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gerrit-public.fairphone.software / kernel / msm-4.9 / bf6edb4bb1fabd73bebcd0ae85cdeb14c5893f3b / . / net / mac80211 / rc80211_minstrel_ht.h
blob: d655586773ac2f435de881f84414c5e260424484 [file] [log] [blame]
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]1/*
2 * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
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_HT_H
10#define __RC_MINSTREL_HT_H
11
12/*
13 * The number of streams can be changed to 2 to reduce code
14 * size and memory footprint.
15 */
16#define MINSTREL_MAX_STREAMS 3
17#define MINSTREL_STREAM_GROUPS 4
18
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]19#define MCS_GROUP_RATES 8
20
21struct mcs_group {
22 u32 flags;
23 unsigned int streams;
24 unsigned int duration[MCS_GROUP_RATES];
25};
26
John W. Linvillede66bfd2010-06-24 13:03:14 -0400[diff] [blame]27extern const struct mcs_group minstrel_mcs_groups[];
28
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]29struct minstrel_rate_stats {
30 /* current / last sampling period attempts/success counters */
31 unsigned int attempts, last_attempts;
32 unsigned int success, last_success;
33
34 /* total attempts/success counters */
35 u64 att_hist, succ_hist;
36
37 /* current throughput */
38 unsigned int cur_tp;
39
40 /* packet delivery probabilities */
41 unsigned int cur_prob, probability;
42
43 /* maximum retry counts */
44 unsigned int retry_count;
45 unsigned int retry_count_rtscts;
46
47 bool retry_updated;
48 u8 sample_skipped;
49};
50
51struct minstrel_mcs_group_data {
52 u8 index;
53 u8 column;
54
55 /* bitfield of supported MCS rates of this group */
56 u8 supported;
57
58 /* selected primary rates */
59 unsigned int max_tp_rate;
60 unsigned int max_tp_rate2;
61 unsigned int max_prob_rate;
62
63 /* MCS rate statistics */
64 struct minstrel_rate_stats rates[MCS_GROUP_RATES];
65};
66
67struct minstrel_ht_sta {
Felix Fietkaua8566662013-04-22 16:14:42 +0200[diff] [blame]68 struct ieee80211_sta *sta;
69
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]70 /* ampdu length (average, per sampling interval) */
71 unsigned int ampdu_len;
72 unsigned int ampdu_packets;
73
74 /* ampdu length (EWMA) */
75 unsigned int avg_ampdu_len;
76
77 /* best throughput rate */
78 unsigned int max_tp_rate;
79
80 /* second best throughput rate */
81 unsigned int max_tp_rate2;
82
83 /* best probability rate */
84 unsigned int max_prob_rate;
Felix Fietkau965237a2013-03-03 12:49:51 +0100[diff] [blame]85 unsigned int max_prob_streams;
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]86
87 /* time of last status update */
88 unsigned long stats_update;
89
90 /* overhead time in usec for each frame */
91 unsigned int overhead;
92 unsigned int overhead_rtscts;
93
94 unsigned int total_packets;
95 unsigned int sample_packets;
96
97 /* tx flags to add for frames for this sta */
98 u32 tx_flags;
99
100 u8 sample_wait;
101 u8 sample_tries;
102 u8 sample_count;
103 u8 sample_slow;
104
105 /* current MCS group to be sampled */
106 u8 sample_group;
107
Felix Fietkaua0497f92013-02-13 10:51:08 +0100[diff] [blame]108 u8 cck_supported;
109 u8 cck_supported_short;
110
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]111 /* MCS rate group info and statistics */
Felix Fietkaua0497f92013-02-13 10:51:08 +0100[diff] [blame]112 struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS + 1];
Felix Fietkauec8aa662010-05-13 16:48:03 +0200[diff] [blame]113};
114
115struct minstrel_ht_sta_priv {
116 union {
117 struct minstrel_ht_sta ht;
118 struct minstrel_sta_info legacy;
119 };
120#ifdef CONFIG_MAC80211_DEBUGFS
121 struct dentry *dbg_stats;
122#endif
123 void *ratelist;
124 void *sample_table;
125 bool is_ht;
126};
127
128void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
129void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
130
131#endif