[deliverable/linux.git] / net / mac80211 / rate.h

/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
 *
 * 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 IEEE80211_RATE_H
#define IEEE80211_RATE_H

#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/types.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"
#include "driver-ops.h"

struct rate_control_ref {
	struct ieee80211_local *local;
	const struct rate_control_ops *ops;
	void *priv;
};

void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
			   struct sta_info *sta,
			   struct ieee80211_tx_rate_control *txrc);

static inline void rate_control_tx_status(struct ieee80211_local *local,
					  struct ieee80211_supported_band *sband,
					  struct sta_info *sta,
					  struct sk_buff *skb)
{
	struct rate_control_ref *ref = local->rate_ctrl;
	struct ieee80211_sta *ista = &sta->sta;
	void *priv_sta = sta->rate_ctrl_priv;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);

	if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
		return;

	spin_lock_bh(&sta->rate_ctrl_lock);
	if (ref->ops->tx_status)
		ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
	else
		ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
	spin_unlock_bh(&sta->rate_ctrl_lock);
}

static inline void
rate_control_tx_status_noskb(struct ieee80211_local *local,
			     struct ieee80211_supported_band *sband,
			     struct sta_info *sta,
			     struct ieee80211_tx_info *info)
{
	struct rate_control_ref *ref = local->rate_ctrl;
	struct ieee80211_sta *ista = &sta->sta;
	void *priv_sta = sta->rate_ctrl_priv;

	if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
		return;

	if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
		return;

	spin_lock_bh(&sta->rate_ctrl_lock);
	ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
	spin_unlock_bh(&sta->rate_ctrl_lock);
}

void rate_control_rate_init(struct sta_info *sta);
void rate_control_rate_update(struct ieee80211_local *local,
				    struct ieee80211_supported_band *sband,
				    struct sta_info *sta, u32 changed);

static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
					   struct sta_info *sta, gfp_t gfp)
{
	spin_lock_init(&sta->rate_ctrl_lock);
	return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
}

static inline void rate_control_free_sta(struct sta_info *sta)
{
	struct rate_control_ref *ref = sta->rate_ctrl;
	struct ieee80211_sta *ista = &sta->sta;
	void *priv_sta = sta->rate_ctrl_priv;

	ref->ops->free_sta(ref->priv, ista, priv_sta);
}

static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
{
#ifdef CONFIG_MAC80211_DEBUGFS
	struct rate_control_ref *ref = sta->rate_ctrl;
	if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
		ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
					  sta->debugfs_dir);
#endif
}

static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
{
#ifdef CONFIG_MAC80211_DEBUGFS
	struct rate_control_ref *ref = sta->rate_ctrl;
	if (ref && ref->ops->remove_sta_debugfs)
		ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
#endif
}

/* Get a reference to the rate control algorithm. If `name' is NULL, get the
 * first available algorithm. */
int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
				 const char *name);
void rate_control_deinitialize(struct ieee80211_local *local);


/* Rate control algorithms */
#ifdef CONFIG_MAC80211_RC_MINSTREL
int rc80211_minstrel_init(void);
void rc80211_minstrel_exit(void);
#else
static inline int rc80211_minstrel_init(void)
{
	return 0;
}
static inline void rc80211_minstrel_exit(void)
{
}
#endif

#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
int rc80211_minstrel_ht_init(void);
void rc80211_minstrel_ht_exit(void);
#else
static inline int rc80211_minstrel_ht_init(void)
{
	return 0;
}
static inline void rc80211_minstrel_ht_exit(void)
{
}
#endif


#endif /* IEEE80211_RATE_H */
Commit	Line	Data
	1	/*
	2	* Copyright 2002-2005, Instant802 Networks, Inc.
	3	* Copyright 2005, Devicescape Software, Inc.
	4	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#ifndef IEEE80211_RATE_H
	12	#define IEEE80211_RATE_H
	13
	14	#include <linux/netdevice.h>
	15	#include <linux/skbuff.h>
	16	#include <linux/types.h>
	17	#include <net/mac80211.h>
	18	#include "ieee80211_i.h"
	19	#include "sta_info.h"
	20	#include "driver-ops.h"
	21
	22	struct rate_control_ref {
	23	struct ieee80211_local *local;
	24	const struct rate_control_ops *ops;
	25	void *priv;
	26	};
	27
	28	void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
	29	struct sta_info *sta,
	30	struct ieee80211_tx_rate_control *txrc);
	31
	32	static inline void rate_control_tx_status(struct ieee80211_local *local,
	33	struct ieee80211_supported_band *sband,
	34	struct sta_info *sta,
	35	struct sk_buff *skb)
	36	{
	37	struct rate_control_ref *ref = local->rate_ctrl;
	38	struct ieee80211_sta *ista = &sta->sta;
	39	void *priv_sta = sta->rate_ctrl_priv;
	40	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	41
	42	if (!ref \|\| !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
	43	return;
	44
	45	spin_lock_bh(&sta->rate_ctrl_lock);
	46	if (ref->ops->tx_status)
	47	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
	48	else
	49	ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
	50	spin_unlock_bh(&sta->rate_ctrl_lock);
	51	}
	52
	53	static inline void
	54	rate_control_tx_status_noskb(struct ieee80211_local *local,
	55	struct ieee80211_supported_band *sband,
	56	struct sta_info *sta,
	57	struct ieee80211_tx_info *info)
	58	{
	59	struct rate_control_ref *ref = local->rate_ctrl;
	60	struct ieee80211_sta *ista = &sta->sta;
	61	void *priv_sta = sta->rate_ctrl_priv;
	62
	63	if (!ref \|\| !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
	64	return;
	65
	66	if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
	67	return;
	68
	69	spin_lock_bh(&sta->rate_ctrl_lock);
	70	ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
	71	spin_unlock_bh(&sta->rate_ctrl_lock);
	72	}
	73
	74	void rate_control_rate_init(struct sta_info *sta);
	75	void rate_control_rate_update(struct ieee80211_local *local,
	76	struct ieee80211_supported_band *sband,
	77	struct sta_info *sta, u32 changed);
	78
	79	static inline void rate_control_alloc_sta(struct rate_control_ref ref,
	80	struct sta_info *sta, gfp_t gfp)
	81	{
	82	spin_lock_init(&sta->rate_ctrl_lock);
	83	return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
	84	}
	85
	86	static inline void rate_control_free_sta(struct sta_info *sta)
	87	{
	88	struct rate_control_ref *ref = sta->rate_ctrl;
	89	struct ieee80211_sta *ista = &sta->sta;
	90	void *priv_sta = sta->rate_ctrl_priv;
	91
	92	ref->ops->free_sta(ref->priv, ista, priv_sta);
	93	}
	94
	95	static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
	96	{
	97	#ifdef CONFIG_MAC80211_DEBUGFS
	98	struct rate_control_ref *ref = sta->rate_ctrl;
	99	if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
	100	ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
	101	sta->debugfs_dir);
	102	#endif
	103	}
	104
	105	static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
	106	{
	107	#ifdef CONFIG_MAC80211_DEBUGFS
	108	struct rate_control_ref *ref = sta->rate_ctrl;
	109	if (ref && ref->ops->remove_sta_debugfs)
	110	ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
	111	#endif
	112	}
	113
	114	/* Get a reference to the rate control algorithm. If `name' is NULL, get the
	115	* first available algorithm. */
	116	int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
	117	const char *name);
	118	void rate_control_deinitialize(struct ieee80211_local *local);
	119
	120
	121	/* Rate control algorithms */
	122	#ifdef CONFIG_MAC80211_RC_MINSTREL
	123	int rc80211_minstrel_init(void);
	124	void rc80211_minstrel_exit(void);
	125	#else
	126	static inline int rc80211_minstrel_init(void)
	127	{
	128	return 0;
	129	}
	130	static inline void rc80211_minstrel_exit(void)
	131	{
	132	}
	133	#endif
	134
	135	#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
	136	int rc80211_minstrel_ht_init(void);
	137	void rc80211_minstrel_ht_exit(void);
	138	#else
	139	static inline int rc80211_minstrel_ht_init(void)
	140	{
	141	return 0;
	142	}
	143	static inline void rc80211_minstrel_ht_exit(void)
	144	{
	145	}
	146	#endif
	147
	148
	149	#endif /* IEEE80211_RATE_H */