tree 0d6e04b5a6a44c4de138bc829fcf554a2553491b
parent 1ab2f8c699d8e91c97f64c9871bcc89c107cdeef
author Julian Wiedmann <jwi@linux.ibm.com> 1585128904 +0100
committer David S. Miller <davem@davemloft.net> 1585163235 -0700

s390/qeth: add TX IRQ coalescing support for IQD devices

Since IQD devices complete (most of) their transmissions synchronously,
they don't offer TX completion IRQs and have no HW coalescing controls.
But we can fake the easy parts in SW, and give the user some control wrt
to how often the TX NAPI code should be triggered to process the TX
completions.

Having per-queue controls can in particular help the dedicated mcast
queue, as it likely benefits from different fine-tuning than what the
ucast queues need.

CC: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>