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2d966958 WD |
1 | /* |
2 | * Copied from Linux Monitor (LiMon) - Networking. | |
3 | * | |
4 | * Copyright 1994 - 2000 Neil Russell. | |
5 | * (See License) | |
6 | * Copyright 2000 Roland Borde | |
7 | * Copyright 2000 Paolo Scaffardi | |
8 | * Copyright 2000-2002 Wolfgang Denk, wd@denx.de | |
9 | */ | |
10 | ||
11 | /* | |
12 | * General Desription: | |
13 | * | |
14 | * The user interface supports commands for BOOTP, RARP, and TFTP. | |
15 | * Also, we support ARP internally. Depending on available data, | |
16 | * these interact as follows: | |
17 | * | |
18 | * BOOTP: | |
19 | * | |
20 | * Prerequisites: - own ethernet address | |
21 | * We want: - own IP address | |
22 | * - TFTP server IP address | |
23 | * - name of bootfile | |
24 | * Next step: ARP | |
25 | * | |
26 | * RARP: | |
27 | * | |
28 | * Prerequisites: - own ethernet address | |
29 | * We want: - own IP address | |
30 | * - TFTP server IP address | |
31 | * Next step: ARP | |
32 | * | |
33 | * ARP: | |
34 | * | |
35 | * Prerequisites: - own ethernet address | |
36 | * - own IP address | |
37 | * - TFTP server IP address | |
38 | * We want: - TFTP server ethernet address | |
39 | * Next step: TFTP | |
40 | * | |
41 | * DHCP: | |
42 | * | |
b2f50807 WD |
43 | * Prerequisites: - own ethernet address |
44 | * We want: - IP, Netmask, ServerIP, Gateway IP | |
45 | * - bootfilename, lease time | |
46 | * Next step: - TFTP | |
2d966958 WD |
47 | * |
48 | * TFTP: | |
49 | * | |
50 | * Prerequisites: - own ethernet address | |
51 | * - own IP address | |
52 | * - TFTP server IP address | |
53 | * - TFTP server ethernet address | |
54 | * - name of bootfile (if unknown, we use a default name | |
55 | * derived from our own IP address) | |
56 | * We want: - load the boot file | |
57 | * Next step: none | |
cbd8a35c WD |
58 | * |
59 | * NFS: | |
60 | * | |
61 | * Prerequisites: - own ethernet address | |
62 | * - own IP address | |
63 | * - name of bootfile (if unknown, we use a default name | |
64 | * derived from our own IP address) | |
65 | * We want: - load the boot file | |
66 | * Next step: none | |
ea287deb WD |
67 | * |
68 | * SNTP: | |
69 | * | |
b2f50807 | 70 | * Prerequisites: - own ethernet address |
ea287deb WD |
71 | * - own IP address |
72 | * We want: - network time | |
73 | * Next step: none | |
2d966958 WD |
74 | */ |
75 | ||
76 | ||
77 | #include <common.h> | |
78 | #include <watchdog.h> | |
79 | #include <command.h> | |
80 | #include <net.h> | |
81 | #include "bootp.h" | |
82 | #include "tftp.h" | |
bf6cb247 | 83 | #ifdef CONFIG_CMD_RARP |
2d966958 | 84 | #include "rarp.h" |
bf6cb247 | 85 | #endif |
cbd8a35c | 86 | #include "nfs.h" |
fc3e2165 WD |
87 | #ifdef CONFIG_STATUS_LED |
88 | #include <status_led.h> | |
89 | #include <miiphy.h> | |
90 | #endif | |
643d1ab2 | 91 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
92 | #include "sntp.h" |
93 | #endif | |
561858ee PT |
94 | #if defined(CONFIG_CDP_VERSION) |
95 | #include <timestamp.h> | |
96 | #endif | |
1a32bf41 RG |
97 | #if defined(CONFIG_CMD_DNS) |
98 | #include "dns.h" | |
99 | #endif | |
2d966958 | 100 | |
d87080b7 WD |
101 | DECLARE_GLOBAL_DATA_PTR; |
102 | ||
40cb90ee | 103 | #ifndef CONFIG_ARP_TIMEOUT |
3e38e429 LC |
104 | /* Milliseconds before trying ARP again */ |
105 | # define ARP_TIMEOUT 5000UL | |
40cb90ee | 106 | #else |
49f3bdbb | 107 | # define ARP_TIMEOUT CONFIG_ARP_TIMEOUT |
40cb90ee GL |
108 | #endif |
109 | ||
110 | ||
73a8b27c | 111 | #ifndef CONFIG_NET_RETRY_COUNT |
40cb90ee | 112 | # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
73a8b27c | 113 | #else |
40cb90ee | 114 | # define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT |
73a8b27c WD |
115 | #endif |
116 | ||
2d966958 WD |
117 | /** BOOTP EXTENTIONS **/ |
118 | ||
3e38e429 | 119 | /* Our subnet mask (0=unknown) */ |
c586ce6e | 120 | IPaddr_t NetOurSubnetMask; |
3e38e429 | 121 | /* Our gateways IP address */ |
c586ce6e | 122 | IPaddr_t NetOurGatewayIP; |
3e38e429 | 123 | /* Our DNS IP address */ |
c586ce6e | 124 | IPaddr_t NetOurDNSIP; |
1fe80d79 | 125 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 126 | /* Our 2nd DNS IP address */ |
c586ce6e | 127 | IPaddr_t NetOurDNS2IP; |
3e38e429 LC |
128 | #endif |
129 | /* Our NIS domain */ | |
c586ce6e | 130 | char NetOurNISDomain[32] = {0,}; |
3e38e429 | 131 | /* Our hostname */ |
c586ce6e | 132 | char NetOurHostName[32] = {0,}; |
3e38e429 | 133 | /* Our bootpath */ |
c586ce6e | 134 | char NetOurRootPath[64] = {0,}; |
3e38e429 | 135 | /* Our bootfile size in blocks */ |
c586ce6e | 136 | ushort NetBootFileSize; |
2d966958 | 137 | |
53a5c424 DU |
138 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
139 | IPaddr_t Mcast_addr; | |
140 | #endif | |
141 | ||
2d966958 WD |
142 | /** END OF BOOTP EXTENTIONS **/ |
143 | ||
3e38e429 LC |
144 | /* The actual transferred size of the bootfile (in bytes) */ |
145 | ulong NetBootFileXferSize; | |
146 | /* Our ethernet address */ | |
147 | uchar NetOurEther[6]; | |
148 | /* Boot server enet address */ | |
c586ce6e | 149 | uchar NetServerEther[6]; |
3e38e429 LC |
150 | /* Our IP addr (0 = unknown) */ |
151 | IPaddr_t NetOurIP; | |
152 | /* Server IP addr (0 = unknown) */ | |
153 | IPaddr_t NetServerIP; | |
154 | /* Current receive packet */ | |
155 | volatile uchar *NetRxPacket; | |
156 | /* Current rx packet length */ | |
157 | int NetRxPacketLen; | |
158 | /* IP packet ID */ | |
159 | unsigned NetIPID; | |
160 | /* Ethernet bcast address */ | |
c586ce6e LC |
161 | uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
162 | uchar NetEtherNullAddr[6]; | |
f85b6071 RJ |
163 | #ifdef CONFIG_API |
164 | void (*push_packet)(volatile void *, int len) = 0; | |
165 | #endif | |
643d1ab2 | 166 | #if defined(CONFIG_CMD_CDP) |
3e38e429 | 167 | /* Ethernet bcast address */ |
c586ce6e | 168 | uchar NetCDPAddr[6] = { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc }; |
a3d991bd | 169 | #endif |
3e38e429 LC |
170 | /* Network loop state */ |
171 | int NetState; | |
3e38e429 | 172 | /* Tried all network devices */ |
c586ce6e | 173 | int NetRestartWrap; |
3e38e429 | 174 | /* Network loop restarted */ |
c586ce6e | 175 | static int NetRestarted; |
3e38e429 | 176 | /* At least one device configured */ |
c586ce6e | 177 | static int NetDevExists; |
2d966958 | 178 | |
6e592385 | 179 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 LC |
180 | /* default is without VLAN */ |
181 | ushort NetOurVLAN = 0xFFFF; | |
182 | /* ditto */ | |
183 | ushort NetOurNativeVLAN = 0xFFFF; | |
a3d991bd | 184 | |
3e38e429 LC |
185 | /* Boot File name */ |
186 | char BootFile[128]; | |
2d966958 | 187 | |
643d1ab2 | 188 | #if defined(CONFIG_CMD_PING) |
3e38e429 LC |
189 | /* the ip address to ping */ |
190 | IPaddr_t NetPingIP; | |
73a8b27c WD |
191 | |
192 | static void PingStart(void); | |
193 | #endif | |
194 | ||
643d1ab2 | 195 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
196 | static void CDPStart(void); |
197 | #endif | |
198 | ||
643d1ab2 | 199 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 LC |
200 | /* NTP server IP address */ |
201 | IPaddr_t NetNtpServerIP; | |
202 | /* offset time from UTC */ | |
c586ce6e | 203 | int NetTimeOffset; |
ea287deb WD |
204 | #endif |
205 | ||
68ceb29e WD |
206 | #ifdef CONFIG_NETCONSOLE |
207 | void NcStart(void); | |
208 | int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len); | |
209 | #endif | |
210 | ||
2d966958 WD |
211 | volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
212 | ||
3e38e429 LC |
213 | /* Receive packet */ |
214 | volatile uchar *NetRxPackets[PKTBUFSRX]; | |
2d966958 | 215 | |
3e38e429 LC |
216 | /* Current RX packet handler */ |
217 | static rxhand_f *packetHandler; | |
218 | /* Current timeout handler */ | |
219 | static thand_f *timeHandler; | |
220 | /* Time base value */ | |
221 | static ulong timeStart; | |
222 | /* Current timeout value */ | |
223 | static ulong timeDelta; | |
224 | /* THE transmit packet */ | |
c586ce6e | 225 | volatile uchar *NetTxPacket; |
2d966958 | 226 | |
4f63acd0 | 227 | static int net_check_prereq(proto_t protocol); |
2d966958 | 228 | |
67b96e87 RB |
229 | static int NetTryCount; |
230 | ||
73a8b27c WD |
231 | /**********************************************************************/ |
232 | ||
233 | IPaddr_t NetArpWaitPacketIP; | |
234 | IPaddr_t NetArpWaitReplyIP; | |
3e38e429 LC |
235 | /* MAC address of waiting packet's destination */ |
236 | uchar *NetArpWaitPacketMAC; | |
237 | /* THE transmit packet */ | |
238 | uchar *NetArpWaitTxPacket; | |
73a8b27c | 239 | int NetArpWaitTxPacketSize; |
53677ef1 | 240 | uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN]; |
73a8b27c WD |
241 | ulong NetArpWaitTimerStart; |
242 | int NetArpWaitTry; | |
243 | ||
4f63acd0 | 244 | void ArpRequest(void) |
73a8b27c WD |
245 | { |
246 | int i; | |
247 | volatile uchar *pkt; | |
6e592385 | 248 | ARP_t *arp; |
73a8b27c | 249 | |
0ebf04c6 RG |
250 | debug("ARP broadcast %d\n", NetArpWaitTry); |
251 | ||
73a8b27c WD |
252 | pkt = NetTxPacket; |
253 | ||
4f63acd0 | 254 | pkt += NetSetEther(pkt, NetBcastAddr, PROT_ARP); |
73a8b27c | 255 | |
6e592385 | 256 | arp = (ARP_t *) pkt; |
73a8b27c | 257 | |
4f63acd0 LC |
258 | arp->ar_hrd = htons(ARP_ETHER); |
259 | arp->ar_pro = htons(PROT_IP); | |
73a8b27c WD |
260 | arp->ar_hln = 6; |
261 | arp->ar_pln = 4; | |
4f63acd0 | 262 | arp->ar_op = htons(ARPOP_REQUEST); |
73a8b27c | 263 | |
3e38e429 | 264 | /* source ET addr */ |
4f63acd0 | 265 | memcpy(&arp->ar_data[0], NetOurEther, 6); |
3e38e429 | 266 | /* source IP addr */ |
4f63acd0 | 267 | NetWriteIP((uchar *) &arp->ar_data[6], NetOurIP); |
6e592385 | 268 | for (i = 10; i < 16; ++i) { |
3e38e429 LC |
269 | /* dest ET addr = 0 */ |
270 | arp->ar_data[i] = 0; | |
73a8b27c WD |
271 | } |
272 | ||
6e592385 WD |
273 | if ((NetArpWaitPacketIP & NetOurSubnetMask) != |
274 | (NetOurIP & NetOurSubnetMask)) { | |
275 | if (NetOurGatewayIP == 0) { | |
4f63acd0 | 276 | puts("## Warning: gatewayip needed but not set\n"); |
d509b812 WD |
277 | NetArpWaitReplyIP = NetArpWaitPacketIP; |
278 | } else { | |
279 | NetArpWaitReplyIP = NetOurGatewayIP; | |
6e592385 | 280 | } |
6e592385 WD |
281 | } else { |
282 | NetArpWaitReplyIP = NetArpWaitPacketIP; | |
283 | } | |
73a8b27c | 284 | |
4f63acd0 LC |
285 | NetWriteIP((uchar *) &arp->ar_data[16], NetArpWaitReplyIP); |
286 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE); | |
73a8b27c WD |
287 | } |
288 | ||
289 | void ArpTimeoutCheck(void) | |
290 | { | |
291 | ulong t; | |
292 | ||
293 | if (!NetArpWaitPacketIP) | |
294 | return; | |
295 | ||
296 | t = get_timer(0); | |
297 | ||
298 | /* check for arp timeout */ | |
49f3bdbb | 299 | if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) { |
73a8b27c WD |
300 | NetArpWaitTry++; |
301 | ||
302 | if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) { | |
4f63acd0 | 303 | puts("\nARP Retry count exceeded; starting again\n"); |
73a8b27c WD |
304 | NetArpWaitTry = 0; |
305 | NetStartAgain(); | |
306 | } else { | |
307 | NetArpWaitTimerStart = t; | |
308 | ArpRequest(); | |
309 | } | |
310 | } | |
311 | } | |
312 | ||
da95427c | 313 | static void |
2f70c49e HS |
314 | NetInitLoop(proto_t protocol) |
315 | { | |
c586ce6e | 316 | static int env_changed_id; |
2f70c49e | 317 | bd_t *bd = gd->bd; |
4f63acd0 | 318 | int env_id = get_env_id(); |
2f70c49e HS |
319 | |
320 | /* update only when the environment has changed */ | |
3c172c4f | 321 | if (env_changed_id != env_id) { |
23a70bf9 EBS |
322 | NetOurIP = getenv_IPaddr("ipaddr"); |
323 | NetCopyIP(&bd->bi_ip_addr, &NetOurIP); | |
4f63acd0 LC |
324 | NetOurGatewayIP = getenv_IPaddr("gatewayip"); |
325 | NetOurSubnetMask = getenv_IPaddr("netmask"); | |
326 | NetServerIP = getenv_IPaddr("serverip"); | |
2f70c49e | 327 | NetOurNativeVLAN = getenv_VLAN("nvlan"); |
3c172c4f | 328 | NetOurVLAN = getenv_VLAN("vlan"); |
1a32bf41 RG |
329 | #if defined(CONFIG_CMD_DNS) |
330 | NetOurDNSIP = getenv_IPaddr("dnsip"); | |
331 | #endif | |
3c172c4f | 332 | env_changed_id = env_id; |
2f70c49e | 333 | } |
3c172c4f | 334 | |
da95427c | 335 | return; |
2f70c49e HS |
336 | } |
337 | ||
2d966958 WD |
338 | /**********************************************************************/ |
339 | /* | |
340 | * Main network processing loop. | |
341 | */ | |
342 | ||
343 | int | |
344 | NetLoop(proto_t protocol) | |
345 | { | |
2d966958 WD |
346 | bd_t *bd = gd->bd; |
347 | ||
2d966958 WD |
348 | NetRestarted = 0; |
349 | NetDevExists = 0; | |
2d966958 | 350 | |
73a8b27c WD |
351 | /* XXX problem with bss workaround */ |
352 | NetArpWaitPacketMAC = NULL; | |
353 | NetArpWaitTxPacket = NULL; | |
354 | NetArpWaitPacketIP = 0; | |
355 | NetArpWaitReplyIP = 0; | |
356 | NetArpWaitTxPacket = NULL; | |
357 | NetTxPacket = NULL; | |
67b96e87 | 358 | NetTryCount = 1; |
73a8b27c | 359 | |
2d966958 WD |
360 | if (!NetTxPacket) { |
361 | int i; | |
2d966958 WD |
362 | /* |
363 | * Setup packet buffers, aligned correctly. | |
364 | */ | |
365 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
366 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
d3c65b01 | 367 | for (i = 0; i < PKTBUFSRX; i++) |
2d966958 | 368 | NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN; |
73a8b27c WD |
369 | } |
370 | ||
371 | if (!NetArpWaitTxPacket) { | |
372 | NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1); | |
373 | NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN; | |
374 | NetArpWaitTxPacketSize = 0; | |
2d966958 WD |
375 | } |
376 | ||
377 | eth_halt(); | |
a3d991bd | 378 | eth_set_current(); |
b1bf6f2c WD |
379 | if (eth_init(bd) < 0) { |
380 | eth_halt(); | |
92895de9 | 381 | return -1; |
b1bf6f2c | 382 | } |
2d966958 WD |
383 | |
384 | restart: | |
4f63acd0 | 385 | memcpy(NetOurEther, eth_get_dev()->enetaddr, 6); |
2d966958 WD |
386 | |
387 | NetState = NETLOOP_CONTINUE; | |
388 | ||
389 | /* | |
390 | * Start the ball rolling with the given start function. From | |
391 | * here on, this code is a state machine driven by received | |
392 | * packets and timer events. | |
393 | */ | |
2f70c49e | 394 | NetInitLoop(protocol); |
2d966958 | 395 | |
4f63acd0 | 396 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
397 | case 1: |
398 | /* network not configured */ | |
b1bf6f2c | 399 | eth_halt(); |
92895de9 | 400 | return -1; |
2d966958 | 401 | |
2d966958 WD |
402 | case 2: |
403 | /* network device not configured */ | |
404 | break; | |
2d966958 WD |
405 | |
406 | case 0: | |
2d966958 | 407 | NetDevExists = 1; |
2d966958 WD |
408 | switch (protocol) { |
409 | case TFTP: | |
410 | /* always use ARP to get server ethernet address */ | |
73a8b27c | 411 | TftpStart(); |
2d966958 | 412 | break; |
7a83af07 LC |
413 | #ifdef CONFIG_CMD_TFTPSRV |
414 | case TFTPSRV: | |
415 | TftpStartServer(); | |
416 | break; | |
417 | #endif | |
643d1ab2 | 418 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 419 | case DHCP: |
d407bf52 | 420 | BootpTry = 0; |
09133f85 | 421 | NetOurIP = 0; |
2d966958 WD |
422 | DhcpRequest(); /* Basically same as BOOTP */ |
423 | break; | |
610f2e9c | 424 | #endif |
2d966958 WD |
425 | |
426 | case BOOTP: | |
427 | BootpTry = 0; | |
09133f85 | 428 | NetOurIP = 0; |
4f63acd0 | 429 | BootpRequest(); |
2d966958 WD |
430 | break; |
431 | ||
bf6cb247 | 432 | #if defined(CONFIG_CMD_RARP) |
2d966958 WD |
433 | case RARP: |
434 | RarpTry = 0; | |
09133f85 | 435 | NetOurIP = 0; |
4f63acd0 | 436 | RarpRequest(); |
2d966958 | 437 | break; |
bf6cb247 | 438 | #endif |
643d1ab2 | 439 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
440 | case PING: |
441 | PingStart(); | |
442 | break; | |
cbd8a35c | 443 | #endif |
643d1ab2 | 444 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c WD |
445 | case NFS: |
446 | NfsStart(); | |
447 | break; | |
a3d991bd | 448 | #endif |
643d1ab2 | 449 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
450 | case CDP: |
451 | CDPStart(); | |
452 | break; | |
68ceb29e WD |
453 | #endif |
454 | #ifdef CONFIG_NETCONSOLE | |
455 | case NETCONS: | |
456 | NcStart(); | |
457 | break; | |
ea287deb | 458 | #endif |
643d1ab2 | 459 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
460 | case SNTP: |
461 | SntpStart(); | |
462 | break; | |
1a32bf41 RG |
463 | #endif |
464 | #if defined(CONFIG_CMD_DNS) | |
465 | case DNS: | |
466 | DnsStart(); | |
467 | break; | |
73a8b27c | 468 | #endif |
2d966958 WD |
469 | default: |
470 | break; | |
471 | } | |
472 | ||
473 | NetBootFileXferSize = 0; | |
474 | break; | |
475 | } | |
476 | ||
643d1ab2 | 477 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 LC |
478 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
479 | defined(CONFIG_STATUS_LED) && \ | |
480 | defined(STATUS_LED_RED) | |
fc3e2165 | 481 | /* |
42d1f039 | 482 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 483 | */ |
d3c65b01 | 484 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 485 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 486 | else |
4f63acd0 | 487 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 488 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 489 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
490 | |
491 | /* | |
492 | * Main packet reception loop. Loop receiving packets until | |
59acc296 | 493 | * someone sets `NetState' to a state that terminates. |
2d966958 WD |
494 | */ |
495 | for (;;) { | |
496 | WATCHDOG_RESET(); | |
497 | #ifdef CONFIG_SHOW_ACTIVITY | |
498 | { | |
499 | extern void show_activity(int arg); | |
500 | show_activity(1); | |
501 | } | |
502 | #endif | |
503 | /* | |
504 | * Check the ethernet for a new packet. The ethernet | |
505 | * receive routine will process it. | |
506 | */ | |
40cb90ee | 507 | eth_rx(); |
2d966958 WD |
508 | |
509 | /* | |
510 | * Abort if ctrl-c was pressed. | |
511 | */ | |
512 | if (ctrlc()) { | |
8bde7f77 | 513 | eth_halt(); |
4f63acd0 | 514 | puts("\nAbort\n"); |
92895de9 | 515 | return -1; |
2d966958 WD |
516 | } |
517 | ||
73a8b27c | 518 | ArpTimeoutCheck(); |
2d966958 WD |
519 | |
520 | /* | |
521 | * Check for a timeout, and run the timeout handler | |
522 | * if we have one. | |
523 | */ | |
e0ac62d7 | 524 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
525 | thand_f *x; |
526 | ||
643d1ab2 | 527 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
528 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
529 | defined(CONFIG_STATUS_LED) && \ | |
530 | defined(STATUS_LED_RED) | |
fc3e2165 | 531 | /* |
42d1f039 | 532 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 533 | */ |
4f63acd0 | 534 | if (miiphy_link(eth_get_dev()->name, |
3e38e429 | 535 | CONFIG_SYS_FAULT_MII_ADDR)) { |
4f63acd0 | 536 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
fc3e2165 | 537 | } else { |
4f63acd0 | 538 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
fc3e2165 | 539 | } |
4f63acd0 | 540 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 541 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
542 | x = timeHandler; |
543 | timeHandler = (thand_f *)0; | |
544 | (*x)(); | |
545 | } | |
546 | ||
547 | ||
548 | switch (NetState) { | |
549 | ||
550 | case NETLOOP_RESTART: | |
2d966958 | 551 | NetRestarted = 1; |
2d966958 WD |
552 | goto restart; |
553 | ||
554 | case NETLOOP_SUCCESS: | |
555 | if (NetBootFileXferSize > 0) { | |
f34024d4 | 556 | char buf[20]; |
2d966958 WD |
557 | printf("Bytes transferred = %ld (%lx hex)\n", |
558 | NetBootFileXferSize, | |
559 | NetBootFileXferSize); | |
f34024d4 | 560 | sprintf(buf, "%lX", NetBootFileXferSize); |
2d966958 | 561 | setenv("filesize", buf); |
a3d991bd WD |
562 | |
563 | sprintf(buf, "%lX", (unsigned long)load_addr); | |
564 | setenv("fileaddr", buf); | |
2d966958 WD |
565 | } |
566 | eth_halt(); | |
567 | return NetBootFileXferSize; | |
568 | ||
569 | case NETLOOP_FAIL: | |
92895de9 | 570 | return -1; |
2d966958 WD |
571 | } |
572 | } | |
573 | } | |
574 | ||
575 | /**********************************************************************/ | |
576 | ||
577 | static void | |
578 | startAgainTimeout(void) | |
579 | { | |
580 | NetState = NETLOOP_RESTART; | |
581 | } | |
582 | ||
583 | static void | |
03eb129f LC |
584 | startAgainHandler(uchar *pkt, unsigned dest, IPaddr_t sip, |
585 | unsigned src, unsigned len) | |
2d966958 WD |
586 | { |
587 | /* Totally ignore the packet */ | |
588 | } | |
589 | ||
4f63acd0 | 590 | void NetStartAgain(void) |
2d966958 | 591 | { |
6e592385 | 592 | char *nretry; |
67b96e87 RB |
593 | int retry_forever = 0; |
594 | unsigned long retrycnt = 0; | |
595 | ||
596 | nretry = getenv("netretry"); | |
597 | if (nretry) { | |
598 | if (!strcmp(nretry, "yes")) | |
599 | retry_forever = 1; | |
600 | else if (!strcmp(nretry, "no")) | |
601 | retrycnt = 0; | |
602 | else if (!strcmp(nretry, "once")) | |
603 | retrycnt = 1; | |
604 | else | |
605 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
606 | } else | |
607 | retry_forever = 1; | |
608 | ||
609 | if ((!retry_forever) && (NetTryCount >= retrycnt)) { | |
610 | eth_halt(); | |
a3d991bd WD |
611 | NetState = NETLOOP_FAIL; |
612 | return; | |
613 | } | |
67b96e87 RB |
614 | |
615 | NetTryCount++; | |
616 | ||
4f63acd0 | 617 | eth_halt(); |
8b0c5c12 | 618 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
4f63acd0 | 619 | eth_try_another(!NetRestarted); |
8b0c5c12 | 620 | #endif |
4f63acd0 | 621 | eth_init(gd->bd); |
6e592385 | 622 | if (NetRestartWrap) { |
2d966958 | 623 | NetRestartWrap = 0; |
67b96e87 | 624 | if (NetDevExists) { |
4f63acd0 LC |
625 | NetSetTimeout(10000UL, startAgainTimeout); |
626 | NetSetHandler(startAgainHandler); | |
6e592385 | 627 | } else { |
2d966958 WD |
628 | NetState = NETLOOP_FAIL; |
629 | } | |
6e592385 | 630 | } else { |
2d966958 WD |
631 | NetState = NETLOOP_RESTART; |
632 | } | |
2d966958 WD |
633 | } |
634 | ||
635 | /**********************************************************************/ | |
636 | /* | |
637 | * Miscelaneous bits. | |
638 | */ | |
639 | ||
640 | void | |
6b147d11 | 641 | NetSetHandler(rxhand_f *f) |
2d966958 WD |
642 | { |
643 | packetHandler = f; | |
644 | } | |
645 | ||
646 | ||
647 | void | |
6b147d11 | 648 | NetSetTimeout(ulong iv, thand_f *f) |
2d966958 WD |
649 | { |
650 | if (iv == 0) { | |
651 | timeHandler = (thand_f *)0; | |
652 | } else { | |
653 | timeHandler = f; | |
e0ac62d7 WD |
654 | timeStart = get_timer(0); |
655 | timeDelta = iv; | |
2d966958 WD |
656 | } |
657 | } | |
658 | ||
659 | ||
660 | void | |
6b147d11 | 661 | NetSendPacket(volatile uchar *pkt, int len) |
2d966958 WD |
662 | { |
663 | (void) eth_send(pkt, len); | |
664 | } | |
665 | ||
73a8b27c WD |
666 | int |
667 | NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len) | |
668 | { | |
a3d991bd WD |
669 | uchar *pkt; |
670 | ||
73a8b27c WD |
671 | /* convert to new style broadcast */ |
672 | if (dest == 0) | |
673 | dest = 0xFFFFFFFF; | |
674 | ||
675 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
676 | if (dest == 0xFFFFFFFF) | |
677 | ether = NetBcastAddr; | |
678 | ||
3e38e429 LC |
679 | /* |
680 | * if MAC address was not discovered yet, save the packet and do | |
681 | * an ARP request | |
682 | */ | |
73a8b27c WD |
683 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { |
684 | ||
0ebf04c6 RG |
685 | debug("sending ARP for %08lx\n", dest); |
686 | ||
73a8b27c WD |
687 | NetArpWaitPacketIP = dest; |
688 | NetArpWaitPacketMAC = ether; | |
a3d991bd WD |
689 | |
690 | pkt = NetArpWaitTxPacket; | |
4f63acd0 | 691 | pkt += NetSetEther(pkt, NetArpWaitPacketMAC, PROT_IP); |
a3d991bd | 692 | |
4f63acd0 | 693 | NetSetIP(pkt, dest, dport, sport, len); |
3e38e429 LC |
694 | memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + |
695 | (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len); | |
73a8b27c WD |
696 | |
697 | /* size of the waiting packet */ | |
3e38e429 LC |
698 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + |
699 | IP_HDR_SIZE + len; | |
73a8b27c WD |
700 | |
701 | /* and do the ARP request */ | |
702 | NetArpWaitTry = 1; | |
703 | NetArpWaitTimerStart = get_timer(0); | |
704 | ArpRequest(); | |
705 | return 1; /* waiting */ | |
706 | } | |
707 | ||
0ebf04c6 | 708 | debug("sending UDP to %08lx/%pM\n", dest, ether); |
73a8b27c | 709 | |
a3d991bd | 710 | pkt = (uchar *)NetTxPacket; |
4f63acd0 LC |
711 | pkt += NetSetEther(pkt, ether, PROT_IP); |
712 | NetSetIP(pkt, dest, dport, sport, len); | |
a3d991bd | 713 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len); |
73a8b27c | 714 | |
6e592385 | 715 | return 0; /* transmitted */ |
73a8b27c WD |
716 | } |
717 | ||
643d1ab2 | 718 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
719 | static ushort PingSeqNo; |
720 | ||
721 | int PingSend(void) | |
722 | { | |
723 | static uchar mac[6]; | |
724 | volatile IP_t *ip; | |
725 | volatile ushort *s; | |
a3d991bd | 726 | uchar *pkt; |
73a8b27c WD |
727 | |
728 | /* XXX always send arp request */ | |
729 | ||
730 | memcpy(mac, NetEtherNullAddr, 6); | |
731 | ||
0ebf04c6 | 732 | debug("sending ARP for %08lx\n", NetPingIP); |
73a8b27c WD |
733 | |
734 | NetArpWaitPacketIP = NetPingIP; | |
735 | NetArpWaitPacketMAC = mac; | |
736 | ||
a3d991bd WD |
737 | pkt = NetArpWaitTxPacket; |
738 | pkt += NetSetEther(pkt, mac, PROT_IP); | |
73a8b27c | 739 | |
a3d991bd | 740 | ip = (volatile IP_t *)pkt; |
73a8b27c WD |
741 | |
742 | /* | |
3e38e429 LC |
743 | * Construct an IP and ICMP header. |
744 | * (need to set no fragment bit - XXX) | |
73a8b27c | 745 | */ |
3e38e429 LC |
746 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
747 | ip->ip_hl_v = 0x45; | |
73a8b27c WD |
748 | ip->ip_tos = 0; |
749 | ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8); | |
750 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 751 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
73a8b27c WD |
752 | ip->ip_ttl = 255; |
753 | ip->ip_p = 0x01; /* ICMP */ | |
754 | ip->ip_sum = 0; | |
3e38e429 | 755 | /* already in network byte order */ |
6b147d11 | 756 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); |
3e38e429 | 757 | /* - "" - */ |
6b147d11 | 758 | NetCopyIP((void *)&ip->ip_dst, &NetPingIP); |
73a8b27c WD |
759 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); |
760 | ||
761 | s = &ip->udp_src; /* XXX ICMP starts here */ | |
762 | s[0] = htons(0x0800); /* echo-request, code */ | |
763 | s[1] = 0; /* checksum */ | |
53677ef1 | 764 | s[2] = 0; /* identifier */ |
73a8b27c WD |
765 | s[3] = htons(PingSeqNo++); /* sequence number */ |
766 | s[1] = ~NetCksum((uchar *)s, 8/2); | |
767 | ||
768 | /* size of the waiting packet */ | |
3e38e429 LC |
769 | NetArpWaitTxPacketSize = |
770 | (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8; | |
73a8b27c WD |
771 | |
772 | /* and do the ARP request */ | |
773 | NetArpWaitTry = 1; | |
774 | NetArpWaitTimerStart = get_timer(0); | |
775 | ArpRequest(); | |
776 | return 1; /* waiting */ | |
777 | } | |
778 | ||
779 | static void | |
4f63acd0 | 780 | PingTimeout(void) |
73a8b27c WD |
781 | { |
782 | eth_halt(); | |
783 | NetState = NETLOOP_FAIL; /* we did not get the reply */ | |
784 | } | |
2d966958 | 785 | |
73a8b27c | 786 | static void |
03eb129f LC |
787 | PingHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, |
788 | unsigned len) | |
73a8b27c | 789 | { |
03eb129f | 790 | if (sip != NetPingIP) |
73a8b27c WD |
791 | return; |
792 | ||
793 | NetState = NETLOOP_SUCCESS; | |
794 | } | |
795 | ||
796 | static void PingStart(void) | |
797 | { | |
4f63acd0 | 798 | printf("Using %s device\n", eth_get_name()); |
4f63acd0 LC |
799 | NetSetTimeout(10000UL, PingTimeout); |
800 | NetSetHandler(PingHandler); | |
73a8b27c WD |
801 | |
802 | PingSend(); | |
803 | } | |
610f2e9c | 804 | #endif |
2d966958 | 805 | |
643d1ab2 | 806 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
807 | |
808 | #define CDP_DEVICE_ID_TLV 0x0001 | |
809 | #define CDP_ADDRESS_TLV 0x0002 | |
810 | #define CDP_PORT_ID_TLV 0x0003 | |
811 | #define CDP_CAPABILITIES_TLV 0x0004 | |
812 | #define CDP_VERSION_TLV 0x0005 | |
813 | #define CDP_PLATFORM_TLV 0x0006 | |
814 | #define CDP_NATIVE_VLAN_TLV 0x000a | |
815 | #define CDP_APPLIANCE_VLAN_TLV 0x000e | |
816 | #define CDP_TRIGGER_TLV 0x000f | |
817 | #define CDP_POWER_CONSUMPTION_TLV 0x0010 | |
818 | #define CDP_SYSNAME_TLV 0x0014 | |
819 | #define CDP_SYSOBJECT_TLV 0x0015 | |
820 | #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016 | |
821 | ||
49f3bdbb | 822 | #define CDP_TIMEOUT 250UL /* one packet every 250ms */ |
a3d991bd WD |
823 | |
824 | static int CDPSeq; | |
825 | static int CDPOK; | |
826 | ||
827 | ushort CDPNativeVLAN; | |
828 | ushort CDPApplianceVLAN; | |
829 | ||
3e38e429 LC |
830 | static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, |
831 | 0x00 }; | |
a3d991bd WD |
832 | |
833 | static ushort CDP_compute_csum(const uchar *buff, ushort len) | |
834 | { | |
835 | ushort csum; | |
836 | int odd; | |
837 | ulong result = 0; | |
838 | ushort leftover; | |
77ddac94 | 839 | ushort *p; |
a3d991bd WD |
840 | |
841 | if (len > 0) { | |
842 | odd = 1 & (ulong)buff; | |
843 | if (odd) { | |
844 | result = *buff << 8; | |
845 | len--; | |
846 | buff++; | |
847 | } | |
848 | while (len > 1) { | |
77ddac94 WD |
849 | p = (ushort *)buff; |
850 | result += *p++; | |
851 | buff = (uchar *)p; | |
a3d991bd WD |
852 | if (result & 0x80000000) |
853 | result = (result & 0xFFFF) + (result >> 16); | |
854 | len -= 2; | |
855 | } | |
856 | if (len) { | |
857 | leftover = (signed short)(*(const signed char *)buff); | |
3ada834e WD |
858 | /* CISCO SUCKS big time! (and blows too): |
859 | * CDP uses the IP checksum algorithm with a twist; | |
860 | * for the last byte it *sign* extends and sums. | |
861 | */ | |
3e38e429 LC |
862 | result = (result & 0xffff0000) | |
863 | ((result + leftover) & 0x0000ffff); | |
a3d991bd WD |
864 | } |
865 | while (result >> 16) | |
866 | result = (result & 0xFFFF) + (result >> 16); | |
867 | ||
868 | if (odd) | |
3e38e429 LC |
869 | result = ((result >> 8) & 0xff) | |
870 | ((result & 0xff) << 8); | |
a3d991bd WD |
871 | } |
872 | ||
873 | /* add up 16-bit and 17-bit words for 17+c bits */ | |
874 | result = (result & 0xffff) + (result >> 16); | |
875 | /* add up 16-bit and 2-bit for 16+c bit */ | |
876 | result = (result & 0xffff) + (result >> 16); | |
877 | /* add up carry.. */ | |
878 | result = (result & 0xffff) + (result >> 16); | |
879 | ||
880 | /* negate */ | |
881 | csum = ~(ushort)result; | |
882 | ||
883 | /* run time endian detection */ | |
884 | if (csum != htons(csum)) /* little endian */ | |
885 | csum = htons(csum); | |
886 | ||
887 | return csum; | |
888 | } | |
889 | ||
890 | int CDPSendTrigger(void) | |
891 | { | |
892 | volatile uchar *pkt; | |
893 | volatile ushort *s; | |
894 | volatile ushort *cp; | |
895 | Ethernet_t *et; | |
a3d991bd WD |
896 | int len; |
897 | ushort chksum; | |
4f63acd0 LC |
898 | #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \ |
899 | defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM) | |
6e592385 WD |
900 | char buf[32]; |
901 | #endif | |
a3d991bd WD |
902 | |
903 | pkt = NetTxPacket; | |
904 | et = (Ethernet_t *)pkt; | |
905 | ||
906 | /* NOTE: trigger sent not on any VLAN */ | |
907 | ||
908 | /* form ethernet header */ | |
909 | memcpy(et->et_dest, NetCDPAddr, 6); | |
910 | memcpy(et->et_src, NetOurEther, 6); | |
911 | ||
912 | pkt += ETHER_HDR_SIZE; | |
913 | ||
914 | /* SNAP header */ | |
915 | memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)); | |
916 | pkt += sizeof(CDP_SNAP_hdr); | |
917 | ||
918 | /* CDP header */ | |
919 | *pkt++ = 0x02; /* CDP version 2 */ | |
920 | *pkt++ = 180; /* TTL */ | |
921 | s = (volatile ushort *)pkt; | |
922 | cp = s; | |
3e38e429 LC |
923 | /* checksum (0 for later calculation) */ |
924 | *s++ = htons(0); | |
a3d991bd WD |
925 | |
926 | /* CDP fields */ | |
927 | #ifdef CONFIG_CDP_DEVICE_ID | |
928 | *s++ = htons(CDP_DEVICE_ID_TLV); | |
929 | *s++ = htons(CONFIG_CDP_DEVICE_ID); | |
95823ca0 | 930 | sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%pm", NetOurEther); |
a3d991bd WD |
931 | memcpy((uchar *)s, buf, 16); |
932 | s += 16 / 2; | |
933 | #endif | |
934 | ||
935 | #ifdef CONFIG_CDP_PORT_ID | |
936 | *s++ = htons(CDP_PORT_ID_TLV); | |
937 | memset(buf, 0, sizeof(buf)); | |
938 | sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index()); | |
939 | len = strlen(buf); | |
940 | if (len & 1) /* make it even */ | |
941 | len++; | |
942 | *s++ = htons(len + 4); | |
943 | memcpy((uchar *)s, buf, len); | |
944 | s += len / 2; | |
945 | #endif | |
946 | ||
947 | #ifdef CONFIG_CDP_CAPABILITIES | |
948 | *s++ = htons(CDP_CAPABILITIES_TLV); | |
949 | *s++ = htons(8); | |
950 | *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES); | |
951 | s += 2; | |
952 | #endif | |
953 | ||
954 | #ifdef CONFIG_CDP_VERSION | |
955 | *s++ = htons(CDP_VERSION_TLV); | |
956 | memset(buf, 0, sizeof(buf)); | |
957 | strcpy(buf, CONFIG_CDP_VERSION); | |
958 | len = strlen(buf); | |
959 | if (len & 1) /* make it even */ | |
960 | len++; | |
961 | *s++ = htons(len + 4); | |
962 | memcpy((uchar *)s, buf, len); | |
963 | s += len / 2; | |
964 | #endif | |
965 | ||
966 | #ifdef CONFIG_CDP_PLATFORM | |
967 | *s++ = htons(CDP_PLATFORM_TLV); | |
968 | memset(buf, 0, sizeof(buf)); | |
969 | strcpy(buf, CONFIG_CDP_PLATFORM); | |
970 | len = strlen(buf); | |
971 | if (len & 1) /* make it even */ | |
972 | len++; | |
973 | *s++ = htons(len + 4); | |
974 | memcpy((uchar *)s, buf, len); | |
975 | s += len / 2; | |
976 | #endif | |
977 | ||
978 | #ifdef CONFIG_CDP_TRIGGER | |
979 | *s++ = htons(CDP_TRIGGER_TLV); | |
980 | *s++ = htons(8); | |
981 | *(ulong *)s = htonl(CONFIG_CDP_TRIGGER); | |
982 | s += 2; | |
983 | #endif | |
984 | ||
985 | #ifdef CONFIG_CDP_POWER_CONSUMPTION | |
986 | *s++ = htons(CDP_POWER_CONSUMPTION_TLV); | |
987 | *s++ = htons(6); | |
988 | *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION); | |
989 | #endif | |
990 | ||
991 | /* length of ethernet packet */ | |
992 | len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE); | |
993 | et->et_protlen = htons(len); | |
994 | ||
995 | len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr); | |
3e38e429 LC |
996 | chksum = CDP_compute_csum((uchar *)NetTxPacket + len, |
997 | (uchar *)s - (NetTxPacket + len)); | |
a3d991bd WD |
998 | if (chksum == 0) |
999 | chksum = 0xFFFF; | |
1000 | *cp = htons(chksum); | |
1001 | ||
1002 | (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket); | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | static void | |
4f63acd0 | 1007 | CDPTimeout(void) |
a3d991bd WD |
1008 | { |
1009 | CDPSeq++; | |
1010 | ||
1011 | if (CDPSeq < 3) { | |
4f63acd0 | 1012 | NetSetTimeout(CDP_TIMEOUT, CDPTimeout); |
a3d991bd WD |
1013 | CDPSendTrigger(); |
1014 | return; | |
1015 | } | |
1016 | ||
1017 | /* if not OK try again */ | |
1018 | if (!CDPOK) | |
1019 | NetStartAgain(); | |
1020 | else | |
1021 | NetState = NETLOOP_SUCCESS; | |
1022 | } | |
1023 | ||
1024 | static void | |
03eb129f LC |
1025 | CDPDummyHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, |
1026 | unsigned len) | |
a3d991bd WD |
1027 | { |
1028 | /* nothing */ | |
1029 | } | |
1030 | ||
1031 | static void | |
6b147d11 | 1032 | CDPHandler(const uchar *pkt, unsigned len) |
a3d991bd WD |
1033 | { |
1034 | const uchar *t; | |
1035 | const ushort *ss; | |
1036 | ushort type, tlen; | |
1037 | uchar applid; | |
1038 | ushort vlan, nvlan; | |
1039 | ||
1040 | /* minimum size? */ | |
1041 | if (len < sizeof(CDP_SNAP_hdr) + 4) | |
1042 | goto pkt_short; | |
1043 | ||
1044 | /* check for valid CDP SNAP header */ | |
1045 | if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0) | |
1046 | return; | |
1047 | ||
1048 | pkt += sizeof(CDP_SNAP_hdr); | |
1049 | len -= sizeof(CDP_SNAP_hdr); | |
1050 | ||
1051 | /* Version of CDP protocol must be >= 2 and TTL != 0 */ | |
1052 | if (pkt[0] < 0x02 || pkt[1] == 0) | |
1053 | return; | |
1054 | ||
3e38e429 LC |
1055 | /* |
1056 | * if version is greater than 0x02 maybe we'll have a problem; | |
1057 | * output a warning | |
1058 | */ | |
a3d991bd WD |
1059 | if (pkt[0] != 0x02) |
1060 | printf("** WARNING: CDP packet received with a protocol version %d > 2\n", | |
1061 | pkt[0] & 0xff); | |
1062 | ||
1063 | if (CDP_compute_csum(pkt, len) != 0) | |
1064 | return; | |
1065 | ||
1066 | pkt += 4; | |
1067 | len -= 4; | |
1068 | ||
1069 | vlan = htons(-1); | |
1070 | nvlan = htons(-1); | |
1071 | while (len > 0) { | |
1072 | if (len < 4) | |
1073 | goto pkt_short; | |
1074 | ||
1075 | ss = (const ushort *)pkt; | |
1076 | type = ntohs(ss[0]); | |
1077 | tlen = ntohs(ss[1]); | |
d3c65b01 | 1078 | if (tlen > len) |
a3d991bd | 1079 | goto pkt_short; |
a3d991bd WD |
1080 | |
1081 | pkt += tlen; | |
1082 | len -= tlen; | |
1083 | ||
1084 | ss += 2; /* point ss to the data of the TLV */ | |
1085 | tlen -= 4; | |
1086 | ||
1087 | switch (type) { | |
c819abee LC |
1088 | case CDP_DEVICE_ID_TLV: |
1089 | break; | |
1090 | case CDP_ADDRESS_TLV: | |
1091 | break; | |
1092 | case CDP_PORT_ID_TLV: | |
1093 | break; | |
1094 | case CDP_CAPABILITIES_TLV: | |
1095 | break; | |
1096 | case CDP_VERSION_TLV: | |
1097 | break; | |
1098 | case CDP_PLATFORM_TLV: | |
1099 | break; | |
1100 | case CDP_NATIVE_VLAN_TLV: | |
1101 | nvlan = *ss; | |
1102 | break; | |
1103 | case CDP_APPLIANCE_VLAN_TLV: | |
1104 | t = (const uchar *)ss; | |
1105 | while (tlen > 0) { | |
1106 | if (tlen < 3) | |
1107 | goto pkt_short; | |
a3d991bd | 1108 | |
c819abee LC |
1109 | applid = t[0]; |
1110 | ss = (const ushort *)(t + 1); | |
a3d991bd WD |
1111 | |
1112 | #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE | |
c819abee LC |
1113 | if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE) |
1114 | vlan = *ss; | |
a3d991bd | 1115 | #else |
c819abee LC |
1116 | /* XXX will this work; dunno */ |
1117 | vlan = ntohs(*ss); | |
a3d991bd | 1118 | #endif |
c819abee LC |
1119 | t += 3; tlen -= 3; |
1120 | } | |
1121 | break; | |
1122 | case CDP_TRIGGER_TLV: | |
1123 | break; | |
1124 | case CDP_POWER_CONSUMPTION_TLV: | |
1125 | break; | |
1126 | case CDP_SYSNAME_TLV: | |
1127 | break; | |
1128 | case CDP_SYSOBJECT_TLV: | |
1129 | break; | |
1130 | case CDP_MANAGEMENT_ADDRESS_TLV: | |
1131 | break; | |
a3d991bd WD |
1132 | } |
1133 | } | |
1134 | ||
1135 | CDPApplianceVLAN = vlan; | |
1136 | CDPNativeVLAN = nvlan; | |
1137 | ||
1138 | CDPOK = 1; | |
1139 | return; | |
1140 | ||
1141 | pkt_short: | |
1142 | printf("** CDP packet is too short\n"); | |
1143 | return; | |
1144 | } | |
1145 | ||
1146 | static void CDPStart(void) | |
1147 | { | |
4f63acd0 | 1148 | printf("Using %s device\n", eth_get_name()); |
a3d991bd WD |
1149 | CDPSeq = 0; |
1150 | CDPOK = 0; | |
1151 | ||
1152 | CDPNativeVLAN = htons(-1); | |
1153 | CDPApplianceVLAN = htons(-1); | |
1154 | ||
4f63acd0 LC |
1155 | NetSetTimeout(CDP_TIMEOUT, CDPTimeout); |
1156 | NetSetHandler(CDPDummyHandler); | |
a3d991bd WD |
1157 | |
1158 | CDPSendTrigger(); | |
1159 | } | |
610f2e9c | 1160 | #endif |
a3d991bd | 1161 | |
5cfaa4e5 AR |
1162 | #ifdef CONFIG_IP_DEFRAG |
1163 | /* | |
1164 | * This function collects fragments in a single packet, according | |
1165 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
1166 | * a complete packet, in static storage | |
1167 | */ | |
1168 | #ifndef CONFIG_NET_MAXDEFRAG | |
1169 | #define CONFIG_NET_MAXDEFRAG 16384 | |
1170 | #endif | |
1171 | /* | |
1172 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
1173 | * so we need to add the NFS overhead, which is more than TFTP. | |
1174 | * To use sizeof in the internal unnamed structures, we need a real | |
1175 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
1176 | * The compiler doesn't complain nor allocates the actual structure | |
1177 | */ | |
1178 | static struct rpc_t rpc_specimen; | |
1179 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
1180 | ||
1181 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP) | |
1182 | ||
1183 | /* | |
1184 | * this is the packet being assembled, either data or frag control. | |
1185 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
1186 | */ | |
1187 | struct hole { | |
1188 | /* first_byte is address of this structure */ | |
1189 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
1190 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
1191 | u16 prev_hole; /* index of prev, 0 == none */ | |
1192 | u16 unused; | |
1193 | }; | |
1194 | ||
1195 | static IP_t *__NetDefragment(IP_t *ip, int *lenp) | |
1196 | { | |
1197 | static uchar pkt_buff[IP_PKTSIZE] __attribute__((aligned(PKTALIGN))); | |
1198 | static u16 first_hole, total_len; | |
1199 | struct hole *payload, *thisfrag, *h, *newh; | |
1200 | IP_t *localip = (IP_t *)pkt_buff; | |
1201 | uchar *indata = (uchar *)ip; | |
1202 | int offset8, start, len, done = 0; | |
1203 | u16 ip_off = ntohs(ip->ip_off); | |
1204 | ||
1205 | /* payload starts after IP header, this fragment is in there */ | |
1206 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE_NO_UDP); | |
1207 | offset8 = (ip_off & IP_OFFS); | |
1208 | thisfrag = payload + offset8; | |
1209 | start = offset8 * 8; | |
1210 | len = ntohs(ip->ip_len) - IP_HDR_SIZE_NO_UDP; | |
1211 | ||
1212 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
1213 | return NULL; | |
1214 | ||
1215 | if (!total_len || localip->ip_id != ip->ip_id) { | |
1216 | /* new (or different) packet, reset structs */ | |
1217 | total_len = 0xffff; | |
1218 | payload[0].last_byte = ~0; | |
1219 | payload[0].next_hole = 0; | |
1220 | payload[0].prev_hole = 0; | |
1221 | first_hole = 0; | |
1222 | /* any IP header will work, copy the first we received */ | |
1223 | memcpy(localip, ip, IP_HDR_SIZE_NO_UDP); | |
1224 | } | |
1225 | ||
1226 | /* | |
1227 | * What follows is the reassembly algorithm. We use the payload | |
1228 | * array as a linked list of hole descriptors, as each hole starts | |
1229 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
1230 | * so it is represented as byte count, not as 8-byte blocks. | |
1231 | */ | |
1232 | ||
1233 | h = payload + first_hole; | |
1234 | while (h->last_byte < start) { | |
1235 | if (!h->next_hole) { | |
1236 | /* no hole that far away */ | |
1237 | return NULL; | |
1238 | } | |
1239 | h = payload + h->next_hole; | |
1240 | } | |
1241 | ||
e397e59e FS |
1242 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
1243 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
1244 | /* no overlap with holes (dup fragment?) */ |
1245 | return NULL; | |
1246 | } | |
1247 | ||
1248 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
1249 | /* no more fragmentss: truncate this (last) hole */ | |
1250 | total_len = start + len; | |
1251 | h->last_byte = start + len; | |
1252 | } | |
1253 | ||
1254 | /* | |
1255 | * There is some overlap: fix the hole list. This code doesn't | |
1256 | * deal with a fragment that overlaps with two different holes | |
1257 | * (thus being a superset of a previously-received fragment). | |
1258 | */ | |
1259 | ||
4f63acd0 | 1260 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
1261 | /* complete overlap with hole: remove hole */ |
1262 | if (!h->prev_hole && !h->next_hole) { | |
1263 | /* last remaining hole */ | |
1264 | done = 1; | |
1265 | } else if (!h->prev_hole) { | |
1266 | /* first hole */ | |
1267 | first_hole = h->next_hole; | |
1268 | payload[h->next_hole].prev_hole = 0; | |
1269 | } else if (!h->next_hole) { | |
1270 | /* last hole */ | |
1271 | payload[h->prev_hole].next_hole = 0; | |
1272 | } else { | |
1273 | /* in the middle of the list */ | |
1274 | payload[h->next_hole].prev_hole = h->prev_hole; | |
1275 | payload[h->prev_hole].next_hole = h->next_hole; | |
1276 | } | |
1277 | ||
1278 | } else if (h->last_byte <= start + len) { | |
1279 | /* overlaps with final part of the hole: shorten this hole */ | |
1280 | h->last_byte = start; | |
1281 | ||
1282 | } else if (h >= thisfrag) { | |
1283 | /* overlaps with initial part of the hole: move this hole */ | |
1284 | newh = thisfrag + (len / 8); | |
1285 | *newh = *h; | |
1286 | h = newh; | |
1287 | if (h->next_hole) | |
1288 | payload[h->next_hole].prev_hole = (h - payload); | |
1289 | if (h->prev_hole) | |
1290 | payload[h->prev_hole].next_hole = (h - payload); | |
1291 | else | |
1292 | first_hole = (h - payload); | |
1293 | ||
1294 | } else { | |
1295 | /* fragment sits in the middle: split the hole */ | |
1296 | newh = thisfrag + (len / 8); | |
1297 | *newh = *h; | |
1298 | h->last_byte = start; | |
1299 | h->next_hole = (newh - payload); | |
1300 | newh->prev_hole = (h - payload); | |
1301 | if (newh->next_hole) | |
1302 | payload[newh->next_hole].prev_hole = (newh - payload); | |
1303 | } | |
1304 | ||
1305 | /* finally copy this fragment and possibly return whole packet */ | |
1306 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE_NO_UDP, len); | |
1307 | if (!done) | |
1308 | return NULL; | |
1309 | ||
1310 | localip->ip_len = htons(total_len); | |
1311 | *lenp = total_len + IP_HDR_SIZE_NO_UDP; | |
1312 | return localip; | |
1313 | } | |
1314 | ||
1315 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
1316 | { | |
1317 | u16 ip_off = ntohs(ip->ip_off); | |
1318 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1319 | return ip; /* not a fragment */ | |
1320 | return __NetDefragment(ip, lenp); | |
1321 | } | |
1322 | ||
1323 | #else /* !CONFIG_IP_DEFRAG */ | |
1324 | ||
1325 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
1326 | { | |
1327 | u16 ip_off = ntohs(ip->ip_off); | |
1328 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1329 | return ip; /* not a fragment */ | |
1330 | return NULL; | |
1331 | } | |
1332 | #endif | |
a3d991bd | 1333 | |
8f79bb17 SG |
1334 | /** |
1335 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
1336 | * drop others. | |
1337 | * | |
1338 | * @parma ip IP packet containing the ICMP | |
1339 | */ | |
1340 | static void receive_icmp(IP_t *ip, int len, IPaddr_t src_ip, Ethernet_t *et) | |
1341 | { | |
1342 | ICMP_t *icmph = (ICMP_t *)&ip->udp_src; | |
1343 | ||
1344 | switch (icmph->type) { | |
1345 | case ICMP_REDIRECT: | |
1346 | if (icmph->code != ICMP_REDIR_HOST) | |
1347 | return; | |
1348 | printf(" ICMP Host Redirect to %pI4 ", | |
1349 | &icmph->un.gateway); | |
1350 | break; | |
1351 | #if defined(CONFIG_CMD_PING) | |
1352 | case ICMP_ECHO_REPLY: | |
1353 | /* | |
1354 | * IP header OK. Pass the packet to the | |
1355 | * current handler. | |
1356 | */ | |
1357 | /* | |
1358 | * XXX point to ip packet - should this use | |
1359 | * packet_icmp_handler? | |
1360 | */ | |
1361 | (*packetHandler)((uchar *)ip, 0, src_ip, 0, 0); | |
1362 | break; | |
1363 | case ICMP_ECHO_REQUEST: | |
1364 | debug("Got ICMP ECHO REQUEST, return %d bytes\n", | |
1365 | ETHER_HDR_SIZE + len); | |
1366 | ||
1367 | memcpy(&et->et_dest[0], &et->et_src[0], 6); | |
1368 | memcpy(&et->et_src[0], NetOurEther, 6); | |
1369 | ||
1370 | ip->ip_sum = 0; | |
1371 | ip->ip_off = 0; | |
1372 | NetCopyIP((void *)&ip->ip_dst, &ip->ip_src); | |
1373 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); | |
1374 | ip->ip_sum = ~NetCksum((uchar *)ip, | |
1375 | IP_HDR_SIZE_NO_UDP >> 1); | |
1376 | ||
1377 | icmph->type = ICMP_ECHO_REPLY; | |
1378 | icmph->checksum = 0; | |
1379 | icmph->checksum = ~NetCksum((uchar *)icmph, | |
1380 | (len - IP_HDR_SIZE_NO_UDP) >> 1); | |
1381 | (void) eth_send((uchar *)et, | |
1382 | ETHER_HDR_SIZE + len); | |
1383 | break; | |
1384 | #endif | |
1385 | default: | |
1386 | break; | |
1387 | } | |
1388 | } | |
1389 | ||
2d966958 | 1390 | void |
6b147d11 | 1391 | NetReceive(volatile uchar *inpkt, int len) |
2d966958 WD |
1392 | { |
1393 | Ethernet_t *et; | |
1394 | IP_t *ip; | |
1395 | ARP_t *arp; | |
1396 | IPaddr_t tmp; | |
03eb129f | 1397 | IPaddr_t src_ip; |
2d966958 | 1398 | int x; |
a3d991bd | 1399 | uchar *pkt; |
643d1ab2 | 1400 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1401 | int iscdp; |
1402 | #endif | |
1403 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1404 | ||
0ebf04c6 | 1405 | debug("packet received\n"); |
2d966958 | 1406 | |
d9bec9f4 MF |
1407 | NetRxPacket = inpkt; |
1408 | NetRxPacketLen = len; | |
a3d991bd WD |
1409 | et = (Ethernet_t *)inpkt; |
1410 | ||
1411 | /* too small packet? */ | |
1412 | if (len < ETHER_HDR_SIZE) | |
1413 | return; | |
1414 | ||
f85b6071 RJ |
1415 | #ifdef CONFIG_API |
1416 | if (push_packet) { | |
1417 | (*push_packet)(inpkt, len); | |
1418 | return; | |
1419 | } | |
1420 | #endif | |
1421 | ||
643d1ab2 | 1422 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1423 | /* keep track if packet is CDP */ |
1424 | iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0; | |
1425 | #endif | |
1426 | ||
1427 | myvlanid = ntohs(NetOurVLAN); | |
1428 | if (myvlanid == (ushort)-1) | |
1429 | myvlanid = VLAN_NONE; | |
1430 | mynvlanid = ntohs(NetOurNativeVLAN); | |
1431 | if (mynvlanid == (ushort)-1) | |
1432 | mynvlanid = VLAN_NONE; | |
2d966958 WD |
1433 | |
1434 | x = ntohs(et->et_protlen); | |
1435 | ||
0ebf04c6 | 1436 | debug("packet received\n"); |
a3d991bd | 1437 | |
2d966958 WD |
1438 | if (x < 1514) { |
1439 | /* | |
1440 | * Got a 802 packet. Check the other protocol field. | |
1441 | */ | |
1442 | x = ntohs(et->et_prot); | |
a3d991bd WD |
1443 | |
1444 | ip = (IP_t *)(inpkt + E802_HDR_SIZE); | |
2d966958 | 1445 | len -= E802_HDR_SIZE; |
a3d991bd WD |
1446 | |
1447 | } else if (x != PROT_VLAN) { /* normal packet */ | |
1448 | ip = (IP_t *)(inpkt + ETHER_HDR_SIZE); | |
2d966958 | 1449 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1450 | |
1451 | } else { /* VLAN packet */ | |
1452 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et; | |
1453 | ||
0ebf04c6 RG |
1454 | debug("VLAN packet received\n"); |
1455 | ||
a3d991bd WD |
1456 | /* too small packet? */ |
1457 | if (len < VLAN_ETHER_HDR_SIZE) | |
1458 | return; | |
1459 | ||
1460 | /* if no VLAN active */ | |
1461 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
643d1ab2 | 1462 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1463 | && iscdp == 0 |
1464 | #endif | |
1465 | ) | |
1466 | return; | |
1467 | ||
1468 | cti = ntohs(vet->vet_tag); | |
1469 | vlanid = cti & VLAN_IDMASK; | |
1470 | x = ntohs(vet->vet_type); | |
1471 | ||
1472 | ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE); | |
1473 | len -= VLAN_ETHER_HDR_SIZE; | |
2d966958 WD |
1474 | } |
1475 | ||
0ebf04c6 | 1476 | debug("Receive from protocol 0x%x\n", x); |
2d966958 | 1477 | |
643d1ab2 | 1478 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1479 | if (iscdp) { |
1480 | CDPHandler((uchar *)ip, len); | |
1481 | return; | |
1482 | } | |
1483 | #endif | |
1484 | ||
1485 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1486 | if (vlanid == VLAN_NONE) | |
1487 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1488 | /* not matched? */ | |
1489 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1490 | return; | |
1491 | } | |
1492 | ||
2d966958 WD |
1493 | switch (x) { |
1494 | ||
1495 | case PROT_ARP: | |
1496 | /* | |
1497 | * We have to deal with two types of ARP packets: | |
8bde7f77 WD |
1498 | * - REQUEST packets will be answered by sending our |
1499 | * IP address - if we know it. | |
1500 | * - REPLY packates are expected only after we asked | |
1501 | * for the TFTP server's or the gateway's ethernet | |
1502 | * address; so if we receive such a packet, we set | |
1503 | * the server ethernet address | |
2d966958 | 1504 | */ |
0ebf04c6 RG |
1505 | debug("Got ARP\n"); |
1506 | ||
2d966958 WD |
1507 | arp = (ARP_t *)ip; |
1508 | if (len < ARP_HDR_SIZE) { | |
1509 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1510 | return; | |
1511 | } | |
d3c65b01 | 1512 | if (ntohs(arp->ar_hrd) != ARP_ETHER) |
2d966958 | 1513 | return; |
d3c65b01 | 1514 | if (ntohs(arp->ar_pro) != PROT_IP) |
2d966958 | 1515 | return; |
d3c65b01 | 1516 | if (arp->ar_hln != 6) |
2d966958 | 1517 | return; |
d3c65b01 | 1518 | if (arp->ar_pln != 4) |
2d966958 | 1519 | return; |
2d966958 | 1520 | |
d3c65b01 | 1521 | if (NetOurIP == 0) |
2d966958 | 1522 | return; |
2d966958 | 1523 | |
d3c65b01 | 1524 | if (NetReadIP(&arp->ar_data[16]) != NetOurIP) |
2d966958 | 1525 | return; |
2d966958 WD |
1526 | |
1527 | switch (ntohs(arp->ar_op)) { | |
3e38e429 LC |
1528 | case ARPOP_REQUEST: |
1529 | /* reply with our IP address */ | |
0ebf04c6 | 1530 | debug("Got ARP REQUEST, return our IP\n"); |
a3d991bd WD |
1531 | pkt = (uchar *)et; |
1532 | pkt += NetSetEther(pkt, et->et_src, PROT_ARP); | |
2d966958 | 1533 | arp->ar_op = htons(ARPOP_REPLY); |
4f63acd0 | 1534 | memcpy(&arp->ar_data[10], &arp->ar_data[0], 6); |
2d966958 | 1535 | NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]); |
4f63acd0 LC |
1536 | memcpy(&arp->ar_data[0], NetOurEther, 6); |
1537 | NetCopyIP(&arp->ar_data[6], &NetOurIP); | |
3e38e429 LC |
1538 | (void) eth_send((uchar *)et, |
1539 | (pkt - (uchar *)et) + ARP_HDR_SIZE); | |
2d966958 | 1540 | return; |
73a8b27c WD |
1541 | |
1542 | case ARPOP_REPLY: /* arp reply */ | |
1543 | /* are we waiting for a reply */ | |
1544 | if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC) | |
1545 | break; | |
97cfe861 RG |
1546 | |
1547 | #ifdef CONFIG_KEEP_SERVERADDR | |
1548 | if (NetServerIP == NetArpWaitPacketIP) { | |
1549 | char buf[20]; | |
1550 | sprintf(buf, "%pM", arp->ar_data); | |
1551 | setenv("serveraddr", buf); | |
1552 | } | |
1553 | #endif | |
1554 | ||
0ebf04c6 | 1555 | debug("Got ARP REPLY, set server/gtwy eth addr (%pM)\n", |
95823ca0 | 1556 | arp->ar_data); |
73a8b27c WD |
1557 | |
1558 | tmp = NetReadIP(&arp->ar_data[6]); | |
1559 | ||
1560 | /* matched waiting packet's address */ | |
1561 | if (tmp == NetArpWaitReplyIP) { | |
0ebf04c6 | 1562 | debug("Got it\n"); |
73a8b27c | 1563 | /* save address for later use */ |
3e38e429 LC |
1564 | memcpy(NetArpWaitPacketMAC, |
1565 | &arp->ar_data[0], 6); | |
73a8b27c | 1566 | |
68ceb29e | 1567 | #ifdef CONFIG_NETCONSOLE |
03eb129f | 1568 | (*packetHandler)(0, 0, 0, 0, 0); |
68ceb29e | 1569 | #endif |
73a8b27c WD |
1570 | /* modify header, and transmit it */ |
1571 | memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6); | |
3e38e429 LC |
1572 | (void) eth_send(NetArpWaitTxPacket, |
1573 | NetArpWaitTxPacketSize); | |
73a8b27c WD |
1574 | |
1575 | /* no arp request pending now */ | |
1576 | NetArpWaitPacketIP = 0; | |
1577 | NetArpWaitTxPacketSize = 0; | |
1578 | NetArpWaitPacketMAC = NULL; | |
1579 | ||
1580 | } | |
2d966958 WD |
1581 | return; |
1582 | default: | |
3e38e429 LC |
1583 | debug("Unexpected ARP opcode 0x%x\n", |
1584 | ntohs(arp->ar_op)); | |
2d966958 WD |
1585 | return; |
1586 | } | |
289f932c | 1587 | break; |
2d966958 | 1588 | |
bf6cb247 | 1589 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1590 | case PROT_RARP: |
0ebf04c6 | 1591 | debug("Got RARP\n"); |
2d966958 WD |
1592 | arp = (ARP_t *)ip; |
1593 | if (len < ARP_HDR_SIZE) { | |
1594 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1595 | return; | |
1596 | } | |
1597 | ||
1598 | if ((ntohs(arp->ar_op) != RARPOP_REPLY) || | |
1599 | (ntohs(arp->ar_hrd) != ARP_ETHER) || | |
1600 | (ntohs(arp->ar_pro) != PROT_IP) || | |
1601 | (arp->ar_hln != 6) || (arp->ar_pln != 4)) { | |
1602 | ||
4f63acd0 | 1603 | puts("invalid RARP header\n"); |
2d966958 | 1604 | } else { |
4f63acd0 | 1605 | NetCopyIP(&NetOurIP, &arp->ar_data[16]); |
3d3befa7 | 1606 | if (NetServerIP == 0) |
4f63acd0 LC |
1607 | NetCopyIP(&NetServerIP, &arp->ar_data[6]); |
1608 | memcpy(NetServerEther, &arp->ar_data[0], 6); | |
2d966958 | 1609 | |
03eb129f | 1610 | (*packetHandler)(0, 0, 0, 0, 0); |
2d966958 WD |
1611 | } |
1612 | break; | |
bf6cb247 | 1613 | #endif |
2d966958 | 1614 | case PROT_IP: |
0ebf04c6 | 1615 | debug("Got IP\n"); |
5cfaa4e5 | 1616 | /* Before we start poking the header, make sure it is there */ |
2d966958 | 1617 | if (len < IP_HDR_SIZE) { |
0ebf04c6 | 1618 | debug("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE); |
2d966958 WD |
1619 | return; |
1620 | } | |
5cfaa4e5 | 1621 | /* Check the packet length */ |
2d966958 WD |
1622 | if (len < ntohs(ip->ip_len)) { |
1623 | printf("len bad %d < %d\n", len, ntohs(ip->ip_len)); | |
1624 | return; | |
1625 | } | |
1626 | len = ntohs(ip->ip_len); | |
0ebf04c6 RG |
1627 | debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff); |
1628 | ||
5cfaa4e5 | 1629 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1630 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1631 | return; |
5cfaa4e5 | 1632 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 1633 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 1634 | return; |
5cfaa4e5 | 1635 | /* Check the Checksum of the header */ |
2d966958 | 1636 | if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) { |
4f63acd0 | 1637 | puts("checksum bad\n"); |
2d966958 WD |
1638 | return; |
1639 | } | |
5cfaa4e5 | 1640 | /* If it is not for us, ignore it */ |
2d966958 WD |
1641 | tmp = NetReadIP(&ip->ip_dst); |
1642 | if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) { | |
53a5c424 | 1643 | #ifdef CONFIG_MCAST_TFTP |
85eb5caf | 1644 | if (Mcast_addr != tmp) |
53a5c424 | 1645 | #endif |
c819abee | 1646 | return; |
2d966958 | 1647 | } |
03eb129f LC |
1648 | /* Read source IP address for later use */ |
1649 | src_ip = NetReadIP(&ip->ip_src); | |
5cfaa4e5 AR |
1650 | /* |
1651 | * The function returns the unchanged packet if it's not | |
1652 | * a fragment, and either the complete packet or NULL if | |
1653 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1654 | */ | |
ccb9ebef LC |
1655 | ip = NetDefragment(ip, &len); |
1656 | if (!ip) | |
5cfaa4e5 | 1657 | return; |
2d966958 WD |
1658 | /* |
1659 | * watch for ICMP host redirects | |
1660 | * | |
8bde7f77 WD |
1661 | * There is no real handler code (yet). We just watch |
1662 | * for ICMP host redirect messages. In case anybody | |
1663 | * sees these messages: please contact me | |
1664 | * (wd@denx.de), or - even better - send me the | |
1665 | * necessary fixes :-) | |
2d966958 | 1666 | * |
8bde7f77 WD |
1667 | * Note: in all cases where I have seen this so far |
1668 | * it was a problem with the router configuration, | |
1669 | * for instance when a router was configured in the | |
1670 | * BOOTP reply, but the TFTP server was on the same | |
1671 | * subnet. So this is probably a warning that your | |
1672 | * configuration might be wrong. But I'm not really | |
1673 | * sure if there aren't any other situations. | |
2d966958 WD |
1674 | */ |
1675 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1676 | receive_icmp(ip, len, src_ip, et); |
1677 | return; | |
2d966958 WD |
1678 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1679 | return; | |
1680 | } | |
1681 | ||
8534bf9a SR |
1682 | #ifdef CONFIG_UDP_CHECKSUM |
1683 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1684 | ulong xsum; |
8534bf9a SR |
1685 | ushort *sumptr; |
1686 | ushort sumlen; | |
1687 | ||
1688 | xsum = ip->ip_p; | |
1689 | xsum += (ntohs(ip->udp_len)); | |
1690 | xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff; | |
1691 | xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff; | |
1692 | xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff; | |
1693 | xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff; | |
1694 | ||
1695 | sumlen = ntohs(ip->udp_len); | |
1696 | sumptr = (ushort *) &(ip->udp_src); | |
1697 | ||
1698 | while (sumlen > 1) { | |
b2f50807 | 1699 | ushort sumdata; |
8534bf9a SR |
1700 | |
1701 | sumdata = *sumptr++; | |
1702 | xsum += ntohs(sumdata); | |
1703 | sumlen -= 2; | |
1704 | } | |
1705 | if (sumlen > 0) { | |
b2f50807 | 1706 | ushort sumdata; |
8534bf9a SR |
1707 | |
1708 | sumdata = *(unsigned char *) sumptr; | |
b2f50807 | 1709 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1710 | xsum += sumdata; |
1711 | } | |
1712 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1713 | xsum = (xsum & 0x0000ffff) + |
1714 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1715 | } |
1716 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 WD |
1717 | printf(" UDP wrong checksum %08lx %08x\n", |
1718 | xsum, ntohs(ip->udp_xsum)); | |
8534bf9a SR |
1719 | return; |
1720 | } | |
1721 | } | |
1722 | #endif | |
1723 | ||
53a5c424 | 1724 | |
68ceb29e | 1725 | #ifdef CONFIG_NETCONSOLE |
4f63acd0 | 1726 | nc_input_packet((uchar *)ip + IP_HDR_SIZE, |
68ceb29e WD |
1727 | ntohs(ip->udp_dst), |
1728 | ntohs(ip->udp_src), | |
1729 | ntohs(ip->udp_len) - 8); | |
1730 | #endif | |
2d966958 WD |
1731 | /* |
1732 | * IP header OK. Pass the packet to the current handler. | |
1733 | */ | |
4f63acd0 | 1734 | (*packetHandler)((uchar *)ip + IP_HDR_SIZE, |
2d966958 | 1735 | ntohs(ip->udp_dst), |
03eb129f | 1736 | src_ip, |
2d966958 WD |
1737 | ntohs(ip->udp_src), |
1738 | ntohs(ip->udp_len) - 8); | |
2d966958 WD |
1739 | break; |
1740 | } | |
1741 | } | |
1742 | ||
1743 | ||
1744 | /**********************************************************************/ | |
1745 | ||
4f63acd0 | 1746 | static int net_check_prereq(proto_t protocol) |
2d966958 WD |
1747 | { |
1748 | switch (protocol) { | |
6e592385 | 1749 | /* Fall through */ |
643d1ab2 | 1750 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1751 | case PING: |
6e592385 | 1752 | if (NetPingIP == 0) { |
4f63acd0 | 1753 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1754 | return 1; |
6e592385 WD |
1755 | } |
1756 | goto common; | |
cbd8a35c | 1757 | #endif |
643d1ab2 | 1758 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
1759 | case SNTP: |
1760 | if (NetNtpServerIP == 0) { | |
4f63acd0 | 1761 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1762 | return 1; |
ea287deb WD |
1763 | } |
1764 | goto common; | |
1765 | #endif | |
1a32bf41 RG |
1766 | #if defined(CONFIG_CMD_DNS) |
1767 | case DNS: | |
1768 | if (NetOurDNSIP == 0) { | |
1769 | puts("*** ERROR: DNS server address not given\n"); | |
1770 | return 1; | |
1771 | } | |
1772 | goto common; | |
1773 | #endif | |
643d1ab2 | 1774 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1775 | case NFS: |
73a8b27c | 1776 | #endif |
2d966958 | 1777 | case TFTP: |
6e592385 | 1778 | if (NetServerIP == 0) { |
4f63acd0 | 1779 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1780 | return 1; |
6e592385 | 1781 | } |
4f63acd0 LC |
1782 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1783 | defined(CONFIG_CMD_DNS) | |
1784 | common: | |
73a8b27c | 1785 | #endif |
8b6bbe10 | 1786 | /* Fall through */ |
73a8b27c | 1787 | |
8b6bbe10 | 1788 | case NETCONS: |
7a83af07 | 1789 | case TFTPSRV: |
6e592385 | 1790 | if (NetOurIP == 0) { |
4f63acd0 | 1791 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1792 | return 1; |
6e592385 WD |
1793 | } |
1794 | /* Fall through */ | |
2d966958 | 1795 | |
bf6cb247 | 1796 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1797 | case RARP: |
bf6cb247 | 1798 | #endif |
2d966958 | 1799 | case BOOTP: |
a3d991bd | 1800 | case CDP: |
bf6cb247 | 1801 | case DHCP: |
4f63acd0 | 1802 | if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 LC |
1803 | extern int eth_get_dev_index(void); |
1804 | int num = eth_get_dev_index(); | |
2d966958 | 1805 | |
6e592385 WD |
1806 | switch (num) { |
1807 | case -1: | |
4f63acd0 | 1808 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1809 | return 1; |
6e592385 | 1810 | case 0: |
4f63acd0 | 1811 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1812 | break; |
6e592385 | 1813 | default: |
4f63acd0 | 1814 | printf("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1815 | num); |
1816 | break; | |
6e592385 | 1817 | } |
2d966958 | 1818 | |
4f63acd0 | 1819 | NetStartAgain(); |
92895de9 | 1820 | return 2; |
6e592385 WD |
1821 | } |
1822 | /* Fall through */ | |
1823 | default: | |
92895de9 | 1824 | return 0; |
2d966958 | 1825 | } |
92895de9 | 1826 | return 0; /* OK */ |
2d966958 WD |
1827 | } |
1828 | /**********************************************************************/ | |
1829 | ||
1830 | int | |
6b147d11 | 1831 | NetCksumOk(uchar *ptr, int len) |
2d966958 WD |
1832 | { |
1833 | return !((NetCksum(ptr, len) + 1) & 0xfffe); | |
1834 | } | |
1835 | ||
1836 | ||
1837 | unsigned | |
6b147d11 | 1838 | NetCksum(uchar *ptr, int len) |
2d966958 WD |
1839 | { |
1840 | ulong xsum; | |
9d2a873b | 1841 | ushort *p = (ushort *)ptr; |
2d966958 WD |
1842 | |
1843 | xsum = 0; | |
1844 | while (len-- > 0) | |
7bc5ee07 | 1845 | xsum += *p++; |
2d966958 WD |
1846 | xsum = (xsum & 0xffff) + (xsum >> 16); |
1847 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
92895de9 | 1848 | return xsum & 0xffff; |
2d966958 WD |
1849 | } |
1850 | ||
a3d991bd WD |
1851 | int |
1852 | NetEthHdrSize(void) | |
1853 | { | |
1854 | ushort myvlanid; | |
2d966958 | 1855 | |
a3d991bd WD |
1856 | myvlanid = ntohs(NetOurVLAN); |
1857 | if (myvlanid == (ushort)-1) | |
1858 | myvlanid = VLAN_NONE; | |
1859 | ||
3e38e429 LC |
1860 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1861 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1862 | } |
1863 | ||
1864 | int | |
6b147d11 | 1865 | NetSetEther(volatile uchar *xet, uchar * addr, uint prot) |
2d966958 WD |
1866 | { |
1867 | Ethernet_t *et = (Ethernet_t *)xet; | |
a3d991bd WD |
1868 | ushort myvlanid; |
1869 | ||
1870 | myvlanid = ntohs(NetOurVLAN); | |
1871 | if (myvlanid == (ushort)-1) | |
1872 | myvlanid = VLAN_NONE; | |
2d966958 | 1873 | |
4f63acd0 LC |
1874 | memcpy(et->et_dest, addr, 6); |
1875 | memcpy(et->et_src, NetOurEther, 6); | |
a3d991bd | 1876 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1877 | et->et_protlen = htons(prot); |
a3d991bd WD |
1878 | return ETHER_HDR_SIZE; |
1879 | } else { | |
1880 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet; | |
2d966958 | 1881 | |
a3d991bd WD |
1882 | vet->vet_vlan_type = htons(PROT_VLAN); |
1883 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1884 | vet->vet_type = htons(prot); | |
1885 | return VLAN_ETHER_HDR_SIZE; | |
1886 | } | |
1887 | } | |
2d966958 WD |
1888 | |
1889 | void | |
6b147d11 | 1890 | NetSetIP(volatile uchar *xip, IPaddr_t dest, int dport, int sport, int len) |
2d966958 | 1891 | { |
af8626e0 | 1892 | IP_t *ip = (IP_t *)xip; |
2d966958 WD |
1893 | |
1894 | /* | |
1895 | * If the data is an odd number of bytes, zero the | |
1896 | * byte after the last byte so that the checksum | |
1897 | * will work. | |
1898 | */ | |
1899 | if (len & 1) | |
1900 | xip[IP_HDR_SIZE + len] = 0; | |
1901 | ||
1902 | /* | |
1903 | * Construct an IP and UDP header. | |
6e592385 | 1904 | * (need to set no fragment bit - XXX) |
2d966958 | 1905 | */ |
3e38e429 LC |
1906 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1907 | ip->ip_hl_v = 0x45; | |
2d966958 WD |
1908 | ip->ip_tos = 0; |
1909 | ip->ip_len = htons(IP_HDR_SIZE + len); | |
1910 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 1911 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 WD |
1912 | ip->ip_ttl = 255; |
1913 | ip->ip_p = 17; /* UDP */ | |
1914 | ip->ip_sum = 0; | |
3e38e429 | 1915 | /* already in network byte order */ |
6b147d11 | 1916 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); |
3e38e429 | 1917 | /* - "" - */ |
6b147d11 | 1918 | NetCopyIP((void *)&ip->ip_dst, &dest); |
2d966958 WD |
1919 | ip->udp_src = htons(sport); |
1920 | ip->udp_dst = htons(dport); | |
1921 | ip->udp_len = htons(8 + len); | |
1922 | ip->udp_xsum = 0; | |
1923 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
1924 | } | |
1925 | ||
4f63acd0 | 1926 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1927 | { |
1928 | if (*src && (*src == '"')) { | |
1929 | ++src; | |
1930 | --size; | |
1931 | } | |
1932 | ||
d3c65b01 | 1933 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1934 | *dst++ = *src++; |
2d966958 WD |
1935 | *dst = '\0'; |
1936 | } | |
1937 | ||
3e38e429 LC |
1938 | #if defined(CONFIG_CMD_NFS) || \ |
1939 | defined(CONFIG_CMD_SNTP) || \ | |
1940 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1941 | /* |
9739946c RG |
1942 | * make port a little random (1024-17407) |
1943 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1944 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1945 | */ |
1946 | unsigned int random_port(void) | |
1947 | { | |
9739946c | 1948 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1949 | } |
1950 | #endif | |
1951 | ||
4f63acd0 | 1952 | void ip_to_string(IPaddr_t x, char *s) |
2d966958 | 1953 | { |
4f63acd0 LC |
1954 | x = ntohl(x); |
1955 | sprintf(s, "%d.%d.%d.%d", | |
1956 | (int) ((x >> 24) & 0xff), | |
1957 | (int) ((x >> 16) & 0xff), | |
1958 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
6e592385 | 1959 | ); |
2d966958 WD |
1960 | } |
1961 | ||
a3d991bd WD |
1962 | void VLAN_to_string(ushort x, char *s) |
1963 | { | |
1964 | x = ntohs(x); | |
1965 | ||
1966 | if (x == (ushort)-1) | |
1967 | x = VLAN_NONE; | |
1968 | ||
1969 | if (x == VLAN_NONE) | |
1970 | strcpy(s, "none"); | |
1971 | else | |
1972 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1973 | } | |
1974 | ||
2e3ef6e4 | 1975 | ushort string_to_VLAN(const char *s) |
a3d991bd WD |
1976 | { |
1977 | ushort id; | |
1978 | ||
1979 | if (s == NULL) | |
b9711de1 | 1980 | return htons(VLAN_NONE); |
a3d991bd WD |
1981 | |
1982 | if (*s < '0' || *s > '9') | |
1983 | id = VLAN_NONE; | |
1984 | else | |
1985 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1986 | ||
b9711de1 | 1987 | return htons(id); |
a3d991bd WD |
1988 | } |
1989 | ||
a3d991bd WD |
1990 | ushort getenv_VLAN(char *var) |
1991 | { | |
92895de9 | 1992 | return string_to_VLAN(getenv(var)); |
a3d991bd | 1993 | } |