NVIDIA ConnectX-8 SuperNIC Firmware Release Notes v40.46.1006

Customer Affecting Changes

This section provides a list of changes that took place in the current version and break compatibility/interface, discontinue support for features and/or OS versions, etc.

Introduced in Version

Description

40.46.1006

Renamed firmware-generated PLDM images to include the firmware name and PSID.

This section provides a list of changes that will take place in a future version of the product and will break compatibility/interface, discontinue support for features and/or OS versions, etc.

Planned for Version

Description

October 2025 (40.47.1xxx)

Starting with the October 2025 firmware release, and for all subsequent versions, compatibility with the older MFT releases (4.31.0-149 and 4.30.0-139) is no longer supported.

This section provides a list of changes that took place throughout the past two major releases that broke compatibility/interface, discontinued support for features and/or OS versions, etc.

For an archive of all changes, please refer to the Release Notes History section.

Introduced in Version

Description

40.45.1020

Downgrading the ConnectX-8 SuperNIC firmware to a version earlier than the April release (40.45.1020) is not supported

The default CNP moderation behavior has been changed from per-flow to per-port to align with previous device generations. A dedicated mlxconfig parameter, ROCE_CC_CNP_MODERATION, is available to modify this configuration if needed.

40.44.1036

In ConnectX-8, the DIAG_COUNTER interface has been changed from the following set of commands:

  • SET_DIAGNOSTIC_PARAMS

  • QUERY_DIAGNOSTIC_PARAMS

  • QUERY_DIAGNOSTIC_COUNTERS

  • ICMD_SET_DIAGNOSTIC_PARAMS

  • ICMD_QUERY_DIAGNOSTIC_PARAMS

  • ICMD_QUERY_DIAGNOSTIC_COUNTERS

to:

  • DIAG_DATA_OWNERSHIP

  • DIAG_DATA_PARAMS_CONTEXT

  • DIAG_DATA_ID_LIST

  • DIAG_DATA_QUERY

The old interface will now return zero values when queried.

List of features which are supported in previous generations of hardware devices.

  • Ethernet:

    • T10 Data Integrity Field (DIF)

    • CRC

    • Transport Layer Security (TLS) handshake

    • NVMe over TCP acceleration

  • InfiniBand:

    • FDR and lower speeds

Note

For inquiries regarding mitigation, please contact NVIDIA Support.

© Copyright 2025, NVIDIA. Last updated on Aug 25, 2025.