TSN Frame Preemption (802.1Qbu) Test on i.MX8MP EVK

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TSN Frame Preemption (802.1Qbu) Test on i.MX8MP EVK

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ceroone
Contributor II

Hello,

I have an i.MX8M PLUS EVK board and I want to perform the Frame Preemption test based on the OpenIL v10 user guide.

To do so, I run the following command:

# ethtool --set-frame-preemption eth1 preemptible-queues-mask 0x02 min-frag-size 60

Then I run the following test :

# ./pktgen/pktgen_twoqueue.sh -i eth1 -q 1 -s 1000 -n 3000

However, according to the logs, no frame has been preempted. I also checked with Wireshark at the other end of the link and there is no trace of preemption.

Moreover, when I run the following command, it says that Frame Preemption is not active :

# ethtool --show-frame-preemption eth1
Frame preemption settings for eth1:
        support: supported
        active: not active
        supported queues: 0x3f
        supported queues: 0x2
        minimum fragment size: 64

So, how should I activate it?

Thank you for your help.

ceroone

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jimmychan
NXP TechSupport
NXP TechSupport
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