[DPDK/ethdev Bug 1975] ntnic: virt queue data in BSS

[bugzilla at dpdk.org]

http://bugs.dpdk.org/show_bug.cgi?id=1975

            Bug ID: 1975
           Summary: ntnic: virt queue data in BSS
           Product: DPDK
           Version: 26.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: stephen at networkplumber.org
  Target Milestone: ---

Putting virtual queue data in static arrays has a number of problems.
- BSS memory is slower than hugepages because of TLB overhead.
  can cause performance loss in hot path.
- Hard coding size wastes space
- Data in BSS is not visible to secondary process.
  This PMD does not support primary/secondary, but if it did this would break.
- NUMA aware can not allocate on appropriate NUA node
- Cache alignment

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