[unix-history] / sys / netinet / if_ether.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)if_ether.h	7.5 (Berkeley) 6/28/90
 *	$Id: if_ether.h,v 1.3 1993/11/07 17:47:47 wollman Exp $
 */

#ifndef _NETINET_IF_ETHER_H_
#define _NETINET_IF_ETHER_H_ 1

/*
 * Structure of a 10Mb/s Ethernet header.
 */
struct	ether_header {
	u_char	ether_dhost[6];
	u_char	ether_shost[6];
	u_short	ether_type;
};

#define	ETHERTYPE_PUP	0x0200		/* PUP protocol */
#define	ETHERTYPE_IP	0x0800		/* IP protocol */
#define ETHERTYPE_ARP	0x0806		/* Addr. resolution protocol */

/*
 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
 * by an ETHER type (as given above) and then the (variable-length) header.
 */
#define	ETHERTYPE_TRAIL		0x1000		/* Trailer packet */
#define	ETHERTYPE_NTRAILER	16

#define	ETHERMTU	1500
#define	ETHERMIN	(60-14)

/*
 * Ethernet Address Resolution Protocol.
 *
 * See RFC 826 for protocol description.  Structure below is adapted
 * to resolving internet addresses.  Field names used correspond to 
 * RFC 826.
 */
struct	ether_arp {
	struct	arphdr ea_hdr;	/* fixed-size header */
	u_char	arp_sha[6];	/* sender hardware address */
	u_char	arp_spa[4];	/* sender protocol address */
	u_char	arp_tha[6];	/* target hardware address */
	u_char	arp_tpa[4];	/* target protocol address */
};
#define	arp_hrd	ea_hdr.ar_hrd
#define	arp_pro	ea_hdr.ar_pro
#define	arp_hln	ea_hdr.ar_hln
#define	arp_pln	ea_hdr.ar_pln
#define	arp_op	ea_hdr.ar_op


/*
 * Structure shared between the ethernet driver modules and
 * the address resolution code.  For example, each ec_softc or il_softc
 * begins with this structure.
 */
struct	arpcom {
	struct 	ifnet ac_if;		/* network-visible interface */
	u_char	ac_enaddr[6];		/* ethernet hardware address */
	struct in_addr ac_ipaddr;	/* copy of ip address- XXX */
};

/*
 * Internet to ethernet address resolution table.
 */
struct	arptab {
	struct	in_addr at_iaddr;	/* internet address */
	u_char	at_enaddr[6];		/* ethernet address */
	u_char	at_timer;		/* minutes since last reference */
	u_char	at_flags;		/* flags */
	struct	mbuf *at_hold;		/* last packet until resolved/timeout */
};

#ifdef	KERNEL
extern u_char	etherbroadcastaddr[6]; /* defined in net/if_ethersubr.c */
struct	arptab *arptnew();

extern void ether_input(struct ifnet *, struct ether_header *, struct mbuf *);
extern char *ether_sprintf(u_char *);

#endif
#endif /* _NETINET_IF_ETHER_H_ */
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
38e82238	33	* from: @(#)if_ether.h 7.5 (Berkeley) 6/28/90
4c45483e	34	* $Id: if_ether.h,v 1.3 1993/11/07 17:47:47 wollman Exp $
15637ed4 RG	35	*/
15637ed4 RG	36
8ace4366 GW	37	#ifndef _NETINET_IF_ETHER_H_
	38	#define _NETINET_IF_ETHER_H_ 1
	39
15637ed4 RG	40	/*
	41	* Structure of a 10Mb/s Ethernet header.
	42	*/
	43	struct ether_header {
	44	u_char ether_dhost[6];
	45	u_char ether_shost[6];
	46	u_short ether_type;
	47	};
	48
	49	#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
	50	#define ETHERTYPE_IP 0x0800 /* IP protocol */
	51	#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
	52
	53	/*
	54	* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
	55	* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
	56	* by an ETHER type (as given above) and then the (variable-length) header.
	57	*/
	58	#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
	59	#define ETHERTYPE_NTRAILER 16
	60
	61	#define ETHERMTU 1500
	62	#define ETHERMIN (60-14)
	63
	64	/*
	65	* Ethernet Address Resolution Protocol.
	66	*
	67	* See RFC 826 for protocol description. Structure below is adapted
	68	* to resolving internet addresses. Field names used correspond to
	69	* RFC 826.
	70	*/
	71	struct ether_arp {
	72	struct arphdr ea_hdr; /* fixed-size header */
	73	u_char arp_sha[6]; /* sender hardware address */
	74	u_char arp_spa[4]; /* sender protocol address */
	75	u_char arp_tha[6]; /* target hardware address */
	76	u_char arp_tpa[4]; /* target protocol address */
	77	};
	78	#define arp_hrd ea_hdr.ar_hrd
	79	#define arp_pro ea_hdr.ar_pro
	80	#define arp_hln ea_hdr.ar_hln
	81	#define arp_pln ea_hdr.ar_pln
	82	#define arp_op ea_hdr.ar_op
	83
	84
	85	/*
	86	* Structure shared between the ethernet driver modules and
	87	* the address resolution code. For example, each ec_softc or il_softc
	88	* begins with this structure.
	89	*/
	90	struct arpcom {
	91	struct ifnet ac_if; /* network-visible interface */
	92	u_char ac_enaddr[6]; /* ethernet hardware address */
	93	struct in_addr ac_ipaddr; /* copy of ip address- XXX */
	94	};
	95
	96	/*
	97	* Internet to ethernet address resolution table.
	98	*/
	99	struct arptab {
	100	struct in_addr at_iaddr; /* internet address */
	101	u_char at_enaddr[6]; /* ethernet address */
	102	u_char at_timer; /* minutes since last reference */
	103	u_char at_flags; /* flags */
104	struct mbuf at_hold; / last packet until resolved/timeout */
105	};
106
107	#ifdef KERNEL
8ace4366	108	extern u_char etherbroadcastaddr[6]; /* defined in net/if_ethersubr.c */
15637ed4	109	struct arptab *arptnew();
4c45483e GW	110
	111	extern void ether_input(struct ifnet , struct ether_header , struct mbuf *);
	112	extern char ether_sprintf(u_char );
	113
15637ed4	114	#endif
8ace4366	115	#endif /* _NETINET_IF_ETHER_H_ */