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When the backlog queue fill up, the device does not respond over wlan reliably. Sometimes, the backlog is cleared after a few minutes, but in busy environments this takes far too long and gets the system into an unresponsive state. Pings are not responend, traffic is stalled. I experienced these issues on various Zyxel NWA 55 AXE as well as on an Acer Vero W6M in busy environments.
Djfe
reviewed
Sep 30, 2025
| # SPDX-License-Identifier: MIT | ||
| include $(TOPDIR)/rules.mk | ||
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| PKG_NAME:=ffac-mt7915-hotfix |
| define Package/$(PKG_NAME) | ||
| SECTION:=gluon | ||
| CATEGORY:=Gluon | ||
| TITLE:=reboot device if mt7915e driver shows known failure symptom |
| if [ "$backlog" -gt 50 ]; then | ||
| logger -s -t "ffac-mt7915-backlog" -p 5 "$phy_name: Backlog > 50 ($backlog) - restarting wifi" | ||
| wifi | ||
| wifi |
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copy paste issue: wifi twice in lines 9 and 10
this might prevent elif from working
| @@ -0,0 +1,15 @@ | |||
| #!/bin/sh | |||
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| for phy in /sys/kernel/debug/ieee80211/phy*; do | |||
| phy_name=$(basename "$phy") | ||
| backlog=$(iw phy "$phy_name" get txq | awk '/Backlog/ {print $2}') | ||
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| if [ "$backlog" -gt 50 ]; then |
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maybe set 50 as a variable so it can be adjusted above and then used here and in the logger message
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I suggest either using a value larger than 50 or only running wifi on second or third run discovering that a backlog has accumulated to prevent wifi from being restarted constantly (bad user experience since it disconnects all clients).
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This package triggers every 5 minutes and does not really improve the situation.. Except for creating some logging of it |
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When the backlog queue fill up, the device does not respond over wlan reliably. Sometimes, the backlog is cleared after a few minutes, but in busy environments this takes far too long and gets the system into an unresponsive state. Pings are not responend, traffic is stalled.
I experienced these issues on various Zyxel NWA 55 AXE as well as on an Acer Vero W6M in busy environments.
See also: openwrt/mt76#1009