Changes and New Features
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SR-IOV - Virtual Functions (VF) per Port - The maximum Virtual Functions (VF) per port is 127. For further information, see RoCE Limitations.
It is recommended to enable the “above 4G decoding” BIOS setting for features that require large amount of PCIe resources.
Such features are: SR-IOV with numerous VFs, PCIe Emulated Switch, and Large BAR Requests.
Security Hardening Enhancements: This release contains important reliability improvements and security hardening enhancements. NVIDIA recommends upgrading your devices' firmware to this release to improve the devices’ firmware security and reliability.
HPCC, Programmable Congestion Control
HPCC related configurations in is now supported via the mlxconfig utility.
Added support for copy modify header steering action to/from the UDP field.
Range based Lookup
Added support for range based lookup. This new capability is available using the following new PRM command:
GENERATE WQE which receives GTA WQE, the command supports "match on range" and num_hash_definer=[1,2] and num_match_ste=[1,2].
For further information, refer to section "RTC Object Format" in the PRM.
RoCE based VM Migration
Added support for RoCE based VM migration.
Added the following resource dump segments:
Striding WQE - Headroom and Tail-room
As the software requires additional space before and after a packet is scattered for its processing for stridden RQ, the hardware will allocate the required room while scattering packets to spare a copy.
Connections per Second (CPS)
Improved security offload's Connections per Second (CPS) rate using the general object DEK (PSP TLS etc).
VF Migration Flow
Added support for pre-copy commands in VF migration flow in order to reduce the migration downtime.
VF Migration Flow
Optimized performance to support full VF migration flow.
VirtIO vDPA Performance Virtualization
Increased the VirtIO hardware offload message rate to 20/20 MPPS for 256 virtual devices by optimizing the datapath application code.
RoCE: Adaptive Timer
Enabled ADP timer to allow the user to configure RC or DC qp_timeout values lower than 16.
QoS Priority Trust Default State
QoS priority trust default state can now be changed using the new nvconfig below:
The values that can be used to set the default state are:
See Bug Fixes in this Firmware Version section.
The following advanced feature are unsupported in the current firmware version:
The following service types:
INT-A not supported for EQs only MSI-X
PCI VPD write flow (RO flow supported)
Streaming Receive Queue (STRQ) and collapsed CQ
Subnet Manager (SM) on VFs
RoCE LAG in Multi-Host/Socket-Direct
CREATE_RQ - MEMORY_RQ_RMP