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