test(socket): add validation fixes for blocking recvfrom #117
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Address issues identified by technical implementation validation: Important fixes: - Add test_spurious_wakeup_handling() - verifies correct behavior when multiple threads wait on same socket and one consumes the packet - Add test_interrupt_safety_documentation() - executable documentation for syscall/softirq deadlock prevention pattern - Add comprehensive sys_recvfrom documentation covering race condition handling, interrupt safety, packet delivery paths, and spurious wakeups Minor fixes: - Add concurrent_recv_stress.rs userspace test - forks 4 children that all block on recvfrom concurrently to stress test wake mechanism - Document loopback vs NIC packet delivery path differences Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Address issues identified by technical implementation validation for blocking recvfrom().
Important Fixes
test_spurious_wakeup_handling) - Verifies correct behavior when multiple threads wait on same socket and one consumes the packettest_interrupt_safety_documentation) - Executable documentation for syscall/softirq deadlock prevention patternMinor Fixes
concurrent_recv_stress.rs) - Forks 4 children that all block on recvfrom concurrently to stress test wake mechanismTest plan
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