UM API to write into a ring buffer map. #3689
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Description
Fixes #3572.
Add a new API in eBPF API.dll to write into a ring buffer map from user mode. This API issues an IOCTL which calls
bpf_ring_buffer_outputfunction to write user specified data into the ring buffer.Testing
Updated unit and api tests to write messages into ring buffer interleaved with events that invoke eBPF programs (which in turn write into the same ring buffer).
Documentation
No documentation impact.
Installation
No installation impact.