sbin/ifconfig/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 #include <sys/param.h>
  68 #include <sys/ioctl.h>
  69 #include <sys/socket.h>
  70 #include <sys/sysctl.h>
  71 #include <sys/time.h>
  72
  73 #include <net/if.h>
  74 #include <net/if_dl.h>
  75 #include <net/if_types.h>
  76 #include <net/if_media.h>
  77 #include <net/route.h>
  78
  79 #include <ctype.h>
  80 #include <err.h>
  81 #include <errno.h>
  82 #include <fcntl.h>
  83 #include <stdio.h>
  84 #include <stdlib.h>
  85 #include <string.h>
  86 #include <unistd.h>
  87
  88 #include "ifconfig.h"
  89
  90 static void     domediaopt(const char *, int, int);
  91 static int      get_media_subtype(int, const char *);
  92 static int      get_media_mode(int, const char *);
  93 static int      get_media_options(int, const char *);
  94 static int      lookup_media_word(struct ifmedia_description *, const char *);
  95 static void     print_media_word(int, int);
  96 static void     print_media_word_ifconfig(int);
  97
  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         int xmedia = 1;
 115
 116         (void) memset(&ifmr, 0, sizeof(ifmr));
 117         (void) strlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 118
 119         /*
 120          * Check if interface supports extended media types.
 121          */
 122         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 123                 xmedia = 0;
 124         if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
 125                 /*
 126                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 127                  */
 128                 return;
 129         }
 130
 131         if (ifmr.ifm_count == 0) {
 132                 warnx("%s: no media types?", name);
 133                 return;
 134         }
 135
 136         media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
 137         if (media_list == NULL)
 138                 err(1, "malloc");
 139         ifmr.ifm_ulist = media_list;
 140
 141         if (xmedia) {
 142                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 143                         err(1, "SIOCGIFXMEDIA");
 144         } else {
 145                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
 146                         err(1, "SIOCGIFMEDIA");
 147         }
 148
 149         printf("\tmedia: ");
 150         print_media_word(ifmr.ifm_current, 1);
 151         if (ifmr.ifm_active != ifmr.ifm_current) {
 152                 putchar(' ');
 153                 putchar('(');
 154                 print_media_word(ifmr.ifm_active, 0);
 155                 putchar(')');
 156         }
 157
 158         putchar('\n');
 159
 160         if (ifmr.ifm_status & IFM_AVALID) {
 161                 printf("\tstatus: ");
 162                 switch (IFM_TYPE(ifmr.ifm_active)) {
 163                 case IFM_ETHER:
 164                 case IFM_ATM:
 165                         if (ifmr.ifm_status & IFM_ACTIVE)
 166                                 printf("active");
 167                         else
 168                                 printf("no carrier");
 169                         break;
 170
 171                 case IFM_IEEE80211:
 172                         if (ifmr.ifm_status & IFM_ACTIVE) {
 173                                 /* NB: only sta mode associates */
 174                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 175                                         printf("associated");
 176                                 else
 177                                         printf("running");
 178                         } else
 179                                 printf("no carrier");
 180                         break;
 181                 }
 182                 putchar('\n');
 183         }
 184
 185         if (ifmr.ifm_count > 0 && supmedia) {
 186                 printf("\tsupported media:\n");
 187                 for (i = 0; i < ifmr.ifm_count; i++) {
 188                         printf("\t\t");
 189                         print_media_word_ifconfig(media_list[i]);
 190                         putchar('\n');
 191                 }
 192         }
 193
 194         free(media_list);
 195 }
 196
 197 struct ifmediareq *
 198 ifmedia_getstate(int s)
 199 {
 200         static struct ifmediareq *ifmr = NULL;
 201         int *mwords;
 202         int xmedia = 1;
 203
 204         if (ifmr == NULL) {
 205                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 206                 if (ifmr == NULL)
 207                         err(1, "malloc");
 208
 209                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 210                 (void) strlcpy(ifmr->ifm_name, name,
 211                     sizeof(ifmr->ifm_name));
 212
 213                 ifmr->ifm_count = 0;
 214                 ifmr->ifm_ulist = NULL;
 215
 216                 /*
 217                  * We must go through the motions of reading all
 218                  * supported media because we need to know both
 219                  * the current media type and the top-level type.
 220                  */
 221
 222                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0) {
 223                         xmedia = 0;
 224                 }
 225                 if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 226                         err(1, "SIOCGIFMEDIA");
 227                 }
 228
 229                 if (ifmr->ifm_count == 0)
 230                         errx(1, "%s: no media types?", name);
 231
 232                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 233                 if (mwords == NULL)
 234                         err(1, "malloc");
 235
 236                 ifmr->ifm_ulist = mwords;
 237                 if (xmedia) {
 238                         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0)
 239                                 err(1, "SIOCGIFXMEDIA");
 240                 } else {
 241                         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 242                                 err(1, "SIOCGIFMEDIA");
 243                 }
 244         }
 245
 246         return ifmr;
 247 }
 248
 249 static void
 250 setifmediacallback(int s, void *arg)
 251 {
 252         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 253         static int did_it = 0;
 254
 255         if (!did_it) {
 256                 ifr.ifr_media = ifmr->ifm_current;
 257                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 258                         err(1, "SIOCSIFMEDIA (media)");
 259                 free(ifmr->ifm_ulist);
 260                 free(ifmr);
 261                 did_it = 1;
 262         }
 263 }
 264
 265 static void
 266 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 267 {
 268         struct ifmediareq *ifmr;
 269         int subtype;
 270
 271         ifmr = ifmedia_getstate(s);
 272
 273         /*
 274          * We are primarily concerned with the top-level type.
 275          * However, "current" may be only IFM_NONE, so we just look
 276          * for the top-level type in the first "supported type"
 277          * entry.
 278          *
 279          * (I'm assuming that all supported media types for a given
 280          * interface will be the same top-level type..)
 281          */
 282         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 283
 284         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 285         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 286             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 287
 288         ifmr->ifm_current = ifr.ifr_media;
 289         callback_register(setifmediacallback, (void *)ifmr);
 290 }
 291
 292 static void
 293 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 294 {
 295
 296         domediaopt(val, 0, s);
 297 }
 298
 299 static void
 300 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 301 {
 302
 303         domediaopt(val, 1, s);
 304 }
 305
 306 static void
 307 domediaopt(const char *val, int clear, int s)
 308 {
 309         struct ifmediareq *ifmr;
 310         int options;
 311
 312         ifmr = ifmedia_getstate(s);
 313
 314         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 315
 316         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 317         ifr.ifr_media = ifmr->ifm_current;
 318         if (clear)
 319                 ifr.ifr_media &= ~options;
 320         else {
 321                 if (options & IFM_HDX) {
 322                         ifr.ifr_media &= ~IFM_FDX;
 323                         options &= ~IFM_HDX;
 324                 }
 325                 ifr.ifr_media |= options;
 326         }
 327         ifmr->ifm_current = ifr.ifr_media;
 328         callback_register(setifmediacallback, (void *)ifmr);
 329 }
 330
 331 static void
 332 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 333 {
 334         struct ifmediareq *ifmr;
 335         int inst;
 336
 337         ifmr = ifmedia_getstate(s);
 338
 339         inst = atoi(val);
 340         if (inst < 0 || inst > (int)IFM_INST_MAX)
 341                 errx(1, "invalid media instance: %s", val);
 342
 343         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 344         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 345
 346         ifmr->ifm_current = ifr.ifr_media;
 347         callback_register(setifmediacallback, (void *)ifmr);
 348 }
 349
 350 static void
 351 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 352 {
 353         struct ifmediareq *ifmr;
 354         int mode;
 355
 356         ifmr = ifmedia_getstate(s);
 357
 358         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 359
 360         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 361         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 362
 363         ifmr->ifm_current = ifr.ifr_media;
 364         callback_register(setifmediacallback, (void *)ifmr);
 365 }
 366
 367 /**********************************************************************
 368  * A good chunk of this is duplicated from sys/net/if_media.c
 369  **********************************************************************/
 370
 371 static struct ifmedia_description ifm_type_descriptions[] =
 372     IFM_TYPE_DESCRIPTIONS;
 373
 374 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 375     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 376
 377 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 378     IFM_SUBTYPE_ETHERNET_ALIASES;
 379
 380 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 381     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 382
 383 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 384     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 385
 386 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 387     IFM_SUBTYPE_IEEE80211_ALIASES;
 388
 389 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 390     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 391
 392 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 393     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 394
 395 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 396     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 397
 398 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 399     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 400
 401 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 402     IFM_SUBTYPE_ATM_ALIASES;
 403
 404 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 405     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 406
 407 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 408     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 409
 410 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 411     IFM_SUBTYPE_SHARED_ALIASES;
 412
 413 static struct ifmedia_description ifm_shared_option_descriptions[] =
 414     IFM_SHARED_OPTION_DESCRIPTIONS;
 415
 416 static struct ifmedia_description ifm_shared_option_aliases[] =
 417     IFM_SHARED_OPTION_ALIASES;
 418
 419 struct ifmedia_type_to_subtype {
 420         struct {
 421                 struct ifmedia_description *desc;
 422                 int alias;
 423         } subtypes[5];
 424         struct {
 425                 struct ifmedia_description *desc;
 426                 int alias;
 427         } options[4];
 428         struct {
 429                 struct ifmedia_description *desc;
 430                 int alias;
 431         } modes[3];
 432 };
 433
 434 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 435 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 436         {
 437                 {
 438                         { &ifm_subtype_shared_descriptions[0], 0 },
 439                         { &ifm_subtype_shared_aliases[0], 1 },
 440                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 441                         { &ifm_subtype_ethernet_aliases[0], 1 },
 442                         { NULL, 0 },
 443                 },
 444                 {
 445                         { &ifm_shared_option_descriptions[0], 0 },
 446                         { &ifm_shared_option_aliases[0], 1 },
 447                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 448                         { NULL, 0 },
 449                 },
 450                 {
 451                         { NULL, 0 },
 452                 },
 453         },
 454         {
 455                 {
 456                         { &ifm_subtype_shared_descriptions[0], 0 },
 457                         { &ifm_subtype_shared_aliases[0], 1 },
 458                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 459                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 460                         { NULL, 0 },
 461                 },
 462                 {
 463                         { &ifm_shared_option_descriptions[0], 0 },
 464                         { &ifm_shared_option_aliases[0], 1 },
 465                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 466                         { NULL, 0 },
 467                 },
 468                 {
 469                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 470                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 471                         { NULL, 0 },
 472                 },
 473         },
 474         {
 475                 {
 476                         { &ifm_subtype_shared_descriptions[0], 0 },
 477                         { &ifm_subtype_shared_aliases[0], 1 },
 478                         { &ifm_subtype_atm_descriptions[0], 0 },
 479                         { &ifm_subtype_atm_aliases[0], 1 },
 480                         { NULL, 0 },
 481                 },
 482                 {
 483                         { &ifm_shared_option_descriptions[0], 0 },
 484                         { &ifm_shared_option_aliases[0], 1 },
 485                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 486                         { NULL, 0 },
 487                 },
 488                 {
 489                         { NULL, 0 },
 490                 },
 491         },
 492 };
 493
 494 static int
 495 get_media_subtype(int type, const char *val)
 496 {
 497         struct ifmedia_description *desc;
 498         struct ifmedia_type_to_subtype *ttos;
 499         int rval, i;
 500
 501         /* Find the top-level interface type. */
 502         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 503             desc->ifmt_string != NULL; desc++, ttos++)
 504                 if (type == desc->ifmt_word)
 505                         break;
 506         if (desc->ifmt_string == NULL)
 507                 errx(1, "unknown media type 0x%x", type);
 508
 509         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 510                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 511                 if (rval != -1)
 512                         return (rval);
 513         }
 514         errx(1, "unknown media subtype: %s", val);
 515         /*NOTREACHED*/
 516 }
 517
 518 static int
 519 get_media_mode(int type, const char *val)
 520 {
 521         struct ifmedia_description *desc;
 522         struct ifmedia_type_to_subtype *ttos;
 523         int rval, i;
 524
 525         /* Find the top-level interface type. */
 526         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 527             desc->ifmt_string != NULL; desc++, ttos++)
 528                 if (type == desc->ifmt_word)
 529                         break;
 530         if (desc->ifmt_string == NULL)
 531                 errx(1, "unknown media mode 0x%x", type);
 532
 533         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 534                 rval = lookup_media_word(ttos->modes[i].desc, val);
 535                 if (rval != -1)
 536                         return (rval);
 537         }
 538         return -1;
 539 }
 540
 541 static int
 542 get_media_options(int type, const char *val)
 543 {
 544         struct ifmedia_description *desc;
 545         struct ifmedia_type_to_subtype *ttos;
 546         char *optlist, *optptr;
 547         int option = 0, i, rval = 0;
 548
 549         /* We muck with the string, so copy it. */
 550         optlist = strdup(val);
 551         if (optlist == NULL)
 552                 err(1, "strdup");
 553
 554         /* Find the top-level interface type. */
 555         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 556             desc->ifmt_string != NULL; desc++, ttos++)
 557                 if (type == desc->ifmt_word)
 558                         break;
 559         if (desc->ifmt_string == NULL)
 560                 errx(1, "unknown media type 0x%x", type);
 561
 562         /*
 563          * Look up the options in the user-provided comma-separated
 564          * list.
 565          */
 566         optptr = optlist;
 567         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 568                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 569                         option = lookup_media_word(ttos->options[i].desc, optptr);
 570                         if (option != -1)
 571                                 break;
 572                 }
 573                 if (option == 0)
 574                         errx(1, "unknown option: %s", optptr);
 575                 rval |= option;
 576         }
 577
 578         free(optlist);
 579         return (rval);
 580 }
 581
 582 static int
 583 lookup_media_word(struct ifmedia_description *desc, const char *val)
 584 {
 585
 586         for (; desc->ifmt_string != NULL; desc++)
 587                 if (strcasecmp(desc->ifmt_string, val) == 0)
 588                         return (desc->ifmt_word);
 589
 590         return (-1);
 591 }
 592
 593 static struct ifmedia_description *get_toptype_desc(int ifmw)
 594 {
 595         struct ifmedia_description *desc;
 596
 597         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 598                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 599                         break;
 600
 601         return desc;
 602 }
 603
 604 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 605 {
 606         struct ifmedia_description *desc;
 607         struct ifmedia_type_to_subtype *ttos;
 608
 609         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 610             desc->ifmt_string != NULL; desc++, ttos++)
 611                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 612                         break;
 613
 614         return ttos;
 615 }
 616
 617 static struct ifmedia_description *get_subtype_desc(int ifmw,
 618     struct ifmedia_type_to_subtype *ttos)
 619 {
 620         int i;
 621         struct ifmedia_description *desc;
 622
 623         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 624                 if (ttos->subtypes[i].alias)
 625                         continue;
 626                 for (desc = ttos->subtypes[i].desc;
 627                     desc->ifmt_string != NULL; desc++) {
 628                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 629                                 return desc;
 630                 }
 631         }
 632
 633         return NULL;
 634 }
 635
 636 static struct ifmedia_description *get_mode_desc(int ifmw,
 637     struct ifmedia_type_to_subtype *ttos)
 638 {
 639         int i;
 640         struct ifmedia_description *desc;
 641
 642         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 643                 if (ttos->modes[i].alias)
 644                         continue;
 645                 for (desc = ttos->modes[i].desc;
 646                     desc->ifmt_string != NULL; desc++) {
 647                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 648                                 return desc;
 649                 }
 650         }
 651
 652         return NULL;
 653 }
 654
 655 static void
 656 print_media_word(int ifmw, int print_toptype)
 657 {
 658         struct ifmedia_description *desc;
 659         struct ifmedia_type_to_subtype *ttos;
 660         int seen_option = 0, i;
 661
 662         /* Find the top-level interface type. */
 663         desc = get_toptype_desc(ifmw);
 664         ttos = get_toptype_ttos(ifmw);
 665         if (desc->ifmt_string == NULL) {
 666                 printf("<unknown type>");
 667                 return;
 668         } else if (print_toptype) {
 669                 printf("%s", desc->ifmt_string);
 670         }
 671
 672         /*
 673          * Don't print the top-level type; it's not like we can
 674          * change it, or anything.
 675          */
 676
 677         /* Find subtype. */
 678         desc = get_subtype_desc(ifmw, ttos);
 679         if (desc == NULL) {
 680                 printf("<unknown subtype>");
 681                 return;
 682         }
 683
 684         if (print_toptype)
 685                 putchar(' ');
 686
 687         printf("%s", desc->ifmt_string);
 688
 689         if (print_toptype) {
 690                 desc = get_mode_desc(ifmw, ttos);
 691                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 692                         printf(" mode %s", desc->ifmt_string);
 693         }
 694
 695         /* Find options. */
 696         for (i = 0; ttos->options[i].desc != NULL; i++) {
 697                 if (ttos->options[i].alias)
 698                         continue;
 699                 for (desc = ttos->options[i].desc;
 700                     desc->ifmt_string != NULL; desc++) {
 701                         if (ifmw & desc->ifmt_word) {
 702                                 if (seen_option == 0)
 703                                         printf(" <");
 704                                 printf("%s%s", seen_option++ ? "," : "",
 705                                     desc->ifmt_string);
 706                         }
 707                 }
 708         }
 709         printf("%s", seen_option ? ">" : "");
 710
 711         if (print_toptype && IFM_INST(ifmw) != 0)
 712                 printf(" instance %d", IFM_INST(ifmw));
 713 }
 714
 715 static void
 716 print_media_word_ifconfig(int ifmw)
 717 {
 718         struct ifmedia_description *desc;
 719         struct ifmedia_type_to_subtype *ttos;
 720         int seen_option = 0, i;
 721
 722         /* Find the top-level interface type. */
 723         desc = get_toptype_desc(ifmw);
 724         ttos = get_toptype_ttos(ifmw);
 725         if (desc->ifmt_string == NULL) {
 726                 printf("<unknown type>");
 727                 return;
 728         }
 729
 730         /*
 731          * Don't print the top-level type; it's not like we can
 732          * change it, or anything.
 733          */
 734
 735         /* Find subtype. */
 736         desc = get_subtype_desc(ifmw, ttos);
 737         if (desc == NULL) {
 738                 printf("<unknown subtype>");
 739                 return;
 740         }
 741
 742         printf("media %s", desc->ifmt_string);
 743
 744         desc = get_mode_desc(ifmw, ttos);
 745         if (desc != NULL)
 746                 printf(" mode %s", desc->ifmt_string);
 747
 748         /* Find options. */
 749         for (i = 0; ttos->options[i].desc != NULL; i++) {
 750                 if (ttos->options[i].alias)
 751                         continue;
 752                 for (desc = ttos->options[i].desc;
 753                     desc->ifmt_string != NULL; desc++) {
 754                         if (ifmw & desc->ifmt_word) {
 755                                 if (seen_option == 0)
 756                                         printf(" mediaopt ");
 757                                 printf("%s%s", seen_option++ ? "," : "",
 758                                     desc->ifmt_string);
 759                         }
 760                 }
 761         }
 762
 763         if (IFM_INST(ifmw) != 0)
 764                 printf(" instance %d", IFM_INST(ifmw));
 765 }
 766
 767 /**********************************************************************
 768  * ...until here.
 769  **********************************************************************/
 770
 771 static struct cmd media_cmds[] = {
 772         DEF_CMD_ARG("media",    setmedia),
 773         DEF_CMD_ARG("mode",     setmediamode),
 774         DEF_CMD_ARG("mediaopt", setmediaopt),
 775         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 776         DEF_CMD_ARG("inst",     setmediainst),
 777         DEF_CMD_ARG("instance", setmediainst),
 778 };
 779 static struct afswtch af_media = {
 780         .af_name        = "af_media",
 781         .af_af          = AF_UNSPEC,
 782         .af_other_status = media_status,
 783 };
 784
 785 static __constructor void
 786 ifmedia_ctor(void)
 787 {
 788         size_t i;
 789
 790         for (i = 0; i < nitems(media_cmds);  i++)
 791                 cmd_register(&media_cmds[i]);
 792         af_register(&af_media);
 793 }