[ewg] Re: pkey change handling patch

Yosef Etigin yosefe at voltaire.com
Thu Apr 26 07:17:15 PDT 2007


Michael S. Tsirkin wrote:
>>Quoting Moni Levy <monil at voltaire.com>:
>>Subject: Re: pkey change handling patch
>>
>>On 4/25/07, Roland Dreier <rdreier at cisco.com> wrote:
>>
>>>If you want to tackle more of the cache elimination plan we discussed
>>>that would be great though.
>>>
>>
>>One more issue I looked into that in my opinion needs to be discussed
>>is that we do not have an easy api that should provide us with the
>>whole PKEY table and one for the whole GID table for a specific port.
>>I know that ib_process_mad can be used it's just not user friendly.
>>The only thing we have now is ib_query_pkey that gets us one pkey from
>>a specific index and is implemented to get the 32 pkeys chunks under
>>the hood (and something similar for gids). Do we need something like
>>ib_get_pkey_table & ib_get_gid_table calls ? Just an interesting fact:
>>ib_cache_update on a Mellanox card performs 64 + 64 + 1 = 129 commands
>>instead the really needed 5 :)
> 
> 
> If the intended usage is to speed up ib_cache_update, the point is
> moot I think since we agreed we are getting rid of it.
> 

Which source file the without-caching functions should go to?

--Yossi



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