Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
new file mode 100644
index 0000000000..4be0401f77
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -0,0 +1,202 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#ifndef __RC_MINSTREL_HT_H
+#define __RC_MINSTREL_HT_H
+
+#include <linux/bitfield.h>
+
+/* number of highest throughput rates to consider*/
+#define MAX_THR_RATES 4
+#define SAMPLE_COLUMNS	10	/* number of columns in sample table */
+
+/* scaled fraction values */
+#define MINSTREL_SCALE  12
+#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
+#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
+
+#define EWMA_LEVEL	96	/* ewma weighting factor [/EWMA_DIV] */
+#define EWMA_DIV	128
+
+/*
+ * Coefficients for moving average with noise filter (period=16),
+ * scaled by 10 bits
+ *
+ * a1 = exp(-pi * sqrt(2) / period)
+ * coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period)
+ * coeff3 = -sqr(a1)
+ * coeff1 = 1 - coeff2 - coeff3
+ */
+#define MINSTREL_AVG_COEFF1		(MINSTREL_FRAC(1, 1) - \
+					 MINSTREL_AVG_COEFF2 - \
+					 MINSTREL_AVG_COEFF3)
+#define MINSTREL_AVG_COEFF2		0x00001499
+#define MINSTREL_AVG_COEFF3		-0x0000092e
+
+/*
+ * The number of streams can be changed to 2 to reduce code
+ * size and memory footprint.
+ */
+#define MINSTREL_MAX_STREAMS		4
+#define MINSTREL_HT_STREAM_GROUPS	4 /* BW(=2) * SGI(=2) */
+#define MINSTREL_VHT_STREAM_GROUPS	6 /* BW(=3) * SGI(=2) */
+
+#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_LEGACY_GROUPS_NB	2
+#define MINSTREL_GROUPS_NB	(MINSTREL_HT_GROUPS_NB +	\
+				 MINSTREL_VHT_GROUPS_NB +	\
+				 MINSTREL_LEGACY_GROUPS_NB)
+
+#define MINSTREL_HT_GROUP_0	0
+#define MINSTREL_CCK_GROUP	(MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
+#define MINSTREL_OFDM_GROUP	(MINSTREL_CCK_GROUP + 1)
+#define MINSTREL_VHT_GROUP_0	(MINSTREL_OFDM_GROUP + 1)
+
+#define MCS_GROUP_RATES		10
+
+#define MI_RATE_IDX_MASK	GENMASK(3, 0)
+#define MI_RATE_GROUP_MASK	GENMASK(15, 4)
+
+#define MI_RATE(_group, _idx)				\
+	(FIELD_PREP(MI_RATE_GROUP_MASK, _group) |	\
+	 FIELD_PREP(MI_RATE_IDX_MASK, _idx))
+
+#define MI_RATE_IDX(_rate) FIELD_GET(MI_RATE_IDX_MASK, _rate)
+#define MI_RATE_GROUP(_rate) FIELD_GET(MI_RATE_GROUP_MASK, _rate)
+
+#define MINSTREL_SAMPLE_RATES		5 /* rates per sample type */
+#define MINSTREL_SAMPLE_INTERVAL	(HZ / 50)
+
+struct minstrel_priv {
+	struct ieee80211_hw *hw;
+	unsigned int cw_min;
+	unsigned int cw_max;
+	unsigned int max_retry;
+	unsigned int segment_size;
+	unsigned int update_interval;
+
+	u8 cck_rates[4];
+	u8 ofdm_rates[NUM_NL80211_BANDS][8];
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+	/*
+	 * enable fixed rate processing per RC
+	 *   - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx
+	 *   - write -1 to enable RC processing again
+	 *   - setting will be applied on next update
+	 */
+	u32 fixed_rate_idx;
+#endif
+};
+
+
+struct mcs_group {
+	u16 flags;
+	u8 streams;
+	u8 shift;
+	u8 bw;
+	u16 duration[MCS_GROUP_RATES];
+};
+
+extern const s16 minstrel_cck_bitrates[4];
+extern const s16 minstrel_ofdm_bitrates[8];
+extern const struct mcs_group minstrel_mcs_groups[];
+
+struct minstrel_rate_stats {
+	/* current / last sampling period attempts/success counters */
+	u16 attempts, last_attempts;
+	u16 success, last_success;
+
+	/* total attempts/success counters */
+	u32 att_hist, succ_hist;
+
+	/* prob_avg - moving average of prob */
+	u16 prob_avg;
+	u16 prob_avg_1;
+
+	/* maximum retry counts */
+	u8 retry_count;
+	u8 retry_count_rtscts;
+
+	bool retry_updated;
+};
+
+enum minstrel_sample_type {
+	MINSTREL_SAMPLE_TYPE_INC,
+	MINSTREL_SAMPLE_TYPE_JUMP,
+	MINSTREL_SAMPLE_TYPE_SLOW,
+	__MINSTREL_SAMPLE_TYPE_MAX
+};
+
+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_sample_category {
+	u8 sample_group;
+	u16 sample_rates[MINSTREL_SAMPLE_RATES];
+	u16 cur_sample_rates[MINSTREL_SAMPLE_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 overhead_legacy;
+	unsigned int overhead_legacy_rtscts;
+
+	unsigned int total_packets;
+	unsigned int sample_packets;
+
+	/* tx flags to add for frames for this sta */
+	u32 tx_flags;
+	bool use_short_preamble;
+	u8 band;
+
+	u8 sample_seq;
+	u16 sample_rate;
+
+	unsigned long sample_time;
+	struct minstrel_sample_category sample[__MINSTREL_SAMPLE_TYPE_MAX];
+
+	/* 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];
+};
+
+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_avg);
+
+#endif