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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Devicescape Software, Inc. | |
d98ad83e | 3 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
f0706e82 JB |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #ifndef STA_INFO_H | |
11 | #define STA_INFO_H | |
12 | ||
13 | #include <linux/list.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/if_ether.h> | |
af818581 | 16 | #include <linux/workqueue.h> |
541a45a1 | 17 | #include <linux/average.h> |
888d04df | 18 | #include <linux/etherdevice.h> |
7bedd0cf | 19 | #include <linux/rhashtable.h> |
2c8dccc7 | 20 | #include "key.h" |
f0706e82 | 21 | |
238814fd JB |
22 | /** |
23 | * enum ieee80211_sta_info_flags - Stations flags | |
24 | * | |
c2c98fde JB |
25 | * These flags are used with &struct sta_info's @flags member, but |
26 | * only indirectly with set_sta_flag() and friends. | |
238814fd JB |
27 | * |
28 | * @WLAN_STA_AUTH: Station is authenticated. | |
29 | * @WLAN_STA_ASSOC: Station is associated. | |
af818581 | 30 | * @WLAN_STA_PS_STA: Station is in power-save mode |
238814fd JB |
31 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
32 | * This bit is always checked so needs to be enabled for all stations | |
33 | * when virtual port control is not in use. | |
34 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble | |
35 | * frames. | |
238814fd | 36 | * @WLAN_STA_WDS: Station is one of our WDS peers. |
d46e144b | 37 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
e039fa4a | 38 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
d46e144b | 39 | * frame to this station is transmitted. |
5394af4d | 40 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
618f356b | 41 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
098a6070 | 42 | * during suspend/resume and station removal. |
af818581 JB |
43 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
44 | * power-save mode logically to flush frames that might still | |
45 | * be in the queues | |
46 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping | |
47 | * station in power-save mode, reply when the driver unblocks. | |
941c93cd AN |
48 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
49 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct | |
50 | * packets. This means the link is enabled. | |
626911cc AN |
51 | * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this |
52 | * station. | |
9041c1fa | 53 | * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching |
a7a6bdd0 AN |
54 | * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this |
55 | * TDLS peer | |
47086fc5 JB |
56 | * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
57 | * keeping station in power-save mode, reply when the driver | |
58 | * unblocks the station. | |
59 | * @WLAN_STA_SP: Station is in a service period, so don't try to | |
deeaee19 | 60 | * reply to other uAPSD trigger frames or PS-Poll. |
e7f4a940 | 61 | * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
83d5cc01 | 62 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
e1936e94 | 63 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
dbf498fb | 64 | * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
3f52b7e3 MP |
65 | * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period. |
66 | * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP. | |
5ac2e350 JB |
67 | * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX |
68 | * until pending frames are delivered | |
238814fd JB |
69 | */ |
70 | enum ieee80211_sta_info_flags { | |
c2c98fde JB |
71 | WLAN_STA_AUTH, |
72 | WLAN_STA_ASSOC, | |
73 | WLAN_STA_PS_STA, | |
74 | WLAN_STA_AUTHORIZED, | |
75 | WLAN_STA_SHORT_PREAMBLE, | |
c2c98fde JB |
76 | WLAN_STA_WDS, |
77 | WLAN_STA_CLEAR_PS_FILT, | |
78 | WLAN_STA_MFP, | |
79 | WLAN_STA_BLOCK_BA, | |
80 | WLAN_STA_PS_DRIVER, | |
81 | WLAN_STA_PSPOLL, | |
82 | WLAN_STA_TDLS_PEER, | |
83 | WLAN_STA_TDLS_PEER_AUTH, | |
626911cc | 84 | WLAN_STA_TDLS_INITIATOR, |
9041c1fa | 85 | WLAN_STA_TDLS_CHAN_SWITCH, |
a7a6bdd0 | 86 | WLAN_STA_TDLS_OFF_CHANNEL, |
c2c98fde JB |
87 | WLAN_STA_UAPSD, |
88 | WLAN_STA_SP, | |
e7f4a940 | 89 | WLAN_STA_4ADDR_EVENT, |
83d5cc01 | 90 | WLAN_STA_INSERTED, |
e1936e94 | 91 | WLAN_STA_RATE_CONTROL, |
dbf498fb | 92 | WLAN_STA_TOFFSET_KNOWN, |
3f52b7e3 MP |
93 | WLAN_STA_MPSP_OWNER, |
94 | WLAN_STA_MPSP_RECIPIENT, | |
5ac2e350 | 95 | WLAN_STA_PS_DELIVER, |
238814fd | 96 | }; |
d9a7ddb0 | 97 | |
5aae2880 | 98 | #define ADDBA_RESP_INTERVAL HZ |
84381b4e NM |
99 | #define HT_AGG_MAX_RETRIES 15 |
100 | #define HT_AGG_BURST_RETRIES 3 | |
101 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) | |
5aae2880 | 102 | |
a622ab72 JB |
103 | #define HT_AGG_STATE_DRV_READY 0 |
104 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 | |
105 | #define HT_AGG_STATE_OPERATIONAL 2 | |
106 | #define HT_AGG_STATE_STOPPING 3 | |
0ab33703 JB |
107 | #define HT_AGG_STATE_WANT_START 4 |
108 | #define HT_AGG_STATE_WANT_STOP 5 | |
80656c20 | 109 | |
c82c4a80 JB |
110 | enum ieee80211_agg_stop_reason { |
111 | AGG_STOP_DECLINED, | |
112 | AGG_STOP_LOCAL_REQUEST, | |
113 | AGG_STOP_PEER_REQUEST, | |
114 | AGG_STOP_DESTROY_STA, | |
115 | }; | |
116 | ||
80656c20 RR |
117 | /** |
118 | * struct tid_ampdu_tx - TID aggregation information (Tx). | |
119 | * | |
a622ab72 | 120 | * @rcu_head: rcu head for freeing structure |
285fa695 | 121 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
80656c20 | 122 | * @addba_resp_timer: timer for peer's response to addba request |
cd8ffc80 | 123 | * @pending: pending frames queue -- use sta's spinlock to protect |
cee24a3e | 124 | * @dialog_token: dialog token for aggregation session |
bd2ce6e4 | 125 | * @timeout: session timeout value to be filled in ADDBA requests |
a622ab72 | 126 | * @state: session state (see above) |
12d3952f | 127 | * @last_tx: jiffies of last tx activity |
a622ab72 | 128 | * @stop_initiator: initiator of a session stop |
53f73c09 | 129 | * @tx_stop: TX DelBA frame when stopping |
0b01f030 | 130 | * @buf_size: reorder buffer size at receiver |
f0425bed FF |
131 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
132 | * @bar_pending: BAR needs to be re-sent | |
a622ab72 | 133 | * |
dd318575 JB |
134 | * This structure's lifetime is managed by RCU, assignments to |
135 | * the array holding it must hold the aggregation mutex. | |
136 | * | |
137 | * The TX path can access it under RCU lock-free if, and | |
138 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL | |
139 | * set. Otherwise, the TX path must also acquire the spinlock | |
140 | * and re-check the state, see comments in the tx code | |
141 | * touching it. | |
80656c20 RR |
142 | */ |
143 | struct tid_ampdu_tx { | |
a622ab72 | 144 | struct rcu_head rcu_head; |
285fa695 | 145 | struct timer_list session_timer; |
80656c20 | 146 | struct timer_list addba_resp_timer; |
cd8ffc80 | 147 | struct sk_buff_head pending; |
a622ab72 | 148 | unsigned long state; |
12d3952f | 149 | unsigned long last_tx; |
bd2ce6e4 | 150 | u16 timeout; |
cee24a3e | 151 | u8 dialog_token; |
a622ab72 | 152 | u8 stop_initiator; |
53f73c09 | 153 | bool tx_stop; |
0b01f030 | 154 | u8 buf_size; |
f0425bed FF |
155 | |
156 | u16 failed_bar_ssn; | |
157 | bool bar_pending; | |
80656c20 | 158 | }; |
5aae2880 RR |
159 | |
160 | /** | |
161 | * struct tid_ampdu_rx - TID aggregation information (Rx). | |
162 | * | |
83eb935e MK |
163 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an |
164 | * A-MSDU with individually reported subframes. | |
4d050f1d | 165 | * @reorder_time: jiffies when skb was added |
5aae2880 | 166 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
2bff8ebf | 167 | * @reorder_timer: releases expired frames from the reorder buffer. |
12d3952f | 168 | * @last_rx: jiffies of last rx activity |
056cdd59 JB |
169 | * @head_seq_num: head sequence number in reordering buffer. |
170 | * @stored_mpdu_num: number of MPDUs in reordering buffer | |
cee24a3e RR |
171 | * @ssn: Starting Sequence Number expected to be aggregated. |
172 | * @buf_size: buffer size for incoming A-MPDUs | |
20ad19d0 | 173 | * @timeout: reset timer value (in TUs). |
cee24a3e | 174 | * @dialog_token: dialog token for aggregation session |
a87f736d | 175 | * @rcu_head: RCU head used for freeing this struct |
2bff8ebf | 176 | * @reorder_lock: serializes access to reorder buffer, see below. |
4549cf2b MK |
177 | * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and |
178 | * and ssn. | |
788211d8 | 179 | * @removed: this session is removed (but might have been found due to RCU) |
a87f736d | 180 | * |
dd318575 JB |
181 | * This structure's lifetime is managed by RCU, assignments to |
182 | * the array holding it must hold the aggregation mutex. | |
2bff8ebf | 183 | * |
dd318575 JB |
184 | * The @reorder_lock is used to protect the members of this |
185 | * struct, except for @timeout, @buf_size and @dialog_token, | |
186 | * which are constant across the lifetime of the struct (the | |
187 | * dialog token being used only for debugging). | |
5aae2880 RR |
188 | */ |
189 | struct tid_ampdu_rx { | |
a87f736d | 190 | struct rcu_head rcu_head; |
2bff8ebf | 191 | spinlock_t reorder_lock; |
83eb935e | 192 | struct sk_buff_head *reorder_buf; |
4d050f1d | 193 | unsigned long *reorder_time; |
5aae2880 | 194 | struct timer_list session_timer; |
2bff8ebf | 195 | struct timer_list reorder_timer; |
12d3952f | 196 | unsigned long last_rx; |
056cdd59 JB |
197 | u16 head_seq_num; |
198 | u16 stored_mpdu_num; | |
cee24a3e RR |
199 | u16 ssn; |
200 | u16 buf_size; | |
201 | u16 timeout; | |
202 | u8 dialog_token; | |
4549cf2b | 203 | bool auto_seq; |
788211d8 | 204 | bool removed; |
5aae2880 RR |
205 | }; |
206 | ||
fcea6007 JB |
207 | /** |
208 | * struct sta_ampdu_mlme - STA aggregation information. | |
209 | * | |
a87f736d | 210 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
fcea6007 | 211 | * @tid_tx: aggregation info for Tx per TID |
ec034b20 | 212 | * @tid_start_tx: sessions where start was requested |
fcea6007 | 213 | * @addba_req_num: number of times addBA request has been sent. |
84381b4e | 214 | * @last_addba_req_time: timestamp of the last addBA request. |
fcea6007 | 215 | * @dialog_token_allocator: dialog token enumerator for each new session; |
0ab33703 | 216 | * @work: work struct for starting/stopping aggregation |
7c3b1dd8 JB |
217 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
218 | * RX timer expired until the work for it runs | |
f41ccd71 SL |
219 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
220 | * driver requested to close until the work for it runs | |
a93e3644 JB |
221 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
222 | * to tid_tx[idx], which are protected by the sta spinlock) | |
e562078a | 223 | * tid_start_tx is also protected by sta->lock. |
fcea6007 JB |
224 | */ |
225 | struct sta_ampdu_mlme { | |
a93e3644 | 226 | struct mutex mtx; |
fcea6007 | 227 | /* rx */ |
5a306f58 JB |
228 | struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
229 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
230 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; | |
fcea6007 | 231 | /* tx */ |
0ab33703 | 232 | struct work_struct work; |
5a306f58 JB |
233 | struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
234 | struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; | |
235 | unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; | |
236 | u8 addba_req_num[IEEE80211_NUM_TIDS]; | |
fcea6007 JB |
237 | u8 dialog_token_allocator; |
238 | }; | |
239 | ||
240 | ||
b6da911b LK |
241 | /* Value to indicate no TID reservation */ |
242 | #define IEEE80211_TID_UNRESERVED 0xff | |
243 | ||
e495c247 JB |
244 | #define IEEE80211_FAST_XMIT_MAX_IV 18 |
245 | ||
17c18bf8 JB |
246 | /** |
247 | * struct ieee80211_fast_tx - TX fastpath information | |
248 | * @key: key to use for hw crypto | |
249 | * @hdr: the 802.11 header to put with the frame | |
250 | * @hdr_len: actual 802.11 header length | |
251 | * @sa_offs: offset of the SA | |
252 | * @da_offs: offset of the DA | |
253 | * @pn_offs: offset where to put PN for crypto (or 0 if not needed) | |
254 | * @band: band this will be transmitted on, for tx_info | |
255 | * @rcu_head: RCU head to free this struct | |
256 | * | |
e495c247 JB |
257 | * This struct is small enough so that the common case (maximum crypto |
258 | * header length of 8 like for CCMP/GCMP) fits into a single 64-byte | |
259 | * cache line. | |
17c18bf8 JB |
260 | */ |
261 | struct ieee80211_fast_tx { | |
262 | struct ieee80211_key *key; | |
17c18bf8 JB |
263 | u8 hdr_len; |
264 | u8 sa_offs, da_offs, pn_offs; | |
265 | u8 band; | |
e495c247 JB |
266 | u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + |
267 | sizeof(rfc1042_header)]; | |
17c18bf8 JB |
268 | |
269 | struct rcu_head rcu_head; | |
270 | }; | |
271 | ||
693b1bbc JB |
272 | /** |
273 | * struct sta_info - STA information | |
274 | * | |
275 | * This structure collects information about a station that | |
276 | * mac80211 is communicating with. | |
277 | * | |
278 | * @list: global linked list entry | |
d778207b | 279 | * @free_list: list entry for keeping track of stations to free |
7bedd0cf | 280 | * @hash_node: hash node for rhashtable |
693b1bbc | 281 | * @local: pointer to the global information |
e25cf4a6 | 282 | * @sdata: virtual interface this station belongs to |
2475b1cc MS |
283 | * @ptk: peer keys negotiated with this station, if any |
284 | * @ptk_idx: last installed peer key index | |
e31b8213 | 285 | * @gtk: group keys negotiated with this station, if any |
2475b1cc | 286 | * @gtk_idx: last installed group key index |
e25cf4a6 | 287 | * @rate_ctrl: rate control algorithm reference |
bbbe8c8c JB |
288 | * @rate_ctrl_lock: spinlock used to protect rate control data |
289 | * (data inside the algorithm, so serializes calls there) | |
e25cf4a6 JB |
290 | * @rate_ctrl_priv: rate control private per-STA pointer |
291 | * @last_tx_rate: rate used for last transmit, to report to userspace as | |
292 | * "the" transmit rate | |
3af6334c FF |
293 | * @last_rx_rate_idx: rx status rate index of the last data packet |
294 | * @last_rx_rate_flag: rx status flag of the last data packet | |
1b8d242a | 295 | * @last_rx_rate_vht_flag: rx status vht flag of the last data packet |
5614618e | 296 | * @last_rx_rate_vht_nss: rx status nss of last data packet |
6ef307bc RD |
297 | * @lock: used for locking all fields that require locking, see comments |
298 | * in the header file. | |
5ac2e350 | 299 | * @drv_deliver_wk: used for delivering frames after driver PS unblocking |
e25cf4a6 | 300 | * @listen_interval: listen interval of this station, when we're acting as AP |
c2c98fde | 301 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
1d147bfa | 302 | * @ps_lock: used for powersave (when mac80211 is the AP) related locking |
948d887d JB |
303 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
304 | * when it leaves power saving state or polls | |
305 | * @tx_filtered: buffers (per AC) of frames we already tried to | |
306 | * transmit but were filtered by hardware due to STA having | |
307 | * entered power saving state, these are also delivered to | |
308 | * the station when it leaves powersave or polls for frames | |
309 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on | |
ba8c3d6f | 310 | * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on |
693b1bbc JB |
311 | * @rx_packets: Number of MSDUs received from this STA |
312 | * @rx_bytes: Number of bytes received from this STA | |
e25cf4a6 | 313 | * @last_rx: time (in jiffies) when last frame was received from this STA |
ebe27c91 | 314 | * @last_connected: time (in seconds) when a station got connected |
6ef307bc RD |
315 | * @num_duplicates: number of duplicate frames received from this STA |
316 | * @rx_fragments: number of received MPDUs | |
317 | * @rx_dropped: number of dropped MPDUs from this STA | |
318 | * @last_signal: signal of last received frame from this STA | |
541a45a1 | 319 | * @avg_signal: moving average of signal of received frames from this STA |
db94357d | 320 | * @last_ack_signal: signal of last received Ack frame from this STA |
6ef307bc | 321 | * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
e25cf4a6 JB |
322 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
323 | * @tx_retry_failed: number of frames that failed retry | |
324 | * @tx_retry_count: total number of retries for frames to this STA | |
6ef307bc RD |
325 | * @fail_avg: moving percentage of failed MSDUs |
326 | * @tx_packets: number of RX/TX MSDUs | |
e25cf4a6 | 327 | * @tx_bytes: number of bytes transmitted to this STA |
e25cf4a6 JB |
328 | * @tid_seq: per-TID sequence numbers for sending to this STA |
329 | * @ampdu_mlme: A-MPDU state machine state | |
6ef307bc | 330 | * @timer_to_tid: identity mapping to ID timers |
48bf6bed | 331 | * @plink_lock: serialize access to plink fields |
6ef307bc RD |
332 | * @llid: Local link ID |
333 | * @plid: Peer link ID | |
334 | * @reason: Cancel reason on PLINK_HOLDING state | |
335 | * @plink_retries: Retries in establishment | |
e25cf4a6 JB |
336 | * @plink_state: peer link state |
337 | * @plink_timeout: timeout of peer link | |
338 | * @plink_timer: peer link watch timer | |
dbf498fb | 339 | * @t_offset: timing offset relative to this host |
1dd45581 AN |
340 | * @t_offset_setpoint: reference timing offset of this sta to be used when |
341 | * calculating clockdrift | |
3f52b7e3 MP |
342 | * @local_pm: local link-specific power save mode |
343 | * @peer_pm: peer-specific power save mode towards local STA | |
344 | * @nonpeer_pm: STA power save mode towards non-peer neighbors | |
6ef307bc | 345 | * @debugfs: debug filesystem info |
af818581 | 346 | * @dead: set to true when sta is unlinked |
34e89507 | 347 | * @uploaded: set to true when sta is uploaded to the driver |
99ba2a14 | 348 | * @lost_packets: number of consecutive lost packets |
2a33bee2 | 349 | * @sta: station information we share with the driver |
d9a7ddb0 | 350 | * @sta_state: duplicates information about station state (for debug) |
a85e1d55 | 351 | * @beacon_loss_count: number of times beacon loss has triggered |
077f897a | 352 | * @rcu_head: RCU head used for freeing this station struct |
0af83d3d JB |
353 | * @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
354 | * taken from HT/VHT capabilities or VHT operating mode notification | |
780b40df JB |
355 | * @chains: chains ever used for RX from this station |
356 | * @chain_signal_last: last signal (per chain) | |
357 | * @chain_signal_avg: signal average (per chain) | |
687da132 EG |
358 | * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
359 | * AP only. | |
2475b1cc | 360 | * @cipher_scheme: optional cipher scheme for this station |
8975ae88 | 361 | * @last_tdls_pkt_time: holds the time in jiffies of last TDLS pkt ACKed |
b6da911b | 362 | * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED) |
79c892b8 JB |
363 | * @tx_msdu: MSDUs transmitted to this station, using IEEE80211_NUM_TID |
364 | * entry for non-QoS frames | |
365 | * @tx_msdu_retries: MSDU retries for transmissions to to this station, | |
366 | * using IEEE80211_NUM_TID entry for non-QoS frames | |
367 | * @tx_msdu_failed: MSDU failures for transmissions to to this station, | |
368 | * using IEEE80211_NUM_TID entry for non-QoS frames | |
369 | * @rx_msdu: MSDUs received from this station, using IEEE80211_NUM_TID | |
370 | * entry for non-QoS frames | |
17c18bf8 | 371 | * @fast_tx: TX fastpath information |
693b1bbc | 372 | */ |
f0706e82 | 373 | struct sta_info { |
693b1bbc | 374 | /* General information, mostly static */ |
d778207b | 375 | struct list_head list, free_list; |
b22cfcfc | 376 | struct rcu_head rcu_head; |
7bedd0cf | 377 | struct rhash_head hash_node; |
f0706e82 | 378 | struct ieee80211_local *local; |
d0709a65 | 379 | struct ieee80211_sub_if_data *sdata; |
40b275b6 | 380 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
2475b1cc MS |
381 | struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
382 | u8 gtk_idx; | |
383 | u8 ptk_idx; | |
f0706e82 JB |
384 | struct rate_control_ref *rate_ctrl; |
385 | void *rate_ctrl_priv; | |
35c347ac | 386 | spinlock_t rate_ctrl_lock; |
07346f81 | 387 | spinlock_t lock; |
17741cdc | 388 | |
17c18bf8 JB |
389 | struct ieee80211_fast_tx __rcu *fast_tx; |
390 | ||
5ac2e350 | 391 | struct work_struct drv_deliver_wk; |
af818581 | 392 | |
693b1bbc | 393 | u16 listen_interval; |
f0706e82 | 394 | |
af818581 JB |
395 | bool dead; |
396 | ||
34e89507 | 397 | bool uploaded; |
693b1bbc | 398 | |
d9a7ddb0 JB |
399 | enum ieee80211_sta_state sta_state; |
400 | ||
c2c98fde JB |
401 | /* use the accessors defined below */ |
402 | unsigned long _flags; | |
693b1bbc | 403 | |
1d147bfa EG |
404 | /* STA powersave lock and frame queues */ |
405 | spinlock_t ps_lock; | |
948d887d JB |
406 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
407 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; | |
408 | unsigned long driver_buffered_tids; | |
ba8c3d6f | 409 | unsigned long txq_buffered_tids; |
693b1bbc JB |
410 | |
411 | /* Updated from RX path only, no locking requirements */ | |
560d2682 JB |
412 | unsigned long rx_packets; |
413 | u64 rx_bytes; | |
693b1bbc | 414 | unsigned long last_rx; |
ebe27c91 | 415 | long last_connected; |
6ef307bc RD |
416 | unsigned long num_duplicates; |
417 | unsigned long rx_fragments; | |
418 | unsigned long rx_dropped; | |
419 | int last_signal; | |
541a45a1 | 420 | struct ewma avg_signal; |
db94357d | 421 | int last_ack_signal; |
ef0621e8 FF |
422 | |
423 | u8 chains; | |
424 | s8 chain_signal_last[IEEE80211_MAX_CHAINS]; | |
425 | struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS]; | |
426 | ||
9e26297a | 427 | /* Plus 1 for non-QoS frames */ |
5a306f58 | 428 | __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
693b1bbc JB |
429 | |
430 | /* Updated from TX status path only, no locking requirements */ | |
431 | unsigned long tx_filtered_count; | |
432 | unsigned long tx_retry_failed, tx_retry_count; | |
693b1bbc JB |
433 | /* moving percentage of failed MSDUs */ |
434 | unsigned int fail_avg; | |
435 | ||
436 | /* Updated from TX path only, no locking requirements */ | |
560d2682 JB |
437 | u64 tx_packets[IEEE80211_NUM_ACS]; |
438 | u64 tx_bytes[IEEE80211_NUM_ACS]; | |
e6a9854b | 439 | struct ieee80211_tx_rate last_tx_rate; |
3af6334c | 440 | int last_rx_rate_idx; |
5614618e | 441 | u32 last_rx_rate_flag; |
1b8d242a | 442 | u32 last_rx_rate_vht_flag; |
5614618e | 443 | u8 last_rx_rate_vht_nss; |
f591fa5d | 444 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
79c892b8 JB |
445 | u64 tx_msdu[IEEE80211_NUM_TIDS + 1]; |
446 | u64 tx_msdu_retries[IEEE80211_NUM_TIDS + 1]; | |
447 | u64 tx_msdu_failed[IEEE80211_NUM_TIDS + 1]; | |
448 | u64 rx_msdu[IEEE80211_NUM_TIDS + 1]; | |
f0706e82 | 449 | |
d0709a65 | 450 | /* |
07346f81 | 451 | * Aggregation information, locked with lock. |
d0709a65 | 452 | */ |
5aae2880 | 453 | struct sta_ampdu_mlme ampdu_mlme; |
5a306f58 | 454 | u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
693b1bbc | 455 | |
ee385855 | 456 | #ifdef CONFIG_MAC80211_MESH |
693b1bbc | 457 | /* |
48bf6bed | 458 | * Mesh peer link attributes, protected by plink_lock. |
693b1bbc JB |
459 | * TODO: move to a sub-structure that is referenced with pointer? |
460 | */ | |
48bf6bed | 461 | spinlock_t plink_lock; |
6f101ef0 CYY |
462 | u16 llid; |
463 | u16 plid; | |
464 | u16 reason; | |
6ef307bc | 465 | u8 plink_retries; |
57cf8043 | 466 | enum nl80211_plink_state plink_state; |
ee385855 LCC |
467 | u32 plink_timeout; |
468 | struct timer_list plink_timer; | |
48bf6bed | 469 | |
dbf498fb JC |
470 | s64 t_offset; |
471 | s64 t_offset_setpoint; | |
3f52b7e3 MP |
472 | /* mesh power save */ |
473 | enum nl80211_mesh_power_mode local_pm; | |
474 | enum nl80211_mesh_power_mode peer_pm; | |
475 | enum nl80211_mesh_power_mode nonpeer_pm; | |
ee385855 | 476 | #endif |
10816d40 | 477 | |
e9f207f0 JB |
478 | #ifdef CONFIG_MAC80211_DEBUGFS |
479 | struct sta_info_debugfsdentries { | |
480 | struct dentry *dir; | |
63044e9f | 481 | bool add_has_run; |
e9f207f0 JB |
482 | } debugfs; |
483 | #endif | |
17741cdc | 484 | |
0af83d3d JB |
485 | enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
486 | ||
99ba2a14 | 487 | unsigned int lost_packets; |
a85e1d55 | 488 | unsigned int beacon_loss_count; |
99ba2a14 | 489 | |
687da132 | 490 | enum ieee80211_smps_mode known_smps_mode; |
2475b1cc | 491 | const struct ieee80211_cipher_scheme *cipher_scheme; |
687da132 | 492 | |
9d58f25b LK |
493 | /* TDLS timeout data */ |
494 | unsigned long last_tdls_pkt_time; | |
495 | ||
b6da911b LK |
496 | u8 reserved_tid; |
497 | ||
17741cdc JB |
498 | /* keep last! */ |
499 | struct ieee80211_sta sta; | |
f0706e82 JB |
500 | }; |
501 | ||
57cf8043 | 502 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
d6d1a5a7 JB |
503 | { |
504 | #ifdef CONFIG_MAC80211_MESH | |
505 | return sta->plink_state; | |
506 | #endif | |
57cf8043 | 507 | return NL80211_PLINK_LISTEN; |
d6d1a5a7 JB |
508 | } |
509 | ||
c2c98fde JB |
510 | static inline void set_sta_flag(struct sta_info *sta, |
511 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 512 | { |
d9a7ddb0 JB |
513 | WARN_ON(flag == WLAN_STA_AUTH || |
514 | flag == WLAN_STA_ASSOC || | |
515 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 516 | set_bit(flag, &sta->_flags); |
07346f81 JB |
517 | } |
518 | ||
c2c98fde JB |
519 | static inline void clear_sta_flag(struct sta_info *sta, |
520 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 521 | { |
d9a7ddb0 JB |
522 | WARN_ON(flag == WLAN_STA_AUTH || |
523 | flag == WLAN_STA_ASSOC || | |
524 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 525 | clear_bit(flag, &sta->_flags); |
07346f81 JB |
526 | } |
527 | ||
c2c98fde JB |
528 | static inline int test_sta_flag(struct sta_info *sta, |
529 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 530 | { |
c2c98fde | 531 | return test_bit(flag, &sta->_flags); |
07346f81 JB |
532 | } |
533 | ||
c2c98fde JB |
534 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
535 | enum ieee80211_sta_info_flags flag) | |
07346f81 | 536 | { |
d9a7ddb0 JB |
537 | WARN_ON(flag == WLAN_STA_AUTH || |
538 | flag == WLAN_STA_ASSOC || | |
539 | flag == WLAN_STA_AUTHORIZED); | |
c2c98fde | 540 | return test_and_clear_bit(flag, &sta->_flags); |
07346f81 JB |
541 | } |
542 | ||
e7f4a940 JB |
543 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
544 | enum ieee80211_sta_info_flags flag) | |
545 | { | |
d9a7ddb0 JB |
546 | WARN_ON(flag == WLAN_STA_AUTH || |
547 | flag == WLAN_STA_ASSOC || | |
548 | flag == WLAN_STA_AUTHORIZED); | |
e7f4a940 JB |
549 | return test_and_set_bit(flag, &sta->_flags); |
550 | } | |
551 | ||
83d5cc01 JB |
552 | int sta_info_move_state(struct sta_info *sta, |
553 | enum ieee80211_sta_state new_state); | |
d9a7ddb0 | 554 | |
83d5cc01 JB |
555 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
556 | enum ieee80211_sta_state new_state) | |
d9a7ddb0 | 557 | { |
83d5cc01 JB |
558 | int ret; |
559 | ||
560 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); | |
561 | ||
562 | ret = sta_info_move_state(sta, new_state); | |
d9a7ddb0 JB |
563 | WARN_ON_ONCE(ret); |
564 | } | |
565 | ||
566 | ||
ec034b20 JB |
567 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
568 | struct tid_ampdu_tx *tid_tx); | |
f0706e82 | 569 | |
40b275b6 JB |
570 | static inline struct tid_ampdu_tx * |
571 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) | |
572 | { | |
573 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], | |
574 | lockdep_is_held(&sta->lock) || | |
575 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
576 | } | |
f0706e82 | 577 | |
948d887d JB |
578 | /* Maximum number of frames to buffer per power saving station per AC */ |
579 | #define STA_MAX_TX_BUFFER 64 | |
f0706e82 JB |
580 | |
581 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
582 | * smaller than this value, the minimum value here is used instead. */ | |
583 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
584 | ||
585 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
586 | */ | |
587 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
588 | ||
d0709a65 | 589 | /* |
abe60632 | 590 | * Get a STA info, must be under RCU read lock. |
d0709a65 | 591 | */ |
abe60632 JB |
592 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
593 | const u8 *addr); | |
594 | ||
0e5ded5a FF |
595 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
596 | const u8 *addr); | |
597 | ||
7bedd0cf JB |
598 | u32 sta_addr_hash(const void *key, u32 length, u32 seed); |
599 | ||
600 | #define _sta_bucket_idx(_tbl, _a) \ | |
601 | rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd)) | |
abe60632 | 602 | |
7bedd0cf JB |
603 | #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \ |
604 | rht_for_each_entry_rcu(_sta, _tmp, tbl, \ | |
605 | _sta_bucket_idx(tbl, _addr), \ | |
606 | hash_node) \ | |
abe60632 | 607 | /* compare address and run code only if it matches */ \ |
3bc7945e | 608 | if (ether_addr_equal(_sta->sta.addr, (_addr))) |
abe60632 | 609 | |
d0709a65 JB |
610 | /* |
611 | * Get STA info by index, BROKEN! | |
612 | */ | |
3b53fde8 JB |
613 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
614 | int idx); | |
d0709a65 | 615 | /* |
73651ee6 JB |
616 | * Create a new STA info, caller owns returned structure |
617 | * until sta_info_insert(). | |
d0709a65 | 618 | */ |
73651ee6 | 619 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
56544160 | 620 | const u8 *addr, gfp_t gfp); |
d9a7ddb0 JB |
621 | |
622 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); | |
623 | ||
73651ee6 JB |
624 | /* |
625 | * Insert STA info into hash table/list, returns zero or a | |
626 | * -EEXIST if (if the same MAC address is already present). | |
627 | * | |
34e89507 JB |
628 | * Calling the non-rcu version makes the caller relinquish, |
629 | * the _rcu version calls read_lock_rcu() and must be called | |
630 | * without it held. | |
73651ee6 JB |
631 | */ |
632 | int sta_info_insert(struct sta_info *sta); | |
34e89507 | 633 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
34e89507 | 634 | |
83d5cc01 | 635 | int __must_check __sta_info_destroy(struct sta_info *sta); |
34e89507 JB |
636 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
637 | const u8 *addr); | |
638 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, | |
639 | const u8 *addr); | |
f0706e82 | 640 | |
c868cb35 | 641 | void sta_info_recalc_tim(struct sta_info *sta); |
004c872e | 642 | |
7bedd0cf | 643 | int sta_info_init(struct ieee80211_local *local); |
d0709a65 | 644 | void sta_info_stop(struct ieee80211_local *local); |
051007d9 JB |
645 | |
646 | /** | |
647 | * sta_info_flush - flush matching STA entries from the STA table | |
648 | * | |
649 | * Returns the number of removed STA entries. | |
650 | * | |
651 | * @sdata: sdata to remove all stations from | |
e716251d | 652 | * @vlans: if the given interface is an AP interface, also flush VLANs |
051007d9 | 653 | */ |
e716251d JB |
654 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
655 | ||
656 | static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) | |
657 | { | |
658 | return __sta_info_flush(sdata, false); | |
659 | } | |
051007d9 | 660 | |
6b62bf32 TP |
661 | void sta_set_rate_info_tx(struct sta_info *sta, |
662 | const struct ieee80211_tx_rate *rate, | |
663 | struct rate_info *rinfo); | |
003e676a S |
664 | void sta_set_rate_info_rx(struct sta_info *sta, |
665 | struct rate_info *rinfo); | |
b7ffbd7e JB |
666 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo); |
667 | ||
24723d1b JB |
668 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
669 | unsigned long exp_time); | |
687da132 | 670 | u8 sta_info_tx_streams(struct sta_info *sta); |
d0709a65 | 671 | |
af818581 JB |
672 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
673 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); | |
47086fc5 | 674 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
af818581 | 675 | |
f0706e82 | 676 | #endif /* STA_INFO_H */ |