sbin/etherswitchcfg/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD$ */
   3
   4 /*-
   5  * SPDX-License-Identifier: BSD-4-Clause
   6  *
   7  * Copyright (c) 1997 Jason R. Thorpe.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed for the NetBSD Project
  21  *      by Jason R. Thorpe.
  22  * 4. The name of the author may not be used to endorse or promote products
  23  *    derived from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  26  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  30  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  31  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  32  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  33  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 /*
  39  * Copyright (c) 1983, 1993
  40  *      The Regents of the University of California.  All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  * 1. Redistributions of source code must retain the above copyright
  46  *    notice, this list of conditions and the following disclaimer.
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in the
  49  *    documentation and/or other materials provided with the distribution.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  */
  66 /*
  67  * based on sbin/ifconfig/ifmedia.c r221954
  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 void    domediaopt(const char *, int, int);
  92 int     get_media_subtype(int, const char *);
  93 int     get_media_mode(int, const char *);
  94 int     get_media_options(int, const char *);
  95 int     lookup_media_word(struct ifmedia_description *, const char *);
  96 void    print_media_word(int, int);
  97 void    print_media_word_ifconfig(int);
  98
  99 #if 0
 100 static struct ifmedia_description *get_toptype_desc(int);
 101 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
 102 static struct ifmedia_description *get_subtype_desc(int,
 103     struct ifmedia_type_to_subtype *ttos);
 104
 105 #define IFM_OPMODE(x) \
 106         ((x) & (IFM_IEEE80211_ADHOC | IFM_IEEE80211_HOSTAP | \
 107          IFM_IEEE80211_IBSS | IFM_IEEE80211_WDS | IFM_IEEE80211_MONITOR | \
 108          IFM_IEEE80211_MBSS))
 109 #define IFM_IEEE80211_STA       0
 110
 111 static void
 112 media_status(int s)
 113 {
 114         struct ifmediareq ifmr;
 115         int *media_list, i;
 116
 117         (void) memset(&ifmr, 0, sizeof(ifmr));
 118         (void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 119
 120         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
 121                 /*
 122                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 123                  */
 124                 return;
 125         }
 126
 127         if (ifmr.ifm_count == 0) {
 128                 warnx("%s: no media types?", name);
 129                 return;
 130         }
 131
 132         media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
 133         if (media_list == NULL)
 134                 err(1, "malloc");
 135         ifmr.ifm_ulist = media_list;
 136
 137         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
 138                 err(1, "SIOCGIFMEDIA");
 139
 140         printf("\tmedia: ");
 141         print_media_word(ifmr.ifm_current, 1);
 142         if (ifmr.ifm_active != ifmr.ifm_current) {
 143                 putchar(' ');
 144                 putchar('(');
 145                 print_media_word(ifmr.ifm_active, 0);
 146                 putchar(')');
 147         }
 148
 149         putchar('\n');
 150
 151         if (ifmr.ifm_status & IFM_AVALID) {
 152                 printf("\tstatus: ");
 153                 switch (IFM_TYPE(ifmr.ifm_active)) {
 154                 case IFM_ETHER:
 155                 case IFM_ATM:
 156                         if (ifmr.ifm_status & IFM_ACTIVE)
 157                                 printf("active");
 158                         else
 159                                 printf("no carrier");
 160                         break;
 161
 162                 case IFM_FDDI:
 163                 case IFM_TOKEN:
 164                         if (ifmr.ifm_status & IFM_ACTIVE)
 165                                 printf("inserted");
 166                         else
 167                                 printf("no ring");
 168                         break;
 169
 170                 case IFM_IEEE80211:
 171                         if (ifmr.ifm_status & IFM_ACTIVE) {
 172                                 /* NB: only sta mode associates */
 173                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 174                                         printf("associated");
 175                                 else
 176                                         printf("running");
 177                         } else
 178                                 printf("no carrier");
 179                         break;
 180                 }
 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) strncpy(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, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 221                         err(1, "SIOCGIFMEDIA");
 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, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 233                         err(1, "SIOCGIFMEDIA");
 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         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 275         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 276             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 277
 278         ifmr->ifm_current = ifr.ifr_media;
 279         callback_register(setifmediacallback, (void *)ifmr);
 280 }
 281
 282 static void
 283 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 284 {
 285
 286         domediaopt(val, 0, s);
 287 }
 288
 289 static void
 290 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 291 {
 292
 293         domediaopt(val, 1, s);
 294 }
 295
 296 static void
 297 domediaopt(const char *val, int clear, int s)
 298 {
 299         struct ifmediareq *ifmr;
 300         int options;
 301
 302         ifmr = ifmedia_getstate(s);
 303
 304         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 305
 306         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 307         ifr.ifr_media = ifmr->ifm_current;
 308         if (clear)
 309                 ifr.ifr_media &= ~options;
 310         else {
 311                 if (options & IFM_HDX) {
 312                         ifr.ifr_media &= ~IFM_FDX;
 313                         options &= ~IFM_HDX;
 314                 }
 315                 ifr.ifr_media |= options;
 316         }
 317         ifmr->ifm_current = ifr.ifr_media;
 318         callback_register(setifmediacallback, (void *)ifmr);
 319 }
 320
 321 static void
 322 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 323 {
 324         struct ifmediareq *ifmr;
 325         int inst;
 326
 327         ifmr = ifmedia_getstate(s);
 328
 329         inst = atoi(val);
 330         if (inst < 0 || inst > (int)IFM_INST_MAX)
 331                 errx(1, "invalid media instance: %s", val);
 332
 333         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 334         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 335
 336         ifmr->ifm_current = ifr.ifr_media;
 337         callback_register(setifmediacallback, (void *)ifmr);
 338 }
 339
 340 static void
 341 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 342 {
 343         struct ifmediareq *ifmr;
 344         int mode;
 345
 346         ifmr = ifmedia_getstate(s);
 347
 348         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 349
 350         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 351         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 352
 353         ifmr->ifm_current = ifr.ifr_media;
 354         callback_register(setifmediacallback, (void *)ifmr);
 355 }
 356 #endif
 357
 358 /**********************************************************************
 359  * A good chunk of this is duplicated from sys/net/ifmedia.c
 360  **********************************************************************/
 361
 362 static struct ifmedia_description ifm_type_descriptions[] =
 363     IFM_TYPE_DESCRIPTIONS;
 364
 365 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 366     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 367
 368 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 369     IFM_SUBTYPE_ETHERNET_ALIASES;
 370
 371 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 372     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 373
 374 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 375     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 376
 377 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 378     IFM_SUBTYPE_TOKENRING_ALIASES;
 379
 380 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 381     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 382
 383 static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
 384     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
 385
 386 static struct ifmedia_description ifm_subtype_fddi_aliases[] =
 387     IFM_SUBTYPE_FDDI_ALIASES;
 388
 389 static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
 390     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
 391
 392 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 393     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 394
 395 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 396     IFM_SUBTYPE_IEEE80211_ALIASES;
 397
 398 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 399     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 400
 401 static struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 402     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 403
 404 static struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 405     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 406
 407 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 408     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 409
 410 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 411     IFM_SUBTYPE_ATM_ALIASES;
 412
 413 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 414     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 415
 416 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 417     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 418
 419 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 420     IFM_SUBTYPE_SHARED_ALIASES;
 421
 422 static struct ifmedia_description ifm_shared_option_descriptions[] =
 423     IFM_SHARED_OPTION_DESCRIPTIONS;
 424
 425 static struct ifmedia_description ifm_shared_option_aliases[] =
 426     IFM_SHARED_OPTION_ALIASES;
 427
 428 struct ifmedia_type_to_subtype {
 429         struct {
 430                 struct ifmedia_description *desc;
 431                 int alias;
 432         } subtypes[5];
 433         struct {
 434                 struct ifmedia_description *desc;
 435                 int alias;
 436         } options[4];
 437         struct {
 438                 struct ifmedia_description *desc;
 439                 int alias;
 440         } modes[3];
 441 };
 442
 443 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 444 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 445         {
 446                 {
 447                         { &ifm_subtype_shared_descriptions[0], 0 },
 448                         { &ifm_subtype_shared_aliases[0], 1 },
 449                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 450                         { &ifm_subtype_ethernet_aliases[0], 1 },
 451                         { NULL, 0 },
 452                 },
 453                 {
 454                         { &ifm_shared_option_descriptions[0], 0 },
 455                         { &ifm_shared_option_aliases[0], 1 },
 456                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 457                         { NULL, 0 },
 458                 },
 459                 {
 460                         { NULL, 0 },
 461                 },
 462         },
 463         {
 464                 {
 465                         { &ifm_subtype_shared_descriptions[0], 0 },
 466                         { &ifm_subtype_shared_aliases[0], 1 },
 467                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 468                         { &ifm_subtype_tokenring_aliases[0], 1 },
 469                         { NULL, 0 },
 470                 },
 471                 {
 472                         { &ifm_shared_option_descriptions[0], 0 },
 473                         { &ifm_shared_option_aliases[0], 1 },
 474                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 475                         { NULL, 0 },
 476                 },
 477                 {
 478                         { NULL, 0 },
 479                 },
 480         },
 481         {
 482                 {
 483                         { &ifm_subtype_shared_descriptions[0], 0 },
 484                         { &ifm_subtype_shared_aliases[0], 1 },
 485                         { &ifm_subtype_fddi_descriptions[0], 0 },
 486                         { &ifm_subtype_fddi_aliases[0], 1 },
 487                         { NULL, 0 },
 488                 },
 489                 {
 490                         { &ifm_shared_option_descriptions[0], 0 },
 491                         { &ifm_shared_option_aliases[0], 1 },
 492                         { &ifm_subtype_fddi_option_descriptions[0], 0 },
 493                         { NULL, 0 },
 494                 },
 495                 {
 496                         { NULL, 0 },
 497                 },
 498         },
 499         {
 500                 {
 501                         { &ifm_subtype_shared_descriptions[0], 0 },
 502                         { &ifm_subtype_shared_aliases[0], 1 },
 503                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 504                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 505                         { NULL, 0 },
 506                 },
 507                 {
 508                         { &ifm_shared_option_descriptions[0], 0 },
 509                         { &ifm_shared_option_aliases[0], 1 },
 510                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 511                         { NULL, 0 },
 512                 },
 513                 {
 514                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 515                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 516                         { NULL, 0 },
 517                 },
 518         },
 519         {
 520                 {
 521                         { &ifm_subtype_shared_descriptions[0], 0 },
 522                         { &ifm_subtype_shared_aliases[0], 1 },
 523                         { &ifm_subtype_atm_descriptions[0], 0 },
 524                         { &ifm_subtype_atm_aliases[0], 1 },
 525                         { NULL, 0 },
 526                 },
 527                 {
 528                         { &ifm_shared_option_descriptions[0], 0 },
 529                         { &ifm_shared_option_aliases[0], 1 },
 530                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 531                         { NULL, 0 },
 532                 },
 533                 {
 534                         { NULL, 0 },
 535                 },
 536         },
 537 };
 538
 539 int
 540 get_media_subtype(int type, const char *val)
 541 {
 542         struct ifmedia_description *desc;
 543         struct ifmedia_type_to_subtype *ttos;
 544         int rval, i;
 545
 546         /* Find the top-level interface type. */
 547         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 548             desc->ifmt_string != NULL; desc++, ttos++)
 549                 if (type == desc->ifmt_word)
 550                         break;
 551         if (desc->ifmt_string == NULL)
 552                 errx(1, "unknown media type 0x%x", type);
 553
 554         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 555                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 556                 if (rval != -1)
 557                         return (rval);
 558         }
 559         errx(1, "unknown media subtype: %s", val);
 560         /*NOTREACHED*/
 561 }
 562
 563 int
 564 get_media_mode(int type, const char *val)
 565 {
 566         struct ifmedia_description *desc;
 567         struct ifmedia_type_to_subtype *ttos;
 568         int rval, i;
 569
 570         /* Find the top-level interface type. */
 571         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 572             desc->ifmt_string != NULL; desc++, ttos++)
 573                 if (type == desc->ifmt_word)
 574                         break;
 575         if (desc->ifmt_string == NULL)
 576                 errx(1, "unknown media mode 0x%x", type);
 577
 578         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 579                 rval = lookup_media_word(ttos->modes[i].desc, val);
 580                 if (rval != -1)
 581                         return (rval);
 582         }
 583         return -1;
 584 }
 585
 586 int
 587 get_media_options(int type, const char *val)
 588 {
 589         struct ifmedia_description *desc;
 590         struct ifmedia_type_to_subtype *ttos;
 591         char *optlist, *optptr;
 592         int option = 0, i, rval = 0;
 593
 594         /* We muck with the string, so copy it. */
 595         optlist = strdup(val);
 596         if (optlist == NULL)
 597                 err(1, "strdup");
 598
 599         /* Find the top-level interface type. */
 600         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 601             desc->ifmt_string != NULL; desc++, ttos++)
 602                 if (type == desc->ifmt_word)
 603                         break;
 604         if (desc->ifmt_string == NULL)
 605                 errx(1, "unknown media type 0x%x", type);
 606
 607         /*
 608          * Look up the options in the user-provided comma-separated
 609          * list.
 610          */
 611         optptr = optlist;
 612         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 613                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 614                         option = lookup_media_word(ttos->options[i].desc, optptr);
 615                         if (option != -1)
 616                                 break;
 617                 }
 618                 if (option == 0)
 619                         errx(1, "unknown option: %s", optptr);
 620                 rval |= option;
 621         }
 622
 623         free(optlist);
 624         return (rval);
 625 }
 626
 627 int
 628 lookup_media_word(struct ifmedia_description *desc, const char *val)
 629 {
 630
 631         for (; desc->ifmt_string != NULL; desc++)
 632                 if (strcasecmp(desc->ifmt_string, val) == 0)
 633                         return (desc->ifmt_word);
 634
 635         return (-1);
 636 }
 637
 638 static struct ifmedia_description *get_toptype_desc(int ifmw)
 639 {
 640         struct ifmedia_description *desc;
 641
 642         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 643                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 644                         break;
 645
 646         return desc;
 647 }
 648
 649 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 650 {
 651         struct ifmedia_description *desc;
 652         struct ifmedia_type_to_subtype *ttos;
 653
 654         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 655             desc->ifmt_string != NULL; desc++, ttos++)
 656                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 657                         break;
 658
 659         return ttos;
 660 }
 661
 662 static struct ifmedia_description *get_subtype_desc(int ifmw,
 663     struct ifmedia_type_to_subtype *ttos)
 664 {
 665         int i;
 666         struct ifmedia_description *desc;
 667
 668         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 669                 if (ttos->subtypes[i].alias)
 670                         continue;
 671                 for (desc = ttos->subtypes[i].desc;
 672                     desc->ifmt_string != NULL; desc++) {
 673                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 674                                 return desc;
 675                 }
 676         }
 677
 678         return NULL;
 679 }
 680
 681 static struct ifmedia_description *get_mode_desc(int ifmw,
 682     struct ifmedia_type_to_subtype *ttos)
 683 {
 684         int i;
 685         struct ifmedia_description *desc;
 686
 687         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 688                 if (ttos->modes[i].alias)
 689                         continue;
 690                 for (desc = ttos->modes[i].desc;
 691                     desc->ifmt_string != NULL; desc++) {
 692                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 693                                 return desc;
 694                 }
 695         }
 696
 697         return NULL;
 698 }
 699
 700 void
 701 print_media_word(int ifmw, int print_toptype)
 702 {
 703         struct ifmedia_description *desc;
 704         struct ifmedia_type_to_subtype *ttos;
 705         int seen_option = 0, i;
 706
 707         /* Find the top-level interface type. */
 708         desc = get_toptype_desc(ifmw);
 709         ttos = get_toptype_ttos(ifmw);
 710         if (desc->ifmt_string == NULL) {
 711                 printf("<unknown type>");
 712                 return;
 713         } else if (print_toptype) {
 714                 printf("%s", desc->ifmt_string);
 715         }
 716
 717         /*
 718          * Don't print the top-level type; it's not like we can
 719          * change it, or anything.
 720          */
 721
 722         /* Find subtype. */
 723         desc = get_subtype_desc(ifmw, ttos);
 724         if (desc == NULL) {
 725                 printf("<unknown subtype>");
 726                 return;
 727         }
 728
 729         if (print_toptype)
 730                 putchar(' ');
 731
 732         printf("%s", desc->ifmt_string);
 733
 734         if (print_toptype) {
 735                 desc = get_mode_desc(ifmw, ttos);
 736                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 737                         printf(" mode %s", desc->ifmt_string);
 738         }
 739
 740         /* Find options. */
 741         for (i = 0; ttos->options[i].desc != NULL; i++) {
 742                 if (ttos->options[i].alias)
 743                         continue;
 744                 for (desc = ttos->options[i].desc;
 745                     desc->ifmt_string != NULL; desc++) {
 746                         if (ifmw & desc->ifmt_word) {
 747                                 if (seen_option == 0)
 748                                         printf(" <");
 749                                 printf("%s%s", seen_option++ ? "," : "",
 750                                     desc->ifmt_string);
 751                         }
 752                 }
 753         }
 754         printf("%s", seen_option ? ">" : "");
 755
 756         if (print_toptype && IFM_INST(ifmw) != 0)
 757                 printf(" instance %d", IFM_INST(ifmw));
 758 }
 759
 760 void
 761 print_media_word_ifconfig(int ifmw)
 762 {
 763         struct ifmedia_description *desc;
 764         struct ifmedia_type_to_subtype *ttos;
 765         int seen_option = 0, i;
 766
 767         /* Find the top-level interface type. */
 768         desc = get_toptype_desc(ifmw);
 769         ttos = get_toptype_ttos(ifmw);
 770         if (desc->ifmt_string == NULL) {
 771                 printf("<unknown type>");
 772                 return;
 773         }
 774
 775         /*
 776          * Don't print the top-level type; it's not like we can
 777          * change it, or anything.
 778          */
 779
 780         /* Find subtype. */
 781         desc = get_subtype_desc(ifmw, ttos);
 782         if (desc == NULL) {
 783                 printf("<unknown subtype>");
 784                 return;
 785         }
 786
 787         printf("media %s", desc->ifmt_string);
 788
 789         desc = get_mode_desc(ifmw, ttos);
 790         if (desc != NULL)
 791                 printf(" mode %s", desc->ifmt_string);
 792
 793         /* Find options. */
 794         for (i = 0; ttos->options[i].desc != NULL; i++) {
 795                 if (ttos->options[i].alias)
 796                         continue;
 797                 for (desc = ttos->options[i].desc;
 798                     desc->ifmt_string != NULL; desc++) {
 799                         if (ifmw & desc->ifmt_word) {
 800                                 if (seen_option == 0)
 801                                         printf(" mediaopt ");
 802                                 printf("%s%s", seen_option++ ? "," : "",
 803                                     desc->ifmt_string);
 804                         }
 805                 }
 806         }
 807
 808         if (IFM_INST(ifmw) != 0)
 809                 printf(" instance %d", IFM_INST(ifmw));
 810 }
 811
 812 /**********************************************************************
 813  * ...until here.
 814  **********************************************************************/