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