Specifies
the reason for the interrupt. This field defines the following flags:
- ERROR
- STREAM_STOP_NOW
- SHD_READ_COMPLETE
- SHD_WRITE_COMPLETE
Note:
Do not set SHD_READ_COMPLETE or SHD_WRITE_COMPLETE if not returning
a buffer.
The STREAM_STOP_NOW flag is required. It forces the stream handler to release
all buffers that have not been returned. Issue this flag if DDCMD_STOP or
if the VSD has remaining buffers.