Stateless Fibre Channel Sequence Acceleration for Fibre Channel Traffic Over Ethernet

摘要

A method for offloading Fibre Channel transmit data in an I/O operation. The transmit data includes Fibre Channel sequences, each Fibre Channel sequence includes multiple frames. The method includes generating a single transmit sequence request descriptor for transmitting all of the plurality of frames; creating an Ethernet header, a FCoE encapsulation header, and a Fibre Channel header for each frame in response to information in the transmit sequence request descriptor; creating start of frame and end of frame delimiters; inserting data into each frame; computing Fibre Channel CRC and Ethernet FCS for each frame; and transmitting the plurality of frames over a network. In each of the plurality of frames, the Ethernet header precedes the FCoE encapsulation header, which precedes the Fibre Channel header, which precedes the data The data is followed by the Fibre Channel CRC, which is followed by the Ethernet FCS.