Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Devicescape Software, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #ifndef STA_INFO_H |
| 10 | #define STA_INFO_H |
| 11 | |
| 12 | #include <linux/list.h> |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/if_ether.h> |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 15 | #include <linux/workqueue.h> |
Bruno Randolf | 541a45a | 2010-12-02 19:12:43 +0900 | [diff] [blame] | 16 | #include <linux/average.h> |
Felix Fietkau | 888d04d | 2012-03-01 15:22:09 +0100 | [diff] [blame] | 17 | #include <linux/etherdevice.h> |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 18 | #include "key.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 19 | |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 20 | /** |
| 21 | * enum ieee80211_sta_info_flags - Stations flags |
| 22 | * |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 23 | * These flags are used with &struct sta_info's @flags member, but |
| 24 | * only indirectly with set_sta_flag() and friends. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 25 | * |
| 26 | * @WLAN_STA_AUTH: Station is authenticated. |
| 27 | * @WLAN_STA_ASSOC: Station is associated. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 28 | * @WLAN_STA_PS_STA: Station is in power-save mode |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 29 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
| 30 | * This bit is always checked so needs to be enabled for all stations |
| 31 | * when virtual port control is not in use. |
| 32 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble |
| 33 | * frames. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 34 | * @WLAN_STA_WME: Station is a QoS-STA. |
| 35 | * @WLAN_STA_WDS: Station is one of our WDS peers. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 36 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 37 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 38 | * frame to this station is transmitted. |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 39 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
Johannes Berg | 618f356 | 2010-04-06 11:18:46 +0200 | [diff] [blame] | 40 | * @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] | 41 | * during suspend/resume and station removal. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 42 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
| 43 | * power-save mode logically to flush frames that might still |
| 44 | * be in the queues |
| 45 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping |
| 46 | * station in power-save mode, reply when the driver unblocks. |
Arik Nemtsov | 941c93c | 2011-09-28 14:12:54 +0300 | [diff] [blame] | 47 | * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
| 48 | * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct |
| 49 | * packets. This means the link is enabled. |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 50 | * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
| 51 | * keeping station in power-save mode, reply when the driver |
| 52 | * unblocks the station. |
| 53 | * @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] | 54 | * reply to other uAPSD trigger frames or PS-Poll. |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 55 | * @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] | 56 | * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
Johannes Berg | e1936e9 | 2012-01-20 13:55:23 +0100 | [diff] [blame] | 57 | * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 58 | * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 59 | */ |
| 60 | enum ieee80211_sta_info_flags { |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 61 | WLAN_STA_AUTH, |
| 62 | WLAN_STA_ASSOC, |
| 63 | WLAN_STA_PS_STA, |
| 64 | WLAN_STA_AUTHORIZED, |
| 65 | WLAN_STA_SHORT_PREAMBLE, |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 66 | WLAN_STA_WME, |
| 67 | WLAN_STA_WDS, |
| 68 | WLAN_STA_CLEAR_PS_FILT, |
| 69 | WLAN_STA_MFP, |
| 70 | WLAN_STA_BLOCK_BA, |
| 71 | WLAN_STA_PS_DRIVER, |
| 72 | WLAN_STA_PSPOLL, |
| 73 | WLAN_STA_TDLS_PEER, |
| 74 | WLAN_STA_TDLS_PEER_AUTH, |
| 75 | WLAN_STA_UAPSD, |
| 76 | WLAN_STA_SP, |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 77 | WLAN_STA_4ADDR_EVENT, |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 78 | WLAN_STA_INSERTED, |
Johannes Berg | e1936e9 | 2012-01-20 13:55:23 +0100 | [diff] [blame] | 79 | WLAN_STA_RATE_CONTROL, |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 80 | WLAN_STA_TOFFSET_KNOWN, |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 81 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 82 | |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 83 | #define STA_TID_NUM 16 |
| 84 | #define ADDBA_RESP_INTERVAL HZ |
Nikolay Martynov | 84381b4 | 2011-12-17 19:39:35 -0500 | [diff] [blame] | 85 | #define HT_AGG_MAX_RETRIES 15 |
| 86 | #define HT_AGG_BURST_RETRIES 3 |
| 87 | #define HT_AGG_RETRIES_PERIOD (15 * HZ) |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 88 | |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 89 | #define HT_AGG_STATE_DRV_READY 0 |
| 90 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 |
| 91 | #define HT_AGG_STATE_OPERATIONAL 2 |
| 92 | #define HT_AGG_STATE_STOPPING 3 |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 93 | #define HT_AGG_STATE_WANT_START 4 |
| 94 | #define HT_AGG_STATE_WANT_STOP 5 |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 95 | |
| 96 | /** |
| 97 | * struct tid_ampdu_tx - TID aggregation information (Tx). |
| 98 | * |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 99 | * @rcu_head: rcu head for freeing structure |
Nikolay Martynov | 285fa69 | 2011-11-22 21:50:28 -0500 | [diff] [blame] | 100 | * @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] | 101 | * @addba_resp_timer: timer for peer's response to addba request |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 102 | * @pending: pending frames queue -- use sta's spinlock to protect |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 103 | * @dialog_token: dialog token for aggregation session |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 104 | * @timeout: session timeout value to be filled in ADDBA requests |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 105 | * @state: session state (see above) |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 106 | * @last_tx: jiffies of last tx activity |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 107 | * @stop_initiator: initiator of a session stop |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 108 | * @tx_stop: TX DelBA frame when stopping |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 109 | * @buf_size: reorder buffer size at receiver |
Felix Fietkau | f0425be | 2011-08-28 21:11:01 +0200 | [diff] [blame] | 110 | * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
| 111 | * @bar_pending: BAR needs to be re-sent |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 112 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 113 | * This structure's lifetime is managed by RCU, assignments to |
| 114 | * the array holding it must hold the aggregation mutex. |
| 115 | * |
| 116 | * The TX path can access it under RCU lock-free if, and |
| 117 | * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL |
| 118 | * set. Otherwise, the TX path must also acquire the spinlock |
| 119 | * and re-check the state, see comments in the tx code |
| 120 | * touching it. |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 121 | */ |
| 122 | struct tid_ampdu_tx { |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 123 | struct rcu_head rcu_head; |
Nikolay Martynov | 285fa69 | 2011-11-22 21:50:28 -0500 | [diff] [blame] | 124 | struct timer_list session_timer; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 125 | struct timer_list addba_resp_timer; |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 126 | struct sk_buff_head pending; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 127 | unsigned long state; |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 128 | unsigned long last_tx; |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 129 | u16 timeout; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 130 | u8 dialog_token; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 131 | u8 stop_initiator; |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 132 | bool tx_stop; |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 133 | u8 buf_size; |
Felix Fietkau | f0425be | 2011-08-28 21:11:01 +0200 | [diff] [blame] | 134 | |
| 135 | u16 failed_bar_ssn; |
| 136 | bool bar_pending; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 137 | }; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 138 | |
| 139 | /** |
| 140 | * struct tid_ampdu_rx - TID aggregation information (Rx). |
| 141 | * |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 142 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 143 | * @reorder_time: jiffies when skb was added |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 144 | * @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] | 145 | * @reorder_timer: releases expired frames from the reorder buffer. |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 146 | * @last_rx: jiffies of last rx activity |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 147 | * @head_seq_num: head sequence number in reordering buffer. |
| 148 | * @stored_mpdu_num: number of MPDUs in reordering buffer |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 149 | * @ssn: Starting Sequence Number expected to be aggregated. |
| 150 | * @buf_size: buffer size for incoming A-MPDUs |
Johannes Berg | 20ad19d | 2009-02-10 21:25:45 +0100 | [diff] [blame] | 151 | * @timeout: reset timer value (in TUs). |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 152 | * @dialog_token: dialog token for aggregation session |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 153 | * @rcu_head: RCU head used for freeing this struct |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 154 | * @reorder_lock: serializes access to reorder buffer, see below. |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 155 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 156 | * This structure's lifetime is managed by RCU, assignments to |
| 157 | * the array holding it must hold the aggregation mutex. |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 158 | * |
Johannes Berg | dd31857 | 2010-11-29 11:09:16 +0100 | [diff] [blame] | 159 | * The @reorder_lock is used to protect the members of this |
| 160 | * struct, except for @timeout, @buf_size and @dialog_token, |
| 161 | * which are constant across the lifetime of the struct (the |
| 162 | * dialog token being used only for debugging). |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 163 | */ |
| 164 | struct tid_ampdu_rx { |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 165 | struct rcu_head rcu_head; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 166 | spinlock_t reorder_lock; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 167 | struct sk_buff **reorder_buf; |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 168 | unsigned long *reorder_time; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 169 | struct timer_list session_timer; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 170 | struct timer_list reorder_timer; |
Felix Fietkau | 12d3952f | 2012-03-18 22:58:06 +0100 | [diff] [blame] | 171 | unsigned long last_rx; |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 172 | u16 head_seq_num; |
| 173 | u16 stored_mpdu_num; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 174 | u16 ssn; |
| 175 | u16 buf_size; |
| 176 | u16 timeout; |
| 177 | u8 dialog_token; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 178 | }; |
| 179 | |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 180 | /** |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 181 | * struct sta_ampdu_mlme - STA aggregation information. |
| 182 | * |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 183 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 184 | * @tid_tx: aggregation info for Tx per TID |
Johannes Berg | ec034b2 | 2011-05-13 13:35:40 +0200 | [diff] [blame] | 185 | * @tid_start_tx: sessions where start was requested |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 186 | * @addba_req_num: number of times addBA request has been sent. |
Nikolay Martynov | 84381b4 | 2011-12-17 19:39:35 -0500 | [diff] [blame] | 187 | * @last_addba_req_time: timestamp of the last addBA request. |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 188 | * @dialog_token_allocator: dialog token enumerator for each new session; |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 189 | * @work: work struct for starting/stopping aggregation |
Johannes Berg | 7c3b1dd | 2010-06-10 10:21:44 +0200 | [diff] [blame] | 190 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
| 191 | * RX timer expired until the work for it runs |
Shahar Levi | f41ccd7 | 2011-05-22 16:10:21 +0300 | [diff] [blame] | 192 | * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
| 193 | * driver requested to close until the work for it runs |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 194 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
| 195 | * to tid_tx[idx], which are protected by the sta spinlock) |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 196 | */ |
| 197 | struct sta_ampdu_mlme { |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 198 | struct mutex mtx; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 199 | /* rx */ |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 200 | struct tid_ampdu_rx __rcu *tid_rx[STA_TID_NUM]; |
Johannes Berg | 7c3b1dd | 2010-06-10 10:21:44 +0200 | [diff] [blame] | 201 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)]; |
Shahar Levi | f41ccd7 | 2011-05-22 16:10:21 +0300 | [diff] [blame] | 202 | unsigned long tid_rx_stop_requested[BITS_TO_LONGS(STA_TID_NUM)]; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 203 | /* tx */ |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 204 | struct work_struct work; |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 205 | struct tid_ampdu_tx __rcu *tid_tx[STA_TID_NUM]; |
Johannes Berg | ec034b2 | 2011-05-13 13:35:40 +0200 | [diff] [blame] | 206 | struct tid_ampdu_tx *tid_start_tx[STA_TID_NUM]; |
Nikolay Martynov | 84381b4 | 2011-12-17 19:39:35 -0500 | [diff] [blame] | 207 | unsigned long last_addba_req_time[STA_TID_NUM]; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 208 | u8 addba_req_num[STA_TID_NUM]; |
| 209 | u8 dialog_token_allocator; |
| 210 | }; |
| 211 | |
| 212 | |
| 213 | /** |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 214 | * struct sta_info - STA information |
| 215 | * |
| 216 | * This structure collects information about a station that |
| 217 | * mac80211 is communicating with. |
| 218 | * |
| 219 | * @list: global linked list entry |
| 220 | * @hnext: hash table linked list pointer |
| 221 | * @local: pointer to the global information |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 222 | * @sdata: virtual interface this station belongs to |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 223 | * @ptk: peer key negotiated with this station, if any |
| 224 | * @gtk: group keys negotiated with this station, if any |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 225 | * @rate_ctrl: rate control algorithm reference |
| 226 | * @rate_ctrl_priv: rate control private per-STA pointer |
| 227 | * @last_tx_rate: rate used for last transmit, to report to userspace as |
| 228 | * "the" transmit rate |
Felix Fietkau | 3af6334 | 2011-02-27 22:08:01 +0100 | [diff] [blame] | 229 | * @last_rx_rate_idx: rx status rate index of the last data packet |
| 230 | * @last_rx_rate_flag: rx status flag of the last data packet |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 231 | * @lock: used for locking all fields that require locking, see comments |
| 232 | * in the header file. |
Jaswinder Singh Rajput | 841507f | 2009-11-22 13:47:58 +0530 | [diff] [blame] | 233 | * @drv_unblock_wk: used for driver PS unblocking |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 234 | * @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] | 235 | * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 236 | * @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
| 237 | * when it leaves power saving state or polls |
| 238 | * @tx_filtered: buffers (per AC) of frames we already tried to |
| 239 | * transmit but were filtered by hardware due to STA having |
| 240 | * entered power saving state, these are also delivered to |
| 241 | * the station when it leaves powersave or polls for frames |
| 242 | * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 243 | * @rx_packets: Number of MSDUs received from this STA |
| 244 | * @rx_bytes: Number of bytes received from this STA |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 245 | * @wep_weak_iv_count: number of weak WEP IVs received from this station |
| 246 | * @last_rx: time (in jiffies) when last frame was received from this STA |
Mohammed Shafi Shajakhan | ebe27c9 | 2011-04-08 21:24:24 +0530 | [diff] [blame] | 247 | * @last_connected: time (in seconds) when a station got connected |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 248 | * @num_duplicates: number of duplicate frames received from this STA |
| 249 | * @rx_fragments: number of received MPDUs |
| 250 | * @rx_dropped: number of dropped MPDUs from this STA |
| 251 | * @last_signal: signal of last received frame from this STA |
Bruno Randolf | 541a45a | 2010-12-02 19:12:43 +0900 | [diff] [blame] | 252 | * @avg_signal: moving average of signal of received frames from this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 253 | * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 254 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
| 255 | * @tx_retry_failed: number of frames that failed retry |
| 256 | * @tx_retry_count: total number of retries for frames to this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 257 | * @fail_avg: moving percentage of failed MSDUs |
| 258 | * @tx_packets: number of RX/TX MSDUs |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 259 | * @tx_bytes: number of bytes transmitted to this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 260 | * @tx_fragments: number of transmitted MPDUs |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 261 | * @tid_seq: per-TID sequence numbers for sending to this STA |
| 262 | * @ampdu_mlme: A-MPDU state machine state |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 263 | * @timer_to_tid: identity mapping to ID timers |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 264 | * @llid: Local link ID |
| 265 | * @plid: Peer link ID |
| 266 | * @reason: Cancel reason on PLINK_HOLDING state |
| 267 | * @plink_retries: Retries in establishment |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 268 | * @ignore_plink_timer: ignore the peer-link timer (used internally) |
| 269 | * @plink_state: peer link state |
| 270 | * @plink_timeout: timeout of peer link |
| 271 | * @plink_timer: peer link watch timer |
Johannes Berg | cce4c77 | 2009-05-19 10:39:34 +0200 | [diff] [blame] | 272 | * @plink_timer_was_running: used by suspend/resume to restore timers |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 273 | * @t_offset: timing offset relative to this host |
Ashok Nagarajan | 1dd4558 | 2012-06-11 10:23:35 -0700 | [diff] [blame] | 274 | * @t_offset_setpoint: reference timing offset of this sta to be used when |
| 275 | * calculating clockdrift |
| 276 | * @ch_type: peer's channel type |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 277 | * @debugfs: debug filesystem info |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 278 | * @dead: set to true when sta is unlinked |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 279 | * @uploaded: set to true when sta is uploaded to the driver |
Johannes Berg | 99ba2a1 | 2010-11-24 08:10:06 +0100 | [diff] [blame] | 280 | * @lost_packets: number of consecutive lost packets |
Guy Eilam | 2a33bee | 2011-08-17 15:18:15 +0300 | [diff] [blame] | 281 | * @sta: station information we share with the driver |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 282 | * @sta_state: duplicates information about station state (for debug) |
Paul Stewart | a85e1d5 | 2011-12-09 11:01:49 -0800 | [diff] [blame] | 283 | * @beacon_loss_count: number of times beacon loss has triggered |
Johannes Berg | d13e141 | 2012-06-09 10:31:09 +0200 | [diff] [blame] | 284 | * @supports_40mhz: tracks whether the station advertised 40 MHz support |
| 285 | * as we overwrite its HT parameters with the currently used value |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 286 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 287 | struct sta_info { |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 288 | /* General information, mostly static */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 289 | struct list_head list; |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 290 | struct rcu_head rcu_head; |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 291 | struct sta_info __rcu *hnext; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 292 | struct ieee80211_local *local; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 293 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 294 | struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
| 295 | struct ieee80211_key __rcu *ptk; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 296 | struct rate_control_ref *rate_ctrl; |
| 297 | void *rate_ctrl_priv; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 298 | spinlock_t lock; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 299 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 300 | struct work_struct drv_unblock_wk; |
Eliad Peller | b22cfcf | 2012-09-09 14:43:51 +0300 | [diff] [blame] | 301 | struct work_struct free_sta_wk; |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 302 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 303 | u16 listen_interval; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 304 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 305 | bool dead; |
| 306 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 307 | bool uploaded; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 308 | |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 309 | enum ieee80211_sta_state sta_state; |
| 310 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 311 | /* use the accessors defined below */ |
| 312 | unsigned long _flags; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 313 | |
| 314 | /* |
| 315 | * STA powersave frame queues, no more than the internal |
| 316 | * locking required. |
| 317 | */ |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 318 | struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
| 319 | struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; |
| 320 | unsigned long driver_buffered_tids; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 321 | |
| 322 | /* Updated from RX path only, no locking requirements */ |
| 323 | unsigned long rx_packets, rx_bytes; |
| 324 | unsigned long wep_weak_iv_count; |
| 325 | unsigned long last_rx; |
Mohammed Shafi Shajakhan | ebe27c9 | 2011-04-08 21:24:24 +0530 | [diff] [blame] | 326 | long last_connected; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 327 | unsigned long num_duplicates; |
| 328 | unsigned long rx_fragments; |
| 329 | unsigned long rx_dropped; |
| 330 | int last_signal; |
Bruno Randolf | 541a45a | 2010-12-02 19:12:43 +0900 | [diff] [blame] | 331 | struct ewma avg_signal; |
Johannes Berg | 9e26297 | 2011-07-07 18:45:03 +0200 | [diff] [blame] | 332 | /* Plus 1 for non-QoS frames */ |
| 333 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES + 1]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 334 | |
| 335 | /* Updated from TX status path only, no locking requirements */ |
| 336 | unsigned long tx_filtered_count; |
| 337 | unsigned long tx_retry_failed, tx_retry_count; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 338 | /* moving percentage of failed MSDUs */ |
| 339 | unsigned int fail_avg; |
| 340 | |
| 341 | /* Updated from TX path only, no locking requirements */ |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 342 | unsigned long tx_packets; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 343 | unsigned long tx_bytes; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 344 | unsigned long tx_fragments; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 345 | struct ieee80211_tx_rate last_tx_rate; |
Felix Fietkau | 3af6334 | 2011-02-27 22:08:01 +0100 | [diff] [blame] | 346 | int last_rx_rate_idx; |
| 347 | int last_rx_rate_flag; |
Johannes Berg | f591fa5 | 2008-07-10 11:21:26 +0200 | [diff] [blame] | 348 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 349 | |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 350 | /* |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 351 | * Aggregation information, locked with lock. |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 352 | */ |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 353 | struct sta_ampdu_mlme ampdu_mlme; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 354 | u8 timer_to_tid[STA_TID_NUM]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 355 | |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 356 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 357 | /* |
| 358 | * Mesh peer link attributes |
| 359 | * TODO: move to a sub-structure that is referenced with pointer? |
| 360 | */ |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 361 | __le16 llid; |
| 362 | __le16 plid; |
| 363 | __le16 reason; |
| 364 | u8 plink_retries; |
Johannes Berg | 7495883 | 2008-02-25 22:17:30 +0100 | [diff] [blame] | 365 | bool ignore_plink_timer; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 366 | bool plink_timer_was_running; |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 367 | enum nl80211_plink_state plink_state; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 368 | u32 plink_timeout; |
| 369 | struct timer_list plink_timer; |
Javier Cardona | dbf498f | 2012-03-31 11:31:32 -0700 | [diff] [blame] | 370 | s64 t_offset; |
| 371 | s64 t_offset_setpoint; |
Ashok Nagarajan | 57aac7c | 2012-04-30 14:20:30 -0700 | [diff] [blame] | 372 | enum nl80211_channel_type ch_type; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 373 | #endif |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 374 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 375 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 376 | struct sta_info_debugfsdentries { |
| 377 | struct dentry *dir; |
Johannes Berg | 63044e9 | 2008-10-07 12:04:29 +0200 | [diff] [blame] | 378 | bool add_has_run; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 379 | } debugfs; |
| 380 | #endif |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 381 | |
Johannes Berg | 99ba2a1 | 2010-11-24 08:10:06 +0100 | [diff] [blame] | 382 | unsigned int lost_packets; |
Paul Stewart | a85e1d5 | 2011-12-09 11:01:49 -0800 | [diff] [blame] | 383 | unsigned int beacon_loss_count; |
Johannes Berg | 99ba2a1 | 2010-11-24 08:10:06 +0100 | [diff] [blame] | 384 | |
Johannes Berg | 64f68e5 | 2012-03-28 10:58:37 +0200 | [diff] [blame] | 385 | bool supports_40mhz; |
| 386 | |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 387 | /* keep last! */ |
| 388 | struct ieee80211_sta sta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 389 | }; |
| 390 | |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 391 | 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] | 392 | { |
| 393 | #ifdef CONFIG_MAC80211_MESH |
| 394 | return sta->plink_state; |
| 395 | #endif |
Javier Cardona | 57cf804 | 2011-05-13 10:45:43 -0700 | [diff] [blame] | 396 | return NL80211_PLINK_LISTEN; |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 397 | } |
| 398 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 399 | static inline void set_sta_flag(struct sta_info *sta, |
| 400 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 401 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 402 | WARN_ON(flag == WLAN_STA_AUTH || |
| 403 | flag == WLAN_STA_ASSOC || |
| 404 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 405 | set_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 406 | } |
| 407 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 408 | static inline void clear_sta_flag(struct sta_info *sta, |
| 409 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 410 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 411 | WARN_ON(flag == WLAN_STA_AUTH || |
| 412 | flag == WLAN_STA_ASSOC || |
| 413 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 414 | clear_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 415 | } |
| 416 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 417 | static inline int test_sta_flag(struct sta_info *sta, |
| 418 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 419 | { |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 420 | return test_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 421 | } |
| 422 | |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 423 | static inline int test_and_clear_sta_flag(struct sta_info *sta, |
| 424 | enum ieee80211_sta_info_flags flag) |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 425 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 426 | WARN_ON(flag == WLAN_STA_AUTH || |
| 427 | flag == WLAN_STA_ASSOC || |
| 428 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | c2c98fd | 2011-09-29 16:04:36 +0200 | [diff] [blame] | 429 | return test_and_clear_bit(flag, &sta->_flags); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 430 | } |
| 431 | |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 432 | static inline int test_and_set_sta_flag(struct sta_info *sta, |
| 433 | enum ieee80211_sta_info_flags flag) |
| 434 | { |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 435 | WARN_ON(flag == WLAN_STA_AUTH || |
| 436 | flag == WLAN_STA_ASSOC || |
| 437 | flag == WLAN_STA_AUTHORIZED); |
Johannes Berg | e7f4a94 | 2011-11-04 11:18:20 +0100 | [diff] [blame] | 438 | return test_and_set_bit(flag, &sta->_flags); |
| 439 | } |
| 440 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 441 | int sta_info_move_state(struct sta_info *sta, |
| 442 | enum ieee80211_sta_state new_state); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 443 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 444 | static inline void sta_info_pre_move_state(struct sta_info *sta, |
| 445 | enum ieee80211_sta_state new_state) |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 446 | { |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 447 | int ret; |
| 448 | |
| 449 | WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); |
| 450 | |
| 451 | ret = sta_info_move_state(sta, new_state); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 452 | WARN_ON_ONCE(ret); |
| 453 | } |
| 454 | |
| 455 | |
Johannes Berg | ec034b2 | 2011-05-13 13:35:40 +0200 | [diff] [blame] | 456 | void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
| 457 | struct tid_ampdu_tx *tid_tx); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 458 | |
Johannes Berg | 40b275b | 2011-05-13 14:15:49 +0200 | [diff] [blame] | 459 | static inline struct tid_ampdu_tx * |
| 460 | rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) |
| 461 | { |
| 462 | return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], |
| 463 | lockdep_is_held(&sta->lock) || |
| 464 | lockdep_is_held(&sta->ampdu_mlme.mtx)); |
| 465 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 466 | |
| 467 | #define STA_HASH_SIZE 256 |
| 468 | #define STA_HASH(sta) (sta[5]) |
| 469 | |
| 470 | |
Johannes Berg | 948d887 | 2011-09-29 16:04:29 +0200 | [diff] [blame] | 471 | /* Maximum number of frames to buffer per power saving station per AC */ |
| 472 | #define STA_MAX_TX_BUFFER 64 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 473 | |
| 474 | /* Minimum buffered frame expiry time. If STA uses listen interval that is |
| 475 | * smaller than this value, the minimum value here is used instead. */ |
| 476 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) |
| 477 | |
| 478 | /* How often station data is cleaned up (e.g., expiration of buffered frames) |
| 479 | */ |
| 480 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
| 481 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 482 | /* |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 483 | * Get a STA info, must be under RCU read lock. |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 484 | */ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 485 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
| 486 | const u8 *addr); |
| 487 | |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 488 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
| 489 | const u8 *addr); |
| 490 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 491 | static inline |
| 492 | void for_each_sta_info_type_check(struct ieee80211_local *local, |
| 493 | const u8 *addr, |
| 494 | struct sta_info *sta, |
| 495 | struct sta_info *nxt) |
| 496 | { |
| 497 | } |
| 498 | |
Johannes Berg | 7852e36 | 2012-01-20 13:55:24 +0100 | [diff] [blame] | 499 | #define for_each_sta_info(local, _addr, _sta, nxt) \ |
Guy Eilam | 2a33bee | 2011-08-17 15:18:15 +0300 | [diff] [blame] | 500 | for ( /* initialise loop */ \ |
| 501 | _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
| 502 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ |
| 503 | /* typecheck */ \ |
| 504 | for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
| 505 | /* continue condition */ \ |
| 506 | _sta; \ |
| 507 | /* advance loop */ \ |
| 508 | _sta = nxt, \ |
| 509 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ |
| 510 | ) \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 511 | /* compare address and run code only if it matches */ \ |
Joe Perches | 3bc7945 | 2012-05-08 18:56:53 +0000 | [diff] [blame] | 512 | if (ether_addr_equal(_sta->sta.addr, (_addr))) |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 513 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 514 | /* |
| 515 | * Get STA info by index, BROKEN! |
| 516 | */ |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 517 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
| 518 | int idx); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 519 | /* |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 520 | * Create a new STA info, caller owns returned structure |
| 521 | * until sta_info_insert(). |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 522 | */ |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 523 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | 5654416 | 2011-12-14 13:28:46 +0100 | [diff] [blame] | 524 | const u8 *addr, gfp_t gfp); |
Johannes Berg | d9a7ddb | 2011-12-14 12:35:30 +0100 | [diff] [blame] | 525 | |
| 526 | void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); |
| 527 | |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 528 | /* |
| 529 | * Insert STA info into hash table/list, returns zero or a |
| 530 | * -EEXIST if (if the same MAC address is already present). |
| 531 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 532 | * Calling the non-rcu version makes the caller relinquish, |
| 533 | * the _rcu version calls read_lock_rcu() and must be called |
| 534 | * without it held. |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 535 | */ |
| 536 | int sta_info_insert(struct sta_info *sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 537 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 538 | |
Johannes Berg | 83d5cc0 | 2012-01-12 09:31:10 +0100 | [diff] [blame] | 539 | int __must_check __sta_info_destroy(struct sta_info *sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 540 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
| 541 | const u8 *addr); |
| 542 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
| 543 | const u8 *addr); |
| 544 | |
Johannes Berg | c868cb35 | 2011-09-29 16:04:27 +0200 | [diff] [blame] | 545 | void sta_info_recalc_tim(struct sta_info *sta); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 546 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 547 | void sta_info_init(struct ieee80211_local *local); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 548 | void sta_info_stop(struct ieee80211_local *local); |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 549 | int sta_info_flush(struct ieee80211_local *local, |
Johannes Berg | af8cdcd | 2009-04-19 21:25:43 +0200 | [diff] [blame] | 550 | struct ieee80211_sub_if_data *sdata); |
Thomas Pedersen | 6b62bf3 | 2012-03-05 15:31:48 -0800 | [diff] [blame] | 551 | void sta_set_rate_info_tx(struct sta_info *sta, |
| 552 | const struct ieee80211_tx_rate *rate, |
| 553 | struct rate_info *rinfo); |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 554 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
| 555 | unsigned long exp_time); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 556 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 557 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
| 558 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); |
Johannes Berg | 47086fc | 2011-09-29 16:04:33 +0200 | [diff] [blame] | 559 | void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 560 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 561 | #endif /* STA_INFO_H */ |