aboutsummaryrefslogtreecommitdiff
path: root/net/mac80211/rc80211_minstrel.h
blob: 0f5a83370aa637f18f854c7469cc21e8a491257c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
/*
 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __RC_MINSTREL_H
#define __RC_MINSTREL_H

struct minstrel_rate {
	int bitrate;
	int rix;

	unsigned int perfect_tx_time;
	unsigned int ack_time;

	int sample_limit;
	unsigned int retry_count;
	unsigned int retry_count_cts;
	unsigned int retry_count_rtscts;
	unsigned int adjusted_retry_count;

	u32 success;
	u32 attempts;
	u32 last_attempts;
	u32 last_success;

	/* parts per thousand */
	u32 cur_prob;
	u32 probability;

	/* per-rate throughput */
	u32 cur_tp;

	u64 succ_hist;
	u64 att_hist;
};

struct minstrel_sta_info {
	unsigned long stats_update;
	unsigned int sp_ack_dur;
	unsigned int rate_avg;

	unsigned int lowest_rix;

	unsigned int max_tp_rate;
	unsigned int max_tp_rate2;
	unsigned int max_prob_rate;
	unsigned int packet_count;
	unsigned int sample_count;
	int sample_deferred;

	unsigned int sample_idx;
	unsigned int sample_column;

	int n_rates;
	struct minstrel_rate *r;
	bool prev_sample;

	/* sampling table */
	u8 *sample_table;

#ifdef CONFIG_MAC80211_DEBUGFS
	struct dentry *dbg_stats;
#endif
};

struct minstrel_priv {
	struct ieee80211_hw *hw;
	bool has_mrr;
	unsigned int cw_min;
	unsigned int cw_max;
	unsigned int max_retry;
	unsigned int ewma_level;
	unsigned int segment_size;
	unsigned int update_interval;
	unsigned int lookaround_rate;
	unsigned int lookaround_rate_mrr;
};

struct minstrel_debugfs_info {
	size_t len;
	char buf[];
};

extern struct rate_control_ops mac80211_minstrel;
void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);

/* debugfs */
int minstrel_stats_open(struct inode *inode, struct file *file);
ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos);
int minstrel_stats_release(struct inode *inode, struct file *file);

#endif