VxWorks下UDP过载断流问题的改进  

Improvement of UDP overload cutoff in VxWorks

作　　者：吕晨[1] 李健[1] 张激[1] 黄远[1] 

机构地区：[1]中国电子科技集团公司第三十二研究所,上海200233

出　　处：《信息技术》2016年第8期167-170,174,共5页Information Technology

摘　　要：网卡驱动和网络协议栈是Vx Works嵌入式操作系统的重要组成部分,文中首先介绍VxWorks6.9的体系结构和SENS协议栈的架构;然后描述UDP包在网卡驱动和协议栈中的接收过程并对过载断流问题的原因进行阐述。针对m Blk资源耗尽问题提出解决方案并给出修改原因。最后对修改后的网卡驱动和协议栈进行测试,同时与修改前的数据进行对比。通过数据对比可以发现改进后的系统已解决了UDP过载断流的问题。Network card driver and network protocol stack is an important part of Vx Works embedded operating system. Firstly,the paper introduces the architecture of Vx Works6. 9 and the architecture of SENS protocol stack,then describes the process of receiving the UDP packet in the network card driver and protocol stack,elaborates the reason of overload cutoff. To solve the problem of m Blk resource depletion,it proposes some solutions and gives out the reasons for the modification. Finally,it tests the modified network card driver and protocol stack,and compares with the modified data. It finds that the improved system has solved the problem of UDP overload cutoff problem.

关 键 词：VXWORKS 网卡驱动 协议栈 UDP接收 过载断流 m Blk 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构]