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_fixed: The channel should be fixed -- do not search for 1144 * IBSSs to join on other channels. 1145 * @ie: information element(s) to include in the beacon 1146 * @ie_len: length of that 1147 * @beacon_interval: beacon interval to use 1148 * @privacy: this is a protected network, keys will be configured 1149 * after joining 1150 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1151 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1152 */ 1153 struct cfg80211_ibss_params { 1154 u8 *ssid; 1155 u8 *bssid; 1156 struct ieee80211_channel *channel; 1157 enum nl80211_channel_type channel_type; 1158 u8 *ie; 1159 u8 ssid_len, ie_len; 1160 u16 beacon_interval; 1161 u32 basic_rates; 1162 bool channel_fixed; 1163 bool privacy; 1164 int mcast_rate[IEEE80211_NUM_BANDS]; 1165 }; 1166 1167 /** 1168 * struct cfg80211_connect_params - Connection parameters 1169 * 1170 * This structure provides information needed to complete IEEE 802.11 1171 * authentication and association. 1172 * 1173 * @channel: The channel to use or %NULL if not specified (auto-select based 1174 * on scan results) 1175 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1176 * results) 1177 * @ssid: SSID 1178 * @ssid_len: Length of ssid in octets 1179 * @auth_type: Authentication type (algorithm) 1180 * @ie: IEs for association request 1181 * @ie_len: Length of assoc_ie in octets 1182 * @privacy: indicates whether privacy-enabled APs should be used 1183 * @crypto: crypto settings 1184 * @key_len: length of WEP key for shared key authentication 1185 * @key_idx: index of WEP key for shared key authentication 1186 * @key: WEP key for shared key authentication 1187 * @flags: See &enum cfg80211_assoc_req_flags 1188 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1189 * will be used in ht_capa. Un-supported values will be ignored. 1190 * @ht_capa_mask: The bits of ht_capa which are to be used. 1191 */ 1192 struct cfg80211_connect_params { 1193 struct ieee80211_channel *channel; 1194 u8 *bssid; 1195 u8 *ssid; 1196 size_t ssid_len; 1197 enum nl80211_auth_type auth_type; 1198 u8 *ie; 1199 size_t ie_len; 1200 bool privacy; 1201 struct cfg80211_crypto_settings crypto; 1202 const u8 *key; 1203 u8 key_len, key_idx; 1204 u32 flags; 1205 struct ieee80211_ht_cap ht_capa; 1206 struct ieee80211_ht_cap ht_capa_mask; 1207 }; 1208 1209 /** 1210 * enum wiphy_params_flags - set_wiphy_params bitfield values 1211 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1212 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1213 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1214 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1215 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1216 */ 1217 enum wiphy_params_flags { 1218 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1219 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1220 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1221 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1222 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1223 }; 1224 1225 /* 1226 * cfg80211_bitrate_mask - masks for bitrate control 1227 */ 1228 struct cfg80211_bitrate_mask { 1229 struct { 1230 u32 legacy; 1231 /* TODO: add support for masking MCS rates; e.g.: */ 1232 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 1233 } control[IEEE80211_NUM_BANDS]; 1234 }; 1235 /** 1236 * struct cfg80211_pmksa - PMK Security Association 1237 * 1238 * This structure is passed to the set/del_pmksa() method for PMKSA 1239 * caching. 1240 * 1241 * @bssid: The AP's BSSID. 1242 * @pmkid: The PMK material itself. 1243 */ 1244 struct cfg80211_pmksa { 1245 u8 *bssid; 1246 u8 *pmkid; 1247 }; 1248 1249 /** 1250 * struct cfg80211_wowlan_trig_pkt_pattern - packet pattern 1251 * @mask: bitmask where to match pattern and where to ignore bytes, 1252 * one bit per byte, in same format as nl80211 1253 * @pattern: bytes to match where bitmask is 1 1254 * @pattern_len: length of pattern (in bytes) 1255 * 1256 * Internal note: @mask and @pattern are allocated in one chunk of 1257 * memory, free @mask only! 1258 */ 1259 struct cfg80211_wowlan_trig_pkt_pattern { 1260 u8 *mask, *pattern; 1261 int pattern_len; 1262 }; 1263 1264 /** 1265 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1266 * 1267 * This structure defines the enabled WoWLAN triggers for the device. 1268 * @any: wake up on any activity -- special trigger if device continues 1269 * operating as normal during suspend 1270 * @disconnect: wake up if getting disconnected 1271 * @magic_pkt: wake up on receiving magic packet 1272 * @patterns: wake up on receiving packet matching a pattern 1273 * @n_patterns: number of patterns 1274 * @gtk_rekey_failure: wake up on GTK rekey failure 1275 * @eap_identity_req: wake up on EAP identity request packet 1276 * @four_way_handshake: wake up on 4-way handshake 1277 * @rfkill_release: wake up when rfkill is released 1278 */ 1279 struct cfg80211_wowlan { 1280 bool any, disconnect, magic_pkt, gtk_rekey_failure, 1281 eap_identity_req, four_way_handshake, 1282 rfkill_release; 1283 struct cfg80211_wowlan_trig_pkt_pattern *patterns; 1284 int n_patterns; 1285 }; 1286 1287 /** 1288 * struct cfg80211_gtk_rekey_data - rekey data 1289 * @kek: key encryption key 1290 * @kck: key confirmation key 1291 * @replay_ctr: replay counter 1292 */ 1293 struct cfg80211_gtk_rekey_data { 1294 u8 kek[NL80211_KEK_LEN]; 1295 u8 kck[NL80211_KCK_LEN]; 1296 u8 replay_ctr[NL80211_REPLAY_CTR_LEN]; 1297 }; 1298 1299 /** 1300 * struct cfg80211_ops - backend description for wireless configuration 1301 * 1302 * This struct is registered by fullmac card drivers and/or wireless stacks 1303 * in order to handle configuration requests on their interfaces. 1304 * 1305 * All callbacks except where otherwise noted should return 0 1306 * on success or a negative error code. 1307 * 1308 * All operations are currently invoked under rtnl for consistency with the 1309 * wireless extensions but this is subject to reevaluation as soon as this 1310 * code is used more widely and we have a first user without wext. 1311 * 1312 * @suspend: wiphy device needs to be suspended. The variable @wow will 1313 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 1314 * configured for the device. 1315 * @resume: wiphy device needs to be resumed 1316 * 1317 * @add_virtual_intf: create a new virtual interface with the given name, 1318 * must set the struct wireless_dev's iftype. Beware: You must create 1319 * the new netdev in the wiphy's network namespace! Returns the netdev, 1320 * or an ERR_PTR. 1321 * 1322 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1323 * 1324 * @change_virtual_intf: change type/configuration of virtual interface, 1325 * keep the struct wireless_dev's iftype updated. 1326 * 1327 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1328 * when adding a group key. 1329 * 1330 * @get_key: get information about the key with the given parameters. 1331 * @mac_addr will be %NULL when requesting information for a group 1332 * key. All pointers given to the @callback function need not be valid 1333 * after it returns. This function should return an error if it is 1334 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1335 * 1336 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1337 * and @key_index, return -ENOENT if the key doesn't exist. 1338 * 1339 * @set_default_key: set the default key on an interface 1340 * 1341 * @set_default_mgmt_key: set the default management frame key on an interface 1342 * 1343 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 1344 * 1345 * @add_beacon: Add a beacon with given parameters, @head, @interval 1346 * and @dtim_period will be valid, @tail is optional. 1347 * @set_beacon: Change the beacon parameters for an access point mode 1348 * interface. This should reject the call when no beacon has been 1349 * configured. 1350 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1351 * 1352 * @add_station: Add a new station. 1353 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1354 * @change_station: Modify a given station. Note that flags changes are not much 1355 * validated in cfg80211, in particular the auth/assoc/authorized flags 1356 * might come to the driver in invalid combinations -- make sure to check 1357 * them, also against the existing state! Also, supported_rates changes are 1358 * not checked in station mode -- drivers need to reject (or ignore) them 1359 * for anything but TDLS peers. 1360 * @get_station: get station information for the station identified by @mac 1361 * @dump_station: dump station callback -- resume dump at index @idx 1362 * 1363 * @add_mpath: add a fixed mesh path 1364 * @del_mpath: delete a given mesh path 1365 * @change_mpath: change a given mesh path 1366 * @get_mpath: get a mesh path for the given parameters 1367 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1368 * @join_mesh: join the mesh network with the specified parameters 1369 * @leave_mesh: leave the current mesh network 1370 * 1371 * @get_mesh_config: Get the current mesh configuration 1372 * 1373 * @update_mesh_config: Update mesh parameters on a running mesh. 1374 * The mask is a bitfield which tells us which parameters to 1375 * set, and which to leave alone. 1376 * 1377 * @change_bss: Modify parameters for a given BSS. 1378 * 1379 * @set_txq_params: Set TX queue parameters 1380 * 1381 * @set_channel: Set channel for a given wireless interface. Some devices 1382 * may support multi-channel operation (by channel hopping) so cfg80211 1383 * doesn't verify much. Note, however, that the passed netdev may be 1384 * %NULL as well if the user requested changing the channel for the 1385 * device itself, or for a monitor interface. 1386 * @get_channel: Get the current operating channel, should return %NULL if 1387 * there's no single defined operating channel if for example the 1388 * device implements channel hopping for multi-channel virtual interfaces. 1389 * 1390 * @scan: Request to do a scan. If returning zero, the scan request is given 1391 * the driver, and will be valid until passed to cfg80211_scan_done(). 1392 * For scan results, call cfg80211_inform_bss(); you can call this outside 1393 * the scan/scan_done bracket too. 1394 * 1395 * @auth: Request to authenticate with the specified peer 1396 * @assoc: Request to (re)associate with the specified peer 1397 * @deauth: Request to deauthenticate from the specified peer 1398 * @disassoc: Request to disassociate from the specified peer 1399 * 1400 * @connect: Connect to the ESS with the specified parameters. When connected, 1401 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1402 * If the connection fails for some reason, call cfg80211_connect_result() 1403 * with the status from the AP. 1404 * @disconnect: Disconnect from the BSS/ESS. 1405 * 1406 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1407 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1408 * to a merge. 1409 * @leave_ibss: Leave the IBSS. 1410 * 1411 * @set_wiphy_params: Notify that wiphy parameters have changed; 1412 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1413 * have changed. The actual parameter values are available in 1414 * struct wiphy. If returning an error, no value should be changed. 1415 * 1416 * @set_tx_power: set the transmit power according to the parameters, 1417 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). 1418 * @get_tx_power: store the current TX power into the dbm variable; 1419 * return 0 if successful 1420 * 1421 * @set_wds_peer: set the WDS peer for a WDS interface 1422 * 1423 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1424 * functions to adjust rfkill hw state 1425 * 1426 * @dump_survey: get site survey information. 1427 * 1428 * @remain_on_channel: Request the driver to remain awake on the specified 1429 * channel for the specified duration to complete an off-channel 1430 * operation (e.g., public action frame exchange). When the driver is 1431 * ready on the requested channel, it must indicate this with an event 1432 * notification by calling cfg80211_ready_on_channel(). 1433 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1434 * This allows the operation to be terminated prior to timeout based on 1435 * the duration value. 1436 * @mgmt_tx: Transmit a management frame. 1437 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1438 * frame on another channel 1439 * 1440 * @testmode_cmd: run a test mode command 1441 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 1442 * used by the function, but 0 and 1 must not be touched. Additionally, 1443 * return error codes other than -ENOBUFS and -ENOENT will terminate the 1444 * dump and return to userspace with an error, so be careful. If any data 1445 * was passed in from userspace then the data/len arguments will be present 1446 * and point to the data contained in %NL80211_ATTR_TESTDATA. 1447 * 1448 * @set_bitrate_mask: set the bitrate mask configuration 1449 * 1450 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1451 * devices running firmwares capable of generating the (re) association 1452 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1453 * @del_pmksa: Delete a cached PMKID. 1454 * @flush_pmksa: Flush all cached PMKIDs. 1455 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1456 * allows the driver to adjust the dynamic ps timeout value. 1457 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1458 * @sched_scan_start: Tell the driver to start a scheduled scan. 1459 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled 1460 * scan. The driver_initiated flag specifies whether the driver 1461 * itself has informed that the scan has stopped. 1462 * 1463 * @mgmt_frame_register: Notify driver that a management frame type was 1464 * registered. Note that this callback may not sleep, and cannot run 1465 * concurrently with itself. 1466 * 1467 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1468 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1469 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1470 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1471 * 1472 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1473 * 1474 * @set_ringparam: Set tx and rx ring sizes. 1475 * 1476 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1477 * 1478 * @tdls_mgmt: Transmit a TDLS management frame. 1479 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 1480 * 1481 * @probe_client: probe an associated client, must return a cookie that it 1482 * later passes to cfg80211_probe_status(). 1483 * 1484 * @set_noack_map: Set the NoAck Map for the TIDs. 1485 */ 1486 struct cfg80211_ops { 1487 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 1488 int (*resume)(struct wiphy *wiphy); 1489 1490 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1491 char *name, 1492 enum nl80211_iftype type, 1493 u32 *flags, 1494 struct vif_params *params); 1495 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1496 int (*change_virtual_intf)(struct wiphy *wiphy, 1497 struct net_device *dev, 1498 enum nl80211_iftype type, u32 *flags, 1499 struct vif_params *params); 1500 1501 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1502 u8 key_index, bool pairwise, const u8 *mac_addr, 1503 struct key_params *params); 1504 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1505 u8 key_index, bool pairwise, const u8 *mac_addr, 1506 void *cookie, 1507 void (*callback)(void *cookie, struct key_params*)); 1508 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1509 u8 key_index, bool pairwise, const u8 *mac_addr); 1510 int (*set_default_key)(struct wiphy *wiphy, 1511 struct net_device *netdev, 1512 u8 key_index, bool unicast, bool multicast); 1513 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1514 struct net_device *netdev, 1515 u8 key_index); 1516 1517 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1518 struct beacon_parameters *info); 1519 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1520 struct beacon_parameters *info); 1521 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1522 1523 1524 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1525 u8 *mac, struct station_parameters *params); 1526 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1527 u8 *mac); 1528 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1529 u8 *mac, struct station_parameters *params); 1530 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1531 u8 *mac, struct station_info *sinfo); 1532 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1533 int idx, u8 *mac, struct station_info *sinfo); 1534 1535 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1536 u8 *dst, u8 *next_hop); 1537 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1538 u8 *dst); 1539 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1540 u8 *dst, u8 *next_hop); 1541 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1542 u8 *dst, u8 *next_hop, 1543 struct mpath_info *pinfo); 1544 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1545 int idx, u8 *dst, u8 *next_hop, 1546 struct mpath_info *pinfo); 1547 int (*get_mesh_config)(struct wiphy *wiphy, 1548 struct net_device *dev, 1549 struct mesh_config *conf); 1550 int (*update_mesh_config)(struct wiphy *wiphy, 1551 struct net_device *dev, u32 mask, 1552 const struct mesh_config *nconf); 1553 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1554 const struct mesh_config *conf, 1555 const struct mesh_setup *setup); 1556 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1557 1558 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1559 struct bss_parameters *params); 1560 1561 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 1562 struct ieee80211_txq_params *params); 1563 1564 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1565 struct ieee80211_channel *chan, 1566 enum nl80211_channel_type channel_type); 1567 1568 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1569 struct cfg80211_scan_request *request); 1570 1571 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1572 struct cfg80211_auth_request *req); 1573 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1574 struct cfg80211_assoc_request *req); 1575 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1576 struct cfg80211_deauth_request *req, 1577 void *cookie); 1578 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1579 struct cfg80211_disassoc_request *req, 1580 void *cookie); 1581 1582 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1583 struct cfg80211_connect_params *sme); 1584 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1585 u16 reason_code); 1586 1587 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1588 struct cfg80211_ibss_params *params); 1589 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1590 1591 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1592 1593 int (*set_tx_power)(struct wiphy *wiphy, 1594 enum nl80211_tx_power_setting type, int mbm); 1595 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1596 1597 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1598 const u8 *addr); 1599 1600 void (*rfkill_poll)(struct wiphy *wiphy); 1601 1602 #ifdef CONFIG_NL80211_TESTMODE 1603 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1604 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 1605 struct netlink_callback *cb, 1606 void *data, int len); 1607 #endif 1608 1609 int (*set_bitrate_mask)(struct wiphy *wiphy, 1610 struct net_device *dev, 1611 const u8 *peer, 1612 const struct cfg80211_bitrate_mask *mask); 1613 1614 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1615 int idx, struct survey_info *info); 1616 1617 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1618 struct cfg80211_pmksa *pmksa); 1619 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1620 struct cfg80211_pmksa *pmksa); 1621 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1622 1623 int (*remain_on_channel)(struct wiphy *wiphy, 1624 struct net_device *dev, 1625 struct ieee80211_channel *chan, 1626 enum nl80211_channel_type channel_type, 1627 unsigned int duration, 1628 u64 *cookie); 1629 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1630 struct net_device *dev, 1631 u64 cookie); 1632 1633 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1634 struct ieee80211_channel *chan, bool offchan, 1635 enum nl80211_channel_type channel_type, 1636 bool channel_type_valid, unsigned int wait, 1637 const u8 *buf, size_t len, bool no_cck, 1638 bool dont_wait_for_ack, u64 *cookie); 1639 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1640 struct net_device *dev, 1641 u64 cookie); 1642 1643 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1644 bool enabled, int timeout); 1645 1646 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1647 struct net_device *dev, 1648 s32 rssi_thold, u32 rssi_hyst); 1649 1650 void (*mgmt_frame_register)(struct wiphy *wiphy, 1651 struct net_device *dev, 1652 u16 frame_type, bool reg); 1653 1654 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1655 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1656 1657 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 1658 void (*get_ringparam)(struct wiphy *wiphy, 1659 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1660 1661 int (*sched_scan_start)(struct wiphy *wiphy, 1662 struct net_device *dev, 1663 struct cfg80211_sched_scan_request *request); 1664 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 1665 1666 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 1667 struct cfg80211_gtk_rekey_data *data); 1668 1669 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1670 u8 *peer, u8 action_code, u8 dialog_token, 1671 u16 status_code, const u8 *buf, size_t len); 1672 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 1673 u8 *peer, enum nl80211_tdls_operation oper); 1674 1675 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 1676 const u8 *peer, u64 *cookie); 1677 1678 int (*set_noack_map)(struct wiphy *wiphy, 1679 struct net_device *dev, 1680 u16 noack_map); 1681 1682 struct ieee80211_channel *(*get_channel)(struct wiphy *wiphy); 1683 }; 1684 1685 /* 1686 * wireless hardware and networking interfaces structures 1687 * and registration/helper functions 1688 */ 1689 1690 /** 1691 * enum wiphy_flags - wiphy capability flags 1692 * 1693 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1694 * has its own custom regulatory domain and cannot identify the 1695 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1696 * we will disregard the first regulatory hint (when the 1697 * initiator is %REGDOM_SET_BY_CORE). 1698 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1699 * ignore regulatory domain settings until it gets its own regulatory 1700 * domain via its regulatory_hint() unless the regulatory hint is 1701 * from a country IE. After its gets its own regulatory domain it will 1702 * only allow further regulatory domain settings to further enhance 1703 * compliance. For example if channel 13 and 14 are disabled by this 1704 * regulatory domain no user regulatory domain can enable these channels 1705 * at a later time. This can be used for devices which do not have 1706 * calibration information guaranteed for frequencies or settings 1707 * outside of its regulatory domain. If used in combination with 1708 * WIPHY_FLAG_CUSTOM_REGULATORY the inspected country IE power settings 1709 * will be followed. 1710 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1711 * that passive scan flags and beaconing flags may not be lifted by 1712 * cfg80211 due to regulatory beacon hints. For more information on beacon 1713 * hints read the documenation for regulatory_hint_found_beacon() 1714 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1715 * wiphy at all 1716 * @WIPHY_FLAG_ENFORCE_COMBINATIONS: Set this flag to enforce interface 1717 * combinations for this device. This flag is used for backward 1718 * compatibility only until all drivers advertise combinations and 1719 * they will always be enforced. 1720 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1721 * by default -- this flag will be set depending on the kernel's default 1722 * on wiphy_new(), but can be changed by the driver if it has a good 1723 * reason to override the default 1724 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1725 * on a VLAN interface) 1726 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1727 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1728 * control port protocol ethertype. The device also honours the 1729 * control_port_no_encrypt flag. 1730 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1731 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 1732 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 1733 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 1734 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 1735 * firmware. 1736 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 1737 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 1738 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 1739 * link setup/discovery operations internally. Setup, discovery and 1740 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 1741 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 1742 * used for asking the driver/firmware to perform a TDLS operation. 1743 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 1744 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 1745 * when there are virtual interfaces in AP mode by calling 1746 * cfg80211_report_obss_beacon(). 1747 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 1748 * responds to probe-requests in hardware. 1749 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 1750 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 1751 */ 1752 enum wiphy_flags { 1753 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1754 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1755 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1756 WIPHY_FLAG_NETNS_OK = BIT(3), 1757 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1758 WIPHY_FLAG_4ADDR_AP = BIT(5), 1759 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1760 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1761 WIPHY_FLAG_IBSS_RSN = BIT(8), 1762 WIPHY_FLAG_MESH_AUTH = BIT(10), 1763 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 1764 WIPHY_FLAG_ENFORCE_COMBINATIONS = BIT(12), 1765 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 1766 WIPHY_FLAG_AP_UAPSD = BIT(14), 1767 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 1768 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 1769 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 1770 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 1771 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 1772 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 1773 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 1774 }; 1775 1776 /** 1777 * struct ieee80211_iface_limit - limit on certain interface types 1778 * @max: maximum number of interfaces of these types 1779 * @types: interface types (bits) 1780 */ 1781 struct ieee80211_iface_limit { 1782 u16 max; 1783 u16 types; 1784 }; 1785 1786 /** 1787 * struct ieee80211_iface_combination - possible interface combination 1788 * @limits: limits for the given interface types 1789 * @n_limits: number of limitations 1790 * @num_different_channels: can use up to this many different channels 1791 * @max_interfaces: maximum number of interfaces in total allowed in this 1792 * group 1793 * @beacon_int_infra_match: In this combination, the beacon intervals 1794 * between infrastructure and AP types must match. This is required 1795 * only in special cases. 1796 * 1797 * These examples can be expressed as follows: 1798 * 1799 * Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 1800 * 1801 * struct ieee80211_iface_limit limits1[] = { 1802 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1803 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 1804 * }; 1805 * struct ieee80211_iface_combination combination1 = { 1806 * .limits = limits1, 1807 * .n_limits = ARRAY_SIZE(limits1), 1808 * .max_interfaces = 2, 1809 * .beacon_int_infra_match = true, 1810 * }; 1811 * 1812 * 1813 * Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 1814 * 1815 * struct ieee80211_iface_limit limits2[] = { 1816 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 1817 * BIT(NL80211_IFTYPE_P2P_GO), }, 1818 * }; 1819 * struct ieee80211_iface_combination combination2 = { 1820 * .limits = limits2, 1821 * .n_limits = ARRAY_SIZE(limits2), 1822 * .max_interfaces = 8, 1823 * .num_different_channels = 1, 1824 * }; 1825 * 1826 * 1827 * Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 1828 * This allows for an infrastructure connection and three P2P connections. 1829 * 1830 * struct ieee80211_iface_limit limits3[] = { 1831 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1832 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 1833 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 1834 * }; 1835 * struct ieee80211_iface_combination combination3 = { 1836 * .limits = limits3, 1837 * .n_limits = ARRAY_SIZE(limits3), 1838 * .max_interfaces = 4, 1839 * .num_different_channels = 2, 1840 * }; 1841 */ 1842 struct ieee80211_iface_combination { 1843 const struct ieee80211_iface_limit *limits; 1844 u32 num_different_channels; 1845 u16 max_interfaces; 1846 u8 n_limits; 1847 bool beacon_int_infra_match; 1848 }; 1849 1850 struct mac_address { 1851 u8 addr[ETH_ALEN]; 1852 }; 1853 1854 struct ieee80211_txrx_stypes { 1855 u16 tx, rx; 1856 }; 1857 1858 /** 1859 * enum wiphy_wowlan_support_flags - WoWLAN support flags 1860 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 1861 * trigger that keeps the device operating as-is and 1862 * wakes up the host on any activity, for example a 1863 * received packet that passed filtering; note that the 1864 * packet should be preserved in that case 1865 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 1866 * (see nl80211.h) 1867 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 1868 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 1869 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 1870 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 1871 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 1872 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 1873 */ 1874 enum wiphy_wowlan_support_flags { 1875 WIPHY_WOWLAN_ANY = BIT(0), 1876 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 1877 WIPHY_WOWLAN_DISCONNECT = BIT(2), 1878 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 1879 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 1880 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 1881 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 1882 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 1883 }; 1884 1885 /** 1886 * struct wiphy_wowlan_support - WoWLAN support data 1887 * @flags: see &enum wiphy_wowlan_support_flags 1888 * @n_patterns: number of supported wakeup patterns 1889 * (see nl80211.h for the pattern definition) 1890 * @pattern_max_len: maximum length of each pattern 1891 * @pattern_min_len: minimum length of each pattern 1892 */ 1893 struct wiphy_wowlan_support { 1894 u32 flags; 1895 int n_patterns; 1896 int pattern_max_len; 1897 int pattern_min_len; 1898 }; 1899 1900 /** 1901 * struct wiphy - wireless hardware description 1902 * @reg_notifier: the driver's regulatory notification callback, 1903 * note that if your driver uses wiphy_apply_custom_regulatory() 1904 * the reg_notifier's request can be passed as NULL 1905 * @regd: the driver's regulatory domain, if one was requested via 1906 * the regulatory_hint() API. This can be used by the driver 1907 * on the reg_notifier() if it chooses to ignore future 1908 * regulatory domain changes caused by other drivers. 1909 * @signal_type: signal type reported in &struct cfg80211_bss. 1910 * @cipher_suites: supported cipher suites 1911 * @n_cipher_suites: number of supported cipher suites 1912 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1913 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1914 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1915 * -1 = fragmentation disabled, only odd values >= 256 used 1916 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1917 * @_net: the network namespace this wiphy currently lives in 1918 * @perm_addr: permanent MAC address of this device 1919 * @addr_mask: If the device supports multiple MAC addresses by masking, 1920 * set this to a mask with variable bits set to 1, e.g. if the last 1921 * four bits are variable then set it to 00:...:00:0f. The actual 1922 * variable bits shall be determined by the interfaces added, with 1923 * interfaces not matching the mask being rejected to be brought up. 1924 * @n_addresses: number of addresses in @addresses. 1925 * @addresses: If the device has more than one address, set this pointer 1926 * to a list of addresses (6 bytes each). The first one will be used 1927 * by default for perm_addr. In this case, the mask should be set to 1928 * all-zeroes. In this case it is assumed that the device can handle 1929 * the same number of arbitrary MAC addresses. 1930 * @registered: protects ->resume and ->suspend sysfs callbacks against 1931 * unregister hardware 1932 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1933 * automatically on wiphy renames 1934 * @dev: (virtual) struct device for this wiphy 1935 * @registered: helps synchronize suspend/resume with wiphy unregister 1936 * @wext: wireless extension handlers 1937 * @priv: driver private data (sized according to wiphy_new() parameter) 1938 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1939 * must be set by driver 1940 * @iface_combinations: Valid interface combinations array, should not 1941 * list single interface types. 1942 * @n_iface_combinations: number of entries in @iface_combinations array. 1943 * @software_iftypes: bitmask of software interface types, these are not 1944 * subject to any restrictions since they are purely managed in SW. 1945 * @flags: wiphy flags, see &enum wiphy_flags 1946 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 1947 * @bss_priv_size: each BSS struct has private data allocated with it, 1948 * this variable determines its size 1949 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1950 * any given scan 1951 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 1952 * for in any given scheduled scan 1953 * @max_match_sets: maximum number of match sets the device can handle 1954 * when performing a scheduled scan, 0 if filtering is not 1955 * supported. 1956 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1957 * add to probe request frames transmitted during a scan, must not 1958 * include fixed IEs like supported rates 1959 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 1960 * scans 1961 * @coverage_class: current coverage class 1962 * @fw_version: firmware version for ethtool reporting 1963 * @hw_version: hardware version for ethtool reporting 1964 * @max_num_pmkids: maximum number of PMKIDs supported by device 1965 * @privid: a pointer that drivers can use to identify if an arbitrary 1966 * wiphy is theirs, e.g. in global notifiers 1967 * @bands: information about bands/channels supported by this device 1968 * 1969 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1970 * transmitted through nl80211, points to an array indexed by interface 1971 * type 1972 * 1973 * @available_antennas_tx: bitmap of antennas which are available to be 1974 * configured as TX antennas. Antenna configuration commands will be 1975 * rejected unless this or @available_antennas_rx is set. 1976 * 1977 * @available_antennas_rx: bitmap of antennas which are available to be 1978 * configured as RX antennas. Antenna configuration commands will be 1979 * rejected unless this or @available_antennas_tx is set. 1980 * 1981 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 1982 * may request, if implemented. 1983 * 1984 * @wowlan: WoWLAN support information 1985 * 1986 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 1987 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 1988 * If null, then none can be over-ridden. 1989 */ 1990 struct wiphy { 1991 /* assign these fields before you register the wiphy */ 1992 1993 /* permanent MAC address(es) */ 1994 u8 perm_addr[ETH_ALEN]; 1995 u8 addr_mask[ETH_ALEN]; 1996 1997 struct mac_address *addresses; 1998 1999 const struct ieee80211_txrx_stypes *mgmt_stypes; 2000 2001 const struct ieee80211_iface_combination *iface_combinations; 2002 int n_iface_combinations; 2003 u16 software_iftypes; 2004 2005 u16 n_addresses; 2006 2007 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 2008 u16 interface_modes; 2009 2010 u32 flags, features; 2011 2012 u32 ap_sme_capa; 2013 2014 enum cfg80211_signal_type signal_type; 2015 2016 int bss_priv_size; 2017 u8 max_scan_ssids; 2018 u8 max_sched_scan_ssids; 2019 u8 max_match_sets; 2020 u16 max_scan_ie_len; 2021 u16 max_sched_scan_ie_len; 2022 2023 int n_cipher_suites; 2024 const u32 *cipher_suites; 2025 2026 u8 retry_short; 2027 u8 retry_long; 2028 u32 frag_threshold; 2029 u32 rts_threshold; 2030 u8 coverage_class; 2031 2032 char fw_version[ETHTOOL_BUSINFO_LEN]; 2033 u32 hw_version; 2034 2035 struct wiphy_wowlan_support wowlan; 2036 2037 u16 max_remain_on_channel_duration; 2038 2039 u8 max_num_pmkids; 2040 2041 u32 available_antennas_tx; 2042 u32 available_antennas_rx; 2043 2044 /* 2045 * Bitmap of supported protocols for probe response offloading 2046 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 2047 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 2048 */ 2049 u32 probe_resp_offload; 2050 2051 /* If multiple wiphys are registered and you're handed e.g. 2052 * a regular netdev with assigned ieee80211_ptr, you won't 2053 * know whether it points to a wiphy your driver has registered 2054 * or not. Assign this to something global to your driver to 2055 * help determine whether you own this wiphy or not. */ 2056 const void *privid; 2057 2058 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 2059 2060 /* Lets us get back the wiphy on the callback */ 2061 int (*reg_notifier)(struct wiphy *wiphy, 2062 struct regulatory_request *request); 2063 2064 /* fields below are read-only, assigned by cfg80211 */ 2065 2066 const struct ieee80211_regdomain *regd; 2067 2068 /* the item in /sys/class/ieee80211/ points to this, 2069 * you need use set_wiphy_dev() (see below) */ 2070 struct device dev; 2071 2072 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 2073 bool registered; 2074 2075 /* dir in debugfs: ieee80211/<wiphyname> */ 2076 struct dentry *debugfsdir; 2077 2078 const struct ieee80211_ht_cap *ht_capa_mod_mask; 2079 2080 #ifdef CONFIG_NET_NS 2081 /* the network namespace this phy lives in currently */ 2082 struct net *_net; 2083 #endif 2084 2085 #ifdef CONFIG_CFG80211_WEXT 2086 const struct iw_handler_def *wext; 2087 #endif 2088 2089 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 2090 }; 2091 2092 static inline struct net *wiphy_net(struct wiphy *wiphy) 2093 { 2094 return read_pnet(&wiphy->_net); 2095 } 2096 2097 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 2098 { 2099 write_pnet(&wiphy->_net, net); 2100 } 2101 2102 /** 2103 * wiphy_priv - return priv from wiphy 2104 * 2105 * @wiphy: the wiphy whose priv pointer to return 2106 */ 2107 static inline void *wiphy_priv(struct wiphy *wiphy) 2108 { 2109 BUG_ON(!wiphy); 2110 return &wiphy->priv; 2111 } 2112 2113 /** 2114 * priv_to_wiphy - return the wiphy containing the priv 2115 * 2116 * @priv: a pointer previously returned by wiphy_priv 2117 */ 2118 static inline struct wiphy *priv_to_wiphy(void *priv) 2119 { 2120 BUG_ON(!priv); 2121 return container_of(priv, struct wiphy, priv); 2122 } 2123 2124 /** 2125 * set_wiphy_dev - set device pointer for wiphy 2126 * 2127 * @wiphy: The wiphy whose device to bind 2128 * @dev: The device to parent it to 2129 */ 2130 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 2131 { 2132 wiphy->dev.parent = dev; 2133 } 2134 2135 /** 2136 * wiphy_dev - get wiphy dev pointer 2137 * 2138 * @wiphy: The wiphy whose device struct to look up 2139 */ 2140 static inline struct device *wiphy_dev(struct wiphy *wiphy) 2141 { 2142 return wiphy->dev.parent; 2143 } 2144 2145 /** 2146 * wiphy_name - get wiphy name 2147 * 2148 * @wiphy: The wiphy whose name to return 2149 */ 2150 static inline const char *wiphy_name(const struct wiphy *wiphy) 2151 { 2152 return dev_name(&wiphy->dev); 2153 } 2154 2155 /** 2156 * wiphy_new - create a new wiphy for use with cfg80211 2157 * 2158 * @ops: The configuration operations for this device 2159 * @sizeof_priv: The size of the private area to allocate 2160 * 2161 * Create a new wiphy and associate the given operations with it. 2162 * @sizeof_priv bytes are allocated for private use. 2163 * 2164 * The returned pointer must be assigned to each netdev's 2165 * ieee80211_ptr for proper operation. 2166 */ 2167 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 2168 2169 /** 2170 * wiphy_register - register a wiphy with cfg80211 2171 * 2172 * @wiphy: The wiphy to register. 2173 * 2174 * Returns a non-negative wiphy index or a negative error code. 2175 */ 2176 extern int wiphy_register(struct wiphy *wiphy); 2177 2178 /** 2179 * wiphy_unregister - deregister a wiphy from cfg80211 2180 * 2181 * @wiphy: The wiphy to unregister. 2182 * 2183 * After this call, no more requests can be made with this priv 2184 * pointer, but the call may sleep to wait for an outstanding 2185 * request that is being handled. 2186 */ 2187 extern void wiphy_unregister(struct wiphy *wiphy); 2188 2189 /** 2190 * wiphy_free - free wiphy 2191 * 2192 * @wiphy: The wiphy to free 2193 */ 2194 extern void wiphy_free(struct wiphy *wiphy); 2195 2196 /* internal structs */ 2197 struct cfg80211_conn; 2198 struct cfg80211_internal_bss; 2199 struct cfg80211_cached_keys; 2200 2201 #define MAX_AUTH_BSSES 4 2202 2203 /** 2204 * struct wireless_dev - wireless per-netdev state 2205 * 2206 * This structure must be allocated by the driver/stack 2207 * that uses the ieee80211_ptr field in struct net_device 2208 * (this is intentional so it can be allocated along with 2209 * the netdev.) 2210 * 2211 * @wiphy: pointer to hardware description 2212 * @iftype: interface type 2213 * @list: (private) Used to collect the interfaces 2214 * @netdev: (private) Used to reference back to the netdev 2215 * @current_bss: (private) Used by the internal configuration code 2216 * @channel: (private) Used by the internal configuration code to track 2217 * user-set AP, monitor and WDS channels for wireless extensions 2218 * @bssid: (private) Used by the internal configuration code 2219 * @ssid: (private) Used by the internal configuration code 2220 * @ssid_len: (private) Used by the internal configuration code 2221 * @mesh_id_len: (private) Used by the internal configuration code 2222 * @mesh_id_up_len: (private) Used by the internal configuration code 2223 * @wext: (private) Used by the internal wireless extensions compat code 2224 * @use_4addr: indicates 4addr mode is used on this interface, must be 2225 * set by driver (if supported) on add_interface BEFORE registering the 2226 * netdev and may otherwise be used by driver read-only, will be update 2227 * by cfg80211 on change_interface 2228 * @mgmt_registrations: list of registrations for management frames 2229 * @mgmt_registrations_lock: lock for the list 2230 * @mtx: mutex used to lock data in this struct 2231 * @cleanup_work: work struct used for cleanup that can't be done directly 2232 * @beacon_interval: beacon interval used on this device for transmitting 2233 * beacons, 0 when not valid 2234 */ 2235 struct wireless_dev { 2236 struct wiphy *wiphy; 2237 enum nl80211_iftype iftype; 2238 2239 /* the remainder of this struct should be private to cfg80211 */ 2240 struct list_head list; 2241 struct net_device *netdev; 2242 2243 struct list_head mgmt_registrations; 2244 spinlock_t mgmt_registrations_lock; 2245 2246 struct mutex mtx; 2247 2248 struct work_struct cleanup_work; 2249 2250 bool use_4addr; 2251 2252 /* currently used for IBSS and SME - might be rearranged later */ 2253 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2254 u8 ssid_len, mesh_id_len, mesh_id_up_len; 2255 enum { 2256 CFG80211_SME_IDLE, 2257 CFG80211_SME_CONNECTING, 2258 CFG80211_SME_CONNECTED, 2259 } sme_state; 2260 struct cfg80211_conn *conn; 2261 struct cfg80211_cached_keys *connect_keys; 2262 2263 struct list_head event_list; 2264 spinlock_t event_lock; 2265 2266 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 2267 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 2268 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 2269 struct ieee80211_channel *channel; 2270 2271 bool ps; 2272 int ps_timeout; 2273 2274 int beacon_interval; 2275 2276 u32 ap_unexpected_nlpid; 2277 2278 #ifdef CONFIG_CFG80211_WEXT 2279 /* wext data */ 2280 struct { 2281 struct cfg80211_ibss_params ibss; 2282 struct cfg80211_connect_params connect; 2283 struct cfg80211_cached_keys *keys; 2284 u8 *ie; 2285 size_t ie_len; 2286 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 2287 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2288 s8 default_key, default_mgmt_key; 2289 bool prev_bssid_valid; 2290 } wext; 2291 #endif 2292 }; 2293 2294 /** 2295 * wdev_priv - return wiphy priv from wireless_dev 2296 * 2297 * @wdev: The wireless device whose wiphy's priv pointer to return 2298 */ 2299 static inline void *wdev_priv(struct wireless_dev *wdev) 2300 { 2301 BUG_ON(!wdev); 2302 return wiphy_priv(wdev->wiphy); 2303 } 2304 2305 /** 2306 * DOC: Utility functions 2307 * 2308 * cfg80211 offers a number of utility functions that can be useful. 2309 */ 2310 2311 /** 2312 * ieee80211_channel_to_frequency - convert channel number to frequency 2313 * @chan: channel number 2314 * @band: band, necessary due to channel number overlap 2315 */ 2316 extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 2317 2318 /** 2319 * ieee80211_frequency_to_channel - convert frequency to channel number 2320 * @freq: center frequency 2321 */ 2322 extern int ieee80211_frequency_to_channel(int freq); 2323 2324 /* 2325 * Name indirection necessary because the ieee80211 code also has 2326 * a function named "ieee80211_get_channel", so if you include 2327 * cfg80211's header file you get cfg80211's version, if you try 2328 * to include both header files you'll (rightfully!) get a symbol 2329 * clash. 2330 */ 2331 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 2332 int freq); 2333 /** 2334 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 2335 * @wiphy: the struct wiphy to get the channel for 2336 * @freq: the center frequency of the channel 2337 */ 2338 static inline struct ieee80211_channel * 2339 ieee80211_get_channel(struct wiphy *wiphy, int freq) 2340 { 2341 return __ieee80211_get_channel(wiphy, freq); 2342 } 2343 2344 /** 2345 * ieee80211_get_response_rate - get basic rate for a given rate 2346 * 2347 * @sband: the band to look for rates in 2348 * @basic_rates: bitmap of basic rates 2349 * @bitrate: the bitrate for which to find the basic rate 2350 * 2351 * This function returns the basic rate corresponding to a given 2352 * bitrate, that is the next lower bitrate contained in the basic 2353 * rate map, which is, for this function, given as a bitmap of 2354 * indices of rates in the band's bitrate table. 2355 */ 2356 struct ieee80211_rate * 2357 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 2358 u32 basic_rates, int bitrate); 2359 2360 /* 2361 * Radiotap parsing functions -- for controlled injection support 2362 * 2363 * Implemented in net/wireless/radiotap.c 2364 * Documentation in Documentation/networking/radiotap-headers.txt 2365 */ 2366 2367 struct radiotap_align_size { 2368 uint8_t align:4, size:4; 2369 }; 2370 2371 struct ieee80211_radiotap_namespace { 2372 const struct radiotap_align_size *align_size; 2373 int n_bits; 2374 uint32_t oui; 2375 uint8_t subns; 2376 }; 2377 2378 struct ieee80211_radiotap_vendor_namespaces { 2379 const struct ieee80211_radiotap_namespace *ns; 2380 int n_ns; 2381 }; 2382 2383 /** 2384 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 2385 * @this_arg_index: index of current arg, valid after each successful call 2386 * to ieee80211_radiotap_iterator_next() 2387 * @this_arg: pointer to current radiotap arg; it is valid after each 2388 * call to ieee80211_radiotap_iterator_next() but also after 2389 * ieee80211_radiotap_iterator_init() where it will point to 2390 * the beginning of the actual data portion 2391 * @this_arg_size: length of the current arg, for convenience 2392 * @current_namespace: pointer to the current namespace definition 2393 * (or internally %NULL if the current namespace is unknown) 2394 * @is_radiotap_ns: indicates whether the current namespace is the default 2395 * radiotap namespace or not 2396 * 2397 * @_rtheader: pointer to the radiotap header we are walking through 2398 * @_max_length: length of radiotap header in cpu byte ordering 2399 * @_arg_index: next argument index 2400 * @_arg: next argument pointer 2401 * @_next_bitmap: internal pointer to next present u32 2402 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 2403 * @_vns: vendor namespace definitions 2404 * @_next_ns_data: beginning of the next namespace's data 2405 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 2406 * next bitmap word 2407 * 2408 * Describes the radiotap parser state. Fields prefixed with an underscore 2409 * must not be used by users of the parser, only by the parser internally. 2410 */ 2411 2412 struct ieee80211_radiotap_iterator { 2413 struct ieee80211_radiotap_header *_rtheader; 2414 const struct ieee80211_radiotap_vendor_namespaces *_vns; 2415 const struct ieee80211_radiotap_namespace *current_namespace; 2416 2417 unsigned char *_arg, *_next_ns_data; 2418 __le32 *_next_bitmap; 2419 2420 unsigned char *this_arg; 2421 int this_arg_index; 2422 int this_arg_size; 2423 2424 int is_radiotap_ns; 2425 2426 int _max_length; 2427 int _arg_index; 2428 uint32_t _bitmap_shifter; 2429 int _reset_on_ext; 2430 }; 2431 2432 extern int ieee80211_radiotap_iterator_init( 2433 struct ieee80211_radiotap_iterator *iterator, 2434 struct ieee80211_radiotap_header *radiotap_header, 2435 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 2436 2437 extern int ieee80211_radiotap_iterator_next( 2438 struct ieee80211_radiotap_iterator *iterator); 2439 2440 2441 extern const unsigned char rfc1042_header[6]; 2442 extern const unsigned char bridge_tunnel_header[6]; 2443 2444 /** 2445 * ieee80211_get_hdrlen_from_skb - get header length from data 2446 * 2447 * Given an skb with a raw 802.11 header at the data pointer this function 2448 * returns the 802.11 header length in bytes (not including encryption 2449 * headers). If the data in the sk_buff is too short to contain a valid 802.11 2450 * header the function returns 0. 2451 * 2452 * @skb: the frame 2453 */ 2454 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 2455 2456 /** 2457 * ieee80211_hdrlen - get header length in bytes from frame control 2458 * @fc: frame control field in little-endian format 2459 */ 2460 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 2461 2462 /** 2463 * DOC: Data path helpers 2464 * 2465 * In addition to generic utilities, cfg80211 also offers 2466 * functions that help implement the data path for devices 2467 * that do not do the 802.11/802.3 conversion on the device. 2468 */ 2469 2470 /** 2471 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 2472 * @skb: the 802.11 data frame 2473 * @addr: the device MAC address 2474 * @iftype: the virtual interface type 2475 */ 2476 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 2477 enum nl80211_iftype iftype); 2478 2479 /** 2480 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 2481 * @skb: the 802.3 frame 2482 * @addr: the device MAC address 2483 * @iftype: the virtual interface type 2484 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 2485 * @qos: build 802.11 QoS data frame 2486 */ 2487 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 2488 enum nl80211_iftype iftype, u8 *bssid, bool qos); 2489 2490 /** 2491 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 2492 * 2493 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 2494 * 802.3 frames. The @list will be empty if the decode fails. The 2495 * @skb is consumed after the function returns. 2496 * 2497 * @skb: The input IEEE 802.11n A-MSDU frame. 2498 * @list: The output list of 802.3 frames. It must be allocated and 2499 * initialized by by the caller. 2500 * @addr: The device MAC address. 2501 * @iftype: The device interface type. 2502 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 2503 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 2504 */ 2505 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 2506 const u8 *addr, enum nl80211_iftype iftype, 2507 const unsigned int extra_headroom, 2508 bool has_80211_header); 2509 2510 /** 2511 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 2512 * @skb: the data frame 2513 */ 2514 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 2515 2516 /** 2517 * cfg80211_find_ie - find information element in data 2518 * 2519 * @eid: element ID 2520 * @ies: data consisting of IEs 2521 * @len: length of data 2522 * 2523 * This function will return %NULL if the element ID could 2524 * not be found or if the element is invalid (claims to be 2525 * longer than the given data), or a pointer to the first byte 2526 * of the requested element, that is the byte containing the 2527 * element ID. There are no checks on the element length 2528 * other than having to fit into the given data. 2529 */ 2530 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2531 2532 /** 2533 * cfg80211_find_vendor_ie - find vendor specific information element in data 2534 * 2535 * @oui: vendor OUI 2536 * @oui_type: vendor-specific OUI type 2537 * @ies: data consisting of IEs 2538 * @len: length of data 2539 * 2540 * This function will return %NULL if the vendor specific element ID 2541 * could not be found or if the element is invalid (claims to be 2542 * longer than the given data), or a pointer to the first byte 2543 * of the requested element, that is the byte containing the 2544 * element ID. There are no checks on the element length 2545 * other than having to fit into the given data. 2546 */ 2547 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 2548 const u8 *ies, int len); 2549 2550 /** 2551 * DOC: Regulatory enforcement infrastructure 2552 * 2553 * TODO 2554 */ 2555 2556 /** 2557 * regulatory_hint - driver hint to the wireless core a regulatory domain 2558 * @wiphy: the wireless device giving the hint (used only for reporting 2559 * conflicts) 2560 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2561 * should be in. If @rd is set this should be NULL. Note that if you 2562 * set this to NULL you should still set rd->alpha2 to some accepted 2563 * alpha2. 2564 * 2565 * Wireless drivers can use this function to hint to the wireless core 2566 * what it believes should be the current regulatory domain by 2567 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2568 * domain should be in or by providing a completely build regulatory domain. 2569 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2570 * for a regulatory domain structure for the respective country. 2571 * 2572 * The wiphy must have been registered to cfg80211 prior to this call. 2573 * For cfg80211 drivers this means you must first use wiphy_register(), 2574 * for mac80211 drivers you must first use ieee80211_register_hw(). 2575 * 2576 * Drivers should check the return value, its possible you can get 2577 * an -ENOMEM. 2578 */ 2579 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2580 2581 /** 2582 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2583 * @wiphy: the wireless device we want to process the regulatory domain on 2584 * @regd: the custom regulatory domain to use for this wiphy 2585 * 2586 * Drivers can sometimes have custom regulatory domains which do not apply 2587 * to a specific country. Drivers can use this to apply such custom regulatory 2588 * domains. This routine must be called prior to wiphy registration. The 2589 * custom regulatory domain will be trusted completely and as such previous 2590 * default channel settings will be disregarded. If no rule is found for a 2591 * channel on the regulatory domain the channel will be disabled. 2592 */ 2593 extern void wiphy_apply_custom_regulatory( 2594 struct wiphy *wiphy, 2595 const struct ieee80211_regdomain *regd); 2596 2597 /** 2598 * freq_reg_info - get regulatory information for the given frequency 2599 * @wiphy: the wiphy for which we want to process this rule for 2600 * @center_freq: Frequency in KHz for which we want regulatory information for 2601 * @desired_bw_khz: the desired max bandwidth you want to use per 2602 * channel. Note that this is still 20 MHz if you want to use HT40 2603 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2604 * If set to 0 we'll assume you want the standard 20 MHz. 2605 * @reg_rule: the regulatory rule which we have for this frequency 2606 * 2607 * Use this function to get the regulatory rule for a specific frequency on 2608 * a given wireless device. If the device has a specific regulatory domain 2609 * it wants to follow we respect that unless a country IE has been received 2610 * and processed already. 2611 * 2612 * Returns 0 if it was able to find a valid regulatory rule which does 2613 * apply to the given center_freq otherwise it returns non-zero. It will 2614 * also return -ERANGE if we determine the given center_freq does not even have 2615 * a regulatory rule for a frequency range in the center_freq's band. See 2616 * freq_in_rule_band() for our current definition of a band -- this is purely 2617 * subjective and right now its 802.11 specific. 2618 */ 2619 extern int freq_reg_info(struct wiphy *wiphy, 2620 u32 center_freq, 2621 u32 desired_bw_khz, 2622 const struct ieee80211_reg_rule **reg_rule); 2623 2624 /* 2625 * callbacks for asynchronous cfg80211 methods, notification 2626 * functions and BSS handling helpers 2627 */ 2628 2629 /** 2630 * cfg80211_scan_done - notify that scan finished 2631 * 2632 * @request: the corresponding scan request 2633 * @aborted: set to true if the scan was aborted for any reason, 2634 * userspace will be notified of that 2635 */ 2636 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2637 2638 /** 2639 * cfg80211_sched_scan_results - notify that new scan results are available 2640 * 2641 * @wiphy: the wiphy which got scheduled scan results 2642 */ 2643 void cfg80211_sched_scan_results(struct wiphy *wiphy); 2644 2645 /** 2646 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 2647 * 2648 * @wiphy: the wiphy on which the scheduled scan stopped 2649 * 2650 * The driver can call this function to inform cfg80211 that the 2651 * scheduled scan had to be stopped, for whatever reason. The driver 2652 * is then called back via the sched_scan_stop operation when done. 2653 */ 2654 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 2655 2656 /** 2657 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2658 * 2659 * @wiphy: the wiphy reporting the BSS 2660 * @channel: The channel the frame was received on 2661 * @mgmt: the management frame (probe response or beacon) 2662 * @len: length of the management frame 2663 * @signal: the signal strength, type depends on the wiphy's signal_type 2664 * @gfp: context flags 2665 * 2666 * This informs cfg80211 that BSS information was found and 2667 * the BSS should be updated/added. 2668 * 2669 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2670 */ 2671 struct cfg80211_bss * __must_check 2672 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2673 struct ieee80211_channel *channel, 2674 struct ieee80211_mgmt *mgmt, size_t len, 2675 s32 signal, gfp_t gfp); 2676 2677 /** 2678 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2679 * 2680 * @wiphy: the wiphy reporting the BSS 2681 * @channel: The channel the frame was received on 2682 * @bssid: the BSSID of the BSS 2683 * @timestamp: the TSF timestamp sent by the peer 2684 * @capability: the capability field sent by the peer 2685 * @beacon_interval: the beacon interval announced by the peer 2686 * @ie: additional IEs sent by the peer 2687 * @ielen: length of the additional IEs 2688 * @signal: the signal strength, type depends on the wiphy's signal_type 2689 * @gfp: context flags 2690 * 2691 * This informs cfg80211 that BSS information was found and 2692 * the BSS should be updated/added. 2693 * 2694 * NOTE: Returns a referenced struct, must be released with cfg80211_put_bss()! 2695 */ 2696 struct cfg80211_bss * __must_check 2697 cfg80211_inform_bss(struct wiphy *wiphy, 2698 struct ieee80211_channel *channel, 2699 const u8 *bssid, 2700 u64 timestamp, u16 capability, u16 beacon_interval, 2701 const u8 *ie, size_t ielen, 2702 s32 signal, gfp_t gfp); 2703 2704 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2705 struct ieee80211_channel *channel, 2706 const u8 *bssid, 2707 const u8 *ssid, size_t ssid_len, 2708 u16 capa_mask, u16 capa_val); 2709 static inline struct cfg80211_bss * 2710 cfg80211_get_ibss(struct wiphy *wiphy, 2711 struct ieee80211_channel *channel, 2712 const u8 *ssid, size_t ssid_len) 2713 { 2714 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2715 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2716 } 2717 2718 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2719 struct ieee80211_channel *channel, 2720 const u8 *meshid, size_t meshidlen, 2721 const u8 *meshcfg); 2722 void cfg80211_put_bss(struct cfg80211_bss *bss); 2723 2724 /** 2725 * cfg80211_unlink_bss - unlink BSS from internal data structures 2726 * @wiphy: the wiphy 2727 * @bss: the bss to remove 2728 * 2729 * This function removes the given BSS from the internal data structures 2730 * thereby making it no longer show up in scan results etc. Use this 2731 * function when you detect a BSS is gone. Normally BSSes will also time 2732 * out, so it is not necessary to use this function at all. 2733 */ 2734 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2735 2736 /** 2737 * cfg80211_send_rx_auth - notification of processed authentication 2738 * @dev: network device 2739 * @buf: authentication frame (header + body) 2740 * @len: length of the frame data 2741 * 2742 * This function is called whenever an authentication has been processed in 2743 * station mode. The driver is required to call either this function or 2744 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2745 * call. This function may sleep. 2746 */ 2747 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2748 2749 /** 2750 * cfg80211_send_auth_timeout - notification of timed out authentication 2751 * @dev: network device 2752 * @addr: The MAC address of the device with which the authentication timed out 2753 * 2754 * This function may sleep. 2755 */ 2756 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2757 2758 /** 2759 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2760 * @dev: network device 2761 * @addr: The MAC address of the device with which the authentication timed out 2762 * 2763 * When a pending authentication had no action yet, the driver may decide 2764 * to not send a deauth frame, but in that case must calls this function 2765 * to tell cfg80211 about this decision. It is only valid to call this 2766 * function within the deauth() callback. 2767 */ 2768 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2769 2770 /** 2771 * cfg80211_send_rx_assoc - notification of processed association 2772 * @dev: network device 2773 * @buf: (re)association response frame (header + body) 2774 * @len: length of the frame data 2775 * 2776 * This function is called whenever a (re)association response has been 2777 * processed in station mode. The driver is required to call either this 2778 * function or cfg80211_send_assoc_timeout() to indicate the result of 2779 * cfg80211_ops::assoc() call. This function may sleep. 2780 */ 2781 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2782 2783 /** 2784 * cfg80211_send_assoc_timeout - notification of timed out association 2785 * @dev: network device 2786 * @addr: The MAC address of the device with which the association timed out 2787 * 2788 * This function may sleep. 2789 */ 2790 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2791 2792 /** 2793 * cfg80211_send_deauth - notification of processed deauthentication 2794 * @dev: network device 2795 * @buf: deauthentication frame (header + body) 2796 * @len: length of the frame data 2797 * 2798 * This function is called whenever deauthentication has been processed in 2799 * station mode. This includes both received deauthentication frames and 2800 * locally generated ones. This function may sleep. 2801 */ 2802 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2803 2804 /** 2805 * __cfg80211_send_deauth - notification of processed deauthentication 2806 * @dev: network device 2807 * @buf: deauthentication frame (header + body) 2808 * @len: length of the frame data 2809 * 2810 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2811 */ 2812 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2813 2814 /** 2815 * cfg80211_send_disassoc - notification of processed disassociation 2816 * @dev: network device 2817 * @buf: disassociation response frame (header + body) 2818 * @len: length of the frame data 2819 * 2820 * This function is called whenever disassociation has been processed in 2821 * station mode. This includes both received disassociation frames and locally 2822 * generated ones. This function may sleep. 2823 */ 2824 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2825 2826 /** 2827 * __cfg80211_send_disassoc - notification of processed disassociation 2828 * @dev: network device 2829 * @buf: disassociation response frame (header + body) 2830 * @len: length of the frame data 2831 * 2832 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2833 */ 2834 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2835 size_t len); 2836 2837 /** 2838 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2839 * @dev: network device 2840 * @buf: deauthentication frame (header + body) 2841 * @len: length of the frame data 2842 * 2843 * This function is called whenever a received Deauthentication frame has been 2844 * dropped in station mode because of MFP being used but the Deauthentication 2845 * frame was not protected. This function may sleep. 2846 */ 2847 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2848 size_t len); 2849 2850 /** 2851 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2852 * @dev: network device 2853 * @buf: disassociation frame (header + body) 2854 * @len: length of the frame data 2855 * 2856 * This function is called whenever a received Disassociation frame has been 2857 * dropped in station mode because of MFP being used but the Disassociation 2858 * frame was not protected. This function may sleep. 2859 */ 2860 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2861 size_t len); 2862 2863 /** 2864 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2865 * @dev: network device 2866 * @addr: The source MAC address of the frame 2867 * @key_type: The key type that the received frame used 2868 * @key_id: Key identifier (0..3). Can be -1 if missing. 2869 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2870 * @gfp: allocation flags 2871 * 2872 * This function is called whenever the local MAC detects a MIC failure in a 2873 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2874 * primitive. 2875 */ 2876 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2877 enum nl80211_key_type key_type, int key_id, 2878 const u8 *tsc, gfp_t gfp); 2879 2880 /** 2881 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2882 * 2883 * @dev: network device 2884 * @bssid: the BSSID of the IBSS joined 2885 * @gfp: allocation flags 2886 * 2887 * This function notifies cfg80211 that the device joined an IBSS or 2888 * switched to a different BSSID. Before this function can be called, 2889 * either a beacon has to have been received from the IBSS, or one of 2890 * the cfg80211_inform_bss{,_frame} functions must have been called 2891 * with the locally generated beacon -- this guarantees that there is 2892 * always a scan result for this IBSS. cfg80211 will handle the rest. 2893 */ 2894 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2895 2896 /** 2897 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 2898 * 2899 * @dev: network device 2900 * @macaddr: the MAC address of the new candidate 2901 * @ie: information elements advertised by the peer candidate 2902 * @ie_len: lenght of the information elements buffer 2903 * @gfp: allocation flags 2904 * 2905 * This function notifies cfg80211 that the mesh peer candidate has been 2906 * detected, most likely via a beacon or, less likely, via a probe response. 2907 * cfg80211 then sends a notification to userspace. 2908 */ 2909 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 2910 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 2911 2912 /** 2913 * DOC: RFkill integration 2914 * 2915 * RFkill integration in cfg80211 is almost invisible to drivers, 2916 * as cfg80211 automatically registers an rfkill instance for each 2917 * wireless device it knows about. Soft kill is also translated 2918 * into disconnecting and turning all interfaces off, drivers are 2919 * expected to turn off the device when all interfaces are down. 2920 * 2921 * However, devices may have a hard RFkill line, in which case they 2922 * also need to interact with the rfkill subsystem, via cfg80211. 2923 * They can do this with a few helper functions documented here. 2924 */ 2925 2926 /** 2927 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2928 * @wiphy: the wiphy 2929 * @blocked: block status 2930 */ 2931 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2932 2933 /** 2934 * wiphy_rfkill_start_polling - start polling rfkill 2935 * @wiphy: the wiphy 2936 */ 2937 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2938 2939 /** 2940 * wiphy_rfkill_stop_polling - stop polling rfkill 2941 * @wiphy: the wiphy 2942 */ 2943 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2944 2945 #ifdef CONFIG_NL80211_TESTMODE 2946 /** 2947 * DOC: Test mode 2948 * 2949 * Test mode is a set of utility functions to allow drivers to 2950 * interact with driver-specific tools to aid, for instance, 2951 * factory programming. 2952 * 2953 * This chapter describes how drivers interact with it, for more 2954 * information see the nl80211 book's chapter on it. 2955 */ 2956 2957 /** 2958 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2959 * @wiphy: the wiphy 2960 * @approxlen: an upper bound of the length of the data that will 2961 * be put into the skb 2962 * 2963 * This function allocates and pre-fills an skb for a reply to 2964 * the testmode command. Since it is intended for a reply, calling 2965 * it outside of the @testmode_cmd operation is invalid. 2966 * 2967 * The returned skb (or %NULL if any errors happen) is pre-filled 2968 * with the wiphy index and set up in a way that any data that is 2969 * put into the skb (with skb_put(), nla_put() or similar) will end 2970 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2971 * needs to be done with the skb is adding data for the corresponding 2972 * userspace tool which can then read that data out of the testdata 2973 * attribute. You must not modify the skb in any other way. 2974 * 2975 * When done, call cfg80211_testmode_reply() with the skb and return 2976 * its error code as the result of the @testmode_cmd operation. 2977 */ 2978 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2979 int approxlen); 2980 2981 /** 2982 * cfg80211_testmode_reply - send the reply skb 2983 * @skb: The skb, must have been allocated with 2984 * cfg80211_testmode_alloc_reply_skb() 2985 * 2986 * Returns an error code or 0 on success, since calling this 2987 * function will usually be the last thing before returning 2988 * from the @testmode_cmd you should return the error code. 2989 * Note that this function consumes the skb regardless of the 2990 * return value. 2991 */ 2992 int cfg80211_testmode_reply(struct sk_buff *skb); 2993 2994 /** 2995 * cfg80211_testmode_alloc_event_skb - allocate testmode event 2996 * @wiphy: the wiphy 2997 * @approxlen: an upper bound of the length of the data that will 2998 * be put into the skb 2999 * @gfp: allocation flags 3000 * 3001 * This function allocates and pre-fills an skb for an event on the 3002 * testmode multicast group. 3003 * 3004 * The returned skb (or %NULL if any errors happen) is set up in the 3005 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 3006 * for an event. As there, you should simply add data to it that will 3007 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 3008 * not modify the skb in any other way. 3009 * 3010 * When done filling the skb, call cfg80211_testmode_event() with the 3011 * skb to send the event. 3012 */ 3013 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 3014 int approxlen, gfp_t gfp); 3015 3016 /** 3017 * cfg80211_testmode_event - send the event 3018 * @skb: The skb, must have been allocated with 3019 * cfg80211_testmode_alloc_event_skb() 3020 * @gfp: allocation flags 3021 * 3022 * This function sends the given @skb, which must have been allocated 3023 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 3024 * consumes it. 3025 */ 3026 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 3027 3028 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 3029 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 3030 #else 3031 #define CFG80211_TESTMODE_CMD(cmd) 3032 #define CFG80211_TESTMODE_DUMP(cmd) 3033 #endif 3034 3035 /** 3036 * cfg80211_connect_result - notify cfg80211 of connection result 3037 * 3038 * @dev: network device 3039 * @bssid: the BSSID of the AP 3040 * @req_ie: association request IEs (maybe be %NULL) 3041 * @req_ie_len: association request IEs length 3042 * @resp_ie: association response IEs (may be %NULL) 3043 * @resp_ie_len: assoc response IEs length 3044 * @status: status code, 0 for successful connection, use 3045 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 3046 * the real status code for failures. 3047 * @gfp: allocation flags 3048 * 3049 * It should be called by the underlying driver whenever connect() has 3050 * succeeded. 3051 */ 3052 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 3053 const u8 *req_ie, size_t req_ie_len, 3054 const u8 *resp_ie, size_t resp_ie_len, 3055 u16 status, gfp_t gfp); 3056 3057 /** 3058 * cfg80211_roamed - notify cfg80211 of roaming 3059 * 3060 * @dev: network device 3061 * @channel: the channel of the new AP 3062 * @bssid: the BSSID of the new AP 3063 * @req_ie: association request IEs (maybe be %NULL) 3064 * @req_ie_len: association request IEs length 3065 * @resp_ie: association response IEs (may be %NULL) 3066 * @resp_ie_len: assoc response IEs length 3067 * @gfp: allocation flags 3068 * 3069 * It should be called by the underlying driver whenever it roamed 3070 * from one AP to another while connected. 3071 */ 3072 void cfg80211_roamed(struct net_device *dev, 3073 struct ieee80211_channel *channel, 3074 const u8 *bssid, 3075 const u8 *req_ie, size_t req_ie_len, 3076 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3077 3078 /** 3079 * cfg80211_roamed_bss - notify cfg80211 of roaming 3080 * 3081 * @dev: network device 3082 * @bss: entry of bss to which STA got roamed 3083 * @req_ie: association request IEs (maybe be %NULL) 3084 * @req_ie_len: association request IEs length 3085 * @resp_ie: association response IEs (may be %NULL) 3086 * @resp_ie_len: assoc response IEs length 3087 * @gfp: allocation flags 3088 * 3089 * This is just a wrapper to notify cfg80211 of roaming event with driver 3090 * passing bss to avoid a race in timeout of the bss entry. It should be 3091 * called by the underlying driver whenever it roamed from one AP to another 3092 * while connected. Drivers which have roaming implemented in firmware 3093 * may use this function to avoid a race in bss entry timeout where the bss 3094 * entry of the new AP is seen in the driver, but gets timed out by the time 3095 * it is accessed in __cfg80211_roamed() due to delay in scheduling 3096 * rdev->event_work. In case of any failures, the reference is released 3097 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 3098 * it will be released while diconneting from the current bss. 3099 */ 3100 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 3101 const u8 *req_ie, size_t req_ie_len, 3102 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 3103 3104 /** 3105 * cfg80211_disconnected - notify cfg80211 that connection was dropped 3106 * 3107 * @dev: network device 3108 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 3109 * @ie_len: length of IEs 3110 * @reason: reason code for the disconnection, set it to 0 if unknown 3111 * @gfp: allocation flags 3112 * 3113 * After it calls this function, the driver should enter an idle state 3114 * and not try to connect to any AP any more. 3115 */ 3116 void cfg80211_disconnected(struct net_device *dev, u16 reason, 3117 u8 *ie, size_t ie_len, gfp_t gfp); 3118 3119 /** 3120 * cfg80211_ready_on_channel - notification of remain_on_channel start 3121 * @dev: network device 3122 * @cookie: the request cookie 3123 * @chan: The current channel (from remain_on_channel request) 3124 * @channel_type: Channel type 3125 * @duration: Duration in milliseconds that the driver intents to remain on the 3126 * channel 3127 * @gfp: allocation flags 3128 */ 3129 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 3130 struct ieee80211_channel *chan, 3131 enum nl80211_channel_type channel_type, 3132 unsigned int duration, gfp_t gfp); 3133 3134 /** 3135 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 3136 * @dev: network device 3137 * @cookie: the request cookie 3138 * @chan: The current channel (from remain_on_channel request) 3139 * @channel_type: Channel type 3140 * @gfp: allocation flags 3141 */ 3142 void cfg80211_remain_on_channel_expired(struct net_device *dev, 3143 u64 cookie, 3144 struct ieee80211_channel *chan, 3145 enum nl80211_channel_type channel_type, 3146 gfp_t gfp); 3147 3148 3149 /** 3150 * cfg80211_new_sta - notify userspace about station 3151 * 3152 * @dev: the netdev 3153 * @mac_addr: the station's address 3154 * @sinfo: the station information 3155 * @gfp: allocation flags 3156 */ 3157 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 3158 struct station_info *sinfo, gfp_t gfp); 3159 3160 /** 3161 * cfg80211_del_sta - notify userspace about deletion of a station 3162 * 3163 * @dev: the netdev 3164 * @mac_addr: the station's address 3165 * @gfp: allocation flags 3166 */ 3167 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp); 3168 3169 /** 3170 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 3171 * @dev: network device 3172 * @freq: Frequency on which the frame was received in MHz 3173 * @buf: Management frame (header + body) 3174 * @len: length of the frame data 3175 * @gfp: context flags 3176 * 3177 * Returns %true if a user space application has registered for this frame. 3178 * For action frames, that makes it responsible for rejecting unrecognized 3179 * action frames; %false otherwise, in which case for action frames the 3180 * driver is responsible for rejecting the frame. 3181 * 3182 * This function is called whenever an Action frame is received for a station 3183 * mode interface, but is not processed in kernel. 3184 */ 3185 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 3186 size_t len, gfp_t gfp); 3187 3188 /** 3189 * cfg80211_mgmt_tx_status - notification of TX status for management frame 3190 * @dev: network device 3191 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 3192 * @buf: Management frame (header + body) 3193 * @len: length of the frame data 3194 * @ack: Whether frame was acknowledged 3195 * @gfp: context flags 3196 * 3197 * This function is called whenever a management frame was requested to be 3198 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 3199 * transmission attempt. 3200 */ 3201 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 3202 const u8 *buf, size_t len, bool ack, gfp_t gfp); 3203 3204 3205 /** 3206 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 3207 * @dev: network device 3208 * @rssi_event: the triggered RSSI event 3209 * @gfp: context flags 3210 * 3211 * This function is called when a configured connection quality monitoring 3212 * rssi threshold reached event occurs. 3213 */ 3214 void cfg80211_cqm_rssi_notify(struct net_device *dev, 3215 enum nl80211_cqm_rssi_threshold_event rssi_event, 3216 gfp_t gfp); 3217 3218 /** 3219 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 3220 * @dev: network device 3221 * @peer: peer's MAC address 3222 * @num_packets: how many packets were lost -- should be a fixed threshold 3223 * but probably no less than maybe 50, or maybe a throughput dependent 3224 * threshold (to account for temporary interference) 3225 * @gfp: context flags 3226 */ 3227 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 3228 const u8 *peer, u32 num_packets, gfp_t gfp); 3229 3230 /** 3231 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 3232 * @dev: network device 3233 * @bssid: BSSID of AP (to avoid races) 3234 * @replay_ctr: new replay counter 3235 * @gfp: allocation flags 3236 */ 3237 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 3238 const u8 *replay_ctr, gfp_t gfp); 3239 3240 /** 3241 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 3242 * @dev: network device 3243 * @index: candidate index (the smaller the index, the higher the priority) 3244 * @bssid: BSSID of AP 3245 * @preauth: Whether AP advertises support for RSN pre-authentication 3246 * @gfp: allocation flags 3247 */ 3248 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 3249 const u8 *bssid, bool preauth, gfp_t gfp); 3250 3251 /** 3252 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 3253 * @dev: The device the frame matched to 3254 * @addr: the transmitter address 3255 * @gfp: context flags 3256 * 3257 * This function is used in AP mode (only!) to inform userspace that 3258 * a spurious class 3 frame was received, to be able to deauth the 3259 * sender. 3260 * Returns %true if the frame was passed to userspace (or this failed 3261 * for a reason other than not having a subscription.) 3262 */ 3263 bool cfg80211_rx_spurious_frame(struct net_device *dev, 3264 const u8 *addr, gfp_t gfp); 3265 3266 /** 3267 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 3268 * @dev: The device the frame matched to 3269 * @addr: the transmitter address 3270 * @gfp: context flags 3271 * 3272 * This function is used in AP mode (only!) to inform userspace that 3273 * an associated station sent a 4addr frame but that wasn't expected. 3274 * It is allowed and desirable to send this event only once for each 3275 * station to avoid event flooding. 3276 * Returns %true if the frame was passed to userspace (or this failed 3277 * for a reason other than not having a subscription.) 3278 */ 3279 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 3280 const u8 *addr, gfp_t gfp); 3281 3282 /** 3283 * cfg80211_probe_status - notify userspace about probe status 3284 * @dev: the device the probe was sent on 3285 * @addr: the address of the peer 3286 * @cookie: the cookie filled in @probe_client previously 3287 * @acked: indicates whether probe was acked or not 3288 * @gfp: allocation flags 3289 */ 3290 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 3291 u64 cookie, bool acked, gfp_t gfp); 3292 3293 /** 3294 * cfg80211_report_obss_beacon - report beacon from other APs 3295 * @wiphy: The wiphy that received the beacon 3296 * @frame: the frame 3297 * @len: length of the frame 3298 * @freq: frequency the frame was received on 3299 * @gfp: allocation flags 3300 * 3301 * Use this function to report to userspace when a beacon was 3302 * received. It is not useful to call this when there is no 3303 * netdev that is in AP/GO mode. 3304 */ 3305 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 3306 const u8 *frame, size_t len, 3307 int freq, gfp_t gfp); 3308 3309 /* 3310 * cfg80211_can_beacon_sec_chan - test if ht40 on extension channel can be used 3311 * @wiphy: the wiphy 3312 * @chan: main channel 3313 * @channel_type: HT mode 3314 */ 3315 int cfg80211_can_beacon_sec_chan(struct wiphy *wiphy, 3316 struct ieee80211_channel *chan, 3317 enum nl80211_channel_type channel_type); 3318 3319 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 3320 3321 /* wiphy_printk helpers, similar to dev_printk */ 3322 3323 #define wiphy_printk(level, wiphy, format, args...) \ 3324 dev_printk(level, &(wiphy)->dev, format, ##args) 3325 #define wiphy_emerg(wiphy, format, args...) \ 3326 dev_emerg(&(wiphy)->dev, format, ##args) 3327 #define wiphy_alert(wiphy, format, args...) \ 3328 dev_alert(&(wiphy)->dev, format, ##args) 3329 #define wiphy_crit(wiphy, format, args...) \ 3330 dev_crit(&(wiphy)->dev, format, ##args) 3331 #define wiphy_err(wiphy, format, args...) \ 3332 dev_err(&(wiphy)->dev, format, ##args) 3333 #define wiphy_warn(wiphy, format, args...) \ 3334 dev_warn(&(wiphy)->dev, format, ##args) 3335 #define wiphy_notice(wiphy, format, args...) \ 3336 dev_notice(&(wiphy)->dev, format, ##args) 3337 #define wiphy_info(wiphy, format, args...) \ 3338 dev_info(&(wiphy)->dev, format, ##args) 3339 3340 #define wiphy_debug(wiphy, format, args...) \ 3341 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 3342 3343 #define wiphy_dbg(wiphy, format, args...) \ 3344 dev_dbg(&(wiphy)->dev, format, ##args) 3345 3346 #if defined(VERBOSE_DEBUG) 3347 #define wiphy_vdbg wiphy_dbg 3348 #else 3349 #define wiphy_vdbg(wiphy, format, args...) \ 3350 ({ \ 3351 if (0) \ 3352 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 3353 0; \ 3354 }) 3355 #endif 3356 3357 /* 3358 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 3359 * of using a WARN/WARN_ON to get the message out, including the 3360 * file/line information and a backtrace. 3361 */ 3362 #define wiphy_WARN(wiphy, format, args...) \ 3363 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 3364 3365 #endif /* __NET_CFG80211_H */ 3366