[PATCH] app/testpmd:add vxlan txonly

[wushaohua]

在 2023/2/18 4:43, Ferruh Yigit 写道:
> On 1/3/2023 2:30 AM,wushaohua at chinatelecom.cn  wrote:
>> From: Shaohua Wu<wushaohua at chinatelecom.cn>
>>
>> Add the vxlan packet sending module to actively send
>> vxlan packets using a common network adapter.
>> The default vni is 1000.
>> example:
>>   ./dpdk-testpmd -l 32-47 -n 16 --file-prefix pg0 -- -i
>> 	--rxq=16 --txq=16 --rxd=1024 --txd=1024
>> 	--txpkts=64 --burst=64  --mbuf-size=4096
>> 	--nb-cores=15  --underlay_tx_only
>> 	--underlay-eth-peer=0,f0:00:00:00:00:66
>> 	--eth-peer=0,08:c0:eb:3e:87:af
>> 	--utx-ip=11.0.0.1,11.0.0.2
>> 	--tx-ip=30.0.0.1,30.0.0.2
>> 	--forward-mode=tuntxonly
>> 	--txonly-multi-flow
>>
>> Signed-off-by: Shaohua Wu<wushaohua at chinatelecom.cn>
> Hi Shaohua,
>
> This is a good feature but I am not sure if this is in the scope of
> testpmd application.
>
> Testpmd has basic packet generation capabilities, and it is useful for
> quick/dirty testing, but for more advanced packet generation perhaps
> other tools like pktgen [1] can be used, what do you think?
>
> What is the justification to have this feature in testpmd, and what is
> your usecase?
>
>
> [1]
> https://git.dpdk.org/apps/pktgen-dpdk/

Hi Ferruh，

Thank you for your review.From what I know now pktgen doesn't seem to support the construction of vxlan packets.

In a real test scenario, testpmd only sends bare packets and cannot cover test scenarios, such as ovs 
decap performance.

Currently, testpmd of this patch is used, and the packet sending performance is 22+Mpps 
with a 25G network adapter.


This is necessary for testing DPU devices or virtualization scenarios.



Best regards.Shaohua
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