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* packet, int length);
103 int (*recv) (struct eth_device*);
104 void (*halt) (struct eth_device*);
105 #ifdef CONFIG_MCAST_TFTP
106 int (*mcast) (struct eth_device*, u32 ip, u8 set);
108 struct eth_device *next;
112 extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
113 extern int eth_register(struct eth_device* dev);/* Register network device */
114 extern void eth_try_another(int first_restart); /* Change the device */
115 #ifdef CONFIG_NET_MULTI
116 extern void eth_set_current(void); /* set nterface to ethcur var. */
118 extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
119 extern struct eth_device *eth_get_dev_by_name(char *devname); /* get device */
120 extern int eth_get_dev_index (void); /* get the device index */
121 extern void eth_set_enetaddr(int num, char* a); /* Set new MAC address */
123 extern int eth_init(bd_t *bis); /* Initialize the device */
124 extern int eth_send(volatile void *packet, int length); /* Send a packet */
126 extern int eth_receive(volatile void *packet, int length); /* Receive a packet */
128 extern int eth_rx(void); /* Check for received packets */
129 extern void eth_halt(void); /* stop SCC */
130 extern char *eth_get_name(void); /* get name of current device */
132 #ifdef CONFIG_MCAST_TFTP
133 int eth_mcast_join( IPaddr_t mcast_addr, u8 join);
134 u32 ether_crc (size_t len, unsigned char const *p);
138 /**********************************************************************/
147 uchar et_dest[6]; /* Destination node */
148 uchar et_src[6]; /* Source node */
149 ushort et_protlen; /* Protocol or length */
150 uchar et_dsap; /* 802 DSAP */
151 uchar et_ssap; /* 802 SSAP */
152 uchar et_ctl; /* 802 control */
153 uchar et_snap1; /* SNAP */
156 ushort et_prot; /* 802 protocol */
159 #define ETHER_HDR_SIZE 14 /* Ethernet header size */
160 #define E802_HDR_SIZE 22 /* 802 ethernet header size */
166 uchar vet_dest[6]; /* Destination node */
167 uchar vet_src[6]; /* Source node */
168 ushort vet_vlan_type; /* PROT_VLAN */
169 ushort vet_tag; /* TAG of VLAN */
170 ushort vet_type; /* protocol type */
173 #define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
175 #define PROT_IP 0x0800 /* IP protocol */
176 #define PROT_ARP 0x0806 /* IP ARP protocol */
177 #define PROT_RARP 0x8035 /* IP ARP protocol */
178 #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
180 #define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
181 #define IPPROTO_UDP 17 /* User Datagram Protocol */
184 * Internet Protocol (IP) header.
187 uchar ip_hl_v; /* header length and version */
188 uchar ip_tos; /* type of service */
189 ushort ip_len; /* total length */
190 ushort ip_id; /* identification */
191 ushort ip_off; /* fragment offset field */
192 uchar ip_ttl; /* time to live */
193 uchar ip_p; /* protocol */
194 ushort ip_sum; /* checksum */
195 IPaddr_t ip_src; /* Source IP address */
196 IPaddr_t ip_dst; /* Destination IP address */
197 ushort udp_src; /* UDP source port */
198 ushort udp_dst; /* UDP destination port */
199 ushort udp_len; /* Length of UDP packet */
200 ushort udp_xsum; /* Checksum */
203 #define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
204 #define IP_HDR_SIZE (sizeof (IP_t))
208 * Address Resolution Protocol (ARP) header.
212 ushort ar_hrd; /* Format of hardware address */
213 # define ARP_ETHER 1 /* Ethernet hardware address */
214 ushort ar_pro; /* Format of protocol address */
215 uchar ar_hln; /* Length of hardware address */
216 uchar ar_pln; /* Length of protocol address */
217 ushort ar_op; /* Operation */
218 # define ARPOP_REQUEST 1 /* Request to resolve address */
219 # define ARPOP_REPLY 2 /* Response to previous request */
221 # define RARPOP_REQUEST 3 /* Request to resolve address */
222 # define RARPOP_REPLY 4 /* Response to previous request */
225 * The remaining fields are variable in size, according to
226 * the sizes above, and are defined as appropriate for
227 * specific hardware/protocol combinations.
231 uchar ar_sha[]; /* Sender hardware address */
232 uchar ar_spa[]; /* Sender protocol address */
233 uchar ar_tha[]; /* Target hardware address */
234 uchar ar_tpa[]; /* Target protocol address */
238 #define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
241 * ICMP stuff (just enough to handle (host) redirect messages)
243 #define ICMP_ECHO_REPLY 0 /* Echo reply */
244 #define ICMP_REDIRECT 5 /* Redirect (change route) */
245 #define ICMP_ECHO_REQUEST 8 /* Echo request */
247 /* Codes for REDIRECT. */
248 #define ICMP_REDIR_NET 0 /* Redirect Net */
249 #define ICMP_REDIR_HOST 1 /* Redirect Host */
251 typedef struct icmphdr {
270 * Maximum packet size; used to allocate packet storage.
271 * TFTP packets can be 524 bytes + IP header + ethernet header.
272 * Lets be conservative, and go for 38 * 16. (Must also be
273 * a multiple of 32 bytes).
276 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
277 * traffic type is not always controlled
278 * maximum packet size = 1518
279 * maximum packet size and multiple of 32 bytes = 1536
282 #define PKTSIZE_ALIGN 1536
283 /*#define PKTSIZE 608*/
286 * Maximum receive ring size; that is, the number of packets
287 * we can buffer before overflow happens. Basically, this just
288 * needs to be enough to prevent a packet being discarded while
289 * we are processing the previous one.
292 #define RINGSZ_LOG2 2
294 /**********************************************************************/
300 * All variables of type IPaddr_t are stored in NETWORK byte order
305 /** BOOTP EXTENTIONS **/
306 extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
307 extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
308 extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
309 #if defined(CONFIG_BOOTP_DNS2)
310 extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
312 extern char NetOurNISDomain[32]; /* Our NIS domain */
313 extern char NetOurHostName[32]; /* Our hostname */
314 extern char NetOurRootPath[64]; /* Our root path */
315 extern ushort NetBootFileSize; /* Our boot file size in blocks */
316 /** END OF BOOTP EXTENTIONS **/
317 extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
318 extern uchar NetOurEther[6]; /* Our ethernet address */
319 extern uchar NetServerEther[6]; /* Boot server enet address */
320 extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
321 extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
322 extern volatile uchar * NetTxPacket; /* THE transmit packet */
323 extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
324 extern volatile uchar * NetRxPkt; /* Current receive packet */
325 extern int NetRxPktLen; /* Current rx packet length */
326 extern unsigned NetIPID; /* IP ID (counting) */
327 extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
328 extern uchar NetEtherNullAddr[6];
330 #define VLAN_NONE 4095 /* untagged */
331 #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
332 extern ushort NetOurVLAN; /* Our VLAN */
333 extern ushort NetOurNativeVLAN; /* Our Native VLAN */
335 extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
336 extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
337 extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
339 extern int NetState; /* Network loop state */
340 #define NETLOOP_CONTINUE 1
341 #define NETLOOP_RESTART 2
342 #define NETLOOP_SUCCESS 3
343 #define NETLOOP_FAIL 4
345 #ifdef CONFIG_NET_MULTI
346 extern int NetRestartWrap; /* Tried all network devices */
349 typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP } proto_t;
352 extern char BootFile[128]; /* Boot File name */
354 #if defined(CONFIG_CMD_PING)
355 extern IPaddr_t NetPingIP; /* the ip address to ping */
358 #if defined(CONFIG_CMD_CDP)
359 /* when CDP completes these hold the return values */
360 extern ushort CDPNativeVLAN;
361 extern ushort CDPApplianceVLAN;
364 #if defined(CONFIG_CMD_SNTP)
365 extern IPaddr_t NetNtpServerIP; /* the ip address to NTP */
366 extern int NetTimeOffset; /* offset time from UTC */
369 /* Initialize the network adapter */
370 extern int NetLoop(proto_t);
372 /* Shutdown adapters and cleanup */
373 extern void NetStop(void);
375 /* Load failed. Start again. */
376 extern void NetStartAgain(void);
378 /* Get size of the ethernet header when we send */
379 extern int NetEthHdrSize(void);
381 /* Set ethernet header; returns the size of the header */
382 extern int NetSetEther(volatile uchar *, uchar *, uint);
385 extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
388 extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
389 extern uint NetCksum(uchar *, int); /* Calculate the checksum */
392 extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
393 extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */
395 /* Transmit "NetTxPacket" */
396 extern void NetSendPacket(volatile uchar *, int);
398 /* Transmit UDP packet, performing ARP request if needed */
399 extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
401 /* Processes a received packet */
402 extern void NetReceive(volatile uchar *, int);
404 /* Print an IP address on the console */
405 extern void print_IPaddr (IPaddr_t);
408 * The following functions are a bit ugly, but necessary to deal with
409 * alignment restrictions on ARM.
411 * We're using inline functions, which had the smallest memory
412 * footprint in our tests.
414 /* return IP *in network byteorder* */
415 static inline IPaddr_t NetReadIP(void *from)
418 memcpy((void*)&ip, from, sizeof(ip));
422 /* return ulong *in network byteorder* */
423 static inline ulong NetReadLong(ulong *from)
426 memcpy((void*)&l, (void*)from, sizeof(l));
430 /* write IP *in network byteorder* */
431 static inline void NetWriteIP(void *to, IPaddr_t ip)
433 memcpy(to, (void*)&ip, sizeof(ip));
437 static inline void NetCopyIP(void *to, void *from)
439 memcpy(to, from, sizeof(IPaddr_t));
443 static inline void NetCopyLong(ulong *to, ulong *from)
445 memcpy((void*)to, (void*)from, sizeof(ulong));
449 * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
450 * @addr: Pointer to a six-byte array containing the Ethernet address
452 * Return true if the address is all zeroes.
454 static inline int is_zero_ether_addr(const u8 *addr)
456 return !(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
460 * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
461 * @addr: Pointer to a six-byte array containing the Ethernet address
463 * Return true if the address is a multicast address.
464 * By definition the broadcast address is also a multicast address.
466 static inline int is_multicast_ether_addr(const u8 *addr)
468 return (0x01 & addr[0]);
471 /* Convert an IP address to a string */
472 extern void ip_to_string (IPaddr_t x, char *s);
474 /* Convert a string to ip address */
475 extern IPaddr_t string_to_ip(char *s);
477 /* Convert a VLAN id to a string */
478 extern void VLAN_to_string (ushort x, char *s);
480 /* Convert a string to a vlan id */
481 extern ushort string_to_VLAN(char *s);
483 /* read an IP address from a environment variable */
484 extern IPaddr_t getenv_IPaddr (char *);
486 /* read a VLAN id from an environment variable */
487 extern ushort getenv_VLAN(char *);
489 /* copy a filename (allow for "..." notation, limit length) */
490 extern void copy_filename (char *dst, char *src, int size);
492 /**********************************************************************/
494 #endif /* __NET_H__ */