[openib-general] tavor quirks etc (opensm compliance etc)

[Or Gerlitz]

Michael S. Tsirkin wrote:
>> 3rd Eitan/Michael: what is the bigger picture here? what is the 
>> dependency between these four patches
> 
> In short, [2] is an independent fix to improve tavor performance.
> Other things are not directly related. Detail below.
> 
>> +1 osm:Fix PathRecord bug MTU/rate/PktLife explicitly ignoring selectors
>> +2 osm: tavor quirk
>> +3 IB/rdmacm: tavor quirk
>> +4 IB/ipoib: use appropriate mtu selector for path queries
> 
> In the above:
> [1] is a bug fix I think. It is not required for [2].
> [2] is a feature that improves performance for tavor without need for
>     any other stack/ULP changes
> [3] is a hack that should have same effect as [2] for old SMs, but it needs
>     manual tuning by user. If activated, it unfortunately triggers a bug in opensm
>     that [1] fixes. So it might not be a good idea after all.
> [4] is not strictly necessary, and not related to this patch set -
>     it just happens to also play with MTU selector.
>     It is a strict compliance cleanup that I just happened to notice when
>     I invented [2].
> 

OK, Michael, thanks for the clarifications.

Or.