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 /** 24 * DOC: Introduction 25 * 26 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 27 * userspace and drivers, and offers some utility functionality associated 28 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 29 * by all modern wireless drivers in Linux, so that they offer a consistent 30 * API through nl80211. For backward compatibility, cfg80211 also offers 31 * wireless extensions to userspace, but hides them from drivers completely. 32 * 33 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 34 * use restrictions. 35 */ 36 37 38 /** 39 * DOC: Device registration 40 * 41 * In order for a driver to use cfg80211, it must register the hardware device 42 * with cfg80211. This happens through a number of hardware capability structs 43 * described below. 44 * 45 * The fundamental structure for each device is the 'wiphy', of which each 46 * instance describes a physical wireless device connected to the system. Each 47 * such wiphy can have zero, one, or many virtual interfaces associated with 48 * it, which need to be identified as such by pointing the network interface's 49 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 50 * the wireless part of the interface, normally this struct is embedded in the 51 * network interface's private data area. Drivers can optionally allow creating 52 * or destroying virtual interfaces on the fly, but without at least one or the 53 * ability to create some the wireless device isn't useful. 54 * 55 * Each wiphy structure contains device capability information, and also has 56 * a pointer to the various operations the driver offers. The definitions and 57 * structures here describe these capabilities in detail. 58 */ 59 60 /* 61 * wireless hardware capability structures 62 */ 63 64 /** 65 * enum ieee80211_band - supported frequency bands 66 * 67 * The bands are assigned this way because the supported 68 * bitrates differ in these bands. 69 * 70 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 71 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 72 * @IEEE80211_NUM_BANDS: number of defined bands 73 */ 74 enum ieee80211_band { 75 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 76 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 77 78 /* keep last */ 79 IEEE80211_NUM_BANDS 80 }; 81 82 /** 83 * enum ieee80211_channel_flags - channel flags 84 * 85 * Channel flags set by the regulatory control code. 86 * 87 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 88 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted 89 * on this channel. 90 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. 91 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 92 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 93 * is not permitted. 94 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 95 * is not permitted. 96 */ 97 enum ieee80211_channel_flags { 98 IEEE80211_CHAN_DISABLED = 1<<0, 99 IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, 100 IEEE80211_CHAN_NO_IBSS = 1<<2, 101 IEEE80211_CHAN_RADAR = 1<<3, 102 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 103 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 104 }; 105 106 #define IEEE80211_CHAN_NO_HT40 \ 107 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 108 109 /** 110 * struct ieee80211_channel - channel definition 111 * 112 * This structure describes a single channel for use 113 * with cfg80211. 114 * 115 * @center_freq: center frequency in MHz 116 * @hw_value: hardware-specific value for the channel 117 * @flags: channel flags from &enum ieee80211_channel_flags. 118 * @orig_flags: channel flags at registration time, used by regulatory 119 * code to support devices with additional restrictions 120 * @band: band this channel belongs to. 121 * @max_antenna_gain: maximum antenna gain in dBi 122 * @max_power: maximum transmission power (in dBm) 123 * @max_reg_power: maximum regulatory transmission power (in dBm) 124 * @beacon_found: helper to regulatory code to indicate when a beacon 125 * has been found on this channel. Use regulatory_hint_found_beacon() 126 * to enable this, this is useful only on 5 GHz band. 127 * @orig_mag: internal use 128 * @orig_mpwr: internal use 129 */ 130 struct ieee80211_channel { 131 enum ieee80211_band band; 132 u16 center_freq; 133 u16 hw_value; 134 u32 flags; 135 int max_antenna_gain; 136 int max_power; 137 int max_reg_power; 138 bool beacon_found; 139 u32 orig_flags; 140 int orig_mag, orig_mpwr; 141 }; 142 143 /** 144 * enum ieee80211_rate_flags - rate flags 145 * 146 * Hardware/specification flags for rates. These are structured 147 * in a way that allows using the same bitrate structure for 148 * different bands/PHY modes. 149 * 150 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 151 * preamble on this bitrate; only relevant in 2.4GHz band and 152 * with CCK rates. 153 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 154 * when used with 802.11a (on the 5 GHz band); filled by the 155 * core code when registering the wiphy. 156 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 157 * when used with 802.11b (on the 2.4 GHz band); filled by the 158 * core code when registering the wiphy. 159 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 160 * when used with 802.11g (on the 2.4 GHz band); filled by the 161 * core code when registering the wiphy. 162 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 163 */ 164 enum ieee80211_rate_flags { 165 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 166 IEEE80211_RATE_MANDATORY_A = 1<<1, 167 IEEE80211_RATE_MANDATORY_B = 1<<2, 168 IEEE80211_RATE_MANDATORY_G = 1<<3, 169 IEEE80211_RATE_ERP_G = 1<<4, 170 }; 171 172 /** 173 * struct ieee80211_rate - bitrate definition 174 * 175 * This structure describes a bitrate that an 802.11 PHY can 176 * operate with. The two values @hw_value and @hw_value_short 177 * are only for driver use when pointers to this structure are 178 * passed around. 179 * 180 * @flags: rate-specific flags 181 * @bitrate: bitrate in units of 100 Kbps 182 * @hw_value: driver/hardware value for this rate 183 * @hw_value_short: driver/hardware value for this rate when 184 * short preamble is used 185 */ 186 struct ieee80211_rate { 187 u32 flags; 188 u16 bitrate; 189 u16 hw_value, hw_value_short; 190 }; 191 192 /** 193 * struct ieee80211_sta_ht_cap - STA's HT capabilities 194 * 195 * This structure describes most essential parameters needed 196 * to describe 802.11n HT capabilities for an STA. 197 * 198 * @ht_supported: is HT supported by the STA 199 * @cap: HT capabilities map as described in 802.11n spec 200 * @ampdu_factor: Maximum A-MPDU length factor 201 * @ampdu_density: Minimum A-MPDU spacing 202 * @mcs: Supported MCS rates 203 */ 204 struct ieee80211_sta_ht_cap { 205 u16 cap; /* use IEEE80211_HT_CAP_ */ 206 bool ht_supported; 207 u8 ampdu_factor; 208 u8 ampdu_density; 209 struct ieee80211_mcs_info mcs; 210 }; 211 212 /** 213 * struct ieee80211_supported_band - frequency band definition 214 * 215 * This structure describes a frequency band a wiphy 216 * is able to operate in. 217 * 218 * @channels: Array of channels the hardware can operate in 219 * in this band. 220 * @band: the band this structure represents 221 * @n_channels: Number of channels in @channels 222 * @bitrates: Array of bitrates the hardware can operate with 223 * in this band. Must be sorted to give a valid "supported 224 * rates" IE, i.e. CCK rates first, then OFDM. 225 * @n_bitrates: Number of bitrates in @bitrates 226 * @ht_cap: HT capabilities in this band 227 */ 228 struct ieee80211_supported_band { 229 struct ieee80211_channel *channels; 230 struct ieee80211_rate *bitrates; 231 enum ieee80211_band band; 232 int n_channels; 233 int n_bitrates; 234 struct ieee80211_sta_ht_cap ht_cap; 235 }; 236 237 /* 238 * Wireless hardware/device configuration structures and methods 239 */ 240 241 /** 242 * DOC: Actions and configuration 243 * 244 * Each wireless device and each virtual interface offer a set of configuration 245 * operations and other actions that are invoked by userspace. Each of these 246 * actions is described in the operations structure, and the parameters these 247 * operations use are described separately. 248 * 249 * Additionally, some operations are asynchronous and expect to get status 250 * information via some functions that drivers need to call. 251 * 252 * Scanning and BSS list handling with its associated functionality is described 253 * in a separate chapter. 254 */ 255 256 /** 257 * struct vif_params - describes virtual interface parameters 258 * @use_4addr: use 4-address frames 259 */ 260 struct vif_params { 261 int use_4addr; 262 }; 263 264 /** 265 * struct key_params - key information 266 * 267 * Information about a key 268 * 269 * @key: key material 270 * @key_len: length of key material 271 * @cipher: cipher suite selector 272 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 273 * with the get_key() callback, must be in little endian, 274 * length given by @seq_len. 275 * @seq_len: length of @seq. 276 */ 277 struct key_params { 278 u8 *key; 279 u8 *seq; 280 int key_len; 281 int seq_len; 282 u32 cipher; 283 }; 284 285 /** 286 * enum survey_info_flags - survey information flags 287 * 288 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 289 * @SURVEY_INFO_IN_USE: channel is currently being used 290 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 291 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 292 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 293 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 294 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 295 * 296 * Used by the driver to indicate which info in &struct survey_info 297 * it has filled in during the get_survey(). 298 */ 299 enum survey_info_flags { 300 SURVEY_INFO_NOISE_DBM = 1<<0, 301 SURVEY_INFO_IN_USE = 1<<1, 302 SURVEY_INFO_CHANNEL_TIME = 1<<2, 303 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 304 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 305 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 306 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 307 }; 308 309 /** 310 * struct survey_info - channel survey response 311 * 312 * @channel: the channel this survey record reports, mandatory 313 * @filled: bitflag of flags from &enum survey_info_flags 314 * @noise: channel noise in dBm. This and all following fields are 315 * optional 316 * @channel_time: amount of time in ms the radio spent on the channel 317 * @channel_time_busy: amount of time the primary channel was sensed busy 318 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 319 * @channel_time_rx: amount of time the radio spent receiving data 320 * @channel_time_tx: amount of time the radio spent transmitting data 321 * 322 * Used by dump_survey() to report back per-channel survey information. 323 * 324 * This structure can later be expanded with things like 325 * channel duty cycle etc. 326 */ 327 struct survey_info { 328 struct ieee80211_channel *channel; 329 u64 channel_time; 330 u64 channel_time_busy; 331 u64 channel_time_ext_busy; 332 u64 channel_time_rx; 333 u64 channel_time_tx; 334 u32 filled; 335 s8 noise; 336 }; 337 338 /** 339 * struct cfg80211_crypto_settings - Crypto settings 340 * @wpa_versions: indicates which, if any, WPA versions are enabled 341 * (from enum nl80211_wpa_versions) 342 * @cipher_group: group key cipher suite (or 0 if unset) 343 * @n_ciphers_pairwise: number of AP supported unicast ciphers 344 * @ciphers_pairwise: unicast key cipher suites 345 * @n_akm_suites: number of AKM suites 346 * @akm_suites: AKM suites 347 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 348 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 349 * required to assume that the port is unauthorized until authorized by 350 * user space. Otherwise, port is marked authorized by default. 351 * @control_port_ethertype: the control port protocol that should be 352 * allowed through even on unauthorized ports 353 * @control_port_no_encrypt: TRUE to prevent encryption of control port 354 * protocol frames. 355 */ 356 struct cfg80211_crypto_settings { 357 u32 wpa_versions; 358 u32 cipher_group; 359 int n_ciphers_pairwise; 360 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 361 int n_akm_suites; 362 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 363 bool control_port; 364 __be16 control_port_ethertype; 365 bool control_port_no_encrypt; 366 }; 367 368 /** 369 * struct cfg80211_beacon_data - beacon data 370 * @head: head portion of beacon (before TIM IE) 371 * or %NULL if not changed 372 * @tail: tail portion of beacon (after TIM IE) 373 * or %NULL if not changed 374 * @head_len: length of @head 375 * @tail_len: length of @tail 376 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 377 * @beacon_ies_len: length of beacon_ies in octets 378 * @proberesp_ies: extra information element(s) to add into Probe Response 379 * frames or %NULL 380 * @proberesp_ies_len: length of proberesp_ies in octets 381 * @assocresp_ies: extra information element(s) to add into (Re)Association 382 * Response frames or %NULL 383 * @assocresp_ies_len: length of assocresp_ies in octets 384 * @probe_resp_len: length of probe response template (@probe_resp) 385 * @probe_resp: probe response template (AP mode only) 386 */ 387 struct cfg80211_beacon_data { 388 const u8 *head, *tail; 389 const u8 *beacon_ies; 390 const u8 *proberesp_ies; 391 const u8 *assocresp_ies; 392 const u8 *probe_resp; 393 394 size_t head_len, tail_len; 395 size_t beacon_ies_len; 396 size_t proberesp_ies_len; 397 size_t assocresp_ies_len; 398 size_t probe_resp_len; 399 }; 400 401 /** 402 * struct cfg80211_ap_settings - AP configuration 403 * 404 * Used to configure an AP interface. 405 * 406 * @beacon: beacon data 407 * @beacon_interval: beacon interval 408 * @dtim_period: DTIM period 409 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 410 * user space) 411 * @ssid_len: length of @ssid 412 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 413 * @crypto: crypto settings 414 * @privacy: the BSS uses privacy 415 * @auth_type: Authentication type (algorithm) 416 * @inactivity_timeout: time in seconds to determine station's inactivity. 417 */ 418 struct cfg80211_ap_settings { 419 struct cfg80211_beacon_data beacon; 420 421 int beacon_interval, dtim_period; 422 const u8 *ssid; 423 size_t ssid_len; 424 enum nl80211_hidden_ssid hidden_ssid; 425 struct cfg80211_crypto_settings crypto; 426 bool privacy; 427 enum nl80211_auth_type auth_type; 428 int inactivity_timeout; 429 }; 430 431 /** 432 * enum plink_action - actions to perform in mesh peers 433 * 434 * @PLINK_ACTION_INVALID: action 0 is reserved 435 * @PLINK_ACTION_OPEN: start mesh peer link establishment 436 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 437 */ 438 enum plink_actions { 439 PLINK_ACTION_INVALID, 440 PLINK_ACTION_OPEN, 441 PLINK_ACTION_BLOCK, 442 }; 443 444 /** 445 * enum station_parameters_apply_mask - station parameter values to apply 446 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 447 * 448 * Not all station parameters have in-band "no change" signalling, 449 * for those that don't these flags will are used. 450 */ 451 enum station_parameters_apply_mask { 452 STATION_PARAM_APPLY_UAPSD = BIT(0), 453 }; 454 455 /** 456 * struct station_parameters - station parameters 457 * 458 * Used to change and create a new station. 459 * 460 * @vlan: vlan interface station should belong to 461 * @supported_rates: supported rates in IEEE 802.11 format 462 * (or NULL for no change) 463 * @supported_rates_len: number of supported rates 464 * @sta_flags_mask: station flags that changed 465 * (bitmask of BIT(NL80211_STA_FLAG_...)) 466 * @sta_flags_set: station flags values 467 * (bitmask of BIT(NL80211_STA_FLAG_...)) 468 * @listen_interval: listen interval or -1 for no change 469 * @aid: AID or zero for no change 470 * @plink_action: plink action to take 471 * @plink_state: set the peer link state for a station 472 * @ht_capa: HT capabilities of station 473 * @uapsd_queues: bitmap of queues configured for uapsd. same format 474 * as the AC bitmap in the QoS info field 475 * @max_sp: max Service Period. same format as the MAX_SP in the 476 * QoS info field (but already shifted down) 477 * @sta_modify_mask: bitmap indicating which parameters changed 478 * (for those that don't have a natural "no change" value), 479 * see &enum station_parameters_apply_mask 480 */ 481 struct station_parameters { 482 u8 *supported_rates; 483 struct net_device *vlan; 484 u32 sta_flags_mask, sta_flags_set; 485 u32 sta_modify_mask; 486 int listen_interval; 487 u16 aid; 488 u8 supported_rates_len; 489 u8 plink_action; 490 u8 plink_state; 491 struct ieee80211_ht_cap *ht_capa; 492 u8 uapsd_queues; 493 u8 max_sp; 494 }; 495 496 /** 497 * enum station_info_flags - station information flags 498 * 499 * Used by the driver to indicate which info in &struct station_info 500 * it has filled in during get_station() or dump_station(). 501 * 502 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 503 * @STATION_INFO_RX_BYTES: @rx_bytes filled 504 * @STATION_INFO_TX_BYTES: @tx_bytes filled 505 * @STATION_INFO_LLID: @llid filled 506 * @STATION_INFO_PLID: @plid filled 507 * @STATION_INFO_PLINK_STATE: @plink_state filled 508 * @STATION_INFO_SIGNAL: @signal filled 509 * @STATION_INFO_TX_BITRATE: @txrate fields are filled 510 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 511 * @STATION_INFO_RX_PACKETS: @rx_packets filled 512 * @STATION_INFO_TX_PACKETS: @tx_packets filled 513 * @STATION_INFO_TX_RETRIES: @tx_retries filled 514 * @STATION_INFO_TX_FAILED: @tx_failed filled 515 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 516 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 517 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled 518 * @STATION_INFO_BSS_PARAM: @bss_param filled 519 * @STATION_INFO_CONNECTED_TIME: @connected_time filled 520 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled 521 * @STATION_INFO_STA_FLAGS: @sta_flags filled 522 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled 523 */ 524 enum station_info_flags { 525 STATION_INFO_INACTIVE_TIME = 1<<0, 526 STATION_INFO_RX_BYTES = 1<<1, 527 STATION_INFO_TX_BYTES = 1<<2, 528 STATION_INFO_LLID = 1<<3, 529 STATION_INFO_PLID = 1<<4, 530 STATION_INFO_PLINK_STATE = 1<<5, 531 STATION_INFO_SIGNAL = 1<<6, 532 STATION_INFO_TX_BITRATE = 1<<7, 533 STATION_INFO_RX_PACKETS = 1<<8, 534 STATION_INFO_TX_PACKETS = 1<<9, 535 STATION_INFO_TX_RETRIES = 1<<10, 536 STATION_INFO_TX_FAILED = 1<<11, 537 STATION_INFO_RX_DROP_MISC = 1<<12, 538 STATION_INFO_SIGNAL_AVG = 1<<13, 539 STATION_INFO_RX_BITRATE = 1<<14, 540 STATION_INFO_BSS_PARAM = 1<<15, 541 STATION_INFO_CONNECTED_TIME = 1<<16, 542 STATION_INFO_ASSOC_REQ_IES = 1<<17, 543 STATION_INFO_STA_FLAGS = 1<<18, 544 STATION_INFO_BEACON_LOSS_COUNT = 1<<19 545 }; 546 547 /** 548 * enum station_info_rate_flags - bitrate info flags 549 * 550 * Used by the driver to indicate the specific rate transmission 551 * type for 802.11n transmissions. 552 * 553 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 554 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 555 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 556 */ 557 enum rate_info_flags { 558 RATE_INFO_FLAGS_MCS = 1<<0, 559 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 560 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 561 }; 562 563 /** 564 * struct rate_info - bitrate information 565 * 566 * Information about a receiving or transmitting bitrate 567 * 568 * @flags: bitflag of flags from &enum rate_info_flags 569 * @mcs: mcs index if struct describes a 802.11n bitrate 570 * @legacy: bitrate in 100kbit/s for 802.11abg 571 */ 572 struct rate_info { 573 u8 flags; 574 u8 mcs; 575 u16 legacy; 576 }; 577 578 /** 579 * enum station_info_rate_flags - bitrate info flags 580 * 581 * Used by the driver to indicate the specific rate transmission 582 * type for 802.11n transmissions. 583 * 584 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 585 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 586 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 587 */ 588 enum bss_param_flags { 589 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 590 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 591 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 592 }; 593 594 /** 595 * struct sta_bss_parameters - BSS parameters for the attached station 596 * 597 * Information about the currently associated BSS 598 * 599 * @flags: bitflag of flags from &enum bss_param_flags 600 * @dtim_period: DTIM period for the BSS 601 * @beacon_interval: beacon interval 602 */ 603 struct sta_bss_parameters { 604 u8 flags; 605 u8 dtim_period; 606 u16 beacon_interval; 607 }; 608 609 /** 610 * struct station_info - station information 611 * 612 * Station information filled by driver for get_station() and dump_station. 613 * 614 * @filled: bitflag of flags from &enum station_info_flags 615 * @connected_time: time(in secs) since a station is last connected 616 * @inactive_time: time since last station activity (tx/rx) in milliseconds 617 * @rx_bytes: bytes received from this station 618 * @tx_bytes: bytes transmitted to this station 619 * @llid: mesh local link id 620 * @plid: mesh peer link id 621 * @plink_state: mesh peer link state 622 * @signal: signal strength of last received packet in dBm 623 * @signal_avg: signal strength average in dBm 624 * @txrate: current unicast bitrate from this station 625 * @rxrate: current unicast bitrate to this station 626 * @rx_packets: packets received from this station 627 * @tx_packets: packets transmitted to this station 628 * @tx_retries: cumulative retry counts 629 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 630 * @rx_dropped_misc: Dropped for un-specified reason. 631 * @bss_param: current BSS parameters 632 * @generation: generation number for nl80211 dumps. 633 * This number should increase every time the list of stations 634 * changes, i.e. when a station is added or removed, so that 635 * userspace can tell whether it got a consistent snapshot. 636 * @assoc_req_ies: IEs from (Re)Association Request. 637 * This is used only when in AP mode with drivers that do not use 638 * user space MLME/SME implementation. The information is provided for 639 * the cfg80211_new_sta() calls to notify user space of the IEs. 640 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 641 * @sta_flags: station flags mask & values 642 * @beacon_loss_count: Number of times beacon loss event has triggered. 643 */ 644 struct station_info { 645 u32 filled; 646 u32 connected_time; 647 u32 inactive_time; 648 u32 rx_bytes; 649 u32 tx_bytes; 650 u16 llid; 651 u16 plid; 652 u8 plink_state; 653 s8 signal; 654 s8 signal_avg; 655 struct rate_info txrate; 656 struct rate_info rxrate; 657 u32 rx_packets; 658 u32 tx_packets; 659 u32 tx_retries; 660 u32 tx_failed; 661 u32 rx_dropped_misc; 662 struct sta_bss_parameters bss_param; 663 struct nl80211_sta_flag_update sta_flags; 664 665 int generation; 666 667 const u8 *assoc_req_ies; 668 size_t assoc_req_ies_len; 669 670 u32 beacon_loss_count; 671 672 /* 673 * Note: Add a new enum station_info_flags value for each new field and 674 * use it to check which fields are initialized. 675 */ 676 }; 677 678 /** 679 * enum monitor_flags - monitor flags 680 * 681 * Monitor interface configuration flags. Note that these must be the bits 682 * according to the nl80211 flags. 683 * 684 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 685 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 686 * @MONITOR_FLAG_CONTROL: pass control frames 687 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 688 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 689 */ 690 enum monitor_flags { 691 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 692 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 693 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 694 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 695 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 696 }; 697 698 /** 699 * enum mpath_info_flags - mesh path information flags 700 * 701 * Used by the driver to indicate which info in &struct mpath_info it has filled 702 * in during get_station() or dump_station(). 703 * 704 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 705 * @MPATH_INFO_SN: @sn filled 706 * @MPATH_INFO_METRIC: @metric filled 707 * @MPATH_INFO_EXPTIME: @exptime filled 708 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 709 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 710 * @MPATH_INFO_FLAGS: @flags filled 711 */ 712 enum mpath_info_flags { 713 MPATH_INFO_FRAME_QLEN = BIT(0), 714 MPATH_INFO_SN = BIT(1), 715 MPATH_INFO_METRIC = BIT(2), 716 MPATH_INFO_EXPTIME = BIT(3), 717 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 718 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 719 MPATH_INFO_FLAGS = BIT(6), 720 }; 721 722 /** 723 * struct mpath_info - mesh path information 724 * 725 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 726 * 727 * @filled: bitfield of flags from &enum mpath_info_flags 728 * @frame_qlen: number of queued frames for this destination 729 * @sn: target sequence number 730 * @metric: metric (cost) of this mesh path 731 * @exptime: expiration time for the mesh path from now, in msecs 732 * @flags: mesh path flags 733 * @discovery_timeout: total mesh path discovery timeout, in msecs 734 * @discovery_retries: mesh path discovery retries 735 * @generation: generation number for nl80211 dumps. 736 * This number should increase every time the list of mesh paths 737 * changes, i.e. when a station is added or removed, so that 738 * userspace can tell whether it got a consistent snapshot. 739 */ 740 struct mpath_info { 741 u32 filled; 742 u32 frame_qlen; 743 u32 sn; 744 u32 metric; 745 u32 exptime; 746 u32 discovery_timeout; 747 u8 discovery_retries; 748 u8 flags; 749 750 int generation; 751 }; 752 753 /** 754 * struct bss_parameters - BSS parameters 755 * 756 * Used to change BSS parameters (mainly for AP mode). 757 * 758 * @use_cts_prot: Whether to use CTS protection 759 * (0 = no, 1 = yes, -1 = do not change) 760 * @use_short_preamble: Whether the use of short preambles is allowed 761 * (0 = no, 1 = yes, -1 = do not change) 762 * @use_short_slot_time: Whether the use of short slot time is allowed 763 * (0 = no, 1 = yes, -1 = do not change) 764 * @basic_rates: basic rates in IEEE 802.11 format 765 * (or NULL for no change) 766 * @basic_rates_len: number of basic rates 767 * @ap_isolate: do not forward packets between connected stations 768 * @ht_opmode: HT Operation mode 769 * (u16 = opmode, -1 = do not change) 770 */ 771 struct bss_parameters { 772 int use_cts_prot; 773 int use_short_preamble; 774 int use_short_slot_time; 775 u8 *basic_rates; 776 u8 basic_rates_len; 777 int ap_isolate; 778 int ht_opmode; 779 }; 780 781 /* 782 * struct mesh_config - 802.11s mesh configuration 783 * 784 * These parameters can be changed while the mesh is active. 785 */ 786 struct mesh_config { 787 /* Timeouts in ms */ 788 /* Mesh plink management parameters */ 789 u16 dot11MeshRetryTimeout; 790 u16 dot11MeshConfirmTimeout; 791 u16 dot11MeshHoldingTimeout; 792 u16 dot11MeshMaxPeerLinks; 793 u8 dot11MeshMaxRetries; 794 u8 dot11MeshTTL; 795 /* ttl used in path selection information elements */ 796 u8 element_ttl; 797 bool auto_open_plinks; 798 /* HWMP parameters */ 799 u8 dot11MeshHWMPmaxPREQretries; 800 u32 path_refresh_time; 801 u16 min_discovery_timeout; 802 u32 dot11MeshHWMPactivePathTimeout; 803 u16 dot11MeshHWMPpreqMinInterval; 804 u16 dot11MeshHWMPperrMinInterval; 805 u16 dot11MeshHWMPnetDiameterTraversalTime; 806 u8 dot11MeshHWMPRootMode; 807 u16 dot11MeshHWMPRannInterval; 808 /* This is missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol 809 * set to true only means that the station will announce others it's a 810 * mesh gate, but not necessarily using the gate announcement protocol. 811 * Still keeping the same nomenclature to be in sync with the spec. */ 812 bool dot11MeshGateAnnouncementProtocol; 813 bool dot11MeshForwarding; 814 s32 rssi_threshold; 815 }; 816 817 /** 818 * struct mesh_setup - 802.11s mesh setup configuration 819 * @mesh_id: the mesh ID 820 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 821 * @path_sel_proto: which path selection protocol to use 822 * @path_metric: which metric to use 823 * @ie: vendor information elements (optional) 824 * @ie_len: length of vendor information elements 825 * @is_authenticated: this mesh requires authentication 826 * @is_secure: this mesh uses security 827 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 828 * 829 * These parameters are fixed when the mesh is created. 830 */ 831 struct mesh_setup { 832 const u8 *mesh_id; 833 u8 mesh_id_len; 834 u8 path_sel_proto; 835 u8 path_metric; 836 const u8 *ie; 837 u8 ie_len; 838 bool is_authenticated; 839 bool is_secure; 840 int mcast_rate[IEEE80211_NUM_BANDS]; 841 }; 842 843 /** 844 * struct ieee80211_txq_params - TX queue parameters 845 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 846 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 847 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 848 * 1..32767] 849 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 850 * 1..32767] 851 * @aifs: Arbitration interframe space [0..255] 852 */ 853 struct ieee80211_txq_params { 854 enum nl80211_txq_q queue; 855 u16 txop; 856 u16 cwmin; 857 u16 cwmax; 858 u8 aifs; 859 }; 860 861 /* from net/wireless.h */ 862 struct wiphy; 863 864 /** 865 * DOC: Scanning and BSS list handling 866 * 867 * The scanning process itself is fairly simple, but cfg80211 offers quite 868 * a bit of helper functionality. To start a scan, the scan operation will 869 * be invoked with a scan definition. This scan definition contains the 870 * channels to scan, and the SSIDs to send probe requests for (including the 871 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 872 * probe. Additionally, a scan request may contain extra information elements 873 * that should be added to the probe request. The IEs are guaranteed to be 874 * well-formed, and will not exceed the maximum length the driver advertised 875 * in the wiphy structure. 876 * 877 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 878 * it is responsible for maintaining the BSS list; the driver should not 879 * maintain a list itself. For this notification, various functions exist. 880 * 881 * Since drivers do not maintain a BSS list, there are also a number of 882 * functions to search for a BSS and obtain information about it from the 883 * BSS structure cfg80211 maintains. The BSS list is also made available 884 * to userspace. 885 */ 886 887 /** 888 * struct cfg80211_ssid - SSID description 889 * @ssid: the SSID 890 * @ssid_len: length of the ssid 891 */ 892 struct cfg80211_ssid { 893 u8 ssid[IEEE80211_MAX_SSID_LEN]; 894 u8 ssid_len; 895 }; 896 897 /** 898 * struct cfg80211_scan_request - scan request description 899 * 900 * @ssids: SSIDs to scan for (active scan only) 901 * @n_ssids: number of SSIDs 902 * @channels: channels to scan on. 903 * @n_channels: total number of channels to scan 904 * @ie: optional information element(s) to add into Probe Request or %NULL 905 * @ie_len: length of ie in octets 906 * @rates: bitmap of rates to advertise for each band 907 * @wiphy: the wiphy this was for 908 * @dev: the interface 909 * @aborted: (internal) scan request was notified as aborted 910 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 911 */ 912 struct cfg80211_scan_request { 913 struct cfg80211_ssid *ssids; 914 int n_ssids; 915 u32 n_channels; 916 const u8 *ie; 917 size_t ie_len; 918 919 u32 rates[IEEE80211_NUM_BANDS]; 920 921 /* internal */ 922 struct wiphy *wiphy; 923 struct net_device *dev; 924 bool aborted; 925 bool no_cck; 926 927 /* keep last */ 928 struct ieee80211_channel *channels[0]; 929 }; 930 931 /** 932 * struct cfg80211_match_set - sets of attributes to match 933 * 934 * @ssid: SSID to be matched 935 */ 936 struct cfg80211_match_set { 937 struct cfg80211_ssid ssid; 938 }; 939 940 /** 941 * struct cfg80211_sched_scan_request - scheduled scan request description 942 * 943 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 944 * @n_ssids: number of SSIDs 945 * @n_channels: total number of channels to scan 946 * @interval: interval between each scheduled scan cycle 947 * @ie: optional information element(s) to add into Probe Request or %NULL 948 * @ie_len: length of ie in octets 949 * @match_sets: sets of parameters to be matched for a scan result 950 * entry to be considered valid and to be passed to the host 951 * (others are filtered out). 952 * If ommited, all results are passed. 953 * @n_match_sets: number of match sets 954 * @wiphy: the wiphy this was for 955 * @dev: the interface 956 * @channels: channels to scan 957 */ 958 struct cfg80211_sched_scan_request { 959 struct cfg80211_ssid *ssids; 960 int n_ssids; 961 u32 n_channels; 962 u32 interval; 963 const u8 *ie; 964 size_t ie_len; 965 struct cfg80211_match_set *match_sets; 966 int n_match_sets; 967 968 /* internal */ 969 struct wiphy *wiphy; 970 struct net_device *dev; 971 972 /* keep last */ 973 struct ieee80211_channel *channels[0]; 974 }; 975 976 /** 977 * enum cfg80211_signal_type - signal type 978 * 979 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 980 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 981 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 982 */ 983 enum cfg80211_signal_type { 984 CFG80211_SIGNAL_TYPE_NONE, 985 CFG80211_SIGNAL_TYPE_MBM, 986 CFG80211_SIGNAL_TYPE_UNSPEC, 987 }; 988 989 /** 990 * struct cfg80211_bss - BSS description 991 * 992 * This structure describes a BSS (which may also be a mesh network) 993 * for use in scan results and similar. 994 * 995 * @channel: channel this BSS is on 996 * @bssid: BSSID of the BSS 997 * @tsf: timestamp of last received update 998 * @beacon_interval: the beacon interval as from the frame 999 * @capability: the capability field in host byte order 1000 * @information_elements: the information elements (Note that there 1001 * is no guarantee that these are well-formed!); this is a pointer to 1002 * either the beacon_ies or proberesp_ies depending on whether Probe 1003 * Response frame has been received 1004 * @len_information_elements: total length of the information elements 1005 * @beacon_ies: the information elements from the last Beacon frame 1006 * @len_beacon_ies: total length of the beacon_ies 1007 * @proberesp_ies: the information elements from the last Probe Response frame 1008 * @len_proberesp_ies: total length of the proberesp_ies 1009 * @signal: signal strength value (type depends on the wiphy's signal_type) 1010 * @free_priv: function pointer to free private data 1011 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1012 */ 1013 struct cfg80211_bss { 1014 struct ieee80211_channel *channel; 1015 1016 u8 bssid[ETH_ALEN]; 1017 u64 tsf; 1018 u16 beacon_interval; 1019 u16 capability; 1020 u8 *information_elements; 1021 size_t len_information_elements; 1022 u8 *beacon_ies; 1023 size_t len_beacon_ies; 1024 u8 *proberesp_ies; 1025 size_t len_proberesp_ies; 1026 1027 s32 signal; 1028 1029 void (*free_priv)(struct cfg80211_bss *bss); 1030 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 1031 }; 1032 1033 /** 1034 * ieee80211_bss_get_ie - find IE with given ID 1035 * @bss: the bss to search 1036 * @ie: the IE ID 1037 * Returns %NULL if not found. 1038 */ 1039 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1040 1041 1042 /** 1043 * struct cfg80211_auth_request - Authentication request data 1044 * 1045 * This structure provides information needed to complete IEEE 802.11 1046 * authentication. 1047 * 1048 * @bss: The BSS to authenticate with. 1049 * @auth_type: Authentication type (algorithm) 1050 * @ie: Extra IEs to add to Authentication frame or %NULL 1051 * @ie_len: Length of ie buffer in octets 1052 * @key_len: length of WEP key for shared key authentication 1053 * @key_idx: index of WEP key for shared key authentication 1054 * @key: WEP key for shared key authentication 1055 */ 1056 struct cfg80211_auth_request { 1057 struct cfg80211_bss *bss; 1058 const u8 *ie; 1059 size_t ie_len; 1060 enum nl80211_auth_type auth_type; 1061 const u8 *key; 1062 u8 key_len, key_idx; 1063 }; 1064 1065 /** 1066 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1067 * 1068 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1069 */ 1070 enum cfg80211_assoc_req_flags { 1071 ASSOC_REQ_DISABLE_HT = BIT(0), 1072 }; 1073 1074 /** 1075 * struct cfg80211_assoc_request - (Re)Association request data 1076 * 1077 * This structure provides information needed to complete IEEE 802.11 1078 * (re)association. 1079 * @bss: The BSS to associate with. If the call is successful the driver 1080 * is given a reference that it must release, normally via a call to 1081 * cfg80211_send_rx_assoc(), or, if association timed out, with a 1082 * call to cfg80211_put_bss() (in addition to calling 1083 * cfg80211_send_assoc_timeout()) 1084 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1085 * @ie_len: Length of ie buffer in octets 1086 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1087 * @crypto: crypto settings 1088 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1089 * @flags: See &enum cfg80211_assoc_req_flags 1090 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1091 * will be used in ht_capa. Un-supported values will be ignored. 1092 * @ht_capa_mask: The bits of ht_capa which are to be used. 1093 */ 1094 struct cfg80211_assoc_request { 1095 struct cfg80211_bss *bss; 1096 const u8 *ie, *prev_bssid; 1097 size_t ie_len; 1098 struct cfg80211_crypto_settings crypto; 1099 bool use_mfp; 1100 u32 flags; 1101 struct ieee80211_ht_cap ht_capa; 1102 struct ieee80211_ht_cap ht_capa_mask; 1103 }; 1104 1105 /** 1106 * struct cfg80211_deauth_request - Deauthentication request data 1107 * 1108 * This structure provides information needed to complete IEEE 802.11 1109 * deauthentication. 1110 * 1111 * @bssid: the BSSID of the BSS to deauthenticate from 1112 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1113 * @ie_len: Length of ie buffer in octets 1114 * @reason_code: The reason code for the deauthentication 1115 */ 1116 struct cfg80211_deauth_request { 1117 const u8 *bssid; 1118 const u8 *ie; 1119 size_t ie_len; 1120 u16 reason_code; 1121 }; 1122 1123 /** 1124 * struct cfg80211_disassoc_request - Disassociation request data 1125 * 1126 * This structure provides information needed to complete IEEE 802.11 1127 * disassocation. 1128 * 1129 * @bss: the BSS to disassociate from 1130 * @ie: Extra IEs to add to Disassociation frame or %NULL 1131 * @ie_len: Length of ie buffer in octets 1132 * @reason_code: The reason code for the disassociation 1133 * @local_state_change: This is a request for a local state only, i.e., no 1134 * Disassociation frame is to be transmitted. 1135 */ 1136 struct cfg80211_disassoc_request { 1137 struct cfg80211_bss *bss; 1138 const u8 *ie; 1139 size_t ie_len; 1140 u16 reason_code; 1141 bool local_state_change; 1142 }; 1143 1144 /** 1145 * struct cfg80211_ibss_params - IBSS parameters 1146 * 1147 * This structure defines the IBSS parameters for the join_ibss() 1148 * method. 1149 * 1150 * @ssid: The SSID, will always be non-null. 1151 * @ssid_len: The length of the SSID, will always be non-zero. 1152 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1153 * search for IBSSs with a different BSSID. 1154 * @channel: The channel to use if no IBSS can be found to join. 1155 * @channel_type: channel type (HT mode) 1156 * @channel_fixed: The channel should be fixed -- do not search for 1157 * IBSSs to join on other channels. 1158 * @ie: information element(s) to include in the beacon 1159 * @ie_len: length of that 1160 * @beacon_interval: beacon interval to use 1161 * @privacy: this is a protected network, keys will be configured 1162 * after joining 1163 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1164 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1165 * required to assume that the port is unauthorized until authorized by 1166 * user space. Otherwise, port is marked authorized by default. 1167 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1168 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1169 */ 1170 struct cfg80211_ibss_params { 1171 u8 *ssid; 1172 u8 *bssid; 1173 struct ieee80211_channel *channel; 1174 enum nl80211_channel_type channel_type; 1175 u8 *ie; 1176 u8 ssid_len, ie_len; 1177 u16 beacon_interval; 1178 u32 basic_rates; 1179 bool channel_fixed; 1180 bool privacy; 1181 bool control_port; 1182 int mcast_rate[IEEE80211_NUM_BANDS]; 1183 }; 1184 1185 /** 1186 * struct cfg80211_connect_params - Connection parameters 1187 * 1188 * This structure provides information needed to complete IEEE 802.11 1189 * authentication and association. 1190 * 1191 * @channel: The channel to use or %NULL if not specified (auto-select based 1192 * on scan results) 1193 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1194 * results) 1195 * @ssid: SSID 1196 * @ssid_len: Length of ssid in octets 1197 * @auth_type: Authentication type (algorithm) 1198 * @ie: IEs for association request 1199 * @ie_len: Length of assoc_ie in octets 1200 * @privacy: indicates whether privacy-enabled APs should be used 1201 * @crypto: crypto settings 1202 * @key_len: length of WEP key for shared key authentication 1203 * @key_idx: index of WEP key for shared key authentication 1204 * @key: WEP key for shared key authentication 1205 * @flags: See &enum cfg80211_assoc_req_flags 1206 * @bg_scan_period: Background scan period in seconds 1207 * or -1 to indicate that default value is to be used. 1208 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1209 * will be used in ht_capa. Un-supported values will be ignored. 1210 * @ht_capa_mask: The bits of ht_capa which are to be used. 1211 */ 1212 struct cfg80211_connect_params { 1213 struct ieee80211_channel *channel; 1214 u8 *bssid; 1215 u8 *ssid; 1216 size_t ssid_len; 1217 enum nl80211_auth_type auth_type; 1218 u8 *ie; 1219 size_t ie_len; 1220 bool privacy; 1221 struct cfg80211_crypto_settings crypto; 1222 const u8 *key; 1223 u8 key_len, key_idx; 1224 u32 flags; 1225 int bg_scan_period; 1226 struct ieee80211_ht_cap ht_capa; 1227 struct ieee80211_ht_cap ht_capa_mask; 1228 }; 1229 1230 /** 1231 * enum wiphy_params_flags - set_wiphy_params bitfield values 1232 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1233 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1234 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1235 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1236 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1237 */ 1238 enum wiphy_params_flags { 1239 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1240 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1241 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1242 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1243 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1244 }; 1245 1246 /* 1247 * cfg80211_bitrate_mask - masks for bitrate control 1248 */ 1249 struct cfg80211_bitrate_mask { 1250 struct { 1251 u32 legacy; 1252 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; 1253 } control[IEEE80211_NUM_BANDS]; 1254 }; 1255 /** 1256 * struct cfg80211_pmksa - PMK Security Association 1257 * 1258 * This structure is passed to the set/del_pmksa() method for PMKSA 1259 * caching. 1260 * 1261 * @bssid: The AP's BSSID. 1262 * @pmkid: The PMK material itself. 1263 */ 1264 struct cfg80211_pmksa { 1265 u8 *bssid; 1266 u8 *pmkid; 1267 }; 1268 1269 /** 1270 * struct cfg80211_wowlan_trig_pkt_pattern - packet pattern 1271 * @mask: bitmask where to match pattern and where to ignore bytes, 1272 * one bit per byte, in same format as nl80211 1273 * @pattern: bytes to match where bitmask is 1 1274 * @pattern_len: length of pattern (in bytes) 1275 * 1276 * Internal note: @mask and @pattern are allocated in one chunk of 1277 * memory, free @mask only! 1278 */ 1279 struct cfg80211_wowlan_trig_pkt_pattern { 1280 u8 *mask, *pattern; 1281 int pattern_len; 1282 }; 1283 1284 /** 1285 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1286 * 1287 * This structure defines the enabled WoWLAN triggers for the device. 1288 * @any: wake up on any activity -- special trigger if device continues 1289 * operating as normal during suspend 1290 * @disconnect: wake up if getting disconnected 1291 * @magic_pkt: wake up on receiving magic packet 1292 * @patterns: wake up on receiving packet matching a pattern 1293 * @n_patterns: number of patterns 1294 * @gtk_rekey_failure: wake up on GTK rekey failure 1295 * @eap_identity_req: wake up on EAP identity request packet 1296 * @four_way_handshake: wake up on 4-way handshake 1297 * @rfkill_release: wake up when rfkill is released 1298 */ 1299 struct cfg80211_wowlan { 1300 bool any, disconnect, magic_pkt, gtk_rekey_failure, 1301 eap_identity_req, four_way_handshake, 1302 rfkill_release; 1303 struct cfg80211_wowlan_trig_pkt_pattern *patterns; 1304 int n_patterns; 1305 }; 1306 1307 /** 1308 * struct cfg80211_gtk_rekey_data - rekey data 1309 * @kek: key encryption key 1310 * @kck: key confirmation key 1311 * @replay_ctr: replay counter 1312 */ 1313 struct cfg80211_gtk_rekey_data { 1314 u8 kek[NL80211_KEK_LEN]; 1315 u8 kck[NL80211_KCK_LEN]; 1316 u8 replay_ctr[NL80211_REPLAY_CTR_LEN]; 1317 }; 1318 1319 /** 1320 * struct cfg80211_ops - backend description for wireless configuration 1321 * 1322 * This struct is registered by fullmac card drivers and/or wireless stacks 1323 * in order to handle configuration requests on their interfaces. 1324 * 1325 * All callbacks except where otherwise noted should return 0 1326 * on success or a negative error code. 1327 * 1328 * All operations are currently invoked under rtnl for consistency with the 1329 * wireless extensions but this is subject to reevaluation as soon as this 1330 * code is used more widely and we have a first user without wext. 1331 * 1332 * @suspend: wiphy device needs to be suspended. The variable @wow will 1333 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 1334 * configured for the device. 1335 * @resume: wiphy device needs to be resumed 1336 * 1337 * @add_virtual_intf: create a new virtual interface with the given name, 1338 * must set the struct wireless_dev's iftype. Beware: You must create 1339 * the new netdev in the wiphy's network namespace! Returns the netdev, 1340 * or an ERR_PTR. 1341 * 1342 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1343 * 1344 * @change_virtual_intf: change type/configuration of virtual interface, 1345 * keep the struct wireless_dev's iftype updated. 1346 * 1347 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1348 * when adding a group key. 1349 * 1350 * @get_key: get information about the key with the given parameters. 1351 * @mac_addr will be %NULL when requesting information for a group 1352 * key. All pointers given to the @callback function need not be valid 1353 * after it returns. This function should return an error if it is 1354 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1355 * 1356 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1357 * and @key_index, return -ENOENT if the key doesn't exist. 1358 * 1359 * @set_default_key: set the default key on an interface 1360 * 1361 * @set_default_mgmt_key: set the default management frame key on an interface 1362 * 1363 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 1364 * 1365 * @start_ap: Start acting in AP mode defined by the parameters. 1366 * @change_beacon: Change the beacon parameters for an access point mode 1367 * interface. This should reject the call when AP mode wasn't started. 1368 * @stop_ap: Stop being an AP, including stopping beaconing. 1369 * 1370 * @add_station: Add a new station. 1371 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1372 * @change_station: Modify a given station. Note that flags changes are not much 1373 * validated in cfg80211, in particular the auth/assoc/authorized flags 1374 * might come to the driver in invalid combinations -- make sure to check 1375 * them, also against the existing state! Also, supported_rates changes are 1376 * not checked in station mode -- drivers need to reject (or ignore) them 1377 * for anything but TDLS peers. 1378 * @get_station: get station information for the station identified by @mac 1379 * @dump_station: dump station callback -- resume dump at index @idx 1380 * 1381 * @add_mpath: add a fixed mesh path 1382 * @del_mpath: delete a given mesh path 1383 * @change_mpath: change a given mesh path 1384 * @get_mpath: get a mesh path for the given parameters 1385 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1386 * @join_mesh: join the mesh network with the specified parameters 1387 * @leave_mesh: leave the current mesh network 1388 * 1389 * @get_mesh_config: Get the current mesh configuration 1390 * 1391 * @update_mesh_config: Update mesh parameters on a running mesh. 1392 * The mask is a bitfield which tells us which parameters to 1393 * set, and which to leave alone. 1394 * 1395 * @change_bss: Modify parameters for a given BSS. 1396 * 1397 * @set_txq_params: Set TX queue parameters 1398 * 1399 * @set_channel: Set channel for a given wireless interface. Some devices 1400 * may support multi-channel operation (by channel hopping) so cfg80211 1401 * doesn't verify much. Note, however, that the passed netdev may be 1402 * %NULL as well if the user requested changing the channel for the 1403 * device itself, or for a monitor interface. 1404 * @get_channel: Get the current operating channel, should return %NULL if 1405 * there's no single defined operating channel if for example the 1406 * device implements channel hopping for multi-channel virtual interfaces. 1407 * 1408 * @scan: Request to do a scan. If returning zero, the scan request is given 1409 * the driver, and will be valid until passed to cfg80211_scan_done(). 1410 * For scan results, call cfg80211_inform_bss(); you can call this outside 1411 * the scan/scan_done bracket too. 1412 * 1413 * @auth: Request to authenticate with the specified peer 1414 * @assoc: Request to (re)associate with the specified peer 1415 * @deauth: Request to deauthenticate from the specified peer 1416 * @disassoc: Request to disassociate from the specified peer 1417 * 1418 * @connect: Connect to the ESS with the specified parameters. When connected, 1419 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1420 * If the connection fails for some reason, call cfg80211_connect_result() 1421 * with the status from the AP. 1422 * @disconnect: Disconnect from the BSS/ESS. 1423 * 1424 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1425 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1426 * to a merge. 1427 * @leave_ibss: Leave the IBSS. 1428 * 1429 * @set_wiphy_params: Notify that wiphy parameters have changed; 1430 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1431 * have changed. The actual parameter values are available in 1432 * struct wiphy. If returning an error, no value should be changed. 1433 * 1434 * @set_tx_power: set the transmit power according to the parameters, 1435 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). 1436 * @get_tx_power: store the current TX power into the dbm variable; 1437 * return 0 if successful 1438 * 1439 * @set_wds_peer: set the WDS peer for a WDS interface 1440 * 1441 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1442 * functions to adjust rfkill hw state 1443 * 1444 * @dump_survey: get site survey information. 1445 * 1446 * @remain_on_channel: Request the driver to remain awake on the specified 1447 * channel for the specified duration to complete an off-channel 1448 * operation (e.g., public action frame exchange). When the driver is 1449 * ready on the requested channel, it must indicate this with an event 1450 * notification by calling cfg80211_ready_on_channel(). 1451 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1452 * This allows the operation to be terminated prior to timeout based on 1453 * the duration value. 1454 * @mgmt_tx: Transmit a management frame. 1455 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1456 * frame on another channel 1457 * 1458 * @testmode_cmd: run a test mode command 1459 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 1460 * used by the function, but 0 and 1 must not be touched. Additionally, 1461 * return error codes other than -ENOBUFS and -ENOENT will terminate the 1462 * dump and return to userspace with an error, so be careful. If any data 1463 * was passed in from userspace then the data/len arguments will be present 1464 * and point to the data contained in %NL80211_ATTR_TESTDATA. 1465 * 1466 * @set_bitrate_mask: set the bitrate mask configuration 1467 * 1468 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1469 * devices running firmwares capable of generating the (re) association 1470 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1471 * @del_pmksa: Delete a cached PMKID. 1472 * @flush_pmksa: Flush all cached PMKIDs. 1473 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1474 * allows the driver to adjust the dynamic ps timeout value. 1475 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1476 * @sched_scan_start: Tell the driver to start a scheduled scan. 1477 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled 1478 * scan. The driver_initiated flag specifies whether the driver 1479 * itself has informed that the scan has stopped. 1480 * 1481 * @mgmt_frame_register: Notify driver that a management frame type was 1482 * registered. Note that this callback may not sleep, and cannot run 1483 * concurrently with itself. 1484 * 1485 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1486 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1487 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1488 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1489 * 1490 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1491 * 1492 * @set_ringparam: Set tx and rx ring sizes. 1493 * 1494 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1495 * 1496 * @tdls_mgmt: Transmit a TDLS management frame. 1497 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 1498 * 1499 * @probe_client: probe an associated client, must return a cookie that it 1500 * later passes to cfg80211_probe_status(). 1501 * 1502 * @set_noack_map: Set the NoAck Map for the TIDs. 1503 */ 1504 struct cfg80211_ops { 1505 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 1506 int (*resume)(struct wiphy *wiphy); 1507 1508 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1509 char *name, 1510 enum nl80211_iftype type, 1511 u32 *flags, 1512 struct vif_params *params); 1513 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1514 int (*change_virtual_intf)(struct wiphy *wiphy, 1515 struct net_device *dev, 1516 enum nl80211_iftype type, u32 *flags, 1517 struct vif_params *params); 1518 1519 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1520 u8 key_index, bool pairwise, const u8 *mac_addr, 1521 struct key_params *params); 1522 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1523 u8 key_index, bool pairwise, const u8 *mac_addr, 1524 void *cookie, 1525 void (*callback)(void *cookie, struct key_params*)); 1526 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1527 u8 key_index, bool pairwise, const u8 *mac_addr); 1528 int (*set_default_key)(struct wiphy *wiphy, 1529 struct net_device *netdev, 1530 u8 key_index, bool unicast, bool multicast); 1531 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1532 struct net_device *netdev, 1533 u8 key_index); 1534 1535 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 1536 struct cfg80211_ap_settings *settings); 1537 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 1538 struct cfg80211_beacon_data *info); 1539 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 1540 1541 1542 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1543 u8 *mac, struct station_parameters *params); 1544 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1545 u8 *mac); 1546 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1547 u8 *mac, struct station_parameters *params); 1548 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1549 u8 *mac, struct station_info *sinfo); 1550 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1551 int idx, u8 *mac, struct station_info *sinfo); 1552 1553 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1554 u8 *dst, u8 *next_hop); 1555 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1556 u8 *dst); 1557 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1558 u8 *dst, u8 *next_hop); 1559 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1560 u8 *dst, u8 *next_hop, 1561 struct mpath_info *pinfo); 1562 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1563 int idx, u8 *dst, u8 *next_hop, 1564 struct mpath_info *pinfo); 1565 int (*get_mesh_config)(struct wiphy *wiphy, 1566 struct net_device *dev, 1567 struct mesh_config *conf); 1568 int (*update_mesh_config)(struct wiphy *wiphy, 1569 struct net_device *dev, u32 mask, 1570 const struct mesh_config *nconf); 1571 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1572 const struct mesh_config *conf, 1573 const struct mesh_setup *setup); 1574 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1575 1576 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1577 struct bss_parameters *params); 1578 1579 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 1580 struct ieee80211_txq_params *params); 1581 1582 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1583 struct ieee80211_channel *chan, 1584 enum nl80211_channel_type channel_type); 1585 1586 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1587 struct cfg80211_scan_request *request); 1588 1589 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1590 struct cfg80211_auth_request *req); 1591 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1592 struct cfg80211_assoc_request *req); 1593 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1594 struct cfg80211_deauth_request *req); 1595 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1596 struct cfg80211_disassoc_request *req); 1597 1598 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1599 struct cfg80211_connect_params *sme); 1600 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1601 u16 reason_code); 1602 1603 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1604 struct cfg80211_ibss_params *params); 1605 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1606 1607 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1608 1609 int (*set_tx_power)(struct wiphy *wiphy, 1610 enum nl80211_tx_power_setting type, int mbm); 1611 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1612 1613 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1614 const u8 *addr); 1615 1616 void (*rfkill_poll)(struct wiphy *wiphy); 1617 1618 #ifdef CONFIG_NL80211_TESTMODE 1619 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1620 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 1621 struct netlink_callback *cb, 1622 void *data, int len); 1623 #endif 1624 1625 int (*set_bitrate_mask)(struct wiphy *wiphy, 1626 struct net_device *dev, 1627 const u8 *peer, 1628 const struct cfg80211_bitrate_mask *mask); 1629 1630 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1631 int idx, struct survey_info *info); 1632 1633 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1634 struct cfg80211_pmksa *pmksa); 1635 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1636 struct cfg80211_pmksa *pmksa); 1637 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1638 1639 int (*remain_on_channel)(struct wiphy *wiphy, 1640 struct net_device *dev, 1641 struct ieee80211_channel *chan, 1642 enum nl80211_channel_type channel_type, 1643 unsigned int duration, 1644 u64 *cookie); 1645 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1646 struct net_device *dev, 1647 u64 cookie); 1648 1649 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1650 struct ieee80211_channel *chan, bool offchan, 1651 enum nl80211_channel_type channel_type, 1652 bool channel_type_valid, unsigned int wait, 1653 const u8 *buf, size_t len, bool no_cck, 1654 bool dont_wait_for_ack, u64 *cookie); 1655 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1656 struct net_device *dev, 1657 u64 cookie); 1658 1659 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1660 bool enabled, int timeout); 1661 1662 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1663 struct net_device *dev, 1664 s32 rssi_thold, u32 rssi_hyst); 1665 1666 void (*mgmt_frame_register)(struct wiphy *wiphy, 1667 struct net_device *dev, 1668 u16 frame_type, bool reg); 1669 1670 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1671 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1672 1673 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 1674 void (*get_ringparam)(struct wiphy *wiphy, 1675 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1676 1677 int (*sched_scan_start)(struct wiphy *wiphy, 1678 struct net_device *dev, 1679 struct cfg80211_sched_scan_request *request); 1680 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 1681 1682 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 1683 struct cfg80211_gtk_rekey_data *data); 1684 1685 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1686 u8 *peer, u8 action_code, u8 dialog_token, 1687 u16 status_code, const u8 *buf, size_t len); 1688 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 1689 u8 *peer, enum nl80211_tdls_operation oper); 1690 1691 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 1692 const u8 *peer, u64 *cookie); 1693 1694 int (*set_noack_map)(struct wiphy *wiphy, 1695 struct net_device *dev, 1696 u16 noack_map); 1697 1698 struct ieee80211_channel *(*get_channel)(struct wiphy *wiphy); 1699 }; 1700 1701 /* 1702 * wireless hardware and networking interfaces structures 1703 * and registration/helper functions 1704 */ 1705 1706 /** 1707 * enum wiphy_flags - wiphy capability flags 1708 * 1709 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1710 * has its own custom regulatory domain and cannot identify the 1711 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1712 * we will disregard the first regulatory hint (when the 1713 * initiator is %REGDOM_SET_BY_CORE). 1714 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1715 * ignore regulatory domain settings until it gets its own regulatory 1716 * domain via its regulatory_hint() unless the regulatory hint is 1717 * from a country IE. After its gets its own regulatory domain it will 1718 * only allow further regulatory domain settings to further enhance 1719 * compliance. For example if channel 13 and 14 are disabled by this 1720 * regulatory domain no user regulatory domain can enable these channels 1721 * at a later time. This can be used for devices which do not have 1722 * calibration information guaranteed for frequencies or settings 1723 * outside of its regulatory domain. If used in combination with 1724 * WIPHY_FLAG_CUSTOM_REGULATORY the inspected country IE power settings 1725 * will be followed. 1726 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1727 * that passive scan flags and beaconing flags may not be lifted by 1728 * cfg80211 due to regulatory beacon hints. For more information on beacon 1729 * hints read the documenation for regulatory_hint_found_beacon() 1730 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1731 * wiphy at all 1732 * @WIPHY_FLAG_ENFORCE_COMBINATIONS: Set this flag to enforce interface 1733 * combinations for this device. This flag is used for backward 1734 * compatibility only until all drivers advertise combinations and 1735 * they will always be enforced. 1736 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1737 * by default -- this flag will be set depending on the kernel's default 1738 * on wiphy_new(), but can be changed by the driver if it has a good 1739 * reason to override the default 1740 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1741 * on a VLAN interface) 1742 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1743 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1744 * control port protocol ethertype. The device also honours the 1745 * control_port_no_encrypt flag. 1746 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1747 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 1748 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 1749 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 1750 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 1751 * firmware. 1752 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 1753 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 1754 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 1755 * link setup/discovery operations internally. Setup, discovery and 1756 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 1757 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 1758 * used for asking the driver/firmware to perform a TDLS operation. 1759 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 1760 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 1761 * when there are virtual interfaces in AP mode by calling 1762 * cfg80211_report_obss_beacon(). 1763 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 1764 * responds to probe-requests in hardware. 1765 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 1766 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 1767 */ 1768 enum wiphy_flags { 1769 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1770 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1771 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1772 WIPHY_FLAG_NETNS_OK = BIT(3), 1773 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1774 WIPHY_FLAG_4ADDR_AP = BIT(5), 1775 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1776 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1777 WIPHY_FLAG_IBSS_RSN = BIT(8), 1778 WIPHY_FLAG_MESH_AUTH = BIT(10), 1779 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 1780 WIPHY_FLAG_ENFORCE_COMBINATIONS = BIT(12), 1781 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 1782 WIPHY_FLAG_AP_UAPSD = BIT(14), 1783 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 1784 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 1785 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 1786 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 1787 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 1788 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 1789 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 1790 }; 1791 1792 /** 1793 * struct ieee80211_iface_limit - limit on certain interface types 1794 * @max: maximum number of interfaces of these types 1795 * @types: interface types (bits) 1796 */ 1797 struct ieee80211_iface_limit { 1798 u16 max; 1799 u16 types; 1800 }; 1801 1802 /** 1803 * struct ieee80211_iface_combination - possible interface combination 1804 * @limits: limits for the given interface types 1805 * @n_limits: number of limitations 1806 * @num_different_channels: can use up to this many different channels 1807 * @max_interfaces: maximum number of interfaces in total allowed in this 1808 * group 1809 * @beacon_int_infra_match: In this combination, the beacon intervals 1810 * between infrastructure and AP types must match. This is required 1811 * only in special cases. 1812 * 1813 * These examples can be expressed as follows: 1814 * 1815 * Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 1816 * 1817 * struct ieee80211_iface_limit limits1[] = { 1818 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1819 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 1820 * }; 1821 * struct ieee80211_iface_combination combination1 = { 1822 * .limits = limits1, 1823 * .n_limits = ARRAY_SIZE(limits1), 1824 * .max_interfaces = 2, 1825 * .beacon_int_infra_match = true, 1826 * }; 1827 * 1828 * 1829 * Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 1830 * 1831 * struct ieee80211_iface_limit limits2[] = { 1832 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 1833 * BIT(NL80211_IFTYPE_P2P_GO), }, 1834 * }; 1835 * struct ieee80211_iface_combination combination2 = { 1836 * .limits = limits2, 1837 * .n_limits = ARRAY_SIZE(limits2), 1838 * .max_interfaces = 8, 1839 * .num_different_channels = 1, 1840 * }; 1841 * 1842 * 1843 * Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 1844 * This allows for an infrastructure connection and three P2P connections. 1845 * 1846 * struct ieee80211_iface_limit limits3[] = { 1847 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1848 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 1849 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 1850 * }; 1851 * struct ieee80211_iface_combination combination3 = { 1852 * .limits = limits3, 1853 * .n_limits = ARRAY_SIZE(limits3), 1854 * .max_interfaces = 4, 1855 * .num_different_channels = 2, 1856 * }; 1857 */ 1858 struct ieee80211_iface_combination { 1859 const struct ieee80211_iface_limit *limits; 1860 u32 num_different_channels; 1861 u16 max_interfaces; 1862 u8 n_limits; 1863 bool beacon_int_infra_match; 1864 }; 1865 1866 struct mac_address { 1867 u8 addr[ETH_ALEN]; 1868 }; 1869 1870 struct ieee80211_txrx_stypes { 1871 u16 tx, rx; 1872 }; 1873 1874 /** 1875 * enum wiphy_wowlan_support_flags - WoWLAN support flags 1876 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 1877 * trigger that keeps the device operating as-is and 1878 * wakes up the host on any activity, for example a 1879 * received packet that passed filtering; note that the 1880 * packet should be preserved in that case 1881 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 1882 * (see nl80211.h) 1883 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 1884 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 1885 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 1886 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 1887 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 1888 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 1889 */ 1890 enum wiphy_wowlan_support_flags { 1891 WIPHY_WOWLAN_ANY = BIT(0), 1892 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 1893 WIPHY_WOWLAN_DISCONNECT = BIT(2), 1894 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 1895 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 1896 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 1897 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 1898 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 1899 }; 1900 1901 /** 1902 * struct wiphy_wowlan_support - WoWLAN support data 1903 * @flags: see &enum wiphy_wowlan_support_flags 1904 * @n_patterns: number of supported wakeup patterns 1905 * (see nl80211.h for the pattern definition) 1906 * @pattern_max_len: maximum length of each pattern 1907 * @pattern_min_len: minimum length of each pattern 1908 */ 1909 struct wiphy_wowlan_support { 1910 u32 flags; 1911 int n_patterns; 1912 int pattern_max_len; 1913 int pattern_min_len; 1914 }; 1915 1916 /** 1917 * struct wiphy - wireless hardware description 1918 * @reg_notifier: the driver's regulatory notification callback, 1919 * note that if your driver uses wiphy_apply_custom_regulatory() 1920 * the reg_notifier's request can be passed as NULL 1921 * @regd: the driver's regulatory domain, if one was requested via 1922 * the regulatory_hint() API. This can be used by the driver 1923 * on the reg_notifier() if it chooses to ignore future 1924 * regulatory domain changes caused by other drivers. 1925 * @signal_type: signal type reported in &struct cfg80211_bss. 1926 * @cipher_suites: supported cipher suites 1927 * @n_cipher_suites: number of supported cipher suites 1928 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1929 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1930 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1931 * -1 = fragmentation disabled, only odd values >= 256 used 1932 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1933 * @_net: the network namespace this wiphy currently lives in 1934 * @perm_addr: permanent MAC address of this device 1935 * @addr_mask: If the device supports multiple MAC addresses by masking, 1936 * set this to a mask with variable bits set to 1, e.g. if the last 1937 * four bits are variable then set it to 00:...:00:0f. The actual 1938 * variable bits shall be determined by the interfaces added, with 1939 * interfaces not matching the mask being rejected to be brought up. 1940 * @n_addresses: number of addresses in @addresses. 1941 * @addresses: If the device has more than one address, set this pointer 1942 * to a list of addresses (6 bytes each). The first one will be used 1943 * by default for perm_addr. In this case, the mask should be set to 1944 * all-zeroes. In this case it is assumed that the device can handle 1945 * the same number of arbitrary MAC addresses. 1946 * @registered: protects ->resume and ->suspend sysfs callbacks against 1947 * unregister hardware 1948 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1949 * automatically on wiphy renames 1950 * @dev: (virtual) struct device for this wiphy 1951 * @registered: helps synchronize suspend/resume with wiphy unregister 1952 * @wext: wireless extension handlers 1953 * @priv: driver private data (sized according to wiphy_new() parameter) 1954 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1955 * must be set by driver 1956 * @iface_combinations: Valid interface combinations array, should not 1957 * list single interface types. 1958 * @n_iface_combinations: number of entries in @iface_combinations array. 1959 * @software_iftypes: bitmask of software interface types, these are not 1960 * subject to any restrictions since they are purely managed in SW. 1961 * @flags: wiphy flags, see &enum wiphy_flags 1962 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 1963 * @bss_priv_size: each BSS struct has private data allocated with it, 1964 * this variable determines its size 1965 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1966 * any given scan 1967 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 1968 * for in any given scheduled scan 1969 * @max_match_sets: maximum number of match sets the device can handle 1970 * when performing a scheduled scan, 0 if filtering is not 1971 * supported. 1972 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1973 * add to probe request frames transmitted during a scan, must not 1974 * include fixed IEs like supported rates 1975 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 1976 * scans 1977 * @coverage_class: current coverage class 1978 * @fw_version: firmware version for ethtool reporting 1979 * @hw_version: hardware version for ethtool reporting 1980 * @max_num_pmkids: maximum number of PMKIDs supported by device 1981 * @privid: a pointer that drivers can use to identify if an arbitrary 1982 * wiphy is theirs, e.g. in global notifiers 1983 * @bands: information about bands/channels supported by this device 1984 * 1985 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1986 * transmitted through nl80211, points to an array indexed by interface 1987 * type 1988 * 1989 * @available_antennas_tx: bitmap of antennas which are available to be 1990 * configured as TX antennas. Antenna configuration commands will be 1991 * rejected unless this or @available_antennas_rx is set. 1992 * 1993 * @available_antennas_rx: bitmap of antennas which are available to be 1994 * configured as RX antennas. Antenna configuration commands will be 1995 * rejected unless this or @available_antennas_tx is set. 1996 * 1997 * @probe_resp_offload: 1998 * Bitmap of supported protocols for probe response offloading. 1999 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 2000 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2001 * 2002 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 2003 * may request, if implemented. 2004 * 2005 * @wowlan: WoWLAN support information 2006 * 2007 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 2008 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 2009 * If null, then none can be over-ridden. 2010 */ 2011 struct wiphy { 2012 /* assign these fields before you register the wiphy */ 2013 2014 /* permanent MAC address(es) */ 2015 u8 perm_addr[ETH_ALEN]; 2016 u8 addr_mask[ETH_ALEN]; 2017 2018 struct mac_address *addresses; 2019 2020 const struct ieee80211_txrx_stypes *mgmt_stypes; 2021 2022 const struct ieee80211_iface_combination *iface_combinations; 2023 int n_iface_combinations; 2024 u16 software_iftypes; 2025 2026 u16 n_addresses; 2027 2028 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 2029 u16 interface_modes; 2030 2031 u32 flags, features; 2032 2033 u32 ap_sme_capa; 2034 2035 enum cfg80211_signal_type signal_type; 2036 2037 int bss_priv_size; 2038 u8 max_scan_ssids; 2039 u8 max_sched_scan_ssids; 2040 u8 max_match_sets; 2041 u16 max_scan_ie_len; 2042 u16 max_sched_scan_ie_len; 2043 2044 int n_cipher_suites; 2045 const u32 *cipher_suites; 2046 2047 u8 retry_short; 2048 u8 retry_long; 2049 u32 frag_threshold; 2050 u32 rts_threshold; 2051 u8 coverage_class; 2052 2053 char fw_version[ETHTOOL_BUSINFO_LEN]; 2054 u32 hw_version; 2055 2056 struct wiphy_wowlan_support wowlan; 2057 2058 u16 max_remain_on_channel_duration; 2059 2060 u8 max_num_pmkids; 2061 2062 u32 available_antennas_tx; 2063 u32 available_antennas_rx; 2064 2065 /* 2066 * Bitmap of supported protocols for probe response offloading 2067 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 2068 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2069 */ 2070 u32 probe_resp_offload; 2071 2072 /* If multiple wiphys are registered and you're handed e.g. 2073 * a regular netdev with assigned ieee80211_ptr, you won't 2074 * know whether it points to a wiphy your driver has registered 2075 * or not. Assign this to something global to your driver to 2076 * help determine whether you own this wiphy or not. */ 2077 const void *privid; 2078 2079 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 2080 2081 /* Lets us get back the wiphy on the callback */ 2082 int (*reg_notifier)(struct wiphy *wiphy, 2083 struct regulatory_request *request); 2084 2085 /* fields below are read-only, assigned by cfg80211 */ 2086 2087 const struct ieee80211_regdomain *regd; 2088 2089 /* the item in /sys/class/ieee80211/ points to this, 2090 * you need use set_wiphy_dev() (see below) */ 2091 struct device dev; 2092 2093 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 2094 bool registered; 2095 2096 /* dir in debugfs: ieee80211/<wiphyname> */ 2097 struct dentry *debugfsdir; 2098 2099 const struct ieee80211_ht_cap *ht_capa_mod_mask; 2100 2101 #ifdef CONFIG_NET_NS 2102 /* the network namespace this phy lives in currently */ 2103 struct net *_net; 2104 #endif 2105 2106 #ifdef CONFIG_CFG80211_WEXT 2107 const struct iw_handler_def *wext; 2108 #endif 2109 2110 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 2111 }; 2112 2113 static inline struct net *wiphy_net(struct wiphy *wiphy) 2114 { 2115 return read_pnet(&wiphy->_net); 2116 } 2117 2118 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 2119 { 2120 write_pnet(&wiphy->_net, net); 2121 } 2122 2123 /** 2124 * wiphy_priv - return priv from wiphy 2125 * 2126 * @wiphy: the wiphy whose priv pointer to return 2127 */ 2128 static inline void *wiphy_priv(struct wiphy *wiphy) 2129 { 2130 BUG_ON(!wiphy); 2131 return &wiphy->priv; 2132 } 2133 2134 /** 2135 * priv_to_wiphy - return the wiphy containing the priv 2136 * 2137 * @priv: a pointer previously returned by wiphy_priv 2138 */ 2139 static inline struct wiphy *priv_to_wiphy(void *priv) 2140 { 2141 BUG_ON(!priv); 2142 return container_of(priv, struct wiphy, priv); 2143 } 2144 2145 /** 2146 * set_wiphy_dev - set device pointer for wiphy 2147 * 2148 * @wiphy: The wiphy whose device to bind 2149 * @dev: The device to parent it to 2150 */ 2151 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 2152 { 2153 wiphy->dev.parent = dev; 2154 } 2155 2156 /** 2157 * wiphy_dev - get wiphy dev pointer 2158 * 2159 * @wiphy: The wiphy whose device struct to look up 2160 */ 2161 static inline struct device *wiphy_dev(struct wiphy *wiphy) 2162 { 2163 return wiphy->dev.parent; 2164 } 2165 2166 /** 2167 * wiphy_name - get wiphy name 2168 * 2169 * @wiphy: The wiphy whose name to return 2170 */ 2171 static inline const char *wiphy_name(const struct wiphy *wiphy) 2172 { 2173 return dev_name(&wiphy->dev); 2174 } 2175 2176 /** 2177 * wiphy_new - create a new wiphy for use with cfg80211 2178 * 2179 * @ops: The configuration operations for this device 2180 * @sizeof_priv: The size of the private area to allocate 2181 * 2182 * Create a new wiphy and associate the given operations with it. 2183 * @sizeof_priv bytes are allocated for private use. 2184 * 2185 * The returned pointer must be assigned to each netdev's 2186 * ieee80211_ptr for proper operation. 2187 */ 2188 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 2189 2190 /** 2191 * wiphy_register - register a wiphy with cfg80211 2192 * 2193 * @wiphy: The wiphy to register. 2194 * 2195 * Returns a non-negative wiphy index or a negative error code. 2196 */ 2197 extern int wiphy_register(struct wiphy *wiphy); 2198 2199 /** 2200 * wiphy_unregister - deregister a wiphy from cfg80211 2201 * 2202 * @wiphy: The wiphy to unregister. 2203 * 2204 * After this call, no more requests can be made with this priv 2205 * pointer, but the call may sleep to wait for an outstanding 2206 * request that is being handled. 2207 */ 2208 extern void wiphy_unregister(struct wiphy *wiphy); 2209 2210 /** 2211 * wiphy_free - free wiphy 2212 * 2213 * @wiphy: The wiphy to free 2214 */ 2215 extern void wiphy_free(struct wiphy *wiphy); 2216 2217 /* internal structs */ 2218 struct cfg80211_conn; 2219 struct cfg80211_internal_bss; 2220 struct cfg80211_cached_keys; 2221 2222 /** 2223 * struct wireless_dev - wireless per-netdev state 2224 * 2225 * This structure must be allocated by the driver/stack 2226 * that uses the ieee80211_ptr field in struct net_device 2227 * (this is intentional so it can be allocated along with 2228 * the netdev.) 2229 * 2230 * @wiphy: pointer to hardware description 2231 * @iftype: interface type 2232 * @list: (private) Used to collect the interfaces 2233 * @netdev: (private) Used to reference back to the netdev 2234 * @current_bss: (private) Used by the internal configuration code 2235 * @channel: (private) Used by the internal configuration code to track 2236 * user-set AP, monitor and WDS channels for wireless extensions 2237 * @bssid: (private) Used by the internal configuration code 2238 * @ssid: (private) Used by the internal configuration code 2239 * @ssid_len: (private) Used by the internal configuration code 2240 * @mesh_id_len: (private) Used by the internal configuration code 2241 * @mesh_id_up_len: (private) Used by the internal configuration code 2242 * @wext: (private) Used by the internal wireless extensions compat code 2243 * @use_4addr: indicates 4addr mode is used on this interface, must be 2244 * set by driver (if supported) on add_interface BEFORE registering the 2245 * netdev and may otherwise be used by driver read-only, will be update 2246 * by cfg80211 on change_interface 2247 * @mgmt_registrations: list of registrations for management frames 2248 * @mgmt_registrations_lock: lock for the list 2249 * @mtx: mutex used to lock data in this struct 2250 * @cleanup_work: work struct used for cleanup that can't be done directly 2251 * @beacon_interval: beacon interval used on this device for transmitting 2252 * beacons, 0 when not valid 2253 */ 2254 struct wireless_dev { 2255 struct wiphy *wiphy; 2256 enum nl80211_iftype iftype; 2257 2258 /* the remainder of this struct should be private to cfg80211 */ 2259 struct list_head list; 2260 struct net_device *netdev; 2261 2262 struct list_head mgmt_registrations; 2263 spinlock_t mgmt_registrations_lock; 2264 2265 struct mutex mtx; 2266 2267 struct work_struct cleanup_work; 2268 2269 bool use_4addr; 2270 2271 /* currently used for IBSS and SME - might be rearranged later */ 2272 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2273 u8 ssid_len, mesh_id_len, mesh_id_up_len; 2274 enum { 2275 CFG80211_SME_IDLE, 2276 CFG80211_SME_CONNECTING, 2277 CFG80211_SME_CONNECTED, 2278 } sme_state; 2279 struct cfg80211_conn *conn; 2280 struct cfg80211_cached_keys *connect_keys; 2281 2282 struct list_head event_list; 2283 spinlock_t event_lock; 2284 2285 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 2286 struct ieee80211_channel *channel; 2287 2288 bool ps; 2289 int ps_timeout; 2290 2291 int beacon_interval; 2292 2293 u32 ap_unexpected_nlpid; 2294 2295 #ifdef CONFIG_CFG80211_WEXT 2296 /* wext data */ 2297 struct { 2298 struct cfg80211_ibss_params ibss; 2299 struct cfg80211_connect_params connect; 2300 struct cfg80211_cached_keys *keys; 2301 u8 *ie; 2302 size_t ie_len; 2303 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 2304 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2305 s8 default_key, default_mgmt_key; 2306 bool prev_bssid_valid; 2307 } wext; 2308 #endif 2309 }; 2310 2311 /** 2312 * wdev_priv - return wiphy priv from wireless_dev 2313 * 2314 * @wdev: The wireless device whose wiphy's priv pointer to return 2315 */ 2316 static inline void *wdev_priv(struct wireless_dev *wdev) 2317 { 2318 BUG_ON(!wdev); 2319 return wiphy_priv(wdev->wiphy); 2320 } 2321 2322 /** 2323 * DOC: Utility functions 2324 * 2325 * cfg80211 offers a number of utility functions that can be useful. 2326 */ 2327 2328 /** 2329 * ieee80211_channel_to_frequency - convert channel number to frequency 2330 * @chan: channel number 2331 * @band: band, necessary due to channel number overlap 2332 */ 2333 extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 2334 2335 /** 2336 * ieee80211_frequency_to_channel - convert frequency to channel number 2337 * @freq: center frequency 2338 */ 2339 extern int ieee80211_frequency_to_channel(int freq); 2340 2341 /* 2342 * Name indirection necessary because the ieee80211 code also has 2343 * a function named "ieee80211_get_channel", so if you include 2344 * cfg80211's header file you get cfg80211's version, if you try 2345 * to include both header files you'll (rightfully!) get a symbol 2346 * clash. 2347 */ 2348 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 2349 int freq); 2350 /** 2351 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 2352 * @wiphy: the struct wiphy to get the channel for 2353 * @freq: the center frequency of the channel 2354 */ 2355 static inline struct ieee80211_channel * 2356 ieee80211_get_channel(struct wiphy *wiphy, int freq) 2357 { 2358 return __ieee80211_get_channel(wiphy, freq); 2359 } 2360 2361 /** 2362 * ieee80211_get_response_rate - get basic rate for a given rate 2363 * 2364 * @sband: the band to look for rates in 2365 * @basic_rates: bitmap of basic rates 2366 * @bitrate: the bitrate for which to find the basic rate 2367 * 2368 * This function returns the basic rate corresponding to a given 2369 * bitrate, that is the next lower bitrate contained in the basic 2370 * rate map, which is, for this function, given as a bitmap of 2371 * indices of rates in the band's bitrate table. 2372 */ 2373 struct ieee80211_rate * 2374 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 2375 u32 basic_rates, int bitrate); 2376 2377 /* 2378 * Radiotap parsing functions -- for controlled injection support 2379 * 2380 * Implemented in net/wireless/radiotap.c 2381 * Documentation in Documentation/networking/radiotap-headers.txt 2382 */ 2383 2384 struct radiotap_align_size { 2385 uint8_t align:4, size:4; 2386 }; 2387 2388 struct ieee80211_radiotap_namespace { 2389 const struct radiotap_align_size *align_size; 2390 int n_bits; 2391 uint32_t oui; 2392 uint8_t subns; 2393 }; 2394 2395 struct ieee80211_radiotap_vendor_namespaces { 2396 const struct ieee80211_radiotap_namespace *ns; 2397 int n_ns; 2398 }; 2399 2400 /** 2401 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 2402 * @this_arg_index: index of current arg, valid after each successful call 2403 * to ieee80211_radiotap_iterator_next() 2404 * @this_arg: pointer to current radiotap arg; it is valid after each 2405 * call to ieee80211_radiotap_iterator_next() but also after 2406 * ieee80211_radiotap_iterator_init() where it will point to 2407 * the beginning of the actual data portion 2408 * @this_arg_size: length of the current arg, for convenience 2409 * @current_namespace: pointer to the current namespace definition 2410 * (or internally %NULL if the current namespace is unknown) 2411 * @is_radiotap_ns: indicates whether the current namespace is the default 2412 * radiotap namespace or not 2413 * 2414 * @_rtheader: pointer to the radiotap header we are walking through 2415 * @_max_length: length of radiotap header in cpu byte ordering 2416 * @_arg_index: next argument index 2417 * @_arg: next argument pointer 2418 * @_next_bitmap: internal pointer to next present u32 2419 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 2420 * @_vns: vendor namespace definitions 2421 * @_next_ns_data: beginning of the next namespace's data 2422 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 2423 * next bitmap word 2424 * 2425 * Describes the radiotap parser state. Fields prefixed with an underscore 2426 * must not be used by users of the parser, only by the parser internally. 2427 */ 2428 2429 struct ieee80211_radiotap_iterator { 2430 struct ieee80211_radiotap_header *_rtheader; 2431 const struct ieee80211_radiotap_vendor_namespaces *_vns; 2432 const struct ieee80211_radiotap_namespace *current_namespace; 2433 2434 unsigned char *_arg, *_next_ns_data; 2435 __le32 *_next_bitmap; 2436 2437 unsigned char *this_arg; 2438 int this_arg_index; 2439 int this_arg_size; 2440 2441 int is_radiotap_ns; 2442 2443 int _max_length; 2444 int _arg_index; 2445 uint32_t _bitmap_shifter; 2446 int _reset_on_ext; 2447 }; 2448 2449 extern int ieee80211_radiotap_iterator_init( 2450 struct ieee80211_radiotap_iterator *iterator, 2451 struct ieee80211_radiotap_header *radiotap_header, 2452 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 2453 2454 extern int ieee80211_radiotap_iterator_next( 2455 struct ieee80211_radiotap_iterator *iterator); 2456 2457 2458 extern const unsigned char rfc1042_header[6]; 2459 extern const unsigned char bridge_tunnel_header[6]; 2460 2461 /** 2462 * ieee80211_get_hdrlen_from_skb - get header length from data 2463 * 2464 * Given an skb with a raw 802.11 header at the data pointer this function 2465 * returns the 802.11 header length in bytes (not including encryption 2466 * headers). If the data in the sk_buff is too short to contain a valid 802.11 2467 * header the function returns 0. 2468 * 2469 * @skb: the frame 2470 */ 2471 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 2472 2473 /** 2474 * ieee80211_hdrlen - get header length in bytes from frame control 2475 * @fc: frame control field in little-endian format 2476 */ 2477 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 2478 2479 /** 2480 * DOC: Data path helpers 2481 * 2482 * In addition to generic utilities, cfg80211 also offers 2483 * functions that help implement the data path for devices 2484 * that do not do the 802.11/802.3 conversion on the device. 2485 */ 2486 2487 /** 2488 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 2489 * @skb: the 802.11 data frame 2490 * @addr: the device MAC address 2491 * @iftype: the virtual interface type 2492 */ 2493 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 2494 enum nl80211_iftype iftype); 2495 2496 /** 2497 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 2498 * @skb: the 802.3 frame 2499 * @addr: the device MAC address 2500 * @iftype: the virtual interface type 2501 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 2502 * @qos: build 802.11 QoS data frame 2503 */ 2504 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 2505 enum nl80211_iftype iftype, u8 *bssid, bool qos); 2506 2507 /** 2508 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 2509 * 2510 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 2511 * 802.3 frames. The @list will be empty if the decode fails. The 2512 * @skb is consumed after the function returns. 2513 * 2514 * @skb: The input IEEE 802.11n A-MSDU frame. 2515 * @list: The output list of 802.3 frames. It must be allocated and 2516 * initialized by by the caller. 2517 * @addr: The device MAC address. 2518 * @iftype: The device interface type. 2519 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 2520 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 2521 */ 2522 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 2523 const u8 *addr, enum nl80211_iftype iftype, 2524 const unsigned int extra_headroom, 2525 bool has_80211_header); 2526 2527 /** 2528 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 2529 * @skb: the data frame 2530 */ 2531 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 2532 2533 /** 2534 * cfg80211_find_ie - find information element in data 2535 * 2536 * @eid: element ID 2537 * @ies: data consisting of IEs 2538 * @len: length of data 2539 * 2540 * This function will return %NULL if the element ID could 2541 * not be found or if the element is invalid (claims to be 2542 * longer than the given data), or a pointer to the first byte 2543 * of the requested element, that is the byte containing the 2544 * element ID. There are no checks on the element length 2545 * other than having to fit into the given data. 2546 */ 2547 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2548 2549 /** 2550 * cfg80211_find_vendor_ie - find vendor specific information element in data 2551 * 2552 * @oui: vendor OUI 2553 * @oui_type: vendor-specific OUI type 2554 * @ies: data consisting of IEs 2555 * @len: length of data 2556 * 2557 * This function will return %NULL if the vendor specific element ID 2558 * could not be found or if the element is invalid (claims to be 2559 * longer than the given data), or a pointer to the first byte 2560 * of the requested element, that is the byte containing the 2561 * element ID. There are no checks on the element length 2562 * other than having to fit into the given data. 2563 */ 2564 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 2565 const u8 *ies, int len); 2566 2567 /** 2568 * DOC: Regulatory enforcement infrastructure 2569 * 2570 * TODO 2571 */ 2572 2573 /** 2574 * regulatory_hint - driver hint to the wireless core a regulatory domain 2575 * @wiphy: the wireless device giving the hint (used only for reporting 2576 * conflicts) 2577 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2578 * should be in. If @rd is set this should be NULL. Note that if you 2579 * set this to NULL you should still set rd->alpha2 to some accepted 2580 * alpha2. 2581 * 2582 * Wireless drivers can use this function to hint to the wireless core 2583 * what it believes should be the current regulatory domain by 2584 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2585 * domain should be in or by providing a completely build regulatory domain. 2586 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2587 * for a regulatory domain structure for the respective country. 2588 * 2589 * The wiphy must have been registered to cfg80211 prior to this call. 2590 * For cfg80211 drivers this means you must first use wiphy_register(), 2591 * for mac80211 drivers you must first use ieee80211_register_hw(). 2592 * 2593 * Drivers should check the return value, its possible you can get 2594 * an -ENOMEM. 2595 */ 2596 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2597 2598 /** 2599 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2600 * @wiphy: the wireless device we want to process the regulatory domain on 2601 * @regd: the custom regulatory domain to use for this wiphy 2602 * 2603 * Drivers can sometimes have custom regulatory domains which do not apply 2604 * to a specific country. Drivers can use this to apply such custom regulatory 2605 * domains. This routine must be called prior to wiphy registration. The 2606 * custom regulatory domain will be trusted completely and as such previous 2607 * default channel settings will be disregarded. If no rule is found for a 2608 * channel on the regulatory domain the channel will be disabled. 2609 */ 2610 extern void wiphy_apply_custom_regulatory( 2611 struct wiphy *wiphy, 2612 const struct ieee80211_regdomain *regd); 2613 2614 /** 2615 * freq_reg_info - get regulatory information for the given frequency 2616 * @wiphy: the wiphy for which we want to process this rule for 2617 * @center_freq: Frequency in KHz for which we want regulatory information for 2618 * @desired_bw_khz: the desired max bandwidth you want to use per 2619 * channel. Note that this is still 20 MHz if you want to use HT40 2620 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2621 * If set to 0 we'll assume you want the standard 20 MHz. 2622 * @reg_rule: the regulatory rule which we have for this frequency 2623 * 2624 * Use this function to get the regulatory rule for a specific frequency on 2625 * a given wireless device. If the device has a specific regulatory domain 2626 * it wants to follow we respect that unless a country IE has been received 2627 * and processed already. 2628 * 2629 * Returns 0 if it was able to find a valid regulatory rule which does 2630 * apply to the given center_freq otherwise it returns non-zero. It will 2631 * also return -ERANGE if we determine the given center_freq does not even have 2632 * a regulatory rule for a frequency range in the center_freq's band. See 2633 * freq_in_rule_band() for our current definition of a band -- this is purely 2634 * subjective and right now its 802.11 specific. 2635 */ 2636 extern int freq_reg_info(struct wiphy *wiphy, 2637 u32 center_freq, 2638 u32 desired_bw_khz, 2639 const struct ieee80211_reg_rule **reg_rule); 2640 2641 /* 2642 * callbacks for asynchronous cfg80211 methods, notification 2643 * functions and BSS handling helpers 2644 */ 2645 2646 /** 2647 * cfg80211_scan_done - notify that scan finished 2648 * 2649 * @request: the corresponding scan request 2650 * @aborted: set to true if the scan was aborted for any reason, 2651 * userspace will be notified of that 2652 */ 2653 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2654 2655 /** 2656 * cfg80211_sched_scan_results - notify that new scan results are available 2657 * 2658 * @wiphy: the wiphy which got scheduled scan results 2659 */ 2660 void cfg80211_sched_scan_results(struct wiphy *wiphy); 2661 2662 /** 2663 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 2664 * 2665 * @wiphy: the wiphy on which the scheduled scan stopped 2666 * 2667 * The driver can call this function to inform cfg80211 that the 2668 * scheduled scan had to be stopped, for whatever reason. The driver 2669 * is then called back via the sched_scan_stop operation when done. 2670 */ 2671 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 2672 2673 /** 2674 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2675 * 2676 * @wiphy: the wiphy reporting the BSS 2677 * @channel: The channel the frame was received on 2678 * @mgmt: the management frame (probe response or beacon) 2679 * @len: length of the management frame 2680 * @signal: the signal strength, type depends on the wiphy's signal_type 2681 * @gfp: context flags 2682 * 2683 * This informs cfg80211 that BSS information was found and 2684 * the BSS should be updated/added. 2685 * 2686 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2687 */ 2688 struct cfg80211_bss * __must_check 2689 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2690 struct ieee80211_channel *channel, 2691 struct ieee80211_mgmt *mgmt, size_t len, 2692 s32 signal, gfp_t gfp); 2693 2694 /** 2695 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2696 * 2697 * @wiphy: the wiphy reporting the BSS 2698 * @channel: The channel the frame was received on 2699 * @bssid: the BSSID of the BSS 2700 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 2701 * @capability: the capability field sent by the peer 2702 * @beacon_interval: the beacon interval announced by the peer 2703 * @ie: additional IEs sent by the peer 2704 * @ielen: length of the additional IEs 2705 * @signal: the signal strength, type depends on the wiphy's signal_type 2706 * @gfp: context flags 2707 * 2708 * This informs cfg80211 that BSS information was found and 2709 * the BSS should be updated/added. 2710 * 2711 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2712 */ 2713 struct cfg80211_bss * __must_check 2714 cfg80211_inform_bss(struct wiphy *wiphy, 2715 struct ieee80211_channel *channel, 2716 const u8 *bssid, u64 tsf, u16 capability, 2717 u16 beacon_interval, const u8 *ie, size_t ielen, 2718 s32 signal, gfp_t gfp); 2719 2720 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2721 struct ieee80211_channel *channel, 2722 const u8 *bssid, 2723 const u8 *ssid, size_t ssid_len, 2724 u16 capa_mask, u16 capa_val); 2725 static inline struct cfg80211_bss * 2726 cfg80211_get_ibss(struct wiphy *wiphy, 2727 struct ieee80211_channel *channel, 2728 const u8 *ssid, size_t ssid_len) 2729 { 2730 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2731 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2732 } 2733 2734 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2735 struct ieee80211_channel *channel, 2736 const u8 *meshid, size_t meshidlen, 2737 const u8 *meshcfg); 2738 /** 2739 * cfg80211_ref_bss - reference BSS struct 2740 * @bss: the BSS struct to reference 2741 * 2742 * Increments the refcount of the given BSS struct. 2743 */ 2744 void cfg80211_ref_bss(struct cfg80211_bss *bss); 2745 2746 /** 2747 * cfg80211_put_bss - unref BSS struct 2748 * @bss: the BSS struct 2749 * 2750 * Decrements the refcount of the given BSS struct. 2751 */ 2752 void cfg80211_put_bss(struct cfg80211_bss *bss); 2753 2754 /** 2755 * cfg80211_unlink_bss - unlink BSS from internal data structures 2756 * @wiphy: the wiphy 2757 * @bss: the bss to remove 2758 * 2759 * This function removes the given BSS from the internal data structures 2760 * thereby making it no longer show up in scan results etc. Use this 2761 * function when you detect a BSS is gone. Normally BSSes will also time 2762 * out, so it is not necessary to use this function at all. 2763 */ 2764 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2765 2766 /** 2767 * cfg80211_send_rx_auth - notification of processed authentication 2768 * @dev: network device 2769 * @buf: authentication frame (header + body) 2770 * @len: length of the frame data 2771 * 2772 * This function is called whenever an authentication has been processed in 2773 * station mode. The driver is required to call either this function or 2774 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2775 * call. This function may sleep. 2776 */ 2777 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2778 2779 /** 2780 * cfg80211_send_auth_timeout - notification of timed out authentication 2781 * @dev: network device 2782 * @addr: The MAC address of the device with which the authentication timed out 2783 * 2784 * This function may sleep. 2785 */ 2786 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2787 2788 /** 2789 * cfg80211_send_rx_assoc - notification of processed association 2790 * @dev: network device 2791 * @bss: the BSS struct association was requested for, the struct reference 2792 * is owned by cfg80211 after this call 2793 * @buf: (re)association response frame (header + body) 2794 * @len: length of the frame data 2795 * 2796 * This function is called whenever a (re)association response has been 2797 * processed in station mode. The driver is required to call either this 2798 * function or cfg80211_send_assoc_timeout() to indicate the result of 2799 * cfg80211_ops::assoc() call. This function may sleep. 2800 */ 2801 void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss, 2802 const u8 *buf, size_t len); 2803 2804 /** 2805 * cfg80211_send_assoc_timeout - notification of timed out association 2806 * @dev: network device 2807 * @addr: The MAC address of the device with which the association timed out 2808 * 2809 * This function may sleep. 2810 */ 2811 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2812 2813 /** 2814 * cfg80211_send_deauth - notification of processed deauthentication 2815 * @dev: network device 2816 * @buf: deauthentication frame (header + body) 2817 * @len: length of the frame data 2818 * 2819 * This function is called whenever deauthentication has been processed in 2820 * station mode. This includes both received deauthentication frames and 2821 * locally generated ones. This function may sleep. 2822 */ 2823 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2824 2825 /** 2826 * __cfg80211_send_deauth - notification of processed deauthentication 2827 * @dev: network device 2828 * @buf: deauthentication frame (header + body) 2829 * @len: length of the frame data 2830 * 2831 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2832 */ 2833 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2834 2835 /** 2836 * cfg80211_send_disassoc - notification of processed disassociation 2837 * @dev: network device 2838 * @buf: disassociation response frame (header + body) 2839 * @len: length of the frame data 2840 * 2841 * This function is called whenever disassociation has been processed in 2842 * station mode. This includes both received disassociation frames and locally 2843 * generated ones. This function may sleep. 2844 */ 2845 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2846 2847 /** 2848 * __cfg80211_send_disassoc - notification of processed disassociation 2849 * @dev: network device 2850 * @buf: disassociation response frame (header + body) 2851 * @len: length of the frame data 2852 * 2853 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2854 */ 2855 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2856 size_t len); 2857 2858 /** 2859 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2860 * @dev: network device 2861 * @buf: deauthentication frame (header + body) 2862 * @len: length of the frame data 2863 * 2864 * This function is called whenever a received Deauthentication frame has been 2865 * dropped in station mode because of MFP being used but the Deauthentication 2866 * frame was not protected. This function may sleep. 2867 */ 2868 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2869 size_t len); 2870 2871 /** 2872 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2873 * @dev: network device 2874 * @buf: disassociation frame (header + body) 2875 * @len: length of the frame data 2876 * 2877 * This function is called whenever a received Disassociation frame has been 2878 * dropped in station mode because of MFP being used but the Disassociation 2879 * frame was not protected. This function may sleep. 2880 */ 2881 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2882 size_t len); 2883 2884 /** 2885 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2886 * @dev: network device 2887 * @addr: The source MAC address of the frame 2888 * @key_type: The key type that the received frame used 2889 * @key_id: Key identifier (0..3). Can be -1 if missing. 2890 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2891 * @gfp: allocation flags 2892 * 2893 * This function is called whenever the local MAC detects a MIC failure in a 2894 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2895 * primitive. 2896 */ 2897 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2898 enum nl80211_key_type key_type, int key_id, 2899 const u8 *tsc, gfp_t gfp); 2900 2901 /** 2902 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2903 * 2904 * @dev: network device 2905 * @bssid: the BSSID of the IBSS joined 2906 * @gfp: allocation flags 2907 * 2908 * This function notifies cfg80211 that the device joined an IBSS or 2909 * switched to a different BSSID. Before this function can be called, 2910 * either a beacon has to have been received from the IBSS, or one of 2911 * the cfg80211_inform_bss{,_frame} functions must have been called 2912 * with the locally generated beacon -- this guarantees that there is 2913 * always a scan result for this IBSS. cfg80211 will handle the rest. 2914 */ 2915 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2916 2917 /** 2918 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 2919 * 2920 * @dev: network device 2921 * @macaddr: the MAC address of the new candidate 2922 * @ie: information elements advertised by the peer candidate 2923 * @ie_len: lenght of the information elements buffer 2924 * @gfp: allocation flags 2925 * 2926 * This function notifies cfg80211 that the mesh peer candidate has been 2927 * detected, most likely via a beacon or, less likely, via a probe response. 2928 * cfg80211 then sends a notification to userspace. 2929 */ 2930 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 2931 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 2932 2933 /** 2934 * DOC: RFkill integration 2935 * 2936 * RFkill integration in cfg80211 is almost invisible to drivers, 2937 * as cfg80211 automatically registers an rfkill instance for each 2938 * wireless device it knows about. Soft kill is also translated 2939 * into disconnecting and turning all interfaces off, drivers are 2940 * expected to turn off the device when all interfaces are down. 2941 * 2942 * However, devices may have a hard RFkill line, in which case they 2943 * also need to interact with the rfkill subsystem, via cfg80211. 2944 * They can do this with a few helper functions documented here. 2945 */ 2946 2947 /** 2948 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2949 * @wiphy: the wiphy 2950 * @blocked: block status 2951 */ 2952 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2953 2954 /** 2955 * wiphy_rfkill_start_polling - start polling rfkill 2956 * @wiphy: the wiphy 2957 */ 2958 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2959 2960 /** 2961 * wiphy_rfkill_stop_polling - stop polling rfkill 2962 * @wiphy: the wiphy 2963 */ 2964 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2965 2966 #ifdef CONFIG_NL80211_TESTMODE 2967 /** 2968 * DOC: Test mode 2969 * 2970 * Test mode is a set of utility functions to allow drivers to 2971 * interact with driver-specific tools to aid, for instance, 2972 * factory programming. 2973 * 2974 * This chapter describes how drivers interact with it, for more 2975 * information see the nl80211 book's chapter on it. 2976 */ 2977 2978 /** 2979 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2980 * @wiphy: the wiphy 2981 * @approxlen: an upper bound of the length of the data that will 2982 * be put into the skb 2983 * 2984 * This function allocates and pre-fills an skb for a reply to 2985 * the testmode command. Since it is intended for a reply, calling 2986 * it outside of the @testmode_cmd operation is invalid. 2987 * 2988 * The returned skb (or %NULL if any errors happen) is pre-filled 2989 * with the wiphy index and set up in a way that any data that is 2990 * put into the skb (with skb_put(), nla_put() or similar) will end 2991 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2992 * needs to be done with the skb is adding data for the corresponding 2993 * userspace tool which can then read that data out of the testdata 2994 * attribute. You must not modify the skb in any other way. 2995 * 2996 * When done, call cfg80211_testmode_reply() with the skb and return 2997 * its error code as the result of the @testmode_cmd operation. 2998 */ 2999 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 3000 int approxlen); 3001 3002 /** 3003 * cfg80211_testmode_reply - send the reply skb 3004 * @skb: The skb, must have been allocated with 3005 * cfg80211_testmode_alloc_reply_skb() 3006 * 3007 * Returns an error code or 0 on success, since calling this 3008 * function will usually be the last thing before returning 3009 * from the @testmode_cmd you should return the error code. 3010 * Note that this function consumes the skb regardless of the 3011 * return value. 3012 */ 3013 int cfg80211_testmode_reply(struct sk_buff *skb); 3014 3015 /** 3016 * cfg80211_testmode_alloc_event_skb - allocate testmode event 3017 * @wiphy: the wiphy 3018 * @approxlen: an upper bound of the length of the data that will 3019 * be put into the skb 3020 * @gfp: allocation flags 3021 * 3022 * This function allocates and pre-fills an skb for an event on the 3023 * testmode multicast group. 3024 * 3025 * The returned skb (or %NULL if any errors happen) is set up in the 3026 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 3027 * for an event. As there, you should simply add data to it that will 3028 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 3029 * not modify the skb in any other way. 3030 * 3031 * When done filling the skb, call cfg80211_testmode_event() with the 3032 * skb to send the event. 3033 */ 3034 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 3035 int approxlen, gfp_t gfp); 3036 3037 /** 3038 * cfg80211_testmode_event - send the event 3039 * @skb: The skb, must have been allocated with 3040 * cfg80211_testmode_alloc_event_skb() 3041 * @gfp: allocation flags 3042 * 3043 * This function sends the given @skb, which must have been allocated 3044 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 3045 * consumes it. 3046 */ 3047 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 3048 3049 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 3050 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 3051 #else 3052 #define CFG80211_TESTMODE_CMD(cmd) 3053 #define CFG80211_TESTMODE_DUMP(cmd) 3054 #endif 3055 3056 /** 3057 * cfg80211_connect_result - notify cfg80211 of connection result 3058 * 3059 * @dev: network device 3060 * @bssid: the BSSID of the AP 3061 * @req_ie: association request IEs (maybe be %NULL) 3062 * @req_ie_len: association request IEs length 3063 * @resp_ie: association response IEs (may be %NULL) 3064 * @resp_ie_len: assoc response IEs length 3065 * @status: status code, 0 for successful connection, use 3066 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 3067 * the real status code for failures. 3068 * @gfp: allocation flags 3069 * 3070 * It should be called by the underlying driver whenever connect() has 3071 * succeeded. 3072 */ 3073 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 3074 const u8 *req_ie, size_t req_ie_len, 3075 const u8 *resp_ie, size_t resp_ie_len, 3076 u16 status, gfp_t gfp); 3077 3078 /** 3079 * cfg80211_roamed - notify cfg80211 of roaming 3080 * 3081 * @dev: network device 3082 * @channel: the channel of the new AP 3083 * @bssid: the BSSID of the new AP 3084 * @req_ie: association request IEs (maybe be %NULL) 3085 * @req_ie_len: association request IEs length 3086 * @resp_ie: association response IEs (may be %NULL) 3087 * @resp_ie_len: assoc response IEs length 3088 * @gfp: allocation flags 3089 * 3090 * It should be called by the underlying driver whenever it roamed 3091 * from one AP to another while connected. 3092 */ 3093 void cfg80211_roamed(struct net_device *dev, 3094 struct ieee80211_channel *channel, 3095 const u8 *bssid, 3096 const u8 *req_ie, size_t req_ie_len, 3097 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3098 3099 /** 3100 * cfg80211_roamed_bss - notify cfg80211 of roaming 3101 * 3102 * @dev: network device 3103 * @bss: entry of bss to which STA got roamed 3104 * @req_ie: association request IEs (maybe be %NULL) 3105 * @req_ie_len: association request IEs length 3106 * @resp_ie: association response IEs (may be %NULL) 3107 * @resp_ie_len: assoc response IEs length 3108 * @gfp: allocation flags 3109 * 3110 * This is just a wrapper to notify cfg80211 of roaming event with driver 3111 * passing bss to avoid a race in timeout of the bss entry. It should be 3112 * called by the underlying driver whenever it roamed from one AP to another 3113 * while connected. Drivers which have roaming implemented in firmware 3114 * may use this function to avoid a race in bss entry timeout where the bss 3115 * entry of the new AP is seen in the driver, but gets timed out by the time 3116 * it is accessed in __cfg80211_roamed() due to delay in scheduling 3117 * rdev->event_work. In case of any failures, the reference is released 3118 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 3119 * it will be released while diconneting from the current bss. 3120 */ 3121 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 3122 const u8 *req_ie, size_t req_ie_len, 3123 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3124 3125 /** 3126 * cfg80211_disconnected - notify cfg80211 that connection was dropped 3127 * 3128 * @dev: network device 3129 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 3130 * @ie_len: length of IEs 3131 * @reason: reason code for the disconnection, set it to 0 if unknown 3132 * @gfp: allocation flags 3133 * 3134 * After it calls this function, the driver should enter an idle state 3135 * and not try to connect to any AP any more. 3136 */ 3137 void cfg80211_disconnected(struct net_device *dev, u16 reason, 3138 u8 *ie, size_t ie_len, gfp_t gfp); 3139 3140 /** 3141 * cfg80211_ready_on_channel - notification of remain_on_channel start 3142 * @dev: network device 3143 * @cookie: the request cookie 3144 * @chan: The current channel (from remain_on_channel request) 3145 * @channel_type: Channel type 3146 * @duration: Duration in milliseconds that the driver intents to remain on the 3147 * channel 3148 * @gfp: allocation flags 3149 */ 3150 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 3151 struct ieee80211_channel *chan, 3152 enum nl80211_channel_type channel_type, 3153 unsigned int duration, gfp_t gfp); 3154 3155 /** 3156 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 3157 * @dev: network device 3158 * @cookie: the request cookie 3159 * @chan: The current channel (from remain_on_channel request) 3160 * @channel_type: Channel type 3161 * @gfp: allocation flags 3162 */ 3163 void cfg80211_remain_on_channel_expired(struct net_device *dev, 3164 u64 cookie, 3165 struct ieee80211_channel *chan, 3166 enum nl80211_channel_type channel_type, 3167 gfp_t gfp); 3168 3169 3170 /** 3171 * cfg80211_new_sta - notify userspace about station 3172 * 3173 * @dev: the netdev 3174 * @mac_addr: the station's address 3175 * @sinfo: the station information 3176 * @gfp: allocation flags 3177 */ 3178 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 3179 struct station_info *sinfo, gfp_t gfp); 3180 3181 /** 3182 * cfg80211_del_sta - notify userspace about deletion of a station 3183 * 3184 * @dev: the netdev 3185 * @mac_addr: the station's address 3186 * @gfp: allocation flags 3187 */ 3188 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp); 3189 3190 /** 3191 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 3192 * @dev: network device 3193 * @freq: Frequency on which the frame was received in MHz 3194 * @sig_dbm: signal strength in mBm, or 0 if unknown 3195 * @buf: Management frame (header + body) 3196 * @len: length of the frame data 3197 * @gfp: context flags 3198 * 3199 * Returns %true if a user space application has registered for this frame. 3200 * For action frames, that makes it responsible for rejecting unrecognized 3201 * action frames; %false otherwise, in which case for action frames the 3202 * driver is responsible for rejecting the frame. 3203 * 3204 * This function is called whenever an Action frame is received for a station 3205 * mode interface, but is not processed in kernel. 3206 */ 3207 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, int sig_dbm, 3208 const u8 *buf, size_t len, gfp_t gfp); 3209 3210 /** 3211 * cfg80211_mgmt_tx_status - notification of TX status for management frame 3212 * @dev: network device 3213 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 3214 * @buf: Management frame (header + body) 3215 * @len: length of the frame data 3216 * @ack: Whether frame was acknowledged 3217 * @gfp: context flags 3218 * 3219 * This function is called whenever a management frame was requested to be 3220 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 3221 * transmission attempt. 3222 */ 3223 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 3224 const u8 *buf, size_t len, bool ack, gfp_t gfp); 3225 3226 3227 /** 3228 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 3229 * @dev: network device 3230 * @rssi_event: the triggered RSSI event 3231 * @gfp: context flags 3232 * 3233 * This function is called when a configured connection quality monitoring 3234 * rssi threshold reached event occurs. 3235 */ 3236 void cfg80211_cqm_rssi_notify(struct net_device *dev, 3237 enum nl80211_cqm_rssi_threshold_event rssi_event, 3238 gfp_t gfp); 3239 3240 /** 3241 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 3242 * @dev: network device 3243 * @peer: peer's MAC address 3244 * @num_packets: how many packets were lost -- should be a fixed threshold 3245 * but probably no less than maybe 50, or maybe a throughput dependent 3246 * threshold (to account for temporary interference) 3247 * @gfp: context flags 3248 */ 3249 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 3250 const u8 *peer, u32 num_packets, gfp_t gfp); 3251 3252 /** 3253 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 3254 * @dev: network device 3255 * @bssid: BSSID of AP (to avoid races) 3256 * @replay_ctr: new replay counter 3257 * @gfp: allocation flags 3258 */ 3259 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 3260 const u8 *replay_ctr, gfp_t gfp); 3261 3262 /** 3263 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 3264 * @dev: network device 3265 * @index: candidate index (the smaller the index, the higher the priority) 3266 * @bssid: BSSID of AP 3267 * @preauth: Whether AP advertises support for RSN pre-authentication 3268 * @gfp: allocation flags 3269 */ 3270 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 3271 const u8 *bssid, bool preauth, gfp_t gfp); 3272 3273 /** 3274 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 3275 * @dev: The device the frame matched to 3276 * @addr: the transmitter address 3277 * @gfp: context flags 3278 * 3279 * This function is used in AP mode (only!) to inform userspace that 3280 * a spurious class 3 frame was received, to be able to deauth the 3281 * sender. 3282 * Returns %true if the frame was passed to userspace (or this failed 3283 * for a reason other than not having a subscription.) 3284 */ 3285 bool cfg80211_rx_spurious_frame(struct net_device *dev, 3286 const u8 *addr, gfp_t gfp); 3287 3288 /** 3289 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 3290 * @dev: The device the frame matched to 3291 * @addr: the transmitter address 3292 * @gfp: context flags 3293 * 3294 * This function is used in AP mode (only!) to inform userspace that 3295 * an associated station sent a 4addr frame but that wasn't expected. 3296 * It is allowed and desirable to send this event only once for each 3297 * station to avoid event flooding. 3298 * Returns %true if the frame was passed to userspace (or this failed 3299 * for a reason other than not having a subscription.) 3300 */ 3301 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 3302 const u8 *addr, gfp_t gfp); 3303 3304 /** 3305 * cfg80211_probe_status - notify userspace about probe status 3306 * @dev: the device the probe was sent on 3307 * @addr: the address of the peer 3308 * @cookie: the cookie filled in @probe_client previously 3309 * @acked: indicates whether probe was acked or not 3310 * @gfp: allocation flags 3311 */ 3312 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 3313 u64 cookie, bool acked, gfp_t gfp); 3314 3315 /** 3316 * cfg80211_report_obss_beacon - report beacon from other APs 3317 * @wiphy: The wiphy that received the beacon 3318 * @frame: the frame 3319 * @len: length of the frame 3320 * @freq: frequency the frame was received on 3321 * @sig_dbm: signal strength in mBm, or 0 if unknown 3322 * @gfp: allocation flags 3323 * 3324 * Use this function to report to userspace when a beacon was 3325 * received. It is not useful to call this when there is no 3326 * netdev that is in AP/GO mode. 3327 */ 3328 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 3329 const u8 *frame, size_t len, 3330 int freq, int sig_dbm, gfp_t gfp); 3331 3332 /* 3333 * cfg80211_can_beacon_sec_chan - test if ht40 on extension channel can be used 3334 * @wiphy: the wiphy 3335 * @chan: main channel 3336 * @channel_type: HT mode 3337 */ 3338 int cfg80211_can_beacon_sec_chan(struct wiphy *wiphy, 3339 struct ieee80211_channel *chan, 3340 enum nl80211_channel_type channel_type); 3341 3342 /* 3343 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 3344 * @rate: given rate_info to calculate bitrate from 3345 * 3346 * return 0 if MCS index >= 32 3347 */ 3348 u16 cfg80211_calculate_bitrate(struct rate_info *rate); 3349 3350 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 3351 3352 /* wiphy_printk helpers, similar to dev_printk */ 3353 3354 #define wiphy_printk(level, wiphy, format, args...) \ 3355 dev_printk(level, &(wiphy)->dev, format, ##args) 3356 #define wiphy_emerg(wiphy, format, args...) \ 3357 dev_emerg(&(wiphy)->dev, format, ##args) 3358 #define wiphy_alert(wiphy, format, args...) \ 3359 dev_alert(&(wiphy)->dev, format, ##args) 3360 #define wiphy_crit(wiphy, format, args...) \ 3361 dev_crit(&(wiphy)->dev, format, ##args) 3362 #define wiphy_err(wiphy, format, args...) \ 3363 dev_err(&(wiphy)->dev, format, ##args) 3364 #define wiphy_warn(wiphy, format, args...) \ 3365 dev_warn(&(wiphy)->dev, format, ##args) 3366 #define wiphy_notice(wiphy, format, args...) \ 3367 dev_notice(&(wiphy)->dev, format, ##args) 3368 #define wiphy_info(wiphy, format, args...) \ 3369 dev_info(&(wiphy)->dev, format, ##args) 3370 3371 #define wiphy_debug(wiphy, format, args...) \ 3372 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 3373 3374 #define wiphy_dbg(wiphy, format, args...) \ 3375 dev_dbg(&(wiphy)->dev, format, ##args) 3376 3377 #if defined(VERBOSE_DEBUG) 3378 #define wiphy_vdbg wiphy_dbg 3379 #else 3380 #define wiphy_vdbg(wiphy, format, args...) \ 3381 ({ \ 3382 if (0) \ 3383 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 3384 0; \ 3385 }) 3386 #endif 3387 3388 /* 3389 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 3390 * of using a WARN/WARN_ON to get the message out, including the 3391 * file/line information and a backtrace. 3392 */ 3393 #define wiphy_WARN(wiphy, format, args...) \ 3394 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 3395 3396 #endif /* __NET_CFG80211_H */ 3397