diff options
Diffstat (limited to 'networking/udhcp/options.h')
| -rw-r--r-- | networking/udhcp/options.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/networking/udhcp/options.h b/networking/udhcp/options.h new file mode 100644 index 0000000..d18a353 --- /dev/null +++ b/networking/udhcp/options.h @@ -0,0 +1,121 @@ +/* vi: set sw=4 ts=4: */ +/* options.h */ +#ifndef _OPTIONS_H +#define _OPTIONS_H + +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility push(hidden) +#endif + +#define TYPE_MASK 0x0F + +enum { + OPTION_IP = 1, + OPTION_IP_PAIR, + OPTION_STRING, +#if ENABLE_FEATURE_UDHCP_RFC3397 + OPTION_STR1035, /* RFC1035 compressed domain name list */ +#endif + OPTION_BOOLEAN, + OPTION_U8, + OPTION_U16, + OPTION_S16, + OPTION_U32, + OPTION_S32 +}; + +#define OPTION_REQ 0x10 /* have the client request this option */ +#define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */ + +/*****************************************************************/ +/* Do not modify below here unless you know what you are doing!! */ +/*****************************************************************/ + +/* DHCP protocol -- see RFC 2131 */ +#define DHCP_MAGIC 0x63825363 + + +/* DHCP option codes (partial list) */ +#define DHCP_PADDING 0x00 +#define DHCP_SUBNET 0x01 +#define DHCP_TIME_OFFSET 0x02 +#define DHCP_ROUTER 0x03 +#define DHCP_TIME_SERVER 0x04 +#define DHCP_NAME_SERVER 0x05 +#define DHCP_DNS_SERVER 0x06 +#define DHCP_LOG_SERVER 0x07 +#define DHCP_COOKIE_SERVER 0x08 +#define DHCP_LPR_SERVER 0x09 +#define DHCP_HOST_NAME 0x0c +#define DHCP_BOOT_SIZE 0x0d +#define DHCP_DOMAIN_NAME 0x0f +#define DHCP_SWAP_SERVER 0x10 +#define DHCP_ROOT_PATH 0x11 +#define DHCP_IP_TTL 0x17 +#define DHCP_MTU 0x1a +#define DHCP_BROADCAST 0x1c +#define DHCP_NTP_SERVER 0x2a +#define DHCP_WINS_SERVER 0x2c +#define DHCP_REQUESTED_IP 0x32 +#define DHCP_LEASE_TIME 0x33 +#define DHCP_OPTION_OVER 0x34 +#define DHCP_MESSAGE_TYPE 0x35 +#define DHCP_SERVER_ID 0x36 +#define DHCP_PARAM_REQ 0x37 +#define DHCP_MESSAGE 0x38 +#define DHCP_MAX_SIZE 0x39 +#define DHCP_T1 0x3a +#define DHCP_T2 0x3b +#define DHCP_VENDOR 0x3c +#define DHCP_CLIENT_ID 0x3d +#define DHCP_FQDN 0x51 +#define DHCP_END 0xFF + + +#define BOOTREQUEST 1 +#define BOOTREPLY 2 + +#define ETH_10MB 1 +#define ETH_10MB_LEN 6 + +#define DHCPDISCOVER 1 /* client -> server */ +#define DHCPOFFER 2 /* client <- server */ +#define DHCPREQUEST 3 /* client -> server */ +#define DHCPDECLINE 4 /* client -> server */ +#define DHCPACK 5 /* client <- server */ +#define DHCPNAK 6 /* client <- server */ +#define DHCPRELEASE 7 /* client -> server */ +#define DHCPINFORM 8 /* client -> server */ + +#define OPTION_FIELD 0 +#define FILE_FIELD 1 +#define SNAME_FIELD 2 + +/* miscellaneous defines */ +#define OPT_CODE 0 +#define OPT_LEN 1 +#define OPT_DATA 2 + +struct dhcp_option { + uint8_t flags; + uint8_t code; +}; + +extern const struct dhcp_option dhcp_options[]; +extern const char dhcp_option_strings[]; +extern const uint8_t dhcp_option_lengths[]; + +uint8_t *get_option(struct dhcpMessage *packet, int code) FAST_FUNC; +int end_option(uint8_t *optionptr) FAST_FUNC; +int add_option_string(uint8_t *optionptr, uint8_t *string) FAST_FUNC; +int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC; +#if ENABLE_FEATURE_UDHCP_RFC3397 +char *dname_dec(const uint8_t *cstr, int clen, const char *pre) FAST_FUNC; +uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) FAST_FUNC; +#endif + +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility pop +#endif + +#endif |