PortDeviceObject & StackDeviceObject in 1394

NTDEV
1

Correct me if I am wrong. In 1394diag.sys, There is two types of
DeviceObject needed to be save at the DeviceExtension.
StackDeviceObject = which is PDO(Physical Device Object) and
Port DeviceObject = which is the PortDeviceObject pointed by the
DeviceExtension in Physical Device Object).
What I want to know is, when is this PortDeviceObject(or this
DeviceExtension from type NODE_DEVICE_EXTENSION) being created or
populated???

Thanks,
Ie Piu

2

> What I want to know is, when is this PortDeviceObject(or this

DeviceExtension from type NODE_DEVICE_EXTENSION) being created

This is the device object of the 1394 host controller card. It is a FDO
hanging off the PCI’s PDO.

Max