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This patch enhances minstrel's performance for non-MRR setups, by preventing it from sampling slower rates with >95% success probability and by putting at least 1 non-sample frame between several sample frames. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
/*
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* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __RC_MINSTREL_H
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#define __RC_MINSTREL_H
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struct minstrel_rate {
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int bitrate;
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int rix;
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unsigned int perfect_tx_time;
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unsigned int ack_time;
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int sample_limit;
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unsigned int retry_count;
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unsigned int retry_count_cts;
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unsigned int retry_count_rtscts;
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unsigned int adjusted_retry_count;
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u32 success;
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u32 attempts;
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u32 last_attempts;
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u32 last_success;
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/* parts per thousand */
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u32 cur_prob;
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u32 probability;
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/* per-rate throughput */
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u32 cur_tp;
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u32 throughput;
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u64 succ_hist;
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u64 att_hist;
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};
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struct minstrel_sta_info {
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unsigned long stats_update;
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unsigned int sp_ack_dur;
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unsigned int rate_avg;
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unsigned int lowest_rix;
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unsigned int max_tp_rate;
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unsigned int max_tp_rate2;
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unsigned int max_prob_rate;
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unsigned int packet_count;
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unsigned int sample_count;
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int sample_deferred;
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unsigned int sample_idx;
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unsigned int sample_column;
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int n_rates;
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struct minstrel_rate *r;
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bool prev_sample;
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/* sampling table */
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u8 *sample_table;
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#ifdef CONFIG_MAC80211_DEBUGFS
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struct dentry *dbg_stats;
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#endif
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};
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struct minstrel_priv {
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struct ieee80211_hw *hw;
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bool has_mrr;
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unsigned int cw_min;
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unsigned int cw_max;
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unsigned int max_retry;
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unsigned int ewma_level;
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unsigned int segment_size;
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unsigned int update_interval;
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unsigned int lookaround_rate;
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unsigned int lookaround_rate_mrr;
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};
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void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
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void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
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#endif
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