linux/drivers/s390
Julian Wiedmann cc309f83d1 s390/qeth: clean up fill_buffer() offset logic
For some xmit paths we pass down a data offset to qeth_fill_buffer(),
to indicate that the first k bytes of the skb should be skipped when
mapping it into buffer elements.
Commit acd9776b5c ("s390/qeth: no ETH header for outbound AF_IUCV")
recently switched the offset for the IUCV-over-HiperSockets path
from 0 to ETH_HLEN, and now we have

	device	offset
	OSA	= 0
	IQD	> 0

for all xmit paths.

OSA would previously pass down -1 from do_send_packet(), to distinguish
between 1) OSA and 2) IQD with offset 0. That's no longer needed now,
so have it pass 0, make the offset unsigned and clean up how we apply
the offset in __qeth_fill_buffer().

No change of behaviour for any of our current xmit paths.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-15 10:58:39 -07:00
..
block libnvdimm for 4.13 2017-07-07 09:44:06 -07:00
char mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic 2017-07-12 16:26:03 -07:00
cio s390: chp: handle CRW_ERC_INIT for channel-path status change 2017-07-13 11:28:29 +02:00
crypto s390/zcrypt: Fix missing newlines at some debug feature messages. 2017-07-05 07:35:29 +02:00
net s390/qeth: clean up fill_buffer() offset logic 2017-08-15 10:58:39 -07:00
scsi SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
virtio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-05-16 09:24:44 -07:00
Makefile virtio/s390: rename drivers/s390/kvm -> drivers/s390/virtio 2015-07-07 14:27:06 +03:00