sbin/ifconfig/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD: src/sbin/ifconfig/ifmedia.c,v 1.19.2.1 2006/03/01 22:24:23 glebius Exp $ */
   3 /* $DragonFly: src/sbin/ifconfig/ifmedia.c,v 1.10 2006/04/02 05:33:59 sephe Exp $ */
   4
   5 /*
   6  * Copyright (c) 1997 Jason R. Thorpe.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project
  20  *      by Jason R. Thorpe.
  21  * 4. The name of the author may not be used to endorse or promote products
  22  *    derived from this software without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  27  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  29  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  30  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  31  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  32  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * Copyright (c) 1983, 1993
  39  *      The Regents of the University of California.  All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *      This product includes software developed by the University of
  52  *      California, Berkeley and its contributors.
  53  * 4. Neither the name of the University nor the names of its contributors
  54  *    may be used to endorse or promote products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  */
  69
  70 #include <sys/param.h>
  71 #include <sys/ioctl.h>
  72 #include <sys/socket.h>
  73 #include <sys/sysctl.h>
  74 #include <sys/time.h>
  75
  76 #include <net/if.h>
  77 #include <net/if_dl.h>
  78 #include <net/if_types.h>
  79 #include <net/if_media.h>
  80 #include <net/route.h>
  81
  82 #include <ctype.h>
  83 #include <err.h>
  84 #include <errno.h>
  85 #include <fcntl.h>
  86 #include <stdio.h>
  87 #include <stdlib.h>
  88 #include <string.h>
  89 #include <unistd.h>
  90
  91 #include "ifconfig.h"
  92
  93 static void     domediaopt(const char *, int, int);
  94 static int      get_media_subtype(int, const char *);
  95 static int      get_media_mode(int, const char *);
  96 static int      get_media_options(int, const char *);
  97 static int      lookup_media_word(struct ifmedia_description *, const char *);
  98 static void     print_media_word(int, int);
  99 static void     print_media_word_ifconfig(int);
 100
 101 static struct ifmedia_description *get_toptype_desc(int);
 102 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
 103 static struct ifmedia_description *get_subtype_desc(int,
 104     struct ifmedia_type_to_subtype *ttos);
 105
 106 static void
 107 media_status(int s)
 108 {
 109         struct ifmediareq ifmr;
 110         int *media_list, i;
 111
 112         memset(&ifmr, 0, sizeof(ifmr));
 113         strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 114
 115         if (ioctl(s, SIOCGIFMEDIA, &ifmr) < 0) {
 116                 /*
 117                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 118                  */
 119                 return;
 120         }
 121
 122         if (ifmr.ifm_count == 0) {
 123                 warnx("%s: no media types?", name);
 124                 return;
 125         }
 126
 127         media_list = malloc(ifmr.ifm_count * sizeof(int));
 128         if (media_list == NULL)
 129                 err(1, "malloc");
 130         ifmr.ifm_ulist = media_list;
 131
 132         if (ioctl(s, SIOCGIFMEDIA, &ifmr) < 0)
 133                 err(1, "SIOCGIFMEDIA");
 134
 135         printf("\tmedia: ");
 136         print_media_word(ifmr.ifm_current, 1);
 137         if (ifmr.ifm_active != ifmr.ifm_current) {
 138                 putchar(' ');
 139                 putchar('(');
 140                 print_media_word(ifmr.ifm_active, 0);
 141                 putchar(')');
 142         }
 143
 144         putchar('\n');
 145
 146         if (ifmr.ifm_status & IFM_AVALID) {
 147                 printf("\tstatus: ");
 148                 switch (IFM_TYPE(ifmr.ifm_active)) {
 149                 case IFM_ETHER:
 150                         if (ifmr.ifm_status & IFM_ACTIVE)
 151                                 printf("active");
 152                         else
 153                                 printf("no carrier");
 154                         break;
 155
 156                 case IFM_FDDI:
 157                 case IFM_TOKEN:
 158                         if (ifmr.ifm_status & IFM_ACTIVE)
 159                                 printf("inserted");
 160                         else
 161                                 printf("no ring");
 162                         break;
 163
 164                 case IFM_ATM:
 165                         if (ifmr.ifm_status & IFM_ACTIVE)
 166                                 printf("active");
 167                         else
 168                                 printf("no carrier");
 169                         break;
 170
 171                 case IFM_IEEE80211:
 172                         /* XXX: Different value for adhoc? */
 173                         if (ifmr.ifm_status & IFM_ACTIVE)
 174                                 printf("associated");
 175                         else
 176                                 printf("no carrier");
 177                         break;
 178                 }
 179                 putchar('\n');
 180         }
 181
 182         if (ifmr.ifm_count > 0 && supmedia) {
 183                 printf("\tsupported media:\n");
 184                 for (i = 0; i < ifmr.ifm_count; i++) {
 185                         printf("\t\t");
 186                         print_media_word_ifconfig(media_list[i]);
 187                         putchar('\n');
 188                 }
 189         }
 190
 191         free(media_list);
 192 }
 193
 194 static struct ifmediareq *
 195 getifmediastate(int s)
 196 {
 197         static struct ifmediareq *ifmr = NULL;
 198         int *mwords;
 199
 200         if (ifmr == NULL) {
 201                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 202                 if (ifmr == NULL)
 203                         err(1, "malloc");
 204
 205                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 206                 (void) strncpy(ifmr->ifm_name, name,
 207                     sizeof(ifmr->ifm_name));
 208
 209                 ifmr->ifm_count = 0;
 210                 ifmr->ifm_ulist = NULL;
 211
 212                 /*
 213                  * We must go through the motions of reading all
 214                  * supported media because we need to know both
 215                  * the current media type and the top-level type.
 216                  */
 217
 218                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 219                         err(1, "SIOCGIFMEDIA");
 220                 }
 221
 222                 if (ifmr->ifm_count == 0)
 223                         errx(1, "%s: no media types?", name);
 224
 225                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 226                 if (mwords == NULL)
 227                         err(1, "malloc");
 228
 229                 ifmr->ifm_ulist = mwords;
 230                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 231                         err(1, "SIOCGIFMEDIA");
 232         }
 233
 234         return ifmr;
 235 }
 236
 237 static void
 238 setifmediacallback(int s, void *arg)
 239 {
 240         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 241         static int did_it = 0;
 242
 243         if (!did_it) {
 244                 ifr.ifr_media = ifmr->ifm_current;
 245                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 246                         err(1, "SIOCSIFMEDIA (media)");
 247                 free(ifmr->ifm_ulist);
 248                 free(ifmr);
 249                 did_it = 1;
 250         }
 251 }
 252
 253 static void
 254 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 255 {
 256         struct ifmediareq *ifmr;
 257         int subtype;
 258
 259
 260         ifmr = getifmediastate(s);
 261
 262         /*
 263          * We are primarily concerned with the top-level type.
 264          * However, "current" may be only IFM_NONE, so we just look
 265          * for the top-level type in the first "supported type"
 266          * entry.
 267          *
 268          * (I'm assuming that all supported media types for a given
 269          * interface will be the same top-level type..)
 270          */
 271         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 272
 273         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 274         ifr.ifr_media = (ifmr->ifm_current & ~(IFM_NMASK|IFM_TMASK)) |
 275             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 276
 277         if ((ifr.ifr_media & IFM_TMASK) == 0) {
 278                 ifr.ifr_media &= ~IFM_GMASK;
 279         }
 280
 281         ifmr->ifm_current = ifr.ifr_media;
 282         callback_register(setifmediacallback, (void *)ifmr);
 283 }
 284
 285 static void
 286 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 287 {
 288
 289         domediaopt(val, 0, s);
 290 }
 291
 292 static void
 293 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 294 {
 295
 296         domediaopt(val, 1, s);
 297 }
 298
 299 static void
 300 domediaopt(const char *val, int clear, int s)
 301 {
 302         struct ifmediareq *ifmr;
 303         int options;
 304
 305         ifmr = getifmediastate(s);
 306
 307         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 308
 309         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 310         ifr.ifr_media = ifmr->ifm_current;
 311         if (clear)
 312                 ifr.ifr_media &= ~options;
 313         else
 314                 ifr.ifr_media |= options;
 315
 316         ifmr->ifm_current = ifr.ifr_media;
 317         callback_register(setifmediacallback, (void *)ifmr);
 318 }
 319
 320
 321 static void
 322 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 323 {
 324         struct ifmediareq *ifmr;
 325         int mode;
 326
 327         ifmr = getifmediastate(s);
 328
 329         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 330
 331         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 332         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 333
 334         ifmr->ifm_current = ifr.ifr_media;
 335         callback_register(setifmediacallback, (void *)ifmr);
 336 }
 337
 338 /**********************************************************************
 339  * A good chunk of this is duplicated from sys/net/ifmedia.c
 340  **********************************************************************/
 341
 342 static struct ifmedia_description ifm_type_descriptions[] =
 343     IFM_TYPE_DESCRIPTIONS;
 344
 345 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 346     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 347
 348 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 349     IFM_SUBTYPE_ETHERNET_ALIASES;
 350
 351 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 352     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 353
 354 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 355     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 356
 357 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 358     IFM_SUBTYPE_TOKENRING_ALIASES;
 359
 360 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 361     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 362
 363 static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
 364     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
 365
 366 static struct ifmedia_description ifm_subtype_fddi_aliases[] =
 367     IFM_SUBTYPE_FDDI_ALIASES;
 368
 369 static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
 370     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
 371
 372 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 373     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 374
 375 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 376     IFM_SUBTYPE_IEEE80211_ALIASES;
 377
 378 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 379     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 380
 381 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 382     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 383
 384 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 385     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 386
 387 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 388     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 389
 390 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 391     IFM_SUBTYPE_ATM_ALIASES;
 392
 393 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 394     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 395
 396 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 397     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 398
 399 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 400     IFM_SUBTYPE_SHARED_ALIASES;
 401
 402 static struct ifmedia_description ifm_shared_option_descriptions[] =
 403     IFM_SHARED_OPTION_DESCRIPTIONS;
 404
 405 struct ifmedia_type_to_subtype {
 406         struct {
 407                 struct ifmedia_description *desc;
 408                 int alias;
 409         } subtypes[5];
 410         struct {
 411                 struct ifmedia_description *desc;
 412                 int alias;
 413         } options[3];
 414         struct {
 415                 struct ifmedia_description *desc;
 416                 int alias;
 417         } modes[3];
 418 };
 419
 420 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 421 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 422         {
 423                 {
 424                         { &ifm_subtype_shared_descriptions[0], 0 },
 425                         { &ifm_subtype_shared_aliases[0], 1 },
 426                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 427                         { &ifm_subtype_ethernet_aliases[0], 1 },
 428                         { NULL, 0 },
 429                 },
 430                 {
 431                         { &ifm_shared_option_descriptions[0], 0 },
 432                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 433                         { NULL, 0 },
 434                 },
 435                 {
 436                         { NULL, 0 },
 437                 },
 438         },
 439         {
 440                 {
 441                         { &ifm_subtype_shared_descriptions[0], 0 },
 442                         { &ifm_subtype_shared_aliases[0], 1 },
 443                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 444                         { &ifm_subtype_tokenring_aliases[0], 1 },
 445                         { NULL, 0 },
 446                 },
 447                 {
 448                         { &ifm_shared_option_descriptions[0], 0 },
 449                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 450                         { NULL, 0 },
 451                 },
 452                 {
 453                         { NULL, 0 },
 454                 },
 455         },
 456         {
 457                 {
 458                         { &ifm_subtype_shared_descriptions[0], 0 },
 459                         { &ifm_subtype_shared_aliases[0], 1 },
 460                         { &ifm_subtype_fddi_descriptions[0], 0 },
 461                         { &ifm_subtype_fddi_aliases[0], 1 },
 462                         { NULL, 0 },
 463                 },
 464                 {
 465                         { &ifm_shared_option_descriptions[0], 0 },
 466                         { &ifm_subtype_fddi_option_descriptions[0], 0 },
 467                         { NULL, 0 },
 468                 },
 469                 {
 470                         { NULL, 0 },
 471                 },
 472         },
 473         {
 474                 {
 475                         { &ifm_subtype_shared_descriptions[0], 0 },
 476                         { &ifm_subtype_shared_aliases[0], 1 },
 477                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 478                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 479                         { NULL, 0 },
 480                 },
 481                 {
 482                         { &ifm_shared_option_descriptions[0], 0 },
 483                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 484                         { NULL, 0 },
 485                 },
 486                 {
 487                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 488                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 489                         { NULL, 0 },
 490                 },
 491         },
 492         {
 493                 {
 494                         { &ifm_subtype_shared_descriptions[0], 0 },
 495                         { &ifm_subtype_shared_aliases[0], 1 },
 496                         { &ifm_subtype_atm_descriptions[0], 0 },
 497                         { &ifm_subtype_atm_aliases[0], 1 },
 498                         { NULL, 0 },
 499                 },
 500                 {
 501                         { &ifm_shared_option_descriptions[0], 0 },
 502                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 503                         { NULL, 0 },
 504                 },
 505                 {
 506                         { NULL, 0 },
 507                 },
 508         },
 509 };
 510
 511 static int
 512 get_media_subtype(int type, const char *val)
 513 {
 514         struct ifmedia_description *desc;
 515         struct ifmedia_type_to_subtype *ttos;
 516         int rval, i;
 517
 518         /* Find the top-level interface type. */
 519         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 520             desc->ifmt_string != NULL; desc++, ttos++)
 521                 if (type == desc->ifmt_word)
 522                         break;
 523         if (desc->ifmt_string == NULL)
 524                 errx(1, "unknown media type 0x%x", type);
 525
 526         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 527                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 528                 if (rval != -1)
 529                         return (rval);
 530         }
 531         errx(1, "unknown media subtype: %s", val);
 532         /*NOTREACHED*/
 533 }
 534
 535 static int
 536 get_media_mode(int type, const char *val)
 537 {
 538         struct ifmedia_description *desc;
 539         struct ifmedia_type_to_subtype *ttos;
 540         int rval, i;
 541
 542         /* Find the top-level interface type. */
 543         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 544             desc->ifmt_string != NULL; desc++, ttos++)
 545                 if (type == desc->ifmt_word)
 546                         break;
 547         if (desc->ifmt_string == NULL)
 548                 errx(1, "unknown media mode 0x%x", type);
 549
 550         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 551                 rval = lookup_media_word(ttos->modes[i].desc, val);
 552                 if (rval != -1)
 553                         return (rval);
 554         }
 555         return -1;
 556 }
 557
 558 static int
 559 get_media_options(int type, const char *val)
 560 {
 561         struct ifmedia_description *desc;
 562         struct ifmedia_type_to_subtype *ttos;
 563         char *optlist, *optptr;
 564         int option = 0, i, rval = 0;
 565
 566         /* We muck with the string, so copy it. */
 567         optlist = strdup(val);
 568         if (optlist == NULL)
 569                 err(1, "strdup");
 570
 571         /* Find the top-level interface type. */
 572         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 573             desc->ifmt_string != NULL; desc++, ttos++)
 574                 if (type == desc->ifmt_word)
 575                         break;
 576         if (desc->ifmt_string == NULL)
 577                 errx(1, "unknown media type 0x%x", type);
 578
 579         /*
 580          * Look up the options in the user-provided comma-separated
 581          * list.
 582          */
 583         optptr = optlist;
 584         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 585                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 586                         option = lookup_media_word(ttos->options[i].desc, optptr);
 587                         if (option != -1)
 588                                 break;
 589                 }
 590                 if (option == 0)
 591                         errx(1, "unknown option: %s", optptr);
 592                 rval |= option;
 593         }
 594
 595         free(optlist);
 596         return (rval);
 597 }
 598
 599 static int
 600 lookup_media_word(struct ifmedia_description *desc, const char *val)
 601 {
 602
 603         for (; desc->ifmt_string != NULL; desc++)
 604                 if (strcasecmp(desc->ifmt_string, val) == 0)
 605                         return (desc->ifmt_word);
 606
 607         return (-1);
 608 }
 609
 610 static struct ifmedia_description *get_toptype_desc(int ifmw)
 611 {
 612         struct ifmedia_description *desc;
 613
 614         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 615                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 616                         break;
 617
 618         return desc;
 619 }
 620
 621 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 622 {
 623         struct ifmedia_description *desc;
 624         struct ifmedia_type_to_subtype *ttos;
 625
 626         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 627             desc->ifmt_string != NULL; desc++, ttos++)
 628                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 629                         break;
 630
 631         return ttos;
 632 }
 633
 634 static struct ifmedia_description *get_subtype_desc(int ifmw,
 635     struct ifmedia_type_to_subtype *ttos)
 636 {
 637         int i;
 638         struct ifmedia_description *desc;
 639
 640         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 641                 if (ttos->subtypes[i].alias)
 642                         continue;
 643                 for (desc = ttos->subtypes[i].desc;
 644                     desc->ifmt_string != NULL; desc++) {
 645                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 646                                 return desc;
 647                 }
 648         }
 649
 650         return NULL;
 651 }
 652
 653 static struct ifmedia_description *get_mode_desc(int ifmw,
 654     struct ifmedia_type_to_subtype *ttos)
 655 {
 656         int i;
 657         struct ifmedia_description *desc;
 658
 659         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 660                 if (ttos->modes[i].alias)
 661                         continue;
 662                 for (desc = ttos->modes[i].desc;
 663                     desc->ifmt_string != NULL; desc++) {
 664                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 665                                 return desc;
 666                 }
 667         }
 668
 669         return NULL;
 670 }
 671
 672 static void
 673 print_media_word(int ifmw, int print_toptype)
 674 {
 675         struct ifmedia_description *desc;
 676         struct ifmedia_type_to_subtype *ttos;
 677         int seen_option = 0, i;
 678
 679         /* Find the top-level interface type. */
 680         desc = get_toptype_desc(ifmw);
 681         ttos = get_toptype_ttos(ifmw);
 682         if (desc->ifmt_string == NULL) {
 683                 printf("<unknown type>");
 684                 return;
 685         } else if (print_toptype) {
 686                 printf("%s", desc->ifmt_string);
 687         }
 688
 689         /*
 690          * Don't print the top-level type; it's not like we can
 691          * change it, or anything.
 692          */
 693
 694         /* Find subtype. */
 695         desc = get_subtype_desc(ifmw, ttos);
 696         if (desc != NULL)
 697                 goto got_subtype;
 698
 699         /* Falling to here means unknown subtype. */
 700         printf("<unknown subtype>");
 701         return;
 702
 703  got_subtype:
 704         if (print_toptype)
 705                 putchar(' ');
 706
 707         printf("%s", desc->ifmt_string);
 708
 709         if (print_toptype) {
 710                 desc = get_mode_desc(ifmw, ttos);
 711                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 712                         printf(" mode %s", desc->ifmt_string);
 713         }
 714
 715         /* Find options. */
 716         for (i = 0; ttos->options[i].desc != NULL; i++) {
 717                 if (ttos->options[i].alias)
 718                         continue;
 719                 for (desc = ttos->options[i].desc;
 720                     desc->ifmt_string != NULL; desc++) {
 721                         if (ifmw & desc->ifmt_word) {
 722                                 if (seen_option == 0)
 723                                         printf(" <");
 724                                 printf("%s%s", seen_option++ ? "," : "",
 725                                     desc->ifmt_string);
 726                         }
 727                 }
 728         }
 729         printf("%s", seen_option ? ">" : "");
 730 }
 731
 732 static void
 733 print_media_word_ifconfig(int ifmw)
 734 {
 735         struct ifmedia_description *desc;
 736         struct ifmedia_type_to_subtype *ttos;
 737         int i;
 738
 739         /* Find the top-level interface type. */
 740         desc = get_toptype_desc(ifmw);
 741         ttos = get_toptype_ttos(ifmw);
 742         if (desc->ifmt_string == NULL) {
 743                 printf("<unknown type>");
 744                 return;
 745         }
 746
 747         /*
 748          * Don't print the top-level type; it's not like we can
 749          * change it, or anything.
 750          */
 751
 752         /* Find subtype. */
 753         desc = get_subtype_desc(ifmw, ttos);
 754         if (desc != NULL)
 755                 goto got_subtype;
 756
 757         /* Falling to here means unknown subtype. */
 758         printf("<unknown subtype>");
 759         return;
 760
 761  got_subtype:
 762         printf("media %s", desc->ifmt_string);
 763
 764         desc = get_mode_desc(ifmw, ttos);
 765         if (desc != NULL)
 766                 printf(" mode %s", desc->ifmt_string);
 767
 768         /* Find options. */
 769         for (i = 0; ttos->options[i].desc != NULL; i++) {
 770                 if (ttos->options[i].alias)
 771                         continue;
 772                 for (desc = ttos->options[i].desc;
 773                     desc->ifmt_string != NULL; desc++) {
 774                         if (ifmw & desc->ifmt_word) {
 775                                 printf(" mediaopt %s", desc->ifmt_string);
 776                         }
 777                 }
 778         }
 779 }
 780
 781 /**********************************************************************
 782  * ...until here.
 783  **********************************************************************/
 784
 785 static struct cmd media_cmds[] = {
 786         DEF_CMD_ARG("media",    setmedia),
 787         DEF_CMD_ARG("mode",     setmediamode),
 788         DEF_CMD_ARG("mediaopt", setmediaopt),
 789         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 790 };
 791 static struct afswtch af_media = {
 792         .af_name        = "af_media",
 793         .af_af          = AF_UNSPEC,
 794         .af_other_status = media_status,
 795 };
 796
 797 static __constructor void
 798 ifmedia_ctor(void)
 799 {
 800 #define N(a)    (sizeof(a) / sizeof(a[0]))
 801         int i;
 802
 803         for (i = 0; i < N(media_cmds);  i++)
 804                 cmd_register(&media_cmds[i]);
 805         af_register(&af_media);
 806 #undef N
 807 }