[deliverable/linux.git] / net / mac80211 / 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 "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_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.
 * @WLAN_STA_PSPOLL: Station has just PS-polled us.
 * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
 *	IEEE80211_TXCTL_CLEAR_PS_FILT control flag) when the next
 *	frame to this station is transmitted.
 */
enum ieee80211_sta_info_flags {
	WLAN_STA_AUTH		= 1<<0,
	WLAN_STA_ASSOC		= 1<<1,
	WLAN_STA_PS		= 1<<2,
	WLAN_STA_AUTHORIZED	= 1<<3,
	WLAN_STA_SHORT_PREAMBLE	= 1<<4,
	WLAN_STA_ASSOC_AP	= 1<<5,
	WLAN_STA_WME		= 1<<6,
	WLAN_STA_WDS		= 1<<7,
	WLAN_STA_PSPOLL		= 1<<8,
	WLAN_STA_CLEAR_PS_FILT	= 1<<9,
};

#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)
#define HT_AGG_STATE_DEBUGFS_CTL	BIT(7)

/**
 * 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;
};

/**
 * enum plink_state - state of a mesh peer link finite state machine
 *
 * @PLINK_LISTEN: initial state, considered the implicit state of non existant
 * 	mesh peer links
 * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer
 * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer
 * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh
 * 	peer
 * @PLINK_ESTAB: mesh peer link is established
 * @PLINK_HOLDING: mesh peer link is being closed or cancelled
 * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded
 */
enum plink_state {
	PLINK_LISTEN,
	PLINK_OPN_SNT,
	PLINK_OPN_RCVD,
	PLINK_CNF_RCVD,
	PLINK_ESTAB,
	PLINK_HOLDING,
	PLINK_BLOCKED
};

/**
 * 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;
};


/* see __sta_info_unlink */
#define STA_INFO_PIN_STAT_NORMAL	0
#define STA_INFO_PIN_STAT_PINNED	1
#define STA_INFO_PIN_STAT_DESTROY	2

/**
 * 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
 * @addr: MAC address of this STA
 * @aid: STA's unique AID (1..2007, 0 = not assigned yet),
 *	only used in AP (and IBSS?) mode
 * @flags: STA flags, see &enum ieee80211_sta_info_flags
 * @ps_tx_buf: buffer of frames to transmit to this station
 *	when it leaves power saving state
 * @tx_filtered: buffer of frames we already tried to transmit
 *	but were filtered by hardware due to STA having entered
 *	power saving state
 * @rx_packets: Number of MSDUs received from this STA
 * @rx_bytes: Number of bytes received from this STA
 * @supp_rates: Bitmap of supported rates (per band)
 * @ht_info: HT capabilities of this STA
 */
struct sta_info {
	/* General information, mostly static */
	struct list_head list;
	struct sta_info *hnext;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct ieee80211_key *key;
	struct rate_control_ref *rate_ctrl;
	void *rate_ctrl_priv;
	struct ieee80211_ht_info ht_info;
	u64 supp_rates[IEEE80211_NUM_BANDS];
	u8 addr[ETH_ALEN];
	u16 aid;
	u16 listen_interval;

	/*
	 * for use by the internal lifetime management,
	 * see __sta_info_unlink
	 */
	u8 pin_status;

	/* frequently updated information, needs locking? */
	u32 flags;

	/*
	 * STA powersave frame queues, no more than the internal
	 * locking required.
	 */
	struct sk_buff_head ps_tx_buf;
	struct sk_buff_head tx_filtered;

	/* Updated from RX path only, no locking requirements */
	unsigned long rx_packets, rx_bytes;
	unsigned long wep_weak_iv_count;
	unsigned long last_rx;
	unsigned long num_duplicates; /* number of duplicate frames received
				       * from this STA */
	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 */
	/* last received seq/frag number from this STA (per RX queue) */
	__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
#endif

	/* Updated from TX status path only, no locking requirements */
	unsigned long tx_filtered_count;
	unsigned long tx_retry_failed, tx_retry_count;
	/* TODO: update in generic code not rate control? */
	u32 tx_num_consecutive_failures;
	u32 tx_num_mpdu_ok;
	u32 tx_num_mpdu_fail;
	/* moving percentage of failed MSDUs */
	unsigned int fail_avg;

	/* Updated from TX path only, no locking requirements */
	unsigned long tx_packets; /* number of RX/TX MSDUs */
	unsigned long tx_bytes;
	unsigned long tx_fragments; /* number of transmitted MPDUs */
	int txrate_idx;
	int last_txrate_idx;
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
#endif

	/* Debug counters, no locking doesn't matter */
	int channel_use;
	int channel_use_raw;

	/*
	 * Aggregation information, comes with own locking.
	 */
	struct sta_ampdu_mlme ampdu_mlme;
	u8 timer_to_tid[STA_TID_NUM];	/* identity mapping to ID timers */
	u8 tid_to_tx_q[STA_TID_NUM];	/* map tid to tx queue */

#ifdef CONFIG_MAC80211_MESH
	/*
	 * Mesh peer link attributes
	 * TODO: move to a sub-structure that is referenced with pointer?
	 */
	__le16 llid;		/* Local link ID */
	__le16 plid;		/* Peer link ID */
	__le16 reason;		/* Cancel reason on PLINK_HOLDING state */
	u8 plink_retries;	/* Retries in establishment */
	bool ignore_plink_timer;
	enum plink_state plink_state;
	u32 plink_timeout;
	struct timer_list plink_timer;
	spinlock_t plink_lock;	/* For peer_state reads / updates and other
				   updates in the structure. Ensures robust
				   transitions for the peerlink FSM */
#endif

#ifdef CONFIG_MAC80211_DEBUGFS
	struct sta_info_debugfsdentries {
		struct dentry *dir;
		struct dentry *flags;
		struct dentry *num_ps_buf_frames;
		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
};

static inline enum plink_state sta_plink_state(struct sta_info *sta)
{
#ifdef CONFIG_MAC80211_MESH
	return sta->plink_state;
#endif
	return PLINK_LISTEN;
}


/* 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)

/*
 * Get a STA info, must have be under RCU read lock.
 */
struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr);
/*
 * Get STA info by index, BROKEN!
 */
struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
				      struct net_device *dev);
/*
 * 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,
				u8 *addr, gfp_t gfp);
/*
 * Insert STA info into hash table/list, returns zero or a
 * -EEXIST if (if the same MAC address is already present).
 *
 * Calling this without RCU protection makes the caller
 * relinquish its reference to @sta.
 */
int sta_info_insert(struct sta_info *sta);
/*
 * Unlink a STA info from the hash table/list.
 * This can NULL the STA pointer if somebody else
 * has already unlinked it.
 */
void sta_info_unlink(struct sta_info **sta);

void sta_info_destroy(struct sta_info *sta);
void sta_info_set_tim_bit(struct sta_info *sta);
void sta_info_clear_tim_bit(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);
int sta_info_flush(struct ieee80211_local *local,
		    struct ieee80211_sub_if_data *sdata);

#endif /* STA_INFO_H */
Commit	Line	Data
f0706e82 JB	1	/*
	2	* Copyright 2002-2005, Devicescape Software, Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8
	9	#ifndef STA_INFO_H
	10	#define STA_INFO_H
	11
	12	#include <linux/list.h>
	13	#include <linux/types.h>
	14	#include <linux/if_ether.h>
f0706e82 JB	15	#include "ieee80211_key.h"
f0706e82 JB	16
238814fd JB	17	/**
	18	* enum ieee80211_sta_info_flags - Stations flags
	19	*
	20	* These flags are used with &struct sta_info's @flags member.
	21	*
	22	* @WLAN_STA_AUTH: Station is authenticated.
	23	* @WLAN_STA_ASSOC: Station is associated.
	24	* @WLAN_STA_PS: Station is in power-save mode
238814fd JB	25	* @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic.
	26	* This bit is always checked so needs to be enabled for all stations
	27	* when virtual port control is not in use.
	28	* @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
	29	* frames.
	30	* @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP.
	31	* @WLAN_STA_WME: Station is a QoS-STA.
	32	* @WLAN_STA_WDS: Station is one of our WDS peers.
4a9a66e9	33	* @WLAN_STA_PSPOLL: Station has just PS-polled us.
d46e144b JB	34	* @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
	35	* IEEE80211_TXCTL_CLEAR_PS_FILT control flag) when the next
	36	* frame to this station is transmitted.
238814fd JB	37	*/
	38	enum ieee80211_sta_info_flags {
	39	WLAN_STA_AUTH = 1<<0,
	40	WLAN_STA_ASSOC = 1<<1,
	41	WLAN_STA_PS = 1<<2,
836341a7 JB	42	WLAN_STA_AUTHORIZED = 1<<3,
	43	WLAN_STA_SHORT_PREAMBLE = 1<<4,
	44	WLAN_STA_ASSOC_AP = 1<<5,
	45	WLAN_STA_WME = 1<<6,
	46	WLAN_STA_WDS = 1<<7,
	47	WLAN_STA_PSPOLL = 1<<8,
d46e144b	48	WLAN_STA_CLEAR_PS_FILT = 1<<9,
238814fd	49	};
f0706e82	50
5aae2880 RR	51	#define STA_TID_NUM 16
5aae2880 RR	52	#define ADDBA_RESP_INTERVAL HZ
80656c20	53	#define HT_AGG_MAX_RETRIES (0x3)
5aae2880 RR	54
	55	#define HT_AGG_STATE_INITIATOR_SHIFT (4)
	56
80656c20 RR	57	#define HT_ADDBA_REQUESTED_MSK BIT(0)
	58	#define HT_ADDBA_DRV_READY_MSK BIT(1)
	59	#define HT_ADDBA_RECEIVED_MSK BIT(2)
5aae2880	60	#define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3)
80656c20	61	#define HT_AGG_STATE_INITIATOR_MSK BIT(HT_AGG_STATE_INITIATOR_SHIFT)
5aae2880	62	#define HT_AGG_STATE_IDLE (0x0)
80656c20 RR	63	#define HT_AGG_STATE_OPERATIONAL (HT_ADDBA_REQUESTED_MSK \| \
	64	HT_ADDBA_DRV_READY_MSK \| \
	65	HT_ADDBA_RECEIVED_MSK)
24709182	66	#define HT_AGG_STATE_DEBUGFS_CTL BIT(7)
80656c20 RR	67
	68	/**
	69	* struct tid_ampdu_tx - TID aggregation information (Tx).
	70	*
	71	* @state: TID's state in session state machine.
	72	* @dialog_token: dialog token for aggregation session
	73	* @ssn: Starting Sequence Number expected to be aggregated.
	74	* @addba_resp_timer: timer for peer's response to addba request
	75	* @addba_req_num: number of times addBA request has been sent.
	76	*/
	77	struct tid_ampdu_tx {
	78	u8 state;
	79	u8 dialog_token;
	80	u16 ssn;
	81	struct timer_list addba_resp_timer;
	82	u8 addba_req_num;
	83	};
5aae2880 RR	84
	85	/**
	86	* struct tid_ampdu_rx - TID aggregation information (Rx).
	87	*
	88	* @state: TID's state in session state machine.
	89	* @dialog_token: dialog token for aggregation session
	90	* @ssn: Starting Sequence Number expected to be aggregated.
	91	* @buf_size: buffer size for incoming A-MPDUs
	92	* @timeout: reset timer value.
	93	* @head_seq_num: head sequence number in reordering buffer.
	94	* @stored_mpdu_num: number of MPDUs in reordering buffer
	95	* @reorder_buf: buffer to reorder incoming aggregated MPDUs
	96	* @session_timer: check if peer keeps Tx-ing on the TID (by timeout value)
	97	*/
	98	struct tid_ampdu_rx {
	99	u8 state;
	100	u8 dialog_token;
	101	u16 ssn;
	102	u16 buf_size;
	103	u16 timeout;
	104	u16 head_seq_num;
	105	u16 stored_mpdu_num;
	106	struct sk_buff **reorder_buf;
	107	struct timer_list session_timer;
	108	};
	109
b4e08ea1 LCC	110	/**
	111	* enum plink_state - state of a mesh peer link finite state machine
	112	*
	113	* @PLINK_LISTEN: initial state, considered the implicit state of non existant
	114	* mesh peer links
	115	* @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer
	116	* @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer
	117	* @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh
	118	* peer
	119	* @PLINK_ESTAB: mesh peer link is established
	120	* @PLINK_HOLDING: mesh peer link is being closed or cancelled
	121	* @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded
	122	*/
ee385855	123	enum plink_state {
b4e08ea1 LCC	124	PLINK_LISTEN,
	125	PLINK_OPN_SNT,
	126	PLINK_OPN_RCVD,
	127	PLINK_CNF_RCVD,
	128	PLINK_ESTAB,
	129	PLINK_HOLDING,
	130	PLINK_BLOCKED
ee385855	131	};
ee385855	132
5aae2880 RR	133	/**
	134	* struct sta_ampdu_mlme - STA aggregation information.
	135	*
80656c20 RR	136	* @tid_rx: aggregation info for Rx per TID
80656c20 RR	137	* @tid_tx: aggregation info for Tx per TID
5aae2880	138	* @ampdu_rx: for locking sections in aggregation Rx flow
80656c20 RR	139	* @ampdu_tx: for locking sectionsi in aggregation Tx flow
80656c20 RR	140	* @dialog_token_allocator: dialog token enumerator for each new session;
5aae2880 RR	141	*/
	142	struct sta_ampdu_mlme {
	143	struct tid_ampdu_rx tid_rx[STA_TID_NUM];
80656c20	144	struct tid_ampdu_tx tid_tx[STA_TID_NUM];
5aae2880	145	spinlock_t ampdu_rx;
80656c20 RR	146	spinlock_t ampdu_tx;
80656c20 RR	147	u8 dialog_token_allocator;
5aae2880	148	};
f0706e82	149
d0709a65 JB	150
	151	/* see __sta_info_unlink */
	152	#define STA_INFO_PIN_STAT_NORMAL 0
	153	#define STA_INFO_PIN_STAT_PINNED 1
	154	#define STA_INFO_PIN_STAT_DESTROY 2
	155
693b1bbc JB	156	/**
	157	* struct sta_info - STA information
	158	*
	159	* This structure collects information about a station that
	160	* mac80211 is communicating with.
	161	*
	162	* @list: global linked list entry
	163	* @hnext: hash table linked list pointer
	164	* @local: pointer to the global information
	165	* @addr: MAC address of this STA
	166	* @aid: STA's unique AID (1..2007, 0 = not assigned yet),
	167	* only used in AP (and IBSS?) mode
	168	* @flags: STA flags, see &enum ieee80211_sta_info_flags
	169	* @ps_tx_buf: buffer of frames to transmit to this station
	170	* when it leaves power saving state
	171	* @tx_filtered: buffer of frames we already tried to transmit
	172	* but were filtered by hardware due to STA having entered
	173	* power saving state
	174	* @rx_packets: Number of MSDUs received from this STA
	175	* @rx_bytes: Number of bytes received from this STA
	176	* @supp_rates: Bitmap of supported rates (per band)
	177	* @ht_info: HT capabilities of this STA
	178	*/
f0706e82	179	struct sta_info {
693b1bbc	180	/* General information, mostly static */
f0706e82	181	struct list_head list;
693b1bbc	182	struct sta_info *hnext;
f0706e82	183	struct ieee80211_local *local;
d0709a65	184	struct ieee80211_sub_if_data *sdata;
f0706e82	185	struct ieee80211_key *key;
f0706e82 JB	186	struct rate_control_ref *rate_ctrl;
f0706e82 JB	187	void *rate_ctrl_priv;
693b1bbc JB	188	struct ieee80211_ht_info ht_info;
	189	u64 supp_rates[IEEE80211_NUM_BANDS];
	190	u8 addr[ETH_ALEN];
	191	u16 aid;
	192	u16 listen_interval;
f0706e82	193
693b1bbc JB	194	/*
	195	* for use by the internal lifetime management,
	196	* see __sta_info_unlink
	197	*/
	198	u8 pin_status;
	199
	200	/* frequently updated information, needs locking? */
	201	u32 flags;
	202
	203	/*
	204	* STA powersave frame queues, no more than the internal
	205	* locking required.
	206	*/
	207	struct sk_buff_head ps_tx_buf;
	208	struct sk_buff_head tx_filtered;
	209
	210	/* Updated from RX path only, no locking requirements */
	211	unsigned long rx_packets, rx_bytes;
	212	unsigned long wep_weak_iv_count;
	213	unsigned long last_rx;
f0706e82 JB	214	unsigned long num_duplicates; /* number of duplicate frames received
f0706e82 JB	215	* from this STA */
f0706e82 JB	216	unsigned long rx_fragments; /* number of received MPDUs */
f0706e82 JB	217	unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
f0706e82 JB	218	int last_rssi; /* RSSI of last received frame from this STA */
	219	int last_signal; /* signal of last received frame from this STA */
	220	int last_noise; /* noise of last received frame from this STA */
693b1bbc JB	221	/* last received seq/frag number from this STA (per RX queue) */
693b1bbc JB	222	__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
f0706e82 JB	223	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
f0706e82 JB	224	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
693b1bbc JB	225	#endif
	226
	227	/* Updated from TX status path only, no locking requirements */
	228	unsigned long tx_filtered_count;
	229	unsigned long tx_retry_failed, tx_retry_count;
	230	/* TODO: update in generic code not rate control? */
	231	u32 tx_num_consecutive_failures;
	232	u32 tx_num_mpdu_ok;
	233	u32 tx_num_mpdu_fail;
	234	/* moving percentage of failed MSDUs */
	235	unsigned int fail_avg;
	236
	237	/* Updated from TX path only, no locking requirements */
	238	unsigned long tx_packets; /* number of RX/TX MSDUs */
	239	unsigned long tx_bytes;
	240	unsigned long tx_fragments; /* number of transmitted MPDUs */
	241	int txrate_idx;
	242	int last_txrate_idx;
	243	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
f0706e82	244	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
693b1bbc	245	#endif
f0706e82	246
693b1bbc JB	247	/* Debug counters, no locking doesn't matter */
	248	int channel_use;
	249	int channel_use_raw;
e9f207f0	250
d0709a65	251	/*
693b1bbc	252	* Aggregation information, comes with own locking.
d0709a65	253	*/
5aae2880	254	struct sta_ampdu_mlme ampdu_mlme;
693b1bbc	255	u8 timer_to_tid[STA_TID_NUM]; /* identity mapping to ID timers */
80656c20	256	u8 tid_to_tx_q[STA_TID_NUM]; /* map tid to tx queue */
693b1bbc	257
ee385855	258	#ifdef CONFIG_MAC80211_MESH
693b1bbc JB	259	/*
	260	* Mesh peer link attributes
	261	* TODO: move to a sub-structure that is referenced with pointer?
	262	*/
ee385855 LCC	263	__le16 llid; /* Local link ID */
ee385855 LCC	264	__le16 plid; /* Peer link ID */
b4e08ea1	265	__le16 reason; /* Cancel reason on PLINK_HOLDING state */
7495883b JB	266	u8 plink_retries; /* Retries in establishment */
7495883b JB	267	bool ignore_plink_timer;
ee385855 LCC	268	enum plink_state plink_state;
	269	u32 plink_timeout;
	270	struct timer_list plink_timer;
ee385855 LCC	271	spinlock_t plink_lock; /* For peer_state reads / updates and other
	272	updates in the structure. Ensures robust
	273	transitions for the peerlink FSM */
	274	#endif
10816d40	275
e9f207f0 JB	276	#ifdef CONFIG_MAC80211_DEBUGFS
	277	struct sta_info_debugfsdentries {
	278	struct dentry *dir;
	279	struct dentry *flags;
	280	struct dentry *num_ps_buf_frames;
e9f207f0 JB	281	struct dentry *inactive_ms;
	282	struct dentry *last_seq_ctrl;
	283	#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	284	struct dentry *wme_rx_queue;
	285	struct dentry *wme_tx_queue;
	286	#endif
eb2ba62e	287	struct dentry *agg_status;
e9f207f0 JB	288	} debugfs;
e9f207f0 JB	289	#endif
f0706e82 JB	290	};
f0706e82 JB	291
d6d1a5a7 JB	292	static inline enum plink_state sta_plink_state(struct sta_info *sta)
	293	{
	294	#ifdef CONFIG_MAC80211_MESH
	295	return sta->plink_state;
	296	#endif
b4e08ea1	297	return PLINK_LISTEN;
d6d1a5a7 JB	298	}
d6d1a5a7 JB	299
f0706e82 JB	300
	301	/* Maximum number of concurrently registered stations */
	302	#define MAX_STA_COUNT 2007
	303
	304	#define STA_HASH_SIZE 256
	305	#define STA_HASH(sta) (sta[5])
	306
	307
	308	/* Maximum number of frames to buffer per power saving station */
	309	#define STA_MAX_TX_BUFFER 128
	310
	311	/* Minimum buffered frame expiry time. If STA uses listen interval that is
	312	* smaller than this value, the minimum value here is used instead. */
	313	#define STA_TX_BUFFER_EXPIRE (10 * HZ)
	314
	315	/* How often station data is cleaned up (e.g., expiration of buffered frames)
	316	*/
	317	#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
	318
d0709a65 JB	319	/*
	320	* Get a STA info, must have be under RCU read lock.
	321	*/
	322	struct sta_info sta_info_get(struct ieee80211_local local, u8 *addr);
	323	/*
	324	* Get STA info by index, BROKEN!
	325	*/
ee385855 LCC	326	struct sta_info sta_info_get_by_idx(struct ieee80211_local local, int idx,
ee385855 LCC	327	struct net_device *dev);
d0709a65	328	/*
73651ee6 JB	329	* Create a new STA info, caller owns returned structure
73651ee6 JB	330	* until sta_info_insert().
d0709a65	331	*/
73651ee6 JB	332	struct sta_info sta_info_alloc(struct ieee80211_sub_if_data sdata,
	333	u8 *addr, gfp_t gfp);
	334	/*
	335	* Insert STA info into hash table/list, returns zero or a
	336	* -EEXIST if (if the same MAC address is already present).
	337	*
	338	* Calling this without RCU protection makes the caller
	339	* relinquish its reference to @sta.
	340	*/
	341	int sta_info_insert(struct sta_info *sta);
d0709a65 JB	342	/*
	343	* Unlink a STA info from the hash table/list.
	344	* This can NULL the STA pointer if somebody else
	345	* has already unlinked it.
	346	*/
	347	void sta_info_unlink(struct sta_info **sta);
f0706e82	348
d0709a65	349	void sta_info_destroy(struct sta_info *sta);
004c872e JB	350	void sta_info_set_tim_bit(struct sta_info *sta);
	351	void sta_info_clear_tim_bit(struct sta_info *sta);
	352
d0709a65 JB	353	void sta_info_init(struct ieee80211_local *local);
	354	int sta_info_start(struct ieee80211_local *local);
	355	void sta_info_stop(struct ieee80211_local *local);
44213b5e	356	int sta_info_flush(struct ieee80211_local *local,
d0709a65 JB	357	struct ieee80211_sub_if_data *sdata);
d0709a65 JB	358
f0706e82	359	#endif /* STA_INFO_H */