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933 lines
30 KiB
933 lines
30 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright 2002-2005, Devicescape Software, Inc. |
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* Copyright 2013-2014 Intel Mobile Communications GmbH |
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* Copyright(c) 2015-2017 Intel Deutschland GmbH |
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* Copyright(c) 2020-2021 Intel Corporation |
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*/ |
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#ifndef STA_INFO_H |
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#define STA_INFO_H |
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#include <linux/list.h> |
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#include <linux/types.h> |
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#include <linux/if_ether.h> |
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#include <linux/workqueue.h> |
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#include <linux/average.h> |
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#include <linux/bitfield.h> |
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#include <linux/etherdevice.h> |
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#include <linux/rhashtable.h> |
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#include <linux/u64_stats_sync.h> |
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#include "key.h" |
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|
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/** |
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* enum ieee80211_sta_info_flags - Stations flags |
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* |
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* These flags are used with &struct sta_info's @flags member, but |
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* only indirectly with set_sta_flag() and friends. |
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* |
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* @WLAN_STA_AUTH: Station is authenticated. |
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* @WLAN_STA_ASSOC: Station is associated. |
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* @WLAN_STA_PS_STA: Station is in power-save mode |
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* @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
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* This bit is always checked so needs to be enabled for all stations |
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* when virtual port control is not in use. |
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* @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble |
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* frames. |
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* @WLAN_STA_WDS: Station is one of our WDS peers. |
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* @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
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* IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
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* frame to this station is transmitted. |
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* @WLAN_STA_MFP: Management frame protection is used with this STA. |
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* @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
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* during suspend/resume and station removal. |
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* @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
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* power-save mode logically to flush frames that might still |
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* be in the queues |
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* @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping |
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* station in power-save mode, reply when the driver unblocks. |
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* @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
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* @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct |
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* packets. This means the link is enabled. |
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* @WLAN_STA_TDLS_INITIATOR: We are the initiator of the TDLS link with this |
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* station. |
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* @WLAN_STA_TDLS_CHAN_SWITCH: This TDLS peer supports TDLS channel-switching |
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* @WLAN_STA_TDLS_OFF_CHANNEL: The local STA is currently off-channel with this |
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* TDLS peer |
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* @WLAN_STA_TDLS_WIDER_BW: This TDLS peer supports working on a wider bw on |
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* the BSS base channel. |
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* @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
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* keeping station in power-save mode, reply when the driver |
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* unblocks the station. |
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* @WLAN_STA_SP: Station is in a service period, so don't try to |
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* reply to other uAPSD trigger frames or PS-Poll. |
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* @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
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* @WLAN_STA_INSERTED: This station is inserted into the hash table. |
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* @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
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* @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
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* @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period. |
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* @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP. |
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* @WLAN_STA_PS_DELIVER: station woke up, but we're still blocking TX |
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* until pending frames are delivered |
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* @WLAN_STA_USES_ENCRYPTION: This station was configured for encryption, |
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* so drop all packets without a key later. |
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* @WLAN_STA_DECAP_OFFLOAD: This station uses rx decap offload |
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* |
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* @NUM_WLAN_STA_FLAGS: number of defined flags |
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*/ |
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enum ieee80211_sta_info_flags { |
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WLAN_STA_AUTH, |
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WLAN_STA_ASSOC, |
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WLAN_STA_PS_STA, |
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WLAN_STA_AUTHORIZED, |
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WLAN_STA_SHORT_PREAMBLE, |
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WLAN_STA_WDS, |
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WLAN_STA_CLEAR_PS_FILT, |
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WLAN_STA_MFP, |
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WLAN_STA_BLOCK_BA, |
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WLAN_STA_PS_DRIVER, |
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WLAN_STA_PSPOLL, |
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WLAN_STA_TDLS_PEER, |
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WLAN_STA_TDLS_PEER_AUTH, |
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WLAN_STA_TDLS_INITIATOR, |
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WLAN_STA_TDLS_CHAN_SWITCH, |
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WLAN_STA_TDLS_OFF_CHANNEL, |
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WLAN_STA_TDLS_WIDER_BW, |
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WLAN_STA_UAPSD, |
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WLAN_STA_SP, |
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WLAN_STA_4ADDR_EVENT, |
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WLAN_STA_INSERTED, |
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WLAN_STA_RATE_CONTROL, |
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WLAN_STA_TOFFSET_KNOWN, |
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WLAN_STA_MPSP_OWNER, |
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WLAN_STA_MPSP_RECIPIENT, |
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WLAN_STA_PS_DELIVER, |
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WLAN_STA_USES_ENCRYPTION, |
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WLAN_STA_DECAP_OFFLOAD, |
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NUM_WLAN_STA_FLAGS, |
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}; |
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#define ADDBA_RESP_INTERVAL HZ |
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#define HT_AGG_MAX_RETRIES 15 |
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#define HT_AGG_BURST_RETRIES 3 |
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#define HT_AGG_RETRIES_PERIOD (15 * HZ) |
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#define HT_AGG_STATE_DRV_READY 0 |
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#define HT_AGG_STATE_RESPONSE_RECEIVED 1 |
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#define HT_AGG_STATE_OPERATIONAL 2 |
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#define HT_AGG_STATE_STOPPING 3 |
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#define HT_AGG_STATE_WANT_START 4 |
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#define HT_AGG_STATE_WANT_STOP 5 |
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#define HT_AGG_STATE_START_CB 6 |
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#define HT_AGG_STATE_STOP_CB 7 |
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#define HT_AGG_STATE_SENT_ADDBA 8 |
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DECLARE_EWMA(avg_signal, 10, 8) |
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enum ieee80211_agg_stop_reason { |
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AGG_STOP_DECLINED, |
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AGG_STOP_LOCAL_REQUEST, |
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AGG_STOP_PEER_REQUEST, |
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AGG_STOP_DESTROY_STA, |
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}; |
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/* Debugfs flags to enable/disable use of RX/TX airtime in scheduler */ |
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#define AIRTIME_USE_TX BIT(0) |
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#define AIRTIME_USE_RX BIT(1) |
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struct airtime_info { |
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u64 rx_airtime; |
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u64 tx_airtime; |
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u64 v_t; |
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u64 last_scheduled; |
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struct list_head list; |
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atomic_t aql_tx_pending; /* Estimated airtime for frames pending */ |
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u32 aql_limit_low; |
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u32 aql_limit_high; |
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u32 weight_reciprocal; |
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u16 weight; |
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}; |
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void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local, |
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struct sta_info *sta, u8 ac, |
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u16 tx_airtime, bool tx_completed); |
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void ieee80211_register_airtime(struct ieee80211_txq *txq, |
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u32 tx_airtime, u32 rx_airtime); |
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struct sta_info; |
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/** |
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* struct tid_ampdu_tx - TID aggregation information (Tx). |
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* |
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* @rcu_head: rcu head for freeing structure |
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* @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
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* @addba_resp_timer: timer for peer's response to addba request |
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* @pending: pending frames queue -- use sta's spinlock to protect |
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* @sta: station we are attached to |
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* @dialog_token: dialog token for aggregation session |
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* @timeout: session timeout value to be filled in ADDBA requests |
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* @tid: TID number |
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* @state: session state (see above) |
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* @last_tx: jiffies of last tx activity |
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* @stop_initiator: initiator of a session stop |
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* @tx_stop: TX DelBA frame when stopping |
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* @buf_size: reorder buffer size at receiver |
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* @failed_bar_ssn: ssn of the last failed BAR tx attempt |
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* @bar_pending: BAR needs to be re-sent |
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* @amsdu: support A-MSDU withing A-MDPU |
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* |
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* This structure's lifetime is managed by RCU, assignments to |
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* the array holding it must hold the aggregation mutex. |
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* |
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* The TX path can access it under RCU lock-free if, and |
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* only if, the state has the flag %HT_AGG_STATE_OPERATIONAL |
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* set. Otherwise, the TX path must also acquire the spinlock |
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* and re-check the state, see comments in the tx code |
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* touching it. |
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*/ |
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struct tid_ampdu_tx { |
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struct rcu_head rcu_head; |
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struct timer_list session_timer; |
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struct timer_list addba_resp_timer; |
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struct sk_buff_head pending; |
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struct sta_info *sta; |
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unsigned long state; |
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unsigned long last_tx; |
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u16 timeout; |
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u8 dialog_token; |
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u8 stop_initiator; |
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bool tx_stop; |
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u16 buf_size; |
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u16 failed_bar_ssn; |
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bool bar_pending; |
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bool amsdu; |
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u8 tid; |
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}; |
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/** |
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* struct tid_ampdu_rx - TID aggregation information (Rx). |
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* |
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* @reorder_buf: buffer to reorder incoming aggregated MPDUs. An MPDU may be an |
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* A-MSDU with individually reported subframes. |
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* @reorder_buf_filtered: bitmap indicating where there are filtered frames in |
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* the reorder buffer that should be ignored when releasing frames |
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* @reorder_time: jiffies when skb was added |
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* @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
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* @reorder_timer: releases expired frames from the reorder buffer. |
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* @sta: station we are attached to |
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* @last_rx: jiffies of last rx activity |
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* @head_seq_num: head sequence number in reordering buffer. |
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* @stored_mpdu_num: number of MPDUs in reordering buffer |
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* @ssn: Starting Sequence Number expected to be aggregated. |
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* @buf_size: buffer size for incoming A-MPDUs |
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* @timeout: reset timer value (in TUs). |
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* @tid: TID number |
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* @rcu_head: RCU head used for freeing this struct |
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* @reorder_lock: serializes access to reorder buffer, see below. |
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* @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and |
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* and ssn. |
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* @removed: this session is removed (but might have been found due to RCU) |
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* @started: this session has started (head ssn or higher was received) |
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* |
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* This structure's lifetime is managed by RCU, assignments to |
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* the array holding it must hold the aggregation mutex. |
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* |
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* The @reorder_lock is used to protect the members of this |
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* struct, except for @timeout, @buf_size and @dialog_token, |
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* which are constant across the lifetime of the struct (the |
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* dialog token being used only for debugging). |
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*/ |
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struct tid_ampdu_rx { |
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struct rcu_head rcu_head; |
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spinlock_t reorder_lock; |
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u64 reorder_buf_filtered; |
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struct sk_buff_head *reorder_buf; |
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unsigned long *reorder_time; |
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struct sta_info *sta; |
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struct timer_list session_timer; |
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struct timer_list reorder_timer; |
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unsigned long last_rx; |
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u16 head_seq_num; |
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u16 stored_mpdu_num; |
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u16 ssn; |
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u16 buf_size; |
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u16 timeout; |
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u8 tid; |
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u8 auto_seq:1, |
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removed:1, |
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started:1; |
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}; |
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/** |
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* struct sta_ampdu_mlme - STA aggregation information. |
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* |
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* @mtx: mutex to protect all TX data (except non-NULL assignments |
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* to tid_tx[idx], which are protected by the sta spinlock) |
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* tid_start_tx is also protected by sta->lock. |
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* @tid_rx: aggregation info for Rx per TID -- RCU protected |
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* @tid_rx_token: dialog tokens for valid aggregation sessions |
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* @tid_rx_timer_expired: bitmap indicating on which TIDs the |
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* RX timer expired until the work for it runs |
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* @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
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* driver requested to close until the work for it runs |
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* @tid_rx_manage_offl: bitmap indicating which BA sessions were requested |
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* to be treated as started/stopped due to offloading |
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* @agg_session_valid: bitmap indicating which TID has a rx BA session open on |
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* @unexpected_agg: bitmap indicating which TID already sent a delBA due to |
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* unexpected aggregation related frames outside a session |
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* @work: work struct for starting/stopping aggregation |
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* @tid_tx: aggregation info for Tx per TID |
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* @tid_start_tx: sessions where start was requested |
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* @last_addba_req_time: timestamp of the last addBA request. |
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* @addba_req_num: number of times addBA request has been sent. |
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* @dialog_token_allocator: dialog token enumerator for each new session; |
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*/ |
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struct sta_ampdu_mlme { |
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struct mutex mtx; |
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/* rx */ |
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struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
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u8 tid_rx_token[IEEE80211_NUM_TIDS]; |
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unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
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unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
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unsigned long tid_rx_manage_offl[BITS_TO_LONGS(2 * IEEE80211_NUM_TIDS)]; |
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unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
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unsigned long unexpected_agg[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
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/* tx */ |
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struct work_struct work; |
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struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
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struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; |
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unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; |
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u8 addba_req_num[IEEE80211_NUM_TIDS]; |
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u8 dialog_token_allocator; |
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}; |
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/* Value to indicate no TID reservation */ |
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#define IEEE80211_TID_UNRESERVED 0xff |
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#define IEEE80211_FAST_XMIT_MAX_IV 18 |
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/** |
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* struct ieee80211_fast_tx - TX fastpath information |
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* @key: key to use for hw crypto |
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* @hdr: the 802.11 header to put with the frame |
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* @hdr_len: actual 802.11 header length |
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* @sa_offs: offset of the SA |
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* @da_offs: offset of the DA |
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* @pn_offs: offset where to put PN for crypto (or 0 if not needed) |
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* @band: band this will be transmitted on, for tx_info |
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* @rcu_head: RCU head to free this struct |
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* |
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* This struct is small enough so that the common case (maximum crypto |
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* header length of 8 like for CCMP/GCMP) fits into a single 64-byte |
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* cache line. |
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*/ |
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struct ieee80211_fast_tx { |
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struct ieee80211_key *key; |
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u8 hdr_len; |
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u8 sa_offs, da_offs, pn_offs; |
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u8 band; |
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u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV + |
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sizeof(rfc1042_header)] __aligned(2); |
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struct rcu_head rcu_head; |
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}; |
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/** |
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* struct ieee80211_fast_rx - RX fastpath information |
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* @dev: netdevice for reporting the SKB |
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* @vif_type: (P2P-less) interface type of the original sdata (sdata->vif.type) |
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* @vif_addr: interface address |
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* @rfc1042_hdr: copy of the RFC 1042 SNAP header (to have in cache) |
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* @control_port_protocol: control port protocol copied from sdata |
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* @expected_ds_bits: from/to DS bits expected |
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* @icv_len: length of the MIC if present |
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* @key: bool indicating encryption is expected (key is set) |
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* @internal_forward: forward froms internally on AP/VLAN type interfaces |
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* @uses_rss: copy of USES_RSS hw flag |
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* @da_offs: offset of the DA in the header (for header conversion) |
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* @sa_offs: offset of the SA in the header (for header conversion) |
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* @rcu_head: RCU head for freeing this structure |
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*/ |
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struct ieee80211_fast_rx { |
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struct net_device *dev; |
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enum nl80211_iftype vif_type; |
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u8 vif_addr[ETH_ALEN] __aligned(2); |
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u8 rfc1042_hdr[6] __aligned(2); |
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__be16 control_port_protocol; |
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__le16 expected_ds_bits; |
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u8 icv_len; |
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u8 key:1, |
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internal_forward:1, |
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uses_rss:1; |
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u8 da_offs, sa_offs; |
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struct rcu_head rcu_head; |
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}; |
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/* we use only values in the range 0-100, so pick a large precision */ |
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DECLARE_EWMA(mesh_fail_avg, 20, 8) |
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DECLARE_EWMA(mesh_tx_rate_avg, 8, 16) |
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/** |
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* struct mesh_sta - mesh STA information |
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* @plink_lock: serialize access to plink fields |
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* @llid: Local link ID |
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* @plid: Peer link ID |
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* @aid: local aid supplied by peer |
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* @reason: Cancel reason on PLINK_HOLDING state |
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* @plink_retries: Retries in establishment |
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* @plink_state: peer link state |
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* @plink_timeout: timeout of peer link |
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* @plink_timer: peer link watch timer |
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* @plink_sta: peer link watch timer's sta_info |
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* @t_offset: timing offset relative to this host |
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* @t_offset_setpoint: reference timing offset of this sta to be used when |
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* calculating clockdrift |
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* @local_pm: local link-specific power save mode |
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* @peer_pm: peer-specific power save mode towards local STA |
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* @nonpeer_pm: STA power save mode towards non-peer neighbors |
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* @processed_beacon: set to true after peer rates and capabilities are |
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* processed |
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* @connected_to_gate: true if mesh STA has a path to a mesh gate |
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* @connected_to_as: true if mesh STA has a path to a authentication server |
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* @fail_avg: moving percentage of failed MSDUs |
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* @tx_rate_avg: moving average of tx bitrate |
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*/ |
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struct mesh_sta { |
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struct timer_list plink_timer; |
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struct sta_info *plink_sta; |
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s64 t_offset; |
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s64 t_offset_setpoint; |
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spinlock_t plink_lock; |
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u16 llid; |
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u16 plid; |
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u16 aid; |
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u16 reason; |
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u8 plink_retries; |
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bool processed_beacon; |
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bool connected_to_gate; |
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bool connected_to_as; |
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enum nl80211_plink_state plink_state; |
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u32 plink_timeout; |
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/* mesh power save */ |
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enum nl80211_mesh_power_mode local_pm; |
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enum nl80211_mesh_power_mode peer_pm; |
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enum nl80211_mesh_power_mode nonpeer_pm; |
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|
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/* moving percentage of failed MSDUs */ |
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struct ewma_mesh_fail_avg fail_avg; |
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/* moving average of tx bitrate */ |
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struct ewma_mesh_tx_rate_avg tx_rate_avg; |
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}; |
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DECLARE_EWMA(signal, 10, 8) |
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struct ieee80211_sta_rx_stats { |
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unsigned long packets; |
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unsigned long last_rx; |
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unsigned long num_duplicates; |
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unsigned long fragments; |
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unsigned long dropped; |
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int last_signal; |
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u8 chains; |
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s8 chain_signal_last[IEEE80211_MAX_CHAINS]; |
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u32 last_rate; |
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struct u64_stats_sync syncp; |
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u64 bytes; |
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u64 msdu[IEEE80211_NUM_TIDS + 1]; |
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}; |
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|
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/* |
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* IEEE 802.11-2016 (10.6 "Defragmentation") recommends support for "concurrent |
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* reception of at least one MSDU per access category per associated STA" |
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* on APs, or "at least one MSDU per access category" on other interface types. |
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* |
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* This limit can be increased by changing this define, at the cost of slower |
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* frame reassembly and increased memory use while fragments are pending. |
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*/ |
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#define IEEE80211_FRAGMENT_MAX 4 |
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|
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struct ieee80211_fragment_entry { |
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struct sk_buff_head skb_list; |
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unsigned long first_frag_time; |
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u16 seq; |
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u16 extra_len; |
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u16 last_frag; |
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u8 rx_queue; |
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u8 check_sequential_pn:1, /* needed for CCMP/GCMP */ |
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is_protected:1; |
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u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ |
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unsigned int key_color; |
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}; |
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struct ieee80211_fragment_cache { |
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struct ieee80211_fragment_entry entries[IEEE80211_FRAGMENT_MAX]; |
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unsigned int next; |
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}; |
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|
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/* |
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* The bandwidth threshold below which the per-station CoDel parameters will be |
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* scaled to be more lenient (to prevent starvation of slow stations). This |
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* value will be scaled by the number of active stations when it is being |
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* applied. |
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*/ |
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#define STA_SLOW_THRESHOLD 6000 /* 6 Mbps */ |
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|
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/** |
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* struct sta_info - STA information |
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* |
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* This structure collects information about a station that |
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* mac80211 is communicating with. |
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* |
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* @list: global linked list entry |
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* @free_list: list entry for keeping track of stations to free |
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* @hash_node: hash node for rhashtable |
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* @addr: station's MAC address - duplicated from public part to |
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* let the hash table work with just a single cacheline |
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* @local: pointer to the global information |
|
* @sdata: virtual interface this station belongs to |
|
* @ptk: peer keys negotiated with this station, if any |
|
* @ptk_idx: last installed peer key index |
|
* @gtk: group keys negotiated with this station, if any |
|
* @rate_ctrl: rate control algorithm reference |
|
* @rate_ctrl_lock: spinlock used to protect rate control data |
|
* (data inside the algorithm, so serializes calls there) |
|
* @rate_ctrl_priv: rate control private per-STA pointer |
|
* @lock: used for locking all fields that require locking, see comments |
|
* in the header file. |
|
* @drv_deliver_wk: used for delivering frames after driver PS unblocking |
|
* @listen_interval: listen interval of this station, when we're acting as AP |
|
* @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly |
|
* @ps_lock: used for powersave (when mac80211 is the AP) related locking |
|
* @ps_tx_buf: buffers (per AC) of frames to transmit to this station |
|
* when it leaves power saving state or polls |
|
* @tx_filtered: buffers (per AC) of frames we already tried to |
|
* transmit but were filtered by hardware due to STA having |
|
* entered power saving state, these are also delivered to |
|
* the station when it leaves powersave or polls for frames |
|
* @driver_buffered_tids: bitmap of TIDs the driver has data buffered on |
|
* @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on |
|
* @assoc_at: clock boottime (in ns) of last association |
|
* @last_connected: time (in seconds) when a station got connected |
|
* @last_seq_ctrl: last received seq/frag number from this STA (per TID |
|
* plus one for non-QoS frames) |
|
* @tid_seq: per-TID sequence numbers for sending to this STA |
|
* @airtime: per-AC struct airtime_info describing airtime statistics for this |
|
* station |
|
* @ampdu_mlme: A-MPDU state machine state |
|
* @mesh: mesh STA information |
|
* @debugfs_dir: debug filesystem directory dentry |
|
* @dead: set to true when sta is unlinked |
|
* @removed: set to true when sta is being removed from sta_list |
|
* @uploaded: set to true when sta is uploaded to the driver |
|
* @sta: station information we share with the driver |
|
* @sta_state: duplicates information about station state (for debug) |
|
* @rcu_head: RCU head used for freeing this station struct |
|
* @cur_max_bandwidth: maximum bandwidth to use for TX to the station, |
|
* taken from HT/VHT capabilities or VHT operating mode notification |
|
* @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
|
* AP only. |
|
* @cipher_scheme: optional cipher scheme for this station |
|
* @cparams: CoDel parameters for this station. |
|
* @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED) |
|
* @fast_tx: TX fastpath information |
|
* @fast_rx: RX fastpath information |
|
* @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to |
|
* the BSS one. |
|
* @tx_stats: TX statistics |
|
* @tx_stats.packets: # of packets transmitted |
|
* @tx_stats.bytes: # of bytes in all packets transmitted |
|
* @tx_stats.last_rate: last TX rate |
|
* @tx_stats.msdu: # of transmitted MSDUs per TID |
|
* @rx_stats: RX statistics |
|
* @rx_stats_avg: averaged RX statistics |
|
* @rx_stats_avg.signal: averaged signal |
|
* @rx_stats_avg.chain_signal: averaged per-chain signal |
|
* @pcpu_rx_stats: per-CPU RX statistics, assigned only if the driver needs |
|
* this (by advertising the USES_RSS hw flag) |
|
* @status_stats: TX status statistics |
|
* @status_stats.filtered: # of filtered frames |
|
* @status_stats.retry_failed: # of frames that failed after retry |
|
* @status_stats.retry_count: # of retries attempted |
|
* @status_stats.lost_packets: # of lost packets |
|
* @status_stats.last_pkt_time: timestamp of last ACKed packet |
|
* @status_stats.msdu_retries: # of MSDU retries |
|
* @status_stats.msdu_failed: # of failed MSDUs |
|
* @status_stats.last_ack: last ack timestamp (jiffies) |
|
* @status_stats.last_ack_signal: last ACK signal |
|
* @status_stats.ack_signal_filled: last ACK signal validity |
|
* @status_stats.avg_ack_signal: average ACK signal |
|
* @frags: fragment cache |
|
*/ |
|
struct sta_info { |
|
/* General information, mostly static */ |
|
struct list_head list, free_list; |
|
struct rcu_head rcu_head; |
|
struct rhlist_head hash_node; |
|
u8 addr[ETH_ALEN]; |
|
struct ieee80211_local *local; |
|
struct ieee80211_sub_if_data *sdata; |
|
struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + |
|
NUM_DEFAULT_MGMT_KEYS + |
|
NUM_DEFAULT_BEACON_KEYS]; |
|
struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
|
u8 ptk_idx; |
|
struct rate_control_ref *rate_ctrl; |
|
void *rate_ctrl_priv; |
|
spinlock_t rate_ctrl_lock; |
|
spinlock_t lock; |
|
|
|
struct ieee80211_fast_tx __rcu *fast_tx; |
|
struct ieee80211_fast_rx __rcu *fast_rx; |
|
struct ieee80211_sta_rx_stats __percpu *pcpu_rx_stats; |
|
|
|
#ifdef CONFIG_MAC80211_MESH |
|
struct mesh_sta *mesh; |
|
#endif |
|
|
|
struct work_struct drv_deliver_wk; |
|
|
|
u16 listen_interval; |
|
|
|
bool dead; |
|
bool removed; |
|
|
|
bool uploaded; |
|
|
|
enum ieee80211_sta_state sta_state; |
|
|
|
/* use the accessors defined below */ |
|
unsigned long _flags; |
|
|
|
/* STA powersave lock and frame queues */ |
|
spinlock_t ps_lock; |
|
struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
|
struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; |
|
unsigned long driver_buffered_tids; |
|
unsigned long txq_buffered_tids; |
|
|
|
u64 assoc_at; |
|
long last_connected; |
|
|
|
/* Updated from RX path only, no locking requirements */ |
|
struct ieee80211_sta_rx_stats rx_stats; |
|
struct { |
|
struct ewma_signal signal; |
|
struct ewma_signal chain_signal[IEEE80211_MAX_CHAINS]; |
|
} rx_stats_avg; |
|
|
|
/* Plus 1 for non-QoS frames */ |
|
__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
|
|
|
/* Updated from TX status path only, no locking requirements */ |
|
struct { |
|
unsigned long filtered; |
|
unsigned long retry_failed, retry_count; |
|
unsigned int lost_packets; |
|
unsigned long last_pkt_time; |
|
u64 msdu_retries[IEEE80211_NUM_TIDS + 1]; |
|
u64 msdu_failed[IEEE80211_NUM_TIDS + 1]; |
|
unsigned long last_ack; |
|
s8 last_ack_signal; |
|
bool ack_signal_filled; |
|
struct ewma_avg_signal avg_ack_signal; |
|
} status_stats; |
|
|
|
/* Updated from TX path only, no locking requirements */ |
|
struct { |
|
u64 packets[IEEE80211_NUM_ACS]; |
|
u64 bytes[IEEE80211_NUM_ACS]; |
|
struct ieee80211_tx_rate last_rate; |
|
struct rate_info last_rate_info; |
|
u64 msdu[IEEE80211_NUM_TIDS + 1]; |
|
} tx_stats; |
|
u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
|
|
|
struct airtime_info airtime[IEEE80211_NUM_ACS]; |
|
|
|
/* |
|
* Aggregation information, locked with lock. |
|
*/ |
|
struct sta_ampdu_mlme ampdu_mlme; |
|
|
|
#ifdef CONFIG_MAC80211_DEBUGFS |
|
struct dentry *debugfs_dir; |
|
#endif |
|
|
|
enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
|
|
|
enum ieee80211_smps_mode known_smps_mode; |
|
const struct ieee80211_cipher_scheme *cipher_scheme; |
|
|
|
struct codel_params cparams; |
|
|
|
u8 reserved_tid; |
|
|
|
struct cfg80211_chan_def tdls_chandef; |
|
|
|
struct ieee80211_fragment_cache frags; |
|
|
|
/* keep last! */ |
|
struct ieee80211_sta sta; |
|
}; |
|
|
|
static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta) |
|
{ |
|
#ifdef CONFIG_MAC80211_MESH |
|
return sta->mesh->plink_state; |
|
#endif |
|
return NL80211_PLINK_LISTEN; |
|
} |
|
|
|
static inline void set_sta_flag(struct sta_info *sta, |
|
enum ieee80211_sta_info_flags flag) |
|
{ |
|
WARN_ON(flag == WLAN_STA_AUTH || |
|
flag == WLAN_STA_ASSOC || |
|
flag == WLAN_STA_AUTHORIZED); |
|
set_bit(flag, &sta->_flags); |
|
} |
|
|
|
static inline void clear_sta_flag(struct sta_info *sta, |
|
enum ieee80211_sta_info_flags flag) |
|
{ |
|
WARN_ON(flag == WLAN_STA_AUTH || |
|
flag == WLAN_STA_ASSOC || |
|
flag == WLAN_STA_AUTHORIZED); |
|
clear_bit(flag, &sta->_flags); |
|
} |
|
|
|
static inline int test_sta_flag(struct sta_info *sta, |
|
enum ieee80211_sta_info_flags flag) |
|
{ |
|
return test_bit(flag, &sta->_flags); |
|
} |
|
|
|
static inline int test_and_clear_sta_flag(struct sta_info *sta, |
|
enum ieee80211_sta_info_flags flag) |
|
{ |
|
WARN_ON(flag == WLAN_STA_AUTH || |
|
flag == WLAN_STA_ASSOC || |
|
flag == WLAN_STA_AUTHORIZED); |
|
return test_and_clear_bit(flag, &sta->_flags); |
|
} |
|
|
|
static inline int test_and_set_sta_flag(struct sta_info *sta, |
|
enum ieee80211_sta_info_flags flag) |
|
{ |
|
WARN_ON(flag == WLAN_STA_AUTH || |
|
flag == WLAN_STA_ASSOC || |
|
flag == WLAN_STA_AUTHORIZED); |
|
return test_and_set_bit(flag, &sta->_flags); |
|
} |
|
|
|
int sta_info_move_state(struct sta_info *sta, |
|
enum ieee80211_sta_state new_state); |
|
|
|
static inline void sta_info_pre_move_state(struct sta_info *sta, |
|
enum ieee80211_sta_state new_state) |
|
{ |
|
int ret; |
|
|
|
WARN_ON_ONCE(test_sta_flag(sta, WLAN_STA_INSERTED)); |
|
|
|
ret = sta_info_move_state(sta, new_state); |
|
WARN_ON_ONCE(ret); |
|
} |
|
|
|
|
|
void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, |
|
struct tid_ampdu_tx *tid_tx); |
|
|
|
static inline struct tid_ampdu_tx * |
|
rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid) |
|
{ |
|
return rcu_dereference_protected(sta->ampdu_mlme.tid_tx[tid], |
|
lockdep_is_held(&sta->lock) || |
|
lockdep_is_held(&sta->ampdu_mlme.mtx)); |
|
} |
|
|
|
/* Maximum number of frames to buffer per power saving station per AC */ |
|
#define STA_MAX_TX_BUFFER 64 |
|
|
|
/* Minimum buffered frame expiry time. If STA uses listen interval that is |
|
* smaller than this value, the minimum value here is used instead. */ |
|
#define STA_TX_BUFFER_EXPIRE (10 * HZ) |
|
|
|
/* How often station data is cleaned up (e.g., expiration of buffered frames) |
|
*/ |
|
#define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
|
|
|
struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local, |
|
const u8 *addr); |
|
|
|
/* |
|
* Get a STA info, must be under RCU read lock. |
|
*/ |
|
struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr); |
|
|
|
struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr); |
|
|
|
/* user must hold sta_mtx or be in RCU critical section */ |
|
struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local, |
|
const u8 *sta_addr, const u8 *vif_addr); |
|
|
|
#define for_each_sta_info(local, _addr, _sta, _tmp) \ |
|
rhl_for_each_entry_rcu(_sta, _tmp, \ |
|
sta_info_hash_lookup(local, _addr), hash_node) |
|
|
|
/* |
|
* Get STA info by index, BROKEN! |
|
*/ |
|
struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata, |
|
int idx); |
|
/* |
|
* Create a new STA info, caller owns returned structure |
|
* until sta_info_insert(). |
|
*/ |
|
struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr, gfp_t gfp); |
|
|
|
void sta_info_free(struct ieee80211_local *local, struct sta_info *sta); |
|
|
|
/* |
|
* Insert STA info into hash table/list, returns zero or a |
|
* -EEXIST if (if the same MAC address is already present). |
|
* |
|
* Calling the non-rcu version makes the caller relinquish, |
|
* the _rcu version calls read_lock_rcu() and must be called |
|
* without it held. |
|
*/ |
|
int sta_info_insert(struct sta_info *sta); |
|
int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU); |
|
|
|
int __must_check __sta_info_destroy(struct sta_info *sta); |
|
int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr); |
|
int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata, |
|
const u8 *addr); |
|
|
|
void sta_info_recalc_tim(struct sta_info *sta); |
|
|
|
int sta_info_init(struct ieee80211_local *local); |
|
void sta_info_stop(struct ieee80211_local *local); |
|
|
|
/** |
|
* __sta_info_flush - flush matching STA entries from the STA table |
|
* |
|
* Returns the number of removed STA entries. |
|
* |
|
* @sdata: sdata to remove all stations from |
|
* @vlans: if the given interface is an AP interface, also flush VLANs |
|
*/ |
|
int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans); |
|
|
|
/** |
|
* sta_info_flush - flush matching STA entries from the STA table |
|
* |
|
* Returns the number of removed STA entries. |
|
* |
|
* @sdata: sdata to remove all stations from |
|
*/ |
|
static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata) |
|
{ |
|
return __sta_info_flush(sdata, false); |
|
} |
|
|
|
void sta_set_rate_info_tx(struct sta_info *sta, |
|
const struct ieee80211_tx_rate *rate, |
|
struct rate_info *rinfo); |
|
void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo, |
|
bool tidstats); |
|
|
|
u32 sta_get_expected_throughput(struct sta_info *sta); |
|
|
|
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, |
|
unsigned long exp_time); |
|
u8 sta_info_tx_streams(struct sta_info *sta); |
|
|
|
void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta); |
|
void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta); |
|
void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta); |
|
|
|
unsigned long ieee80211_sta_last_active(struct sta_info *sta); |
|
|
|
enum sta_stats_type { |
|
STA_STATS_RATE_TYPE_INVALID = 0, |
|
STA_STATS_RATE_TYPE_LEGACY, |
|
STA_STATS_RATE_TYPE_HT, |
|
STA_STATS_RATE_TYPE_VHT, |
|
STA_STATS_RATE_TYPE_HE, |
|
STA_STATS_RATE_TYPE_S1G, |
|
}; |
|
|
|
#define STA_STATS_FIELD_HT_MCS GENMASK( 7, 0) |
|
#define STA_STATS_FIELD_LEGACY_IDX GENMASK( 3, 0) |
|
#define STA_STATS_FIELD_LEGACY_BAND GENMASK( 7, 4) |
|
#define STA_STATS_FIELD_VHT_MCS GENMASK( 3, 0) |
|
#define STA_STATS_FIELD_VHT_NSS GENMASK( 7, 4) |
|
#define STA_STATS_FIELD_HE_MCS GENMASK( 3, 0) |
|
#define STA_STATS_FIELD_HE_NSS GENMASK( 7, 4) |
|
#define STA_STATS_FIELD_BW GENMASK(11, 8) |
|
#define STA_STATS_FIELD_SGI GENMASK(12, 12) |
|
#define STA_STATS_FIELD_TYPE GENMASK(15, 13) |
|
#define STA_STATS_FIELD_HE_RU GENMASK(18, 16) |
|
#define STA_STATS_FIELD_HE_GI GENMASK(20, 19) |
|
#define STA_STATS_FIELD_HE_DCM GENMASK(21, 21) |
|
|
|
#define STA_STATS_FIELD(_n, _v) FIELD_PREP(STA_STATS_FIELD_ ## _n, _v) |
|
#define STA_STATS_GET(_n, _v) FIELD_GET(STA_STATS_FIELD_ ## _n, _v) |
|
|
|
#define STA_STATS_RATE_INVALID 0 |
|
|
|
static inline u32 sta_stats_encode_rate(struct ieee80211_rx_status *s) |
|
{ |
|
u32 r; |
|
|
|
r = STA_STATS_FIELD(BW, s->bw); |
|
|
|
if (s->enc_flags & RX_ENC_FLAG_SHORT_GI) |
|
r |= STA_STATS_FIELD(SGI, 1); |
|
|
|
switch (s->encoding) { |
|
case RX_ENC_VHT: |
|
r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_VHT); |
|
r |= STA_STATS_FIELD(VHT_NSS, s->nss); |
|
r |= STA_STATS_FIELD(VHT_MCS, s->rate_idx); |
|
break; |
|
case RX_ENC_HT: |
|
r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HT); |
|
r |= STA_STATS_FIELD(HT_MCS, s->rate_idx); |
|
break; |
|
case RX_ENC_LEGACY: |
|
r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_LEGACY); |
|
r |= STA_STATS_FIELD(LEGACY_BAND, s->band); |
|
r |= STA_STATS_FIELD(LEGACY_IDX, s->rate_idx); |
|
break; |
|
case RX_ENC_HE: |
|
r |= STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_HE); |
|
r |= STA_STATS_FIELD(HE_NSS, s->nss); |
|
r |= STA_STATS_FIELD(HE_MCS, s->rate_idx); |
|
r |= STA_STATS_FIELD(HE_GI, s->he_gi); |
|
r |= STA_STATS_FIELD(HE_RU, s->he_ru); |
|
r |= STA_STATS_FIELD(HE_DCM, s->he_dcm); |
|
break; |
|
default: |
|
WARN_ON(1); |
|
return STA_STATS_RATE_INVALID; |
|
} |
|
|
|
return r; |
|
} |
|
|
|
#endif /* STA_INFO_H */
|
|
|