mac80211.h revision 09b85568c142fc1c776dea86a24fcb05f0eeb48b
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_SCAN_WHILE_IDLE: The device can do hw scan while 1367 * being idle (i.e. mac80211 doesn't have to go idle-off during the 1368 * the scan). 1369 * 1370 * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of 1371 * a virtual monitor interface when monitor interfaces are the only 1372 * active interfaces. 1373 * 1374 * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface 1375 * queue mapping in order to use different queues (not just one per AC) 1376 * for different virtual interfaces. See the doc section on HW queue 1377 * control for more details. 1378 * 1379 * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any 1380 * P2P Interface. This will be honoured even if more than one interface 1381 * is supported. 1382 * 1383 * @IEEE80211_HW_TIMING_BEACON_ONLY: Use sync timing from beacon frames 1384 * only, to allow getting TBTT of a DTIM beacon. 1385 */ 1386enum ieee80211_hw_flags { 1387 IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, 1388 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, 1389 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, 1390 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, 1391 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, 1392 IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, 1393 IEEE80211_HW_SIGNAL_DBM = 1<<6, 1394 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC = 1<<7, 1395 IEEE80211_HW_SPECTRUM_MGMT = 1<<8, 1396 IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, 1397 IEEE80211_HW_SUPPORTS_PS = 1<<10, 1398 IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, 1399 IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, 1400 IEEE80211_HW_MFP_CAPABLE = 1<<13, 1401 IEEE80211_HW_WANT_MONITOR_VIF = 1<<14, 1402 IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, 1403 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, 1404 IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, 1405 IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, 1406 IEEE80211_HW_CONNECTION_MONITOR = 1<<19, 1407 IEEE80211_HW_QUEUE_CONTROL = 1<<20, 1408 IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, 1409 IEEE80211_HW_AP_LINK_PS = 1<<22, 1410 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW = 1<<23, 1411 IEEE80211_HW_SCAN_WHILE_IDLE = 1<<24, 1412 IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF = 1<<25, 1413 IEEE80211_HW_TIMING_BEACON_ONLY = 1<<26, 1414}; 1415 1416/** 1417 * struct ieee80211_hw - hardware information and state 1418 * 1419 * This structure contains the configuration and hardware 1420 * information for an 802.11 PHY. 1421 * 1422 * @wiphy: This points to the &struct wiphy allocated for this 1423 * 802.11 PHY. You must fill in the @perm_addr and @dev 1424 * members of this structure using SET_IEEE80211_DEV() 1425 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported 1426 * bands (with channels, bitrates) are registered here. 1427 * 1428 * @conf: &struct ieee80211_conf, device configuration, don't use. 1429 * 1430 * @priv: pointer to private area that was allocated for driver use 1431 * along with this structure. 1432 * 1433 * @flags: hardware flags, see &enum ieee80211_hw_flags. 1434 * 1435 * @extra_tx_headroom: headroom to reserve in each transmit skb 1436 * for use by the driver (e.g. for transmit headers.) 1437 * 1438 * @channel_change_time: time (in microseconds) it takes to change channels. 1439 * 1440 * @max_signal: Maximum value for signal (rssi) in RX information, used 1441 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB 1442 * 1443 * @max_listen_interval: max listen interval in units of beacon interval 1444 * that HW supports 1445 * 1446 * @queues: number of available hardware transmit queues for 1447 * data packets. WMM/QoS requires at least four, these 1448 * queues need to have configurable access parameters. 1449 * 1450 * @rate_control_algorithm: rate control algorithm for this hardware. 1451 * If unset (NULL), the default algorithm will be used. Must be 1452 * set before calling ieee80211_register_hw(). 1453 * 1454 * @vif_data_size: size (in bytes) of the drv_priv data area 1455 * within &struct ieee80211_vif. 1456 * @sta_data_size: size (in bytes) of the drv_priv data area 1457 * within &struct ieee80211_sta. 1458 * @chanctx_data_size: size (in bytes) of the drv_priv data area 1459 * within &struct ieee80211_chanctx_conf. 1460 * 1461 * @max_rates: maximum number of alternate rate retry stages the hw 1462 * can handle. 1463 * @max_report_rates: maximum number of alternate rate retry stages 1464 * the hw can report back. 1465 * @max_rate_tries: maximum number of tries for each stage 1466 * 1467 * @napi_weight: weight used for NAPI polling. You must specify an 1468 * appropriate value here if a napi_poll operation is provided 1469 * by your driver. 1470 * 1471 * @max_rx_aggregation_subframes: maximum buffer size (number of 1472 * sub-frames) to be used for A-MPDU block ack receiver 1473 * aggregation. 1474 * This is only relevant if the device has restrictions on the 1475 * number of subframes, if it relies on mac80211 to do reordering 1476 * it shouldn't be set. 1477 * 1478 * @max_tx_aggregation_subframes: maximum number of subframes in an 1479 * aggregate an HT driver will transmit, used by the peer as a 1480 * hint to size its reorder buffer. 1481 * 1482 * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX 1483 * (if %IEEE80211_HW_QUEUE_CONTROL is set) 1484 * 1485 * @radiotap_mcs_details: lists which MCS information can the HW 1486 * reports, by default it is set to _MCS, _GI and _BW but doesn't 1487 * include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_* values, only 1488 * adding _BW is supported today. 1489 * 1490 * @radiotap_vht_details: lists which VHT MCS information the HW reports, 1491 * the default is _GI | _BANDWIDTH. 1492 * Use the %IEEE80211_RADIOTAP_VHT_KNOWN_* values. 1493 * 1494 * @netdev_features: netdev features to be set in each netdev created 1495 * from this HW. Note only HW checksum features are currently 1496 * compatible with mac80211. Other feature bits will be rejected. 1497 */ 1498struct ieee80211_hw { 1499 struct ieee80211_conf conf; 1500 struct wiphy *wiphy; 1501 const char *rate_control_algorithm; 1502 void *priv; 1503 u32 flags; 1504 unsigned int extra_tx_headroom; 1505 int channel_change_time; 1506 int vif_data_size; 1507 int sta_data_size; 1508 int chanctx_data_size; 1509 int napi_weight; 1510 u16 queues; 1511 u16 max_listen_interval; 1512 s8 max_signal; 1513 u8 max_rates; 1514 u8 max_report_rates; 1515 u8 max_rate_tries; 1516 u8 max_rx_aggregation_subframes; 1517 u8 max_tx_aggregation_subframes; 1518 u8 offchannel_tx_hw_queue; 1519 u8 radiotap_mcs_details; 1520 u16 radiotap_vht_details; 1521 netdev_features_t netdev_features; 1522}; 1523 1524/** 1525 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy 1526 * 1527 * @wiphy: the &struct wiphy which we want to query 1528 * 1529 * mac80211 drivers can use this to get to their respective 1530 * &struct ieee80211_hw. Drivers wishing to get to their own private 1531 * structure can then access it via hw->priv. Note that mac802111 drivers should 1532 * not use wiphy_priv() to try to get their private driver structure as this 1533 * is already used internally by mac80211. 1534 * 1535 * Return: The mac80211 driver hw struct of @wiphy. 1536 */ 1537struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); 1538 1539/** 1540 * SET_IEEE80211_DEV - set device for 802.11 hardware 1541 * 1542 * @hw: the &struct ieee80211_hw to set the device for 1543 * @dev: the &struct device of this 802.11 device 1544 */ 1545static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) 1546{ 1547 set_wiphy_dev(hw->wiphy, dev); 1548} 1549 1550/** 1551 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware 1552 * 1553 * @hw: the &struct ieee80211_hw to set the MAC address for 1554 * @addr: the address to set 1555 */ 1556static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) 1557{ 1558 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); 1559} 1560 1561static inline struct ieee80211_rate * 1562ieee80211_get_tx_rate(const struct ieee80211_hw *hw, 1563 const struct ieee80211_tx_info *c) 1564{ 1565 if (WARN_ON_ONCE(c->control.rates[0].idx < 0)) 1566 return NULL; 1567 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; 1568} 1569 1570static inline struct ieee80211_rate * 1571ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, 1572 const struct ieee80211_tx_info *c) 1573{ 1574 if (c->control.rts_cts_rate_idx < 0) 1575 return NULL; 1576 return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; 1577} 1578 1579static inline struct ieee80211_rate * 1580ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, 1581 const struct ieee80211_tx_info *c, int idx) 1582{ 1583 if (c->control.rates[idx + 1].idx < 0) 1584 return NULL; 1585 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; 1586} 1587 1588/** 1589 * ieee80211_free_txskb - free TX skb 1590 * @hw: the hardware 1591 * @skb: the skb 1592 * 1593 * Free a transmit skb. Use this funtion when some failure 1594 * to transmit happened and thus status cannot be reported. 1595 */ 1596void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb); 1597 1598/** 1599 * DOC: Hardware crypto acceleration 1600 * 1601 * mac80211 is capable of taking advantage of many hardware 1602 * acceleration designs for encryption and decryption operations. 1603 * 1604 * The set_key() callback in the &struct ieee80211_ops for a given 1605 * device is called to enable hardware acceleration of encryption and 1606 * decryption. The callback takes a @sta parameter that will be NULL 1607 * for default keys or keys used for transmission only, or point to 1608 * the station information for the peer for individual keys. 1609 * Multiple transmission keys with the same key index may be used when 1610 * VLANs are configured for an access point. 1611 * 1612 * When transmitting, the TX control data will use the @hw_key_idx 1613 * selected by the driver by modifying the &struct ieee80211_key_conf 1614 * pointed to by the @key parameter to the set_key() function. 1615 * 1616 * The set_key() call for the %SET_KEY command should return 0 if 1617 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be 1618 * added; if you return 0 then hw_key_idx must be assigned to the 1619 * hardware key index, you are free to use the full u8 range. 1620 * 1621 * When the cmd is %DISABLE_KEY then it must succeed. 1622 * 1623 * Note that it is permissible to not decrypt a frame even if a key 1624 * for it has been uploaded to hardware, the stack will not make any 1625 * decision based on whether a key has been uploaded or not but rather 1626 * based on the receive flags. 1627 * 1628 * The &struct ieee80211_key_conf structure pointed to by the @key 1629 * parameter is guaranteed to be valid until another call to set_key() 1630 * removes it, but it can only be used as a cookie to differentiate 1631 * keys. 1632 * 1633 * In TKIP some HW need to be provided a phase 1 key, for RX decryption 1634 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key 1635 * handler. 1636 * The update_tkip_key() call updates the driver with the new phase 1 key. 1637 * This happens every time the iv16 wraps around (every 65536 packets). The 1638 * set_key() call will happen only once for each key (unless the AP did 1639 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is 1640 * provided by update_tkip_key only. The trigger that makes mac80211 call this 1641 * handler is software decryption with wrap around of iv16. 1642 * 1643 * The set_default_unicast_key() call updates the default WEP key index 1644 * configured to the hardware for WEP encryption type. This is required 1645 * for devices that support offload of data packets (e.g. ARP responses). 1646 */ 1647 1648/** 1649 * DOC: Powersave support 1650 * 1651 * mac80211 has support for various powersave implementations. 1652 * 1653 * First, it can support hardware that handles all powersaving by itself, 1654 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware 1655 * flag. In that case, it will be told about the desired powersave mode 1656 * with the %IEEE80211_CONF_PS flag depending on the association status. 1657 * The hardware must take care of sending nullfunc frames when necessary, 1658 * i.e. when entering and leaving powersave mode. The hardware is required 1659 * to look at the AID in beacons and signal to the AP that it woke up when 1660 * it finds traffic directed to it. 1661 * 1662 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in 1663 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused 1664 * with hardware wakeup and sleep states. Driver is responsible for waking 1665 * up the hardware before issuing commands to the hardware and putting it 1666 * back to sleep at appropriate times. 1667 * 1668 * When PS is enabled, hardware needs to wakeup for beacons and receive the 1669 * buffered multicast/broadcast frames after the beacon. Also it must be 1670 * possible to send frames and receive the acknowledment frame. 1671 * 1672 * Other hardware designs cannot send nullfunc frames by themselves and also 1673 * need software support for parsing the TIM bitmap. This is also supported 1674 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and 1675 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still 1676 * required to pass up beacons. The hardware is still required to handle 1677 * waking up for multicast traffic; if it cannot the driver must handle that 1678 * as best as it can, mac80211 is too slow to do that. 1679 * 1680 * Dynamic powersave is an extension to normal powersave in which the 1681 * hardware stays awake for a user-specified period of time after sending a 1682 * frame so that reply frames need not be buffered and therefore delayed to 1683 * the next wakeup. It's compromise of getting good enough latency when 1684 * there's data traffic and still saving significantly power in idle 1685 * periods. 1686 * 1687 * Dynamic powersave is simply supported by mac80211 enabling and disabling 1688 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS 1689 * flag and mac80211 will handle everything automatically. Additionally, 1690 * hardware having support for the dynamic PS feature may set the 1691 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support 1692 * dynamic PS mode itself. The driver needs to look at the 1693 * @dynamic_ps_timeout hardware configuration value and use it that value 1694 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable 1695 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS 1696 * enabled whenever user has enabled powersave. 1697 * 1698 * Driver informs U-APSD client support by enabling 1699 * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the 1700 * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS 1701 * Nullfunc frames and stay awake until the service period has ended. To 1702 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames 1703 * from that AC are transmitted with powersave enabled. 1704 * 1705 * Note: U-APSD client mode is not yet supported with 1706 * %IEEE80211_HW_PS_NULLFUNC_STACK. 1707 */ 1708 1709/** 1710 * DOC: Beacon filter support 1711 * 1712 * Some hardware have beacon filter support to reduce host cpu wakeups 1713 * which will reduce system power consumption. It usually works so that 1714 * the firmware creates a checksum of the beacon but omits all constantly 1715 * changing elements (TSF, TIM etc). Whenever the checksum changes the 1716 * beacon is forwarded to the host, otherwise it will be just dropped. That 1717 * way the host will only receive beacons where some relevant information 1718 * (for example ERP protection or WMM settings) have changed. 1719 * 1720 * Beacon filter support is advertised with the %IEEE80211_VIF_BEACON_FILTER 1721 * interface capability. The driver needs to enable beacon filter support 1722 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When 1723 * power save is enabled, the stack will not check for beacon loss and the 1724 * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). 1725 * 1726 * The time (or number of beacons missed) until the firmware notifies the 1727 * driver of a beacon loss event (which in turn causes the driver to call 1728 * ieee80211_beacon_loss()) should be configurable and will be controlled 1729 * by mac80211 and the roaming algorithm in the future. 1730 * 1731 * Since there may be constantly changing information elements that nothing 1732 * in the software stack cares about, we will, in the future, have mac80211 1733 * tell the driver which information elements are interesting in the sense 1734 * that we want to see changes in them. This will include 1735 * - a list of information element IDs 1736 * - a list of OUIs for the vendor information element 1737 * 1738 * Ideally, the hardware would filter out any beacons without changes in the 1739 * requested elements, but if it cannot support that it may, at the expense 1740 * of some efficiency, filter out only a subset. For example, if the device 1741 * doesn't support checking for OUIs it should pass up all changes in all 1742 * vendor information elements. 1743 * 1744 * Note that change, for the sake of simplification, also includes information 1745 * elements appearing or disappearing from the beacon. 1746 * 1747 * Some hardware supports an "ignore list" instead, just make sure nothing 1748 * that was requested is on the ignore list, and include commonly changing 1749 * information element IDs in the ignore list, for example 11 (BSS load) and 1750 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, 1751 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility 1752 * it could also include some currently unused IDs. 1753 * 1754 * 1755 * In addition to these capabilities, hardware should support notifying the 1756 * host of changes in the beacon RSSI. This is relevant to implement roaming 1757 * when no traffic is flowing (when traffic is flowing we see the RSSI of 1758 * the received data packets). This can consist in notifying the host when 1759 * the RSSI changes significantly or when it drops below or rises above 1760 * configurable thresholds. In the future these thresholds will also be 1761 * configured by mac80211 (which gets them from userspace) to implement 1762 * them as the roaming algorithm requires. 1763 * 1764 * If the hardware cannot implement this, the driver should ask it to 1765 * periodically pass beacon frames to the host so that software can do the 1766 * signal strength threshold checking. 1767 */ 1768 1769/** 1770 * DOC: Spatial multiplexing power save 1771 * 1772 * SMPS (Spatial multiplexing power save) is a mechanism to conserve 1773 * power in an 802.11n implementation. For details on the mechanism 1774 * and rationale, please refer to 802.11 (as amended by 802.11n-2009) 1775 * "11.2.3 SM power save". 1776 * 1777 * The mac80211 implementation is capable of sending action frames 1778 * to update the AP about the station's SMPS mode, and will instruct 1779 * the driver to enter the specific mode. It will also announce the 1780 * requested SMPS mode during the association handshake. Hardware 1781 * support for this feature is required, and can be indicated by 1782 * hardware flags. 1783 * 1784 * The default mode will be "automatic", which nl80211/cfg80211 1785 * defines to be dynamic SMPS in (regular) powersave, and SMPS 1786 * turned off otherwise. 1787 * 1788 * To support this feature, the driver must set the appropriate 1789 * hardware support flags, and handle the SMPS flag to the config() 1790 * operation. It will then with this mechanism be instructed to 1791 * enter the requested SMPS mode while associated to an HT AP. 1792 */ 1793 1794/** 1795 * DOC: Frame filtering 1796 * 1797 * mac80211 requires to see many management frames for proper 1798 * operation, and users may want to see many more frames when 1799 * in monitor mode. However, for best CPU usage and power consumption, 1800 * having as few frames as possible percolate through the stack is 1801 * desirable. Hence, the hardware should filter as much as possible. 1802 * 1803 * To achieve this, mac80211 uses filter flags (see below) to tell 1804 * the driver's configure_filter() function which frames should be 1805 * passed to mac80211 and which should be filtered out. 1806 * 1807 * Before configure_filter() is invoked, the prepare_multicast() 1808 * callback is invoked with the parameters @mc_count and @mc_list 1809 * for the combined multicast address list of all virtual interfaces. 1810 * It's use is optional, and it returns a u64 that is passed to 1811 * configure_filter(). Additionally, configure_filter() has the 1812 * arguments @changed_flags telling which flags were changed and 1813 * @total_flags with the new flag states. 1814 * 1815 * If your device has no multicast address filters your driver will 1816 * need to check both the %FIF_ALLMULTI flag and the @mc_count 1817 * parameter to see whether multicast frames should be accepted 1818 * or dropped. 1819 * 1820 * All unsupported flags in @total_flags must be cleared. 1821 * Hardware does not support a flag if it is incapable of _passing_ 1822 * the frame to the stack. Otherwise the driver must ignore 1823 * the flag, but not clear it. 1824 * You must _only_ clear the flag (announce no support for the 1825 * flag to mac80211) if you are not able to pass the packet type 1826 * to the stack (so the hardware always filters it). 1827 * So for example, you should clear @FIF_CONTROL, if your hardware 1828 * always filters control frames. If your hardware always passes 1829 * control frames to the kernel and is incapable of filtering them, 1830 * you do _not_ clear the @FIF_CONTROL flag. 1831 * This rule applies to all other FIF flags as well. 1832 */ 1833 1834/** 1835 * DOC: AP support for powersaving clients 1836 * 1837 * In order to implement AP and P2P GO modes, mac80211 has support for 1838 * client powersaving, both "legacy" PS (PS-Poll/null data) and uAPSD. 1839 * There currently is no support for sAPSD. 1840 * 1841 * There is one assumption that mac80211 makes, namely that a client 1842 * will not poll with PS-Poll and trigger with uAPSD at the same time. 1843 * Both are supported, and both can be used by the same client, but 1844 * they can't be used concurrently by the same client. This simplifies 1845 * the driver code. 1846 * 1847 * The first thing to keep in mind is that there is a flag for complete 1848 * driver implementation: %IEEE80211_HW_AP_LINK_PS. If this flag is set, 1849 * mac80211 expects the driver to handle most of the state machine for 1850 * powersaving clients and will ignore the PM bit in incoming frames. 1851 * Drivers then use ieee80211_sta_ps_transition() to inform mac80211 of 1852 * stations' powersave transitions. In this mode, mac80211 also doesn't 1853 * handle PS-Poll/uAPSD. 1854 * 1855 * In the mode without %IEEE80211_HW_AP_LINK_PS, mac80211 will check the 1856 * PM bit in incoming frames for client powersave transitions. When a 1857 * station goes to sleep, we will stop transmitting to it. There is, 1858 * however, a race condition: a station might go to sleep while there is 1859 * data buffered on hardware queues. If the device has support for this 1860 * it will reject frames, and the driver should give the frames back to 1861 * mac80211 with the %IEEE80211_TX_STAT_TX_FILTERED flag set which will 1862 * cause mac80211 to retry the frame when the station wakes up. The 1863 * driver is also notified of powersave transitions by calling its 1864 * @sta_notify callback. 1865 * 1866 * When the station is asleep, it has three choices: it can wake up, 1867 * it can PS-Poll, or it can possibly start a uAPSD service period. 1868 * Waking up is implemented by simply transmitting all buffered (and 1869 * filtered) frames to the station. This is the easiest case. When 1870 * the station sends a PS-Poll or a uAPSD trigger frame, mac80211 1871 * will inform the driver of this with the @allow_buffered_frames 1872 * callback; this callback is optional. mac80211 will then transmit 1873 * the frames as usual and set the %IEEE80211_TX_CTL_NO_PS_BUFFER 1874 * on each frame. The last frame in the service period (or the only 1875 * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to 1876 * indicate that it ends the service period; as this frame must have 1877 * TX status report it also sets %IEEE80211_TX_CTL_REQ_TX_STATUS. 1878 * When TX status is reported for this frame, the service period is 1879 * marked has having ended and a new one can be started by the peer. 1880 * 1881 * Additionally, non-bufferable MMPDUs can also be transmitted by 1882 * mac80211 with the %IEEE80211_TX_CTL_NO_PS_BUFFER set in them. 1883 * 1884 * Another race condition can happen on some devices like iwlwifi 1885 * when there are frames queued for the station and it wakes up 1886 * or polls; the frames that are already queued could end up being 1887 * transmitted first instead, causing reordering and/or wrong 1888 * processing of the EOSP. The cause is that allowing frames to be 1889 * transmitted to a certain station is out-of-band communication to 1890 * the device. To allow this problem to be solved, the driver can 1891 * call ieee80211_sta_block_awake() if frames are buffered when it 1892 * is notified that the station went to sleep. When all these frames 1893 * have been filtered (see above), it must call the function again 1894 * to indicate that the station is no longer blocked. 1895 * 1896 * If the driver buffers frames in the driver for aggregation in any 1897 * way, it must use the ieee80211_sta_set_buffered() call when it is 1898 * notified of the station going to sleep to inform mac80211 of any 1899 * TIDs that have frames buffered. Note that when a station wakes up 1900 * this information is reset (hence the requirement to call it when 1901 * informed of the station going to sleep). Then, when a service 1902 * period starts for any reason, @release_buffered_frames is called 1903 * with the number of frames to be released and which TIDs they are 1904 * to come from. In this case, the driver is responsible for setting 1905 * the EOSP (for uAPSD) and MORE_DATA bits in the released frames, 1906 * to help the @more_data paramter is passed to tell the driver if 1907 * there is more data on other TIDs -- the TIDs to release frames 1908 * from are ignored since mac80211 doesn't know how many frames the 1909 * buffers for those TIDs contain. 1910 * 1911 * If the driver also implement GO mode, where absence periods may 1912 * shorten service periods (or abort PS-Poll responses), it must 1913 * filter those response frames except in the case of frames that 1914 * are buffered in the driver -- those must remain buffered to avoid 1915 * reordering. Because it is possible that no frames are released 1916 * in this case, the driver must call ieee80211_sta_eosp_irqsafe() 1917 * to indicate to mac80211 that the service period ended anyway. 1918 * 1919 * Finally, if frames from multiple TIDs are released from mac80211 1920 * but the driver might reorder them, it must clear & set the flags 1921 * appropriately (only the last frame may have %IEEE80211_TX_STATUS_EOSP) 1922 * and also take care of the EOSP and MORE_DATA bits in the frame. 1923 * The driver may also use ieee80211_sta_eosp_irqsafe() in this case. 1924 */ 1925 1926/** 1927 * DOC: HW queue control 1928 * 1929 * Before HW queue control was introduced, mac80211 only had a single static 1930 * assignment of per-interface AC software queues to hardware queues. This 1931 * was problematic for a few reasons: 1932 * 1) off-channel transmissions might get stuck behind other frames 1933 * 2) multiple virtual interfaces couldn't be handled correctly 1934 * 3) after-DTIM frames could get stuck behind other frames 1935 * 1936 * To solve this, hardware typically uses multiple different queues for all 1937 * the different usages, and this needs to be propagated into mac80211 so it 1938 * won't have the same problem with the software queues. 1939 * 1940 * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability 1941 * flag that tells it that the driver implements its own queue control. To do 1942 * so, the driver will set up the various queues in each &struct ieee80211_vif 1943 * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will 1944 * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and 1945 * if necessary will queue the frame on the right software queue that mirrors 1946 * the hardware queue. 1947 * Additionally, the driver has to then use these HW queue IDs for the queue 1948 * management functions (ieee80211_stop_queue() et al.) 1949 * 1950 * The driver is free to set up the queue mappings as needed, multiple virtual 1951 * interfaces may map to the same hardware queues if needed. The setup has to 1952 * happen during add_interface or change_interface callbacks. For example, a 1953 * driver supporting station+station and station+AP modes might decide to have 1954 * 10 hardware queues to handle different scenarios: 1955 * 1956 * 4 AC HW queues for 1st vif: 0, 1, 2, 3 1957 * 4 AC HW queues for 2nd vif: 4, 5, 6, 7 1958 * after-DTIM queue for AP: 8 1959 * off-channel queue: 9 1960 * 1961 * It would then set up the hardware like this: 1962 * hw.offchannel_tx_hw_queue = 9 1963 * 1964 * and the first virtual interface that is added as follows: 1965 * vif.hw_queue[IEEE80211_AC_VO] = 0 1966 * vif.hw_queue[IEEE80211_AC_VI] = 1 1967 * vif.hw_queue[IEEE80211_AC_BE] = 2 1968 * vif.hw_queue[IEEE80211_AC_BK] = 3 1969 * vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE 1970 * and the second virtual interface with 4-7. 1971 * 1972 * If queue 6 gets full, for example, mac80211 would only stop the second 1973 * virtual interface's BE queue since virtual interface queues are per AC. 1974 * 1975 * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE 1976 * whenever the queue is not used (i.e. the interface is not in AP mode) if the 1977 * queue could potentially be shared since mac80211 will look at cab_queue when 1978 * a queue is stopped/woken even if the interface is not in AP mode. 1979 */ 1980 1981/** 1982 * enum ieee80211_filter_flags - hardware filter flags 1983 * 1984 * These flags determine what the filter in hardware should be 1985 * programmed to let through and what should not be passed to the 1986 * stack. It is always safe to pass more frames than requested, 1987 * but this has negative impact on power consumption. 1988 * 1989 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, 1990 * think of the BSS as your network segment and then this corresponds 1991 * to the regular ethernet device promiscuous mode. 1992 * 1993 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested 1994 * by the user or if the hardware is not capable of filtering by 1995 * multicast address. 1996 * 1997 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the 1998 * %RX_FLAG_FAILED_FCS_CRC for them) 1999 * 2000 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set 2001 * the %RX_FLAG_FAILED_PLCP_CRC for them 2002 * 2003 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate 2004 * to the hardware that it should not filter beacons or probe responses 2005 * by BSSID. Filtering them can greatly reduce the amount of processing 2006 * mac80211 needs to do and the amount of CPU wakeups, so you should 2007 * honour this flag if possible. 2008 * 2009 * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS 2010 * is not set then only those addressed to this station. 2011 * 2012 * @FIF_OTHER_BSS: pass frames destined to other BSSes 2013 * 2014 * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only 2015 * those addressed to this station. 2016 * 2017 * @FIF_PROBE_REQ: pass probe request frames 2018 */ 2019enum ieee80211_filter_flags { 2020 FIF_PROMISC_IN_BSS = 1<<0, 2021 FIF_ALLMULTI = 1<<1, 2022 FIF_FCSFAIL = 1<<2, 2023 FIF_PLCPFAIL = 1<<3, 2024 FIF_BCN_PRBRESP_PROMISC = 1<<4, 2025 FIF_CONTROL = 1<<5, 2026 FIF_OTHER_BSS = 1<<6, 2027 FIF_PSPOLL = 1<<7, 2028 FIF_PROBE_REQ = 1<<8, 2029}; 2030 2031/** 2032 * enum ieee80211_ampdu_mlme_action - A-MPDU actions 2033 * 2034 * These flags are used with the ampdu_action() callback in 2035 * &struct ieee80211_ops to indicate which action is needed. 2036 * 2037 * Note that drivers MUST be able to deal with a TX aggregation 2038 * session being stopped even before they OK'ed starting it by 2039 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer 2040 * might receive the addBA frame and send a delBA right away! 2041 * 2042 * @IEEE80211_AMPDU_RX_START: start RX aggregation 2043 * @IEEE80211_AMPDU_RX_STOP: stop RX aggregation 2044 * @IEEE80211_AMPDU_TX_START: start TX aggregation 2045 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational 2046 * @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting 2047 * queued packets, now unaggregated. After all packets are transmitted the 2048 * driver has to call ieee80211_stop_tx_ba_cb_irqsafe(). 2049 * @IEEE80211_AMPDU_TX_STOP_FLUSH: stop TX aggregation and flush all packets, 2050 * called when the station is removed. There's no need or reason to call 2051 * ieee80211_stop_tx_ba_cb_irqsafe() in this case as mac80211 assumes the 2052 * session is gone and removes the station. 2053 * @IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: called when TX aggregation is stopped 2054 * but the driver hasn't called ieee80211_stop_tx_ba_cb_irqsafe() yet and 2055 * now the connection is dropped and the station will be removed. Drivers 2056 * should clean up and drop remaining packets when this is called. 2057 */ 2058enum ieee80211_ampdu_mlme_action { 2059 IEEE80211_AMPDU_RX_START, 2060 IEEE80211_AMPDU_RX_STOP, 2061 IEEE80211_AMPDU_TX_START, 2062 IEEE80211_AMPDU_TX_STOP_CONT, 2063 IEEE80211_AMPDU_TX_STOP_FLUSH, 2064 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT, 2065 IEEE80211_AMPDU_TX_OPERATIONAL, 2066}; 2067 2068/** 2069 * enum ieee80211_frame_release_type - frame release reason 2070 * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll 2071 * @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to 2072 * frame received on trigger-enabled AC 2073 */ 2074enum ieee80211_frame_release_type { 2075 IEEE80211_FRAME_RELEASE_PSPOLL, 2076 IEEE80211_FRAME_RELEASE_UAPSD, 2077}; 2078 2079/** 2080 * enum ieee80211_rate_control_changed - flags to indicate what changed 2081 * 2082 * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit 2083 * to this station changed. 2084 * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed. 2085 * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer 2086 * changed (in IBSS mode) due to discovering more information about 2087 * the peer. 2088 */ 2089enum ieee80211_rate_control_changed { 2090 IEEE80211_RC_BW_CHANGED = BIT(0), 2091 IEEE80211_RC_SMPS_CHANGED = BIT(1), 2092 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 2093}; 2094 2095/** 2096 * struct ieee80211_ops - callbacks from mac80211 to the driver 2097 * 2098 * This structure contains various callbacks that the driver may 2099 * handle or, in some cases, must handle, for example to configure 2100 * the hardware to a new channel or to transmit a frame. 2101 * 2102 * @tx: Handler that 802.11 module calls for each transmitted frame. 2103 * skb contains the buffer starting from the IEEE 802.11 header. 2104 * The low-level driver should send the frame out based on 2105 * configuration in the TX control data. This handler should, 2106 * preferably, never fail and stop queues appropriately. 2107 * Must be atomic. 2108 * 2109 * @start: Called before the first netdevice attached to the hardware 2110 * is enabled. This should turn on the hardware and must turn on 2111 * frame reception (for possibly enabled monitor interfaces.) 2112 * Returns negative error codes, these may be seen in userspace, 2113 * or zero. 2114 * When the device is started it should not have a MAC address 2115 * to avoid acknowledging frames before a non-monitor device 2116 * is added. 2117 * Must be implemented and can sleep. 2118 * 2119 * @stop: Called after last netdevice attached to the hardware 2120 * is disabled. This should turn off the hardware (at least 2121 * it must turn off frame reception.) 2122 * May be called right after add_interface if that rejects 2123 * an interface. If you added any work onto the mac80211 workqueue 2124 * you should ensure to cancel it on this callback. 2125 * Must be implemented and can sleep. 2126 * 2127 * @suspend: Suspend the device; mac80211 itself will quiesce before and 2128 * stop transmitting and doing any other configuration, and then 2129 * ask the device to suspend. This is only invoked when WoWLAN is 2130 * configured, otherwise the device is deconfigured completely and 2131 * reconfigured at resume time. 2132 * The driver may also impose special conditions under which it 2133 * wants to use the "normal" suspend (deconfigure), say if it only 2134 * supports WoWLAN when the device is associated. In this case, it 2135 * must return 1 from this function. 2136 * 2137 * @resume: If WoWLAN was configured, this indicates that mac80211 is 2138 * now resuming its operation, after this the device must be fully 2139 * functional again. If this returns an error, the only way out is 2140 * to also unregister the device. If it returns 1, then mac80211 2141 * will also go through the regular complete restart on resume. 2142 * 2143 * @set_wakeup: Enable or disable wakeup when WoWLAN configuration is 2144 * modified. The reason is that device_set_wakeup_enable() is 2145 * supposed to be called when the configuration changes, not only 2146 * in suspend(). 2147 * 2148 * @add_interface: Called when a netdevice attached to the hardware is 2149 * enabled. Because it is not called for monitor mode devices, @start 2150 * and @stop must be implemented. 2151 * The driver should perform any initialization it needs before 2152 * the device can be enabled. The initial configuration for the 2153 * interface is given in the conf parameter. 2154 * The callback may refuse to add an interface by returning a 2155 * negative error code (which will be seen in userspace.) 2156 * Must be implemented and can sleep. 2157 * 2158 * @change_interface: Called when a netdevice changes type. This callback 2159 * is optional, but only if it is supported can interface types be 2160 * switched while the interface is UP. The callback may sleep. 2161 * Note that while an interface is being switched, it will not be 2162 * found by the interface iteration callbacks. 2163 * 2164 * @remove_interface: Notifies a driver that an interface is going down. 2165 * The @stop callback is called after this if it is the last interface 2166 * and no monitor interfaces are present. 2167 * When all interfaces are removed, the MAC address in the hardware 2168 * must be cleared so the device no longer acknowledges packets, 2169 * the mac_addr member of the conf structure is, however, set to the 2170 * MAC address of the device going away. 2171 * Hence, this callback must be implemented. It can sleep. 2172 * 2173 * @add_interface_debugfs: Drivers can use this callback to add debugfs files 2174 * when a vif is added to mac80211. This callback and 2175 * @remove_interface_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2176 * conditional. @remove_interface_debugfs must be provided for cleanup. 2177 * This callback can sleep. 2178 * 2179 * @remove_interface_debugfs: Remove the debugfs files which were added using 2180 * @add_interface_debugfs. This callback must remove all debugfs entries 2181 * that were added because mac80211 only removes interface debugfs when the 2182 * interface is destroyed, not when it is removed from the driver. 2183 * This callback can sleep. 2184 * 2185 * @config: Handler for configuration requests. IEEE 802.11 code calls this 2186 * function to change hardware configuration, e.g., channel. 2187 * This function should never fail but returns a negative error code 2188 * if it does. The callback can sleep. 2189 * 2190 * @bss_info_changed: Handler for configuration requests related to BSS 2191 * parameters that may vary during BSS's lifespan, and may affect low 2192 * level driver (e.g. assoc/disassoc status, erp parameters). 2193 * This function should not be used if no BSS has been set, unless 2194 * for association indication. The @changed parameter indicates which 2195 * of the bss parameters has changed when a call is made. The callback 2196 * can sleep. 2197 * 2198 * @prepare_multicast: Prepare for multicast filter configuration. 2199 * This callback is optional, and its return value is passed 2200 * to configure_filter(). This callback must be atomic. 2201 * 2202 * @configure_filter: Configure the device's RX filter. 2203 * See the section "Frame filtering" for more information. 2204 * This callback must be implemented and can sleep. 2205 * 2206 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit 2207 * must be set or cleared for a given STA. Must be atomic. 2208 * 2209 * @set_key: See the section "Hardware crypto acceleration" 2210 * This callback is only called between add_interface and 2211 * remove_interface calls, i.e. while the given virtual interface 2212 * is enabled. 2213 * Returns a negative error code if the key can't be added. 2214 * The callback can sleep. 2215 * 2216 * @update_tkip_key: See the section "Hardware crypto acceleration" 2217 * This callback will be called in the context of Rx. Called for drivers 2218 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. 2219 * The callback must be atomic. 2220 * 2221 * @set_rekey_data: If the device supports GTK rekeying, for example while the 2222 * host is suspended, it can assign this callback to retrieve the data 2223 * necessary to do GTK rekeying, this is the KEK, KCK and replay counter. 2224 * After rekeying was done it should (for example during resume) notify 2225 * userspace of the new replay counter using ieee80211_gtk_rekey_notify(). 2226 * 2227 * @set_default_unicast_key: Set the default (unicast) key index, useful for 2228 * WEP when the device sends data packets autonomously, e.g. for ARP 2229 * offloading. The index can be 0-3, or -1 for unsetting it. 2230 * 2231 * @hw_scan: Ask the hardware to service the scan request, no need to start 2232 * the scan state machine in stack. The scan must honour the channel 2233 * configuration done by the regulatory agent in the wiphy's 2234 * registered bands. The hardware (or the driver) needs to make sure 2235 * that power save is disabled. 2236 * The @req ie/ie_len members are rewritten by mac80211 to contain the 2237 * entire IEs after the SSID, so that drivers need not look at these 2238 * at all but just send them after the SSID -- mac80211 includes the 2239 * (extended) supported rates and HT information (where applicable). 2240 * When the scan finishes, ieee80211_scan_completed() must be called; 2241 * note that it also must be called when the scan cannot finish due to 2242 * any error unless this callback returned a negative error code. 2243 * The callback can sleep. 2244 * 2245 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan. 2246 * The driver should ask the hardware to cancel the scan (if possible), 2247 * but the scan will be completed only after the driver will call 2248 * ieee80211_scan_completed(). 2249 * This callback is needed for wowlan, to prevent enqueueing a new 2250 * scan_work after the low-level driver was already suspended. 2251 * The callback can sleep. 2252 * 2253 * @sched_scan_start: Ask the hardware to start scanning repeatedly at 2254 * specific intervals. The driver must call the 2255 * ieee80211_sched_scan_results() function whenever it finds results. 2256 * This process will continue until sched_scan_stop is called. 2257 * 2258 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan. 2259 * 2260 * @sw_scan_start: Notifier function that is called just before a software scan 2261 * is started. Can be NULL, if the driver doesn't need this notification. 2262 * The callback can sleep. 2263 * 2264 * @sw_scan_complete: Notifier function that is called just after a 2265 * software scan finished. Can be NULL, if the driver doesn't need 2266 * this notification. 2267 * The callback can sleep. 2268 * 2269 * @get_stats: Return low-level statistics. 2270 * Returns zero if statistics are available. 2271 * The callback can sleep. 2272 * 2273 * @get_tkip_seq: If your device implements TKIP encryption in hardware this 2274 * callback should be provided to read the TKIP transmit IVs (both IV32 2275 * and IV16) for the given key from hardware. 2276 * The callback must be atomic. 2277 * 2278 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this 2279 * if the device does fragmentation by itself; if this callback is 2280 * implemented then the stack will not do fragmentation. 2281 * The callback can sleep. 2282 * 2283 * @set_rts_threshold: Configuration of RTS threshold (if device needs it) 2284 * The callback can sleep. 2285 * 2286 * @sta_add: Notifies low level driver about addition of an associated station, 2287 * AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2288 * 2289 * @sta_remove: Notifies low level driver about removal of an associated 2290 * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2291 * 2292 * @sta_add_debugfs: Drivers can use this callback to add debugfs files 2293 * when a station is added to mac80211's station list. This callback 2294 * and @sta_remove_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2295 * conditional. This callback can sleep. 2296 * 2297 * @sta_remove_debugfs: Remove the debugfs files which were added using 2298 * @sta_add_debugfs. This callback can sleep. 2299 * 2300 * @sta_notify: Notifies low level driver about power state transition of an 2301 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating 2302 * in AP mode, this callback will not be called when the flag 2303 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. 2304 * 2305 * @sta_state: Notifies low level driver about state transition of a 2306 * station (which can be the AP, a client, IBSS/WDS/mesh peer etc.) 2307 * This callback is mutually exclusive with @sta_add/@sta_remove. 2308 * It must not fail for down transitions but may fail for transitions 2309 * up the list of states. 2310 * The callback can sleep. 2311 * 2312 * @sta_rc_update: Notifies the driver of changes to the bitrates that can be 2313 * used to transmit to the station. The changes are advertised with bits 2314 * from &enum ieee80211_rate_control_changed and the values are reflected 2315 * in the station data. This callback should only be used when the driver 2316 * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since 2317 * otherwise the rate control algorithm is notified directly. 2318 * Must be atomic. 2319 * 2320 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), 2321 * bursting) for a hardware TX queue. 2322 * Returns a negative error code on failure. 2323 * The callback can sleep. 2324 * 2325 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, 2326 * this is only used for IBSS mode BSSID merging and debugging. Is not a 2327 * required function. 2328 * The callback can sleep. 2329 * 2330 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. 2331 * Currently, this is only used for IBSS mode debugging. Is not a 2332 * required function. 2333 * The callback can sleep. 2334 * 2335 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize 2336 * with other STAs in the IBSS. This is only used in IBSS mode. This 2337 * function is optional if the firmware/hardware takes full care of 2338 * TSF synchronization. 2339 * The callback can sleep. 2340 * 2341 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. 2342 * This is needed only for IBSS mode and the result of this function is 2343 * used to determine whether to reply to Probe Requests. 2344 * Returns non-zero if this device sent the last beacon. 2345 * The callback can sleep. 2346 * 2347 * @ampdu_action: Perform a certain A-MPDU action 2348 * The RA/TID combination determines the destination and TID we want 2349 * the ampdu action to be performed for. The action is defined through 2350 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) 2351 * is the first frame we expect to perform the action on. Notice 2352 * that TX/RX_STOP can pass NULL for this parameter. 2353 * The @buf_size parameter is only valid when the action is set to 2354 * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder 2355 * buffer size (number of subframes) for this session -- the driver 2356 * may neither send aggregates containing more subframes than this 2357 * nor send aggregates in a way that lost frames would exceed the 2358 * buffer size. If just limiting the aggregate size, this would be 2359 * possible with a buf_size of 8: 2360 * - TX: 1.....7 2361 * - RX: 2....7 (lost frame #1) 2362 * - TX: 8..1... 2363 * which is invalid since #1 was now re-transmitted well past the 2364 * buffer size of 8. Correct ways to retransmit #1 would be: 2365 * - TX: 1 or 18 or 81 2366 * Even "189" would be wrong since 1 could be lost again. 2367 * 2368 * Returns a negative error code on failure. 2369 * The callback can sleep. 2370 * 2371 * @get_survey: Return per-channel survey information 2372 * 2373 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also 2374 * need to set wiphy->rfkill_poll to %true before registration, 2375 * and need to call wiphy_rfkill_set_hw_state() in the callback. 2376 * The callback can sleep. 2377 * 2378 * @set_coverage_class: Set slot time for given coverage class as specified 2379 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout 2380 * accordingly. This callback is not required and may sleep. 2381 * 2382 * @testmode_cmd: Implement a cfg80211 test mode command. 2383 * The callback can sleep. 2384 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep. 2385 * 2386 * @flush: Flush all pending frames from the hardware queue, making sure 2387 * that the hardware queues are empty. If the parameter @drop is set 2388 * to %true, pending frames may be dropped. The callback can sleep. 2389 * 2390 * @channel_switch: Drivers that need (or want) to offload the channel 2391 * switch operation for CSAs received from the AP may implement this 2392 * callback. They must then call ieee80211_chswitch_done() to indicate 2393 * completion of the channel switch. 2394 * 2395 * @napi_poll: Poll Rx queue for incoming data frames. 2396 * 2397 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2398 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2399 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2400 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2401 * 2402 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2403 * 2404 * @remain_on_channel: Starts an off-channel period on the given channel, must 2405 * call back to ieee80211_ready_on_channel() when on that channel. Note 2406 * that normal channel traffic is not stopped as this is intended for hw 2407 * offload. Frames to transmit on the off-channel channel are transmitted 2408 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the 2409 * duration (which will always be non-zero) expires, the driver must call 2410 * ieee80211_remain_on_channel_expired(). 2411 * Note that this callback may be called while the device is in IDLE and 2412 * must be accepted in this case. 2413 * This callback may sleep. 2414 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is 2415 * aborted before it expires. This callback may sleep. 2416 * 2417 * @set_ringparam: Set tx and rx ring sizes. 2418 * 2419 * @get_ringparam: Get tx and rx ring current and maximum sizes. 2420 * 2421 * @tx_frames_pending: Check if there is any pending frame in the hardware 2422 * queues before entering power save. 2423 * 2424 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection 2425 * when transmitting a frame. Currently only legacy rates are handled. 2426 * The callback can sleep. 2427 * @rssi_callback: Notify driver when the average RSSI goes above/below 2428 * thresholds that were registered previously. The callback can sleep. 2429 * 2430 * @release_buffered_frames: Release buffered frames according to the given 2431 * parameters. In the case where the driver buffers some frames for 2432 * sleeping stations mac80211 will use this callback to tell the driver 2433 * to release some frames, either for PS-poll or uAPSD. 2434 * Note that if the @more_data paramter is %false the driver must check 2435 * if there are more frames on the given TIDs, and if there are more than 2436 * the frames being released then it must still set the more-data bit in 2437 * the frame. If the @more_data parameter is %true, then of course the 2438 * more-data bit must always be set. 2439 * The @tids parameter tells the driver which TIDs to release frames 2440 * from, for PS-poll it will always have only a single bit set. 2441 * In the case this is used for a PS-poll initiated release, the 2442 * @num_frames parameter will always be 1 so code can be shared. In 2443 * this case the driver must also set %IEEE80211_TX_STATUS_EOSP flag 2444 * on the TX status (and must report TX status) so that the PS-poll 2445 * period is properly ended. This is used to avoid sending multiple 2446 * responses for a retried PS-poll frame. 2447 * In the case this is used for uAPSD, the @num_frames parameter may be 2448 * bigger than one, but the driver may send fewer frames (it must send 2449 * at least one, however). In this case it is also responsible for 2450 * setting the EOSP flag in the QoS header of the frames. Also, when the 2451 * service period ends, the driver must set %IEEE80211_TX_STATUS_EOSP 2452 * on the last frame in the SP. Alternatively, it may call the function 2453 * ieee80211_sta_eosp_irqsafe() to inform mac80211 of the end of the SP. 2454 * This callback must be atomic. 2455 * @allow_buffered_frames: Prepare device to allow the given number of frames 2456 * to go out to the given station. The frames will be sent by mac80211 2457 * via the usual TX path after this call. The TX information for frames 2458 * released will also have the %IEEE80211_TX_CTL_NO_PS_BUFFER flag set 2459 * and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case 2460 * frames from multiple TIDs are released and the driver might reorder 2461 * them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag 2462 * on the last frame and clear it on all others and also handle the EOSP 2463 * bit in the QoS header correctly. Alternatively, it can also call the 2464 * ieee80211_sta_eosp_irqsafe() function. 2465 * The @tids parameter is a bitmap and tells the driver which TIDs the 2466 * frames will be on; it will at most have two bits set. 2467 * This callback must be atomic. 2468 * 2469 * @get_et_sset_count: Ethtool API to get string-set count. 2470 * 2471 * @get_et_stats: Ethtool API to get a set of u64 stats. 2472 * 2473 * @get_et_strings: Ethtool API to get a set of strings to describe stats 2474 * and perhaps other supported types of ethtool data-sets. 2475 * 2476 * @get_rssi: Get current signal strength in dBm, the function is optional 2477 * and can sleep. 2478 * 2479 * @mgd_prepare_tx: Prepare for transmitting a management frame for association 2480 * before associated. In multi-channel scenarios, a virtual interface is 2481 * bound to a channel before it is associated, but as it isn't associated 2482 * yet it need not necessarily be given airtime, in particular since any 2483 * transmission to a P2P GO needs to be synchronized against the GO's 2484 * powersave state. mac80211 will call this function before transmitting a 2485 * management frame prior to having successfully associated to allow the 2486 * driver to give it channel time for the transmission, to get a response 2487 * and to be able to synchronize with the GO. 2488 * The callback will be called before each transmission and upon return 2489 * mac80211 will transmit the frame right away. 2490 * The callback is optional and can (should!) sleep. 2491 * 2492 * @add_chanctx: Notifies device driver about new channel context creation. 2493 * @remove_chanctx: Notifies device driver about channel context destruction. 2494 * @change_chanctx: Notifies device driver about channel context changes that 2495 * may happen when combining different virtual interfaces on the same 2496 * channel context with different settings 2497 * @assign_vif_chanctx: Notifies device driver about channel context being bound 2498 * to vif. Possible use is for hw queue remapping. 2499 * @unassign_vif_chanctx: Notifies device driver about channel context being 2500 * unbound from vif. 2501 * @start_ap: Start operation on the AP interface, this is called after all the 2502 * information in bss_conf is set and beacon can be retrieved. A channel 2503 * context is bound before this is called. Note that if the driver uses 2504 * software scan or ROC, this (and @stop_ap) isn't called when the AP is 2505 * just "paused" for scanning/ROC, which is indicated by the beacon being 2506 * disabled/enabled via @bss_info_changed. 2507 * @stop_ap: Stop operation on the AP interface. 2508 * 2509 * @restart_complete: Called after a call to ieee80211_restart_hw(), when the 2510 * reconfiguration has completed. This can help the driver implement the 2511 * reconfiguration step. Also called when reconfiguring because the 2512 * driver's resume function returned 1, as this is just like an "inline" 2513 * hardware restart. This callback may sleep. 2514 * 2515 * @ipv6_addr_change: IPv6 address assignment on the given interface changed. 2516 * Currently, this is only called for managed or P2P client interfaces. 2517 * This callback is optional; it must not sleep. 2518 */ 2519struct ieee80211_ops { 2520 void (*tx)(struct ieee80211_hw *hw, 2521 struct ieee80211_tx_control *control, 2522 struct sk_buff *skb); 2523 int (*start)(struct ieee80211_hw *hw); 2524 void (*stop)(struct ieee80211_hw *hw); 2525#ifdef CONFIG_PM 2526 int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan); 2527 int (*resume)(struct ieee80211_hw *hw); 2528 void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled); 2529#endif 2530 int (*add_interface)(struct ieee80211_hw *hw, 2531 struct ieee80211_vif *vif); 2532 int (*change_interface)(struct ieee80211_hw *hw, 2533 struct ieee80211_vif *vif, 2534 enum nl80211_iftype new_type, bool p2p); 2535 void (*remove_interface)(struct ieee80211_hw *hw, 2536 struct ieee80211_vif *vif); 2537 int (*config)(struct ieee80211_hw *hw, u32 changed); 2538 void (*bss_info_changed)(struct ieee80211_hw *hw, 2539 struct ieee80211_vif *vif, 2540 struct ieee80211_bss_conf *info, 2541 u32 changed); 2542 2543 int (*start_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2544 void (*stop_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2545 2546 u64 (*prepare_multicast)(struct ieee80211_hw *hw, 2547 struct netdev_hw_addr_list *mc_list); 2548 void (*configure_filter)(struct ieee80211_hw *hw, 2549 unsigned int changed_flags, 2550 unsigned int *total_flags, 2551 u64 multicast); 2552 int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 2553 bool set); 2554 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2555 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2556 struct ieee80211_key_conf *key); 2557 void (*update_tkip_key)(struct ieee80211_hw *hw, 2558 struct ieee80211_vif *vif, 2559 struct ieee80211_key_conf *conf, 2560 struct ieee80211_sta *sta, 2561 u32 iv32, u16 *phase1key); 2562 void (*set_rekey_data)(struct ieee80211_hw *hw, 2563 struct ieee80211_vif *vif, 2564 struct cfg80211_gtk_rekey_data *data); 2565 void (*set_default_unicast_key)(struct ieee80211_hw *hw, 2566 struct ieee80211_vif *vif, int idx); 2567 int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2568 struct cfg80211_scan_request *req); 2569 void (*cancel_hw_scan)(struct ieee80211_hw *hw, 2570 struct ieee80211_vif *vif); 2571 int (*sched_scan_start)(struct ieee80211_hw *hw, 2572 struct ieee80211_vif *vif, 2573 struct cfg80211_sched_scan_request *req, 2574 struct ieee80211_sched_scan_ies *ies); 2575 void (*sched_scan_stop)(struct ieee80211_hw *hw, 2576 struct ieee80211_vif *vif); 2577 void (*sw_scan_start)(struct ieee80211_hw *hw); 2578 void (*sw_scan_complete)(struct ieee80211_hw *hw); 2579 int (*get_stats)(struct ieee80211_hw *hw, 2580 struct ieee80211_low_level_stats *stats); 2581 void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, 2582 u32 *iv32, u16 *iv16); 2583 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); 2584 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); 2585 int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2586 struct ieee80211_sta *sta); 2587 int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2588 struct ieee80211_sta *sta); 2589#ifdef CONFIG_MAC80211_DEBUGFS 2590 void (*sta_add_debugfs)(struct ieee80211_hw *hw, 2591 struct ieee80211_vif *vif, 2592 struct ieee80211_sta *sta, 2593 struct dentry *dir); 2594 void (*sta_remove_debugfs)(struct ieee80211_hw *hw, 2595 struct ieee80211_vif *vif, 2596 struct ieee80211_sta *sta, 2597 struct dentry *dir); 2598 void (*add_interface_debugfs)(struct ieee80211_hw *hw, 2599 struct ieee80211_vif *vif, 2600 struct dentry *dir); 2601 void (*remove_interface_debugfs)(struct ieee80211_hw *hw, 2602 struct ieee80211_vif *vif, 2603 struct dentry *dir); 2604#endif 2605 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2606 enum sta_notify_cmd, struct ieee80211_sta *sta); 2607 int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2608 struct ieee80211_sta *sta, 2609 enum ieee80211_sta_state old_state, 2610 enum ieee80211_sta_state new_state); 2611 void (*sta_rc_update)(struct ieee80211_hw *hw, 2612 struct ieee80211_vif *vif, 2613 struct ieee80211_sta *sta, 2614 u32 changed); 2615 int (*conf_tx)(struct ieee80211_hw *hw, 2616 struct ieee80211_vif *vif, u16 ac, 2617 const struct ieee80211_tx_queue_params *params); 2618 u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2619 void (*set_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2620 u64 tsf); 2621 void (*reset_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2622 int (*tx_last_beacon)(struct ieee80211_hw *hw); 2623 int (*ampdu_action)(struct ieee80211_hw *hw, 2624 struct ieee80211_vif *vif, 2625 enum ieee80211_ampdu_mlme_action action, 2626 struct ieee80211_sta *sta, u16 tid, u16 *ssn, 2627 u8 buf_size); 2628 int (*get_survey)(struct ieee80211_hw *hw, int idx, 2629 struct survey_info *survey); 2630 void (*rfkill_poll)(struct ieee80211_hw *hw); 2631 void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); 2632#ifdef CONFIG_NL80211_TESTMODE 2633 int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); 2634 int (*testmode_dump)(struct ieee80211_hw *hw, struct sk_buff *skb, 2635 struct netlink_callback *cb, 2636 void *data, int len); 2637#endif 2638 void (*flush)(struct ieee80211_hw *hw, bool drop); 2639 void (*channel_switch)(struct ieee80211_hw *hw, 2640 struct ieee80211_channel_switch *ch_switch); 2641 int (*napi_poll)(struct ieee80211_hw *hw, int budget); 2642 int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); 2643 int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); 2644 2645 int (*remain_on_channel)(struct ieee80211_hw *hw, 2646 struct ieee80211_vif *vif, 2647 struct ieee80211_channel *chan, 2648 int duration); 2649 int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); 2650 int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); 2651 void (*get_ringparam)(struct ieee80211_hw *hw, 2652 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 2653 bool (*tx_frames_pending)(struct ieee80211_hw *hw); 2654 int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2655 const struct cfg80211_bitrate_mask *mask); 2656 void (*rssi_callback)(struct ieee80211_hw *hw, 2657 struct ieee80211_vif *vif, 2658 enum ieee80211_rssi_event rssi_event); 2659 2660 void (*allow_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 void (*release_buffered_frames)(struct ieee80211_hw *hw, 2666 struct ieee80211_sta *sta, 2667 u16 tids, int num_frames, 2668 enum ieee80211_frame_release_type reason, 2669 bool more_data); 2670 2671 int (*get_et_sset_count)(struct ieee80211_hw *hw, 2672 struct ieee80211_vif *vif, int sset); 2673 void (*get_et_stats)(struct ieee80211_hw *hw, 2674 struct ieee80211_vif *vif, 2675 struct ethtool_stats *stats, u64 *data); 2676 void (*get_et_strings)(struct ieee80211_hw *hw, 2677 struct ieee80211_vif *vif, 2678 u32 sset, u8 *data); 2679 int (*get_rssi)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2680 struct ieee80211_sta *sta, s8 *rssi_dbm); 2681 2682 void (*mgd_prepare_tx)(struct ieee80211_hw *hw, 2683 struct ieee80211_vif *vif); 2684 2685 int (*add_chanctx)(struct ieee80211_hw *hw, 2686 struct ieee80211_chanctx_conf *ctx); 2687 void (*remove_chanctx)(struct ieee80211_hw *hw, 2688 struct ieee80211_chanctx_conf *ctx); 2689 void (*change_chanctx)(struct ieee80211_hw *hw, 2690 struct ieee80211_chanctx_conf *ctx, 2691 u32 changed); 2692 int (*assign_vif_chanctx)(struct ieee80211_hw *hw, 2693 struct ieee80211_vif *vif, 2694 struct ieee80211_chanctx_conf *ctx); 2695 void (*unassign_vif_chanctx)(struct ieee80211_hw *hw, 2696 struct ieee80211_vif *vif, 2697 struct ieee80211_chanctx_conf *ctx); 2698 2699 void (*restart_complete)(struct ieee80211_hw *hw); 2700 2701#if IS_ENABLED(CONFIG_IPV6) 2702 void (*ipv6_addr_change)(struct ieee80211_hw *hw, 2703 struct ieee80211_vif *vif, 2704 struct inet6_dev *idev); 2705#endif 2706}; 2707 2708/** 2709 * ieee80211_alloc_hw - Allocate a new hardware device 2710 * 2711 * This must be called once for each hardware device. The returned pointer 2712 * must be used to refer to this device when calling other functions. 2713 * mac80211 allocates a private data area for the driver pointed to by 2714 * @priv in &struct ieee80211_hw, the size of this area is given as 2715 * @priv_data_len. 2716 * 2717 * @priv_data_len: length of private data 2718 * @ops: callbacks for this device 2719 * 2720 * Return: A pointer to the new hardware device, or %NULL on error. 2721 */ 2722struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, 2723 const struct ieee80211_ops *ops); 2724 2725/** 2726 * ieee80211_register_hw - Register hardware device 2727 * 2728 * You must call this function before any other functions in 2729 * mac80211. Note that before a hardware can be registered, you 2730 * need to fill the contained wiphy's information. 2731 * 2732 * @hw: the device to register as returned by ieee80211_alloc_hw() 2733 * 2734 * Return: 0 on success. An error code otherwise. 2735 */ 2736int ieee80211_register_hw(struct ieee80211_hw *hw); 2737 2738/** 2739 * struct ieee80211_tpt_blink - throughput blink description 2740 * @throughput: throughput in Kbit/sec 2741 * @blink_time: blink time in milliseconds 2742 * (full cycle, ie. one off + one on period) 2743 */ 2744struct ieee80211_tpt_blink { 2745 int throughput; 2746 int blink_time; 2747}; 2748 2749/** 2750 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags 2751 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio 2752 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working 2753 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one 2754 * interface is connected in some way, including being an AP 2755 */ 2756enum ieee80211_tpt_led_trigger_flags { 2757 IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), 2758 IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), 2759 IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), 2760}; 2761 2762#ifdef CONFIG_MAC80211_LEDS 2763extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); 2764extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); 2765extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); 2766extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); 2767extern char *__ieee80211_create_tpt_led_trigger( 2768 struct ieee80211_hw *hw, unsigned int flags, 2769 const struct ieee80211_tpt_blink *blink_table, 2770 unsigned int blink_table_len); 2771#endif 2772/** 2773 * ieee80211_get_tx_led_name - get name of TX LED 2774 * 2775 * mac80211 creates a transmit LED trigger for each wireless hardware 2776 * that can be used to drive LEDs if your driver registers a LED device. 2777 * This function returns the name (or %NULL if not configured for LEDs) 2778 * of the trigger so you can automatically link the LED device. 2779 * 2780 * @hw: the hardware to get the LED trigger name for 2781 * 2782 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2783 */ 2784static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) 2785{ 2786#ifdef CONFIG_MAC80211_LEDS 2787 return __ieee80211_get_tx_led_name(hw); 2788#else 2789 return NULL; 2790#endif 2791} 2792 2793/** 2794 * ieee80211_get_rx_led_name - get name of RX LED 2795 * 2796 * mac80211 creates a receive LED trigger for each wireless hardware 2797 * that can be used to drive LEDs if your driver registers a LED device. 2798 * This function returns the name (or %NULL if not configured for LEDs) 2799 * of the trigger so you can automatically link the LED device. 2800 * 2801 * @hw: the hardware to get the LED trigger name for 2802 * 2803 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2804 */ 2805static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) 2806{ 2807#ifdef CONFIG_MAC80211_LEDS 2808 return __ieee80211_get_rx_led_name(hw); 2809#else 2810 return NULL; 2811#endif 2812} 2813 2814/** 2815 * ieee80211_get_assoc_led_name - get name of association LED 2816 * 2817 * mac80211 creates a association LED trigger for each wireless hardware 2818 * that can be used to drive LEDs if your driver registers a LED device. 2819 * This function returns the name (or %NULL if not configured for LEDs) 2820 * of the trigger so you can automatically link the LED device. 2821 * 2822 * @hw: the hardware to get the LED trigger name for 2823 * 2824 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2825 */ 2826static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) 2827{ 2828#ifdef CONFIG_MAC80211_LEDS 2829 return __ieee80211_get_assoc_led_name(hw); 2830#else 2831 return NULL; 2832#endif 2833} 2834 2835/** 2836 * ieee80211_get_radio_led_name - get name of radio LED 2837 * 2838 * mac80211 creates a radio change LED trigger for each wireless hardware 2839 * that can be used to drive LEDs if your driver registers a LED device. 2840 * This function returns the name (or %NULL if not configured for LEDs) 2841 * of the trigger so you can automatically link the LED device. 2842 * 2843 * @hw: the hardware to get the LED trigger name for 2844 * 2845 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2846 */ 2847static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) 2848{ 2849#ifdef CONFIG_MAC80211_LEDS 2850 return __ieee80211_get_radio_led_name(hw); 2851#else 2852 return NULL; 2853#endif 2854} 2855 2856/** 2857 * ieee80211_create_tpt_led_trigger - create throughput LED trigger 2858 * @hw: the hardware to create the trigger for 2859 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags 2860 * @blink_table: the blink table -- needs to be ordered by throughput 2861 * @blink_table_len: size of the blink table 2862 * 2863 * Return: %NULL (in case of error, or if no LED triggers are 2864 * configured) or the name of the new trigger. 2865 * 2866 * Note: This function must be called before ieee80211_register_hw(). 2867 */ 2868static inline char * 2869ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, 2870 const struct ieee80211_tpt_blink *blink_table, 2871 unsigned int blink_table_len) 2872{ 2873#ifdef CONFIG_MAC80211_LEDS 2874 return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, 2875 blink_table_len); 2876#else 2877 return NULL; 2878#endif 2879} 2880 2881/** 2882 * ieee80211_unregister_hw - Unregister a hardware device 2883 * 2884 * This function instructs mac80211 to free allocated resources 2885 * and unregister netdevices from the networking subsystem. 2886 * 2887 * @hw: the hardware to unregister 2888 */ 2889void ieee80211_unregister_hw(struct ieee80211_hw *hw); 2890 2891/** 2892 * ieee80211_free_hw - free hardware descriptor 2893 * 2894 * This function frees everything that was allocated, including the 2895 * private data for the driver. You must call ieee80211_unregister_hw() 2896 * before calling this function. 2897 * 2898 * @hw: the hardware to free 2899 */ 2900void ieee80211_free_hw(struct ieee80211_hw *hw); 2901 2902/** 2903 * ieee80211_restart_hw - restart hardware completely 2904 * 2905 * Call this function when the hardware was restarted for some reason 2906 * (hardware error, ...) and the driver is unable to restore its state 2907 * by itself. mac80211 assumes that at this point the driver/hardware 2908 * is completely uninitialised and stopped, it starts the process by 2909 * calling the ->start() operation. The driver will need to reset all 2910 * internal state that it has prior to calling this function. 2911 * 2912 * @hw: the hardware to restart 2913 */ 2914void ieee80211_restart_hw(struct ieee80211_hw *hw); 2915 2916/** ieee80211_napi_schedule - schedule NAPI poll 2917 * 2918 * Use this function to schedule NAPI polling on a device. 2919 * 2920 * @hw: the hardware to start polling 2921 */ 2922void ieee80211_napi_schedule(struct ieee80211_hw *hw); 2923 2924/** ieee80211_napi_complete - complete NAPI polling 2925 * 2926 * Use this function to finish NAPI polling on a device. 2927 * 2928 * @hw: the hardware to stop polling 2929 */ 2930void ieee80211_napi_complete(struct ieee80211_hw *hw); 2931 2932/** 2933 * ieee80211_rx - receive frame 2934 * 2935 * Use this function to hand received frames to mac80211. The receive 2936 * buffer in @skb must start with an IEEE 802.11 header. In case of a 2937 * paged @skb is used, the driver is recommended to put the ieee80211 2938 * header of the frame on the linear part of the @skb to avoid memory 2939 * allocation and/or memcpy by the stack. 2940 * 2941 * This function may not be called in IRQ context. Calls to this function 2942 * for a single hardware must be synchronized against each other. Calls to 2943 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 2944 * mixed for a single hardware. 2945 * 2946 * In process context use instead ieee80211_rx_ni(). 2947 * 2948 * @hw: the hardware this frame came in on 2949 * @skb: the buffer to receive, owned by mac80211 after this call 2950 */ 2951void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); 2952 2953/** 2954 * ieee80211_rx_irqsafe - receive frame 2955 * 2956 * Like ieee80211_rx() but can be called in IRQ context 2957 * (internally defers to a tasklet.) 2958 * 2959 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not 2960 * be mixed for a single hardware. 2961 * 2962 * @hw: the hardware this frame came in on 2963 * @skb: the buffer to receive, owned by mac80211 after this call 2964 */ 2965void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); 2966 2967/** 2968 * ieee80211_rx_ni - receive frame (in process context) 2969 * 2970 * Like ieee80211_rx() but can be called in process context 2971 * (internally disables bottom halves). 2972 * 2973 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may 2974 * not be mixed for a single hardware. 2975 * 2976 * @hw: the hardware this frame came in on 2977 * @skb: the buffer to receive, owned by mac80211 after this call 2978 */ 2979static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, 2980 struct sk_buff *skb) 2981{ 2982 local_bh_disable(); 2983 ieee80211_rx(hw, skb); 2984 local_bh_enable(); 2985} 2986 2987/** 2988 * ieee80211_sta_ps_transition - PS transition for connected sta 2989 * 2990 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS 2991 * flag set, use this function to inform mac80211 about a connected station 2992 * entering/leaving PS mode. 2993 * 2994 * This function may not be called in IRQ context or with softirqs enabled. 2995 * 2996 * Calls to this function for a single hardware must be synchronized against 2997 * each other. 2998 * 2999 * @sta: currently connected sta 3000 * @start: start or stop PS 3001 * 3002 * Return: 0 on success. -EINVAL when the requested PS mode is already set. 3003 */ 3004int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); 3005 3006/** 3007 * ieee80211_sta_ps_transition_ni - PS transition for connected sta 3008 * (in process context) 3009 * 3010 * Like ieee80211_sta_ps_transition() but can be called in process context 3011 * (internally disables bottom halves). Concurrent call restriction still 3012 * applies. 3013 * 3014 * @sta: currently connected sta 3015 * @start: start or stop PS 3016 * 3017 * Return: Like ieee80211_sta_ps_transition(). 3018 */ 3019static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, 3020 bool start) 3021{ 3022 int ret; 3023 3024 local_bh_disable(); 3025 ret = ieee80211_sta_ps_transition(sta, start); 3026 local_bh_enable(); 3027 3028 return ret; 3029} 3030 3031/* 3032 * The TX headroom reserved by mac80211 for its own tx_status functions. 3033 * This is enough for the radiotap header. 3034 */ 3035#define IEEE80211_TX_STATUS_HEADROOM 14 3036 3037/** 3038 * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames 3039 * @sta: &struct ieee80211_sta pointer for the sleeping station 3040 * @tid: the TID that has buffered frames 3041 * @buffered: indicates whether or not frames are buffered for this TID 3042 * 3043 * If a driver buffers frames for a powersave station instead of passing 3044 * them back to mac80211 for retransmission, the station may still need 3045 * to be told that there are buffered frames via the TIM bit. 3046 * 3047 * This function informs mac80211 whether or not there are frames that are 3048 * buffered in the driver for a given TID; mac80211 can then use this data 3049 * to set the TIM bit (NOTE: This may call back into the driver's set_tim 3050 * call! Beware of the locking!) 3051 * 3052 * If all frames are released to the station (due to PS-poll or uAPSD) 3053 * then the driver needs to inform mac80211 that there no longer are 3054 * frames buffered. However, when the station wakes up mac80211 assumes 3055 * that all buffered frames will be transmitted and clears this data, 3056 * drivers need to make sure they inform mac80211 about all buffered 3057 * frames on the sleep transition (sta_notify() with %STA_NOTIFY_SLEEP). 3058 * 3059 * Note that technically mac80211 only needs to know this per AC, not per 3060 * TID, but since driver buffering will inevitably happen per TID (since 3061 * it is related to aggregation) it is easier to make mac80211 map the 3062 * TID to the AC as required instead of keeping track in all drivers that 3063 * use this API. 3064 */ 3065void ieee80211_sta_set_buffered(struct ieee80211_sta *sta, 3066 u8 tid, bool buffered); 3067 3068/** 3069 * ieee80211_tx_status - transmit status callback 3070 * 3071 * Call this function for all transmitted frames after they have been 3072 * transmitted. It is permissible to not call this function for 3073 * multicast frames but this can affect statistics. 3074 * 3075 * This function may not be called in IRQ context. Calls to this function 3076 * for a single hardware must be synchronized against each other. Calls 3077 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() 3078 * may not be mixed for a single hardware. 3079 * 3080 * @hw: the hardware the frame was transmitted by 3081 * @skb: the frame that was transmitted, owned by mac80211 after this call 3082 */ 3083void ieee80211_tx_status(struct ieee80211_hw *hw, 3084 struct sk_buff *skb); 3085 3086/** 3087 * ieee80211_tx_status_ni - transmit status callback (in process context) 3088 * 3089 * Like ieee80211_tx_status() but can be called in process context. 3090 * 3091 * Calls to this function, ieee80211_tx_status() and 3092 * ieee80211_tx_status_irqsafe() may not be mixed 3093 * for a single hardware. 3094 * 3095 * @hw: the hardware the frame was transmitted by 3096 * @skb: the frame that was transmitted, owned by mac80211 after this call 3097 */ 3098static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, 3099 struct sk_buff *skb) 3100{ 3101 local_bh_disable(); 3102 ieee80211_tx_status(hw, skb); 3103 local_bh_enable(); 3104} 3105 3106/** 3107 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback 3108 * 3109 * Like ieee80211_tx_status() but can be called in IRQ context 3110 * (internally defers to a tasklet.) 3111 * 3112 * Calls to this function, ieee80211_tx_status() and 3113 * ieee80211_tx_status_ni() may not be mixed for a single hardware. 3114 * 3115 * @hw: the hardware the frame was transmitted by 3116 * @skb: the frame that was transmitted, owned by mac80211 after this call 3117 */ 3118void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, 3119 struct sk_buff *skb); 3120 3121/** 3122 * ieee80211_report_low_ack - report non-responding station 3123 * 3124 * When operating in AP-mode, call this function to report a non-responding 3125 * connected STA. 3126 * 3127 * @sta: the non-responding connected sta 3128 * @num_packets: number of packets sent to @sta without a response 3129 */ 3130void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets); 3131 3132/** 3133 * ieee80211_beacon_get_tim - beacon generation function 3134 * @hw: pointer obtained from ieee80211_alloc_hw(). 3135 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3136 * @tim_offset: pointer to variable that will receive the TIM IE offset. 3137 * Set to 0 if invalid (in non-AP modes). 3138 * @tim_length: pointer to variable that will receive the TIM IE length, 3139 * (including the ID and length bytes!). 3140 * Set to 0 if invalid (in non-AP modes). 3141 * 3142 * If the driver implements beaconing modes, it must use this function to 3143 * obtain the beacon frame/template. 3144 * 3145 * If the beacon frames are generated by the host system (i.e., not in 3146 * hardware/firmware), the driver uses this function to get each beacon 3147 * frame from mac80211 -- it is responsible for calling this function 3148 * before the beacon is needed (e.g. based on hardware interrupt). 3149 * 3150 * If the beacon frames are generated by the device, then the driver 3151 * must use the returned beacon as the template and change the TIM IE 3152 * according to the current DTIM parameters/TIM bitmap. 3153 * 3154 * The driver is responsible for freeing the returned skb. 3155 * 3156 * Return: The beacon template. %NULL on error. 3157 */ 3158struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 3159 struct ieee80211_vif *vif, 3160 u16 *tim_offset, u16 *tim_length); 3161 3162/** 3163 * ieee80211_beacon_get - beacon generation function 3164 * @hw: pointer obtained from ieee80211_alloc_hw(). 3165 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3166 * 3167 * See ieee80211_beacon_get_tim(). 3168 * 3169 * Return: See ieee80211_beacon_get_tim(). 3170 */ 3171static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, 3172 struct ieee80211_vif *vif) 3173{ 3174 return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); 3175} 3176 3177/** 3178 * ieee80211_proberesp_get - retrieve a Probe Response template 3179 * @hw: pointer obtained from ieee80211_alloc_hw(). 3180 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3181 * 3182 * Creates a Probe Response template which can, for example, be uploaded to 3183 * hardware. The destination address should be set by the caller. 3184 * 3185 * Can only be called in AP mode. 3186 * 3187 * Return: The Probe Response template. %NULL on error. 3188 */ 3189struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw, 3190 struct ieee80211_vif *vif); 3191 3192/** 3193 * ieee80211_pspoll_get - retrieve a PS Poll template 3194 * @hw: pointer obtained from ieee80211_alloc_hw(). 3195 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3196 * 3197 * Creates a PS Poll a template which can, for example, uploaded to 3198 * hardware. The template must be updated after association so that correct 3199 * AID, BSSID and MAC address is used. 3200 * 3201 * Note: Caller (or hardware) is responsible for setting the 3202 * &IEEE80211_FCTL_PM bit. 3203 * 3204 * Return: The PS Poll template. %NULL on error. 3205 */ 3206struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, 3207 struct ieee80211_vif *vif); 3208 3209/** 3210 * ieee80211_nullfunc_get - retrieve a nullfunc template 3211 * @hw: pointer obtained from ieee80211_alloc_hw(). 3212 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3213 * 3214 * Creates a Nullfunc template which can, for example, uploaded to 3215 * hardware. The template must be updated after association so that correct 3216 * BSSID and address is used. 3217 * 3218 * Note: Caller (or hardware) is responsible for setting the 3219 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. 3220 * 3221 * Return: The nullfunc template. %NULL on error. 3222 */ 3223struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, 3224 struct ieee80211_vif *vif); 3225 3226/** 3227 * ieee80211_probereq_get - retrieve a Probe Request template 3228 * @hw: pointer obtained from ieee80211_alloc_hw(). 3229 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3230 * @ssid: SSID buffer 3231 * @ssid_len: length of SSID 3232 * @tailroom: tailroom to reserve at end of SKB for IEs 3233 * 3234 * Creates a Probe Request template which can, for example, be uploaded to 3235 * hardware. 3236 * 3237 * Return: The Probe Request template. %NULL on error. 3238 */ 3239struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, 3240 struct ieee80211_vif *vif, 3241 const u8 *ssid, size_t ssid_len, 3242 size_t tailroom); 3243 3244/** 3245 * ieee80211_rts_get - RTS frame generation function 3246 * @hw: pointer obtained from ieee80211_alloc_hw(). 3247 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3248 * @frame: pointer to the frame that is going to be protected by the RTS. 3249 * @frame_len: the frame length (in octets). 3250 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3251 * @rts: The buffer where to store the RTS frame. 3252 * 3253 * If the RTS frames are generated by the host system (i.e., not in 3254 * hardware/firmware), the low-level driver uses this function to receive 3255 * the next RTS frame from the 802.11 code. The low-level is responsible 3256 * for calling this function before and RTS frame is needed. 3257 */ 3258void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3259 const void *frame, size_t frame_len, 3260 const struct ieee80211_tx_info *frame_txctl, 3261 struct ieee80211_rts *rts); 3262 3263/** 3264 * ieee80211_rts_duration - Get the duration field for an RTS frame 3265 * @hw: pointer obtained from ieee80211_alloc_hw(). 3266 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3267 * @frame_len: the length of the frame that is going to be protected by the RTS. 3268 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3269 * 3270 * If the RTS is generated in firmware, but the host system must provide 3271 * the duration field, the low-level driver uses this function to receive 3272 * the duration field value in little-endian byteorder. 3273 * 3274 * Return: The duration. 3275 */ 3276__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 3277 struct ieee80211_vif *vif, size_t frame_len, 3278 const struct ieee80211_tx_info *frame_txctl); 3279 3280/** 3281 * ieee80211_ctstoself_get - CTS-to-self frame generation function 3282 * @hw: pointer obtained from ieee80211_alloc_hw(). 3283 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3284 * @frame: pointer to the frame that is going to be protected by the CTS-to-self. 3285 * @frame_len: the frame length (in octets). 3286 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3287 * @cts: The buffer where to store the CTS-to-self frame. 3288 * 3289 * If the CTS-to-self frames are generated by the host system (i.e., not in 3290 * hardware/firmware), the low-level driver uses this function to receive 3291 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible 3292 * for calling this function before and CTS-to-self frame is needed. 3293 */ 3294void ieee80211_ctstoself_get(struct ieee80211_hw *hw, 3295 struct ieee80211_vif *vif, 3296 const void *frame, size_t frame_len, 3297 const struct ieee80211_tx_info *frame_txctl, 3298 struct ieee80211_cts *cts); 3299 3300/** 3301 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame 3302 * @hw: pointer obtained from ieee80211_alloc_hw(). 3303 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3304 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. 3305 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3306 * 3307 * If the CTS-to-self is generated in firmware, but the host system must provide 3308 * the duration field, the low-level driver uses this function to receive 3309 * the duration field value in little-endian byteorder. 3310 * 3311 * Return: The duration. 3312 */ 3313__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 3314 struct ieee80211_vif *vif, 3315 size_t frame_len, 3316 const struct ieee80211_tx_info *frame_txctl); 3317 3318/** 3319 * ieee80211_generic_frame_duration - Calculate the duration field for a frame 3320 * @hw: pointer obtained from ieee80211_alloc_hw(). 3321 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3322 * @band: the band to calculate the frame duration on 3323 * @frame_len: the length of the frame. 3324 * @rate: the rate at which the frame is going to be transmitted. 3325 * 3326 * Calculate the duration field of some generic frame, given its 3327 * length and transmission rate (in 100kbps). 3328 * 3329 * Return: The duration. 3330 */ 3331__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 3332 struct ieee80211_vif *vif, 3333 enum ieee80211_band band, 3334 size_t frame_len, 3335 struct ieee80211_rate *rate); 3336 3337/** 3338 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames 3339 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3340 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3341 * 3342 * Function for accessing buffered broadcast and multicast frames. If 3343 * hardware/firmware does not implement buffering of broadcast/multicast 3344 * frames when power saving is used, 802.11 code buffers them in the host 3345 * memory. The low-level driver uses this function to fetch next buffered 3346 * frame. In most cases, this is used when generating beacon frame. 3347 * 3348 * Return: A pointer to the next buffered skb or NULL if no more buffered 3349 * frames are available. 3350 * 3351 * Note: buffered frames are returned only after DTIM beacon frame was 3352 * generated with ieee80211_beacon_get() and the low-level driver must thus 3353 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns 3354 * NULL if the previous generated beacon was not DTIM, so the low-level driver 3355 * does not need to check for DTIM beacons separately and should be able to 3356 * use common code for all beacons. 3357 */ 3358struct sk_buff * 3359ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3360 3361/** 3362 * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32 3363 * 3364 * This function returns the TKIP phase 1 key for the given IV32. 3365 * 3366 * @keyconf: the parameter passed with the set key 3367 * @iv32: IV32 to get the P1K for 3368 * @p1k: a buffer to which the key will be written, as 5 u16 values 3369 */ 3370void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, 3371 u32 iv32, u16 *p1k); 3372 3373/** 3374 * ieee80211_get_tkip_p1k - get a TKIP phase 1 key 3375 * 3376 * This function returns the TKIP phase 1 key for the IV32 taken 3377 * from the given packet. 3378 * 3379 * @keyconf: the parameter passed with the set key 3380 * @skb: the packet to take the IV32 value from that will be encrypted 3381 * with this P1K 3382 * @p1k: a buffer to which the key will be written, as 5 u16 values 3383 */ 3384static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, 3385 struct sk_buff *skb, u16 *p1k) 3386{ 3387 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3388 const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); 3389 u32 iv32 = get_unaligned_le32(&data[4]); 3390 3391 ieee80211_get_tkip_p1k_iv(keyconf, iv32, p1k); 3392} 3393 3394/** 3395 * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX 3396 * 3397 * This function returns the TKIP phase 1 key for the given IV32 3398 * and transmitter address. 3399 * 3400 * @keyconf: the parameter passed with the set key 3401 * @ta: TA that will be used with the key 3402 * @iv32: IV32 to get the P1K for 3403 * @p1k: a buffer to which the key will be written, as 5 u16 values 3404 */ 3405void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, 3406 const u8 *ta, u32 iv32, u16 *p1k); 3407 3408/** 3409 * ieee80211_get_tkip_p2k - get a TKIP phase 2 key 3410 * 3411 * This function computes the TKIP RC4 key for the IV values 3412 * in the packet. 3413 * 3414 * @keyconf: the parameter passed with the set key 3415 * @skb: the packet to take the IV32/IV16 values from that will be 3416 * encrypted with this key 3417 * @p2k: a buffer to which the key will be written, 16 bytes 3418 */ 3419void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, 3420 struct sk_buff *skb, u8 *p2k); 3421 3422/** 3423 * ieee80211_aes_cmac_calculate_k1_k2 - calculate the AES-CMAC sub keys 3424 * 3425 * This function computes the two AES-CMAC sub-keys, based on the 3426 * previously installed master key. 3427 * 3428 * @keyconf: the parameter passed with the set key 3429 * @k1: a buffer to be filled with the 1st sub-key 3430 * @k2: a buffer to be filled with the 2nd sub-key 3431 */ 3432void ieee80211_aes_cmac_calculate_k1_k2(struct ieee80211_key_conf *keyconf, 3433 u8 *k1, u8 *k2); 3434 3435/** 3436 * struct ieee80211_key_seq - key sequence counter 3437 * 3438 * @tkip: TKIP data, containing IV32 and IV16 in host byte order 3439 * @ccmp: PN data, most significant byte first (big endian, 3440 * reverse order than in packet) 3441 * @aes_cmac: PN data, most significant byte first (big endian, 3442 * reverse order than in packet) 3443 */ 3444struct ieee80211_key_seq { 3445 union { 3446 struct { 3447 u32 iv32; 3448 u16 iv16; 3449 } tkip; 3450 struct { 3451 u8 pn[6]; 3452 } ccmp; 3453 struct { 3454 u8 pn[6]; 3455 } aes_cmac; 3456 }; 3457}; 3458 3459/** 3460 * ieee80211_get_key_tx_seq - get key TX sequence counter 3461 * 3462 * @keyconf: the parameter passed with the set key 3463 * @seq: buffer to receive the sequence data 3464 * 3465 * This function allows a driver to retrieve the current TX IV/PN 3466 * for the given key. It must not be called if IV generation is 3467 * offloaded to the device. 3468 * 3469 * Note that this function may only be called when no TX processing 3470 * can be done concurrently, for example when queues are stopped 3471 * and the stop has been synchronized. 3472 */ 3473void ieee80211_get_key_tx_seq(struct ieee80211_key_conf *keyconf, 3474 struct ieee80211_key_seq *seq); 3475 3476/** 3477 * ieee80211_get_key_rx_seq - get key RX sequence counter 3478 * 3479 * @keyconf: the parameter passed with the set key 3480 * @tid: The TID, or -1 for the management frame value (CCMP only); 3481 * the value on TID 0 is also used for non-QoS frames. For 3482 * CMAC, only TID 0 is valid. 3483 * @seq: buffer to receive the sequence data 3484 * 3485 * This function allows a driver to retrieve the current RX IV/PNs 3486 * for the given key. It must not be called if IV checking is done 3487 * by the device and not by mac80211. 3488 * 3489 * Note that this function may only be called when no RX processing 3490 * can be done concurrently. 3491 */ 3492void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf, 3493 int tid, struct ieee80211_key_seq *seq); 3494 3495/** 3496 * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying 3497 * @vif: virtual interface the rekeying was done on 3498 * @bssid: The BSSID of the AP, for checking association 3499 * @replay_ctr: the new replay counter after GTK rekeying 3500 * @gfp: allocation flags 3501 */ 3502void ieee80211_gtk_rekey_notify(struct ieee80211_vif *vif, const u8 *bssid, 3503 const u8 *replay_ctr, gfp_t gfp); 3504 3505/** 3506 * ieee80211_wake_queue - wake specific queue 3507 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3508 * @queue: queue number (counted from zero). 3509 * 3510 * Drivers should use this function instead of netif_wake_queue. 3511 */ 3512void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); 3513 3514/** 3515 * ieee80211_stop_queue - stop specific queue 3516 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3517 * @queue: queue number (counted from zero). 3518 * 3519 * Drivers should use this function instead of netif_stop_queue. 3520 */ 3521void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); 3522 3523/** 3524 * ieee80211_queue_stopped - test status of the queue 3525 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3526 * @queue: queue number (counted from zero). 3527 * 3528 * Drivers should use this function instead of netif_stop_queue. 3529 * 3530 * Return: %true if the queue is stopped. %false otherwise. 3531 */ 3532 3533int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); 3534 3535/** 3536 * ieee80211_stop_queues - stop all queues 3537 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3538 * 3539 * Drivers should use this function instead of netif_stop_queue. 3540 */ 3541void ieee80211_stop_queues(struct ieee80211_hw *hw); 3542 3543/** 3544 * ieee80211_wake_queues - wake all queues 3545 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3546 * 3547 * Drivers should use this function instead of netif_wake_queue. 3548 */ 3549void ieee80211_wake_queues(struct ieee80211_hw *hw); 3550 3551/** 3552 * ieee80211_scan_completed - completed hardware scan 3553 * 3554 * When hardware scan offload is used (i.e. the hw_scan() callback is 3555 * assigned) this function needs to be called by the driver to notify 3556 * mac80211 that the scan finished. This function can be called from 3557 * any context, including hardirq context. 3558 * 3559 * @hw: the hardware that finished the scan 3560 * @aborted: set to true if scan was aborted 3561 */ 3562void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); 3563 3564/** 3565 * ieee80211_sched_scan_results - got results from scheduled scan 3566 * 3567 * When a scheduled scan is running, this function needs to be called by the 3568 * driver whenever there are new scan results available. 3569 * 3570 * @hw: the hardware that is performing scheduled scans 3571 */ 3572void ieee80211_sched_scan_results(struct ieee80211_hw *hw); 3573 3574/** 3575 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped 3576 * 3577 * When a scheduled scan is running, this function can be called by 3578 * the driver if it needs to stop the scan to perform another task. 3579 * Usual scenarios are drivers that cannot continue the scheduled scan 3580 * while associating, for instance. 3581 * 3582 * @hw: the hardware that is performing scheduled scans 3583 */ 3584void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw); 3585 3586/** 3587 * enum ieee80211_interface_iteration_flags - interface iteration flags 3588 * @IEEE80211_IFACE_ITER_NORMAL: Iterate over all interfaces that have 3589 * been added to the driver; However, note that during hardware 3590 * reconfiguration (after restart_hw) it will iterate over a new 3591 * interface and over all the existing interfaces even if they 3592 * haven't been re-added to the driver yet. 3593 * @IEEE80211_IFACE_ITER_RESUME_ALL: During resume, iterate over all 3594 * interfaces, even if they haven't been re-added to the driver yet. 3595 */ 3596enum ieee80211_interface_iteration_flags { 3597 IEEE80211_IFACE_ITER_NORMAL = 0, 3598 IEEE80211_IFACE_ITER_RESUME_ALL = BIT(0), 3599}; 3600 3601/** 3602 * ieee80211_iterate_active_interfaces - iterate active interfaces 3603 * 3604 * This function iterates over the interfaces associated with a given 3605 * hardware that are currently active and calls the callback for them. 3606 * This function allows the iterator function to sleep, when the iterator 3607 * function is atomic @ieee80211_iterate_active_interfaces_atomic can 3608 * be used. 3609 * Does not iterate over a new interface during add_interface(). 3610 * 3611 * @hw: the hardware struct of which the interfaces should be iterated over 3612 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3613 * @iterator: the iterator function to call 3614 * @data: first argument of the iterator function 3615 */ 3616void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, 3617 u32 iter_flags, 3618 void (*iterator)(void *data, u8 *mac, 3619 struct ieee80211_vif *vif), 3620 void *data); 3621 3622/** 3623 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces 3624 * 3625 * This function iterates over the interfaces associated with a given 3626 * hardware that are currently active and calls the callback for them. 3627 * This function requires the iterator callback function to be atomic, 3628 * if that is not desired, use @ieee80211_iterate_active_interfaces instead. 3629 * Does not iterate over a new interface during add_interface(). 3630 * 3631 * @hw: the hardware struct of which the interfaces should be iterated over 3632 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3633 * @iterator: the iterator function to call, cannot sleep 3634 * @data: first argument of the iterator function 3635 */ 3636void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, 3637 u32 iter_flags, 3638 void (*iterator)(void *data, 3639 u8 *mac, 3640 struct ieee80211_vif *vif), 3641 void *data); 3642 3643/** 3644 * ieee80211_queue_work - add work onto the mac80211 workqueue 3645 * 3646 * Drivers and mac80211 use this to add work onto the mac80211 workqueue. 3647 * This helper ensures drivers are not queueing work when they should not be. 3648 * 3649 * @hw: the hardware struct for the interface we are adding work for 3650 * @work: the work we want to add onto the mac80211 workqueue 3651 */ 3652void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); 3653 3654/** 3655 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue 3656 * 3657 * Drivers and mac80211 use this to queue delayed work onto the mac80211 3658 * workqueue. 3659 * 3660 * @hw: the hardware struct for the interface we are adding work for 3661 * @dwork: delayable work to queue onto the mac80211 workqueue 3662 * @delay: number of jiffies to wait before queueing 3663 */ 3664void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 3665 struct delayed_work *dwork, 3666 unsigned long delay); 3667 3668/** 3669 * ieee80211_start_tx_ba_session - Start a tx Block Ack session. 3670 * @sta: the station for which to start a BA session 3671 * @tid: the TID to BA on. 3672 * @timeout: session timeout value (in TUs) 3673 * 3674 * Return: success if addBA request was sent, failure otherwise 3675 * 3676 * Although mac80211/low level driver/user space application can estimate 3677 * the need to start aggregation on a certain RA/TID, the session level 3678 * will be managed by the mac80211. 3679 */ 3680int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, 3681 u16 timeout); 3682 3683/** 3684 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. 3685 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3686 * @ra: receiver address of the BA session recipient. 3687 * @tid: the TID to BA on. 3688 * 3689 * This function must be called by low level driver once it has 3690 * finished with preparations for the BA session. It can be called 3691 * from any context. 3692 */ 3693void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3694 u16 tid); 3695 3696/** 3697 * ieee80211_stop_tx_ba_session - Stop a Block Ack session. 3698 * @sta: the station whose BA session to stop 3699 * @tid: the TID to stop BA. 3700 * 3701 * Return: negative error if the TID is invalid, or no aggregation active 3702 * 3703 * Although mac80211/low level driver/user space application can estimate 3704 * the need to stop aggregation on a certain RA/TID, the session level 3705 * will be managed by the mac80211. 3706 */ 3707int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); 3708 3709/** 3710 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. 3711 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3712 * @ra: receiver address of the BA session recipient. 3713 * @tid: the desired TID to BA on. 3714 * 3715 * This function must be called by low level driver once it has 3716 * finished with preparations for the BA session tear down. It 3717 * can be called from any context. 3718 */ 3719void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3720 u16 tid); 3721 3722/** 3723 * ieee80211_find_sta - find a station 3724 * 3725 * @vif: virtual interface to look for station on 3726 * @addr: station's address 3727 * 3728 * Return: The station, if found. %NULL otherwise. 3729 * 3730 * Note: This function must be called under RCU lock and the 3731 * resulting pointer is only valid under RCU lock as well. 3732 */ 3733struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, 3734 const u8 *addr); 3735 3736/** 3737 * ieee80211_find_sta_by_ifaddr - find a station on hardware 3738 * 3739 * @hw: pointer as obtained from ieee80211_alloc_hw() 3740 * @addr: remote station's address 3741 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. 3742 * 3743 * Return: The station, if found. %NULL otherwise. 3744 * 3745 * Note: This function must be called under RCU lock and the 3746 * resulting pointer is only valid under RCU lock as well. 3747 * 3748 * NOTE: You may pass NULL for localaddr, but then you will just get 3749 * the first STA that matches the remote address 'addr'. 3750 * We can have multiple STA associated with multiple 3751 * logical stations (e.g. consider a station connecting to another 3752 * BSSID on the same AP hardware without disconnecting first). 3753 * In this case, the result of this method with localaddr NULL 3754 * is not reliable. 3755 * 3756 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. 3757 */ 3758struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, 3759 const u8 *addr, 3760 const u8 *localaddr); 3761 3762/** 3763 * ieee80211_sta_block_awake - block station from waking up 3764 * @hw: the hardware 3765 * @pubsta: the station 3766 * @block: whether to block or unblock 3767 * 3768 * Some devices require that all frames that are on the queues 3769 * for a specific station that went to sleep are flushed before 3770 * a poll response or frames after the station woke up can be 3771 * delivered to that it. Note that such frames must be rejected 3772 * by the driver as filtered, with the appropriate status flag. 3773 * 3774 * This function allows implementing this mode in a race-free 3775 * manner. 3776 * 3777 * To do this, a driver must keep track of the number of frames 3778 * still enqueued for a specific station. If this number is not 3779 * zero when the station goes to sleep, the driver must call 3780 * this function to force mac80211 to consider the station to 3781 * be asleep regardless of the station's actual state. Once the 3782 * number of outstanding frames reaches zero, the driver must 3783 * call this function again to unblock the station. That will 3784 * cause mac80211 to be able to send ps-poll responses, and if 3785 * the station queried in the meantime then frames will also 3786 * be sent out as a result of this. Additionally, the driver 3787 * will be notified that the station woke up some time after 3788 * it is unblocked, regardless of whether the station actually 3789 * woke up while blocked or not. 3790 */ 3791void ieee80211_sta_block_awake(struct ieee80211_hw *hw, 3792 struct ieee80211_sta *pubsta, bool block); 3793 3794/** 3795 * ieee80211_sta_eosp - notify mac80211 about end of SP 3796 * @pubsta: the station 3797 * 3798 * When a device transmits frames in a way that it can't tell 3799 * mac80211 in the TX status about the EOSP, it must clear the 3800 * %IEEE80211_TX_STATUS_EOSP bit and call this function instead. 3801 * This applies for PS-Poll as well as uAPSD. 3802 * 3803 * Note that there is no non-_irqsafe version right now as 3804 * it wasn't needed, but just like _tx_status() and _rx() 3805 * must not be mixed in irqsafe/non-irqsafe versions, this 3806 * function must not be mixed with those either. Use the 3807 * all irqsafe, or all non-irqsafe, don't mix! If you need 3808 * the non-irqsafe version of this, you need to add it. 3809 */ 3810void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta); 3811 3812/** 3813 * ieee80211_iter_keys - iterate keys programmed into the device 3814 * @hw: pointer obtained from ieee80211_alloc_hw() 3815 * @vif: virtual interface to iterate, may be %NULL for all 3816 * @iter: iterator function that will be called for each key 3817 * @iter_data: custom data to pass to the iterator function 3818 * 3819 * This function can be used to iterate all the keys known to 3820 * mac80211, even those that weren't previously programmed into 3821 * the device. This is intended for use in WoWLAN if the device 3822 * needs reprogramming of the keys during suspend. Note that due 3823 * to locking reasons, it is also only safe to call this at few 3824 * spots since it must hold the RTNL and be able to sleep. 3825 * 3826 * The order in which the keys are iterated matches the order 3827 * in which they were originally installed and handed to the 3828 * set_key callback. 3829 */ 3830void ieee80211_iter_keys(struct ieee80211_hw *hw, 3831 struct ieee80211_vif *vif, 3832 void (*iter)(struct ieee80211_hw *hw, 3833 struct ieee80211_vif *vif, 3834 struct ieee80211_sta *sta, 3835 struct ieee80211_key_conf *key, 3836 void *data), 3837 void *iter_data); 3838 3839/** 3840 * ieee80211_iter_chan_contexts_atomic - iterate channel contexts 3841 * @hw: pointre obtained from ieee80211_alloc_hw(). 3842 * @iter: iterator function 3843 * @iter_data: data passed to iterator function 3844 * 3845 * Iterate all active channel contexts. This function is atomic and 3846 * doesn't acquire any locks internally that might be held in other 3847 * places while calling into the driver. 3848 * 3849 * The iterator will not find a context that's being added (during 3850 * the driver callback to add it) but will find it while it's being 3851 * removed. 3852 * 3853 * Note that during hardware restart, all contexts that existed 3854 * before the restart are considered already present so will be 3855 * found while iterating, whether they've been re-added already 3856 * or not. 3857 */ 3858void ieee80211_iter_chan_contexts_atomic( 3859 struct ieee80211_hw *hw, 3860 void (*iter)(struct ieee80211_hw *hw, 3861 struct ieee80211_chanctx_conf *chanctx_conf, 3862 void *data), 3863 void *iter_data); 3864 3865/** 3866 * ieee80211_ap_probereq_get - retrieve a Probe Request template 3867 * @hw: pointer obtained from ieee80211_alloc_hw(). 3868 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3869 * 3870 * Creates a Probe Request template which can, for example, be uploaded to 3871 * hardware. The template is filled with bssid, ssid and supported rate 3872 * information. This function must only be called from within the 3873 * .bss_info_changed callback function and only in managed mode. The function 3874 * is only useful when the interface is associated, otherwise it will return 3875 * %NULL. 3876 * 3877 * Return: The Probe Request template. %NULL on error. 3878 */ 3879struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 3880 struct ieee80211_vif *vif); 3881 3882/** 3883 * ieee80211_beacon_loss - inform hardware does not receive beacons 3884 * 3885 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3886 * 3887 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER and 3888 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the 3889 * hardware is not receiving beacons with this function. 3890 */ 3891void ieee80211_beacon_loss(struct ieee80211_vif *vif); 3892 3893/** 3894 * ieee80211_connection_loss - inform hardware has lost connection to the AP 3895 * 3896 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3897 * 3898 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER, and 3899 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver 3900 * needs to inform if the connection to the AP has been lost. 3901 * The function may also be called if the connection needs to be terminated 3902 * for some other reason, even if %IEEE80211_HW_CONNECTION_MONITOR isn't set. 3903 * 3904 * This function will cause immediate change to disassociated state, 3905 * without connection recovery attempts. 3906 */ 3907void ieee80211_connection_loss(struct ieee80211_vif *vif); 3908 3909/** 3910 * ieee80211_resume_disconnect - disconnect from AP after resume 3911 * 3912 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3913 * 3914 * Instructs mac80211 to disconnect from the AP after resume. 3915 * Drivers can use this after WoWLAN if they know that the 3916 * connection cannot be kept up, for example because keys were 3917 * used while the device was asleep but the replay counters or 3918 * similar cannot be retrieved from the device during resume. 3919 * 3920 * Note that due to implementation issues, if the driver uses 3921 * the reconfiguration functionality during resume the interface 3922 * will still be added as associated first during resume and then 3923 * disconnect normally later. 3924 * 3925 * This function can only be called from the resume callback and 3926 * the driver must not be holding any of its own locks while it 3927 * calls this function, or at least not any locks it needs in the 3928 * key configuration paths (if it supports HW crypto). 3929 */ 3930void ieee80211_resume_disconnect(struct ieee80211_vif *vif); 3931 3932/** 3933 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring 3934 * rssi threshold triggered 3935 * 3936 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3937 * @rssi_event: the RSSI trigger event type 3938 * @gfp: context flags 3939 * 3940 * When the %IEEE80211_VIF_SUPPORTS_CQM_RSSI is set, and a connection quality 3941 * monitoring is configured with an rssi threshold, the driver will inform 3942 * whenever the rssi level reaches the threshold. 3943 */ 3944void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 3945 enum nl80211_cqm_rssi_threshold_event rssi_event, 3946 gfp_t gfp); 3947 3948/** 3949 * ieee80211_chswitch_done - Complete channel switch process 3950 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3951 * @success: make the channel switch successful or not 3952 * 3953 * Complete the channel switch post-process: set the new operational channel 3954 * and wake up the suspended queues. 3955 */ 3956void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); 3957 3958/** 3959 * ieee80211_request_smps - request SM PS transition 3960 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3961 * @smps_mode: new SM PS mode 3962 * 3963 * This allows the driver to request an SM PS transition in managed 3964 * mode. This is useful when the driver has more information than 3965 * the stack about possible interference, for example by bluetooth. 3966 */ 3967void ieee80211_request_smps(struct ieee80211_vif *vif, 3968 enum ieee80211_smps_mode smps_mode); 3969 3970/** 3971 * ieee80211_ready_on_channel - notification of remain-on-channel start 3972 * @hw: pointer as obtained from ieee80211_alloc_hw() 3973 */ 3974void ieee80211_ready_on_channel(struct ieee80211_hw *hw); 3975 3976/** 3977 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired 3978 * @hw: pointer as obtained from ieee80211_alloc_hw() 3979 */ 3980void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); 3981 3982/** 3983 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions 3984 * 3985 * in order not to harm the system performance and user experience, the device 3986 * may request not to allow any rx ba session and tear down existing rx ba 3987 * sessions based on system constraints such as periodic BT activity that needs 3988 * to limit wlan activity (eg.sco or a2dp)." 3989 * in such cases, the intention is to limit the duration of the rx ppdu and 3990 * therefore prevent the peer device to use a-mpdu aggregation. 3991 * 3992 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3993 * @ba_rx_bitmap: Bit map of open rx ba per tid 3994 * @addr: & to bssid mac address 3995 */ 3996void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, 3997 const u8 *addr); 3998 3999/** 4000 * ieee80211_send_bar - send a BlockAckReq frame 4001 * 4002 * can be used to flush pending frames from the peer's aggregation reorder 4003 * buffer. 4004 * 4005 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4006 * @ra: the peer's destination address 4007 * @tid: the TID of the aggregation session 4008 * @ssn: the new starting sequence number for the receiver 4009 */ 4010void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn); 4011 4012/* Rate control API */ 4013 4014/** 4015 * struct ieee80211_tx_rate_control - rate control information for/from RC algo 4016 * 4017 * @hw: The hardware the algorithm is invoked for. 4018 * @sband: The band this frame is being transmitted on. 4019 * @bss_conf: the current BSS configuration 4020 * @skb: the skb that will be transmitted, the control information in it needs 4021 * to be filled in 4022 * @reported_rate: The rate control algorithm can fill this in to indicate 4023 * which rate should be reported to userspace as the current rate and 4024 * used for rate calculations in the mesh network. 4025 * @rts: whether RTS will be used for this frame because it is longer than the 4026 * RTS threshold 4027 * @short_preamble: whether mac80211 will request short-preamble transmission 4028 * if the selected rate supports it 4029 * @max_rate_idx: user-requested maximum (legacy) rate 4030 * (deprecated; this will be removed once drivers get updated to use 4031 * rate_idx_mask) 4032 * @rate_idx_mask: user-requested (legacy) rate mask 4033 * @rate_idx_mcs_mask: user-requested MCS rate mask 4034 * @bss: whether this frame is sent out in AP or IBSS mode 4035 */ 4036struct ieee80211_tx_rate_control { 4037 struct ieee80211_hw *hw; 4038 struct ieee80211_supported_band *sband; 4039 struct ieee80211_bss_conf *bss_conf; 4040 struct sk_buff *skb; 4041 struct ieee80211_tx_rate reported_rate; 4042 bool rts, short_preamble; 4043 u8 max_rate_idx; 4044 u32 rate_idx_mask; 4045 u8 rate_idx_mcs_mask[IEEE80211_HT_MCS_MASK_LEN]; 4046 bool bss; 4047}; 4048 4049struct rate_control_ops { 4050 struct module *module; 4051 const char *name; 4052 void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); 4053 void (*free)(void *priv); 4054 4055 void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); 4056 void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, 4057 struct ieee80211_sta *sta, void *priv_sta); 4058 void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, 4059 struct ieee80211_sta *sta, void *priv_sta, 4060 u32 changed); 4061 void (*free_sta)(void *priv, struct ieee80211_sta *sta, 4062 void *priv_sta); 4063 4064 void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, 4065 struct ieee80211_sta *sta, void *priv_sta, 4066 struct sk_buff *skb); 4067 void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, 4068 struct ieee80211_tx_rate_control *txrc); 4069 4070 void (*add_sta_debugfs)(void *priv, void *priv_sta, 4071 struct dentry *dir); 4072 void (*remove_sta_debugfs)(void *priv, void *priv_sta); 4073}; 4074 4075static inline int rate_supported(struct ieee80211_sta *sta, 4076 enum ieee80211_band band, 4077 int index) 4078{ 4079 return (sta == NULL || sta->supp_rates[band] & BIT(index)); 4080} 4081 4082/** 4083 * rate_control_send_low - helper for drivers for management/no-ack frames 4084 * 4085 * Rate control algorithms that agree to use the lowest rate to 4086 * send management frames and NO_ACK data with the respective hw 4087 * retries should use this in the beginning of their mac80211 get_rate 4088 * callback. If true is returned the rate control can simply return. 4089 * If false is returned we guarantee that sta and sta and priv_sta is 4090 * not null. 4091 * 4092 * Rate control algorithms wishing to do more intelligent selection of 4093 * rate for multicast/broadcast frames may choose to not use this. 4094 * 4095 * @sta: &struct ieee80211_sta pointer to the target destination. Note 4096 * that this may be null. 4097 * @priv_sta: private rate control structure. This may be null. 4098 * @txrc: rate control information we sholud populate for mac80211. 4099 */ 4100bool rate_control_send_low(struct ieee80211_sta *sta, 4101 void *priv_sta, 4102 struct ieee80211_tx_rate_control *txrc); 4103 4104 4105static inline s8 4106rate_lowest_index(struct ieee80211_supported_band *sband, 4107 struct ieee80211_sta *sta) 4108{ 4109 int i; 4110 4111 for (i = 0; i < sband->n_bitrates; i++) 4112 if (rate_supported(sta, sband->band, i)) 4113 return i; 4114 4115 /* warn when we cannot find a rate. */ 4116 WARN_ON_ONCE(1); 4117 4118 /* and return 0 (the lowest index) */ 4119 return 0; 4120} 4121 4122static inline 4123bool rate_usable_index_exists(struct ieee80211_supported_band *sband, 4124 struct ieee80211_sta *sta) 4125{ 4126 unsigned int i; 4127 4128 for (i = 0; i < sband->n_bitrates; i++) 4129 if (rate_supported(sta, sband->band, i)) 4130 return true; 4131 return false; 4132} 4133 4134int ieee80211_rate_control_register(struct rate_control_ops *ops); 4135void ieee80211_rate_control_unregister(struct rate_control_ops *ops); 4136 4137static inline bool 4138conf_is_ht20(struct ieee80211_conf *conf) 4139{ 4140 return conf->channel_type == NL80211_CHAN_HT20; 4141} 4142 4143static inline bool 4144conf_is_ht40_minus(struct ieee80211_conf *conf) 4145{ 4146 return conf->channel_type == NL80211_CHAN_HT40MINUS; 4147} 4148 4149static inline bool 4150conf_is_ht40_plus(struct ieee80211_conf *conf) 4151{ 4152 return conf->channel_type == NL80211_CHAN_HT40PLUS; 4153} 4154 4155static inline bool 4156conf_is_ht40(struct ieee80211_conf *conf) 4157{ 4158 return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); 4159} 4160 4161static inline bool 4162conf_is_ht(struct ieee80211_conf *conf) 4163{ 4164 return conf->channel_type != NL80211_CHAN_NO_HT; 4165} 4166 4167static inline enum nl80211_iftype 4168ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) 4169{ 4170 if (p2p) { 4171 switch (type) { 4172 case NL80211_IFTYPE_STATION: 4173 return NL80211_IFTYPE_P2P_CLIENT; 4174 case NL80211_IFTYPE_AP: 4175 return NL80211_IFTYPE_P2P_GO; 4176 default: 4177 break; 4178 } 4179 } 4180 return type; 4181} 4182 4183static inline enum nl80211_iftype 4184ieee80211_vif_type_p2p(struct ieee80211_vif *vif) 4185{ 4186 return ieee80211_iftype_p2p(vif->type, vif->p2p); 4187} 4188 4189void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 4190 int rssi_min_thold, 4191 int rssi_max_thold); 4192 4193void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif); 4194 4195/** 4196 * ieee80211_ave_rssi - report the average RSSI for the specified interface 4197 * 4198 * @vif: the specified virtual interface 4199 * 4200 * Note: This function assumes that the given vif is valid. 4201 * 4202 * Return: The average RSSI value for the requested interface, or 0 if not 4203 * applicable. 4204 */ 4205int ieee80211_ave_rssi(struct ieee80211_vif *vif); 4206 4207/** 4208 * ieee80211_report_wowlan_wakeup - report WoWLAN wakeup 4209 * @vif: virtual interface 4210 * @wakeup: wakeup reason(s) 4211 * @gfp: allocation flags 4212 * 4213 * See cfg80211_report_wowlan_wakeup(). 4214 */ 4215void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, 4216 struct cfg80211_wowlan_wakeup *wakeup, 4217 gfp_t gfp); 4218 4219#endif /* MAC80211_H */ 4220