about irp->UserBuffer in Ndis Intermediate Driver

NTDEV
1

When I send a io-request to Ndis Intermediate driver on Windos 2000, How
can I make the irp->UserBuffer not NULL?

And now I can processing the io-request and get inBuffer content, but I can
not get anything from irp->AssociateIrp.SystemBuffer.

How do you think about it?

Thank you.

Best regards.
Zhao.

2

The buffering method you select (BufferedIo, DirectIo, or NeitherIo) will
determine which buffer fields in the IRP to use
(Irp->AssociatedIrp.SystemBuffer, Irp->MdlAddress, Irp->UserBuffer
respectively).

HTH UKO.