[openib-general] [PATCH] osm: PathRecord prefer 1K MTU for MT23108 devices

[Eitan Zahavi]

Hi Hal,

Many thanks!

Eitan

Hal Rosenstock wrote:

>Hi Eitan,
>
>On Fri, 2006-09-15 at 07:45, Eitan Zahavi wrote:
>  
>
>>Hi Hal
>>
>>The following patch solves an issue with OpenSM preferring largest MTU 
>>for PathRecord/MultiPathRecord for paths going to or from MT23108 (Tavor)
>>devices instead of using a 1K MTU which is best for this device.
>>
>>Since this is a device specific quirk I have added a configuration option
>>named enable_quirks which is FALSE by default to enable this functionality.
>>
>>To summarize the functionality change:
>>1. Added enable_quirks option 
>>2. If enable_quirks is FALSE do nothing
>>3. If a specific MTU is requested (either =2K or >1K) do nothing
>>4. If either source port or destination port is a Tavor device  
>>	MTU is limited to 1K (can be further reduced by path traversal) 
>>
>>Target is both trunk and OFED 1.1
>>    
>>
>
>Thanks. Applied to both trunk and 1.1 with the MPR compmask change that
>Sasha saw and some other cosmetic changes. Please retest to be sure.
>
>-- Hal
>
>  
>
>>Thanks
>>
>>Eitan
>>
>>Signed-off-by:  Eitan Zahavi <eitan at mellanox.co.il>
>>    
>>
>
>
>
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