linux/include/linux/wireless.h
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   1/*
   2 * This file define a set of standard wireless extensions
   3 *
   4 * Version :    22      16.3.07
   5 *
   6 * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>
   7 * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
   8 */
   9
  10#ifndef _LINUX_WIRELESS_H
  11#define _LINUX_WIRELESS_H
  12
  13/************************** DOCUMENTATION **************************/
  14/*
  15 * Initial APIs (1996 -> onward) :
  16 * -----------------------------
  17 * Basically, the wireless extensions are for now a set of standard ioctl
  18 * call + /proc/net/wireless
  19 *
  20 * The entry /proc/net/wireless give statistics and information on the
  21 * driver.
  22 * This is better than having each driver having its entry because
  23 * its centralised and we may remove the driver module safely.
  24 *
  25 * Ioctl are used to configure the driver and issue commands.  This is
  26 * better than command line options of insmod because we may want to
  27 * change dynamically (while the driver is running) some parameters.
  28 *
  29 * The ioctl mechanimsm are copied from standard devices ioctl.
  30 * We have the list of command plus a structure descibing the
  31 * data exchanged...
  32 * Note that to add these ioctl, I was obliged to modify :
  33 *      # net/core/dev.c (two place + add include)
  34 *      # net/ipv4/af_inet.c (one place + add include)
  35 *
  36 * /proc/net/wireless is a copy of /proc/net/dev.
  37 * We have a structure for data passed from the driver to /proc/net/wireless
  38 * Too add this, I've modified :
  39 *      # net/core/dev.c (two other places)
  40 *      # include/linux/netdevice.h (one place)
  41 *      # include/linux/proc_fs.h (one place)
  42 *
  43 * New driver API (2002 -> onward) :
  44 * -------------------------------
  45 * This file is only concerned with the user space API and common definitions.
  46 * The new driver API is defined and documented in :
  47 *      # include/net/iw_handler.h
  48 *
  49 * Note as well that /proc/net/wireless implementation has now moved in :
  50 *      # net/core/wireless.c
  51 *
  52 * Wireless Events (2002 -> onward) :
  53 * --------------------------------
  54 * Events are defined at the end of this file, and implemented in :
  55 *      # net/core/wireless.c
  56 *
  57 * Other comments :
  58 * --------------
  59 * Do not add here things that are redundant with other mechanisms
  60 * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
  61 * wireless specific.
  62 *
  63 * These wireless extensions are not magic : each driver has to provide
  64 * support for them...
  65 *
  66 * IMPORTANT NOTE : As everything in the kernel, this is very much a
  67 * work in progress. Contact me if you have ideas of improvements...
  68 */
  69
  70/***************************** INCLUDES *****************************/
  71
  72#include <linux/types.h>                /* for __u* and __s* typedefs */
  73#include <linux/socket.h>               /* for "struct sockaddr" et al  */
  74#include <linux/if.h>                   /* for IFNAMSIZ and co... */
  75
  76/***************************** VERSION *****************************/
  77/*
  78 * This constant is used to know the availability of the wireless
  79 * extensions and to know which version of wireless extensions it is
  80 * (there is some stuff that will be added in the future...)
  81 * I just plan to increment with each new version.
  82 */
  83#define WIRELESS_EXT    22
  84
  85/*
  86 * Changes :
  87 *
  88 * V2 to V3
  89 * --------
  90 *      Alan Cox start some incompatibles changes. I've integrated a bit more.
  91 *      - Encryption renamed to Encode to avoid US regulation problems
  92 *      - Frequency changed from float to struct to avoid problems on old 386
  93 *
  94 * V3 to V4
  95 * --------
  96 *      - Add sensitivity
  97 *
  98 * V4 to V5
  99 * --------
 100 *      - Missing encoding definitions in range
 101 *      - Access points stuff
 102 *
 103 * V5 to V6
 104 * --------
 105 *      - 802.11 support (ESSID ioctls)
 106 *
 107 * V6 to V7
 108 * --------
 109 *      - define IW_ESSID_MAX_SIZE and IW_MAX_AP
 110 *
 111 * V7 to V8
 112 * --------
 113 *      - Changed my e-mail address
 114 *      - More 802.11 support (nickname, rate, rts, frag)
 115 *      - List index in frequencies
 116 *
 117 * V8 to V9
 118 * --------
 119 *      - Support for 'mode of operation' (ad-hoc, managed...)
 120 *      - Support for unicast and multicast power saving
 121 *      - Change encoding to support larger tokens (>64 bits)
 122 *      - Updated iw_params (disable, flags) and use it for NWID
 123 *      - Extracted iw_point from iwreq for clarity
 124 *
 125 * V9 to V10
 126 * ---------
 127 *      - Add PM capability to range structure
 128 *      - Add PM modifier : MAX/MIN/RELATIVE
 129 *      - Add encoding option : IW_ENCODE_NOKEY
 130 *      - Add TxPower ioctls (work like TxRate)
 131 *
 132 * V10 to V11
 133 * ----------
 134 *      - Add WE version in range (help backward/forward compatibility)
 135 *      - Add retry ioctls (work like PM)
 136 *
 137 * V11 to V12
 138 * ----------
 139 *      - Add SIOCSIWSTATS to get /proc/net/wireless programatically
 140 *      - Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space
 141 *      - Add new statistics (frag, retry, beacon)
 142 *      - Add average quality (for user space calibration)
 143 *
 144 * V12 to V13
 145 * ----------
 146 *      - Document creation of new driver API.
 147 *      - Extract union iwreq_data from struct iwreq (for new driver API).
 148 *      - Rename SIOCSIWNAME as SIOCSIWCOMMIT
 149 *
 150 * V13 to V14
 151 * ----------
 152 *      - Wireless Events support : define struct iw_event
 153 *      - Define additional specific event numbers
 154 *      - Add "addr" and "param" fields in union iwreq_data
 155 *      - AP scanning stuff (SIOCSIWSCAN and friends)
 156 *
 157 * V14 to V15
 158 * ----------
 159 *      - Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg
 160 *      - Make struct iw_freq signed (both m & e), add explicit padding
 161 *      - Add IWEVCUSTOM for driver specific event/scanning token
 162 *      - Add IW_MAX_GET_SPY for driver returning a lot of addresses
 163 *      - Add IW_TXPOW_RANGE for range of Tx Powers
 164 *      - Add IWEVREGISTERED & IWEVEXPIRED events for Access Points
 165 *      - Add IW_MODE_MONITOR for passive monitor
 166 *
 167 * V15 to V16
 168 * ----------
 169 *      - Increase the number of bitrates in iw_range to 32 (for 802.11g)
 170 *      - Increase the number of frequencies in iw_range to 32 (for 802.11b+a)
 171 *      - Reshuffle struct iw_range for increases, add filler
 172 *      - Increase IW_MAX_AP to 64 for driver returning a lot of addresses
 173 *      - Remove IW_MAX_GET_SPY because conflict with enhanced spy support
 174 *      - Add SIOCSIWTHRSPY/SIOCGIWTHRSPY and "struct iw_thrspy"
 175 *      - Add IW_ENCODE_TEMP and iw_range->encoding_login_index
 176 *
 177 * V16 to V17
 178 * ----------
 179 *      - Add flags to frequency -> auto/fixed
 180 *      - Document (struct iw_quality *)->updated, add new flags (INVALID)
 181 *      - Wireless Event capability in struct iw_range
 182 *      - Add support for relative TxPower (yick !)
 183 *
 184 * V17 to V18 (From Jouni Malinen <j@w1.fi>)
 185 * ----------
 186 *      - Add support for WPA/WPA2
 187 *      - Add extended encoding configuration (SIOCSIWENCODEEXT and
 188 *        SIOCGIWENCODEEXT)
 189 *      - Add SIOCSIWGENIE/SIOCGIWGENIE
 190 *      - Add SIOCSIWMLME
 191 *      - Add SIOCSIWPMKSA
 192 *      - Add struct iw_range bit field for supported encoding capabilities
 193 *      - Add optional scan request parameters for SIOCSIWSCAN
 194 *      - Add SIOCSIWAUTH/SIOCGIWAUTH for setting authentication and WPA
 195 *        related parameters (extensible up to 4096 parameter values)
 196 *      - Add wireless events: IWEVGENIE, IWEVMICHAELMICFAILURE,
 197 *        IWEVASSOCREQIE, IWEVASSOCRESPIE, IWEVPMKIDCAND
 198 *
 199 * V18 to V19
 200 * ----------
 201 *      - Remove (struct iw_point *)->pointer from events and streams
 202 *      - Remove header includes to help user space
 203 *      - Increase IW_ENCODING_TOKEN_MAX from 32 to 64
 204 *      - Add IW_QUAL_ALL_UPDATED and IW_QUAL_ALL_INVALID macros
 205 *      - Add explicit flag to tell stats are in dBm : IW_QUAL_DBM
 206 *      - Add IW_IOCTL_IDX() and IW_EVENT_IDX() macros
 207 *
 208 * V19 to V20
 209 * ----------
 210 *      - RtNetlink requests support (SET/GET)
 211 *
 212 * V20 to V21
 213 * ----------
 214 *      - Remove (struct net_device *)->get_wireless_stats()
 215 *      - Change length in ESSID and NICK to strlen() instead of strlen()+1
 216 *      - Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
 217 *      - Power/Retry relative values no longer * 100000
 218 *      - Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
 219 *
 220 * V21 to V22
 221 * ----------
 222 *      - Prevent leaking of kernel space in stream on 64 bits.
 223 */
 224
 225/**************************** CONSTANTS ****************************/
 226
 227/* -------------------------- IOCTL LIST -------------------------- */
 228
 229/* Wireless Identification */
 230#define SIOCSIWCOMMIT   0x8B00          /* Commit pending changes to driver */
 231#define SIOCGIWNAME     0x8B01          /* get name == wireless protocol */
 232/* SIOCGIWNAME is used to verify the presence of Wireless Extensions.
 233 * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"...
 234 * Don't put the name of your driver there, it's useless. */
 235
 236/* Basic operations */
 237#define SIOCSIWNWID     0x8B02          /* set network id (pre-802.11) */
 238#define SIOCGIWNWID     0x8B03          /* get network id (the cell) */
 239#define SIOCSIWFREQ     0x8B04          /* set channel/frequency (Hz) */
 240#define SIOCGIWFREQ     0x8B05          /* get channel/frequency (Hz) */
 241#define SIOCSIWMODE     0x8B06          /* set operation mode */
 242#define SIOCGIWMODE     0x8B07          /* get operation mode */
 243#define SIOCSIWSENS     0x8B08          /* set sensitivity (dBm) */
 244#define SIOCGIWSENS     0x8B09          /* get sensitivity (dBm) */
 245
 246/* Informative stuff */
 247#define SIOCSIWRANGE    0x8B0A          /* Unused */
 248#define SIOCGIWRANGE    0x8B0B          /* Get range of parameters */
 249#define SIOCSIWPRIV     0x8B0C          /* Unused */
 250#define SIOCGIWPRIV     0x8B0D          /* get private ioctl interface info */
 251#define SIOCSIWSTATS    0x8B0E          /* Unused */
 252#define SIOCGIWSTATS    0x8B0F          /* Get /proc/net/wireless stats */
 253/* SIOCGIWSTATS is strictly used between user space and the kernel, and
 254 * is never passed to the driver (i.e. the driver will never see it). */
 255
 256/* Spy support (statistics per MAC address - used for Mobile IP support) */
 257#define SIOCSIWSPY      0x8B10          /* set spy addresses */
 258#define SIOCGIWSPY      0x8B11          /* get spy info (quality of link) */
 259#define SIOCSIWTHRSPY   0x8B12          /* set spy threshold (spy event) */
 260#define SIOCGIWTHRSPY   0x8B13          /* get spy threshold */
 261
 262/* Access Point manipulation */
 263#define SIOCSIWAP       0x8B14          /* set access point MAC addresses */
 264#define SIOCGIWAP       0x8B15          /* get access point MAC addresses */
 265#define SIOCGIWAPLIST   0x8B17          /* Deprecated in favor of scanning */
 266#define SIOCSIWSCAN     0x8B18          /* trigger scanning (list cells) */
 267#define SIOCGIWSCAN     0x8B19          /* get scanning results */
 268
 269/* 802.11 specific support */
 270#define SIOCSIWESSID    0x8B1A          /* set ESSID (network name) */
 271#define SIOCGIWESSID    0x8B1B          /* get ESSID */
 272#define SIOCSIWNICKN    0x8B1C          /* set node name/nickname */
 273#define SIOCGIWNICKN    0x8B1D          /* get node name/nickname */
 274/* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
 275 * within the 'iwreq' structure, so we need to use the 'data' member to
 276 * point to a string in user space, like it is done for RANGE... */
 277
 278/* Other parameters useful in 802.11 and some other devices */
 279#define SIOCSIWRATE     0x8B20          /* set default bit rate (bps) */
 280#define SIOCGIWRATE     0x8B21          /* get default bit rate (bps) */
 281#define SIOCSIWRTS      0x8B22          /* set RTS/CTS threshold (bytes) */
 282#define SIOCGIWRTS      0x8B23          /* get RTS/CTS threshold (bytes) */
 283#define SIOCSIWFRAG     0x8B24          /* set fragmentation thr (bytes) */
 284#define SIOCGIWFRAG     0x8B25          /* get fragmentation thr (bytes) */
 285#define SIOCSIWTXPOW    0x8B26          /* set transmit power (dBm) */
 286#define SIOCGIWTXPOW    0x8B27          /* get transmit power (dBm) */
 287#define SIOCSIWRETRY    0x8B28          /* set retry limits and lifetime */
 288#define SIOCGIWRETRY    0x8B29          /* get retry limits and lifetime */
 289
 290/* Encoding stuff (scrambling, hardware security, WEP...) */
 291#define SIOCSIWENCODE   0x8B2A          /* set encoding token & mode */
 292#define SIOCGIWENCODE   0x8B2B          /* get encoding token & mode */
 293/* Power saving stuff (power management, unicast and multicast) */
 294#define SIOCSIWPOWER    0x8B2C          /* set Power Management settings */
 295#define SIOCGIWPOWER    0x8B2D          /* get Power Management settings */
 296
 297/* WPA : Generic IEEE 802.11 informatiom element (e.g., for WPA/RSN/WMM).
 298 * This ioctl uses struct iw_point and data buffer that includes IE id and len
 299 * fields. More than one IE may be included in the request. Setting the generic
 300 * IE to empty buffer (len=0) removes the generic IE from the driver. Drivers
 301 * are allowed to generate their own WPA/RSN IEs, but in these cases, drivers
 302 * are required to report the used IE as a wireless event, e.g., when
 303 * associating with an AP. */
 304#define SIOCSIWGENIE    0x8B30          /* set generic IE */
 305#define SIOCGIWGENIE    0x8B31          /* get generic IE */
 306
 307/* WPA : IEEE 802.11 MLME requests */
 308#define SIOCSIWMLME     0x8B16          /* request MLME operation; uses
 309                                         * struct iw_mlme */
 310/* WPA : Authentication mode parameters */
 311#define SIOCSIWAUTH     0x8B32          /* set authentication mode params */
 312#define SIOCGIWAUTH     0x8B33          /* get authentication mode params */
 313
 314/* WPA : Extended version of encoding configuration */
 315#define SIOCSIWENCODEEXT 0x8B34         /* set encoding token & mode */
 316#define SIOCGIWENCODEEXT 0x8B35         /* get encoding token & mode */
 317
 318/* WPA2 : PMKSA cache management */
 319#define SIOCSIWPMKSA    0x8B36          /* PMKSA cache operation */
 320
 321/* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
 322
 323/* These 32 ioctl are wireless device private, for 16 commands.
 324 * Each driver is free to use them for whatever purpose it chooses,
 325 * however the driver *must* export the description of those ioctls
 326 * with SIOCGIWPRIV and *must* use arguments as defined below.
 327 * If you don't follow those rules, DaveM is going to hate you (reason :
 328 * it make mixed 32/64bit operation impossible).
 329 */
 330#define SIOCIWFIRSTPRIV 0x8BE0
 331#define SIOCIWLASTPRIV  0x8BFF
 332/* Previously, we were using SIOCDEVPRIVATE, but we now have our
 333 * separate range because of collisions with other tools such as
 334 * 'mii-tool'.
 335 * We now have 32 commands, so a bit more space ;-).
 336 * Also, all 'even' commands are only usable by root and don't return the
 337 * content of ifr/iwr to user (but you are not obliged to use the set/get
 338 * convention, just use every other two command). More details in iwpriv.c.
 339 * And I repeat : you are not forced to use them with iwpriv, but you
 340 * must be compliant with it.
 341 */
 342
 343/* ------------------------- IOCTL STUFF ------------------------- */
 344
 345/* The first and the last (range) */
 346#define SIOCIWFIRST     0x8B00
 347#define SIOCIWLAST      SIOCIWLASTPRIV          /* 0x8BFF */
 348#define IW_IOCTL_IDX(cmd)       ((cmd) - SIOCIWFIRST)
 349
 350/* Odd : get (world access), even : set (root access) */
 351#define IW_IS_SET(cmd)  (!((cmd) & 0x1))
 352#define IW_IS_GET(cmd)  ((cmd) & 0x1)
 353
 354/* ----------------------- WIRELESS EVENTS ----------------------- */
 355/* Those are *NOT* ioctls, do not issue request on them !!! */
 356/* Most events use the same identifier as ioctl requests */
 357
 358#define IWEVTXDROP      0x8C00          /* Packet dropped to excessive retry */
 359#define IWEVQUAL        0x8C01          /* Quality part of statistics (scan) */
 360#define IWEVCUSTOM      0x8C02          /* Driver specific ascii string */
 361#define IWEVREGISTERED  0x8C03          /* Discovered a new node (AP mode) */
 362#define IWEVEXPIRED     0x8C04          /* Expired a node (AP mode) */
 363#define IWEVGENIE       0x8C05          /* Generic IE (WPA, RSN, WMM, ..)
 364                                         * (scan results); This includes id and
 365                                         * length fields. One IWEVGENIE may
 366                                         * contain more than one IE. Scan
 367                                         * results may contain one or more
 368                                         * IWEVGENIE events. */
 369#define IWEVMICHAELMICFAILURE 0x8C06    /* Michael MIC failure
 370                                         * (struct iw_michaelmicfailure)
 371                                         */
 372#define IWEVASSOCREQIE  0x8C07          /* IEs used in (Re)Association Request.
 373                                         * The data includes id and length
 374                                         * fields and may contain more than one
 375                                         * IE. This event is required in
 376                                         * Managed mode if the driver
 377                                         * generates its own WPA/RSN IE. This
 378                                         * should be sent just before
 379                                         * IWEVREGISTERED event for the
 380                                         * association. */
 381#define IWEVASSOCRESPIE 0x8C08          /* IEs used in (Re)Association
 382                                         * Response. The data includes id and
 383                                         * length fields and may contain more
 384                                         * than one IE. This may be sent
 385                                         * between IWEVASSOCREQIE and
 386                                         * IWEVREGISTERED events for the
 387                                         * association. */
 388#define IWEVPMKIDCAND   0x8C09          /* PMKID candidate for RSN
 389                                         * pre-authentication
 390                                         * (struct iw_pmkid_cand) */
 391
 392#define IWEVFIRST       0x8C00
 393#define IW_EVENT_IDX(cmd)       ((cmd) - IWEVFIRST)
 394
 395/* ------------------------- PRIVATE INFO ------------------------- */
 396/*
 397 * The following is used with SIOCGIWPRIV. It allow a driver to define
 398 * the interface (name, type of data) for its private ioctl.
 399 * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV
 400 */
 401
 402#define IW_PRIV_TYPE_MASK       0x7000  /* Type of arguments */
 403#define IW_PRIV_TYPE_NONE       0x0000
 404#define IW_PRIV_TYPE_BYTE       0x1000  /* Char as number */
 405#define IW_PRIV_TYPE_CHAR       0x2000  /* Char as character */
 406#define IW_PRIV_TYPE_INT        0x4000  /* 32 bits int */
 407#define IW_PRIV_TYPE_FLOAT      0x5000  /* struct iw_freq */
 408#define IW_PRIV_TYPE_ADDR       0x6000  /* struct sockaddr */
 409
 410#define IW_PRIV_SIZE_FIXED      0x0800  /* Variable or fixed number of args */
 411
 412#define IW_PRIV_SIZE_MASK       0x07FF  /* Max number of those args */
 413
 414/*
 415 * Note : if the number of args is fixed and the size < 16 octets,
 416 * instead of passing a pointer we will put args in the iwreq struct...
 417 */
 418
 419/* ----------------------- OTHER CONSTANTS ----------------------- */
 420
 421/* Maximum frequencies in the range struct */
 422#define IW_MAX_FREQUENCIES      32
 423/* Note : if you have something like 80 frequencies,
 424 * don't increase this constant and don't fill the frequency list.
 425 * The user will be able to set by channel anyway... */
 426
 427/* Maximum bit rates in the range struct */
 428#define IW_MAX_BITRATES         32
 429
 430/* Maximum tx powers in the range struct */
 431#define IW_MAX_TXPOWER          8
 432/* Note : if you more than 8 TXPowers, just set the max and min or
 433 * a few of them in the struct iw_range. */
 434
 435/* Maximum of address that you may set with SPY */
 436#define IW_MAX_SPY              8
 437
 438/* Maximum of address that you may get in the
 439   list of access points in range */
 440#define IW_MAX_AP               64
 441
 442/* Maximum size of the ESSID and NICKN strings */
 443#define IW_ESSID_MAX_SIZE       32
 444
 445/* Modes of operation */
 446#define IW_MODE_AUTO    0       /* Let the driver decides */
 447#define IW_MODE_ADHOC   1       /* Single cell network */
 448#define IW_MODE_INFRA   2       /* Multi cell network, roaming, ... */
 449#define IW_MODE_MASTER  3       /* Synchronisation master or Access Point */
 450#define IW_MODE_REPEAT  4       /* Wireless Repeater (forwarder) */
 451#define IW_MODE_SECOND  5       /* Secondary master/repeater (backup) */
 452#define IW_MODE_MONITOR 6       /* Passive monitor (listen only) */
 453#define IW_MODE_MESH    7       /* Mesh (IEEE 802.11s) network */
 454
 455/* Statistics flags (bitmask in updated) */
 456#define IW_QUAL_QUAL_UPDATED    0x01    /* Value was updated since last read */
 457#define IW_QUAL_LEVEL_UPDATED   0x02
 458#define IW_QUAL_NOISE_UPDATED   0x04
 459#define IW_QUAL_ALL_UPDATED     0x07
 460#define IW_QUAL_DBM             0x08    /* Level + Noise are dBm */
 461#define IW_QUAL_QUAL_INVALID    0x10    /* Driver doesn't provide value */
 462#define IW_QUAL_LEVEL_INVALID   0x20
 463#define IW_QUAL_NOISE_INVALID   0x40
 464#define IW_QUAL_RCPI            0x80    /* Level + Noise are 802.11k RCPI */
 465#define IW_QUAL_ALL_INVALID     0x70
 466
 467/* Frequency flags */
 468#define IW_FREQ_AUTO            0x00    /* Let the driver decides */
 469#define IW_FREQ_FIXED           0x01    /* Force a specific value */
 470
 471/* Maximum number of size of encoding token available
 472 * they are listed in the range structure */
 473#define IW_MAX_ENCODING_SIZES   8
 474
 475/* Maximum size of the encoding token in bytes */
 476#define IW_ENCODING_TOKEN_MAX   64      /* 512 bits (for now) */
 477
 478/* Flags for encoding (along with the token) */
 479#define IW_ENCODE_INDEX         0x00FF  /* Token index (if needed) */
 480#define IW_ENCODE_FLAGS         0xFF00  /* Flags defined below */
 481#define IW_ENCODE_MODE          0xF000  /* Modes defined below */
 482#define IW_ENCODE_DISABLED      0x8000  /* Encoding disabled */
 483#define IW_ENCODE_ENABLED       0x0000  /* Encoding enabled */
 484#define IW_ENCODE_RESTRICTED    0x4000  /* Refuse non-encoded packets */
 485#define IW_ENCODE_OPEN          0x2000  /* Accept non-encoded packets */
 486#define IW_ENCODE_NOKEY         0x0800  /* Key is write only, so not present */
 487#define IW_ENCODE_TEMP          0x0400  /* Temporary key */
 488
 489/* Power management flags available (along with the value, if any) */
 490#define IW_POWER_ON             0x0000  /* No details... */
 491#define IW_POWER_TYPE           0xF000  /* Type of parameter */
 492#define IW_POWER_PERIOD         0x1000  /* Value is a period/duration of  */
 493#define IW_POWER_TIMEOUT        0x2000  /* Value is a timeout (to go asleep) */
 494#define IW_POWER_MODE           0x0F00  /* Power Management mode */
 495#define IW_POWER_UNICAST_R      0x0100  /* Receive only unicast messages */
 496#define IW_POWER_MULTICAST_R    0x0200  /* Receive only multicast messages */
 497#define IW_POWER_ALL_R          0x0300  /* Receive all messages though PM */
 498#define IW_POWER_FORCE_S        0x0400  /* Force PM procedure for sending unicast */
 499#define IW_POWER_REPEATER       0x0800  /* Repeat broadcast messages in PM period */
 500#define IW_POWER_MODIFIER       0x000F  /* Modify a parameter */
 501#define IW_POWER_MIN            0x0001  /* Value is a minimum  */
 502#define IW_POWER_MAX            0x0002  /* Value is a maximum */
 503#define IW_POWER_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
 504
 505/* Transmit Power flags available */
 506#define IW_TXPOW_TYPE           0x00FF  /* Type of value */
 507#define IW_TXPOW_DBM            0x0000  /* Value is in dBm */
 508#define IW_TXPOW_MWATT          0x0001  /* Value is in mW */
 509#define IW_TXPOW_RELATIVE       0x0002  /* Value is in arbitrary units */
 510#define IW_TXPOW_RANGE          0x1000  /* Range of value between min/max */
 511
 512/* Retry limits and lifetime flags available */
 513#define IW_RETRY_ON             0x0000  /* No details... */
 514#define IW_RETRY_TYPE           0xF000  /* Type of parameter */
 515#define IW_RETRY_LIMIT          0x1000  /* Maximum number of retries*/
 516#define IW_RETRY_LIFETIME       0x2000  /* Maximum duration of retries in us */
 517#define IW_RETRY_MODIFIER       0x00FF  /* Modify a parameter */
 518#define IW_RETRY_MIN            0x0001  /* Value is a minimum  */
 519#define IW_RETRY_MAX            0x0002  /* Value is a maximum */
 520#define IW_RETRY_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
 521#define IW_RETRY_SHORT          0x0010  /* Value is for short packets  */
 522#define IW_RETRY_LONG           0x0020  /* Value is for long packets */
 523
 524/* Scanning request flags */
 525#define IW_SCAN_DEFAULT         0x0000  /* Default scan of the driver */
 526#define IW_SCAN_ALL_ESSID       0x0001  /* Scan all ESSIDs */
 527#define IW_SCAN_THIS_ESSID      0x0002  /* Scan only this ESSID */
 528#define IW_SCAN_ALL_FREQ        0x0004  /* Scan all Frequencies */
 529#define IW_SCAN_THIS_FREQ       0x0008  /* Scan only this Frequency */
 530#define IW_SCAN_ALL_MODE        0x0010  /* Scan all Modes */
 531#define IW_SCAN_THIS_MODE       0x0020  /* Scan only this Mode */
 532#define IW_SCAN_ALL_RATE        0x0040  /* Scan all Bit-Rates */
 533#define IW_SCAN_THIS_RATE       0x0080  /* Scan only this Bit-Rate */
 534/* struct iw_scan_req scan_type */
 535#define IW_SCAN_TYPE_ACTIVE 0
 536#define IW_SCAN_TYPE_PASSIVE 1
 537/* Maximum size of returned data */
 538#define IW_SCAN_MAX_DATA        4096    /* In bytes */
 539
 540/* Scan capability flags - in (struct iw_range *)->scan_capa */
 541#define IW_SCAN_CAPA_NONE               0x00
 542#define IW_SCAN_CAPA_ESSID              0x01
 543#define IW_SCAN_CAPA_BSSID              0x02
 544#define IW_SCAN_CAPA_CHANNEL    0x04
 545#define IW_SCAN_CAPA_MODE               0x08
 546#define IW_SCAN_CAPA_RATE               0x10
 547#define IW_SCAN_CAPA_TYPE               0x20
 548#define IW_SCAN_CAPA_TIME               0x40
 549
 550/* Max number of char in custom event - use multiple of them if needed */
 551#define IW_CUSTOM_MAX           256     /* In bytes */
 552
 553/* Generic information element */
 554#define IW_GENERIC_IE_MAX       1024
 555
 556/* MLME requests (SIOCSIWMLME / struct iw_mlme) */
 557#define IW_MLME_DEAUTH          0
 558#define IW_MLME_DISASSOC        1
 559#define IW_MLME_AUTH            2
 560#define IW_MLME_ASSOC           3
 561
 562/* SIOCSIWAUTH/SIOCGIWAUTH struct iw_param flags */
 563#define IW_AUTH_INDEX           0x0FFF
 564#define IW_AUTH_FLAGS           0xF000
 565/* SIOCSIWAUTH/SIOCGIWAUTH parameters (0 .. 4095)
 566 * (IW_AUTH_INDEX mask in struct iw_param flags; this is the index of the
 567 * parameter that is being set/get to; value will be read/written to
 568 * struct iw_param value field) */
 569#define IW_AUTH_WPA_VERSION             0
 570#define IW_AUTH_CIPHER_PAIRWISE         1
 571#define IW_AUTH_CIPHER_GROUP            2
 572#define IW_AUTH_KEY_MGMT                3
 573#define IW_AUTH_TKIP_COUNTERMEASURES    4
 574#define IW_AUTH_DROP_UNENCRYPTED        5
 575#define IW_AUTH_80211_AUTH_ALG          6
 576#define IW_AUTH_WPA_ENABLED             7
 577#define IW_AUTH_RX_UNENCRYPTED_EAPOL    8
 578#define IW_AUTH_ROAMING_CONTROL         9
 579#define IW_AUTH_PRIVACY_INVOKED         10
 580
 581/* IW_AUTH_WPA_VERSION values (bit field) */
 582#define IW_AUTH_WPA_VERSION_DISABLED    0x00000001
 583#define IW_AUTH_WPA_VERSION_WPA         0x00000002
 584#define IW_AUTH_WPA_VERSION_WPA2        0x00000004
 585
 586/* IW_AUTH_PAIRWISE_CIPHER and IW_AUTH_GROUP_CIPHER values (bit field) */
 587#define IW_AUTH_CIPHER_NONE     0x00000001
 588#define IW_AUTH_CIPHER_WEP40    0x00000002
 589#define IW_AUTH_CIPHER_TKIP     0x00000004
 590#define IW_AUTH_CIPHER_CCMP     0x00000008
 591#define IW_AUTH_CIPHER_WEP104   0x00000010
 592
 593/* IW_AUTH_KEY_MGMT values (bit field) */
 594#define IW_AUTH_KEY_MGMT_802_1X 1
 595#define IW_AUTH_KEY_MGMT_PSK    2
 596
 597/* IW_AUTH_80211_AUTH_ALG values (bit field) */
 598#define IW_AUTH_ALG_OPEN_SYSTEM 0x00000001
 599#define IW_AUTH_ALG_SHARED_KEY  0x00000002
 600#define IW_AUTH_ALG_LEAP        0x00000004
 601
 602/* IW_AUTH_ROAMING_CONTROL values */
 603#define IW_AUTH_ROAMING_ENABLE  0       /* driver/firmware based roaming */
 604#define IW_AUTH_ROAMING_DISABLE 1       /* user space program used for roaming
 605                                         * control */
 606
 607/* SIOCSIWENCODEEXT definitions */
 608#define IW_ENCODE_SEQ_MAX_SIZE  8
 609/* struct iw_encode_ext ->alg */
 610#define IW_ENCODE_ALG_NONE      0
 611#define IW_ENCODE_ALG_WEP       1
 612#define IW_ENCODE_ALG_TKIP      2
 613#define IW_ENCODE_ALG_CCMP      3
 614#define IW_ENCODE_ALG_PMK       4
 615/* struct iw_encode_ext ->ext_flags */
 616#define IW_ENCODE_EXT_TX_SEQ_VALID      0x00000001
 617#define IW_ENCODE_EXT_RX_SEQ_VALID      0x00000002
 618#define IW_ENCODE_EXT_GROUP_KEY         0x00000004
 619#define IW_ENCODE_EXT_SET_TX_KEY        0x00000008
 620
 621/* IWEVMICHAELMICFAILURE : struct iw_michaelmicfailure ->flags */
 622#define IW_MICFAILURE_KEY_ID    0x00000003 /* Key ID 0..3 */
 623#define IW_MICFAILURE_GROUP     0x00000004
 624#define IW_MICFAILURE_PAIRWISE  0x00000008
 625#define IW_MICFAILURE_STAKEY    0x00000010
 626#define IW_MICFAILURE_COUNT     0x00000060 /* 1 or 2 (0 = count not supported)
 627                                            */
 628
 629/* Bit field values for enc_capa in struct iw_range */
 630#define IW_ENC_CAPA_WPA         0x00000001
 631#define IW_ENC_CAPA_WPA2        0x00000002
 632#define IW_ENC_CAPA_CIPHER_TKIP 0x00000004
 633#define IW_ENC_CAPA_CIPHER_CCMP 0x00000008
 634#define IW_ENC_CAPA_4WAY_HANDSHAKE      0x00000010
 635
 636/* Event capability macros - in (struct iw_range *)->event_capa
 637 * Because we have more than 32 possible events, we use an array of
 638 * 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */
 639#define IW_EVENT_CAPA_BASE(cmd)         ((cmd >= SIOCIWFIRSTPRIV) ? \
 640                                         (cmd - SIOCIWFIRSTPRIV + 0x60) : \
 641                                         (cmd - SIOCSIWCOMMIT))
 642#define IW_EVENT_CAPA_INDEX(cmd)        (IW_EVENT_CAPA_BASE(cmd) >> 5)
 643#define IW_EVENT_CAPA_MASK(cmd)         (1 << (IW_EVENT_CAPA_BASE(cmd) & 0x1F))
 644/* Event capability constants - event autogenerated by the kernel
 645 * This list is valid for most 802.11 devices, customise as needed... */
 646#define IW_EVENT_CAPA_K_0       (IW_EVENT_CAPA_MASK(0x8B04) | \
 647                                 IW_EVENT_CAPA_MASK(0x8B06) | \
 648                                 IW_EVENT_CAPA_MASK(0x8B1A))
 649#define IW_EVENT_CAPA_K_1       (IW_EVENT_CAPA_MASK(0x8B2A))
 650/* "Easy" macro to set events in iw_range (less efficient) */
 651#define IW_EVENT_CAPA_SET(event_capa, cmd) (event_capa[IW_EVENT_CAPA_INDEX(cmd)] |= IW_EVENT_CAPA_MASK(cmd))
 652#define IW_EVENT_CAPA_SET_KERNEL(event_capa) {event_capa[0] |= IW_EVENT_CAPA_K_0; event_capa[1] |= IW_EVENT_CAPA_K_1; }
 653
 654
 655/****************************** TYPES ******************************/
 656
 657/* --------------------------- SUBTYPES --------------------------- */
 658/*
 659 *      Generic format for most parameters that fit in an int
 660 */
 661struct  iw_param
 662{
 663  __s32         value;          /* The value of the parameter itself */
 664  __u8          fixed;          /* Hardware should not use auto select */
 665  __u8          disabled;       /* Disable the feature */
 666  __u16         flags;          /* Various specifc flags (if any) */
 667};
 668
 669/*
 670 *      For all data larger than 16 octets, we need to use a
 671 *      pointer to memory allocated in user space.
 672 */
 673struct  iw_point
 674{
 675  void __user   *pointer;       /* Pointer to the data  (in user space) */
 676  __u16         length;         /* number of fields or size in bytes */
 677  __u16         flags;          /* Optional params */
 678};
 679
 680#ifdef __KERNEL__
 681#ifdef CONFIG_COMPAT
 682
 683#include <linux/compat.h>
 684
 685struct compat_iw_point {
 686        compat_caddr_t pointer;
 687        __u16 length;
 688        __u16 flags;
 689};
 690#endif
 691#endif
 692
 693/*
 694 *      A frequency
 695 *      For numbers lower than 10^9, we encode the number in 'm' and
 696 *      set 'e' to 0
 697 *      For number greater than 10^9, we divide it by the lowest power
 698 *      of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
 699 *      The power of 10 is in 'e', the result of the division is in 'm'.
 700 */
 701struct  iw_freq
 702{
 703        __s32           m;              /* Mantissa */
 704        __s16           e;              /* Exponent */
 705        __u8            i;              /* List index (when in range struct) */
 706        __u8            flags;          /* Flags (fixed/auto) */
 707};
 708
 709/*
 710 *      Quality of the link
 711 */
 712struct  iw_quality
 713{
 714        __u8            qual;           /* link quality (%retries, SNR,
 715                                           %missed beacons or better...) */
 716        __u8            level;          /* signal level (dBm) */
 717        __u8            noise;          /* noise level (dBm) */
 718        __u8            updated;        /* Flags to know if updated */
 719};
 720
 721/*
 722 *      Packet discarded in the wireless adapter due to
 723 *      "wireless" specific problems...
 724 *      Note : the list of counter and statistics in net_device_stats
 725 *      is already pretty exhaustive, and you should use that first.
 726 *      This is only additional stats...
 727 */
 728struct  iw_discarded
 729{
 730        __u32           nwid;           /* Rx : Wrong nwid/essid */
 731        __u32           code;           /* Rx : Unable to code/decode (WEP) */
 732        __u32           fragment;       /* Rx : Can't perform MAC reassembly */
 733        __u32           retries;        /* Tx : Max MAC retries num reached */
 734        __u32           misc;           /* Others cases */
 735};
 736
 737/*
 738 *      Packet/Time period missed in the wireless adapter due to
 739 *      "wireless" specific problems...
 740 */
 741struct  iw_missed
 742{
 743        __u32           beacon;         /* Missed beacons/superframe */
 744};
 745
 746/*
 747 *      Quality range (for spy threshold)
 748 */
 749struct  iw_thrspy
 750{
 751        struct sockaddr         addr;           /* Source address (hw/mac) */
 752        struct iw_quality       qual;           /* Quality of the link */
 753        struct iw_quality       low;            /* Low threshold */
 754        struct iw_quality       high;           /* High threshold */
 755};
 756
 757/*
 758 *      Optional data for scan request
 759 *
 760 *      Note: these optional parameters are controlling parameters for the
 761 *      scanning behavior, these do not apply to getting scan results
 762 *      (SIOCGIWSCAN). Drivers are expected to keep a local BSS table and
 763 *      provide a merged results with all BSSes even if the previous scan
 764 *      request limited scanning to a subset, e.g., by specifying an SSID.
 765 *      Especially, scan results are required to include an entry for the
 766 *      current BSS if the driver is in Managed mode and associated with an AP.
 767 */
 768struct  iw_scan_req
 769{
 770        __u8            scan_type; /* IW_SCAN_TYPE_{ACTIVE,PASSIVE} */
 771        __u8            essid_len;
 772        __u8            num_channels; /* num entries in channel_list;
 773                                       * 0 = scan all allowed channels */
 774        __u8            flags; /* reserved as padding; use zero, this may
 775                                * be used in the future for adding flags
 776                                * to request different scan behavior */
 777        struct sockaddr bssid; /* ff:ff:ff:ff:ff:ff for broadcast BSSID or
 778                                * individual address of a specific BSS */
 779
 780        /*
 781         * Use this ESSID if IW_SCAN_THIS_ESSID flag is used instead of using
 782         * the current ESSID. This allows scan requests for specific ESSID
 783         * without having to change the current ESSID and potentially breaking
 784         * the current association.
 785         */
 786        __u8            essid[IW_ESSID_MAX_SIZE];
 787
 788        /*
 789         * Optional parameters for changing the default scanning behavior.
 790         * These are based on the MLME-SCAN.request from IEEE Std 802.11.
 791         * TU is 1.024 ms. If these are set to 0, driver is expected to use
 792         * reasonable default values. min_channel_time defines the time that
 793         * will be used to wait for the first reply on each channel. If no
 794         * replies are received, next channel will be scanned after this. If
 795         * replies are received, total time waited on the channel is defined by
 796         * max_channel_time.
 797         */
 798        __u32           min_channel_time; /* in TU */
 799        __u32           max_channel_time; /* in TU */
 800
 801        struct iw_freq  channel_list[IW_MAX_FREQUENCIES];
 802};
 803
 804/* ------------------------- WPA SUPPORT ------------------------- */
 805
 806/*
 807 *      Extended data structure for get/set encoding (this is used with
 808 *      SIOCSIWENCODEEXT/SIOCGIWENCODEEXT. struct iw_point and IW_ENCODE_*
 809 *      flags are used in the same way as with SIOCSIWENCODE/SIOCGIWENCODE and
 810 *      only the data contents changes (key data -> this structure, including
 811 *      key data).
 812 *
 813 *      If the new key is the first group key, it will be set as the default
 814 *      TX key. Otherwise, default TX key index is only changed if
 815 *      IW_ENCODE_EXT_SET_TX_KEY flag is set.
 816 *
 817 *      Key will be changed with SIOCSIWENCODEEXT in all cases except for
 818 *      special "change TX key index" operation which is indicated by setting
 819 *      key_len = 0 and ext_flags |= IW_ENCODE_EXT_SET_TX_KEY.
 820 *
 821 *      tx_seq/rx_seq are only used when respective
 822 *      IW_ENCODE_EXT_{TX,RX}_SEQ_VALID flag is set in ext_flags. Normal
 823 *      TKIP/CCMP operation is to set RX seq with SIOCSIWENCODEEXT and start
 824 *      TX seq from zero whenever key is changed. SIOCGIWENCODEEXT is normally
 825 *      used only by an Authenticator (AP or an IBSS station) to get the
 826 *      current TX sequence number. Using TX_SEQ_VALID for SIOCSIWENCODEEXT and
 827 *      RX_SEQ_VALID for SIOCGIWENCODEEXT are optional, but can be useful for
 828 *      debugging/testing.
 829 */
 830struct  iw_encode_ext
 831{
 832        __u32           ext_flags; /* IW_ENCODE_EXT_* */
 833        __u8            tx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
 834        __u8            rx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
 835        struct sockaddr addr; /* ff:ff:ff:ff:ff:ff for broadcast/multicast
 836                               * (group) keys or unicast address for
 837                               * individual keys */
 838        __u16           alg; /* IW_ENCODE_ALG_* */
 839        __u16           key_len;
 840        __u8            key[0];
 841};
 842
 843/* SIOCSIWMLME data */
 844struct  iw_mlme
 845{
 846        __u16           cmd; /* IW_MLME_* */
 847        __u16           reason_code;
 848        struct sockaddr addr;
 849};
 850
 851/* SIOCSIWPMKSA data */
 852#define IW_PMKSA_ADD            1
 853#define IW_PMKSA_REMOVE         2
 854#define IW_PMKSA_FLUSH          3
 855
 856#define IW_PMKID_LEN    16
 857
 858struct  iw_pmksa
 859{
 860        __u32           cmd; /* IW_PMKSA_* */
 861        struct sockaddr bssid;
 862        __u8            pmkid[IW_PMKID_LEN];
 863};
 864
 865/* IWEVMICHAELMICFAILURE data */
 866struct  iw_michaelmicfailure
 867{
 868        __u32           flags;
 869        struct sockaddr src_addr;
 870        __u8            tsc[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
 871};
 872
 873/* IWEVPMKIDCAND data */
 874#define IW_PMKID_CAND_PREAUTH   0x00000001 /* RNS pre-authentication enabled */
 875struct  iw_pmkid_cand
 876{
 877        __u32           flags; /* IW_PMKID_CAND_* */
 878        __u32           index; /* the smaller the index, the higher the
 879                                * priority */
 880        struct sockaddr bssid;
 881};
 882
 883/* ------------------------ WIRELESS STATS ------------------------ */
 884/*
 885 * Wireless statistics (used for /proc/net/wireless)
 886 */
 887struct  iw_statistics
 888{
 889        __u16           status;         /* Status
 890                                         * - device dependent for now */
 891
 892        struct iw_quality       qual;           /* Quality of the link
 893                                                 * (instant/mean/max) */
 894        struct iw_discarded     discard;        /* Packet discarded counts */
 895        struct iw_missed        miss;           /* Packet missed counts */
 896};
 897
 898/* ------------------------ IOCTL REQUEST ------------------------ */
 899/*
 900 * This structure defines the payload of an ioctl, and is used 
 901 * below.
 902 *
 903 * Note that this structure should fit on the memory footprint
 904 * of iwreq (which is the same as ifreq), which mean a max size of
 905 * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
 906 * You should check this when increasing the structures defined
 907 * above in this file...
 908 */
 909union   iwreq_data
 910{
 911        /* Config - generic */
 912        char            name[IFNAMSIZ];
 913        /* Name : used to verify the presence of  wireless extensions.
 914         * Name of the protocol/provider... */
 915
 916        struct iw_point essid;          /* Extended network name */
 917        struct iw_param nwid;           /* network id (or domain - the cell) */
 918        struct iw_freq  freq;           /* frequency or channel :
 919                                         * 0-1000 = channel
 920                                         * > 1000 = frequency in Hz */
 921
 922        struct iw_param sens;           /* signal level threshold */
 923        struct iw_param bitrate;        /* default bit rate */
 924        struct iw_param txpower;        /* default transmit power */
 925        struct iw_param rts;            /* RTS threshold threshold */
 926        struct iw_param frag;           /* Fragmentation threshold */
 927        __u32           mode;           /* Operation mode */
 928        struct iw_param retry;          /* Retry limits & lifetime */
 929
 930        struct iw_point encoding;       /* Encoding stuff : tokens */
 931        struct iw_param power;          /* PM duration/timeout */
 932        struct iw_quality qual;         /* Quality part of statistics */
 933
 934        struct sockaddr ap_addr;        /* Access point address */
 935        struct sockaddr addr;           /* Destination address (hw/mac) */
 936
 937        struct iw_param param;          /* Other small parameters */
 938        struct iw_point data;           /* Other large parameters */
 939};
 940
 941/*
 942 * The structure to exchange data for ioctl.
 943 * This structure is the same as 'struct ifreq', but (re)defined for
 944 * convenience...
 945 * Do I need to remind you about structure size (32 octets) ?
 946 */
 947struct  iwreq 
 948{
 949        union
 950        {
 951                char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "eth0" */
 952        } ifr_ifrn;
 953
 954        /* Data part (defined just above) */
 955        union   iwreq_data      u;
 956};
 957
 958/* -------------------------- IOCTL DATA -------------------------- */
 959/*
 960 *      For those ioctl which want to exchange mode data that what could
 961 *      fit in the above structure...
 962 */
 963
 964/*
 965 *      Range of parameters
 966 */
 967
 968struct  iw_range
 969{
 970        /* Informative stuff (to choose between different interface) */
 971        __u32           throughput;     /* To give an idea... */
 972        /* In theory this value should be the maximum benchmarked
 973         * TCP/IP throughput, because with most of these devices the
 974         * bit rate is meaningless (overhead an co) to estimate how
 975         * fast the connection will go and pick the fastest one.
 976         * I suggest people to play with Netperf or any benchmark...
 977         */
 978
 979        /* NWID (or domain id) */
 980        __u32           min_nwid;       /* Minimal NWID we are able to set */
 981        __u32           max_nwid;       /* Maximal NWID we are able to set */
 982
 983        /* Old Frequency (backward compat - moved lower ) */
 984        __u16           old_num_channels;
 985        __u8            old_num_frequency;
 986
 987        /* Scan capabilities */
 988        __u8            scan_capa;      /* IW_SCAN_CAPA_* bit field */
 989
 990        /* Wireless event capability bitmasks */
 991        __u32           event_capa[6];
 992
 993        /* signal level threshold range */
 994        __s32           sensitivity;
 995
 996        /* Quality of link & SNR stuff */
 997        /* Quality range (link, level, noise)
 998         * If the quality is absolute, it will be in the range [0 ; max_qual],
 999         * if the quality is dBm, it will be in the range [max_qual ; 0].
1000         * Don't forget that we use 8 bit arithmetics... */
1001        struct iw_quality       max_qual;       /* Quality of the link */
1002        /* This should contain the average/typical values of the quality
1003         * indicator. This should be the threshold between a "good" and
1004         * a "bad" link (example : monitor going from green to orange).
1005         * Currently, user space apps like quality monitors don't have any
1006         * way to calibrate the measurement. With this, they can split
1007         * the range between 0 and max_qual in different quality level
1008         * (using a geometric subdivision centered on the average).
1009         * I expect that people doing the user space apps will feedback
1010         * us on which value we need to put in each driver... */
1011        struct iw_quality       avg_qual;       /* Quality of the link */
1012
1013        /* Rates */
1014        __u8            num_bitrates;   /* Number of entries in the list */
1015        __s32           bitrate[IW_MAX_BITRATES];       /* list, in bps */
1016
1017        /* RTS threshold */
1018        __s32           min_rts;        /* Minimal RTS threshold */
1019        __s32           max_rts;        /* Maximal RTS threshold */
1020
1021        /* Frag threshold */
1022        __s32           min_frag;       /* Minimal frag threshold */
1023        __s32           max_frag;       /* Maximal frag threshold */
1024
1025        /* Power Management duration & timeout */
1026        __s32           min_pmp;        /* Minimal PM period */
1027        __s32           max_pmp;        /* Maximal PM period */
1028        __s32           min_pmt;        /* Minimal PM timeout */
1029        __s32           max_pmt;        /* Maximal PM timeout */
1030        __u16           pmp_flags;      /* How to decode max/min PM period */
1031        __u16           pmt_flags;      /* How to decode max/min PM timeout */
1032        __u16           pm_capa;        /* What PM options are supported */
1033
1034        /* Encoder stuff */
1035        __u16   encoding_size[IW_MAX_ENCODING_SIZES];   /* Different token sizes */
1036        __u8    num_encoding_sizes;     /* Number of entry in the list */
1037        __u8    max_encoding_tokens;    /* Max number of tokens */
1038        /* For drivers that need a "login/passwd" form */
1039        __u8    encoding_login_index;   /* token index for login token */
1040
1041        /* Transmit power */
1042        __u16           txpower_capa;   /* What options are supported */
1043        __u8            num_txpower;    /* Number of entries in the list */
1044        __s32           txpower[IW_MAX_TXPOWER];        /* list, in bps */
1045
1046        /* Wireless Extension version info */
1047        __u8            we_version_compiled;    /* Must be WIRELESS_EXT */
1048        __u8            we_version_source;      /* Last update of source */
1049
1050        /* Retry limits and lifetime */
1051        __u16           retry_capa;     /* What retry options are supported */
1052        __u16           retry_flags;    /* How to decode max/min retry limit */
1053        __u16           r_time_flags;   /* How to decode max/min retry life */
1054        __s32           min_retry;      /* Minimal number of retries */
1055        __s32           max_retry;      /* Maximal number of retries */
1056        __s32           min_r_time;     /* Minimal retry lifetime */
1057        __s32           max_r_time;     /* Maximal retry lifetime */
1058
1059        /* Frequency */
1060        __u16           num_channels;   /* Number of channels [0; num - 1] */
1061        __u8            num_frequency;  /* Number of entry in the list */
1062        struct iw_freq  freq[IW_MAX_FREQUENCIES];       /* list */
1063        /* Note : this frequency list doesn't need to fit channel numbers,
1064         * because each entry contain its channel index */
1065
1066        __u32           enc_capa;       /* IW_ENC_CAPA_* bit field */
1067};
1068
1069/*
1070 * Private ioctl interface information
1071 */
1072 
1073struct  iw_priv_args
1074{
1075        __u32           cmd;            /* Number of the ioctl to issue */
1076        __u16           set_args;       /* Type and number of args */
1077        __u16           get_args;       /* Type and number of args */
1078        char            name[IFNAMSIZ]; /* Name of the extension */
1079};
1080
1081/* ----------------------- WIRELESS EVENTS ----------------------- */
1082/*
1083 * Wireless events are carried through the rtnetlink socket to user
1084 * space. They are encapsulated in the IFLA_WIRELESS field of
1085 * a RTM_NEWLINK message.
1086 */
1087
1088/*
1089 * A Wireless Event. Contains basically the same data as the ioctl...
1090 */
1091struct iw_event
1092{
1093        __u16           len;                    /* Real length of this stuff */
1094        __u16           cmd;                    /* Wireless IOCTL */
1095        union iwreq_data        u;              /* IOCTL fixed payload */
1096};
1097
1098/* Size of the Event prefix (including padding and alignement junk) */
1099#define IW_EV_LCP_LEN   (sizeof(struct iw_event) - sizeof(union iwreq_data))
1100/* Size of the various events */
1101#define IW_EV_CHAR_LEN  (IW_EV_LCP_LEN + IFNAMSIZ)
1102#define IW_EV_UINT_LEN  (IW_EV_LCP_LEN + sizeof(__u32))
1103#define IW_EV_FREQ_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_freq))
1104#define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param))
1105#define IW_EV_ADDR_LEN  (IW_EV_LCP_LEN + sizeof(struct sockaddr))
1106#define IW_EV_QUAL_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_quality))
1107
1108/* iw_point events are special. First, the payload (extra data) come at
1109 * the end of the event, so they are bigger than IW_EV_POINT_LEN. Second,
1110 * we omit the pointer, so start at an offset. */
1111#define IW_EV_POINT_OFF (((char *) &(((struct iw_point *) NULL)->length)) - \
1112                          (char *) NULL)
1113#define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point) - \
1114                         IW_EV_POINT_OFF)
1115
1116#ifdef __KERNEL__
1117#ifdef CONFIG_COMPAT
1118struct __compat_iw_event {
1119        __u16           len;                    /* Real length of this stuff */
1120        __u16           cmd;                    /* Wireless IOCTL */
1121        compat_caddr_t  pointer;
1122};
1123#define IW_EV_COMPAT_LCP_LEN offsetof(struct __compat_iw_event, pointer)
1124#define IW_EV_COMPAT_POINT_OFF offsetof(struct compat_iw_point, length)
1125#define IW_EV_COMPAT_POINT_LEN  \
1126        (IW_EV_COMPAT_LCP_LEN + sizeof(struct compat_iw_point) - \
1127         IW_EV_COMPAT_POINT_OFF)
1128#endif
1129#endif
1130
1131/* Size of the Event prefix when packed in stream */
1132#define IW_EV_LCP_PK_LEN        (4)
1133/* Size of the various events when packed in stream */
1134#define IW_EV_CHAR_PK_LEN       (IW_EV_LCP_PK_LEN + IFNAMSIZ)
1135#define IW_EV_UINT_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(__u32))
1136#define IW_EV_FREQ_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_freq))
1137#define IW_EV_PARAM_PK_LEN      (IW_EV_LCP_PK_LEN + sizeof(struct iw_param))
1138#define IW_EV_ADDR_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct sockaddr))
1139#define IW_EV_QUAL_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_quality))
1140#define IW_EV_POINT_PK_LEN      (IW_EV_LCP_LEN + 4)
1141
1142#endif  /* _LINUX_WIRELESS_H */
1143
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