wireless-15.h 25 KB

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  1. /*
  2. * This file define a set of standard wireless extensions
  3. *
  4. * Version : 15 12.7.02
  5. *
  6. * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
  7. * Copyright (c) 1997-2002 Jean Tourrilhes, All Rights Reserved.
  8. */
  9. #ifndef _LINUX_WIRELESS_H
  10. #define _LINUX_WIRELESS_H
  11. /************************** DOCUMENTATION **************************/
  12. /*
  13. * Initial APIs (1996 -> onward) :
  14. * -----------------------------
  15. * Basically, the wireless extensions are for now a set of standard ioctl
  16. * call + /proc/net/wireless
  17. *
  18. * The entry /proc/net/wireless give statistics and information on the
  19. * driver.
  20. * This is better than having each driver having its entry because
  21. * its centralised and we may remove the driver module safely.
  22. *
  23. * Ioctl are used to configure the driver and issue commands. This is
  24. * better than command line options of insmod because we may want to
  25. * change dynamically (while the driver is running) some parameters.
  26. *
  27. * The ioctl mechanimsm are copied from standard devices ioctl.
  28. * We have the list of command plus a structure descibing the
  29. * data exchanged...
  30. * Note that to add these ioctl, I was obliged to modify :
  31. * # net/core/dev.c (two place + add include)
  32. * # net/ipv4/af_inet.c (one place + add include)
  33. *
  34. * /proc/net/wireless is a copy of /proc/net/dev.
  35. * We have a structure for data passed from the driver to /proc/net/wireless
  36. * Too add this, I've modified :
  37. * # net/core/dev.c (two other places)
  38. * # include/linux/netdevice.h (one place)
  39. * # include/linux/proc_fs.h (one place)
  40. *
  41. * New driver API (2002 -> onward) :
  42. * -------------------------------
  43. * This file is only concerned with the user space API and common definitions.
  44. * The new driver API is defined and documented in :
  45. * # include/net/iw_handler.h
  46. *
  47. * Note as well that /proc/net/wireless implementation has now moved in :
  48. * # include/linux/wireless.c
  49. *
  50. * Wireless Events (2002 -> onward) :
  51. * --------------------------------
  52. * Events are defined at the end of this file, and implemented in :
  53. * # include/linux/wireless.c
  54. *
  55. * Other comments :
  56. * --------------
  57. * Do not add here things that are redundant with other mechanisms
  58. * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
  59. * wireless specific.
  60. *
  61. * These wireless extensions are not magic : each driver has to provide
  62. * support for them...
  63. *
  64. * IMPORTANT NOTE : As everything in the kernel, this is very much a
  65. * work in progress. Contact me if you have ideas of improvements...
  66. */
  67. /***************************** INCLUDES *****************************/
  68. #include <linux/types.h> /* for "caddr_t" et al */
  69. #include <linux/socket.h> /* for "struct sockaddr" et al */
  70. #include <linux/if.h> /* for IFNAMSIZ and co... */
  71. /***************************** VERSION *****************************/
  72. /*
  73. * This constant is used to know the availability of the wireless
  74. * extensions and to know which version of wireless extensions it is
  75. * (there is some stuff that will be added in the future...)
  76. * I just plan to increment with each new version.
  77. */
  78. #define WIRELESS_EXT 15
  79. /*
  80. * Changes :
  81. *
  82. * V2 to V3
  83. * --------
  84. * Alan Cox start some incompatibles changes. I've integrated a bit more.
  85. * - Encryption renamed to Encode to avoid US regulation problems
  86. * - Frequency changed from float to struct to avoid problems on old 386
  87. *
  88. * V3 to V4
  89. * --------
  90. * - Add sensitivity
  91. *
  92. * V4 to V5
  93. * --------
  94. * - Missing encoding definitions in range
  95. * - Access points stuff
  96. *
  97. * V5 to V6
  98. * --------
  99. * - 802.11 support (ESSID ioctls)
  100. *
  101. * V6 to V7
  102. * --------
  103. * - define IW_ESSID_MAX_SIZE and IW_MAX_AP
  104. *
  105. * V7 to V8
  106. * --------
  107. * - Changed my e-mail address
  108. * - More 802.11 support (nickname, rate, rts, frag)
  109. * - List index in frequencies
  110. *
  111. * V8 to V9
  112. * --------
  113. * - Support for 'mode of operation' (ad-hoc, managed...)
  114. * - Support for unicast and multicast power saving
  115. * - Change encoding to support larger tokens (>64 bits)
  116. * - Updated iw_params (disable, flags) and use it for NWID
  117. * - Extracted iw_point from iwreq for clarity
  118. *
  119. * V9 to V10
  120. * ---------
  121. * - Add PM capability to range structure
  122. * - Add PM modifier : MAX/MIN/RELATIVE
  123. * - Add encoding option : IW_ENCODE_NOKEY
  124. * - Add TxPower ioctls (work like TxRate)
  125. *
  126. * V10 to V11
  127. * ----------
  128. * - Add WE version in range (help backward/forward compatibility)
  129. * - Add retry ioctls (work like PM)
  130. *
  131. * V11 to V12
  132. * ----------
  133. * - Add SIOCSIWSTATS to get /proc/net/wireless programatically
  134. * - Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space
  135. * - Add new statistics (frag, retry, beacon)
  136. * - Add average quality (for user space calibration)
  137. *
  138. * V12 to V13
  139. * ----------
  140. * - Document creation of new driver API.
  141. * - Extract union iwreq_data from struct iwreq (for new driver API).
  142. * - Rename SIOCSIWNAME as SIOCSIWCOMMIT
  143. *
  144. * V13 to V14
  145. * ----------
  146. * - Wireless Events support : define struct iw_event
  147. * - Define additional specific event numbers
  148. * - Add "addr" and "param" fields in union iwreq_data
  149. * - AP scanning stuff (SIOCSIWSCAN and friends)
  150. *
  151. * V14 to V15
  152. * ----------
  153. * - Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg
  154. * - Make struct iw_freq signed (both m & e), add explicit padding
  155. * - Add IWEVCUSTOM for driver specific event/scanning token
  156. * - Add IW_MAX_GET_SPY for driver returning a lot of addresses
  157. * - Add IW_TXPOW_RANGE for range of Tx Powers
  158. * - Add IWEVREGISTERED & IWEVEXPIRED events for Access Points
  159. * - Add IW_MODE_MONITOR for passive monitor
  160. */
  161. /**************************** CONSTANTS ****************************/
  162. /* -------------------------- IOCTL LIST -------------------------- */
  163. /* Basic operations */
  164. #define SIOCSIWCOMMIT 0x8B00 /* Commit pending changes to driver */
  165. #define SIOCGIWNAME 0x8B01 /* get name == wireless protocol */
  166. #define SIOCSIWNWID 0x8B02 /* set network id (the cell) */
  167. #define SIOCGIWNWID 0x8B03 /* get network id */
  168. #define SIOCSIWFREQ 0x8B04 /* set channel/frequency (Hz) */
  169. #define SIOCGIWFREQ 0x8B05 /* get channel/frequency (Hz) */
  170. #define SIOCSIWMODE 0x8B06 /* set operation mode */
  171. #define SIOCGIWMODE 0x8B07 /* get operation mode */
  172. #define SIOCSIWSENS 0x8B08 /* set sensitivity (dBm) */
  173. #define SIOCGIWSENS 0x8B09 /* get sensitivity (dBm) */
  174. /* Informative stuff */
  175. #define SIOCSIWRANGE 0x8B0A /* Unused */
  176. #define SIOCGIWRANGE 0x8B0B /* Get range of parameters */
  177. #define SIOCSIWPRIV 0x8B0C /* Unused */
  178. #define SIOCGIWPRIV 0x8B0D /* get private ioctl interface info */
  179. #define SIOCSIWSTATS 0x8B0E /* Unused */
  180. #define SIOCGIWSTATS 0x8B0F /* Get /proc/net/wireless stats */
  181. /* Mobile IP support */
  182. #define SIOCSIWSPY 0x8B10 /* set spy addresses */
  183. #define SIOCGIWSPY 0x8B11 /* get spy info (quality of link) */
  184. /* Access Point manipulation */
  185. #define SIOCSIWAP 0x8B14 /* set access point MAC addresses */
  186. #define SIOCGIWAP 0x8B15 /* get access point MAC addresses */
  187. #define SIOCGIWAPLIST 0x8B17 /* get list of access point in range */
  188. #define SIOCSIWSCAN 0x8B18 /* trigger scanning */
  189. #define SIOCGIWSCAN 0x8B19 /* get scanning results */
  190. /* 802.11 specific support */
  191. #define SIOCSIWESSID 0x8B1A /* set ESSID (network name) */
  192. #define SIOCGIWESSID 0x8B1B /* get ESSID */
  193. #define SIOCSIWNICKN 0x8B1C /* set node name/nickname */
  194. #define SIOCGIWNICKN 0x8B1D /* get node name/nickname */
  195. /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
  196. * within the 'iwreq' structure, so we need to use the 'data' member to
  197. * point to a string in user space, like it is done for RANGE...
  198. * The "flags" member indicate if the ESSID is active or not (promiscuous).
  199. */
  200. /* Other parameters useful in 802.11 and some other devices */
  201. #define SIOCSIWRATE 0x8B20 /* set default bit rate (bps) */
  202. #define SIOCGIWRATE 0x8B21 /* get default bit rate (bps) */
  203. #define SIOCSIWRTS 0x8B22 /* set RTS/CTS threshold (bytes) */
  204. #define SIOCGIWRTS 0x8B23 /* get RTS/CTS threshold (bytes) */
  205. #define SIOCSIWFRAG 0x8B24 /* set fragmentation thr (bytes) */
  206. #define SIOCGIWFRAG 0x8B25 /* get fragmentation thr (bytes) */
  207. #define SIOCSIWTXPOW 0x8B26 /* set transmit power (dBm) */
  208. #define SIOCGIWTXPOW 0x8B27 /* get transmit power (dBm) */
  209. #define SIOCSIWRETRY 0x8B28 /* set retry limits and lifetime */
  210. #define SIOCGIWRETRY 0x8B29 /* get retry limits and lifetime */
  211. /* Encoding stuff (scrambling, hardware security, WEP...) */
  212. #define SIOCSIWENCODE 0x8B2A /* set encoding token & mode */
  213. #define SIOCGIWENCODE 0x8B2B /* get encoding token & mode */
  214. /* Power saving stuff (power management, unicast and multicast) */
  215. #define SIOCSIWPOWER 0x8B2C /* set Power Management settings */
  216. #define SIOCGIWPOWER 0x8B2D /* get Power Management settings */
  217. /* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
  218. /* These 16 ioctl are wireless device private.
  219. * Each driver is free to use them for whatever purpose it chooses,
  220. * however the driver *must* export the description of those ioctls
  221. * with SIOCGIWPRIV and *must* use arguments as defined below.
  222. * If you don't follow those rules, DaveM is going to hate you (reason :
  223. * it make mixed 32/64bit operation impossible).
  224. */
  225. #define SIOCIWFIRSTPRIV 0x8BE0
  226. #define SIOCIWLASTPRIV 0x8BFF
  227. /* Previously, we were using SIOCDEVPRIVATE, but we now have our
  228. * separate range because of collisions with other tools such as
  229. * 'mii-tool'.
  230. * We now have 32 commands, so a bit more space ;-).
  231. * Also, all 'odd' commands are only usable by root and don't return the
  232. * content of ifr/iwr to user (but you are not obliged to use the set/get
  233. * convention, just use every other two command).
  234. * And I repeat : you are not obliged to use them with iwspy, but you
  235. * must be compliant with it.
  236. */
  237. /* ------------------------- IOCTL STUFF ------------------------- */
  238. /* The first and the last (range) */
  239. #define SIOCIWFIRST 0x8B00
  240. #define SIOCIWLAST SIOCIWLASTPRIV /* 0x8BFF */
  241. /* Even : get (world access), odd : set (root access) */
  242. #define IW_IS_SET(cmd) (!((cmd) & 0x1))
  243. #define IW_IS_GET(cmd) ((cmd) & 0x1)
  244. /* ----------------------- WIRELESS EVENTS ----------------------- */
  245. /* Those are *NOT* ioctls, do not issue request on them !!! */
  246. /* Most events use the same identifier as ioctl requests */
  247. #define IWEVTXDROP 0x8C00 /* Packet dropped to excessive retry */
  248. #define IWEVQUAL 0x8C01 /* Quality part of statistics (scan) */
  249. #define IWEVCUSTOM 0x8C02 /* Driver specific ascii string */
  250. #define IWEVREGISTERED 0x8C03 /* Discovered a new node (AP mode) */
  251. #define IWEVEXPIRED 0x8C04 /* Expired a node (AP mode) */
  252. #define IWEVFIRST 0x8C00
  253. /* ------------------------- PRIVATE INFO ------------------------- */
  254. /*
  255. * The following is used with SIOCGIWPRIV. It allow a driver to define
  256. * the interface (name, type of data) for its private ioctl.
  257. * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV
  258. */
  259. #define IW_PRIV_TYPE_MASK 0x7000 /* Type of arguments */
  260. #define IW_PRIV_TYPE_NONE 0x0000
  261. #define IW_PRIV_TYPE_BYTE 0x1000 /* Char as number */
  262. #define IW_PRIV_TYPE_CHAR 0x2000 /* Char as character */
  263. #define IW_PRIV_TYPE_INT 0x4000 /* 32 bits int */
  264. #define IW_PRIV_TYPE_FLOAT 0x5000 /* struct iw_freq */
  265. #define IW_PRIV_TYPE_ADDR 0x6000 /* struct sockaddr */
  266. #define IW_PRIV_SIZE_FIXED 0x0800 /* Variable or fixed nuber of args */
  267. #define IW_PRIV_SIZE_MASK 0x07FF /* Max number of those args */
  268. /*
  269. * Note : if the number of args is fixed and the size < 16 octets,
  270. * instead of passing a pointer we will put args in the iwreq struct...
  271. */
  272. /* ----------------------- OTHER CONSTANTS ----------------------- */
  273. /* Maximum frequencies in the range struct */
  274. #define IW_MAX_FREQUENCIES 16
  275. /* Note : if you have something like 80 frequencies,
  276. * don't increase this constant and don't fill the frequency list.
  277. * The user will be able to set by channel anyway... */
  278. /* Maximum bit rates in the range struct */
  279. #define IW_MAX_BITRATES 8
  280. /* Maximum tx powers in the range struct */
  281. #define IW_MAX_TXPOWER 8
  282. /* Note : if you more than 8 TXPowers, just set the max and min or
  283. * a few of them in the struct iw_range. */
  284. /* Maximum of address that you may set with SPY */
  285. #define IW_MAX_SPY 8 /* set */
  286. #define IW_MAX_GET_SPY 64 /* get */
  287. /* Maximum of address that you may get in the
  288. list of access points in range */
  289. #define IW_MAX_AP 8
  290. /* Maximum size of the ESSID and NICKN strings */
  291. #define IW_ESSID_MAX_SIZE 32
  292. /* Modes of operation */
  293. #define IW_MODE_AUTO 0 /* Let the driver decides */
  294. #define IW_MODE_ADHOC 1 /* Single cell network */
  295. #define IW_MODE_INFRA 2 /* Multi cell network, roaming, ... */
  296. #define IW_MODE_MASTER 3 /* Synchronisation master or Access Point */
  297. #define IW_MODE_REPEAT 4 /* Wireless Repeater (forwarder) */
  298. #define IW_MODE_SECOND 5 /* Secondary master/repeater (backup) */
  299. #define IW_MODE_MONITOR 6 /* Passive monitor (listen only) */
  300. /* Maximum number of size of encoding token available
  301. * they are listed in the range structure */
  302. #define IW_MAX_ENCODING_SIZES 8
  303. /* Maximum size of the encoding token in bytes */
  304. #define IW_ENCODING_TOKEN_MAX 32 /* 256 bits (for now) */
  305. /* Flags for encoding (along with the token) */
  306. #define IW_ENCODE_INDEX 0x00FF /* Token index (if needed) */
  307. #define IW_ENCODE_FLAGS 0xFF00 /* Flags defined below */
  308. #define IW_ENCODE_MODE 0xF000 /* Modes defined below */
  309. #define IW_ENCODE_DISABLED 0x8000 /* Encoding disabled */
  310. #define IW_ENCODE_ENABLED 0x0000 /* Encoding enabled */
  311. #define IW_ENCODE_RESTRICTED 0x4000 /* Refuse non-encoded packets */
  312. #define IW_ENCODE_OPEN 0x2000 /* Accept non-encoded packets */
  313. #define IW_ENCODE_NOKEY 0x0800 /* Key is write only, so not present */
  314. /* Power management flags available (along with the value, if any) */
  315. #define IW_POWER_ON 0x0000 /* No details... */
  316. #define IW_POWER_TYPE 0xF000 /* Type of parameter */
  317. #define IW_POWER_PERIOD 0x1000 /* Value is a period/duration of */
  318. #define IW_POWER_TIMEOUT 0x2000 /* Value is a timeout (to go asleep) */
  319. #define IW_POWER_MODE 0x0F00 /* Power Management mode */
  320. #define IW_POWER_UNICAST_R 0x0100 /* Receive only unicast messages */
  321. #define IW_POWER_MULTICAST_R 0x0200 /* Receive only multicast messages */
  322. #define IW_POWER_ALL_R 0x0300 /* Receive all messages though PM */
  323. #define IW_POWER_FORCE_S 0x0400 /* Force PM procedure for sending unicast */
  324. #define IW_POWER_REPEATER 0x0800 /* Repeat broadcast messages in PM period */
  325. #define IW_POWER_MODIFIER 0x000F /* Modify a parameter */
  326. #define IW_POWER_MIN 0x0001 /* Value is a minimum */
  327. #define IW_POWER_MAX 0x0002 /* Value is a maximum */
  328. #define IW_POWER_RELATIVE 0x0004 /* Value is not in seconds/ms/us */
  329. /* Transmit Power flags available */
  330. #define IW_TXPOW_TYPE 0x00FF /* Type of value */
  331. #define IW_TXPOW_DBM 0x0000 /* Value is in dBm */
  332. #define IW_TXPOW_MWATT 0x0001 /* Value is in mW */
  333. #define IW_TXPOW_RANGE 0x1000 /* Range of value between min/max */
  334. /* Retry limits and lifetime flags available */
  335. #define IW_RETRY_ON 0x0000 /* No details... */
  336. #define IW_RETRY_TYPE 0xF000 /* Type of parameter */
  337. #define IW_RETRY_LIMIT 0x1000 /* Maximum number of retries*/
  338. #define IW_RETRY_LIFETIME 0x2000 /* Maximum duration of retries in us */
  339. #define IW_RETRY_MODIFIER 0x000F /* Modify a parameter */
  340. #define IW_RETRY_MIN 0x0001 /* Value is a minimum */
  341. #define IW_RETRY_MAX 0x0002 /* Value is a maximum */
  342. #define IW_RETRY_RELATIVE 0x0004 /* Value is not in seconds/ms/us */
  343. /* Scanning request flags */
  344. #define IW_SCAN_DEFAULT 0x0000 /* Default scan of the driver */
  345. #define IW_SCAN_ALL_ESSID 0x0001 /* Scan all ESSIDs */
  346. #define IW_SCAN_THIS_ESSID 0x0002 /* Scan only this ESSID */
  347. #define IW_SCAN_ALL_FREQ 0x0004 /* Scan all Frequencies */
  348. #define IW_SCAN_THIS_FREQ 0x0008 /* Scan only this Frequency */
  349. #define IW_SCAN_ALL_MODE 0x0010 /* Scan all Modes */
  350. #define IW_SCAN_THIS_MODE 0x0020 /* Scan only this Mode */
  351. #define IW_SCAN_ALL_RATE 0x0040 /* Scan all Bit-Rates */
  352. #define IW_SCAN_THIS_RATE 0x0080 /* Scan only this Bit-Rate */
  353. /* Maximum size of returned data */
  354. #define IW_SCAN_MAX_DATA 4096 /* In bytes */
  355. /* Max number of char in custom event - use multiple of them if needed */
  356. #define IW_CUSTOM_MAX 256 /* In bytes */
  357. /****************************** TYPES ******************************/
  358. /* --------------------------- SUBTYPES --------------------------- */
  359. /*
  360. * Generic format for most parameters that fit in an int
  361. */
  362. struct iw_param
  363. {
  364. __s32 value; /* The value of the parameter itself */
  365. __u8 fixed; /* Hardware should not use auto select */
  366. __u8 disabled; /* Disable the feature */
  367. __u16 flags; /* Various specifc flags (if any) */
  368. };
  369. /*
  370. * For all data larger than 16 octets, we need to use a
  371. * pointer to memory allocated in user space.
  372. */
  373. struct iw_point
  374. {
  375. caddr_t pointer; /* Pointer to the data (in user space) */
  376. __u16 length; /* number of fields or size in bytes */
  377. __u16 flags; /* Optional params */
  378. };
  379. /*
  380. * A frequency
  381. * For numbers lower than 10^9, we encode the number in 'm' and
  382. * set 'e' to 0
  383. * For number greater than 10^9, we divide it by the lowest power
  384. * of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
  385. * The power of 10 is in 'e', the result of the division is in 'm'.
  386. */
  387. struct iw_freq
  388. {
  389. __s32 m; /* Mantissa */
  390. __s16 e; /* Exponent */
  391. __u8 i; /* List index (when in range struct) */
  392. __u8 pad; /* Unused - just for alignement */
  393. };
  394. /*
  395. * Quality of the link
  396. */
  397. struct iw_quality
  398. {
  399. __u8 qual; /* link quality (%retries, SNR,
  400. %missed beacons or better...) */
  401. __u8 level; /* signal level (dBm) */
  402. __u8 noise; /* noise level (dBm) */
  403. __u8 updated; /* Flags to know if updated */
  404. };
  405. /*
  406. * Packet discarded in the wireless adapter due to
  407. * "wireless" specific problems...
  408. * Note : the list of counter and statistics in net_device_stats
  409. * is already pretty exhaustive, and you should use that first.
  410. * This is only additional stats...
  411. */
  412. struct iw_discarded
  413. {
  414. __u32 nwid; /* Rx : Wrong nwid/essid */
  415. __u32 code; /* Rx : Unable to code/decode (WEP) */
  416. __u32 fragment; /* Rx : Can't perform MAC reassembly */
  417. __u32 retries; /* Tx : Max MAC retries num reached */
  418. __u32 misc; /* Others cases */
  419. };
  420. /*
  421. * Packet/Time period missed in the wireless adapter due to
  422. * "wireless" specific problems...
  423. */
  424. struct iw_missed
  425. {
  426. __u32 beacon; /* Missed beacons/superframe */
  427. };
  428. /* ------------------------ WIRELESS STATS ------------------------ */
  429. /*
  430. * Wireless statistics (used for /proc/net/wireless)
  431. */
  432. struct iw_statistics
  433. {
  434. __u16 status; /* Status
  435. * - device dependent for now */
  436. struct iw_quality qual; /* Quality of the link
  437. * (instant/mean/max) */
  438. struct iw_discarded discard; /* Packet discarded counts */
  439. struct iw_missed miss; /* Packet missed counts */
  440. };
  441. /* ------------------------ IOCTL REQUEST ------------------------ */
  442. /*
  443. * This structure defines the payload of an ioctl, and is used
  444. * below.
  445. *
  446. * Note that this structure should fit on the memory footprint
  447. * of iwreq (which is the same as ifreq), which mean a max size of
  448. * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
  449. * You should check this when increasing the structures defined
  450. * above in this file...
  451. */
  452. union iwreq_data
  453. {
  454. /* Config - generic */
  455. char name[IFNAMSIZ];
  456. /* Name : used to verify the presence of wireless extensions.
  457. * Name of the protocol/provider... */
  458. struct iw_point essid; /* Extended network name */
  459. struct iw_param nwid; /* network id (or domain - the cell) */
  460. struct iw_freq freq; /* frequency or channel :
  461. * 0-1000 = channel
  462. * > 1000 = frequency in Hz */
  463. struct iw_param sens; /* signal level threshold */
  464. struct iw_param bitrate; /* default bit rate */
  465. struct iw_param txpower; /* default transmit power */
  466. struct iw_param rts; /* RTS threshold threshold */
  467. struct iw_param frag; /* Fragmentation threshold */
  468. __u32 mode; /* Operation mode */
  469. struct iw_param retry; /* Retry limits & lifetime */
  470. struct iw_point encoding; /* Encoding stuff : tokens */
  471. struct iw_param power; /* PM duration/timeout */
  472. struct iw_quality qual; /* Quality part of statistics */
  473. struct sockaddr ap_addr; /* Access point address */
  474. struct sockaddr addr; /* Destination address (hw) */
  475. struct iw_param param; /* Other small parameters */
  476. struct iw_point data; /* Other large parameters */
  477. };
  478. /*
  479. * The structure to exchange data for ioctl.
  480. * This structure is the same as 'struct ifreq', but (re)defined for
  481. * convenience...
  482. * Do I need to remind you about structure size (32 octets) ?
  483. */
  484. struct iwreq
  485. {
  486. union
  487. {
  488. char ifrn_name[IFNAMSIZ]; /* if name, e.g. "eth0" */
  489. } ifr_ifrn;
  490. /* Data part (defined just above) */
  491. union iwreq_data u;
  492. };
  493. /* -------------------------- IOCTL DATA -------------------------- */
  494. /*
  495. * For those ioctl which want to exchange mode data that what could
  496. * fit in the above structure...
  497. */
  498. /*
  499. * Range of parameters
  500. */
  501. struct iw_range
  502. {
  503. /* Informative stuff (to choose between different interface) */
  504. __u32 throughput; /* To give an idea... */
  505. /* In theory this value should be the maximum benchmarked
  506. * TCP/IP throughput, because with most of these devices the
  507. * bit rate is meaningless (overhead an co) to estimate how
  508. * fast the connection will go and pick the fastest one.
  509. * I suggest people to play with Netperf or any benchmark...
  510. */
  511. /* NWID (or domain id) */
  512. __u32 min_nwid; /* Minimal NWID we are able to set */
  513. __u32 max_nwid; /* Maximal NWID we are able to set */
  514. /* Frequency */
  515. __u16 num_channels; /* Number of channels [0; num - 1] */
  516. __u8 num_frequency; /* Number of entry in the list */
  517. struct iw_freq freq[IW_MAX_FREQUENCIES]; /* list */
  518. /* Note : this frequency list doesn't need to fit channel numbers */
  519. /* signal level threshold range */
  520. __s32 sensitivity;
  521. /* Quality of link & SNR stuff */
  522. struct iw_quality max_qual; /* Quality of the link */
  523. /* Rates */
  524. __u8 num_bitrates; /* Number of entries in the list */
  525. __s32 bitrate[IW_MAX_BITRATES]; /* list, in bps */
  526. /* RTS threshold */
  527. __s32 min_rts; /* Minimal RTS threshold */
  528. __s32 max_rts; /* Maximal RTS threshold */
  529. /* Frag threshold */
  530. __s32 min_frag; /* Minimal frag threshold */
  531. __s32 max_frag; /* Maximal frag threshold */
  532. /* Power Management duration & timeout */
  533. __s32 min_pmp; /* Minimal PM period */
  534. __s32 max_pmp; /* Maximal PM period */
  535. __s32 min_pmt; /* Minimal PM timeout */
  536. __s32 max_pmt; /* Maximal PM timeout */
  537. __u16 pmp_flags; /* How to decode max/min PM period */
  538. __u16 pmt_flags; /* How to decode max/min PM timeout */
  539. __u16 pm_capa; /* What PM options are supported */
  540. /* Encoder stuff */
  541. __u16 encoding_size[IW_MAX_ENCODING_SIZES]; /* Different token sizes */
  542. __u8 num_encoding_sizes; /* Number of entry in the list */
  543. __u8 max_encoding_tokens; /* Max number of tokens */
  544. /* Transmit power */
  545. __u16 txpower_capa; /* What options are supported */
  546. __u8 num_txpower; /* Number of entries in the list */
  547. __s32 txpower[IW_MAX_TXPOWER]; /* list, in bps */
  548. /* Wireless Extension version info */
  549. __u8 we_version_compiled; /* Must be WIRELESS_EXT */
  550. __u8 we_version_source; /* Last update of source */
  551. /* Retry limits and lifetime */
  552. __u16 retry_capa; /* What retry options are supported */
  553. __u16 retry_flags; /* How to decode max/min retry limit */
  554. __u16 r_time_flags; /* How to decode max/min retry life */
  555. __s32 min_retry; /* Minimal number of retries */
  556. __s32 max_retry; /* Maximal number of retries */
  557. __s32 min_r_time; /* Minimal retry lifetime */
  558. __s32 max_r_time; /* Maximal retry lifetime */
  559. /* Average quality of link & SNR */
  560. struct iw_quality avg_qual; /* Quality of the link */
  561. /* This should contain the average/typical values of the quality
  562. * indicator. This should be the threshold between a "good" and
  563. * a "bad" link (example : monitor going from green to orange).
  564. * Currently, user space apps like quality monitors don't have any
  565. * way to calibrate the measurement. With this, they can split
  566. * the range between 0 and max_qual in different quality level
  567. * (using a geometric subdivision centered on the average).
  568. * I expect that people doing the user space apps will feedback
  569. * us on which value we need to put in each driver...
  570. */
  571. };
  572. /*
  573. * Private ioctl interface information
  574. */
  575. struct iw_priv_args
  576. {
  577. __u32 cmd; /* Number of the ioctl to issue */
  578. __u16 set_args; /* Type and number of args */
  579. __u16 get_args; /* Type and number of args */
  580. char name[IFNAMSIZ]; /* Name of the extension */
  581. };
  582. /* ----------------------- WIRELESS EVENTS ----------------------- */
  583. /*
  584. * Wireless events are carried through the rtnetlink socket to user
  585. * space. They are encapsulated in the IFLA_WIRELESS field of
  586. * a RTM_NEWLINK message.
  587. */
  588. /*
  589. * A Wireless Event. Contains basically the same data as the ioctl...
  590. */
  591. struct iw_event
  592. {
  593. __u16 len; /* Real lenght of this stuff */
  594. __u16 cmd; /* Wireless IOCTL */
  595. union iwreq_data u; /* IOCTL fixed payload */
  596. };
  597. /* Size of the Event prefix (including padding and alignement junk) */
  598. #define IW_EV_LCP_LEN (sizeof(struct iw_event) - sizeof(union iwreq_data))
  599. /* Size of the various events */
  600. #define IW_EV_CHAR_LEN (IW_EV_LCP_LEN + IFNAMSIZ)
  601. #define IW_EV_UINT_LEN (IW_EV_LCP_LEN + sizeof(__u32))
  602. #define IW_EV_FREQ_LEN (IW_EV_LCP_LEN + sizeof(struct iw_freq))
  603. #define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point))
  604. #define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param))
  605. #define IW_EV_ADDR_LEN (IW_EV_LCP_LEN + sizeof(struct sockaddr))
  606. #define IW_EV_QUAL_LEN (IW_EV_LCP_LEN + sizeof(struct iw_quality))
  607. /* Note : in the case of iw_point, the extra data will come at the
  608. * end of the event */
  609. #endif /* _LINUX_WIRELESS_H */