Explore a new approach to enable RDMA in virtio-based environments through a conference talk that extends virtio-net device support for RoCE (RDMA over Converged Ethernet). Delve into the importance of Remote Direct Memory Access (RDMA) in modern data centers, current virtualization solutions, and their limitations. Learn about the design details of this innovative approach, including new virtqueue types, device initialization, control path operations, and data path processes. Compare this method with existing solutions, discuss open questions, and gain insights into future plans for implementing RDMA capabilities in virtualized environments.
Bring RoCE - RDMA over Converged Ethernet Capability to Virtio-net Device
Overview
Syllabus
Intro
RDMA Introducation
RDMA in Virtualized Environments
Enable RDMA on virtio-net device
Comparision
Architecture Overview
New Virtqueue Types
Device Initialization
Control Path - Create PD (Protection Domain)
Control Path - Register MR (Memory Region)
Control Path - Create CQ (Completion Queue)
Control Path - Create QP (Send Queue & Receive Queue)
Control Path - Modify QP (RC/UC Type)
Data Path - Post Send
Data Path - Fetch Buffer
Status & Future Work
Taught by
Linux Foundation
