FreeBSD The Power to Serve

ENA FreeBSD Driver Update

Links:
ENA README URL: https://github.com/amzn/amzn-drivers/blob/master/kernel/fbsd/ena/README.rst

Contact: Michal Krawczyk <mk@semihalf.com>
Contact: Dawid Gorecki <dgr@semihalf.com>
Contact: Marcin Wojtas <mw@FreeBSD.org>

ENA (Elastic Network Adapter) is the smart NIC available in the virtualized environment of Amazon Web Services (AWS). The ENA driver supports multiple transmit and receive queues and can handle up to 100 Gb/s of network traffic, depending on the instance type on which it is used.

Completed since the last update:

  • Upstream of the ENA driver v2.5.0, which included:

  • Improvement to the reset routine handling,

  • Extension of the timer service lifetime in order to be able to detect more hardware failures,

  • Fix logic for verifying the Tx request ID,

  • Fix IPv6 L4 checksum offload handling for the Tx,

  • Add NUMA awareness to the driver.

  • Internal review of the upcoming ENA driver release (v2.6.0), including:

  • Further reset handling improvements,

  • Code cleanup and style fixes,

  • Logging improvements,

  • Fix to the retrieval of the ENI metrics.

Work in progress:

  • Testing of the upcoming ENA driver release (v2.6.0).

Sponsor: Amazon.com Inc

Last modified on: August 2, 2022 by Lorenzo Salvadore