1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org> 4 */ 5 6 #ifndef __RC_MINSTREL_HT_H 7 #define __RC_MINSTREL_HT_H 8 9 /* 10 * The number of streams can be changed to 2 to reduce code 11 * size and memory footprint. 12 */ 13 #define MINSTREL_MAX_STREAMS 4 14 #define MINSTREL_HT_STREAM_GROUPS 4 /* BW(=2) * SGI(=2) */ 15 #define MINSTREL_VHT_STREAM_GROUPS 6 /* BW(=3) * SGI(=2) */ 16 17 #define MINSTREL_HT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ 18 MINSTREL_HT_STREAM_GROUPS) 19 #define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ 20 MINSTREL_VHT_STREAM_GROUPS) 21 #define MINSTREL_CCK_GROUPS_NB 1 22 #define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \ 23 MINSTREL_VHT_GROUPS_NB + \ 24 MINSTREL_CCK_GROUPS_NB) 25 26 #define MINSTREL_HT_GROUP_0 0 27 #define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB) 28 #define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1) 29 30 #define MCS_GROUP_RATES 10 31 32 struct mcs_group { 33 u16 flags; 34 u8 streams; 35 u8 shift; 36 u8 bw; 37 u16 duration[MCS_GROUP_RATES]; 38 }; 39 40 extern const struct mcs_group minstrel_mcs_groups[]; 41 42 struct minstrel_mcs_group_data { 43 u8 index; 44 u8 column; 45 46 /* sorted rate set within a MCS group*/ 47 u16 max_group_tp_rate[MAX_THR_RATES]; 48 u16 max_group_prob_rate; 49 50 /* MCS rate statistics */ 51 struct minstrel_rate_stats rates[MCS_GROUP_RATES]; 52 }; 53 54 enum minstrel_sample_mode { 55 MINSTREL_SAMPLE_IDLE, 56 MINSTREL_SAMPLE_ACTIVE, 57 MINSTREL_SAMPLE_PENDING, 58 }; 59 60 struct minstrel_ht_sta { 61 struct ieee80211_sta *sta; 62 63 /* ampdu length (average, per sampling interval) */ 64 unsigned int ampdu_len; 65 unsigned int ampdu_packets; 66 67 /* ampdu length (EWMA) */ 68 unsigned int avg_ampdu_len; 69 70 /* overall sorted rate set */ 71 u16 max_tp_rate[MAX_THR_RATES]; 72 u16 max_prob_rate; 73 74 /* time of last status update */ 75 unsigned long last_stats_update; 76 77 /* overhead time in usec for each frame */ 78 unsigned int overhead; 79 unsigned int overhead_rtscts; 80 81 unsigned int total_packets_last; 82 unsigned int total_packets_cur; 83 unsigned int total_packets; 84 unsigned int sample_packets; 85 86 /* tx flags to add for frames for this sta */ 87 u32 tx_flags; 88 89 u8 sample_wait; 90 u8 sample_tries; 91 u8 sample_count; 92 u8 sample_slow; 93 94 enum minstrel_sample_mode sample_mode; 95 u16 sample_rate; 96 97 /* current MCS group to be sampled */ 98 u8 sample_group; 99 100 u8 cck_supported; 101 u8 cck_supported_short; 102 103 /* Bitfield of supported MCS rates of all groups */ 104 u16 supported[MINSTREL_GROUPS_NB]; 105 106 /* MCS rate group info and statistics */ 107 struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB]; 108 }; 109 110 struct minstrel_ht_sta_priv { 111 union { 112 struct minstrel_ht_sta ht; 113 struct minstrel_sta_info legacy; 114 }; 115 void *ratelist; 116 void *sample_table; 117 bool is_ht; 118 }; 119 120 void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); 121 int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, 122 int prob_ewma); 123 124 #endif 125