Module rx

VirtIO RX logic.

Poll-based receive - never block!

Reference

NETWORK_IMPL_GUIDE.md §4.7

Functions

• prefill_queue
  Pre-fill RX queue during initialization.
• receive
  Receive a packet via VirtIO.
• refill_queue
  Refill RX queue with available buffers.
• resubmit_buffer 🔒
  Resubmit RX buffer after processing.