1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/netdevice.h> 14 #include <linux/debugfs.h> 15 #include <linux/list.h> 16 #include <linux/netlink.h> 17 #include <linux/skbuff.h> 18 #include <linux/nl80211.h> 19 #include <linux/if_ether.h> 20 #include <linux/ieee80211.h> 21 #include <net/regulatory.h> 22 23 /* remove once we remove the wext stuff */ 24 #include <net/iw_handler.h> 25 #include <linux/wireless.h> 26 27 28 /** 29 * DOC: Introduction 30 * 31 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 32 * userspace and drivers, and offers some utility functionality associated 33 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 34 * by all modern wireless drivers in Linux, so that they offer a consistent 35 * API through nl80211. For backward compatibility, cfg80211 also offers 36 * wireless extensions to userspace, but hides them from drivers completely. 37 * 38 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 39 * use restrictions. 40 */ 41 42 43 /** 44 * DOC: Device registration 45 * 46 * In order for a driver to use cfg80211, it must register the hardware device 47 * with cfg80211. This happens through a number of hardware capability structs 48 * described below. 49 * 50 * The fundamental structure for each device is the 'wiphy', of which each 51 * instance describes a physical wireless device connected to the system. Each 52 * such wiphy can have zero, one, or many virtual interfaces associated with 53 * it, which need to be identified as such by pointing the network interface's 54 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 55 * the wireless part of the interface, normally this struct is embedded in the 56 * network interface's private data area. Drivers can optionally allow creating 57 * or destroying virtual interfaces on the fly, but without at least one or the 58 * ability to create some the wireless device isn't useful. 59 * 60 * Each wiphy structure contains device capability information, and also has 61 * a pointer to the various operations the driver offers. The definitions and 62 * structures here describe these capabilities in detail. 63 */ 64 65 /* 66 * wireless hardware capability structures 67 */ 68 69 /** 70 * enum ieee80211_band - supported frequency bands 71 * 72 * The bands are assigned this way because the supported 73 * bitrates differ in these bands. 74 * 75 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 76 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 77 * @IEEE80211_NUM_BANDS: number of defined bands 78 */ 79 enum ieee80211_band { 80 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 81 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 82 83 /* keep last */ 84 IEEE80211_NUM_BANDS 85 }; 86 87 /** 88 * enum ieee80211_channel_flags - channel flags 89 * 90 * Channel flags set by the regulatory control code. 91 * 92 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 93 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted 94 * on this channel. 95 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. 96 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 97 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 98 * is not permitted. 99 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 100 * is not permitted. 101 */ 102 enum ieee80211_channel_flags { 103 IEEE80211_CHAN_DISABLED = 1<<0, 104 IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, 105 IEEE80211_CHAN_NO_IBSS = 1<<2, 106 IEEE80211_CHAN_RADAR = 1<<3, 107 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 108 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 109 }; 110 111 #define IEEE80211_CHAN_NO_HT40 \ 112 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 113 114 /** 115 * struct ieee80211_channel - channel definition 116 * 117 * This structure describes a single channel for use 118 * with cfg80211. 119 * 120 * @center_freq: center frequency in MHz 121 * @hw_value: hardware-specific value for the channel 122 * @flags: channel flags from &enum ieee80211_channel_flags. 123 * @orig_flags: channel flags at registration time, used by regulatory 124 * code to support devices with additional restrictions 125 * @band: band this channel belongs to. 126 * @max_antenna_gain: maximum antenna gain in dBi 127 * @max_power: maximum transmission power (in dBm) 128 * @beacon_found: helper to regulatory code to indicate when a beacon 129 * has been found on this channel. Use regulatory_hint_found_beacon() 130 * to enable this, this is useful only on 5 GHz band. 131 * @orig_mag: internal use 132 * @orig_mpwr: internal use 133 */ 134 struct ieee80211_channel { 135 enum ieee80211_band band; 136 u16 center_freq; 137 u16 hw_value; 138 u32 flags; 139 int max_antenna_gain; 140 int max_power; 141 bool beacon_found; 142 u32 orig_flags; 143 int orig_mag, orig_mpwr; 144 }; 145 146 /** 147 * enum ieee80211_rate_flags - rate flags 148 * 149 * Hardware/specification flags for rates. These are structured 150 * in a way that allows using the same bitrate structure for 151 * different bands/PHY modes. 152 * 153 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 154 * preamble on this bitrate; only relevant in 2.4GHz band and 155 * with CCK rates. 156 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 157 * when used with 802.11a (on the 5 GHz band); filled by the 158 * core code when registering the wiphy. 159 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 160 * when used with 802.11b (on the 2.4 GHz band); filled by the 161 * core code when registering the wiphy. 162 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 163 * when used with 802.11g (on the 2.4 GHz band); filled by the 164 * core code when registering the wiphy. 165 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 166 */ 167 enum ieee80211_rate_flags { 168 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 169 IEEE80211_RATE_MANDATORY_A = 1<<1, 170 IEEE80211_RATE_MANDATORY_B = 1<<2, 171 IEEE80211_RATE_MANDATORY_G = 1<<3, 172 IEEE80211_RATE_ERP_G = 1<<4, 173 }; 174 175 /** 176 * struct ieee80211_rate - bitrate definition 177 * 178 * This structure describes a bitrate that an 802.11 PHY can 179 * operate with. The two values @hw_value and @hw_value_short 180 * are only for driver use when pointers to this structure are 181 * passed around. 182 * 183 * @flags: rate-specific flags 184 * @bitrate: bitrate in units of 100 Kbps 185 * @hw_value: driver/hardware value for this rate 186 * @hw_value_short: driver/hardware value for this rate when 187 * short preamble is used 188 */ 189 struct ieee80211_rate { 190 u32 flags; 191 u16 bitrate; 192 u16 hw_value, hw_value_short; 193 }; 194 195 /** 196 * struct ieee80211_sta_ht_cap - STA's HT capabilities 197 * 198 * This structure describes most essential parameters needed 199 * to describe 802.11n HT capabilities for an STA. 200 * 201 * @ht_supported: is HT supported by the STA 202 * @cap: HT capabilities map as described in 802.11n spec 203 * @ampdu_factor: Maximum A-MPDU length factor 204 * @ampdu_density: Minimum A-MPDU spacing 205 * @mcs: Supported MCS rates 206 */ 207 struct ieee80211_sta_ht_cap { 208 u16 cap; /* use IEEE80211_HT_CAP_ */ 209 bool ht_supported; 210 u8 ampdu_factor; 211 u8 ampdu_density; 212 struct ieee80211_mcs_info mcs; 213 }; 214 215 /** 216 * struct ieee80211_supported_band - frequency band definition 217 * 218 * This structure describes a frequency band a wiphy 219 * is able to operate in. 220 * 221 * @channels: Array of channels the hardware can operate in 222 * in this band. 223 * @band: the band this structure represents 224 * @n_channels: Number of channels in @channels 225 * @bitrates: Array of bitrates the hardware can operate with 226 * in this band. Must be sorted to give a valid "supported 227 * rates" IE, i.e. CCK rates first, then OFDM. 228 * @n_bitrates: Number of bitrates in @bitrates 229 * @ht_cap: HT capabilities in this band 230 */ 231 struct ieee80211_supported_band { 232 struct ieee80211_channel *channels; 233 struct ieee80211_rate *bitrates; 234 enum ieee80211_band band; 235 int n_channels; 236 int n_bitrates; 237 struct ieee80211_sta_ht_cap ht_cap; 238 }; 239 240 /* 241 * Wireless hardware/device configuration structures and methods 242 */ 243 244 /** 245 * DOC: Actions and configuration 246 * 247 * Each wireless device and each virtual interface offer a set of configuration 248 * operations and other actions that are invoked by userspace. Each of these 249 * actions is described in the operations structure, and the parameters these 250 * operations use are described separately. 251 * 252 * Additionally, some operations are asynchronous and expect to get status 253 * information via some functions that drivers need to call. 254 * 255 * Scanning and BSS list handling with its associated functionality is described 256 * in a separate chapter. 257 */ 258 259 /** 260 * struct vif_params - describes virtual interface parameters 261 * @use_4addr: use 4-address frames 262 */ 263 struct vif_params { 264 int use_4addr; 265 }; 266 267 /** 268 * struct key_params - key information 269 * 270 * Information about a key 271 * 272 * @key: key material 273 * @key_len: length of key material 274 * @cipher: cipher suite selector 275 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 276 * with the get_key() callback, must be in little endian, 277 * length given by @seq_len. 278 * @seq_len: length of @seq. 279 */ 280 struct key_params { 281 u8 *key; 282 u8 *seq; 283 int key_len; 284 int seq_len; 285 u32 cipher; 286 }; 287 288 /** 289 * enum survey_info_flags - survey information flags 290 * 291 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 292 * @SURVEY_INFO_IN_USE: channel is currently being used 293 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 294 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 295 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 296 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 297 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 298 * 299 * Used by the driver to indicate which info in &struct survey_info 300 * it has filled in during the get_survey(). 301 */ 302 enum survey_info_flags { 303 SURVEY_INFO_NOISE_DBM = 1<<0, 304 SURVEY_INFO_IN_USE = 1<<1, 305 SURVEY_INFO_CHANNEL_TIME = 1<<2, 306 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 307 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 308 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 309 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 310 }; 311 312 /** 313 * struct survey_info - channel survey response 314 * 315 * @channel: the channel this survey record reports, mandatory 316 * @filled: bitflag of flags from &enum survey_info_flags 317 * @noise: channel noise in dBm. This and all following fields are 318 * optional 319 * @channel_time: amount of time in ms the radio spent on the channel 320 * @channel_time_busy: amount of time the primary channel was sensed busy 321 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 322 * @channel_time_rx: amount of time the radio spent receiving data 323 * @channel_time_tx: amount of time the radio spent transmitting data 324 * 325 * Used by dump_survey() to report back per-channel survey information. 326 * 327 * This structure can later be expanded with things like 328 * channel duty cycle etc. 329 */ 330 struct survey_info { 331 struct ieee80211_channel *channel; 332 u64 channel_time; 333 u64 channel_time_busy; 334 u64 channel_time_ext_busy; 335 u64 channel_time_rx; 336 u64 channel_time_tx; 337 u32 filled; 338 s8 noise; 339 }; 340 341 /** 342 * struct beacon_parameters - beacon parameters 343 * 344 * Used to configure the beacon for an interface. 345 * 346 * @head: head portion of beacon (before TIM IE) 347 * or %NULL if not changed 348 * @tail: tail portion of beacon (after TIM IE) 349 * or %NULL if not changed 350 * @interval: beacon interval or zero if not changed 351 * @dtim_period: DTIM period or zero if not changed 352 * @head_len: length of @head 353 * @tail_len: length of @tail 354 */ 355 struct beacon_parameters { 356 u8 *head, *tail; 357 int interval, dtim_period; 358 int head_len, tail_len; 359 }; 360 361 /** 362 * enum plink_action - actions to perform in mesh peers 363 * 364 * @PLINK_ACTION_INVALID: action 0 is reserved 365 * @PLINK_ACTION_OPEN: start mesh peer link establishment 366 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 367 */ 368 enum plink_actions { 369 PLINK_ACTION_INVALID, 370 PLINK_ACTION_OPEN, 371 PLINK_ACTION_BLOCK, 372 }; 373 374 /** 375 * struct station_parameters - station parameters 376 * 377 * Used to change and create a new station. 378 * 379 * @vlan: vlan interface station should belong to 380 * @supported_rates: supported rates in IEEE 802.11 format 381 * (or NULL for no change) 382 * @supported_rates_len: number of supported rates 383 * @sta_flags_mask: station flags that changed 384 * (bitmask of BIT(NL80211_STA_FLAG_...)) 385 * @sta_flags_set: station flags values 386 * (bitmask of BIT(NL80211_STA_FLAG_...)) 387 * @listen_interval: listen interval or -1 for no change 388 * @aid: AID or zero for no change 389 * @plink_action: plink action to take 390 * @ht_capa: HT capabilities of station 391 */ 392 struct station_parameters { 393 u8 *supported_rates; 394 struct net_device *vlan; 395 u32 sta_flags_mask, sta_flags_set; 396 int listen_interval; 397 u16 aid; 398 u8 supported_rates_len; 399 u8 plink_action; 400 struct ieee80211_ht_cap *ht_capa; 401 }; 402 403 /** 404 * enum station_info_flags - station information flags 405 * 406 * Used by the driver to indicate which info in &struct station_info 407 * it has filled in during get_station() or dump_station(). 408 * 409 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 410 * @STATION_INFO_RX_BYTES: @rx_bytes filled 411 * @STATION_INFO_TX_BYTES: @tx_bytes filled 412 * @STATION_INFO_LLID: @llid filled 413 * @STATION_INFO_PLID: @plid filled 414 * @STATION_INFO_PLINK_STATE: @plink_state filled 415 * @STATION_INFO_SIGNAL: @signal filled 416 * @STATION_INFO_TX_BITRATE: @txrate fields are filled 417 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 418 * @STATION_INFO_RX_PACKETS: @rx_packets filled 419 * @STATION_INFO_TX_PACKETS: @tx_packets filled 420 * @STATION_INFO_TX_RETRIES: @tx_retries filled 421 * @STATION_INFO_TX_FAILED: @tx_failed filled 422 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 423 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 424 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled 425 */ 426 enum station_info_flags { 427 STATION_INFO_INACTIVE_TIME = 1<<0, 428 STATION_INFO_RX_BYTES = 1<<1, 429 STATION_INFO_TX_BYTES = 1<<2, 430 STATION_INFO_LLID = 1<<3, 431 STATION_INFO_PLID = 1<<4, 432 STATION_INFO_PLINK_STATE = 1<<5, 433 STATION_INFO_SIGNAL = 1<<6, 434 STATION_INFO_TX_BITRATE = 1<<7, 435 STATION_INFO_RX_PACKETS = 1<<8, 436 STATION_INFO_TX_PACKETS = 1<<9, 437 STATION_INFO_TX_RETRIES = 1<<10, 438 STATION_INFO_TX_FAILED = 1<<11, 439 STATION_INFO_RX_DROP_MISC = 1<<12, 440 STATION_INFO_SIGNAL_AVG = 1<<13, 441 STATION_INFO_RX_BITRATE = 1<<14, 442 }; 443 444 /** 445 * enum station_info_rate_flags - bitrate info flags 446 * 447 * Used by the driver to indicate the specific rate transmission 448 * type for 802.11n transmissions. 449 * 450 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 451 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 452 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 453 */ 454 enum rate_info_flags { 455 RATE_INFO_FLAGS_MCS = 1<<0, 456 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 457 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 458 }; 459 460 /** 461 * struct rate_info - bitrate information 462 * 463 * Information about a receiving or transmitting bitrate 464 * 465 * @flags: bitflag of flags from &enum rate_info_flags 466 * @mcs: mcs index if struct describes a 802.11n bitrate 467 * @legacy: bitrate in 100kbit/s for 802.11abg 468 */ 469 struct rate_info { 470 u8 flags; 471 u8 mcs; 472 u16 legacy; 473 }; 474 475 /** 476 * struct station_info - station information 477 * 478 * Station information filled by driver for get_station() and dump_station. 479 * 480 * @filled: bitflag of flags from &enum station_info_flags 481 * @inactive_time: time since last station activity (tx/rx) in milliseconds 482 * @rx_bytes: bytes received from this station 483 * @tx_bytes: bytes transmitted to this station 484 * @llid: mesh local link id 485 * @plid: mesh peer link id 486 * @plink_state: mesh peer link state 487 * @signal: signal strength of last received packet in dBm 488 * @signal_avg: signal strength average in dBm 489 * @txrate: current unicast bitrate to this station 490 * @rx_packets: packets received from this station 491 * @tx_packets: packets transmitted to this station 492 * @tx_retries: cumulative retry counts 493 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 494 * @rx_dropped_misc: Dropped for un-specified reason. 495 * @generation: generation number for nl80211 dumps. 496 * This number should increase every time the list of stations 497 * changes, i.e. when a station is added or removed, so that 498 * userspace can tell whether it got a consistent snapshot. 499 */ 500 struct station_info { 501 u32 filled; 502 u32 inactive_time; 503 u32 rx_bytes; 504 u32 tx_bytes; 505 u16 llid; 506 u16 plid; 507 u8 plink_state; 508 s8 signal; 509 s8 signal_avg; 510 struct rate_info txrate; 511 struct rate_info rxrate; 512 u32 rx_packets; 513 u32 tx_packets; 514 u32 tx_retries; 515 u32 tx_failed; 516 u32 rx_dropped_misc; 517 518 int generation; 519 }; 520 521 /** 522 * enum monitor_flags - monitor flags 523 * 524 * Monitor interface configuration flags. Note that these must be the bits 525 * according to the nl80211 flags. 526 * 527 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 528 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 529 * @MONITOR_FLAG_CONTROL: pass control frames 530 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 531 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 532 */ 533 enum monitor_flags { 534 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 535 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 536 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 537 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 538 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 539 }; 540 541 /** 542 * enum mpath_info_flags - mesh path information flags 543 * 544 * Used by the driver to indicate which info in &struct mpath_info it has filled 545 * in during get_station() or dump_station(). 546 * 547 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 548 * @MPATH_INFO_SN: @sn filled 549 * @MPATH_INFO_METRIC: @metric filled 550 * @MPATH_INFO_EXPTIME: @exptime filled 551 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 552 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 553 * @MPATH_INFO_FLAGS: @flags filled 554 */ 555 enum mpath_info_flags { 556 MPATH_INFO_FRAME_QLEN = BIT(0), 557 MPATH_INFO_SN = BIT(1), 558 MPATH_INFO_METRIC = BIT(2), 559 MPATH_INFO_EXPTIME = BIT(3), 560 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 561 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 562 MPATH_INFO_FLAGS = BIT(6), 563 }; 564 565 /** 566 * struct mpath_info - mesh path information 567 * 568 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 569 * 570 * @filled: bitfield of flags from &enum mpath_info_flags 571 * @frame_qlen: number of queued frames for this destination 572 * @sn: target sequence number 573 * @metric: metric (cost) of this mesh path 574 * @exptime: expiration time for the mesh path from now, in msecs 575 * @flags: mesh path flags 576 * @discovery_timeout: total mesh path discovery timeout, in msecs 577 * @discovery_retries: mesh path discovery retries 578 * @generation: generation number for nl80211 dumps. 579 * This number should increase every time the list of mesh paths 580 * changes, i.e. when a station is added or removed, so that 581 * userspace can tell whether it got a consistent snapshot. 582 */ 583 struct mpath_info { 584 u32 filled; 585 u32 frame_qlen; 586 u32 sn; 587 u32 metric; 588 u32 exptime; 589 u32 discovery_timeout; 590 u8 discovery_retries; 591 u8 flags; 592 593 int generation; 594 }; 595 596 /** 597 * struct bss_parameters - BSS parameters 598 * 599 * Used to change BSS parameters (mainly for AP mode). 600 * 601 * @use_cts_prot: Whether to use CTS protection 602 * (0 = no, 1 = yes, -1 = do not change) 603 * @use_short_preamble: Whether the use of short preambles is allowed 604 * (0 = no, 1 = yes, -1 = do not change) 605 * @use_short_slot_time: Whether the use of short slot time is allowed 606 * (0 = no, 1 = yes, -1 = do not change) 607 * @basic_rates: basic rates in IEEE 802.11 format 608 * (or NULL for no change) 609 * @basic_rates_len: number of basic rates 610 * @ap_isolate: do not forward packets between connected stations 611 * @ht_opmode: HT Operation mode 612 * (u16 = opmode, -1 = do not change) 613 */ 614 struct bss_parameters { 615 int use_cts_prot; 616 int use_short_preamble; 617 int use_short_slot_time; 618 u8 *basic_rates; 619 u8 basic_rates_len; 620 int ap_isolate; 621 int ht_opmode; 622 }; 623 624 /* 625 * struct mesh_config - 802.11s mesh configuration 626 * 627 * These parameters can be changed while the mesh is active. 628 */ 629 struct mesh_config { 630 /* Timeouts in ms */ 631 /* Mesh plink management parameters */ 632 u16 dot11MeshRetryTimeout; 633 u16 dot11MeshConfirmTimeout; 634 u16 dot11MeshHoldingTimeout; 635 u16 dot11MeshMaxPeerLinks; 636 u8 dot11MeshMaxRetries; 637 u8 dot11MeshTTL; 638 /* ttl used in path selection information elements */ 639 u8 element_ttl; 640 bool auto_open_plinks; 641 /* HWMP parameters */ 642 u8 dot11MeshHWMPmaxPREQretries; 643 u32 path_refresh_time; 644 u16 min_discovery_timeout; 645 u32 dot11MeshHWMPactivePathTimeout; 646 u16 dot11MeshHWMPpreqMinInterval; 647 u16 dot11MeshHWMPnetDiameterTraversalTime; 648 u8 dot11MeshHWMPRootMode; 649 }; 650 651 /** 652 * struct mesh_setup - 802.11s mesh setup configuration 653 * @mesh_id: the mesh ID 654 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 655 * @path_sel_proto: which path selection protocol to use 656 * @path_metric: which metric to use 657 * @vendor_ie: vendor information elements (optional) 658 * @vendor_ie_len: length of vendor information elements 659 * 660 * These parameters are fixed when the mesh is created. 661 */ 662 struct mesh_setup { 663 const u8 *mesh_id; 664 u8 mesh_id_len; 665 u8 path_sel_proto; 666 u8 path_metric; 667 const u8 *vendor_ie; 668 u8 vendor_ie_len; 669 }; 670 671 /** 672 * struct ieee80211_txq_params - TX queue parameters 673 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 674 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 675 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 676 * 1..32767] 677 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 678 * 1..32767] 679 * @aifs: Arbitration interframe space [0..255] 680 */ 681 struct ieee80211_txq_params { 682 enum nl80211_txq_q queue; 683 u16 txop; 684 u16 cwmin; 685 u16 cwmax; 686 u8 aifs; 687 }; 688 689 /* from net/wireless.h */ 690 struct wiphy; 691 692 /** 693 * DOC: Scanning and BSS list handling 694 * 695 * The scanning process itself is fairly simple, but cfg80211 offers quite 696 * a bit of helper functionality. To start a scan, the scan operation will 697 * be invoked with a scan definition. This scan definition contains the 698 * channels to scan, and the SSIDs to send probe requests for (including the 699 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 700 * probe. Additionally, a scan request may contain extra information elements 701 * that should be added to the probe request. The IEs are guaranteed to be 702 * well-formed, and will not exceed the maximum length the driver advertised 703 * in the wiphy structure. 704 * 705 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 706 * it is responsible for maintaining the BSS list; the driver should not 707 * maintain a list itself. For this notification, various functions exist. 708 * 709 * Since drivers do not maintain a BSS list, there are also a number of 710 * functions to search for a BSS and obtain information about it from the 711 * BSS structure cfg80211 maintains. The BSS list is also made available 712 * to userspace. 713 */ 714 715 /** 716 * struct cfg80211_ssid - SSID description 717 * @ssid: the SSID 718 * @ssid_len: length of the ssid 719 */ 720 struct cfg80211_ssid { 721 u8 ssid[IEEE80211_MAX_SSID_LEN]; 722 u8 ssid_len; 723 }; 724 725 /** 726 * struct cfg80211_scan_request - scan request description 727 * 728 * @ssids: SSIDs to scan for (active scan only) 729 * @n_ssids: number of SSIDs 730 * @channels: channels to scan on. 731 * @n_channels: total number of channels to scan 732 * @ie: optional information element(s) to add into Probe Request or %NULL 733 * @ie_len: length of ie in octets 734 * @wiphy: the wiphy this was for 735 * @dev: the interface 736 * @aborted: (internal) scan request was notified as aborted 737 */ 738 struct cfg80211_scan_request { 739 struct cfg80211_ssid *ssids; 740 int n_ssids; 741 u32 n_channels; 742 const u8 *ie; 743 size_t ie_len; 744 745 /* internal */ 746 struct wiphy *wiphy; 747 struct net_device *dev; 748 bool aborted; 749 750 /* keep last */ 751 struct ieee80211_channel *channels[0]; 752 }; 753 754 /** 755 * enum cfg80211_signal_type - signal type 756 * 757 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 758 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 759 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 760 */ 761 enum cfg80211_signal_type { 762 CFG80211_SIGNAL_TYPE_NONE, 763 CFG80211_SIGNAL_TYPE_MBM, 764 CFG80211_SIGNAL_TYPE_UNSPEC, 765 }; 766 767 /** 768 * struct cfg80211_bss - BSS description 769 * 770 * This structure describes a BSS (which may also be a mesh network) 771 * for use in scan results and similar. 772 * 773 * @channel: channel this BSS is on 774 * @bssid: BSSID of the BSS 775 * @tsf: timestamp of last received update 776 * @beacon_interval: the beacon interval as from the frame 777 * @capability: the capability field in host byte order 778 * @information_elements: the information elements (Note that there 779 * is no guarantee that these are well-formed!); this is a pointer to 780 * either the beacon_ies or proberesp_ies depending on whether Probe 781 * Response frame has been received 782 * @len_information_elements: total length of the information elements 783 * @beacon_ies: the information elements from the last Beacon frame 784 * @len_beacon_ies: total length of the beacon_ies 785 * @proberesp_ies: the information elements from the last Probe Response frame 786 * @len_proberesp_ies: total length of the proberesp_ies 787 * @signal: signal strength value (type depends on the wiphy's signal_type) 788 * @free_priv: function pointer to free private data 789 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 790 */ 791 struct cfg80211_bss { 792 struct ieee80211_channel *channel; 793 794 u8 bssid[ETH_ALEN]; 795 u64 tsf; 796 u16 beacon_interval; 797 u16 capability; 798 u8 *information_elements; 799 size_t len_information_elements; 800 u8 *beacon_ies; 801 size_t len_beacon_ies; 802 u8 *proberesp_ies; 803 size_t len_proberesp_ies; 804 805 s32 signal; 806 807 void (*free_priv)(struct cfg80211_bss *bss); 808 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 809 }; 810 811 /** 812 * ieee80211_bss_get_ie - find IE with given ID 813 * @bss: the bss to search 814 * @ie: the IE ID 815 * Returns %NULL if not found. 816 */ 817 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 818 819 820 /** 821 * struct cfg80211_crypto_settings - Crypto settings 822 * @wpa_versions: indicates which, if any, WPA versions are enabled 823 * (from enum nl80211_wpa_versions) 824 * @cipher_group: group key cipher suite (or 0 if unset) 825 * @n_ciphers_pairwise: number of AP supported unicast ciphers 826 * @ciphers_pairwise: unicast key cipher suites 827 * @n_akm_suites: number of AKM suites 828 * @akm_suites: AKM suites 829 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 830 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 831 * required to assume that the port is unauthorized until authorized by 832 * user space. Otherwise, port is marked authorized by default. 833 * @control_port_ethertype: the control port protocol that should be 834 * allowed through even on unauthorized ports 835 * @control_port_no_encrypt: TRUE to prevent encryption of control port 836 * protocol frames. 837 */ 838 struct cfg80211_crypto_settings { 839 u32 wpa_versions; 840 u32 cipher_group; 841 int n_ciphers_pairwise; 842 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 843 int n_akm_suites; 844 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 845 bool control_port; 846 __be16 control_port_ethertype; 847 bool control_port_no_encrypt; 848 }; 849 850 /** 851 * struct cfg80211_auth_request - Authentication request data 852 * 853 * This structure provides information needed to complete IEEE 802.11 854 * authentication. 855 * 856 * @bss: The BSS to authenticate with. 857 * @auth_type: Authentication type (algorithm) 858 * @ie: Extra IEs to add to Authentication frame or %NULL 859 * @ie_len: Length of ie buffer in octets 860 * @key_len: length of WEP key for shared key authentication 861 * @key_idx: index of WEP key for shared key authentication 862 * @key: WEP key for shared key authentication 863 * @local_state_change: This is a request for a local state only, i.e., no 864 * Authentication frame is to be transmitted and authentication state is 865 * to be changed without having to wait for a response from the peer STA 866 * (AP). 867 */ 868 struct cfg80211_auth_request { 869 struct cfg80211_bss *bss; 870 const u8 *ie; 871 size_t ie_len; 872 enum nl80211_auth_type auth_type; 873 const u8 *key; 874 u8 key_len, key_idx; 875 bool local_state_change; 876 }; 877 878 /** 879 * struct cfg80211_assoc_request - (Re)Association request data 880 * 881 * This structure provides information needed to complete IEEE 802.11 882 * (re)association. 883 * @bss: The BSS to associate with. 884 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 885 * @ie_len: Length of ie buffer in octets 886 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 887 * @crypto: crypto settings 888 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 889 */ 890 struct cfg80211_assoc_request { 891 struct cfg80211_bss *bss; 892 const u8 *ie, *prev_bssid; 893 size_t ie_len; 894 struct cfg80211_crypto_settings crypto; 895 bool use_mfp; 896 }; 897 898 /** 899 * struct cfg80211_deauth_request - Deauthentication request data 900 * 901 * This structure provides information needed to complete IEEE 802.11 902 * deauthentication. 903 * 904 * @bss: the BSS to deauthenticate from 905 * @ie: Extra IEs to add to Deauthentication frame or %NULL 906 * @ie_len: Length of ie buffer in octets 907 * @reason_code: The reason code for the deauthentication 908 * @local_state_change: This is a request for a local state only, i.e., no 909 * Deauthentication frame is to be transmitted. 910 */ 911 struct cfg80211_deauth_request { 912 struct cfg80211_bss *bss; 913 const u8 *ie; 914 size_t ie_len; 915 u16 reason_code; 916 bool local_state_change; 917 }; 918 919 /** 920 * struct cfg80211_disassoc_request - Disassociation request data 921 * 922 * This structure provides information needed to complete IEEE 802.11 923 * disassocation. 924 * 925 * @bss: the BSS to disassociate from 926 * @ie: Extra IEs to add to Disassociation frame or %NULL 927 * @ie_len: Length of ie buffer in octets 928 * @reason_code: The reason code for the disassociation 929 * @local_state_change: This is a request for a local state only, i.e., no 930 * Disassociation frame is to be transmitted. 931 */ 932 struct cfg80211_disassoc_request { 933 struct cfg80211_bss *bss; 934 const u8 *ie; 935 size_t ie_len; 936 u16 reason_code; 937 bool local_state_change; 938 }; 939 940 /** 941 * struct cfg80211_ibss_params - IBSS parameters 942 * 943 * This structure defines the IBSS parameters for the join_ibss() 944 * method. 945 * 946 * @ssid: The SSID, will always be non-null. 947 * @ssid_len: The length of the SSID, will always be non-zero. 948 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 949 * search for IBSSs with a different BSSID. 950 * @channel: The channel to use if no IBSS can be found to join. 951 * @channel_fixed: The channel should be fixed -- do not search for 952 * IBSSs to join on other channels. 953 * @ie: information element(s) to include in the beacon 954 * @ie_len: length of that 955 * @beacon_interval: beacon interval to use 956 * @privacy: this is a protected network, keys will be configured 957 * after joining 958 * @basic_rates: bitmap of basic rates to use when creating the IBSS 959 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 960 */ 961 struct cfg80211_ibss_params { 962 u8 *ssid; 963 u8 *bssid; 964 struct ieee80211_channel *channel; 965 u8 *ie; 966 u8 ssid_len, ie_len; 967 u16 beacon_interval; 968 u32 basic_rates; 969 bool channel_fixed; 970 bool privacy; 971 int mcast_rate[IEEE80211_NUM_BANDS]; 972 }; 973 974 /** 975 * struct cfg80211_connect_params - Connection parameters 976 * 977 * This structure provides information needed to complete IEEE 802.11 978 * authentication and association. 979 * 980 * @channel: The channel to use or %NULL if not specified (auto-select based 981 * on scan results) 982 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 983 * results) 984 * @ssid: SSID 985 * @ssid_len: Length of ssid in octets 986 * @auth_type: Authentication type (algorithm) 987 * @ie: IEs for association request 988 * @ie_len: Length of assoc_ie in octets 989 * @privacy: indicates whether privacy-enabled APs should be used 990 * @crypto: crypto settings 991 * @key_len: length of WEP key for shared key authentication 992 * @key_idx: index of WEP key for shared key authentication 993 * @key: WEP key for shared key authentication 994 */ 995 struct cfg80211_connect_params { 996 struct ieee80211_channel *channel; 997 u8 *bssid; 998 u8 *ssid; 999 size_t ssid_len; 1000 enum nl80211_auth_type auth_type; 1001 u8 *ie; 1002 size_t ie_len; 1003 bool privacy; 1004 struct cfg80211_crypto_settings crypto; 1005 const u8 *key; 1006 u8 key_len, key_idx; 1007 }; 1008 1009 /** 1010 * enum wiphy_params_flags - set_wiphy_params bitfield values 1011 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1012 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1013 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1014 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1015 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1016 */ 1017 enum wiphy_params_flags { 1018 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1019 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1020 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1021 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1022 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1023 }; 1024 1025 /* 1026 * cfg80211_bitrate_mask - masks for bitrate control 1027 */ 1028 struct cfg80211_bitrate_mask { 1029 struct { 1030 u32 legacy; 1031 /* TODO: add support for masking MCS rates; e.g.: */ 1032 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 1033 } control[IEEE80211_NUM_BANDS]; 1034 }; 1035 /** 1036 * struct cfg80211_pmksa - PMK Security Association 1037 * 1038 * This structure is passed to the set/del_pmksa() method for PMKSA 1039 * caching. 1040 * 1041 * @bssid: The AP's BSSID. 1042 * @pmkid: The PMK material itself. 1043 */ 1044 struct cfg80211_pmksa { 1045 u8 *bssid; 1046 u8 *pmkid; 1047 }; 1048 1049 /** 1050 * struct cfg80211_ops - backend description for wireless configuration 1051 * 1052 * This struct is registered by fullmac card drivers and/or wireless stacks 1053 * in order to handle configuration requests on their interfaces. 1054 * 1055 * All callbacks except where otherwise noted should return 0 1056 * on success or a negative error code. 1057 * 1058 * All operations are currently invoked under rtnl for consistency with the 1059 * wireless extensions but this is subject to reevaluation as soon as this 1060 * code is used more widely and we have a first user without wext. 1061 * 1062 * @suspend: wiphy device needs to be suspended 1063 * @resume: wiphy device needs to be resumed 1064 * 1065 * @add_virtual_intf: create a new virtual interface with the given name, 1066 * must set the struct wireless_dev's iftype. Beware: You must create 1067 * the new netdev in the wiphy's network namespace! Returns the netdev, 1068 * or an ERR_PTR. 1069 * 1070 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1071 * 1072 * @change_virtual_intf: change type/configuration of virtual interface, 1073 * keep the struct wireless_dev's iftype updated. 1074 * 1075 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1076 * when adding a group key. 1077 * 1078 * @get_key: get information about the key with the given parameters. 1079 * @mac_addr will be %NULL when requesting information for a group 1080 * key. All pointers given to the @callback function need not be valid 1081 * after it returns. This function should return an error if it is 1082 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1083 * 1084 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1085 * and @key_index, return -ENOENT if the key doesn't exist. 1086 * 1087 * @set_default_key: set the default key on an interface 1088 * 1089 * @set_default_mgmt_key: set the default management frame key on an interface 1090 * 1091 * @add_beacon: Add a beacon with given parameters, @head, @interval 1092 * and @dtim_period will be valid, @tail is optional. 1093 * @set_beacon: Change the beacon parameters for an access point mode 1094 * interface. This should reject the call when no beacon has been 1095 * configured. 1096 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1097 * 1098 * @add_station: Add a new station. 1099 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1100 * @change_station: Modify a given station. 1101 * @get_station: get station information for the station identified by @mac 1102 * @dump_station: dump station callback -- resume dump at index @idx 1103 * 1104 * @add_mpath: add a fixed mesh path 1105 * @del_mpath: delete a given mesh path 1106 * @change_mpath: change a given mesh path 1107 * @get_mpath: get a mesh path for the given parameters 1108 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1109 * @join_mesh: join the mesh network with the specified parameters 1110 * @leave_mesh: leave the current mesh network 1111 * 1112 * @get_mesh_config: Get the current mesh configuration 1113 * 1114 * @update_mesh_config: Update mesh parameters on a running mesh. 1115 * The mask is a bitfield which tells us which parameters to 1116 * set, and which to leave alone. 1117 * 1118 * @change_bss: Modify parameters for a given BSS. 1119 * 1120 * @set_txq_params: Set TX queue parameters 1121 * 1122 * @set_channel: Set channel for a given wireless interface. Some devices 1123 * may support multi-channel operation (by channel hopping) so cfg80211 1124 * doesn't verify much. Note, however, that the passed netdev may be 1125 * %NULL as well if the user requested changing the channel for the 1126 * device itself, or for a monitor interface. 1127 * 1128 * @scan: Request to do a scan. If returning zero, the scan request is given 1129 * the driver, and will be valid until passed to cfg80211_scan_done(). 1130 * For scan results, call cfg80211_inform_bss(); you can call this outside 1131 * the scan/scan_done bracket too. 1132 * 1133 * @auth: Request to authenticate with the specified peer 1134 * @assoc: Request to (re)associate with the specified peer 1135 * @deauth: Request to deauthenticate from the specified peer 1136 * @disassoc: Request to disassociate from the specified peer 1137 * 1138 * @connect: Connect to the ESS with the specified parameters. When connected, 1139 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1140 * If the connection fails for some reason, call cfg80211_connect_result() 1141 * with the status from the AP. 1142 * @disconnect: Disconnect from the BSS/ESS. 1143 * 1144 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1145 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1146 * to a merge. 1147 * @leave_ibss: Leave the IBSS. 1148 * 1149 * @set_wiphy_params: Notify that wiphy parameters have changed; 1150 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1151 * have changed. The actual parameter values are available in 1152 * struct wiphy. If returning an error, no value should be changed. 1153 * 1154 * @set_tx_power: set the transmit power according to the parameters 1155 * @get_tx_power: store the current TX power into the dbm variable; 1156 * return 0 if successful 1157 * 1158 * @set_wds_peer: set the WDS peer for a WDS interface 1159 * 1160 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1161 * functions to adjust rfkill hw state 1162 * 1163 * @dump_survey: get site survey information. 1164 * 1165 * @remain_on_channel: Request the driver to remain awake on the specified 1166 * channel for the specified duration to complete an off-channel 1167 * operation (e.g., public action frame exchange). When the driver is 1168 * ready on the requested channel, it must indicate this with an event 1169 * notification by calling cfg80211_ready_on_channel(). 1170 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1171 * This allows the operation to be terminated prior to timeout based on 1172 * the duration value. 1173 * @mgmt_tx: Transmit a management frame. 1174 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1175 * frame on another channel 1176 * 1177 * @testmode_cmd: run a test mode command 1178 * 1179 * @set_bitrate_mask: set the bitrate mask configuration 1180 * 1181 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1182 * devices running firmwares capable of generating the (re) association 1183 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1184 * @del_pmksa: Delete a cached PMKID. 1185 * @flush_pmksa: Flush all cached PMKIDs. 1186 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1187 * allows the driver to adjust the dynamic ps timeout value. 1188 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1189 * 1190 * @mgmt_frame_register: Notify driver that a management frame type was 1191 * registered. Note that this callback may not sleep, and cannot run 1192 * concurrently with itself. 1193 * 1194 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1195 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1196 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1197 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1198 * 1199 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1200 * 1201 * @set_ringparam: Set tx and rx ring sizes. 1202 * 1203 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1204 */ 1205 struct cfg80211_ops { 1206 int (*suspend)(struct wiphy *wiphy); 1207 int (*resume)(struct wiphy *wiphy); 1208 1209 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1210 char *name, 1211 enum nl80211_iftype type, 1212 u32 *flags, 1213 struct vif_params *params); 1214 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1215 int (*change_virtual_intf)(struct wiphy *wiphy, 1216 struct net_device *dev, 1217 enum nl80211_iftype type, u32 *flags, 1218 struct vif_params *params); 1219 1220 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1221 u8 key_index, bool pairwise, const u8 *mac_addr, 1222 struct key_params *params); 1223 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1224 u8 key_index, bool pairwise, const u8 *mac_addr, 1225 void *cookie, 1226 void (*callback)(void *cookie, struct key_params*)); 1227 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1228 u8 key_index, bool pairwise, const u8 *mac_addr); 1229 int (*set_default_key)(struct wiphy *wiphy, 1230 struct net_device *netdev, 1231 u8 key_index, bool unicast, bool multicast); 1232 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1233 struct net_device *netdev, 1234 u8 key_index); 1235 1236 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1237 struct beacon_parameters *info); 1238 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1239 struct beacon_parameters *info); 1240 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1241 1242 1243 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1244 u8 *mac, struct station_parameters *params); 1245 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1246 u8 *mac); 1247 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1248 u8 *mac, struct station_parameters *params); 1249 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1250 u8 *mac, struct station_info *sinfo); 1251 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1252 int idx, u8 *mac, struct station_info *sinfo); 1253 1254 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1255 u8 *dst, u8 *next_hop); 1256 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1257 u8 *dst); 1258 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1259 u8 *dst, u8 *next_hop); 1260 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1261 u8 *dst, u8 *next_hop, 1262 struct mpath_info *pinfo); 1263 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1264 int idx, u8 *dst, u8 *next_hop, 1265 struct mpath_info *pinfo); 1266 int (*get_mesh_config)(struct wiphy *wiphy, 1267 struct net_device *dev, 1268 struct mesh_config *conf); 1269 int (*update_mesh_config)(struct wiphy *wiphy, 1270 struct net_device *dev, u32 mask, 1271 const struct mesh_config *nconf); 1272 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1273 const struct mesh_config *conf, 1274 const struct mesh_setup *setup); 1275 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1276 1277 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1278 struct bss_parameters *params); 1279 1280 int (*set_txq_params)(struct wiphy *wiphy, 1281 struct ieee80211_txq_params *params); 1282 1283 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1284 struct ieee80211_channel *chan, 1285 enum nl80211_channel_type channel_type); 1286 1287 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1288 struct cfg80211_scan_request *request); 1289 1290 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1291 struct cfg80211_auth_request *req); 1292 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1293 struct cfg80211_assoc_request *req); 1294 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1295 struct cfg80211_deauth_request *req, 1296 void *cookie); 1297 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1298 struct cfg80211_disassoc_request *req, 1299 void *cookie); 1300 1301 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1302 struct cfg80211_connect_params *sme); 1303 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1304 u16 reason_code); 1305 1306 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1307 struct cfg80211_ibss_params *params); 1308 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1309 1310 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1311 1312 int (*set_tx_power)(struct wiphy *wiphy, 1313 enum nl80211_tx_power_setting type, int mbm); 1314 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1315 1316 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1317 const u8 *addr); 1318 1319 void (*rfkill_poll)(struct wiphy *wiphy); 1320 1321 #ifdef CONFIG_NL80211_TESTMODE 1322 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1323 #endif 1324 1325 int (*set_bitrate_mask)(struct wiphy *wiphy, 1326 struct net_device *dev, 1327 const u8 *peer, 1328 const struct cfg80211_bitrate_mask *mask); 1329 1330 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1331 int idx, struct survey_info *info); 1332 1333 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1334 struct cfg80211_pmksa *pmksa); 1335 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1336 struct cfg80211_pmksa *pmksa); 1337 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1338 1339 int (*remain_on_channel)(struct wiphy *wiphy, 1340 struct net_device *dev, 1341 struct ieee80211_channel *chan, 1342 enum nl80211_channel_type channel_type, 1343 unsigned int duration, 1344 u64 *cookie); 1345 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1346 struct net_device *dev, 1347 u64 cookie); 1348 1349 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1350 struct ieee80211_channel *chan, bool offchan, 1351 enum nl80211_channel_type channel_type, 1352 bool channel_type_valid, unsigned int wait, 1353 const u8 *buf, size_t len, u64 *cookie); 1354 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1355 struct net_device *dev, 1356 u64 cookie); 1357 1358 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1359 bool enabled, int timeout); 1360 1361 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1362 struct net_device *dev, 1363 s32 rssi_thold, u32 rssi_hyst); 1364 1365 void (*mgmt_frame_register)(struct wiphy *wiphy, 1366 struct net_device *dev, 1367 u16 frame_type, bool reg); 1368 1369 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1370 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1371 1372 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 1373 void (*get_ringparam)(struct wiphy *wiphy, 1374 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1375 }; 1376 1377 /* 1378 * wireless hardware and networking interfaces structures 1379 * and registration/helper functions 1380 */ 1381 1382 /** 1383 * enum wiphy_flags - wiphy capability flags 1384 * 1385 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1386 * has its own custom regulatory domain and cannot identify the 1387 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1388 * we will disregard the first regulatory hint (when the 1389 * initiator is %REGDOM_SET_BY_CORE). 1390 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1391 * ignore regulatory domain settings until it gets its own regulatory 1392 * domain via its regulatory_hint() unless the regulatory hint is 1393 * from a country IE. After its gets its own regulatory domain it will 1394 * only allow further regulatory domain settings to further enhance 1395 * compliance. For example if channel 13 and 14 are disabled by this 1396 * regulatory domain no user regulatory domain can enable these channels 1397 * at a later time. This can be used for devices which do not have 1398 * calibration information guaranteed for frequencies or settings 1399 * outside of its regulatory domain. 1400 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1401 * that passive scan flags and beaconing flags may not be lifted by 1402 * cfg80211 due to regulatory beacon hints. For more information on beacon 1403 * hints read the documenation for regulatory_hint_found_beacon() 1404 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1405 * wiphy at all 1406 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1407 * by default -- this flag will be set depending on the kernel's default 1408 * on wiphy_new(), but can be changed by the driver if it has a good 1409 * reason to override the default 1410 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1411 * on a VLAN interface) 1412 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1413 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1414 * control port protocol ethertype. The device also honours the 1415 * control_port_no_encrypt flag. 1416 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1417 * @WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS: The device supports separate 1418 * unicast and multicast TX keys. 1419 */ 1420 enum wiphy_flags { 1421 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1422 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1423 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1424 WIPHY_FLAG_NETNS_OK = BIT(3), 1425 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1426 WIPHY_FLAG_4ADDR_AP = BIT(5), 1427 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1428 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1429 WIPHY_FLAG_IBSS_RSN = BIT(8), 1430 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS= BIT(9), 1431 }; 1432 1433 struct mac_address { 1434 u8 addr[ETH_ALEN]; 1435 }; 1436 1437 struct ieee80211_txrx_stypes { 1438 u16 tx, rx; 1439 }; 1440 1441 /** 1442 * struct wiphy - wireless hardware description 1443 * @reg_notifier: the driver's regulatory notification callback, 1444 * note that if your driver uses wiphy_apply_custom_regulatory() 1445 * the reg_notifier's request can be passed as NULL 1446 * @regd: the driver's regulatory domain, if one was requested via 1447 * the regulatory_hint() API. This can be used by the driver 1448 * on the reg_notifier() if it chooses to ignore future 1449 * regulatory domain changes caused by other drivers. 1450 * @signal_type: signal type reported in &struct cfg80211_bss. 1451 * @cipher_suites: supported cipher suites 1452 * @n_cipher_suites: number of supported cipher suites 1453 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1454 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1455 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1456 * -1 = fragmentation disabled, only odd values >= 256 used 1457 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1458 * @_net: the network namespace this wiphy currently lives in 1459 * @perm_addr: permanent MAC address of this device 1460 * @addr_mask: If the device supports multiple MAC addresses by masking, 1461 * set this to a mask with variable bits set to 1, e.g. if the last 1462 * four bits are variable then set it to 00:...:00:0f. The actual 1463 * variable bits shall be determined by the interfaces added, with 1464 * interfaces not matching the mask being rejected to be brought up. 1465 * @n_addresses: number of addresses in @addresses. 1466 * @addresses: If the device has more than one address, set this pointer 1467 * to a list of addresses (6 bytes each). The first one will be used 1468 * by default for perm_addr. In this case, the mask should be set to 1469 * all-zeroes. In this case it is assumed that the device can handle 1470 * the same number of arbitrary MAC addresses. 1471 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1472 * automatically on wiphy renames 1473 * @dev: (virtual) struct device for this wiphy 1474 * @wext: wireless extension handlers 1475 * @priv: driver private data (sized according to wiphy_new() parameter) 1476 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1477 * must be set by driver 1478 * @flags: wiphy flags, see &enum wiphy_flags 1479 * @bss_priv_size: each BSS struct has private data allocated with it, 1480 * this variable determines its size 1481 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1482 * any given scan 1483 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1484 * add to probe request frames transmitted during a scan, must not 1485 * include fixed IEs like supported rates 1486 * @coverage_class: current coverage class 1487 * @fw_version: firmware version for ethtool reporting 1488 * @hw_version: hardware version for ethtool reporting 1489 * @max_num_pmkids: maximum number of PMKIDs supported by device 1490 * @privid: a pointer that drivers can use to identify if an arbitrary 1491 * wiphy is theirs, e.g. in global notifiers 1492 * @bands: information about bands/channels supported by this device 1493 * 1494 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1495 * transmitted through nl80211, points to an array indexed by interface 1496 * type 1497 * 1498 * @available_antennas_tx: bitmap of antennas which are available to be 1499 * configured as TX antennas. Antenna configuration commands will be 1500 * rejected unless this or @available_antennas_rx is set. 1501 * 1502 * @available_antennas_rx: bitmap of antennas which are available to be 1503 * configured as RX antennas. Antenna configuration commands will be 1504 * rejected unless this or @available_antennas_tx is set. 1505 * 1506 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 1507 * may request, if implemented. 1508 */ 1509 struct wiphy { 1510 /* assign these fields before you register the wiphy */ 1511 1512 /* permanent MAC address(es) */ 1513 u8 perm_addr[ETH_ALEN]; 1514 u8 addr_mask[ETH_ALEN]; 1515 1516 struct mac_address *addresses; 1517 1518 const struct ieee80211_txrx_stypes *mgmt_stypes; 1519 1520 u16 n_addresses; 1521 1522 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 1523 u16 interface_modes; 1524 1525 u32 flags; 1526 1527 enum cfg80211_signal_type signal_type; 1528 1529 int bss_priv_size; 1530 u8 max_scan_ssids; 1531 u16 max_scan_ie_len; 1532 1533 int n_cipher_suites; 1534 const u32 *cipher_suites; 1535 1536 u8 retry_short; 1537 u8 retry_long; 1538 u32 frag_threshold; 1539 u32 rts_threshold; 1540 u8 coverage_class; 1541 1542 char fw_version[ETHTOOL_BUSINFO_LEN]; 1543 u32 hw_version; 1544 1545 u16 max_remain_on_channel_duration; 1546 1547 u8 max_num_pmkids; 1548 1549 u32 available_antennas_tx; 1550 u32 available_antennas_rx; 1551 1552 /* If multiple wiphys are registered and you're handed e.g. 1553 * a regular netdev with assigned ieee80211_ptr, you won't 1554 * know whether it points to a wiphy your driver has registered 1555 * or not. Assign this to something global to your driver to 1556 * help determine whether you own this wiphy or not. */ 1557 const void *privid; 1558 1559 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 1560 1561 /* Lets us get back the wiphy on the callback */ 1562 int (*reg_notifier)(struct wiphy *wiphy, 1563 struct regulatory_request *request); 1564 1565 /* fields below are read-only, assigned by cfg80211 */ 1566 1567 const struct ieee80211_regdomain *regd; 1568 1569 /* the item in /sys/class/ieee80211/ points to this, 1570 * you need use set_wiphy_dev() (see below) */ 1571 struct device dev; 1572 1573 /* dir in debugfs: ieee80211/<wiphyname> */ 1574 struct dentry *debugfsdir; 1575 1576 #ifdef CONFIG_NET_NS 1577 /* the network namespace this phy lives in currently */ 1578 struct net *_net; 1579 #endif 1580 1581 #ifdef CONFIG_CFG80211_WEXT 1582 const struct iw_handler_def *wext; 1583 #endif 1584 1585 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 1586 }; 1587 1588 static inline struct net *wiphy_net(struct wiphy *wiphy) 1589 { 1590 return read_pnet(&wiphy->_net); 1591 } 1592 1593 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 1594 { 1595 write_pnet(&wiphy->_net, net); 1596 } 1597 1598 /** 1599 * wiphy_priv - return priv from wiphy 1600 * 1601 * @wiphy: the wiphy whose priv pointer to return 1602 */ 1603 static inline void *wiphy_priv(struct wiphy *wiphy) 1604 { 1605 BUG_ON(!wiphy); 1606 return &wiphy->priv; 1607 } 1608 1609 /** 1610 * priv_to_wiphy - return the wiphy containing the priv 1611 * 1612 * @priv: a pointer previously returned by wiphy_priv 1613 */ 1614 static inline struct wiphy *priv_to_wiphy(void *priv) 1615 { 1616 BUG_ON(!priv); 1617 return container_of(priv, struct wiphy, priv); 1618 } 1619 1620 /** 1621 * set_wiphy_dev - set device pointer for wiphy 1622 * 1623 * @wiphy: The wiphy whose device to bind 1624 * @dev: The device to parent it to 1625 */ 1626 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 1627 { 1628 wiphy->dev.parent = dev; 1629 } 1630 1631 /** 1632 * wiphy_dev - get wiphy dev pointer 1633 * 1634 * @wiphy: The wiphy whose device struct to look up 1635 */ 1636 static inline struct device *wiphy_dev(struct wiphy *wiphy) 1637 { 1638 return wiphy->dev.parent; 1639 } 1640 1641 /** 1642 * wiphy_name - get wiphy name 1643 * 1644 * @wiphy: The wiphy whose name to return 1645 */ 1646 static inline const char *wiphy_name(const struct wiphy *wiphy) 1647 { 1648 return dev_name(&wiphy->dev); 1649 } 1650 1651 /** 1652 * wiphy_new - create a new wiphy for use with cfg80211 1653 * 1654 * @ops: The configuration operations for this device 1655 * @sizeof_priv: The size of the private area to allocate 1656 * 1657 * Create a new wiphy and associate the given operations with it. 1658 * @sizeof_priv bytes are allocated for private use. 1659 * 1660 * The returned pointer must be assigned to each netdev's 1661 * ieee80211_ptr for proper operation. 1662 */ 1663 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 1664 1665 /** 1666 * wiphy_register - register a wiphy with cfg80211 1667 * 1668 * @wiphy: The wiphy to register. 1669 * 1670 * Returns a non-negative wiphy index or a negative error code. 1671 */ 1672 extern int wiphy_register(struct wiphy *wiphy); 1673 1674 /** 1675 * wiphy_unregister - deregister a wiphy from cfg80211 1676 * 1677 * @wiphy: The wiphy to unregister. 1678 * 1679 * After this call, no more requests can be made with this priv 1680 * pointer, but the call may sleep to wait for an outstanding 1681 * request that is being handled. 1682 */ 1683 extern void wiphy_unregister(struct wiphy *wiphy); 1684 1685 /** 1686 * wiphy_free - free wiphy 1687 * 1688 * @wiphy: The wiphy to free 1689 */ 1690 extern void wiphy_free(struct wiphy *wiphy); 1691 1692 /* internal structs */ 1693 struct cfg80211_conn; 1694 struct cfg80211_internal_bss; 1695 struct cfg80211_cached_keys; 1696 1697 #define MAX_AUTH_BSSES 4 1698 1699 /** 1700 * struct wireless_dev - wireless per-netdev state 1701 * 1702 * This structure must be allocated by the driver/stack 1703 * that uses the ieee80211_ptr field in struct net_device 1704 * (this is intentional so it can be allocated along with 1705 * the netdev.) 1706 * 1707 * @wiphy: pointer to hardware description 1708 * @iftype: interface type 1709 * @list: (private) Used to collect the interfaces 1710 * @netdev: (private) Used to reference back to the netdev 1711 * @current_bss: (private) Used by the internal configuration code 1712 * @channel: (private) Used by the internal configuration code to track 1713 * user-set AP, monitor and WDS channels for wireless extensions 1714 * @bssid: (private) Used by the internal configuration code 1715 * @ssid: (private) Used by the internal configuration code 1716 * @ssid_len: (private) Used by the internal configuration code 1717 * @mesh_id_len: (private) Used by the internal configuration code 1718 * @mesh_id_up_len: (private) Used by the internal configuration code 1719 * @wext: (private) Used by the internal wireless extensions compat code 1720 * @use_4addr: indicates 4addr mode is used on this interface, must be 1721 * set by driver (if supported) on add_interface BEFORE registering the 1722 * netdev and may otherwise be used by driver read-only, will be update 1723 * by cfg80211 on change_interface 1724 * @mgmt_registrations: list of registrations for management frames 1725 * @mgmt_registrations_lock: lock for the list 1726 * @mtx: mutex used to lock data in this struct 1727 * @cleanup_work: work struct used for cleanup that can't be done directly 1728 */ 1729 struct wireless_dev { 1730 struct wiphy *wiphy; 1731 enum nl80211_iftype iftype; 1732 1733 /* the remainder of this struct should be private to cfg80211 */ 1734 struct list_head list; 1735 struct net_device *netdev; 1736 1737 struct list_head mgmt_registrations; 1738 spinlock_t mgmt_registrations_lock; 1739 1740 struct mutex mtx; 1741 1742 struct work_struct cleanup_work; 1743 1744 bool use_4addr; 1745 1746 /* currently used for IBSS and SME - might be rearranged later */ 1747 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1748 u8 ssid_len, mesh_id_len, mesh_id_up_len; 1749 enum { 1750 CFG80211_SME_IDLE, 1751 CFG80211_SME_CONNECTING, 1752 CFG80211_SME_CONNECTED, 1753 } sme_state; 1754 struct cfg80211_conn *conn; 1755 struct cfg80211_cached_keys *connect_keys; 1756 1757 struct list_head event_list; 1758 spinlock_t event_lock; 1759 1760 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 1761 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 1762 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 1763 struct ieee80211_channel *channel; 1764 1765 bool ps; 1766 int ps_timeout; 1767 1768 #ifdef CONFIG_CFG80211_WEXT 1769 /* wext data */ 1770 struct { 1771 struct cfg80211_ibss_params ibss; 1772 struct cfg80211_connect_params connect; 1773 struct cfg80211_cached_keys *keys; 1774 u8 *ie; 1775 size_t ie_len; 1776 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 1777 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1778 s8 default_key, default_mgmt_key; 1779 bool prev_bssid_valid; 1780 } wext; 1781 #endif 1782 }; 1783 1784 /** 1785 * wdev_priv - return wiphy priv from wireless_dev 1786 * 1787 * @wdev: The wireless device whose wiphy's priv pointer to return 1788 */ 1789 static inline void *wdev_priv(struct wireless_dev *wdev) 1790 { 1791 BUG_ON(!wdev); 1792 return wiphy_priv(wdev->wiphy); 1793 } 1794 1795 /** 1796 * DOC: Utility functions 1797 * 1798 * cfg80211 offers a number of utility functions that can be useful. 1799 */ 1800 1801 /** 1802 * ieee80211_channel_to_frequency - convert channel number to frequency 1803 * @chan: channel number 1804 * @band: band, necessary due to channel number overlap 1805 */ 1806 extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 1807 1808 /** 1809 * ieee80211_frequency_to_channel - convert frequency to channel number 1810 * @freq: center frequency 1811 */ 1812 extern int ieee80211_frequency_to_channel(int freq); 1813 1814 /* 1815 * Name indirection necessary because the ieee80211 code also has 1816 * a function named "ieee80211_get_channel", so if you include 1817 * cfg80211's header file you get cfg80211's version, if you try 1818 * to include both header files you'll (rightfully!) get a symbol 1819 * clash. 1820 */ 1821 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 1822 int freq); 1823 /** 1824 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 1825 * @wiphy: the struct wiphy to get the channel for 1826 * @freq: the center frequency of the channel 1827 */ 1828 static inline struct ieee80211_channel * 1829 ieee80211_get_channel(struct wiphy *wiphy, int freq) 1830 { 1831 return __ieee80211_get_channel(wiphy, freq); 1832 } 1833 1834 /** 1835 * ieee80211_get_response_rate - get basic rate for a given rate 1836 * 1837 * @sband: the band to look for rates in 1838 * @basic_rates: bitmap of basic rates 1839 * @bitrate: the bitrate for which to find the basic rate 1840 * 1841 * This function returns the basic rate corresponding to a given 1842 * bitrate, that is the next lower bitrate contained in the basic 1843 * rate map, which is, for this function, given as a bitmap of 1844 * indices of rates in the band's bitrate table. 1845 */ 1846 struct ieee80211_rate * 1847 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 1848 u32 basic_rates, int bitrate); 1849 1850 /* 1851 * Radiotap parsing functions -- for controlled injection support 1852 * 1853 * Implemented in net/wireless/radiotap.c 1854 * Documentation in Documentation/networking/radiotap-headers.txt 1855 */ 1856 1857 struct radiotap_align_size { 1858 uint8_t align:4, size:4; 1859 }; 1860 1861 struct ieee80211_radiotap_namespace { 1862 const struct radiotap_align_size *align_size; 1863 int n_bits; 1864 uint32_t oui; 1865 uint8_t subns; 1866 }; 1867 1868 struct ieee80211_radiotap_vendor_namespaces { 1869 const struct ieee80211_radiotap_namespace *ns; 1870 int n_ns; 1871 }; 1872 1873 /** 1874 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 1875 * @this_arg_index: index of current arg, valid after each successful call 1876 * to ieee80211_radiotap_iterator_next() 1877 * @this_arg: pointer to current radiotap arg; it is valid after each 1878 * call to ieee80211_radiotap_iterator_next() but also after 1879 * ieee80211_radiotap_iterator_init() where it will point to 1880 * the beginning of the actual data portion 1881 * @this_arg_size: length of the current arg, for convenience 1882 * @current_namespace: pointer to the current namespace definition 1883 * (or internally %NULL if the current namespace is unknown) 1884 * @is_radiotap_ns: indicates whether the current namespace is the default 1885 * radiotap namespace or not 1886 * 1887 * @_rtheader: pointer to the radiotap header we are walking through 1888 * @_max_length: length of radiotap header in cpu byte ordering 1889 * @_arg_index: next argument index 1890 * @_arg: next argument pointer 1891 * @_next_bitmap: internal pointer to next present u32 1892 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 1893 * @_vns: vendor namespace definitions 1894 * @_next_ns_data: beginning of the next namespace's data 1895 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 1896 * next bitmap word 1897 * 1898 * Describes the radiotap parser state. Fields prefixed with an underscore 1899 * must not be used by users of the parser, only by the parser internally. 1900 */ 1901 1902 struct ieee80211_radiotap_iterator { 1903 struct ieee80211_radiotap_header *_rtheader; 1904 const struct ieee80211_radiotap_vendor_namespaces *_vns; 1905 const struct ieee80211_radiotap_namespace *current_namespace; 1906 1907 unsigned char *_arg, *_next_ns_data; 1908 __le32 *_next_bitmap; 1909 1910 unsigned char *this_arg; 1911 int this_arg_index; 1912 int this_arg_size; 1913 1914 int is_radiotap_ns; 1915 1916 int _max_length; 1917 int _arg_index; 1918 uint32_t _bitmap_shifter; 1919 int _reset_on_ext; 1920 }; 1921 1922 extern int ieee80211_radiotap_iterator_init( 1923 struct ieee80211_radiotap_iterator *iterator, 1924 struct ieee80211_radiotap_header *radiotap_header, 1925 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 1926 1927 extern int ieee80211_radiotap_iterator_next( 1928 struct ieee80211_radiotap_iterator *iterator); 1929 1930 1931 extern const unsigned char rfc1042_header[6]; 1932 extern const unsigned char bridge_tunnel_header[6]; 1933 1934 /** 1935 * ieee80211_get_hdrlen_from_skb - get header length from data 1936 * 1937 * Given an skb with a raw 802.11 header at the data pointer this function 1938 * returns the 802.11 header length in bytes (not including encryption 1939 * headers). If the data in the sk_buff is too short to contain a valid 802.11 1940 * header the function returns 0. 1941 * 1942 * @skb: the frame 1943 */ 1944 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 1945 1946 /** 1947 * ieee80211_hdrlen - get header length in bytes from frame control 1948 * @fc: frame control field in little-endian format 1949 */ 1950 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 1951 1952 /** 1953 * DOC: Data path helpers 1954 * 1955 * In addition to generic utilities, cfg80211 also offers 1956 * functions that help implement the data path for devices 1957 * that do not do the 802.11/802.3 conversion on the device. 1958 */ 1959 1960 /** 1961 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 1962 * @skb: the 802.11 data frame 1963 * @addr: the device MAC address 1964 * @iftype: the virtual interface type 1965 */ 1966 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 1967 enum nl80211_iftype iftype); 1968 1969 /** 1970 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 1971 * @skb: the 802.3 frame 1972 * @addr: the device MAC address 1973 * @iftype: the virtual interface type 1974 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 1975 * @qos: build 802.11 QoS data frame 1976 */ 1977 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 1978 enum nl80211_iftype iftype, u8 *bssid, bool qos); 1979 1980 /** 1981 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 1982 * 1983 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 1984 * 802.3 frames. The @list will be empty if the decode fails. The 1985 * @skb is consumed after the function returns. 1986 * 1987 * @skb: The input IEEE 802.11n A-MSDU frame. 1988 * @list: The output list of 802.3 frames. It must be allocated and 1989 * initialized by by the caller. 1990 * @addr: The device MAC address. 1991 * @iftype: The device interface type. 1992 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 1993 */ 1994 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 1995 const u8 *addr, enum nl80211_iftype iftype, 1996 const unsigned int extra_headroom); 1997 1998 /** 1999 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 2000 * @skb: the data frame 2001 */ 2002 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 2003 2004 /** 2005 * cfg80211_find_ie - find information element in data 2006 * 2007 * @eid: element ID 2008 * @ies: data consisting of IEs 2009 * @len: length of data 2010 * 2011 * This function will return %NULL if the element ID could 2012 * not be found or if the element is invalid (claims to be 2013 * longer than the given data), or a pointer to the first byte 2014 * of the requested element, that is the byte containing the 2015 * element ID. There are no checks on the element length 2016 * other than having to fit into the given data. 2017 */ 2018 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2019 2020 /** 2021 * DOC: Regulatory enforcement infrastructure 2022 * 2023 * TODO 2024 */ 2025 2026 /** 2027 * regulatory_hint - driver hint to the wireless core a regulatory domain 2028 * @wiphy: the wireless device giving the hint (used only for reporting 2029 * conflicts) 2030 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2031 * should be in. If @rd is set this should be NULL. Note that if you 2032 * set this to NULL you should still set rd->alpha2 to some accepted 2033 * alpha2. 2034 * 2035 * Wireless drivers can use this function to hint to the wireless core 2036 * what it believes should be the current regulatory domain by 2037 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2038 * domain should be in or by providing a completely build regulatory domain. 2039 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2040 * for a regulatory domain structure for the respective country. 2041 * 2042 * The wiphy must have been registered to cfg80211 prior to this call. 2043 * For cfg80211 drivers this means you must first use wiphy_register(), 2044 * for mac80211 drivers you must first use ieee80211_register_hw(). 2045 * 2046 * Drivers should check the return value, its possible you can get 2047 * an -ENOMEM. 2048 */ 2049 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2050 2051 /** 2052 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2053 * @wiphy: the wireless device we want to process the regulatory domain on 2054 * @regd: the custom regulatory domain to use for this wiphy 2055 * 2056 * Drivers can sometimes have custom regulatory domains which do not apply 2057 * to a specific country. Drivers can use this to apply such custom regulatory 2058 * domains. This routine must be called prior to wiphy registration. The 2059 * custom regulatory domain will be trusted completely and as such previous 2060 * default channel settings will be disregarded. If no rule is found for a 2061 * channel on the regulatory domain the channel will be disabled. 2062 */ 2063 extern void wiphy_apply_custom_regulatory( 2064 struct wiphy *wiphy, 2065 const struct ieee80211_regdomain *regd); 2066 2067 /** 2068 * freq_reg_info - get regulatory information for the given frequency 2069 * @wiphy: the wiphy for which we want to process this rule for 2070 * @center_freq: Frequency in KHz for which we want regulatory information for 2071 * @desired_bw_khz: the desired max bandwidth you want to use per 2072 * channel. Note that this is still 20 MHz if you want to use HT40 2073 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2074 * If set to 0 we'll assume you want the standard 20 MHz. 2075 * @reg_rule: the regulatory rule which we have for this frequency 2076 * 2077 * Use this function to get the regulatory rule for a specific frequency on 2078 * a given wireless device. If the device has a specific regulatory domain 2079 * it wants to follow we respect that unless a country IE has been received 2080 * and processed already. 2081 * 2082 * Returns 0 if it was able to find a valid regulatory rule which does 2083 * apply to the given center_freq otherwise it returns non-zero. It will 2084 * also return -ERANGE if we determine the given center_freq does not even have 2085 * a regulatory rule for a frequency range in the center_freq's band. See 2086 * freq_in_rule_band() for our current definition of a band -- this is purely 2087 * subjective and right now its 802.11 specific. 2088 */ 2089 extern int freq_reg_info(struct wiphy *wiphy, 2090 u32 center_freq, 2091 u32 desired_bw_khz, 2092 const struct ieee80211_reg_rule **reg_rule); 2093 2094 /* 2095 * Temporary wext handlers & helper functions 2096 * 2097 * In the future cfg80211 will simply assign the entire wext handler 2098 * structure to netdevs it manages, but we're not there yet. 2099 */ 2100 int cfg80211_wext_giwname(struct net_device *dev, 2101 struct iw_request_info *info, 2102 char *name, char *extra); 2103 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 2104 u32 *mode, char *extra); 2105 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 2106 u32 *mode, char *extra); 2107 int cfg80211_wext_siwscan(struct net_device *dev, 2108 struct iw_request_info *info, 2109 union iwreq_data *wrqu, char *extra); 2110 int cfg80211_wext_giwscan(struct net_device *dev, 2111 struct iw_request_info *info, 2112 struct iw_point *data, char *extra); 2113 int cfg80211_wext_siwmlme(struct net_device *dev, 2114 struct iw_request_info *info, 2115 struct iw_point *data, char *extra); 2116 int cfg80211_wext_giwrange(struct net_device *dev, 2117 struct iw_request_info *info, 2118 struct iw_point *data, char *extra); 2119 int cfg80211_wext_siwgenie(struct net_device *dev, 2120 struct iw_request_info *info, 2121 struct iw_point *data, char *extra); 2122 int cfg80211_wext_siwauth(struct net_device *dev, 2123 struct iw_request_info *info, 2124 struct iw_param *data, char *extra); 2125 int cfg80211_wext_giwauth(struct net_device *dev, 2126 struct iw_request_info *info, 2127 struct iw_param *data, char *extra); 2128 2129 int cfg80211_wext_siwfreq(struct net_device *dev, 2130 struct iw_request_info *info, 2131 struct iw_freq *freq, char *extra); 2132 int cfg80211_wext_giwfreq(struct net_device *dev, 2133 struct iw_request_info *info, 2134 struct iw_freq *freq, char *extra); 2135 int cfg80211_wext_siwessid(struct net_device *dev, 2136 struct iw_request_info *info, 2137 struct iw_point *data, char *ssid); 2138 int cfg80211_wext_giwessid(struct net_device *dev, 2139 struct iw_request_info *info, 2140 struct iw_point *data, char *ssid); 2141 int cfg80211_wext_siwrate(struct net_device *dev, 2142 struct iw_request_info *info, 2143 struct iw_param *rate, char *extra); 2144 int cfg80211_wext_giwrate(struct net_device *dev, 2145 struct iw_request_info *info, 2146 struct iw_param *rate, char *extra); 2147 2148 int cfg80211_wext_siwrts(struct net_device *dev, 2149 struct iw_request_info *info, 2150 struct iw_param *rts, char *extra); 2151 int cfg80211_wext_giwrts(struct net_device *dev, 2152 struct iw_request_info *info, 2153 struct iw_param *rts, char *extra); 2154 int cfg80211_wext_siwfrag(struct net_device *dev, 2155 struct iw_request_info *info, 2156 struct iw_param *frag, char *extra); 2157 int cfg80211_wext_giwfrag(struct net_device *dev, 2158 struct iw_request_info *info, 2159 struct iw_param *frag, char *extra); 2160 int cfg80211_wext_siwretry(struct net_device *dev, 2161 struct iw_request_info *info, 2162 struct iw_param *retry, char *extra); 2163 int cfg80211_wext_giwretry(struct net_device *dev, 2164 struct iw_request_info *info, 2165 struct iw_param *retry, char *extra); 2166 int cfg80211_wext_siwencodeext(struct net_device *dev, 2167 struct iw_request_info *info, 2168 struct iw_point *erq, char *extra); 2169 int cfg80211_wext_siwencode(struct net_device *dev, 2170 struct iw_request_info *info, 2171 struct iw_point *erq, char *keybuf); 2172 int cfg80211_wext_giwencode(struct net_device *dev, 2173 struct iw_request_info *info, 2174 struct iw_point *erq, char *keybuf); 2175 int cfg80211_wext_siwtxpower(struct net_device *dev, 2176 struct iw_request_info *info, 2177 union iwreq_data *data, char *keybuf); 2178 int cfg80211_wext_giwtxpower(struct net_device *dev, 2179 struct iw_request_info *info, 2180 union iwreq_data *data, char *keybuf); 2181 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev); 2182 2183 int cfg80211_wext_siwpower(struct net_device *dev, 2184 struct iw_request_info *info, 2185 struct iw_param *wrq, char *extra); 2186 int cfg80211_wext_giwpower(struct net_device *dev, 2187 struct iw_request_info *info, 2188 struct iw_param *wrq, char *extra); 2189 2190 int cfg80211_wext_siwap(struct net_device *dev, 2191 struct iw_request_info *info, 2192 struct sockaddr *ap_addr, char *extra); 2193 int cfg80211_wext_giwap(struct net_device *dev, 2194 struct iw_request_info *info, 2195 struct sockaddr *ap_addr, char *extra); 2196 2197 int cfg80211_wext_siwpmksa(struct net_device *dev, 2198 struct iw_request_info *info, 2199 struct iw_point *data, char *extra); 2200 2201 /* 2202 * callbacks for asynchronous cfg80211 methods, notification 2203 * functions and BSS handling helpers 2204 */ 2205 2206 /** 2207 * cfg80211_scan_done - notify that scan finished 2208 * 2209 * @request: the corresponding scan request 2210 * @aborted: set to true if the scan was aborted for any reason, 2211 * userspace will be notified of that 2212 */ 2213 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2214 2215 /** 2216 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2217 * 2218 * @wiphy: the wiphy reporting the BSS 2219 * @channel: The channel the frame was received on 2220 * @mgmt: the management frame (probe response or beacon) 2221 * @len: length of the management frame 2222 * @signal: the signal strength, type depends on the wiphy's signal_type 2223 * @gfp: context flags 2224 * 2225 * This informs cfg80211 that BSS information was found and 2226 * the BSS should be updated/added. 2227 */ 2228 struct cfg80211_bss* 2229 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2230 struct ieee80211_channel *channel, 2231 struct ieee80211_mgmt *mgmt, size_t len, 2232 s32 signal, gfp_t gfp); 2233 2234 /** 2235 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2236 * 2237 * @wiphy: the wiphy reporting the BSS 2238 * @channel: The channel the frame was received on 2239 * @bssid: the BSSID of the BSS 2240 * @timestamp: the TSF timestamp sent by the peer 2241 * @capability: the capability field sent by the peer 2242 * @beacon_interval: the beacon interval announced by the peer 2243 * @ie: additional IEs sent by the peer 2244 * @ielen: length of the additional IEs 2245 * @signal: the signal strength, type depends on the wiphy's signal_type 2246 * @gfp: context flags 2247 * 2248 * This informs cfg80211 that BSS information was found and 2249 * the BSS should be updated/added. 2250 */ 2251 struct cfg80211_bss* 2252 cfg80211_inform_bss(struct wiphy *wiphy, 2253 struct ieee80211_channel *channel, 2254 const u8 *bssid, 2255 u64 timestamp, u16 capability, u16 beacon_interval, 2256 const u8 *ie, size_t ielen, 2257 s32 signal, gfp_t gfp); 2258 2259 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2260 struct ieee80211_channel *channel, 2261 const u8 *bssid, 2262 const u8 *ssid, size_t ssid_len, 2263 u16 capa_mask, u16 capa_val); 2264 static inline struct cfg80211_bss * 2265 cfg80211_get_ibss(struct wiphy *wiphy, 2266 struct ieee80211_channel *channel, 2267 const u8 *ssid, size_t ssid_len) 2268 { 2269 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2270 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2271 } 2272 2273 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2274 struct ieee80211_channel *channel, 2275 const u8 *meshid, size_t meshidlen, 2276 const u8 *meshcfg); 2277 void cfg80211_put_bss(struct cfg80211_bss *bss); 2278 2279 /** 2280 * cfg80211_unlink_bss - unlink BSS from internal data structures 2281 * @wiphy: the wiphy 2282 * @bss: the bss to remove 2283 * 2284 * This function removes the given BSS from the internal data structures 2285 * thereby making it no longer show up in scan results etc. Use this 2286 * function when you detect a BSS is gone. Normally BSSes will also time 2287 * out, so it is not necessary to use this function at all. 2288 */ 2289 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2290 2291 /** 2292 * cfg80211_send_rx_auth - notification of processed authentication 2293 * @dev: network device 2294 * @buf: authentication frame (header + body) 2295 * @len: length of the frame data 2296 * 2297 * This function is called whenever an authentication has been processed in 2298 * station mode. The driver is required to call either this function or 2299 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2300 * call. This function may sleep. 2301 */ 2302 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2303 2304 /** 2305 * cfg80211_send_auth_timeout - notification of timed out authentication 2306 * @dev: network device 2307 * @addr: The MAC address of the device with which the authentication timed out 2308 * 2309 * This function may sleep. 2310 */ 2311 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2312 2313 /** 2314 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2315 * @dev: network device 2316 * @addr: The MAC address of the device with which the authentication timed out 2317 * 2318 * When a pending authentication had no action yet, the driver may decide 2319 * to not send a deauth frame, but in that case must calls this function 2320 * to tell cfg80211 about this decision. It is only valid to call this 2321 * function within the deauth() callback. 2322 */ 2323 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2324 2325 /** 2326 * cfg80211_send_rx_assoc - notification of processed association 2327 * @dev: network device 2328 * @buf: (re)association response frame (header + body) 2329 * @len: length of the frame data 2330 * 2331 * This function is called whenever a (re)association response has been 2332 * processed in station mode. The driver is required to call either this 2333 * function or cfg80211_send_assoc_timeout() to indicate the result of 2334 * cfg80211_ops::assoc() call. This function may sleep. 2335 */ 2336 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2337 2338 /** 2339 * cfg80211_send_assoc_timeout - notification of timed out association 2340 * @dev: network device 2341 * @addr: The MAC address of the device with which the association timed out 2342 * 2343 * This function may sleep. 2344 */ 2345 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2346 2347 /** 2348 * cfg80211_send_deauth - notification of processed deauthentication 2349 * @dev: network device 2350 * @buf: deauthentication frame (header + body) 2351 * @len: length of the frame data 2352 * 2353 * This function is called whenever deauthentication has been processed in 2354 * station mode. This includes both received deauthentication frames and 2355 * locally generated ones. This function may sleep. 2356 */ 2357 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2358 2359 /** 2360 * __cfg80211_send_deauth - notification of processed deauthentication 2361 * @dev: network device 2362 * @buf: deauthentication frame (header + body) 2363 * @len: length of the frame data 2364 * 2365 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2366 */ 2367 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2368 2369 /** 2370 * cfg80211_send_disassoc - notification of processed disassociation 2371 * @dev: network device 2372 * @buf: disassociation response frame (header + body) 2373 * @len: length of the frame data 2374 * 2375 * This function is called whenever disassociation has been processed in 2376 * station mode. This includes both received disassociation frames and locally 2377 * generated ones. This function may sleep. 2378 */ 2379 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2380 2381 /** 2382 * __cfg80211_send_disassoc - notification of processed disassociation 2383 * @dev: network device 2384 * @buf: disassociation response frame (header + body) 2385 * @len: length of the frame data 2386 * 2387 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2388 */ 2389 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2390 size_t len); 2391 2392 /** 2393 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2394 * @dev: network device 2395 * @buf: deauthentication frame (header + body) 2396 * @len: length of the frame data 2397 * 2398 * This function is called whenever a received Deauthentication frame has been 2399 * dropped in station mode because of MFP being used but the Deauthentication 2400 * frame was not protected. This function may sleep. 2401 */ 2402 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2403 size_t len); 2404 2405 /** 2406 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2407 * @dev: network device 2408 * @buf: disassociation frame (header + body) 2409 * @len: length of the frame data 2410 * 2411 * This function is called whenever a received Disassociation frame has been 2412 * dropped in station mode because of MFP being used but the Disassociation 2413 * frame was not protected. This function may sleep. 2414 */ 2415 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2416 size_t len); 2417 2418 /** 2419 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2420 * @dev: network device 2421 * @addr: The source MAC address of the frame 2422 * @key_type: The key type that the received frame used 2423 * @key_id: Key identifier (0..3) 2424 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2425 * @gfp: allocation flags 2426 * 2427 * This function is called whenever the local MAC detects a MIC failure in a 2428 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2429 * primitive. 2430 */ 2431 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2432 enum nl80211_key_type key_type, int key_id, 2433 const u8 *tsc, gfp_t gfp); 2434 2435 /** 2436 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2437 * 2438 * @dev: network device 2439 * @bssid: the BSSID of the IBSS joined 2440 * @gfp: allocation flags 2441 * 2442 * This function notifies cfg80211 that the device joined an IBSS or 2443 * switched to a different BSSID. Before this function can be called, 2444 * either a beacon has to have been received from the IBSS, or one of 2445 * the cfg80211_inform_bss{,_frame} functions must have been called 2446 * with the locally generated beacon -- this guarantees that there is 2447 * always a scan result for this IBSS. cfg80211 will handle the rest. 2448 */ 2449 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2450 2451 /** 2452 * DOC: RFkill integration 2453 * 2454 * RFkill integration in cfg80211 is almost invisible to drivers, 2455 * as cfg80211 automatically registers an rfkill instance for each 2456 * wireless device it knows about. Soft kill is also translated 2457 * into disconnecting and turning all interfaces off, drivers are 2458 * expected to turn off the device when all interfaces are down. 2459 * 2460 * However, devices may have a hard RFkill line, in which case they 2461 * also need to interact with the rfkill subsystem, via cfg80211. 2462 * They can do this with a few helper functions documented here. 2463 */ 2464 2465 /** 2466 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2467 * @wiphy: the wiphy 2468 * @blocked: block status 2469 */ 2470 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2471 2472 /** 2473 * wiphy_rfkill_start_polling - start polling rfkill 2474 * @wiphy: the wiphy 2475 */ 2476 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2477 2478 /** 2479 * wiphy_rfkill_stop_polling - stop polling rfkill 2480 * @wiphy: the wiphy 2481 */ 2482 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2483 2484 #ifdef CONFIG_NL80211_TESTMODE 2485 /** 2486 * DOC: Test mode 2487 * 2488 * Test mode is a set of utility functions to allow drivers to 2489 * interact with driver-specific tools to aid, for instance, 2490 * factory programming. 2491 * 2492 * This chapter describes how drivers interact with it, for more 2493 * information see the nl80211 book's chapter on it. 2494 */ 2495 2496 /** 2497 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2498 * @wiphy: the wiphy 2499 * @approxlen: an upper bound of the length of the data that will 2500 * be put into the skb 2501 * 2502 * This function allocates and pre-fills an skb for a reply to 2503 * the testmode command. Since it is intended for a reply, calling 2504 * it outside of the @testmode_cmd operation is invalid. 2505 * 2506 * The returned skb (or %NULL if any errors happen) is pre-filled 2507 * with the wiphy index and set up in a way that any data that is 2508 * put into the skb (with skb_put(), nla_put() or similar) will end 2509 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2510 * needs to be done with the skb is adding data for the corresponding 2511 * userspace tool which can then read that data out of the testdata 2512 * attribute. You must not modify the skb in any other way. 2513 * 2514 * When done, call cfg80211_testmode_reply() with the skb and return 2515 * its error code as the result of the @testmode_cmd operation. 2516 */ 2517 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2518 int approxlen); 2519 2520 /** 2521 * cfg80211_testmode_reply - send the reply skb 2522 * @skb: The skb, must have been allocated with 2523 * cfg80211_testmode_alloc_reply_skb() 2524 * 2525 * Returns an error code or 0 on success, since calling this 2526 * function will usually be the last thing before returning 2527 * from the @testmode_cmd you should return the error code. 2528 * Note that this function consumes the skb regardless of the 2529 * return value. 2530 */ 2531 int cfg80211_testmode_reply(struct sk_buff *skb); 2532 2533 /** 2534 * cfg80211_testmode_alloc_event_skb - allocate testmode event 2535 * @wiphy: the wiphy 2536 * @approxlen: an upper bound of the length of the data that will 2537 * be put into the skb 2538 * @gfp: allocation flags 2539 * 2540 * This function allocates and pre-fills an skb for an event on the 2541 * testmode multicast group. 2542 * 2543 * The returned skb (or %NULL if any errors happen) is set up in the 2544 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 2545 * for an event. As there, you should simply add data to it that will 2546 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 2547 * not modify the skb in any other way. 2548 * 2549 * When done filling the skb, call cfg80211_testmode_event() with the 2550 * skb to send the event. 2551 */ 2552 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 2553 int approxlen, gfp_t gfp); 2554 2555 /** 2556 * cfg80211_testmode_event - send the event 2557 * @skb: The skb, must have been allocated with 2558 * cfg80211_testmode_alloc_event_skb() 2559 * @gfp: allocation flags 2560 * 2561 * This function sends the given @skb, which must have been allocated 2562 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 2563 * consumes it. 2564 */ 2565 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 2566 2567 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 2568 #else 2569 #define CFG80211_TESTMODE_CMD(cmd) 2570 #endif 2571 2572 /** 2573 * cfg80211_connect_result - notify cfg80211 of connection result 2574 * 2575 * @dev: network device 2576 * @bssid: the BSSID of the AP 2577 * @req_ie: association request IEs (maybe be %NULL) 2578 * @req_ie_len: association request IEs length 2579 * @resp_ie: association response IEs (may be %NULL) 2580 * @resp_ie_len: assoc response IEs length 2581 * @status: status code, 0 for successful connection, use 2582 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 2583 * the real status code for failures. 2584 * @gfp: allocation flags 2585 * 2586 * It should be called by the underlying driver whenever connect() has 2587 * succeeded. 2588 */ 2589 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 2590 const u8 *req_ie, size_t req_ie_len, 2591 const u8 *resp_ie, size_t resp_ie_len, 2592 u16 status, gfp_t gfp); 2593 2594 /** 2595 * cfg80211_roamed - notify cfg80211 of roaming 2596 * 2597 * @dev: network device 2598 * @bssid: the BSSID of the new AP 2599 * @req_ie: association request IEs (maybe be %NULL) 2600 * @req_ie_len: association request IEs length 2601 * @resp_ie: association response IEs (may be %NULL) 2602 * @resp_ie_len: assoc response IEs length 2603 * @gfp: allocation flags 2604 * 2605 * It should be called by the underlying driver whenever it roamed 2606 * from one AP to another while connected. 2607 */ 2608 void cfg80211_roamed(struct net_device *dev, const u8 *bssid, 2609 const u8 *req_ie, size_t req_ie_len, 2610 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 2611 2612 /** 2613 * cfg80211_disconnected - notify cfg80211 that connection was dropped 2614 * 2615 * @dev: network device 2616 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 2617 * @ie_len: length of IEs 2618 * @reason: reason code for the disconnection, set it to 0 if unknown 2619 * @gfp: allocation flags 2620 * 2621 * After it calls this function, the driver should enter an idle state 2622 * and not try to connect to any AP any more. 2623 */ 2624 void cfg80211_disconnected(struct net_device *dev, u16 reason, 2625 u8 *ie, size_t ie_len, gfp_t gfp); 2626 2627 /** 2628 * cfg80211_ready_on_channel - notification of remain_on_channel start 2629 * @dev: network device 2630 * @cookie: the request cookie 2631 * @chan: The current channel (from remain_on_channel request) 2632 * @channel_type: Channel type 2633 * @duration: Duration in milliseconds that the driver intents to remain on the 2634 * channel 2635 * @gfp: allocation flags 2636 */ 2637 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 2638 struct ieee80211_channel *chan, 2639 enum nl80211_channel_type channel_type, 2640 unsigned int duration, gfp_t gfp); 2641 2642 /** 2643 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 2644 * @dev: network device 2645 * @cookie: the request cookie 2646 * @chan: The current channel (from remain_on_channel request) 2647 * @channel_type: Channel type 2648 * @gfp: allocation flags 2649 */ 2650 void cfg80211_remain_on_channel_expired(struct net_device *dev, 2651 u64 cookie, 2652 struct ieee80211_channel *chan, 2653 enum nl80211_channel_type channel_type, 2654 gfp_t gfp); 2655 2656 2657 /** 2658 * cfg80211_new_sta - notify userspace about station 2659 * 2660 * @dev: the netdev 2661 * @mac_addr: the station's address 2662 * @sinfo: the station information 2663 * @gfp: allocation flags 2664 */ 2665 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 2666 struct station_info *sinfo, gfp_t gfp); 2667 2668 /** 2669 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 2670 * @dev: network device 2671 * @freq: Frequency on which the frame was received in MHz 2672 * @buf: Management frame (header + body) 2673 * @len: length of the frame data 2674 * @gfp: context flags 2675 * 2676 * Returns %true if a user space application has registered for this frame. 2677 * For action frames, that makes it responsible for rejecting unrecognized 2678 * action frames; %false otherwise, in which case for action frames the 2679 * driver is responsible for rejecting the frame. 2680 * 2681 * This function is called whenever an Action frame is received for a station 2682 * mode interface, but is not processed in kernel. 2683 */ 2684 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 2685 size_t len, gfp_t gfp); 2686 2687 /** 2688 * cfg80211_mgmt_tx_status - notification of TX status for management frame 2689 * @dev: network device 2690 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 2691 * @buf: Management frame (header + body) 2692 * @len: length of the frame data 2693 * @ack: Whether frame was acknowledged 2694 * @gfp: context flags 2695 * 2696 * This function is called whenever a management frame was requested to be 2697 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 2698 * transmission attempt. 2699 */ 2700 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 2701 const u8 *buf, size_t len, bool ack, gfp_t gfp); 2702 2703 2704 /** 2705 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 2706 * @dev: network device 2707 * @rssi_event: the triggered RSSI event 2708 * @gfp: context flags 2709 * 2710 * This function is called when a configured connection quality monitoring 2711 * rssi threshold reached event occurs. 2712 */ 2713 void cfg80211_cqm_rssi_notify(struct net_device *dev, 2714 enum nl80211_cqm_rssi_threshold_event rssi_event, 2715 gfp_t gfp); 2716 2717 /** 2718 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 2719 * @dev: network device 2720 * @peer: peer's MAC address 2721 * @num_packets: how many packets were lost -- should be a fixed threshold 2722 * but probably no less than maybe 50, or maybe a throughput dependent 2723 * threshold (to account for temporary interference) 2724 * @gfp: context flags 2725 */ 2726 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 2727 const u8 *peer, u32 num_packets, gfp_t gfp); 2728 2729 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 2730 2731 /* wiphy_printk helpers, similar to dev_printk */ 2732 2733 #define wiphy_printk(level, wiphy, format, args...) \ 2734 dev_printk(level, &(wiphy)->dev, format, ##args) 2735 #define wiphy_emerg(wiphy, format, args...) \ 2736 dev_emerg(&(wiphy)->dev, format, ##args) 2737 #define wiphy_alert(wiphy, format, args...) \ 2738 dev_alert(&(wiphy)->dev, format, ##args) 2739 #define wiphy_crit(wiphy, format, args...) \ 2740 dev_crit(&(wiphy)->dev, format, ##args) 2741 #define wiphy_err(wiphy, format, args...) \ 2742 dev_err(&(wiphy)->dev, format, ##args) 2743 #define wiphy_warn(wiphy, format, args...) \ 2744 dev_warn(&(wiphy)->dev, format, ##args) 2745 #define wiphy_notice(wiphy, format, args...) \ 2746 dev_notice(&(wiphy)->dev, format, ##args) 2747 #define wiphy_info(wiphy, format, args...) \ 2748 dev_info(&(wiphy)->dev, format, ##args) 2749 2750 #define wiphy_debug(wiphy, format, args...) \ 2751 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 2752 2753 #define wiphy_dbg(wiphy, format, args...) \ 2754 dev_dbg(&(wiphy)->dev, format, ##args) 2755 2756 #if defined(VERBOSE_DEBUG) 2757 #define wiphy_vdbg wiphy_dbg 2758 #else 2759 #define wiphy_vdbg(wiphy, format, args...) \ 2760 ({ \ 2761 if (0) \ 2762 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 2763 0; \ 2764 }) 2765 #endif 2766 2767 /* 2768 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 2769 * of using a WARN/WARN_ON to get the message out, including the 2770 * file/line information and a backtrace. 2771 */ 2772 #define wiphy_WARN(wiphy, format, args...) \ 2773 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 2774 2775 #endif /* __NET_CFG80211_H */ 2776