Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Devicescape Software, Inc. |
Johannes Berg | d98ad83 | 2014-09-03 15:24:57 +0300 | [diff] [blame] | 3 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
| 9 | |
| 10 | #ifndef STA_INFO_H |
| 11 | #define STA_INFO_H |
| 12 | |
| 13 | #include <linux/list.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/if_ether.h> |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 16 | #include <linux/workqueue.h> |
Bruno Randolf | 541a45a | 2010-12-02 19:12:43 +0900 | [diff] [blame] | 17 | #include <linux/average.h> |
Felix Fietkau | 888d04d | 2012-03-01 15:22:09 +0100 | [diff] [blame] | 18 | #include <linux/etherdevice.h> |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 19 | #include <linux/rhashtable.h> |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 20 | #include "key.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 21 | |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 22 | /** |
| 23 | * enum ieee80211_sta_info_flags - Stations flags |
| 24 | * |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 25 | * These flags are used with &struct sta_info's @flags member, but |
| 26 | * only indirectly with set_sta_flag() and friends. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 27 | * |
| 28 | * @WLAN_STA_AUTH: Station is authenticated. |
| 29 | * @WLAN_STA_ASSOC: Station is associated. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 30 | * @WLAN_STA_PS_STA: Station is in power-save mode |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 31 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
| 32 | * This bit is always checked so needs to be enabled for all stations |
| 33 | * when virtual port control is not in use. |
| 34 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble |
| 35 | * frames. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 36 | * @WLAN_STA_WDS: Station is one of our WDS peers. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 37 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 38 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 39 | * frame to this station is transmitted. |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 40 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
Johannes Berg | 618f356 | 2010-04-06 11:18:46 +0200 | [diff] [blame] | 41 | * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
Johannes Berg | 098a607 | 2010-04-06 11:18:47 +0200 | [diff] [blame] | 42 | * during suspend/resume and station removal. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 43 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
| 44 | * power-save mode logically to flush frames that might still |
| 45 | * be in the queues |
| 46 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping |
| 47 | * station in power-save mode, reply when the driver unblocks. |
Arik Nemtsov | 941c93c | 2011-09-28 14:12:54 +0300 | [diff] [blame] | 48 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
| 49 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct |
| 50 | * packets. This means the link is enabled. |
Arik Nemtsov | 626911c | 2014-07-17 17:14:17 +0300 | [diff] [blame] | 51 | * @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this |
| 52 | * station. |
Arik Nemtsov | 9041c1f | 2014-11-09 18:50:15 +0200 | [diff] [blame] | 53 | * @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching |
Arik Nemtsov | a7a6bdd | 2014-11-09 18:50:19 +0200 | [diff] [blame] | 54 | * @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this |
| 55 | * TDLS peer |
Arik Nemtsov | b98fb44 | 2015-06-10 20:42:59 +0300 | [diff] [blame] | 56 | * @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on |
| 57 | * the BSS base channel. |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 58 | * @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 Berg | deeaee1 | 2011-09-29 16:04:35 +0200 | [diff] [blame] | 62 | * reply to other uAPSD trigger frames or PS-Poll. |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 63 | * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 64 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
Johannes Berg | e1936e9 | 2012-01-20 13:55:23 +0100 | [diff] [blame] | 65 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 66 | * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 67 | * @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 Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 69 | * @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX |
| 70 | * until pending frames are delivered |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 71 | */ |
| 72 | enum ieee80211_sta_info_flags { |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 73 | WLAN_STA_AUTH, |
| 74 | WLAN_STA_ASSOC, |
| 75 | WLAN_STA_PS_STA, |
| 76 | WLAN_STA_AUTHORIZED, |
| 77 | WLAN_STA_SHORT_PREAMBLE, |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 78 | WLAN_STA_WDS, |
| 79 | WLAN_STA_CLEAR_PS_FILT, |
| 80 | WLAN_STA_MFP, |
| 81 | WLAN_STA_BLOCK_BA, |
| 82 | WLAN_STA_PS_DRIVER, |
| 83 | WLAN_STA_PSPOLL, |
| 84 | WLAN_STA_TDLS_PEER, |
| 85 | WLAN_STA_TDLS_PEER_AUTH, |
Arik Nemtsov | 626911c | 2014-07-17 17:14:17 +0300 | [diff] [blame] | 86 | WLAN_STA_TDLS_INITIATOR, |
Arik Nemtsov | 9041c1f | 2014-11-09 18:50:15 +0200 | [diff] [blame] | 87 | WLAN_STA_TDLS_CHAN_SWITCH, |
Arik Nemtsov | a7a6bdd | 2014-11-09 18:50:19 +0200 | [diff] [blame] | 88 | WLAN_STA_TDLS_OFF_CHANNEL, |
Arik Nemtsov | b98fb44 | 2015-06-10 20:42:59 +0300 | [diff] [blame] | 89 | WLAN_STA_TDLS_WIDER_BW, |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 90 | WLAN_STA_UAPSD, |
| 91 | WLAN_STA_SP, |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 92 | WLAN_STA_4ADDR_EVENT, |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 93 | WLAN_STA_INSERTED, |
Johannes Berg | e1936e9 | 2012-01-20 13:55:23 +0100 | [diff] [blame] | 94 | WLAN_STA_RATE_CONTROL, |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 95 | WLAN_STA_TOFFSET_KNOWN, |
Marco Porsch | 3f52b7e | 2013-01-30 18:14:08 +0100 | [diff] [blame] | 96 | WLAN_STA_MPSP_OWNER, |
| 97 | WLAN_STA_MPSP_RECIPIENT, |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 98 | WLAN_STA_PS_DELIVER, |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 99 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 100 | |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 101 | #define ADDBA_RESP_INTERVAL HZ |
Nikolay Martynov | 84381b4 | 2011-12-17 19:39:35 -0500 | [diff] [blame] | 102 | #define HT_AGG_MAX_RETRIES 15 |
| 103 | #define HT_AGG_BURST_RETRIES 3 |
| 104 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 105 | |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 106 | #define HT_AGG_STATE_DRV_READY 0 |
| 107 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 |
| 108 | #define HT_AGG_STATE_OPERATIONAL 2 |
| 109 | #define HT_AGG_STATE_STOPPING 3 |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 110 | #define HT_AGG_STATE_WANT_START 4 |
| 111 | #define HT_AGG_STATE_WANT_STOP 5 |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 112 | |
Johannes Berg | c82c4a8 | 2012-07-18 13:31:31 +0200 | [diff] [blame] | 113 | enum ieee80211_agg_stop_reason { |
| 114 | AGG_STOP_DECLINED, |
| 115 | AGG_STOP_LOCAL_REQUEST, |
| 116 | AGG_STOP_PEER_REQUEST, |
| 117 | AGG_STOP_DESTROY_STA, |
| 118 | }; |
| 119 | |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 120 | /** |
| 121 | * struct tid_ampdu_tx - TID aggregation information (Tx). |
| 122 | * |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 123 | * @rcu_head: rcu head for freeing structure |
Nikolay Martynov | 285fa69 | 2011-11-22 21:50:28 -0500 | [diff] [blame] | 124 | * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 125 | * @addba_resp_timer: timer for peer's response to addba request |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 126 | * @pending: pending frames queue -- use sta's spinlock to protect |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 127 | * @dialog_token: dialog token for aggregation session |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 128 | * @timeout: session timeout value to be filled in ADDBA requests |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 129 | * @state: session state (see above) |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 130 | * @last_tx: jiffies of last tx activity |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 131 | * @stop_initiator: initiator of a session stop |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 132 | * @tx_stop: TX DelBA frame when stopping |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 133 | * @buf_size: reorder buffer size at receiver |
Felix Fietkau | f0425be | 2011-08-28 21:11:01 +0200 | [diff] [blame] | 134 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
| 135 | * @bar_pending: BAR needs to be re-sent |
Emmanuel Grumbach | e3abc8f | 2015-08-16 11:13:22 +0300 | [diff] [blame] | 136 | * @amsdu: support A-MSDU withing A-MDPU |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 137 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 138 | * This structure's lifetime is managed by RCU, assignments to |
| 139 | * the array holding it must hold the aggregation mutex. |
| 140 | * |
| 141 | * The TX path can access it under RCU lock-free if, and |
| 142 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL |
| 143 | * set. Otherwise, the TX path must also acquire the spinlock |
| 144 | * and re-check the state, see comments in the tx code |
| 145 | * touching it. |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 146 | */ |
| 147 | struct tid_ampdu_tx { |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 148 | struct rcu_head rcu_head; |
Nikolay Martynov | 285fa69 | 2011-11-22 21:50:28 -0500 | [diff] [blame] | 149 | struct timer_list session_timer; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 150 | struct timer_list addba_resp_timer; |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 151 | struct sk_buff_head pending; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 152 | unsigned long state; |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 153 | unsigned long last_tx; |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 154 | u16 timeout; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 155 | u8 dialog_token; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 156 | u8 stop_initiator; |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 157 | bool tx_stop; |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 158 | u8 buf_size; |
Felix Fietkau | f0425be | 2011-08-28 21:11:01 +0200 | [diff] [blame] | 159 | |
| 160 | u16 failed_bar_ssn; |
| 161 | bool bar_pending; |
Emmanuel Grumbach | e3abc8f | 2015-08-16 11:13:22 +0300 | [diff] [blame] | 162 | bool amsdu; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 163 | }; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 164 | |
| 165 | /** |
| 166 | * struct tid_ampdu_rx - TID aggregation information (Rx). |
| 167 | * |
Michal Kazior | 83eb935 | 2014-07-16 12:09:31 +0200 | [diff] [blame] | 168 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an |
| 169 | * A-MSDU with individually reported subframes. |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 170 | * @reorder_time: jiffies when skb was added |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 171 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 172 | * @reorder_timer: releases expired frames from the reorder buffer. |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 173 | * @last_rx: jiffies of last rx activity |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 174 | * @head_seq_num: head sequence number in reordering buffer. |
| 175 | * @stored_mpdu_num: number of MPDUs in reordering buffer |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 176 | * @ssn: Starting Sequence Number expected to be aggregated. |
| 177 | * @buf_size: buffer size for incoming A-MPDUs |
Johannes Berg | 20ad19d | 2009-02-10 21:25:45 +0100 | [diff] [blame] | 178 | * @timeout: reset timer value (in TUs). |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 179 | * @dialog_token: dialog token for aggregation session |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 180 | * @rcu_head: RCU head used for freeing this struct |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 181 | * @reorder_lock: serializes access to reorder buffer, see below. |
Michal Kazior | 4549cf2 | 2014-09-02 14:05:10 +0200 | [diff] [blame] | 182 | * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and |
| 183 | * and ssn. |
Johannes Berg | 788211d | 2015-04-01 14:20:42 +0200 | [diff] [blame] | 184 | * @removed: this session is removed (but might have been found due to RCU) |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 185 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 186 | * This structure's lifetime is managed by RCU, assignments to |
| 187 | * the array holding it must hold the aggregation mutex. |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 188 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 189 | * The @reorder_lock is used to protect the members of this |
| 190 | * struct, except for @timeout, @buf_size and @dialog_token, |
| 191 | * which are constant across the lifetime of the struct (the |
| 192 | * dialog token being used only for debugging). |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 193 | */ |
| 194 | struct tid_ampdu_rx { |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 195 | struct rcu_head rcu_head; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 196 | spinlock_t reorder_lock; |
Michal Kazior | 83eb935 | 2014-07-16 12:09:31 +0200 | [diff] [blame] | 197 | struct sk_buff_head *reorder_buf; |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 198 | unsigned long *reorder_time; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 199 | struct timer_list session_timer; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 200 | struct timer_list reorder_timer; |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 201 | unsigned long last_rx; |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 202 | u16 head_seq_num; |
| 203 | u16 stored_mpdu_num; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 204 | u16 ssn; |
| 205 | u16 buf_size; |
| 206 | u16 timeout; |
| 207 | u8 dialog_token; |
Michal Kazior | 4549cf2 | 2014-09-02 14:05:10 +0200 | [diff] [blame] | 208 | bool auto_seq; |
Johannes Berg | 788211d | 2015-04-01 14:20:42 +0200 | [diff] [blame] | 209 | bool removed; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 210 | }; |
| 211 | |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 212 | /** |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 213 | * struct sta_ampdu_mlme - STA aggregation information. |
| 214 | * |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 215 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 216 | * @tid_tx: aggregation info for Tx per TID |
Johannes Berg | ec034b2 | 2011-05-13 13:35:40 +0200 | [diff] [blame] | 217 | * @tid_start_tx: sessions where start was requested |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 218 | * @addba_req_num: number of times addBA request has been sent. |
Nikolay Martynov | 84381b4 | 2011-12-17 19:39:35 -0500 | [diff] [blame] | 219 | * @last_addba_req_time: timestamp of the last addBA request. |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 220 | * @dialog_token_allocator: dialog token enumerator for each new session; |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 221 | * @work: work struct for starting/stopping aggregation |
Johannes Berg | 7c3b1dd | 2010-06-10 10:21:44 +0200 | [diff] [blame] | 222 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
| 223 | * RX timer expired until the work for it runs |
Shahar Levi | f41ccd7 | 2011-05-22 16:10:21 +0300 | [diff] [blame] | 224 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
| 225 | * driver requested to close until the work for it runs |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 226 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
| 227 | * to tid_tx[idx], which are protected by the sta spinlock) |
Ben Greear | e562078 | 2013-06-12 14:08:44 -0700 | [diff] [blame] | 228 | * tid_start_tx is also protected by sta->lock. |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 229 | */ |
| 230 | struct sta_ampdu_mlme { |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 231 | struct mutex mtx; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 232 | /* rx */ |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 233 | struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
| 234 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
| 235 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 236 | /* tx */ |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 237 | struct work_struct work; |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 238 | struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
| 239 | struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; |
| 240 | unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; |
| 241 | u8 addba_req_num[IEEE80211_NUM_TIDS]; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 242 | u8 dialog_token_allocator; |
| 243 | }; |
| 244 | |
| 245 | |
Liad Kaufman | b6da911 | 2014-11-19 13:47:38 +0200 | [diff] [blame] | 246 | /* Value to indicate no TID reservation */ |
| 247 | #define IEEE80211_TID_UNRESERVED 0xff |
| 248 | |
Johannes Berg | e495c24 | 2015-04-10 14:03:17 +0200 | [diff] [blame] | 249 | #define IEEE80211_FAST_XMIT_MAX_IV 18 |
| 250 | |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 251 | /** |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 252 | * struct ieee80211_fast_tx - TX fastpath information |
| 253 | * @key: key to use for hw crypto |
| 254 | * @hdr: the 802.11 header to put with the frame |
| 255 | * @hdr_len: actual 802.11 header length |
| 256 | * @sa_offs: offset of the SA |
| 257 | * @da_offs: offset of the DA |
| 258 | * @pn_offs: offset where to put PN for crypto (or 0 if not needed) |
| 259 | * @band: band this will be transmitted on, for tx_info |
| 260 | * @rcu_head: RCU head to free this struct |
| 261 | * |
Johannes Berg | e495c24 | 2015-04-10 14:03:17 +0200 | [diff] [blame] | 262 | * This struct is small enough so that the common case (maximum crypto |
| 263 | * header length of 8 like for CCMP/GCMP) fits into a single 64-byte |
| 264 | * cache line. |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 265 | */ |
| 266 | struct ieee80211_fast_tx { |
| 267 | struct ieee80211_key *key; |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 268 | u8 hdr_len; |
| 269 | u8 sa_offs, da_offs, pn_offs; |
| 270 | u8 band; |
Johannes Berg | e495c24 | 2015-04-10 14:03:17 +0200 | [diff] [blame] | 271 | u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + |
| 272 | sizeof(rfc1042_header)]; |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 273 | |
| 274 | struct rcu_head rcu_head; |
| 275 | }; |
| 276 | |
| 277 | /** |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 278 | * struct mesh_sta - mesh STA information |
| 279 | * @plink_lock: serialize access to plink fields |
| 280 | * @llid: Local link ID |
| 281 | * @plid: Peer link ID |
Bob Copeland | a69bd8e | 2015-07-14 08:31:58 -0400 | [diff] [blame] | 282 | * @aid: local aid supplied by peer |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 283 | * @reason: Cancel reason on PLINK_HOLDING state |
| 284 | * @plink_retries: Retries in establishment |
| 285 | * @plink_state: peer link state |
| 286 | * @plink_timeout: timeout of peer link |
| 287 | * @plink_timer: peer link watch timer |
| 288 | * @t_offset: timing offset relative to this host |
| 289 | * @t_offset_setpoint: reference timing offset of this sta to be used when |
| 290 | * calculating clockdrift |
| 291 | * @local_pm: local link-specific power save mode |
| 292 | * @peer_pm: peer-specific power save mode towards local STA |
| 293 | * @nonpeer_pm: STA power save mode towards non-peer neighbors |
| 294 | * @processed_beacon: set to true after peer rates and capabilities are |
| 295 | * processed |
Johannes Berg | a76d5e0 | 2015-06-18 16:20:08 +0200 | [diff] [blame] | 296 | * @fail_avg: moving percentage of failed MSDUs |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 297 | */ |
| 298 | struct mesh_sta { |
| 299 | struct timer_list plink_timer; |
| 300 | |
| 301 | s64 t_offset; |
| 302 | s64 t_offset_setpoint; |
| 303 | |
| 304 | spinlock_t plink_lock; |
| 305 | u16 llid; |
| 306 | u16 plid; |
Bob Copeland | a69bd8e | 2015-07-14 08:31:58 -0400 | [diff] [blame] | 307 | u16 aid; |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 308 | u16 reason; |
| 309 | u8 plink_retries; |
| 310 | |
| 311 | bool processed_beacon; |
| 312 | |
| 313 | enum nl80211_plink_state plink_state; |
| 314 | u32 plink_timeout; |
| 315 | |
| 316 | /* mesh power save */ |
| 317 | enum nl80211_mesh_power_mode local_pm; |
| 318 | enum nl80211_mesh_power_mode peer_pm; |
| 319 | enum nl80211_mesh_power_mode nonpeer_pm; |
Johannes Berg | a76d5e0 | 2015-06-18 16:20:08 +0200 | [diff] [blame] | 320 | |
| 321 | /* moving percentage of failed MSDUs */ |
| 322 | unsigned int fail_avg; |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 323 | }; |
| 324 | |
Johannes Berg | 40d9a38 | 2015-07-13 12:26:46 +0200 | [diff] [blame] | 325 | DECLARE_EWMA(signal, 1024, 8) |
| 326 | |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 327 | /** |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 328 | * struct sta_info - STA information |
| 329 | * |
| 330 | * This structure collects information about a station that |
| 331 | * mac80211 is communicating with. |
| 332 | * |
| 333 | * @list: global linked list entry |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 334 | * @free_list: list entry for keeping track of stations to free |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 335 | * @hash_node: hash node for rhashtable |
Johannes Berg | ac100ce | 2015-06-16 16:22:12 +0200 | [diff] [blame] | 336 | * @addr: station's MAC address - duplicated from public part to |
| 337 | * let the hash table work with just a single cacheline |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 338 | * @local: pointer to the global information |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 339 | * @sdata: virtual interface this station belongs to |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 340 | * @ptk: peer keys negotiated with this station, if any |
| 341 | * @ptk_idx: last installed peer key index |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 342 | * @gtk: group keys negotiated with this station, if any |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 343 | * @rate_ctrl: rate control algorithm reference |
Johannes Berg | bbbe8c8 | 2015-05-06 16:00:32 +0200 | [diff] [blame] | 344 | * @rate_ctrl_lock: spinlock used to protect rate control data |
| 345 | * (data inside the algorithm, so serializes calls there) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 346 | * @rate_ctrl_priv: rate control private per-STA pointer |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 347 | * @lock: used for locking all fields that require locking, see comments |
| 348 | * in the header file. |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 349 | * @drv_deliver_wk: used for delivering frames after driver PS unblocking |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 350 | * @listen_interval: listen interval of this station, when we're acting as AP |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 351 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
Emmanuel Grumbach | 1d147bf | 2014-02-20 09:22:11 +0200 | [diff] [blame] | 352 | * @ps_lock: used for powersave (when mac80211 is the AP) related locking |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 353 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
| 354 | * when it leaves power saving state or polls |
| 355 | * @tx_filtered: buffers (per AC) of frames we already tried to |
| 356 | * transmit but were filtered by hardware due to STA having |
| 357 | * entered power saving state, these are also delivered to |
| 358 | * the station when it leaves powersave or polls for frames |
| 359 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 360 | * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on |
Mohammed Shafi Shajakhan | ebe27c9 | 2011-04-08 21:24:24 +0530 | [diff] [blame] | 361 | * @last_connected: time (in seconds) when a station got connected |
Johannes Berg | 798a457 | 2015-06-16 15:58:22 +0200 | [diff] [blame] | 362 | * @last_seq_ctrl: last received seq/frag number from this STA (per TID |
| 363 | * plus one for non-QoS frames) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 364 | * @tid_seq: per-TID sequence numbers for sending to this STA |
| 365 | * @ampdu_mlme: A-MPDU state machine state |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 366 | * @timer_to_tid: identity mapping to ID timers |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 367 | * @mesh: mesh STA information |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 368 | * @debugfs: debug filesystem info |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 369 | * @dead: set to true when sta is unlinked |
Eliad Peller | ef04476 | 2015-11-17 10:24:37 +0200 | [diff] [blame] | 370 | * @removed: set to true when sta is being removed from sta_list |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 371 | * @uploaded: set to true when sta is uploaded to the driver |
Guy Eilam | 2a33bee | 2011-08-17 15:18:15 +0300 | [diff] [blame] | 372 | * @sta: station information we share with the driver |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 373 | * @sta_state: duplicates information about station state (for debug) |
Paul Stewart | a85e1d5 | 2011-12-09 11:01:49 -0800 | [diff] [blame] | 374 | * @beacon_loss_count: number of times beacon loss has triggered |
Johannes Berg | 077f897 | 2013-02-08 09:06:36 +0100 | [diff] [blame] | 375 | * @rcu_head: RCU head used for freeing this station struct |
Johannes Berg | 0af83d3 | 2012-12-27 18:55:36 +0100 | [diff] [blame] | 376 | * @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
| 377 | * taken from HT/VHT capabilities or VHT operating mode notification |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 378 | * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
| 379 | * AP only. |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 380 | * @cipher_scheme: optional cipher scheme for this station |
Liad Kaufman | b6da911 | 2014-11-19 13:47:38 +0200 | [diff] [blame] | 381 | * @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED) |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 382 | * @fast_tx: TX fastpath information |
Arik Nemtsov | 0fabfaa | 2015-06-10 20:41:23 +0300 | [diff] [blame] | 383 | * @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to |
| 384 | * the BSS one. |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 385 | * @tx_stats: TX statistics |
| 386 | * @rx_stats: RX statistics |
| 387 | * @status_stats: TX status statistics |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 388 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 389 | struct sta_info { |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 390 | /* General information, mostly static */ |
Johannes Berg | d778207 | 2013-12-04 23:12:31 +0100 | [diff] [blame] | 391 | struct list_head list, free_list; |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 392 | struct rcu_head rcu_head; |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 393 | struct rhash_head hash_node; |
Johannes Berg | ac100ce | 2015-06-16 16:22:12 +0200 | [diff] [blame] | 394 | u8 addr[ETH_ALEN]; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 395 | struct ieee80211_local *local; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 396 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 397 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 398 | struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 399 | u8 ptk_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 400 | struct rate_control_ref *rate_ctrl; |
| 401 | void *rate_ctrl_priv; |
Johannes Berg | 35c347a | 2015-03-05 16:10:08 +0100 | [diff] [blame] | 402 | spinlock_t rate_ctrl_lock; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 403 | spinlock_t lock; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 404 | |
Johannes Berg | 17c18bf | 2015-03-21 15:25:43 +0100 | [diff] [blame] | 405 | struct ieee80211_fast_tx __rcu *fast_tx; |
| 406 | |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 407 | #ifdef CONFIG_MAC80211_MESH |
| 408 | struct mesh_sta *mesh; |
| 409 | #endif |
| 410 | |
Johannes Berg | 5ac2e35 | 2014-05-27 16:32:27 +0200 | [diff] [blame] | 411 | struct work_struct drv_deliver_wk; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 412 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 413 | u16 listen_interval; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 414 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 415 | bool dead; |
Eliad Peller | ef04476 | 2015-11-17 10:24:37 +0200 | [diff] [blame] | 416 | bool removed; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 417 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 418 | bool uploaded; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 419 | |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 420 | enum ieee80211_sta_state sta_state; |
| 421 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 422 | /* use the accessors defined below */ |
| 423 | unsigned long _flags; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 424 | |
Emmanuel Grumbach | 1d147bf | 2014-02-20 09:22:11 +0200 | [diff] [blame] | 425 | /* STA powersave lock and frame queues */ |
| 426 | spinlock_t ps_lock; |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 427 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
| 428 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; |
| 429 | unsigned long driver_buffered_tids; |
Felix Fietkau | ba8c3d6 | 2015-03-27 21:30:37 +0100 | [diff] [blame] | 430 | unsigned long txq_buffered_tids; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 431 | |
Mohammed Shafi Shajakhan | ebe27c9 | 2011-04-08 21:24:24 +0530 | [diff] [blame] | 432 | long last_connected; |
Felix Fietkau | ef0621e | 2013-04-22 16:29:31 +0200 | [diff] [blame] | 433 | |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 434 | /* Updated from RX path only, no locking requirements */ |
| 435 | struct { |
| 436 | unsigned long packets; |
| 437 | u64 bytes; |
| 438 | unsigned long last_rx; |
| 439 | unsigned long num_duplicates; |
| 440 | unsigned long fragments; |
| 441 | unsigned long dropped; |
| 442 | int last_signal; |
| 443 | struct ewma_signal avg_signal; |
| 444 | u8 chains; |
| 445 | s8 chain_signal_last[IEEE80211_MAX_CHAINS]; |
| 446 | struct ewma_signal chain_signal_avg[IEEE80211_MAX_CHAINS]; |
| 447 | int last_rate_idx; |
| 448 | u32 last_rate_flag; |
| 449 | u32 last_rate_vht_flag; |
| 450 | u8 last_rate_vht_nss; |
| 451 | u64 msdu[IEEE80211_NUM_TIDS + 1]; |
| 452 | } rx_stats; |
Felix Fietkau | ef0621e | 2013-04-22 16:29:31 +0200 | [diff] [blame] | 453 | |
Johannes Berg | 9e26297 | 2011-07-07 18:45:03 +0200 | [diff] [blame] | 454 | /* Plus 1 for non-QoS frames */ |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 455 | __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 456 | |
| 457 | /* Updated from TX status path only, no locking requirements */ |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 458 | struct { |
| 459 | unsigned long filtered; |
| 460 | unsigned long retry_failed, retry_count; |
| 461 | unsigned int lost_packets; |
| 462 | unsigned long last_tdls_pkt_time; |
| 463 | u64 msdu_retries[IEEE80211_NUM_TIDS + 1]; |
| 464 | u64 msdu_failed[IEEE80211_NUM_TIDS + 1]; |
| 465 | } status_stats; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 466 | |
| 467 | /* Updated from TX path only, no locking requirements */ |
Johannes Berg | e5a9f8d | 2015-10-16 17:54:47 +0200 | [diff] [blame] | 468 | struct { |
| 469 | u64 packets[IEEE80211_NUM_ACS]; |
| 470 | u64 bytes[IEEE80211_NUM_ACS]; |
| 471 | struct ieee80211_tx_rate last_rate; |
| 472 | u64 msdu[IEEE80211_NUM_TIDS + 1]; |
| 473 | } tx_stats; |
Johannes Berg | f591fa5 | 2008-07-10 11:21:26 +0200 | [diff] [blame] | 474 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 475 | |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 476 | /* |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 477 | * Aggregation information, locked with lock. |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 478 | */ |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 479 | struct sta_ampdu_mlme ampdu_mlme; |
Johannes Berg | 5a306f5 | 2012-11-14 23:22:21 +0100 | [diff] [blame] | 480 | u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 481 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 482 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 483 | struct sta_info_debugfsdentries { |
| 484 | struct dentry *dir; |
Johannes Berg | 63044e9 | 2008-10-07 12:04:29 +0200 | [diff] [blame] | 485 | bool add_has_run; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 486 | } debugfs; |
| 487 | #endif |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 488 | |
Johannes Berg | 0af83d3 | 2012-12-27 18:55:36 +0100 | [diff] [blame] | 489 | enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
| 490 | |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 491 | enum ieee80211_smps_mode known_smps_mode; |
Max Stepanov | 2475b1cc | 2013-03-24 14:23:27 +0200 | [diff] [blame] | 492 | const struct ieee80211_cipher_scheme *cipher_scheme; |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 493 | |
Liad Kaufman | b6da911 | 2014-11-19 13:47:38 +0200 | [diff] [blame] | 494 | u8 reserved_tid; |
| 495 | |
Arik Nemtsov | 0fabfaa | 2015-06-10 20:41:23 +0300 | [diff] [blame] | 496 | struct cfg80211_chan_def tdls_chandef; |
| 497 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 498 | /* keep last! */ |
| 499 | struct ieee80211_sta sta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 500 | }; |
| 501 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 502 | static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 503 | { |
| 504 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 433f5bc | 2015-06-17 10:31:00 +0200 | [diff] [blame] | 505 | return sta->mesh->plink_state; |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 506 | #endif |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 507 | return NL80211_PLINK_LISTEN; |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 508 | } |
| 509 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 510 | static inline void set_sta_flag(struct sta_info *sta, |
| 511 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 512 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 513 | WARN_ON(flag == WLAN_STA_AUTH || |
| 514 | flag == WLAN_STA_ASSOC || |
| 515 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 516 | set_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 517 | } |
| 518 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 519 | static inline void clear_sta_flag(struct sta_info *sta, |
| 520 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 521 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 522 | WARN_ON(flag == WLAN_STA_AUTH || |
| 523 | flag == WLAN_STA_ASSOC || |
| 524 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 525 | clear_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 526 | } |
| 527 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 528 | static inline int test_sta_flag(struct sta_info *sta, |
| 529 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 530 | { |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 531 | return test_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 532 | } |
| 533 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 534 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
| 535 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 536 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 537 | WARN_ON(flag == WLAN_STA_AUTH || |
| 538 | flag == WLAN_STA_ASSOC || |
| 539 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 540 | return test_and_clear_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 541 | } |
| 542 | |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 543 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
| 544 | enum ieee80211_sta_info_flags flag) |
| 545 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 546 | WARN_ON(flag == WLAN_STA_AUTH || |
| 547 | flag == WLAN_STA_ASSOC || |
| 548 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 549 | return test_and_set_bit(flag, &sta->_flags); |
| 550 | } |
| 551 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 552 | int sta_info_move_state(struct sta_info *sta, |
| 553 | enum ieee80211_sta_state new_state); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 554 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 555 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
| 556 | enum ieee80211_sta_state new_state) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 557 | { |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 558 | int ret; |
| 559 | |
| 560 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); |
| 561 | |
| 562 | ret = sta_info_move_state(sta, new_state); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 563 | WARN_ON_ONCE(ret); |
| 564 | } |
| 565 | |
| 566 | |
Johannes Berg | ec034b2 | 2011-05-13 13:35:40 +0200 | [diff] [blame] | 567 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
| 568 | struct tid_ampdu_tx *tid_tx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 569 | |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 570 | static inline struct tid_ampdu_tx * |
| 571 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) |
| 572 | { |
| 573 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], |
| 574 | lockdep_is_held(&sta->lock) || |
| 575 | lockdep_is_held(&sta->ampdu_mlme.mtx)); |
| 576 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 577 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 578 | /* Maximum number of frames to buffer per power saving station per AC */ |
| 579 | #define STA_MAX_TX_BUFFER 64 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 580 | |
| 581 | /* Minimum buffered frame expiry time. If STA uses listen interval that is |
| 582 | * smaller than this value, the minimum value here is used instead. */ |
| 583 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) |
| 584 | |
| 585 | /* How often station data is cleaned up (e.g., expiration of buffered frames) |
| 586 | */ |
| 587 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
| 588 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 589 | /* |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 590 | * Get a STA info, must be under RCU read lock. |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 591 | */ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 592 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
| 593 | const u8 *addr); |
| 594 | |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 595 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
| 596 | const u8 *addr); |
| 597 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 598 | u32 sta_addr_hash(const void *key, u32 length, u32 seed); |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 599 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 600 | #define _sta_bucket_idx(_tbl, _a) \ |
| 601 | rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd)) |
| 602 | |
| 603 | #define for_each_sta_info(local, tbl, _addr, _sta, _tmp) \ |
| 604 | rht_for_each_entry_rcu(_sta, _tmp, tbl, \ |
| 605 | _sta_bucket_idx(tbl, _addr), \ |
| 606 | hash_node) \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 607 | /* compare address and run code only if it matches */ \ |
Johannes Berg | ac100ce | 2015-06-16 16:22:12 +0200 | [diff] [blame] | 608 | if (ether_addr_equal(_sta->addr, (_addr))) |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 609 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 610 | /* |
| 611 | * Get STA info by index, BROKEN! |
| 612 | */ |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 613 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
| 614 | int idx); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 615 | /* |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 616 | * Create a new STA info, caller owns returned structure |
| 617 | * until sta_info_insert(). |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 618 | */ |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 619 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 5654416 | 2011-12-14 13:28:46 +0100 | [diff] [blame] | 620 | const u8 *addr, gfp_t gfp); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 621 | |
| 622 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); |
| 623 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 624 | /* |
| 625 | * Insert STA info into hash table/list, returns zero or a |
| 626 | * -EEXIST if (if the same MAC address is already present). |
| 627 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 628 | * Calling the non-rcu version makes the caller relinquish, |
| 629 | * the _rcu version calls read_lock_rcu() and must be called |
| 630 | * without it held. |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 631 | */ |
| 632 | int sta_info_insert(struct sta_info *sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 633 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 634 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 635 | int __must_check __sta_info_destroy(struct sta_info *sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 636 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
| 637 | const u8 *addr); |
| 638 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
| 639 | const u8 *addr); |
| 640 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 641 | void sta_info_recalc_tim(struct sta_info *sta); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 642 | |
Johannes Berg | 7bedd0c | 2015-02-13 21:55:15 +0100 | [diff] [blame] | 643 | int sta_info_init(struct ieee80211_local *local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 644 | void sta_info_stop(struct ieee80211_local *local); |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 645 | |
| 646 | /** |
| 647 | * sta_info_flush - flush matching STA entries from the STA table |
| 648 | * |
| 649 | * Returns the number of removed STA entries. |
| 650 | * |
| 651 | * @sdata: sdata to remove all stations from |
Johannes Berg | e716251 | 2013-12-04 23:18:37 +0100 | [diff] [blame] | 652 | * @vlans: if the given interface is an AP interface, also flush VLANs |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 653 | */ |
Johannes Berg | e716251 | 2013-12-04 23:18:37 +0100 | [diff] [blame] | 654 | int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
| 655 | |
| 656 | static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) |
| 657 | { |
| 658 | return __sta_info_flush(sdata, false); |
| 659 | } |
Johannes Berg | 051007d | 2012-12-13 23:49:02 +0100 | [diff] [blame] | 660 | |
Thomas Pedersen | 6b62bf3 | 2012-03-05 15:31:48 -0800 | [diff] [blame] | 661 | void sta_set_rate_info_tx(struct sta_info *sta, |
| 662 | const struct ieee80211_tx_rate *rate, |
| 663 | struct rate_info *rinfo); |
Johannes Berg | b7ffbd7 | 2014-06-04 17:31:56 +0200 | [diff] [blame] | 664 | void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo); |
| 665 | |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 666 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
| 667 | unsigned long exp_time); |
Emmanuel Grumbach | 687da13 | 2013-10-01 16:45:43 +0300 | [diff] [blame] | 668 | u8 sta_info_tx_streams(struct sta_info *sta); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 669 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 670 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
| 671 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 672 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 673 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 674 | #endif /* STA_INFO_H */ |