[ofw] Doing queries on subnet every 30 seconds

[Smith, Stan]

Hi Fab,
  Your idea of IOC scanning on the bus driver occurrence of IRP_MN_QUERY_DEVICE_RELATIONS has merit, might you suggest a filter as there are at least 8 occurrences during a reboot?
An invocation of 'devcon rescan' invokes 3 separate IRP_MN_QUERY_DEVICE_RELATIONS.

Thanks,

Stan.


>-----Original Message-----
>From: ofw-bounces at lists.openfabrics.org [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Fab Tillier
>Sent: Tuesday, May 03, 2011 11:22 AM
>To: Hefty, Sean; Tzachi Dar; ofw at lists.openfabrics.org
>Subject: Re: [ofw] Doing queries on subnet every 30 seconds
>
>Hefty, Sean wrote on Mon, 2 May 2011 at 10:54:36
>
>>> Is there any objection to disable it by default?
>>
>> I don't object, in fact, I'd prefer it.
>
>We shouldn't be querying on a fixed interval.  I think it would be good to leave the logic there and issue a query when
>IRP_MJ_PNP:IRP_MN_QUERY_DEVICE_RELATIONS is received by the bus driver.  That way, I/O devices can be discovered when users click
>the "rescan hardware" button in the device manager, but otherwise things stay quiet.
>
>Longer term, we would probably want some configuration tools to discover and configure I/O devices.  I believe there's already some logic
>in the bus driver to configure devices statically (at the very least this is how IPoIB is reported, but I thought this was extended to support
>Xsigo), so we're probably just missing tools for discovery/management of those static entries.
>
>-Fab
>
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