On Fri, 5 Aug 2022 16:32:30 +0000 Keller, Jacob E wrote:

quoted

Hm, yes. Don't invest too much effort into rendering per-cmd policies
right now, tho. I've started working on putting the parsing policies
in YAML last Friday. This way we can auto-gen the policy for the kernel
and user space can auto-gen the parser/nl TLV writer. Long story short
we can kill two birds with one stone if you hold off until I have the
format ironed out. For now maybe just fork the policies into two -
with and without dry run attr. We'll improve the granularity later
when doing the YAML conversion.  

Any update on this?

FWIW I started looking at iproute2 code to dump policy and check
whether a specific attribute is accepted by the kernel.

Yes and no, I coded a little bit of it up, coincidentally I have a YAML
policy for genetlink policy querying if that's helpful:

https://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git/tree/tools/net/ynl/samples/nlctrl.c?h=gnl-gen-dpll

I'll try to wrap up the YAML format by today / tomorrow and send an
early RFC, but the codegen part (and everything else really) still
requires much work. Probably another month until I can post the first
non-RFC with error checking, kernel policy generation, uAPI generation
etc.