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 ieee80211_supported_band *sband, 35 struct sta_info *sta, struct sk_buff *skb, 36 struct rate_selection *sel); 37 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); 38 void rate_control_put(struct rate_control_ref *ref); 39 40 static inline void rate_control_tx_status(struct ieee80211_local *local, 41 struct ieee80211_supported_band *sband, 42 struct sta_info *sta, 43 struct sk_buff *skb) 44 { 45 struct rate_control_ref *ref = local->rate_ctrl; 46 struct ieee80211_sta *ista = &sta->sta; 47 void *priv_sta = sta->rate_ctrl_priv; 48 49 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); 50 } 51 52 53 static inline void rate_control_rate_init(struct sta_info *sta) 54 { 55 struct ieee80211_local *local = sta->sdata->local; 56 struct rate_control_ref *ref = sta->rate_ctrl; 57 struct ieee80211_sta *ista = &sta->sta; 58 void *priv_sta = sta->rate_ctrl_priv; 59 struct ieee80211_supported_band *sband; 60 61 sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 62 63 ref->ops->rate_init(ref->priv, sband, ista, priv_sta); 64 } 65 66 67 static inline void rate_control_clear(struct ieee80211_local *local) 68 { 69 struct rate_control_ref *ref = local->rate_ctrl; 70 ref->ops->clear(ref->priv); 71 } 72 73 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, 74 struct ieee80211_sta *sta, 75 gfp_t gfp) 76 { 77 return ref->ops->alloc_sta(ref->priv, sta, gfp); 78 } 79 80 static inline void rate_control_free_sta(struct sta_info *sta) 81 { 82 struct rate_control_ref *ref = sta->rate_ctrl; 83 struct ieee80211_sta *ista = &sta->sta; 84 void *priv_sta = sta->rate_ctrl_priv; 85 86 ref->ops->free_sta(ref->priv, ista, priv_sta); 87 } 88 89 static inline void rate_control_add_sta_debugfs(struct sta_info *sta) 90 { 91 #ifdef CONFIG_MAC80211_DEBUGFS 92 struct rate_control_ref *ref = sta->rate_ctrl; 93 if (sta->debugfs.dir && ref->ops->add_sta_debugfs) 94 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, 95 sta->debugfs.dir); 96 #endif 97 } 98 99 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) 100 { 101 #ifdef CONFIG_MAC80211_DEBUGFS 102 struct rate_control_ref *ref = sta->rate_ctrl; 103 if (ref->ops->remove_sta_debugfs) 104 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); 105 #endif 106 } 107 108 /* functions for rate control related to a device */ 109 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 110 const char *name); 111 void rate_control_deinitialize(struct ieee80211_local *local); 112 113 114 /* Rate control algorithms */ 115 #ifdef CONFIG_MAC80211_RC_PID 116 extern int rc80211_pid_init(void); 117 extern void rc80211_pid_exit(void); 118 #else 119 static inline int rc80211_pid_init(void) 120 { 121 return 0; 122 } 123 static inline void rc80211_pid_exit(void) 124 { 125 } 126 #endif 127 128 #ifdef CONFIG_MAC80211_RC_MINSTREL 129 extern int rc80211_minstrel_init(void); 130 extern void rc80211_minstrel_exit(void); 131 #else 132 static inline int rc80211_minstrel_init(void) 133 { 134 return 0; 135 } 136 static inline void rc80211_minstrel_exit(void) 137 { 138 } 139 #endif 140 141 142 #endif /* IEEE80211_RATE_H */ 143