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) 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 } 66 67 static inline void rate_control_rate_update(struct ieee80211_local *local, 68 struct ieee80211_supported_band *sband, 69 struct sta_info *sta, u32 changed, 70 enum nl80211_channel_type oper_chan_type) 71 { 72 struct rate_control_ref *ref = local->rate_ctrl; 73 struct ieee80211_sta *ista = &sta->sta; 74 void *priv_sta = sta->rate_ctrl_priv; 75 76 if (ref && ref->ops->rate_update) 77 ref->ops->rate_update(ref->priv, sband, ista, 78 priv_sta, changed, oper_chan_type); 79 } 80 81 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, 82 struct ieee80211_sta *sta, 83 gfp_t gfp) 84 { 85 return ref->ops->alloc_sta(ref->priv, sta, gfp); 86 } 87 88 static inline void rate_control_free_sta(struct sta_info *sta) 89 { 90 struct rate_control_ref *ref = sta->rate_ctrl; 91 struct ieee80211_sta *ista = &sta->sta; 92 void *priv_sta = sta->rate_ctrl_priv; 93 94 ref->ops->free_sta(ref->priv, ista, priv_sta); 95 } 96 97 static inline void rate_control_add_sta_debugfs(struct sta_info *sta) 98 { 99 #ifdef CONFIG_MAC80211_DEBUGFS 100 struct rate_control_ref *ref = sta->rate_ctrl; 101 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs) 102 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, 103 sta->debugfs.dir); 104 #endif 105 } 106 107 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) 108 { 109 #ifdef CONFIG_MAC80211_DEBUGFS 110 struct rate_control_ref *ref = sta->rate_ctrl; 111 if (ref && ref->ops->remove_sta_debugfs) 112 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); 113 #endif 114 } 115 116 /* Get a reference to the rate control algorithm. If `name' is NULL, get the 117 * first available algorithm. */ 118 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 119 const char *name); 120 void rate_control_deinitialize(struct ieee80211_local *local); 121 122 123 /* Rate control algorithms */ 124 #ifdef CONFIG_MAC80211_RC_PID 125 extern int rc80211_pid_init(void); 126 extern void rc80211_pid_exit(void); 127 #else 128 static inline int rc80211_pid_init(void) 129 { 130 return 0; 131 } 132 static inline void rc80211_pid_exit(void) 133 { 134 } 135 #endif 136 137 #ifdef CONFIG_MAC80211_RC_MINSTREL 138 extern int rc80211_minstrel_init(void); 139 extern void rc80211_minstrel_exit(void); 140 #else 141 static inline int rc80211_minstrel_init(void) 142 { 143 return 0; 144 } 145 static inline void rc80211_minstrel_exit(void) 146 { 147 } 148 #endif 149 150 151 #endif /* IEEE80211_RATE_H */ 152