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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 | |
19 | /* scaled fraction values */ |
20 | #define MINSTREL_SCALE 16 |
21 | #define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) |
22 | #define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) |
23 | |
24 | #define MCS_GROUP_RATES 8 |
25 | |
26 | struct mcs_group { |
27 | u32 flags; |
28 | unsigned int streams; |
29 | unsigned int duration[MCS_GROUP_RATES]; |
30 | }; |
31 | |
32 | extern const struct mcs_group minstrel_mcs_groups[]; |
33 | |
34 | struct minstrel_rate_stats { |
35 | /* current / last sampling period attempts/success counters */ |
36 | unsigned int attempts, last_attempts; |
37 | unsigned int success, last_success; |
38 | |
39 | /* total attempts/success counters */ |
40 | u64 att_hist, succ_hist; |
41 | |
42 | /* current throughput */ |
43 | unsigned int cur_tp; |
44 | |
45 | /* packet delivery probabilities */ |
46 | unsigned int cur_prob, probability; |
47 | |
48 | /* maximum retry counts */ |
49 | unsigned int retry_count; |
50 | unsigned int retry_count_rtscts; |
51 | |
52 | bool retry_updated; |
53 | u8 sample_skipped; |
54 | }; |
55 | |
56 | struct minstrel_mcs_group_data { |
57 | u8 index; |
58 | u8 column; |
59 | |
60 | /* bitfield of supported MCS rates of this group */ |
61 | u8 supported; |
62 | |
63 | /* selected primary rates */ |
64 | unsigned int max_tp_rate; |
65 | unsigned int max_tp_rate2; |
66 | unsigned int max_prob_rate; |
67 | |
68 | /* MCS rate statistics */ |
69 | struct minstrel_rate_stats rates[MCS_GROUP_RATES]; |
70 | }; |
71 | |
72 | struct minstrel_ht_sta { |
73 | /* ampdu length (average, per sampling interval) */ |
74 | unsigned int ampdu_len; |
75 | unsigned int ampdu_packets; |
76 | |
77 | /* ampdu length (EWMA) */ |
78 | unsigned int avg_ampdu_len; |
79 | |
80 | /* best throughput rate */ |
81 | unsigned int max_tp_rate; |
82 | |
83 | /* second best throughput rate */ |
84 | unsigned int max_tp_rate2; |
85 | |
86 | /* best probability rate */ |
87 | unsigned int max_prob_rate; |
88 | |
89 | /* time of last status update */ |
90 | unsigned long stats_update; |
91 | |
92 | /* overhead time in usec for each frame */ |
93 | unsigned int overhead; |
94 | unsigned int overhead_rtscts; |
95 | |
96 | unsigned int total_packets; |
97 | unsigned int sample_packets; |
98 | |
99 | /* tx flags to add for frames for this sta */ |
100 | u32 tx_flags; |
101 | |
102 | u8 sample_wait; |
103 | u8 sample_tries; |
104 | u8 sample_count; |
105 | u8 sample_slow; |
106 | |
107 | /* current MCS group to be sampled */ |
108 | u8 sample_group; |
109 | |
110 | /* MCS rate group info and statistics */ |
111 | struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS]; |
112 | }; |
113 | |
114 | struct minstrel_ht_sta_priv { |
115 | union { |
116 | struct minstrel_ht_sta ht; |
117 | struct minstrel_sta_info legacy; |
118 | }; |
119 | #ifdef CONFIG_MAC80211_DEBUGFS |
120 | struct dentry *dbg_stats; |
121 | #endif |
122 | void *ratelist; |
123 | void *sample_table; |
124 | bool is_ht; |
125 | }; |
126 | |
127 | void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); |
128 | void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); |
129 | |
130 | #endif |
131 |
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Tags:
od-2011-09-04
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v2.6.34-rc5
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