Intel i219 reset hang

https://bugs.dpdk.org/show_bug.cgi?id=299

            Bug ID: 299
           Summary: Intel i219 reset hang
           Product: DPDK
           Version: 18.02
          Hardware: All
                OS: All
            Status: CONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: [email protected]
          Reporter: [email protected]

Target Milestone: ---

Created attachment 43
--> https://bugs.dpdk.org/attachment.cgi?id=43&action=edit
i219 reset hang patch

We are facing issues (tx hang) with the i219 NIC when used along with DPDK, mostly at the time of close. Post a close, when the application comes back up again, the NIC can't receive or transmit packets.

After sending requests to mailing lists and to the maintainer, I ported the following kernel fix myself and the fix seems to work.

https://patchwork.ozlabs.org/patch/479888/

Patch is attached.

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