mirror of https://gitee.com/openkylin/linux.git
151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/*
|
|
* Copyright 2002-2005, Instant802 Networks, Inc.
|
|
* Copyright 2005, Devicescape Software, Inc.
|
|
* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef IEEE80211_RATE_H
|
|
#define IEEE80211_RATE_H
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/types.h>
|
|
#include <net/mac80211.h>
|
|
#include "ieee80211_i.h"
|
|
#include "sta_info.h"
|
|
|
|
#define RATE_CONTROL_NUM_DOWN 20
|
|
#define RATE_CONTROL_NUM_UP 15
|
|
|
|
|
|
struct rate_control_extra {
|
|
/* values from rate_control_get_rate() to the caller: */
|
|
struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
|
|
* probing */
|
|
struct ieee80211_rate *nonerp;
|
|
|
|
/* parameters from the caller to rate_control_get_rate(): */
|
|
struct ieee80211_hw_mode *mode;
|
|
int mgmt_data; /* this is data frame that is used for management
|
|
* (e.g., IEEE 802.1X EAPOL) */
|
|
u16 ethertype;
|
|
};
|
|
|
|
|
|
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);
|
|
struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
|
|
struct sk_buff *skb,
|
|
struct rate_control_extra *extra);
|
|
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);
|
|
};
|
|
|
|
struct rate_control_ref {
|
|
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);
|
|
|
|
/* 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);
|
|
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 ieee80211_local *local,
|
|
struct net_device *dev,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_tx_status *status)
|
|
{
|
|
struct rate_control_ref *ref = local->rate_ctrl;
|
|
ref->ops->tx_status(ref->priv, dev, skb, status);
|
|
}
|
|
|
|
|
|
static inline struct ieee80211_rate *
|
|
rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
|
|
struct sk_buff *skb, struct rate_control_extra *extra)
|
|
{
|
|
struct rate_control_ref *ref = local->rate_ctrl;
|
|
return ref->ops->get_rate(ref->priv, dev, skb, extra);
|
|
}
|
|
|
|
|
|
static inline void rate_control_rate_init(struct sta_info *sta,
|
|
struct ieee80211_local *local)
|
|
{
|
|
struct rate_control_ref *ref = sta->rate_ctrl;
|
|
ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
|
|
}
|
|
|
|
|
|
static inline void rate_control_clear(struct ieee80211_local *local)
|
|
{
|
|
struct rate_control_ref *ref = local->rate_ctrl;
|
|
ref->ops->clear(ref->priv);
|
|
}
|
|
|
|
static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
|
|
gfp_t gfp)
|
|
{
|
|
return ref->ops->alloc_sta(ref->priv, gfp);
|
|
}
|
|
|
|
static inline void rate_control_free_sta(struct rate_control_ref *ref,
|
|
void *priv)
|
|
{
|
|
ref->ops->free_sta(ref->priv, priv);
|
|
}
|
|
|
|
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)
|
|
ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
|
|
sta->debugfs.dir);
|
|
#endif
|
|
}
|
|
|
|
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)
|
|
ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
|
|
#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);
|
|
|
|
#endif /* IEEE80211_RATE_H */
|