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/*

 * This file define a set of standard wireless extensions

 *

 * Version :    16      2.4.03

 *

 * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>

 * Copyright (c) 1997-2002 Jean Tourrilhes, All Rights Reserved.

 */

#ifndef _LINUX_WIRELESS_H

#define _LINUX_WIRELESS_H

/************************** DOCUMENTATION **************************/

/*

 * Initial APIs (1996 -> onward) :

 * -----------------------------

 * Basically, the wireless extensions are for now a set of standard ioctl

 * call + /proc/net/wireless

 *

 * The entry /proc/net/wireless give statistics and information on the

 * driver.

 * This is better than having each driver having its entry because

 * its centralised and we may remove the driver module safely.

 *

 * Ioctl are used to configure the driver and issue commands.  This is

 * better than command line options of insmod because we may want to

 * change dynamically (while the driver is running) some parameters.

 *

 * The ioctl mechanimsm are copied from standard devices ioctl.

 * We have the list of command plus a structure descibing the

 * data exchanged...

 * Note that to add these ioctl, I was obliged to modify :

 *      # net/core/dev.c (two place + add include)

 *      # net/ipv4/af_inet.c (one place + add include)

 *

 * /proc/net/wireless is a copy of /proc/net/dev.

 * We have a structure for data passed from the driver to /proc/net/wireless

 * Too add this, I've modified :

 *      # net/core/dev.c (two other places)

 *      # include/linux/netdevice.h (one place)

 *      # include/linux/proc_fs.h (one place)

 *

 * New driver API (2002 -> onward) :

 * -------------------------------

 * This file is only concerned with the user space API and common definitions.

 * The new driver API is defined and documented in :

 *      # include/net/iw_handler.h

 *

 * Note as well that /proc/net/wireless implementation has now moved in :

 *      # include/linux/wireless.c

 *

 * Wireless Events (2002 -> onward) :

 * --------------------------------

 * Events are defined at the end of this file, and implemented in :

 *      # include/linux/wireless.c

 *

 * Other comments :

 * --------------

 * Do not add here things that are redundant with other mechanisms

 * (drivers init, ifconfig, /proc/net/dev, ...) and with are not

 * wireless specific.

 *

 * These wireless extensions are not magic : each driver has to provide

 * support for them...

 *

 * IMPORTANT NOTE : As everything in the kernel, this is very much a

 * work in progress. Contact me if you have ideas of improvements...

 */

/***************************** INCLUDES *****************************/

/* To minimise problems in user space, I might remove those headers

 * at some point. Jean II */

#include <linux/types.h>                /* for "caddr_t" et al          */

#include <linux/socket.h>               /* for "struct sockaddr" et al  */

#include <linux/if.h>                   /* for IFNAMSIZ and co... */

/***************************** VERSION *****************************/

/*

 * This constant is used to know the availability of the wireless

 * extensions and to know which version of wireless extensions it is

 * (there is some stuff that will be added in the future...)

 * I just plan to increment with each new version.

 */

#define WIRELESS_EXT    16

/*

 * Changes :

 *

 * V2 to V3

 * --------

 *      Alan Cox start some incompatibles changes. I've integrated a bit more.

 *      - Encryption renamed to Encode to avoid US regulation problems

 *      - Frequency changed from float to struct to avoid problems on old 386

 *

 * V3 to V4

 * --------

 *      - Add sensitivity

 *

 * V4 to V5

 * --------

 *      - Missing encoding definitions in range

 *      - Access points stuff

 *

 * V5 to V6

 * --------

 *      - 802.11 support (ESSID ioctls)

 *

 * V6 to V7

 * --------

 *      - define IW_ESSID_MAX_SIZE and IW_MAX_AP

 *

 * V7 to V8

 * --------

 *      - Changed my e-mail address

 *      - More 802.11 support (nickname, rate, rts, frag)

 *      - List index in frequencies

 *

 * V8 to V9

 * --------

 *      - Support for 'mode of operation' (ad-hoc, managed...)

 *      - Support for unicast and multicast power saving

 *      - Change encoding to support larger tokens (>64 bits)

 *      - Updated iw_params (disable, flags) and use it for NWID

 *      - Extracted iw_point from iwreq for clarity

 *

 * V9 to V10

 * ---------

 *      - Add PM capability to range structure

 *      - Add PM modifier : MAX/MIN/RELATIVE

 *      - Add encoding option : IW_ENCODE_NOKEY

 *      - Add TxPower ioctls (work like TxRate)

 *

 * V10 to V11

 * ----------

 *      - Add WE version in range (help backward/forward compatibility)

 *      - Add retry ioctls (work like PM)

 *

 * V11 to V12

 * ----------

 *      - Add SIOCSIWSTATS to get /proc/net/wireless programatically

 *      - Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space

 *      - Add new statistics (frag, retry, beacon)

 *      - Add average quality (for user space calibration)

 *

 * V12 to V13

 * ----------

 *      - Document creation of new driver API.

 *      - Extract union iwreq_data from struct iwreq (for new driver API).

 *      - Rename SIOCSIWNAME as SIOCSIWCOMMIT

 *

 * V13 to V14

 * ----------

 *      - Wireless Events support : define struct iw_event

 *      - Define additional specific event numbers

 *      - Add "addr" and "param" fields in union iwreq_data

 *      - AP scanning stuff (SIOCSIWSCAN and friends)

 *

 * V14 to V15

 * ----------

 *      - Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg

 *      - Make struct iw_freq signed (both m & e), add explicit padding

 *      - Add IWEVCUSTOM for driver specific event/scanning token

 *      - Add IW_MAX_GET_SPY for driver returning a lot of addresses

 *      - Add IW_TXPOW_RANGE for range of Tx Powers

 *      - Add IWEVREGISTERED & IWEVEXPIRED events for Access Points

 *      - Add IW_MODE_MONITOR for passive monitor

 *

 * V15 to V16

 * ----------

 *      - Increase the number of bitrates in iw_range to 32 (for 802.11g)

 *      - Increase the number of frequencies in iw_range to 32 (for 802.11b+a)

 *      - Reshuffle struct iw_range for increases, add filler

 *      - Increase IW_MAX_AP to 64 for driver returning a lot of addresses

 *      - Remove IW_MAX_GET_SPY because conflict with enhanced spy support

 *      - Add SIOCSIWTHRSPY/SIOCGIWTHRSPY and "struct iw_thrspy"

 *      - Add IW_ENCODE_TEMP and iw_range->encoding_login_index

 */

/**************************** CONSTANTS ****************************/

/* -------------------------- IOCTL LIST -------------------------- */

/* Wireless Identification */

#define SIOCSIWCOMMIT   0x8B00          /* Commit pending changes to driver */

#define SIOCGIWNAME     0x8B01          /* get name == wireless protocol */

/* SIOCGIWNAME is used to verify the presence of Wireless Extensions.

 * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"...

 * Don't put the name of your driver there, it's useless. */

/* Basic operations */

#define SIOCSIWNWID     0x8B02          /* set network id (pre-802.11) */

#define SIOCGIWNWID     0x8B03          /* get network id (the cell) */

#define SIOCSIWFREQ     0x8B04          /* set channel/frequency (Hz) */

#define SIOCGIWFREQ     0x8B05          /* get channel/frequency (Hz) */

#define SIOCSIWMODE     0x8B06          /* set operation mode */

#define SIOCGIWMODE     0x8B07          /* get operation mode */

#define SIOCSIWSENS     0x8B08          /* set sensitivity (dBm) */

#define SIOCGIWSENS     0x8B09          /* get sensitivity (dBm) */

/* Informative stuff */

#define SIOCSIWRANGE    0x8B0A          /* Unused */

#define SIOCGIWRANGE    0x8B0B          /* Get range of parameters */

#define SIOCSIWPRIV     0x8B0C          /* Unused */

#define SIOCGIWPRIV     0x8B0D          /* get private ioctl interface info */

#define SIOCSIWSTATS    0x8B0E          /* Unused */

#define SIOCGIWSTATS    0x8B0F          /* Get /proc/net/wireless stats */

/* SIOCGIWSTATS is strictly used between user space and the kernel, and

 * is never passed to the driver (i.e. the driver will never see it). */

/* Spy support (statistics per MAC address - used for Mobile IP support) */

#define SIOCSIWSPY      0x8B10          /* set spy addresses */

#define SIOCGIWSPY      0x8B11          /* get spy info (quality of link) */

#define SIOCSIWTHRSPY   0x8B12          /* set spy threshold (spy event) */

#define SIOCGIWTHRSPY   0x8B13          /* get spy threshold */

/* Access Point manipulation */

#define SIOCSIWAP       0x8B14          /* set access point MAC addresses */

#define SIOCGIWAP       0x8B15          /* get access point MAC addresses */

#define SIOCGIWAPLIST   0x8B17          /* Deprecated in favor of scanning */

#define SIOCSIWSCAN     0x8B18          /* trigger scanning (list cells) */

#define SIOCGIWSCAN     0x8B19          /* get scanning results */

/* 802.11 specific support */

#define SIOCSIWESSID    0x8B1A          /* set ESSID (network name) */

#define SIOCGIWESSID    0x8B1B          /* get ESSID */

#define SIOCSIWNICKN    0x8B1C          /* set node name/nickname */

#define SIOCGIWNICKN    0x8B1D          /* get node name/nickname */

/* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit

 * within the 'iwreq' structure, so we need to use the 'data' member to

 * point to a string in user space, like it is done for RANGE... */

/* Other parameters useful in 802.11 and some other devices */

#define SIOCSIWRATE     0x8B20          /* set default bit rate (bps) */

#define SIOCGIWRATE     0x8B21          /* get default bit rate (bps) */

#define SIOCSIWRTS      0x8B22          /* set RTS/CTS threshold (bytes) */

#define SIOCGIWRTS      0x8B23          /* get RTS/CTS threshold (bytes) */

#define SIOCSIWFRAG     0x8B24          /* set fragmentation thr (bytes) */

#define SIOCGIWFRAG     0x8B25          /* get fragmentation thr (bytes) */

#define SIOCSIWTXPOW    0x8B26          /* set transmit power (dBm) */

#define SIOCGIWTXPOW    0x8B27          /* get transmit power (dBm) */

#define SIOCSIWRETRY    0x8B28          /* set retry limits and lifetime */

#define SIOCGIWRETRY    0x8B29          /* get retry limits and lifetime */

/* Encoding stuff (scrambling, hardware security, WEP...) */

#define SIOCSIWENCODE   0x8B2A          /* set encoding token & mode */

#define SIOCGIWENCODE   0x8B2B          /* get encoding token & mode */

/* Power saving stuff (power management, unicast and multicast) */

#define SIOCSIWPOWER    0x8B2C          /* set Power Management settings */

#define SIOCGIWPOWER    0x8B2D          /* get Power Management settings */

/* -------------------- DEV PRIVATE IOCTL LIST -------------------- */

/* These 16 ioctl are wireless device private.

 * Each driver is free to use them for whatever purpose it chooses,

 * however the driver *must* export the description of those ioctls

 * with SIOCGIWPRIV and *must* use arguments as defined below.

 * If you don't follow those rules, DaveM is going to hate you (reason :

 * it make mixed 32/64bit operation impossible).

 */

#define SIOCIWFIRSTPRIV 0x8BE0

#define SIOCIWLASTPRIV  0x8BFF

/* Previously, we were using SIOCDEVPRIVATE, but we now have our

 * separate range because of collisions with other tools such as

 * 'mii-tool'.

 * We now have 32 commands, so a bit more space ;-).

 * Also, all 'odd' commands are only usable by root and don't return the

 * content of ifr/iwr to user (but you are not obliged to use the set/get

 * convention, just use every other two command).

 * And I repeat : you are not obliged to use them with iwspy, but you

 * must be compliant with it.

 */

/* ------------------------- IOCTL STUFF ------------------------- */

/* The first and the last (range) */

#define SIOCIWFIRST     0x8B00

#define SIOCIWLAST      SIOCIWLASTPRIV          /* 0x8BFF */

/* Even : get (world access), odd : set (root access) */

#define IW_IS_SET(cmd)  (!((cmd) & 0x1))

#define IW_IS_GET(cmd)  ((cmd) & 0x1)

/* ----------------------- WIRELESS EVENTS ----------------------- */

/* Those are *NOT* ioctls, do not issue request on them !!! */

/* Most events use the same identifier as ioctl requests */

#define IWEVTXDROP      0x8C00          /* Packet dropped to excessive retry */

#define IWEVQUAL        0x8C01          /* Quality part of statistics (scan) */

#define IWEVCUSTOM      0x8C02          /* Driver specific ascii string */

#define IWEVREGISTERED  0x8C03          /* Discovered a new node (AP mode) */

#define IWEVEXPIRED     0x8C04          /* Expired a node (AP mode) */

#define IWEVFIRST       0x8C00

/* ------------------------- PRIVATE INFO ------------------------- */

/*

 * The following is used with SIOCGIWPRIV. It allow a driver to define

 * the interface (name, type of data) for its private ioctl.

 * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV

 */

#define IW_PRIV_TYPE_MASK       0x7000  /* Type of arguments */

#define IW_PRIV_TYPE_NONE       0x0000

#define IW_PRIV_TYPE_BYTE       0x1000  /* Char as number */

#define IW_PRIV_TYPE_CHAR       0x2000  /* Char as character */

#define IW_PRIV_TYPE_INT        0x4000  /* 32 bits int */

#define IW_PRIV_TYPE_FLOAT      0x5000  /* struct iw_freq */

#define IW_PRIV_TYPE_ADDR       0x6000  /* struct sockaddr */

#define IW_PRIV_SIZE_FIXED      0x0800  /* Variable or fixed number of args */

#define IW_PRIV_SIZE_MASK       0x07FF  /* Max number of those args */

/*

 * Note : if the number of args is fixed and the size < 16 octets,

 * instead of passing a pointer we will put args in the iwreq struct...

 */

/* ----------------------- OTHER CONSTANTS ----------------------- */

/* Maximum frequencies in the range struct */

#define IW_MAX_FREQUENCIES      32

/* Note : if you have something like 80 frequencies,

 * don't increase this constant and don't fill the frequency list.

 * The user will be able to set by channel anyway... */

/* Maximum bit rates in the range struct */

#define IW_MAX_BITRATES         32

/* Maximum tx powers in the range struct */

#define IW_MAX_TXPOWER          8

/* Note : if you more than 8 TXPowers, just set the max and min or

 * a few of them in the struct iw_range. */

/* Maximum of address that you may set with SPY */

#define IW_MAX_SPY              8

/* Maximum of address that you may get in the

   list of access points in range */

#define IW_MAX_AP               64

/* Maximum size of the ESSID and NICKN strings */

#define IW_ESSID_MAX_SIZE       32

/* Modes of operation */

#define IW_MODE_AUTO    0       /* Let the driver decides */

#define IW_MODE_ADHOC   1       /* Single cell network */

#define IW_MODE_INFRA   2       /* Multi cell network, roaming, ... */

#define IW_MODE_MASTER  3       /* Synchronisation master or Access Point */

#define IW_MODE_REPEAT  4       /* Wireless Repeater (forwarder) */

#define IW_MODE_SECOND  5       /* Secondary master/repeater (backup) */

#define IW_MODE_MONITOR 6       /* Passive monitor (listen only) */

/* Maximum number of size of encoding token available

 * they are listed in the range structure */

#define IW_MAX_ENCODING_SIZES   8

/* Maximum size of the encoding token in bytes */

#define IW_ENCODING_TOKEN_MAX   32      /* 256 bits (for now) */

/* Flags for encoding (along with the token) */

#define IW_ENCODE_INDEX         0x00FF  /* Token index (if needed) */

#define IW_ENCODE_FLAGS         0xFF00  /* Flags defined below */

#define IW_ENCODE_MODE          0xF000  /* Modes defined below */

#define IW_ENCODE_DISABLED      0x8000  /* Encoding disabled */

#define IW_ENCODE_ENABLED       0x0000  /* Encoding enabled */

#define IW_ENCODE_RESTRICTED    0x4000  /* Refuse non-encoded packets */

#define IW_ENCODE_OPEN          0x2000  /* Accept non-encoded packets */

#define IW_ENCODE_NOKEY         0x0800  /* Key is write only, so not present */

#define IW_ENCODE_TEMP          0x0400  /* Temporary key */

/* Power management flags available (along with the value, if any) */

#define IW_POWER_ON             0x0000  /* No details... */

#define IW_POWER_TYPE           0xF000  /* Type of parameter */

#define IW_POWER_PERIOD         0x1000  /* Value is a period/duration of  */

#define IW_POWER_TIMEOUT        0x2000  /* Value is a timeout (to go asleep) */

#define IW_POWER_MODE           0x0F00  /* Power Management mode */

#define IW_POWER_UNICAST_R      0x0100  /* Receive only unicast messages */

#define IW_POWER_MULTICAST_R    0x0200  /* Receive only multicast messages */

#define IW_POWER_ALL_R          0x0300  /* Receive all messages though PM */

#define IW_POWER_FORCE_S        0x0400  /* Force PM procedure for sending unicast */

#define IW_POWER_REPEATER       0x0800  /* Repeat broadcast messages in PM period */

#define IW_POWER_MODIFIER       0x000F  /* Modify a parameter */

#define IW_POWER_MIN            0x0001  /* Value is a minimum  */

#define IW_POWER_MAX            0x0002  /* Value is a maximum */

#define IW_POWER_RELATIVE       0x0004  /* Value is not in seconds/ms/us */

/* Transmit Power flags available */

#define IW_TXPOW_TYPE           0x00FF  /* Type of value */

#define IW_TXPOW_DBM            0x0000  /* Value is in dBm */

#define IW_TXPOW_MWATT          0x0001  /* Value is in mW */

#define IW_TXPOW_RANGE          0x1000  /* Range of value between min/max */

/* Retry limits and lifetime flags available */

#define IW_RETRY_ON             0x0000  /* No details... */

#define IW_RETRY_TYPE           0xF000  /* Type of parameter */

#define IW_RETRY_LIMIT          0x1000  /* Maximum number of retries*/

#define IW_RETRY_LIFETIME       0x2000  /* Maximum duration of retries in us */

#define IW_RETRY_MODIFIER       0x000F  /* Modify a parameter */

#define IW_RETRY_MIN            0x0001  /* Value is a minimum  */

#define IW_RETRY_MAX            0x0002  /* Value is a maximum */

#define IW_RETRY_RELATIVE       0x0004  /* Value is not in seconds/ms/us */

/* Scanning request flags */

#define IW_SCAN_DEFAULT         0x0000  /* Default scan of the driver */

#define IW_SCAN_ALL_ESSID       0x0001  /* Scan all ESSIDs */

#define IW_SCAN_THIS_ESSID      0x0002  /* Scan only this ESSID */

#define IW_SCAN_ALL_FREQ        0x0004  /* Scan all Frequencies */

#define IW_SCAN_THIS_FREQ       0x0008  /* Scan only this Frequency */

#define IW_SCAN_ALL_MODE        0x0010  /* Scan all Modes */

#define IW_SCAN_THIS_MODE       0x0020  /* Scan only this Mode */

#define IW_SCAN_ALL_RATE        0x0040  /* Scan all Bit-Rates */

#define IW_SCAN_THIS_RATE       0x0080  /* Scan only this Bit-Rate */

/* Maximum size of returned data */

#define IW_SCAN_MAX_DATA        4096    /* In bytes */

/* Max number of char in custom event - use multiple of them if needed */

#define IW_CUSTOM_MAX           256     /* In bytes */

/****************************** TYPES ******************************/

/* --------------------------- SUBTYPES --------------------------- */

/*

 *      Generic format for most parameters that fit in an int

 */

struct  iw_param

{

  __s32         value;          /* The value of the parameter itself */

  __u8          fixed;          /* Hardware should not use auto select */

  __u8          disabled;       /* Disable the feature */

  __u16         flags;          /* Various specifc flags (if any) */

};

/*

 *      For all data larger than 16 octets, we need to use a

 *      pointer to memory allocated in user space.

 */

struct  iw_point

{

  caddr_t       pointer;        /* Pointer to the data  (in user space) */

  __u16         length;         /* number of fields or size in bytes */

  __u16         flags;          /* Optional params */

};

/*

 *      A frequency

 *      For numbers lower than 10^9, we encode the number in 'm' and

 *      set 'e' to 0

 *      For number greater than 10^9, we divide it by the lowest power

 *      of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...

 *      The power of 10 is in 'e', the result of the division is in 'm'.

 */

struct  iw_freq

{

        __s32           m;              /* Mantissa */

        __s16           e;              /* Exponent */

        __u8            i;              /* List index (when in range struct) */

        __u8            pad;            /* Unused - just for alignement */

};

/*

 *      Quality of the link

 */

struct  iw_quality

{

        __u8            qual;           /* link quality (%retries, SNR,

                                           %missed beacons or better...) */

        __u8            level;          /* signal level (dBm) */

        __u8            noise;          /* noise level (dBm) */

        __u8            updated;        /* Flags to know if updated */

};

/*

 *      Packet discarded in the wireless adapter due to

 *      "wireless" specific problems...

 *      Note : the list of counter and statistics in net_device_stats

 *      is already pretty exhaustive, and you should use that first.

 *      This is only additional stats...

 */

struct  iw_discarded

{

        __u32           nwid;           /* Rx : Wrong nwid/essid */

        __u32           code;           /* Rx : Unable to code/decode (WEP) */

        __u32           fragment;       /* Rx : Can't perform MAC reassembly */

        __u32           retries;        /* Tx : Max MAC retries num reached */

        __u32           misc;           /* Others cases */

};

/*

 *      Packet/Time period missed in the wireless adapter due to

 *      "wireless" specific problems...

 */

struct  iw_missed

{

        __u32           beacon;         /* Missed beacons/superframe */

};

/*

 *      Quality range (for spy threshold)

 */

struct  iw_thrspy

{

        struct sockaddr         addr;           /* Source address (hw/mac) */

        struct iw_quality       qual;           /* Quality of the link */

        struct iw_quality       low;            /* Low threshold */

        struct iw_quality       high;           /* High threshold */

};

/* ------------------------ WIRELESS STATS ------------------------ */

/*

 * Wireless statistics (used for /proc/net/wireless)

 */

struct  iw_statistics

{

        __u16           status;         /* Status

                                         * - device dependent for now */

        struct iw_quality       qual;           /* Quality of the link

                                                 * (instant/mean/max) */

        struct iw_discarded     discard;        /* Packet discarded counts */

        struct iw_missed        miss;           /* Packet missed counts */

};

/* ------------------------ IOCTL REQUEST ------------------------ */

/*

 * This structure defines the payload of an ioctl, and is used

 * below.

 *

 * Note that this structure should fit on the memory footprint

 * of iwreq (which is the same as ifreq), which mean a max size of

 * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...

 * You should check this when increasing the structures defined

 * above in this file...

 */

union   iwreq_data

{

        /* Config - generic */

        char            name[IFNAMSIZ];

        /* Name : used to verify the presence of  wireless extensions.

         * Name of the protocol/provider... */

        struct iw_point essid;          /* Extended network name */

        struct iw_param nwid;           /* network id (or domain - the cell) */

        struct iw_freq  freq;           /* frequency or channel :

                                         * 0-1000 = channel

                                         * > 1000 = frequency in Hz */

        struct iw_param sens;           /* signal level threshold */

        struct iw_param bitrate;        /* default bit rate */

        struct iw_param txpower;        /* default transmit power */

        struct iw_param rts;            /* RTS threshold threshold */

        struct iw_param frag;           /* Fragmentation threshold */

        __u32           mode;           /* Operation mode */

        struct iw_param retry;          /* Retry limits & lifetime */

        struct iw_point encoding;       /* Encoding stuff : tokens */

        struct iw_param power;          /* PM duration/timeout */

        struct iw_quality qual;         /* Quality part of statistics */

        struct sockaddr ap_addr;        /* Access point address */

        struct sockaddr addr;           /* Destination address (hw/mac) */

        struct iw_param param;          /* Other small parameters */

        struct iw_point data;           /* Other large parameters */

};

/*

 * The structure to exchange data for ioctl.

 * This structure is the same as 'struct ifreq', but (re)defined for

 * convenience...

 * Do I need to remind you about structure size (32 octets) ?

 */

struct  iwreq

{

        union

        {

                char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "eth0" */

        } ifr_ifrn;

        /* Data part (defined just above) */

        union   iwreq_data      u;

};

/* -------------------------- IOCTL DATA -------------------------- */

/*

 *      For those ioctl which want to exchange mode data that what could

 *      fit in the above structure...

 */

/*

 *      Range of parameters

 */

struct  iw_range

{

        /* Informative stuff (to choose between different interface) */

        __u32           throughput;     /* To give an idea... */

        /* In theory this value should be the maximum benchmarked

         * TCP/IP throughput, because with most of these devices the

         * bit rate is meaningless (overhead an co) to estimate how

         * fast the connection will go and pick the fastest one.

         * I suggest people to play with Netperf or any benchmark...

         */

        /* NWID (or domain id) */

        __u32           min_nwid;       /* Minimal NWID we are able to set */

        __u32           max_nwid;       /* Maximal NWID we are able to set */

        /* Old Frequency (backward compat - moved lower ) */

        __u16           old_num_channels;

        __u8            old_num_frequency;

        /* Filler to keep "version" at the same offset */

        __s32           old_freq[6];

        /* signal level threshold range */

        __s32   sensitivity;

        /* Quality of link & SNR stuff */

        /* Quality range (link, level, noise)

         * If the quality is absolute, it will be in the range [0 ; max_qual],

         * if the quality is dBm, it will be in the range [max_qual ; 0].

         * Don't forget that we use 8 bit arithmetics... */

        struct iw_quality       max_qual;       /* Quality of the link */

        /* This should contain the average/typical values of the quality

         * indicator. This should be the threshold between a "good" and

         * a "bad" link (example : monitor going from green to orange).

         * Currently, user space apps like quality monitors don't have any

         * way to calibrate the measurement. With this, they can split

         * the range between 0 and max_qual in different quality level

         * (using a geometric subdivision centered on the average).

         * I expect that people doing the user space apps will feedback

         * us on which value we need to put in each driver... */

        struct iw_quality       avg_qual;       /* Quality of the link */

        /* Rates */

        __u8            num_bitrates;   /* Number of entries in the list */

        __s32           bitrate[IW_MAX_BITRATES];       /* list, in bps */

        /* RTS threshold */

        __s32           min_rts;        /* Minimal RTS threshold */

        __s32           max_rts;        /* Maximal RTS threshold */

        /* Frag threshold */

        __s32           min_frag;       /* Minimal frag threshold */

        __s32           max_frag;       /* Maximal frag threshold */

        /* Power Management duration & timeout */

        __s32           min_pmp;        /* Minimal PM period */

        __s32           max_pmp;        /* Maximal PM period */

        __s32           min_pmt;        /* Minimal PM timeout */

        __s32           max_pmt;        /* Maximal PM timeout */

        __u16           pmp_flags;      /* How to decode max/min PM period */

        __u16           pmt_flags;      /* How to decode max/min PM timeout */

        __u16           pm_capa;        /* What PM options are supported */

        /* Encoder stuff */

        __u16   encoding_size[IW_MAX_ENCODING_SIZES];   /* Different token sizes */

        __u8    num_encoding_sizes;     /* Number of entry in the list */

        __u8    max_encoding_tokens;    /* Max number of tokens */

        /* For drivers that need a "login/passwd" form */

        __u8    encoding_login_index;   /* token index for login token */

        /* Transmit power */

        __u16           txpower_capa;   /* What options are supported */

        __u8            num_txpower;    /* Number of entries in the list */

        __s32           txpower[IW_MAX_TXPOWER];        /* list, in bps */

        /* Wireless Extension version info */

        __u8            we_version_compiled;    /* Must be WIRELESS_EXT */

        __u8            we_version_source;      /* Last update of source */

        /* Retry limits and lifetime */

        __u16           retry_capa;     /* What retry options are supported */

        __u16           retry_flags;    /* How to decode max/min retry limit */

        __u16           r_time_flags;   /* How to decode max/min retry life */

        __s32           min_retry;      /* Minimal number of retries */

        __s32           max_retry;      /* Maximal number of retries */

        __s32           min_r_time;     /* Minimal retry lifetime */

        __s32           max_r_time;     /* Maximal retry lifetime */

        /* Frequency */

        __u16           num_channels;   /* Number of channels [0; num - 1] */

        __u8            num_frequency;  /* Number of entry in the list */

        struct iw_freq  freq[IW_MAX_FREQUENCIES];       /* list */

        /* Note : this frequency list doesn't need to fit channel numbers,

         * because each entry contain its channel index */

};

/*

 * Private ioctl interface information

 */

struct  iw_priv_args

{

        __u32           cmd;            /* Number of the ioctl to issue */

        __u16           set_args;       /* Type and number of args */

        __u16           get_args;       /* Type and number of args */

        char            name[IFNAMSIZ]; /* Name of the extension */

};

/* ----------------------- WIRELESS EVENTS ----------------------- */

/*

 * Wireless events are carried through the rtnetlink socket to user

 * space. They are encapsulated in the IFLA_WIRELESS field of

 * a RTM_NEWLINK message.

 */

/*

 * A Wireless Event. Contains basically the same data as the ioctl...

 */

struct iw_event

{

        __u16           len;                    /* Real lenght of this stuff */

        __u16           cmd;                    /* Wireless IOCTL */

        union iwreq_data        u;              /* IOCTL fixed payload */

};

/* Size of the Event prefix (including padding and alignement junk) */

#define IW_EV_LCP_LEN   (sizeof(struct iw_event) - sizeof(union iwreq_data))

/* Size of the various events */

#define IW_EV_CHAR_LEN  (IW_EV_LCP_LEN + IFNAMSIZ)

#define IW_EV_UINT_LEN  (IW_EV_LCP_LEN + sizeof(__u32))

#define IW_EV_FREQ_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_freq))

#define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point))

#define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param))

#define IW_EV_ADDR_LEN  (IW_EV_LCP_LEN + sizeof(struct sockaddr))

#define IW_EV_QUAL_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_quality))

/* Note : in the case of iw_point, the extra data will come at the

 * end of the event */

#endif  /* _LINUX_WIRELESS_H */