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To: "Mcnamara, John" <john.mcnamara@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
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From: Stefan Binna <stefan.binna@salzburgresearch.at>
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Date: Tue, 18 Aug 2015 09:38:58 +0200
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Subject: Re: [dpdk-dev] ieee1588fwd.c implementation
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Hi,

alright, I'll look it up.

Thanks for your help.

Kind regards,
Stefan.

Am 17.08.2015 um 16:21 schrieb Mcnamara, John:
>> -----Original Message-----
>> From: Stefan Binna [mailto:stefan.binna@salzburgresearch.at]
>> Sent: Monday, August 17, 2015 1:48 AM
>> To: Mcnamara, John; dev@dpdk.org
>> Subject: Re: [dpdk-dev] ieee1588fwd.c implementation
>>
>> Hi,
>>
>> I'm using the Intel NIC 82547L.
>> Furthermore I'm using DPDK-2.0.0, the last stable download from the
>> official homepage.
>>
>> Is there any method to "measure" the time the NIC takes to process the
>> packet from the input port (e.g. port 0) to the output port (port 1)?
>> Should be around 8 to 40 microseconds depending on the packet size?
>
> Hi Stefan,
>
> The RX/TX callbacks sample application looks closer to what you are looking for:
>
> "The RX/TX Callbacks sample application is a packet forwarding application
> that demonstrates the use of user defined callbacks on received and transmitted
> packets. The application performs a simple latency check, using callbacks,
> to determine the time packets spend within the application".
>
>      http://dpdk.org/doc/guides/sample_app_ug/rxtx_callbacks.html
>
>      http://dpdk.org/browse/dpdk/tree/examples/rxtx_callbacks/main.c
>
> John.