On Tue, Mar 31, 2020 at 02:21:00PM -0700, Maciej Żenczykowski wrote:

Right, this is not in 5.6 as it's only in net-next atm as it was only
merged very recently.
I mentioned this in the commit message.

I'm not sure what you mean by code that uses this.
You can checkout aosp source and look there...
There's the kernel code (that's effectively already linked from the
commit message), and the iptables userspace changes (
https://android.googlesource.com/platform/external/iptables/+/refs/heads/master/extensions/libxt_IDLETIMER.c#39

OK, so this is field ised set in userspace.

), and the netd C++/Java layer that uses iptables -j IDLETIMER
--send_nl_msg 1 (
https://android.googlesource.com/platform/system/netd/+/refs/heads/master/server/IdletimerController.cpp#151
) and the resulting notifications parsing (can't easily find it atm).

If you mean by code that uses this patch... that's impossible as this
patch doesn't implement a usable feature.
It just moves the offset.

Could you clarify what you're asking for?

Maybe I'm misunderstanding. How is this field used in aosp?

I mean, if --send_nl_msg 1 is passed, how does the existing behaviour
changes?