linux/net/mac80211/rate.h
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   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
  22struct rate_control_ref {
  23        struct ieee80211_local *local;
  24        struct rate_control_ops *ops;
  25        void *priv;
  26};
  27
  28void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
  29                           struct sta_info *sta,
  30                           struct ieee80211_tx_rate_control *txrc);
  31
  32static 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
  41        if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
  42                return;
  43
  44        ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
  45}
  46
  47
  48static inline void rate_control_rate_init(struct sta_info *sta)
  49{
  50        struct ieee80211_local *local = sta->sdata->local;
  51        struct rate_control_ref *ref = sta->rate_ctrl;
  52        struct ieee80211_sta *ista = &sta->sta;
  53        void *priv_sta = sta->rate_ctrl_priv;
  54        struct ieee80211_supported_band *sband;
  55
  56        if (!ref)
  57                return;
  58
  59        sband = local->hw.wiphy->bands[local->oper_channel->band];
  60
  61        ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
  62        set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
  63}
  64
  65static inline void rate_control_rate_update(struct ieee80211_local *local,
  66                                    struct ieee80211_supported_band *sband,
  67                                    struct sta_info *sta, u32 changed)
  68{
  69        struct rate_control_ref *ref = local->rate_ctrl;
  70        struct ieee80211_sta *ista = &sta->sta;
  71        void *priv_sta = sta->rate_ctrl_priv;
  72
  73        if (ref && ref->ops->rate_update)
  74                ref->ops->rate_update(ref->priv, sband, ista,
  75                                      priv_sta, changed);
  76        drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
  77}
  78
  79static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
  80                                           struct ieee80211_sta *sta,
  81                                           gfp_t gfp)
  82{
  83        return ref->ops->alloc_sta(ref->priv, sta, gfp);
  84}
  85
  86static 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
  95static 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
 105static 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. */
 116int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 117                                 const char *name);
 118void rate_control_deinitialize(struct ieee80211_local *local);
 119
 120
 121/* Rate control algorithms */
 122#ifdef CONFIG_MAC80211_RC_PID
 123extern int rc80211_pid_init(void);
 124extern void rc80211_pid_exit(void);
 125#else
 126static inline int rc80211_pid_init(void)
 127{
 128        return 0;
 129}
 130static inline void rc80211_pid_exit(void)
 131{
 132}
 133#endif
 134
 135#ifdef CONFIG_MAC80211_RC_MINSTREL
 136extern int rc80211_minstrel_init(void);
 137extern void rc80211_minstrel_exit(void);
 138#else
 139static inline int rc80211_minstrel_init(void)
 140{
 141        return 0;
 142}
 143static inline void rc80211_minstrel_exit(void)
 144{
 145}
 146#endif
 147
 148#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
 149extern int rc80211_minstrel_ht_init(void);
 150extern void rc80211_minstrel_ht_exit(void);
 151#else
 152static inline int rc80211_minstrel_ht_init(void)
 153{
 154        return 0;
 155}
 156static inline void rc80211_minstrel_ht_exit(void)
 157{
 158}
 159#endif
 160
 161
 162#endif /* IEEE80211_RATE_H */
 163
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