Network device driver for RTL8139C

The normal file operations (read, write, and so on) do not make sense when applied to network interfaces, so it is not possible to apply the UNIX “everything is a file” approach to them. Thus, network interfaces exist in their own namespace and export a different set of operations. With the widely application of network in Linux platform, In this paper, the design of network device driver for RTL8139C controller with implementing all four transmission register to maximize packet transmission speed also capable to detect physical trip on Linux operating system. Focused on discussing implementation principle of Linux network drivers and detailed to analysis of the frame structure of the program code.