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
rate_control_tx_status(struct ieee80211_local * local,struct ieee80211_supported_band * sband,struct sta_info * sta,struct sk_buff * skb)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
rate_control_rate_init(struct sta_info * sta)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
rate_control_rate_update(struct ieee80211_local * local,struct ieee80211_supported_band * sband,struct sta_info * sta,u32 changed,enum nl80211_channel_type oper_chan_type)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
rate_control_alloc_sta(struct rate_control_ref * ref,struct ieee80211_sta * sta,gfp_t gfp)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
rate_control_free_sta(struct sta_info * sta)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
rate_control_add_sta_debugfs(struct sta_info * sta)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
rate_control_remove_sta_debugfs(struct sta_info * sta)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
rc80211_pid_init(void)128 static inline int rc80211_pid_init(void)
129 {
130 return 0;
131 }
rc80211_pid_exit(void)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
rc80211_minstrel_init(void)141 static inline int rc80211_minstrel_init(void)
142 {
143 return 0;
144 }
rc80211_minstrel_exit(void)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
rc80211_minstrel_ht_init(void)154 static inline int rc80211_minstrel_ht_init(void)
155 {
156 return 0;
157 }
rc80211_minstrel_ht_exit(void)158 static inline void rc80211_minstrel_ht_exit(void)
159 {
160 }
161 #endif
162
163
164 #endif /* IEEE80211_RATE_H */
165