Oracle International Corporation

General Instrument Corporation

Frederick Luther Gotwald

Brian Manula

Haakon Ording Bugge

A method for managing a queue descriptor cache of a host channel adaptor (HCA) includes obtaining a queue descriptor from memory. The queue descriptor includes data describing a queue and the memory is located in a host system. The method further includes storing a copy of the queue descriptor in the queue descriptor cache of the HCA. The HCA accesses the copy of the queue descriptor to obtain the plurality of data, accesses the queue using the data, and updates the data to reflect the access to the queue. The method further includes calculating, using the data, a value corresponding to utilization of the queue, comparing the value against a threshold, fetching, if the value exceeds the threshold, a new copy of the queue descriptor from memory, and replacing the copy of the queue descriptor in the queue descriptor cache with the new copy obtained from the memory.

Method and system for queue descriptor cache management for a host channel adapter

Computer data provided according to a first data protocol, such as the Internet protocol, is communicated over a digital television broadcast network using a second data protocol such as MPEG2. The computer data in the first data protocol is encapsulated in at least one data stream for distribution in conformance with the second data protocol. The at least one data stream encapsulating the computer data is multiplexed with a plurality of data streams conforming to the second data protocol for transmission over the network, which may be a cable or satellite television network. The data stream encapsulating the computer data is received from the network according to the second data protocol, and processed in accordance with the second data protocol to recover the computer data in the first data protocol. A prioritization scheme is provided wherein different messages in the first data protocol are prioritized in the output multiplex according to at least one of source address, destination address, data type and connection type.

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San Diego, CA, United States of America

Frederick Luther Gotwald