1/*	$OpenBSD: net.h,v 1.11 2020/05/18 17:01:02 patrick Exp $	*/
2/*	$NetBSD: net.h,v 1.10 1995/10/20 00:46:30 cgd Exp $	*/
3
4/*
5 * Copyright (c) 1993 Adam Glass
6 * Copyright (c) 1992 Regents of the University of California.
7 * All rights reserved.
8 *
9 * This software was developed by the Computer Systems Engineering group
10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
11 * contributed to Berkeley.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgement:
23 *	This product includes software developed by the University of
24 *	California, Lawrence Berkeley Laboratory and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 */
41
42#ifndef _KERNEL	/* XXX - see <netinet/in.h> */
43#undef __IPADDR
44#define __IPADDR(x)	htonl((u_int32_t)(x))
45#endif
46
47#include "iodesc.h"
48
49#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
50
51/* Returns true if u_int32_t's on the same net */
52#define	SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
53
54#define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
55
56#define MAXTMO 20	/* seconds */
57#define MINTMO 2	/* seconds */
58
59#define FNAME_SIZE 128
60#define	IFNAME_SIZE 16
61#define RECV_SIZE 1536	/* XXX delete this */
62
63/*
64 * How much room to leave for headers:
65 *  14: struct ether_header
66 *  20: struct ip
67 *   8: struct udphdr
68 * That's 42 but let's pad it out to 48 bytes.
69 */
70#define ETHER_SIZE 14
71struct packet_header {
72	/* guarantee int alignment */
73	int	pad[48 / sizeof(int)];
74};
75
76extern	u_char bcea[6];
77extern	char rootpath[FNAME_SIZE];
78extern	char bootfile[FNAME_SIZE];
79extern	char hostname[FNAME_SIZE];
80extern	int hostnamelen;
81extern	char domainname[FNAME_SIZE];
82extern	int domainnamelen;
83extern	char ifname[IFNAME_SIZE];
84
85/* All of these are in network order. */
86extern	struct in_addr myip;
87extern	struct in_addr rootip;
88extern	struct in_addr swapip;
89extern	struct in_addr gateip;
90extern	struct in_addr nameip;
91extern	u_int32_t netmask;
92
93extern	int debug;			/* defined in the machdep sources */
94
95extern struct iodesc sockets[SOPEN_MAX];
96
97/* ARP/RevARP functions: */
98u_char	*arpwhohas(struct iodesc *, struct in_addr);
99void	arp_reply(struct iodesc *, void *);
100int	rarp_getipaddress(int);
101u_int32_t	ip_convertaddr(const char *);
102
103/* Link functions: */
104ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
105	    u_char *dea, int etype);
106ssize_t readether(struct iodesc *d, void *pkt, size_t len,
107	    time_t tleft, u_int16_t *etype);
108
109ssize_t	sendudp(struct iodesc *, void *, size_t);
110ssize_t	readudp(struct iodesc *, void *, size_t, time_t);
111ssize_t	sendrecv(struct iodesc *,
112	    ssize_t (*)(struct iodesc *, void *, size_t), void *, size_t,
113	    ssize_t (*)(struct iodesc *, void *, size_t, time_t),
114	    void *, size_t);
115
116/* Utilities: */
117const char *ether_sprintf(const u_char *);
118u_int16_t in_cksum(const void *, size_t);
119const char *inet_ntoa(struct in_addr);
120const char *intoa(u_int32_t);		/* similar to inet_ntoa */
121u_int32_t inet_addr(const char *);
122
123/* Machine-dependent functions: */
124time_t	getsecs(void);
125