Implementation of Non-interrupt Communication on Intelligent Network Adapters
Ninghui Sun · Jisuanji gongcheng · 2005
It is of great importance to reduce the host CPU overhead in high-speed and massive data flow application environment.This paper describes a new communication method,which is interrupt-free,between intelligent peripherals and the host,aiming to the high-speed and heavy-load working condition.Implementation of this communication method is based on an intelligent Ethernet adapter with a local processor on board.Detailed discussion is mainly upon address acquiring,buffer accessing and control-messages operating.A performance comparison is also performed between the intelligent NIC using non-interrupt communication and an ordinary Ethernet NIC using original interrupt-driven communication,on Ethernet packets receiving.