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 /* Get a reference to the rate control algorithm. If `name' is NULL, get the 30 * first available algorithm. */ 31 struct rate_control_ref *rate_control_alloc(const char *name, 32 struct ieee80211_local *local); 33 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, 34 struct sta_info *sta, 35 struct ieee80211_tx_rate_control *txrc); 36 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); 37 void rate_control_put(struct rate_control_ref *ref); 38 39 static inline void rate_control_tx_status(struct ieee80211_local *local, 40 struct ieee80211_supported_band *sband, 41 struct sta_info *sta, 42 struct sk_buff *skb) 43 { 44 struct rate_control_ref *ref = local->rate_ctrl; 45 struct ieee80211_sta *ista = &sta->sta; 46 void *priv_sta = sta->rate_ctrl_priv; 47 48 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); 49 } 50 51 52 static inline void rate_control_rate_init(struct sta_info *sta) 53 { 54 struct ieee80211_local *local = sta->sdata->local; 55 struct rate_control_ref *ref = sta->rate_ctrl; 56 struct ieee80211_sta *ista = &sta->sta; 57 void *priv_sta = sta->rate_ctrl_priv; 58 struct ieee80211_supported_band *sband; 59 60 sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 61 62 ref->ops->rate_init(ref->priv, sband, ista, priv_sta); 63 } 64 65 66 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, 67 struct ieee80211_sta *sta, 68 gfp_t gfp) 69 { 70 return ref->ops->alloc_sta(ref->priv, sta, gfp); 71 } 72 73 static inline void rate_control_free_sta(struct sta_info *sta) 74 { 75 struct rate_control_ref *ref = sta->rate_ctrl; 76 struct ieee80211_sta *ista = &sta->sta; 77 void *priv_sta = sta->rate_ctrl_priv; 78 79 ref->ops->free_sta(ref->priv, ista, priv_sta); 80 } 81 82 static inline void rate_control_add_sta_debugfs(struct sta_info *sta) 83 { 84 #ifdef CONFIG_MAC80211_DEBUGFS 85 struct rate_control_ref *ref = sta->rate_ctrl; 86 if (sta->debugfs.dir && ref->ops->add_sta_debugfs) 87 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, 88 sta->debugfs.dir); 89 #endif 90 } 91 92 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) 93 { 94 #ifdef CONFIG_MAC80211_DEBUGFS 95 struct rate_control_ref *ref = sta->rate_ctrl; 96 if (ref->ops->remove_sta_debugfs) 97 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); 98 #endif 99 } 100 101 /* functions for rate control related to a device */ 102 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 103 const char *name); 104 void rate_control_deinitialize(struct ieee80211_local *local); 105 106 107 /* Rate control algorithms */ 108 #ifdef CONFIG_MAC80211_RC_PID 109 extern int rc80211_pid_init(void); 110 extern void rc80211_pid_exit(void); 111 #else 112 static inline int rc80211_pid_init(void) 113 { 114 return 0; 115 } 116 static inline void rc80211_pid_exit(void) 117 { 118 } 119 #endif 120 121 #ifdef CONFIG_MAC80211_RC_MINSTREL 122 extern int rc80211_minstrel_init(void); 123 extern void rc80211_minstrel_exit(void); 124 #else 125 static inline int rc80211_minstrel_init(void) 126 { 127 return 0; 128 } 129 static inline void rc80211_minstrel_exit(void) 130 { 131 } 132 #endif 133 134 135 #endif /* IEEE80211_RATE_H */ 136