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 <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 struct ieee80211_chanctx_conf *chanctx_conf;
56
57 if (!ref)
58 return;
59
60 rcu_read_lock();
61
62 chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
63 if (WARN_ON(!chanctx_conf)) {
64 rcu_read_unlock();
65 return;
66 }
67
68 sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
69 rcu_read_unlock();
70
71 ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
72 set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
73}
74
75static inline void rate_control_rate_update(struct ieee80211_local *local,
76 struct ieee80211_supported_band *sband,
77 struct sta_info *sta, u32 changed)
78{
79 struct rate_control_ref *ref = local->rate_ctrl;
80 struct ieee80211_sta *ista = &sta->sta;
81 void *priv_sta = sta->rate_ctrl_priv;
82
83 if (ref && ref->ops->rate_update)
84 ref->ops->rate_update(ref->priv, sband, ista,
85 priv_sta, changed);
86 drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
87}
88
89static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
90 struct ieee80211_sta *sta,
91 gfp_t gfp)
92{
93 return ref->ops->alloc_sta(ref->priv, sta, gfp);
94}
95
96static inline void rate_control_free_sta(struct sta_info *sta)
97{
98 struct rate_control_ref *ref = sta->rate_ctrl;
99 struct ieee80211_sta *ista = &sta->sta;
100 void *priv_sta = sta->rate_ctrl_priv;
101
102 ref->ops->free_sta(ref->priv, ista, priv_sta);
103}
104
105static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
106{
107#ifdef CONFIG_MAC80211_DEBUGFS
108 struct rate_control_ref *ref = sta->rate_ctrl;
109 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
110 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
111 sta->debugfs.dir);
112#endif
113}
114
115static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
116{
117#ifdef CONFIG_MAC80211_DEBUGFS
118 struct rate_control_ref *ref = sta->rate_ctrl;
119 if (ref && ref->ops->remove_sta_debugfs)
120 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
121#endif
122}
123
124/* Get a reference to the rate control algorithm. If `name' is NULL, get the
125 * first available algorithm. */
126int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
127 const char *name);
128void rate_control_deinitialize(struct ieee80211_local *local);
129
130
131/* Rate control algorithms */
132#ifdef CONFIG_MAC80211_RC_PID
133extern int rc80211_pid_init(void);
134extern void rc80211_pid_exit(void);
135#else
136static inline int rc80211_pid_init(void)
137{
138 return 0;
139}
140static inline void rc80211_pid_exit(void)
141{
142}
143#endif
144
145#ifdef CONFIG_MAC80211_RC_MINSTREL
146extern int rc80211_minstrel_init(void);
147extern void rc80211_minstrel_exit(void);
148#else
149static inline int rc80211_minstrel_init(void)
150{
151 return 0;
152}
153static inline void rc80211_minstrel_exit(void)
154{
155}
156#endif
157
158#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
159extern int rc80211_minstrel_ht_init(void);
160extern void rc80211_minstrel_ht_exit(void);
161#else
162static inline int rc80211_minstrel_ht_init(void)
163{
164 return 0;
165}
166static inline void rc80211_minstrel_ht_exit(void)
167{
168}
169#endif
170
171
172#endif /* IEEE80211_RATE_H */