linux-toradex.git/drivers/s390/net/qeth_l2_sys.c, branch v4.3

qeth: BRIDGEPORT "sanity check"

2015-05-18T16:14:17+00:00

Forbid enabling IFF_PROMISC reflection to BRIDGEPORT when a role
is already assigned, and forbid direct manipulation of the role
when reflection mode is engaged.

Reviewed-by: Thomas Richter 
Signed-off-by: Eugene Crosser 
Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

qeth: IFF_PROMISC flag to BRIDGE PORT mode

2015-05-18T16:14:17+00:00

OSA and HiperSocket devices do not support promiscuous mode proper,
but they support "BRIDGE PORT" mode that is functionally similar.
This update introduces sysfs attribute that, when set, makes the driver
try to "reflect" setting and resetting of the IFF_PROMISC flag on the
interface into setting and resetting PRIMARY or SECONDARY bridge port
role on the underlying OSA or HiperSocket device.

Reviewed-by: Thomas Richter 
Signed-off-by: Eugene Crosser 
Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

qeth: remove locks from sysfs _show

2015-05-18T16:14:17+00:00

Locking is probably unnecessary in this case, and the rest of the
qeth sysfs code does not use locks in the *_show() functions.
Remove locks from the layer2 *_show() functions in which they where
accidentally introduced.

Signed-off-by: Eugene Crosser 
Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

qeth: don't query for info if hardware not ready.

2014-09-02T20:54:06+00:00

When qeth device is queried for ethtool data, hardware operation
is performed to extract the necessary information from the card.
If the card is not online at the moment (e.g. it is undergoing
recovery), this operation produces undesired effects like
temporarily freezing the system. This patch prevents execution
of the hardware query operation when the card is not online.
In such case, ioctl() operation returns error with errno ENODEV.

Reviewed-by: Ursula Braun 
Signed-off-by: Eugene Crosser 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

qeth: bridgeport support - address notifications

2014-01-15T22:48:01+00:00

Introduce functions to enable and disable bridgeport address
notification feature, sysfs attributes for access to these
functions from userspace, and udev events emitted when a host
joins or exits a bridgeport-enabled HiperSocket channel.

Signed-off-by: Eugene Crosser 
Signed-off-by: Frank Blaschka 
Reviewed-by: Ursula Braun 
Signed-off-by: David S. Miller

qeth: bridgeport support - basic control

2014-01-15T22:48:01+00:00

Introduce functions to assign roles and check state of bridgeport-capable
HiperSocket devices, and sysfs attributes providing access to these
functions from userspace. Introduce udev events emitted when the state
of a bridgeport device changes.

Signed-off-by: Eugene Crosser 
Signed-off-by: Frank Blaschka 
Reviewed-by: Ursula Braun 
Signed-off-by: David S. Miller