--- /dev/null
+/*
+ * 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 */
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