TRANSPORT CONTROL CHANNEL PROGRAM MESSAGE PAIRING
First Claim
1. A computer program product for processing a chained-pair linked transport control channel program at a control unit configured for communication with an input/output (I/O) subsystem in an I/O processing system, the computer program product comprising:
- a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising;
receiving a first command message at the control unit from the I/O subsystem, the first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program;
receiving a second command message at the control unit from the I/O subsystem chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list;
extracting the DCW list from the data message in response to receiving the data message; and
executing the DCW list.
1 Assignment
0 Petitions
Accused Products
Abstract
A method, apparatus, and computer program product for processing a chained-pair linked transport control channel program in an I/O processing system is provided. The method includes receiving a first command message at a control unit specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program. The method further includes receiving a second command message chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list. The method additionally includes extracting the DCW list from the data message in response to receiving the data message, and executing the DCW list.
132 Citations
25 Claims
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1. A computer program product for processing a chained-pair linked transport control channel program at a control unit configured for communication with an input/output (I/O) subsystem in an I/O processing system, the computer program product comprising:
a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising; receiving a first command message at the control unit from the I/O subsystem, the first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program; receiving a second command message at the control unit from the I/O subsystem chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list; extracting the DCW list from the data message in response to receiving the data message; and executing the DCW list. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for processing a chained-pair linked transport control channel program at a control unit in an I/O processing system, the apparatus comprising:
a control unit configured for communication with an I/O subsystem of the I/O processing system, the control unit performing a method comprising; receiving a first command message from the I/O subsystem, the first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program; receiving a second command message from the I/O subsystem chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list; extracting the DCW list from the data message in response to receiving the data message; and executing the DCW list. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for processing a chained-pair linked transport control channel program at a control unit configured for communication with an input/output (I/O) subsystem in an I/O processing system, the method comprising:
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receiving a first command message at the control unit from the I/O subsystem, the first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program; receiving a second command message at the control unit from the I/O subsystem chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list; extracting the DCW list from the data message in response to receiving the data message; and executing the DCW list. - View Dependent Claims (18, 19)
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20. A computer program product for processing a chained-pair linked transport control channel program at a channel subsystem configured for communication with a control unit in an I/O processing system, the computer program product comprising:
a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising; configuring a first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program; configuring a second command message chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list; transmitting the first and second command messages from the channel subsystem to the control unit; and transmitting the DCW list from the channel subsystem to the control unit in the data message. - View Dependent Claims (21, 22, 23, 24)
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25. An apparatus for processing a chained-pair linked transport control channel program at a channel subsystem configured for communication with a control unit in an I/O processing system, the apparatus comprising:
a channel subsystem configured for communication with a control unit of the I/O processing system, the channel subsystem performing a method comprising; configuring a first command message specifying that a device command word (DCW) list is encoded in a data message associated with the first command message as part of the chained-pair linked transport control channel program; configuring a second command message chained-pair linked to the first command message, the second command message specifying data attributes associated with the DCW list; transmitting the first and second command messages from the channel subsystem to the control unit; and transmitting the DCW list from the channel subsystem to the control unit in the data message.
Specification