sbin/etherswitchcfg/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD$ */
   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  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  */
  64 /*
  65  * based on sbin/ifconfig/ifmedia.c r221954
  66  */
  67
  68 #include <sys/param.h>
  69 #include <sys/ioctl.h>
  70 #include <sys/socket.h>
  71 #include <sys/sysctl.h>
  72 #include <sys/time.h>
  73
  74 #include <net/if.h>
  75 #include <net/if_dl.h>
  76 #include <net/if_types.h>
  77 #include <net/if_media.h>
  78 #include <net/route.h>
  79
  80 #include <ctype.h>
  81 #include <err.h>
  82 #include <errno.h>
  83 #include <fcntl.h>
  84 #include <stdio.h>
  85 #include <stdlib.h>
  86 #include <string.h>
  87 #include <unistd.h>
  88
  89 void    domediaopt(const char *, int, int);
  90 int     get_media_subtype(int, const char *);
  91 int     get_media_mode(int, const char *);
  92 int     get_media_options(int, const char *);
  93 int     lookup_media_word(struct ifmedia_description *, const char *);
  94 void    print_media_word(int, int);
  95 void    print_media_word_ifconfig(int);
  96
  97 #if 0
  98 static struct ifmedia_description *get_toptype_desc(int);
  99 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
 100 static struct ifmedia_description *get_subtype_desc(int,
 101     struct ifmedia_type_to_subtype *ttos);
 102
 103 #define IFM_OPMODE(x) \
 104         ((x) & (IFM_IEEE80211_ADHOC | IFM_IEEE80211_HOSTAP | \
 105          IFM_IEEE80211_IBSS | IFM_IEEE80211_WDS | IFM_IEEE80211_MONITOR | \
 106          IFM_IEEE80211_MBSS))
 107 #define IFM_IEEE80211_STA       0
 108
 109 static void
 110 media_status(int s)
 111 {
 112         struct ifmediareq ifmr;
 113         int *media_list, i;
 114
 115         (void) memset(&ifmr, 0, sizeof(ifmr));
 116         (void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 117
 118         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
 119                 /*
 120                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 121                  */
 122                 return;
 123         }
 124
 125         if (ifmr.ifm_count == 0) {
 126                 warnx("%s: no media types?", name);
 127                 return;
 128         }
 129
 130         media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
 131         if (media_list == NULL)
 132                 err(1, "malloc");
 133         ifmr.ifm_ulist = media_list;
 134
 135         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
 136                 err(1, "SIOCGIFMEDIA");
 137
 138         printf("\tmedia: ");
 139         print_media_word(ifmr.ifm_current, 1);
 140         if (ifmr.ifm_active != ifmr.ifm_current) {
 141                 putchar(' ');
 142                 putchar('(');
 143                 print_media_word(ifmr.ifm_active, 0);
 144                 putchar(')');
 145         }
 146
 147         putchar('\n');
 148
 149         if (ifmr.ifm_status & IFM_AVALID) {
 150                 printf("\tstatus: ");
 151                 switch (IFM_TYPE(ifmr.ifm_active)) {
 152                 case IFM_ETHER:
 153                 case IFM_ATM:
 154                         if (ifmr.ifm_status & IFM_ACTIVE)
 155                                 printf("active");
 156                         else
 157                                 printf("no carrier");
 158                         break;
 159
 160                 case IFM_FDDI:
 161                 case IFM_TOKEN:
 162                         if (ifmr.ifm_status & IFM_ACTIVE)
 163                                 printf("inserted");
 164                         else
 165                                 printf("no ring");
 166                         break;
 167
 168                 case IFM_IEEE80211:
 169                         if (ifmr.ifm_status & IFM_ACTIVE) {
 170                                 /* NB: only sta mode associates */
 171                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 172                                         printf("associated");
 173                                 else
 174                                         printf("running");
 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 struct ifmediareq *
 195 ifmedia_getstate(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         ifmr = ifmedia_getstate(s);
 260
 261         /*
 262          * We are primarily concerned with the top-level type.
 263          * However, "current" may be only IFM_NONE, so we just look
 264          * for the top-level type in the first "supported type"
 265          * entry.
 266          *
 267          * (I'm assuming that all supported media types for a given
 268          * interface will be the same top-level type..)
 269          */
 270         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 271
 272         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 273         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 274             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 275
 276         ifmr->ifm_current = ifr.ifr_media;
 277         callback_register(setifmediacallback, (void *)ifmr);
 278 }
 279
 280 static void
 281 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 282 {
 283
 284         domediaopt(val, 0, s);
 285 }
 286
 287 static void
 288 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 289 {
 290
 291         domediaopt(val, 1, s);
 292 }
 293
 294 static void
 295 domediaopt(const char *val, int clear, int s)
 296 {
 297         struct ifmediareq *ifmr;
 298         int options;
 299
 300         ifmr = ifmedia_getstate(s);
 301
 302         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 303
 304         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 305         ifr.ifr_media = ifmr->ifm_current;
 306         if (clear)
 307                 ifr.ifr_media &= ~options;
 308         else {
 309                 if (options & IFM_HDX) {
 310                         ifr.ifr_media &= ~IFM_FDX;
 311                         options &= ~IFM_HDX;
 312                 }
 313                 ifr.ifr_media |= options;
 314         }
 315         ifmr->ifm_current = ifr.ifr_media;
 316         callback_register(setifmediacallback, (void *)ifmr);
 317 }
 318
 319 static void
 320 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 321 {
 322         struct ifmediareq *ifmr;
 323         int inst;
 324
 325         ifmr = ifmedia_getstate(s);
 326
 327         inst = atoi(val);
 328         if (inst < 0 || inst > (int)IFM_INST_MAX)
 329                 errx(1, "invalid media instance: %s", val);
 330
 331         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 332         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 333
 334         ifmr->ifm_current = ifr.ifr_media;
 335         callback_register(setifmediacallback, (void *)ifmr);
 336 }
 337
 338 static void
 339 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 340 {
 341         struct ifmediareq *ifmr;
 342         int mode;
 343
 344         ifmr = ifmedia_getstate(s);
 345
 346         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 347
 348         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 349         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 350
 351         ifmr->ifm_current = ifr.ifr_media;
 352         callback_register(setifmediacallback, (void *)ifmr);
 353 }
 354 #endif
 355
 356 /**********************************************************************
 357  * A good chunk of this is duplicated from sys/net/ifmedia.c
 358  **********************************************************************/
 359
 360 static struct ifmedia_description ifm_type_descriptions[] =
 361     IFM_TYPE_DESCRIPTIONS;
 362
 363 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 364     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 365
 366 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 367     IFM_SUBTYPE_ETHERNET_ALIASES;
 368
 369 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 370     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 371
 372 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 373     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 374
 375 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 376     IFM_SUBTYPE_TOKENRING_ALIASES;
 377
 378 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 379     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 380
 381 static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
 382     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
 383
 384 static struct ifmedia_description ifm_subtype_fddi_aliases[] =
 385     IFM_SUBTYPE_FDDI_ALIASES;
 386
 387 static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
 388     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
 389
 390 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 391     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 392
 393 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 394     IFM_SUBTYPE_IEEE80211_ALIASES;
 395
 396 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 397     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 398
 399 static struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 400     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 401
 402 static struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 403     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 404
 405 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 406     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 407
 408 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 409     IFM_SUBTYPE_ATM_ALIASES;
 410
 411 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 412     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 413
 414 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 415     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 416
 417 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 418     IFM_SUBTYPE_SHARED_ALIASES;
 419
 420 static struct ifmedia_description ifm_shared_option_descriptions[] =
 421     IFM_SHARED_OPTION_DESCRIPTIONS;
 422
 423 static struct ifmedia_description ifm_shared_option_aliases[] =
 424     IFM_SHARED_OPTION_ALIASES;
 425
 426 struct ifmedia_type_to_subtype {
 427         struct {
 428                 struct ifmedia_description *desc;
 429                 int alias;
 430         } subtypes[5];
 431         struct {
 432                 struct ifmedia_description *desc;
 433                 int alias;
 434         } options[4];
 435         struct {
 436                 struct ifmedia_description *desc;
 437                 int alias;
 438         } modes[3];
 439 };
 440
 441 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 442 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 443         {
 444                 {
 445                         { &ifm_subtype_shared_descriptions[0], 0 },
 446                         { &ifm_subtype_shared_aliases[0], 1 },
 447                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 448                         { &ifm_subtype_ethernet_aliases[0], 1 },
 449                         { NULL, 0 },
 450                 },
 451                 {
 452                         { &ifm_shared_option_descriptions[0], 0 },
 453                         { &ifm_shared_option_aliases[0], 1 },
 454                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 455                         { NULL, 0 },
 456                 },
 457                 {
 458                         { NULL, 0 },
 459                 },
 460         },
 461         {
 462                 {
 463                         { &ifm_subtype_shared_descriptions[0], 0 },
 464                         { &ifm_subtype_shared_aliases[0], 1 },
 465                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 466                         { &ifm_subtype_tokenring_aliases[0], 1 },
 467                         { NULL, 0 },
 468                 },
 469                 {
 470                         { &ifm_shared_option_descriptions[0], 0 },
 471                         { &ifm_shared_option_aliases[0], 1 },
 472                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 473                         { NULL, 0 },
 474                 },
 475                 {
 476                         { NULL, 0 },
 477                 },
 478         },
 479         {
 480                 {
 481                         { &ifm_subtype_shared_descriptions[0], 0 },
 482                         { &ifm_subtype_shared_aliases[0], 1 },
 483                         { &ifm_subtype_fddi_descriptions[0], 0 },
 484                         { &ifm_subtype_fddi_aliases[0], 1 },
 485                         { NULL, 0 },
 486                 },
 487                 {
 488                         { &ifm_shared_option_descriptions[0], 0 },
 489                         { &ifm_shared_option_aliases[0], 1 },
 490                         { &ifm_subtype_fddi_option_descriptions[0], 0 },
 491                         { NULL, 0 },
 492                 },
 493                 {
 494                         { NULL, 0 },
 495                 },
 496         },
 497         {
 498                 {
 499                         { &ifm_subtype_shared_descriptions[0], 0 },
 500                         { &ifm_subtype_shared_aliases[0], 1 },
 501                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 502                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 503                         { NULL, 0 },
 504                 },
 505                 {
 506                         { &ifm_shared_option_descriptions[0], 0 },
 507                         { &ifm_shared_option_aliases[0], 1 },
 508                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 509                         { NULL, 0 },
 510                 },
 511                 {
 512                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 513                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 514                         { NULL, 0 },
 515                 },
 516         },
 517         {
 518                 {
 519                         { &ifm_subtype_shared_descriptions[0], 0 },
 520                         { &ifm_subtype_shared_aliases[0], 1 },
 521                         { &ifm_subtype_atm_descriptions[0], 0 },
 522                         { &ifm_subtype_atm_aliases[0], 1 },
 523                         { NULL, 0 },
 524                 },
 525                 {
 526                         { &ifm_shared_option_descriptions[0], 0 },
 527                         { &ifm_shared_option_aliases[0], 1 },
 528                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 529                         { NULL, 0 },
 530                 },
 531                 {
 532                         { NULL, 0 },
 533                 },
 534         },
 535 };
 536
 537 int
 538 get_media_subtype(int type, const char *val)
 539 {
 540         struct ifmedia_description *desc;
 541         struct ifmedia_type_to_subtype *ttos;
 542         int rval, i;
 543
 544         /* Find the top-level interface type. */
 545         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 546             desc->ifmt_string != NULL; desc++, ttos++)
 547                 if (type == desc->ifmt_word)
 548                         break;
 549         if (desc->ifmt_string == NULL)
 550                 errx(1, "unknown media type 0x%x", type);
 551
 552         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 553                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 554                 if (rval != -1)
 555                         return (rval);
 556         }
 557         errx(1, "unknown media subtype: %s", val);
 558         /*NOTREACHED*/
 559 }
 560
 561 int
 562 get_media_mode(int type, const char *val)
 563 {
 564         struct ifmedia_description *desc;
 565         struct ifmedia_type_to_subtype *ttos;
 566         int rval, i;
 567
 568         /* Find the top-level interface type. */
 569         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 570             desc->ifmt_string != NULL; desc++, ttos++)
 571                 if (type == desc->ifmt_word)
 572                         break;
 573         if (desc->ifmt_string == NULL)
 574                 errx(1, "unknown media mode 0x%x", type);
 575
 576         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 577                 rval = lookup_media_word(ttos->modes[i].desc, val);
 578                 if (rval != -1)
 579                         return (rval);
 580         }
 581         return -1;
 582 }
 583
 584 int
 585 get_media_options(int type, const char *val)
 586 {
 587         struct ifmedia_description *desc;
 588         struct ifmedia_type_to_subtype *ttos;
 589         char *optlist, *optptr;
 590         int option = 0, i, rval = 0;
 591
 592         /* We muck with the string, so copy it. */
 593         optlist = strdup(val);
 594         if (optlist == NULL)
 595                 err(1, "strdup");
 596
 597         /* Find the top-level interface type. */
 598         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 599             desc->ifmt_string != NULL; desc++, ttos++)
 600                 if (type == desc->ifmt_word)
 601                         break;
 602         if (desc->ifmt_string == NULL)
 603                 errx(1, "unknown media type 0x%x", type);
 604
 605         /*
 606          * Look up the options in the user-provided comma-separated
 607          * list.
 608          */
 609         optptr = optlist;
 610         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 611                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 612                         option = lookup_media_word(ttos->options[i].desc, optptr);
 613                         if (option != -1)
 614                                 break;
 615                 }
 616                 if (option == 0)
 617                         errx(1, "unknown option: %s", optptr);
 618                 rval |= option;
 619         }
 620
 621         free(optlist);
 622         return (rval);
 623 }
 624
 625 int
 626 lookup_media_word(struct ifmedia_description *desc, const char *val)
 627 {
 628
 629         for (; desc->ifmt_string != NULL; desc++)
 630                 if (strcasecmp(desc->ifmt_string, val) == 0)
 631                         return (desc->ifmt_word);
 632
 633         return (-1);
 634 }
 635
 636 static struct ifmedia_description *get_toptype_desc(int ifmw)
 637 {
 638         struct ifmedia_description *desc;
 639
 640         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 641                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 642                         break;
 643
 644         return desc;
 645 }
 646
 647 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 648 {
 649         struct ifmedia_description *desc;
 650         struct ifmedia_type_to_subtype *ttos;
 651
 652         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 653             desc->ifmt_string != NULL; desc++, ttos++)
 654                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 655                         break;
 656
 657         return ttos;
 658 }
 659
 660 static struct ifmedia_description *get_subtype_desc(int ifmw,
 661     struct ifmedia_type_to_subtype *ttos)
 662 {
 663         int i;
 664         struct ifmedia_description *desc;
 665
 666         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 667                 if (ttos->subtypes[i].alias)
 668                         continue;
 669                 for (desc = ttos->subtypes[i].desc;
 670                     desc->ifmt_string != NULL; desc++) {
 671                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 672                                 return desc;
 673                 }
 674         }
 675
 676         return NULL;
 677 }
 678
 679 static struct ifmedia_description *get_mode_desc(int ifmw,
 680     struct ifmedia_type_to_subtype *ttos)
 681 {
 682         int i;
 683         struct ifmedia_description *desc;
 684
 685         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 686                 if (ttos->modes[i].alias)
 687                         continue;
 688                 for (desc = ttos->modes[i].desc;
 689                     desc->ifmt_string != NULL; desc++) {
 690                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 691                                 return desc;
 692                 }
 693         }
 694
 695         return NULL;
 696 }
 697
 698 void
 699 print_media_word(int ifmw, int print_toptype)
 700 {
 701         struct ifmedia_description *desc;
 702         struct ifmedia_type_to_subtype *ttos;
 703         int seen_option = 0, i;
 704
 705         /* Find the top-level interface type. */
 706         desc = get_toptype_desc(ifmw);
 707         ttos = get_toptype_ttos(ifmw);
 708         if (desc->ifmt_string == NULL) {
 709                 printf("<unknown type>");
 710                 return;
 711         } else if (print_toptype) {
 712                 printf("%s", desc->ifmt_string);
 713         }
 714
 715         /*
 716          * Don't print the top-level type; it's not like we can
 717          * change it, or anything.
 718          */
 719
 720         /* Find subtype. */
 721         desc = get_subtype_desc(ifmw, ttos);
 722         if (desc == NULL) {
 723                 printf("<unknown subtype>");
 724                 return;
 725         }
 726
 727         if (print_toptype)
 728                 putchar(' ');
 729
 730         printf("%s", desc->ifmt_string);
 731
 732         if (print_toptype) {
 733                 desc = get_mode_desc(ifmw, ttos);
 734                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 735                         printf(" mode %s", desc->ifmt_string);
 736         }
 737
 738         /* Find options. */
 739         for (i = 0; ttos->options[i].desc != NULL; i++) {
 740                 if (ttos->options[i].alias)
 741                         continue;
 742                 for (desc = ttos->options[i].desc;
 743                     desc->ifmt_string != NULL; desc++) {
 744                         if (ifmw & desc->ifmt_word) {
 745                                 if (seen_option == 0)
 746                                         printf(" <");
 747                                 printf("%s%s", seen_option++ ? "," : "",
 748                                     desc->ifmt_string);
 749                         }
 750                 }
 751         }
 752         printf("%s", seen_option ? ">" : "");
 753
 754         if (print_toptype && IFM_INST(ifmw) != 0)
 755                 printf(" instance %d", IFM_INST(ifmw));
 756 }
 757
 758 void
 759 print_media_word_ifconfig(int ifmw)
 760 {
 761         struct ifmedia_description *desc;
 762         struct ifmedia_type_to_subtype *ttos;
 763         int seen_option = 0, i;
 764
 765         /* Find the top-level interface type. */
 766         desc = get_toptype_desc(ifmw);
 767         ttos = get_toptype_ttos(ifmw);
 768         if (desc->ifmt_string == NULL) {
 769                 printf("<unknown type>");
 770                 return;
 771         }
 772
 773         /*
 774          * Don't print the top-level type; it's not like we can
 775          * change it, or anything.
 776          */
 777
 778         /* Find subtype. */
 779         desc = get_subtype_desc(ifmw, ttos);
 780         if (desc == NULL) {
 781                 printf("<unknown subtype>");
 782                 return;
 783         }
 784
 785         printf("media %s", desc->ifmt_string);
 786
 787         desc = get_mode_desc(ifmw, ttos);
 788         if (desc != NULL)
 789                 printf(" mode %s", desc->ifmt_string);
 790
 791         /* Find options. */
 792         for (i = 0; ttos->options[i].desc != NULL; i++) {
 793                 if (ttos->options[i].alias)
 794                         continue;
 795                 for (desc = ttos->options[i].desc;
 796                     desc->ifmt_string != NULL; desc++) {
 797                         if (ifmw & desc->ifmt_word) {
 798                                 if (seen_option == 0)
 799                                         printf(" mediaopt ");
 800                                 printf("%s%s", seen_option++ ? "," : "",
 801                                     desc->ifmt_string);
 802                         }
 803                 }
 804         }
 805
 806         if (IFM_INST(ifmw) != 0)
 807                 printf(" instance %d", IFM_INST(ifmw));
 808 }
 809
 810 /**********************************************************************
 811  * ...until here.
 812  **********************************************************************/