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