at.h

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/*
 * Copyright (c) 1990,1991 Regents of The University of Michigan.
 *
 * All Rights Reserved.  See COPYRIGHT.
 */
 
#ifndef __AT_HEADER__
#define __AT_HEADER__
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
 
#ifndef NO_DDP
 
#if defined(__linux__) /* pull in the linux header */
#include <sys/socket.h>
#include <asm/types.h>
#include <linux/atalk.h>
 
#ifdef HAVE_ATALK_ADDR
#define at_addr atalk_addr
#define netrange atalk_netrange
#endif /* HAVE_ATALK_ADDR */
 
#else /* __linux__ */
 
#include <sys/types.h>
#include <netinet/in.h> /* so that we can deal with sun's s_net #define */
 
/*
 * Supported protocols
 */
#ifdef ATPROTO_DDP
#undef ATPROTO_DDP
#endif /* ATPROTO_DDP */
#define ATPROTO_DDP 0
#define ATPROTO_AARP    254
 
/*
 * Ethernet types, for DIX.
 * These should really be in some global header file, but we can't
 * count on them being there, and it's annoying to patch system files.
 */
#ifndef ETHERTYPE_AT
#define ETHERTYPE_AT    0x809B      /* AppleTalk protocol */
#endif
#ifndef ETHERTYPE_AARP
#define ETHERTYPE_AARP  0x80F3      /* AppleTalk ARP */
#endif
 
#define DDP_MAXSZ   587
 
/*
 * If ATPORT_FIRST <= Port < ATPORT_RESERVED,
 * Port was created by a privileged process.
 * If ATPORT_RESERVED <= Port < ATPORT_LAST,
 * Port was not necessarily created by a
 * privileged process.
 */
#define ATPORT_FIRST    1
#define ATPORT_RESERVED 128
#define ATPORT_LAST 254 /* 254 is reserved on ether/tokentalk networks */
 
/*
 * AppleTalk address.
 */
struct at_addr {
#ifdef s_net
#undef s_net
#endif /* s_net */
    unsigned short  s_net;
    unsigned char   s_node;
};
 
#define ATADDR_ANYNET   (unsigned short)0x0000
#define ATADDR_ANYNODE  (unsigned char)0x00
#define ATADDR_ANYPORT  (unsigned char)0x00
#define ATADDR_BCAST    (unsigned char)0xff     /* There is no BCAST for NET */
 
/*
 * Socket address, AppleTalk style.  We keep magic information in the
 * zero bytes.  There are three types, NONE, CONFIG which has the phase
 * and a net range, and IFACE which has the network address of an
 * interface.  IFACE may be filled in by the client, and is filled in
 * by the kernel.
 */
struct sockaddr_at {
#ifdef BSD4_4
    unsigned char       sat_len;
    unsigned char       sat_family;
#else /* BSD4_4 */
    short       sat_family;
#endif /* BSD4_4 */
    unsigned char       sat_port;
    struct at_addr   sat_addr;
#ifdef notdef
    struct {
        unsigned char       sh_type;
# define SATHINT_NONE   0
# define SATHINT_CONFIG 1
# define SATHINT_IFACE  2
        union {
            /* XXX check size */
            char        su_zero[7];
            struct {
                unsigned char       sr_phase;
                unsigned short      sr_firstnet, sr_lastnet;
            } su_range;
            unsigned short      su_interface;
        } sh_un;
    } sat_hints;
#else /* notdef */
    char        sat_zero[8];
#endif /* notdef */
};
 
struct netrange {
    unsigned char       nr_phase;
    unsigned short      nr_firstnet;
    unsigned short      nr_lastnet;
};
 
#ifdef KERNEL
extern struct domain    atalkdomain;
extern struct protosw   atalksw[];
#endif /* KERNEL */
 
#endif /* __linux__ */
#endif /* NO_DDP */
#endif /* __AT_HEADER__ */