From b4d72c08b358fc5b259fad0f4971112d949efd1c Mon Sep 17 00:00:00 2001 From: Eugene Crosser Date: Tue, 14 Jan 2014 15:54:11 +0100 Subject: 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 Signed-off-by: Frank Blaschka Reviewed-by: Ursula Braun Signed-off-by: David S. Miller --- Documentation/s390/qeth.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Documentation/s390/qeth.txt (limited to 'Documentation/s390') diff --git a/Documentation/s390/qeth.txt b/Documentation/s390/qeth.txt new file mode 100644 index 000000000000..c08c305efd4d --- /dev/null +++ b/Documentation/s390/qeth.txt @@ -0,0 +1,21 @@ +IBM s390 QDIO Ethernet Driver + +HiperSockets Bridge Port Support + +Uevents + +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. -- cgit v1.2.3