dev_add_pack() + marked packets

Hi,
 
I don't have the code to reference infront of me right now, but I will 
try to be as clear as I can :)
 
I have a protocol handler registered with dev_add_pack().  I have looked 
through the ebtables source to find out how it marks packets.  I have 
mimicked what ebtables does:  set skb->nfmark = 1; skb->nfcache |= 
NFC_ALTERED; from within my protocol handler.
 
By this point, I would have figured the packet is properly marked... but 
it is not.  What am I missing? I can do other things like twiddle the 
mac address so I'm pretty sure I don't have a 'copy' of the skb, I have 
the real thing.
 
I then set up ebtables like: ebtables -A FORWARD --mark 1 -j DROP ==> 
just to test to see if our marked packets leave the box.  But the 
problem is, the 'nfmark' has been reset back to ZERO and the filter 
never matches.  (I put some printk's in the ebtables match function)
 
I really have no clue why this is the case.  I am hoping someone can 
assist me in figuring this out.  Any thoughts?
 
Thanks a lot for any help!
 
-Rob

P.S.  If I'm unclear about something, I will fix :)



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click