did_it = 0;
 276
 277         if (!did_it) {
 278                 ifr.ifr_media = ifmr->ifm_current;
 279                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 280                         err(1, "SIOCSIFMEDIA (media)");
 281                 free(ifmr->ifm_ulist);
 282                 free(ifmr);
 283                 did_it = 1;
 284         }
 285 }
 286
 287 static void
 288 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 289 {
 290         struct ifmediareq *ifmr;
 291         int subtype;
 292
 293         ifmr = ifmedia_getstate(s);
 294
 295         /*
 296          * We are primarily concerned with the top-level type.
 297          * However, "current" may be only IFM_NONE, so we just look
 298          * for the top-level type in the first "supported type"
 299          * entry.
 300          *
 301          * (I'm assuming that all supported media types for a given
 302          * interface will be the same top-level type..)
 303          */
 304         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 305
 306         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 307         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 308             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 309
 310         ifmr->ifm_current = ifr.ifr_media;
 311         callback_register(setifmediacallback, (void *)ifmr);
 312 }
 313
 314 static void
 315 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 316 {
 317
 318         domediaopt(val, 0, s);
 319 }
 320
 321 static void
 322 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 323 {
 324
 325         domediaopt(val, 1, s);
 326 }
 327
 328 static void
 329 domediaopt(const char *val, int clear, int s)
 330 {
 331         struct ifmediareq *ifmr;
 332         int options;
 333
 334         ifmr = ifmedia_getstate(s);
 335
 336         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 337
 338         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 339         ifr.ifr_media = ifmr->ifm_current;
 340         if (clear)
 341                 ifr.ifr_media &= ~options;
 342         else {
 343                 if (options & IFM_HDX) {
 344                         ifr.ifr_media &= ~IFM_FDX;
 345                         options &= ~IFM_HDX;
 346                 }
 347                 ifr.ifr_media |= options;
 348         }
 349         ifmr->ifm_current = ifr.ifr_media;
 350         callback_register(setifmediacallback, (void *)ifmr);
 351 }
 352
 353 static void
 354 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 355 {
 356         struct ifmediareq *ifmr;
 357         int inst;
 358
 359         ifmr = ifmedia_getstate(s);
 360
 361         inst = atoi(val);
 362         if (inst < 0 || inst > (int)IFM_INST_MAX)
 363                 errx(1, "invalid media instance: %s", val);
 364
 365         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 366         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 367
 368         ifmr->ifm_current = ifr.ifr_media;
 369         callback_register(setifmediacallback, (void *)ifmr);
 370 }
 371
 372 static void
 373 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 374 {
 375         struct ifmediareq *ifmr;
 376         int mode;
 377
 378         ifmr = ifmedia_getstate(s);
 379
 380         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 381
 382         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 383         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 384
 385         ifmr->ifm_current = ifr.ifr_media;
 386         callback_register(setifmediacallback, (void *)ifmr);
 387 }
 388
 389 /**********************************************************************
 390  * A good chunk of this is duplicated from sys/net/if_media.c
 391  **********************************************************************/
 392
 393 static struct ifmedia_description ifm_type_descriptions[] =
 394     IFM_TYPE_DESCRIPTIONS;
 395
 396 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 397     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 398
 399 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 400     IFM_SUBTYPE_ETHERNET_ALIASES;
 401
 402 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 403     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 404
 405 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 406     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 407
 408 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 409     IFM_SUBTYPE_IEEE80211_ALIASES;
 410
 411 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 412     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 413
 414 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 415     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 416
 417 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 418     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 419
 420 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 421     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 422
 423 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 424     IFM_SUBTYPE_ATM_ALIASES;
 425
 426 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 427     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 428
 429 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 430     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 431
 432 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 433     IFM_SUBTYPE_SHARED_ALIASES;
 434
 435 static struct ifmedia_description ifm_shared_option_descriptions[] =
 436     IFM_SHARED_OPTION_DESCRIPTIONS;
 437
 438 static struct ifmedia_description ifm_shared_option_aliases[] =
 439     IFM_SHARED_OPTION_ALIASES;
 440
 441 struct ifmedia_type_to_subtype {
 442         struct {
 443                 struct ifmedia_description *desc;
 444                 int alias;
 445         } subtypes[5];
 446         struct {
 447                 struct ifmedia_description *desc;
 448                 int alias;
 449         } options[4];
 450         struct {
 451                 struct ifmedia_description *desc;
 452                 int alias;
 453         } modes[3];
 454 };
 455
 456 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 457 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 458         {
 459                 {
 460                         { &ifm_subtype_shared_descriptions[0], 0 },
 461                         { &ifm_subtype_shared_aliases[0], 1 },
 462                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 463                         { &ifm_subtype_ethernet_aliases[0], 1 },
 464                         { NULL, 0 },
 465                 },
 466                 {
 467                         { &ifm_shared_option_descriptions[0], 0 },
 468                         { &ifm_shared_option_aliases[0], 1 },
 469                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 470                         { NULL, 0 },
 471                 },
 472                 {
 473                         { NULL, 0 },
 474                 },
 475         },
 476         {
 477                 {
 478                         { &ifm_subtype_shared_descriptions[0], 0 },
 479                         { &ifm_subtype_shared_aliases[0], 1 },
 480                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 481                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 482                         { NULL, 0 },
 483                 },
 484                 {
 485                         { &ifm_shared_option_descriptions[0], 0 },
 486                         { &ifm_shared_option_aliases[0], 1 },
 487                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 488                         { NULL, 0 },
 489                 },
 490                 {
 491                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 492                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 493                         { NULL, 0 },
 494                 },
 495         },
 496         {
 497                 {
 498                         { &ifm_subtype_shared_descriptions[0], 0 },
 499                         { &ifm_subtype_shared_aliases[0], 1 },
 500                         { &ifm_subtype_atm_descriptions[0], 0 },
 501                         { &ifm_subtype_atm_aliases[0], 1 },
 502                         { NULL, 0 },
 503                 },
 504                 {
 505                         { &ifm_shared_option_descriptions[0], 0 },
 506                         { &ifm_shared_option_aliases[0], 1 },
 507                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 508                         { NULL, 0 },
 509                 },
 510                 {
 511                         { NULL, 0 },
 512                 },
 513         },
 514 };
 515
 516 static int
 517 get_media_subtype(int type, const char *val)
 518 {
 519         struct ifmedia_description *desc;
 520         struct ifmedia_type_to_subtype *ttos;
 521         int rval, i;
 522
 523         /* Find the top-level interface type. */
 524         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 525             desc->ifmt_string != NULL; desc++, ttos++)
 526                 if (type == desc->ifmt_word)
 527                         break;
 528         if (desc->ifmt_string == NULL)
 529                 errx(1, "unknown media type 0x%x", type);
 530
 531         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 532                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 533                 if (rval != -1)
 534                         return (rval);
 535         }
 536         errx(1, "unknown media subtype: %s", val);
 537         /*NOTREACHED*/
 538 }
 539
 540 static int
 541 get_media_mode(int type, const char *val)
 542 {
 543         struct ifmedia_description *desc;
 544         struct ifmedia_type_to_subtype *ttos;
 545         int rval, i;
 546
 547         /* Find the top-level interface type. */
 548         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 549             desc->ifmt_string != NULL; desc++, ttos++)
 550                 if (type == desc->ifmt_word)
 551                         break;
 552         if (desc->ifmt_string == NULL)
 553                 errx(1, "unknown media mode 0x%x", type);
 554
 555         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 556                 rval = lookup_media_word(ttos->modes[i].desc, val);
 557                 if (rval != -1)
 558                         return (rval);
 559         }
 560         return -1;
 561 }
 562
 563 static int
 564 get_media_options(int type, const char *val)
 565 {
 566         struct ifmedia_description *desc;
 567         struct ifmedia_type_to_subtype *ttos;
 568         char *optlist, *optptr;
 569         int option, i, rval = 0;
 570
 571         /* We muck with the string, so copy it. */
 572         optlist = strdup(val);
 573         if (optlist == NULL)
 574                 err(1, "strdup");
 575
 576         /* Find the top-level interface type. */
 577         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 578             desc->ifmt_string != NULL; desc++, ttos++)
 579                 if (type == desc->ifmt_word)
 580                         break;
 581         if (desc->ifmt_string == NULL)
 582                 errx(1, "unknown media type 0x%x", type);
 583
 584         /*
 585          * Look up the options in the user-provided comma-separated
 586          * list.
 587          */
 588         optptr = optlist;
 589         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 590                 option = -1;
 591                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 592                         option = lookup_media_word(ttos->options[i].desc, optptr);
 593                         if (option != -1)
 594                                 break;
 595                 }
 596                 if (option == -1)
 597                         errx(1, "unknown option: %s", optptr);
 598                 rval |= option;
 599         }
 600
 601         free(optlist);
 602         return (rval);
 603 }
 604
 605 static int
 606 lookup_media_word(struct ifmedia_description *desc, const char *val)
 607 {
 608
 609         for (; desc->ifmt_string != NULL; desc++)
 610                 if (strcasecmp(desc->ifmt_string, val) == 0)
 611                         return (desc->ifmt_word);
 612
 613         return (-1);
 614 }
 615
 616 static struct ifmedia_description *get_toptype_desc(int ifmw)
 617 {
 618         struct ifmedia_description *desc;
 619
 620         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 621                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 622                         break;
 623
 624         return desc;
 625 }
 626
 627 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 628 {
 629         struct ifmedia_description *desc;
 630         struct ifmedia_type_to_subtype *ttos;
 631
 632         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 633             desc->ifmt_string != NULL; desc++, ttos++)
 634                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 635                         break;
 636
 637         return ttos;
 638 }
 639
 640 static struct ifmedia_description *get_subtype_desc(int ifmw,
 641     struct ifmedia_type_to_subtype *ttos)
 642 {
 643         int i;
 644         struct ifmedia_description *desc;
 645
 646         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 647                 if (ttos->subtypes[i].alias)
 648                         continue;
 649                 for (desc = ttos->subtypes[i].desc;
 650                     desc->ifmt_string != NULL; desc++) {
 651                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 652                                 return desc;
 653                 }
 654         }
 655
 656         return NULL;
 657 }
 658
 659 static struct ifmedia_description *get_mode_desc(int ifmw,
 660     struct ifmedia_type_to_subtype *ttos)
 661 {
 662         int i;
 663         struct ifmedia_description *desc;
 664
 665         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 666                 if (ttos->modes[i].alias)
 667                         continue;
 668                 for (desc = ttos->modes[i].desc;
 669                     desc->ifmt_string != NULL; desc++) {
 670                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 671                                 return desc;
 672                 }
 673         }
 674
 675         return NULL;
 676 }
 677
 678 static void
 679 print_media_word(int ifmw, int print_toptype)
 680 {
 681         struct ifmedia_description *desc;
 682         struct ifmedia_type_to_subtype *ttos;
 683         int seen_option = 0, i;
 684
 685         /* Find the top-level interface type. */
 686         desc = get_toptype_desc(ifmw);
 687         ttos = get_toptype_ttos(ifmw);
 688         if (desc->ifmt_string == NULL) {
 689                 printf("<unknown type>");
 690                 return;
 691         } else if (print_toptype) {
 692                 printf("%s", desc->ifmt_string);
 693         }
 694
 695         /*
 696          * Don't print the top-level type; it's not like we can
 697          * change it, or anything.
 698          */
 699
 700         /* Find subtype. */
 701         desc = get_subtype_desc(ifmw, ttos);
 702         if (desc == NULL) {
 703                 printf("<unknown subtype>");
 704                 return;
 705         }
 706
 707         if (print_toptype)
 708                 putchar(' ');
 709
 710         printf("%s", desc->ifmt_string);
 711
 712         if (print_toptype) {
 713                 desc = get_mode_desc(ifmw, ttos);
 714                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 715                         printf(" mode %s", desc->ifmt_string);
 716         }
 717
 718         /* Find options. */
 719         for (i = 0; ttos->options[i].desc != NULL; i++) {
 720                 if (ttos->options[i].alias)
 721                         continue;
 722                 for (desc = ttos->options[i].desc;
 723                     desc->ifmt_string != NULL; desc++) {
 724                         if (ifmw & desc->ifmt_word) {
 725                                 if (seen_option == 0)
 726                                         printf(" <");
 727                                 printf("%s%s", seen_option++ ? "," : "",
 728                                     desc->ifmt_string);
 729                         }
 730                 }
 731         }
 732         printf("%s", seen_option ? ">" : "");
 733
 734         if (print_toptype && IFM_INST(ifmw) != 0)
 735                 printf(" instance %d", IFM_INST(ifmw));
 736 }
 737
 738 static void
 739 print_media_word_ifconfig(int ifmw)
 740 {
 741         struct ifmedia_description *desc;
 742         struct ifmedia_type_to_subtype *ttos;
 743         int seen_option = 0, i;
 744
 745         /* Find the top-level interface type. */
 746         desc = get_toptype_desc(ifmw);
 747         ttos = get_toptype_ttos(ifmw);
 748         if (desc->ifmt_string == NULL) {
 749                 printf("<unknown type>");
 750                 return;
 751         }
 752
 753         /*
 754          * Don't print the top-level type; it's not like we can
 755          * change it, or anything.
 756          */
 757
 758         /* Find subtype. */
 759         desc = get_subtype_desc(ifmw, ttos);
 760         if (desc == NULL) {
 761                 printf("<unknown subtype>");
 762                 return;
 763         }
 764
 765         printf("media %s", desc->ifmt_string);
 766
 767         desc = get_mode_desc(ifmw, ttos);
 768         if (desc != NULL)
 769                 printf(" mode %s", desc->ifmt_string);
 770
 771         /* Find options. */
 772         for (i = 0; ttos->options[i].desc != NULL; i++) {
 773                 if (ttos->options[i].alias)
 774                         continue;
 775                 for (desc = ttos->options[i].desc;
 776                     desc->ifmt_string != NULL; desc++) {
 777                         if (ifmw & desc->ifmt_word) {
 778                                 if (seen_option == 0)
 779                                         printf(" mediaopt ");
 780                                 printf("%s%s", seen_option++ ? "," : "",
 781                                     desc->ifmt_string);
 782                         }
 783                 }
 784         }
 785
 786         if (IFM_INST(ifmw) != 0)
 787                 printf(" instance %d", IFM_INST(ifmw));
 788 }
 789
 790 /**********************************************************************
 791  * ...until here.
 792  **********************************************************************/
 793
 794 static struct cmd media_cmds[] = {
 795         DEF_CMD_ARG("media",    setmedia),
 796         DEF_CMD_ARG("mode",     setmediamode),
 797         DEF_CMD_ARG("mediaopt", setmediaopt),
 798         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 799         DEF_CMD_ARG("inst",     setmediainst),
 800         DEF_CMD_ARG("instance", setmediainst),
 801 };
 802 static struct afswtch af_media = {
 803         .af_name        = "af_media",
 804         .af_af          = AF_UNSPEC,
 805         .af_other_status = media_status,
 806 };
 807
 808 static __constructor void
 809 ifmedia_ctor(void)
 810 {
 811         size_t i;
 812
 813         for (i = 0; i < nitems(media_cmds);  i++)
 814                 cmd_register(&media_cmds[i]);
 815         af_register(&af_media);
 816 }