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1/*
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>
17#include <net/mac80211.h>
18#include "ieee80211_i.h"
19#include "sta_info.h"
20#include "driver-ops.h"
21
22struct rate_control_ref {
23 struct ieee80211_local *local;
24 struct rate_control_ops *ops;
25 void *priv;
26};
27
28void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
29 struct sta_info *sta,
30 struct ieee80211_tx_rate_control *txrc);
31
32static inline void rate_control_tx_status(struct ieee80211_local *local,
33 struct ieee80211_supported_band *sband,
34 struct sta_info *sta,
35 struct sk_buff *skb)
36{
37 struct rate_control_ref *ref = local->rate_ctrl;
38 struct ieee80211_sta *ista = &sta->sta;
39 void *priv_sta = sta->rate_ctrl_priv;
40
41 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
42 return;
43
44 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
45}
46
47
48static inline void rate_control_rate_init(struct sta_info *sta)
49{
50 struct ieee80211_local *local = sta->sdata->local;
51 struct rate_control_ref *ref = sta->rate_ctrl;
52 struct ieee80211_sta *ista = &sta->sta;
53 void *priv_sta = sta->rate_ctrl_priv;
54 struct ieee80211_supported_band *sband;
55
56 if (!ref)
57 return;
58
59 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
60
61 ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
62 set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
63}
64
65static inline void rate_control_rate_update(struct ieee80211_local *local,
66 struct ieee80211_supported_band *sband,
67 struct sta_info *sta, u32 changed)
68{
69 struct rate_control_ref *ref = local->rate_ctrl;
70 struct ieee80211_sta *ista = &sta->sta;
71 void *priv_sta = sta->rate_ctrl_priv;
72
73 if (ref && ref->ops->rate_update)
74 ref->ops->rate_update(ref->priv, sband, ista,
75 priv_sta, changed);
76 drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
77}
78
79static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
80 struct ieee80211_sta *sta,
81 gfp_t gfp)
82{
83 return ref->ops->alloc_sta(ref->priv, sta, gfp);
84}
85
86static inline void rate_control_free_sta(struct sta_info *sta)
87{
88 struct rate_control_ref *ref = sta->rate_ctrl;
89 struct ieee80211_sta *ista = &sta->sta;
90 void *priv_sta = sta->rate_ctrl_priv;
91
92 ref->ops->free_sta(ref->priv, ista, priv_sta);
93}
94
95static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
96{
97#ifdef CONFIG_MAC80211_DEBUGFS
98 struct rate_control_ref *ref = sta->rate_ctrl;
99 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
100 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
101 sta->debugfs.dir);
102#endif
103}
104
105static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
106{
107#ifdef CONFIG_MAC80211_DEBUGFS
108 struct rate_control_ref *ref = sta->rate_ctrl;
109 if (ref && ref->ops->remove_sta_debugfs)
110 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
111#endif
112}
113
114/* Get a reference to the rate control algorithm. If `name' is NULL, get the
115 * first available algorithm. */
116int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
117 const char *name);
118void rate_control_deinitialize(struct ieee80211_local *local);
119
120
121/* Rate control algorithms */
122#ifdef CONFIG_MAC80211_RC_PID
123extern int rc80211_pid_init(void);
124extern void rc80211_pid_exit(void);
125#else
126static inline int rc80211_pid_init(void)
127{
128 return 0;
129}
130static inline void rc80211_pid_exit(void)
131{
132}
133#endif
134
135#ifdef CONFIG_MAC80211_RC_MINSTREL
136extern int rc80211_minstrel_init(void);
137extern void rc80211_minstrel_exit(void);
138#else
139static inline int rc80211_minstrel_init(void)
140{
141 return 0;
142}
143static inline void rc80211_minstrel_exit(void)
144{
145}
146#endif
147
148#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
149extern int rc80211_minstrel_ht_init(void);
150extern void rc80211_minstrel_ht_exit(void);
151#else
152static inline int rc80211_minstrel_ht_init(void)
153{
154 return 0;
155}
156static inline void rc80211_minstrel_ht_exit(void)
157{
158}
159#endif
160
161
162#endif /* IEEE80211_RATE_H */