1 files changed, 104 insertions, 107 deletions

diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index 5b45f33cb76..9aa2a1190a8 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -14,109 +14,113 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/types.h>
-#include <linux/kref.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "sta_info.h"
-
-/* TODO: kdoc */
-struct rate_selection {
-	/* Selected transmission rate */
-	struct ieee80211_rate *rate;
-	/* Non-ERP rate to use if mac80211 decides it cannot use an ERP rate */
-	struct ieee80211_rate *nonerp;
-	/* probe with this rate, or NULL for no probing */
-	struct ieee80211_rate *probe;
-};
-
-struct rate_control_ops {
-	struct module *module;
-	const char *name;
-	void (*tx_status)(void *priv, struct net_device *dev,
-			  struct sk_buff *skb,
-			  struct ieee80211_tx_status *status);
-	void (*get_rate)(void *priv, struct net_device *dev,
-			 struct ieee80211_supported_band *band,
-			 struct sk_buff *skb,
-			 struct rate_selection *sel);
-	void (*rate_init)(void *priv, void *priv_sta,
-			  struct ieee80211_local *local, struct sta_info *sta);
-	void (*clear)(void *priv);
-
-	void *(*alloc)(struct ieee80211_local *local);
-	void (*free)(void *priv);
-	void *(*alloc_sta)(void *priv, gfp_t gfp);
-	void (*free_sta)(void *priv, void *priv_sta);
-
-	int (*add_attrs)(void *priv, struct kobject *kobj);
-	void (*remove_attrs)(void *priv, struct kobject *kobj);
-	void (*add_sta_debugfs)(void *priv, void *priv_sta,
-				struct dentry *dir);
-	void (*remove_sta_debugfs)(void *priv, void *priv_sta);
-};
+#include "driver-ops.h"
 
 struct rate_control_ref {
-	struct rate_control_ops *ops;
+	struct ieee80211_local *local;
+	const struct rate_control_ops *ops;
 	void *priv;
-	struct kref kref;
 };
 
-int ieee80211_rate_control_register(struct rate_control_ops *ops);
-void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
+			   struct sta_info *sta,
+			   struct ieee80211_tx_rate_control *txrc);
 
-/* Get a reference to the rate control algorithm. If `name' is NULL, get the
- * first available algorithm. */
-struct rate_control_ref *rate_control_alloc(const char *name,
-					    struct ieee80211_local *local);
-void rate_control_get_rate(struct net_device *dev,
-			   struct ieee80211_supported_band *sband,
-			   struct sk_buff *skb,
-			   struct rate_selection *sel);
-struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
-void rate_control_put(struct rate_control_ref *ref);
-
-static inline void rate_control_tx_status(struct net_device *dev,
-					  struct sk_buff *skb,
-					  struct ieee80211_tx_status *status)
+static inline void rate_control_tx_status(struct ieee80211_local *local,
+					  struct ieee80211_supported_band *sband,
+					  struct sta_info *sta,
+					  struct sk_buff *skb)
 {
-	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct rate_control_ref *ref = local->rate_ctrl;
+	struct ieee80211_sta *ista = &sta->sta;
+	void *priv_sta = sta->rate_ctrl_priv;
 
-	ref->ops->tx_status(ref->priv, dev, skb, status);
+	if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
+		return;
+
+	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
 }
 
 
-static inline void rate_control_rate_init(struct sta_info *sta,
-					  struct ieee80211_local *local)
+static inline void rate_control_rate_init(struct sta_info *sta)
 {
+	struct ieee80211_local *local = sta->sdata->local;
 	struct rate_control_ref *ref = sta->rate_ctrl;
-	ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
-}
+	struct ieee80211_sta *ista = &sta->sta;
+	void *priv_sta = sta->rate_ctrl_priv;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_chanctx_conf *chanctx_conf;
+
+	ieee80211_sta_set_rx_nss(sta);
+
+	if (!ref)
+		return;
+
+	rcu_read_lock();
+
+	chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
+	if (WARN_ON(!chanctx_conf)) {
+		rcu_read_unlock();
+		return;
+	}
 
+	sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
 
-static inline void rate_control_clear(struct ieee80211_local *local)
+	ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista,
+			    priv_sta);
+	rcu_read_unlock();
+	set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
+}
+
+static inline void rate_control_rate_update(struct ieee80211_local *local,
+				    struct ieee80211_supported_band *sband,
+				    struct sta_info *sta, u32 changed)
 {
 	struct rate_control_ref *ref = local->rate_ctrl;
-	ref->ops->clear(ref->priv);
+	struct ieee80211_sta *ista = &sta->sta;
+	void *priv_sta = sta->rate_ctrl_priv;
+	struct ieee80211_chanctx_conf *chanctx_conf;
+
+	if (ref && ref->ops->rate_update) {
+		rcu_read_lock();
+
+		chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
+		if (WARN_ON(!chanctx_conf)) {
+			rcu_read_unlock();
+			return;
+		}
+
+		ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def,
+				      ista, priv_sta, changed);
+		rcu_read_unlock();
+	}
+	drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
 }
 
 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
+					   struct ieee80211_sta *sta,
 					   gfp_t gfp)
 {
-	return ref->ops->alloc_sta(ref->priv, gfp);
+	return ref->ops->alloc_sta(ref->priv, sta, gfp);
 }
 
-static inline void rate_control_free_sta(struct rate_control_ref *ref,
-					 void *priv)
+static inline void rate_control_free_sta(struct sta_info *sta)
 {
-	ref->ops->free_sta(ref->priv, priv);
+	struct rate_control_ref *ref = sta->rate_ctrl;
+	struct ieee80211_sta *ista = &sta->sta;
+	void *priv_sta = sta->rate_ctrl_priv;
+
+	ref->ops->free_sta(ref->priv, ista, priv_sta);
 }
 
 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
 {
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct rate_control_ref *ref = sta->rate_ctrl;
-	if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
+	if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
 		ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
 					  sta->debugfs.dir);
 #endif
@@ -126,64 +130,57 @@ static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
 {
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct rate_control_ref *ref = sta->rate_ctrl;
-	if (ref->ops->remove_sta_debugfs)
+	if (ref && ref->ops->remove_sta_debugfs)
 		ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
 #endif
 }
 
-static inline int rate_supported(struct sta_info *sta,
-				 enum ieee80211_band band,
-				 int index)
+/* Get a reference to the rate control algorithm. If `name' is NULL, get the
+ * first available algorithm. */
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+				 const char *name);
+void rate_control_deinitialize(struct ieee80211_local *local);
+
+
+/* Rate control algorithms */
+#ifdef CONFIG_MAC80211_RC_PID
+int rc80211_pid_init(void);
+void rc80211_pid_exit(void);
+#else
+static inline int rc80211_pid_init(void)
 {
-	return (sta == NULL || sta->supp_rates[band] & BIT(index));
+	return 0;
 }
-
-static inline int
-rate_lowest_index(struct ieee80211_local *local,
-		  struct ieee80211_supported_band *sband,
-		  struct sta_info *sta)
+static inline void rc80211_pid_exit(void)
 {
-	int i;
-
-	for (i = 0; i < sband->n_bitrates; i++)
-		if (rate_supported(sta, sband->band, i))
-			return i;
-
-	/* warn when we cannot find a rate. */
-	WARN_ON(1);
+}
+#endif
 
+#ifdef CONFIG_MAC80211_RC_MINSTREL
+int rc80211_minstrel_init(void);
+void rc80211_minstrel_exit(void);
+#else
+static inline int rc80211_minstrel_init(void)
+{
 	return 0;
 }
-
-static inline struct ieee80211_rate *
-rate_lowest(struct ieee80211_local *local,
-	    struct ieee80211_supported_band *sband,
-	    struct sta_info *sta)
+static inline void rc80211_minstrel_exit(void)
 {
-	return &sband->bitrates[rate_lowest_index(local, sband, sta)];
 }
+#endif
 
-
-/* functions for rate control related to a device */
-int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
-				 const char *name);
-void rate_control_deinitialize(struct ieee80211_local *local);
-
-
-/* Rate control algorithms */
-#if defined(RC80211_PID_COMPILE) || \
-	(defined(CONFIG_MAC80211_RC_PID) && \
-	 !defined(CONFIG_MAC80211_RC_PID_MODULE))
-extern int rc80211_pid_init(void);
-extern void rc80211_pid_exit(void);
+#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
+int rc80211_minstrel_ht_init(void);
+void rc80211_minstrel_ht_exit(void);
 #else
-static inline int rc80211_pid_init(void)
+static inline int rc80211_minstrel_ht_init(void)
 {
 	return 0;
 }
-static inline void rc80211_pid_exit(void)
+static inline void rc80211_minstrel_ht_exit(void)
 {
 }
 #endif
 
+
 #endif /* IEEE80211_RATE_H */