[dpdk-dev] [PATCH] doc: add sampling and mirroring in testpmd guide

[Ferruh Yigit]

On 3/9/2021 1:18 PM, Jiawei Wang wrote:
> Update documentation for sample action usage in testpmd and
> show the command line example.
> 

+1 to document this.

Indeed for all testpmd flow update, it must be mandatory to update "Flow rules 
management" section for it, Ori what do you think?

> Signed-off-by: Jiawei Wang <jiaweiw at nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>

<...>

> +Sample Sampling/Mirroring rules
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +Sample/Mirroring rules can be set by the following commands
> +
> +NIC-RX Sampling rule, the matched ingress packets are duplicated and sent to
> +the queue 1, and each second packets are marked with 0x1234 and sent to
> +queue 0.
> +

Also each second packets duplicated to queue 1, isn't it, because of 'ratio 2'?

> +::
> +
> + testpmd> set sample_actions 0 mark id  0x1234 / queue index 0 / end
> + testpmd> flow create 0 ingress group 1 pattern eth / end actions
> +        sample ratio 2 index 0 / queue index 1 / end
> +
> +E-Switch Sampling rule, the matched ingress packets are duplicated and sent
> +to port id 2, and each second packets are sent to eswitch manager.
> +

what is 'E-Switch', or "eswitch manager", isn't the mirror rule generic?