Other SRB_FUNCTION_XXX Requests

The following SRB Function values are defined for use in future versions of the operating system:

• SRB_FUNCTION_RECEIVE_EVENT

• SRB_FUNCTION_RELEASE_RECOVERY

• SRB_FUNCTION_RESET_DEVICE

• SRB_FUNCTION_TERMINATE_IO

The NT-based operating system SCSI port driver processes requests with the following SRB Function values without calling any SCSI miniport driver:

• SRB_FUNCTION_CLAIM_DEVICE

• SRB_FUNCTION_RELEASE_QUEUE

• SRB_FUNCTION_FLUSH_QUEUE

• SRB_FUNCTION_RELEASE_DEVICE

• SRB_FUNCTION_LOCK_QUEUE

• SRB_FUNCTION_UNLOCK_QUEUE

For details about these functions, see Storage Class Drivers.

Miniport driver designers can assume that their miniport drivers will never be sent an SRB with any of the immediately preceding Function values. The NT-based operating system port driver handles these requests from storage class and filter drivers to protect higher-level drivers from having to access any HBA-specific (or miniport driver-specific) state information to find their devices or to cancel queued requests. This ensures that NT-based operating system storage class and filter drivers have no dependencies on any particular model of HBA.

See SCSI_REQUEST_BLOCK structure for more information.