net/mac80211/rc80211_minstrel.h

   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
  12 struct minstrel_rate {
  13         int bitrate;
  14         int rix;
  15
  16         unsigned int perfect_tx_time;
  17         unsigned int ack_time;
  18
  19         int sample_limit;
  20         unsigned int retry_count;
  21         unsigned int retry_count_cts;
  22         unsigned int retry_count_rtscts;
  23         unsigned int adjusted_retry_count;
  24
  25         u32 success;
  26         u32 attempts;
  27         u32 last_attempts;
  28         u32 last_success;
  29
  30         /* parts per thousand */
  31         u32 cur_prob;
  32         u32 probability;
  33
  34         /* per-rate throughput */
  35         u32 cur_tp;
  36
  37         u64 succ_hist;
  38         u64 att_hist;
  39 };
  40
  41 struct minstrel_sta_info {
  42         unsigned long stats_update;
  43         unsigned int sp_ack_dur;
  44         unsigned int rate_avg;
  45
  46         unsigned int lowest_rix;
  47
  48         unsigned int max_tp_rate;
  49         unsigned int max_tp_rate2;
  50         unsigned int max_prob_rate;
  51         unsigned int packet_count;
  52         unsigned int sample_count;
  53         int sample_deferred;
  54
  55         unsigned int sample_idx;
  56         unsigned int sample_column;
  57
  58         int n_rates;
  59         struct minstrel_rate *r;
  60         bool prev_sample;
  61
  62         /* sampling table */
  63         u8 *sample_table;
  64
  65 #ifdef CONFIG_MAC80211_DEBUGFS
  66         struct dentry *dbg_stats;
  67 #endif
  68 };
  69
  70 struct minstrel_priv {
  71         struct ieee80211_hw *hw;
  72         bool has_mrr;
  73         unsigned int cw_min;
  74         unsigned int cw_max;
  75         unsigned int max_retry;
  76         unsigned int ewma_level;
  77         unsigned int segment_size;
  78         unsigned int update_interval;
  79         unsigned int lookaround_rate;
  80         unsigned int lookaround_rate_mrr;
  81
  82         u8 cck_rates[4];
  83
  84 #ifdef CONFIG_MAC80211_DEBUGFS
  85         /*
  86          * enable fixed rate processing per RC
  87          *   - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx
  88          *   - write -1 to enable RC processing again
  89          *   - setting will be applied on next update
  90          */
  91         u32 fixed_rate_idx;
  92         struct dentry *dbg_fixed_rate;
  93 #endif
  94
  95 };
  96
  97 struct minstrel_debugfs_info {
  98         size_t len;
  99         char buf[];
 100 };
 101
 102 extern struct rate_control_ops mac80211_minstrel;
 103 void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
 104 void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
 105
 106 /* debugfs */
 107 int minstrel_stats_open(struct inode *inode, struct file *file);
 108 ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos);
 109 int minstrel_stats_release(struct inode *inode, struct file *file);
 110
 111 #endif