Electrical computers and digital processing systems: multicomput – Network-to-computer interfacing
Patent
1997-05-08
2000-06-27
Dinh, Dung C.
Electrical computers and digital processing systems: multicomput
Network-to-computer interfacing
709 5, 709321, 710 52, 710 56, G06F 1300, G06F 1338
Patent
active
060818468
ABSTRACT:
A method and computer program product that overcomes the problem of intrasystem copying of data from one data structure to another while processing incoming packets of network data coming into the system off a communications network in an environment having an integrating component in between the network card device driver and the transport protocol driver that assigns system memory for packets to the respective drivers. The integrating component temporarily transfers ownership of the original data structure from the network card device driver to the transport protocol driver based on indication from the network card device driver, independent determination that the network card device driver can afford to temporarily release ownership, and determination of the transport protocol driver's ability to take ownership. The transport protocol driver will indicate receipt of ownership of the data structure and later explicitly release it. The transport protocol driver may then operate on the data structure after the initial invocation session has ended when it initially received ownership until it is released at a later time to thus prevent copying of the data and thereby increase system efficiency. Temporary transfer of ownership according to the present invention is especially important when the network card device driver fills data structure with network data during interrupt processing that causes a scenario where the transport protocol driver is not able to fully process the network data in the initial invocation session without copying the data.
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Brandon Kyle
Gamache Rod
Hyder Jameel
Srinivas Nk
Dinh Dung C.
Microsoft Corporation
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