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> |
Johannes Berg | 2c8dccc | 2008-04-08 15:14:40 -0400 | [diff] [blame] | 16 | #include "key.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 17 | |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 18 | /** |
| 19 | * enum ieee80211_sta_info_flags - Stations flags |
| 20 | * |
| 21 | * These flags are used with &struct sta_info's @flags member. |
| 22 | * |
| 23 | * @WLAN_STA_AUTH: Station is authenticated. |
| 24 | * @WLAN_STA_ASSOC: Station is associated. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 25 | * @WLAN_STA_PS_STA: Station is in power-save mode |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 26 | * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
| 27 | * This bit is always checked so needs to be enabled for all stations |
| 28 | * when virtual port control is not in use. |
| 29 | * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble |
| 30 | * frames. |
| 31 | * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP. |
| 32 | * @WLAN_STA_WME: Station is a QoS-STA. |
| 33 | * @WLAN_STA_WDS: Station is one of our WDS peers. |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 34 | * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 35 | * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 36 | * frame to this station is transmitted. |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 37 | * @WLAN_STA_MFP: Management frame protection is used with this STA. |
Johannes Berg | 618f356 | 2010-04-06 11:18:46 +0200 | [diff] [blame] | 38 | * @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] | 39 | * during suspend/resume and station removal. |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 40 | * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
| 41 | * power-save mode logically to flush frames that might still |
| 42 | * be in the queues |
| 43 | * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping |
| 44 | * station in power-save mode, reply when the driver unblocks. |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 45 | */ |
| 46 | enum ieee80211_sta_info_flags { |
| 47 | WLAN_STA_AUTH = 1<<0, |
| 48 | WLAN_STA_ASSOC = 1<<1, |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 49 | WLAN_STA_PS_STA = 1<<2, |
Johannes Berg | 836341a | 2008-02-20 02:07:21 +0100 | [diff] [blame] | 50 | WLAN_STA_AUTHORIZED = 1<<3, |
| 51 | WLAN_STA_SHORT_PREAMBLE = 1<<4, |
| 52 | WLAN_STA_ASSOC_AP = 1<<5, |
| 53 | WLAN_STA_WME = 1<<6, |
| 54 | WLAN_STA_WDS = 1<<7, |
Johannes Berg | d46e144 | 2008-02-20 23:59:33 +0100 | [diff] [blame] | 55 | WLAN_STA_CLEAR_PS_FILT = 1<<9, |
Jouni Malinen | 5394af4 | 2009-01-08 13:31:59 +0200 | [diff] [blame] | 56 | WLAN_STA_MFP = 1<<10, |
Johannes Berg | 618f356 | 2010-04-06 11:18:46 +0200 | [diff] [blame] | 57 | WLAN_STA_BLOCK_BA = 1<<11, |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 58 | WLAN_STA_PS_DRIVER = 1<<12, |
| 59 | WLAN_STA_PSPOLL = 1<<13, |
Johannes Berg | 238814f | 2008-01-28 17:19:37 +0100 | [diff] [blame] | 60 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 61 | |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 62 | #define STA_TID_NUM 16 |
| 63 | #define ADDBA_RESP_INTERVAL HZ |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 64 | #define HT_AGG_MAX_RETRIES 0x3 |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 65 | |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 66 | #define HT_AGG_STATE_DRV_READY 0 |
| 67 | #define HT_AGG_STATE_RESPONSE_RECEIVED 1 |
| 68 | #define HT_AGG_STATE_OPERATIONAL 2 |
| 69 | #define HT_AGG_STATE_STOPPING 3 |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 70 | #define HT_AGG_STATE_WANT_START 4 |
| 71 | #define HT_AGG_STATE_WANT_STOP 5 |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 72 | |
| 73 | /** |
| 74 | * struct tid_ampdu_tx - TID aggregation information (Tx). |
| 75 | * |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 76 | * @rcu_head: rcu head for freeing structure |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 77 | * @addba_resp_timer: timer for peer's response to addba request |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 78 | * @pending: pending frames queue -- use sta's spinlock to protect |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 79 | * @dialog_token: dialog token for aggregation session |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 80 | * @state: session state (see above) |
| 81 | * @stop_initiator: initiator of a session stop |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 82 | * @tx_stop: TX DelBA frame when stopping |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 83 | * |
| 84 | * This structure is protected by RCU and the per-station |
| 85 | * spinlock. Assignments to the array holding it must hold |
| 86 | * the spinlock, only the TX path can access it under RCU |
| 87 | * lock-free if, and only if, the state has the flag |
| 88 | * %HT_AGG_STATE_OPERATIONAL set. Otherwise, the TX path |
| 89 | * must also acquire the spinlock and re-check the state, |
| 90 | * see comments in the tx code touching it. |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 91 | */ |
| 92 | struct tid_ampdu_tx { |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 93 | struct rcu_head rcu_head; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 94 | struct timer_list addba_resp_timer; |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 95 | struct sk_buff_head pending; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 96 | unsigned long state; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 97 | u8 dialog_token; |
Johannes Berg | a622ab7 | 2010-06-10 10:21:39 +0200 | [diff] [blame] | 98 | u8 stop_initiator; |
Johannes Berg | 53f73c0 | 2010-10-05 19:37:40 +0200 | [diff] [blame] | 99 | bool tx_stop; |
Ron Rindjunsky | 80656c2 | 2008-01-28 14:07:16 +0200 | [diff] [blame] | 100 | }; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 101 | |
| 102 | /** |
| 103 | * struct tid_ampdu_rx - TID aggregation information (Rx). |
| 104 | * |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 105 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 106 | * @reorder_time: jiffies when skb was added |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 107 | * @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] | 108 | * @reorder_timer: releases expired frames from the reorder buffer. |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 109 | * @head_seq_num: head sequence number in reordering buffer. |
| 110 | * @stored_mpdu_num: number of MPDUs in reordering buffer |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 111 | * @ssn: Starting Sequence Number expected to be aggregated. |
| 112 | * @buf_size: buffer size for incoming A-MPDUs |
Johannes Berg | 20ad19d | 2009-02-10 21:25:45 +0100 | [diff] [blame] | 113 | * @timeout: reset timer value (in TUs). |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 114 | * @dialog_token: dialog token for aggregation session |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 115 | * @rcu_head: RCU head used for freeing this struct |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 116 | * @reorder_lock: serializes access to reorder buffer, see below. |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 117 | * |
| 118 | * This structure is protected by RCU and the per-station |
| 119 | * spinlock. Assignments to the array holding it must hold |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 120 | * the spinlock. |
| 121 | * |
| 122 | * The @reorder_lock is used to protect the variables and |
| 123 | * arrays such as @reorder_buf, @reorder_time, @head_seq_num, |
| 124 | * @stored_mpdu_num and @reorder_time from being corrupted by |
| 125 | * concurrent access of the RX path and the expired frame |
| 126 | * release timer. |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 127 | */ |
| 128 | struct tid_ampdu_rx { |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 129 | struct rcu_head rcu_head; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 130 | spinlock_t reorder_lock; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 131 | struct sk_buff **reorder_buf; |
Jouni Malinen | 4d050f1 | 2009-05-05 20:35:14 +0300 | [diff] [blame] | 132 | unsigned long *reorder_time; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 133 | struct timer_list session_timer; |
Christian Lamparter | 2bff8eb | 2010-08-05 01:36:41 +0200 | [diff] [blame] | 134 | struct timer_list reorder_timer; |
Johannes Berg | 056cdd5 | 2008-03-26 23:21:47 +0100 | [diff] [blame] | 135 | u16 head_seq_num; |
| 136 | u16 stored_mpdu_num; |
Ron Rindjunsky | cee24a3 | 2008-03-26 20:36:03 +0200 | [diff] [blame] | 137 | u16 ssn; |
| 138 | u16 buf_size; |
| 139 | u16 timeout; |
| 140 | u8 dialog_token; |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 141 | }; |
| 142 | |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 143 | /** |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 144 | * struct sta_ampdu_mlme - STA aggregation information. |
| 145 | * |
Johannes Berg | a87f736 | 2010-06-10 10:21:38 +0200 | [diff] [blame] | 146 | * @tid_rx: aggregation info for Rx per TID -- RCU protected |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 147 | * @tid_tx: aggregation info for Tx per TID |
| 148 | * @addba_req_num: number of times addBA request has been sent. |
| 149 | * @dialog_token_allocator: dialog token enumerator for each new session; |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 150 | * @work: work struct for starting/stopping aggregation |
Johannes Berg | 7c3b1dd | 2010-06-10 10:21:44 +0200 | [diff] [blame] | 151 | * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
| 152 | * RX timer expired until the work for it runs |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 153 | * @mtx: mutex to protect all TX data (except non-NULL assignments |
| 154 | * to tid_tx[idx], which are protected by the sta spinlock) |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 155 | */ |
| 156 | struct sta_ampdu_mlme { |
Johannes Berg | a93e364 | 2010-06-10 10:21:46 +0200 | [diff] [blame] | 157 | struct mutex mtx; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 158 | /* rx */ |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 159 | struct tid_ampdu_rx *tid_rx[STA_TID_NUM]; |
Johannes Berg | 7c3b1dd | 2010-06-10 10:21:44 +0200 | [diff] [blame] | 160 | unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)]; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 161 | /* tx */ |
Johannes Berg | 0ab3370 | 2010-06-10 10:21:42 +0200 | [diff] [blame] | 162 | struct work_struct work; |
Johannes Berg | fcea600 | 2010-05-31 11:40:23 +0200 | [diff] [blame] | 163 | struct tid_ampdu_tx *tid_tx[STA_TID_NUM]; |
| 164 | u8 addba_req_num[STA_TID_NUM]; |
| 165 | u8 dialog_token_allocator; |
| 166 | }; |
| 167 | |
| 168 | |
| 169 | /** |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 170 | * enum plink_state - state of a mesh peer link finite state machine |
| 171 | * |
| 172 | * @PLINK_LISTEN: initial state, considered the implicit state of non existant |
| 173 | * mesh peer links |
| 174 | * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer |
| 175 | * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer |
| 176 | * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh |
| 177 | * peer |
| 178 | * @PLINK_ESTAB: mesh peer link is established |
| 179 | * @PLINK_HOLDING: mesh peer link is being closed or cancelled |
| 180 | * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded |
| 181 | */ |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 182 | enum plink_state { |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 183 | PLINK_LISTEN, |
| 184 | PLINK_OPN_SNT, |
| 185 | PLINK_OPN_RCVD, |
| 186 | PLINK_CNF_RCVD, |
| 187 | PLINK_ESTAB, |
| 188 | PLINK_HOLDING, |
| 189 | PLINK_BLOCKED |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 190 | }; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 191 | |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 192 | /** |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 193 | * struct sta_info - STA information |
| 194 | * |
| 195 | * This structure collects information about a station that |
| 196 | * mac80211 is communicating with. |
| 197 | * |
| 198 | * @list: global linked list entry |
| 199 | * @hnext: hash table linked list pointer |
| 200 | * @local: pointer to the global information |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 201 | * @sdata: virtual interface this station belongs to |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 202 | * @ptk: peer key negotiated with this station, if any |
| 203 | * @gtk: group keys negotiated with this station, if any |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 204 | * @rate_ctrl: rate control algorithm reference |
| 205 | * @rate_ctrl_priv: rate control private per-STA pointer |
| 206 | * @last_tx_rate: rate used for last transmit, to report to userspace as |
| 207 | * "the" transmit rate |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 208 | * @lock: used for locking all fields that require locking, see comments |
| 209 | * in the header file. |
| 210 | * @flaglock: spinlock for flags accesses |
Jaswinder Singh Rajput | 841507f | 2009-11-22 13:47:58 +0530 | [diff] [blame] | 211 | * @drv_unblock_wk: used for driver PS unblocking |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 212 | * @listen_interval: listen interval of this station, when we're acting as AP |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 213 | * @flags: STA flags, see &enum ieee80211_sta_info_flags |
| 214 | * @ps_tx_buf: buffer of frames to transmit to this station |
| 215 | * when it leaves power saving state |
| 216 | * @tx_filtered: buffer of frames we already tried to transmit |
| 217 | * but were filtered by hardware due to STA having entered |
| 218 | * power saving state |
| 219 | * @rx_packets: Number of MSDUs received from this STA |
| 220 | * @rx_bytes: Number of bytes received from this STA |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 221 | * @wep_weak_iv_count: number of weak WEP IVs received from this station |
| 222 | * @last_rx: time (in jiffies) when last frame was received from this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 223 | * @num_duplicates: number of duplicate frames received from this STA |
| 224 | * @rx_fragments: number of received MPDUs |
| 225 | * @rx_dropped: number of dropped MPDUs from this STA |
| 226 | * @last_signal: signal of last received frame from this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 227 | * @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] | 228 | * @tx_filtered_count: number of frames the hardware filtered for this STA |
| 229 | * @tx_retry_failed: number of frames that failed retry |
| 230 | * @tx_retry_count: total number of retries for frames to this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 231 | * @fail_avg: moving percentage of failed MSDUs |
| 232 | * @tx_packets: number of RX/TX MSDUs |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 233 | * @tx_bytes: number of bytes transmitted to this STA |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 234 | * @tx_fragments: number of transmitted MPDUs |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 235 | * @tid_seq: per-TID sequence numbers for sending to this STA |
| 236 | * @ampdu_mlme: A-MPDU state machine state |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 237 | * @timer_to_tid: identity mapping to ID timers |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 238 | * @llid: Local link ID |
| 239 | * @plid: Peer link ID |
| 240 | * @reason: Cancel reason on PLINK_HOLDING state |
| 241 | * @plink_retries: Retries in establishment |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 242 | * @ignore_plink_timer: ignore the peer-link timer (used internally) |
| 243 | * @plink_state: peer link state |
| 244 | * @plink_timeout: timeout of peer link |
| 245 | * @plink_timer: peer link watch timer |
Johannes Berg | cce4c77 | 2009-05-19 10:39:34 +0200 | [diff] [blame] | 246 | * @plink_timer_was_running: used by suspend/resume to restore timers |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 247 | * @debugfs: debug filesystem info |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 248 | * @sta: station information we share with the driver |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 249 | * @dead: set to true when sta is unlinked |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 250 | * @uploaded: set to true when sta is uploaded to the driver |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 251 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 252 | struct sta_info { |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 253 | /* General information, mostly static */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 254 | struct list_head list; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 255 | struct sta_info *hnext; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 256 | struct ieee80211_local *local; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 257 | struct ieee80211_sub_if_data *sdata; |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 258 | struct ieee80211_key *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
| 259 | struct ieee80211_key *ptk; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 260 | struct rate_control_ref *rate_ctrl; |
| 261 | void *rate_ctrl_priv; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 262 | spinlock_t lock; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 263 | spinlock_t flaglock; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 264 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 265 | struct work_struct drv_unblock_wk; |
| 266 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 267 | u16 listen_interval; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 268 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 269 | bool dead; |
| 270 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 271 | bool uploaded; |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 272 | |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 273 | /* |
| 274 | * frequently updated, locked with own spinlock (flaglock), |
| 275 | * use the accessors defined below |
| 276 | */ |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 277 | u32 flags; |
| 278 | |
| 279 | /* |
| 280 | * STA powersave frame queues, no more than the internal |
| 281 | * locking required. |
| 282 | */ |
| 283 | struct sk_buff_head ps_tx_buf; |
| 284 | struct sk_buff_head tx_filtered; |
| 285 | |
| 286 | /* Updated from RX path only, no locking requirements */ |
| 287 | unsigned long rx_packets, rx_bytes; |
| 288 | unsigned long wep_weak_iv_count; |
| 289 | unsigned long last_rx; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 290 | unsigned long num_duplicates; |
| 291 | unsigned long rx_fragments; |
| 292 | unsigned long rx_dropped; |
| 293 | int last_signal; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 294 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 295 | |
| 296 | /* Updated from TX status path only, no locking requirements */ |
| 297 | unsigned long tx_filtered_count; |
| 298 | unsigned long tx_retry_failed, tx_retry_count; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 299 | /* moving percentage of failed MSDUs */ |
| 300 | unsigned int fail_avg; |
| 301 | |
| 302 | /* Updated from TX path only, no locking requirements */ |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 303 | unsigned long tx_packets; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 304 | unsigned long tx_bytes; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 305 | unsigned long tx_fragments; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 306 | struct ieee80211_tx_rate last_tx_rate; |
Johannes Berg | f591fa5 | 2008-07-10 11:21:26 +0200 | [diff] [blame] | 307 | u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 308 | |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 309 | /* |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 310 | * Aggregation information, locked with lock. |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 311 | */ |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 312 | struct sta_ampdu_mlme ampdu_mlme; |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 313 | u8 timer_to_tid[STA_TID_NUM]; |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 314 | |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 315 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 693b1bb | 2008-02-25 16:27:48 +0100 | [diff] [blame] | 316 | /* |
| 317 | * Mesh peer link attributes |
| 318 | * TODO: move to a sub-structure that is referenced with pointer? |
| 319 | */ |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 320 | __le16 llid; |
| 321 | __le16 plid; |
| 322 | __le16 reason; |
| 323 | u8 plink_retries; |
Johannes Berg | 7495883 | 2008-02-25 22:17:30 +0100 | [diff] [blame] | 324 | bool ignore_plink_timer; |
Johannes Berg | 5bb644a | 2009-05-17 11:40:42 +0200 | [diff] [blame] | 325 | bool plink_timer_was_running; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 326 | enum plink_state plink_state; |
| 327 | u32 plink_timeout; |
| 328 | struct timer_list plink_timer; |
Luis Carlos Cobo | ee38585 | 2008-02-23 15:17:11 +0100 | [diff] [blame] | 329 | #endif |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 330 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 331 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 332 | struct sta_info_debugfsdentries { |
| 333 | struct dentry *dir; |
Johannes Berg | 63044e9 | 2008-10-07 12:04:29 +0200 | [diff] [blame] | 334 | bool add_has_run; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 335 | } debugfs; |
| 336 | #endif |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 337 | |
| 338 | /* keep last! */ |
| 339 | struct ieee80211_sta sta; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 340 | }; |
| 341 | |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 342 | static inline enum plink_state sta_plink_state(struct sta_info *sta) |
| 343 | { |
| 344 | #ifdef CONFIG_MAC80211_MESH |
| 345 | return sta->plink_state; |
| 346 | #endif |
Luis Carlos Cobo | b4e08ea | 2008-02-29 15:46:08 -0800 | [diff] [blame] | 347 | return PLINK_LISTEN; |
Johannes Berg | d6d1a5a | 2008-02-25 16:24:38 +0100 | [diff] [blame] | 348 | } |
| 349 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 350 | static inline void set_sta_flags(struct sta_info *sta, const u32 flags) |
| 351 | { |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 352 | unsigned long irqfl; |
| 353 | |
| 354 | spin_lock_irqsave(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 355 | sta->flags |= flags; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 356 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static inline void clear_sta_flags(struct sta_info *sta, const u32 flags) |
| 360 | { |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 361 | unsigned long irqfl; |
| 362 | |
| 363 | spin_lock_irqsave(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 364 | sta->flags &= ~flags; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 365 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 366 | } |
| 367 | |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 368 | static inline u32 test_sta_flags(struct sta_info *sta, const u32 flags) |
| 369 | { |
| 370 | u32 ret; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 371 | unsigned long irqfl; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 372 | |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 373 | spin_lock_irqsave(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 374 | ret = sta->flags & flags; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 375 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 376 | |
| 377 | return ret; |
| 378 | } |
| 379 | |
| 380 | static inline u32 test_and_clear_sta_flags(struct sta_info *sta, |
| 381 | const u32 flags) |
| 382 | { |
| 383 | u32 ret; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 384 | unsigned long irqfl; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 385 | |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 386 | spin_lock_irqsave(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 387 | ret = sta->flags & flags; |
| 388 | sta->flags &= ~flags; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 389 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 390 | |
| 391 | return ret; |
| 392 | } |
| 393 | |
| 394 | static inline u32 get_sta_flags(struct sta_info *sta) |
| 395 | { |
| 396 | u32 ret; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 397 | unsigned long irqfl; |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 398 | |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 399 | spin_lock_irqsave(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 400 | ret = sta->flags; |
Johannes Berg | 5a9f7b0 | 2008-06-18 14:58:09 +0200 | [diff] [blame] | 401 | spin_unlock_irqrestore(&sta->flaglock, irqfl); |
Johannes Berg | 07346f81 | 2008-05-03 01:02:02 +0200 | [diff] [blame] | 402 | |
| 403 | return ret; |
| 404 | } |
| 405 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 406 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 407 | |
| 408 | #define STA_HASH_SIZE 256 |
| 409 | #define STA_HASH(sta) (sta[5]) |
| 410 | |
| 411 | |
| 412 | /* Maximum number of frames to buffer per power saving station */ |
| 413 | #define STA_MAX_TX_BUFFER 128 |
| 414 | |
| 415 | /* Minimum buffered frame expiry time. If STA uses listen interval that is |
| 416 | * smaller than this value, the minimum value here is used instead. */ |
| 417 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) |
| 418 | |
| 419 | /* How often station data is cleaned up (e.g., expiration of buffered frames) |
| 420 | */ |
| 421 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
| 422 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 423 | /* |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 424 | * Get a STA info, must be under RCU read lock. |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 425 | */ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 426 | struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
| 427 | const u8 *addr); |
| 428 | |
Felix Fietkau | 0e5ded5 | 2010-01-08 18:10:58 +0100 | [diff] [blame] | 429 | struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
| 430 | const u8 *addr); |
| 431 | |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 432 | static inline |
| 433 | void for_each_sta_info_type_check(struct ieee80211_local *local, |
| 434 | const u8 *addr, |
| 435 | struct sta_info *sta, |
| 436 | struct sta_info *nxt) |
| 437 | { |
| 438 | } |
| 439 | |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 440 | #define for_each_sta_info(local, _addr, _sta, nxt) \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 441 | for ( /* initialise loop */ \ |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 442 | _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
| 443 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 444 | /* typecheck */ \ |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 445 | for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 446 | /* continue condition */ \ |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 447 | _sta; \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 448 | /* advance loop */ \ |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 449 | _sta = nxt, \ |
| 450 | nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 451 | ) \ |
| 452 | /* compare address and run code only if it matches */ \ |
Felix Fietkau | 38bdb65 | 2010-06-25 01:44:33 +0200 | [diff] [blame] | 453 | if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0) |
Johannes Berg | abe6063 | 2009-11-25 17:46:18 +0100 | [diff] [blame] | 454 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 455 | /* |
| 456 | * Get STA info by index, BROKEN! |
| 457 | */ |
Johannes Berg | 3b53fde8 | 2009-11-16 12:00:37 +0100 | [diff] [blame] | 458 | struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
| 459 | int idx); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 460 | /* |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 461 | * Create a new STA info, caller owns returned structure |
| 462 | * until sta_info_insert(). |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 463 | */ |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 464 | struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
| 465 | u8 *addr, gfp_t gfp); |
| 466 | /* |
| 467 | * Insert STA info into hash table/list, returns zero or a |
| 468 | * -EEXIST if (if the same MAC address is already present). |
| 469 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 470 | * Calling the non-rcu version makes the caller relinquish, |
| 471 | * the _rcu version calls read_lock_rcu() and must be called |
| 472 | * without it held. |
Johannes Berg | 73651ee | 2008-02-25 16:27:47 +0100 | [diff] [blame] | 473 | */ |
| 474 | int sta_info_insert(struct sta_info *sta); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 475 | int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
| 476 | int sta_info_insert_atomic(struct sta_info *sta); |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 477 | |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 478 | int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
| 479 | const u8 *addr); |
| 480 | int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
| 481 | const u8 *addr); |
| 482 | |
Johannes Berg | d0709a6 | 2008-02-25 16:27:46 +0100 | [diff] [blame] | 483 | void sta_info_set_tim_bit(struct sta_info *sta); |
| 484 | void sta_info_clear_tim_bit(struct sta_info *sta); |
| 485 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 486 | void sta_info_init(struct ieee80211_local *local); |
| 487 | int sta_info_start(struct ieee80211_local *local); |
| 488 | void sta_info_stop(struct ieee80211_local *local); |
Johannes Berg | 44213b5 | 2008-02-25 16:27:49 +0100 | [diff] [blame] | 489 | int sta_info_flush(struct ieee80211_local *local, |
Johannes Berg | af8cdcd | 2009-04-19 21:25:43 +0200 | [diff] [blame] | 490 | struct ieee80211_sub_if_data *sdata); |
Johannes Berg | 24723d1 | 2008-09-11 00:01:46 +0200 | [diff] [blame] | 491 | void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
| 492 | unsigned long exp_time); |
Johannes Berg | 004c872 | 2008-02-20 11:21:35 +0100 | [diff] [blame] | 493 | |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 494 | void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
| 495 | void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); |
| 496 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 497 | #endif /* STA_INFO_H */ |