1 /* 2 * This file define a set of standard wireless extensions 3 * 4 * Version : 16 2.4.03 5 * 6 * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com> 7 * Copyright (c) 1997-2002 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 * # include/linux/wireless.c 51 * 52 * Wireless Events (2002 -> onward) : 53 * -------------------------------- 54 * Events are defined at the end of this file, and implemented in : 55 * # include/linux/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 16 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 */ 179 180 /**************************** CONSTANTS ****************************/ 181 182 /* -------------------------- IOCTL LIST -------------------------- */ 183 184 /* Wireless Identification */ 185 #define SIOCSIWCOMMIT 0x8B00 /* Commit pending changes to driver */ 186 #define SIOCGIWNAME 0x8B01 /* get name == wireless protocol */ 187 /* SIOCGIWNAME is used to verify the presence of Wireless Extensions. 188 * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"... 189 * Don't put the name of your driver there, it's useless. */ 190 191 /* Basic operations */ 192 #define SIOCSIWNWID 0x8B02 /* set network id (pre-802.11) */ 193 #define SIOCGIWNWID 0x8B03 /* get network id (the cell) */ 194 #define SIOCSIWFREQ 0x8B04 /* set channel/frequency (Hz) */ 195 #define SIOCGIWFREQ 0x8B05 /* get channel/frequency (Hz) */ 196 #define SIOCSIWMODE 0x8B06 /* set operation mode */ 197 #define SIOCGIWMODE 0x8B07 /* get operation mode */ 198 #define SIOCSIWSENS 0x8B08 /* set sensitivity (dBm) */ 199 #define SIOCGIWSENS 0x8B09 /* get sensitivity (dBm) */ 200 201 /* Informative stuff */ 202 #define SIOCSIWRANGE 0x8B0A /* Unused */ 203 #define SIOCGIWRANGE 0x8B0B /* Get range of parameters */ 204 #define SIOCSIWPRIV 0x8B0C /* Unused */ 205 #define SIOCGIWPRIV 0x8B0D /* get private ioctl interface info */ 206 #define SIOCSIWSTATS 0x8B0E /* Unused */ 207 #define SIOCGIWSTATS 0x8B0F /* Get /proc/net/wireless stats */ 208 /* SIOCGIWSTATS is strictly used between user space and the kernel, and 209 * is never passed to the driver (i.e. the driver will never see it). */ 210 211 /* Spy support (statistics per MAC address - used for Mobile IP support) */ 212 #define SIOCSIWSPY 0x8B10 /* set spy addresses */ 213 #define SIOCGIWSPY 0x8B11 /* get spy info (quality of link) */ 214 #define SIOCSIWTHRSPY 0x8B12 /* set spy threshold (spy event) */ 215 #define SIOCGIWTHRSPY 0x8B13 /* get spy threshold */ 216 217 /* Access Point manipulation */ 218 #define SIOCSIWAP 0x8B14 /* set access point MAC addresses */ 219 #define SIOCGIWAP 0x8B15 /* get access point MAC addresses */ 220 #define SIOCGIWAPLIST 0x8B17 /* Deprecated in favor of scanning */ 221 #define SIOCSIWSCAN 0x8B18 /* trigger scanning (list cells) */ 222 #define SIOCGIWSCAN 0x8B19 /* get scanning results */ 223 224 /* 802.11 specific support */ 225 #define SIOCSIWESSID 0x8B1A /* set ESSID (network name) */ 226 #define SIOCGIWESSID 0x8B1B /* get ESSID */ 227 #define SIOCSIWNICKN 0x8B1C /* set node name/nickname */ 228 #define SIOCGIWNICKN 0x8B1D /* get node name/nickname */ 229 /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit 230 * within the 'iwreq' structure, so we need to use the 'data' member to 231 * point to a string in user space, like it is done for RANGE... */ 232 233 /* Other parameters useful in 802.11 and some other devices */ 234 #define SIOCSIWRATE 0x8B20 /* set default bit rate (bps) */ 235 #define SIOCGIWRATE 0x8B21 /* get default bit rate (bps) */ 236 #define SIOCSIWRTS 0x8B22 /* set RTS/CTS threshold (bytes) */ 237 #define SIOCGIWRTS 0x8B23 /* get RTS/CTS threshold (bytes) */ 238 #define SIOCSIWFRAG 0x8B24 /* set fragmentation thr (bytes) */ 239 #define SIOCGIWFRAG 0x8B25 /* get fragmentation thr (bytes) */ 240 #define SIOCSIWTXPOW 0x8B26 /* set transmit power (dBm) */ 241 #define SIOCGIWTXPOW 0x8B27 /* get transmit power (dBm) */ 242 #define SIOCSIWRETRY 0x8B28 /* set retry limits and lifetime */ 243 #define SIOCGIWRETRY 0x8B29 /* get retry limits and lifetime */ 244 245 /* Encoding stuff (scrambling, hardware security, WEP...) */ 246 #define SIOCSIWENCODE 0x8B2A /* set encoding token & mode */ 247 #define SIOCGIWENCODE 0x8B2B /* get encoding token & mode */ 248 /* Power saving stuff (power management, unicast and multicast) */ 249 #define SIOCSIWPOWER 0x8B2C /* set Power Management settings */ 250 #define SIOCGIWPOWER 0x8B2D /* get Power Management settings */ 251 252 /* -------------------- DEV PRIVATE IOCTL LIST -------------------- */ 253 254 /* These 16 ioctl are wireless device private. 255 * Each driver is free to use them for whatever purpose it chooses, 256 * however the driver *must* export the description of those ioctls 257 * with SIOCGIWPRIV and *must* use arguments as defined below. 258 * If you don't follow those rules, DaveM is going to hate you (reason : 259 * it make mixed 32/64bit operation impossible). 260 */ 261 #define SIOCIWFIRSTPRIV 0x8BE0 262 #define SIOCIWLASTPRIV 0x8BFF 263 /* Previously, we were using SIOCDEVPRIVATE, but we now have our 264 * separate range because of collisions with other tools such as 265 * 'mii-tool'. 266 * We now have 32 commands, so a bit more space ;-). 267 * Also, all 'odd' commands are only usable by root and don't return the 268 * content of ifr/iwr to user (but you are not obliged to use the set/get 269 * convention, just use every other two command). 270 * And I repeat : you are not obliged to use them with iwspy, but you 271 * must be compliant with it. 272 */ 273 274 /* ------------------------- IOCTL STUFF ------------------------- */ 275 276 /* The first and the last (range) */ 277 #define SIOCIWFIRST 0x8B00 278 #define SIOCIWLAST SIOCIWLASTPRIV /* 0x8BFF */ 279 280 /* Even : get (world access), odd : set (root access) */ 281 #define IW_IS_SET(cmd) (!((cmd) & 0x1)) 282 #define IW_IS_GET(cmd) ((cmd) & 0x1) 283 284 /* ----------------------- WIRELESS EVENTS ----------------------- */ 285 /* Those are *NOT* ioctls, do not issue request on them !!! */ 286 /* Most events use the same identifier as ioctl requests */ 287 288 #define IWEVTXDROP 0x8C00 /* Packet dropped to excessive retry */ 289 #define IWEVQUAL 0x8C01 /* Quality part of statistics (scan) */ 290 #define IWEVCUSTOM 0x8C02 /* Driver specific ascii string */ 291 #define IWEVREGISTERED 0x8C03 /* Discovered a new node (AP mode) */ 292 #define IWEVEXPIRED 0x8C04 /* Expired a node (AP mode) */ 293 294 #define IWEVFIRST 0x8C00 295 296 /* ------------------------- PRIVATE INFO ------------------------- */ 297 /* 298 * The following is used with SIOCGIWPRIV. It allow a driver to define 299 * the interface (name, type of data) for its private ioctl. 300 * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV 301 */ 302 303 #define IW_PRIV_TYPE_MASK 0x7000 /* Type of arguments */ 304 #define IW_PRIV_TYPE_NONE 0x0000 305 #define IW_PRIV_TYPE_BYTE 0x1000 /* Char as number */ 306 #define IW_PRIV_TYPE_CHAR 0x2000 /* Char as character */ 307 #define IW_PRIV_TYPE_INT 0x4000 /* 32 bits int */ 308 #define IW_PRIV_TYPE_FLOAT 0x5000 /* struct iw_freq */ 309 #define IW_PRIV_TYPE_ADDR 0x6000 /* struct sockaddr */ 310 311 #define IW_PRIV_SIZE_FIXED 0x0800 /* Variable or fixed number of args */ 312 313 #define IW_PRIV_SIZE_MASK 0x07FF /* Max number of those args */ 314 315 /* 316 * Note : if the number of args is fixed and the size < 16 octets, 317 * instead of passing a pointer we will put args in the iwreq struct... 318 */ 319 320 /* ----------------------- OTHER CONSTANTS ----------------------- */ 321 322 /* Maximum frequencies in the range struct */ 323 #define IW_MAX_FREQUENCIES 32 324 /* Note : if you have something like 80 frequencies, 325 * don't increase this constant and don't fill the frequency list. 326 * The user will be able to set by channel anyway... */ 327 328 /* Maximum bit rates in the range struct */ 329 #define IW_MAX_BITRATES 32 330 331 /* Maximum tx powers in the range struct */ 332 #define IW_MAX_TXPOWER 8 333 /* Note : if you more than 8 TXPowers, just set the max and min or 334 * a few of them in the struct iw_range. */ 335 336 /* Maximum of address that you may set with SPY */ 337 #define IW_MAX_SPY 8 338 339 /* Maximum of address that you may get in the 340 list of access points in range */ 341 #define IW_MAX_AP 64 342 343 /* Maximum size of the ESSID and NICKN strings */ 344 #define IW_ESSID_MAX_SIZE 32 345 346 /* Modes of operation */ 347 #define IW_MODE_AUTO 0 /* Let the driver decides */ 348 #define IW_MODE_ADHOC 1 /* Single cell network */ 349 #define IW_MODE_INFRA 2 /* Multi cell network, roaming, ... */ 350 #define IW_MODE_MASTER 3 /* Synchronisation master or Access Point */ 351 #define IW_MODE_REPEAT 4 /* Wireless Repeater (forwarder) */ 352 #define IW_MODE_SECOND 5 /* Secondary master/repeater (backup) */ 353 #define IW_MODE_MONITOR 6 /* Passive monitor (listen only) */ 354 355 /* Maximum number of size of encoding token available 356 * they are listed in the range structure */ 357 #define IW_MAX_ENCODING_SIZES 8 358 359 /* Maximum size of the encoding token in bytes */ 360 #define IW_ENCODING_TOKEN_MAX 32 /* 256 bits (for now) */ 361 362 /* Flags for encoding (along with the token) */ 363 #define IW_ENCODE_INDEX 0x00FF /* Token index (if needed) */ 364 #define IW_ENCODE_FLAGS 0xFF00 /* Flags defined below */ 365 #define IW_ENCODE_MODE 0xF000 /* Modes defined below */ 366 #define IW_ENCODE_DISABLED 0x8000 /* Encoding disabled */ 367 #define IW_ENCODE_ENABLED 0x0000 /* Encoding enabled */ 368 #define IW_ENCODE_RESTRICTED 0x4000 /* Refuse non-encoded packets */ 369 #define IW_ENCODE_OPEN 0x2000 /* Accept non-encoded packets */ 370 #define IW_ENCODE_NOKEY 0x0800 /* Key is write only, so not present */ 371 #define IW_ENCODE_TEMP 0x0400 /* Temporary key */ 372 373 /* Power management flags available (along with the value, if any) */ 374 #define IW_POWER_ON 0x0000 /* No details... */ 375 #define IW_POWER_TYPE 0xF000 /* Type of parameter */ 376 #define IW_POWER_PERIOD 0x1000 /* Value is a period/duration of */ 377 #define IW_POWER_TIMEOUT 0x2000 /* Value is a timeout (to go asleep) */ 378 #define IW_POWER_MODE 0x0F00 /* Power Management mode */ 379 #define IW_POWER_UNICAST_R 0x0100 /* Receive only unicast messages */ 380 #define IW_POWER_MULTICAST_R 0x0200 /* Receive only multicast messages */ 381 #define IW_POWER_ALL_R 0x0300 /* Receive all messages though PM */ 382 #define IW_POWER_FORCE_S 0x0400 /* Force PM procedure for sending unicast */ 383 #define IW_POWER_REPEATER 0x0800 /* Repeat broadcast messages in PM period */ 384 #define IW_POWER_MODIFIER 0x000F /* Modify a parameter */ 385 #define IW_POWER_MIN 0x0001 /* Value is a minimum */ 386 #define IW_POWER_MAX 0x0002 /* Value is a maximum */ 387 #define IW_POWER_RELATIVE 0x0004 /* Value is not in seconds/ms/us */ 388 389 /* Transmit Power flags available */ 390 #define IW_TXPOW_TYPE 0x00FF /* Type of value */ 391 #define IW_TXPOW_DBM 0x0000 /* Value is in dBm */ 392 #define IW_TXPOW_MWATT 0x0001 /* Value is in mW */ 393 #define IW_TXPOW_RANGE 0x1000 /* Range of value between min/max */ 394 395 /* Retry limits and lifetime flags available */ 396 #define IW_RETRY_ON 0x0000 /* No details... */ 397 #define IW_RETRY_TYPE 0xF000 /* Type of parameter */ 398 #define IW_RETRY_LIMIT 0x1000 /* Maximum number of retries*/ 399 #define IW_RETRY_LIFETIME 0x2000 /* Maximum duration of retries in us */ 400 #define IW_RETRY_MODIFIER 0x000F /* Modify a parameter */ 401 #define IW_RETRY_MIN 0x0001 /* Value is a minimum */ 402 #define IW_RETRY_MAX 0x0002 /* Value is a maximum */ 403 #define IW_RETRY_RELATIVE 0x0004 /* Value is not in seconds/ms/us */ 404 405 /* Scanning request flags */ 406 #define IW_SCAN_DEFAULT 0x0000 /* Default scan of the driver */ 407 #define IW_SCAN_ALL_ESSID 0x0001 /* Scan all ESSIDs */ 408 #define IW_SCAN_THIS_ESSID 0x0002 /* Scan only this ESSID */ 409 #define IW_SCAN_ALL_FREQ 0x0004 /* Scan all Frequencies */ 410 #define IW_SCAN_THIS_FREQ 0x0008 /* Scan only this Frequency */ 411 #define IW_SCAN_ALL_MODE 0x0010 /* Scan all Modes */ 412 #define IW_SCAN_THIS_MODE 0x0020 /* Scan only this Mode */ 413 #define IW_SCAN_ALL_RATE 0x0040 /* Scan all Bit-Rates */ 414 #define IW_SCAN_THIS_RATE 0x0080 /* Scan only this Bit-Rate */ 415 /* Maximum size of returned data */ 416 #define IW_SCAN_MAX_DATA 4096 /* In bytes */ 417 418 /* Max number of char in custom event - use multiple of them if needed */ 419 #define IW_CUSTOM_MAX 256 /* In bytes */ 420 421 /****************************** TYPES ******************************/ 422 423 /* --------------------------- SUBTYPES --------------------------- */ 424 /* 425 * Generic format for most parameters that fit in an int 426 */ 427 struct iw_param 428 { 429 __s32 value; /* The value of the parameter itself */ 430 __u8 fixed; /* Hardware should not use auto select */ 431 __u8 disabled; /* Disable the feature */ 432 __u16 flags; /* Various specifc flags (if any) */ 433 }; 434 435 /* 436 * For all data larger than 16 octets, we need to use a 437 * pointer to memory allocated in user space. 438 */ 439 struct iw_point 440 { 441 caddr_t pointer; /* Pointer to the data (in user space) */ 442 __u16 length; /* number of fields or size in bytes */ 443 __u16 flags; /* Optional params */ 444 }; 445 446 /* 447 * A frequency 448 * For numbers lower than 10^9, we encode the number in 'm' and 449 * set 'e' to 0 450 * For number greater than 10^9, we divide it by the lowest power 451 * of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')... 452 * The power of 10 is in 'e', the result of the division is in 'm'. 453 */ 454 struct iw_freq 455 { 456 __s32 m; /* Mantissa */ 457 __s16 e; /* Exponent */ 458 __u8 i; /* List index (when in range struct) */ 459 __u8 pad; /* Unused - just for alignement */ 460 }; 461 462 /* 463 * Quality of the link 464 */ 465 struct iw_quality 466 { 467 __u8 qual; /* link quality (%retries, SNR, 468 %missed beacons or better...) */ 469 __u8 level; /* signal level (dBm) */ 470 __u8 noise; /* noise level (dBm) */ 471 __u8 updated; /* Flags to know if updated */ 472 }; 473 474 /* 475 * Packet discarded in the wireless adapter due to 476 * "wireless" specific problems... 477 * Note : the list of counter and statistics in net_device_stats 478 * is already pretty exhaustive, and you should use that first. 479 * This is only additional stats... 480 */ 481 struct iw_discarded 482 { 483 __u32 nwid; /* Rx : Wrong nwid/essid */ 484 __u32 code; /* Rx : Unable to code/decode (WEP) */ 485 __u32 fragment; /* Rx : Can't perform MAC reassembly */ 486 __u32 retries; /* Tx : Max MAC retries num reached */ 487 __u32 misc; /* Others cases */ 488 }; 489 490 /* 491 * Packet/Time period missed in the wireless adapter due to 492 * "wireless" specific problems... 493 */ 494 struct iw_missed 495 { 496 __u32 beacon; /* Missed beacons/superframe */ 497 }; 498 499 /* 500 * Quality range (for spy threshold) 501 */ 502 struct iw_thrspy 503 { 504 struct sockaddr addr; /* Source address (hw/mac) */ 505 struct iw_quality qual; /* Quality of the link */ 506 struct iw_quality low; /* Low threshold */ 507 struct iw_quality high; /* High threshold */ 508 }; 509 510 /* ------------------------ WIRELESS STATS ------------------------ */ 511 /* 512 * Wireless statistics (used for /proc/net/wireless) 513 */ 514 struct iw_statistics 515 { 516 __u16 status; /* Status 517 * - device dependent for now */ 518 519 struct iw_quality qual; /* Quality of the link 520 * (instant/mean/max) */ 521 struct iw_discarded discard; /* Packet discarded counts */ 522 struct iw_missed miss; /* Packet missed counts */ 523 }; 524 525 /* ------------------------ IOCTL REQUEST ------------------------ */ 526 /* 527 * This structure defines the payload of an ioctl, and is used 528 * below. 529 * 530 * Note that this structure should fit on the memory footprint 531 * of iwreq (which is the same as ifreq), which mean a max size of 532 * 16 octets = 128 bits. Warning, pointers might be 64 bits wide... 533 * You should check this when increasing the structures defined 534 * above in this file... 535 */ 536 union iwreq_data 537 { 538 /* Config - generic */ 539 char name[IFNAMSIZ]; 540 /* Name : used to verify the presence of wireless extensions. 541 * Name of the protocol/provider... */ 542 543 struct iw_point essid; /* Extended network name */ 544 struct iw_param nwid; /* network id (or domain - the cell) */ 545 struct iw_freq freq; /* frequency or channel : 546 * 0-1000 = channel 547 * > 1000 = frequency in Hz */ 548 549 struct iw_param sens; /* signal level threshold */ 550 struct iw_param bitrate; /* default bit rate */ 551 struct iw_param txpower; /* default transmit power */ 552 struct iw_param rts; /* RTS threshold threshold */ 553 struct iw_param frag; /* Fragmentation threshold */ 554 __u32 mode; /* Operation mode */ 555 struct iw_param retry; /* Retry limits & lifetime */ 556 557 struct iw_point encoding; /* Encoding stuff : tokens */ 558 struct iw_param power; /* PM duration/timeout */ 559 struct iw_quality qual; /* Quality part of statistics */ 560 561 struct sockaddr ap_addr; /* Access point address */ 562 struct sockaddr addr; /* Destination address (hw/mac) */ 563 564 struct iw_param param; /* Other small parameters */ 565 struct iw_point data; /* Other large parameters */ 566 }; 567 568 /* 569 * The structure to exchange data for ioctl. 570 * This structure is the same as 'struct ifreq', but (re)defined for 571 * convenience... 572 * Do I need to remind you about structure size (32 octets) ? 573 */ 574 struct iwreq 575 { 576 union 577 { 578 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "eth0" */ 579 } ifr_ifrn; 580 581 /* Data part (defined just above) */ 582 union iwreq_data u; 583 }; 584 585 /* -------------------------- IOCTL DATA -------------------------- */ 586 /* 587 * For those ioctl which want to exchange mode data that what could 588 * fit in the above structure... 589 */ 590 591 /* 592 * Range of parameters 593 */ 594 595 struct iw_range 596 { 597 /* Informative stuff (to choose between different interface) */ 598 __u32 throughput; /* To give an idea... */ 599 /* In theory this value should be the maximum benchmarked 600 * TCP/IP throughput, because with most of these devices the 601 * bit rate is meaningless (overhead an co) to estimate how 602 * fast the connection will go and pick the fastest one. 603 * I suggest people to play with Netperf or any benchmark... 604 */ 605 606 /* NWID (or domain id) */ 607 __u32 min_nwid; /* Minimal NWID we are able to set */ 608 __u32 max_nwid; /* Maximal NWID we are able to set */ 609 610 /* Old Frequency (backward compat - moved lower ) */ 611 __u16 old_num_channels; 612 __u8 old_num_frequency; 613 /* Filler to keep "version" at the same offset */ 614 __s32 old_freq[6]; 615 616 /* signal level threshold range */ 617 __s32 sensitivity; 618 619 /* Quality of link & SNR stuff */ 620 /* Quality range (link, level, noise) 621 * If the quality is absolute, it will be in the range [0 ; max_qual], 622 * if the quality is dBm, it will be in the range [max_qual ; 0]. 623 * Don't forget that we use 8 bit arithmetics... */ 624 struct iw_quality max_qual; /* Quality of the link */ 625 /* This should contain the average/typical values of the quality 626 * indicator. This should be the threshold between a "good" and 627 * a "bad" link (example : monitor going from green to orange). 628 * Currently, user space apps like quality monitors don't have any 629 * way to calibrate the measurement. With this, they can split 630 * the range between 0 and max_qual in different quality level 631 * (using a geometric subdivision centered on the average). 632 * I expect that people doing the user space apps will feedback 633 * us on which value we need to put in each driver... */ 634 struct iw_quality avg_qual; /* Quality of the link */ 635 636 /* Rates */ 637 __u8 num_bitrates; /* Number of entries in the list */ 638 __s32 bitrate[IW_MAX_BITRATES]; /* list, in bps */ 639 640 /* RTS threshold */ 641 __s32 min_rts; /* Minimal RTS threshold */ 642 __s32 max_rts; /* Maximal RTS threshold */ 643 644 /* Frag threshold */ 645 __s32 min_frag; /* Minimal frag threshold */ 646 __s32 max_frag; /* Maximal frag threshold */ 647 648 /* Power Management duration & timeout */ 649 __s32 min_pmp; /* Minimal PM period */ 650 __s32 max_pmp; /* Maximal PM period */ 651 __s32 min_pmt; /* Minimal PM timeout */ 652 __s32 max_pmt; /* Maximal PM timeout */ 653 __u16 pmp_flags; /* How to decode max/min PM period */ 654 __u16 pmt_flags; /* How to decode max/min PM timeout */ 655 __u16 pm_capa; /* What PM options are supported */ 656 657 /* Encoder stuff */ 658 __u16 encoding_size[IW_MAX_ENCODING_SIZES]; /* Different token sizes */ 659 __u8 num_encoding_sizes; /* Number of entry in the list */ 660 __u8 max_encoding_tokens; /* Max number of tokens */ 661 /* For drivers that need a "login/passwd" form */ 662 __u8 encoding_login_index; /* token index for login token */ 663 664 /* Transmit power */ 665 __u16 txpower_capa; /* What options are supported */ 666 __u8 num_txpower; /* Number of entries in the list */ 667 __s32 txpower[IW_MAX_TXPOWER]; /* list, in bps */ 668 669 /* Wireless Extension version info */ 670 __u8 we_version_compiled; /* Must be WIRELESS_EXT */ 671 __u8 we_version_source; /* Last update of source */ 672 673 /* Retry limits and lifetime */ 674 __u16 retry_capa; /* What retry options are supported */ 675 __u16 retry_flags; /* How to decode max/min retry limit */ 676 __u16 r_time_flags; /* How to decode max/min retry life */ 677 __s32 min_retry; /* Minimal number of retries */ 678 __s32 max_retry; /* Maximal number of retries */ 679 __s32 min_r_time; /* Minimal retry lifetime */ 680 __s32 max_r_time; /* Maximal retry lifetime */ 681 682 /* Frequency */ 683 __u16 num_channels; /* Number of channels [0; num - 1] */ 684 __u8 num_frequency; /* Number of entry in the list */ 685 struct iw_freq freq[IW_MAX_FREQUENCIES]; /* list */ 686 /* Note : this frequency list doesn't need to fit channel numbers, 687 * because each entry contain its channel index */ 688 }; 689 690 /* 691 * Private ioctl interface information 692 */ 693 694 struct iw_priv_args 695 { 696 __u32 cmd; /* Number of the ioctl to issue */ 697 __u16 set_args; /* Type and number of args */ 698 __u16 get_args; /* Type and number of args */ 699 char name[IFNAMSIZ]; /* Name of the extension */ 700 }; 701 702 /* ----------------------- WIRELESS EVENTS ----------------------- */ 703 /* 704 * Wireless events are carried through the rtnetlink socket to user 705 * space. They are encapsulated in the IFLA_WIRELESS field of 706 * a RTM_NEWLINK message. 707 */ 708 709 /* 710 * A Wireless Event. Contains basically the same data as the ioctl... 711 */ 712 struct iw_event 713 { 714 __u16 len; /* Real lenght of this stuff */ 715 __u16 cmd; /* Wireless IOCTL */ 716 union iwreq_data u; /* IOCTL fixed payload */ 717 }; 718 719 /* Size of the Event prefix (including padding and alignement junk) */ 720 #define IW_EV_LCP_LEN (sizeof(struct iw_event) - sizeof(union iwreq_data)) 721 /* Size of the various events */ 722 #define IW_EV_CHAR_LEN (IW_EV_LCP_LEN + IFNAMSIZ) 723 #define IW_EV_UINT_LEN (IW_EV_LCP_LEN + sizeof(__u32)) 724 #define IW_EV_FREQ_LEN (IW_EV_LCP_LEN + sizeof(struct iw_freq)) 725 #define IW_EV_POINT_LEN (IW_EV_LCP_LEN + sizeof(struct iw_point)) 726 #define IW_EV_PARAM_LEN (IW_EV_LCP_LEN + sizeof(struct iw_param)) 727 #define IW_EV_ADDR_LEN (IW_EV_LCP_LEN + sizeof(struct sockaddr)) 728 #define IW_EV_QUAL_LEN (IW_EV_LCP_LEN + sizeof(struct iw_quality)) 729 730 /* Note : in the case of iw_point, the extra data will come at the 731 * end of the event */ 732 733 #endif /* _LINUX_WIRELESS_H */ 734