基于Offload和FPGA的网络传输设计与实现  

Design and Implementation of Network Transmission Based on Offload and FPGA

作　　者：薛镭 贺亚龙[1] XUE Lei;HE Yalong(No.715 Research Institute,CSIC,Hangzhou 310023,Zhejiang,China)

机构地区：[1]中国船舶重工集团公司第七一五研究所,杭州310023

出　　处：《机电设备》2018年第4期54-57,65,共5页Mechanical and Electrical Equipment

摘　　要：offload主要指将原本在软件协议栈中进行的IP分片、TCP分段、重组、checksum检验等操作转移到网卡硬件中进行,以降低系统CPU负荷、提高处理性能。文章提出了基于offload的机制,用FPGA实现网卡功能以高速传输网络数据,并通过FPGA编码在网络数据中加入时间戳用于流量控制。Offload mainly refers to transferring IP fragmentation, TCP segmentation, reorganization, checksum test etc., which are originally carried out in the software protocol stack, to the network card hardware to reduce system CPU load and improve processing performance. An offload-based mechanism is proposed which uses FPGA to implement network card functions to transmit network data at high speed. At the same time, time stamp is added to network data to control traffic control through FPGA coding.

关 键 词：FPGA offload TCP/IP协议栈 流量控制 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]