Mellanox Connectx-6Dx - support for Symmetric RSS Hash & Inner IP

Test-setup:

  • Windows : Server 2019 x64
  • NIC : Mellanox Connectx-6Dx
  • Mlx WINOF2 : 2.80.25134.0
  • DPDK versions under Eval : 21.11, 22.03_rc2

Does the adapter have support for Symmetric RSS Hash & Inner IP (IP inside tunnels like GTP, GRE etc) based RSS distribution on dpdk?
If yes, please guide us which options we should use to configure adapter & dpdk.

Hello Burto,

Thank you for posting your inquiry on the NVIDIA Developer Forum - Infrastructure and Networking - Section.

We provided this info already in another thread, but we will repeat it again. Windows DPDK Support is very limited. See the link regarding the limitations.

The following link provides the information regarding the limitations for Windows DPDK when using the ConnectX-6 Dx → https://doc.dpdk.org/guides/nics/mlx5.html#limitations

The following link provides the information on how-to build the Windows PMD → https://doc.dpdk.org/guides/platform/mlx5.html#windows-prerequisites

Hope this will get you further.

Thank you and regards,
~NVIDIA Networking Technical Support

1 Like

Hi MvB,

In the link, RSS is mentioned as supported. But there is no explicit information for RSS Hash on Inner IP (IP inside tunnels like GTP, GRE etc).

The flag (ETH_RSS_LEVEL_INNERMOST) for inner IP is not working. How to enable RSS Hash on Inner IP?

Thanks,
Burto