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 22struct rate_control_ref { 23 struct ieee80211_local *local; 24 struct rate_control_ops *ops; 25 void *priv; 26 struct kref kref; 27}; 28 29void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, 30 struct sta_info *sta, 31 struct ieee80211_tx_rate_control *txrc); 32struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); 33void rate_control_put(struct rate_control_ref *ref); 34 35static 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 51static 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 67static 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 81static 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 88static 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 97static 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 107static 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. */ 118int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 119 const char *name); 120void rate_control_deinitialize(struct ieee80211_local *local); 121 122 123/* Rate control algorithms */ 124#ifdef CONFIG_MAC80211_RC_PID 125extern int rc80211_pid_init(void); 126extern void rc80211_pid_exit(void); 127#else 128static inline int rc80211_pid_init(void) 129{ 130 return 0; 131} 132static inline void rc80211_pid_exit(void) 133{ 134} 135#endif 136 137#ifdef CONFIG_MAC80211_RC_MINSTREL 138extern int rc80211_minstrel_init(void); 139extern void rc80211_minstrel_exit(void); 140#else 141static inline int rc80211_minstrel_init(void) 142{ 143 return 0; 144} 145static inline void rc80211_minstrel_exit(void) 146{ 147} 148#endif 149 150#ifdef CONFIG_MAC80211_RC_MINSTREL_HT 151extern int rc80211_minstrel_ht_init(void); 152extern void rc80211_minstrel_ht_exit(void); 153#else 154static inline int rc80211_minstrel_ht_init(void) 155{ 156 return 0; 157} 158static inline void rc80211_minstrel_ht_exit(void) 159{ 160} 161#endif 162 163 164#endif /* IEEE80211_RATE_H */ 165