sys/net/if_media.h

   1 /*      $NetBSD: if_media.h,v 1.3 1997/03/26 01:19:27 thorpej Exp $     */
   2 /* $FreeBSD: src/sys/net/if_media.h,v 1.9.2.4 2002/07/30 06:22:40 imp Exp $ */
   3 /* $DragonFly: src/sys/net/if_media.h,v 1.2 2003/06/17 04:28:48 dillon Exp $ */
   4
   5 /*
   6  * Copyright (c) 1997
   7  *      Jonathan Stone and Jason R. Thorpe.  All rights reserved.
   8  *
   9  * This software is derived from information provided by Matt Thomas.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by Jonathan Stone
  22  *      and Jason R. Thorpe for the NetBSD Project.
  23  * 4. The names of the authors may not be used to endorse or promote products
  24  *    derived from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  27  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  28  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  29  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  30  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  31  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  32  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  33  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  34  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #ifndef _NET_IF_MEDIA_H_
  40 #define _NET_IF_MEDIA_H_
  41
  42 /*
  43  * Prototypes and definitions for BSD/OS-compatible network interface
  44  * media selection.
  45  *
  46  * Where it is safe to do so, this code strays slightly from the BSD/OS
  47  * design.  Software which uses the API (device drivers, basically)
  48  * shouldn't notice any difference.
  49  *
  50  * Many thanks to Matt Thomas for providing the information necessary
  51  * to implement this interface.
  52  */
  53
  54 #ifdef _KERNEL
  55
  56 #include <sys/queue.h>
  57
  58 /*
  59  * Driver callbacks for media status and change requests.
  60  */
  61 typedef int (*ifm_change_cb_t)(struct ifnet *ifp);
  62 typedef void (*ifm_stat_cb_t)(struct ifnet *ifp, struct ifmediareq *req);
  63
  64 /*
  65  * In-kernel representation of a single supported media type.
  66  */
  67 struct ifmedia_entry {
  68         LIST_ENTRY(ifmedia_entry) ifm_list;
  69         int     ifm_media;      /* description of this media attachment */
  70         int     ifm_data;       /* for driver-specific use */
  71         void    *ifm_aux;       /* for driver-specific use */
  72 };
  73
  74 /*
  75  * One of these goes into a network interface's softc structure.
  76  * It is used to keep general media state.
  77  */
  78 struct ifmedia {
  79         int     ifm_mask;       /* mask of changes we don't care about */
  80         int     ifm_media;      /* current user-set media word */
  81         struct ifmedia_entry *ifm_cur;  /* currently selected media */
  82         LIST_HEAD(, ifmedia_entry) ifm_list; /* list of all supported media */
  83         ifm_change_cb_t ifm_change;     /* media change driver callback */
  84         ifm_stat_cb_t   ifm_status;     /* media status driver callback */
  85 };
  86
  87 /* Initialize an interface's struct if_media field. */
  88 void    ifmedia_init(struct ifmedia *ifm, int dontcare_mask,
  89             ifm_change_cb_t change_callback, ifm_stat_cb_t status_callback);
  90
  91 /* Remove all mediums from a struct ifmedia.  */
  92 void    ifmedia_removeall( struct ifmedia *ifm);
  93
  94 /* Add one supported medium to a struct ifmedia. */
  95 void    ifmedia_add(struct ifmedia *ifm, int mword, int data, void *aux);
  96
  97 /* Add an array (of ifmedia_entry) media to a struct ifmedia. */
  98 void    ifmedia_list_add(struct ifmedia *mp, struct ifmedia_entry *lp,
  99             int count);
 100
 101 /* Set default media type on initialization. */
 102 void    ifmedia_set(struct ifmedia *ifm, int mword);
 103
 104 /* Common ioctl function for getting/setting media, called by driver. */
 105 int     ifmedia_ioctl(struct ifnet *ifp, struct ifreq *ifr,
 106             struct ifmedia *ifm, u_long cmd);
 107
 108 #endif /*_KERNEL */
 109
 110 /*
 111  * if_media Options word:
 112  *      Bits    Use
 113  *      ----    -------
 114  *      0-4     Media variant
 115  *      5-7     Media type
 116  *      8-15    Type specific options
 117  *      16-19   RFU
 118  *      20-27   Shared (global) options
 119  *      28-31   Instance
 120  */
 121
 122 /*
 123  * Ethernet
 124  */
 125 #define IFM_ETHER       0x00000020
 126 #define IFM_10_T        3               /* 10BaseT - RJ45 */
 127 #define IFM_10_2        4               /* 10Base2 - Thinnet */
 128 #define IFM_10_5        5               /* 10Base5 - AUI */
 129 #define IFM_100_TX      6               /* 100BaseTX - RJ45 */
 130 #define IFM_100_FX      7               /* 100BaseFX - Fiber */
 131 #define IFM_100_T4      8               /* 100BaseT4 - 4 pair cat 3 */
 132 #define IFM_100_VG      9               /* 100VG-AnyLAN */
 133 #define IFM_100_T2      10              /* 100BaseT2 */
 134 #define IFM_1000_FX     11              /* 1000BaseFX - gigabit over fiber */
 135 #define IFM_10_STP      12              /* 10BaseT over shielded TP */
 136 #define IFM_10_FL       13              /* 10baseFL - Fiber */
 137 #define IFM_1000_SX     14              /* 1000BaseSX Multi-mode Fiber */
 138 #define IFM_1000_LX     15              /* 1000BaseLX Single-mode Fiber */
 139 #define IFM_1000_CX     16              /* 1000BaseCX 150ohm STP */
 140 #define IFM_1000_TX     17              /* 1000BaseTX 4 pair cat 5 */
 141 #define IFM_homePNA     18              /* HomePNA media for ethernet frames */
 142 /* note 31 is the max! */
 143
 144 /*
 145  * Token ring
 146  */
 147 #define IFM_TOKEN       0x00000040
 148 #define IFM_TOK_STP4    3               /* Shielded twisted pair 4m - DB9 */
 149 #define IFM_TOK_STP16   4               /* Shielded twisted pair 16m - DB9 */
 150 #define IFM_TOK_UTP4    5               /* Unshielded twisted pair 4m - RJ45 */
 151 #define IFM_TOK_UTP16   6               /* Unshielded twisted pair 16m - RJ45 */
 152 #define IFM_TOK_STP100  7               /* Shielded twisted pair 100m - DB9 */
 153 #define IFM_TOK_UTP100  8               /* Unshielded twisted pair 100m - RJ45 */
 154 #define IFM_TOK_ETR     0x00000200      /* Early token release */
 155 #define IFM_TOK_SRCRT   0x00000400      /* Enable source routing features */
 156 #define IFM_TOK_ALLR    0x00000800      /* All routes / Single route bcast */
 157 #define IFM_TOK_DTR     0x00002000      /* Dedicated token ring */
 158 #define IFM_TOK_CLASSIC 0x00004000      /* Classic token ring */
 159 #define IFM_TOK_AUTO    0x00008000      /* Automatic Dedicate/Classic token ring */
 160
 161 /*
 162  * FDDI
 163  */
 164 #define IFM_FDDI        0x00000060
 165 #define IFM_FDDI_SMF    3               /* Single-mode fiber */
 166 #define IFM_FDDI_MMF    4               /* Multi-mode fiber */
 167 #define IFM_FDDI_UTP    5               /* CDDI / UTP */
 168 #define IFM_FDDI_DA     0x00000100      /* Dual attach / single attach */
 169
 170 /*
 171  * IEEE 802.11 Wireless
 172  */
 173 #define IFM_IEEE80211   0x00000080
 174 #define IFM_IEEE80211_FH1       3       /* Frequency Hopping 1Mbps */
 175 #define IFM_IEEE80211_FH2       4       /* Frequency Hopping 2Mbps */
 176 #define IFM_IEEE80211_DS1       5       /* Direct Sequence 1Mbps */
 177 #define IFM_IEEE80211_DS2       6       /* Direct Sequence 2Mbps */
 178 #define IFM_IEEE80211_DS5       7       /* Direct Sequence 5.5Mbps */
 179 #define IFM_IEEE80211_DS11      8       /* Direct Sequence 11Mbps */
 180 #define IFM_IEEE80211_DS22      9       /* Direct Sequence 22Mbps */
 181 #define IFM_IEEE80211_ODFM6     10      /* ODFM 6Mbps */
 182 #define IFM_IEEE80211_ODFM9     11      /* ODFM 9Mbps */
 183 #define IFM_IEEE80211_ODFM12    12      /* ODFM 12Mbps */
 184 #define IFM_IEEE80211_ODFM18    13      /* ODFM 18Mbps */
 185 #define IFM_IEEE80211_ODFM24    14      /* ODFM 24Mbps */
 186 #define IFM_IEEE80211_ODFM36    15      /* ODFM 36Mbps */
 187 #define IFM_IEEE80211_ODFM48    16      /* ODFM 48Mbps */
 188 #define IFM_IEEE80211_ODFM54    17      /* ODFM 54Mbps */
 189 #define IFM_IEEE80211_ODFM72    18      /* ODFM 72Mbps */
 190 #define IFM_IEEE80211_ADHOC     0x00000100      /* Operate in Adhoc mode */
 191 #define IFM_IEEE80211_HOSTAP    0x00000200      /* Operate in Host AP mode */
 192 #define IFM_IEEE80211_IBSS      0x00000400      /* Operate in IBSS mode */
 193 #define IFM_IEEE80211_IBSSMASTER 0x00000800     /* Operate as an IBSS master */
 194
 195 /*
 196  * Shared media sub-types
 197  */
 198 #define IFM_AUTO        0               /* Autoselect best media */
 199 #define IFM_MANUAL      1               /* Jumper/dipswitch selects media */
 200 #define IFM_NONE        2               /* Deselect all media */
 201
 202 /*
 203  * Shared options
 204  */
 205 #define IFM_FDX         0x00100000      /* Force full duplex */
 206 #define IFM_HDX         0x00200000      /* Force half duplex */
 207 #define IFM_FLAG0       0x01000000      /* Driver defined flag */
 208 #define IFM_FLAG1       0x02000000      /* Driver defined flag */
 209 #define IFM_FLAG2       0x04000000      /* Driver defined flag */
 210 #define IFM_LOOP        0x08000000      /* Put hardware in loopback */
 211
 212 /*
 213  * Masks
 214  */
 215 #define IFM_NMASK       0x000000e0      /* Network type */
 216 #define IFM_TMASK       0x0000001f      /* Media sub-type */
 217 #define IFM_IMASK       0xf0000000      /* Instance */
 218 #define IFM_ISHIFT      28              /* Instance shift */
 219 #define IFM_OMASK       0x0000ff00      /* Type specific options */
 220 #define IFM_GMASK       0x0ff00000      /* Global options */
 221
 222 /*
 223  * Status bits
 224  */
 225 #define IFM_AVALID      0x00000001      /* Active bit valid */
 226 #define IFM_ACTIVE      0x00000002      /* Interface attached to working net */
 227
 228 /*
 229  * Macros to extract various bits of information from the media word.
 230  */
 231 #define IFM_TYPE(x)         ((x) & IFM_NMASK)
 232 #define IFM_SUBTYPE(x)      ((x) & IFM_TMASK)
 233 #define IFM_TYPE_OPTIONS(x) ((x) & IFM_OMASK)
 234 #define IFM_INST(x)         (((x) & IFM_IMASK) >> IFM_ISHIFT)
 235 #define IFM_OPTIONS(x)  ((x) & (IFM_OMASK|IFM_GMASK))
 236
 237 #define IFM_INST_MAX    IFM_INST(IFM_IMASK)
 238
 239 /*
 240  * Macro to create a media word.
 241  */
 242 #define IFM_MAKEWORD(type, subtype, options, instance)                  \
 243         ((type) | (subtype) | (options) | ((instance) << IFM_ISHIFT))
 244
 245 /*
 246  * NetBSD extension not defined in the BSDI API.  This is used in various
 247  * places to get the canonical description for a given type/subtype.
 248  *
 249  * NOTE: all but the top-level type descriptions must contain NO whitespace!
 250  * Otherwise, parsing these in ifconfig(8) would be a nightmare.
 251  */
 252 struct ifmedia_description {
 253         int     ifmt_word;              /* word value; may be masked */
 254         const char *ifmt_string;        /* description */
 255 };
 256
 257 #define IFM_TYPE_DESCRIPTIONS {                                         \
 258         { IFM_ETHER,            "Ethernet" },                           \
 259         { IFM_TOKEN,            "Token ring" },                         \
 260         { IFM_FDDI,             "FDDI" },                               \
 261         { IFM_IEEE80211,        "IEEE 802.11 Wireless Ethernet" },      \
 262         { 0, NULL },                                                    \
 263 }
 264
 265 #define IFM_SUBTYPE_ETHERNET_DESCRIPTIONS {                             \
 266         { IFM_10_T,     "10baseT/UTP" },                                \
 267         { IFM_10_2,     "10base2/BNC" },                                \
 268         { IFM_10_5,     "10base5/AUI" },                                \
 269         { IFM_100_TX,   "100baseTX" },                                  \
 270         { IFM_100_FX,   "100baseFX" },                                  \
 271         { IFM_100_T4,   "100baseT4" },                                  \
 272         { IFM_100_VG,   "100baseVG" },                                  \
 273         { IFM_100_T2,   "100baseT2" },                                  \
 274         { IFM_1000_FX,  "1000baseFX" },                                 \
 275         { IFM_10_STP,   "10baseSTP" },                                  \
 276         { IFM_10_FL,    "10baseFL" },                                   \
 277         { IFM_1000_SX,  "1000baseSX" },                                 \
 278         { IFM_1000_LX,  "1000baseLX" },                                 \
 279         { IFM_1000_CX,  "1000baseCX" },                                 \
 280         { IFM_1000_TX,  "1000baseTX" },                                 \
 281         { IFM_homePNA,  "homePNA" },                                    \
 282         { 0, NULL },                                                    \
 283 }
 284
 285 #define IFM_SUBTYPE_ETHERNET_ALIASES {                                  \
 286         { IFM_10_T,     "UTP" },                                        \
 287         { IFM_10_T,     "10UTP" },                                      \
 288         { IFM_10_2,     "BNC" },                                        \
 289         { IFM_10_2,     "10BNC" },                                      \
 290         { IFM_10_5,     "AUI" },                                        \
 291         { IFM_10_5,     "10AUI" },                                      \
 292         { IFM_100_TX,   "100TX" },                                      \
 293         { IFM_100_FX,   "100FX" },                                      \
 294         { IFM_100_T4,   "100T4" },                                      \
 295         { IFM_100_VG,   "100VG" },                                      \
 296         { IFM_100_T2,   "100T2" },                                      \
 297         { IFM_1000_FX,  "1000FX" },                                     \
 298         { IFM_10_STP,   "10STP" },                                      \
 299         { IFM_10_FL,    "10FL" },                                       \
 300         { IFM_1000_FX,  "1000SX" },                                     \
 301         { IFM_1000_FX,  "1000LX" },                                     \
 302         { IFM_1000_FX,  "1000CX" },                                     \
 303         { IFM_1000_FX,  "1000TX" },                                     \
 304         { 0, NULL },                                                    \
 305 }
 306
 307 #define IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS {                      \
 308         { 0, NULL },                                                    \
 309 }
 310
 311 #define IFM_SUBTYPE_TOKENRING_DESCRIPTIONS {                            \
 312         { IFM_TOK_STP4, "DB9/4Mbit" },                                  \
 313         { IFM_TOK_STP16, "DB9/16Mbit" },                                \
 314         { IFM_TOK_UTP4, "UTP/4Mbit" },                                  \
 315         { IFM_TOK_UTP16, "UTP/16Mbit" },                                \
 316         { IFM_TOK_STP100, "STP/100Mbit" },                              \
 317         { IFM_TOK_UTP100, "UTP/100Mbit" },                              \
 318         { 0, NULL },                                                    \
 319 }
 320
 321 #define IFM_SUBTYPE_TOKENRING_ALIASES {                                 \
 322         { IFM_TOK_STP4, "4STP" },                                       \
 323         { IFM_TOK_STP16, "16STP" },                                     \
 324         { IFM_TOK_UTP4, "4UTP" },                                       \
 325         { IFM_TOK_UTP16, "16UTP" },                                     \
 326         { IFM_TOK_STP100, "100STP" },                                   \
 327         { IFM_TOK_UTP100, "100UTP" },                                   \
 328         { 0, NULL },                                                    \
 329 }
 330
 331 #define IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS {                     \
 332         { IFM_TOK_ETR,  "EarlyTokenRelease" },                          \
 333         { IFM_TOK_SRCRT, "SourceRouting" },                             \
 334         { IFM_TOK_ALLR, "AllRoutes" },                                  \
 335         { IFM_TOK_DTR,  "Dedicated" },                                  \
 336         { IFM_TOK_CLASSIC,"Classic" },                                  \
 337         { IFM_TOK_AUTO, " " },                                          \
 338         { 0, NULL },                                                    \
 339 }
 340
 341 #define IFM_SUBTYPE_FDDI_DESCRIPTIONS {                                 \
 342         { IFM_FDDI_SMF, "Single-mode" },                                \
 343         { IFM_FDDI_MMF, "Multi-mode" },                                 \
 344         { IFM_FDDI_UTP, "UTP" },                                        \
 345         { 0, NULL },                                                    \
 346 }
 347
 348 #define IFM_SUBTYPE_FDDI_ALIASES {                                      \
 349         { IFM_FDDI_SMF, "SMF" },                                        \
 350         { IFM_FDDI_MMF, "MMF" },                                        \
 351         { IFM_FDDI_UTP, "CDDI" },                                       \
 352         { 0, NULL },                                                    \
 353 }
 354
 355 #define IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS {                          \
 356         { IFM_FDDI_DA, "Dual-attach" },                                 \
 357         { 0, NULL },                                                    \
 358 }
 359
 360 #define IFM_SUBTYPE_IEEE80211_DESCRIPTIONS {                            \
 361         { IFM_IEEE80211_FH1, "FH/1Mbps" },                              \
 362         { IFM_IEEE80211_FH2, "FH/2Mbps" },                              \
 363         { IFM_IEEE80211_DS1, "DS/1Mbps" },                              \
 364         { IFM_IEEE80211_DS2, "DS/2Mbps" },                              \
 365         { IFM_IEEE80211_DS5, "DS/5.5Mbps" },                            \
 366         { IFM_IEEE80211_DS11, "DS/11Mbps" },                            \
 367         { IFM_IEEE80211_DS22, "DS/22Mbps" },                            \
 368         { IFM_IEEE80211_ODFM6, "ODFM/6Mbps" },                          \
 369         { IFM_IEEE80211_ODFM9, "ODFM/9Mbps" },                          \
 370         { IFM_IEEE80211_ODFM12, "ODFM/12Mbps" },                        \
 371         { IFM_IEEE80211_ODFM18, "ODFM/18Mbps" },                        \
 372         { IFM_IEEE80211_ODFM24, "ODFM/24Mbps" },                        \
 373         { IFM_IEEE80211_ODFM36, "ODFM/36Mbps" },                        \
 374         { IFM_IEEE80211_ODFM48, "ODFM/48Mbps" },                        \
 375         { IFM_IEEE80211_ODFM54, "ODFM/54Mbps" },                        \
 376         { IFM_IEEE80211_ODFM72, "ODFM/72Mbps" },                        \
 377         { 0, NULL },                                                    \
 378 }
 379
 380 #define IFM_SUBTYPE_IEEE80211_ALIASES {                                 \
 381         { IFM_IEEE80211_FH1, "FH1" },                                   \
 382         { IFM_IEEE80211_FH2, "FH2" },                                   \
 383         { IFM_IEEE80211_FH1, "FrequencyHopping/1Mbps" },                \
 384         { IFM_IEEE80211_FH2, "FrequencyHopping/2Mbps" },                \
 385         { IFM_IEEE80211_DS1, "DS1" },                                   \
 386         { IFM_IEEE80211_DS2, "DS2" },                                   \
 387         { IFM_IEEE80211_DS5, "DS5.5" },                                 \
 388         { IFM_IEEE80211_DS11, "DS11" },                                 \
 389         { IFM_IEEE80211_DS22, "DS22" },                                 \
 390         { IFM_IEEE80211_DS1, "DirectSequence/1Mbps" },                  \
 391         { IFM_IEEE80211_DS2, "DirectSequence/2Mbps" },                  \
 392         { IFM_IEEE80211_DS5, "DirectSequence/5.5Mbps" },                \
 393         { IFM_IEEE80211_DS11, "DirectSequence/11Mbps" },                \
 394         { IFM_IEEE80211_DS22, "DirectSequence/22Mbps" },                \
 395         { IFM_IEEE80211_ODFM6, "ODFM6" },                               \
 396         { IFM_IEEE80211_ODFM9, "ODFM9" },                               \
 397         { IFM_IEEE80211_ODFM12, "ODFM12" },                             \
 398         { IFM_IEEE80211_ODFM18, "ODFM18" },                             \
 399         { IFM_IEEE80211_ODFM24, "ODFM24" },                             \
 400         { IFM_IEEE80211_ODFM36, "ODFM36" },                             \
 401         { IFM_IEEE80211_ODFM48, "ODFM48" },                             \
 402         { IFM_IEEE80211_ODFM54, "ODFM54" },                             \
 403         { IFM_IEEE80211_ODFM72, "ODFM72" },                             \
 404         { 0, NULL },                                                    \
 405 }
 406
 407 #define IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS {                     \
 408         { IFM_IEEE80211_ADHOC, "adhoc" },                               \
 409         { IFM_IEEE80211_HOSTAP, "hostap" },                             \
 410         { IFM_IEEE80211_IBSS, "ibss" },                                 \
 411         { IFM_IEEE80211_IBSSMASTER, "ibss-master" },                    \
 412         { 0, NULL },                                                    \
 413 }
 414
 415 #define IFM_SUBTYPE_SHARED_DESCRIPTIONS {                               \
 416         { IFM_AUTO,     "autoselect" },                                 \
 417         { IFM_MANUAL,   "manual" },                                     \
 418         { IFM_NONE,     "none" },                                       \
 419         { 0, NULL },                                                    \
 420 }
 421
 422 #define IFM_SUBTYPE_SHARED_ALIASES {                                    \
 423         { IFM_AUTO,     "auto" },                                       \
 424         { 0, NULL },                                                    \
 425 }
 426
 427 #define IFM_SHARED_OPTION_DESCRIPTIONS {                                \
 428         { IFM_FDX,      "full-duplex" },                                \
 429         { IFM_HDX,      "half-duplex" },                                \
 430         { IFM_FLAG0,    "flag0" },                                      \
 431         { IFM_FLAG1,    "flag1" },                                      \
 432         { IFM_FLAG2,    "flag2" },                                      \
 433         { IFM_LOOP,     "hw-loopback" },                                \
 434         { 0, NULL },                                                    \
 435 }
 436
 437 #endif  /* _NET_IF_MEDIA_H_ */