crossbow discuss - May 2009 - Ignoring return values from driver's enable and disable poll routines

All,

After looking through mac layer source, is there a reason
that the mac layer ignores return values from the driver''s
enable poll and disable poll routine.  This is potentially
a bug considering there are possible failures that occur
in enabling and disabling polling.

Regards,
Michael

On May 19, 2009, at 10:20 AM, Michael Speer wrote:
> All,
>
> After looking through mac layer source, is there a reason
> that the mac layer ignores return values from the driver''s
> enable poll and disable poll routine.  This is potentially
> a bug considering there are possible failures that occur
> in enabling and disabling polling.
I agree that if we allow the driver to fail the operation but always  
ignore that return value then we need to make this more consistent.  
However I''m concerned about the type of failures that can cause this  
to occur and the impact on the schedule of traffic for the  
corresponding device.

Can you tell more about the conditions that can cause these operations  
to fail in the case of nxge? Such an operation should not fail unless  
there''s a hardware problem, and in that case the proper notifications  
should be sent up via FMA.

Thanks,
Nicolas.
>
>
> Regards,
> Michael
>
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-- 
Nicolas Droux - Solaris Kernel Networking - Sun Microsystems, Inc.
nicolas.droux at sun.com - http://blogs.sun.com/droux