Re: Driver design interogation... by wp78
wp78
Mon Jun 19 12:05:02 CDT 2006
Thanks Mark, I found an other article on CodeProject, but yours is much
better, I already search on OSR, but I cannot be able to found it...
Thanks a lot,
Arnaud
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o(^_^)o
<>o<>
"Mark Roddy" wrote:
> On Sun, 18 Jun 2006 06:24:01 -0700, wp78
> <wp78@discussions.microsoft.com> wrote:
>
> >Hi,
> >
> >I am new on driver development so my question may be stupid for guru ^_^...
> >
> >My driver is base on passthru NDIS from DDK, I try to develop an IP filter
> >and HTTP-DNS content filter.
> >
> >I want to use SQLite to store a big list of ip and rules. I want to put this
> >code on a service.
> >
> >My design question is :
> > - Is this solution is correct ( speed, complexity,... ).
> > - How my driver can communicate with the db service.
> >
> >I see some info on WMI, but I have some interrogation on performance.
> >
> >Thanks for your help,
> >
> >A++
>
>
> The standard mechanism for driver to application (or service)
> communication is the 'inverted call model'. This uses IOCTLs (private
> IOCTLs that you design) for IRP based communication. The Application
> is responsible for pending one or more of your private IOCTLs with
> your driver. Your driver initiates a request by completing one of
> these IOCTLS, putting the parameters for the request into the data
> returned tot he application. The application then processes the
> request and returns information to the driver using a second IOCTL. If
> concurrency is a requirement then the request and response have to
> have a token shared between them so that the driver can correlate the
> response to its related request.
>
> There is an NtInsider article detailing this mechanism - go to
> www.osronline.com and look it up.
>
>
> =====================
> Mark Roddy DDK MVP
> Windows Vista/2003/XP/2000 Consulting
> Device and Filesystem Drivers
> Hollis Technology Solutions 603-321-1032
> www.hollistech.com
>