On Tue, 17 Feb 2026 09:33:56 +0100 Lorenzo Bianconi wrote: > + * In case of success, ``ip_summed`` is set to the RX checksum result. > Possible > + * values are: > + * ``XDP_CHECKSUM_NONE`` > + * ``XDP_CHECKSUM_UNNECESSARY`` > + * ``XDP_CHECKSUM_COMPLETE`` > + * > + * In case of success, ``cksum_meta`` contains the hw computed checksum value > + * for ``XDP_CHECKSUM_COMPLETE`` or the ``csum_level`` for > + * ``XDP_CHECKSUM_UNNECESSARY``. It is set to 0 for ``XDP_CHECKSUM_NONE``
It's fairly common for NICs to report both csum complete and unnecessary. Which one should the driver return in that case? What if the user prefers the other one?..
