1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
6 * Copyright (C) 2022 Intel Corporation
7 */
8
9 #ifndef IEEE80211_RATE_H
10 #define IEEE80211_RATE_H
11
12 #include <linux/netdevice.h>
13 #include <linux/skbuff.h>
14 #include <linux/types.h>
15 #include <net/mac80211.h>
16 #include "ieee80211_i.h"
17 #include "sta_info.h"
18 #include "driver-ops.h"
19
20 struct rate_control_ref {
21 const struct rate_control_ops *ops;
22 void *priv;
23 };
24
25 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
26 struct sta_info *sta,
27 struct ieee80211_tx_rate_control *txrc);
28
29 void rate_control_tx_status(struct ieee80211_local *local,
30 struct ieee80211_tx_status *st);
31
32 void rate_control_rate_init(struct sta_info *sta);
33 void rate_control_rate_update(struct ieee80211_local *local,
34 struct ieee80211_supported_band *sband,
35 struct sta_info *sta,
36 unsigned int link_id,
37 u32 changed);
38
39 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
40 struct sta_info *sta, gfp_t gfp)
41 {
42 spin_lock_init(&sta->rate_ctrl_lock);
43 return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
44 }
45
46 static inline void rate_control_free_sta(struct sta_info *sta)
47 {
48 struct rate_control_ref *ref = sta->rate_ctrl;
49 struct ieee80211_sta *ista = &sta->sta;
50 void *priv_sta = sta->rate_ctrl_priv;
51
52 ref->ops->free_sta(ref->priv, ista, priv_sta);
53 }
54
55 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
56 {
57 #ifdef CONFIG_MAC80211_DEBUGFS
58 struct rate_control_ref *ref = sta->rate_ctrl;
59 if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
60 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
61 sta->debugfs_dir);
62 #endif
63 }
64
65 extern const struct file_operations rcname_ops;
66
67 static inline void rate_control_add_debugfs(struct ieee80211_local *local)
68 {
69 #ifdef CONFIG_MAC80211_DEBUGFS
70 struct dentry *debugfsdir;
71
72 if (!local->rate_ctrl)
73 return;
74
75 if (!local->rate_ctrl->ops->add_debugfs)
76 return;
77
78 debugfsdir = debugfs_create_dir("rc", local->hw.wiphy->debugfsdir);
79 local->debugfs.rcdir = debugfsdir;
80 debugfs_create_file("name", 0400, debugfsdir,
81 local->rate_ctrl, &rcname_ops);
82
83 local->rate_ctrl->ops->add_debugfs(&local->hw, local->rate_ctrl->priv,
84 debugfsdir);
85 #endif
86 }
87
88 void ieee80211_check_rate_mask(struct ieee80211_link_data *link);
89
90 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
91 * first available algorithm. */
92 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
93 const char *name);
94 void rate_control_deinitialize(struct ieee80211_local *local);
95
96
97 /* Rate control algorithms */
98 #ifdef CONFIG_MAC80211_RC_MINSTREL
99 int rc80211_minstrel_init(void);
100 void rc80211_minstrel_exit(void);
101 #else
102 static inline int rc80211_minstrel_init(void)
103 {
104 return 0;
105 }
106 static inline void rc80211_minstrel_exit(void)
107 {
108 }
109 #endif
110
111
112 #endif /* IEEE80211_RATE_H */
113
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