Fibre channel input/output data routing including discarding of data transfer requests in response to error detection
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United States of America Patent
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Apr 28, 2015
Grant Date -
Dec 6, 2012
app pub date -
Jun 1, 2011
filing date -
Jun 1, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A computer program product is provided for performing input/output (I/O) processing. The computer program product is configured to perform: generating and storing in local channel memory at least one address control word (ACW) specifying one or more host memory locations for data transfer and including a data discard field; generating an address control structure specifying a local channel memory location of a corresponding ACW; receiving one or more data transfer requests from a network interface that each corresponding address control structure information; accessing an ACW and routing the data transfer request to a host memory location specified in the ACW; and responsive to encountering an error during at least one of the accessing and the routing, discarding the one or more data transfer requests and setting the data discard field to a value configured to instruct a channel to discard any subsequent data transfer requests associated with the ACW.
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