We need to understand how the hardware works along with its driver. a. What is the interface between the driver of a network adaptor and the controller of the network adaptor? b. How does the driver ask the controller to send a packet and how does the controller report it has completed the job? c. How does the controller report to the driver when a packet has arrived at the network adaptor? 20 .我们需要了解硬件是如何与驱动程序一同工作的。 a. 网络适配器的驱动程序与网络适配器控制器之间的接口是什么? b. 驱动程序是如何要求控制器发送一个数据包,控制器如何报告它已经完成工作? c. 当一个数据包到达网络适配器时,控制器如何将它报告给驱动程序?