wireless-10.h 16 KB

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  1. /*
  2. * This file define a set of standard wireless extensions
  3. *
  4. * Version : 9 16.10.99
  5. *
  6. * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
  7. */
  8. #ifndef _LINUX_WIRELESS_H
  9. #define _LINUX_WIRELESS_H
  10. /************************** DOCUMENTATION **************************/
  11. /*
  12. * Basically, the wireless extensions are for now a set of standard ioctl
  13. * call + /proc/net/wireless
  14. *
  15. * The entry /proc/net/wireless give statistics and information on the
  16. * driver.
  17. * This is better than having each driver having its entry because
  18. * its centralised and we may remove the driver module safely.
  19. *
  20. * Ioctl are used to configure the driver and issue commands. This is
  21. * better than command line options of insmod because we may want to
  22. * change dynamically (while the driver is running) some parameters.
  23. *
  24. * The ioctl mechanimsm are copied from standard devices ioctl.
  25. * We have the list of command plus a structure descibing the
  26. * data exchanged...
  27. * Note that to add these ioctl, I was obliged to modify :
  28. * net/core/dev.c (two place + add include)
  29. * net/ipv4/af_inet.c (one place + add include)
  30. *
  31. * /proc/net/wireless is a copy of /proc/net/dev.
  32. * We have a structure for data passed from the driver to /proc/net/wireless
  33. * Too add this, I've modified :
  34. * net/core/dev.c (two other places)
  35. * include/linux/netdevice.h (one place)
  36. * include/linux/proc_fs.h (one place)
  37. *
  38. * Do not add here things that are redundant with other mechanisms
  39. * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
  40. * wireless specific.
  41. *
  42. * These wireless extensions are not magic : each driver has to provide
  43. * support for them...
  44. *
  45. * IMPORTANT NOTE : As everything in the kernel, this is very much a
  46. * work in progress. Contact me if you have ideas of improvements...
  47. */
  48. /***************************** INCLUDES *****************************/
  49. #include <linux/types.h> /* for "caddr_t" et al */
  50. #include <linux/socket.h> /* for "struct sockaddr" et al */
  51. #include <linux/if.h> /* for IFNAMSIZ and co... */
  52. /**************************** CONSTANTS ****************************/
  53. /* --------------------------- VERSION --------------------------- */
  54. /*
  55. * This constant is used to know the availability of the wireless
  56. * extensions and to know which version of wireless extensions it is
  57. * (there is some stuff that will be added in the future...)
  58. * I just plan to increment with each new version.
  59. */
  60. #define WIRELESS_EXT 10
  61. /*
  62. * Changes :
  63. *
  64. * V2 to V3
  65. * --------
  66. * Alan Cox start some incompatibles changes. I've integrated a bit more.
  67. * - Encryption renamed to Encode to avoid US regulation problems
  68. * - Frequency changed from float to struct to avoid problems on old 386
  69. *
  70. * V3 to V4
  71. * --------
  72. * - Add sensitivity
  73. *
  74. * V4 to V5
  75. * --------
  76. * - Missing encoding definitions in range
  77. * - Access points stuff
  78. *
  79. * V5 to V6
  80. * --------
  81. * - 802.11 support (ESSID ioctls)
  82. *
  83. * V6 to V7
  84. * --------
  85. * - define IW_ESSID_MAX_SIZE and IW_MAX_AP
  86. *
  87. * V7 to V8
  88. * --------
  89. * - Changed my e-mail address
  90. * - More 802.11 support (nickname, rate, rts, frag)
  91. * - List index in frequencies
  92. *
  93. * V8 to V9
  94. * --------
  95. * - Support for 'mode of operation' (ad-hoc, managed...)
  96. * - Support for unicast and multicast power saving
  97. * - Change encoding to support larger tokens (>64 bits)
  98. * - Updated iw_params (disable, flags) and use it for NWID
  99. * - Extracted iw_point from iwreq for clarity
  100. *
  101. * V9 to V10
  102. * ---------
  103. * - Add PM capability to range structure
  104. * - Add PM modifier : MAX/MIN/RELATIVE
  105. * - Add encoding option : IW_ENCODE_NOKEY
  106. * - Add TxPower ioctls (work like TxRate)
  107. */
  108. /* -------------------------- IOCTL LIST -------------------------- */
  109. /* Basic operations */
  110. #define SIOCSIWNAME 0x8B00 /* Unused */
  111. #define SIOCGIWNAME 0x8B01 /* get name == wireless protocol */
  112. #define SIOCSIWNWID 0x8B02 /* set network id (the cell) */
  113. #define SIOCGIWNWID 0x8B03 /* get network id */
  114. #define SIOCSIWFREQ 0x8B04 /* set channel/frequency (Hz) */
  115. #define SIOCGIWFREQ 0x8B05 /* get channel/frequency (Hz) */
  116. #define SIOCSIWMODE 0x8B06 /* set operation mode */
  117. #define SIOCGIWMODE 0x8B07 /* get operation mode */
  118. #define SIOCSIWSENS 0x8B08 /* set sensitivity (dBm) */
  119. #define SIOCGIWSENS 0x8B09 /* get sensitivity (dBm) */
  120. /* Informative stuff */
  121. #define SIOCSIWRANGE 0x8B0A /* Unused */
  122. #define SIOCGIWRANGE 0x8B0B /* Get range of parameters */
  123. #define SIOCSIWPRIV 0x8B0C /* Unused */
  124. #define SIOCGIWPRIV 0x8B0D /* get private ioctl interface info */
  125. /* Mobile IP support */
  126. #define SIOCSIWSPY 0x8B10 /* set spy addresses */
  127. #define SIOCGIWSPY 0x8B11 /* get spy info (quality of link) */
  128. /* Access Point manipulation */
  129. #define SIOCSIWAP 0x8B14 /* set access point MAC addresses */
  130. #define SIOCGIWAP 0x8B15 /* get access point MAC addresses */
  131. #define SIOCGIWAPLIST 0x8B17 /* get list of access point in range */
  132. /* 802.11 specific support */
  133. #define SIOCSIWESSID 0x8B1A /* set ESSID (network name) */
  134. #define SIOCGIWESSID 0x8B1B /* get ESSID */
  135. #define SIOCSIWNICKN 0x8B1C /* set node name/nickname */
  136. #define SIOCGIWNICKN 0x8B1D /* get node name/nickname */
  137. /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
  138. * within the 'iwreq' structure, so we need to use the 'data' member to
  139. * point to a string in user space, like it is done for RANGE...
  140. * The "flags" member indicate if the ESSID is active or not (promiscuous).
  141. */
  142. /* Other parameters usefull in 802.11 and some other devices */
  143. #define SIOCSIWRATE 0x8B20 /* set default bit rate (bps) */
  144. #define SIOCGIWRATE 0x8B21 /* get default bit rate (bps) */
  145. #define SIOCSIWRTS 0x8B22 /* set RTS/CTS threshold (bytes) */
  146. #define SIOCGIWRTS 0x8B23 /* get RTS/CTS threshold (bytes) */
  147. #define SIOCSIWFRAG 0x8B24 /* set fragmentation thr (bytes) */
  148. #define SIOCGIWFRAG 0x8B25 /* get fragmentation thr (bytes) */
  149. #define SIOCSIWTXPOW 0x8B26 /* set transmit power (dBm) */
  150. #define SIOCGIWTXPOW 0x8B27 /* get transmit power (dBm) */
  151. /* Encoding stuff (scrambling, hardware security, WEP...) */
  152. #define SIOCSIWENCODE 0x8B2A /* set encoding token & mode */
  153. #define SIOCGIWENCODE 0x8B2B /* get encoding token & mode */
  154. /* Power saving stuff (power management, unicast and multicast) */
  155. #define SIOCSIWPOWER 0x8B2C /* set Power Management settings */
  156. #define SIOCGIWPOWER 0x8B2D /* get Power Management settings */
  157. /* ------------------------- IOCTL STUFF ------------------------- */
  158. /* The first and the last (range) */
  159. #define SIOCIWFIRST 0x8B00
  160. #define SIOCIWLAST 0x8B30
  161. /* Even : get (world access), odd : set (root access) */
  162. #define IW_IS_SET(cmd) (!((cmd) & 0x1))
  163. #define IW_IS_GET(cmd) ((cmd) & 0x1)
  164. /* ------------------------- PRIVATE INFO ------------------------- */
  165. /*
  166. * The following is used with SIOCGIWPRIV. It allow a driver to define
  167. * the interface (name, type of data) for its private ioctl.
  168. * Privates ioctl are SIOCDEVPRIVATE -> SIOCDEVPRIVATE + 0xF
  169. */
  170. #define IW_PRIV_TYPE_MASK 0x7000 /* Type of arguments */
  171. #define IW_PRIV_TYPE_NONE 0x0000
  172. #define IW_PRIV_TYPE_BYTE 0x1000 /* Char as number */
  173. #define IW_PRIV_TYPE_CHAR 0x2000 /* Char as character */
  174. #define IW_PRIV_TYPE_INT 0x4000 /* 32 bits int */
  175. #define IW_PRIV_TYPE_FLOAT 0x5000
  176. #define IW_PRIV_SIZE_FIXED 0x0800 /* Variable or fixed nuber of args */
  177. #define IW_PRIV_SIZE_MASK 0x07FF /* Max number of those args */
  178. /*
  179. * Note : if the number of args is fixed and the size < 16 octets,
  180. * instead of passing a pointer we will put args in the iwreq struct...
  181. */
  182. /* ----------------------- OTHER CONSTANTS ----------------------- */
  183. /* Maximum frequencies in the range struct */
  184. #define IW_MAX_FREQUENCIES 16
  185. /* Note : if you have something like 80 frequencies,
  186. * don't increase this constant and don't fill the frequency list.
  187. * The user will be able to set by channel anyway... */
  188. /* Maximum bit rates in the range struct */
  189. #define IW_MAX_BITRATES 8
  190. /* Maximum tx powers in the range struct */
  191. #define IW_MAX_TXPOWER 8
  192. /* Maximum of address that you may set with SPY */
  193. #define IW_MAX_SPY 8
  194. /* Maximum of address that you may get in the
  195. list of access points in range */
  196. #define IW_MAX_AP 8
  197. /* Maximum size of the ESSID and NICKN strings */
  198. #define IW_ESSID_MAX_SIZE 32
  199. /* Modes of operation */
  200. #define IW_MODE_AUTO 0 /* Let the driver decides */
  201. #define IW_MODE_ADHOC 1 /* Single cell network */
  202. #define IW_MODE_INFRA 2 /* Multi cell network, roaming, ... */
  203. #define IW_MODE_MASTER 3 /* Synchronisation master or Access Point */
  204. #define IW_MODE_REPEAT 4 /* Wireless Repeater (forwarder) */
  205. #define IW_MODE_SECOND 5 /* Secondary master/repeater (backup) */
  206. /* Maximum number of size of encoding token available
  207. * they are listed in the range structure */
  208. #define IW_MAX_ENCODING_SIZES 8
  209. /* Maximum size of the encoding token in bytes */
  210. #define IW_ENCODING_TOKEN_MAX 32 /* 256 bits (for now) */
  211. /* Flags for encoding (along with the token) */
  212. #define IW_ENCODE_INDEX 0x00FF /* Token index (if needed) */
  213. #define IW_ENCODE_FLAGS 0xFF00 /* Flags defined below */
  214. #define IW_ENCODE_MODE 0xF000 /* Modes defined below */
  215. #define IW_ENCODE_DISABLED 0x8000 /* Encoding disabled */
  216. #define IW_ENCODE_ENABLED 0x0000 /* Encoding enabled */
  217. #define IW_ENCODE_RESTRICTED 0x4000 /* Refuse non-encoded packets */
  218. #define IW_ENCODE_OPEN 0x2000 /* Accept non-encoded packets */
  219. #define IW_ENCODE_NOKEY 0x0800 /* Key is write only, so not present */
  220. /* Power management flags available (along with the value, if any) */
  221. #define IW_POWER_ON 0x0000 /* No details... */
  222. #define IW_POWER_TYPE 0xF000 /* Type of parameter */
  223. #define IW_POWER_PERIOD 0x1000 /* Value is a period/duration of */
  224. #define IW_POWER_TIMEOUT 0x2000 /* Value is a timeout (to go asleep) */
  225. #define IW_POWER_MODE 0x0F00 /* Power Management mode */
  226. #define IW_POWER_UNICAST_R 0x0100 /* Receive only unicast messages */
  227. #define IW_POWER_MULTICAST_R 0x0200 /* Receive only multicast messages */
  228. #define IW_POWER_ALL_R 0x0300 /* Receive all messages though PM */
  229. #define IW_POWER_FORCE_S 0x0400 /* Force PM procedure for sending unicast */
  230. #define IW_POWER_REPEATER 0x0800 /* Repeat broadcast messages in PM period */
  231. #define IW_POWER_MODIFIER 0x000F /* Modify a parameter */
  232. #define IW_POWER_MIN 0x0001 /* Value is a minimum */
  233. #define IW_POWER_MAX 0x0002 /* Value is a maximum */
  234. #define IW_POWER_RELATIVE 0x0004 /* Value is not in seconds/ms/us */
  235. /* Transmit Power flags available */
  236. #define IW_TXPOW_DBM 0x0000 /* Value is in dBm */
  237. #define IW_TXPOW_MWATT 0x0001 /* Value is in mW */
  238. /****************************** TYPES ******************************/
  239. /* --------------------------- SUBTYPES --------------------------- */
  240. /*
  241. * Generic format for most parameters that fit in an int
  242. */
  243. struct iw_param
  244. {
  245. __s32 value; /* The value of the parameter itself */
  246. __u8 fixed; /* Hardware should not use auto select */
  247. __u8 disabled; /* Disable the feature */
  248. __u16 flags; /* Various specifc flags (if any) */
  249. };
  250. /*
  251. * For all data larger than 16 octets, we need to use a
  252. * pointer to memory alocated in user space.
  253. */
  254. struct iw_point
  255. {
  256. caddr_t pointer; /* Pointer to the data (in user space) */
  257. __u16 length; /* number of fields or size in bytes */
  258. __u16 flags; /* Optional params */
  259. };
  260. /*
  261. * A frequency
  262. * For numbers lower than 10^9, we encode the number in 'm' and
  263. * set 'e' to 0
  264. * For number greater than 10^9, we divide it by the lowest power
  265. * of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
  266. * The power of 10 is in 'e', the result of the division is in 'm'.
  267. */
  268. struct iw_freq
  269. {
  270. __u32 m; /* Mantissa */
  271. __u16 e; /* Exponent */
  272. __u8 i; /* List index (when in range struct) */
  273. };
  274. /*
  275. * Quality of the link
  276. */
  277. struct iw_quality
  278. {
  279. __u8 qual; /* link quality (%retries, SNR or better...) */
  280. __u8 level; /* signal level */
  281. __u8 noise; /* noise level */
  282. __u8 updated; /* Flags to know if updated */
  283. };
  284. /*
  285. * Packet discarded in the wireless adapter due to
  286. * "wireless" specific problems...
  287. */
  288. struct iw_discarded
  289. {
  290. __u32 nwid; /* Wrong nwid */
  291. __u32 code; /* Unable to code/decode */
  292. __u32 misc; /* Others cases */
  293. };
  294. /* ------------------------ WIRELESS STATS ------------------------ */
  295. /*
  296. * Wireless statistics (used for /proc/net/wireless)
  297. */
  298. struct iw_statistics
  299. {
  300. __u16 status; /* Status
  301. * - device dependent for now */
  302. struct iw_quality qual; /* Quality of the link
  303. * (instant/mean/max) */
  304. struct iw_discarded discard; /* Packet discarded counts */
  305. };
  306. /* ------------------------ IOCTL REQUEST ------------------------ */
  307. /*
  308. * The structure to exchange data for ioctl.
  309. * This structure is the same as 'struct ifreq', but (re)defined for
  310. * convenience...
  311. *
  312. * Note that it should fit on the same memory footprint !
  313. * You should check this when increasing the above structures (16 octets)
  314. * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
  315. */
  316. struct iwreq
  317. {
  318. union
  319. {
  320. char ifrn_name[IFNAMSIZ]; /* if name, e.g. "eth0" */
  321. } ifr_ifrn;
  322. /* Data part */
  323. union
  324. {
  325. /* Config - generic */
  326. char name[IFNAMSIZ];
  327. /* Name : used to verify the presence of wireless extensions.
  328. * Name of the protocol/provider... */
  329. struct iw_point essid; /* Extended network name */
  330. struct iw_param nwid; /* network id (or domain - the cell) */
  331. struct iw_freq freq; /* frequency or channel :
  332. * 0-1000 = channel
  333. * > 1000 = frequency in Hz */
  334. struct iw_param sens; /* signal level threshold */
  335. struct iw_param bitrate; /* default bit rate */
  336. struct iw_param txpower; /* default transmit power */
  337. struct iw_param rts; /* RTS threshold threshold */
  338. struct iw_param frag; /* Fragmentation threshold */
  339. __u32 mode; /* Operation mode */
  340. struct iw_point encoding; /* Encoding stuff : tokens */
  341. struct iw_param power; /* PM duration/timeout */
  342. struct sockaddr ap_addr; /* Access point address */
  343. struct iw_point data; /* Other large parameters */
  344. } u;
  345. };
  346. /* -------------------------- IOCTL DATA -------------------------- */
  347. /*
  348. * For those ioctl which want to exchange mode data that what could
  349. * fit in the above structure...
  350. */
  351. /*
  352. * Range of parameters
  353. */
  354. struct iw_range
  355. {
  356. /* Informative stuff (to choose between different interface) */
  357. __u32 throughput; /* To give an idea... */
  358. /* In theory this value should be the maximum benchmarked
  359. * TCP/IP throughput, because with most of these devices the
  360. * bit rate is meaningless (overhead an co) to estimate how
  361. * fast the connection will go and pick the fastest one.
  362. * I suggest people to play with Netperf or any benchmark...
  363. */
  364. /* NWID (or domain id) */
  365. __u32 min_nwid; /* Minimal NWID we are able to set */
  366. __u32 max_nwid; /* Maximal NWID we are able to set */
  367. /* Frequency */
  368. __u16 num_channels; /* Number of channels [0; num - 1] */
  369. __u8 num_frequency; /* Number of entry in the list */
  370. struct iw_freq freq[IW_MAX_FREQUENCIES]; /* list */
  371. /* Note : this frequency list doesn't need to fit channel numbers */
  372. /* signal level threshold range */
  373. __s32 sensitivity;
  374. /* Quality of link & SNR stuff */
  375. struct iw_quality max_qual; /* Quality of the link */
  376. /* Rates */
  377. __u8 num_bitrates; /* Number of entries in the list */
  378. __s32 bitrate[IW_MAX_BITRATES]; /* list, in bps */
  379. /* RTS threshold */
  380. __s32 min_rts; /* Minimal RTS threshold */
  381. __s32 max_rts; /* Maximal RTS threshold */
  382. /* Frag threshold */
  383. __s32 min_frag; /* Minimal frag threshold */
  384. __s32 max_frag; /* Maximal frag threshold */
  385. /* Power Management duration & timeout */
  386. __s32 min_pmp; /* Minimal PM period */
  387. __s32 max_pmp; /* Maximal PM period */
  388. __s32 min_pmt; /* Minimal PM timeout */
  389. __s32 max_pmt; /* Maximal PM timeout */
  390. __u16 pmp_flags; /* How to decode max/min PM period */
  391. __u16 pmt_flags; /* How to decode max/min PM timeout */
  392. __u16 pm_capa; /* What PM options are supported */
  393. /* Encoder stuff */
  394. __u16 encoding_size[IW_MAX_ENCODING_SIZES]; /* Different token sizes */
  395. __u8 num_encoding_sizes; /* Number of entry in the list */
  396. __u8 max_encoding_tokens; /* Max number of tokens */
  397. /* Transmit power */
  398. __u16 txpower_capa; /* What options are supported */
  399. __u8 num_txpower; /* Number of entries in the list */
  400. __s32 txpower[IW_MAX_TXPOWER]; /* list, in bps */
  401. };
  402. /*
  403. * Private ioctl interface information
  404. */
  405. struct iw_priv_args
  406. {
  407. __u32 cmd; /* Number of the ioctl to issue */
  408. __u16 set_args; /* Type and number of args */
  409. __u16 get_args; /* Type and number of args */
  410. char name[IFNAMSIZ]; /* Name of the extension */
  411. };
  412. #endif /* _LINUX_WIRELESS_H */