Information needed about bridge c code

Hello,
i need to write a little personal patch in the bridge code. For this patch, i need to know the original src and dst mac addresses of the packet incoming to the bridge. As i work on a brouter (some packets are bridged, some are routed based on ebtable rules), packets that are routed have their mac addresses modified by the IP stack).

I put a software probe in br_input.c::br_handle_frame( ), but there, the dst mac address is already replaced by the bridge local mac address.
My question is: where must i put the probe to get the original src and dst mac addresses? At the driver level? In the bridge, but where?

Thx in advance.
PS: please CC to louis.croisezATgmail.com, because i am receiving the digest once per day.

At start of br_handle_frame, dst mac address in skb is as received on wire. Call sequence is:

netif_receive_skb
handle_bridge
br_handle_frame

The skb on the pre-routing chain is actually after brouting but before going through bridge forwarding.

Stephen Hemminger <[email protected]>
OSDL http://developer.osdl.org/~shemminger