Complete, self-contained Phase 7 / CORE-C12 module:
- Packet type and worker_loop helper for the per-NIC read
path with proper error handling on worker exit.
- ReaderPool::spawn takes a Vec<File> and spawns one worker
thread per file. Each thread blocks on a blocking read,
sends the bytes through an mpsc::Sender, and the main
smolnetd event loop drains the receiver on each iteration.
- drain (non-blocking) and recv (blocking) methods on the
receiver. Both return cleanly when the channel disconnects
(worker exited).
- Drop impl joins the worker threads; the pool is fully
owned by a single thread, only the I/O is parallel.
- Unit test pool_sends_packets exercises the round-trip
through a temp-file scheme fixture, with proper locking
via std::sync::Mutex on a static FAKE buffer.
The smolnetd main loop integration is intentionally
deferred to a follow-up patch: netstack currently uses
libredox::Fd throughout, and the worker pool needs
std::fs::File. Converting libredox::Fd to a std::fs::File
across the scheme accessors is a one-time migration; once
that lands the ReaderPool can be wired into the main event
loop and CORE-C12 is fully implemented.
Red Bear OS
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