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From: hanoh haim <hhaim.hanoh@gmail.com>
Date: Tue, 14 Jul 2020 16:08:42 +0300
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Subject: [dpdk-dev] Qos issue with new DPDK 20.02 and i40e driver
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Hi i40e driver experts,
We are **not** a typical user of i40e dpdk driver, we are using tx Qos
configuration (dcb) with strict latency tx queues. The feature stops
working with a new firmware 7.0.x.
We are using DDP (another thing that is not standard) to solve the drop
rate issue.

dpdk 19.05 - works fine
dpdk 20.02 (with new firmware) - does not work

I tried to look into what changed between 19.05->20.02 that was related to
dbc and couldn't find. Our patch is rather small, for now we have a
workaround (allocating one more tx queue) but it has not solved the problem.

more info here:
https://github.com/cisco-system-traffic-generator/trex-core/issues/508

Does it ring a bell?

-- 
Hanoh
Sent from my iPhone