further implemented bootp protocol

include/bootp.h

@@ -8,12 +8,28 @@
 #ifndef _BOOTP_H_
 #define _BOOTP_H_
 
-/********************************************************************/
+#define BOOTP_SERVER_PORT	67
+#define BOOTP_CLIENT_PORT	68
+
+/* protocol header information */
+#define BOOTP_HDR_OFFSET	(ETH_HDR_LEN + IP_HDR_SIZE + UDP_HDR_SIZE)
+
+/* timeout in seconds */
+#define BOOTP_TIMEOUT		2
+
+/* BOOTP connection status */
+
+struct bootp_connection
+{
+	bool open;				/* connection established flag */
+	NIF *nif;				/* pointer to network interface */
+	IP_ADDR server_ip;		/* server IP address */
+};
 
 /*
  * This data definition is defined for Ethernet only!
  */
-typedef struct
+struct bootp_packet
 {
     uint8_t type;			/* bootp operation type */
     uint8_t htype;			/* hardware type */
@@ -29,9 +45,9 @@ typedef struct
 	uint8_t sname[64];		/* server name */
 	uint8_t file[128];		/* name of bootfile */
 	uint8_t vend[64];		/* vendor specific (see below) */
-} bootp_frame_hdr;
+};
 
-#define BOOTP_HDR_LEN		sizeof(bootp_frame_hdr)
+#define BOOTP_PACKET_LEN	(BOOTP_HDR_OFFSET + sizeof(struct bootp_packet))
 
 /* possible values for type field */
 #define BOOTP_TYPE_BOOTREQUEST	1
@@ -46,11 +62,6 @@ typedef struct
 /* values for flags - only broadcast flag in use */
 #define BOOTP_FLAGS_BROADCAST	1
 
-#define BOOTP_TIMEOUT     (1)     /* Timeout in seconds */
-
-/* Protocol Header information */
-#define BOOTP_HDR_OFFSET  ETH_HDR_LEN
-
 extern void bootp_request(NIF *, uint8_t *);
 extern void bootp_handler(NIF *, NBUF *);
 //extern void bootp_init(BOOTP_INFO *);