8. Socket based lan

This was the only way to connect virtual guests at the start of the cloonix software.

At the quemu level, for the guest, the driver seen for the inside guest kernel is the virtio-net driver on the frontend. The backend inside quemu is a patched code cloonix specific that bring the packets from the virtio into a cloonix unix socket.

As you can see on the picture, the iperf3 throughput with this socket type is more than 4 Gigabits per second. Here is the logical path for a packet:

+-------------+
|    iperf3 TX|
+-------------+
| Guest Kernel|
+-------------+
|   virtio net|
|    qemu     |
| cloonix sock|
+---+---------+
    |
    | unix socket in user world
    v
+---+---------+
| cloonix lan |
+---+---------+
    |
    | unix socket in user world
    v
+---+---------+
| cloonix sock|
|      qemu   |
|   virtio net|
+-------------+
| Guest Kernel|
+-------------+
|    iperf3 RX|
+-------------+