/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
/* Copyright (c) 1990 Mentat Inc. */

#ifndef _INET_ARP_H
#define _INET_ARP_H

#include <sys/types.h>

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Warning: the interfaces described in this file are private to the
 * implementation.  They may change at any time without notice and are not
 * documented.  Do not depend on them.
 */

#define ARP_REQUEST     1
#define ARP_RESPONSE    2
#define RARP_REQUEST    3
#define RARP_RESPONSE   4

/* Both ace_flags; must also modify arp.c in mdb */
#define ACE_F_PERMANENT         0x0001
#define ACE_F_PUBLISH           0x0002
#define ACE_F_DYING             0x0004
#define ACE_F_RESOLVED          0x0008
/* Using bit mask extraction from target address */
#define ACE_F_MAPPING           0x0010
#define ACE_F_MYADDR            0x0020  /* IP claims to own this address */
#define ACE_F_UNVERIFIED        0x0040  /* DAD not yet complete */
#define ACE_F_AUTHORITY         0x0080  /* check for duplicate MACs */
#define ACE_F_DEFEND            0x0100  /* single transmit (area_flags only) */
#define ACE_F_OLD               0x0200  /* should revalidate when IP asks */
#define ACE_F_FAST              0x0400  /* fast probe enabled */
#define ACE_F_DELAYED           0x0800  /* rescheduled on arp_defend_rate */
#define ACE_F_DAD_ABORTED       0x1000  /* DAD was aborted on link down */

/* Client Notification Codes */
#define AR_CN_BOGON     1
#define AR_CN_ANNOUNCE  2
#define AR_CN_READY     3               /* DAD complete; address usable */
#define AR_CN_FAILED    4               /* DAD failed; address unusable */

/* ARP Header */
typedef struct arh_s {
        uchar_t arh_hardware[2];
        uchar_t arh_proto[2];
        uchar_t arh_hlen;
        uchar_t arh_plen;
        uchar_t arh_operation[2];
        /* The sender and target hw/proto pairs follow */
} arh_t;

#ifdef  __cplusplus
}
#endif

#endif  /* _INET_ARP_H */