1/*	$NetBSD: bootp.h,v 1.4 1997/09/06 13:55:57 drochner Exp $	*/
2
3/*
4 * Bootstrap Protocol (BOOTP).  RFC951 and RFC1048.
5 *
6 * This file specifies the "implementation-independent" BOOTP protocol
7 * information which is common to both client and server.
8 *
9 * Copyright 1988 by Carnegie Mellon.
10 *
11 * Permission to use, copy, modify, and distribute this program for any
12 * purpose and without fee is hereby granted, provided that this copyright
13 * and permission notice appear on all copies and supporting documentation,
14 * the name of Carnegie Mellon not be used in advertising or publicity
15 * pertaining to distribution of the program without specific prior
16 * permission, and notice be given in supporting documentation that copying
17 * and distribution is by permission of Carnegie Mellon and Stanford
18 * University.  Carnegie Mellon makes no representations about the
19 * suitability of this software for any purpose.  It is provided "as is"
20 * without express or implied warranty.
21 *
22 * $FreeBSD: stable/11/stand/libsa/bootp.h 344408 2019-02-21 02:43:48Z kevans $
23 */
24
25#ifndef _BOOTP_H_
26#define _BOOTP_H_
27
28struct bootp {
29	unsigned char	bp_op;		/* packet opcode type */
30	unsigned char	bp_htype;	/* hardware addr type */
31	unsigned char	bp_hlen;	/* hardware addr length */
32	unsigned char	bp_hops;	/* gateway hops */
33	unsigned int	bp_xid;		/* transaction ID */
34	unsigned short	bp_secs;	/* seconds since boot began */
35	unsigned short	bp_flags;
36	struct in_addr	bp_ciaddr;	/* client IP address */
37	struct in_addr	bp_yiaddr;	/* 'your' IP address */
38	struct in_addr	bp_siaddr;	/* server IP address */
39	struct in_addr	bp_giaddr;	/* gateway IP address */
40	unsigned char	bp_chaddr[16];	/* client hardware address */
41	unsigned char	bp_sname[64];	/* server host name */
42	char		bp_file[128];	/* boot file name */
43#ifdef SUPPORT_DHCP
44#define BOOTP_VENDSIZE 312
45#else
46#define BOOTP_VENDSIZE 64
47#endif
48	unsigned char	bp_vend[BOOTP_VENDSIZE];	/* vendor-specific area */
49};
50
51/*
52 * UDP port numbers, server and client.
53 */
54#define	IPPORT_BOOTPS		67
55#define	IPPORT_BOOTPC		68
56
57#define BOOTREPLY		2
58#define BOOTREQUEST		1
59
60
61/*
62 * Vendor magic cookie (v_magic) for CMU
63 */
64#define VM_CMU		"CMU"
65
66/*
67 * Vendor magic cookie (v_magic) for RFC1048
68 */
69#define VM_RFC1048	{ 99, 130, 83, 99 }
70
71
72
73/*
74 * RFC1048 tag values used to specify what information is being supplied in
75 * the vendor field of the packet.
76 */
77
78#define TAG_PAD			((unsigned char)   0)
79#define TAG_SUBNET_MASK		((unsigned char)   1)
80#define TAG_TIME_OFFSET		((unsigned char)   2)
81#define TAG_GATEWAY		((unsigned char)   3)
82#define TAG_TIME_SERVER		((unsigned char)   4)
83#define TAG_NAME_SERVER		((unsigned char)   5)
84#define TAG_DOMAIN_SERVER	((unsigned char)   6)
85#define TAG_LOG_SERVER		((unsigned char)   7)
86#define TAG_COOKIE_SERVER	((unsigned char)   8)
87#define TAG_LPR_SERVER		((unsigned char)   9)
88#define TAG_IMPRESS_SERVER	((unsigned char)  10)
89#define TAG_RLP_SERVER		((unsigned char)  11)
90#define TAG_HOSTNAME		((unsigned char)  12)
91#define TAG_BOOTSIZE		((unsigned char)  13)
92#define TAG_DUMPFILE		((unsigned char)  14)
93#define TAG_DOMAINNAME		((unsigned char)  15)
94#define TAG_SWAPSERVER		((unsigned char)  16)
95#define TAG_ROOTPATH		((unsigned char)  17)
96#define TAG_INTF_MTU		((unsigned char)  26)
97
98#ifdef SUPPORT_DHCP
99#define TAG_REQ_ADDR		((unsigned char)  50)
100#define TAG_LEASETIME		((unsigned char)  51)
101#define TAG_OVERLOAD		((unsigned char)  52)
102#define TAG_DHCP_MSGTYPE	((unsigned char)  53)
103#define TAG_SERVERID		((unsigned char)  54)
104#define TAG_PARAM_REQ		((unsigned char)  55)
105#define TAG_MSG			((unsigned char)  56)
106#define TAG_MAXSIZE		((unsigned char)  57)
107#define TAG_T1			((unsigned char)  58)
108#define TAG_T2			((unsigned char)  59)
109#define TAG_CLASSID		((unsigned char)  60)
110#define TAG_CLIENTID		((unsigned char)  61)
111#define TAG_USER_CLASS		((unsigned char)  77)
112#endif
113
114#define TAG_END			((unsigned char) 255)
115
116#ifdef SUPPORT_DHCP
117#define DHCPDISCOVER 1
118#define DHCPOFFER 2
119#define DHCPREQUEST 3
120#define DHCPDECLINE 4
121#define DHCPACK 5
122#define DHCPNAK 6
123#define DHCPRELEASE 7
124#endif
125
126/*
127 * "vendor" data permitted for CMU bootp clients.
128 */
129
130struct cmu_vend {
131	unsigned char	v_magic[4];	/* magic number */
132	unsigned int	v_flags;	/* flags/opcodes, etc. */
133	struct in_addr	v_smask;	/* Subnet mask */
134	struct in_addr	v_dgate;	/* Default gateway */
135	struct in_addr	v_dns1, v_dns2; /* Domain name servers */
136	struct in_addr	v_ins1, v_ins2; /* IEN-116 name servers */
137	struct in_addr	v_ts1, v_ts2;	/* Time servers */
138	unsigned char	v_unused[25];	/* currently unused */
139};
140
141
142/* v_flags values */
143#define VF_SMASK	1	/* Subnet mask field contains valid data */
144
145/* cached bootp response/dhcp ack */
146extern struct bootp *bootp_response;
147extern size_t bootp_response_size;
148
149#endif /* _BOOTP_H_ */
150