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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 | ||
f684565e FF |
45 | if (ref->ops->tx_status) |
46 | ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); | |
47 | else | |
48 | ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info); | |
f0706e82 JB |
49 | } |
50 | ||
f027c2ac FF |
51 | static inline void |
52 | rate_control_tx_status_noskb(struct ieee80211_local *local, | |
53 | struct ieee80211_supported_band *sband, | |
54 | struct sta_info *sta, | |
55 | struct ieee80211_tx_info *info) | |
56 | { | |
57 | struct rate_control_ref *ref = local->rate_ctrl; | |
58 | struct ieee80211_sta *ista = &sta->sta; | |
59 | void *priv_sta = sta->rate_ctrl_priv; | |
60 | ||
61 | if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) | |
62 | return; | |
63 | ||
64 | if (WARN_ON_ONCE(!ref->ops->tx_status_noskb)) | |
65 | return; | |
66 | ||
67 | ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info); | |
68 | } | |
f0706e82 | 69 | |
4b7679a5 | 70 | static inline void rate_control_rate_init(struct sta_info *sta) |
f0706e82 | 71 | { |
4b7679a5 | 72 | struct ieee80211_local *local = sta->sdata->local; |
f0706e82 | 73 | struct rate_control_ref *ref = sta->rate_ctrl; |
4b7679a5 JB |
74 | struct ieee80211_sta *ista = &sta->sta; |
75 | void *priv_sta = sta->rate_ctrl_priv; | |
76 | struct ieee80211_supported_band *sband; | |
55de908a | 77 | struct ieee80211_chanctx_conf *chanctx_conf; |
4b7679a5 | 78 | |
ddcc347b MK |
79 | ieee80211_sta_set_rx_nss(sta); |
80 | ||
af65cd96 JB |
81 | if (!ref) |
82 | return; | |
83 | ||
55de908a JB |
84 | rcu_read_lock(); |
85 | ||
86 | chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf); | |
87 | if (WARN_ON(!chanctx_conf)) { | |
88 | rcu_read_unlock(); | |
89 | return; | |
90 | } | |
91 | ||
4bf88530 | 92 | sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band]; |
4b7679a5 | 93 | |
3de805cf SW |
94 | ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista, |
95 | priv_sta); | |
96 | rcu_read_unlock(); | |
e1936e94 | 97 | set_sta_flag(sta, WLAN_STA_RATE_CONTROL); |
f0706e82 JB |
98 | } |
99 | ||
81cb7623 S |
100 | static inline void rate_control_rate_update(struct ieee80211_local *local, |
101 | struct ieee80211_supported_band *sband, | |
64f68e5d | 102 | struct sta_info *sta, u32 changed) |
81cb7623 S |
103 | { |
104 | struct rate_control_ref *ref = local->rate_ctrl; | |
105 | struct ieee80211_sta *ista = &sta->sta; | |
106 | void *priv_sta = sta->rate_ctrl_priv; | |
3de805cf SW |
107 | struct ieee80211_chanctx_conf *chanctx_conf; |
108 | ||
109 | if (ref && ref->ops->rate_update) { | |
110 | rcu_read_lock(); | |
81cb7623 | 111 | |
3de805cf SW |
112 | chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf); |
113 | if (WARN_ON(!chanctx_conf)) { | |
114 | rcu_read_unlock(); | |
115 | return; | |
116 | } | |
117 | ||
118 | ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def, | |
119 | ista, priv_sta, changed); | |
120 | rcu_read_unlock(); | |
121 | } | |
8f727ef3 | 122 | drv_sta_rc_update(local, sta->sdata, &sta->sta, changed); |
81cb7623 | 123 | } |
f0706e82 | 124 | |
f0706e82 | 125 | static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, |
4b7679a5 | 126 | struct ieee80211_sta *sta, |
f0706e82 JB |
127 | gfp_t gfp) |
128 | { | |
4b7679a5 | 129 | return ref->ops->alloc_sta(ref->priv, sta, gfp); |
f0706e82 JB |
130 | } |
131 | ||
4b7679a5 | 132 | static inline void rate_control_free_sta(struct sta_info *sta) |
f0706e82 | 133 | { |
4b7679a5 JB |
134 | struct rate_control_ref *ref = sta->rate_ctrl; |
135 | struct ieee80211_sta *ista = &sta->sta; | |
136 | void *priv_sta = sta->rate_ctrl_priv; | |
137 | ||
138 | ref->ops->free_sta(ref->priv, ista, priv_sta); | |
f0706e82 JB |
139 | } |
140 | ||
e9f207f0 JB |
141 | static inline void rate_control_add_sta_debugfs(struct sta_info *sta) |
142 | { | |
143 | #ifdef CONFIG_MAC80211_DEBUGFS | |
144 | struct rate_control_ref *ref = sta->rate_ctrl; | |
af65cd96 | 145 | if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) |
e9f207f0 JB |
146 | ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, |
147 | sta->debugfs.dir); | |
148 | #endif | |
149 | } | |
150 | ||
151 | static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) | |
152 | { | |
153 | #ifdef CONFIG_MAC80211_DEBUGFS | |
154 | struct rate_control_ref *ref = sta->rate_ctrl; | |
af65cd96 | 155 | if (ref && ref->ops->remove_sta_debugfs) |
e9f207f0 JB |
156 | ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); |
157 | #endif | |
158 | } | |
159 | ||
209c671d AS |
160 | /* Get a reference to the rate control algorithm. If `name' is NULL, get the |
161 | * first available algorithm. */ | |
ff688089 JB |
162 | int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, |
163 | const char *name); | |
164 | void rate_control_deinitialize(struct ieee80211_local *local); | |
165 | ||
4b475898 JB |
166 | |
167 | /* Rate control algorithms */ | |
cccf129f | 168 | #ifdef CONFIG_MAC80211_RC_MINSTREL |
c1b1203d JP |
169 | int rc80211_minstrel_init(void); |
170 | void rc80211_minstrel_exit(void); | |
cccf129f FF |
171 | #else |
172 | static inline int rc80211_minstrel_init(void) | |
173 | { | |
174 | return 0; | |
175 | } | |
176 | static inline void rc80211_minstrel_exit(void) | |
177 | { | |
178 | } | |
179 | #endif | |
180 | ||
ec8aa669 | 181 | #ifdef CONFIG_MAC80211_RC_MINSTREL_HT |
c1b1203d JP |
182 | int rc80211_minstrel_ht_init(void); |
183 | void rc80211_minstrel_ht_exit(void); | |
ec8aa669 FF |
184 | #else |
185 | static inline int rc80211_minstrel_ht_init(void) | |
186 | { | |
187 | return 0; | |
188 | } | |
189 | static inline void rc80211_minstrel_ht_exit(void) | |
190 | { | |
191 | } | |
192 | #endif | |
193 | ||
cccf129f | 194 | |
f0706e82 | 195 | #endif /* IEEE80211_RATE_H */ |