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, 2024 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
20struct rate_control_ref {
21 const struct rate_control_ops *ops;
22 void *priv;
23};
24
25void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
26 struct sta_info *sta,
27 struct ieee80211_tx_rate_control *txrc);
28
29void rate_control_tx_status(struct ieee80211_local *local,
30 struct ieee80211_tx_status *st);
31
32void rate_control_rate_init(struct link_sta_info *link_sta);
33void rate_control_rate_init_all_links(struct sta_info *sta);
34void rate_control_rate_update(struct ieee80211_local *local,
35 struct ieee80211_supported_band *sband,
36 struct link_sta_info *link_sta,
37 u32 changed);
38
39static 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
46static 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
55static 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
65extern const struct debugfs_short_fops rcname_ops;
66
67static 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
88void 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. */
92int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
93 const char *name);
94void rate_control_deinitialize(struct ieee80211_local *local);
95
96
97/* Rate control algorithms */
98#ifdef CONFIG_MAC80211_RC_MINSTREL
99int rc80211_minstrel_init(void);
100void rc80211_minstrel_exit(void);
101#else
102static inline int rc80211_minstrel_init(void)
103{
104 return 0;
105}
106static inline void rc80211_minstrel_exit(void)
107{
108}
109#endif
110
111
112#endif /* IEEE80211_RATE_H */
113