Microsoft drive a RDMA support with SMB Direct - file based service, not block...:(
I can't remember what VPI WinOF version contain firmware 2.10.720.
You can get it archive driver link...:
If you are Ethernet user then you must build your custom firmware that can support your CX-2 adapter, too!
I remember that WinOF has a raw format firmware file.
You can extracted configuration file to cx2the.ini with WinMFT tools from your adapter then you can build your firmware with *.ini + raw firmware file.
Finally you get a cx2eth.bin then you can update firmware eith mlxburn...:)
Good luck!