Changes and New Feature History

Feature/Change	Description
24.38.1002
INT Packets	Added support for forwarding INT packets to the user application for monitoring purposes by matching the BTH acknowledge request bit (bth_a).
Bug Fixes	See Bug Fixes in this Firmware Version section.

Feature/Change	Description
24.37.1300
Precision Time Protocol (PTP)	Added support for Precision Time Protocol (PTP), the protocol used to synchronize clocks throughout a computer network as part of 5T Technology.
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.
NVME Device Emulation	Enables the firmware to generate a Device Change Event upon any change in the NVME Device Emulation object (BAR change, HotPlug power state change, NVME Function reset, etc).
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.
Bug Fixes	See Bug Fixes in this Firmware Version section.

Feature/Change	Description
24.35.2000
PCC Algorithm	Enables the users to collect more information from NP to RP for PCC algorithm. To achieve this, the NP ingress bytes information was added to the RTT response packet sent from the NP side.
HPCC: Support per-IP and per-QP methods	Enables the user to configure the PCC algorithm shaper coalescing mode using nvconfig to select CC algorithm shaper coalescing for IB and ROCE. The new parameters are `IB_CC_SHAPER_COALESCE` and `ROCE_CC_SHAPER_COALESCE`.
Bug Fixes	See Bug Fixes in this Firmware Version section.

Feature/Change	Description
24.35.1012
HPCC, Programmable Congestion Control	HPCC related configurations in is now supported via the mlxconfig utility.
UDP	Added support for copy modify header steering action to/from the UDP field.
Resource Dump	Added the following resource dump segments: SEG_HW_STE_FULL that includes dump to STE and all its dependencies SEG_FW_STE_FULL that include dump to FW_STE and to HW_STE_FULL in range
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).
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.
Open SNAPI: Communication Channel	Open SNAPI steering hop optimization: Only packets with dmac/dlid 0 will enter the SNAPI steering channel. Meaning if the Open SNAPI communication channel exists, all other traffic will have only 1 steering hop penalty SW must use dlid/dmac == 0 in address vector of a SNAPI QP cross eSwitch, Open SNAPI is now allowed if LAG is enabled
SHA Calculations	Added support for SHA calculations via the MMO engine.
UPT Performance	Optimized latency for UPT traffic.
NONDNIC, LAG	Added LAG support on NODNIC interfaces to enable traffic functionality on other ports after the LAG is enabled.
QoS Priority Trust Default State	QoS priority trust default state can now be changed using the new nvconfig below: QOS_TRUST_STATE_P1 QOS_TRUST_STATE_P2 The values that can be used to set the default state are: TRUST_PORT TRUST_PCP TRUST_DSCP TRUST_DSCP_PCP
VirtIO Full Emulation	Implemented a transitional device which supports both drivers conforming to the spec 1.x and allows legacy drivers to support virtio legacy driver (virtio 0.95).
Bug Fixes	See Bug Fixes in this Firmware Version section.