Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-08-15
2006-08-15
Shah, Chirag (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S423000, C710S052000
Reexamination Certificate
active
07092401
ABSTRACT:
An apparatus and method for managing reliable datagram work queues, and associated completion queues, using head and tail pointers with end-to-end context error cache are provided. Reliable datagram (RD) queue head and tail pointers are maintained in the channel interface and the host channel adapter. The head and tail pointers in the host channel adapter include a RD queue page table index and a RD queue page index for identifying a position within the RD queue. For RD work queues, in the channel interface, the tail pointer is used to identify a next position where a work queue entry may be written and the head pointer is used only to determine whether the work queue is full. In the host channel adapter, the head pointer is used to identify a next work queue entry for processing and the tail pointer is used to determine if the queue is empty.
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patent: 6725296 (2004-04-01), Craddock et al.
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Craddock David F.
Gregg Thomas Anthony
Judd Ian David
Pfister Gregory Francis
Recio Renato John
Kinslow Cathrine K.
Salys Cosimer K.
Shah Chirag
Yee Duke W.
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