ifconfig.tproj/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 1.25.6.1 2008/11/25 02:59:29 kensmith Exp $ */
   3
   4 /*
   5  * Copyright (c) 1997 Jason R. Thorpe.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed for the NetBSD Project
  19  *      by Jason R. Thorpe.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /*
  37  * Copyright (c) 1983, 1993
  38  *      The Regents of the University of California.  All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  * 3. All advertising materials mentioning features or use of this software
  49  *    must display the following acknowledgement:
  50  *      This product includes software developed by the University of
  51  *      California, Berkeley and its contributors.
  52  * 4. Neither the name of the University nor the names of its contributors
  53  *    may be used to endorse or promote products derived from this software
  54  *    without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  57  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  58  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  59  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  60  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  61  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  62  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  63  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  64  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  65  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  66  * SUCH DAMAGE.
  67  */
  68
  69 #include <sys/param.h>
  70 #include <sys/ioctl.h>
  71 #include <sys/socket.h>
  72 #include <sys/sysctl.h>
  73 #include <sys/time.h>
  74
  75 #include <net/if.h>
  76 #include <net/if_dl.h>
  77 #include <net/if_types.h>
  78 #include <net/if_media.h>
  79 #include <net/route.h>
  80
  81 #include <ctype.h>
  82 #include <err.h>
  83 #include <errno.h>
  84 #include <fcntl.h>
  85 #include <stdio.h>
  86 #include <stdlib.h>
  87 #include <string.h>
  88 #include <unistd.h>
  89
  90 #include "ifconfig.h"
  91
  92 static void     domediaopt(const char *, int, int);
  93 static int      get_media_subtype(int, const char *);
  94 #ifdef notdef
  95 static int      get_media_mode(int, const char *);
  96 #endif
  97 static int      get_media_options(int, const char *);
  98 static int      lookup_media_word(struct ifmedia_description *, const char *);
  99 static void     print_media_word(int, int);
 100 static void     print_media_word_ifconfig(int);
 101
 102 static struct ifmedia_description *get_toptype_desc(int);
 103 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
 104 static struct ifmedia_description *get_subtype_desc(int,
 105     struct ifmedia_type_to_subtype *ttos);
 106
 107 static void
 108 media_status(int s)
 109 {
 110         struct ifmediareq ifmr;
 111         int *media_list, i;
 112
 113         (void) memset(&ifmr, 0, sizeof(ifmr));
 114         (void) strlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 115
 116         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0) {
 117                 /*
 118                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 119                  */
 120                 return;
 121         }
 122
 123         if (ifmr.ifm_count == 0) {
 124                 warnx("%s: no media types?", name);
 125                 return;
 126         }
 127
 128         media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
 129         if (media_list == NULL)
 130                 err(1, "malloc");
 131         ifmr.ifm_ulist = media_list;
 132
 133         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 134                 err(1, "SIOCGIFXMEDIA");
 135
 136         printf("\tmedia: ");
 137         print_media_word(ifmr.ifm_current, 1);
 138         if (ifmr.ifm_active != ifmr.ifm_current) {
 139                 putchar(' ');
 140                 putchar('(');
 141                 print_media_word(ifmr.ifm_active, 0);
 142                 putchar(')');
 143         }
 144
 145         putchar('\n');
 146
 147         if (ifmr.ifm_status & IFM_AVALID) {
 148                 printf("\tstatus: ");
 149 #ifdef notdef
 150                 switch (IFM_TYPE(ifmr.ifm_active)) {
 151                 case IFM_ETHER:
 152                         case IFM_ATM:
 153                         if (ifmr.ifm_status & IFM_ACTIVE)
 154                                 printf("active");
 155                         else
 156                                 printf("no carrier");
 157                         break;
 158
 159                 case IFM_FDDI:
 160                 case IFM_TOKEN:
 161                         if (ifmr.ifm_status & IFM_ACTIVE)
 162                                 printf("inserted");
 163                         else
 164                                 printf("no ring");
 165                         break;
 166
 167                 case IFM_IEEE80211:
 168                         /* XXX: Different value for adhoc? */
 169                         if (ifmr.ifm_status & IFM_ACTIVE)
 170                                 printf("associated");
 171                         else
 172                                 printf("no carrier");
 173                         break;
 174                 }
 175 #else
 176                 if (ifmr.ifm_status & IFM_ACTIVE)
 177                     printf("active");
 178                 else
 179                     printf("inactive");
 180 #endif
 181                 putchar('\n');
 182         }
 183
 184         if (ifmr.ifm_count > 0 && supmedia) {
 185                 printf("\tsupported media:\n");
 186                 for (i = 0; i < ifmr.ifm_count; i++) {
 187                         printf("\t\t");
 188                         print_media_word_ifconfig(media_list[i]);
 189                         putchar('\n');
 190                 }
 191         }
 192
 193         free(media_list);
 194 }
 195
 196 struct ifmediareq *
 197 ifmedia_getstate(int s)
 198 {
 199         static struct ifmediareq *ifmr = NULL;
 200         int *mwords;
 201
 202         if (ifmr == NULL) {
 203                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 204                 if (ifmr == NULL)
 205                         err(1, "malloc");
 206
 207                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 208                 (void) strlcpy(ifmr->ifm_name, name,
 209                     sizeof(ifmr->ifm_name));
 210
 211                 ifmr->ifm_count = 0;
 212                 ifmr->ifm_ulist = NULL;
 213
 214                 /*
 215                  * We must go through the motions of reading all
 216                  * supported media because we need to know both
 217                  * the current media type and the top-level type.
 218                  */
 219
 220                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0) {
 221                         err(1, "SIOCGIFXMEDIA");
 222                 }
 223
 224                 if (ifmr->ifm_count == 0)
 225                         errx(1, "%s: no media types?", name);
 226
 227                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 228                 if (mwords == NULL)
 229                         err(1, "malloc");
 230
 231                 ifmr->ifm_ulist = mwords;
 232                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0)
 233                         err(1, "SIOCGIFXMEDIA");
 234         }
 235
 236         return ifmr;
 237 }
 238
 239 static void
 240 setifmediacallback(int s, void *arg)
 241 {
 242         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 243         static int did_it = 0;
 244
 245         if (!did_it) {
 246                 ifr.ifr_media = ifmr->ifm_current;
 247                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 248                         err(1, "SIOCSIFMEDIA (media)");
 249                 free(ifmr->ifm_ulist);
 250                 free(ifmr);
 251                 did_it = 1;
 252         }
 253 }
 254
 255 static void
 256 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 257 {
 258         struct ifmediareq *ifmr;
 259         int subtype;
 260
 261         ifmr = ifmedia_getstate(s);
 262
 263         /*
 264          * We are primarily concerned with the top-level type.
 265          * However, "current" may be only IFM_NONE, so we just look
 266          * for the top-level type in the first "supported type"
 267          * entry.
 268          *
 269          * (I'm assuming that all supported media types for a given
 270          * interface will be the same top-level type..)
 271          */
 272         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 273
 274         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 275         ifr.ifr_media = (ifmr->ifm_current & ~(IFM_NMASK|IFM_TMASK)) |
 276             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 277
 278         if ((ifr.ifr_media & IFM_TMASK) == 0) {
 279                 ifr.ifr_media &= ~IFM_GMASK;
 280         }
 281
 282         ifmr->ifm_current = ifr.ifr_media;
 283         callback_register(setifmediacallback, (void *)ifmr);
 284 }
 285
 286 static void
 287 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 288 {
 289
 290         domediaopt(val, 0, s);
 291 }
 292
 293 static void
 294 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 295 {
 296
 297         domediaopt(val, 1, s);
 298 }
 299
 300 static void
 301 domediaopt(const char *val, int clear, int s)
 302 {
 303         struct ifmediareq *ifmr;
 304         int options;
 305
 306         ifmr = ifmedia_getstate(s);
 307
 308         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 309
 310         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 311         ifr.ifr_media = ifmr->ifm_current;
 312         if (clear)
 313                 ifr.ifr_media &= ~options;
 314         else {
 315                 if (options & IFM_HDX) {
 316                         ifr.ifr_media &= ~IFM_FDX;
 317                         options &= ~IFM_HDX;
 318                 }
 319                 ifr.ifr_media |= options;
 320         }
 321         ifmr->ifm_current = ifr.ifr_media;
 322         callback_register(setifmediacallback, (void *)ifmr);
 323 }
 324
 325 static void
 326 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 327 {
 328         struct ifmediareq *ifmr;
 329         int inst;
 330
 331         ifmr = ifmedia_getstate(s);
 332
 333         inst = atoi(val);
 334         if (inst < 0 || inst > IFM_INST_MAX)
 335                 errx(1, "invalid media instance: %s", val);
 336
 337         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 338         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 339
 340         ifmr->ifm_current = ifr.ifr_media;
 341         callback_register(setifmediacallback, (void *)ifmr);
 342 }
 343
 344 #ifdef notdef
 345 static void
 346 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 347 {
 348         struct ifmediareq *ifmr;
 349         int mode;
 350
 351         ifmr = ifmedia_getstate(s);
 352
 353         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 354
 355         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 356         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 357
 358         ifmr->ifm_current = ifr.ifr_media;
 359         callback_register(setifmediacallback, (void *)ifmr);
 360 }
 361 #endif
 362
 363 /**********************************************************************
 364  * A good chunk of this is duplicated from sys/net/ifmedia.c
 365  **********************************************************************/
 366
 367 static struct ifmedia_description ifm_type_descriptions[] =
 368     IFM_TYPE_DESCRIPTIONS;
 369
 370 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 371     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 372
 373 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 374     IFM_SUBTYPE_ETHERNET_ALIASES;
 375
 376 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 377     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 378
 379 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 380     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 381
 382 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 383     IFM_SUBTYPE_TOKENRING_ALIASES;
 384
 385 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 386     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 387
 388 static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
 389     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
 390
 391 static struct ifmedia_description ifm_subtype_fddi_aliases[] =
 392     IFM_SUBTYPE_FDDI_ALIASES;
 393
 394 static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
 395     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
 396
 397 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 398     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 399
 400 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 401     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 402
 403 #ifdef notdef
 404 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 405 IFM_SUBTYPE_IEEE80211_ALIASES;
 406
 407 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 408     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 409
 410 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 411     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 412
 413 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 414     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 415
 416 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 417     IFM_SUBTYPE_ATM_ALIASES;
 418
 419 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 420     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 421 #endif
 422
 423 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 424     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 425
 426 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 427     IFM_SUBTYPE_SHARED_ALIASES;
 428
 429 static struct ifmedia_description ifm_shared_option_descriptions[] =
 430     IFM_SHARED_OPTION_DESCRIPTIONS;
 431
 432 struct ifmedia_type_to_subtype {
 433         struct {
 434                 struct ifmedia_description *desc;
 435                 int alias;
 436         } subtypes[5];
 437         struct {
 438                 struct ifmedia_description *desc;
 439                 int alias;
 440         } options[3];
 441         struct {
 442                 struct ifmedia_description *desc;
 443                 int alias;
 444         } modes[3];
 445 };
 446
 447 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 448 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 449         {
 450                 {
 451                         { &ifm_subtype_shared_descriptions[0], 0 },
 452                         { &ifm_subtype_shared_aliases[0], 1 },
 453                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 454                         { &ifm_subtype_ethernet_aliases[0], 1 },
 455                         { NULL, 0 },
 456                 },
 457                 {
 458                         { &ifm_shared_option_descriptions[0], 0 },
 459                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 460                         { NULL, 0 },
 461                 },
 462                 {
 463                         { NULL, 0 },
 464                 },
 465         },
 466         {
 467                 {
 468                         { &ifm_subtype_shared_descriptions[0], 0 },
 469                         { &ifm_subtype_shared_aliases[0], 1 },
 470                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 471                         { &ifm_subtype_tokenring_aliases[0], 1 },
 472                         { NULL, 0 },
 473                 },
 474                 {
 475                         { &ifm_shared_option_descriptions[0], 0 },
 476                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 477                         { NULL, 0 },
 478                 },
 479                 {
 480                         { NULL, 0 },
 481                 },
 482         },
 483         {
 484                 {
 485                         { &ifm_subtype_shared_descriptions[0], 0 },
 486                         { &ifm_subtype_shared_aliases[0], 1 },
 487                         { &ifm_subtype_fddi_descriptions[0], 0 },
 488                         { &ifm_subtype_fddi_aliases[0], 1 },
 489                         { NULL, 0 },
 490                 },
 491                 {
 492                         { &ifm_shared_option_descriptions[0], 0 },
 493                         { &ifm_subtype_fddi_option_descriptions[0], 0 },
 494                         { NULL, 0 },
 495                 },
 496                 {
 497                         { NULL, 0 },
 498                 },
 499         },
 500 #ifdef __APPLE__
 501         {
 502                 {
 503                         { &ifm_subtype_shared_descriptions[0], 0 },
 504                         { &ifm_subtype_shared_aliases[0], 1 },
 505                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 506                         { NULL, 0 },
 507                 },
 508                 {
 509                         { &ifm_shared_option_descriptions[0], 0 },
 510                         { &ifm_subtype_ieee80211_option_descriptions[0], 1 },
 511                         { NULL, 0 },
 512                 },
 513                 {
 514                         { NULL, 0 },
 515                 },
 516         },
 517 #else /* __APPLE__ */
 518 #ifdef notdef
 519         {
 520                 {
 521                         { &ifm_subtype_shared_descriptions[0], 0 },
 522                         { &ifm_subtype_shared_aliases[0], 1 },
 523                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 524                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 525                         { NULL, 0 },
 526                 },
 527                 {
 528                         { &ifm_shared_option_descriptions[0], 0 },
 529                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 530                         { NULL, 0 },
 531                 },
 532                 {
 533                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 534                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 535                         { NULL, 0 },
 536                 },
 537         },
 538         {
 539                 {
 540                         { &ifm_subtype_shared_descriptions[0], 0 },
 541                         { &ifm_subtype_shared_aliases[0], 1 },
 542                         { &ifm_subtype_atm_descriptions[0], 0 },
 543                         { &ifm_subtype_atm_aliases[0], 1 },
 544                         { NULL, 0 },
 545                 },
 546                 {
 547                         { &ifm_shared_option_descriptions[0], 0 },
 548                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 549                         { NULL, 0 },
 550                 },
 551                 {
 552                         { NULL, 0 },
 553                 },
 554         },
 555 #endif
 556 #endif /* __APPLE__ */
 557 };
 558
 559 static int
 560 get_media_subtype(int type, const char *val)
 561 {
 562         struct ifmedia_description *desc;
 563         struct ifmedia_type_to_subtype *ttos;
 564         int rval, i;
 565
 566         /* Find the top-level interface type. */
 567         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 568             desc->ifmt_string != NULL; desc++, ttos++)
 569                 if (type == desc->ifmt_word)
 570                         break;
 571         if (desc->ifmt_string == NULL)
 572                 errx(1, "unknown media type 0x%x", type);
 573
 574         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 575                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 576                 if (rval != -1)
 577                         return (rval);
 578         }
 579         errx(1, "unknown media subtype: %s", val);
 580         /*NOTREACHED*/
 581 }
 582
 583 #ifdef notdef
 584 static int
 585 get_media_mode(int type, const char *val)
 586 {
 587         struct ifmedia_description *desc;
 588         struct ifmedia_type_to_subtype *ttos;
 589         int rval, i;
 590
 591         /* Find the top-level interface type. */
 592         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 593             desc->ifmt_string != NULL; desc++, ttos++)
 594                 if (type == desc->ifmt_word)
 595                         break;
 596         if (desc->ifmt_string == NULL)
 597                 errx(1, "unknown media mode 0x%x", type);
 598
 599         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 600                 rval = lookup_media_word(ttos->modes[i].desc, val);
 601                 if (rval != -1)
 602                         return (rval);
 603         }
 604         return -1;
 605 }
 606 #endif
 607
 608 static int
 609 get_media_options(int type, const char *val)
 610 {
 611         struct ifmedia_description *desc;
 612         struct ifmedia_type_to_subtype *ttos;
 613         char *optlist, *optptr;
 614         int option = 0, i, rval = 0;
 615
 616         /* We muck with the string, so copy it. */
 617         optlist = strdup(val);
 618         if (optlist == NULL)
 619                 err(1, "strdup");
 620
 621         /* Find the top-level interface type. */
 622         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 623             desc->ifmt_string != NULL; desc++, ttos++)
 624                 if (type == desc->ifmt_word)
 625                         break;
 626         if (desc->ifmt_string == NULL)
 627                 errx(1, "unknown media type 0x%x", type);
 628
 629         /*
 630          * Look up the options in the user-provided comma-separated
 631          * list.
 632          */
 633         optptr = optlist;
 634         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 635                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 636                         option = lookup_media_word(ttos->options[i].desc, optptr);
 637                         if (option != -1)
 638                                 break;
 639                 }
 640                 if (option == 0)
 641                         errx(1, "unknown option: %s", optptr);
 642                 rval |= option;
 643         }
 644
 645         free(optlist);
 646         return (rval);
 647 }
 648
 649 static int
 650 lookup_media_word(struct ifmedia_description *desc, const char *val)
 651 {
 652
 653         for (; desc->ifmt_string != NULL; desc++)
 654                 if (strcasecmp(desc->ifmt_string, val) == 0)
 655                         return (desc->ifmt_word);
 656
 657         return (-1);
 658 }
 659
 660 static struct ifmedia_description *get_toptype_desc(int ifmw)
 661 {
 662         struct ifmedia_description *desc;
 663
 664         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 665                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 666                         break;
 667
 668         return desc;
 669 }
 670
 671 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 672 {
 673         struct ifmedia_description *desc;
 674         struct ifmedia_type_to_subtype *ttos;
 675
 676         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 677             desc->ifmt_string != NULL; desc++, ttos++)
 678                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 679                         break;
 680
 681         return ttos;
 682 }
 683
 684 static struct ifmedia_description *get_subtype_desc(int ifmw,
 685     struct ifmedia_type_to_subtype *ttos)
 686 {
 687         int i;
 688         struct ifmedia_description *desc;
 689
 690         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 691                 if (ttos->subtypes[i].alias)
 692                         continue;
 693                 for (desc = ttos->subtypes[i].desc;
 694                     desc->ifmt_string != NULL; desc++) {
 695                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 696                                 return desc;
 697                 }
 698         }
 699
 700         return NULL;
 701 }
 702
 703 #ifdef notdef
 704 static struct ifmedia_description *get_mode_desc(int ifmw,
 705     struct ifmedia_type_to_subtype *ttos)
 706 {
 707         int i;
 708         struct ifmedia_description *desc;
 709
 710         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 711                 if (ttos->modes[i].alias)
 712                         continue;
 713                 for (desc = ttos->modes[i].desc;
 714                     desc->ifmt_string != NULL; desc++) {
 715                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 716                                 return desc;
 717                 }
 718         }
 719
 720         return NULL;
 721 }
 722 #endif
 723
 724 static void
 725 print_media_word(int ifmw, int print_toptype)
 726 {
 727         struct ifmedia_description *desc;
 728         struct ifmedia_type_to_subtype *ttos;
 729         int seen_option = 0, i;
 730
 731         /* Find the top-level interface type. */
 732         desc = get_toptype_desc(ifmw);
 733         ttos = get_toptype_ttos(ifmw);
 734         if (desc->ifmt_string == NULL) {
 735                 printf("<unknown type>");
 736                 return;
 737 #ifdef notdef
 738         } else if (print_toptype) {
 739                 printf("%s", desc->ifmt_string);
 740 #endif
 741         }
 742
 743         /*
 744          * Don't print the top-level type; it's not like we can
 745          * change it, or anything.
 746          */
 747
 748         /* Find subtype. */
 749         desc = get_subtype_desc(ifmw, ttos);
 750         if (desc == NULL) {
 751                 printf("<unknown subtype>");
 752                 return;
 753         }
 754
 755 #ifdef notdef
 756         if (print_toptype)
 757                 putchar(' ');
 758 #endif
 759
 760         printf("%s", desc->ifmt_string);
 761
 762 #ifdef notdef
 763         if (print_toptype) {
 764                 desc = get_mode_desc(ifmw, ttos);
 765                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 766                         printf(" mode %s", desc->ifmt_string);
 767         }
 768 #endif
 769         /* Find options. */
 770         for (i = 0; ttos->options[i].desc != NULL; i++) {
 771                 if (ttos->options[i].alias)
 772                         continue;
 773                 for (desc = ttos->options[i].desc;
 774                     desc->ifmt_string != NULL; desc++) {
 775                         if (ifmw & desc->ifmt_word) {
 776                                 if (seen_option == 0)
 777                                         printf(" <");
 778                                 printf("%s%s", seen_option++ ? "," : "",
 779                                     desc->ifmt_string);
 780                         }
 781                 }
 782         }
 783         printf("%s", seen_option ? ">" : "");
 784
 785 #ifdef notdef
 786         if (print_toptype && IFM_INST(ifmw) != 0)
 787                 printf(" instance %d", IFM_INST(ifmw));
 788 #endif
 789 }
 790
 791 static void
 792 print_media_word_ifconfig(int ifmw)
 793 {
 794         struct ifmedia_description *desc;
 795         struct ifmedia_type_to_subtype *ttos;
 796         int i;
 797
 798         /* Find the top-level interface type. */
 799         desc = get_toptype_desc(ifmw);
 800         ttos = get_toptype_ttos(ifmw);
 801         if (desc->ifmt_string == NULL) {
 802                 printf("<unknown type>");
 803                 return;
 804         }
 805
 806         /*
 807          * Don't print the top-level type; it's not like we can
 808          * change it, or anything.
 809          */
 810
 811         /* Find subtype. */
 812         desc = get_subtype_desc(ifmw, ttos);
 813         if (desc == NULL) {
 814                 printf("<unknown subtype>");
 815                 return;
 816         }
 817
 818         printf("media %s", desc->ifmt_string);
 819
 820 #ifdef notdef
 821         desc = get_mode_desc(ifmw, ttos);
 822         if (desc != NULL)
 823                 printf(" mode %s", desc->ifmt_string);
 824 #endif
 825
 826         /* Find options. */
 827         for (i = 0; ttos->options[i].desc != NULL; i++) {
 828                 if (ttos->options[i].alias)
 829                         continue;
 830                 for (desc = ttos->options[i].desc;
 831                     desc->ifmt_string != NULL; desc++) {
 832                         if (ifmw & desc->ifmt_word) {
 833                                 printf(" mediaopt %s", desc->ifmt_string);
 834                         }
 835                 }
 836         }
 837
 838         if (IFM_INST(ifmw) != 0)
 839                 printf(" instance %d", IFM_INST(ifmw));
 840 }
 841
 842 /**********************************************************************
 843  * ...until here.
 844  **********************************************************************/
 845
 846 static struct cmd media_cmds[] = {
 847         DEF_CMD_ARG("media",    setmedia),
 848 #ifdef notdef
 849         DEF_CMD_ARG("mode",     setmediamode),
 850 #endif
 851         DEF_CMD_ARG("mediaopt", setmediaopt),
 852         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 853         DEF_CMD_ARG("inst",     setmediainst),
 854         DEF_CMD_ARG("instance", setmediainst),
 855 };
 856 static struct afswtch af_media = {
 857         .af_name        = "af_media",
 858         .af_af          = AF_UNSPEC,
 859         .af_other_status = media_status,
 860 };
 861
 862 static __constructor void
 863 ifmedia_ctor(void)
 864 {
 865 #define N(a)    (sizeof(a) / sizeof(a[0]))
 866         int i;
 867
 868         for (i = 0; i < N(media_cmds);  i++)
 869                 cmd_register(&media_cmds[i]);
 870         af_register(&af_media);
 871 #undef N
 872 }