/* * 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