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TOMOYO Linux Cross Reference
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 <linux/kref.h>
 18 #include <net/mac80211.h>
 19 #include "ieee80211_i.h"
 20 #include "sta_info.h"
 21 
 22 struct rate_control_ref {
 23         struct ieee80211_local *local;
 24         struct rate_control_ops *ops;
 25         void *priv;
 26         struct kref kref;
 27 };
 28 
 29 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
 30                            struct sta_info *sta,
 31                            struct ieee80211_tx_rate_control *txrc);
 32 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
 33 void rate_control_put(struct rate_control_ref *ref);
 34 
 35 static inline void rate_control_tx_status(struct ieee80211_local *local,
 36                                           struct ieee80211_supported_band *sband,
 37                                           struct sta_info *sta,
 38                                           struct sk_buff *skb)
 39 {
 40         struct rate_control_ref *ref = local->rate_ctrl;
 41         struct ieee80211_sta *ista = &sta->sta;
 42         void *priv_sta = sta->rate_ctrl_priv;
 43 
 44         if (!ref)
 45                 return;
 46 
 47         ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
 48 }
 49 
 50 
 51 static inline void rate_control_rate_init(struct sta_info *sta)
 52 {
 53         struct ieee80211_local *local = sta->sdata->local;
 54         struct rate_control_ref *ref = sta->rate_ctrl;
 55         struct ieee80211_sta *ista = &sta->sta;
 56         void *priv_sta = sta->rate_ctrl_priv;
 57         struct ieee80211_supported_band *sband;
 58 
 59         if (!ref)
 60                 return;
 61 
 62         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 63 
 64         ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
 65 }
 66 
 67 static inline void rate_control_rate_update(struct ieee80211_local *local,
 68                                     struct ieee80211_supported_band *sband,
 69                                     struct sta_info *sta, u32 changed,
 70                                     enum nl80211_channel_type oper_chan_type)
 71 {
 72         struct rate_control_ref *ref = local->rate_ctrl;
 73         struct ieee80211_sta *ista = &sta->sta;
 74         void *priv_sta = sta->rate_ctrl_priv;
 75 
 76         if (ref && ref->ops->rate_update)
 77                 ref->ops->rate_update(ref->priv, sband, ista,
 78                                       priv_sta, changed, oper_chan_type);
 79 }
 80 
 81 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
 82                                            struct ieee80211_sta *sta,
 83                                            gfp_t gfp)
 84 {
 85         return ref->ops->alloc_sta(ref->priv, sta, gfp);
 86 }
 87 
 88 static inline void rate_control_free_sta(struct sta_info *sta)
 89 {
 90         struct rate_control_ref *ref = sta->rate_ctrl;
 91         struct ieee80211_sta *ista = &sta->sta;
 92         void *priv_sta = sta->rate_ctrl_priv;
 93 
 94         ref->ops->free_sta(ref->priv, ista, priv_sta);
 95 }
 96 
 97 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
 98 {
 99 #ifdef CONFIG_MAC80211_DEBUGFS
100         struct rate_control_ref *ref = sta->rate_ctrl;
101         if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
102                 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
103                                           sta->debugfs.dir);
104 #endif
105 }
106 
107 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
108 {
109 #ifdef CONFIG_MAC80211_DEBUGFS
110         struct rate_control_ref *ref = sta->rate_ctrl;
111         if (ref && ref->ops->remove_sta_debugfs)
112                 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
113 #endif
114 }
115 
116 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
117  * first available algorithm. */
118 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
119                                  const char *name);
120 void rate_control_deinitialize(struct ieee80211_local *local);
121 
122 
123 /* Rate control algorithms */
124 #ifdef CONFIG_MAC80211_RC_PID
125 extern int rc80211_pid_init(void);
126 extern void rc80211_pid_exit(void);
127 #else
128 static inline int rc80211_pid_init(void)
129 {
130         return 0;
131 }
132 static inline void rc80211_pid_exit(void)
133 {
134 }
135 #endif
136 
137 #ifdef CONFIG_MAC80211_RC_MINSTREL
138 extern int rc80211_minstrel_init(void);
139 extern void rc80211_minstrel_exit(void);
140 #else
141 static inline int rc80211_minstrel_init(void)
142 {
143         return 0;
144 }
145 static inline void rc80211_minstrel_exit(void)
146 {
147 }
148 #endif
149 
150 #ifdef CONFIG_MAC80211_RC_MINSTREL_HT
151 extern int rc80211_minstrel_ht_init(void);
152 extern void rc80211_minstrel_ht_exit(void);
153 #else
154 static inline int rc80211_minstrel_ht_init(void)
155 {
156         return 0;
157 }
158 static inline void rc80211_minstrel_ht_exit(void)
159 {
160 }
161 #endif
162 
163 
164 #endif /* IEEE80211_RATE_H */
165 

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