[dpdk-dev] [PATCH] ethdev: fix xstat name of basic stats per queue

Ferruh Yigit ferruh.yigit at intel.com
Thu Oct 8 17:41:53 CEST 2020


On 10/7/2020 10:48 PM, Thomas Monjalon wrote:
> As described in doc/guides/prog_guide/poll_mode_drv.rst,
> the naming scheme for the xstats is parts separated with underscore:
> 	* direction
> 	* detail 1
> 	* detail 2
> 	* detail n
> 	* unit
> where detail 1 can be "q" followed with a queue number.
> It means the name of the stats per queue should be rx_qN_* or tx_qN_*.
> 
> The second underscore was missing so far.
> Fixing the basic xstat names may be considered an API change,
> that's why it should not be backported.
> 
> While fixing this mistake, some examples of the naming scheme
> are given as part of the API documentation of rte_eth_xstat_name.
> More proposals about standardizing statistics:
> 	http://fast.dpdk.org/events/slides/DPDK-2019-09-Ethernet_Statistics.pdf
> 
> Fixes: bd6aa172cf35 ("ethdev: fetch extended statistics with integer ids")
> 
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>

no objection,
Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>

>   doc/guides/rel_notes/release_20_11.rst | 8 +++++++-
>   lib/librte_ethdev/rte_ethdev.c         | 4 ++--
>   lib/librte_ethdev/rte_ethdev.h         | 7 +++++++
>   3 files changed, 16 insertions(+), 3 deletions(-)
> 
> diff --git a/doc/guides/rel_notes/release_20_11.rst b/doc/guides/rel_notes/release_20_11.rst
> index cdf20404c9..d0d77c5d3d 100644
> --- a/doc/guides/rel_notes/release_20_11.rst
> +++ b/doc/guides/rel_notes/release_20_11.rst
> @@ -200,7 +200,13 @@ API Changes
>   
>   * ethdev: ``rte_eth_rx_descriptor_done()`` API has been deprecated.
>   
> -* Renamed internal ethdev APIs:
> +* ethdev: Renamed basic statistics per queue. An underscore is inserted
> +  between the queue number and the rest of the xstat name:
> +
> +  * ``rx_qN*`` -> ``rx_qN_*``
> +  * ``tx_qN*`` -> ``tx_qN_*``
> +

As far as I remember collect plugin was using xstat output, does this rename 
affects it? Or any other telemetry application relying on xstats.

Harry, Ciara, Kevin, do you know anything that will be affected from rename?


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