Intel 82575/82576千兆网卡驱动IGB分析──7──NAPI的实现

tubocurarine

    From the device driver perspective, there are only two differences between NAPI
and non-NAPI. The first is that NAPI drivers must provide a poll
method, described in the section "net_device fields used by NAPI." The
second difference is the function called to schedule a frame: non-NAPI drivers
call netif_rx, whereas NAPI drivers call _ _netif_rx_schedule,
defined in include/linux/netdevice.h. (The kernel provides a wrapper
function named netif_rx_schedule, which checks to make sure that the
device is running and that the softirq is not already scheduled, and then it
calls _ _netif_rx_schedule. These checks are done with
netif_rx_schedule_prep. Some drivers call netif_rx_schedule,
and others call netif_rx_schedule_prep explicitly and then _
_netif_rx_schedule if needed).
                               
               
               
               
               
               
               

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u1/46672/showart_1859823.html

dsdashi

你好，我也正在看INTEL82576的LINUX下的驱动，想请您把82576网卡工作的机制给我发一个，我看了他的英文手册半天也没太明白，然后又看了它的代码，其中对于接收队列的管理一直没看明白，希望您能帮帮忙，谢谢