[ofw] RE: Ibbus as a filter driver for mthca.

[Jan Bottorff]

>Completing the request without passing it down is wrong...

You guys are running under driver verifier? DV will almost certainly
assert if the QDR is not passed down the stack with an error saying you
need to pass QDR down the stack. DV is very useful during development,
not just later in testing. DV is especially good at checking PnP irps. 

Also a comment on ibbus being a filter driver, there is no documented
way to install a filter driver during text mode setup on Windows 2003.
If the goal is to allow bare metal install to a fabric boot disk, this
might be a problem. Some options around this would be to: 1) find a way
to install filters during text mode setup, 2) not to make ibbus a
filter, but to make the hca be a bus driver with only the ibbus as a
static child, a bus on a bus, which would use standard methods of text
mode setup, 3) don't support text mode setup, and only support image
cloning to create a fabric system boot disk. I'm only bringing this up
because it's a subtle architectural issue that isn't apparent until you
try to do text mode setup.

Jan
 

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