tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 <linux/kref.h>
18#include <net/mac80211.h>
19#include "ieee80211_i.h"
20#include "sta_info.h"
21
22struct rate_control_ref {
23 struct ieee80211_local *local;
24 struct rate_control_ops *ops;
25 void *priv;
26 struct kref kref;
27};
28
29/* 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);
33void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
34 struct ieee80211_supported_band *sband,
35 struct sta_info *sta, struct sk_buff *skb,
36 struct rate_selection *sel);
37struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
38void rate_control_put(struct rate_control_ref *ref);
39
40static inline void rate_control_tx_status(struct ieee80211_local *local,
41 struct ieee80211_supported_band *sband,
42 struct sta_info *sta,
43 struct sk_buff *skb)
44{
45 struct rate_control_ref *ref = local->rate_ctrl;
46 struct ieee80211_sta *ista = &sta->sta;
47 void *priv_sta = sta->rate_ctrl_priv;
48
49 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
50}
51
52
53static inline void rate_control_rate_init(struct sta_info *sta)
54{
55 struct ieee80211_local *local = sta->sdata->local;
56 struct rate_control_ref *ref = sta->rate_ctrl;
57 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);
64}
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,
74 struct ieee80211_sta *sta,
75 gfp_t gfp)
76{
77 return ref->ops->alloc_sta(ref->priv, sta, gfp);
78}
79
80static inline void rate_control_free_sta(struct sta_info *sta)
81{
82 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);
87}
88
89static 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
108/* 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
113
114/* Rate control algorithms */
115#ifdef CONFIG_MAC80211_RC_PID
116extern 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
128#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
142#endif /* IEEE80211_RATE_H */