Show HN: I integrated my from-scratch TCP/IP stack into the xv6-riscv OS https://bit.ly/3ULXuPO

Show HN: I integrated my from-scratch TCP/IP stack into the xv6-riscv OS Hi HN, To truly understand how operating systems and network protocols work, I decided to combine two classic learning tools: the xv6 teaching OS and a from-scratch TCP/IP stack. I'm excited to share the result: my own from-scratch TCP/IP networking stack running directly inside the xv6-riscv ( https://bit.ly/47rF1jd ) kernel. The project uses a modern virtio-net driver, allowing it to run seamlessly in QEMU and communicate with the host machine. Key features: - From-Scratch Stack: The core is powered by microps ( https://bit.ly/41TsKQK ), a TCP/IP stack I originally wrote to run in user-space as a personal project to learn the low-level details of networking. - Kernel Integration: This project ports microps from user-space into the xv6-riscv kernel. - Socket API: Implements standard system calls (socket, bind, accept, etc.) to enable network application development. - User-level Tools: Comes with a simple ifconfig command, plus tcpecho and udpecho servers to demonstrate its capabilities. This has been a fantastic learning experience. My goal was to demystify the magic behind network-aware operating systems by building the components myself. I'd love to hear your feedback and answer any questions! https://bit.ly/47rF1jd August 26, 2025 at 07:24AM