From 161b22d103decd82868e8e3c3fe09b88cf64724c Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 10 Nov 2022 14:46:21 +0100 Subject: [PATCH] mac80211: fix mesh airtime link metric estimation fix reading the per-packet rate on devices with firmware rate control Signed-off-by: Felix Fietkau --- ...x-mesh-airtime-link-metric-estimatin.patch | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 package/kernel/mac80211/patches/subsys/346-v6.0-wifi-mac80211-fix-mesh-airtime-link-metric-estimatin.patch diff --git a/package/kernel/mac80211/patches/subsys/346-v6.0-wifi-mac80211-fix-mesh-airtime-link-metric-estimatin.patch b/package/kernel/mac80211/patches/subsys/346-v6.0-wifi-mac80211-fix-mesh-airtime-link-metric-estimatin.patch new file mode 100644 index 00000000000..7185a7fed6e --- /dev/null +++ b/package/kernel/mac80211/patches/subsys/346-v6.0-wifi-mac80211-fix-mesh-airtime-link-metric-estimatin.patch @@ -0,0 +1,36 @@ +From: Aditya Kumar Singh +Date: Fri, 1 Jul 2022 19:06:11 +0530 +Subject: [PATCH] wifi: mac80211: fix mesh airtime link metric estimating + +ieee80211s_update_metric function uses sta_set_rate_info_tx +function to get struct rate_info data from ieee80211_tx_rate +struct, present in ieee80211_sta->deflink.tx_stats. However, +drivers can skip tx rate calculation by setting rate idx as +-1. Such drivers provides rate_info directly and hence +ieee80211s metric is updated incorrectly since ieee80211_tx_rate +has inconsistent data. + +Add fix to use rate_info directly if present instead of +sta_set_rate_info_tx for updating ieee80211s metric. + +Signed-off-by: Aditya Kumar Singh +Link: https://lore.kernel.org/r/20220701133611.544-1-quic_adisi@quicinc.com +Signed-off-by: Johannes Berg +--- + +--- a/net/mac80211/mesh_hwmp.c ++++ b/net/mac80211/mesh_hwmp.c +@@ -310,7 +310,12 @@ void ieee80211s_update_metric(struct iee + LINK_FAIL_THRESH) + mesh_plink_broken(sta); + +- sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, &rinfo); ++ /* use rate info set by the driver directly if present */ ++ if (st->rate) ++ rinfo = sta->tx_stats.last_rate_info; ++ else ++ sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate, &rinfo); ++ + ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, + cfg80211_calculate_bitrate(&rinfo)); + } -- 2.30.2