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 sta_info *sta,
35 struct ieee80211_tx_rate_control *txrc);
36struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
37void rate_control_put(struct rate_control_ref *ref);
38
39static inline void rate_control_tx_status(struct ieee80211_local *local,
40 struct ieee80211_supported_band *sband,
41 struct sta_info *sta,
42 struct sk_buff *skb)
43{
44 struct rate_control_ref *ref = local->rate_ctrl;
45 struct ieee80211_sta *ista = &sta->sta;
46 void *priv_sta = sta->rate_ctrl_priv;
47 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
48
49 if (likely(info->flags & IEEE80211_TX_INTFL_RCALGO))
50 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
51}
52
53
54static inline void rate_control_rate_init(struct sta_info *sta)
55{
56 struct ieee80211_local *local = sta->sdata->local;
57 struct rate_control_ref *ref = sta->rate_ctrl;
58 struct ieee80211_sta *ista = &sta->sta;
59 void *priv_sta = sta->rate_ctrl_priv;
60 struct ieee80211_supported_band *sband;
61
62 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
63
64 ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
65}
66
67static inline void rate_control_rate_update(struct ieee80211_local *local,
68 struct ieee80211_supported_band *sband,
69 struct sta_info *sta, u32 changed)
70{
71 struct rate_control_ref *ref = local->rate_ctrl;
72 struct ieee80211_sta *ista = &sta->sta;
73 void *priv_sta = sta->rate_ctrl_priv;
74
75 if (ref->ops->rate_update)
76 ref->ops->rate_update(ref->priv, sband, ista,
77 priv_sta, changed);
78}
79
80static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
81 struct ieee80211_sta *sta,
82 gfp_t gfp)
83{
84 return ref->ops->alloc_sta(ref->priv, sta, gfp);
85}
86
87static inline void rate_control_free_sta(struct sta_info *sta)
88{
89 struct rate_control_ref *ref = sta->rate_ctrl;
90 struct ieee80211_sta *ista = &sta->sta;
91 void *priv_sta = sta->rate_ctrl_priv;
92
93 ref->ops->free_sta(ref->priv, ista, priv_sta);
94}
95
96static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
97{
98#ifdef CONFIG_MAC80211_DEBUGFS
99 struct rate_control_ref *ref = sta->rate_ctrl;
100 if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
101 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
102 sta->debugfs.dir);
103#endif
104}
105
106static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
107{
108#ifdef CONFIG_MAC80211_DEBUGFS
109 struct rate_control_ref *ref = sta->rate_ctrl;
110 if (ref->ops->remove_sta_debugfs)
111 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
112#endif
113}
114
115/* functions for rate control related to a device */
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
149#endif /* IEEE80211_RATE_H */