[unix-history] / usr / src / sys / vax / if / if_en.h

/*	if_en.h	4.3	81/12/03	*/

/*
 * Structure of a Ethernet header.
 */
struct	en_header {
	u_char	en_shost;
	u_char	en_dhost;
	u_short	en_type;
};

#define	ENPUP_PUPTYPE	0x0400		/* PUP protocol */
#define	ENPUP_IPTYPE	0x0800		/* IP protocol */

/*
 * The ENPUP_NTRAILER packet types starting at ENPUP_TRAIL have
 * (type-ENPUP_TRAIL)*512 bytes of data followed
 * by a PUP type (as given above) and then the (variable-length) header.
 */
#define	ENPUP_TRAIL	0x1000		/* Trailer PUP */
#define	ENPUP_NTRAILER	16
Commit	Line	Data
b454c3ea	1	/* if_en.h 4.3 81/12/03 */
ce9ee601 BJ	2
	3	/*
	4	* Structure of a Ethernet header.
	5	*/
	6	struct en_header {
	7	u_char en_shost;
	8	u_char en_dhost;
	9	u_short en_type;
	10	};
	11
405c9168	12	#define ENPUP_PUPTYPE 0x0400 /* PUP protocol */
ce9ee601	13	#define ENPUP_IPTYPE 0x0800 /* IP protocol */
405c9168	14
b454c3ea	15	/*
ce9ee601 BJ	16	* The ENPUP_NTRAILER packet types starting at ENPUP_TRAIL have
ce9ee601 BJ	17	* (type-ENPUP_TRAIL)*512 bytes of data followed
405c9168	18	* by a PUP type (as given above) and then the (variable-length) header.
ce9ee601 BJ	19	*/
	20	#define ENPUP_TRAIL 0x1000 /* Trailer PUP */
	21	#define ENPUP_NTRAILER 16