From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [PATCH v3 3/3] app/testpmd: add debug command Tx
	metadata set
Date: Fri, 5 Oct 2018 14:27:39 +0100
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To: Dekel Peled <dekelp@mellanox.com>, wenzhuo.lu@intel.com,
 jingjing.wu@intel.com, bernard.iremonger@intel.com, dev@dpdk.org,
 olivier.matz@6wind.com, adrien.mazarguil@6wind.com, thomas@monjalon.net,
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On 9/27/2018 2:57 PM, Dekel Peled wrote:
> As described in [1],[2] this series adds option to set metadata value as
> match pattern when creating a new flow rule.
> 
> This patch introduces code for debug porpuse only.
> The new debug command takes a 32 bit value and stores it per port.
> testpmd will add to any Tx packet sent from this port the metadata
> value, and set ol_flags accordingly.
> 
> [1] "ethdev: support metadata as flow rule criteria"
> [2] "app/testpmd: support metadata as flow rule criteria"
> 
> Signed-off-by: Dekel Peled <dekelp@mellanox.com>

<...>

> @@ -851,6 +851,13 @@ Disable hardware insertion of a VLAN header in packets sent on a port::
>  
>     testpmd> tx_vlan reset (port_id)
>  
> +tx_metadata set
> +~~~~~~~~~~~~~~~
> +
> +Set metadata value to insert in packets sent to PMD::
> +
> +   testpmd> tx_metadata set (port_id) (value)

I have commented to previous version, but same applies here, please check:
https://mails.dpdk.org/archives/dev/2018-October/114553.html