[dpdk-dev] [PATCH 1/2] doc: update mlx5 statistics query

[Nelio Laranjeiro]

On Wed, Nov 29, 2017 at 01:29:07PM +0200, Shahaf Shuler wrote:
> Update the guide with more details on the different statistics query
> possible with MLX5 PMD.
> 
> Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
> ---
>  doc/guides/nics/mlx5.rst | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
> index f9558da89..154db64d7 100644
> --- a/doc/guides/nics/mlx5.rst
> +++ b/doc/guides/nics/mlx5.rst
> @@ -105,8 +105,6 @@ Limitations
>  -----------
>  
>  - Inner RSS for VXLAN frames is not supported yet.
> -- Port statistics through software counters only. Flow statistics are
> -  supported by hardware counters.
>  - Hardware checksum RX offloads for VXLAN inner header are not supported yet.
>  - Forked secondary process not supported.
>  - Flow pattern without any specific vlan will match for vlan packets as well:
> @@ -134,6 +132,17 @@ Limitations
>    to 0 are not supported.
>  - VXLAN TSO and checksum offloads are not supported on VM.
>  
> +Statistics
> +----------
> +
> +MLX5 supports various of methods to report statistics:
> +
> +Port statistics can be queried using ``rte_eth_stats_get()``. The port statistics are through SW only and counts the number of packets received or sent successfully by the PMD.
> +
> +Extended statistics can be queried using ``rte_eth_xstats_get()``. The extended statistics expose a wider set of counters counted by the device. The extended port statistics counts the number of packets received or sent successfully by the port. As Mellanox NICs are using the :ref:`Bifurcated Linux Driver <linux_gsg_linux_drivers>` those counters counts also packet received or sent by the Linux kernel. The counters with ``_phy`` suffix counts the total events on the physical port, therefore not valid for VF.
> +
> +Finally per-flow statistics can by queried using ``rte_flow_query`` when attaching a count action for specific flow. The flow counter counts the number of packets received successfully by the port and match the specific flow.
> +
>  Configuration
>  -------------
>  
> -- 
> 2.12.0
 
For the series,

Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>

Thanks,

-- 
Nélio Laranjeiro
6WIND