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Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001/* SPDX-License-Identifier: GPL-2.0-only */
Jiri Bencf0706e82007-05-05 11:45:53 -07002/*
3 * Copyright 2002-2005, Devicescape Software, Inc.
Johannes Bergd98ad832014-09-03 15:24:57 +03004 * Copyright 2013-2014 Intel Mobile Communications GmbH
Johannes Bergda6a4352017-04-26 12:14:59 +02005 * Copyright(c) 2015-2017 Intel Deutschland GmbH
Jiri Bencf0706e82007-05-05 11:45:53 -07006 */
7
8#ifndef STA_INFO_H
9#define STA_INFO_H
10
11#include <linux/list.h>
12#include <linux/types.h>
13#include <linux/if_ether.h>
Johannes Bergaf818582009-11-06 11:35:50 +010014#include <linux/workqueue.h>
Bruno Randolf541a45a2010-12-02 19:12:43 +090015#include <linux/average.h>
Johannes Bergdcba6652017-04-26 14:51:20 +020016#include <linux/bitfield.h>
Felix Fietkau888d04d2012-03-01 15:22:09 +010017#include <linux/etherdevice.h>
Johannes Berg7bedd0c2015-02-13 21:55:15 +010018#include <linux/rhashtable.h>
Johannes Berg0f9c5a62016-03-31 20:02:09 +030019#include <linux/u64_stats_sync.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040020#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070021
Johannes Berg238814f2008-01-28 17:19:37 +010022/**
23 * enum ieee80211_sta_info_flags - Stations flags
24 *
Johannes Bergc2c98fd2011-09-29 16:04:36 +020025 * These flags are used with &struct sta_info's @flags member, but
26 * only indirectly with set_sta_flag() and friends.
Johannes Berg238814f2008-01-28 17:19:37 +010027 *
28 * @WLAN_STA_AUTH: Station is authenticated.
29 * @WLAN_STA_ASSOC: Station is associated.
Johannes Bergaf818582009-11-06 11:35:50 +010030 * @WLAN_STA_PS_STA: Station is in power-save mode
Johannes Berg238814f2008-01-28 17:19:37 +010031 * @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.
Johannes Berg238814f2008-01-28 17:19:37 +010036 * @WLAN_STA_WDS: Station is one of our WDS peers.
Johannes Bergd46e1442008-02-20 23:59:33 +010037 * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
Johannes Berge039fa42008-05-15 12:55:29 +020038 * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
Johannes Bergd46e1442008-02-20 23:59:33 +010039 * frame to this station is transmitted.
Jouni Malinen5394af42009-01-08 13:31:59 +020040 * @WLAN_STA_MFP: Management frame protection is used with this STA.
Johannes Berg618f3562010-04-06 11:18:46 +020041 * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
Johannes Berg098a6072010-04-06 11:18:47 +020042 * during suspend/resume and station removal.
Johannes Bergaf818582009-11-06 11:35:50 +010043 * @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.
Arik Nemtsov941c93c2011-09-28 14:12:54 +030048 * @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.
Arik Nemtsov626911c2014-07-17 17:14:17 +030051 * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this
52 * station.
Arik Nemtsov9041c1f2014-11-09 18:50:15 +020053 * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +020054 * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this
55 * TDLS peer
Arik Nemtsovb98fb442015-06-10 20:42:59 +030056 * @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on
57 * the BSS base channel.
Johannes Berg47086fc2011-09-29 16:04:33 +020058 * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
59 * keeping station in power-save mode, reply when the driver
60 * unblocks the station.
61 * @WLAN_STA_SP: Station is in a service period, so don't try to
Johannes Bergdeeaee192011-09-29 16:04:35 +020062 * reply to other uAPSD trigger frames or PS-Poll.
Johannes Berge7f4a942011-11-04 11:18:20 +010063 * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame.
Johannes Berg83d5cc02012-01-12 09:31:10 +010064 * @WLAN_STA_INSERTED: This station is inserted into the hash table.
Johannes Berge1936e92012-01-20 13:55:23 +010065 * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station.
Javier Cardonadbf498f2012-03-31 11:31:32 -070066 * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid.
Marco Porsch3f52b7e2013-01-30 18:14:08 +010067 * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period.
68 * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP.
Johannes Berg5ac2e352014-05-27 16:32:27 +020069 * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX
70 * until pending frames are delivered
Johannes Bergc84387d2016-03-17 15:02:54 +020071 *
72 * @NUM_WLAN_STA_FLAGS: number of defined flags
Johannes Berg238814f2008-01-28 17:19:37 +010073 */
74enum ieee80211_sta_info_flags {
Johannes Bergc2c98fd2011-09-29 16:04:36 +020075 WLAN_STA_AUTH,
76 WLAN_STA_ASSOC,
77 WLAN_STA_PS_STA,
78 WLAN_STA_AUTHORIZED,
79 WLAN_STA_SHORT_PREAMBLE,
Johannes Bergc2c98fd2011-09-29 16:04:36 +020080 WLAN_STA_WDS,
81 WLAN_STA_CLEAR_PS_FILT,
82 WLAN_STA_MFP,
83 WLAN_STA_BLOCK_BA,
84 WLAN_STA_PS_DRIVER,
85 WLAN_STA_PSPOLL,
86 WLAN_STA_TDLS_PEER,
87 WLAN_STA_TDLS_PEER_AUTH,
Arik Nemtsov626911c2014-07-17 17:14:17 +030088 WLAN_STA_TDLS_INITIATOR,
Arik Nemtsov9041c1f2014-11-09 18:50:15 +020089 WLAN_STA_TDLS_CHAN_SWITCH,
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +020090 WLAN_STA_TDLS_OFF_CHANNEL,
Arik Nemtsovb98fb442015-06-10 20:42:59 +030091 WLAN_STA_TDLS_WIDER_BW,
Johannes Bergc2c98fd2011-09-29 16:04:36 +020092 WLAN_STA_UAPSD,
93 WLAN_STA_SP,
Johannes Berge7f4a942011-11-04 11:18:20 +010094 WLAN_STA_4ADDR_EVENT,
Johannes Berg83d5cc02012-01-12 09:31:10 +010095 WLAN_STA_INSERTED,
Johannes Berge1936e92012-01-20 13:55:23 +010096 WLAN_STA_RATE_CONTROL,
Javier Cardonadbf498f2012-03-31 11:31:32 -070097 WLAN_STA_TOFFSET_KNOWN,
Marco Porsch3f52b7e2013-01-30 18:14:08 +010098 WLAN_STA_MPSP_OWNER,
99 WLAN_STA_MPSP_RECIPIENT,
Johannes Berg5ac2e352014-05-27 16:32:27 +0200100 WLAN_STA_PS_DELIVER,
Johannes Bergc84387d2016-03-17 15:02:54 +0200101
102 NUM_WLAN_STA_FLAGS,
Johannes Berg238814f2008-01-28 17:19:37 +0100103};
Jiri Bencf0706e82007-05-05 11:45:53 -0700104
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200105#define ADDBA_RESP_INTERVAL HZ
Nikolay Martynov84381b42011-12-17 19:39:35 -0500106#define HT_AGG_MAX_RETRIES 15
107#define HT_AGG_BURST_RETRIES 3
108#define HT_AGG_RETRIES_PERIOD (15 * HZ)
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200109
Johannes Berga622ab72010-06-10 10:21:39 +0200110#define HT_AGG_STATE_DRV_READY 0
111#define HT_AGG_STATE_RESPONSE_RECEIVED 1
112#define HT_AGG_STATE_OPERATIONAL 2
113#define HT_AGG_STATE_STOPPING 3
Johannes Berg0ab33702010-06-10 10:21:42 +0200114#define HT_AGG_STATE_WANT_START 4
115#define HT_AGG_STATE_WANT_STOP 5
Johannes Berg7a7c0a62017-05-27 00:27:25 +0200116#define HT_AGG_STATE_START_CB 6
117#define HT_AGG_STATE_STOP_CB 7
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200118
Balaji Pothunooricc60dbb2018-04-16 20:18:41 +0530119DECLARE_EWMA(avg_signal, 10, 8)
Johannes Bergc82c4a82012-07-18 13:31:31 +0200120enum ieee80211_agg_stop_reason {
121 AGG_STOP_DECLINED,
122 AGG_STOP_LOCAL_REQUEST,
123 AGG_STOP_PEER_REQUEST,
124 AGG_STOP_DESTROY_STA,
125};
126
Toke Høiland-Jørgensenb4809e92018-12-18 17:02:08 -0800127/* Debugfs flags to enable/disable use of RX/TX airtime in scheduler */
128#define AIRTIME_USE_TX BIT(0)
129#define AIRTIME_USE_RX BIT(1)
130
131struct airtime_info {
132 u64 rx_airtime;
133 u64 tx_airtime;
134 s64 deficit;
Kan Yan3ace10f2019-11-18 22:06:09 -0800135 atomic_t aql_tx_pending; /* Estimated airtime for frames pending */
136 u32 aql_limit_low;
137 u32 aql_limit_high;
Toke Høiland-Jørgensenb4809e92018-12-18 17:02:08 -0800138};
139
Kan Yan3ace10f2019-11-18 22:06:09 -0800140void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local,
141 struct sta_info *sta, u8 ac,
142 u16 tx_airtime, bool tx_completed);
143
Kees Cook7cca2ac2017-10-17 13:25:45 -0700144struct sta_info;
145
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200146/**
147 * struct tid_ampdu_tx - TID aggregation information (Tx).
148 *
Johannes Berga622ab72010-06-10 10:21:39 +0200149 * @rcu_head: rcu head for freeing structure
Nikolay Martynov285fa692011-11-22 21:50:28 -0500150 * @session_timer: check if we keep Tx-ing on the TID (by timeout value)
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200151 * @addba_resp_timer: timer for peer's response to addba request
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100152 * @pending: pending frames queue -- use sta's spinlock to protect
Kees Cook7cca2ac2017-10-17 13:25:45 -0700153 * @sta: station we are attached to
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200154 * @dialog_token: dialog token for aggregation session
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530155 * @timeout: session timeout value to be filled in ADDBA requests
Kees Cook7cca2ac2017-10-17 13:25:45 -0700156 * @tid: TID number
Johannes Berga622ab72010-06-10 10:21:39 +0200157 * @state: session state (see above)
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100158 * @last_tx: jiffies of last tx activity
Johannes Berga622ab72010-06-10 10:21:39 +0200159 * @stop_initiator: initiator of a session stop
Johannes Berg53f73c02010-10-05 19:37:40 +0200160 * @tx_stop: TX DelBA frame when stopping
Johannes Berg0b01f032011-01-18 13:51:05 +0100161 * @buf_size: reorder buffer size at receiver
Felix Fietkauf0425be2011-08-28 21:11:01 +0200162 * @failed_bar_ssn: ssn of the last failed BAR tx attempt
163 * @bar_pending: BAR needs to be re-sent
Emmanuel Grumbache3abc8f2015-08-16 11:13:22 +0300164 * @amsdu: support A-MSDU withing A-MDPU
Johannes Berga622ab72010-06-10 10:21:39 +0200165 *
Johannes Bergdd318572010-11-29 11:09:16 +0100166 * This structure's lifetime is managed by RCU, assignments to
167 * the array holding it must hold the aggregation mutex.
168 *
169 * The TX path can access it under RCU lock-free if, and
170 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
171 * set. Otherwise, the TX path must also acquire the spinlock
172 * and re-check the state, see comments in the tx code
173 * touching it.
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200174 */
175struct tid_ampdu_tx {
Johannes Berga622ab72010-06-10 10:21:39 +0200176 struct rcu_head rcu_head;
Nikolay Martynov285fa692011-11-22 21:50:28 -0500177 struct timer_list session_timer;
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200178 struct timer_list addba_resp_timer;
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100179 struct sk_buff_head pending;
Kees Cook7cca2ac2017-10-17 13:25:45 -0700180 struct sta_info *sta;
Johannes Berga622ab72010-06-10 10:21:39 +0200181 unsigned long state;
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100182 unsigned long last_tx;
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530183 u16 timeout;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200184 u8 dialog_token;
Johannes Berga622ab72010-06-10 10:21:39 +0200185 u8 stop_initiator;
Johannes Berg53f73c02010-10-05 19:37:40 +0200186 bool tx_stop;
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300187 u16 buf_size;
Felix Fietkauf0425be2011-08-28 21:11:01 +0200188
189 u16 failed_bar_ssn;
190 bool bar_pending;
Emmanuel Grumbache3abc8f2015-08-16 11:13:22 +0300191 bool amsdu;
Kees Cook7cca2ac2017-10-17 13:25:45 -0700192 u8 tid;
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200193};
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200194
195/**
196 * struct tid_ampdu_rx - TID aggregation information (Rx).
197 *
Michal Kazior83eb9352014-07-16 12:09:31 +0200198 * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
199 * A-MSDU with individually reported subframes.
Sara Sharon06470f72016-01-28 16:19:25 +0200200 * @reorder_buf_filtered: bitmap indicating where there are filtered frames in
201 * the reorder buffer that should be ignored when releasing frames
Jouni Malinen4d050f12009-05-05 20:35:14 +0300202 * @reorder_time: jiffies when skb was added
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200203 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
Christian Lamparter2bff8ebf2010-08-05 01:36:41 +0200204 * @reorder_timer: releases expired frames from the reorder buffer.
Kees Cook7cca2ac2017-10-17 13:25:45 -0700205 * @sta: station we are attached to
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100206 * @last_rx: jiffies of last rx activity
Johannes Berg056cdd52008-03-26 23:21:47 +0100207 * @head_seq_num: head sequence number in reordering buffer.
208 * @stored_mpdu_num: number of MPDUs in reordering buffer
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200209 * @ssn: Starting Sequence Number expected to be aggregated.
210 * @buf_size: buffer size for incoming A-MPDUs
Johannes Berg20ad19d2009-02-10 21:25:45 +0100211 * @timeout: reset timer value (in TUs).
Kees Cook7cca2ac2017-10-17 13:25:45 -0700212 * @tid: TID number
Johannes Berga87f7362010-06-10 10:21:38 +0200213 * @rcu_head: RCU head used for freeing this struct
Christian Lamparter2bff8ebf2010-08-05 01:36:41 +0200214 * @reorder_lock: serializes access to reorder buffer, see below.
Michal Kazior4549cf22014-09-02 14:05:10 +0200215 * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
216 * and ssn.
Johannes Berg788211d2015-04-01 14:20:42 +0200217 * @removed: this session is removed (but might have been found due to RCU)
Sara Sharonb7540d82017-02-06 15:28:42 +0200218 * @started: this session has started (head ssn or higher was received)
Johannes Berga87f7362010-06-10 10:21:38 +0200219 *
Johannes Bergdd318572010-11-29 11:09:16 +0100220 * This structure's lifetime is managed by RCU, assignments to
221 * the array holding it must hold the aggregation mutex.
Christian Lamparter2bff8ebf2010-08-05 01:36:41 +0200222 *
Johannes Bergdd318572010-11-29 11:09:16 +0100223 * The @reorder_lock is used to protect the members of this
224 * struct, except for @timeout, @buf_size and @dialog_token,
225 * which are constant across the lifetime of the struct (the
226 * dialog token being used only for debugging).
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200227 */
228struct tid_ampdu_rx {
Johannes Berga87f7362010-06-10 10:21:38 +0200229 struct rcu_head rcu_head;
Christian Lamparter2bff8ebf2010-08-05 01:36:41 +0200230 spinlock_t reorder_lock;
Sara Sharon06470f72016-01-28 16:19:25 +0200231 u64 reorder_buf_filtered;
Michal Kazior83eb9352014-07-16 12:09:31 +0200232 struct sk_buff_head *reorder_buf;
Jouni Malinen4d050f12009-05-05 20:35:14 +0300233 unsigned long *reorder_time;
Kees Cook7cca2ac2017-10-17 13:25:45 -0700234 struct sta_info *sta;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200235 struct timer_list session_timer;
Christian Lamparter2bff8ebf2010-08-05 01:36:41 +0200236 struct timer_list reorder_timer;
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100237 unsigned long last_rx;
Johannes Berg056cdd52008-03-26 23:21:47 +0100238 u16 head_seq_num;
239 u16 stored_mpdu_num;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200240 u16 ssn;
241 u16 buf_size;
242 u16 timeout;
Kees Cook7cca2ac2017-10-17 13:25:45 -0700243 u8 tid;
Sara Sharonb7540d82017-02-06 15:28:42 +0200244 u8 auto_seq:1,
245 removed:1,
246 started:1;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200247};
248
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800249/**
Johannes Bergfcea6002010-05-31 11:40:23 +0200250 * struct sta_ampdu_mlme - STA aggregation information.
251 *
Sara Sharon412a6d82015-12-08 19:09:05 +0200252 * @mtx: mutex to protect all TX data (except non-NULL assignments
253 * to tid_tx[idx], which are protected by the sta spinlock)
254 * tid_start_tx is also protected by sta->lock.
Johannes Berga87f7362010-06-10 10:21:38 +0200255 * @tid_rx: aggregation info for Rx per TID -- RCU protected
Johannes Berg1c3d1852016-10-18 23:12:08 +0300256 * @tid_rx_token: dialog tokens for valid aggregation sessions
Johannes Berg7c3b1dd2010-06-10 10:21:44 +0200257 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
258 * RX timer expired until the work for it runs
Shahar Levif41ccd72011-05-22 16:10:21 +0300259 * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the
260 * driver requested to close until the work for it runs
Johannes Berg699cb582017-05-30 16:34:46 +0200261 * @tid_rx_manage_offl: bitmap indicating which BA sessions were requested
262 * to be treated as started/stopped due to offloading
Sara Sharon412a6d82015-12-08 19:09:05 +0200263 * @agg_session_valid: bitmap indicating which TID has a rx BA session open on
Johannes Bergbfe40fa2016-08-29 23:25:18 +0300264 * @unexpected_agg: bitmap indicating which TID already sent a delBA due to
265 * unexpected aggregation related frames outside a session
Sara Sharon412a6d82015-12-08 19:09:05 +0200266 * @work: work struct for starting/stopping aggregation
267 * @tid_tx: aggregation info for Tx per TID
268 * @tid_start_tx: sessions where start was requested
269 * @last_addba_req_time: timestamp of the last addBA request.
270 * @addba_req_num: number of times addBA request has been sent.
271 * @dialog_token_allocator: dialog token enumerator for each new session;
Johannes Bergfcea6002010-05-31 11:40:23 +0200272 */
273struct sta_ampdu_mlme {
Johannes Berga93e3642010-06-10 10:21:46 +0200274 struct mutex mtx;
Johannes Bergfcea6002010-05-31 11:40:23 +0200275 /* rx */
Johannes Berg5a306f52012-11-14 23:22:21 +0100276 struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS];
Johannes Berg1c3d1852016-10-18 23:12:08 +0300277 u8 tid_rx_token[IEEE80211_NUM_TIDS];
Johannes Berg5a306f52012-11-14 23:22:21 +0100278 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
279 unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
Johannes Berg699cb582017-05-30 16:34:46 +0200280 unsigned long tid_rx_manage_offl[BITS_TO_LONGS(2 * IEEE80211_NUM_TIDS)];
Sara Sharon412a6d82015-12-08 19:09:05 +0200281 unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
Johannes Bergbfe40fa2016-08-29 23:25:18 +0300282 unsigned long unexpected_agg[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
Johannes Bergfcea6002010-05-31 11:40:23 +0200283 /* tx */
Johannes Berg0ab33702010-06-10 10:21:42 +0200284 struct work_struct work;
Johannes Berg5a306f52012-11-14 23:22:21 +0100285 struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS];
286 struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS];
287 unsigned long last_addba_req_time[IEEE80211_NUM_TIDS];
288 u8 addba_req_num[IEEE80211_NUM_TIDS];
Johannes Bergfcea6002010-05-31 11:40:23 +0200289 u8 dialog_token_allocator;
290};
291
292
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200293/* Value to indicate no TID reservation */
294#define IEEE80211_TID_UNRESERVED 0xff
295
Johannes Berge495c242015-04-10 14:03:17 +0200296#define IEEE80211_FAST_XMIT_MAX_IV 18
297
Johannes Bergfcea6002010-05-31 11:40:23 +0200298/**
Johannes Berg17c18bf2015-03-21 15:25:43 +0100299 * struct ieee80211_fast_tx - TX fastpath information
300 * @key: key to use for hw crypto
301 * @hdr: the 802.11 header to put with the frame
302 * @hdr_len: actual 802.11 header length
303 * @sa_offs: offset of the SA
304 * @da_offs: offset of the DA
305 * @pn_offs: offset where to put PN for crypto (or 0 if not needed)
306 * @band: band this will be transmitted on, for tx_info
307 * @rcu_head: RCU head to free this struct
308 *
Johannes Berge495c242015-04-10 14:03:17 +0200309 * This struct is small enough so that the common case (maximum crypto
310 * header length of 8 like for CCMP/GCMP) fits into a single 64-byte
311 * cache line.
Johannes Berg17c18bf2015-03-21 15:25:43 +0100312 */
313struct ieee80211_fast_tx {
314 struct ieee80211_key *key;
Johannes Berg17c18bf2015-03-21 15:25:43 +0100315 u8 hdr_len;
316 u8 sa_offs, da_offs, pn_offs;
317 u8 band;
Johannes Berge495c242015-04-10 14:03:17 +0200318 u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
Felix Fietkau6fe04122016-05-19 17:34:38 +0200319 sizeof(rfc1042_header)] __aligned(2);
Johannes Berg17c18bf2015-03-21 15:25:43 +0100320
321 struct rcu_head rcu_head;
322};
323
324/**
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300325 * struct ieee80211_fast_rx - RX fastpath information
326 * @dev: netdevice for reporting the SKB
327 * @vif_type: (P2P-less) interface type of the original sdata (sdata->vif.type)
328 * @vif_addr: interface address
329 * @rfc1042_hdr: copy of the RFC 1042 SNAP header (to have in cache)
330 * @control_port_protocol: control port protocol copied from sdata
331 * @expected_ds_bits: from/to DS bits expected
332 * @icv_len: length of the MIC if present
333 * @key: bool indicating encryption is expected (key is set)
334 * @sta_notify: notify the MLME code (once)
335 * @internal_forward: forward froms internally on AP/VLAN type interfaces
Johannes Bergc9c59622016-03-31 20:02:11 +0300336 * @uses_rss: copy of USES_RSS hw flag
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300337 * @da_offs: offset of the DA in the header (for header conversion)
338 * @sa_offs: offset of the SA in the header (for header conversion)
339 * @rcu_head: RCU head for freeing this structure
340 */
341struct ieee80211_fast_rx {
342 struct net_device *dev;
343 enum nl80211_iftype vif_type;
344 u8 vif_addr[ETH_ALEN] __aligned(2);
345 u8 rfc1042_hdr[6] __aligned(2);
346 __be16 control_port_protocol;
347 __le16 expected_ds_bits;
348 u8 icv_len;
349 u8 key:1,
350 sta_notify:1,
Johannes Bergc9c59622016-03-31 20:02:11 +0300351 internal_forward:1,
352 uses_rss:1;
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300353 u8 da_offs, sa_offs;
354
355 struct rcu_head rcu_head;
356};
357
Manoharan, Rajkumar3eb09282017-02-14 12:27:16 -0800358/* we use only values in the range 0-100, so pick a large precision */
359DECLARE_EWMA(mesh_fail_avg, 20, 8)
Julan Hsu67fc0552019-01-15 15:31:56 -0800360DECLARE_EWMA(mesh_tx_rate_avg, 8, 16)
Manoharan, Rajkumar3eb09282017-02-14 12:27:16 -0800361
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300362/**
Johannes Berg433f5bc2015-06-17 10:31:00 +0200363 * struct mesh_sta - mesh STA information
364 * @plink_lock: serialize access to plink fields
365 * @llid: Local link ID
366 * @plid: Peer link ID
Bob Copelanda69bd8e2015-07-14 08:31:58 -0400367 * @aid: local aid supplied by peer
Johannes Berg433f5bc2015-06-17 10:31:00 +0200368 * @reason: Cancel reason on PLINK_HOLDING state
369 * @plink_retries: Retries in establishment
370 * @plink_state: peer link state
371 * @plink_timeout: timeout of peer link
372 * @plink_timer: peer link watch timer
Kees Cook4c02d622017-10-05 10:39:10 -0700373 * @plink_sta: peer link watch timer's sta_info
Johannes Berg433f5bc2015-06-17 10:31:00 +0200374 * @t_offset: timing offset relative to this host
375 * @t_offset_setpoint: reference timing offset of this sta to be used when
376 * calculating clockdrift
377 * @local_pm: local link-specific power save mode
378 * @peer_pm: peer-specific power save mode towards local STA
379 * @nonpeer_pm: STA power save mode towards non-peer neighbors
380 * @processed_beacon: set to true after peer rates and capabilities are
381 * processed
Bob Copelanddbdaee72018-10-25 15:48:53 -0400382 * @connected_to_gate: true if mesh STA has a path to a mesh gate
Johannes Berga76d5e02015-06-18 16:20:08 +0200383 * @fail_avg: moving percentage of failed MSDUs
Julan Hsu67fc0552019-01-15 15:31:56 -0800384 * @tx_rate_avg: moving average of tx bitrate
Johannes Berg433f5bc2015-06-17 10:31:00 +0200385 */
386struct mesh_sta {
387 struct timer_list plink_timer;
Kees Cook4c02d622017-10-05 10:39:10 -0700388 struct sta_info *plink_sta;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200389
390 s64 t_offset;
391 s64 t_offset_setpoint;
392
393 spinlock_t plink_lock;
394 u16 llid;
395 u16 plid;
Bob Copelanda69bd8e2015-07-14 08:31:58 -0400396 u16 aid;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200397 u16 reason;
398 u8 plink_retries;
399
400 bool processed_beacon;
Bob Copelanddbdaee72018-10-25 15:48:53 -0400401 bool connected_to_gate;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200402
403 enum nl80211_plink_state plink_state;
404 u32 plink_timeout;
405
406 /* mesh power save */
407 enum nl80211_mesh_power_mode local_pm;
408 enum nl80211_mesh_power_mode peer_pm;
409 enum nl80211_mesh_power_mode nonpeer_pm;
Johannes Berga76d5e02015-06-18 16:20:08 +0200410
411 /* moving percentage of failed MSDUs */
Manoharan, Rajkumar3eb09282017-02-14 12:27:16 -0800412 struct ewma_mesh_fail_avg fail_avg;
Julan Hsu67fc0552019-01-15 15:31:56 -0800413 /* moving average of tx bitrate */
414 struct ewma_mesh_tx_rate_avg tx_rate_avg;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200415};
416
Johannes Bergeb1e0112017-02-15 09:49:26 +0100417DECLARE_EWMA(signal, 10, 8)
Johannes Berg40d9a382015-07-13 12:26:46 +0200418
Johannes Bergc9c59622016-03-31 20:02:11 +0300419struct ieee80211_sta_rx_stats {
420 unsigned long packets;
421 unsigned long last_rx;
422 unsigned long num_duplicates;
423 unsigned long fragments;
424 unsigned long dropped;
425 int last_signal;
426 u8 chains;
427 s8 chain_signal_last[IEEE80211_MAX_CHAINS];
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300428 u32 last_rate;
Johannes Bergc9c59622016-03-31 20:02:11 +0300429 struct u64_stats_sync syncp;
430 u64 bytes;
431 u64 msdu[IEEE80211_NUM_TIDS + 1];
432};
433
Stanislaw Gruszka8f797c22017-09-26 13:48:05 +0200434/*
Toke Høiland-Jørgensen484a54c2017-04-06 11:38:26 +0200435 * The bandwidth threshold below which the per-station CoDel parameters will be
436 * scaled to be more lenient (to prevent starvation of slow stations). This
437 * value will be scaled by the number of active stations when it is being
438 * applied.
439 */
440#define STA_SLOW_THRESHOLD 6000 /* 6 Mbps */
441
442/**
Johannes Berg693b1bb2008-02-25 16:27:48 +0100443 * struct sta_info - STA information
444 *
445 * This structure collects information about a station that
446 * mac80211 is communicating with.
447 *
448 * @list: global linked list entry
Johannes Bergd7782072013-12-04 23:12:31 +0100449 * @free_list: list entry for keeping track of stations to free
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100450 * @hash_node: hash node for rhashtable
Johannes Bergac100ce2015-06-16 16:22:12 +0200451 * @addr: station's MAC address - duplicated from public part to
452 * let the hash table work with just a single cacheline
Johannes Berg693b1bb2008-02-25 16:27:48 +0100453 * @local: pointer to the global information
Johannes Berge25cf4a2008-10-23 08:51:20 +0200454 * @sdata: virtual interface this station belongs to
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200455 * @ptk: peer keys negotiated with this station, if any
456 * @ptk_idx: last installed peer key index
Johannes Berge31b8212010-10-05 19:39:30 +0200457 * @gtk: group keys negotiated with this station, if any
Johannes Berge25cf4a2008-10-23 08:51:20 +0200458 * @rate_ctrl: rate control algorithm reference
Johannes Bergbbbe8c82015-05-06 16:00:32 +0200459 * @rate_ctrl_lock: spinlock used to protect rate control data
460 * (data inside the algorithm, so serializes calls there)
Johannes Berge25cf4a2008-10-23 08:51:20 +0200461 * @rate_ctrl_priv: rate control private per-STA pointer
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700462 * @lock: used for locking all fields that require locking, see comments
463 * in the header file.
Johannes Berg5ac2e352014-05-27 16:32:27 +0200464 * @drv_deliver_wk: used for delivering frames after driver PS unblocking
Johannes Berge25cf4a2008-10-23 08:51:20 +0200465 * @listen_interval: listen interval of this station, when we're acting as AP
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200466 * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
Emmanuel Grumbach1d147bf2014-02-20 09:22:11 +0200467 * @ps_lock: used for powersave (when mac80211 is the AP) related locking
Johannes Berg948d8872011-09-29 16:04:29 +0200468 * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
469 * when it leaves power saving state or polls
470 * @tx_filtered: buffers (per AC) of frames we already tried to
471 * transmit but were filtered by hardware due to STA having
472 * entered power saving state, these are also delivered to
473 * the station when it leaves powersave or polls for frames
474 * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
Felix Fietkauba8c3d62015-03-27 21:30:37 +0100475 * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
Ben Greear9cf02332019-08-09 11:00:01 -0700476 * @assoc_at: clock boottime (in ns) of last association
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530477 * @last_connected: time (in seconds) when a station got connected
Johannes Berg798a4572015-06-16 15:58:22 +0200478 * @last_seq_ctrl: last received seq/frag number from this STA (per TID
479 * plus one for non-QoS frames)
Johannes Berge25cf4a2008-10-23 08:51:20 +0200480 * @tid_seq: per-TID sequence numbers for sending to this STA
Toke Høiland-Jørgensencb868802019-01-29 11:31:26 +0100481 * @airtime: per-AC struct airtime_info describing airtime statistics for this
482 * station
483 * @airtime_weight: station weight for airtime fairness calculation purposes
Johannes Berge25cf4a2008-10-23 08:51:20 +0200484 * @ampdu_mlme: A-MPDU state machine state
Johannes Berg433f5bc2015-06-17 10:31:00 +0200485 * @mesh: mesh STA information
Johannes Bergfc4a25c2016-04-05 11:59:05 +0200486 * @debugfs_dir: debug filesystem directory dentry
Johannes Bergaf818582009-11-06 11:35:50 +0100487 * @dead: set to true when sta is unlinked
Eliad Pelleref044762015-11-17 10:24:37 +0200488 * @removed: set to true when sta is being removed from sta_list
Johannes Berg34e89502010-02-03 13:59:58 +0100489 * @uploaded: set to true when sta is uploaded to the driver
Guy Eilam2a33bee2011-08-17 15:18:15 +0300490 * @sta: station information we share with the driver
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100491 * @sta_state: duplicates information about station state (for debug)
Johannes Berg077f8972013-02-08 09:06:36 +0100492 * @rcu_head: RCU head used for freeing this station struct
Johannes Berg0af83d32012-12-27 18:55:36 +0100493 * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
494 * taken from HT/VHT capabilities or VHT operating mode notification
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300495 * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
496 * AP only.
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200497 * @cipher_scheme: optional cipher scheme for this station
Toke Høiland-Jørgensen484a54c2017-04-06 11:38:26 +0200498 * @cparams: CoDel parameters for this station.
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200499 * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
Johannes Berg17c18bf2015-03-21 15:25:43 +0100500 * @fast_tx: TX fastpath information
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300501 * @fast_rx: RX fastpath information
Arik Nemtsov0fabfaa2015-06-10 20:41:23 +0300502 * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
503 * the BSS one.
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200504 * @tx_stats: TX statistics
Johannes Berg7d419462019-02-01 11:53:32 +0100505 * @tx_stats.packets: # of packets transmitted
506 * @tx_stats.bytes: # of bytes in all packets transmitted
507 * @tx_stats.last_rate: last TX rate
508 * @tx_stats.msdu: # of transmitted MSDUs per TID
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200509 * @rx_stats: RX statistics
Johannes Berg7d419462019-02-01 11:53:32 +0100510 * @rx_stats_avg: averaged RX statistics
511 * @rx_stats_avg.signal: averaged signal
512 * @rx_stats_avg.chain_signal: averaged per-chain signal
Johannes Bergc9c59622016-03-31 20:02:11 +0300513 * @pcpu_rx_stats: per-CPU RX statistics, assigned only if the driver needs
514 * this (by advertising the USES_RSS hw flag)
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200515 * @status_stats: TX status statistics
Johannes Berg7d419462019-02-01 11:53:32 +0100516 * @status_stats.filtered: # of filtered frames
517 * @status_stats.retry_failed: # of frames that failed after retry
518 * @status_stats.retry_count: # of retries attempted
519 * @status_stats.lost_packets: # of lost packets
520 * @status_stats.last_tdls_pkt_time: timestamp of last TDLS packet
521 * @status_stats.msdu_retries: # of MSDU retries
522 * @status_stats.msdu_failed: # of failed MSDUs
523 * @status_stats.last_ack: last ack timestamp (jiffies)
524 * @status_stats.last_ack_signal: last ACK signal
525 * @status_stats.ack_signal_filled: last ACK signal validity
526 * @status_stats.avg_ack_signal: average ACK signal
Johannes Berg693b1bb2008-02-25 16:27:48 +0100527 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700528struct sta_info {
Johannes Berg693b1bb2008-02-25 16:27:48 +0100529 /* General information, mostly static */
Johannes Bergd7782072013-12-04 23:12:31 +0100530 struct list_head list, free_list;
Eliad Pellerb22cfcf2012-09-09 14:43:51 +0300531 struct rcu_head rcu_head;
Herbert Xu83e7e4c2016-09-19 19:00:10 +0800532 struct rhlist_head hash_node;
Johannes Bergac100ce2015-06-16 16:22:12 +0200533 u8 addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700534 struct ieee80211_local *local;
Johannes Bergd0709a62008-02-25 16:27:46 +0100535 struct ieee80211_sub_if_data *sdata;
Johannes Berg40b275b2011-05-13 14:15:49 +0200536 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200537 struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS];
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200538 u8 ptk_idx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700539 struct rate_control_ref *rate_ctrl;
540 void *rate_ctrl_priv;
Johannes Berg35c347a2015-03-05 16:10:08 +0100541 spinlock_t rate_ctrl_lock;
Johannes Berg07346f812008-05-03 01:02:02 +0200542 spinlock_t lock;
Johannes Berg17741cd2008-09-11 00:02:02 +0200543
Johannes Berg17c18bf2015-03-21 15:25:43 +0100544 struct ieee80211_fast_tx __rcu *fast_tx;
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300545 struct ieee80211_fast_rx __rcu *fast_rx;
Johannes Bergc9c59622016-03-31 20:02:11 +0300546 struct ieee80211_sta_rx_stats __percpu *pcpu_rx_stats;
Johannes Berg17c18bf2015-03-21 15:25:43 +0100547
Johannes Berg433f5bc2015-06-17 10:31:00 +0200548#ifdef CONFIG_MAC80211_MESH
549 struct mesh_sta *mesh;
550#endif
551
Johannes Berg5ac2e352014-05-27 16:32:27 +0200552 struct work_struct drv_deliver_wk;
Johannes Bergaf818582009-11-06 11:35:50 +0100553
Jiri Bencf0706e82007-05-05 11:45:53 -0700554 u16 listen_interval;
Jiri Bence9f207f2007-05-05 11:46:38 -0700555
Johannes Bergaf818582009-11-06 11:35:50 +0100556 bool dead;
Eliad Pelleref044762015-11-17 10:24:37 +0200557 bool removed;
Johannes Bergaf818582009-11-06 11:35:50 +0100558
Johannes Berg34e89502010-02-03 13:59:58 +0100559 bool uploaded;
Johannes Bergd0709a62008-02-25 16:27:46 +0100560
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100561 enum ieee80211_sta_state sta_state;
562
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200563 /* use the accessors defined below */
564 unsigned long _flags;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100565
Emmanuel Grumbach1d147bf2014-02-20 09:22:11 +0200566 /* STA powersave lock and frame queues */
567 spinlock_t ps_lock;
Johannes Berg948d8872011-09-29 16:04:29 +0200568 struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
569 struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
570 unsigned long driver_buffered_tids;
Felix Fietkauba8c3d62015-03-27 21:30:37 +0100571 unsigned long txq_buffered_tids;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100572
Ben Greear9cf02332019-08-09 11:00:01 -0700573 u64 assoc_at;
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530574 long last_connected;
Felix Fietkauef0621e2013-04-22 16:29:31 +0200575
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200576 /* Updated from RX path only, no locking requirements */
Johannes Bergc9c59622016-03-31 20:02:11 +0300577 struct ieee80211_sta_rx_stats rx_stats;
Johannes Berg0be6ed12016-03-31 20:02:05 +0300578 struct {
579 struct ewma_signal signal;
580 struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS];
581 } rx_stats_avg;
Felix Fietkauef0621e2013-04-22 16:29:31 +0200582
Johannes Berg9e262972011-07-07 18:45:03 +0200583 /* Plus 1 for non-QoS frames */
Johannes Berg5a306f52012-11-14 23:22:21 +0100584 __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100585
586 /* Updated from TX status path only, no locking requirements */
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200587 struct {
588 unsigned long filtered;
589 unsigned long retry_failed, retry_count;
590 unsigned int lost_packets;
591 unsigned long last_tdls_pkt_time;
592 u64 msdu_retries[IEEE80211_NUM_TIDS + 1];
593 u64 msdu_failed[IEEE80211_NUM_TIDS + 1];
Johannes Bergb8da6b62016-03-31 20:02:07 +0300594 unsigned long last_ack;
Venkateswara Naralasettya78b26f2018-02-13 11:04:46 +0530595 s8 last_ack_signal;
596 bool ack_signal_filled;
Balaji Pothunooricc60dbb2018-04-16 20:18:41 +0530597 struct ewma_avg_signal avg_ack_signal;
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200598 } status_stats;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100599
600 /* Updated from TX path only, no locking requirements */
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200601 struct {
602 u64 packets[IEEE80211_NUM_ACS];
603 u64 bytes[IEEE80211_NUM_ACS];
604 struct ieee80211_tx_rate last_rate;
605 u64 msdu[IEEE80211_NUM_TIDS + 1];
606 } tx_stats;
Johannes Bergf591fa52008-07-10 11:21:26 +0200607 u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100608
Toke Høiland-Jørgensenb4809e92018-12-18 17:02:08 -0800609 struct airtime_info airtime[IEEE80211_NUM_ACS];
610 u16 airtime_weight;
611
Johannes Berg693b1bb2008-02-25 16:27:48 +0100612 /*
Johannes Berg07346f812008-05-03 01:02:02 +0200613 * Aggregation information, locked with lock.
Johannes Berg693b1bb2008-02-25 16:27:48 +0100614 */
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200615 struct sta_ampdu_mlme ampdu_mlme;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100616
Jiri Bence9f207f2007-05-05 11:46:38 -0700617#ifdef CONFIG_MAC80211_DEBUGFS
Johannes Bergfc4a25c2016-04-05 11:59:05 +0200618 struct dentry *debugfs_dir;
Jiri Bence9f207f2007-05-05 11:46:38 -0700619#endif
Johannes Berg17741cd2008-09-11 00:02:02 +0200620
Johannes Berg0af83d32012-12-27 18:55:36 +0100621 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth;
622
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300623 enum ieee80211_smps_mode known_smps_mode;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200624 const struct ieee80211_cipher_scheme *cipher_scheme;
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300625
Toke Høiland-Jørgensen484a54c2017-04-06 11:38:26 +0200626 struct codel_params cparams;
627
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200628 u8 reserved_tid;
629
Arik Nemtsov0fabfaa2015-06-10 20:41:23 +0300630 struct cfg80211_chan_def tdls_chandef;
631
Johannes Berg17741cd2008-09-11 00:02:02 +0200632 /* keep last! */
633 struct ieee80211_sta sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700634};
635
Javier Cardona57cf8042011-05-13 10:45:43 -0700636static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta)
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100637{
638#ifdef CONFIG_MAC80211_MESH
Johannes Berg433f5bc2015-06-17 10:31:00 +0200639 return sta->mesh->plink_state;
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100640#endif
Javier Cardona57cf8042011-05-13 10:45:43 -0700641 return NL80211_PLINK_LISTEN;
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100642}
643
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200644static inline void set_sta_flag(struct sta_info *sta,
645 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200646{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100647 WARN_ON(flag == WLAN_STA_AUTH ||
648 flag == WLAN_STA_ASSOC ||
649 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200650 set_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200651}
652
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200653static inline void clear_sta_flag(struct sta_info *sta,
654 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200655{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100656 WARN_ON(flag == WLAN_STA_AUTH ||
657 flag == WLAN_STA_ASSOC ||
658 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200659 clear_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200660}
661
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200662static inline int test_sta_flag(struct sta_info *sta,
663 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200664{
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200665 return test_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200666}
667
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200668static inline int test_and_clear_sta_flag(struct sta_info *sta,
669 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200670{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100671 WARN_ON(flag == WLAN_STA_AUTH ||
672 flag == WLAN_STA_ASSOC ||
673 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200674 return test_and_clear_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200675}
676
Johannes Berge7f4a942011-11-04 11:18:20 +0100677static inline int test_and_set_sta_flag(struct sta_info *sta,
678 enum ieee80211_sta_info_flags flag)
679{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100680 WARN_ON(flag == WLAN_STA_AUTH ||
681 flag == WLAN_STA_ASSOC ||
682 flag == WLAN_STA_AUTHORIZED);
Johannes Berge7f4a942011-11-04 11:18:20 +0100683 return test_and_set_bit(flag, &sta->_flags);
684}
685
Johannes Berg83d5cc02012-01-12 09:31:10 +0100686int sta_info_move_state(struct sta_info *sta,
687 enum ieee80211_sta_state new_state);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100688
Johannes Berg83d5cc02012-01-12 09:31:10 +0100689static inline void sta_info_pre_move_state(struct sta_info *sta,
690 enum ieee80211_sta_state new_state)
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100691{
Johannes Berg83d5cc02012-01-12 09:31:10 +0100692 int ret;
693
694 WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED));
695
696 ret = sta_info_move_state(sta, new_state);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100697 WARN_ON_ONCE(ret);
698}
699
700
Johannes Bergec034b22011-05-13 13:35:40 +0200701void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
702 struct tid_ampdu_tx *tid_tx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700703
Johannes Berg40b275b2011-05-13 14:15:49 +0200704static inline struct tid_ampdu_tx *
705rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
706{
707 return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid],
708 lockdep_is_held(&sta->lock) ||
709 lockdep_is_held(&sta->ampdu_mlme.mtx));
710}
Jiri Bencf0706e82007-05-05 11:45:53 -0700711
Johannes Berg948d8872011-09-29 16:04:29 +0200712/* Maximum number of frames to buffer per power saving station per AC */
713#define STA_MAX_TX_BUFFER 64
Jiri Bencf0706e82007-05-05 11:45:53 -0700714
715/* Minimum buffered frame expiry time. If STA uses listen interval that is
716 * smaller than this value, the minimum value here is used instead. */
717#define STA_TX_BUFFER_EXPIRE (10 * HZ)
718
719/* How often station data is cleaned up (e.g., expiration of buffered frames)
720 */
721#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
722
Herbert Xu83e7e4c2016-09-19 19:00:10 +0800723struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local,
724 const u8 *addr);
725
Johannes Bergd0709a62008-02-25 16:27:46 +0100726/*
Johannes Bergabe60632009-11-25 17:46:18 +0100727 * Get a STA info, must be under RCU read lock.
Johannes Bergd0709a62008-02-25 16:27:46 +0100728 */
Johannes Bergabe60632009-11-25 17:46:18 +0100729struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
730 const u8 *addr);
731
Felix Fietkau0e5ded52010-01-08 18:10:58 +0100732struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
733 const u8 *addr);
734
Toke Høiland-Jørgensen5072f732019-11-12 14:08:35 +0100735/* user must hold sta_mtx or be in RCU critical section */
736struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local,
737 const u8 *sta_addr, const u8 *vif_addr);
738
Herbert Xu83e7e4c2016-09-19 19:00:10 +0800739#define for_each_sta_info(local, _addr, _sta, _tmp) \
740 rhl_for_each_entry_rcu(_sta, _tmp, \
741 sta_info_hash_lookup(local, _addr), hash_node)
Johannes Bergabe60632009-11-25 17:46:18 +0100742
Johannes Bergd0709a62008-02-25 16:27:46 +0100743/*
744 * Get STA info by index, BROKEN!
745 */
Johannes Berg3b53fde82009-11-16 12:00:37 +0100746struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
747 int idx);
Johannes Bergd0709a62008-02-25 16:27:46 +0100748/*
Johannes Berg73651ee2008-02-25 16:27:47 +0100749 * Create a new STA info, caller owns returned structure
750 * until sta_info_insert().
Johannes Bergd0709a62008-02-25 16:27:46 +0100751 */
Johannes Berg73651ee2008-02-25 16:27:47 +0100752struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
Johannes Berg56544162011-12-14 13:28:46 +0100753 const u8 *addr, gfp_t gfp);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100754
755void sta_info_free(struct ieee80211_local *local, struct sta_info *sta);
756
Johannes Berg73651ee2008-02-25 16:27:47 +0100757/*
758 * Insert STA info into hash table/list, returns zero or a
759 * -EEXIST if (if the same MAC address is already present).
760 *
Johannes Berg34e89502010-02-03 13:59:58 +0100761 * Calling the non-rcu version makes the caller relinquish,
762 * the _rcu version calls read_lock_rcu() and must be called
763 * without it held.
Johannes Berg73651ee2008-02-25 16:27:47 +0100764 */
765int sta_info_insert(struct sta_info *sta);
Johannes Berg34e89502010-02-03 13:59:58 +0100766int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
Johannes Bergd0709a62008-02-25 16:27:46 +0100767
Johannes Berg83d5cc02012-01-12 09:31:10 +0100768int __must_check __sta_info_destroy(struct sta_info *sta);
Johannes Berg34e89502010-02-03 13:59:58 +0100769int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
770 const u8 *addr);
771int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
772 const u8 *addr);
773
Johannes Bergc868cb352011-09-29 16:04:27 +0200774void sta_info_recalc_tim(struct sta_info *sta);
Johannes Bergd0709a62008-02-25 16:27:46 +0100775
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100776int sta_info_init(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700777void sta_info_stop(struct ieee80211_local *local);
Johannes Berg051007d2012-12-13 23:49:02 +0100778
779/**
780 * sta_info_flush - flush matching STA entries from the STA table
781 *
782 * Returns the number of removed STA entries.
783 *
784 * @sdata: sdata to remove all stations from
Johannes Berge7162512013-12-04 23:18:37 +0100785 * @vlans: if the given interface is an AP interface, also flush VLANs
Johannes Berg051007d2012-12-13 23:49:02 +0100786 */
Johannes Berge7162512013-12-04 23:18:37 +0100787int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans);
788
789static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata)
790{
791 return __sta_info_flush(sdata, false);
792}
Johannes Berg051007d2012-12-13 23:49:02 +0100793
Thomas Pedersen6b62bf32012-03-05 15:31:48 -0800794void sta_set_rate_info_tx(struct sta_info *sta,
795 const struct ieee80211_tx_rate *rate,
796 struct rate_info *rinfo);
Johannes Berg0fdf1492018-05-18 11:40:44 +0200797void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
798 bool tidstats);
Johannes Bergb7ffbd72014-06-04 17:31:56 +0200799
Maxim Altshul3b17fbf2016-07-11 17:15:24 +0300800u32 sta_get_expected_throughput(struct sta_info *sta);
801
Johannes Berg24723d12008-09-11 00:01:46 +0200802void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
803 unsigned long exp_time);
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300804u8 sta_info_tx_streams(struct sta_info *sta);
Johannes Berg004c8722008-02-20 11:21:35 +0100805
Johannes Bergaf818582009-11-06 11:35:50 +0100806void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
807void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
Johannes Berg47086fc2011-09-29 16:04:33 +0200808void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta);
Johannes Bergaf818582009-11-06 11:35:50 +0100809
Johannes Bergb8da6b62016-03-31 20:02:07 +0300810unsigned long ieee80211_sta_last_active(struct sta_info *sta);
811
Johannes Bergdcba6652017-04-26 14:51:20 +0200812enum sta_stats_type {
813 STA_STATS_RATE_TYPE_INVALID = 0,
814 STA_STATS_RATE_TYPE_LEGACY,
815 STA_STATS_RATE_TYPE_HT,
816 STA_STATS_RATE_TYPE_VHT,
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300817 STA_STATS_RATE_TYPE_HE,
Johannes Bergdcba6652017-04-26 14:51:20 +0200818};
819
820#define STA_STATS_FIELD_HT_MCS GENMASK( 7, 0)
821#define STA_STATS_FIELD_LEGACY_IDX GENMASK( 3, 0)
822#define STA_STATS_FIELD_LEGACY_BAND GENMASK( 7, 4)
823#define STA_STATS_FIELD_VHT_MCS GENMASK( 3, 0)
824#define STA_STATS_FIELD_VHT_NSS GENMASK( 7, 4)
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300825#define STA_STATS_FIELD_HE_MCS GENMASK( 3, 0)
826#define STA_STATS_FIELD_HE_NSS GENMASK( 7, 4)
Johannes Bergdcba6652017-04-26 14:51:20 +0200827#define STA_STATS_FIELD_BW GENMASK(11, 8)
828#define STA_STATS_FIELD_SGI GENMASK(12, 12)
829#define STA_STATS_FIELD_TYPE GENMASK(15, 13)
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300830#define STA_STATS_FIELD_HE_RU GENMASK(18, 16)
831#define STA_STATS_FIELD_HE_GI GENMASK(20, 19)
832#define STA_STATS_FIELD_HE_DCM GENMASK(21, 21)
Johannes Bergdcba6652017-04-26 14:51:20 +0200833
834#define STA_STATS_FIELD(_n, _v) FIELD_PREP(STA_STATS_FIELD_ ## _n, _v)
835#define STA_STATS_GET(_n, _v) FIELD_GET(STA_STATS_FIELD_ ## _n, _v)
836
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300837#define STA_STATS_RATE_INVALID 0
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300838
Johannes Bergdcba6652017-04-26 14:51:20 +0200839static inline u32 sta_stats_encode_rate(struct ieee80211_rx_status *s)
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300840{
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300841 u32 r;
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300842
Johannes Bergdcba6652017-04-26 14:51:20 +0200843 r = STA_STATS_FIELD(BW, s->bw);
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300844
Johannes Berg7fdd69c2017-04-26 11:13:00 +0200845 if (s->enc_flags & RX_ENC_FLAG_SHORT_GI)
Johannes Bergdcba6652017-04-26 14:51:20 +0200846 r |= STA_STATS_FIELD(SGI, 1);
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300847
Johannes Bergda6a4352017-04-26 12:14:59 +0200848 switch (s->encoding) {
849 case RX_ENC_VHT:
Johannes Bergdcba6652017-04-26 14:51:20 +0200850 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_VHT);
851 r |= STA_STATS_FIELD(VHT_NSS, s->nss);
852 r |= STA_STATS_FIELD(VHT_MCS, s->rate_idx);
Johannes Bergda6a4352017-04-26 12:14:59 +0200853 break;
854 case RX_ENC_HT:
Johannes Bergdcba6652017-04-26 14:51:20 +0200855 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HT);
856 r |= STA_STATS_FIELD(HT_MCS, s->rate_idx);
857 break;
858 case RX_ENC_LEGACY:
859 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_LEGACY);
860 r |= STA_STATS_FIELD(LEGACY_BAND, s->band);
861 r |= STA_STATS_FIELD(LEGACY_IDX, s->rate_idx);
Johannes Bergda6a4352017-04-26 12:14:59 +0200862 break;
Luca Coelho41cbb0f2018-06-09 09:14:44 +0300863 case RX_ENC_HE:
864 r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HE);
865 r |= STA_STATS_FIELD(HE_NSS, s->nss);
866 r |= STA_STATS_FIELD(HE_MCS, s->rate_idx);
867 r |= STA_STATS_FIELD(HE_GI, s->he_gi);
868 r |= STA_STATS_FIELD(HE_RU, s->he_ru);
869 r |= STA_STATS_FIELD(HE_DCM, s->he_dcm);
870 break;
Johannes Bergda6a4352017-04-26 12:14:59 +0200871 default:
872 WARN_ON(1);
Johannes Bergdcba6652017-04-26 14:51:20 +0200873 return STA_STATS_RATE_INVALID;
Johannes Bergda6a4352017-04-26 12:14:59 +0200874 }
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300875
876 return r;
877}
878
Jiri Bencf0706e82007-05-05 11:45:53 -0700879#endif /* STA_INFO_H */