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064af421 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2008, 2011 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 BP |
15 | */ |
16 | ||
17 | #ifndef DHCP_H | |
18 | #define DHCP_H 1 | |
19 | ||
20 | #include <stdint.h> | |
21 | #include "packets.h" | |
22 | #include "util.h" | |
23 | ||
c2fea58c JP |
24 | /* Ports used by DHCP. */ |
25 | #define DHCP_SERVER_PORT 67 /* Port used by DHCP server. */ | |
26 | #define DHCP_CLIENT_PORT 68 /* Port used by DHCP client. */ | |
27 | ||
42814145 NS |
28 | #define DHCP_MAGIC_COOKIE 0x63825363 |
29 | ||
064af421 BP |
30 | #define DHCP_HEADER_LEN 236 |
31 | struct dhcp_header { | |
32 | uint8_t op; /* DHCP_BOOTREQUEST or DHCP_BOOTREPLY. */ | |
33 | uint8_t htype; /* ARP_HRD_ETHERNET (typically). */ | |
34 | uint8_t hlen; /* ETH_ADDR_LEN (typically). */ | |
35 | uint8_t hops; /* Hop count; set to 0 by client. */ | |
dbba996b BP |
36 | ovs_be32 xid; /* Transaction ID. */ |
37 | ovs_be16 secs; /* Since client started address acquisition. */ | |
38 | ovs_be16 flags; /* DHCP_FLAGS_*. */ | |
39 | ovs_be32 ciaddr; /* Client IP, if it has a lease for one. */ | |
40 | ovs_be32 yiaddr; /* Client ("your") IP address. */ | |
41 | ovs_be32 siaddr; /* Next server IP address. */ | |
42 | ovs_be32 giaddr; /* Relay agent IP address. */ | |
064af421 BP |
43 | uint8_t chaddr[16]; /* Client hardware address. */ |
44 | char sname[64]; /* Optional server host name. */ | |
45 | char file[128]; /* Boot file name. */ | |
46 | /* Followed by variable-length options field. */ | |
47 | }; | |
48 | BUILD_ASSERT_DECL(DHCP_HEADER_LEN == sizeof(struct dhcp_header)); | |
49 | ||
42814145 NS |
50 | #define DHCP_OP_REQUEST 1 |
51 | #define DHCP_OP_REPLY 2 | |
52 | ||
53 | #define DHCP_MSG_DISCOVER 1 | |
54 | #define DHCP_MSG_OFFER 2 | |
55 | #define DHCP_MSG_REQUEST 3 | |
56 | #define DHCP_MSG_ACK 5 | |
57 | ||
58 | #define DHCP_OPT_MSG_TYPE 53 | |
59 | #define DHCP_OPT_END 255 | |
60 | ||
064af421 | 61 | #endif /* dhcp.h */ |