bootp.h revision 38451 
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
23
24struct bootp {
25	unsigned char	bp_op;		/* packet opcode type */
26	unsigned char	bp_htype;	/* hardware addr type */
27	unsigned char	bp_hlen;	/* hardware addr length */
28	unsigned char	bp_hops;	/* gateway hops */
29	unsigned int	bp_xid;		/* transaction ID */
30	unsigned short	bp_secs;	/* seconds since boot began */
31	unsigned short	bp_flags;
32	struct in_addr	bp_ciaddr;	/* client IP address */
33	struct in_addr	bp_yiaddr;	/* 'your' IP address */
34	struct in_addr	bp_siaddr;	/* server IP address */
35	struct in_addr	bp_giaddr;	/* gateway IP address */
36	unsigned char	bp_chaddr[16];	/* client hardware address */
37	unsigned char	bp_sname[64];	/* server host name */
38	unsigned char	bp_file[128];	/* boot file name */
39#ifdef SUPPORT_DHCP
40#define BOOTP_VENDSIZE 312
41#else
42#define BOOTP_VENDSIZE 64
43#endif
44	unsigned char	bp_vend[BOOTP_VENDSIZE];	/* vendor-specific area */
45};
46
47/*
48 * UDP port numbers, server and client.
49 */
50#define	IPPORT_BOOTPS		67
51#define	IPPORT_BOOTPC		68
52
53#define BOOTREPLY		2
54#define BOOTREQUEST		1
55
56
57/*
58 * Vendor magic cookie (v_magic) for CMU
59 */
60#define VM_CMU		"CMU"
61
62/*
63 * Vendor magic cookie (v_magic) for RFC1048
64 */
65#define VM_RFC1048	{ 99, 130, 83, 99 }
66
67
68
69/*
70 * RFC1048 tag values used to specify what information is being supplied in
71 * the vendor field of the packet.
72 */
73
74#define TAG_PAD			((unsigned char)   0)
75#define TAG_SUBNET_MASK		((unsigned char)   1)
76#define TAG_TIME_OFFSET		((unsigned char)   2)
77#define TAG_GATEWAY		((unsigned char)   3)
78#define TAG_TIME_SERVER		((unsigned char)   4)
79#define TAG_NAME_SERVER		((unsigned char)   5)
80#define TAG_DOMAIN_SERVER	((unsigned char)   6)
81#define TAG_LOG_SERVER		((unsigned char)   7)
82#define TAG_COOKIE_SERVER	((unsigned char)   8)
83#define TAG_LPR_SERVER		((unsigned char)   9)
84#define TAG_IMPRESS_SERVER	((unsigned char)  10)
85#define TAG_RLP_SERVER		((unsigned char)  11)
86#define TAG_HOSTNAME		((unsigned char)  12)
87#define TAG_BOOTSIZE		((unsigned char)  13)
88#define TAG_DUMPFILE		((unsigned char)  14)
89#define TAG_DOMAINNAME		((unsigned char)  15)
90#define TAG_SWAPSERVER		((unsigned char)  16)
91#define TAG_ROOTPATH		((unsigned char)  17)
92
93#ifdef SUPPORT_DHCP
94#define TAG_REQ_ADDR		((unsigned char)  50)
95#define TAG_LEASETIME		((unsigned char)  51)
96#define TAG_OVERLOAD		((unsigned char)  52)
97#define TAG_DHCP_MSGTYPE	((unsigned char)  53)
98#define TAG_SERVERID		((unsigned char)  54)
99#define TAG_PARAM_REQ		((unsigned char)  55)
100#define TAG_MSG			((unsigned char)  56)
101#define TAG_MAXSIZE		((unsigned char)  57)
102#define TAG_T1			((unsigned char)  58)
103#define TAG_T2			((unsigned char)  59)
104#define TAG_CLASSID		((unsigned char)  60)
105#define TAG_CLIENTID		((unsigned char)  61)
106#endif
107
108#define TAG_END			((unsigned char) 255)
109
110#ifdef SUPPORT_DHCP
111#define DHCPDISCOVER 1
112#define DHCPOFFER 2
113#define DHCPREQUEST 3
114#define DHCPDECLINE 4
115#define DHCPACK 5
116#define DHCPNAK 6
117#define DHCPRELEASE 7
118#endif
119
120/*
121 * "vendor" data permitted for CMU bootp clients.
122 */
123
124struct cmu_vend {
125	unsigned char	v_magic[4];	/* magic number */
126	unsigned int	v_flags;	/* flags/opcodes, etc. */
127	struct in_addr	v_smask;	/* Subnet mask */
128	struct in_addr	v_dgate;	/* Default gateway */
129	struct in_addr	v_dns1, v_dns2; /* Domain name servers */
130	struct in_addr	v_ins1, v_ins2; /* IEN-116 name servers */
131	struct in_addr	v_ts1, v_ts2;	/* Time servers */
132	unsigned char	v_unused[25];	/* currently unused */
133};
134
135
136/* v_flags values */
137#define VF_SMASK	1	/* Subnet mask field contains valid data */
138