TITLE

Implementation of a Software-Based TCP/IP Offload Engine Using Standalone TCP/IP without an Embedded OS

AUTHOR(S)
IN-SU YOON; SANG-HWA CHUNG; YOON-GEUN KWON
PUB. DATE
November 2011
SOURCE
Journal of Information Science & Engineering;Nov2011, Vol. 27 Issue 6, p1871
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A number of TCP/IP offload engines have been developed to reduce the CPU load of processing TCP/IP, but most of them are implemented in hardware. Although hardware-based TOEs have a high performance, they lack the flexibility to accept changes in the TCP/IP. To preserve flexibility, we implemented a software-based TOE, called HL-TCP 100134 (High-performance Lightweight TCP/IP). The HL-TCP is a standalone TCP/IP without an embedded OS. The TOE using the HL-TCP has features of a zero-copy sending mechanism and an efficient DMA mechanism for TCP retransmission. It also fully utilizes offload features in the Ethernet. Our experimental results show that the TOE using the HL-TCP can achieve a bandwidth of 453 Mbps with almost zero CPU utilization, compared with a general gigabit Ethernet, which has a CPU utilization of approximately 23%.
ACCESSION #
67184473

 

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