Open Source Summit Europe 2024

The PCI Endpoint framework enables the Linux kernel to act as a PCI Endpoint device. It allows software to describe the behavior of a PCIe function, which is a logical unit within a PCI device. This session will present the design and implementation of a virtio-net device using this framework.　Virtio is a para-virtualization framework designed to improve the efficiency of device I/O operations in virtualized environments. It enables software to emulate device behavior, leading to efficient data transfers in this case.　This session will discuss the architecture and current status of the proposed virtio-net PCI function driver based on the PCI endpoint framework. Additionally, it will introduce an API for controlling virtio virtqueues, which are used for data transfer. This API is generic and can be used to implement PCI Endpoint devices for other virtio devices.