s390/qeth: indicate contiguous TX buffer elements

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The TX path usually maps the full content of a page into a buffer
element. But there's specific skb layouts (ie. linearized TSO skbs)
where the HW header (1) requires a separate buffer element, and (2) is
page-contiguous with the packet data that's mapped into the next buffer
element.
Flag such buffer elements accordingly, so that HW can optimize its data
access for them.

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

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Julian Wiedmann 2020-05-06 10:09:46 +02:00 • committed by David S. Miller

parent fff1aceb88

commit a875fd1620

1 changed files with 10 additions and 2 deletions

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12

drivers/s390/net/qeth_core_main.c

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