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_IEEE80211:
 163                         if (ifmr.ifm_status & IFM_ACTIVE) {
 164                                 /* NB: only sta mode associates */
 165                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 166                                         printf("associated");
 167                                 else
 168                                         printf("running");
 169                         } else
 170                                 printf("no carrier");
 171                         break;
 172                 }
 173                 putchar('\n');
 174         }
 175
 176         if (ifmr.ifm_count > 0 && supmedia) {
 177                 printf("\tsupported media:\n");
 178                 for (i = 0; i < ifmr.ifm_count; i++) {
 179                         printf("\t\t");
 180                         print_media_word_ifconfig(media_list[i]);
 181                         putchar('\n');
 182                 }
 183         }
 184
 185         free(media_list);
 186 }
 187
 188 struct ifmediareq *
 189 ifmedia_getstate(int s)
 190 {
 191         static struct ifmediareq *ifmr = NULL;
 192         int *mwords;
 193
 194         if (ifmr == NULL) {
 195                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 196                 if (ifmr == NULL)
 197                         err(1, "malloc");
 198
 199                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 200                 (void) strncpy(ifmr->ifm_name, name,
 201                     sizeof(ifmr->ifm_name));
 202
 203                 ifmr->ifm_count = 0;
 204                 ifmr->ifm_ulist = NULL;
 205
 206                 /*
 207                  * We must go through the motions of reading all
 208                  * supported media because we need to know both
 209                  * the current media type and the top-level type.
 210                  */
 211
 212                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 213                         err(1, "SIOCGIFMEDIA");
 214                 }
 215
 216                 if (ifmr->ifm_count == 0)
 217                         errx(1, "%s: no media types?", name);
 218
 219                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 220                 if (mwords == NULL)
 221                         err(1, "malloc");
 222
 223                 ifmr->ifm_ulist = mwords;
 224                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 225                         err(1, "SIOCGIFMEDIA");
 226         }
 227
 228         return ifmr;
 229 }
 230
 231 static void
 232 setifmediacallback(int s, void *arg)
 233 {
 234         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 235         static int did_it = 0;
 236
 237         if (!did_it) {
 238                 ifr.ifr_media = ifmr->ifm_current;
 239                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 240                         err(1, "SIOCSIFMEDIA (media)");
 241                 free(ifmr->ifm_ulist);
 242                 free(ifmr);
 243                 did_it = 1;
 244         }
 245 }
 246
 247 static void
 248 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 249 {
 250         struct ifmediareq *ifmr;
 251         int subtype;
 252
 253         ifmr = ifmedia_getstate(s);
 254
 255         /*
 256          * We are primarily concerned with the top-level type.
 257          * However, "current" may be only IFM_NONE, so we just look
 258          * for the top-level type in the first "supported type"
 259          * entry.
 260          *
 261          * (I'm assuming that all supported media types for a given
 262          * interface will be the same top-level type..)
 263          */
 264         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 265
 266         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 267         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 268             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 269
 270         ifmr->ifm_current = ifr.ifr_media;
 271         callback_register(setifmediacallback, (void *)ifmr);
 272 }
 273
 274 static void
 275 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 276 {
 277
 278         domediaopt(val, 0, s);
 279 }
 280
 281 static void
 282 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 283 {
 284
 285         domediaopt(val, 1, s);
 286 }
 287
 288 static void
 289 domediaopt(const char *val, int clear, int s)
 290 {
 291         struct ifmediareq *ifmr;
 292         int options;
 293
 294         ifmr = ifmedia_getstate(s);
 295
 296         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 297
 298         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 299         ifr.ifr_media = ifmr->ifm_current;
 300         if (clear)
 301                 ifr.ifr_media &= ~options;
 302         else {
 303                 if (options & IFM_HDX) {
 304                         ifr.ifr_media &= ~IFM_FDX;
 305                         options &= ~IFM_HDX;
 306                 }
 307                 ifr.ifr_media |= options;
 308         }
 309         ifmr->ifm_current = ifr.ifr_media;
 310         callback_register(setifmediacallback, (void *)ifmr);
 311 }
 312
 313 static void
 314 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 315 {
 316         struct ifmediareq *ifmr;
 317         int inst;
 318
 319         ifmr = ifmedia_getstate(s);
 320
 321         inst = atoi(val);
 322         if (inst < 0 || inst > (int)IFM_INST_MAX)
 323                 errx(1, "invalid media instance: %s", val);
 324
 325         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 326         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 327
 328         ifmr->ifm_current = ifr.ifr_media;
 329         callback_register(setifmediacallback, (void *)ifmr);
 330 }
 331
 332 static void
 333 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 334 {
 335         struct ifmediareq *ifmr;
 336         int mode;
 337
 338         ifmr = ifmedia_getstate(s);
 339
 340         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 341
 342         strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 343         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 344
 345         ifmr->ifm_current = ifr.ifr_media;
 346         callback_register(setifmediacallback, (void *)ifmr);
 347 }
 348 #endif
 349
 350 /**********************************************************************
 351  * A good chunk of this is duplicated from sys/net/ifmedia.c
 352  **********************************************************************/
 353
 354 static struct ifmedia_description ifm_type_descriptions[] =
 355     IFM_TYPE_DESCRIPTIONS;
 356
 357 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 358     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 359
 360 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 361     IFM_SUBTYPE_ETHERNET_ALIASES;
 362
 363 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 364     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 365
 366 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 367     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 368
 369 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 370     IFM_SUBTYPE_IEEE80211_ALIASES;
 371
 372 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 373     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 374
 375 static struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 376     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 377
 378 static struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 379     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 380
 381 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 382     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 383
 384 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 385     IFM_SUBTYPE_ATM_ALIASES;
 386
 387 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 388     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 389
 390 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 391     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 392
 393 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 394     IFM_SUBTYPE_SHARED_ALIASES;
 395
 396 static struct ifmedia_description ifm_shared_option_descriptions[] =
 397     IFM_SHARED_OPTION_DESCRIPTIONS;
 398
 399 static struct ifmedia_description ifm_shared_option_aliases[] =
 400     IFM_SHARED_OPTION_ALIASES;
 401
 402 struct ifmedia_type_to_subtype {
 403         struct {
 404                 struct ifmedia_description *desc;
 405                 int alias;
 406         } subtypes[5];
 407         struct {
 408                 struct ifmedia_description *desc;
 409                 int alias;
 410         } options[4];
 411         struct {
 412                 struct ifmedia_description *desc;
 413                 int alias;
 414         } modes[3];
 415 };
 416
 417 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 418 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 419         {
 420                 {
 421                         { &ifm_subtype_shared_descriptions[0], 0 },
 422                         { &ifm_subtype_shared_aliases[0], 1 },
 423                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 424                         { &ifm_subtype_ethernet_aliases[0], 1 },
 425                         { NULL, 0 },
 426                 },
 427                 {
 428                         { &ifm_shared_option_descriptions[0], 0 },
 429                         { &ifm_shared_option_aliases[0], 1 },
 430                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 431                         { NULL, 0 },
 432                 },
 433                 {
 434                         { NULL, 0 },
 435                 },
 436         },
 437         {
 438                 {
 439                         { &ifm_subtype_shared_descriptions[0], 0 },
 440                         { &ifm_subtype_shared_aliases[0], 1 },
 441                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 442                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 443                         { NULL, 0 },
 444                 },
 445                 {
 446                         { &ifm_shared_option_descriptions[0], 0 },
 447                         { &ifm_shared_option_aliases[0], 1 },
 448                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 449                         { NULL, 0 },
 450                 },
 451                 {
 452                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 453                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 454                         { NULL, 0 },
 455                 },
 456         },
 457         {
 458                 {
 459                         { &ifm_subtype_shared_descriptions[0], 0 },
 460                         { &ifm_subtype_shared_aliases[0], 1 },
 461                         { &ifm_subtype_atm_descriptions[0], 0 },
 462                         { &ifm_subtype_atm_aliases[0], 1 },
 463                         { NULL, 0 },
 464                 },
 465                 {
 466                         { &ifm_shared_option_descriptions[0], 0 },
 467                         { &ifm_shared_option_aliases[0], 1 },
 468                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 469                         { NULL, 0 },
 470                 },
 471                 {
 472                         { NULL, 0 },
 473                 },
 474         },
 475 };
 476
 477 int
 478 get_media_subtype(int type, const char *val)
 479 {
 480         struct ifmedia_description *desc;
 481         struct ifmedia_type_to_subtype *ttos;
 482         int rval, i;
 483
 484         /* Find the top-level interface type. */
 485         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 486             desc->ifmt_string != NULL; desc++, ttos++)
 487                 if (type == desc->ifmt_word)
 488                         break;
 489         if (desc->ifmt_string == NULL)
 490                 errx(1, "unknown media type 0x%x", type);
 491
 492         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 493                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 494                 if (rval != -1)
 495                         return (rval);
 496         }
 497         errx(1, "unknown media subtype: %s", val);
 498         /*NOTREACHED*/
 499 }
 500
 501 int
 502 get_media_mode(int type, const char *val)
 503 {
 504         struct ifmedia_description *desc;
 505         struct ifmedia_type_to_subtype *ttos;
 506         int rval, i;
 507
 508         /* Find the top-level interface type. */
 509         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 510             desc->ifmt_string != NULL; desc++, ttos++)
 511                 if (type == desc->ifmt_word)
 512                         break;
 513         if (desc->ifmt_string == NULL)
 514                 errx(1, "unknown media mode 0x%x", type);
 515
 516         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 517                 rval = lookup_media_word(ttos->modes[i].desc, val);
 518                 if (rval != -1)
 519                         return (rval);
 520         }
 521         return -1;
 522 }
 523
 524 int
 525 get_media_options(int type, const char *val)
 526 {
 527         struct ifmedia_description *desc;
 528         struct ifmedia_type_to_subtype *ttos;
 529         char *optlist, *optptr;
 530         int option = 0, i, rval = 0;
 531
 532         /* We muck with the string, so copy it. */
 533         optlist = strdup(val);
 534         if (optlist == NULL)
 535                 err(1, "strdup");
 536
 537         /* Find the top-level interface type. */
 538         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 539             desc->ifmt_string != NULL; desc++, ttos++)
 540                 if (type == desc->ifmt_word)
 541                         break;
 542         if (desc->ifmt_string == NULL)
 543                 errx(1, "unknown media type 0x%x", type);
 544
 545         /*
 546          * Look up the options in the user-provided comma-separated
 547          * list.
 548          */
 549         optptr = optlist;
 550         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 551                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 552                         option = lookup_media_word(ttos->options[i].desc, optptr);
 553                         if (option != -1)
 554                                 break;
 555                 }
 556                 if (option == 0)
 557                         errx(1, "unknown option: %s", optptr);
 558                 rval |= option;
 559         }
 560
 561         free(optlist);
 562         return (rval);
 563 }
 564
 565 int
 566 lookup_media_word(struct ifmedia_description *desc, const char *val)
 567 {
 568
 569         for (; desc->ifmt_string != NULL; desc++)
 570                 if (strcasecmp(desc->ifmt_string, val) == 0)
 571                         return (desc->ifmt_word);
 572
 573         return (-1);
 574 }
 575
 576 static struct ifmedia_description *get_toptype_desc(int ifmw)
 577 {
 578         struct ifmedia_description *desc;
 579
 580         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 581                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 582                         break;
 583
 584         return desc;
 585 }
 586
 587 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 588 {
 589         struct ifmedia_description *desc;
 590         struct ifmedia_type_to_subtype *ttos;
 591
 592         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 593             desc->ifmt_string != NULL; desc++, ttos++)
 594                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 595                         break;
 596
 597         return ttos;
 598 }
 599
 600 static struct ifmedia_description *get_subtype_desc(int ifmw,
 601     struct ifmedia_type_to_subtype *ttos)
 602 {
 603         int i;
 604         struct ifmedia_description *desc;
 605
 606         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 607                 if (ttos->subtypes[i].alias)
 608                         continue;
 609                 for (desc = ttos->subtypes[i].desc;
 610                     desc->ifmt_string != NULL; desc++) {
 611                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 612                                 return desc;
 613                 }
 614         }
 615
 616         return NULL;
 617 }
 618
 619 static struct ifmedia_description *get_mode_desc(int ifmw,
 620     struct ifmedia_type_to_subtype *ttos)
 621 {
 622         int i;
 623         struct ifmedia_description *desc;
 624
 625         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 626                 if (ttos->modes[i].alias)
 627                         continue;
 628                 for (desc = ttos->modes[i].desc;
 629                     desc->ifmt_string != NULL; desc++) {
 630                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 631                                 return desc;
 632                 }
 633         }
 634
 635         return NULL;
 636 }
 637
 638 void
 639 print_media_word(int ifmw, int print_toptype)
 640 {
 641         struct ifmedia_description *desc;
 642         struct ifmedia_type_to_subtype *ttos;
 643         int seen_option = 0, i;
 644
 645         /* Find the top-level interface type. */
 646         desc = get_toptype_desc(ifmw);
 647         ttos = get_toptype_ttos(ifmw);
 648         if (desc->ifmt_string == NULL) {
 649                 printf("<unknown type>");
 650                 return;
 651         } else if (print_toptype) {
 652                 printf("%s", desc->ifmt_string);
 653         }
 654
 655         /*
 656          * Don't print the top-level type; it's not like we can
 657          * change it, or anything.
 658          */
 659
 660         /* Find subtype. */
 661         desc = get_subtype_desc(ifmw, ttos);
 662         if (desc == NULL) {
 663                 printf("<unknown subtype>");
 664                 return;
 665         }
 666
 667         if (print_toptype)
 668                 putchar(' ');
 669
 670         printf("%s", desc->ifmt_string);
 671
 672         if (print_toptype) {
 673                 desc = get_mode_desc(ifmw, ttos);
 674                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 675                         printf(" mode %s", desc->ifmt_string);
 676         }
 677
 678         /* Find options. */
 679         for (i = 0; ttos->options[i].desc != NULL; i++) {
 680                 if (ttos->options[i].alias)
 681                         continue;
 682                 for (desc = ttos->options[i].desc;
 683                     desc->ifmt_string != NULL; desc++) {
 684                         if (ifmw & desc->ifmt_word) {
 685                                 if (seen_option == 0)
 686                                         printf(" <");
 687                                 printf("%s%s", seen_option++ ? "," : "",
 688                                     desc->ifmt_string);
 689                         }
 690                 }
 691         }
 692         printf("%s", seen_option ? ">" : "");
 693
 694         if (print_toptype && IFM_INST(ifmw) != 0)
 695                 printf(" instance %d", IFM_INST(ifmw));
 696 }
 697
 698 void
 699 print_media_word_ifconfig(int ifmw)
 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         }
 712
 713         /*
 714          * Don't print the top-level type; it's not like we can
 715          * change it, or anything.
 716          */
 717
 718         /* Find subtype. */
 719         desc = get_subtype_desc(ifmw, ttos);
 720         if (desc == NULL) {
 721                 printf("<unknown subtype>");
 722                 return;
 723         }
 724
 725         printf("media %s", desc->ifmt_string);
 726
 727         desc = get_mode_desc(ifmw, ttos);
 728         if (desc != NULL)
 729                 printf(" mode %s", desc->ifmt_string);
 730
 731         /* Find options. */
 732         for (i = 0; ttos->options[i].desc != NULL; i++) {
 733                 if (ttos->options[i].alias)
 734                         continue;
 735                 for (desc = ttos->options[i].desc;
 736                     desc->ifmt_string != NULL; desc++) {
 737                         if (ifmw & desc->ifmt_word) {
 738                                 if (seen_option == 0)
 739                                         printf(" mediaopt ");
 740                                 printf("%s%s", seen_option++ ? "," : "",
 741                                     desc->ifmt_string);
 742                         }
 743                 }
 744         }
 745
 746         if (IFM_INST(ifmw) != 0)
 747                 printf(" instance %d", IFM_INST(ifmw));
 748 }
 749
 750 /**********************************************************************
 751  * ...until here.
 752  **********************************************************************/