/* dhcp.h - Definitions related to DHCP */

#define DHCP

#define DHCP_RETRY      5

#define DHCP_PADDING                    0
#define DHCP_SUBNET_MASK                1
#define DHCP_ROUTER                     3
#define DHCP_DNS_SERVER                 6
#define DHCP_DOMAIN_NAME                15
#define DHCP_NTP_SERVER_IP              42
#define DHCP_VENDER_OPTIONS             43
#define DHCP_REQUESTED_IP               50
#define DHCP_IP_ADDR_LEASE_TIME         51
#define DHCP_OPTION_OVERLOAD            52
#define DHCP_MESSAGE_TYPE               53
#define DHCP_SERVER_ID                  54
#define DHCP_PARAMETER_REQUEST_LIST     55
#define DHCP_MESSAGE                    56
#define DHCP_MAXIMUM_DHCP_MESSAGE_SIZE  57
#define DHCP_RENEWAL_TIME_VALUE         58
#define DHCP_REBINDING_TIME_VALUE       59
#define DHCP_VENDOR_CLASS_ID            60
#define DHCP_CLIENT_ID                  61
#define DHCP_TFTP_SERVER_NAME           66
#define DHCP_BOOTFILE_NAME              67
#define DHCP_CLIENT_SYS_ARCH            93
#define DHCP_CLIENT_NET_ID              94
#define DHCP_CLIENT_MACHINE_ID          97
#define DHCP_MESSAGE_END               255

#pragma pack(2)
struct  dhcpmsg {
        byte    dc_bop;                 /* DHCP bootp op 1=req 2=reply  */
        byte    dc_htype;               /* DHCP hardware type           */
        byte    dc_hlen;                /* DHCP hardware address length */
        byte    dc_hops;                /* DHCP hop count               */
        uint32  dc_xid;                 /* DHCP xid                     */
        uint16  dc_secs;                /* DHCP seconds                 */
        uint16  dc_flags;               /* DHCP flags                   */
        uint32  dc_cip;                 /* DHCP client IP address       */
        uint32  dc_yip;                 /* DHCP your IP address         */
        uint32  dc_sip;                 /* DHCP server IP address       */
        uint32  dc_gip;                 /* DHCP gateway IP address      */
        byte    dc_chaddr[16];          /* DHCP client hardware address */
        union {
                byte    dc_bootp[192];  /* DHCP bootp area (zero)       */
                struct {
                        byte   sname[64];       /* TFTP Server Name     */
                        byte   bootfile[128];   /* TFTP File name       */
                };
        };
        uint32  dc_cookie;              /* DHCP cookie                  */
        byte    dc_opt[1024];           /* DHCP options area (large     */
                                        /*  enough to hold more than    */
                                        /*  reasonable options          */
};
#pragma pack()