/* * 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 #include #include #include #include "ieee80211_key.h" /** * enum ieee80211_sta_info_flags - Stations flags * * These flags are used with &struct sta_info's @flags member. * * @WLAN_STA_AUTH: Station is authenticated. * @WLAN_STA_ASSOC: Station is associated. * @WLAN_STA_PS: Station is in power-save mode * @WLAN_STA_TIM: TIM bit is on for this PS station (traffic buffered) * @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_ASSOC_AP: We're associated to that station, it is an AP. * @WLAN_STA_WME: Station is a QoS-STA. * @WLAN_STA_WDS: Station is one of our WDS peers. */ enum ieee80211_sta_info_flags { WLAN_STA_AUTH = 1<<0, WLAN_STA_ASSOC = 1<<1, WLAN_STA_PS = 1<<2, WLAN_STA_TIM = 1<<3, WLAN_STA_AUTHORIZED = 1<<4, WLAN_STA_SHORT_PREAMBLE = 1<<5, WLAN_STA_ASSOC_AP = 1<<6, WLAN_STA_WME = 1<<7, WLAN_STA_WDS = 1<<8, }; #define STA_TID_NUM 16 #define ADDBA_RESP_INTERVAL HZ #define HT_AGG_MAX_RETRIES (0x3) #define HT_AGG_STATE_INITIATOR_SHIFT (4) #define HT_ADDBA_REQUESTED_MSK BIT(0) #define HT_ADDBA_DRV_READY_MSK BIT(1) #define HT_ADDBA_RECEIVED_MSK BIT(2) #define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3) #define HT_AGG_STATE_INITIATOR_MSK BIT(HT_AGG_STATE_INITIATOR_SHIFT) #define HT_AGG_STATE_IDLE (0x0) #define HT_AGG_STATE_OPERATIONAL (HT_ADDBA_REQUESTED_MSK | \ HT_ADDBA_DRV_READY_MSK | \ HT_ADDBA_RECEIVED_MSK) /** * struct tid_ampdu_tx - TID aggregation information (Tx). * * @state: TID's state in session state machine. * @dialog_token: dialog token for aggregation session * @ssn: Starting Sequence Number expected to be aggregated. * @addba_resp_timer: timer for peer's response to addba request * @addba_req_num: number of times addBA request has been sent. */ struct tid_ampdu_tx { u8 state; u8 dialog_token; u16 ssn; struct timer_list addba_resp_timer; u8 addba_req_num; }; /** * struct tid_ampdu_rx - TID aggregation information (Rx). * * @state: TID's state in session state machine. * @dialog_token: dialog token for aggregation session * @ssn: Starting Sequence Number expected to be aggregated. * @buf_size: buffer size for incoming A-MPDUs * @timeout: reset timer value. * @head_seq_num: head sequence number in reordering buffer. * @stored_mpdu_num: number of MPDUs in reordering buffer * @reorder_buf: buffer to reorder incoming aggregated MPDUs * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) */ struct tid_ampdu_rx { u8 state; u8 dialog_token; u16 ssn; u16 buf_size; u16 timeout; u16 head_seq_num; u16 stored_mpdu_num; struct sk_buff **reorder_buf; struct timer_list session_timer; }; /** * struct sta_ampdu_mlme - STA aggregation information. * * @tid_rx: aggregation info for Rx per TID * @tid_tx: aggregation info for Tx per TID * @ampdu_rx: for locking sections in aggregation Rx flow * @ampdu_tx: for locking sectionsi in aggregation Tx flow * @dialog_token_allocator: dialog token enumerator for each new session; */ struct sta_ampdu_mlme { struct tid_ampdu_rx tid_rx[STA_TID_NUM]; struct tid_ampdu_tx tid_tx[STA_TID_NUM]; spinlock_t ampdu_rx; spinlock_t ampdu_tx; u8 dialog_token_allocator; }; struct sta_info { struct kref kref; struct list_head list; struct sta_info *hnext; /* next entry in hash table list */ struct ieee80211_local *local; u8 addr[ETH_ALEN]; u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */ u32 flags; /* WLAN_STA_ */ struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in * power saving state */ int pspoll; /* whether STA has send a PS Poll frame */ struct sk_buff_head tx_filtered; /* buffer of TX frames that were * already given to low-level driver, * but were filtered */ int clear_dst_mask; unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */ unsigned long rx_bytes, tx_bytes; unsigned long tx_retry_failed, tx_retry_count; unsigned long tx_filtered_count; unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */ unsigned long last_rx; /* bitmap of supported rates per band */ u64 supp_rates[IEEE80211_NUM_BANDS]; int txrate_idx; /* last rates used to send a frame to this STA */ int last_txrate_idx, last_nonerp_txrate_idx; struct net_device *dev; /* which net device is this station associated * to */ struct ieee80211_key *key; u32 tx_num_consecutive_failures; u32 tx_num_mpdu_ok; u32 tx_num_mpdu_fail; struct rate_control_ref *rate_ctrl; void *rate_ctrl_priv; /* last received seq/frag number from this STA (per RX queue) */ __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; unsigned long num_duplicates; /* number of duplicate frames received * from this STA */ unsigned long tx_fragments; /* number of transmitted MPDUs */ unsigned long rx_fragments; /* number of received MPDUs */ unsigned long rx_dropped; /* number of dropped MPDUs from this STA */ int last_rssi; /* RSSI of last received frame from this STA */ int last_signal; /* signal of last received frame from this STA */ int last_noise; /* noise of last received frame from this STA */ int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */ unsigned long last_ack; int channel_use; int channel_use_raw; #ifdef CONFIG_MAC80211_DEBUG_COUNTERS unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ u16 listen_interval; struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities of this STA */ struct sta_ampdu_mlme ampdu_mlme; u8 timer_to_tid[STA_TID_NUM]; /* convert timer id to tid */ u8 tid_to_tx_q[STA_TID_NUM]; /* map tid to tx queue */ #ifdef CONFIG_MAC80211_DEBUGFS struct sta_info_debugfsdentries { struct dentry *dir; struct dentry *flags; struct dentry *num_ps_buf_frames; struct dentry *last_ack_rssi; struct dentry *last_ack_ms; struct dentry *inactive_ms; struct dentry *last_seq_ctrl; #ifdef CONFIG_MAC80211_DEBUG_COUNTERS struct dentry *wme_rx_queue; struct dentry *wme_tx_queue; #endif struct dentry *agg_status; } debugfs; #endif }; /* Maximum number of concurrently registered stations */ #define MAX_STA_COUNT 2007 #define STA_HASH_SIZE 256 #define STA_HASH(sta) (sta[5]) /* Maximum number of frames to buffer per power saving station */ #define STA_MAX_TX_BUFFER 128 /* 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) static inline void __sta_info_get(struct sta_info *sta) { kref_get(&sta->kref); } struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); void sta_info_put(struct sta_info *sta); struct sta_info * sta_info_add(struct ieee80211_local *local, struct net_device *dev, u8 *addr, gfp_t gfp); void sta_info_remove(struct sta_info *sta); void sta_info_free(struct sta_info *sta); void sta_info_init(struct ieee80211_local *local); int sta_info_start(struct ieee80211_local *local); void sta_info_stop(struct ieee80211_local *local); void sta_info_remove_aid_ptr(struct sta_info *sta); void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); #endif /* STA_INFO_H */