sample packet filter code

[Allen Curtis]

Hello,

I am working on an embedded system and would like to implement a  
PF_PACKET/SOCK_RAW with packet filtering. The objective is to create a  
filter based on a family of destination MAC addresses. Can anyone  
provide sample code which does this without the aid of the PCAP  
library? A previous posting suggested looking at tcpdump for an  
example of BPF but the current version seems to be PCAP based.

Documentation or a pointer to source code to explain linux/filters.h  
filter operations may be enough to get me over the hump.

TIA

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