On Mon, 8 Dec 2014 14:04:56 +0100, Delio Brignoli wrote: > Yes, I was thinking it would allow to query if the driver supports this > feature and get/set current offsets.
I agree. That way, with correctly implemented drivers the user will get the right correction for free but will be still able to overrule the values. What I'm thinking of is having an ethtool operation to get/set ingress/egress correction. This will be handled in the kernel (i.e. not propagated to the drivers to prevent misuse). The driver provides initial correction values (or zero if they're unknown) but user space is free to alter them or reset them to the initial values. It is obviously per-interface setting. A nice bonus is this will work with all program using the time stamping interface, not just linuxptp. This is compatible with Richard's patchset, only the config options would call the ethtool op instead of doing the correction in ptp4l. Jiri -- Jiri Benc ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
