2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #ifndef IEEE80211_RATE_H
12 #define IEEE80211_RATE_H
14 #include <linux/netdevice.h>
15 #include <linux/skbuff.h>
16 #include <linux/types.h>
17 #include <net/d80211.h>
18 #include "ieee80211_i.h"
21 #define RATE_CONTROL_NUM_DOWN 20
22 #define RATE_CONTROL_NUM_UP 15
25 struct rate_control_extra {
26 /* values from rate_control_get_rate() to the caller: */
27 struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
29 int startidx, endidx, rateidx;
30 struct ieee80211_rate *nonerp;
33 /* parameters from the caller to rate_control_get_rate(): */
34 int mgmt_data; /* this is data frame that is used for management
35 * (e.g., IEEE 802.1X EAPOL) */
40 struct rate_control_ops {
41 struct module *module;
43 void (*tx_status)(void *priv, struct net_device *dev,
45 struct ieee80211_tx_status *status);
46 struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
48 struct rate_control_extra *extra);
49 void (*rate_init)(void *priv, void *priv_sta,
50 struct ieee80211_local *local, struct sta_info *sta);
51 void (*clear)(void *priv);
53 void *(*alloc)(struct ieee80211_local *local);
54 void (*free)(void *priv);
55 void *(*alloc_sta)(void *priv, gfp_t gfp);
56 void (*free_sta)(void *priv, void *priv_sta);
58 int (*add_attrs)(void *priv, struct kobject *kobj);
59 void (*remove_attrs)(void *priv, struct kobject *kobj);
60 int (*add_sta_attrs)(void *priv, void *priv_sta,
61 struct kobject *kobj);
62 void (*remove_sta_attrs)(void *priv, void *priv_sta,
63 struct kobject *kobj);
66 struct rate_control_ref {
67 struct rate_control_ops *ops;
72 int ieee80211_rate_control_register(struct rate_control_ops *ops);
73 void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
75 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
76 * first available algorithm. */
77 struct rate_control_ref *rate_control_alloc(const char *name,
78 struct ieee80211_local *local);
79 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
80 void rate_control_put(struct rate_control_ref *ref);
82 static inline void rate_control_tx_status(struct ieee80211_local *local,
83 struct net_device *dev,
85 struct ieee80211_tx_status *status)
87 struct rate_control_ref *ref = local->rate_ctrl;
88 ref->ops->tx_status(ref->priv, dev, skb, status);
92 static inline struct ieee80211_rate *
93 rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
94 struct sk_buff *skb, struct rate_control_extra *extra)
96 struct rate_control_ref *ref = local->rate_ctrl;
97 return ref->ops->get_rate(ref->priv, dev, skb, extra);
101 static inline void rate_control_rate_init(struct sta_info *sta,
102 struct ieee80211_local *local)
104 struct rate_control_ref *ref = sta->rate_ctrl;
105 ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
109 static inline void rate_control_clear(struct ieee80211_local *local)
111 struct rate_control_ref *ref = local->rate_ctrl;
112 ref->ops->clear(ref->priv);
115 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
118 return ref->ops->alloc_sta(ref->priv, gfp);
121 static inline void rate_control_free_sta(struct rate_control_ref *ref,
124 ref->ops->free_sta(ref->priv, priv);
127 static inline int rate_control_add_attrs(struct rate_control_ref *ref,
128 struct kobject *kobj)
130 if (ref->ops->add_attrs)
131 return ref->ops->add_attrs(ref->priv, kobj);
135 static inline void rate_control_remove_attrs(struct rate_control_ref *ref,
136 struct kobject *kobj)
138 if (ref->ops->remove_attrs)
139 ref->ops->remove_attrs(ref->priv, kobj);
142 static inline int rate_control_add_sta_attrs(struct sta_info *sta,
143 struct kobject *kobj)
145 struct rate_control_ref *ref = sta->rate_ctrl;
146 if (ref->ops->add_sta_attrs)
147 return ref->ops->add_sta_attrs(ref->priv, sta->rate_ctrl_priv,
152 static inline void rate_control_remove_sta_attrs(struct sta_info *sta,
153 struct kobject *kobj)
155 struct rate_control_ref *ref = sta->rate_ctrl;
156 if (ref->ops->remove_sta_attrs)
157 ref->ops->remove_sta_attrs(ref->priv, sta->rate_ctrl_priv,
161 #endif /* IEEE80211_RATE_H */