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      1 /*	$NetBSD: aarp.h,v 1.3 2011/05/08 13:51:31 bouyer Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1990,1991 Regents of The University of Michigan.
      5  * All Rights Reserved.
      6  *
      7  * Permission to use, copy, modify, and distribute this software and
      8  * its documentation for any purpose and without fee is hereby granted,
      9  * provided that the above copyright notice appears in all copies and
     10  * that both that copyright notice and this permission notice appear
     11  * in supporting documentation, and that the name of The University
     12  * of Michigan not be used in advertising or publicity pertaining to
     13  * distribution of the software without specific, written prior
     14  * permission. This software is supplied as is without expressed or
     15  * implied warranties of any kind.
     16  *
     17  * This product includes software developed by the University of
     18  * California, Berkeley and its contributors.
     19  *
     20  *	Research Systems Unix Group
     21  *	The University of Michigan
     22  *	c/o Wesley Craig
     23  *	535 W. William Street
     24  *	Ann Arbor, Michigan
     25  *	+1-313-764-2278
     26  *	netatalk (at) umich.edu
     27  */
     28 #ifndef _NETATALK_AARP_H_
     29 #define _NETATALK_AARP_H_
     30 /*
     31  * This structure is used for both phase 1 and 2. Under phase 1
     32  * the net is not filled in. It is in phase 2. In both cases, the
     33  * hardware address length is (for some unknown reason) 4. If
     34  * anyone at Apple could program their way out of paper bag, it
     35  * would be 1 and 3 respectively for phase 1 and 2.
     36  */
     37 union aapa {
     38 	u_int8_t ap_pa[4];
     39 	struct ap_node {
     40 		u_int8_t an_zero;
     41 		u_int8_t an_net[2];
     42 		u_int8_t an_node;
     43 	} ap_node;
     44 };
     45 
     46 struct ether_aarp {
     47 	struct arphdr   eaa_hdr;
     48 	u_int8_t        aarp_sha[6];
     49 	union aapa      aarp_spu;
     50 	u_int8_t        aarp_tha[6];
     51 	union aapa      aarp_tpu;
     52 };
     53 #define aarp_hrd	eaa_hdr.ar_hrd
     54 #define aarp_pro	eaa_hdr.ar_pro
     55 #define aarp_hln	eaa_hdr.ar_hln
     56 #define aarp_pln	eaa_hdr.ar_pln
     57 #define aarp_op		eaa_hdr.ar_op
     58 #define aarp_spa	aarp_spu.ap_node.an_node
     59 #define aarp_tpa	aarp_tpu.ap_node.an_node
     60 #define aarp_spnet	aarp_spu.ap_node.an_net
     61 #define aarp_tpnet	aarp_tpu.ap_node.an_net
     62 #define aarp_spnode	aarp_spu.ap_node.an_node
     63 #define aarp_tpnode	aarp_tpu.ap_node.an_node
     64 
     65 struct aarptab {
     66 	struct at_addr  aat_ataddr;
     67 	u_int8_t        aat_enaddr[6];
     68 	u_int8_t        aat_timer;
     69 	u_int8_t        aat_flags;
     70 	struct mbuf    *aat_hold;
     71 };
     72 
     73 #define AARPHRD_ETHER	0x0001
     74 
     75 #define AARPOP_REQUEST	0x01
     76 #define AARPOP_RESPONSE	0x02
     77 #define AARPOP_PROBE	0x03
     78 
     79 extern struct mowner aarp_mowner;
     80 
     81 #endif /* !_NETATALK_AARP_H_ */
     82