root/include/net/psnap.h

#ifndef _NET_PSNAP_H
#define _NET_PSNAP_H

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));
void unregister_snap_client(struct datalink_proto *proto);

#endif