#ifndef _NET_STP_H
  #define _NET_STP_H
  
  struct stp_proto {
  	unsigned char	group_address[ETH_ALEN];
  	void		(*rcv)(const struct stp_proto *, struct sk_buff *,
  			       struct net_device *);
  	void		*data;
  };
  
  int stp_proto_register(const struct stp_proto *proto);
  void stp_proto_unregister(const struct stp_proto *proto);
  
  #endif /* _NET_STP_H */