#ifndef __ETH_H#define __ETH_H/* *	IEEE 802.3 Ethernet magic constants.  The frame sizes omit the preamble *	and FCS/CRC (frame check sequence).  */#define ETH_ALEN	6		/* Octets in one ethernet addr	 */#define ETH_HLEN	14		/* Total octets in header.	 */#define ETH_ZLEN	60		/* Min. octets in frame sans FCS */#define ETH_DATA_LEN	1500		/* Max. octets in payload	 */#define ETH_FRAME_LEN	1514		/* Max. octets in frame sans FCS *//* *	These are the defined Ethernet Protocol ID's. */#define ETH_P_LOOP	0x0060		/* Ethernet Loopback packet	*/#define ETH_P_ECHO	0x0200		/* Ethernet Echo packet		*/#define ETH_P_PUP	0x0400		/* Xerox PUP packet		*/#define ETH_P_IP	0x0800		/* Internet Protocol packet	*/#define ETH_P_X25	0x0805		/* CCITT X.25			*/#define ETH_P_ARP	0x0806		/* Address Resolution packet	*/#define	ETH_P_BPQ	0x08FF		/* G8BPQ AX.25 Ethernet Packet	[ NOT AN OFFICIALLY REGISTERED ID ] */#define ETH_P_DEC       0x6000          /* DEC Assigned proto           */#define ETH_P_DNA_DL    0x6001          /* DEC DNA Dump/Load            */#define ETH_P_DNA_RC    0x6002          /* DEC DNA Remote Console       */#define ETH_P_DNA_RT    0x6003          /* DEC DNA Routing              */#define ETH_P_LAT       0x6004          /* DEC LAT                      */#define ETH_P_DIAG      0x6005          /* DEC Diagnostics              */#define ETH_P_CUST      0x6006          /* DEC Customer use             */#define ETH_P_SCA       0x6007          /* DEC Systems Comms Arch       */#define ETH_P_RARP      0x8035		/* Reverse Addr Res packet	*/#define ETH_P_ATALK	0x809B		/* Appletalk DDP		*/#define ETH_P_AARP	0x80F3		/* Appletalk AARP		*/#define ETH_P_IPX	0x8137		/* IPX over DIX			*/#define ETH_P_IPV6	0x86DD		/* IPv6 over bluebook		*//* *	This is an Ethernet frame header. */ __packed struct ethhdr{	unsigned char	h_dest[ETH_ALEN];	/* destination eth addr	*/	unsigned char	h_source[ETH_ALEN];	/* source ether addr	*/	unsigned short	h_proto;		/* packet type ID field	*/};struct sk_buff;int eth_init(void);int eth_send(struct sk_buff *skb, unsigned char *dest_addr, unsigned short proto);int eth_rcv(struct sk_buff *skb);int eth_get_addr(unsigned char *addr);void eth_skb_reserve(struct sk_buff *skb);#endif /* __ETH_H */