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_HT_STREAM_GROUPS 4 /* BW(=2) * SGI(=2) */ 18 #ifdef CONFIG_MAC80211_RC_MINSTREL_VHT 19 #define MINSTREL_VHT_STREAM_GROUPS 6 /* BW(=3) * SGI(=2) */ 20 #else 21 #define MINSTREL_VHT_STREAM_GROUPS 0 22 #endif 23 24 #define MINSTREL_HT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ 25 MINSTREL_HT_STREAM_GROUPS) 26 #define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ 27 MINSTREL_VHT_STREAM_GROUPS) 28 #define MINSTREL_CCK_GROUPS_NB 1 29 #define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \ 30 MINSTREL_VHT_GROUPS_NB + \ 31 MINSTREL_CCK_GROUPS_NB) 32 33 #define MINSTREL_HT_GROUP_0 0 34 #define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB) 35 #define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1) 36 37 #ifdef CONFIG_MAC80211_RC_MINSTREL_VHT 38 #define MCS_GROUP_RATES 10 39 #else 40 #define MCS_GROUP_RATES 8 41 #endif 42 43 struct mcs_group { 44 u32 flags; 45 unsigned int streams; 46 unsigned int duration[MCS_GROUP_RATES]; 47 }; 48 49 extern const struct mcs_group minstrel_mcs_groups[]; 50 51 struct minstrel_mcs_group_data { 52 u8 index; 53 u8 column; 54 55 /* sorted rate set within a MCS group*/ 56 u16 max_group_tp_rate[MAX_THR_RATES]; 57 u16 max_group_prob_rate; 58 59 /* MCS rate statistics */ 60 struct minstrel_rate_stats rates[MCS_GROUP_RATES]; 61 }; 62 63 struct minstrel_ht_sta { 64 struct ieee80211_sta *sta; 65 66 /* ampdu length (average, per sampling interval) */ 67 unsigned int ampdu_len; 68 unsigned int ampdu_packets; 69 70 /* ampdu length (EWMA) */ 71 unsigned int avg_ampdu_len; 72 73 /* overall sorted rate set */ 74 u16 max_tp_rate[MAX_THR_RATES]; 75 u16 max_prob_rate; 76 77 /* time of last status update */ 78 unsigned long last_stats_update; 79 80 /* overhead time in usec for each frame */ 81 unsigned int overhead; 82 unsigned int overhead_rtscts; 83 84 unsigned int total_packets; 85 unsigned int sample_packets; 86 87 /* tx flags to add for frames for this sta */ 88 u32 tx_flags; 89 90 u8 sample_wait; 91 u8 sample_tries; 92 u8 sample_count; 93 u8 sample_slow; 94 95 /* current MCS group to be sampled */ 96 u8 sample_group; 97 98 u8 cck_supported; 99 u8 cck_supported_short; 100 101 /* Bitfield of supported MCS rates of all groups */ 102 u16 supported[MINSTREL_GROUPS_NB]; 103 104 /* MCS rate group info and statistics */ 105 struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB]; 106 }; 107 108 struct minstrel_ht_sta_priv { 109 union { 110 struct minstrel_ht_sta ht; 111 struct minstrel_sta_info legacy; 112 }; 113 #ifdef CONFIG_MAC80211_DEBUGFS 114 struct dentry *dbg_stats; 115 struct dentry *dbg_stats_csv; 116 #endif 117 void *ratelist; 118 void *sample_table; 119 bool is_ht; 120 }; 121 122 void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); 123 void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); 124 int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, 125 int prob_ewma); 126 127 #endif 128