First hints for developing

Hi all.

I'm interested on developing a modules to do some stuff at MAC layer and I 
think the best option is ebtables. I've been reading and there seems to be 
quite similar to Netfilter modules, but I still have some doubts.

I have seen that there are some hooks NF_BR_XXX_YYYY. In netfilter there 
are the same. What I want to achieve is to develop a module that once it 
traverse a hook, the register function is executed.
In netfilter is done like :

struct nf_hook_ops hook_ex;

   hook_ex.list.next = NULL;
   hook_ex.list.prev = NULL;
   hook_ex.hook = function_hook;
   hook_ex.pf = PF_INET;
   hook_ex.hooknum = NF_IP_LOCAL_OUT;

   return nf_register_hook(&hook_ex);


How is the same achieved in ebtables? is something with struct ebt_match? 
Could you give me a simple example code that just printk some message when 
a packet traverse the NF_BR_PRE_ROUTING for example

TA.



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