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 <linux/kref.h> 18 #include <net/mac80211.h> 19 #include "ieee80211_i.h" 20 #include "sta_info.h" 21 22 struct rate_control_ref { 23 struct ieee80211_local *local; 24 struct rate_control_ops *ops; 25 void *priv; 26 struct kref kref; 27 }; 28 29 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, 30 struct sta_info *sta, 31 struct ieee80211_tx_rate_control *txrc); 32 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); 33 void rate_control_put(struct rate_control_ref *ref); 34 35 static inline void rate_control_tx_status(struct ieee80211_local *local, 36 struct ieee80211_supported_band *sband, 37 struct sta_info *sta, 38 struct sk_buff *skb) 39 { 40 struct rate_control_ref *ref = local->rate_ctrl; 41 struct ieee80211_sta *ista = &sta->sta; 42 void *priv_sta = sta->rate_ctrl_priv; 43 44 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 45 return; 46 47 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); 48 } 49 50 51 static inline void rate_control_rate_init(struct sta_info *sta) 52 { 53 struct ieee80211_local *local = sta->sdata->local; 54 struct rate_control_ref *ref = sta->rate_ctrl; 55 struct ieee80211_sta *ista = &sta->sta; 56 void *priv_sta = sta->rate_ctrl_priv; 57 struct ieee80211_supported_band *sband; 58 59 if (!ref) 60 return; 61 62 sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 63 64 ref->ops->rate_init(ref->priv, sband, ista, priv_sta); 65 set_sta_flag(sta, WLAN_STA_RATE_CONTROL); 66 } 67 68 static inline void rate_control_rate_update(struct ieee80211_local *local, 69 struct ieee80211_supported_band *sband, 70 struct sta_info *sta, u32 changed, 71 enum nl80211_channel_type oper_chan_type) 72 { 73 struct rate_control_ref *ref = local->rate_ctrl; 74 struct ieee80211_sta *ista = &sta->sta; 75 void *priv_sta = sta->rate_ctrl_priv; 76 77 if (ref && ref->ops->rate_update) 78 ref->ops->rate_update(ref->priv, sband, ista, 79 priv_sta, changed, oper_chan_type); 80 } 81 82 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, 83 struct ieee80211_sta *sta, 84 gfp_t gfp) 85 { 86 return ref->ops->alloc_sta(ref->priv, sta, gfp); 87 } 88 89 static inline void rate_control_free_sta(struct sta_info *sta) 90 { 91 struct rate_control_ref *ref = sta->rate_ctrl; 92 struct ieee80211_sta *ista = &sta->sta; 93 void *priv_sta = sta->rate_ctrl_priv; 94 95 ref->ops->free_sta(ref->priv, ista, priv_sta); 96 } 97 98 static inline void rate_control_add_sta_debugfs(struct sta_info *sta) 99 { 100 #ifdef CONFIG_MAC80211_DEBUGFS 101 struct rate_control_ref *ref = sta->rate_ctrl; 102 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) 103 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, 104 sta->debugfs.dir); 105 #endif 106 } 107 108 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) 109 { 110 #ifdef CONFIG_MAC80211_DEBUGFS 111 struct rate_control_ref *ref = sta->rate_ctrl; 112 if (ref && ref->ops->remove_sta_debugfs) 113 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); 114 #endif 115 } 116 117 /* Get a reference to the rate control algorithm. If `name' is NULL, get the 118 * first available algorithm. */ 119 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 120 const char *name); 121 void rate_control_deinitialize(struct ieee80211_local *local); 122 123 124 /* Rate control algorithms */ 125 #ifdef CONFIG_MAC80211_RC_PID 126 extern int rc80211_pid_init(void); 127 extern void rc80211_pid_exit(void); 128 #else 129 static inline int rc80211_pid_init(void) 130 { 131 return 0; 132 } 133 static inline void rc80211_pid_exit(void) 134 { 135 } 136 #endif 137 138 #ifdef CONFIG_MAC80211_RC_MINSTREL 139 extern int rc80211_minstrel_init(void); 140 extern void rc80211_minstrel_exit(void); 141 #else 142 static inline int rc80211_minstrel_init(void) 143 { 144 return 0; 145 } 146 static inline void rc80211_minstrel_exit(void) 147 { 148 } 149 #endif 150 151 #ifdef CONFIG_MAC80211_RC_MINSTREL_HT 152 extern int rc80211_minstrel_ht_init(void); 153 extern void rc80211_minstrel_ht_exit(void); 154 #else 155 static inline int rc80211_minstrel_ht_init(void) 156 { 157 return 0; 158 } 159 static inline void rc80211_minstrel_ht_exit(void) 160 { 161 } 162 #endif 163 164 165 #endif /* IEEE80211_RATE_H */ 166