[ofa-general] OFA newbie question: module load/unload

[Kanoj Sarcar]

--- Sean Hefty <sean.hefty at intel.com> wrote:

> >What about bumping the module reference count when
> a
> >kernel client (eg ipoib) is using a device? How is
> the
> >driver made unloadable in such cases?
> 
> The driver is still unloadable in such cases.  The
> kernel client is notified
> when a device is removed and is expected to release
> any resources associated
> with that device.
> 
> - Sean
> 

Okay.

So, the driver is responsible for waking up any verb
handler threads that issued commands to the card but
have not yet received responses.

As an example, using mthca, I assume then something
like mthca_CLOSE_IB() is causing the card to respond
back to all pending verb requests so that
mthca_cmd_event() can flag those as cancelled, and all
threads can exit the to-be-unloaded code. Or maybe
some other piece of code is handling this?

Thanks.

Kanoj 


 
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