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wireless.h

/*
 * This file define a set of standard wireless extensions
 *
 * Version :      22    16.3.07
 *
 * Authors :      Jean Tourrilhes - HPL - <jt@hpl.hp.com>
 * Copyright (c) 1997-2007 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 :
 *    # net/core/wireless.c
 *
 * Wireless Events (2002 -> onward) :
 * --------------------------------
 * Events are defined at the end of this file, and implemented in :
 *    # net/core/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 *****************************/

/* This header is used in user-space, therefore need to be sanitised
 * for that purpose. Those includes are usually not compatible with glibc.
 * To know which includes to use in user-space, check iwlib.h. */
#ifdef __KERNEL__
#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... */
#endif      /* __KERNEL__ */

/***************************** 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    22

/*
 * 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
 *
 * V16 to V17
 * ----------
 *    - Add flags to frequency -> auto/fixed
 *    - Document (struct iw_quality *)->updated, add new flags (INVALID)
 *    - Wireless Event capability in struct iw_range
 *    - Add support for relative TxPower (yick !)
 *
 * V17 to V18 (From Jouni Malinen <j@w1.fi>)
 * ----------
 *    - Add support for WPA/WPA2
 *    - Add extended encoding configuration (SIOCSIWENCODEEXT and
 *      SIOCGIWENCODEEXT)
 *    - Add SIOCSIWGENIE/SIOCGIWGENIE
 *    - Add SIOCSIWMLME
 *    - Add SIOCSIWPMKSA
 *    - Add struct iw_range bit field for supported encoding capabilities
 *    - Add optional scan request parameters for SIOCSIWSCAN
 *    - Add SIOCSIWAUTH/SIOCGIWAUTH for setting authentication and WPA
 *      related parameters (extensible up to 4096 parameter values)
 *    - Add wireless events: IWEVGENIE, IWEVMICHAELMICFAILURE,
 *      IWEVASSOCREQIE, IWEVASSOCRESPIE, IWEVPMKIDCAND
 *
 * V18 to V19
 * ----------
 *    - Remove (struct iw_point *)->pointer from events and streams
 *    - Remove header includes to help user space
 *    - Increase IW_ENCODING_TOKEN_MAX from 32 to 64
 *    - Add IW_QUAL_ALL_UPDATED and IW_QUAL_ALL_INVALID macros
 *    - Add explicit flag to tell stats are in dBm : IW_QUAL_DBM
 *    - Add IW_IOCTL_IDX() and IW_EVENT_IDX() macros
 *
 * V19 to V20
 * ----------
 *    - RtNetlink requests support (SET/GET)
 *
 * V20 to V21
 * ----------
 *    - Remove (struct net_device *)->get_wireless_stats()
 *    - Change length in ESSID and NICK to strlen() instead of strlen()+1
 *    - Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
 *    - Power/Retry relative values no longer * 100000
 *    - Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
 *
 * V21 to V22
 * ----------
 *    - Prevent leaking of kernel space in stream on 64 bits.
 */

/**************************** 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 */

/* WPA : Generic IEEE 802.11 informatiom element (e.g., for WPA/RSN/WMM).
 * This ioctl uses struct iw_point and data buffer that includes IE id and len
 * fields. More than one IE may be included in the request. Setting the generic
 * IE to empty buffer (len=0) removes the generic IE from the driver. Drivers
 * are allowed to generate their own WPA/RSN IEs, but in these cases, drivers
 * are required to report the used IE as a wireless event, e.g., when
 * associating with an AP. */
#define SIOCSIWGENIE    0x8B30            /* set generic IE */
#define SIOCGIWGENIE    0x8B31            /* get generic IE */

/* WPA : IEEE 802.11 MLME requests */
#define SIOCSIWMLME     0x8B16            /* request MLME operation; uses
                               * struct iw_mlme */
/* WPA : Authentication mode parameters */
#define SIOCSIWAUTH     0x8B32            /* set authentication mode params */
#define SIOCGIWAUTH     0x8B33            /* get authentication mode params */

/* WPA : Extended version of encoding configuration */
#define SIOCSIWENCODEEXT 0x8B34           /* set encoding token & mode */
#define SIOCGIWENCODEEXT 0x8B35           /* get encoding token & mode */

/* WPA2 : PMKSA cache management */
#define SIOCSIWPMKSA    0x8B36            /* PMKSA cache operation */

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

/* These 32 ioctl are wireless device private, for 16 commands.
 * 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 'even' 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). More details in iwpriv.c.
 * And I repeat : you are not forced to use them with iwpriv, but you
 * must be compliant with it.
 */

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

/* The first and the last (range) */
#define SIOCIWFIRST     0x8B00
#define SIOCIWLAST      SIOCIWLASTPRIV          /* 0x8BFF */
#define IW_IOCTL_IDX(cmd)     ((cmd) - SIOCIWFIRST)

/* Odd : get (world access), even : 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 IWEVGENIE 0x8C05            /* Generic IE (WPA, RSN, WMM, ..)
                               * (scan results); This includes id and
                               * length fields. One IWEVGENIE may
                               * contain more than one IE. Scan
                               * results may contain one or more
                               * IWEVGENIE events. */
#define IWEVMICHAELMICFAILURE 0x8C06      /* Michael MIC failure
                               * (struct iw_michaelmicfailure)
                               */
#define IWEVASSOCREQIE  0x8C07            /* IEs used in (Re)Association Request.
                               * The data includes id and length
                               * fields and may contain more than one
                               * IE. This event is required in
                               * Managed mode if the driver
                               * generates its own WPA/RSN IE. This
                               * should be sent just before
                               * IWEVREGISTERED event for the
                               * association. */
#define IWEVASSOCRESPIE 0x8C08            /* IEs used in (Re)Association
                               * Response. The data includes id and
                               * length fields and may contain more
                               * than one IE. This may be sent
                               * between IWEVASSOCREQIE and
                               * IWEVREGISTERED events for the
                               * association. */
#define IWEVPMKIDCAND   0x8C09            /* PMKID candidate for RSN
                               * pre-authentication
                               * (struct iw_pmkid_cand) */

#define IWEVFIRST 0x8C00
#define IW_EVENT_IDX(cmd)     ((cmd) - IWEVFIRST)

/* ------------------------- 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) */

/* Statistics flags (bitmask in updated) */
#define IW_QUAL_QUAL_UPDATED  0x01  /* Value was updated since last read */
#define IW_QUAL_LEVEL_UPDATED 0x02
#define IW_QUAL_NOISE_UPDATED 0x04
#define IW_QUAL_ALL_UPDATED   0x07
#define IW_QUAL_DBM           0x08  /* Level + Noise are dBm */
#define IW_QUAL_QUAL_INVALID  0x10  /* Driver doesn't provide value */
#define IW_QUAL_LEVEL_INVALID 0x20
#define IW_QUAL_NOISE_INVALID 0x40
#define IW_QUAL_RCPI          0x80  /* Level + Noise are 802.11k RCPI */
#define IW_QUAL_ALL_INVALID   0x70

/* Frequency flags */
#define IW_FREQ_AUTO          0x00  /* Let the driver decides */
#define IW_FREQ_FIXED         0x01  /* Force a specific value */

/* 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 64    /* 512 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_RELATIVE     0x0002      /* Value is in arbitrary units */
#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     0x00FF      /* 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 */
#define IW_RETRY_SHORT        0x0010      /* Value is for short packets  */
#define IW_RETRY_LONG         0x0020      /* Value is for long packets */

/* 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 */
/* struct iw_scan_req scan_type */
#define IW_SCAN_TYPE_ACTIVE 0
#define IW_SCAN_TYPE_PASSIVE 1
/* 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 */

/* Generic information element */
#define IW_GENERIC_IE_MAX     1024

/* MLME requests (SIOCSIWMLME / struct iw_mlme) */
#define IW_MLME_DEAUTH        0
#define IW_MLME_DISASSOC      1
#define IW_MLME_AUTH          2
#define IW_MLME_ASSOC         3

/* SIOCSIWAUTH/SIOCGIWAUTH struct iw_param flags */
#define IW_AUTH_INDEX         0x0FFF
#define IW_AUTH_FLAGS         0xF000
/* SIOCSIWAUTH/SIOCGIWAUTH parameters (0 .. 4095)
 * (IW_AUTH_INDEX mask in struct iw_param flags; this is the index of the
 * parameter that is being set/get to; value will be read/written to
 * struct iw_param value field) */
#define IW_AUTH_WPA_VERSION         0
#define IW_AUTH_CIPHER_PAIRWISE           1
#define IW_AUTH_CIPHER_GROUP        2
#define IW_AUTH_KEY_MGMT            3
#define IW_AUTH_TKIP_COUNTERMEASURES      4
#define IW_AUTH_DROP_UNENCRYPTED    5
#define IW_AUTH_80211_AUTH_ALG            6
#define IW_AUTH_WPA_ENABLED         7
#define IW_AUTH_RX_UNENCRYPTED_EAPOL      8
#define IW_AUTH_ROAMING_CONTROL           9
#define IW_AUTH_PRIVACY_INVOKED           10

/* IW_AUTH_WPA_VERSION values (bit field) */
#define IW_AUTH_WPA_VERSION_DISABLED      0x00000001
#define IW_AUTH_WPA_VERSION_WPA           0x00000002
#define IW_AUTH_WPA_VERSION_WPA2    0x00000004

/* IW_AUTH_PAIRWISE_CIPHER and IW_AUTH_GROUP_CIPHER values (bit field) */
#define IW_AUTH_CIPHER_NONE   0x00000001
#define IW_AUTH_CIPHER_WEP40  0x00000002
#define IW_AUTH_CIPHER_TKIP   0x00000004
#define IW_AUTH_CIPHER_CCMP   0x00000008
#define IW_AUTH_CIPHER_WEP104 0x00000010

/* IW_AUTH_KEY_MGMT values (bit field) */
#define IW_AUTH_KEY_MGMT_802_1X     1
#define IW_AUTH_KEY_MGMT_PSK  2

/* IW_AUTH_80211_AUTH_ALG values (bit field) */
#define IW_AUTH_ALG_OPEN_SYSTEM     0x00000001
#define IW_AUTH_ALG_SHARED_KEY      0x00000002
#define IW_AUTH_ALG_LEAP      0x00000004

/* IW_AUTH_ROAMING_CONTROL values */
#define IW_AUTH_ROAMING_ENABLE      0     /* driver/firmware based roaming */
#define IW_AUTH_ROAMING_DISABLE     1     /* user space program used for roaming
                               * control */

/* SIOCSIWENCODEEXT definitions */
#define IW_ENCODE_SEQ_MAX_SIZE      8
/* struct iw_encode_ext ->alg */
#define IW_ENCODE_ALG_NONE    0
#define IW_ENCODE_ALG_WEP     1
#define IW_ENCODE_ALG_TKIP    2
#define IW_ENCODE_ALG_CCMP    3
/* struct iw_encode_ext ->ext_flags */
#define IW_ENCODE_EXT_TX_SEQ_VALID  0x00000001
#define IW_ENCODE_EXT_RX_SEQ_VALID  0x00000002
#define IW_ENCODE_EXT_GROUP_KEY           0x00000004
#define IW_ENCODE_EXT_SET_TX_KEY    0x00000008

/* IWEVMICHAELMICFAILURE : struct iw_michaelmicfailure ->flags */
#define IW_MICFAILURE_KEY_ID  0x00000003 /* Key ID 0..3 */
#define IW_MICFAILURE_GROUP   0x00000004
#define IW_MICFAILURE_PAIRWISE      0x00000008
#define IW_MICFAILURE_STAKEY  0x00000010
#define IW_MICFAILURE_COUNT   0x00000060 /* 1 or 2 (0 = count not supported)
                                  */

/* Bit field values for enc_capa in struct iw_range */
#define IW_ENC_CAPA_WPA       0x00000001
#define IW_ENC_CAPA_WPA2      0x00000002
#define IW_ENC_CAPA_CIPHER_TKIP     0x00000004
#define IW_ENC_CAPA_CIPHER_CCMP     0x00000008

/* Event capability macros - in (struct iw_range *)->event_capa
 * Because we have more than 32 possible events, we use an array of
 * 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */
#define IW_EVENT_CAPA_BASE(cmd)           ((cmd >= SIOCIWFIRSTPRIV) ? \
                               (cmd - SIOCIWFIRSTPRIV + 0x60) : \
                               (cmd - SIOCSIWCOMMIT))
#define IW_EVENT_CAPA_INDEX(cmd)    (IW_EVENT_CAPA_BASE(cmd) >> 5)
#define IW_EVENT_CAPA_MASK(cmd)           (1 << (IW_EVENT_CAPA_BASE(cmd) & 0x1F))
/* Event capability constants - event autogenerated by the kernel
 * This list is valid for most 802.11 devices, customise as needed... */
#define IW_EVENT_CAPA_K_0     (IW_EVENT_CAPA_MASK(0x8B04) | \
                         IW_EVENT_CAPA_MASK(0x8B06) | \
                         IW_EVENT_CAPA_MASK(0x8B1A))
#define IW_EVENT_CAPA_K_1     (IW_EVENT_CAPA_MASK(0x8B2A))
/* "Easy" macro to set events in iw_range (less efficient) */
#define IW_EVENT_CAPA_SET(event_capa, cmd) (event_capa[IW_EVENT_CAPA_INDEX(cmd)] |= IW_EVENT_CAPA_MASK(cmd))
#define IW_EVENT_CAPA_SET_KERNEL(event_capa) {event_capa[0] |= IW_EVENT_CAPA_K_0; event_capa[1] |= IW_EVENT_CAPA_K_1; }


/****************************** 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
{
  void __user     *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        flags;            /* Flags (fixed/auto) */
};

/*
 *    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 */
};

/*
 *    Optional data for scan request
 *
 *    Note: these optional parameters are controlling parameters for the
 *    scanning behavior, these do not apply to getting scan results
 *    (SIOCGIWSCAN). Drivers are expected to keep a local BSS table and
 *    provide a merged results with all BSSes even if the previous scan
 *    request limited scanning to a subset, e.g., by specifying an SSID.
 *    Especially, scan results are required to include an entry for the
 *    current BSS if the driver is in Managed mode and associated with an AP.
 */
struct      iw_scan_req
{
      __u8        scan_type; /* IW_SCAN_TYPE_{ACTIVE,PASSIVE} */
      __u8        essid_len;
      __u8        num_channels; /* num entries in channel_list;
                               * 0 = scan all allowed channels */
      __u8        flags; /* reserved as padding; use zero, this may
                        * be used in the future for adding flags
                        * to request different scan behavior */
      struct sockaddr   bssid; /* ff:ff:ff:ff:ff:ff for broadcast BSSID or
                        * individual address of a specific BSS */

      /*
       * Use this ESSID if IW_SCAN_THIS_ESSID flag is used instead of using
       * the current ESSID. This allows scan requests for specific ESSID
       * without having to change the current ESSID and potentially breaking
       * the current association.
       */
      __u8        essid[IW_ESSID_MAX_SIZE];

      /*
       * Optional parameters for changing the default scanning behavior.
       * These are based on the MLME-SCAN.request from IEEE Std 802.11.
       * TU is 1.024 ms. If these are set to 0, driver is expected to use
       * reasonable default values. min_channel_time defines the time that
       * will be used to wait for the first reply on each channel. If no
       * replies are received, next channel will be scanned after this. If
       * replies are received, total time waited on the channel is defined by
       * max_channel_time.
       */
      __u32       min_channel_time; /* in TU */
      __u32       max_channel_time; /* in TU */

      struct iw_freq    channel_list[IW_MAX_FREQUENCIES];
};

/* ------------------------- WPA SUPPORT ------------------------- */

/*
 *    Extended data structure for get/set encoding (this is used with
 *    SIOCSIWENCODEEXT/SIOCGIWENCODEEXT. struct iw_point and IW_ENCODE_*
 *    flags are used in the same way as with SIOCSIWENCODE/SIOCGIWENCODE and
 *    only the data contents changes (key data -> this structure, including
 *    key data).
 *
 *    If the new key is the first group key, it will be set as the default
 *    TX key. Otherwise, default TX key index is only changed if
 *    IW_ENCODE_EXT_SET_TX_KEY flag is set.
 *
 *    Key will be changed with SIOCSIWENCODEEXT in all cases except for
 *    special "change TX key index" operation which is indicated by setting
 *    key_len = 0 and ext_flags |= IW_ENCODE_EXT_SET_TX_KEY.
 *
 *    tx_seq/rx_seq are only used when respective
 *    IW_ENCODE_EXT_{TX,RX}_SEQ_VALID flag is set in ext_flags. Normal
 *    TKIP/CCMP operation is to set RX seq with SIOCSIWENCODEEXT and start
 *    TX seq from zero whenever key is changed. SIOCGIWENCODEEXT is normally
 *    used only by an Authenticator (AP or an IBSS station) to get the
 *    current TX sequence number. Using TX_SEQ_VALID for SIOCSIWENCODEEXT and
 *    RX_SEQ_VALID for SIOCGIWENCODEEXT are optional, but can be useful for
 *    debugging/testing.
 */
struct      iw_encode_ext
{
      __u32       ext_flags; /* IW_ENCODE_EXT_* */
      __u8        tx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
      __u8        rx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
      struct sockaddr   addr; /* ff:ff:ff:ff:ff:ff for broadcast/multicast
                         * (group) keys or unicast address for
                         * individual keys */
      __u16       alg; /* IW_ENCODE_ALG_* */
      __u16       key_len;
      __u8        key[0];
};

/* SIOCSIWMLME data */
struct      iw_mlme
{
      __u16       cmd; /* IW_MLME_* */
      __u16       reason_code;
      struct sockaddr   addr;
};

/* SIOCSIWPMKSA data */
#define IW_PMKSA_ADD          1
#define IW_PMKSA_REMOVE       2
#define IW_PMKSA_FLUSH        3

#define IW_PMKID_LEN    16

struct      iw_pmksa
{
      __u32       cmd; /* IW_PMKSA_* */
      struct sockaddr   bssid;
      __u8        pmkid[IW_PMKID_LEN];
};

/* IWEVMICHAELMICFAILURE data */
struct      iw_michaelmicfailure
{
      __u32       flags;
      struct sockaddr   src_addr;
      __u8        tsc[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
};

/* IWEVPMKIDCAND data */
#define IW_PMKID_CAND_PREAUTH 0x00000001 /* RNS pre-authentication enabled */
struct      iw_pmkid_cand
{
      __u32       flags; /* IW_PMKID_CAND_* */
      __u32       index; /* the smaller the index, the higher the
                        * priority */
      struct sockaddr   bssid;
};

/* ------------------------ 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;

      /* Wireless event capability bitmasks */
      __u32       event_capa[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 */

      __u32       enc_capa;   /* IW_ENC_CAPA_* bit field */
};

/*
 * 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_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))

/* iw_point events are special. First, the payload (extra data) come at
 * the end of the event, so they are bigger than IW_EV_POINT_LEN. Second,
 * we omit the pointer, so start at an offset. */
#define IW_EV_POINT_OFF (((char *) &(((struct iw_point *) NULL)->length)) - \
                    (char *) NULL)
#define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point) - \
                   IW_EV_POINT_OFF)

/* Size of the Event prefix when packed in stream */
#define IW_EV_LCP_PK_LEN      (4)
/* Size of the various events when packed in stream */
#define IW_EV_CHAR_PK_LEN     (IW_EV_LCP_PK_LEN + IFNAMSIZ)
#define IW_EV_UINT_PK_LEN     (IW_EV_LCP_PK_LEN + sizeof(__u32))
#define IW_EV_FREQ_PK_LEN     (IW_EV_LCP_PK_LEN + sizeof(struct iw_freq))
#define IW_EV_PARAM_PK_LEN    (IW_EV_LCP_PK_LEN + sizeof(struct iw_param))
#define IW_EV_ADDR_PK_LEN     (IW_EV_LCP_PK_LEN + sizeof(struct sockaddr))
#define IW_EV_QUAL_PK_LEN     (IW_EV_LCP_PK_LEN + sizeof(struct iw_quality))
#define IW_EV_POINT_PK_LEN    (IW_EV_LCP_LEN + 4)

#endif      /* _LINUX_WIRELESS_H */

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