1 /* 2 * mac80211 <-> driver interface 3 * 4 * Copyright 2002-2005, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2014 Intel Mobile Communications GmbH 8 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 9 * Copyright (C) 2018 - 2019 Intel Corporation 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 */ 15 16 #ifndef MAC80211_H 17 #define MAC80211_H 18 19 #include <linux/bug.h> 20 #include <linux/kernel.h> 21 #include <linux/if_ether.h> 22 #include <linux/skbuff.h> 23 #include <linux/ieee80211.h> 24 #include <net/cfg80211.h> 25 #include <net/codel.h> 26 #include <net/ieee80211_radiotap.h> 27 #include <asm/unaligned.h> 28 29 /** 30 * DOC: Introduction 31 * 32 * mac80211 is the Linux stack for 802.11 hardware that implements 33 * only partial functionality in hard- or firmware. This document 34 * defines the interface between mac80211 and low-level hardware 35 * drivers. 36 */ 37 38 /** 39 * DOC: Calling mac80211 from interrupts 40 * 41 * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be 42 * called in hardware interrupt context. The low-level driver must not call any 43 * other functions in hardware interrupt context. If there is a need for such 44 * call, the low-level driver should first ACK the interrupt and perform the 45 * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even 46 * tasklet function. 47 * 48 * NOTE: If the driver opts to use the _irqsafe() functions, it may not also 49 * use the non-IRQ-safe functions! 50 */ 51 52 /** 53 * DOC: Warning 54 * 55 * If you're reading this document and not the header file itself, it will 56 * be incomplete because not all documentation has been converted yet. 57 */ 58 59 /** 60 * DOC: Frame format 61 * 62 * As a general rule, when frames are passed between mac80211 and the driver, 63 * they start with the IEEE 802.11 header and include the same octets that are 64 * sent over the air except for the FCS which should be calculated by the 65 * hardware. 66 * 67 * There are, however, various exceptions to this rule for advanced features: 68 * 69 * The first exception is for hardware encryption and decryption offload 70 * where the IV/ICV may or may not be generated in hardware. 71 * 72 * Secondly, when the hardware handles fragmentation, the frame handed to 73 * the driver from mac80211 is the MSDU, not the MPDU. 74 */ 75 76 /** 77 * DOC: mac80211 workqueue 78 * 79 * mac80211 provides its own workqueue for drivers and internal mac80211 use. 80 * The workqueue is a single threaded workqueue and can only be accessed by 81 * helpers for sanity checking. Drivers must ensure all work added onto the 82 * mac80211 workqueue should be cancelled on the driver stop() callback. 83 * 84 * mac80211 will flushed the workqueue upon interface removal and during 85 * suspend. 86 * 87 * All work performed on the mac80211 workqueue must not acquire the RTNL lock. 88 * 89 */ 90 91 /** 92 * DOC: mac80211 software tx queueing 93 * 94 * mac80211 provides an optional intermediate queueing implementation designed 95 * to allow the driver to keep hardware queues short and provide some fairness 96 * between different stations/interfaces. 97 * In this model, the driver pulls data frames from the mac80211 queue instead 98 * of letting mac80211 push them via drv_tx(). 99 * Other frames (e.g. control or management) are still pushed using drv_tx(). 100 * 101 * Drivers indicate that they use this model by implementing the .wake_tx_queue 102 * driver operation. 103 * 104 * Intermediate queues (struct ieee80211_txq) are kept per-sta per-tid, with 105 * another per-sta for non-data/non-mgmt and bufferable management frames, and 106 * a single per-vif queue for multicast data frames. 107 * 108 * The driver is expected to initialize its private per-queue data for stations 109 * and interfaces in the .add_interface and .sta_add ops. 110 * 111 * The driver can't access the queue directly. To dequeue a frame from a 112 * txq, it calls ieee80211_tx_dequeue(). Whenever mac80211 adds a new frame to a 113 * queue, it calls the .wake_tx_queue driver op. 114 * 115 * Drivers can optionally delegate responsibility for scheduling queues to 116 * mac80211, to take advantage of airtime fairness accounting. In this case, to 117 * obtain the next queue to pull frames from, the driver calls 118 * ieee80211_next_txq(). The driver is then expected to return the txq using 119 * ieee80211_return_txq(). 120 * 121 * For AP powersave TIM handling, the driver only needs to indicate if it has 122 * buffered packets in the driver specific data structures by calling 123 * ieee80211_sta_set_buffered(). For frames buffered in the ieee80211_txq 124 * struct, mac80211 sets the appropriate TIM PVB bits and calls 125 * .release_buffered_frames(). 126 * In that callback the driver is therefore expected to release its own 127 * buffered frames and afterwards also frames from the ieee80211_txq (obtained 128 * via the usual ieee80211_tx_dequeue). 129 */ 130 131 struct device; 132 133 /** 134 * enum ieee80211_max_queues - maximum number of queues 135 * 136 * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. 137 * @IEEE80211_MAX_QUEUE_MAP: bitmap with maximum queues set 138 */ 139 enum ieee80211_max_queues { 140 IEEE80211_MAX_QUEUES = 16, 141 IEEE80211_MAX_QUEUE_MAP = BIT(IEEE80211_MAX_QUEUES) - 1, 142 }; 143 144 #define IEEE80211_INVAL_HW_QUEUE 0xff 145 146 /** 147 * enum ieee80211_ac_numbers - AC numbers as used in mac80211 148 * @IEEE80211_AC_VO: voice 149 * @IEEE80211_AC_VI: video 150 * @IEEE80211_AC_BE: best effort 151 * @IEEE80211_AC_BK: background 152 */ 153 enum ieee80211_ac_numbers { 154 IEEE80211_AC_VO = 0, 155 IEEE80211_AC_VI = 1, 156 IEEE80211_AC_BE = 2, 157 IEEE80211_AC_BK = 3, 158 }; 159 160 /** 161 * struct ieee80211_tx_queue_params - transmit queue configuration 162 * 163 * The information provided in this structure is required for QoS 164 * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. 165 * 166 * @aifs: arbitration interframe space [0..255] 167 * @cw_min: minimum contention window [a value of the form 168 * 2^n-1 in the range 1..32767] 169 * @cw_max: maximum contention window [like @cw_min] 170 * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled 171 * @acm: is mandatory admission control required for the access category 172 * @uapsd: is U-APSD mode enabled for the queue 173 * @mu_edca: is the MU EDCA configured 174 * @mu_edca_param_rec: MU EDCA Parameter Record for HE 175 */ 176 struct ieee80211_tx_queue_params { 177 u16 txop; 178 u16 cw_min; 179 u16 cw_max; 180 u8 aifs; 181 bool acm; 182 bool uapsd; 183 bool mu_edca; 184 struct ieee80211_he_mu_edca_param_ac_rec mu_edca_param_rec; 185 }; 186 187 struct ieee80211_low_level_stats { 188 unsigned int dot11ACKFailureCount; 189 unsigned int dot11RTSFailureCount; 190 unsigned int dot11FCSErrorCount; 191 unsigned int dot11RTSSuccessCount; 192 }; 193 194 /** 195 * enum ieee80211_chanctx_change - change flag for channel context 196 * @IEEE80211_CHANCTX_CHANGE_WIDTH: The channel width changed 197 * @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed 198 * @IEEE80211_CHANCTX_CHANGE_RADAR: radar detection flag changed 199 * @IEEE80211_CHANCTX_CHANGE_CHANNEL: switched to another operating channel, 200 * this is used only with channel switching with CSA 201 * @IEEE80211_CHANCTX_CHANGE_MIN_WIDTH: The min required channel width changed 202 */ 203 enum ieee80211_chanctx_change { 204 IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(0), 205 IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(1), 206 IEEE80211_CHANCTX_CHANGE_RADAR = BIT(2), 207 IEEE80211_CHANCTX_CHANGE_CHANNEL = BIT(3), 208 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH = BIT(4), 209 }; 210 211 /** 212 * struct ieee80211_chanctx_conf - channel context that vifs may be tuned to 213 * 214 * This is the driver-visible part. The ieee80211_chanctx 215 * that contains it is visible in mac80211 only. 216 * 217 * @def: the channel definition 218 * @min_def: the minimum channel definition currently required. 219 * @rx_chains_static: The number of RX chains that must always be 220 * active on the channel to receive MIMO transmissions 221 * @rx_chains_dynamic: The number of RX chains that must be enabled 222 * after RTS/CTS handshake to receive SMPS MIMO transmissions; 223 * this will always be >= @rx_chains_static. 224 * @radar_enabled: whether radar detection is enabled on this channel. 225 * @drv_priv: data area for driver use, will always be aligned to 226 * sizeof(void *), size is determined in hw information. 227 */ 228 struct ieee80211_chanctx_conf { 229 struct cfg80211_chan_def def; 230 struct cfg80211_chan_def min_def; 231 232 u8 rx_chains_static, rx_chains_dynamic; 233 234 bool radar_enabled; 235 236 u8 drv_priv[0] __aligned(sizeof(void *)); 237 }; 238 239 /** 240 * enum ieee80211_chanctx_switch_mode - channel context switch mode 241 * @CHANCTX_SWMODE_REASSIGN_VIF: Both old and new contexts already 242 * exist (and will continue to exist), but the virtual interface 243 * needs to be switched from one to the other. 244 * @CHANCTX_SWMODE_SWAP_CONTEXTS: The old context exists but will stop 245 * to exist with this call, the new context doesn't exist but 246 * will be active after this call, the virtual interface switches 247 * from the old to the new (note that the driver may of course 248 * implement this as an on-the-fly chandef switch of the existing 249 * hardware context, but the mac80211 pointer for the old context 250 * will cease to exist and only the new one will later be used 251 * for changes/removal.) 252 */ 253 enum ieee80211_chanctx_switch_mode { 254 CHANCTX_SWMODE_REASSIGN_VIF, 255 CHANCTX_SWMODE_SWAP_CONTEXTS, 256 }; 257 258 /** 259 * struct ieee80211_vif_chanctx_switch - vif chanctx switch information 260 * 261 * This is structure is used to pass information about a vif that 262 * needs to switch from one chanctx to another. The 263 * &ieee80211_chanctx_switch_mode defines how the switch should be 264 * done. 265 * 266 * @vif: the vif that should be switched from old_ctx to new_ctx 267 * @old_ctx: the old context to which the vif was assigned 268 * @new_ctx: the new context to which the vif must be assigned 269 */ 270 struct ieee80211_vif_chanctx_switch { 271 struct ieee80211_vif *vif; 272 struct ieee80211_chanctx_conf *old_ctx; 273 struct ieee80211_chanctx_conf *new_ctx; 274 }; 275 276 /** 277 * enum ieee80211_bss_change - BSS change notification flags 278 * 279 * These flags are used with the bss_info_changed() callback 280 * to indicate which BSS parameter changed. 281 * 282 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), 283 * also implies a change in the AID. 284 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed 285 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed 286 * @BSS_CHANGED_ERP_SLOT: slot timing changed 287 * @BSS_CHANGED_HT: 802.11n parameters changed 288 * @BSS_CHANGED_BASIC_RATES: Basic rateset changed 289 * @BSS_CHANGED_BEACON_INT: Beacon interval changed 290 * @BSS_CHANGED_BSSID: BSSID changed, for whatever 291 * reason (IBSS and managed mode) 292 * @BSS_CHANGED_BEACON: Beacon data changed, retrieve 293 * new beacon (beaconing modes) 294 * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be 295 * enabled/disabled (beaconing modes) 296 * @BSS_CHANGED_CQM: Connection quality monitor config changed 297 * @BSS_CHANGED_IBSS: IBSS join status changed 298 * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. 299 * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note 300 * that it is only ever disabled for station mode. 301 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface. 302 * @BSS_CHANGED_SSID: SSID changed for this BSS (AP and IBSS mode) 303 * @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode) 304 * @BSS_CHANGED_PS: PS changed for this BSS (STA mode) 305 * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface 306 * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS) 307 * changed 308 * @BSS_CHANGED_BEACON_INFO: Data from the AP's beacon became available: 309 * currently dtim_period only is under consideration. 310 * @BSS_CHANGED_BANDWIDTH: The bandwidth used by this interface changed, 311 * note that this is only called when it changes after the channel 312 * context had been assigned. 313 * @BSS_CHANGED_OCB: OCB join status changed 314 * @BSS_CHANGED_MU_GROUPS: VHT MU-MIMO group id or user position changed 315 * @BSS_CHANGED_KEEP_ALIVE: keep alive options (idle period or protected 316 * keep alive) changed. 317 * @BSS_CHANGED_MCAST_RATE: Multicast Rate setting changed for this interface 318 * @BSS_CHANGED_FTM_RESPONDER: fime timing reasurement request responder 319 * functionality changed for this BSS (AP mode). 320 * 321 */ 322 enum ieee80211_bss_change { 323 BSS_CHANGED_ASSOC = 1<<0, 324 BSS_CHANGED_ERP_CTS_PROT = 1<<1, 325 BSS_CHANGED_ERP_PREAMBLE = 1<<2, 326 BSS_CHANGED_ERP_SLOT = 1<<3, 327 BSS_CHANGED_HT = 1<<4, 328 BSS_CHANGED_BASIC_RATES = 1<<5, 329 BSS_CHANGED_BEACON_INT = 1<<6, 330 BSS_CHANGED_BSSID = 1<<7, 331 BSS_CHANGED_BEACON = 1<<8, 332 BSS_CHANGED_BEACON_ENABLED = 1<<9, 333 BSS_CHANGED_CQM = 1<<10, 334 BSS_CHANGED_IBSS = 1<<11, 335 BSS_CHANGED_ARP_FILTER = 1<<12, 336 BSS_CHANGED_QOS = 1<<13, 337 BSS_CHANGED_IDLE = 1<<14, 338 BSS_CHANGED_SSID = 1<<15, 339 BSS_CHANGED_AP_PROBE_RESP = 1<<16, 340 BSS_CHANGED_PS = 1<<17, 341 BSS_CHANGED_TXPOWER = 1<<18, 342 BSS_CHANGED_P2P_PS = 1<<19, 343 BSS_CHANGED_BEACON_INFO = 1<<20, 344 BSS_CHANGED_BANDWIDTH = 1<<21, 345 BSS_CHANGED_OCB = 1<<22, 346 BSS_CHANGED_MU_GROUPS = 1<<23, 347 BSS_CHANGED_KEEP_ALIVE = 1<<24, 348 BSS_CHANGED_MCAST_RATE = 1<<25, 349 BSS_CHANGED_FTM_RESPONDER = 1<<26, 350 351 /* when adding here, make sure to change ieee80211_reconfig */ 352 }; 353 354 /* 355 * The maximum number of IPv4 addresses listed for ARP filtering. If the number 356 * of addresses for an interface increase beyond this value, hardware ARP 357 * filtering will be disabled. 358 */ 359 #define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 360 361 /** 362 * enum ieee80211_event_type - event to be notified to the low level driver 363 * @RSSI_EVENT: AP's rssi crossed the a threshold set by the driver. 364 * @MLME_EVENT: event related to MLME 365 * @BAR_RX_EVENT: a BAR was received 366 * @BA_FRAME_TIMEOUT: Frames were released from the reordering buffer because 367 * they timed out. This won't be called for each frame released, but only 368 * once each time the timeout triggers. 369 */ 370 enum ieee80211_event_type { 371 RSSI_EVENT, 372 MLME_EVENT, 373 BAR_RX_EVENT, 374 BA_FRAME_TIMEOUT, 375 }; 376 377 /** 378 * enum ieee80211_rssi_event_data - relevant when event type is %RSSI_EVENT 379 * @RSSI_EVENT_HIGH: AP's rssi went below the threshold set by the driver. 380 * @RSSI_EVENT_LOW: AP's rssi went above the threshold set by the driver. 381 */ 382 enum ieee80211_rssi_event_data { 383 RSSI_EVENT_HIGH, 384 RSSI_EVENT_LOW, 385 }; 386 387 /** 388 * struct ieee80211_rssi_event - data attached to an %RSSI_EVENT 389 * @data: See &enum ieee80211_rssi_event_data 390 */ 391 struct ieee80211_rssi_event { 392 enum ieee80211_rssi_event_data data; 393 }; 394 395 /** 396 * enum ieee80211_mlme_event_data - relevant when event type is %MLME_EVENT 397 * @AUTH_EVENT: the MLME operation is authentication 398 * @ASSOC_EVENT: the MLME operation is association 399 * @DEAUTH_RX_EVENT: deauth received.. 400 * @DEAUTH_TX_EVENT: deauth sent. 401 */ 402 enum ieee80211_mlme_event_data { 403 AUTH_EVENT, 404 ASSOC_EVENT, 405 DEAUTH_RX_EVENT, 406 DEAUTH_TX_EVENT, 407 }; 408 409 /** 410 * enum ieee80211_mlme_event_status - relevant when event type is %MLME_EVENT 411 * @MLME_SUCCESS: the MLME operation completed successfully. 412 * @MLME_DENIED: the MLME operation was denied by the peer. 413 * @MLME_TIMEOUT: the MLME operation timed out. 414 */ 415 enum ieee80211_mlme_event_status { 416 MLME_SUCCESS, 417 MLME_DENIED, 418 MLME_TIMEOUT, 419 }; 420 421 /** 422 * struct ieee80211_mlme_event - data attached to an %MLME_EVENT 423 * @data: See &enum ieee80211_mlme_event_data 424 * @status: See &enum ieee80211_mlme_event_status 425 * @reason: the reason code if applicable 426 */ 427 struct ieee80211_mlme_event { 428 enum ieee80211_mlme_event_data data; 429 enum ieee80211_mlme_event_status status; 430 u16 reason; 431 }; 432 433 /** 434 * struct ieee80211_ba_event - data attached for BlockAck related events 435 * @sta: pointer to the &ieee80211_sta to which this event relates 436 * @tid: the tid 437 * @ssn: the starting sequence number (for %BAR_RX_EVENT) 438 */ 439 struct ieee80211_ba_event { 440 struct ieee80211_sta *sta; 441 u16 tid; 442 u16 ssn; 443 }; 444 445 /** 446 * struct ieee80211_event - event to be sent to the driver 447 * @type: The event itself. See &enum ieee80211_event_type. 448 * @rssi: relevant if &type is %RSSI_EVENT 449 * @mlme: relevant if &type is %AUTH_EVENT 450 * @ba: relevant if &type is %BAR_RX_EVENT or %BA_FRAME_TIMEOUT 451 * @u:union holding the fields above 452 */ 453 struct ieee80211_event { 454 enum ieee80211_event_type type; 455 union { 456 struct ieee80211_rssi_event rssi; 457 struct ieee80211_mlme_event mlme; 458 struct ieee80211_ba_event ba; 459 } u; 460 }; 461 462 /** 463 * struct ieee80211_mu_group_data - STA's VHT MU-MIMO group data 464 * 465 * This structure describes the group id data of VHT MU-MIMO 466 * 467 * @membership: 64 bits array - a bit is set if station is member of the group 468 * @position: 2 bits per group id indicating the position in the group 469 */ 470 struct ieee80211_mu_group_data { 471 u8 membership[WLAN_MEMBERSHIP_LEN]; 472 u8 position[WLAN_USER_POSITION_LEN]; 473 }; 474 475 /** 476 * struct ieee80211_ftm_responder_params - FTM responder parameters 477 * 478 * @lci: LCI subelement content 479 * @civicloc: CIVIC location subelement content 480 * @lci_len: LCI data length 481 * @civicloc_len: Civic data length 482 */ 483 struct ieee80211_ftm_responder_params { 484 const u8 *lci; 485 const u8 *civicloc; 486 size_t lci_len; 487 size_t civicloc_len; 488 }; 489 490 /** 491 * struct ieee80211_bss_conf - holds the BSS's changing parameters 492 * 493 * This structure keeps information about a BSS (and an association 494 * to that BSS) that can change during the lifetime of the BSS. 495 * 496 * @bss_color: 6-bit value to mark inter-BSS frame, if BSS supports HE 497 * @htc_trig_based_pkt_ext: default PE in 4us units, if BSS supports HE 498 * @multi_sta_back_32bit: supports BA bitmap of 32-bits in Multi-STA BACK 499 * @uora_exists: is the UORA element advertised by AP 500 * @ack_enabled: indicates support to receive a multi-TID that solicits either 501 * ACK, BACK or both 502 * @uora_ocw_range: UORA element's OCW Range field 503 * @frame_time_rts_th: HE duration RTS threshold, in units of 32us 504 * @he_support: does this BSS support HE 505 * @twt_requester: does this BSS support TWT requester (relevant for managed 506 * mode only, set if the AP advertises TWT responder role) 507 * @assoc: association status 508 * @ibss_joined: indicates whether this station is part of an IBSS 509 * or not 510 * @ibss_creator: indicates if a new IBSS network is being created 511 * @aid: association ID number, valid only when @assoc is true 512 * @use_cts_prot: use CTS protection 513 * @use_short_preamble: use 802.11b short preamble 514 * @use_short_slot: use short slot time (only relevant for ERP) 515 * @dtim_period: num of beacons before the next DTIM, for beaconing, 516 * valid in station mode only if after the driver was notified 517 * with the %BSS_CHANGED_BEACON_INFO flag, will be non-zero then. 518 * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old 519 * as it may have been received during scanning long ago). If the 520 * HW flag %IEEE80211_HW_TIMING_BEACON_ONLY is set, then this can 521 * only come from a beacon, but might not become valid until after 522 * association when a beacon is received (which is notified with the 523 * %BSS_CHANGED_DTIM flag.). See also sync_dtim_count important notice. 524 * @sync_device_ts: the device timestamp corresponding to the sync_tsf, 525 * the driver/device can use this to calculate synchronisation 526 * (see @sync_tsf). See also sync_dtim_count important notice. 527 * @sync_dtim_count: Only valid when %IEEE80211_HW_TIMING_BEACON_ONLY 528 * is requested, see @sync_tsf/@sync_device_ts. 529 * IMPORTANT: These three sync_* parameters would possibly be out of sync 530 * by the time the driver will use them. The synchronized view is currently 531 * guaranteed only in certain callbacks. 532 * @beacon_int: beacon interval 533 * @assoc_capability: capabilities taken from assoc resp 534 * @basic_rates: bitmap of basic rates, each bit stands for an 535 * index into the rate table configured by the driver in 536 * the current band. 537 * @beacon_rate: associated AP's beacon TX rate 538 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 539 * @bssid: The BSSID for this BSS 540 * @enable_beacon: whether beaconing should be enabled or not 541 * @chandef: Channel definition for this BSS -- the hardware might be 542 * configured a higher bandwidth than this BSS uses, for example. 543 * @mu_group: VHT MU-MIMO group membership data 544 * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation. 545 * This field is only valid when the channel is a wide HT/VHT channel. 546 * Note that with TDLS this can be the case (channel is HT, protection must 547 * be used from this field) even when the BSS association isn't using HT. 548 * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value 549 * implies disabled. As with the cfg80211 callback, a change here should 550 * cause an event to be sent indicating where the current value is in 551 * relation to the newly configured threshold. 552 * @cqm_rssi_low: Connection quality monitor RSSI lower threshold, a zero value 553 * implies disabled. This is an alternative mechanism to the single 554 * threshold event and can't be enabled simultaneously with it. 555 * @cqm_rssi_high: Connection quality monitor RSSI upper threshold. 556 * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis 557 * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The 558 * may filter ARP queries targeted for other addresses than listed here. 559 * The driver must allow ARP queries targeted for all address listed here 560 * to pass through. An empty list implies no ARP queries need to pass. 561 * @arp_addr_cnt: Number of addresses currently on the list. Note that this 562 * may be larger than %IEEE80211_BSS_ARP_ADDR_LIST_LEN (the arp_addr_list 563 * array size), it's up to the driver what to do in that case. 564 * @qos: This is a QoS-enabled BSS. 565 * @idle: This interface is idle. There's also a global idle flag in the 566 * hardware config which may be more appropriate depending on what 567 * your driver/device needs to do. 568 * @ps: power-save mode (STA only). This flag is NOT affected by 569 * offchannel/dynamic_ps operations. 570 * @ssid: The SSID of the current vif. Valid in AP and IBSS mode. 571 * @ssid_len: Length of SSID given in @ssid. 572 * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode. 573 * @txpower: TX power in dBm 574 * @txpower_type: TX power adjustment used to control per packet Transmit 575 * Power Control (TPC) in lower driver for the current vif. In particular 576 * TPC is enabled if value passed in %txpower_type is 577 * NL80211_TX_POWER_LIMITED (allow using less than specified from 578 * userspace), whereas TPC is disabled if %txpower_type is set to 579 * NL80211_TX_POWER_FIXED (use value configured from userspace) 580 * @p2p_noa_attr: P2P NoA attribute for P2P powersave 581 * @allow_p2p_go_ps: indication for AP or P2P GO interface, whether it's allowed 582 * to use P2P PS mechanism or not. AP/P2P GO is not allowed to use P2P PS 583 * if it has associated clients without P2P PS support. 584 * @max_idle_period: the time period during which the station can refrain from 585 * transmitting frames to its associated AP without being disassociated. 586 * In units of 1000 TUs. Zero value indicates that the AP did not include 587 * a (valid) BSS Max Idle Period Element. 588 * @protected_keep_alive: if set, indicates that the station should send an RSN 589 * protected frame to the AP to reset the idle timer at the AP for the 590 * station. 591 * @ftm_responder: whether to enable or disable fine timing measurement FTM 592 * responder functionality. 593 * @ftmr_params: configurable lci/civic parameter when enabling FTM responder. 594 * @nontransmitted: this BSS is a nontransmitted BSS profile 595 * @transmitter_bssid: the address of transmitter AP 596 * @bssid_index: index inside the multiple BSSID set 597 * @bssid_indicator: 2^bssid_indicator is the maximum number of APs in set 598 * @ema_ap: AP supports enhancements of discovery and advertisement of 599 * nontransmitted BSSIDs 600 * @profile_periodicity: the least number of beacon frames need to be received 601 * in order to discover all the nontransmitted BSSIDs in the set. 602 */ 603 struct ieee80211_bss_conf { 604 const u8 *bssid; 605 u8 bss_color; 606 u8 htc_trig_based_pkt_ext; 607 bool multi_sta_back_32bit; 608 bool uora_exists; 609 bool ack_enabled; 610 u8 uora_ocw_range; 611 u16 frame_time_rts_th; 612 bool he_support; 613 bool twt_requester; 614 /* association related data */ 615 bool assoc, ibss_joined; 616 bool ibss_creator; 617 u16 aid; 618 /* erp related data */ 619 bool use_cts_prot; 620 bool use_short_preamble; 621 bool use_short_slot; 622 bool enable_beacon; 623 u8 dtim_period; 624 u16 beacon_int; 625 u16 assoc_capability; 626 u64 sync_tsf; 627 u32 sync_device_ts; 628 u8 sync_dtim_count; 629 u32 basic_rates; 630 struct ieee80211_rate *beacon_rate; 631 int mcast_rate[NUM_NL80211_BANDS]; 632 u16 ht_operation_mode; 633 s32 cqm_rssi_thold; 634 u32 cqm_rssi_hyst; 635 s32 cqm_rssi_low; 636 s32 cqm_rssi_high; 637 struct cfg80211_chan_def chandef; 638 struct ieee80211_mu_group_data mu_group; 639 __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; 640 int arp_addr_cnt; 641 bool qos; 642 bool idle; 643 bool ps; 644 u8 ssid[IEEE80211_MAX_SSID_LEN]; 645 size_t ssid_len; 646 bool hidden_ssid; 647 int txpower; 648 enum nl80211_tx_power_setting txpower_type; 649 struct ieee80211_p2p_noa_attr p2p_noa_attr; 650 bool allow_p2p_go_ps; 651 u16 max_idle_period; 652 bool protected_keep_alive; 653 bool ftm_responder; 654 struct ieee80211_ftm_responder_params *ftmr_params; 655 /* Multiple BSSID data */ 656 bool nontransmitted; 657 u8 transmitter_bssid[ETH_ALEN]; 658 u8 bssid_index; 659 u8 bssid_indicator; 660 bool ema_ap; 661 u8 profile_periodicity; 662 }; 663 664 /** 665 * enum mac80211_tx_info_flags - flags to describe transmission information/status 666 * 667 * These flags are used with the @flags member of &ieee80211_tx_info. 668 * 669 * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. 670 * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence 671 * number to this frame, taking care of not overwriting the fragment 672 * number and increasing the sequence number only when the 673 * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly 674 * assign sequence numbers to QoS-data frames but cannot do so correctly 675 * for non-QoS-data and management frames because beacons need them from 676 * that counter as well and mac80211 cannot guarantee proper sequencing. 677 * If this flag is set, the driver should instruct the hardware to 678 * assign a sequence number to the frame or assign one itself. Cf. IEEE 679 * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for 680 * beacons and always be clear for frames without a sequence number field. 681 * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack 682 * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination 683 * station 684 * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame 685 * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon 686 * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU 687 * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. 688 * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted 689 * because the destination STA was in powersave mode. Note that to 690 * avoid race conditions, the filter must be set by the hardware or 691 * firmware upon receiving a frame that indicates that the station 692 * went to sleep (must be done on device to filter frames already on 693 * the queue) and may only be unset after mac80211 gives the OK for 694 * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), 695 * since only then is it guaranteed that no more frames are in the 696 * hardware queue. 697 * @IEEE80211_TX_STAT_ACK: Frame was acknowledged 698 * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status 699 * is for the whole aggregation. 700 * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, 701 * so consider using block ack request (BAR). 702 * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be 703 * set by rate control algorithms to indicate probe rate, will 704 * be cleared for fragmented frames (except on the last fragment) 705 * @IEEE80211_TX_INTFL_OFFCHAN_TX_OK: Internal to mac80211. Used to indicate 706 * that a frame can be transmitted while the queues are stopped for 707 * off-channel operation. 708 * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, 709 * used to indicate that a pending frame requires TX processing before 710 * it can be sent out. 711 * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, 712 * used to indicate that a frame was already retried due to PS 713 * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, 714 * used to indicate frame should not be encrypted 715 * @IEEE80211_TX_CTL_NO_PS_BUFFER: This frame is a response to a poll 716 * frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must 717 * be sent although the station is in powersave mode. 718 * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the 719 * transmit function after the current frame, this can be used 720 * by drivers to kick the DMA queue only if unset or when the 721 * queue gets full. 722 * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted 723 * after TX status because the destination was asleep, it must not 724 * be modified again (no seqno assignment, crypto, etc.) 725 * @IEEE80211_TX_INTFL_MLME_CONN_TX: This frame was transmitted by the MLME 726 * code for connection establishment, this indicates that its status 727 * should kick the MLME state machine. 728 * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 729 * MLME command (internal to mac80211 to figure out whether to send TX 730 * status to user space) 731 * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame 732 * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this 733 * frame and selects the maximum number of streams that it can use. 734 * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on 735 * the off-channel channel when a remain-on-channel offload is done 736 * in hardware -- normal packets still flow and are expected to be 737 * handled properly by the device. 738 * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP 739 * testing. It will be sent out with incorrect Michael MIC key to allow 740 * TKIP countermeasures to be tested. 741 * @IEEE80211_TX_CTL_NO_CCK_RATE: This frame will be sent at non CCK rate. 742 * This flag is actually used for management frame especially for P2P 743 * frames not being sent at CCK rate in 2GHz band. 744 * @IEEE80211_TX_STATUS_EOSP: This packet marks the end of service period, 745 * when its status is reported the service period ends. For frames in 746 * an SP that mac80211 transmits, it is already set; for driver frames 747 * the driver may set this flag. It is also used to do the same for 748 * PS-Poll responses. 749 * @IEEE80211_TX_CTL_USE_MINRATE: This frame will be sent at lowest rate. 750 * This flag is used to send nullfunc frame at minimum rate when 751 * the nullfunc is used for connection monitoring purpose. 752 * @IEEE80211_TX_CTL_DONTFRAG: Don't fragment this packet even if it 753 * would be fragmented by size (this is optional, only used for 754 * monitor injection). 755 * @IEEE80211_TX_STAT_NOACK_TRANSMITTED: A frame that was marked with 756 * IEEE80211_TX_CTL_NO_ACK has been successfully transmitted without 757 * any errors (like issues specific to the driver/HW). 758 * This flag must not be set for frames that don't request no-ack 759 * behaviour with IEEE80211_TX_CTL_NO_ACK. 760 * 761 * Note: If you have to add new flags to the enumeration, then don't 762 * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary. 763 */ 764 enum mac80211_tx_info_flags { 765 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), 766 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 767 IEEE80211_TX_CTL_NO_ACK = BIT(2), 768 IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), 769 IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), 770 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), 771 IEEE80211_TX_CTL_AMPDU = BIT(6), 772 IEEE80211_TX_CTL_INJECTED = BIT(7), 773 IEEE80211_TX_STAT_TX_FILTERED = BIT(8), 774 IEEE80211_TX_STAT_ACK = BIT(9), 775 IEEE80211_TX_STAT_AMPDU = BIT(10), 776 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), 777 IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), 778 IEEE80211_TX_INTFL_OFFCHAN_TX_OK = BIT(13), 779 IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), 780 IEEE80211_TX_INTFL_RETRIED = BIT(15), 781 IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), 782 IEEE80211_TX_CTL_NO_PS_BUFFER = BIT(17), 783 IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), 784 IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), 785 IEEE80211_TX_INTFL_MLME_CONN_TX = BIT(20), 786 IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), 787 IEEE80211_TX_CTL_LDPC = BIT(22), 788 IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), 789 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25), 790 IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26), 791 IEEE80211_TX_CTL_NO_CCK_RATE = BIT(27), 792 IEEE80211_TX_STATUS_EOSP = BIT(28), 793 IEEE80211_TX_CTL_USE_MINRATE = BIT(29), 794 IEEE80211_TX_CTL_DONTFRAG = BIT(30), 795 IEEE80211_TX_STAT_NOACK_TRANSMITTED = BIT(31), 796 }; 797 798 #define IEEE80211_TX_CTL_STBC_SHIFT 23 799 800 /** 801 * enum mac80211_tx_control_flags - flags to describe transmit control 802 * 803 * @IEEE80211_TX_CTRL_PORT_CTRL_PROTO: this frame is a port control 804 * protocol frame (e.g. EAP) 805 * @IEEE80211_TX_CTRL_PS_RESPONSE: This frame is a response to a poll 806 * frame (PS-Poll or uAPSD). 807 * @IEEE80211_TX_CTRL_RATE_INJECT: This frame is injected with rate information 808 * @IEEE80211_TX_CTRL_AMSDU: This frame is an A-MSDU frame 809 * @IEEE80211_TX_CTRL_FAST_XMIT: This frame is going through the fast_xmit path 810 * @IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP: This frame skips mesh path lookup 811 * 812 * These flags are used in tx_info->control.flags. 813 */ 814 enum mac80211_tx_control_flags { 815 IEEE80211_TX_CTRL_PORT_CTRL_PROTO = BIT(0), 816 IEEE80211_TX_CTRL_PS_RESPONSE = BIT(1), 817 IEEE80211_TX_CTRL_RATE_INJECT = BIT(2), 818 IEEE80211_TX_CTRL_AMSDU = BIT(3), 819 IEEE80211_TX_CTRL_FAST_XMIT = BIT(4), 820 IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP = BIT(5), 821 }; 822 823 /* 824 * This definition is used as a mask to clear all temporary flags, which are 825 * set by the tx handlers for each transmission attempt by the mac80211 stack. 826 */ 827 #define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \ 828 IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \ 829 IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \ 830 IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \ 831 IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \ 832 IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_NO_PS_BUFFER | \ 833 IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \ 834 IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP) 835 836 /** 837 * enum mac80211_rate_control_flags - per-rate flags set by the 838 * Rate Control algorithm. 839 * 840 * These flags are set by the Rate control algorithm for each rate during tx, 841 * in the @flags member of struct ieee80211_tx_rate. 842 * 843 * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. 844 * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. 845 * This is set if the current BSS requires ERP protection. 846 * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. 847 * @IEEE80211_TX_RC_MCS: HT rate. 848 * @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split 849 * into a higher 4 bits (Nss) and lower 4 bits (MCS number) 850 * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in 851 * Greenfield mode. 852 * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. 853 * @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission 854 * @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission 855 * (80+80 isn't supported yet) 856 * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the 857 * adjacent 20 MHz channels, if the current channel type is 858 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. 859 * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. 860 */ 861 enum mac80211_rate_control_flags { 862 IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), 863 IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), 864 IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), 865 866 /* rate index is an HT/VHT MCS instead of an index */ 867 IEEE80211_TX_RC_MCS = BIT(3), 868 IEEE80211_TX_RC_GREEN_FIELD = BIT(4), 869 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), 870 IEEE80211_TX_RC_DUP_DATA = BIT(6), 871 IEEE80211_TX_RC_SHORT_GI = BIT(7), 872 IEEE80211_TX_RC_VHT_MCS = BIT(8), 873 IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(9), 874 IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(10), 875 }; 876 877 878 /* there are 40 bytes if you don't need the rateset to be kept */ 879 #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 880 881 /* if you do need the rateset, then you have less space */ 882 #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 883 884 /* maximum number of rate stages */ 885 #define IEEE80211_TX_MAX_RATES 4 886 887 /* maximum number of rate table entries */ 888 #define IEEE80211_TX_RATE_TABLE_SIZE 4 889 890 /** 891 * struct ieee80211_tx_rate - rate selection/status 892 * 893 * @idx: rate index to attempt to send with 894 * @flags: rate control flags (&enum mac80211_rate_control_flags) 895 * @count: number of tries in this rate before going to the next rate 896 * 897 * A value of -1 for @idx indicates an invalid rate and, if used 898 * in an array of retry rates, that no more rates should be tried. 899 * 900 * When used for transmit status reporting, the driver should 901 * always report the rate along with the flags it used. 902 * 903 * &struct ieee80211_tx_info contains an array of these structs 904 * in the control information, and it will be filled by the rate 905 * control algorithm according to what should be sent. For example, 906 * if this array contains, in the format { <idx>, <count> } the 907 * information:: 908 * 909 * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } 910 * 911 * then this means that the frame should be transmitted 912 * up to twice at rate 3, up to twice at rate 2, and up to four 913 * times at rate 1 if it doesn't get acknowledged. Say it gets 914 * acknowledged by the peer after the fifth attempt, the status 915 * information should then contain:: 916 * 917 * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... 918 * 919 * since it was transmitted twice at rate 3, twice at rate 2 920 * and once at rate 1 after which we received an acknowledgement. 921 */ 922 struct ieee80211_tx_rate { 923 s8 idx; 924 u16 count:5, 925 flags:11; 926 } __packed; 927 928 #define IEEE80211_MAX_TX_RETRY 31 929 930 static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate, 931 u8 mcs, u8 nss) 932 { 933 WARN_ON(mcs & ~0xF); 934 WARN_ON((nss - 1) & ~0x7); 935 rate->idx = ((nss - 1) << 4) | mcs; 936 } 937 938 static inline u8 939 ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate) 940 { 941 return rate->idx & 0xF; 942 } 943 944 static inline u8 945 ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate) 946 { 947 return (rate->idx >> 4) + 1; 948 } 949 950 /** 951 * struct ieee80211_tx_info - skb transmit information 952 * 953 * This structure is placed in skb->cb for three uses: 954 * (1) mac80211 TX control - mac80211 tells the driver what to do 955 * (2) driver internal use (if applicable) 956 * (3) TX status information - driver tells mac80211 what happened 957 * 958 * @flags: transmit info flags, defined above 959 * @band: the band to transmit on (use for checking for races) 960 * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC 961 * @ack_frame_id: internal frame ID for TX status, used internally 962 * @control: union part for control data 963 * @control.rates: TX rates array to try 964 * @control.rts_cts_rate_idx: rate for RTS or CTS 965 * @control.use_rts: use RTS 966 * @control.use_cts_prot: use RTS/CTS 967 * @control.short_preamble: use short preamble (CCK only) 968 * @control.skip_table: skip externally configured rate table 969 * @control.jiffies: timestamp for expiry on powersave clients 970 * @control.vif: virtual interface (may be NULL) 971 * @control.hw_key: key to encrypt with (may be NULL) 972 * @control.flags: control flags, see &enum mac80211_tx_control_flags 973 * @control.enqueue_time: enqueue time (for iTXQs) 974 * @driver_rates: alias to @control.rates to reserve space 975 * @pad: padding 976 * @rate_driver_data: driver use area if driver needs @control.rates 977 * @status: union part for status data 978 * @status.rates: attempted rates 979 * @status.ack_signal: ACK signal 980 * @status.ampdu_ack_len: AMPDU ack length 981 * @status.ampdu_len: AMPDU length 982 * @status.antenna: (legacy, kept only for iwlegacy) 983 * @status.tx_time: airtime consumed for transmission 984 * @status.is_valid_ack_signal: ACK signal is valid 985 * @status.status_driver_data: driver use area 986 * @ack: union part for pure ACK data 987 * @ack.cookie: cookie for the ACK 988 * @driver_data: array of driver_data pointers 989 * @ampdu_ack_len: number of acked aggregated frames. 990 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 991 * @ampdu_len: number of aggregated frames. 992 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 993 * @ack_signal: signal strength of the ACK frame 994 */ 995 struct ieee80211_tx_info { 996 /* common information */ 997 u32 flags; 998 u8 band; 999 1000 u8 hw_queue; 1001 1002 u16 ack_frame_id; 1003 1004 union { 1005 struct { 1006 union { 1007 /* rate control */ 1008 struct { 1009 struct ieee80211_tx_rate rates[ 1010 IEEE80211_TX_MAX_RATES]; 1011 s8 rts_cts_rate_idx; 1012 u8 use_rts:1; 1013 u8 use_cts_prot:1; 1014 u8 short_preamble:1; 1015 u8 skip_table:1; 1016 /* 2 bytes free */ 1017 }; 1018 /* only needed before rate control */ 1019 unsigned long jiffies; 1020 }; 1021 /* NB: vif can be NULL for injected frames */ 1022 struct ieee80211_vif *vif; 1023 struct ieee80211_key_conf *hw_key; 1024 u32 flags; 1025 codel_time_t enqueue_time; 1026 } control; 1027 struct { 1028 u64 cookie; 1029 } ack; 1030 struct { 1031 struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; 1032 s32 ack_signal; 1033 u8 ampdu_ack_len; 1034 u8 ampdu_len; 1035 u8 antenna; 1036 u16 tx_time; 1037 bool is_valid_ack_signal; 1038 void *status_driver_data[19 / sizeof(void *)]; 1039 } status; 1040 struct { 1041 struct ieee80211_tx_rate driver_rates[ 1042 IEEE80211_TX_MAX_RATES]; 1043 u8 pad[4]; 1044 1045 void *rate_driver_data[ 1046 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; 1047 }; 1048 void *driver_data[ 1049 IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; 1050 }; 1051 }; 1052 1053 /** 1054 * struct ieee80211_tx_status - extended tx staus info for rate control 1055 * 1056 * @sta: Station that the packet was transmitted for 1057 * @info: Basic tx status information 1058 * @skb: Packet skb (can be NULL if not provided by the driver) 1059 */ 1060 struct ieee80211_tx_status { 1061 struct ieee80211_sta *sta; 1062 struct ieee80211_tx_info *info; 1063 struct sk_buff *skb; 1064 }; 1065 1066 /** 1067 * struct ieee80211_scan_ies - descriptors for different blocks of IEs 1068 * 1069 * This structure is used to point to different blocks of IEs in HW scan 1070 * and scheduled scan. These blocks contain the IEs passed by userspace 1071 * and the ones generated by mac80211. 1072 * 1073 * @ies: pointers to band specific IEs. 1074 * @len: lengths of band_specific IEs. 1075 * @common_ies: IEs for all bands (especially vendor specific ones) 1076 * @common_ie_len: length of the common_ies 1077 */ 1078 struct ieee80211_scan_ies { 1079 const u8 *ies[NUM_NL80211_BANDS]; 1080 size_t len[NUM_NL80211_BANDS]; 1081 const u8 *common_ies; 1082 size_t common_ie_len; 1083 }; 1084 1085 1086 static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) 1087 { 1088 return (struct ieee80211_tx_info *)skb->cb; 1089 } 1090 1091 static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) 1092 { 1093 return (struct ieee80211_rx_status *)skb->cb; 1094 } 1095 1096 /** 1097 * ieee80211_tx_info_clear_status - clear TX status 1098 * 1099 * @info: The &struct ieee80211_tx_info to be cleared. 1100 * 1101 * When the driver passes an skb back to mac80211, it must report 1102 * a number of things in TX status. This function clears everything 1103 * in the TX status but the rate control information (it does clear 1104 * the count since you need to fill that in anyway). 1105 * 1106 * NOTE: You can only use this function if you do NOT use 1107 * info->driver_data! Use info->rate_driver_data 1108 * instead if you need only the less space that allows. 1109 */ 1110 static inline void 1111 ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) 1112 { 1113 int i; 1114 1115 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 1116 offsetof(struct ieee80211_tx_info, control.rates)); 1117 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 1118 offsetof(struct ieee80211_tx_info, driver_rates)); 1119 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); 1120 /* clear the rate counts */ 1121 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) 1122 info->status.rates[i].count = 0; 1123 1124 BUILD_BUG_ON( 1125 offsetof(struct ieee80211_tx_info, status.ack_signal) != 20); 1126 memset(&info->status.ampdu_ack_len, 0, 1127 sizeof(struct ieee80211_tx_info) - 1128 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); 1129 } 1130 1131 1132 /** 1133 * enum mac80211_rx_flags - receive flags 1134 * 1135 * These flags are used with the @flag member of &struct ieee80211_rx_status. 1136 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. 1137 * Use together with %RX_FLAG_MMIC_STRIPPED. 1138 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. 1139 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, 1140 * verification has been done by the hardware. 1141 * @RX_FLAG_IV_STRIPPED: The IV and ICV are stripped from this frame. 1142 * If this flag is set, the stack cannot do any replay detection 1143 * hence the driver or hardware will have to do that. 1144 * @RX_FLAG_PN_VALIDATED: Currently only valid for CCMP/GCMP frames, this 1145 * flag indicates that the PN was verified for replay protection. 1146 * Note that this flag is also currently only supported when a frame 1147 * is also decrypted (ie. @RX_FLAG_DECRYPTED must be set) 1148 * @RX_FLAG_DUP_VALIDATED: The driver should set this flag if it did 1149 * de-duplication by itself. 1150 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on 1151 * the frame. 1152 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on 1153 * the frame. 1154 * @RX_FLAG_MACTIME_START: The timestamp passed in the RX status (@mactime 1155 * field) is valid and contains the time the first symbol of the MPDU 1156 * was received. This is useful in monitor mode and for proper IBSS 1157 * merging. 1158 * @RX_FLAG_MACTIME_END: The timestamp passed in the RX status (@mactime 1159 * field) is valid and contains the time the last symbol of the MPDU 1160 * (including FCS) was received. 1161 * @RX_FLAG_MACTIME_PLCP_START: The timestamp passed in the RX status (@mactime 1162 * field) is valid and contains the time the SYNC preamble was received. 1163 * @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present. 1164 * Valid only for data frames (mainly A-MPDU) 1165 * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference 1166 * number (@ampdu_reference) must be populated and be a distinct number for 1167 * each A-MPDU 1168 * @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all 1169 * subframes of a single A-MPDU 1170 * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU 1171 * @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected 1172 * on this subframe 1173 * @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC 1174 * is stored in the @ampdu_delimiter_crc field) 1175 * @RX_FLAG_MIC_STRIPPED: The mic was stripped of this packet. Decryption was 1176 * done by the hardware 1177 * @RX_FLAG_ONLY_MONITOR: Report frame only to monitor interfaces without 1178 * processing it in any regular way. 1179 * This is useful if drivers offload some frames but still want to report 1180 * them for sniffing purposes. 1181 * @RX_FLAG_SKIP_MONITOR: Process and report frame to all interfaces except 1182 * monitor interfaces. 1183 * This is useful if drivers offload some frames but still want to report 1184 * them for sniffing purposes. 1185 * @RX_FLAG_AMSDU_MORE: Some drivers may prefer to report separate A-MSDU 1186 * subframes instead of a one huge frame for performance reasons. 1187 * All, but the last MSDU from an A-MSDU should have this flag set. E.g. 1188 * if an A-MSDU has 3 frames, the first 2 must have the flag set, while 1189 * the 3rd (last) one must not have this flag set. The flag is used to 1190 * deal with retransmission/duplication recovery properly since A-MSDU 1191 * subframes share the same sequence number. Reported subframes can be 1192 * either regular MSDU or singly A-MSDUs. Subframes must not be 1193 * interleaved with other frames. 1194 * @RX_FLAG_RADIOTAP_VENDOR_DATA: This frame contains vendor-specific 1195 * radiotap data in the skb->data (before the frame) as described by 1196 * the &struct ieee80211_vendor_radiotap. 1197 * @RX_FLAG_ALLOW_SAME_PN: Allow the same PN as same packet before. 1198 * This is used for AMSDU subframes which can have the same PN as 1199 * the first subframe. 1200 * @RX_FLAG_ICV_STRIPPED: The ICV is stripped from this frame. CRC checking must 1201 * be done in the hardware. 1202 * @RX_FLAG_AMPDU_EOF_BIT: Value of the EOF bit in the A-MPDU delimiter for this 1203 * frame 1204 * @RX_FLAG_AMPDU_EOF_BIT_KNOWN: The EOF value is known 1205 * @RX_FLAG_RADIOTAP_HE: HE radiotap data is present 1206 * (&struct ieee80211_radiotap_he, mac80211 will fill in 1207 * 1208 * - DATA3_DATA_MCS 1209 * - DATA3_DATA_DCM 1210 * - DATA3_CODING 1211 * - DATA5_GI 1212 * - DATA5_DATA_BW_RU_ALLOC 1213 * - DATA6_NSTS 1214 * - DATA3_STBC 1215 * 1216 * from the RX info data, so leave those zeroed when building this data) 1217 * @RX_FLAG_RADIOTAP_HE_MU: HE MU radiotap data is present 1218 * (&struct ieee80211_radiotap_he_mu) 1219 * @RX_FLAG_RADIOTAP_LSIG: L-SIG radiotap data is present 1220 * @RX_FLAG_NO_PSDU: use the frame only for radiotap reporting, with 1221 * the "0-length PSDU" field included there. The value for it is 1222 * in &struct ieee80211_rx_status. Note that if this value isn't 1223 * known the frame shouldn't be reported. 1224 */ 1225 enum mac80211_rx_flags { 1226 RX_FLAG_MMIC_ERROR = BIT(0), 1227 RX_FLAG_DECRYPTED = BIT(1), 1228 RX_FLAG_MACTIME_PLCP_START = BIT(2), 1229 RX_FLAG_MMIC_STRIPPED = BIT(3), 1230 RX_FLAG_IV_STRIPPED = BIT(4), 1231 RX_FLAG_FAILED_FCS_CRC = BIT(5), 1232 RX_FLAG_FAILED_PLCP_CRC = BIT(6), 1233 RX_FLAG_MACTIME_START = BIT(7), 1234 RX_FLAG_NO_SIGNAL_VAL = BIT(8), 1235 RX_FLAG_AMPDU_DETAILS = BIT(9), 1236 RX_FLAG_PN_VALIDATED = BIT(10), 1237 RX_FLAG_DUP_VALIDATED = BIT(11), 1238 RX_FLAG_AMPDU_LAST_KNOWN = BIT(12), 1239 RX_FLAG_AMPDU_IS_LAST = BIT(13), 1240 RX_FLAG_AMPDU_DELIM_CRC_ERROR = BIT(14), 1241 RX_FLAG_AMPDU_DELIM_CRC_KNOWN = BIT(15), 1242 RX_FLAG_MACTIME_END = BIT(16), 1243 RX_FLAG_ONLY_MONITOR = BIT(17), 1244 RX_FLAG_SKIP_MONITOR = BIT(18), 1245 RX_FLAG_AMSDU_MORE = BIT(19), 1246 RX_FLAG_RADIOTAP_VENDOR_DATA = BIT(20), 1247 RX_FLAG_MIC_STRIPPED = BIT(21), 1248 RX_FLAG_ALLOW_SAME_PN = BIT(22), 1249 RX_FLAG_ICV_STRIPPED = BIT(23), 1250 RX_FLAG_AMPDU_EOF_BIT = BIT(24), 1251 RX_FLAG_AMPDU_EOF_BIT_KNOWN = BIT(25), 1252 RX_FLAG_RADIOTAP_HE = BIT(26), 1253 RX_FLAG_RADIOTAP_HE_MU = BIT(27), 1254 RX_FLAG_RADIOTAP_LSIG = BIT(28), 1255 RX_FLAG_NO_PSDU = BIT(29), 1256 }; 1257 1258 /** 1259 * enum mac80211_rx_encoding_flags - MCS & bandwidth flags 1260 * 1261 * @RX_ENC_FLAG_SHORTPRE: Short preamble was used for this frame 1262 * @RX_ENC_FLAG_SHORT_GI: Short guard interval was used 1263 * @RX_ENC_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, 1264 * if the driver fills this value it should add 1265 * %IEEE80211_RADIOTAP_MCS_HAVE_FMT 1266 * to @hw.radiotap_mcs_details to advertise that fact. 1267 * @RX_ENC_FLAG_LDPC: LDPC was used 1268 * @RX_ENC_FLAG_STBC_MASK: STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3 1269 * @RX_ENC_FLAG_BF: packet was beamformed 1270 */ 1271 enum mac80211_rx_encoding_flags { 1272 RX_ENC_FLAG_SHORTPRE = BIT(0), 1273 RX_ENC_FLAG_SHORT_GI = BIT(2), 1274 RX_ENC_FLAG_HT_GF = BIT(3), 1275 RX_ENC_FLAG_STBC_MASK = BIT(4) | BIT(5), 1276 RX_ENC_FLAG_LDPC = BIT(6), 1277 RX_ENC_FLAG_BF = BIT(7), 1278 }; 1279 1280 #define RX_ENC_FLAG_STBC_SHIFT 4 1281 1282 enum mac80211_rx_encoding { 1283 RX_ENC_LEGACY = 0, 1284 RX_ENC_HT, 1285 RX_ENC_VHT, 1286 RX_ENC_HE, 1287 }; 1288 1289 /** 1290 * struct ieee80211_rx_status - receive status 1291 * 1292 * The low-level driver should provide this information (the subset 1293 * supported by hardware) to the 802.11 code with each received 1294 * frame, in the skb's control buffer (cb). 1295 * 1296 * @mactime: value in microseconds of the 64-bit Time Synchronization Function 1297 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. 1298 * @boottime_ns: CLOCK_BOOTTIME timestamp the frame was received at, this is 1299 * needed only for beacons and probe responses that update the scan cache. 1300 * @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use 1301 * it but can store it and pass it back to the driver for synchronisation 1302 * @band: the active band when this frame was received 1303 * @freq: frequency the radio was tuned to when receiving this frame, in MHz 1304 * This field must be set for management frames, but isn't strictly needed 1305 * for data (other) frames - for those it only affects radiotap reporting. 1306 * @signal: signal strength when receiving this frame, either in dBm, in dB or 1307 * unspecified depending on the hardware capabilities flags 1308 * @IEEE80211_HW_SIGNAL_* 1309 * @chains: bitmask of receive chains for which separate signal strength 1310 * values were filled. 1311 * @chain_signal: per-chain signal strength, in dBm (unlike @signal, doesn't 1312 * support dB or unspecified units) 1313 * @antenna: antenna used 1314 * @rate_idx: index of data rate into band's supported rates or MCS index if 1315 * HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT) 1316 * @nss: number of streams (VHT and HE only) 1317 * @flag: %RX_FLAG_\* 1318 * @encoding: &enum mac80211_rx_encoding 1319 * @bw: &enum rate_info_bw 1320 * @enc_flags: uses bits from &enum mac80211_rx_encoding_flags 1321 * @he_ru: HE RU, from &enum nl80211_he_ru_alloc 1322 * @he_gi: HE GI, from &enum nl80211_he_gi 1323 * @he_dcm: HE DCM value 1324 * @rx_flags: internal RX flags for mac80211 1325 * @ampdu_reference: A-MPDU reference number, must be a different value for 1326 * each A-MPDU but the same for each subframe within one A-MPDU 1327 * @ampdu_delimiter_crc: A-MPDU delimiter CRC 1328 * @zero_length_psdu_type: radiotap type of the 0-length PSDU 1329 */ 1330 struct ieee80211_rx_status { 1331 u64 mactime; 1332 u64 boottime_ns; 1333 u32 device_timestamp; 1334 u32 ampdu_reference; 1335 u32 flag; 1336 u16 freq; 1337 u8 enc_flags; 1338 u8 encoding:2, bw:3, he_ru:3; 1339 u8 he_gi:2, he_dcm:1; 1340 u8 rate_idx; 1341 u8 nss; 1342 u8 rx_flags; 1343 u8 band; 1344 u8 antenna; 1345 s8 signal; 1346 u8 chains; 1347 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1348 u8 ampdu_delimiter_crc; 1349 u8 zero_length_psdu_type; 1350 }; 1351 1352 /** 1353 * struct ieee80211_vendor_radiotap - vendor radiotap data information 1354 * @present: presence bitmap for this vendor namespace 1355 * (this could be extended in the future if any vendor needs more 1356 * bits, the radiotap spec does allow for that) 1357 * @align: radiotap vendor namespace alignment. This defines the needed 1358 * alignment for the @data field below, not for the vendor namespace 1359 * description itself (which has a fixed 2-byte alignment) 1360 * Must be a power of two, and be set to at least 1! 1361 * @oui: radiotap vendor namespace OUI 1362 * @subns: radiotap vendor sub namespace 1363 * @len: radiotap vendor sub namespace skip length, if alignment is done 1364 * then that's added to this, i.e. this is only the length of the 1365 * @data field. 1366 * @pad: number of bytes of padding after the @data, this exists so that 1367 * the skb data alignment can be preserved even if the data has odd 1368 * length 1369 * @data: the actual vendor namespace data 1370 * 1371 * This struct, including the vendor data, goes into the skb->data before 1372 * the 802.11 header. It's split up in mac80211 using the align/oui/subns 1373 * data. 1374 */ 1375 struct ieee80211_vendor_radiotap { 1376 u32 present; 1377 u8 align; 1378 u8 oui[3]; 1379 u8 subns; 1380 u8 pad; 1381 u16 len; 1382 u8 data[]; 1383 } __packed; 1384 1385 /** 1386 * enum ieee80211_conf_flags - configuration flags 1387 * 1388 * Flags to define PHY configuration options 1389 * 1390 * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this 1391 * to determine for example whether to calculate timestamps for packets 1392 * or not, do not use instead of filter flags! 1393 * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). 1394 * This is the power save mode defined by IEEE 802.11-2007 section 11.2, 1395 * meaning that the hardware still wakes up for beacons, is able to 1396 * transmit frames and receive the possible acknowledgment frames. 1397 * Not to be confused with hardware specific wakeup/sleep states, 1398 * driver is responsible for that. See the section "Powersave support" 1399 * for more. 1400 * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set 1401 * the driver should be prepared to handle configuration requests but 1402 * may turn the device off as much as possible. Typically, this flag will 1403 * be set when an interface is set UP but not associated or scanning, but 1404 * it can also be unset in that case when monitor interfaces are active. 1405 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main 1406 * operating channel. 1407 */ 1408 enum ieee80211_conf_flags { 1409 IEEE80211_CONF_MONITOR = (1<<0), 1410 IEEE80211_CONF_PS = (1<<1), 1411 IEEE80211_CONF_IDLE = (1<<2), 1412 IEEE80211_CONF_OFFCHANNEL = (1<<3), 1413 }; 1414 1415 1416 /** 1417 * enum ieee80211_conf_changed - denotes which configuration changed 1418 * 1419 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed 1420 * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed 1421 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed 1422 * @IEEE80211_CONF_CHANGE_POWER: the TX power changed 1423 * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed 1424 * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed 1425 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed 1426 * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed 1427 * Note that this is only valid if channel contexts are not used, 1428 * otherwise each channel context has the number of chains listed. 1429 */ 1430 enum ieee80211_conf_changed { 1431 IEEE80211_CONF_CHANGE_SMPS = BIT(1), 1432 IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), 1433 IEEE80211_CONF_CHANGE_MONITOR = BIT(3), 1434 IEEE80211_CONF_CHANGE_PS = BIT(4), 1435 IEEE80211_CONF_CHANGE_POWER = BIT(5), 1436 IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), 1437 IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), 1438 IEEE80211_CONF_CHANGE_IDLE = BIT(8), 1439 }; 1440 1441 /** 1442 * enum ieee80211_smps_mode - spatial multiplexing power save mode 1443 * 1444 * @IEEE80211_SMPS_AUTOMATIC: automatic 1445 * @IEEE80211_SMPS_OFF: off 1446 * @IEEE80211_SMPS_STATIC: static 1447 * @IEEE80211_SMPS_DYNAMIC: dynamic 1448 * @IEEE80211_SMPS_NUM_MODES: internal, don't use 1449 */ 1450 enum ieee80211_smps_mode { 1451 IEEE80211_SMPS_AUTOMATIC, 1452 IEEE80211_SMPS_OFF, 1453 IEEE80211_SMPS_STATIC, 1454 IEEE80211_SMPS_DYNAMIC, 1455 1456 /* keep last */ 1457 IEEE80211_SMPS_NUM_MODES, 1458 }; 1459 1460 /** 1461 * struct ieee80211_conf - configuration of the device 1462 * 1463 * This struct indicates how the driver shall configure the hardware. 1464 * 1465 * @flags: configuration flags defined above 1466 * 1467 * @listen_interval: listen interval in units of beacon interval 1468 * @ps_dtim_period: The DTIM period of the AP we're connected to, for use 1469 * in power saving. Power saving will not be enabled until a beacon 1470 * has been received and the DTIM period is known. 1471 * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the 1472 * powersave documentation below. This variable is valid only when 1473 * the CONF_PS flag is set. 1474 * 1475 * @power_level: requested transmit power (in dBm), backward compatibility 1476 * value only that is set to the minimum of all interfaces 1477 * 1478 * @chandef: the channel definition to tune to 1479 * @radar_enabled: whether radar detection is enabled 1480 * 1481 * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame 1482 * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, 1483 * but actually means the number of transmissions not the number of retries 1484 * @short_frame_max_tx_count: Maximum number of transmissions for a "short" 1485 * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the 1486 * number of transmissions not the number of retries 1487 * 1488 * @smps_mode: spatial multiplexing powersave mode; note that 1489 * %IEEE80211_SMPS_STATIC is used when the device is not 1490 * configured for an HT channel. 1491 * Note that this is only valid if channel contexts are not used, 1492 * otherwise each channel context has the number of chains listed. 1493 */ 1494 struct ieee80211_conf { 1495 u32 flags; 1496 int power_level, dynamic_ps_timeout; 1497 1498 u16 listen_interval; 1499 u8 ps_dtim_period; 1500 1501 u8 long_frame_max_tx_count, short_frame_max_tx_count; 1502 1503 struct cfg80211_chan_def chandef; 1504 bool radar_enabled; 1505 enum ieee80211_smps_mode smps_mode; 1506 }; 1507 1508 /** 1509 * struct ieee80211_channel_switch - holds the channel switch data 1510 * 1511 * The information provided in this structure is required for channel switch 1512 * operation. 1513 * 1514 * @timestamp: value in microseconds of the 64-bit Time Synchronization 1515 * Function (TSF) timer when the frame containing the channel switch 1516 * announcement was received. This is simply the rx.mactime parameter 1517 * the driver passed into mac80211. 1518 * @device_timestamp: arbitrary timestamp for the device, this is the 1519 * rx.device_timestamp parameter the driver passed to mac80211. 1520 * @block_tx: Indicates whether transmission must be blocked before the 1521 * scheduled channel switch, as indicated by the AP. 1522 * @chandef: the new channel to switch to 1523 * @count: the number of TBTT's until the channel switch event 1524 * @delay: maximum delay between the time the AP transmitted the last beacon in 1525 * current channel and the expected time of the first beacon in the new 1526 * channel, expressed in TU. 1527 */ 1528 struct ieee80211_channel_switch { 1529 u64 timestamp; 1530 u32 device_timestamp; 1531 bool block_tx; 1532 struct cfg80211_chan_def chandef; 1533 u8 count; 1534 u32 delay; 1535 }; 1536 1537 /** 1538 * enum ieee80211_vif_flags - virtual interface flags 1539 * 1540 * @IEEE80211_VIF_BEACON_FILTER: the device performs beacon filtering 1541 * on this virtual interface to avoid unnecessary CPU wakeups 1542 * @IEEE80211_VIF_SUPPORTS_CQM_RSSI: the device can do connection quality 1543 * monitoring on this virtual interface -- i.e. it can monitor 1544 * connection quality related parameters, such as the RSSI level and 1545 * provide notifications if configured trigger levels are reached. 1546 * @IEEE80211_VIF_SUPPORTS_UAPSD: The device can do U-APSD for this 1547 * interface. This flag should be set during interface addition, 1548 * but may be set/cleared as late as authentication to an AP. It is 1549 * only valid for managed/station mode interfaces. 1550 * @IEEE80211_VIF_GET_NOA_UPDATE: request to handle NOA attributes 1551 * and send P2P_PS notification to the driver if NOA changed, even 1552 * this is not pure P2P vif. 1553 */ 1554 enum ieee80211_vif_flags { 1555 IEEE80211_VIF_BEACON_FILTER = BIT(0), 1556 IEEE80211_VIF_SUPPORTS_CQM_RSSI = BIT(1), 1557 IEEE80211_VIF_SUPPORTS_UAPSD = BIT(2), 1558 IEEE80211_VIF_GET_NOA_UPDATE = BIT(3), 1559 }; 1560 1561 /** 1562 * struct ieee80211_vif - per-interface data 1563 * 1564 * Data in this structure is continually present for driver 1565 * use during the life of a virtual interface. 1566 * 1567 * @type: type of this virtual interface 1568 * @bss_conf: BSS configuration for this interface, either our own 1569 * or the BSS we're associated to 1570 * @addr: address of this interface 1571 * @p2p: indicates whether this AP or STA interface is a p2p 1572 * interface, i.e. a GO or p2p-sta respectively 1573 * @csa_active: marks whether a channel switch is going on. Internally it is 1574 * write-protected by sdata_lock and local->mtx so holding either is fine 1575 * for read access. 1576 * @mu_mimo_owner: indicates interface owns MU-MIMO capability 1577 * @driver_flags: flags/capabilities the driver has for this interface, 1578 * these need to be set (or cleared) when the interface is added 1579 * or, if supported by the driver, the interface type is changed 1580 * at runtime, mac80211 will never touch this field 1581 * @hw_queue: hardware queue for each AC 1582 * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only 1583 * @chanctx_conf: The channel context this interface is assigned to, or %NULL 1584 * when it is not assigned. This pointer is RCU-protected due to the TX 1585 * path needing to access it; even though the netdev carrier will always 1586 * be off when it is %NULL there can still be races and packets could be 1587 * processed after it switches back to %NULL. 1588 * @debugfs_dir: debugfs dentry, can be used by drivers to create own per 1589 * interface debug files. Note that it will be NULL for the virtual 1590 * monitor interface (if that is requested.) 1591 * @probe_req_reg: probe requests should be reported to mac80211 for this 1592 * interface. 1593 * @drv_priv: data area for driver use, will always be aligned to 1594 * sizeof(void \*). 1595 * @txq: the multicast data TX queue (if driver uses the TXQ abstraction) 1596 * @txqs_stopped: per AC flag to indicate that intermediate TXQs are stopped, 1597 * protected by fq->lock. 1598 */ 1599 struct ieee80211_vif { 1600 enum nl80211_iftype type; 1601 struct ieee80211_bss_conf bss_conf; 1602 u8 addr[ETH_ALEN] __aligned(2); 1603 bool p2p; 1604 bool csa_active; 1605 bool mu_mimo_owner; 1606 1607 u8 cab_queue; 1608 u8 hw_queue[IEEE80211_NUM_ACS]; 1609 1610 struct ieee80211_txq *txq; 1611 1612 struct ieee80211_chanctx_conf __rcu *chanctx_conf; 1613 1614 u32 driver_flags; 1615 1616 #ifdef CONFIG_MAC80211_DEBUGFS 1617 struct dentry *debugfs_dir; 1618 #endif 1619 1620 unsigned int probe_req_reg; 1621 1622 bool txqs_stopped[IEEE80211_NUM_ACS]; 1623 1624 /* must be last */ 1625 u8 drv_priv[0] __aligned(sizeof(void *)); 1626 }; 1627 1628 static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) 1629 { 1630 #ifdef CONFIG_MAC80211_MESH 1631 return vif->type == NL80211_IFTYPE_MESH_POINT; 1632 #endif 1633 return false; 1634 } 1635 1636 /** 1637 * wdev_to_ieee80211_vif - return a vif struct from a wdev 1638 * @wdev: the wdev to get the vif for 1639 * 1640 * This can be used by mac80211 drivers with direct cfg80211 APIs 1641 * (like the vendor commands) that get a wdev. 1642 * 1643 * Note that this function may return %NULL if the given wdev isn't 1644 * associated with a vif that the driver knows about (e.g. monitor 1645 * or AP_VLAN interfaces.) 1646 */ 1647 struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev); 1648 1649 /** 1650 * ieee80211_vif_to_wdev - return a wdev struct from a vif 1651 * @vif: the vif to get the wdev for 1652 * 1653 * This can be used by mac80211 drivers with direct cfg80211 APIs 1654 * (like the vendor commands) that needs to get the wdev for a vif. 1655 * 1656 * Note that this function may return %NULL if the given wdev isn't 1657 * associated with a vif that the driver knows about (e.g. monitor 1658 * or AP_VLAN interfaces.) 1659 */ 1660 struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif); 1661 1662 /** 1663 * enum ieee80211_key_flags - key flags 1664 * 1665 * These flags are used for communication about keys between the driver 1666 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. 1667 * 1668 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the 1669 * driver to indicate that it requires IV generation for this 1670 * particular key. Setting this flag does not necessarily mean that SKBs 1671 * will have sufficient tailroom for ICV or MIC. 1672 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by 1673 * the driver for a TKIP key if it requires Michael MIC 1674 * generation in software. 1675 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates 1676 * that the key is pairwise rather then a shared key. 1677 * @IEEE80211_KEY_FLAG_SW_MGMT_TX: This flag should be set by the driver for a 1678 * CCMP/GCMP key if it requires CCMP/GCMP encryption of management frames 1679 * (MFP) to be done in software. 1680 * @IEEE80211_KEY_FLAG_PUT_IV_SPACE: This flag should be set by the driver 1681 * if space should be prepared for the IV, but the IV 1682 * itself should not be generated. Do not set together with 1683 * @IEEE80211_KEY_FLAG_GENERATE_IV on the same key. Setting this flag does 1684 * not necessarily mean that SKBs will have sufficient tailroom for ICV or 1685 * MIC. 1686 * @IEEE80211_KEY_FLAG_RX_MGMT: This key will be used to decrypt received 1687 * management frames. The flag can help drivers that have a hardware 1688 * crypto implementation that doesn't deal with management frames 1689 * properly by allowing them to not upload the keys to hardware and 1690 * fall back to software crypto. Note that this flag deals only with 1691 * RX, if your crypto engine can't deal with TX you can also set the 1692 * %IEEE80211_KEY_FLAG_SW_MGMT_TX flag to encrypt such frames in SW. 1693 * @IEEE80211_KEY_FLAG_GENERATE_IV_MGMT: This flag should be set by the 1694 * driver for a CCMP/GCMP key to indicate that is requires IV generation 1695 * only for managment frames (MFP). 1696 * @IEEE80211_KEY_FLAG_RESERVE_TAILROOM: This flag should be set by the 1697 * driver for a key to indicate that sufficient tailroom must always 1698 * be reserved for ICV or MIC, even when HW encryption is enabled. 1699 * @IEEE80211_KEY_FLAG_PUT_MIC_SPACE: This flag should be set by the driver for 1700 * a TKIP key if it only requires MIC space. Do not set together with 1701 * @IEEE80211_KEY_FLAG_GENERATE_MMIC on the same key. 1702 * @IEEE80211_KEY_FLAG_NO_AUTO_TX: Key needs explicit Tx activation. 1703 */ 1704 enum ieee80211_key_flags { 1705 IEEE80211_KEY_FLAG_GENERATE_IV_MGMT = BIT(0), 1706 IEEE80211_KEY_FLAG_GENERATE_IV = BIT(1), 1707 IEEE80211_KEY_FLAG_GENERATE_MMIC = BIT(2), 1708 IEEE80211_KEY_FLAG_PAIRWISE = BIT(3), 1709 IEEE80211_KEY_FLAG_SW_MGMT_TX = BIT(4), 1710 IEEE80211_KEY_FLAG_PUT_IV_SPACE = BIT(5), 1711 IEEE80211_KEY_FLAG_RX_MGMT = BIT(6), 1712 IEEE80211_KEY_FLAG_RESERVE_TAILROOM = BIT(7), 1713 IEEE80211_KEY_FLAG_PUT_MIC_SPACE = BIT(8), 1714 IEEE80211_KEY_FLAG_NO_AUTO_TX = BIT(9), 1715 }; 1716 1717 /** 1718 * struct ieee80211_key_conf - key information 1719 * 1720 * This key information is given by mac80211 to the driver by 1721 * the set_key() callback in &struct ieee80211_ops. 1722 * 1723 * @hw_key_idx: To be set by the driver, this is the key index the driver 1724 * wants to be given when a frame is transmitted and needs to be 1725 * encrypted in hardware. 1726 * @cipher: The key's cipher suite selector. 1727 * @tx_pn: PN used for TX keys, may be used by the driver as well if it 1728 * needs to do software PN assignment by itself (e.g. due to TSO) 1729 * @flags: key flags, see &enum ieee80211_key_flags. 1730 * @keyidx: the key index (0-3) 1731 * @keylen: key material length 1732 * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) 1733 * data block: 1734 * - Temporal Encryption Key (128 bits) 1735 * - Temporal Authenticator Tx MIC Key (64 bits) 1736 * - Temporal Authenticator Rx MIC Key (64 bits) 1737 * @icv_len: The ICV length for this key type 1738 * @iv_len: The IV length for this key type 1739 */ 1740 struct ieee80211_key_conf { 1741 atomic64_t tx_pn; 1742 u32 cipher; 1743 u8 icv_len; 1744 u8 iv_len; 1745 u8 hw_key_idx; 1746 s8 keyidx; 1747 u16 flags; 1748 u8 keylen; 1749 u8 key[0]; 1750 }; 1751 1752 #define IEEE80211_MAX_PN_LEN 16 1753 1754 #define TKIP_PN_TO_IV16(pn) ((u16)(pn & 0xffff)) 1755 #define TKIP_PN_TO_IV32(pn) ((u32)((pn >> 16) & 0xffffffff)) 1756 1757 /** 1758 * struct ieee80211_key_seq - key sequence counter 1759 * 1760 * @tkip: TKIP data, containing IV32 and IV16 in host byte order 1761 * @ccmp: PN data, most significant byte first (big endian, 1762 * reverse order than in packet) 1763 * @aes_cmac: PN data, most significant byte first (big endian, 1764 * reverse order than in packet) 1765 * @aes_gmac: PN data, most significant byte first (big endian, 1766 * reverse order than in packet) 1767 * @gcmp: PN data, most significant byte first (big endian, 1768 * reverse order than in packet) 1769 * @hw: data for HW-only (e.g. cipher scheme) keys 1770 */ 1771 struct ieee80211_key_seq { 1772 union { 1773 struct { 1774 u32 iv32; 1775 u16 iv16; 1776 } tkip; 1777 struct { 1778 u8 pn[6]; 1779 } ccmp; 1780 struct { 1781 u8 pn[6]; 1782 } aes_cmac; 1783 struct { 1784 u8 pn[6]; 1785 } aes_gmac; 1786 struct { 1787 u8 pn[6]; 1788 } gcmp; 1789 struct { 1790 u8 seq[IEEE80211_MAX_PN_LEN]; 1791 u8 seq_len; 1792 } hw; 1793 }; 1794 }; 1795 1796 /** 1797 * struct ieee80211_cipher_scheme - cipher scheme 1798 * 1799 * This structure contains a cipher scheme information defining 1800 * the secure packet crypto handling. 1801 * 1802 * @cipher: a cipher suite selector 1803 * @iftype: a cipher iftype bit mask indicating an allowed cipher usage 1804 * @hdr_len: a length of a security header used the cipher 1805 * @pn_len: a length of a packet number in the security header 1806 * @pn_off: an offset of pn from the beginning of the security header 1807 * @key_idx_off: an offset of key index byte in the security header 1808 * @key_idx_mask: a bit mask of key_idx bits 1809 * @key_idx_shift: a bit shift needed to get key_idx 1810 * key_idx value calculation: 1811 * (sec_header_base[key_idx_off] & key_idx_mask) >> key_idx_shift 1812 * @mic_len: a mic length in bytes 1813 */ 1814 struct ieee80211_cipher_scheme { 1815 u32 cipher; 1816 u16 iftype; 1817 u8 hdr_len; 1818 u8 pn_len; 1819 u8 pn_off; 1820 u8 key_idx_off; 1821 u8 key_idx_mask; 1822 u8 key_idx_shift; 1823 u8 mic_len; 1824 }; 1825 1826 /** 1827 * enum set_key_cmd - key command 1828 * 1829 * Used with the set_key() callback in &struct ieee80211_ops, this 1830 * indicates whether a key is being removed or added. 1831 * 1832 * @SET_KEY: a key is set 1833 * @DISABLE_KEY: a key must be disabled 1834 */ 1835 enum set_key_cmd { 1836 SET_KEY, DISABLE_KEY, 1837 }; 1838 1839 /** 1840 * enum ieee80211_sta_state - station state 1841 * 1842 * @IEEE80211_STA_NOTEXIST: station doesn't exist at all, 1843 * this is a special state for add/remove transitions 1844 * @IEEE80211_STA_NONE: station exists without special state 1845 * @IEEE80211_STA_AUTH: station is authenticated 1846 * @IEEE80211_STA_ASSOC: station is associated 1847 * @IEEE80211_STA_AUTHORIZED: station is authorized (802.1X) 1848 */ 1849 enum ieee80211_sta_state { 1850 /* NOTE: These need to be ordered correctly! */ 1851 IEEE80211_STA_NOTEXIST, 1852 IEEE80211_STA_NONE, 1853 IEEE80211_STA_AUTH, 1854 IEEE80211_STA_ASSOC, 1855 IEEE80211_STA_AUTHORIZED, 1856 }; 1857 1858 /** 1859 * enum ieee80211_sta_rx_bandwidth - station RX bandwidth 1860 * @IEEE80211_STA_RX_BW_20: station can only receive 20 MHz 1861 * @IEEE80211_STA_RX_BW_40: station can receive up to 40 MHz 1862 * @IEEE80211_STA_RX_BW_80: station can receive up to 80 MHz 1863 * @IEEE80211_STA_RX_BW_160: station can receive up to 160 MHz 1864 * (including 80+80 MHz) 1865 * 1866 * Implementation note: 20 must be zero to be initialized 1867 * correctly, the values must be sorted. 1868 */ 1869 enum ieee80211_sta_rx_bandwidth { 1870 IEEE80211_STA_RX_BW_20 = 0, 1871 IEEE80211_STA_RX_BW_40, 1872 IEEE80211_STA_RX_BW_80, 1873 IEEE80211_STA_RX_BW_160, 1874 }; 1875 1876 /** 1877 * struct ieee80211_sta_rates - station rate selection table 1878 * 1879 * @rcu_head: RCU head used for freeing the table on update 1880 * @rate: transmit rates/flags to be used by default. 1881 * Overriding entries per-packet is possible by using cb tx control. 1882 */ 1883 struct ieee80211_sta_rates { 1884 struct rcu_head rcu_head; 1885 struct { 1886 s8 idx; 1887 u8 count; 1888 u8 count_cts; 1889 u8 count_rts; 1890 u16 flags; 1891 } rate[IEEE80211_TX_RATE_TABLE_SIZE]; 1892 }; 1893 1894 /** 1895 * struct ieee80211_sta_txpwr - station txpower configuration 1896 * 1897 * Used to configure txpower for station. 1898 * 1899 * @power: indicates the tx power, in dBm, to be used when sending data frames 1900 * to the STA. 1901 * @type: In particular if TPC %type is NL80211_TX_POWER_LIMITED then tx power 1902 * will be less than or equal to specified from userspace, whereas if TPC 1903 * %type is NL80211_TX_POWER_AUTOMATIC then it indicates default tx power. 1904 * NL80211_TX_POWER_FIXED is not a valid configuration option for 1905 * per peer TPC. 1906 */ 1907 struct ieee80211_sta_txpwr { 1908 s16 power; 1909 enum nl80211_tx_power_setting type; 1910 }; 1911 1912 /** 1913 * struct ieee80211_sta - station table entry 1914 * 1915 * A station table entry represents a station we are possibly 1916 * communicating with. Since stations are RCU-managed in 1917 * mac80211, any ieee80211_sta pointer you get access to must 1918 * either be protected by rcu_read_lock() explicitly or implicitly, 1919 * or you must take good care to not use such a pointer after a 1920 * call to your sta_remove callback that removed it. 1921 * 1922 * @addr: MAC address 1923 * @aid: AID we assigned to the station if we're an AP 1924 * @supp_rates: Bitmap of supported rates (per band) 1925 * @ht_cap: HT capabilities of this STA; restricted to our own capabilities 1926 * @vht_cap: VHT capabilities of this STA; restricted to our own capabilities 1927 * @he_cap: HE capabilities of this STA 1928 * @max_rx_aggregation_subframes: maximal amount of frames in a single AMPDU 1929 * that this station is allowed to transmit to us. 1930 * Can be modified by driver. 1931 * @wme: indicates whether the STA supports QoS/WME (if local devices does, 1932 * otherwise always false) 1933 * @drv_priv: data area for driver use, will always be aligned to 1934 * sizeof(void \*), size is determined in hw information. 1935 * @uapsd_queues: bitmap of queues configured for uapsd. Only valid 1936 * if wme is supported. The bits order is like in 1937 * IEEE80211_WMM_IE_STA_QOSINFO_AC_*. 1938 * @max_sp: max Service Period. Only valid if wme is supported. 1939 * @bandwidth: current bandwidth the station can receive with 1940 * @rx_nss: in HT/VHT, the maximum number of spatial streams the 1941 * station can receive at the moment, changed by operating mode 1942 * notifications and capabilities. The value is only valid after 1943 * the station moves to associated state. 1944 * @smps_mode: current SMPS mode (off, static or dynamic) 1945 * @rates: rate control selection table 1946 * @tdls: indicates whether the STA is a TDLS peer 1947 * @tdls_initiator: indicates the STA is an initiator of the TDLS link. Only 1948 * valid if the STA is a TDLS peer in the first place. 1949 * @mfp: indicates whether the STA uses management frame protection or not. 1950 * @max_amsdu_subframes: indicates the maximal number of MSDUs in a single 1951 * A-MSDU. Taken from the Extended Capabilities element. 0 means 1952 * unlimited. 1953 * @support_p2p_ps: indicates whether the STA supports P2P PS mechanism or not. 1954 * @max_rc_amsdu_len: Maximum A-MSDU size in bytes recommended by rate control. 1955 * @max_tid_amsdu_len: Maximum A-MSDU size in bytes for this TID 1956 * @txq: per-TID data TX queues (if driver uses the TXQ abstraction); note that 1957 * the last entry (%IEEE80211_NUM_TIDS) is used for non-data frames 1958 */ 1959 struct ieee80211_sta { 1960 u32 supp_rates[NUM_NL80211_BANDS]; 1961 u8 addr[ETH_ALEN]; 1962 u16 aid; 1963 struct ieee80211_sta_ht_cap ht_cap; 1964 struct ieee80211_sta_vht_cap vht_cap; 1965 struct ieee80211_sta_he_cap he_cap; 1966 u16 max_rx_aggregation_subframes; 1967 bool wme; 1968 u8 uapsd_queues; 1969 u8 max_sp; 1970 u8 rx_nss; 1971 enum ieee80211_sta_rx_bandwidth bandwidth; 1972 enum ieee80211_smps_mode smps_mode; 1973 struct ieee80211_sta_rates __rcu *rates; 1974 bool tdls; 1975 bool tdls_initiator; 1976 bool mfp; 1977 u8 max_amsdu_subframes; 1978 1979 /** 1980 * @max_amsdu_len: 1981 * indicates the maximal length of an A-MSDU in bytes. 1982 * This field is always valid for packets with a VHT preamble. 1983 * For packets with a HT preamble, additional limits apply: 1984 * 1985 * * If the skb is transmitted as part of a BA agreement, the 1986 * A-MSDU maximal size is min(max_amsdu_len, 4065) bytes. 1987 * * If the skb is not part of a BA aggreement, the A-MSDU maximal 1988 * size is min(max_amsdu_len, 7935) bytes. 1989 * 1990 * Both additional HT limits must be enforced by the low level 1991 * driver. This is defined by the spec (IEEE 802.11-2012 section 1992 * 8.3.2.2 NOTE 2). 1993 */ 1994 u16 max_amsdu_len; 1995 bool support_p2p_ps; 1996 u16 max_rc_amsdu_len; 1997 u16 max_tid_amsdu_len[IEEE80211_NUM_TIDS]; 1998 struct ieee80211_sta_txpwr txpwr; 1999 2000 struct ieee80211_txq *txq[IEEE80211_NUM_TIDS + 1]; 2001 2002 /* must be last */ 2003 u8 drv_priv[0] __aligned(sizeof(void *)); 2004 }; 2005 2006 /** 2007 * enum sta_notify_cmd - sta notify command 2008 * 2009 * Used with the sta_notify() callback in &struct ieee80211_ops, this 2010 * indicates if an associated station made a power state transition. 2011 * 2012 * @STA_NOTIFY_SLEEP: a station is now sleeping 2013 * @STA_NOTIFY_AWAKE: a sleeping station woke up 2014 */ 2015 enum sta_notify_cmd { 2016 STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, 2017 }; 2018 2019 /** 2020 * struct ieee80211_tx_control - TX control data 2021 * 2022 * @sta: station table entry, this sta pointer may be NULL and 2023 * it is not allowed to copy the pointer, due to RCU. 2024 */ 2025 struct ieee80211_tx_control { 2026 struct ieee80211_sta *sta; 2027 }; 2028 2029 /** 2030 * struct ieee80211_txq - Software intermediate tx queue 2031 * 2032 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2033 * @sta: station table entry, %NULL for per-vif queue 2034 * @tid: the TID for this queue (unused for per-vif queue), 2035 * %IEEE80211_NUM_TIDS for non-data (if enabled) 2036 * @ac: the AC for this queue 2037 * @drv_priv: driver private area, sized by hw->txq_data_size 2038 * 2039 * The driver can obtain packets from this queue by calling 2040 * ieee80211_tx_dequeue(). 2041 */ 2042 struct ieee80211_txq { 2043 struct ieee80211_vif *vif; 2044 struct ieee80211_sta *sta; 2045 u8 tid; 2046 u8 ac; 2047 2048 /* must be last */ 2049 u8 drv_priv[0] __aligned(sizeof(void *)); 2050 }; 2051 2052 /** 2053 * enum ieee80211_hw_flags - hardware flags 2054 * 2055 * These flags are used to indicate hardware capabilities to 2056 * the stack. Generally, flags here should have their meaning 2057 * done in a way that the simplest hardware doesn't need setting 2058 * any particular flags. There are some exceptions to this rule, 2059 * however, so you are advised to review these flags carefully. 2060 * 2061 * @IEEE80211_HW_HAS_RATE_CONTROL: 2062 * The hardware or firmware includes rate control, and cannot be 2063 * controlled by the stack. As such, no rate control algorithm 2064 * should be instantiated, and the TX rate reported to userspace 2065 * will be taken from the TX status instead of the rate control 2066 * algorithm. 2067 * Note that this requires that the driver implement a number of 2068 * callbacks so it has the correct information, it needs to have 2069 * the @set_rts_threshold callback and must look at the BSS config 2070 * @use_cts_prot for G/N protection, @use_short_slot for slot 2071 * timing in 2.4 GHz and @use_short_preamble for preambles for 2072 * CCK frames. 2073 * 2074 * @IEEE80211_HW_RX_INCLUDES_FCS: 2075 * Indicates that received frames passed to the stack include 2076 * the FCS at the end. 2077 * 2078 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: 2079 * Some wireless LAN chipsets buffer broadcast/multicast frames 2080 * for power saving stations in the hardware/firmware and others 2081 * rely on the host system for such buffering. This option is used 2082 * to configure the IEEE 802.11 upper layer to buffer broadcast and 2083 * multicast frames when there are power saving stations so that 2084 * the driver can fetch them with ieee80211_get_buffered_bc(). 2085 * 2086 * @IEEE80211_HW_SIGNAL_UNSPEC: 2087 * Hardware can provide signal values but we don't know its units. We 2088 * expect values between 0 and @max_signal. 2089 * If possible please provide dB or dBm instead. 2090 * 2091 * @IEEE80211_HW_SIGNAL_DBM: 2092 * Hardware gives signal values in dBm, decibel difference from 2093 * one milliwatt. This is the preferred method since it is standardized 2094 * between different devices. @max_signal does not need to be set. 2095 * 2096 * @IEEE80211_HW_SPECTRUM_MGMT: 2097 * Hardware supports spectrum management defined in 802.11h 2098 * Measurement, Channel Switch, Quieting, TPC 2099 * 2100 * @IEEE80211_HW_AMPDU_AGGREGATION: 2101 * Hardware supports 11n A-MPDU aggregation. 2102 * 2103 * @IEEE80211_HW_SUPPORTS_PS: 2104 * Hardware has power save support (i.e. can go to sleep). 2105 * 2106 * @IEEE80211_HW_PS_NULLFUNC_STACK: 2107 * Hardware requires nullfunc frame handling in stack, implies 2108 * stack support for dynamic PS. 2109 * 2110 * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: 2111 * Hardware has support for dynamic PS. 2112 * 2113 * @IEEE80211_HW_MFP_CAPABLE: 2114 * Hardware supports management frame protection (MFP, IEEE 802.11w). 2115 * 2116 * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: 2117 * Hardware can provide ack status reports of Tx frames to 2118 * the stack. 2119 * 2120 * @IEEE80211_HW_CONNECTION_MONITOR: 2121 * The hardware performs its own connection monitoring, including 2122 * periodic keep-alives to the AP and probing the AP on beacon loss. 2123 * 2124 * @IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC: 2125 * This device needs to get data from beacon before association (i.e. 2126 * dtim_period). 2127 * 2128 * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports 2129 * per-station GTKs as used by IBSS RSN or during fast transition. If 2130 * the device doesn't support per-station GTKs, but can be asked not 2131 * to decrypt group addressed frames, then IBSS RSN support is still 2132 * possible but software crypto will be used. Advertise the wiphy flag 2133 * only in that case. 2134 * 2135 * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device 2136 * autonomously manages the PS status of connected stations. When 2137 * this flag is set mac80211 will not trigger PS mode for connected 2138 * stations based on the PM bit of incoming frames. 2139 * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure 2140 * the PS mode of connected stations. 2141 * 2142 * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session 2143 * setup strictly in HW. mac80211 should not attempt to do this in 2144 * software. 2145 * 2146 * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of 2147 * a virtual monitor interface when monitor interfaces are the only 2148 * active interfaces. 2149 * 2150 * @IEEE80211_HW_NO_AUTO_VIF: The driver would like for no wlanX to 2151 * be created. It is expected user-space will create vifs as 2152 * desired (and thus have them named as desired). 2153 * 2154 * @IEEE80211_HW_SW_CRYPTO_CONTROL: The driver wants to control which of the 2155 * crypto algorithms can be done in software - so don't automatically 2156 * try to fall back to it if hardware crypto fails, but do so only if 2157 * the driver returns 1. This also forces the driver to advertise its 2158 * supported cipher suites. 2159 * 2160 * @IEEE80211_HW_SUPPORT_FAST_XMIT: The driver/hardware supports fast-xmit, 2161 * this currently requires only the ability to calculate the duration 2162 * for frames. 2163 * 2164 * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface 2165 * queue mapping in order to use different queues (not just one per AC) 2166 * for different virtual interfaces. See the doc section on HW queue 2167 * control for more details. 2168 * 2169 * @IEEE80211_HW_SUPPORTS_RC_TABLE: The driver supports using a rate 2170 * selection table provided by the rate control algorithm. 2171 * 2172 * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any 2173 * P2P Interface. This will be honoured even if more than one interface 2174 * is supported. 2175 * 2176 * @IEEE80211_HW_TIMING_BEACON_ONLY: Use sync timing from beacon frames 2177 * only, to allow getting TBTT of a DTIM beacon. 2178 * 2179 * @IEEE80211_HW_SUPPORTS_HT_CCK_RATES: Hardware supports mixing HT/CCK rates 2180 * and can cope with CCK rates in an aggregation session (e.g. by not 2181 * using aggregation for such frames.) 2182 * 2183 * @IEEE80211_HW_CHANCTX_STA_CSA: Support 802.11h based channel-switch (CSA) 2184 * for a single active channel while using channel contexts. When support 2185 * is not enabled the default action is to disconnect when getting the 2186 * CSA frame. 2187 * 2188 * @IEEE80211_HW_SUPPORTS_CLONED_SKBS: The driver will never modify the payload 2189 * or tailroom of TX skbs without copying them first. 2190 * 2191 * @IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS: The HW supports scanning on all bands 2192 * in one command, mac80211 doesn't have to run separate scans per band. 2193 * 2194 * @IEEE80211_HW_TDLS_WIDER_BW: The device/driver supports wider bandwidth 2195 * than then BSS bandwidth for a TDLS link on the base channel. 2196 * 2197 * @IEEE80211_HW_SUPPORTS_AMSDU_IN_AMPDU: The driver supports receiving A-MSDUs 2198 * within A-MPDU. 2199 * 2200 * @IEEE80211_HW_BEACON_TX_STATUS: The device/driver provides TX status 2201 * for sent beacons. 2202 * 2203 * @IEEE80211_HW_NEEDS_UNIQUE_STA_ADDR: Hardware (or driver) requires that each 2204 * station has a unique address, i.e. each station entry can be identified 2205 * by just its MAC address; this prevents, for example, the same station 2206 * from connecting to two virtual AP interfaces at the same time. 2207 * 2208 * @IEEE80211_HW_SUPPORTS_REORDERING_BUFFER: Hardware (or driver) manages the 2209 * reordering buffer internally, guaranteeing mac80211 receives frames in 2210 * order and does not need to manage its own reorder buffer or BA session 2211 * timeout. 2212 * 2213 * @IEEE80211_HW_USES_RSS: The device uses RSS and thus requires parallel RX, 2214 * which implies using per-CPU station statistics. 2215 * 2216 * @IEEE80211_HW_TX_AMSDU: Hardware (or driver) supports software aggregated 2217 * A-MSDU frames. Requires software tx queueing and fast-xmit support. 2218 * When not using minstrel/minstrel_ht rate control, the driver must 2219 * limit the maximum A-MSDU size based on the current tx rate by setting 2220 * max_rc_amsdu_len in struct ieee80211_sta. 2221 * 2222 * @IEEE80211_HW_TX_FRAG_LIST: Hardware (or driver) supports sending frag_list 2223 * skbs, needed for zero-copy software A-MSDU. 2224 * 2225 * @IEEE80211_HW_REPORTS_LOW_ACK: The driver (or firmware) reports low ack event 2226 * by ieee80211_report_low_ack() based on its own algorithm. For such 2227 * drivers, mac80211 packet loss mechanism will not be triggered and driver 2228 * is completely depending on firmware event for station kickout. 2229 * 2230 * @IEEE80211_HW_SUPPORTS_TX_FRAG: Hardware does fragmentation by itself. 2231 * The stack will not do fragmentation. 2232 * The callback for @set_frag_threshold should be set as well. 2233 * 2234 * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on 2235 * TDLS links. 2236 * 2237 * @IEEE80211_HW_DEAUTH_NEED_MGD_TX_PREP: The driver requires the 2238 * mgd_prepare_tx() callback to be called before transmission of a 2239 * deauthentication frame in case the association was completed but no 2240 * beacon was heard. This is required in multi-channel scenarios, where the 2241 * virtual interface might not be given air time for the transmission of 2242 * the frame, as it is not synced with the AP/P2P GO yet, and thus the 2243 * deauthentication frame might not be transmitted. 2244 * 2245 * @IEEE80211_HW_DOESNT_SUPPORT_QOS_NDP: The driver (or firmware) doesn't 2246 * support QoS NDP for AP probing - that's most likely a driver bug. 2247 * 2248 * @IEEE80211_HW_BUFF_MMPDU_TXQ: use the TXQ for bufferable MMPDUs, this of 2249 * course requires the driver to use TXQs to start with. 2250 * 2251 * @IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW: (Hardware) rate control supports VHT 2252 * extended NSS BW (dot11VHTExtendedNSSBWCapable). This flag will be set if 2253 * the selected rate control algorithm sets %RATE_CTRL_CAPA_VHT_EXT_NSS_BW 2254 * but if the rate control is built-in then it must be set by the driver. 2255 * See also the documentation for that flag. 2256 * 2257 * @IEEE80211_HW_STA_MMPDU_TXQ: use the extra non-TID per-station TXQ for all 2258 * MMPDUs on station interfaces. This of course requires the driver to use 2259 * TXQs to start with. 2260 * 2261 * @IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN: Driver does not report accurate A-MPDU 2262 * length in tx status information 2263 * 2264 * @IEEE80211_HW_SUPPORTS_MULTI_BSSID: Hardware supports multi BSSID 2265 * 2266 * @IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID: Hardware supports multi BSSID 2267 * only for HE APs. Applies if @IEEE80211_HW_SUPPORTS_MULTI_BSSID is set. 2268 * 2269 * @IEEE80211_HW_EXT_KEY_ID_NATIVE: Driver and hardware are supporting Extended 2270 * Key ID and can handle two unicast keys per station for Rx and Tx. 2271 * 2272 * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays 2273 */ 2274 enum ieee80211_hw_flags { 2275 IEEE80211_HW_HAS_RATE_CONTROL, 2276 IEEE80211_HW_RX_INCLUDES_FCS, 2277 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING, 2278 IEEE80211_HW_SIGNAL_UNSPEC, 2279 IEEE80211_HW_SIGNAL_DBM, 2280 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC, 2281 IEEE80211_HW_SPECTRUM_MGMT, 2282 IEEE80211_HW_AMPDU_AGGREGATION, 2283 IEEE80211_HW_SUPPORTS_PS, 2284 IEEE80211_HW_PS_NULLFUNC_STACK, 2285 IEEE80211_HW_SUPPORTS_DYNAMIC_PS, 2286 IEEE80211_HW_MFP_CAPABLE, 2287 IEEE80211_HW_WANT_MONITOR_VIF, 2288 IEEE80211_HW_NO_AUTO_VIF, 2289 IEEE80211_HW_SW_CRYPTO_CONTROL, 2290 IEEE80211_HW_SUPPORT_FAST_XMIT, 2291 IEEE80211_HW_REPORTS_TX_ACK_STATUS, 2292 IEEE80211_HW_CONNECTION_MONITOR, 2293 IEEE80211_HW_QUEUE_CONTROL, 2294 IEEE80211_HW_SUPPORTS_PER_STA_GTK, 2295 IEEE80211_HW_AP_LINK_PS, 2296 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW, 2297 IEEE80211_HW_SUPPORTS_RC_TABLE, 2298 IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF, 2299 IEEE80211_HW_TIMING_BEACON_ONLY, 2300 IEEE80211_HW_SUPPORTS_HT_CCK_RATES, 2301 IEEE80211_HW_CHANCTX_STA_CSA, 2302 IEEE80211_HW_SUPPORTS_CLONED_SKBS, 2303 IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS, 2304 IEEE80211_HW_TDLS_WIDER_BW, 2305 IEEE80211_HW_SUPPORTS_AMSDU_IN_AMPDU, 2306 IEEE80211_HW_BEACON_TX_STATUS, 2307 IEEE80211_HW_NEEDS_UNIQUE_STA_ADDR, 2308 IEEE80211_HW_SUPPORTS_REORDERING_BUFFER, 2309 IEEE80211_HW_USES_RSS, 2310 IEEE80211_HW_TX_AMSDU, 2311 IEEE80211_HW_TX_FRAG_LIST, 2312 IEEE80211_HW_REPORTS_LOW_ACK, 2313 IEEE80211_HW_SUPPORTS_TX_FRAG, 2314 IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA, 2315 IEEE80211_HW_DEAUTH_NEED_MGD_TX_PREP, 2316 IEEE80211_HW_DOESNT_SUPPORT_QOS_NDP, 2317 IEEE80211_HW_BUFF_MMPDU_TXQ, 2318 IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, 2319 IEEE80211_HW_STA_MMPDU_TXQ, 2320 IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN, 2321 IEEE80211_HW_SUPPORTS_MULTI_BSSID, 2322 IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID, 2323 IEEE80211_HW_EXT_KEY_ID_NATIVE, 2324 2325 /* keep last, obviously */ 2326 NUM_IEEE80211_HW_FLAGS 2327 }; 2328 2329 /** 2330 * struct ieee80211_hw - hardware information and state 2331 * 2332 * This structure contains the configuration and hardware 2333 * information for an 802.11 PHY. 2334 * 2335 * @wiphy: This points to the &struct wiphy allocated for this 2336 * 802.11 PHY. You must fill in the @perm_addr and @dev 2337 * members of this structure using SET_IEEE80211_DEV() 2338 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported 2339 * bands (with channels, bitrates) are registered here. 2340 * 2341 * @conf: &struct ieee80211_conf, device configuration, don't use. 2342 * 2343 * @priv: pointer to private area that was allocated for driver use 2344 * along with this structure. 2345 * 2346 * @flags: hardware flags, see &enum ieee80211_hw_flags. 2347 * 2348 * @extra_tx_headroom: headroom to reserve in each transmit skb 2349 * for use by the driver (e.g. for transmit headers.) 2350 * 2351 * @extra_beacon_tailroom: tailroom to reserve in each beacon tx skb. 2352 * Can be used by drivers to add extra IEs. 2353 * 2354 * @max_signal: Maximum value for signal (rssi) in RX information, used 2355 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB 2356 * 2357 * @max_listen_interval: max listen interval in units of beacon interval 2358 * that HW supports 2359 * 2360 * @queues: number of available hardware transmit queues for 2361 * data packets. WMM/QoS requires at least four, these 2362 * queues need to have configurable access parameters. 2363 * 2364 * @rate_control_algorithm: rate control algorithm for this hardware. 2365 * If unset (NULL), the default algorithm will be used. Must be 2366 * set before calling ieee80211_register_hw(). 2367 * 2368 * @vif_data_size: size (in bytes) of the drv_priv data area 2369 * within &struct ieee80211_vif. 2370 * @sta_data_size: size (in bytes) of the drv_priv data area 2371 * within &struct ieee80211_sta. 2372 * @chanctx_data_size: size (in bytes) of the drv_priv data area 2373 * within &struct ieee80211_chanctx_conf. 2374 * @txq_data_size: size (in bytes) of the drv_priv data area 2375 * within @struct ieee80211_txq. 2376 * 2377 * @max_rates: maximum number of alternate rate retry stages the hw 2378 * can handle. 2379 * @max_report_rates: maximum number of alternate rate retry stages 2380 * the hw can report back. 2381 * @max_rate_tries: maximum number of tries for each stage 2382 * 2383 * @max_rx_aggregation_subframes: maximum buffer size (number of 2384 * sub-frames) to be used for A-MPDU block ack receiver 2385 * aggregation. 2386 * This is only relevant if the device has restrictions on the 2387 * number of subframes, if it relies on mac80211 to do reordering 2388 * it shouldn't be set. 2389 * 2390 * @max_tx_aggregation_subframes: maximum number of subframes in an 2391 * aggregate an HT/HE device will transmit. In HT AddBA we'll 2392 * advertise a constant value of 64 as some older APs crash if 2393 * the window size is smaller (an example is LinkSys WRT120N 2394 * with FW v1.0.07 build 002 Jun 18 2012). 2395 * For AddBA to HE capable peers this value will be used. 2396 * 2397 * @max_tx_fragments: maximum number of tx buffers per (A)-MSDU, sum 2398 * of 1 + skb_shinfo(skb)->nr_frags for each skb in the frag_list. 2399 * 2400 * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX 2401 * (if %IEEE80211_HW_QUEUE_CONTROL is set) 2402 * 2403 * @radiotap_mcs_details: lists which MCS information can the HW 2404 * reports, by default it is set to _MCS, _GI and _BW but doesn't 2405 * include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_\* values, only 2406 * adding _BW is supported today. 2407 * 2408 * @radiotap_vht_details: lists which VHT MCS information the HW reports, 2409 * the default is _GI | _BANDWIDTH. 2410 * Use the %IEEE80211_RADIOTAP_VHT_KNOWN_\* values. 2411 * 2412 * @radiotap_he: HE radiotap validity flags 2413 * 2414 * @radiotap_timestamp: Information for the radiotap timestamp field; if the 2415 * @units_pos member is set to a non-negative value then the timestamp 2416 * field will be added and populated from the &struct ieee80211_rx_status 2417 * device_timestamp. 2418 * @radiotap_timestamp.units_pos: Must be set to a combination of a 2419 * IEEE80211_RADIOTAP_TIMESTAMP_UNIT_* and a 2420 * IEEE80211_RADIOTAP_TIMESTAMP_SPOS_* value. 2421 * @radiotap_timestamp.accuracy: If non-negative, fills the accuracy in the 2422 * radiotap field and the accuracy known flag will be set. 2423 * 2424 * @netdev_features: netdev features to be set in each netdev created 2425 * from this HW. Note that not all features are usable with mac80211, 2426 * other features will be rejected during HW registration. 2427 * 2428 * @uapsd_queues: This bitmap is included in (re)association frame to indicate 2429 * for each access category if it is uAPSD trigger-enabled and delivery- 2430 * enabled. Use IEEE80211_WMM_IE_STA_QOSINFO_AC_* to set this bitmap. 2431 * Each bit corresponds to different AC. Value '1' in specific bit means 2432 * that corresponding AC is both trigger- and delivery-enabled. '0' means 2433 * neither enabled. 2434 * 2435 * @uapsd_max_sp_len: maximum number of total buffered frames the WMM AP may 2436 * deliver to a WMM STA during any Service Period triggered by the WMM STA. 2437 * Use IEEE80211_WMM_IE_STA_QOSINFO_SP_* for correct values. 2438 * 2439 * @n_cipher_schemes: a size of an array of cipher schemes definitions. 2440 * @cipher_schemes: a pointer to an array of cipher scheme definitions 2441 * supported by HW. 2442 * @max_nan_de_entries: maximum number of NAN DE functions supported by the 2443 * device. 2444 * 2445 * @tx_sk_pacing_shift: Pacing shift to set on TCP sockets when frames from 2446 * them are encountered. The default should typically not be changed, 2447 * unless the driver has good reasons for needing more buffers. 2448 * 2449 * @weight_multiplier: Driver specific airtime weight multiplier used while 2450 * refilling deficit of each TXQ. 2451 */ 2452 struct ieee80211_hw { 2453 struct ieee80211_conf conf; 2454 struct wiphy *wiphy; 2455 const char *rate_control_algorithm; 2456 void *priv; 2457 unsigned long flags[BITS_TO_LONGS(NUM_IEEE80211_HW_FLAGS)]; 2458 unsigned int extra_tx_headroom; 2459 unsigned int extra_beacon_tailroom; 2460 int vif_data_size; 2461 int sta_data_size; 2462 int chanctx_data_size; 2463 int txq_data_size; 2464 u16 queues; 2465 u16 max_listen_interval; 2466 s8 max_signal; 2467 u8 max_rates; 2468 u8 max_report_rates; 2469 u8 max_rate_tries; 2470 u16 max_rx_aggregation_subframes; 2471 u16 max_tx_aggregation_subframes; 2472 u8 max_tx_fragments; 2473 u8 offchannel_tx_hw_queue; 2474 u8 radiotap_mcs_details; 2475 u16 radiotap_vht_details; 2476 struct { 2477 int units_pos; 2478 s16 accuracy; 2479 } radiotap_timestamp; 2480 netdev_features_t netdev_features; 2481 u8 uapsd_queues; 2482 u8 uapsd_max_sp_len; 2483 u8 n_cipher_schemes; 2484 const struct ieee80211_cipher_scheme *cipher_schemes; 2485 u8 max_nan_de_entries; 2486 u8 tx_sk_pacing_shift; 2487 u8 weight_multiplier; 2488 }; 2489 2490 static inline bool _ieee80211_hw_check(struct ieee80211_hw *hw, 2491 enum ieee80211_hw_flags flg) 2492 { 2493 return test_bit(flg, hw->flags); 2494 } 2495 #define ieee80211_hw_check(hw, flg) _ieee80211_hw_check(hw, IEEE80211_HW_##flg) 2496 2497 static inline void _ieee80211_hw_set(struct ieee80211_hw *hw, 2498 enum ieee80211_hw_flags flg) 2499 { 2500 return __set_bit(flg, hw->flags); 2501 } 2502 #define ieee80211_hw_set(hw, flg) _ieee80211_hw_set(hw, IEEE80211_HW_##flg) 2503 2504 /** 2505 * struct ieee80211_scan_request - hw scan request 2506 * 2507 * @ies: pointers different parts of IEs (in req.ie) 2508 * @req: cfg80211 request. 2509 */ 2510 struct ieee80211_scan_request { 2511 struct ieee80211_scan_ies ies; 2512 2513 /* Keep last */ 2514 struct cfg80211_scan_request req; 2515 }; 2516 2517 /** 2518 * struct ieee80211_tdls_ch_sw_params - TDLS channel switch parameters 2519 * 2520 * @sta: peer this TDLS channel-switch request/response came from 2521 * @chandef: channel referenced in a TDLS channel-switch request 2522 * @action_code: see &enum ieee80211_tdls_actioncode 2523 * @status: channel-switch response status 2524 * @timestamp: time at which the frame was received 2525 * @switch_time: switch-timing parameter received in the frame 2526 * @switch_timeout: switch-timing parameter received in the frame 2527 * @tmpl_skb: TDLS switch-channel response template 2528 * @ch_sw_tm_ie: offset of the channel-switch timing IE inside @tmpl_skb 2529 */ 2530 struct ieee80211_tdls_ch_sw_params { 2531 struct ieee80211_sta *sta; 2532 struct cfg80211_chan_def *chandef; 2533 u8 action_code; 2534 u32 status; 2535 u32 timestamp; 2536 u16 switch_time; 2537 u16 switch_timeout; 2538 struct sk_buff *tmpl_skb; 2539 u32 ch_sw_tm_ie; 2540 }; 2541 2542 /** 2543 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy 2544 * 2545 * @wiphy: the &struct wiphy which we want to query 2546 * 2547 * mac80211 drivers can use this to get to their respective 2548 * &struct ieee80211_hw. Drivers wishing to get to their own private 2549 * structure can then access it via hw->priv. Note that mac802111 drivers should 2550 * not use wiphy_priv() to try to get their private driver structure as this 2551 * is already used internally by mac80211. 2552 * 2553 * Return: The mac80211 driver hw struct of @wiphy. 2554 */ 2555 struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); 2556 2557 /** 2558 * SET_IEEE80211_DEV - set device for 802.11 hardware 2559 * 2560 * @hw: the &struct ieee80211_hw to set the device for 2561 * @dev: the &struct device of this 802.11 device 2562 */ 2563 static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) 2564 { 2565 set_wiphy_dev(hw->wiphy, dev); 2566 } 2567 2568 /** 2569 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware 2570 * 2571 * @hw: the &struct ieee80211_hw to set the MAC address for 2572 * @addr: the address to set 2573 */ 2574 static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, const u8 *addr) 2575 { 2576 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); 2577 } 2578 2579 static inline struct ieee80211_rate * 2580 ieee80211_get_tx_rate(const struct ieee80211_hw *hw, 2581 const struct ieee80211_tx_info *c) 2582 { 2583 if (WARN_ON_ONCE(c->control.rates[0].idx < 0)) 2584 return NULL; 2585 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; 2586 } 2587 2588 static inline struct ieee80211_rate * 2589 ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, 2590 const struct ieee80211_tx_info *c) 2591 { 2592 if (c->control.rts_cts_rate_idx < 0) 2593 return NULL; 2594 return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; 2595 } 2596 2597 static inline struct ieee80211_rate * 2598 ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, 2599 const struct ieee80211_tx_info *c, int idx) 2600 { 2601 if (c->control.rates[idx + 1].idx < 0) 2602 return NULL; 2603 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; 2604 } 2605 2606 /** 2607 * ieee80211_free_txskb - free TX skb 2608 * @hw: the hardware 2609 * @skb: the skb 2610 * 2611 * Free a transmit skb. Use this funtion when some failure 2612 * to transmit happened and thus status cannot be reported. 2613 */ 2614 void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb); 2615 2616 /** 2617 * DOC: Hardware crypto acceleration 2618 * 2619 * mac80211 is capable of taking advantage of many hardware 2620 * acceleration designs for encryption and decryption operations. 2621 * 2622 * The set_key() callback in the &struct ieee80211_ops for a given 2623 * device is called to enable hardware acceleration of encryption and 2624 * decryption. The callback takes a @sta parameter that will be NULL 2625 * for default keys or keys used for transmission only, or point to 2626 * the station information for the peer for individual keys. 2627 * Multiple transmission keys with the same key index may be used when 2628 * VLANs are configured for an access point. 2629 * 2630 * When transmitting, the TX control data will use the @hw_key_idx 2631 * selected by the driver by modifying the &struct ieee80211_key_conf 2632 * pointed to by the @key parameter to the set_key() function. 2633 * 2634 * The set_key() call for the %SET_KEY command should return 0 if 2635 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be 2636 * added; if you return 0 then hw_key_idx must be assigned to the 2637 * hardware key index, you are free to use the full u8 range. 2638 * 2639 * Note that in the case that the @IEEE80211_HW_SW_CRYPTO_CONTROL flag is 2640 * set, mac80211 will not automatically fall back to software crypto if 2641 * enabling hardware crypto failed. The set_key() call may also return the 2642 * value 1 to permit this specific key/algorithm to be done in software. 2643 * 2644 * When the cmd is %DISABLE_KEY then it must succeed. 2645 * 2646 * Note that it is permissible to not decrypt a frame even if a key 2647 * for it has been uploaded to hardware, the stack will not make any 2648 * decision based on whether a key has been uploaded or not but rather 2649 * based on the receive flags. 2650 * 2651 * The &struct ieee80211_key_conf structure pointed to by the @key 2652 * parameter is guaranteed to be valid until another call to set_key() 2653 * removes it, but it can only be used as a cookie to differentiate 2654 * keys. 2655 * 2656 * In TKIP some HW need to be provided a phase 1 key, for RX decryption 2657 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key 2658 * handler. 2659 * The update_tkip_key() call updates the driver with the new phase 1 key. 2660 * This happens every time the iv16 wraps around (every 65536 packets). The 2661 * set_key() call will happen only once for each key (unless the AP did 2662 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is 2663 * provided by update_tkip_key only. The trigger that makes mac80211 call this 2664 * handler is software decryption with wrap around of iv16. 2665 * 2666 * The set_default_unicast_key() call updates the default WEP key index 2667 * configured to the hardware for WEP encryption type. This is required 2668 * for devices that support offload of data packets (e.g. ARP responses). 2669 * 2670 * Mac80211 drivers should set the @NL80211_EXT_FEATURE_CAN_REPLACE_PTK0 flag 2671 * when they are able to replace in-use PTK keys according to to following 2672 * requirements: 2673 * 1) They do not hand over frames decrypted with the old key to 2674 mac80211 once the call to set_key() with command %DISABLE_KEY has been 2675 completed when also setting @IEEE80211_KEY_FLAG_GENERATE_IV for any key, 2676 2) either drop or continue to use the old key for any outgoing frames queued 2677 at the time of the key deletion (including re-transmits), 2678 3) never send out a frame queued prior to the set_key() %SET_KEY command 2679 encrypted with the new key and 2680 4) never send out a frame unencrypted when it should be encrypted. 2681 Mac80211 will not queue any new frames for a deleted key to the driver. 2682 */ 2683 2684 /** 2685 * DOC: Powersave support 2686 * 2687 * mac80211 has support for various powersave implementations. 2688 * 2689 * First, it can support hardware that handles all powersaving by itself, 2690 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware 2691 * flag. In that case, it will be told about the desired powersave mode 2692 * with the %IEEE80211_CONF_PS flag depending on the association status. 2693 * The hardware must take care of sending nullfunc frames when necessary, 2694 * i.e. when entering and leaving powersave mode. The hardware is required 2695 * to look at the AID in beacons and signal to the AP that it woke up when 2696 * it finds traffic directed to it. 2697 * 2698 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in 2699 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused 2700 * with hardware wakeup and sleep states. Driver is responsible for waking 2701 * up the hardware before issuing commands to the hardware and putting it 2702 * back to sleep at appropriate times. 2703 * 2704 * When PS is enabled, hardware needs to wakeup for beacons and receive the 2705 * buffered multicast/broadcast frames after the beacon. Also it must be 2706 * possible to send frames and receive the acknowledment frame. 2707 * 2708 * Other hardware designs cannot send nullfunc frames by themselves and also 2709 * need software support for parsing the TIM bitmap. This is also supported 2710 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and 2711 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still 2712 * required to pass up beacons. The hardware is still required to handle 2713 * waking up for multicast traffic; if it cannot the driver must handle that 2714 * as best as it can, mac80211 is too slow to do that. 2715 * 2716 * Dynamic powersave is an extension to normal powersave in which the 2717 * hardware stays awake for a user-specified period of time after sending a 2718 * frame so that reply frames need not be buffered and therefore delayed to 2719 * the next wakeup. It's compromise of getting good enough latency when 2720 * there's data traffic and still saving significantly power in idle 2721 * periods. 2722 * 2723 * Dynamic powersave is simply supported by mac80211 enabling and disabling 2724 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS 2725 * flag and mac80211 will handle everything automatically. Additionally, 2726 * hardware having support for the dynamic PS feature may set the 2727 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support 2728 * dynamic PS mode itself. The driver needs to look at the 2729 * @dynamic_ps_timeout hardware configuration value and use it that value 2730 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable 2731 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS 2732 * enabled whenever user has enabled powersave. 2733 * 2734 * Driver informs U-APSD client support by enabling 2735 * %IEEE80211_VIF_SUPPORTS_UAPSD flag. The mode is configured through the 2736 * uapsd parameter in conf_tx() operation. Hardware needs to send the QoS 2737 * Nullfunc frames and stay awake until the service period has ended. To 2738 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames 2739 * from that AC are transmitted with powersave enabled. 2740 * 2741 * Note: U-APSD client mode is not yet supported with 2742 * %IEEE80211_HW_PS_NULLFUNC_STACK. 2743 */ 2744 2745 /** 2746 * DOC: Beacon filter support 2747 * 2748 * Some hardware have beacon filter support to reduce host cpu wakeups 2749 * which will reduce system power consumption. It usually works so that 2750 * the firmware creates a checksum of the beacon but omits all constantly 2751 * changing elements (TSF, TIM etc). Whenever the checksum changes the 2752 * beacon is forwarded to the host, otherwise it will be just dropped. That 2753 * way the host will only receive beacons where some relevant information 2754 * (for example ERP protection or WMM settings) have changed. 2755 * 2756 * Beacon filter support is advertised with the %IEEE80211_VIF_BEACON_FILTER 2757 * interface capability. The driver needs to enable beacon filter support 2758 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When 2759 * power save is enabled, the stack will not check for beacon loss and the 2760 * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). 2761 * 2762 * The time (or number of beacons missed) until the firmware notifies the 2763 * driver of a beacon loss event (which in turn causes the driver to call 2764 * ieee80211_beacon_loss()) should be configurable and will be controlled 2765 * by mac80211 and the roaming algorithm in the future. 2766 * 2767 * Since there may be constantly changing information elements that nothing 2768 * in the software stack cares about, we will, in the future, have mac80211 2769 * tell the driver which information elements are interesting in the sense 2770 * that we want to see changes in them. This will include 2771 * 2772 * - a list of information element IDs 2773 * - a list of OUIs for the vendor information element 2774 * 2775 * Ideally, the hardware would filter out any beacons without changes in the 2776 * requested elements, but if it cannot support that it may, at the expense 2777 * of some efficiency, filter out only a subset. For example, if the device 2778 * doesn't support checking for OUIs it should pass up all changes in all 2779 * vendor information elements. 2780 * 2781 * Note that change, for the sake of simplification, also includes information 2782 * elements appearing or disappearing from the beacon. 2783 * 2784 * Some hardware supports an "ignore list" instead, just make sure nothing 2785 * that was requested is on the ignore list, and include commonly changing 2786 * information element IDs in the ignore list, for example 11 (BSS load) and 2787 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, 2788 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility 2789 * it could also include some currently unused IDs. 2790 * 2791 * 2792 * In addition to these capabilities, hardware should support notifying the 2793 * host of changes in the beacon RSSI. This is relevant to implement roaming 2794 * when no traffic is flowing (when traffic is flowing we see the RSSI of 2795 * the received data packets). This can consist in notifying the host when 2796 * the RSSI changes significantly or when it drops below or rises above 2797 * configurable thresholds. In the future these thresholds will also be 2798 * configured by mac80211 (which gets them from userspace) to implement 2799 * them as the roaming algorithm requires. 2800 * 2801 * If the hardware cannot implement this, the driver should ask it to 2802 * periodically pass beacon frames to the host so that software can do the 2803 * signal strength threshold checking. 2804 */ 2805 2806 /** 2807 * DOC: Spatial multiplexing power save 2808 * 2809 * SMPS (Spatial multiplexing power save) is a mechanism to conserve 2810 * power in an 802.11n implementation. For details on the mechanism 2811 * and rationale, please refer to 802.11 (as amended by 802.11n-2009) 2812 * "11.2.3 SM power save". 2813 * 2814 * The mac80211 implementation is capable of sending action frames 2815 * to update the AP about the station's SMPS mode, and will instruct 2816 * the driver to enter the specific mode. It will also announce the 2817 * requested SMPS mode during the association handshake. Hardware 2818 * support for this feature is required, and can be indicated by 2819 * hardware flags. 2820 * 2821 * The default mode will be "automatic", which nl80211/cfg80211 2822 * defines to be dynamic SMPS in (regular) powersave, and SMPS 2823 * turned off otherwise. 2824 * 2825 * To support this feature, the driver must set the appropriate 2826 * hardware support flags, and handle the SMPS flag to the config() 2827 * operation. It will then with this mechanism be instructed to 2828 * enter the requested SMPS mode while associated to an HT AP. 2829 */ 2830 2831 /** 2832 * DOC: Frame filtering 2833 * 2834 * mac80211 requires to see many management frames for proper 2835 * operation, and users may want to see many more frames when 2836 * in monitor mode. However, for best CPU usage and power consumption, 2837 * having as few frames as possible percolate through the stack is 2838 * desirable. Hence, the hardware should filter as much as possible. 2839 * 2840 * To achieve this, mac80211 uses filter flags (see below) to tell 2841 * the driver's configure_filter() function which frames should be 2842 * passed to mac80211 and which should be filtered out. 2843 * 2844 * Before configure_filter() is invoked, the prepare_multicast() 2845 * callback is invoked with the parameters @mc_count and @mc_list 2846 * for the combined multicast address list of all virtual interfaces. 2847 * It's use is optional, and it returns a u64 that is passed to 2848 * configure_filter(). Additionally, configure_filter() has the 2849 * arguments @changed_flags telling which flags were changed and 2850 * @total_flags with the new flag states. 2851 * 2852 * If your device has no multicast address filters your driver will 2853 * need to check both the %FIF_ALLMULTI flag and the @mc_count 2854 * parameter to see whether multicast frames should be accepted 2855 * or dropped. 2856 * 2857 * All unsupported flags in @total_flags must be cleared. 2858 * Hardware does not support a flag if it is incapable of _passing_ 2859 * the frame to the stack. Otherwise the driver must ignore 2860 * the flag, but not clear it. 2861 * You must _only_ clear the flag (announce no support for the 2862 * flag to mac80211) if you are not able to pass the packet type 2863 * to the stack (so the hardware always filters it). 2864 * So for example, you should clear @FIF_CONTROL, if your hardware 2865 * always filters control frames. If your hardware always passes 2866 * control frames to the kernel and is incapable of filtering them, 2867 * you do _not_ clear the @FIF_CONTROL flag. 2868 * This rule applies to all other FIF flags as well. 2869 */ 2870 2871 /** 2872 * DOC: AP support for powersaving clients 2873 * 2874 * In order to implement AP and P2P GO modes, mac80211 has support for 2875 * client powersaving, both "legacy" PS (PS-Poll/null data) and uAPSD. 2876 * There currently is no support for sAPSD. 2877 * 2878 * There is one assumption that mac80211 makes, namely that a client 2879 * will not poll with PS-Poll and trigger with uAPSD at the same time. 2880 * Both are supported, and both can be used by the same client, but 2881 * they can't be used concurrently by the same client. This simplifies 2882 * the driver code. 2883 * 2884 * The first thing to keep in mind is that there is a flag for complete 2885 * driver implementation: %IEEE80211_HW_AP_LINK_PS. If this flag is set, 2886 * mac80211 expects the driver to handle most of the state machine for 2887 * powersaving clients and will ignore the PM bit in incoming frames. 2888 * Drivers then use ieee80211_sta_ps_transition() to inform mac80211 of 2889 * stations' powersave transitions. In this mode, mac80211 also doesn't 2890 * handle PS-Poll/uAPSD. 2891 * 2892 * In the mode without %IEEE80211_HW_AP_LINK_PS, mac80211 will check the 2893 * PM bit in incoming frames for client powersave transitions. When a 2894 * station goes to sleep, we will stop transmitting to it. There is, 2895 * however, a race condition: a station might go to sleep while there is 2896 * data buffered on hardware queues. If the device has support for this 2897 * it will reject frames, and the driver should give the frames back to 2898 * mac80211 with the %IEEE80211_TX_STAT_TX_FILTERED flag set which will 2899 * cause mac80211 to retry the frame when the station wakes up. The 2900 * driver is also notified of powersave transitions by calling its 2901 * @sta_notify callback. 2902 * 2903 * When the station is asleep, it has three choices: it can wake up, 2904 * it can PS-Poll, or it can possibly start a uAPSD service period. 2905 * Waking up is implemented by simply transmitting all buffered (and 2906 * filtered) frames to the station. This is the easiest case. When 2907 * the station sends a PS-Poll or a uAPSD trigger frame, mac80211 2908 * will inform the driver of this with the @allow_buffered_frames 2909 * callback; this callback is optional. mac80211 will then transmit 2910 * the frames as usual and set the %IEEE80211_TX_CTL_NO_PS_BUFFER 2911 * on each frame. The last frame in the service period (or the only 2912 * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to 2913 * indicate that it ends the service period; as this frame must have 2914 * TX status report it also sets %IEEE80211_TX_CTL_REQ_TX_STATUS. 2915 * When TX status is reported for this frame, the service period is 2916 * marked has having ended and a new one can be started by the peer. 2917 * 2918 * Additionally, non-bufferable MMPDUs can also be transmitted by 2919 * mac80211 with the %IEEE80211_TX_CTL_NO_PS_BUFFER set in them. 2920 * 2921 * Another race condition can happen on some devices like iwlwifi 2922 * when there are frames queued for the station and it wakes up 2923 * or polls; the frames that are already queued could end up being 2924 * transmitted first instead, causing reordering and/or wrong 2925 * processing of the EOSP. The cause is that allowing frames to be 2926 * transmitted to a certain station is out-of-band communication to 2927 * the device. To allow this problem to be solved, the driver can 2928 * call ieee80211_sta_block_awake() if frames are buffered when it 2929 * is notified that the station went to sleep. When all these frames 2930 * have been filtered (see above), it must call the function again 2931 * to indicate that the station is no longer blocked. 2932 * 2933 * If the driver buffers frames in the driver for aggregation in any 2934 * way, it must use the ieee80211_sta_set_buffered() call when it is 2935 * notified of the station going to sleep to inform mac80211 of any 2936 * TIDs that have frames buffered. Note that when a station wakes up 2937 * this information is reset (hence the requirement to call it when 2938 * informed of the station going to sleep). Then, when a service 2939 * period starts for any reason, @release_buffered_frames is called 2940 * with the number of frames to be released and which TIDs they are 2941 * to come from. In this case, the driver is responsible for setting 2942 * the EOSP (for uAPSD) and MORE_DATA bits in the released frames, 2943 * to help the @more_data parameter is passed to tell the driver if 2944 * there is more data on other TIDs -- the TIDs to release frames 2945 * from are ignored since mac80211 doesn't know how many frames the 2946 * buffers for those TIDs contain. 2947 * 2948 * If the driver also implement GO mode, where absence periods may 2949 * shorten service periods (or abort PS-Poll responses), it must 2950 * filter those response frames except in the case of frames that 2951 * are buffered in the driver -- those must remain buffered to avoid 2952 * reordering. Because it is possible that no frames are released 2953 * in this case, the driver must call ieee80211_sta_eosp() 2954 * to indicate to mac80211 that the service period ended anyway. 2955 * 2956 * Finally, if frames from multiple TIDs are released from mac80211 2957 * but the driver might reorder them, it must clear & set the flags 2958 * appropriately (only the last frame may have %IEEE80211_TX_STATUS_EOSP) 2959 * and also take care of the EOSP and MORE_DATA bits in the frame. 2960 * The driver may also use ieee80211_sta_eosp() in this case. 2961 * 2962 * Note that if the driver ever buffers frames other than QoS-data 2963 * frames, it must take care to never send a non-QoS-data frame as 2964 * the last frame in a service period, adding a QoS-nulldata frame 2965 * after a non-QoS-data frame if needed. 2966 */ 2967 2968 /** 2969 * DOC: HW queue control 2970 * 2971 * Before HW queue control was introduced, mac80211 only had a single static 2972 * assignment of per-interface AC software queues to hardware queues. This 2973 * was problematic for a few reasons: 2974 * 1) off-channel transmissions might get stuck behind other frames 2975 * 2) multiple virtual interfaces couldn't be handled correctly 2976 * 3) after-DTIM frames could get stuck behind other frames 2977 * 2978 * To solve this, hardware typically uses multiple different queues for all 2979 * the different usages, and this needs to be propagated into mac80211 so it 2980 * won't have the same problem with the software queues. 2981 * 2982 * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability 2983 * flag that tells it that the driver implements its own queue control. To do 2984 * so, the driver will set up the various queues in each &struct ieee80211_vif 2985 * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will 2986 * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and 2987 * if necessary will queue the frame on the right software queue that mirrors 2988 * the hardware queue. 2989 * Additionally, the driver has to then use these HW queue IDs for the queue 2990 * management functions (ieee80211_stop_queue() et al.) 2991 * 2992 * The driver is free to set up the queue mappings as needed, multiple virtual 2993 * interfaces may map to the same hardware queues if needed. The setup has to 2994 * happen during add_interface or change_interface callbacks. For example, a 2995 * driver supporting station+station and station+AP modes might decide to have 2996 * 10 hardware queues to handle different scenarios: 2997 * 2998 * 4 AC HW queues for 1st vif: 0, 1, 2, 3 2999 * 4 AC HW queues for 2nd vif: 4, 5, 6, 7 3000 * after-DTIM queue for AP: 8 3001 * off-channel queue: 9 3002 * 3003 * It would then set up the hardware like this: 3004 * hw.offchannel_tx_hw_queue = 9 3005 * 3006 * and the first virtual interface that is added as follows: 3007 * vif.hw_queue[IEEE80211_AC_VO] = 0 3008 * vif.hw_queue[IEEE80211_AC_VI] = 1 3009 * vif.hw_queue[IEEE80211_AC_BE] = 2 3010 * vif.hw_queue[IEEE80211_AC_BK] = 3 3011 * vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE 3012 * and the second virtual interface with 4-7. 3013 * 3014 * If queue 6 gets full, for example, mac80211 would only stop the second 3015 * virtual interface's BE queue since virtual interface queues are per AC. 3016 * 3017 * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE 3018 * whenever the queue is not used (i.e. the interface is not in AP mode) if the 3019 * queue could potentially be shared since mac80211 will look at cab_queue when 3020 * a queue is stopped/woken even if the interface is not in AP mode. 3021 */ 3022 3023 /** 3024 * enum ieee80211_filter_flags - hardware filter flags 3025 * 3026 * These flags determine what the filter in hardware should be 3027 * programmed to let through and what should not be passed to the 3028 * stack. It is always safe to pass more frames than requested, 3029 * but this has negative impact on power consumption. 3030 * 3031 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested 3032 * by the user or if the hardware is not capable of filtering by 3033 * multicast address. 3034 * 3035 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the 3036 * %RX_FLAG_FAILED_FCS_CRC for them) 3037 * 3038 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set 3039 * the %RX_FLAG_FAILED_PLCP_CRC for them 3040 * 3041 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate 3042 * to the hardware that it should not filter beacons or probe responses 3043 * by BSSID. Filtering them can greatly reduce the amount of processing 3044 * mac80211 needs to do and the amount of CPU wakeups, so you should 3045 * honour this flag if possible. 3046 * 3047 * @FIF_CONTROL: pass control frames (except for PS Poll) addressed to this 3048 * station 3049 * 3050 * @FIF_OTHER_BSS: pass frames destined to other BSSes 3051 * 3052 * @FIF_PSPOLL: pass PS Poll frames 3053 * 3054 * @FIF_PROBE_REQ: pass probe request frames 3055 */ 3056 enum ieee80211_filter_flags { 3057 FIF_ALLMULTI = 1<<1, 3058 FIF_FCSFAIL = 1<<2, 3059 FIF_PLCPFAIL = 1<<3, 3060 FIF_BCN_PRBRESP_PROMISC = 1<<4, 3061 FIF_CONTROL = 1<<5, 3062 FIF_OTHER_BSS = 1<<6, 3063 FIF_PSPOLL = 1<<7, 3064 FIF_PROBE_REQ = 1<<8, 3065 }; 3066 3067 /** 3068 * enum ieee80211_ampdu_mlme_action - A-MPDU actions 3069 * 3070 * These flags are used with the ampdu_action() callback in 3071 * &struct ieee80211_ops to indicate which action is needed. 3072 * 3073 * Note that drivers MUST be able to deal with a TX aggregation 3074 * session being stopped even before they OK'ed starting it by 3075 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer 3076 * might receive the addBA frame and send a delBA right away! 3077 * 3078 * @IEEE80211_AMPDU_RX_START: start RX aggregation 3079 * @IEEE80211_AMPDU_RX_STOP: stop RX aggregation 3080 * @IEEE80211_AMPDU_TX_START: start TX aggregation 3081 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational 3082 * @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting 3083 * queued packets, now unaggregated. After all packets are transmitted the 3084 * driver has to call ieee80211_stop_tx_ba_cb_irqsafe(). 3085 * @IEEE80211_AMPDU_TX_STOP_FLUSH: stop TX aggregation and flush all packets, 3086 * called when the station is removed. There's no need or reason to call 3087 * ieee80211_stop_tx_ba_cb_irqsafe() in this case as mac80211 assumes the 3088 * session is gone and removes the station. 3089 * @IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: called when TX aggregation is stopped 3090 * but the driver hasn't called ieee80211_stop_tx_ba_cb_irqsafe() yet and 3091 * now the connection is dropped and the station will be removed. Drivers 3092 * should clean up and drop remaining packets when this is called. 3093 */ 3094 enum ieee80211_ampdu_mlme_action { 3095 IEEE80211_AMPDU_RX_START, 3096 IEEE80211_AMPDU_RX_STOP, 3097 IEEE80211_AMPDU_TX_START, 3098 IEEE80211_AMPDU_TX_STOP_CONT, 3099 IEEE80211_AMPDU_TX_STOP_FLUSH, 3100 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT, 3101 IEEE80211_AMPDU_TX_OPERATIONAL, 3102 }; 3103 3104 /** 3105 * struct ieee80211_ampdu_params - AMPDU action parameters 3106 * 3107 * @action: the ampdu action, value from %ieee80211_ampdu_mlme_action. 3108 * @sta: peer of this AMPDU session 3109 * @tid: tid of the BA session 3110 * @ssn: start sequence number of the session. TX/RX_STOP can pass 0. When 3111 * action is set to %IEEE80211_AMPDU_RX_START the driver passes back the 3112 * actual ssn value used to start the session and writes the value here. 3113 * @buf_size: reorder buffer size (number of subframes). Valid only when the 3114 * action is set to %IEEE80211_AMPDU_RX_START or 3115 * %IEEE80211_AMPDU_TX_OPERATIONAL 3116 * @amsdu: indicates the peer's ability to receive A-MSDU within A-MPDU. 3117 * valid when the action is set to %IEEE80211_AMPDU_TX_OPERATIONAL 3118 * @timeout: BA session timeout. Valid only when the action is set to 3119 * %IEEE80211_AMPDU_RX_START 3120 */ 3121 struct ieee80211_ampdu_params { 3122 enum ieee80211_ampdu_mlme_action action; 3123 struct ieee80211_sta *sta; 3124 u16 tid; 3125 u16 ssn; 3126 u16 buf_size; 3127 bool amsdu; 3128 u16 timeout; 3129 }; 3130 3131 /** 3132 * enum ieee80211_frame_release_type - frame release reason 3133 * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll 3134 * @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to 3135 * frame received on trigger-enabled AC 3136 */ 3137 enum ieee80211_frame_release_type { 3138 IEEE80211_FRAME_RELEASE_PSPOLL, 3139 IEEE80211_FRAME_RELEASE_UAPSD, 3140 }; 3141 3142 /** 3143 * enum ieee80211_rate_control_changed - flags to indicate what changed 3144 * 3145 * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit 3146 * to this station changed. The actual bandwidth is in the station 3147 * information -- for HT20/40 the IEEE80211_HT_CAP_SUP_WIDTH_20_40 3148 * flag changes, for HT and VHT the bandwidth field changes. 3149 * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed. 3150 * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer 3151 * changed (in IBSS mode) due to discovering more information about 3152 * the peer. 3153 * @IEEE80211_RC_NSS_CHANGED: N_SS (number of spatial streams) was changed 3154 * by the peer 3155 */ 3156 enum ieee80211_rate_control_changed { 3157 IEEE80211_RC_BW_CHANGED = BIT(0), 3158 IEEE80211_RC_SMPS_CHANGED = BIT(1), 3159 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 3160 IEEE80211_RC_NSS_CHANGED = BIT(3), 3161 }; 3162 3163 /** 3164 * enum ieee80211_roc_type - remain on channel type 3165 * 3166 * With the support for multi channel contexts and multi channel operations, 3167 * remain on channel operations might be limited/deferred/aborted by other 3168 * flows/operations which have higher priority (and vise versa). 3169 * Specifying the ROC type can be used by devices to prioritize the ROC 3170 * operations compared to other operations/flows. 3171 * 3172 * @IEEE80211_ROC_TYPE_NORMAL: There are no special requirements for this ROC. 3173 * @IEEE80211_ROC_TYPE_MGMT_TX: The remain on channel request is required 3174 * for sending managment frames offchannel. 3175 */ 3176 enum ieee80211_roc_type { 3177 IEEE80211_ROC_TYPE_NORMAL = 0, 3178 IEEE80211_ROC_TYPE_MGMT_TX, 3179 }; 3180 3181 /** 3182 * enum ieee80211_reconfig_complete_type - reconfig type 3183 * 3184 * This enum is used by the reconfig_complete() callback to indicate what 3185 * reconfiguration type was completed. 3186 * 3187 * @IEEE80211_RECONFIG_TYPE_RESTART: hw restart type 3188 * (also due to resume() callback returning 1) 3189 * @IEEE80211_RECONFIG_TYPE_SUSPEND: suspend type (regardless 3190 * of wowlan configuration) 3191 */ 3192 enum ieee80211_reconfig_type { 3193 IEEE80211_RECONFIG_TYPE_RESTART, 3194 IEEE80211_RECONFIG_TYPE_SUSPEND, 3195 }; 3196 3197 /** 3198 * struct ieee80211_ops - callbacks from mac80211 to the driver 3199 * 3200 * This structure contains various callbacks that the driver may 3201 * handle or, in some cases, must handle, for example to configure 3202 * the hardware to a new channel or to transmit a frame. 3203 * 3204 * @tx: Handler that 802.11 module calls for each transmitted frame. 3205 * skb contains the buffer starting from the IEEE 802.11 header. 3206 * The low-level driver should send the frame out based on 3207 * configuration in the TX control data. This handler should, 3208 * preferably, never fail and stop queues appropriately. 3209 * Must be atomic. 3210 * 3211 * @start: Called before the first netdevice attached to the hardware 3212 * is enabled. This should turn on the hardware and must turn on 3213 * frame reception (for possibly enabled monitor interfaces.) 3214 * Returns negative error codes, these may be seen in userspace, 3215 * or zero. 3216 * When the device is started it should not have a MAC address 3217 * to avoid acknowledging frames before a non-monitor device 3218 * is added. 3219 * Must be implemented and can sleep. 3220 * 3221 * @stop: Called after last netdevice attached to the hardware 3222 * is disabled. This should turn off the hardware (at least 3223 * it must turn off frame reception.) 3224 * May be called right after add_interface if that rejects 3225 * an interface. If you added any work onto the mac80211 workqueue 3226 * you should ensure to cancel it on this callback. 3227 * Must be implemented and can sleep. 3228 * 3229 * @suspend: Suspend the device; mac80211 itself will quiesce before and 3230 * stop transmitting and doing any other configuration, and then 3231 * ask the device to suspend. This is only invoked when WoWLAN is 3232 * configured, otherwise the device is deconfigured completely and 3233 * reconfigured at resume time. 3234 * The driver may also impose special conditions under which it 3235 * wants to use the "normal" suspend (deconfigure), say if it only 3236 * supports WoWLAN when the device is associated. In this case, it 3237 * must return 1 from this function. 3238 * 3239 * @resume: If WoWLAN was configured, this indicates that mac80211 is 3240 * now resuming its operation, after this the device must be fully 3241 * functional again. If this returns an error, the only way out is 3242 * to also unregister the device. If it returns 1, then mac80211 3243 * will also go through the regular complete restart on resume. 3244 * 3245 * @set_wakeup: Enable or disable wakeup when WoWLAN configuration is 3246 * modified. The reason is that device_set_wakeup_enable() is 3247 * supposed to be called when the configuration changes, not only 3248 * in suspend(). 3249 * 3250 * @add_interface: Called when a netdevice attached to the hardware is 3251 * enabled. Because it is not called for monitor mode devices, @start 3252 * and @stop must be implemented. 3253 * The driver should perform any initialization it needs before 3254 * the device can be enabled. The initial configuration for the 3255 * interface is given in the conf parameter. 3256 * The callback may refuse to add an interface by returning a 3257 * negative error code (which will be seen in userspace.) 3258 * Must be implemented and can sleep. 3259 * 3260 * @change_interface: Called when a netdevice changes type. This callback 3261 * is optional, but only if it is supported can interface types be 3262 * switched while the interface is UP. The callback may sleep. 3263 * Note that while an interface is being switched, it will not be 3264 * found by the interface iteration callbacks. 3265 * 3266 * @remove_interface: Notifies a driver that an interface is going down. 3267 * The @stop callback is called after this if it is the last interface 3268 * and no monitor interfaces are present. 3269 * When all interfaces are removed, the MAC address in the hardware 3270 * must be cleared so the device no longer acknowledges packets, 3271 * the mac_addr member of the conf structure is, however, set to the 3272 * MAC address of the device going away. 3273 * Hence, this callback must be implemented. It can sleep. 3274 * 3275 * @config: Handler for configuration requests. IEEE 802.11 code calls this 3276 * function to change hardware configuration, e.g., channel. 3277 * This function should never fail but returns a negative error code 3278 * if it does. The callback can sleep. 3279 * 3280 * @bss_info_changed: Handler for configuration requests related to BSS 3281 * parameters that may vary during BSS's lifespan, and may affect low 3282 * level driver (e.g. assoc/disassoc status, erp parameters). 3283 * This function should not be used if no BSS has been set, unless 3284 * for association indication. The @changed parameter indicates which 3285 * of the bss parameters has changed when a call is made. The callback 3286 * can sleep. 3287 * 3288 * @prepare_multicast: Prepare for multicast filter configuration. 3289 * This callback is optional, and its return value is passed 3290 * to configure_filter(). This callback must be atomic. 3291 * 3292 * @configure_filter: Configure the device's RX filter. 3293 * See the section "Frame filtering" for more information. 3294 * This callback must be implemented and can sleep. 3295 * 3296 * @config_iface_filter: Configure the interface's RX filter. 3297 * This callback is optional and is used to configure which frames 3298 * should be passed to mac80211. The filter_flags is the combination 3299 * of FIF_* flags. The changed_flags is a bit mask that indicates 3300 * which flags are changed. 3301 * This callback can sleep. 3302 * 3303 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit 3304 * must be set or cleared for a given STA. Must be atomic. 3305 * 3306 * @set_key: See the section "Hardware crypto acceleration" 3307 * This callback is only called between add_interface and 3308 * remove_interface calls, i.e. while the given virtual interface 3309 * is enabled. 3310 * Returns a negative error code if the key can't be added. 3311 * The callback can sleep. 3312 * 3313 * @update_tkip_key: See the section "Hardware crypto acceleration" 3314 * This callback will be called in the context of Rx. Called for drivers 3315 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. 3316 * The callback must be atomic. 3317 * 3318 * @set_rekey_data: If the device supports GTK rekeying, for example while the 3319 * host is suspended, it can assign this callback to retrieve the data 3320 * necessary to do GTK rekeying, this is the KEK, KCK and replay counter. 3321 * After rekeying was done it should (for example during resume) notify 3322 * userspace of the new replay counter using ieee80211_gtk_rekey_notify(). 3323 * 3324 * @set_default_unicast_key: Set the default (unicast) key index, useful for 3325 * WEP when the device sends data packets autonomously, e.g. for ARP 3326 * offloading. The index can be 0-3, or -1 for unsetting it. 3327 * 3328 * @hw_scan: Ask the hardware to service the scan request, no need to start 3329 * the scan state machine in stack. The scan must honour the channel 3330 * configuration done by the regulatory agent in the wiphy's 3331 * registered bands. The hardware (or the driver) needs to make sure 3332 * that power save is disabled. 3333 * The @req ie/ie_len members are rewritten by mac80211 to contain the 3334 * entire IEs after the SSID, so that drivers need not look at these 3335 * at all but just send them after the SSID -- mac80211 includes the 3336 * (extended) supported rates and HT information (where applicable). 3337 * When the scan finishes, ieee80211_scan_completed() must be called; 3338 * note that it also must be called when the scan cannot finish due to 3339 * any error unless this callback returned a negative error code. 3340 * This callback is also allowed to return the special return value 1, 3341 * this indicates that hardware scan isn't desirable right now and a 3342 * software scan should be done instead. A driver wishing to use this 3343 * capability must ensure its (hardware) scan capabilities aren't 3344 * advertised as more capable than mac80211's software scan is. 3345 * The callback can sleep. 3346 * 3347 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan. 3348 * The driver should ask the hardware to cancel the scan (if possible), 3349 * but the scan will be completed only after the driver will call 3350 * ieee80211_scan_completed(). 3351 * This callback is needed for wowlan, to prevent enqueueing a new 3352 * scan_work after the low-level driver was already suspended. 3353 * The callback can sleep. 3354 * 3355 * @sched_scan_start: Ask the hardware to start scanning repeatedly at 3356 * specific intervals. The driver must call the 3357 * ieee80211_sched_scan_results() function whenever it finds results. 3358 * This process will continue until sched_scan_stop is called. 3359 * 3360 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan. 3361 * In this case, ieee80211_sched_scan_stopped() must not be called. 3362 * 3363 * @sw_scan_start: Notifier function that is called just before a software scan 3364 * is started. Can be NULL, if the driver doesn't need this notification. 3365 * The mac_addr parameter allows supporting NL80211_SCAN_FLAG_RANDOM_ADDR, 3366 * the driver may set the NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR flag if it 3367 * can use this parameter. The callback can sleep. 3368 * 3369 * @sw_scan_complete: Notifier function that is called just after a 3370 * software scan finished. Can be NULL, if the driver doesn't need 3371 * this notification. 3372 * The callback can sleep. 3373 * 3374 * @get_stats: Return low-level statistics. 3375 * Returns zero if statistics are available. 3376 * The callback can sleep. 3377 * 3378 * @get_key_seq: If your device implements encryption in hardware and does 3379 * IV/PN assignment then this callback should be provided to read the 3380 * IV/PN for the given key from hardware. 3381 * The callback must be atomic. 3382 * 3383 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this 3384 * if the device does fragmentation by itself. Note that to prevent the 3385 * stack from doing fragmentation IEEE80211_HW_SUPPORTS_TX_FRAG 3386 * should be set as well. 3387 * The callback can sleep. 3388 * 3389 * @set_rts_threshold: Configuration of RTS threshold (if device needs it) 3390 * The callback can sleep. 3391 * 3392 * @sta_add: Notifies low level driver about addition of an associated station, 3393 * AP, IBSS/WDS/mesh peer etc. This callback can sleep. 3394 * 3395 * @sta_remove: Notifies low level driver about removal of an associated 3396 * station, AP, IBSS/WDS/mesh peer etc. Note that after the callback 3397 * returns it isn't safe to use the pointer, not even RCU protected; 3398 * no RCU grace period is guaranteed between returning here and freeing 3399 * the station. See @sta_pre_rcu_remove if needed. 3400 * This callback can sleep. 3401 * 3402 * @sta_add_debugfs: Drivers can use this callback to add debugfs files 3403 * when a station is added to mac80211's station list. This callback 3404 * should be within a CONFIG_MAC80211_DEBUGFS conditional. This 3405 * callback can sleep. 3406 * 3407 * @sta_notify: Notifies low level driver about power state transition of an 3408 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating 3409 * in AP mode, this callback will not be called when the flag 3410 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. 3411 * 3412 * @sta_state: Notifies low level driver about state transition of a 3413 * station (which can be the AP, a client, IBSS/WDS/mesh peer etc.) 3414 * This callback is mutually exclusive with @sta_add/@sta_remove. 3415 * It must not fail for down transitions but may fail for transitions 3416 * up the list of states. Also note that after the callback returns it 3417 * isn't safe to use the pointer, not even RCU protected - no RCU grace 3418 * period is guaranteed between returning here and freeing the station. 3419 * See @sta_pre_rcu_remove if needed. 3420 * The callback can sleep. 3421 * 3422 * @sta_pre_rcu_remove: Notify driver about station removal before RCU 3423 * synchronisation. This is useful if a driver needs to have station 3424 * pointers protected using RCU, it can then use this call to clear 3425 * the pointers instead of waiting for an RCU grace period to elapse 3426 * in @sta_state. 3427 * The callback can sleep. 3428 * 3429 * @sta_rc_update: Notifies the driver of changes to the bitrates that can be 3430 * used to transmit to the station. The changes are advertised with bits 3431 * from &enum ieee80211_rate_control_changed and the values are reflected 3432 * in the station data. This callback should only be used when the driver 3433 * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since 3434 * otherwise the rate control algorithm is notified directly. 3435 * Must be atomic. 3436 * @sta_rate_tbl_update: Notifies the driver that the rate table changed. This 3437 * is only used if the configured rate control algorithm actually uses 3438 * the new rate table API, and is therefore optional. Must be atomic. 3439 * 3440 * @sta_statistics: Get statistics for this station. For example with beacon 3441 * filtering, the statistics kept by mac80211 might not be accurate, so 3442 * let the driver pre-fill the statistics. The driver can fill most of 3443 * the values (indicating which by setting the filled bitmap), but not 3444 * all of them make sense - see the source for which ones are possible. 3445 * Statistics that the driver doesn't fill will be filled by mac80211. 3446 * The callback can sleep. 3447 * 3448 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), 3449 * bursting) for a hardware TX queue. 3450 * Returns a negative error code on failure. 3451 * The callback can sleep. 3452 * 3453 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, 3454 * this is only used for IBSS mode BSSID merging and debugging. Is not a 3455 * required function. 3456 * The callback can sleep. 3457 * 3458 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. 3459 * Currently, this is only used for IBSS mode debugging. Is not a 3460 * required function. 3461 * The callback can sleep. 3462 * 3463 * @offset_tsf: Offset the TSF timer by the specified value in the 3464 * firmware/hardware. Preferred to set_tsf as it avoids delay between 3465 * calling set_tsf() and hardware getting programmed, which will show up 3466 * as TSF delay. Is not a required function. 3467 * The callback can sleep. 3468 * 3469 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize 3470 * with other STAs in the IBSS. This is only used in IBSS mode. This 3471 * function is optional if the firmware/hardware takes full care of 3472 * TSF synchronization. 3473 * The callback can sleep. 3474 * 3475 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. 3476 * This is needed only for IBSS mode and the result of this function is 3477 * used to determine whether to reply to Probe Requests. 3478 * Returns non-zero if this device sent the last beacon. 3479 * The callback can sleep. 3480 * 3481 * @get_survey: Return per-channel survey information 3482 * 3483 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also 3484 * need to set wiphy->rfkill_poll to %true before registration, 3485 * and need to call wiphy_rfkill_set_hw_state() in the callback. 3486 * The callback can sleep. 3487 * 3488 * @set_coverage_class: Set slot time for given coverage class as specified 3489 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout 3490 * accordingly; coverage class equals to -1 to enable ACK timeout 3491 * estimation algorithm (dynack). To disable dynack set valid value for 3492 * coverage class. This callback is not required and may sleep. 3493 * 3494 * @testmode_cmd: Implement a cfg80211 test mode command. The passed @vif may 3495 * be %NULL. The callback can sleep. 3496 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep. 3497 * 3498 * @flush: Flush all pending frames from the hardware queue, making sure 3499 * that the hardware queues are empty. The @queues parameter is a bitmap 3500 * of queues to flush, which is useful if different virtual interfaces 3501 * use different hardware queues; it may also indicate all queues. 3502 * If the parameter @drop is set to %true, pending frames may be dropped. 3503 * Note that vif can be NULL. 3504 * The callback can sleep. 3505 * 3506 * @channel_switch: Drivers that need (or want) to offload the channel 3507 * switch operation for CSAs received from the AP may implement this 3508 * callback. They must then call ieee80211_chswitch_done() to indicate 3509 * completion of the channel switch. 3510 * 3511 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 3512 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 3513 * reject TX/RX mask combinations they cannot support by returning -EINVAL 3514 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 3515 * 3516 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 3517 * 3518 * @remain_on_channel: Starts an off-channel period on the given channel, must 3519 * call back to ieee80211_ready_on_channel() when on that channel. Note 3520 * that normal channel traffic is not stopped as this is intended for hw 3521 * offload. Frames to transmit on the off-channel channel are transmitted 3522 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the 3523 * duration (which will always be non-zero) expires, the driver must call 3524 * ieee80211_remain_on_channel_expired(). 3525 * Note that this callback may be called while the device is in IDLE and 3526 * must be accepted in this case. 3527 * This callback may sleep. 3528 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is 3529 * aborted before it expires. This callback may sleep. 3530 * 3531 * @set_ringparam: Set tx and rx ring sizes. 3532 * 3533 * @get_ringparam: Get tx and rx ring current and maximum sizes. 3534 * 3535 * @tx_frames_pending: Check if there is any pending frame in the hardware 3536 * queues before entering power save. 3537 * 3538 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection 3539 * when transmitting a frame. Currently only legacy rates are handled. 3540 * The callback can sleep. 3541 * @event_callback: Notify driver about any event in mac80211. See 3542 * &enum ieee80211_event_type for the different types. 3543 * The callback must be atomic. 3544 * 3545 * @release_buffered_frames: Release buffered frames according to the given 3546 * parameters. In the case where the driver buffers some frames for 3547 * sleeping stations mac80211 will use this callback to tell the driver 3548 * to release some frames, either for PS-poll or uAPSD. 3549 * Note that if the @more_data parameter is %false the driver must check 3550 * if there are more frames on the given TIDs, and if there are more than 3551 * the frames being released then it must still set the more-data bit in 3552 * the frame. If the @more_data parameter is %true, then of course the 3553 * more-data bit must always be set. 3554 * The @tids parameter tells the driver which TIDs to release frames 3555 * from, for PS-poll it will always have only a single bit set. 3556 * In the case this is used for a PS-poll initiated release, the 3557 * @num_frames parameter will always be 1 so code can be shared. In 3558 * this case the driver must also set %IEEE80211_TX_STATUS_EOSP flag 3559 * on the TX status (and must report TX status) so that the PS-poll 3560 * period is properly ended. This is used to avoid sending multiple 3561 * responses for a retried PS-poll frame. 3562 * In the case this is used for uAPSD, the @num_frames parameter may be 3563 * bigger than one, but the driver may send fewer frames (it must send 3564 * at least one, however). In this case it is also responsible for 3565 * setting the EOSP flag in the QoS header of the frames. Also, when the 3566 * service period ends, the driver must set %IEEE80211_TX_STATUS_EOSP 3567 * on the last frame in the SP. Alternatively, it may call the function 3568 * ieee80211_sta_eosp() to inform mac80211 of the end of the SP. 3569 * This callback must be atomic. 3570 * @allow_buffered_frames: Prepare device to allow the given number of frames 3571 * to go out to the given station. The frames will be sent by mac80211 3572 * via the usual TX path after this call. The TX information for frames 3573 * released will also have the %IEEE80211_TX_CTL_NO_PS_BUFFER flag set 3574 * and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case 3575 * frames from multiple TIDs are released and the driver might reorder 3576 * them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag 3577 * on the last frame and clear it on all others and also handle the EOSP 3578 * bit in the QoS header correctly. Alternatively, it can also call the 3579 * ieee80211_sta_eosp() function. 3580 * The @tids parameter is a bitmap and tells the driver which TIDs the 3581 * frames will be on; it will at most have two bits set. 3582 * This callback must be atomic. 3583 * 3584 * @get_et_sset_count: Ethtool API to get string-set count. 3585 * 3586 * @get_et_stats: Ethtool API to get a set of u64 stats. 3587 * 3588 * @get_et_strings: Ethtool API to get a set of strings to describe stats 3589 * and perhaps other supported types of ethtool data-sets. 3590 * 3591 * @mgd_prepare_tx: Prepare for transmitting a management frame for association 3592 * before associated. In multi-channel scenarios, a virtual interface is 3593 * bound to a channel before it is associated, but as it isn't associated 3594 * yet it need not necessarily be given airtime, in particular since any 3595 * transmission to a P2P GO needs to be synchronized against the GO's 3596 * powersave state. mac80211 will call this function before transmitting a 3597 * management frame prior to having successfully associated to allow the 3598 * driver to give it channel time for the transmission, to get a response 3599 * and to be able to synchronize with the GO. 3600 * For drivers that set %IEEE80211_HW_DEAUTH_NEED_MGD_TX_PREP, mac80211 3601 * would also call this function before transmitting a deauthentication 3602 * frame in case that no beacon was heard from the AP/P2P GO. 3603 * The callback will be called before each transmission and upon return 3604 * mac80211 will transmit the frame right away. 3605 * If duration is greater than zero, mac80211 hints to the driver the 3606 * duration for which the operation is requested. 3607 * The callback is optional and can (should!) sleep. 3608 * 3609 * @mgd_protect_tdls_discover: Protect a TDLS discovery session. After sending 3610 * a TDLS discovery-request, we expect a reply to arrive on the AP's 3611 * channel. We must stay on the channel (no PSM, scan, etc.), since a TDLS 3612 * setup-response is a direct packet not buffered by the AP. 3613 * mac80211 will call this function just before the transmission of a TDLS 3614 * discovery-request. The recommended period of protection is at least 3615 * 2 * (DTIM period). 3616 * The callback is optional and can sleep. 3617 * 3618 * @add_chanctx: Notifies device driver about new channel context creation. 3619 * This callback may sleep. 3620 * @remove_chanctx: Notifies device driver about channel context destruction. 3621 * This callback may sleep. 3622 * @change_chanctx: Notifies device driver about channel context changes that 3623 * may happen when combining different virtual interfaces on the same 3624 * channel context with different settings 3625 * This callback may sleep. 3626 * @assign_vif_chanctx: Notifies device driver about channel context being bound 3627 * to vif. Possible use is for hw queue remapping. 3628 * This callback may sleep. 3629 * @unassign_vif_chanctx: Notifies device driver about channel context being 3630 * unbound from vif. 3631 * This callback may sleep. 3632 * @switch_vif_chanctx: switch a number of vifs from one chanctx to 3633 * another, as specified in the list of 3634 * @ieee80211_vif_chanctx_switch passed to the driver, according 3635 * to the mode defined in &ieee80211_chanctx_switch_mode. 3636 * This callback may sleep. 3637 * 3638 * @start_ap: Start operation on the AP interface, this is called after all the 3639 * information in bss_conf is set and beacon can be retrieved. A channel 3640 * context is bound before this is called. Note that if the driver uses 3641 * software scan or ROC, this (and @stop_ap) isn't called when the AP is 3642 * just "paused" for scanning/ROC, which is indicated by the beacon being 3643 * disabled/enabled via @bss_info_changed. 3644 * @stop_ap: Stop operation on the AP interface. 3645 * 3646 * @reconfig_complete: Called after a call to ieee80211_restart_hw() and 3647 * during resume, when the reconfiguration has completed. 3648 * This can help the driver implement the reconfiguration step (and 3649 * indicate mac80211 is ready to receive frames). 3650 * This callback may sleep. 3651 * 3652 * @ipv6_addr_change: IPv6 address assignment on the given interface changed. 3653 * Currently, this is only called for managed or P2P client interfaces. 3654 * This callback is optional; it must not sleep. 3655 * 3656 * @channel_switch_beacon: Starts a channel switch to a new channel. 3657 * Beacons are modified to include CSA or ECSA IEs before calling this 3658 * function. The corresponding count fields in these IEs must be 3659 * decremented, and when they reach 1 the driver must call 3660 * ieee80211_csa_finish(). Drivers which use ieee80211_beacon_get() 3661 * get the csa counter decremented by mac80211, but must check if it is 3662 * 1 using ieee80211_csa_is_complete() after the beacon has been 3663 * transmitted and then call ieee80211_csa_finish(). 3664 * If the CSA count starts as zero or 1, this function will not be called, 3665 * since there won't be any time to beacon before the switch anyway. 3666 * @pre_channel_switch: This is an optional callback that is called 3667 * before a channel switch procedure is started (ie. when a STA 3668 * gets a CSA or a userspace initiated channel-switch), allowing 3669 * the driver to prepare for the channel switch. 3670 * @post_channel_switch: This is an optional callback that is called 3671 * after a channel switch procedure is completed, allowing the 3672 * driver to go back to a normal configuration. 3673 * @abort_channel_switch: This is an optional callback that is called 3674 * when channel switch procedure was completed, allowing the 3675 * driver to go back to a normal configuration. 3676 * @channel_switch_rx_beacon: This is an optional callback that is called 3677 * when channel switch procedure is in progress and additional beacon with 3678 * CSA IE was received, allowing driver to track changes in count. 3679 * @join_ibss: Join an IBSS (on an IBSS interface); this is called after all 3680 * information in bss_conf is set up and the beacon can be retrieved. A 3681 * channel context is bound before this is called. 3682 * @leave_ibss: Leave the IBSS again. 3683 * 3684 * @get_expected_throughput: extract the expected throughput towards the 3685 * specified station. The returned value is expressed in Kbps. It returns 0 3686 * if the RC algorithm does not have proper data to provide. 3687 * 3688 * @get_txpower: get current maximum tx power (in dBm) based on configuration 3689 * and hardware limits. 3690 * 3691 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver 3692 * is responsible for continually initiating channel-switching operations 3693 * and returning to the base channel for communication with the AP. The 3694 * driver receives a channel-switch request template and the location of 3695 * the switch-timing IE within the template as part of the invocation. 3696 * The template is valid only within the call, and the driver can 3697 * optionally copy the skb for further re-use. 3698 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both 3699 * peers must be on the base channel when the call completes. 3700 * @tdls_recv_channel_switch: a TDLS channel-switch related frame (request or 3701 * response) has been received from a remote peer. The driver gets 3702 * parameters parsed from the incoming frame and may use them to continue 3703 * an ongoing channel-switch operation. In addition, a channel-switch 3704 * response template is provided, together with the location of the 3705 * switch-timing IE within the template. The skb can only be used within 3706 * the function call. 3707 * 3708 * @wake_tx_queue: Called when new packets have been added to the queue. 3709 * @sync_rx_queues: Process all pending frames in RSS queues. This is a 3710 * synchronization which is needed in case driver has in its RSS queues 3711 * pending frames that were received prior to the control path action 3712 * currently taken (e.g. disassociation) but are not processed yet. 3713 * 3714 * @start_nan: join an existing NAN cluster, or create a new one. 3715 * @stop_nan: leave the NAN cluster. 3716 * @nan_change_conf: change NAN configuration. The data in cfg80211_nan_conf 3717 * contains full new configuration and changes specify which parameters 3718 * are changed with respect to the last NAN config. 3719 * The driver gets both full configuration and the changed parameters since 3720 * some devices may need the full configuration while others need only the 3721 * changed parameters. 3722 * @add_nan_func: Add a NAN function. Returns 0 on success. The data in 3723 * cfg80211_nan_func must not be referenced outside the scope of 3724 * this call. 3725 * @del_nan_func: Remove a NAN function. The driver must call 3726 * ieee80211_nan_func_terminated() with 3727 * NL80211_NAN_FUNC_TERM_REASON_USER_REQUEST reason code upon removal. 3728 * @can_aggregate_in_amsdu: Called in order to determine if HW supports 3729 * aggregating two specific frames in the same A-MSDU. The relation 3730 * between the skbs should be symmetric and transitive. Note that while 3731 * skb is always a real frame, head may or may not be an A-MSDU. 3732 * @get_ftm_responder_stats: Retrieve FTM responder statistics, if available. 3733 * Statistics should be cumulative, currently no way to reset is provided. 3734 * 3735 * @start_pmsr: start peer measurement (e.g. FTM) (this call can sleep) 3736 * @abort_pmsr: abort peer measurement (this call can sleep) 3737 */ 3738 struct ieee80211_ops { 3739 void (*tx)(struct ieee80211_hw *hw, 3740 struct ieee80211_tx_control *control, 3741 struct sk_buff *skb); 3742 int (*start)(struct ieee80211_hw *hw); 3743 void (*stop)(struct ieee80211_hw *hw); 3744 #ifdef CONFIG_PM 3745 int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan); 3746 int (*resume)(struct ieee80211_hw *hw); 3747 void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled); 3748 #endif 3749 int (*add_interface)(struct ieee80211_hw *hw, 3750 struct ieee80211_vif *vif); 3751 int (*change_interface)(struct ieee80211_hw *hw, 3752 struct ieee80211_vif *vif, 3753 enum nl80211_iftype new_type, bool p2p); 3754 void (*remove_interface)(struct ieee80211_hw *hw, 3755 struct ieee80211_vif *vif); 3756 int (*config)(struct ieee80211_hw *hw, u32 changed); 3757 void (*bss_info_changed)(struct ieee80211_hw *hw, 3758 struct ieee80211_vif *vif, 3759 struct ieee80211_bss_conf *info, 3760 u32 changed); 3761 3762 int (*start_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3763 void (*stop_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3764 3765 u64 (*prepare_multicast)(struct ieee80211_hw *hw, 3766 struct netdev_hw_addr_list *mc_list); 3767 void (*configure_filter)(struct ieee80211_hw *hw, 3768 unsigned int changed_flags, 3769 unsigned int *total_flags, 3770 u64 multicast); 3771 void (*config_iface_filter)(struct ieee80211_hw *hw, 3772 struct ieee80211_vif *vif, 3773 unsigned int filter_flags, 3774 unsigned int changed_flags); 3775 int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 3776 bool set); 3777 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, 3778 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 3779 struct ieee80211_key_conf *key); 3780 void (*update_tkip_key)(struct ieee80211_hw *hw, 3781 struct ieee80211_vif *vif, 3782 struct ieee80211_key_conf *conf, 3783 struct ieee80211_sta *sta, 3784 u32 iv32, u16 *phase1key); 3785 void (*set_rekey_data)(struct ieee80211_hw *hw, 3786 struct ieee80211_vif *vif, 3787 struct cfg80211_gtk_rekey_data *data); 3788 void (*set_default_unicast_key)(struct ieee80211_hw *hw, 3789 struct ieee80211_vif *vif, int idx); 3790 int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3791 struct ieee80211_scan_request *req); 3792 void (*cancel_hw_scan)(struct ieee80211_hw *hw, 3793 struct ieee80211_vif *vif); 3794 int (*sched_scan_start)(struct ieee80211_hw *hw, 3795 struct ieee80211_vif *vif, 3796 struct cfg80211_sched_scan_request *req, 3797 struct ieee80211_scan_ies *ies); 3798 int (*sched_scan_stop)(struct ieee80211_hw *hw, 3799 struct ieee80211_vif *vif); 3800 void (*sw_scan_start)(struct ieee80211_hw *hw, 3801 struct ieee80211_vif *vif, 3802 const u8 *mac_addr); 3803 void (*sw_scan_complete)(struct ieee80211_hw *hw, 3804 struct ieee80211_vif *vif); 3805 int (*get_stats)(struct ieee80211_hw *hw, 3806 struct ieee80211_low_level_stats *stats); 3807 void (*get_key_seq)(struct ieee80211_hw *hw, 3808 struct ieee80211_key_conf *key, 3809 struct ieee80211_key_seq *seq); 3810 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); 3811 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); 3812 int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3813 struct ieee80211_sta *sta); 3814 int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3815 struct ieee80211_sta *sta); 3816 #ifdef CONFIG_MAC80211_DEBUGFS 3817 void (*sta_add_debugfs)(struct ieee80211_hw *hw, 3818 struct ieee80211_vif *vif, 3819 struct ieee80211_sta *sta, 3820 struct dentry *dir); 3821 #endif 3822 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3823 enum sta_notify_cmd, struct ieee80211_sta *sta); 3824 int (*sta_set_txpwr)(struct ieee80211_hw *hw, 3825 struct ieee80211_vif *vif, 3826 struct ieee80211_sta *sta); 3827 int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3828 struct ieee80211_sta *sta, 3829 enum ieee80211_sta_state old_state, 3830 enum ieee80211_sta_state new_state); 3831 void (*sta_pre_rcu_remove)(struct ieee80211_hw *hw, 3832 struct ieee80211_vif *vif, 3833 struct ieee80211_sta *sta); 3834 void (*sta_rc_update)(struct ieee80211_hw *hw, 3835 struct ieee80211_vif *vif, 3836 struct ieee80211_sta *sta, 3837 u32 changed); 3838 void (*sta_rate_tbl_update)(struct ieee80211_hw *hw, 3839 struct ieee80211_vif *vif, 3840 struct ieee80211_sta *sta); 3841 void (*sta_statistics)(struct ieee80211_hw *hw, 3842 struct ieee80211_vif *vif, 3843 struct ieee80211_sta *sta, 3844 struct station_info *sinfo); 3845 int (*conf_tx)(struct ieee80211_hw *hw, 3846 struct ieee80211_vif *vif, u16 ac, 3847 const struct ieee80211_tx_queue_params *params); 3848 u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3849 void (*set_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3850 u64 tsf); 3851 void (*offset_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3852 s64 offset); 3853 void (*reset_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3854 int (*tx_last_beacon)(struct ieee80211_hw *hw); 3855 3856 /** 3857 * @ampdu_action: 3858 * Perform a certain A-MPDU action. 3859 * The RA/TID combination determines the destination and TID we want 3860 * the ampdu action to be performed for. The action is defined through 3861 * ieee80211_ampdu_mlme_action. 3862 * When the action is set to %IEEE80211_AMPDU_TX_OPERATIONAL the driver 3863 * may neither send aggregates containing more subframes than @buf_size 3864 * nor send aggregates in a way that lost frames would exceed the 3865 * buffer size. If just limiting the aggregate size, this would be 3866 * possible with a buf_size of 8: 3867 * 3868 * - ``TX: 1.....7`` 3869 * - ``RX: 2....7`` (lost frame #1) 3870 * - ``TX: 8..1...`` 3871 * 3872 * which is invalid since #1 was now re-transmitted well past the 3873 * buffer size of 8. Correct ways to retransmit #1 would be: 3874 * 3875 * - ``TX: 1 or`` 3876 * - ``TX: 18 or`` 3877 * - ``TX: 81`` 3878 * 3879 * Even ``189`` would be wrong since 1 could be lost again. 3880 * 3881 * Returns a negative error code on failure. 3882 * The callback can sleep. 3883 */ 3884 int (*ampdu_action)(struct ieee80211_hw *hw, 3885 struct ieee80211_vif *vif, 3886 struct ieee80211_ampdu_params *params); 3887 int (*get_survey)(struct ieee80211_hw *hw, int idx, 3888 struct survey_info *survey); 3889 void (*rfkill_poll)(struct ieee80211_hw *hw); 3890 void (*set_coverage_class)(struct ieee80211_hw *hw, s16 coverage_class); 3891 #ifdef CONFIG_NL80211_TESTMODE 3892 int (*testmode_cmd)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3893 void *data, int len); 3894 int (*testmode_dump)(struct ieee80211_hw *hw, struct sk_buff *skb, 3895 struct netlink_callback *cb, 3896 void *data, int len); 3897 #endif 3898 void (*flush)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3899 u32 queues, bool drop); 3900 void (*channel_switch)(struct ieee80211_hw *hw, 3901 struct ieee80211_vif *vif, 3902 struct ieee80211_channel_switch *ch_switch); 3903 int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); 3904 int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); 3905 3906 int (*remain_on_channel)(struct ieee80211_hw *hw, 3907 struct ieee80211_vif *vif, 3908 struct ieee80211_channel *chan, 3909 int duration, 3910 enum ieee80211_roc_type type); 3911 int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); 3912 int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); 3913 void (*get_ringparam)(struct ieee80211_hw *hw, 3914 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 3915 bool (*tx_frames_pending)(struct ieee80211_hw *hw); 3916 int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3917 const struct cfg80211_bitrate_mask *mask); 3918 void (*event_callback)(struct ieee80211_hw *hw, 3919 struct ieee80211_vif *vif, 3920 const struct ieee80211_event *event); 3921 3922 void (*allow_buffered_frames)(struct ieee80211_hw *hw, 3923 struct ieee80211_sta *sta, 3924 u16 tids, int num_frames, 3925 enum ieee80211_frame_release_type reason, 3926 bool more_data); 3927 void (*release_buffered_frames)(struct ieee80211_hw *hw, 3928 struct ieee80211_sta *sta, 3929 u16 tids, int num_frames, 3930 enum ieee80211_frame_release_type reason, 3931 bool more_data); 3932 3933 int (*get_et_sset_count)(struct ieee80211_hw *hw, 3934 struct ieee80211_vif *vif, int sset); 3935 void (*get_et_stats)(struct ieee80211_hw *hw, 3936 struct ieee80211_vif *vif, 3937 struct ethtool_stats *stats, u64 *data); 3938 void (*get_et_strings)(struct ieee80211_hw *hw, 3939 struct ieee80211_vif *vif, 3940 u32 sset, u8 *data); 3941 3942 void (*mgd_prepare_tx)(struct ieee80211_hw *hw, 3943 struct ieee80211_vif *vif, 3944 u16 duration); 3945 3946 void (*mgd_protect_tdls_discover)(struct ieee80211_hw *hw, 3947 struct ieee80211_vif *vif); 3948 3949 int (*add_chanctx)(struct ieee80211_hw *hw, 3950 struct ieee80211_chanctx_conf *ctx); 3951 void (*remove_chanctx)(struct ieee80211_hw *hw, 3952 struct ieee80211_chanctx_conf *ctx); 3953 void (*change_chanctx)(struct ieee80211_hw *hw, 3954 struct ieee80211_chanctx_conf *ctx, 3955 u32 changed); 3956 int (*assign_vif_chanctx)(struct ieee80211_hw *hw, 3957 struct ieee80211_vif *vif, 3958 struct ieee80211_chanctx_conf *ctx); 3959 void (*unassign_vif_chanctx)(struct ieee80211_hw *hw, 3960 struct ieee80211_vif *vif, 3961 struct ieee80211_chanctx_conf *ctx); 3962 int (*switch_vif_chanctx)(struct ieee80211_hw *hw, 3963 struct ieee80211_vif_chanctx_switch *vifs, 3964 int n_vifs, 3965 enum ieee80211_chanctx_switch_mode mode); 3966 3967 void (*reconfig_complete)(struct ieee80211_hw *hw, 3968 enum ieee80211_reconfig_type reconfig_type); 3969 3970 #if IS_ENABLED(CONFIG_IPV6) 3971 void (*ipv6_addr_change)(struct ieee80211_hw *hw, 3972 struct ieee80211_vif *vif, 3973 struct inet6_dev *idev); 3974 #endif 3975 void (*channel_switch_beacon)(struct ieee80211_hw *hw, 3976 struct ieee80211_vif *vif, 3977 struct cfg80211_chan_def *chandef); 3978 int (*pre_channel_switch)(struct ieee80211_hw *hw, 3979 struct ieee80211_vif *vif, 3980 struct ieee80211_channel_switch *ch_switch); 3981 3982 int (*post_channel_switch)(struct ieee80211_hw *hw, 3983 struct ieee80211_vif *vif); 3984 void (*abort_channel_switch)(struct ieee80211_hw *hw, 3985 struct ieee80211_vif *vif); 3986 void (*channel_switch_rx_beacon)(struct ieee80211_hw *hw, 3987 struct ieee80211_vif *vif, 3988 struct ieee80211_channel_switch *ch_switch); 3989 3990 int (*join_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3991 void (*leave_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3992 u32 (*get_expected_throughput)(struct ieee80211_hw *hw, 3993 struct ieee80211_sta *sta); 3994 int (*get_txpower)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3995 int *dbm); 3996 3997 int (*tdls_channel_switch)(struct ieee80211_hw *hw, 3998 struct ieee80211_vif *vif, 3999 struct ieee80211_sta *sta, u8 oper_class, 4000 struct cfg80211_chan_def *chandef, 4001 struct sk_buff *tmpl_skb, u32 ch_sw_tm_ie); 4002 void (*tdls_cancel_channel_switch)(struct ieee80211_hw *hw, 4003 struct ieee80211_vif *vif, 4004 struct ieee80211_sta *sta); 4005 void (*tdls_recv_channel_switch)(struct ieee80211_hw *hw, 4006 struct ieee80211_vif *vif, 4007 struct ieee80211_tdls_ch_sw_params *params); 4008 4009 void (*wake_tx_queue)(struct ieee80211_hw *hw, 4010 struct ieee80211_txq *txq); 4011 void (*sync_rx_queues)(struct ieee80211_hw *hw); 4012 4013 int (*start_nan)(struct ieee80211_hw *hw, 4014 struct ieee80211_vif *vif, 4015 struct cfg80211_nan_conf *conf); 4016 int (*stop_nan)(struct ieee80211_hw *hw, 4017 struct ieee80211_vif *vif); 4018 int (*nan_change_conf)(struct ieee80211_hw *hw, 4019 struct ieee80211_vif *vif, 4020 struct cfg80211_nan_conf *conf, u32 changes); 4021 int (*add_nan_func)(struct ieee80211_hw *hw, 4022 struct ieee80211_vif *vif, 4023 const struct cfg80211_nan_func *nan_func); 4024 void (*del_nan_func)(struct ieee80211_hw *hw, 4025 struct ieee80211_vif *vif, 4026 u8 instance_id); 4027 bool (*can_aggregate_in_amsdu)(struct ieee80211_hw *hw, 4028 struct sk_buff *head, 4029 struct sk_buff *skb); 4030 int (*get_ftm_responder_stats)(struct ieee80211_hw *hw, 4031 struct ieee80211_vif *vif, 4032 struct cfg80211_ftm_responder_stats *ftm_stats); 4033 int (*start_pmsr)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 4034 struct cfg80211_pmsr_request *request); 4035 void (*abort_pmsr)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 4036 struct cfg80211_pmsr_request *request); 4037 }; 4038 4039 /** 4040 * ieee80211_alloc_hw_nm - Allocate a new hardware device 4041 * 4042 * This must be called once for each hardware device. The returned pointer 4043 * must be used to refer to this device when calling other functions. 4044 * mac80211 allocates a private data area for the driver pointed to by 4045 * @priv in &struct ieee80211_hw, the size of this area is given as 4046 * @priv_data_len. 4047 * 4048 * @priv_data_len: length of private data 4049 * @ops: callbacks for this device 4050 * @requested_name: Requested name for this device. 4051 * NULL is valid value, and means use the default naming (phy%d) 4052 * 4053 * Return: A pointer to the new hardware device, or %NULL on error. 4054 */ 4055 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 4056 const struct ieee80211_ops *ops, 4057 const char *requested_name); 4058 4059 /** 4060 * ieee80211_alloc_hw - Allocate a new hardware device 4061 * 4062 * This must be called once for each hardware device. The returned pointer 4063 * must be used to refer to this device when calling other functions. 4064 * mac80211 allocates a private data area for the driver pointed to by 4065 * @priv in &struct ieee80211_hw, the size of this area is given as 4066 * @priv_data_len. 4067 * 4068 * @priv_data_len: length of private data 4069 * @ops: callbacks for this device 4070 * 4071 * Return: A pointer to the new hardware device, or %NULL on error. 4072 */ 4073 static inline 4074 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, 4075 const struct ieee80211_ops *ops) 4076 { 4077 return ieee80211_alloc_hw_nm(priv_data_len, ops, NULL); 4078 } 4079 4080 /** 4081 * ieee80211_register_hw - Register hardware device 4082 * 4083 * You must call this function before any other functions in 4084 * mac80211. Note that before a hardware can be registered, you 4085 * need to fill the contained wiphy's information. 4086 * 4087 * @hw: the device to register as returned by ieee80211_alloc_hw() 4088 * 4089 * Return: 0 on success. An error code otherwise. 4090 */ 4091 int ieee80211_register_hw(struct ieee80211_hw *hw); 4092 4093 /** 4094 * struct ieee80211_tpt_blink - throughput blink description 4095 * @throughput: throughput in Kbit/sec 4096 * @blink_time: blink time in milliseconds 4097 * (full cycle, ie. one off + one on period) 4098 */ 4099 struct ieee80211_tpt_blink { 4100 int throughput; 4101 int blink_time; 4102 }; 4103 4104 /** 4105 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags 4106 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio 4107 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working 4108 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one 4109 * interface is connected in some way, including being an AP 4110 */ 4111 enum ieee80211_tpt_led_trigger_flags { 4112 IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), 4113 IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), 4114 IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), 4115 }; 4116 4117 #ifdef CONFIG_MAC80211_LEDS 4118 const char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); 4119 const char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); 4120 const char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); 4121 const char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); 4122 const char * 4123 __ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, 4124 unsigned int flags, 4125 const struct ieee80211_tpt_blink *blink_table, 4126 unsigned int blink_table_len); 4127 #endif 4128 /** 4129 * ieee80211_get_tx_led_name - get name of TX LED 4130 * 4131 * mac80211 creates a transmit LED trigger for each wireless hardware 4132 * that can be used to drive LEDs if your driver registers a LED device. 4133 * This function returns the name (or %NULL if not configured for LEDs) 4134 * of the trigger so you can automatically link the LED device. 4135 * 4136 * @hw: the hardware to get the LED trigger name for 4137 * 4138 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 4139 */ 4140 static inline const char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) 4141 { 4142 #ifdef CONFIG_MAC80211_LEDS 4143 return __ieee80211_get_tx_led_name(hw); 4144 #else 4145 return NULL; 4146 #endif 4147 } 4148 4149 /** 4150 * ieee80211_get_rx_led_name - get name of RX LED 4151 * 4152 * mac80211 creates a receive LED trigger for each wireless hardware 4153 * that can be used to drive LEDs if your driver registers a LED device. 4154 * This function returns the name (or %NULL if not configured for LEDs) 4155 * of the trigger so you can automatically link the LED device. 4156 * 4157 * @hw: the hardware to get the LED trigger name for 4158 * 4159 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 4160 */ 4161 static inline const char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) 4162 { 4163 #ifdef CONFIG_MAC80211_LEDS 4164 return __ieee80211_get_rx_led_name(hw); 4165 #else 4166 return NULL; 4167 #endif 4168 } 4169 4170 /** 4171 * ieee80211_get_assoc_led_name - get name of association LED 4172 * 4173 * mac80211 creates a association LED trigger for each wireless hardware 4174 * that can be used to drive LEDs if your driver registers a LED device. 4175 * This function returns the name (or %NULL if not configured for LEDs) 4176 * of the trigger so you can automatically link the LED device. 4177 * 4178 * @hw: the hardware to get the LED trigger name for 4179 * 4180 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 4181 */ 4182 static inline const char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) 4183 { 4184 #ifdef CONFIG_MAC80211_LEDS 4185 return __ieee80211_get_assoc_led_name(hw); 4186 #else 4187 return NULL; 4188 #endif 4189 } 4190 4191 /** 4192 * ieee80211_get_radio_led_name - get name of radio LED 4193 * 4194 * mac80211 creates a radio change LED trigger for each wireless hardware 4195 * that can be used to drive LEDs if your driver registers a LED device. 4196 * This function returns the name (or %NULL if not configured for LEDs) 4197 * of the trigger so you can automatically link the LED device. 4198 * 4199 * @hw: the hardware to get the LED trigger name for 4200 * 4201 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 4202 */ 4203 static inline const char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) 4204 { 4205 #ifdef CONFIG_MAC80211_LEDS 4206 return __ieee80211_get_radio_led_name(hw); 4207 #else 4208 return NULL; 4209 #endif 4210 } 4211 4212 /** 4213 * ieee80211_create_tpt_led_trigger - create throughput LED trigger 4214 * @hw: the hardware to create the trigger for 4215 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags 4216 * @blink_table: the blink table -- needs to be ordered by throughput 4217 * @blink_table_len: size of the blink table 4218 * 4219 * Return: %NULL (in case of error, or if no LED triggers are 4220 * configured) or the name of the new trigger. 4221 * 4222 * Note: This function must be called before ieee80211_register_hw(). 4223 */ 4224 static inline const char * 4225 ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, 4226 const struct ieee80211_tpt_blink *blink_table, 4227 unsigned int blink_table_len) 4228 { 4229 #ifdef CONFIG_MAC80211_LEDS 4230 return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, 4231 blink_table_len); 4232 #else 4233 return NULL; 4234 #endif 4235 } 4236 4237 /** 4238 * ieee80211_unregister_hw - Unregister a hardware device 4239 * 4240 * This function instructs mac80211 to free allocated resources 4241 * and unregister netdevices from the networking subsystem. 4242 * 4243 * @hw: the hardware to unregister 4244 */ 4245 void ieee80211_unregister_hw(struct ieee80211_hw *hw); 4246 4247 /** 4248 * ieee80211_free_hw - free hardware descriptor 4249 * 4250 * This function frees everything that was allocated, including the 4251 * private data for the driver. You must call ieee80211_unregister_hw() 4252 * before calling this function. 4253 * 4254 * @hw: the hardware to free 4255 */ 4256 void ieee80211_free_hw(struct ieee80211_hw *hw); 4257 4258 /** 4259 * ieee80211_restart_hw - restart hardware completely 4260 * 4261 * Call this function when the hardware was restarted for some reason 4262 * (hardware error, ...) and the driver is unable to restore its state 4263 * by itself. mac80211 assumes that at this point the driver/hardware 4264 * is completely uninitialised and stopped, it starts the process by 4265 * calling the ->start() operation. The driver will need to reset all 4266 * internal state that it has prior to calling this function. 4267 * 4268 * @hw: the hardware to restart 4269 */ 4270 void ieee80211_restart_hw(struct ieee80211_hw *hw); 4271 4272 /** 4273 * ieee80211_rx_napi - receive frame from NAPI context 4274 * 4275 * Use this function to hand received frames to mac80211. The receive 4276 * buffer in @skb must start with an IEEE 802.11 header. In case of a 4277 * paged @skb is used, the driver is recommended to put the ieee80211 4278 * header of the frame on the linear part of the @skb to avoid memory 4279 * allocation and/or memcpy by the stack. 4280 * 4281 * This function may not be called in IRQ context. Calls to this function 4282 * for a single hardware must be synchronized against each other. Calls to 4283 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 4284 * mixed for a single hardware. Must not run concurrently with 4285 * ieee80211_tx_status() or ieee80211_tx_status_ni(). 4286 * 4287 * This function must be called with BHs disabled. 4288 * 4289 * @hw: the hardware this frame came in on 4290 * @sta: the station the frame was received from, or %NULL 4291 * @skb: the buffer to receive, owned by mac80211 after this call 4292 * @napi: the NAPI context 4293 */ 4294 void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 4295 struct sk_buff *skb, struct napi_struct *napi); 4296 4297 /** 4298 * ieee80211_rx - receive frame 4299 * 4300 * Use this function to hand received frames to mac80211. The receive 4301 * buffer in @skb must start with an IEEE 802.11 header. In case of a 4302 * paged @skb is used, the driver is recommended to put the ieee80211 4303 * header of the frame on the linear part of the @skb to avoid memory 4304 * allocation and/or memcpy by the stack. 4305 * 4306 * This function may not be called in IRQ context. Calls to this function 4307 * for a single hardware must be synchronized against each other. Calls to 4308 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 4309 * mixed for a single hardware. Must not run concurrently with 4310 * ieee80211_tx_status() or ieee80211_tx_status_ni(). 4311 * 4312 * In process context use instead ieee80211_rx_ni(). 4313 * 4314 * @hw: the hardware this frame came in on 4315 * @skb: the buffer to receive, owned by mac80211 after this call 4316 */ 4317 static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb) 4318 { 4319 ieee80211_rx_napi(hw, NULL, skb, NULL); 4320 } 4321 4322 /** 4323 * ieee80211_rx_irqsafe - receive frame 4324 * 4325 * Like ieee80211_rx() but can be called in IRQ context 4326 * (internally defers to a tasklet.) 4327 * 4328 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not 4329 * be mixed for a single hardware.Must not run concurrently with 4330 * ieee80211_tx_status() or ieee80211_tx_status_ni(). 4331 * 4332 * @hw: the hardware this frame came in on 4333 * @skb: the buffer to receive, owned by mac80211 after this call 4334 */ 4335 void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); 4336 4337 /** 4338 * ieee80211_rx_ni - receive frame (in process context) 4339 * 4340 * Like ieee80211_rx() but can be called in process context 4341 * (internally disables bottom halves). 4342 * 4343 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may 4344 * not be mixed for a single hardware. Must not run concurrently with 4345 * ieee80211_tx_status() or ieee80211_tx_status_ni(). 4346 * 4347 * @hw: the hardware this frame came in on 4348 * @skb: the buffer to receive, owned by mac80211 after this call 4349 */ 4350 static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, 4351 struct sk_buff *skb) 4352 { 4353 local_bh_disable(); 4354 ieee80211_rx(hw, skb); 4355 local_bh_enable(); 4356 } 4357 4358 /** 4359 * ieee80211_sta_ps_transition - PS transition for connected sta 4360 * 4361 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS 4362 * flag set, use this function to inform mac80211 about a connected station 4363 * entering/leaving PS mode. 4364 * 4365 * This function may not be called in IRQ context or with softirqs enabled. 4366 * 4367 * Calls to this function for a single hardware must be synchronized against 4368 * each other. 4369 * 4370 * @sta: currently connected sta 4371 * @start: start or stop PS 4372 * 4373 * Return: 0 on success. -EINVAL when the requested PS mode is already set. 4374 */ 4375 int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); 4376 4377 /** 4378 * ieee80211_sta_ps_transition_ni - PS transition for connected sta 4379 * (in process context) 4380 * 4381 * Like ieee80211_sta_ps_transition() but can be called in process context 4382 * (internally disables bottom halves). Concurrent call restriction still 4383 * applies. 4384 * 4385 * @sta: currently connected sta 4386 * @start: start or stop PS 4387 * 4388 * Return: Like ieee80211_sta_ps_transition(). 4389 */ 4390 static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, 4391 bool start) 4392 { 4393 int ret; 4394 4395 local_bh_disable(); 4396 ret = ieee80211_sta_ps_transition(sta, start); 4397 local_bh_enable(); 4398 4399 return ret; 4400 } 4401 4402 /** 4403 * ieee80211_sta_pspoll - PS-Poll frame received 4404 * @sta: currently connected station 4405 * 4406 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS flag set, 4407 * use this function to inform mac80211 that a PS-Poll frame from a 4408 * connected station was received. 4409 * This must be used in conjunction with ieee80211_sta_ps_transition() 4410 * and possibly ieee80211_sta_uapsd_trigger(); calls to all three must 4411 * be serialized. 4412 */ 4413 void ieee80211_sta_pspoll(struct ieee80211_sta *sta); 4414 4415 /** 4416 * ieee80211_sta_uapsd_trigger - (potential) U-APSD trigger frame received 4417 * @sta: currently connected station 4418 * @tid: TID of the received (potential) trigger frame 4419 * 4420 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS flag set, 4421 * use this function to inform mac80211 that a (potential) trigger frame 4422 * from a connected station was received. 4423 * This must be used in conjunction with ieee80211_sta_ps_transition() 4424 * and possibly ieee80211_sta_pspoll(); calls to all three must be 4425 * serialized. 4426 * %IEEE80211_NUM_TIDS can be passed as the tid if the tid is unknown. 4427 * In this case, mac80211 will not check that this tid maps to an AC 4428 * that is trigger enabled and assume that the caller did the proper 4429 * checks. 4430 */ 4431 void ieee80211_sta_uapsd_trigger(struct ieee80211_sta *sta, u8 tid); 4432 4433 /* 4434 * The TX headroom reserved by mac80211 for its own tx_status functions. 4435 * This is enough for the radiotap header. 4436 */ 4437 #define IEEE80211_TX_STATUS_HEADROOM ALIGN(14, 4) 4438 4439 /** 4440 * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames 4441 * @sta: &struct ieee80211_sta pointer for the sleeping station 4442 * @tid: the TID that has buffered frames 4443 * @buffered: indicates whether or not frames are buffered for this TID 4444 * 4445 * If a driver buffers frames for a powersave station instead of passing 4446 * them back to mac80211 for retransmission, the station may still need 4447 * to be told that there are buffered frames via the TIM bit. 4448 * 4449 * This function informs mac80211 whether or not there are frames that are 4450 * buffered in the driver for a given TID; mac80211 can then use this data 4451 * to set the TIM bit (NOTE: This may call back into the driver's set_tim 4452 * call! Beware of the locking!) 4453 * 4454 * If all frames are released to the station (due to PS-poll or uAPSD) 4455 * then the driver needs to inform mac80211 that there no longer are 4456 * frames buffered. However, when the station wakes up mac80211 assumes 4457 * that all buffered frames will be transmitted and clears this data, 4458 * drivers need to make sure they inform mac80211 about all buffered 4459 * frames on the sleep transition (sta_notify() with %STA_NOTIFY_SLEEP). 4460 * 4461 * Note that technically mac80211 only needs to know this per AC, not per 4462 * TID, but since driver buffering will inevitably happen per TID (since 4463 * it is related to aggregation) it is easier to make mac80211 map the 4464 * TID to the AC as required instead of keeping track in all drivers that 4465 * use this API. 4466 */ 4467 void ieee80211_sta_set_buffered(struct ieee80211_sta *sta, 4468 u8 tid, bool buffered); 4469 4470 /** 4471 * ieee80211_get_tx_rates - get the selected transmit rates for a packet 4472 * 4473 * Call this function in a driver with per-packet rate selection support 4474 * to combine the rate info in the packet tx info with the most recent 4475 * rate selection table for the station entry. 4476 * 4477 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4478 * @sta: the receiver station to which this packet is sent. 4479 * @skb: the frame to be transmitted. 4480 * @dest: buffer for extracted rate/retry information 4481 * @max_rates: maximum number of rates to fetch 4482 */ 4483 void ieee80211_get_tx_rates(struct ieee80211_vif *vif, 4484 struct ieee80211_sta *sta, 4485 struct sk_buff *skb, 4486 struct ieee80211_tx_rate *dest, 4487 int max_rates); 4488 4489 /** 4490 * ieee80211_sta_set_expected_throughput - set the expected tpt for a station 4491 * 4492 * Call this function to notify mac80211 about a change in expected throughput 4493 * to a station. A driver for a device that does rate control in firmware can 4494 * call this function when the expected throughput estimate towards a station 4495 * changes. The information is used to tune the CoDel AQM applied to traffic 4496 * going towards that station (which can otherwise be too aggressive and cause 4497 * slow stations to starve). 4498 * 4499 * @pubsta: the station to set throughput for. 4500 * @thr: the current expected throughput in kbps. 4501 */ 4502 void ieee80211_sta_set_expected_throughput(struct ieee80211_sta *pubsta, 4503 u32 thr); 4504 4505 /** 4506 * ieee80211_tx_rate_update - transmit rate update callback 4507 * 4508 * Drivers should call this functions with a non-NULL pub sta 4509 * This function can be used in drivers that does not have provision 4510 * in updating the tx rate in data path. 4511 * 4512 * @hw: the hardware the frame was transmitted by 4513 * @pubsta: the station to update the tx rate for. 4514 * @info: tx status information 4515 */ 4516 void ieee80211_tx_rate_update(struct ieee80211_hw *hw, 4517 struct ieee80211_sta *pubsta, 4518 struct ieee80211_tx_info *info); 4519 4520 /** 4521 * ieee80211_tx_status - transmit status callback 4522 * 4523 * Call this function for all transmitted frames after they have been 4524 * transmitted. It is permissible to not call this function for 4525 * multicast frames but this can affect statistics. 4526 * 4527 * This function may not be called in IRQ context. Calls to this function 4528 * for a single hardware must be synchronized against each other. Calls 4529 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() 4530 * may not be mixed for a single hardware. Must not run concurrently with 4531 * ieee80211_rx() or ieee80211_rx_ni(). 4532 * 4533 * @hw: the hardware the frame was transmitted by 4534 * @skb: the frame that was transmitted, owned by mac80211 after this call 4535 */ 4536 void ieee80211_tx_status(struct ieee80211_hw *hw, 4537 struct sk_buff *skb); 4538 4539 /** 4540 * ieee80211_tx_status_ext - extended transmit status callback 4541 * 4542 * This function can be used as a replacement for ieee80211_tx_status 4543 * in drivers that may want to provide extra information that does not 4544 * fit into &struct ieee80211_tx_info. 4545 * 4546 * Calls to this function for a single hardware must be synchronized 4547 * against each other. Calls to this function, ieee80211_tx_status_ni() 4548 * and ieee80211_tx_status_irqsafe() may not be mixed for a single hardware. 4549 * 4550 * @hw: the hardware the frame was transmitted by 4551 * @status: tx status information 4552 */ 4553 void ieee80211_tx_status_ext(struct ieee80211_hw *hw, 4554 struct ieee80211_tx_status *status); 4555 4556 /** 4557 * ieee80211_tx_status_noskb - transmit status callback without skb 4558 * 4559 * This function can be used as a replacement for ieee80211_tx_status 4560 * in drivers that cannot reliably map tx status information back to 4561 * specific skbs. 4562 * 4563 * Calls to this function for a single hardware must be synchronized 4564 * against each other. Calls to this function, ieee80211_tx_status_ni() 4565 * and ieee80211_tx_status_irqsafe() may not be mixed for a single hardware. 4566 * 4567 * @hw: the hardware the frame was transmitted by 4568 * @sta: the receiver station to which this packet is sent 4569 * (NULL for multicast packets) 4570 * @info: tx status information 4571 */ 4572 static inline void ieee80211_tx_status_noskb(struct ieee80211_hw *hw, 4573 struct ieee80211_sta *sta, 4574 struct ieee80211_tx_info *info) 4575 { 4576 struct ieee80211_tx_status status = { 4577 .sta = sta, 4578 .info = info, 4579 }; 4580 4581 ieee80211_tx_status_ext(hw, &status); 4582 } 4583 4584 /** 4585 * ieee80211_tx_status_ni - transmit status callback (in process context) 4586 * 4587 * Like ieee80211_tx_status() but can be called in process context. 4588 * 4589 * Calls to this function, ieee80211_tx_status() and 4590 * ieee80211_tx_status_irqsafe() may not be mixed 4591 * for a single hardware. 4592 * 4593 * @hw: the hardware the frame was transmitted by 4594 * @skb: the frame that was transmitted, owned by mac80211 after this call 4595 */ 4596 static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, 4597 struct sk_buff *skb) 4598 { 4599 local_bh_disable(); 4600 ieee80211_tx_status(hw, skb); 4601 local_bh_enable(); 4602 } 4603 4604 /** 4605 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback 4606 * 4607 * Like ieee80211_tx_status() but can be called in IRQ context 4608 * (internally defers to a tasklet.) 4609 * 4610 * Calls to this function, ieee80211_tx_status() and 4611 * ieee80211_tx_status_ni() may not be mixed for a single hardware. 4612 * 4613 * @hw: the hardware the frame was transmitted by 4614 * @skb: the frame that was transmitted, owned by mac80211 after this call 4615 */ 4616 void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, 4617 struct sk_buff *skb); 4618 4619 /** 4620 * ieee80211_report_low_ack - report non-responding station 4621 * 4622 * When operating in AP-mode, call this function to report a non-responding 4623 * connected STA. 4624 * 4625 * @sta: the non-responding connected sta 4626 * @num_packets: number of packets sent to @sta without a response 4627 */ 4628 void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets); 4629 4630 #define IEEE80211_MAX_CSA_COUNTERS_NUM 2 4631 4632 /** 4633 * struct ieee80211_mutable_offsets - mutable beacon offsets 4634 * @tim_offset: position of TIM element 4635 * @tim_length: size of TIM element 4636 * @csa_counter_offs: array of IEEE80211_MAX_CSA_COUNTERS_NUM offsets 4637 * to CSA counters. This array can contain zero values which 4638 * should be ignored. 4639 */ 4640 struct ieee80211_mutable_offsets { 4641 u16 tim_offset; 4642 u16 tim_length; 4643 4644 u16 csa_counter_offs[IEEE80211_MAX_CSA_COUNTERS_NUM]; 4645 }; 4646 4647 /** 4648 * ieee80211_beacon_get_template - beacon template generation function 4649 * @hw: pointer obtained from ieee80211_alloc_hw(). 4650 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4651 * @offs: &struct ieee80211_mutable_offsets pointer to struct that will 4652 * receive the offsets that may be updated by the driver. 4653 * 4654 * If the driver implements beaconing modes, it must use this function to 4655 * obtain the beacon template. 4656 * 4657 * This function should be used if the beacon frames are generated by the 4658 * device, and then the driver must use the returned beacon as the template 4659 * The driver or the device are responsible to update the DTIM and, when 4660 * applicable, the CSA count. 4661 * 4662 * The driver is responsible for freeing the returned skb. 4663 * 4664 * Return: The beacon template. %NULL on error. 4665 */ 4666 struct sk_buff * 4667 ieee80211_beacon_get_template(struct ieee80211_hw *hw, 4668 struct ieee80211_vif *vif, 4669 struct ieee80211_mutable_offsets *offs); 4670 4671 /** 4672 * ieee80211_beacon_get_tim - beacon generation function 4673 * @hw: pointer obtained from ieee80211_alloc_hw(). 4674 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4675 * @tim_offset: pointer to variable that will receive the TIM IE offset. 4676 * Set to 0 if invalid (in non-AP modes). 4677 * @tim_length: pointer to variable that will receive the TIM IE length, 4678 * (including the ID and length bytes!). 4679 * Set to 0 if invalid (in non-AP modes). 4680 * 4681 * If the driver implements beaconing modes, it must use this function to 4682 * obtain the beacon frame. 4683 * 4684 * If the beacon frames are generated by the host system (i.e., not in 4685 * hardware/firmware), the driver uses this function to get each beacon 4686 * frame from mac80211 -- it is responsible for calling this function exactly 4687 * once before the beacon is needed (e.g. based on hardware interrupt). 4688 * 4689 * The driver is responsible for freeing the returned skb. 4690 * 4691 * Return: The beacon template. %NULL on error. 4692 */ 4693 struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 4694 struct ieee80211_vif *vif, 4695 u16 *tim_offset, u16 *tim_length); 4696 4697 /** 4698 * ieee80211_beacon_get - beacon generation function 4699 * @hw: pointer obtained from ieee80211_alloc_hw(). 4700 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4701 * 4702 * See ieee80211_beacon_get_tim(). 4703 * 4704 * Return: See ieee80211_beacon_get_tim(). 4705 */ 4706 static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, 4707 struct ieee80211_vif *vif) 4708 { 4709 return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); 4710 } 4711 4712 /** 4713 * ieee80211_csa_update_counter - request mac80211 to decrement the csa counter 4714 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4715 * 4716 * The csa counter should be updated after each beacon transmission. 4717 * This function is called implicitly when 4718 * ieee80211_beacon_get/ieee80211_beacon_get_tim are called, however if the 4719 * beacon frames are generated by the device, the driver should call this 4720 * function after each beacon transmission to sync mac80211's csa counters. 4721 * 4722 * Return: new csa counter value 4723 */ 4724 u8 ieee80211_csa_update_counter(struct ieee80211_vif *vif); 4725 4726 /** 4727 * ieee80211_csa_set_counter - request mac80211 to set csa counter 4728 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4729 * @counter: the new value for the counter 4730 * 4731 * The csa counter can be changed by the device, this API should be 4732 * used by the device driver to update csa counter in mac80211. 4733 * 4734 * It should never be used together with ieee80211_csa_update_counter(), 4735 * as it will cause a race condition around the counter value. 4736 */ 4737 void ieee80211_csa_set_counter(struct ieee80211_vif *vif, u8 counter); 4738 4739 /** 4740 * ieee80211_csa_finish - notify mac80211 about channel switch 4741 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4742 * 4743 * After a channel switch announcement was scheduled and the counter in this 4744 * announcement hits 1, this function must be called by the driver to 4745 * notify mac80211 that the channel can be changed. 4746 */ 4747 void ieee80211_csa_finish(struct ieee80211_vif *vif); 4748 4749 /** 4750 * ieee80211_csa_is_complete - find out if counters reached 1 4751 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4752 * 4753 * This function returns whether the channel switch counters reached zero. 4754 */ 4755 bool ieee80211_csa_is_complete(struct ieee80211_vif *vif); 4756 4757 4758 /** 4759 * ieee80211_proberesp_get - retrieve a Probe Response template 4760 * @hw: pointer obtained from ieee80211_alloc_hw(). 4761 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4762 * 4763 * Creates a Probe Response template which can, for example, be uploaded to 4764 * hardware. The destination address should be set by the caller. 4765 * 4766 * Can only be called in AP mode. 4767 * 4768 * Return: The Probe Response template. %NULL on error. 4769 */ 4770 struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw, 4771 struct ieee80211_vif *vif); 4772 4773 /** 4774 * ieee80211_pspoll_get - retrieve a PS Poll template 4775 * @hw: pointer obtained from ieee80211_alloc_hw(). 4776 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4777 * 4778 * Creates a PS Poll a template which can, for example, uploaded to 4779 * hardware. The template must be updated after association so that correct 4780 * AID, BSSID and MAC address is used. 4781 * 4782 * Note: Caller (or hardware) is responsible for setting the 4783 * &IEEE80211_FCTL_PM bit. 4784 * 4785 * Return: The PS Poll template. %NULL on error. 4786 */ 4787 struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, 4788 struct ieee80211_vif *vif); 4789 4790 /** 4791 * ieee80211_nullfunc_get - retrieve a nullfunc template 4792 * @hw: pointer obtained from ieee80211_alloc_hw(). 4793 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4794 * @qos_ok: QoS NDP is acceptable to the caller, this should be set 4795 * if at all possible 4796 * 4797 * Creates a Nullfunc template which can, for example, uploaded to 4798 * hardware. The template must be updated after association so that correct 4799 * BSSID and address is used. 4800 * 4801 * If @qos_ndp is set and the association is to an AP with QoS/WMM, the 4802 * returned packet will be QoS NDP. 4803 * 4804 * Note: Caller (or hardware) is responsible for setting the 4805 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. 4806 * 4807 * Return: The nullfunc template. %NULL on error. 4808 */ 4809 struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, 4810 struct ieee80211_vif *vif, 4811 bool qos_ok); 4812 4813 /** 4814 * ieee80211_probereq_get - retrieve a Probe Request template 4815 * @hw: pointer obtained from ieee80211_alloc_hw(). 4816 * @src_addr: source MAC address 4817 * @ssid: SSID buffer 4818 * @ssid_len: length of SSID 4819 * @tailroom: tailroom to reserve at end of SKB for IEs 4820 * 4821 * Creates a Probe Request template which can, for example, be uploaded to 4822 * hardware. 4823 * 4824 * Return: The Probe Request template. %NULL on error. 4825 */ 4826 struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, 4827 const u8 *src_addr, 4828 const u8 *ssid, size_t ssid_len, 4829 size_t tailroom); 4830 4831 /** 4832 * ieee80211_rts_get - RTS frame generation function 4833 * @hw: pointer obtained from ieee80211_alloc_hw(). 4834 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4835 * @frame: pointer to the frame that is going to be protected by the RTS. 4836 * @frame_len: the frame length (in octets). 4837 * @frame_txctl: &struct ieee80211_tx_info of the frame. 4838 * @rts: The buffer where to store the RTS frame. 4839 * 4840 * If the RTS frames are generated by the host system (i.e., not in 4841 * hardware/firmware), the low-level driver uses this function to receive 4842 * the next RTS frame from the 802.11 code. The low-level is responsible 4843 * for calling this function before and RTS frame is needed. 4844 */ 4845 void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 4846 const void *frame, size_t frame_len, 4847 const struct ieee80211_tx_info *frame_txctl, 4848 struct ieee80211_rts *rts); 4849 4850 /** 4851 * ieee80211_rts_duration - Get the duration field for an RTS frame 4852 * @hw: pointer obtained from ieee80211_alloc_hw(). 4853 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4854 * @frame_len: the length of the frame that is going to be protected by the RTS. 4855 * @frame_txctl: &struct ieee80211_tx_info of the frame. 4856 * 4857 * If the RTS is generated in firmware, but the host system must provide 4858 * the duration field, the low-level driver uses this function to receive 4859 * the duration field value in little-endian byteorder. 4860 * 4861 * Return: The duration. 4862 */ 4863 __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 4864 struct ieee80211_vif *vif, size_t frame_len, 4865 const struct ieee80211_tx_info *frame_txctl); 4866 4867 /** 4868 * ieee80211_ctstoself_get - CTS-to-self frame generation function 4869 * @hw: pointer obtained from ieee80211_alloc_hw(). 4870 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4871 * @frame: pointer to the frame that is going to be protected by the CTS-to-self. 4872 * @frame_len: the frame length (in octets). 4873 * @frame_txctl: &struct ieee80211_tx_info of the frame. 4874 * @cts: The buffer where to store the CTS-to-self frame. 4875 * 4876 * If the CTS-to-self frames are generated by the host system (i.e., not in 4877 * hardware/firmware), the low-level driver uses this function to receive 4878 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible 4879 * for calling this function before and CTS-to-self frame is needed. 4880 */ 4881 void ieee80211_ctstoself_get(struct ieee80211_hw *hw, 4882 struct ieee80211_vif *vif, 4883 const void *frame, size_t frame_len, 4884 const struct ieee80211_tx_info *frame_txctl, 4885 struct ieee80211_cts *cts); 4886 4887 /** 4888 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame 4889 * @hw: pointer obtained from ieee80211_alloc_hw(). 4890 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4891 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. 4892 * @frame_txctl: &struct ieee80211_tx_info of the frame. 4893 * 4894 * If the CTS-to-self is generated in firmware, but the host system must provide 4895 * the duration field, the low-level driver uses this function to receive 4896 * the duration field value in little-endian byteorder. 4897 * 4898 * Return: The duration. 4899 */ 4900 __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 4901 struct ieee80211_vif *vif, 4902 size_t frame_len, 4903 const struct ieee80211_tx_info *frame_txctl); 4904 4905 /** 4906 * ieee80211_generic_frame_duration - Calculate the duration field for a frame 4907 * @hw: pointer obtained from ieee80211_alloc_hw(). 4908 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4909 * @band: the band to calculate the frame duration on 4910 * @frame_len: the length of the frame. 4911 * @rate: the rate at which the frame is going to be transmitted. 4912 * 4913 * Calculate the duration field of some generic frame, given its 4914 * length and transmission rate (in 100kbps). 4915 * 4916 * Return: The duration. 4917 */ 4918 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 4919 struct ieee80211_vif *vif, 4920 enum nl80211_band band, 4921 size_t frame_len, 4922 struct ieee80211_rate *rate); 4923 4924 /** 4925 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames 4926 * @hw: pointer as obtained from ieee80211_alloc_hw(). 4927 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4928 * 4929 * Function for accessing buffered broadcast and multicast frames. If 4930 * hardware/firmware does not implement buffering of broadcast/multicast 4931 * frames when power saving is used, 802.11 code buffers them in the host 4932 * memory. The low-level driver uses this function to fetch next buffered 4933 * frame. In most cases, this is used when generating beacon frame. 4934 * 4935 * Return: A pointer to the next buffered skb or NULL if no more buffered 4936 * frames are available. 4937 * 4938 * Note: buffered frames are returned only after DTIM beacon frame was 4939 * generated with ieee80211_beacon_get() and the low-level driver must thus 4940 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns 4941 * NULL if the previous generated beacon was not DTIM, so the low-level driver 4942 * does not need to check for DTIM beacons separately and should be able to 4943 * use common code for all beacons. 4944 */ 4945 struct sk_buff * 4946 ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 4947 4948 /** 4949 * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32 4950 * 4951 * This function returns the TKIP phase 1 key for the given IV32. 4952 * 4953 * @keyconf: the parameter passed with the set key 4954 * @iv32: IV32 to get the P1K for 4955 * @p1k: a buffer to which the key will be written, as 5 u16 values 4956 */ 4957 void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, 4958 u32 iv32, u16 *p1k); 4959 4960 /** 4961 * ieee80211_get_tkip_p1k - get a TKIP phase 1 key 4962 * 4963 * This function returns the TKIP phase 1 key for the IV32 taken 4964 * from the given packet. 4965 * 4966 * @keyconf: the parameter passed with the set key 4967 * @skb: the packet to take the IV32 value from that will be encrypted 4968 * with this P1K 4969 * @p1k: a buffer to which the key will be written, as 5 u16 values 4970 */ 4971 static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, 4972 struct sk_buff *skb, u16 *p1k) 4973 { 4974 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 4975 const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); 4976 u32 iv32 = get_unaligned_le32(&data[4]); 4977 4978 ieee80211_get_tkip_p1k_iv(keyconf, iv32, p1k); 4979 } 4980 4981 /** 4982 * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX 4983 * 4984 * This function returns the TKIP phase 1 key for the given IV32 4985 * and transmitter address. 4986 * 4987 * @keyconf: the parameter passed with the set key 4988 * @ta: TA that will be used with the key 4989 * @iv32: IV32 to get the P1K for 4990 * @p1k: a buffer to which the key will be written, as 5 u16 values 4991 */ 4992 void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, 4993 const u8 *ta, u32 iv32, u16 *p1k); 4994 4995 /** 4996 * ieee80211_get_tkip_p2k - get a TKIP phase 2 key 4997 * 4998 * This function computes the TKIP RC4 key for the IV values 4999 * in the packet. 5000 * 5001 * @keyconf: the parameter passed with the set key 5002 * @skb: the packet to take the IV32/IV16 values from that will be 5003 * encrypted with this key 5004 * @p2k: a buffer to which the key will be written, 16 bytes 5005 */ 5006 void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, 5007 struct sk_buff *skb, u8 *p2k); 5008 5009 /** 5010 * ieee80211_tkip_add_iv - write TKIP IV and Ext. IV to pos 5011 * 5012 * @pos: start of crypto header 5013 * @keyconf: the parameter passed with the set key 5014 * @pn: PN to add 5015 * 5016 * Returns: pointer to the octet following IVs (i.e. beginning of 5017 * the packet payload) 5018 * 5019 * This function writes the tkip IV value to pos (which should 5020 * point to the crypto header) 5021 */ 5022 u8 *ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key_conf *keyconf, u64 pn); 5023 5024 /** 5025 * ieee80211_get_key_rx_seq - get key RX sequence counter 5026 * 5027 * @keyconf: the parameter passed with the set key 5028 * @tid: The TID, or -1 for the management frame value (CCMP/GCMP only); 5029 * the value on TID 0 is also used for non-QoS frames. For 5030 * CMAC, only TID 0 is valid. 5031 * @seq: buffer to receive the sequence data 5032 * 5033 * This function allows a driver to retrieve the current RX IV/PNs 5034 * for the given key. It must not be called if IV checking is done 5035 * by the device and not by mac80211. 5036 * 5037 * Note that this function may only be called when no RX processing 5038 * can be done concurrently. 5039 */ 5040 void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf, 5041 int tid, struct ieee80211_key_seq *seq); 5042 5043 /** 5044 * ieee80211_set_key_rx_seq - set key RX sequence counter 5045 * 5046 * @keyconf: the parameter passed with the set key 5047 * @tid: The TID, or -1 for the management frame value (CCMP/GCMP only); 5048 * the value on TID 0 is also used for non-QoS frames. For 5049 * CMAC, only TID 0 is valid. 5050 * @seq: new sequence data 5051 * 5052 * This function allows a driver to set the current RX IV/PNs for the 5053 * given key. This is useful when resuming from WoWLAN sleep and GTK 5054 * rekey may have been done while suspended. It should not be called 5055 * if IV checking is done by the device and not by mac80211. 5056 * 5057 * Note that this function may only be called when no RX processing 5058 * can be done concurrently. 5059 */ 5060 void ieee80211_set_key_rx_seq(struct ieee80211_key_conf *keyconf, 5061 int tid, struct ieee80211_key_seq *seq); 5062 5063 /** 5064 * ieee80211_remove_key - remove the given key 5065 * @keyconf: the parameter passed with the set key 5066 * 5067 * Remove the given key. If the key was uploaded to the hardware at the 5068 * time this function is called, it is not deleted in the hardware but 5069 * instead assumed to have been removed already. 5070 * 5071 * Note that due to locking considerations this function can (currently) 5072 * only be called during key iteration (ieee80211_iter_keys().) 5073 */ 5074 void ieee80211_remove_key(struct ieee80211_key_conf *keyconf); 5075 5076 /** 5077 * ieee80211_gtk_rekey_add - add a GTK key from rekeying during WoWLAN 5078 * @vif: the virtual interface to add the key on 5079 * @keyconf: new key data 5080 * 5081 * When GTK rekeying was done while the system was suspended, (a) new 5082 * key(s) will be available. These will be needed by mac80211 for proper 5083 * RX processing, so this function allows setting them. 5084 * 5085 * The function returns the newly allocated key structure, which will 5086 * have similar contents to the passed key configuration but point to 5087 * mac80211-owned memory. In case of errors, the function returns an 5088 * ERR_PTR(), use IS_ERR() etc. 5089 * 5090 * Note that this function assumes the key isn't added to hardware 5091 * acceleration, so no TX will be done with the key. Since it's a GTK 5092 * on managed (station) networks, this is true anyway. If the driver 5093 * calls this function from the resume callback and subsequently uses 5094 * the return code 1 to reconfigure the device, this key will be part 5095 * of the reconfiguration. 5096 * 5097 * Note that the driver should also call ieee80211_set_key_rx_seq() 5098 * for the new key for each TID to set up sequence counters properly. 5099 * 5100 * IMPORTANT: If this replaces a key that is present in the hardware, 5101 * then it will attempt to remove it during this call. In many cases 5102 * this isn't what you want, so call ieee80211_remove_key() first for 5103 * the key that's being replaced. 5104 */ 5105 struct ieee80211_key_conf * 5106 ieee80211_gtk_rekey_add(struct ieee80211_vif *vif, 5107 struct ieee80211_key_conf *keyconf); 5108 5109 /** 5110 * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying 5111 * @vif: virtual interface the rekeying was done on 5112 * @bssid: The BSSID of the AP, for checking association 5113 * @replay_ctr: the new replay counter after GTK rekeying 5114 * @gfp: allocation flags 5115 */ 5116 void ieee80211_gtk_rekey_notify(struct ieee80211_vif *vif, const u8 *bssid, 5117 const u8 *replay_ctr, gfp_t gfp); 5118 5119 /** 5120 * ieee80211_wake_queue - wake specific queue 5121 * @hw: pointer as obtained from ieee80211_alloc_hw(). 5122 * @queue: queue number (counted from zero). 5123 * 5124 * Drivers should use this function instead of netif_wake_queue. 5125 */ 5126 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); 5127 5128 /** 5129 * ieee80211_stop_queue - stop specific queue 5130 * @hw: pointer as obtained from ieee80211_alloc_hw(). 5131 * @queue: queue number (counted from zero). 5132 * 5133 * Drivers should use this function instead of netif_stop_queue. 5134 */ 5135 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); 5136 5137 /** 5138 * ieee80211_queue_stopped - test status of the queue 5139 * @hw: pointer as obtained from ieee80211_alloc_hw(). 5140 * @queue: queue number (counted from zero). 5141 * 5142 * Drivers should use this function instead of netif_stop_queue. 5143 * 5144 * Return: %true if the queue is stopped. %false otherwise. 5145 */ 5146 5147 int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); 5148 5149 /** 5150 * ieee80211_stop_queues - stop all queues 5151 * @hw: pointer as obtained from ieee80211_alloc_hw(). 5152 * 5153 * Drivers should use this function instead of netif_stop_queue. 5154 */ 5155 void ieee80211_stop_queues(struct ieee80211_hw *hw); 5156 5157 /** 5158 * ieee80211_wake_queues - wake all queues 5159 * @hw: pointer as obtained from ieee80211_alloc_hw(). 5160 * 5161 * Drivers should use this function instead of netif_wake_queue. 5162 */ 5163 void ieee80211_wake_queues(struct ieee80211_hw *hw); 5164 5165 /** 5166 * ieee80211_scan_completed - completed hardware scan 5167 * 5168 * When hardware scan offload is used (i.e. the hw_scan() callback is 5169 * assigned) this function needs to be called by the driver to notify 5170 * mac80211 that the scan finished. This function can be called from 5171 * any context, including hardirq context. 5172 * 5173 * @hw: the hardware that finished the scan 5174 * @info: information about the completed scan 5175 */ 5176 void ieee80211_scan_completed(struct ieee80211_hw *hw, 5177 struct cfg80211_scan_info *info); 5178 5179 /** 5180 * ieee80211_sched_scan_results - got results from scheduled scan 5181 * 5182 * When a scheduled scan is running, this function needs to be called by the 5183 * driver whenever there are new scan results available. 5184 * 5185 * @hw: the hardware that is performing scheduled scans 5186 */ 5187 void ieee80211_sched_scan_results(struct ieee80211_hw *hw); 5188 5189 /** 5190 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped 5191 * 5192 * When a scheduled scan is running, this function can be called by 5193 * the driver if it needs to stop the scan to perform another task. 5194 * Usual scenarios are drivers that cannot continue the scheduled scan 5195 * while associating, for instance. 5196 * 5197 * @hw: the hardware that is performing scheduled scans 5198 */ 5199 void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw); 5200 5201 /** 5202 * enum ieee80211_interface_iteration_flags - interface iteration flags 5203 * @IEEE80211_IFACE_ITER_NORMAL: Iterate over all interfaces that have 5204 * been added to the driver; However, note that during hardware 5205 * reconfiguration (after restart_hw) it will iterate over a new 5206 * interface and over all the existing interfaces even if they 5207 * haven't been re-added to the driver yet. 5208 * @IEEE80211_IFACE_ITER_RESUME_ALL: During resume, iterate over all 5209 * interfaces, even if they haven't been re-added to the driver yet. 5210 * @IEEE80211_IFACE_ITER_ACTIVE: Iterate only active interfaces (netdev is up). 5211 */ 5212 enum ieee80211_interface_iteration_flags { 5213 IEEE80211_IFACE_ITER_NORMAL = 0, 5214 IEEE80211_IFACE_ITER_RESUME_ALL = BIT(0), 5215 IEEE80211_IFACE_ITER_ACTIVE = BIT(1), 5216 }; 5217 5218 /** 5219 * ieee80211_iterate_interfaces - iterate interfaces 5220 * 5221 * This function iterates over the interfaces associated with a given 5222 * hardware and calls the callback for them. This includes active as well as 5223 * inactive interfaces. This function allows the iterator function to sleep. 5224 * Will iterate over a new interface during add_interface(). 5225 * 5226 * @hw: the hardware struct of which the interfaces should be iterated over 5227 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 5228 * @iterator: the iterator function to call 5229 * @data: first argument of the iterator function 5230 */ 5231 void ieee80211_iterate_interfaces(struct ieee80211_hw *hw, u32 iter_flags, 5232 void (*iterator)(void *data, u8 *mac, 5233 struct ieee80211_vif *vif), 5234 void *data); 5235 5236 /** 5237 * ieee80211_iterate_active_interfaces - iterate active interfaces 5238 * 5239 * This function iterates over the interfaces associated with a given 5240 * hardware that are currently active and calls the callback for them. 5241 * This function allows the iterator function to sleep, when the iterator 5242 * function is atomic @ieee80211_iterate_active_interfaces_atomic can 5243 * be used. 5244 * Does not iterate over a new interface during add_interface(). 5245 * 5246 * @hw: the hardware struct of which the interfaces should be iterated over 5247 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 5248 * @iterator: the iterator function to call 5249 * @data: first argument of the iterator function 5250 */ 5251 static inline void 5252 ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, u32 iter_flags, 5253 void (*iterator)(void *data, u8 *mac, 5254 struct ieee80211_vif *vif), 5255 void *data) 5256 { 5257 ieee80211_iterate_interfaces(hw, 5258 iter_flags | IEEE80211_IFACE_ITER_ACTIVE, 5259 iterator, data); 5260 } 5261 5262 /** 5263 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces 5264 * 5265 * This function iterates over the interfaces associated with a given 5266 * hardware that are currently active and calls the callback for them. 5267 * This function requires the iterator callback function to be atomic, 5268 * if that is not desired, use @ieee80211_iterate_active_interfaces instead. 5269 * Does not iterate over a new interface during add_interface(). 5270 * 5271 * @hw: the hardware struct of which the interfaces should be iterated over 5272 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 5273 * @iterator: the iterator function to call, cannot sleep 5274 * @data: first argument of the iterator function 5275 */ 5276 void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, 5277 u32 iter_flags, 5278 void (*iterator)(void *data, 5279 u8 *mac, 5280 struct ieee80211_vif *vif), 5281 void *data); 5282 5283 /** 5284 * ieee80211_iterate_active_interfaces_rtnl - iterate active interfaces 5285 * 5286 * This function iterates over the interfaces associated with a given 5287 * hardware that are currently active and calls the callback for them. 5288 * This version can only be used while holding the RTNL. 5289 * 5290 * @hw: the hardware struct of which the interfaces should be iterated over 5291 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 5292 * @iterator: the iterator function to call, cannot sleep 5293 * @data: first argument of the iterator function 5294 */ 5295 void ieee80211_iterate_active_interfaces_rtnl(struct ieee80211_hw *hw, 5296 u32 iter_flags, 5297 void (*iterator)(void *data, 5298 u8 *mac, 5299 struct ieee80211_vif *vif), 5300 void *data); 5301 5302 /** 5303 * ieee80211_iterate_stations_atomic - iterate stations 5304 * 5305 * This function iterates over all stations associated with a given 5306 * hardware that are currently uploaded to the driver and calls the callback 5307 * function for them. 5308 * This function requires the iterator callback function to be atomic, 5309 * 5310 * @hw: the hardware struct of which the interfaces should be iterated over 5311 * @iterator: the iterator function to call, cannot sleep 5312 * @data: first argument of the iterator function 5313 */ 5314 void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, 5315 void (*iterator)(void *data, 5316 struct ieee80211_sta *sta), 5317 void *data); 5318 /** 5319 * ieee80211_queue_work - add work onto the mac80211 workqueue 5320 * 5321 * Drivers and mac80211 use this to add work onto the mac80211 workqueue. 5322 * This helper ensures drivers are not queueing work when they should not be. 5323 * 5324 * @hw: the hardware struct for the interface we are adding work for 5325 * @work: the work we want to add onto the mac80211 workqueue 5326 */ 5327 void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); 5328 5329 /** 5330 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue 5331 * 5332 * Drivers and mac80211 use this to queue delayed work onto the mac80211 5333 * workqueue. 5334 * 5335 * @hw: the hardware struct for the interface we are adding work for 5336 * @dwork: delayable work to queue onto the mac80211 workqueue 5337 * @delay: number of jiffies to wait before queueing 5338 */ 5339 void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 5340 struct delayed_work *dwork, 5341 unsigned long delay); 5342 5343 /** 5344 * ieee80211_start_tx_ba_session - Start a tx Block Ack session. 5345 * @sta: the station for which to start a BA session 5346 * @tid: the TID to BA on. 5347 * @timeout: session timeout value (in TUs) 5348 * 5349 * Return: success if addBA request was sent, failure otherwise 5350 * 5351 * Although mac80211/low level driver/user space application can estimate 5352 * the need to start aggregation on a certain RA/TID, the session level 5353 * will be managed by the mac80211. 5354 */ 5355 int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, 5356 u16 timeout); 5357 5358 /** 5359 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. 5360 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5361 * @ra: receiver address of the BA session recipient. 5362 * @tid: the TID to BA on. 5363 * 5364 * This function must be called by low level driver once it has 5365 * finished with preparations for the BA session. It can be called 5366 * from any context. 5367 */ 5368 void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 5369 u16 tid); 5370 5371 /** 5372 * ieee80211_stop_tx_ba_session - Stop a Block Ack session. 5373 * @sta: the station whose BA session to stop 5374 * @tid: the TID to stop BA. 5375 * 5376 * Return: negative error if the TID is invalid, or no aggregation active 5377 * 5378 * Although mac80211/low level driver/user space application can estimate 5379 * the need to stop aggregation on a certain RA/TID, the session level 5380 * will be managed by the mac80211. 5381 */ 5382 int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); 5383 5384 /** 5385 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. 5386 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5387 * @ra: receiver address of the BA session recipient. 5388 * @tid: the desired TID to BA on. 5389 * 5390 * This function must be called by low level driver once it has 5391 * finished with preparations for the BA session tear down. It 5392 * can be called from any context. 5393 */ 5394 void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 5395 u16 tid); 5396 5397 /** 5398 * ieee80211_find_sta - find a station 5399 * 5400 * @vif: virtual interface to look for station on 5401 * @addr: station's address 5402 * 5403 * Return: The station, if found. %NULL otherwise. 5404 * 5405 * Note: This function must be called under RCU lock and the 5406 * resulting pointer is only valid under RCU lock as well. 5407 */ 5408 struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, 5409 const u8 *addr); 5410 5411 /** 5412 * ieee80211_find_sta_by_ifaddr - find a station on hardware 5413 * 5414 * @hw: pointer as obtained from ieee80211_alloc_hw() 5415 * @addr: remote station's address 5416 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. 5417 * 5418 * Return: The station, if found. %NULL otherwise. 5419 * 5420 * Note: This function must be called under RCU lock and the 5421 * resulting pointer is only valid under RCU lock as well. 5422 * 5423 * NOTE: You may pass NULL for localaddr, but then you will just get 5424 * the first STA that matches the remote address 'addr'. 5425 * We can have multiple STA associated with multiple 5426 * logical stations (e.g. consider a station connecting to another 5427 * BSSID on the same AP hardware without disconnecting first). 5428 * In this case, the result of this method with localaddr NULL 5429 * is not reliable. 5430 * 5431 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. 5432 */ 5433 struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, 5434 const u8 *addr, 5435 const u8 *localaddr); 5436 5437 /** 5438 * ieee80211_sta_block_awake - block station from waking up 5439 * @hw: the hardware 5440 * @pubsta: the station 5441 * @block: whether to block or unblock 5442 * 5443 * Some devices require that all frames that are on the queues 5444 * for a specific station that went to sleep are flushed before 5445 * a poll response or frames after the station woke up can be 5446 * delivered to that it. Note that such frames must be rejected 5447 * by the driver as filtered, with the appropriate status flag. 5448 * 5449 * This function allows implementing this mode in a race-free 5450 * manner. 5451 * 5452 * To do this, a driver must keep track of the number of frames 5453 * still enqueued for a specific station. If this number is not 5454 * zero when the station goes to sleep, the driver must call 5455 * this function to force mac80211 to consider the station to 5456 * be asleep regardless of the station's actual state. Once the 5457 * number of outstanding frames reaches zero, the driver must 5458 * call this function again to unblock the station. That will 5459 * cause mac80211 to be able to send ps-poll responses, and if 5460 * the station queried in the meantime then frames will also 5461 * be sent out as a result of this. Additionally, the driver 5462 * will be notified that the station woke up some time after 5463 * it is unblocked, regardless of whether the station actually 5464 * woke up while blocked or not. 5465 */ 5466 void ieee80211_sta_block_awake(struct ieee80211_hw *hw, 5467 struct ieee80211_sta *pubsta, bool block); 5468 5469 /** 5470 * ieee80211_sta_eosp - notify mac80211 about end of SP 5471 * @pubsta: the station 5472 * 5473 * When a device transmits frames in a way that it can't tell 5474 * mac80211 in the TX status about the EOSP, it must clear the 5475 * %IEEE80211_TX_STATUS_EOSP bit and call this function instead. 5476 * This applies for PS-Poll as well as uAPSD. 5477 * 5478 * Note that just like with _tx_status() and _rx() drivers must 5479 * not mix calls to irqsafe/non-irqsafe versions, this function 5480 * must not be mixed with those either. Use the all irqsafe, or 5481 * all non-irqsafe, don't mix! 5482 * 5483 * NB: the _irqsafe version of this function doesn't exist, no 5484 * driver needs it right now. Don't call this function if 5485 * you'd need the _irqsafe version, look at the git history 5486 * and restore the _irqsafe version! 5487 */ 5488 void ieee80211_sta_eosp(struct ieee80211_sta *pubsta); 5489 5490 /** 5491 * ieee80211_send_eosp_nullfunc - ask mac80211 to send NDP with EOSP 5492 * @pubsta: the station 5493 * @tid: the tid of the NDP 5494 * 5495 * Sometimes the device understands that it needs to close 5496 * the Service Period unexpectedly. This can happen when 5497 * sending frames that are filling holes in the BA window. 5498 * In this case, the device can ask mac80211 to send a 5499 * Nullfunc frame with EOSP set. When that happens, the 5500 * driver must have called ieee80211_sta_set_buffered() to 5501 * let mac80211 know that there are no buffered frames any 5502 * more, otherwise mac80211 will get the more_data bit wrong. 5503 * The low level driver must have made sure that the frame 5504 * will be sent despite the station being in power-save. 5505 * Mac80211 won't call allow_buffered_frames(). 5506 * Note that calling this function, doesn't exempt the driver 5507 * from closing the EOSP properly, it will still have to call 5508 * ieee80211_sta_eosp when the NDP is sent. 5509 */ 5510 void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid); 5511 5512 /** 5513 * ieee80211_sta_register_airtime - register airtime usage for a sta/tid 5514 * 5515 * Register airtime usage for a given sta on a given tid. The driver can call 5516 * this function to notify mac80211 that a station used a certain amount of 5517 * airtime. This information will be used by the TXQ scheduler to schedule 5518 * stations in a way that ensures airtime fairness. 5519 * 5520 * The reported airtime should as a minimum include all time that is spent 5521 * transmitting to the remote station, including overhead and padding, but not 5522 * including time spent waiting for a TXOP. If the time is not reported by the 5523 * hardware it can in some cases be calculated from the rate and known frame 5524 * composition. When possible, the time should include any failed transmission 5525 * attempts. 5526 * 5527 * The driver can either call this function synchronously for every packet or 5528 * aggregate, or asynchronously as airtime usage information becomes available. 5529 * TX and RX airtime can be reported together, or separately by setting one of 5530 * them to 0. 5531 * 5532 * @pubsta: the station 5533 * @tid: the TID to register airtime for 5534 * @tx_airtime: airtime used during TX (in usec) 5535 * @rx_airtime: airtime used during RX (in usec) 5536 */ 5537 void ieee80211_sta_register_airtime(struct ieee80211_sta *pubsta, u8 tid, 5538 u32 tx_airtime, u32 rx_airtime); 5539 5540 /** 5541 * ieee80211_iter_keys - iterate keys programmed into the device 5542 * @hw: pointer obtained from ieee80211_alloc_hw() 5543 * @vif: virtual interface to iterate, may be %NULL for all 5544 * @iter: iterator function that will be called for each key 5545 * @iter_data: custom data to pass to the iterator function 5546 * 5547 * This function can be used to iterate all the keys known to 5548 * mac80211, even those that weren't previously programmed into 5549 * the device. This is intended for use in WoWLAN if the device 5550 * needs reprogramming of the keys during suspend. Note that due 5551 * to locking reasons, it is also only safe to call this at few 5552 * spots since it must hold the RTNL and be able to sleep. 5553 * 5554 * The order in which the keys are iterated matches the order 5555 * in which they were originally installed and handed to the 5556 * set_key callback. 5557 */ 5558 void ieee80211_iter_keys(struct ieee80211_hw *hw, 5559 struct ieee80211_vif *vif, 5560 void (*iter)(struct ieee80211_hw *hw, 5561 struct ieee80211_vif *vif, 5562 struct ieee80211_sta *sta, 5563 struct ieee80211_key_conf *key, 5564 void *data), 5565 void *iter_data); 5566 5567 /** 5568 * ieee80211_iter_keys_rcu - iterate keys programmed into the device 5569 * @hw: pointer obtained from ieee80211_alloc_hw() 5570 * @vif: virtual interface to iterate, may be %NULL for all 5571 * @iter: iterator function that will be called for each key 5572 * @iter_data: custom data to pass to the iterator function 5573 * 5574 * This function can be used to iterate all the keys known to 5575 * mac80211, even those that weren't previously programmed into 5576 * the device. Note that due to locking reasons, keys of station 5577 * in removal process will be skipped. 5578 * 5579 * This function requires being called in an RCU critical section, 5580 * and thus iter must be atomic. 5581 */ 5582 void ieee80211_iter_keys_rcu(struct ieee80211_hw *hw, 5583 struct ieee80211_vif *vif, 5584 void (*iter)(struct ieee80211_hw *hw, 5585 struct ieee80211_vif *vif, 5586 struct ieee80211_sta *sta, 5587 struct ieee80211_key_conf *key, 5588 void *data), 5589 void *iter_data); 5590 5591 /** 5592 * ieee80211_iter_chan_contexts_atomic - iterate channel contexts 5593 * @hw: pointre obtained from ieee80211_alloc_hw(). 5594 * @iter: iterator function 5595 * @iter_data: data passed to iterator function 5596 * 5597 * Iterate all active channel contexts. This function is atomic and 5598 * doesn't acquire any locks internally that might be held in other 5599 * places while calling into the driver. 5600 * 5601 * The iterator will not find a context that's being added (during 5602 * the driver callback to add it) but will find it while it's being 5603 * removed. 5604 * 5605 * Note that during hardware restart, all contexts that existed 5606 * before the restart are considered already present so will be 5607 * found while iterating, whether they've been re-added already 5608 * or not. 5609 */ 5610 void ieee80211_iter_chan_contexts_atomic( 5611 struct ieee80211_hw *hw, 5612 void (*iter)(struct ieee80211_hw *hw, 5613 struct ieee80211_chanctx_conf *chanctx_conf, 5614 void *data), 5615 void *iter_data); 5616 5617 /** 5618 * ieee80211_ap_probereq_get - retrieve a Probe Request template 5619 * @hw: pointer obtained from ieee80211_alloc_hw(). 5620 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5621 * 5622 * Creates a Probe Request template which can, for example, be uploaded to 5623 * hardware. The template is filled with bssid, ssid and supported rate 5624 * information. This function must only be called from within the 5625 * .bss_info_changed callback function and only in managed mode. The function 5626 * is only useful when the interface is associated, otherwise it will return 5627 * %NULL. 5628 * 5629 * Return: The Probe Request template. %NULL on error. 5630 */ 5631 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 5632 struct ieee80211_vif *vif); 5633 5634 /** 5635 * ieee80211_beacon_loss - inform hardware does not receive beacons 5636 * 5637 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5638 * 5639 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER and 5640 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the 5641 * hardware is not receiving beacons with this function. 5642 */ 5643 void ieee80211_beacon_loss(struct ieee80211_vif *vif); 5644 5645 /** 5646 * ieee80211_connection_loss - inform hardware has lost connection to the AP 5647 * 5648 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5649 * 5650 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER, and 5651 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver 5652 * needs to inform if the connection to the AP has been lost. 5653 * The function may also be called if the connection needs to be terminated 5654 * for some other reason, even if %IEEE80211_HW_CONNECTION_MONITOR isn't set. 5655 * 5656 * This function will cause immediate change to disassociated state, 5657 * without connection recovery attempts. 5658 */ 5659 void ieee80211_connection_loss(struct ieee80211_vif *vif); 5660 5661 /** 5662 * ieee80211_resume_disconnect - disconnect from AP after resume 5663 * 5664 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5665 * 5666 * Instructs mac80211 to disconnect from the AP after resume. 5667 * Drivers can use this after WoWLAN if they know that the 5668 * connection cannot be kept up, for example because keys were 5669 * used while the device was asleep but the replay counters or 5670 * similar cannot be retrieved from the device during resume. 5671 * 5672 * Note that due to implementation issues, if the driver uses 5673 * the reconfiguration functionality during resume the interface 5674 * will still be added as associated first during resume and then 5675 * disconnect normally later. 5676 * 5677 * This function can only be called from the resume callback and 5678 * the driver must not be holding any of its own locks while it 5679 * calls this function, or at least not any locks it needs in the 5680 * key configuration paths (if it supports HW crypto). 5681 */ 5682 void ieee80211_resume_disconnect(struct ieee80211_vif *vif); 5683 5684 /** 5685 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring 5686 * rssi threshold triggered 5687 * 5688 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5689 * @rssi_event: the RSSI trigger event type 5690 * @rssi_level: new RSSI level value or 0 if not available 5691 * @gfp: context flags 5692 * 5693 * When the %IEEE80211_VIF_SUPPORTS_CQM_RSSI is set, and a connection quality 5694 * monitoring is configured with an rssi threshold, the driver will inform 5695 * whenever the rssi level reaches the threshold. 5696 */ 5697 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 5698 enum nl80211_cqm_rssi_threshold_event rssi_event, 5699 s32 rssi_level, 5700 gfp_t gfp); 5701 5702 /** 5703 * ieee80211_cqm_beacon_loss_notify - inform CQM of beacon loss 5704 * 5705 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5706 * @gfp: context flags 5707 */ 5708 void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp); 5709 5710 /** 5711 * ieee80211_radar_detected - inform that a radar was detected 5712 * 5713 * @hw: pointer as obtained from ieee80211_alloc_hw() 5714 */ 5715 void ieee80211_radar_detected(struct ieee80211_hw *hw); 5716 5717 /** 5718 * ieee80211_chswitch_done - Complete channel switch process 5719 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5720 * @success: make the channel switch successful or not 5721 * 5722 * Complete the channel switch post-process: set the new operational channel 5723 * and wake up the suspended queues. 5724 */ 5725 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); 5726 5727 /** 5728 * ieee80211_request_smps - request SM PS transition 5729 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5730 * @smps_mode: new SM PS mode 5731 * 5732 * This allows the driver to request an SM PS transition in managed 5733 * mode. This is useful when the driver has more information than 5734 * the stack about possible interference, for example by bluetooth. 5735 */ 5736 void ieee80211_request_smps(struct ieee80211_vif *vif, 5737 enum ieee80211_smps_mode smps_mode); 5738 5739 /** 5740 * ieee80211_ready_on_channel - notification of remain-on-channel start 5741 * @hw: pointer as obtained from ieee80211_alloc_hw() 5742 */ 5743 void ieee80211_ready_on_channel(struct ieee80211_hw *hw); 5744 5745 /** 5746 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired 5747 * @hw: pointer as obtained from ieee80211_alloc_hw() 5748 */ 5749 void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); 5750 5751 /** 5752 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions 5753 * 5754 * in order not to harm the system performance and user experience, the device 5755 * may request not to allow any rx ba session and tear down existing rx ba 5756 * sessions based on system constraints such as periodic BT activity that needs 5757 * to limit wlan activity (eg.sco or a2dp)." 5758 * in such cases, the intention is to limit the duration of the rx ppdu and 5759 * therefore prevent the peer device to use a-mpdu aggregation. 5760 * 5761 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5762 * @ba_rx_bitmap: Bit map of open rx ba per tid 5763 * @addr: & to bssid mac address 5764 */ 5765 void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, 5766 const u8 *addr); 5767 5768 /** 5769 * ieee80211_mark_rx_ba_filtered_frames - move RX BA window and mark filtered 5770 * @pubsta: station struct 5771 * @tid: the session's TID 5772 * @ssn: starting sequence number of the bitmap, all frames before this are 5773 * assumed to be out of the window after the call 5774 * @filtered: bitmap of filtered frames, BIT(0) is the @ssn entry etc. 5775 * @received_mpdus: number of received mpdus in firmware 5776 * 5777 * This function moves the BA window and releases all frames before @ssn, and 5778 * marks frames marked in the bitmap as having been filtered. Afterwards, it 5779 * checks if any frames in the window starting from @ssn can now be released 5780 * (in case they were only waiting for frames that were filtered.) 5781 */ 5782 void ieee80211_mark_rx_ba_filtered_frames(struct ieee80211_sta *pubsta, u8 tid, 5783 u16 ssn, u64 filtered, 5784 u16 received_mpdus); 5785 5786 /** 5787 * ieee80211_send_bar - send a BlockAckReq frame 5788 * 5789 * can be used to flush pending frames from the peer's aggregation reorder 5790 * buffer. 5791 * 5792 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 5793 * @ra: the peer's destination address 5794 * @tid: the TID of the aggregation session 5795 * @ssn: the new starting sequence number for the receiver 5796 */ 5797 void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn); 5798 5799 /** 5800 * ieee80211_manage_rx_ba_offl - helper to queue an RX BA work 5801 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5802 * @addr: station mac address 5803 * @tid: the rx tid 5804 */ 5805 void ieee80211_manage_rx_ba_offl(struct ieee80211_vif *vif, const u8 *addr, 5806 unsigned int tid); 5807 5808 /** 5809 * ieee80211_start_rx_ba_session_offl - start a Rx BA session 5810 * 5811 * Some device drivers may offload part of the Rx aggregation flow including 5812 * AddBa/DelBa negotiation but may otherwise be incapable of full Rx 5813 * reordering. 5814 * 5815 * Create structures responsible for reordering so device drivers may call here 5816 * when they complete AddBa negotiation. 5817 * 5818 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5819 * @addr: station mac address 5820 * @tid: the rx tid 5821 */ 5822 static inline void ieee80211_start_rx_ba_session_offl(struct ieee80211_vif *vif, 5823 const u8 *addr, u16 tid) 5824 { 5825 if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) 5826 return; 5827 ieee80211_manage_rx_ba_offl(vif, addr, tid); 5828 } 5829 5830 /** 5831 * ieee80211_stop_rx_ba_session_offl - stop a Rx BA session 5832 * 5833 * Some device drivers may offload part of the Rx aggregation flow including 5834 * AddBa/DelBa negotiation but may otherwise be incapable of full Rx 5835 * reordering. 5836 * 5837 * Destroy structures responsible for reordering so device drivers may call here 5838 * when they complete DelBa negotiation. 5839 * 5840 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5841 * @addr: station mac address 5842 * @tid: the rx tid 5843 */ 5844 static inline void ieee80211_stop_rx_ba_session_offl(struct ieee80211_vif *vif, 5845 const u8 *addr, u16 tid) 5846 { 5847 if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) 5848 return; 5849 ieee80211_manage_rx_ba_offl(vif, addr, tid + IEEE80211_NUM_TIDS); 5850 } 5851 5852 /** 5853 * ieee80211_rx_ba_timer_expired - stop a Rx BA session due to timeout 5854 * 5855 * Some device drivers do not offload AddBa/DelBa negotiation, but handle rx 5856 * buffer reording internally, and therefore also handle the session timer. 5857 * 5858 * Trigger the timeout flow, which sends a DelBa. 5859 * 5860 * @vif: &struct ieee80211_vif pointer from the add_interface callback 5861 * @addr: station mac address 5862 * @tid: the rx tid 5863 */ 5864 void ieee80211_rx_ba_timer_expired(struct ieee80211_vif *vif, 5865 const u8 *addr, unsigned int tid); 5866 5867 /* Rate control API */ 5868 5869 /** 5870 * struct ieee80211_tx_rate_control - rate control information for/from RC algo 5871 * 5872 * @hw: The hardware the algorithm is invoked for. 5873 * @sband: The band this frame is being transmitted on. 5874 * @bss_conf: the current BSS configuration 5875 * @skb: the skb that will be transmitted, the control information in it needs 5876 * to be filled in 5877 * @reported_rate: The rate control algorithm can fill this in to indicate 5878 * which rate should be reported to userspace as the current rate and 5879 * used for rate calculations in the mesh network. 5880 * @rts: whether RTS will be used for this frame because it is longer than the 5881 * RTS threshold 5882 * @short_preamble: whether mac80211 will request short-preamble transmission 5883 * if the selected rate supports it 5884 * @rate_idx_mask: user-requested (legacy) rate mask 5885 * @rate_idx_mcs_mask: user-requested MCS rate mask (NULL if not in use) 5886 * @bss: whether this frame is sent out in AP or IBSS mode 5887 */ 5888 struct ieee80211_tx_rate_control { 5889 struct ieee80211_hw *hw; 5890 struct ieee80211_supported_band *sband; 5891 struct ieee80211_bss_conf *bss_conf; 5892 struct sk_buff *skb; 5893 struct ieee80211_tx_rate reported_rate; 5894 bool rts, short_preamble; 5895 u32 rate_idx_mask; 5896 u8 *rate_idx_mcs_mask; 5897 bool bss; 5898 }; 5899 5900 /** 5901 * enum rate_control_capabilities - rate control capabilities 5902 */ 5903 enum rate_control_capabilities { 5904 /** 5905 * @RATE_CTRL_CAPA_VHT_EXT_NSS_BW: 5906 * Support for extended NSS BW support (dot11VHTExtendedNSSCapable) 5907 * Note that this is only looked at if the minimum number of chains 5908 * that the AP uses is < the number of TX chains the hardware has, 5909 * otherwise the NSS difference doesn't bother us. 5910 */ 5911 RATE_CTRL_CAPA_VHT_EXT_NSS_BW = BIT(0), 5912 }; 5913 5914 struct rate_control_ops { 5915 unsigned long capa; 5916 const char *name; 5917 void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); 5918 void (*free)(void *priv); 5919 5920 void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); 5921 void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, 5922 struct cfg80211_chan_def *chandef, 5923 struct ieee80211_sta *sta, void *priv_sta); 5924 void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, 5925 struct cfg80211_chan_def *chandef, 5926 struct ieee80211_sta *sta, void *priv_sta, 5927 u32 changed); 5928 void (*free_sta)(void *priv, struct ieee80211_sta *sta, 5929 void *priv_sta); 5930 5931 void (*tx_status_ext)(void *priv, 5932 struct ieee80211_supported_band *sband, 5933 void *priv_sta, struct ieee80211_tx_status *st); 5934 void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, 5935 struct ieee80211_sta *sta, void *priv_sta, 5936 struct sk_buff *skb); 5937 void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, 5938 struct ieee80211_tx_rate_control *txrc); 5939 5940 void (*add_sta_debugfs)(void *priv, void *priv_sta, 5941 struct dentry *dir); 5942 void (*remove_sta_debugfs)(void *priv, void *priv_sta); 5943 5944 u32 (*get_expected_throughput)(void *priv_sta); 5945 }; 5946 5947 static inline int rate_supported(struct ieee80211_sta *sta, 5948 enum nl80211_band band, 5949 int index) 5950 { 5951 return (sta == NULL || sta->supp_rates[band] & BIT(index)); 5952 } 5953 5954 /** 5955 * rate_control_send_low - helper for drivers for management/no-ack frames 5956 * 5957 * Rate control algorithms that agree to use the lowest rate to 5958 * send management frames and NO_ACK data with the respective hw 5959 * retries should use this in the beginning of their mac80211 get_rate 5960 * callback. If true is returned the rate control can simply return. 5961 * If false is returned we guarantee that sta and sta and priv_sta is 5962 * not null. 5963 * 5964 * Rate control algorithms wishing to do more intelligent selection of 5965 * rate for multicast/broadcast frames may choose to not use this. 5966 * 5967 * @sta: &struct ieee80211_sta pointer to the target destination. Note 5968 * that this may be null. 5969 * @priv_sta: private rate control structure. This may be null. 5970 * @txrc: rate control information we sholud populate for mac80211. 5971 */ 5972 bool rate_control_send_low(struct ieee80211_sta *sta, 5973 void *priv_sta, 5974 struct ieee80211_tx_rate_control *txrc); 5975 5976 5977 static inline s8 5978 rate_lowest_index(struct ieee80211_supported_band *sband, 5979 struct ieee80211_sta *sta) 5980 { 5981 int i; 5982 5983 for (i = 0; i < sband->n_bitrates; i++) 5984 if (rate_supported(sta, sband->band, i)) 5985 return i; 5986 5987 /* warn when we cannot find a rate. */ 5988 WARN_ON_ONCE(1); 5989 5990 /* and return 0 (the lowest index) */ 5991 return 0; 5992 } 5993 5994 static inline 5995 bool rate_usable_index_exists(struct ieee80211_supported_band *sband, 5996 struct ieee80211_sta *sta) 5997 { 5998 unsigned int i; 5999 6000 for (i = 0; i < sband->n_bitrates; i++) 6001 if (rate_supported(sta, sband->band, i)) 6002 return true; 6003 return false; 6004 } 6005 6006 /** 6007 * rate_control_set_rates - pass the sta rate selection to mac80211/driver 6008 * 6009 * When not doing a rate control probe to test rates, rate control should pass 6010 * its rate selection to mac80211. If the driver supports receiving a station 6011 * rate table, it will use it to ensure that frames are always sent based on 6012 * the most recent rate control module decision. 6013 * 6014 * @hw: pointer as obtained from ieee80211_alloc_hw() 6015 * @pubsta: &struct ieee80211_sta pointer to the target destination. 6016 * @rates: new tx rate set to be used for this station. 6017 */ 6018 int rate_control_set_rates(struct ieee80211_hw *hw, 6019 struct ieee80211_sta *pubsta, 6020 struct ieee80211_sta_rates *rates); 6021 6022 int ieee80211_rate_control_register(const struct rate_control_ops *ops); 6023 void ieee80211_rate_control_unregister(const struct rate_control_ops *ops); 6024 6025 static inline bool 6026 conf_is_ht20(struct ieee80211_conf *conf) 6027 { 6028 return conf->chandef.width == NL80211_CHAN_WIDTH_20; 6029 } 6030 6031 static inline bool 6032 conf_is_ht40_minus(struct ieee80211_conf *conf) 6033 { 6034 return conf->chandef.width == NL80211_CHAN_WIDTH_40 && 6035 conf->chandef.center_freq1 < conf->chandef.chan->center_freq; 6036 } 6037 6038 static inline bool 6039 conf_is_ht40_plus(struct ieee80211_conf *conf) 6040 { 6041 return conf->chandef.width == NL80211_CHAN_WIDTH_40 && 6042 conf->chandef.center_freq1 > conf->chandef.chan->center_freq; 6043 } 6044 6045 static inline bool 6046 conf_is_ht40(struct ieee80211_conf *conf) 6047 { 6048 return conf->chandef.width == NL80211_CHAN_WIDTH_40; 6049 } 6050 6051 static inline bool 6052 conf_is_ht(struct ieee80211_conf *conf) 6053 { 6054 return (conf->chandef.width != NL80211_CHAN_WIDTH_5) && 6055 (conf->chandef.width != NL80211_CHAN_WIDTH_10) && 6056 (conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT); 6057 } 6058 6059 static inline enum nl80211_iftype 6060 ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) 6061 { 6062 if (p2p) { 6063 switch (type) { 6064 case NL80211_IFTYPE_STATION: 6065 return NL80211_IFTYPE_P2P_CLIENT; 6066 case NL80211_IFTYPE_AP: 6067 return NL80211_IFTYPE_P2P_GO; 6068 default: 6069 break; 6070 } 6071 } 6072 return type; 6073 } 6074 6075 static inline enum nl80211_iftype 6076 ieee80211_vif_type_p2p(struct ieee80211_vif *vif) 6077 { 6078 return ieee80211_iftype_p2p(vif->type, vif->p2p); 6079 } 6080 6081 /** 6082 * ieee80211_update_mu_groups - set the VHT MU-MIMO groud data 6083 * 6084 * @vif: the specified virtual interface 6085 * @membership: 64 bits array - a bit is set if station is member of the group 6086 * @position: 2 bits per group id indicating the position in the group 6087 * 6088 * Note: This function assumes that the given vif is valid and the position and 6089 * membership data is of the correct size and are in the same byte order as the 6090 * matching GroupId management frame. 6091 * Calls to this function need to be serialized with RX path. 6092 */ 6093 void ieee80211_update_mu_groups(struct ieee80211_vif *vif, 6094 const u8 *membership, const u8 *position); 6095 6096 void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 6097 int rssi_min_thold, 6098 int rssi_max_thold); 6099 6100 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif); 6101 6102 /** 6103 * ieee80211_ave_rssi - report the average RSSI for the specified interface 6104 * 6105 * @vif: the specified virtual interface 6106 * 6107 * Note: This function assumes that the given vif is valid. 6108 * 6109 * Return: The average RSSI value for the requested interface, or 0 if not 6110 * applicable. 6111 */ 6112 int ieee80211_ave_rssi(struct ieee80211_vif *vif); 6113 6114 /** 6115 * ieee80211_report_wowlan_wakeup - report WoWLAN wakeup 6116 * @vif: virtual interface 6117 * @wakeup: wakeup reason(s) 6118 * @gfp: allocation flags 6119 * 6120 * See cfg80211_report_wowlan_wakeup(). 6121 */ 6122 void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, 6123 struct cfg80211_wowlan_wakeup *wakeup, 6124 gfp_t gfp); 6125 6126 /** 6127 * ieee80211_tx_prepare_skb - prepare an 802.11 skb for transmission 6128 * @hw: pointer as obtained from ieee80211_alloc_hw() 6129 * @vif: virtual interface 6130 * @skb: frame to be sent from within the driver 6131 * @band: the band to transmit on 6132 * @sta: optional pointer to get the station to send the frame to 6133 * 6134 * Note: must be called under RCU lock 6135 */ 6136 bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw, 6137 struct ieee80211_vif *vif, struct sk_buff *skb, 6138 int band, struct ieee80211_sta **sta); 6139 6140 /** 6141 * struct ieee80211_noa_data - holds temporary data for tracking P2P NoA state 6142 * 6143 * @next_tsf: TSF timestamp of the next absent state change 6144 * @has_next_tsf: next absent state change event pending 6145 * 6146 * @absent: descriptor bitmask, set if GO is currently absent 6147 * 6148 * private: 6149 * 6150 * @count: count fields from the NoA descriptors 6151 * @desc: adjusted data from the NoA 6152 */ 6153 struct ieee80211_noa_data { 6154 u32 next_tsf; 6155 bool has_next_tsf; 6156 6157 u8 absent; 6158 6159 u8 count[IEEE80211_P2P_NOA_DESC_MAX]; 6160 struct { 6161 u32 start; 6162 u32 duration; 6163 u32 interval; 6164 } desc[IEEE80211_P2P_NOA_DESC_MAX]; 6165 }; 6166 6167 /** 6168 * ieee80211_parse_p2p_noa - initialize NoA tracking data from P2P IE 6169 * 6170 * @attr: P2P NoA IE 6171 * @data: NoA tracking data 6172 * @tsf: current TSF timestamp 6173 * 6174 * Return: number of successfully parsed descriptors 6175 */ 6176 int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, 6177 struct ieee80211_noa_data *data, u32 tsf); 6178 6179 /** 6180 * ieee80211_update_p2p_noa - get next pending P2P GO absent state change 6181 * 6182 * @data: NoA tracking data 6183 * @tsf: current TSF timestamp 6184 */ 6185 void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf); 6186 6187 /** 6188 * ieee80211_tdls_oper - request userspace to perform a TDLS operation 6189 * @vif: virtual interface 6190 * @peer: the peer's destination address 6191 * @oper: the requested TDLS operation 6192 * @reason_code: reason code for the operation, valid for TDLS teardown 6193 * @gfp: allocation flags 6194 * 6195 * See cfg80211_tdls_oper_request(). 6196 */ 6197 void ieee80211_tdls_oper_request(struct ieee80211_vif *vif, const u8 *peer, 6198 enum nl80211_tdls_operation oper, 6199 u16 reason_code, gfp_t gfp); 6200 6201 /** 6202 * ieee80211_reserve_tid - request to reserve a specific TID 6203 * 6204 * There is sometimes a need (such as in TDLS) for blocking the driver from 6205 * using a specific TID so that the FW can use it for certain operations such 6206 * as sending PTI requests. To make sure that the driver doesn't use that TID, 6207 * this function must be called as it flushes out packets on this TID and marks 6208 * it as blocked, so that any transmit for the station on this TID will be 6209 * redirected to the alternative TID in the same AC. 6210 * 6211 * Note that this function blocks and may call back into the driver, so it 6212 * should be called without driver locks held. Also note this function should 6213 * only be called from the driver's @sta_state callback. 6214 * 6215 * @sta: the station to reserve the TID for 6216 * @tid: the TID to reserve 6217 * 6218 * Returns: 0 on success, else on failure 6219 */ 6220 int ieee80211_reserve_tid(struct ieee80211_sta *sta, u8 tid); 6221 6222 /** 6223 * ieee80211_unreserve_tid - request to unreserve a specific TID 6224 * 6225 * Once there is no longer any need for reserving a certain TID, this function 6226 * should be called, and no longer will packets have their TID modified for 6227 * preventing use of this TID in the driver. 6228 * 6229 * Note that this function blocks and acquires a lock, so it should be called 6230 * without driver locks held. Also note this function should only be called 6231 * from the driver's @sta_state callback. 6232 * 6233 * @sta: the station 6234 * @tid: the TID to unreserve 6235 */ 6236 void ieee80211_unreserve_tid(struct ieee80211_sta *sta, u8 tid); 6237 6238 /** 6239 * ieee80211_tx_dequeue - dequeue a packet from a software tx queue 6240 * 6241 * @hw: pointer as obtained from ieee80211_alloc_hw() 6242 * @txq: pointer obtained from station or virtual interface, or from 6243 * ieee80211_next_txq() 6244 * 6245 * Returns the skb if successful, %NULL if no frame was available. 6246 * 6247 * Note that this must be called in an rcu_read_lock() critical section, 6248 * which can only be released after the SKB was handled. Some pointers in 6249 * skb->cb, e.g. the key pointer, are protected by by RCU and thus the 6250 * critical section must persist not just for the duration of this call 6251 * but for the duration of the frame handling. 6252 * However, also note that while in the wake_tx_queue() method, 6253 * rcu_read_lock() is already held. 6254 */ 6255 struct sk_buff *ieee80211_tx_dequeue(struct ieee80211_hw *hw, 6256 struct ieee80211_txq *txq); 6257 6258 /** 6259 * ieee80211_next_txq - get next tx queue to pull packets from 6260 * 6261 * @hw: pointer as obtained from ieee80211_alloc_hw() 6262 * @ac: AC number to return packets from. 6263 * 6264 * Returns the next txq if successful, %NULL if no queue is eligible. If a txq 6265 * is returned, it should be returned with ieee80211_return_txq() after the 6266 * driver has finished scheduling it. 6267 */ 6268 struct ieee80211_txq *ieee80211_next_txq(struct ieee80211_hw *hw, u8 ac); 6269 6270 /** 6271 * ieee80211_txq_schedule_start - start new scheduling round for TXQs 6272 * 6273 * @hw: pointer as obtained from ieee80211_alloc_hw() 6274 * @ac: AC number to acquire locks for 6275 * 6276 * Should be called before ieee80211_next_txq() or ieee80211_return_txq(). 6277 * The driver must not call multiple TXQ scheduling rounds concurrently. 6278 */ 6279 void ieee80211_txq_schedule_start(struct ieee80211_hw *hw, u8 ac); 6280 6281 /* (deprecated) */ 6282 static inline void ieee80211_txq_schedule_end(struct ieee80211_hw *hw, u8 ac) 6283 { 6284 } 6285 6286 void __ieee80211_schedule_txq(struct ieee80211_hw *hw, 6287 struct ieee80211_txq *txq, bool force); 6288 6289 /** 6290 * ieee80211_schedule_txq - schedule a TXQ for transmission 6291 * 6292 * @hw: pointer as obtained from ieee80211_alloc_hw() 6293 * @txq: pointer obtained from station or virtual interface 6294 * 6295 * Schedules a TXQ for transmission if it is not already scheduled, 6296 * even if mac80211 does not have any packets buffered. 6297 * 6298 * The driver may call this function if it has buffered packets for 6299 * this TXQ internally. 6300 */ 6301 static inline void 6302 ieee80211_schedule_txq(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 6303 { 6304 __ieee80211_schedule_txq(hw, txq, true); 6305 } 6306 6307 /** 6308 * ieee80211_return_txq - return a TXQ previously acquired by ieee80211_next_txq() 6309 * 6310 * @hw: pointer as obtained from ieee80211_alloc_hw() 6311 * @txq: pointer obtained from station or virtual interface 6312 * @force: schedule txq even if mac80211 does not have any buffered packets. 6313 * 6314 * The driver may set force=true if it has buffered packets for this TXQ 6315 * internally. 6316 */ 6317 static inline void 6318 ieee80211_return_txq(struct ieee80211_hw *hw, struct ieee80211_txq *txq, 6319 bool force) 6320 { 6321 __ieee80211_schedule_txq(hw, txq, force); 6322 } 6323 6324 /** 6325 * ieee80211_txq_may_transmit - check whether TXQ is allowed to transmit 6326 * 6327 * This function is used to check whether given txq is allowed to transmit by 6328 * the airtime scheduler, and can be used by drivers to access the airtime 6329 * fairness accounting without going using the scheduling order enfored by 6330 * next_txq(). 6331 * 6332 * Returns %true if the airtime scheduler thinks the TXQ should be allowed to 6333 * transmit, and %false if it should be throttled. This function can also have 6334 * the side effect of rotating the TXQ in the scheduler rotation, which will 6335 * eventually bring the deficit to positive and allow the station to transmit 6336 * again. 6337 * 6338 * The API ieee80211_txq_may_transmit() also ensures that TXQ list will be 6339 * aligned aginst driver's own round-robin scheduler list. i.e it rotates 6340 * the TXQ list till it makes the requested node becomes the first entry 6341 * in TXQ list. Thus both the TXQ list and driver's list are in sync. If this 6342 * function returns %true, the driver is expected to schedule packets 6343 * for transmission, and then return the TXQ through ieee80211_return_txq(). 6344 * 6345 * @hw: pointer as obtained from ieee80211_alloc_hw() 6346 * @txq: pointer obtained from station or virtual interface 6347 */ 6348 bool ieee80211_txq_may_transmit(struct ieee80211_hw *hw, 6349 struct ieee80211_txq *txq); 6350 6351 /** 6352 * ieee80211_txq_get_depth - get pending frame/byte count of given txq 6353 * 6354 * The values are not guaranteed to be coherent with regard to each other, i.e. 6355 * txq state can change half-way of this function and the caller may end up 6356 * with "new" frame_cnt and "old" byte_cnt or vice-versa. 6357 * 6358 * @txq: pointer obtained from station or virtual interface 6359 * @frame_cnt: pointer to store frame count 6360 * @byte_cnt: pointer to store byte count 6361 */ 6362 void ieee80211_txq_get_depth(struct ieee80211_txq *txq, 6363 unsigned long *frame_cnt, 6364 unsigned long *byte_cnt); 6365 6366 /** 6367 * ieee80211_nan_func_terminated - notify about NAN function termination. 6368 * 6369 * This function is used to notify mac80211 about NAN function termination. 6370 * Note that this function can't be called from hard irq. 6371 * 6372 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 6373 * @inst_id: the local instance id 6374 * @reason: termination reason (one of the NL80211_NAN_FUNC_TERM_REASON_*) 6375 * @gfp: allocation flags 6376 */ 6377 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, 6378 u8 inst_id, 6379 enum nl80211_nan_func_term_reason reason, 6380 gfp_t gfp); 6381 6382 /** 6383 * ieee80211_nan_func_match - notify about NAN function match event. 6384 * 6385 * This function is used to notify mac80211 about NAN function match. The 6386 * cookie inside the match struct will be assigned by mac80211. 6387 * Note that this function can't be called from hard irq. 6388 * 6389 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 6390 * @match: match event information 6391 * @gfp: allocation flags 6392 */ 6393 void ieee80211_nan_func_match(struct ieee80211_vif *vif, 6394 struct cfg80211_nan_match_params *match, 6395 gfp_t gfp); 6396 6397 #endif /* MAC80211_H */ 6398