/*
|
/*
|
* LiMon Monitor (LiMon) - Network.
|
* LiMon Monitor (LiMon) - Network.
|
*
|
*
|
* Copyright 1994 - 2000 Neil Russell.
|
* Copyright 1994 - 2000 Neil Russell.
|
* (See License)
|
* (See License)
|
*
|
*
|
*
|
*
|
* History
|
* History
|
* 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
|
* 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
|
*/
|
*/
|
|
|
#ifndef __NET_H__
|
#ifndef __NET_H__
|
#define __NET_H__
|
#define __NET_H__
|
|
|
|
|
// TFTP running checksum defined here... tftp.h not in common include/ path
|
// TFTP running checksum defined here... tftp.h not in common include/ path
|
extern unsigned long TFTP_CHKSUM;
|
extern unsigned long TFTP_CHKSUM;
|
|
|
/*
|
/*
|
* The number of receive packet buffers, and the required packet buffer
|
* The number of receive packet buffers, and the required packet buffer
|
* alignment in memory.
|
* alignment in memory.
|
*
|
*
|
*/
|
*/
|
|
|
#define PKTBUFSRX 4
|
#define PKTBUFSRX 4
|
#define PKTALIGN 32
|
#define PKTALIGN 32
|
|
|
/****** from cpu_arch.h ************/
|
/****** from cpu_arch.h ************/
|
|
|
/* Byte swapping stuff (not needed on PPC). */
|
/* Byte swapping stuff (not needed on PPC). */
|
|
|
#define SWAP16(x) (x)
|
#define SWAP16(x) (x)
|
#define SWAP16c(x) (x)
|
#define SWAP16c(x) (x)
|
#define SWAP32(x) (x)
|
#define SWAP32(x) (x)
|
|
|
/****** end from cpu_arch.h **************/
|
/****** end from cpu_arch.h **************/
|
|
|
typedef unsigned long IPaddr_t;
|
typedef unsigned long IPaddr_t;
|
|
|
|
|
|
|
/*
|
/*
|
* The current receive packet handler. Called with a pointer to the
|
* The current receive packet handler. Called with a pointer to the
|
* application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
|
* application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
|
* All other packets are dealt with without calling the handler.
|
* All other packets are dealt with without calling the handler.
|
*/
|
*/
|
typedef void rxhand_f(unsigned char *, unsigned, unsigned, unsigned);
|
typedef void rxhand_f(unsigned char *, unsigned, unsigned, unsigned);
|
|
|
/*
|
/*
|
* A timeout handler. Called after time interval has expired.
|
* A timeout handler. Called after time interval has expired.
|
*/
|
*/
|
typedef void thand_f(void);
|
typedef void thand_f(void);
|
|
|
#ifdef CONFIG_NET_MULTI
|
#ifdef CONFIG_NET_MULTI
|
|
|
#define NAMESIZE 16
|
#define NAMESIZE 16
|
|
|
enum eth_state_t {
|
enum eth_state_t {
|
ETH_STATE_INIT,
|
ETH_STATE_INIT,
|
ETH_STATE_PASSIVE,
|
ETH_STATE_PASSIVE,
|
ETH_STATE_ACTIVE
|
ETH_STATE_ACTIVE
|
};
|
};
|
|
|
struct eth_device {
|
struct eth_device {
|
char name[NAMESIZE];
|
char name[NAMESIZE];
|
unsigned char enetaddr[6];
|
unsigned char enetaddr[6];
|
int iobase;
|
int iobase;
|
int state;
|
int state;
|
|
|
int (*init) (struct eth_device*, bd_t*);
|
int (*init) (struct eth_device*, bd_t*);
|
int (*send) (struct eth_device*, volatile void* pachet, int length);
|
int (*send) (struct eth_device*, volatile void* pachet, int length);
|
int (*recv) (struct eth_device*);
|
int (*recv) (struct eth_device*);
|
void (*halt) (struct eth_device*);
|
void (*halt) (struct eth_device*);
|
|
|
struct eth_device *next;
|
struct eth_device *next;
|
void *priv;
|
void *priv;
|
};
|
};
|
|
|
extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
|
extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
|
extern int eth_register(struct eth_device* dev);/* Register network device */
|
extern int eth_register(struct eth_device* dev);/* Register network device */
|
extern void eth_try_another(void); /* Change the device */
|
extern void eth_try_another(void); /* Change the device */
|
#endif
|
#endif
|
|
|
/**********************************************************************/
|
/**********************************************************************/
|
/*
|
/*
|
* Protocol headers.
|
* Protocol headers.
|
*/
|
*/
|
|
|
/*
|
/*
|
* Ethernet header
|
* Ethernet header
|
*/
|
*/
|
typedef struct {
|
typedef struct {
|
unsigned char et_dest[6]; /* Destination node */
|
unsigned char et_dest[6]; /* Destination node */
|
unsigned char et_src[6]; /* Source node */
|
unsigned char et_src[6]; /* Source node */
|
unsigned short et_protlen; /* Protocol or length */
|
unsigned short et_protlen; /* Protocol or length */
|
unsigned char et_dsap; /* 802 DSAP */
|
unsigned char et_dsap; /* 802 DSAP */
|
unsigned char et_ssap; /* 802 SSAP */
|
unsigned char et_ssap; /* 802 SSAP */
|
unsigned char et_ctl; /* 802 control */
|
unsigned char et_ctl; /* 802 control */
|
unsigned char et_snap1; /* SNAP */
|
unsigned char et_snap1; /* SNAP */
|
unsigned char et_snap2;
|
unsigned char et_snap2;
|
unsigned char et_snap3;
|
unsigned char et_snap3;
|
unsigned short et_prot; /* 802 protocol */
|
unsigned short et_prot; /* 802 protocol */
|
} Ethernet_t;
|
} Ethernet_t;
|
|
|
#define ETHER_HDR_SIZE 14 /* Ethernet header size */
|
#define ETHER_HDR_SIZE 14 /* Ethernet header size */
|
#define E802_HDR_SIZE 22 /* 802 ethernet header size */
|
#define E802_HDR_SIZE 22 /* 802 ethernet header size */
|
#define PROT_IP 0x0800 /* IP protocol */
|
#define PROT_IP 0x0800 /* IP protocol */
|
#define PROT_ARP 0x0806 /* IP ARP protocol */
|
#define PROT_ARP 0x0806 /* IP ARP protocol */
|
#define PROT_RARP 0x8035 /* IP ARP protocol */
|
#define PROT_RARP 0x8035 /* IP ARP protocol */
|
|
|
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
|
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
|
#define IPPROTO_UDP 17 /* User Datagram Protocol */
|
#define IPPROTO_UDP 17 /* User Datagram Protocol */
|
|
|
/*
|
/*
|
* Internet Protocol (IP) header.
|
* Internet Protocol (IP) header.
|
*/
|
*/
|
typedef struct {
|
typedef struct {
|
unsigned char ip_hl_v; /* header length and version */
|
unsigned char ip_hl_v; /* header length and version */
|
unsigned char ip_tos; /* type of service */
|
unsigned char ip_tos; /* type of service */
|
unsigned short ip_len; /* total length */
|
unsigned short ip_len; /* total length */
|
unsigned short ip_id; /* identification */
|
unsigned short ip_id; /* identification */
|
unsigned short ip_off; /* fragment offset field */
|
unsigned short ip_off; /* fragment offset field */
|
unsigned char ip_ttl; /* time to live */
|
unsigned char ip_ttl; /* time to live */
|
unsigned char ip_p; /* protocol */
|
unsigned char ip_p; /* protocol */
|
unsigned short ip_sum; /* checksum */
|
unsigned short ip_sum; /* checksum */
|
IPaddr_t ip_src; /* Source IP address */
|
IPaddr_t ip_src; /* Source IP address */
|
IPaddr_t ip_dst; /* Destination IP address */
|
IPaddr_t ip_dst; /* Destination IP address */
|
unsigned short udp_src; /* UDP source port */
|
unsigned short udp_src; /* UDP source port */
|
unsigned short udp_dst; /* UDP destination port */
|
unsigned short udp_dst; /* UDP destination port */
|
unsigned short udp_len; /* Length of UDP packet */
|
unsigned short udp_len; /* Length of UDP packet */
|
unsigned short udp_xsum; /* Checksum */
|
unsigned short udp_xsum; /* Checksum */
|
} IP_t;
|
} IP_t;
|
|
|
#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
|
#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
|
#define IP_HDR_SIZE (sizeof (IP_t))
|
#define IP_HDR_SIZE (sizeof (IP_t))
|
|
|
|
|
/*
|
/*
|
* Address Resolution Protocol (ARP) header.
|
* Address Resolution Protocol (ARP) header.
|
*/
|
*/
|
typedef struct
|
typedef struct
|
{
|
{
|
unsigned short ar_hrd; /* Format of hardware address*/
|
unsigned short ar_hrd; /* Format of hardware address*/
|
# define ARP_ETHER 1 /* Ethernet hardware address*/
|
# define ARP_ETHER 1 /* Ethernet hardware address*/
|
unsigned short ar_pro; /* Format of protocol address*/
|
unsigned short ar_pro; /* Format of protocol address*/
|
unsigned char ar_hln; /* Length of hardware address*/
|
unsigned char ar_hln; /* Length of hardware address*/
|
unsigned char ar_pln; /* Length of protocol address*/
|
unsigned char ar_pln; /* Length of protocol address*/
|
unsigned short ar_op; /* Operation */
|
unsigned short ar_op; /* Operation */
|
# define ARPOP_REQUEST 1 /* Request to resolve address */
|
# define ARPOP_REQUEST 1 /* Request to resolve address */
|
# define ARPOP_REPLY 2 /* Response to previous request */
|
# define ARPOP_REPLY 2 /* Response to previous request */
|
|
|
# define RARPOP_REQUEST 3 /* Request to resolve address */
|
# define RARPOP_REQUEST 3 /* Request to resolve address */
|
# define RARPOP_REPLY 4 /* Response to previous request */
|
# define RARPOP_REPLY 4 /* Response to previous request */
|
|
|
/*
|
/*
|
* The remaining fields are variable in size, according to
|
* The remaining fields are variable in size, according to
|
* the sizes above, and are defined as appropriate for
|
* the sizes above, and are defined as appropriate for
|
* specific hardware/protocol combinations.
|
* specific hardware/protocol combinations.
|
*/
|
*/
|
unsigned char ar_data[0];
|
unsigned char ar_data[0];
|
#if 0
|
#if 0
|
unsigned char ar_sha[]; /* Sender hardware address*/
|
unsigned char ar_sha[]; /* Sender hardware address*/
|
unsigned char ar_spa[]; /* Sender protocol address*/
|
unsigned char ar_spa[]; /* Sender protocol address*/
|
unsigned char ar_tha[]; /* Target hardware address*/
|
unsigned char ar_tha[]; /* Target hardware address*/
|
unsigned char ar_tpa[]; /* Target protocol address*/
|
unsigned char ar_tpa[]; /* Target protocol address*/
|
#endif /* 0 */
|
#endif /* 0 */
|
} ARP_t;
|
} ARP_t;
|
|
|
#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
|
#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
|
|
|
/*
|
/*
|
* ICMP stuff (just enough to handle (host) redirect messages)
|
* ICMP stuff (just enough to handle (host) redirect messages)
|
*/
|
*/
|
#define ICMP_REDIRECT 5 /* Redirect (change route) */
|
#define ICMP_REDIRECT 5 /* Redirect (change route) */
|
|
|
/* Codes for REDIRECT. */
|
/* Codes for REDIRECT. */
|
#define ICMP_REDIR_NET 0 /* Redirect Net */
|
#define ICMP_REDIR_NET 0 /* Redirect Net */
|
#define ICMP_REDIR_HOST 1 /* Redirect Host */
|
#define ICMP_REDIR_HOST 1 /* Redirect Host */
|
|
|
typedef struct icmphdr {
|
typedef struct icmphdr {
|
unsigned char type;
|
unsigned char type;
|
unsigned char code;
|
unsigned char code;
|
unsigned short checksum;
|
unsigned short checksum;
|
union {
|
union {
|
struct {
|
struct {
|
unsigned short id;
|
unsigned short id;
|
unsigned short sequence;
|
unsigned short sequence;
|
} echo;
|
} echo;
|
unsigned long gateway;
|
unsigned long gateway;
|
struct {
|
struct {
|
unsigned short __unused;
|
unsigned short __unused;
|
unsigned short mtu;
|
unsigned short mtu;
|
} frag;
|
} frag;
|
} un;
|
} un;
|
} ICMP_t;
|
} ICMP_t;
|
|
|
|
|
|
|
/*
|
/*
|
* Maximum packet size; used to allocate packet storage.
|
* Maximum packet size; used to allocate packet storage.
|
* TFTP packets can be 524 bytes + IP header + ethernet header.
|
* TFTP packets can be 524 bytes + IP header + ethernet header.
|
* Lets be conservative, and go for 38 * 16. (Must also be
|
* Lets be conservative, and go for 38 * 16. (Must also be
|
* a multiple of 32 bytes).
|
* a multiple of 32 bytes).
|
*/
|
*/
|
/*
|
/*
|
* AS.HARNOIS : Better to set PKTSIZE to maximum size because
|
* AS.HARNOIS : Better to set PKTSIZE to maximum size because
|
* traffic type is not always controlled
|
* traffic type is not always controlled
|
* maximum packet size = 1518
|
* maximum packet size = 1518
|
* maximum packet size and multiple of 32 bytes = 1536
|
* maximum packet size and multiple of 32 bytes = 1536
|
*/
|
*/
|
#define PKTSIZE 1518
|
#define PKTSIZE 1518
|
#define PKTSIZE_ALIGN 1536
|
#define PKTSIZE_ALIGN 1536
|
/*#define PKTSIZE 608*/
|
/*#define PKTSIZE 608*/
|
|
|
/*
|
/*
|
* Maximum receive ring size; that is, the number of packets
|
* Maximum receive ring size; that is, the number of packets
|
* we can buffer before overflow happens. Basically, this just
|
* we can buffer before overflow happens. Basically, this just
|
* needs to be enough to prevent a packet being discarded while
|
* needs to be enough to prevent a packet being discarded while
|
* we are processing the previous one.
|
* we are processing the previous one.
|
*/
|
*/
|
#define RINGSZ 4
|
#define RINGSZ 4
|
#define RINGSZ_LOG2 2
|
#define RINGSZ_LOG2 2
|
|
|
/**********************************************************************/
|
/**********************************************************************/
|
/*
|
/*
|
* Globals.
|
* Globals.
|
*/
|
*/
|
|
|
/* net.c */
|
/* net.c */
|
/** BOOTP EXTENTIONS **/
|
/** BOOTP EXTENTIONS **/
|
extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
|
extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
|
extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
|
extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
|
extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
|
extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
|
extern char NetOurNISDomain[32]; /* Our NIS domain */
|
extern char NetOurNISDomain[32]; /* Our NIS domain */
|
extern char NetOurHostName[32]; /* Our hostname */
|
extern char NetOurHostName[32]; /* Our hostname */
|
extern char NetOurRootPath[64]; /* Our root path */
|
extern char NetOurRootPath[64]; /* Our root path */
|
extern unsigned short NetBootFileSize; /* Our boot file size in blocks */
|
extern unsigned short NetBootFileSize; /* Our boot file size in blocks */
|
/** END OF BOOTP EXTENTIONS **/
|
/** END OF BOOTP EXTENTIONS **/
|
extern unsigned long NetBootFileXferSize; /* size of bootfile in bytes */
|
extern unsigned long NetBootFileXferSize; /* size of bootfile in bytes */
|
extern unsigned char NetOurEther[6]; /* Our ethernet address */
|
extern unsigned char NetOurEther[6]; /* Our ethernet address */
|
extern unsigned char NetServerEther[6]; /* Boot server enet address */
|
extern unsigned char NetServerEther[6]; /* Boot server enet address */
|
extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
|
extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
|
extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
|
extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
|
extern volatile unsigned char * NetTxPacket; /* THE transmit packet */
|
extern volatile unsigned char * NetTxPacket; /* THE transmit packet */
|
extern volatile unsigned char * NetRxPackets[PKTBUFSRX];/* Receive packets */
|
extern volatile unsigned char * NetRxPackets[PKTBUFSRX];/* Receive packets */
|
extern volatile unsigned char * NetRxPkt; /* Current receive packet */
|
extern volatile unsigned char * NetRxPkt; /* Current receive packet */
|
extern int NetRxPktLen; /* Current rx packet length */
|
extern int NetRxPktLen; /* Current rx packet length */
|
extern unsigned NetIPID; /* IP ID (counting) */
|
extern unsigned NetIPID; /* IP ID (counting) */
|
extern unsigned char NetBcastAddr[6]; /* Ethernet boardcast address */
|
extern unsigned char NetBcastAddr[6]; /* Ethernet boardcast address */
|
|
|
extern int NetState; /* Network loop state */
|
extern int NetState; /* Network loop state */
|
#define NETLOOP_CONTINUE 1
|
#define NETLOOP_CONTINUE 1
|
#define NETLOOP_RESTART 2
|
#define NETLOOP_RESTART 2
|
#define NETLOOP_SUCCESS 3
|
#define NETLOOP_SUCCESS 3
|
#define NETLOOP_FAIL 4
|
#define NETLOOP_FAIL 4
|
|
|
|
|
typedef enum { BOOTP, RARP, ARP, TFTP, DHCP } proto_t;
|
typedef enum { BOOTP, RARP, ARP, TFTP, DHCP } proto_t;
|
|
|
/* from net/net.c */
|
/* from net/net.c */
|
extern char BootFile[128]; /* Boot File name */
|
extern char BootFile[128]; /* Boot File name */
|
|
|
/* Initialize the network adapter */
|
/* Initialize the network adapter */
|
extern int NetLoop(proto_t protocol);
|
extern int NetLoop(proto_t protocol);
|
|
|
/* Shutdown adapters and cleanup */
|
/* Shutdown adapters and cleanup */
|
extern void NetStop(void);
|
extern void NetStop(void);
|
|
|
/* Load failed. Start again. */
|
/* Load failed. Start again. */
|
extern void NetStartAgain(void);
|
extern void NetStartAgain(void);
|
|
|
/* Copy ethernet address */
|
/* Copy ethernet address */
|
extern void NetCopyEther(volatile unsigned char *, unsigned char *);
|
extern void NetCopyEther(volatile unsigned char *, unsigned char *);
|
|
|
/* Set ethernet header */
|
/* Set ethernet header */
|
extern void NetSetEther(volatile unsigned char *, unsigned char *, unsigned long);
|
extern void NetSetEther(volatile unsigned char *, unsigned char *, unsigned long);
|
|
|
/* Set IP header */
|
/* Set IP header */
|
extern void NetSetIP(volatile unsigned char *, IPaddr_t, int, int, int);
|
extern void NetSetIP(volatile unsigned char *, IPaddr_t, int, int, int);
|
|
|
/* Checksum */
|
/* Checksum */
|
extern int NetCksumOk(unsigned char *, int); /* Return true if cksum OK */
|
extern int NetCksumOk(unsigned char *, int); /* Return true if cksum OK */
|
extern unsigned NetCksum(unsigned char *, int); /* Calculate the checksum */
|
extern unsigned NetCksum(unsigned char *, int); /* Calculate the checksum */
|
|
|
/* Set callbacks */
|
/* Set callbacks */
|
extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
|
extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
|
extern void NetSetTimeout(int, thand_f *); /* Set timeout handler */
|
extern void NetSetTimeout(int, thand_f *); /* Set timeout handler */
|
|
|
/* Transmit "NetTxPacket" */
|
/* Transmit "NetTxPacket" */
|
extern void NetSendPacket(volatile unsigned char *, int);
|
extern void NetSendPacket(volatile unsigned char *, int);
|
|
|
/* Processes a received packet */
|
/* Processes a received packet */
|
extern void NetReceive(volatile unsigned char *, int);
|
extern void NetReceive(volatile unsigned char *, int);
|
|
|
/* Print an IP address on the console */
|
/* Print an IP address on the console */
|
extern void print_IPaddr (IPaddr_t);
|
extern void print_IPaddr (IPaddr_t);
|
|
|
/* Convert an IP address to a string */
|
/* Convert an IP address to a string */
|
extern void ip_to_string (IPaddr_t x, char *s);
|
extern void ip_to_string (IPaddr_t x, char *s);
|
|
|
/* read an IP address from a environment variable */
|
/* read an IP address from a environment variable */
|
extern IPaddr_t getenv_IPaddr (char *);
|
extern IPaddr_t getenv_IPaddr (char *);
|
|
|
/* copy a filename (allow for "..." notation, limit length) */
|
/* copy a filename (allow for "..." notation, limit length) */
|
extern void copy_filename (unsigned char *dst, unsigned char *src, int size);
|
extern void copy_filename (unsigned char *dst, unsigned char *src, int size);
|
|
|
/* converts IP from unsigned long to string */
|
/* converts IP from unsigned long to string */
|
extern char *inet_ntoa(unsigned long);
|
extern char *inet_ntoa(unsigned long);
|
extern unsigned long inet_aton(const char *);
|
extern unsigned long inet_aton(const char *);
|
|
|
/**********************************************************************/
|
/**********************************************************************/
|
|
|
#endif /* __NET_H__ */
|
#endif /* __NET_H__ */
|
|
|
