This section includes history of changes and new feature of 3 major releases back. For older releases history, please refer to the relevant firmware versions.
| Feature/Change | Description |
| 28.39.2048 | |
| FEC Configuration | Changed the default FEC configuration for the “Protocol Aware” and “Active DME Modules” (ETH cables). For the list of cable identifiers, see tables below. |
| Bug Fixes | See Bug Fixes in this Firmware Version section. |
| Byte 192 of Page 0 for sff cables | Name | Auto Detect FEC | Current Default FEC | Previous Default FEC | P/N - Example of one module |
| 0x1A | 100GBase DWDM2 | No | NO FEC | RS FEC | |
| 0x21 | 100G BIDI PAM4 | No | NO FEC | RS FEC | SFBR-89BDDZ-CS4 |
| 0x25 | 100GBASE-DR | No | NO FEC | RS FEC | MMS1V70-CM |
| 0x26 | 100GBASE-FR | No | NO FEC | RS FEC | QSFP28-FR-C |
| 0x27 | 100GBASE-LR | No | NO FEC | RS FEC | SPTSBP4LLCDF |
Protocol Aware ETH Cables
| Byte 192 of Page 0 for sff cables | Name | Auto Detect FEC | Current Default FEC | Previous Default FEC | P/N - Example of one module |
| 0x1 | 100G AOC / 25GAUI C2M AOC | Yes | RS FEC | RS FEC | |
| 0x2 | 100GBASE-SR4 / 25GBASE-SR | Yes | RS FEC | RS FEC | MMA2P00-AS |
| 0x3 | 100GBASE-LR4 | Yes | NO FEC | RS FEC | MMA1L10-CR |
| 0x3 | 25GBASE-LR | Yes | RS FEC | FC FEC | MMA2L20-AR |
| 0x4 | 100GBASE-ER4 | Yes | NO FEC | RS FEC | SPQCEERCDFLM Source Photonics |
| 0x5 | 100GBASE-SR10 | Yes | NO FEC | RS FEC | |
| 0x6 | 100G CWDM4 MSA with FEC | Yes | RS FEC | RS FEC | MMA1L30-CM |
| 0x7 | 100G PSM4 Parallel SMF | Yes | RS FEC | RS FEC | MMS1C10-CM |
| 0x8 | 100G ACC / 25GAUI C2M ACC | Yes | RS FEC | RS FEC | |
| 0x9 | 100G CWDM4 MSA without FEC | Yes | NO FEC | RS FEC | LQ210CR-CPA2 |
| 0x17 | 100G CLR4 | Yes | RS FEC | RS FEC | |
| 0x18 | 100G AOC | Yes | NO FEC | RS FEC | MFA1A00-C010 |
| 0x19 | 100G ACC | Yes | NO FEC | RS FEC | |
| 0x20 | 100G SWDM4 | Yes | RS FEC | RS FEC | FTLC9152RGPL |
| 0x22 / 0x23 / 0x24 | 4WDM-10 MSA / 4WDM-20 MSA / 4WDM-40 MSA | Yes | RS FEC | RS FEC |
Active DME Modules ETH Cables
To configure FEC or Speed that is different than the default, you must configure both sides.
The following are examples of when FEC detection capability is available:
when a 25G SFP module is connected to card, it will support FEC detection in 25G
when a 100G QSFP module is connected to a card, it will support FEC detection in 100G, but not in 50G or 25G
Firmware version 28.38.1900 (together with MLNX_OFED v23.07-0.5.1.2) should be used by InfiniBand customers.
| Feature/Change | Description |
| 28.38.1900 | |
| QKEY Mitigation in the Kernel | QKEY creation with the MSB set is available now for non-privileged users as well. To allow non-privileged users to create QKEY with MSB set, the below new module parameter was added to ib_uverbs module:
Note: In this release, this module parameter is disabled by default to ensure backward compatibility and give customers the opportunity to update their applications accordingly. In the upcoming release, it will be enabled by default, and later on deprecated. |
| Feature/Change | Description |
| 28.38.1002 | |
| Header Modification | Added support to the metadata reg_c 8-11 (packet fields) for matching and modifying the header, and Advanced Steering Operation (ASO) actions. |
| INT Packets | Added support for forwarding INT packets to the user application for monitoring purposes by matching the BTH acknowledge request bit (bth_a). |
| Get Electrical Sensor, NC-SI | Implemented NVIDIA NC-SI OEM Commands:
|
| IPsec CPS Bulk Allocation | Improved the IPsec CPS by using bulk allocation. For cases in which log_obj_range == 0, single IPSEC object will be allocated and initialized as before keeping backward compatibility. For better performance, it is recommended to work with IPsec bulk allocation and to initialize IPsec ASO context not via the firmware but via the hardware using ASO WQE. |
| DPA PROCESS ERROR | Added support for a new value for coredump_type field in DPA_PROCESS_COREDUMP, [FIRST_ERROR_THREAD_DUMP (1).]. |
| Device Attestation | Attestation is a mechanism in which a host/platform automatically verifies the authenticity and integrity of the hardware and software state of a device. The mechanism is based on a HW RoT and utilizes SPDM messages that handle the attestation, measurement collection, and trust between device and platform BMC or platform RoT (usually host BMC). This provides the added value of increased security and assurance that the host/platform of device is not being tampered with and has the proper software running on it. A CoRIM is comprised of one or more CoMIDs , with each CoMID providing the reference claims about hardware and firmware for a device. The CoRIM and CoMIDs are encoded in CBOR format. Signed CoRIMs use COSE signatures. For further information, see “NVIDIA Device Attestation and CoRIM-based Reference Measurement Sharing”. |
| QKEY Mitigation in the Kernel | Non-privileged users are now blocked by default from setting controlled/privileged QKEYs (QKEY with MSB set). |
| Bug Fixes | See Bug Fixes in this Firmware Version section. |
| Feature/Change | Description |
| 28.37.1014 | |
| Mergeable Buffer | Added mergeable buffer support (VIRTIO_NET_F_MRG_RXBUF in virtio spec) for VDPA kernel mode to improve performance in case of large MTU such as 9K. The feature is disabled by default and must be manually enabled while creating or modifying the virtio device. Note: For best performance, it is NOT recommended to enable the feature if the VDPA MTU is set to the default value (1500). |
| Monitoring Cloud Guest RoCE Statistics on Cloud Provider | This new capability enables the VM to track and limit its Vport’s activity. This is done using the new q_counters counter which enables aggregation of other Vport’s from PF GVMI. |
| Linux Bridge Offload | Added a flow rule that enables offloading of multicast traffic by broadcasting it to multi-Flow-Table in FDB. |
| Selective Repeat | Selective repeat improves network utilization in case of a lossy fabric. This features is enabled by default. |
| Dynamic VF MSIX Allocation | Added support for dynamic MSIX modification on a VF NVME device emulation. If a PF NVME device emulation is created with dynamic_vf_msix_control = 1, then the dynamic_vf_msix_reset can set the PF device emulation’s VF MSIX number to 0. The num_msix is used in the modified VF device emulation to modify the MSIX number of the VF device emulation. |
| InfiniBand Congestion Control (IB CC) | Enabled IB CC per Service Level (SL) for RC/UC on the HCA side. Now different SLs can be configured to be CC on/off according to the bitmask decided by the software. |
| ATS/ATC | Optimizes the ATC configuration dynamically based on the returned pages of the ATS translation requests that have been made. |
| PCC Algorithms | Enables a smooth and statically switch between PCC algorithms. In addition, the user can now switch between PCC algorithms while running traffic. |
| Hardware Steering: Bulk Allocation | Added support for 32 actions in the header modify pattern using bulk allocation. |
| InfiniBand Congestion Control - RTT Response Service Level | The software can explicitly set the SL of an RTT response packet, instead of it being taken from the RTT request packet’s SL. The RTT response packet SL may be set/queried via the CONGESTION_CONTROL_HCA_NP_PARAMETER MAD. |
| Bug Fixes | See Bug Fixes in this Firmware Version section. |