/*      $NetBSD: net.h,v 1.10 1995/10/20 00:46:30 cgd Exp $     */

/*
 * Copyright (c) 1993 Adam Glass 
 * Copyright (c) 1992 Regents of the University of California.
 * All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _STAND_NET_H
#define _STAND_NET_H
#ifndef _KERNEL /* XXX - see <netinet/in.h> */
#undef __IPADDR
#define __IPADDR(x)     htonl((uint32_t)(x))
#endif

#include "iodesc.h"

#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }

enum net_proto {
        NET_NONE,
        NET_NFS,
        NET_TFTP
};

/* Returns true if n_long's on the same net */
#define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))

#define MACPY(s, d) bcopy((char *)s, (char *)d, 6)

#define MAXTMO 120      /* seconds */
#define MINTMO 2        /* seconds */

#define FNAME_SIZE 128
#define IFNAME_SIZE 16
#define RECV_SIZE 1536  /* XXX delete this */

/*
 * How much room to leave for headers:
 *  14: struct ether_header
 *  20: struct ip
 *   8: struct udphdr
 * That's 42 but let's pad it out to 48 bytes.
 */
#define ETHER_SIZE 14
#define HEADER_SIZE 48

extern  u_char bcea[6];
extern  char rootpath[FNAME_SIZE];
extern  int rootport;
extern  char bootfile[FNAME_SIZE];
extern  char hostname[FNAME_SIZE];
extern  int hostnamelen;
extern  char domainname[FNAME_SIZE];
extern  int domainnamelen;
extern  int netproto;
extern  char ifname[IFNAME_SIZE];

/* All of these are in network order. */
extern  struct in_addr myip;
extern  struct in_addr rootip;
extern  struct in_addr swapip;
extern  struct in_addr gateip;
extern  struct in_addr nameip;
extern  struct in_addr servip;
extern  n_long netmask;
extern  u_int intf_mtu;

extern  int debug;                      /* defined in the machdep sources */

/* ARP/RevARP functions: */
u_char  *arpwhohas(struct iodesc *, struct in_addr);
void    arp_reply(struct iodesc *, void *);
int     rarp_getipaddress(int);

/* Link functions: */
ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
                        u_char *dea, int etype);
ssize_t readether(struct iodesc *, void **, void **, time_t, uint16_t *);

ssize_t sendip(struct iodesc *, void *, size_t, uint8_t);
ssize_t readip(struct iodesc *, void **, void **, time_t, uint8_t);
ssize_t sendudp(struct iodesc *, void *, size_t);
ssize_t readudp(struct iodesc *, void **, void **, time_t);
ssize_t sendrecv(struct iodesc *,
                        ssize_t (*)(struct iodesc *, void *, size_t),
                        void *, size_t,
                        ssize_t (*)(struct iodesc *, void **, void **, time_t,
                            void *),
                        void **, void **, void *);

/* bootp/DHCP */
void    bootp(int);

/* Utilities: */
char    *ether_sprintf(u_char *);
int     in_cksum(void *, int);
char    *inet_ntoa(struct in_addr);
char    *intoa(n_long);         /* similar to inet_ntoa */
n_long  inet_addr(char *);

#endif /* ! _STAND_NET_H */