netdev - About r8169 regression 5.4

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Message-ID: <b46d29d8-faf6-351e-0d9f-a4d4c043a54c@gmail.com>
Date:   Fri, 14 Feb 2020 19:21:30 +0200
From:   Vincas Dargis <vindrg@...il.com>
To:     netdev@...r.kernel.org
Subject: About r8169 regression 5.4

Hi,

I've found similar issue I have myself since 5.4 on mailing list archive [0], for this device:

05:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit 
Ethernet Controller (rev 12)
         Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller


It works fine as long as I select 5.3 in Grub (it seems no longer maintained in Debian Sid though...)

I see number of commits in net/etherenet/realtek tree, not sure if fix is there, or do we need 
another fix for this particular device? I've keep testing latest Debian kernel updates (latest is 
5.4.19-1), and no good news yet.

There's Debian bug report [1] which might contain more information.

Some extra info:

$ sudo ethtool -i enp5s0f1
driver: r8169
version:
firmware-version: rtl8411-2_0.0.1 07/08/13
expansion-rom-version:
bus-info: 0000:05:00.1
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no


$ sudo mii-tool -v enp5s0f1
enp5s0f1: negotiated 1000baseT-FD flow-control, link ok
   product info: vendor 00:07:32, model 0 rev 0
   basic mode:   autonegotiation enabled
   basic status: autonegotiation complete, link ok
   capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
   advertising:  1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
   link partner: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control


[0] https://lkml.org/lkml/2019/11/30/119
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=947685