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 <net/mac80211.h>
  18 #include "ieee80211_i.h"
  19 #include "sta_info.h"
  20 #include "driver-ops.h"
  21
  22 struct rate_control_ref {
  23         const struct rate_control_ops *ops;
  24         void *priv;
  25 };
  26
  27 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
  28                            struct sta_info *sta,
  29                            struct ieee80211_tx_rate_control *txrc);
  30
  31 void rate_control_tx_status(struct ieee80211_local *local,
  32                             struct ieee80211_supported_band *sband,
  33                             struct ieee80211_tx_status *st);
  34
  35 void rate_control_rate_init(struct sta_info *sta);
  36 void rate_control_rate_update(struct ieee80211_local *local,
  37                                     struct ieee80211_supported_band *sband,
  38                                     struct sta_info *sta, u32 changed);
  39
  40 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
  41                                            struct sta_info *sta, gfp_t gfp)
  42 {
  43         spin_lock_init(&sta->rate_ctrl_lock);
  44         return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
  45 }
  46
  47 static inline void rate_control_free_sta(struct sta_info *sta)
  48 {
  49         struct rate_control_ref *ref = sta->rate_ctrl;
  50         struct ieee80211_sta *ista = &sta->sta;
  51         void *priv_sta = sta->rate_ctrl_priv;
  52
  53         ref->ops->free_sta(ref->priv, ista, priv_sta);
  54 }
  55
  56 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
  57 {
  58 #ifdef CONFIG_MAC80211_DEBUGFS
  59         struct rate_control_ref *ref = sta->rate_ctrl;
  60         if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
  61                 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
  62                                           sta->debugfs_dir);
  63 #endif
  64 }
  65
  66 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
  67 {
  68 #ifdef CONFIG_MAC80211_DEBUGFS
  69         struct rate_control_ref *ref = sta->rate_ctrl;
  70         if (ref && ref->ops->remove_sta_debugfs)
  71                 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
  72 #endif
  73 }
  74
  75 void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata);
  76
  77 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
  78  * first available algorithm. */
  79 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
  80                                  const char *name);
  81 void rate_control_deinitialize(struct ieee80211_local *local);
  82
  83
  84 /* Rate control algorithms */
  85 #ifdef CONFIG_MAC80211_RC_MINSTREL
  86 int rc80211_minstrel_init(void);
  87 void rc80211_minstrel_exit(void);
  88 #else
  89 static inline int rc80211_minstrel_init(void)
  90 {
  91         return 0;
  92 }
  93 static inline void rc80211_minstrel_exit(void)
  94 {
  95 }
  96 #endif
  97
  98
  99 #endif /* IEEE80211_RATE_H */