netdev - Re: [RFC PATCH net-next 08/15] net/sched: taprio: calculate budgets per traffic class

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Message-ID: <87bkmivp7v.fsf@kurt>
Date:   Sat, 28 Jan 2023 13:05:40 +0100
From:   Kurt Kanzenbach <kurt@...utronix.de>
To:     Vladimir Oltean <vladimir.oltean@....com>, netdev@...r.kernel.org
Cc:     Vinicius Costa Gomes <vinicius.gomes@...el.com>
Subject: Re: [RFC PATCH net-next 08/15] net/sched: taprio: calculate budgets
 per traffic class

On Sat Jan 28 2023, Vladimir Oltean wrote:
> Currently taprio assumes that the budget for a traffic class expires at
> the end of the current interval as if the next interval contains a "gate
> close" event for this traffic class.
>
> This is, however, an unfounded assumption. Allow schedule entry
> intervals to be fused together for a particular traffic class by
> calculating the budget until the gate *actually* closes.
>
> This means we need to keep budgets per traffic class, and we also need
> to update the budget consumption procedure.
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Kurt Kanzenbach <kurt@...utronix.de>

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