tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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 const 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 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
41
42 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
43 return;
44
45 spin_lock_bh(&sta->rate_ctrl_lock);
46 if (ref->ops->tx_status)
47 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
48 else
49 ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
50 spin_unlock_bh(&sta->rate_ctrl_lock);
51}
52
53static inline void
54rate_control_tx_status_noskb(struct ieee80211_local *local,
55 struct ieee80211_supported_band *sband,
56 struct sta_info *sta,
57 struct ieee80211_tx_info *info)
58{
59 struct rate_control_ref *ref = local->rate_ctrl;
60 struct ieee80211_sta *ista = &sta->sta;
61 void *priv_sta = sta->rate_ctrl_priv;
62
63 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
64 return;
65
66 if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
67 return;
68
69 spin_lock_bh(&sta->rate_ctrl_lock);
70 ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
71 spin_unlock_bh(&sta->rate_ctrl_lock);
72}
73
74void rate_control_rate_init(struct sta_info *sta);
75void rate_control_rate_update(struct ieee80211_local *local,
76 struct ieee80211_supported_band *sband,
77 struct sta_info *sta, u32 changed);
78
79static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
80 struct sta_info *sta, gfp_t gfp)
81{
82 spin_lock_init(&sta->rate_ctrl_lock);
83 return ref->ops->alloc_sta(ref->priv, &sta->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_MINSTREL
123int rc80211_minstrel_init(void);
124void rc80211_minstrel_exit(void);
125#else
126static inline int rc80211_minstrel_init(void)
127{
128 return 0;
129}
130static inline void rc80211_minstrel_exit(void)
131{
132}
133#endif
134
135#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
136int rc80211_minstrel_ht_init(void);
137void rc80211_minstrel_ht_exit(void);
138#else
139static inline int rc80211_minstrel_ht_init(void)
140{
141 return 0;
142}
143static inline void rc80211_minstrel_ht_exit(void)
144{
145}
146#endif
147
148
149#endif /* IEEE80211_RATE_H */