netdev - Re: [PATCH iproute2-next 1/2] dcb: add new pcp-prio parameter to dcb app

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Date:   Fri, 25 Nov 2022 10:07:24 +0000
From:   <Daniel.Machon@...rochip.com>
To:     <petrm@...dia.com>, <g@...-lt-70577>
CC:     <netdev@...r.kernel.org>, <dsahern@...nel.org>,
        <stephen@...workplumber.org>, <maxime.chevallier@...tlin.com>,
        <vladimir.oltean@....com>, <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH iproute2-next 1/2] dcb: add new pcp-prio parameter to dcb
 app

> Petr Machata <petrm@...dia.com> writes:
> 
> > This looks good to me overall, I just have a few nits.
> 
> Actually, one more fairly fundamental thing that occurred to me. If a
> user doesn't care about DEI, they need to do this using two rules: say
> 1:1 and 1de:1.
> 
> I wonder if it would make sense to assume that people are more likely to
> not care about DEI at all, and make the 1:1 mean that. Then 1:1 would be
> a shorthand for expressing two rules, one for DE=0, one for DE=1.
> 
> If the user does care about DEI, they would either say 1de:1 or 1nd:1,
> depending on what they want the DEI to be.
> 
> If you generally agree with this idea, but don't have spare cycles to
> code it up, would you please just make the PCP keys "${prio}de" and
> "${prio}nd"? (Or whatever, but have the syntax reflect the DEI state in
> both cases.) I think I'll be able to scrape a bit of a free time on some
> weekend to add the syntax sugar.

I think this could be useful and 'de', 'nd' (not-drop-eligible?) is fine
by me. However, it is perfectly useable for me in its current form so I
wont object if you can find the time to code this addition. Is there any
reason to add the '${prio}nd' keys upfront?

/ Daniel