E810 Series GRE v1 Drop Issue [NVM Version 4.0]

[AhmetAk]

Hello,

We are using Intel E810 Series NIC in our SDN Network 2x25G or 2x100G. After swap NIC with E810.  Our customers facing PPTP and EOIP connection issues due to GRE Enhanced (V1).

We observed that when GRE v1 packets send to NIC, NIC drop packets immediately, they are not even reach to linux kernel.  Most probably due to checksum error in FW of NIC.

We saw same issue @ErnestoR's topic since 2021.

https://community.intel.com/t5/Ethernet-Products/E-810C-GRE-and-VLANs/td-p/1291754

At this topic problem was accepted and said that problem will be solved in 2022. 

We are almost in 2023 and problem still continue with NVM Version 4 (Lastest FW at this date.)

Could we learn when it will be solved in 2022 ?

This is really big issue for us since the issue breaks net neutrality.

If there is bypass for FW checksum control, we can consider to use it.

Have a nice day.

[ErnestoR]

Hi Ahmet,

not sure if it is feasible for you, but the only workaround we could find is to have the GRE packet embedded in two VLANs. In this way the whole driver packet processing breaks, and the packet is not dropped. There are a number of drawbacks, including the impossibility to split the incoming traffic into different queues. Or you could change NIC vendor.

Regards,

Ernesto

[AhmetAk]

Hello ErnestoR,

So much thank you for this valuable trick, we will try it even it will break the server performance. Eventually Intel implement GREv1 and fix this bug. 

Thank you again.

Regards

[Caguicla_Intel]

Hello AhmetAk,

Thank you for posting in Intel Ethernet Communities. 

Please provide the following information for our record purposes. 

1. Driver version of your E810 NIC

2. Exact model of your NIC. You may provide the PBA number of the adapter. You may refer to the link below on where to find the PBA number. It consist of 6-3 digit number located at the last part of the serial number. This would help us identify if you are using an Original Equipment Manufacturer or retail version of Intel Ethernet Adapter. Please also let us know if you see Yottamark or BradyID sticker from the adapter.

Identify Your Intel® Network Adapter Model Using PBA Number

https://www.intel.com/content/www/us/en/support/articles/000007022/ethernet-products/500-series-network-adapters-up-to-10gbe.html

Hoping to hear from you soon. 

Should there be no response from you, I’ll make sure to reach out after 3 business days. 

Best regards,

Crisselle C.

Intel® Customer Support

[Caguicla_Intel]

Hello AhmetAk,

Good day!

This is just a follow up to check if you received our initial response. If yes, please confirm and provide the information we request for us to proceed checking your query. 

Awaiting to your reply. 

We will follow up after 3 business days in case we don't hear from you. 

Best regards,

Crisselle C.

Intel Customer Support

[Caguicla_Intel]

Hello AhmetAk,

I hope this message finds you well!

Please be informed that we will now close this request since we haven't received any response from our previous follow ups. Just feel free to post a new question if you may have any other inquiry in the future as this thread will no longer be monitored.

Have a good day and stay safe!

Best regards,

Crisselle C.

Intel® Customer Support

[RosarioPingaro]

@Caguicla_Intel  any update about this "new feature" to support GRE v1??

now the E810 disacrd this kind of packet.

The new feature was due on 2022 but noew we are approcing 2025 and we still can't use the boards in production due to this issue.

regards