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Jiri Bencf0706e822007-05-05 11:45:53 -07001/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
5 *
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.
9 */
10
11#ifndef IEEE80211_RATE_H
12#define IEEE80211_RATE_H
13
14#include <linux/netdevice.h>
15#include <linux/skbuff.h>
16#include <linux/types.h>
Johannes Bergd0709a62008-02-25 16:27:46 +010017#include <linux/kref.h>
Jiri Bencf0706e822007-05-05 11:45:53 -070018#include <net/mac80211.h>
19#include "ieee80211_i.h"
20#include "sta_info.h"
21
Jiri Bencf0706e822007-05-05 11:45:53 -070022struct rate_control_ref {
Johannes Berg4b7679a2008-09-18 18:14:18 +020023 struct ieee80211_local *local;
Jiri Bencf0706e822007-05-05 11:45:53 -070024 struct rate_control_ops *ops;
25 void *priv;
26 struct kref kref;
27};
28
Jiri Bencf0706e822007-05-05 11:45:53 -070029/* Get a reference to the rate control algorithm. If `name' is NULL, get the
30 * first available algorithm. */
31struct rate_control_ref *rate_control_alloc(const char *name,
32 struct ieee80211_local *local);
Johannes Berg4b7679a2008-09-18 18:14:18 +020033void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
Johannes Berg8318d782008-01-24 19:38:38 +010034 struct ieee80211_supported_band *sband,
Johannes Berg4b7679a2008-09-18 18:14:18 +020035 struct sta_info *sta, struct sk_buff *skb,
Mattias Nissler1abbe492007-12-20 13:50:07 +010036 struct rate_selection *sel);
Jiri Bencf0706e822007-05-05 11:45:53 -070037struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
38void rate_control_put(struct rate_control_ref *ref);
39
Johannes Berg4b7679a2008-09-18 18:14:18 +020040static inline void rate_control_tx_status(struct ieee80211_local *local,
41 struct ieee80211_supported_band *sband,
42 struct sta_info *sta,
Johannes Berge039fa42008-05-15 12:55:29 +020043 struct sk_buff *skb)
Jiri Bencf0706e822007-05-05 11:45:53 -070044{
45 struct rate_control_ref *ref = local->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020046 struct ieee80211_sta *ista = &sta->sta;
47 void *priv_sta = sta->rate_ctrl_priv;
Mattias Nissler1abbe492007-12-20 13:50:07 +010048
Johannes Berg4b7679a2008-09-18 18:14:18 +020049 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
Jiri Bencf0706e822007-05-05 11:45:53 -070050}
51
52
Johannes Berg4b7679a2008-09-18 18:14:18 +020053static inline void rate_control_rate_init(struct sta_info *sta)
Jiri Bencf0706e822007-05-05 11:45:53 -070054{
Johannes Berg4b7679a2008-09-18 18:14:18 +020055 struct ieee80211_local *local = sta->sdata->local;
Jiri Bencf0706e822007-05-05 11:45:53 -070056 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020057 struct ieee80211_sta *ista = &sta->sta;
58 void *priv_sta = sta->rate_ctrl_priv;
59 struct ieee80211_supported_band *sband;
60
61 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
62
63 ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
Jiri Bencf0706e822007-05-05 11:45:53 -070064}
65
66
67static inline void rate_control_clear(struct ieee80211_local *local)
68{
69 struct rate_control_ref *ref = local->rate_ctrl;
70 ref->ops->clear(ref->priv);
71}
72
73static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
Johannes Berg4b7679a2008-09-18 18:14:18 +020074 struct ieee80211_sta *sta,
Jiri Bencf0706e822007-05-05 11:45:53 -070075 gfp_t gfp)
76{
Johannes Berg4b7679a2008-09-18 18:14:18 +020077 return ref->ops->alloc_sta(ref->priv, sta, gfp);
Jiri Bencf0706e822007-05-05 11:45:53 -070078}
79
Johannes Berg4b7679a2008-09-18 18:14:18 +020080static inline void rate_control_free_sta(struct sta_info *sta)
Jiri Bencf0706e822007-05-05 11:45:53 -070081{
Johannes Berg4b7679a2008-09-18 18:14:18 +020082 struct rate_control_ref *ref = sta->rate_ctrl;
83 struct ieee80211_sta *ista = &sta->sta;
84 void *priv_sta = sta->rate_ctrl_priv;
85
86 ref->ops->free_sta(ref->priv, ista, priv_sta);
Jiri Bencf0706e822007-05-05 11:45:53 -070087}
88
Jiri Bence9f207f2007-05-05 11:46:38 -070089static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
90{
91#ifdef CONFIG_MAC80211_DEBUGFS
92 struct rate_control_ref *ref = sta->rate_ctrl;
93 if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
94 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
95 sta->debugfs.dir);
96#endif
97}
98
99static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
100{
101#ifdef CONFIG_MAC80211_DEBUGFS
102 struct rate_control_ref *ref = sta->rate_ctrl;
103 if (ref->ops->remove_sta_debugfs)
104 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
105#endif
106}
107
Johannes Bergff688082007-07-27 15:43:23 +0200108/* functions for rate control related to a device */
109int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
110 const char *name);
111void rate_control_deinitialize(struct ieee80211_local *local);
112
Johannes Berg4b475892008-01-02 15:17:03 +0100113
114/* Rate control algorithms */
Adrian Bunke5f5e732008-06-26 13:38:13 +0300115#ifdef CONFIG_MAC80211_RC_PID
Johannes Berg4b475892008-01-02 15:17:03 +0100116extern int rc80211_pid_init(void);
117extern void rc80211_pid_exit(void);
118#else
119static inline int rc80211_pid_init(void)
120{
121 return 0;
122}
123static inline void rc80211_pid_exit(void)
124{
125}
126#endif
127
Felix Fietkaucccf1292008-10-05 18:07:45 +0200128#ifdef CONFIG_MAC80211_RC_MINSTREL
129extern int rc80211_minstrel_init(void);
130extern void rc80211_minstrel_exit(void);
131#else
132static inline int rc80211_minstrel_init(void)
133{
134 return 0;
135}
136static inline void rc80211_minstrel_exit(void)
137{
138}
139#endif
140
141
Jiri Bencf0706e822007-05-05 11:45:53 -0700142#endif /* IEEE80211_RATE_H */