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 * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
26 */
27
28 /*
29 * dhcp.h - Generic DHCP definitions, as per RFC's 2131 and 2132.
30 */
31
32 #ifndef _DHCP_H
33 #define _DHCP_H
34
35 #pragma ident "%Z%%M% %I% %E% SMI"
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 #ifdef _REENTRANT
42 #include <thread.h>
43 #endif /* _REENTRANT */
44
45 /*
46 * DHCP option codes.
47 */
48
49 #define CD_PAD 0
50 #define CD_END 255
51 #define CD_SUBNETMASK 1
52 #define CD_TIMEOFFSET 2
53 #define CD_ROUTER 3
54 #define CD_TIMESERV 4
55 #define CD_IEN116_NAME_SERV 5
56 #define CD_DNSSERV 6
57 #define CD_LOG_SERV 7
58 #define CD_COOKIE_SERV 8
59 #define CD_LPR_SERV 9
60 #define CD_IMPRESS_SERV 10
61 #define CD_RESOURCE_SERV 11
62 #define CD_HOSTNAME 12
63 #define CD_BOOT_SIZE 13
64 #define CD_DUMP_FILE 14
65 #define CD_DNSDOMAIN 15
66 #define CD_SWAP_SERV 16
67 #define CD_ROOT_PATH 17
68 #define CD_EXTEND_PATH 18
69
70 /* IP layer parameters */
71 #define CD_IP_FORWARDING_ON 19
72 #define CD_NON_LCL_ROUTE_ON 20
73 #define CD_POLICY_FILTER 21
74 #define CD_MAXIPSIZE 22
75 #define CD_IPTTL 23
76 #define CD_PATH_MTU_TIMEOUT 24
77 #define CD_PATH_MTU_TABLE_SZ 25
78
79 /* IP layer parameters per interface */
80 #define CD_MTU 26
81 #define CD_ALL_SUBNETS_LCL_ON 27
82 #define CD_BROADCASTADDR 28
83 #define CD_MASK_DISCVRY_ON 29
84 #define CD_MASK_SUPPLIER_ON 30
85 #define CD_ROUTER_DISCVRY_ON 31
86 #define CD_ROUTER_SOLICIT_SERV 32
87 #define CD_STATIC_ROUTE 33
88
89 /* Link Layer Parameters per Interface */
90 #define CD_TRAILER_ENCAPS_ON 34
91 #define CD_ARP_TIMEOUT 35
92 #define CD_ETHERNET_ENCAPS_ON 36
93
94 /* TCP Parameters */
95 #define CD_TCP_TTL 37
96 #define CD_TCP_KALIVE_INTVL 38
97 #define CD_TCP_KALIVE_GRBG_ON 39
98
99 /* Application layer parameters */
100 #define CD_NIS_DOMAIN 40
101 #define CD_NIS_SERV 41
102 #define CD_NTP_SERV 42
103 #define CD_VENDOR_SPEC 43
104
105 /* NetBIOS parameters */
106 #define CD_NETBIOS_NAME_SERV 44
107 #define CD_NETBIOS_DIST_SERV 45
108 #define CD_NETBIOS_NODE_TYPE 46
109 #define CD_NETBIOS_SCOPE 47
110
111 /* X Window parameters */
112 #define CD_XWIN_FONT_SERV 48
113 #define CD_XWIN_DISP_SERV 49
114
115 /* DHCP protocol extension options */
116 #define CD_REQUESTED_IP_ADDR 50
117 #define CD_LEASE_TIME 51
118 #define CD_OPTION_OVERLOAD 52
119 #define CD_DHCP_TYPE 53
120 #define CD_SERVER_ID 54
121 #define CD_REQUEST_LIST 55
122 #define CD_MESSAGE 56
123 #define CD_MAX_DHCP_SIZE 57
124 #define CD_T1_TIME 58
125 #define CD_T2_TIME 59
126 #define CD_CLASS_ID 60
127 #define CD_CLIENT_ID 61
128
129 /* Netware options */
130 #define CD_NW_IP_DOMAIN 62
131 #define CD_NW_IP_OPTIONS 63
132
133 /* Nisplus options */
134 #define CD_NISPLUS_DMAIN 64
135 #define CD_NISPLUS_SERVS 65
136
137 /* Optional sname/bootfile options */
138 #define CD_TFTP_SERV_NAME 66
139 #define CD_OPT_BOOTFILE_NAME 67
140
141 /* Additional server options */
142 #define CD_MOBILE_IP_AGENT 68
143 #define CD_SMTP_SERVS 69
144 #define CD_POP3_SERVS 70
145 #define CD_NNTP_SERVS 71
146 #define CD_WWW_SERVS 72
147 #define CD_FINGER_SERVS 73
148 #define CD_IRC_SERVS 74
149
150 /* Streettalk options */
151 #define CD_STREETTALK_SERVS 75
152 #define CD_STREETTALK_DA_SERVS 76
153
154 /* User class identifier */
155 #define CD_USER_CLASS_ID 77
156
157 /* Newer options */
158
159 #define CD_SLPDA 78
160 #define CD_SLPSS 79
161 #define CD_CLIENTFQDN 81
162 #define CD_AGENTOPT 82
163
164 /*
165 * Per RFC 3679, option 89 was "Never published as standard and [is] not in
166 * general use". See active CD_CLIENTFQDN and RFC 4702.
167 */
168 #define CD_FQDN 89
169
170 #define CD_PXEARCHi 93
171 #define CD_PXENIIi 94
172 #define CD_PXECID 95
173 #define CD_MULTICST 107
174
175 #define DHCP_FIRST_OPT CD_SUBNETMASK
176 #define DHCP_LAST_STD CD_MULTICST
177 #define DHCP_SITE_OPT 128 /* inclusive */
178 #define DHCP_END_SITE 254
179 #define DHCP_LAST_OPT DHCP_END_SITE /* last op code */
180
181 #define DHCP_MAX_OPT_SIZE 255 /* maximum option size in octets */
182
183 /*
184 * DHCP Packet. What will fit in a ethernet frame. We may use a smaller
185 * size, based on what our transport can handle.
186 */
187 #define DHCP_DEF_MAX_SIZE 576 /* as spec'ed in RFC 2131 */
188 #define PKT_BUFFER 1486 /* max possible size of pkt buffer */
189 #define BASE_PKT_SIZE 240 /* everything but the options */
190 typedef struct dhcp {
191 uint8_t op; /* message opcode */
192 uint8_t htype; /* Hardware address type */
193 uint8_t hlen; /* Hardware address length */
194 uint8_t hops; /* Used by relay agents */
195 uint32_t xid; /* transaction id */
196 uint16_t secs; /* Secs elapsed since client boot */
197 uint16_t flags; /* DHCP Flags field */
198 struct in_addr ciaddr; /* client IP addr */
199 struct in_addr yiaddr; /* 'Your' IP addr. (from server) */
200 struct in_addr siaddr; /* Boot server IP addr */
201 struct in_addr giaddr; /* Relay agent IP addr */
202 uint8_t chaddr[16]; /* Client hardware addr */
203 uint8_t sname[64]; /* Optl. boot server hostname */
204 uint8_t file[128]; /* boot file name (ascii path) */
205 uint8_t cookie[4]; /* Magic cookie */
206 uint8_t options[60]; /* Options */
207 } PKT;
208
209 typedef uint32_t lease_t; /* DHCP lease time (32 bit quantity) */
210
211 /*
212 * DHCP packet types. As per protocol.
213 */
214 #define DISCOVER ((uint8_t)1)
215 #define OFFER ((uint8_t)2)
216 #define REQUEST ((uint8_t)3)
217 #define DECLINE ((uint8_t)4)
218 #define ACK ((uint8_t)5)
219 #define NAK ((uint8_t)6)
220 #define RELEASE ((uint8_t)7)
221 #define INFORM ((uint8_t)8)
222
223 /*
224 * Generic DHCP protocol defines
225 */
226 #define DHCP_PERM ((lease_t)0xffffffff) /* "permanent" lease time */
227 #define BOOTREQUEST (1) /* BOOTP REQUEST opcode */
228 #define BOOTREPLY (2) /* BOOTP REPLY opcode */
229 #define BOOTMAGIC { 99, 130, 83, 99 } /* rfc1048 magic cookie */
230 #define BCAST_MASK 0x8000 /* BROADCAST flag */
231
232 #ifdef __cplusplus
233 }
234 #endif
235
236 #endif /* _DHCP_H */