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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Devicescape Software, Inc.
Johannes Bergd98ad832014-09-03 15:24:57 +03003 * Copyright 2013-2014 Intel Mobile Communications GmbH
Johannes Berg4f6b1b32016-03-31 20:02:08 +03004 * Copyright(c) 2015-2016 Intel Deutschland GmbH
Jiri Bencf0706e82007-05-05 11:45:53 -07005 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef STA_INFO_H
12#define STA_INFO_H
13
14#include <linux/list.h>
15#include <linux/types.h>
16#include <linux/if_ether.h>
Johannes Bergaf818582009-11-06 11:35:50 +010017#include <linux/workqueue.h>
Bruno Randolf541a45a2010-12-02 19:12:43 +090018#include <linux/average.h>
Felix Fietkau888d04d2012-03-01 15:22:09 +010019#include <linux/etherdevice.h>
Johannes Berg7bedd0c2015-02-13 21:55:15 +010020#include <linux/rhashtable.h>
Johannes Berg0f9c5a62016-03-31 20:02:09 +030021#include <linux/u64_stats_sync.h>
Johannes Berg2c8dccc2008-04-08 15:14:40 -040022#include "key.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070023
Johannes Berg238814f2008-01-28 17:19:37 +010024/**
25 * enum ieee80211_sta_info_flags - Stations flags
26 *
Johannes Bergc2c98fd2011-09-29 16:04:36 +020027 * These flags are used with &struct sta_info's @flags member, but
28 * only indirectly with set_sta_flag() and friends.
Johannes Berg238814f2008-01-28 17:19:37 +010029 *
30 * @WLAN_STA_AUTH: Station is authenticated.
31 * @WLAN_STA_ASSOC: Station is associated.
Johannes Bergaf818582009-11-06 11:35:50 +010032 * @WLAN_STA_PS_STA: Station is in power-save mode
Johannes Berg238814f2008-01-28 17:19:37 +010033 * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic.
34 * This bit is always checked so needs to be enabled for all stations
35 * when virtual port control is not in use.
36 * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
37 * frames.
Johannes Berg238814f2008-01-28 17:19:37 +010038 * @WLAN_STA_WDS: Station is one of our WDS peers.
Johannes Bergd46e1442008-02-20 23:59:33 +010039 * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
Johannes Berge039fa42008-05-15 12:55:29 +020040 * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
Johannes Bergd46e1442008-02-20 23:59:33 +010041 * frame to this station is transmitted.
Jouni Malinen5394af42009-01-08 13:31:59 +020042 * @WLAN_STA_MFP: Management frame protection is used with this STA.
Johannes Berg618f3562010-04-06 11:18:46 +020043 * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
Johannes Berg098a6072010-04-06 11:18:47 +020044 * during suspend/resume and station removal.
Johannes Bergaf818582009-11-06 11:35:50 +010045 * @WLAN_STA_PS_DRIVER: driver requires keeping this station in
46 * power-save mode logically to flush frames that might still
47 * be in the queues
48 * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
49 * station in power-save mode, reply when the driver unblocks.
Arik Nemtsov941c93c2011-09-28 14:12:54 +030050 * @WLAN_STA_TDLS_PEER: Station is a TDLS peer.
51 * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct
52 * packets. This means the link is enabled.
Arik Nemtsov626911c2014-07-17 17:14:17 +030053 * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this
54 * station.
Arik Nemtsov9041c1f2014-11-09 18:50:15 +020055 * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +020056 * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this
57 * TDLS peer
Arik Nemtsovb98fb442015-06-10 20:42:59 +030058 * @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on
59 * the BSS base channel.
Johannes Berg47086fc2011-09-29 16:04:33 +020060 * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
61 * keeping station in power-save mode, reply when the driver
62 * unblocks the station.
63 * @WLAN_STA_SP: Station is in a service period, so don't try to
Johannes Bergdeeaee12011-09-29 16:04:35 +020064 * reply to other uAPSD trigger frames or PS-Poll.
Johannes Berge7f4a942011-11-04 11:18:20 +010065 * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame.
Johannes Berg83d5cc02012-01-12 09:31:10 +010066 * @WLAN_STA_INSERTED: This station is inserted into the hash table.
Johannes Berge1936e92012-01-20 13:55:23 +010067 * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station.
Javier Cardonadbf498f2012-03-31 11:31:32 -070068 * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid.
Marco Porsch3f52b7e2013-01-30 18:14:08 +010069 * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period.
70 * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP.
Johannes Berg5ac2e352014-05-27 16:32:27 +020071 * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX
72 * until pending frames are delivered
Johannes Bergc84387d2016-03-17 15:02:54 +020073 *
74 * @NUM_WLAN_STA_FLAGS: number of defined flags
Johannes Berg238814f2008-01-28 17:19:37 +010075 */
76enum ieee80211_sta_info_flags {
Johannes Bergc2c98fd2011-09-29 16:04:36 +020077 WLAN_STA_AUTH,
78 WLAN_STA_ASSOC,
79 WLAN_STA_PS_STA,
80 WLAN_STA_AUTHORIZED,
81 WLAN_STA_SHORT_PREAMBLE,
Johannes Bergc2c98fd2011-09-29 16:04:36 +020082 WLAN_STA_WDS,
83 WLAN_STA_CLEAR_PS_FILT,
84 WLAN_STA_MFP,
85 WLAN_STA_BLOCK_BA,
86 WLAN_STA_PS_DRIVER,
87 WLAN_STA_PSPOLL,
88 WLAN_STA_TDLS_PEER,
89 WLAN_STA_TDLS_PEER_AUTH,
Arik Nemtsov626911c2014-07-17 17:14:17 +030090 WLAN_STA_TDLS_INITIATOR,
Arik Nemtsov9041c1f2014-11-09 18:50:15 +020091 WLAN_STA_TDLS_CHAN_SWITCH,
Arik Nemtsova7a6bdd2014-11-09 18:50:19 +020092 WLAN_STA_TDLS_OFF_CHANNEL,
Arik Nemtsovb98fb442015-06-10 20:42:59 +030093 WLAN_STA_TDLS_WIDER_BW,
Johannes Bergc2c98fd2011-09-29 16:04:36 +020094 WLAN_STA_UAPSD,
95 WLAN_STA_SP,
Johannes Berge7f4a942011-11-04 11:18:20 +010096 WLAN_STA_4ADDR_EVENT,
Johannes Berg83d5cc02012-01-12 09:31:10 +010097 WLAN_STA_INSERTED,
Johannes Berge1936e92012-01-20 13:55:23 +010098 WLAN_STA_RATE_CONTROL,
Javier Cardonadbf498f2012-03-31 11:31:32 -070099 WLAN_STA_TOFFSET_KNOWN,
Marco Porsch3f52b7e2013-01-30 18:14:08 +0100100 WLAN_STA_MPSP_OWNER,
101 WLAN_STA_MPSP_RECIPIENT,
Johannes Berg5ac2e352014-05-27 16:32:27 +0200102 WLAN_STA_PS_DELIVER,
Johannes Bergc84387d2016-03-17 15:02:54 +0200103
104 NUM_WLAN_STA_FLAGS,
Johannes Berg238814f2008-01-28 17:19:37 +0100105};
Jiri Bencf0706e82007-05-05 11:45:53 -0700106
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200107#define ADDBA_RESP_INTERVAL HZ
Nikolay Martynov84381b42011-12-17 19:39:35 -0500108#define HT_AGG_MAX_RETRIES 15
109#define HT_AGG_BURST_RETRIES 3
110#define HT_AGG_RETRIES_PERIOD (15 * HZ)
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200111
Johannes Berga622ab72010-06-10 10:21:39 +0200112#define HT_AGG_STATE_DRV_READY 0
113#define HT_AGG_STATE_RESPONSE_RECEIVED 1
114#define HT_AGG_STATE_OPERATIONAL 2
115#define HT_AGG_STATE_STOPPING 3
Johannes Berg0ab33702010-06-10 10:21:42 +0200116#define HT_AGG_STATE_WANT_START 4
117#define HT_AGG_STATE_WANT_STOP 5
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200118
Johannes Bergc82c4a82012-07-18 13:31:31 +0200119enum ieee80211_agg_stop_reason {
120 AGG_STOP_DECLINED,
121 AGG_STOP_LOCAL_REQUEST,
122 AGG_STOP_PEER_REQUEST,
123 AGG_STOP_DESTROY_STA,
124};
125
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200126/**
127 * struct tid_ampdu_tx - TID aggregation information (Tx).
128 *
Johannes Berga622ab72010-06-10 10:21:39 +0200129 * @rcu_head: rcu head for freeing structure
Nikolay Martynov285fa692011-11-22 21:50:28 -0500130 * @session_timer: check if we keep Tx-ing on the TID (by timeout value)
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200131 * @addba_resp_timer: timer for peer's response to addba request
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100132 * @pending: pending frames queue -- use sta's spinlock to protect
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200133 * @dialog_token: dialog token for aggregation session
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530134 * @timeout: session timeout value to be filled in ADDBA requests
Johannes Berga622ab72010-06-10 10:21:39 +0200135 * @state: session state (see above)
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100136 * @last_tx: jiffies of last tx activity
Johannes Berga622ab72010-06-10 10:21:39 +0200137 * @stop_initiator: initiator of a session stop
Johannes Berg53f73c02010-10-05 19:37:40 +0200138 * @tx_stop: TX DelBA frame when stopping
Johannes Berg0b01f032011-01-18 13:51:05 +0100139 * @buf_size: reorder buffer size at receiver
Felix Fietkauf0425be2011-08-28 21:11:01 +0200140 * @failed_bar_ssn: ssn of the last failed BAR tx attempt
141 * @bar_pending: BAR needs to be re-sent
Emmanuel Grumbache3abc8f2015-08-16 11:13:22 +0300142 * @amsdu: support A-MSDU withing A-MDPU
Johannes Berga622ab72010-06-10 10:21:39 +0200143 *
Johannes Bergdd318572010-11-29 11:09:16 +0100144 * This structure's lifetime is managed by RCU, assignments to
145 * the array holding it must hold the aggregation mutex.
146 *
147 * The TX path can access it under RCU lock-free if, and
148 * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL
149 * set. Otherwise, the TX path must also acquire the spinlock
150 * and re-check the state, see comments in the tx code
151 * touching it.
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200152 */
153struct tid_ampdu_tx {
Johannes Berga622ab72010-06-10 10:21:39 +0200154 struct rcu_head rcu_head;
Nikolay Martynov285fa692011-11-22 21:50:28 -0500155 struct timer_list session_timer;
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200156 struct timer_list addba_resp_timer;
Johannes Bergcd8ffc82009-03-23 17:28:41 +0100157 struct sk_buff_head pending;
Johannes Berga622ab72010-06-10 10:21:39 +0200158 unsigned long state;
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100159 unsigned long last_tx;
Sujith Manoharanbd2ce6e2010-12-15 07:47:10 +0530160 u16 timeout;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200161 u8 dialog_token;
Johannes Berga622ab72010-06-10 10:21:39 +0200162 u8 stop_initiator;
Johannes Berg53f73c02010-10-05 19:37:40 +0200163 bool tx_stop;
Johannes Berg0b01f032011-01-18 13:51:05 +0100164 u8 buf_size;
Felix Fietkauf0425be2011-08-28 21:11:01 +0200165
166 u16 failed_bar_ssn;
167 bool bar_pending;
Emmanuel Grumbache3abc8f2015-08-16 11:13:22 +0300168 bool amsdu;
Ron Rindjunsky80656c22008-01-28 14:07:16 +0200169};
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200170
171/**
172 * struct tid_ampdu_rx - TID aggregation information (Rx).
173 *
Michal Kazior83eb9352014-07-16 12:09:31 +0200174 * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an
175 * A-MSDU with individually reported subframes.
Sara Sharon06470f72016-01-28 16:19:25 +0200176 * @reorder_buf_filtered: bitmap indicating where there are filtered frames in
177 * the reorder buffer that should be ignored when releasing frames
Jouni Malinen4d050f12009-05-05 20:35:14 +0300178 * @reorder_time: jiffies when skb was added
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200179 * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200180 * @reorder_timer: releases expired frames from the reorder buffer.
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100181 * @last_rx: jiffies of last rx activity
Johannes Berg056cdd52008-03-26 23:21:47 +0100182 * @head_seq_num: head sequence number in reordering buffer.
183 * @stored_mpdu_num: number of MPDUs in reordering buffer
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200184 * @ssn: Starting Sequence Number expected to be aggregated.
185 * @buf_size: buffer size for incoming A-MPDUs
Johannes Berg20ad19d2009-02-10 21:25:45 +0100186 * @timeout: reset timer value (in TUs).
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200187 * @dialog_token: dialog token for aggregation session
Johannes Berga87f7362010-06-10 10:21:38 +0200188 * @rcu_head: RCU head used for freeing this struct
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200189 * @reorder_lock: serializes access to reorder buffer, see below.
Michal Kazior4549cf22014-09-02 14:05:10 +0200190 * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
191 * and ssn.
Johannes Berg788211d2015-04-01 14:20:42 +0200192 * @removed: this session is removed (but might have been found due to RCU)
Johannes Berga87f7362010-06-10 10:21:38 +0200193 *
Johannes Bergdd318572010-11-29 11:09:16 +0100194 * This structure's lifetime is managed by RCU, assignments to
195 * the array holding it must hold the aggregation mutex.
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200196 *
Johannes Bergdd318572010-11-29 11:09:16 +0100197 * The @reorder_lock is used to protect the members of this
198 * struct, except for @timeout, @buf_size and @dialog_token,
199 * which are constant across the lifetime of the struct (the
200 * dialog token being used only for debugging).
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200201 */
202struct tid_ampdu_rx {
Johannes Berga87f7362010-06-10 10:21:38 +0200203 struct rcu_head rcu_head;
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200204 spinlock_t reorder_lock;
Sara Sharon06470f72016-01-28 16:19:25 +0200205 u64 reorder_buf_filtered;
Michal Kazior83eb9352014-07-16 12:09:31 +0200206 struct sk_buff_head *reorder_buf;
Jouni Malinen4d050f12009-05-05 20:35:14 +0300207 unsigned long *reorder_time;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200208 struct timer_list session_timer;
Christian Lamparter2bff8eb2010-08-05 01:36:41 +0200209 struct timer_list reorder_timer;
Felix Fietkau12d3952f2012-03-18 22:58:06 +0100210 unsigned long last_rx;
Johannes Berg056cdd52008-03-26 23:21:47 +0100211 u16 head_seq_num;
212 u16 stored_mpdu_num;
Ron Rindjunskycee24a32008-03-26 20:36:03 +0200213 u16 ssn;
214 u16 buf_size;
215 u16 timeout;
216 u8 dialog_token;
Michal Kazior4549cf22014-09-02 14:05:10 +0200217 bool auto_seq;
Johannes Berg788211d2015-04-01 14:20:42 +0200218 bool removed;
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200219};
220
Luis Carlos Cobob4e08ea2008-02-29 15:46:08 -0800221/**
Johannes Bergfcea6002010-05-31 11:40:23 +0200222 * struct sta_ampdu_mlme - STA aggregation information.
223 *
Sara Sharon412a6d82015-12-08 19:09:05 +0200224 * @mtx: mutex to protect all TX data (except non-NULL assignments
225 * to tid_tx[idx], which are protected by the sta spinlock)
226 * tid_start_tx is also protected by sta->lock.
Johannes Berga87f7362010-06-10 10:21:38 +0200227 * @tid_rx: aggregation info for Rx per TID -- RCU protected
Johannes Berg7c3b1dd2010-06-10 10:21:44 +0200228 * @tid_rx_timer_expired: bitmap indicating on which TIDs the
229 * RX timer expired until the work for it runs
Shahar Levif41ccd72011-05-22 16:10:21 +0300230 * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the
231 * driver requested to close until the work for it runs
Sara Sharon412a6d82015-12-08 19:09:05 +0200232 * @agg_session_valid: bitmap indicating which TID has a rx BA session open on
233 * @work: work struct for starting/stopping aggregation
234 * @tid_tx: aggregation info for Tx per TID
235 * @tid_start_tx: sessions where start was requested
236 * @last_addba_req_time: timestamp of the last addBA request.
237 * @addba_req_num: number of times addBA request has been sent.
238 * @dialog_token_allocator: dialog token enumerator for each new session;
Johannes Bergfcea6002010-05-31 11:40:23 +0200239 */
240struct sta_ampdu_mlme {
Johannes Berga93e3642010-06-10 10:21:46 +0200241 struct mutex mtx;
Johannes Bergfcea6002010-05-31 11:40:23 +0200242 /* rx */
Johannes Berg5a306f52012-11-14 23:22:21 +0100243 struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS];
244 unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
245 unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
Sara Sharon412a6d82015-12-08 19:09:05 +0200246 unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
Johannes Bergfcea6002010-05-31 11:40:23 +0200247 /* tx */
Johannes Berg0ab33702010-06-10 10:21:42 +0200248 struct work_struct work;
Johannes Berg5a306f52012-11-14 23:22:21 +0100249 struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS];
250 struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS];
251 unsigned long last_addba_req_time[IEEE80211_NUM_TIDS];
252 u8 addba_req_num[IEEE80211_NUM_TIDS];
Johannes Bergfcea6002010-05-31 11:40:23 +0200253 u8 dialog_token_allocator;
254};
255
256
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200257/* Value to indicate no TID reservation */
258#define IEEE80211_TID_UNRESERVED 0xff
259
Johannes Berge495c242015-04-10 14:03:17 +0200260#define IEEE80211_FAST_XMIT_MAX_IV 18
261
Johannes Bergfcea6002010-05-31 11:40:23 +0200262/**
Johannes Berg17c18bf2015-03-21 15:25:43 +0100263 * struct ieee80211_fast_tx - TX fastpath information
264 * @key: key to use for hw crypto
265 * @hdr: the 802.11 header to put with the frame
266 * @hdr_len: actual 802.11 header length
267 * @sa_offs: offset of the SA
268 * @da_offs: offset of the DA
269 * @pn_offs: offset where to put PN for crypto (or 0 if not needed)
270 * @band: band this will be transmitted on, for tx_info
271 * @rcu_head: RCU head to free this struct
272 *
Johannes Berge495c242015-04-10 14:03:17 +0200273 * This struct is small enough so that the common case (maximum crypto
274 * header length of 8 like for CCMP/GCMP) fits into a single 64-byte
275 * cache line.
Johannes Berg17c18bf2015-03-21 15:25:43 +0100276 */
277struct ieee80211_fast_tx {
278 struct ieee80211_key *key;
Johannes Berg17c18bf2015-03-21 15:25:43 +0100279 u8 hdr_len;
280 u8 sa_offs, da_offs, pn_offs;
281 u8 band;
Johannes Berge495c242015-04-10 14:03:17 +0200282 u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
283 sizeof(rfc1042_header)];
Johannes Berg17c18bf2015-03-21 15:25:43 +0100284
285 struct rcu_head rcu_head;
286};
287
288/**
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300289 * struct ieee80211_fast_rx - RX fastpath information
290 * @dev: netdevice for reporting the SKB
291 * @vif_type: (P2P-less) interface type of the original sdata (sdata->vif.type)
292 * @vif_addr: interface address
293 * @rfc1042_hdr: copy of the RFC 1042 SNAP header (to have in cache)
294 * @control_port_protocol: control port protocol copied from sdata
295 * @expected_ds_bits: from/to DS bits expected
296 * @icv_len: length of the MIC if present
297 * @key: bool indicating encryption is expected (key is set)
298 * @sta_notify: notify the MLME code (once)
299 * @internal_forward: forward froms internally on AP/VLAN type interfaces
300 * @da_offs: offset of the DA in the header (for header conversion)
301 * @sa_offs: offset of the SA in the header (for header conversion)
302 * @rcu_head: RCU head for freeing this structure
303 */
304struct ieee80211_fast_rx {
305 struct net_device *dev;
306 enum nl80211_iftype vif_type;
307 u8 vif_addr[ETH_ALEN] __aligned(2);
308 u8 rfc1042_hdr[6] __aligned(2);
309 __be16 control_port_protocol;
310 __le16 expected_ds_bits;
311 u8 icv_len;
312 u8 key:1,
313 sta_notify:1,
314 internal_forward:1;
315 u8 da_offs, sa_offs;
316
317 struct rcu_head rcu_head;
318};
319
320/**
Johannes Berg433f5bc2015-06-17 10:31:00 +0200321 * struct mesh_sta - mesh STA information
322 * @plink_lock: serialize access to plink fields
323 * @llid: Local link ID
324 * @plid: Peer link ID
Bob Copelanda69bd8e2015-07-14 08:31:58 -0400325 * @aid: local aid supplied by peer
Johannes Berg433f5bc2015-06-17 10:31:00 +0200326 * @reason: Cancel reason on PLINK_HOLDING state
327 * @plink_retries: Retries in establishment
328 * @plink_state: peer link state
329 * @plink_timeout: timeout of peer link
330 * @plink_timer: peer link watch timer
331 * @t_offset: timing offset relative to this host
332 * @t_offset_setpoint: reference timing offset of this sta to be used when
333 * calculating clockdrift
334 * @local_pm: local link-specific power save mode
335 * @peer_pm: peer-specific power save mode towards local STA
336 * @nonpeer_pm: STA power save mode towards non-peer neighbors
337 * @processed_beacon: set to true after peer rates and capabilities are
338 * processed
Johannes Berga76d5e02015-06-18 16:20:08 +0200339 * @fail_avg: moving percentage of failed MSDUs
Johannes Berg433f5bc2015-06-17 10:31:00 +0200340 */
341struct mesh_sta {
342 struct timer_list plink_timer;
343
344 s64 t_offset;
345 s64 t_offset_setpoint;
346
347 spinlock_t plink_lock;
348 u16 llid;
349 u16 plid;
Bob Copelanda69bd8e2015-07-14 08:31:58 -0400350 u16 aid;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200351 u16 reason;
352 u8 plink_retries;
353
354 bool processed_beacon;
355
356 enum nl80211_plink_state plink_state;
357 u32 plink_timeout;
358
359 /* mesh power save */
360 enum nl80211_mesh_power_mode local_pm;
361 enum nl80211_mesh_power_mode peer_pm;
362 enum nl80211_mesh_power_mode nonpeer_pm;
Johannes Berga76d5e02015-06-18 16:20:08 +0200363
364 /* moving percentage of failed MSDUs */
365 unsigned int fail_avg;
Johannes Berg433f5bc2015-06-17 10:31:00 +0200366};
367
Johannes Berg40d9a382015-07-13 12:26:46 +0200368DECLARE_EWMA(signal, 1024, 8)
369
Johannes Berg433f5bc2015-06-17 10:31:00 +0200370/**
Johannes Berg693b1bb2008-02-25 16:27:48 +0100371 * struct sta_info - STA information
372 *
373 * This structure collects information about a station that
374 * mac80211 is communicating with.
375 *
376 * @list: global linked list entry
Johannes Bergd7782072013-12-04 23:12:31 +0100377 * @free_list: list entry for keeping track of stations to free
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100378 * @hash_node: hash node for rhashtable
Johannes Bergac100ce2015-06-16 16:22:12 +0200379 * @addr: station's MAC address - duplicated from public part to
380 * let the hash table work with just a single cacheline
Johannes Berg693b1bb2008-02-25 16:27:48 +0100381 * @local: pointer to the global information
Johannes Berge25cf4a2008-10-23 08:51:20 +0200382 * @sdata: virtual interface this station belongs to
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200383 * @ptk: peer keys negotiated with this station, if any
384 * @ptk_idx: last installed peer key index
Johannes Berge31b8212010-10-05 19:39:30 +0200385 * @gtk: group keys negotiated with this station, if any
Johannes Berge25cf4a2008-10-23 08:51:20 +0200386 * @rate_ctrl: rate control algorithm reference
Johannes Bergbbbe8c82015-05-06 16:00:32 +0200387 * @rate_ctrl_lock: spinlock used to protect rate control data
388 * (data inside the algorithm, so serializes calls there)
Johannes Berge25cf4a2008-10-23 08:51:20 +0200389 * @rate_ctrl_priv: rate control private per-STA pointer
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700390 * @lock: used for locking all fields that require locking, see comments
391 * in the header file.
Johannes Berg5ac2e352014-05-27 16:32:27 +0200392 * @drv_deliver_wk: used for delivering frames after driver PS unblocking
Johannes Berge25cf4a2008-10-23 08:51:20 +0200393 * @listen_interval: listen interval of this station, when we're acting as AP
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200394 * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
Emmanuel Grumbach1d147bf2014-02-20 09:22:11 +0200395 * @ps_lock: used for powersave (when mac80211 is the AP) related locking
Johannes Berg948d8872011-09-29 16:04:29 +0200396 * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
397 * when it leaves power saving state or polls
398 * @tx_filtered: buffers (per AC) of frames we already tried to
399 * transmit but were filtered by hardware due to STA having
400 * entered power saving state, these are also delivered to
401 * the station when it leaves powersave or polls for frames
402 * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
Felix Fietkauba8c3d62015-03-27 21:30:37 +0100403 * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530404 * @last_connected: time (in seconds) when a station got connected
Johannes Berg798a4572015-06-16 15:58:22 +0200405 * @last_seq_ctrl: last received seq/frag number from this STA (per TID
406 * plus one for non-QoS frames)
Johannes Berge25cf4a2008-10-23 08:51:20 +0200407 * @tid_seq: per-TID sequence numbers for sending to this STA
408 * @ampdu_mlme: A-MPDU state machine state
Randy Dunlap6ef307b2008-07-03 13:52:18 -0700409 * @timer_to_tid: identity mapping to ID timers
Johannes Berg433f5bc2015-06-17 10:31:00 +0200410 * @mesh: mesh STA information
Johannes Bergfc4a25c2016-04-05 11:59:05 +0200411 * @debugfs_dir: debug filesystem directory dentry
Johannes Bergaf818582009-11-06 11:35:50 +0100412 * @dead: set to true when sta is unlinked
Eliad Pelleref044762015-11-17 10:24:37 +0200413 * @removed: set to true when sta is being removed from sta_list
Johannes Berg34e89502010-02-03 13:59:58 +0100414 * @uploaded: set to true when sta is uploaded to the driver
Guy Eilam2a33bee2011-08-17 15:18:15 +0300415 * @sta: station information we share with the driver
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100416 * @sta_state: duplicates information about station state (for debug)
Paul Stewarta85e1d52011-12-09 11:01:49 -0800417 * @beacon_loss_count: number of times beacon loss has triggered
Johannes Berg077f8972013-02-08 09:06:36 +0100418 * @rcu_head: RCU head used for freeing this station struct
Johannes Berg0af83d32012-12-27 18:55:36 +0100419 * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
420 * taken from HT/VHT capabilities or VHT operating mode notification
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300421 * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
422 * AP only.
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200423 * @cipher_scheme: optional cipher scheme for this station
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200424 * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
Johannes Berg17c18bf2015-03-21 15:25:43 +0100425 * @fast_tx: TX fastpath information
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300426 * @fast_rx: RX fastpath information
Arik Nemtsov0fabfaa2015-06-10 20:41:23 +0300427 * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
428 * the BSS one.
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200429 * @tx_stats: TX statistics
430 * @rx_stats: RX statistics
431 * @status_stats: TX status statistics
Johannes Berg693b1bb2008-02-25 16:27:48 +0100432 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700433struct sta_info {
Johannes Berg693b1bb2008-02-25 16:27:48 +0100434 /* General information, mostly static */
Johannes Bergd7782072013-12-04 23:12:31 +0100435 struct list_head list, free_list;
Eliad Pellerb22cfcf2012-09-09 14:43:51 +0300436 struct rcu_head rcu_head;
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100437 struct rhash_head hash_node;
Johannes Bergac100ce2015-06-16 16:22:12 +0200438 u8 addr[ETH_ALEN];
Jiri Bencf0706e82007-05-05 11:45:53 -0700439 struct ieee80211_local *local;
Johannes Bergd0709a62008-02-25 16:27:46 +0100440 struct ieee80211_sub_if_data *sdata;
Johannes Berg40b275b2011-05-13 14:15:49 +0200441 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200442 struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS];
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200443 u8 ptk_idx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700444 struct rate_control_ref *rate_ctrl;
445 void *rate_ctrl_priv;
Johannes Berg35c347a2015-03-05 16:10:08 +0100446 spinlock_t rate_ctrl_lock;
Johannes Berg07346f812008-05-03 01:02:02 +0200447 spinlock_t lock;
Johannes Berg17741cd2008-09-11 00:02:02 +0200448
Johannes Berg17c18bf2015-03-21 15:25:43 +0100449 struct ieee80211_fast_tx __rcu *fast_tx;
Johannes Berg49ddf8e2016-03-31 20:02:10 +0300450 struct ieee80211_fast_rx __rcu *fast_rx;
Johannes Berg17c18bf2015-03-21 15:25:43 +0100451
Johannes Berg433f5bc2015-06-17 10:31:00 +0200452#ifdef CONFIG_MAC80211_MESH
453 struct mesh_sta *mesh;
454#endif
455
Johannes Berg5ac2e352014-05-27 16:32:27 +0200456 struct work_struct drv_deliver_wk;
Johannes Bergaf818582009-11-06 11:35:50 +0100457
Jiri Bencf0706e82007-05-05 11:45:53 -0700458 u16 listen_interval;
Jiri Bence9f207f2007-05-05 11:46:38 -0700459
Johannes Bergaf818582009-11-06 11:35:50 +0100460 bool dead;
Eliad Pelleref044762015-11-17 10:24:37 +0200461 bool removed;
Johannes Bergaf818582009-11-06 11:35:50 +0100462
Johannes Berg34e89502010-02-03 13:59:58 +0100463 bool uploaded;
Johannes Bergd0709a62008-02-25 16:27:46 +0100464
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100465 enum ieee80211_sta_state sta_state;
466
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200467 /* use the accessors defined below */
468 unsigned long _flags;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100469
Emmanuel Grumbach1d147bf2014-02-20 09:22:11 +0200470 /* STA powersave lock and frame queues */
471 spinlock_t ps_lock;
Johannes Berg948d8872011-09-29 16:04:29 +0200472 struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
473 struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
474 unsigned long driver_buffered_tids;
Felix Fietkauba8c3d62015-03-27 21:30:37 +0100475 unsigned long txq_buffered_tids;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100476
Mohammed Shafi Shajakhanebe27c92011-04-08 21:24:24 +0530477 long last_connected;
Felix Fietkauef0621e2013-04-22 16:29:31 +0200478
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200479 /* Updated from RX path only, no locking requirements */
480 struct {
481 unsigned long packets;
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200482 unsigned long last_rx;
483 unsigned long num_duplicates;
484 unsigned long fragments;
485 unsigned long dropped;
486 int last_signal;
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200487 u8 chains;
488 s8 chain_signal_last[IEEE80211_MAX_CHAINS];
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300489 u16 last_rate;
Johannes Berg0f9c5a62016-03-31 20:02:09 +0300490
491 struct u64_stats_sync syncp;
492 u64 bytes;
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200493 u64 msdu[IEEE80211_NUM_TIDS + 1];
494 } rx_stats;
Johannes Berg0be6ed12016-03-31 20:02:05 +0300495 struct {
496 struct ewma_signal signal;
497 struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS];
498 } rx_stats_avg;
Felix Fietkauef0621e2013-04-22 16:29:31 +0200499
Johannes Berg9e262972011-07-07 18:45:03 +0200500 /* Plus 1 for non-QoS frames */
Johannes Berg5a306f52012-11-14 23:22:21 +0100501 __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100502
503 /* Updated from TX status path only, no locking requirements */
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200504 struct {
505 unsigned long filtered;
506 unsigned long retry_failed, retry_count;
507 unsigned int lost_packets;
508 unsigned long last_tdls_pkt_time;
509 u64 msdu_retries[IEEE80211_NUM_TIDS + 1];
510 u64 msdu_failed[IEEE80211_NUM_TIDS + 1];
Johannes Bergb8da6b62016-03-31 20:02:07 +0300511 unsigned long last_ack;
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200512 } status_stats;
Johannes Berg693b1bb2008-02-25 16:27:48 +0100513
514 /* Updated from TX path only, no locking requirements */
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200515 struct {
516 u64 packets[IEEE80211_NUM_ACS];
517 u64 bytes[IEEE80211_NUM_ACS];
518 struct ieee80211_tx_rate last_rate;
519 u64 msdu[IEEE80211_NUM_TIDS + 1];
520 } tx_stats;
Johannes Bergf591fa52008-07-10 11:21:26 +0200521 u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100522
Johannes Berg693b1bb2008-02-25 16:27:48 +0100523 /*
Johannes Berg07346f812008-05-03 01:02:02 +0200524 * Aggregation information, locked with lock.
Johannes Berg693b1bb2008-02-25 16:27:48 +0100525 */
Ron Rindjunsky5aae2882007-12-25 17:00:32 +0200526 struct sta_ampdu_mlme ampdu_mlme;
Johannes Berg5a306f52012-11-14 23:22:21 +0100527 u8 timer_to_tid[IEEE80211_NUM_TIDS];
Johannes Berg693b1bb2008-02-25 16:27:48 +0100528
Jiri Bence9f207f2007-05-05 11:46:38 -0700529#ifdef CONFIG_MAC80211_DEBUGFS
Johannes Bergfc4a25c2016-04-05 11:59:05 +0200530 struct dentry *debugfs_dir;
Jiri Bence9f207f2007-05-05 11:46:38 -0700531#endif
Johannes Berg17741cd2008-09-11 00:02:02 +0200532
Johannes Berg0af83d32012-12-27 18:55:36 +0100533 enum ieee80211_sta_rx_bandwidth cur_max_bandwidth;
534
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300535 enum ieee80211_smps_mode known_smps_mode;
Max Stepanov2475b1cc2013-03-24 14:23:27 +0200536 const struct ieee80211_cipher_scheme *cipher_scheme;
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300537
Liad Kaufmanb6da9112014-11-19 13:47:38 +0200538 u8 reserved_tid;
539
Arik Nemtsov0fabfaa2015-06-10 20:41:23 +0300540 struct cfg80211_chan_def tdls_chandef;
541
Johannes Berg17741cd2008-09-11 00:02:02 +0200542 /* keep last! */
543 struct ieee80211_sta sta;
Jiri Bencf0706e82007-05-05 11:45:53 -0700544};
545
Javier Cardona57cf8042011-05-13 10:45:43 -0700546static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta)
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100547{
548#ifdef CONFIG_MAC80211_MESH
Johannes Berg433f5bc2015-06-17 10:31:00 +0200549 return sta->mesh->plink_state;
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100550#endif
Javier Cardona57cf8042011-05-13 10:45:43 -0700551 return NL80211_PLINK_LISTEN;
Johannes Bergd6d1a5a2008-02-25 16:24:38 +0100552}
553
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200554static inline void set_sta_flag(struct sta_info *sta,
555 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200556{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100557 WARN_ON(flag == WLAN_STA_AUTH ||
558 flag == WLAN_STA_ASSOC ||
559 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200560 set_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200561}
562
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200563static inline void clear_sta_flag(struct sta_info *sta,
564 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200565{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100566 WARN_ON(flag == WLAN_STA_AUTH ||
567 flag == WLAN_STA_ASSOC ||
568 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200569 clear_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200570}
571
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200572static inline int test_sta_flag(struct sta_info *sta,
573 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200574{
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200575 return test_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200576}
577
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200578static inline int test_and_clear_sta_flag(struct sta_info *sta,
579 enum ieee80211_sta_info_flags flag)
Johannes Berg07346f812008-05-03 01:02:02 +0200580{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100581 WARN_ON(flag == WLAN_STA_AUTH ||
582 flag == WLAN_STA_ASSOC ||
583 flag == WLAN_STA_AUTHORIZED);
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200584 return test_and_clear_bit(flag, &sta->_flags);
Johannes Berg07346f812008-05-03 01:02:02 +0200585}
586
Johannes Berge7f4a942011-11-04 11:18:20 +0100587static inline int test_and_set_sta_flag(struct sta_info *sta,
588 enum ieee80211_sta_info_flags flag)
589{
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100590 WARN_ON(flag == WLAN_STA_AUTH ||
591 flag == WLAN_STA_ASSOC ||
592 flag == WLAN_STA_AUTHORIZED);
Johannes Berge7f4a942011-11-04 11:18:20 +0100593 return test_and_set_bit(flag, &sta->_flags);
594}
595
Johannes Berg83d5cc02012-01-12 09:31:10 +0100596int sta_info_move_state(struct sta_info *sta,
597 enum ieee80211_sta_state new_state);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100598
Johannes Berg83d5cc02012-01-12 09:31:10 +0100599static inline void sta_info_pre_move_state(struct sta_info *sta,
600 enum ieee80211_sta_state new_state)
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100601{
Johannes Berg83d5cc02012-01-12 09:31:10 +0100602 int ret;
603
604 WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED));
605
606 ret = sta_info_move_state(sta, new_state);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100607 WARN_ON_ONCE(ret);
608}
609
610
Johannes Bergec034b22011-05-13 13:35:40 +0200611void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
612 struct tid_ampdu_tx *tid_tx);
Jiri Bencf0706e82007-05-05 11:45:53 -0700613
Johannes Berg40b275b2011-05-13 14:15:49 +0200614static inline struct tid_ampdu_tx *
615rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
616{
617 return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid],
618 lockdep_is_held(&sta->lock) ||
619 lockdep_is_held(&sta->ampdu_mlme.mtx));
620}
Jiri Bencf0706e82007-05-05 11:45:53 -0700621
Johannes Berg948d8872011-09-29 16:04:29 +0200622/* Maximum number of frames to buffer per power saving station per AC */
623#define STA_MAX_TX_BUFFER 64
Jiri Bencf0706e82007-05-05 11:45:53 -0700624
625/* Minimum buffered frame expiry time. If STA uses listen interval that is
626 * smaller than this value, the minimum value here is used instead. */
627#define STA_TX_BUFFER_EXPIRE (10 * HZ)
628
629/* How often station data is cleaned up (e.g., expiration of buffered frames)
630 */
631#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
632
Johannes Bergd0709a62008-02-25 16:27:46 +0100633/*
Johannes Bergabe60632009-11-25 17:46:18 +0100634 * Get a STA info, must be under RCU read lock.
Johannes Bergd0709a62008-02-25 16:27:46 +0100635 */
Johannes Bergabe60632009-11-25 17:46:18 +0100636struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
637 const u8 *addr);
638
Felix Fietkau0e5ded52010-01-08 18:10:58 +0100639struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
640 const u8 *addr);
641
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100642u32 sta_addr_hash(const void *key, u32 length, u32 seed);
Johannes Bergabe60632009-11-25 17:46:18 +0100643
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100644#define _sta_bucket_idx(_tbl, _a) \
645 rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd))
646
647#define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \
648 rht_for_each_entry_rcu(_sta, _tmp, tbl, \
649 _sta_bucket_idx(tbl, _addr), \
650 hash_node) \
Johannes Bergabe60632009-11-25 17:46:18 +0100651 /* compare address and run code only if it matches */ \
Johannes Bergac100ce2015-06-16 16:22:12 +0200652 if (ether_addr_equal(_sta->addr, (_addr)))
Johannes Bergabe60632009-11-25 17:46:18 +0100653
Johannes Bergd0709a62008-02-25 16:27:46 +0100654/*
655 * Get STA info by index, BROKEN!
656 */
Johannes Berg3b53fde82009-11-16 12:00:37 +0100657struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
658 int idx);
Johannes Bergd0709a62008-02-25 16:27:46 +0100659/*
Johannes Berg73651ee2008-02-25 16:27:47 +0100660 * Create a new STA info, caller owns returned structure
661 * until sta_info_insert().
Johannes Bergd0709a62008-02-25 16:27:46 +0100662 */
Johannes Berg73651ee2008-02-25 16:27:47 +0100663struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
Johannes Berg56544162011-12-14 13:28:46 +0100664 const u8 *addr, gfp_t gfp);
Johannes Bergd9a7ddb2011-12-14 12:35:30 +0100665
666void sta_info_free(struct ieee80211_local *local, struct sta_info *sta);
667
Johannes Berg73651ee2008-02-25 16:27:47 +0100668/*
669 * Insert STA info into hash table/list, returns zero or a
670 * -EEXIST if (if the same MAC address is already present).
671 *
Johannes Berg34e89502010-02-03 13:59:58 +0100672 * Calling the non-rcu version makes the caller relinquish,
673 * the _rcu version calls read_lock_rcu() and must be called
674 * without it held.
Johannes Berg73651ee2008-02-25 16:27:47 +0100675 */
676int sta_info_insert(struct sta_info *sta);
Johannes Berg34e89502010-02-03 13:59:58 +0100677int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
Johannes Bergd0709a62008-02-25 16:27:46 +0100678
Johannes Berg83d5cc02012-01-12 09:31:10 +0100679int __must_check __sta_info_destroy(struct sta_info *sta);
Johannes Berg34e89502010-02-03 13:59:58 +0100680int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
681 const u8 *addr);
682int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
683 const u8 *addr);
684
Johannes Bergc868cb352011-09-29 16:04:27 +0200685void sta_info_recalc_tim(struct sta_info *sta);
Johannes Bergd0709a62008-02-25 16:27:46 +0100686
Johannes Berg7bedd0c2015-02-13 21:55:15 +0100687int sta_info_init(struct ieee80211_local *local);
Jiri Bencf0706e82007-05-05 11:45:53 -0700688void sta_info_stop(struct ieee80211_local *local);
Johannes Berg051007d2012-12-13 23:49:02 +0100689
690/**
691 * sta_info_flush - flush matching STA entries from the STA table
692 *
693 * Returns the number of removed STA entries.
694 *
695 * @sdata: sdata to remove all stations from
Johannes Berge7162512013-12-04 23:18:37 +0100696 * @vlans: if the given interface is an AP interface, also flush VLANs
Johannes Berg051007d2012-12-13 23:49:02 +0100697 */
Johannes Berge7162512013-12-04 23:18:37 +0100698int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans);
699
700static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata)
701{
702 return __sta_info_flush(sdata, false);
703}
Johannes Berg051007d2012-12-13 23:49:02 +0100704
Thomas Pedersen6b62bf32012-03-05 15:31:48 -0800705void sta_set_rate_info_tx(struct sta_info *sta,
706 const struct ieee80211_tx_rate *rate,
707 struct rate_info *rinfo);
Johannes Bergb7ffbd72014-06-04 17:31:56 +0200708void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo);
709
Johannes Berg24723d12008-09-11 00:01:46 +0200710void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
711 unsigned long exp_time);
Emmanuel Grumbach687da132013-10-01 16:45:43 +0300712u8 sta_info_tx_streams(struct sta_info *sta);
Johannes Berg004c8722008-02-20 11:21:35 +0100713
Johannes Bergaf818582009-11-06 11:35:50 +0100714void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
715void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
Johannes Berg47086fc2011-09-29 16:04:33 +0200716void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta);
Johannes Bergaf818582009-11-06 11:35:50 +0100717
Johannes Bergb8da6b62016-03-31 20:02:07 +0300718unsigned long ieee80211_sta_last_active(struct sta_info *sta);
719
Johannes Berg4f6b1b32016-03-31 20:02:08 +0300720#define STA_STATS_RATE_INVALID 0
721#define STA_STATS_RATE_VHT 0x8000
722#define STA_STATS_RATE_HT 0x4000
723#define STA_STATS_RATE_LEGACY 0x2000
724#define STA_STATS_RATE_SGI 0x1000
725#define STA_STATS_RATE_BW_SHIFT 9
726#define STA_STATS_RATE_BW_MASK (0x7 << STA_STATS_RATE_BW_SHIFT)
727
728static inline u16 sta_stats_encode_rate(struct ieee80211_rx_status *s)
729{
730 u16 r = s->rate_idx;
731
732 if (s->vht_flag & RX_VHT_FLAG_80MHZ)
733 r |= RATE_INFO_BW_80 << STA_STATS_RATE_BW_SHIFT;
734 else if (s->vht_flag & RX_VHT_FLAG_160MHZ)
735 r |= RATE_INFO_BW_160 << STA_STATS_RATE_BW_SHIFT;
736 else if (s->flag & RX_FLAG_40MHZ)
737 r |= RATE_INFO_BW_40 << STA_STATS_RATE_BW_SHIFT;
738 else if (s->flag & RX_FLAG_10MHZ)
739 r |= RATE_INFO_BW_10 << STA_STATS_RATE_BW_SHIFT;
740 else if (s->flag & RX_FLAG_5MHZ)
741 r |= RATE_INFO_BW_5 << STA_STATS_RATE_BW_SHIFT;
742 else
743 r |= RATE_INFO_BW_20 << STA_STATS_RATE_BW_SHIFT;
744
745 if (s->flag & RX_FLAG_SHORT_GI)
746 r |= STA_STATS_RATE_SGI;
747
748 if (s->flag & RX_FLAG_VHT)
749 r |= STA_STATS_RATE_VHT | (s->vht_nss << 4);
750 else if (s->flag & RX_FLAG_HT)
751 r |= STA_STATS_RATE_HT;
752 else
753 r |= STA_STATS_RATE_LEGACY | (s->band << 4);
754
755 return r;
756}
757
Jiri Bencf0706e82007-05-05 11:45:53 -0700758#endif /* STA_INFO_H */