networkstack.h

WWVB receiver using AVR.

/* $Id: networkstack.h,v 1.13 2005/04/25 10:19:03 simimeie Exp $
 * Basic Network Stack. Handles ARP / IP.
 */ 
 
#ifndef _NETWORKSTACK_H_
#define _NETWORKSTACK_H_

#ifdef ISANETWORK

/* Network Configuration. This gets read from EEPROM, set it in eepromdata.h */
extern uint8_t net_ip[4];
extern uint8_t net_mask[4];
extern uint8_t net_gate[4];
extern uint8_t net_mac[6];
extern uint8_t net_rconpass[9]; /* Password for commands over ethernet */
extern uint8_t net_packet[1518];
extern uint16_t net_recvdbytes; /* how many bytes the last packet had */
#ifdef NETWORKSTATS
extern uint32_t net_rxbytes; /* Received Bytes */
extern uint32_t net_txbytes; /* Transmitted Bytes */
extern uint32_t net_pings; /* ICMP Pings */
extern uint32_t net_ntpqs; /* NTP Queries */
extern uint32_t net_rcons; /* Remote Control Commands */
#endif

#define NET_MCASTBIT	0x01

void net_init(void);
void net_sendpacket(uint8_t * packet, uint16_t len);
/* Checks whether a packet is available.
 * If not, it returns 0.
 * If a packet is available, it is put into the net_packet
 * buffer, and the length of the packet is returned */
uint16_t net_receivepacket(void);
void net_handlereceivedpacket(void);
void net_handlearp(void);
void net_handleip(void);
uint16_t net_calcipchecksum(uint8_t * packet, uint8_t end);

#else /* ndef ISANETWORK */

#define net_init() if (0) { }
#define net_sendpacket(a, b) if (0) { }
#define net_receivepacket() 0
#define net_handlereceivedpacket() if (0) { }
#define net_handlearp() if (0) { }
#define net_handleip() if (0) { }
#define net_calcipchecksum(a, b) 0

#endif /* ndef ISANETWORK */

#endif