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_CPM2)
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 #ifdef CONFIG_NET_MULTI
114 extern void eth_set_current(void); /* set nterface to ethcur var. */
116 extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
117 extern int eth_get_dev_index (void); /* get the device index */
118 extern void eth_set_enetaddr(int num, char* a); /* Set new MAC address */
120 extern int eth_init(bd_t *bis); /* Initialize the device */
121 extern int eth_send(volatile void *packet, int length); /* Send a packet */
122 extern int eth_rx(void); /* Check for received packets */
123 extern void eth_halt(void); /* stop SCC */
124 extern char *eth_get_name(void); /* get name of current device */
127 /**********************************************************************/
136 uchar et_dest[6]; /* Destination node */
137 uchar et_src[6]; /* Source node */
138 ushort et_protlen; /* Protocol or length */
139 uchar et_dsap; /* 802 DSAP */
140 uchar et_ssap; /* 802 SSAP */
141 uchar et_ctl; /* 802 control */
142 uchar et_snap1; /* SNAP */
145 ushort et_prot; /* 802 protocol */
148 #define ETHER_HDR_SIZE 14 /* Ethernet header size */
149 #define E802_HDR_SIZE 22 /* 802 ethernet header size */
155 uchar vet_dest[6]; /* Destination node */
156 uchar vet_src[6]; /* Source node */
157 ushort vet_vlan_type; /* PROT_VLAN */
158 ushort vet_tag; /* TAG of VLAN */
159 ushort vet_type; /* protocol type */
162 #define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
164 #define PROT_IP 0x0800 /* IP protocol */
165 #define PROT_ARP 0x0806 /* IP ARP protocol */
166 #define PROT_RARP 0x8035 /* IP ARP protocol */
167 #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
169 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
170 #define IPPROTO_UDP 17 /* User Datagram Protocol */
173 * Internet Protocol (IP) header.
176 uchar ip_hl_v; /* header length and version */
177 uchar ip_tos; /* type of service */
178 ushort ip_len; /* total length */
179 ushort ip_id; /* identification */
180 ushort ip_off; /* fragment offset field */
181 uchar ip_ttl; /* time to live */
182 uchar ip_p; /* protocol */
183 ushort ip_sum; /* checksum */
184 IPaddr_t ip_src; /* Source IP address */
185 IPaddr_t ip_dst; /* Destination IP address */
186 ushort udp_src; /* UDP source port */
187 ushort udp_dst; /* UDP destination port */
188 ushort udp_len; /* Length of UDP packet */
189 ushort udp_xsum; /* Checksum */
192 #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
193 #define IP_HDR_SIZE (sizeof (IP_t))
197 * Address Resolution Protocol (ARP) header.
201 ushort ar_hrd; /* Format of hardware address */
202 # define ARP_ETHER 1 /* Ethernet hardware address */
203 ushort ar_pro; /* Format of protocol address */
204 uchar ar_hln; /* Length of hardware address */
205 uchar ar_pln; /* Length of protocol address */
206 ushort ar_op; /* Operation */
207 # define ARPOP_REQUEST 1 /* Request to resolve address */
208 # define ARPOP_REPLY 2 /* Response to previous request */
210 # define RARPOP_REQUEST 3 /* Request to resolve address */
211 # define RARPOP_REPLY 4 /* Response to previous request */
214 * The remaining fields are variable in size, according to
215 * the sizes above, and are defined as appropriate for
216 * specific hardware/protocol combinations.
220 uchar ar_sha[]; /* Sender hardware address */
221 uchar ar_spa[]; /* Sender protocol address */
222 uchar ar_tha[]; /* Target hardware address */
223 uchar ar_tpa[]; /* Target protocol address */
227 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
230 * ICMP stuff (just enough to handle (host) redirect messages)
232 #define ICMP_ECHO_REPLY 0 /* Echo reply */
233 #define ICMP_REDIRECT 5 /* Redirect (change route) */
234 #define ICMP_ECHO_REQUEST 8 /* Echo request */
236 /* Codes for REDIRECT. */
237 #define ICMP_REDIR_NET 0 /* Redirect Net */
238 #define ICMP_REDIR_HOST 1 /* Redirect Host */
240 typedef struct icmphdr {
259 * Maximum packet size; used to allocate packet storage.
260 * TFTP packets can be 524 bytes + IP header + ethernet header.
261 * Lets be conservative, and go for 38 * 16. (Must also be
262 * a multiple of 32 bytes).
265 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
266 * traffic type is not always controlled
267 * maximum packet size = 1518
268 * maximum packet size and multiple of 32 bytes = 1536
271 #define PKTSIZE_ALIGN 1536
272 /*#define PKTSIZE 608*/
275 * Maximum receive ring size; that is, the number of packets
276 * we can buffer before overflow happens. Basically, this just
277 * needs to be enough to prevent a packet being discarded while
278 * we are processing the previous one.
281 #define RINGSZ_LOG2 2
283 /**********************************************************************/
289 * All variables of type IPaddr_t are stored in NETWORK byte order
294 /** BOOTP EXTENTIONS **/
295 extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
296 extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
297 extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
298 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
299 extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
301 extern char NetOurNISDomain[32]; /* Our NIS domain */
302 extern char NetOurHostName[32]; /* Our hostname */
303 extern char NetOurRootPath[64]; /* Our root path */
304 extern ushort NetBootFileSize; /* Our boot file size in blocks */
305 /** END OF BOOTP EXTENTIONS **/
306 extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
307 extern uchar NetOurEther[6]; /* Our ethernet address */
308 extern uchar NetServerEther[6]; /* Boot server enet address */
309 extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
310 extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
311 extern volatile uchar * NetTxPacket; /* THE transmit packet */
312 extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
313 extern volatile uchar * NetRxPkt; /* Current receive packet */
314 extern int NetRxPktLen; /* Current rx packet length */
315 extern unsigned NetIPID; /* IP ID (counting) */
316 extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
317 extern uchar NetEtherNullAddr[6];
319 #define VLAN_NONE 4095 /* untagged */
320 #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
321 extern ushort NetOurVLAN; /* Our VLAN */
322 extern ushort NetOurNativeVLAN; /* Our Native VLAN */
324 extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
325 extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
326 extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
328 extern int NetState; /* Network loop state */
329 #define NETLOOP_CONTINUE 1
330 #define NETLOOP_RESTART 2
331 #define NETLOOP_SUCCESS 3
332 #define NETLOOP_FAIL 4
334 #ifdef CONFIG_NET_MULTI
335 extern int NetRestartWrap; /* Tried all network devices */
338 typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP } proto_t;
341 extern char BootFile[128]; /* Boot File name */
343 #if (CONFIG_COMMANDS & CFG_CMD_PING)
344 extern IPaddr_t NetPingIP; /* the ip address to ping */
347 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
348 /* when CDP completes these hold the return values */
349 extern ushort CDPNativeVLAN;
350 extern ushort CDPApplianceVLAN;
353 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
354 extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
355 extern int NetTimeOffset; /* offset time from UTC */
358 /* Initialize the network adapter */
359 extern int NetLoop(proto_t);
361 /* Shutdown adapters and cleanup */
362 extern void NetStop(void);
364 /* Load failed. Start again. */
365 extern void NetStartAgain(void);
367 /* Get size of the ethernet header when we send */
368 extern int NetEthHdrSize(void);
370 /* Set ethernet header; returns the size of the header */
371 extern int NetSetEther(volatile uchar *, uchar *, uint);
374 extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
377 extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
378 extern uint NetCksum(uchar *, int); /* Calculate the checksum */
381 extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
382 extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
384 /* Transmit "NetTxPacket" */
385 extern void NetSendPacket(volatile uchar *, int);
387 /* Transmit UDP packet, performing ARP request if needed */
388 extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
390 /* Processes a received packet */
391 extern void NetReceive(volatile uchar *, int);
393 /* Print an IP address on the console */
394 extern void print_IPaddr (IPaddr_t);
397 * The following functions are a bit ugly, but necessary to deal with
398 * alignment restrictions on ARM.
400 * We're using inline functions, which had the smallest memory
401 * footprint in our tests.
403 /* return IP *in network byteorder* */
404 static inline IPaddr_t NetReadIP(void *from)
407 memcpy((void*)&ip, from, sizeof(ip));
411 /* return ulong *in network byteorder* */
412 static inline ulong NetReadLong(ulong *from)
415 memcpy((void*)&l, (void*)from, sizeof(l));
419 /* write IP *in network byteorder* */
420 static inline void NetWriteIP(void *to, IPaddr_t ip)
422 memcpy(to, (void*)&ip, sizeof(ip));
426 static inline void NetCopyIP(void *to, void *from)
428 memcpy(to, from, sizeof(IPaddr_t));
432 static inline void NetCopyLong(ulong *to, ulong *from)
434 memcpy((void*)to, (void*)from, sizeof(ulong));
437 /* Convert an IP address to a string */
438 extern void ip_to_string (IPaddr_t x, char *s);
440 /* Convert a string to ip address */
441 extern IPaddr_t string_to_ip(char *s);
443 /* Convert a VLAN id to a string */
444 extern void VLAN_to_string (ushort x, char *s);
446 /* Convert a string to a vlan id */
447 extern ushort string_to_VLAN(char *s);
449 /* read an IP address from a environment variable */
450 extern IPaddr_t getenv_IPaddr (char *);
452 /* read a VLAN id from an environment variable */
453 extern ushort getenv_VLAN(char *);
455 /* copy a filename (allow for "..." notation, limit length) */
456 extern void copy_filename (uchar *dst, uchar *src, int size);
458 /**********************************************************************/
460 #endif /* __NET_H__ */