net/mac80211/sta_info.h - linux/kernel/git/klassert/ipsec - Git at Google

 /*
  * 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_STATE_INITIATOR_SHIFT	(4)

 #define HT_AGG_STATE_REQ_STOP_BA_MSK	BIT(3)

 #define HT_AGG_STATE_IDLE		(0x0)
 #define HT_AGG_STATE_OPERATIONAL	(0x7)

 /**
  * 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_agg_info_rx: aggregation info for Rx per TID
  * @ampdu_rx: for locking sections in aggregation Rx flow
  */
 struct sta_ampdu_mlme {
 	struct tid_ampdu_rx tid_rx[STA_TID_NUM];
 	spinlock_t ampdu_rx;
 };

 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 */

 #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 */
	/*
	* 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_STATE_INITIATOR_SHIFT (4)

	#define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3)

	#define HT_AGG_STATE_IDLE (0x0)
	#define HT_AGG_STATE_OPERATIONAL (0x7)

	/**
	* 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_agg_info_rx: aggregation info for Rx per TID
	* @ampdu_rx: for locking sections in aggregation Rx flow
	*/
	struct sta_ampdu_mlme {
	struct tid_ampdu_rx tid_rx[STA_TID_NUM];
	spinlock_t ampdu_rx;
	};

	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 */

	#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 */