PCIe or mpt3sas loopback device to test PCIe side streaming?

PCIe or mpt3sas loopback device to test PCIe side streaming?

[Jeff Johnson]

Greetings,

I'm looking for a method to test streaming write and read speeds to
and from the Broadcom (LSI) PCIe SAS controller without the use of any
physical block devices connected to the HBA. I want to test the
streaming performance of the PCIe side of the controller.

Does anyone know of any loopback within mpt3sas or similar function
that can be used with dd or fio to profile PCIe side streaming
performance?

Example:
dd if=/dev/zero of=/dev/somemptloopback bs=65536
dd of=/dev/null if=/dev/somemptloopback bs=65536

Many thanks,

--Jeff