net/sched: taprio: calculate budgets per traffic class

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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@nxp.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Oltean 2023-02-07 15:54:33 +02:00 • committed by David S. Miller

parent e551755111

commit d2ad689dec

1 changed files with 46 additions and 8 deletions

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net/sched/sch_taprio.c

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