xref: /titanic_41/usr/src/uts/common/netinet/dhcp.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1996-2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*
28  * dhcp.h - Generic DHCP definitions, as per RFC's 2131 and 2132.
29  */
30 
31 #ifndef	_DHCP_H
32 #define	_DHCP_H
33 
34 #pragma ident	"%Z%%M%	%I%	%E% SMI"
35 
36 #ifdef	__cplusplus
37 extern "C" {
38 #endif
39 
40 #ifdef  _REENTRANT
41 #include <thread.h>
42 #endif  /* _REENTRANT */
43 
44 /*
45  * DHCP option codes.
46  */
47 
48 #define	CD_PAD			0
49 #define	CD_END			255
50 #define	CD_SUBNETMASK		1
51 #define	CD_TIMEOFFSET		2
52 #define	CD_ROUTER		3
53 #define	CD_TIMESERV		4
54 #define	CD_IEN116_NAME_SERV	5
55 #define	CD_DNSSERV		6
56 #define	CD_LOG_SERV		7
57 #define	CD_COOKIE_SERV		8
58 #define	CD_LPR_SERV		9
59 #define	CD_IMPRESS_SERV		10
60 #define	CD_RESOURCE_SERV	11
61 #define	CD_HOSTNAME		12
62 #define	CD_BOOT_SIZE		13
63 #define	CD_DUMP_FILE		14
64 #define	CD_DNSDOMAIN		15
65 #define	CD_SWAP_SERV		16
66 #define	CD_ROOT_PATH		17
67 #define	CD_EXTEND_PATH		18
68 
69 /* IP layer parameters */
70 #define	CD_IP_FORWARDING_ON	19
71 #define	CD_NON_LCL_ROUTE_ON	20
72 #define	CD_POLICY_FILTER	21
73 #define	CD_MAXIPSIZE		22
74 #define	CD_IPTTL		23
75 #define	CD_PATH_MTU_TIMEOUT	24
76 #define	CD_PATH_MTU_TABLE_SZ	25
77 
78 /* IP layer parameters per interface */
79 #define	CD_MTU			26
80 #define	CD_ALL_SUBNETS_LCL_ON	27
81 #define	CD_BROADCASTADDR	28
82 #define	CD_MASK_DISCVRY_ON	29
83 #define	CD_MASK_SUPPLIER_ON	30
84 #define	CD_ROUTER_DISCVRY_ON	31
85 #define	CD_ROUTER_SOLICIT_SERV	32
86 #define	CD_STATIC_ROUTE		33
87 
88 /* Link Layer Parameters per Interface */
89 #define	CD_TRAILER_ENCAPS_ON	34
90 #define	CD_ARP_TIMEOUT		35
91 #define	CD_ETHERNET_ENCAPS_ON	36
92 
93 /* TCP Parameters */
94 #define	CD_TCP_TTL		37
95 #define	CD_TCP_KALIVE_INTVL	38
96 #define	CD_TCP_KALIVE_GRBG_ON	39
97 
98 /* Application layer parameters */
99 #define	CD_NIS_DOMAIN		40
100 #define	CD_NIS_SERV		41
101 #define	CD_NTP_SERV		42
102 #define	CD_VENDOR_SPEC		43
103 
104 /* NetBIOS parameters */
105 #define	CD_NETBIOS_NAME_SERV	44
106 #define	CD_NETBIOS_DIST_SERV	45
107 #define	CD_NETBIOS_NODE_TYPE	46
108 #define	CD_NETBIOS_SCOPE	47
109 
110 /* X Window parameters */
111 #define	CD_XWIN_FONT_SERV	48
112 #define	CD_XWIN_DISP_SERV	49
113 
114 /* DHCP protocol extension options */
115 #define	CD_REQUESTED_IP_ADDR	50
116 #define	CD_LEASE_TIME		51
117 #define	CD_OPTION_OVERLOAD	52
118 #define	CD_DHCP_TYPE		53
119 #define	CD_SERVER_ID		54
120 #define	CD_REQUEST_LIST		55
121 #define	CD_MESSAGE		56
122 #define	CD_MAX_DHCP_SIZE	57
123 #define	CD_T1_TIME		58
124 #define	CD_T2_TIME		59
125 #define	CD_CLASS_ID		60
126 #define	CD_CLIENT_ID		61
127 
128 /* Netware options */
129 #define	CD_NW_IP_DOMAIN		62
130 #define	CD_NW_IP_OPTIONS	63
131 
132 /* Nisplus options */
133 #define	CD_NISPLUS_DMAIN	64
134 #define	CD_NISPLUS_SERVS	65
135 
136 /* Optional sname/bootfile options */
137 #define	CD_TFTP_SERV_NAME	66
138 #define	CD_OPT_BOOTFILE_NAME	67
139 
140 /* Additional server options */
141 #define	CD_MOBILE_IP_AGENT	68
142 #define	CD_SMTP_SERVS		69
143 #define	CD_POP3_SERVS		70
144 #define	CD_NNTP_SERVS		71
145 #define	CD_WWW_SERVS		72
146 #define	CD_FINGER_SERVS		73
147 #define	CD_IRC_SERVS		74
148 
149 /* Streettalk options */
150 #define	CD_STREETTALK_SERVS	75
151 #define	CD_STREETTALK_DA_SERVS	76
152 
153 /* User class identifier */
154 #define	CD_USER_CLASS_ID	77
155 
156 /* Newer options */
157 
158 #define	CD_SLPDA		78
159 #define	CD_SLPSS		79
160 #define	CD_AGENTOPT		82
161 #define	CD_FQDN			89
162 #define	CD_PXEARCHi		93
163 #define	CD_PXENIIi		94
164 #define	CD_PXECID		95
165 #define	CD_MULTICST		107
166 
167 #define	DHCP_FIRST_OPT		CD_SUBNETMASK
168 #define	DHCP_LAST_STD		CD_MULTICST
169 #define	DHCP_SITE_OPT		128		/* inclusive */
170 #define	DHCP_END_SITE		254
171 #define	DHCP_LAST_OPT		DHCP_END_SITE	/* last op code */
172 
173 #define	DHCP_MAX_OPT_SIZE	255	/* maximum option size in octets */
174 
175 /*
176  * DHCP Packet. What will fit in a ethernet frame. We may use a smaller
177  * size, based on what our transport can handle.
178  */
179 #define	DHCP_DEF_MAX_SIZE	576	/* as spec'ed in RFC 2131 */
180 #define	PKT_BUFFER		1486	/* max possible size of pkt buffer */
181 #define	BASE_PKT_SIZE		240	/* everything but the options */
182 typedef struct dhcp {
183 	uint8_t		op;		/* message opcode */
184 	uint8_t		htype;		/* Hardware address type */
185 	uint8_t		hlen;		/* Hardware address length */
186 	uint8_t		hops;		/* Used by relay agents */
187 	uint32_t	xid;		/* transaction id */
188 	uint16_t	secs;		/* Secs elapsed since client boot */
189 	uint16_t	flags;		/* DHCP Flags field */
190 	struct in_addr	ciaddr;		/* client IP addr */
191 	struct in_addr	yiaddr;		/* 'Your' IP addr. (from server) */
192 	struct in_addr	siaddr;		/* Boot server IP addr */
193 	struct in_addr	giaddr;		/* Relay agent IP addr */
194 	uint8_t		chaddr[16];	/* Client hardware addr */
195 	uint8_t		sname[64];	/* Optl. boot server hostname */
196 	uint8_t		file[128];	/* boot file name (ascii path) */
197 	uint8_t		cookie[4];	/* Magic cookie */
198 	uint8_t		options[60];	/* Options */
199 } PKT;
200 
201 typedef uint32_t	lease_t; /* DHCP lease time (32 bit quantity) */
202 
203 /*
204  * DHCP packet types. As per protocol.
205  */
206 #define	DISCOVER	((uint8_t)1)
207 #define	OFFER		((uint8_t)2)
208 #define	REQUEST		((uint8_t)3)
209 #define	DECLINE		((uint8_t)4)
210 #define	ACK		((uint8_t)5)
211 #define	NAK		((uint8_t)6)
212 #define	RELEASE		((uint8_t)7)
213 #define	INFORM		((uint8_t)8)
214 
215 /*
216  * Generic DHCP protocol defines
217  */
218 #define	DHCP_PERM	((lease_t)0xffffffff)	/* "permanent" lease time */
219 #define	BOOTREQUEST		(1)		/* BOOTP REQUEST opcode */
220 #define	BOOTREPLY		(2)		/* BOOTP REPLY opcode */
221 #define	BOOTMAGIC	{ 99, 130, 83, 99 }	/* rfc1048 magic cookie */
222 #define	BCAST_MASK	0x8000			/* BROADCAST flag */
223 
224 #ifdef	__cplusplus
225 }
226 #endif
227 
228 #endif	/* _DHCP_H */
229