Re: [PATCH nft 2/3] meta: add prandom matching

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On 04.02, Florian Westphal wrote:
> Florian Westphal <fw@xxxxxxxxx> wrote:
>
> > > What should happen when user asks for meta random 42.23 ?
> > 
> > That still stands, where would this error be detect best?
> 
> I've also been unable to figure out where the u32 scaling has
> to be performed, netlink_linearize.c seems to be a very poor place
> for this since it would mean special-casing netlink_gen_cmp
> to check for OP_LTE and presence of EXPR_META with the meta PRANDOM
> key...?
> 
> In fact, doing the scaling via precision_type seems to
> be a lot simpler as then its applied only in this one case of the
> prandom META_TEMPLATE while keeping this detail limited to meta.c.

Yes, on second thought I agree, sorry. Maybe the work is not lost though,
what does seem to make sense is to use a float basetype and derive your
probability type from that.
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