如网线链接断开的时候,会将LinkSts清位;重新链接网线,则硬件自动将此位置位。这样,在网卡驱动中读写该位信息就可一判断网络是否链接通路。 网卡驱动程序通过netif_carrier_on/netif_carrier_off/netif_carrier_ok来和内核网络子系统传递信息。 1】netif_carrier_on【作用】告诉内核子系统网络链接完整。 2】netif_car...
How to Select the Dryer Heat Carrier 2012-09-07 14:38 −Dryer (dryer) machine is a kind of commonly used drying apparatus whose operation is simple, the process amount is large. the decision of the heat car... kara liu 0 155