#ifndef _NET_PSNAP_H#define _NET_PSNAP_H extern struct datalink_proto *register_snap_client(const unsigned char *desc,		     int (*rcvfunc)(struct sk_buff *, struct net_device *,				    struct packet_type *,				    struct net_device *orig_dev));extern void unregister_snap_client(struct datalink_proto *proto); #endif