[mirror_ubuntu-artful-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 <linux/kref.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"

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

/* Get a reference to the rate control algorithm. If `name' is NULL, get the
 * first available algorithm. */
struct rate_control_ref *rate_control_alloc(const char *name,
					    struct ieee80211_local *local);
void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
			   struct sta_info *sta,
			   struct ieee80211_tx_rate_control *txrc);
struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
void rate_control_put(struct rate_control_ref *ref);

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;

	if (!ref)
		return;

	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
}


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

	if (!ref)
		return;

	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];

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

static inline void rate_control_rate_update(struct ieee80211_local *local,
				    struct ieee80211_supported_band *sband,
				    struct sta_info *sta, u32 changed)
{
	struct rate_control_ref *ref = local->rate_ctrl;
	struct ieee80211_sta *ista = &sta->sta;
	void *priv_sta = sta->rate_ctrl_priv;

	if (ref && ref->ops->rate_update)
		ref->ops->rate_update(ref->priv, sband, ista,
				      priv_sta, changed);
}

static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
					   struct ieee80211_sta *sta,
					   gfp_t gfp)
{
	return ref->ops->alloc_sta(ref->priv, 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
}

/* functions for rate control related to a device */
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_PID
extern int rc80211_pid_init(void);
extern void rc80211_pid_exit(void);
#else
static inline int rc80211_pid_init(void)
{
	return 0;
}
static inline void rc80211_pid_exit(void)
{
}
#endif

#ifdef CONFIG_MAC80211_RC_MINSTREL
extern int rc80211_minstrel_init(void);
extern void rc80211_minstrel_exit(void);
#else
static inline int rc80211_minstrel_init(void)
{
	return 0;
}
static inline void rc80211_minstrel_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>
d0709a65	17	#include <linux/kref.h>
f0706e82 JB	18	#include <net/mac80211.h>
	19	#include "ieee80211_i.h"
	20	#include "sta_info.h"
	21
f0706e82	22	struct rate_control_ref {
4b7679a5	23	struct ieee80211_local *local;
f0706e82 JB	24	struct rate_control_ops *ops;
	25	void *priv;
	26	struct kref kref;
	27	};
	28
f0706e82 JB	29	/* Get a reference to the rate control algorithm. If `name' is NULL, get the
	30	* first available algorithm. */
	31	struct rate_control_ref rate_control_alloc(const char name,
	32	struct ieee80211_local *local);
4b7679a5	33	void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
e6a9854b JB	34	struct sta_info *sta,
e6a9854b JB	35	struct ieee80211_tx_rate_control *txrc);
f0706e82 JB	36	struct rate_control_ref rate_control_get(struct rate_control_ref ref);
	37	void rate_control_put(struct rate_control_ref *ref);
	38
4b7679a5 JB	39	static inline void rate_control_tx_status(struct ieee80211_local *local,
	40	struct ieee80211_supported_band *sband,
	41	struct sta_info *sta,
e039fa4a	42	struct sk_buff *skb)
f0706e82 JB	43	{
f0706e82 JB	44	struct rate_control_ref *ref = local->rate_ctrl;
4b7679a5 JB	45	struct ieee80211_sta *ista = &sta->sta;
4b7679a5 JB	46	void *priv_sta = sta->rate_ctrl_priv;
3c384053 V	47
	48	if (!ref)
	49	return;
	50
37eb0b16	51	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
f0706e82 JB	52	}
	53
	54
4b7679a5	55	static inline void rate_control_rate_init(struct sta_info *sta)
f0706e82	56	{
4b7679a5	57	struct ieee80211_local *local = sta->sdata->local;
f0706e82	58	struct rate_control_ref *ref = sta->rate_ctrl;
4b7679a5 JB	59	struct ieee80211_sta *ista = &sta->sta;
	60	void *priv_sta = sta->rate_ctrl_priv;
	61	struct ieee80211_supported_band *sband;
	62
af65cd96 JB	63	if (!ref)
	64	return;
	65
4b7679a5 JB	66	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
	67
	68	ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
f0706e82 JB	69	}
f0706e82 JB	70
81cb7623 S	71	static inline void rate_control_rate_update(struct ieee80211_local *local,
	72	struct ieee80211_supported_band *sband,
	73	struct sta_info *sta, u32 changed)
	74	{
	75	struct rate_control_ref *ref = local->rate_ctrl;
	76	struct ieee80211_sta *ista = &sta->sta;
	77	void *priv_sta = sta->rate_ctrl_priv;
	78
af65cd96	79	if (ref && ref->ops->rate_update)
81cb7623 S	80	ref->ops->rate_update(ref->priv, sband, ista,
	81	priv_sta, changed);
	82	}
f0706e82	83
f0706e82	84	static inline void rate_control_alloc_sta(struct rate_control_ref ref,
4b7679a5	85	struct ieee80211_sta *sta,
f0706e82 JB	86	gfp_t gfp)
f0706e82 JB	87	{
4b7679a5	88	return ref->ops->alloc_sta(ref->priv, sta, gfp);
f0706e82 JB	89	}
f0706e82 JB	90
4b7679a5	91	static inline void rate_control_free_sta(struct sta_info *sta)
f0706e82	92	{
4b7679a5 JB	93	struct rate_control_ref *ref = sta->rate_ctrl;
	94	struct ieee80211_sta *ista = &sta->sta;
	95	void *priv_sta = sta->rate_ctrl_priv;
	96
	97	ref->ops->free_sta(ref->priv, ista, priv_sta);
f0706e82 JB	98	}
f0706e82 JB	99
e9f207f0 JB	100	static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
	101	{
	102	#ifdef CONFIG_MAC80211_DEBUGFS
	103	struct rate_control_ref *ref = sta->rate_ctrl;
af65cd96	104	if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
e9f207f0 JB	105	ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
	106	sta->debugfs.dir);
	107	#endif
	108	}
	109
	110	static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
	111	{
	112	#ifdef CONFIG_MAC80211_DEBUGFS
	113	struct rate_control_ref *ref = sta->rate_ctrl;
af65cd96	114	if (ref && ref->ops->remove_sta_debugfs)
e9f207f0 JB	115	ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
	116	#endif
	117	}
	118
ff688089 JB	119	/* functions for rate control related to a device */
	120	int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
	121	const char *name);
	122	void rate_control_deinitialize(struct ieee80211_local *local);
	123
4b475898 JB	124
4b475898 JB	125	/* Rate control algorithms */
e5f5e733	126	#ifdef CONFIG_MAC80211_RC_PID
4b475898 JB	127	extern int rc80211_pid_init(void);
	128	extern void rc80211_pid_exit(void);
	129	#else
	130	static inline int rc80211_pid_init(void)
	131	{
	132	return 0;
	133	}
	134	static inline void rc80211_pid_exit(void)
	135	{
	136	}
	137	#endif
	138
cccf129f FF	139	#ifdef CONFIG_MAC80211_RC_MINSTREL
	140	extern int rc80211_minstrel_init(void);
	141	extern void rc80211_minstrel_exit(void);
	142	#else
	143	static inline int rc80211_minstrel_init(void)
	144	{
	145	return 0;
	146	}
	147	static inline void rc80211_minstrel_exit(void)
	148	{
	149	}
	150	#endif
	151
	152
f0706e82	153	#endif /* IEEE80211_RATE_H */