// usbioctl.h

typedef struct _USB_NODE_CONNECTION_NAME {
  ULONG ConnectionIndex;
  ULONG ActualLength;
  WCHAR NodeName[1];
} USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME;
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Windows Driver Kit DDI reference (ns-usbioctl-_usb_node_connection_name)

_USB_NODE_CONNECTION_NAME structure

Description

The USB_NODE_CONNECTION_NAME structure is used with the IOCTL_USB_GET_NODE_CONNECTION_NAME I/O control request to retrieve the symbolic link of the downstream hub that is attached to the port.

Members

`ConnectionIndex`

A value that is greater than or equal to 1 that specifies the number of the port to which the hub is attached.

`ActualLength`

The length, in bytes, of the attached hub's symbolic link.

`NodeName`

A Unicode symbolic link for the downstream hub that is attached to the port that is indicated by ConnectionIndex. If there is no attached device, the attached device does not have a symbolic link, or if the device is not a hub, NodeName[0] will contain a value of UNICODE_NULL.

USB_NODE_CONNECTION_NAME - NtDoc