added dbug's fec and network routines

BaS_gcc/include/udp.h

@@ -0,0 +1,61 @@
+/*
+ * File:        udp.h
+ * Purpose:     User Datagram Protocol, UDP, data definitions
+ *
+ * Notes:
+ */
+
+#ifndef _UDP_H
+#define _UDP_H
+
+/********************************************************************/
+
+typedef struct
+{
+    uint16_t      src_port;
+    uint16_t      dest_port;
+    uint16_t      length;
+    uint16_t      chksum;
+} udp_frame_hdr;
+
+#define UDP_SOURCE(a)       (a->src_port)
+#define UDP_DEST(a)         (a->dest_port)
+#define UDP_LENGTH(a)       (a->length)
+#define UDP_CHKSUM(a)       (a->chksum)
+
+#define DEFAULT_UDP_PORT    (0x4321)
+#define UDP_PORT_TELNET     (23)
+#define UDP_PORT_FTP        (21)
+#define UDP_PORT_TFTP       (69)
+
+/* Protocol Header information */
+#define UDP_HDR_OFFSET      (ETH_HDR_LEN + IP_HDR_SIZE)
+#define UDP_HDR_SIZE        8
+
+
+/********************************************************************/
+
+void
+udp_init (void);
+
+void
+udp_prime_port (uint16_t);
+
+uint16_t
+udp_obtain_free_port (void);
+
+void
+udp_bind_port ( uint16_t, void (*)(NIF *,NBUF *));
+
+void
+udp_free_port (uint16_t);
+
+int
+udp_send (NIF *, uint8_t *, int, int, NBUF *);
+
+void
+udp_handler (NIF *, NBUF *);
+
+/********************************************************************/
+
+#endif  /* _UDP_H */