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linux-next/include/linux/wireless.h
Johannes Berg 1dacc76d00 net/compat/wext: send different messages to compat tasks 
Wireless extensions have the unfortunate problem that events
are multicast netlink messages, and are not independent of
pointer size. Thus, currently 32-bit tasks on 64-bit platforms
cannot properly receive events and fail with all kinds of
strange problems, for instance wpa_supplicant never notices
disassociations, due to the way the 64-bit event looks (to a
32-bit process), the fact that the address is all zeroes is
lost, it thinks instead it is 00:00:00:00:01:00.

The same problem existed with the ioctls, until David Miller
fixed those some time ago in an heroic effort.

A different problem caused by this is that we cannot send the
ASSOCREQIE/ASSOCRESPIE events because sending them causes a
32-bit wpa_supplicant on a 64-bit system to overwrite its
internal information, which is worse than it not getting the
information at all -- so we currently resort to sending a
custom string event that it then parses. This, however, has a
severe size limitation we are frequently hitting with modern
access points; this limitation would can be lifted after this
patch by sending the correct binary, not custom, event.

A similar problem apparently happens for some other netlink
users on x86_64 with 32-bit tasks due to the alignment for
64-bit quantities.

In order to fix these problems, I have implemented a way to
send compat messages to tasks. When sending an event, we send
the non-compat event data together with a compat event data in
skb_shinfo(main_skb)->frag_list. Then, when the event is read
from the socket, the netlink code makes sure to pass out only
the skb that is compatible with the task. This approach was
suggested by David Miller, my original approach required
always sending two skbs but that had various small problems.

To determine whether compat is needed or not, I have used the
MSG_CMSG_COMPAT flag, and adjusted the call path for recv and
recvfrom to include it, even if those calls do not have a cmsg
parameter.

I have not solved one small part of the problem, and I don't
think it is necessary to: if a 32-bit application uses read()
rather than any form of recvmsg() it will still get the wrong
(64-bit) event. However, neither do applications actually do
this, nor would it be a regression.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-15 08:53:39 -07:00

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/*
* 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 *****************************/
#include <linux/types.h> /* for __u* and __s* typedefs */
#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 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) */
#define IW_MODE_MESH 7 /* Mesh (IEEE 802.11s) network */
/* 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 */
/* Scan capability flags - in (struct iw_range *)->scan_capa */
#define IW_SCAN_CAPA_NONE 0x00
#define IW_SCAN_CAPA_ESSID 0x01
#define IW_SCAN_CAPA_BSSID 0x02
#define IW_SCAN_CAPA_CHANNEL 0x04
#define IW_SCAN_CAPA_MODE 0x08
#define IW_SCAN_CAPA_RATE 0x10
#define IW_SCAN_CAPA_TYPE 0x20
#define IW_SCAN_CAPA_TIME 0x40
/* 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
#define IW_AUTH_CIPHER_GROUP_MGMT 11
#define IW_AUTH_MFP 12
/* 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, IW_AUTH_GROUP_CIPHER, and IW_AUTH_CIPHER_GROUP_MGMT
* 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
#define IW_AUTH_CIPHER_AES_CMAC 0x00000020
/* 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 */
/* IW_AUTH_MFP (management frame protection) values */
#define IW_AUTH_MFP_DISABLED 0 /* MFP disabled */
#define IW_AUTH_MFP_OPTIONAL 1 /* MFP optional */
#define IW_AUTH_MFP_REQUIRED 2 /* MFP required */
/* 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
#define IW_ENCODE_ALG_PMK 4
#define IW_ENCODE_ALG_AES_CMAC 5
/* 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
#define IW_ENC_CAPA_4WAY_HANDSHAKE 0x00000010
/* 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 */
};
#ifdef __KERNEL__
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
struct compat_iw_point {
compat_caddr_t pointer;
__u16 length;
__u16 flags;
};
#endif
#endif
/*
* 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;
/* Scan capabilities */
__u8 scan_capa; /* IW_SCAN_CAPA_* bit field */
/* 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 length 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)
#ifdef __KERNEL__
#ifdef CONFIG_COMPAT
struct __compat_iw_event {
__u16 len; /* Real length of this stuff */
__u16 cmd; /* Wireless IOCTL */
compat_caddr_t pointer;
};
#define IW_EV_COMPAT_LCP_LEN offsetof(struct __compat_iw_event, pointer)
#define IW_EV_COMPAT_POINT_OFF offsetof(struct compat_iw_point, length)
/* Size of the various events for compat */
#define IW_EV_COMPAT_CHAR_LEN (IW_EV_COMPAT_LCP_LEN + IFNAMSIZ)
#define IW_EV_COMPAT_UINT_LEN (IW_EV_COMPAT_LCP_LEN + sizeof(__u32))
#define IW_EV_COMPAT_FREQ_LEN (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_freq))
#define IW_EV_COMPAT_PARAM_LEN (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_param))
#define IW_EV_COMPAT_ADDR_LEN (IW_EV_COMPAT_LCP_LEN + sizeof(struct sockaddr))
#define IW_EV_COMPAT_QUAL_LEN (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_quality))
#define IW_EV_COMPAT_POINT_LEN \
(IW_EV_COMPAT_LCP_LEN + sizeof(struct compat_iw_point) - \
IW_EV_COMPAT_POINT_OFF)
#endif
#endif
/* 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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