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_tokenring_descriptions[] =
 384     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 385
 386 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 387     IFM_SUBTYPE_TOKENRING_ALIASES;
 388
 389 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 390     IFM_SUBTYPE_TOKENRING_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 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 402     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 403
 404 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_ieee80211_descriptions[0], 0 },
 486                         { &ifm_subtype_ieee80211_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_ieee80211_option_descriptions[0], 0 },
 493                         { NULL, 0 },
 494                 },
 495                 {
 496                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 497                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 498                         { NULL, 0 },
 499                 },
 500         },
 501         {
 502                 {
 503                         { &ifm_subtype_shared_descriptions[0], 0 },
 504                         { &ifm_subtype_shared_aliases[0], 1 },
 505                         { &ifm_subtype_atm_descriptions[0], 0 },
 506                         { &ifm_subtype_atm_aliases[0], 1 },
 507                         { NULL, 0 },
 508                 },
 509                 {
 510                         { &ifm_shared_option_descriptions[0], 0 },
 511                         { &ifm_shared_option_aliases[0], 1 },
 512                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 513                         { NULL, 0 },
 514                 },
 515                 {
 516                         { NULL, 0 },
 517                 },
 518         },
 519 };
 520
 521 static int
 522 get_media_subtype(int type, const char *val)
 523 {
 524         struct ifmedia_description *desc;
 525         struct ifmedia_type_to_subtype *ttos;
 526         int rval, i;
 527
 528         /* Find the top-level interface type. */
 529         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 530             desc->ifmt_string != NULL; desc++, ttos++)
 531                 if (type == desc->ifmt_word)
 532                         break;
 533         if (desc->ifmt_string == NULL)
 534                 errx(1, "unknown media type 0x%x", type);
 535
 536         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 537                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 538                 if (rval != -1)
 539                         return (rval);
 540         }
 541         errx(1, "unknown media subtype: %s", val);
 542         /*NOTREACHED*/
 543 }
 544
 545 static int
 546 get_media_mode(int type, const char *val)
 547 {
 548         struct ifmedia_description *desc;
 549         struct ifmedia_type_to_subtype *ttos;
 550         int rval, i;
 551
 552         /* Find the top-level interface type. */
 553         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 554             desc->ifmt_string != NULL; desc++, ttos++)
 555                 if (type == desc->ifmt_word)
 556                         break;
 557         if (desc->ifmt_string == NULL)
 558                 errx(1, "unknown media mode 0x%x", type);
 559
 560         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 561                 rval = lookup_media_word(ttos->modes[i].desc, val);
 562                 if (rval != -1)
 563                         return (rval);
 564         }
 565         return -1;
 566 }
 567
 568 static int
 569 get_media_options(int type, const char *val)
 570 {
 571         struct ifmedia_description *desc;
 572         struct ifmedia_type_to_subtype *ttos;
 573         char *optlist, *optptr;
 574         int option = 0, i, rval = 0;
 575
 576         /* We muck with the string, so copy it. */
 577         optlist = strdup(val);
 578         if (optlist == NULL)
 579                 err(1, "strdup");
 580
 581         /* Find the top-level interface type. */
 582         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 583             desc->ifmt_string != NULL; desc++, ttos++)
 584                 if (type == desc->ifmt_word)
 585                         break;
 586         if (desc->ifmt_string == NULL)
 587                 errx(1, "unknown media type 0x%x", type);
 588
 589         /*
 590          * Look up the options in the user-provided comma-separated
 591          * list.
 592          */
 593         optptr = optlist;
 594         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 595                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 596                         option = lookup_media_word(ttos->options[i].desc, optptr);
 597                         if (option != -1)
 598                                 break;
 599                 }
 600                 if (option == 0)
 601                         errx(1, "unknown option: %s", optptr);
 602                 rval |= option;
 603         }
 604
 605         free(optlist);
 606         return (rval);
 607 }
 608
 609 static int
 610 lookup_media_word(struct ifmedia_description *desc, const char *val)
 611 {
 612
 613         for (; desc->ifmt_string != NULL; desc++)
 614                 if (strcasecmp(desc->ifmt_string, val) == 0)
 615                         return (desc->ifmt_word);
 616
 617         return (-1);
 618 }
 619
 620 static struct ifmedia_description *get_toptype_desc(int ifmw)
 621 {
 622         struct ifmedia_description *desc;
 623
 624         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 625                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 626                         break;
 627
 628         return desc;
 629 }
 630
 631 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 632 {
 633         struct ifmedia_description *desc;
 634         struct ifmedia_type_to_subtype *ttos;
 635
 636         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 637             desc->ifmt_string != NULL; desc++, ttos++)
 638                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 639                         break;
 640
 641         return ttos;
 642 }
 643
 644 static struct ifmedia_description *get_subtype_desc(int ifmw,
 645     struct ifmedia_type_to_subtype *ttos)
 646 {
 647         int i;
 648         struct ifmedia_description *desc;
 649
 650         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 651                 if (ttos->subtypes[i].alias)
 652                         continue;
 653                 for (desc = ttos->subtypes[i].desc;
 654                     desc->ifmt_string != NULL; desc++) {
 655                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 656                                 return desc;
 657                 }
 658         }
 659
 660         return NULL;
 661 }
 662
 663 static struct ifmedia_description *get_mode_desc(int ifmw,
 664     struct ifmedia_type_to_subtype *ttos)
 665 {
 666         int i;
 667         struct ifmedia_description *desc;
 668
 669         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 670                 if (ttos->modes[i].alias)
 671                         continue;
 672                 for (desc = ttos->modes[i].desc;
 673                     desc->ifmt_string != NULL; desc++) {
 674                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 675                                 return desc;
 676                 }
 677         }
 678
 679         return NULL;
 680 }
 681
 682 static void
 683 print_media_word(int ifmw, int print_toptype)
 684 {
 685         struct ifmedia_description *desc;
 686         struct ifmedia_type_to_subtype *ttos;
 687         int seen_option = 0, i;
 688
 689         /* Find the top-level interface type. */
 690         desc = get_toptype_desc(ifmw);
 691         ttos = get_toptype_ttos(ifmw);
 692         if (desc->ifmt_string == NULL) {
 693                 printf("<unknown type>");
 694                 return;
 695         } else if (print_toptype) {
 696                 printf("%s", desc->ifmt_string);
 697         }
 698
 699         /*
 700          * Don't print the top-level type; it's not like we can
 701          * change it, or anything.
 702          */
 703
 704         /* Find subtype. */
 705         desc = get_subtype_desc(ifmw, ttos);
 706         if (desc == NULL) {
 707                 printf("<unknown subtype>");
 708                 return;
 709         }
 710
 711         if (print_toptype)
 712                 putchar(' ');
 713
 714         printf("%s", desc->ifmt_string);
 715
 716         if (print_toptype) {
 717                 desc = get_mode_desc(ifmw, ttos);
 718                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 719                         printf(" mode %s", desc->ifmt_string);
 720         }
 721
 722         /* Find options. */
 723         for (i = 0; ttos->options[i].desc != NULL; i++) {
 724                 if (ttos->options[i].alias)
 725                         continue;
 726                 for (desc = ttos->options[i].desc;
 727                     desc->ifmt_string != NULL; desc++) {
 728                         if (ifmw & desc->ifmt_word) {
 729                                 if (seen_option == 0)
 730                                         printf(" <");
 731                                 printf("%s%s", seen_option++ ? "," : "",
 732                                     desc->ifmt_string);
 733                         }
 734                 }
 735         }
 736         printf("%s", seen_option ? ">" : "");
 737
 738         if (print_toptype && IFM_INST(ifmw) != 0)
 739                 printf(" instance %d", IFM_INST(ifmw));
 740 }
 741
 742 static void
 743 print_media_word_ifconfig(int ifmw)
 744 {
 745         struct ifmedia_description *desc;
 746         struct ifmedia_type_to_subtype *ttos;
 747         int seen_option = 0, i;
 748
 749         /* Find the top-level interface type. */
 750         desc = get_toptype_desc(ifmw);
 751         ttos = get_toptype_ttos(ifmw);
 752         if (desc->ifmt_string == NULL) {
 753                 printf("<unknown type>");
 754                 return;
 755         }
 756
 757         /*
 758          * Don't print the top-level type; it's not like we can
 759          * change it, or anything.
 760          */
 761
 762         /* Find subtype. */
 763         desc = get_subtype_desc(ifmw, ttos);
 764         if (desc == NULL) {
 765                 printf("<unknown subtype>");
 766                 return;
 767         }
 768
 769         printf("media %s", desc->ifmt_string);
 770
 771         desc = get_mode_desc(ifmw, ttos);
 772         if (desc != NULL)
 773                 printf(" mode %s", desc->ifmt_string);
 774
 775         /* Find options. */
 776         for (i = 0; ttos->options[i].desc != NULL; i++) {
 777                 if (ttos->options[i].alias)
 778                         continue;
 779                 for (desc = ttos->options[i].desc;
 780                     desc->ifmt_string != NULL; desc++) {
 781                         if (ifmw & desc->ifmt_word) {
 782                                 if (seen_option == 0)
 783                                         printf(" mediaopt ");
 784                                 printf("%s%s", seen_option++ ? "," : "",
 785                                     desc->ifmt_string);
 786                         }
 787                 }
 788         }
 789
 790         if (IFM_INST(ifmw) != 0)
 791                 printf(" instance %d", IFM_INST(ifmw));
 792 }
 793
 794 /**********************************************************************
 795  * ...until here.
 796  **********************************************************************/
 797
 798 static struct cmd media_cmds[] = {
 799         DEF_CMD_ARG("media",    setmedia),
 800         DEF_CMD_ARG("mode",     setmediamode),
 801         DEF_CMD_ARG("mediaopt", setmediaopt),
 802         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 803         DEF_CMD_ARG("inst",     setmediainst),
 804         DEF_CMD_ARG("instance", setmediainst),
 805 };
 806 static struct afswtch af_media = {
 807         .af_name        = "af_media",
 808         .af_af          = AF_UNSPEC,
 809         .af_other_status = media_status,
 810 };
 811
 812 static __constructor void
 813 ifmedia_ctor(void)
 814 {
 815         size_t i;
 816
 817         for (i = 0; i < nitems(media_cmds);  i++)
 818                 cmd_register(&media_cmds[i]);
 819         af_register(&af_media);
 820 }