Network interface device that fast-path processes solicited...

Details Network interface device that fast-path processes solicited... Network interface device that fast-path processes solicited...

2006-10-16

2010-02-16

Gilles, Jude J Jean (Department: 2443)

Electrical computers and digital processing systems: multicomput

Network-to-computer interfacing

C709S230000, C709S204000, C709S245000, C709S231000, C709S228000, C711S154000, C711S220000, C370S463000

Reexamination Certificate

active

07664883

ABSTRACT:
A network interface device connected to a host provides hardware and processing mechanisms for accelerating data transfers between the host and a network. Some data transfers are processed using a dedicated fast-path whereby the protocol stack of the host performs no network layer or transport layer processing. Other data transfers are, however, handled in a slow-path by the host protocol stack. In one embodiment, the host protocol stack has an ISCSI layer, but a response to a solicited ISCSI read request command is nevertheless processed by the network interface device in fast-path. In another embodiment, an initial portion of a response to a solicited command is handled using the dedicated fast-path and then after an error condition occurs a subsequent portion of the response is handled using the slow-path. The interface device uses a command status message to communicate status to the host.

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