I225-LM TX Unit Hang issue

[ASIX_JamesHuang]

We are testing preemption compatibility. We want to know our NIC's preemption function with other company's preemption function can transfer packet correctly. So we bought the Advantech's UNO-148(which has I225LM with TSN function). Here is our testing details.

UNO-148: Yocto/NIC: I225-LM Rev 03/Linux kernel: 5.10.109-rt65-intel-ese-standard-its-rte

OUR_ENV: Ubuntu: 22.04/NIC: OUR_NIC/Linux kernel: 6.8.0-31-generic

Topology: I225LM<--->OUR_NIC, connect directly.

Testing step: open both NIC preemption function, and use Linux kernel packet generator to let both side achieve TX/RX packet transfer.

Issue: When I225 TX to OUR_NIC RX and OUR_NIC TX to I225 RX at the same time. I225 TX to OUR_NIC RX will stop immediately. And #dmesg -w shows: igc 0000:03:00.0 enp3s0: Detected Tx Unit Hang, but OUR_NIC TX to I225 RX can send packet to I225 continuously (No impact). It seems like I225 TX Hang cause the system can't sent packet down.

Question: Does I225-LM Rev 03 with Linux kernel: 5.10 cause the issue happen? Is this a known issue? Do I need to upgrade the kernel to fix this problem? How can i fix the issue?

Regards,

JamesHuang

[ManoranjanDas]

Hello ASIX_JamesHuang,

Greetings of the day!

Thank you for posting your query on the Intel Community Forum. Regarding the I225-LM TX hang issue during your preemption compatibility testing, to better understand the scenario and assist you further, we kindly request the following information:

1.Could you please confirm whether the Intel® Ethernet Controller I225-LM was pre-installed (shipped with the system) or added later as an expansion card?

2.Kindly provide clear images of both sides of the Intel® Ethernet Controller I225-LM.

Thank you for choosing Intel products and services.

Best regards,

Manoranjan

Intel Customer Support Technician

[ASIX_JamesHuang]

Hi Manoranjan,

Thanks for your supporting, I believe that with your help we can find the answer well.

1. pre-installed.

2. It's an embeded system, we bought it from Advantech. The NIC-card is on board. Please refer to the attachment.

Best regards,

JamesHuang

[ManoranjanDas]

Hi ASIX_JamesHuang,

Greetings from Intel!

We sincerely apologize for the inconvenience. However, we are not the appropriate team to assist you with this embedded product.

Based on your query, Intel offers dedicated support for issues related to embedded products. For assistance, please use the following link to submit your query directly : https://community.intel.com/t5/Embedded-Connectivity/bd-p/embedded-networking-connectivity

This will ensure that your question is directed to the appropriate resources for a more accurate and timely response.

Thank you for your support and understanding!

Best regards,

Manoranjan.

Intel Customer Support Technician