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/*
* Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __RC_MINSTREL_HT_H
#define __RC_MINSTREL_HT_H
/*
* The number of streams can be changed to 2 to reduce code
* size and memory footprint.
*/
#define MINSTREL_MAX_STREAMS 3
#define MINSTREL_HT_STREAM_GROUPS 4 /* BW(=2) * SGI(=2) */
#ifdef CONFIG_MAC80211_RC_MINSTREL_VHT
#define MINSTREL_VHT_STREAM_GROUPS 6 /* BW(=3) * SGI(=2) */
#else
#define MINSTREL_VHT_STREAM_GROUPS 0
#endif
#define MINSTREL_HT_GROUPS_NB (MINSTREL_MAX_STREAMS * \
MINSTREL_HT_STREAM_GROUPS)
#define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \
MINSTREL_VHT_STREAM_GROUPS)
#define MINSTREL_CCK_GROUPS_NB 1
#define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \
MINSTREL_VHT_GROUPS_NB + \
MINSTREL_CCK_GROUPS_NB)
#define MINSTREL_HT_GROUP_0 0
#define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
#define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1)
#ifdef CONFIG_MAC80211_RC_MINSTREL_VHT
#define MCS_GROUP_RATES 10
#else
#define MCS_GROUP_RATES 8
#endif
struct mcs_group {
u32 flags;
unsigned int streams;
unsigned int duration[MCS_GROUP_RATES];
};
extern const struct mcs_group minstrel_mcs_groups[];
struct minstrel_mcs_group_data {
u8 index;
u8 column;
/* sorted rate set within a MCS group*/
u16 max_group_tp_rate[MAX_THR_RATES];
u16 max_group_prob_rate;
/* MCS rate statistics */
struct minstrel_rate_stats rates[MCS_GROUP_RATES];
};
struct minstrel_ht_sta {
struct ieee80211_sta *sta;
/* ampdu length (average, per sampling interval) */
unsigned int ampdu_len;
unsigned int ampdu_packets;
/* ampdu length (EWMA) */
unsigned int avg_ampdu_len;
/* overall sorted rate set */
u16 max_tp_rate[MAX_THR_RATES];
u16 max_prob_rate;
/* time of last status update */
unsigned long last_stats_update;
/* overhead time in usec for each frame */
unsigned int overhead;
unsigned int overhead_rtscts;
unsigned int total_packets;
unsigned int sample_packets;
/* tx flags to add for frames for this sta */
u32 tx_flags;
u8 sample_wait;
u8 sample_tries;
u8 sample_count;
u8 sample_slow;
/* current MCS group to be sampled */
u8 sample_group;
u8 cck_supported;
u8 cck_supported_short;
/* Bitfield of supported MCS rates of all groups */
u16 supported[MINSTREL_GROUPS_NB];
/* MCS rate group info and statistics */
struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
};
struct minstrel_ht_sta_priv {
union {
struct minstrel_ht_sta ht;
struct minstrel_sta_info legacy;
};
void *ratelist;
void *sample_table;
bool is_ht;
};
void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
int prob_ewma);
#endif
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