[ConnectX-5 and above] Added support for allowing OVS kernel to support up to 128 matches (groups) per table and 16M entries per group. 

[ConnectX-5 and above] Added support to offload ct_state flags rpl, inv, and rel.

• For rpl, support was added for both set and not set matching offload (i.e., +rpl and -rpl).

• For inv and rel, support was added only for the not set option (i.e., -rel and -inv). 

[ConnectX-5 and above]  Added support for scalable functions (also called subfunctions). The feature enables the user to create, configure, and deploy a scalable functions (e.g., RDMA and networking applications) and to assign them to a container when a container is started via mlxdevm tool.

A scalable function can also be deployed in an untrusted guest/host system from the NIC/DPU. This enables full configuration of the function and its representors from the NIC/DPU before giving the function for a container to run in a host system.

For more information, see https://github.com/Mellanox/scalablefunctions/wiki/MLNX_OFED-step-by-step-guide. 

[ConnectX-5 and above] Added support for scalable function QoS and QoS group via mlxdevm's rate commands. Run "man mlxdevm port" for details. 

[ConnectX-4] Updated mlx5 driver to use auxiliary bus in order to integrate different driver components into driver core and optimize module load/unload sequences. 

[General] Moved all Python scripts and some other common scripts out of the mlnx-ofa_kernel packages. This removed the python dependency from that package when rebuilding it and avoided unnecessary errors when rebuilding them for custom kernels. 

• VLAN mismatch: existing generic trap DEVLINK_TRAP_GENERIC_ID_DMAC_MISMATCH
  Traps received packets with wrong VLAN tag
• DMAC mismatch: new generic trap DEVLINK_TRAP_GENERIC_ID_DMAC_MISMATCH
  Traps received packets with wrong destination MAC

Support added in user-space (N/A or package name + version): Devlink infrastructure (man7.org/linux/man-pages/man8/devlink-trap.8.html)

Devlink provides an infrastructure called devlink trap which allow a device to register/unregister and to enable/disable traps. Devlink traps also provide traps grouping and policing. The trapped packets are monitored and then forward to the drop monitor. Drop monitor is used to send notifications to user space about dropped packets.Note: For this release, NIC WJH will not implement the policy. 

[General] Added ethtool extended link state to mlx5e. 
ethtool can be used to get more information to help troubleshoot the state.
For example, if there is no link due to missing cable, run the following: 
$ ethtool eth1
...
Link detected: no (No cable)

Besides the general extended state, drivers can pass additional information about the link state using the sub-state field.
Example:
$ ethtool eth1
...
Link detected: no (Autoneg, No partner detected)

The extended state is available only for some cases of no link. In other cases, ethtool will print only "Link detected: no" as it did before. 

[ConnectX-5 and above] Added support for "Signature API" which, on supported devices, allows application-level data-integrity checks via a signature handover mechanism. Various signature types, including CRC32 and T10-DIF, can be automatically calculated and checked, stripped, or appended during the transfer at full wire speed. 

[General] Added support for ibv_query_qp_data_in_order() API. This API enables an application to check if the given QP data is guaranteed to be in order, enabling poll for data instead of poll for completion. 

[ConnectX-4] Added support for enabling Relaxed Ordering for Kernel ULPs. Using relaxed ordering can improve performance in some setups. Since kernel ULPs are expected to support RO, it is enabled for them by default so they can benefit from it. 

[ConnectX-6 Dx] Added support for mapping a QP to AH over DEVX API, which enables DC/UD QPs to use multiple CC algorithms in the same data center. 

[ConnectX-5 and above] Added DR support for matching on RAW tunnel headers using the misc5 parameters, This feature allows matching on each bit of the header, inducing reserved fields. 

[ConnectX-6 Dx] Added support for better insertion rate in software steering. This includes multi-QP which skips areas in the code that may be for debug only. 

[ConnectX-6 Dx] Improved rate of updating steering rules, insertion, and deletion. The feature includes definers, multi-qp approach, and better memory usage. 

[ConnectX-5 and above] Added support for ability to allow or prevent insertion of duplicate rules, so the user can choose one of the following behaviors:
1. Prevent duplicate rules, so that already-existing rule and fail can be detected.
2. Allow duplicate rules, to enable updating the rule's action (this will only take effect once the previous rule is deleted).

By default, duplicate rules are allowed. 

[ConnectX-6 Dx] Made it so that all rule's insertion occur in a defined time using defined (export) size of Htble and decreased use of dynamic allocation.