2010-05-13 14:48:03 +00:00
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/*
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* Copyright (C) 2010 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_HT_H
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#define __RC_MINSTREL_HT_H
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/*
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* The number of streams can be changed to 2 to reduce code
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* size and memory footprint.
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*/
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#define MINSTREL_MAX_STREAMS 3
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#define MINSTREL_STREAM_GROUPS 4
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/* scaled fraction values */
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#define MINSTREL_SCALE 16
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#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
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#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
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#define MCS_GROUP_RATES 8
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struct mcs_group {
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u32 flags;
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unsigned int streams;
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unsigned int duration[MCS_GROUP_RATES];
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};
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2010-06-24 17:03:14 +00:00
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extern const struct mcs_group minstrel_mcs_groups[];
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2010-05-13 14:48:03 +00:00
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struct minstrel_rate_stats {
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/* current / last sampling period attempts/success counters */
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unsigned int attempts, last_attempts;
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unsigned int success, last_success;
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/* total attempts/success counters */
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u64 att_hist, succ_hist;
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/* current throughput */
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unsigned int cur_tp;
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/* packet delivery probabilities */
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unsigned int cur_prob, probability;
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/* maximum retry counts */
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unsigned int retry_count;
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unsigned int retry_count_rtscts;
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bool retry_updated;
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u8 sample_skipped;
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};
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struct minstrel_mcs_group_data {
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u8 index;
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u8 column;
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/* bitfield of supported MCS rates of this group */
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u8 supported;
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/* selected primary rates */
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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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/* MCS rate statistics */
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struct minstrel_rate_stats rates[MCS_GROUP_RATES];
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};
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struct minstrel_ht_sta {
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/* ampdu length (average, per sampling interval) */
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unsigned int ampdu_len;
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unsigned int ampdu_packets;
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/* ampdu length (EWMA) */
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unsigned int avg_ampdu_len;
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/* best throughput rate */
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unsigned int max_tp_rate;
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/* second best throughput rate */
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unsigned int max_tp_rate2;
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/* best probability rate */
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unsigned int max_prob_rate;
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/* time of last status update */
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unsigned long stats_update;
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/* overhead time in usec for each frame */
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unsigned int overhead;
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unsigned int overhead_rtscts;
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unsigned int total_packets;
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unsigned int sample_packets;
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/* tx flags to add for frames for this sta */
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u32 tx_flags;
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u8 sample_wait;
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u8 sample_tries;
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u8 sample_count;
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u8 sample_slow;
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/* current MCS group to be sampled */
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u8 sample_group;
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/* MCS rate group info and statistics */
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struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS];
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};
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struct minstrel_ht_sta_priv {
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union {
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struct minstrel_ht_sta ht;
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struct minstrel_sta_info legacy;
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};
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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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void *ratelist;
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void *sample_table;
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bool is_ht;
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};
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void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
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void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
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#endif
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