On Tue, 2019-03-26 at 12:42 +0000, Sergey Matyukevich wrote:
> Hi all,
>
> Linux cfg80211 regulatory subsystem uses CRDA timeout to ensure completion
> of regulatory updates, performed by user-space software. See call_crda
> functon in net/wireless/reg.c:
>
> static int call_crda(const char *alpha2)
> {
> ...
>
> queue_delayed_work(system_power_efficient_wq,
> &crda_timeout, msecs_to_jiffies(3142));
> return 0;
> }
>
> So regulatory update/reset operations shall be completed in 3142 msec.
> And that includes processing of regulatory notifiers for all the
> wireless cards in the system.
>
> It is not quite clear where this specific timeout value came from.
> Original commit (a90c7a313a1c5b) doesn't go into details about it.
>
> Any ideas where it could come from ?
No particular reason. It's just ~pi seconds, and IIRC Luis thought that
was funny :-)
Are you seeing any issues with that?
johannes
