Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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" |
Johannes Berg | 8f727ef | 2012-03-30 08:43:32 +0200 | [diff] [blame] | 20 | #include "driver-ops.h" |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 21 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | struct rate_control_ref { |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 23 | struct ieee80211_local *local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 24 | struct rate_control_ops *ops; |
| 25 | void *priv; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 26 | }; |
| 27 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 28 | void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 29 | struct sta_info *sta, |
| 30 | struct ieee80211_tx_rate_control *txrc); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 31 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 32 | static inline void rate_control_tx_status(struct ieee80211_local *local, |
| 33 | struct ieee80211_supported_band *sband, |
| 34 | struct sta_info *sta, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 35 | struct sk_buff *skb) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 36 | { |
| 37 | struct rate_control_ref *ref = local->rate_ctrl; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 38 | struct ieee80211_sta *ista = &sta->sta; |
| 39 | void *priv_sta = sta->rate_ctrl_priv; |
Vasanthakumar | 3c38405 | 2010-02-01 18:49:07 +0530 | [diff] [blame] | 40 | |
Felix Fietkau | 2cfc6fc | 2012-02-08 19:17:11 +0100 | [diff] [blame] | 41 | if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) |
Vasanthakumar | 3c38405 | 2010-02-01 18:49:07 +0530 | [diff] [blame] | 42 | return; |
| 43 | |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 44 | ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 48 | static inline void rate_control_rate_init(struct sta_info *sta) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 49 | { |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 50 | struct ieee80211_local *local = sta->sdata->local; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 51 | struct rate_control_ref *ref = sta->rate_ctrl; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 52 | struct ieee80211_sta *ista = &sta->sta; |
| 53 | void *priv_sta = sta->rate_ctrl_priv; |
| 54 | struct ieee80211_supported_band *sband; |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 55 | struct ieee80211_chanctx_conf *chanctx_conf; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 56 | |
Michal Kazior | ddcc347 | 2013-12-02 11:54:07 +0100 | [diff] [blame] | 57 | ieee80211_sta_set_rx_nss(sta); |
| 58 | |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 59 | if (!ref) |
| 60 | return; |
| 61 | |
Johannes Berg | 55de908 | 2012-07-26 17:24:39 +0200 | [diff] [blame] | 62 | rcu_read_lock(); |
| 63 | |
| 64 | chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf); |
| 65 | if (WARN_ON(!chanctx_conf)) { |
| 66 | rcu_read_unlock(); |
| 67 | return; |
| 68 | } |
| 69 | |
Johannes Berg | 4bf8853 | 2012-11-09 11:39:59 +0100 | [diff] [blame] | 70 | sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band]; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 71 | |
Simon Wunderlich | 3de805c | 2013-07-08 16:55:50 +0200 | [diff] [blame] | 72 | ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista, |
| 73 | priv_sta); |
| 74 | rcu_read_unlock(); |
Johannes Berg | e1936e9 | 2012-01-20 13:55:23 +0100 | [diff] [blame] | 75 | set_sta_flag(sta, WLAN_STA_RATE_CONTROL); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 76 | } |
| 77 | |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 78 | static inline void rate_control_rate_update(struct ieee80211_local *local, |
| 79 | struct ieee80211_supported_band *sband, |
Johannes Berg | 64f68e5 | 2012-03-28 10:58:37 +0200 | [diff] [blame] | 80 | struct sta_info *sta, u32 changed) |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 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; |
Simon Wunderlich | 3de805c | 2013-07-08 16:55:50 +0200 | [diff] [blame] | 85 | struct ieee80211_chanctx_conf *chanctx_conf; |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 86 | |
Simon Wunderlich | 3de805c | 2013-07-08 16:55:50 +0200 | [diff] [blame] | 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 | } |
Johannes Berg | 8f727ef | 2012-03-30 08:43:32 +0200 | [diff] [blame] | 100 | drv_sta_rc_update(local, sta->sdata, &sta->sta, changed); |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 101 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 102 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 103 | static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 104 | struct ieee80211_sta *sta, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 105 | gfp_t gfp) |
| 106 | { |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 107 | return ref->ops->alloc_sta(ref->priv, sta, gfp); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 110 | static inline void rate_control_free_sta(struct sta_info *sta) |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 111 | { |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 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); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 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; |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 123 | if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 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; |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 133 | if (ref && ref->ops->remove_sta_debugfs) |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 134 | ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); |
| 135 | #endif |
| 136 | } |
| 137 | |
Andres Salomon | 209c671 | 2010-02-07 21:47:50 -0500 | [diff] [blame] | 138 | /* Get a reference to the rate control algorithm. If `name' is NULL, get the |
| 139 | * first available algorithm. */ |
Johannes Berg | ff68808 | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 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 | |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 144 | |
| 145 | /* Rate control algorithms */ |
Adrian Bunk | e5f5e73 | 2008-06-26 13:38:13 +0300 | [diff] [blame] | 146 | #ifdef CONFIG_MAC80211_RC_PID |
Joe Perches | c1b1203 | 2013-10-18 13:48:25 -0700 | [diff] [blame] | 147 | int rc80211_pid_init(void); |
| 148 | void rc80211_pid_exit(void); |
Johannes Berg | 4b47589 | 2008-01-02 15:17:03 +0100 | [diff] [blame] | 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 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 159 | #ifdef CONFIG_MAC80211_RC_MINSTREL |
Joe Perches | c1b1203 | 2013-10-18 13:48:25 -0700 | [diff] [blame] | 160 | int rc80211_minstrel_init(void); |
| 161 | void rc80211_minstrel_exit(void); |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 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 | |
Felix Fietkau | ec8aa66 | 2010-05-13 16:48:03 +0200 | [diff] [blame] | 172 | #ifdef CONFIG_MAC80211_RC_MINSTREL_HT |
Joe Perches | c1b1203 | 2013-10-18 13:48:25 -0700 | [diff] [blame] | 173 | int rc80211_minstrel_ht_init(void); |
| 174 | void rc80211_minstrel_ht_exit(void); |
Felix Fietkau | ec8aa66 | 2010-05-13 16:48:03 +0200 | [diff] [blame] | 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 | |
Felix Fietkau | cccf129 | 2008-10-05 18:07:45 +0200 | [diff] [blame] | 185 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 186 | #endif /* IEEE80211_RATE_H */ |