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f0706e82 JB |
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" | |
8f727ef3 | 20 | #include "driver-ops.h" |
f0706e82 | 21 | |
f0706e82 | 22 | struct rate_control_ref { |
4b7679a5 | 23 | struct ieee80211_local *local; |
f0706e82 JB |
24 | struct rate_control_ops *ops; |
25 | void *priv; | |
f0706e82 JB |
26 | }; |
27 | ||
4b7679a5 | 28 | void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, |
e6a9854b JB |
29 | struct sta_info *sta, |
30 | struct ieee80211_tx_rate_control *txrc); | |
f0706e82 | 31 | |
4b7679a5 JB |
32 | static inline void rate_control_tx_status(struct ieee80211_local *local, |
33 | struct ieee80211_supported_band *sband, | |
34 | struct sta_info *sta, | |
e039fa4a | 35 | struct sk_buff *skb) |
f0706e82 JB |
36 | { |
37 | struct rate_control_ref *ref = local->rate_ctrl; | |
4b7679a5 JB |
38 | struct ieee80211_sta *ista = &sta->sta; |
39 | void *priv_sta = sta->rate_ctrl_priv; | |
3c384053 | 40 | |
2cfc6fc5 | 41 | if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
3c384053 V |
42 | return; |
43 | ||
37eb0b16 | 44 | ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); |
f0706e82 JB |
45 | } |
46 | ||
47 | ||
4b7679a5 | 48 | static inline void rate_control_rate_init(struct sta_info *sta) |
f0706e82 | 49 | { |
4b7679a5 | 50 | struct ieee80211_local *local = sta->sdata->local; |
f0706e82 | 51 | struct rate_control_ref *ref = sta->rate_ctrl; |
4b7679a5 JB |
52 | struct ieee80211_sta *ista = &sta->sta; |
53 | void *priv_sta = sta->rate_ctrl_priv; | |
54 | struct ieee80211_supported_band *sband; | |
55de908a | 55 | struct ieee80211_chanctx_conf *chanctx_conf; |
4b7679a5 | 56 | |
af65cd96 JB |
57 | if (!ref) |
58 | return; | |
59 | ||
55de908a JB |
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 | ||
4bf88530 | 68 | sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band]; |
4b7679a5 | 69 | |
8921d04e JB |
70 | ieee80211_sta_set_rx_nss(sta); |
71 | ||
3de805cf SW |
72 | ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista, |
73 | priv_sta); | |
74 | rcu_read_unlock(); | |
e1936e94 | 75 | set_sta_flag(sta, WLAN_STA_RATE_CONTROL); |
f0706e82 JB |
76 | } |
77 | ||
81cb7623 S |
78 | static inline void rate_control_rate_update(struct ieee80211_local *local, |
79 | struct ieee80211_supported_band *sband, | |
64f68e5d | 80 | struct sta_info *sta, u32 changed) |
81cb7623 S |
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; | |
3de805cf SW |
85 | struct ieee80211_chanctx_conf *chanctx_conf; |
86 | ||
87 | if (ref && ref->ops->rate_update) { | |
88 | rcu_read_lock(); | |
81cb7623 | 89 | |
3de805cf SW |
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 | } | |
8f727ef3 | 100 | drv_sta_rc_update(local, sta->sdata, &sta->sta, changed); |
81cb7623 | 101 | } |
f0706e82 | 102 | |
f0706e82 | 103 | static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, |
4b7679a5 | 104 | struct ieee80211_sta *sta, |
f0706e82 JB |
105 | gfp_t gfp) |
106 | { | |
4b7679a5 | 107 | return ref->ops->alloc_sta(ref->priv, sta, gfp); |
f0706e82 JB |
108 | } |
109 | ||
4b7679a5 | 110 | static inline void rate_control_free_sta(struct sta_info *sta) |
f0706e82 | 111 | { |
4b7679a5 JB |
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); | |
f0706e82 JB |
117 | } |
118 | ||
e9f207f0 JB |
119 | static 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; | |
af65cd96 | 123 | if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) |
e9f207f0 JB |
124 | ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, |
125 | sta->debugfs.dir); | |
126 | #endif | |
127 | } | |
128 | ||
129 | static 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; | |
af65cd96 | 133 | if (ref && ref->ops->remove_sta_debugfs) |
e9f207f0 JB |
134 | ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); |
135 | #endif | |
136 | } | |
137 | ||
209c671d AS |
138 | /* Get a reference to the rate control algorithm. If `name' is NULL, get the |
139 | * first available algorithm. */ | |
ff688089 JB |
140 | int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, |
141 | const char *name); | |
142 | void rate_control_deinitialize(struct ieee80211_local *local); | |
143 | ||
4b475898 JB |
144 | |
145 | /* Rate control algorithms */ | |
e5f5e733 | 146 | #ifdef CONFIG_MAC80211_RC_PID |
4b475898 JB |
147 | extern int rc80211_pid_init(void); |
148 | extern void rc80211_pid_exit(void); | |
149 | #else | |
150 | static inline int rc80211_pid_init(void) | |
151 | { | |
152 | return 0; | |
153 | } | |
154 | static inline void rc80211_pid_exit(void) | |
155 | { | |
156 | } | |
157 | #endif | |
158 | ||
cccf129f FF |
159 | #ifdef CONFIG_MAC80211_RC_MINSTREL |
160 | extern int rc80211_minstrel_init(void); | |
161 | extern void rc80211_minstrel_exit(void); | |
162 | #else | |
163 | static inline int rc80211_minstrel_init(void) | |
164 | { | |
165 | return 0; | |
166 | } | |
167 | static inline void rc80211_minstrel_exit(void) | |
168 | { | |
169 | } | |
170 | #endif | |
171 | ||
ec8aa669 FF |
172 | #ifdef CONFIG_MAC80211_RC_MINSTREL_HT |
173 | extern int rc80211_minstrel_ht_init(void); | |
174 | extern void rc80211_minstrel_ht_exit(void); | |
175 | #else | |
176 | static inline int rc80211_minstrel_ht_init(void) | |
177 | { | |
178 | return 0; | |
179 | } | |
180 | static inline void rc80211_minstrel_ht_exit(void) | |
181 | { | |
182 | } | |
183 | #endif | |
184 | ||
cccf129f | 185 | |
f0706e82 | 186 | #endif /* IEEE80211_RATE_H */ |