Writing a VFS plugin for network-packet access

Despite Genode already providing a socket API that is backed by two different Virtual File System (VFS) plugins, we have no mechanism for sending/receiving raw Ethernet frames via the libc yet. In Linux and FreeBSD, the kernel provides virtual TAP devices as an interface for this purpose. We can easily emulate this interface by implementing a new VFS plugin. In this article, I will share my experiences with this particular plugin and provide some insights in the internals of the VFS. Continue...