Support for RSS hash key update

Question

Hi,

I am using a PowerEdge R660xs with Broadcom BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller. All documentations of the adapter, as well as corresponding kernel module bnxt_en suggest that change of RSS hash keys should be possible.

We are trying to get a symmetric RSS hash key set for the interfaces with 15 RX channels using:

ethtool -X ens1f0np0 hkey 6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A:6D:5A equal 15

However, it always reports with - Cannot set RX flow hash configuration: Operation not supported

I have tried a couple of older kernel versions in vain as well, but not sure if the fault is in the kernel module or the card itself.

DELL-Erman O · Answer

Hi, the error message 'Cannot set RX flow hash configuration: Operation not supported' typically indicates that the operation you’re trying to perform is not supported by the network driver or the network card itself. When an attempt is made to gather details about the ‘rx-flow-hash’ feature using the ‘ethtool’ command: Cannot get RX network flow hashing options: Operation not supported This indicates that the rx-flow-hash feature is currently not supported by the card.

adhirathkabra · Answer

Thank you for your reply. Has this been encountered before? As I mentioned, the driver documentation says that RSS hash key update should be possible. Can imagine the problem is with one of the two yes, but some workaround suggestions would be appreciated, especially if there is similar previous experience with Broadcom cards.

Adhirath

DELL-Erman O · Answer

I've not been encountered myself yet. But I would check is there firmware update. Because some specific features can depend on FW verison, driver version and hardware revision. I've researched a workaround however I didn't see anything. Let's see how our community help.

PowerEdge Hardware General

Support for RSS hash key update

Was this post helpful?