linux-stable/drivers/s390
Julian Wiedmann b7493e91c1 s390/qeth: use Read device to query hypervisor for MAC
For z/VM NICs, qeth needs to consider which of the three CCW devices in
an MPC group it uses for requesting a managed MAC address.

On the Base device, the hypervisor returns a default MAC which is
pre-assigned when creating the NIC (this MAC is also returned by the
READ MAC primitive). Querying any other device results in the allocation
of an additional MAC address.

For consistency with READ MAC and to avoid using up more addresses than
necessary, it is preferable to use the NIC's default MAC. So switch the
the diag26c over to using a NIC's Read device, which should always be
identical to the Base device.

Fixes: ec61bd2fd2 ("s390/qeth: use diag26c to get MAC address on L2")
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-22 14:42:32 -04:00
..
block s390: remove couple of duplicate includes 2018-04-16 09:10:24 +02:00
char s390/sclp: avoid potential usage of uninitialized value 2018-04-16 09:10:17 +02:00
cio s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
crypto s390/zcrypt: Support up to 256 crypto adapters. 2018-04-11 10:36:27 +02:00
net s390/qeth: use Read device to query hypervisor for MAC 2018-04-22 14:42:32 -04:00
scsi
virtio
Makefile