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_FDDI:
 172                 case IFM_TOKEN:
 173                         if (ifmr.ifm_status & IFM_ACTIVE)
 174                                 printf("inserted");
 175                         else
 176                                 printf("no ring");
 177                         break;
 178
 179                 case IFM_IEEE80211:
 180                         if (ifmr.ifm_status & IFM_ACTIVE) {
 181                                 /* NB: only sta mode associates */
 182                                 if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
 183                                         printf("associated");
 184                                 else
 185                                         printf("running");
 186                         } else
 187                                 printf("no carrier");
 188                         break;
 189                 }
 190                 putchar('\n');
 191         }
 192
 193         if (ifmr.ifm_count > 0 && supmedia) {
 194                 printf("\tsupported media:\n");
 195                 for (i = 0; i < ifmr.ifm_count; i++) {
 196                         printf("\t\t");
 197                         print_media_word_ifconfig(media_list[i]);
 198                         putchar('\n');
 199                 }
 200         }
 201
 202         free(media_list);
 203 }
 204
 205 struct ifmediareq *
 206 ifmedia_getstate(int s)
 207 {
 208         static struct ifmediareq *ifmr = NULL;
 209         int *mwords;
 210         int xmedia = 1;
 211
 212         if (ifmr == NULL) {
 213                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 214                 if (ifmr == NULL)
 215                         err(1, "malloc");
 216
 217                 (void) memset(ifmr, 0, sizeof(struct ifmediareq));
 218                 (void) strlcpy(ifmr->ifm_name, name,
 219                     sizeof(ifmr->ifm_name));
 220
 221                 ifmr->ifm_count = 0;
 222                 ifmr->ifm_ulist = NULL;
 223
 224                 /*
 225                  * We must go through the motions of reading all
 226                  * supported media because we need to know both
 227                  * the current media type and the top-level type.
 228                  */
 229
 230                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0) {
 231                         xmedia = 0;
 232                 }
 233                 if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
 234                         err(1, "SIOCGIFMEDIA");
 235                 }
 236
 237                 if (ifmr->ifm_count == 0)
 238                         errx(1, "%s: no media types?", name);
 239
 240                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 241                 if (mwords == NULL)
 242                         err(1, "malloc");
 243
 244                 ifmr->ifm_ulist = mwords;
 245                 if (xmedia) {
 246                         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0)
 247                                 err(1, "SIOCGIFXMEDIA");
 248                 } else {
 249                         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 250                                 err(1, "SIOCGIFMEDIA");
 251                 }
 252         }
 253
 254         return ifmr;
 255 }
 256
 257 static void
 258 setifmediacallback(int s, void *arg)
 259 {
 260         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 261         static int did_it = 0;
 262
 263         if (!did_it) {
 264                 ifr.ifr_media = ifmr->ifm_current;
 265                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 266                         err(1, "SIOCSIFMEDIA (media)");
 267                 free(ifmr->ifm_ulist);
 268                 free(ifmr);
 269                 did_it = 1;
 270         }
 271 }
 272
 273 static void
 274 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 275 {
 276         struct ifmediareq *ifmr;
 277         int subtype;
 278
 279         ifmr = ifmedia_getstate(s);
 280
 281         /*
 282          * We are primarily concerned with the top-level type.
 283          * However, "current" may be only IFM_NONE, so we just look
 284          * for the top-level type in the first "supported type"
 285          * entry.
 286          *
 287          * (I'm assuming that all supported media types for a given
 288          * interface will be the same top-level type..)
 289          */
 290         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 291
 292         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 293         ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
 294             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 295
 296         ifmr->ifm_current = ifr.ifr_media;
 297         callback_register(setifmediacallback, (void *)ifmr);
 298 }
 299
 300 static void
 301 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 302 {
 303
 304         domediaopt(val, 0, s);
 305 }
 306
 307 static void
 308 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 309 {
 310
 311         domediaopt(val, 1, s);
 312 }
 313
 314 static void
 315 domediaopt(const char *val, int clear, int s)
 316 {
 317         struct ifmediareq *ifmr;
 318         int options;
 319
 320         ifmr = ifmedia_getstate(s);
 321
 322         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 323
 324         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 325         ifr.ifr_media = ifmr->ifm_current;
 326         if (clear)
 327                 ifr.ifr_media &= ~options;
 328         else {
 329                 if (options & IFM_HDX) {
 330                         ifr.ifr_media &= ~IFM_FDX;
 331                         options &= ~IFM_HDX;
 332                 }
 333                 ifr.ifr_media |= options;
 334         }
 335         ifmr->ifm_current = ifr.ifr_media;
 336         callback_register(setifmediacallback, (void *)ifmr);
 337 }
 338
 339 static void
 340 setmediainst(const char *val, int d, int s, const struct afswtch *afp)
 341 {
 342         struct ifmediareq *ifmr;
 343         int inst;
 344
 345         ifmr = ifmedia_getstate(s);
 346
 347         inst = atoi(val);
 348         if (inst < 0 || inst > (int)IFM_INST_MAX)
 349                 errx(1, "invalid media instance: %s", val);
 350
 351         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 352         ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
 353
 354         ifmr->ifm_current = ifr.ifr_media;
 355         callback_register(setifmediacallback, (void *)ifmr);
 356 }
 357
 358 static void
 359 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 360 {
 361         struct ifmediareq *ifmr;
 362         int mode;
 363
 364         ifmr = ifmedia_getstate(s);
 365
 366         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 367
 368         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 369         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 370
 371         ifmr->ifm_current = ifr.ifr_media;
 372         callback_register(setifmediacallback, (void *)ifmr);
 373 }
 374
 375 /**********************************************************************
 376  * A good chunk of this is duplicated from sys/net/if_media.c
 377  **********************************************************************/
 378
 379 static struct ifmedia_description ifm_type_descriptions[] =
 380     IFM_TYPE_DESCRIPTIONS;
 381
 382 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 383     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 384
 385 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 386     IFM_SUBTYPE_ETHERNET_ALIASES;
 387
 388 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 389     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 390
 391 static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
 392     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
 393
 394 static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
 395     IFM_SUBTYPE_TOKENRING_ALIASES;
 396
 397 static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
 398     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
 399
 400 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 401     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 402
 403 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 404     IFM_SUBTYPE_IEEE80211_ALIASES;
 405
 406 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 407     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 408
 409 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 410     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 411
 412 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 413     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 414
 415 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 416     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 417
 418 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 419     IFM_SUBTYPE_ATM_ALIASES;
 420
 421 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 422     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 423
 424 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 425     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 426
 427 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 428     IFM_SUBTYPE_SHARED_ALIASES;
 429
 430 static struct ifmedia_description ifm_shared_option_descriptions[] =
 431     IFM_SHARED_OPTION_DESCRIPTIONS;
 432
 433 static struct ifmedia_description ifm_shared_option_aliases[] =
 434     IFM_SHARED_OPTION_ALIASES;
 435
 436 struct ifmedia_type_to_subtype {
 437         struct {
 438                 struct ifmedia_description *desc;
 439                 int alias;
 440         } subtypes[5];
 441         struct {
 442                 struct ifmedia_description *desc;
 443                 int alias;
 444         } options[4];
 445         struct {
 446                 struct ifmedia_description *desc;
 447                 int alias;
 448         } modes[3];
 449 };
 450
 451 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 452 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 453         {
 454                 {
 455                         { &ifm_subtype_shared_descriptions[0], 0 },
 456                         { &ifm_subtype_shared_aliases[0], 1 },
 457                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 458                         { &ifm_subtype_ethernet_aliases[0], 1 },
 459                         { NULL, 0 },
 460                 },
 461                 {
 462                         { &ifm_shared_option_descriptions[0], 0 },
 463                         { &ifm_shared_option_aliases[0], 1 },
 464                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 465                         { NULL, 0 },
 466                 },
 467                 {
 468                         { NULL, 0 },
 469                 },
 470         },
 471         {
 472                 {
 473                         { &ifm_subtype_shared_descriptions[0], 0 },
 474                         { &ifm_subtype_shared_aliases[0], 1 },
 475                         { &ifm_subtype_tokenring_descriptions[0], 0 },
 476                         { &ifm_subtype_tokenring_aliases[0], 1 },
 477                         { NULL, 0 },
 478                 },
 479                 {
 480                         { &ifm_shared_option_descriptions[0], 0 },
 481                         { &ifm_shared_option_aliases[0], 1 },
 482                         { &ifm_subtype_tokenring_option_descriptions[0], 0 },
 483                         { NULL, 0 },
 484                 },
 485                 {
 486                         { NULL, 0 },
 487                 },
 488         },
 489         {
 490                 {
 491                         { &ifm_subtype_shared_descriptions[0], 0 },
 492                         { &ifm_subtype_shared_aliases[0], 1 },
 493                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 494                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 495                         { NULL, 0 },
 496                 },
 497                 {
 498                         { &ifm_shared_option_descriptions[0], 0 },
 499                         { &ifm_shared_option_aliases[0], 1 },
 500                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 501                         { NULL, 0 },
 502                 },
 503                 {
 504                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 505                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 506                         { NULL, 0 },
 507                 },
 508         },
 509         {
 510                 {
 511                         { &ifm_subtype_shared_descriptions[0], 0 },
 512                         { &ifm_subtype_shared_aliases[0], 1 },
 513                         { &ifm_subtype_atm_descriptions[0], 0 },
 514                         { &ifm_subtype_atm_aliases[0], 1 },
 515                         { NULL, 0 },
 516                 },
 517                 {
 518                         { &ifm_shared_option_descriptions[0], 0 },
 519                         { &ifm_shared_option_aliases[0], 1 },
 520                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 521                         { NULL, 0 },
 522                 },
 523                 {
 524                         { NULL, 0 },
 525                 },
 526         },
 527 };
 528
 529 static int
 530 get_media_subtype(int type, const char *val)
 531 {
 532         struct ifmedia_description *desc;
 533         struct ifmedia_type_to_subtype *ttos;
 534         int rval, i;
 535
 536         /* Find the top-level interface type. */
 537         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 538             desc->ifmt_string != NULL; desc++, ttos++)
 539                 if (type == desc->ifmt_word)
 540                         break;
 541         if (desc->ifmt_string == NULL)
 542                 errx(1, "unknown media type 0x%x", type);
 543
 544         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 545                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 546                 if (rval != -1)
 547                         return (rval);
 548         }
 549         errx(1, "unknown media subtype: %s", val);
 550         /*NOTREACHED*/
 551 }
 552
 553 static int
 554 get_media_mode(int type, const char *val)
 555 {
 556         struct ifmedia_description *desc;
 557         struct ifmedia_type_to_subtype *ttos;
 558         int rval, i;
 559
 560         /* Find the top-level interface type. */
 561         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 562             desc->ifmt_string != NULL; desc++, ttos++)
 563                 if (type == desc->ifmt_word)
 564                         break;
 565         if (desc->ifmt_string == NULL)
 566                 errx(1, "unknown media mode 0x%x", type);
 567
 568         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 569                 rval = lookup_media_word(ttos->modes[i].desc, val);
 570                 if (rval != -1)
 571                         return (rval);
 572         }
 573         return -1;
 574 }
 575
 576 static int
 577 get_media_options(int type, const char *val)
 578 {
 579         struct ifmedia_description *desc;
 580         struct ifmedia_type_to_subtype *ttos;
 581         char *optlist, *optptr;
 582         int option = 0, i, rval = 0;
 583
 584         /* We muck with the string, so copy it. */
 585         optlist = strdup(val);
 586         if (optlist == NULL)
 587                 err(1, "strdup");
 588
 589         /* Find the top-level interface type. */
 590         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 591             desc->ifmt_string != NULL; desc++, ttos++)
 592                 if (type == desc->ifmt_word)
 593                         break;
 594         if (desc->ifmt_string == NULL)
 595                 errx(1, "unknown media type 0x%x", type);
 596
 597         /*
 598          * Look up the options in the user-provided comma-separated
 599          * list.
 600          */
 601         optptr = optlist;
 602         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 603                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 604                         option = lookup_media_word(ttos->options[i].desc, optptr);
 605                         if (option != -1)
 606                                 break;
 607                 }
 608                 if (option == 0)
 609                         errx(1, "unknown option: %s", optptr);
 610                 rval |= option;
 611         }
 612
 613         free(optlist);
 614         return (rval);
 615 }
 616
 617 static int
 618 lookup_media_word(struct ifmedia_description *desc, const char *val)
 619 {
 620
 621         for (; desc->ifmt_string != NULL; desc++)
 622                 if (strcasecmp(desc->ifmt_string, val) == 0)
 623                         return (desc->ifmt_word);
 624
 625         return (-1);
 626 }
 627
 628 static struct ifmedia_description *get_toptype_desc(int ifmw)
 629 {
 630         struct ifmedia_description *desc;
 631
 632         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 633                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 634                         break;
 635
 636         return desc;
 637 }
 638
 639 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 640 {
 641         struct ifmedia_description *desc;
 642         struct ifmedia_type_to_subtype *ttos;
 643
 644         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 645             desc->ifmt_string != NULL; desc++, ttos++)
 646                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 647                         break;
 648
 649         return ttos;
 650 }
 651
 652 static struct ifmedia_description *get_subtype_desc(int ifmw,
 653     struct ifmedia_type_to_subtype *ttos)
 654 {
 655         int i;
 656         struct ifmedia_description *desc;
 657
 658         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 659                 if (ttos->subtypes[i].alias)
 660                         continue;
 661                 for (desc = ttos->subtypes[i].desc;
 662                     desc->ifmt_string != NULL; desc++) {
 663                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 664                                 return desc;
 665                 }
 666         }
 667
 668         return NULL;
 669 }
 670
 671 static struct ifmedia_description *get_mode_desc(int ifmw,
 672     struct ifmedia_type_to_subtype *ttos)
 673 {
 674         int i;
 675         struct ifmedia_description *desc;
 676
 677         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 678                 if (ttos->modes[i].alias)
 679                         continue;
 680                 for (desc = ttos->modes[i].desc;
 681                     desc->ifmt_string != NULL; desc++) {
 682                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 683                                 return desc;
 684                 }
 685         }
 686
 687         return NULL;
 688 }
 689
 690 static void
 691 print_media_word(int ifmw, int print_toptype)
 692 {
 693         struct ifmedia_description *desc;
 694         struct ifmedia_type_to_subtype *ttos;
 695         int seen_option = 0, i;
 696
 697         /* Find the top-level interface type. */
 698         desc = get_toptype_desc(ifmw);
 699         ttos = get_toptype_ttos(ifmw);
 700         if (desc->ifmt_string == NULL) {
 701                 printf("<unknown type>");
 702                 return;
 703         } else if (print_toptype) {
 704                 printf("%s", desc->ifmt_string);
 705         }
 706
 707         /*
 708          * Don't print the top-level type; it's not like we can
 709          * change it, or anything.
 710          */
 711
 712         /* Find subtype. */
 713         desc = get_subtype_desc(ifmw, ttos);
 714         if (desc == NULL) {
 715                 printf("<unknown subtype>");
 716                 return;
 717         }
 718
 719         if (print_toptype)
 720                 putchar(' ');
 721
 722         printf("%s", desc->ifmt_string);
 723
 724         if (print_toptype) {
 725                 desc = get_mode_desc(ifmw, ttos);
 726                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 727                         printf(" mode %s", desc->ifmt_string);
 728         }
 729
 730         /* Find options. */
 731         for (i = 0; ttos->options[i].desc != NULL; i++) {
 732                 if (ttos->options[i].alias)
 733                         continue;
 734                 for (desc = ttos->options[i].desc;
 735                     desc->ifmt_string != NULL; desc++) {
 736                         if (ifmw & desc->ifmt_word) {
 737                                 if (seen_option == 0)
 738                                         printf(" <");
 739                                 printf("%s%s", seen_option++ ? "," : "",
 740                                     desc->ifmt_string);
 741                         }
 742                 }
 743         }
 744         printf("%s", seen_option ? ">" : "");
 745
 746         if (print_toptype && IFM_INST(ifmw) != 0)
 747                 printf(" instance %d", IFM_INST(ifmw));
 748 }
 749
 750 static void
 751 print_media_word_ifconfig(int ifmw)
 752 {
 753         struct ifmedia_description *desc;
 754         struct ifmedia_type_to_subtype *ttos;
 755         int seen_option = 0, i;
 756
 757         /* Find the top-level interface type. */
 758         desc = get_toptype_desc(ifmw);
 759         ttos = get_toptype_ttos(ifmw);
 760         if (desc->ifmt_string == NULL) {
 761                 printf("<unknown type>");
 762                 return;
 763         }
 764
 765         /*
 766          * Don't print the top-level type; it's not like we can
 767          * change it, or anything.
 768          */
 769
 770         /* Find subtype. */
 771         desc = get_subtype_desc(ifmw, ttos);
 772         if (desc == NULL) {
 773                 printf("<unknown subtype>");
 774                 return;
 775         }
 776
 777         printf("media %s", desc->ifmt_string);
 778
 779         desc = get_mode_desc(ifmw, ttos);
 780         if (desc != NULL)
 781                 printf(" mode %s", desc->ifmt_string);
 782
 783         /* Find options. */
 784         for (i = 0; ttos->options[i].desc != NULL; i++) {
 785                 if (ttos->options[i].alias)
 786                         continue;
 787                 for (desc = ttos->options[i].desc;
 788                     desc->ifmt_string != NULL; desc++) {
 789                         if (ifmw & desc->ifmt_word) {
 790                                 if (seen_option == 0)
 791                                         printf(" mediaopt ");
 792                                 printf("%s%s", seen_option++ ? "," : "",
 793                                     desc->ifmt_string);
 794                         }
 795                 }
 796         }
 797
 798         if (IFM_INST(ifmw) != 0)
 799                 printf(" instance %d", IFM_INST(ifmw));
 800 }
 801
 802 /**********************************************************************
 803  * ...until here.
 804  **********************************************************************/
 805
 806 static struct cmd media_cmds[] = {
 807         DEF_CMD_ARG("media",    setmedia),
 808         DEF_CMD_ARG("mode",     setmediamode),
 809         DEF_CMD_ARG("mediaopt", setmediaopt),
 810         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 811         DEF_CMD_ARG("inst",     setmediainst),
 812         DEF_CMD_ARG("instance", setmediainst),
 813 };
 814 static struct afswtch af_media = {
 815         .af_name        = "af_media",
 816         .af_af          = AF_UNSPEC,
 817         .af_other_status = media_status,
 818 };
 819
 820 static __constructor void
 821 ifmedia_ctor(void)
 822 {
 823         size_t i;
 824
 825         for (i = 0; i < nitems(media_cmds);  i++)
 826                 cmd_register(&media_cmds[i]);
 827         af_register(&af_media);
 828 }