Kernel Platform Worker Support

[nibanks]

Description

Extracts/refactors some of the code in #4023 to support platform worker threads, which is a prereq for kernel xdp support.

Testing

CI/CD

Documentation

N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.67%. Comparing base (14810af) to head (7d7e3f2).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4605      +/-   ##
==========================================
- Coverage   87.22%   86.67%   -0.56%     
==========================================
  Files          56       56              
  Lines       17354    17354              
==========================================
- Hits        15137    15041      -96     
- Misses       2217     2313      +96     

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[nibanks]

Looks like the kernel BVTs are crashing. I will try to investigate later.

[nibanks]

Something seems broken in netperf runs. I can't tell if it's because of this or not. Needs to be investigated before merging.

[ami-GS]

Is the netperf result reliable? wsk related failure is really few. others are more

[nibanks]

Converted this back to draft, because we need to switch to using NtCreateIoCompletion, NtSetIoCompletion, and NtRemoveIoCompletionEx.

[mtfriesen]

Converted this back to draft, because we need to switch to using NtCreateIoCompletion, NtSetIoCompletion, and NtRemoveIoCompletionEx.

I suggest using the Zw variants for KM, unless QUIC is calling on behalf of the user mode thread calling QUIC, and all in the same thread context.