| /* |
| * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef __RC_MINSTREL_HT_H |
| #define __RC_MINSTREL_HT_H |
| |
| /* |
| * The number of streams can be changed to 2 to reduce code |
| * size and memory footprint. |
| */ |
| #define MINSTREL_MAX_STREAMS 3 |
| #define MINSTREL_STREAM_GROUPS 4 |
| |
| /* scaled fraction values */ |
| #define MINSTREL_SCALE 16 |
| #define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div) |
| #define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE) |
| |
| #define MCS_GROUP_RATES 8 |
| |
| struct mcs_group { |
| u32 flags; |
| unsigned int streams; |
| unsigned int duration[MCS_GROUP_RATES]; |
| }; |
| |
| struct minstrel_rate_stats { |
| /* current / last sampling period attempts/success counters */ |
| unsigned int attempts, last_attempts; |
| unsigned int success, last_success; |
| |
| /* total attempts/success counters */ |
| u64 att_hist, succ_hist; |
| |
| /* current throughput */ |
| unsigned int cur_tp; |
| |
| /* packet delivery probabilities */ |
| unsigned int cur_prob, probability; |
| |
| /* maximum retry counts */ |
| unsigned int retry_count; |
| unsigned int retry_count_rtscts; |
| |
| bool retry_updated; |
| u8 sample_skipped; |
| }; |
| |
| struct minstrel_mcs_group_data { |
| u8 index; |
| u8 column; |
| |
| /* bitfield of supported MCS rates of this group */ |
| u8 supported; |
| |
| /* selected primary rates */ |
| unsigned int max_tp_rate; |
| unsigned int max_tp_rate2; |
| unsigned int max_prob_rate; |
| |
| /* MCS rate statistics */ |
| struct minstrel_rate_stats rates[MCS_GROUP_RATES]; |
| }; |
| |
| struct minstrel_ht_sta { |
| /* ampdu length (average, per sampling interval) */ |
| unsigned int ampdu_len; |
| unsigned int ampdu_packets; |
| |
| /* ampdu length (EWMA) */ |
| unsigned int avg_ampdu_len; |
| |
| /* best throughput rate */ |
| unsigned int max_tp_rate; |
| |
| /* second best throughput rate */ |
| unsigned int max_tp_rate2; |
| |
| /* best probability rate */ |
| unsigned int max_prob_rate; |
| |
| /* time of last status update */ |
| unsigned long stats_update; |
| |
| /* overhead time in usec for each frame */ |
| unsigned int overhead; |
| unsigned int overhead_rtscts; |
| |
| unsigned int total_packets; |
| unsigned int sample_packets; |
| |
| /* tx flags to add for frames for this sta */ |
| u32 tx_flags; |
| |
| u8 sample_wait; |
| u8 sample_tries; |
| u8 sample_count; |
| u8 sample_slow; |
| |
| /* current MCS group to be sampled */ |
| u8 sample_group; |
| |
| /* MCS rate group info and statistics */ |
| struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS]; |
| }; |
| |
| struct minstrel_ht_sta_priv { |
| union { |
| struct minstrel_ht_sta ht; |
| struct minstrel_sta_info legacy; |
| }; |
| #ifdef CONFIG_MAC80211_DEBUGFS |
| struct dentry *dbg_stats; |
| #endif |
| void *ratelist; |
| void *sample_table; |
| bool is_ht; |
| }; |
| |
| void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); |
| void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); |
| |
| #endif |
