From: Felix Fietkau Date: Thu, 17 Jun 2021 10:40:15 +0000 (+0200) Subject: mac80211: fix minstrel sample time check X-Git-Tag: v21.02.0-rc4~77 X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=3839a4c7e98529362cffea70661a450fb072b360 mac80211: fix minstrel sample time check We need to skip sampling if the next sample time is after jiffies, not before. This patch fixes an issue where in some cases only very little sampling (or none at all) is performed, leading to really bad data rates Signed-off-by: Felix Fietkau --- diff --git a/package/kernel/mac80211/patches/subsys/377-mac80211-minstrel_ht-fix-sample-time-check.patch b/package/kernel/mac80211/patches/subsys/377-mac80211-minstrel_ht-fix-sample-time-check.patch new file mode 100644 index 0000000000..787254b4df --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/377-mac80211-minstrel_ht-fix-sample-time-check.patch @@ -0,0 +1,23 @@ +From: Felix Fietkau +Date: Thu, 17 Jun 2021 12:05:54 +0200 +Subject: [PATCH] mac80211: minstrel_ht: fix sample time check + +We need to skip sampling if the next sample time is after jiffies, not before. +This patch fixes an issue where in some cases only very little sampling (or none +at all) is performed, leading to really bad data rates + +Fixes: 80d55154b2f8 ("mac80211: minstrel_ht: significantly redesign the rate probing strategy") +Signed-off-by: Felix Fietkau +--- + +--- a/net/mac80211/rc80211_minstrel_ht.c ++++ b/net/mac80211/rc80211_minstrel_ht.c +@@ -1498,7 +1498,7 @@ minstrel_ht_get_rate(void *priv, struct + (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) + return; + +- if (time_is_before_jiffies(mi->sample_time)) ++ if (time_is_after_jiffies(mi->sample_time)) + return; + + mi->sample_time = jiffies + MINSTREL_SAMPLE_INTERVAL;