组播硬件过滤寄存器设置问题探讨

Research about Setting Register for Multicast Hardware Filter

实现组播技术的基础是组播硬件过滤技术,精简而高效的硬件设计将提升组播过滤的性能.该文分析了组播硬件过滤时内核哈希表与硬件寄存器数量之间的关系,运用数学方法推导出了组播地址映射到硬件寄存器的概率计算公式,为硬件设计提供了有效的参考选择.

The basic of multicast technique is the hardware filter technique of multicast. The tidy and high-powered hardware design will improve the performance when implement the multicast filtering.This article analysis the relationship between the hash table in the kernel and the hardware registers, and then infer a probability formulausing mathematical artifice, which provides effective referenced methods.