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 CONFIG_SYS_CMXFCR_MASK1 CONFIG_SYS_CMXFCR_MASK
42 # define CONFIG_SYS_CMXFCR_VALUE1 CONFIG_SYS_CMXFCR_VALUE
43 #elif (CONFIG_ETHER_INDEX == 2)
44 #define CONFIG_ETHER_ON_FCC2
45 # define CONFIG_SYS_CMXFCR_MASK2 CONFIG_SYS_CMXFCR_MASK
46 # define CONFIG_SYS_CMXFCR_VALUE2 CONFIG_SYS_CMXFCR_VALUE
47 #elif (CONFIG_ETHER_INDEX == 3)
48 #define CONFIG_ETHER_ON_FCC3
49 # define CONFIG_SYS_CMXFCR_MASK3 CONFIG_SYS_CMXFCR_MASK
50 # define CONFIG_SYS_CMXFCR_VALUE3 CONFIG_SYS_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 CONFIG_SYS_RX_ETH_BUFFER
65 # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER
72 typedef ulong IPaddr_t;
76 * An incoming packet handler.
77 * @param pkt pointer to the application packet
78 * @param dport destination UDP port
79 * @param sip source IP address
80 * @param sport source UDP port
81 * @param len packet length
83 typedef void rxhand_f(uchar *pkt, unsigned dport,
84 IPaddr_t sip, unsigned sport,
88 * A timeout handler. Called after time interval has expired.
90 typedef void thand_f(void);
102 unsigned char enetaddr[6];
106 int (*init) (struct eth_device*, bd_t*);
107 int (*send) (struct eth_device*, volatile void* packet, int length);
108 int (*recv) (struct eth_device*);
109 void (*halt) (struct eth_device*);
110 #ifdef CONFIG_MCAST_TFTP
111 int (*mcast) (struct eth_device*, u32 ip, u8 set);
113 int (*write_hwaddr) (struct eth_device*);
114 struct eth_device *next;
118 extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
119 extern int eth_register(struct eth_device* dev);/* Register network device */
120 extern void eth_try_another(int first_restart); /* Change the device */
121 #ifdef CONFIG_NET_MULTI
122 extern void eth_set_current(void); /* set nterface to ethcur var */
124 extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
125 extern struct eth_device *eth_get_dev_by_name(const char *devname);
126 extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
127 extern int eth_get_dev_index (void); /* get the device index */
128 extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
129 extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
130 extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
131 extern int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr);
133 extern int usb_eth_initialize(bd_t *bi);
134 extern int eth_init(bd_t *bis); /* Initialize the device */
135 extern int eth_send(volatile void *packet, int length); /* Send a packet */
138 extern int eth_receive(volatile void *packet, int length); /* Receive a packet*/
140 extern int eth_rx(void); /* Check for received packets */
141 extern void eth_halt(void); /* stop SCC */
142 extern char *eth_get_name(void); /* get name of current device */
144 #ifdef CONFIG_MCAST_TFTP
145 int eth_mcast_join( IPaddr_t mcast_addr, u8 join);
146 u32 ether_crc (size_t len, unsigned char const *p);
150 /**********************************************************************/
159 uchar et_dest[6]; /* Destination node */
160 uchar et_src[6]; /* Source node */
161 ushort et_protlen; /* Protocol or length */
162 uchar et_dsap; /* 802 DSAP */
163 uchar et_ssap; /* 802 SSAP */
164 uchar et_ctl; /* 802 control */
165 uchar et_snap1; /* SNAP */
168 ushort et_prot; /* 802 protocol */
171 #define ETHER_HDR_SIZE 14 /* Ethernet header size */
172 #define E802_HDR_SIZE 22 /* 802 ethernet header size */
178 uchar vet_dest[6]; /* Destination node */
179 uchar vet_src[6]; /* Source node */
180 ushort vet_vlan_type; /* PROT_VLAN */
181 ushort vet_tag; /* TAG of VLAN */
182 ushort vet_type; /* protocol type */
185 #define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
187 #define PROT_IP 0x0800 /* IP protocol */
188 #define PROT_ARP 0x0806 /* IP ARP protocol */
189 #define PROT_RARP 0x8035 /* IP ARP protocol */
190 #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
192 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
193 #define IPPROTO_UDP 17 /* User Datagram Protocol */
196 * Internet Protocol (IP) header.
199 uchar ip_hl_v; /* header length and version */
200 uchar ip_tos; /* type of service */
201 ushort ip_len; /* total length */
202 ushort ip_id; /* identification */
203 ushort ip_off; /* fragment offset field */
204 uchar ip_ttl; /* time to live */
205 uchar ip_p; /* protocol */
206 ushort ip_sum; /* checksum */
207 IPaddr_t ip_src; /* Source IP address */
208 IPaddr_t ip_dst; /* Destination IP address */
209 ushort udp_src; /* UDP source port */
210 ushort udp_dst; /* UDP destination port */
211 ushort udp_len; /* Length of UDP packet */
212 ushort udp_xsum; /* Checksum */
215 #define IP_OFFS 0x1fff /* ip offset *= 8 */
216 #define IP_FLAGS 0xe000 /* first 3 bits */
217 #define IP_FLAGS_RES 0x8000 /* reserved */
218 #define IP_FLAGS_DFRAG 0x4000 /* don't fragments */
219 #define IP_FLAGS_MFRAG 0x2000 /* more fragments */
221 #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
222 #define IP_HDR_SIZE (sizeof (IP_t))
226 * Address Resolution Protocol (ARP) header.
230 ushort ar_hrd; /* Format of hardware address */
231 # define ARP_ETHER 1 /* Ethernet hardware address */
232 ushort ar_pro; /* Format of protocol address */
233 uchar ar_hln; /* Length of hardware address */
234 uchar ar_pln; /* Length of protocol address */
235 ushort ar_op; /* Operation */
236 # define ARPOP_REQUEST 1 /* Request to resolve address */
237 # define ARPOP_REPLY 2 /* Response to previous request */
239 # define RARPOP_REQUEST 3 /* Request to resolve address */
240 # define RARPOP_REPLY 4 /* Response to previous request */
243 * The remaining fields are variable in size, according to
244 * the sizes above, and are defined as appropriate for
245 * specific hardware/protocol combinations.
249 uchar ar_sha[]; /* Sender hardware address */
250 uchar ar_spa[]; /* Sender protocol address */
251 uchar ar_tha[]; /* Target hardware address */
252 uchar ar_tpa[]; /* Target protocol address */
256 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
259 * ICMP stuff (just enough to handle (host) redirect messages)
261 #define ICMP_ECHO_REPLY 0 /* Echo reply */
262 #define ICMP_REDIRECT 5 /* Redirect (change route) */
263 #define ICMP_ECHO_REQUEST 8 /* Echo request */
265 /* Codes for REDIRECT. */
266 #define ICMP_REDIR_NET 0 /* Redirect Net */
267 #define ICMP_REDIR_HOST 1 /* Redirect Host */
269 typedef struct icmphdr {
288 * Maximum packet size; used to allocate packet storage.
289 * TFTP packets can be 524 bytes + IP header + ethernet header.
290 * Lets be conservative, and go for 38 * 16. (Must also be
291 * a multiple of 32 bytes).
294 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
295 * traffic type is not always controlled
296 * maximum packet size = 1518
297 * maximum packet size and multiple of 32 bytes = 1536
300 #define PKTSIZE_ALIGN 1536
301 /*#define PKTSIZE 608*/
304 * Maximum receive ring size; that is, the number of packets
305 * we can buffer before overflow happens. Basically, this just
306 * needs to be enough to prevent a packet being discarded while
307 * we are processing the previous one.
310 #define RINGSZ_LOG2 2
312 /**********************************************************************/
318 * All variables of type IPaddr_t are stored in NETWORK byte order
323 /** BOOTP EXTENTIONS **/
324 extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
325 extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
326 extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
327 #if defined(CONFIG_BOOTP_DNS2)
328 extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
330 extern char NetOurNISDomain[32]; /* Our NIS domain */
331 extern char NetOurHostName[32]; /* Our hostname */
332 extern char NetOurRootPath[64]; /* Our root path */
333 extern ushort NetBootFileSize; /* Our boot file size in blocks */
334 /** END OF BOOTP EXTENTIONS **/
335 extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
336 extern uchar NetOurEther[6]; /* Our ethernet address */
337 extern uchar NetServerEther[6]; /* Boot server enet address */
338 extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
339 extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
340 extern volatile uchar * NetTxPacket; /* THE transmit packet */
341 extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
342 extern volatile uchar * NetRxPacket; /* Current receive packet */
343 extern int NetRxPacketLen; /* Current rx packet length */
344 extern unsigned NetIPID; /* IP ID (counting) */
345 extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
346 extern uchar NetEtherNullAddr[6];
348 #define VLAN_NONE 4095 /* untagged */
349 #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
350 extern ushort NetOurVLAN; /* Our VLAN */
351 extern ushort NetOurNativeVLAN; /* Our Native VLAN */
353 extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
354 extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
355 extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
357 extern int NetState; /* Network loop state */
358 #define NETLOOP_CONTINUE 1
359 #define NETLOOP_RESTART 2
360 #define NETLOOP_SUCCESS 3
361 #define NETLOOP_FAIL 4
363 #ifdef CONFIG_NET_MULTI
364 extern int NetRestartWrap; /* Tried all network devices */
367 typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP } proto_t;
370 extern char BootFile[128]; /* Boot File name */
372 #if defined(CONFIG_CMD_DNS)
373 extern char *NetDNSResolve; /* The host to resolve */
374 extern char *NetDNSenvvar; /* the env var to put the ip into */
377 #if defined(CONFIG_CMD_PING)
378 extern IPaddr_t NetPingIP; /* the ip address to ping */
381 #if defined(CONFIG_CMD_CDP)
382 /* when CDP completes these hold the return values */
383 extern ushort CDPNativeVLAN;
384 extern ushort CDPApplianceVLAN;
387 #if defined(CONFIG_CMD_SNTP)
388 extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
389 extern int NetTimeOffset; /* offset time from UTC */
392 /* Initialize the network adapter */
393 extern int NetLoop(proto_t);
395 /* Shutdown adapters and cleanup */
396 extern void NetStop(void);
398 /* Load failed. Start again. */
399 extern void NetStartAgain(void);
401 /* Get size of the ethernet header when we send */
402 extern int NetEthHdrSize(void);
404 /* Set ethernet header; returns the size of the header */
405 extern int NetSetEther(volatile uchar *, uchar *, uint);
408 extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
411 extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
412 extern uint NetCksum(uchar *, int); /* Calculate the checksum */
415 extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
416 extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
418 /* Transmit "NetTxPacket" */
419 extern void NetSendPacket(volatile uchar *, int);
421 /* Transmit UDP packet, performing ARP request if needed */
422 extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
424 /* Processes a received packet */
425 extern void NetReceive(volatile uchar *, int);
428 * The following functions are a bit ugly, but necessary to deal with
429 * alignment restrictions on ARM.
431 * We're using inline functions, which had the smallest memory
432 * footprint in our tests.
434 /* return IP *in network byteorder* */
435 static inline IPaddr_t NetReadIP(volatile void *from)
438 memcpy((void*)&ip, (void*)from, sizeof(ip));
442 /* return ulong *in network byteorder* */
443 static inline ulong NetReadLong(ulong *from)
446 memcpy((void*)&l, (void*)from, sizeof(l));
450 /* write IP *in network byteorder* */
451 static inline void NetWriteIP(void *to, IPaddr_t ip)
453 memcpy(to, (void*)&ip, sizeof(ip));
457 static inline void NetCopyIP(volatile void *to, void *from)
459 memcpy((void*)to, from, sizeof(IPaddr_t));
463 static inline void NetCopyLong(ulong *to, ulong *from)
465 memcpy((void*)to, (void*)from, sizeof(ulong));
469 * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
470 * @addr: Pointer to a six-byte array containing the Ethernet address
472 * Return true if the address is all zeroes.
474 static inline int is_zero_ether_addr(const u8 *addr)
476 return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
480 * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
481 * @addr: Pointer to a six-byte array containing the Ethernet address
483 * Return true if the address is a multicast address.
484 * By definition the broadcast address is also a multicast address.
486 static inline int is_multicast_ether_addr(const u8 *addr)
488 return (0x01 & addr[0]);
492 * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
493 * @addr: Pointer to a six-byte array containing the Ethernet address
495 * Return true if the address is the broadcast address.
497 static inline int is_broadcast_ether_addr(const u8 *addr)
499 return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
503 * is_valid_ether_addr - Determine if the given Ethernet address is valid
504 * @addr: Pointer to a six-byte array containing the Ethernet address
506 * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
507 * a multicast address, and is not FF:FF:FF:FF:FF:FF.
509 * Return true if the address is valid.
511 static inline int is_valid_ether_addr(const u8 *addr)
513 /* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
514 * explicitly check for it here. */
515 return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
518 /* Convert an IP address to a string */
519 extern void ip_to_string (IPaddr_t x, char *s);
521 /* Convert a string to ip address */
522 extern IPaddr_t string_to_ip(const char *s);
524 /* Convert a VLAN id to a string */
525 extern void VLAN_to_string (ushort x, char *s);
527 /* Convert a string to a vlan id */
528 extern ushort string_to_VLAN(const char *s);
530 /* read a VLAN id from an environment variable */
531 extern ushort getenv_VLAN(char *);
533 /* copy a filename (allow for "..." notation, limit length) */
534 extern void copy_filename (char *dst, const char *src, int size);
536 /* get a random source port */
537 extern unsigned int random_port(void);
539 /**********************************************************************/
541 #endif /* __NET_H__ */