projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ec8aa669 FF |
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 | struct minstrel_rate_stats { | |
| 33 | /* current / last sampling period attempts/success counters */ | |
| 34 | unsigned int attempts, last_attempts; | |
| 35 | unsigned int success, last_success; | |
| 36 | ||
| 37 | /* total attempts/success counters */ | |
| 38 | u64 att_hist, succ_hist; | |
| 39 | ||
| 40 | /* current throughput */ | |
| 41 | unsigned int cur_tp; | |
| 42 | ||
| 43 | /* packet delivery probabilities */ | |
| 44 | unsigned int cur_prob, probability; | |
| 45 | ||
| 46 | /* maximum retry counts */ | |
| 47 | unsigned int retry_count; | |
| 48 | unsigned int retry_count_rtscts; | |
| 49 | ||
| 50 | bool retry_updated; | |
| 51 | u8 sample_skipped; | |
| 52 | }; | |
| 53 | ||
| 54 | struct minstrel_mcs_group_data { | |
| 55 | u8 index; | |
| 56 | u8 column; | |
| 57 | ||
| 58 | /* bitfield of supported MCS rates of this group */ | |
| 59 | u8 supported; | |
| 60 | ||
| 61 | /* selected primary rates */ | |
| 62 | unsigned int max_tp_rate; | |
| 63 | unsigned int max_tp_rate2; | |
| 64 | unsigned int max_prob_rate; | |
| 65 | ||
| 66 | /* MCS rate statistics */ | |
| 67 | struct minstrel_rate_stats rates[MCS_GROUP_RATES]; | |
| 68 | }; | |
| 69 | ||
| 70 | struct minstrel_ht_sta { | |
| 71 | /* ampdu length (average, per sampling interval) */ | |
| 72 | unsigned int ampdu_len; | |
| 73 | unsigned int ampdu_packets; | |
| 74 | ||
| 75 | /* ampdu length (EWMA) */ | |
| 76 | unsigned int avg_ampdu_len; | |
| 77 | ||
| 78 | /* best throughput rate */ | |
| 79 | unsigned int max_tp_rate; | |
| 80 | ||
| 81 | /* second best throughput rate */ | |
| 82 | unsigned int max_tp_rate2; | |
| 83 | ||
| 84 | /* best probability rate */ | |
| 85 | unsigned int max_prob_rate; | |
| 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 | ||
| 108 | /* MCS rate group info and statistics */ | |
| 109 | struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS]; | |
| 110 | }; | |
| 111 | ||
| 112 | struct minstrel_ht_sta_priv { | |
| 113 | union { | |
| 114 | struct minstrel_ht_sta ht; | |
| 115 | struct minstrel_sta_info legacy; | |
| 116 | }; | |
| 117 | #ifdef CONFIG_MAC80211_DEBUGFS | |
| 118 | struct dentry *dbg_stats; | |
| 119 | #endif | |
| 120 | void *ratelist; | |
| 121 | void *sample_table; | |
| 122 | bool is_ht; | |
| 123 | }; | |
| 124 | ||
| 125 | void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); | |
| 126 | void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); | |
| 127 | ||
| 128 | #endif |