Ethernet Controller x710: Increasing the max size of the RX descriptor ring

[pjf]

The documentation of the 700-series Ethernet  controller indicates that the Receive Queue Length can be up to (8192 - 32) or 8160.  Section 8.3.3.2.2 Receive Queue Context in FPM in 38.3.3.2.2 Receive Queue Context in FPM.pdf

However, the i40e Linux driver for the X710 Ethernet controller in the 6.6. kernel has a maximum size of 4096.  

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/ethernet/intel/i40e/i40e.h?h=v6.6-rc6#n52

I'm mainly interested in hearing from Intel support if they have any concerns with increasing the maximum from 4096 to 8160 for the X710 controller? 

[IntelSupport]

Hello pjf,

Thank you for posting on the Intel️® communities.

Regarding your question I would highly suggest that you post in below link instead:

https://community.intel.com/t5/Embedded-Products/ct-p/embedded-products

As the issue will be needing more internal information to be provided.

Kindly let us know once you successfully posted in the embedded community site so we can proceed to close this case 06019340.

Best regards,

Nurhayati

Intel Customer Support Technician

[pjf]

I posted on the link that you provided.  thanks.

[IntelSupport]

Hello pjf,

Thank you for your reply.

With this we will proceed to close the case 06019340.

Please do not hesitate to contact us again if you have any further questions by submitting a new case.

Best regards,

Nurhayati

Intel Customer Support Technician