2 * mac80211 <-> driver interface
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>
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.
16 #include <linux/kernel.h>
17 #include <linux/if_ether.h>
18 #include <linux/skbuff.h>
19 #include <linux/device.h>
20 #include <linux/ieee80211.h>
21 #include <net/cfg80211.h>
22 #include <asm/unaligned.h>
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
34 * DOC: Calling mac80211 from interrupts
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
43 * NOTE: If the driver opts to use the _irqsafe() functions, it may not also
44 * use the non-IRQ-safe functions!
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.
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
62 * There are, however, various exceptions to this rule for advanced features:
64 * The first exception is for hardware encryption and decryption offload
65 * where the IV/ICV may or may not be generated in hardware.
67 * Secondly, when the hardware handles fragmentation, the frame handed to
68 * the driver from mac80211 is the MSDU, not the MPDU.
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.
76 * DOC: mac80211 workqueue
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.
83 * mac80211 will flushed the workqueue upon interface removal and during
86 * All work performed on the mac80211 workqueue must not acquire the RTNL lock.
91 * enum ieee80211_max_queues - maximum number of queues
93 * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
95 enum ieee80211_max_queues
{
96 IEEE80211_MAX_QUEUES
= 4,
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
106 enum ieee80211_ac_numbers
{
112 #define IEEE80211_NUM_ACS 4
115 * struct ieee80211_tx_queue_params - transmit queue configuration
117 * The information provided in this structure is required for QoS
118 * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29.
120 * @aifs: arbitration interframe space [0..255]
121 * @cw_min: minimum contention window [a value of the form
122 * 2^n-1 in the range 1..32767]
123 * @cw_max: maximum contention window [like @cw_min]
124 * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled
125 * @uapsd: is U-APSD mode enabled for the queue
127 struct ieee80211_tx_queue_params
{
135 struct ieee80211_low_level_stats
{
136 unsigned int dot11ACKFailureCount
;
137 unsigned int dot11RTSFailureCount
;
138 unsigned int dot11FCSErrorCount
;
139 unsigned int dot11RTSSuccessCount
;
143 * enum ieee80211_bss_change - BSS change notification flags
145 * These flags are used with the bss_info_changed() callback
146 * to indicate which BSS parameter changed.
148 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated),
149 * also implies a change in the AID.
150 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed
151 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed
152 * @BSS_CHANGED_ERP_SLOT: slot timing changed
153 * @BSS_CHANGED_HT: 802.11n parameters changed
154 * @BSS_CHANGED_BASIC_RATES: Basic rateset changed
155 * @BSS_CHANGED_BEACON_INT: Beacon interval changed
156 * @BSS_CHANGED_BSSID: BSSID changed, for whatever
157 * reason (IBSS and managed mode)
158 * @BSS_CHANGED_BEACON: Beacon data changed, retrieve
159 * new beacon (beaconing modes)
160 * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be
161 * enabled/disabled (beaconing modes)
162 * @BSS_CHANGED_CQM: Connection quality monitor config changed
163 * @BSS_CHANGED_IBSS: IBSS join status changed
164 * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed.
165 * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note
166 * that it is only ever disabled for station mode.
167 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface.
168 * @BSS_CHANGED_SSID: SSID changed for this BSS (AP mode)
170 enum ieee80211_bss_change
{
171 BSS_CHANGED_ASSOC
= 1<<0,
172 BSS_CHANGED_ERP_CTS_PROT
= 1<<1,
173 BSS_CHANGED_ERP_PREAMBLE
= 1<<2,
174 BSS_CHANGED_ERP_SLOT
= 1<<3,
175 BSS_CHANGED_HT
= 1<<4,
176 BSS_CHANGED_BASIC_RATES
= 1<<5,
177 BSS_CHANGED_BEACON_INT
= 1<<6,
178 BSS_CHANGED_BSSID
= 1<<7,
179 BSS_CHANGED_BEACON
= 1<<8,
180 BSS_CHANGED_BEACON_ENABLED
= 1<<9,
181 BSS_CHANGED_CQM
= 1<<10,
182 BSS_CHANGED_IBSS
= 1<<11,
183 BSS_CHANGED_ARP_FILTER
= 1<<12,
184 BSS_CHANGED_QOS
= 1<<13,
185 BSS_CHANGED_IDLE
= 1<<14,
186 BSS_CHANGED_SSID
= 1<<15,
188 /* when adding here, make sure to change ieee80211_reconfig */
192 * The maximum number of IPv4 addresses listed for ARP filtering. If the number
193 * of addresses for an interface increase beyond this value, hardware ARP
194 * filtering will be disabled.
196 #define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4
199 * enum ieee80211_rssi_event - RSSI threshold event
200 * An indicator for when RSSI goes below/above a certain threshold.
201 * @RSSI_EVENT_HIGH: AP's rssi crossed the high threshold set by the driver.
202 * @RSSI_EVENT_LOW: AP's rssi crossed the low threshold set by the driver.
204 enum ieee80211_rssi_event
{
210 * struct ieee80211_bss_conf - holds the BSS's changing parameters
212 * This structure keeps information about a BSS (and an association
213 * to that BSS) that can change during the lifetime of the BSS.
215 * @assoc: association status
216 * @ibss_joined: indicates whether this station is part of an IBSS
218 * @aid: association ID number, valid only when @assoc is true
219 * @use_cts_prot: use CTS protection
220 * @use_short_preamble: use 802.11b short preamble;
221 * if the hardware cannot handle this it must set the
222 * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag
223 * @use_short_slot: use short slot time (only relevant for ERP);
224 * if the hardware cannot handle this it must set the
225 * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
226 * @dtim_period: num of beacons before the next DTIM, for beaconing,
227 * valid in station mode only while @assoc is true and if also
228 * requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf
230 * @timestamp: beacon timestamp
231 * @beacon_int: beacon interval
232 * @assoc_capability: capabilities taken from assoc resp
233 * @basic_rates: bitmap of basic rates, each bit stands for an
234 * index into the rate table configured by the driver in
236 * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
237 * @bssid: The BSSID for this BSS
238 * @enable_beacon: whether beaconing should be enabled or not
239 * @channel_type: Channel type for this BSS -- the hardware might be
240 * configured for HT40+ while this BSS only uses no-HT, for
242 * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info).
243 * This field is only valid when the channel type is one of the HT types.
244 * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
246 * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis
247 * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The
248 * may filter ARP queries targeted for other addresses than listed here.
249 * The driver must allow ARP queries targeted for all address listed here
250 * to pass through. An empty list implies no ARP queries need to pass.
251 * @arp_addr_cnt: Number of addresses currently on the list.
252 * @arp_filter_enabled: Enable ARP filtering - if enabled, the hardware may
253 * filter ARP queries based on the @arp_addr_list, if disabled, the
254 * hardware must not perform any ARP filtering. Note, that the filter will
255 * be enabled also in promiscuous mode.
256 * @qos: This is a QoS-enabled BSS.
257 * @idle: This interface is idle. There's also a global idle flag in the
258 * hardware config which may be more appropriate depending on what
259 * your driver/device needs to do.
260 * @ssid: The SSID of the current vif. Only valid in AP-mode.
261 * @ssid_len: Length of SSID given in @ssid.
262 * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
264 struct ieee80211_bss_conf
{
266 /* association related data */
267 bool assoc
, ibss_joined
;
269 /* erp related data */
271 bool use_short_preamble
;
276 u16 assoc_capability
;
279 int mcast_rate
[IEEE80211_NUM_BANDS
];
280 u16 ht_operation_mode
;
283 enum nl80211_channel_type channel_type
;
284 __be32 arp_addr_list
[IEEE80211_BSS_ARP_ADDR_LIST_LEN
];
286 bool arp_filter_enabled
;
289 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
295 * enum mac80211_tx_control_flags - flags to describe transmission information/status
297 * These flags are used with the @flags member of &ieee80211_tx_info.
299 * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame.
300 * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence
301 * number to this frame, taking care of not overwriting the fragment
302 * number and increasing the sequence number only when the
303 * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly
304 * assign sequence numbers to QoS-data frames but cannot do so correctly
305 * for non-QoS-data and management frames because beacons need them from
306 * that counter as well and mac80211 cannot guarantee proper sequencing.
307 * If this flag is set, the driver should instruct the hardware to
308 * assign a sequence number to the frame or assign one itself. Cf. IEEE
309 * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for
310 * beacons and always be clear for frames without a sequence number field.
311 * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack
312 * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination
314 * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame
315 * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon
316 * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU
317 * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211.
318 * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted
319 * because the destination STA was in powersave mode. Note that to
320 * avoid race conditions, the filter must be set by the hardware or
321 * firmware upon receiving a frame that indicates that the station
322 * went to sleep (must be done on device to filter frames already on
323 * the queue) and may only be unset after mac80211 gives the OK for
324 * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above),
325 * since only then is it guaranteed that no more frames are in the
327 * @IEEE80211_TX_STAT_ACK: Frame was acknowledged
328 * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status
329 * is for the whole aggregation.
330 * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned,
331 * so consider using block ack request (BAR).
332 * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be
333 * set by rate control algorithms to indicate probe rate, will
334 * be cleared for fragmented frames (except on the last fragment)
335 * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211,
336 * used to indicate that a pending frame requires TX processing before
337 * it can be sent out.
338 * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211,
339 * used to indicate that a frame was already retried due to PS
340 * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
341 * used to indicate frame should not be encrypted
342 * @IEEE80211_TX_CTL_POLL_RESPONSE: This frame is a response to a poll
343 * frame (PS-Poll or uAPSD) and should be sent although the station
344 * is in powersave mode.
345 * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the
346 * transmit function after the current frame, this can be used
347 * by drivers to kick the DMA queue only if unset or when the
349 * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted
350 * after TX status because the destination was asleep, it must not
351 * be modified again (no seqno assignment, crypto, etc.)
352 * @IEEE80211_TX_INTFL_HAS_RADIOTAP: This frame was injected and still
353 * has a radiotap header at skb->data.
354 * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211
355 * MLME command (internal to mac80211 to figure out whether to send TX
356 * status to user space)
357 * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame
358 * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this
359 * frame and selects the maximum number of streams that it can use.
360 * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on
361 * the off-channel channel when a remain-on-channel offload is done
362 * in hardware -- normal packets still flow and are expected to be
363 * handled properly by the device.
364 * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP
365 * testing. It will be sent out with incorrect Michael MIC key to allow
366 * TKIP countermeasures to be tested.
367 * @IEEE80211_TX_CTL_NO_CCK_RATE: This frame will be sent at non CCK rate.
368 * This flag is actually used for management frame especially for P2P
369 * frames not being sent at CCK rate in 2GHz band.
370 * @IEEE80211_TX_STATUS_EOSP: This packet marks the end of service period,
371 * when its status is reported the service period ends. For frames in
372 * an SP that mac80211 transmits, it is already set; for driver frames
373 * the driver may set this flag. It is also used to do the same for
376 * Note: If you have to add new flags to the enumeration, then don't
377 * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary.
379 enum mac80211_tx_control_flags
{
380 IEEE80211_TX_CTL_REQ_TX_STATUS
= BIT(0),
381 IEEE80211_TX_CTL_ASSIGN_SEQ
= BIT(1),
382 IEEE80211_TX_CTL_NO_ACK
= BIT(2),
383 IEEE80211_TX_CTL_CLEAR_PS_FILT
= BIT(3),
384 IEEE80211_TX_CTL_FIRST_FRAGMENT
= BIT(4),
385 IEEE80211_TX_CTL_SEND_AFTER_DTIM
= BIT(5),
386 IEEE80211_TX_CTL_AMPDU
= BIT(6),
387 IEEE80211_TX_CTL_INJECTED
= BIT(7),
388 IEEE80211_TX_STAT_TX_FILTERED
= BIT(8),
389 IEEE80211_TX_STAT_ACK
= BIT(9),
390 IEEE80211_TX_STAT_AMPDU
= BIT(10),
391 IEEE80211_TX_STAT_AMPDU_NO_BACK
= BIT(11),
392 IEEE80211_TX_CTL_RATE_CTRL_PROBE
= BIT(12),
393 IEEE80211_TX_INTFL_NEED_TXPROCESSING
= BIT(14),
394 IEEE80211_TX_INTFL_RETRIED
= BIT(15),
395 IEEE80211_TX_INTFL_DONT_ENCRYPT
= BIT(16),
396 IEEE80211_TX_CTL_POLL_RESPONSE
= BIT(17),
397 IEEE80211_TX_CTL_MORE_FRAMES
= BIT(18),
398 IEEE80211_TX_INTFL_RETRANSMISSION
= BIT(19),
399 IEEE80211_TX_INTFL_HAS_RADIOTAP
= BIT(20),
400 IEEE80211_TX_INTFL_NL80211_FRAME_TX
= BIT(21),
401 IEEE80211_TX_CTL_LDPC
= BIT(22),
402 IEEE80211_TX_CTL_STBC
= BIT(23) | BIT(24),
403 IEEE80211_TX_CTL_TX_OFFCHAN
= BIT(25),
404 IEEE80211_TX_INTFL_TKIP_MIC_FAILURE
= BIT(26),
405 IEEE80211_TX_CTL_NO_CCK_RATE
= BIT(27),
406 IEEE80211_TX_STATUS_EOSP
= BIT(28),
409 #define IEEE80211_TX_CTL_STBC_SHIFT 23
412 * This definition is used as a mask to clear all temporary flags, which are
413 * set by the tx handlers for each transmission attempt by the mac80211 stack.
415 #define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \
416 IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \
417 IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \
418 IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \
419 IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \
420 IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_POLL_RESPONSE | \
421 IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \
422 IEEE80211_TX_CTL_STBC | IEEE80211_TX_STATUS_EOSP)
425 * enum mac80211_rate_control_flags - per-rate flags set by the
426 * Rate Control algorithm.
428 * These flags are set by the Rate control algorithm for each rate during tx,
429 * in the @flags member of struct ieee80211_tx_rate.
431 * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate.
432 * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
433 * This is set if the current BSS requires ERP protection.
434 * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
435 * @IEEE80211_TX_RC_MCS: HT rate.
436 * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in
438 * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz.
439 * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the
440 * adjacent 20 MHz channels, if the current channel type is
441 * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
442 * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate.
444 enum mac80211_rate_control_flags
{
445 IEEE80211_TX_RC_USE_RTS_CTS
= BIT(0),
446 IEEE80211_TX_RC_USE_CTS_PROTECT
= BIT(1),
447 IEEE80211_TX_RC_USE_SHORT_PREAMBLE
= BIT(2),
449 /* rate index is an MCS rate number instead of an index */
450 IEEE80211_TX_RC_MCS
= BIT(3),
451 IEEE80211_TX_RC_GREEN_FIELD
= BIT(4),
452 IEEE80211_TX_RC_40_MHZ_WIDTH
= BIT(5),
453 IEEE80211_TX_RC_DUP_DATA
= BIT(6),
454 IEEE80211_TX_RC_SHORT_GI
= BIT(7),
458 /* there are 40 bytes if you don't need the rateset to be kept */
459 #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40
461 /* if you do need the rateset, then you have less space */
462 #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24
464 /* maximum number of rate stages */
465 #define IEEE80211_TX_MAX_RATES 5
468 * struct ieee80211_tx_rate - rate selection/status
470 * @idx: rate index to attempt to send with
471 * @flags: rate control flags (&enum mac80211_rate_control_flags)
472 * @count: number of tries in this rate before going to the next rate
474 * A value of -1 for @idx indicates an invalid rate and, if used
475 * in an array of retry rates, that no more rates should be tried.
477 * When used for transmit status reporting, the driver should
478 * always report the rate along with the flags it used.
480 * &struct ieee80211_tx_info contains an array of these structs
481 * in the control information, and it will be filled by the rate
482 * control algorithm according to what should be sent. For example,
483 * if this array contains, in the format { <idx>, <count> } the
485 * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 }
486 * then this means that the frame should be transmitted
487 * up to twice at rate 3, up to twice at rate 2, and up to four
488 * times at rate 1 if it doesn't get acknowledged. Say it gets
489 * acknowledged by the peer after the fifth attempt, the status
490 * information should then contain
491 * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ...
492 * since it was transmitted twice at rate 3, twice at rate 2
493 * and once at rate 1 after which we received an acknowledgement.
495 struct ieee80211_tx_rate
{
502 * struct ieee80211_tx_info - skb transmit information
504 * This structure is placed in skb->cb for three uses:
505 * (1) mac80211 TX control - mac80211 tells the driver what to do
506 * (2) driver internal use (if applicable)
507 * (3) TX status information - driver tells mac80211 what happened
509 * The TX control's sta pointer is only valid during the ->tx call,
512 * @flags: transmit info flags, defined above
513 * @band: the band to transmit on (use for checking for races)
514 * @antenna_sel_tx: antenna to use, 0 for automatic diversity
515 * @pad: padding, ignore
516 * @control: union for control data
517 * @status: union for status data
518 * @driver_data: array of driver_data pointers
519 * @ampdu_ack_len: number of acked aggregated frames.
520 * relevant only if IEEE80211_TX_STAT_AMPDU was set.
521 * @ampdu_len: number of aggregated frames.
522 * relevant only if IEEE80211_TX_STAT_AMPDU was set.
523 * @ack_signal: signal strength of the ACK frame
525 struct ieee80211_tx_info
{
526 /* common information */
540 struct ieee80211_tx_rate rates
[
541 IEEE80211_TX_MAX_RATES
];
544 /* only needed before rate control */
545 unsigned long jiffies
;
547 /* NB: vif can be NULL for injected frames */
548 struct ieee80211_vif
*vif
;
549 struct ieee80211_key_conf
*hw_key
;
550 struct ieee80211_sta
*sta
;
553 struct ieee80211_tx_rate rates
[IEEE80211_TX_MAX_RATES
];
560 struct ieee80211_tx_rate driver_rates
[
561 IEEE80211_TX_MAX_RATES
];
562 void *rate_driver_data
[
563 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE
/ sizeof(void *)];
566 IEEE80211_TX_INFO_DRIVER_DATA_SIZE
/ sizeof(void *)];
571 * struct ieee80211_sched_scan_ies - scheduled scan IEs
573 * This structure is used to pass the appropriate IEs to be used in scheduled
574 * scans for all bands. It contains both the IEs passed from the userspace
575 * and the ones generated by mac80211.
577 * @ie: array with the IEs for each supported band
578 * @len: array with the total length of the IEs for each band
580 struct ieee80211_sched_scan_ies
{
581 u8
*ie
[IEEE80211_NUM_BANDS
];
582 size_t len
[IEEE80211_NUM_BANDS
];
585 static inline struct ieee80211_tx_info
*IEEE80211_SKB_CB(struct sk_buff
*skb
)
587 return (struct ieee80211_tx_info
*)skb
->cb
;
590 static inline struct ieee80211_rx_status
*IEEE80211_SKB_RXCB(struct sk_buff
*skb
)
592 return (struct ieee80211_rx_status
*)skb
->cb
;
596 * ieee80211_tx_info_clear_status - clear TX status
598 * @info: The &struct ieee80211_tx_info to be cleared.
600 * When the driver passes an skb back to mac80211, it must report
601 * a number of things in TX status. This function clears everything
602 * in the TX status but the rate control information (it does clear
603 * the count since you need to fill that in anyway).
605 * NOTE: You can only use this function if you do NOT use
606 * info->driver_data! Use info->rate_driver_data
607 * instead if you need only the less space that allows.
610 ieee80211_tx_info_clear_status(struct ieee80211_tx_info
*info
)
614 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info
, status
.rates
) !=
615 offsetof(struct ieee80211_tx_info
, control
.rates
));
616 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info
, status
.rates
) !=
617 offsetof(struct ieee80211_tx_info
, driver_rates
));
618 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info
, status
.rates
) != 8);
619 /* clear the rate counts */
620 for (i
= 0; i
< IEEE80211_TX_MAX_RATES
; i
++)
621 info
->status
.rates
[i
].count
= 0;
624 offsetof(struct ieee80211_tx_info
, status
.ampdu_ack_len
) != 23);
625 memset(&info
->status
.ampdu_ack_len
, 0,
626 sizeof(struct ieee80211_tx_info
) -
627 offsetof(struct ieee80211_tx_info
, status
.ampdu_ack_len
));
632 * enum mac80211_rx_flags - receive flags
634 * These flags are used with the @flag member of &struct ieee80211_rx_status.
635 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame.
636 * Use together with %RX_FLAG_MMIC_STRIPPED.
637 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware.
638 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame,
639 * verification has been done by the hardware.
640 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame.
641 * If this flag is set, the stack cannot do any replay detection
642 * hence the driver or hardware will have to do that.
643 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on
645 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on
647 * @RX_FLAG_MACTIME_MPDU: The timestamp passed in the RX status (@mactime
648 * field) is valid and contains the time the first symbol of the MPDU
649 * was received. This is useful in monitor mode and for proper IBSS
651 * @RX_FLAG_SHORTPRE: Short preamble was used for this frame
652 * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index
653 * @RX_FLAG_40MHZ: HT40 (40 MHz) was used
654 * @RX_FLAG_SHORT_GI: Short guard interval was used
656 enum mac80211_rx_flags
{
657 RX_FLAG_MMIC_ERROR
= 1<<0,
658 RX_FLAG_DECRYPTED
= 1<<1,
659 RX_FLAG_MMIC_STRIPPED
= 1<<3,
660 RX_FLAG_IV_STRIPPED
= 1<<4,
661 RX_FLAG_FAILED_FCS_CRC
= 1<<5,
662 RX_FLAG_FAILED_PLCP_CRC
= 1<<6,
663 RX_FLAG_MACTIME_MPDU
= 1<<7,
664 RX_FLAG_SHORTPRE
= 1<<8,
666 RX_FLAG_40MHZ
= 1<<10,
667 RX_FLAG_SHORT_GI
= 1<<11,
671 * struct ieee80211_rx_status - receive status
673 * The low-level driver should provide this information (the subset
674 * supported by hardware) to the 802.11 code with each received
675 * frame, in the skb's control buffer (cb).
677 * @mactime: value in microseconds of the 64-bit Time Synchronization Function
678 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
679 * @band: the active band when this frame was received
680 * @freq: frequency the radio was tuned to when receiving this frame, in MHz
681 * @signal: signal strength when receiving this frame, either in dBm, in dB or
682 * unspecified depending on the hardware capabilities flags
683 * @IEEE80211_HW_SIGNAL_*
684 * @antenna: antenna used
685 * @rate_idx: index of data rate into band's supported rates or MCS index if
686 * HT rates are use (RX_FLAG_HT)
688 * @rx_flags: internal RX flags for mac80211
690 struct ieee80211_rx_status
{
692 enum ieee80211_band band
;
698 unsigned int rx_flags
;
702 * enum ieee80211_conf_flags - configuration flags
704 * Flags to define PHY configuration options
706 * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this
707 * to determine for example whether to calculate timestamps for packets
708 * or not, do not use instead of filter flags!
709 * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only).
710 * This is the power save mode defined by IEEE 802.11-2007 section 11.2,
711 * meaning that the hardware still wakes up for beacons, is able to
712 * transmit frames and receive the possible acknowledgment frames.
713 * Not to be confused with hardware specific wakeup/sleep states,
714 * driver is responsible for that. See the section "Powersave support"
716 * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set
717 * the driver should be prepared to handle configuration requests but
718 * may turn the device off as much as possible. Typically, this flag will
719 * be set when an interface is set UP but not associated or scanning, but
720 * it can also be unset in that case when monitor interfaces are active.
721 * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main
724 enum ieee80211_conf_flags
{
725 IEEE80211_CONF_MONITOR
= (1<<0),
726 IEEE80211_CONF_PS
= (1<<1),
727 IEEE80211_CONF_IDLE
= (1<<2),
728 IEEE80211_CONF_OFFCHANNEL
= (1<<3),
733 * enum ieee80211_conf_changed - denotes which configuration changed
735 * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed
736 * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed
737 * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed
738 * @IEEE80211_CONF_CHANGE_POWER: the TX power changed
739 * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed
740 * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed
741 * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed
742 * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed
744 enum ieee80211_conf_changed
{
745 IEEE80211_CONF_CHANGE_SMPS
= BIT(1),
746 IEEE80211_CONF_CHANGE_LISTEN_INTERVAL
= BIT(2),
747 IEEE80211_CONF_CHANGE_MONITOR
= BIT(3),
748 IEEE80211_CONF_CHANGE_PS
= BIT(4),
749 IEEE80211_CONF_CHANGE_POWER
= BIT(5),
750 IEEE80211_CONF_CHANGE_CHANNEL
= BIT(6),
751 IEEE80211_CONF_CHANGE_RETRY_LIMITS
= BIT(7),
752 IEEE80211_CONF_CHANGE_IDLE
= BIT(8),
756 * enum ieee80211_smps_mode - spatial multiplexing power save mode
758 * @IEEE80211_SMPS_AUTOMATIC: automatic
759 * @IEEE80211_SMPS_OFF: off
760 * @IEEE80211_SMPS_STATIC: static
761 * @IEEE80211_SMPS_DYNAMIC: dynamic
762 * @IEEE80211_SMPS_NUM_MODES: internal, don't use
764 enum ieee80211_smps_mode
{
765 IEEE80211_SMPS_AUTOMATIC
,
767 IEEE80211_SMPS_STATIC
,
768 IEEE80211_SMPS_DYNAMIC
,
771 IEEE80211_SMPS_NUM_MODES
,
775 * struct ieee80211_conf - configuration of the device
777 * This struct indicates how the driver shall configure the hardware.
779 * @flags: configuration flags defined above
781 * @listen_interval: listen interval in units of beacon interval
782 * @max_sleep_period: the maximum number of beacon intervals to sleep for
783 * before checking the beacon for a TIM bit (managed mode only); this
784 * value will be only achievable between DTIM frames, the hardware
785 * needs to check for the multicast traffic bit in DTIM beacons.
786 * This variable is valid only when the CONF_PS flag is set.
787 * @ps_dtim_period: The DTIM period of the AP we're connected to, for use
788 * in power saving. Power saving will not be enabled until a beacon
789 * has been received and the DTIM period is known.
790 * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the
791 * powersave documentation below. This variable is valid only when
792 * the CONF_PS flag is set.
794 * @power_level: requested transmit power (in dBm)
796 * @channel: the channel to tune to
797 * @channel_type: the channel (HT) type
799 * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame
800 * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11,
801 * but actually means the number of transmissions not the number of retries
802 * @short_frame_max_tx_count: Maximum number of transmissions for a "short"
803 * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the
804 * number of transmissions not the number of retries
806 * @smps_mode: spatial multiplexing powersave mode; note that
807 * %IEEE80211_SMPS_STATIC is used when the device is not
808 * configured for an HT channel
810 struct ieee80211_conf
{
812 int power_level
, dynamic_ps_timeout
;
813 int max_sleep_period
;
818 u8 long_frame_max_tx_count
, short_frame_max_tx_count
;
820 struct ieee80211_channel
*channel
;
821 enum nl80211_channel_type channel_type
;
822 enum ieee80211_smps_mode smps_mode
;
826 * struct ieee80211_channel_switch - holds the channel switch data
828 * The information provided in this structure is required for channel switch
831 * @timestamp: value in microseconds of the 64-bit Time Synchronization
832 * Function (TSF) timer when the frame containing the channel switch
833 * announcement was received. This is simply the rx.mactime parameter
834 * the driver passed into mac80211.
835 * @block_tx: Indicates whether transmission must be blocked before the
836 * scheduled channel switch, as indicated by the AP.
837 * @channel: the new channel to switch to
838 * @count: the number of TBTT's until the channel switch event
840 struct ieee80211_channel_switch
{
843 struct ieee80211_channel
*channel
;
848 * struct ieee80211_vif - per-interface data
850 * Data in this structure is continually present for driver
851 * use during the life of a virtual interface.
853 * @type: type of this virtual interface
854 * @bss_conf: BSS configuration for this interface, either our own
855 * or the BSS we're associated to
856 * @addr: address of this interface
857 * @p2p: indicates whether this AP or STA interface is a p2p
858 * interface, i.e. a GO or p2p-sta respectively
859 * @drv_priv: data area for driver use, will always be aligned to
862 struct ieee80211_vif
{
863 enum nl80211_iftype type
;
864 struct ieee80211_bss_conf bss_conf
;
868 u8 drv_priv
[0] __attribute__((__aligned__(sizeof(void *))));
871 static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif
*vif
)
873 #ifdef CONFIG_MAC80211_MESH
874 return vif
->type
== NL80211_IFTYPE_MESH_POINT
;
880 * enum ieee80211_key_flags - key flags
882 * These flags are used for communication about keys between the driver
883 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf.
885 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates
886 * that the STA this key will be used with could be using QoS.
887 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the
888 * driver to indicate that it requires IV generation for this
890 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by
891 * the driver for a TKIP key if it requires Michael MIC
892 * generation in software.
893 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates
894 * that the key is pairwise rather then a shared key.
895 * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a
896 * CCMP key if it requires CCMP encryption of management frames (MFP) to
897 * be done in software.
899 enum ieee80211_key_flags
{
900 IEEE80211_KEY_FLAG_WMM_STA
= 1<<0,
901 IEEE80211_KEY_FLAG_GENERATE_IV
= 1<<1,
902 IEEE80211_KEY_FLAG_GENERATE_MMIC
= 1<<2,
903 IEEE80211_KEY_FLAG_PAIRWISE
= 1<<3,
904 IEEE80211_KEY_FLAG_SW_MGMT
= 1<<4,
908 * struct ieee80211_key_conf - key information
910 * This key information is given by mac80211 to the driver by
911 * the set_key() callback in &struct ieee80211_ops.
913 * @hw_key_idx: To be set by the driver, this is the key index the driver
914 * wants to be given when a frame is transmitted and needs to be
915 * encrypted in hardware.
916 * @cipher: The key's cipher suite selector.
917 * @flags: key flags, see &enum ieee80211_key_flags.
918 * @keyidx: the key index (0-3)
919 * @keylen: key material length
920 * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte)
922 * - Temporal Encryption Key (128 bits)
923 * - Temporal Authenticator Tx MIC Key (64 bits)
924 * - Temporal Authenticator Rx MIC Key (64 bits)
925 * @icv_len: The ICV length for this key type
926 * @iv_len: The IV length for this key type
928 struct ieee80211_key_conf
{
940 * enum set_key_cmd - key command
942 * Used with the set_key() callback in &struct ieee80211_ops, this
943 * indicates whether a key is being removed or added.
945 * @SET_KEY: a key is set
946 * @DISABLE_KEY: a key must be disabled
949 SET_KEY
, DISABLE_KEY
,
953 * struct ieee80211_sta - station table entry
955 * A station table entry represents a station we are possibly
956 * communicating with. Since stations are RCU-managed in
957 * mac80211, any ieee80211_sta pointer you get access to must
958 * either be protected by rcu_read_lock() explicitly or implicitly,
959 * or you must take good care to not use such a pointer after a
960 * call to your sta_remove callback that removed it.
963 * @aid: AID we assigned to the station if we're an AP
964 * @supp_rates: Bitmap of supported rates (per band)
965 * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities
966 * @wme: indicates whether the STA supports WME. Only valid during AP-mode.
967 * @drv_priv: data area for driver use, will always be aligned to
968 * sizeof(void *), size is determined in hw information.
969 * @uapsd_queues: bitmap of queues configured for uapsd. Only valid
970 * if wme is supported.
971 * @max_sp: max Service Period. Only valid if wme is supported.
973 struct ieee80211_sta
{
974 u32 supp_rates
[IEEE80211_NUM_BANDS
];
977 struct ieee80211_sta_ht_cap ht_cap
;
983 u8 drv_priv
[0] __attribute__((__aligned__(sizeof(void *))));
987 * enum sta_notify_cmd - sta notify command
989 * Used with the sta_notify() callback in &struct ieee80211_ops, this
990 * indicates if an associated station made a power state transition.
992 * @STA_NOTIFY_SLEEP: a station is now sleeping
993 * @STA_NOTIFY_AWAKE: a sleeping station woke up
995 enum sta_notify_cmd
{
996 STA_NOTIFY_SLEEP
, STA_NOTIFY_AWAKE
,
1000 * enum ieee80211_hw_flags - hardware flags
1002 * These flags are used to indicate hardware capabilities to
1003 * the stack. Generally, flags here should have their meaning
1004 * done in a way that the simplest hardware doesn't need setting
1005 * any particular flags. There are some exceptions to this rule,
1006 * however, so you are advised to review these flags carefully.
1008 * @IEEE80211_HW_HAS_RATE_CONTROL:
1009 * The hardware or firmware includes rate control, and cannot be
1010 * controlled by the stack. As such, no rate control algorithm
1011 * should be instantiated, and the TX rate reported to userspace
1012 * will be taken from the TX status instead of the rate control
1014 * Note that this requires that the driver implement a number of
1015 * callbacks so it has the correct information, it needs to have
1016 * the @set_rts_threshold callback and must look at the BSS config
1017 * @use_cts_prot for G/N protection, @use_short_slot for slot
1018 * timing in 2.4 GHz and @use_short_preamble for preambles for
1021 * @IEEE80211_HW_RX_INCLUDES_FCS:
1022 * Indicates that received frames passed to the stack include
1023 * the FCS at the end.
1025 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING:
1026 * Some wireless LAN chipsets buffer broadcast/multicast frames
1027 * for power saving stations in the hardware/firmware and others
1028 * rely on the host system for such buffering. This option is used
1029 * to configure the IEEE 802.11 upper layer to buffer broadcast and
1030 * multicast frames when there are power saving stations so that
1031 * the driver can fetch them with ieee80211_get_buffered_bc().
1033 * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE:
1034 * Hardware is not capable of short slot operation on the 2.4 GHz band.
1036 * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE:
1037 * Hardware is not capable of receiving frames with short preamble on
1040 * @IEEE80211_HW_SIGNAL_UNSPEC:
1041 * Hardware can provide signal values but we don't know its units. We
1042 * expect values between 0 and @max_signal.
1043 * If possible please provide dB or dBm instead.
1045 * @IEEE80211_HW_SIGNAL_DBM:
1046 * Hardware gives signal values in dBm, decibel difference from
1047 * one milliwatt. This is the preferred method since it is standardized
1048 * between different devices. @max_signal does not need to be set.
1050 * @IEEE80211_HW_SPECTRUM_MGMT:
1051 * Hardware supports spectrum management defined in 802.11h
1052 * Measurement, Channel Switch, Quieting, TPC
1054 * @IEEE80211_HW_AMPDU_AGGREGATION:
1055 * Hardware supports 11n A-MPDU aggregation.
1057 * @IEEE80211_HW_SUPPORTS_PS:
1058 * Hardware has power save support (i.e. can go to sleep).
1060 * @IEEE80211_HW_PS_NULLFUNC_STACK:
1061 * Hardware requires nullfunc frame handling in stack, implies
1062 * stack support for dynamic PS.
1064 * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS:
1065 * Hardware has support for dynamic PS.
1067 * @IEEE80211_HW_MFP_CAPABLE:
1068 * Hardware supports management frame protection (MFP, IEEE 802.11w).
1070 * @IEEE80211_HW_BEACON_FILTER:
1071 * Hardware supports dropping of irrelevant beacon frames to
1072 * avoid waking up cpu.
1074 * @IEEE80211_HW_SUPPORTS_STATIC_SMPS:
1075 * Hardware supports static spatial multiplexing powersave,
1076 * ie. can turn off all but one chain even on HT connections
1077 * that should be using more chains.
1079 * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS:
1080 * Hardware supports dynamic spatial multiplexing powersave,
1081 * ie. can turn off all but one chain and then wake the rest
1082 * up as required after, for example, rts/cts handshake.
1084 * @IEEE80211_HW_SUPPORTS_UAPSD:
1085 * Hardware supports Unscheduled Automatic Power Save Delivery
1086 * (U-APSD) in managed mode. The mode is configured with
1087 * conf_tx() operation.
1089 * @IEEE80211_HW_REPORTS_TX_ACK_STATUS:
1090 * Hardware can provide ack status reports of Tx frames to
1093 * @IEEE80211_HW_CONNECTION_MONITOR:
1094 * The hardware performs its own connection monitoring, including
1095 * periodic keep-alives to the AP and probing the AP on beacon loss.
1096 * When this flag is set, signaling beacon-loss will cause an immediate
1097 * change to disassociated state.
1099 * @IEEE80211_HW_SUPPORTS_CQM_RSSI:
1100 * Hardware can do connection quality monitoring - i.e. it can monitor
1101 * connection quality related parameters, such as the RSSI level and
1102 * provide notifications if configured trigger levels are reached.
1104 * @IEEE80211_HW_NEED_DTIM_PERIOD:
1105 * This device needs to know the DTIM period for the BSS before
1108 * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports
1109 * per-station GTKs as used by IBSS RSN or during fast transition. If
1110 * the device doesn't support per-station GTKs, but can be asked not
1111 * to decrypt group addressed frames, then IBSS RSN support is still
1112 * possible but software crypto will be used. Advertise the wiphy flag
1113 * only in that case.
1115 * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device
1116 * autonomously manages the PS status of connected stations. When
1117 * this flag is set mac80211 will not trigger PS mode for connected
1118 * stations based on the PM bit of incoming frames.
1119 * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure
1120 * the PS mode of connected stations.
1122 * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session
1123 * setup strictly in HW. mac80211 should not attempt to do this in
1126 enum ieee80211_hw_flags
{
1127 IEEE80211_HW_HAS_RATE_CONTROL
= 1<<0,
1128 IEEE80211_HW_RX_INCLUDES_FCS
= 1<<1,
1129 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING
= 1<<2,
1130 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
= 1<<3,
1131 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE
= 1<<4,
1132 IEEE80211_HW_SIGNAL_UNSPEC
= 1<<5,
1133 IEEE80211_HW_SIGNAL_DBM
= 1<<6,
1134 IEEE80211_HW_NEED_DTIM_PERIOD
= 1<<7,
1135 IEEE80211_HW_SPECTRUM_MGMT
= 1<<8,
1136 IEEE80211_HW_AMPDU_AGGREGATION
= 1<<9,
1137 IEEE80211_HW_SUPPORTS_PS
= 1<<10,
1138 IEEE80211_HW_PS_NULLFUNC_STACK
= 1<<11,
1139 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
= 1<<12,
1140 IEEE80211_HW_MFP_CAPABLE
= 1<<13,
1141 IEEE80211_HW_BEACON_FILTER
= 1<<14,
1142 IEEE80211_HW_SUPPORTS_STATIC_SMPS
= 1<<15,
1143 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
= 1<<16,
1144 IEEE80211_HW_SUPPORTS_UAPSD
= 1<<17,
1145 IEEE80211_HW_REPORTS_TX_ACK_STATUS
= 1<<18,
1146 IEEE80211_HW_CONNECTION_MONITOR
= 1<<19,
1147 IEEE80211_HW_SUPPORTS_CQM_RSSI
= 1<<20,
1148 IEEE80211_HW_SUPPORTS_PER_STA_GTK
= 1<<21,
1149 IEEE80211_HW_AP_LINK_PS
= 1<<22,
1150 IEEE80211_HW_TX_AMPDU_SETUP_IN_HW
= 1<<23,
1154 * struct ieee80211_hw - hardware information and state
1156 * This structure contains the configuration and hardware
1157 * information for an 802.11 PHY.
1159 * @wiphy: This points to the &struct wiphy allocated for this
1160 * 802.11 PHY. You must fill in the @perm_addr and @dev
1161 * members of this structure using SET_IEEE80211_DEV()
1162 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported
1163 * bands (with channels, bitrates) are registered here.
1165 * @conf: &struct ieee80211_conf, device configuration, don't use.
1167 * @priv: pointer to private area that was allocated for driver use
1168 * along with this structure.
1170 * @flags: hardware flags, see &enum ieee80211_hw_flags.
1172 * @extra_tx_headroom: headroom to reserve in each transmit skb
1173 * for use by the driver (e.g. for transmit headers.)
1175 * @channel_change_time: time (in microseconds) it takes to change channels.
1177 * @max_signal: Maximum value for signal (rssi) in RX information, used
1178 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB
1180 * @max_listen_interval: max listen interval in units of beacon interval
1183 * @queues: number of available hardware transmit queues for
1184 * data packets. WMM/QoS requires at least four, these
1185 * queues need to have configurable access parameters.
1187 * @rate_control_algorithm: rate control algorithm for this hardware.
1188 * If unset (NULL), the default algorithm will be used. Must be
1189 * set before calling ieee80211_register_hw().
1191 * @vif_data_size: size (in bytes) of the drv_priv data area
1192 * within &struct ieee80211_vif.
1193 * @sta_data_size: size (in bytes) of the drv_priv data area
1194 * within &struct ieee80211_sta.
1196 * @max_rates: maximum number of alternate rate retry stages the hw
1198 * @max_report_rates: maximum number of alternate rate retry stages
1199 * the hw can report back.
1200 * @max_rate_tries: maximum number of tries for each stage
1202 * @napi_weight: weight used for NAPI polling. You must specify an
1203 * appropriate value here if a napi_poll operation is provided
1206 * @max_rx_aggregation_subframes: maximum buffer size (number of
1207 * sub-frames) to be used for A-MPDU block ack receiver
1209 * This is only relevant if the device has restrictions on the
1210 * number of subframes, if it relies on mac80211 to do reordering
1211 * it shouldn't be set.
1213 * @max_tx_aggregation_subframes: maximum number of subframes in an
1214 * aggregate an HT driver will transmit, used by the peer as a
1215 * hint to size its reorder buffer.
1217 struct ieee80211_hw
{
1218 struct ieee80211_conf conf
;
1219 struct wiphy
*wiphy
;
1220 const char *rate_control_algorithm
;
1223 unsigned int extra_tx_headroom
;
1224 int channel_change_time
;
1229 u16 max_listen_interval
;
1232 u8 max_report_rates
;
1234 u8 max_rx_aggregation_subframes
;
1235 u8 max_tx_aggregation_subframes
;
1239 * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy
1241 * @wiphy: the &struct wiphy which we want to query
1243 * mac80211 drivers can use this to get to their respective
1244 * &struct ieee80211_hw. Drivers wishing to get to their own private
1245 * structure can then access it via hw->priv. Note that mac802111 drivers should
1246 * not use wiphy_priv() to try to get their private driver structure as this
1247 * is already used internally by mac80211.
1249 struct ieee80211_hw
*wiphy_to_ieee80211_hw(struct wiphy
*wiphy
);
1252 * SET_IEEE80211_DEV - set device for 802.11 hardware
1254 * @hw: the &struct ieee80211_hw to set the device for
1255 * @dev: the &struct device of this 802.11 device
1257 static inline void SET_IEEE80211_DEV(struct ieee80211_hw
*hw
, struct device
*dev
)
1259 set_wiphy_dev(hw
->wiphy
, dev
);
1263 * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware
1265 * @hw: the &struct ieee80211_hw to set the MAC address for
1266 * @addr: the address to set
1268 static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw
*hw
, u8
*addr
)
1270 memcpy(hw
->wiphy
->perm_addr
, addr
, ETH_ALEN
);
1273 static inline struct ieee80211_rate
*
1274 ieee80211_get_tx_rate(const struct ieee80211_hw
*hw
,
1275 const struct ieee80211_tx_info
*c
)
1277 if (WARN_ON(c
->control
.rates
[0].idx
< 0))
1279 return &hw
->wiphy
->bands
[c
->band
]->bitrates
[c
->control
.rates
[0].idx
];
1282 static inline struct ieee80211_rate
*
1283 ieee80211_get_rts_cts_rate(const struct ieee80211_hw
*hw
,
1284 const struct ieee80211_tx_info
*c
)
1286 if (c
->control
.rts_cts_rate_idx
< 0)
1288 return &hw
->wiphy
->bands
[c
->band
]->bitrates
[c
->control
.rts_cts_rate_idx
];
1291 static inline struct ieee80211_rate
*
1292 ieee80211_get_alt_retry_rate(const struct ieee80211_hw
*hw
,
1293 const struct ieee80211_tx_info
*c
, int idx
)
1295 if (c
->control
.rates
[idx
+ 1].idx
< 0)
1297 return &hw
->wiphy
->bands
[c
->band
]->bitrates
[c
->control
.rates
[idx
+ 1].idx
];
1301 * DOC: Hardware crypto acceleration
1303 * mac80211 is capable of taking advantage of many hardware
1304 * acceleration designs for encryption and decryption operations.
1306 * The set_key() callback in the &struct ieee80211_ops for a given
1307 * device is called to enable hardware acceleration of encryption and
1308 * decryption. The callback takes a @sta parameter that will be NULL
1309 * for default keys or keys used for transmission only, or point to
1310 * the station information for the peer for individual keys.
1311 * Multiple transmission keys with the same key index may be used when
1312 * VLANs are configured for an access point.
1314 * When transmitting, the TX control data will use the @hw_key_idx
1315 * selected by the driver by modifying the &struct ieee80211_key_conf
1316 * pointed to by the @key parameter to the set_key() function.
1318 * The set_key() call for the %SET_KEY command should return 0 if
1319 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be
1320 * added; if you return 0 then hw_key_idx must be assigned to the
1321 * hardware key index, you are free to use the full u8 range.
1323 * When the cmd is %DISABLE_KEY then it must succeed.
1325 * Note that it is permissible to not decrypt a frame even if a key
1326 * for it has been uploaded to hardware, the stack will not make any
1327 * decision based on whether a key has been uploaded or not but rather
1328 * based on the receive flags.
1330 * The &struct ieee80211_key_conf structure pointed to by the @key
1331 * parameter is guaranteed to be valid until another call to set_key()
1332 * removes it, but it can only be used as a cookie to differentiate
1335 * In TKIP some HW need to be provided a phase 1 key, for RX decryption
1336 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key
1338 * The update_tkip_key() call updates the driver with the new phase 1 key.
1339 * This happens every time the iv16 wraps around (every 65536 packets). The
1340 * set_key() call will happen only once for each key (unless the AP did
1341 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is
1342 * provided by update_tkip_key only. The trigger that makes mac80211 call this
1343 * handler is software decryption with wrap around of iv16.
1347 * DOC: Powersave support
1349 * mac80211 has support for various powersave implementations.
1351 * First, it can support hardware that handles all powersaving by itself,
1352 * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware
1353 * flag. In that case, it will be told about the desired powersave mode
1354 * with the %IEEE80211_CONF_PS flag depending on the association status.
1355 * The hardware must take care of sending nullfunc frames when necessary,
1356 * i.e. when entering and leaving powersave mode. The hardware is required
1357 * to look at the AID in beacons and signal to the AP that it woke up when
1358 * it finds traffic directed to it.
1360 * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in
1361 * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused
1362 * with hardware wakeup and sleep states. Driver is responsible for waking
1363 * up the hardware before issuing commands to the hardware and putting it
1364 * back to sleep at appropriate times.
1366 * When PS is enabled, hardware needs to wakeup for beacons and receive the
1367 * buffered multicast/broadcast frames after the beacon. Also it must be
1368 * possible to send frames and receive the acknowledment frame.
1370 * Other hardware designs cannot send nullfunc frames by themselves and also
1371 * need software support for parsing the TIM bitmap. This is also supported
1372 * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and
1373 * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still
1374 * required to pass up beacons. The hardware is still required to handle
1375 * waking up for multicast traffic; if it cannot the driver must handle that
1376 * as best as it can, mac80211 is too slow to do that.
1378 * Dynamic powersave is an extension to normal powersave in which the
1379 * hardware stays awake for a user-specified period of time after sending a
1380 * frame so that reply frames need not be buffered and therefore delayed to
1381 * the next wakeup. It's compromise of getting good enough latency when
1382 * there's data traffic and still saving significantly power in idle
1385 * Dynamic powersave is simply supported by mac80211 enabling and disabling
1386 * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS
1387 * flag and mac80211 will handle everything automatically. Additionally,
1388 * hardware having support for the dynamic PS feature may set the
1389 * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support
1390 * dynamic PS mode itself. The driver needs to look at the
1391 * @dynamic_ps_timeout hardware configuration value and use it that value
1392 * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable
1393 * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS
1394 * enabled whenever user has enabled powersave.
1396 * Some hardware need to toggle a single shared antenna between WLAN and
1397 * Bluetooth to facilitate co-existence. These types of hardware set
1398 * limitations on the use of host controlled dynamic powersave whenever there
1399 * is simultaneous WLAN and Bluetooth traffic. For these types of hardware, the
1400 * driver may request temporarily going into full power save, in order to
1401 * enable toggling the antenna between BT and WLAN. If the driver requests
1402 * disabling dynamic powersave, the @dynamic_ps_timeout value will be
1403 * temporarily set to zero until the driver re-enables dynamic powersave.
1405 * Driver informs U-APSD client support by enabling
1406 * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the
1407 * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS
1408 * Nullfunc frames and stay awake until the service period has ended. To
1409 * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames
1410 * from that AC are transmitted with powersave enabled.
1412 * Note: U-APSD client mode is not yet supported with
1413 * %IEEE80211_HW_PS_NULLFUNC_STACK.
1417 * DOC: Beacon filter support
1419 * Some hardware have beacon filter support to reduce host cpu wakeups
1420 * which will reduce system power consumption. It usuallly works so that
1421 * the firmware creates a checksum of the beacon but omits all constantly
1422 * changing elements (TSF, TIM etc). Whenever the checksum changes the
1423 * beacon is forwarded to the host, otherwise it will be just dropped. That
1424 * way the host will only receive beacons where some relevant information
1425 * (for example ERP protection or WMM settings) have changed.
1427 * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER
1428 * hardware capability. The driver needs to enable beacon filter support
1429 * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When
1430 * power save is enabled, the stack will not check for beacon loss and the
1431 * driver needs to notify about loss of beacons with ieee80211_beacon_loss().
1433 * The time (or number of beacons missed) until the firmware notifies the
1434 * driver of a beacon loss event (which in turn causes the driver to call
1435 * ieee80211_beacon_loss()) should be configurable and will be controlled
1436 * by mac80211 and the roaming algorithm in the future.
1438 * Since there may be constantly changing information elements that nothing
1439 * in the software stack cares about, we will, in the future, have mac80211
1440 * tell the driver which information elements are interesting in the sense
1441 * that we want to see changes in them. This will include
1442 * - a list of information element IDs
1443 * - a list of OUIs for the vendor information element
1445 * Ideally, the hardware would filter out any beacons without changes in the
1446 * requested elements, but if it cannot support that it may, at the expense
1447 * of some efficiency, filter out only a subset. For example, if the device
1448 * doesn't support checking for OUIs it should pass up all changes in all
1449 * vendor information elements.
1451 * Note that change, for the sake of simplification, also includes information
1452 * elements appearing or disappearing from the beacon.
1454 * Some hardware supports an "ignore list" instead, just make sure nothing
1455 * that was requested is on the ignore list, and include commonly changing
1456 * information element IDs in the ignore list, for example 11 (BSS load) and
1457 * the various vendor-assigned IEs with unknown contents (128, 129, 133-136,
1458 * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility
1459 * it could also include some currently unused IDs.
1462 * In addition to these capabilities, hardware should support notifying the
1463 * host of changes in the beacon RSSI. This is relevant to implement roaming
1464 * when no traffic is flowing (when traffic is flowing we see the RSSI of
1465 * the received data packets). This can consist in notifying the host when
1466 * the RSSI changes significantly or when it drops below or rises above
1467 * configurable thresholds. In the future these thresholds will also be
1468 * configured by mac80211 (which gets them from userspace) to implement
1469 * them as the roaming algorithm requires.
1471 * If the hardware cannot implement this, the driver should ask it to
1472 * periodically pass beacon frames to the host so that software can do the
1473 * signal strength threshold checking.
1477 * DOC: Spatial multiplexing power save
1479 * SMPS (Spatial multiplexing power save) is a mechanism to conserve
1480 * power in an 802.11n implementation. For details on the mechanism
1481 * and rationale, please refer to 802.11 (as amended by 802.11n-2009)
1482 * "11.2.3 SM power save".
1484 * The mac80211 implementation is capable of sending action frames
1485 * to update the AP about the station's SMPS mode, and will instruct
1486 * the driver to enter the specific mode. It will also announce the
1487 * requested SMPS mode during the association handshake. Hardware
1488 * support for this feature is required, and can be indicated by
1491 * The default mode will be "automatic", which nl80211/cfg80211
1492 * defines to be dynamic SMPS in (regular) powersave, and SMPS
1493 * turned off otherwise.
1495 * To support this feature, the driver must set the appropriate
1496 * hardware support flags, and handle the SMPS flag to the config()
1497 * operation. It will then with this mechanism be instructed to
1498 * enter the requested SMPS mode while associated to an HT AP.
1502 * DOC: Frame filtering
1504 * mac80211 requires to see many management frames for proper
1505 * operation, and users may want to see many more frames when
1506 * in monitor mode. However, for best CPU usage and power consumption,
1507 * having as few frames as possible percolate through the stack is
1508 * desirable. Hence, the hardware should filter as much as possible.
1510 * To achieve this, mac80211 uses filter flags (see below) to tell
1511 * the driver's configure_filter() function which frames should be
1512 * passed to mac80211 and which should be filtered out.
1514 * Before configure_filter() is invoked, the prepare_multicast()
1515 * callback is invoked with the parameters @mc_count and @mc_list
1516 * for the combined multicast address list of all virtual interfaces.
1517 * It's use is optional, and it returns a u64 that is passed to
1518 * configure_filter(). Additionally, configure_filter() has the
1519 * arguments @changed_flags telling which flags were changed and
1520 * @total_flags with the new flag states.
1522 * If your device has no multicast address filters your driver will
1523 * need to check both the %FIF_ALLMULTI flag and the @mc_count
1524 * parameter to see whether multicast frames should be accepted
1527 * All unsupported flags in @total_flags must be cleared.
1528 * Hardware does not support a flag if it is incapable of _passing_
1529 * the frame to the stack. Otherwise the driver must ignore
1530 * the flag, but not clear it.
1531 * You must _only_ clear the flag (announce no support for the
1532 * flag to mac80211) if you are not able to pass the packet type
1533 * to the stack (so the hardware always filters it).
1534 * So for example, you should clear @FIF_CONTROL, if your hardware
1535 * always filters control frames. If your hardware always passes
1536 * control frames to the kernel and is incapable of filtering them,
1537 * you do _not_ clear the @FIF_CONTROL flag.
1538 * This rule applies to all other FIF flags as well.
1542 * enum ieee80211_filter_flags - hardware filter flags
1544 * These flags determine what the filter in hardware should be
1545 * programmed to let through and what should not be passed to the
1546 * stack. It is always safe to pass more frames than requested,
1547 * but this has negative impact on power consumption.
1549 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS,
1550 * think of the BSS as your network segment and then this corresponds
1551 * to the regular ethernet device promiscuous mode.
1553 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested
1554 * by the user or if the hardware is not capable of filtering by
1555 * multicast address.
1557 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the
1558 * %RX_FLAG_FAILED_FCS_CRC for them)
1560 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set
1561 * the %RX_FLAG_FAILED_PLCP_CRC for them
1563 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate
1564 * to the hardware that it should not filter beacons or probe responses
1565 * by BSSID. Filtering them can greatly reduce the amount of processing
1566 * mac80211 needs to do and the amount of CPU wakeups, so you should
1567 * honour this flag if possible.
1569 * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS
1570 * is not set then only those addressed to this station.
1572 * @FIF_OTHER_BSS: pass frames destined to other BSSes
1574 * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only
1575 * those addressed to this station.
1577 * @FIF_PROBE_REQ: pass probe request frames
1579 enum ieee80211_filter_flags
{
1580 FIF_PROMISC_IN_BSS
= 1<<0,
1581 FIF_ALLMULTI
= 1<<1,
1583 FIF_PLCPFAIL
= 1<<3,
1584 FIF_BCN_PRBRESP_PROMISC
= 1<<4,
1586 FIF_OTHER_BSS
= 1<<6,
1588 FIF_PROBE_REQ
= 1<<8,
1592 * enum ieee80211_ampdu_mlme_action - A-MPDU actions
1594 * These flags are used with the ampdu_action() callback in
1595 * &struct ieee80211_ops to indicate which action is needed.
1597 * Note that drivers MUST be able to deal with a TX aggregation
1598 * session being stopped even before they OK'ed starting it by
1599 * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer
1600 * might receive the addBA frame and send a delBA right away!
1602 * @IEEE80211_AMPDU_RX_START: start Rx aggregation
1603 * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation
1604 * @IEEE80211_AMPDU_TX_START: start Tx aggregation
1605 * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation
1606 * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational
1608 enum ieee80211_ampdu_mlme_action
{
1609 IEEE80211_AMPDU_RX_START
,
1610 IEEE80211_AMPDU_RX_STOP
,
1611 IEEE80211_AMPDU_TX_START
,
1612 IEEE80211_AMPDU_TX_STOP
,
1613 IEEE80211_AMPDU_TX_OPERATIONAL
,
1617 * enum ieee80211_tx_sync_type - TX sync type
1618 * @IEEE80211_TX_SYNC_AUTH: sync TX for authentication
1619 * (and possibly also before direct probe)
1620 * @IEEE80211_TX_SYNC_ASSOC: sync TX for association
1621 * @IEEE80211_TX_SYNC_ACTION: sync TX for action frame
1622 * (not implemented yet)
1624 enum ieee80211_tx_sync_type
{
1625 IEEE80211_TX_SYNC_AUTH
,
1626 IEEE80211_TX_SYNC_ASSOC
,
1627 IEEE80211_TX_SYNC_ACTION
,
1631 * enum ieee80211_frame_release_type - frame release reason
1632 * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll
1633 * @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to
1634 * frame received on trigger-enabled AC
1636 enum ieee80211_frame_release_type
{
1637 IEEE80211_FRAME_RELEASE_PSPOLL
,
1638 IEEE80211_FRAME_RELEASE_UAPSD
,
1642 * struct ieee80211_ops - callbacks from mac80211 to the driver
1644 * This structure contains various callbacks that the driver may
1645 * handle or, in some cases, must handle, for example to configure
1646 * the hardware to a new channel or to transmit a frame.
1648 * @tx: Handler that 802.11 module calls for each transmitted frame.
1649 * skb contains the buffer starting from the IEEE 802.11 header.
1650 * The low-level driver should send the frame out based on
1651 * configuration in the TX control data. This handler should,
1652 * preferably, never fail and stop queues appropriately, more
1653 * importantly, however, it must never fail for A-MPDU-queues.
1654 * This function should return NETDEV_TX_OK except in very
1656 * Must be implemented and atomic.
1658 * @start: Called before the first netdevice attached to the hardware
1659 * is enabled. This should turn on the hardware and must turn on
1660 * frame reception (for possibly enabled monitor interfaces.)
1661 * Returns negative error codes, these may be seen in userspace,
1663 * When the device is started it should not have a MAC address
1664 * to avoid acknowledging frames before a non-monitor device
1666 * Must be implemented and can sleep.
1668 * @stop: Called after last netdevice attached to the hardware
1669 * is disabled. This should turn off the hardware (at least
1670 * it must turn off frame reception.)
1671 * May be called right after add_interface if that rejects
1672 * an interface. If you added any work onto the mac80211 workqueue
1673 * you should ensure to cancel it on this callback.
1674 * Must be implemented and can sleep.
1676 * @suspend: Suspend the device; mac80211 itself will quiesce before and
1677 * stop transmitting and doing any other configuration, and then
1678 * ask the device to suspend. This is only invoked when WoWLAN is
1679 * configured, otherwise the device is deconfigured completely and
1680 * reconfigured at resume time.
1681 * The driver may also impose special conditions under which it
1682 * wants to use the "normal" suspend (deconfigure), say if it only
1683 * supports WoWLAN when the device is associated. In this case, it
1684 * must return 1 from this function.
1686 * @resume: If WoWLAN was configured, this indicates that mac80211 is
1687 * now resuming its operation, after this the device must be fully
1688 * functional again. If this returns an error, the only way out is
1689 * to also unregister the device. If it returns 1, then mac80211
1690 * will also go through the regular complete restart on resume.
1692 * @add_interface: Called when a netdevice attached to the hardware is
1693 * enabled. Because it is not called for monitor mode devices, @start
1694 * and @stop must be implemented.
1695 * The driver should perform any initialization it needs before
1696 * the device can be enabled. The initial configuration for the
1697 * interface is given in the conf parameter.
1698 * The callback may refuse to add an interface by returning a
1699 * negative error code (which will be seen in userspace.)
1700 * Must be implemented and can sleep.
1702 * @change_interface: Called when a netdevice changes type. This callback
1703 * is optional, but only if it is supported can interface types be
1704 * switched while the interface is UP. The callback may sleep.
1705 * Note that while an interface is being switched, it will not be
1706 * found by the interface iteration callbacks.
1708 * @remove_interface: Notifies a driver that an interface is going down.
1709 * The @stop callback is called after this if it is the last interface
1710 * and no monitor interfaces are present.
1711 * When all interfaces are removed, the MAC address in the hardware
1712 * must be cleared so the device no longer acknowledges packets,
1713 * the mac_addr member of the conf structure is, however, set to the
1714 * MAC address of the device going away.
1715 * Hence, this callback must be implemented. It can sleep.
1717 * @config: Handler for configuration requests. IEEE 802.11 code calls this
1718 * function to change hardware configuration, e.g., channel.
1719 * This function should never fail but returns a negative error code
1720 * if it does. The callback can sleep.
1722 * @bss_info_changed: Handler for configuration requests related to BSS
1723 * parameters that may vary during BSS's lifespan, and may affect low
1724 * level driver (e.g. assoc/disassoc status, erp parameters).
1725 * This function should not be used if no BSS has been set, unless
1726 * for association indication. The @changed parameter indicates which
1727 * of the bss parameters has changed when a call is made. The callback
1730 * @tx_sync: Called before a frame is sent to an AP/GO. In the GO case, the
1731 * driver should sync with the GO's powersaving so the device doesn't
1732 * transmit the frame while the GO is asleep. In the regular AP case
1733 * it may be used by drivers for devices implementing other restrictions
1734 * on talking to APs, e.g. due to regulatory enforcement or just HW
1736 * This function is called for every authentication, association and
1737 * action frame separately since applications might attempt to auth
1738 * with multiple APs before chosing one to associate to. If it returns
1739 * an error, the corresponding authentication, association or frame
1740 * transmission is aborted and reported as having failed. It is always
1741 * called after tuning to the correct channel.
1742 * The callback might be called multiple times before @finish_tx_sync
1743 * (but @finish_tx_sync will be called once for each) but in practice
1744 * this is unlikely to happen. It can also refuse in that case if the
1745 * driver cannot handle that situation.
1746 * This callback can sleep.
1747 * @finish_tx_sync: Called as a counterpart to @tx_sync, unless that returned
1748 * an error. This callback can sleep.
1750 * @prepare_multicast: Prepare for multicast filter configuration.
1751 * This callback is optional, and its return value is passed
1752 * to configure_filter(). This callback must be atomic.
1754 * @configure_filter: Configure the device's RX filter.
1755 * See the section "Frame filtering" for more information.
1756 * This callback must be implemented and can sleep.
1758 * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit
1759 * must be set or cleared for a given STA. Must be atomic.
1761 * @set_key: See the section "Hardware crypto acceleration"
1762 * This callback is only called between add_interface and
1763 * remove_interface calls, i.e. while the given virtual interface
1765 * Returns a negative error code if the key can't be added.
1766 * The callback can sleep.
1768 * @update_tkip_key: See the section "Hardware crypto acceleration"
1769 * This callback will be called in the context of Rx. Called for drivers
1770 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY.
1771 * The callback must be atomic.
1773 * @set_rekey_data: If the device supports GTK rekeying, for example while the
1774 * host is suspended, it can assign this callback to retrieve the data
1775 * necessary to do GTK rekeying, this is the KEK, KCK and replay counter.
1776 * After rekeying was done it should (for example during resume) notify
1777 * userspace of the new replay counter using ieee80211_gtk_rekey_notify().
1779 * @hw_scan: Ask the hardware to service the scan request, no need to start
1780 * the scan state machine in stack. The scan must honour the channel
1781 * configuration done by the regulatory agent in the wiphy's
1782 * registered bands. The hardware (or the driver) needs to make sure
1783 * that power save is disabled.
1784 * The @req ie/ie_len members are rewritten by mac80211 to contain the
1785 * entire IEs after the SSID, so that drivers need not look at these
1786 * at all but just send them after the SSID -- mac80211 includes the
1787 * (extended) supported rates and HT information (where applicable).
1788 * When the scan finishes, ieee80211_scan_completed() must be called;
1789 * note that it also must be called when the scan cannot finish due to
1790 * any error unless this callback returned a negative error code.
1791 * The callback can sleep.
1793 * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan.
1794 * The driver should ask the hardware to cancel the scan (if possible),
1795 * but the scan will be completed only after the driver will call
1796 * ieee80211_scan_completed().
1797 * This callback is needed for wowlan, to prevent enqueueing a new
1798 * scan_work after the low-level driver was already suspended.
1799 * The callback can sleep.
1801 * @sched_scan_start: Ask the hardware to start scanning repeatedly at
1802 * specific intervals. The driver must call the
1803 * ieee80211_sched_scan_results() function whenever it finds results.
1804 * This process will continue until sched_scan_stop is called.
1806 * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan.
1808 * @sw_scan_start: Notifier function that is called just before a software scan
1809 * is started. Can be NULL, if the driver doesn't need this notification.
1810 * The callback can sleep.
1812 * @sw_scan_complete: Notifier function that is called just after a
1813 * software scan finished. Can be NULL, if the driver doesn't need
1814 * this notification.
1815 * The callback can sleep.
1817 * @get_stats: Return low-level statistics.
1818 * Returns zero if statistics are available.
1819 * The callback can sleep.
1821 * @get_tkip_seq: If your device implements TKIP encryption in hardware this
1822 * callback should be provided to read the TKIP transmit IVs (both IV32
1823 * and IV16) for the given key from hardware.
1824 * The callback must be atomic.
1826 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this
1827 * if the device does fragmentation by itself; if this callback is
1828 * implemented then the stack will not do fragmentation.
1829 * The callback can sleep.
1831 * @set_rts_threshold: Configuration of RTS threshold (if device needs it)
1832 * The callback can sleep.
1834 * @sta_add: Notifies low level driver about addition of an associated station,
1835 * AP, IBSS/WDS/mesh peer etc. This callback can sleep.
1837 * @sta_remove: Notifies low level driver about removal of an associated
1838 * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep.
1840 * @sta_notify: Notifies low level driver about power state transition of an
1841 * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating
1842 * in AP mode, this callback will not be called when the flag
1843 * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic.
1845 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
1846 * bursting) for a hardware TX queue.
1847 * Returns a negative error code on failure.
1848 * The callback can sleep.
1850 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently,
1851 * this is only used for IBSS mode BSSID merging and debugging. Is not a
1852 * required function.
1853 * The callback can sleep.
1855 * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware.
1856 * Currently, this is only used for IBSS mode debugging. Is not a
1857 * required function.
1858 * The callback can sleep.
1860 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize
1861 * with other STAs in the IBSS. This is only used in IBSS mode. This
1862 * function is optional if the firmware/hardware takes full care of
1863 * TSF synchronization.
1864 * The callback can sleep.
1866 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us.
1867 * This is needed only for IBSS mode and the result of this function is
1868 * used to determine whether to reply to Probe Requests.
1869 * Returns non-zero if this device sent the last beacon.
1870 * The callback can sleep.
1872 * @ampdu_action: Perform a certain A-MPDU action
1873 * The RA/TID combination determines the destination and TID we want
1874 * the ampdu action to be performed for. The action is defined through
1875 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn)
1876 * is the first frame we expect to perform the action on. Notice
1877 * that TX/RX_STOP can pass NULL for this parameter.
1878 * The @buf_size parameter is only valid when the action is set to
1879 * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder
1880 * buffer size (number of subframes) for this session -- the driver
1881 * may neither send aggregates containing more subframes than this
1882 * nor send aggregates in a way that lost frames would exceed the
1883 * buffer size. If just limiting the aggregate size, this would be
1884 * possible with a buf_size of 8:
1886 * - RX: 2....7 (lost frame #1)
1888 * which is invalid since #1 was now re-transmitted well past the
1889 * buffer size of 8. Correct ways to retransmit #1 would be:
1890 * - TX: 1 or 18 or 81
1891 * Even "189" would be wrong since 1 could be lost again.
1893 * Returns a negative error code on failure.
1894 * The callback can sleep.
1896 * @get_survey: Return per-channel survey information
1898 * @rfkill_poll: Poll rfkill hardware state. If you need this, you also
1899 * need to set wiphy->rfkill_poll to %true before registration,
1900 * and need to call wiphy_rfkill_set_hw_state() in the callback.
1901 * The callback can sleep.
1903 * @set_coverage_class: Set slot time for given coverage class as specified
1904 * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout
1905 * accordingly. This callback is not required and may sleep.
1907 * @testmode_cmd: Implement a cfg80211 test mode command.
1908 * The callback can sleep.
1909 * @testmode_dump: Implement a cfg80211 test mode dump. The callback can sleep.
1911 * @flush: Flush all pending frames from the hardware queue, making sure
1912 * that the hardware queues are empty. If the parameter @drop is set
1913 * to %true, pending frames may be dropped. The callback can sleep.
1915 * @channel_switch: Drivers that need (or want) to offload the channel
1916 * switch operation for CSAs received from the AP may implement this
1917 * callback. They must then call ieee80211_chswitch_done() to indicate
1918 * completion of the channel switch.
1920 * @napi_poll: Poll Rx queue for incoming data frames.
1922 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device.
1923 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may
1924 * reject TX/RX mask combinations they cannot support by returning -EINVAL
1925 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX).
1927 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant).
1929 * @remain_on_channel: Starts an off-channel period on the given channel, must
1930 * call back to ieee80211_ready_on_channel() when on that channel. Note
1931 * that normal channel traffic is not stopped as this is intended for hw
1932 * offload. Frames to transmit on the off-channel channel are transmitted
1933 * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the
1934 * duration (which will always be non-zero) expires, the driver must call
1935 * ieee80211_remain_on_channel_expired(). This callback may sleep.
1936 * @cancel_remain_on_channel: Requests that an ongoing off-channel period is
1937 * aborted before it expires. This callback may sleep.
1939 * @set_ringparam: Set tx and rx ring sizes.
1941 * @get_ringparam: Get tx and rx ring current and maximum sizes.
1943 * @tx_frames_pending: Check if there is any pending frame in the hardware
1944 * queues before entering power save.
1946 * @set_bitrate_mask: Set a mask of rates to be used for rate control selection
1947 * when transmitting a frame. Currently only legacy rates are handled.
1948 * The callback can sleep.
1949 * @rssi_callback: Notify driver when the average RSSI goes above/below
1950 * thresholds that were registered previously. The callback can sleep.
1952 * @release_buffered_frames: Release buffered frames according to the given
1953 * parameters. In the case where the driver buffers some frames for
1954 * sleeping stations mac80211 will use this callback to tell the driver
1955 * to release some frames, either for PS-poll or uAPSD.
1956 * Note that if the @more_data paramter is %false the driver must check
1957 * if there are more frames on the given TIDs, and if there are more than
1958 * the frames being released then it must still set the more-data bit in
1959 * the frame. If the @more_data parameter is %true, then of course the
1960 * more-data bit must always be set.
1961 * The @tids parameter tells the driver which TIDs to release frames
1962 * from, for PS-poll it will always have only a single bit set.
1963 * In the case this is used for a PS-poll initiated release, the
1964 * @num_frames parameter will always be 1 so code can be shared. In
1965 * this case the driver must also set %IEEE80211_TX_STATUS_EOSP flag
1966 * on the TX status (and must report TX status) so that the PS-poll
1967 * period is properly ended. This is used to avoid sending multiple
1968 * responses for a retried PS-poll frame.
1969 * In the case this is used for uAPSD, the @num_frames parameter may be
1970 * bigger than one, but the driver may send fewer frames (it must send
1971 * at least one, however). In this case it is also responsible for
1972 * setting the EOSP flag in the QoS header of the frames. Also, when the
1973 * service period ends, the driver must set %IEEE80211_TX_STATUS_EOSP
1974 * on the last frame in the SP. Alternatively, it may call the function
1975 * ieee80211_sta_eosp_irqsafe() to inform mac80211 of the end of the SP.
1976 * This callback must be atomic.
1977 * @allow_buffered_frames: Prepare device to allow the given number of frames
1978 * to go out to the given station. The frames will be sent by mac80211
1979 * via the usual TX path after this call. The TX information for frames
1980 * released will also have the %IEEE80211_TX_CTL_POLL_RESPONSE flag set
1981 * and the last one will also have %IEEE80211_TX_STATUS_EOSP set. In case
1982 * frames from multiple TIDs are released and the driver might reorder
1983 * them between the TIDs, it must set the %IEEE80211_TX_STATUS_EOSP flag
1984 * on the last frame and clear it on all others and also handle the EOSP
1985 * bit in the QoS header correctly. Alternatively, it can also call the
1986 * ieee80211_sta_eosp_irqsafe() function.
1987 * The @tids parameter is a bitmap and tells the driver which TIDs the
1988 * frames will be on; it will at most have two bits set.
1989 * This callback must be atomic.
1991 struct ieee80211_ops
{
1992 void (*tx
)(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
1993 int (*start
)(struct ieee80211_hw
*hw
);
1994 void (*stop
)(struct ieee80211_hw
*hw
);
1996 int (*suspend
)(struct ieee80211_hw
*hw
, struct cfg80211_wowlan
*wowlan
);
1997 int (*resume
)(struct ieee80211_hw
*hw
);
1999 int (*add_interface
)(struct ieee80211_hw
*hw
,
2000 struct ieee80211_vif
*vif
);
2001 int (*change_interface
)(struct ieee80211_hw
*hw
,
2002 struct ieee80211_vif
*vif
,
2003 enum nl80211_iftype new_type
, bool p2p
);
2004 void (*remove_interface
)(struct ieee80211_hw
*hw
,
2005 struct ieee80211_vif
*vif
);
2006 int (*config
)(struct ieee80211_hw
*hw
, u32 changed
);
2007 void (*bss_info_changed
)(struct ieee80211_hw
*hw
,
2008 struct ieee80211_vif
*vif
,
2009 struct ieee80211_bss_conf
*info
,
2012 int (*tx_sync
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2013 const u8
*bssid
, enum ieee80211_tx_sync_type type
);
2014 void (*finish_tx_sync
)(struct ieee80211_hw
*hw
,
2015 struct ieee80211_vif
*vif
,
2017 enum ieee80211_tx_sync_type type
);
2019 u64 (*prepare_multicast
)(struct ieee80211_hw
*hw
,
2020 struct netdev_hw_addr_list
*mc_list
);
2021 void (*configure_filter
)(struct ieee80211_hw
*hw
,
2022 unsigned int changed_flags
,
2023 unsigned int *total_flags
,
2025 int (*set_tim
)(struct ieee80211_hw
*hw
, struct ieee80211_sta
*sta
,
2027 int (*set_key
)(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
2028 struct ieee80211_vif
*vif
, struct ieee80211_sta
*sta
,
2029 struct ieee80211_key_conf
*key
);
2030 void (*update_tkip_key
)(struct ieee80211_hw
*hw
,
2031 struct ieee80211_vif
*vif
,
2032 struct ieee80211_key_conf
*conf
,
2033 struct ieee80211_sta
*sta
,
2034 u32 iv32
, u16
*phase1key
);
2035 void (*set_rekey_data
)(struct ieee80211_hw
*hw
,
2036 struct ieee80211_vif
*vif
,
2037 struct cfg80211_gtk_rekey_data
*data
);
2038 int (*hw_scan
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2039 struct cfg80211_scan_request
*req
);
2040 void (*cancel_hw_scan
)(struct ieee80211_hw
*hw
,
2041 struct ieee80211_vif
*vif
);
2042 int (*sched_scan_start
)(struct ieee80211_hw
*hw
,
2043 struct ieee80211_vif
*vif
,
2044 struct cfg80211_sched_scan_request
*req
,
2045 struct ieee80211_sched_scan_ies
*ies
);
2046 void (*sched_scan_stop
)(struct ieee80211_hw
*hw
,
2047 struct ieee80211_vif
*vif
);
2048 void (*sw_scan_start
)(struct ieee80211_hw
*hw
);
2049 void (*sw_scan_complete
)(struct ieee80211_hw
*hw
);
2050 int (*get_stats
)(struct ieee80211_hw
*hw
,
2051 struct ieee80211_low_level_stats
*stats
);
2052 void (*get_tkip_seq
)(struct ieee80211_hw
*hw
, u8 hw_key_idx
,
2053 u32
*iv32
, u16
*iv16
);
2054 int (*set_frag_threshold
)(struct ieee80211_hw
*hw
, u32 value
);
2055 int (*set_rts_threshold
)(struct ieee80211_hw
*hw
, u32 value
);
2056 int (*sta_add
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2057 struct ieee80211_sta
*sta
);
2058 int (*sta_remove
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2059 struct ieee80211_sta
*sta
);
2060 void (*sta_notify
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2061 enum sta_notify_cmd
, struct ieee80211_sta
*sta
);
2062 int (*conf_tx
)(struct ieee80211_hw
*hw
, u16 queue
,
2063 const struct ieee80211_tx_queue_params
*params
);
2064 u64 (*get_tsf
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
);
2065 void (*set_tsf
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2067 void (*reset_tsf
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
);
2068 int (*tx_last_beacon
)(struct ieee80211_hw
*hw
);
2069 int (*ampdu_action
)(struct ieee80211_hw
*hw
,
2070 struct ieee80211_vif
*vif
,
2071 enum ieee80211_ampdu_mlme_action action
,
2072 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
2074 int (*get_survey
)(struct ieee80211_hw
*hw
, int idx
,
2075 struct survey_info
*survey
);
2076 void (*rfkill_poll
)(struct ieee80211_hw
*hw
);
2077 void (*set_coverage_class
)(struct ieee80211_hw
*hw
, u8 coverage_class
);
2078 #ifdef CONFIG_NL80211_TESTMODE
2079 int (*testmode_cmd
)(struct ieee80211_hw
*hw
, void *data
, int len
);
2080 int (*testmode_dump
)(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
2081 struct netlink_callback
*cb
,
2082 void *data
, int len
);
2084 void (*flush
)(struct ieee80211_hw
*hw
, bool drop
);
2085 void (*channel_switch
)(struct ieee80211_hw
*hw
,
2086 struct ieee80211_channel_switch
*ch_switch
);
2087 int (*napi_poll
)(struct ieee80211_hw
*hw
, int budget
);
2088 int (*set_antenna
)(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
);
2089 int (*get_antenna
)(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
);
2091 int (*remain_on_channel
)(struct ieee80211_hw
*hw
,
2092 struct ieee80211_channel
*chan
,
2093 enum nl80211_channel_type channel_type
,
2095 int (*cancel_remain_on_channel
)(struct ieee80211_hw
*hw
);
2096 int (*set_ringparam
)(struct ieee80211_hw
*hw
, u32 tx
, u32 rx
);
2097 void (*get_ringparam
)(struct ieee80211_hw
*hw
,
2098 u32
*tx
, u32
*tx_max
, u32
*rx
, u32
*rx_max
);
2099 bool (*tx_frames_pending
)(struct ieee80211_hw
*hw
);
2100 int (*set_bitrate_mask
)(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2101 const struct cfg80211_bitrate_mask
*mask
);
2102 void (*rssi_callback
)(struct ieee80211_hw
*hw
,
2103 enum ieee80211_rssi_event rssi_event
);
2105 void (*allow_buffered_frames
)(struct ieee80211_hw
*hw
,
2106 struct ieee80211_sta
*sta
,
2107 u16 tids
, int num_frames
,
2108 enum ieee80211_frame_release_type reason
,
2110 void (*release_buffered_frames
)(struct ieee80211_hw
*hw
,
2111 struct ieee80211_sta
*sta
,
2112 u16 tids
, int num_frames
,
2113 enum ieee80211_frame_release_type reason
,
2118 * ieee80211_alloc_hw - Allocate a new hardware device
2120 * This must be called once for each hardware device. The returned pointer
2121 * must be used to refer to this device when calling other functions.
2122 * mac80211 allocates a private data area for the driver pointed to by
2123 * @priv in &struct ieee80211_hw, the size of this area is given as
2126 * @priv_data_len: length of private data
2127 * @ops: callbacks for this device
2129 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
2130 const struct ieee80211_ops
*ops
);
2133 * ieee80211_register_hw - Register hardware device
2135 * You must call this function before any other functions in
2136 * mac80211. Note that before a hardware can be registered, you
2137 * need to fill the contained wiphy's information.
2139 * @hw: the device to register as returned by ieee80211_alloc_hw()
2141 int ieee80211_register_hw(struct ieee80211_hw
*hw
);
2144 * struct ieee80211_tpt_blink - throughput blink description
2145 * @throughput: throughput in Kbit/sec
2146 * @blink_time: blink time in milliseconds
2147 * (full cycle, ie. one off + one on period)
2149 struct ieee80211_tpt_blink
{
2155 * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags
2156 * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio
2157 * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working
2158 * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one
2159 * interface is connected in some way, including being an AP
2161 enum ieee80211_tpt_led_trigger_flags
{
2162 IEEE80211_TPT_LEDTRIG_FL_RADIO
= BIT(0),
2163 IEEE80211_TPT_LEDTRIG_FL_WORK
= BIT(1),
2164 IEEE80211_TPT_LEDTRIG_FL_CONNECTED
= BIT(2),
2167 #ifdef CONFIG_MAC80211_LEDS
2168 extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw
*hw
);
2169 extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw
*hw
);
2170 extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw
*hw
);
2171 extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw
*hw
);
2172 extern char *__ieee80211_create_tpt_led_trigger(
2173 struct ieee80211_hw
*hw
, unsigned int flags
,
2174 const struct ieee80211_tpt_blink
*blink_table
,
2175 unsigned int blink_table_len
);
2178 * ieee80211_get_tx_led_name - get name of TX LED
2180 * mac80211 creates a transmit LED trigger for each wireless hardware
2181 * that can be used to drive LEDs if your driver registers a LED device.
2182 * This function returns the name (or %NULL if not configured for LEDs)
2183 * of the trigger so you can automatically link the LED device.
2185 * @hw: the hardware to get the LED trigger name for
2187 static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw
*hw
)
2189 #ifdef CONFIG_MAC80211_LEDS
2190 return __ieee80211_get_tx_led_name(hw
);
2197 * ieee80211_get_rx_led_name - get name of RX LED
2199 * mac80211 creates a receive LED trigger for each wireless hardware
2200 * that can be used to drive LEDs if your driver registers a LED device.
2201 * This function returns the name (or %NULL if not configured for LEDs)
2202 * of the trigger so you can automatically link the LED device.
2204 * @hw: the hardware to get the LED trigger name for
2206 static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw
*hw
)
2208 #ifdef CONFIG_MAC80211_LEDS
2209 return __ieee80211_get_rx_led_name(hw
);
2216 * ieee80211_get_assoc_led_name - get name of association LED
2218 * mac80211 creates a association LED trigger for each wireless hardware
2219 * that can be used to drive LEDs if your driver registers a LED device.
2220 * This function returns the name (or %NULL if not configured for LEDs)
2221 * of the trigger so you can automatically link the LED device.
2223 * @hw: the hardware to get the LED trigger name for
2225 static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw
*hw
)
2227 #ifdef CONFIG_MAC80211_LEDS
2228 return __ieee80211_get_assoc_led_name(hw
);
2235 * ieee80211_get_radio_led_name - get name of radio LED
2237 * mac80211 creates a radio change LED trigger for each wireless hardware
2238 * that can be used to drive LEDs if your driver registers a LED device.
2239 * This function returns the name (or %NULL if not configured for LEDs)
2240 * of the trigger so you can automatically link the LED device.
2242 * @hw: the hardware to get the LED trigger name for
2244 static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw
*hw
)
2246 #ifdef CONFIG_MAC80211_LEDS
2247 return __ieee80211_get_radio_led_name(hw
);
2254 * ieee80211_create_tpt_led_trigger - create throughput LED trigger
2255 * @hw: the hardware to create the trigger for
2256 * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags
2257 * @blink_table: the blink table -- needs to be ordered by throughput
2258 * @blink_table_len: size of the blink table
2260 * This function returns %NULL (in case of error, or if no LED
2261 * triggers are configured) or the name of the new trigger.
2262 * This function must be called before ieee80211_register_hw().
2264 static inline char *
2265 ieee80211_create_tpt_led_trigger(struct ieee80211_hw
*hw
, unsigned int flags
,
2266 const struct ieee80211_tpt_blink
*blink_table
,
2267 unsigned int blink_table_len
)
2269 #ifdef CONFIG_MAC80211_LEDS
2270 return __ieee80211_create_tpt_led_trigger(hw
, flags
, blink_table
,
2278 * ieee80211_unregister_hw - Unregister a hardware device
2280 * This function instructs mac80211 to free allocated resources
2281 * and unregister netdevices from the networking subsystem.
2283 * @hw: the hardware to unregister
2285 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
);
2288 * ieee80211_free_hw - free hardware descriptor
2290 * This function frees everything that was allocated, including the
2291 * private data for the driver. You must call ieee80211_unregister_hw()
2292 * before calling this function.
2294 * @hw: the hardware to free
2296 void ieee80211_free_hw(struct ieee80211_hw
*hw
);
2299 * ieee80211_restart_hw - restart hardware completely
2301 * Call this function when the hardware was restarted for some reason
2302 * (hardware error, ...) and the driver is unable to restore its state
2303 * by itself. mac80211 assumes that at this point the driver/hardware
2304 * is completely uninitialised and stopped, it starts the process by
2305 * calling the ->start() operation. The driver will need to reset all
2306 * internal state that it has prior to calling this function.
2308 * @hw: the hardware to restart
2310 void ieee80211_restart_hw(struct ieee80211_hw
*hw
);
2312 /** ieee80211_napi_schedule - schedule NAPI poll
2314 * Use this function to schedule NAPI polling on a device.
2316 * @hw: the hardware to start polling
2318 void ieee80211_napi_schedule(struct ieee80211_hw
*hw
);
2320 /** ieee80211_napi_complete - complete NAPI polling
2322 * Use this function to finish NAPI polling on a device.
2324 * @hw: the hardware to stop polling
2326 void ieee80211_napi_complete(struct ieee80211_hw
*hw
);
2329 * ieee80211_rx - receive frame
2331 * Use this function to hand received frames to mac80211. The receive
2332 * buffer in @skb must start with an IEEE 802.11 header. In case of a
2333 * paged @skb is used, the driver is recommended to put the ieee80211
2334 * header of the frame on the linear part of the @skb to avoid memory
2335 * allocation and/or memcpy by the stack.
2337 * This function may not be called in IRQ context. Calls to this function
2338 * for a single hardware must be synchronized against each other. Calls to
2339 * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be
2340 * mixed for a single hardware.
2342 * In process context use instead ieee80211_rx_ni().
2344 * @hw: the hardware this frame came in on
2345 * @skb: the buffer to receive, owned by mac80211 after this call
2347 void ieee80211_rx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
2350 * ieee80211_rx_irqsafe - receive frame
2352 * Like ieee80211_rx() but can be called in IRQ context
2353 * (internally defers to a tasklet.)
2355 * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not
2356 * be mixed for a single hardware.
2358 * @hw: the hardware this frame came in on
2359 * @skb: the buffer to receive, owned by mac80211 after this call
2361 void ieee80211_rx_irqsafe(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
2364 * ieee80211_rx_ni - receive frame (in process context)
2366 * Like ieee80211_rx() but can be called in process context
2367 * (internally disables bottom halves).
2369 * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may
2370 * not be mixed for a single hardware.
2372 * @hw: the hardware this frame came in on
2373 * @skb: the buffer to receive, owned by mac80211 after this call
2375 static inline void ieee80211_rx_ni(struct ieee80211_hw
*hw
,
2376 struct sk_buff
*skb
)
2379 ieee80211_rx(hw
, skb
);
2384 * ieee80211_sta_ps_transition - PS transition for connected sta
2386 * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS
2387 * flag set, use this function to inform mac80211 about a connected station
2388 * entering/leaving PS mode.
2390 * This function may not be called in IRQ context or with softirqs enabled.
2392 * Calls to this function for a single hardware must be synchronized against
2395 * The function returns -EINVAL when the requested PS mode is already set.
2397 * @sta: currently connected sta
2398 * @start: start or stop PS
2400 int ieee80211_sta_ps_transition(struct ieee80211_sta
*sta
, bool start
);
2403 * ieee80211_sta_ps_transition_ni - PS transition for connected sta
2404 * (in process context)
2406 * Like ieee80211_sta_ps_transition() but can be called in process context
2407 * (internally disables bottom halves). Concurrent call restriction still
2410 * @sta: currently connected sta
2411 * @start: start or stop PS
2413 static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta
*sta
,
2419 ret
= ieee80211_sta_ps_transition(sta
, start
);
2426 * The TX headroom reserved by mac80211 for its own tx_status functions.
2427 * This is enough for the radiotap header.
2429 #define IEEE80211_TX_STATUS_HEADROOM 13
2432 * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames
2433 * @sta: &struct ieee80211_sta pointer for the sleeping station
2434 * @tid: the TID that has buffered frames
2435 * @buffered: indicates whether or not frames are buffered for this TID
2437 * If a driver buffers frames for a powersave station instead of passing
2438 * them back to mac80211 for retransmission, the station may still need
2439 * to be told that there are buffered frames via the TIM bit.
2441 * This function informs mac80211 whether or not there are frames that are
2442 * buffered in the driver for a given TID; mac80211 can then use this data
2443 * to set the TIM bit (NOTE: This may call back into the driver's set_tim
2444 * call! Beware of the locking!)
2446 * If all frames are released to the station (due to PS-poll or uAPSD)
2447 * then the driver needs to inform mac80211 that there no longer are
2448 * frames buffered. However, when the station wakes up mac80211 assumes
2449 * that all buffered frames will be transmitted and clears this data,
2450 * drivers need to make sure they inform mac80211 about all buffered
2451 * frames on the sleep transition (sta_notify() with %STA_NOTIFY_SLEEP).
2453 * Note that technically mac80211 only needs to know this per AC, not per
2454 * TID, but since driver buffering will inevitably happen per TID (since
2455 * it is related to aggregation) it is easier to make mac80211 map the
2456 * TID to the AC as required instead of keeping track in all drivers that
2459 void ieee80211_sta_set_buffered(struct ieee80211_sta
*sta
,
2460 u8 tid
, bool buffered
);
2463 * ieee80211_tx_status - transmit status callback
2465 * Call this function for all transmitted frames after they have been
2466 * transmitted. It is permissible to not call this function for
2467 * multicast frames but this can affect statistics.
2469 * This function may not be called in IRQ context. Calls to this function
2470 * for a single hardware must be synchronized against each other. Calls
2471 * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe()
2472 * may not be mixed for a single hardware.
2474 * @hw: the hardware the frame was transmitted by
2475 * @skb: the frame that was transmitted, owned by mac80211 after this call
2477 void ieee80211_tx_status(struct ieee80211_hw
*hw
,
2478 struct sk_buff
*skb
);
2481 * ieee80211_tx_status_ni - transmit status callback (in process context)
2483 * Like ieee80211_tx_status() but can be called in process context.
2485 * Calls to this function, ieee80211_tx_status() and
2486 * ieee80211_tx_status_irqsafe() may not be mixed
2487 * for a single hardware.
2489 * @hw: the hardware the frame was transmitted by
2490 * @skb: the frame that was transmitted, owned by mac80211 after this call
2492 static inline void ieee80211_tx_status_ni(struct ieee80211_hw
*hw
,
2493 struct sk_buff
*skb
)
2496 ieee80211_tx_status(hw
, skb
);
2501 * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback
2503 * Like ieee80211_tx_status() but can be called in IRQ context
2504 * (internally defers to a tasklet.)
2506 * Calls to this function, ieee80211_tx_status() and
2507 * ieee80211_tx_status_ni() may not be mixed for a single hardware.
2509 * @hw: the hardware the frame was transmitted by
2510 * @skb: the frame that was transmitted, owned by mac80211 after this call
2512 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
2513 struct sk_buff
*skb
);
2516 * ieee80211_report_low_ack - report non-responding station
2518 * When operating in AP-mode, call this function to report a non-responding
2521 * @sta: the non-responding connected sta
2522 * @num_packets: number of packets sent to @sta without a response
2524 void ieee80211_report_low_ack(struct ieee80211_sta
*sta
, u32 num_packets
);
2527 * ieee80211_beacon_get_tim - beacon generation function
2528 * @hw: pointer obtained from ieee80211_alloc_hw().
2529 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2530 * @tim_offset: pointer to variable that will receive the TIM IE offset.
2531 * Set to 0 if invalid (in non-AP modes).
2532 * @tim_length: pointer to variable that will receive the TIM IE length,
2533 * (including the ID and length bytes!).
2534 * Set to 0 if invalid (in non-AP modes).
2536 * If the driver implements beaconing modes, it must use this function to
2537 * obtain the beacon frame/template.
2539 * If the beacon frames are generated by the host system (i.e., not in
2540 * hardware/firmware), the driver uses this function to get each beacon
2541 * frame from mac80211 -- it is responsible for calling this function
2542 * before the beacon is needed (e.g. based on hardware interrupt).
2544 * If the beacon frames are generated by the device, then the driver
2545 * must use the returned beacon as the template and change the TIM IE
2546 * according to the current DTIM parameters/TIM bitmap.
2548 * The driver is responsible for freeing the returned skb.
2550 struct sk_buff
*ieee80211_beacon_get_tim(struct ieee80211_hw
*hw
,
2551 struct ieee80211_vif
*vif
,
2552 u16
*tim_offset
, u16
*tim_length
);
2555 * ieee80211_beacon_get - beacon generation function
2556 * @hw: pointer obtained from ieee80211_alloc_hw().
2557 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2559 * See ieee80211_beacon_get_tim().
2561 static inline struct sk_buff
*ieee80211_beacon_get(struct ieee80211_hw
*hw
,
2562 struct ieee80211_vif
*vif
)
2564 return ieee80211_beacon_get_tim(hw
, vif
, NULL
, NULL
);
2568 * ieee80211_pspoll_get - retrieve a PS Poll template
2569 * @hw: pointer obtained from ieee80211_alloc_hw().
2570 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2572 * Creates a PS Poll a template which can, for example, uploaded to
2573 * hardware. The template must be updated after association so that correct
2574 * AID, BSSID and MAC address is used.
2576 * Note: Caller (or hardware) is responsible for setting the
2577 * &IEEE80211_FCTL_PM bit.
2579 struct sk_buff
*ieee80211_pspoll_get(struct ieee80211_hw
*hw
,
2580 struct ieee80211_vif
*vif
);
2583 * ieee80211_nullfunc_get - retrieve a nullfunc template
2584 * @hw: pointer obtained from ieee80211_alloc_hw().
2585 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2587 * Creates a Nullfunc template which can, for example, uploaded to
2588 * hardware. The template must be updated after association so that correct
2589 * BSSID and address is used.
2591 * Note: Caller (or hardware) is responsible for setting the
2592 * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields.
2594 struct sk_buff
*ieee80211_nullfunc_get(struct ieee80211_hw
*hw
,
2595 struct ieee80211_vif
*vif
);
2598 * ieee80211_probereq_get - retrieve a Probe Request template
2599 * @hw: pointer obtained from ieee80211_alloc_hw().
2600 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2601 * @ssid: SSID buffer
2602 * @ssid_len: length of SSID
2603 * @ie: buffer containing all IEs except SSID for the template
2604 * @ie_len: length of the IE buffer
2606 * Creates a Probe Request template which can, for example, be uploaded to
2609 struct sk_buff
*ieee80211_probereq_get(struct ieee80211_hw
*hw
,
2610 struct ieee80211_vif
*vif
,
2611 const u8
*ssid
, size_t ssid_len
,
2612 const u8
*ie
, size_t ie_len
);
2615 * ieee80211_rts_get - RTS frame generation function
2616 * @hw: pointer obtained from ieee80211_alloc_hw().
2617 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2618 * @frame: pointer to the frame that is going to be protected by the RTS.
2619 * @frame_len: the frame length (in octets).
2620 * @frame_txctl: &struct ieee80211_tx_info of the frame.
2621 * @rts: The buffer where to store the RTS frame.
2623 * If the RTS frames are generated by the host system (i.e., not in
2624 * hardware/firmware), the low-level driver uses this function to receive
2625 * the next RTS frame from the 802.11 code. The low-level is responsible
2626 * for calling this function before and RTS frame is needed.
2628 void ieee80211_rts_get(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2629 const void *frame
, size_t frame_len
,
2630 const struct ieee80211_tx_info
*frame_txctl
,
2631 struct ieee80211_rts
*rts
);
2634 * ieee80211_rts_duration - Get the duration field for an RTS frame
2635 * @hw: pointer obtained from ieee80211_alloc_hw().
2636 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2637 * @frame_len: the length of the frame that is going to be protected by the RTS.
2638 * @frame_txctl: &struct ieee80211_tx_info of the frame.
2640 * If the RTS is generated in firmware, but the host system must provide
2641 * the duration field, the low-level driver uses this function to receive
2642 * the duration field value in little-endian byteorder.
2644 __le16
ieee80211_rts_duration(struct ieee80211_hw
*hw
,
2645 struct ieee80211_vif
*vif
, size_t frame_len
,
2646 const struct ieee80211_tx_info
*frame_txctl
);
2649 * ieee80211_ctstoself_get - CTS-to-self frame generation function
2650 * @hw: pointer obtained from ieee80211_alloc_hw().
2651 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2652 * @frame: pointer to the frame that is going to be protected by the CTS-to-self.
2653 * @frame_len: the frame length (in octets).
2654 * @frame_txctl: &struct ieee80211_tx_info of the frame.
2655 * @cts: The buffer where to store the CTS-to-self frame.
2657 * If the CTS-to-self frames are generated by the host system (i.e., not in
2658 * hardware/firmware), the low-level driver uses this function to receive
2659 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible
2660 * for calling this function before and CTS-to-self frame is needed.
2662 void ieee80211_ctstoself_get(struct ieee80211_hw
*hw
,
2663 struct ieee80211_vif
*vif
,
2664 const void *frame
, size_t frame_len
,
2665 const struct ieee80211_tx_info
*frame_txctl
,
2666 struct ieee80211_cts
*cts
);
2669 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame
2670 * @hw: pointer obtained from ieee80211_alloc_hw().
2671 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2672 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self.
2673 * @frame_txctl: &struct ieee80211_tx_info of the frame.
2675 * If the CTS-to-self is generated in firmware, but the host system must provide
2676 * the duration field, the low-level driver uses this function to receive
2677 * the duration field value in little-endian byteorder.
2679 __le16
ieee80211_ctstoself_duration(struct ieee80211_hw
*hw
,
2680 struct ieee80211_vif
*vif
,
2682 const struct ieee80211_tx_info
*frame_txctl
);
2685 * ieee80211_generic_frame_duration - Calculate the duration field for a frame
2686 * @hw: pointer obtained from ieee80211_alloc_hw().
2687 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2688 * @frame_len: the length of the frame.
2689 * @rate: the rate at which the frame is going to be transmitted.
2691 * Calculate the duration field of some generic frame, given its
2692 * length and transmission rate (in 100kbps).
2694 __le16
ieee80211_generic_frame_duration(struct ieee80211_hw
*hw
,
2695 struct ieee80211_vif
*vif
,
2697 struct ieee80211_rate
*rate
);
2700 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
2701 * @hw: pointer as obtained from ieee80211_alloc_hw().
2702 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
2704 * Function for accessing buffered broadcast and multicast frames. If
2705 * hardware/firmware does not implement buffering of broadcast/multicast
2706 * frames when power saving is used, 802.11 code buffers them in the host
2707 * memory. The low-level driver uses this function to fetch next buffered
2708 * frame. In most cases, this is used when generating beacon frame. This
2709 * function returns a pointer to the next buffered skb or NULL if no more
2710 * buffered frames are available.
2712 * Note: buffered frames are returned only after DTIM beacon frame was
2713 * generated with ieee80211_beacon_get() and the low-level driver must thus
2714 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns
2715 * NULL if the previous generated beacon was not DTIM, so the low-level driver
2716 * does not need to check for DTIM beacons separately and should be able to
2717 * use common code for all beacons.
2720 ieee80211_get_buffered_bc(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
);
2723 * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32
2725 * This function returns the TKIP phase 1 key for the given IV32.
2727 * @keyconf: the parameter passed with the set key
2728 * @iv32: IV32 to get the P1K for
2729 * @p1k: a buffer to which the key will be written, as 5 u16 values
2731 void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf
*keyconf
,
2732 u32 iv32
, u16
*p1k
);
2735 * ieee80211_get_tkip_p1k - get a TKIP phase 1 key
2737 * This function returns the TKIP phase 1 key for the IV32 taken
2738 * from the given packet.
2740 * @keyconf: the parameter passed with the set key
2741 * @skb: the packet to take the IV32 value from that will be encrypted
2743 * @p1k: a buffer to which the key will be written, as 5 u16 values
2745 static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf
*keyconf
,
2746 struct sk_buff
*skb
, u16
*p1k
)
2748 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
2749 const u8
*data
= (u8
*)hdr
+ ieee80211_hdrlen(hdr
->frame_control
);
2750 u32 iv32
= get_unaligned_le32(&data
[4]);
2752 ieee80211_get_tkip_p1k_iv(keyconf
, iv32
, p1k
);
2756 * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX
2758 * This function returns the TKIP phase 1 key for the given IV32
2759 * and transmitter address.
2761 * @keyconf: the parameter passed with the set key
2762 * @ta: TA that will be used with the key
2763 * @iv32: IV32 to get the P1K for
2764 * @p1k: a buffer to which the key will be written, as 5 u16 values
2766 void ieee80211_get_tkip_rx_p1k(struct ieee80211_key_conf
*keyconf
,
2767 const u8
*ta
, u32 iv32
, u16
*p1k
);
2770 * ieee80211_get_tkip_p2k - get a TKIP phase 2 key
2772 * This function computes the TKIP RC4 key for the IV values
2775 * @keyconf: the parameter passed with the set key
2776 * @skb: the packet to take the IV32/IV16 values from that will be
2777 * encrypted with this key
2778 * @p2k: a buffer to which the key will be written, 16 bytes
2780 void ieee80211_get_tkip_p2k(struct ieee80211_key_conf
*keyconf
,
2781 struct sk_buff
*skb
, u8
*p2k
);
2784 * struct ieee80211_key_seq - key sequence counter
2786 * @tkip: TKIP data, containing IV32 and IV16 in host byte order
2787 * @ccmp: PN data, most significant byte first (big endian,
2788 * reverse order than in packet)
2789 * @aes_cmac: PN data, most significant byte first (big endian,
2790 * reverse order than in packet)
2792 struct ieee80211_key_seq
{
2808 * ieee80211_get_key_tx_seq - get key TX sequence counter
2810 * @keyconf: the parameter passed with the set key
2811 * @seq: buffer to receive the sequence data
2813 * This function allows a driver to retrieve the current TX IV/PN
2814 * for the given key. It must not be called if IV generation is
2815 * offloaded to the device.
2817 * Note that this function may only be called when no TX processing
2818 * can be done concurrently, for example when queues are stopped
2819 * and the stop has been synchronized.
2821 void ieee80211_get_key_tx_seq(struct ieee80211_key_conf
*keyconf
,
2822 struct ieee80211_key_seq
*seq
);
2825 * ieee80211_get_key_rx_seq - get key RX sequence counter
2827 * @keyconf: the parameter passed with the set key
2828 * @tid: The TID, or -1 for the management frame value (CCMP only);
2829 * the value on TID 0 is also used for non-QoS frames. For
2830 * CMAC, only TID 0 is valid.
2831 * @seq: buffer to receive the sequence data
2833 * This function allows a driver to retrieve the current RX IV/PNs
2834 * for the given key. It must not be called if IV checking is done
2835 * by the device and not by mac80211.
2837 * Note that this function may only be called when no RX processing
2838 * can be done concurrently.
2840 void ieee80211_get_key_rx_seq(struct ieee80211_key_conf
*keyconf
,
2841 int tid
, struct ieee80211_key_seq
*seq
);
2844 * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying
2845 * @vif: virtual interface the rekeying was done on
2846 * @bssid: The BSSID of the AP, for checking association
2847 * @replay_ctr: the new replay counter after GTK rekeying
2848 * @gfp: allocation flags
2850 void ieee80211_gtk_rekey_notify(struct ieee80211_vif
*vif
, const u8
*bssid
,
2851 const u8
*replay_ctr
, gfp_t gfp
);
2854 * ieee80211_wake_queue - wake specific queue
2855 * @hw: pointer as obtained from ieee80211_alloc_hw().
2856 * @queue: queue number (counted from zero).
2858 * Drivers should use this function instead of netif_wake_queue.
2860 void ieee80211_wake_queue(struct ieee80211_hw
*hw
, int queue
);
2863 * ieee80211_stop_queue - stop specific queue
2864 * @hw: pointer as obtained from ieee80211_alloc_hw().
2865 * @queue: queue number (counted from zero).
2867 * Drivers should use this function instead of netif_stop_queue.
2869 void ieee80211_stop_queue(struct ieee80211_hw
*hw
, int queue
);
2872 * ieee80211_queue_stopped - test status of the queue
2873 * @hw: pointer as obtained from ieee80211_alloc_hw().
2874 * @queue: queue number (counted from zero).
2876 * Drivers should use this function instead of netif_stop_queue.
2879 int ieee80211_queue_stopped(struct ieee80211_hw
*hw
, int queue
);
2882 * ieee80211_stop_queues - stop all queues
2883 * @hw: pointer as obtained from ieee80211_alloc_hw().
2885 * Drivers should use this function instead of netif_stop_queue.
2887 void ieee80211_stop_queues(struct ieee80211_hw
*hw
);
2890 * ieee80211_wake_queues - wake all queues
2891 * @hw: pointer as obtained from ieee80211_alloc_hw().
2893 * Drivers should use this function instead of netif_wake_queue.
2895 void ieee80211_wake_queues(struct ieee80211_hw
*hw
);
2898 * ieee80211_scan_completed - completed hardware scan
2900 * When hardware scan offload is used (i.e. the hw_scan() callback is
2901 * assigned) this function needs to be called by the driver to notify
2902 * mac80211 that the scan finished. This function can be called from
2903 * any context, including hardirq context.
2905 * @hw: the hardware that finished the scan
2906 * @aborted: set to true if scan was aborted
2908 void ieee80211_scan_completed(struct ieee80211_hw
*hw
, bool aborted
);
2911 * ieee80211_sched_scan_results - got results from scheduled scan
2913 * When a scheduled scan is running, this function needs to be called by the
2914 * driver whenever there are new scan results available.
2916 * @hw: the hardware that is performing scheduled scans
2918 void ieee80211_sched_scan_results(struct ieee80211_hw
*hw
);
2921 * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped
2923 * When a scheduled scan is running, this function can be called by
2924 * the driver if it needs to stop the scan to perform another task.
2925 * Usual scenarios are drivers that cannot continue the scheduled scan
2926 * while associating, for instance.
2928 * @hw: the hardware that is performing scheduled scans
2930 void ieee80211_sched_scan_stopped(struct ieee80211_hw
*hw
);
2933 * ieee80211_iterate_active_interfaces - iterate active interfaces
2935 * This function iterates over the interfaces associated with a given
2936 * hardware that are currently active and calls the callback for them.
2937 * This function allows the iterator function to sleep, when the iterator
2938 * function is atomic @ieee80211_iterate_active_interfaces_atomic can
2940 * Does not iterate over a new interface during add_interface()
2942 * @hw: the hardware struct of which the interfaces should be iterated over
2943 * @iterator: the iterator function to call
2944 * @data: first argument of the iterator function
2946 void ieee80211_iterate_active_interfaces(struct ieee80211_hw
*hw
,
2947 void (*iterator
)(void *data
, u8
*mac
,
2948 struct ieee80211_vif
*vif
),
2952 * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces
2954 * This function iterates over the interfaces associated with a given
2955 * hardware that are currently active and calls the callback for them.
2956 * This function requires the iterator callback function to be atomic,
2957 * if that is not desired, use @ieee80211_iterate_active_interfaces instead.
2958 * Does not iterate over a new interface during add_interface()
2960 * @hw: the hardware struct of which the interfaces should be iterated over
2961 * @iterator: the iterator function to call, cannot sleep
2962 * @data: first argument of the iterator function
2964 void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw
*hw
,
2965 void (*iterator
)(void *data
,
2967 struct ieee80211_vif
*vif
),
2971 * ieee80211_queue_work - add work onto the mac80211 workqueue
2973 * Drivers and mac80211 use this to add work onto the mac80211 workqueue.
2974 * This helper ensures drivers are not queueing work when they should not be.
2976 * @hw: the hardware struct for the interface we are adding work for
2977 * @work: the work we want to add onto the mac80211 workqueue
2979 void ieee80211_queue_work(struct ieee80211_hw
*hw
, struct work_struct
*work
);
2982 * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue
2984 * Drivers and mac80211 use this to queue delayed work onto the mac80211
2987 * @hw: the hardware struct for the interface we are adding work for
2988 * @dwork: delayable work to queue onto the mac80211 workqueue
2989 * @delay: number of jiffies to wait before queueing
2991 void ieee80211_queue_delayed_work(struct ieee80211_hw
*hw
,
2992 struct delayed_work
*dwork
,
2993 unsigned long delay
);
2996 * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
2997 * @sta: the station for which to start a BA session
2998 * @tid: the TID to BA on.
2999 * @timeout: session timeout value (in TUs)
3001 * Return: success if addBA request was sent, failure otherwise
3003 * Although mac80211/low level driver/user space application can estimate
3004 * the need to start aggregation on a certain RA/TID, the session level
3005 * will be managed by the mac80211.
3007 int ieee80211_start_tx_ba_session(struct ieee80211_sta
*sta
, u16 tid
,
3011 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate.
3012 * @vif: &struct ieee80211_vif pointer from the add_interface callback
3013 * @ra: receiver address of the BA session recipient.
3014 * @tid: the TID to BA on.
3016 * This function must be called by low level driver once it has
3017 * finished with preparations for the BA session. It can be called
3020 void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif
*vif
, const u8
*ra
,
3024 * ieee80211_stop_tx_ba_session - Stop a Block Ack session.
3025 * @sta: the station whose BA session to stop
3026 * @tid: the TID to stop BA.
3028 * Return: negative error if the TID is invalid, or no aggregation active
3030 * Although mac80211/low level driver/user space application can estimate
3031 * the need to stop aggregation on a certain RA/TID, the session level
3032 * will be managed by the mac80211.
3034 int ieee80211_stop_tx_ba_session(struct ieee80211_sta
*sta
, u16 tid
);
3037 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate.
3038 * @vif: &struct ieee80211_vif pointer from the add_interface callback
3039 * @ra: receiver address of the BA session recipient.
3040 * @tid: the desired TID to BA on.
3042 * This function must be called by low level driver once it has
3043 * finished with preparations for the BA session tear down. It
3044 * can be called from any context.
3046 void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif
*vif
, const u8
*ra
,
3050 * ieee80211_find_sta - find a station
3052 * @vif: virtual interface to look for station on
3053 * @addr: station's address
3055 * This function must be called under RCU lock and the
3056 * resulting pointer is only valid under RCU lock as well.
3058 struct ieee80211_sta
*ieee80211_find_sta(struct ieee80211_vif
*vif
,
3062 * ieee80211_find_sta_by_ifaddr - find a station on hardware
3064 * @hw: pointer as obtained from ieee80211_alloc_hw()
3065 * @addr: remote station's address
3066 * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'.
3068 * This function must be called under RCU lock and the
3069 * resulting pointer is only valid under RCU lock as well.
3071 * NOTE: You may pass NULL for localaddr, but then you will just get
3072 * the first STA that matches the remote address 'addr'.
3073 * We can have multiple STA associated with multiple
3074 * logical stations (e.g. consider a station connecting to another
3075 * BSSID on the same AP hardware without disconnecting first).
3076 * In this case, the result of this method with localaddr NULL
3079 * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible.
3081 struct ieee80211_sta
*ieee80211_find_sta_by_ifaddr(struct ieee80211_hw
*hw
,
3083 const u8
*localaddr
);
3086 * ieee80211_sta_block_awake - block station from waking up
3088 * @pubsta: the station
3089 * @block: whether to block or unblock
3091 * Some devices require that all frames that are on the queues
3092 * for a specific station that went to sleep are flushed before
3093 * a poll response or frames after the station woke up can be
3094 * delivered to that it. Note that such frames must be rejected
3095 * by the driver as filtered, with the appropriate status flag.
3097 * This function allows implementing this mode in a race-free
3100 * To do this, a driver must keep track of the number of frames
3101 * still enqueued for a specific station. If this number is not
3102 * zero when the station goes to sleep, the driver must call
3103 * this function to force mac80211 to consider the station to
3104 * be asleep regardless of the station's actual state. Once the
3105 * number of outstanding frames reaches zero, the driver must
3106 * call this function again to unblock the station. That will
3107 * cause mac80211 to be able to send ps-poll responses, and if
3108 * the station queried in the meantime then frames will also
3109 * be sent out as a result of this. Additionally, the driver
3110 * will be notified that the station woke up some time after
3111 * it is unblocked, regardless of whether the station actually
3112 * woke up while blocked or not.
3114 void ieee80211_sta_block_awake(struct ieee80211_hw
*hw
,
3115 struct ieee80211_sta
*pubsta
, bool block
);
3118 * ieee80211_sta_eosp - notify mac80211 about end of SP
3119 * @pubsta: the station
3121 * When a device transmits frames in a way that it can't tell
3122 * mac80211 in the TX status about the EOSP, it must clear the
3123 * %IEEE80211_TX_STATUS_EOSP bit and call this function instead.
3124 * This applies for PS-Poll as well as uAPSD.
3126 * Note that there is no non-_irqsafe version right now as
3127 * it wasn't needed, but just like _tx_status() and _rx()
3128 * must not be mixed in irqsafe/non-irqsafe versions, this
3129 * function must not be mixed with those either. Use the
3130 * all irqsafe, or all non-irqsafe, don't mix! If you need
3131 * the non-irqsafe version of this, you need to add it.
3133 void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta
*pubsta
);
3136 * ieee80211_iter_keys - iterate keys programmed into the device
3137 * @hw: pointer obtained from ieee80211_alloc_hw()
3138 * @vif: virtual interface to iterate, may be %NULL for all
3139 * @iter: iterator function that will be called for each key
3140 * @iter_data: custom data to pass to the iterator function
3142 * This function can be used to iterate all the keys known to
3143 * mac80211, even those that weren't previously programmed into
3144 * the device. This is intended for use in WoWLAN if the device
3145 * needs reprogramming of the keys during suspend. Note that due
3146 * to locking reasons, it is also only safe to call this at few
3147 * spots since it must hold the RTNL and be able to sleep.
3149 * The order in which the keys are iterated matches the order
3150 * in which they were originally installed and handed to the
3153 void ieee80211_iter_keys(struct ieee80211_hw
*hw
,
3154 struct ieee80211_vif
*vif
,
3155 void (*iter
)(struct ieee80211_hw
*hw
,
3156 struct ieee80211_vif
*vif
,
3157 struct ieee80211_sta
*sta
,
3158 struct ieee80211_key_conf
*key
,
3163 * ieee80211_ap_probereq_get - retrieve a Probe Request template
3164 * @hw: pointer obtained from ieee80211_alloc_hw().
3165 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3167 * Creates a Probe Request template which can, for example, be uploaded to
3168 * hardware. The template is filled with bssid, ssid and supported rate
3169 * information. This function must only be called from within the
3170 * .bss_info_changed callback function and only in managed mode. The function
3171 * is only useful when the interface is associated, otherwise it will return
3174 struct sk_buff
*ieee80211_ap_probereq_get(struct ieee80211_hw
*hw
,
3175 struct ieee80211_vif
*vif
);
3178 * ieee80211_beacon_loss - inform hardware does not receive beacons
3180 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3182 * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER and
3183 * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the
3184 * hardware is not receiving beacons with this function.
3186 void ieee80211_beacon_loss(struct ieee80211_vif
*vif
);
3189 * ieee80211_connection_loss - inform hardware has lost connection to the AP
3191 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3193 * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER, and
3194 * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver
3195 * needs to inform if the connection to the AP has been lost.
3197 * This function will cause immediate change to disassociated state,
3198 * without connection recovery attempts.
3200 void ieee80211_connection_loss(struct ieee80211_vif
*vif
);
3203 * ieee80211_resume_disconnect - disconnect from AP after resume
3205 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3207 * Instructs mac80211 to disconnect from the AP after resume.
3208 * Drivers can use this after WoWLAN if they know that the
3209 * connection cannot be kept up, for example because keys were
3210 * used while the device was asleep but the replay counters or
3211 * similar cannot be retrieved from the device during resume.
3213 * Note that due to implementation issues, if the driver uses
3214 * the reconfiguration functionality during resume the interface
3215 * will still be added as associated first during resume and then
3216 * disconnect normally later.
3218 * This function can only be called from the resume callback and
3219 * the driver must not be holding any of its own locks while it
3220 * calls this function, or at least not any locks it needs in the
3221 * key configuration paths (if it supports HW crypto).
3223 void ieee80211_resume_disconnect(struct ieee80211_vif
*vif
);
3226 * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm
3228 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3230 * Some hardware require full power save to manage simultaneous BT traffic
3231 * on the WLAN frequency. Full PSM is required periodically, whenever there are
3232 * burst of BT traffic. The hardware gets information of BT traffic via
3233 * hardware co-existence lines, and consequentially requests mac80211 to
3234 * (temporarily) enter full psm.
3235 * This function will only temporarily disable dynamic PS, not enable PSM if
3236 * it was not already enabled.
3237 * The driver must make sure to re-enable dynamic PS using
3238 * ieee80211_enable_dyn_ps() if the driver has disabled it.
3241 void ieee80211_disable_dyn_ps(struct ieee80211_vif
*vif
);
3244 * ieee80211_enable_dyn_ps - restore dynamic psm after being disabled
3246 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3248 * This function restores dynamic PS after being temporarily disabled via
3249 * ieee80211_disable_dyn_ps(). Each ieee80211_disable_dyn_ps() call must
3250 * be coupled with an eventual call to this function.
3253 void ieee80211_enable_dyn_ps(struct ieee80211_vif
*vif
);
3256 * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring
3257 * rssi threshold triggered
3259 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3260 * @rssi_event: the RSSI trigger event type
3261 * @gfp: context flags
3263 * When the %IEEE80211_HW_SUPPORTS_CQM_RSSI is set, and a connection quality
3264 * monitoring is configured with an rssi threshold, the driver will inform
3265 * whenever the rssi level reaches the threshold.
3267 void ieee80211_cqm_rssi_notify(struct ieee80211_vif
*vif
,
3268 enum nl80211_cqm_rssi_threshold_event rssi_event
,
3272 * ieee80211_get_operstate - get the operstate of the vif
3274 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3276 * The driver might need to know the operstate of the net_device
3277 * (specifically, whether the link is IF_OPER_UP after resume)
3279 unsigned char ieee80211_get_operstate(struct ieee80211_vif
*vif
);
3282 * ieee80211_chswitch_done - Complete channel switch process
3283 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3284 * @success: make the channel switch successful or not
3286 * Complete the channel switch post-process: set the new operational channel
3287 * and wake up the suspended queues.
3289 void ieee80211_chswitch_done(struct ieee80211_vif
*vif
, bool success
);
3292 * ieee80211_request_smps - request SM PS transition
3293 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3294 * @smps_mode: new SM PS mode
3296 * This allows the driver to request an SM PS transition in managed
3297 * mode. This is useful when the driver has more information than
3298 * the stack about possible interference, for example by bluetooth.
3300 void ieee80211_request_smps(struct ieee80211_vif
*vif
,
3301 enum ieee80211_smps_mode smps_mode
);
3304 * ieee80211_key_removed - disable hw acceleration for key
3305 * @key_conf: The key hw acceleration should be disabled for
3307 * This allows drivers to indicate that the given key has been
3308 * removed from hardware acceleration, due to a new key that
3309 * was added. Don't use this if the key can continue to be used
3310 * for TX, if the key restriction is on RX only it is permitted
3311 * to keep the key for TX only and not call this function.
3313 * Due to locking constraints, it may only be called during
3314 * @set_key. This function must be allowed to sleep, and the
3315 * key it tries to disable may still be used until it returns.
3317 void ieee80211_key_removed(struct ieee80211_key_conf
*key_conf
);
3320 * ieee80211_ready_on_channel - notification of remain-on-channel start
3321 * @hw: pointer as obtained from ieee80211_alloc_hw()
3323 void ieee80211_ready_on_channel(struct ieee80211_hw
*hw
);
3326 * ieee80211_remain_on_channel_expired - remain_on_channel duration expired
3327 * @hw: pointer as obtained from ieee80211_alloc_hw()
3329 void ieee80211_remain_on_channel_expired(struct ieee80211_hw
*hw
);
3332 * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions
3334 * in order not to harm the system performance and user experience, the device
3335 * may request not to allow any rx ba session and tear down existing rx ba
3336 * sessions based on system constraints such as periodic BT activity that needs
3337 * to limit wlan activity (eg.sco or a2dp)."
3338 * in such cases, the intention is to limit the duration of the rx ppdu and
3339 * therefore prevent the peer device to use a-mpdu aggregation.
3341 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3342 * @ba_rx_bitmap: Bit map of open rx ba per tid
3343 * @addr: & to bssid mac address
3345 void ieee80211_stop_rx_ba_session(struct ieee80211_vif
*vif
, u16 ba_rx_bitmap
,
3349 * ieee80211_send_bar - send a BlockAckReq frame
3351 * can be used to flush pending frames from the peer's aggregation reorder
3354 * @vif: &struct ieee80211_vif pointer from the add_interface callback.
3355 * @ra: the peer's destination address
3356 * @tid: the TID of the aggregation session
3357 * @ssn: the new starting sequence number for the receiver
3359 void ieee80211_send_bar(struct ieee80211_vif
*vif
, u8
*ra
, u16 tid
, u16 ssn
);
3361 /* Rate control API */
3364 * enum rate_control_changed - flags to indicate which parameter changed
3366 * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have
3367 * changed, rate control algorithm can update its internal state if needed.
3369 enum rate_control_changed
{
3370 IEEE80211_RC_HT_CHANGED
= BIT(0)
3374 * struct ieee80211_tx_rate_control - rate control information for/from RC algo
3376 * @hw: The hardware the algorithm is invoked for.
3377 * @sband: The band this frame is being transmitted on.
3378 * @bss_conf: the current BSS configuration
3379 * @reported_rate: The rate control algorithm can fill this in to indicate
3380 * which rate should be reported to userspace as the current rate and
3381 * used for rate calculations in the mesh network.
3382 * @rts: whether RTS will be used for this frame because it is longer than the
3384 * @short_preamble: whether mac80211 will request short-preamble transmission
3385 * if the selected rate supports it
3386 * @max_rate_idx: user-requested maximum rate (not MCS for now)
3387 * (deprecated; this will be removed once drivers get updated to use
3389 * @rate_idx_mask: user-requested rate mask (not MCS for now)
3390 * @skb: the skb that will be transmitted, the control information in it needs
3392 * @bss: whether this frame is sent out in AP or IBSS mode
3394 struct ieee80211_tx_rate_control
{
3395 struct ieee80211_hw
*hw
;
3396 struct ieee80211_supported_band
*sband
;
3397 struct ieee80211_bss_conf
*bss_conf
;
3398 struct sk_buff
*skb
;
3399 struct ieee80211_tx_rate reported_rate
;
3400 bool rts
, short_preamble
;
3406 struct rate_control_ops
{
3407 struct module
*module
;
3409 void *(*alloc
)(struct ieee80211_hw
*hw
, struct dentry
*debugfsdir
);
3410 void (*free
)(void *priv
);
3412 void *(*alloc_sta
)(void *priv
, struct ieee80211_sta
*sta
, gfp_t gfp
);
3413 void (*rate_init
)(void *priv
, struct ieee80211_supported_band
*sband
,
3414 struct ieee80211_sta
*sta
, void *priv_sta
);
3415 void (*rate_update
)(void *priv
, struct ieee80211_supported_band
*sband
,
3416 struct ieee80211_sta
*sta
,
3417 void *priv_sta
, u32 changed
,
3418 enum nl80211_channel_type oper_chan_type
);
3419 void (*free_sta
)(void *priv
, struct ieee80211_sta
*sta
,
3422 void (*tx_status
)(void *priv
, struct ieee80211_supported_band
*sband
,
3423 struct ieee80211_sta
*sta
, void *priv_sta
,
3424 struct sk_buff
*skb
);
3425 void (*get_rate
)(void *priv
, struct ieee80211_sta
*sta
, void *priv_sta
,
3426 struct ieee80211_tx_rate_control
*txrc
);
3428 void (*add_sta_debugfs
)(void *priv
, void *priv_sta
,
3429 struct dentry
*dir
);
3430 void (*remove_sta_debugfs
)(void *priv
, void *priv_sta
);
3433 static inline int rate_supported(struct ieee80211_sta
*sta
,
3434 enum ieee80211_band band
,
3437 return (sta
== NULL
|| sta
->supp_rates
[band
] & BIT(index
));
3441 * rate_control_send_low - helper for drivers for management/no-ack frames
3443 * Rate control algorithms that agree to use the lowest rate to
3444 * send management frames and NO_ACK data with the respective hw
3445 * retries should use this in the beginning of their mac80211 get_rate
3446 * callback. If true is returned the rate control can simply return.
3447 * If false is returned we guarantee that sta and sta and priv_sta is
3450 * Rate control algorithms wishing to do more intelligent selection of
3451 * rate for multicast/broadcast frames may choose to not use this.
3453 * @sta: &struct ieee80211_sta pointer to the target destination. Note
3454 * that this may be null.
3455 * @priv_sta: private rate control structure. This may be null.
3456 * @txrc: rate control information we sholud populate for mac80211.
3458 bool rate_control_send_low(struct ieee80211_sta
*sta
,
3460 struct ieee80211_tx_rate_control
*txrc
);
3464 rate_lowest_index(struct ieee80211_supported_band
*sband
,
3465 struct ieee80211_sta
*sta
)
3469 for (i
= 0; i
< sband
->n_bitrates
; i
++)
3470 if (rate_supported(sta
, sband
->band
, i
))
3473 /* warn when we cannot find a rate. */
3480 bool rate_usable_index_exists(struct ieee80211_supported_band
*sband
,
3481 struct ieee80211_sta
*sta
)
3485 for (i
= 0; i
< sband
->n_bitrates
; i
++)
3486 if (rate_supported(sta
, sband
->band
, i
))
3491 int ieee80211_rate_control_register(struct rate_control_ops
*ops
);
3492 void ieee80211_rate_control_unregister(struct rate_control_ops
*ops
);
3495 conf_is_ht20(struct ieee80211_conf
*conf
)
3497 return conf
->channel_type
== NL80211_CHAN_HT20
;
3501 conf_is_ht40_minus(struct ieee80211_conf
*conf
)
3503 return conf
->channel_type
== NL80211_CHAN_HT40MINUS
;
3507 conf_is_ht40_plus(struct ieee80211_conf
*conf
)
3509 return conf
->channel_type
== NL80211_CHAN_HT40PLUS
;
3513 conf_is_ht40(struct ieee80211_conf
*conf
)
3515 return conf_is_ht40_minus(conf
) || conf_is_ht40_plus(conf
);
3519 conf_is_ht(struct ieee80211_conf
*conf
)
3521 return conf
->channel_type
!= NL80211_CHAN_NO_HT
;
3524 static inline enum nl80211_iftype
3525 ieee80211_iftype_p2p(enum nl80211_iftype type
, bool p2p
)
3529 case NL80211_IFTYPE_STATION
:
3530 return NL80211_IFTYPE_P2P_CLIENT
;
3531 case NL80211_IFTYPE_AP
:
3532 return NL80211_IFTYPE_P2P_GO
;
3540 static inline enum nl80211_iftype
3541 ieee80211_vif_type_p2p(struct ieee80211_vif
*vif
)
3543 return ieee80211_iftype_p2p(vif
->type
, vif
->p2p
);
3546 void ieee80211_enable_rssi_reports(struct ieee80211_vif
*vif
,
3548 int rssi_max_thold
);
3550 void ieee80211_disable_rssi_reports(struct ieee80211_vif
*vif
);
3552 int ieee80211_add_srates_ie(struct ieee80211_vif
*vif
, struct sk_buff
*skb
);
3554 int ieee80211_add_ext_srates_ie(struct ieee80211_vif
*vif
,
3555 struct sk_buff
*skb
);
3556 #endif /* MAC80211_H */