Re: [net-next 0/4] devlink: add dry run support for flash update

On Fri, 8 Oct 2021 21:43:32 +0000 Keller, Jacob E wrote:

quoted

quoted

Hmm, old kernel vs. new-userspace, the requested dry-run, won't be
really dry run. I guess that user might be surprised in that case...  

Would it be enough to do a policy dump in user space to check attr is
recognized and add a warning that this is required next to the attr
in the uAPI header?  

Doesn't the policy checks prevent any unknown attributes? 
Or are unknown attributes silently ignored?

Did you test it?

DEVLINK_CMD_FLASH_UPDATE has GENL_DONT_VALIDATE_STRICT set.