/* options.h */#ifndef _OPTIONS_H#define _OPTIONS_H#include "packet.h"#define TYPE_MASK	0x0Fenum {	OPTION_IP=1,	OPTION_IP_PAIR,	OPTION_STRING,	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 */struct dhcp_option {	char name[10];	char flags;	uint8_t code;};extern struct dhcp_option dhcp_options[];extern int option_lengths[];uint8_t *get_option(struct dhcpMessage *packet, int code);int end_option(uint8_t *optionptr);int add_option_string(uint8_t *optionptr, uint8_t *string);int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data);#endif