Changes and New Feature History

Warning

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
22.37.1014
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.
PCC Algorithms	Enables a smooth and statically switch between PCC algorithms. In addition, the user can now switch between PCC algorithms while running traffic.
PCC Firmware Trace	Added support for running PCC firmware trace without saving and sending the DB strings to the tool with the following changes: Added new string section to the user PCC image creation tool Added the new PCC DB strings to MTRC access registers output On the tool's part: added support to reading the string.db using the MTRC access registers
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.

Feature/Change	Description
22.36.1010
NVconfig	Enabled provisioning of the OEM public key that is used for OEM NVconfig file signature verification.
Bug Fixes	See Bug Fixes in this Firmware Version section.

Feature/Change	Description
22.35.2000
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
22.35.1012
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.
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.
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).
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: 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
Bug Fixes	See Bug Fixes section.
22.34.4000
Bug Fixes	See Bug Fixes section.
22.34.1002
LLDP Properties Implementation on RDE	Added LLDPEnable, LLDPTransmit and LLDPReceive properties to the RDE Port schema implementation.
PPS Offset	Added a 22 nanosecond of propagation delay to the cable delay of the PPS signal when using PPS out.
Programmable CC, PPCC, MAD, IBCC	Added support for PPCC register with bulk operations, MAD for algorithm configuration and tunable parameters.
Programmable Counters	Added support for programmable counters for PCC via PPCC register and MAD.
RX Rate-limit in Multi-Host	Added support for RX multi-host rate limit using an enabler script.
Queue Counters Allocation	This new capability allows privileged users to allocate queue counters. In this new feature the get_max_qp_cnt_cur_cap() returns a valid value when the UID is with UCTX_CAP_INTERNAL_DEVICE_RESOURCES, otherwise it returns 0.
Bug Fixes	See Bug Fixes section.