1 /* 2 * Copyright (C) 2010 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_HT_H 10 #define __RC_MINSTREL_HT_H 11 12 /* 13 * The number of streams can be changed to 2 to reduce code 14 * size and memory footprint. 15 */ 16 #define MINSTREL_MAX_STREAMS 3 17 #define MINSTREL_STREAM_GROUPS 4 18 19 #define MCS_GROUP_RATES 8 20 21 struct mcs_group { 22 u32 flags; 23 unsigned int streams; 24 unsigned int duration[MCS_GROUP_RATES]; 25 }; 26 27 extern const struct mcs_group minstrel_mcs_groups[]; 28 29 struct minstrel_mcs_group_data { 30 u8 index; 31 u8 column; 32 33 /* bitfield of supported MCS rates of this group */ 34 u8 supported; 35 36 /* sorted rate set within a MCS group*/ 37 u8 max_group_tp_rate[MAX_THR_RATES]; 38 u8 max_group_prob_rate; 39 40 /* MCS rate statistics */ 41 struct minstrel_rate_stats rates[MCS_GROUP_RATES]; 42 }; 43 44 struct minstrel_ht_sta { 45 struct ieee80211_sta *sta; 46 47 /* ampdu length (average, per sampling interval) */ 48 unsigned int ampdu_len; 49 unsigned int ampdu_packets; 50 51 /* ampdu length (EWMA) */ 52 unsigned int avg_ampdu_len; 53 54 /* overall sorted rate set */ 55 u8 max_tp_rate[MAX_THR_RATES]; 56 u8 max_prob_rate; 57 58 /* time of last status update */ 59 unsigned long stats_update; 60 61 /* overhead time in usec for each frame */ 62 unsigned int overhead; 63 unsigned int overhead_rtscts; 64 65 unsigned int total_packets; 66 unsigned int sample_packets; 67 68 /* tx flags to add for frames for this sta */ 69 u32 tx_flags; 70 71 u8 sample_wait; 72 u8 sample_tries; 73 u8 sample_count; 74 u8 sample_slow; 75 76 /* current MCS group to be sampled */ 77 u8 sample_group; 78 79 u8 cck_supported; 80 u8 cck_supported_short; 81 82 /* MCS rate group info and statistics */ 83 struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS + 1]; 84 }; 85 86 struct minstrel_ht_sta_priv { 87 union { 88 struct minstrel_ht_sta ht; 89 struct minstrel_sta_info legacy; 90 }; 91 #ifdef CONFIG_MAC80211_DEBUGFS 92 struct dentry *dbg_stats; 93 #endif 94 void *ratelist; 95 void *sample_table; 96 bool is_ht; 97 }; 98 99 void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); 100 void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); 101 102 #endif 103