OVS Orbit

OVS Hardware Offload, with Simon Horman from Netronome

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Simon Horman has been an Open vSwitch contributor and committer since
2010. He currently works for Netronome, where his Open vSwitch work
centers around hardware offload using the "tc" API
integrated into the Linux kernel. This API allows users of Open vSwitch
to transparently obtain better performance: when offload is enabled with
a compatible network card, Open vSwitch works the same way, but faster.

The conversation includes:

  • Categories of NICs with hardware offload
  • The architecture of Netronome NICs
  • How the offload API works
  • Handling state (such as connection tracking state) in hardware
    • offload
  • Limitations of hardware offload, such as memory and other resource
    • limits
  • Extending hardware offload to DPDK
  • The possibility of classification-only offload
  • Offload interaction with the OVS caching hierarchy
  • The cost of offload
  • Kernel politics of the offload API
  • Applications for offload
  • Vendor cooperation across the API

    • Simon Horman is available on Twitter as @horms.

    For more information on the offload API, you might want to listen to Episode 50, with Andy Gospodarek from Broadcom.

    OVS Orbit is produced by Ben Pfaff. The
    intro music in this episode is Drive,
    featuring cdk and DarrylJ, copyright 2013, 2016 by Alex. The bumper
    music is Yeah Ant
    featuring Wired Ant and Javolenus, copyright 2013 by Speck. The outro
    music is Space
    Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All
    content is licensed under a Creative Commons Attribution 3.0
    Unported (CC BY 3.0) license.

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    OVS OrbitBy Ben Pfaff
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