1 /* vi: set sw=4 ts=4: */
3 #ifndef UDHCP_OPTIONS_H
4 #define UDHCP_OPTIONS_H 1
6 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
14 #if ENABLE_FEATURE_UDHCP_RFC3397
15 OPTION_STR1035, /* RFC1035 compressed domain name list */
25 #define OPTION_REQ 0x10 /* have the client request this option */
26 #define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */
28 /*****************************************************************/
29 /* Do not modify below here unless you know what you are doing!! */
30 /*****************************************************************/
32 /* DHCP protocol -- see RFC 2131 */
33 #define DHCP_MAGIC 0x63825363
35 /* DHCP option codes (partial list) */
36 #define DHCP_PADDING 0x00
37 #define DHCP_SUBNET 0x01
38 #define DHCP_TIME_OFFSET 0x02
39 #define DHCP_ROUTER 0x03
40 #define DHCP_TIME_SERVER 0x04
41 #define DHCP_NAME_SERVER 0x05
42 #define DHCP_DNS_SERVER 0x06
43 #define DHCP_LOG_SERVER 0x07
44 #define DHCP_COOKIE_SERVER 0x08
45 #define DHCP_LPR_SERVER 0x09
46 #define DHCP_HOST_NAME 0x0c
47 #define DHCP_BOOT_SIZE 0x0d
48 #define DHCP_DOMAIN_NAME 0x0f
49 #define DHCP_SWAP_SERVER 0x10
50 #define DHCP_ROOT_PATH 0x11
51 #define DHCP_IP_TTL 0x17
53 #define DHCP_BROADCAST 0x1c
54 #define DHCP_NTP_SERVER 0x2a
55 #define DHCP_WINS_SERVER 0x2c
56 #define DHCP_REQUESTED_IP 0x32
57 #define DHCP_LEASE_TIME 0x33
58 #define DHCP_OPTION_OVERLOAD 0x34
59 #define DHCP_MESSAGE_TYPE 0x35
60 #define DHCP_SERVER_ID 0x36
61 #define DHCP_PARAM_REQ 0x37
62 #define DHCP_MESSAGE 0x38
63 #define DHCP_MAX_SIZE 0x39
66 #define DHCP_VENDOR 0x3c
67 #define DHCP_CLIENT_ID 0x3d
68 #define DHCP_FQDN 0x51
70 /* Offsets in option byte sequence */
74 /* Bits in "overload" option */
75 #define OPTION_FIELD 0
83 #define ETH_10MB_LEN 6
85 #define DHCPDISCOVER 1 /* client -> server */
86 #define DHCPOFFER 2 /* client <- server */
87 #define DHCPREQUEST 3 /* client -> server */
88 #define DHCPDECLINE 4 /* client -> server */
89 #define DHCPACK 5 /* client <- server */
90 #define DHCPNAK 6 /* client <- server */
91 #define DHCPRELEASE 7 /* client -> server */
92 #define DHCPINFORM 8 /* client -> server */
99 extern const struct dhcp_option dhcp_options[];
100 extern const char dhcp_option_strings[];
101 extern const uint8_t dhcp_option_lengths[];
103 uint8_t *get_option(struct dhcpMessage *packet, int code) FAST_FUNC;
104 int end_option(uint8_t *optionptr) FAST_FUNC;
105 int add_option_string(uint8_t *optionptr, uint8_t *string) FAST_FUNC;
106 int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC;
107 #if ENABLE_FEATURE_UDHCP_RFC3397
108 char *dname_dec(const uint8_t *cstr, int clen, const char *pre) FAST_FUNC;
109 uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) FAST_FUNC;
112 POP_SAVED_FUNCTION_VISIBILITY