What were you trying to do that didn't work?

Testing throughput performance on Intel Phantom Lake DPU card (Senao SX904 https://catalog.redhat.com/hardware/system/detail/256247 ), the testpmd ports go down in the middle of testing when the traffic generator (Trex) send traffic greater than 6Gbps (some times even 1Gbps).

What is the impact of this issue to you?

The card is supposed to handle certain amount of traffic.

Please provide the package NVR for which the bug is seen:

dpdk-24.11.1-2.el9.x86_64.rpm

dpdk-tools-24.11.1-2.el9.x86_64.rpm

5.14.0-570.12.1.el9_6.x86_64

DISTRO=RHEL-9.6.0-updates-20250409.8

How reproducible is this bug?:

100%

Steps to reproduce

1. The procedure to setup and run the test has been recorded in this google doc which also includes the topology:

https://docs.google.com/document/d/1VE6D5mxqg7TDKD3YpNj21uiETxXV5Qp4nALmIQt0Z_8/edit?usp=sharing

Expected results

Testpmd ports should not go down and test traffic should not stop when trex traffic is running.

Actual results

Ports went down and traffic stopped.