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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 /* Copyright (c) 1990 Mentat Inc. */
     26 
     27 #ifndef	_INET_ARP_H
     28 #define	_INET_ARP_H
     29 
     30 #include <sys/types.h>
     31 
     32 #ifdef	__cplusplus
     33 extern "C" {
     34 #endif
     35 
     36 /*
     37  * Warning: the interfaces described in this file are private to the
     38  * implementation.  They may change at any time without notice and are not
     39  * documented.  Do not depend on them.
     40  */
     41 
     42 #define	ARP_REQUEST	1
     43 #define	ARP_RESPONSE	2
     44 #define	RARP_REQUEST	3
     45 #define	RARP_RESPONSE	4
     46 
     47 /* Both ace_flags; must also modify arp.c in mdb */
     48 #define	ACE_F_PERMANENT		0x0001
     49 #define	ACE_F_PUBLISH		0x0002
     50 #define	ACE_F_DYING		0x0004
     51 #define	ACE_F_RESOLVED		0x0008
     52 /* Using bit mask extraction from target address */
     53 #define	ACE_F_MAPPING		0x0010
     54 #define	ACE_F_MYADDR		0x0020	/* IP claims to own this address */
     55 #define	ACE_F_UNVERIFIED	0x0040	/* DAD not yet complete */
     56 #define	ACE_F_AUTHORITY		0x0080	/* check for duplicate MACs */
     57 #define	ACE_F_DEFEND		0x0100	/* single transmit (area_flags only) */
     58 #define	ACE_F_OLD		0x0200	/* should revalidate when IP asks */
     59 #define	ACE_F_FAST		0x0400	/* fast probe enabled */
     60 #define	ACE_F_DELAYED		0x0800	/* rescheduled on arp_defend_rate */
     61 #define	ACE_F_DAD_ABORTED	0x1000	/* DAD was aborted on link down */
     62 
     63 /* Client Notification Codes */
     64 #define	AR_CN_BOGON	1
     65 #define	AR_CN_ANNOUNCE	2
     66 #define	AR_CN_READY	3		/* DAD complete; address usable */
     67 #define	AR_CN_FAILED	4		/* DAD failed; address unusable */
     68 
     69 /* ARP Header */
     70 typedef struct arh_s {
     71 	uchar_t	arh_hardware[2];
     72 	uchar_t	arh_proto[2];
     73 	uchar_t	arh_hlen;
     74 	uchar_t	arh_plen;
     75 	uchar_t	arh_operation[2];
     76 	/* The sender and target hw/proto pairs follow */
     77 } arh_t;
     78 
     79 #ifdef	__cplusplus
     80 }
     81 #endif
     82 
     83 #endif	/* _INET_ARP_H */
     84