187 lines
4.7 KiB
C
187 lines
4.7 KiB
C
/*
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* Copyright 2002-2005, Instant802 Networks, Inc.
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* Copyright 2005, Devicescape Software, Inc.
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* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef IEEE80211_RATE_H
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#define IEEE80211_RATE_H
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/types.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "sta_info.h"
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#include "driver-ops.h"
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struct rate_control_ref {
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struct ieee80211_local *local;
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struct rate_control_ops *ops;
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void *priv;
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};
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void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
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struct sta_info *sta,
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struct ieee80211_tx_rate_control *txrc);
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static inline void rate_control_tx_status(struct ieee80211_local *local,
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struct ieee80211_supported_band *sband,
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struct sta_info *sta,
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struct sk_buff *skb)
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{
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struct rate_control_ref *ref = local->rate_ctrl;
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struct ieee80211_sta *ista = &sta->sta;
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void *priv_sta = sta->rate_ctrl_priv;
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if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
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return;
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ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
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}
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static inline void rate_control_rate_init(struct sta_info *sta)
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{
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struct ieee80211_local *local = sta->sdata->local;
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struct rate_control_ref *ref = sta->rate_ctrl;
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struct ieee80211_sta *ista = &sta->sta;
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void *priv_sta = sta->rate_ctrl_priv;
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struct ieee80211_supported_band *sband;
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struct ieee80211_chanctx_conf *chanctx_conf;
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if (!ref)
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return;
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rcu_read_lock();
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chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
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if (WARN_ON(!chanctx_conf)) {
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rcu_read_unlock();
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return;
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}
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sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
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ieee80211_sta_set_rx_nss(sta);
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ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista,
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priv_sta);
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rcu_read_unlock();
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set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
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}
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static inline void rate_control_rate_update(struct ieee80211_local *local,
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struct ieee80211_supported_band *sband,
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struct sta_info *sta, u32 changed)
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{
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struct rate_control_ref *ref = local->rate_ctrl;
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struct ieee80211_sta *ista = &sta->sta;
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void *priv_sta = sta->rate_ctrl_priv;
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struct ieee80211_chanctx_conf *chanctx_conf;
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if (ref && ref->ops->rate_update) {
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rcu_read_lock();
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chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
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if (WARN_ON(!chanctx_conf)) {
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rcu_read_unlock();
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return;
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}
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ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def,
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ista, priv_sta, changed);
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rcu_read_unlock();
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}
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drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
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}
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static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
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struct ieee80211_sta *sta,
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gfp_t gfp)
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{
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return ref->ops->alloc_sta(ref->priv, sta, gfp);
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}
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static inline void rate_control_free_sta(struct sta_info *sta)
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{
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struct rate_control_ref *ref = sta->rate_ctrl;
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struct ieee80211_sta *ista = &sta->sta;
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void *priv_sta = sta->rate_ctrl_priv;
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ref->ops->free_sta(ref->priv, ista, priv_sta);
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}
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static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
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{
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#ifdef CONFIG_MAC80211_DEBUGFS
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struct rate_control_ref *ref = sta->rate_ctrl;
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if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
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ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
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sta->debugfs.dir);
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#endif
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}
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static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
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{
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#ifdef CONFIG_MAC80211_DEBUGFS
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struct rate_control_ref *ref = sta->rate_ctrl;
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if (ref && ref->ops->remove_sta_debugfs)
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ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
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#endif
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}
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/* Get a reference to the rate control algorithm. If `name' is NULL, get the
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* first available algorithm. */
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int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
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const char *name);
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void rate_control_deinitialize(struct ieee80211_local *local);
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/* Rate control algorithms */
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#ifdef CONFIG_MAC80211_RC_PID
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extern int rc80211_pid_init(void);
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extern void rc80211_pid_exit(void);
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#else
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static inline int rc80211_pid_init(void)
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{
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return 0;
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}
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static inline void rc80211_pid_exit(void)
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{
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}
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#endif
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#ifdef CONFIG_MAC80211_RC_MINSTREL
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extern int rc80211_minstrel_init(void);
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extern void rc80211_minstrel_exit(void);
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#else
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static inline int rc80211_minstrel_init(void)
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{
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return 0;
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}
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static inline void rc80211_minstrel_exit(void)
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{
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}
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#endif
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#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
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extern int rc80211_minstrel_ht_init(void);
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extern void rc80211_minstrel_ht_exit(void);
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#else
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static inline int rc80211_minstrel_ht_init(void)
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{
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return 0;
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}
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static inline void rc80211_minstrel_ht_exit(void)
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{
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}
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#endif
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#endif /* IEEE80211_RATE_H */
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