1/*	$NetBSD: net.h,v 1.10 1995/10/20 00:46:30 cgd Exp $	*/
2
3/*
4 * Copyright (c) 1993 Adam Glass
5 * Copyright (c) 1992 Regents of the University of California.
6 * All rights reserved.
7 *
8 * This software was developed by the Computer Systems Engineering group
9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10 * contributed to Berkeley.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD$
37 */
38
39#ifndef _KERNEL	/* XXX - see <netinet/in.h> */
40#undef __IPADDR
41#define __IPADDR(x)	htonl((u_int32_t)(x))
42#endif
43
44#include "iodesc.h"
45
46#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
47
48/* Returns true if n_long's on the same net */
49#define	SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
50
51#define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
52
53#define MAXTMO 120	/* seconds */
54#define MINTMO 2	/* seconds */
55
56#define FNAME_SIZE 128
57#define	IFNAME_SIZE 16
58#define RECV_SIZE 1536	/* XXX delete this */
59
60/*
61 * How much room to leave for headers:
62 *  14: struct ether_header
63 *  20: struct ip
64 *   8: struct udphdr
65 * That's 42 but let's pad it out to 48 bytes.
66 */
67#define ETHER_SIZE 14
68#define	HEADER_SIZE 48
69
70extern	u_char bcea[6];
71extern	char rootpath[FNAME_SIZE];
72extern	char bootfile[FNAME_SIZE];
73extern	char hostname[FNAME_SIZE];
74extern	int hostnamelen;
75extern	char domainname[FNAME_SIZE];
76extern	int domainnamelen;
77extern	char ifname[IFNAME_SIZE];
78
79/* All of these are in network order. */
80extern	struct in_addr myip;
81extern	struct in_addr rootip;
82extern	struct in_addr swapip;
83extern	struct in_addr gateip;
84extern	struct in_addr nameip;
85extern	n_long netmask;
86
87extern	int debug;			/* defined in the machdep sources */
88
89extern struct iodesc sockets[SOPEN_MAX];
90
91/* ARP/RevARP functions: */
92u_char	*arpwhohas(struct iodesc *, struct in_addr);
93void	arp_reply(struct iodesc *, void *);
94int	rarp_getipaddress(int);
95
96/* Link functions: */
97ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
98			u_char *dea, int etype);
99ssize_t readether(struct iodesc *d, void *pkt, size_t len,
100			time_t tleft, u_int16_t *etype);
101
102ssize_t	sendudp(struct iodesc *, void *, size_t);
103ssize_t	readudp(struct iodesc *, void *, size_t, time_t);
104ssize_t	sendrecv(struct iodesc *,
105		      ssize_t (*)(struct iodesc *, void *, size_t),
106			void *, size_t,
107		        ssize_t (*)(struct iodesc *, void *, size_t, time_t),
108			void *, size_t);
109
110/* bootp/DHCP */
111void	bootp(int, int);
112
113/* Utilities: */
114char	*ether_sprintf(u_char *);
115int	in_cksum(void *, int);
116char	*inet_ntoa(struct in_addr);
117char	*intoa(n_long);		/* similar to inet_ntoa */
118n_long	inet_addr(char *);
119
120/* Machine-dependent functions: */
121time_t	getsecs(void);
122