一种新的高速报文解析结构研究  

A New High-speed Packet Parsing Architecture

作　　者：董永吉[1] 郭云飞[1,2] 黄万伟[1] 夏军波 

机构地区：[1]国家数字交换系统工程技术研究中心,郑州450002 [2]解放军理工大学,南京210007 [3]解放军防空兵学院,郑州450052

出　　处：《电子与信息学报》2013年第5期1083-1089,共7页Journal of Electronics & Information Technology

基　　金：国家973计划项目(2012CB315901);国家863计划项目(2011AA01A103);国家科技支撑计划(2011BAH19B01)资助课题

摘　　要：随着新协议的不断涌现和网络速率的迅猛增长,报文解析结构在解析灵活度和解析速率上面临挑战。该文结合流水线设计和二叉trie树查表思想,提出一种应用于路由转发的报文协议解析结构(Parsing PipelineArchitecture for Forwarding,PPAF),通过构建协议二叉trie树来支持报文协议解析的灵活度,利用硬件多级流水查表提升报文协议解析处理速率,采用节点映射算法解决协议二叉trie树节点到流水线映射过程中存储资源不均衡的问题。基于NetFPGA平台的仿真结果表明,相对于现有的高速解析结构,PPAF在处理速率和资源占用上取得较好的均衡的同时,能够提供基于接口的独立灵活解析能力。With the increasing number of new protocols and the rapid growth of the network link rate,the packet parsing architecture has been greatly challenged on its flexibility and rate.While combining the idea of pipeline design and binary-trie,a new parsing architecture is proposed in this paper,namely Parsing Pipeline Architecture for Forwarding（PPAF）.It flexibly analysis packet protocol by constructing Forwarding Protocol-trie,improved the processing rate by employing hardware pipeline look-up table,and solved the unbalance of node mapping storage resource by using the node to pipeline mapping algorithm.The simulation results through the NetFPGA platform suggest that PPAF is superior than the extant high speed parsing architecture in two ways： PPAF achieves ambidexterity in processing speed and resource consumption;and it can provide independent interface-based flexible protocol parsing capabilities.

关 键 词：信息处理 报文解析 二叉trie树 网络虚拟化 NETFPGA 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]