On Tue, Aug 29, 2023 at 07:07:57AM -0700, Richard Cochran wrote:

quoted

The operation can be controlled via sysfs. See file
Documentation/ABI/testing/sysfs-ptp for more details.

No need for new sysfs hooks.

Just add a ioctl that adds a filter to an open file.
The filter can be a simple bit mask of say, 1024 bits.

Thanks,
Richard