xref: /src/sys/netinet/if_inarp.h

/*	$NetBSD: if_inarp.h,v 1.25.2.1 1997/02/07 18:08:59 is Exp $	*/

/*
 * Copyright (c) 1982, 1986, 1993
 *	The 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.
 *
 *	@(#)if_ether.h	8.1 (Berkeley) 6/10/93
 */

/*
 * 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_int8_t arp_sha[ETHER_ADDR_LEN];	/* sender hardware address */
	u_int8_t arp_spa[4];			/* sender protocol address */
	u_int8_t arp_tha[ETHER_ADDR_LEN];	/* target hardware address */
	u_int8_t 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

struct llinfo_arp {
	LIST_ENTRY(llinfo_arp) la_list;
	struct	rtentry *la_rt;
	struct	mbuf *la_hold;		/* last packet until resolved/timeout */
	long	la_asked;		/* last time we QUERIED for this addr */
#define la_timer la_rt->rt_rmx.rmx_expire /* deletion time in seconds */
};

struct sockaddr_inarp {
	u_int8_t  sin_len;
	u_int8_t  sin_family;
	u_int16_t sin_port;
	struct	  in_addr sin_addr;
	struct	  in_addr sin_srcaddr;
	u_int16_t sin_tos;
	u_int16_t sin_other;
#define SIN_PROXY 1
};

/*
 * IP and ethernet specific routing flags
 */
#define	RTF_USETRAILERS	RTF_PROTO1	/* use trailers */
#define	RTF_ANNOUNCE	RTF_PROTO2	/* announce new arp entry */

#ifdef	_KERNEL
struct	ifqueue arpintrq;

void	arpwhohas __P((struct ifnet *, struct in_addr *));
void	arpintr __P((void));
int	arpresolve __P((struct ifnet *,
	    struct rtentry *, struct mbuf *, struct sockaddr *, u_char *));
void	arp_ifinit __P((struct ifnet *, struct ifaddr *));
void	arp_rtrequest __P((int, struct rtentry *, struct sockaddr *));

#endif /* _KERNEL */

#ifdef _KERNEL
void arp_rtrequest __P((int, struct rtentry *, struct sockaddr *));
int arpresolve __P((struct ifnet *, struct rtentry *, struct mbuf *,
		    struct sockaddr *, u_char *));
void arpintr __P((void));
int arpioctl __P((u_long, caddr_t));
void arp_ifinit __P((struct ifnet *, struct ifaddr *));
void revarpinput __P((struct mbuf *));
void in_revarpinput __P((struct mbuf *));
void revarprequest __P((struct ifnet *));
int revarpwhoarewe __P((struct ifnet *, struct in_addr *, struct in_addr *));
int revarpwhoami __P((struct in_addr *, struct ifnet *));
int db_show_arptab __P((void));
#endif