1 /* 2 * This file define a set of standard wireless extensions 3 * 4 * Version : 17 21.6.04 5 * 6 * Authors : Jean Tourrilhes - HPL - <[email protected]> 7 * Copyright (c) 1997-2004 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 /* To minimise problems in user space, I might remove those headers 73 * at some point. Jean II */ 74 #include <linux/types.h> /* for "caddr_t" et al */ 75 #include <linux/socket.h> /* for "struct sockaddr" et al */ 76 #include <linux/if.h> /* for IFNAMSIZ and co... */ 77 78 /***************************** VERSION *****************************/ 79 /* 80 * This constant is used to know the availability of the wireless 81 * extensions and to know which version of wireless extensions it is 82 * (there is some stuff that will be added in the future...) 83 * I just plan to increment with each new version. 84 */ 85 #define WIRELESS_EXT 17 86 87 /* 88 * Changes : 89 * 90 * V2 to V3 91 * -------- 92 * Alan Cox start some incompatibles changes. I've integrated a bit more. 93 * - Encryption renamed to Encode to avoid US regulation problems 94 * - Frequency changed from float to struct to avoid problems on old 386 95 * 96 * V3 to V4 97 * -------- 98 * - Add sensitivity 99 * 100 * V4 to V5 101 * -------- 102 * - Missing encoding definitions in range 103 * - Access points stuff 104 * 105 * V5 to V6 106 * -------- 107 * - 802.11 support (ESSID ioctls) 108 * 109 * V6 to V7 110 * -------- 111 * - define IW_ESSID_MAX_SIZE and IW_MAX_AP 112 * 113 * V7 to V8 114 * -------- 115 * - Changed my e-mail address 116 * - More 802.11 support (nickname, rate, rts, frag) 117 * - List index in frequencies 118 * 119 * V8 to V9 120 * -------- 121 * - Support for 'mode of operation' (ad-hoc, managed...) 122 * - Support for unicast and multicast power saving 123 * - Change encoding to support larger tokens (>64 bits) 124 * - Updated iw_params (disable, flags) and use it for NWID 125 * - Extracted iw_point from iwreq for clarity 126 * 127 * V9 to V10 128 * --------- 129 * - Add PM capability to range structure 130 * - Add PM modifier : MAX/MIN/RELATIVE 131 * - Add encoding option : IW_ENCODE_NOKEY 132 * - Add TxPower ioctls (work like TxRate) 133 * 134 * V10 to V11 135 * ---------- 136 * - Add WE version in range (help backward/forward compatibility) 137 * - Add retry ioctls (work like PM) 138 * 139 * V11 to V12 140 * ---------- 141 * - Add SIOCSIWSTATS to get /proc/net/wireless programatically 142 * - Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space 143 * - Add new statistics (frag, retry, beacon) 144 * - Add average quality (for user space calibration) 145 * 146 * V12 to V13 147 * ---------- 148 * - Document creation of new driver API. 149 * - Extract union iwreq_data from struct iwreq (for new driver API). 150 * - Rename SIOCSIWNAME as SIOCSIWCOMMIT 151 * 152 * V13 to V14 153 * ---------- 154 * - Wireless Events support : define struct iw_event 155 * - Define additional specific event numbers 156 * - Add "addr" and "param" fields in union iwreq_data 157 * - AP scanning stuff (SIOCSIWSCAN and friends) 158 * 159 * V14 to V15 160 * ---------- 161 * - Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg 162 * - Make struct iw_freq signed (both m & e), add explicit padding 163 * - Add IWEVCUSTOM for driver specific event/scanning token 164 * - Add IW_MAX_GET_SPY for driver returning a lot of addresses 165 * - Add IW_TXPOW_RANGE for range of Tx Powers 166 * - Add IWEVREGISTERED & IWEVEXPIRED events for Access Points 167 * - Add IW_MODE_MONITOR for passive monitor 168 * 169 * V15 to V16 170 * ---------- 171 * - Increase the number of bitrates in iw_range to 32 (for 802.11g) 172 * - Increase the number of frequencies in iw_range to 32 (for 802.11b+a) 173 * - Reshuffle struct iw_range for increases, add filler 174 * - Increase IW_MAX_AP to 64 for driver returning a lot of addresses 175 * - Remove IW_MAX_GET_SPY because conflict with enhanced spy support 176 * - Add SIOCSIWTHRSPY/SIOCGIWTHRSPY and "struct iw_thrspy" 177 * - Add IW_ENCODE_TEMP and iw_range->encoding_login_index 178 * 179 * V16 to V17 180 * ---------- 181 * - Add flags to frequency -> auto/fixed 182 * - Document (struct iw_quality *)->updated, add new flags (INVALID) 183 * - Wireless Event capability in struct iw_range 184 * - Add support for relative TxPower (yick !) 185 */ 186 187 /**************************** CONSTANTS ****************************/ 188 189 /* -------------------------- IOCTL LIST -------------------------- */ 190 191 /* Wireless Identification */ 192 #define SIOCSIWCOMMIT 0x8B00 /* Commit pending changes to driver */ 193 #define SIOCGIWNAME 0x8B01 /* get name == wireless protocol */ 194 /* SIOCGIWNAME is used to verify the presence of Wireless Extensions. 195 * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"... 196 * Don't put the name of your driver there, it's useless. */ 197 198 /* Basic operations */ 199 #define SIOCSIWNWID 0x8B02 /* set network id (pre-802.11) */ 200 #define SIOCGIWNWID 0x8B03 /* get network id (the cell) */ 201 #define SIOCSIWFREQ 0x8B04 /* set channel/frequency (Hz) */ 202 #define SIOCGIWFREQ 0x8B05 /* get channel/frequency (Hz) */ 203 #define SIOCSIWMODE 0x8B06 /* set operation mode */ 204 #define SIOCGIWMODE 0x8B07 /* get operation mode */ 205 #define SIOCSIWSENS 0x8B08 /* set sensitivity (dBm) */ 206 #define SIOCGIWSENS 0x8B09 /* get sensitivity (dBm) */ 207 208 /* Informative stuff */ 209 #define SIOCSIWRANGE 0x8B0A /* Unused */ 210 #define SIOCGIWRANGE 0x8B0B /* Get range of parameters */ 211 #define SIOCSIWPRIV 0x8B0C /* Unused */ 212 #define SIOCGIWPRIV 0x8B0D /* get private ioctl interface info */ 213 #define SIOCSIWSTATS 0x8B0E /* Unused */ 214 #define SIOCGIWSTATS 0x8B0F /* Get /proc/net/wireless stats */ 215 /* SIOCGIWSTATS is strictly used between user space and the kernel, and 216 * is never passed to the driver (i.e. the driver will never see it). */ 217 218 /* Spy support (statistics per MAC address - used for Mobile IP support) */ 219 #define SIOCSIWSPY 0x8B10 /* set spy addresses */ 220 #define SIOCGIWSPY 0x8B11 /* get spy info (quality of link) */ 221 #define SIOCSIWTHRSPY 0x8B12 /* set spy threshold (spy event) */ 222 #define SIOCGIWTHRSPY 0x8B13 /* get spy threshold */ 223 224 /* Access Point manipulation */ 225 #define SIOCSIWAP 0x8B14 /* set access point MAC addresses */ 226 #define SIOCGIWAP 0x8B15 /* get access point MAC addresses */ 227 #define SIOCGIWAPLIST 0x8B17 /* Deprecated in favor of scanning */ 228 #define SIOCSIWSCAN 0x8B18 /* trigger scanning (list cells) */ 229 #define SIOCGIWSCAN 0x8B19 /* get scanning results */ 230 231 /* 802.11 specific support */ 232 #define SIOCSIWESSID 0x8B1A /* set ESSID (network name) */ 233 #define SIOCGIWESSID 0x8B1B /* get ESSID */ 234 #define SIOCSIWNICKN 0x8B1C /* set node name/nickname */ 235 #define SIOCGIWNICKN 0x8B1D /* get node name/nickname */ 236 /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit 237 * within the 'iwreq' structure, so we need to use the 'data' member to 238 * point to a string in user space, like it is done for RANGE... */ 239 240 /* Other parameters useful in 802.11 and some other devices */ 241 #define SIOCSIWRATE 0x8B20 /* set default bit rate (bps) */ 242 #define SIOCGIWRATE 0x8B21 /* get default bit rate (bps) */ 243 #define SIOCSIWRTS 0x8B22 /* set RTS/CTS threshold (bytes) */ 244 #define SIOCGIWRTS 0x8B23 /* get RTS/CTS threshold (bytes) */ 245 #define SIOCSIWFRAG 0x8B24 /* set fragmentation thr (bytes) */ 246 #define SIOCGIWFRAG 0x8B25 /* get fragmentation thr (bytes) */ 247 #define SIOCSIWTXPOW 0x8B26 /* set transmit power (dBm) */ 248 #define SIOCGIWTXPOW 0x8B27 /* get transmit power (dBm) */ 249 #define SIOCSIWRETRY 0x8B28 /* set retry limits and lifetime */ 250 #define SIOCGIWRETRY 0x8B29 /* get retry limits and lifetime */ 251 252 /* Encoding stuff (scrambling, hardware security, WEP...) */ 253 #define SIOCSIWENCODE 0x8B2A /* set encoding token & mode */ 254 #define SIOCGIWENCODE 0x8B2B /* get encoding token & mode */ 255 /* Power saving stuff (power management, unicast and multicast) */ 256 #define SIOCSIWPOWER 0x8B2C /* set Power Management settings */ 257 #define SIOCGIWPOWER 0x8B2D /* get Power Management settings */ 258 259 /* -------------------- DEV PRIVATE IOCTL LIST -------------------- */ 260 261 /* These 32 ioctl are wireless device private, for 16 commands. 262 * Each driver is free to use them for whatever purpose it chooses, 263 * however the driver *must* export the description of those ioctls 264 * with SIOCGIWPRIV and *must* use arguments as defined below. 265 * If you don't follow those rules, DaveM is going to hate you (reason : 266 * it make mixed 32/64bit operation impossible). 267 */ 268 #define SIOCIWFIRSTPRIV 0x8BE0 269 #define SIOCIWLASTPRIV 0x8BFF 270 /* Previously, we were using SIOCDEVPRIVATE, but we now have our 271 * separate range because of collisions with other tools such as 272 * 'mii-tool'. 273 * We now have 32 commands, so a bit more space ;-). 274 * Also, all 'odd' commands are only usable by root and don't return the 275 * content of ifr/iwr to user (but you are not obliged to use the set/get 276 * convention, just use every other two command). More details in iwpriv.c. 277 * And I repeat : you are not forced to use them with iwpriv, but you 278 * must be compliant with it. 279 */ 280 281 /* ------------------------- IOCTL STUFF ------------------------- */ 282 283 /* The first and the last (range) */ 284 #define SIOCIWFIRST 0x8B00 285 #define SIOCIWLAST SIOCIWLASTPRIV /* 0x8BFF */ 286 287 /* Even : get (world access), odd : set (root access) */ 288 #define IW_IS_SET(cmd) (!((cmd) & 0x1)) 289 #define IW_IS_GET(cmd) ((cmd) & 0x1) 290 291 /* ----------------------- WIRELESS EVENTS ----------------------- */ 292 /* Those are *NOT* ioctls, do not issue request on them !!! */ 293 /* Most events use the same identifier as ioctl requests */ 294 295 #define IWEVTXDROP 0x8C00 /* Packet dropped to excessive retry */ 296 #define IWEVQUAL 0x8C01 /* Quality part of statistics (scan) */ 297 #define IWEVCUSTOM 0x8C02 /* Driver specific ascii string */ 298 #define IWEVREGISTERED 0x8C03 /* Discovered a new node (AP mode) */ 299 #define IWEVEXPIRED 0x8C04 /* Expired a node (AP mode) */ 300 301 #define IWEVFIRST 0x8C00 302 303 /* ------------------------- PRIVATE INFO ------------------------- */ 304 /* 305 * The following is used with SIOCGIWPRIV. It allow a driver to define 306 * the interface (name, type of data) for its private ioctl. 307 * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV 308 */ 309 310 #define IW_PRIV_TYPE_MASK 0x7000 /* Type of arguments */ 311 #define IW_PRIV_TYPE_NONE 0x0000 312 #define IW_PRIV_TYPE_BYTE 0x1000 /* Char as number */ 313 #define IW_PRIV_TYPE_CHAR 0x2000 /* Char as character */ 314 #define IW_PRIV_TYPE_INT 0x4000 /* 32 bits int */ 315 #define IW_PRIV_TYPE_FLOAT 0x5000 /* struct iw_freq */ 316 #define IW_PRIV_TYPE_ADDR 0x6000 /* struct sockaddr */ 317 318 #define IW_PRIV_SIZE_FIXED 0x0800 /* Variable or fixed number of args */ 319 320 #define IW_PRIV_SIZE_MASK 0x07FF /* Max number of those args */ 321 322 /* 323 * Note : if the number of args is fixed and the size < 16 octets, 324 * instead of passing a pointer we will put args in the iwreq struct... 325 */ 326 327 /* ----------------------- OTHER CONSTANTS ----------------------- */ 328 329 /* Maximum frequencies in the range struct */ 330 #define IW_MAX_FREQUENCIES 32 331 /* Note : if you have something like 80 frequencies, 332 * don't increase this constant and don't fill the frequency list. 333 * The user will be able to set by channel anyway... */ 334 335 /* Maximum bit rates in the range struct */ 336 #define IW_MAX_BITRATES 32 337 338 /* Maximum tx powers in the range struct */ 339 #define IW_MAX_TXPOWER 8 340 /* Note : if you more than 8 TXPowers, just set the max and min or 341 * a few of them in the struct iw_range. */ 342 343 /* Maximum of address that you may set with SPY */ 344 #define IW_MAX_SPY 8 345 346 /* Maximum of address that you may get in the 347 list of access points in range */ 348 #define IW_MAX_AP 64 349 350 /* Maximum size of the ESSID and NICKN strings */ 351 #define IW_ESSID_MAX_SIZE 32 352 353 /* Modes of operation */ 354 #define IW_MODE_AUTO 0 /* Let the driver decides */ 355 #define IW_MODE_ADHOC 1 /* Single cell network */ 356 #define IW_MODE_INFRA 2 /* Multi cell network, roaming, ... */ 357 #define IW_MODE_MASTER 3 /* Synchronisation master or Access Point */ 358 #define IW_MODE_REPEAT 4 /* Wireless Repeater (forwarder) */ 359 #define IW_MODE_SECOND 5 /* Secondary master/repeater (backup) */ 360 #define IW_MODE_MONITOR 6 /* Passive monitor (listen only) */ 361 362 /* Statistics flags (bitmask in updated) */ 363 #define IW_QUAL_QUAL_UPDATED 0x1 /* Value was updated since last read */ 364 #define IW_QUAL_LEVEL_UPDATED 0x2 365 #define IW_QUAL_NOISE_UPDATED 0x4 366 #define IW_QUAL_QUAL_INVALID 0x10 /* Driver doesn't provide value */ 367 #define IW_QUAL_LEVEL_INVALID 0x20 368 #define IW_QUAL_NOISE_INVALID 0x40 369 370 /* Frequency flags */ 371 #define IW_FREQ_AUTO 0x00 /* Let the driver decides */ 372 #define IW_FREQ_FIXED 0x01 /* Force a specific value */ 373 374 /* Maximum number of size of encoding token available 375 * they are listed in the range structure */ 376 #define IW_MAX_ENCODING_SIZES 8 377 378 /* Maximum size of the encoding token in bytes */ 379 #define IW_ENCODING_TOKEN_MAX 32 /* 256 bits (for now) */ 380 381 /* Flags for encoding (along with the token) */ 382 #define IW_ENCODE_INDEX 0x00FF /* Token index (if needed) */ 383 #define IW_ENCODE_FLAGS 0xFF00 /* Flags defined below */ 384 #define IW_ENCODE_MODE 0xF000 /* Modes defined below */ 385 #define IW_ENCODE_DISABLED 0x8000 /* Encoding disabled */ 386 #define IW_ENCODE_ENABLED 0x0000 /* Encoding enabled */ 387 #define IW_ENCODE_RESTRICTED 0x4000 /* Refuse non-encoded packets */ 388 #define IW_ENCODE_OPEN 0x2000 /* Accept non-encoded packets */ 389 #define IW_ENCODE_NOKEY 0x0800 /* Key is write only, so not present */ 390 #define IW_ENCODE_TEMP 0x0400 /* Temporary key */ 391 392 /* Power management flags available (along with the value, if any) */ 393 #define IW_POWER_ON 0x0000 /* No details... */ 394 #define IW_POWER_TYPE 0xF000 /* Type of parameter */ 395 #define IW_POWER_PERIOD 0x1000 /* Value is a period/duration of */ 396 #define IW_POWER_TIMEOUT 0x2000 /* Value is a timeout (to go asleep) */ 397 #define IW_POWER_MODE 0x0F00 /* Power Management mode */ 398 #define IW_POWER_UNICAST_R 0x0100 /* Receive only unicast messages */ 399 #define IW_POWER_MULTICAST_R 0x0200 /* Receive only multicast messages */ 400 #define IW_POWER_ALL_R 0x0300 /* Receive all messages though PM */ 401 #define IW_POWER_FORCE_S 0x0400 /* Force PM procedure for sending unicast */ 402 #define IW_POWER_REPEATER 0x0800 /* Repeat broadcast messages in PM period */ 403 #define IW_POWER_MODIFIER 0x000F /* Modify a parameter */ 404 #define IW_POWER_MIN 0x0001 /* Value is a minimum */ 405 #define IW_POWER_MAX 0x0002 /* Value is a maximum */ 406 #define IW_POWER_RELATIVE 0x0004 /* Value is not in seconds/ms/us */ 407 408 /* Transmit Power flags available */ 409 #define IW_TXPOW_TYPE 0x00FF /* Type of value */ 410 #define IW_TXPOW_DBM 0x0000 /* Value is in dBm */ 411 #define IW_TXPOW_MWATT 0x0001 /* Value is in mW */ 412 #define IW_TXPOW_RELATIVE 0x0002 /* Value is in arbitrary units */ 413 #define IW_TXPOW_RANGE 0x1000 /* Range of value between min/max */ 414 415 /* Retry limits and lifetime flags available */ 416 #define IW_RETRY_ON 0x0000 /* No details... */ 417 #define IW_RETRY_TYPE 0xF000 /* Type of parameter */ 418 #define IW_RETRY_LIMIT 0x1000 /* Maximum number of retries*/ 419 #define IW_RETRY_LIFETIME 0x2000 /* Maximum duration of retries in us */ 420 #define IW_RETRY_MODIFIER 0x000F /* Modify a parameter */ 421 #define IW_RETRY_MIN 0x0001 /* Value is a minimum */ 422 #define IW_RETRY_MAX 0x0002 /* Value is a maximum */ 423 #define IW_RETRY_RELATIVE 0x0004 /* Value is not in seconds/ms/us */ 424 425 /* Scanning request flags */ 426 #define IW_SCAN_DEFAULT 0x0000 /* Default scan of the driver */ 427 #define IW_SCAN_ALL_ESSID 0x0001 /* Scan all ESSIDs */ 428 #define IW_SCAN_THIS_ESSID 0x0002 /* Scan only this ESSID */ 429 #define IW_SCAN_ALL_FREQ 0x0004 /* Scan all Frequencies */ 430 #define IW_SCAN_THIS_FREQ 0x0008 /* Scan only this Frequency */ 431 #define IW_SCAN_ALL_MODE 0x0010 /* Scan all Modes */ 432 #define IW_SCAN_THIS_MODE 0x0020 /* Scan only this Mode */ 433 #define IW_SCAN_ALL_RATE 0x0040 /* Scan all Bit-Rates */ 434 #define IW_SCAN_THIS_RATE 0x0080 /* Scan only this Bit-Rate */ 435 /* Maximum size of returned data */ 436 #define IW_SCAN_MAX_DATA 4096 /* In bytes */ 437 438 /* Max number of char in custom event - use multiple of them if needed */ 439 #define IW_CUSTOM_MAX 256 /* In bytes */ 440 441 /* Event capability macros - in (struct iw_range *)->event_capa 442 * Because we have more than 32 possible events, we use an array of 443 * 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */ 444 #define IW_EVENT_CAPA_BASE(cmd) ((cmd >= SIOCIWFIRSTPRIV) ? \ 445 (cmd - SIOCIWFIRSTPRIV + 0x60) : \ 446 (cmd - SIOCSIWCOMMIT)) 447 #define IW_EVENT_CAPA_INDEX(cmd) (IW_EVENT_CAPA_BASE(cmd) >> 5) 448 #define IW_EVENT_CAPA_MASK(cmd) (1 << (IW_EVENT_CAPA_BASE(cmd) & 0x1F)) 449 /* Event capability constants - event autogenerated by the kernel 450 * This list is valid for most 802.11 devices, customise as needed... */ 451 #define IW_EVENT_CAPA_K_0 (IW_EVENT_CAPA_MASK(0x8B04) | \ 452 IW_EVENT_CAPA_MASK(0x8B06) | \ 453 IW_EVENT_CAPA_MASK(0x8B1A)) 454 #define IW_EVENT_CAPA_K_1 (IW_EVENT_CAPA_MASK(0x8B2A)) 455 /* "Easy" macro to set events in iw_range (less efficient) */ 456 #define IW_EVENT_CAPA_SET(event_capa, cmd) (event_capa[IW_EVENT_CAPA_INDEX(cmd)] |= IW_EVENT_CAPA_MASK(cmd)) 457 #define IW_EVENT_CAPA_SET_KERNEL(event_capa) {event_capa[0] |= IW_EVENT_CAPA_K_0; event_capa[1] |= IW_EVENT_CAPA_K_1; } 458 459 460 /****************************** TYPES ******************************/ 461 462 /* --------------------------- SUBTYPES --------------------------- */ 463 /* 464 * Generic format for most parameters that fit in an int 465 */ 466 struct iw_param 467 { 468 __s32 value; /* The value of the parameter itself */ 469 __u8 fixed; /* Hardware should not use auto select */ 470 __u8 disabled; /* Disable the feature */ 471 __u16 flags; /* Various specifc flags (if any) */ 472 }; 473 474 /* 475 * For all data larger than 16 octets, we need to use a 476 * pointer to memory allocated in user space. 477 */ 478 struct iw_point 479 { 480 void __user *pointer; /* Pointer to the data (in user space) */ 481 __u16 length; /* number of fields or size in bytes */ 482 __u16 flags; /* Optional params */ 483 }; 484 485 /* 486 * A frequency 487 * For numbers lower than 10^9, we encode the number in 'm' and 488 * set 'e' to 0 489 * For number greater than 10^9, we divide it by the lowest power 490 * of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')... 491 * The power of 10 is in 'e', the result of the division is in 'm'. 492 */ 493 struct iw_freq 494 { 495 __s32 m; /* Mantissa */ 496 __s16 e; /* Exponent */ 497 __u8 i; /* List index (when in range struct) */ 498 __u8 flags; /* Flags (fixed/auto) */ 499 }; 500 501 /* 502 * Quality of the link 503 */ 504 struct iw_quality 505 { 506 __u8 qual; /* link quality (%retries, SNR, 507 %missed beacons or better...) */ 508 __u8 level; /* signal level (dBm) */ 509 __u8 noise; /* noise level (dBm) */ 510 __u8 updated; /* Flags to know if updated */ 511 }; 512 513 /* 514 * Packet discarded in the wireless adapter due to 515 * "wireless" specific problems... 516 * Note : the list of counter and statistics in net_device_stats 517 * is already pretty exhaustive, and you should use that first. 518 * This is only additional stats... 519 */ 520 struct iw_discarded 521 { 522 __u32 nwid; /* Rx : Wrong nwid/essid */ 523 __u32 code; /* Rx : Unable to code/decode (WEP) */ 524 __u32 fragment; /* Rx : Can't perform MAC reassembly */ 525 __u32 retries; /* Tx : Max MAC retries num reached */ 526 __u32 misc; /* Others cases */ 527 }; 528 529 /* 530 * Packet/Time period missed in the wireless adapter due to 531 * "wireless" specific problems... 532 */ 533 struct iw_missed 534 { 535 __u32 beacon; /* Missed beacons/superframe */ 536 }; 537 538 /* 539 * Quality range (for spy threshold) 540 */ 541 struct iw_thrspy 542 { 543 struct sockaddr addr; /* Source address (hw/mac) */ 544 struct iw_quality qual; /* Quality of the link */ 545 struct iw_quality low; /* Low threshold */ 546 struct iw_quality high; /* High threshold */ 547 }; 548 549 /* ------------------------ WIRELESS STATS ------------------------ */ 550 /* 551 * Wireless statistics (used for /proc/net/wireless) 552 */ 553 struct iw_statistics 554 { 555 __u16 status; /* Status 556 * - device dependent for now */ 557 558 struct iw_quality qual; /* Quality of the link 559 * (instant/mean/max) */ 560 struct iw_discarded discard; /* Packet discarded counts */ 561 struct iw_missed miss; /* Packet missed counts */ 562 }; 563 564 /* ------------------------ IOCTL REQUEST ------------------------ */ 565 /* 566 * This structure defines the payload of an ioctl, and is used 567 * below. 568 * 569 * Note that this structure should fit on the memory footprint 570 * of iwreq (which is the same as ifreq), which mean a max size of 571 * 16 octets = 128 bits. Warning, pointers might be 64 bits wide... 572 * You should check this when increasing the structures defined 573 * above in this file... 574 */ 575 union iwreq_data 576 { 577 /* Config - generic */ 578 char name[IFNAMSIZ]; 579 /* Name : used to verify the presence of wireless extensions. 580 * Name of the protocol/provider... */ 581 582 struct iw_point essid; /* Extended network name */ 583 struct iw_param nwid; /* network id (or domain - the cell) */ 584 struct iw_freq freq; /* frequency or channel : 585 * 0-1000 = channel 586 * > 1000 = frequency in Hz */ 587 588 struct iw_param sens; /* signal level threshold */ 589 struct iw_param bitrate; /* default bit rate */ 590 struct iw_param txpower; /* default transmit power */ 591 struct iw_param rts; /* RTS threshold threshold */ 592 struct iw_param frag; /* Fragmentation threshold */ 593 __u32 mode; /* Operation mode */ 594 struct iw_param retry; /* Retry limits & lifetime */ 595 596 struct iw_point encoding; /* Encoding stuff : tokens */ 597 struct iw_param power; /* PM duration/timeout */ 598 struct iw_quality qual; /* Quality part of statistics */ 599 600 struct sockaddr ap_addr; /* Access point address */ 601 struct sockaddr addr; /* Destination address (hw/mac) */ 602 603 struct iw_param param; /* Other small parameters */ 604 struct iw_point data; /* Other large parameters */ 605 }; 606 607 /* 608 * The structure to exchange data for ioctl. 609 * This structure is the same as 'struct ifreq', but (re)defined for 610 * convenience... 611 * Do I need to remind you about structure size (32 octets) ? 612 */ 613 struct iwreq 614 { 615 union 616 { 617 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "eth0" */ 618 } ifr_ifrn; 619 620 /* Data part (defined just above) */ 621 union iwreq_data u; 622 }; 623 624 /* -------------------------- IOCTL DATA -------------------------- */ 625 /* 626 * For those ioctl which want to exchange mode data that what could 627 * fit in the above structure... 628 */ 629 630 /* 631 * Range of parameters 632 */ 633 634 struct iw_range 635 { 636 /* Informative stuff (to choose between different interface) */ 637 __u32 throughput; /* To give an idea... */ 638 /* In theory this value should be the maximum benchmarked 639 * TCP/IP throughput, because with most of these devices the 640 * bit rate is meaningless (overhead an co) to estimate how 641 * fast the connection will go and pick the fastest one. 642 * I suggest people to play with Netperf or any benchmark... 643 */ 644 645 /* NWID (or domain id) */ 646 __u32 min_nwid; /* Minimal NWID we are able to set */ 647 __u32 max_nwid; /* Maximal NWID we are able to set */ 648 649 /* Old Frequency (backward compat - moved lower ) */ 650 __u16 old_num_channels; 651 __u8 old_num_frequency; 652 653 /* Wireless event capability bitmasks */ 654 __u32 event_capa[6]; 655 656 /* signal level threshold range */ 657 __s32 sensitivity; 658 659 /* Quality of link & SNR stuff */ 660 /* Quality range (link, level, noise) 661 * If the quality is absolute, it will be in the range [0 ; max_qual], 662 * if the quality is dBm, it will be in the range [max_qual ; 0]. 663 * Don't forget that we use 8 bit arithmetics... */ 664 struct iw_quality max_qual; /* Quality of the link */ 665 /* This should contain the average/typical values of the quality 666 * indicator. This should be the threshold between a "good" and 667 * a "bad" link (example : monitor going from green to orange). 668 * Currently, user space apps like quality monitors don't have any 669 * way to calibrate the measurement. With this, they can split 670 * the range between 0 and max_qual in different quality level 671 * (using a geometric subdivision centered on the average). 672 * I expect that people doing the user space apps will feedback 673 * us on which value we need to put in each driver... */ 674 struct iw_quality avg_qual; /* Quality of the link */ 675 676 /* Rates */ 677 __u8 num_bitrates; /* Number of entries in the list */ 678 __s32 bitrate[IW_MAX_BITRATES]; /* list, in bps */ 679 680 /* RTS threshold */ 681 __s32 min_rts; /* Minimal RTS threshold */ 682 __s32 max_rts; /* Maximal RTS threshold */ 683 684 /* Frag threshold */ 685 __s32 min_frag; /* Minimal frag threshold */ 686 __s32 max_frag; /* Maximal frag threshold */ 687 688 /* Power Management duration & timeout */ 689 __s32 min_pmp; /* Minimal PM period */ 690 __s32 max_pmp; /* Maximal PM period */ 691 __s32 min_pmt; /* Minimal PM timeout */ 692 __s32 max_pmt; /* Maximal PM timeout */ 693 __u16 pmp_flags; /* How to decode max/min PM period */ 694 __u16 pmt_flags; /* How to decode max/min PM timeout */ 695 __u16 pm_capa; /* What PM options are supported */ 696 697 /* Encoder stuff */ 698 __u16 encoding_size[IW_MAX_ENCODING_SIZES]; /* Different token sizes */ 699 __u8 num_encoding_sizes; /* Number of entry in the list */ 700 __u8 max_encoding_tokens; /* Max number of tokens */ 701 /* For drivers that need a "login/passwd" form */ 702 __u8 encoding_login_index; /* token index for login token */ 703 704 /* Transmit power */ 705 __u16 txpower_capa; /* What options are supported */ 706 __u8 num_txpower; /* Number of entries in the list */ 707 __s32 txpower[IW_MAX_TXPOWER]; /* list, in bps */ 708 709 /* Wireless Extension version info */ 710 __u8 we_version_compiled; /* Must be WIRELESS_EXT */ 711 __u8 we_version_source; /* Last update of source */ 712 713 /* Retry limits and lifetime */ 714 __u16 retry_capa; /* What retry options are supported */ 715 __u16 retry_flags; /* How to decode max/min retry limit */ 716 __u16 r_time_flags; /* How to decode max/min retry life */ 717 __s32 min_retry; /* Minimal number of retries */ 718 __s32 max_retry; /* Maximal number of retries */ 719 __s32 min_r_time; /* Minimal retry lifetime */ 720 __s32 max_r_time; /* Maximal retry lifetime */ 721 722 /* Frequency */ 723 __u16 num_channels; /* Number of channels [0; num - 1] */ 724 __u8 num_frequency; /* Number of entry in the list */ 725 struct iw_freq freq[IW_MAX_FREQUENCIES]; /* list */ 726 /* Note : this frequency list doesn't need to fit channel numbers, 727 * because each entry contain its channel index */ 728 }; 729 730 /* 731 * Private ioctl interface information 732 */ 733 734 struct iw_priv_args 735 { 736 __u32 cmd; /* Number of the ioctl to issue */ 737 __u16 set_args; /* Type and number of args */ 738 __u16 get_args; /* Type and number of args */ 739 char name[IFNAMSIZ]; /* Name of the extension */ 740 }; 741 742 /* ----------------------- WIRELESS EVENTS ----------------------- */ 743 /* 744 * Wireless events are carried through the rtnetlink socket to user 745 * space. They are encapsulated in the IFLA_WIRELESS field of 746 * a RTM_NEWLINK message. 747 */ 748 749 /* 750 * A Wireless Event. Contains basically the same data as the ioctl... 751 */ 752 struct iw_event 753 { 754 __u16 len; /* Real lenght of this stuff */ 755 __u16 cmd; /* Wireless IOCTL */ 756 union iwreq_data u; /* IOCTL fixed payload */ 757 }; 758 759 /* Size of the Event prefix (including padding and alignement junk) */ 760 #define IW_EV_LCP_LEN (sizeof(struct iw_event) - sizeof(union iwreq_data)) 761 /* Size of the various events */ 762 #define IW_EV_CHAR_LEN (IW_EV_LCP_LEN + IFNAMSIZ) 763 #define IW_EV_UINT_LEN (IW_EV_LCP_LEN + sizeof(__u32)) 764 #define IW_EV_FREQ_LEN (IW_EV_LCP_LEN + sizeof(struct iw_freq)) 765 #define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point)) 766 #define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param)) 767 #define IW_EV_ADDR_LEN (IW_EV_LCP_LEN + sizeof(struct sockaddr)) 768 #define IW_EV_QUAL_LEN (IW_EV_LCP_LEN + sizeof(struct iw_quality)) 769 770 /* Note : in the case of iw_point, the extra data will come at the 771 * end of the event */ 772 773 #endif /* _LINUX_WIRELESS_H */ 774