| /* |
| * Copyright 2002-2005, Devicescape Software, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef STA_INFO_H |
| #define STA_INFO_H |
| |
| #include <linux/list.h> |
| #include <linux/types.h> |
| #include <linux/if_ether.h> |
| #include <linux/workqueue.h> |
| #include <linux/average.h> |
| #include <linux/etherdevice.h> |
| #include "key.h" |
| |
| /** |
| * enum ieee80211_sta_info_flags - Stations flags |
| * |
| * These flags are used with &struct sta_info's @flags member, but |
| * only indirectly with set_sta_flag() and friends. |
| * |
| * @WLAN_STA_AUTH: Station is authenticated. |
| * @WLAN_STA_ASSOC: Station is associated. |
| * @WLAN_STA_PS_STA: Station is in power-save mode |
| * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. |
| * This bit is always checked so needs to be enabled for all stations |
| * when virtual port control is not in use. |
| * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble |
| * frames. |
| * @WLAN_STA_WME: Station is a QoS-STA. |
| * @WLAN_STA_WDS: Station is one of our WDS peers. |
| * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the |
| * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next |
| * frame to this station is transmitted. |
| * @WLAN_STA_MFP: Management frame protection is used with this STA. |
| * @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX) |
| * during suspend/resume and station removal. |
| * @WLAN_STA_PS_DRIVER: driver requires keeping this station in |
| * power-save mode logically to flush frames that might still |
| * be in the queues |
| * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping |
| * station in power-save mode, reply when the driver unblocks. |
| * @WLAN_STA_TDLS_PEER: Station is a TDLS peer. |
| * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct |
| * packets. This means the link is enabled. |
| * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was |
| * keeping station in power-save mode, reply when the driver |
| * unblocks the station. |
| * @WLAN_STA_SP: Station is in a service period, so don't try to |
| * reply to other uAPSD trigger frames or PS-Poll. |
| * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame. |
| * @WLAN_STA_INSERTED: This station is inserted into the hash table. |
| * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station. |
| * @WLAN_STA_TOFFSET_KNOWN: toffset calculated for this station is valid. |
| * @WLAN_STA_MPSP_OWNER: local STA is owner of a mesh Peer Service Period. |
| * @WLAN_STA_MPSP_RECIPIENT: local STA is recipient of a MPSP. |
| */ |
| enum ieee80211_sta_info_flags { |
| WLAN_STA_AUTH, |
| WLAN_STA_ASSOC, |
| WLAN_STA_PS_STA, |
| WLAN_STA_AUTHORIZED, |
| WLAN_STA_SHORT_PREAMBLE, |
| WLAN_STA_WME, |
| WLAN_STA_WDS, |
| WLAN_STA_CLEAR_PS_FILT, |
| WLAN_STA_MFP, |
| WLAN_STA_BLOCK_BA, |
| WLAN_STA_PS_DRIVER, |
| WLAN_STA_PSPOLL, |
| WLAN_STA_TDLS_PEER, |
| WLAN_STA_TDLS_PEER_AUTH, |
| WLAN_STA_UAPSD, |
| WLAN_STA_SP, |
| WLAN_STA_4ADDR_EVENT, |
| WLAN_STA_INSERTED, |
| WLAN_STA_RATE_CONTROL, |
| WLAN_STA_TOFFSET_KNOWN, |
| WLAN_STA_MPSP_OWNER, |
| WLAN_STA_MPSP_RECIPIENT, |
| }; |
| |
| #define ADDBA_RESP_INTERVAL HZ |
| #define HT_AGG_MAX_RETRIES 15 |
| #define HT_AGG_BURST_RETRIES 3 |
| #define HT_AGG_RETRIES_PERIOD (15 * HZ) |
| |
| #define HT_AGG_STATE_DRV_READY 0 |
| #define HT_AGG_STATE_RESPONSE_RECEIVED 1 |
| #define HT_AGG_STATE_OPERATIONAL 2 |
| #define HT_AGG_STATE_STOPPING 3 |
| #define HT_AGG_STATE_WANT_START 4 |
| #define HT_AGG_STATE_WANT_STOP 5 |
| |
| enum ieee80211_agg_stop_reason { |
| AGG_STOP_DECLINED, |
| AGG_STOP_LOCAL_REQUEST, |
| AGG_STOP_PEER_REQUEST, |
| AGG_STOP_DESTROY_STA, |
| }; |
| |
| /** |
| * struct tid_ampdu_tx - TID aggregation information (Tx). |
| * |
| * @rcu_head: rcu head for freeing structure |
| * @session_timer: check if we keep Tx-ing on the TID (by timeout value) |
| * @addba_resp_timer: timer for peer's response to addba request |
| * @pending: pending frames queue -- use sta's spinlock to protect |
| * @dialog_token: dialog token for aggregation session |
| * @timeout: session timeout value to be filled in ADDBA requests |
| * @state: session state (see above) |
| * @last_tx: jiffies of last tx activity |
| * @stop_initiator: initiator of a session stop |
| * @tx_stop: TX DelBA frame when stopping |
| * @buf_size: reorder buffer size at receiver |
| * @failed_bar_ssn: ssn of the last failed BAR tx attempt |
| * @bar_pending: BAR needs to be re-sent |
| * |
| * This structure's lifetime is managed by RCU, assignments to |
| * the array holding it must hold the aggregation mutex. |
| * |
| * The TX path can access it under RCU lock-free if, and |
| * only if, the state has the flag %HT_AGG_STATE_OPERATIONAL |
| * set. Otherwise, the TX path must also acquire the spinlock |
| * and re-check the state, see comments in the tx code |
| * touching it. |
| */ |
| struct tid_ampdu_tx { |
| struct rcu_head rcu_head; |
| struct timer_list session_timer; |
| struct timer_list addba_resp_timer; |
| struct sk_buff_head pending; |
| unsigned long state; |
| unsigned long last_tx; |
| u16 timeout; |
| u8 dialog_token; |
| u8 stop_initiator; |
| bool tx_stop; |
| u8 buf_size; |
| |
| u16 failed_bar_ssn; |
| bool bar_pending; |
| }; |
| |
| /** |
| * struct tid_ampdu_rx - TID aggregation information (Rx). |
| * |
| * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
| * @reorder_time: jiffies when skb was added |
| * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
| * @reorder_timer: releases expired frames from the reorder buffer. |
| * @last_rx: jiffies of last rx activity |
| * @head_seq_num: head sequence number in reordering buffer. |
| * @stored_mpdu_num: number of MPDUs in reordering buffer |
| * @ssn: Starting Sequence Number expected to be aggregated. |
| * @buf_size: buffer size for incoming A-MPDUs |
| * @timeout: reset timer value (in TUs). |
| * @dialog_token: dialog token for aggregation session |
| * @rcu_head: RCU head used for freeing this struct |
| * @reorder_lock: serializes access to reorder buffer, see below. |
| * |
| * This structure's lifetime is managed by RCU, assignments to |
| * the array holding it must hold the aggregation mutex. |
| * |
| * The @reorder_lock is used to protect the members of this |
| * struct, except for @timeout, @buf_size and @dialog_token, |
| * which are constant across the lifetime of the struct (the |
| * dialog token being used only for debugging). |
| */ |
| struct tid_ampdu_rx { |
| struct rcu_head rcu_head; |
| spinlock_t reorder_lock; |
| struct sk_buff **reorder_buf; |
| unsigned long *reorder_time; |
| struct timer_list session_timer; |
| struct timer_list reorder_timer; |
| unsigned long last_rx; |
| u16 head_seq_num; |
| u16 stored_mpdu_num; |
| u16 ssn; |
| u16 buf_size; |
| u16 timeout; |
| u8 dialog_token; |
| }; |
| |
| /** |
| * struct sta_ampdu_mlme - STA aggregation information. |
| * |
| * @tid_rx: aggregation info for Rx per TID -- RCU protected |
| * @tid_tx: aggregation info for Tx per TID |
| * @tid_start_tx: sessions where start was requested |
| * @addba_req_num: number of times addBA request has been sent. |
| * @last_addba_req_time: timestamp of the last addBA request. |
| * @dialog_token_allocator: dialog token enumerator for each new session; |
| * @work: work struct for starting/stopping aggregation |
| * @tid_rx_timer_expired: bitmap indicating on which TIDs the |
| * RX timer expired until the work for it runs |
| * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the |
| * driver requested to close until the work for it runs |
| * @mtx: mutex to protect all TX data (except non-NULL assignments |
| * to tid_tx[idx], which are protected by the sta spinlock) |
| * tid_start_tx is also protected by sta->lock. |
| */ |
| struct sta_ampdu_mlme { |
| struct mutex mtx; |
| /* rx */ |
| struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; |
| unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
| unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |
| /* tx */ |
| struct work_struct work; |
| struct tid_ampdu_tx __rcu *tid_tx[IEEE80211_NUM_TIDS]; |
| struct tid_ampdu_tx *tid_start_tx[IEEE80211_NUM_TIDS]; |
| unsigned long last_addba_req_time[IEEE80211_NUM_TIDS]; |
| u8 addba_req_num[IEEE80211_NUM_TIDS]; |
| u8 dialog_token_allocator; |
| }; |
| |
| |
| /** |
| * struct sta_info - STA information |
| * |
| * This structure collects information about a station that |
| * mac80211 is communicating with. |
| * |
| * @list: global linked list entry |
| * @hnext: hash table linked list pointer |
| * @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 |
| * @gtk_idx: last installed group key index |
| * @rate_ctrl: rate control algorithm reference |
| * @rate_ctrl_priv: rate control private per-STA pointer |
| * @last_tx_rate: rate used for last transmit, to report to userspace as |
| * "the" transmit rate |
| * @last_rx_rate_idx: rx status rate index of the last data packet |
| * @last_rx_rate_flag: rx status flag of the last data packet |
| * @last_rx_rate_vht_nss: rx status nss of last data packet |
| * @lock: used for locking all fields that require locking, see comments |
| * in the header file. |
| * @drv_unblock_wk: used for 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_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 |
| * @rx_packets: Number of MSDUs received from this STA |
| * @rx_bytes: Number of bytes received from this STA |
| * @wep_weak_iv_count: number of weak WEP IVs received from this station |
| * @last_rx: time (in jiffies) when last frame was received from this STA |
| * @last_connected: time (in seconds) when a station got connected |
| * @num_duplicates: number of duplicate frames received from this STA |
| * @rx_fragments: number of received MPDUs |
| * @rx_dropped: number of dropped MPDUs from this STA |
| * @last_signal: signal of last received frame from this STA |
| * @avg_signal: moving average of signal of received frames from this STA |
| * @last_ack_signal: signal of last received Ack frame from this STA |
| * @last_seq_ctrl: last received seq/frag number from this STA (per RX queue) |
| * @tx_filtered_count: number of frames the hardware filtered for this STA |
| * @tx_retry_failed: number of frames that failed retry |
| * @tx_retry_count: total number of retries for frames to this STA |
| * @fail_avg: moving percentage of failed MSDUs |
| * @tx_packets: number of RX/TX MSDUs |
| * @tx_bytes: number of bytes transmitted to this STA |
| * @tx_fragments: number of transmitted MPDUs |
| * @tid_seq: per-TID sequence numbers for sending to this STA |
| * @ampdu_mlme: A-MPDU state machine state |
| * @timer_to_tid: identity mapping to ID timers |
| * @llid: Local link ID |
| * @plid: Peer link ID |
| * @reason: Cancel reason on PLINK_HOLDING state |
| * @plink_retries: Retries in establishment |
| * @ignore_plink_timer: ignore the peer-link timer (used internally) |
| * @plink_state: peer link state |
| * @plink_timeout: timeout of peer link |
| * @plink_timer: peer link watch timer |
| * @t_offset: timing offset relative to this host |
| * @t_offset_setpoint: reference timing offset of this sta to be used when |
| * calculating clockdrift |
| * @local_pm: local link-specific power save mode |
| * @peer_pm: peer-specific power save mode towards local STA |
| * @nonpeer_pm: STA power save mode towards non-peer neighbors |
| * @debugfs: debug filesystem info |
| * @dead: set to true when sta is unlinked |
| * @uploaded: set to true when sta is uploaded to the driver |
| * @lost_packets: number of consecutive lost packets |
| * @sta: station information we share with the driver |
| * @sta_state: duplicates information about station state (for debug) |
| * @beacon_loss_count: number of times beacon loss has triggered |
| * @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 |
| * @chains: chains ever used for RX from this station |
| * @chain_signal_last: last signal (per chain) |
| * @chain_signal_avg: signal average (per chain) |
| * @known_smps_mode: the smps_mode the client thinks we are in. Relevant for |
| * AP only. |
| * @cipher_scheme: optional cipher scheme for this station |
| */ |
| struct sta_info { |
| /* General information, mostly static */ |
| struct list_head list; |
| struct rcu_head rcu_head; |
| struct sta_info __rcu *hnext; |
| struct ieee80211_local *local; |
| struct ieee80211_sub_if_data *sdata; |
| struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
| struct ieee80211_key __rcu *ptk[NUM_DEFAULT_KEYS]; |
| u8 gtk_idx; |
| u8 ptk_idx; |
| struct rate_control_ref *rate_ctrl; |
| void *rate_ctrl_priv; |
| spinlock_t lock; |
| |
| struct work_struct drv_unblock_wk; |
| |
| u16 listen_interval; |
| |
| bool dead; |
| |
| bool uploaded; |
| |
| enum ieee80211_sta_state sta_state; |
| |
| /* use the accessors defined below */ |
| unsigned long _flags; |
| |
| /* |
| * STA powersave frame queues, no more than the internal |
| * locking required. |
| */ |
| struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS]; |
| struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS]; |
| unsigned long driver_buffered_tids; |
| |
| /* Updated from RX path only, no locking requirements */ |
| unsigned long rx_packets; |
| u64 rx_bytes; |
| unsigned long wep_weak_iv_count; |
| unsigned long last_rx; |
| long last_connected; |
| unsigned long num_duplicates; |
| unsigned long rx_fragments; |
| unsigned long rx_dropped; |
| int last_signal; |
| struct ewma avg_signal; |
| int last_ack_signal; |
| |
| u8 chains; |
| s8 chain_signal_last[IEEE80211_MAX_CHAINS]; |
| struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS]; |
| |
| /* Plus 1 for non-QoS frames */ |
| __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1]; |
| |
| /* Updated from TX status path only, no locking requirements */ |
| unsigned long tx_filtered_count; |
| unsigned long tx_retry_failed, tx_retry_count; |
| /* moving percentage of failed MSDUs */ |
| unsigned int fail_avg; |
| |
| /* Updated from TX path only, no locking requirements */ |
| u32 tx_fragments; |
| u64 tx_packets[IEEE80211_NUM_ACS]; |
| u64 tx_bytes[IEEE80211_NUM_ACS]; |
| struct ieee80211_tx_rate last_tx_rate; |
| int last_rx_rate_idx; |
| u32 last_rx_rate_flag; |
| u8 last_rx_rate_vht_nss; |
| u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1]; |
| |
| /* |
| * Aggregation information, locked with lock. |
| */ |
| struct sta_ampdu_mlme ampdu_mlme; |
| u8 timer_to_tid[IEEE80211_NUM_TIDS]; |
| |
| #ifdef CONFIG_MAC80211_MESH |
| /* |
| * Mesh peer link attributes |
| * TODO: move to a sub-structure that is referenced with pointer? |
| */ |
| __le16 llid; |
| __le16 plid; |
| __le16 reason; |
| u8 plink_retries; |
| bool ignore_plink_timer; |
| enum nl80211_plink_state plink_state; |
| u32 plink_timeout; |
| struct timer_list plink_timer; |
| s64 t_offset; |
| s64 t_offset_setpoint; |
| /* mesh power save */ |
| enum nl80211_mesh_power_mode local_pm; |
| enum nl80211_mesh_power_mode peer_pm; |
| enum nl80211_mesh_power_mode nonpeer_pm; |
| #endif |
| |
| #ifdef CONFIG_MAC80211_DEBUGFS |
| struct sta_info_debugfsdentries { |
| struct dentry *dir; |
| bool add_has_run; |
| } debugfs; |
| #endif |
| |
| enum ieee80211_sta_rx_bandwidth cur_max_bandwidth; |
| |
| unsigned int lost_packets; |
| unsigned int beacon_loss_count; |
| |
| enum ieee80211_smps_mode known_smps_mode; |
| const struct ieee80211_cipher_scheme *cipher_scheme; |
| |
| /* 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->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)); |
| } |
| |
| #define STA_HASH_SIZE 256 |
| #define STA_HASH(sta) (sta[5]) |
| |
| |
| /* 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) |
| |
| /* |
| * 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); |
| |
| static inline |
| void for_each_sta_info_type_check(struct ieee80211_local *local, |
| const u8 *addr, |
| struct sta_info *sta, |
| struct sta_info *nxt) |
| { |
| } |
| |
| #define for_each_sta_info(local, _addr, _sta, nxt) \ |
| for ( /* initialise loop */ \ |
| _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\ |
| nxt = _sta ? rcu_dereference(_sta->hnext) : NULL; \ |
| /* typecheck */ \ |
| for_each_sta_info_type_check(local, (_addr), _sta, nxt),\ |
| /* continue condition */ \ |
| _sta; \ |
| /* advance loop */ \ |
| _sta = nxt, \ |
| nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \ |
| ) \ |
| /* compare address and run code only if it matches */ \ |
| if (ether_addr_equal(_sta->sta.addr, (_addr))) |
| |
| /* |
| * 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); |
| |
| void sta_info_init(struct ieee80211_local *local); |
| void sta_info_stop(struct ieee80211_local *local); |
| int sta_info_flush_defer(struct ieee80211_sub_if_data *sdata); |
| |
| /** |
| * sta_info_flush_cleanup - flush the sta_info cleanup queue |
| * @sdata: the interface |
| * |
| * Flushes the sta_info cleanup queue for a given interface; |
| * this is necessary before the interface is removed or, for |
| * AP/mesh interfaces, before it is deconfigured. |
| * |
| * Note an rcu_barrier() must precede the function, after all |
| * stations have been flushed/removed to ensure the call_rcu() |
| * calls that add stations to the cleanup queue have completed. |
| */ |
| void sta_info_flush_cleanup(struct ieee80211_sub_if_data *sdata); |
| |
| /** |
| * 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) |
| { |
| int ret = sta_info_flush_defer(sdata); |
| |
| rcu_barrier(); |
| sta_info_flush_cleanup(sdata); |
| |
| return ret; |
| } |
| |
| void sta_set_rate_info_tx(struct sta_info *sta, |
| const struct ieee80211_tx_rate *rate, |
| struct rate_info *rinfo); |
| void sta_set_rate_info_rx(struct sta_info *sta, |
| struct rate_info *rinfo); |
| 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); |
| |
| void ieee80211_cleanup_sdata_stas(struct ieee80211_sub_if_data *sdata); |
| |
| #endif /* STA_INFO_H */ |