2 * LiMon Monitor (LiMon) - Network.
4 * Copyright 1994 - 2000 Neil Russell.
9 * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
15 #if defined(CONFIG_8xx)
17 # if !defined(CONFIG_NET_MULTI)
18 # if defined(FEC_ENET) || defined(SCC_ENET)
19 # define CONFIG_NET_MULTI
22 #endif /* CONFIG_8xx */
24 #if defined(CONFIG_MPC5XXX)
25 # if !defined(CONFIG_NET_MULTI)
26 # if defined(CONFIG_MPC5XXX_FEC)
27 # define CONFIG_NET_MULTI
30 #endif /* CONFIG_MPC5XXX */
32 #if !defined(CONFIG_NET_MULTI) && (defined(CONFIG_8260) || defined(CONFIG_MPC8560))
34 #if defined(CONFIG_ETHER_ON_FCC)
35 #if defined(CONFIG_ETHER_ON_SCC)
36 #error "Ethernet not correctly defined"
37 #endif /* CONFIG_ETHER_ON_SCC */
38 #define CONFIG_NET_MULTI
39 #if (CONFIG_ETHER_INDEX == 1)
40 #define CONFIG_ETHER_ON_FCC1
41 # define CFG_CMXFCR_MASK1 CFG_CMXFCR_MASK
42 # define CFG_CMXFCR_VALUE1 CFG_CMXFCR_VALUE
43 #elif (CONFIG_ETHER_INDEX == 2)
44 #define CONFIG_ETHER_ON_FCC2
45 # define CFG_CMXFCR_MASK2 CFG_CMXFCR_MASK
46 # define CFG_CMXFCR_VALUE2 CFG_CMXFCR_VALUE
47 #elif (CONFIG_ETHER_INDEX == 3)
48 #define CONFIG_ETHER_ON_FCC3
49 # define CFG_CMXFCR_MASK3 CFG_CMXFCR_MASK
50 # define CFG_CMXFCR_VALUE3 CFG_CMXFCR_VALUE
51 #endif /* CONFIG_ETHER_INDEX */
52 #endif /* CONFIG_ETHER_ON_FCC */
53 #endif /* !CONFIG_NET_MULTI && CONFIG_8260 */
55 #include <asm/byteorder.h> /* for nton* / ntoh* stuff */
59 * The number of receive packet buffers, and the required packet buffer
60 * alignment in memory.
64 #ifdef CFG_RX_ETH_BUFFER
65 # define PKTBUFSRX CFG_RX_ETH_BUFFER
72 typedef ulong IPaddr_t;
76 * The current receive packet handler. Called with a pointer to the
77 * application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
78 * All other packets are dealt with without calling the handler.
80 typedef void rxhand_f(uchar *, unsigned, unsigned, unsigned);
83 * A timeout handler. Called after time interval has expired.
85 typedef void thand_f(void);
97 unsigned char enetaddr[6];
101 int (*init) (struct eth_device*, bd_t*);
102 int (*send) (struct eth_device*, volatile void* pachet, int length);
103 int (*recv) (struct eth_device*);
104 void (*halt) (struct eth_device*);
106 struct eth_device *next;
110 extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
111 extern int eth_register(struct eth_device* dev);/* Register network device */
112 extern void eth_try_another(int first_restart); /* Change the device */
113 extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
114 extern void eth_set_enetaddr(int num, char* a); /* Set new MAC address */
116 extern int eth_init(bd_t *bis); /* Initialize the device */
117 extern int eth_send(volatile void *packet, int length); /* Send a packet */
118 extern int eth_rx(void); /* Check for received packets */
119 extern void eth_halt(void); /* stop SCC */
122 /**********************************************************************/
131 uchar et_dest[6]; /* Destination node */
132 uchar et_src[6]; /* Source node */
133 ushort et_protlen; /* Protocol or length */
134 uchar et_dsap; /* 802 DSAP */
135 uchar et_ssap; /* 802 SSAP */
136 uchar et_ctl; /* 802 control */
137 uchar et_snap1; /* SNAP */
140 ushort et_prot; /* 802 protocol */
143 #define ETHER_HDR_SIZE 14 /* Ethernet header size */
144 #define E802_HDR_SIZE 22 /* 802 ethernet header size */
145 #define PROT_IP 0x0800 /* IP protocol */
146 #define PROT_ARP 0x0806 /* IP ARP protocol */
147 #define PROT_RARP 0x8035 /* IP ARP protocol */
149 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
150 #define IPPROTO_UDP 17 /* User Datagram Protocol */
153 * Internet Protocol (IP) header.
156 uchar ip_hl_v; /* header length and version */
157 uchar ip_tos; /* type of service */
158 ushort ip_len; /* total length */
159 ushort ip_id; /* identification */
160 ushort ip_off; /* fragment offset field */
161 uchar ip_ttl; /* time to live */
162 uchar ip_p; /* protocol */
163 ushort ip_sum; /* checksum */
164 IPaddr_t ip_src; /* Source IP address */
165 IPaddr_t ip_dst; /* Destination IP address */
166 ushort udp_src; /* UDP source port */
167 ushort udp_dst; /* UDP destination port */
168 ushort udp_len; /* Length of UDP packet */
169 ushort udp_xsum; /* Checksum */
172 #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
173 #define IP_HDR_SIZE (sizeof (IP_t))
177 * Address Resolution Protocol (ARP) header.
181 ushort ar_hrd; /* Format of hardware address */
182 # define ARP_ETHER 1 /* Ethernet hardware address */
183 ushort ar_pro; /* Format of protocol address */
184 uchar ar_hln; /* Length of hardware address */
185 uchar ar_pln; /* Length of protocol address */
186 ushort ar_op; /* Operation */
187 # define ARPOP_REQUEST 1 /* Request to resolve address */
188 # define ARPOP_REPLY 2 /* Response to previous request */
190 # define RARPOP_REQUEST 3 /* Request to resolve address */
191 # define RARPOP_REPLY 4 /* Response to previous request */
194 * The remaining fields are variable in size, according to
195 * the sizes above, and are defined as appropriate for
196 * specific hardware/protocol combinations.
200 uchar ar_sha[]; /* Sender hardware address */
201 uchar ar_spa[]; /* Sender protocol address */
202 uchar ar_tha[]; /* Target hardware address */
203 uchar ar_tpa[]; /* Target protocol address */
207 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
210 * ICMP stuff (just enough to handle (host) redirect messages)
212 #define ICMP_ECHO_REPLY 0 /* Echo reply */
213 #define ICMP_REDIRECT 5 /* Redirect (change route) */
214 #define ICMP_ECHO_REQUEST 8 /* Echo request */
216 /* Codes for REDIRECT. */
217 #define ICMP_REDIR_NET 0 /* Redirect Net */
218 #define ICMP_REDIR_HOST 1 /* Redirect Host */
220 typedef struct icmphdr {
239 * Maximum packet size; used to allocate packet storage.
240 * TFTP packets can be 524 bytes + IP header + ethernet header.
241 * Lets be conservative, and go for 38 * 16. (Must also be
242 * a multiple of 32 bytes).
245 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
246 * traffic type is not always controlled
247 * maximum packet size = 1518
248 * maximum packet size and multiple of 32 bytes = 1536
251 #define PKTSIZE_ALIGN 1536
252 /*#define PKTSIZE 608*/
255 * Maximum receive ring size; that is, the number of packets
256 * we can buffer before overflow happens. Basically, this just
257 * needs to be enough to prevent a packet being discarded while
258 * we are processing the previous one.
261 #define RINGSZ_LOG2 2
263 /**********************************************************************/
269 * All variables of type IPaddr_t are stored in NETWORK byte order
274 /** BOOTP EXTENTIONS **/
275 extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
276 extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
277 extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
278 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
279 extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
281 extern char NetOurNISDomain[32]; /* Our NIS domain */
282 extern char NetOurHostName[32]; /* Our hostname */
283 extern char NetOurRootPath[64]; /* Our root path */
284 extern ushort NetBootFileSize; /* Our boot file size in blocks */
285 /** END OF BOOTP EXTENTIONS **/
286 extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
287 extern uchar NetOurEther[6]; /* Our ethernet address */
288 extern uchar NetServerEther[6]; /* Boot server enet address */
289 extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
290 extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
291 extern volatile uchar * NetTxPacket; /* THE transmit packet */
292 extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
293 extern volatile uchar * NetRxPkt; /* Current receive packet */
294 extern int NetRxPktLen; /* Current rx packet length */
295 extern unsigned NetIPID; /* IP ID (counting) */
296 extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
298 extern int NetState; /* Network loop state */
299 #define NETLOOP_CONTINUE 1
300 #define NETLOOP_RESTART 2
301 #define NETLOOP_SUCCESS 3
302 #define NETLOOP_FAIL 4
304 #ifdef CONFIG_NET_MULTI
305 extern int NetRestartWrap; /* Tried all network devices */
308 typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS } proto_t;
311 extern char BootFile[128]; /* Boot File name */
313 #if (CONFIG_COMMANDS & CFG_CMD_PING)
314 extern IPaddr_t NetPingIP; /* the ip address to ping */
317 /* Initialize the network adapter */
318 extern int NetLoop(proto_t);
320 /* Shutdown adapters and cleanup */
321 extern void NetStop(void);
323 /* Load failed. Start again. */
324 extern void NetStartAgain(void);
326 /* Set ethernet header */
327 extern void NetSetEther(volatile uchar *, uchar *, uint);
330 extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
333 extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
334 extern uint NetCksum(uchar *, int); /* Calculate the checksum */
337 extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
338 extern void NetSetTimeout(int, thand_f *); /* Set timeout handler */
340 /* Transmit "NetTxPacket" */
341 extern void NetSendPacket(volatile uchar *, int);
343 /* Transmit UDP packet, performing ARP request if needed */
344 extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
346 /* Processes a received packet */
347 extern void NetReceive(volatile uchar *, int);
349 /* Print an IP address on the console */
350 extern void print_IPaddr (IPaddr_t);
353 * The following functions are a bit ugly, but necessary to deal with
354 * alignment restrictions on ARM.
356 * We're using inline functions, which had the smallest memory
357 * footprint in our tests.
359 /* return IP *in network byteorder* */
360 static inline IPaddr_t NetReadIP(void *from)
363 memcpy((void*)&ip, from, sizeof(ip));
367 /* return ulong *in network byteorder* */
368 static inline ulong NetReadLong(ulong *from)
371 memcpy((void*)&l, (void*)from, sizeof(l));
375 /* write IP *in network byteorder* */
376 static inline void NetWriteIP(void *to, IPaddr_t ip)
378 memcpy(to, (void*)&ip, sizeof(ip));
382 static inline void NetCopyIP(void *to, void *from)
384 memcpy(to, from, sizeof(IPaddr_t));
388 static inline void NetCopyLong(ulong *to, ulong *from)
390 memcpy((void*)to, (void*)from, sizeof(ulong));
393 /* Convert an IP address to a string */
394 extern void ip_to_string (IPaddr_t x, char *s);
396 /* Convert a string to ip address */
397 extern IPaddr_t string_to_ip(char *s);
399 /* read an IP address from a environment variable */
400 extern IPaddr_t getenv_IPaddr (char *);
402 /* copy a filename (allow for "..." notation, limit length) */
403 extern void copy_filename (uchar *dst, uchar *src, int size);
405 /**********************************************************************/
407 #endif /* __NET_H__ */