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Userspace networking: beyond the kernel bypass with RDMA!

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Userspace networking: beyond the kernel bypass with RDMA!
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Using the RDMA infrastructure for performance while retaining kernel integration
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490
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CC Attribution 2.0 Belgium:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Abstract
While userspace networking has demonstrated great performance benefits, it does come with greater complexity than kernel networking. In parallel, Remote Direct Memory Access (RDMA) was developed as an efficient way to move data in HPC and storage clusters with great success. Key properties of this technology are also highly desirable for userspace networking: native integration with the operating system (OS), OS bypass and a very efficient software interface. RDMA-capable network adapters are now enabling standard Ethernet networking functions through the RDMA interface, allowing userspace networking software such as VPP to achieve extreme performance while integrating transparently with the OS. We'll present: the RDMA Ethernet concepts, architecture and interfaces how VPP leverages it the problems solved by this architecture and the usecase it enables