sbin/ifconfig/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD$ */
   3
   4 /*
   5  * Copyright (c) 1997 Jason R. Thorpe.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed for the NetBSD Project
  19  *      by Jason R. Thorpe.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /*
  37  * Copyright (c) 1983, 1993
  38  *      The Regents of the University of California.  All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  * 3. All advertising materials mentioning features or use of this software
  49  *    must display the following acknowledgement:
  50  *      This product includes software developed by the University of
  51  *      California, Berkeley and its contributors.
  52  * 4. Neither the name of the University nor the names of its contributors
  53  *    may be used to endorse or promote products derived from this software
  54  *    without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  57  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  58  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  59  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  60  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  61  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  62  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  63  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  64  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  65  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  66  * SUCH DAMAGE.
  67  */
  68
  69 #include <sys/param.h>
  70 #include <sys/ioctl.h>
  71 #include <sys/socket.h>
  72 #include <sys/sysctl.h>
  73 #include <sys/time.h>
  74
  75 #include <net/if.h>
  76 #include <net/if_dl.h>
  77 #include <net/if_types.h>
  78 #include <net/if_media.h>
  79 #include <net/route.h>
  80
  81 #include <ctype.h>
  82 #include <err.h>
  83 #include <errno.h>
  84 #include <fcntl.h>
  85 #include <stdio.h>
  86 #include <stdlib.h>
  87 #include <string.h>
  88 #include <unistd.h>
  89
  90 #include "ifconfig.h"
  91
  92 static void     domediaopt(const char *, int, int);
  93 static int      get_media_subtype(int, const char *);
  94 static int      get_media_mode(int, const char *);
  95 static int      get_media_options(int, const char *);
  96 static int      lookup_media_word(struct ifmedia_description *, const char *);
  97 static void     print_media_word(int, int);
  98 static void     print_media_word_ifconfig(int);
  99
 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
 357 /**********************************************************************
 358  * A good chunk of this is duplicated from sys/net/ifmedia.c
 359  **********************************************************************/
 360
 361 static struct ifmedia_description ifm_type_descriptions[] =
 362     IFM_TYPE_DESCRIPTIONS;
 363
 364 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 365     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 366
 367 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 368     IFM_SUBTYPE_ETHERNET_ALIASES;
 369
 370 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 371     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 372
 373 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 374     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 375
 376 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 377     IFM_SUBTYPE_TOKENRING_ALIASES;
 378
 379 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 380     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 381
 382 static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
 383     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
 384
 385 static struct ifmedia_description ifm_subtype_fddi_aliases[] =
 386     IFM_SUBTYPE_FDDI_ALIASES;
 387
 388 static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
 389     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
 390
 391 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 392     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 393
 394 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 395     IFM_SUBTYPE_IEEE80211_ALIASES;
 396
 397 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 398     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 399
 400 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 401     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 402
 403 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 404     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 405
 406 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 407     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 408
 409 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 410     IFM_SUBTYPE_ATM_ALIASES;
 411
 412 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 413     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 414
 415 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 416     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 417
 418 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 419     IFM_SUBTYPE_SHARED_ALIASES;
 420
 421 static struct ifmedia_description ifm_shared_option_descriptions[] =
 422     IFM_SHARED_OPTION_DESCRIPTIONS;
 423
 424 static struct ifmedia_description ifm_shared_option_aliases[] =
 425     IFM_SHARED_OPTION_ALIASES;
 426
 427 struct ifmedia_type_to_subtype {
 428         struct {
 429                 struct ifmedia_description *desc;
 430                 int alias;
 431         } subtypes[5];
 432         struct {
 433                 struct ifmedia_description *desc;
 434                 int alias;
 435         } options[4];
 436         struct {
 437                 struct ifmedia_description *desc;
 438                 int alias;
 439         } modes[3];
 440 };
 441
 442 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 443 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 444         {
 445                 {
 446                         { &ifm_subtype_shared_descriptions[0], 0 },
 447                         { &ifm_subtype_shared_aliases[0], 1 },
 448                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 449                         { &ifm_subtype_ethernet_aliases[0], 1 },
 450                         { NULL, 0 },
 451                 },
 452                 {
 453                         { &ifm_shared_option_descriptions[0], 0 },
 454                         { &ifm_shared_option_aliases[0], 1 },
 455                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 456                         { NULL, 0 },
 457                 },
 458                 {
 459                         { NULL, 0 },
 460                 },
 461         },
 462         {
 463                 {
 464                         { &ifm_subtype_shared_descriptions[0], 0 },
 465                         { &ifm_subtype_shared_aliases[0], 1 },
 466                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 467                         { &ifm_subtype_tokenring_aliases[0], 1 },
 468                         { NULL, 0 },
 469                 },
 470                 {
 471                         { &ifm_shared_option_descriptions[0], 0 },
 472                         { &ifm_shared_option_aliases[0], 1 },
 473                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 474                         { NULL, 0 },
 475                 },
 476                 {
 477                         { NULL, 0 },
 478                 },
 479         },
 480         {
 481                 {
 482                         { &ifm_subtype_shared_descriptions[0], 0 },
 483                         { &ifm_subtype_shared_aliases[0], 1 },
 484                         { &ifm_subtype_fddi_descriptions[0], 0 },
 485                         { &ifm_subtype_fddi_aliases[0], 1 },
 486                         { NULL, 0 },
 487                 },
 488                 {
 489                         { &ifm_shared_option_descriptions[0], 0 },
 490                         { &ifm_shared_option_aliases[0], 1 },
 491                         { &ifm_subtype_fddi_option_descriptions[0], 0 },
 492                         { NULL, 0 },
 493                 },
 494                 {
 495                         { NULL, 0 },
 496                 },
 497         },
 498         {
 499                 {
 500                         { &ifm_subtype_shared_descriptions[0], 0 },
 501                         { &ifm_subtype_shared_aliases[0], 1 },
 502                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 503                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 504                         { NULL, 0 },
 505                 },
 506                 {
 507                         { &ifm_shared_option_descriptions[0], 0 },
 508                         { &ifm_shared_option_aliases[0], 1 },
 509                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 510                         { NULL, 0 },
 511                 },
 512                 {
 513                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 514                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 515                         { NULL, 0 },
 516                 },
 517         },
 518         {
 519                 {
 520                         { &ifm_subtype_shared_descriptions[0], 0 },
 521                         { &ifm_subtype_shared_aliases[0], 1 },
 522                         { &ifm_subtype_atm_descriptions[0], 0 },
 523                         { &ifm_subtype_atm_aliases[0], 1 },
 524                         { NULL, 0 },
 525                 },
 526                 {
 527                         { &ifm_shared_option_descriptions[0], 0 },
 528                         { &ifm_shared_option_aliases[0], 1 },
 529                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 530                         { NULL, 0 },
 531                 },
 532                 {
 533                         { NULL, 0 },
 534                 },
 535         },
 536 };
 537
 538 static int
 539 get_media_subtype(int type, const char *val)
 540 {
 541         struct ifmedia_description *desc;
 542         struct ifmedia_type_to_subtype *ttos;
 543         int rval, i;
 544
 545         /* Find the top-level interface type. */
 546         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 547             desc->ifmt_string != NULL; desc++, ttos++)
 548                 if (type == desc->ifmt_word)
 549                         break;
 550         if (desc->ifmt_string == NULL)
 551                 errx(1, "unknown media type 0x%x", type);
 552
 553         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 554                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 555                 if (rval != -1)
 556                         return (rval);
 557         }
 558         errx(1, "unknown media subtype: %s", val);
 559         /*NOTREACHED*/
 560 }
 561
 562 static int
 563 get_media_mode(int type, const char *val)
 564 {
 565         struct ifmedia_description *desc;
 566         struct ifmedia_type_to_subtype *ttos;
 567         int rval, i;
 568
 569         /* Find the top-level interface type. */
 570         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 571             desc->ifmt_string != NULL; desc++, ttos++)
 572                 if (type == desc->ifmt_word)
 573                         break;
 574         if (desc->ifmt_string == NULL)
 575                 errx(1, "unknown media mode 0x%x", type);
 576
 577         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 578                 rval = lookup_media_word(ttos->modes[i].desc, val);
 579                 if (rval != -1)
 580                         return (rval);
 581         }
 582         return -1;
 583 }
 584
 585 static int
 586 get_media_options(int type, const char *val)
 587 {
 588         struct ifmedia_description *desc;
 589         struct ifmedia_type_to_subtype *ttos;
 590         char *optlist, *optptr;
 591         int option = 0, i, rval = 0;
 592
 593         /* We muck with the string, so copy it. */
 594         optlist = strdup(val);
 595         if (optlist == NULL)
 596                 err(1, "strdup");
 597
 598         /* Find the top-level interface type. */
 599         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 600             desc->ifmt_string != NULL; desc++, ttos++)
 601                 if (type == desc->ifmt_word)
 602                         break;
 603         if (desc->ifmt_string == NULL)
 604                 errx(1, "unknown media type 0x%x", type);
 605
 606         /*
 607          * Look up the options in the user-provided comma-separated
 608          * list.
 609          */
 610         optptr = optlist;
 611         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 612                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 613                         option = lookup_media_word(ttos->options[i].desc, optptr);
 614                         if (option != -1)
 615                                 break;
 616                 }
 617                 if (option == 0)
 618                         errx(1, "unknown option: %s", optptr);
 619                 rval |= option;
 620         }
 621
 622         free(optlist);
 623         return (rval);
 624 }
 625
 626 static int
 627 lookup_media_word(struct ifmedia_description *desc, const char *val)
 628 {
 629
 630         for (; desc->ifmt_string != NULL; desc++)
 631                 if (strcasecmp(desc->ifmt_string, val) == 0)
 632                         return (desc->ifmt_word);
 633
 634         return (-1);
 635 }
 636
 637 static struct ifmedia_description *get_toptype_desc(int ifmw)
 638 {
 639         struct ifmedia_description *desc;
 640
 641         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 642                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 643                         break;
 644
 645         return desc;
 646 }
 647
 648 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 649 {
 650         struct ifmedia_description *desc;
 651         struct ifmedia_type_to_subtype *ttos;
 652
 653         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 654             desc->ifmt_string != NULL; desc++, ttos++)
 655                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 656                         break;
 657
 658         return ttos;
 659 }
 660
 661 static struct ifmedia_description *get_subtype_desc(int ifmw,
 662     struct ifmedia_type_to_subtype *ttos)
 663 {
 664         int i;
 665         struct ifmedia_description *desc;
 666
 667         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 668                 if (ttos->subtypes[i].alias)
 669                         continue;
 670                 for (desc = ttos->subtypes[i].desc;
 671                     desc->ifmt_string != NULL; desc++) {
 672                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 673                                 return desc;
 674                 }
 675         }
 676
 677         return NULL;
 678 }
 679
 680 static struct ifmedia_description *get_mode_desc(int ifmw,
 681     struct ifmedia_type_to_subtype *ttos)
 682 {
 683         int i;
 684         struct ifmedia_description *desc;
 685
 686         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 687                 if (ttos->modes[i].alias)
 688                         continue;
 689                 for (desc = ttos->modes[i].desc;
 690                     desc->ifmt_string != NULL; desc++) {
 691                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 692                                 return desc;
 693                 }
 694         }
 695
 696         return NULL;
 697 }
 698
 699 static void
 700 print_media_word(int ifmw, int print_toptype)
 701 {
 702         struct ifmedia_description *desc;
 703         struct ifmedia_type_to_subtype *ttos;
 704         int seen_option = 0, i;
 705
 706         /* Find the top-level interface type. */
 707         desc = get_toptype_desc(ifmw);
 708         ttos = get_toptype_ttos(ifmw);
 709         if (desc->ifmt_string == NULL) {
 710                 printf("<unknown type>");
 711                 return;
 712         } else if (print_toptype) {
 713                 printf("%s", desc->ifmt_string);
 714         }
 715
 716         /*
 717          * Don't print the top-level type; it's not like we can
 718          * change it, or anything.
 719          */
 720
 721         /* Find subtype. */
 722         desc = get_subtype_desc(ifmw, ttos);
 723         if (desc == NULL) {
 724                 printf("<unknown subtype>");
 725                 return;
 726         }
 727
 728         if (print_toptype)
 729                 putchar(' ');
 730
 731         printf("%s", desc->ifmt_string);
 732
 733         if (print_toptype) {
 734                 desc = get_mode_desc(ifmw, ttos);
 735                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 736                         printf(" mode %s", desc->ifmt_string);
 737         }
 738
 739         /* Find options. */
 740         for (i = 0; ttos->options[i].desc != NULL; i++) {
 741                 if (ttos->options[i].alias)
 742                         continue;
 743                 for (desc = ttos->options[i].desc;
 744                     desc->ifmt_string != NULL; desc++) {
 745                         if (ifmw & desc->ifmt_word) {
 746                                 if (seen_option == 0)
 747                                         printf(" <");
 748                                 printf("%s%s", seen_option++ ? "," : "",
 749                                     desc->ifmt_string);
 750                         }
 751                 }
 752         }
 753         printf("%s", seen_option ? ">" : "");
 754
 755         if (print_toptype && IFM_INST(ifmw) != 0)
 756                 printf(" instance %d", IFM_INST(ifmw));
 757 }
 758
 759 static void
 760 print_media_word_ifconfig(int ifmw)
 761 {
 762         struct ifmedia_description *desc;
 763         struct ifmedia_type_to_subtype *ttos;
 764         int seen_option = 0, i;
 765
 766         /* Find the top-level interface type. */
 767         desc = get_toptype_desc(ifmw);
 768         ttos = get_toptype_ttos(ifmw);
 769         if (desc->ifmt_string == NULL) {
 770                 printf("<unknown type>");
 771                 return;
 772         }
 773
 774         /*
 775          * Don't print the top-level type; it's not like we can
 776          * change it, or anything.
 777          */
 778
 779         /* Find subtype. */
 780         desc = get_subtype_desc(ifmw, ttos);
 781         if (desc == NULL) {
 782                 printf("<unknown subtype>");
 783                 return;
 784         }
 785
 786         printf("media %s", desc->ifmt_string);
 787
 788         desc = get_mode_desc(ifmw, ttos);
 789         if (desc != NULL)
 790                 printf(" mode %s", desc->ifmt_string);
 791
 792         /* Find options. */
 793         for (i = 0; ttos->options[i].desc != NULL; i++) {
 794                 if (ttos->options[i].alias)
 795                         continue;
 796                 for (desc = ttos->options[i].desc;
 797                     desc->ifmt_string != NULL; desc++) {
 798                         if (ifmw & desc->ifmt_word) {
 799                                 if (seen_option == 0)
 800                                         printf(" mediaopt ");
 801                                 printf("%s%s", seen_option++ ? "," : "",
 802                                     desc->ifmt_string);
 803                         }
 804                 }
 805         }
 806
 807         if (IFM_INST(ifmw) != 0)
 808                 printf(" instance %d", IFM_INST(ifmw));
 809 }
 810
 811 /**********************************************************************
 812  * ...until here.
 813  **********************************************************************/
 814
 815 static struct cmd media_cmds[] = {
 816         DEF_CMD_ARG("media",    setmedia),
 817         DEF_CMD_ARG("mode",     setmediamode),
 818         DEF_CMD_ARG("mediaopt", setmediaopt),
 819         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 820         DEF_CMD_ARG("inst",     setmediainst),
 821         DEF_CMD_ARG("instance", setmediainst),
 822 };
 823 static struct afswtch af_media = {
 824         .af_name        = "af_media",
 825         .af_af          = AF_UNSPEC,
 826         .af_other_status = media_status,
 827 };
 828
 829 static __constructor void
 830 ifmedia_ctor(void)
 831 {
 832 #define N(a)    (sizeof(a) / sizeof(a[0]))
 833         size_t i;
 834
 835         for (i = 0; i < N(media_cmds);  i++)
 836                 cmd_register(&media_cmds[i]);
 837         af_register(&af_media);
 838 #undef N
 839 }