sbin/ifconfig/ifmedia.c

   1 /*      $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $      */
   2 /* $FreeBSD: src/sbin/ifconfig/ifmedia.c,v 1.19.2.1 2006/03/01 22:24:23 glebius Exp $ */
   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. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  */
  64
  65 #include <sys/param.h>
  66 #include <sys/ioctl.h>
  67 #include <sys/socket.h>
  68 #include <sys/sysctl.h>
  69 #include <sys/time.h>
  70
  71 #include <net/if.h>
  72 #include <net/if_dl.h>
  73 #include <net/if_types.h>
  74 #include <net/if_media.h>
  75 #include <net/route.h>
  76
  77 #include <ctype.h>
  78 #include <err.h>
  79 #include <errno.h>
  80 #include <fcntl.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <unistd.h>
  85
  86 #include "ifconfig.h"
  87
  88 static void     domediaopt(const char *, int, int);
  89 static int      get_media_subtype(int, const char *);
  90 static int      get_media_mode(int, const char *);
  91 static int      get_media_options(int, const char *);
  92 static int      lookup_media_word(struct ifmedia_description *, const char *);
  93 static void     print_media_word(int, int);
  94 static void     print_media_word_ifconfig(int);
  95
  96 static struct ifmedia_description *get_toptype_desc(int);
  97 static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
  98 static struct ifmedia_description *get_subtype_desc(int,
  99     struct ifmedia_type_to_subtype *ttos);
 100
 101 static void
 102 media_status(int s)
 103 {
 104         struct ifmediareq ifmr;
 105         int *media_list, i;
 106         int xmedia = 1;
 107
 108         memset(&ifmr, 0, sizeof(ifmr));
 109         strlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
 110
 111         /*
 112          * Check if interface supports extended media types.
 113          */
 114         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 115                 xmedia = 0;
 116         if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
 117                 /*
 118                  * Interface doesn't support SIOC{G,S}IFMEDIA.
 119                  */
 120                 return;
 121         }
 122
 123         if (ifmr.ifm_count == 0) {
 124                 warnx("%s: no media types?", name);
 125                 return;
 126         }
 127
 128         media_list = malloc(ifmr.ifm_count * sizeof(int));
 129         if (media_list == NULL)
 130                 err(1, "malloc");
 131         ifmr.ifm_ulist = media_list;
 132
 133         if (xmedia) {
 134                 if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)&ifmr) < 0)
 135                         err(1, "SIOCGIFXMEDIA");
 136         } else {
 137                 if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
 138                         err(1, "SIOCGIFMEDIA");
 139         }
 140
 141         printf("\tmedia: ");
 142         print_media_word(ifmr.ifm_current, 1);
 143         if (ifmr.ifm_active != ifmr.ifm_current) {
 144                 putchar(' ');
 145                 putchar('(');
 146                 print_media_word(ifmr.ifm_active, 0);
 147                 putchar(')');
 148         }
 149
 150         putchar('\n');
 151
 152         if (ifmr.ifm_status & IFM_AVALID) {
 153                 printf("\tstatus: ");
 154                 switch (IFM_TYPE(ifmr.ifm_active)) {
 155                 case IFM_ETHER:
 156                         if (ifmr.ifm_status & IFM_ACTIVE)
 157                                 printf("active");
 158                         else
 159                                 printf("no carrier");
 160                         break;
 161
 162                 case IFM_ATM:
 163                         if (ifmr.ifm_status & IFM_ACTIVE)
 164                                 printf("active");
 165                         else
 166                                 printf("no carrier");
 167                         break;
 168
 169                 case IFM_IEEE80211:
 170                         /* XXX: Different value for adhoc? */
 171                         if (ifmr.ifm_status & IFM_ACTIVE)
 172                                 printf("associated");
 173                         else
 174                                 printf("no carrier");
 175                         break;
 176                 case IFM_CARP:
 177                         if (ifmr.ifm_status & IFM_ACTIVE)
 178                                 printf("master");
 179                         else
 180                                 printf("backup");
 181                         break;
 182                 }
 183                 putchar('\n');
 184         }
 185
 186         if (ifmr.ifm_count > 0 && supmedia) {
 187                 printf("\tsupported media:\n");
 188                 for (i = 0; i < ifmr.ifm_count; i++) {
 189                         printf("\t\t");
 190                         print_media_word_ifconfig(media_list[i]);
 191                         putchar('\n');
 192                 }
 193         }
 194
 195         free(media_list);
 196 }
 197
 198 struct ifmediareq *
 199 ifmedia_getstate(int s)
 200 {
 201         static struct ifmediareq *ifmr = NULL;
 202         int *mwords;
 203         int xmedia = 1;
 204
 205         if (ifmr == NULL) {
 206                 ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
 207                 if (ifmr == NULL)
 208                         err(1, "malloc");
 209
 210                 memset(ifmr, 0, sizeof(struct ifmediareq));
 211                 strlcpy(ifmr->ifm_name, name, 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                 if (xmedia == 0 && ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 225                         err(1, "SIOCGIFMEDIA");
 226
 227                 if (ifmr->ifm_count == 0)
 228                         errx(1, "%s: no media types?", name);
 229
 230                 mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
 231                 if (mwords == NULL)
 232                         err(1, "malloc");
 233
 234                 ifmr->ifm_ulist = mwords;
 235                 if (xmedia) {
 236                         if (ioctl(s, SIOCGIFXMEDIA, (caddr_t)ifmr) < 0)
 237                                 err(1, "SIOCGIFXMEDIA");
 238                 } else {
 239                         if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
 240                                 err(1, "SIOCGIFMEDIA");
 241                 }
 242         }
 243
 244         return ifmr;
 245 }
 246
 247 static void
 248 setifmediacallback(int s, void *arg)
 249 {
 250         struct ifmediareq *ifmr = (struct ifmediareq *)arg;
 251         static int did_it = 0;
 252
 253         if (!did_it) {
 254                 ifr.ifr_media = ifmr->ifm_current;
 255                 if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
 256                         err(1, "SIOCSIFMEDIA (media)");
 257                 free(ifmr->ifm_ulist);
 258                 free(ifmr);
 259                 did_it = 1;
 260         }
 261 }
 262
 263 static void
 264 setmedia(const char *val, int d, int s, const struct afswtch *afp)
 265 {
 266         struct ifmediareq *ifmr;
 267         int subtype;
 268
 269         ifmr = ifmedia_getstate(s);
 270
 271         /*
 272          * We are primarily concerned with the top-level type.
 273          * However, "current" may be only IFM_NONE, so we just look
 274          * for the top-level type in the first "supported type"
 275          * entry.
 276          *
 277          * (I'm assuming that all supported media types for a given
 278          * interface will be the same top-level type..)
 279          */
 280         subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 281
 282         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 283         ifr.ifr_media = (ifmr->ifm_current & ~(IFM_NMASK|IFM_TMASK)) |
 284             IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
 285
 286         if ((ifr.ifr_media & IFM_TMASK) == 0) {
 287                 ifr.ifr_media &= ~IFM_GMASK;
 288         }
 289
 290         ifmr->ifm_current = ifr.ifr_media;
 291         callback_register(setifmediacallback, (void *)ifmr);
 292 }
 293
 294 static void
 295 setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 296 {
 297
 298         domediaopt(val, 0, s);
 299 }
 300
 301 static void
 302 unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
 303 {
 304
 305         domediaopt(val, 1, s);
 306 }
 307
 308 static void
 309 domediaopt(const char *val, int clear, int s)
 310 {
 311         struct ifmediareq *ifmr;
 312         int options;
 313
 314         ifmr = ifmedia_getstate(s);
 315
 316         options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 317
 318         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 319         ifr.ifr_media = ifmr->ifm_current;
 320         if (clear)
 321                 ifr.ifr_media &= ~options;
 322         else
 323                 ifr.ifr_media |= options;
 324
 325         ifmr->ifm_current = ifr.ifr_media;
 326         callback_register(setifmediacallback, (void *)ifmr);
 327 }
 328
 329
 330 static void
 331 setmediamode(const char *val, int d, int s, const struct afswtch *afp)
 332 {
 333         struct ifmediareq *ifmr;
 334         int mode;
 335
 336         ifmr = ifmedia_getstate(s);
 337
 338         mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
 339
 340         strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 341         ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
 342
 343         ifmr->ifm_current = ifr.ifr_media;
 344         callback_register(setifmediacallback, (void *)ifmr);
 345 }
 346
 347 /**********************************************************************
 348  * A good chunk of this is duplicated from sys/net/ifmedia.c
 349  **********************************************************************/
 350
 351 static struct ifmedia_description ifm_type_descriptions[] =
 352     IFM_TYPE_DESCRIPTIONS;
 353
 354 static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
 355     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
 356
 357 static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
 358     IFM_SUBTYPE_ETHERNET_ALIASES;
 359
 360 static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
 361     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
 362
 363 static struct ifmedia_description ifm_subtype_ethernet_option_alias[] =
 364     IFM_SUBTYPE_ETHERNET_OPTION_ALIAS;
 365
 366 static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
 367     IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
 368
 369 static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
 370     IFM_SUBTYPE_IEEE80211_ALIASES;
 371
 372 static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
 373     IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
 374
 375 struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
 376     IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
 377
 378 struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
 379     IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
 380
 381 static struct ifmedia_description ifm_subtype_atm_descriptions[] =
 382     IFM_SUBTYPE_ATM_DESCRIPTIONS;
 383
 384 static struct ifmedia_description ifm_subtype_atm_aliases[] =
 385     IFM_SUBTYPE_ATM_ALIASES;
 386
 387 static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
 388     IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
 389
 390 static struct ifmedia_description ifm_subtype_shared_descriptions[] =
 391     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
 392
 393 static struct ifmedia_description ifm_subtype_shared_aliases[] =
 394     IFM_SUBTYPE_SHARED_ALIASES;
 395
 396 static struct ifmedia_description ifm_shared_option_descriptions[] =
 397     IFM_SHARED_OPTION_DESCRIPTIONS;
 398
 399 struct ifmedia_type_to_subtype {
 400         struct {
 401                 struct ifmedia_description *desc;
 402                 int alias;
 403         } subtypes[5];
 404         struct {
 405                 struct ifmedia_description *desc;
 406                 int alias;
 407         } options[4];
 408         struct {
 409                 struct ifmedia_description *desc;
 410                 int alias;
 411         } modes[3];
 412 };
 413
 414 /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
 415 static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
 416         {
 417                 {
 418                         { &ifm_subtype_shared_descriptions[0], 0 },
 419                         { &ifm_subtype_shared_aliases[0], 1 },
 420                         { &ifm_subtype_ethernet_descriptions[0], 0 },
 421                         { &ifm_subtype_ethernet_aliases[0], 1 },
 422                         { NULL, 0 },
 423                 },
 424                 {
 425                         { &ifm_shared_option_descriptions[0], 0 },
 426                         { &ifm_subtype_ethernet_option_descriptions[0], 0 },
 427                         { &ifm_subtype_ethernet_option_alias[0], 1 },
 428                         { NULL, 0 },
 429                 },
 430                 {
 431                         { NULL, 0 },
 432                 },
 433         },
 434         {
 435                 {
 436                         { &ifm_subtype_shared_descriptions[0], 0 },
 437                         { &ifm_subtype_shared_aliases[0], 1 },
 438                         { &ifm_subtype_ieee80211_descriptions[0], 0 },
 439                         { &ifm_subtype_ieee80211_aliases[0], 1 },
 440                         { NULL, 0 },
 441                 },
 442                 {
 443                         { &ifm_shared_option_descriptions[0], 0 },
 444                         { &ifm_subtype_ieee80211_option_descriptions[0], 0 },
 445                         { NULL, 0 },
 446                 },
 447                 {
 448                         { &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
 449                         { &ifm_subtype_ieee80211_mode_aliases[0], 0 },
 450                         { NULL, 0 },
 451                 },
 452         },
 453         {
 454                 {
 455                         { &ifm_subtype_shared_descriptions[0], 0 },
 456                         { &ifm_subtype_shared_aliases[0], 1 },
 457                         { &ifm_subtype_atm_descriptions[0], 0 },
 458                         { &ifm_subtype_atm_aliases[0], 1 },
 459                         { NULL, 0 },
 460                 },
 461                 {
 462                         { &ifm_shared_option_descriptions[0], 0 },
 463                         { &ifm_subtype_atm_option_descriptions[0], 0 },
 464                         { NULL, 0 },
 465                 },
 466                 {
 467                         { NULL, 0 },
 468                 },
 469         },
 470 };
 471
 472 static int
 473 get_media_subtype(int type, const char *val)
 474 {
 475         struct ifmedia_description *desc;
 476         struct ifmedia_type_to_subtype *ttos;
 477         int rval, i;
 478
 479         /* Find the top-level interface type. */
 480         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 481             desc->ifmt_string != NULL; desc++, ttos++)
 482                 if (type == desc->ifmt_word)
 483                         break;
 484         if (desc->ifmt_string == NULL)
 485                 errx(1, "unknown media type 0x%x", type);
 486
 487         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 488                 rval = lookup_media_word(ttos->subtypes[i].desc, val);
 489                 if (rval != -1)
 490                         return (rval);
 491         }
 492         errx(1, "unknown media subtype: %s", val);
 493         /*NOTREACHED*/
 494 }
 495
 496 static int
 497 get_media_mode(int type, const char *val)
 498 {
 499         struct ifmedia_description *desc;
 500         struct ifmedia_type_to_subtype *ttos;
 501         int rval, i;
 502
 503         /* Find the top-level interface type. */
 504         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 505             desc->ifmt_string != NULL; desc++, ttos++)
 506                 if (type == desc->ifmt_word)
 507                         break;
 508         if (desc->ifmt_string == NULL)
 509                 errx(1, "unknown media mode 0x%x", type);
 510
 511         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 512                 rval = lookup_media_word(ttos->modes[i].desc, val);
 513                 if (rval != -1)
 514                         return (rval);
 515         }
 516         return -1;
 517 }
 518
 519 static int
 520 get_media_options(int type, const char *val)
 521 {
 522         struct ifmedia_description *desc;
 523         struct ifmedia_type_to_subtype *ttos;
 524         char *optlist, *optptr;
 525         int option = 0, i, rval = 0;
 526
 527         /* We muck with the string, so copy it. */
 528         optlist = strdup(val);
 529         if (optlist == NULL)
 530                 err(1, "strdup");
 531
 532         /* Find the top-level interface type. */
 533         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 534             desc->ifmt_string != NULL; desc++, ttos++)
 535                 if (type == desc->ifmt_word)
 536                         break;
 537         if (desc->ifmt_string == NULL)
 538                 errx(1, "unknown media type 0x%x", type);
 539
 540         /*
 541          * Look up the options in the user-provided comma-separated
 542          * list.
 543          */
 544         optptr = optlist;
 545         for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
 546                 for (i = 0; ttos->options[i].desc != NULL; i++) {
 547                         option = lookup_media_word(ttos->options[i].desc, optptr);
 548                         if (option != -1)
 549                                 break;
 550                 }
 551                 if (option == 0)
 552                         errx(1, "unknown option: %s", optptr);
 553                 rval |= option;
 554         }
 555
 556         free(optlist);
 557         return (rval);
 558 }
 559
 560 static int
 561 lookup_media_word(struct ifmedia_description *desc, const char *val)
 562 {
 563
 564         for (; desc->ifmt_string != NULL; desc++)
 565                 if (strcasecmp(desc->ifmt_string, val) == 0)
 566                         return (desc->ifmt_word);
 567
 568         return (-1);
 569 }
 570
 571 static struct ifmedia_description *get_toptype_desc(int ifmw)
 572 {
 573         struct ifmedia_description *desc;
 574
 575         for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
 576                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 577                         break;
 578
 579         return desc;
 580 }
 581
 582 static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
 583 {
 584         struct ifmedia_description *desc;
 585         struct ifmedia_type_to_subtype *ttos;
 586
 587         for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
 588             desc->ifmt_string != NULL; desc++, ttos++)
 589                 if (IFM_TYPE(ifmw) == desc->ifmt_word)
 590                         break;
 591
 592         return ttos;
 593 }
 594
 595 static struct ifmedia_description *get_subtype_desc(int ifmw,
 596     struct ifmedia_type_to_subtype *ttos)
 597 {
 598         int i;
 599         struct ifmedia_description *desc;
 600
 601         for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
 602                 if (ttos->subtypes[i].alias)
 603                         continue;
 604                 for (desc = ttos->subtypes[i].desc;
 605                     desc->ifmt_string != NULL; desc++) {
 606                         if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
 607                                 return desc;
 608                 }
 609         }
 610
 611         return NULL;
 612 }
 613
 614 static struct ifmedia_description *get_mode_desc(int ifmw,
 615     struct ifmedia_type_to_subtype *ttos)
 616 {
 617         int i;
 618         struct ifmedia_description *desc;
 619
 620         for (i = 0; ttos->modes[i].desc != NULL; i++) {
 621                 if (ttos->modes[i].alias)
 622                         continue;
 623                 for (desc = ttos->modes[i].desc;
 624                     desc->ifmt_string != NULL; desc++) {
 625                         if (IFM_MODE(ifmw) == desc->ifmt_word)
 626                                 return desc;
 627                 }
 628         }
 629
 630         return NULL;
 631 }
 632
 633 static void
 634 print_media_word(int ifmw, int print_toptype)
 635 {
 636         struct ifmedia_description *desc;
 637         struct ifmedia_type_to_subtype *ttos;
 638         int seen_option = 0, i;
 639
 640         /* Find the top-level interface type. */
 641         desc = get_toptype_desc(ifmw);
 642         ttos = get_toptype_ttos(ifmw);
 643         if (desc->ifmt_string == NULL) {
 644                 printf("<unknown type>");
 645                 return;
 646         } else if (print_toptype) {
 647                 printf("%s", desc->ifmt_string);
 648         }
 649
 650         /*
 651          * Don't print the top-level type; it's not like we can
 652          * change it, or anything.
 653          */
 654
 655         /* Find subtype. */
 656         desc = get_subtype_desc(ifmw, ttos);
 657         if (desc != NULL)
 658                 goto got_subtype;
 659
 660         /* Falling to here means unknown subtype. */
 661         printf("<unknown subtype>");
 662         return;
 663
 664  got_subtype:
 665         if (print_toptype)
 666                 putchar(' ');
 667
 668         printf("%s", desc->ifmt_string);
 669
 670         if (print_toptype) {
 671                 desc = get_mode_desc(ifmw, ttos);
 672                 if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
 673                         printf(" mode %s", desc->ifmt_string);
 674         }
 675
 676         /* Find options. */
 677         for (i = 0; ttos->options[i].desc != NULL; i++) {
 678                 if (ttos->options[i].alias)
 679                         continue;
 680                 for (desc = ttos->options[i].desc;
 681                     desc->ifmt_string != NULL; desc++) {
 682                         if (ifmw & desc->ifmt_word) {
 683                                 if (seen_option == 0)
 684                                         printf(" <");
 685                                 printf("%s%s", seen_option++ ? "," : "",
 686                                     desc->ifmt_string);
 687                         }
 688                 }
 689         }
 690         printf("%s", seen_option ? ">" : "");
 691 }
 692
 693 static void
 694 print_media_word_ifconfig(int ifmw)
 695 {
 696         struct ifmedia_description *desc;
 697         struct ifmedia_type_to_subtype *ttos;
 698         int i;
 699
 700         /* Find the top-level interface type. */
 701         desc = get_toptype_desc(ifmw);
 702         ttos = get_toptype_ttos(ifmw);
 703         if (desc->ifmt_string == NULL) {
 704                 printf("<unknown type>");
 705                 return;
 706         }
 707
 708         /*
 709          * Don't print the top-level type; it's not like we can
 710          * change it, or anything.
 711          */
 712
 713         /* Find subtype. */
 714         desc = get_subtype_desc(ifmw, ttos);
 715         if (desc != NULL)
 716                 goto got_subtype;
 717
 718         /* Falling to here means unknown subtype. */
 719         printf("<unknown subtype>");
 720         return;
 721
 722  got_subtype:
 723         printf("media %s", desc->ifmt_string);
 724
 725         desc = get_mode_desc(ifmw, ttos);
 726         if (desc != NULL)
 727                 printf(" mode %s", desc->ifmt_string);
 728
 729         /* Find options. */
 730         for (i = 0; ttos->options[i].desc != NULL; i++) {
 731                 if (ttos->options[i].alias)
 732                         continue;
 733                 for (desc = ttos->options[i].desc;
 734                     desc->ifmt_string != NULL; desc++) {
 735                         if (ifmw & desc->ifmt_word) {
 736                                 printf(" mediaopt %s", desc->ifmt_string);
 737                         }
 738                 }
 739         }
 740 }
 741
 742 /**********************************************************************
 743  * ...until here.
 744  **********************************************************************/
 745
 746 static struct cmd media_cmds[] = {
 747         DEF_CMD_ARG("media",    setmedia),
 748         DEF_CMD_ARG("mode",     setmediamode),
 749         DEF_CMD_ARG("mediaopt", setmediaopt),
 750         DEF_CMD_ARG("-mediaopt",unsetmediaopt),
 751 };
 752 static struct afswtch af_media = {
 753         .af_name        = "af_media",
 754         .af_af          = AF_UNSPEC,
 755         .af_other_status = media_status,
 756 };
 757
 758 static __constructor(101) void
 759 ifmedia_ctor(void)
 760 {
 761         size_t i;
 762
 763         for (i = 0; i < nitems(media_cmds);  i++)
 764                 cmd_register(&media_cmds[i]);
 765         af_register(&af_media);
 766 }