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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
22struct rate_control_ref {
23 struct ieee80211_local *local;
24 struct rate_control_ops *ops;
25 void *priv;
26};
27
28void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
29 struct sta_info *sta,
30 struct ieee80211_tx_rate_control *txrc);
31
32static inline void rate_control_tx_status(struct ieee80211_local *local,
33 struct ieee80211_supported_band *sband,
34 struct sta_info *sta,
35 struct sk_buff *skb)
36{
37 struct rate_control_ref *ref = local->rate_ctrl;
38 struct ieee80211_sta *ista = &sta->sta;
39 void *priv_sta = sta->rate_ctrl_priv;
40
41 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
42 return;
43
44 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
45}
46
47
48static inline void rate_control_rate_init(struct sta_info *sta)
49{
50 struct ieee80211_local *local = sta->sdata->local;
51 struct rate_control_ref *ref = sta->rate_ctrl;
52 struct ieee80211_sta *ista = &sta->sta;
53 void *priv_sta = sta->rate_ctrl_priv;
54 struct ieee80211_supported_band *sband;
55 struct ieee80211_chanctx_conf *chanctx_conf;
56
57 if (!ref)
58 return;
59
60 rcu_read_lock();
61
62 chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
63 if (WARN_ON(!chanctx_conf)) {
64 rcu_read_unlock();
65 return;
66 }
67
68 sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
69
70 ieee80211_sta_set_rx_nss(sta);
71
72 ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista,
73 priv_sta);
74 rcu_read_unlock();
75 set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
76}
77
78static inline void rate_control_rate_update(struct ieee80211_local *local,
79 struct ieee80211_supported_band *sband,
80 struct sta_info *sta, u32 changed)
81{
82 struct rate_control_ref *ref = local->rate_ctrl;
83 struct ieee80211_sta *ista = &sta->sta;
84 void *priv_sta = sta->rate_ctrl_priv;
85 struct ieee80211_chanctx_conf *chanctx_conf;
86
87 if (ref && ref->ops->rate_update) {
88 rcu_read_lock();
89
90 chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
91 if (WARN_ON(!chanctx_conf)) {
92 rcu_read_unlock();
93 return;
94 }
95
96 ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def,
97 ista, priv_sta, changed);
98 rcu_read_unlock();
99 }
100 drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
101}
102
103static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
104 struct ieee80211_sta *sta,
105 gfp_t gfp)
106{
107 return ref->ops->alloc_sta(ref->priv, sta, gfp);
108}
109
110static inline void rate_control_free_sta(struct sta_info *sta)
111{
112 struct rate_control_ref *ref = sta->rate_ctrl;
113 struct ieee80211_sta *ista = &sta->sta;
114 void *priv_sta = sta->rate_ctrl_priv;
115
116 ref->ops->free_sta(ref->priv, ista, priv_sta);
117}
118
119static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
120{
121#ifdef CONFIG_MAC80211_DEBUGFS
122 struct rate_control_ref *ref = sta->rate_ctrl;
123 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
124 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
125 sta->debugfs.dir);
126#endif
127}
128
129static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
130{
131#ifdef CONFIG_MAC80211_DEBUGFS
132 struct rate_control_ref *ref = sta->rate_ctrl;
133 if (ref && ref->ops->remove_sta_debugfs)
134 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
135#endif
136}
137
138
139
140int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
141 const char *name);
142void rate_control_deinitialize(struct ieee80211_local *local);
143
144
145
146#ifdef CONFIG_MAC80211_RC_PID
147extern int rc80211_pid_init(void);
148extern void rc80211_pid_exit(void);
149#else
150static inline int rc80211_pid_init(void)
151{
152 return 0;
153}
154static inline void rc80211_pid_exit(void)
155{
156}
157#endif
158
159#ifdef CONFIG_MAC80211_RC_MINSTREL
160extern int rc80211_minstrel_init(void);
161extern void rc80211_minstrel_exit(void);
162#else
163static inline int rc80211_minstrel_init(void)
164{
165 return 0;
166}
167static inline void rc80211_minstrel_exit(void)
168{
169}
170#endif
171
172#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
173extern int rc80211_minstrel_ht_init(void);
174extern void rc80211_minstrel_ht_exit(void);
175#else
176static inline int rc80211_minstrel_ht_init(void)
177{
178 return 0;
179}
180static inline void rc80211_minstrel_ht_exit(void)
181{
182}
183#endif
184
185
186#endif
187
