#ifndef _X25DEVICE_H#define _X25DEVICE_H #include <linux/if_ether.h>#include <linux/if_packet.h>#include <linux/if_x25.h>#include <linux/skbuff.h> static inline __be16 x25_type_trans(struct sk_buff *skb, struct net_device *dev){	skb->dev = dev;	skb_reset_mac_header(skb);	skb->pkt_type = PACKET_HOST;		return htons(ETH_P_X25);}#endif