extern int llc_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev);
extern int llc_mac_hdr_init(struct sk_buff *skb,
extern int llc_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev);
extern int llc_mac_hdr_init(struct sk_buff *skb,