Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[linux-2.6.git] / 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
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 */