[dpdk-users] PktGen Ethertype

Wiles, Keith keith.wiles at intel.com
Wed May 10 15:53:50 CEST 2017

> On May 10, 2017, at 4:09 AM, James Bensley <jwbensley at gmail.com> wrote:
> On 9 May 2017 at 14:56, Wiles, Keith <keith.wiles at intel.com> wrote:
> Hi Keith!
>> The range command can allow you to adjust the type field and then send those in a burst. The problem is pktgen was designed to send packets at a high rate if needed and that means setting up the packets before hand. The number of packets being able to be setup before hand is 8192. The random command can adjust the ether type randomly for each packet with a performance hit. Maybe one of these would help.
> So it sounds like the range command is what I want then, if I can
> systematically adjust the EtherType field (e.g. I can explicitly say
> start at 0x0 and run to 0xFFFF) just with the caveat that I have to
> send a burst of packet for each loop iteration?

You would need to set the range between 0-8191, then another loop with 8192-((2 * 8192) -1) and so forth in a lua script.

> If that is the case I don't mind, it will still get the job done of
> testing every Ethertype through a DUT. Any chance I can lower the
> burst size on the CLI to 64 packets for example to speed things up?
>> Also I am more then willing to take patches :-)
> Sure, I didn't want to spend hours testing to find out that I can't do
> what I wanted to do which is why I asked here.
> Sounds like it can be done so I'll have a poke around with the code
> and see what I can do.
> Thanks for your help it is greatly appreciated,
> James.


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