[FS#3260] reduced upload speeds with enabled LAN 'flow control rx/tx'
openwrt-bugs at lists.openwrt.org
Thu Jul 30 18:03:15 EDT 2020
THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY.
A new Flyspray task has been opened. Details are below.
User who did this - Andy Walsh (Andy2244)
Attached to Project - OpenWrt/LEDE Project
Summary - reduced upload speeds with enabled LAN 'flow control rx/tx'
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To -
Operating System - All
Severity - High
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Device: WRT-1200AC
Openwrt Version: SNAPSHOT r13982-e9f7923a1d
Kernel: 5.4.x, tried also 5.4.53
If i keep the default 'flow control rx/tx' setting enabled for any LAN port, my upload speeds drop from my max 38 Mbit/s to 10 Mbit/s. Same happens if i put a unmanaged switch behind the router, that has RX/TX enabled and any device behind the switch than gets the reduced 10 Mbit/s upload speeds. The download speeds are unaffected, only the upload speed drops.
Steps to reproduce:
Just disable/enable 'flow control' on the client side for any LAN port. This bug happens independent of client OS/Network card used. Just enable/disable "Flow Control" in the Win10 adapter property page, than do some upload tests.
mv88e6085 f1072004.mdio-mii:00 lan1: Link is Up - 1Gbps/Full - flow control rx/tx
mv88e6085 f1072004.mdio-mii:00 lan1: Link is Up - 1Gbps/Full - flow control off
PS: This worked fine before and i think started with the 5.4.x kernels on mvebu.
More information can be found at the following URL:
You are receiving this message because you have requested it from the Flyspray bugtracking system. If you did not expect this message or don't want to receive mails in future, you can change your notification settings at the URL shown above.
More information about the openwrt-bugs