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 #endif /* CONFIG_8xx */
19 #include <asm/byteorder.h> /* for nton* / ntoh* stuff */
23 * The number of receive packet buffers, and the required packet buffer
24 * alignment in memory.
28 #ifdef CONFIG_SYS_RX_ETH_BUFFER
29 # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
36 typedef ulong IPaddr_t;
40 * An incoming packet handler.
41 * @param pkt pointer to the application packet
42 * @param dport destination UDP port
43 * @param sip source IP address
44 * @param sport source UDP port
45 * @param len packet length
47 typedef void rxhand_f(uchar *pkt, unsigned dport,
48 IPaddr_t sip, unsigned sport,
52 * An incoming ICMP packet handler.
53 * @param type ICMP type
54 * @param code ICMP code
55 * @param dport destination UDP port
56 * @param sip source IP address
57 * @param sport source UDP port
58 * @param pkt pointer to the ICMP packet data
59 * @param len packet length
61 typedef void rxhand_icmp_f(unsigned type, unsigned code, unsigned dport,
62 IPaddr_t sip, unsigned sport, uchar *pkt, unsigned len);
65 * A timeout handler. Called after time interval has expired.
67 typedef void thand_f(void);
79 unsigned char enetaddr[6];
83 int (*init) (struct eth_device*, bd_t*);
84 int (*send) (struct eth_device*, volatile void* packet, int length);
85 int (*recv) (struct eth_device*);
86 void (*halt) (struct eth_device*);
87 #ifdef CONFIG_MCAST_TFTP
88 int (*mcast) (struct eth_device*, u32 ip, u8 set);
90 int (*write_hwaddr) (struct eth_device*);
91 struct eth_device *next;
95 extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
96 extern int eth_register(struct eth_device* dev);/* Register network device */
97 extern void eth_try_another(int first_restart); /* Change the device */
98 extern void eth_set_current(void); /* set nterface to ethcur var */
99 extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
100 extern struct eth_device *eth_get_dev_by_name(const char *devname);
101 extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
102 extern int eth_get_dev_index (void); /* get the device index */
103 extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
104 extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
105 extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
108 * Get the hardware address for an ethernet interface .
110 * base_name - base name for device (normally "eth")
111 * index - device index number (0 for first)
112 * enetaddr - returns 6 byte hardware address
114 * Return true if the address is valid.
116 extern int eth_getenv_enetaddr_by_index(const char *base_name, int index,
119 extern int usb_eth_initialize(bd_t *bi);
120 extern int eth_init(bd_t *bis); /* Initialize the device */
121 extern int eth_send(volatile void *packet, int length); /* Send a packet */
124 extern int eth_receive(volatile void *packet, int length); /* Receive a packet*/
126 extern int eth_rx(void); /* Check for received packets */
127 extern void eth_halt(void); /* stop SCC */
128 extern char *eth_get_name(void); /* get name of current device */
131 * Set the hardware address for an ethernet interface based on 'eth%daddr'
132 * environment variable (or just 'ethaddr' if eth_number is 0).
134 * base_name - base name for device (normally "eth")
135 * eth_number - value of %d (0 for first device of this type)
137 * 0 is success, non-zero is error status from driver.
139 int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
142 #ifdef CONFIG_MCAST_TFTP
143 int eth_mcast_join( IPaddr_t mcast_addr, u8 join);
144 u32 ether_crc (size_t len, unsigned char const *p);
148 /**********************************************************************/
157 uchar et_dest[6]; /* Destination node */
158 uchar et_src[6]; /* Source node */
159 ushort et_protlen; /* Protocol or length */
160 uchar et_dsap; /* 802 DSAP */
161 uchar et_ssap; /* 802 SSAP */
162 uchar et_ctl; /* 802 control */
163 uchar et_snap1; /* SNAP */
166 ushort et_prot; /* 802 protocol */
169 #define ETHER_HDR_SIZE 14 /* Ethernet header size */
170 #define E802_HDR_SIZE 22 /* 802 ethernet header size */
176 uchar vet_dest[6]; /* Destination node */
177 uchar vet_src[6]; /* Source node */
178 ushort vet_vlan_type; /* PROT_VLAN */
179 ushort vet_tag; /* TAG of VLAN */
180 ushort vet_type; /* protocol type */
183 #define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
185 #define PROT_IP 0x0800 /* IP protocol */
186 #define PROT_ARP 0x0806 /* IP ARP protocol */
187 #define PROT_RARP 0x8035 /* IP ARP protocol */
188 #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
190 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
191 #define IPPROTO_UDP 17 /* User Datagram Protocol */
194 * Internet Protocol (IP) header.
197 uchar ip_hl_v; /* header length and version */
198 uchar ip_tos; /* type of service */
199 ushort ip_len; /* total length */
200 ushort ip_id; /* identification */
201 ushort ip_off; /* fragment offset field */
202 uchar ip_ttl; /* time to live */
203 uchar ip_p; /* protocol */
204 ushort ip_sum; /* checksum */
205 IPaddr_t ip_src; /* Source IP address */
206 IPaddr_t ip_dst; /* Destination IP address */
207 ushort udp_src; /* UDP source port */
208 ushort udp_dst; /* UDP destination port */
209 ushort udp_len; /* Length of UDP packet */
210 ushort udp_xsum; /* Checksum */
213 #define IP_OFFS 0x1fff /* ip offset *= 8 */
214 #define IP_FLAGS 0xe000 /* first 3 bits */
215 #define IP_FLAGS_RES 0x8000 /* reserved */
216 #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */
217 #define IP_FLAGS_MFRAG 0x2000 /* more fragments */
219 #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
220 #define IP_HDR_SIZE (sizeof (IP_t))
224 * Address Resolution Protocol (ARP) header.
228 ushort ar_hrd; /* Format of hardware address */
229 # define ARP_ETHER 1 /* Ethernet hardware address */
230 ushort ar_pro; /* Format of protocol address */
231 uchar ar_hln; /* Length of hardware address */
232 uchar ar_pln; /* Length of protocol address */
233 ushort ar_op; /* Operation */
234 # define ARPOP_REQUEST 1 /* Request to resolve address */
235 # define ARPOP_REPLY 2 /* Response to previous request */
237 # define RARPOP_REQUEST 3 /* Request to resolve address */
238 # define RARPOP_REPLY 4 /* Response to previous request */
241 * The remaining fields are variable in size, according to
242 * the sizes above, and are defined as appropriate for
243 * specific hardware/protocol combinations.
247 uchar ar_sha[]; /* Sender hardware address */
248 uchar ar_spa[]; /* Sender protocol address */
249 uchar ar_tha[]; /* Target hardware address */
250 uchar ar_tpa[]; /* Target protocol address */
254 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
257 * ICMP stuff (just enough to handle (host) redirect messages)
259 #define ICMP_ECHO_REPLY 0 /* Echo reply */
260 #define ICMP_NOT_REACH 3 /* Detination unreachable */
261 #define ICMP_REDIRECT 5 /* Redirect (change route) */
262 #define ICMP_ECHO_REQUEST 8 /* Echo request */
264 /* Codes for REDIRECT. */
265 #define ICMP_REDIR_NET 0 /* Redirect Net */
266 #define ICMP_REDIR_HOST 1 /* Redirect Host */
268 /* Codes for NOT_REACH */
269 #define ICMP_NOT_REACH_PORT 3 /* Port unreachable */
271 typedef struct icmphdr {
291 * Maximum packet size; used to allocate packet storage.
292 * TFTP packets can be 524 bytes + IP header + ethernet header.
293 * Lets be conservative, and go for 38 * 16. (Must also be
294 * a multiple of 32 bytes).
297 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
298 * traffic type is not always controlled
299 * maximum packet size = 1518
300 * maximum packet size and multiple of 32 bytes = 1536
303 #define PKTSIZE_ALIGN 1536
304 /*#define PKTSIZE 608*/
307 * Maximum receive ring size; that is, the number of packets
308 * we can buffer before overflow happens. Basically, this just
309 * needs to be enough to prevent a packet being discarded while
310 * we are processing the previous one.
313 #define RINGSZ_LOG2 2
315 /**********************************************************************/
321 * All variables of type IPaddr_t are stored in NETWORK byte order
326 /** BOOTP EXTENTIONS **/
327 extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
328 extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
329 extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
330 #if defined(CONFIG_BOOTP_DNS2)
331 extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
333 extern char NetOurNISDomain[32]; /* Our NIS domain */
334 extern char NetOurHostName[32]; /* Our hostname */
335 extern char NetOurRootPath[64]; /* Our root path */
336 extern ushort NetBootFileSize; /* Our boot file size in blocks */
337 /** END OF BOOTP EXTENTIONS **/
338 extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
339 extern uchar NetOurEther[6]; /* Our ethernet address */
340 extern uchar NetServerEther[6]; /* Boot server enet address */
341 extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
342 extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
343 extern volatile uchar * NetTxPacket; /* THE transmit packet */
344 extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
345 extern volatile uchar * NetRxPacket; /* Current receive packet */
346 extern int NetRxPacketLen; /* Current rx packet length */
347 extern unsigned NetIPID; /* IP ID (counting) */
348 extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
349 extern uchar NetEtherNullAddr[6];
351 #define VLAN_NONE 4095 /* untagged */
352 #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
353 extern ushort NetOurVLAN; /* Our VLAN */
354 extern ushort NetOurNativeVLAN; /* Our Native VLAN */
356 extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
357 extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
358 extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
360 extern int NetState; /* Network loop state */
361 #define NETLOOP_CONTINUE 1
362 #define NETLOOP_RESTART 2
363 #define NETLOOP_SUCCESS 3
364 #define NETLOOP_FAIL 4
366 extern int NetRestartWrap; /* Tried all network devices */
369 BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP,
374 extern char BootFile[128]; /* Boot File name */
376 #if defined(CONFIG_CMD_DNS)
377 extern char *NetDNSResolve; /* The host to resolve */
378 extern char *NetDNSenvvar; /* the env var to put the ip into */
381 #if defined(CONFIG_CMD_PING)
382 extern IPaddr_t NetPingIP; /* the ip address to ping */
385 #if defined(CONFIG_CMD_CDP)
386 /* when CDP completes these hold the return values */
387 extern ushort CDPNativeVLAN;
388 extern ushort CDPApplianceVLAN;
391 #if defined(CONFIG_CMD_SNTP)
392 extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
393 extern int NetTimeOffset; /* offset time from UTC */
396 /* Initialize the network adapter */
397 extern int NetLoop(enum proto_t);
399 /* Shutdown adapters and cleanup */
400 extern void NetStop(void);
402 /* Load failed. Start again. */
403 extern void NetStartAgain(void);
405 /* Get size of the ethernet header when we send */
406 extern int NetEthHdrSize(void);
408 /* Set ethernet header; returns the size of the header */
409 extern int NetSetEther(volatile uchar *, uchar *, uint);
412 extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
415 extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
416 extern uint NetCksum(uchar *, int); /* Calculate the checksum */
419 extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
420 extern void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */
421 extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
423 /* Transmit "NetTxPacket" */
424 extern void NetSendPacket(volatile uchar *, int);
426 /* Transmit UDP packet, performing ARP request if needed */
427 extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
429 /* Processes a received packet */
430 extern void NetReceive(volatile uchar *, int);
433 * Check if autoload is enabled. If so, use either NFS or TFTP to download
436 void net_auto_load(void);
439 * The following functions are a bit ugly, but necessary to deal with
440 * alignment restrictions on ARM.
442 * We're using inline functions, which had the smallest memory
443 * footprint in our tests.
445 /* return IP *in network byteorder* */
446 static inline IPaddr_t NetReadIP(volatile void *from)
449 memcpy((void*)&ip, (void*)from, sizeof(ip));
453 /* return ulong *in network byteorder* */
454 static inline ulong NetReadLong(ulong *from)
457 memcpy((void*)&l, (void*)from, sizeof(l));
461 /* write IP *in network byteorder* */
462 static inline void NetWriteIP(void *to, IPaddr_t ip)
464 memcpy(to, (void*)&ip, sizeof(ip));
468 static inline void NetCopyIP(volatile void *to, void *from)
470 memcpy((void*)to, from, sizeof(IPaddr_t));
474 static inline void NetCopyLong(ulong *to, ulong *from)
476 memcpy((void*)to, (void*)from, sizeof(ulong));
480 * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
481 * @addr: Pointer to a six-byte array containing the Ethernet address
483 * Return true if the address is all zeroes.
485 static inline int is_zero_ether_addr(const u8 *addr)
487 return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
491 * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
492 * @addr: Pointer to a six-byte array containing the Ethernet address
494 * Return true if the address is a multicast address.
495 * By definition the broadcast address is also a multicast address.
497 static inline int is_multicast_ether_addr(const u8 *addr)
499 return (0x01 & addr[0]);
503 * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
504 * @addr: Pointer to a six-byte array containing the Ethernet address
506 * Return true if the address is the broadcast address.
508 static inline int is_broadcast_ether_addr(const u8 *addr)
510 return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
514 * is_valid_ether_addr - Determine if the given Ethernet address is valid
515 * @addr: Pointer to a six-byte array containing the Ethernet address
517 * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
518 * a multicast address, and is not FF:FF:FF:FF:FF:FF.
520 * Return true if the address is valid.
522 static inline int is_valid_ether_addr(const u8 *addr)
524 /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
525 * explicitly check for it here. */
526 return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
529 /* Convert an IP address to a string */
530 extern void ip_to_string (IPaddr_t x, char *s);
532 /* Convert a string to ip address */
533 extern IPaddr_t string_to_ip(const char *s);
535 /* Convert a VLAN id to a string */
536 extern void VLAN_to_string (ushort x, char *s);
538 /* Convert a string to a vlan id */
539 extern ushort string_to_VLAN(const char *s);
541 /* read a VLAN id from an environment variable */
542 extern ushort getenv_VLAN(char *);
544 /* copy a filename (allow for "..." notation, limit length) */
545 extern void copy_filename (char *dst, const char *src, int size);
547 /* get a random source port */
548 extern unsigned int random_port(void);
550 /**********************************************************************/
552 #endif /* __NET_H__ */