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Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure

From Andrew Lunn <andrew@lunn.ch>
Newsgroups linux.kernel
Subject Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure
Date 2017-08-31 00:10 +0200
Message-ID <ukjlp-5CT-45@gated-at.bofh.it> (permalink)
References <ukhjA-483-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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))
                                ndev->stats.rx_frame_errors++;

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

     Andrew

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Thread

DSA mv88e6xxx RX frame errors and TCP/IP RX failure Tim Harvey <tharvey@gateworks.com> - 2017-08-30 22:00 +0200
  Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Andrew Lunn <andrew@lunn.ch> - 2017-08-31 00:10 +0200
    Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Tim Harvey <tharvey@gateworks.com> - 2017-08-31 02:30 +0200
      Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Ilia Mirkin <imirkin@alum.mit.edu> - 2017-08-31 02:40 +0200
      Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Andrew Lunn <andrew@lunn.ch> - 2017-08-31 03:50 +0200
        Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Maxim Uvarov <muvarov@gmail.com> - 2017-08-31 11:30 +0200
        Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Tim Harvey <tharvey@gateworks.com> - 2017-08-31 17:40 +0200
          Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure Andrew Lunn <andrew@lunn.ch> - 2017-08-31 19:50 +0200
            Re: DSA mv88e6xxx RX frame errors and TCP/IP RX failure David Miller <davem@davemloft.net> - 2017-08-31 19:50 +0200

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