On Tue, Nov 21, 2023 at 06:31:14PM +0100, Köry Maincent wrote: > If I summarize, a solution could be this: > > - Expand struct hwtstamp_config with a phc_index member for the SIOCG/SHWTSTAMP > commands. > To keep backward compatibility if phc_index is not set in the hwtstamp_config > data from userspace use the default hwtstamp (the default being selected as > done in my patch series). > Is this possible, would it breaks things? You can't "expand" hwtstamp_config because it is an established ABI. (You could introduce SIOC[GS]HWTSTAMP_2 with an expanded layout) Thanks, Richard
