[DPDK/ethdev Bug 1430] af_xdp: reset stats has no effect on imissed

[DPDK/ethdev Bug 1430] af_xdp: reset stats has no effect on imissed

[bugzilla]

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https://bugs.dpdk.org/show_bug.cgi?id=1430

            Bug ID: 1430
           Summary: af_xdp: reset stats has no effect on imissed
           Product: DPDK
           Version: 24.03
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: stephen@networkplumber.org
  Target Milestone: ---

Since the AF_XDP PMD queries the kernel to find the number of missed packets,
it does not handle the case where stats have been reset.

Something like:
        ...
        eth_stats_get()
              = stats->imissed was 5 packets
        eth_stats_reset()
        eth_stats_get()
              = stats->imissed will still be 5 packets

The driver needs to record the count in the reset handler and then
offset the read count on the next stats get.

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[DPDK/ethdev Bug 1430] af_xdp: reset stats has no effect on imissed

[bugzilla]

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https://bugs.dpdk.org/show_bug.cgi?id=1430

Thomas Monjalon (thomas@monjalon.net) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #1 from Thomas Monjalon (thomas@monjalon.net) ---
Resolved in http://git.dpdk.org/dpdk/commit/?id=3577b1ee97

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