NDIS 5.0 in Vista ?

NDIS 5 IM filter and MUX drivers -are- supported under Vista. Maybe you
meant to say NDIS -6- IM filter drivers are not supported which is true
(NDIS 6 filter drivers should use NDIS 6 lightweight filter driver model).

This said you should expect support for NDIS 5 IM filter drivers to be one
of the first to be dropped in the -yet to be determined- future version of
NDIS due to extreme complexities of supporting NDIS 5 IM filter drivers in
Vista in general and supporting a stack that consists of both NDIS 5 IM
filter drivers and NDIS 6 lightweight filter drivers in particular (still
having nightmares...).

You are correct that running NDIS 5 miniport drivers under Vista will incur
a performance penalty because TCPIP in Vista is NDIS 6 and NDIS would have
to translate every and each NDIS_PACKET to NET_BUFFER (and vice versa) on
xmit and receive path.

-ali
--
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<soviet_bloke@hotmail.com> wrote in message
news:1166755108.860632.46920@48g2000cwx.googlegrou ps.com...

>> We have been using an NDIS miniport driver writing using NDIS 5.0. Will
>> this
>> work under Windows Vista?

>
> Sure it will....
>
> The only thing that is not supported under Vista is NDIS IM filters -
> NDIS5 IM MUX, miniport
> ans protocol drivers are going to work, although at some performance
> penalty, compared to their NDIS 6 counterparts (more on this below)...
>

>> If I port the code to NDIS 6.0, will the driver still work under older
>> Windows platforms like Windows 2000 and XP?

>
> Of course not - NDIS 6 is very different from earlier NDIS versions,
> particularly when it comes to parameters that you pass to to NDIS
> functions. This is why translation of NDIS5 calls to NDIS 6 may have
> some negative impact on performance when you run NDIS5 driver under
> Vista
>
> Anton Bassov
>
> Polaris wrote:

>> Hi Experts:
>>
>> I have a question on NDIS version usable under Windows Vista:
>>
>> We have been using an NDIS miniport driver writing using NDIS 5.0. Will
>> this
>> work under Windows Vista? If not, what should I do to make it work in
>> Vista
>> with minimum change? For example, should I port the driver code to NDIS
>> 5.1
>> (which is supported by Vista as I read from the web)?
>>
>> If I port the code to NDIS 6.0, will the driver still work under older
>> Windows platforms like Windows 2000 and XP?
>>
>> Thanks for your advises !
>> Polaris

>