Similar to bypass mode, the internal mode also provides a mechanism to pass
information directly from the software to the user logic. In addition to address and
length, the H2C Stream descriptor also has a 32b metadata field. This field is not used
by the QDMA Subsystem for PCIe for the DMA operation. Instead,
it is passed on to the user logic on the H2C AXI4-Stream tuser
on every beat of the packet. Passing metadata on the tuser
is not supported for a queue in bypass mode and
consequently there is no input to provide the metadata on the QDMA H2C Stream bypass-in
interface.