Hi Matan,

On 6/2/20 5:47 PM, Matan Azrad wrote:
> The vDPA device offloads all the datapath of the vhost device to the HW
> device.
> 
> In order to expose to the user traffic information this patch
> introduces new 3 APIs to get traffic statistics, the device statistics
> name and to reset the statistics per virtio queue.
> 
> The statistics are taken directly from the vDPA driver managing the HW
> device and can be different for each vendor driver.
> 
> Signed-off-by: Matan Azrad <ma...@mellanox.com>
> ---
>  doc/guides/rel_notes/release_20_08.rst    |   5 ++
>  doc/guides/vdpadevs/features/default.ini  |   1 +
>  doc/guides/vdpadevs/features_overview.rst |   3 +
>  lib/librte_vhost/rte_vdpa.h               | 115 
> +++++++++++++++++++++++++++++-
>  lib/librte_vhost/rte_vhost_version.map    |   3 +
>  lib/librte_vhost/vdpa.c                   |  47 ++++++++++++
>  6 files changed, 173 insertions(+), 1 deletion(-)
> 
> diff --git a/doc/guides/rel_notes/release_20_08.rst 
> b/doc/guides/rel_notes/release_20_08.rst
> index 39064af..d6f09bd 100644
> --- a/doc/guides/rel_notes/release_20_08.rst
> +++ b/doc/guides/rel_notes/release_20_08.rst
> @@ -56,6 +56,11 @@ New Features
>       Also, make sure to start the actual text at the margin.
>       =========================================================
>  
> +   * **Added vDPA device APIs to query virtio queue statistics.**
> +
> +     A new 3 APIs has been added to query virtio queue statistics, to get 
> their

s/A new 3 APIs/3 new APIs/

Other than this minor typo, it looks all good to me.

Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>

I would like Intel feedback on this new API. If no feedback by June
12th, I'll merge it as-is (no need to resend for the typo, I'll fixup
while applying).


Xiao, does the API sound right to you?
Do you have Virtio counters in your IFC device that you could expose?

Thanks in advance,
Maxime

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