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domenico
2025-06-24 13:14:22 +02:00
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package/kernel/mac80211/patches/subsys/342-mac80211-minstrel_ht-improve-sample-rate-selection.patch Normal file
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From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 26 Dec 2020 19:12:22 +0100
Subject: [PATCH] mac80211: minstrel_ht: improve sample rate selection
Always allow sampling of rates faster than the primary max throughput rate.
When the second max_tp_rate is higher than the first one, sample attempts were
previously skipped, potentially causing rate control to get stuck at a slightly
lower rate
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -1379,13 +1379,13 @@ minstrel_get_sample_rate(struct minstrel
mrs = &mg->rates[sample_idx];
sample_idx += sample_group * MCS_GROUP_RATES;
- /* Set tp_rate1, tp_rate2 to the highest / second highest max_tp_rate */
+ tp_rate1 = mi->max_tp_rate[0];
+
+ /* Set tp_rate2 to the second highest max_tp_rate */
if (minstrel_get_duration(mi->max_tp_rate[0]) >
minstrel_get_duration(mi->max_tp_rate[1])) {
- tp_rate1 = mi->max_tp_rate[1];
tp_rate2 = mi->max_tp_rate[0];
} else {
- tp_rate1 = mi->max_tp_rate[0];
tp_rate2 = mi->max_tp_rate[1];
}