| /* |
| * 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/kref.h> |
| #include "ieee80211_key.h" |
| |
| /* Stations flags (struct sta_info::flags) */ |
| #define WLAN_STA_AUTH BIT(0) |
| #define WLAN_STA_ASSOC BIT(1) |
| #define WLAN_STA_PS BIT(2) |
| #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */ |
| #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */ |
| #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is |
| * controlling whether STA is authorized to |
| * send and receive non-IEEE 802.1X frames |
| */ |
| #define WLAN_STA_SHORT_PREAMBLE BIT(7) |
| /* whether this is an AP that we are associated with as a client */ |
| #define WLAN_STA_ASSOC_AP BIT(8) |
| #define WLAN_STA_WME BIT(9) |
| #define WLAN_STA_WDS BIT(27) |
| |
| #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; |
| u32 supp_rates; /* bitmap of supported rates in local->curr_rates */ |
| int txrate; /* index in local->curr_rates */ |
| int last_txrate; /* last rate used to send a frame to this STA */ |
| int last_nonerp_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 |
| } 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); |
| int sta_info_min_txrate_get(struct ieee80211_local *local); |
| 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 */ |