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6#ifndef __RC_MINSTREL_HT_H
7#define __RC_MINSTREL_HT_H
8
9#include <linux/bitfield.h>
10
11
12#define MAX_THR_RATES 4
13#define SAMPLE_COLUMNS 10
14
15
16#define MINSTREL_SCALE 12
17#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
18#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
19
20#define EWMA_LEVEL 96
21#define EWMA_DIV 128
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30
31
32#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \
33 MINSTREL_AVG_COEFF2 - \
34 MINSTREL_AVG_COEFF3)
35#define MINSTREL_AVG_COEFF2 0x00001499
36#define MINSTREL_AVG_COEFF3 -0x0000092e
37
38
39
40
41
42#define MINSTREL_MAX_STREAMS 4
43#define MINSTREL_HT_STREAM_GROUPS 4
44#define MINSTREL_VHT_STREAM_GROUPS 6
45
46#define MINSTREL_HT_GROUPS_NB (MINSTREL_MAX_STREAMS * \
47 MINSTREL_HT_STREAM_GROUPS)
48#define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \
49 MINSTREL_VHT_STREAM_GROUPS)
50#define MINSTREL_LEGACY_GROUPS_NB 2
51#define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \
52 MINSTREL_VHT_GROUPS_NB + \
53 MINSTREL_LEGACY_GROUPS_NB)
54
55#define MINSTREL_HT_GROUP_0 0
56#define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
57#define MINSTREL_OFDM_GROUP (MINSTREL_CCK_GROUP + 1)
58#define MINSTREL_VHT_GROUP_0 (MINSTREL_OFDM_GROUP + 1)
59
60#define MCS_GROUP_RATES 10
61
62#define MI_RATE_IDX_MASK GENMASK(3, 0)
63#define MI_RATE_GROUP_MASK GENMASK(15, 4)
64
65#define MI_RATE(_group, _idx) \
66 (FIELD_PREP(MI_RATE_GROUP_MASK, _group) | \
67 FIELD_PREP(MI_RATE_IDX_MASK, _idx))
68
69#define MI_RATE_IDX(_rate) FIELD_GET(MI_RATE_IDX_MASK, _rate)
70#define MI_RATE_GROUP(_rate) FIELD_GET(MI_RATE_GROUP_MASK, _rate)
71
72#define MINSTREL_SAMPLE_RATES 5
73#define MINSTREL_SAMPLE_INTERVAL (HZ / 50)
74
75struct minstrel_priv {
76 struct ieee80211_hw *hw;
77 bool has_mrr;
78 unsigned int cw_min;
79 unsigned int cw_max;
80 unsigned int max_retry;
81 unsigned int segment_size;
82 unsigned int update_interval;
83
84 u8 cck_rates[4];
85 u8 ofdm_rates[NUM_NL80211_BANDS][8];
86
87#ifdef CONFIG_MAC80211_DEBUGFS
88
89
90
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92
93
94 u32 fixed_rate_idx;
95#endif
96};
97
98
99struct mcs_group {
100 u16 flags;
101 u8 streams;
102 u8 shift;
103 u8 bw;
104 u16 duration[MCS_GROUP_RATES];
105};
106
107extern const s16 minstrel_cck_bitrates[4];
108extern const s16 minstrel_ofdm_bitrates[8];
109extern const struct mcs_group minstrel_mcs_groups[];
110
111struct minstrel_rate_stats {
112
113 u16 attempts, last_attempts;
114 u16 success, last_success;
115
116
117 u32 att_hist, succ_hist;
118
119
120 u16 prob_avg;
121 u16 prob_avg_1;
122
123
124 u8 retry_count;
125 u8 retry_count_rtscts;
126
127 bool retry_updated;
128};
129
130enum minstrel_sample_type {
131 MINSTREL_SAMPLE_TYPE_INC,
132 MINSTREL_SAMPLE_TYPE_JUMP,
133 MINSTREL_SAMPLE_TYPE_SLOW,
134 __MINSTREL_SAMPLE_TYPE_MAX
135};
136
137struct minstrel_mcs_group_data {
138 u8 index;
139 u8 column;
140
141
142 u16 max_group_tp_rate[MAX_THR_RATES];
143 u16 max_group_prob_rate;
144
145
146 struct minstrel_rate_stats rates[MCS_GROUP_RATES];
147};
148
149struct minstrel_sample_category {
150 u8 sample_group;
151 u16 sample_rates[MINSTREL_SAMPLE_RATES];
152 u16 cur_sample_rates[MINSTREL_SAMPLE_RATES];
153};
154
155struct minstrel_ht_sta {
156 struct ieee80211_sta *sta;
157
158
159 unsigned int ampdu_len;
160 unsigned int ampdu_packets;
161
162
163 unsigned int avg_ampdu_len;
164
165
166 u16 max_tp_rate[MAX_THR_RATES];
167 u16 max_prob_rate;
168
169
170 unsigned long last_stats_update;
171
172
173 unsigned int overhead;
174 unsigned int overhead_rtscts;
175 unsigned int overhead_legacy;
176 unsigned int overhead_legacy_rtscts;
177
178 unsigned int total_packets;
179 unsigned int sample_packets;
180
181
182 u32 tx_flags;
183
184 u8 band;
185
186 u8 sample_seq;
187 u16 sample_rate;
188
189 unsigned long sample_time;
190 struct minstrel_sample_category sample[__MINSTREL_SAMPLE_TYPE_MAX];
191
192
193 u16 supported[MINSTREL_GROUPS_NB];
194
195
196 struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
197};
198
199void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
200int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
201 int prob_avg);
202
203#endif
204