#ifndef _NET_INET_DATALINK_H_#define _NET_INET_DATALINK_H_ struct datalink_proto {        unsigned char   type[8]; 	struct llc_sap   *sap;         unsigned short  header_length;         int     (*rcvfunc)(struct sk_buff *, struct net_device *,                                struct packet_type *, struct net_device *);	int     (*request)(struct datalink_proto *, struct sk_buff *,                                        unsigned char *);	struct list_head node;}; #endif