mac80211.h revision f1e3e0515646dd0f4c783c1c39839d2706501344
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 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13#ifndef MAC80211_H 14#define MAC80211_H 15 16#include <linux/bug.h> 17#include <linux/kernel.h> 18#include <linux/if_ether.h> 19#include <linux/skbuff.h> 20#include <linux/ieee80211.h> 21#include <net/cfg80211.h> 22#include <asm/unaligned.h> 23 24/** 25 * DOC: Introduction 26 * 27 * mac80211 is the Linux stack for 802.11 hardware that implements 28 * only partial functionality in hard- or firmware. This document 29 * defines the interface between mac80211 and low-level hardware 30 * drivers. 31 */ 32 33/** 34 * DOC: Calling mac80211 from interrupts 35 * 36 * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be 37 * called in hardware interrupt context. The low-level driver must not call any 38 * other functions in hardware interrupt context. If there is a need for such 39 * call, the low-level driver should first ACK the interrupt and perform the 40 * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even 41 * tasklet function. 42 * 43 * NOTE: If the driver opts to use the _irqsafe() functions, it may not also 44 * use the non-IRQ-safe functions! 45 */ 46 47/** 48 * DOC: Warning 49 * 50 * If you're reading this document and not the header file itself, it will 51 * be incomplete because not all documentation has been converted yet. 52 */ 53 54/** 55 * DOC: Frame format 56 * 57 * As a general rule, when frames are passed between mac80211 and the driver, 58 * they start with the IEEE 802.11 header and include the same octets that are 59 * sent over the air except for the FCS which should be calculated by the 60 * hardware. 61 * 62 * There are, however, various exceptions to this rule for advanced features: 63 * 64 * The first exception is for hardware encryption and decryption offload 65 * where the IV/ICV may or may not be generated in hardware. 66 * 67 * Secondly, when the hardware handles fragmentation, the frame handed to 68 * the driver from mac80211 is the MSDU, not the MPDU. 69 * 70 * Finally, for received frames, the driver is able to indicate that it has 71 * filled a radiotap header and put that in front of the frame; if it does 72 * not do so then mac80211 may add this under certain circumstances. 73 */ 74 75/** 76 * DOC: mac80211 workqueue 77 * 78 * mac80211 provides its own workqueue for drivers and internal mac80211 use. 79 * The workqueue is a single threaded workqueue and can only be accessed by 80 * helpers for sanity checking. Drivers must ensure all work added onto the 81 * mac80211 workqueue should be cancelled on the driver stop() callback. 82 * 83 * mac80211 will flushed the workqueue upon interface removal and during 84 * suspend. 85 * 86 * All work performed on the mac80211 workqueue must not acquire the RTNL lock. 87 * 88 */ 89 90struct device; 91 92/** 93 * enum ieee80211_max_queues - maximum number of queues 94 * 95 * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. 96 */ 97enum ieee80211_max_queues { 98 IEEE80211_MAX_QUEUES = 16, 99}; 100 101#define IEEE80211_INVAL_HW_QUEUE 0xff 102 103/** 104 * enum ieee80211_ac_numbers - AC numbers as used in mac80211 105 * @IEEE80211_AC_VO: voice 106 * @IEEE80211_AC_VI: video 107 * @IEEE80211_AC_BE: best effort 108 * @IEEE80211_AC_BK: background 109 */ 110enum ieee80211_ac_numbers { 111 IEEE80211_AC_VO = 0, 112 IEEE80211_AC_VI = 1, 113 IEEE80211_AC_BE = 2, 114 IEEE80211_AC_BK = 3, 115}; 116#define IEEE80211_NUM_ACS 4 117 118/** 119 * struct ieee80211_tx_queue_params - transmit queue configuration 120 * 121 * The information provided in this structure is required for QoS 122 * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. 123 * 124 * @aifs: arbitration interframe space [0..255] 125 * @cw_min: minimum contention window [a value of the form 126 * 2^n-1 in the range 1..32767] 127 * @cw_max: maximum contention window [like @cw_min] 128 * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled 129 * @uapsd: is U-APSD mode enabled for the queue 130 */ 131struct ieee80211_tx_queue_params { 132 u16 txop; 133 u16 cw_min; 134 u16 cw_max; 135 u8 aifs; 136 bool uapsd; 137}; 138 139struct ieee80211_low_level_stats { 140 unsigned int dot11ACKFailureCount; 141 unsigned int dot11RTSFailureCount; 142 unsigned int dot11FCSErrorCount; 143 unsigned int dot11RTSSuccessCount; 144}; 145 146/** 147 * enum ieee80211_chanctx_change - change flag for channel context 148 * @IEEE80211_CHANCTX_CHANGE_WIDTH: The channel width changed 149 * @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed 150 */ 151enum ieee80211_chanctx_change { 152 IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(0), 153 IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(1), 154}; 155 156/** 157 * struct ieee80211_chanctx_conf - channel context that vifs may be tuned to 158 * 159 * This is the driver-visible part. The ieee80211_chanctx 160 * that contains it is visible in mac80211 only. 161 * 162 * @def: the channel definition 163 * @rx_chains_static: The number of RX chains that must always be 164 * active on the channel to receive MIMO transmissions 165 * @rx_chains_dynamic: The number of RX chains that must be enabled 166 * after RTS/CTS handshake to receive SMPS MIMO transmissions; 167 * this will always be >= @rx_chains_static. 168 * @drv_priv: data area for driver use, will always be aligned to 169 * sizeof(void *), size is determined in hw information. 170 */ 171struct ieee80211_chanctx_conf { 172 struct cfg80211_chan_def def; 173 174 u8 rx_chains_static, rx_chains_dynamic; 175 176 u8 drv_priv[0] __aligned(sizeof(void *)); 177}; 178 179/** 180 * enum ieee80211_bss_change - BSS change notification flags 181 * 182 * These flags are used with the bss_info_changed() callback 183 * to indicate which BSS parameter changed. 184 * 185 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), 186 * also implies a change in the AID. 187 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed 188 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed 189 * @BSS_CHANGED_ERP_SLOT: slot timing changed 190 * @BSS_CHANGED_HT: 802.11n parameters changed 191 * @BSS_CHANGED_BASIC_RATES: Basic rateset changed 192 * @BSS_CHANGED_BEACON_INT: Beacon interval changed 193 * @BSS_CHANGED_BSSID: BSSID changed, for whatever 194 * reason (IBSS and managed mode) 195 * @BSS_CHANGED_BEACON: Beacon data changed, retrieve 196 * new beacon (beaconing modes) 197 * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be 198 * enabled/disabled (beaconing modes) 199 * @BSS_CHANGED_CQM: Connection quality monitor config changed 200 * @BSS_CHANGED_IBSS: IBSS join status changed 201 * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. 202 * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note 203 * that it is only ever disabled for station mode. 204 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface. 205 * @BSS_CHANGED_SSID: SSID changed for this BSS (AP mode) 206 * @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode) 207 * @BSS_CHANGED_PS: PS changed for this BSS (STA mode) 208 * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface 209 * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS) 210 * changed (currently only in P2P client mode, GO mode will be later) 211 * @BSS_CHANGED_DTIM_PERIOD: the DTIM period value was changed (set when 212 * it becomes valid, managed mode only) 213 */ 214enum ieee80211_bss_change { 215 BSS_CHANGED_ASSOC = 1<<0, 216 BSS_CHANGED_ERP_CTS_PROT = 1<<1, 217 BSS_CHANGED_ERP_PREAMBLE = 1<<2, 218 BSS_CHANGED_ERP_SLOT = 1<<3, 219 BSS_CHANGED_HT = 1<<4, 220 BSS_CHANGED_BASIC_RATES = 1<<5, 221 BSS_CHANGED_BEACON_INT = 1<<6, 222 BSS_CHANGED_BSSID = 1<<7, 223 BSS_CHANGED_BEACON = 1<<8, 224 BSS_CHANGED_BEACON_ENABLED = 1<<9, 225 BSS_CHANGED_CQM = 1<<10, 226 BSS_CHANGED_IBSS = 1<<11, 227 BSS_CHANGED_ARP_FILTER = 1<<12, 228 BSS_CHANGED_QOS = 1<<13, 229 BSS_CHANGED_IDLE = 1<<14, 230 BSS_CHANGED_SSID = 1<<15, 231 BSS_CHANGED_AP_PROBE_RESP = 1<<16, 232 BSS_CHANGED_PS = 1<<17, 233 BSS_CHANGED_TXPOWER = 1<<18, 234 BSS_CHANGED_P2P_PS = 1<<19, 235 BSS_CHANGED_DTIM_PERIOD = 1<<20, 236 237 /* when adding here, make sure to change ieee80211_reconfig */ 238}; 239 240/* 241 * The maximum number of IPv4 addresses listed for ARP filtering. If the number 242 * of addresses for an interface increase beyond this value, hardware ARP 243 * filtering will be disabled. 244 */ 245#define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 246 247/** 248 * enum ieee80211_rssi_event - RSSI threshold event 249 * An indicator for when RSSI goes below/above a certain threshold. 250 * @RSSI_EVENT_HIGH: AP's rssi crossed the high threshold set by the driver. 251 * @RSSI_EVENT_LOW: AP's rssi crossed the low threshold set by the driver. 252 */ 253enum ieee80211_rssi_event { 254 RSSI_EVENT_HIGH, 255 RSSI_EVENT_LOW, 256}; 257 258/** 259 * struct ieee80211_bss_conf - holds the BSS's changing parameters 260 * 261 * This structure keeps information about a BSS (and an association 262 * to that BSS) that can change during the lifetime of the BSS. 263 * 264 * @assoc: association status 265 * @ibss_joined: indicates whether this station is part of an IBSS 266 * or not 267 * @ibss_creator: indicates if a new IBSS network is being created 268 * @aid: association ID number, valid only when @assoc is true 269 * @use_cts_prot: use CTS protection 270 * @use_short_preamble: use 802.11b short preamble; 271 * if the hardware cannot handle this it must set the 272 * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag 273 * @use_short_slot: use short slot time (only relevant for ERP); 274 * if the hardware cannot handle this it must set the 275 * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag 276 * @dtim_period: num of beacons before the next DTIM, for beaconing, 277 * valid in station mode only if after the driver was notified 278 * with the %BSS_CHANGED_DTIM_PERIOD flag, will be non-zero then. 279 * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old 280 * as it may have been received during scanning long ago). If the 281 * HW flag %IEEE80211_HW_TIMING_BEACON_ONLY is set, then this can 282 * only come from a beacon, but might not become valid until after 283 * association when a beacon is received (which is notified with the 284 * %BSS_CHANGED_DTIM flag.) 285 * @sync_device_ts: the device timestamp corresponding to the sync_tsf, 286 * the driver/device can use this to calculate synchronisation 287 * (see @sync_tsf) 288 * @sync_dtim_count: Only valid when %IEEE80211_HW_TIMING_BEACON_ONLY 289 * is requested, see @sync_tsf/@sync_device_ts. 290 * @beacon_int: beacon interval 291 * @assoc_capability: capabilities taken from assoc resp 292 * @basic_rates: bitmap of basic rates, each bit stands for an 293 * index into the rate table configured by the driver in 294 * the current band. 295 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 296 * @bssid: The BSSID for this BSS 297 * @enable_beacon: whether beaconing should be enabled or not 298 * @chandef: Channel definition for this BSS -- the hardware might be 299 * configured a higher bandwidth than this BSS uses, for example. 300 * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation. 301 * This field is only valid when the channel type is one of the HT types. 302 * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value 303 * implies disabled 304 * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis 305 * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The 306 * may filter ARP queries targeted for other addresses than listed here. 307 * The driver must allow ARP queries targeted for all address listed here 308 * to pass through. An empty list implies no ARP queries need to pass. 309 * @arp_addr_cnt: Number of addresses currently on the list. Note that this 310 * may be larger than %IEEE80211_BSS_ARP_ADDR_LIST_LEN (the arp_addr_list 311 * array size), it's up to the driver what to do in that case. 312 * @qos: This is a QoS-enabled BSS. 313 * @idle: This interface is idle. There's also a global idle flag in the 314 * hardware config which may be more appropriate depending on what 315 * your driver/device needs to do. 316 * @ps: power-save mode (STA only). This flag is NOT affected by 317 * offchannel/dynamic_ps operations. 318 * @ssid: The SSID of the current vif. Only valid in AP-mode. 319 * @ssid_len: Length of SSID given in @ssid. 320 * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode. 321 * @txpower: TX power in dBm 322 * @p2p_ctwindow: P2P CTWindow, only for P2P client interfaces 323 * @p2p_oppps: P2P opportunistic PS is enabled 324 */ 325struct ieee80211_bss_conf { 326 const u8 *bssid; 327 /* association related data */ 328 bool assoc, ibss_joined; 329 bool ibss_creator; 330 u16 aid; 331 /* erp related data */ 332 bool use_cts_prot; 333 bool use_short_preamble; 334 bool use_short_slot; 335 bool enable_beacon; 336 u8 dtim_period; 337 u16 beacon_int; 338 u16 assoc_capability; 339 u64 sync_tsf; 340 u32 sync_device_ts; 341 u8 sync_dtim_count; 342 u32 basic_rates; 343 int mcast_rate[IEEE80211_NUM_BANDS]; 344 u16 ht_operation_mode; 345 s32 cqm_rssi_thold; 346 u32 cqm_rssi_hyst; 347 struct cfg80211_chan_def chandef; 348 __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; 349 int arp_addr_cnt; 350 bool qos; 351 bool idle; 352 bool ps; 353 u8 ssid[IEEE80211_MAX_SSID_LEN]; 354 size_t ssid_len; 355 bool hidden_ssid; 356 int txpower; 357 u8 p2p_ctwindow; 358 bool p2p_oppps; 359}; 360 361/** 362 * enum mac80211_tx_control_flags - flags to describe transmission information/status 363 * 364 * These flags are used with the @flags member of &ieee80211_tx_info. 365 * 366 * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. 367 * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence 368 * number to this frame, taking care of not overwriting the fragment 369 * number and increasing the sequence number only when the 370 * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly 371 * assign sequence numbers to QoS-data frames but cannot do so correctly 372 * for non-QoS-data and management frames because beacons need them from 373 * that counter as well and mac80211 cannot guarantee proper sequencing. 374 * If this flag is set, the driver should instruct the hardware to 375 * assign a sequence number to the frame or assign one itself. Cf. IEEE 376 * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for 377 * beacons and always be clear for frames without a sequence number field. 378 * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack 379 * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination 380 * station 381 * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame 382 * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon 383 * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU 384 * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. 385 * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted 386 * because the destination STA was in powersave mode. Note that to 387 * avoid race conditions, the filter must be set by the hardware or 388 * firmware upon receiving a frame that indicates that the station 389 * went to sleep (must be done on device to filter frames already on 390 * the queue) and may only be unset after mac80211 gives the OK for 391 * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), 392 * since only then is it guaranteed that no more frames are in the 393 * hardware queue. 394 * @IEEE80211_TX_STAT_ACK: Frame was acknowledged 395 * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status 396 * is for the whole aggregation. 397 * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, 398 * so consider using block ack request (BAR). 399 * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be 400 * set by rate control algorithms to indicate probe rate, will 401 * be cleared for fragmented frames (except on the last fragment) 402 * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, 403 * used to indicate that a pending frame requires TX processing before 404 * it can be sent out. 405 * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, 406 * used to indicate that a frame was already retried due to PS 407 * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, 408 * used to indicate frame should not be encrypted 409 * @IEEE80211_TX_CTL_NO_PS_BUFFER: This frame is a response to a poll 410 * frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must 411 * be sent although the station is in powersave mode. 412 * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the 413 * transmit function after the current frame, this can be used 414 * by drivers to kick the DMA queue only if unset or when the 415 * queue gets full. 416 * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted 417 * after TX status because the destination was asleep, it must not 418 * be modified again (no seqno assignment, crypto, etc.) 419 * @IEEE80211_TX_INTFL_MLME_CONN_TX: This frame was transmitted by the MLME 420 * code for connection establishment, this indicates that its status 421 * should kick the MLME state machine. 422 * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 423 * MLME command (internal to mac80211 to figure out whether to send TX 424 * status to user space) 425 * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame 426 * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this 427 * frame and selects the maximum number of streams that it can use. 428 * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on 429 * the off-channel channel when a remain-on-channel offload is done 430 * in hardware -- normal packets still flow and are expected to be 431 * handled properly by the device. 432 * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP 433 * testing. It will be sent out with incorrect Michael MIC key to allow 434 * TKIP countermeasures to be tested. 435 * @IEEE80211_TX_CTL_NO_CCK_RATE: This frame will be sent at non CCK rate. 436 * This flag is actually used for management frame especially for P2P 437 * frames not being sent at CCK rate in 2GHz band. 438 * @IEEE80211_TX_STATUS_EOSP: This packet marks the end of service period, 439 * when its status is reported the service period ends. For frames in 440 * an SP that mac80211 transmits, it is already set; for driver frames 441 * the driver may set this flag. It is also used to do the same for 442 * PS-Poll responses. 443 * @IEEE80211_TX_CTL_USE_MINRATE: This frame will be sent at lowest rate. 444 * This flag is used to send nullfunc frame at minimum rate when 445 * the nullfunc is used for connection monitoring purpose. 446 * @IEEE80211_TX_CTL_DONTFRAG: Don't fragment this packet even if it 447 * would be fragmented by size (this is optional, only used for 448 * monitor injection). 449 * 450 * Note: If you have to add new flags to the enumeration, then don't 451 * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary. 452 */ 453enum mac80211_tx_control_flags { 454 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), 455 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 456 IEEE80211_TX_CTL_NO_ACK = BIT(2), 457 IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), 458 IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), 459 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), 460 IEEE80211_TX_CTL_AMPDU = BIT(6), 461 IEEE80211_TX_CTL_INJECTED = BIT(7), 462 IEEE80211_TX_STAT_TX_FILTERED = BIT(8), 463 IEEE80211_TX_STAT_ACK = BIT(9), 464 IEEE80211_TX_STAT_AMPDU = BIT(10), 465 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), 466 IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), 467 IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), 468 IEEE80211_TX_INTFL_RETRIED = BIT(15), 469 IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), 470 IEEE80211_TX_CTL_NO_PS_BUFFER = BIT(17), 471 IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), 472 IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), 473 IEEE80211_TX_INTFL_MLME_CONN_TX = BIT(20), 474 IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), 475 IEEE80211_TX_CTL_LDPC = BIT(22), 476 IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), 477 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25), 478 IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26), 479 IEEE80211_TX_CTL_NO_CCK_RATE = BIT(27), 480 IEEE80211_TX_STATUS_EOSP = BIT(28), 481 IEEE80211_TX_CTL_USE_MINRATE = BIT(29), 482 IEEE80211_TX_CTL_DONTFRAG = BIT(30), 483}; 484 485#define IEEE80211_TX_CTL_STBC_SHIFT 23 486 487/* 488 * This definition is used as a mask to clear all temporary flags, which are 489 * set by the tx handlers for each transmission attempt by the mac80211 stack. 490 */ 491#define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \ 492 IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \ 493 IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \ 494 IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \ 495 IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \ 496 IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_NO_PS_BUFFER | \ 497 IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \ 498 IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP) 499 500/** 501 * enum mac80211_rate_control_flags - per-rate flags set by the 502 * Rate Control algorithm. 503 * 504 * These flags are set by the Rate control algorithm for each rate during tx, 505 * in the @flags member of struct ieee80211_tx_rate. 506 * 507 * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. 508 * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. 509 * This is set if the current BSS requires ERP protection. 510 * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. 511 * @IEEE80211_TX_RC_MCS: HT rate. 512 * @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split 513 * into a higher 4 bits (Nss) and lower 4 bits (MCS number) 514 * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in 515 * Greenfield mode. 516 * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. 517 * @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission 518 * @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission 519 * (80+80 isn't supported yet) 520 * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the 521 * adjacent 20 MHz channels, if the current channel type is 522 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. 523 * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. 524 */ 525enum mac80211_rate_control_flags { 526 IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), 527 IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), 528 IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), 529 530 /* rate index is an HT/VHT MCS instead of an index */ 531 IEEE80211_TX_RC_MCS = BIT(3), 532 IEEE80211_TX_RC_GREEN_FIELD = BIT(4), 533 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), 534 IEEE80211_TX_RC_DUP_DATA = BIT(6), 535 IEEE80211_TX_RC_SHORT_GI = BIT(7), 536 IEEE80211_TX_RC_VHT_MCS = BIT(8), 537 IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(9), 538 IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(10), 539}; 540 541 542/* there are 40 bytes if you don't need the rateset to be kept */ 543#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 544 545/* if you do need the rateset, then you have less space */ 546#define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 547 548/* maximum number of rate stages */ 549#define IEEE80211_TX_MAX_RATES 4 550 551/** 552 * struct ieee80211_tx_rate - rate selection/status 553 * 554 * @idx: rate index to attempt to send with 555 * @flags: rate control flags (&enum mac80211_rate_control_flags) 556 * @count: number of tries in this rate before going to the next rate 557 * 558 * A value of -1 for @idx indicates an invalid rate and, if used 559 * in an array of retry rates, that no more rates should be tried. 560 * 561 * When used for transmit status reporting, the driver should 562 * always report the rate along with the flags it used. 563 * 564 * &struct ieee80211_tx_info contains an array of these structs 565 * in the control information, and it will be filled by the rate 566 * control algorithm according to what should be sent. For example, 567 * if this array contains, in the format { <idx>, <count> } the 568 * information 569 * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } 570 * then this means that the frame should be transmitted 571 * up to twice at rate 3, up to twice at rate 2, and up to four 572 * times at rate 1 if it doesn't get acknowledged. Say it gets 573 * acknowledged by the peer after the fifth attempt, the status 574 * information should then contain 575 * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... 576 * since it was transmitted twice at rate 3, twice at rate 2 577 * and once at rate 1 after which we received an acknowledgement. 578 */ 579struct ieee80211_tx_rate { 580 s8 idx; 581 u16 count:5, 582 flags:11; 583} __packed; 584 585#define IEEE80211_MAX_TX_RETRY 31 586 587static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate, 588 u8 mcs, u8 nss) 589{ 590 WARN_ON(mcs & ~0xF); 591 WARN_ON(nss & ~0x7); 592 rate->idx = (nss << 4) | mcs; 593} 594 595static inline u8 596ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate) 597{ 598 return rate->idx & 0xF; 599} 600 601static inline u8 602ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate) 603{ 604 return rate->idx >> 4; 605} 606 607/** 608 * struct ieee80211_tx_info - skb transmit information 609 * 610 * This structure is placed in skb->cb for three uses: 611 * (1) mac80211 TX control - mac80211 tells the driver what to do 612 * (2) driver internal use (if applicable) 613 * (3) TX status information - driver tells mac80211 what happened 614 * 615 * @flags: transmit info flags, defined above 616 * @band: the band to transmit on (use for checking for races) 617 * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC 618 * @ack_frame_id: internal frame ID for TX status, used internally 619 * @control: union for control data 620 * @status: union for status data 621 * @driver_data: array of driver_data pointers 622 * @ampdu_ack_len: number of acked aggregated frames. 623 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 624 * @ampdu_len: number of aggregated frames. 625 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 626 * @ack_signal: signal strength of the ACK frame 627 */ 628struct ieee80211_tx_info { 629 /* common information */ 630 u32 flags; 631 u8 band; 632 633 u8 hw_queue; 634 635 u16 ack_frame_id; 636 637 union { 638 struct { 639 union { 640 /* rate control */ 641 struct { 642 struct ieee80211_tx_rate rates[ 643 IEEE80211_TX_MAX_RATES]; 644 s8 rts_cts_rate_idx; 645 /* 3 bytes free */ 646 }; 647 /* only needed before rate control */ 648 unsigned long jiffies; 649 }; 650 /* NB: vif can be NULL for injected frames */ 651 struct ieee80211_vif *vif; 652 struct ieee80211_key_conf *hw_key; 653 /* 8 bytes free */ 654 } control; 655 struct { 656 struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; 657 int ack_signal; 658 u8 ampdu_ack_len; 659 u8 ampdu_len; 660 u8 antenna; 661 /* 21 bytes free */ 662 } status; 663 struct { 664 struct ieee80211_tx_rate driver_rates[ 665 IEEE80211_TX_MAX_RATES]; 666 void *rate_driver_data[ 667 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; 668 }; 669 void *driver_data[ 670 IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; 671 }; 672}; 673 674/** 675 * struct ieee80211_sched_scan_ies - scheduled scan IEs 676 * 677 * This structure is used to pass the appropriate IEs to be used in scheduled 678 * scans for all bands. It contains both the IEs passed from the userspace 679 * and the ones generated by mac80211. 680 * 681 * @ie: array with the IEs for each supported band 682 * @len: array with the total length of the IEs for each band 683 */ 684struct ieee80211_sched_scan_ies { 685 u8 *ie[IEEE80211_NUM_BANDS]; 686 size_t len[IEEE80211_NUM_BANDS]; 687}; 688 689static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) 690{ 691 return (struct ieee80211_tx_info *)skb->cb; 692} 693 694static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) 695{ 696 return (struct ieee80211_rx_status *)skb->cb; 697} 698 699/** 700 * ieee80211_tx_info_clear_status - clear TX status 701 * 702 * @info: The &struct ieee80211_tx_info to be cleared. 703 * 704 * When the driver passes an skb back to mac80211, it must report 705 * a number of things in TX status. This function clears everything 706 * in the TX status but the rate control information (it does clear 707 * the count since you need to fill that in anyway). 708 * 709 * NOTE: You can only use this function if you do NOT use 710 * info->driver_data! Use info->rate_driver_data 711 * instead if you need only the less space that allows. 712 */ 713static inline void 714ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) 715{ 716 int i; 717 718 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 719 offsetof(struct ieee80211_tx_info, control.rates)); 720 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 721 offsetof(struct ieee80211_tx_info, driver_rates)); 722 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); 723 /* clear the rate counts */ 724 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) 725 info->status.rates[i].count = 0; 726 727 BUILD_BUG_ON( 728 offsetof(struct ieee80211_tx_info, status.ack_signal) != 20); 729 memset(&info->status.ampdu_ack_len, 0, 730 sizeof(struct ieee80211_tx_info) - 731 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); 732} 733 734 735/** 736 * enum mac80211_rx_flags - receive flags 737 * 738 * These flags are used with the @flag member of &struct ieee80211_rx_status. 739 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. 740 * Use together with %RX_FLAG_MMIC_STRIPPED. 741 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. 742 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, 743 * verification has been done by the hardware. 744 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. 745 * If this flag is set, the stack cannot do any replay detection 746 * hence the driver or hardware will have to do that. 747 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on 748 * the frame. 749 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on 750 * the frame. 751 * @RX_FLAG_MACTIME_START: The timestamp passed in the RX status (@mactime 752 * field) is valid and contains the time the first symbol of the MPDU 753 * was received. This is useful in monitor mode and for proper IBSS 754 * merging. 755 * @RX_FLAG_MACTIME_END: The timestamp passed in the RX status (@mactime 756 * field) is valid and contains the time the last symbol of the MPDU 757 * (including FCS) was received. 758 * @RX_FLAG_SHORTPRE: Short preamble was used for this frame 759 * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index 760 * @RX_FLAG_VHT: VHT MCS was used and rate_index is MCS index 761 * @RX_FLAG_40MHZ: HT40 (40 MHz) was used 762 * @RX_FLAG_80MHZ: 80 MHz was used 763 * @RX_FLAG_80P80MHZ: 80+80 MHz was used 764 * @RX_FLAG_160MHZ: 160 MHz was used 765 * @RX_FLAG_SHORT_GI: Short guard interval was used 766 * @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present. 767 * Valid only for data frames (mainly A-MPDU) 768 * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if 769 * the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT 770 * to hw.radiotap_mcs_details to advertise that fact 771 * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference 772 * number (@ampdu_reference) must be populated and be a distinct number for 773 * each A-MPDU 774 * @RX_FLAG_AMPDU_REPORT_ZEROLEN: driver reports 0-length subframes 775 * @RX_FLAG_AMPDU_IS_ZEROLEN: This is a zero-length subframe, for 776 * monitoring purposes only 777 * @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all 778 * subframes of a single A-MPDU 779 * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU 780 * @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected 781 * on this subframe 782 * @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC 783 * is stored in the @ampdu_delimiter_crc field) 784 */ 785enum mac80211_rx_flags { 786 RX_FLAG_MMIC_ERROR = BIT(0), 787 RX_FLAG_DECRYPTED = BIT(1), 788 RX_FLAG_MMIC_STRIPPED = BIT(3), 789 RX_FLAG_IV_STRIPPED = BIT(4), 790 RX_FLAG_FAILED_FCS_CRC = BIT(5), 791 RX_FLAG_FAILED_PLCP_CRC = BIT(6), 792 RX_FLAG_MACTIME_START = BIT(7), 793 RX_FLAG_SHORTPRE = BIT(8), 794 RX_FLAG_HT = BIT(9), 795 RX_FLAG_40MHZ = BIT(10), 796 RX_FLAG_SHORT_GI = BIT(11), 797 RX_FLAG_NO_SIGNAL_VAL = BIT(12), 798 RX_FLAG_HT_GF = BIT(13), 799 RX_FLAG_AMPDU_DETAILS = BIT(14), 800 RX_FLAG_AMPDU_REPORT_ZEROLEN = BIT(15), 801 RX_FLAG_AMPDU_IS_ZEROLEN = BIT(16), 802 RX_FLAG_AMPDU_LAST_KNOWN = BIT(17), 803 RX_FLAG_AMPDU_IS_LAST = BIT(18), 804 RX_FLAG_AMPDU_DELIM_CRC_ERROR = BIT(19), 805 RX_FLAG_AMPDU_DELIM_CRC_KNOWN = BIT(20), 806 RX_FLAG_MACTIME_END = BIT(21), 807 RX_FLAG_VHT = BIT(22), 808 RX_FLAG_80MHZ = BIT(23), 809 RX_FLAG_80P80MHZ = BIT(24), 810 RX_FLAG_160MHZ = BIT(25), 811}; 812 813/** 814 * struct ieee80211_rx_status - receive status 815 * 816 * The low-level driver should provide this information (the subset 817 * supported by hardware) to the 802.11 code with each received 818 * frame, in the skb's control buffer (cb). 819 * 820 * @mactime: value in microseconds of the 64-bit Time Synchronization Function 821 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. 822 * @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use 823 * it but can store it and pass it back to the driver for synchronisation 824 * @band: the active band when this frame was received 825 * @freq: frequency the radio was tuned to when receiving this frame, in MHz 826 * @signal: signal strength when receiving this frame, either in dBm, in dB or 827 * unspecified depending on the hardware capabilities flags 828 * @IEEE80211_HW_SIGNAL_* 829 * @antenna: antenna used 830 * @rate_idx: index of data rate into band's supported rates or MCS index if 831 * HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT) 832 * @vht_nss: number of streams (VHT only) 833 * @flag: %RX_FLAG_* 834 * @rx_flags: internal RX flags for mac80211 835 * @ampdu_reference: A-MPDU reference number, must be a different value for 836 * each A-MPDU but the same for each subframe within one A-MPDU 837 * @ampdu_delimiter_crc: A-MPDU delimiter CRC 838 * @vendor_radiotap_bitmap: radiotap vendor namespace presence bitmap 839 * @vendor_radiotap_len: radiotap vendor namespace length 840 * @vendor_radiotap_align: radiotap vendor namespace alignment. Note 841 * that the actual data must be at the start of the SKB data 842 * already. 843 * @vendor_radiotap_oui: radiotap vendor namespace OUI 844 * @vendor_radiotap_subns: radiotap vendor sub namespace 845 */ 846struct ieee80211_rx_status { 847 u64 mactime; 848 u32 device_timestamp; 849 u32 ampdu_reference; 850 u32 flag; 851 u32 vendor_radiotap_bitmap; 852 u16 vendor_radiotap_len; 853 u16 freq; 854 u8 rate_idx; 855 u8 vht_nss; 856 u8 rx_flags; 857 u8 band; 858 u8 antenna; 859 s8 signal; 860 u8 ampdu_delimiter_crc; 861 u8 vendor_radiotap_align; 862 u8 vendor_radiotap_oui[3]; 863 u8 vendor_radiotap_subns; 864}; 865 866/** 867 * enum ieee80211_conf_flags - configuration flags 868 * 869 * Flags to define PHY configuration options 870 * 871 * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this 872 * to determine for example whether to calculate timestamps for packets 873 * or not, do not use instead of filter flags! 874 * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). 875 * This is the power save mode defined by IEEE 802.11-2007 section 11.2, 876 * meaning that the hardware still wakes up for beacons, is able to 877 * transmit frames and receive the possible acknowledgment frames. 878 * Not to be confused with hardware specific wakeup/sleep states, 879 * driver is responsible for that. See the section "Powersave support" 880 * for more. 881 * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set 882 * the driver should be prepared to handle configuration requests but 883 * may turn the device off as much as possible. Typically, this flag will 884 * be set when an interface is set UP but not associated or scanning, but 885 * it can also be unset in that case when monitor interfaces are active. 886 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main 887 * operating channel. 888 */ 889enum ieee80211_conf_flags { 890 IEEE80211_CONF_MONITOR = (1<<0), 891 IEEE80211_CONF_PS = (1<<1), 892 IEEE80211_CONF_IDLE = (1<<2), 893 IEEE80211_CONF_OFFCHANNEL = (1<<3), 894}; 895 896 897/** 898 * enum ieee80211_conf_changed - denotes which configuration changed 899 * 900 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed 901 * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed 902 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed 903 * @IEEE80211_CONF_CHANGE_POWER: the TX power changed 904 * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed 905 * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed 906 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed 907 * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed 908 * Note that this is only valid if channel contexts are not used, 909 * otherwise each channel context has the number of chains listed. 910 */ 911enum ieee80211_conf_changed { 912 IEEE80211_CONF_CHANGE_SMPS = BIT(1), 913 IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), 914 IEEE80211_CONF_CHANGE_MONITOR = BIT(3), 915 IEEE80211_CONF_CHANGE_PS = BIT(4), 916 IEEE80211_CONF_CHANGE_POWER = BIT(5), 917 IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), 918 IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), 919 IEEE80211_CONF_CHANGE_IDLE = BIT(8), 920}; 921 922/** 923 * enum ieee80211_smps_mode - spatial multiplexing power save mode 924 * 925 * @IEEE80211_SMPS_AUTOMATIC: automatic 926 * @IEEE80211_SMPS_OFF: off 927 * @IEEE80211_SMPS_STATIC: static 928 * @IEEE80211_SMPS_DYNAMIC: dynamic 929 * @IEEE80211_SMPS_NUM_MODES: internal, don't use 930 */ 931enum ieee80211_smps_mode { 932 IEEE80211_SMPS_AUTOMATIC, 933 IEEE80211_SMPS_OFF, 934 IEEE80211_SMPS_STATIC, 935 IEEE80211_SMPS_DYNAMIC, 936 937 /* keep last */ 938 IEEE80211_SMPS_NUM_MODES, 939}; 940 941/** 942 * struct ieee80211_conf - configuration of the device 943 * 944 * This struct indicates how the driver shall configure the hardware. 945 * 946 * @flags: configuration flags defined above 947 * 948 * @listen_interval: listen interval in units of beacon interval 949 * @max_sleep_period: the maximum number of beacon intervals to sleep for 950 * before checking the beacon for a TIM bit (managed mode only); this 951 * value will be only achievable between DTIM frames, the hardware 952 * needs to check for the multicast traffic bit in DTIM beacons. 953 * This variable is valid only when the CONF_PS flag is set. 954 * @ps_dtim_period: The DTIM period of the AP we're connected to, for use 955 * in power saving. Power saving will not be enabled until a beacon 956 * has been received and the DTIM period is known. 957 * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the 958 * powersave documentation below. This variable is valid only when 959 * the CONF_PS flag is set. 960 * 961 * @power_level: requested transmit power (in dBm), backward compatibility 962 * value only that is set to the minimum of all interfaces 963 * 964 * @channel: the channel to tune to 965 * @channel_type: the channel (HT) type 966 * 967 * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame 968 * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, 969 * but actually means the number of transmissions not the number of retries 970 * @short_frame_max_tx_count: Maximum number of transmissions for a "short" 971 * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the 972 * number of transmissions not the number of retries 973 * 974 * @smps_mode: spatial multiplexing powersave mode; note that 975 * %IEEE80211_SMPS_STATIC is used when the device is not 976 * configured for an HT channel. 977 * Note that this is only valid if channel contexts are not used, 978 * otherwise each channel context has the number of chains listed. 979 */ 980struct ieee80211_conf { 981 u32 flags; 982 int power_level, dynamic_ps_timeout; 983 int max_sleep_period; 984 985 u16 listen_interval; 986 u8 ps_dtim_period; 987 988 u8 long_frame_max_tx_count, short_frame_max_tx_count; 989 990 struct ieee80211_channel *channel; 991 enum nl80211_channel_type channel_type; 992 enum ieee80211_smps_mode smps_mode; 993}; 994 995/** 996 * struct ieee80211_channel_switch - holds the channel switch data 997 * 998 * The information provided in this structure is required for channel switch 999 * operation. 1000 * 1001 * @timestamp: value in microseconds of the 64-bit Time Synchronization 1002 * Function (TSF) timer when the frame containing the channel switch 1003 * announcement was received. This is simply the rx.mactime parameter 1004 * the driver passed into mac80211. 1005 * @block_tx: Indicates whether transmission must be blocked before the 1006 * scheduled channel switch, as indicated by the AP. 1007 * @channel: the new channel to switch to 1008 * @count: the number of TBTT's until the channel switch event 1009 */ 1010struct ieee80211_channel_switch { 1011 u64 timestamp; 1012 bool block_tx; 1013 struct ieee80211_channel *channel; 1014 u8 count; 1015}; 1016 1017/** 1018 * enum ieee80211_vif_flags - virtual interface flags 1019 * 1020 * @IEEE80211_VIF_BEACON_FILTER: the device performs beacon filtering 1021 * on this virtual interface to avoid unnecessary CPU wakeups 1022 * @IEEE80211_VIF_SUPPORTS_CQM_RSSI: the device can do connection quality 1023 * monitoring on this virtual interface -- i.e. it can monitor 1024 * connection quality related parameters, such as the RSSI level and 1025 * provide notifications if configured trigger levels are reached. 1026 */ 1027enum ieee80211_vif_flags { 1028 IEEE80211_VIF_BEACON_FILTER = BIT(0), 1029 IEEE80211_VIF_SUPPORTS_CQM_RSSI = BIT(1), 1030}; 1031 1032/** 1033 * struct ieee80211_vif - per-interface data 1034 * 1035 * Data in this structure is continually present for driver 1036 * use during the life of a virtual interface. 1037 * 1038 * @type: type of this virtual interface 1039 * @bss_conf: BSS configuration for this interface, either our own 1040 * or the BSS we're associated to 1041 * @addr: address of this interface 1042 * @p2p: indicates whether this AP or STA interface is a p2p 1043 * interface, i.e. a GO or p2p-sta respectively 1044 * @driver_flags: flags/capabilities the driver has for this interface, 1045 * these need to be set (or cleared) when the interface is added 1046 * or, if supported by the driver, the interface type is changed 1047 * at runtime, mac80211 will never touch this field 1048 * @hw_queue: hardware queue for each AC 1049 * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only 1050 * @chanctx_conf: The channel context this interface is assigned to, or %NULL 1051 * when it is not assigned. This pointer is RCU-protected due to the TX 1052 * path needing to access it; even though the netdev carrier will always 1053 * be off when it is %NULL there can still be races and packets could be 1054 * processed after it switches back to %NULL. 1055 * @drv_priv: data area for driver use, will always be aligned to 1056 * sizeof(void *). 1057 */ 1058struct ieee80211_vif { 1059 enum nl80211_iftype type; 1060 struct ieee80211_bss_conf bss_conf; 1061 u8 addr[ETH_ALEN]; 1062 bool p2p; 1063 1064 u8 cab_queue; 1065 u8 hw_queue[IEEE80211_NUM_ACS]; 1066 1067 struct ieee80211_chanctx_conf __rcu *chanctx_conf; 1068 1069 u32 driver_flags; 1070 1071 /* must be last */ 1072 u8 drv_priv[0] __aligned(sizeof(void *)); 1073}; 1074 1075static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) 1076{ 1077#ifdef CONFIG_MAC80211_MESH 1078 return vif->type == NL80211_IFTYPE_MESH_POINT; 1079#endif 1080 return false; 1081} 1082 1083/** 1084 * enum ieee80211_key_flags - key flags 1085 * 1086 * These flags are used for communication about keys between the driver 1087 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. 1088 * 1089 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates 1090 * that the STA this key will be used with could be using QoS. 1091 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the 1092 * driver to indicate that it requires IV generation for this 1093 * particular key. 1094 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by 1095 * the driver for a TKIP key if it requires Michael MIC 1096 * generation in software. 1097 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates 1098 * that the key is pairwise rather then a shared key. 1099 * @IEEE80211_KEY_FLAG_SW_MGMT_TX: This flag should be set by the driver for a 1100 * CCMP key if it requires CCMP encryption of management frames (MFP) to 1101 * be done in software. 1102 * @IEEE80211_KEY_FLAG_PUT_IV_SPACE: This flag should be set by the driver 1103 * if space should be prepared for the IV, but the IV 1104 * itself should not be generated. Do not set together with 1105 * @IEEE80211_KEY_FLAG_GENERATE_IV on the same key. 1106 * @IEEE80211_KEY_FLAG_RX_MGMT: This key will be used to decrypt received 1107 * management frames. The flag can help drivers that have a hardware 1108 * crypto implementation that doesn't deal with management frames 1109 * properly by allowing them to not upload the keys to hardware and 1110 * fall back to software crypto. Note that this flag deals only with 1111 * RX, if your crypto engine can't deal with TX you can also set the 1112 * %IEEE80211_KEY_FLAG_SW_MGMT_TX flag to encrypt such frames in SW. 1113 */ 1114enum ieee80211_key_flags { 1115 IEEE80211_KEY_FLAG_WMM_STA = 1<<0, 1116 IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, 1117 IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, 1118 IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, 1119 IEEE80211_KEY_FLAG_SW_MGMT_TX = 1<<4, 1120 IEEE80211_KEY_FLAG_PUT_IV_SPACE = 1<<5, 1121 IEEE80211_KEY_FLAG_RX_MGMT = 1<<6, 1122}; 1123 1124/** 1125 * struct ieee80211_key_conf - key information 1126 * 1127 * This key information is given by mac80211 to the driver by 1128 * the set_key() callback in &struct ieee80211_ops. 1129 * 1130 * @hw_key_idx: To be set by the driver, this is the key index the driver 1131 * wants to be given when a frame is transmitted and needs to be 1132 * encrypted in hardware. 1133 * @cipher: The key's cipher suite selector. 1134 * @flags: key flags, see &enum ieee80211_key_flags. 1135 * @keyidx: the key index (0-3) 1136 * @keylen: key material length 1137 * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) 1138 * data block: 1139 * - Temporal Encryption Key (128 bits) 1140 * - Temporal Authenticator Tx MIC Key (64 bits) 1141 * - Temporal Authenticator Rx MIC Key (64 bits) 1142 * @icv_len: The ICV length for this key type 1143 * @iv_len: The IV length for this key type 1144 */ 1145struct ieee80211_key_conf { 1146 u32 cipher; 1147 u8 icv_len; 1148 u8 iv_len; 1149 u8 hw_key_idx; 1150 u8 flags; 1151 s8 keyidx; 1152 u8 keylen; 1153 u8 key[0]; 1154}; 1155 1156/** 1157 * enum set_key_cmd - key command 1158 * 1159 * Used with the set_key() callback in &struct ieee80211_ops, this 1160 * indicates whether a key is being removed or added. 1161 * 1162 * @SET_KEY: a key is set 1163 * @DISABLE_KEY: a key must be disabled 1164 */ 1165enum set_key_cmd { 1166 SET_KEY, DISABLE_KEY, 1167}; 1168 1169/** 1170 * enum ieee80211_sta_state - station state 1171 * 1172 * @IEEE80211_STA_NOTEXIST: station doesn't exist at all, 1173 * this is a special state for add/remove transitions 1174 * @IEEE80211_STA_NONE: station exists without special state 1175 * @IEEE80211_STA_AUTH: station is authenticated 1176 * @IEEE80211_STA_ASSOC: station is associated 1177 * @IEEE80211_STA_AUTHORIZED: station is authorized (802.1X) 1178 */ 1179enum ieee80211_sta_state { 1180 /* NOTE: These need to be ordered correctly! */ 1181 IEEE80211_STA_NOTEXIST, 1182 IEEE80211_STA_NONE, 1183 IEEE80211_STA_AUTH, 1184 IEEE80211_STA_ASSOC, 1185 IEEE80211_STA_AUTHORIZED, 1186}; 1187 1188/** 1189 * struct ieee80211_sta - station table entry 1190 * 1191 * A station table entry represents a station we are possibly 1192 * communicating with. Since stations are RCU-managed in 1193 * mac80211, any ieee80211_sta pointer you get access to must 1194 * either be protected by rcu_read_lock() explicitly or implicitly, 1195 * or you must take good care to not use such a pointer after a 1196 * call to your sta_remove callback that removed it. 1197 * 1198 * @addr: MAC address 1199 * @aid: AID we assigned to the station if we're an AP 1200 * @supp_rates: Bitmap of supported rates (per band) 1201 * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities 1202 * @vht_cap: VHT capabilities of this STA; Not restricting any capabilities 1203 * of remote STA. Taking as is. 1204 * @wme: indicates whether the STA supports WME. Only valid during AP-mode. 1205 * @drv_priv: data area for driver use, will always be aligned to 1206 * sizeof(void *), size is determined in hw information. 1207 * @uapsd_queues: bitmap of queues configured for uapsd. Only valid 1208 * if wme is supported. 1209 * @max_sp: max Service Period. Only valid if wme is supported. 1210 */ 1211struct ieee80211_sta { 1212 u32 supp_rates[IEEE80211_NUM_BANDS]; 1213 u8 addr[ETH_ALEN]; 1214 u16 aid; 1215 struct ieee80211_sta_ht_cap ht_cap; 1216 struct ieee80211_sta_vht_cap vht_cap; 1217 bool wme; 1218 u8 uapsd_queues; 1219 u8 max_sp; 1220 1221 /* must be last */ 1222 u8 drv_priv[0] __aligned(sizeof(void *)); 1223}; 1224 1225/** 1226 * enum sta_notify_cmd - sta notify command 1227 * 1228 * Used with the sta_notify() callback in &struct ieee80211_ops, this 1229 * indicates if an associated station made a power state transition. 1230 * 1231 * @STA_NOTIFY_SLEEP: a station is now sleeping 1232 * @STA_NOTIFY_AWAKE: a sleeping station woke up 1233 */ 1234enum sta_notify_cmd { 1235 STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, 1236}; 1237 1238/** 1239 * struct ieee80211_tx_control - TX control data 1240 * 1241 * @sta: station table entry, this sta pointer may be NULL and 1242 * it is not allowed to copy the pointer, due to RCU. 1243 */ 1244struct ieee80211_tx_control { 1245 struct ieee80211_sta *sta; 1246}; 1247 1248/** 1249 * enum ieee80211_hw_flags - hardware flags 1250 * 1251 * These flags are used to indicate hardware capabilities to 1252 * the stack. Generally, flags here should have their meaning 1253 * done in a way that the simplest hardware doesn't need setting 1254 * any particular flags. There are some exceptions to this rule, 1255 * however, so you are advised to review these flags carefully. 1256 * 1257 * @IEEE80211_HW_HAS_RATE_CONTROL: 1258 * The hardware or firmware includes rate control, and cannot be 1259 * controlled by the stack. As such, no rate control algorithm 1260 * should be instantiated, and the TX rate reported to userspace 1261 * will be taken from the TX status instead of the rate control 1262 * algorithm. 1263 * Note that this requires that the driver implement a number of 1264 * callbacks so it has the correct information, it needs to have 1265 * the @set_rts_threshold callback and must look at the BSS config 1266 * @use_cts_prot for G/N protection, @use_short_slot for slot 1267 * timing in 2.4 GHz and @use_short_preamble for preambles for 1268 * CCK frames. 1269 * 1270 * @IEEE80211_HW_RX_INCLUDES_FCS: 1271 * Indicates that received frames passed to the stack include 1272 * the FCS at the end. 1273 * 1274 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: 1275 * Some wireless LAN chipsets buffer broadcast/multicast frames 1276 * for power saving stations in the hardware/firmware and others 1277 * rely on the host system for such buffering. This option is used 1278 * to configure the IEEE 802.11 upper layer to buffer broadcast and 1279 * multicast frames when there are power saving stations so that 1280 * the driver can fetch them with ieee80211_get_buffered_bc(). 1281 * 1282 * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: 1283 * Hardware is not capable of short slot operation on the 2.4 GHz band. 1284 * 1285 * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: 1286 * Hardware is not capable of receiving frames with short preamble on 1287 * the 2.4 GHz band. 1288 * 1289 * @IEEE80211_HW_SIGNAL_UNSPEC: 1290 * Hardware can provide signal values but we don't know its units. We 1291 * expect values between 0 and @max_signal. 1292 * If possible please provide dB or dBm instead. 1293 * 1294 * @IEEE80211_HW_SIGNAL_DBM: 1295 * Hardware gives signal values in dBm, decibel difference from 1296 * one milliwatt. This is the preferred method since it is standardized 1297 * between different devices. @max_signal does not need to be set. 1298 * 1299 * @IEEE80211_HW_SPECTRUM_MGMT: 1300 * Hardware supports spectrum management defined in 802.11h 1301 * Measurement, Channel Switch, Quieting, TPC 1302 * 1303 * @IEEE80211_HW_AMPDU_AGGREGATION: 1304 * Hardware supports 11n A-MPDU aggregation. 1305 * 1306 * @IEEE80211_HW_SUPPORTS_PS: 1307 * Hardware has power save support (i.e. can go to sleep). 1308 * 1309 * @IEEE80211_HW_PS_NULLFUNC_STACK: 1310 * Hardware requires nullfunc frame handling in stack, implies 1311 * stack support for dynamic PS. 1312 * 1313 * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: 1314 * Hardware has support for dynamic PS. 1315 * 1316 * @IEEE80211_HW_MFP_CAPABLE: 1317 * Hardware supports management frame protection (MFP, IEEE 802.11w). 1318 * 1319 * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: 1320 * Hardware supports static spatial multiplexing powersave, 1321 * ie. can turn off all but one chain even on HT connections 1322 * that should be using more chains. 1323 * 1324 * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: 1325 * Hardware supports dynamic spatial multiplexing powersave, 1326 * ie. can turn off all but one chain and then wake the rest 1327 * up as required after, for example, rts/cts handshake. 1328 * 1329 * @IEEE80211_HW_SUPPORTS_UAPSD: 1330 * Hardware supports Unscheduled Automatic Power Save Delivery 1331 * (U-APSD) in managed mode. The mode is configured with 1332 * conf_tx() operation. 1333 * 1334 * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: 1335 * Hardware can provide ack status reports of Tx frames to 1336 * the stack. 1337 * 1338 * @IEEE80211_HW_CONNECTION_MONITOR: 1339 * The hardware performs its own connection monitoring, including 1340 * periodic keep-alives to the AP and probing the AP on beacon loss. 1341 * When this flag is set, signaling beacon-loss will cause an immediate 1342 * change to disassociated state. 1343 * 1344 * @IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC: 1345 * This device needs to get data from beacon before association (i.e. 1346 * dtim_period). 1347 * 1348 * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports 1349 * per-station GTKs as used by IBSS RSN or during fast transition. If 1350 * the device doesn't support per-station GTKs, but can be asked not 1351 * to decrypt group addressed frames, then IBSS RSN support is still 1352 * possible but software crypto will be used. Advertise the wiphy flag 1353 * only in that case. 1354 * 1355 * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device 1356 * autonomously manages the PS status of connected stations. When 1357 * this flag is set mac80211 will not trigger PS mode for connected 1358 * stations based on the PM bit of incoming frames. 1359 * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure 1360 * the PS mode of connected stations. 1361 * 1362 * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session 1363 * setup strictly in HW. mac80211 should not attempt to do this in 1364 * software. 1365 * 1366 * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of 1367 * a virtual monitor interface when monitor interfaces are the only 1368 * active interfaces. 1369 * 1370 * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface 1371 * queue mapping in order to use different queues (not just one per AC) 1372 * for different virtual interfaces. See the doc section on HW queue 1373 * control for more details. 1374 * 1375 * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any 1376 * P2P Interface. This will be honoured even if more than one interface 1377 * is supported. 1378 * 1379 * @IEEE80211_HW_TIMING_BEACON_ONLY: Use sync timing from beacon frames 1380 * only, to allow getting TBTT of a DTIM beacon. 1381 */ 1382enum ieee80211_hw_flags { 1383 IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, 1384 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, 1385 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, 1386 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, 1387 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, 1388 IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, 1389 IEEE80211_HW_SIGNAL_DBM = 1<<6, 1390 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC = 1<<7, 1391 IEEE80211_HW_SPECTRUM_MGMT = 1<<8, 1392 IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, 1393 IEEE80211_HW_SUPPORTS_PS = 1<<10, 1394 IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, 1395 IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, 1396 IEEE80211_HW_MFP_CAPABLE = 1<<13, 1397 IEEE80211_HW_WANT_MONITOR_VIF = 1<<14, 1398 IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, 1399 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, 1400 IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, 1401 IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, 1402 IEEE80211_HW_CONNECTION_MONITOR = 1<<19, 1403 IEEE80211_HW_QUEUE_CONTROL = 1<<20, 1404 IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, 1405 IEEE80211_HW_AP_LINK_PS = 1<<22, 1406 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW = 1<<23, 1407 IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF = 1<<25, 1408 IEEE80211_HW_TIMING_BEACON_ONLY = 1<<26, 1409}; 1410 1411/** 1412 * struct ieee80211_hw - hardware information and state 1413 * 1414 * This structure contains the configuration and hardware 1415 * information for an 802.11 PHY. 1416 * 1417 * @wiphy: This points to the &struct wiphy allocated for this 1418 * 802.11 PHY. You must fill in the @perm_addr and @dev 1419 * members of this structure using SET_IEEE80211_DEV() 1420 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported 1421 * bands (with channels, bitrates) are registered here. 1422 * 1423 * @conf: &struct ieee80211_conf, device configuration, don't use. 1424 * 1425 * @priv: pointer to private area that was allocated for driver use 1426 * along with this structure. 1427 * 1428 * @flags: hardware flags, see &enum ieee80211_hw_flags. 1429 * 1430 * @extra_tx_headroom: headroom to reserve in each transmit skb 1431 * for use by the driver (e.g. for transmit headers.) 1432 * 1433 * @channel_change_time: time (in microseconds) it takes to change channels. 1434 * 1435 * @max_signal: Maximum value for signal (rssi) in RX information, used 1436 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB 1437 * 1438 * @max_listen_interval: max listen interval in units of beacon interval 1439 * that HW supports 1440 * 1441 * @queues: number of available hardware transmit queues for 1442 * data packets. WMM/QoS requires at least four, these 1443 * queues need to have configurable access parameters. 1444 * 1445 * @rate_control_algorithm: rate control algorithm for this hardware. 1446 * If unset (NULL), the default algorithm will be used. Must be 1447 * set before calling ieee80211_register_hw(). 1448 * 1449 * @vif_data_size: size (in bytes) of the drv_priv data area 1450 * within &struct ieee80211_vif. 1451 * @sta_data_size: size (in bytes) of the drv_priv data area 1452 * within &struct ieee80211_sta. 1453 * @chanctx_data_size: size (in bytes) of the drv_priv data area 1454 * within &struct ieee80211_chanctx_conf. 1455 * 1456 * @max_rates: maximum number of alternate rate retry stages the hw 1457 * can handle. 1458 * @max_report_rates: maximum number of alternate rate retry stages 1459 * the hw can report back. 1460 * @max_rate_tries: maximum number of tries for each stage 1461 * 1462 * @napi_weight: weight used for NAPI polling. You must specify an 1463 * appropriate value here if a napi_poll operation is provided 1464 * by your driver. 1465 * 1466 * @max_rx_aggregation_subframes: maximum buffer size (number of 1467 * sub-frames) to be used for A-MPDU block ack receiver 1468 * aggregation. 1469 * This is only relevant if the device has restrictions on the 1470 * number of subframes, if it relies on mac80211 to do reordering 1471 * it shouldn't be set. 1472 * 1473 * @max_tx_aggregation_subframes: maximum number of subframes in an 1474 * aggregate an HT driver will transmit, used by the peer as a 1475 * hint to size its reorder buffer. 1476 * 1477 * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX 1478 * (if %IEEE80211_HW_QUEUE_CONTROL is set) 1479 * 1480 * @radiotap_mcs_details: lists which MCS information can the HW 1481 * reports, by default it is set to _MCS, _GI and _BW but doesn't 1482 * include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_* values, only 1483 * adding _BW is supported today. 1484 * 1485 * @radiotap_vht_details: lists which VHT MCS information the HW reports, 1486 * the default is _GI | _BANDWIDTH. 1487 * Use the %IEEE80211_RADIOTAP_VHT_KNOWN_* values. 1488 * 1489 * @netdev_features: netdev features to be set in each netdev created 1490 * from this HW. Note only HW checksum features are currently 1491 * compatible with mac80211. Other feature bits will be rejected. 1492 */ 1493struct ieee80211_hw { 1494 struct ieee80211_conf conf; 1495 struct wiphy *wiphy; 1496 const char *rate_control_algorithm; 1497 void *priv; 1498 u32 flags; 1499 unsigned int extra_tx_headroom; 1500 int channel_change_time; 1501 int vif_data_size; 1502 int sta_data_size; 1503 int chanctx_data_size; 1504 int napi_weight; 1505 u16 queues; 1506 u16 max_listen_interval; 1507 s8 max_signal; 1508 u8 max_rates; 1509 u8 max_report_rates; 1510 u8 max_rate_tries; 1511 u8 max_rx_aggregation_subframes; 1512 u8 max_tx_aggregation_subframes; 1513 u8 offchannel_tx_hw_queue; 1514 u8 radiotap_mcs_details; 1515 u16 radiotap_vht_details; 1516 netdev_features_t netdev_features; 1517}; 1518 1519/** 1520 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy 1521 * 1522 * @wiphy: the &struct wiphy which we want to query 1523 * 1524 * mac80211 drivers can use this to get to their respective 1525 * &struct ieee80211_hw. Drivers wishing to get to their own private 1526 * structure can then access it via hw->priv. Note that mac802111 drivers should 1527 * not use wiphy_priv() to try to get their private driver structure as this 1528 * is already used internally by mac80211. 1529 * 1530 * Return: The mac80211 driver hw struct of @wiphy. 1531 */ 1532struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); 1533 1534/** 1535 * SET_IEEE80211_DEV - set device for 802.11 hardware 1536 * 1537 * @hw: the &struct ieee80211_hw to set the device for 1538 * @dev: the &struct device of this 802.11 device 1539 */ 1540static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) 1541{ 1542 set_wiphy_dev(hw->wiphy, dev); 1543} 1544 1545/** 1546 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware 1547 * 1548 * @hw: the &struct ieee80211_hw to set the MAC address for 1549 * @addr: the address to set 1550 */ 1551static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) 1552{ 1553 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); 1554} 1555 1556static inline struct ieee80211_rate * 1557ieee80211_get_tx_rate(const struct ieee80211_hw *hw, 1558 const struct ieee80211_tx_info *c) 1559{ 1560 if (WARN_ON_ONCE(c->control.rates[0].idx < 0)) 1561 return NULL; 1562 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; 1563} 1564 1565static inline struct ieee80211_rate * 1566ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, 1567 const struct ieee80211_tx_info *c) 1568{ 1569 if (c->control.rts_cts_rate_idx < 0) 1570 return NULL; 1571 return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; 1572} 1573 1574static inline struct ieee80211_rate * 1575ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, 1576 const struct ieee80211_tx_info *c, int idx) 1577{ 1578 if (c->control.rates[idx + 1].idx < 0) 1579 return NULL; 1580 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; 1581} 1582 1583/** 1584 * ieee80211_free_txskb - free TX skb 1585 * @hw: the hardware 1586 * @skb: the skb 1587 * 1588 * Free a transmit skb. Use this funtion when some failure 1589 * to transmit happened and thus status cannot be reported. 1590 */ 1591void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb); 1592 1593/** 1594 * DOC: Hardware crypto acceleration 1595 * 1596 * mac80211 is capable of taking advantage of many hardware 1597 * acceleration designs for encryption and decryption operations. 1598 * 1599 * The set_key() callback in the &struct ieee80211_ops for a given 1600 * device is called to enable hardware acceleration of encryption and 1601 * decryption. The callback takes a @sta parameter that will be NULL 1602 * for default keys or keys used for transmission only, or point to 1603 * the station information for the peer for individual keys. 1604 * Multiple transmission keys with the same key index may be used when 1605 * VLANs are configured for an access point. 1606 * 1607 * When transmitting, the TX control data will use the @hw_key_idx 1608 * selected by the driver by modifying the &struct ieee80211_key_conf 1609 * pointed to by the @key parameter to the set_key() function. 1610 * 1611 * The set_key() call for the %SET_KEY command should return 0 if 1612 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be 1613 * added; if you return 0 then hw_key_idx must be assigned to the 1614 * hardware key index, you are free to use the full u8 range. 1615 * 1616 * When the cmd is %DISABLE_KEY then it must succeed. 1617 * 1618 * Note that it is permissible to not decrypt a frame even if a key 1619 * for it has been uploaded to hardware, the stack will not make any 1620 * decision based on whether a key has been uploaded or not but rather 1621 * based on the receive flags. 1622 * 1623 * The &struct ieee80211_key_conf structure pointed to by the @key 1624 * parameter is guaranteed to be valid until another call to set_key() 1625 * removes it, but it can only be used as a cookie to differentiate 1626 * keys. 1627 * 1628 * In TKIP some HW need to be provided a phase 1 key, for RX decryption 1629 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key 1630 * handler. 1631 * The update_tkip_key() call updates the driver with the new phase 1 key. 1632 * This happens every time the iv16 wraps around (every 65536 packets). The 1633 * set_key() call will happen only once for each key (unless the AP did 1634 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is 1635 * provided by update_tkip_key only. The trigger that makes mac80211 call this 1636 * handler is software decryption with wrap around of iv16. 1637 * 1638 * The set_default_unicast_key() call updates the default WEP key index 1639 * configured to the hardware for WEP encryption type. This is required 1640 * for devices that support offload of data packets (e.g. ARP responses). 1641 */ 1642 1643/** 1644 * DOC: Powersave support 1645 * 1646 * mac80211 has support for various powersave implementations. 1647 * 1648 * First, it can support hardware that handles all powersaving by itself, 1649 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware 1650 * flag. In that case, it will be told about the desired powersave mode 1651 * with the %IEEE80211_CONF_PS flag depending on the association status. 1652 * The hardware must take care of sending nullfunc frames when necessary, 1653 * i.e. when entering and leaving powersave mode. The hardware is required 1654 * to look at the AID in beacons and signal to the AP that it woke up when 1655 * it finds traffic directed to it. 1656 * 1657 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in 1658 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused 1659 * with hardware wakeup and sleep states. Driver is responsible for waking 1660 * up the hardware before issuing commands to the hardware and putting it 1661 * back to sleep at appropriate times. 1662 * 1663 * When PS is enabled, hardware needs to wakeup for beacons and receive the 1664 * buffered multicast/broadcast frames after the beacon. Also it must be 1665 * possible to send frames and receive the acknowledment frame. 1666 * 1667 * Other hardware designs cannot send nullfunc frames by themselves and also 1668 * need software support for parsing the TIM bitmap. This is also supported 1669 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and 1670 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still 1671 * required to pass up beacons. The hardware is still required to handle 1672 * waking up for multicast traffic; if it cannot the driver must handle that 1673 * as best as it can, mac80211 is too slow to do that. 1674 * 1675 * Dynamic powersave is an extension to normal powersave in which the 1676 * hardware stays awake for a user-specified period of time after sending a 1677 * frame so that reply frames need not be buffered and therefore delayed to 1678 * the next wakeup. It's compromise of getting good enough latency when 1679 * there's data traffic and still saving significantly power in idle 1680 * periods. 1681 * 1682 * Dynamic powersave is simply supported by mac80211 enabling and disabling 1683 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS 1684 * flag and mac80211 will handle everything automatically. Additionally, 1685 * hardware having support for the dynamic PS feature may set the 1686 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support 1687 * dynamic PS mode itself. The driver needs to look at the 1688 * @dynamic_ps_timeout hardware configuration value and use it that value 1689 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable 1690 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS 1691 * enabled whenever user has enabled powersave. 1692 * 1693 * Driver informs U-APSD client support by enabling 1694 * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the 1695 * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS 1696 * Nullfunc frames and stay awake until the service period has ended. To 1697 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames 1698 * from that AC are transmitted with powersave enabled. 1699 * 1700 * Note: U-APSD client mode is not yet supported with 1701 * %IEEE80211_HW_PS_NULLFUNC_STACK. 1702 */ 1703 1704/** 1705 * DOC: Beacon filter support 1706 * 1707 * Some hardware have beacon filter support to reduce host cpu wakeups 1708 * which will reduce system power consumption. It usually works so that 1709 * the firmware creates a checksum of the beacon but omits all constantly 1710 * changing elements (TSF, TIM etc). Whenever the checksum changes the 1711 * beacon is forwarded to the host, otherwise it will be just dropped. That 1712 * way the host will only receive beacons where some relevant information 1713 * (for example ERP protection or WMM settings) have changed. 1714 * 1715 * Beacon filter support is advertised with the %IEEE80211_VIF_BEACON_FILTER 1716 * interface capability. The driver needs to enable beacon filter support 1717 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When 1718 * power save is enabled, the stack will not check for beacon loss and the 1719 * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). 1720 * 1721 * The time (or number of beacons missed) until the firmware notifies the 1722 * driver of a beacon loss event (which in turn causes the driver to call 1723 * ieee80211_beacon_loss()) should be configurable and will be controlled 1724 * by mac80211 and the roaming algorithm in the future. 1725 * 1726 * Since there may be constantly changing information elements that nothing 1727 * in the software stack cares about, we will, in the future, have mac80211 1728 * tell the driver which information elements are interesting in the sense 1729 * that we want to see changes in them. This will include 1730 * - a list of information element IDs 1731 * - a list of OUIs for the vendor information element 1732 * 1733 * Ideally, the hardware would filter out any beacons without changes in the 1734 * requested elements, but if it cannot support that it may, at the expense 1735 * of some efficiency, filter out only a subset. For example, if the device 1736 * doesn't support checking for OUIs it should pass up all changes in all 1737 * vendor information elements. 1738 * 1739 * Note that change, for the sake of simplification, also includes information 1740 * elements appearing or disappearing from the beacon. 1741 * 1742 * Some hardware supports an "ignore list" instead, just make sure nothing 1743 * that was requested is on the ignore list, and include commonly changing 1744 * information element IDs in the ignore list, for example 11 (BSS load) and 1745 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, 1746 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility 1747 * it could also include some currently unused IDs. 1748 * 1749 * 1750 * In addition to these capabilities, hardware should support notifying the 1751 * host of changes in the beacon RSSI. This is relevant to implement roaming 1752 * when no traffic is flowing (when traffic is flowing we see the RSSI of 1753 * the received data packets). This can consist in notifying the host when 1754 * the RSSI changes significantly or when it drops below or rises above 1755 * configurable thresholds. In the future these thresholds will also be 1756 * configured by mac80211 (which gets them from userspace) to implement 1757 * them as the roaming algorithm requires. 1758 * 1759 * If the hardware cannot implement this, the driver should ask it to 1760 * periodically pass beacon frames to the host so that software can do the 1761 * signal strength threshold checking. 1762 */ 1763 1764/** 1765 * DOC: Spatial multiplexing power save 1766 * 1767 * SMPS (Spatial multiplexing power save) is a mechanism to conserve 1768 * power in an 802.11n implementation. For details on the mechanism 1769 * and rationale, please refer to 802.11 (as amended by 802.11n-2009) 1770 * "11.2.3 SM power save". 1771 * 1772 * The mac80211 implementation is capable of sending action frames 1773 * to update the AP about the station's SMPS mode, and will instruct 1774 * the driver to enter the specific mode. It will also announce the 1775 * requested SMPS mode during the association handshake. Hardware 1776 * support for this feature is required, and can be indicated by 1777 * hardware flags. 1778 * 1779 * The default mode will be "automatic", which nl80211/cfg80211 1780 * defines to be dynamic SMPS in (regular) powersave, and SMPS 1781 * turned off otherwise. 1782 * 1783 * To support this feature, the driver must set the appropriate 1784 * hardware support flags, and handle the SMPS flag to the config() 1785 * operation. It will then with this mechanism be instructed to 1786 * enter the requested SMPS mode while associated to an HT AP. 1787 */ 1788 1789/** 1790 * DOC: Frame filtering 1791 * 1792 * mac80211 requires to see many management frames for proper 1793 * operation, and users may want to see many more frames when 1794 * in monitor mode. However, for best CPU usage and power consumption, 1795 * having as few frames as possible percolate through the stack is 1796 * desirable. Hence, the hardware should filter as much as possible. 1797 * 1798 * To achieve this, mac80211 uses filter flags (see below) to tell 1799 * the driver's configure_filter() function which frames should be 1800 * passed to mac80211 and which should be filtered out. 1801 * 1802 * Before configure_filter() is invoked, the prepare_multicast() 1803 * callback is invoked with the parameters @mc_count and @mc_list 1804 * for the combined multicast address list of all virtual interfaces. 1805 * It's use is optional, and it returns a u64 that is passed to 1806 * configure_filter(). Additionally, configure_filter() has the 1807 * arguments @changed_flags telling which flags were changed and 1808 * @total_flags with the new flag states. 1809 * 1810 * If your device has no multicast address filters your driver will 1811 * need to check both the %FIF_ALLMULTI flag and the @mc_count 1812 * parameter to see whether multicast frames should be accepted 1813 * or dropped. 1814 * 1815 * All unsupported flags in @total_flags must be cleared. 1816 * Hardware does not support a flag if it is incapable of _passing_ 1817 * the frame to the stack. Otherwise the driver must ignore 1818 * the flag, but not clear it. 1819 * You must _only_ clear the flag (announce no support for the 1820 * flag to mac80211) if you are not able to pass the packet type 1821 * to the stack (so the hardware always filters it). 1822 * So for example, you should clear @FIF_CONTROL, if your hardware 1823 * always filters control frames. If your hardware always passes 1824 * control frames to the kernel and is incapable of filtering them, 1825 * you do _not_ clear the @FIF_CONTROL flag. 1826 * This rule applies to all other FIF flags as well. 1827 */ 1828 1829/** 1830 * DOC: AP support for powersaving clients 1831 * 1832 * In order to implement AP and P2P GO modes, mac80211 has support for 1833 * client powersaving, both "legacy" PS (PS-Poll/null data) and uAPSD. 1834 * There currently is no support for sAPSD. 1835 * 1836 * There is one assumption that mac80211 makes, namely that a client 1837 * will not poll with PS-Poll and trigger with uAPSD at the same time. 1838 * Both are supported, and both can be used by the same client, but 1839 * they can't be used concurrently by the same client. This simplifies 1840 * the driver code. 1841 * 1842 * The first thing to keep in mind is that there is a flag for complete 1843 * driver implementation: %IEEE80211_HW_AP_LINK_PS. If this flag is set, 1844 * mac80211 expects the driver to handle most of the state machine for 1845 * powersaving clients and will ignore the PM bit in incoming frames. 1846 * Drivers then use ieee80211_sta_ps_transition() to inform mac80211 of 1847 * stations' powersave transitions. In this mode, mac80211 also doesn't 1848 * handle PS-Poll/uAPSD. 1849 * 1850 * In the mode without %IEEE80211_HW_AP_LINK_PS, mac80211 will check the 1851 * PM bit in incoming frames for client powersave transitions. When a 1852 * station goes to sleep, we will stop transmitting to it. There is, 1853 * however, a race condition: a station might go to sleep while there is 1854 * data buffered on hardware queues. If the device has support for this 1855 * it will reject frames, and the driver should give the frames back to 1856 * mac80211 with the %IEEE80211_TX_STAT_TX_FILTERED flag set which will 1857 * cause mac80211 to retry the frame when the station wakes up. The 1858 * driver is also notified of powersave transitions by calling its 1859 * @sta_notify callback. 1860 * 1861 * When the station is asleep, it has three choices: it can wake up, 1862 * it can PS-Poll, or it can possibly start a uAPSD service period. 1863 * Waking up is implemented by simply transmitting all buffered (and 1864 * filtered) frames to the station. This is the easiest case. When 1865 * the station sends a PS-Poll or a uAPSD trigger frame, mac80211 1866 * will inform the driver of this with the @allow_buffered_frames 1867 * callback; this callback is optional. mac80211 will then transmit 1868 * the frames as usual and set the %IEEE80211_TX_CTL_NO_PS_BUFFER 1869 * on each frame. The last frame in the service period (or the only 1870 * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to 1871 * indicate that it ends the service period; as this frame must have 1872 * TX status report it also sets %IEEE80211_TX_CTL_REQ_TX_STATUS. 1873 * When TX status is reported for this frame, the service period is 1874 * marked has having ended and a new one can be started by the peer. 1875 * 1876 * Additionally, non-bufferable MMPDUs can also be transmitted by 1877 * mac80211 with the %IEEE80211_TX_CTL_NO_PS_BUFFER set in them. 1878 * 1879 * Another race condition can happen on some devices like iwlwifi 1880 * when there are frames queued for the station and it wakes up 1881 * or polls; the frames that are already queued could end up being 1882 * transmitted first instead, causing reordering and/or wrong 1883 * processing of the EOSP. The cause is that allowing frames to be 1884 * transmitted to a certain station is out-of-band communication to 1885 * the device. To allow this problem to be solved, the driver can 1886 * call ieee80211_sta_block_awake() if frames are buffered when it 1887 * is notified that the station went to sleep. When all these frames 1888 * have been filtered (see above), it must call the function again 1889 * to indicate that the station is no longer blocked. 1890 * 1891 * If the driver buffers frames in the driver for aggregation in any 1892 * way, it must use the ieee80211_sta_set_buffered() call when it is 1893 * notified of the station going to sleep to inform mac80211 of any 1894 * TIDs that have frames buffered. Note that when a station wakes up 1895 * this information is reset (hence the requirement to call it when 1896 * informed of the station going to sleep). Then, when a service 1897 * period starts for any reason, @release_buffered_frames is called 1898 * with the number of frames to be released and which TIDs they are 1899 * to come from. In this case, the driver is responsible for setting 1900 * the EOSP (for uAPSD) and MORE_DATA bits in the released frames, 1901 * to help the @more_data paramter is passed to tell the driver if 1902 * there is more data on other TIDs -- the TIDs to release frames 1903 * from are ignored since mac80211 doesn't know how many frames the 1904 * buffers for those TIDs contain. 1905 * 1906 * If the driver also implement GO mode, where absence periods may 1907 * shorten service periods (or abort PS-Poll responses), it must 1908 * filter those response frames except in the case of frames that 1909 * are buffered in the driver -- those must remain buffered to avoid 1910 * reordering. Because it is possible that no frames are released 1911 * in this case, the driver must call ieee80211_sta_eosp_irqsafe() 1912 * to indicate to mac80211 that the service period ended anyway. 1913 * 1914 * Finally, if frames from multiple TIDs are released from mac80211 1915 * but the driver might reorder them, it must clear & set the flags 1916 * appropriately (only the last frame may have %IEEE80211_TX_STATUS_EOSP) 1917 * and also take care of the EOSP and MORE_DATA bits in the frame. 1918 * The driver may also use ieee80211_sta_eosp_irqsafe() in this case. 1919 */ 1920 1921/** 1922 * DOC: HW queue control 1923 * 1924 * Before HW queue control was introduced, mac80211 only had a single static 1925 * assignment of per-interface AC software queues to hardware queues. This 1926 * was problematic for a few reasons: 1927 * 1) off-channel transmissions might get stuck behind other frames 1928 * 2) multiple virtual interfaces couldn't be handled correctly 1929 * 3) after-DTIM frames could get stuck behind other frames 1930 * 1931 * To solve this, hardware typically uses multiple different queues for all 1932 * the different usages, and this needs to be propagated into mac80211 so it 1933 * won't have the same problem with the software queues. 1934 * 1935 * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability 1936 * flag that tells it that the driver implements its own queue control. To do 1937 * so, the driver will set up the various queues in each &struct ieee80211_vif 1938 * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will 1939 * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and 1940 * if necessary will queue the frame on the right software queue that mirrors 1941 * the hardware queue. 1942 * Additionally, the driver has to then use these HW queue IDs for the queue 1943 * management functions (ieee80211_stop_queue() et al.) 1944 * 1945 * The driver is free to set up the queue mappings as needed, multiple virtual 1946 * interfaces may map to the same hardware queues if needed. The setup has to 1947 * happen during add_interface or change_interface callbacks. For example, a 1948 * driver supporting station+station and station+AP modes might decide to have 1949 * 10 hardware queues to handle different scenarios: 1950 * 1951 * 4 AC HW queues for 1st vif: 0, 1, 2, 3 1952 * 4 AC HW queues for 2nd vif: 4, 5, 6, 7 1953 * after-DTIM queue for AP: 8 1954 * off-channel queue: 9 1955 * 1956 * It would then set up the hardware like this: 1957 * hw.offchannel_tx_hw_queue = 9 1958 * 1959 * and the first virtual interface that is added as follows: 1960 * vif.hw_queue[IEEE80211_AC_VO] = 0 1961 * vif.hw_queue[IEEE80211_AC_VI] = 1 1962 * vif.hw_queue[IEEE80211_AC_BE] = 2 1963 * vif.hw_queue[IEEE80211_AC_BK] = 3 1964 * vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE 1965 * and the second virtual interface with 4-7. 1966 * 1967 * If queue 6 gets full, for example, mac80211 would only stop the second 1968 * virtual interface's BE queue since virtual interface queues are per AC. 1969 * 1970 * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE 1971 * whenever the queue is not used (i.e. the interface is not in AP mode) if the 1972 * queue could potentially be shared since mac80211 will look at cab_queue when 1973 * a queue is stopped/woken even if the interface is not in AP mode. 1974 */ 1975 1976/** 1977 * enum ieee80211_filter_flags - hardware filter flags 1978 * 1979 * These flags determine what the filter in hardware should be 1980 * programmed to let through and what should not be passed to the 1981 * stack. It is always safe to pass more frames than requested, 1982 * but this has negative impact on power consumption. 1983 * 1984 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, 1985 * think of the BSS as your network segment and then this corresponds 1986 * to the regular ethernet device promiscuous mode. 1987 * 1988 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested 1989 * by the user or if the hardware is not capable of filtering by 1990 * multicast address. 1991 * 1992 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the 1993 * %RX_FLAG_FAILED_FCS_CRC for them) 1994 * 1995 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set 1996 * the %RX_FLAG_FAILED_PLCP_CRC for them 1997 * 1998 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate 1999 * to the hardware that it should not filter beacons or probe responses 2000 * by BSSID. Filtering them can greatly reduce the amount of processing 2001 * mac80211 needs to do and the amount of CPU wakeups, so you should 2002 * honour this flag if possible. 2003 * 2004 * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS 2005 * is not set then only those addressed to this station. 2006 * 2007 * @FIF_OTHER_BSS: pass frames destined to other BSSes 2008 * 2009 * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only 2010 * those addressed to this station. 2011 * 2012 * @FIF_PROBE_REQ: pass probe request frames 2013 */ 2014enum ieee80211_filter_flags { 2015 FIF_PROMISC_IN_BSS = 1<<0, 2016 FIF_ALLMULTI = 1<<1, 2017 FIF_FCSFAIL = 1<<2, 2018 FIF_PLCPFAIL = 1<<3, 2019 FIF_BCN_PRBRESP_PROMISC = 1<<4, 2020 FIF_CONTROL = 1<<5, 2021 FIF_OTHER_BSS = 1<<6, 2022 FIF_PSPOLL = 1<<7, 2023 FIF_PROBE_REQ = 1<<8, 2024}; 2025 2026/** 2027 * enum ieee80211_ampdu_mlme_action - A-MPDU actions 2028 * 2029 * These flags are used with the ampdu_action() callback in 2030 * &struct ieee80211_ops to indicate which action is needed. 2031 * 2032 * Note that drivers MUST be able to deal with a TX aggregation 2033 * session being stopped even before they OK'ed starting it by 2034 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer 2035 * might receive the addBA frame and send a delBA right away! 2036 * 2037 * @IEEE80211_AMPDU_RX_START: start RX aggregation 2038 * @IEEE80211_AMPDU_RX_STOP: stop RX aggregation 2039 * @IEEE80211_AMPDU_TX_START: start TX aggregation 2040 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational 2041 * @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting 2042 * queued packets, now unaggregated. After all packets are transmitted the 2043 * driver has to call ieee80211_stop_tx_ba_cb_irqsafe(). 2044 * @IEEE80211_AMPDU_TX_STOP_FLUSH: stop TX aggregation and flush all packets, 2045 * called when the station is removed. There's no need or reason to call 2046 * ieee80211_stop_tx_ba_cb_irqsafe() in this case as mac80211 assumes the 2047 * session is gone and removes the station. 2048 * @IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: called when TX aggregation is stopped 2049 * but the driver hasn't called ieee80211_stop_tx_ba_cb_irqsafe() yet and 2050 * now the connection is dropped and the station will be removed. Drivers 2051 * should clean up and drop remaining packets when this is called. 2052 */ 2053enum ieee80211_ampdu_mlme_action { 2054 IEEE80211_AMPDU_RX_START, 2055 IEEE80211_AMPDU_RX_STOP, 2056 IEEE80211_AMPDU_TX_START, 2057 IEEE80211_AMPDU_TX_STOP_CONT, 2058 IEEE80211_AMPDU_TX_STOP_FLUSH, 2059 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT, 2060 IEEE80211_AMPDU_TX_OPERATIONAL, 2061}; 2062 2063/** 2064 * enum ieee80211_frame_release_type - frame release reason 2065 * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll 2066 * @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to 2067 * frame received on trigger-enabled AC 2068 */ 2069enum ieee80211_frame_release_type { 2070 IEEE80211_FRAME_RELEASE_PSPOLL, 2071 IEEE80211_FRAME_RELEASE_UAPSD, 2072}; 2073 2074/** 2075 * enum ieee80211_rate_control_changed - flags to indicate what changed 2076 * 2077 * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit 2078 * to this station changed. 2079 * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed. 2080 * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer 2081 * changed (in IBSS mode) due to discovering more information about 2082 * the peer. 2083 */ 2084enum ieee80211_rate_control_changed { 2085 IEEE80211_RC_BW_CHANGED = BIT(0), 2086 IEEE80211_RC_SMPS_CHANGED = BIT(1), 2087 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 2088}; 2089 2090/** 2091 * struct ieee80211_ops - callbacks from mac80211 to the driver 2092 * 2093 * This structure contains various callbacks that the driver may 2094 * handle or, in some cases, must handle, for example to configure 2095 * the hardware to a new channel or to transmit a frame. 2096 * 2097 * @tx: Handler that 802.11 module calls for each transmitted frame. 2098 * skb contains the buffer starting from the IEEE 802.11 header. 2099 * The low-level driver should send the frame out based on 2100 * configuration in the TX control data. This handler should, 2101 * preferably, never fail and stop queues appropriately. 2102 * Must be atomic. 2103 * 2104 * @start: Called before the first netdevice attached to the hardware 2105 * is enabled. This should turn on the hardware and must turn on 2106 * frame reception (for possibly enabled monitor interfaces.) 2107 * Returns negative error codes, these may be seen in userspace, 2108 * or zero. 2109 * When the device is started it should not have a MAC address 2110 * to avoid acknowledging frames before a non-monitor device 2111 * is added. 2112 * Must be implemented and can sleep. 2113 * 2114 * @stop: Called after last netdevice attached to the hardware 2115 * is disabled. This should turn off the hardware (at least 2116 * it must turn off frame reception.) 2117 * May be called right after add_interface if that rejects 2118 * an interface. If you added any work onto the mac80211 workqueue 2119 * you should ensure to cancel it on this callback. 2120 * Must be implemented and can sleep. 2121 * 2122 * @suspend: Suspend the device; mac80211 itself will quiesce before and 2123 * stop transmitting and doing any other configuration, and then 2124 * ask the device to suspend. This is only invoked when WoWLAN is 2125 * configured, otherwise the device is deconfigured completely and 2126 * reconfigured at resume time. 2127 * The driver may also impose special conditions under which it 2128 * wants to use the "normal" suspend (deconfigure), say if it only 2129 * supports WoWLAN when the device is associated. In this case, it 2130 * must return 1 from this function. 2131 * 2132 * @resume: If WoWLAN was configured, this indicates that mac80211 is 2133 * now resuming its operation, after this the device must be fully 2134 * functional again. If this returns an error, the only way out is 2135 * to also unregister the device. If it returns 1, then mac80211 2136 * will also go through the regular complete restart on resume. 2137 * 2138 * @set_wakeup: Enable or disable wakeup when WoWLAN configuration is 2139 * modified. The reason is that device_set_wakeup_enable() is 2140 * supposed to be called when the configuration changes, not only 2141 * in suspend(). 2142 * 2143 * @add_interface: Called when a netdevice attached to the hardware is 2144 * enabled. Because it is not called for monitor mode devices, @start 2145 * and @stop must be implemented. 2146 * The driver should perform any initialization it needs before 2147 * the device can be enabled. The initial configuration for the 2148 * interface is given in the conf parameter. 2149 * The callback may refuse to add an interface by returning a 2150 * negative error code (which will be seen in userspace.) 2151 * Must be implemented and can sleep. 2152 * 2153 * @change_interface: Called when a netdevice changes type. This callback 2154 * is optional, but only if it is supported can interface types be 2155 * switched while the interface is UP. The callback may sleep. 2156 * Note that while an interface is being switched, it will not be 2157 * found by the interface iteration callbacks. 2158 * 2159 * @remove_interface: Notifies a driver that an interface is going down. 2160 * The @stop callback is called after this if it is the last interface 2161 * and no monitor interfaces are present. 2162 * When all interfaces are removed, the MAC address in the hardware 2163 * must be cleared so the device no longer acknowledges packets, 2164 * the mac_addr member of the conf structure is, however, set to the 2165 * MAC address of the device going away. 2166 * Hence, this callback must be implemented. It can sleep. 2167 * 2168 * @add_interface_debugfs: Drivers can use this callback to add debugfs files 2169 * when a vif is added to mac80211. This callback and 2170 * @remove_interface_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2171 * conditional. @remove_interface_debugfs must be provided for cleanup. 2172 * This callback can sleep. 2173 * 2174 * @remove_interface_debugfs: Remove the debugfs files which were added using 2175 * @add_interface_debugfs. This callback must remove all debugfs entries 2176 * that were added because mac80211 only removes interface debugfs when the 2177 * interface is destroyed, not when it is removed from the driver. 2178 * This callback can sleep. 2179 * 2180 * @config: Handler for configuration requests. IEEE 802.11 code calls this 2181 * function to change hardware configuration, e.g., channel. 2182 * This function should never fail but returns a negative error code 2183 * if it does. The callback can sleep. 2184 * 2185 * @bss_info_changed: Handler for configuration requests related to BSS 2186 * parameters that may vary during BSS's lifespan, and may affect low 2187 * level driver (e.g. assoc/disassoc status, erp parameters). 2188 * This function should not be used if no BSS has been set, unless 2189 * for association indication. The @changed parameter indicates which 2190 * of the bss parameters has changed when a call is made. The callback 2191 * can sleep. 2192 * 2193 * @prepare_multicast: Prepare for multicast filter configuration. 2194 * This callback is optional, and its return value is passed 2195 * to configure_filter(). This callback must be atomic. 2196 * 2197 * @configure_filter: Configure the device's RX filter. 2198 * See the section "Frame filtering" for more information. 2199 * This callback must be implemented and can sleep. 2200 * 2201 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit 2202 * must be set or cleared for a given STA. Must be atomic. 2203 * 2204 * @set_key: See the section "Hardware crypto acceleration" 2205 * This callback is only called between add_interface and 2206 * remove_interface calls, i.e. while the given virtual interface 2207 * is enabled. 2208 * Returns a negative error code if the key can't be added. 2209 * The callback can sleep. 2210 * 2211 * @update_tkip_key: See the section "Hardware crypto acceleration" 2212 * This callback will be called in the context of Rx. Called for drivers 2213 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. 2214 * The callback must be atomic. 2215 * 2216 * @set_rekey_data: If the device supports GTK rekeying, for example while the 2217 * host is suspended, it can assign this callback to retrieve the data 2218 * necessary to do GTK rekeying, this is the KEK, KCK and replay counter. 2219 * After rekeying was done it should (for example during resume) notify 2220 * userspace of the new replay counter using ieee80211_gtk_rekey_notify(). 2221 * 2222 * @set_default_unicast_key: Set the default (unicast) key index, useful for 2223 * WEP when the device sends data packets autonomously, e.g. for ARP 2224 * offloading. The index can be 0-3, or -1 for unsetting it. 2225 * 2226 * @hw_scan: Ask the hardware to service the scan request, no need to start 2227 * the scan state machine in stack. The scan must honour the channel 2228 * configuration done by the regulatory agent in the wiphy's 2229 * registered bands. The hardware (or the driver) needs to make sure 2230 * that power save is disabled. 2231 * The @req ie/ie_len members are rewritten by mac80211 to contain the 2232 * entire IEs after the SSID, so that drivers need not look at these 2233 * at all but just send them after the SSID -- mac80211 includes the 2234 * (extended) supported rates and HT information (where applicable). 2235 * When the scan finishes, ieee80211_scan_completed() must be called; 2236 * note that it also must be called when the scan cannot finish due to 2237 * any error unless this callback returned a negative error code. 2238 * The callback can sleep. 2239 * 2240 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan. 2241 * The driver should ask the hardware to cancel the scan (if possible), 2242 * but the scan will be completed only after the driver will call 2243 * ieee80211_scan_completed(). 2244 * This callback is needed for wowlan, to prevent enqueueing a new 2245 * scan_work after the low-level driver was already suspended. 2246 * The callback can sleep. 2247 * 2248 * @sched_scan_start: Ask the hardware to start scanning repeatedly at 2249 * specific intervals. The driver must call the 2250 * ieee80211_sched_scan_results() function whenever it finds results. 2251 * This process will continue until sched_scan_stop is called. 2252 * 2253 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan. 2254 * 2255 * @sw_scan_start: Notifier function that is called just before a software scan 2256 * is started. Can be NULL, if the driver doesn't need this notification. 2257 * The callback can sleep. 2258 * 2259 * @sw_scan_complete: Notifier function that is called just after a 2260 * software scan finished. Can be NULL, if the driver doesn't need 2261 * this notification. 2262 * The callback can sleep. 2263 * 2264 * @get_stats: Return low-level statistics. 2265 * Returns zero if statistics are available. 2266 * The callback can sleep. 2267 * 2268 * @get_tkip_seq: If your device implements TKIP encryption in hardware this 2269 * callback should be provided to read the TKIP transmit IVs (both IV32 2270 * and IV16) for the given key from hardware. 2271 * The callback must be atomic. 2272 * 2273 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this 2274 * if the device does fragmentation by itself; if this callback is 2275 * implemented then the stack will not do fragmentation. 2276 * The callback can sleep. 2277 * 2278 * @set_rts_threshold: Configuration of RTS threshold (if device needs it) 2279 * The callback can sleep. 2280 * 2281 * @sta_add: Notifies low level driver about addition of an associated station, 2282 * AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2283 * 2284 * @sta_remove: Notifies low level driver about removal of an associated 2285 * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2286 * 2287 * @sta_add_debugfs: Drivers can use this callback to add debugfs files 2288 * when a station is added to mac80211's station list. This callback 2289 * and @sta_remove_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2290 * conditional. This callback can sleep. 2291 * 2292 * @sta_remove_debugfs: Remove the debugfs files which were added using 2293 * @sta_add_debugfs. This callback can sleep. 2294 * 2295 * @sta_notify: Notifies low level driver about power state transition of an 2296 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating 2297 * in AP mode, this callback will not be called when the flag 2298 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. 2299 * 2300 * @sta_state: Notifies low level driver about state transition of a 2301 * station (which can be the AP, a client, IBSS/WDS/mesh peer etc.) 2302 * This callback is mutually exclusive with @sta_add/@sta_remove. 2303 * It must not fail for down transitions but may fail for transitions 2304 * up the list of states. 2305 * The callback can sleep. 2306 * 2307 * @sta_rc_update: Notifies the driver of changes to the bitrates that can be 2308 * used to transmit to the station. The changes are advertised with bits 2309 * from &enum ieee80211_rate_control_changed and the values are reflected 2310 * in the station data. This callback should only be used when the driver 2311 * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since 2312 * otherwise the rate control algorithm is notified directly. 2313 * Must be atomic. 2314 * 2315 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), 2316 * bursting) for a hardware TX queue. 2317 * Returns a negative error code on failure. 2318 * The callback can sleep. 2319 * 2320 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, 2321 * this is only used for IBSS mode BSSID merging and debugging. Is not a 2322 * required function. 2323 * The callback can sleep. 2324 * 2325 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. 2326 * Currently, this is only used for IBSS mode debugging. Is not a 2327 * required function. 2328 * The callback can sleep. 2329 * 2330 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize 2331 * with other STAs in the IBSS. This is only used in IBSS mode. This 2332 * function is optional if the firmware/hardware takes full care of 2333 * TSF synchronization. 2334 * The callback can sleep. 2335 * 2336 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. 2337 * This is needed only for IBSS mode and the result of this function is 2338 * used to determine whether to reply to Probe Requests. 2339 * Returns non-zero if this device sent the last beacon. 2340 * The callback can sleep. 2341 * 2342 * @ampdu_action: Perform a certain A-MPDU action 2343 * The RA/TID combination determines the destination and TID we want 2344 * the ampdu action to be performed for. The action is defined through 2345 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) 2346 * is the first frame we expect to perform the action on. Notice 2347 * that TX/RX_STOP can pass NULL for this parameter. 2348 * The @buf_size parameter is only valid when the action is set to 2349 * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder 2350 * buffer size (number of subframes) for this session -- the driver 2351 * may neither send aggregates containing more subframes than this 2352 * nor send aggregates in a way that lost frames would exceed the 2353 * buffer size. If just limiting the aggregate size, this would be 2354 * possible with a buf_size of 8: 2355 * - TX: 1.....7 2356 * - RX: 2....7 (lost frame #1) 2357 * - TX: 8..1... 2358 * which is invalid since #1 was now re-transmitted well past the 2359 * buffer size of 8. Correct ways to retransmit #1 would be: 2360 * - TX: 1 or 18 or 81 2361 * Even "189" would be wrong since 1 could be lost again. 2362 * 2363 * Returns a negative error code on failure. 2364 * The callback can sleep. 2365 * 2366 * @get_survey: Return per-channel survey information 2367 * 2368 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also 2369 * need to set wiphy->rfkill_poll to %true before registration, 2370 * and need to call wiphy_rfkill_set_hw_state() in the callback. 2371 * The callback can sleep. 2372 * 2373 * @set_coverage_class: Set slot time for given coverage class as specified 2374 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout 2375 * accordingly. This callback is not required and may sleep. 2376 * 2377 * @testmode_cmd: Implement a cfg80211 test mode command. 2378 * The callback can sleep. 2379 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep. 2380 * 2381 * @flush: Flush all pending frames from the hardware queue, making sure 2382 * that the hardware queues are empty. If the parameter @drop is set 2383 * to %true, pending frames may be dropped. The callback can sleep. 2384 * 2385 * @channel_switch: Drivers that need (or want) to offload the channel 2386 * switch operation for CSAs received from the AP may implement this 2387 * callback. They must then call ieee80211_chswitch_done() to indicate 2388 * completion of the channel switch. 2389 * 2390 * @napi_poll: Poll Rx queue for incoming data frames. 2391 * 2392 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2393 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2394 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2395 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2396 * 2397 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2398 * 2399 * @remain_on_channel: Starts an off-channel period on the given channel, must 2400 * call back to ieee80211_ready_on_channel() when on that channel. Note 2401 * that normal channel traffic is not stopped as this is intended for hw 2402 * offload. Frames to transmit on the off-channel channel are transmitted 2403 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the 2404 * duration (which will always be non-zero) expires, the driver must call 2405 * ieee80211_remain_on_channel_expired(). 2406 * Note that this callback may be called while the device is in IDLE and 2407 * must be accepted in this case. 2408 * This callback may sleep. 2409 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is 2410 * aborted before it expires. This callback may sleep. 2411 * 2412 * @set_ringparam: Set tx and rx ring sizes. 2413 * 2414 * @get_ringparam: Get tx and rx ring current and maximum sizes. 2415 * 2416 * @tx_frames_pending: Check if there is any pending frame in the hardware 2417 * queues before entering power save. 2418 * 2419 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection 2420 * when transmitting a frame. Currently only legacy rates are handled. 2421 * The callback can sleep. 2422 * @rssi_callback: Notify driver when the average RSSI goes above/below 2423 * thresholds that were registered previously. The callback can sleep. 2424 * 2425 * @release_buffered_frames: Release buffered frames according to the given 2426 * parameters. In the case where the driver buffers some frames for 2427 * sleeping stations mac80211 will use this callback to tell the driver 2428 * to release some frames, either for PS-poll or uAPSD. 2429 * Note that if the @more_data paramter is %false the driver must check 2430 * if there are more frames on the given TIDs, and if there are more than 2431 * the frames being released then it must still set the more-data bit in 2432 * the frame. If the @more_data parameter is %true, then of course the 2433 * more-data bit must always be set. 2434 * The @tids parameter tells the driver which TIDs to release frames 2435 * from, for PS-poll it will always have only a single bit set. 2436 * In the case this is used for a PS-poll initiated release, the 2437 * @num_frames parameter will always be 1 so code can be shared. In 2438 * this case the driver must also set %IEEE80211_TX_STATUS_EOSP flag 2439 * on the TX status (and must report TX status) so that the PS-poll 2440 * period is properly ended. This is used to avoid sending multiple 2441 * responses for a retried PS-poll frame. 2442 * In the case this is used for uAPSD, the @num_frames parameter may be 2443 * bigger than one, but the driver may send fewer frames (it must send 2444 * at least one, however). In this case it is also responsible for 2445 * setting the EOSP flag in the QoS header of the frames. Also, when the 2446 * service period ends, the driver must set %IEEE80211_TX_STATUS_EOSP 2447 * on the last frame in the SP. Alternatively, it may call the function 2448 * ieee80211_sta_eosp_irqsafe() to inform mac80211 of the end of the SP. 2449 * This callback must be atomic. 2450 * @allow_buffered_frames: Prepare device to allow the given number of frames 2451 * to go out to the given station. The frames will be sent by mac80211 2452 * via the usual TX path after this call. The TX information for frames 2453 * released will also have the %IEEE80211_TX_CTL_NO_PS_BUFFER flag set 2454 * and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case 2455 * frames from multiple TIDs are released and the driver might reorder 2456 * them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag 2457 * on the last frame and clear it on all others and also handle the EOSP 2458 * bit in the QoS header correctly. Alternatively, it can also call the 2459 * ieee80211_sta_eosp_irqsafe() function. 2460 * The @tids parameter is a bitmap and tells the driver which TIDs the 2461 * frames will be on; it will at most have two bits set. 2462 * This callback must be atomic. 2463 * 2464 * @get_et_sset_count: Ethtool API to get string-set count. 2465 * 2466 * @get_et_stats: Ethtool API to get a set of u64 stats. 2467 * 2468 * @get_et_strings: Ethtool API to get a set of strings to describe stats 2469 * and perhaps other supported types of ethtool data-sets. 2470 * 2471 * @get_rssi: Get current signal strength in dBm, the function is optional 2472 * and can sleep. 2473 * 2474 * @mgd_prepare_tx: Prepare for transmitting a management frame for association 2475 * before associated. In multi-channel scenarios, a virtual interface is 2476 * bound to a channel before it is associated, but as it isn't associated 2477 * yet it need not necessarily be given airtime, in particular since any 2478 * transmission to a P2P GO needs to be synchronized against the GO's 2479 * powersave state. mac80211 will call this function before transmitting a 2480 * management frame prior to having successfully associated to allow the 2481 * driver to give it channel time for the transmission, to get a response 2482 * and to be able to synchronize with the GO. 2483 * The callback will be called before each transmission and upon return 2484 * mac80211 will transmit the frame right away. 2485 * The callback is optional and can (should!) sleep. 2486 * 2487 * @add_chanctx: Notifies device driver about new channel context creation. 2488 * @remove_chanctx: Notifies device driver about channel context destruction. 2489 * @change_chanctx: Notifies device driver about channel context changes that 2490 * may happen when combining different virtual interfaces on the same 2491 * channel context with different settings 2492 * @assign_vif_chanctx: Notifies device driver about channel context being bound 2493 * to vif. Possible use is for hw queue remapping. 2494 * @unassign_vif_chanctx: Notifies device driver about channel context being 2495 * unbound from vif. 2496 * @start_ap: Start operation on the AP interface, this is called after all the 2497 * information in bss_conf is set and beacon can be retrieved. A channel 2498 * context is bound before this is called. Note that if the driver uses 2499 * software scan or ROC, this (and @stop_ap) isn't called when the AP is 2500 * just "paused" for scanning/ROC, which is indicated by the beacon being 2501 * disabled/enabled via @bss_info_changed. 2502 * @stop_ap: Stop operation on the AP interface. 2503 * 2504 * @restart_complete: Called after a call to ieee80211_restart_hw(), when the 2505 * reconfiguration has completed. This can help the driver implement the 2506 * reconfiguration step. Also called when reconfiguring because the 2507 * driver's resume function returned 1, as this is just like an "inline" 2508 * hardware restart. This callback may sleep. 2509 * 2510 * @ipv6_addr_change: IPv6 address assignment on the given interface changed. 2511 * Currently, this is only called for managed or P2P client interfaces. 2512 * This callback is optional; it must not sleep. 2513 */ 2514struct ieee80211_ops { 2515 void (*tx)(struct ieee80211_hw *hw, 2516 struct ieee80211_tx_control *control, 2517 struct sk_buff *skb); 2518 int (*start)(struct ieee80211_hw *hw); 2519 void (*stop)(struct ieee80211_hw *hw); 2520#ifdef CONFIG_PM 2521 int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan); 2522 int (*resume)(struct ieee80211_hw *hw); 2523 void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled); 2524#endif 2525 int (*add_interface)(struct ieee80211_hw *hw, 2526 struct ieee80211_vif *vif); 2527 int (*change_interface)(struct ieee80211_hw *hw, 2528 struct ieee80211_vif *vif, 2529 enum nl80211_iftype new_type, bool p2p); 2530 void (*remove_interface)(struct ieee80211_hw *hw, 2531 struct ieee80211_vif *vif); 2532 int (*config)(struct ieee80211_hw *hw, u32 changed); 2533 void (*bss_info_changed)(struct ieee80211_hw *hw, 2534 struct ieee80211_vif *vif, 2535 struct ieee80211_bss_conf *info, 2536 u32 changed); 2537 2538 int (*start_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2539 void (*stop_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2540 2541 u64 (*prepare_multicast)(struct ieee80211_hw *hw, 2542 struct netdev_hw_addr_list *mc_list); 2543 void (*configure_filter)(struct ieee80211_hw *hw, 2544 unsigned int changed_flags, 2545 unsigned int *total_flags, 2546 u64 multicast); 2547 int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 2548 bool set); 2549 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2550 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2551 struct ieee80211_key_conf *key); 2552 void (*update_tkip_key)(struct ieee80211_hw *hw, 2553 struct ieee80211_vif *vif, 2554 struct ieee80211_key_conf *conf, 2555 struct ieee80211_sta *sta, 2556 u32 iv32, u16 *phase1key); 2557 void (*set_rekey_data)(struct ieee80211_hw *hw, 2558 struct ieee80211_vif *vif, 2559 struct cfg80211_gtk_rekey_data *data); 2560 void (*set_default_unicast_key)(struct ieee80211_hw *hw, 2561 struct ieee80211_vif *vif, int idx); 2562 int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2563 struct cfg80211_scan_request *req); 2564 void (*cancel_hw_scan)(struct ieee80211_hw *hw, 2565 struct ieee80211_vif *vif); 2566 int (*sched_scan_start)(struct ieee80211_hw *hw, 2567 struct ieee80211_vif *vif, 2568 struct cfg80211_sched_scan_request *req, 2569 struct ieee80211_sched_scan_ies *ies); 2570 void (*sched_scan_stop)(struct ieee80211_hw *hw, 2571 struct ieee80211_vif *vif); 2572 void (*sw_scan_start)(struct ieee80211_hw *hw); 2573 void (*sw_scan_complete)(struct ieee80211_hw *hw); 2574 int (*get_stats)(struct ieee80211_hw *hw, 2575 struct ieee80211_low_level_stats *stats); 2576 void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, 2577 u32 *iv32, u16 *iv16); 2578 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); 2579 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); 2580 int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2581 struct ieee80211_sta *sta); 2582 int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2583 struct ieee80211_sta *sta); 2584#ifdef CONFIG_MAC80211_DEBUGFS 2585 void (*sta_add_debugfs)(struct ieee80211_hw *hw, 2586 struct ieee80211_vif *vif, 2587 struct ieee80211_sta *sta, 2588 struct dentry *dir); 2589 void (*sta_remove_debugfs)(struct ieee80211_hw *hw, 2590 struct ieee80211_vif *vif, 2591 struct ieee80211_sta *sta, 2592 struct dentry *dir); 2593 void (*add_interface_debugfs)(struct ieee80211_hw *hw, 2594 struct ieee80211_vif *vif, 2595 struct dentry *dir); 2596 void (*remove_interface_debugfs)(struct ieee80211_hw *hw, 2597 struct ieee80211_vif *vif, 2598 struct dentry *dir); 2599#endif 2600 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2601 enum sta_notify_cmd, struct ieee80211_sta *sta); 2602 int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2603 struct ieee80211_sta *sta, 2604 enum ieee80211_sta_state old_state, 2605 enum ieee80211_sta_state new_state); 2606 void (*sta_rc_update)(struct ieee80211_hw *hw, 2607 struct ieee80211_vif *vif, 2608 struct ieee80211_sta *sta, 2609 u32 changed); 2610 int (*conf_tx)(struct ieee80211_hw *hw, 2611 struct ieee80211_vif *vif, u16 ac, 2612 const struct ieee80211_tx_queue_params *params); 2613 u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2614 void (*set_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2615 u64 tsf); 2616 void (*reset_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2617 int (*tx_last_beacon)(struct ieee80211_hw *hw); 2618 int (*ampdu_action)(struct ieee80211_hw *hw, 2619 struct ieee80211_vif *vif, 2620 enum ieee80211_ampdu_mlme_action action, 2621 struct ieee80211_sta *sta, u16 tid, u16 *ssn, 2622 u8 buf_size); 2623 int (*get_survey)(struct ieee80211_hw *hw, int idx, 2624 struct survey_info *survey); 2625 void (*rfkill_poll)(struct ieee80211_hw *hw); 2626 void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); 2627#ifdef CONFIG_NL80211_TESTMODE 2628 int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); 2629 int (*testmode_dump)(struct ieee80211_hw *hw, struct sk_buff *skb, 2630 struct netlink_callback *cb, 2631 void *data, int len); 2632#endif 2633 void (*flush)(struct ieee80211_hw *hw, bool drop); 2634 void (*channel_switch)(struct ieee80211_hw *hw, 2635 struct ieee80211_channel_switch *ch_switch); 2636 int (*napi_poll)(struct ieee80211_hw *hw, int budget); 2637 int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); 2638 int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); 2639 2640 int (*remain_on_channel)(struct ieee80211_hw *hw, 2641 struct ieee80211_vif *vif, 2642 struct ieee80211_channel *chan, 2643 int duration); 2644 int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); 2645 int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); 2646 void (*get_ringparam)(struct ieee80211_hw *hw, 2647 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 2648 bool (*tx_frames_pending)(struct ieee80211_hw *hw); 2649 int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2650 const struct cfg80211_bitrate_mask *mask); 2651 void (*rssi_callback)(struct ieee80211_hw *hw, 2652 struct ieee80211_vif *vif, 2653 enum ieee80211_rssi_event rssi_event); 2654 2655 void (*allow_buffered_frames)(struct ieee80211_hw *hw, 2656 struct ieee80211_sta *sta, 2657 u16 tids, int num_frames, 2658 enum ieee80211_frame_release_type reason, 2659 bool more_data); 2660 void (*release_buffered_frames)(struct ieee80211_hw *hw, 2661 struct ieee80211_sta *sta, 2662 u16 tids, int num_frames, 2663 enum ieee80211_frame_release_type reason, 2664 bool more_data); 2665 2666 int (*get_et_sset_count)(struct ieee80211_hw *hw, 2667 struct ieee80211_vif *vif, int sset); 2668 void (*get_et_stats)(struct ieee80211_hw *hw, 2669 struct ieee80211_vif *vif, 2670 struct ethtool_stats *stats, u64 *data); 2671 void (*get_et_strings)(struct ieee80211_hw *hw, 2672 struct ieee80211_vif *vif, 2673 u32 sset, u8 *data); 2674 int (*get_rssi)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2675 struct ieee80211_sta *sta, s8 *rssi_dbm); 2676 2677 void (*mgd_prepare_tx)(struct ieee80211_hw *hw, 2678 struct ieee80211_vif *vif); 2679 2680 int (*add_chanctx)(struct ieee80211_hw *hw, 2681 struct ieee80211_chanctx_conf *ctx); 2682 void (*remove_chanctx)(struct ieee80211_hw *hw, 2683 struct ieee80211_chanctx_conf *ctx); 2684 void (*change_chanctx)(struct ieee80211_hw *hw, 2685 struct ieee80211_chanctx_conf *ctx, 2686 u32 changed); 2687 int (*assign_vif_chanctx)(struct ieee80211_hw *hw, 2688 struct ieee80211_vif *vif, 2689 struct ieee80211_chanctx_conf *ctx); 2690 void (*unassign_vif_chanctx)(struct ieee80211_hw *hw, 2691 struct ieee80211_vif *vif, 2692 struct ieee80211_chanctx_conf *ctx); 2693 2694 void (*restart_complete)(struct ieee80211_hw *hw); 2695 2696#if IS_ENABLED(CONFIG_IPV6) 2697 void (*ipv6_addr_change)(struct ieee80211_hw *hw, 2698 struct ieee80211_vif *vif, 2699 struct inet6_dev *idev); 2700#endif 2701}; 2702 2703/** 2704 * ieee80211_alloc_hw - Allocate a new hardware device 2705 * 2706 * This must be called once for each hardware device. The returned pointer 2707 * must be used to refer to this device when calling other functions. 2708 * mac80211 allocates a private data area for the driver pointed to by 2709 * @priv in &struct ieee80211_hw, the size of this area is given as 2710 * @priv_data_len. 2711 * 2712 * @priv_data_len: length of private data 2713 * @ops: callbacks for this device 2714 * 2715 * Return: A pointer to the new hardware device, or %NULL on error. 2716 */ 2717struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, 2718 const struct ieee80211_ops *ops); 2719 2720/** 2721 * ieee80211_register_hw - Register hardware device 2722 * 2723 * You must call this function before any other functions in 2724 * mac80211. Note that before a hardware can be registered, you 2725 * need to fill the contained wiphy's information. 2726 * 2727 * @hw: the device to register as returned by ieee80211_alloc_hw() 2728 * 2729 * Return: 0 on success. An error code otherwise. 2730 */ 2731int ieee80211_register_hw(struct ieee80211_hw *hw); 2732 2733/** 2734 * struct ieee80211_tpt_blink - throughput blink description 2735 * @throughput: throughput in Kbit/sec 2736 * @blink_time: blink time in milliseconds 2737 * (full cycle, ie. one off + one on period) 2738 */ 2739struct ieee80211_tpt_blink { 2740 int throughput; 2741 int blink_time; 2742}; 2743 2744/** 2745 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags 2746 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio 2747 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working 2748 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one 2749 * interface is connected in some way, including being an AP 2750 */ 2751enum ieee80211_tpt_led_trigger_flags { 2752 IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), 2753 IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), 2754 IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), 2755}; 2756 2757#ifdef CONFIG_MAC80211_LEDS 2758extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); 2759extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); 2760extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); 2761extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); 2762extern char *__ieee80211_create_tpt_led_trigger( 2763 struct ieee80211_hw *hw, unsigned int flags, 2764 const struct ieee80211_tpt_blink *blink_table, 2765 unsigned int blink_table_len); 2766#endif 2767/** 2768 * ieee80211_get_tx_led_name - get name of TX LED 2769 * 2770 * mac80211 creates a transmit LED trigger for each wireless hardware 2771 * that can be used to drive LEDs if your driver registers a LED device. 2772 * This function returns the name (or %NULL if not configured for LEDs) 2773 * of the trigger so you can automatically link the LED device. 2774 * 2775 * @hw: the hardware to get the LED trigger name for 2776 * 2777 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2778 */ 2779static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) 2780{ 2781#ifdef CONFIG_MAC80211_LEDS 2782 return __ieee80211_get_tx_led_name(hw); 2783#else 2784 return NULL; 2785#endif 2786} 2787 2788/** 2789 * ieee80211_get_rx_led_name - get name of RX LED 2790 * 2791 * mac80211 creates a receive LED trigger for each wireless hardware 2792 * that can be used to drive LEDs if your driver registers a LED device. 2793 * This function returns the name (or %NULL if not configured for LEDs) 2794 * of the trigger so you can automatically link the LED device. 2795 * 2796 * @hw: the hardware to get the LED trigger name for 2797 * 2798 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2799 */ 2800static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) 2801{ 2802#ifdef CONFIG_MAC80211_LEDS 2803 return __ieee80211_get_rx_led_name(hw); 2804#else 2805 return NULL; 2806#endif 2807} 2808 2809/** 2810 * ieee80211_get_assoc_led_name - get name of association LED 2811 * 2812 * mac80211 creates a association LED trigger for each wireless hardware 2813 * that can be used to drive LEDs if your driver registers a LED device. 2814 * This function returns the name (or %NULL if not configured for LEDs) 2815 * of the trigger so you can automatically link the LED device. 2816 * 2817 * @hw: the hardware to get the LED trigger name for 2818 * 2819 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2820 */ 2821static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) 2822{ 2823#ifdef CONFIG_MAC80211_LEDS 2824 return __ieee80211_get_assoc_led_name(hw); 2825#else 2826 return NULL; 2827#endif 2828} 2829 2830/** 2831 * ieee80211_get_radio_led_name - get name of radio LED 2832 * 2833 * mac80211 creates a radio change LED trigger for each wireless hardware 2834 * that can be used to drive LEDs if your driver registers a LED device. 2835 * This function returns the name (or %NULL if not configured for LEDs) 2836 * of the trigger so you can automatically link the LED device. 2837 * 2838 * @hw: the hardware to get the LED trigger name for 2839 * 2840 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2841 */ 2842static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) 2843{ 2844#ifdef CONFIG_MAC80211_LEDS 2845 return __ieee80211_get_radio_led_name(hw); 2846#else 2847 return NULL; 2848#endif 2849} 2850 2851/** 2852 * ieee80211_create_tpt_led_trigger - create throughput LED trigger 2853 * @hw: the hardware to create the trigger for 2854 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags 2855 * @blink_table: the blink table -- needs to be ordered by throughput 2856 * @blink_table_len: size of the blink table 2857 * 2858 * Return: %NULL (in case of error, or if no LED triggers are 2859 * configured) or the name of the new trigger. 2860 * 2861 * Note: This function must be called before ieee80211_register_hw(). 2862 */ 2863static inline char * 2864ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, 2865 const struct ieee80211_tpt_blink *blink_table, 2866 unsigned int blink_table_len) 2867{ 2868#ifdef CONFIG_MAC80211_LEDS 2869 return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, 2870 blink_table_len); 2871#else 2872 return NULL; 2873#endif 2874} 2875 2876/** 2877 * ieee80211_unregister_hw - Unregister a hardware device 2878 * 2879 * This function instructs mac80211 to free allocated resources 2880 * and unregister netdevices from the networking subsystem. 2881 * 2882 * @hw: the hardware to unregister 2883 */ 2884void ieee80211_unregister_hw(struct ieee80211_hw *hw); 2885 2886/** 2887 * ieee80211_free_hw - free hardware descriptor 2888 * 2889 * This function frees everything that was allocated, including the 2890 * private data for the driver. You must call ieee80211_unregister_hw() 2891 * before calling this function. 2892 * 2893 * @hw: the hardware to free 2894 */ 2895void ieee80211_free_hw(struct ieee80211_hw *hw); 2896 2897/** 2898 * ieee80211_restart_hw - restart hardware completely 2899 * 2900 * Call this function when the hardware was restarted for some reason 2901 * (hardware error, ...) and the driver is unable to restore its state 2902 * by itself. mac80211 assumes that at this point the driver/hardware 2903 * is completely uninitialised and stopped, it starts the process by 2904 * calling the ->start() operation. The driver will need to reset all 2905 * internal state that it has prior to calling this function. 2906 * 2907 * @hw: the hardware to restart 2908 */ 2909void ieee80211_restart_hw(struct ieee80211_hw *hw); 2910 2911/** ieee80211_napi_schedule - schedule NAPI poll 2912 * 2913 * Use this function to schedule NAPI polling on a device. 2914 * 2915 * @hw: the hardware to start polling 2916 */ 2917void ieee80211_napi_schedule(struct ieee80211_hw *hw); 2918 2919/** ieee80211_napi_complete - complete NAPI polling 2920 * 2921 * Use this function to finish NAPI polling on a device. 2922 * 2923 * @hw: the hardware to stop polling 2924 */ 2925void ieee80211_napi_complete(struct ieee80211_hw *hw); 2926 2927/** 2928 * ieee80211_rx - receive frame 2929 * 2930 * Use this function to hand received frames to mac80211. The receive 2931 * buffer in @skb must start with an IEEE 802.11 header. In case of a 2932 * paged @skb is used, the driver is recommended to put the ieee80211 2933 * header of the frame on the linear part of the @skb to avoid memory 2934 * allocation and/or memcpy by the stack. 2935 * 2936 * This function may not be called in IRQ context. Calls to this function 2937 * for a single hardware must be synchronized against each other. Calls to 2938 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 2939 * mixed for a single hardware. 2940 * 2941 * In process context use instead ieee80211_rx_ni(). 2942 * 2943 * @hw: the hardware this frame came in on 2944 * @skb: the buffer to receive, owned by mac80211 after this call 2945 */ 2946void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); 2947 2948/** 2949 * ieee80211_rx_irqsafe - receive frame 2950 * 2951 * Like ieee80211_rx() but can be called in IRQ context 2952 * (internally defers to a tasklet.) 2953 * 2954 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not 2955 * be mixed for a single hardware. 2956 * 2957 * @hw: the hardware this frame came in on 2958 * @skb: the buffer to receive, owned by mac80211 after this call 2959 */ 2960void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); 2961 2962/** 2963 * ieee80211_rx_ni - receive frame (in process context) 2964 * 2965 * Like ieee80211_rx() but can be called in process context 2966 * (internally disables bottom halves). 2967 * 2968 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may 2969 * not be mixed for a single hardware. 2970 * 2971 * @hw: the hardware this frame came in on 2972 * @skb: the buffer to receive, owned by mac80211 after this call 2973 */ 2974static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, 2975 struct sk_buff *skb) 2976{ 2977 local_bh_disable(); 2978 ieee80211_rx(hw, skb); 2979 local_bh_enable(); 2980} 2981 2982/** 2983 * ieee80211_sta_ps_transition - PS transition for connected sta 2984 * 2985 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS 2986 * flag set, use this function to inform mac80211 about a connected station 2987 * entering/leaving PS mode. 2988 * 2989 * This function may not be called in IRQ context or with softirqs enabled. 2990 * 2991 * Calls to this function for a single hardware must be synchronized against 2992 * each other. 2993 * 2994 * @sta: currently connected sta 2995 * @start: start or stop PS 2996 * 2997 * Return: 0 on success. -EINVAL when the requested PS mode is already set. 2998 */ 2999int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); 3000 3001/** 3002 * ieee80211_sta_ps_transition_ni - PS transition for connected sta 3003 * (in process context) 3004 * 3005 * Like ieee80211_sta_ps_transition() but can be called in process context 3006 * (internally disables bottom halves). Concurrent call restriction still 3007 * applies. 3008 * 3009 * @sta: currently connected sta 3010 * @start: start or stop PS 3011 * 3012 * Return: Like ieee80211_sta_ps_transition(). 3013 */ 3014static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, 3015 bool start) 3016{ 3017 int ret; 3018 3019 local_bh_disable(); 3020 ret = ieee80211_sta_ps_transition(sta, start); 3021 local_bh_enable(); 3022 3023 return ret; 3024} 3025 3026/* 3027 * The TX headroom reserved by mac80211 for its own tx_status functions. 3028 * This is enough for the radiotap header. 3029 */ 3030#define IEEE80211_TX_STATUS_HEADROOM 14 3031 3032/** 3033 * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames 3034 * @sta: &struct ieee80211_sta pointer for the sleeping station 3035 * @tid: the TID that has buffered frames 3036 * @buffered: indicates whether or not frames are buffered for this TID 3037 * 3038 * If a driver buffers frames for a powersave station instead of passing 3039 * them back to mac80211 for retransmission, the station may still need 3040 * to be told that there are buffered frames via the TIM bit. 3041 * 3042 * This function informs mac80211 whether or not there are frames that are 3043 * buffered in the driver for a given TID; mac80211 can then use this data 3044 * to set the TIM bit (NOTE: This may call back into the driver's set_tim 3045 * call! Beware of the locking!) 3046 * 3047 * If all frames are released to the station (due to PS-poll or uAPSD) 3048 * then the driver needs to inform mac80211 that there no longer are 3049 * frames buffered. However, when the station wakes up mac80211 assumes 3050 * that all buffered frames will be transmitted and clears this data, 3051 * drivers need to make sure they inform mac80211 about all buffered 3052 * frames on the sleep transition (sta_notify() with %STA_NOTIFY_SLEEP). 3053 * 3054 * Note that technically mac80211 only needs to know this per AC, not per 3055 * TID, but since driver buffering will inevitably happen per TID (since 3056 * it is related to aggregation) it is easier to make mac80211 map the 3057 * TID to the AC as required instead of keeping track in all drivers that 3058 * use this API. 3059 */ 3060void ieee80211_sta_set_buffered(struct ieee80211_sta *sta, 3061 u8 tid, bool buffered); 3062 3063/** 3064 * ieee80211_tx_status - transmit status callback 3065 * 3066 * Call this function for all transmitted frames after they have been 3067 * transmitted. It is permissible to not call this function for 3068 * multicast frames but this can affect statistics. 3069 * 3070 * This function may not be called in IRQ context. Calls to this function 3071 * for a single hardware must be synchronized against each other. Calls 3072 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() 3073 * may not be mixed for a single hardware. 3074 * 3075 * @hw: the hardware the frame was transmitted by 3076 * @skb: the frame that was transmitted, owned by mac80211 after this call 3077 */ 3078void ieee80211_tx_status(struct ieee80211_hw *hw, 3079 struct sk_buff *skb); 3080 3081/** 3082 * ieee80211_tx_status_ni - transmit status callback (in process context) 3083 * 3084 * Like ieee80211_tx_status() but can be called in process context. 3085 * 3086 * Calls to this function, ieee80211_tx_status() and 3087 * ieee80211_tx_status_irqsafe() may not be mixed 3088 * for a single hardware. 3089 * 3090 * @hw: the hardware the frame was transmitted by 3091 * @skb: the frame that was transmitted, owned by mac80211 after this call 3092 */ 3093static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, 3094 struct sk_buff *skb) 3095{ 3096 local_bh_disable(); 3097 ieee80211_tx_status(hw, skb); 3098 local_bh_enable(); 3099} 3100 3101/** 3102 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback 3103 * 3104 * Like ieee80211_tx_status() but can be called in IRQ context 3105 * (internally defers to a tasklet.) 3106 * 3107 * Calls to this function, ieee80211_tx_status() and 3108 * ieee80211_tx_status_ni() may not be mixed for a single hardware. 3109 * 3110 * @hw: the hardware the frame was transmitted by 3111 * @skb: the frame that was transmitted, owned by mac80211 after this call 3112 */ 3113void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, 3114 struct sk_buff *skb); 3115 3116/** 3117 * ieee80211_report_low_ack - report non-responding station 3118 * 3119 * When operating in AP-mode, call this function to report a non-responding 3120 * connected STA. 3121 * 3122 * @sta: the non-responding connected sta 3123 * @num_packets: number of packets sent to @sta without a response 3124 */ 3125void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets); 3126 3127/** 3128 * ieee80211_beacon_get_tim - beacon generation function 3129 * @hw: pointer obtained from ieee80211_alloc_hw(). 3130 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3131 * @tim_offset: pointer to variable that will receive the TIM IE offset. 3132 * Set to 0 if invalid (in non-AP modes). 3133 * @tim_length: pointer to variable that will receive the TIM IE length, 3134 * (including the ID and length bytes!). 3135 * Set to 0 if invalid (in non-AP modes). 3136 * 3137 * If the driver implements beaconing modes, it must use this function to 3138 * obtain the beacon frame/template. 3139 * 3140 * If the beacon frames are generated by the host system (i.e., not in 3141 * hardware/firmware), the driver uses this function to get each beacon 3142 * frame from mac80211 -- it is responsible for calling this function 3143 * before the beacon is needed (e.g. based on hardware interrupt). 3144 * 3145 * If the beacon frames are generated by the device, then the driver 3146 * must use the returned beacon as the template and change the TIM IE 3147 * according to the current DTIM parameters/TIM bitmap. 3148 * 3149 * The driver is responsible for freeing the returned skb. 3150 * 3151 * Return: The beacon template. %NULL on error. 3152 */ 3153struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 3154 struct ieee80211_vif *vif, 3155 u16 *tim_offset, u16 *tim_length); 3156 3157/** 3158 * ieee80211_beacon_get - beacon generation function 3159 * @hw: pointer obtained from ieee80211_alloc_hw(). 3160 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3161 * 3162 * See ieee80211_beacon_get_tim(). 3163 * 3164 * Return: See ieee80211_beacon_get_tim(). 3165 */ 3166static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, 3167 struct ieee80211_vif *vif) 3168{ 3169 return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); 3170} 3171 3172/** 3173 * ieee80211_proberesp_get - retrieve a Probe Response template 3174 * @hw: pointer obtained from ieee80211_alloc_hw(). 3175 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3176 * 3177 * Creates a Probe Response template which can, for example, be uploaded to 3178 * hardware. The destination address should be set by the caller. 3179 * 3180 * Can only be called in AP mode. 3181 * 3182 * Return: The Probe Response template. %NULL on error. 3183 */ 3184struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw, 3185 struct ieee80211_vif *vif); 3186 3187/** 3188 * ieee80211_pspoll_get - retrieve a PS Poll template 3189 * @hw: pointer obtained from ieee80211_alloc_hw(). 3190 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3191 * 3192 * Creates a PS Poll a template which can, for example, uploaded to 3193 * hardware. The template must be updated after association so that correct 3194 * AID, BSSID and MAC address is used. 3195 * 3196 * Note: Caller (or hardware) is responsible for setting the 3197 * &IEEE80211_FCTL_PM bit. 3198 * 3199 * Return: The PS Poll template. %NULL on error. 3200 */ 3201struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, 3202 struct ieee80211_vif *vif); 3203 3204/** 3205 * ieee80211_nullfunc_get - retrieve a nullfunc template 3206 * @hw: pointer obtained from ieee80211_alloc_hw(). 3207 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3208 * 3209 * Creates a Nullfunc template which can, for example, uploaded to 3210 * hardware. The template must be updated after association so that correct 3211 * BSSID and address is used. 3212 * 3213 * Note: Caller (or hardware) is responsible for setting the 3214 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. 3215 * 3216 * Return: The nullfunc template. %NULL on error. 3217 */ 3218struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, 3219 struct ieee80211_vif *vif); 3220 3221/** 3222 * ieee80211_probereq_get - retrieve a Probe Request template 3223 * @hw: pointer obtained from ieee80211_alloc_hw(). 3224 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3225 * @ssid: SSID buffer 3226 * @ssid_len: length of SSID 3227 * @tailroom: tailroom to reserve at end of SKB for IEs 3228 * 3229 * Creates a Probe Request template which can, for example, be uploaded to 3230 * hardware. 3231 * 3232 * Return: The Probe Request template. %NULL on error. 3233 */ 3234struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, 3235 struct ieee80211_vif *vif, 3236 const u8 *ssid, size_t ssid_len, 3237 size_t tailroom); 3238 3239/** 3240 * ieee80211_rts_get - RTS frame generation function 3241 * @hw: pointer obtained from ieee80211_alloc_hw(). 3242 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3243 * @frame: pointer to the frame that is going to be protected by the RTS. 3244 * @frame_len: the frame length (in octets). 3245 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3246 * @rts: The buffer where to store the RTS frame. 3247 * 3248 * If the RTS frames are generated by the host system (i.e., not in 3249 * hardware/firmware), the low-level driver uses this function to receive 3250 * the next RTS frame from the 802.11 code. The low-level is responsible 3251 * for calling this function before and RTS frame is needed. 3252 */ 3253void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3254 const void *frame, size_t frame_len, 3255 const struct ieee80211_tx_info *frame_txctl, 3256 struct ieee80211_rts *rts); 3257 3258/** 3259 * ieee80211_rts_duration - Get the duration field for an RTS frame 3260 * @hw: pointer obtained from ieee80211_alloc_hw(). 3261 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3262 * @frame_len: the length of the frame that is going to be protected by the RTS. 3263 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3264 * 3265 * If the RTS is generated in firmware, but the host system must provide 3266 * the duration field, the low-level driver uses this function to receive 3267 * the duration field value in little-endian byteorder. 3268 * 3269 * Return: The duration. 3270 */ 3271__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 3272 struct ieee80211_vif *vif, size_t frame_len, 3273 const struct ieee80211_tx_info *frame_txctl); 3274 3275/** 3276 * ieee80211_ctstoself_get - CTS-to-self frame generation function 3277 * @hw: pointer obtained from ieee80211_alloc_hw(). 3278 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3279 * @frame: pointer to the frame that is going to be protected by the CTS-to-self. 3280 * @frame_len: the frame length (in octets). 3281 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3282 * @cts: The buffer where to store the CTS-to-self frame. 3283 * 3284 * If the CTS-to-self frames are generated by the host system (i.e., not in 3285 * hardware/firmware), the low-level driver uses this function to receive 3286 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible 3287 * for calling this function before and CTS-to-self frame is needed. 3288 */ 3289void ieee80211_ctstoself_get(struct ieee80211_hw *hw, 3290 struct ieee80211_vif *vif, 3291 const void *frame, size_t frame_len, 3292 const struct ieee80211_tx_info *frame_txctl, 3293 struct ieee80211_cts *cts); 3294 3295/** 3296 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame 3297 * @hw: pointer obtained from ieee80211_alloc_hw(). 3298 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3299 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. 3300 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3301 * 3302 * If the CTS-to-self is generated in firmware, but the host system must provide 3303 * the duration field, the low-level driver uses this function to receive 3304 * the duration field value in little-endian byteorder. 3305 * 3306 * Return: The duration. 3307 */ 3308__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 3309 struct ieee80211_vif *vif, 3310 size_t frame_len, 3311 const struct ieee80211_tx_info *frame_txctl); 3312 3313/** 3314 * ieee80211_generic_frame_duration - Calculate the duration field for a frame 3315 * @hw: pointer obtained from ieee80211_alloc_hw(). 3316 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3317 * @band: the band to calculate the frame duration on 3318 * @frame_len: the length of the frame. 3319 * @rate: the rate at which the frame is going to be transmitted. 3320 * 3321 * Calculate the duration field of some generic frame, given its 3322 * length and transmission rate (in 100kbps). 3323 * 3324 * Return: The duration. 3325 */ 3326__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 3327 struct ieee80211_vif *vif, 3328 enum ieee80211_band band, 3329 size_t frame_len, 3330 struct ieee80211_rate *rate); 3331 3332/** 3333 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames 3334 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3335 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3336 * 3337 * Function for accessing buffered broadcast and multicast frames. If 3338 * hardware/firmware does not implement buffering of broadcast/multicast 3339 * frames when power saving is used, 802.11 code buffers them in the host 3340 * memory. The low-level driver uses this function to fetch next buffered 3341 * frame. In most cases, this is used when generating beacon frame. 3342 * 3343 * Return: A pointer to the next buffered skb or NULL if no more buffered 3344 * frames are available. 3345 * 3346 * Note: buffered frames are returned only after DTIM beacon frame was 3347 * generated with ieee80211_beacon_get() and the low-level driver must thus 3348 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns 3349 * NULL if the previous generated beacon was not DTIM, so the low-level driver 3350 * does not need to check for DTIM beacons separately and should be able to 3351 * use common code for all beacons. 3352 */ 3353struct sk_buff * 3354ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3355 3356/** 3357 * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32 3358 * 3359 * This function returns the TKIP phase 1 key for the given IV32. 3360 * 3361 * @keyconf: the parameter passed with the set key 3362 * @iv32: IV32 to get the P1K for 3363 * @p1k: a buffer to which the key will be written, as 5 u16 values 3364 */ 3365void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, 3366 u32 iv32, u16 *p1k); 3367 3368/** 3369 * ieee80211_get_tkip_p1k - get a TKIP phase 1 key 3370 * 3371 * This function returns the TKIP phase 1 key for the IV32 taken 3372 * from the given packet. 3373 * 3374 * @keyconf: the parameter passed with the set key 3375 * @skb: the packet to take the IV32 value from that will be encrypted 3376 * with this P1K 3377 * @p1k: a buffer to which the key will be written, as 5 u16 values 3378 */ 3379static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, 3380 struct sk_buff *skb, u16 *p1k) 3381{ 3382 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3383 const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); 3384 u32 iv32 = get_unaligned_le32(&data[4]); 3385 3386 ieee80211_get_tkip_p1k_iv(keyconf, iv32, p1k); 3387} 3388 3389/** 3390 * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX 3391 * 3392 * This function returns the TKIP phase 1 key for the given IV32 3393 * and transmitter address. 3394 * 3395 * @keyconf: the parameter passed with the set key 3396 * @ta: TA that will be used with the key 3397 * @iv32: IV32 to get the P1K for 3398 * @p1k: a buffer to which the key will be written, as 5 u16 values 3399 */ 3400void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, 3401 const u8 *ta, u32 iv32, u16 *p1k); 3402 3403/** 3404 * ieee80211_get_tkip_p2k - get a TKIP phase 2 key 3405 * 3406 * This function computes the TKIP RC4 key for the IV values 3407 * in the packet. 3408 * 3409 * @keyconf: the parameter passed with the set key 3410 * @skb: the packet to take the IV32/IV16 values from that will be 3411 * encrypted with this key 3412 * @p2k: a buffer to which the key will be written, 16 bytes 3413 */ 3414void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, 3415 struct sk_buff *skb, u8 *p2k); 3416 3417/** 3418 * ieee80211_aes_cmac_calculate_k1_k2 - calculate the AES-CMAC sub keys 3419 * 3420 * This function computes the two AES-CMAC sub-keys, based on the 3421 * previously installed master key. 3422 * 3423 * @keyconf: the parameter passed with the set key 3424 * @k1: a buffer to be filled with the 1st sub-key 3425 * @k2: a buffer to be filled with the 2nd sub-key 3426 */ 3427void ieee80211_aes_cmac_calculate_k1_k2(struct ieee80211_key_conf *keyconf, 3428 u8 *k1, u8 *k2); 3429 3430/** 3431 * struct ieee80211_key_seq - key sequence counter 3432 * 3433 * @tkip: TKIP data, containing IV32 and IV16 in host byte order 3434 * @ccmp: PN data, most significant byte first (big endian, 3435 * reverse order than in packet) 3436 * @aes_cmac: PN data, most significant byte first (big endian, 3437 * reverse order than in packet) 3438 */ 3439struct ieee80211_key_seq { 3440 union { 3441 struct { 3442 u32 iv32; 3443 u16 iv16; 3444 } tkip; 3445 struct { 3446 u8 pn[6]; 3447 } ccmp; 3448 struct { 3449 u8 pn[6]; 3450 } aes_cmac; 3451 }; 3452}; 3453 3454/** 3455 * ieee80211_get_key_tx_seq - get key TX sequence counter 3456 * 3457 * @keyconf: the parameter passed with the set key 3458 * @seq: buffer to receive the sequence data 3459 * 3460 * This function allows a driver to retrieve the current TX IV/PN 3461 * for the given key. It must not be called if IV generation is 3462 * offloaded to the device. 3463 * 3464 * Note that this function may only be called when no TX processing 3465 * can be done concurrently, for example when queues are stopped 3466 * and the stop has been synchronized. 3467 */ 3468void ieee80211_get_key_tx_seq(struct ieee80211_key_conf *keyconf, 3469 struct ieee80211_key_seq *seq); 3470 3471/** 3472 * ieee80211_get_key_rx_seq - get key RX sequence counter 3473 * 3474 * @keyconf: the parameter passed with the set key 3475 * @tid: The TID, or -1 for the management frame value (CCMP only); 3476 * the value on TID 0 is also used for non-QoS frames. For 3477 * CMAC, only TID 0 is valid. 3478 * @seq: buffer to receive the sequence data 3479 * 3480 * This function allows a driver to retrieve the current RX IV/PNs 3481 * for the given key. It must not be called if IV checking is done 3482 * by the device and not by mac80211. 3483 * 3484 * Note that this function may only be called when no RX processing 3485 * can be done concurrently. 3486 */ 3487void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf, 3488 int tid, struct ieee80211_key_seq *seq); 3489 3490/** 3491 * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying 3492 * @vif: virtual interface the rekeying was done on 3493 * @bssid: The BSSID of the AP, for checking association 3494 * @replay_ctr: the new replay counter after GTK rekeying 3495 * @gfp: allocation flags 3496 */ 3497void ieee80211_gtk_rekey_notify(struct ieee80211_vif *vif, const u8 *bssid, 3498 const u8 *replay_ctr, gfp_t gfp); 3499 3500/** 3501 * ieee80211_wake_queue - wake specific queue 3502 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3503 * @queue: queue number (counted from zero). 3504 * 3505 * Drivers should use this function instead of netif_wake_queue. 3506 */ 3507void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); 3508 3509/** 3510 * ieee80211_stop_queue - stop specific queue 3511 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3512 * @queue: queue number (counted from zero). 3513 * 3514 * Drivers should use this function instead of netif_stop_queue. 3515 */ 3516void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); 3517 3518/** 3519 * ieee80211_queue_stopped - test status of the queue 3520 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3521 * @queue: queue number (counted from zero). 3522 * 3523 * Drivers should use this function instead of netif_stop_queue. 3524 * 3525 * Return: %true if the queue is stopped. %false otherwise. 3526 */ 3527 3528int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); 3529 3530/** 3531 * ieee80211_stop_queues - stop all queues 3532 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3533 * 3534 * Drivers should use this function instead of netif_stop_queue. 3535 */ 3536void ieee80211_stop_queues(struct ieee80211_hw *hw); 3537 3538/** 3539 * ieee80211_wake_queues - wake all queues 3540 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3541 * 3542 * Drivers should use this function instead of netif_wake_queue. 3543 */ 3544void ieee80211_wake_queues(struct ieee80211_hw *hw); 3545 3546/** 3547 * ieee80211_scan_completed - completed hardware scan 3548 * 3549 * When hardware scan offload is used (i.e. the hw_scan() callback is 3550 * assigned) this function needs to be called by the driver to notify 3551 * mac80211 that the scan finished. This function can be called from 3552 * any context, including hardirq context. 3553 * 3554 * @hw: the hardware that finished the scan 3555 * @aborted: set to true if scan was aborted 3556 */ 3557void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); 3558 3559/** 3560 * ieee80211_sched_scan_results - got results from scheduled scan 3561 * 3562 * When a scheduled scan is running, this function needs to be called by the 3563 * driver whenever there are new scan results available. 3564 * 3565 * @hw: the hardware that is performing scheduled scans 3566 */ 3567void ieee80211_sched_scan_results(struct ieee80211_hw *hw); 3568 3569/** 3570 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped 3571 * 3572 * When a scheduled scan is running, this function can be called by 3573 * the driver if it needs to stop the scan to perform another task. 3574 * Usual scenarios are drivers that cannot continue the scheduled scan 3575 * while associating, for instance. 3576 * 3577 * @hw: the hardware that is performing scheduled scans 3578 */ 3579void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw); 3580 3581/** 3582 * enum ieee80211_interface_iteration_flags - interface iteration flags 3583 * @IEEE80211_IFACE_ITER_NORMAL: Iterate over all interfaces that have 3584 * been added to the driver; However, note that during hardware 3585 * reconfiguration (after restart_hw) it will iterate over a new 3586 * interface and over all the existing interfaces even if they 3587 * haven't been re-added to the driver yet. 3588 * @IEEE80211_IFACE_ITER_RESUME_ALL: During resume, iterate over all 3589 * interfaces, even if they haven't been re-added to the driver yet. 3590 */ 3591enum ieee80211_interface_iteration_flags { 3592 IEEE80211_IFACE_ITER_NORMAL = 0, 3593 IEEE80211_IFACE_ITER_RESUME_ALL = BIT(0), 3594}; 3595 3596/** 3597 * ieee80211_iterate_active_interfaces - iterate active interfaces 3598 * 3599 * This function iterates over the interfaces associated with a given 3600 * hardware that are currently active and calls the callback for them. 3601 * This function allows the iterator function to sleep, when the iterator 3602 * function is atomic @ieee80211_iterate_active_interfaces_atomic can 3603 * be used. 3604 * Does not iterate over a new interface during add_interface(). 3605 * 3606 * @hw: the hardware struct of which the interfaces should be iterated over 3607 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3608 * @iterator: the iterator function to call 3609 * @data: first argument of the iterator function 3610 */ 3611void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, 3612 u32 iter_flags, 3613 void (*iterator)(void *data, u8 *mac, 3614 struct ieee80211_vif *vif), 3615 void *data); 3616 3617/** 3618 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces 3619 * 3620 * This function iterates over the interfaces associated with a given 3621 * hardware that are currently active and calls the callback for them. 3622 * This function requires the iterator callback function to be atomic, 3623 * if that is not desired, use @ieee80211_iterate_active_interfaces instead. 3624 * Does not iterate over a new interface during add_interface(). 3625 * 3626 * @hw: the hardware struct of which the interfaces should be iterated over 3627 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3628 * @iterator: the iterator function to call, cannot sleep 3629 * @data: first argument of the iterator function 3630 */ 3631void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, 3632 u32 iter_flags, 3633 void (*iterator)(void *data, 3634 u8 *mac, 3635 struct ieee80211_vif *vif), 3636 void *data); 3637 3638/** 3639 * ieee80211_queue_work - add work onto the mac80211 workqueue 3640 * 3641 * Drivers and mac80211 use this to add work onto the mac80211 workqueue. 3642 * This helper ensures drivers are not queueing work when they should not be. 3643 * 3644 * @hw: the hardware struct for the interface we are adding work for 3645 * @work: the work we want to add onto the mac80211 workqueue 3646 */ 3647void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); 3648 3649/** 3650 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue 3651 * 3652 * Drivers and mac80211 use this to queue delayed work onto the mac80211 3653 * workqueue. 3654 * 3655 * @hw: the hardware struct for the interface we are adding work for 3656 * @dwork: delayable work to queue onto the mac80211 workqueue 3657 * @delay: number of jiffies to wait before queueing 3658 */ 3659void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 3660 struct delayed_work *dwork, 3661 unsigned long delay); 3662 3663/** 3664 * ieee80211_start_tx_ba_session - Start a tx Block Ack session. 3665 * @sta: the station for which to start a BA session 3666 * @tid: the TID to BA on. 3667 * @timeout: session timeout value (in TUs) 3668 * 3669 * Return: success if addBA request was sent, failure otherwise 3670 * 3671 * Although mac80211/low level driver/user space application can estimate 3672 * the need to start aggregation on a certain RA/TID, the session level 3673 * will be managed by the mac80211. 3674 */ 3675int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, 3676 u16 timeout); 3677 3678/** 3679 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. 3680 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3681 * @ra: receiver address of the BA session recipient. 3682 * @tid: the TID to BA on. 3683 * 3684 * This function must be called by low level driver once it has 3685 * finished with preparations for the BA session. It can be called 3686 * from any context. 3687 */ 3688void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3689 u16 tid); 3690 3691/** 3692 * ieee80211_stop_tx_ba_session - Stop a Block Ack session. 3693 * @sta: the station whose BA session to stop 3694 * @tid: the TID to stop BA. 3695 * 3696 * Return: negative error if the TID is invalid, or no aggregation active 3697 * 3698 * Although mac80211/low level driver/user space application can estimate 3699 * the need to stop aggregation on a certain RA/TID, the session level 3700 * will be managed by the mac80211. 3701 */ 3702int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); 3703 3704/** 3705 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. 3706 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3707 * @ra: receiver address of the BA session recipient. 3708 * @tid: the desired TID to BA on. 3709 * 3710 * This function must be called by low level driver once it has 3711 * finished with preparations for the BA session tear down. It 3712 * can be called from any context. 3713 */ 3714void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3715 u16 tid); 3716 3717/** 3718 * ieee80211_find_sta - find a station 3719 * 3720 * @vif: virtual interface to look for station on 3721 * @addr: station's address 3722 * 3723 * Return: The station, if found. %NULL otherwise. 3724 * 3725 * Note: This function must be called under RCU lock and the 3726 * resulting pointer is only valid under RCU lock as well. 3727 */ 3728struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, 3729 const u8 *addr); 3730 3731/** 3732 * ieee80211_find_sta_by_ifaddr - find a station on hardware 3733 * 3734 * @hw: pointer as obtained from ieee80211_alloc_hw() 3735 * @addr: remote station's address 3736 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. 3737 * 3738 * Return: The station, if found. %NULL otherwise. 3739 * 3740 * Note: This function must be called under RCU lock and the 3741 * resulting pointer is only valid under RCU lock as well. 3742 * 3743 * NOTE: You may pass NULL for localaddr, but then you will just get 3744 * the first STA that matches the remote address 'addr'. 3745 * We can have multiple STA associated with multiple 3746 * logical stations (e.g. consider a station connecting to another 3747 * BSSID on the same AP hardware without disconnecting first). 3748 * In this case, the result of this method with localaddr NULL 3749 * is not reliable. 3750 * 3751 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. 3752 */ 3753struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, 3754 const u8 *addr, 3755 const u8 *localaddr); 3756 3757/** 3758 * ieee80211_sta_block_awake - block station from waking up 3759 * @hw: the hardware 3760 * @pubsta: the station 3761 * @block: whether to block or unblock 3762 * 3763 * Some devices require that all frames that are on the queues 3764 * for a specific station that went to sleep are flushed before 3765 * a poll response or frames after the station woke up can be 3766 * delivered to that it. Note that such frames must be rejected 3767 * by the driver as filtered, with the appropriate status flag. 3768 * 3769 * This function allows implementing this mode in a race-free 3770 * manner. 3771 * 3772 * To do this, a driver must keep track of the number of frames 3773 * still enqueued for a specific station. If this number is not 3774 * zero when the station goes to sleep, the driver must call 3775 * this function to force mac80211 to consider the station to 3776 * be asleep regardless of the station's actual state. Once the 3777 * number of outstanding frames reaches zero, the driver must 3778 * call this function again to unblock the station. That will 3779 * cause mac80211 to be able to send ps-poll responses, and if 3780 * the station queried in the meantime then frames will also 3781 * be sent out as a result of this. Additionally, the driver 3782 * will be notified that the station woke up some time after 3783 * it is unblocked, regardless of whether the station actually 3784 * woke up while blocked or not. 3785 */ 3786void ieee80211_sta_block_awake(struct ieee80211_hw *hw, 3787 struct ieee80211_sta *pubsta, bool block); 3788 3789/** 3790 * ieee80211_sta_eosp - notify mac80211 about end of SP 3791 * @pubsta: the station 3792 * 3793 * When a device transmits frames in a way that it can't tell 3794 * mac80211 in the TX status about the EOSP, it must clear the 3795 * %IEEE80211_TX_STATUS_EOSP bit and call this function instead. 3796 * This applies for PS-Poll as well as uAPSD. 3797 * 3798 * Note that there is no non-_irqsafe version right now as 3799 * it wasn't needed, but just like _tx_status() and _rx() 3800 * must not be mixed in irqsafe/non-irqsafe versions, this 3801 * function must not be mixed with those either. Use the 3802 * all irqsafe, or all non-irqsafe, don't mix! If you need 3803 * the non-irqsafe version of this, you need to add it. 3804 */ 3805void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta); 3806 3807/** 3808 * ieee80211_iter_keys - iterate keys programmed into the device 3809 * @hw: pointer obtained from ieee80211_alloc_hw() 3810 * @vif: virtual interface to iterate, may be %NULL for all 3811 * @iter: iterator function that will be called for each key 3812 * @iter_data: custom data to pass to the iterator function 3813 * 3814 * This function can be used to iterate all the keys known to 3815 * mac80211, even those that weren't previously programmed into 3816 * the device. This is intended for use in WoWLAN if the device 3817 * needs reprogramming of the keys during suspend. Note that due 3818 * to locking reasons, it is also only safe to call this at few 3819 * spots since it must hold the RTNL and be able to sleep. 3820 * 3821 * The order in which the keys are iterated matches the order 3822 * in which they were originally installed and handed to the 3823 * set_key callback. 3824 */ 3825void ieee80211_iter_keys(struct ieee80211_hw *hw, 3826 struct ieee80211_vif *vif, 3827 void (*iter)(struct ieee80211_hw *hw, 3828 struct ieee80211_vif *vif, 3829 struct ieee80211_sta *sta, 3830 struct ieee80211_key_conf *key, 3831 void *data), 3832 void *iter_data); 3833 3834/** 3835 * ieee80211_iter_chan_contexts_atomic - iterate channel contexts 3836 * @hw: pointre obtained from ieee80211_alloc_hw(). 3837 * @iter: iterator function 3838 * @iter_data: data passed to iterator function 3839 * 3840 * Iterate all active channel contexts. This function is atomic and 3841 * doesn't acquire any locks internally that might be held in other 3842 * places while calling into the driver. 3843 * 3844 * The iterator will not find a context that's being added (during 3845 * the driver callback to add it) but will find it while it's being 3846 * removed. 3847 * 3848 * Note that during hardware restart, all contexts that existed 3849 * before the restart are considered already present so will be 3850 * found while iterating, whether they've been re-added already 3851 * or not. 3852 */ 3853void ieee80211_iter_chan_contexts_atomic( 3854 struct ieee80211_hw *hw, 3855 void (*iter)(struct ieee80211_hw *hw, 3856 struct ieee80211_chanctx_conf *chanctx_conf, 3857 void *data), 3858 void *iter_data); 3859 3860/** 3861 * ieee80211_ap_probereq_get - retrieve a Probe Request template 3862 * @hw: pointer obtained from ieee80211_alloc_hw(). 3863 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3864 * 3865 * Creates a Probe Request template which can, for example, be uploaded to 3866 * hardware. The template is filled with bssid, ssid and supported rate 3867 * information. This function must only be called from within the 3868 * .bss_info_changed callback function and only in managed mode. The function 3869 * is only useful when the interface is associated, otherwise it will return 3870 * %NULL. 3871 * 3872 * Return: The Probe Request template. %NULL on error. 3873 */ 3874struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 3875 struct ieee80211_vif *vif); 3876 3877/** 3878 * ieee80211_beacon_loss - inform hardware does not receive beacons 3879 * 3880 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3881 * 3882 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER and 3883 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the 3884 * hardware is not receiving beacons with this function. 3885 */ 3886void ieee80211_beacon_loss(struct ieee80211_vif *vif); 3887 3888/** 3889 * ieee80211_connection_loss - inform hardware has lost connection to the AP 3890 * 3891 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3892 * 3893 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER, and 3894 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver 3895 * needs to inform if the connection to the AP has been lost. 3896 * The function may also be called if the connection needs to be terminated 3897 * for some other reason, even if %IEEE80211_HW_CONNECTION_MONITOR isn't set. 3898 * 3899 * This function will cause immediate change to disassociated state, 3900 * without connection recovery attempts. 3901 */ 3902void ieee80211_connection_loss(struct ieee80211_vif *vif); 3903 3904/** 3905 * ieee80211_resume_disconnect - disconnect from AP after resume 3906 * 3907 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3908 * 3909 * Instructs mac80211 to disconnect from the AP after resume. 3910 * Drivers can use this after WoWLAN if they know that the 3911 * connection cannot be kept up, for example because keys were 3912 * used while the device was asleep but the replay counters or 3913 * similar cannot be retrieved from the device during resume. 3914 * 3915 * Note that due to implementation issues, if the driver uses 3916 * the reconfiguration functionality during resume the interface 3917 * will still be added as associated first during resume and then 3918 * disconnect normally later. 3919 * 3920 * This function can only be called from the resume callback and 3921 * the driver must not be holding any of its own locks while it 3922 * calls this function, or at least not any locks it needs in the 3923 * key configuration paths (if it supports HW crypto). 3924 */ 3925void ieee80211_resume_disconnect(struct ieee80211_vif *vif); 3926 3927/** 3928 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring 3929 * rssi threshold triggered 3930 * 3931 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3932 * @rssi_event: the RSSI trigger event type 3933 * @gfp: context flags 3934 * 3935 * When the %IEEE80211_VIF_SUPPORTS_CQM_RSSI is set, and a connection quality 3936 * monitoring is configured with an rssi threshold, the driver will inform 3937 * whenever the rssi level reaches the threshold. 3938 */ 3939void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 3940 enum nl80211_cqm_rssi_threshold_event rssi_event, 3941 gfp_t gfp); 3942 3943/** 3944 * ieee80211_chswitch_done - Complete channel switch process 3945 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3946 * @success: make the channel switch successful or not 3947 * 3948 * Complete the channel switch post-process: set the new operational channel 3949 * and wake up the suspended queues. 3950 */ 3951void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); 3952 3953/** 3954 * ieee80211_request_smps - request SM PS transition 3955 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3956 * @smps_mode: new SM PS mode 3957 * 3958 * This allows the driver to request an SM PS transition in managed 3959 * mode. This is useful when the driver has more information than 3960 * the stack about possible interference, for example by bluetooth. 3961 */ 3962void ieee80211_request_smps(struct ieee80211_vif *vif, 3963 enum ieee80211_smps_mode smps_mode); 3964 3965/** 3966 * ieee80211_ready_on_channel - notification of remain-on-channel start 3967 * @hw: pointer as obtained from ieee80211_alloc_hw() 3968 */ 3969void ieee80211_ready_on_channel(struct ieee80211_hw *hw); 3970 3971/** 3972 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired 3973 * @hw: pointer as obtained from ieee80211_alloc_hw() 3974 */ 3975void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); 3976 3977/** 3978 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions 3979 * 3980 * in order not to harm the system performance and user experience, the device 3981 * may request not to allow any rx ba session and tear down existing rx ba 3982 * sessions based on system constraints such as periodic BT activity that needs 3983 * to limit wlan activity (eg.sco or a2dp)." 3984 * in such cases, the intention is to limit the duration of the rx ppdu and 3985 * therefore prevent the peer device to use a-mpdu aggregation. 3986 * 3987 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3988 * @ba_rx_bitmap: Bit map of open rx ba per tid 3989 * @addr: & to bssid mac address 3990 */ 3991void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, 3992 const u8 *addr); 3993 3994/** 3995 * ieee80211_send_bar - send a BlockAckReq frame 3996 * 3997 * can be used to flush pending frames from the peer's aggregation reorder 3998 * buffer. 3999 * 4000 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4001 * @ra: the peer's destination address 4002 * @tid: the TID of the aggregation session 4003 * @ssn: the new starting sequence number for the receiver 4004 */ 4005void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn); 4006 4007/* Rate control API */ 4008 4009/** 4010 * struct ieee80211_tx_rate_control - rate control information for/from RC algo 4011 * 4012 * @hw: The hardware the algorithm is invoked for. 4013 * @sband: The band this frame is being transmitted on. 4014 * @bss_conf: the current BSS configuration 4015 * @skb: the skb that will be transmitted, the control information in it needs 4016 * to be filled in 4017 * @reported_rate: The rate control algorithm can fill this in to indicate 4018 * which rate should be reported to userspace as the current rate and 4019 * used for rate calculations in the mesh network. 4020 * @rts: whether RTS will be used for this frame because it is longer than the 4021 * RTS threshold 4022 * @short_preamble: whether mac80211 will request short-preamble transmission 4023 * if the selected rate supports it 4024 * @max_rate_idx: user-requested maximum (legacy) rate 4025 * (deprecated; this will be removed once drivers get updated to use 4026 * rate_idx_mask) 4027 * @rate_idx_mask: user-requested (legacy) rate mask 4028 * @rate_idx_mcs_mask: user-requested MCS rate mask 4029 * @bss: whether this frame is sent out in AP or IBSS mode 4030 */ 4031struct ieee80211_tx_rate_control { 4032 struct ieee80211_hw *hw; 4033 struct ieee80211_supported_band *sband; 4034 struct ieee80211_bss_conf *bss_conf; 4035 struct sk_buff *skb; 4036 struct ieee80211_tx_rate reported_rate; 4037 bool rts, short_preamble; 4038 u8 max_rate_idx; 4039 u32 rate_idx_mask; 4040 u8 rate_idx_mcs_mask[IEEE80211_HT_MCS_MASK_LEN]; 4041 bool bss; 4042}; 4043 4044struct rate_control_ops { 4045 struct module *module; 4046 const char *name; 4047 void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); 4048 void (*free)(void *priv); 4049 4050 void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); 4051 void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, 4052 struct ieee80211_sta *sta, void *priv_sta); 4053 void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, 4054 struct ieee80211_sta *sta, void *priv_sta, 4055 u32 changed); 4056 void (*free_sta)(void *priv, struct ieee80211_sta *sta, 4057 void *priv_sta); 4058 4059 void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, 4060 struct ieee80211_sta *sta, void *priv_sta, 4061 struct sk_buff *skb); 4062 void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, 4063 struct ieee80211_tx_rate_control *txrc); 4064 4065 void (*add_sta_debugfs)(void *priv, void *priv_sta, 4066 struct dentry *dir); 4067 void (*remove_sta_debugfs)(void *priv, void *priv_sta); 4068}; 4069 4070static inline int rate_supported(struct ieee80211_sta *sta, 4071 enum ieee80211_band band, 4072 int index) 4073{ 4074 return (sta == NULL || sta->supp_rates[band] & BIT(index)); 4075} 4076 4077/** 4078 * rate_control_send_low - helper for drivers for management/no-ack frames 4079 * 4080 * Rate control algorithms that agree to use the lowest rate to 4081 * send management frames and NO_ACK data with the respective hw 4082 * retries should use this in the beginning of their mac80211 get_rate 4083 * callback. If true is returned the rate control can simply return. 4084 * If false is returned we guarantee that sta and sta and priv_sta is 4085 * not null. 4086 * 4087 * Rate control algorithms wishing to do more intelligent selection of 4088 * rate for multicast/broadcast frames may choose to not use this. 4089 * 4090 * @sta: &struct ieee80211_sta pointer to the target destination. Note 4091 * that this may be null. 4092 * @priv_sta: private rate control structure. This may be null. 4093 * @txrc: rate control information we sholud populate for mac80211. 4094 */ 4095bool rate_control_send_low(struct ieee80211_sta *sta, 4096 void *priv_sta, 4097 struct ieee80211_tx_rate_control *txrc); 4098 4099 4100static inline s8 4101rate_lowest_index(struct ieee80211_supported_band *sband, 4102 struct ieee80211_sta *sta) 4103{ 4104 int i; 4105 4106 for (i = 0; i < sband->n_bitrates; i++) 4107 if (rate_supported(sta, sband->band, i)) 4108 return i; 4109 4110 /* warn when we cannot find a rate. */ 4111 WARN_ON_ONCE(1); 4112 4113 /* and return 0 (the lowest index) */ 4114 return 0; 4115} 4116 4117static inline 4118bool rate_usable_index_exists(struct ieee80211_supported_band *sband, 4119 struct ieee80211_sta *sta) 4120{ 4121 unsigned int i; 4122 4123 for (i = 0; i < sband->n_bitrates; i++) 4124 if (rate_supported(sta, sband->band, i)) 4125 return true; 4126 return false; 4127} 4128 4129int ieee80211_rate_control_register(struct rate_control_ops *ops); 4130void ieee80211_rate_control_unregister(struct rate_control_ops *ops); 4131 4132static inline bool 4133conf_is_ht20(struct ieee80211_conf *conf) 4134{ 4135 return conf->channel_type == NL80211_CHAN_HT20; 4136} 4137 4138static inline bool 4139conf_is_ht40_minus(struct ieee80211_conf *conf) 4140{ 4141 return conf->channel_type == NL80211_CHAN_HT40MINUS; 4142} 4143 4144static inline bool 4145conf_is_ht40_plus(struct ieee80211_conf *conf) 4146{ 4147 return conf->channel_type == NL80211_CHAN_HT40PLUS; 4148} 4149 4150static inline bool 4151conf_is_ht40(struct ieee80211_conf *conf) 4152{ 4153 return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); 4154} 4155 4156static inline bool 4157conf_is_ht(struct ieee80211_conf *conf) 4158{ 4159 return conf->channel_type != NL80211_CHAN_NO_HT; 4160} 4161 4162static inline enum nl80211_iftype 4163ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) 4164{ 4165 if (p2p) { 4166 switch (type) { 4167 case NL80211_IFTYPE_STATION: 4168 return NL80211_IFTYPE_P2P_CLIENT; 4169 case NL80211_IFTYPE_AP: 4170 return NL80211_IFTYPE_P2P_GO; 4171 default: 4172 break; 4173 } 4174 } 4175 return type; 4176} 4177 4178static inline enum nl80211_iftype 4179ieee80211_vif_type_p2p(struct ieee80211_vif *vif) 4180{ 4181 return ieee80211_iftype_p2p(vif->type, vif->p2p); 4182} 4183 4184void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 4185 int rssi_min_thold, 4186 int rssi_max_thold); 4187 4188void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif); 4189 4190/** 4191 * ieee80211_ave_rssi - report the average RSSI for the specified interface 4192 * 4193 * @vif: the specified virtual interface 4194 * 4195 * Note: This function assumes that the given vif is valid. 4196 * 4197 * Return: The average RSSI value for the requested interface, or 0 if not 4198 * applicable. 4199 */ 4200int ieee80211_ave_rssi(struct ieee80211_vif *vif); 4201 4202/** 4203 * ieee80211_report_wowlan_wakeup - report WoWLAN wakeup 4204 * @vif: virtual interface 4205 * @wakeup: wakeup reason(s) 4206 * @gfp: allocation flags 4207 * 4208 * See cfg80211_report_wowlan_wakeup(). 4209 */ 4210void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, 4211 struct cfg80211_wowlan_wakeup *wakeup, 4212 gfp_t gfp); 4213 4214#endif /* MAC80211_H */ 4215