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Date:   Thu, 31 Aug 2017 00:06:31 +0200
From:   Andrew Lunn <>
To:     Tim Harvey <>
Cc:     netdev <>,
        Vivien Didelot <>,
        "" <>
Subject: Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure

On Wed, Aug 30, 2017 at 12:53:56PM -0700, Tim Harvey wrote:
> Greetings,
> I'm seeing RX frame errors when using the mv88e6xxx DSA driver on
> 4.13-rc7. The board I'm using is a GW5904 [1] which has an IMX6 FEC
> MAC (eth0) connected via RGMII to a MV88E6176 with its downstream
> P0/P1/P2/P3 to front panel RJ45's (lan1-lan4).

Hi Tim

Can you confirm the counter is this one:

                       /* Report late collisions as a frame error. */
                        if (status & (BD_ENET_RX_NO | BD_ENET_RX_CL))

I don't see anywhere else frame errors are counted, but it would be
good to prove we are looking in the right place.


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