VSOCK: VM ↔host socket with minimal configuration
summary
AF_VSOCK offers a POSIX sockets API between VM and host using a virtio device that needs only a guest CID assigned on the host while the guest requires no network setup. Demo uses qemu-kvm/libvirt, vhost/virtio transports and nc and Python examples to show connect/accept; example CID 33 and well-known CID 2 (host) and CID 1 (local) values are used. Linux 5.5 adds multi-transport support, Linux 5.6 adds loopback, netns support is experimental.
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chapters (15)
- 0:00Introduction
- 1:14VSOCK
- 2:19Address family
- 3:14Use cases
- 3:54Transports
- 4:41QKB Home
- 7:47Multiple Multi Transport
- 8:42Local Communication
- 10:22Natural namespace support
- 12:03Natural namespace demo
- 13:54Tools and languages
- 14:43Example
- 15:00Demo
- 16:39Conclusion
- 17:13Questions
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