> ----------
From: Thomas F. Divine[SMTP:xxxxx@pcausa.com]
Reply To: NT Developers Interest List
Sent: Tuesday, May 22, 2001 6:15 PM
To: NT Developers Interest List
Subject: [ntdev] Re: NDIS Intermediate Driver Question(IMSAMP,
PASSTHRU)
>
> 1. When using the protocol reserved area of NDIS_PACKET, there seems to
be
> confusion as to the sizes these can be. 16 bytes or more than 16 bytes
that
> is the question?. Can somebody clarify the size that this “variable
field
> can be” on both NT4 and W2K for both sends and receives?
>
>
The Windows 2000 DDK documentation has been systematically revised to show
the correct value: “at least 16 bytes”. This applies to Windows NT as
well.
Whistler docs available at http://www.osr.com eventually cleared confusion
and states:
ProtocolReservedLength
Specifies the number of bytes to be allocated for the
ProtocolReserved array of each packet descriptor. For packet descriptors to
be used in receive indications, this parameter is 4*sizeof(PVOID).
This is consistent with “at least 16 bytes” which is IMHO true for all NT
versions. To be consistent with all docs you can use exactly 16 bytes 
As
stated above, it is only for receive indications which makes sense, I see no
reason there should be any such restriction for packets sent from protocol
drivers.
Best regards,
Michal Vodicka
Veridicom
(RKK - Skytale)
[WWW: http://www.veridicom.com , http://www.skytale.com]
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