s390/qeth: cache max number of available buffer elements

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The QETH_MAX_BUFFER_ELEMENTS() macro effectively returns a constant
value. To avoid some redundant pointer chasing and computations in the
xmit hot path, cache this value in the queue struct.

Take this as opportunity to shrink some of the queue struct's fields to
their appropriate value range, slightly reducing its total size.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Julian Wiedmann 2019-04-25 18:25:59 +02:00 • committed by David S. Miller

parent 7b579ce57e

commit 4e26c5fe55

3 changed files with 22 additions and 24 deletions

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10

drivers/s390/net/qeth_core.h

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34

drivers/s390/net/qeth_core_main.c

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2

drivers/s390/net/qeth_l2_main.c

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