s390/qeth: implement ndo_bridge_getlink for learning_sync

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Documentation/networking/switchdev.txt and 'man bridge' indicate that the
learning_sync bridge attribute is used to indicate whether a given
device will sync MAC addresses learned on its device port to a master
bridge FDB.

learning_sync attribute can not be read while interface is offline (down).
See
'commit e6e771b3d8 ("s390/qeth: detach netdevice while card is offline")'
We return EOPNOTSUPP and not EONODEV in this case, because EONOTSUPP is the
only rc that is tolerated by 'bridge -d link show'.

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

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Alexandra Winter 2020-09-10 19:23:50 +02:00 • committed by David S. Miller

parent 817741a8ea

commit 780b6e7db2

1 changed files with 22 additions and 1 deletions

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drivers/s390/net/qeth_l2_main.c

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