modules: correct dependencies / version declarations
[dragonfly.git] / sbin / dhclient / dhcp.h
blobb1bb20f6c9840e885e0502dd3a188d2147421ad9
1 /* $OpenBSD: dhcp.h,v 1.7 2007/02/01 22:39:43 krw Exp $ */
2 /* $DragonFly: src/sbin/dhclient/dhcp.h,v 1.1 2008/08/30 16:07:58 hasso Exp $ */
4 /* Protocol structures... */
6 /*
7 * Copyright (c) 1995, 1996 The Internet Software Consortium.
8 * All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of The Internet Software Consortium nor the names
20 * of its contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
24 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
28 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
31 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
32 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
34 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
37 * This software has been written for the Internet Software Consortium
38 * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
39 * Enterprises. To learn more about the Internet Software Consortium,
40 * see ``http://www.vix.com/isc''. To learn more about Vixie
41 * Enterprises, see ``http://www.vix.com''.
44 #define DHCP_UDP_OVERHEAD (20 + /* IP header */ \
45 8) /* UDP header */
46 #define DHCP_SNAME_LEN 64
47 #define DHCP_FILE_LEN 128
48 #define DHCP_FIXED_NON_UDP 236
49 #define DHCP_FIXED_LEN (DHCP_FIXED_NON_UDP + DHCP_UDP_OVERHEAD)
50 /* Everything but options. */
51 #define DHCP_MTU_MAX 1500
52 #define DHCP_OPTION_LEN (DHCP_MTU_MAX - DHCP_FIXED_LEN)
54 #define BOOTP_MIN_LEN 300
56 struct dhcp_packet {
57 u_int8_t op; /* Message opcode/type */
58 u_int8_t htype; /* Hardware addr type (see net/if_types.h) */
59 u_int8_t hlen; /* Hardware addr length */
60 u_int8_t hops; /* Number of relay agent hops from client */
61 u_int32_t xid; /* Transaction ID */
62 u_int16_t secs; /* Seconds since client started looking */
63 u_int16_t flags; /* Flag bits */
64 struct in_addr ciaddr; /* Client IP address (if already in use) */
65 struct in_addr yiaddr; /* Client IP address */
66 struct in_addr siaddr; /* IP address of next server to talk to */
67 struct in_addr giaddr; /* DHCP relay agent IP address */
68 unsigned char chaddr[16]; /* Client hardware address */
69 char sname[DHCP_SNAME_LEN]; /* Server name */
70 char file[DHCP_FILE_LEN]; /* Boot filename */
71 unsigned char options[DHCP_OPTION_LEN];
72 /* Optional parameters
73 (actual length dependent on MTU). */
76 /* BOOTP (rfc951) message types */
77 #define BOOTREQUEST 1
78 #define BOOTREPLY 2
80 /* Possible values for flags field... */
81 #define BOOTP_BROADCAST 32768L
83 /* Possible values for hardware type (htype) field... */
84 #define HTYPE_ETHER 1 /* Ethernet */
85 #define HTYPE_IEEE802 6 /* IEEE 802.2 Token Ring... */
86 #define HTYPE_FDDI 8 /* FDDI... */
88 /* Magic cookie validating dhcp options field (and bootp vendor
89 extensions field). */
90 #define DHCP_OPTIONS_COOKIE "\143\202\123\143"
92 /* DHCP Option codes: */
94 #define DHO_PAD 0
95 #define DHO_SUBNET_MASK 1
96 #define DHO_TIME_OFFSET 2
97 #define DHO_ROUTERS 3
98 #define DHO_TIME_SERVERS 4
99 #define DHO_NAME_SERVERS 5
100 #define DHO_DOMAIN_NAME_SERVERS 6
101 #define DHO_LOG_SERVERS 7
102 #define DHO_COOKIE_SERVERS 8
103 #define DHO_LPR_SERVERS 9
104 #define DHO_IMPRESS_SERVERS 10
105 #define DHO_RESOURCE_LOCATION_SERVERS 11
106 #define DHO_HOST_NAME 12
107 #define DHO_BOOT_SIZE 13
108 #define DHO_MERIT_DUMP 14
109 #define DHO_DOMAIN_NAME 15
110 #define DHO_SWAP_SERVER 16
111 #define DHO_ROOT_PATH 17
112 #define DHO_EXTENSIONS_PATH 18
113 #define DHO_IP_FORWARDING 19
114 #define DHO_NON_LOCAL_SOURCE_ROUTING 20
115 #define DHO_POLICY_FILTER 21
116 #define DHO_MAX_DGRAM_REASSEMBLY 22
117 #define DHO_DEFAULT_IP_TTL 23
118 #define DHO_PATH_MTU_AGING_TIMEOUT 24
119 #define DHO_PATH_MTU_PLATEAU_TABLE 25
120 #define DHO_INTERFACE_MTU 26
121 #define DHO_ALL_SUBNETS_LOCAL 27
122 #define DHO_BROADCAST_ADDRESS 28
123 #define DHO_PERFORM_MASK_DISCOVERY 29
124 #define DHO_MASK_SUPPLIER 30
125 #define DHO_ROUTER_DISCOVERY 31
126 #define DHO_ROUTER_SOLICITATION_ADDRESS 32
127 #define DHO_STATIC_ROUTES 33
128 #define DHO_TRAILER_ENCAPSULATION 34
129 #define DHO_ARP_CACHE_TIMEOUT 35
130 #define DHO_IEEE802_3_ENCAPSULATION 36
131 #define DHO_DEFAULT_TCP_TTL 37
132 #define DHO_TCP_KEEPALIVE_INTERVAL 38
133 #define DHO_TCP_KEEPALIVE_GARBAGE 39
134 #define DHO_NIS_DOMAIN 40
135 #define DHO_NIS_SERVERS 41
136 #define DHO_NTP_SERVERS 42
137 #define DHO_VENDOR_ENCAPSULATED_OPTIONS 43
138 #define DHO_NETBIOS_NAME_SERVERS 44
139 #define DHO_NETBIOS_DD_SERVER 45
140 #define DHO_NETBIOS_NODE_TYPE 46
141 #define DHO_NETBIOS_SCOPE 47
142 #define DHO_FONT_SERVERS 48
143 #define DHO_X_DISPLAY_MANAGER 49
144 #define DHO_DHCP_REQUESTED_ADDRESS 50
145 #define DHO_DHCP_LEASE_TIME 51
146 #define DHO_DHCP_OPTION_OVERLOAD 52
147 #define DHO_DHCP_MESSAGE_TYPE 53
148 #define DHO_DHCP_SERVER_IDENTIFIER 54
149 #define DHO_DHCP_PARAMETER_REQUEST_LIST 55
150 #define DHO_DHCP_MESSAGE 56
151 #define DHO_DHCP_MAX_MESSAGE_SIZE 57
152 #define DHO_DHCP_RENEWAL_TIME 58
153 #define DHO_DHCP_REBINDING_TIME 59
154 #define DHO_DHCP_CLASS_IDENTIFIER 60
155 #define DHO_DHCP_CLIENT_IDENTIFIER 61
156 #define DHO_DHCP_USER_CLASS_ID 77
157 #define DHO_END 255
159 /* DHCP message types. */
160 #define DHCPDISCOVER 1
161 #define DHCPOFFER 2
162 #define DHCPREQUEST 3
163 #define DHCPDECLINE 4
164 #define DHCPACK 5
165 #define DHCPNAK 6
166 #define DHCPRELEASE 7
167 #define DHCPINFORM 8