3a12c6679e
Legacy minstrel is essentially unmaintained and was showing poor performance Replace it with minstrel_ht and improve rate selection and sampling behavior Signed-off-by: Felix Fietkau <nbd@nbd.name>
32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Sat, 26 Dec 2020 19:12:22 +0100
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Subject: [PATCH] mac80211: minstrel_ht: improve sample rate selection
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Always allow sampling of rates faster than the primary max throughput rate.
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When the second max_tp_rate is higher than the first one, sample attempts were
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previously skipped, potentially causing rate control to get stuck at a slightly
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lower rate
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/net/mac80211/rc80211_minstrel_ht.c
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+++ b/net/mac80211/rc80211_minstrel_ht.c
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@@ -1379,13 +1379,13 @@ minstrel_get_sample_rate(struct minstrel
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mrs = &mg->rates[sample_idx];
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sample_idx += sample_group * MCS_GROUP_RATES;
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- /* Set tp_rate1, tp_rate2 to the highest / second highest max_tp_rate */
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+ tp_rate1 = mi->max_tp_rate[0];
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+
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+ /* Set tp_rate2 to the second highest max_tp_rate */
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if (minstrel_get_duration(mi->max_tp_rate[0]) >
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minstrel_get_duration(mi->max_tp_rate[1])) {
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- tp_rate1 = mi->max_tp_rate[1];
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tp_rate2 = mi->max_tp_rate[0];
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} else {
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- tp_rate1 = mi->max_tp_rate[0];
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tp_rate2 = mi->max_tp_rate[1];
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}
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