Supported Adapters - Supported Adapters

Supported Adapters - Supported Adapters - UG1739

AMD Solarflare X4 Series Ethernet Adapter User Guide (UG1739)

Document ID

UG1739

Release Date

2026-08-04

Revision

1.4 English

All X4 series adapters fully support SR-IOV.

For SR-IOV on X4 series adapters, you must use the Enterprise datapath.

Driver and Firmware Requirements

SR-IOV requires the following (minimum) driver and firmware versions for AMD Solarflare X4 series adapters:

Driver: Version 6.3.1.1000 or later.
Firmware bundle: Version 1.3.2.105 or later.

The adapter must be using the full-feature firmware variant (see Firmware Variants). You can confirm this with rx0 tx0 appearing after the version number in the output from ethtool -i:

# ethtool -i eth<N>
driver: sfc
version: 6.3.1.1000
firmware-version: 1.3.2.5 rx0 tx0

The previous command also confirms the driver version. However, it does not confirm the firmware bundle version. (The firmware-version that it reports is for the micro-controller firmware within the bundle.)

To confirm the firmware bundle version, you must instead use the devlink dev info command:

# devlink dev info pci/0000:01:00.0
pci/0000:01:00.0:
  ...
  versions:
    ...
    running:
      ...
      fw.bundle_id 1.3.2.105
      ...