2 * Copyright 2002-2005, Devicescape Software, Inc.
3 * Copyright 2013-2014 Intel Mobile Communications GmbH
4 * Copyright(c) 2015 Intel Deutschland GmbH
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
14 #include <linux/list.h>
15 #include <linux/types.h>
16 #include <linux/if_ether.h>
17 #include <linux/workqueue.h>
18 #include <linux/average.h>
19 #include <linux/etherdevice.h>
20 #include <linux/rhashtable.h>
24 * enum ieee80211_sta_info_flags - Stations flags
26 * These flags are used with &struct sta_info's @flags member, but
27 * only indirectly with set_sta_flag() and friends.
29 * @WLAN_STA_AUTH: Station is authenticated.
30 * @WLAN_STA_ASSOC: Station is associated.
31 * @WLAN_STA_PS_STA: Station is in power-save mode
32 * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic.
33 * This bit is always checked so needs to be enabled for all stations
34 * when virtual port control is not in use.
35 * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
37 * @WLAN_STA_WDS: Station is one of our WDS peers.
38 * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
39 * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
40 * frame to this station is transmitted.
41 * @WLAN_STA_MFP: Management frame protection is used with this STA.
42 * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
43 * during suspend/resume and station removal.
44 * @WLAN_STA_PS_DRIVER: driver requires keeping this station in
45 * power-save mode logically to flush frames that might still
47 * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
48 * station in power-save mode, reply when the driver unblocks.
49 * @WLAN_STA_TDLS_PEER: Station is a TDLS peer.
50 * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct
51 * packets. This means the link is enabled.
52 * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this
54 * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching
55 * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this
57 * @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on
58 * the BSS base channel.
59 * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
60 * keeping station in power-save mode, reply when the driver
61 * unblocks the station.
62 * @WLAN_STA_SP: Station is in a service period, so don't try to
63 * reply to other uAPSD trigger frames or PS-Poll.
64 * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame.
65 * @WLAN_STA_INSERTED: This station is inserted into the hash table.
66 * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station.
67 * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid.
68 * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period.
69 * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP.
70 * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX
71 * until pending frames are delivered
73 enum ieee80211_sta_info_flags
{
78 WLAN_STA_SHORT_PREAMBLE
,
80 WLAN_STA_CLEAR_PS_FILT
,
86 WLAN_STA_TDLS_PEER_AUTH
,
87 WLAN_STA_TDLS_INITIATOR
,
88 WLAN_STA_TDLS_CHAN_SWITCH
,
89 WLAN_STA_TDLS_OFF_CHANNEL
,
90 WLAN_STA_TDLS_WIDER_BW
,
95 WLAN_STA_RATE_CONTROL
,
96 WLAN_STA_TOFFSET_KNOWN
,
98 WLAN_STA_MPSP_RECIPIENT
,
102 #define ADDBA_RESP_INTERVAL HZ
103 #define HT_AGG_MAX_RETRIES 15
104 #define HT_AGG_BURST_RETRIES 3
105 #define HT_AGG_RETRIES_PERIOD (15 * HZ)
107 #define HT_AGG_STATE_DRV_READY 0
108 #define HT_AGG_STATE_RESPONSE_RECEIVED 1
109 #define HT_AGG_STATE_OPERATIONAL 2
110 #define HT_AGG_STATE_STOPPING 3
111 #define HT_AGG_STATE_WANT_START 4
112 #define HT_AGG_STATE_WANT_STOP 5
114 enum ieee80211_agg_stop_reason
{
116 AGG_STOP_LOCAL_REQUEST
,
117 AGG_STOP_PEER_REQUEST
,
118 AGG_STOP_DESTROY_STA
,
122 * struct tid_ampdu_tx - TID aggregation information (Tx).
124 * @rcu_head: rcu head for freeing structure
125 * @session_timer: check if we keep Tx-ing on the TID (by timeout value)
126 * @addba_resp_timer: timer for peer's response to addba request
127 * @pending: pending frames queue -- use sta's spinlock to protect
128 * @dialog_token: dialog token for aggregation session
129 * @timeout: session timeout value to be filled in ADDBA requests
130 * @state: session state (see above)
131 * @last_tx: jiffies of last tx activity
132 * @stop_initiator: initiator of a session stop
133 * @tx_stop: TX DelBA frame when stopping
134 * @buf_size: reorder buffer size at receiver
135 * @failed_bar_ssn: ssn of the last failed BAR tx attempt
136 * @bar_pending: BAR needs to be re-sent
137 * @amsdu: support A-MSDU withing A-MDPU
139 * This structure's lifetime is managed by RCU, assignments to
140 * the array holding it must hold the aggregation mutex.
142 * The TX path can access it under RCU lock-free if, and
143 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
144 * set. Otherwise, the TX path must also acquire the spinlock
145 * and re-check the state, see comments in the tx code
148 struct tid_ampdu_tx
{
149 struct rcu_head rcu_head
;
150 struct timer_list session_timer
;
151 struct timer_list addba_resp_timer
;
152 struct sk_buff_head pending
;
154 unsigned long last_tx
;
167 * struct tid_ampdu_rx - TID aggregation information (Rx).
169 * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
170 * A-MSDU with individually reported subframes.
171 * @reorder_buf_filtered: bitmap indicating where there are filtered frames in
172 * the reorder buffer that should be ignored when releasing frames
173 * @reorder_time: jiffies when skb was added
174 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
175 * @reorder_timer: releases expired frames from the reorder buffer.
176 * @last_rx: jiffies of last rx activity
177 * @head_seq_num: head sequence number in reordering buffer.
178 * @stored_mpdu_num: number of MPDUs in reordering buffer
179 * @ssn: Starting Sequence Number expected to be aggregated.
180 * @buf_size: buffer size for incoming A-MPDUs
181 * @timeout: reset timer value (in TUs).
182 * @dialog_token: dialog token for aggregation session
183 * @rcu_head: RCU head used for freeing this struct
184 * @reorder_lock: serializes access to reorder buffer, see below.
185 * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
187 * @removed: this session is removed (but might have been found due to RCU)
189 * This structure's lifetime is managed by RCU, assignments to
190 * the array holding it must hold the aggregation mutex.
192 * The @reorder_lock is used to protect the members of this
193 * struct, except for @timeout, @buf_size and @dialog_token,
194 * which are constant across the lifetime of the struct (the
195 * dialog token being used only for debugging).
197 struct tid_ampdu_rx
{
198 struct rcu_head rcu_head
;
199 spinlock_t reorder_lock
;
200 u64 reorder_buf_filtered
;
201 struct sk_buff_head
*reorder_buf
;
202 unsigned long *reorder_time
;
203 struct timer_list session_timer
;
204 struct timer_list reorder_timer
;
205 unsigned long last_rx
;
217 * struct sta_ampdu_mlme - STA aggregation information.
219 * @mtx: mutex to protect all TX data (except non-NULL assignments
220 * to tid_tx[idx], which are protected by the sta spinlock)
221 * tid_start_tx is also protected by sta->lock.
222 * @tid_rx: aggregation info for Rx per TID -- RCU protected
223 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
224 * RX timer expired until the work for it runs
225 * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the
226 * driver requested to close until the work for it runs
227 * @agg_session_valid: bitmap indicating which TID has a rx BA session open on
228 * @work: work struct for starting/stopping aggregation
229 * @tid_tx: aggregation info for Tx per TID
230 * @tid_start_tx: sessions where start was requested
231 * @last_addba_req_time: timestamp of the last addBA request.
232 * @addba_req_num: number of times addBA request has been sent.
233 * @dialog_token_allocator: dialog token enumerator for each new session;
235 struct sta_ampdu_mlme
{
238 struct tid_ampdu_rx __rcu
*tid_rx
[IEEE80211_NUM_TIDS
];
239 unsigned long tid_rx_timer_expired
[BITS_TO_LONGS(IEEE80211_NUM_TIDS
)];
240 unsigned long tid_rx_stop_requested
[BITS_TO_LONGS(IEEE80211_NUM_TIDS
)];
241 unsigned long agg_session_valid
[BITS_TO_LONGS(IEEE80211_NUM_TIDS
)];
243 struct work_struct work
;
244 struct tid_ampdu_tx __rcu
*tid_tx
[IEEE80211_NUM_TIDS
];
245 struct tid_ampdu_tx
*tid_start_tx
[IEEE80211_NUM_TIDS
];
246 unsigned long last_addba_req_time
[IEEE80211_NUM_TIDS
];
247 u8 addba_req_num
[IEEE80211_NUM_TIDS
];
248 u8 dialog_token_allocator
;
252 /* Value to indicate no TID reservation */
253 #define IEEE80211_TID_UNRESERVED 0xff
255 #define IEEE80211_FAST_XMIT_MAX_IV 18
258 * struct ieee80211_fast_tx - TX fastpath information
259 * @key: key to use for hw crypto
260 * @hdr: the 802.11 header to put with the frame
261 * @hdr_len: actual 802.11 header length
262 * @sa_offs: offset of the SA
263 * @da_offs: offset of the DA
264 * @pn_offs: offset where to put PN for crypto (or 0 if not needed)
265 * @band: band this will be transmitted on, for tx_info
266 * @rcu_head: RCU head to free this struct
268 * This struct is small enough so that the common case (maximum crypto
269 * header length of 8 like for CCMP/GCMP) fits into a single 64-byte
272 struct ieee80211_fast_tx
{
273 struct ieee80211_key
*key
;
275 u8 sa_offs
, da_offs
, pn_offs
;
277 u8 hdr
[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV
+
278 sizeof(rfc1042_header
)];
280 struct rcu_head rcu_head
;
284 * struct mesh_sta - mesh STA information
285 * @plink_lock: serialize access to plink fields
286 * @llid: Local link ID
287 * @plid: Peer link ID
288 * @aid: local aid supplied by peer
289 * @reason: Cancel reason on PLINK_HOLDING state
290 * @plink_retries: Retries in establishment
291 * @plink_state: peer link state
292 * @plink_timeout: timeout of peer link
293 * @plink_timer: peer link watch timer
294 * @t_offset: timing offset relative to this host
295 * @t_offset_setpoint: reference timing offset of this sta to be used when
296 * calculating clockdrift
297 * @local_pm: local link-specific power save mode
298 * @peer_pm: peer-specific power save mode towards local STA
299 * @nonpeer_pm: STA power save mode towards non-peer neighbors
300 * @processed_beacon: set to true after peer rates and capabilities are
302 * @fail_avg: moving percentage of failed MSDUs
305 struct timer_list plink_timer
;
308 s64 t_offset_setpoint
;
310 spinlock_t plink_lock
;
317 bool processed_beacon
;
319 enum nl80211_plink_state plink_state
;
322 /* mesh power save */
323 enum nl80211_mesh_power_mode local_pm
;
324 enum nl80211_mesh_power_mode peer_pm
;
325 enum nl80211_mesh_power_mode nonpeer_pm
;
327 /* moving percentage of failed MSDUs */
328 unsigned int fail_avg
;
331 DECLARE_EWMA(signal
, 1024, 8)
334 * struct sta_info - STA information
336 * This structure collects information about a station that
337 * mac80211 is communicating with.
339 * @list: global linked list entry
340 * @free_list: list entry for keeping track of stations to free
341 * @hash_node: hash node for rhashtable
342 * @addr: station's MAC address - duplicated from public part to
343 * let the hash table work with just a single cacheline
344 * @local: pointer to the global information
345 * @sdata: virtual interface this station belongs to
346 * @ptk: peer keys negotiated with this station, if any
347 * @ptk_idx: last installed peer key index
348 * @gtk: group keys negotiated with this station, if any
349 * @rate_ctrl: rate control algorithm reference
350 * @rate_ctrl_lock: spinlock used to protect rate control data
351 * (data inside the algorithm, so serializes calls there)
352 * @rate_ctrl_priv: rate control private per-STA pointer
353 * @lock: used for locking all fields that require locking, see comments
354 * in the header file.
355 * @drv_deliver_wk: used for delivering frames after driver PS unblocking
356 * @listen_interval: listen interval of this station, when we're acting as AP
357 * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
358 * @ps_lock: used for powersave (when mac80211 is the AP) related locking
359 * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
360 * when it leaves power saving state or polls
361 * @tx_filtered: buffers (per AC) of frames we already tried to
362 * transmit but were filtered by hardware due to STA having
363 * entered power saving state, these are also delivered to
364 * the station when it leaves powersave or polls for frames
365 * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
366 * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
367 * @last_connected: time (in seconds) when a station got connected
368 * @last_seq_ctrl: last received seq/frag number from this STA (per TID
369 * plus one for non-QoS frames)
370 * @tid_seq: per-TID sequence numbers for sending to this STA
371 * @ampdu_mlme: A-MPDU state machine state
372 * @timer_to_tid: identity mapping to ID timers
373 * @mesh: mesh STA information
374 * @debugfs: debug filesystem info
375 * @dead: set to true when sta is unlinked
376 * @removed: set to true when sta is being removed from sta_list
377 * @uploaded: set to true when sta is uploaded to the driver
378 * @sta: station information we share with the driver
379 * @sta_state: duplicates information about station state (for debug)
380 * @beacon_loss_count: number of times beacon loss has triggered
381 * @rcu_head: RCU head used for freeing this station struct
382 * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
383 * taken from HT/VHT capabilities or VHT operating mode notification
384 * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
386 * @cipher_scheme: optional cipher scheme for this station
387 * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
388 * @fast_tx: TX fastpath information
389 * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
391 * @tx_stats: TX statistics
392 * @rx_stats: RX statistics
393 * @status_stats: TX status statistics
396 /* General information, mostly static */
397 struct list_head list
, free_list
;
398 struct rcu_head rcu_head
;
399 struct rhash_head hash_node
;
401 struct ieee80211_local
*local
;
402 struct ieee80211_sub_if_data
*sdata
;
403 struct ieee80211_key __rcu
*gtk
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
404 struct ieee80211_key __rcu
*ptk
[NUM_DEFAULT_KEYS
];
406 struct rate_control_ref
*rate_ctrl
;
407 void *rate_ctrl_priv
;
408 spinlock_t rate_ctrl_lock
;
411 struct ieee80211_fast_tx __rcu
*fast_tx
;
413 #ifdef CONFIG_MAC80211_MESH
414 struct mesh_sta
*mesh
;
417 struct work_struct drv_deliver_wk
;
426 enum ieee80211_sta_state sta_state
;
428 /* use the accessors defined below */
429 unsigned long _flags
;
431 /* STA powersave lock and frame queues */
433 struct sk_buff_head ps_tx_buf
[IEEE80211_NUM_ACS
];
434 struct sk_buff_head tx_filtered
[IEEE80211_NUM_ACS
];
435 unsigned long driver_buffered_tids
;
436 unsigned long txq_buffered_tids
;
440 /* Updated from RX path only, no locking requirements */
442 unsigned long packets
;
444 unsigned long last_rx
;
445 unsigned long num_duplicates
;
446 unsigned long fragments
;
447 unsigned long dropped
;
449 struct ewma_signal avg_signal
;
451 s8 chain_signal_last
[IEEE80211_MAX_CHAINS
];
452 struct ewma_signal chain_signal_avg
[IEEE80211_MAX_CHAINS
];
455 u32 last_rate_vht_flag
;
456 u8 last_rate_vht_nss
;
457 u64 msdu
[IEEE80211_NUM_TIDS
+ 1];
460 /* Plus 1 for non-QoS frames */
461 __le16 last_seq_ctrl
[IEEE80211_NUM_TIDS
+ 1];
463 /* Updated from TX status path only, no locking requirements */
465 unsigned long filtered
;
466 unsigned long retry_failed
, retry_count
;
467 unsigned int lost_packets
;
468 unsigned long last_tdls_pkt_time
;
469 u64 msdu_retries
[IEEE80211_NUM_TIDS
+ 1];
470 u64 msdu_failed
[IEEE80211_NUM_TIDS
+ 1];
473 /* Updated from TX path only, no locking requirements */
475 u64 packets
[IEEE80211_NUM_ACS
];
476 u64 bytes
[IEEE80211_NUM_ACS
];
477 struct ieee80211_tx_rate last_rate
;
478 u64 msdu
[IEEE80211_NUM_TIDS
+ 1];
480 u16 tid_seq
[IEEE80211_QOS_CTL_TID_MASK
+ 1];
483 * Aggregation information, locked with lock.
485 struct sta_ampdu_mlme ampdu_mlme
;
486 u8 timer_to_tid
[IEEE80211_NUM_TIDS
];
488 #ifdef CONFIG_MAC80211_DEBUGFS
489 struct sta_info_debugfsdentries
{
495 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth
;
497 enum ieee80211_smps_mode known_smps_mode
;
498 const struct ieee80211_cipher_scheme
*cipher_scheme
;
502 struct cfg80211_chan_def tdls_chandef
;
505 struct ieee80211_sta sta
;
508 static inline enum nl80211_plink_state
sta_plink_state(struct sta_info
*sta
)
510 #ifdef CONFIG_MAC80211_MESH
511 return sta
->mesh
->plink_state
;
513 return NL80211_PLINK_LISTEN
;
516 static inline void set_sta_flag(struct sta_info
*sta
,
517 enum ieee80211_sta_info_flags flag
)
519 WARN_ON(flag
== WLAN_STA_AUTH
||
520 flag
== WLAN_STA_ASSOC
||
521 flag
== WLAN_STA_AUTHORIZED
);
522 set_bit(flag
, &sta
->_flags
);
525 static inline void clear_sta_flag(struct sta_info
*sta
,
526 enum ieee80211_sta_info_flags flag
)
528 WARN_ON(flag
== WLAN_STA_AUTH
||
529 flag
== WLAN_STA_ASSOC
||
530 flag
== WLAN_STA_AUTHORIZED
);
531 clear_bit(flag
, &sta
->_flags
);
534 static inline int test_sta_flag(struct sta_info
*sta
,
535 enum ieee80211_sta_info_flags flag
)
537 return test_bit(flag
, &sta
->_flags
);
540 static inline int test_and_clear_sta_flag(struct sta_info
*sta
,
541 enum ieee80211_sta_info_flags flag
)
543 WARN_ON(flag
== WLAN_STA_AUTH
||
544 flag
== WLAN_STA_ASSOC
||
545 flag
== WLAN_STA_AUTHORIZED
);
546 return test_and_clear_bit(flag
, &sta
->_flags
);
549 static inline int test_and_set_sta_flag(struct sta_info
*sta
,
550 enum ieee80211_sta_info_flags flag
)
552 WARN_ON(flag
== WLAN_STA_AUTH
||
553 flag
== WLAN_STA_ASSOC
||
554 flag
== WLAN_STA_AUTHORIZED
);
555 return test_and_set_bit(flag
, &sta
->_flags
);
558 int sta_info_move_state(struct sta_info
*sta
,
559 enum ieee80211_sta_state new_state
);
561 static inline void sta_info_pre_move_state(struct sta_info
*sta
,
562 enum ieee80211_sta_state new_state
)
566 WARN_ON_ONCE(test_sta_flag(sta
, WLAN_STA_INSERTED
));
568 ret
= sta_info_move_state(sta
, new_state
);
573 void ieee80211_assign_tid_tx(struct sta_info
*sta
, int tid
,
574 struct tid_ampdu_tx
*tid_tx
);
576 static inline struct tid_ampdu_tx
*
577 rcu_dereference_protected_tid_tx(struct sta_info
*sta
, int tid
)
579 return rcu_dereference_protected(sta
->ampdu_mlme
.tid_tx
[tid
],
580 lockdep_is_held(&sta
->lock
) ||
581 lockdep_is_held(&sta
->ampdu_mlme
.mtx
));
584 /* Maximum number of frames to buffer per power saving station per AC */
585 #define STA_MAX_TX_BUFFER 64
587 /* Minimum buffered frame expiry time. If STA uses listen interval that is
588 * smaller than this value, the minimum value here is used instead. */
589 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
591 /* How often station data is cleaned up (e.g., expiration of buffered frames)
593 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
596 * Get a STA info, must be under RCU read lock.
598 struct sta_info
*sta_info_get(struct ieee80211_sub_if_data
*sdata
,
601 struct sta_info
*sta_info_get_bss(struct ieee80211_sub_if_data
*sdata
,
604 u32
sta_addr_hash(const void *key
, u32 length
, u32 seed
);
606 #define _sta_bucket_idx(_tbl, _a) \
607 rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd))
609 #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \
610 rht_for_each_entry_rcu(_sta, _tmp, tbl, \
611 _sta_bucket_idx(tbl, _addr), \
613 /* compare address and run code only if it matches */ \
614 if (ether_addr_equal(_sta->addr, (_addr)))
617 * Get STA info by index, BROKEN!
619 struct sta_info
*sta_info_get_by_idx(struct ieee80211_sub_if_data
*sdata
,
622 * Create a new STA info, caller owns returned structure
623 * until sta_info_insert().
625 struct sta_info
*sta_info_alloc(struct ieee80211_sub_if_data
*sdata
,
626 const u8
*addr
, gfp_t gfp
);
628 void sta_info_free(struct ieee80211_local
*local
, struct sta_info
*sta
);
631 * Insert STA info into hash table/list, returns zero or a
632 * -EEXIST if (if the same MAC address is already present).
634 * Calling the non-rcu version makes the caller relinquish,
635 * the _rcu version calls read_lock_rcu() and must be called
638 int sta_info_insert(struct sta_info
*sta
);
639 int sta_info_insert_rcu(struct sta_info
*sta
) __acquires(RCU
);
641 int __must_check
__sta_info_destroy(struct sta_info
*sta
);
642 int sta_info_destroy_addr(struct ieee80211_sub_if_data
*sdata
,
644 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data
*sdata
,
647 void sta_info_recalc_tim(struct sta_info
*sta
);
649 int sta_info_init(struct ieee80211_local
*local
);
650 void sta_info_stop(struct ieee80211_local
*local
);
653 * sta_info_flush - flush matching STA entries from the STA table
655 * Returns the number of removed STA entries.
657 * @sdata: sdata to remove all stations from
658 * @vlans: if the given interface is an AP interface, also flush VLANs
660 int __sta_info_flush(struct ieee80211_sub_if_data
*sdata
, bool vlans
);
662 static inline int sta_info_flush(struct ieee80211_sub_if_data
*sdata
)
664 return __sta_info_flush(sdata
, false);
667 void sta_set_rate_info_tx(struct sta_info
*sta
,
668 const struct ieee80211_tx_rate
*rate
,
669 struct rate_info
*rinfo
);
670 void sta_set_sinfo(struct sta_info
*sta
, struct station_info
*sinfo
);
672 void ieee80211_sta_expire(struct ieee80211_sub_if_data
*sdata
,
673 unsigned long exp_time
);
674 u8
sta_info_tx_streams(struct sta_info
*sta
);
676 void ieee80211_sta_ps_deliver_wakeup(struct sta_info
*sta
);
677 void ieee80211_sta_ps_deliver_poll_response(struct sta_info
*sta
);
678 void ieee80211_sta_ps_deliver_uapsd(struct sta_info
*sta
);
680 #endif /* STA_INFO_H */