149 строки
4.3 KiB
C
149 строки
4.3 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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#define RATE_CONTROL_NUM_DOWN 20
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#define RATE_CONTROL_NUM_UP 15
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struct rate_control_extra {
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/* values from rate_control_get_rate() to the caller: */
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struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
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* probing */
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struct ieee80211_rate *nonerp;
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/* parameters from the caller to rate_control_get_rate(): */
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struct ieee80211_hw_mode *mode;
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u16 ethertype;
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};
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struct rate_control_ops {
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struct module *module;
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const char *name;
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void (*tx_status)(void *priv, struct net_device *dev,
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struct sk_buff *skb,
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struct ieee80211_tx_status *status);
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struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
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struct sk_buff *skb,
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struct rate_control_extra *extra);
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void (*rate_init)(void *priv, void *priv_sta,
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struct ieee80211_local *local, struct sta_info *sta);
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void (*clear)(void *priv);
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void *(*alloc)(struct ieee80211_local *local);
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void (*free)(void *priv);
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void *(*alloc_sta)(void *priv, gfp_t gfp);
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void (*free_sta)(void *priv, void *priv_sta);
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int (*add_attrs)(void *priv, struct kobject *kobj);
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void (*remove_attrs)(void *priv, struct kobject *kobj);
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void (*add_sta_debugfs)(void *priv, void *priv_sta,
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struct dentry *dir);
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void (*remove_sta_debugfs)(void *priv, void *priv_sta);
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};
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struct rate_control_ref {
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struct rate_control_ops *ops;
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void *priv;
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struct kref kref;
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};
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int ieee80211_rate_control_register(struct rate_control_ops *ops);
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void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
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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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struct rate_control_ref *rate_control_alloc(const char *name,
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struct ieee80211_local *local);
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struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
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void rate_control_put(struct rate_control_ref *ref);
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static inline void rate_control_tx_status(struct ieee80211_local *local,
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struct net_device *dev,
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struct sk_buff *skb,
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struct ieee80211_tx_status *status)
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{
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struct rate_control_ref *ref = local->rate_ctrl;
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ref->ops->tx_status(ref->priv, dev, skb, status);
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}
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static inline struct ieee80211_rate *
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rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
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struct sk_buff *skb, struct rate_control_extra *extra)
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{
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struct rate_control_ref *ref = local->rate_ctrl;
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return ref->ops->get_rate(ref->priv, dev, skb, extra);
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}
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static inline void rate_control_rate_init(struct sta_info *sta,
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struct ieee80211_local *local)
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{
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struct rate_control_ref *ref = sta->rate_ctrl;
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ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
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}
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static inline void rate_control_clear(struct ieee80211_local *local)
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{
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struct rate_control_ref *ref = local->rate_ctrl;
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ref->ops->clear(ref->priv);
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}
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static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
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gfp_t gfp)
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{
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return ref->ops->alloc_sta(ref->priv, gfp);
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}
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static inline void rate_control_free_sta(struct rate_control_ref *ref,
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void *priv)
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{
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ref->ops->free_sta(ref->priv, priv);
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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 (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->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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/* functions for rate control related to a device */
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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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#endif /* IEEE80211_RATE_H */
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