unicast, multicast, broadcast packet

Question

I am developing a NDIS driver. NDIS sends packet to miniport. How will I know that the packet comes from NDIS is unicast, multicast or broadcast packet.How to find out a packet is unicast, multicast or broadcast..

Answer 1

If you are writing an Ethernet driver (or at least, your media is similar to IEEE 802's MAC) you can use the ETH_IS_BROADCAST and ETH_IS_MULTICAST macros from ndis.h. Anything not broadcast or multicast is unicast.

For a code sample, see NICGetFrameTypeFromDestination from the netvmini sample.