Apparatus and method for supporting memory management in an offload of network protocol processing
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United States of America Patent
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Apr 19, 2011
Grant Date -
Jan 19, 2006
app pub date -
Jul 14, 2004
filing date -
Jul 14, 2004
priority date (Note) -
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Abstract
A number of improvements in network adapters that offload protocol processing from the host processor are provided. Specifically, mechanisms for handling memory management and optimization within a system utilizing an offload network adapter are provided. The memory management mechanism permits both buffered sending and receiving of data as well as zero-copy sending and receiving of data. In addition, the memory management mechanism permits grouping of DMA buffers that can be shared among specified connections based on any number of attributes. The memory management mechanism further permits partial send and receive buffer operation, delaying of DMA requests so that they may be communicated to the host system in bulk, and expedited transfer of data to the host system.
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