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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; |
631ad703 | 24 | const struct rate_control_ops *ops; |
f0706e82 | 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; | |
f684565e | 40 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
3c384053 | 41 | |
2cfc6fc5 | 42 | if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
3c384053 V |
43 | return; |
44 | ||
35c347ac | 45 | spin_lock_bh(&sta->rate_ctrl_lock); |
f684565e FF |
46 | if (ref->ops->tx_status) |
47 | ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); | |
48 | else | |
49 | ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info); | |
35c347ac | 50 | spin_unlock_bh(&sta->rate_ctrl_lock); |
f0706e82 JB |
51 | } |
52 | ||
f027c2ac FF |
53 | static inline void |
54 | rate_control_tx_status_noskb(struct ieee80211_local *local, | |
55 | struct ieee80211_supported_band *sband, | |
56 | struct sta_info *sta, | |
57 | struct ieee80211_tx_info *info) | |
58 | { | |
59 | struct rate_control_ref *ref = local->rate_ctrl; | |
60 | struct ieee80211_sta *ista = &sta->sta; | |
61 | void *priv_sta = sta->rate_ctrl_priv; | |
62 | ||
63 | if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
64 | return; | |
65 | ||
66 | if (WARN_ON_ONCE(!ref->ops->tx_status_noskb)) | |
67 | return; | |
68 | ||
35c347ac | 69 | spin_lock_bh(&sta->rate_ctrl_lock); |
f027c2ac | 70 | ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info); |
35c347ac | 71 | spin_unlock_bh(&sta->rate_ctrl_lock); |
f027c2ac | 72 | } |
f0706e82 | 73 | |
4b7679a5 | 74 | static inline void rate_control_rate_init(struct sta_info *sta) |
f0706e82 | 75 | { |
4b7679a5 | 76 | struct ieee80211_local *local = sta->sdata->local; |
f0706e82 | 77 | struct rate_control_ref *ref = sta->rate_ctrl; |
4b7679a5 JB |
78 | struct ieee80211_sta *ista = &sta->sta; |
79 | void *priv_sta = sta->rate_ctrl_priv; | |
80 | struct ieee80211_supported_band *sband; | |
55de908a | 81 | struct ieee80211_chanctx_conf *chanctx_conf; |
4b7679a5 | 82 | |
ddcc347b MK |
83 | ieee80211_sta_set_rx_nss(sta); |
84 | ||
af65cd96 JB |
85 | if (!ref) |
86 | return; | |
87 | ||
55de908a JB |
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 | ||
4bf88530 | 96 | sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band]; |
4b7679a5 | 97 | |
35c347ac | 98 | spin_lock_bh(&sta->rate_ctrl_lock); |
3de805cf SW |
99 | ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista, |
100 | priv_sta); | |
35c347ac | 101 | spin_unlock_bh(&sta->rate_ctrl_lock); |
3de805cf | 102 | rcu_read_unlock(); |
e1936e94 | 103 | set_sta_flag(sta, WLAN_STA_RATE_CONTROL); |
f0706e82 JB |
104 | } |
105 | ||
81cb7623 S |
106 | static inline void rate_control_rate_update(struct ieee80211_local *local, |
107 | struct ieee80211_supported_band *sband, | |
64f68e5d | 108 | struct sta_info *sta, u32 changed) |
81cb7623 S |
109 | { |
110 | struct rate_control_ref *ref = local->rate_ctrl; | |
111 | struct ieee80211_sta *ista = &sta->sta; | |
112 | void *priv_sta = sta->rate_ctrl_priv; | |
3de805cf SW |
113 | struct ieee80211_chanctx_conf *chanctx_conf; |
114 | ||
115 | if (ref && ref->ops->rate_update) { | |
116 | rcu_read_lock(); | |
81cb7623 | 117 | |
3de805cf SW |
118 | chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf); |
119 | if (WARN_ON(!chanctx_conf)) { | |
120 | rcu_read_unlock(); | |
121 | return; | |
122 | } | |
123 | ||
35c347ac | 124 | spin_lock_bh(&sta->rate_ctrl_lock); |
3de805cf SW |
125 | ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def, |
126 | ista, priv_sta, changed); | |
35c347ac | 127 | spin_unlock_bh(&sta->rate_ctrl_lock); |
3de805cf SW |
128 | rcu_read_unlock(); |
129 | } | |
8f727ef3 | 130 | drv_sta_rc_update(local, sta->sdata, &sta->sta, changed); |
81cb7623 | 131 | } |
f0706e82 | 132 | |
f0706e82 | 133 | static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, |
35c347ac | 134 | struct sta_info *sta, gfp_t gfp) |
f0706e82 | 135 | { |
35c347ac JB |
136 | spin_lock_init(&sta->rate_ctrl_lock); |
137 | return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp); | |
f0706e82 JB |
138 | } |
139 | ||
4b7679a5 | 140 | static inline void rate_control_free_sta(struct sta_info *sta) |
f0706e82 | 141 | { |
4b7679a5 JB |
142 | struct rate_control_ref *ref = sta->rate_ctrl; |
143 | struct ieee80211_sta *ista = &sta->sta; | |
144 | void *priv_sta = sta->rate_ctrl_priv; | |
145 | ||
146 | ref->ops->free_sta(ref->priv, ista, priv_sta); | |
f0706e82 JB |
147 | } |
148 | ||
e9f207f0 JB |
149 | static inline void rate_control_add_sta_debugfs(struct sta_info *sta) |
150 | { | |
151 | #ifdef CONFIG_MAC80211_DEBUGFS | |
152 | struct rate_control_ref *ref = sta->rate_ctrl; | |
af65cd96 | 153 | if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) |
e9f207f0 JB |
154 | ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, |
155 | sta->debugfs.dir); | |
156 | #endif | |
157 | } | |
158 | ||
159 | static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) | |
160 | { | |
161 | #ifdef CONFIG_MAC80211_DEBUGFS | |
162 | struct rate_control_ref *ref = sta->rate_ctrl; | |
af65cd96 | 163 | if (ref && ref->ops->remove_sta_debugfs) |
e9f207f0 JB |
164 | ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); |
165 | #endif | |
166 | } | |
167 | ||
209c671d AS |
168 | /* Get a reference to the rate control algorithm. If `name' is NULL, get the |
169 | * first available algorithm. */ | |
ff688089 JB |
170 | int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, |
171 | const char *name); | |
172 | void rate_control_deinitialize(struct ieee80211_local *local); | |
173 | ||
4b475898 JB |
174 | |
175 | /* Rate control algorithms */ | |
cccf129f | 176 | #ifdef CONFIG_MAC80211_RC_MINSTREL |
c1b1203d JP |
177 | int rc80211_minstrel_init(void); |
178 | void rc80211_minstrel_exit(void); | |
cccf129f FF |
179 | #else |
180 | static inline int rc80211_minstrel_init(void) | |
181 | { | |
182 | return 0; | |
183 | } | |
184 | static inline void rc80211_minstrel_exit(void) | |
185 | { | |
186 | } | |
187 | #endif | |
188 | ||
ec8aa669 | 189 | #ifdef CONFIG_MAC80211_RC_MINSTREL_HT |
c1b1203d JP |
190 | int rc80211_minstrel_ht_init(void); |
191 | void rc80211_minstrel_ht_exit(void); | |
ec8aa669 FF |
192 | #else |
193 | static inline int rc80211_minstrel_ht_init(void) | |
194 | { | |
195 | return 0; | |
196 | } | |
197 | static inline void rc80211_minstrel_ht_exit(void) | |
198 | { | |
199 | } | |
200 | #endif | |
201 | ||
cccf129f | 202 | |
f0706e82 | 203 | #endif /* IEEE80211_RATE_H */ |