mac80211.h revision 830af02f24fbc087999b757b8eca51829c67fa6f
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/kernel.h> 17#include <linux/if_ether.h> 18#include <linux/skbuff.h> 19#include <linux/wireless.h> 20#include <linux/device.h> 21#include <linux/ieee80211.h> 22#include <net/cfg80211.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 90/** 91 * enum ieee80211_max_queues - maximum number of queues 92 * 93 * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. 94 */ 95enum ieee80211_max_queues { 96 IEEE80211_MAX_QUEUES = 4, 97}; 98 99/** 100 * enum ieee80211_ac_numbers - AC numbers as used in mac80211 101 * @IEEE80211_AC_VO: voice 102 * @IEEE80211_AC_VI: video 103 * @IEEE80211_AC_BE: best effort 104 * @IEEE80211_AC_BK: background 105 */ 106enum ieee80211_ac_numbers { 107 IEEE80211_AC_VO = 0, 108 IEEE80211_AC_VI = 1, 109 IEEE80211_AC_BE = 2, 110 IEEE80211_AC_BK = 3, 111}; 112 113/** 114 * struct ieee80211_tx_queue_params - transmit queue configuration 115 * 116 * The information provided in this structure is required for QoS 117 * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. 118 * 119 * @aifs: arbitration interframe space [0..255] 120 * @cw_min: minimum contention window [a value of the form 121 * 2^n-1 in the range 1..32767] 122 * @cw_max: maximum contention window [like @cw_min] 123 * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled 124 * @uapsd: is U-APSD mode enabled for the queue 125 */ 126struct ieee80211_tx_queue_params { 127 u16 txop; 128 u16 cw_min; 129 u16 cw_max; 130 u8 aifs; 131 bool uapsd; 132}; 133 134struct ieee80211_low_level_stats { 135 unsigned int dot11ACKFailureCount; 136 unsigned int dot11RTSFailureCount; 137 unsigned int dot11FCSErrorCount; 138 unsigned int dot11RTSSuccessCount; 139}; 140 141/** 142 * enum ieee80211_bss_change - BSS change notification flags 143 * 144 * These flags are used with the bss_info_changed() callback 145 * to indicate which BSS parameter changed. 146 * 147 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), 148 * also implies a change in the AID. 149 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed 150 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed 151 * @BSS_CHANGED_ERP_SLOT: slot timing changed 152 * @BSS_CHANGED_HT: 802.11n parameters changed 153 * @BSS_CHANGED_BASIC_RATES: Basic rateset changed 154 * @BSS_CHANGED_BEACON_INT: Beacon interval changed 155 * @BSS_CHANGED_BSSID: BSSID changed, for whatever 156 * reason (IBSS and managed mode) 157 * @BSS_CHANGED_BEACON: Beacon data changed, retrieve 158 * new beacon (beaconing modes) 159 * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be 160 * enabled/disabled (beaconing modes) 161 * @BSS_CHANGED_CQM: Connection quality monitor config changed 162 * @BSS_CHANGED_IBSS: IBSS join status changed 163 * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. 164 * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note 165 * that it is only ever disabled for station mode. 166 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface. 167 */ 168enum ieee80211_bss_change { 169 BSS_CHANGED_ASSOC = 1<<0, 170 BSS_CHANGED_ERP_CTS_PROT = 1<<1, 171 BSS_CHANGED_ERP_PREAMBLE = 1<<2, 172 BSS_CHANGED_ERP_SLOT = 1<<3, 173 BSS_CHANGED_HT = 1<<4, 174 BSS_CHANGED_BASIC_RATES = 1<<5, 175 BSS_CHANGED_BEACON_INT = 1<<6, 176 BSS_CHANGED_BSSID = 1<<7, 177 BSS_CHANGED_BEACON = 1<<8, 178 BSS_CHANGED_BEACON_ENABLED = 1<<9, 179 BSS_CHANGED_CQM = 1<<10, 180 BSS_CHANGED_IBSS = 1<<11, 181 BSS_CHANGED_ARP_FILTER = 1<<12, 182 BSS_CHANGED_QOS = 1<<13, 183 BSS_CHANGED_IDLE = 1<<14, 184 185 /* when adding here, make sure to change ieee80211_reconfig */ 186}; 187 188/* 189 * The maximum number of IPv4 addresses listed for ARP filtering. If the number 190 * of addresses for an interface increase beyond this value, hardware ARP 191 * filtering will be disabled. 192 */ 193#define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 194 195/** 196 * struct ieee80211_bss_conf - holds the BSS's changing parameters 197 * 198 * This structure keeps information about a BSS (and an association 199 * to that BSS) that can change during the lifetime of the BSS. 200 * 201 * @assoc: association status 202 * @ibss_joined: indicates whether this station is part of an IBSS 203 * or not 204 * @aid: association ID number, valid only when @assoc is true 205 * @use_cts_prot: use CTS protection 206 * @use_short_preamble: use 802.11b short preamble; 207 * if the hardware cannot handle this it must set the 208 * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag 209 * @use_short_slot: use short slot time (only relevant for ERP); 210 * if the hardware cannot handle this it must set the 211 * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag 212 * @dtim_period: num of beacons before the next DTIM, for beaconing, 213 * valid in station mode only while @assoc is true and if also 214 * requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf 215 * @ps_dtim_period) 216 * @timestamp: beacon timestamp 217 * @beacon_int: beacon interval 218 * @assoc_capability: capabilities taken from assoc resp 219 * @basic_rates: bitmap of basic rates, each bit stands for an 220 * index into the rate table configured by the driver in 221 * the current band. 222 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 223 * @bssid: The BSSID for this BSS 224 * @enable_beacon: whether beaconing should be enabled or not 225 * @channel_type: Channel type for this BSS -- the hardware might be 226 * configured for HT40+ while this BSS only uses no-HT, for 227 * example. 228 * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info). 229 * This field is only valid when the channel type is one of the HT types. 230 * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value 231 * implies disabled 232 * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis 233 * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The 234 * may filter ARP queries targeted for other addresses than listed here. 235 * The driver must allow ARP queries targeted for all address listed here 236 * to pass through. An empty list implies no ARP queries need to pass. 237 * @arp_addr_cnt: Number of addresses currently on the list. 238 * @arp_filter_enabled: Enable ARP filtering - if enabled, the hardware may 239 * filter ARP queries based on the @arp_addr_list, if disabled, the 240 * hardware must not perform any ARP filtering. Note, that the filter will 241 * be enabled also in promiscuous mode. 242 * @qos: This is a QoS-enabled BSS. 243 * @idle: This interface is idle. There's also a global idle flag in the 244 * hardware config which may be more appropriate depending on what 245 * your driver/device needs to do. 246 */ 247struct ieee80211_bss_conf { 248 const u8 *bssid; 249 /* association related data */ 250 bool assoc, ibss_joined; 251 u16 aid; 252 /* erp related data */ 253 bool use_cts_prot; 254 bool use_short_preamble; 255 bool use_short_slot; 256 bool enable_beacon; 257 u8 dtim_period; 258 u16 beacon_int; 259 u16 assoc_capability; 260 u64 timestamp; 261 u32 basic_rates; 262 int mcast_rate[IEEE80211_NUM_BANDS]; 263 u16 ht_operation_mode; 264 s32 cqm_rssi_thold; 265 u32 cqm_rssi_hyst; 266 enum nl80211_channel_type channel_type; 267 __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; 268 u8 arp_addr_cnt; 269 bool arp_filter_enabled; 270 bool qos; 271 bool idle; 272}; 273 274/** 275 * enum mac80211_tx_control_flags - flags to describe transmission information/status 276 * 277 * These flags are used with the @flags member of &ieee80211_tx_info. 278 * 279 * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. 280 * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence 281 * number to this frame, taking care of not overwriting the fragment 282 * number and increasing the sequence number only when the 283 * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly 284 * assign sequence numbers to QoS-data frames but cannot do so correctly 285 * for non-QoS-data and management frames because beacons need them from 286 * that counter as well and mac80211 cannot guarantee proper sequencing. 287 * If this flag is set, the driver should instruct the hardware to 288 * assign a sequence number to the frame or assign one itself. Cf. IEEE 289 * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for 290 * beacons and always be clear for frames without a sequence number field. 291 * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack 292 * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination 293 * station 294 * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame 295 * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon 296 * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU 297 * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. 298 * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted 299 * because the destination STA was in powersave mode. Note that to 300 * avoid race conditions, the filter must be set by the hardware or 301 * firmware upon receiving a frame that indicates that the station 302 * went to sleep (must be done on device to filter frames already on 303 * the queue) and may only be unset after mac80211 gives the OK for 304 * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), 305 * since only then is it guaranteed that no more frames are in the 306 * hardware queue. 307 * @IEEE80211_TX_STAT_ACK: Frame was acknowledged 308 * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status 309 * is for the whole aggregation. 310 * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, 311 * so consider using block ack request (BAR). 312 * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be 313 * set by rate control algorithms to indicate probe rate, will 314 * be cleared for fragmented frames (except on the last fragment) 315 * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, 316 * used to indicate that a pending frame requires TX processing before 317 * it can be sent out. 318 * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, 319 * used to indicate that a frame was already retried due to PS 320 * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, 321 * used to indicate frame should not be encrypted 322 * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?) 323 * This frame is a response to a PS-poll frame and should be sent 324 * although the station is in powersave mode. 325 * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the 326 * transmit function after the current frame, this can be used 327 * by drivers to kick the DMA queue only if unset or when the 328 * queue gets full. 329 * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted 330 * after TX status because the destination was asleep, it must not 331 * be modified again (no seqno assignment, crypto, etc.) 332 * @IEEE80211_TX_INTFL_HAS_RADIOTAP: This frame was injected and still 333 * has a radiotap header at skb->data. 334 * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 335 * MLME command (internal to mac80211 to figure out whether to send TX 336 * status to user space) 337 * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame 338 * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this 339 * frame and selects the maximum number of streams that it can use. 340 * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on 341 * the off-channel channel when a remain-on-channel offload is done 342 * in hardware -- normal packets still flow and are expected to be 343 * handled properly by the device. 344 * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP 345 * testing. It will be sent out with incorrect Michael MIC key to allow 346 * TKIP countermeasures to be tested. 347 * 348 * Note: If you have to add new flags to the enumeration, then don't 349 * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary. 350 */ 351enum mac80211_tx_control_flags { 352 IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), 353 IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), 354 IEEE80211_TX_CTL_NO_ACK = BIT(2), 355 IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), 356 IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), 357 IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), 358 IEEE80211_TX_CTL_AMPDU = BIT(6), 359 IEEE80211_TX_CTL_INJECTED = BIT(7), 360 IEEE80211_TX_STAT_TX_FILTERED = BIT(8), 361 IEEE80211_TX_STAT_ACK = BIT(9), 362 IEEE80211_TX_STAT_AMPDU = BIT(10), 363 IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), 364 IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), 365 IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), 366 IEEE80211_TX_INTFL_RETRIED = BIT(15), 367 IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), 368 IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17), 369 IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), 370 IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), 371 IEEE80211_TX_INTFL_HAS_RADIOTAP = BIT(20), 372 IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), 373 IEEE80211_TX_CTL_LDPC = BIT(22), 374 IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), 375 IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25), 376 IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26), 377}; 378 379#define IEEE80211_TX_CTL_STBC_SHIFT 23 380 381/* 382 * This definition is used as a mask to clear all temporary flags, which are 383 * set by the tx handlers for each transmission attempt by the mac80211 stack. 384 */ 385#define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \ 386 IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \ 387 IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \ 388 IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \ 389 IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \ 390 IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_PSPOLL_RESPONSE | \ 391 IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \ 392 IEEE80211_TX_CTL_STBC) 393 394/** 395 * enum mac80211_rate_control_flags - per-rate flags set by the 396 * Rate Control algorithm. 397 * 398 * These flags are set by the Rate control algorithm for each rate during tx, 399 * in the @flags member of struct ieee80211_tx_rate. 400 * 401 * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. 402 * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. 403 * This is set if the current BSS requires ERP protection. 404 * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. 405 * @IEEE80211_TX_RC_MCS: HT rate. 406 * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in 407 * Greenfield mode. 408 * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. 409 * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the 410 * adjacent 20 MHz channels, if the current channel type is 411 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. 412 * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. 413 */ 414enum mac80211_rate_control_flags { 415 IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), 416 IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), 417 IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), 418 419 /* rate index is an MCS rate number instead of an index */ 420 IEEE80211_TX_RC_MCS = BIT(3), 421 IEEE80211_TX_RC_GREEN_FIELD = BIT(4), 422 IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), 423 IEEE80211_TX_RC_DUP_DATA = BIT(6), 424 IEEE80211_TX_RC_SHORT_GI = BIT(7), 425}; 426 427 428/* there are 40 bytes if you don't need the rateset to be kept */ 429#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 430 431/* if you do need the rateset, then you have less space */ 432#define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 433 434/* maximum number of rate stages */ 435#define IEEE80211_TX_MAX_RATES 5 436 437/** 438 * struct ieee80211_tx_rate - rate selection/status 439 * 440 * @idx: rate index to attempt to send with 441 * @flags: rate control flags (&enum mac80211_rate_control_flags) 442 * @count: number of tries in this rate before going to the next rate 443 * 444 * A value of -1 for @idx indicates an invalid rate and, if used 445 * in an array of retry rates, that no more rates should be tried. 446 * 447 * When used for transmit status reporting, the driver should 448 * always report the rate along with the flags it used. 449 * 450 * &struct ieee80211_tx_info contains an array of these structs 451 * in the control information, and it will be filled by the rate 452 * control algorithm according to what should be sent. For example, 453 * if this array contains, in the format { <idx>, <count> } the 454 * information 455 * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } 456 * then this means that the frame should be transmitted 457 * up to twice at rate 3, up to twice at rate 2, and up to four 458 * times at rate 1 if it doesn't get acknowledged. Say it gets 459 * acknowledged by the peer after the fifth attempt, the status 460 * information should then contain 461 * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... 462 * since it was transmitted twice at rate 3, twice at rate 2 463 * and once at rate 1 after which we received an acknowledgement. 464 */ 465struct ieee80211_tx_rate { 466 s8 idx; 467 u8 count; 468 u8 flags; 469} __packed; 470 471/** 472 * struct ieee80211_tx_info - skb transmit information 473 * 474 * This structure is placed in skb->cb for three uses: 475 * (1) mac80211 TX control - mac80211 tells the driver what to do 476 * (2) driver internal use (if applicable) 477 * (3) TX status information - driver tells mac80211 what happened 478 * 479 * The TX control's sta pointer is only valid during the ->tx call, 480 * it may be NULL. 481 * 482 * @flags: transmit info flags, defined above 483 * @band: the band to transmit on (use for checking for races) 484 * @antenna_sel_tx: antenna to use, 0 for automatic diversity 485 * @pad: padding, ignore 486 * @control: union for control data 487 * @status: union for status data 488 * @driver_data: array of driver_data pointers 489 * @ampdu_ack_len: number of acked aggregated frames. 490 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 491 * @ampdu_len: number of aggregated frames. 492 * relevant only if IEEE80211_TX_STAT_AMPDU was set. 493 * @ack_signal: signal strength of the ACK frame 494 */ 495struct ieee80211_tx_info { 496 /* common information */ 497 u32 flags; 498 u8 band; 499 500 u8 antenna_sel_tx; 501 502 /* 2 byte hole */ 503 u8 pad[2]; 504 505 union { 506 struct { 507 union { 508 /* rate control */ 509 struct { 510 struct ieee80211_tx_rate rates[ 511 IEEE80211_TX_MAX_RATES]; 512 s8 rts_cts_rate_idx; 513 }; 514 /* only needed before rate control */ 515 unsigned long jiffies; 516 }; 517 /* NB: vif can be NULL for injected frames */ 518 struct ieee80211_vif *vif; 519 struct ieee80211_key_conf *hw_key; 520 struct ieee80211_sta *sta; 521 } control; 522 struct { 523 struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; 524 u8 ampdu_ack_len; 525 int ack_signal; 526 u8 ampdu_len; 527 /* 15 bytes free */ 528 } status; 529 struct { 530 struct ieee80211_tx_rate driver_rates[ 531 IEEE80211_TX_MAX_RATES]; 532 void *rate_driver_data[ 533 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; 534 }; 535 void *driver_data[ 536 IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; 537 }; 538}; 539 540/** 541 * struct ieee80211_sched_scan_ies - scheduled scan IEs 542 * 543 * This structure is used to pass the appropriate IEs to be used in scheduled 544 * scans for all bands. It contains both the IEs passed from the userspace 545 * and the ones generated by mac80211. 546 * 547 * @ie: array with the IEs for each supported band 548 * @len: array with the total length of the IEs for each band 549 */ 550struct ieee80211_sched_scan_ies { 551 u8 *ie[IEEE80211_NUM_BANDS]; 552 size_t len[IEEE80211_NUM_BANDS]; 553}; 554 555static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) 556{ 557 return (struct ieee80211_tx_info *)skb->cb; 558} 559 560static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) 561{ 562 return (struct ieee80211_rx_status *)skb->cb; 563} 564 565/** 566 * ieee80211_tx_info_clear_status - clear TX status 567 * 568 * @info: The &struct ieee80211_tx_info to be cleared. 569 * 570 * When the driver passes an skb back to mac80211, it must report 571 * a number of things in TX status. This function clears everything 572 * in the TX status but the rate control information (it does clear 573 * the count since you need to fill that in anyway). 574 * 575 * NOTE: You can only use this function if you do NOT use 576 * info->driver_data! Use info->rate_driver_data 577 * instead if you need only the less space that allows. 578 */ 579static inline void 580ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) 581{ 582 int i; 583 584 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 585 offsetof(struct ieee80211_tx_info, control.rates)); 586 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 587 offsetof(struct ieee80211_tx_info, driver_rates)); 588 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); 589 /* clear the rate counts */ 590 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) 591 info->status.rates[i].count = 0; 592 593 BUILD_BUG_ON( 594 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); 595 memset(&info->status.ampdu_ack_len, 0, 596 sizeof(struct ieee80211_tx_info) - 597 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); 598} 599 600 601/** 602 * enum mac80211_rx_flags - receive flags 603 * 604 * These flags are used with the @flag member of &struct ieee80211_rx_status. 605 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. 606 * Use together with %RX_FLAG_MMIC_STRIPPED. 607 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. 608 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, 609 * verification has been done by the hardware. 610 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. 611 * If this flag is set, the stack cannot do any replay detection 612 * hence the driver or hardware will have to do that. 613 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on 614 * the frame. 615 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on 616 * the frame. 617 * @RX_FLAG_MACTIME_MPDU: The timestamp passed in the RX status (@mactime 618 * field) is valid and contains the time the first symbol of the MPDU 619 * was received. This is useful in monitor mode and for proper IBSS 620 * merging. 621 * @RX_FLAG_SHORTPRE: Short preamble was used for this frame 622 * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index 623 * @RX_FLAG_40MHZ: HT40 (40 MHz) was used 624 * @RX_FLAG_SHORT_GI: Short guard interval was used 625 */ 626enum mac80211_rx_flags { 627 RX_FLAG_MMIC_ERROR = 1<<0, 628 RX_FLAG_DECRYPTED = 1<<1, 629 RX_FLAG_MMIC_STRIPPED = 1<<3, 630 RX_FLAG_IV_STRIPPED = 1<<4, 631 RX_FLAG_FAILED_FCS_CRC = 1<<5, 632 RX_FLAG_FAILED_PLCP_CRC = 1<<6, 633 RX_FLAG_MACTIME_MPDU = 1<<7, 634 RX_FLAG_SHORTPRE = 1<<8, 635 RX_FLAG_HT = 1<<9, 636 RX_FLAG_40MHZ = 1<<10, 637 RX_FLAG_SHORT_GI = 1<<11, 638}; 639 640/** 641 * struct ieee80211_rx_status - receive status 642 * 643 * The low-level driver should provide this information (the subset 644 * supported by hardware) to the 802.11 code with each received 645 * frame, in the skb's control buffer (cb). 646 * 647 * @mactime: value in microseconds of the 64-bit Time Synchronization Function 648 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. 649 * @band: the active band when this frame was received 650 * @freq: frequency the radio was tuned to when receiving this frame, in MHz 651 * @signal: signal strength when receiving this frame, either in dBm, in dB or 652 * unspecified depending on the hardware capabilities flags 653 * @IEEE80211_HW_SIGNAL_* 654 * @antenna: antenna used 655 * @rate_idx: index of data rate into band's supported rates or MCS index if 656 * HT rates are use (RX_FLAG_HT) 657 * @flag: %RX_FLAG_* 658 * @rx_flags: internal RX flags for mac80211 659 */ 660struct ieee80211_rx_status { 661 u64 mactime; 662 enum ieee80211_band band; 663 int freq; 664 int signal; 665 int antenna; 666 int rate_idx; 667 int flag; 668 unsigned int rx_flags; 669}; 670 671/** 672 * enum ieee80211_conf_flags - configuration flags 673 * 674 * Flags to define PHY configuration options 675 * 676 * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this 677 * to determine for example whether to calculate timestamps for packets 678 * or not, do not use instead of filter flags! 679 * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). 680 * This is the power save mode defined by IEEE 802.11-2007 section 11.2, 681 * meaning that the hardware still wakes up for beacons, is able to 682 * transmit frames and receive the possible acknowledgment frames. 683 * Not to be confused with hardware specific wakeup/sleep states, 684 * driver is responsible for that. See the section "Powersave support" 685 * for more. 686 * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set 687 * the driver should be prepared to handle configuration requests but 688 * may turn the device off as much as possible. Typically, this flag will 689 * be set when an interface is set UP but not associated or scanning, but 690 * it can also be unset in that case when monitor interfaces are active. 691 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main 692 * operating channel. 693 */ 694enum ieee80211_conf_flags { 695 IEEE80211_CONF_MONITOR = (1<<0), 696 IEEE80211_CONF_PS = (1<<1), 697 IEEE80211_CONF_IDLE = (1<<2), 698 IEEE80211_CONF_OFFCHANNEL = (1<<3), 699}; 700 701 702/** 703 * enum ieee80211_conf_changed - denotes which configuration changed 704 * 705 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed 706 * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed 707 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed 708 * @IEEE80211_CONF_CHANGE_POWER: the TX power changed 709 * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed 710 * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed 711 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed 712 * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed 713 */ 714enum ieee80211_conf_changed { 715 IEEE80211_CONF_CHANGE_SMPS = BIT(1), 716 IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), 717 IEEE80211_CONF_CHANGE_MONITOR = BIT(3), 718 IEEE80211_CONF_CHANGE_PS = BIT(4), 719 IEEE80211_CONF_CHANGE_POWER = BIT(5), 720 IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), 721 IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), 722 IEEE80211_CONF_CHANGE_IDLE = BIT(8), 723}; 724 725/** 726 * enum ieee80211_smps_mode - spatial multiplexing power save mode 727 * 728 * @IEEE80211_SMPS_AUTOMATIC: automatic 729 * @IEEE80211_SMPS_OFF: off 730 * @IEEE80211_SMPS_STATIC: static 731 * @IEEE80211_SMPS_DYNAMIC: dynamic 732 * @IEEE80211_SMPS_NUM_MODES: internal, don't use 733 */ 734enum ieee80211_smps_mode { 735 IEEE80211_SMPS_AUTOMATIC, 736 IEEE80211_SMPS_OFF, 737 IEEE80211_SMPS_STATIC, 738 IEEE80211_SMPS_DYNAMIC, 739 740 /* keep last */ 741 IEEE80211_SMPS_NUM_MODES, 742}; 743 744/** 745 * struct ieee80211_conf - configuration of the device 746 * 747 * This struct indicates how the driver shall configure the hardware. 748 * 749 * @flags: configuration flags defined above 750 * 751 * @listen_interval: listen interval in units of beacon interval 752 * @max_sleep_period: the maximum number of beacon intervals to sleep for 753 * before checking the beacon for a TIM bit (managed mode only); this 754 * value will be only achievable between DTIM frames, the hardware 755 * needs to check for the multicast traffic bit in DTIM beacons. 756 * This variable is valid only when the CONF_PS flag is set. 757 * @ps_dtim_period: The DTIM period of the AP we're connected to, for use 758 * in power saving. Power saving will not be enabled until a beacon 759 * has been received and the DTIM period is known. 760 * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the 761 * powersave documentation below. This variable is valid only when 762 * the CONF_PS flag is set. 763 * 764 * @power_level: requested transmit power (in dBm) 765 * 766 * @channel: the channel to tune to 767 * @channel_type: the channel (HT) type 768 * 769 * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame 770 * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, 771 * but actually means the number of transmissions not the number of retries 772 * @short_frame_max_tx_count: Maximum number of transmissions for a "short" 773 * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the 774 * number of transmissions not the number of retries 775 * 776 * @smps_mode: spatial multiplexing powersave mode; note that 777 * %IEEE80211_SMPS_STATIC is used when the device is not 778 * configured for an HT channel 779 */ 780struct ieee80211_conf { 781 u32 flags; 782 int power_level, dynamic_ps_timeout; 783 int max_sleep_period; 784 785 u16 listen_interval; 786 u8 ps_dtim_period; 787 788 u8 long_frame_max_tx_count, short_frame_max_tx_count; 789 790 struct ieee80211_channel *channel; 791 enum nl80211_channel_type channel_type; 792 enum ieee80211_smps_mode smps_mode; 793}; 794 795/** 796 * struct ieee80211_channel_switch - holds the channel switch data 797 * 798 * The information provided in this structure is required for channel switch 799 * operation. 800 * 801 * @timestamp: value in microseconds of the 64-bit Time Synchronization 802 * Function (TSF) timer when the frame containing the channel switch 803 * announcement was received. This is simply the rx.mactime parameter 804 * the driver passed into mac80211. 805 * @block_tx: Indicates whether transmission must be blocked before the 806 * scheduled channel switch, as indicated by the AP. 807 * @channel: the new channel to switch to 808 * @count: the number of TBTT's until the channel switch event 809 */ 810struct ieee80211_channel_switch { 811 u64 timestamp; 812 bool block_tx; 813 struct ieee80211_channel *channel; 814 u8 count; 815}; 816 817/** 818 * struct ieee80211_vif - per-interface data 819 * 820 * Data in this structure is continually present for driver 821 * use during the life of a virtual interface. 822 * 823 * @type: type of this virtual interface 824 * @bss_conf: BSS configuration for this interface, either our own 825 * or the BSS we're associated to 826 * @addr: address of this interface 827 * @p2p: indicates whether this AP or STA interface is a p2p 828 * interface, i.e. a GO or p2p-sta respectively 829 * @drv_priv: data area for driver use, will always be aligned to 830 * sizeof(void *). 831 */ 832struct ieee80211_vif { 833 enum nl80211_iftype type; 834 struct ieee80211_bss_conf bss_conf; 835 u8 addr[ETH_ALEN]; 836 bool p2p; 837 /* must be last */ 838 u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); 839}; 840 841static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) 842{ 843#ifdef CONFIG_MAC80211_MESH 844 return vif->type == NL80211_IFTYPE_MESH_POINT; 845#endif 846 return false; 847} 848 849/** 850 * enum ieee80211_key_flags - key flags 851 * 852 * These flags are used for communication about keys between the driver 853 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. 854 * 855 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates 856 * that the STA this key will be used with could be using QoS. 857 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the 858 * driver to indicate that it requires IV generation for this 859 * particular key. 860 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by 861 * the driver for a TKIP key if it requires Michael MIC 862 * generation in software. 863 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates 864 * that the key is pairwise rather then a shared key. 865 * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a 866 * CCMP key if it requires CCMP encryption of management frames (MFP) to 867 * be done in software. 868 */ 869enum ieee80211_key_flags { 870 IEEE80211_KEY_FLAG_WMM_STA = 1<<0, 871 IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, 872 IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, 873 IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, 874 IEEE80211_KEY_FLAG_SW_MGMT = 1<<4, 875}; 876 877/** 878 * struct ieee80211_key_conf - key information 879 * 880 * This key information is given by mac80211 to the driver by 881 * the set_key() callback in &struct ieee80211_ops. 882 * 883 * @hw_key_idx: To be set by the driver, this is the key index the driver 884 * wants to be given when a frame is transmitted and needs to be 885 * encrypted in hardware. 886 * @cipher: The key's cipher suite selector. 887 * @flags: key flags, see &enum ieee80211_key_flags. 888 * @keyidx: the key index (0-3) 889 * @keylen: key material length 890 * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) 891 * data block: 892 * - Temporal Encryption Key (128 bits) 893 * - Temporal Authenticator Tx MIC Key (64 bits) 894 * - Temporal Authenticator Rx MIC Key (64 bits) 895 * @icv_len: The ICV length for this key type 896 * @iv_len: The IV length for this key type 897 */ 898struct ieee80211_key_conf { 899 u32 cipher; 900 u8 icv_len; 901 u8 iv_len; 902 u8 hw_key_idx; 903 u8 flags; 904 s8 keyidx; 905 u8 keylen; 906 u8 key[0]; 907}; 908 909/** 910 * enum set_key_cmd - key command 911 * 912 * Used with the set_key() callback in &struct ieee80211_ops, this 913 * indicates whether a key is being removed or added. 914 * 915 * @SET_KEY: a key is set 916 * @DISABLE_KEY: a key must be disabled 917 */ 918enum set_key_cmd { 919 SET_KEY, DISABLE_KEY, 920}; 921 922/** 923 * struct ieee80211_sta - station table entry 924 * 925 * A station table entry represents a station we are possibly 926 * communicating with. Since stations are RCU-managed in 927 * mac80211, any ieee80211_sta pointer you get access to must 928 * either be protected by rcu_read_lock() explicitly or implicitly, 929 * or you must take good care to not use such a pointer after a 930 * call to your sta_remove callback that removed it. 931 * 932 * @addr: MAC address 933 * @aid: AID we assigned to the station if we're an AP 934 * @supp_rates: Bitmap of supported rates (per band) 935 * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities 936 * @wme: indicates whether the STA supports WME. Only valid during AP-mode. 937 * @drv_priv: data area for driver use, will always be aligned to 938 * sizeof(void *), size is determined in hw information. 939 */ 940struct ieee80211_sta { 941 u32 supp_rates[IEEE80211_NUM_BANDS]; 942 u8 addr[ETH_ALEN]; 943 u16 aid; 944 struct ieee80211_sta_ht_cap ht_cap; 945 bool wme; 946 947 /* must be last */ 948 u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); 949}; 950 951/** 952 * enum sta_notify_cmd - sta notify command 953 * 954 * Used with the sta_notify() callback in &struct ieee80211_ops, this 955 * indicates if an associated station made a power state transition. 956 * 957 * @STA_NOTIFY_SLEEP: a station is now sleeping 958 * @STA_NOTIFY_AWAKE: a sleeping station woke up 959 */ 960enum sta_notify_cmd { 961 STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, 962}; 963 964/** 965 * enum ieee80211_tkip_key_type - get tkip key 966 * 967 * Used by drivers which need to get a tkip key for skb. Some drivers need a 968 * phase 1 key, others need a phase 2 key. A single function allows the driver 969 * to get the key, this enum indicates what type of key is required. 970 * 971 * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key 972 * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key 973 */ 974enum ieee80211_tkip_key_type { 975 IEEE80211_TKIP_P1_KEY, 976 IEEE80211_TKIP_P2_KEY, 977}; 978 979/** 980 * enum ieee80211_hw_flags - hardware flags 981 * 982 * These flags are used to indicate hardware capabilities to 983 * the stack. Generally, flags here should have their meaning 984 * done in a way that the simplest hardware doesn't need setting 985 * any particular flags. There are some exceptions to this rule, 986 * however, so you are advised to review these flags carefully. 987 * 988 * @IEEE80211_HW_HAS_RATE_CONTROL: 989 * The hardware or firmware includes rate control, and cannot be 990 * controlled by the stack. As such, no rate control algorithm 991 * should be instantiated, and the TX rate reported to userspace 992 * will be taken from the TX status instead of the rate control 993 * algorithm. 994 * Note that this requires that the driver implement a number of 995 * callbacks so it has the correct information, it needs to have 996 * the @set_rts_threshold callback and must look at the BSS config 997 * @use_cts_prot for G/N protection, @use_short_slot for slot 998 * timing in 2.4 GHz and @use_short_preamble for preambles for 999 * CCK frames. 1000 * 1001 * @IEEE80211_HW_RX_INCLUDES_FCS: 1002 * Indicates that received frames passed to the stack include 1003 * the FCS at the end. 1004 * 1005 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: 1006 * Some wireless LAN chipsets buffer broadcast/multicast frames 1007 * for power saving stations in the hardware/firmware and others 1008 * rely on the host system for such buffering. This option is used 1009 * to configure the IEEE 802.11 upper layer to buffer broadcast and 1010 * multicast frames when there are power saving stations so that 1011 * the driver can fetch them with ieee80211_get_buffered_bc(). 1012 * 1013 * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: 1014 * Hardware is not capable of short slot operation on the 2.4 GHz band. 1015 * 1016 * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: 1017 * Hardware is not capable of receiving frames with short preamble on 1018 * the 2.4 GHz band. 1019 * 1020 * @IEEE80211_HW_SIGNAL_UNSPEC: 1021 * Hardware can provide signal values but we don't know its units. We 1022 * expect values between 0 and @max_signal. 1023 * If possible please provide dB or dBm instead. 1024 * 1025 * @IEEE80211_HW_SIGNAL_DBM: 1026 * Hardware gives signal values in dBm, decibel difference from 1027 * one milliwatt. This is the preferred method since it is standardized 1028 * between different devices. @max_signal does not need to be set. 1029 * 1030 * @IEEE80211_HW_SPECTRUM_MGMT: 1031 * Hardware supports spectrum management defined in 802.11h 1032 * Measurement, Channel Switch, Quieting, TPC 1033 * 1034 * @IEEE80211_HW_AMPDU_AGGREGATION: 1035 * Hardware supports 11n A-MPDU aggregation. 1036 * 1037 * @IEEE80211_HW_SUPPORTS_PS: 1038 * Hardware has power save support (i.e. can go to sleep). 1039 * 1040 * @IEEE80211_HW_PS_NULLFUNC_STACK: 1041 * Hardware requires nullfunc frame handling in stack, implies 1042 * stack support for dynamic PS. 1043 * 1044 * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: 1045 * Hardware has support for dynamic PS. 1046 * 1047 * @IEEE80211_HW_MFP_CAPABLE: 1048 * Hardware supports management frame protection (MFP, IEEE 802.11w). 1049 * 1050 * @IEEE80211_HW_BEACON_FILTER: 1051 * Hardware supports dropping of irrelevant beacon frames to 1052 * avoid waking up cpu. 1053 * 1054 * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: 1055 * Hardware supports static spatial multiplexing powersave, 1056 * ie. can turn off all but one chain even on HT connections 1057 * that should be using more chains. 1058 * 1059 * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: 1060 * Hardware supports dynamic spatial multiplexing powersave, 1061 * ie. can turn off all but one chain and then wake the rest 1062 * up as required after, for example, rts/cts handshake. 1063 * 1064 * @IEEE80211_HW_SUPPORTS_UAPSD: 1065 * Hardware supports Unscheduled Automatic Power Save Delivery 1066 * (U-APSD) in managed mode. The mode is configured with 1067 * conf_tx() operation. 1068 * 1069 * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: 1070 * Hardware can provide ack status reports of Tx frames to 1071 * the stack. 1072 * 1073 * @IEEE80211_HW_CONNECTION_MONITOR: 1074 * The hardware performs its own connection monitoring, including 1075 * periodic keep-alives to the AP and probing the AP on beacon loss. 1076 * When this flag is set, signaling beacon-loss will cause an immediate 1077 * change to disassociated state. 1078 * 1079 * @IEEE80211_HW_SUPPORTS_CQM_RSSI: 1080 * Hardware can do connection quality monitoring - i.e. it can monitor 1081 * connection quality related parameters, such as the RSSI level and 1082 * provide notifications if configured trigger levels are reached. 1083 * 1084 * @IEEE80211_HW_NEED_DTIM_PERIOD: 1085 * This device needs to know the DTIM period for the BSS before 1086 * associating. 1087 * 1088 * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports 1089 * per-station GTKs as used by IBSS RSN or during fast transition. If 1090 * the device doesn't support per-station GTKs, but can be asked not 1091 * to decrypt group addressed frames, then IBSS RSN support is still 1092 * possible but software crypto will be used. Advertise the wiphy flag 1093 * only in that case. 1094 * 1095 * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device 1096 * autonomously manages the PS status of connected stations. When 1097 * this flag is set mac80211 will not trigger PS mode for connected 1098 * stations based on the PM bit of incoming frames. 1099 * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure 1100 * the PS mode of connected stations. 1101 */ 1102enum ieee80211_hw_flags { 1103 IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, 1104 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, 1105 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, 1106 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, 1107 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, 1108 IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, 1109 IEEE80211_HW_SIGNAL_DBM = 1<<6, 1110 IEEE80211_HW_NEED_DTIM_PERIOD = 1<<7, 1111 IEEE80211_HW_SPECTRUM_MGMT = 1<<8, 1112 IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, 1113 IEEE80211_HW_SUPPORTS_PS = 1<<10, 1114 IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, 1115 IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, 1116 IEEE80211_HW_MFP_CAPABLE = 1<<13, 1117 IEEE80211_HW_BEACON_FILTER = 1<<14, 1118 IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, 1119 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, 1120 IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, 1121 IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, 1122 IEEE80211_HW_CONNECTION_MONITOR = 1<<19, 1123 IEEE80211_HW_SUPPORTS_CQM_RSSI = 1<<20, 1124 IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, 1125 IEEE80211_HW_AP_LINK_PS = 1<<22, 1126}; 1127 1128/** 1129 * struct ieee80211_hw - hardware information and state 1130 * 1131 * This structure contains the configuration and hardware 1132 * information for an 802.11 PHY. 1133 * 1134 * @wiphy: This points to the &struct wiphy allocated for this 1135 * 802.11 PHY. You must fill in the @perm_addr and @dev 1136 * members of this structure using SET_IEEE80211_DEV() 1137 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported 1138 * bands (with channels, bitrates) are registered here. 1139 * 1140 * @conf: &struct ieee80211_conf, device configuration, don't use. 1141 * 1142 * @priv: pointer to private area that was allocated for driver use 1143 * along with this structure. 1144 * 1145 * @flags: hardware flags, see &enum ieee80211_hw_flags. 1146 * 1147 * @extra_tx_headroom: headroom to reserve in each transmit skb 1148 * for use by the driver (e.g. for transmit headers.) 1149 * 1150 * @channel_change_time: time (in microseconds) it takes to change channels. 1151 * 1152 * @max_signal: Maximum value for signal (rssi) in RX information, used 1153 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB 1154 * 1155 * @max_listen_interval: max listen interval in units of beacon interval 1156 * that HW supports 1157 * 1158 * @queues: number of available hardware transmit queues for 1159 * data packets. WMM/QoS requires at least four, these 1160 * queues need to have configurable access parameters. 1161 * 1162 * @rate_control_algorithm: rate control algorithm for this hardware. 1163 * If unset (NULL), the default algorithm will be used. Must be 1164 * set before calling ieee80211_register_hw(). 1165 * 1166 * @vif_data_size: size (in bytes) of the drv_priv data area 1167 * within &struct ieee80211_vif. 1168 * @sta_data_size: size (in bytes) of the drv_priv data area 1169 * within &struct ieee80211_sta. 1170 * 1171 * @max_rates: maximum number of alternate rate retry stages the hw 1172 * can handle. 1173 * @max_report_rates: maximum number of alternate rate retry stages 1174 * the hw can report back. 1175 * @max_rate_tries: maximum number of tries for each stage 1176 * 1177 * @napi_weight: weight used for NAPI polling. You must specify an 1178 * appropriate value here if a napi_poll operation is provided 1179 * by your driver. 1180 * 1181 * @max_rx_aggregation_subframes: maximum buffer size (number of 1182 * sub-frames) to be used for A-MPDU block ack receiver 1183 * aggregation. 1184 * This is only relevant if the device has restrictions on the 1185 * number of subframes, if it relies on mac80211 to do reordering 1186 * it shouldn't be set. 1187 * 1188 * @max_tx_aggregation_subframes: maximum number of subframes in an 1189 * aggregate an HT driver will transmit, used by the peer as a 1190 * hint to size its reorder buffer. 1191 */ 1192struct ieee80211_hw { 1193 struct ieee80211_conf conf; 1194 struct wiphy *wiphy; 1195 const char *rate_control_algorithm; 1196 void *priv; 1197 u32 flags; 1198 unsigned int extra_tx_headroom; 1199 int channel_change_time; 1200 int vif_data_size; 1201 int sta_data_size; 1202 int napi_weight; 1203 u16 queues; 1204 u16 max_listen_interval; 1205 s8 max_signal; 1206 u8 max_rates; 1207 u8 max_report_rates; 1208 u8 max_rate_tries; 1209 u8 max_rx_aggregation_subframes; 1210 u8 max_tx_aggregation_subframes; 1211}; 1212 1213/** 1214 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy 1215 * 1216 * @wiphy: the &struct wiphy which we want to query 1217 * 1218 * mac80211 drivers can use this to get to their respective 1219 * &struct ieee80211_hw. Drivers wishing to get to their own private 1220 * structure can then access it via hw->priv. Note that mac802111 drivers should 1221 * not use wiphy_priv() to try to get their private driver structure as this 1222 * is already used internally by mac80211. 1223 */ 1224struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); 1225 1226/** 1227 * SET_IEEE80211_DEV - set device for 802.11 hardware 1228 * 1229 * @hw: the &struct ieee80211_hw to set the device for 1230 * @dev: the &struct device of this 802.11 device 1231 */ 1232static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) 1233{ 1234 set_wiphy_dev(hw->wiphy, dev); 1235} 1236 1237/** 1238 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware 1239 * 1240 * @hw: the &struct ieee80211_hw to set the MAC address for 1241 * @addr: the address to set 1242 */ 1243static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) 1244{ 1245 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); 1246} 1247 1248static inline struct ieee80211_rate * 1249ieee80211_get_tx_rate(const struct ieee80211_hw *hw, 1250 const struct ieee80211_tx_info *c) 1251{ 1252 if (WARN_ON(c->control.rates[0].idx < 0)) 1253 return NULL; 1254 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; 1255} 1256 1257static inline struct ieee80211_rate * 1258ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, 1259 const struct ieee80211_tx_info *c) 1260{ 1261 if (c->control.rts_cts_rate_idx < 0) 1262 return NULL; 1263 return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; 1264} 1265 1266static inline struct ieee80211_rate * 1267ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, 1268 const struct ieee80211_tx_info *c, int idx) 1269{ 1270 if (c->control.rates[idx + 1].idx < 0) 1271 return NULL; 1272 return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; 1273} 1274 1275/** 1276 * DOC: Hardware crypto acceleration 1277 * 1278 * mac80211 is capable of taking advantage of many hardware 1279 * acceleration designs for encryption and decryption operations. 1280 * 1281 * The set_key() callback in the &struct ieee80211_ops for a given 1282 * device is called to enable hardware acceleration of encryption and 1283 * decryption. The callback takes a @sta parameter that will be NULL 1284 * for default keys or keys used for transmission only, or point to 1285 * the station information for the peer for individual keys. 1286 * Multiple transmission keys with the same key index may be used when 1287 * VLANs are configured for an access point. 1288 * 1289 * When transmitting, the TX control data will use the @hw_key_idx 1290 * selected by the driver by modifying the &struct ieee80211_key_conf 1291 * pointed to by the @key parameter to the set_key() function. 1292 * 1293 * The set_key() call for the %SET_KEY command should return 0 if 1294 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be 1295 * added; if you return 0 then hw_key_idx must be assigned to the 1296 * hardware key index, you are free to use the full u8 range. 1297 * 1298 * When the cmd is %DISABLE_KEY then it must succeed. 1299 * 1300 * Note that it is permissible to not decrypt a frame even if a key 1301 * for it has been uploaded to hardware, the stack will not make any 1302 * decision based on whether a key has been uploaded or not but rather 1303 * based on the receive flags. 1304 * 1305 * The &struct ieee80211_key_conf structure pointed to by the @key 1306 * parameter is guaranteed to be valid until another call to set_key() 1307 * removes it, but it can only be used as a cookie to differentiate 1308 * keys. 1309 * 1310 * In TKIP some HW need to be provided a phase 1 key, for RX decryption 1311 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key 1312 * handler. 1313 * The update_tkip_key() call updates the driver with the new phase 1 key. 1314 * This happens every time the iv16 wraps around (every 65536 packets). The 1315 * set_key() call will happen only once for each key (unless the AP did 1316 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is 1317 * provided by update_tkip_key only. The trigger that makes mac80211 call this 1318 * handler is software decryption with wrap around of iv16. 1319 */ 1320 1321/** 1322 * DOC: Powersave support 1323 * 1324 * mac80211 has support for various powersave implementations. 1325 * 1326 * First, it can support hardware that handles all powersaving by itself, 1327 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware 1328 * flag. In that case, it will be told about the desired powersave mode 1329 * with the %IEEE80211_CONF_PS flag depending on the association status. 1330 * The hardware must take care of sending nullfunc frames when necessary, 1331 * i.e. when entering and leaving powersave mode. The hardware is required 1332 * to look at the AID in beacons and signal to the AP that it woke up when 1333 * it finds traffic directed to it. 1334 * 1335 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in 1336 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused 1337 * with hardware wakeup and sleep states. Driver is responsible for waking 1338 * up the hardware before issuing commands to the hardware and putting it 1339 * back to sleep at appropriate times. 1340 * 1341 * When PS is enabled, hardware needs to wakeup for beacons and receive the 1342 * buffered multicast/broadcast frames after the beacon. Also it must be 1343 * possible to send frames and receive the acknowledment frame. 1344 * 1345 * Other hardware designs cannot send nullfunc frames by themselves and also 1346 * need software support for parsing the TIM bitmap. This is also supported 1347 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and 1348 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still 1349 * required to pass up beacons. The hardware is still required to handle 1350 * waking up for multicast traffic; if it cannot the driver must handle that 1351 * as best as it can, mac80211 is too slow to do that. 1352 * 1353 * Dynamic powersave is an extension to normal powersave in which the 1354 * hardware stays awake for a user-specified period of time after sending a 1355 * frame so that reply frames need not be buffered and therefore delayed to 1356 * the next wakeup. It's compromise of getting good enough latency when 1357 * there's data traffic and still saving significantly power in idle 1358 * periods. 1359 * 1360 * Dynamic powersave is simply supported by mac80211 enabling and disabling 1361 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS 1362 * flag and mac80211 will handle everything automatically. Additionally, 1363 * hardware having support for the dynamic PS feature may set the 1364 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support 1365 * dynamic PS mode itself. The driver needs to look at the 1366 * @dynamic_ps_timeout hardware configuration value and use it that value 1367 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable 1368 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS 1369 * enabled whenever user has enabled powersave. 1370 * 1371 * Some hardware need to toggle a single shared antenna between WLAN and 1372 * Bluetooth to facilitate co-existence. These types of hardware set 1373 * limitations on the use of host controlled dynamic powersave whenever there 1374 * is simultaneous WLAN and Bluetooth traffic. For these types of hardware, the 1375 * driver may request temporarily going into full power save, in order to 1376 * enable toggling the antenna between BT and WLAN. If the driver requests 1377 * disabling dynamic powersave, the @dynamic_ps_timeout value will be 1378 * temporarily set to zero until the driver re-enables dynamic powersave. 1379 * 1380 * Driver informs U-APSD client support by enabling 1381 * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the 1382 * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS 1383 * Nullfunc frames and stay awake until the service period has ended. To 1384 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames 1385 * from that AC are transmitted with powersave enabled. 1386 * 1387 * Note: U-APSD client mode is not yet supported with 1388 * %IEEE80211_HW_PS_NULLFUNC_STACK. 1389 */ 1390 1391/** 1392 * DOC: Beacon filter support 1393 * 1394 * Some hardware have beacon filter support to reduce host cpu wakeups 1395 * which will reduce system power consumption. It usuallly works so that 1396 * the firmware creates a checksum of the beacon but omits all constantly 1397 * changing elements (TSF, TIM etc). Whenever the checksum changes the 1398 * beacon is forwarded to the host, otherwise it will be just dropped. That 1399 * way the host will only receive beacons where some relevant information 1400 * (for example ERP protection or WMM settings) have changed. 1401 * 1402 * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER 1403 * hardware capability. The driver needs to enable beacon filter support 1404 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When 1405 * power save is enabled, the stack will not check for beacon loss and the 1406 * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). 1407 * 1408 * The time (or number of beacons missed) until the firmware notifies the 1409 * driver of a beacon loss event (which in turn causes the driver to call 1410 * ieee80211_beacon_loss()) should be configurable and will be controlled 1411 * by mac80211 and the roaming algorithm in the future. 1412 * 1413 * Since there may be constantly changing information elements that nothing 1414 * in the software stack cares about, we will, in the future, have mac80211 1415 * tell the driver which information elements are interesting in the sense 1416 * that we want to see changes in them. This will include 1417 * - a list of information element IDs 1418 * - a list of OUIs for the vendor information element 1419 * 1420 * Ideally, the hardware would filter out any beacons without changes in the 1421 * requested elements, but if it cannot support that it may, at the expense 1422 * of some efficiency, filter out only a subset. For example, if the device 1423 * doesn't support checking for OUIs it should pass up all changes in all 1424 * vendor information elements. 1425 * 1426 * Note that change, for the sake of simplification, also includes information 1427 * elements appearing or disappearing from the beacon. 1428 * 1429 * Some hardware supports an "ignore list" instead, just make sure nothing 1430 * that was requested is on the ignore list, and include commonly changing 1431 * information element IDs in the ignore list, for example 11 (BSS load) and 1432 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, 1433 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility 1434 * it could also include some currently unused IDs. 1435 * 1436 * 1437 * In addition to these capabilities, hardware should support notifying the 1438 * host of changes in the beacon RSSI. This is relevant to implement roaming 1439 * when no traffic is flowing (when traffic is flowing we see the RSSI of 1440 * the received data packets). This can consist in notifying the host when 1441 * the RSSI changes significantly or when it drops below or rises above 1442 * configurable thresholds. In the future these thresholds will also be 1443 * configured by mac80211 (which gets them from userspace) to implement 1444 * them as the roaming algorithm requires. 1445 * 1446 * If the hardware cannot implement this, the driver should ask it to 1447 * periodically pass beacon frames to the host so that software can do the 1448 * signal strength threshold checking. 1449 */ 1450 1451/** 1452 * DOC: Spatial multiplexing power save 1453 * 1454 * SMPS (Spatial multiplexing power save) is a mechanism to conserve 1455 * power in an 802.11n implementation. For details on the mechanism 1456 * and rationale, please refer to 802.11 (as amended by 802.11n-2009) 1457 * "11.2.3 SM power save". 1458 * 1459 * The mac80211 implementation is capable of sending action frames 1460 * to update the AP about the station's SMPS mode, and will instruct 1461 * the driver to enter the specific mode. It will also announce the 1462 * requested SMPS mode during the association handshake. Hardware 1463 * support for this feature is required, and can be indicated by 1464 * hardware flags. 1465 * 1466 * The default mode will be "automatic", which nl80211/cfg80211 1467 * defines to be dynamic SMPS in (regular) powersave, and SMPS 1468 * turned off otherwise. 1469 * 1470 * To support this feature, the driver must set the appropriate 1471 * hardware support flags, and handle the SMPS flag to the config() 1472 * operation. It will then with this mechanism be instructed to 1473 * enter the requested SMPS mode while associated to an HT AP. 1474 */ 1475 1476/** 1477 * DOC: Frame filtering 1478 * 1479 * mac80211 requires to see many management frames for proper 1480 * operation, and users may want to see many more frames when 1481 * in monitor mode. However, for best CPU usage and power consumption, 1482 * having as few frames as possible percolate through the stack is 1483 * desirable. Hence, the hardware should filter as much as possible. 1484 * 1485 * To achieve this, mac80211 uses filter flags (see below) to tell 1486 * the driver's configure_filter() function which frames should be 1487 * passed to mac80211 and which should be filtered out. 1488 * 1489 * Before configure_filter() is invoked, the prepare_multicast() 1490 * callback is invoked with the parameters @mc_count and @mc_list 1491 * for the combined multicast address list of all virtual interfaces. 1492 * It's use is optional, and it returns a u64 that is passed to 1493 * configure_filter(). Additionally, configure_filter() has the 1494 * arguments @changed_flags telling which flags were changed and 1495 * @total_flags with the new flag states. 1496 * 1497 * If your device has no multicast address filters your driver will 1498 * need to check both the %FIF_ALLMULTI flag and the @mc_count 1499 * parameter to see whether multicast frames should be accepted 1500 * or dropped. 1501 * 1502 * All unsupported flags in @total_flags must be cleared. 1503 * Hardware does not support a flag if it is incapable of _passing_ 1504 * the frame to the stack. Otherwise the driver must ignore 1505 * the flag, but not clear it. 1506 * You must _only_ clear the flag (announce no support for the 1507 * flag to mac80211) if you are not able to pass the packet type 1508 * to the stack (so the hardware always filters it). 1509 * So for example, you should clear @FIF_CONTROL, if your hardware 1510 * always filters control frames. If your hardware always passes 1511 * control frames to the kernel and is incapable of filtering them, 1512 * you do _not_ clear the @FIF_CONTROL flag. 1513 * This rule applies to all other FIF flags as well. 1514 */ 1515 1516/** 1517 * enum ieee80211_filter_flags - hardware filter flags 1518 * 1519 * These flags determine what the filter in hardware should be 1520 * programmed to let through and what should not be passed to the 1521 * stack. It is always safe to pass more frames than requested, 1522 * but this has negative impact on power consumption. 1523 * 1524 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, 1525 * think of the BSS as your network segment and then this corresponds 1526 * to the regular ethernet device promiscuous mode. 1527 * 1528 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested 1529 * by the user or if the hardware is not capable of filtering by 1530 * multicast address. 1531 * 1532 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the 1533 * %RX_FLAG_FAILED_FCS_CRC for them) 1534 * 1535 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set 1536 * the %RX_FLAG_FAILED_PLCP_CRC for them 1537 * 1538 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate 1539 * to the hardware that it should not filter beacons or probe responses 1540 * by BSSID. Filtering them can greatly reduce the amount of processing 1541 * mac80211 needs to do and the amount of CPU wakeups, so you should 1542 * honour this flag if possible. 1543 * 1544 * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS 1545 * is not set then only those addressed to this station. 1546 * 1547 * @FIF_OTHER_BSS: pass frames destined to other BSSes 1548 * 1549 * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only 1550 * those addressed to this station. 1551 * 1552 * @FIF_PROBE_REQ: pass probe request frames 1553 */ 1554enum ieee80211_filter_flags { 1555 FIF_PROMISC_IN_BSS = 1<<0, 1556 FIF_ALLMULTI = 1<<1, 1557 FIF_FCSFAIL = 1<<2, 1558 FIF_PLCPFAIL = 1<<3, 1559 FIF_BCN_PRBRESP_PROMISC = 1<<4, 1560 FIF_CONTROL = 1<<5, 1561 FIF_OTHER_BSS = 1<<6, 1562 FIF_PSPOLL = 1<<7, 1563 FIF_PROBE_REQ = 1<<8, 1564}; 1565 1566/** 1567 * enum ieee80211_ampdu_mlme_action - A-MPDU actions 1568 * 1569 * These flags are used with the ampdu_action() callback in 1570 * &struct ieee80211_ops to indicate which action is needed. 1571 * 1572 * Note that drivers MUST be able to deal with a TX aggregation 1573 * session being stopped even before they OK'ed starting it by 1574 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer 1575 * might receive the addBA frame and send a delBA right away! 1576 * 1577 * @IEEE80211_AMPDU_RX_START: start Rx aggregation 1578 * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation 1579 * @IEEE80211_AMPDU_TX_START: start Tx aggregation 1580 * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation 1581 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational 1582 */ 1583enum ieee80211_ampdu_mlme_action { 1584 IEEE80211_AMPDU_RX_START, 1585 IEEE80211_AMPDU_RX_STOP, 1586 IEEE80211_AMPDU_TX_START, 1587 IEEE80211_AMPDU_TX_STOP, 1588 IEEE80211_AMPDU_TX_OPERATIONAL, 1589}; 1590 1591/** 1592 * struct ieee80211_ops - callbacks from mac80211 to the driver 1593 * 1594 * This structure contains various callbacks that the driver may 1595 * handle or, in some cases, must handle, for example to configure 1596 * the hardware to a new channel or to transmit a frame. 1597 * 1598 * @tx: Handler that 802.11 module calls for each transmitted frame. 1599 * skb contains the buffer starting from the IEEE 802.11 header. 1600 * The low-level driver should send the frame out based on 1601 * configuration in the TX control data. This handler should, 1602 * preferably, never fail and stop queues appropriately, more 1603 * importantly, however, it must never fail for A-MPDU-queues. 1604 * This function should return NETDEV_TX_OK except in very 1605 * limited cases. 1606 * Must be implemented and atomic. 1607 * 1608 * @start: Called before the first netdevice attached to the hardware 1609 * is enabled. This should turn on the hardware and must turn on 1610 * frame reception (for possibly enabled monitor interfaces.) 1611 * Returns negative error codes, these may be seen in userspace, 1612 * or zero. 1613 * When the device is started it should not have a MAC address 1614 * to avoid acknowledging frames before a non-monitor device 1615 * is added. 1616 * Must be implemented and can sleep. 1617 * 1618 * @stop: Called after last netdevice attached to the hardware 1619 * is disabled. This should turn off the hardware (at least 1620 * it must turn off frame reception.) 1621 * May be called right after add_interface if that rejects 1622 * an interface. If you added any work onto the mac80211 workqueue 1623 * you should ensure to cancel it on this callback. 1624 * Must be implemented and can sleep. 1625 * 1626 * @suspend: Suspend the device; mac80211 itself will quiesce before and 1627 * stop transmitting and doing any other configuration, and then 1628 * ask the device to suspend. This is only invoked when WoWLAN is 1629 * configured, otherwise the device is deconfigured completely and 1630 * reconfigured at resume time. 1631 * The driver may also impose special conditions under which it 1632 * wants to use the "normal" suspend (deconfigure), say if it only 1633 * supports WoWLAN when the device is associated. In this case, it 1634 * must return 1 from this function. 1635 * 1636 * @resume: If WoWLAN was configured, this indicates that mac80211 is 1637 * now resuming its operation, after this the device must be fully 1638 * functional again. If this returns an error, the only way out is 1639 * to also unregister the device. If it returns 1, then mac80211 1640 * will also go through the regular complete restart on resume. 1641 * 1642 * @add_interface: Called when a netdevice attached to the hardware is 1643 * enabled. Because it is not called for monitor mode devices, @start 1644 * and @stop must be implemented. 1645 * The driver should perform any initialization it needs before 1646 * the device can be enabled. The initial configuration for the 1647 * interface is given in the conf parameter. 1648 * The callback may refuse to add an interface by returning a 1649 * negative error code (which will be seen in userspace.) 1650 * Must be implemented and can sleep. 1651 * 1652 * @change_interface: Called when a netdevice changes type. This callback 1653 * is optional, but only if it is supported can interface types be 1654 * switched while the interface is UP. The callback may sleep. 1655 * Note that while an interface is being switched, it will not be 1656 * found by the interface iteration callbacks. 1657 * 1658 * @remove_interface: Notifies a driver that an interface is going down. 1659 * The @stop callback is called after this if it is the last interface 1660 * and no monitor interfaces are present. 1661 * When all interfaces are removed, the MAC address in the hardware 1662 * must be cleared so the device no longer acknowledges packets, 1663 * the mac_addr member of the conf structure is, however, set to the 1664 * MAC address of the device going away. 1665 * Hence, this callback must be implemented. It can sleep. 1666 * 1667 * @config: Handler for configuration requests. IEEE 802.11 code calls this 1668 * function to change hardware configuration, e.g., channel. 1669 * This function should never fail but returns a negative error code 1670 * if it does. The callback can sleep. 1671 * 1672 * @bss_info_changed: Handler for configuration requests related to BSS 1673 * parameters that may vary during BSS's lifespan, and may affect low 1674 * level driver (e.g. assoc/disassoc status, erp parameters). 1675 * This function should not be used if no BSS has been set, unless 1676 * for association indication. The @changed parameter indicates which 1677 * of the bss parameters has changed when a call is made. The callback 1678 * can sleep. 1679 * 1680 * @prepare_multicast: Prepare for multicast filter configuration. 1681 * This callback is optional, and its return value is passed 1682 * to configure_filter(). This callback must be atomic. 1683 * 1684 * @configure_filter: Configure the device's RX filter. 1685 * See the section "Frame filtering" for more information. 1686 * This callback must be implemented and can sleep. 1687 * 1688 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit 1689 * must be set or cleared for a given STA. Must be atomic. 1690 * 1691 * @set_key: See the section "Hardware crypto acceleration" 1692 * This callback is only called between add_interface and 1693 * remove_interface calls, i.e. while the given virtual interface 1694 * is enabled. 1695 * Returns a negative error code if the key can't be added. 1696 * The callback can sleep. 1697 * 1698 * @update_tkip_key: See the section "Hardware crypto acceleration" 1699 * This callback will be called in the context of Rx. Called for drivers 1700 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. 1701 * The callback must be atomic. 1702 * 1703 * @hw_scan: Ask the hardware to service the scan request, no need to start 1704 * the scan state machine in stack. The scan must honour the channel 1705 * configuration done by the regulatory agent in the wiphy's 1706 * registered bands. The hardware (or the driver) needs to make sure 1707 * that power save is disabled. 1708 * The @req ie/ie_len members are rewritten by mac80211 to contain the 1709 * entire IEs after the SSID, so that drivers need not look at these 1710 * at all but just send them after the SSID -- mac80211 includes the 1711 * (extended) supported rates and HT information (where applicable). 1712 * When the scan finishes, ieee80211_scan_completed() must be called; 1713 * note that it also must be called when the scan cannot finish due to 1714 * any error unless this callback returned a negative error code. 1715 * The callback can sleep. 1716 * 1717 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan. 1718 * The driver should ask the hardware to cancel the scan (if possible), 1719 * but the scan will be completed only after the driver will call 1720 * ieee80211_scan_completed(). 1721 * This callback is needed for wowlan, to prevent enqueueing a new 1722 * scan_work after the low-level driver was already suspended. 1723 * The callback can sleep. 1724 * 1725 * @sched_scan_start: Ask the hardware to start scanning repeatedly at 1726 * specific intervals. The driver must call the 1727 * ieee80211_sched_scan_results() function whenever it finds results. 1728 * This process will continue until sched_scan_stop is called. 1729 * 1730 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan. 1731 * 1732 * @sw_scan_start: Notifier function that is called just before a software scan 1733 * is started. Can be NULL, if the driver doesn't need this notification. 1734 * The callback can sleep. 1735 * 1736 * @sw_scan_complete: Notifier function that is called just after a 1737 * software scan finished. Can be NULL, if the driver doesn't need 1738 * this notification. 1739 * The callback can sleep. 1740 * 1741 * @get_stats: Return low-level statistics. 1742 * Returns zero if statistics are available. 1743 * The callback can sleep. 1744 * 1745 * @get_tkip_seq: If your device implements TKIP encryption in hardware this 1746 * callback should be provided to read the TKIP transmit IVs (both IV32 1747 * and IV16) for the given key from hardware. 1748 * The callback must be atomic. 1749 * 1750 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this 1751 * if the device does fragmentation by itself; if this callback is 1752 * implemented then the stack will not do fragmentation. 1753 * The callback can sleep. 1754 * 1755 * @set_rts_threshold: Configuration of RTS threshold (if device needs it) 1756 * The callback can sleep. 1757 * 1758 * @sta_add: Notifies low level driver about addition of an associated station, 1759 * AP, IBSS/WDS/mesh peer etc. This callback can sleep. 1760 * 1761 * @sta_remove: Notifies low level driver about removal of an associated 1762 * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. 1763 * 1764 * @sta_notify: Notifies low level driver about power state transition of an 1765 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating 1766 * in AP mode, this callback will not be called when the flag 1767 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. 1768 * 1769 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), 1770 * bursting) for a hardware TX queue. 1771 * Returns a negative error code on failure. 1772 * The callback can sleep. 1773 * 1774 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, 1775 * this is only used for IBSS mode BSSID merging and debugging. Is not a 1776 * required function. 1777 * The callback can sleep. 1778 * 1779 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. 1780 * Currently, this is only used for IBSS mode debugging. Is not a 1781 * required function. 1782 * The callback can sleep. 1783 * 1784 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize 1785 * with other STAs in the IBSS. This is only used in IBSS mode. This 1786 * function is optional if the firmware/hardware takes full care of 1787 * TSF synchronization. 1788 * The callback can sleep. 1789 * 1790 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. 1791 * This is needed only for IBSS mode and the result of this function is 1792 * used to determine whether to reply to Probe Requests. 1793 * Returns non-zero if this device sent the last beacon. 1794 * The callback can sleep. 1795 * 1796 * @ampdu_action: Perform a certain A-MPDU action 1797 * The RA/TID combination determines the destination and TID we want 1798 * the ampdu action to be performed for. The action is defined through 1799 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) 1800 * is the first frame we expect to perform the action on. Notice 1801 * that TX/RX_STOP can pass NULL for this parameter. 1802 * The @buf_size parameter is only valid when the action is set to 1803 * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder 1804 * buffer size (number of subframes) for this session -- the driver 1805 * may neither send aggregates containing more subframes than this 1806 * nor send aggregates in a way that lost frames would exceed the 1807 * buffer size. If just limiting the aggregate size, this would be 1808 * possible with a buf_size of 8: 1809 * - TX: 1.....7 1810 * - RX: 2....7 (lost frame #1) 1811 * - TX: 8..1... 1812 * which is invalid since #1 was now re-transmitted well past the 1813 * buffer size of 8. Correct ways to retransmit #1 would be: 1814 * - TX: 1 or 18 or 81 1815 * Even "189" would be wrong since 1 could be lost again. 1816 * 1817 * Returns a negative error code on failure. 1818 * The callback can sleep. 1819 * 1820 * @get_survey: Return per-channel survey information 1821 * 1822 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also 1823 * need to set wiphy->rfkill_poll to %true before registration, 1824 * and need to call wiphy_rfkill_set_hw_state() in the callback. 1825 * The callback can sleep. 1826 * 1827 * @set_coverage_class: Set slot time for given coverage class as specified 1828 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout 1829 * accordingly. This callback is not required and may sleep. 1830 * 1831 * @testmode_cmd: Implement a cfg80211 test mode command. 1832 * The callback can sleep. 1833 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep. 1834 * 1835 * @flush: Flush all pending frames from the hardware queue, making sure 1836 * that the hardware queues are empty. If the parameter @drop is set 1837 * to %true, pending frames may be dropped. The callback can sleep. 1838 * 1839 * @channel_switch: Drivers that need (or want) to offload the channel 1840 * switch operation for CSAs received from the AP may implement this 1841 * callback. They must then call ieee80211_chswitch_done() to indicate 1842 * completion of the channel switch. 1843 * 1844 * @napi_poll: Poll Rx queue for incoming data frames. 1845 * 1846 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1847 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1848 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1849 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1850 * 1851 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1852 * 1853 * @remain_on_channel: Starts an off-channel period on the given channel, must 1854 * call back to ieee80211_ready_on_channel() when on that channel. Note 1855 * that normal channel traffic is not stopped as this is intended for hw 1856 * offload. Frames to transmit on the off-channel channel are transmitted 1857 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the 1858 * duration (which will always be non-zero) expires, the driver must call 1859 * ieee80211_remain_on_channel_expired(). This callback may sleep. 1860 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is 1861 * aborted before it expires. This callback may sleep. 1862 * @offchannel_tx: Transmit frame on another channel, wait for a response 1863 * and return. Reliable TX status must be reported for the frame. If the 1864 * return value is 1, then the @remain_on_channel will be used with a 1865 * regular transmission (if supported.) 1866 * @offchannel_tx_cancel_wait: cancel wait associated with offchannel TX 1867 * 1868 * @set_ringparam: Set tx and rx ring sizes. 1869 * 1870 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1871 * 1872 * @tx_frames_pending: Check if there is any pending frame in the hardware 1873 * queues before entering power save. 1874 * 1875 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection 1876 * when transmitting a frame. Currently only legacy rates are handled. 1877 * The callback can sleep. 1878 */ 1879struct ieee80211_ops { 1880 void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); 1881 int (*start)(struct ieee80211_hw *hw); 1882 void (*stop)(struct ieee80211_hw *hw); 1883#ifdef CONFIG_PM 1884 int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan); 1885 int (*resume)(struct ieee80211_hw *hw); 1886#endif 1887 int (*add_interface)(struct ieee80211_hw *hw, 1888 struct ieee80211_vif *vif); 1889 int (*change_interface)(struct ieee80211_hw *hw, 1890 struct ieee80211_vif *vif, 1891 enum nl80211_iftype new_type, bool p2p); 1892 void (*remove_interface)(struct ieee80211_hw *hw, 1893 struct ieee80211_vif *vif); 1894 int (*config)(struct ieee80211_hw *hw, u32 changed); 1895 void (*bss_info_changed)(struct ieee80211_hw *hw, 1896 struct ieee80211_vif *vif, 1897 struct ieee80211_bss_conf *info, 1898 u32 changed); 1899 u64 (*prepare_multicast)(struct ieee80211_hw *hw, 1900 struct netdev_hw_addr_list *mc_list); 1901 void (*configure_filter)(struct ieee80211_hw *hw, 1902 unsigned int changed_flags, 1903 unsigned int *total_flags, 1904 u64 multicast); 1905 int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, 1906 bool set); 1907 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, 1908 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 1909 struct ieee80211_key_conf *key); 1910 void (*update_tkip_key)(struct ieee80211_hw *hw, 1911 struct ieee80211_vif *vif, 1912 struct ieee80211_key_conf *conf, 1913 struct ieee80211_sta *sta, 1914 u32 iv32, u16 *phase1key); 1915 int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1916 struct cfg80211_scan_request *req); 1917 void (*cancel_hw_scan)(struct ieee80211_hw *hw, 1918 struct ieee80211_vif *vif); 1919 int (*sched_scan_start)(struct ieee80211_hw *hw, 1920 struct ieee80211_vif *vif, 1921 struct cfg80211_sched_scan_request *req, 1922 struct ieee80211_sched_scan_ies *ies); 1923 void (*sched_scan_stop)(struct ieee80211_hw *hw, 1924 struct ieee80211_vif *vif); 1925 void (*sw_scan_start)(struct ieee80211_hw *hw); 1926 void (*sw_scan_complete)(struct ieee80211_hw *hw); 1927 int (*get_stats)(struct ieee80211_hw *hw, 1928 struct ieee80211_low_level_stats *stats); 1929 void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, 1930 u32 *iv32, u16 *iv16); 1931 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); 1932 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); 1933 int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1934 struct ieee80211_sta *sta); 1935 int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1936 struct ieee80211_sta *sta); 1937 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1938 enum sta_notify_cmd, struct ieee80211_sta *sta); 1939 int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, 1940 const struct ieee80211_tx_queue_params *params); 1941 u64 (*get_tsf)(struct ieee80211_hw *hw); 1942 void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf); 1943 void (*reset_tsf)(struct ieee80211_hw *hw); 1944 int (*tx_last_beacon)(struct ieee80211_hw *hw); 1945 int (*ampdu_action)(struct ieee80211_hw *hw, 1946 struct ieee80211_vif *vif, 1947 enum ieee80211_ampdu_mlme_action action, 1948 struct ieee80211_sta *sta, u16 tid, u16 *ssn, 1949 u8 buf_size); 1950 int (*get_survey)(struct ieee80211_hw *hw, int idx, 1951 struct survey_info *survey); 1952 void (*rfkill_poll)(struct ieee80211_hw *hw); 1953 void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); 1954#ifdef CONFIG_NL80211_TESTMODE 1955 int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); 1956 int (*testmode_dump)(struct ieee80211_hw *hw, struct sk_buff *skb, 1957 struct netlink_callback *cb, 1958 void *data, int len); 1959#endif 1960 void (*flush)(struct ieee80211_hw *hw, bool drop); 1961 void (*channel_switch)(struct ieee80211_hw *hw, 1962 struct ieee80211_channel_switch *ch_switch); 1963 int (*napi_poll)(struct ieee80211_hw *hw, int budget); 1964 int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); 1965 int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); 1966 1967 int (*remain_on_channel)(struct ieee80211_hw *hw, 1968 struct ieee80211_channel *chan, 1969 enum nl80211_channel_type channel_type, 1970 int duration); 1971 int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); 1972 int (*offchannel_tx)(struct ieee80211_hw *hw, struct sk_buff *skb, 1973 struct ieee80211_channel *chan, 1974 enum nl80211_channel_type channel_type, 1975 unsigned int wait); 1976 int (*offchannel_tx_cancel_wait)(struct ieee80211_hw *hw); 1977 int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); 1978 void (*get_ringparam)(struct ieee80211_hw *hw, 1979 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1980 bool (*tx_frames_pending)(struct ieee80211_hw *hw); 1981 int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 1982 const struct cfg80211_bitrate_mask *mask); 1983}; 1984 1985/** 1986 * ieee80211_alloc_hw - Allocate a new hardware device 1987 * 1988 * This must be called once for each hardware device. The returned pointer 1989 * must be used to refer to this device when calling other functions. 1990 * mac80211 allocates a private data area for the driver pointed to by 1991 * @priv in &struct ieee80211_hw, the size of this area is given as 1992 * @priv_data_len. 1993 * 1994 * @priv_data_len: length of private data 1995 * @ops: callbacks for this device 1996 */ 1997struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, 1998 const struct ieee80211_ops *ops); 1999 2000/** 2001 * ieee80211_register_hw - Register hardware device 2002 * 2003 * You must call this function before any other functions in 2004 * mac80211. Note that before a hardware can be registered, you 2005 * need to fill the contained wiphy's information. 2006 * 2007 * @hw: the device to register as returned by ieee80211_alloc_hw() 2008 */ 2009int ieee80211_register_hw(struct ieee80211_hw *hw); 2010 2011/** 2012 * struct ieee80211_tpt_blink - throughput blink description 2013 * @throughput: throughput in Kbit/sec 2014 * @blink_time: blink time in milliseconds 2015 * (full cycle, ie. one off + one on period) 2016 */ 2017struct ieee80211_tpt_blink { 2018 int throughput; 2019 int blink_time; 2020}; 2021 2022/** 2023 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags 2024 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio 2025 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working 2026 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one 2027 * interface is connected in some way, including being an AP 2028 */ 2029enum ieee80211_tpt_led_trigger_flags { 2030 IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), 2031 IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), 2032 IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), 2033}; 2034 2035#ifdef CONFIG_MAC80211_LEDS 2036extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); 2037extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); 2038extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); 2039extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); 2040extern char *__ieee80211_create_tpt_led_trigger( 2041 struct ieee80211_hw *hw, unsigned int flags, 2042 const struct ieee80211_tpt_blink *blink_table, 2043 unsigned int blink_table_len); 2044#endif 2045/** 2046 * ieee80211_get_tx_led_name - get name of TX LED 2047 * 2048 * mac80211 creates a transmit LED trigger for each wireless hardware 2049 * that can be used to drive LEDs if your driver registers a LED device. 2050 * This function returns the name (or %NULL if not configured for LEDs) 2051 * of the trigger so you can automatically link the LED device. 2052 * 2053 * @hw: the hardware to get the LED trigger name for 2054 */ 2055static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) 2056{ 2057#ifdef CONFIG_MAC80211_LEDS 2058 return __ieee80211_get_tx_led_name(hw); 2059#else 2060 return NULL; 2061#endif 2062} 2063 2064/** 2065 * ieee80211_get_rx_led_name - get name of RX LED 2066 * 2067 * mac80211 creates a receive LED trigger for each wireless hardware 2068 * that can be used to drive LEDs if your driver registers a LED device. 2069 * This function returns the name (or %NULL if not configured for LEDs) 2070 * of the trigger so you can automatically link the LED device. 2071 * 2072 * @hw: the hardware to get the LED trigger name for 2073 */ 2074static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) 2075{ 2076#ifdef CONFIG_MAC80211_LEDS 2077 return __ieee80211_get_rx_led_name(hw); 2078#else 2079 return NULL; 2080#endif 2081} 2082 2083/** 2084 * ieee80211_get_assoc_led_name - get name of association LED 2085 * 2086 * mac80211 creates a association LED trigger for each wireless hardware 2087 * that can be used to drive LEDs if your driver registers a LED device. 2088 * This function returns the name (or %NULL if not configured for LEDs) 2089 * of the trigger so you can automatically link the LED device. 2090 * 2091 * @hw: the hardware to get the LED trigger name for 2092 */ 2093static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) 2094{ 2095#ifdef CONFIG_MAC80211_LEDS 2096 return __ieee80211_get_assoc_led_name(hw); 2097#else 2098 return NULL; 2099#endif 2100} 2101 2102/** 2103 * ieee80211_get_radio_led_name - get name of radio LED 2104 * 2105 * mac80211 creates a radio change LED trigger for each wireless hardware 2106 * that can be used to drive LEDs if your driver registers a LED device. 2107 * This function returns the name (or %NULL if not configured for LEDs) 2108 * of the trigger so you can automatically link the LED device. 2109 * 2110 * @hw: the hardware to get the LED trigger name for 2111 */ 2112static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) 2113{ 2114#ifdef CONFIG_MAC80211_LEDS 2115 return __ieee80211_get_radio_led_name(hw); 2116#else 2117 return NULL; 2118#endif 2119} 2120 2121/** 2122 * ieee80211_create_tpt_led_trigger - create throughput LED trigger 2123 * @hw: the hardware to create the trigger for 2124 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags 2125 * @blink_table: the blink table -- needs to be ordered by throughput 2126 * @blink_table_len: size of the blink table 2127 * 2128 * This function returns %NULL (in case of error, or if no LED 2129 * triggers are configured) or the name of the new trigger. 2130 * This function must be called before ieee80211_register_hw(). 2131 */ 2132static inline char * 2133ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, 2134 const struct ieee80211_tpt_blink *blink_table, 2135 unsigned int blink_table_len) 2136{ 2137#ifdef CONFIG_MAC80211_LEDS 2138 return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, 2139 blink_table_len); 2140#else 2141 return NULL; 2142#endif 2143} 2144 2145/** 2146 * ieee80211_unregister_hw - Unregister a hardware device 2147 * 2148 * This function instructs mac80211 to free allocated resources 2149 * and unregister netdevices from the networking subsystem. 2150 * 2151 * @hw: the hardware to unregister 2152 */ 2153void ieee80211_unregister_hw(struct ieee80211_hw *hw); 2154 2155/** 2156 * ieee80211_free_hw - free hardware descriptor 2157 * 2158 * This function frees everything that was allocated, including the 2159 * private data for the driver. You must call ieee80211_unregister_hw() 2160 * before calling this function. 2161 * 2162 * @hw: the hardware to free 2163 */ 2164void ieee80211_free_hw(struct ieee80211_hw *hw); 2165 2166/** 2167 * ieee80211_restart_hw - restart hardware completely 2168 * 2169 * Call this function when the hardware was restarted for some reason 2170 * (hardware error, ...) and the driver is unable to restore its state 2171 * by itself. mac80211 assumes that at this point the driver/hardware 2172 * is completely uninitialised and stopped, it starts the process by 2173 * calling the ->start() operation. The driver will need to reset all 2174 * internal state that it has prior to calling this function. 2175 * 2176 * @hw: the hardware to restart 2177 */ 2178void ieee80211_restart_hw(struct ieee80211_hw *hw); 2179 2180/** ieee80211_napi_schedule - schedule NAPI poll 2181 * 2182 * Use this function to schedule NAPI polling on a device. 2183 * 2184 * @hw: the hardware to start polling 2185 */ 2186void ieee80211_napi_schedule(struct ieee80211_hw *hw); 2187 2188/** ieee80211_napi_complete - complete NAPI polling 2189 * 2190 * Use this function to finish NAPI polling on a device. 2191 * 2192 * @hw: the hardware to stop polling 2193 */ 2194void ieee80211_napi_complete(struct ieee80211_hw *hw); 2195 2196/** 2197 * ieee80211_rx - receive frame 2198 * 2199 * Use this function to hand received frames to mac80211. The receive 2200 * buffer in @skb must start with an IEEE 802.11 header. In case of a 2201 * paged @skb is used, the driver is recommended to put the ieee80211 2202 * header of the frame on the linear part of the @skb to avoid memory 2203 * allocation and/or memcpy by the stack. 2204 * 2205 * This function may not be called in IRQ context. Calls to this function 2206 * for a single hardware must be synchronized against each other. Calls to 2207 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be 2208 * mixed for a single hardware. 2209 * 2210 * In process context use instead ieee80211_rx_ni(). 2211 * 2212 * @hw: the hardware this frame came in on 2213 * @skb: the buffer to receive, owned by mac80211 after this call 2214 */ 2215void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); 2216 2217/** 2218 * ieee80211_rx_irqsafe - receive frame 2219 * 2220 * Like ieee80211_rx() but can be called in IRQ context 2221 * (internally defers to a tasklet.) 2222 * 2223 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not 2224 * be mixed for a single hardware. 2225 * 2226 * @hw: the hardware this frame came in on 2227 * @skb: the buffer to receive, owned by mac80211 after this call 2228 */ 2229void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); 2230 2231/** 2232 * ieee80211_rx_ni - receive frame (in process context) 2233 * 2234 * Like ieee80211_rx() but can be called in process context 2235 * (internally disables bottom halves). 2236 * 2237 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may 2238 * not be mixed for a single hardware. 2239 * 2240 * @hw: the hardware this frame came in on 2241 * @skb: the buffer to receive, owned by mac80211 after this call 2242 */ 2243static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, 2244 struct sk_buff *skb) 2245{ 2246 local_bh_disable(); 2247 ieee80211_rx(hw, skb); 2248 local_bh_enable(); 2249} 2250 2251/** 2252 * ieee80211_sta_ps_transition - PS transition for connected sta 2253 * 2254 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS 2255 * flag set, use this function to inform mac80211 about a connected station 2256 * entering/leaving PS mode. 2257 * 2258 * This function may not be called in IRQ context or with softirqs enabled. 2259 * 2260 * Calls to this function for a single hardware must be synchronized against 2261 * each other. 2262 * 2263 * The function returns -EINVAL when the requested PS mode is already set. 2264 * 2265 * @sta: currently connected sta 2266 * @start: start or stop PS 2267 */ 2268int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); 2269 2270/** 2271 * ieee80211_sta_ps_transition_ni - PS transition for connected sta 2272 * (in process context) 2273 * 2274 * Like ieee80211_sta_ps_transition() but can be called in process context 2275 * (internally disables bottom halves). Concurrent call restriction still 2276 * applies. 2277 * 2278 * @sta: currently connected sta 2279 * @start: start or stop PS 2280 */ 2281static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, 2282 bool start) 2283{ 2284 int ret; 2285 2286 local_bh_disable(); 2287 ret = ieee80211_sta_ps_transition(sta, start); 2288 local_bh_enable(); 2289 2290 return ret; 2291} 2292 2293/* 2294 * The TX headroom reserved by mac80211 for its own tx_status functions. 2295 * This is enough for the radiotap header. 2296 */ 2297#define IEEE80211_TX_STATUS_HEADROOM 13 2298 2299/** 2300 * ieee80211_sta_set_tim - set the TIM bit for a sleeping station 2301 * @sta: &struct ieee80211_sta pointer for the sleeping station 2302 * 2303 * If a driver buffers frames for a powersave station instead of passing 2304 * them back to mac80211 for retransmission, the station needs to be told 2305 * to wake up using the TIM bitmap in the beacon. 2306 * 2307 * This function sets the station's TIM bit - it will be cleared when the 2308 * station wakes up. 2309 */ 2310void ieee80211_sta_set_tim(struct ieee80211_sta *sta); 2311 2312/** 2313 * ieee80211_tx_status - transmit status callback 2314 * 2315 * Call this function for all transmitted frames after they have been 2316 * transmitted. It is permissible to not call this function for 2317 * multicast frames but this can affect statistics. 2318 * 2319 * This function may not be called in IRQ context. Calls to this function 2320 * for a single hardware must be synchronized against each other. Calls 2321 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() 2322 * may not be mixed for a single hardware. 2323 * 2324 * @hw: the hardware the frame was transmitted by 2325 * @skb: the frame that was transmitted, owned by mac80211 after this call 2326 */ 2327void ieee80211_tx_status(struct ieee80211_hw *hw, 2328 struct sk_buff *skb); 2329 2330/** 2331 * ieee80211_tx_status_ni - transmit status callback (in process context) 2332 * 2333 * Like ieee80211_tx_status() but can be called in process context. 2334 * 2335 * Calls to this function, ieee80211_tx_status() and 2336 * ieee80211_tx_status_irqsafe() may not be mixed 2337 * for a single hardware. 2338 * 2339 * @hw: the hardware the frame was transmitted by 2340 * @skb: the frame that was transmitted, owned by mac80211 after this call 2341 */ 2342static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, 2343 struct sk_buff *skb) 2344{ 2345 local_bh_disable(); 2346 ieee80211_tx_status(hw, skb); 2347 local_bh_enable(); 2348} 2349 2350/** 2351 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback 2352 * 2353 * Like ieee80211_tx_status() but can be called in IRQ context 2354 * (internally defers to a tasklet.) 2355 * 2356 * Calls to this function, ieee80211_tx_status() and 2357 * ieee80211_tx_status_ni() may not be mixed for a single hardware. 2358 * 2359 * @hw: the hardware the frame was transmitted by 2360 * @skb: the frame that was transmitted, owned by mac80211 after this call 2361 */ 2362void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, 2363 struct sk_buff *skb); 2364 2365/** 2366 * ieee80211_report_low_ack - report non-responding station 2367 * 2368 * When operating in AP-mode, call this function to report a non-responding 2369 * connected STA. 2370 * 2371 * @sta: the non-responding connected sta 2372 * @num_packets: number of packets sent to @sta without a response 2373 */ 2374void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets); 2375 2376/** 2377 * ieee80211_beacon_get_tim - beacon generation function 2378 * @hw: pointer obtained from ieee80211_alloc_hw(). 2379 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2380 * @tim_offset: pointer to variable that will receive the TIM IE offset. 2381 * Set to 0 if invalid (in non-AP modes). 2382 * @tim_length: pointer to variable that will receive the TIM IE length, 2383 * (including the ID and length bytes!). 2384 * Set to 0 if invalid (in non-AP modes). 2385 * 2386 * If the driver implements beaconing modes, it must use this function to 2387 * obtain the beacon frame/template. 2388 * 2389 * If the beacon frames are generated by the host system (i.e., not in 2390 * hardware/firmware), the driver uses this function to get each beacon 2391 * frame from mac80211 -- it is responsible for calling this function 2392 * before the beacon is needed (e.g. based on hardware interrupt). 2393 * 2394 * If the beacon frames are generated by the device, then the driver 2395 * must use the returned beacon as the template and change the TIM IE 2396 * according to the current DTIM parameters/TIM bitmap. 2397 * 2398 * The driver is responsible for freeing the returned skb. 2399 */ 2400struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, 2401 struct ieee80211_vif *vif, 2402 u16 *tim_offset, u16 *tim_length); 2403 2404/** 2405 * ieee80211_beacon_get - beacon generation function 2406 * @hw: pointer obtained from ieee80211_alloc_hw(). 2407 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2408 * 2409 * See ieee80211_beacon_get_tim(). 2410 */ 2411static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, 2412 struct ieee80211_vif *vif) 2413{ 2414 return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); 2415} 2416 2417/** 2418 * ieee80211_pspoll_get - retrieve a PS Poll template 2419 * @hw: pointer obtained from ieee80211_alloc_hw(). 2420 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2421 * 2422 * Creates a PS Poll a template which can, for example, uploaded to 2423 * hardware. The template must be updated after association so that correct 2424 * AID, BSSID and MAC address is used. 2425 * 2426 * Note: Caller (or hardware) is responsible for setting the 2427 * &IEEE80211_FCTL_PM bit. 2428 */ 2429struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, 2430 struct ieee80211_vif *vif); 2431 2432/** 2433 * ieee80211_nullfunc_get - retrieve a nullfunc template 2434 * @hw: pointer obtained from ieee80211_alloc_hw(). 2435 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2436 * 2437 * Creates a Nullfunc template which can, for example, uploaded to 2438 * hardware. The template must be updated after association so that correct 2439 * BSSID and address is used. 2440 * 2441 * Note: Caller (or hardware) is responsible for setting the 2442 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. 2443 */ 2444struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, 2445 struct ieee80211_vif *vif); 2446 2447/** 2448 * ieee80211_probereq_get - retrieve a Probe Request template 2449 * @hw: pointer obtained from ieee80211_alloc_hw(). 2450 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2451 * @ssid: SSID buffer 2452 * @ssid_len: length of SSID 2453 * @ie: buffer containing all IEs except SSID for the template 2454 * @ie_len: length of the IE buffer 2455 * 2456 * Creates a Probe Request template which can, for example, be uploaded to 2457 * hardware. 2458 */ 2459struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, 2460 struct ieee80211_vif *vif, 2461 const u8 *ssid, size_t ssid_len, 2462 const u8 *ie, size_t ie_len); 2463 2464/** 2465 * ieee80211_rts_get - RTS frame generation function 2466 * @hw: pointer obtained from ieee80211_alloc_hw(). 2467 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2468 * @frame: pointer to the frame that is going to be protected by the RTS. 2469 * @frame_len: the frame length (in octets). 2470 * @frame_txctl: &struct ieee80211_tx_info of the frame. 2471 * @rts: The buffer where to store the RTS frame. 2472 * 2473 * If the RTS frames are generated by the host system (i.e., not in 2474 * hardware/firmware), the low-level driver uses this function to receive 2475 * the next RTS frame from the 802.11 code. The low-level is responsible 2476 * for calling this function before and RTS frame is needed. 2477 */ 2478void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2479 const void *frame, size_t frame_len, 2480 const struct ieee80211_tx_info *frame_txctl, 2481 struct ieee80211_rts *rts); 2482 2483/** 2484 * ieee80211_rts_duration - Get the duration field for an RTS frame 2485 * @hw: pointer obtained from ieee80211_alloc_hw(). 2486 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2487 * @frame_len: the length of the frame that is going to be protected by the RTS. 2488 * @frame_txctl: &struct ieee80211_tx_info of the frame. 2489 * 2490 * If the RTS is generated in firmware, but the host system must provide 2491 * the duration field, the low-level driver uses this function to receive 2492 * the duration field value in little-endian byteorder. 2493 */ 2494__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, 2495 struct ieee80211_vif *vif, size_t frame_len, 2496 const struct ieee80211_tx_info *frame_txctl); 2497 2498/** 2499 * ieee80211_ctstoself_get - CTS-to-self frame generation function 2500 * @hw: pointer obtained from ieee80211_alloc_hw(). 2501 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2502 * @frame: pointer to the frame that is going to be protected by the CTS-to-self. 2503 * @frame_len: the frame length (in octets). 2504 * @frame_txctl: &struct ieee80211_tx_info of the frame. 2505 * @cts: The buffer where to store the CTS-to-self frame. 2506 * 2507 * If the CTS-to-self frames are generated by the host system (i.e., not in 2508 * hardware/firmware), the low-level driver uses this function to receive 2509 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible 2510 * for calling this function before and CTS-to-self frame is needed. 2511 */ 2512void ieee80211_ctstoself_get(struct ieee80211_hw *hw, 2513 struct ieee80211_vif *vif, 2514 const void *frame, size_t frame_len, 2515 const struct ieee80211_tx_info *frame_txctl, 2516 struct ieee80211_cts *cts); 2517 2518/** 2519 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame 2520 * @hw: pointer obtained from ieee80211_alloc_hw(). 2521 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2522 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. 2523 * @frame_txctl: &struct ieee80211_tx_info of the frame. 2524 * 2525 * If the CTS-to-self is generated in firmware, but the host system must provide 2526 * the duration field, the low-level driver uses this function to receive 2527 * the duration field value in little-endian byteorder. 2528 */ 2529__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, 2530 struct ieee80211_vif *vif, 2531 size_t frame_len, 2532 const struct ieee80211_tx_info *frame_txctl); 2533 2534/** 2535 * ieee80211_generic_frame_duration - Calculate the duration field for a frame 2536 * @hw: pointer obtained from ieee80211_alloc_hw(). 2537 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2538 * @frame_len: the length of the frame. 2539 * @rate: the rate at which the frame is going to be transmitted. 2540 * 2541 * Calculate the duration field of some generic frame, given its 2542 * length and transmission rate (in 100kbps). 2543 */ 2544__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, 2545 struct ieee80211_vif *vif, 2546 size_t frame_len, 2547 struct ieee80211_rate *rate); 2548 2549/** 2550 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames 2551 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2552 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2553 * 2554 * Function for accessing buffered broadcast and multicast frames. If 2555 * hardware/firmware does not implement buffering of broadcast/multicast 2556 * frames when power saving is used, 802.11 code buffers them in the host 2557 * memory. The low-level driver uses this function to fetch next buffered 2558 * frame. In most cases, this is used when generating beacon frame. This 2559 * function returns a pointer to the next buffered skb or NULL if no more 2560 * buffered frames are available. 2561 * 2562 * Note: buffered frames are returned only after DTIM beacon frame was 2563 * generated with ieee80211_beacon_get() and the low-level driver must thus 2564 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns 2565 * NULL if the previous generated beacon was not DTIM, so the low-level driver 2566 * does not need to check for DTIM beacons separately and should be able to 2567 * use common code for all beacons. 2568 */ 2569struct sk_buff * 2570ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); 2571 2572/** 2573 * ieee80211_get_tkip_key - get a TKIP rc4 for skb 2574 * 2575 * This function computes a TKIP rc4 key for an skb. It computes 2576 * a phase 1 key if needed (iv16 wraps around). This function is to 2577 * be used by drivers which can do HW encryption but need to compute 2578 * to phase 1/2 key in SW. 2579 * 2580 * @keyconf: the parameter passed with the set key 2581 * @skb: the skb for which the key is needed 2582 * @type: TBD 2583 * @key: a buffer to which the key will be written 2584 */ 2585void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, 2586 struct sk_buff *skb, 2587 enum ieee80211_tkip_key_type type, u8 *key); 2588/** 2589 * ieee80211_wake_queue - wake specific queue 2590 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2591 * @queue: queue number (counted from zero). 2592 * 2593 * Drivers should use this function instead of netif_wake_queue. 2594 */ 2595void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); 2596 2597/** 2598 * ieee80211_stop_queue - stop specific queue 2599 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2600 * @queue: queue number (counted from zero). 2601 * 2602 * Drivers should use this function instead of netif_stop_queue. 2603 */ 2604void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); 2605 2606/** 2607 * ieee80211_queue_stopped - test status of the queue 2608 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2609 * @queue: queue number (counted from zero). 2610 * 2611 * Drivers should use this function instead of netif_stop_queue. 2612 */ 2613 2614int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); 2615 2616/** 2617 * ieee80211_stop_queues - stop all queues 2618 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2619 * 2620 * Drivers should use this function instead of netif_stop_queue. 2621 */ 2622void ieee80211_stop_queues(struct ieee80211_hw *hw); 2623 2624/** 2625 * ieee80211_wake_queues - wake all queues 2626 * @hw: pointer as obtained from ieee80211_alloc_hw(). 2627 * 2628 * Drivers should use this function instead of netif_wake_queue. 2629 */ 2630void ieee80211_wake_queues(struct ieee80211_hw *hw); 2631 2632/** 2633 * ieee80211_scan_completed - completed hardware scan 2634 * 2635 * When hardware scan offload is used (i.e. the hw_scan() callback is 2636 * assigned) this function needs to be called by the driver to notify 2637 * mac80211 that the scan finished. This function can be called from 2638 * any context, including hardirq context. 2639 * 2640 * @hw: the hardware that finished the scan 2641 * @aborted: set to true if scan was aborted 2642 */ 2643void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); 2644 2645/** 2646 * ieee80211_sched_scan_results - got results from scheduled scan 2647 * 2648 * When a scheduled scan is running, this function needs to be called by the 2649 * driver whenever there are new scan results available. 2650 * 2651 * @hw: the hardware that is performing scheduled scans 2652 */ 2653void ieee80211_sched_scan_results(struct ieee80211_hw *hw); 2654 2655/** 2656 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped 2657 * 2658 * When a scheduled scan is running, this function can be called by 2659 * the driver if it needs to stop the scan to perform another task. 2660 * Usual scenarios are drivers that cannot continue the scheduled scan 2661 * while associating, for instance. 2662 * 2663 * @hw: the hardware that is performing scheduled scans 2664 */ 2665void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw); 2666 2667/** 2668 * ieee80211_iterate_active_interfaces - iterate active interfaces 2669 * 2670 * This function iterates over the interfaces associated with a given 2671 * hardware that are currently active and calls the callback for them. 2672 * This function allows the iterator function to sleep, when the iterator 2673 * function is atomic @ieee80211_iterate_active_interfaces_atomic can 2674 * be used. 2675 * Does not iterate over a new interface during add_interface() 2676 * 2677 * @hw: the hardware struct of which the interfaces should be iterated over 2678 * @iterator: the iterator function to call 2679 * @data: first argument of the iterator function 2680 */ 2681void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, 2682 void (*iterator)(void *data, u8 *mac, 2683 struct ieee80211_vif *vif), 2684 void *data); 2685 2686/** 2687 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces 2688 * 2689 * This function iterates over the interfaces associated with a given 2690 * hardware that are currently active and calls the callback for them. 2691 * This function requires the iterator callback function to be atomic, 2692 * if that is not desired, use @ieee80211_iterate_active_interfaces instead. 2693 * Does not iterate over a new interface during add_interface() 2694 * 2695 * @hw: the hardware struct of which the interfaces should be iterated over 2696 * @iterator: the iterator function to call, cannot sleep 2697 * @data: first argument of the iterator function 2698 */ 2699void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, 2700 void (*iterator)(void *data, 2701 u8 *mac, 2702 struct ieee80211_vif *vif), 2703 void *data); 2704 2705/** 2706 * ieee80211_queue_work - add work onto the mac80211 workqueue 2707 * 2708 * Drivers and mac80211 use this to add work onto the mac80211 workqueue. 2709 * This helper ensures drivers are not queueing work when they should not be. 2710 * 2711 * @hw: the hardware struct for the interface we are adding work for 2712 * @work: the work we want to add onto the mac80211 workqueue 2713 */ 2714void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); 2715 2716/** 2717 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue 2718 * 2719 * Drivers and mac80211 use this to queue delayed work onto the mac80211 2720 * workqueue. 2721 * 2722 * @hw: the hardware struct for the interface we are adding work for 2723 * @dwork: delayable work to queue onto the mac80211 workqueue 2724 * @delay: number of jiffies to wait before queueing 2725 */ 2726void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, 2727 struct delayed_work *dwork, 2728 unsigned long delay); 2729 2730/** 2731 * ieee80211_start_tx_ba_session - Start a tx Block Ack session. 2732 * @sta: the station for which to start a BA session 2733 * @tid: the TID to BA on. 2734 * @timeout: session timeout value (in TUs) 2735 * 2736 * Return: success if addBA request was sent, failure otherwise 2737 * 2738 * Although mac80211/low level driver/user space application can estimate 2739 * the need to start aggregation on a certain RA/TID, the session level 2740 * will be managed by the mac80211. 2741 */ 2742int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, 2743 u16 timeout); 2744 2745/** 2746 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. 2747 * @vif: &struct ieee80211_vif pointer from the add_interface callback 2748 * @ra: receiver address of the BA session recipient. 2749 * @tid: the TID to BA on. 2750 * 2751 * This function must be called by low level driver once it has 2752 * finished with preparations for the BA session. It can be called 2753 * from any context. 2754 */ 2755void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 2756 u16 tid); 2757 2758/** 2759 * ieee80211_stop_tx_ba_session - Stop a Block Ack session. 2760 * @sta: the station whose BA session to stop 2761 * @tid: the TID to stop BA. 2762 * 2763 * Return: negative error if the TID is invalid, or no aggregation active 2764 * 2765 * Although mac80211/low level driver/user space application can estimate 2766 * the need to stop aggregation on a certain RA/TID, the session level 2767 * will be managed by the mac80211. 2768 */ 2769int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); 2770 2771/** 2772 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. 2773 * @vif: &struct ieee80211_vif pointer from the add_interface callback 2774 * @ra: receiver address of the BA session recipient. 2775 * @tid: the desired TID to BA on. 2776 * 2777 * This function must be called by low level driver once it has 2778 * finished with preparations for the BA session tear down. It 2779 * can be called from any context. 2780 */ 2781void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, 2782 u16 tid); 2783 2784/** 2785 * ieee80211_find_sta - find a station 2786 * 2787 * @vif: virtual interface to look for station on 2788 * @addr: station's address 2789 * 2790 * This function must be called under RCU lock and the 2791 * resulting pointer is only valid under RCU lock as well. 2792 */ 2793struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, 2794 const u8 *addr); 2795 2796/** 2797 * ieee80211_find_sta_by_ifaddr - find a station on hardware 2798 * 2799 * @hw: pointer as obtained from ieee80211_alloc_hw() 2800 * @addr: remote station's address 2801 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. 2802 * 2803 * This function must be called under RCU lock and the 2804 * resulting pointer is only valid under RCU lock as well. 2805 * 2806 * NOTE: You may pass NULL for localaddr, but then you will just get 2807 * the first STA that matches the remote address 'addr'. 2808 * We can have multiple STA associated with multiple 2809 * logical stations (e.g. consider a station connecting to another 2810 * BSSID on the same AP hardware without disconnecting first). 2811 * In this case, the result of this method with localaddr NULL 2812 * is not reliable. 2813 * 2814 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. 2815 */ 2816struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, 2817 const u8 *addr, 2818 const u8 *localaddr); 2819 2820/** 2821 * ieee80211_sta_block_awake - block station from waking up 2822 * @hw: the hardware 2823 * @pubsta: the station 2824 * @block: whether to block or unblock 2825 * 2826 * Some devices require that all frames that are on the queues 2827 * for a specific station that went to sleep are flushed before 2828 * a poll response or frames after the station woke up can be 2829 * delivered to that it. Note that such frames must be rejected 2830 * by the driver as filtered, with the appropriate status flag. 2831 * 2832 * This function allows implementing this mode in a race-free 2833 * manner. 2834 * 2835 * To do this, a driver must keep track of the number of frames 2836 * still enqueued for a specific station. If this number is not 2837 * zero when the station goes to sleep, the driver must call 2838 * this function to force mac80211 to consider the station to 2839 * be asleep regardless of the station's actual state. Once the 2840 * number of outstanding frames reaches zero, the driver must 2841 * call this function again to unblock the station. That will 2842 * cause mac80211 to be able to send ps-poll responses, and if 2843 * the station queried in the meantime then frames will also 2844 * be sent out as a result of this. Additionally, the driver 2845 * will be notified that the station woke up some time after 2846 * it is unblocked, regardless of whether the station actually 2847 * woke up while blocked or not. 2848 */ 2849void ieee80211_sta_block_awake(struct ieee80211_hw *hw, 2850 struct ieee80211_sta *pubsta, bool block); 2851 2852/** 2853 * ieee80211_iter_keys - iterate keys programmed into the device 2854 * @hw: pointer obtained from ieee80211_alloc_hw() 2855 * @vif: virtual interface to iterate, may be %NULL for all 2856 * @iter: iterator function that will be called for each key 2857 * @iter_data: custom data to pass to the iterator function 2858 * 2859 * This function can be used to iterate all the keys known to 2860 * mac80211, even those that weren't previously programmed into 2861 * the device. This is intended for use in WoWLAN if the device 2862 * needs reprogramming of the keys during suspend. Note that due 2863 * to locking reasons, it is also only safe to call this at few 2864 * spots since it must hold the RTNL and be able to sleep. 2865 */ 2866void ieee80211_iter_keys(struct ieee80211_hw *hw, 2867 struct ieee80211_vif *vif, 2868 void (*iter)(struct ieee80211_hw *hw, 2869 struct ieee80211_vif *vif, 2870 struct ieee80211_sta *sta, 2871 struct ieee80211_key_conf *key, 2872 void *data), 2873 void *iter_data); 2874 2875/** 2876 * ieee80211_ap_probereq_get - retrieve a Probe Request template 2877 * @hw: pointer obtained from ieee80211_alloc_hw(). 2878 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2879 * 2880 * Creates a Probe Request template which can, for example, be uploaded to 2881 * hardware. The template is filled with bssid, ssid and supported rate 2882 * information. This function must only be called from within the 2883 * .bss_info_changed callback function and only in managed mode. The function 2884 * is only useful when the interface is associated, otherwise it will return 2885 * NULL. 2886 */ 2887struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 2888 struct ieee80211_vif *vif); 2889 2890/** 2891 * ieee80211_beacon_loss - inform hardware does not receive beacons 2892 * 2893 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2894 * 2895 * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER and 2896 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the 2897 * hardware is not receiving beacons with this function. 2898 */ 2899void ieee80211_beacon_loss(struct ieee80211_vif *vif); 2900 2901/** 2902 * ieee80211_connection_loss - inform hardware has lost connection to the AP 2903 * 2904 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2905 * 2906 * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER, and 2907 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver 2908 * needs to inform if the connection to the AP has been lost. 2909 * 2910 * This function will cause immediate change to disassociated state, 2911 * without connection recovery attempts. 2912 */ 2913void ieee80211_connection_loss(struct ieee80211_vif *vif); 2914 2915/** 2916 * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm 2917 * 2918 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2919 * 2920 * Some hardware require full power save to manage simultaneous BT traffic 2921 * on the WLAN frequency. Full PSM is required periodically, whenever there are 2922 * burst of BT traffic. The hardware gets information of BT traffic via 2923 * hardware co-existence lines, and consequentially requests mac80211 to 2924 * (temporarily) enter full psm. 2925 * This function will only temporarily disable dynamic PS, not enable PSM if 2926 * it was not already enabled. 2927 * The driver must make sure to re-enable dynamic PS using 2928 * ieee80211_enable_dyn_ps() if the driver has disabled it. 2929 * 2930 */ 2931void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif); 2932 2933/** 2934 * ieee80211_enable_dyn_ps - restore dynamic psm after being disabled 2935 * 2936 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2937 * 2938 * This function restores dynamic PS after being temporarily disabled via 2939 * ieee80211_disable_dyn_ps(). Each ieee80211_disable_dyn_ps() call must 2940 * be coupled with an eventual call to this function. 2941 * 2942 */ 2943void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif); 2944 2945/** 2946 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring 2947 * rssi threshold triggered 2948 * 2949 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2950 * @rssi_event: the RSSI trigger event type 2951 * @gfp: context flags 2952 * 2953 * When the %IEEE80211_HW_SUPPORTS_CQM_RSSI is set, and a connection quality 2954 * monitoring is configured with an rssi threshold, the driver will inform 2955 * whenever the rssi level reaches the threshold. 2956 */ 2957void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 2958 enum nl80211_cqm_rssi_threshold_event rssi_event, 2959 gfp_t gfp); 2960 2961/** 2962 * ieee80211_get_operstate - get the operstate of the vif 2963 * 2964 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2965 * 2966 * The driver might need to know the operstate of the net_device 2967 * (specifically, whether the link is IF_OPER_UP after resume) 2968 */ 2969unsigned char ieee80211_get_operstate(struct ieee80211_vif *vif); 2970 2971/** 2972 * ieee80211_chswitch_done - Complete channel switch process 2973 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2974 * @success: make the channel switch successful or not 2975 * 2976 * Complete the channel switch post-process: set the new operational channel 2977 * and wake up the suspended queues. 2978 */ 2979void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); 2980 2981/** 2982 * ieee80211_request_smps - request SM PS transition 2983 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 2984 * @smps_mode: new SM PS mode 2985 * 2986 * This allows the driver to request an SM PS transition in managed 2987 * mode. This is useful when the driver has more information than 2988 * the stack about possible interference, for example by bluetooth. 2989 */ 2990void ieee80211_request_smps(struct ieee80211_vif *vif, 2991 enum ieee80211_smps_mode smps_mode); 2992 2993/** 2994 * ieee80211_key_removed - disable hw acceleration for key 2995 * @key_conf: The key hw acceleration should be disabled for 2996 * 2997 * This allows drivers to indicate that the given key has been 2998 * removed from hardware acceleration, due to a new key that 2999 * was added. Don't use this if the key can continue to be used 3000 * for TX, if the key restriction is on RX only it is permitted 3001 * to keep the key for TX only and not call this function. 3002 * 3003 * Due to locking constraints, it may only be called during 3004 * @set_key. This function must be allowed to sleep, and the 3005 * key it tries to disable may still be used until it returns. 3006 */ 3007void ieee80211_key_removed(struct ieee80211_key_conf *key_conf); 3008 3009/** 3010 * ieee80211_ready_on_channel - notification of remain-on-channel start 3011 * @hw: pointer as obtained from ieee80211_alloc_hw() 3012 */ 3013void ieee80211_ready_on_channel(struct ieee80211_hw *hw); 3014 3015/** 3016 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired 3017 * @hw: pointer as obtained from ieee80211_alloc_hw() 3018 */ 3019void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); 3020 3021/** 3022 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions 3023 * 3024 * in order not to harm the system performance and user experience, the device 3025 * may request not to allow any rx ba session and tear down existing rx ba 3026 * sessions based on system constraints such as periodic BT activity that needs 3027 * to limit wlan activity (eg.sco or a2dp)." 3028 * in such cases, the intention is to limit the duration of the rx ppdu and 3029 * therefore prevent the peer device to use a-mpdu aggregation. 3030 * 3031 * @vif: &struct ieee80211_vif pointer from the add_interface callback. 3032 * @ba_rx_bitmap: Bit map of open rx ba per tid 3033 * @addr: & to bssid mac address 3034 */ 3035void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, 3036 const u8 *addr); 3037 3038/* Rate control API */ 3039 3040/** 3041 * enum rate_control_changed - flags to indicate which parameter changed 3042 * 3043 * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have 3044 * changed, rate control algorithm can update its internal state if needed. 3045 */ 3046enum rate_control_changed { 3047 IEEE80211_RC_HT_CHANGED = BIT(0) 3048}; 3049 3050/** 3051 * struct ieee80211_tx_rate_control - rate control information for/from RC algo 3052 * 3053 * @hw: The hardware the algorithm is invoked for. 3054 * @sband: The band this frame is being transmitted on. 3055 * @bss_conf: the current BSS configuration 3056 * @reported_rate: The rate control algorithm can fill this in to indicate 3057 * which rate should be reported to userspace as the current rate and 3058 * used for rate calculations in the mesh network. 3059 * @rts: whether RTS will be used for this frame because it is longer than the 3060 * RTS threshold 3061 * @short_preamble: whether mac80211 will request short-preamble transmission 3062 * if the selected rate supports it 3063 * @max_rate_idx: user-requested maximum rate (not MCS for now) 3064 * (deprecated; this will be removed once drivers get updated to use 3065 * rate_idx_mask) 3066 * @rate_idx_mask: user-requested rate mask (not MCS for now) 3067 * @skb: the skb that will be transmitted, the control information in it needs 3068 * to be filled in 3069 * @bss: whether this frame is sent out in AP or IBSS mode 3070 */ 3071struct ieee80211_tx_rate_control { 3072 struct ieee80211_hw *hw; 3073 struct ieee80211_supported_band *sband; 3074 struct ieee80211_bss_conf *bss_conf; 3075 struct sk_buff *skb; 3076 struct ieee80211_tx_rate reported_rate; 3077 bool rts, short_preamble; 3078 u8 max_rate_idx; 3079 u32 rate_idx_mask; 3080 bool bss; 3081}; 3082 3083struct rate_control_ops { 3084 struct module *module; 3085 const char *name; 3086 void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); 3087 void (*free)(void *priv); 3088 3089 void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); 3090 void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, 3091 struct ieee80211_sta *sta, void *priv_sta); 3092 void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, 3093 struct ieee80211_sta *sta, 3094 void *priv_sta, u32 changed, 3095 enum nl80211_channel_type oper_chan_type); 3096 void (*free_sta)(void *priv, struct ieee80211_sta *sta, 3097 void *priv_sta); 3098 3099 void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, 3100 struct ieee80211_sta *sta, void *priv_sta, 3101 struct sk_buff *skb); 3102 void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, 3103 struct ieee80211_tx_rate_control *txrc); 3104 3105 void (*add_sta_debugfs)(void *priv, void *priv_sta, 3106 struct dentry *dir); 3107 void (*remove_sta_debugfs)(void *priv, void *priv_sta); 3108}; 3109 3110static inline int rate_supported(struct ieee80211_sta *sta, 3111 enum ieee80211_band band, 3112 int index) 3113{ 3114 return (sta == NULL || sta->supp_rates[band] & BIT(index)); 3115} 3116 3117/** 3118 * rate_control_send_low - helper for drivers for management/no-ack frames 3119 * 3120 * Rate control algorithms that agree to use the lowest rate to 3121 * send management frames and NO_ACK data with the respective hw 3122 * retries should use this in the beginning of their mac80211 get_rate 3123 * callback. If true is returned the rate control can simply return. 3124 * If false is returned we guarantee that sta and sta and priv_sta is 3125 * not null. 3126 * 3127 * Rate control algorithms wishing to do more intelligent selection of 3128 * rate for multicast/broadcast frames may choose to not use this. 3129 * 3130 * @sta: &struct ieee80211_sta pointer to the target destination. Note 3131 * that this may be null. 3132 * @priv_sta: private rate control structure. This may be null. 3133 * @txrc: rate control information we sholud populate for mac80211. 3134 */ 3135bool rate_control_send_low(struct ieee80211_sta *sta, 3136 void *priv_sta, 3137 struct ieee80211_tx_rate_control *txrc); 3138 3139 3140static inline s8 3141rate_lowest_index(struct ieee80211_supported_band *sband, 3142 struct ieee80211_sta *sta) 3143{ 3144 int i; 3145 3146 for (i = 0; i < sband->n_bitrates; i++) 3147 if (rate_supported(sta, sband->band, i)) 3148 return i; 3149 3150 /* warn when we cannot find a rate. */ 3151 WARN_ON(1); 3152 3153 return 0; 3154} 3155 3156static inline 3157bool rate_usable_index_exists(struct ieee80211_supported_band *sband, 3158 struct ieee80211_sta *sta) 3159{ 3160 unsigned int i; 3161 3162 for (i = 0; i < sband->n_bitrates; i++) 3163 if (rate_supported(sta, sband->band, i)) 3164 return true; 3165 return false; 3166} 3167 3168int ieee80211_rate_control_register(struct rate_control_ops *ops); 3169void ieee80211_rate_control_unregister(struct rate_control_ops *ops); 3170 3171static inline bool 3172conf_is_ht20(struct ieee80211_conf *conf) 3173{ 3174 return conf->channel_type == NL80211_CHAN_HT20; 3175} 3176 3177static inline bool 3178conf_is_ht40_minus(struct ieee80211_conf *conf) 3179{ 3180 return conf->channel_type == NL80211_CHAN_HT40MINUS; 3181} 3182 3183static inline bool 3184conf_is_ht40_plus(struct ieee80211_conf *conf) 3185{ 3186 return conf->channel_type == NL80211_CHAN_HT40PLUS; 3187} 3188 3189static inline bool 3190conf_is_ht40(struct ieee80211_conf *conf) 3191{ 3192 return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); 3193} 3194 3195static inline bool 3196conf_is_ht(struct ieee80211_conf *conf) 3197{ 3198 return conf->channel_type != NL80211_CHAN_NO_HT; 3199} 3200 3201static inline enum nl80211_iftype 3202ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) 3203{ 3204 if (p2p) { 3205 switch (type) { 3206 case NL80211_IFTYPE_STATION: 3207 return NL80211_IFTYPE_P2P_CLIENT; 3208 case NL80211_IFTYPE_AP: 3209 return NL80211_IFTYPE_P2P_GO; 3210 default: 3211 break; 3212 } 3213 } 3214 return type; 3215} 3216 3217static inline enum nl80211_iftype 3218ieee80211_vif_type_p2p(struct ieee80211_vif *vif) 3219{ 3220 return ieee80211_iftype_p2p(vif->type, vif->p2p); 3221} 3222 3223#endif /* MAC80211_H */ 3224