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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
5f404b1e PF |
2 | #pragma once |
3 | ||
4 | /*** | |
810adae9 | 5 | Copyright © 2013 Intel Corporation. All rights reserved. |
5f404b1e PF |
6 | ***/ |
7 | ||
5f404b1e | 8 | #include <netinet/ip.h> |
71d35b6b | 9 | #include <netinet/udp.h> |
5f404b1e PF |
10 | #include <stdint.h> |
11 | ||
12 | #include "macro.h" | |
13 | #include "sparse-endian.h" | |
14bd102e SS |
14 | #include "time-util.h" |
15 | ||
16 | /* RFC 8925 - IPv6-Only Preferred Option for DHCPv4 3.4. | |
17 | * MIN_V6ONLY_WAIT: The lower boundary for V6ONLY_WAIT. Value: 300 seconds */ | |
18 | #define MIN_V6ONLY_WAIT_USEC (300U * USEC_PER_SEC) | |
5f404b1e PF |
19 | |
20 | struct DHCPMessage { | |
21 | uint8_t op; | |
22 | uint8_t htype; | |
23 | uint8_t hlen; | |
24 | uint8_t hops; | |
25 | be32_t xid; | |
26 | be16_t secs; | |
27 | be16_t flags; | |
3b349af6 PF |
28 | be32_t ciaddr; |
29 | be32_t yiaddr; | |
30 | be32_t siaddr; | |
31 | be32_t giaddr; | |
5f404b1e PF |
32 | uint8_t chaddr[16]; |
33 | uint8_t sname[64]; | |
34 | uint8_t file[128]; | |
3b7ca119 | 35 | be32_t magic; |
d42add3c | 36 | uint8_t options[]; |
5f404b1e PF |
37 | } _packed_; |
38 | ||
39 | typedef struct DHCPMessage DHCPMessage; | |
40 | ||
41 | struct DHCPPacket { | |
42 | struct iphdr ip; | |
43 | struct udphdr udp; | |
44 | DHCPMessage dhcp; | |
45 | } _packed_; | |
46 | ||
47 | typedef struct DHCPPacket DHCPPacket; | |
48 | ||
8c00042c PF |
49 | #define DHCP_IP_SIZE (int32_t)(sizeof(struct iphdr)) |
50 | #define DHCP_IP_UDP_SIZE (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE) | |
4473cd7f YW |
51 | #define DHCP_HEADER_SIZE (int32_t)(sizeof(DHCPMessage)) |
52 | #define DHCP_MIN_MESSAGE_SIZE 576 /* the minimum internet hosts must be able to receive, see RFC 2132 Section 9.10 */ | |
53 | #define DHCP_MIN_OPTIONS_SIZE (DHCP_MIN_MESSAGE_SIZE - DHCP_HEADER_SIZE) | |
54 | #define DHCP_MIN_PACKET_SIZE (DHCP_MIN_MESSAGE_SIZE + DHCP_IP_UDP_SIZE) | |
3b7ca119 | 55 | #define DHCP_MAGIC_COOKIE (uint32_t)(0x63825363) |
8c00042c | 56 | |
46a66b79 PF |
57 | enum { |
58 | DHCP_PORT_SERVER = 67, | |
59 | DHCP_PORT_CLIENT = 68, | |
60 | }; | |
61 | ||
5f404b1e | 62 | enum DHCPState { |
8412d4c8 | 63 | DHCP_STATE_STOPPED, |
64 | DHCP_STATE_INIT, | |
65 | DHCP_STATE_SELECTING, | |
66 | DHCP_STATE_INIT_REBOOT, | |
67 | DHCP_STATE_REBOOTING, | |
68 | DHCP_STATE_REQUESTING, | |
69 | DHCP_STATE_BOUND, | |
70 | DHCP_STATE_RENEWING, | |
71 | DHCP_STATE_REBINDING, | |
72 | _DHCP_STATE_MAX, | |
73 | _DHCP_STATE_INVALID = -EINVAL, | |
5f404b1e PF |
74 | }; |
75 | ||
76 | typedef enum DHCPState DHCPState; | |
77 | ||
78 | enum { | |
79 | BOOTREQUEST = 1, | |
80 | BOOTREPLY = 2, | |
81 | }; | |
82 | ||
83 | enum { | |
71a9e3a3 YW |
84 | DHCP_DISCOVER = 1, /* [RFC2132] */ |
85 | DHCP_OFFER = 2, /* [RFC2132] */ | |
86 | DHCP_REQUEST = 3, /* [RFC2132] */ | |
87 | DHCP_DECLINE = 4, /* [RFC2132] */ | |
88 | DHCP_ACK = 5, /* [RFC2132] */ | |
89 | DHCP_NAK = 6, /* [RFC2132] */ | |
90 | DHCP_RELEASE = 7, /* [RFC2132] */ | |
91 | DHCP_INFORM = 8, /* [RFC2132] */ | |
92 | DHCP_FORCERENEW = 9, /* [RFC3203] */ | |
93 | DHCPLEASEQUERY = 10, /* [RFC4388] */ | |
94 | DHCPLEASEUNASSIGNED = 11, /* [RFC4388] */ | |
95 | DHCPLEASEUNKNOWN = 12, /* [RFC4388] */ | |
96 | DHCPLEASEACTIVE = 13, /* [RFC4388] */ | |
97 | DHCPBULKLEASEQUERY = 14, /* [RFC6926] */ | |
98 | DHCPLEASEQUERYDONE = 15, /* [RFC6926] */ | |
99 | DHCPACTIVELEASEQUERY = 16, /* [RFC7724] */ | |
100 | DHCPLEASEQUERYSTATUS = 17, /* [RFC7724] */ | |
101 | DHCPTLS = 18, /* [RFC7724] */ | |
5f404b1e PF |
102 | }; |
103 | ||
104 | enum { | |
105 | DHCP_OVERLOAD_FILE = 1, | |
106 | DHCP_OVERLOAD_SNAME = 2, | |
107 | }; | |
108 | ||
23873e25 BG |
109 | #define DHCP_MAX_FQDN_LENGTH 255 |
110 | ||
111 | enum { | |
112 | DHCP_FQDN_FLAG_S = (1 << 0), | |
113 | DHCP_FQDN_FLAG_O = (1 << 1), | |
114 | DHCP_FQDN_FLAG_E = (1 << 2), | |
115 | DHCP_FQDN_FLAG_N = (1 << 3), | |
116 | }; | |
8412d4c8 | 117 | |
118 | const char *dhcp_state_to_string(DHCPState s) _const_; |