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/*
* This file define a set of standard wireless extensions
*
* Version : 12 5.10.01
*
* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
*/
#ifndef _LINUX_WIRELESS_H
#define _LINUX_WIRELESS_H
/************************** DOCUMENTATION **************************/
/*
* 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)
*
* 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 "caddr_t" et al */
#include <linux/socket.h> /* for "struct sockaddr" et al */
#include <linux/if.h> /* for IFNAMSIZ and co... */
/**************************** CONSTANTS ****************************/
/* --------------------------- 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 12
/*
* 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)
*/
/* -------------------------- IOCTL LIST -------------------------- */
/* Basic operations */
#define SIOCSIWNAME 0x8B00 /* Unused */
#define SIOCGIWNAME 0x8B01 /* get name == wireless protocol */
#define SIOCSIWNWID 0x8B02 /* set network id (the cell) */
#define SIOCGIWNWID 0x8B03 /* get network id */
#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 */
/* Mobile IP support */
#define SIOCSIWSPY 0x8B10 /* set spy addresses */
#define SIOCGIWSPY 0x8B11 /* get spy info (quality of link) */
/* Access Point manipulation */
#define SIOCSIWAP 0x8B14 /* set access point MAC addresses */
#define SIOCGIWAP 0x8B15 /* get access point MAC addresses */
#define SIOCGIWAPLIST 0x8B17 /* get list of access point in range */
/* 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...
* The "flags" member indicate if the ESSID is active or not (promiscuous).
*/
/* Other parameters useful in 802.11 and some other devices */
#define SIOCSIWRATE 0x8B20 /* set default bit rate (bps) */
#define SIOCGIWRATE 0x8B21 /* get default bit rate (bps) */
#define SIOCSIWRTS 0x8B22 /* set RTS/CTS threshold (bytes) */
#define SIOCGIWRTS 0x8B23 /* get RTS/CTS threshold (bytes) */
#define SIOCSIWFRAG 0x8B24 /* set fragmentation thr (bytes) */
#define SIOCGIWFRAG 0x8B25 /* get fragmentation thr (bytes) */
#define SIOCSIWTXPOW 0x8B26 /* set transmit power (dBm) */
#define SIOCGIWTXPOW 0x8B27 /* get transmit power (dBm) */
#define SIOCSIWRETRY 0x8B28 /* set retry limits and lifetime */
#define SIOCGIWRETRY 0x8B29 /* get retry limits and lifetime */
/* Encoding stuff (scrambling, hardware security, WEP...) */
#define SIOCSIWENCODE 0x8B2A /* set encoding token & mode */
#define SIOCGIWENCODE 0x8B2B /* get encoding token & mode */
/* Power saving stuff (power management, unicast and multicast) */
#define SIOCSIWPOWER 0x8B2C /* set Power Management settings */
#define SIOCGIWPOWER 0x8B2D /* get Power Management settings */
/* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
/* These 16 ioctl are wireless device private.
* Each driver is free to use them for whatever purpose it chooses,
* however the driver *must* export the description of those ioctls
* with SIOCGIWPRIV and *must* use arguments as defined below.
* If you don't follow those rules, DaveM is going to hate you (reason :
* it make mixed 32/64bit operation impossible).
*/
#define SIOCIWFIRSTPRIV 0x8BE0
#define SIOCIWLASTPRIV 0x8BFF
/* Previously, we were using SIOCDEVPRIVATE, but we now have our
* separate range because of collisions with other tools such as
* 'mii-tool'.
* We now have 32 commands, so a bit more space ;-).
* Also, all 'odd' commands are only usable by root and don't return the
* content of ifr/iwr to user (but you are not obliged to use the set/get
* convention, just use every other two command).
* And I repeat : you are not obliged to use them with iwspy, but you
* must be compliant with it.
*/
/* ------------------------- IOCTL STUFF ------------------------- */
/* The first and the last (range) */
#define SIOCIWFIRST 0x8B00
#define SIOCIWLAST SIOCIWLASTPRIV /* 0x8BFF */
/* Even : get (world access), odd : set (root access) */
#define IW_IS_SET(cmd) (!((cmd) & 0x1))
#define IW_IS_GET(cmd) ((cmd) & 0x1)
/* ------------------------- 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
#define IW_PRIV_SIZE_FIXED 0x0800 /* Variable or fixed nuber 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 16
/* 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 8
/* Maximum tx powers in the range struct */
#define IW_MAX_TXPOWER 8
/* 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 8
/* 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) */
/* Maximum number of size of encoding token available
* they are listed in the range structure */
#define IW_MAX_ENCODING_SIZES 8
/* Maximum size of the encoding token in bytes */
#define IW_ENCODING_TOKEN_MAX 32 /* 256 bits (for now) */
/* Flags for encoding (along with the token) */
#define IW_ENCODE_INDEX 0x00FF /* Token index (if needed) */
#define IW_ENCODE_FLAGS 0xFF00 /* Flags defined below */
#define IW_ENCODE_MODE 0xF000 /* Modes defined below */
#define IW_ENCODE_DISABLED 0x8000 /* Encoding disabled */
#define IW_ENCODE_ENABLED 0x0000 /* Encoding enabled */
#define IW_ENCODE_RESTRICTED 0x4000 /* Refuse non-encoded packets */
#define IW_ENCODE_OPEN 0x2000 /* Accept non-encoded packets */
#define IW_ENCODE_NOKEY 0x0800 /* Key is write only, so not present */
/* 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_DBM 0x0000 /* Value is in dBm */
#define IW_TXPOW_MWATT 0x0001 /* Value is in mW */
/* Retry limits and lifetime flags available */
#define IW_RETRY_ON 0x0000 /* No details... */
#define IW_RETRY_TYPE 0xF000 /* Type of parameter */
#define IW_RETRY_LIMIT 0x1000 /* Maximum number of retries*/
#define IW_RETRY_LIFETIME 0x2000 /* Maximum duration of retries in us */
#define IW_RETRY_MODIFIER 0x000F /* Modify a parameter */
#define IW_RETRY_MIN 0x0001 /* Value is a minimum */
#define IW_RETRY_MAX 0x0002 /* Value is a maximum */
#define IW_RETRY_RELATIVE 0x0004 /* Value is not in seconds/ms/us */
/****************************** TYPES ******************************/
/* --------------------------- SUBTYPES --------------------------- */
/*
* Generic format for most parameters that fit in an int
*/
struct iw_param
{
__s32 value; /* The value of the parameter itself */
__u8 fixed; /* Hardware should not use auto select */
__u8 disabled; /* Disable the feature */
__u16 flags; /* Various specifc flags (if any) */
};
/*
* For all data larger than 16 octets, we need to use a
* pointer to memory allocated in user space.
*/
struct iw_point
{
caddr_t pointer; /* Pointer to the data (in user space) */
__u16 length; /* number of fields or size in bytes */
__u16 flags; /* Optional params */
};
/*
* A frequency
* For numbers lower than 10^9, we encode the number in 'm' and
* set 'e' to 0
* For number greater than 10^9, we divide it by the lowest power
* of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
* The power of 10 is in 'e', the result of the division is in 'm'.
*/
struct iw_freq
{
__u32 m; /* Mantissa */
__u16 e; /* Exponent */
__u8 i; /* List index (when in range struct) */
};
/*
* 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 */
};
/* ------------------------ 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 ------------------------ */
/*
* The structure to exchange data for ioctl.
* This structure is the same as 'struct ifreq', but (re)defined for
* convenience...
*
* Note that it should fit on the same memory footprint !
* You should check this when increasing the above structures (16 octets)
* 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
*/
struct iwreq
{
union
{
char ifrn_name[IFNAMSIZ]; /* if name, e.g. "eth0" */
} ifr_ifrn;
/* Data part */
union
{
/* 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 sockaddr ap_addr; /* Access point address */
struct iw_point data; /* Other large parameters */
} 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 */
/* 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 */
/* signal level threshold range */
__s32 sensitivity;
/* Quality of link & SNR stuff */
struct iw_quality max_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 */
/* 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 */
/* Average quality of link & SNR */
struct iw_quality avg_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...
*/
};
/*
* 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 */
};
#endif /* _LINUX_WIRELESS_H */
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