2 * Copyright 2002-2005, Devicescape Software, Inc.
3 * Copyright 2013-2014 Intel Mobile Communications GmbH
4 * Copyright(c) 2015-2016 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 * @NUM_WLAN_STA_FLAGS: number of defined flags
75 enum ieee80211_sta_info_flags {
80 WLAN_STA_SHORT_PREAMBLE,
82 WLAN_STA_CLEAR_PS_FILT,
88 WLAN_STA_TDLS_PEER_AUTH,
89 WLAN_STA_TDLS_INITIATOR,
90 WLAN_STA_TDLS_CHAN_SWITCH,
91 WLAN_STA_TDLS_OFF_CHANNEL,
92 WLAN_STA_TDLS_WIDER_BW,
97 WLAN_STA_RATE_CONTROL,
98 WLAN_STA_TOFFSET_KNOWN,
100 WLAN_STA_MPSP_RECIPIENT,
106 #define ADDBA_RESP_INTERVAL HZ
107 #define HT_AGG_MAX_RETRIES 15
108 #define HT_AGG_BURST_RETRIES 3
109 #define HT_AGG_RETRIES_PERIOD (15 * HZ)
111 #define HT_AGG_STATE_DRV_READY 0
112 #define HT_AGG_STATE_RESPONSE_RECEIVED 1
113 #define HT_AGG_STATE_OPERATIONAL 2
114 #define HT_AGG_STATE_STOPPING 3
115 #define HT_AGG_STATE_WANT_START 4
116 #define HT_AGG_STATE_WANT_STOP 5
118 enum ieee80211_agg_stop_reason {
120 AGG_STOP_LOCAL_REQUEST,
121 AGG_STOP_PEER_REQUEST,
122 AGG_STOP_DESTROY_STA,
126 * struct tid_ampdu_tx - TID aggregation information (Tx).
128 * @rcu_head: rcu head for freeing structure
129 * @session_timer: check if we keep Tx-ing on the TID (by timeout value)
130 * @addba_resp_timer: timer for peer's response to addba request
131 * @pending: pending frames queue -- use sta's spinlock to protect
132 * @dialog_token: dialog token for aggregation session
133 * @timeout: session timeout value to be filled in ADDBA requests
134 * @state: session state (see above)
135 * @last_tx: jiffies of last tx activity
136 * @stop_initiator: initiator of a session stop
137 * @tx_stop: TX DelBA frame when stopping
138 * @buf_size: reorder buffer size at receiver
139 * @failed_bar_ssn: ssn of the last failed BAR tx attempt
140 * @bar_pending: BAR needs to be re-sent
141 * @amsdu: support A-MSDU withing A-MDPU
143 * This structure's lifetime is managed by RCU, assignments to
144 * the array holding it must hold the aggregation mutex.
146 * The TX path can access it under RCU lock-free if, and
147 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
148 * set. Otherwise, the TX path must also acquire the spinlock
149 * and re-check the state, see comments in the tx code
152 struct tid_ampdu_tx {
153 struct rcu_head rcu_head;
154 struct timer_list session_timer;
155 struct timer_list addba_resp_timer;
156 struct sk_buff_head pending;
158 unsigned long last_tx;
171 * struct tid_ampdu_rx - TID aggregation information (Rx).
173 * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
174 * A-MSDU with individually reported subframes.
175 * @reorder_buf_filtered: bitmap indicating where there are filtered frames in
176 * the reorder buffer that should be ignored when releasing frames
177 * @reorder_time: jiffies when skb was added
178 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
179 * @reorder_timer: releases expired frames from the reorder buffer.
180 * @last_rx: jiffies of last rx activity
181 * @head_seq_num: head sequence number in reordering buffer.
182 * @stored_mpdu_num: number of MPDUs in reordering buffer
183 * @ssn: Starting Sequence Number expected to be aggregated.
184 * @buf_size: buffer size for incoming A-MPDUs
185 * @timeout: reset timer value (in TUs).
186 * @dialog_token: dialog token for aggregation session
187 * @rcu_head: RCU head used for freeing this struct
188 * @reorder_lock: serializes access to reorder buffer, see below.
189 * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
191 * @removed: this session is removed (but might have been found due to RCU)
193 * This structure's lifetime is managed by RCU, assignments to
194 * the array holding it must hold the aggregation mutex.
196 * The @reorder_lock is used to protect the members of this
197 * struct, except for @timeout, @buf_size and @dialog_token,
198 * which are constant across the lifetime of the struct (the
199 * dialog token being used only for debugging).
201 struct tid_ampdu_rx {
202 struct rcu_head rcu_head;
203 spinlock_t reorder_lock;
204 u64 reorder_buf_filtered;
205 struct sk_buff_head *reorder_buf;
206 unsigned long *reorder_time;
207 struct timer_list session_timer;
208 struct timer_list reorder_timer;
209 unsigned long last_rx;
221 * struct sta_ampdu_mlme - STA aggregation information.
223 * @mtx: mutex to protect all TX data (except non-NULL assignments
224 * to tid_tx[idx], which are protected by the sta spinlock)
225 * tid_start_tx is also protected by sta->lock.
226 * @tid_rx: aggregation info for Rx per TID -- RCU protected
227 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
228 * RX timer expired until the work for it runs
229 * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the
230 * driver requested to close until the work for it runs
231 * @agg_session_valid: bitmap indicating which TID has a rx BA session open on
232 * @work: work struct for starting/stopping aggregation
233 * @tid_tx: aggregation info for Tx per TID
234 * @tid_start_tx: sessions where start was requested
235 * @last_addba_req_time: timestamp of the last addBA request.
236 * @addba_req_num: number of times addBA request has been sent.
237 * @dialog_token_allocator: dialog token enumerator for each new session;
239 struct sta_ampdu_mlme {
242 struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS];
243 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
244 unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
245 unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
247 struct work_struct work;
248 struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS];
249 struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS];
250 unsigned long last_addba_req_time[IEEE80211_NUM_TIDS];
251 u8 addba_req_num[IEEE80211_NUM_TIDS];
252 u8 dialog_token_allocator;
256 /* Value to indicate no TID reservation */
257 #define IEEE80211_TID_UNRESERVED 0xff
259 #define IEEE80211_FAST_XMIT_MAX_IV 18
262 * struct ieee80211_fast_tx - TX fastpath information
263 * @key: key to use for hw crypto
264 * @hdr: the 802.11 header to put with the frame
265 * @hdr_len: actual 802.11 header length
266 * @sa_offs: offset of the SA
267 * @da_offs: offset of the DA
268 * @pn_offs: offset where to put PN for crypto (or 0 if not needed)
269 * @band: band this will be transmitted on, for tx_info
270 * @rcu_head: RCU head to free this struct
272 * This struct is small enough so that the common case (maximum crypto
273 * header length of 8 like for CCMP/GCMP) fits into a single 64-byte
276 struct ieee80211_fast_tx {
277 struct ieee80211_key *key;
279 u8 sa_offs, da_offs, pn_offs;
281 u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
282 sizeof(rfc1042_header)];
284 struct rcu_head rcu_head;
288 * struct mesh_sta - mesh STA information
289 * @plink_lock: serialize access to plink fields
290 * @llid: Local link ID
291 * @plid: Peer link ID
292 * @aid: local aid supplied by peer
293 * @reason: Cancel reason on PLINK_HOLDING state
294 * @plink_retries: Retries in establishment
295 * @plink_state: peer link state
296 * @plink_timeout: timeout of peer link
297 * @plink_timer: peer link watch timer
298 * @t_offset: timing offset relative to this host
299 * @t_offset_setpoint: reference timing offset of this sta to be used when
300 * calculating clockdrift
301 * @local_pm: local link-specific power save mode
302 * @peer_pm: peer-specific power save mode towards local STA
303 * @nonpeer_pm: STA power save mode towards non-peer neighbors
304 * @processed_beacon: set to true after peer rates and capabilities are
306 * @fail_avg: moving percentage of failed MSDUs
309 struct timer_list plink_timer;
312 s64 t_offset_setpoint;
314 spinlock_t plink_lock;
321 bool processed_beacon;
323 enum nl80211_plink_state plink_state;
326 /* mesh power save */
327 enum nl80211_mesh_power_mode local_pm;
328 enum nl80211_mesh_power_mode peer_pm;
329 enum nl80211_mesh_power_mode nonpeer_pm;
331 /* moving percentage of failed MSDUs */
332 unsigned int fail_avg;
335 DECLARE_EWMA(signal, 1024, 8)
338 * struct sta_info - STA information
340 * This structure collects information about a station that
341 * mac80211 is communicating with.
343 * @list: global linked list entry
344 * @free_list: list entry for keeping track of stations to free
345 * @hash_node: hash node for rhashtable
346 * @addr: station's MAC address - duplicated from public part to
347 * let the hash table work with just a single cacheline
348 * @local: pointer to the global information
349 * @sdata: virtual interface this station belongs to
350 * @ptk: peer keys negotiated with this station, if any
351 * @ptk_idx: last installed peer key index
352 * @gtk: group keys negotiated with this station, if any
353 * @rate_ctrl: rate control algorithm reference
354 * @rate_ctrl_lock: spinlock used to protect rate control data
355 * (data inside the algorithm, so serializes calls there)
356 * @rate_ctrl_priv: rate control private per-STA pointer
357 * @lock: used for locking all fields that require locking, see comments
358 * in the header file.
359 * @drv_deliver_wk: used for delivering frames after driver PS unblocking
360 * @listen_interval: listen interval of this station, when we're acting as AP
361 * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
362 * @ps_lock: used for powersave (when mac80211 is the AP) related locking
363 * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
364 * when it leaves power saving state or polls
365 * @tx_filtered: buffers (per AC) of frames we already tried to
366 * transmit but were filtered by hardware due to STA having
367 * entered power saving state, these are also delivered to
368 * the station when it leaves powersave or polls for frames
369 * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
370 * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
371 * @last_connected: time (in seconds) when a station got connected
372 * @last_seq_ctrl: last received seq/frag number from this STA (per TID
373 * plus one for non-QoS frames)
374 * @tid_seq: per-TID sequence numbers for sending to this STA
375 * @ampdu_mlme: A-MPDU state machine state
376 * @timer_to_tid: identity mapping to ID timers
377 * @mesh: mesh STA information
378 * @debugfs_dir: debug filesystem directory dentry
379 * @dead: set to true when sta is unlinked
380 * @removed: set to true when sta is being removed from sta_list
381 * @uploaded: set to true when sta is uploaded to the driver
382 * @sta: station information we share with the driver
383 * @sta_state: duplicates information about station state (for debug)
384 * @beacon_loss_count: number of times beacon loss has triggered
385 * @rcu_head: RCU head used for freeing this station struct
386 * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
387 * taken from HT/VHT capabilities or VHT operating mode notification
388 * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
390 * @cipher_scheme: optional cipher scheme for this station
391 * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
392 * @fast_tx: TX fastpath information
393 * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
395 * @tx_stats: TX statistics
396 * @rx_stats: RX statistics
397 * @status_stats: TX status statistics
400 /* General information, mostly static */
401 struct list_head list, free_list;
402 struct rcu_head rcu_head;
403 struct rhash_head hash_node;
405 struct ieee80211_local *local;
406 struct ieee80211_sub_if_data *sdata;
407 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
408 struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS];
410 struct rate_control_ref *rate_ctrl;
411 void *rate_ctrl_priv;
412 spinlock_t rate_ctrl_lock;
415 struct ieee80211_fast_tx __rcu *fast_tx;
417 #ifdef CONFIG_MAC80211_MESH
418 struct mesh_sta *mesh;
421 struct work_struct drv_deliver_wk;
430 enum ieee80211_sta_state sta_state;
432 /* use the accessors defined below */
433 unsigned long _flags;
435 /* STA powersave lock and frame queues */
437 struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
438 struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
439 unsigned long driver_buffered_tids;
440 unsigned long txq_buffered_tids;
444 /* Updated from RX path only, no locking requirements */
446 unsigned long packets;
448 unsigned long last_rx;
449 unsigned long num_duplicates;
450 unsigned long fragments;
451 unsigned long dropped;
454 s8 chain_signal_last[IEEE80211_MAX_CHAINS];
456 u64 msdu[IEEE80211_NUM_TIDS + 1];
459 struct ewma_signal signal;
460 struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS];
463 /* Plus 1 for non-QoS frames */
464 __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
466 /* Updated from TX status path only, no locking requirements */
468 unsigned long filtered;
469 unsigned long retry_failed, retry_count;
470 unsigned int lost_packets;
471 unsigned long last_tdls_pkt_time;
472 u64 msdu_retries[IEEE80211_NUM_TIDS + 1];
473 u64 msdu_failed[IEEE80211_NUM_TIDS + 1];
474 unsigned long last_ack;
477 /* Updated from TX path only, no locking requirements */
479 u64 packets[IEEE80211_NUM_ACS];
480 u64 bytes[IEEE80211_NUM_ACS];
481 struct ieee80211_tx_rate last_rate;
482 u64 msdu[IEEE80211_NUM_TIDS + 1];
484 u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
487 * Aggregation information, locked with lock.
489 struct sta_ampdu_mlme ampdu_mlme;
490 u8 timer_to_tid[IEEE80211_NUM_TIDS];
492 #ifdef CONFIG_MAC80211_DEBUGFS
493 struct dentry *debugfs_dir;
496 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth;
498 enum ieee80211_smps_mode known_smps_mode;
499 const struct ieee80211_cipher_scheme *cipher_scheme;
503 struct cfg80211_chan_def tdls_chandef;
506 struct ieee80211_sta sta;
509 static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta)
511 #ifdef CONFIG_MAC80211_MESH
512 return sta->mesh->plink_state;
514 return NL80211_PLINK_LISTEN;
517 static inline void set_sta_flag(struct sta_info *sta,
518 enum ieee80211_sta_info_flags flag)
520 WARN_ON(flag == WLAN_STA_AUTH ||
521 flag == WLAN_STA_ASSOC ||
522 flag == WLAN_STA_AUTHORIZED);
523 set_bit(flag, &sta->_flags);
526 static inline void clear_sta_flag(struct sta_info *sta,
527 enum ieee80211_sta_info_flags flag)
529 WARN_ON(flag == WLAN_STA_AUTH ||
530 flag == WLAN_STA_ASSOC ||
531 flag == WLAN_STA_AUTHORIZED);
532 clear_bit(flag, &sta->_flags);
535 static inline int test_sta_flag(struct sta_info *sta,
536 enum ieee80211_sta_info_flags flag)
538 return test_bit(flag, &sta->_flags);
541 static inline int test_and_clear_sta_flag(struct sta_info *sta,
542 enum ieee80211_sta_info_flags flag)
544 WARN_ON(flag == WLAN_STA_AUTH ||
545 flag == WLAN_STA_ASSOC ||
546 flag == WLAN_STA_AUTHORIZED);
547 return test_and_clear_bit(flag, &sta->_flags);
550 static inline int test_and_set_sta_flag(struct sta_info *sta,
551 enum ieee80211_sta_info_flags flag)
553 WARN_ON(flag == WLAN_STA_AUTH ||
554 flag == WLAN_STA_ASSOC ||
555 flag == WLAN_STA_AUTHORIZED);
556 return test_and_set_bit(flag, &sta->_flags);
559 int sta_info_move_state(struct sta_info *sta,
560 enum ieee80211_sta_state new_state);
562 static inline void sta_info_pre_move_state(struct sta_info *sta,
563 enum ieee80211_sta_state new_state)
567 WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED));
569 ret = sta_info_move_state(sta, new_state);
574 void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
575 struct tid_ampdu_tx *tid_tx);
577 static inline struct tid_ampdu_tx *
578 rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
580 return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid],
581 lockdep_is_held(&sta->lock) ||
582 lockdep_is_held(&sta->ampdu_mlme.mtx));
585 /* Maximum number of frames to buffer per power saving station per AC */
586 #define STA_MAX_TX_BUFFER 64
588 /* Minimum buffered frame expiry time. If STA uses listen interval that is
589 * smaller than this value, the minimum value here is used instead. */
590 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
592 /* How often station data is cleaned up (e.g., expiration of buffered frames)
594 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
597 * Get a STA info, must be under RCU read lock.
599 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
602 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
605 u32 sta_addr_hash(const void *key, u32 length, u32 seed);
607 #define _sta_bucket_idx(_tbl, _a) \
608 rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd))
610 #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \
611 rht_for_each_entry_rcu(_sta, _tmp, tbl, \
612 _sta_bucket_idx(tbl, _addr), \
614 /* compare address and run code only if it matches */ \
615 if (ether_addr_equal(_sta->addr, (_addr)))
618 * Get STA info by index, BROKEN!
620 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
623 * Create a new STA info, caller owns returned structure
624 * until sta_info_insert().
626 struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
627 const u8 *addr, gfp_t gfp);
629 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta);
632 * Insert STA info into hash table/list, returns zero or a
633 * -EEXIST if (if the same MAC address is already present).
635 * Calling the non-rcu version makes the caller relinquish,
636 * the _rcu version calls read_lock_rcu() and must be called
639 int sta_info_insert(struct sta_info *sta);
640 int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
642 int __must_check __sta_info_destroy(struct sta_info *sta);
643 int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
645 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
648 void sta_info_recalc_tim(struct sta_info *sta);
650 int sta_info_init(struct ieee80211_local *local);
651 void sta_info_stop(struct ieee80211_local *local);
654 * sta_info_flush - flush matching STA entries from the STA table
656 * Returns the number of removed STA entries.
658 * @sdata: sdata to remove all stations from
659 * @vlans: if the given interface is an AP interface, also flush VLANs
661 int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans);
663 static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata)
665 return __sta_info_flush(sdata, false);
668 void sta_set_rate_info_tx(struct sta_info *sta,
669 const struct ieee80211_tx_rate *rate,
670 struct rate_info *rinfo);
671 void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo);
673 void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
674 unsigned long exp_time);
675 u8 sta_info_tx_streams(struct sta_info *sta);
677 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
678 void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
679 void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta);
681 unsigned long ieee80211_sta_last_active(struct sta_info *sta);
683 #define STA_STATS_RATE_INVALID 0
684 #define STA_STATS_RATE_VHT 0x8000
685 #define STA_STATS_RATE_HT 0x4000
686 #define STA_STATS_RATE_LEGACY 0x2000
687 #define STA_STATS_RATE_SGI 0x1000
688 #define STA_STATS_RATE_BW_SHIFT 9
689 #define STA_STATS_RATE_BW_MASK (0x7 << STA_STATS_RATE_BW_SHIFT)
691 static inline u16 sta_stats_encode_rate(struct ieee80211_rx_status *s)
695 if (s->vht_flag & RX_VHT_FLAG_80MHZ)
696 r |= RATE_INFO_BW_80 << STA_STATS_RATE_BW_SHIFT;
697 else if (s->vht_flag & RX_VHT_FLAG_160MHZ)
698 r |= RATE_INFO_BW_160 << STA_STATS_RATE_BW_SHIFT;
699 else if (s->flag & RX_FLAG_40MHZ)
700 r |= RATE_INFO_BW_40 << STA_STATS_RATE_BW_SHIFT;
701 else if (s->flag & RX_FLAG_10MHZ)
702 r |= RATE_INFO_BW_10 << STA_STATS_RATE_BW_SHIFT;
703 else if (s->flag & RX_FLAG_5MHZ)
704 r |= RATE_INFO_BW_5 << STA_STATS_RATE_BW_SHIFT;
706 r |= RATE_INFO_BW_20 << STA_STATS_RATE_BW_SHIFT;
708 if (s->flag & RX_FLAG_SHORT_GI)
709 r |= STA_STATS_RATE_SGI;
711 if (s->flag & RX_FLAG_VHT)
712 r |= STA_STATS_RATE_VHT | (s->vht_nss << 4);
713 else if (s->flag & RX_FLAG_HT)
714 r |= STA_STATS_RATE_HT;
716 r |= STA_STATS_RATE_LEGACY | (s->band << 4);
721 #endif /* STA_INFO_H */