[mirror_ubuntu-hirsute-kernel.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 {
	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
}

void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata);

/* 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
f0706e82 JB	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"
8f727ef3	20	#include "driver-ops.h"
f0706e82	21
f0706e82	22	struct rate_control_ref {
631ad703	23	const struct rate_control_ops *ops;
f0706e82	24	void *priv;
f0706e82 JB	25	};
f0706e82 JB	26
4b7679a5	27	void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
e6a9854b JB	28	struct sta_info *sta,
e6a9854b JB	29	struct ieee80211_tx_rate_control *txrc);
f0706e82	30
4b7679a5 JB	31	static inline void rate_control_tx_status(struct ieee80211_local *local,
	32	struct ieee80211_supported_band *sband,
	33	struct sta_info *sta,
e039fa4a	34	struct sk_buff *skb)
f0706e82 JB	35	{
f0706e82 JB	36	struct rate_control_ref *ref = local->rate_ctrl;
4b7679a5 JB	37	struct ieee80211_sta *ista = &sta->sta;
4b7679a5 JB	38	void *priv_sta = sta->rate_ctrl_priv;
f684565e	39	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
3c384053	40
2cfc6fc5	41	if (!ref \|\| !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
3c384053 V	42	return;
3c384053 V	43
35c347ac	44	spin_lock_bh(&sta->rate_ctrl_lock);
f684565e FF	45	if (ref->ops->tx_status)
	46	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
	47	else
	48	ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
35c347ac	49	spin_unlock_bh(&sta->rate_ctrl_lock);
f0706e82 JB	50	}
f0706e82 JB	51
f027c2ac FF	52	static inline void
	53	rate_control_tx_status_noskb(struct ieee80211_local *local,
	54	struct ieee80211_supported_band *sband,
	55	struct sta_info *sta,
	56	struct ieee80211_tx_info *info)
	57	{
	58	struct rate_control_ref *ref = local->rate_ctrl;
	59	struct ieee80211_sta *ista = &sta->sta;
	60	void *priv_sta = sta->rate_ctrl_priv;
	61
	62	if (!ref \|\| !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
	63	return;
	64
	65	if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
	66	return;
	67
35c347ac	68	spin_lock_bh(&sta->rate_ctrl_lock);
f027c2ac	69	ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
35c347ac	70	spin_unlock_bh(&sta->rate_ctrl_lock);
f027c2ac	71	}
f0706e82	72
eb6d9293 DV	73	void rate_control_rate_init(struct sta_info *sta);
eb6d9293 DV	74	void rate_control_rate_update(struct ieee80211_local *local,
81cb7623	75	struct ieee80211_supported_band *sband,
eb6d9293	76	struct sta_info *sta, u32 changed);
f0706e82	77
f0706e82	78	static inline void rate_control_alloc_sta(struct rate_control_ref ref,
35c347ac	79	struct sta_info *sta, gfp_t gfp)
f0706e82	80	{
35c347ac JB	81	spin_lock_init(&sta->rate_ctrl_lock);
35c347ac JB	82	return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
f0706e82 JB	83	}
f0706e82 JB	84
4b7679a5	85	static inline void rate_control_free_sta(struct sta_info *sta)
f0706e82	86	{
4b7679a5 JB	87	struct rate_control_ref *ref = sta->rate_ctrl;
	88	struct ieee80211_sta *ista = &sta->sta;
	89	void *priv_sta = sta->rate_ctrl_priv;
	90
	91	ref->ops->free_sta(ref->priv, ista, priv_sta);
f0706e82 JB	92	}
f0706e82 JB	93
e9f207f0 JB	94	static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
	95	{
	96	#ifdef CONFIG_MAC80211_DEBUGFS
	97	struct rate_control_ref *ref = sta->rate_ctrl;
fc4a25c5	98	if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
e9f207f0	99	ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
fc4a25c5	100	sta->debugfs_dir);
e9f207f0 JB	101	#endif
	102	}
	103
	104	static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
	105	{
	106	#ifdef CONFIG_MAC80211_DEBUGFS
	107	struct rate_control_ref *ref = sta->rate_ctrl;
af65cd96	108	if (ref && ref->ops->remove_sta_debugfs)
e9f207f0 JB	109	ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
	110	#endif
	111	}
	112
e8e4f528 JB	113	void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata);
e8e4f528 JB	114
209c671d AS	115	/* Get a reference to the rate control algorithm. If `name' is NULL, get the
209c671d AS	116	* first available algorithm. */
ff688089 JB	117	int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
	118	const char *name);
	119	void rate_control_deinitialize(struct ieee80211_local *local);
	120
4b475898 JB	121
4b475898 JB	122	/* Rate control algorithms */
cccf129f	123	#ifdef CONFIG_MAC80211_RC_MINSTREL
c1b1203d JP	124	int rc80211_minstrel_init(void);
c1b1203d JP	125	void rc80211_minstrel_exit(void);
cccf129f FF	126	#else
	127	static inline int rc80211_minstrel_init(void)
	128	{
	129	return 0;
	130	}
	131	static inline void rc80211_minstrel_exit(void)
	132	{
	133	}
	134	#endif
	135
ec8aa669	136	#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
c1b1203d JP	137	int rc80211_minstrel_ht_init(void);
c1b1203d JP	138	void rc80211_minstrel_ht_exit(void);
ec8aa669 FF	139	#else
	140	static inline int rc80211_minstrel_ht_init(void)
	141	{
	142	return 0;
	143	}
	144	static inline void rc80211_minstrel_ht_exit(void)
	145	{
	146	}
	147	#endif
	148
cccf129f	149
f0706e82	150	#endif /* IEEE80211_RATE_H */