projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cccf129f FF |
1 | /* |
| 2 | * Copyright (C) 2008 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_H | |
| 10 | #define __RC_MINSTREL_H | |
| 11 | ||
| f744bf81 TH |
12 | #define EWMA_LEVEL 75 /* ewma weighting factor [%] */ |
| 13 | #define SAMPLE_COLUMNS 10 /* number of columns in sample table */ | |
| 14 | ||
| a512d4b5 | 15 | |
| c8ca8c2f TH |
16 | /* scaled fraction values */ |
| 17 | #define MINSTREL_SCALE 16 | |
| 18 | #define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) | |
| 19 | #define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) | |
| 20 | ||
| a512d4b5 TH |
21 | /* |
| 22 | * Perform EWMA (Exponentially Weighted Moving Average) calculation | |
| 23 | */ | |
| 24 | static inline int | |
| 25 | minstrel_ewma(int old, int new, int weight) | |
| 26 | { | |
| 27 | return (new * (100 - weight) + old * weight) / 100; | |
| 28 | } | |
| 29 | ||
| 30 | ||
| cccf129f FF |
31 | struct minstrel_rate { |
| 32 | int bitrate; | |
| 33 | int rix; | |
| 34 | ||
| 35 | unsigned int perfect_tx_time; | |
| 36 | unsigned int ack_time; | |
| 37 | ||
| f4a8cd94 | 38 | int sample_limit; |
| cccf129f FF |
39 | unsigned int retry_count; |
| 40 | unsigned int retry_count_cts; | |
| 41 | unsigned int retry_count_rtscts; | |
| 42 | unsigned int adjusted_retry_count; | |
| 43 | ||
| 44 | u32 success; | |
| 45 | u32 attempts; | |
| 46 | u32 last_attempts; | |
| 47 | u32 last_success; | |
| 1e9c27df | 48 | u8 sample_skipped; |
| cccf129f FF |
49 | |
| 50 | /* parts per thousand */ | |
| 51 | u32 cur_prob; | |
| 52 | u32 probability; | |
| 53 | ||
| 54 | /* per-rate throughput */ | |
| 55 | u32 cur_tp; | |
| cccf129f FF |
56 | |
| 57 | u64 succ_hist; | |
| 58 | u64 att_hist; | |
| 59 | }; | |
| 60 | ||
| 61 | struct minstrel_sta_info { | |
| 62 | unsigned long stats_update; | |
| 63 | unsigned int sp_ack_dur; | |
| 64 | unsigned int rate_avg; | |
| 65 | ||
| 66 | unsigned int lowest_rix; | |
| 67 | ||
| 68 | unsigned int max_tp_rate; | |
| 69 | unsigned int max_tp_rate2; | |
| 70 | unsigned int max_prob_rate; | |
| 71 | unsigned int packet_count; | |
| 72 | unsigned int sample_count; | |
| 73 | int sample_deferred; | |
| 74 | ||
| 8f157611 | 75 | unsigned int sample_row; |
| cccf129f FF |
76 | unsigned int sample_column; |
| 77 | ||
| 78 | int n_rates; | |
| 79 | struct minstrel_rate *r; | |
| f4a8cd94 | 80 | bool prev_sample; |
| cccf129f FF |
81 | |
| 82 | /* sampling table */ | |
| 83 | u8 *sample_table; | |
| 84 | ||
| 85 | #ifdef CONFIG_MAC80211_DEBUGFS | |
| 86 | struct dentry *dbg_stats; | |
| 87 | #endif | |
| 88 | }; | |
| 89 | ||
| 90 | struct minstrel_priv { | |
| 91 | struct ieee80211_hw *hw; | |
| 92 | bool has_mrr; | |
| 93 | unsigned int cw_min; | |
| 94 | unsigned int cw_max; | |
| 95 | unsigned int max_retry; | |
| cccf129f FF |
96 | unsigned int segment_size; |
| 97 | unsigned int update_interval; | |
| 98 | unsigned int lookaround_rate; | |
| 99 | unsigned int lookaround_rate_mrr; | |
| 24f7580e | 100 | |
| a0497f9f FF |
101 | u8 cck_rates[4]; |
| 102 | ||
| 24f7580e ZK |
103 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 104 | /* | |
| 105 | * enable fixed rate processing per RC | |
| 106 | * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx | |
| 107 | * - write -1 to enable RC processing again | |
| 108 | * - setting will be applied on next update | |
| 109 | */ | |
| 110 | u32 fixed_rate_idx; | |
| 111 | struct dentry *dbg_fixed_rate; | |
| 112 | #endif | |
| 113 | ||
| cccf129f FF |
114 | }; |
| 115 | ||
| 44ac91ea FF |
116 | struct minstrel_debugfs_info { |
| 117 | size_t len; | |
| 118 | char buf[]; | |
| 119 | }; | |
| 120 | ||
| eae44756 | 121 | extern struct rate_control_ops mac80211_minstrel; |
| cccf129f FF |
122 | void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); |
| 123 | void minstrel_remove_sta_debugfs(void *priv, void *priv_sta); | |
| 124 | ||
| eae44756 FF |
125 | /* debugfs */ |
| 126 | int minstrel_stats_open(struct inode *inode, struct file *file); | |
| 127 | ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos); | |
| 128 | int minstrel_stats_release(struct inode *inode, struct file *file); | |
| 129 | ||
| cccf129f | 130 | #endif |