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Date:   Tue, 19 Dec 2017 13:25:23 +0100
From:   Michal Kubecek <mkubecek@...e.cz>
To:     Jonathan Woithe <jwoithe@...ad.com.au>
Cc:     Holger Hoffstätte 
        <holger@...lied-asynchrony.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: r8169 regression: UDP packets dropped intermittantly

On Tue, Dec 19, 2017 at 04:15:32PM +1030, Jonathan Woithe wrote:
> This clearly indicates that not every card using the r8169 driver is
> vulnerable to the problem.  It also explains why Holger was unable to
> reproduce the result on his system: the PCIe cards do not appear to suffer
> from the problem.  Most likely the PCI RTL-8169 chip is affected, but newer
> PCIe variations do not.  However, obviously more testing will be required
> with a wider variety of cards if this inference is to hold up.

The r8169 driver supports many slightly different variants of the chip.
To identify your variant more precisely, look for a line like

  r8169 0000:02:00.0 eth0: RTL8168evl/8111evl at 0xffffc90003135000, d4:3d:7e:2a:30:08, XID 0c900800 IRQ 38

in kernel log.

Michal Kubecek

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