Re: [dpdk-dev] [PATCH v5 0/6] Enable VF RSS for Niantic

[Vlad Zolotarov <vladz@cloudius-systems.com>]

On 01/07/15 08:32, Ouyang Changchun wrote:
> This patch enables VF RSS for Niantic, which allow each VF having at most 4 queues.
> The actual queue number per VF depends on the total number of pool, which is
> determined by the max number of VF at PF initialization stage and the number of
> queue specified in config:
> 1) If the max number of VF is in the range from 1 to 32, and the number of rxq is 4
> ('--rxq 4' in testpmd), then there is totally 32 pools(ETH_32_POOLS), and each VF
> have 4 queues;
>   
> 2)If the max number of VF is in the range from 33 to 64, and the number of rxq is 2
> ('--rxq 2' in testpmd), then there is totally 64 pools(ETH_64_POOLS), and each VF
> have 2 queues;
>   
> On host, to enable VF RSS functionality, rx mq mode should be set as ETH_MQ_RX_VMDQ_RSS
> or ETH_MQ_RX_RSS mode, and SRIOV mode should be activated(max_vfs >= 1).
> It also needs config VF RSS information like hash function, RSS key, RSS key length.
>   
> The limitation for Niantic VF RSS is:
> the hash and key are shared among PF and all VF, the RETA table with 128 entries are
> also shared among PF and all VF. So it could not to provide a method to query the hash
> and reta content per VF on guest, while, if possible, please query them on host(PF) for
> the shared RETA information.

I've acked PATCH1 and PATCH2 already before and since there are no 
changes in them, pls.,  consider them ACKed... ;)

>
> changes in v5:
>    - Fix minor issue and some comments;
>
> changes in v4:
>    - Extract a function to remove embeded switch-case statement;
>    - Check whether RX queue number is a valid one, otherwise return error;
>    - Update the description a bit;
>   
> changes in v3:
>    - More cleanup;
>   
> changes in v2:
>    - Update the description;
>    - Use receiving queue number('--rxq <q-num>') specified in config to determine the
>      number of pool and the number of queue per VF;
>   
> changes in v1:
>    - Config VF RSS;
>
> Changchun Ouyang (6):
>    ixgbe: Code cleanup
>    ixgbe: Negotiate VF API version
>    ixgbe: Get VF queue number
>    ether: Check VMDq RSS mode
>    ixgbe: Config VF RSS
>    testpmd: Set Rx VMDq RSS mode
>
>   app/test-pmd/testpmd.c              |  15 +++-
>   lib/librte_ether/rte_ethdev.c       |  50 +++++++++++--
>   lib/librte_pmd_ixgbe/ixgbe_ethdev.h |   1 +
>   lib/librte_pmd_ixgbe/ixgbe_pf.c     |  80 ++++++++++++++++++++-
>   lib/librte_pmd_ixgbe/ixgbe_rxtx.c   | 138 ++++++++++++++++++++++++++++--------
>   5 files changed, 248 insertions(+), 36 deletions(-)
>