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authorFelix Fietkau <nbd@nbd.name>2021-01-15 15:02:36 +0300
committerJohannes Berg <johannes.berg@intel.com>2021-01-22 11:11:37 +0300
commitcbda98c710d273b2725e2b551d929879bff93c1d (patch)
tree4f60b7ca3fede34996c17beca7f9a5bbdf228dba /net/mac80211/rc80211_minstrel_ht.h
parenta7844a53846017c34804b0a22bbda855cb08dd7c (diff)
downloadlinux-cbda98c710d273b2725e2b551d929879bff93c1d.tar.xz
mac80211: remove legacy minstrel rate control
Now that minstrel_ht supports legacy rates, it is no longer needed Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20210115120242.89616-4-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht.h')
-rw-r--r--net/mac80211/rc80211_minstrel_ht.h79
1 files changed, 73 insertions, 6 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
index 3321630ebeea..25c3664bddde 100644
--- a/net/mac80211/rc80211_minstrel_ht.h
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -6,6 +6,33 @@
#ifndef __RC_MINSTREL_HT_H
#define __RC_MINSTREL_HT_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.
@@ -30,6 +57,32 @@
#define MCS_GROUP_RATES 10
+struct minstrel_priv {
+ struct ieee80211_hw *hw;
+ bool has_mrr;
+ bool new_avg;
+ u32 sample_switch;
+ 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;
@@ -42,6 +95,26 @@ 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;
+
+ u8 sample_skipped;
+ bool retry_updated;
+};
+
struct minstrel_mcs_group_data {
u8 index;
u8 column;
@@ -111,12 +184,6 @@ struct minstrel_ht_sta {
struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
};
-struct minstrel_ht_sta_priv {
- struct minstrel_ht_sta ht;
- void *ratelist;
- void *sample_table;
-};
-
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);