SSD Direct Streaming via Stream Identity for Secure FPGA Data Transfer

The patent introduces a stream identity as an intermediary that mediates data transfer between the storage device and secondary device. Instead of exposing complex data layout details and filesystem structures, the stream identity serves as a simplified reference that the secondary device uses to request data. The storage device controller translates this simple reference into the actual complex data retrieval operations, thereby maintaining high data transfer capability while hiding system complexity and security vulnerabilities.

The patent implements a self-service mechanism where the storage device autonomously manages the data streaming process. The storage device controller directly handles data retrieval, buffering, and transfer to the secondary device without requiring host CPU intervention for each data transfer operation. The host CPU only needs to initiate the stream by providing a stream identity, after which the storage device independently completes the entire data transfer process, thereby maintaining data security through controlled access while maximizing data processing efficiency by eliminating CPU bottlenecks.

The stream identity acts as a security intermediary that decouples the secondary device from direct access to data layout information. The secondary device submits requests using only the stream identity without needing to know or access underlying data structures, filesystems, or memory layouts. The storage device controller serves as the mediator that translates these secure, simplified requests into internal operations, thereby enabling direct streaming that reduces host CPU usage while simultaneously protecting data layout security by preventing unauthorized exposure of sensitive structural information.