mac80211.h revision 164eb02d070af987890e1db1c12b8ae0394b19f7
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 * @IEEE80211_CHANCTX_CHANGE_RADAR: radar detection flag changed 151 */ 152enum ieee80211_chanctx_change { 153 IEEE80211_CHANCTX_CHANGE_WIDTH = BIT(0), 154 IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(1), 155 IEEE80211_CHANCTX_CHANGE_RADAR = BIT(2), 156}; 157 158/** 159 * struct ieee80211_chanctx_conf - channel context that vifs may be tuned to 160 * 161 * This is the driver-visible part. The ieee80211_chanctx 162 * that contains it is visible in mac80211 only. 163 * 164 * @def: the channel definition 165 * @rx_chains_static: The number of RX chains that must always be 166 * active on the channel to receive MIMO transmissions 167 * @rx_chains_dynamic: The number of RX chains that must be enabled 168 * after RTS/CTS handshake to receive SMPS MIMO transmissions; 169 * this will always be >= @rx_chains_static. 170 * @radar_enabled: whether radar detection is enabled on this channel. 171 * @drv_priv: data area for driver use, will always be aligned to 172 * sizeof(void *), size is determined in hw information. 173 */ 174struct ieee80211_chanctx_conf { 175 struct cfg80211_chan_def def; 176 177 u8 rx_chains_static, rx_chains_dynamic; 178 179 bool radar_enabled; 180 181 u8 drv_priv[0] __aligned(sizeof(void *)); 182}; 183 184/** 185 * enum ieee80211_bss_change - BSS change notification flags 186 * 187 * These flags are used with the bss_info_changed() callback 188 * to indicate which BSS parameter changed. 189 * 190 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), 191 * also implies a change in the AID. 192 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed 193 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed 194 * @BSS_CHANGED_ERP_SLOT: slot timing changed 195 * @BSS_CHANGED_HT: 802.11n parameters changed 196 * @BSS_CHANGED_BASIC_RATES: Basic rateset changed 197 * @BSS_CHANGED_BEACON_INT: Beacon interval changed 198 * @BSS_CHANGED_BSSID: BSSID changed, for whatever 199 * reason (IBSS and managed mode) 200 * @BSS_CHANGED_BEACON: Beacon data changed, retrieve 201 * new beacon (beaconing modes) 202 * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be 203 * enabled/disabled (beaconing modes) 204 * @BSS_CHANGED_CQM: Connection quality monitor config changed 205 * @BSS_CHANGED_IBSS: IBSS join status changed 206 * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. 207 * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note 208 * that it is only ever disabled for station mode. 209 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface. 210 * @BSS_CHANGED_SSID: SSID changed for this BSS (AP mode) 211 * @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode) 212 * @BSS_CHANGED_PS: PS changed for this BSS (STA mode) 213 * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface 214 * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS) 215 * changed (currently only in P2P client mode, GO mode will be later) 216 * @BSS_CHANGED_DTIM_PERIOD: the DTIM period value was changed (set when 217 * it becomes valid, managed mode only) 218 */ 219enum ieee80211_bss_change { 220 BSS_CHANGED_ASSOC = 1<<0, 221 BSS_CHANGED_ERP_CTS_PROT = 1<<1, 222 BSS_CHANGED_ERP_PREAMBLE = 1<<2, 223 BSS_CHANGED_ERP_SLOT = 1<<3, 224 BSS_CHANGED_HT = 1<<4, 225 BSS_CHANGED_BASIC_RATES = 1<<5, 226 BSS_CHANGED_BEACON_INT = 1<<6, 227 BSS_CHANGED_BSSID = 1<<7, 228 BSS_CHANGED_BEACON = 1<<8, 229 BSS_CHANGED_BEACON_ENABLED = 1<<9, 230 BSS_CHANGED_CQM = 1<<10, 231 BSS_CHANGED_IBSS = 1<<11, 232 BSS_CHANGED_ARP_FILTER = 1<<12, 233 BSS_CHANGED_QOS = 1<<13, 234 BSS_CHANGED_IDLE = 1<<14, 235 BSS_CHANGED_SSID = 1<<15, 236 BSS_CHANGED_AP_PROBE_RESP = 1<<16, 237 BSS_CHANGED_PS = 1<<17, 238 BSS_CHANGED_TXPOWER = 1<<18, 239 BSS_CHANGED_P2P_PS = 1<<19, 240 BSS_CHANGED_DTIM_PERIOD = 1<<20, 241 242 /* when adding here, make sure to change ieee80211_reconfig */ 243}; 244 245/* 246 * The maximum number of IPv4 addresses listed for ARP filtering. If the number 247 * of addresses for an interface increase beyond this value, hardware ARP 248 * filtering will be disabled. 249 */ 250#define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 251 252/** 253 * enum ieee80211_rssi_event - RSSI threshold event 254 * An indicator for when RSSI goes below/above a certain threshold. 255 * @RSSI_EVENT_HIGH: AP's rssi crossed the high threshold set by the driver. 256 * @RSSI_EVENT_LOW: AP's rssi crossed the low threshold set by the driver. 257 */ 258enum ieee80211_rssi_event { 259 RSSI_EVENT_HIGH, 260 RSSI_EVENT_LOW, 261}; 262 263/** 264 * struct ieee80211_bss_conf - holds the BSS's changing parameters 265 * 266 * This structure keeps information about a BSS (and an association 267 * to that BSS) that can change during the lifetime of the BSS. 268 * 269 * @assoc: association status 270 * @ibss_joined: indicates whether this station is part of an IBSS 271 * or not 272 * @ibss_creator: indicates if a new IBSS network is being created 273 * @aid: association ID number, valid only when @assoc is true 274 * @use_cts_prot: use CTS protection 275 * @use_short_preamble: use 802.11b short preamble; 276 * if the hardware cannot handle this it must set the 277 * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag 278 * @use_short_slot: use short slot time (only relevant for ERP); 279 * if the hardware cannot handle this it must set the 280 * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag 281 * @dtim_period: num of beacons before the next DTIM, for beaconing, 282 * valid in station mode only if after the driver was notified 283 * with the %BSS_CHANGED_DTIM_PERIOD flag, will be non-zero then. 284 * @sync_tsf: last beacon's/probe response's TSF timestamp (could be old 285 * as it may have been received during scanning long ago). If the 286 * HW flag %IEEE80211_HW_TIMING_BEACON_ONLY is set, then this can 287 * only come from a beacon, but might not become valid until after 288 * association when a beacon is received (which is notified with the 289 * %BSS_CHANGED_DTIM flag.) 290 * @sync_device_ts: the device timestamp corresponding to the sync_tsf, 291 * the driver/device can use this to calculate synchronisation 292 * (see @sync_tsf) 293 * @sync_dtim_count: Only valid when %IEEE80211_HW_TIMING_BEACON_ONLY 294 * is requested, see @sync_tsf/@sync_device_ts. 295 * @beacon_int: beacon interval 296 * @assoc_capability: capabilities taken from assoc resp 297 * @basic_rates: bitmap of basic rates, each bit stands for an 298 * index into the rate table configured by the driver in 299 * the current band. 300 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 301 * @bssid: The BSSID for this BSS 302 * @enable_beacon: whether beaconing should be enabled or not 303 * @chandef: Channel definition for this BSS -- the hardware might be 304 * configured a higher bandwidth than this BSS uses, for example. 305 * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation. 306 * This field is only valid when the channel type is one of the HT types. 307 * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value 308 * implies disabled 309 * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis 310 * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The 311 * may filter ARP queries targeted for other addresses than listed here. 312 * The driver must allow ARP queries targeted for all address listed here 313 * to pass through. An empty list implies no ARP queries need to pass. 314 * @arp_addr_cnt: Number of addresses currently on the list. Note that this 315 * may be larger than %IEEE80211_BSS_ARP_ADDR_LIST_LEN (the arp_addr_list 316 * array size), it's up to the driver what to do in that case. 317 * @qos: This is a QoS-enabled BSS. 318 * @idle: This interface is idle. There's also a global idle flag in the 319 * hardware config which may be more appropriate depending on what 320 * your driver/device needs to do. 321 * @ps: power-save mode (STA only). This flag is NOT affected by 322 * offchannel/dynamic_ps operations. 323 * @ssid: The SSID of the current vif. Only valid in AP-mode. 324 * @ssid_len: Length of SSID given in @ssid. 325 * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode. 326 * @txpower: TX power in dBm 327 * @p2p_ctwindow: P2P CTWindow, only for P2P client interfaces 328 * @p2p_oppps: P2P opportunistic PS is enabled 329 */ 330struct ieee80211_bss_conf { 331 const u8 *bssid; 332 /* association related data */ 333 bool assoc, ibss_joined; 334 bool ibss_creator; 335 u16 aid; 336 /* erp related data */ 337 bool use_cts_prot; 338 bool use_short_preamble; 339 bool use_short_slot; 340 bool enable_beacon; 341 u8 dtim_period; 342 u16 beacon_int; 343 u16 assoc_capability; 344 u64 sync_tsf; 345 u32 sync_device_ts; 346 u8 sync_dtim_count; 347 u32 basic_rates; 348 int mcast_rate[IEEE80211_NUM_BANDS]; 349 u16 ht_operation_mode; 350 s32 cqm_rssi_thold; 351 u32 cqm_rssi_hyst; 352 struct cfg80211_chan_def chandef; 353 __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; 354 int arp_addr_cnt; 355 bool qos; 356 bool idle; 357 bool ps; 358 u8 ssid[IEEE80211_MAX_SSID_LEN]; 359 size_t ssid_len; 360 bool hidden_ssid; 361 int txpower; 362 u8 p2p_ctwindow; 363 bool p2p_oppps; 364}; 365 366/** 367 * enum mac80211_tx_control_flags - flags to describe transmission information/status 368 * 369 * These flags are used with the @flags member of &ieee80211_tx_info. 370 * 371 * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. 372 * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence 373 * number to this frame, taking care of not overwriting the fragment 374 * number and increasing the sequence number only when the 375 * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly 376 * assign sequence numbers to QoS-data frames but cannot do so correctly 377 * for non-QoS-data and management frames because beacons need them from 378 * that counter as well and mac80211 cannot guarantee proper sequencing. 379 * If this flag is set, the driver should instruct the hardware to 380 * assign a sequence number to the frame or assign one itself. Cf. IEEE 381 * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for 382 * beacons and always be clear for frames without a sequence number field. 383 * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack 384 * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination 385 * station 386 * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame 387 * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon 388 * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU 389 * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. 390 * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted 391 * because the destination STA was in powersave mode. Note that to 392 * avoid race conditions, the filter must be set by the hardware or 393 * firmware upon receiving a frame that indicates that the station 394 * went to sleep (must be done on device to filter frames already on 395 * the queue) and may only be unset after mac80211 gives the OK for 396 * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), 397 * since only then is it guaranteed that no more frames are in the 398 * hardware queue. 399 * @IEEE80211_TX_STAT_ACK: Frame was acknowledged 400 * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status 401 * is for the whole aggregation. 402 * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, 403 * so consider using block ack request (BAR). 404 * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be 405 * set by rate control algorithms to indicate probe rate, will 406 * be cleared for fragmented frames (except on the last fragment) 407 * @IEEE80211_TX_INTFL_OFFCHAN_TX_OK: Internal to mac80211. Used to indicate 408 * that a frame can be transmitted while the queues are stopped for 409 * off-channel operation. 410 * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, 411 * used to indicate that a pending frame requires TX processing before 412 * it can be sent out. 413 * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, 414 * used to indicate that a frame was already retried due to PS 415 * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, 416 * used to indicate frame should not be encrypted 417 * @IEEE80211_TX_CTL_NO_PS_BUFFER: This frame is a response to a poll 418 * frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must 419 * be sent although the station is in powersave mode. 420 * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the 421 * transmit function after the current frame, this can be used 422 * by drivers to kick the DMA queue only if unset or when the 423 * queue gets full. 424 * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted 425 * after TX status because the destination was asleep, it must not 426 * be modified again (no seqno assignment, crypto, etc.) 427 * @IEEE80211_TX_INTFL_MLME_CONN_TX: This frame was transmitted by the MLME 428 * code for connection establishment, this indicates that its status 429 * should kick the MLME state machine. 430 * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 431 * MLME command (internal to mac80211 to figure out whether to send TX 432 * status to user space) 433 * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame 434 * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this 435 * frame and selects the maximum number of streams that it can use. 436 * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on 437 * the off-channel channel when a remain-on-channel offload is done 438 * in hardware -- normal packets still flow and are expected to be 439 * handled properly by the device. 440 * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP 441 * testing. It will be sent out with incorrect Michael MIC key to allow 442 * TKIP countermeasures to be tested. 443 * @IEEE80211_TX_CTL_NO_CCK_RATE: This frame will be sent at non CCK rate. 444 * This flag is actually used for management frame especially for P2P 445 * frames not being sent at CCK rate in 2GHz band. 446 * @IEEE80211_TX_STATUS_EOSP: This packet marks the end of service period, 447 * when its status is reported the service period ends. For frames in 448 * an SP that mac80211 transmits, it is already set; for driver frames 449 * the driver may set this flag. It is also used to do the same for 450 * PS-Poll responses. 451 * @IEEE80211_TX_CTL_USE_MINRATE: This frame will be sent at lowest rate. 452 * This flag is used to send nullfunc frame at minimum rate when 453 * the nullfunc is used for connection monitoring purpose. 454 * @IEEE80211_TX_CTL_DONTFRAG: Don't fragment this packet even if it 455 * would be fragmented by size (this is optional, only used for 456 * monitor injection). 457 * 458 * Note: If you have to add new flags to the enumeration, then don't 459 * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary. 460 */ 461enum mac80211_tx_control_flags { 462 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), 463 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 464 IEEE80211_TX_CTL_NO_ACK = BIT(2), 465 IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), 466 IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), 467 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), 468 IEEE80211_TX_CTL_AMPDU = BIT(6), 469 IEEE80211_TX_CTL_INJECTED = BIT(7), 470 IEEE80211_TX_STAT_TX_FILTERED = BIT(8), 471 IEEE80211_TX_STAT_ACK = BIT(9), 472 IEEE80211_TX_STAT_AMPDU = BIT(10), 473 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), 474 IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), 475 IEEE80211_TX_INTFL_OFFCHAN_TX_OK = BIT(13), 476 IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), 477 IEEE80211_TX_INTFL_RETRIED = BIT(15), 478 IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), 479 IEEE80211_TX_CTL_NO_PS_BUFFER = BIT(17), 480 IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), 481 IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), 482 IEEE80211_TX_INTFL_MLME_CONN_TX = BIT(20), 483 IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), 484 IEEE80211_TX_CTL_LDPC = BIT(22), 485 IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), 486 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25), 487 IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26), 488 IEEE80211_TX_CTL_NO_CCK_RATE = BIT(27), 489 IEEE80211_TX_STATUS_EOSP = BIT(28), 490 IEEE80211_TX_CTL_USE_MINRATE = BIT(29), 491 IEEE80211_TX_CTL_DONTFRAG = BIT(30), 492}; 493 494#define IEEE80211_TX_CTL_STBC_SHIFT 23 495 496/* 497 * This definition is used as a mask to clear all temporary flags, which are 498 * set by the tx handlers for each transmission attempt by the mac80211 stack. 499 */ 500#define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \ 501 IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \ 502 IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \ 503 IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \ 504 IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \ 505 IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_NO_PS_BUFFER | \ 506 IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \ 507 IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP) 508 509/** 510 * enum mac80211_rate_control_flags - per-rate flags set by the 511 * Rate Control algorithm. 512 * 513 * These flags are set by the Rate control algorithm for each rate during tx, 514 * in the @flags member of struct ieee80211_tx_rate. 515 * 516 * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. 517 * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. 518 * This is set if the current BSS requires ERP protection. 519 * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. 520 * @IEEE80211_TX_RC_MCS: HT rate. 521 * @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split 522 * into a higher 4 bits (Nss) and lower 4 bits (MCS number) 523 * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in 524 * Greenfield mode. 525 * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. 526 * @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission 527 * @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission 528 * (80+80 isn't supported yet) 529 * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the 530 * adjacent 20 MHz channels, if the current channel type is 531 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. 532 * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. 533 */ 534enum mac80211_rate_control_flags { 535 IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), 536 IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), 537 IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), 538 539 /* rate index is an HT/VHT MCS instead of an index */ 540 IEEE80211_TX_RC_MCS = BIT(3), 541 IEEE80211_TX_RC_GREEN_FIELD = BIT(4), 542 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), 543 IEEE80211_TX_RC_DUP_DATA = BIT(6), 544 IEEE80211_TX_RC_SHORT_GI = BIT(7), 545 IEEE80211_TX_RC_VHT_MCS = BIT(8), 546 IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(9), 547 IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(10), 548}; 549 550 551/* there are 40 bytes if you don't need the rateset to be kept */ 552#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 553 554/* if you do need the rateset, then you have less space */ 555#define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 556 557/* maximum number of rate stages */ 558#define IEEE80211_TX_MAX_RATES 4 559 560/** 561 * struct ieee80211_tx_rate - rate selection/status 562 * 563 * @idx: rate index to attempt to send with 564 * @flags: rate control flags (&enum mac80211_rate_control_flags) 565 * @count: number of tries in this rate before going to the next rate 566 * 567 * A value of -1 for @idx indicates an invalid rate and, if used 568 * in an array of retry rates, that no more rates should be tried. 569 * 570 * When used for transmit status reporting, the driver should 571 * always report the rate along with the flags it used. 572 * 573 * &struct ieee80211_tx_info contains an array of these structs 574 * in the control information, and it will be filled by the rate 575 * control algorithm according to what should be sent. For example, 576 * if this array contains, in the format { <idx>, <count> } the 577 * information 578 * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } 579 * then this means that the frame should be transmitted 580 * up to twice at rate 3, up to twice at rate 2, and up to four 581 * times at rate 1 if it doesn't get acknowledged. Say it gets 582 * acknowledged by the peer after the fifth attempt, the status 583 * information should then contain 584 * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... 585 * since it was transmitted twice at rate 3, twice at rate 2 586 * and once at rate 1 after which we received an acknowledgement. 587 */ 588struct ieee80211_tx_rate { 589 s8 idx; 590 u16 count:5, 591 flags:11; 592} __packed; 593 594#define IEEE80211_MAX_TX_RETRY 31 595 596static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate, 597 u8 mcs, u8 nss) 598{ 599 WARN_ON(mcs & ~0xF); 600 WARN_ON(nss & ~0x7); 601 rate->idx = (nss << 4) | mcs; 602} 603 604static inline u8 605ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate) 606{ 607 return rate->idx & 0xF; 608} 609 610static inline u8 611ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate) 612{ 613 return rate->idx >> 4; 614} 615 616/** 617 * struct ieee80211_tx_info - skb transmit information 618 * 619 * This structure is placed in skb->cb for three uses: 620 * (1) mac80211 TX control - mac80211 tells the driver what to do 621 * (2) driver internal use (if applicable) 622 * (3) TX status information - driver tells mac80211 what happened 623 * 624 * @flags: transmit info flags, defined above 625 * @band: the band to transmit on (use for checking for races) 626 * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC 627 * @ack_frame_id: internal frame ID for TX status, used internally 628 * @control: union for control data 629 * @status: union for status data 630 * @driver_data: array of driver_data pointers 631 * @ampdu_ack_len: number of acked aggregated frames. 632 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 633 * @ampdu_len: number of aggregated frames. 634 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 635 * @ack_signal: signal strength of the ACK frame 636 */ 637struct ieee80211_tx_info { 638 /* common information */ 639 u32 flags; 640 u8 band; 641 642 u8 hw_queue; 643 644 u16 ack_frame_id; 645 646 union { 647 struct { 648 union { 649 /* rate control */ 650 struct { 651 struct ieee80211_tx_rate rates[ 652 IEEE80211_TX_MAX_RATES]; 653 s8 rts_cts_rate_idx; 654 /* 3 bytes free */ 655 }; 656 /* only needed before rate control */ 657 unsigned long jiffies; 658 }; 659 /* NB: vif can be NULL for injected frames */ 660 struct ieee80211_vif *vif; 661 struct ieee80211_key_conf *hw_key; 662 /* 8 bytes free */ 663 } control; 664 struct { 665 struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; 666 int ack_signal; 667 u8 ampdu_ack_len; 668 u8 ampdu_len; 669 u8 antenna; 670 /* 21 bytes free */ 671 } status; 672 struct { 673 struct ieee80211_tx_rate driver_rates[ 674 IEEE80211_TX_MAX_RATES]; 675 void *rate_driver_data[ 676 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; 677 }; 678 void *driver_data[ 679 IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; 680 }; 681}; 682 683/** 684 * struct ieee80211_sched_scan_ies - scheduled scan IEs 685 * 686 * This structure is used to pass the appropriate IEs to be used in scheduled 687 * scans for all bands. It contains both the IEs passed from the userspace 688 * and the ones generated by mac80211. 689 * 690 * @ie: array with the IEs for each supported band 691 * @len: array with the total length of the IEs for each band 692 */ 693struct ieee80211_sched_scan_ies { 694 u8 *ie[IEEE80211_NUM_BANDS]; 695 size_t len[IEEE80211_NUM_BANDS]; 696}; 697 698static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) 699{ 700 return (struct ieee80211_tx_info *)skb->cb; 701} 702 703static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) 704{ 705 return (struct ieee80211_rx_status *)skb->cb; 706} 707 708/** 709 * ieee80211_tx_info_clear_status - clear TX status 710 * 711 * @info: The &struct ieee80211_tx_info to be cleared. 712 * 713 * When the driver passes an skb back to mac80211, it must report 714 * a number of things in TX status. This function clears everything 715 * in the TX status but the rate control information (it does clear 716 * the count since you need to fill that in anyway). 717 * 718 * NOTE: You can only use this function if you do NOT use 719 * info->driver_data! Use info->rate_driver_data 720 * instead if you need only the less space that allows. 721 */ 722static inline void 723ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) 724{ 725 int i; 726 727 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 728 offsetof(struct ieee80211_tx_info, control.rates)); 729 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 730 offsetof(struct ieee80211_tx_info, driver_rates)); 731 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); 732 /* clear the rate counts */ 733 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) 734 info->status.rates[i].count = 0; 735 736 BUILD_BUG_ON( 737 offsetof(struct ieee80211_tx_info, status.ack_signal) != 20); 738 memset(&info->status.ampdu_ack_len, 0, 739 sizeof(struct ieee80211_tx_info) - 740 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); 741} 742 743 744/** 745 * enum mac80211_rx_flags - receive flags 746 * 747 * These flags are used with the @flag member of &struct ieee80211_rx_status. 748 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. 749 * Use together with %RX_FLAG_MMIC_STRIPPED. 750 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. 751 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, 752 * verification has been done by the hardware. 753 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. 754 * If this flag is set, the stack cannot do any replay detection 755 * hence the driver or hardware will have to do that. 756 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on 757 * the frame. 758 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on 759 * the frame. 760 * @RX_FLAG_MACTIME_START: The timestamp passed in the RX status (@mactime 761 * field) is valid and contains the time the first symbol of the MPDU 762 * was received. This is useful in monitor mode and for proper IBSS 763 * merging. 764 * @RX_FLAG_MACTIME_END: The timestamp passed in the RX status (@mactime 765 * field) is valid and contains the time the last symbol of the MPDU 766 * (including FCS) was received. 767 * @RX_FLAG_SHORTPRE: Short preamble was used for this frame 768 * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index 769 * @RX_FLAG_VHT: VHT MCS was used and rate_index is MCS index 770 * @RX_FLAG_40MHZ: HT40 (40 MHz) was used 771 * @RX_FLAG_80MHZ: 80 MHz was used 772 * @RX_FLAG_80P80MHZ: 80+80 MHz was used 773 * @RX_FLAG_160MHZ: 160 MHz was used 774 * @RX_FLAG_SHORT_GI: Short guard interval was used 775 * @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present. 776 * Valid only for data frames (mainly A-MPDU) 777 * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if 778 * the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT 779 * to hw.radiotap_mcs_details to advertise that fact 780 * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference 781 * number (@ampdu_reference) must be populated and be a distinct number for 782 * each A-MPDU 783 * @RX_FLAG_AMPDU_REPORT_ZEROLEN: driver reports 0-length subframes 784 * @RX_FLAG_AMPDU_IS_ZEROLEN: This is a zero-length subframe, for 785 * monitoring purposes only 786 * @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all 787 * subframes of a single A-MPDU 788 * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU 789 * @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected 790 * on this subframe 791 * @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC 792 * is stored in the @ampdu_delimiter_crc field) 793 */ 794enum mac80211_rx_flags { 795 RX_FLAG_MMIC_ERROR = BIT(0), 796 RX_FLAG_DECRYPTED = BIT(1), 797 RX_FLAG_MMIC_STRIPPED = BIT(3), 798 RX_FLAG_IV_STRIPPED = BIT(4), 799 RX_FLAG_FAILED_FCS_CRC = BIT(5), 800 RX_FLAG_FAILED_PLCP_CRC = BIT(6), 801 RX_FLAG_MACTIME_START = BIT(7), 802 RX_FLAG_SHORTPRE = BIT(8), 803 RX_FLAG_HT = BIT(9), 804 RX_FLAG_40MHZ = BIT(10), 805 RX_FLAG_SHORT_GI = BIT(11), 806 RX_FLAG_NO_SIGNAL_VAL = BIT(12), 807 RX_FLAG_HT_GF = BIT(13), 808 RX_FLAG_AMPDU_DETAILS = BIT(14), 809 RX_FLAG_AMPDU_REPORT_ZEROLEN = BIT(15), 810 RX_FLAG_AMPDU_IS_ZEROLEN = BIT(16), 811 RX_FLAG_AMPDU_LAST_KNOWN = BIT(17), 812 RX_FLAG_AMPDU_IS_LAST = BIT(18), 813 RX_FLAG_AMPDU_DELIM_CRC_ERROR = BIT(19), 814 RX_FLAG_AMPDU_DELIM_CRC_KNOWN = BIT(20), 815 RX_FLAG_MACTIME_END = BIT(21), 816 RX_FLAG_VHT = BIT(22), 817 RX_FLAG_80MHZ = BIT(23), 818 RX_FLAG_80P80MHZ = BIT(24), 819 RX_FLAG_160MHZ = BIT(25), 820}; 821 822/** 823 * struct ieee80211_rx_status - receive status 824 * 825 * The low-level driver should provide this information (the subset 826 * supported by hardware) to the 802.11 code with each received 827 * frame, in the skb's control buffer (cb). 828 * 829 * @mactime: value in microseconds of the 64-bit Time Synchronization Function 830 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. 831 * @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use 832 * it but can store it and pass it back to the driver for synchronisation 833 * @band: the active band when this frame was received 834 * @freq: frequency the radio was tuned to when receiving this frame, in MHz 835 * @signal: signal strength when receiving this frame, either in dBm, in dB or 836 * unspecified depending on the hardware capabilities flags 837 * @IEEE80211_HW_SIGNAL_* 838 * @antenna: antenna used 839 * @rate_idx: index of data rate into band's supported rates or MCS index if 840 * HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT) 841 * @vht_nss: number of streams (VHT only) 842 * @flag: %RX_FLAG_* 843 * @rx_flags: internal RX flags for mac80211 844 * @ampdu_reference: A-MPDU reference number, must be a different value for 845 * each A-MPDU but the same for each subframe within one A-MPDU 846 * @ampdu_delimiter_crc: A-MPDU delimiter CRC 847 * @vendor_radiotap_bitmap: radiotap vendor namespace presence bitmap 848 * @vendor_radiotap_len: radiotap vendor namespace length 849 * @vendor_radiotap_align: radiotap vendor namespace alignment. Note 850 * that the actual data must be at the start of the SKB data 851 * already. 852 * @vendor_radiotap_oui: radiotap vendor namespace OUI 853 * @vendor_radiotap_subns: radiotap vendor sub namespace 854 */ 855struct ieee80211_rx_status { 856 u64 mactime; 857 u32 device_timestamp; 858 u32 ampdu_reference; 859 u32 flag; 860 u32 vendor_radiotap_bitmap; 861 u16 vendor_radiotap_len; 862 u16 freq; 863 u8 rate_idx; 864 u8 vht_nss; 865 u8 rx_flags; 866 u8 band; 867 u8 antenna; 868 s8 signal; 869 u8 ampdu_delimiter_crc; 870 u8 vendor_radiotap_align; 871 u8 vendor_radiotap_oui[3]; 872 u8 vendor_radiotap_subns; 873}; 874 875/** 876 * enum ieee80211_conf_flags - configuration flags 877 * 878 * Flags to define PHY configuration options 879 * 880 * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this 881 * to determine for example whether to calculate timestamps for packets 882 * or not, do not use instead of filter flags! 883 * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). 884 * This is the power save mode defined by IEEE 802.11-2007 section 11.2, 885 * meaning that the hardware still wakes up for beacons, is able to 886 * transmit frames and receive the possible acknowledgment frames. 887 * Not to be confused with hardware specific wakeup/sleep states, 888 * driver is responsible for that. See the section "Powersave support" 889 * for more. 890 * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set 891 * the driver should be prepared to handle configuration requests but 892 * may turn the device off as much as possible. Typically, this flag will 893 * be set when an interface is set UP but not associated or scanning, but 894 * it can also be unset in that case when monitor interfaces are active. 895 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main 896 * operating channel. 897 */ 898enum ieee80211_conf_flags { 899 IEEE80211_CONF_MONITOR = (1<<0), 900 IEEE80211_CONF_PS = (1<<1), 901 IEEE80211_CONF_IDLE = (1<<2), 902 IEEE80211_CONF_OFFCHANNEL = (1<<3), 903}; 904 905 906/** 907 * enum ieee80211_conf_changed - denotes which configuration changed 908 * 909 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed 910 * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed 911 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed 912 * @IEEE80211_CONF_CHANGE_POWER: the TX power changed 913 * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed 914 * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed 915 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed 916 * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed 917 * Note that this is only valid if channel contexts are not used, 918 * otherwise each channel context has the number of chains listed. 919 */ 920enum ieee80211_conf_changed { 921 IEEE80211_CONF_CHANGE_SMPS = BIT(1), 922 IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), 923 IEEE80211_CONF_CHANGE_MONITOR = BIT(3), 924 IEEE80211_CONF_CHANGE_PS = BIT(4), 925 IEEE80211_CONF_CHANGE_POWER = BIT(5), 926 IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), 927 IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), 928 IEEE80211_CONF_CHANGE_IDLE = BIT(8), 929}; 930 931/** 932 * enum ieee80211_smps_mode - spatial multiplexing power save mode 933 * 934 * @IEEE80211_SMPS_AUTOMATIC: automatic 935 * @IEEE80211_SMPS_OFF: off 936 * @IEEE80211_SMPS_STATIC: static 937 * @IEEE80211_SMPS_DYNAMIC: dynamic 938 * @IEEE80211_SMPS_NUM_MODES: internal, don't use 939 */ 940enum ieee80211_smps_mode { 941 IEEE80211_SMPS_AUTOMATIC, 942 IEEE80211_SMPS_OFF, 943 IEEE80211_SMPS_STATIC, 944 IEEE80211_SMPS_DYNAMIC, 945 946 /* keep last */ 947 IEEE80211_SMPS_NUM_MODES, 948}; 949 950/** 951 * struct ieee80211_conf - configuration of the device 952 * 953 * This struct indicates how the driver shall configure the hardware. 954 * 955 * @flags: configuration flags defined above 956 * 957 * @listen_interval: listen interval in units of beacon interval 958 * @max_sleep_period: the maximum number of beacon intervals to sleep for 959 * before checking the beacon for a TIM bit (managed mode only); this 960 * value will be only achievable between DTIM frames, the hardware 961 * needs to check for the multicast traffic bit in DTIM beacons. 962 * This variable is valid only when the CONF_PS flag is set. 963 * @ps_dtim_period: The DTIM period of the AP we're connected to, for use 964 * in power saving. Power saving will not be enabled until a beacon 965 * has been received and the DTIM period is known. 966 * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the 967 * powersave documentation below. This variable is valid only when 968 * the CONF_PS flag is set. 969 * 970 * @power_level: requested transmit power (in dBm), backward compatibility 971 * value only that is set to the minimum of all interfaces 972 * 973 * @channel: the channel to tune to 974 * @channel_type: the channel (HT) type 975 * @radar_enabled: whether radar detection is enabled 976 * 977 * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame 978 * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, 979 * but actually means the number of transmissions not the number of retries 980 * @short_frame_max_tx_count: Maximum number of transmissions for a "short" 981 * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the 982 * number of transmissions not the number of retries 983 * 984 * @smps_mode: spatial multiplexing powersave mode; note that 985 * %IEEE80211_SMPS_STATIC is used when the device is not 986 * configured for an HT channel. 987 * Note that this is only valid if channel contexts are not used, 988 * otherwise each channel context has the number of chains listed. 989 */ 990struct ieee80211_conf { 991 u32 flags; 992 int power_level, dynamic_ps_timeout; 993 int max_sleep_period; 994 995 u16 listen_interval; 996 u8 ps_dtim_period; 997 998 u8 long_frame_max_tx_count, short_frame_max_tx_count; 999 1000 struct ieee80211_channel *channel; 1001 enum nl80211_channel_type channel_type; 1002 bool radar_enabled; 1003 enum ieee80211_smps_mode smps_mode; 1004}; 1005 1006/** 1007 * struct ieee80211_channel_switch - holds the channel switch data 1008 * 1009 * The information provided in this structure is required for channel switch 1010 * operation. 1011 * 1012 * @timestamp: value in microseconds of the 64-bit Time Synchronization 1013 * Function (TSF) timer when the frame containing the channel switch 1014 * announcement was received. This is simply the rx.mactime parameter 1015 * the driver passed into mac80211. 1016 * @block_tx: Indicates whether transmission must be blocked before the 1017 * scheduled channel switch, as indicated by the AP. 1018 * @channel: the new channel to switch to 1019 * @count: the number of TBTT's until the channel switch event 1020 */ 1021struct ieee80211_channel_switch { 1022 u64 timestamp; 1023 bool block_tx; 1024 struct ieee80211_channel *channel; 1025 u8 count; 1026}; 1027 1028/** 1029 * enum ieee80211_vif_flags - virtual interface flags 1030 * 1031 * @IEEE80211_VIF_BEACON_FILTER: the device performs beacon filtering 1032 * on this virtual interface to avoid unnecessary CPU wakeups 1033 * @IEEE80211_VIF_SUPPORTS_CQM_RSSI: the device can do connection quality 1034 * monitoring on this virtual interface -- i.e. it can monitor 1035 * connection quality related parameters, such as the RSSI level and 1036 * provide notifications if configured trigger levels are reached. 1037 */ 1038enum ieee80211_vif_flags { 1039 IEEE80211_VIF_BEACON_FILTER = BIT(0), 1040 IEEE80211_VIF_SUPPORTS_CQM_RSSI = BIT(1), 1041}; 1042 1043/** 1044 * struct ieee80211_vif - per-interface data 1045 * 1046 * Data in this structure is continually present for driver 1047 * use during the life of a virtual interface. 1048 * 1049 * @type: type of this virtual interface 1050 * @bss_conf: BSS configuration for this interface, either our own 1051 * or the BSS we're associated to 1052 * @addr: address of this interface 1053 * @p2p: indicates whether this AP or STA interface is a p2p 1054 * interface, i.e. a GO or p2p-sta respectively 1055 * @driver_flags: flags/capabilities the driver has for this interface, 1056 * these need to be set (or cleared) when the interface is added 1057 * or, if supported by the driver, the interface type is changed 1058 * at runtime, mac80211 will never touch this field 1059 * @hw_queue: hardware queue for each AC 1060 * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only 1061 * @chanctx_conf: The channel context this interface is assigned to, or %NULL 1062 * when it is not assigned. This pointer is RCU-protected due to the TX 1063 * path needing to access it; even though the netdev carrier will always 1064 * be off when it is %NULL there can still be races and packets could be 1065 * processed after it switches back to %NULL. 1066 * @drv_priv: data area for driver use, will always be aligned to 1067 * sizeof(void *). 1068 */ 1069struct ieee80211_vif { 1070 enum nl80211_iftype type; 1071 struct ieee80211_bss_conf bss_conf; 1072 u8 addr[ETH_ALEN]; 1073 bool p2p; 1074 1075 u8 cab_queue; 1076 u8 hw_queue[IEEE80211_NUM_ACS]; 1077 1078 struct ieee80211_chanctx_conf __rcu *chanctx_conf; 1079 1080 u32 driver_flags; 1081 1082 /* must be last */ 1083 u8 drv_priv[0] __aligned(sizeof(void *)); 1084}; 1085 1086static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) 1087{ 1088#ifdef CONFIG_MAC80211_MESH 1089 return vif->type == NL80211_IFTYPE_MESH_POINT; 1090#endif 1091 return false; 1092} 1093 1094/** 1095 * enum ieee80211_key_flags - key flags 1096 * 1097 * These flags are used for communication about keys between the driver 1098 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. 1099 * 1100 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates 1101 * that the STA this key will be used with could be using QoS. 1102 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the 1103 * driver to indicate that it requires IV generation for this 1104 * particular key. 1105 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by 1106 * the driver for a TKIP key if it requires Michael MIC 1107 * generation in software. 1108 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates 1109 * that the key is pairwise rather then a shared key. 1110 * @IEEE80211_KEY_FLAG_SW_MGMT_TX: This flag should be set by the driver for a 1111 * CCMP key if it requires CCMP encryption of management frames (MFP) to 1112 * be done in software. 1113 * @IEEE80211_KEY_FLAG_PUT_IV_SPACE: This flag should be set by the driver 1114 * if space should be prepared for the IV, but the IV 1115 * itself should not be generated. Do not set together with 1116 * @IEEE80211_KEY_FLAG_GENERATE_IV on the same key. 1117 * @IEEE80211_KEY_FLAG_RX_MGMT: This key will be used to decrypt received 1118 * management frames. The flag can help drivers that have a hardware 1119 * crypto implementation that doesn't deal with management frames 1120 * properly by allowing them to not upload the keys to hardware and 1121 * fall back to software crypto. Note that this flag deals only with 1122 * RX, if your crypto engine can't deal with TX you can also set the 1123 * %IEEE80211_KEY_FLAG_SW_MGMT_TX flag to encrypt such frames in SW. 1124 */ 1125enum ieee80211_key_flags { 1126 IEEE80211_KEY_FLAG_WMM_STA = 1<<0, 1127 IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, 1128 IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, 1129 IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, 1130 IEEE80211_KEY_FLAG_SW_MGMT_TX = 1<<4, 1131 IEEE80211_KEY_FLAG_PUT_IV_SPACE = 1<<5, 1132 IEEE80211_KEY_FLAG_RX_MGMT = 1<<6, 1133}; 1134 1135/** 1136 * struct ieee80211_key_conf - key information 1137 * 1138 * This key information is given by mac80211 to the driver by 1139 * the set_key() callback in &struct ieee80211_ops. 1140 * 1141 * @hw_key_idx: To be set by the driver, this is the key index the driver 1142 * wants to be given when a frame is transmitted and needs to be 1143 * encrypted in hardware. 1144 * @cipher: The key's cipher suite selector. 1145 * @flags: key flags, see &enum ieee80211_key_flags. 1146 * @keyidx: the key index (0-3) 1147 * @keylen: key material length 1148 * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) 1149 * data block: 1150 * - Temporal Encryption Key (128 bits) 1151 * - Temporal Authenticator Tx MIC Key (64 bits) 1152 * - Temporal Authenticator Rx MIC Key (64 bits) 1153 * @icv_len: The ICV length for this key type 1154 * @iv_len: The IV length for this key type 1155 */ 1156struct ieee80211_key_conf { 1157 u32 cipher; 1158 u8 icv_len; 1159 u8 iv_len; 1160 u8 hw_key_idx; 1161 u8 flags; 1162 s8 keyidx; 1163 u8 keylen; 1164 u8 key[0]; 1165}; 1166 1167/** 1168 * enum set_key_cmd - key command 1169 * 1170 * Used with the set_key() callback in &struct ieee80211_ops, this 1171 * indicates whether a key is being removed or added. 1172 * 1173 * @SET_KEY: a key is set 1174 * @DISABLE_KEY: a key must be disabled 1175 */ 1176enum set_key_cmd { 1177 SET_KEY, DISABLE_KEY, 1178}; 1179 1180/** 1181 * enum ieee80211_sta_state - station state 1182 * 1183 * @IEEE80211_STA_NOTEXIST: station doesn't exist at all, 1184 * this is a special state for add/remove transitions 1185 * @IEEE80211_STA_NONE: station exists without special state 1186 * @IEEE80211_STA_AUTH: station is authenticated 1187 * @IEEE80211_STA_ASSOC: station is associated 1188 * @IEEE80211_STA_AUTHORIZED: station is authorized (802.1X) 1189 */ 1190enum ieee80211_sta_state { 1191 /* NOTE: These need to be ordered correctly! */ 1192 IEEE80211_STA_NOTEXIST, 1193 IEEE80211_STA_NONE, 1194 IEEE80211_STA_AUTH, 1195 IEEE80211_STA_ASSOC, 1196 IEEE80211_STA_AUTHORIZED, 1197}; 1198 1199/** 1200 * struct ieee80211_sta - station table entry 1201 * 1202 * A station table entry represents a station we are possibly 1203 * communicating with. Since stations are RCU-managed in 1204 * mac80211, any ieee80211_sta pointer you get access to must 1205 * either be protected by rcu_read_lock() explicitly or implicitly, 1206 * or you must take good care to not use such a pointer after a 1207 * call to your sta_remove callback that removed it. 1208 * 1209 * @addr: MAC address 1210 * @aid: AID we assigned to the station if we're an AP 1211 * @supp_rates: Bitmap of supported rates (per band) 1212 * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities 1213 * @vht_cap: VHT capabilities of this STA; Not restricting any capabilities 1214 * of remote STA. Taking as is. 1215 * @wme: indicates whether the STA supports WME. Only valid during AP-mode. 1216 * @drv_priv: data area for driver use, will always be aligned to 1217 * sizeof(void *), size is determined in hw information. 1218 * @uapsd_queues: bitmap of queues configured for uapsd. Only valid 1219 * if wme is supported. 1220 * @max_sp: max Service Period. Only valid if wme is supported. 1221 */ 1222struct ieee80211_sta { 1223 u32 supp_rates[IEEE80211_NUM_BANDS]; 1224 u8 addr[ETH_ALEN]; 1225 u16 aid; 1226 struct ieee80211_sta_ht_cap ht_cap; 1227 struct ieee80211_sta_vht_cap vht_cap; 1228 bool wme; 1229 u8 uapsd_queues; 1230 u8 max_sp; 1231 1232 /* must be last */ 1233 u8 drv_priv[0] __aligned(sizeof(void *)); 1234}; 1235 1236/** 1237 * enum sta_notify_cmd - sta notify command 1238 * 1239 * Used with the sta_notify() callback in &struct ieee80211_ops, this 1240 * indicates if an associated station made a power state transition. 1241 * 1242 * @STA_NOTIFY_SLEEP: a station is now sleeping 1243 * @STA_NOTIFY_AWAKE: a sleeping station woke up 1244 */ 1245enum sta_notify_cmd { 1246 STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, 1247}; 1248 1249/** 1250 * struct ieee80211_tx_control - TX control data 1251 * 1252 * @sta: station table entry, this sta pointer may be NULL and 1253 * it is not allowed to copy the pointer, due to RCU. 1254 */ 1255struct ieee80211_tx_control { 1256 struct ieee80211_sta *sta; 1257}; 1258 1259/** 1260 * enum ieee80211_hw_flags - hardware flags 1261 * 1262 * These flags are used to indicate hardware capabilities to 1263 * the stack. Generally, flags here should have their meaning 1264 * done in a way that the simplest hardware doesn't need setting 1265 * any particular flags. There are some exceptions to this rule, 1266 * however, so you are advised to review these flags carefully. 1267 * 1268 * @IEEE80211_HW_HAS_RATE_CONTROL: 1269 * The hardware or firmware includes rate control, and cannot be 1270 * controlled by the stack. As such, no rate control algorithm 1271 * should be instantiated, and the TX rate reported to userspace 1272 * will be taken from the TX status instead of the rate control 1273 * algorithm. 1274 * Note that this requires that the driver implement a number of 1275 * callbacks so it has the correct information, it needs to have 1276 * the @set_rts_threshold callback and must look at the BSS config 1277 * @use_cts_prot for G/N protection, @use_short_slot for slot 1278 * timing in 2.4 GHz and @use_short_preamble for preambles for 1279 * CCK frames. 1280 * 1281 * @IEEE80211_HW_RX_INCLUDES_FCS: 1282 * Indicates that received frames passed to the stack include 1283 * the FCS at the end. 1284 * 1285 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: 1286 * Some wireless LAN chipsets buffer broadcast/multicast frames 1287 * for power saving stations in the hardware/firmware and others 1288 * rely on the host system for such buffering. This option is used 1289 * to configure the IEEE 802.11 upper layer to buffer broadcast and 1290 * multicast frames when there are power saving stations so that 1291 * the driver can fetch them with ieee80211_get_buffered_bc(). 1292 * 1293 * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: 1294 * Hardware is not capable of short slot operation on the 2.4 GHz band. 1295 * 1296 * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: 1297 * Hardware is not capable of receiving frames with short preamble on 1298 * the 2.4 GHz band. 1299 * 1300 * @IEEE80211_HW_SIGNAL_UNSPEC: 1301 * Hardware can provide signal values but we don't know its units. We 1302 * expect values between 0 and @max_signal. 1303 * If possible please provide dB or dBm instead. 1304 * 1305 * @IEEE80211_HW_SIGNAL_DBM: 1306 * Hardware gives signal values in dBm, decibel difference from 1307 * one milliwatt. This is the preferred method since it is standardized 1308 * between different devices. @max_signal does not need to be set. 1309 * 1310 * @IEEE80211_HW_SPECTRUM_MGMT: 1311 * Hardware supports spectrum management defined in 802.11h 1312 * Measurement, Channel Switch, Quieting, TPC 1313 * 1314 * @IEEE80211_HW_AMPDU_AGGREGATION: 1315 * Hardware supports 11n A-MPDU aggregation. 1316 * 1317 * @IEEE80211_HW_SUPPORTS_PS: 1318 * Hardware has power save support (i.e. can go to sleep). 1319 * 1320 * @IEEE80211_HW_PS_NULLFUNC_STACK: 1321 * Hardware requires nullfunc frame handling in stack, implies 1322 * stack support for dynamic PS. 1323 * 1324 * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: 1325 * Hardware has support for dynamic PS. 1326 * 1327 * @IEEE80211_HW_MFP_CAPABLE: 1328 * Hardware supports management frame protection (MFP, IEEE 802.11w). 1329 * 1330 * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: 1331 * Hardware supports static spatial multiplexing powersave, 1332 * ie. can turn off all but one chain even on HT connections 1333 * that should be using more chains. 1334 * 1335 * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: 1336 * Hardware supports dynamic spatial multiplexing powersave, 1337 * ie. can turn off all but one chain and then wake the rest 1338 * up as required after, for example, rts/cts handshake. 1339 * 1340 * @IEEE80211_HW_SUPPORTS_UAPSD: 1341 * Hardware supports Unscheduled Automatic Power Save Delivery 1342 * (U-APSD) in managed mode. The mode is configured with 1343 * conf_tx() operation. 1344 * 1345 * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: 1346 * Hardware can provide ack status reports of Tx frames to 1347 * the stack. 1348 * 1349 * @IEEE80211_HW_CONNECTION_MONITOR: 1350 * The hardware performs its own connection monitoring, including 1351 * periodic keep-alives to the AP and probing the AP on beacon loss. 1352 * When this flag is set, signaling beacon-loss will cause an immediate 1353 * change to disassociated state. 1354 * 1355 * @IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC: 1356 * This device needs to get data from beacon before association (i.e. 1357 * dtim_period). 1358 * 1359 * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports 1360 * per-station GTKs as used by IBSS RSN or during fast transition. If 1361 * the device doesn't support per-station GTKs, but can be asked not 1362 * to decrypt group addressed frames, then IBSS RSN support is still 1363 * possible but software crypto will be used. Advertise the wiphy flag 1364 * only in that case. 1365 * 1366 * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device 1367 * autonomously manages the PS status of connected stations. When 1368 * this flag is set mac80211 will not trigger PS mode for connected 1369 * stations based on the PM bit of incoming frames. 1370 * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure 1371 * the PS mode of connected stations. 1372 * 1373 * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session 1374 * setup strictly in HW. mac80211 should not attempt to do this in 1375 * software. 1376 * 1377 * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of 1378 * a virtual monitor interface when monitor interfaces are the only 1379 * active interfaces. 1380 * 1381 * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface 1382 * queue mapping in order to use different queues (not just one per AC) 1383 * for different virtual interfaces. See the doc section on HW queue 1384 * control for more details. 1385 * 1386 * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any 1387 * P2P Interface. This will be honoured even if more than one interface 1388 * is supported. 1389 * 1390 * @IEEE80211_HW_TIMING_BEACON_ONLY: Use sync timing from beacon frames 1391 * only, to allow getting TBTT of a DTIM beacon. 1392 */ 1393enum ieee80211_hw_flags { 1394 IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, 1395 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, 1396 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, 1397 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, 1398 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, 1399 IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, 1400 IEEE80211_HW_SIGNAL_DBM = 1<<6, 1401 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC = 1<<7, 1402 IEEE80211_HW_SPECTRUM_MGMT = 1<<8, 1403 IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, 1404 IEEE80211_HW_SUPPORTS_PS = 1<<10, 1405 IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, 1406 IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, 1407 IEEE80211_HW_MFP_CAPABLE = 1<<13, 1408 IEEE80211_HW_WANT_MONITOR_VIF = 1<<14, 1409 IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, 1410 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, 1411 IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, 1412 IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, 1413 IEEE80211_HW_CONNECTION_MONITOR = 1<<19, 1414 IEEE80211_HW_QUEUE_CONTROL = 1<<20, 1415 IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, 1416 IEEE80211_HW_AP_LINK_PS = 1<<22, 1417 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW = 1<<23, 1418 IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF = 1<<25, 1419 IEEE80211_HW_TIMING_BEACON_ONLY = 1<<26, 1420}; 1421 1422/** 1423 * struct ieee80211_hw - hardware information and state 1424 * 1425 * This structure contains the configuration and hardware 1426 * information for an 802.11 PHY. 1427 * 1428 * @wiphy: This points to the &struct wiphy allocated for this 1429 * 802.11 PHY. You must fill in the @perm_addr and @dev 1430 * members of this structure using SET_IEEE80211_DEV() 1431 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported 1432 * bands (with channels, bitrates) are registered here. 1433 * 1434 * @conf: &struct ieee80211_conf, device configuration, don't use. 1435 * 1436 * @priv: pointer to private area that was allocated for driver use 1437 * along with this structure. 1438 * 1439 * @flags: hardware flags, see &enum ieee80211_hw_flags. 1440 * 1441 * @extra_tx_headroom: headroom to reserve in each transmit skb 1442 * for use by the driver (e.g. for transmit headers.) 1443 * 1444 * @channel_change_time: time (in microseconds) it takes to change channels. 1445 * 1446 * @max_signal: Maximum value for signal (rssi) in RX information, used 1447 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB 1448 * 1449 * @max_listen_interval: max listen interval in units of beacon interval 1450 * that HW supports 1451 * 1452 * @queues: number of available hardware transmit queues for 1453 * data packets. WMM/QoS requires at least four, these 1454 * queues need to have configurable access parameters. 1455 * 1456 * @rate_control_algorithm: rate control algorithm for this hardware. 1457 * If unset (NULL), the default algorithm will be used. Must be 1458 * set before calling ieee80211_register_hw(). 1459 * 1460 * @vif_data_size: size (in bytes) of the drv_priv data area 1461 * within &struct ieee80211_vif. 1462 * @sta_data_size: size (in bytes) of the drv_priv data area 1463 * within &struct ieee80211_sta. 1464 * @chanctx_data_size: size (in bytes) of the drv_priv data area 1465 * within &struct ieee80211_chanctx_conf. 1466 * 1467 * @max_rates: maximum number of alternate rate retry stages the hw 1468 * can handle. 1469 * @max_report_rates: maximum number of alternate rate retry stages 1470 * the hw can report back. 1471 * @max_rate_tries: maximum number of tries for each stage 1472 * 1473 * @napi_weight: weight used for NAPI polling. You must specify an 1474 * appropriate value here if a napi_poll operation is provided 1475 * by your driver. 1476 * 1477 * @max_rx_aggregation_subframes: maximum buffer size (number of 1478 * sub-frames) to be used for A-MPDU block ack receiver 1479 * aggregation. 1480 * This is only relevant if the device has restrictions on the 1481 * number of subframes, if it relies on mac80211 to do reordering 1482 * it shouldn't be set. 1483 * 1484 * @max_tx_aggregation_subframes: maximum number of subframes in an 1485 * aggregate an HT driver will transmit, used by the peer as a 1486 * hint to size its reorder buffer. 1487 * 1488 * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX 1489 * (if %IEEE80211_HW_QUEUE_CONTROL is set) 1490 * 1491 * @radiotap_mcs_details: lists which MCS information can the HW 1492 * reports, by default it is set to _MCS, _GI and _BW but doesn't 1493 * include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_* values, only 1494 * adding _BW is supported today. 1495 * 1496 * @radiotap_vht_details: lists which VHT MCS information the HW reports, 1497 * the default is _GI | _BANDWIDTH. 1498 * Use the %IEEE80211_RADIOTAP_VHT_KNOWN_* values. 1499 * 1500 * @netdev_features: netdev features to be set in each netdev created 1501 * from this HW. Note only HW checksum features are currently 1502 * compatible with mac80211. Other feature bits will be rejected. 1503 */ 1504struct ieee80211_hw { 1505 struct ieee80211_conf conf; 1506 struct wiphy *wiphy; 1507 const char *rate_control_algorithm; 1508 void *priv; 1509 u32 flags; 1510 unsigned int extra_tx_headroom; 1511 int channel_change_time; 1512 int vif_data_size; 1513 int sta_data_size; 1514 int chanctx_data_size; 1515 int napi_weight; 1516 u16 queues; 1517 u16 max_listen_interval; 1518 s8 max_signal; 1519 u8 max_rates; 1520 u8 max_report_rates; 1521 u8 max_rate_tries; 1522 u8 max_rx_aggregation_subframes; 1523 u8 max_tx_aggregation_subframes; 1524 u8 offchannel_tx_hw_queue; 1525 u8 radiotap_mcs_details; 1526 u16 radiotap_vht_details; 1527 netdev_features_t netdev_features; 1528}; 1529 1530/** 1531 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy 1532 * 1533 * @wiphy: the &struct wiphy which we want to query 1534 * 1535 * mac80211 drivers can use this to get to their respective 1536 * &struct ieee80211_hw. Drivers wishing to get to their own private 1537 * structure can then access it via hw->priv. Note that mac802111 drivers should 1538 * not use wiphy_priv() to try to get their private driver structure as this 1539 * is already used internally by mac80211. 1540 * 1541 * Return: The mac80211 driver hw struct of @wiphy. 1542 */ 1543struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); 1544 1545/** 1546 * SET_IEEE80211_DEV - set device for 802.11 hardware 1547 * 1548 * @hw: the &struct ieee80211_hw to set the device for 1549 * @dev: the &struct device of this 802.11 device 1550 */ 1551static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) 1552{ 1553 set_wiphy_dev(hw->wiphy, dev); 1554} 1555 1556/** 1557 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware 1558 * 1559 * @hw: the &struct ieee80211_hw to set the MAC address for 1560 * @addr: the address to set 1561 */ 1562static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) 1563{ 1564 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); 1565} 1566 1567static inline struct ieee80211_rate * 1568ieee80211_get_tx_rate(const struct ieee80211_hw *hw, 1569 const struct ieee80211_tx_info *c) 1570{ 1571 if (WARN_ON_ONCE(c->control.rates[0].idx < 0)) 1572 return NULL; 1573 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; 1574} 1575 1576static inline struct ieee80211_rate * 1577ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, 1578 const struct ieee80211_tx_info *c) 1579{ 1580 if (c->control.rts_cts_rate_idx < 0) 1581 return NULL; 1582 return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; 1583} 1584 1585static inline struct ieee80211_rate * 1586ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, 1587 const struct ieee80211_tx_info *c, int idx) 1588{ 1589 if (c->control.rates[idx + 1].idx < 0) 1590 return NULL; 1591 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; 1592} 1593 1594/** 1595 * ieee80211_free_txskb - free TX skb 1596 * @hw: the hardware 1597 * @skb: the skb 1598 * 1599 * Free a transmit skb. Use this funtion when some failure 1600 * to transmit happened and thus status cannot be reported. 1601 */ 1602void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb); 1603 1604/** 1605 * DOC: Hardware crypto acceleration 1606 * 1607 * mac80211 is capable of taking advantage of many hardware 1608 * acceleration designs for encryption and decryption operations. 1609 * 1610 * The set_key() callback in the &struct ieee80211_ops for a given 1611 * device is called to enable hardware acceleration of encryption and 1612 * decryption. The callback takes a @sta parameter that will be NULL 1613 * for default keys or keys used for transmission only, or point to 1614 * the station information for the peer for individual keys. 1615 * Multiple transmission keys with the same key index may be used when 1616 * VLANs are configured for an access point. 1617 * 1618 * When transmitting, the TX control data will use the @hw_key_idx 1619 * selected by the driver by modifying the &struct ieee80211_key_conf 1620 * pointed to by the @key parameter to the set_key() function. 1621 * 1622 * The set_key() call for the %SET_KEY command should return 0 if 1623 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be 1624 * added; if you return 0 then hw_key_idx must be assigned to the 1625 * hardware key index, you are free to use the full u8 range. 1626 * 1627 * When the cmd is %DISABLE_KEY then it must succeed. 1628 * 1629 * Note that it is permissible to not decrypt a frame even if a key 1630 * for it has been uploaded to hardware, the stack will not make any 1631 * decision based on whether a key has been uploaded or not but rather 1632 * based on the receive flags. 1633 * 1634 * The &struct ieee80211_key_conf structure pointed to by the @key 1635 * parameter is guaranteed to be valid until another call to set_key() 1636 * removes it, but it can only be used as a cookie to differentiate 1637 * keys. 1638 * 1639 * In TKIP some HW need to be provided a phase 1 key, for RX decryption 1640 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key 1641 * handler. 1642 * The update_tkip_key() call updates the driver with the new phase 1 key. 1643 * This happens every time the iv16 wraps around (every 65536 packets). The 1644 * set_key() call will happen only once for each key (unless the AP did 1645 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is 1646 * provided by update_tkip_key only. The trigger that makes mac80211 call this 1647 * handler is software decryption with wrap around of iv16. 1648 * 1649 * The set_default_unicast_key() call updates the default WEP key index 1650 * configured to the hardware for WEP encryption type. This is required 1651 * for devices that support offload of data packets (e.g. ARP responses). 1652 */ 1653 1654/** 1655 * DOC: Powersave support 1656 * 1657 * mac80211 has support for various powersave implementations. 1658 * 1659 * First, it can support hardware that handles all powersaving by itself, 1660 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware 1661 * flag. In that case, it will be told about the desired powersave mode 1662 * with the %IEEE80211_CONF_PS flag depending on the association status. 1663 * The hardware must take care of sending nullfunc frames when necessary, 1664 * i.e. when entering and leaving powersave mode. The hardware is required 1665 * to look at the AID in beacons and signal to the AP that it woke up when 1666 * it finds traffic directed to it. 1667 * 1668 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in 1669 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused 1670 * with hardware wakeup and sleep states. Driver is responsible for waking 1671 * up the hardware before issuing commands to the hardware and putting it 1672 * back to sleep at appropriate times. 1673 * 1674 * When PS is enabled, hardware needs to wakeup for beacons and receive the 1675 * buffered multicast/broadcast frames after the beacon. Also it must be 1676 * possible to send frames and receive the acknowledment frame. 1677 * 1678 * Other hardware designs cannot send nullfunc frames by themselves and also 1679 * need software support for parsing the TIM bitmap. This is also supported 1680 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and 1681 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still 1682 * required to pass up beacons. The hardware is still required to handle 1683 * waking up for multicast traffic; if it cannot the driver must handle that 1684 * as best as it can, mac80211 is too slow to do that. 1685 * 1686 * Dynamic powersave is an extension to normal powersave in which the 1687 * hardware stays awake for a user-specified period of time after sending a 1688 * frame so that reply frames need not be buffered and therefore delayed to 1689 * the next wakeup. It's compromise of getting good enough latency when 1690 * there's data traffic and still saving significantly power in idle 1691 * periods. 1692 * 1693 * Dynamic powersave is simply supported by mac80211 enabling and disabling 1694 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS 1695 * flag and mac80211 will handle everything automatically. Additionally, 1696 * hardware having support for the dynamic PS feature may set the 1697 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support 1698 * dynamic PS mode itself. The driver needs to look at the 1699 * @dynamic_ps_timeout hardware configuration value and use it that value 1700 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable 1701 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS 1702 * enabled whenever user has enabled powersave. 1703 * 1704 * Driver informs U-APSD client support by enabling 1705 * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the 1706 * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS 1707 * Nullfunc frames and stay awake until the service period has ended. To 1708 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames 1709 * from that AC are transmitted with powersave enabled. 1710 * 1711 * Note: U-APSD client mode is not yet supported with 1712 * %IEEE80211_HW_PS_NULLFUNC_STACK. 1713 */ 1714 1715/** 1716 * DOC: Beacon filter support 1717 * 1718 * Some hardware have beacon filter support to reduce host cpu wakeups 1719 * which will reduce system power consumption. It usually works so that 1720 * the firmware creates a checksum of the beacon but omits all constantly 1721 * changing elements (TSF, TIM etc). Whenever the checksum changes the 1722 * beacon is forwarded to the host, otherwise it will be just dropped. That 1723 * way the host will only receive beacons where some relevant information 1724 * (for example ERP protection or WMM settings) have changed. 1725 * 1726 * Beacon filter support is advertised with the %IEEE80211_VIF_BEACON_FILTER 1727 * interface capability. The driver needs to enable beacon filter support 1728 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When 1729 * power save is enabled, the stack will not check for beacon loss and the 1730 * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). 1731 * 1732 * The time (or number of beacons missed) until the firmware notifies the 1733 * driver of a beacon loss event (which in turn causes the driver to call 1734 * ieee80211_beacon_loss()) should be configurable and will be controlled 1735 * by mac80211 and the roaming algorithm in the future. 1736 * 1737 * Since there may be constantly changing information elements that nothing 1738 * in the software stack cares about, we will, in the future, have mac80211 1739 * tell the driver which information elements are interesting in the sense 1740 * that we want to see changes in them. This will include 1741 * - a list of information element IDs 1742 * - a list of OUIs for the vendor information element 1743 * 1744 * Ideally, the hardware would filter out any beacons without changes in the 1745 * requested elements, but if it cannot support that it may, at the expense 1746 * of some efficiency, filter out only a subset. For example, if the device 1747 * doesn't support checking for OUIs it should pass up all changes in all 1748 * vendor information elements. 1749 * 1750 * Note that change, for the sake of simplification, also includes information 1751 * elements appearing or disappearing from the beacon. 1752 * 1753 * Some hardware supports an "ignore list" instead, just make sure nothing 1754 * that was requested is on the ignore list, and include commonly changing 1755 * information element IDs in the ignore list, for example 11 (BSS load) and 1756 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, 1757 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility 1758 * it could also include some currently unused IDs. 1759 * 1760 * 1761 * In addition to these capabilities, hardware should support notifying the 1762 * host of changes in the beacon RSSI. This is relevant to implement roaming 1763 * when no traffic is flowing (when traffic is flowing we see the RSSI of 1764 * the received data packets). This can consist in notifying the host when 1765 * the RSSI changes significantly or when it drops below or rises above 1766 * configurable thresholds. In the future these thresholds will also be 1767 * configured by mac80211 (which gets them from userspace) to implement 1768 * them as the roaming algorithm requires. 1769 * 1770 * If the hardware cannot implement this, the driver should ask it to 1771 * periodically pass beacon frames to the host so that software can do the 1772 * signal strength threshold checking. 1773 */ 1774 1775/** 1776 * DOC: Spatial multiplexing power save 1777 * 1778 * SMPS (Spatial multiplexing power save) is a mechanism to conserve 1779 * power in an 802.11n implementation. For details on the mechanism 1780 * and rationale, please refer to 802.11 (as amended by 802.11n-2009) 1781 * "11.2.3 SM power save". 1782 * 1783 * The mac80211 implementation is capable of sending action frames 1784 * to update the AP about the station's SMPS mode, and will instruct 1785 * the driver to enter the specific mode. It will also announce the 1786 * requested SMPS mode during the association handshake. Hardware 1787 * support for this feature is required, and can be indicated by 1788 * hardware flags. 1789 * 1790 * The default mode will be "automatic", which nl80211/cfg80211 1791 * defines to be dynamic SMPS in (regular) powersave, and SMPS 1792 * turned off otherwise. 1793 * 1794 * To support this feature, the driver must set the appropriate 1795 * hardware support flags, and handle the SMPS flag to the config() 1796 * operation. It will then with this mechanism be instructed to 1797 * enter the requested SMPS mode while associated to an HT AP. 1798 */ 1799 1800/** 1801 * DOC: Frame filtering 1802 * 1803 * mac80211 requires to see many management frames for proper 1804 * operation, and users may want to see many more frames when 1805 * in monitor mode. However, for best CPU usage and power consumption, 1806 * having as few frames as possible percolate through the stack is 1807 * desirable. Hence, the hardware should filter as much as possible. 1808 * 1809 * To achieve this, mac80211 uses filter flags (see below) to tell 1810 * the driver's configure_filter() function which frames should be 1811 * passed to mac80211 and which should be filtered out. 1812 * 1813 * Before configure_filter() is invoked, the prepare_multicast() 1814 * callback is invoked with the parameters @mc_count and @mc_list 1815 * for the combined multicast address list of all virtual interfaces. 1816 * It's use is optional, and it returns a u64 that is passed to 1817 * configure_filter(). Additionally, configure_filter() has the 1818 * arguments @changed_flags telling which flags were changed and 1819 * @total_flags with the new flag states. 1820 * 1821 * If your device has no multicast address filters your driver will 1822 * need to check both the %FIF_ALLMULTI flag and the @mc_count 1823 * parameter to see whether multicast frames should be accepted 1824 * or dropped. 1825 * 1826 * All unsupported flags in @total_flags must be cleared. 1827 * Hardware does not support a flag if it is incapable of _passing_ 1828 * the frame to the stack. Otherwise the driver must ignore 1829 * the flag, but not clear it. 1830 * You must _only_ clear the flag (announce no support for the 1831 * flag to mac80211) if you are not able to pass the packet type 1832 * to the stack (so the hardware always filters it). 1833 * So for example, you should clear @FIF_CONTROL, if your hardware 1834 * always filters control frames. If your hardware always passes 1835 * control frames to the kernel and is incapable of filtering them, 1836 * you do _not_ clear the @FIF_CONTROL flag. 1837 * This rule applies to all other FIF flags as well. 1838 */ 1839 1840/** 1841 * DOC: AP support for powersaving clients 1842 * 1843 * In order to implement AP and P2P GO modes, mac80211 has support for 1844 * client powersaving, both "legacy" PS (PS-Poll/null data) and uAPSD. 1845 * There currently is no support for sAPSD. 1846 * 1847 * There is one assumption that mac80211 makes, namely that a client 1848 * will not poll with PS-Poll and trigger with uAPSD at the same time. 1849 * Both are supported, and both can be used by the same client, but 1850 * they can't be used concurrently by the same client. This simplifies 1851 * the driver code. 1852 * 1853 * The first thing to keep in mind is that there is a flag for complete 1854 * driver implementation: %IEEE80211_HW_AP_LINK_PS. If this flag is set, 1855 * mac80211 expects the driver to handle most of the state machine for 1856 * powersaving clients and will ignore the PM bit in incoming frames. 1857 * Drivers then use ieee80211_sta_ps_transition() to inform mac80211 of 1858 * stations' powersave transitions. In this mode, mac80211 also doesn't 1859 * handle PS-Poll/uAPSD. 1860 * 1861 * In the mode without %IEEE80211_HW_AP_LINK_PS, mac80211 will check the 1862 * PM bit in incoming frames for client powersave transitions. When a 1863 * station goes to sleep, we will stop transmitting to it. There is, 1864 * however, a race condition: a station might go to sleep while there is 1865 * data buffered on hardware queues. If the device has support for this 1866 * it will reject frames, and the driver should give the frames back to 1867 * mac80211 with the %IEEE80211_TX_STAT_TX_FILTERED flag set which will 1868 * cause mac80211 to retry the frame when the station wakes up. The 1869 * driver is also notified of powersave transitions by calling its 1870 * @sta_notify callback. 1871 * 1872 * When the station is asleep, it has three choices: it can wake up, 1873 * it can PS-Poll, or it can possibly start a uAPSD service period. 1874 * Waking up is implemented by simply transmitting all buffered (and 1875 * filtered) frames to the station. This is the easiest case. When 1876 * the station sends a PS-Poll or a uAPSD trigger frame, mac80211 1877 * will inform the driver of this with the @allow_buffered_frames 1878 * callback; this callback is optional. mac80211 will then transmit 1879 * the frames as usual and set the %IEEE80211_TX_CTL_NO_PS_BUFFER 1880 * on each frame. The last frame in the service period (or the only 1881 * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to 1882 * indicate that it ends the service period; as this frame must have 1883 * TX status report it also sets %IEEE80211_TX_CTL_REQ_TX_STATUS. 1884 * When TX status is reported for this frame, the service period is 1885 * marked has having ended and a new one can be started by the peer. 1886 * 1887 * Additionally, non-bufferable MMPDUs can also be transmitted by 1888 * mac80211 with the %IEEE80211_TX_CTL_NO_PS_BUFFER set in them. 1889 * 1890 * Another race condition can happen on some devices like iwlwifi 1891 * when there are frames queued for the station and it wakes up 1892 * or polls; the frames that are already queued could end up being 1893 * transmitted first instead, causing reordering and/or wrong 1894 * processing of the EOSP. The cause is that allowing frames to be 1895 * transmitted to a certain station is out-of-band communication to 1896 * the device. To allow this problem to be solved, the driver can 1897 * call ieee80211_sta_block_awake() if frames are buffered when it 1898 * is notified that the station went to sleep. When all these frames 1899 * have been filtered (see above), it must call the function again 1900 * to indicate that the station is no longer blocked. 1901 * 1902 * If the driver buffers frames in the driver for aggregation in any 1903 * way, it must use the ieee80211_sta_set_buffered() call when it is 1904 * notified of the station going to sleep to inform mac80211 of any 1905 * TIDs that have frames buffered. Note that when a station wakes up 1906 * this information is reset (hence the requirement to call it when 1907 * informed of the station going to sleep). Then, when a service 1908 * period starts for any reason, @release_buffered_frames is called 1909 * with the number of frames to be released and which TIDs they are 1910 * to come from. In this case, the driver is responsible for setting 1911 * the EOSP (for uAPSD) and MORE_DATA bits in the released frames, 1912 * to help the @more_data paramter is passed to tell the driver if 1913 * there is more data on other TIDs -- the TIDs to release frames 1914 * from are ignored since mac80211 doesn't know how many frames the 1915 * buffers for those TIDs contain. 1916 * 1917 * If the driver also implement GO mode, where absence periods may 1918 * shorten service periods (or abort PS-Poll responses), it must 1919 * filter those response frames except in the case of frames that 1920 * are buffered in the driver -- those must remain buffered to avoid 1921 * reordering. Because it is possible that no frames are released 1922 * in this case, the driver must call ieee80211_sta_eosp_irqsafe() 1923 * to indicate to mac80211 that the service period ended anyway. 1924 * 1925 * Finally, if frames from multiple TIDs are released from mac80211 1926 * but the driver might reorder them, it must clear & set the flags 1927 * appropriately (only the last frame may have %IEEE80211_TX_STATUS_EOSP) 1928 * and also take care of the EOSP and MORE_DATA bits in the frame. 1929 * The driver may also use ieee80211_sta_eosp_irqsafe() in this case. 1930 */ 1931 1932/** 1933 * DOC: HW queue control 1934 * 1935 * Before HW queue control was introduced, mac80211 only had a single static 1936 * assignment of per-interface AC software queues to hardware queues. This 1937 * was problematic for a few reasons: 1938 * 1) off-channel transmissions might get stuck behind other frames 1939 * 2) multiple virtual interfaces couldn't be handled correctly 1940 * 3) after-DTIM frames could get stuck behind other frames 1941 * 1942 * To solve this, hardware typically uses multiple different queues for all 1943 * the different usages, and this needs to be propagated into mac80211 so it 1944 * won't have the same problem with the software queues. 1945 * 1946 * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability 1947 * flag that tells it that the driver implements its own queue control. To do 1948 * so, the driver will set up the various queues in each &struct ieee80211_vif 1949 * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will 1950 * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and 1951 * if necessary will queue the frame on the right software queue that mirrors 1952 * the hardware queue. 1953 * Additionally, the driver has to then use these HW queue IDs for the queue 1954 * management functions (ieee80211_stop_queue() et al.) 1955 * 1956 * The driver is free to set up the queue mappings as needed, multiple virtual 1957 * interfaces may map to the same hardware queues if needed. The setup has to 1958 * happen during add_interface or change_interface callbacks. For example, a 1959 * driver supporting station+station and station+AP modes might decide to have 1960 * 10 hardware queues to handle different scenarios: 1961 * 1962 * 4 AC HW queues for 1st vif: 0, 1, 2, 3 1963 * 4 AC HW queues for 2nd vif: 4, 5, 6, 7 1964 * after-DTIM queue for AP: 8 1965 * off-channel queue: 9 1966 * 1967 * It would then set up the hardware like this: 1968 * hw.offchannel_tx_hw_queue = 9 1969 * 1970 * and the first virtual interface that is added as follows: 1971 * vif.hw_queue[IEEE80211_AC_VO] = 0 1972 * vif.hw_queue[IEEE80211_AC_VI] = 1 1973 * vif.hw_queue[IEEE80211_AC_BE] = 2 1974 * vif.hw_queue[IEEE80211_AC_BK] = 3 1975 * vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE 1976 * and the second virtual interface with 4-7. 1977 * 1978 * If queue 6 gets full, for example, mac80211 would only stop the second 1979 * virtual interface's BE queue since virtual interface queues are per AC. 1980 * 1981 * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE 1982 * whenever the queue is not used (i.e. the interface is not in AP mode) if the 1983 * queue could potentially be shared since mac80211 will look at cab_queue when 1984 * a queue is stopped/woken even if the interface is not in AP mode. 1985 */ 1986 1987/** 1988 * enum ieee80211_filter_flags - hardware filter flags 1989 * 1990 * These flags determine what the filter in hardware should be 1991 * programmed to let through and what should not be passed to the 1992 * stack. It is always safe to pass more frames than requested, 1993 * but this has negative impact on power consumption. 1994 * 1995 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, 1996 * think of the BSS as your network segment and then this corresponds 1997 * to the regular ethernet device promiscuous mode. 1998 * 1999 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested 2000 * by the user or if the hardware is not capable of filtering by 2001 * multicast address. 2002 * 2003 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the 2004 * %RX_FLAG_FAILED_FCS_CRC for them) 2005 * 2006 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set 2007 * the %RX_FLAG_FAILED_PLCP_CRC for them 2008 * 2009 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate 2010 * to the hardware that it should not filter beacons or probe responses 2011 * by BSSID. Filtering them can greatly reduce the amount of processing 2012 * mac80211 needs to do and the amount of CPU wakeups, so you should 2013 * honour this flag if possible. 2014 * 2015 * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS 2016 * is not set then only those addressed to this station. 2017 * 2018 * @FIF_OTHER_BSS: pass frames destined to other BSSes 2019 * 2020 * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only 2021 * those addressed to this station. 2022 * 2023 * @FIF_PROBE_REQ: pass probe request frames 2024 */ 2025enum ieee80211_filter_flags { 2026 FIF_PROMISC_IN_BSS = 1<<0, 2027 FIF_ALLMULTI = 1<<1, 2028 FIF_FCSFAIL = 1<<2, 2029 FIF_PLCPFAIL = 1<<3, 2030 FIF_BCN_PRBRESP_PROMISC = 1<<4, 2031 FIF_CONTROL = 1<<5, 2032 FIF_OTHER_BSS = 1<<6, 2033 FIF_PSPOLL = 1<<7, 2034 FIF_PROBE_REQ = 1<<8, 2035}; 2036 2037/** 2038 * enum ieee80211_ampdu_mlme_action - A-MPDU actions 2039 * 2040 * These flags are used with the ampdu_action() callback in 2041 * &struct ieee80211_ops to indicate which action is needed. 2042 * 2043 * Note that drivers MUST be able to deal with a TX aggregation 2044 * session being stopped even before they OK'ed starting it by 2045 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer 2046 * might receive the addBA frame and send a delBA right away! 2047 * 2048 * @IEEE80211_AMPDU_RX_START: start RX aggregation 2049 * @IEEE80211_AMPDU_RX_STOP: stop RX aggregation 2050 * @IEEE80211_AMPDU_TX_START: start TX aggregation 2051 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational 2052 * @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting 2053 * queued packets, now unaggregated. After all packets are transmitted the 2054 * driver has to call ieee80211_stop_tx_ba_cb_irqsafe(). 2055 * @IEEE80211_AMPDU_TX_STOP_FLUSH: stop TX aggregation and flush all packets, 2056 * called when the station is removed. There's no need or reason to call 2057 * ieee80211_stop_tx_ba_cb_irqsafe() in this case as mac80211 assumes the 2058 * session is gone and removes the station. 2059 * @IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: called when TX aggregation is stopped 2060 * but the driver hasn't called ieee80211_stop_tx_ba_cb_irqsafe() yet and 2061 * now the connection is dropped and the station will be removed. Drivers 2062 * should clean up and drop remaining packets when this is called. 2063 */ 2064enum ieee80211_ampdu_mlme_action { 2065 IEEE80211_AMPDU_RX_START, 2066 IEEE80211_AMPDU_RX_STOP, 2067 IEEE80211_AMPDU_TX_START, 2068 IEEE80211_AMPDU_TX_STOP_CONT, 2069 IEEE80211_AMPDU_TX_STOP_FLUSH, 2070 IEEE80211_AMPDU_TX_STOP_FLUSH_CONT, 2071 IEEE80211_AMPDU_TX_OPERATIONAL, 2072}; 2073 2074/** 2075 * enum ieee80211_frame_release_type - frame release reason 2076 * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll 2077 * @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to 2078 * frame received on trigger-enabled AC 2079 */ 2080enum ieee80211_frame_release_type { 2081 IEEE80211_FRAME_RELEASE_PSPOLL, 2082 IEEE80211_FRAME_RELEASE_UAPSD, 2083}; 2084 2085/** 2086 * enum ieee80211_rate_control_changed - flags to indicate what changed 2087 * 2088 * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit 2089 * to this station changed. 2090 * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed. 2091 * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer 2092 * changed (in IBSS mode) due to discovering more information about 2093 * the peer. 2094 */ 2095enum ieee80211_rate_control_changed { 2096 IEEE80211_RC_BW_CHANGED = BIT(0), 2097 IEEE80211_RC_SMPS_CHANGED = BIT(1), 2098 IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), 2099}; 2100 2101/** 2102 * struct ieee80211_ops - callbacks from mac80211 to the driver 2103 * 2104 * This structure contains various callbacks that the driver may 2105 * handle or, in some cases, must handle, for example to configure 2106 * the hardware to a new channel or to transmit a frame. 2107 * 2108 * @tx: Handler that 802.11 module calls for each transmitted frame. 2109 * skb contains the buffer starting from the IEEE 802.11 header. 2110 * The low-level driver should send the frame out based on 2111 * configuration in the TX control data. This handler should, 2112 * preferably, never fail and stop queues appropriately. 2113 * Must be atomic. 2114 * 2115 * @start: Called before the first netdevice attached to the hardware 2116 * is enabled. This should turn on the hardware and must turn on 2117 * frame reception (for possibly enabled monitor interfaces.) 2118 * Returns negative error codes, these may be seen in userspace, 2119 * or zero. 2120 * When the device is started it should not have a MAC address 2121 * to avoid acknowledging frames before a non-monitor device 2122 * is added. 2123 * Must be implemented and can sleep. 2124 * 2125 * @stop: Called after last netdevice attached to the hardware 2126 * is disabled. This should turn off the hardware (at least 2127 * it must turn off frame reception.) 2128 * May be called right after add_interface if that rejects 2129 * an interface. If you added any work onto the mac80211 workqueue 2130 * you should ensure to cancel it on this callback. 2131 * Must be implemented and can sleep. 2132 * 2133 * @suspend: Suspend the device; mac80211 itself will quiesce before and 2134 * stop transmitting and doing any other configuration, and then 2135 * ask the device to suspend. This is only invoked when WoWLAN is 2136 * configured, otherwise the device is deconfigured completely and 2137 * reconfigured at resume time. 2138 * The driver may also impose special conditions under which it 2139 * wants to use the "normal" suspend (deconfigure), say if it only 2140 * supports WoWLAN when the device is associated. In this case, it 2141 * must return 1 from this function. 2142 * 2143 * @resume: If WoWLAN was configured, this indicates that mac80211 is 2144 * now resuming its operation, after this the device must be fully 2145 * functional again. If this returns an error, the only way out is 2146 * to also unregister the device. If it returns 1, then mac80211 2147 * will also go through the regular complete restart on resume. 2148 * 2149 * @set_wakeup: Enable or disable wakeup when WoWLAN configuration is 2150 * modified. The reason is that device_set_wakeup_enable() is 2151 * supposed to be called when the configuration changes, not only 2152 * in suspend(). 2153 * 2154 * @add_interface: Called when a netdevice attached to the hardware is 2155 * enabled. Because it is not called for monitor mode devices, @start 2156 * and @stop must be implemented. 2157 * The driver should perform any initialization it needs before 2158 * the device can be enabled. The initial configuration for the 2159 * interface is given in the conf parameter. 2160 * The callback may refuse to add an interface by returning a 2161 * negative error code (which will be seen in userspace.) 2162 * Must be implemented and can sleep. 2163 * 2164 * @change_interface: Called when a netdevice changes type. This callback 2165 * is optional, but only if it is supported can interface types be 2166 * switched while the interface is UP. The callback may sleep. 2167 * Note that while an interface is being switched, it will not be 2168 * found by the interface iteration callbacks. 2169 * 2170 * @remove_interface: Notifies a driver that an interface is going down. 2171 * The @stop callback is called after this if it is the last interface 2172 * and no monitor interfaces are present. 2173 * When all interfaces are removed, the MAC address in the hardware 2174 * must be cleared so the device no longer acknowledges packets, 2175 * the mac_addr member of the conf structure is, however, set to the 2176 * MAC address of the device going away. 2177 * Hence, this callback must be implemented. It can sleep. 2178 * 2179 * @add_interface_debugfs: Drivers can use this callback to add debugfs files 2180 * when a vif is added to mac80211. This callback and 2181 * @remove_interface_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2182 * conditional. @remove_interface_debugfs must be provided for cleanup. 2183 * This callback can sleep. 2184 * 2185 * @remove_interface_debugfs: Remove the debugfs files which were added using 2186 * @add_interface_debugfs. This callback must remove all debugfs entries 2187 * that were added because mac80211 only removes interface debugfs when the 2188 * interface is destroyed, not when it is removed from the driver. 2189 * This callback can sleep. 2190 * 2191 * @config: Handler for configuration requests. IEEE 802.11 code calls this 2192 * function to change hardware configuration, e.g., channel. 2193 * This function should never fail but returns a negative error code 2194 * if it does. The callback can sleep. 2195 * 2196 * @bss_info_changed: Handler for configuration requests related to BSS 2197 * parameters that may vary during BSS's lifespan, and may affect low 2198 * level driver (e.g. assoc/disassoc status, erp parameters). 2199 * This function should not be used if no BSS has been set, unless 2200 * for association indication. The @changed parameter indicates which 2201 * of the bss parameters has changed when a call is made. The callback 2202 * can sleep. 2203 * 2204 * @prepare_multicast: Prepare for multicast filter configuration. 2205 * This callback is optional, and its return value is passed 2206 * to configure_filter(). This callback must be atomic. 2207 * 2208 * @configure_filter: Configure the device's RX filter. 2209 * See the section "Frame filtering" for more information. 2210 * This callback must be implemented and can sleep. 2211 * 2212 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit 2213 * must be set or cleared for a given STA. Must be atomic. 2214 * 2215 * @set_key: See the section "Hardware crypto acceleration" 2216 * This callback is only called between add_interface and 2217 * remove_interface calls, i.e. while the given virtual interface 2218 * is enabled. 2219 * Returns a negative error code if the key can't be added. 2220 * The callback can sleep. 2221 * 2222 * @update_tkip_key: See the section "Hardware crypto acceleration" 2223 * This callback will be called in the context of Rx. Called for drivers 2224 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. 2225 * The callback must be atomic. 2226 * 2227 * @set_rekey_data: If the device supports GTK rekeying, for example while the 2228 * host is suspended, it can assign this callback to retrieve the data 2229 * necessary to do GTK rekeying, this is the KEK, KCK and replay counter. 2230 * After rekeying was done it should (for example during resume) notify 2231 * userspace of the new replay counter using ieee80211_gtk_rekey_notify(). 2232 * 2233 * @set_default_unicast_key: Set the default (unicast) key index, useful for 2234 * WEP when the device sends data packets autonomously, e.g. for ARP 2235 * offloading. The index can be 0-3, or -1 for unsetting it. 2236 * 2237 * @hw_scan: Ask the hardware to service the scan request, no need to start 2238 * the scan state machine in stack. The scan must honour the channel 2239 * configuration done by the regulatory agent in the wiphy's 2240 * registered bands. The hardware (or the driver) needs to make sure 2241 * that power save is disabled. 2242 * The @req ie/ie_len members are rewritten by mac80211 to contain the 2243 * entire IEs after the SSID, so that drivers need not look at these 2244 * at all but just send them after the SSID -- mac80211 includes the 2245 * (extended) supported rates and HT information (where applicable). 2246 * When the scan finishes, ieee80211_scan_completed() must be called; 2247 * note that it also must be called when the scan cannot finish due to 2248 * any error unless this callback returned a negative error code. 2249 * The callback can sleep. 2250 * 2251 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan. 2252 * The driver should ask the hardware to cancel the scan (if possible), 2253 * but the scan will be completed only after the driver will call 2254 * ieee80211_scan_completed(). 2255 * This callback is needed for wowlan, to prevent enqueueing a new 2256 * scan_work after the low-level driver was already suspended. 2257 * The callback can sleep. 2258 * 2259 * @sched_scan_start: Ask the hardware to start scanning repeatedly at 2260 * specific intervals. The driver must call the 2261 * ieee80211_sched_scan_results() function whenever it finds results. 2262 * This process will continue until sched_scan_stop is called. 2263 * 2264 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan. 2265 * 2266 * @sw_scan_start: Notifier function that is called just before a software scan 2267 * is started. Can be NULL, if the driver doesn't need this notification. 2268 * The callback can sleep. 2269 * 2270 * @sw_scan_complete: Notifier function that is called just after a 2271 * software scan finished. Can be NULL, if the driver doesn't need 2272 * this notification. 2273 * The callback can sleep. 2274 * 2275 * @get_stats: Return low-level statistics. 2276 * Returns zero if statistics are available. 2277 * The callback can sleep. 2278 * 2279 * @get_tkip_seq: If your device implements TKIP encryption in hardware this 2280 * callback should be provided to read the TKIP transmit IVs (both IV32 2281 * and IV16) for the given key from hardware. 2282 * The callback must be atomic. 2283 * 2284 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this 2285 * if the device does fragmentation by itself; if this callback is 2286 * implemented then the stack will not do fragmentation. 2287 * The callback can sleep. 2288 * 2289 * @set_rts_threshold: Configuration of RTS threshold (if device needs it) 2290 * The callback can sleep. 2291 * 2292 * @sta_add: Notifies low level driver about addition of an associated station, 2293 * AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2294 * 2295 * @sta_remove: Notifies low level driver about removal of an associated 2296 * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. 2297 * 2298 * @sta_add_debugfs: Drivers can use this callback to add debugfs files 2299 * when a station is added to mac80211's station list. This callback 2300 * and @sta_remove_debugfs should be within a CONFIG_MAC80211_DEBUGFS 2301 * conditional. This callback can sleep. 2302 * 2303 * @sta_remove_debugfs: Remove the debugfs files which were added using 2304 * @sta_add_debugfs. This callback can sleep. 2305 * 2306 * @sta_notify: Notifies low level driver about power state transition of an 2307 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating 2308 * in AP mode, this callback will not be called when the flag 2309 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. 2310 * 2311 * @sta_state: Notifies low level driver about state transition of a 2312 * station (which can be the AP, a client, IBSS/WDS/mesh peer etc.) 2313 * This callback is mutually exclusive with @sta_add/@sta_remove. 2314 * It must not fail for down transitions but may fail for transitions 2315 * up the list of states. 2316 * The callback can sleep. 2317 * 2318 * @sta_rc_update: Notifies the driver of changes to the bitrates that can be 2319 * used to transmit to the station. The changes are advertised with bits 2320 * from &enum ieee80211_rate_control_changed and the values are reflected 2321 * in the station data. This callback should only be used when the driver 2322 * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since 2323 * otherwise the rate control algorithm is notified directly. 2324 * Must be atomic. 2325 * 2326 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), 2327 * bursting) for a hardware TX queue. 2328 * Returns a negative error code on failure. 2329 * The callback can sleep. 2330 * 2331 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, 2332 * this is only used for IBSS mode BSSID merging and debugging. Is not a 2333 * required function. 2334 * The callback can sleep. 2335 * 2336 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. 2337 * Currently, this is only used for IBSS mode debugging. Is not a 2338 * required function. 2339 * The callback can sleep. 2340 * 2341 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize 2342 * with other STAs in the IBSS. This is only used in IBSS mode. This 2343 * function is optional if the firmware/hardware takes full care of 2344 * TSF synchronization. 2345 * The callback can sleep. 2346 * 2347 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. 2348 * This is needed only for IBSS mode and the result of this function is 2349 * used to determine whether to reply to Probe Requests. 2350 * Returns non-zero if this device sent the last beacon. 2351 * The callback can sleep. 2352 * 2353 * @ampdu_action: Perform a certain A-MPDU action 2354 * The RA/TID combination determines the destination and TID we want 2355 * the ampdu action to be performed for. The action is defined through 2356 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) 2357 * is the first frame we expect to perform the action on. Notice 2358 * that TX/RX_STOP can pass NULL for this parameter. 2359 * The @buf_size parameter is only valid when the action is set to 2360 * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder 2361 * buffer size (number of subframes) for this session -- the driver 2362 * may neither send aggregates containing more subframes than this 2363 * nor send aggregates in a way that lost frames would exceed the 2364 * buffer size. If just limiting the aggregate size, this would be 2365 * possible with a buf_size of 8: 2366 * - TX: 1.....7 2367 * - RX: 2....7 (lost frame #1) 2368 * - TX: 8..1... 2369 * which is invalid since #1 was now re-transmitted well past the 2370 * buffer size of 8. Correct ways to retransmit #1 would be: 2371 * - TX: 1 or 18 or 81 2372 * Even "189" would be wrong since 1 could be lost again. 2373 * 2374 * Returns a negative error code on failure. 2375 * The callback can sleep. 2376 * 2377 * @get_survey: Return per-channel survey information 2378 * 2379 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also 2380 * need to set wiphy->rfkill_poll to %true before registration, 2381 * and need to call wiphy_rfkill_set_hw_state() in the callback. 2382 * The callback can sleep. 2383 * 2384 * @set_coverage_class: Set slot time for given coverage class as specified 2385 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout 2386 * accordingly. This callback is not required and may sleep. 2387 * 2388 * @testmode_cmd: Implement a cfg80211 test mode command. 2389 * The callback can sleep. 2390 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep. 2391 * 2392 * @flush: Flush all pending frames from the hardware queue, making sure 2393 * that the hardware queues are empty. If the parameter @drop is set 2394 * to %true, pending frames may be dropped. The callback can sleep. 2395 * 2396 * @channel_switch: Drivers that need (or want) to offload the channel 2397 * switch operation for CSAs received from the AP may implement this 2398 * callback. They must then call ieee80211_chswitch_done() to indicate 2399 * completion of the channel switch. 2400 * 2401 * @napi_poll: Poll Rx queue for incoming data frames. 2402 * 2403 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2404 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2405 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2406 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2407 * 2408 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2409 * 2410 * @remain_on_channel: Starts an off-channel period on the given channel, must 2411 * call back to ieee80211_ready_on_channel() when on that channel. Note 2412 * that normal channel traffic is not stopped as this is intended for hw 2413 * offload. Frames to transmit on the off-channel channel are transmitted 2414 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the 2415 * duration (which will always be non-zero) expires, the driver must call 2416 * ieee80211_remain_on_channel_expired(). 2417 * Note that this callback may be called while the device is in IDLE and 2418 * must be accepted in this case. 2419 * This callback may sleep. 2420 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is 2421 * aborted before it expires. This callback may sleep. 2422 * 2423 * @set_ringparam: Set tx and rx ring sizes. 2424 * 2425 * @get_ringparam: Get tx and rx ring current and maximum sizes. 2426 * 2427 * @tx_frames_pending: Check if there is any pending frame in the hardware 2428 * queues before entering power save. 2429 * 2430 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection 2431 * when transmitting a frame. Currently only legacy rates are handled. 2432 * The callback can sleep. 2433 * @rssi_callback: Notify driver when the average RSSI goes above/below 2434 * thresholds that were registered previously. The callback can sleep. 2435 * 2436 * @release_buffered_frames: Release buffered frames according to the given 2437 * parameters. In the case where the driver buffers some frames for 2438 * sleeping stations mac80211 will use this callback to tell the driver 2439 * to release some frames, either for PS-poll or uAPSD. 2440 * Note that if the @more_data paramter is %false the driver must check 2441 * if there are more frames on the given TIDs, and if there are more than 2442 * the frames being released then it must still set the more-data bit in 2443 * the frame. If the @more_data parameter is %true, then of course the 2444 * more-data bit must always be set. 2445 * The @tids parameter tells the driver which TIDs to release frames 2446 * from, for PS-poll it will always have only a single bit set. 2447 * In the case this is used for a PS-poll initiated release, the 2448 * @num_frames parameter will always be 1 so code can be shared. In 2449 * this case the driver must also set %IEEE80211_TX_STATUS_EOSP flag 2450 * on the TX status (and must report TX status) so that the PS-poll 2451 * period is properly ended. This is used to avoid sending multiple 2452 * responses for a retried PS-poll frame. 2453 * In the case this is used for uAPSD, the @num_frames parameter may be 2454 * bigger than one, but the driver may send fewer frames (it must send 2455 * at least one, however). In this case it is also responsible for 2456 * setting the EOSP flag in the QoS header of the frames. Also, when the 2457 * service period ends, the driver must set %IEEE80211_TX_STATUS_EOSP 2458 * on the last frame in the SP. Alternatively, it may call the function 2459 * ieee80211_sta_eosp_irqsafe() to inform mac80211 of the end of the SP. 2460 * This callback must be atomic. 2461 * @allow_buffered_frames: Prepare device to allow the given number of frames 2462 * to go out to the given station. The frames will be sent by mac80211 2463 * via the usual TX path after this call. The TX information for frames 2464 * released will also have the %IEEE80211_TX_CTL_NO_PS_BUFFER flag set 2465 * and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case 2466 * frames from multiple TIDs are released and the driver might reorder 2467 * them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag 2468 * on the last frame and clear it on all others and also handle the EOSP 2469 * bit in the QoS header correctly. Alternatively, it can also call the 2470 * ieee80211_sta_eosp_irqsafe() function. 2471 * The @tids parameter is a bitmap and tells the driver which TIDs the 2472 * frames will be on; it will at most have two bits set. 2473 * This callback must be atomic. 2474 * 2475 * @get_et_sset_count: Ethtool API to get string-set count. 2476 * 2477 * @get_et_stats: Ethtool API to get a set of u64 stats. 2478 * 2479 * @get_et_strings: Ethtool API to get a set of strings to describe stats 2480 * and perhaps other supported types of ethtool data-sets. 2481 * 2482 * @get_rssi: Get current signal strength in dBm, the function is optional 2483 * and can sleep. 2484 * 2485 * @mgd_prepare_tx: Prepare for transmitting a management frame for association 2486 * before associated. In multi-channel scenarios, a virtual interface is 2487 * bound to a channel before it is associated, but as it isn't associated 2488 * yet it need not necessarily be given airtime, in particular since any 2489 * transmission to a P2P GO needs to be synchronized against the GO's 2490 * powersave state. mac80211 will call this function before transmitting a 2491 * management frame prior to having successfully associated to allow the 2492 * driver to give it channel time for the transmission, to get a response 2493 * and to be able to synchronize with the GO. 2494 * The callback will be called before each transmission and upon return 2495 * mac80211 will transmit the frame right away. 2496 * The callback is optional and can (should!) sleep. 2497 * 2498 * @add_chanctx: Notifies device driver about new channel context creation. 2499 * @remove_chanctx: Notifies device driver about channel context destruction. 2500 * @change_chanctx: Notifies device driver about channel context changes that 2501 * may happen when combining different virtual interfaces on the same 2502 * channel context with different settings 2503 * @assign_vif_chanctx: Notifies device driver about channel context being bound 2504 * to vif. Possible use is for hw queue remapping. 2505 * @unassign_vif_chanctx: Notifies device driver about channel context being 2506 * unbound from vif. 2507 * @start_ap: Start operation on the AP interface, this is called after all the 2508 * information in bss_conf is set and beacon can be retrieved. A channel 2509 * context is bound before this is called. Note that if the driver uses 2510 * software scan or ROC, this (and @stop_ap) isn't called when the AP is 2511 * just "paused" for scanning/ROC, which is indicated by the beacon being 2512 * disabled/enabled via @bss_info_changed. 2513 * @stop_ap: Stop operation on the AP interface. 2514 * 2515 * @restart_complete: Called after a call to ieee80211_restart_hw(), when the 2516 * reconfiguration has completed. This can help the driver implement the 2517 * reconfiguration step. Also called when reconfiguring because the 2518 * driver's resume function returned 1, as this is just like an "inline" 2519 * hardware restart. This callback may sleep. 2520 * 2521 * @ipv6_addr_change: IPv6 address assignment on the given interface changed. 2522 * Currently, this is only called for managed or P2P client interfaces. 2523 * This callback is optional; it must not sleep. 2524 */ 2525struct ieee80211_ops { 2526 void (*tx)(struct ieee80211_hw *hw, 2527 struct ieee80211_tx_control *control, 2528 struct sk_buff *skb); 2529 int (*start)(struct ieee80211_hw *hw); 2530 void (*stop)(struct ieee80211_hw *hw); 2531#ifdef CONFIG_PM 2532 int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan); 2533 int (*resume)(struct ieee80211_hw *hw); 2534 void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled); 2535#endif 2536 int (*add_interface)(struct ieee80211_hw *hw, 2537 struct ieee80211_vif *vif); 2538 int (*change_interface)(struct ieee80211_hw *hw, 2539 struct ieee80211_vif *vif, 2540 enum nl80211_iftype new_type, bool p2p); 2541 void (*remove_interface)(struct ieee80211_hw *hw, 2542 struct ieee80211_vif *vif); 2543 int (*config)(struct ieee80211_hw *hw, u32 changed); 2544 void (*bss_info_changed)(struct ieee80211_hw *hw, 2545 struct ieee80211_vif *vif, 2546 struct ieee80211_bss_conf *info, 2547 u32 changed); 2548 2549 int (*start_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2550 void (*stop_ap)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2551 2552 u64 (*prepare_multicast)(struct ieee80211_hw *hw, 2553 struct netdev_hw_addr_list *mc_list); 2554 void (*configure_filter)(struct ieee80211_hw *hw, 2555 unsigned int changed_flags, 2556 unsigned int *total_flags, 2557 u64 multicast); 2558 int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 2559 bool set); 2560 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, 2561 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 2562 struct ieee80211_key_conf *key); 2563 void (*update_tkip_key)(struct ieee80211_hw *hw, 2564 struct ieee80211_vif *vif, 2565 struct ieee80211_key_conf *conf, 2566 struct ieee80211_sta *sta, 2567 u32 iv32, u16 *phase1key); 2568 void (*set_rekey_data)(struct ieee80211_hw *hw, 2569 struct ieee80211_vif *vif, 2570 struct cfg80211_gtk_rekey_data *data); 2571 void (*set_default_unicast_key)(struct ieee80211_hw *hw, 2572 struct ieee80211_vif *vif, int idx); 2573 int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2574 struct cfg80211_scan_request *req); 2575 void (*cancel_hw_scan)(struct ieee80211_hw *hw, 2576 struct ieee80211_vif *vif); 2577 int (*sched_scan_start)(struct ieee80211_hw *hw, 2578 struct ieee80211_vif *vif, 2579 struct cfg80211_sched_scan_request *req, 2580 struct ieee80211_sched_scan_ies *ies); 2581 void (*sched_scan_stop)(struct ieee80211_hw *hw, 2582 struct ieee80211_vif *vif); 2583 void (*sw_scan_start)(struct ieee80211_hw *hw); 2584 void (*sw_scan_complete)(struct ieee80211_hw *hw); 2585 int (*get_stats)(struct ieee80211_hw *hw, 2586 struct ieee80211_low_level_stats *stats); 2587 void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, 2588 u32 *iv32, u16 *iv16); 2589 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); 2590 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); 2591 int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2592 struct ieee80211_sta *sta); 2593 int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2594 struct ieee80211_sta *sta); 2595#ifdef CONFIG_MAC80211_DEBUGFS 2596 void (*sta_add_debugfs)(struct ieee80211_hw *hw, 2597 struct ieee80211_vif *vif, 2598 struct ieee80211_sta *sta, 2599 struct dentry *dir); 2600 void (*sta_remove_debugfs)(struct ieee80211_hw *hw, 2601 struct ieee80211_vif *vif, 2602 struct ieee80211_sta *sta, 2603 struct dentry *dir); 2604 void (*add_interface_debugfs)(struct ieee80211_hw *hw, 2605 struct ieee80211_vif *vif, 2606 struct dentry *dir); 2607 void (*remove_interface_debugfs)(struct ieee80211_hw *hw, 2608 struct ieee80211_vif *vif, 2609 struct dentry *dir); 2610#endif 2611 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2612 enum sta_notify_cmd, struct ieee80211_sta *sta); 2613 int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2614 struct ieee80211_sta *sta, 2615 enum ieee80211_sta_state old_state, 2616 enum ieee80211_sta_state new_state); 2617 void (*sta_rc_update)(struct ieee80211_hw *hw, 2618 struct ieee80211_vif *vif, 2619 struct ieee80211_sta *sta, 2620 u32 changed); 2621 int (*conf_tx)(struct ieee80211_hw *hw, 2622 struct ieee80211_vif *vif, u16 ac, 2623 const struct ieee80211_tx_queue_params *params); 2624 u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2625 void (*set_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2626 u64 tsf); 2627 void (*reset_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2628 int (*tx_last_beacon)(struct ieee80211_hw *hw); 2629 int (*ampdu_action)(struct ieee80211_hw *hw, 2630 struct ieee80211_vif *vif, 2631 enum ieee80211_ampdu_mlme_action action, 2632 struct ieee80211_sta *sta, u16 tid, u16 *ssn, 2633 u8 buf_size); 2634 int (*get_survey)(struct ieee80211_hw *hw, int idx, 2635 struct survey_info *survey); 2636 void (*rfkill_poll)(struct ieee80211_hw *hw); 2637 void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); 2638#ifdef CONFIG_NL80211_TESTMODE 2639 int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); 2640 int (*testmode_dump)(struct ieee80211_hw *hw, struct sk_buff *skb, 2641 struct netlink_callback *cb, 2642 void *data, int len); 2643#endif 2644 void (*flush)(struct ieee80211_hw *hw, bool drop); 2645 void (*channel_switch)(struct ieee80211_hw *hw, 2646 struct ieee80211_channel_switch *ch_switch); 2647 int (*napi_poll)(struct ieee80211_hw *hw, int budget); 2648 int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); 2649 int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); 2650 2651 int (*remain_on_channel)(struct ieee80211_hw *hw, 2652 struct ieee80211_vif *vif, 2653 struct ieee80211_channel *chan, 2654 int duration); 2655 int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); 2656 int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); 2657 void (*get_ringparam)(struct ieee80211_hw *hw, 2658 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 2659 bool (*tx_frames_pending)(struct ieee80211_hw *hw); 2660 int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2661 const struct cfg80211_bitrate_mask *mask); 2662 void (*rssi_callback)(struct ieee80211_hw *hw, 2663 struct ieee80211_vif *vif, 2664 enum ieee80211_rssi_event rssi_event); 2665 2666 void (*allow_buffered_frames)(struct ieee80211_hw *hw, 2667 struct ieee80211_sta *sta, 2668 u16 tids, int num_frames, 2669 enum ieee80211_frame_release_type reason, 2670 bool more_data); 2671 void (*release_buffered_frames)(struct ieee80211_hw *hw, 2672 struct ieee80211_sta *sta, 2673 u16 tids, int num_frames, 2674 enum ieee80211_frame_release_type reason, 2675 bool more_data); 2676 2677 int (*get_et_sset_count)(struct ieee80211_hw *hw, 2678 struct ieee80211_vif *vif, int sset); 2679 void (*get_et_stats)(struct ieee80211_hw *hw, 2680 struct ieee80211_vif *vif, 2681 struct ethtool_stats *stats, u64 *data); 2682 void (*get_et_strings)(struct ieee80211_hw *hw, 2683 struct ieee80211_vif *vif, 2684 u32 sset, u8 *data); 2685 int (*get_rssi)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2686 struct ieee80211_sta *sta, s8 *rssi_dbm); 2687 2688 void (*mgd_prepare_tx)(struct ieee80211_hw *hw, 2689 struct ieee80211_vif *vif); 2690 2691 int (*add_chanctx)(struct ieee80211_hw *hw, 2692 struct ieee80211_chanctx_conf *ctx); 2693 void (*remove_chanctx)(struct ieee80211_hw *hw, 2694 struct ieee80211_chanctx_conf *ctx); 2695 void (*change_chanctx)(struct ieee80211_hw *hw, 2696 struct ieee80211_chanctx_conf *ctx, 2697 u32 changed); 2698 int (*assign_vif_chanctx)(struct ieee80211_hw *hw, 2699 struct ieee80211_vif *vif, 2700 struct ieee80211_chanctx_conf *ctx); 2701 void (*unassign_vif_chanctx)(struct ieee80211_hw *hw, 2702 struct ieee80211_vif *vif, 2703 struct ieee80211_chanctx_conf *ctx); 2704 2705 void (*restart_complete)(struct ieee80211_hw *hw); 2706 2707#if IS_ENABLED(CONFIG_IPV6) 2708 void (*ipv6_addr_change)(struct ieee80211_hw *hw, 2709 struct ieee80211_vif *vif, 2710 struct inet6_dev *idev); 2711#endif 2712}; 2713 2714/** 2715 * ieee80211_alloc_hw - Allocate a new hardware device 2716 * 2717 * This must be called once for each hardware device. The returned pointer 2718 * must be used to refer to this device when calling other functions. 2719 * mac80211 allocates a private data area for the driver pointed to by 2720 * @priv in &struct ieee80211_hw, the size of this area is given as 2721 * @priv_data_len. 2722 * 2723 * @priv_data_len: length of private data 2724 * @ops: callbacks for this device 2725 * 2726 * Return: A pointer to the new hardware device, or %NULL on error. 2727 */ 2728struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, 2729 const struct ieee80211_ops *ops); 2730 2731/** 2732 * ieee80211_register_hw - Register hardware device 2733 * 2734 * You must call this function before any other functions in 2735 * mac80211. Note that before a hardware can be registered, you 2736 * need to fill the contained wiphy's information. 2737 * 2738 * @hw: the device to register as returned by ieee80211_alloc_hw() 2739 * 2740 * Return: 0 on success. An error code otherwise. 2741 */ 2742int ieee80211_register_hw(struct ieee80211_hw *hw); 2743 2744/** 2745 * struct ieee80211_tpt_blink - throughput blink description 2746 * @throughput: throughput in Kbit/sec 2747 * @blink_time: blink time in milliseconds 2748 * (full cycle, ie. one off + one on period) 2749 */ 2750struct ieee80211_tpt_blink { 2751 int throughput; 2752 int blink_time; 2753}; 2754 2755/** 2756 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags 2757 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio 2758 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working 2759 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one 2760 * interface is connected in some way, including being an AP 2761 */ 2762enum ieee80211_tpt_led_trigger_flags { 2763 IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), 2764 IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), 2765 IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), 2766}; 2767 2768#ifdef CONFIG_MAC80211_LEDS 2769extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); 2770extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); 2771extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); 2772extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); 2773extern char *__ieee80211_create_tpt_led_trigger( 2774 struct ieee80211_hw *hw, unsigned int flags, 2775 const struct ieee80211_tpt_blink *blink_table, 2776 unsigned int blink_table_len); 2777#endif 2778/** 2779 * ieee80211_get_tx_led_name - get name of TX LED 2780 * 2781 * mac80211 creates a transmit LED trigger for each wireless hardware 2782 * that can be used to drive LEDs if your driver registers a LED device. 2783 * This function returns the name (or %NULL if not configured for LEDs) 2784 * of the trigger so you can automatically link the LED device. 2785 * 2786 * @hw: the hardware to get the LED trigger name for 2787 * 2788 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2789 */ 2790static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) 2791{ 2792#ifdef CONFIG_MAC80211_LEDS 2793 return __ieee80211_get_tx_led_name(hw); 2794#else 2795 return NULL; 2796#endif 2797} 2798 2799/** 2800 * ieee80211_get_rx_led_name - get name of RX LED 2801 * 2802 * mac80211 creates a receive LED trigger for each wireless hardware 2803 * that can be used to drive LEDs if your driver registers a LED device. 2804 * This function returns the name (or %NULL if not configured for LEDs) 2805 * of the trigger so you can automatically link the LED device. 2806 * 2807 * @hw: the hardware to get the LED trigger name for 2808 * 2809 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2810 */ 2811static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) 2812{ 2813#ifdef CONFIG_MAC80211_LEDS 2814 return __ieee80211_get_rx_led_name(hw); 2815#else 2816 return NULL; 2817#endif 2818} 2819 2820/** 2821 * ieee80211_get_assoc_led_name - get name of association LED 2822 * 2823 * mac80211 creates a association LED trigger for each wireless hardware 2824 * that can be used to drive LEDs if your driver registers a LED device. 2825 * This function returns the name (or %NULL if not configured for LEDs) 2826 * of the trigger so you can automatically link the LED device. 2827 * 2828 * @hw: the hardware to get the LED trigger name for 2829 * 2830 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2831 */ 2832static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) 2833{ 2834#ifdef CONFIG_MAC80211_LEDS 2835 return __ieee80211_get_assoc_led_name(hw); 2836#else 2837 return NULL; 2838#endif 2839} 2840 2841/** 2842 * ieee80211_get_radio_led_name - get name of radio LED 2843 * 2844 * mac80211 creates a radio change LED trigger for each wireless hardware 2845 * that can be used to drive LEDs if your driver registers a LED device. 2846 * This function returns the name (or %NULL if not configured for LEDs) 2847 * of the trigger so you can automatically link the LED device. 2848 * 2849 * @hw: the hardware to get the LED trigger name for 2850 * 2851 * Return: The name of the LED trigger. %NULL if not configured for LEDs. 2852 */ 2853static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) 2854{ 2855#ifdef CONFIG_MAC80211_LEDS 2856 return __ieee80211_get_radio_led_name(hw); 2857#else 2858 return NULL; 2859#endif 2860} 2861 2862/** 2863 * ieee80211_create_tpt_led_trigger - create throughput LED trigger 2864 * @hw: the hardware to create the trigger for 2865 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags 2866 * @blink_table: the blink table -- needs to be ordered by throughput 2867 * @blink_table_len: size of the blink table 2868 * 2869 * Return: %NULL (in case of error, or if no LED triggers are 2870 * configured) or the name of the new trigger. 2871 * 2872 * Note: This function must be called before ieee80211_register_hw(). 2873 */ 2874static inline char * 2875ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, 2876 const struct ieee80211_tpt_blink *blink_table, 2877 unsigned int blink_table_len) 2878{ 2879#ifdef CONFIG_MAC80211_LEDS 2880 return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, 2881 blink_table_len); 2882#else 2883 return NULL; 2884#endif 2885} 2886 2887/** 2888 * ieee80211_unregister_hw - Unregister a hardware device 2889 * 2890 * This function instructs mac80211 to free allocated resources 2891 * and unregister netdevices from the networking subsystem. 2892 * 2893 * @hw: the hardware to unregister 2894 */ 2895void ieee80211_unregister_hw(struct ieee80211_hw *hw); 2896 2897/** 2898 * ieee80211_free_hw - free hardware descriptor 2899 * 2900 * This function frees everything that was allocated, including the 2901 * private data for the driver. You must call ieee80211_unregister_hw() 2902 * before calling this function. 2903 * 2904 * @hw: the hardware to free 2905 */ 2906void ieee80211_free_hw(struct ieee80211_hw *hw); 2907 2908/** 2909 * ieee80211_restart_hw - restart hardware completely 2910 * 2911 * Call this function when the hardware was restarted for some reason 2912 * (hardware error, ...) and the driver is unable to restore its state 2913 * by itself. mac80211 assumes that at this point the driver/hardware 2914 * is completely uninitialised and stopped, it starts the process by 2915 * calling the ->start() operation. The driver will need to reset all 2916 * internal state that it has prior to calling this function. 2917 * 2918 * @hw: the hardware to restart 2919 */ 2920void ieee80211_restart_hw(struct ieee80211_hw *hw); 2921 2922/** ieee80211_napi_schedule - schedule NAPI poll 2923 * 2924 * Use this function to schedule NAPI polling on a device. 2925 * 2926 * @hw: the hardware to start polling 2927 */ 2928void ieee80211_napi_schedule(struct ieee80211_hw *hw); 2929 2930/** ieee80211_napi_complete - complete NAPI polling 2931 * 2932 * Use this function to finish NAPI polling on a device. 2933 * 2934 * @hw: the hardware to stop polling 2935 */ 2936void ieee80211_napi_complete(struct ieee80211_hw *hw); 2937 2938/** 2939 * ieee80211_rx - receive frame 2940 * 2941 * Use this function to hand received frames to mac80211. The receive 2942 * buffer in @skb must start with an IEEE 802.11 header. In case of a 2943 * paged @skb is used, the driver is recommended to put the ieee80211 2944 * header of the frame on the linear part of the @skb to avoid memory 2945 * allocation and/or memcpy by the stack. 2946 * 2947 * This function may not be called in IRQ context. Calls to this function 2948 * for a single hardware must be synchronized against each other. Calls to 2949 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 2950 * mixed for a single hardware. 2951 * 2952 * In process context use instead ieee80211_rx_ni(). 2953 * 2954 * @hw: the hardware this frame came in on 2955 * @skb: the buffer to receive, owned by mac80211 after this call 2956 */ 2957void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); 2958 2959/** 2960 * ieee80211_rx_irqsafe - receive frame 2961 * 2962 * Like ieee80211_rx() but can be called in IRQ context 2963 * (internally defers to a tasklet.) 2964 * 2965 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not 2966 * be mixed for a single hardware. 2967 * 2968 * @hw: the hardware this frame came in on 2969 * @skb: the buffer to receive, owned by mac80211 after this call 2970 */ 2971void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); 2972 2973/** 2974 * ieee80211_rx_ni - receive frame (in process context) 2975 * 2976 * Like ieee80211_rx() but can be called in process context 2977 * (internally disables bottom halves). 2978 * 2979 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may 2980 * not be mixed for a single hardware. 2981 * 2982 * @hw: the hardware this frame came in on 2983 * @skb: the buffer to receive, owned by mac80211 after this call 2984 */ 2985static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, 2986 struct sk_buff *skb) 2987{ 2988 local_bh_disable(); 2989 ieee80211_rx(hw, skb); 2990 local_bh_enable(); 2991} 2992 2993/** 2994 * ieee80211_sta_ps_transition - PS transition for connected sta 2995 * 2996 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS 2997 * flag set, use this function to inform mac80211 about a connected station 2998 * entering/leaving PS mode. 2999 * 3000 * This function may not be called in IRQ context or with softirqs enabled. 3001 * 3002 * Calls to this function for a single hardware must be synchronized against 3003 * each other. 3004 * 3005 * @sta: currently connected sta 3006 * @start: start or stop PS 3007 * 3008 * Return: 0 on success. -EINVAL when the requested PS mode is already set. 3009 */ 3010int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); 3011 3012/** 3013 * ieee80211_sta_ps_transition_ni - PS transition for connected sta 3014 * (in process context) 3015 * 3016 * Like ieee80211_sta_ps_transition() but can be called in process context 3017 * (internally disables bottom halves). Concurrent call restriction still 3018 * applies. 3019 * 3020 * @sta: currently connected sta 3021 * @start: start or stop PS 3022 * 3023 * Return: Like ieee80211_sta_ps_transition(). 3024 */ 3025static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, 3026 bool start) 3027{ 3028 int ret; 3029 3030 local_bh_disable(); 3031 ret = ieee80211_sta_ps_transition(sta, start); 3032 local_bh_enable(); 3033 3034 return ret; 3035} 3036 3037/* 3038 * The TX headroom reserved by mac80211 for its own tx_status functions. 3039 * This is enough for the radiotap header. 3040 */ 3041#define IEEE80211_TX_STATUS_HEADROOM 14 3042 3043/** 3044 * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames 3045 * @sta: &struct ieee80211_sta pointer for the sleeping station 3046 * @tid: the TID that has buffered frames 3047 * @buffered: indicates whether or not frames are buffered for this TID 3048 * 3049 * If a driver buffers frames for a powersave station instead of passing 3050 * them back to mac80211 for retransmission, the station may still need 3051 * to be told that there are buffered frames via the TIM bit. 3052 * 3053 * This function informs mac80211 whether or not there are frames that are 3054 * buffered in the driver for a given TID; mac80211 can then use this data 3055 * to set the TIM bit (NOTE: This may call back into the driver's set_tim 3056 * call! Beware of the locking!) 3057 * 3058 * If all frames are released to the station (due to PS-poll or uAPSD) 3059 * then the driver needs to inform mac80211 that there no longer are 3060 * frames buffered. However, when the station wakes up mac80211 assumes 3061 * that all buffered frames will be transmitted and clears this data, 3062 * drivers need to make sure they inform mac80211 about all buffered 3063 * frames on the sleep transition (sta_notify() with %STA_NOTIFY_SLEEP). 3064 * 3065 * Note that technically mac80211 only needs to know this per AC, not per 3066 * TID, but since driver buffering will inevitably happen per TID (since 3067 * it is related to aggregation) it is easier to make mac80211 map the 3068 * TID to the AC as required instead of keeping track in all drivers that 3069 * use this API. 3070 */ 3071void ieee80211_sta_set_buffered(struct ieee80211_sta *sta, 3072 u8 tid, bool buffered); 3073 3074/** 3075 * ieee80211_tx_status - transmit status callback 3076 * 3077 * Call this function for all transmitted frames after they have been 3078 * transmitted. It is permissible to not call this function for 3079 * multicast frames but this can affect statistics. 3080 * 3081 * This function may not be called in IRQ context. Calls to this function 3082 * for a single hardware must be synchronized against each other. Calls 3083 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() 3084 * may not be mixed for a single hardware. 3085 * 3086 * @hw: the hardware the frame was transmitted by 3087 * @skb: the frame that was transmitted, owned by mac80211 after this call 3088 */ 3089void ieee80211_tx_status(struct ieee80211_hw *hw, 3090 struct sk_buff *skb); 3091 3092/** 3093 * ieee80211_tx_status_ni - transmit status callback (in process context) 3094 * 3095 * Like ieee80211_tx_status() but can be called in process context. 3096 * 3097 * Calls to this function, ieee80211_tx_status() and 3098 * ieee80211_tx_status_irqsafe() may not be mixed 3099 * for a single hardware. 3100 * 3101 * @hw: the hardware the frame was transmitted by 3102 * @skb: the frame that was transmitted, owned by mac80211 after this call 3103 */ 3104static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, 3105 struct sk_buff *skb) 3106{ 3107 local_bh_disable(); 3108 ieee80211_tx_status(hw, skb); 3109 local_bh_enable(); 3110} 3111 3112/** 3113 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback 3114 * 3115 * Like ieee80211_tx_status() but can be called in IRQ context 3116 * (internally defers to a tasklet.) 3117 * 3118 * Calls to this function, ieee80211_tx_status() and 3119 * ieee80211_tx_status_ni() may not be mixed for a single hardware. 3120 * 3121 * @hw: the hardware the frame was transmitted by 3122 * @skb: the frame that was transmitted, owned by mac80211 after this call 3123 */ 3124void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, 3125 struct sk_buff *skb); 3126 3127/** 3128 * ieee80211_report_low_ack - report non-responding station 3129 * 3130 * When operating in AP-mode, call this function to report a non-responding 3131 * connected STA. 3132 * 3133 * @sta: the non-responding connected sta 3134 * @num_packets: number of packets sent to @sta without a response 3135 */ 3136void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets); 3137 3138/** 3139 * ieee80211_beacon_get_tim - beacon generation function 3140 * @hw: pointer obtained from ieee80211_alloc_hw(). 3141 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3142 * @tim_offset: pointer to variable that will receive the TIM IE offset. 3143 * Set to 0 if invalid (in non-AP modes). 3144 * @tim_length: pointer to variable that will receive the TIM IE length, 3145 * (including the ID and length bytes!). 3146 * Set to 0 if invalid (in non-AP modes). 3147 * 3148 * If the driver implements beaconing modes, it must use this function to 3149 * obtain the beacon frame/template. 3150 * 3151 * If the beacon frames are generated by the host system (i.e., not in 3152 * hardware/firmware), the driver uses this function to get each beacon 3153 * frame from mac80211 -- it is responsible for calling this function 3154 * before the beacon is needed (e.g. based on hardware interrupt). 3155 * 3156 * If the beacon frames are generated by the device, then the driver 3157 * must use the returned beacon as the template and change the TIM IE 3158 * according to the current DTIM parameters/TIM bitmap. 3159 * 3160 * The driver is responsible for freeing the returned skb. 3161 * 3162 * Return: The beacon template. %NULL on error. 3163 */ 3164struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 3165 struct ieee80211_vif *vif, 3166 u16 *tim_offset, u16 *tim_length); 3167 3168/** 3169 * ieee80211_beacon_get - beacon generation function 3170 * @hw: pointer obtained from ieee80211_alloc_hw(). 3171 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3172 * 3173 * See ieee80211_beacon_get_tim(). 3174 * 3175 * Return: See ieee80211_beacon_get_tim(). 3176 */ 3177static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, 3178 struct ieee80211_vif *vif) 3179{ 3180 return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); 3181} 3182 3183/** 3184 * ieee80211_proberesp_get - retrieve a Probe Response template 3185 * @hw: pointer obtained from ieee80211_alloc_hw(). 3186 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3187 * 3188 * Creates a Probe Response template which can, for example, be uploaded to 3189 * hardware. The destination address should be set by the caller. 3190 * 3191 * Can only be called in AP mode. 3192 * 3193 * Return: The Probe Response template. %NULL on error. 3194 */ 3195struct sk_buff *ieee80211_proberesp_get(struct ieee80211_hw *hw, 3196 struct ieee80211_vif *vif); 3197 3198/** 3199 * ieee80211_pspoll_get - retrieve a PS Poll template 3200 * @hw: pointer obtained from ieee80211_alloc_hw(). 3201 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3202 * 3203 * Creates a PS Poll a template which can, for example, uploaded to 3204 * hardware. The template must be updated after association so that correct 3205 * AID, BSSID and MAC address is used. 3206 * 3207 * Note: Caller (or hardware) is responsible for setting the 3208 * &IEEE80211_FCTL_PM bit. 3209 * 3210 * Return: The PS Poll template. %NULL on error. 3211 */ 3212struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, 3213 struct ieee80211_vif *vif); 3214 3215/** 3216 * ieee80211_nullfunc_get - retrieve a nullfunc template 3217 * @hw: pointer obtained from ieee80211_alloc_hw(). 3218 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3219 * 3220 * Creates a Nullfunc template which can, for example, uploaded to 3221 * hardware. The template must be updated after association so that correct 3222 * BSSID and address is used. 3223 * 3224 * Note: Caller (or hardware) is responsible for setting the 3225 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. 3226 * 3227 * Return: The nullfunc template. %NULL on error. 3228 */ 3229struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, 3230 struct ieee80211_vif *vif); 3231 3232/** 3233 * ieee80211_probereq_get - retrieve a Probe Request template 3234 * @hw: pointer obtained from ieee80211_alloc_hw(). 3235 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3236 * @ssid: SSID buffer 3237 * @ssid_len: length of SSID 3238 * @tailroom: tailroom to reserve at end of SKB for IEs 3239 * 3240 * Creates a Probe Request template which can, for example, be uploaded to 3241 * hardware. 3242 * 3243 * Return: The Probe Request template. %NULL on error. 3244 */ 3245struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, 3246 struct ieee80211_vif *vif, 3247 const u8 *ssid, size_t ssid_len, 3248 size_t tailroom); 3249 3250/** 3251 * ieee80211_rts_get - RTS frame generation function 3252 * @hw: pointer obtained from ieee80211_alloc_hw(). 3253 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3254 * @frame: pointer to the frame that is going to be protected by the RTS. 3255 * @frame_len: the frame length (in octets). 3256 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3257 * @rts: The buffer where to store the RTS frame. 3258 * 3259 * If the RTS frames are generated by the host system (i.e., not in 3260 * hardware/firmware), the low-level driver uses this function to receive 3261 * the next RTS frame from the 802.11 code. The low-level is responsible 3262 * for calling this function before and RTS frame is needed. 3263 */ 3264void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3265 const void *frame, size_t frame_len, 3266 const struct ieee80211_tx_info *frame_txctl, 3267 struct ieee80211_rts *rts); 3268 3269/** 3270 * ieee80211_rts_duration - Get the duration field for an RTS frame 3271 * @hw: pointer obtained from ieee80211_alloc_hw(). 3272 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3273 * @frame_len: the length of the frame that is going to be protected by the RTS. 3274 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3275 * 3276 * If the RTS is generated in firmware, but the host system must provide 3277 * the duration field, the low-level driver uses this function to receive 3278 * the duration field value in little-endian byteorder. 3279 * 3280 * Return: The duration. 3281 */ 3282__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 3283 struct ieee80211_vif *vif, size_t frame_len, 3284 const struct ieee80211_tx_info *frame_txctl); 3285 3286/** 3287 * ieee80211_ctstoself_get - CTS-to-self frame generation function 3288 * @hw: pointer obtained from ieee80211_alloc_hw(). 3289 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3290 * @frame: pointer to the frame that is going to be protected by the CTS-to-self. 3291 * @frame_len: the frame length (in octets). 3292 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3293 * @cts: The buffer where to store the CTS-to-self frame. 3294 * 3295 * If the CTS-to-self frames are generated by the host system (i.e., not in 3296 * hardware/firmware), the low-level driver uses this function to receive 3297 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible 3298 * for calling this function before and CTS-to-self frame is needed. 3299 */ 3300void ieee80211_ctstoself_get(struct ieee80211_hw *hw, 3301 struct ieee80211_vif *vif, 3302 const void *frame, size_t frame_len, 3303 const struct ieee80211_tx_info *frame_txctl, 3304 struct ieee80211_cts *cts); 3305 3306/** 3307 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame 3308 * @hw: pointer obtained from ieee80211_alloc_hw(). 3309 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3310 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. 3311 * @frame_txctl: &struct ieee80211_tx_info of the frame. 3312 * 3313 * If the CTS-to-self is generated in firmware, but the host system must provide 3314 * the duration field, the low-level driver uses this function to receive 3315 * the duration field value in little-endian byteorder. 3316 * 3317 * Return: The duration. 3318 */ 3319__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 3320 struct ieee80211_vif *vif, 3321 size_t frame_len, 3322 const struct ieee80211_tx_info *frame_txctl); 3323 3324/** 3325 * ieee80211_generic_frame_duration - Calculate the duration field for a frame 3326 * @hw: pointer obtained from ieee80211_alloc_hw(). 3327 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3328 * @band: the band to calculate the frame duration on 3329 * @frame_len: the length of the frame. 3330 * @rate: the rate at which the frame is going to be transmitted. 3331 * 3332 * Calculate the duration field of some generic frame, given its 3333 * length and transmission rate (in 100kbps). 3334 * 3335 * Return: The duration. 3336 */ 3337__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 3338 struct ieee80211_vif *vif, 3339 enum ieee80211_band band, 3340 size_t frame_len, 3341 struct ieee80211_rate *rate); 3342 3343/** 3344 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames 3345 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3346 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3347 * 3348 * Function for accessing buffered broadcast and multicast frames. If 3349 * hardware/firmware does not implement buffering of broadcast/multicast 3350 * frames when power saving is used, 802.11 code buffers them in the host 3351 * memory. The low-level driver uses this function to fetch next buffered 3352 * frame. In most cases, this is used when generating beacon frame. 3353 * 3354 * Return: A pointer to the next buffered skb or NULL if no more buffered 3355 * frames are available. 3356 * 3357 * Note: buffered frames are returned only after DTIM beacon frame was 3358 * generated with ieee80211_beacon_get() and the low-level driver must thus 3359 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns 3360 * NULL if the previous generated beacon was not DTIM, so the low-level driver 3361 * does not need to check for DTIM beacons separately and should be able to 3362 * use common code for all beacons. 3363 */ 3364struct sk_buff * 3365ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 3366 3367/** 3368 * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32 3369 * 3370 * This function returns the TKIP phase 1 key for the given IV32. 3371 * 3372 * @keyconf: the parameter passed with the set key 3373 * @iv32: IV32 to get the P1K for 3374 * @p1k: a buffer to which the key will be written, as 5 u16 values 3375 */ 3376void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, 3377 u32 iv32, u16 *p1k); 3378 3379/** 3380 * ieee80211_get_tkip_p1k - get a TKIP phase 1 key 3381 * 3382 * This function returns the TKIP phase 1 key for the IV32 taken 3383 * from the given packet. 3384 * 3385 * @keyconf: the parameter passed with the set key 3386 * @skb: the packet to take the IV32 value from that will be encrypted 3387 * with this P1K 3388 * @p1k: a buffer to which the key will be written, as 5 u16 values 3389 */ 3390static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, 3391 struct sk_buff *skb, u16 *p1k) 3392{ 3393 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 3394 const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); 3395 u32 iv32 = get_unaligned_le32(&data[4]); 3396 3397 ieee80211_get_tkip_p1k_iv(keyconf, iv32, p1k); 3398} 3399 3400/** 3401 * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX 3402 * 3403 * This function returns the TKIP phase 1 key for the given IV32 3404 * and transmitter address. 3405 * 3406 * @keyconf: the parameter passed with the set key 3407 * @ta: TA that will be used with the key 3408 * @iv32: IV32 to get the P1K for 3409 * @p1k: a buffer to which the key will be written, as 5 u16 values 3410 */ 3411void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf *keyconf, 3412 const u8 *ta, u32 iv32, u16 *p1k); 3413 3414/** 3415 * ieee80211_get_tkip_p2k - get a TKIP phase 2 key 3416 * 3417 * This function computes the TKIP RC4 key for the IV values 3418 * in the packet. 3419 * 3420 * @keyconf: the parameter passed with the set key 3421 * @skb: the packet to take the IV32/IV16 values from that will be 3422 * encrypted with this key 3423 * @p2k: a buffer to which the key will be written, 16 bytes 3424 */ 3425void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, 3426 struct sk_buff *skb, u8 *p2k); 3427 3428/** 3429 * ieee80211_aes_cmac_calculate_k1_k2 - calculate the AES-CMAC sub keys 3430 * 3431 * This function computes the two AES-CMAC sub-keys, based on the 3432 * previously installed master key. 3433 * 3434 * @keyconf: the parameter passed with the set key 3435 * @k1: a buffer to be filled with the 1st sub-key 3436 * @k2: a buffer to be filled with the 2nd sub-key 3437 */ 3438void ieee80211_aes_cmac_calculate_k1_k2(struct ieee80211_key_conf *keyconf, 3439 u8 *k1, u8 *k2); 3440 3441/** 3442 * struct ieee80211_key_seq - key sequence counter 3443 * 3444 * @tkip: TKIP data, containing IV32 and IV16 in host byte order 3445 * @ccmp: PN data, most significant byte first (big endian, 3446 * reverse order than in packet) 3447 * @aes_cmac: PN data, most significant byte first (big endian, 3448 * reverse order than in packet) 3449 */ 3450struct ieee80211_key_seq { 3451 union { 3452 struct { 3453 u32 iv32; 3454 u16 iv16; 3455 } tkip; 3456 struct { 3457 u8 pn[6]; 3458 } ccmp; 3459 struct { 3460 u8 pn[6]; 3461 } aes_cmac; 3462 }; 3463}; 3464 3465/** 3466 * ieee80211_get_key_tx_seq - get key TX sequence counter 3467 * 3468 * @keyconf: the parameter passed with the set key 3469 * @seq: buffer to receive the sequence data 3470 * 3471 * This function allows a driver to retrieve the current TX IV/PN 3472 * for the given key. It must not be called if IV generation is 3473 * offloaded to the device. 3474 * 3475 * Note that this function may only be called when no TX processing 3476 * can be done concurrently, for example when queues are stopped 3477 * and the stop has been synchronized. 3478 */ 3479void ieee80211_get_key_tx_seq(struct ieee80211_key_conf *keyconf, 3480 struct ieee80211_key_seq *seq); 3481 3482/** 3483 * ieee80211_get_key_rx_seq - get key RX sequence counter 3484 * 3485 * @keyconf: the parameter passed with the set key 3486 * @tid: The TID, or -1 for the management frame value (CCMP only); 3487 * the value on TID 0 is also used for non-QoS frames. For 3488 * CMAC, only TID 0 is valid. 3489 * @seq: buffer to receive the sequence data 3490 * 3491 * This function allows a driver to retrieve the current RX IV/PNs 3492 * for the given key. It must not be called if IV checking is done 3493 * by the device and not by mac80211. 3494 * 3495 * Note that this function may only be called when no RX processing 3496 * can be done concurrently. 3497 */ 3498void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf, 3499 int tid, struct ieee80211_key_seq *seq); 3500 3501/** 3502 * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying 3503 * @vif: virtual interface the rekeying was done on 3504 * @bssid: The BSSID of the AP, for checking association 3505 * @replay_ctr: the new replay counter after GTK rekeying 3506 * @gfp: allocation flags 3507 */ 3508void ieee80211_gtk_rekey_notify(struct ieee80211_vif *vif, const u8 *bssid, 3509 const u8 *replay_ctr, gfp_t gfp); 3510 3511/** 3512 * ieee80211_wake_queue - wake specific queue 3513 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3514 * @queue: queue number (counted from zero). 3515 * 3516 * Drivers should use this function instead of netif_wake_queue. 3517 */ 3518void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); 3519 3520/** 3521 * ieee80211_stop_queue - stop specific queue 3522 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3523 * @queue: queue number (counted from zero). 3524 * 3525 * Drivers should use this function instead of netif_stop_queue. 3526 */ 3527void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); 3528 3529/** 3530 * ieee80211_queue_stopped - test status of the queue 3531 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3532 * @queue: queue number (counted from zero). 3533 * 3534 * Drivers should use this function instead of netif_stop_queue. 3535 * 3536 * Return: %true if the queue is stopped. %false otherwise. 3537 */ 3538 3539int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); 3540 3541/** 3542 * ieee80211_stop_queues - stop all queues 3543 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3544 * 3545 * Drivers should use this function instead of netif_stop_queue. 3546 */ 3547void ieee80211_stop_queues(struct ieee80211_hw *hw); 3548 3549/** 3550 * ieee80211_wake_queues - wake all queues 3551 * @hw: pointer as obtained from ieee80211_alloc_hw(). 3552 * 3553 * Drivers should use this function instead of netif_wake_queue. 3554 */ 3555void ieee80211_wake_queues(struct ieee80211_hw *hw); 3556 3557/** 3558 * ieee80211_scan_completed - completed hardware scan 3559 * 3560 * When hardware scan offload is used (i.e. the hw_scan() callback is 3561 * assigned) this function needs to be called by the driver to notify 3562 * mac80211 that the scan finished. This function can be called from 3563 * any context, including hardirq context. 3564 * 3565 * @hw: the hardware that finished the scan 3566 * @aborted: set to true if scan was aborted 3567 */ 3568void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); 3569 3570/** 3571 * ieee80211_sched_scan_results - got results from scheduled scan 3572 * 3573 * When a scheduled scan is running, this function needs to be called by the 3574 * driver whenever there are new scan results available. 3575 * 3576 * @hw: the hardware that is performing scheduled scans 3577 */ 3578void ieee80211_sched_scan_results(struct ieee80211_hw *hw); 3579 3580/** 3581 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped 3582 * 3583 * When a scheduled scan is running, this function can be called by 3584 * the driver if it needs to stop the scan to perform another task. 3585 * Usual scenarios are drivers that cannot continue the scheduled scan 3586 * while associating, for instance. 3587 * 3588 * @hw: the hardware that is performing scheduled scans 3589 */ 3590void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw); 3591 3592/** 3593 * enum ieee80211_interface_iteration_flags - interface iteration flags 3594 * @IEEE80211_IFACE_ITER_NORMAL: Iterate over all interfaces that have 3595 * been added to the driver; However, note that during hardware 3596 * reconfiguration (after restart_hw) it will iterate over a new 3597 * interface and over all the existing interfaces even if they 3598 * haven't been re-added to the driver yet. 3599 * @IEEE80211_IFACE_ITER_RESUME_ALL: During resume, iterate over all 3600 * interfaces, even if they haven't been re-added to the driver yet. 3601 */ 3602enum ieee80211_interface_iteration_flags { 3603 IEEE80211_IFACE_ITER_NORMAL = 0, 3604 IEEE80211_IFACE_ITER_RESUME_ALL = BIT(0), 3605}; 3606 3607/** 3608 * ieee80211_iterate_active_interfaces - iterate active interfaces 3609 * 3610 * This function iterates over the interfaces associated with a given 3611 * hardware that are currently active and calls the callback for them. 3612 * This function allows the iterator function to sleep, when the iterator 3613 * function is atomic @ieee80211_iterate_active_interfaces_atomic can 3614 * be used. 3615 * Does not iterate over a new interface during add_interface(). 3616 * 3617 * @hw: the hardware struct of which the interfaces should be iterated over 3618 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3619 * @iterator: the iterator function to call 3620 * @data: first argument of the iterator function 3621 */ 3622void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, 3623 u32 iter_flags, 3624 void (*iterator)(void *data, u8 *mac, 3625 struct ieee80211_vif *vif), 3626 void *data); 3627 3628/** 3629 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces 3630 * 3631 * This function iterates over the interfaces associated with a given 3632 * hardware that are currently active and calls the callback for them. 3633 * This function requires the iterator callback function to be atomic, 3634 * if that is not desired, use @ieee80211_iterate_active_interfaces instead. 3635 * Does not iterate over a new interface during add_interface(). 3636 * 3637 * @hw: the hardware struct of which the interfaces should be iterated over 3638 * @iter_flags: iteration flags, see &enum ieee80211_interface_iteration_flags 3639 * @iterator: the iterator function to call, cannot sleep 3640 * @data: first argument of the iterator function 3641 */ 3642void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, 3643 u32 iter_flags, 3644 void (*iterator)(void *data, 3645 u8 *mac, 3646 struct ieee80211_vif *vif), 3647 void *data); 3648 3649/** 3650 * ieee80211_queue_work - add work onto the mac80211 workqueue 3651 * 3652 * Drivers and mac80211 use this to add work onto the mac80211 workqueue. 3653 * This helper ensures drivers are not queueing work when they should not be. 3654 * 3655 * @hw: the hardware struct for the interface we are adding work for 3656 * @work: the work we want to add onto the mac80211 workqueue 3657 */ 3658void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); 3659 3660/** 3661 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue 3662 * 3663 * Drivers and mac80211 use this to queue delayed work onto the mac80211 3664 * workqueue. 3665 * 3666 * @hw: the hardware struct for the interface we are adding work for 3667 * @dwork: delayable work to queue onto the mac80211 workqueue 3668 * @delay: number of jiffies to wait before queueing 3669 */ 3670void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 3671 struct delayed_work *dwork, 3672 unsigned long delay); 3673 3674/** 3675 * ieee80211_start_tx_ba_session - Start a tx Block Ack session. 3676 * @sta: the station for which to start a BA session 3677 * @tid: the TID to BA on. 3678 * @timeout: session timeout value (in TUs) 3679 * 3680 * Return: success if addBA request was sent, failure otherwise 3681 * 3682 * Although mac80211/low level driver/user space application can estimate 3683 * the need to start aggregation on a certain RA/TID, the session level 3684 * will be managed by the mac80211. 3685 */ 3686int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, 3687 u16 timeout); 3688 3689/** 3690 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. 3691 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3692 * @ra: receiver address of the BA session recipient. 3693 * @tid: the TID to BA on. 3694 * 3695 * This function must be called by low level driver once it has 3696 * finished with preparations for the BA session. It can be called 3697 * from any context. 3698 */ 3699void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3700 u16 tid); 3701 3702/** 3703 * ieee80211_stop_tx_ba_session - Stop a Block Ack session. 3704 * @sta: the station whose BA session to stop 3705 * @tid: the TID to stop BA. 3706 * 3707 * Return: negative error if the TID is invalid, or no aggregation active 3708 * 3709 * Although mac80211/low level driver/user space application can estimate 3710 * the need to stop aggregation on a certain RA/TID, the session level 3711 * will be managed by the mac80211. 3712 */ 3713int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); 3714 3715/** 3716 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. 3717 * @vif: &struct ieee80211_vif pointer from the add_interface callback 3718 * @ra: receiver address of the BA session recipient. 3719 * @tid: the desired TID to BA on. 3720 * 3721 * This function must be called by low level driver once it has 3722 * finished with preparations for the BA session tear down. It 3723 * can be called from any context. 3724 */ 3725void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 3726 u16 tid); 3727 3728/** 3729 * ieee80211_find_sta - find a station 3730 * 3731 * @vif: virtual interface to look for station on 3732 * @addr: station's address 3733 * 3734 * Return: The station, if found. %NULL otherwise. 3735 * 3736 * Note: This function must be called under RCU lock and the 3737 * resulting pointer is only valid under RCU lock as well. 3738 */ 3739struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, 3740 const u8 *addr); 3741 3742/** 3743 * ieee80211_find_sta_by_ifaddr - find a station on hardware 3744 * 3745 * @hw: pointer as obtained from ieee80211_alloc_hw() 3746 * @addr: remote station's address 3747 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. 3748 * 3749 * Return: The station, if found. %NULL otherwise. 3750 * 3751 * Note: This function must be called under RCU lock and the 3752 * resulting pointer is only valid under RCU lock as well. 3753 * 3754 * NOTE: You may pass NULL for localaddr, but then you will just get 3755 * the first STA that matches the remote address 'addr'. 3756 * We can have multiple STA associated with multiple 3757 * logical stations (e.g. consider a station connecting to another 3758 * BSSID on the same AP hardware without disconnecting first). 3759 * In this case, the result of this method with localaddr NULL 3760 * is not reliable. 3761 * 3762 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. 3763 */ 3764struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, 3765 const u8 *addr, 3766 const u8 *localaddr); 3767 3768/** 3769 * ieee80211_sta_block_awake - block station from waking up 3770 * @hw: the hardware 3771 * @pubsta: the station 3772 * @block: whether to block or unblock 3773 * 3774 * Some devices require that all frames that are on the queues 3775 * for a specific station that went to sleep are flushed before 3776 * a poll response or frames after the station woke up can be 3777 * delivered to that it. Note that such frames must be rejected 3778 * by the driver as filtered, with the appropriate status flag. 3779 * 3780 * This function allows implementing this mode in a race-free 3781 * manner. 3782 * 3783 * To do this, a driver must keep track of the number of frames 3784 * still enqueued for a specific station. If this number is not 3785 * zero when the station goes to sleep, the driver must call 3786 * this function to force mac80211 to consider the station to 3787 * be asleep regardless of the station's actual state. Once the 3788 * number of outstanding frames reaches zero, the driver must 3789 * call this function again to unblock the station. That will 3790 * cause mac80211 to be able to send ps-poll responses, and if 3791 * the station queried in the meantime then frames will also 3792 * be sent out as a result of this. Additionally, the driver 3793 * will be notified that the station woke up some time after 3794 * it is unblocked, regardless of whether the station actually 3795 * woke up while blocked or not. 3796 */ 3797void ieee80211_sta_block_awake(struct ieee80211_hw *hw, 3798 struct ieee80211_sta *pubsta, bool block); 3799 3800/** 3801 * ieee80211_sta_eosp - notify mac80211 about end of SP 3802 * @pubsta: the station 3803 * 3804 * When a device transmits frames in a way that it can't tell 3805 * mac80211 in the TX status about the EOSP, it must clear the 3806 * %IEEE80211_TX_STATUS_EOSP bit and call this function instead. 3807 * This applies for PS-Poll as well as uAPSD. 3808 * 3809 * Note that there is no non-_irqsafe version right now as 3810 * it wasn't needed, but just like _tx_status() and _rx() 3811 * must not be mixed in irqsafe/non-irqsafe versions, this 3812 * function must not be mixed with those either. Use the 3813 * all irqsafe, or all non-irqsafe, don't mix! If you need 3814 * the non-irqsafe version of this, you need to add it. 3815 */ 3816void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta); 3817 3818/** 3819 * ieee80211_iter_keys - iterate keys programmed into the device 3820 * @hw: pointer obtained from ieee80211_alloc_hw() 3821 * @vif: virtual interface to iterate, may be %NULL for all 3822 * @iter: iterator function that will be called for each key 3823 * @iter_data: custom data to pass to the iterator function 3824 * 3825 * This function can be used to iterate all the keys known to 3826 * mac80211, even those that weren't previously programmed into 3827 * the device. This is intended for use in WoWLAN if the device 3828 * needs reprogramming of the keys during suspend. Note that due 3829 * to locking reasons, it is also only safe to call this at few 3830 * spots since it must hold the RTNL and be able to sleep. 3831 * 3832 * The order in which the keys are iterated matches the order 3833 * in which they were originally installed and handed to the 3834 * set_key callback. 3835 */ 3836void ieee80211_iter_keys(struct ieee80211_hw *hw, 3837 struct ieee80211_vif *vif, 3838 void (*iter)(struct ieee80211_hw *hw, 3839 struct ieee80211_vif *vif, 3840 struct ieee80211_sta *sta, 3841 struct ieee80211_key_conf *key, 3842 void *data), 3843 void *iter_data); 3844 3845/** 3846 * ieee80211_iter_chan_contexts_atomic - iterate channel contexts 3847 * @hw: pointre obtained from ieee80211_alloc_hw(). 3848 * @iter: iterator function 3849 * @iter_data: data passed to iterator function 3850 * 3851 * Iterate all active channel contexts. This function is atomic and 3852 * doesn't acquire any locks internally that might be held in other 3853 * places while calling into the driver. 3854 * 3855 * The iterator will not find a context that's being added (during 3856 * the driver callback to add it) but will find it while it's being 3857 * removed. 3858 * 3859 * Note that during hardware restart, all contexts that existed 3860 * before the restart are considered already present so will be 3861 * found while iterating, whether they've been re-added already 3862 * or not. 3863 */ 3864void ieee80211_iter_chan_contexts_atomic( 3865 struct ieee80211_hw *hw, 3866 void (*iter)(struct ieee80211_hw *hw, 3867 struct ieee80211_chanctx_conf *chanctx_conf, 3868 void *data), 3869 void *iter_data); 3870 3871/** 3872 * ieee80211_ap_probereq_get - retrieve a Probe Request template 3873 * @hw: pointer obtained from ieee80211_alloc_hw(). 3874 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3875 * 3876 * Creates a Probe Request template which can, for example, be uploaded to 3877 * hardware. The template is filled with bssid, ssid and supported rate 3878 * information. This function must only be called from within the 3879 * .bss_info_changed callback function and only in managed mode. The function 3880 * is only useful when the interface is associated, otherwise it will return 3881 * %NULL. 3882 * 3883 * Return: The Probe Request template. %NULL on error. 3884 */ 3885struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 3886 struct ieee80211_vif *vif); 3887 3888/** 3889 * ieee80211_beacon_loss - inform hardware does not receive beacons 3890 * 3891 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3892 * 3893 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER and 3894 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the 3895 * hardware is not receiving beacons with this function. 3896 */ 3897void ieee80211_beacon_loss(struct ieee80211_vif *vif); 3898 3899/** 3900 * ieee80211_connection_loss - inform hardware has lost connection to the AP 3901 * 3902 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3903 * 3904 * When beacon filtering is enabled with %IEEE80211_VIF_BEACON_FILTER, and 3905 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver 3906 * needs to inform if the connection to the AP has been lost. 3907 * The function may also be called if the connection needs to be terminated 3908 * for some other reason, even if %IEEE80211_HW_CONNECTION_MONITOR isn't set. 3909 * 3910 * This function will cause immediate change to disassociated state, 3911 * without connection recovery attempts. 3912 */ 3913void ieee80211_connection_loss(struct ieee80211_vif *vif); 3914 3915/** 3916 * ieee80211_resume_disconnect - disconnect from AP after resume 3917 * 3918 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3919 * 3920 * Instructs mac80211 to disconnect from the AP after resume. 3921 * Drivers can use this after WoWLAN if they know that the 3922 * connection cannot be kept up, for example because keys were 3923 * used while the device was asleep but the replay counters or 3924 * similar cannot be retrieved from the device during resume. 3925 * 3926 * Note that due to implementation issues, if the driver uses 3927 * the reconfiguration functionality during resume the interface 3928 * will still be added as associated first during resume and then 3929 * disconnect normally later. 3930 * 3931 * This function can only be called from the resume callback and 3932 * the driver must not be holding any of its own locks while it 3933 * calls this function, or at least not any locks it needs in the 3934 * key configuration paths (if it supports HW crypto). 3935 */ 3936void ieee80211_resume_disconnect(struct ieee80211_vif *vif); 3937 3938/** 3939 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring 3940 * rssi threshold triggered 3941 * 3942 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3943 * @rssi_event: the RSSI trigger event type 3944 * @gfp: context flags 3945 * 3946 * When the %IEEE80211_VIF_SUPPORTS_CQM_RSSI is set, and a connection quality 3947 * monitoring is configured with an rssi threshold, the driver will inform 3948 * whenever the rssi level reaches the threshold. 3949 */ 3950void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 3951 enum nl80211_cqm_rssi_threshold_event rssi_event, 3952 gfp_t gfp); 3953 3954/** 3955 * ieee80211_radar_detected - inform that a radar was detected 3956 * 3957 * @hw: pointer as obtained from ieee80211_alloc_hw() 3958 */ 3959void ieee80211_radar_detected(struct ieee80211_hw *hw); 3960 3961/** 3962 * ieee80211_chswitch_done - Complete channel switch process 3963 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3964 * @success: make the channel switch successful or not 3965 * 3966 * Complete the channel switch post-process: set the new operational channel 3967 * and wake up the suspended queues. 3968 */ 3969void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); 3970 3971/** 3972 * ieee80211_request_smps - request SM PS transition 3973 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3974 * @smps_mode: new SM PS mode 3975 * 3976 * This allows the driver to request an SM PS transition in managed 3977 * mode. This is useful when the driver has more information than 3978 * the stack about possible interference, for example by bluetooth. 3979 */ 3980void ieee80211_request_smps(struct ieee80211_vif *vif, 3981 enum ieee80211_smps_mode smps_mode); 3982 3983/** 3984 * ieee80211_ready_on_channel - notification of remain-on-channel start 3985 * @hw: pointer as obtained from ieee80211_alloc_hw() 3986 */ 3987void ieee80211_ready_on_channel(struct ieee80211_hw *hw); 3988 3989/** 3990 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired 3991 * @hw: pointer as obtained from ieee80211_alloc_hw() 3992 */ 3993void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); 3994 3995/** 3996 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions 3997 * 3998 * in order not to harm the system performance and user experience, the device 3999 * may request not to allow any rx ba session and tear down existing rx ba 4000 * sessions based on system constraints such as periodic BT activity that needs 4001 * to limit wlan activity (eg.sco or a2dp)." 4002 * in such cases, the intention is to limit the duration of the rx ppdu and 4003 * therefore prevent the peer device to use a-mpdu aggregation. 4004 * 4005 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4006 * @ba_rx_bitmap: Bit map of open rx ba per tid 4007 * @addr: & to bssid mac address 4008 */ 4009void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, 4010 const u8 *addr); 4011 4012/** 4013 * ieee80211_send_bar - send a BlockAckReq frame 4014 * 4015 * can be used to flush pending frames from the peer's aggregation reorder 4016 * buffer. 4017 * 4018 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 4019 * @ra: the peer's destination address 4020 * @tid: the TID of the aggregation session 4021 * @ssn: the new starting sequence number for the receiver 4022 */ 4023void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn); 4024 4025/* Rate control API */ 4026 4027/** 4028 * struct ieee80211_tx_rate_control - rate control information for/from RC algo 4029 * 4030 * @hw: The hardware the algorithm is invoked for. 4031 * @sband: The band this frame is being transmitted on. 4032 * @bss_conf: the current BSS configuration 4033 * @skb: the skb that will be transmitted, the control information in it needs 4034 * to be filled in 4035 * @reported_rate: The rate control algorithm can fill this in to indicate 4036 * which rate should be reported to userspace as the current rate and 4037 * used for rate calculations in the mesh network. 4038 * @rts: whether RTS will be used for this frame because it is longer than the 4039 * RTS threshold 4040 * @short_preamble: whether mac80211 will request short-preamble transmission 4041 * if the selected rate supports it 4042 * @max_rate_idx: user-requested maximum (legacy) rate 4043 * (deprecated; this will be removed once drivers get updated to use 4044 * rate_idx_mask) 4045 * @rate_idx_mask: user-requested (legacy) rate mask 4046 * @rate_idx_mcs_mask: user-requested MCS rate mask 4047 * @bss: whether this frame is sent out in AP or IBSS mode 4048 */ 4049struct ieee80211_tx_rate_control { 4050 struct ieee80211_hw *hw; 4051 struct ieee80211_supported_band *sband; 4052 struct ieee80211_bss_conf *bss_conf; 4053 struct sk_buff *skb; 4054 struct ieee80211_tx_rate reported_rate; 4055 bool rts, short_preamble; 4056 u8 max_rate_idx; 4057 u32 rate_idx_mask; 4058 u8 rate_idx_mcs_mask[IEEE80211_HT_MCS_MASK_LEN]; 4059 bool bss; 4060}; 4061 4062struct rate_control_ops { 4063 struct module *module; 4064 const char *name; 4065 void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); 4066 void (*free)(void *priv); 4067 4068 void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); 4069 void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, 4070 struct ieee80211_sta *sta, void *priv_sta); 4071 void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, 4072 struct ieee80211_sta *sta, void *priv_sta, 4073 u32 changed); 4074 void (*free_sta)(void *priv, struct ieee80211_sta *sta, 4075 void *priv_sta); 4076 4077 void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, 4078 struct ieee80211_sta *sta, void *priv_sta, 4079 struct sk_buff *skb); 4080 void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, 4081 struct ieee80211_tx_rate_control *txrc); 4082 4083 void (*add_sta_debugfs)(void *priv, void *priv_sta, 4084 struct dentry *dir); 4085 void (*remove_sta_debugfs)(void *priv, void *priv_sta); 4086}; 4087 4088static inline int rate_supported(struct ieee80211_sta *sta, 4089 enum ieee80211_band band, 4090 int index) 4091{ 4092 return (sta == NULL || sta->supp_rates[band] & BIT(index)); 4093} 4094 4095/** 4096 * rate_control_send_low - helper for drivers for management/no-ack frames 4097 * 4098 * Rate control algorithms that agree to use the lowest rate to 4099 * send management frames and NO_ACK data with the respective hw 4100 * retries should use this in the beginning of their mac80211 get_rate 4101 * callback. If true is returned the rate control can simply return. 4102 * If false is returned we guarantee that sta and sta and priv_sta is 4103 * not null. 4104 * 4105 * Rate control algorithms wishing to do more intelligent selection of 4106 * rate for multicast/broadcast frames may choose to not use this. 4107 * 4108 * @sta: &struct ieee80211_sta pointer to the target destination. Note 4109 * that this may be null. 4110 * @priv_sta: private rate control structure. This may be null. 4111 * @txrc: rate control information we sholud populate for mac80211. 4112 */ 4113bool rate_control_send_low(struct ieee80211_sta *sta, 4114 void *priv_sta, 4115 struct ieee80211_tx_rate_control *txrc); 4116 4117 4118static inline s8 4119rate_lowest_index(struct ieee80211_supported_band *sband, 4120 struct ieee80211_sta *sta) 4121{ 4122 int i; 4123 4124 for (i = 0; i < sband->n_bitrates; i++) 4125 if (rate_supported(sta, sband->band, i)) 4126 return i; 4127 4128 /* warn when we cannot find a rate. */ 4129 WARN_ON_ONCE(1); 4130 4131 /* and return 0 (the lowest index) */ 4132 return 0; 4133} 4134 4135static inline 4136bool rate_usable_index_exists(struct ieee80211_supported_band *sband, 4137 struct ieee80211_sta *sta) 4138{ 4139 unsigned int i; 4140 4141 for (i = 0; i < sband->n_bitrates; i++) 4142 if (rate_supported(sta, sband->band, i)) 4143 return true; 4144 return false; 4145} 4146 4147int ieee80211_rate_control_register(struct rate_control_ops *ops); 4148void ieee80211_rate_control_unregister(struct rate_control_ops *ops); 4149 4150static inline bool 4151conf_is_ht20(struct ieee80211_conf *conf) 4152{ 4153 return conf->channel_type == NL80211_CHAN_HT20; 4154} 4155 4156static inline bool 4157conf_is_ht40_minus(struct ieee80211_conf *conf) 4158{ 4159 return conf->channel_type == NL80211_CHAN_HT40MINUS; 4160} 4161 4162static inline bool 4163conf_is_ht40_plus(struct ieee80211_conf *conf) 4164{ 4165 return conf->channel_type == NL80211_CHAN_HT40PLUS; 4166} 4167 4168static inline bool 4169conf_is_ht40(struct ieee80211_conf *conf) 4170{ 4171 return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); 4172} 4173 4174static inline bool 4175conf_is_ht(struct ieee80211_conf *conf) 4176{ 4177 return conf->channel_type != NL80211_CHAN_NO_HT; 4178} 4179 4180static inline enum nl80211_iftype 4181ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) 4182{ 4183 if (p2p) { 4184 switch (type) { 4185 case NL80211_IFTYPE_STATION: 4186 return NL80211_IFTYPE_P2P_CLIENT; 4187 case NL80211_IFTYPE_AP: 4188 return NL80211_IFTYPE_P2P_GO; 4189 default: 4190 break; 4191 } 4192 } 4193 return type; 4194} 4195 4196static inline enum nl80211_iftype 4197ieee80211_vif_type_p2p(struct ieee80211_vif *vif) 4198{ 4199 return ieee80211_iftype_p2p(vif->type, vif->p2p); 4200} 4201 4202void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, 4203 int rssi_min_thold, 4204 int rssi_max_thold); 4205 4206void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif); 4207 4208/** 4209 * ieee80211_ave_rssi - report the average RSSI for the specified interface 4210 * 4211 * @vif: the specified virtual interface 4212 * 4213 * Note: This function assumes that the given vif is valid. 4214 * 4215 * Return: The average RSSI value for the requested interface, or 0 if not 4216 * applicable. 4217 */ 4218int ieee80211_ave_rssi(struct ieee80211_vif *vif); 4219 4220/** 4221 * ieee80211_report_wowlan_wakeup - report WoWLAN wakeup 4222 * @vif: virtual interface 4223 * @wakeup: wakeup reason(s) 4224 * @gfp: allocation flags 4225 * 4226 * See cfg80211_report_wowlan_wakeup(). 4227 */ 4228void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif, 4229 struct cfg80211_wowlan_wakeup *wakeup, 4230 gfp_t gfp); 4231 4232#endif /* MAC80211_H */ 4233