What appears on the wire is still going to be similar.
You have to subsequently ask if it's worth the complexity to do
what you seem to be proposing.
When a single hardware queue fills up, it's the SAME, semantically,
as when a unary TX queue of a traditional device fills up.
There is NO on the wire difference. There will be NO performance
difference, because the device will have work to do as by definition
of one TX queue being full there are some packets queued up to
the device.
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