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Apparatus and method for in-line insertion and removal of markers

  • US 8,699,521 B2
  • Filed: 01/07/2011
  • Issued: 04/15/2014
  • Est. Priority Date: 01/19/2006
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an adapter to be communicatively coupled to a host interface via an interface of the adapter, the adapter also including at least one network port to be communicatively coupled to a network and to receive one or more frames from the network;

    the adapter including an engine and adapter memory, the adapter to selectively permit data transfer between the at least one port, the engine, and adapter memory, the engine being able to perform processing related to protocol offload and checksum calculation based upon a received transport protocol control (TCP) segment from the one or more frames, the adapter being able to determine whether the TCP segment belongs to an accelerated connection, the adapter also being able to perform one or more additional CRC offload-related operations based upon whether the TCP segment includes certain upper level internet small computer system interface (iSCSI) protocol header information and belongs to the accelerated connection, the one or more additional CRC offload-related operations being related to offloading CRC checking of the certain upper level iSCSI protocol header information and also being in addition to an offloaded TCP CRC validation.

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