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Linux/include/linux/wireless.h

  1 /*
  2  * This file define a set of standard wireless extensions
  3  *
  4  * Version :    22      16.3.07
  5  *
  6  * Authors :    Jean Tourrilhes - HPL - <jt@hpl.hp.com>
  7  * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
  8  */
  9 
 10 #ifndef _LINUX_WIRELESS_H
 11 #define _LINUX_WIRELESS_H
 12 
 13 /************************** DOCUMENTATION **************************/
 14 /*
 15  * Initial APIs (1996 -> onward) :
 16  * -----------------------------
 17  * Basically, the wireless extensions are for now a set of standard ioctl
 18  * call + /proc/net/wireless
 19  *
 20  * The entry /proc/net/wireless give statistics and information on the
 21  * driver.
 22  * This is better than having each driver having its entry because
 23  * its centralised and we may remove the driver module safely.
 24  *
 25  * Ioctl are used to configure the driver and issue commands.  This is
 26  * better than command line options of insmod because we may want to
 27  * change dynamically (while the driver is running) some parameters.
 28  *
 29  * The ioctl mechanimsm are copied from standard devices ioctl.
 30  * We have the list of command plus a structure descibing the
 31  * data exchanged...
 32  * Note that to add these ioctl, I was obliged to modify :
 33  *      # net/core/dev.c (two place + add include)
 34  *      # net/ipv4/af_inet.c (one place + add include)
 35  *
 36  * /proc/net/wireless is a copy of /proc/net/dev.
 37  * We have a structure for data passed from the driver to /proc/net/wireless
 38  * Too add this, I've modified :
 39  *      # net/core/dev.c (two other places)
 40  *      # include/linux/netdevice.h (one place)
 41  *      # include/linux/proc_fs.h (one place)
 42  *
 43  * New driver API (2002 -> onward) :
 44  * -------------------------------
 45  * This file is only concerned with the user space API and common definitions.
 46  * The new driver API is defined and documented in :
 47  *      # include/net/iw_handler.h
 48  *
 49  * Note as well that /proc/net/wireless implementation has now moved in :
 50  *      # net/core/wireless.c
 51  *
 52  * Wireless Events (2002 -> onward) :
 53  * --------------------------------
 54  * Events are defined at the end of this file, and implemented in :
 55  *      # net/core/wireless.c
 56  *
 57  * Other comments :
 58  * --------------
 59  * Do not add here things that are redundant with other mechanisms
 60  * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
 61  * wireless specific.
 62  *
 63  * These wireless extensions are not magic : each driver has to provide
 64  * support for them...
 65  *
 66  * IMPORTANT NOTE : As everything in the kernel, this is very much a
 67  * work in progress. Contact me if you have ideas of improvements...
 68  */
 69 
 70 /***************************** INCLUDES *****************************/
 71 
 72 #include <linux/types.h>                /* for __u* and __s* typedefs */
 73 #include <linux/socket.h>               /* for "struct sockaddr" et al  */
 74 #include <linux/if.h>                   /* for IFNAMSIZ and co... */
 75 
 76 /***************************** VERSION *****************************/
 77 /*
 78  * This constant is used to know the availability of the wireless
 79  * extensions and to know which version of wireless extensions it is
 80  * (there is some stuff that will be added in the future...)
 81  * I just plan to increment with each new version.
 82  */
 83 #define WIRELESS_EXT    22
 84 
 85 /*
 86  * Changes :
 87  *
 88  * V2 to V3
 89  * --------
 90  *      Alan Cox start some incompatibles changes. I've integrated a bit more.
 91  *      - Encryption renamed to Encode to avoid US regulation problems
 92  *      - Frequency changed from float to struct to avoid problems on old 386
 93  *
 94  * V3 to V4
 95  * --------
 96  *      - Add sensitivity
 97  *
 98  * V4 to V5
 99  * --------
100  *      - Missing encoding definitions in range
101  *      - Access points stuff
102  *
103  * V5 to V6
104  * --------
105  *      - 802.11 support (ESSID ioctls)
106  *
107  * V6 to V7
108  * --------
109  *      - define IW_ESSID_MAX_SIZE and IW_MAX_AP
110  *
111  * V7 to V8
112  * --------
113  *      - Changed my e-mail address
114  *      - More 802.11 support (nickname, rate, rts, frag)
115  *      - List index in frequencies
116  *
117  * V8 to V9
118  * --------
119  *      - Support for 'mode of operation' (ad-hoc, managed...)
120  *      - Support for unicast and multicast power saving
121  *      - Change encoding to support larger tokens (>64 bits)
122  *      - Updated iw_params (disable, flags) and use it for NWID
123  *      - Extracted iw_point from iwreq for clarity
124  *
125  * V9 to V10
126  * ---------
127  *      - Add PM capability to range structure
128  *      - Add PM modifier : MAX/MIN/RELATIVE
129  *      - Add encoding option : IW_ENCODE_NOKEY
130  *      - Add TxPower ioctls (work like TxRate)
131  *
132  * V10 to V11
133  * ----------
134  *      - Add WE version in range (help backward/forward compatibility)
135  *      - Add retry ioctls (work like PM)
136  *
137  * V11 to V12
138  * ----------
139  *      - Add SIOCSIWSTATS to get /proc/net/wireless programatically
140  *      - Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space
141  *      - Add new statistics (frag, retry, beacon)
142  *      - Add average quality (for user space calibration)
143  *
144  * V12 to V13
145  * ----------
146  *      - Document creation of new driver API.
147  *      - Extract union iwreq_data from struct iwreq (for new driver API).
148  *      - Rename SIOCSIWNAME as SIOCSIWCOMMIT
149  *
150  * V13 to V14
151  * ----------
152  *      - Wireless Events support : define struct iw_event
153  *      - Define additional specific event numbers
154  *      - Add "addr" and "param" fields in union iwreq_data
155  *      - AP scanning stuff (SIOCSIWSCAN and friends)
156  *
157  * V14 to V15
158  * ----------
159  *      - Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg
160  *      - Make struct iw_freq signed (both m & e), add explicit padding
161  *      - Add IWEVCUSTOM for driver specific event/scanning token
162  *      - Add IW_MAX_GET_SPY for driver returning a lot of addresses
163  *      - Add IW_TXPOW_RANGE for range of Tx Powers
164  *      - Add IWEVREGISTERED & IWEVEXPIRED events for Access Points
165  *      - Add IW_MODE_MONITOR for passive monitor
166  *
167  * V15 to V16
168  * ----------
169  *      - Increase the number of bitrates in iw_range to 32 (for 802.11g)
170  *      - Increase the number of frequencies in iw_range to 32 (for 802.11b+a)
171  *      - Reshuffle struct iw_range for increases, add filler
172  *      - Increase IW_MAX_AP to 64 for driver returning a lot of addresses
173  *      - Remove IW_MAX_GET_SPY because conflict with enhanced spy support
174  *      - Add SIOCSIWTHRSPY/SIOCGIWTHRSPY and "struct iw_thrspy"
175  *      - Add IW_ENCODE_TEMP and iw_range->encoding_login_index
176  *
177  * V16 to V17
178  * ----------
179  *      - Add flags to frequency -> auto/fixed
180  *      - Document (struct iw_quality *)->updated, add new flags (INVALID)
181  *      - Wireless Event capability in struct iw_range
182  *      - Add support for relative TxPower (yick !)
183  *
184  * V17 to V18 (From Jouni Malinen <j@w1.fi>)
185  * ----------
186  *      - Add support for WPA/WPA2
187  *      - Add extended encoding configuration (SIOCSIWENCODEEXT and
188  *        SIOCGIWENCODEEXT)
189  *      - Add SIOCSIWGENIE/SIOCGIWGENIE
190  *      - Add SIOCSIWMLME
191  *      - Add SIOCSIWPMKSA
192  *      - Add struct iw_range bit field for supported encoding capabilities
193  *      - Add optional scan request parameters for SIOCSIWSCAN
194  *      - Add SIOCSIWAUTH/SIOCGIWAUTH for setting authentication and WPA
195  *        related parameters (extensible up to 4096 parameter values)
196  *      - Add wireless events: IWEVGENIE, IWEVMICHAELMICFAILURE,
197  *        IWEVASSOCREQIE, IWEVASSOCRESPIE, IWEVPMKIDCAND
198  *
199  * V18 to V19
200  * ----------
201  *      - Remove (struct iw_point *)->pointer from events and streams
202  *      - Remove header includes to help user space
203  *      - Increase IW_ENCODING_TOKEN_MAX from 32 to 64
204  *      - Add IW_QUAL_ALL_UPDATED and IW_QUAL_ALL_INVALID macros
205  *      - Add explicit flag to tell stats are in dBm : IW_QUAL_DBM
206  *      - Add IW_IOCTL_IDX() and IW_EVENT_IDX() macros
207  *
208  * V19 to V20
209  * ----------
210  *      - RtNetlink requests support (SET/GET)
211  *
212  * V20 to V21
213  * ----------
214  *      - Remove (struct net_device *)->get_wireless_stats()
215  *      - Change length in ESSID and NICK to strlen() instead of strlen()+1
216  *      - Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
217  *      - Power/Retry relative values no longer * 100000
218  *      - Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
219  *
220  * V21 to V22
221  * ----------
222  *      - Prevent leaking of kernel space in stream on 64 bits.
223  */
224 
225 /**************************** CONSTANTS ****************************/
226 
227 /* -------------------------- IOCTL LIST -------------------------- */
228 
229 /* Wireless Identification */
230 #define SIOCSIWCOMMIT   0x8B00          /* Commit pending changes to driver */
231 #define SIOCGIWNAME     0x8B01          /* get name == wireless protocol */
232 /* SIOCGIWNAME is used to verify the presence of Wireless Extensions.
233  * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"...
234  * Don't put the name of your driver there, it's useless. */
235 
236 /* Basic operations */
237 #define SIOCSIWNWID     0x8B02          /* set network id (pre-802.11) */
238 #define SIOCGIWNWID     0x8B03          /* get network id (the cell) */
239 #define SIOCSIWFREQ     0x8B04          /* set channel/frequency (Hz) */
240 #define SIOCGIWFREQ     0x8B05          /* get channel/frequency (Hz) */
241 #define SIOCSIWMODE     0x8B06          /* set operation mode */
242 #define SIOCGIWMODE     0x8B07          /* get operation mode */
243 #define SIOCSIWSENS     0x8B08          /* set sensitivity (dBm) */
244 #define SIOCGIWSENS     0x8B09          /* get sensitivity (dBm) */
245 
246 /* Informative stuff */
247 #define SIOCSIWRANGE    0x8B0A          /* Unused */
248 #define SIOCGIWRANGE    0x8B0B          /* Get range of parameters */
249 #define SIOCSIWPRIV     0x8B0C          /* Unused */
250 #define SIOCGIWPRIV     0x8B0D          /* get private ioctl interface info */
251 #define SIOCSIWSTATS    0x8B0E          /* Unused */
252 #define SIOCGIWSTATS    0x8B0F          /* Get /proc/net/wireless stats */
253 /* SIOCGIWSTATS is strictly used between user space and the kernel, and
254  * is never passed to the driver (i.e. the driver will never see it). */
255 
256 /* Spy support (statistics per MAC address - used for Mobile IP support) */
257 #define SIOCSIWSPY      0x8B10          /* set spy addresses */
258 #define SIOCGIWSPY      0x8B11          /* get spy info (quality of link) */
259 #define SIOCSIWTHRSPY   0x8B12          /* set spy threshold (spy event) */
260 #define SIOCGIWTHRSPY   0x8B13          /* get spy threshold */
261 
262 /* Access Point manipulation */
263 #define SIOCSIWAP       0x8B14          /* set access point MAC addresses */
264 #define SIOCGIWAP       0x8B15          /* get access point MAC addresses */
265 #define SIOCGIWAPLIST   0x8B17          /* Deprecated in favor of scanning */
266 #define SIOCSIWSCAN     0x8B18          /* trigger scanning (list cells) */
267 #define SIOCGIWSCAN     0x8B19          /* get scanning results */
268 
269 /* 802.11 specific support */
270 #define SIOCSIWESSID    0x8B1A          /* set ESSID (network name) */
271 #define SIOCGIWESSID    0x8B1B          /* get ESSID */
272 #define SIOCSIWNICKN    0x8B1C          /* set node name/nickname */
273 #define SIOCGIWNICKN    0x8B1D          /* get node name/nickname */
274 /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
275  * within the 'iwreq' structure, so we need to use the 'data' member to
276  * point to a string in user space, like it is done for RANGE... */
277 
278 /* Other parameters useful in 802.11 and some other devices */
279 #define SIOCSIWRATE     0x8B20          /* set default bit rate (bps) */
280 #define SIOCGIWRATE     0x8B21          /* get default bit rate (bps) */
281 #define SIOCSIWRTS      0x8B22          /* set RTS/CTS threshold (bytes) */
282 #define SIOCGIWRTS      0x8B23          /* get RTS/CTS threshold (bytes) */
283 #define SIOCSIWFRAG     0x8B24          /* set fragmentation thr (bytes) */
284 #define SIOCGIWFRAG     0x8B25          /* get fragmentation thr (bytes) */
285 #define SIOCSIWTXPOW    0x8B26          /* set transmit power (dBm) */
286 #define SIOCGIWTXPOW    0x8B27          /* get transmit power (dBm) */
287 #define SIOCSIWRETRY    0x8B28          /* set retry limits and lifetime */
288 #define SIOCGIWRETRY    0x8B29          /* get retry limits and lifetime */
289 
290 /* Encoding stuff (scrambling, hardware security, WEP...) */
291 #define SIOCSIWENCODE   0x8B2A          /* set encoding token & mode */
292 #define SIOCGIWENCODE   0x8B2B          /* get encoding token & mode */
293 /* Power saving stuff (power management, unicast and multicast) */
294 #define SIOCSIWPOWER    0x8B2C          /* set Power Management settings */
295 #define SIOCGIWPOWER    0x8B2D          /* get Power Management settings */
296 
297 /* WPA : Generic IEEE 802.11 informatiom element (e.g., for WPA/RSN/WMM).
298  * This ioctl uses struct iw_point and data buffer that includes IE id and len
299  * fields. More than one IE may be included in the request. Setting the generic
300  * IE to empty buffer (len=0) removes the generic IE from the driver. Drivers
301  * are allowed to generate their own WPA/RSN IEs, but in these cases, drivers
302  * are required to report the used IE as a wireless event, e.g., when
303  * associating with an AP. */
304 #define SIOCSIWGENIE    0x8B30          /* set generic IE */
305 #define SIOCGIWGENIE    0x8B31          /* get generic IE */
306 
307 /* WPA : IEEE 802.11 MLME requests */
308 #define SIOCSIWMLME     0x8B16          /* request MLME operation; uses
309                                          * struct iw_mlme */
310 /* WPA : Authentication mode parameters */
311 #define SIOCSIWAUTH     0x8B32          /* set authentication mode params */
312 #define SIOCGIWAUTH     0x8B33          /* get authentication mode params */
313 
314 /* WPA : Extended version of encoding configuration */
315 #define SIOCSIWENCODEEXT 0x8B34         /* set encoding token & mode */
316 #define SIOCGIWENCODEEXT 0x8B35         /* get encoding token & mode */
317 
318 /* WPA2 : PMKSA cache management */
319 #define SIOCSIWPMKSA    0x8B36          /* PMKSA cache operation */
320 
321 /* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
322 
323 /* These 32 ioctl are wireless device private, for 16 commands.
324  * Each driver is free to use them for whatever purpose it chooses,
325  * however the driver *must* export the description of those ioctls
326  * with SIOCGIWPRIV and *must* use arguments as defined below.
327  * If you don't follow those rules, DaveM is going to hate you (reason :
328  * it make mixed 32/64bit operation impossible).
329  */
330 #define SIOCIWFIRSTPRIV 0x8BE0
331 #define SIOCIWLASTPRIV  0x8BFF
332 /* Previously, we were using SIOCDEVPRIVATE, but we now have our
333  * separate range because of collisions with other tools such as
334  * 'mii-tool'.
335  * We now have 32 commands, so a bit more space ;-).
336  * Also, all 'even' commands are only usable by root and don't return the
337  * content of ifr/iwr to user (but you are not obliged to use the set/get
338  * convention, just use every other two command). More details in iwpriv.c.
339  * And I repeat : you are not forced to use them with iwpriv, but you
340  * must be compliant with it.
341  */
342 
343 /* ------------------------- IOCTL STUFF ------------------------- */
344 
345 /* The first and the last (range) */
346 #define SIOCIWFIRST     0x8B00
347 #define SIOCIWLAST      SIOCIWLASTPRIV          /* 0x8BFF */
348 #define IW_IOCTL_IDX(cmd)       ((cmd) - SIOCIWFIRST)
349 #define IW_HANDLER(id, func)                    \
350         [IW_IOCTL_IDX(id)] = func
351 
352 /* Odd : get (world access), even : set (root access) */
353 #define IW_IS_SET(cmd)  (!((cmd) & 0x1))
354 #define IW_IS_GET(cmd)  ((cmd) & 0x1)
355 
356 /* ----------------------- WIRELESS EVENTS ----------------------- */
357 /* Those are *NOT* ioctls, do not issue request on them !!! */
358 /* Most events use the same identifier as ioctl requests */
359 
360 #define IWEVTXDROP      0x8C00          /* Packet dropped to excessive retry */
361 #define IWEVQUAL        0x8C01          /* Quality part of statistics (scan) */
362 #define IWEVCUSTOM      0x8C02          /* Driver specific ascii string */
363 #define IWEVREGISTERED  0x8C03          /* Discovered a new node (AP mode) */
364 #define IWEVEXPIRED     0x8C04          /* Expired a node (AP mode) */
365 #define IWEVGENIE       0x8C05          /* Generic IE (WPA, RSN, WMM, ..)
366                                          * (scan results); This includes id and
367                                          * length fields. One IWEVGENIE may
368                                          * contain more than one IE. Scan
369                                          * results may contain one or more
370                                          * IWEVGENIE events. */
371 #define IWEVMICHAELMICFAILURE 0x8C06    /* Michael MIC failure
372                                          * (struct iw_michaelmicfailure)
373                                          */
374 #define IWEVASSOCREQIE  0x8C07          /* IEs used in (Re)Association Request.
375                                          * The data includes id and length
376                                          * fields and may contain more than one
377                                          * IE. This event is required in
378                                          * Managed mode if the driver
379                                          * generates its own WPA/RSN IE. This
380                                          * should be sent just before
381                                          * IWEVREGISTERED event for the
382                                          * association. */
383 #define IWEVASSOCRESPIE 0x8C08          /* IEs used in (Re)Association
384                                          * Response. The data includes id and
385                                          * length fields and may contain more
386                                          * than one IE. This may be sent
387                                          * between IWEVASSOCREQIE and
388                                          * IWEVREGISTERED events for the
389                                          * association. */
390 #define IWEVPMKIDCAND   0x8C09          /* PMKID candidate for RSN
391                                          * pre-authentication
392                                          * (struct iw_pmkid_cand) */
393 
394 #define IWEVFIRST       0x8C00
395 #define IW_EVENT_IDX(cmd)       ((cmd) - IWEVFIRST)
396 
397 /* ------------------------- PRIVATE INFO ------------------------- */
398 /*
399  * The following is used with SIOCGIWPRIV. It allow a driver to define
400  * the interface (name, type of data) for its private ioctl.
401  * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV
402  */
403 
404 #define IW_PRIV_TYPE_MASK       0x7000  /* Type of arguments */
405 #define IW_PRIV_TYPE_NONE       0x0000
406 #define IW_PRIV_TYPE_BYTE       0x1000  /* Char as number */
407 #define IW_PRIV_TYPE_CHAR       0x2000  /* Char as character */
408 #define IW_PRIV_TYPE_INT        0x4000  /* 32 bits int */
409 #define IW_PRIV_TYPE_FLOAT      0x5000  /* struct iw_freq */
410 #define IW_PRIV_TYPE_ADDR       0x6000  /* struct sockaddr */
411 
412 #define IW_PRIV_SIZE_FIXED      0x0800  /* Variable or fixed number of args */
413 
414 #define IW_PRIV_SIZE_MASK       0x07FF  /* Max number of those args */
415 
416 /*
417  * Note : if the number of args is fixed and the size < 16 octets,
418  * instead of passing a pointer we will put args in the iwreq struct...
419  */
420 
421 /* ----------------------- OTHER CONSTANTS ----------------------- */
422 
423 /* Maximum frequencies in the range struct */
424 #define IW_MAX_FREQUENCIES      32
425 /* Note : if you have something like 80 frequencies,
426  * don't increase this constant and don't fill the frequency list.
427  * The user will be able to set by channel anyway... */
428 
429 /* Maximum bit rates in the range struct */
430 #define IW_MAX_BITRATES         32
431 
432 /* Maximum tx powers in the range struct */
433 #define IW_MAX_TXPOWER          8
434 /* Note : if you more than 8 TXPowers, just set the max and min or
435  * a few of them in the struct iw_range. */
436 
437 /* Maximum of address that you may set with SPY */
438 #define IW_MAX_SPY              8
439 
440 /* Maximum of address that you may get in the
441    list of access points in range */
442 #define IW_MAX_AP               64
443 
444 /* Maximum size of the ESSID and NICKN strings */
445 #define IW_ESSID_MAX_SIZE       32
446 
447 /* Modes of operation */
448 #define IW_MODE_AUTO    0       /* Let the driver decides */
449 #define IW_MODE_ADHOC   1       /* Single cell network */
450 #define IW_MODE_INFRA   2       /* Multi cell network, roaming, ... */
451 #define IW_MODE_MASTER  3       /* Synchronisation master or Access Point */
452 #define IW_MODE_REPEAT  4       /* Wireless Repeater (forwarder) */
453 #define IW_MODE_SECOND  5       /* Secondary master/repeater (backup) */
454 #define IW_MODE_MONITOR 6       /* Passive monitor (listen only) */
455 #define IW_MODE_MESH    7       /* Mesh (IEEE 802.11s) network */
456 
457 /* Statistics flags (bitmask in updated) */
458 #define IW_QUAL_QUAL_UPDATED    0x01    /* Value was updated since last read */
459 #define IW_QUAL_LEVEL_UPDATED   0x02
460 #define IW_QUAL_NOISE_UPDATED   0x04
461 #define IW_QUAL_ALL_UPDATED     0x07
462 #define IW_QUAL_DBM             0x08    /* Level + Noise are dBm */
463 #define IW_QUAL_QUAL_INVALID    0x10    /* Driver doesn't provide value */
464 #define IW_QUAL_LEVEL_INVALID   0x20
465 #define IW_QUAL_NOISE_INVALID   0x40
466 #define IW_QUAL_RCPI            0x80    /* Level + Noise are 802.11k RCPI */
467 #define IW_QUAL_ALL_INVALID     0x70
468 
469 /* Frequency flags */
470 #define IW_FREQ_AUTO            0x00    /* Let the driver decides */
471 #define IW_FREQ_FIXED           0x01    /* Force a specific value */
472 
473 /* Maximum number of size of encoding token available
474  * they are listed in the range structure */
475 #define IW_MAX_ENCODING_SIZES   8
476 
477 /* Maximum size of the encoding token in bytes */
478 #define IW_ENCODING_TOKEN_MAX   64      /* 512 bits (for now) */
479 
480 /* Flags for encoding (along with the token) */
481 #define IW_ENCODE_INDEX         0x00FF  /* Token index (if needed) */
482 #define IW_ENCODE_FLAGS         0xFF00  /* Flags defined below */
483 #define IW_ENCODE_MODE          0xF000  /* Modes defined below */
484 #define IW_ENCODE_DISABLED      0x8000  /* Encoding disabled */
485 #define IW_ENCODE_ENABLED       0x0000  /* Encoding enabled */
486 #define IW_ENCODE_RESTRICTED    0x4000  /* Refuse non-encoded packets */
487 #define IW_ENCODE_OPEN          0x2000  /* Accept non-encoded packets */
488 #define IW_ENCODE_NOKEY         0x0800  /* Key is write only, so not present */
489 #define IW_ENCODE_TEMP          0x0400  /* Temporary key */
490 
491 /* Power management flags available (along with the value, if any) */
492 #define IW_POWER_ON             0x0000  /* No details... */
493 #define IW_POWER_TYPE           0xF000  /* Type of parameter */
494 #define IW_POWER_PERIOD         0x1000  /* Value is a period/duration of  */
495 #define IW_POWER_TIMEOUT        0x2000  /* Value is a timeout (to go asleep) */
496 #define IW_POWER_MODE           0x0F00  /* Power Management mode */
497 #define IW_POWER_UNICAST_R      0x0100  /* Receive only unicast messages */
498 #define IW_POWER_MULTICAST_R    0x0200  /* Receive only multicast messages */
499 #define IW_POWER_ALL_R          0x0300  /* Receive all messages though PM */
500 #define IW_POWER_FORCE_S        0x0400  /* Force PM procedure for sending unicast */
501 #define IW_POWER_REPEATER       0x0800  /* Repeat broadcast messages in PM period */
502 #define IW_POWER_MODIFIER       0x000F  /* Modify a parameter */
503 #define IW_POWER_MIN            0x0001  /* Value is a minimum  */
504 #define IW_POWER_MAX            0x0002  /* Value is a maximum */
505 #define IW_POWER_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
506 
507 /* Transmit Power flags available */
508 #define IW_TXPOW_TYPE           0x00FF  /* Type of value */
509 #define IW_TXPOW_DBM            0x0000  /* Value is in dBm */
510 #define IW_TXPOW_MWATT          0x0001  /* Value is in mW */
511 #define IW_TXPOW_RELATIVE       0x0002  /* Value is in arbitrary units */
512 #define IW_TXPOW_RANGE          0x1000  /* Range of value between min/max */
513 
514 /* Retry limits and lifetime flags available */
515 #define IW_RETRY_ON             0x0000  /* No details... */
516 #define IW_RETRY_TYPE           0xF000  /* Type of parameter */
517 #define IW_RETRY_LIMIT          0x1000  /* Maximum number of retries*/
518 #define IW_RETRY_LIFETIME       0x2000  /* Maximum duration of retries in us */
519 #define IW_RETRY_MODIFIER       0x00FF  /* Modify a parameter */
520 #define IW_RETRY_MIN            0x0001  /* Value is a minimum  */
521 #define IW_RETRY_MAX            0x0002  /* Value is a maximum */
522 #define IW_RETRY_RELATIVE       0x0004  /* Value is not in seconds/ms/us */
523 #define IW_RETRY_SHORT          0x0010  /* Value is for short packets  */
524 #define IW_RETRY_LONG           0x0020  /* Value is for long packets */
525 
526 /* Scanning request flags */
527 #define IW_SCAN_DEFAULT         0x0000  /* Default scan of the driver */
528 #define IW_SCAN_ALL_ESSID       0x0001  /* Scan all ESSIDs */
529 #define IW_SCAN_THIS_ESSID      0x0002  /* Scan only this ESSID */
530 #define IW_SCAN_ALL_FREQ        0x0004  /* Scan all Frequencies */
531 #define IW_SCAN_THIS_FREQ       0x0008  /* Scan only this Frequency */
532 #define IW_SCAN_ALL_MODE        0x0010  /* Scan all Modes */
533 #define IW_SCAN_THIS_MODE       0x0020  /* Scan only this Mode */
534 #define IW_SCAN_ALL_RATE        0x0040  /* Scan all Bit-Rates */
535 #define IW_SCAN_THIS_RATE       0x0080  /* Scan only this Bit-Rate */
536 /* struct iw_scan_req scan_type */
537 #define IW_SCAN_TYPE_ACTIVE 0
538 #define IW_SCAN_TYPE_PASSIVE 1
539 /* Maximum size of returned data */
540 #define IW_SCAN_MAX_DATA        4096    /* In bytes */
541 
542 /* Scan capability flags - in (struct iw_range *)->scan_capa */
543 #define IW_SCAN_CAPA_NONE               0x00
544 #define IW_SCAN_CAPA_ESSID              0x01
545 #define IW_SCAN_CAPA_BSSID              0x02
546 #define IW_SCAN_CAPA_CHANNEL    0x04
547 #define IW_SCAN_CAPA_MODE               0x08
548 #define IW_SCAN_CAPA_RATE               0x10
549 #define IW_SCAN_CAPA_TYPE               0x20
550 #define IW_SCAN_CAPA_TIME               0x40
551 
552 /* Max number of char in custom event - use multiple of them if needed */
553 #define IW_CUSTOM_MAX           256     /* In bytes */
554 
555 /* Generic information element */
556 #define IW_GENERIC_IE_MAX       1024
557 
558 /* MLME requests (SIOCSIWMLME / struct iw_mlme) */
559 #define IW_MLME_DEAUTH          0
560 #define IW_MLME_DISASSOC        1
561 #define IW_MLME_AUTH            2
562 #define IW_MLME_ASSOC           3
563 
564 /* SIOCSIWAUTH/SIOCGIWAUTH struct iw_param flags */
565 #define IW_AUTH_INDEX           0x0FFF
566 #define IW_AUTH_FLAGS           0xF000
567 /* SIOCSIWAUTH/SIOCGIWAUTH parameters (0 .. 4095)
568  * (IW_AUTH_INDEX mask in struct iw_param flags; this is the index of the
569  * parameter that is being set/get to; value will be read/written to
570  * struct iw_param value field) */
571 #define IW_AUTH_WPA_VERSION             0
572 #define IW_AUTH_CIPHER_PAIRWISE         1
573 #define IW_AUTH_CIPHER_GROUP            2
574 #define IW_AUTH_KEY_MGMT                3
575 #define IW_AUTH_TKIP_COUNTERMEASURES    4
576 #define IW_AUTH_DROP_UNENCRYPTED        5
577 #define IW_AUTH_80211_AUTH_ALG          6
578 #define IW_AUTH_WPA_ENABLED             7
579 #define IW_AUTH_RX_UNENCRYPTED_EAPOL    8
580 #define IW_AUTH_ROAMING_CONTROL         9
581 #define IW_AUTH_PRIVACY_INVOKED         10
582 #define IW_AUTH_CIPHER_GROUP_MGMT       11
583 #define IW_AUTH_MFP                     12
584 
585 /* IW_AUTH_WPA_VERSION values (bit field) */
586 #define IW_AUTH_WPA_VERSION_DISABLED    0x00000001
587 #define IW_AUTH_WPA_VERSION_WPA         0x00000002
588 #define IW_AUTH_WPA_VERSION_WPA2        0x00000004
589 
590 /* IW_AUTH_PAIRWISE_CIPHER, IW_AUTH_GROUP_CIPHER, and IW_AUTH_CIPHER_GROUP_MGMT
591  * values (bit field) */
592 #define IW_AUTH_CIPHER_NONE     0x00000001
593 #define IW_AUTH_CIPHER_WEP40    0x00000002
594 #define IW_AUTH_CIPHER_TKIP     0x00000004
595 #define IW_AUTH_CIPHER_CCMP     0x00000008
596 #define IW_AUTH_CIPHER_WEP104   0x00000010
597 #define IW_AUTH_CIPHER_AES_CMAC 0x00000020
598 
599 /* IW_AUTH_KEY_MGMT values (bit field) */
600 #define IW_AUTH_KEY_MGMT_802_1X 1
601 #define IW_AUTH_KEY_MGMT_PSK    2
602 
603 /* IW_AUTH_80211_AUTH_ALG values (bit field) */
604 #define IW_AUTH_ALG_OPEN_SYSTEM 0x00000001
605 #define IW_AUTH_ALG_SHARED_KEY  0x00000002
606 #define IW_AUTH_ALG_LEAP        0x00000004
607 
608 /* IW_AUTH_ROAMING_CONTROL values */
609 #define IW_AUTH_ROAMING_ENABLE  0       /* driver/firmware based roaming */
610 #define IW_AUTH_ROAMING_DISABLE 1       /* user space program used for roaming
611                                          * control */
612 
613 /* IW_AUTH_MFP (management frame protection) values */
614 #define IW_AUTH_MFP_DISABLED    0       /* MFP disabled */
615 #define IW_AUTH_MFP_OPTIONAL    1       /* MFP optional */
616 #define IW_AUTH_MFP_REQUIRED    2       /* MFP required */
617 
618 /* SIOCSIWENCODEEXT definitions */
619 #define IW_ENCODE_SEQ_MAX_SIZE  8
620 /* struct iw_encode_ext ->alg */
621 #define IW_ENCODE_ALG_NONE      0
622 #define IW_ENCODE_ALG_WEP       1
623 #define IW_ENCODE_ALG_TKIP      2
624 #define IW_ENCODE_ALG_CCMP      3
625 #define IW_ENCODE_ALG_PMK       4
626 #define IW_ENCODE_ALG_AES_CMAC  5
627 /* struct iw_encode_ext ->ext_flags */
628 #define IW_ENCODE_EXT_TX_SEQ_VALID      0x00000001
629 #define IW_ENCODE_EXT_RX_SEQ_VALID      0x00000002
630 #define IW_ENCODE_EXT_GROUP_KEY         0x00000004
631 #define IW_ENCODE_EXT_SET_TX_KEY        0x00000008
632 
633 /* IWEVMICHAELMICFAILURE : struct iw_michaelmicfailure ->flags */
634 #define IW_MICFAILURE_KEY_ID    0x00000003 /* Key ID 0..3 */
635 #define IW_MICFAILURE_GROUP     0x00000004
636 #define IW_MICFAILURE_PAIRWISE  0x00000008
637 #define IW_MICFAILURE_STAKEY    0x00000010
638 #define IW_MICFAILURE_COUNT     0x00000060 /* 1 or 2 (0 = count not supported)
639                                             */
640 
641 /* Bit field values for enc_capa in struct iw_range */
642 #define IW_ENC_CAPA_WPA         0x00000001
643 #define IW_ENC_CAPA_WPA2        0x00000002
644 #define IW_ENC_CAPA_CIPHER_TKIP 0x00000004
645 #define IW_ENC_CAPA_CIPHER_CCMP 0x00000008
646 #define IW_ENC_CAPA_4WAY_HANDSHAKE      0x00000010
647 
648 /* Event capability macros - in (struct iw_range *)->event_capa
649  * Because we have more than 32 possible events, we use an array of
650  * 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */
651 #define IW_EVENT_CAPA_BASE(cmd)         ((cmd >= SIOCIWFIRSTPRIV) ? \
652                                          (cmd - SIOCIWFIRSTPRIV + 0x60) : \
653                                          (cmd - SIOCIWFIRST))
654 #define IW_EVENT_CAPA_INDEX(cmd)        (IW_EVENT_CAPA_BASE(cmd) >> 5)
655 #define IW_EVENT_CAPA_MASK(cmd)         (1 << (IW_EVENT_CAPA_BASE(cmd) & 0x1F))
656 /* Event capability constants - event autogenerated by the kernel
657  * This list is valid for most 802.11 devices, customise as needed... */
658 #define IW_EVENT_CAPA_K_0       (IW_EVENT_CAPA_MASK(0x8B04) | \
659                                  IW_EVENT_CAPA_MASK(0x8B06) | \
660                                  IW_EVENT_CAPA_MASK(0x8B1A))
661 #define IW_EVENT_CAPA_K_1       (IW_EVENT_CAPA_MASK(0x8B2A))
662 /* "Easy" macro to set events in iw_range (less efficient) */
663 #define IW_EVENT_CAPA_SET(event_capa, cmd) (event_capa[IW_EVENT_CAPA_INDEX(cmd)] |= IW_EVENT_CAPA_MASK(cmd))
664 #define IW_EVENT_CAPA_SET_KERNEL(event_capa) {event_capa[0] |= IW_EVENT_CAPA_K_0; event_capa[1] |= IW_EVENT_CAPA_K_1; }
665 
666 
667 /****************************** TYPES ******************************/
668 
669 /* --------------------------- SUBTYPES --------------------------- */
670 /*
671  *      Generic format for most parameters that fit in an int
672  */
673 struct  iw_param
674 {
675   __s32         value;          /* The value of the parameter itself */
676   __u8          fixed;          /* Hardware should not use auto select */
677   __u8          disabled;       /* Disable the feature */
678   __u16         flags;          /* Various specifc flags (if any) */
679 };
680 
681 /*
682  *      For all data larger than 16 octets, we need to use a
683  *      pointer to memory allocated in user space.
684  */
685 struct  iw_point
686 {
687   void __user   *pointer;       /* Pointer to the data  (in user space) */
688   __u16         length;         /* number of fields or size in bytes */
689   __u16         flags;          /* Optional params */
690 };
691 
692 #ifdef __KERNEL__
693 #ifdef CONFIG_COMPAT
694 
695 #include <linux/compat.h>
696 
697 struct compat_iw_point {
698         compat_caddr_t pointer;
699         __u16 length;
700         __u16 flags;
701 };
702 #endif
703 #endif
704 
705 /*
706  *      A frequency
707  *      For numbers lower than 10^9, we encode the number in 'm' and
708  *      set 'e' to 0
709  *      For number greater than 10^9, we divide it by the lowest power
710  *      of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
711  *      The power of 10 is in 'e', the result of the division is in 'm'.
712  */
713 struct  iw_freq
714 {
715         __s32           m;              /* Mantissa */
716         __s16           e;              /* Exponent */
717         __u8            i;              /* List index (when in range struct) */
718         __u8            flags;          /* Flags (fixed/auto) */
719 };
720 
721 /*
722  *      Quality of the link
723  */
724 struct  iw_quality
725 {
726         __u8            qual;           /* link quality (%retries, SNR,
727                                            %missed beacons or better...) */
728         __u8            level;          /* signal level (dBm) */
729         __u8            noise;          /* noise level (dBm) */
730         __u8            updated;        /* Flags to know if updated */
731 };
732 
733 /*
734  *      Packet discarded in the wireless adapter due to
735  *      "wireless" specific problems...
736  *      Note : the list of counter and statistics in net_device_stats
737  *      is already pretty exhaustive, and you should use that first.
738  *      This is only additional stats...
739  */
740 struct  iw_discarded
741 {
742         __u32           nwid;           /* Rx : Wrong nwid/essid */
743         __u32           code;           /* Rx : Unable to code/decode (WEP) */
744         __u32           fragment;       /* Rx : Can't perform MAC reassembly */
745         __u32           retries;        /* Tx : Max MAC retries num reached */
746         __u32           misc;           /* Others cases */
747 };
748 
749 /*
750  *      Packet/Time period missed in the wireless adapter due to
751  *      "wireless" specific problems...
752  */
753 struct  iw_missed
754 {
755         __u32           beacon;         /* Missed beacons/superframe */
756 };
757 
758 /*
759  *      Quality range (for spy threshold)
760  */
761 struct  iw_thrspy
762 {
763         struct sockaddr         addr;           /* Source address (hw/mac) */
764         struct iw_quality       qual;           /* Quality of the link */
765         struct iw_quality       low;            /* Low threshold */
766         struct iw_quality       high;           /* High threshold */
767 };
768 
769 /*
770  *      Optional data for scan request
771  *
772  *      Note: these optional parameters are controlling parameters for the
773  *      scanning behavior, these do not apply to getting scan results
774  *      (SIOCGIWSCAN). Drivers are expected to keep a local BSS table and
775  *      provide a merged results with all BSSes even if the previous scan
776  *      request limited scanning to a subset, e.g., by specifying an SSID.
777  *      Especially, scan results are required to include an entry for the
778  *      current BSS if the driver is in Managed mode and associated with an AP.
779  */
780 struct  iw_scan_req
781 {
782         __u8            scan_type; /* IW_SCAN_TYPE_{ACTIVE,PASSIVE} */
783         __u8            essid_len;
784         __u8            num_channels; /* num entries in channel_list;
785                                        * 0 = scan all allowed channels */
786         __u8            flags; /* reserved as padding; use zero, this may
787                                 * be used in the future for adding flags
788                                 * to request different scan behavior */
789         struct sockaddr bssid; /* ff:ff:ff:ff:ff:ff for broadcast BSSID or
790                                 * individual address of a specific BSS */
791 
792         /*
793          * Use this ESSID if IW_SCAN_THIS_ESSID flag is used instead of using
794          * the current ESSID. This allows scan requests for specific ESSID
795          * without having to change the current ESSID and potentially breaking
796          * the current association.
797          */
798         __u8            essid[IW_ESSID_MAX_SIZE];
799 
800         /*
801          * Optional parameters for changing the default scanning behavior.
802          * These are based on the MLME-SCAN.request from IEEE Std 802.11.
803          * TU is 1.024 ms. If these are set to 0, driver is expected to use
804          * reasonable default values. min_channel_time defines the time that
805          * will be used to wait for the first reply on each channel. If no
806          * replies are received, next channel will be scanned after this. If
807          * replies are received, total time waited on the channel is defined by
808          * max_channel_time.
809          */
810         __u32           min_channel_time; /* in TU */
811         __u32           max_channel_time; /* in TU */
812 
813         struct iw_freq  channel_list[IW_MAX_FREQUENCIES];
814 };
815 
816 /* ------------------------- WPA SUPPORT ------------------------- */
817 
818 /*
819  *      Extended data structure for get/set encoding (this is used with
820  *      SIOCSIWENCODEEXT/SIOCGIWENCODEEXT. struct iw_point and IW_ENCODE_*
821  *      flags are used in the same way as with SIOCSIWENCODE/SIOCGIWENCODE and
822  *      only the data contents changes (key data -> this structure, including
823  *      key data).
824  *
825  *      If the new key is the first group key, it will be set as the default
826  *      TX key. Otherwise, default TX key index is only changed if
827  *      IW_ENCODE_EXT_SET_TX_KEY flag is set.
828  *
829  *      Key will be changed with SIOCSIWENCODEEXT in all cases except for
830  *      special "change TX key index" operation which is indicated by setting
831  *      key_len = 0 and ext_flags |= IW_ENCODE_EXT_SET_TX_KEY.
832  *
833  *      tx_seq/rx_seq are only used when respective
834  *      IW_ENCODE_EXT_{TX,RX}_SEQ_VALID flag is set in ext_flags. Normal
835  *      TKIP/CCMP operation is to set RX seq with SIOCSIWENCODEEXT and start
836  *      TX seq from zero whenever key is changed. SIOCGIWENCODEEXT is normally
837  *      used only by an Authenticator (AP or an IBSS station) to get the
838  *      current TX sequence number. Using TX_SEQ_VALID for SIOCSIWENCODEEXT and
839  *      RX_SEQ_VALID for SIOCGIWENCODEEXT are optional, but can be useful for
840  *      debugging/testing.
841  */
842 struct  iw_encode_ext
843 {
844         __u32           ext_flags; /* IW_ENCODE_EXT_* */
845         __u8            tx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
846         __u8            rx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
847         struct sockaddr addr; /* ff:ff:ff:ff:ff:ff for broadcast/multicast
848                                * (group) keys or unicast address for
849                                * individual keys */
850         __u16           alg; /* IW_ENCODE_ALG_* */
851         __u16           key_len;
852         __u8            key[0];
853 };
854 
855 /* SIOCSIWMLME data */
856 struct  iw_mlme
857 {
858         __u16           cmd; /* IW_MLME_* */
859         __u16           reason_code;
860         struct sockaddr addr;
861 };
862 
863 /* SIOCSIWPMKSA data */
864 #define IW_PMKSA_ADD            1
865 #define IW_PMKSA_REMOVE         2
866 #define IW_PMKSA_FLUSH          3
867 
868 #define IW_PMKID_LEN    16
869 
870 struct  iw_pmksa
871 {
872         __u32           cmd; /* IW_PMKSA_* */
873         struct sockaddr bssid;
874         __u8            pmkid[IW_PMKID_LEN];
875 };
876 
877 /* IWEVMICHAELMICFAILURE data */
878 struct  iw_michaelmicfailure
879 {
880         __u32           flags;
881         struct sockaddr src_addr;
882         __u8            tsc[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
883 };
884 
885 /* IWEVPMKIDCAND data */
886 #define IW_PMKID_CAND_PREAUTH   0x00000001 /* RNS pre-authentication enabled */
887 struct  iw_pmkid_cand
888 {
889         __u32           flags; /* IW_PMKID_CAND_* */
890         __u32           index; /* the smaller the index, the higher the
891                                 * priority */
892         struct sockaddr bssid;
893 };
894 
895 /* ------------------------ WIRELESS STATS ------------------------ */
896 /*
897  * Wireless statistics (used for /proc/net/wireless)
898  */
899 struct  iw_statistics
900 {
901         __u16           status;         /* Status
902                                          * - device dependent for now */
903 
904         struct iw_quality       qual;           /* Quality of the link
905                                                  * (instant/mean/max) */
906         struct iw_discarded     discard;        /* Packet discarded counts */
907         struct iw_missed        miss;           /* Packet missed counts */
908 };
909 
910 /* ------------------------ IOCTL REQUEST ------------------------ */
911 /*
912  * This structure defines the payload of an ioctl, and is used 
913  * below.
914  *
915  * Note that this structure should fit on the memory footprint
916  * of iwreq (which is the same as ifreq), which mean a max size of
917  * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
918  * You should check this when increasing the structures defined
919  * above in this file...
920  */
921 union   iwreq_data
922 {
923         /* Config - generic */
924         char            name[IFNAMSIZ];
925         /* Name : used to verify the presence of  wireless extensions.
926          * Name of the protocol/provider... */
927 
928         struct iw_point essid;          /* Extended network name */
929         struct iw_param nwid;           /* network id (or domain - the cell) */
930         struct iw_freq  freq;           /* frequency or channel :
931                                          * 0-1000 = channel
932                                          * > 1000 = frequency in Hz */
933 
934         struct iw_param sens;           /* signal level threshold */
935         struct iw_param bitrate;        /* default bit rate */
936         struct iw_param txpower;        /* default transmit power */
937         struct iw_param rts;            /* RTS threshold threshold */
938         struct iw_param frag;           /* Fragmentation threshold */
939         __u32           mode;           /* Operation mode */
940         struct iw_param retry;          /* Retry limits & lifetime */
941 
942         struct iw_point encoding;       /* Encoding stuff : tokens */
943         struct iw_param power;          /* PM duration/timeout */
944         struct iw_quality qual;         /* Quality part of statistics */
945 
946         struct sockaddr ap_addr;        /* Access point address */
947         struct sockaddr addr;           /* Destination address (hw/mac) */
948 
949         struct iw_param param;          /* Other small parameters */
950         struct iw_point data;           /* Other large parameters */
951 };
952 
953 /*
954  * The structure to exchange data for ioctl.
955  * This structure is the same as 'struct ifreq', but (re)defined for
956  * convenience...
957  * Do I need to remind you about structure size (32 octets) ?
958  */
959 struct  iwreq 
960 {
961         union
962         {
963                 char    ifrn_name[IFNAMSIZ];    /* if name, e.g. "eth0" */
964         } ifr_ifrn;
965 
966         /* Data part (defined just above) */
967         union   iwreq_data      u;
968 };
969 
970 /* -------------------------- IOCTL DATA -------------------------- */
971 /*
972  *      For those ioctl which want to exchange mode data that what could
973  *      fit in the above structure...
974  */
975 
976 /*
977  *      Range of parameters
978  */
979 
980 struct  iw_range
981 {
982         /* Informative stuff (to choose between different interface) */
983         __u32           throughput;     /* To give an idea... */
984         /* In theory this value should be the maximum benchmarked
985          * TCP/IP throughput, because with most of these devices the
986          * bit rate is meaningless (overhead an co) to estimate how
987          * fast the connection will go and pick the fastest one.
988          * I suggest people to play with Netperf or any benchmark...
989          */
990 
991         /* NWID (or domain id) */
992         __u32           min_nwid;       /* Minimal NWID we are able to set */
993         __u32           max_nwid;       /* Maximal NWID we are able to set */
994 
995         /* Old Frequency (backward compat - moved lower ) */
996         __u16           old_num_channels;
997         __u8            old_num_frequency;
998 
999         /* Scan capabilities */
1000         __u8            scan_capa;      /* IW_SCAN_CAPA_* bit field */
1001 
1002         /* Wireless event capability bitmasks */
1003         __u32           event_capa[6];
1004 
1005         /* signal level threshold range */
1006         __s32           sensitivity;
1007 
1008         /* Quality of link & SNR stuff */
1009         /* Quality range (link, level, noise)
1010          * If the quality is absolute, it will be in the range [0 ; max_qual],
1011          * if the quality is dBm, it will be in the range [max_qual ; 0].
1012          * Don't forget that we use 8 bit arithmetics... */
1013         struct iw_quality       max_qual;       /* Quality of the link */
1014         /* This should contain the average/typical values of the quality
1015          * indicator. This should be the threshold between a "good" and
1016          * a "bad" link (example : monitor going from green to orange).
1017          * Currently, user space apps like quality monitors don't have any
1018          * way to calibrate the measurement. With this, they can split
1019          * the range between 0 and max_qual in different quality level
1020          * (using a geometric subdivision centered on the average).
1021          * I expect that people doing the user space apps will feedback
1022          * us on which value we need to put in each driver... */
1023         struct iw_quality       avg_qual;       /* Quality of the link */
1024 
1025         /* Rates */
1026         __u8            num_bitrates;   /* Number of entries in the list */
1027         __s32           bitrate[IW_MAX_BITRATES];       /* list, in bps */
1028 
1029         /* RTS threshold */
1030         __s32           min_rts;        /* Minimal RTS threshold */
1031         __s32           max_rts;        /* Maximal RTS threshold */
1032 
1033         /* Frag threshold */
1034         __s32           min_frag;       /* Minimal frag threshold */
1035         __s32           max_frag;       /* Maximal frag threshold */
1036 
1037         /* Power Management duration & timeout */
1038         __s32           min_pmp;        /* Minimal PM period */
1039         __s32           max_pmp;        /* Maximal PM period */
1040         __s32           min_pmt;        /* Minimal PM timeout */
1041         __s32           max_pmt;        /* Maximal PM timeout */
1042         __u16           pmp_flags;      /* How to decode max/min PM period */
1043         __u16           pmt_flags;      /* How to decode max/min PM timeout */
1044         __u16           pm_capa;        /* What PM options are supported */
1045 
1046         /* Encoder stuff */
1047         __u16   encoding_size[IW_MAX_ENCODING_SIZES];   /* Different token sizes */
1048         __u8    num_encoding_sizes;     /* Number of entry in the list */
1049         __u8    max_encoding_tokens;    /* Max number of tokens */
1050         /* For drivers that need a "login/passwd" form */
1051         __u8    encoding_login_index;   /* token index for login token */
1052 
1053         /* Transmit power */
1054         __u16           txpower_capa;   /* What options are supported */
1055         __u8            num_txpower;    /* Number of entries in the list */
1056         __s32           txpower[IW_MAX_TXPOWER];        /* list, in bps */
1057 
1058         /* Wireless Extension version info */
1059         __u8            we_version_compiled;    /* Must be WIRELESS_EXT */
1060         __u8            we_version_source;      /* Last update of source */
1061 
1062         /* Retry limits and lifetime */
1063         __u16           retry_capa;     /* What retry options are supported */
1064         __u16           retry_flags;    /* How to decode max/min retry limit */
1065         __u16           r_time_flags;   /* How to decode max/min retry life */
1066         __s32           min_retry;      /* Minimal number of retries */
1067         __s32           max_retry;      /* Maximal number of retries */
1068         __s32           min_r_time;     /* Minimal retry lifetime */
1069         __s32           max_r_time;     /* Maximal retry lifetime */
1070 
1071         /* Frequency */
1072         __u16           num_channels;   /* Number of channels [0; num - 1] */
1073         __u8            num_frequency;  /* Number of entry in the list */
1074         struct iw_freq  freq[IW_MAX_FREQUENCIES];       /* list */
1075         /* Note : this frequency list doesn't need to fit channel numbers,
1076          * because each entry contain its channel index */
1077 
1078         __u32           enc_capa;       /* IW_ENC_CAPA_* bit field */
1079 };
1080 
1081 /*
1082  * Private ioctl interface information
1083  */
1084  
1085 struct  iw_priv_args
1086 {
1087         __u32           cmd;            /* Number of the ioctl to issue */
1088         __u16           set_args;       /* Type and number of args */
1089         __u16           get_args;       /* Type and number of args */
1090         char            name[IFNAMSIZ]; /* Name of the extension */
1091 };
1092 
1093 /* ----------------------- WIRELESS EVENTS ----------------------- */
1094 /*
1095  * Wireless events are carried through the rtnetlink socket to user
1096  * space. They are encapsulated in the IFLA_WIRELESS field of
1097  * a RTM_NEWLINK message.
1098  */
1099 
1100 /*
1101  * A Wireless Event. Contains basically the same data as the ioctl...
1102  */
1103 struct iw_event
1104 {
1105         __u16           len;                    /* Real length of this stuff */
1106         __u16           cmd;                    /* Wireless IOCTL */
1107         union iwreq_data        u;              /* IOCTL fixed payload */
1108 };
1109 
1110 /* Size of the Event prefix (including padding and alignement junk) */
1111 #define IW_EV_LCP_LEN   (sizeof(struct iw_event) - sizeof(union iwreq_data))
1112 /* Size of the various events */
1113 #define IW_EV_CHAR_LEN  (IW_EV_LCP_LEN + IFNAMSIZ)
1114 #define IW_EV_UINT_LEN  (IW_EV_LCP_LEN + sizeof(__u32))
1115 #define IW_EV_FREQ_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_freq))
1116 #define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param))
1117 #define IW_EV_ADDR_LEN  (IW_EV_LCP_LEN + sizeof(struct sockaddr))
1118 #define IW_EV_QUAL_LEN  (IW_EV_LCP_LEN + sizeof(struct iw_quality))
1119 
1120 /* iw_point events are special. First, the payload (extra data) come at
1121  * the end of the event, so they are bigger than IW_EV_POINT_LEN. Second,
1122  * we omit the pointer, so start at an offset. */
1123 #define IW_EV_POINT_OFF (((char *) &(((struct iw_point *) NULL)->length)) - \
1124                           (char *) NULL)
1125 #define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point) - \
1126                          IW_EV_POINT_OFF)
1127 
1128 #ifdef __KERNEL__
1129 #ifdef CONFIG_COMPAT
1130 struct __compat_iw_event {
1131         __u16           len;                    /* Real length of this stuff */
1132         __u16           cmd;                    /* Wireless IOCTL */
1133         compat_caddr_t  pointer;
1134 };
1135 #define IW_EV_COMPAT_LCP_LEN offsetof(struct __compat_iw_event, pointer)
1136 #define IW_EV_COMPAT_POINT_OFF offsetof(struct compat_iw_point, length)
1137 
1138 /* Size of the various events for compat */
1139 #define IW_EV_COMPAT_CHAR_LEN   (IW_EV_COMPAT_LCP_LEN + IFNAMSIZ)
1140 #define IW_EV_COMPAT_UINT_LEN   (IW_EV_COMPAT_LCP_LEN + sizeof(__u32))
1141 #define IW_EV_COMPAT_FREQ_LEN   (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_freq))
1142 #define IW_EV_COMPAT_PARAM_LEN  (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_param))
1143 #define IW_EV_COMPAT_ADDR_LEN   (IW_EV_COMPAT_LCP_LEN + sizeof(struct sockaddr))
1144 #define IW_EV_COMPAT_QUAL_LEN   (IW_EV_COMPAT_LCP_LEN + sizeof(struct iw_quality))
1145 #define IW_EV_COMPAT_POINT_LEN  \
1146         (IW_EV_COMPAT_LCP_LEN + sizeof(struct compat_iw_point) - \
1147          IW_EV_COMPAT_POINT_OFF)
1148 #endif
1149 #endif
1150 
1151 /* Size of the Event prefix when packed in stream */
1152 #define IW_EV_LCP_PK_LEN        (4)
1153 /* Size of the various events when packed in stream */
1154 #define IW_EV_CHAR_PK_LEN       (IW_EV_LCP_PK_LEN + IFNAMSIZ)
1155 #define IW_EV_UINT_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(__u32))
1156 #define IW_EV_FREQ_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_freq))
1157 #define IW_EV_PARAM_PK_LEN      (IW_EV_LCP_PK_LEN + sizeof(struct iw_param))
1158 #define IW_EV_ADDR_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct sockaddr))
1159 #define IW_EV_QUAL_PK_LEN       (IW_EV_LCP_PK_LEN + sizeof(struct iw_quality))
1160 #define IW_EV_POINT_PK_LEN      (IW_EV_LCP_LEN + 4)
1161 
1162 #endif  /* _LINUX_WIRELESS_H */
1163 

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