Networking

Hardware Acceleration

Mellanox Accelerated Switching And Packet Processing (ASAP2)

Mellanox ASAP2 is a technology that enables the offloading of the Open vSwitch datapath to the NIC. This offloading is done by the NIC's firmware, and is transparent to the host.

Atmosphere uses the netoffload project which takes care of validating and preparing the host for SR-IOV.

It is recommended to follow the BIOS, Kernel & NIC configuration steps documented within the netoffload project before getting started.

Open vSwitch configuration

In order to enable hardware off-loading in Open vSwitch, you must make sure that you deploy with the following configuration:

openvswitch_helm_values:
  conf:
    ovs_hw_offload:
      enabled: true

Neutron configuration

In order to enable hardware off-loading in Neutron, you can simply deploy it with the following configuration and it will use netoffload to automatically configure ASAP2.

!!! note

If you see an Init error when deploying Neutron, you may need to look at the
logs of the `netoffload` container to see what went wrong.

neutron_helm_values:
  conf:
    netoffload:
      asap2:
        - dev: enp97s0f0
          vfs: 16