Introduction - If you have any usage issues, please Google them yourself
1) Sample implementation of NDIS LWF filter.c inspectNetBuffer function for determinging the 802.1p tag value on received packets.
2) Full LWF source code, instructions for building with WDK, and x86 Vista/Server 2008 binaries of filter driver and user-mode EXE that calls into filter driver for inspecting received packets.