Method and system for transmission control protocol (TCP) retransmit processing
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United States of America Patent
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-
Mar 31, 2009
Grant Date -
Jun 23, 2005
app pub date -
Nov 30, 2004
filing date -
Dec 19, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Certain aspects of the present invention for transmission control protocol (TCP) retransmission processing may comprise receiving a request for packet retransmission to be processed by an offload network interface card (NIC). A remote peer, a retransmission timer, or a fast retransmission signal may initiate the request. The NIC processes the request information and sends notification to the host of the request. The host searches the TCP buffers of the TCP transmission window in host memory for the packet. Once the packet is located, the host may send the offload NIC the buffer descriptors containing data that locates the packet in host memory. The offload NIC may retrieve the packet from host memory and may retransmit the packet according to the request information. The offload NIC may send notification to the host that the packet has been retransmitted.
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