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Date:   Wed, 21 Oct 2020 11:28:38 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Petr Machata <me@...chata.org>
Cc:     Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        dsahern@...il.com, john.fastabend@...il.com, jiri@...dia.com,
        idosch@...dia.com
Subject: Re: [PATCH iproute2-next 15/15] dcb: Add a subtool for the DCB ETS
 object

On Tue, 20 Oct 2020 22:43:37 +0200
Petr Machata <me@...chata.org> wrote:

> Jakub Kicinski <kuba@...nel.org> writes:
> 
> > On Tue, 20 Oct 2020 02:58:23 +0200 Petr Machata wrote:  
> >> +static void dcb_ets_print_cbs(FILE *fp, const struct ieee_ets *ets)
> >> +{
> >> +	print_string(PRINT_ANY, "cbs", "cbs %s ", ets->cbs ? "on" : "off");
> >> +}  
> >
> > I'd personally lean in the direction ethtool is taking and try to limit
> > string values in json output as much as possible. This would be a good
> > fit for bool.  
> 
> Yep, makes sense. The value is not user-toggleable, so the on / off
> there is just arbitrary.
> 
> I'll consider it for "willing" as well. That one is user-toggleable, and
> the "on" / "off" makes sense for consistency with the command line. But
> that doesn't mean it can't be a boolean in JSON.

There are three ways of representing a boolean. You chose the worst.
Option 1: is to use a json null value to indicate presence.
      this works well for a flag.
Option 2: is to use json bool.
	this looks awkward in non-json output
Option 3: is to use a string
     	but this makes the string output something harder to consume
	in json.

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