LXR linux/net/mac80211/rate.h

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