1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
6 #ifndef __RC_MINSTREL_HT_H
7 #define __RC_MINSTREL_HT_H
10 * The number of streams can be changed to 2 to reduce code
11 * size and memory footprint.
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) */
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)
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)
30 #define MCS_GROUP_RATES 10
37 u16 duration[MCS_GROUP_RATES];
40 extern const struct mcs_group minstrel_mcs_groups[];
42 struct minstrel_mcs_group_data {
46 /* sorted rate set within a MCS group*/
47 u16 max_group_tp_rate[MAX_THR_RATES];
48 u16 max_group_prob_rate;
50 /* MCS rate statistics */
51 struct minstrel_rate_stats rates[MCS_GROUP_RATES];
54 enum minstrel_sample_mode {
56 MINSTREL_SAMPLE_ACTIVE,
57 MINSTREL_SAMPLE_PENDING,
60 struct minstrel_ht_sta {
61 struct ieee80211_sta *sta;
63 /* ampdu length (average, per sampling interval) */
64 unsigned int ampdu_len;
65 unsigned int ampdu_packets;
67 /* ampdu length (EWMA) */
68 unsigned int avg_ampdu_len;
70 /* overall sorted rate set */
71 u16 max_tp_rate[MAX_THR_RATES];
74 /* time of last status update */
75 unsigned long last_stats_update;
77 /* overhead time in usec for each frame */
78 unsigned int overhead;
79 unsigned int overhead_rtscts;
81 unsigned int total_packets_last;
82 unsigned int total_packets_cur;
83 unsigned int total_packets;
84 unsigned int sample_packets;
86 /* tx flags to add for frames for this sta */
94 enum minstrel_sample_mode sample_mode;
97 /* current MCS group to be sampled */
101 u8 cck_supported_short;
103 /* Bitfield of supported MCS rates of all groups */
104 u16 supported[MINSTREL_GROUPS_NB];
106 /* MCS rate group info and statistics */
107 struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
110 struct minstrel_ht_sta_priv {
112 struct minstrel_ht_sta ht;
113 struct minstrel_sta_info legacy;
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,