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

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