1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright 2002-2005, Devicescape Software, Inc.
4 * Copyright 2013-2014 Intel Mobile Communications GmbH
5 * Copyright(c) 2015-2017 Intel Deutschland GmbH
6 * Copyright(c) 2020 Intel Corporation
12 #include <linux/list.h>
13 #include <linux/types.h>
14 #include <linux/if_ether.h>
15 #include <linux/workqueue.h>
16 #include <linux/average.h>
17 #include <linux/bitfield.h>
18 #include <linux/etherdevice.h>
19 #include <linux/rhashtable.h>
20 #include <linux/u64_stats_sync.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
72 * @WLAN_STA_USES_ENCRYPTION: This station was configured for encryption,
73 * so drop all packets without a key later.
75 * @NUM_WLAN_STA_FLAGS: number of defined flags
77 enum ieee80211_sta_info_flags {
82 WLAN_STA_SHORT_PREAMBLE,
84 WLAN_STA_CLEAR_PS_FILT,
90 WLAN_STA_TDLS_PEER_AUTH,
91 WLAN_STA_TDLS_INITIATOR,
92 WLAN_STA_TDLS_CHAN_SWITCH,
93 WLAN_STA_TDLS_OFF_CHANNEL,
94 WLAN_STA_TDLS_WIDER_BW,
99 WLAN_STA_RATE_CONTROL,
100 WLAN_STA_TOFFSET_KNOWN,
102 WLAN_STA_MPSP_RECIPIENT,
104 WLAN_STA_USES_ENCRYPTION,
109 #define ADDBA_RESP_INTERVAL HZ
110 #define HT_AGG_MAX_RETRIES 15
111 #define HT_AGG_BURST_RETRIES 3
112 #define HT_AGG_RETRIES_PERIOD (15 * HZ)
114 #define HT_AGG_STATE_DRV_READY 0
115 #define HT_AGG_STATE_RESPONSE_RECEIVED 1
116 #define HT_AGG_STATE_OPERATIONAL 2
117 #define HT_AGG_STATE_STOPPING 3
118 #define HT_AGG_STATE_WANT_START 4
119 #define HT_AGG_STATE_WANT_STOP 5
120 #define HT_AGG_STATE_START_CB 6
121 #define HT_AGG_STATE_STOP_CB 7
122 #define HT_AGG_STATE_SENT_ADDBA 8
124 DECLARE_EWMA(avg_signal, 10, 8)
125 enum ieee80211_agg_stop_reason {
127 AGG_STOP_LOCAL_REQUEST,
128 AGG_STOP_PEER_REQUEST,
129 AGG_STOP_DESTROY_STA,
132 /* Debugfs flags to enable/disable use of RX/TX airtime in scheduler */
133 #define AIRTIME_USE_TX BIT(0)
134 #define AIRTIME_USE_RX BIT(1)
136 struct airtime_info {
140 atomic_t aql_tx_pending; /* Estimated airtime for frames pending */
145 void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local,
146 struct sta_info *sta, u8 ac,
147 u16 tx_airtime, bool tx_completed);
152 * struct tid_ampdu_tx - TID aggregation information (Tx).
154 * @rcu_head: rcu head for freeing structure
155 * @session_timer: check if we keep Tx-ing on the TID (by timeout value)
156 * @addba_resp_timer: timer for peer's response to addba request
157 * @pending: pending frames queue -- use sta's spinlock to protect
158 * @sta: station we are attached to
159 * @dialog_token: dialog token for aggregation session
160 * @timeout: session timeout value to be filled in ADDBA requests
162 * @state: session state (see above)
163 * @last_tx: jiffies of last tx activity
164 * @stop_initiator: initiator of a session stop
165 * @tx_stop: TX DelBA frame when stopping
166 * @buf_size: reorder buffer size at receiver
167 * @failed_bar_ssn: ssn of the last failed BAR tx attempt
168 * @bar_pending: BAR needs to be re-sent
169 * @amsdu: support A-MSDU withing A-MDPU
171 * This structure's lifetime is managed by RCU, assignments to
172 * the array holding it must hold the aggregation mutex.
174 * The TX path can access it under RCU lock-free if, and
175 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
176 * set. Otherwise, the TX path must also acquire the spinlock
177 * and re-check the state, see comments in the tx code
180 struct tid_ampdu_tx {
181 struct rcu_head rcu_head;
182 struct timer_list session_timer;
183 struct timer_list addba_resp_timer;
184 struct sk_buff_head pending;
185 struct sta_info *sta;
187 unsigned long last_tx;
201 * struct tid_ampdu_rx - TID aggregation information (Rx).
203 * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
204 * A-MSDU with individually reported subframes.
205 * @reorder_buf_filtered: bitmap indicating where there are filtered frames in
206 * the reorder buffer that should be ignored when releasing frames
207 * @reorder_time: jiffies when skb was added
208 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
209 * @reorder_timer: releases expired frames from the reorder buffer.
210 * @sta: station we are attached to
211 * @last_rx: jiffies of last rx activity
212 * @head_seq_num: head sequence number in reordering buffer.
213 * @stored_mpdu_num: number of MPDUs in reordering buffer
214 * @ssn: Starting Sequence Number expected to be aggregated.
215 * @buf_size: buffer size for incoming A-MPDUs
216 * @timeout: reset timer value (in TUs).
218 * @rcu_head: RCU head used for freeing this struct
219 * @reorder_lock: serializes access to reorder buffer, see below.
220 * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
222 * @removed: this session is removed (but might have been found due to RCU)
223 * @started: this session has started (head ssn or higher was received)
225 * This structure's lifetime is managed by RCU, assignments to
226 * the array holding it must hold the aggregation mutex.
228 * The @reorder_lock is used to protect the members of this
229 * struct, except for @timeout, @buf_size and @dialog_token,
230 * which are constant across the lifetime of the struct (the
231 * dialog token being used only for debugging).
233 struct tid_ampdu_rx {
234 struct rcu_head rcu_head;
235 spinlock_t reorder_lock;
236 u64 reorder_buf_filtered;
237 struct sk_buff_head *reorder_buf;
238 unsigned long *reorder_time;
239 struct sta_info *sta;
240 struct timer_list session_timer;
241 struct timer_list reorder_timer;
242 unsigned long last_rx;
255 * struct sta_ampdu_mlme - STA aggregation information.
257 * @mtx: mutex to protect all TX data (except non-NULL assignments
258 * to tid_tx[idx], which are protected by the sta spinlock)
259 * tid_start_tx is also protected by sta->lock.
260 * @tid_rx: aggregation info for Rx per TID -- RCU protected
261 * @tid_rx_token: dialog tokens for valid aggregation sessions
262 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
263 * RX timer expired until the work for it runs
264 * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the
265 * driver requested to close until the work for it runs
266 * @tid_rx_manage_offl: bitmap indicating which BA sessions were requested
267 * to be treated as started/stopped due to offloading
268 * @agg_session_valid: bitmap indicating which TID has a rx BA session open on
269 * @unexpected_agg: bitmap indicating which TID already sent a delBA due to
270 * unexpected aggregation related frames outside a session
271 * @work: work struct for starting/stopping aggregation
272 * @tid_tx: aggregation info for Tx per TID
273 * @tid_start_tx: sessions where start was requested
274 * @last_addba_req_time: timestamp of the last addBA request.
275 * @addba_req_num: number of times addBA request has been sent.
276 * @dialog_token_allocator: dialog token enumerator for each new session;
278 struct sta_ampdu_mlme {
281 struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS];
282 u8 tid_rx_token[IEEE80211_NUM_TIDS];
283 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
284 unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
285 unsigned long tid_rx_manage_offl[BITS_TO_LONGS(2 * IEEE80211_NUM_TIDS)];
286 unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
287 unsigned long unexpected_agg[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
289 struct work_struct work;
290 struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS];
291 struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS];
292 unsigned long last_addba_req_time[IEEE80211_NUM_TIDS];
293 u8 addba_req_num[IEEE80211_NUM_TIDS];
294 u8 dialog_token_allocator;
298 /* Value to indicate no TID reservation */
299 #define IEEE80211_TID_UNRESERVED 0xff
301 #define IEEE80211_FAST_XMIT_MAX_IV 18
304 * struct ieee80211_fast_tx - TX fastpath information
305 * @key: key to use for hw crypto
306 * @hdr: the 802.11 header to put with the frame
307 * @hdr_len: actual 802.11 header length
308 * @sa_offs: offset of the SA
309 * @da_offs: offset of the DA
310 * @pn_offs: offset where to put PN for crypto (or 0 if not needed)
311 * @band: band this will be transmitted on, for tx_info
312 * @rcu_head: RCU head to free this struct
314 * This struct is small enough so that the common case (maximum crypto
315 * header length of 8 like for CCMP/GCMP) fits into a single 64-byte
318 struct ieee80211_fast_tx {
319 struct ieee80211_key *key;
321 u8 sa_offs, da_offs, pn_offs;
323 u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
324 sizeof(rfc1042_header)] __aligned(2);
326 struct rcu_head rcu_head;
330 * struct ieee80211_fast_rx - RX fastpath information
331 * @dev: netdevice for reporting the SKB
332 * @vif_type: (P2P-less) interface type of the original sdata (sdata->vif.type)
333 * @vif_addr: interface address
334 * @rfc1042_hdr: copy of the RFC 1042 SNAP header (to have in cache)
335 * @control_port_protocol: control port protocol copied from sdata
336 * @expected_ds_bits: from/to DS bits expected
337 * @icv_len: length of the MIC if present
338 * @key: bool indicating encryption is expected (key is set)
339 * @sta_notify: notify the MLME code (once)
340 * @internal_forward: forward froms internally on AP/VLAN type interfaces
341 * @uses_rss: copy of USES_RSS hw flag
342 * @da_offs: offset of the DA in the header (for header conversion)
343 * @sa_offs: offset of the SA in the header (for header conversion)
344 * @rcu_head: RCU head for freeing this structure
346 struct ieee80211_fast_rx {
347 struct net_device *dev;
348 enum nl80211_iftype vif_type;
349 u8 vif_addr[ETH_ALEN] __aligned(2);
350 u8 rfc1042_hdr[6] __aligned(2);
351 __be16 control_port_protocol;
352 __le16 expected_ds_bits;
360 struct rcu_head rcu_head;
363 /* we use only values in the range 0-100, so pick a large precision */
364 DECLARE_EWMA(mesh_fail_avg, 20, 8)
365 DECLARE_EWMA(mesh_tx_rate_avg, 8, 16)
368 * struct mesh_sta - mesh STA information
369 * @plink_lock: serialize access to plink fields
370 * @llid: Local link ID
371 * @plid: Peer link ID
372 * @aid: local aid supplied by peer
373 * @reason: Cancel reason on PLINK_HOLDING state
374 * @plink_retries: Retries in establishment
375 * @plink_state: peer link state
376 * @plink_timeout: timeout of peer link
377 * @plink_timer: peer link watch timer
378 * @plink_sta: peer link watch timer's sta_info
379 * @t_offset: timing offset relative to this host
380 * @t_offset_setpoint: reference timing offset of this sta to be used when
381 * calculating clockdrift
382 * @local_pm: local link-specific power save mode
383 * @peer_pm: peer-specific power save mode towards local STA
384 * @nonpeer_pm: STA power save mode towards non-peer neighbors
385 * @processed_beacon: set to true after peer rates and capabilities are
387 * @connected_to_gate: true if mesh STA has a path to a mesh gate
388 * @connected_to_as: true if mesh STA has a path to a authentication server
389 * @fail_avg: moving percentage of failed MSDUs
390 * @tx_rate_avg: moving average of tx bitrate
393 struct timer_list plink_timer;
394 struct sta_info *plink_sta;
397 s64 t_offset_setpoint;
399 spinlock_t plink_lock;
406 bool processed_beacon;
407 bool connected_to_gate;
408 bool connected_to_as;
410 enum nl80211_plink_state plink_state;
413 /* mesh power save */
414 enum nl80211_mesh_power_mode local_pm;
415 enum nl80211_mesh_power_mode peer_pm;
416 enum nl80211_mesh_power_mode nonpeer_pm;
418 /* moving percentage of failed MSDUs */
419 struct ewma_mesh_fail_avg fail_avg;
420 /* moving average of tx bitrate */
421 struct ewma_mesh_tx_rate_avg tx_rate_avg;
424 DECLARE_EWMA(signal, 10, 8)
426 struct ieee80211_sta_rx_stats {
427 unsigned long packets;
428 unsigned long last_rx;
429 unsigned long num_duplicates;
430 unsigned long fragments;
431 unsigned long dropped;
434 s8 chain_signal_last[IEEE80211_MAX_CHAINS];
436 struct u64_stats_sync syncp;
438 u64 msdu[IEEE80211_NUM_TIDS + 1];
442 * The bandwidth threshold below which the per-station CoDel parameters will be
443 * scaled to be more lenient (to prevent starvation of slow stations). This
444 * value will be scaled by the number of active stations when it is being
447 #define STA_SLOW_THRESHOLD 6000 /* 6 Mbps */
450 * struct sta_info - STA information
452 * This structure collects information about a station that
453 * mac80211 is communicating with.
455 * @list: global linked list entry
456 * @free_list: list entry for keeping track of stations to free
457 * @hash_node: hash node for rhashtable
458 * @addr: station's MAC address - duplicated from public part to
459 * let the hash table work with just a single cacheline
460 * @local: pointer to the global information
461 * @sdata: virtual interface this station belongs to
462 * @ptk: peer keys negotiated with this station, if any
463 * @ptk_idx: last installed peer key index
464 * @gtk: group keys negotiated with this station, if any
465 * @rate_ctrl: rate control algorithm reference
466 * @rate_ctrl_lock: spinlock used to protect rate control data
467 * (data inside the algorithm, so serializes calls there)
468 * @rate_ctrl_priv: rate control private per-STA pointer
469 * @lock: used for locking all fields that require locking, see comments
470 * in the header file.
471 * @drv_deliver_wk: used for delivering frames after driver PS unblocking
472 * @listen_interval: listen interval of this station, when we're acting as AP
473 * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
474 * @ps_lock: used for powersave (when mac80211 is the AP) related locking
475 * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
476 * when it leaves power saving state or polls
477 * @tx_filtered: buffers (per AC) of frames we already tried to
478 * transmit but were filtered by hardware due to STA having
479 * entered power saving state, these are also delivered to
480 * the station when it leaves powersave or polls for frames
481 * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
482 * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
483 * @assoc_at: clock boottime (in ns) of last association
484 * @last_connected: time (in seconds) when a station got connected
485 * @last_seq_ctrl: last received seq/frag number from this STA (per TID
486 * plus one for non-QoS frames)
487 * @tid_seq: per-TID sequence numbers for sending to this STA
488 * @airtime: per-AC struct airtime_info describing airtime statistics for this
490 * @airtime_weight: station weight for airtime fairness calculation purposes
491 * @ampdu_mlme: A-MPDU state machine state
492 * @mesh: mesh STA information
493 * @debugfs_dir: debug filesystem directory dentry
494 * @dead: set to true when sta is unlinked
495 * @removed: set to true when sta is being removed from sta_list
496 * @uploaded: set to true when sta is uploaded to the driver
497 * @sta: station information we share with the driver
498 * @sta_state: duplicates information about station state (for debug)
499 * @rcu_head: RCU head used for freeing this station struct
500 * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
501 * taken from HT/VHT capabilities or VHT operating mode notification
502 * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
504 * @cipher_scheme: optional cipher scheme for this station
505 * @cparams: CoDel parameters for this station.
506 * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
507 * @fast_tx: TX fastpath information
508 * @fast_rx: RX fastpath information
509 * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
511 * @tx_stats: TX statistics
512 * @tx_stats.packets: # of packets transmitted
513 * @tx_stats.bytes: # of bytes in all packets transmitted
514 * @tx_stats.last_rate: last TX rate
515 * @tx_stats.msdu: # of transmitted MSDUs per TID
516 * @rx_stats: RX statistics
517 * @rx_stats_avg: averaged RX statistics
518 * @rx_stats_avg.signal: averaged signal
519 * @rx_stats_avg.chain_signal: averaged per-chain signal
520 * @pcpu_rx_stats: per-CPU RX statistics, assigned only if the driver needs
521 * this (by advertising the USES_RSS hw flag)
522 * @status_stats: TX status statistics
523 * @status_stats.filtered: # of filtered frames
524 * @status_stats.retry_failed: # of frames that failed after retry
525 * @status_stats.retry_count: # of retries attempted
526 * @status_stats.lost_packets: # of lost packets
527 * @status_stats.last_pkt_time: timestamp of last ACKed packet
528 * @status_stats.msdu_retries: # of MSDU retries
529 * @status_stats.msdu_failed: # of failed MSDUs
530 * @status_stats.last_ack: last ack timestamp (jiffies)
531 * @status_stats.last_ack_signal: last ACK signal
532 * @status_stats.ack_signal_filled: last ACK signal validity
533 * @status_stats.avg_ack_signal: average ACK signal
536 /* General information, mostly static */
537 struct list_head list, free_list;
538 struct rcu_head rcu_head;
539 struct rhlist_head hash_node;
541 struct ieee80211_local *local;
542 struct ieee80211_sub_if_data *sdata;
543 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
544 NUM_DEFAULT_MGMT_KEYS +
545 NUM_DEFAULT_BEACON_KEYS];
546 struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS];
548 struct rate_control_ref *rate_ctrl;
549 void *rate_ctrl_priv;
550 spinlock_t rate_ctrl_lock;
553 struct ieee80211_fast_tx __rcu *fast_tx;
554 struct ieee80211_fast_rx __rcu *fast_rx;
555 struct ieee80211_sta_rx_stats __percpu *pcpu_rx_stats;
557 #ifdef CONFIG_MAC80211_MESH
558 struct mesh_sta *mesh;
561 struct work_struct drv_deliver_wk;
570 enum ieee80211_sta_state sta_state;
572 /* use the accessors defined below */
573 unsigned long _flags;
575 /* STA powersave lock and frame queues */
577 struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
578 struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
579 unsigned long driver_buffered_tids;
580 unsigned long txq_buffered_tids;
585 /* Updated from RX path only, no locking requirements */
586 struct ieee80211_sta_rx_stats rx_stats;
588 struct ewma_signal signal;
589 struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS];
592 /* Plus 1 for non-QoS frames */
593 __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
595 /* Updated from TX status path only, no locking requirements */
597 unsigned long filtered;
598 unsigned long retry_failed, retry_count;
599 unsigned int lost_packets;
600 unsigned long last_pkt_time;
601 u64 msdu_retries[IEEE80211_NUM_TIDS + 1];
602 u64 msdu_failed[IEEE80211_NUM_TIDS + 1];
603 unsigned long last_ack;
605 bool ack_signal_filled;
606 struct ewma_avg_signal avg_ack_signal;
609 /* Updated from TX path only, no locking requirements */
611 u64 packets[IEEE80211_NUM_ACS];
612 u64 bytes[IEEE80211_NUM_ACS];
613 struct ieee80211_tx_rate last_rate;
614 struct rate_info last_rate_info;
615 u64 msdu[IEEE80211_NUM_TIDS + 1];
617 u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
619 struct airtime_info airtime[IEEE80211_NUM_ACS];
623 * Aggregation information, locked with lock.
625 struct sta_ampdu_mlme ampdu_mlme;
627 #ifdef CONFIG_MAC80211_DEBUGFS
628 struct dentry *debugfs_dir;
631 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth;
633 enum ieee80211_smps_mode known_smps_mode;
634 const struct ieee80211_cipher_scheme *cipher_scheme;
636 struct codel_params cparams;
640 struct cfg80211_chan_def tdls_chandef;
643 struct ieee80211_sta sta;
646 static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta)
648 #ifdef CONFIG_MAC80211_MESH
649 return sta->mesh->plink_state;
651 return NL80211_PLINK_LISTEN;
654 static inline void set_sta_flag(struct sta_info *sta,
655 enum ieee80211_sta_info_flags flag)
657 WARN_ON(flag == WLAN_STA_AUTH ||
658 flag == WLAN_STA_ASSOC ||
659 flag == WLAN_STA_AUTHORIZED);
660 set_bit(flag, &sta->_flags);
663 static inline void clear_sta_flag(struct sta_info *sta,
664 enum ieee80211_sta_info_flags flag)
666 WARN_ON(flag == WLAN_STA_AUTH ||
667 flag == WLAN_STA_ASSOC ||
668 flag == WLAN_STA_AUTHORIZED);
669 clear_bit(flag, &sta->_flags);
672 static inline int test_sta_flag(struct sta_info *sta,
673 enum ieee80211_sta_info_flags flag)
675 return test_bit(flag, &sta->_flags);
678 static inline int test_and_clear_sta_flag(struct sta_info *sta,
679 enum ieee80211_sta_info_flags flag)
681 WARN_ON(flag == WLAN_STA_AUTH ||
682 flag == WLAN_STA_ASSOC ||
683 flag == WLAN_STA_AUTHORIZED);
684 return test_and_clear_bit(flag, &sta->_flags);
687 static inline int test_and_set_sta_flag(struct sta_info *sta,
688 enum ieee80211_sta_info_flags flag)
690 WARN_ON(flag == WLAN_STA_AUTH ||
691 flag == WLAN_STA_ASSOC ||
692 flag == WLAN_STA_AUTHORIZED);
693 return test_and_set_bit(flag, &sta->_flags);
696 int sta_info_move_state(struct sta_info *sta,
697 enum ieee80211_sta_state new_state);
699 static inline void sta_info_pre_move_state(struct sta_info *sta,
700 enum ieee80211_sta_state new_state)
704 WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED));
706 ret = sta_info_move_state(sta, new_state);
711 void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
712 struct tid_ampdu_tx *tid_tx);
714 static inline struct tid_ampdu_tx *
715 rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
717 return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid],
718 lockdep_is_held(&sta->lock) ||
719 lockdep_is_held(&sta->ampdu_mlme.mtx));
722 /* Maximum number of frames to buffer per power saving station per AC */
723 #define STA_MAX_TX_BUFFER 64
725 /* Minimum buffered frame expiry time. If STA uses listen interval that is
726 * smaller than this value, the minimum value here is used instead. */
727 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
729 /* How often station data is cleaned up (e.g., expiration of buffered frames)
731 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
733 struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local,
737 * Get a STA info, must be under RCU read lock.
739 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
742 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
745 /* user must hold sta_mtx or be in RCU critical section */
746 struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local,
747 const u8 *sta_addr, const u8 *vif_addr);
749 #define for_each_sta_info(local, _addr, _sta, _tmp) \
750 rhl_for_each_entry_rcu(_sta, _tmp, \
751 sta_info_hash_lookup(local, _addr), hash_node)
754 * Get STA info by index, BROKEN!
756 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
759 * Create a new STA info, caller owns returned structure
760 * until sta_info_insert().
762 struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
763 const u8 *addr, gfp_t gfp);
765 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta);
768 * Insert STA info into hash table/list, returns zero or a
769 * -EEXIST if (if the same MAC address is already present).
771 * Calling the non-rcu version makes the caller relinquish,
772 * the _rcu version calls read_lock_rcu() and must be called
775 int sta_info_insert(struct sta_info *sta);
776 int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
778 int __must_check __sta_info_destroy(struct sta_info *sta);
779 int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
781 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
784 void sta_info_recalc_tim(struct sta_info *sta);
786 int sta_info_init(struct ieee80211_local *local);
787 void sta_info_stop(struct ieee80211_local *local);
790 * sta_info_flush - flush matching STA entries from the STA table
792 * Returns the number of removed STA entries.
794 * @sdata: sdata to remove all stations from
795 * @vlans: if the given interface is an AP interface, also flush VLANs
797 int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans);
799 static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata)
801 return __sta_info_flush(sdata, false);
804 void sta_set_rate_info_tx(struct sta_info *sta,
805 const struct ieee80211_tx_rate *rate,
806 struct rate_info *rinfo);
807 void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
810 u32 sta_get_expected_throughput(struct sta_info *sta);
812 void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
813 unsigned long exp_time);
814 u8 sta_info_tx_streams(struct sta_info *sta);
816 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
817 void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
818 void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta);
820 unsigned long ieee80211_sta_last_active(struct sta_info *sta);
822 enum sta_stats_type {
823 STA_STATS_RATE_TYPE_INVALID = 0,
824 STA_STATS_RATE_TYPE_LEGACY,
825 STA_STATS_RATE_TYPE_HT,
826 STA_STATS_RATE_TYPE_VHT,
827 STA_STATS_RATE_TYPE_HE,
830 #define STA_STATS_FIELD_HT_MCS GENMASK( 7, 0)
831 #define STA_STATS_FIELD_LEGACY_IDX GENMASK( 3, 0)
832 #define STA_STATS_FIELD_LEGACY_BAND GENMASK( 7, 4)
833 #define STA_STATS_FIELD_VHT_MCS GENMASK( 3, 0)
834 #define STA_STATS_FIELD_VHT_NSS GENMASK( 7, 4)
835 #define STA_STATS_FIELD_HE_MCS GENMASK( 3, 0)
836 #define STA_STATS_FIELD_HE_NSS GENMASK( 7, 4)
837 #define STA_STATS_FIELD_BW GENMASK(11, 8)
838 #define STA_STATS_FIELD_SGI GENMASK(12, 12)
839 #define STA_STATS_FIELD_TYPE GENMASK(15, 13)
840 #define STA_STATS_FIELD_HE_RU GENMASK(18, 16)
841 #define STA_STATS_FIELD_HE_GI GENMASK(20, 19)
842 #define STA_STATS_FIELD_HE_DCM GENMASK(21, 21)
844 #define STA_STATS_FIELD(_n, _v) FIELD_PREP(STA_STATS_FIELD_ ## _n, _v)
845 #define STA_STATS_GET(_n, _v) FIELD_GET(STA_STATS_FIELD_ ## _n, _v)
847 #define STA_STATS_RATE_INVALID 0
849 static inline u32 sta_stats_encode_rate(struct ieee80211_rx_status *s)
853 r = STA_STATS_FIELD(BW, s->bw);
855 if (s->enc_flags & RX_ENC_FLAG_SHORT_GI)
856 r |= STA_STATS_FIELD(SGI, 1);
858 switch (s->encoding) {
860 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_VHT);
861 r |= STA_STATS_FIELD(VHT_NSS, s->nss);
862 r |= STA_STATS_FIELD(VHT_MCS, s->rate_idx);
865 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HT);
866 r |= STA_STATS_FIELD(HT_MCS, s->rate_idx);
869 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_LEGACY);
870 r |= STA_STATS_FIELD(LEGACY_BAND, s->band);
871 r |= STA_STATS_FIELD(LEGACY_IDX, s->rate_idx);
874 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HE);
875 r |= STA_STATS_FIELD(HE_NSS, s->nss);
876 r |= STA_STATS_FIELD(HE_MCS, s->rate_idx);
877 r |= STA_STATS_FIELD(HE_GI, s->he_gi);
878 r |= STA_STATS_FIELD(HE_RU, s->he_ru);
879 r |= STA_STATS_FIELD(HE_DCM, s->he_dcm);
883 return STA_STATS_RATE_INVALID;
889 #endif /* STA_INFO_H */