3 Replies Latest reply on Apr 8, 2017 11:23 PM by Intel Corporation

    82599 VF trigger master abort

    RyanMile

      Hi experts,

       

      I am working on 82599ES in Linux Host and FreeBSD Guest.

      But an error happened when PF detected one VF is bad(say VF PCI status is PCI_STATUS_REC_MASTER_ABORT),

      it would issue a VF FLR. Then the VF in Guest can not triger the TX/RX MSI-x interrupt.

      I checked the EIMS in Guest, it showed the value is "0x0". So I changed the value to "0x1" to enable the TX/RX MSI-x,

      but unfortunately the changing did not take effect. Read the EIMS value still is "0x0".

       

      So my questions are:

      1. what is VF master abort?

      2. what could I do (for PF and VF) when VF master abort happened?

       

      Thanks

        • 1. Re: 82599 VF trigger master abort
          Intel Corporation
          This message was posted on behalf of Intel Corporation

          Hi RyanMile,

          Thank you for posting in Wired Ethernet Commmunity.

          While we're checking your concern, please share the PF and VF driver version loaded in your system.


          regards,
          Vince

           
           

          • 2. Re: 82599 VF trigger master abort
            RyanMile

            Hi Vince,

             

            My environment is:

            Host: CentOS7.2 Linux 3.10.0-327.28.2.el7.x86_64

            PF version is:

            #ethtool -i enp4s0f0

            driver: ixgbe

            version: 4.0.1-k-rh7.2

            firmware-version: 0x1bab0001

            bus-info: 0000:04:00.0

            supports-statistics: yes

            supports-test: yes

            supports-eeprom-access: yes

            supports-register-dump: yes

            supports-priv-flags: no

             

            Guest: FreeBSD 10.1

            VF version is: 1.1.4 (obtained from source code: ixv.c)

             

            FYI, I found the TxRx queue never disabled in Guest when ixv_disable_queue executed (write to EIMC).

            So I turned off the TxRx MSI-x bit of EIAM in ixv VF driver. After that, in my test, the master abort never happened.

            I am not sure if this EIAM and EIMC will cause VF master abort.

             

             

            Thanks for your attention.

            • 3. Re: 82599 VF trigger master abort
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              Hi RyanMile, Thanks for providing the update, please let us know if you still have other query regarding 82599.

              regards,
              Vince