hostap/testing/wireless/wireless-6.h

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/*
* This file define a set of standard wireless extensions
*
* Version : 7 23.4.99
*
* Authors : Jean Tourrilhes - HPLB - <jt@hplb.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 *****************************/
#if 0
#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
/**************************** 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 6
/*
* 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
*/
/* -------------------------- IOCTL LIST -------------------------- */
/* Basic operations */
#define SIOCSIWNAME 0x8B00 /* Unused ??? */
#define SIOCGIWNAME 0x8B01 /* get name */
#define SIOCSIWNWID 0x8B02 /* set network id */
#define SIOCGIWNWID 0x8B03 /* get network id */
#define SIOCSIWFREQ 0x8B04 /* set channel/frequency */
#define SIOCGIWFREQ 0x8B05 /* get channel/frequency */
#define SIOCSIWENCODE 0x8B06 /* set encoding info */
#define SIOCGIWENCODE 0x8B07 /* get encoding info */
#define SIOCSIWSENS 0x8B08 /* set sensitivity */
#define SIOCGIWSENS 0x8B09 /* get sensitivity */
/* 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 */
/* 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 hardware addresses */
#define SIOCGIWAP 0x8B15 /* get access point hardware 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 */
/* As the ESSID is a string 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.
*/
/* ------------------------- IOCTL STUFF ------------------------- */
/* The first and the last (range) */
#define SIOCIWFIRST 0x8B00
#define SIOCIWLAST 0x8B1B
/* 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 SIOCDEVPRIVATE -> SIOCDEVPRIVATE + 0xF
*/
#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 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 string */
#define IW_ESSID_MAX_SIZE 32
/****************************** TYPES ******************************/
/* --------------------------- SUBTYPES --------------------------- */
/*
* A frequency
* For numbers lower than 10^9, we encode the number in 'mant' and
* set 'exp' to 0
* For number greater than 10^9, we divide it by a power of 10.
* The power of 10 is in 'exp', the result is in 'mant'.
*/
struct iw_freq
{
__u32 m; /* Mantissa */
__u16 e; /* Exponent */
};
/*
* Quality of the link
*/
struct iw_quality
{
__u8 qual; /* link quality (SNR or better...) */
__u8 level; /* signal level */
__u8 noise; /* noise level */
__u8 updated; /* Flags to know if updated */
};
/*
* Packet discarded in the wireless adapter due to
* "wireless" specific problems...
*/
struct iw_discarded
{
__u32 nwid; /* Wrong nwid */
__u32 code; /* Unable to code/decode */
__u32 misc; /* Others cases */
};
/*
* Encoding information (setting and so on)
* Encoding might be hardware encryption, scrambing or others
*/
struct iw_encoding
{
__u8 method; /* Algorithm number / key used */
__u64 code; /* Data/key used for algorithm */
};
/* ------------------------ WIRELESS STATS ------------------------ */
/*
* Wireless statistics (used for /proc/net/wireless)
*/
struct iw_statistics
{
__u8 status; /* Status
* - device dependent for now */
struct iw_quality qual; /* Quality of the link
* (instant/mean/max) */
struct iw_discarded discard; /* Packet discarded 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. "en0" */
} 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 /* network id (or domain) : used to to */
{ /* create logical channels on the air */
__u32 nwid; /* value */
__u8 on; /* active/unactive nwid */
} nwid;
struct iw_freq freq; /* frequency or channel :
* 0-1000 = channel
* > 1000 = frequency in Hz */
struct iw_encoding encoding; /* Encoding stuff */
__u32 sensitivity; /* signal level threshold */
struct sockaddr ap_addr; /* Access point address */
struct /* For all data bigger than 16 octets */
{
caddr_t pointer; /* Pointer to the data
* (in user space) */
__u16 length; /* fields or byte size */
__u16 flags; /* Optional params */
} 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... */
/* 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 */
__u32 sensitivity;
/* Quality of link & SNR stuff */
struct iw_quality max_qual; /* Quality of the link */
/* Encoder stuff */
struct iw_encoding max_encoding; /* Encoding max range */
};
/*
* 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 */