Re: [PATCH v3 6/6] doc: announce TxPP support for E830 adapters

[Bruce Richardson <bruce.richardson@intel.com>]

On Sun, Jun 08, 2025 at 11:32:23AM +0000, Soumyadeep Hore wrote:
> E830 adapters currently support Tx Time based queues.
> 
> Signed-off-by: Soumyadeep Hore <soumyadeep.hore@intel.com>
> ---
>  doc/guides/nics/ice.rst | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst
> index 77985ae5a2..73c5477946 100644
> --- a/doc/guides/nics/ice.rst
> +++ b/doc/guides/nics/ice.rst
> @@ -415,6 +415,22 @@ and add the ``--force-max-simd-bitwidth=64`` startup parameter to disable vector
>  
>     examples/dpdk-ptpclient -c f -n 3 -a 0000:ec:00.1 --force-max-simd-bitwidth=64 -- -T 1 -p 0x1 -c 1
>  
> +Tx Packet Pacing
> +~~~~~~~~~~~~~~~~
> +
> +In order to deliver the timestamp with every packet, a special type of Tx Host Queue is
> +used, the TS Queue. This feature is currently supported only in E830 adapters.
> +
> +The tx_offload ``RTE_ETH_TX_OFFLOAD_SEND_ON_TIMESTAMP`` is used to enable the feature.
> +For example:
> +
> +.. code-block:: console
> +
> +   dpdk-testpmd -a 0000:31:00.0 -c f -n 4 -- -i --tx-offloads=0x200000
> +   set fwd txonly
> +   set txtimes 30000000,1000000
> +   start
> +

These commands need more explanation. Particularly the "set txtimes" one.
What do the values given as parameters actually mean?

>  Generic Flow Support
>  ~~~~~~~~~~~~~~~~~~~~
>  
> -- 
> 2.43.0
>