Your principal ?driver? object (the one that represents the connected
resources on your gateway) should then be a WDM device that *enumerates* the
(virtual) miniport PDO when the gateway device is good and ready to provide
services (and a MAC address).
NDIS does not allow you to ?communicate? a new MAC address to an existing
NIC (virtual or otherwise). You need to stop and start the NIC (at the very
least). From driver-land, the simplest solution is probably the child
device approach.
It is possible to build a ?layered miniport? (sort of like half an IM
driver) and start and stop the miniport edge but this may be more trouble
than it is worth if your device inherently has hardware beneath it and
enumerates in the PnP stack already.
Good Luck,
Dave Cattley
Consulting Engineer
Systems Software Development
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Deepak Gupta
Sent: Tuesday, December 16, 2008 1:11 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Notifying new MAC to NDIS
Hi Folks,
I don’t know how silly is my question (I am new to all this, so can’t think
of but asking you guys)
I have a Gateway device (some proprietary network (let’s call it X Network)
to Ethernet) on our proprietary network.
This gate way device understands Ethernet over X type of network.
On the host side also I have a stack for X type of network.
So this gate way device assigns me the MAC each time I connect to it and I
indicate this MAC to NDIS in response to it’s OID queries.
When I connect to the device in MiniportInitialize then everything is fine,
I get the MAC from target device and is inidicated to NDIS when it reqests
the OID.
But if target gateway device is not reachable (suppose is cable is removed
for a while) and my device is initializing, I don’t connect to the target
device and defer
the procedure until I get a callback from X network stack.
Since MiniportInitialize has been returned, NDIS asks me for current MAC and
I return some fake MAC to it.
But When My callback get called notifying me that target gate way device is
available now, I communicate to it and get a new MAC address from gate way
device.
Now I want to communicate this new MAC to NDIS.
Regards
Deepak
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