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 * @beacon_found: helper to regulatory code to indicate when a beacon 124 * has been found on this channel. Use regulatory_hint_found_beacon() 125 * to enable this, this is useful only on 5 GHz band. 126 * @orig_mag: internal use 127 * @orig_mpwr: internal use 128 */ 129 struct ieee80211_channel { 130 enum ieee80211_band band; 131 u16 center_freq; 132 u16 hw_value; 133 u32 flags; 134 int max_antenna_gain; 135 int max_power; 136 bool beacon_found; 137 u32 orig_flags; 138 int orig_mag, orig_mpwr; 139 }; 140 141 /** 142 * enum ieee80211_rate_flags - rate flags 143 * 144 * Hardware/specification flags for rates. These are structured 145 * in a way that allows using the same bitrate structure for 146 * different bands/PHY modes. 147 * 148 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 149 * preamble on this bitrate; only relevant in 2.4GHz band and 150 * with CCK rates. 151 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 152 * when used with 802.11a (on the 5 GHz band); filled by the 153 * core code when registering the wiphy. 154 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 155 * when used with 802.11b (on the 2.4 GHz band); filled by the 156 * core code when registering the wiphy. 157 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 158 * when used with 802.11g (on the 2.4 GHz band); filled by the 159 * core code when registering the wiphy. 160 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 161 */ 162 enum ieee80211_rate_flags { 163 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 164 IEEE80211_RATE_MANDATORY_A = 1<<1, 165 IEEE80211_RATE_MANDATORY_B = 1<<2, 166 IEEE80211_RATE_MANDATORY_G = 1<<3, 167 IEEE80211_RATE_ERP_G = 1<<4, 168 }; 169 170 /** 171 * struct ieee80211_rate - bitrate definition 172 * 173 * This structure describes a bitrate that an 802.11 PHY can 174 * operate with. The two values @hw_value and @hw_value_short 175 * are only for driver use when pointers to this structure are 176 * passed around. 177 * 178 * @flags: rate-specific flags 179 * @bitrate: bitrate in units of 100 Kbps 180 * @hw_value: driver/hardware value for this rate 181 * @hw_value_short: driver/hardware value for this rate when 182 * short preamble is used 183 */ 184 struct ieee80211_rate { 185 u32 flags; 186 u16 bitrate; 187 u16 hw_value, hw_value_short; 188 }; 189 190 /** 191 * struct ieee80211_sta_ht_cap - STA's HT capabilities 192 * 193 * This structure describes most essential parameters needed 194 * to describe 802.11n HT capabilities for an STA. 195 * 196 * @ht_supported: is HT supported by the STA 197 * @cap: HT capabilities map as described in 802.11n spec 198 * @ampdu_factor: Maximum A-MPDU length factor 199 * @ampdu_density: Minimum A-MPDU spacing 200 * @mcs: Supported MCS rates 201 */ 202 struct ieee80211_sta_ht_cap { 203 u16 cap; /* use IEEE80211_HT_CAP_ */ 204 bool ht_supported; 205 u8 ampdu_factor; 206 u8 ampdu_density; 207 struct ieee80211_mcs_info mcs; 208 }; 209 210 /** 211 * struct ieee80211_supported_band - frequency band definition 212 * 213 * This structure describes a frequency band a wiphy 214 * is able to operate in. 215 * 216 * @channels: Array of channels the hardware can operate in 217 * in this band. 218 * @band: the band this structure represents 219 * @n_channels: Number of channels in @channels 220 * @bitrates: Array of bitrates the hardware can operate with 221 * in this band. Must be sorted to give a valid "supported 222 * rates" IE, i.e. CCK rates first, then OFDM. 223 * @n_bitrates: Number of bitrates in @bitrates 224 * @ht_cap: HT capabilities in this band 225 */ 226 struct ieee80211_supported_band { 227 struct ieee80211_channel *channels; 228 struct ieee80211_rate *bitrates; 229 enum ieee80211_band band; 230 int n_channels; 231 int n_bitrates; 232 struct ieee80211_sta_ht_cap ht_cap; 233 }; 234 235 /* 236 * Wireless hardware/device configuration structures and methods 237 */ 238 239 /** 240 * DOC: Actions and configuration 241 * 242 * Each wireless device and each virtual interface offer a set of configuration 243 * operations and other actions that are invoked by userspace. Each of these 244 * actions is described in the operations structure, and the parameters these 245 * operations use are described separately. 246 * 247 * Additionally, some operations are asynchronous and expect to get status 248 * information via some functions that drivers need to call. 249 * 250 * Scanning and BSS list handling with its associated functionality is described 251 * in a separate chapter. 252 */ 253 254 /** 255 * struct vif_params - describes virtual interface parameters 256 * @use_4addr: use 4-address frames 257 */ 258 struct vif_params { 259 int use_4addr; 260 }; 261 262 /** 263 * struct key_params - key information 264 * 265 * Information about a key 266 * 267 * @key: key material 268 * @key_len: length of key material 269 * @cipher: cipher suite selector 270 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 271 * with the get_key() callback, must be in little endian, 272 * length given by @seq_len. 273 * @seq_len: length of @seq. 274 */ 275 struct key_params { 276 u8 *key; 277 u8 *seq; 278 int key_len; 279 int seq_len; 280 u32 cipher; 281 }; 282 283 /** 284 * enum survey_info_flags - survey information flags 285 * 286 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 287 * @SURVEY_INFO_IN_USE: channel is currently being used 288 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 289 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 290 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 291 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 292 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 293 * 294 * Used by the driver to indicate which info in &struct survey_info 295 * it has filled in during the get_survey(). 296 */ 297 enum survey_info_flags { 298 SURVEY_INFO_NOISE_DBM = 1<<0, 299 SURVEY_INFO_IN_USE = 1<<1, 300 SURVEY_INFO_CHANNEL_TIME = 1<<2, 301 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 302 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 303 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 304 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 305 }; 306 307 /** 308 * struct survey_info - channel survey response 309 * 310 * @channel: the channel this survey record reports, mandatory 311 * @filled: bitflag of flags from &enum survey_info_flags 312 * @noise: channel noise in dBm. This and all following fields are 313 * optional 314 * @channel_time: amount of time in ms the radio spent on the channel 315 * @channel_time_busy: amount of time the primary channel was sensed busy 316 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 317 * @channel_time_rx: amount of time the radio spent receiving data 318 * @channel_time_tx: amount of time the radio spent transmitting data 319 * 320 * Used by dump_survey() to report back per-channel survey information. 321 * 322 * This structure can later be expanded with things like 323 * channel duty cycle etc. 324 */ 325 struct survey_info { 326 struct ieee80211_channel *channel; 327 u64 channel_time; 328 u64 channel_time_busy; 329 u64 channel_time_ext_busy; 330 u64 channel_time_rx; 331 u64 channel_time_tx; 332 u32 filled; 333 s8 noise; 334 }; 335 336 /** 337 * struct cfg80211_crypto_settings - Crypto settings 338 * @wpa_versions: indicates which, if any, WPA versions are enabled 339 * (from enum nl80211_wpa_versions) 340 * @cipher_group: group key cipher suite (or 0 if unset) 341 * @n_ciphers_pairwise: number of AP supported unicast ciphers 342 * @ciphers_pairwise: unicast key cipher suites 343 * @n_akm_suites: number of AKM suites 344 * @akm_suites: AKM suites 345 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 346 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 347 * required to assume that the port is unauthorized until authorized by 348 * user space. Otherwise, port is marked authorized by default. 349 * @control_port_ethertype: the control port protocol that should be 350 * allowed through even on unauthorized ports 351 * @control_port_no_encrypt: TRUE to prevent encryption of control port 352 * protocol frames. 353 */ 354 struct cfg80211_crypto_settings { 355 u32 wpa_versions; 356 u32 cipher_group; 357 int n_ciphers_pairwise; 358 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 359 int n_akm_suites; 360 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 361 bool control_port; 362 __be16 control_port_ethertype; 363 bool control_port_no_encrypt; 364 }; 365 366 /** 367 * struct beacon_parameters - beacon parameters 368 * 369 * Used to configure the beacon for an interface. 370 * 371 * @head: head portion of beacon (before TIM IE) 372 * or %NULL if not changed 373 * @tail: tail portion of beacon (after TIM IE) 374 * or %NULL if not changed 375 * @interval: beacon interval or zero if not changed 376 * @dtim_period: DTIM period or zero if not changed 377 * @head_len: length of @head 378 * @tail_len: length of @tail 379 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 380 * user space) 381 * @ssid_len: length of @ssid 382 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 383 * @crypto: crypto settings 384 * @privacy: the BSS uses privacy 385 * @auth_type: Authentication type (algorithm) 386 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 387 * @beacon_ies_len: length of beacon_ies in octets 388 * @proberesp_ies: extra information element(s) to add into Probe Response 389 * frames or %NULL 390 * @proberesp_ies_len: length of proberesp_ies in octets 391 * @assocresp_ies: extra information element(s) to add into (Re)Association 392 * Response frames or %NULL 393 * @assocresp_ies_len: length of assocresp_ies in octets 394 * @probe_resp_len: length of probe response template (@probe_resp) 395 * @probe_resp: probe response template (AP mode only) 396 */ 397 struct beacon_parameters { 398 u8 *head, *tail; 399 int interval, dtim_period; 400 int head_len, tail_len; 401 const u8 *ssid; 402 size_t ssid_len; 403 enum nl80211_hidden_ssid hidden_ssid; 404 struct cfg80211_crypto_settings crypto; 405 bool privacy; 406 enum nl80211_auth_type auth_type; 407 const u8 *beacon_ies; 408 size_t beacon_ies_len; 409 const u8 *proberesp_ies; 410 size_t proberesp_ies_len; 411 const u8 *assocresp_ies; 412 size_t assocresp_ies_len; 413 int probe_resp_len; 414 u8 *probe_resp; 415 }; 416 417 /** 418 * enum plink_action - actions to perform in mesh peers 419 * 420 * @PLINK_ACTION_INVALID: action 0 is reserved 421 * @PLINK_ACTION_OPEN: start mesh peer link establishment 422 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 423 */ 424 enum plink_actions { 425 PLINK_ACTION_INVALID, 426 PLINK_ACTION_OPEN, 427 PLINK_ACTION_BLOCK, 428 }; 429 430 /** 431 * enum station_parameters_apply_mask - station parameter values to apply 432 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 433 * 434 * Not all station parameters have in-band "no change" signalling, 435 * for those that don't these flags will are used. 436 */ 437 enum station_parameters_apply_mask { 438 STATION_PARAM_APPLY_UAPSD = BIT(0), 439 }; 440 441 /** 442 * struct station_parameters - station parameters 443 * 444 * Used to change and create a new station. 445 * 446 * @vlan: vlan interface station should belong to 447 * @supported_rates: supported rates in IEEE 802.11 format 448 * (or NULL for no change) 449 * @supported_rates_len: number of supported rates 450 * @sta_flags_mask: station flags that changed 451 * (bitmask of BIT(NL80211_STA_FLAG_...)) 452 * @sta_flags_set: station flags values 453 * (bitmask of BIT(NL80211_STA_FLAG_...)) 454 * @listen_interval: listen interval or -1 for no change 455 * @aid: AID or zero for no change 456 * @plink_action: plink action to take 457 * @plink_state: set the peer link state for a station 458 * @ht_capa: HT capabilities of station 459 * @uapsd_queues: bitmap of queues configured for uapsd. same format 460 * as the AC bitmap in the QoS info field 461 * @max_sp: max Service Period. same format as the MAX_SP in the 462 * QoS info field (but already shifted down) 463 * @sta_modify_mask: bitmap indicating which parameters changed 464 * (for those that don't have a natural "no change" value), 465 * see &enum station_parameters_apply_mask 466 */ 467 struct station_parameters { 468 u8 *supported_rates; 469 struct net_device *vlan; 470 u32 sta_flags_mask, sta_flags_set; 471 u32 sta_modify_mask; 472 int listen_interval; 473 u16 aid; 474 u8 supported_rates_len; 475 u8 plink_action; 476 u8 plink_state; 477 struct ieee80211_ht_cap *ht_capa; 478 u8 uapsd_queues; 479 u8 max_sp; 480 }; 481 482 /** 483 * enum station_info_flags - station information flags 484 * 485 * Used by the driver to indicate which info in &struct station_info 486 * it has filled in during get_station() or dump_station(). 487 * 488 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 489 * @STATION_INFO_RX_BYTES: @rx_bytes filled 490 * @STATION_INFO_TX_BYTES: @tx_bytes filled 491 * @STATION_INFO_LLID: @llid filled 492 * @STATION_INFO_PLID: @plid filled 493 * @STATION_INFO_PLINK_STATE: @plink_state filled 494 * @STATION_INFO_SIGNAL: @signal filled 495 * @STATION_INFO_TX_BITRATE: @txrate fields are filled 496 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 497 * @STATION_INFO_RX_PACKETS: @rx_packets filled 498 * @STATION_INFO_TX_PACKETS: @tx_packets filled 499 * @STATION_INFO_TX_RETRIES: @tx_retries filled 500 * @STATION_INFO_TX_FAILED: @tx_failed filled 501 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 502 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 503 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled 504 * @STATION_INFO_BSS_PARAM: @bss_param filled 505 * @STATION_INFO_CONNECTED_TIME: @connected_time filled 506 * @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled 507 * @STATION_INFO_STA_FLAGS: @sta_flags filled 508 * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled 509 */ 510 enum station_info_flags { 511 STATION_INFO_INACTIVE_TIME = 1<<0, 512 STATION_INFO_RX_BYTES = 1<<1, 513 STATION_INFO_TX_BYTES = 1<<2, 514 STATION_INFO_LLID = 1<<3, 515 STATION_INFO_PLID = 1<<4, 516 STATION_INFO_PLINK_STATE = 1<<5, 517 STATION_INFO_SIGNAL = 1<<6, 518 STATION_INFO_TX_BITRATE = 1<<7, 519 STATION_INFO_RX_PACKETS = 1<<8, 520 STATION_INFO_TX_PACKETS = 1<<9, 521 STATION_INFO_TX_RETRIES = 1<<10, 522 STATION_INFO_TX_FAILED = 1<<11, 523 STATION_INFO_RX_DROP_MISC = 1<<12, 524 STATION_INFO_SIGNAL_AVG = 1<<13, 525 STATION_INFO_RX_BITRATE = 1<<14, 526 STATION_INFO_BSS_PARAM = 1<<15, 527 STATION_INFO_CONNECTED_TIME = 1<<16, 528 STATION_INFO_ASSOC_REQ_IES = 1<<17, 529 STATION_INFO_STA_FLAGS = 1<<18, 530 STATION_INFO_BEACON_LOSS_COUNT = 1<<19 531 }; 532 533 /** 534 * enum station_info_rate_flags - bitrate info flags 535 * 536 * Used by the driver to indicate the specific rate transmission 537 * type for 802.11n transmissions. 538 * 539 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 540 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 541 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 542 */ 543 enum rate_info_flags { 544 RATE_INFO_FLAGS_MCS = 1<<0, 545 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 546 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 547 }; 548 549 /** 550 * struct rate_info - bitrate information 551 * 552 * Information about a receiving or transmitting bitrate 553 * 554 * @flags: bitflag of flags from &enum rate_info_flags 555 * @mcs: mcs index if struct describes a 802.11n bitrate 556 * @legacy: bitrate in 100kbit/s for 802.11abg 557 */ 558 struct rate_info { 559 u8 flags; 560 u8 mcs; 561 u16 legacy; 562 }; 563 564 /** 565 * enum station_info_rate_flags - bitrate info flags 566 * 567 * Used by the driver to indicate the specific rate transmission 568 * type for 802.11n transmissions. 569 * 570 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 571 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 572 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 573 */ 574 enum bss_param_flags { 575 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 576 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 577 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 578 }; 579 580 /** 581 * struct sta_bss_parameters - BSS parameters for the attached station 582 * 583 * Information about the currently associated BSS 584 * 585 * @flags: bitflag of flags from &enum bss_param_flags 586 * @dtim_period: DTIM period for the BSS 587 * @beacon_interval: beacon interval 588 */ 589 struct sta_bss_parameters { 590 u8 flags; 591 u8 dtim_period; 592 u16 beacon_interval; 593 }; 594 595 /** 596 * struct station_info - station information 597 * 598 * Station information filled by driver for get_station() and dump_station. 599 * 600 * @filled: bitflag of flags from &enum station_info_flags 601 * @connected_time: time(in secs) since a station is last connected 602 * @inactive_time: time since last station activity (tx/rx) in milliseconds 603 * @rx_bytes: bytes received from this station 604 * @tx_bytes: bytes transmitted to this station 605 * @llid: mesh local link id 606 * @plid: mesh peer link id 607 * @plink_state: mesh peer link state 608 * @signal: signal strength of last received packet in dBm 609 * @signal_avg: signal strength average in dBm 610 * @txrate: current unicast bitrate from this station 611 * @rxrate: current unicast bitrate to this station 612 * @rx_packets: packets received from this station 613 * @tx_packets: packets transmitted to this station 614 * @tx_retries: cumulative retry counts 615 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 616 * @rx_dropped_misc: Dropped for un-specified reason. 617 * @bss_param: current BSS parameters 618 * @generation: generation number for nl80211 dumps. 619 * This number should increase every time the list of stations 620 * changes, i.e. when a station is added or removed, so that 621 * userspace can tell whether it got a consistent snapshot. 622 * @assoc_req_ies: IEs from (Re)Association Request. 623 * This is used only when in AP mode with drivers that do not use 624 * user space MLME/SME implementation. The information is provided for 625 * the cfg80211_new_sta() calls to notify user space of the IEs. 626 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 627 * @sta_flags: station flags mask & values 628 * @beacon_loss_count: Number of times beacon loss event has triggered. 629 */ 630 struct station_info { 631 u32 filled; 632 u32 connected_time; 633 u32 inactive_time; 634 u32 rx_bytes; 635 u32 tx_bytes; 636 u16 llid; 637 u16 plid; 638 u8 plink_state; 639 s8 signal; 640 s8 signal_avg; 641 struct rate_info txrate; 642 struct rate_info rxrate; 643 u32 rx_packets; 644 u32 tx_packets; 645 u32 tx_retries; 646 u32 tx_failed; 647 u32 rx_dropped_misc; 648 struct sta_bss_parameters bss_param; 649 struct nl80211_sta_flag_update sta_flags; 650 651 int generation; 652 653 const u8 *assoc_req_ies; 654 size_t assoc_req_ies_len; 655 656 u32 beacon_loss_count; 657 658 /* 659 * Note: Add a new enum station_info_flags value for each new field and 660 * use it to check which fields are initialized. 661 */ 662 }; 663 664 /** 665 * enum monitor_flags - monitor flags 666 * 667 * Monitor interface configuration flags. Note that these must be the bits 668 * according to the nl80211 flags. 669 * 670 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 671 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 672 * @MONITOR_FLAG_CONTROL: pass control frames 673 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 674 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 675 */ 676 enum monitor_flags { 677 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 678 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 679 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 680 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 681 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 682 }; 683 684 /** 685 * enum mpath_info_flags - mesh path information flags 686 * 687 * Used by the driver to indicate which info in &struct mpath_info it has filled 688 * in during get_station() or dump_station(). 689 * 690 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 691 * @MPATH_INFO_SN: @sn filled 692 * @MPATH_INFO_METRIC: @metric filled 693 * @MPATH_INFO_EXPTIME: @exptime filled 694 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 695 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 696 * @MPATH_INFO_FLAGS: @flags filled 697 */ 698 enum mpath_info_flags { 699 MPATH_INFO_FRAME_QLEN = BIT(0), 700 MPATH_INFO_SN = BIT(1), 701 MPATH_INFO_METRIC = BIT(2), 702 MPATH_INFO_EXPTIME = BIT(3), 703 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 704 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 705 MPATH_INFO_FLAGS = BIT(6), 706 }; 707 708 /** 709 * struct mpath_info - mesh path information 710 * 711 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 712 * 713 * @filled: bitfield of flags from &enum mpath_info_flags 714 * @frame_qlen: number of queued frames for this destination 715 * @sn: target sequence number 716 * @metric: metric (cost) of this mesh path 717 * @exptime: expiration time for the mesh path from now, in msecs 718 * @flags: mesh path flags 719 * @discovery_timeout: total mesh path discovery timeout, in msecs 720 * @discovery_retries: mesh path discovery retries 721 * @generation: generation number for nl80211 dumps. 722 * This number should increase every time the list of mesh paths 723 * changes, i.e. when a station is added or removed, so that 724 * userspace can tell whether it got a consistent snapshot. 725 */ 726 struct mpath_info { 727 u32 filled; 728 u32 frame_qlen; 729 u32 sn; 730 u32 metric; 731 u32 exptime; 732 u32 discovery_timeout; 733 u8 discovery_retries; 734 u8 flags; 735 736 int generation; 737 }; 738 739 /** 740 * struct bss_parameters - BSS parameters 741 * 742 * Used to change BSS parameters (mainly for AP mode). 743 * 744 * @use_cts_prot: Whether to use CTS protection 745 * (0 = no, 1 = yes, -1 = do not change) 746 * @use_short_preamble: Whether the use of short preambles is allowed 747 * (0 = no, 1 = yes, -1 = do not change) 748 * @use_short_slot_time: Whether the use of short slot time is allowed 749 * (0 = no, 1 = yes, -1 = do not change) 750 * @basic_rates: basic rates in IEEE 802.11 format 751 * (or NULL for no change) 752 * @basic_rates_len: number of basic rates 753 * @ap_isolate: do not forward packets between connected stations 754 * @ht_opmode: HT Operation mode 755 * (u16 = opmode, -1 = do not change) 756 */ 757 struct bss_parameters { 758 int use_cts_prot; 759 int use_short_preamble; 760 int use_short_slot_time; 761 u8 *basic_rates; 762 u8 basic_rates_len; 763 int ap_isolate; 764 int ht_opmode; 765 }; 766 767 /* 768 * struct mesh_config - 802.11s mesh configuration 769 * 770 * These parameters can be changed while the mesh is active. 771 */ 772 struct mesh_config { 773 /* Timeouts in ms */ 774 /* Mesh plink management parameters */ 775 u16 dot11MeshRetryTimeout; 776 u16 dot11MeshConfirmTimeout; 777 u16 dot11MeshHoldingTimeout; 778 u16 dot11MeshMaxPeerLinks; 779 u8 dot11MeshMaxRetries; 780 u8 dot11MeshTTL; 781 /* ttl used in path selection information elements */ 782 u8 element_ttl; 783 bool auto_open_plinks; 784 /* HWMP parameters */ 785 u8 dot11MeshHWMPmaxPREQretries; 786 u32 path_refresh_time; 787 u16 min_discovery_timeout; 788 u32 dot11MeshHWMPactivePathTimeout; 789 u16 dot11MeshHWMPpreqMinInterval; 790 u16 dot11MeshHWMPperrMinInterval; 791 u16 dot11MeshHWMPnetDiameterTraversalTime; 792 u8 dot11MeshHWMPRootMode; 793 u16 dot11MeshHWMPRannInterval; 794 /* This is missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol 795 * set to true only means that the station will announce others it's a 796 * mesh gate, but not necessarily using the gate announcement protocol. 797 * Still keeping the same nomenclature to be in sync with the spec. */ 798 bool dot11MeshGateAnnouncementProtocol; 799 }; 800 801 /** 802 * struct mesh_setup - 802.11s mesh setup configuration 803 * @mesh_id: the mesh ID 804 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 805 * @path_sel_proto: which path selection protocol to use 806 * @path_metric: which metric to use 807 * @ie: vendor information elements (optional) 808 * @ie_len: length of vendor information elements 809 * @is_authenticated: this mesh requires authentication 810 * @is_secure: this mesh uses security 811 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 812 * 813 * These parameters are fixed when the mesh is created. 814 */ 815 struct mesh_setup { 816 const u8 *mesh_id; 817 u8 mesh_id_len; 818 u8 path_sel_proto; 819 u8 path_metric; 820 const u8 *ie; 821 u8 ie_len; 822 bool is_authenticated; 823 bool is_secure; 824 int mcast_rate[IEEE80211_NUM_BANDS]; 825 }; 826 827 /** 828 * struct ieee80211_txq_params - TX queue parameters 829 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 830 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 831 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 832 * 1..32767] 833 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 834 * 1..32767] 835 * @aifs: Arbitration interframe space [0..255] 836 */ 837 struct ieee80211_txq_params { 838 enum nl80211_txq_q queue; 839 u16 txop; 840 u16 cwmin; 841 u16 cwmax; 842 u8 aifs; 843 }; 844 845 /* from net/wireless.h */ 846 struct wiphy; 847 848 /** 849 * DOC: Scanning and BSS list handling 850 * 851 * The scanning process itself is fairly simple, but cfg80211 offers quite 852 * a bit of helper functionality. To start a scan, the scan operation will 853 * be invoked with a scan definition. This scan definition contains the 854 * channels to scan, and the SSIDs to send probe requests for (including the 855 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 856 * probe. Additionally, a scan request may contain extra information elements 857 * that should be added to the probe request. The IEs are guaranteed to be 858 * well-formed, and will not exceed the maximum length the driver advertised 859 * in the wiphy structure. 860 * 861 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 862 * it is responsible for maintaining the BSS list; the driver should not 863 * maintain a list itself. For this notification, various functions exist. 864 * 865 * Since drivers do not maintain a BSS list, there are also a number of 866 * functions to search for a BSS and obtain information about it from the 867 * BSS structure cfg80211 maintains. The BSS list is also made available 868 * to userspace. 869 */ 870 871 /** 872 * struct cfg80211_ssid - SSID description 873 * @ssid: the SSID 874 * @ssid_len: length of the ssid 875 */ 876 struct cfg80211_ssid { 877 u8 ssid[IEEE80211_MAX_SSID_LEN]; 878 u8 ssid_len; 879 }; 880 881 /** 882 * struct cfg80211_scan_request - scan request description 883 * 884 * @ssids: SSIDs to scan for (active scan only) 885 * @n_ssids: number of SSIDs 886 * @channels: channels to scan on. 887 * @n_channels: total number of channels to scan 888 * @ie: optional information element(s) to add into Probe Request or %NULL 889 * @ie_len: length of ie in octets 890 * @rates: bitmap of rates to advertise for each band 891 * @wiphy: the wiphy this was for 892 * @dev: the interface 893 * @aborted: (internal) scan request was notified as aborted 894 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 895 */ 896 struct cfg80211_scan_request { 897 struct cfg80211_ssid *ssids; 898 int n_ssids; 899 u32 n_channels; 900 const u8 *ie; 901 size_t ie_len; 902 903 u32 rates[IEEE80211_NUM_BANDS]; 904 905 /* internal */ 906 struct wiphy *wiphy; 907 struct net_device *dev; 908 bool aborted; 909 bool no_cck; 910 911 /* keep last */ 912 struct ieee80211_channel *channels[0]; 913 }; 914 915 /** 916 * struct cfg80211_match_set - sets of attributes to match 917 * 918 * @ssid: SSID to be matched 919 */ 920 struct cfg80211_match_set { 921 struct cfg80211_ssid ssid; 922 }; 923 924 /** 925 * struct cfg80211_sched_scan_request - scheduled scan request description 926 * 927 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 928 * @n_ssids: number of SSIDs 929 * @n_channels: total number of channels to scan 930 * @interval: interval between each scheduled scan cycle 931 * @ie: optional information element(s) to add into Probe Request or %NULL 932 * @ie_len: length of ie in octets 933 * @match_sets: sets of parameters to be matched for a scan result 934 * entry to be considered valid and to be passed to the host 935 * (others are filtered out). 936 * If ommited, all results are passed. 937 * @n_match_sets: number of match sets 938 * @wiphy: the wiphy this was for 939 * @dev: the interface 940 * @channels: channels to scan 941 */ 942 struct cfg80211_sched_scan_request { 943 struct cfg80211_ssid *ssids; 944 int n_ssids; 945 u32 n_channels; 946 u32 interval; 947 const u8 *ie; 948 size_t ie_len; 949 struct cfg80211_match_set *match_sets; 950 int n_match_sets; 951 952 /* internal */ 953 struct wiphy *wiphy; 954 struct net_device *dev; 955 956 /* keep last */ 957 struct ieee80211_channel *channels[0]; 958 }; 959 960 /** 961 * enum cfg80211_signal_type - signal type 962 * 963 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 964 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 965 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 966 */ 967 enum cfg80211_signal_type { 968 CFG80211_SIGNAL_TYPE_NONE, 969 CFG80211_SIGNAL_TYPE_MBM, 970 CFG80211_SIGNAL_TYPE_UNSPEC, 971 }; 972 973 /** 974 * struct cfg80211_bss - BSS description 975 * 976 * This structure describes a BSS (which may also be a mesh network) 977 * for use in scan results and similar. 978 * 979 * @channel: channel this BSS is on 980 * @bssid: BSSID of the BSS 981 * @tsf: timestamp of last received update 982 * @beacon_interval: the beacon interval as from the frame 983 * @capability: the capability field in host byte order 984 * @information_elements: the information elements (Note that there 985 * is no guarantee that these are well-formed!); this is a pointer to 986 * either the beacon_ies or proberesp_ies depending on whether Probe 987 * Response frame has been received 988 * @len_information_elements: total length of the information elements 989 * @beacon_ies: the information elements from the last Beacon frame 990 * @len_beacon_ies: total length of the beacon_ies 991 * @proberesp_ies: the information elements from the last Probe Response frame 992 * @len_proberesp_ies: total length of the proberesp_ies 993 * @signal: signal strength value (type depends on the wiphy's signal_type) 994 * @free_priv: function pointer to free private data 995 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 996 */ 997 struct cfg80211_bss { 998 struct ieee80211_channel *channel; 999 1000 u8 bssid[ETH_ALEN]; 1001 u64 tsf; 1002 u16 beacon_interval; 1003 u16 capability; 1004 u8 *information_elements; 1005 size_t len_information_elements; 1006 u8 *beacon_ies; 1007 size_t len_beacon_ies; 1008 u8 *proberesp_ies; 1009 size_t len_proberesp_ies; 1010 1011 s32 signal; 1012 1013 void (*free_priv)(struct cfg80211_bss *bss); 1014 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 1015 }; 1016 1017 /** 1018 * ieee80211_bss_get_ie - find IE with given ID 1019 * @bss: the bss to search 1020 * @ie: the IE ID 1021 * Returns %NULL if not found. 1022 */ 1023 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1024 1025 1026 /** 1027 * struct cfg80211_auth_request - Authentication request data 1028 * 1029 * This structure provides information needed to complete IEEE 802.11 1030 * authentication. 1031 * 1032 * @bss: The BSS to authenticate with. 1033 * @auth_type: Authentication type (algorithm) 1034 * @ie: Extra IEs to add to Authentication frame or %NULL 1035 * @ie_len: Length of ie buffer in octets 1036 * @key_len: length of WEP key for shared key authentication 1037 * @key_idx: index of WEP key for shared key authentication 1038 * @key: WEP key for shared key authentication 1039 * @local_state_change: This is a request for a local state only, i.e., no 1040 * Authentication frame is to be transmitted and authentication state is 1041 * to be changed without having to wait for a response from the peer STA 1042 * (AP). 1043 */ 1044 struct cfg80211_auth_request { 1045 struct cfg80211_bss *bss; 1046 const u8 *ie; 1047 size_t ie_len; 1048 enum nl80211_auth_type auth_type; 1049 const u8 *key; 1050 u8 key_len, key_idx; 1051 bool local_state_change; 1052 }; 1053 1054 /** 1055 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1056 * 1057 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1058 */ 1059 enum cfg80211_assoc_req_flags { 1060 ASSOC_REQ_DISABLE_HT = BIT(0), 1061 }; 1062 1063 /** 1064 * struct cfg80211_assoc_request - (Re)Association request data 1065 * 1066 * This structure provides information needed to complete IEEE 802.11 1067 * (re)association. 1068 * @bss: The BSS to associate with. 1069 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1070 * @ie_len: Length of ie buffer in octets 1071 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1072 * @crypto: crypto settings 1073 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 1074 * @flags: See &enum cfg80211_assoc_req_flags 1075 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1076 * will be used in ht_capa. Un-supported values will be ignored. 1077 * @ht_capa_mask: The bits of ht_capa which are to be used. 1078 */ 1079 struct cfg80211_assoc_request { 1080 struct cfg80211_bss *bss; 1081 const u8 *ie, *prev_bssid; 1082 size_t ie_len; 1083 struct cfg80211_crypto_settings crypto; 1084 bool use_mfp; 1085 u32 flags; 1086 struct ieee80211_ht_cap ht_capa; 1087 struct ieee80211_ht_cap ht_capa_mask; 1088 }; 1089 1090 /** 1091 * struct cfg80211_deauth_request - Deauthentication request data 1092 * 1093 * This structure provides information needed to complete IEEE 802.11 1094 * deauthentication. 1095 * 1096 * @bss: the BSS to deauthenticate from 1097 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1098 * @ie_len: Length of ie buffer in octets 1099 * @reason_code: The reason code for the deauthentication 1100 * @local_state_change: This is a request for a local state only, i.e., no 1101 * Deauthentication frame is to be transmitted. 1102 */ 1103 struct cfg80211_deauth_request { 1104 struct cfg80211_bss *bss; 1105 const u8 *ie; 1106 size_t ie_len; 1107 u16 reason_code; 1108 bool local_state_change; 1109 }; 1110 1111 /** 1112 * struct cfg80211_disassoc_request - Disassociation request data 1113 * 1114 * This structure provides information needed to complete IEEE 802.11 1115 * disassocation. 1116 * 1117 * @bss: the BSS to disassociate from 1118 * @ie: Extra IEs to add to Disassociation frame or %NULL 1119 * @ie_len: Length of ie buffer in octets 1120 * @reason_code: The reason code for the disassociation 1121 * @local_state_change: This is a request for a local state only, i.e., no 1122 * Disassociation frame is to be transmitted. 1123 */ 1124 struct cfg80211_disassoc_request { 1125 struct cfg80211_bss *bss; 1126 const u8 *ie; 1127 size_t ie_len; 1128 u16 reason_code; 1129 bool local_state_change; 1130 }; 1131 1132 /** 1133 * struct cfg80211_ibss_params - IBSS parameters 1134 * 1135 * This structure defines the IBSS parameters for the join_ibss() 1136 * method. 1137 * 1138 * @ssid: The SSID, will always be non-null. 1139 * @ssid_len: The length of the SSID, will always be non-zero. 1140 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1141 * search for IBSSs with a different BSSID. 1142 * @channel: The channel to use if no IBSS can be found to join. 1143 * @channel_type: channel type (HT mode) 1144 * @channel_fixed: The channel should be fixed -- do not search for 1145 * IBSSs to join on other channels. 1146 * @ie: information element(s) to include in the beacon 1147 * @ie_len: length of that 1148 * @beacon_interval: beacon interval to use 1149 * @privacy: this is a protected network, keys will be configured 1150 * after joining 1151 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1152 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1153 */ 1154 struct cfg80211_ibss_params { 1155 u8 *ssid; 1156 u8 *bssid; 1157 struct ieee80211_channel *channel; 1158 enum nl80211_channel_type channel_type; 1159 u8 *ie; 1160 u8 ssid_len, ie_len; 1161 u16 beacon_interval; 1162 u32 basic_rates; 1163 bool channel_fixed; 1164 bool privacy; 1165 int mcast_rate[IEEE80211_NUM_BANDS]; 1166 }; 1167 1168 /** 1169 * struct cfg80211_connect_params - Connection parameters 1170 * 1171 * This structure provides information needed to complete IEEE 802.11 1172 * authentication and association. 1173 * 1174 * @channel: The channel to use or %NULL if not specified (auto-select based 1175 * on scan results) 1176 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1177 * results) 1178 * @ssid: SSID 1179 * @ssid_len: Length of ssid in octets 1180 * @auth_type: Authentication type (algorithm) 1181 * @ie: IEs for association request 1182 * @ie_len: Length of assoc_ie in octets 1183 * @privacy: indicates whether privacy-enabled APs should be used 1184 * @crypto: crypto settings 1185 * @key_len: length of WEP key for shared key authentication 1186 * @key_idx: index of WEP key for shared key authentication 1187 * @key: WEP key for shared key authentication 1188 * @flags: See &enum cfg80211_assoc_req_flags 1189 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1190 * will be used in ht_capa. Un-supported values will be ignored. 1191 * @ht_capa_mask: The bits of ht_capa which are to be used. 1192 */ 1193 struct cfg80211_connect_params { 1194 struct ieee80211_channel *channel; 1195 u8 *bssid; 1196 u8 *ssid; 1197 size_t ssid_len; 1198 enum nl80211_auth_type auth_type; 1199 u8 *ie; 1200 size_t ie_len; 1201 bool privacy; 1202 struct cfg80211_crypto_settings crypto; 1203 const u8 *key; 1204 u8 key_len, key_idx; 1205 u32 flags; 1206 struct ieee80211_ht_cap ht_capa; 1207 struct ieee80211_ht_cap ht_capa_mask; 1208 }; 1209 1210 /** 1211 * enum wiphy_params_flags - set_wiphy_params bitfield values 1212 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1213 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1214 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1215 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1216 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1217 */ 1218 enum wiphy_params_flags { 1219 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1220 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1221 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1222 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1223 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1224 }; 1225 1226 /* 1227 * cfg80211_bitrate_mask - masks for bitrate control 1228 */ 1229 struct cfg80211_bitrate_mask { 1230 struct { 1231 u32 legacy; 1232 /* TODO: add support for masking MCS rates; e.g.: */ 1233 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 1234 } control[IEEE80211_NUM_BANDS]; 1235 }; 1236 /** 1237 * struct cfg80211_pmksa - PMK Security Association 1238 * 1239 * This structure is passed to the set/del_pmksa() method for PMKSA 1240 * caching. 1241 * 1242 * @bssid: The AP's BSSID. 1243 * @pmkid: The PMK material itself. 1244 */ 1245 struct cfg80211_pmksa { 1246 u8 *bssid; 1247 u8 *pmkid; 1248 }; 1249 1250 /** 1251 * struct cfg80211_wowlan_trig_pkt_pattern - packet pattern 1252 * @mask: bitmask where to match pattern and where to ignore bytes, 1253 * one bit per byte, in same format as nl80211 1254 * @pattern: bytes to match where bitmask is 1 1255 * @pattern_len: length of pattern (in bytes) 1256 * 1257 * Internal note: @mask and @pattern are allocated in one chunk of 1258 * memory, free @mask only! 1259 */ 1260 struct cfg80211_wowlan_trig_pkt_pattern { 1261 u8 *mask, *pattern; 1262 int pattern_len; 1263 }; 1264 1265 /** 1266 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1267 * 1268 * This structure defines the enabled WoWLAN triggers for the device. 1269 * @any: wake up on any activity -- special trigger if device continues 1270 * operating as normal during suspend 1271 * @disconnect: wake up if getting disconnected 1272 * @magic_pkt: wake up on receiving magic packet 1273 * @patterns: wake up on receiving packet matching a pattern 1274 * @n_patterns: number of patterns 1275 * @gtk_rekey_failure: wake up on GTK rekey failure 1276 * @eap_identity_req: wake up on EAP identity request packet 1277 * @four_way_handshake: wake up on 4-way handshake 1278 * @rfkill_release: wake up when rfkill is released 1279 */ 1280 struct cfg80211_wowlan { 1281 bool any, disconnect, magic_pkt, gtk_rekey_failure, 1282 eap_identity_req, four_way_handshake, 1283 rfkill_release; 1284 struct cfg80211_wowlan_trig_pkt_pattern *patterns; 1285 int n_patterns; 1286 }; 1287 1288 /** 1289 * struct cfg80211_gtk_rekey_data - rekey data 1290 * @kek: key encryption key 1291 * @kck: key confirmation key 1292 * @replay_ctr: replay counter 1293 */ 1294 struct cfg80211_gtk_rekey_data { 1295 u8 kek[NL80211_KEK_LEN]; 1296 u8 kck[NL80211_KCK_LEN]; 1297 u8 replay_ctr[NL80211_REPLAY_CTR_LEN]; 1298 }; 1299 1300 /** 1301 * struct cfg80211_ops - backend description for wireless configuration 1302 * 1303 * This struct is registered by fullmac card drivers and/or wireless stacks 1304 * in order to handle configuration requests on their interfaces. 1305 * 1306 * All callbacks except where otherwise noted should return 0 1307 * on success or a negative error code. 1308 * 1309 * All operations are currently invoked under rtnl for consistency with the 1310 * wireless extensions but this is subject to reevaluation as soon as this 1311 * code is used more widely and we have a first user without wext. 1312 * 1313 * @suspend: wiphy device needs to be suspended. The variable @wow will 1314 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 1315 * configured for the device. 1316 * @resume: wiphy device needs to be resumed 1317 * 1318 * @add_virtual_intf: create a new virtual interface with the given name, 1319 * must set the struct wireless_dev's iftype. Beware: You must create 1320 * the new netdev in the wiphy's network namespace! Returns the netdev, 1321 * or an ERR_PTR. 1322 * 1323 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1324 * 1325 * @change_virtual_intf: change type/configuration of virtual interface, 1326 * keep the struct wireless_dev's iftype updated. 1327 * 1328 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1329 * when adding a group key. 1330 * 1331 * @get_key: get information about the key with the given parameters. 1332 * @mac_addr will be %NULL when requesting information for a group 1333 * key. All pointers given to the @callback function need not be valid 1334 * after it returns. This function should return an error if it is 1335 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1336 * 1337 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1338 * and @key_index, return -ENOENT if the key doesn't exist. 1339 * 1340 * @set_default_key: set the default key on an interface 1341 * 1342 * @set_default_mgmt_key: set the default management frame key on an interface 1343 * 1344 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 1345 * 1346 * @add_beacon: Add a beacon with given parameters, @head, @interval 1347 * and @dtim_period will be valid, @tail is optional. 1348 * @set_beacon: Change the beacon parameters for an access point mode 1349 * interface. This should reject the call when no beacon has been 1350 * configured. 1351 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1352 * 1353 * @add_station: Add a new station. 1354 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1355 * @change_station: Modify a given station. Note that flags changes are not much 1356 * validated in cfg80211, in particular the auth/assoc/authorized flags 1357 * might come to the driver in invalid combinations -- make sure to check 1358 * them, also against the existing state! Also, supported_rates changes are 1359 * not checked in station mode -- drivers need to reject (or ignore) them 1360 * for anything but TDLS peers. 1361 * @get_station: get station information for the station identified by @mac 1362 * @dump_station: dump station callback -- resume dump at index @idx 1363 * 1364 * @add_mpath: add a fixed mesh path 1365 * @del_mpath: delete a given mesh path 1366 * @change_mpath: change a given mesh path 1367 * @get_mpath: get a mesh path for the given parameters 1368 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1369 * @join_mesh: join the mesh network with the specified parameters 1370 * @leave_mesh: leave the current mesh network 1371 * 1372 * @get_mesh_config: Get the current mesh configuration 1373 * 1374 * @update_mesh_config: Update mesh parameters on a running mesh. 1375 * The mask is a bitfield which tells us which parameters to 1376 * set, and which to leave alone. 1377 * 1378 * @change_bss: Modify parameters for a given BSS. 1379 * 1380 * @set_txq_params: Set TX queue parameters 1381 * 1382 * @set_channel: Set channel for a given wireless interface. Some devices 1383 * may support multi-channel operation (by channel hopping) so cfg80211 1384 * doesn't verify much. Note, however, that the passed netdev may be 1385 * %NULL as well if the user requested changing the channel for the 1386 * device itself, or for a monitor interface. 1387 * @get_channel: Get the current operating channel, should return %NULL if 1388 * there's no single defined operating channel if for example the 1389 * device implements channel hopping for multi-channel virtual interfaces. 1390 * 1391 * @scan: Request to do a scan. If returning zero, the scan request is given 1392 * the driver, and will be valid until passed to cfg80211_scan_done(). 1393 * For scan results, call cfg80211_inform_bss(); you can call this outside 1394 * the scan/scan_done bracket too. 1395 * 1396 * @auth: Request to authenticate with the specified peer 1397 * @assoc: Request to (re)associate with the specified peer 1398 * @deauth: Request to deauthenticate from the specified peer 1399 * @disassoc: Request to disassociate from the specified peer 1400 * 1401 * @connect: Connect to the ESS with the specified parameters. When connected, 1402 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1403 * If the connection fails for some reason, call cfg80211_connect_result() 1404 * with the status from the AP. 1405 * @disconnect: Disconnect from the BSS/ESS. 1406 * 1407 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1408 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1409 * to a merge. 1410 * @leave_ibss: Leave the IBSS. 1411 * 1412 * @set_wiphy_params: Notify that wiphy parameters have changed; 1413 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1414 * have changed. The actual parameter values are available in 1415 * struct wiphy. If returning an error, no value should be changed. 1416 * 1417 * @set_tx_power: set the transmit power according to the parameters, 1418 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). 1419 * @get_tx_power: store the current TX power into the dbm variable; 1420 * return 0 if successful 1421 * 1422 * @set_wds_peer: set the WDS peer for a WDS interface 1423 * 1424 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1425 * functions to adjust rfkill hw state 1426 * 1427 * @dump_survey: get site survey information. 1428 * 1429 * @remain_on_channel: Request the driver to remain awake on the specified 1430 * channel for the specified duration to complete an off-channel 1431 * operation (e.g., public action frame exchange). When the driver is 1432 * ready on the requested channel, it must indicate this with an event 1433 * notification by calling cfg80211_ready_on_channel(). 1434 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1435 * This allows the operation to be terminated prior to timeout based on 1436 * the duration value. 1437 * @mgmt_tx: Transmit a management frame. 1438 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1439 * frame on another channel 1440 * 1441 * @testmode_cmd: run a test mode command 1442 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 1443 * used by the function, but 0 and 1 must not be touched. Additionally, 1444 * return error codes other than -ENOBUFS and -ENOENT will terminate the 1445 * dump and return to userspace with an error, so be careful. If any data 1446 * was passed in from userspace then the data/len arguments will be present 1447 * and point to the data contained in %NL80211_ATTR_TESTDATA. 1448 * 1449 * @set_bitrate_mask: set the bitrate mask configuration 1450 * 1451 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1452 * devices running firmwares capable of generating the (re) association 1453 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1454 * @del_pmksa: Delete a cached PMKID. 1455 * @flush_pmksa: Flush all cached PMKIDs. 1456 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1457 * allows the driver to adjust the dynamic ps timeout value. 1458 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1459 * @sched_scan_start: Tell the driver to start a scheduled scan. 1460 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled 1461 * scan. The driver_initiated flag specifies whether the driver 1462 * itself has informed that the scan has stopped. 1463 * 1464 * @mgmt_frame_register: Notify driver that a management frame type was 1465 * registered. Note that this callback may not sleep, and cannot run 1466 * concurrently with itself. 1467 * 1468 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1469 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1470 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1471 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1472 * 1473 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1474 * 1475 * @set_ringparam: Set tx and rx ring sizes. 1476 * 1477 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1478 * 1479 * @tdls_mgmt: Transmit a TDLS management frame. 1480 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 1481 * 1482 * @probe_client: probe an associated client, must return a cookie that it 1483 * later passes to cfg80211_probe_status(). 1484 * 1485 * @set_noack_map: Set the NoAck Map for the TIDs. 1486 */ 1487 struct cfg80211_ops { 1488 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 1489 int (*resume)(struct wiphy *wiphy); 1490 1491 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1492 char *name, 1493 enum nl80211_iftype type, 1494 u32 *flags, 1495 struct vif_params *params); 1496 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1497 int (*change_virtual_intf)(struct wiphy *wiphy, 1498 struct net_device *dev, 1499 enum nl80211_iftype type, u32 *flags, 1500 struct vif_params *params); 1501 1502 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1503 u8 key_index, bool pairwise, const u8 *mac_addr, 1504 struct key_params *params); 1505 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1506 u8 key_index, bool pairwise, const u8 *mac_addr, 1507 void *cookie, 1508 void (*callback)(void *cookie, struct key_params*)); 1509 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1510 u8 key_index, bool pairwise, const u8 *mac_addr); 1511 int (*set_default_key)(struct wiphy *wiphy, 1512 struct net_device *netdev, 1513 u8 key_index, bool unicast, bool multicast); 1514 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1515 struct net_device *netdev, 1516 u8 key_index); 1517 1518 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1519 struct beacon_parameters *info); 1520 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1521 struct beacon_parameters *info); 1522 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1523 1524 1525 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1526 u8 *mac, struct station_parameters *params); 1527 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1528 u8 *mac); 1529 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1530 u8 *mac, struct station_parameters *params); 1531 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1532 u8 *mac, struct station_info *sinfo); 1533 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1534 int idx, u8 *mac, struct station_info *sinfo); 1535 1536 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1537 u8 *dst, u8 *next_hop); 1538 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1539 u8 *dst); 1540 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1541 u8 *dst, u8 *next_hop); 1542 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1543 u8 *dst, u8 *next_hop, 1544 struct mpath_info *pinfo); 1545 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1546 int idx, u8 *dst, u8 *next_hop, 1547 struct mpath_info *pinfo); 1548 int (*get_mesh_config)(struct wiphy *wiphy, 1549 struct net_device *dev, 1550 struct mesh_config *conf); 1551 int (*update_mesh_config)(struct wiphy *wiphy, 1552 struct net_device *dev, u32 mask, 1553 const struct mesh_config *nconf); 1554 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1555 const struct mesh_config *conf, 1556 const struct mesh_setup *setup); 1557 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1558 1559 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1560 struct bss_parameters *params); 1561 1562 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 1563 struct ieee80211_txq_params *params); 1564 1565 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1566 struct ieee80211_channel *chan, 1567 enum nl80211_channel_type channel_type); 1568 1569 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1570 struct cfg80211_scan_request *request); 1571 1572 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1573 struct cfg80211_auth_request *req); 1574 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1575 struct cfg80211_assoc_request *req); 1576 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1577 struct cfg80211_deauth_request *req, 1578 void *cookie); 1579 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1580 struct cfg80211_disassoc_request *req, 1581 void *cookie); 1582 1583 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1584 struct cfg80211_connect_params *sme); 1585 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1586 u16 reason_code); 1587 1588 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1589 struct cfg80211_ibss_params *params); 1590 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1591 1592 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1593 1594 int (*set_tx_power)(struct wiphy *wiphy, 1595 enum nl80211_tx_power_setting type, int mbm); 1596 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1597 1598 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1599 const u8 *addr); 1600 1601 void (*rfkill_poll)(struct wiphy *wiphy); 1602 1603 #ifdef CONFIG_NL80211_TESTMODE 1604 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1605 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 1606 struct netlink_callback *cb, 1607 void *data, int len); 1608 #endif 1609 1610 int (*set_bitrate_mask)(struct wiphy *wiphy, 1611 struct net_device *dev, 1612 const u8 *peer, 1613 const struct cfg80211_bitrate_mask *mask); 1614 1615 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1616 int idx, struct survey_info *info); 1617 1618 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1619 struct cfg80211_pmksa *pmksa); 1620 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1621 struct cfg80211_pmksa *pmksa); 1622 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1623 1624 int (*remain_on_channel)(struct wiphy *wiphy, 1625 struct net_device *dev, 1626 struct ieee80211_channel *chan, 1627 enum nl80211_channel_type channel_type, 1628 unsigned int duration, 1629 u64 *cookie); 1630 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1631 struct net_device *dev, 1632 u64 cookie); 1633 1634 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1635 struct ieee80211_channel *chan, bool offchan, 1636 enum nl80211_channel_type channel_type, 1637 bool channel_type_valid, unsigned int wait, 1638 const u8 *buf, size_t len, bool no_cck, 1639 bool dont_wait_for_ack, u64 *cookie); 1640 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1641 struct net_device *dev, 1642 u64 cookie); 1643 1644 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1645 bool enabled, int timeout); 1646 1647 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1648 struct net_device *dev, 1649 s32 rssi_thold, u32 rssi_hyst); 1650 1651 void (*mgmt_frame_register)(struct wiphy *wiphy, 1652 struct net_device *dev, 1653 u16 frame_type, bool reg); 1654 1655 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1656 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1657 1658 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 1659 void (*get_ringparam)(struct wiphy *wiphy, 1660 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1661 1662 int (*sched_scan_start)(struct wiphy *wiphy, 1663 struct net_device *dev, 1664 struct cfg80211_sched_scan_request *request); 1665 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 1666 1667 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 1668 struct cfg80211_gtk_rekey_data *data); 1669 1670 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1671 u8 *peer, u8 action_code, u8 dialog_token, 1672 u16 status_code, const u8 *buf, size_t len); 1673 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 1674 u8 *peer, enum nl80211_tdls_operation oper); 1675 1676 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 1677 const u8 *peer, u64 *cookie); 1678 1679 int (*set_noack_map)(struct wiphy *wiphy, 1680 struct net_device *dev, 1681 u16 noack_map); 1682 1683 struct ieee80211_channel *(*get_channel)(struct wiphy *wiphy); 1684 }; 1685 1686 /* 1687 * wireless hardware and networking interfaces structures 1688 * and registration/helper functions 1689 */ 1690 1691 /** 1692 * enum wiphy_flags - wiphy capability flags 1693 * 1694 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1695 * has its own custom regulatory domain and cannot identify the 1696 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1697 * we will disregard the first regulatory hint (when the 1698 * initiator is %REGDOM_SET_BY_CORE). 1699 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1700 * ignore regulatory domain settings until it gets its own regulatory 1701 * domain via its regulatory_hint() unless the regulatory hint is 1702 * from a country IE. After its gets its own regulatory domain it will 1703 * only allow further regulatory domain settings to further enhance 1704 * compliance. For example if channel 13 and 14 are disabled by this 1705 * regulatory domain no user regulatory domain can enable these channels 1706 * at a later time. This can be used for devices which do not have 1707 * calibration information guaranteed for frequencies or settings 1708 * outside of its regulatory domain. If used in combination with 1709 * WIPHY_FLAG_CUSTOM_REGULATORY the inspected country IE power settings 1710 * will be followed. 1711 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1712 * that passive scan flags and beaconing flags may not be lifted by 1713 * cfg80211 due to regulatory beacon hints. For more information on beacon 1714 * hints read the documenation for regulatory_hint_found_beacon() 1715 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1716 * wiphy at all 1717 * @WIPHY_FLAG_ENFORCE_COMBINATIONS: Set this flag to enforce interface 1718 * combinations for this device. This flag is used for backward 1719 * compatibility only until all drivers advertise combinations and 1720 * they will always be enforced. 1721 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1722 * by default -- this flag will be set depending on the kernel's default 1723 * on wiphy_new(), but can be changed by the driver if it has a good 1724 * reason to override the default 1725 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1726 * on a VLAN interface) 1727 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1728 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1729 * control port protocol ethertype. The device also honours the 1730 * control_port_no_encrypt flag. 1731 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1732 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 1733 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 1734 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 1735 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 1736 * firmware. 1737 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 1738 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 1739 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 1740 * link setup/discovery operations internally. Setup, discovery and 1741 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 1742 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 1743 * used for asking the driver/firmware to perform a TDLS operation. 1744 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 1745 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 1746 * when there are virtual interfaces in AP mode by calling 1747 * cfg80211_report_obss_beacon(). 1748 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 1749 * responds to probe-requests in hardware. 1750 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 1751 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 1752 */ 1753 enum wiphy_flags { 1754 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1755 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1756 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1757 WIPHY_FLAG_NETNS_OK = BIT(3), 1758 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1759 WIPHY_FLAG_4ADDR_AP = BIT(5), 1760 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1761 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1762 WIPHY_FLAG_IBSS_RSN = BIT(8), 1763 WIPHY_FLAG_MESH_AUTH = BIT(10), 1764 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 1765 WIPHY_FLAG_ENFORCE_COMBINATIONS = BIT(12), 1766 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 1767 WIPHY_FLAG_AP_UAPSD = BIT(14), 1768 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 1769 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 1770 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 1771 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 1772 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 1773 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 1774 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 1775 }; 1776 1777 /** 1778 * struct ieee80211_iface_limit - limit on certain interface types 1779 * @max: maximum number of interfaces of these types 1780 * @types: interface types (bits) 1781 */ 1782 struct ieee80211_iface_limit { 1783 u16 max; 1784 u16 types; 1785 }; 1786 1787 /** 1788 * struct ieee80211_iface_combination - possible interface combination 1789 * @limits: limits for the given interface types 1790 * @n_limits: number of limitations 1791 * @num_different_channels: can use up to this many different channels 1792 * @max_interfaces: maximum number of interfaces in total allowed in this 1793 * group 1794 * @beacon_int_infra_match: In this combination, the beacon intervals 1795 * between infrastructure and AP types must match. This is required 1796 * only in special cases. 1797 * 1798 * These examples can be expressed as follows: 1799 * 1800 * Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 1801 * 1802 * struct ieee80211_iface_limit limits1[] = { 1803 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1804 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 1805 * }; 1806 * struct ieee80211_iface_combination combination1 = { 1807 * .limits = limits1, 1808 * .n_limits = ARRAY_SIZE(limits1), 1809 * .max_interfaces = 2, 1810 * .beacon_int_infra_match = true, 1811 * }; 1812 * 1813 * 1814 * Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 1815 * 1816 * struct ieee80211_iface_limit limits2[] = { 1817 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 1818 * BIT(NL80211_IFTYPE_P2P_GO), }, 1819 * }; 1820 * struct ieee80211_iface_combination combination2 = { 1821 * .limits = limits2, 1822 * .n_limits = ARRAY_SIZE(limits2), 1823 * .max_interfaces = 8, 1824 * .num_different_channels = 1, 1825 * }; 1826 * 1827 * 1828 * Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 1829 * This allows for an infrastructure connection and three P2P connections. 1830 * 1831 * struct ieee80211_iface_limit limits3[] = { 1832 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1833 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 1834 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 1835 * }; 1836 * struct ieee80211_iface_combination combination3 = { 1837 * .limits = limits3, 1838 * .n_limits = ARRAY_SIZE(limits3), 1839 * .max_interfaces = 4, 1840 * .num_different_channels = 2, 1841 * }; 1842 */ 1843 struct ieee80211_iface_combination { 1844 const struct ieee80211_iface_limit *limits; 1845 u32 num_different_channels; 1846 u16 max_interfaces; 1847 u8 n_limits; 1848 bool beacon_int_infra_match; 1849 }; 1850 1851 struct mac_address { 1852 u8 addr[ETH_ALEN]; 1853 }; 1854 1855 struct ieee80211_txrx_stypes { 1856 u16 tx, rx; 1857 }; 1858 1859 /** 1860 * enum wiphy_wowlan_support_flags - WoWLAN support flags 1861 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 1862 * trigger that keeps the device operating as-is and 1863 * wakes up the host on any activity, for example a 1864 * received packet that passed filtering; note that the 1865 * packet should be preserved in that case 1866 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 1867 * (see nl80211.h) 1868 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 1869 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 1870 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 1871 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 1872 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 1873 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 1874 */ 1875 enum wiphy_wowlan_support_flags { 1876 WIPHY_WOWLAN_ANY = BIT(0), 1877 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 1878 WIPHY_WOWLAN_DISCONNECT = BIT(2), 1879 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 1880 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 1881 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 1882 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 1883 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 1884 }; 1885 1886 /** 1887 * struct wiphy_wowlan_support - WoWLAN support data 1888 * @flags: see &enum wiphy_wowlan_support_flags 1889 * @n_patterns: number of supported wakeup patterns 1890 * (see nl80211.h for the pattern definition) 1891 * @pattern_max_len: maximum length of each pattern 1892 * @pattern_min_len: minimum length of each pattern 1893 */ 1894 struct wiphy_wowlan_support { 1895 u32 flags; 1896 int n_patterns; 1897 int pattern_max_len; 1898 int pattern_min_len; 1899 }; 1900 1901 /** 1902 * struct wiphy - wireless hardware description 1903 * @reg_notifier: the driver's regulatory notification callback, 1904 * note that if your driver uses wiphy_apply_custom_regulatory() 1905 * the reg_notifier's request can be passed as NULL 1906 * @regd: the driver's regulatory domain, if one was requested via 1907 * the regulatory_hint() API. This can be used by the driver 1908 * on the reg_notifier() if it chooses to ignore future 1909 * regulatory domain changes caused by other drivers. 1910 * @signal_type: signal type reported in &struct cfg80211_bss. 1911 * @cipher_suites: supported cipher suites 1912 * @n_cipher_suites: number of supported cipher suites 1913 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1914 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1915 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1916 * -1 = fragmentation disabled, only odd values >= 256 used 1917 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1918 * @_net: the network namespace this wiphy currently lives in 1919 * @perm_addr: permanent MAC address of this device 1920 * @addr_mask: If the device supports multiple MAC addresses by masking, 1921 * set this to a mask with variable bits set to 1, e.g. if the last 1922 * four bits are variable then set it to 00:...:00:0f. The actual 1923 * variable bits shall be determined by the interfaces added, with 1924 * interfaces not matching the mask being rejected to be brought up. 1925 * @n_addresses: number of addresses in @addresses. 1926 * @addresses: If the device has more than one address, set this pointer 1927 * to a list of addresses (6 bytes each). The first one will be used 1928 * by default for perm_addr. In this case, the mask should be set to 1929 * all-zeroes. In this case it is assumed that the device can handle 1930 * the same number of arbitrary MAC addresses. 1931 * @registered: protects ->resume and ->suspend sysfs callbacks against 1932 * unregister hardware 1933 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1934 * automatically on wiphy renames 1935 * @dev: (virtual) struct device for this wiphy 1936 * @registered: helps synchronize suspend/resume with wiphy unregister 1937 * @wext: wireless extension handlers 1938 * @priv: driver private data (sized according to wiphy_new() parameter) 1939 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1940 * must be set by driver 1941 * @iface_combinations: Valid interface combinations array, should not 1942 * list single interface types. 1943 * @n_iface_combinations: number of entries in @iface_combinations array. 1944 * @software_iftypes: bitmask of software interface types, these are not 1945 * subject to any restrictions since they are purely managed in SW. 1946 * @flags: wiphy flags, see &enum wiphy_flags 1947 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 1948 * @bss_priv_size: each BSS struct has private data allocated with it, 1949 * this variable determines its size 1950 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1951 * any given scan 1952 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 1953 * for in any given scheduled scan 1954 * @max_match_sets: maximum number of match sets the device can handle 1955 * when performing a scheduled scan, 0 if filtering is not 1956 * supported. 1957 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1958 * add to probe request frames transmitted during a scan, must not 1959 * include fixed IEs like supported rates 1960 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 1961 * scans 1962 * @coverage_class: current coverage class 1963 * @fw_version: firmware version for ethtool reporting 1964 * @hw_version: hardware version for ethtool reporting 1965 * @max_num_pmkids: maximum number of PMKIDs supported by device 1966 * @privid: a pointer that drivers can use to identify if an arbitrary 1967 * wiphy is theirs, e.g. in global notifiers 1968 * @bands: information about bands/channels supported by this device 1969 * 1970 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1971 * transmitted through nl80211, points to an array indexed by interface 1972 * type 1973 * 1974 * @available_antennas_tx: bitmap of antennas which are available to be 1975 * configured as TX antennas. Antenna configuration commands will be 1976 * rejected unless this or @available_antennas_rx is set. 1977 * 1978 * @available_antennas_rx: bitmap of antennas which are available to be 1979 * configured as RX antennas. Antenna configuration commands will be 1980 * rejected unless this or @available_antennas_tx is set. 1981 * 1982 * @probe_resp_offload: 1983 * Bitmap of supported protocols for probe response offloading. 1984 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 1985 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 1986 * 1987 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 1988 * may request, if implemented. 1989 * 1990 * @wowlan: WoWLAN support information 1991 * 1992 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 1993 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 1994 * If null, then none can be over-ridden. 1995 */ 1996 struct wiphy { 1997 /* assign these fields before you register the wiphy */ 1998 1999 /* permanent MAC address(es) */ 2000 u8 perm_addr[ETH_ALEN]; 2001 u8 addr_mask[ETH_ALEN]; 2002 2003 struct mac_address *addresses; 2004 2005 const struct ieee80211_txrx_stypes *mgmt_stypes; 2006 2007 const struct ieee80211_iface_combination *iface_combinations; 2008 int n_iface_combinations; 2009 u16 software_iftypes; 2010 2011 u16 n_addresses; 2012 2013 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 2014 u16 interface_modes; 2015 2016 u32 flags, features; 2017 2018 u32 ap_sme_capa; 2019 2020 enum cfg80211_signal_type signal_type; 2021 2022 int bss_priv_size; 2023 u8 max_scan_ssids; 2024 u8 max_sched_scan_ssids; 2025 u8 max_match_sets; 2026 u16 max_scan_ie_len; 2027 u16 max_sched_scan_ie_len; 2028 2029 int n_cipher_suites; 2030 const u32 *cipher_suites; 2031 2032 u8 retry_short; 2033 u8 retry_long; 2034 u32 frag_threshold; 2035 u32 rts_threshold; 2036 u8 coverage_class; 2037 2038 char fw_version[ETHTOOL_BUSINFO_LEN]; 2039 u32 hw_version; 2040 2041 struct wiphy_wowlan_support wowlan; 2042 2043 u16 max_remain_on_channel_duration; 2044 2045 u8 max_num_pmkids; 2046 2047 u32 available_antennas_tx; 2048 u32 available_antennas_rx; 2049 2050 /* 2051 * Bitmap of supported protocols for probe response offloading 2052 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 2053 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2054 */ 2055 u32 probe_resp_offload; 2056 2057 /* If multiple wiphys are registered and you're handed e.g. 2058 * a regular netdev with assigned ieee80211_ptr, you won't 2059 * know whether it points to a wiphy your driver has registered 2060 * or not. Assign this to something global to your driver to 2061 * help determine whether you own this wiphy or not. */ 2062 const void *privid; 2063 2064 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 2065 2066 /* Lets us get back the wiphy on the callback */ 2067 int (*reg_notifier)(struct wiphy *wiphy, 2068 struct regulatory_request *request); 2069 2070 /* fields below are read-only, assigned by cfg80211 */ 2071 2072 const struct ieee80211_regdomain *regd; 2073 2074 /* the item in /sys/class/ieee80211/ points to this, 2075 * you need use set_wiphy_dev() (see below) */ 2076 struct device dev; 2077 2078 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 2079 bool registered; 2080 2081 /* dir in debugfs: ieee80211/<wiphyname> */ 2082 struct dentry *debugfsdir; 2083 2084 const struct ieee80211_ht_cap *ht_capa_mod_mask; 2085 2086 #ifdef CONFIG_NET_NS 2087 /* the network namespace this phy lives in currently */ 2088 struct net *_net; 2089 #endif 2090 2091 #ifdef CONFIG_CFG80211_WEXT 2092 const struct iw_handler_def *wext; 2093 #endif 2094 2095 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 2096 }; 2097 2098 static inline struct net *wiphy_net(struct wiphy *wiphy) 2099 { 2100 return read_pnet(&wiphy->_net); 2101 } 2102 2103 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 2104 { 2105 write_pnet(&wiphy->_net, net); 2106 } 2107 2108 /** 2109 * wiphy_priv - return priv from wiphy 2110 * 2111 * @wiphy: the wiphy whose priv pointer to return 2112 */ 2113 static inline void *wiphy_priv(struct wiphy *wiphy) 2114 { 2115 BUG_ON(!wiphy); 2116 return &wiphy->priv; 2117 } 2118 2119 /** 2120 * priv_to_wiphy - return the wiphy containing the priv 2121 * 2122 * @priv: a pointer previously returned by wiphy_priv 2123 */ 2124 static inline struct wiphy *priv_to_wiphy(void *priv) 2125 { 2126 BUG_ON(!priv); 2127 return container_of(priv, struct wiphy, priv); 2128 } 2129 2130 /** 2131 * set_wiphy_dev - set device pointer for wiphy 2132 * 2133 * @wiphy: The wiphy whose device to bind 2134 * @dev: The device to parent it to 2135 */ 2136 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 2137 { 2138 wiphy->dev.parent = dev; 2139 } 2140 2141 /** 2142 * wiphy_dev - get wiphy dev pointer 2143 * 2144 * @wiphy: The wiphy whose device struct to look up 2145 */ 2146 static inline struct device *wiphy_dev(struct wiphy *wiphy) 2147 { 2148 return wiphy->dev.parent; 2149 } 2150 2151 /** 2152 * wiphy_name - get wiphy name 2153 * 2154 * @wiphy: The wiphy whose name to return 2155 */ 2156 static inline const char *wiphy_name(const struct wiphy *wiphy) 2157 { 2158 return dev_name(&wiphy->dev); 2159 } 2160 2161 /** 2162 * wiphy_new - create a new wiphy for use with cfg80211 2163 * 2164 * @ops: The configuration operations for this device 2165 * @sizeof_priv: The size of the private area to allocate 2166 * 2167 * Create a new wiphy and associate the given operations with it. 2168 * @sizeof_priv bytes are allocated for private use. 2169 * 2170 * The returned pointer must be assigned to each netdev's 2171 * ieee80211_ptr for proper operation. 2172 */ 2173 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 2174 2175 /** 2176 * wiphy_register - register a wiphy with cfg80211 2177 * 2178 * @wiphy: The wiphy to register. 2179 * 2180 * Returns a non-negative wiphy index or a negative error code. 2181 */ 2182 extern int wiphy_register(struct wiphy *wiphy); 2183 2184 /** 2185 * wiphy_unregister - deregister a wiphy from cfg80211 2186 * 2187 * @wiphy: The wiphy to unregister. 2188 * 2189 * After this call, no more requests can be made with this priv 2190 * pointer, but the call may sleep to wait for an outstanding 2191 * request that is being handled. 2192 */ 2193 extern void wiphy_unregister(struct wiphy *wiphy); 2194 2195 /** 2196 * wiphy_free - free wiphy 2197 * 2198 * @wiphy: The wiphy to free 2199 */ 2200 extern void wiphy_free(struct wiphy *wiphy); 2201 2202 /* internal structs */ 2203 struct cfg80211_conn; 2204 struct cfg80211_internal_bss; 2205 struct cfg80211_cached_keys; 2206 2207 #define MAX_AUTH_BSSES 4 2208 2209 /** 2210 * struct wireless_dev - wireless per-netdev state 2211 * 2212 * This structure must be allocated by the driver/stack 2213 * that uses the ieee80211_ptr field in struct net_device 2214 * (this is intentional so it can be allocated along with 2215 * the netdev.) 2216 * 2217 * @wiphy: pointer to hardware description 2218 * @iftype: interface type 2219 * @list: (private) Used to collect the interfaces 2220 * @netdev: (private) Used to reference back to the netdev 2221 * @current_bss: (private) Used by the internal configuration code 2222 * @channel: (private) Used by the internal configuration code to track 2223 * user-set AP, monitor and WDS channels for wireless extensions 2224 * @bssid: (private) Used by the internal configuration code 2225 * @ssid: (private) Used by the internal configuration code 2226 * @ssid_len: (private) Used by the internal configuration code 2227 * @mesh_id_len: (private) Used by the internal configuration code 2228 * @mesh_id_up_len: (private) Used by the internal configuration code 2229 * @wext: (private) Used by the internal wireless extensions compat code 2230 * @use_4addr: indicates 4addr mode is used on this interface, must be 2231 * set by driver (if supported) on add_interface BEFORE registering the 2232 * netdev and may otherwise be used by driver read-only, will be update 2233 * by cfg80211 on change_interface 2234 * @mgmt_registrations: list of registrations for management frames 2235 * @mgmt_registrations_lock: lock for the list 2236 * @mtx: mutex used to lock data in this struct 2237 * @cleanup_work: work struct used for cleanup that can't be done directly 2238 * @beacon_interval: beacon interval used on this device for transmitting 2239 * beacons, 0 when not valid 2240 */ 2241 struct wireless_dev { 2242 struct wiphy *wiphy; 2243 enum nl80211_iftype iftype; 2244 2245 /* the remainder of this struct should be private to cfg80211 */ 2246 struct list_head list; 2247 struct net_device *netdev; 2248 2249 struct list_head mgmt_registrations; 2250 spinlock_t mgmt_registrations_lock; 2251 2252 struct mutex mtx; 2253 2254 struct work_struct cleanup_work; 2255 2256 bool use_4addr; 2257 2258 /* currently used for IBSS and SME - might be rearranged later */ 2259 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2260 u8 ssid_len, mesh_id_len, mesh_id_up_len; 2261 enum { 2262 CFG80211_SME_IDLE, 2263 CFG80211_SME_CONNECTING, 2264 CFG80211_SME_CONNECTED, 2265 } sme_state; 2266 struct cfg80211_conn *conn; 2267 struct cfg80211_cached_keys *connect_keys; 2268 2269 struct list_head event_list; 2270 spinlock_t event_lock; 2271 2272 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 2273 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 2274 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 2275 struct ieee80211_channel *channel; 2276 2277 bool ps; 2278 int ps_timeout; 2279 2280 int beacon_interval; 2281 2282 u32 ap_unexpected_nlpid; 2283 2284 #ifdef CONFIG_CFG80211_WEXT 2285 /* wext data */ 2286 struct { 2287 struct cfg80211_ibss_params ibss; 2288 struct cfg80211_connect_params connect; 2289 struct cfg80211_cached_keys *keys; 2290 u8 *ie; 2291 size_t ie_len; 2292 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 2293 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2294 s8 default_key, default_mgmt_key; 2295 bool prev_bssid_valid; 2296 } wext; 2297 #endif 2298 }; 2299 2300 /** 2301 * wdev_priv - return wiphy priv from wireless_dev 2302 * 2303 * @wdev: The wireless device whose wiphy's priv pointer to return 2304 */ 2305 static inline void *wdev_priv(struct wireless_dev *wdev) 2306 { 2307 BUG_ON(!wdev); 2308 return wiphy_priv(wdev->wiphy); 2309 } 2310 2311 /** 2312 * DOC: Utility functions 2313 * 2314 * cfg80211 offers a number of utility functions that can be useful. 2315 */ 2316 2317 /** 2318 * ieee80211_channel_to_frequency - convert channel number to frequency 2319 * @chan: channel number 2320 * @band: band, necessary due to channel number overlap 2321 */ 2322 extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 2323 2324 /** 2325 * ieee80211_frequency_to_channel - convert frequency to channel number 2326 * @freq: center frequency 2327 */ 2328 extern int ieee80211_frequency_to_channel(int freq); 2329 2330 /* 2331 * Name indirection necessary because the ieee80211 code also has 2332 * a function named "ieee80211_get_channel", so if you include 2333 * cfg80211's header file you get cfg80211's version, if you try 2334 * to include both header files you'll (rightfully!) get a symbol 2335 * clash. 2336 */ 2337 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 2338 int freq); 2339 /** 2340 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 2341 * @wiphy: the struct wiphy to get the channel for 2342 * @freq: the center frequency of the channel 2343 */ 2344 static inline struct ieee80211_channel * 2345 ieee80211_get_channel(struct wiphy *wiphy, int freq) 2346 { 2347 return __ieee80211_get_channel(wiphy, freq); 2348 } 2349 2350 /** 2351 * ieee80211_get_response_rate - get basic rate for a given rate 2352 * 2353 * @sband: the band to look for rates in 2354 * @basic_rates: bitmap of basic rates 2355 * @bitrate: the bitrate for which to find the basic rate 2356 * 2357 * This function returns the basic rate corresponding to a given 2358 * bitrate, that is the next lower bitrate contained in the basic 2359 * rate map, which is, for this function, given as a bitmap of 2360 * indices of rates in the band's bitrate table. 2361 */ 2362 struct ieee80211_rate * 2363 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 2364 u32 basic_rates, int bitrate); 2365 2366 /* 2367 * Radiotap parsing functions -- for controlled injection support 2368 * 2369 * Implemented in net/wireless/radiotap.c 2370 * Documentation in Documentation/networking/radiotap-headers.txt 2371 */ 2372 2373 struct radiotap_align_size { 2374 uint8_t align:4, size:4; 2375 }; 2376 2377 struct ieee80211_radiotap_namespace { 2378 const struct radiotap_align_size *align_size; 2379 int n_bits; 2380 uint32_t oui; 2381 uint8_t subns; 2382 }; 2383 2384 struct ieee80211_radiotap_vendor_namespaces { 2385 const struct ieee80211_radiotap_namespace *ns; 2386 int n_ns; 2387 }; 2388 2389 /** 2390 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 2391 * @this_arg_index: index of current arg, valid after each successful call 2392 * to ieee80211_radiotap_iterator_next() 2393 * @this_arg: pointer to current radiotap arg; it is valid after each 2394 * call to ieee80211_radiotap_iterator_next() but also after 2395 * ieee80211_radiotap_iterator_init() where it will point to 2396 * the beginning of the actual data portion 2397 * @this_arg_size: length of the current arg, for convenience 2398 * @current_namespace: pointer to the current namespace definition 2399 * (or internally %NULL if the current namespace is unknown) 2400 * @is_radiotap_ns: indicates whether the current namespace is the default 2401 * radiotap namespace or not 2402 * 2403 * @_rtheader: pointer to the radiotap header we are walking through 2404 * @_max_length: length of radiotap header in cpu byte ordering 2405 * @_arg_index: next argument index 2406 * @_arg: next argument pointer 2407 * @_next_bitmap: internal pointer to next present u32 2408 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 2409 * @_vns: vendor namespace definitions 2410 * @_next_ns_data: beginning of the next namespace's data 2411 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 2412 * next bitmap word 2413 * 2414 * Describes the radiotap parser state. Fields prefixed with an underscore 2415 * must not be used by users of the parser, only by the parser internally. 2416 */ 2417 2418 struct ieee80211_radiotap_iterator { 2419 struct ieee80211_radiotap_header *_rtheader; 2420 const struct ieee80211_radiotap_vendor_namespaces *_vns; 2421 const struct ieee80211_radiotap_namespace *current_namespace; 2422 2423 unsigned char *_arg, *_next_ns_data; 2424 __le32 *_next_bitmap; 2425 2426 unsigned char *this_arg; 2427 int this_arg_index; 2428 int this_arg_size; 2429 2430 int is_radiotap_ns; 2431 2432 int _max_length; 2433 int _arg_index; 2434 uint32_t _bitmap_shifter; 2435 int _reset_on_ext; 2436 }; 2437 2438 extern int ieee80211_radiotap_iterator_init( 2439 struct ieee80211_radiotap_iterator *iterator, 2440 struct ieee80211_radiotap_header *radiotap_header, 2441 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 2442 2443 extern int ieee80211_radiotap_iterator_next( 2444 struct ieee80211_radiotap_iterator *iterator); 2445 2446 2447 extern const unsigned char rfc1042_header[6]; 2448 extern const unsigned char bridge_tunnel_header[6]; 2449 2450 /** 2451 * ieee80211_get_hdrlen_from_skb - get header length from data 2452 * 2453 * Given an skb with a raw 802.11 header at the data pointer this function 2454 * returns the 802.11 header length in bytes (not including encryption 2455 * headers). If the data in the sk_buff is too short to contain a valid 802.11 2456 * header the function returns 0. 2457 * 2458 * @skb: the frame 2459 */ 2460 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 2461 2462 /** 2463 * ieee80211_hdrlen - get header length in bytes from frame control 2464 * @fc: frame control field in little-endian format 2465 */ 2466 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 2467 2468 /** 2469 * DOC: Data path helpers 2470 * 2471 * In addition to generic utilities, cfg80211 also offers 2472 * functions that help implement the data path for devices 2473 * that do not do the 802.11/802.3 conversion on the device. 2474 */ 2475 2476 /** 2477 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 2478 * @skb: the 802.11 data frame 2479 * @addr: the device MAC address 2480 * @iftype: the virtual interface type 2481 */ 2482 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 2483 enum nl80211_iftype iftype); 2484 2485 /** 2486 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 2487 * @skb: the 802.3 frame 2488 * @addr: the device MAC address 2489 * @iftype: the virtual interface type 2490 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 2491 * @qos: build 802.11 QoS data frame 2492 */ 2493 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 2494 enum nl80211_iftype iftype, u8 *bssid, bool qos); 2495 2496 /** 2497 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 2498 * 2499 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 2500 * 802.3 frames. The @list will be empty if the decode fails. The 2501 * @skb is consumed after the function returns. 2502 * 2503 * @skb: The input IEEE 802.11n A-MSDU frame. 2504 * @list: The output list of 802.3 frames. It must be allocated and 2505 * initialized by by the caller. 2506 * @addr: The device MAC address. 2507 * @iftype: The device interface type. 2508 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 2509 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 2510 */ 2511 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 2512 const u8 *addr, enum nl80211_iftype iftype, 2513 const unsigned int extra_headroom, 2514 bool has_80211_header); 2515 2516 /** 2517 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 2518 * @skb: the data frame 2519 */ 2520 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 2521 2522 /** 2523 * cfg80211_find_ie - find information element in data 2524 * 2525 * @eid: element ID 2526 * @ies: data consisting of IEs 2527 * @len: length of data 2528 * 2529 * This function will return %NULL if the element ID could 2530 * not be found or if the element is invalid (claims to be 2531 * longer than the given data), or a pointer to the first byte 2532 * of the requested element, that is the byte containing the 2533 * element ID. There are no checks on the element length 2534 * other than having to fit into the given data. 2535 */ 2536 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2537 2538 /** 2539 * cfg80211_find_vendor_ie - find vendor specific information element in data 2540 * 2541 * @oui: vendor OUI 2542 * @oui_type: vendor-specific OUI type 2543 * @ies: data consisting of IEs 2544 * @len: length of data 2545 * 2546 * This function will return %NULL if the vendor specific element ID 2547 * could not be found or if the element is invalid (claims to be 2548 * longer than the given data), or a pointer to the first byte 2549 * of the requested element, that is the byte containing the 2550 * element ID. There are no checks on the element length 2551 * other than having to fit into the given data. 2552 */ 2553 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 2554 const u8 *ies, int len); 2555 2556 /** 2557 * DOC: Regulatory enforcement infrastructure 2558 * 2559 * TODO 2560 */ 2561 2562 /** 2563 * regulatory_hint - driver hint to the wireless core a regulatory domain 2564 * @wiphy: the wireless device giving the hint (used only for reporting 2565 * conflicts) 2566 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2567 * should be in. If @rd is set this should be NULL. Note that if you 2568 * set this to NULL you should still set rd->alpha2 to some accepted 2569 * alpha2. 2570 * 2571 * Wireless drivers can use this function to hint to the wireless core 2572 * what it believes should be the current regulatory domain by 2573 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2574 * domain should be in or by providing a completely build regulatory domain. 2575 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2576 * for a regulatory domain structure for the respective country. 2577 * 2578 * The wiphy must have been registered to cfg80211 prior to this call. 2579 * For cfg80211 drivers this means you must first use wiphy_register(), 2580 * for mac80211 drivers you must first use ieee80211_register_hw(). 2581 * 2582 * Drivers should check the return value, its possible you can get 2583 * an -ENOMEM. 2584 */ 2585 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2586 2587 /** 2588 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2589 * @wiphy: the wireless device we want to process the regulatory domain on 2590 * @regd: the custom regulatory domain to use for this wiphy 2591 * 2592 * Drivers can sometimes have custom regulatory domains which do not apply 2593 * to a specific country. Drivers can use this to apply such custom regulatory 2594 * domains. This routine must be called prior to wiphy registration. The 2595 * custom regulatory domain will be trusted completely and as such previous 2596 * default channel settings will be disregarded. If no rule is found for a 2597 * channel on the regulatory domain the channel will be disabled. 2598 */ 2599 extern void wiphy_apply_custom_regulatory( 2600 struct wiphy *wiphy, 2601 const struct ieee80211_regdomain *regd); 2602 2603 /** 2604 * freq_reg_info - get regulatory information for the given frequency 2605 * @wiphy: the wiphy for which we want to process this rule for 2606 * @center_freq: Frequency in KHz for which we want regulatory information for 2607 * @desired_bw_khz: the desired max bandwidth you want to use per 2608 * channel. Note that this is still 20 MHz if you want to use HT40 2609 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2610 * If set to 0 we'll assume you want the standard 20 MHz. 2611 * @reg_rule: the regulatory rule which we have for this frequency 2612 * 2613 * Use this function to get the regulatory rule for a specific frequency on 2614 * a given wireless device. If the device has a specific regulatory domain 2615 * it wants to follow we respect that unless a country IE has been received 2616 * and processed already. 2617 * 2618 * Returns 0 if it was able to find a valid regulatory rule which does 2619 * apply to the given center_freq otherwise it returns non-zero. It will 2620 * also return -ERANGE if we determine the given center_freq does not even have 2621 * a regulatory rule for a frequency range in the center_freq's band. See 2622 * freq_in_rule_band() for our current definition of a band -- this is purely 2623 * subjective and right now its 802.11 specific. 2624 */ 2625 extern int freq_reg_info(struct wiphy *wiphy, 2626 u32 center_freq, 2627 u32 desired_bw_khz, 2628 const struct ieee80211_reg_rule **reg_rule); 2629 2630 /* 2631 * callbacks for asynchronous cfg80211 methods, notification 2632 * functions and BSS handling helpers 2633 */ 2634 2635 /** 2636 * cfg80211_scan_done - notify that scan finished 2637 * 2638 * @request: the corresponding scan request 2639 * @aborted: set to true if the scan was aborted for any reason, 2640 * userspace will be notified of that 2641 */ 2642 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2643 2644 /** 2645 * cfg80211_sched_scan_results - notify that new scan results are available 2646 * 2647 * @wiphy: the wiphy which got scheduled scan results 2648 */ 2649 void cfg80211_sched_scan_results(struct wiphy *wiphy); 2650 2651 /** 2652 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 2653 * 2654 * @wiphy: the wiphy on which the scheduled scan stopped 2655 * 2656 * The driver can call this function to inform cfg80211 that the 2657 * scheduled scan had to be stopped, for whatever reason. The driver 2658 * is then called back via the sched_scan_stop operation when done. 2659 */ 2660 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 2661 2662 /** 2663 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2664 * 2665 * @wiphy: the wiphy reporting the BSS 2666 * @channel: The channel the frame was received on 2667 * @mgmt: the management frame (probe response or beacon) 2668 * @len: length of the management frame 2669 * @signal: the signal strength, type depends on the wiphy's signal_type 2670 * @gfp: context flags 2671 * 2672 * This informs cfg80211 that BSS information was found and 2673 * the BSS should be updated/added. 2674 * 2675 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2676 */ 2677 struct cfg80211_bss * __must_check 2678 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2679 struct ieee80211_channel *channel, 2680 struct ieee80211_mgmt *mgmt, size_t len, 2681 s32 signal, gfp_t gfp); 2682 2683 /** 2684 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2685 * 2686 * @wiphy: the wiphy reporting the BSS 2687 * @channel: The channel the frame was received on 2688 * @bssid: the BSSID of the BSS 2689 * @timestamp: the TSF timestamp sent by the peer 2690 * @capability: the capability field sent by the peer 2691 * @beacon_interval: the beacon interval announced by the peer 2692 * @ie: additional IEs sent by the peer 2693 * @ielen: length of the additional IEs 2694 * @signal: the signal strength, type depends on the wiphy's signal_type 2695 * @gfp: context flags 2696 * 2697 * This informs cfg80211 that BSS information was found and 2698 * the BSS should be updated/added. 2699 * 2700 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2701 */ 2702 struct cfg80211_bss * __must_check 2703 cfg80211_inform_bss(struct wiphy *wiphy, 2704 struct ieee80211_channel *channel, 2705 const u8 *bssid, 2706 u64 timestamp, u16 capability, u16 beacon_interval, 2707 const u8 *ie, size_t ielen, 2708 s32 signal, gfp_t gfp); 2709 2710 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2711 struct ieee80211_channel *channel, 2712 const u8 *bssid, 2713 const u8 *ssid, size_t ssid_len, 2714 u16 capa_mask, u16 capa_val); 2715 static inline struct cfg80211_bss * 2716 cfg80211_get_ibss(struct wiphy *wiphy, 2717 struct ieee80211_channel *channel, 2718 const u8 *ssid, size_t ssid_len) 2719 { 2720 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2721 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2722 } 2723 2724 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2725 struct ieee80211_channel *channel, 2726 const u8 *meshid, size_t meshidlen, 2727 const u8 *meshcfg); 2728 void cfg80211_put_bss(struct cfg80211_bss *bss); 2729 2730 /** 2731 * cfg80211_unlink_bss - unlink BSS from internal data structures 2732 * @wiphy: the wiphy 2733 * @bss: the bss to remove 2734 * 2735 * This function removes the given BSS from the internal data structures 2736 * thereby making it no longer show up in scan results etc. Use this 2737 * function when you detect a BSS is gone. Normally BSSes will also time 2738 * out, so it is not necessary to use this function at all. 2739 */ 2740 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2741 2742 /** 2743 * cfg80211_send_rx_auth - notification of processed authentication 2744 * @dev: network device 2745 * @buf: authentication frame (header + body) 2746 * @len: length of the frame data 2747 * 2748 * This function is called whenever an authentication has been processed in 2749 * station mode. The driver is required to call either this function or 2750 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2751 * call. This function may sleep. 2752 */ 2753 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2754 2755 /** 2756 * cfg80211_send_auth_timeout - notification of timed out authentication 2757 * @dev: network device 2758 * @addr: The MAC address of the device with which the authentication timed out 2759 * 2760 * This function may sleep. 2761 */ 2762 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2763 2764 /** 2765 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2766 * @dev: network device 2767 * @addr: The MAC address of the device with which the authentication timed out 2768 * 2769 * When a pending authentication had no action yet, the driver may decide 2770 * to not send a deauth frame, but in that case must calls this function 2771 * to tell cfg80211 about this decision. It is only valid to call this 2772 * function within the deauth() callback. 2773 */ 2774 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2775 2776 /** 2777 * cfg80211_send_rx_assoc - notification of processed association 2778 * @dev: network device 2779 * @buf: (re)association response frame (header + body) 2780 * @len: length of the frame data 2781 * 2782 * This function is called whenever a (re)association response has been 2783 * processed in station mode. The driver is required to call either this 2784 * function or cfg80211_send_assoc_timeout() to indicate the result of 2785 * cfg80211_ops::assoc() call. This function may sleep. 2786 */ 2787 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2788 2789 /** 2790 * cfg80211_send_assoc_timeout - notification of timed out association 2791 * @dev: network device 2792 * @addr: The MAC address of the device with which the association timed out 2793 * 2794 * This function may sleep. 2795 */ 2796 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2797 2798 /** 2799 * cfg80211_send_deauth - notification of processed deauthentication 2800 * @dev: network device 2801 * @buf: deauthentication frame (header + body) 2802 * @len: length of the frame data 2803 * 2804 * This function is called whenever deauthentication has been processed in 2805 * station mode. This includes both received deauthentication frames and 2806 * locally generated ones. This function may sleep. 2807 */ 2808 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2809 2810 /** 2811 * __cfg80211_send_deauth - notification of processed deauthentication 2812 * @dev: network device 2813 * @buf: deauthentication frame (header + body) 2814 * @len: length of the frame data 2815 * 2816 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2817 */ 2818 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2819 2820 /** 2821 * cfg80211_send_disassoc - notification of processed disassociation 2822 * @dev: network device 2823 * @buf: disassociation response frame (header + body) 2824 * @len: length of the frame data 2825 * 2826 * This function is called whenever disassociation has been processed in 2827 * station mode. This includes both received disassociation frames and locally 2828 * generated ones. This function may sleep. 2829 */ 2830 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2831 2832 /** 2833 * __cfg80211_send_disassoc - notification of processed disassociation 2834 * @dev: network device 2835 * @buf: disassociation response frame (header + body) 2836 * @len: length of the frame data 2837 * 2838 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2839 */ 2840 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2841 size_t len); 2842 2843 /** 2844 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2845 * @dev: network device 2846 * @buf: deauthentication frame (header + body) 2847 * @len: length of the frame data 2848 * 2849 * This function is called whenever a received Deauthentication frame has been 2850 * dropped in station mode because of MFP being used but the Deauthentication 2851 * frame was not protected. This function may sleep. 2852 */ 2853 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2854 size_t len); 2855 2856 /** 2857 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2858 * @dev: network device 2859 * @buf: disassociation frame (header + body) 2860 * @len: length of the frame data 2861 * 2862 * This function is called whenever a received Disassociation frame has been 2863 * dropped in station mode because of MFP being used but the Disassociation 2864 * frame was not protected. This function may sleep. 2865 */ 2866 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2867 size_t len); 2868 2869 /** 2870 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2871 * @dev: network device 2872 * @addr: The source MAC address of the frame 2873 * @key_type: The key type that the received frame used 2874 * @key_id: Key identifier (0..3). Can be -1 if missing. 2875 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2876 * @gfp: allocation flags 2877 * 2878 * This function is called whenever the local MAC detects a MIC failure in a 2879 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2880 * primitive. 2881 */ 2882 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2883 enum nl80211_key_type key_type, int key_id, 2884 const u8 *tsc, gfp_t gfp); 2885 2886 /** 2887 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2888 * 2889 * @dev: network device 2890 * @bssid: the BSSID of the IBSS joined 2891 * @gfp: allocation flags 2892 * 2893 * This function notifies cfg80211 that the device joined an IBSS or 2894 * switched to a different BSSID. Before this function can be called, 2895 * either a beacon has to have been received from the IBSS, or one of 2896 * the cfg80211_inform_bss{,_frame} functions must have been called 2897 * with the locally generated beacon -- this guarantees that there is 2898 * always a scan result for this IBSS. cfg80211 will handle the rest. 2899 */ 2900 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2901 2902 /** 2903 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 2904 * 2905 * @dev: network device 2906 * @macaddr: the MAC address of the new candidate 2907 * @ie: information elements advertised by the peer candidate 2908 * @ie_len: lenght of the information elements buffer 2909 * @gfp: allocation flags 2910 * 2911 * This function notifies cfg80211 that the mesh peer candidate has been 2912 * detected, most likely via a beacon or, less likely, via a probe response. 2913 * cfg80211 then sends a notification to userspace. 2914 */ 2915 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 2916 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 2917 2918 /** 2919 * DOC: RFkill integration 2920 * 2921 * RFkill integration in cfg80211 is almost invisible to drivers, 2922 * as cfg80211 automatically registers an rfkill instance for each 2923 * wireless device it knows about. Soft kill is also translated 2924 * into disconnecting and turning all interfaces off, drivers are 2925 * expected to turn off the device when all interfaces are down. 2926 * 2927 * However, devices may have a hard RFkill line, in which case they 2928 * also need to interact with the rfkill subsystem, via cfg80211. 2929 * They can do this with a few helper functions documented here. 2930 */ 2931 2932 /** 2933 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2934 * @wiphy: the wiphy 2935 * @blocked: block status 2936 */ 2937 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2938 2939 /** 2940 * wiphy_rfkill_start_polling - start polling rfkill 2941 * @wiphy: the wiphy 2942 */ 2943 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2944 2945 /** 2946 * wiphy_rfkill_stop_polling - stop polling rfkill 2947 * @wiphy: the wiphy 2948 */ 2949 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2950 2951 #ifdef CONFIG_NL80211_TESTMODE 2952 /** 2953 * DOC: Test mode 2954 * 2955 * Test mode is a set of utility functions to allow drivers to 2956 * interact with driver-specific tools to aid, for instance, 2957 * factory programming. 2958 * 2959 * This chapter describes how drivers interact with it, for more 2960 * information see the nl80211 book's chapter on it. 2961 */ 2962 2963 /** 2964 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2965 * @wiphy: the wiphy 2966 * @approxlen: an upper bound of the length of the data that will 2967 * be put into the skb 2968 * 2969 * This function allocates and pre-fills an skb for a reply to 2970 * the testmode command. Since it is intended for a reply, calling 2971 * it outside of the @testmode_cmd operation is invalid. 2972 * 2973 * The returned skb (or %NULL if any errors happen) is pre-filled 2974 * with the wiphy index and set up in a way that any data that is 2975 * put into the skb (with skb_put(), nla_put() or similar) will end 2976 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2977 * needs to be done with the skb is adding data for the corresponding 2978 * userspace tool which can then read that data out of the testdata 2979 * attribute. You must not modify the skb in any other way. 2980 * 2981 * When done, call cfg80211_testmode_reply() with the skb and return 2982 * its error code as the result of the @testmode_cmd operation. 2983 */ 2984 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2985 int approxlen); 2986 2987 /** 2988 * cfg80211_testmode_reply - send the reply skb 2989 * @skb: The skb, must have been allocated with 2990 * cfg80211_testmode_alloc_reply_skb() 2991 * 2992 * Returns an error code or 0 on success, since calling this 2993 * function will usually be the last thing before returning 2994 * from the @testmode_cmd you should return the error code. 2995 * Note that this function consumes the skb regardless of the 2996 * return value. 2997 */ 2998 int cfg80211_testmode_reply(struct sk_buff *skb); 2999 3000 /** 3001 * cfg80211_testmode_alloc_event_skb - allocate testmode event 3002 * @wiphy: the wiphy 3003 * @approxlen: an upper bound of the length of the data that will 3004 * be put into the skb 3005 * @gfp: allocation flags 3006 * 3007 * This function allocates and pre-fills an skb for an event on the 3008 * testmode multicast group. 3009 * 3010 * The returned skb (or %NULL if any errors happen) is set up in the 3011 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 3012 * for an event. As there, you should simply add data to it that will 3013 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 3014 * not modify the skb in any other way. 3015 * 3016 * When done filling the skb, call cfg80211_testmode_event() with the 3017 * skb to send the event. 3018 */ 3019 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 3020 int approxlen, gfp_t gfp); 3021 3022 /** 3023 * cfg80211_testmode_event - send the event 3024 * @skb: The skb, must have been allocated with 3025 * cfg80211_testmode_alloc_event_skb() 3026 * @gfp: allocation flags 3027 * 3028 * This function sends the given @skb, which must have been allocated 3029 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 3030 * consumes it. 3031 */ 3032 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 3033 3034 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 3035 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 3036 #else 3037 #define CFG80211_TESTMODE_CMD(cmd) 3038 #define CFG80211_TESTMODE_DUMP(cmd) 3039 #endif 3040 3041 /** 3042 * cfg80211_connect_result - notify cfg80211 of connection result 3043 * 3044 * @dev: network device 3045 * @bssid: the BSSID of the AP 3046 * @req_ie: association request IEs (maybe be %NULL) 3047 * @req_ie_len: association request IEs length 3048 * @resp_ie: association response IEs (may be %NULL) 3049 * @resp_ie_len: assoc response IEs length 3050 * @status: status code, 0 for successful connection, use 3051 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 3052 * the real status code for failures. 3053 * @gfp: allocation flags 3054 * 3055 * It should be called by the underlying driver whenever connect() has 3056 * succeeded. 3057 */ 3058 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 3059 const u8 *req_ie, size_t req_ie_len, 3060 const u8 *resp_ie, size_t resp_ie_len, 3061 u16 status, gfp_t gfp); 3062 3063 /** 3064 * cfg80211_roamed - notify cfg80211 of roaming 3065 * 3066 * @dev: network device 3067 * @channel: the channel of the new AP 3068 * @bssid: the BSSID of the new AP 3069 * @req_ie: association request IEs (maybe be %NULL) 3070 * @req_ie_len: association request IEs length 3071 * @resp_ie: association response IEs (may be %NULL) 3072 * @resp_ie_len: assoc response IEs length 3073 * @gfp: allocation flags 3074 * 3075 * It should be called by the underlying driver whenever it roamed 3076 * from one AP to another while connected. 3077 */ 3078 void cfg80211_roamed(struct net_device *dev, 3079 struct ieee80211_channel *channel, 3080 const u8 *bssid, 3081 const u8 *req_ie, size_t req_ie_len, 3082 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3083 3084 /** 3085 * cfg80211_roamed_bss - notify cfg80211 of roaming 3086 * 3087 * @dev: network device 3088 * @bss: entry of bss to which STA got roamed 3089 * @req_ie: association request IEs (maybe be %NULL) 3090 * @req_ie_len: association request IEs length 3091 * @resp_ie: association response IEs (may be %NULL) 3092 * @resp_ie_len: assoc response IEs length 3093 * @gfp: allocation flags 3094 * 3095 * This is just a wrapper to notify cfg80211 of roaming event with driver 3096 * passing bss to avoid a race in timeout of the bss entry. It should be 3097 * called by the underlying driver whenever it roamed from one AP to another 3098 * while connected. Drivers which have roaming implemented in firmware 3099 * may use this function to avoid a race in bss entry timeout where the bss 3100 * entry of the new AP is seen in the driver, but gets timed out by the time 3101 * it is accessed in __cfg80211_roamed() due to delay in scheduling 3102 * rdev->event_work. In case of any failures, the reference is released 3103 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 3104 * it will be released while diconneting from the current bss. 3105 */ 3106 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 3107 const u8 *req_ie, size_t req_ie_len, 3108 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3109 3110 /** 3111 * cfg80211_disconnected - notify cfg80211 that connection was dropped 3112 * 3113 * @dev: network device 3114 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 3115 * @ie_len: length of IEs 3116 * @reason: reason code for the disconnection, set it to 0 if unknown 3117 * @gfp: allocation flags 3118 * 3119 * After it calls this function, the driver should enter an idle state 3120 * and not try to connect to any AP any more. 3121 */ 3122 void cfg80211_disconnected(struct net_device *dev, u16 reason, 3123 u8 *ie, size_t ie_len, gfp_t gfp); 3124 3125 /** 3126 * cfg80211_ready_on_channel - notification of remain_on_channel start 3127 * @dev: network device 3128 * @cookie: the request cookie 3129 * @chan: The current channel (from remain_on_channel request) 3130 * @channel_type: Channel type 3131 * @duration: Duration in milliseconds that the driver intents to remain on the 3132 * channel 3133 * @gfp: allocation flags 3134 */ 3135 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 3136 struct ieee80211_channel *chan, 3137 enum nl80211_channel_type channel_type, 3138 unsigned int duration, gfp_t gfp); 3139 3140 /** 3141 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 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 * @gfp: allocation flags 3147 */ 3148 void cfg80211_remain_on_channel_expired(struct net_device *dev, 3149 u64 cookie, 3150 struct ieee80211_channel *chan, 3151 enum nl80211_channel_type channel_type, 3152 gfp_t gfp); 3153 3154 3155 /** 3156 * cfg80211_new_sta - notify userspace about station 3157 * 3158 * @dev: the netdev 3159 * @mac_addr: the station's address 3160 * @sinfo: the station information 3161 * @gfp: allocation flags 3162 */ 3163 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 3164 struct station_info *sinfo, gfp_t gfp); 3165 3166 /** 3167 * cfg80211_del_sta - notify userspace about deletion of a station 3168 * 3169 * @dev: the netdev 3170 * @mac_addr: the station's address 3171 * @gfp: allocation flags 3172 */ 3173 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp); 3174 3175 /** 3176 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 3177 * @dev: network device 3178 * @freq: Frequency on which the frame was received in MHz 3179 * @buf: Management frame (header + body) 3180 * @len: length of the frame data 3181 * @gfp: context flags 3182 * 3183 * Returns %true if a user space application has registered for this frame. 3184 * For action frames, that makes it responsible for rejecting unrecognized 3185 * action frames; %false otherwise, in which case for action frames the 3186 * driver is responsible for rejecting the frame. 3187 * 3188 * This function is called whenever an Action frame is received for a station 3189 * mode interface, but is not processed in kernel. 3190 */ 3191 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 3192 size_t len, gfp_t gfp); 3193 3194 /** 3195 * cfg80211_mgmt_tx_status - notification of TX status for management frame 3196 * @dev: network device 3197 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 3198 * @buf: Management frame (header + body) 3199 * @len: length of the frame data 3200 * @ack: Whether frame was acknowledged 3201 * @gfp: context flags 3202 * 3203 * This function is called whenever a management frame was requested to be 3204 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 3205 * transmission attempt. 3206 */ 3207 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 3208 const u8 *buf, size_t len, bool ack, gfp_t gfp); 3209 3210 3211 /** 3212 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 3213 * @dev: network device 3214 * @rssi_event: the triggered RSSI event 3215 * @gfp: context flags 3216 * 3217 * This function is called when a configured connection quality monitoring 3218 * rssi threshold reached event occurs. 3219 */ 3220 void cfg80211_cqm_rssi_notify(struct net_device *dev, 3221 enum nl80211_cqm_rssi_threshold_event rssi_event, 3222 gfp_t gfp); 3223 3224 /** 3225 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 3226 * @dev: network device 3227 * @peer: peer's MAC address 3228 * @num_packets: how many packets were lost -- should be a fixed threshold 3229 * but probably no less than maybe 50, or maybe a throughput dependent 3230 * threshold (to account for temporary interference) 3231 * @gfp: context flags 3232 */ 3233 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 3234 const u8 *peer, u32 num_packets, gfp_t gfp); 3235 3236 /** 3237 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 3238 * @dev: network device 3239 * @bssid: BSSID of AP (to avoid races) 3240 * @replay_ctr: new replay counter 3241 * @gfp: allocation flags 3242 */ 3243 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 3244 const u8 *replay_ctr, gfp_t gfp); 3245 3246 /** 3247 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 3248 * @dev: network device 3249 * @index: candidate index (the smaller the index, the higher the priority) 3250 * @bssid: BSSID of AP 3251 * @preauth: Whether AP advertises support for RSN pre-authentication 3252 * @gfp: allocation flags 3253 */ 3254 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 3255 const u8 *bssid, bool preauth, gfp_t gfp); 3256 3257 /** 3258 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 3259 * @dev: The device the frame matched to 3260 * @addr: the transmitter address 3261 * @gfp: context flags 3262 * 3263 * This function is used in AP mode (only!) to inform userspace that 3264 * a spurious class 3 frame was received, to be able to deauth the 3265 * sender. 3266 * Returns %true if the frame was passed to userspace (or this failed 3267 * for a reason other than not having a subscription.) 3268 */ 3269 bool cfg80211_rx_spurious_frame(struct net_device *dev, 3270 const u8 *addr, gfp_t gfp); 3271 3272 /** 3273 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 3274 * @dev: The device the frame matched to 3275 * @addr: the transmitter address 3276 * @gfp: context flags 3277 * 3278 * This function is used in AP mode (only!) to inform userspace that 3279 * an associated station sent a 4addr frame but that wasn't expected. 3280 * It is allowed and desirable to send this event only once for each 3281 * station to avoid event flooding. 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_unexpected_4addr_frame(struct net_device *dev, 3286 const u8 *addr, gfp_t gfp); 3287 3288 /** 3289 * cfg80211_probe_status - notify userspace about probe status 3290 * @dev: the device the probe was sent on 3291 * @addr: the address of the peer 3292 * @cookie: the cookie filled in @probe_client previously 3293 * @acked: indicates whether probe was acked or not 3294 * @gfp: allocation flags 3295 */ 3296 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 3297 u64 cookie, bool acked, gfp_t gfp); 3298 3299 /** 3300 * cfg80211_report_obss_beacon - report beacon from other APs 3301 * @wiphy: The wiphy that received the beacon 3302 * @frame: the frame 3303 * @len: length of the frame 3304 * @freq: frequency the frame was received on 3305 * @gfp: allocation flags 3306 * 3307 * Use this function to report to userspace when a beacon was 3308 * received. It is not useful to call this when there is no 3309 * netdev that is in AP/GO mode. 3310 */ 3311 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 3312 const u8 *frame, size_t len, 3313 int freq, gfp_t gfp); 3314 3315 /* 3316 * cfg80211_can_beacon_sec_chan - test if ht40 on extension channel can be used 3317 * @wiphy: the wiphy 3318 * @chan: main channel 3319 * @channel_type: HT mode 3320 */ 3321 int cfg80211_can_beacon_sec_chan(struct wiphy *wiphy, 3322 struct ieee80211_channel *chan, 3323 enum nl80211_channel_type channel_type); 3324 3325 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 3326 3327 /* wiphy_printk helpers, similar to dev_printk */ 3328 3329 #define wiphy_printk(level, wiphy, format, args...) \ 3330 dev_printk(level, &(wiphy)->dev, format, ##args) 3331 #define wiphy_emerg(wiphy, format, args...) \ 3332 dev_emerg(&(wiphy)->dev, format, ##args) 3333 #define wiphy_alert(wiphy, format, args...) \ 3334 dev_alert(&(wiphy)->dev, format, ##args) 3335 #define wiphy_crit(wiphy, format, args...) \ 3336 dev_crit(&(wiphy)->dev, format, ##args) 3337 #define wiphy_err(wiphy, format, args...) \ 3338 dev_err(&(wiphy)->dev, format, ##args) 3339 #define wiphy_warn(wiphy, format, args...) \ 3340 dev_warn(&(wiphy)->dev, format, ##args) 3341 #define wiphy_notice(wiphy, format, args...) \ 3342 dev_notice(&(wiphy)->dev, format, ##args) 3343 #define wiphy_info(wiphy, format, args...) \ 3344 dev_info(&(wiphy)->dev, format, ##args) 3345 3346 #define wiphy_debug(wiphy, format, args...) \ 3347 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 3348 3349 #define wiphy_dbg(wiphy, format, args...) \ 3350 dev_dbg(&(wiphy)->dev, format, ##args) 3351 3352 #if defined(VERBOSE_DEBUG) 3353 #define wiphy_vdbg wiphy_dbg 3354 #else 3355 #define wiphy_vdbg(wiphy, format, args...) \ 3356 ({ \ 3357 if (0) \ 3358 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 3359 0; \ 3360 }) 3361 #endif 3362 3363 /* 3364 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 3365 * of using a WARN/WARN_ON to get the message out, including the 3366 * file/line information and a backtrace. 3367 */ 3368 #define wiphy_WARN(wiphy, format, args...) \ 3369 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 3370 3371 #endif /* __NET_CFG80211_H */ 3372