root/net/mac80211/rate.h

INCLUDED FROM

DEFINITIONS

1. rate_control_tx_status
2. rate_control_rate_init
3. rate_control_clear
4. rate_control_alloc_sta
5. rate_control_free_sta
6. rate_control_add_sta_debugfs
7. rate_control_remove_sta_debugfs
8. rc80211_pid_init
9. rc80211_pid_exit
10. rc80211_minstrel_init
11. rc80211_minstrel_exit

/*
 * 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 ieee80211_supported_band *sband,
                           struct sta_info *sta, struct sk_buff *skb,
                           struct rate_selection *sel);
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;

        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;

        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_clear(struct ieee80211_local *local)
{
        struct rate_control_ref *ref = local->rate_ctrl;
        ref->ops->clear(ref->priv);
}

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 (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->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 */