aarp.h

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/*
 * Copyright (c) 1990,1991 Regents of The University of Michigan.
 * All Rights Reserved.
 *
 * This structure is used for both phase 1 and 2. Under phase 1
 * the net is not filled in. It is in phase 2. In both cases, the
 * hardware address length is (for some unknown reason) 4. If
 * anyone at Apple could program their way out of paper bag, it
 * would be 1 and 3 respectively for phase 1 and 2.
 */
 
#ifndef _AARP_H
#define _AARP_H 1
 
union aapa {
    unsigned char       ap_pa[4];
    struct ap_node {
        unsigned char       an_zero;
        unsigned char       an_net[2];
        unsigned char       an_node;
    } ap_node;
};
 
struct ether_aarp {
    struct arphdr   eaa_hdr;
    unsigned char       aarp_sha[6];
    union aapa      aarp_spu;
    unsigned char       aarp_tha[6];
    union aapa      aarp_tpu;
};
#define aarp_hrd    eaa_hdr.ar_hrd
#define aarp_pro    eaa_hdr.ar_pro
#define aarp_hln    eaa_hdr.ar_hln
#define aarp_pln    eaa_hdr.ar_pln
#define aarp_op     eaa_hdr.ar_op
#define aarp_spa    aarp_spu.ap_node.an_node
#define aarp_tpa    aarp_tpu.ap_node.an_node
#define aarp_spnet  aarp_spu.ap_node.an_net
#define aarp_tpnet  aarp_tpu.ap_node.an_net
#define aarp_spnode aarp_spu.ap_node.an_node
#define aarp_tpnode aarp_tpu.ap_node.an_node
 
struct aarptab {
    struct at_addr  aat_ataddr;
    unsigned char       aat_enaddr[6];
    unsigned char       aat_timer;
    unsigned char       aat_flags;
    struct mbuf     *aat_hold;
};
 
#define AARPHRD_ETHER   0x0001
 
#define AARPOP_REQUEST  0x01
#define AARPOP_RESPONSE 0x02
#define AARPOP_PROBE    0x03
 
#ifdef KERNEL
struct aarptab      *aarptnew();
int         aarpprobe();
#endif /* KERNEL */
 
#endif /* _AARP_H */