path: root/Documentation/s390
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authorEugene Crosser <Eugene.Crosser@ru.ibm.com>2014-01-14 15:54:11 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-15 14:48:01 -0800
commitb4d72c08b358fc5b259fad0f4971112d949efd1c (patch)
treef2bcd879d3957e353e3c7d61a91b5d1a594d7db8 /Documentation/s390
parent3977458c9c61fc27a5a88cfcf51696b838d1ecc9 (diff)
qeth: bridgeport support - basic control
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 <eugene.crosser@ru.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/s390')
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/s390/qeth.txt b/Documentation/s390/qeth.txt
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+++ b/Documentation/s390/qeth.txt
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+IBM s390 QDIO Ethernet Driver
+HiperSockets Bridge Port Support
+To generate the events the device must be assigned a role of either
+a primary or a secondary Bridge Port. For more information, see
+"z/VM Connectivity, SC24-6174".
+When run on HiperSockets Bridge Capable Port hardware, and the state
+of some configured Bridge Port device on the channel changes, a udev
+event with ACTION=CHANGE is emitted on behalf of the corresponding
+ccwgroup device. The event has the following attributes:
+BRIDGEPORT=statechange - indicates that the Bridge Port device changed
+ its state.
+ROLE={primary|secondary|none} - the role assigned to the port.
+STATE={active|standby|inactive} - the newly assumed state of the port.

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