ac71c691e6
Too frequently people do not have module autoloading enabled or fail to install the rate control module correctly, hence their hardware probing fails due to no rate control algorithm being available. This makes the 'simple' algorithm built into the mac80211 module unless EMBEDDED is enabled in which case it can be disabled (eg. if the wanted driver requires another rate control algorithm.) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
152 lines
4.4 KiB
C
152 lines
4.4 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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/* default 'simple' algorithm */
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extern struct rate_control_ops mac80211_rcsimple;
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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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