[dpdk-dev] RSS API discussion

["Lu, Wenzhuo" <wenzhuo.lu@intel.com>]

Hi Nélio,
 
> Hi Wenzhuo,
> 
> We should discuss about this API for a future release of DPDK because this one
> lacks in flexibility.  Some other NICs have indirection tables with a
> different/configurable size, and the current API does not help to manage it.
> 
> For ConnectX-4 I have made a lot of hacks to avoid changing the DPDK API,
> "[dpdk-dev] [PATCH 0/3] Add RETA configuration to MLX5".
> http://dpdk.org/ml/archives/dev/2015-October/024681.html
> 
> From a user point of view, to update the RETA table, the API expects the user to
> know the size of it to update or query.  With your patchset, Intel have two
> indirection table sizes now, with Mellanox ConnectX-4, I fixed to the size of 512
> entries because it is not fixed by default.
> 
> How about discussing this in a separate thread?
Sure, I changed the tittle.
But I'm afraid I don't catch up with you. I have 2 questions, 1, Why the reta size cannot be predict on  Mellanox ConnectX-4? 2, I don't understand the meaning when you say the reta size is not fixed by default on Mellanox ConnectX-4.
Would you like to give more details of the Mellanox ConnectX-4's behavior? It'll be helpful to understand this problem.

> 
> Regards,
> 
> --
> Nélio Laranjeiro
> 6WIND