[Feature request]: AF_XDP TX/RX checksum offloads

[zxjcarrot]

Preliminary Actions

• I have searched the existing issues and didn't find a duplicate.

Driver Type

Linux kernel driver for Elastic Network Adapter (ENA)

Motivation

Would love to have Tx/Rx Checksum offload support for AF_XDP sockets to reduce CPU overhead. This is supported in DPDK drivers and the kernel network stack. This also makes user space network stacks built on top of AF_XDP competitive against DPDK-based solutions.

Solution

Kernel already has metadata defined: https://www.kernel.org/doc/html/next/networking/xsk-tx-metadata.html
And there is ongoing work: https://lore.kernel.org/bpf/20231102225837.1141915-1-sdf@google.com/T/#t
It would be great for ENA to implement such an offload.

Contact Details

No response

[davidarinzon]

Hi @zxjcarrot

Thanks for the suggestion, it is on our roadmap, stay tuned for updates.