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Release 4.11 net/mac80211/rc80211_minstrel_ht.h

Directory: net/mac80211
/*
 * 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;
	};
#ifdef CONFIG_MAC80211_DEBUGFS
	
struct dentry *dbg_stats;
	
struct dentry *dbg_stats_csv;
#endif
	
void *ratelist;
	
void *sample_table;
	
bool is_ht;
};

void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
			   int prob_ewma);

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Felix Fietkau21767.81%430.77%
Karl Beldan6219.38%323.08%
Thomas Huehn3410.62%538.46%
John W. Linville72.19%17.69%
Total320100.00%13100.00%
Directory: net/mac80211
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