MPIO_PASS_THROUGH_PATH_EX structure (ntddscsi.h)
The MPIO_PASS_THROUGH_PATH_EX structure is used together with an IOCTL_MPIO_PASS_THROUGH_PATH_EX request to instruct the port driver to send an embedded SCSI command to the target device.
Syntax
typedef struct _MPIO_PASS_THROUGH_PATH_EX {
ULONG PassThroughOffset;
ULONG Version;
USHORT Length;
UCHAR Flags;
UCHAR PortNumber;
ULONGLONG MpioPathId;
} MPIO_PASS_THROUGH_PATH_EX, *PMPIO_PASS_THROUGH_PATH_EX;
Members
PassThroughOffset
The offset from the beginning of this structure to a SCSI_PASS_THROUGH_EX structure that is configured in the same manner as it is for an IOCTL_SCSI_PASS_THROUGH_EX request.
Version
Set to zero.
Length
The size of the MPIO_PASS_THROUGH_PATH_EX structure, in bytes.
Flags
Can be a mask of the following values:
- MPIO_IOCTL_FLAG_USE_SCSIADDRESS OR MPIO_IOCTL_FLAG_USE_PATHID
- MPIO_IOCTL_FLAG_INVOLVE_DSM
PortNumber
The port number if MPIO_IOCTL_FLAG_USE_SCSIADDRESS is set. Otherwise, this member is zero. If MPIO_IOCTL_FLAG_USE_SCSIADDRESS is set, the PathID and TargetId values are taken from address structure associated with the embedded SCSI_PASS_THROUGH_EX structure.
MpioPathId
The PathID for the real LUN. This value can be obtained by using a WMI request for the PDO_INFORMATION that is associated with the real LUN. This value is set only if MPIO_IOCTL_FLAG_USE_PATHID is set.
Remarks
Note
All 32-bit processes running on a 64-bit version of Windows must use the MPIO_PASS_THROUGH_PATH32_EX structure when issuing an IOCTL_MPIO_PASS_THROUGH_PATH_EX request.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 8. |
| Header | ntddscsi.h (include Ntddscsi.h) |
See also
IOCTL_MPIO_PASS_THROUGH_PATH_DIRECT_EX
IOCTL_MPIO_PASS_THROUGH_PATH_EX