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rc80211_minstrel.h
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1 /*
2  * Copyright (C) 2008 Felix Fietkau <[email protected]>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 
9 #ifndef __RC_MINSTREL_H
10 #define __RC_MINSTREL_H
11 
12 struct minstrel_rate {
13  int bitrate;
14  int rix;
15 
16  unsigned int perfect_tx_time;
17  unsigned int ack_time;
18 
19  int sample_limit;
20  unsigned int retry_count;
21  unsigned int retry_count_cts;
22  unsigned int retry_count_rtscts;
23  unsigned int adjusted_retry_count;
24 
25  u32 success;
26  u32 attempts;
27  u32 last_attempts;
28  u32 last_success;
29 
30  /* parts per thousand */
31  u32 cur_prob;
32  u32 probability;
33 
34  /* per-rate throughput */
35  u32 cur_tp;
36 
37  u64 succ_hist;
38  u64 att_hist;
39 };
40 
41 struct minstrel_sta_info {
42  unsigned long stats_update;
43  unsigned int sp_ack_dur;
44  unsigned int rate_avg;
45 
46  unsigned int lowest_rix;
47 
48  unsigned int max_tp_rate;
49  unsigned int max_tp_rate2;
50  unsigned int max_prob_rate;
51  unsigned int packet_count;
52  unsigned int sample_count;
53  int sample_deferred;
54 
55  unsigned int sample_idx;
56  unsigned int sample_column;
57 
58  int n_rates;
59  struct minstrel_rate *r;
60  bool prev_sample;
61 
62  /* sampling table */
63  u8 *sample_table;
64 
65 #ifdef CONFIG_MAC80211_DEBUGFS
66  struct dentry *dbg_stats;
67 #endif
68 };
69 
70 struct minstrel_priv {
71  struct ieee80211_hw *hw;
72  bool has_mrr;
73  unsigned int cw_min;
74  unsigned int cw_max;
75  unsigned int max_retry;
76  unsigned int ewma_level;
77  unsigned int segment_size;
78  unsigned int update_interval;
79  unsigned int lookaround_rate;
80  unsigned int lookaround_rate_mrr;
81 
82 #ifdef CONFIG_MAC80211_DEBUGFS
83  /*
84  * enable fixed rate processing per RC
85  * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx
86  * - write -1 to enable RC processing again
87  * - setting will be applied on next update
88  */
89  u32 fixed_rate_idx;
90  struct dentry *dbg_fixed_rate;
91 #endif
92 
93 };
94 
95 struct minstrel_debugfs_info {
96  size_t len;
97  char buf[];
98 };
99 
100 extern struct rate_control_ops mac80211_minstrel;
101 void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
102 void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
103 
104 /* debugfs */
105 int minstrel_stats_open(struct inode *inode, struct file *file);
106 ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos);
107 int minstrel_stats_release(struct inode *inode, struct file *file);
108 
109 #endif
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