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Commit | Line | Data |
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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> | |
48522bb5 | 80 | #include <linux/compiler.h> |
2d966958 | 81 | #include <net.h> |
d280d3f4 | 82 | #include "arp.h" |
2d966958 WD |
83 | #include "bootp.h" |
84 | #include "tftp.h" | |
bf6cb247 | 85 | #ifdef CONFIG_CMD_RARP |
2d966958 | 86 | #include "rarp.h" |
bf6cb247 | 87 | #endif |
cbd8a35c | 88 | #include "nfs.h" |
fc3e2165 WD |
89 | #ifdef CONFIG_STATUS_LED |
90 | #include <status_led.h> | |
91 | #include <miiphy.h> | |
92 | #endif | |
643d1ab2 | 93 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
94 | #include "sntp.h" |
95 | #endif | |
f575ae1f | 96 | #include "cdp.h" |
1a32bf41 RG |
97 | #if defined(CONFIG_CMD_DNS) |
98 | #include "dns.h" | |
99 | #endif | |
2d966958 | 100 | |
d87080b7 WD |
101 | DECLARE_GLOBAL_DATA_PTR; |
102 | ||
2d966958 WD |
103 | /** BOOTP EXTENTIONS **/ |
104 | ||
3e38e429 | 105 | /* Our subnet mask (0=unknown) */ |
c586ce6e | 106 | IPaddr_t NetOurSubnetMask; |
3e38e429 | 107 | /* Our gateways IP address */ |
c586ce6e | 108 | IPaddr_t NetOurGatewayIP; |
3e38e429 | 109 | /* Our DNS IP address */ |
c586ce6e | 110 | IPaddr_t NetOurDNSIP; |
1fe80d79 | 111 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 112 | /* Our 2nd DNS IP address */ |
c586ce6e | 113 | IPaddr_t NetOurDNS2IP; |
3e38e429 LC |
114 | #endif |
115 | /* Our NIS domain */ | |
c586ce6e | 116 | char NetOurNISDomain[32] = {0,}; |
3e38e429 | 117 | /* Our hostname */ |
c586ce6e | 118 | char NetOurHostName[32] = {0,}; |
3e38e429 | 119 | /* Our bootpath */ |
c586ce6e | 120 | char NetOurRootPath[64] = {0,}; |
3e38e429 | 121 | /* Our bootfile size in blocks */ |
c586ce6e | 122 | ushort NetBootFileSize; |
2d966958 | 123 | |
53a5c424 DU |
124 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
125 | IPaddr_t Mcast_addr; | |
126 | #endif | |
127 | ||
2d966958 WD |
128 | /** END OF BOOTP EXTENTIONS **/ |
129 | ||
3e38e429 LC |
130 | /* The actual transferred size of the bootfile (in bytes) */ |
131 | ulong NetBootFileXferSize; | |
132 | /* Our ethernet address */ | |
133 | uchar NetOurEther[6]; | |
134 | /* Boot server enet address */ | |
c586ce6e | 135 | uchar NetServerEther[6]; |
3e38e429 LC |
136 | /* Our IP addr (0 = unknown) */ |
137 | IPaddr_t NetOurIP; | |
138 | /* Server IP addr (0 = unknown) */ | |
139 | IPaddr_t NetServerIP; | |
140 | /* Current receive packet */ | |
db288a96 | 141 | uchar *NetRxPacket; |
3e38e429 LC |
142 | /* Current rx packet length */ |
143 | int NetRxPacketLen; | |
144 | /* IP packet ID */ | |
145 | unsigned NetIPID; | |
146 | /* Ethernet bcast address */ | |
c586ce6e LC |
147 | uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
148 | uchar NetEtherNullAddr[6]; | |
f85b6071 | 149 | #ifdef CONFIG_API |
db288a96 | 150 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 151 | #endif |
3e38e429 LC |
152 | /* Network loop state */ |
153 | int NetState; | |
3e38e429 | 154 | /* Tried all network devices */ |
c586ce6e | 155 | int NetRestartWrap; |
3e38e429 | 156 | /* Network loop restarted */ |
c586ce6e | 157 | static int NetRestarted; |
3e38e429 | 158 | /* At least one device configured */ |
c586ce6e | 159 | static int NetDevExists; |
2d966958 | 160 | |
6e592385 | 161 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 LC |
162 | /* default is without VLAN */ |
163 | ushort NetOurVLAN = 0xFFFF; | |
164 | /* ditto */ | |
165 | ushort NetOurNativeVLAN = 0xFFFF; | |
a3d991bd | 166 | |
3e38e429 LC |
167 | /* Boot File name */ |
168 | char BootFile[128]; | |
2d966958 | 169 | |
643d1ab2 | 170 | #if defined(CONFIG_CMD_PING) |
3e38e429 LC |
171 | /* the ip address to ping */ |
172 | IPaddr_t NetPingIP; | |
73a8b27c WD |
173 | |
174 | static void PingStart(void); | |
175 | #endif | |
176 | ||
643d1ab2 | 177 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 LC |
178 | /* NTP server IP address */ |
179 | IPaddr_t NetNtpServerIP; | |
180 | /* offset time from UTC */ | |
c586ce6e | 181 | int NetTimeOffset; |
ea287deb WD |
182 | #endif |
183 | ||
db288a96 | 184 | uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2d966958 | 185 | |
3e38e429 | 186 | /* Receive packet */ |
db288a96 | 187 | uchar *NetRxPackets[PKTBUFSRX]; |
2d966958 | 188 | |
3e38e429 LC |
189 | /* Current RX packet handler */ |
190 | static rxhand_f *packetHandler; | |
39bccd21 | 191 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 192 | static rxhand_icmp_f *packet_icmp_handler; /* Current ICMP rx handler */ |
39bccd21 | 193 | #endif |
3e38e429 LC |
194 | /* Current timeout handler */ |
195 | static thand_f *timeHandler; | |
196 | /* Time base value */ | |
197 | static ulong timeStart; | |
198 | /* Current timeout value */ | |
199 | static ulong timeDelta; | |
200 | /* THE transmit packet */ | |
db288a96 | 201 | uchar *NetTxPacket; |
2d966958 | 202 | |
e4bf0c5c | 203 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 204 | |
67b96e87 RB |
205 | static int NetTryCount; |
206 | ||
73a8b27c WD |
207 | /**********************************************************************/ |
208 | ||
e4a3d57d SG |
209 | /* |
210 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
211 | * the boot file. | |
212 | */ | |
213 | void net_auto_load(void) | |
214 | { | |
215 | const char *s = getenv("autoload"); | |
216 | ||
217 | if (s != NULL) { | |
218 | if (*s == 'n') { | |
219 | /* | |
220 | * Just use BOOTP/RARP to configure system; | |
221 | * Do not use TFTP to load the bootfile. | |
222 | */ | |
223 | NetState = NETLOOP_SUCCESS; | |
224 | return; | |
225 | } | |
226 | #if defined(CONFIG_CMD_NFS) | |
227 | if (strcmp(s, "NFS") == 0) { | |
228 | /* | |
229 | * Use NFS to load the bootfile. | |
230 | */ | |
231 | NfsStart(); | |
232 | return; | |
233 | } | |
234 | #endif | |
235 | } | |
236 | TftpStart(TFTPGET); | |
237 | } | |
238 | ||
e4bf0c5c | 239 | static void NetInitLoop(enum proto_t protocol) |
2f70c49e | 240 | { |
c586ce6e | 241 | static int env_changed_id; |
4f63acd0 | 242 | int env_id = get_env_id(); |
2f70c49e HS |
243 | |
244 | /* update only when the environment has changed */ | |
3c172c4f | 245 | if (env_changed_id != env_id) { |
23a70bf9 | 246 | NetOurIP = getenv_IPaddr("ipaddr"); |
4f63acd0 LC |
247 | NetOurGatewayIP = getenv_IPaddr("gatewayip"); |
248 | NetOurSubnetMask = getenv_IPaddr("netmask"); | |
249 | NetServerIP = getenv_IPaddr("serverip"); | |
2f70c49e | 250 | NetOurNativeVLAN = getenv_VLAN("nvlan"); |
3c172c4f | 251 | NetOurVLAN = getenv_VLAN("vlan"); |
1a32bf41 RG |
252 | #if defined(CONFIG_CMD_DNS) |
253 | NetOurDNSIP = getenv_IPaddr("dnsip"); | |
254 | #endif | |
3c172c4f | 255 | env_changed_id = env_id; |
2f70c49e | 256 | } |
3c172c4f | 257 | |
da95427c | 258 | return; |
2f70c49e HS |
259 | } |
260 | ||
2d966958 WD |
261 | /**********************************************************************/ |
262 | /* | |
263 | * Main network processing loop. | |
264 | */ | |
265 | ||
e4bf0c5c | 266 | int NetLoop(enum proto_t protocol) |
2d966958 | 267 | { |
2d966958 | 268 | bd_t *bd = gd->bd; |
4793ee65 | 269 | int ret = -1; |
2d966958 | 270 | |
2d966958 WD |
271 | NetRestarted = 0; |
272 | NetDevExists = 0; | |
2d966958 | 273 | |
73a8b27c | 274 | NetTxPacket = NULL; |
67b96e87 | 275 | NetTryCount = 1; |
73a8b27c | 276 | |
d280d3f4 JH |
277 | ArpInit(); |
278 | ||
2d966958 WD |
279 | if (!NetTxPacket) { |
280 | int i; | |
2d966958 WD |
281 | /* |
282 | * Setup packet buffers, aligned correctly. | |
283 | */ | |
284 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
285 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
d3c65b01 | 286 | for (i = 0; i < PKTBUFSRX; i++) |
2d966958 | 287 | NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN; |
73a8b27c WD |
288 | } |
289 | ||
573f14fe | 290 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
2d966958 | 291 | eth_halt(); |
a3d991bd | 292 | eth_set_current(); |
b1bf6f2c WD |
293 | if (eth_init(bd) < 0) { |
294 | eth_halt(); | |
92895de9 | 295 | return -1; |
b1bf6f2c | 296 | } |
2d966958 WD |
297 | |
298 | restart: | |
4f63acd0 | 299 | memcpy(NetOurEther, eth_get_dev()->enetaddr, 6); |
2d966958 WD |
300 | |
301 | NetState = NETLOOP_CONTINUE; | |
302 | ||
303 | /* | |
304 | * Start the ball rolling with the given start function. From | |
305 | * here on, this code is a state machine driven by received | |
306 | * packets and timer events. | |
307 | */ | |
2f70c49e | 308 | NetInitLoop(protocol); |
2d966958 | 309 | |
4f63acd0 | 310 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
311 | case 1: |
312 | /* network not configured */ | |
b1bf6f2c | 313 | eth_halt(); |
92895de9 | 314 | return -1; |
2d966958 | 315 | |
2d966958 WD |
316 | case 2: |
317 | /* network device not configured */ | |
318 | break; | |
2d966958 WD |
319 | |
320 | case 0: | |
2d966958 | 321 | NetDevExists = 1; |
e4bf0c5c | 322 | NetBootFileXferSize = 0; |
2d966958 | 323 | switch (protocol) { |
e4bf0c5c | 324 | case TFTPGET: |
1fb7cd49 SG |
325 | #ifdef CONFIG_CMD_TFTPPUT |
326 | case TFTPPUT: | |
327 | #endif | |
2d966958 | 328 | /* always use ARP to get server ethernet address */ |
e4bf0c5c | 329 | TftpStart(protocol); |
2d966958 | 330 | break; |
7a83af07 LC |
331 | #ifdef CONFIG_CMD_TFTPSRV |
332 | case TFTPSRV: | |
333 | TftpStartServer(); | |
334 | break; | |
335 | #endif | |
643d1ab2 | 336 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 337 | case DHCP: |
d407bf52 | 338 | BootpTry = 0; |
09133f85 | 339 | NetOurIP = 0; |
2d966958 WD |
340 | DhcpRequest(); /* Basically same as BOOTP */ |
341 | break; | |
610f2e9c | 342 | #endif |
2d966958 WD |
343 | |
344 | case BOOTP: | |
345 | BootpTry = 0; | |
09133f85 | 346 | NetOurIP = 0; |
4f63acd0 | 347 | BootpRequest(); |
2d966958 WD |
348 | break; |
349 | ||
bf6cb247 | 350 | #if defined(CONFIG_CMD_RARP) |
2d966958 WD |
351 | case RARP: |
352 | RarpTry = 0; | |
09133f85 | 353 | NetOurIP = 0; |
4f63acd0 | 354 | RarpRequest(); |
2d966958 | 355 | break; |
bf6cb247 | 356 | #endif |
643d1ab2 | 357 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
358 | case PING: |
359 | PingStart(); | |
360 | break; | |
cbd8a35c | 361 | #endif |
643d1ab2 | 362 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c WD |
363 | case NFS: |
364 | NfsStart(); | |
365 | break; | |
a3d991bd | 366 | #endif |
643d1ab2 | 367 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
368 | case CDP: |
369 | CDPStart(); | |
370 | break; | |
68ceb29e WD |
371 | #endif |
372 | #ifdef CONFIG_NETCONSOLE | |
373 | case NETCONS: | |
374 | NcStart(); | |
375 | break; | |
ea287deb | 376 | #endif |
643d1ab2 | 377 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
378 | case SNTP: |
379 | SntpStart(); | |
380 | break; | |
1a32bf41 RG |
381 | #endif |
382 | #if defined(CONFIG_CMD_DNS) | |
383 | case DNS: | |
384 | DnsStart(); | |
385 | break; | |
73a8b27c | 386 | #endif |
2d966958 WD |
387 | default: |
388 | break; | |
389 | } | |
390 | ||
2d966958 WD |
391 | break; |
392 | } | |
393 | ||
643d1ab2 | 394 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 LC |
395 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
396 | defined(CONFIG_STATUS_LED) && \ | |
397 | defined(STATUS_LED_RED) | |
fc3e2165 | 398 | /* |
42d1f039 | 399 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 400 | */ |
d3c65b01 | 401 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 402 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 403 | else |
4f63acd0 | 404 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 405 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 406 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
407 | |
408 | /* | |
409 | * Main packet reception loop. Loop receiving packets until | |
59acc296 | 410 | * someone sets `NetState' to a state that terminates. |
2d966958 WD |
411 | */ |
412 | for (;;) { | |
413 | WATCHDOG_RESET(); | |
414 | #ifdef CONFIG_SHOW_ACTIVITY | |
48522bb5 | 415 | show_activity(1); |
2d966958 WD |
416 | #endif |
417 | /* | |
418 | * Check the ethernet for a new packet. The ethernet | |
419 | * receive routine will process it. | |
420 | */ | |
40cb90ee | 421 | eth_rx(); |
2d966958 WD |
422 | |
423 | /* | |
424 | * Abort if ctrl-c was pressed. | |
425 | */ | |
426 | if (ctrlc()) { | |
8bde7f77 | 427 | eth_halt(); |
4f63acd0 | 428 | puts("\nAbort\n"); |
4793ee65 | 429 | goto done; |
2d966958 WD |
430 | } |
431 | ||
73a8b27c | 432 | ArpTimeoutCheck(); |
2d966958 WD |
433 | |
434 | /* | |
435 | * Check for a timeout, and run the timeout handler | |
436 | * if we have one. | |
437 | */ | |
e0ac62d7 | 438 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
439 | thand_f *x; |
440 | ||
643d1ab2 | 441 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
442 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
443 | defined(CONFIG_STATUS_LED) && \ | |
444 | defined(STATUS_LED_RED) | |
fc3e2165 | 445 | /* |
42d1f039 | 446 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 447 | */ |
4f63acd0 | 448 | if (miiphy_link(eth_get_dev()->name, |
3e38e429 | 449 | CONFIG_SYS_FAULT_MII_ADDR)) { |
4f63acd0 | 450 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
fc3e2165 | 451 | } else { |
4f63acd0 | 452 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
fc3e2165 | 453 | } |
4f63acd0 | 454 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 455 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
456 | x = timeHandler; |
457 | timeHandler = (thand_f *)0; | |
458 | (*x)(); | |
459 | } | |
460 | ||
461 | ||
462 | switch (NetState) { | |
463 | ||
464 | case NETLOOP_RESTART: | |
2d966958 | 465 | NetRestarted = 1; |
2d966958 WD |
466 | goto restart; |
467 | ||
468 | case NETLOOP_SUCCESS: | |
469 | if (NetBootFileXferSize > 0) { | |
f34024d4 | 470 | char buf[20]; |
2d966958 WD |
471 | printf("Bytes transferred = %ld (%lx hex)\n", |
472 | NetBootFileXferSize, | |
473 | NetBootFileXferSize); | |
f34024d4 | 474 | sprintf(buf, "%lX", NetBootFileXferSize); |
2d966958 | 475 | setenv("filesize", buf); |
a3d991bd WD |
476 | |
477 | sprintf(buf, "%lX", (unsigned long)load_addr); | |
478 | setenv("fileaddr", buf); | |
2d966958 WD |
479 | } |
480 | eth_halt(); | |
4793ee65 SG |
481 | ret = NetBootFileXferSize; |
482 | goto done; | |
2d966958 WD |
483 | |
484 | case NETLOOP_FAIL: | |
4793ee65 | 485 | goto done; |
2d966958 WD |
486 | } |
487 | } | |
4793ee65 SG |
488 | |
489 | done: | |
39bccd21 | 490 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
491 | /* Clear out the handlers */ |
492 | NetSetHandler(NULL); | |
493 | net_set_icmp_handler(NULL); | |
39bccd21 | 494 | #endif |
4793ee65 | 495 | return ret; |
2d966958 WD |
496 | } |
497 | ||
498 | /**********************************************************************/ | |
499 | ||
500 | static void | |
501 | startAgainTimeout(void) | |
502 | { | |
503 | NetState = NETLOOP_RESTART; | |
504 | } | |
505 | ||
506 | static void | |
03eb129f LC |
507 | startAgainHandler(uchar *pkt, unsigned dest, IPaddr_t sip, |
508 | unsigned src, unsigned len) | |
2d966958 WD |
509 | { |
510 | /* Totally ignore the packet */ | |
511 | } | |
512 | ||
4f63acd0 | 513 | void NetStartAgain(void) |
2d966958 | 514 | { |
6e592385 | 515 | char *nretry; |
67b96e87 RB |
516 | int retry_forever = 0; |
517 | unsigned long retrycnt = 0; | |
518 | ||
519 | nretry = getenv("netretry"); | |
520 | if (nretry) { | |
521 | if (!strcmp(nretry, "yes")) | |
522 | retry_forever = 1; | |
523 | else if (!strcmp(nretry, "no")) | |
524 | retrycnt = 0; | |
525 | else if (!strcmp(nretry, "once")) | |
526 | retrycnt = 1; | |
527 | else | |
528 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
529 | } else | |
530 | retry_forever = 1; | |
531 | ||
532 | if ((!retry_forever) && (NetTryCount >= retrycnt)) { | |
533 | eth_halt(); | |
a3d991bd WD |
534 | NetState = NETLOOP_FAIL; |
535 | return; | |
536 | } | |
67b96e87 RB |
537 | |
538 | NetTryCount++; | |
539 | ||
4f63acd0 | 540 | eth_halt(); |
8b0c5c12 | 541 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
4f63acd0 | 542 | eth_try_another(!NetRestarted); |
8b0c5c12 | 543 | #endif |
4f63acd0 | 544 | eth_init(gd->bd); |
6e592385 | 545 | if (NetRestartWrap) { |
2d966958 | 546 | NetRestartWrap = 0; |
67b96e87 | 547 | if (NetDevExists) { |
4f63acd0 LC |
548 | NetSetTimeout(10000UL, startAgainTimeout); |
549 | NetSetHandler(startAgainHandler); | |
6e592385 | 550 | } else { |
2d966958 WD |
551 | NetState = NETLOOP_FAIL; |
552 | } | |
6e592385 | 553 | } else { |
2d966958 WD |
554 | NetState = NETLOOP_RESTART; |
555 | } | |
2d966958 WD |
556 | } |
557 | ||
558 | /**********************************************************************/ | |
559 | /* | |
560 | * Miscelaneous bits. | |
561 | */ | |
562 | ||
d280d3f4 JH |
563 | rxhand_f * |
564 | NetGetHandler(void) | |
565 | { | |
566 | return packetHandler; | |
567 | } | |
568 | ||
569 | ||
2d966958 | 570 | void |
6b147d11 | 571 | NetSetHandler(rxhand_f *f) |
2d966958 WD |
572 | { |
573 | packetHandler = f; | |
574 | } | |
575 | ||
39bccd21 | 576 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
577 | void net_set_icmp_handler(rxhand_icmp_f *f) |
578 | { | |
579 | packet_icmp_handler = f; | |
580 | } | |
39bccd21 | 581 | #endif |
2d966958 WD |
582 | |
583 | void | |
6b147d11 | 584 | NetSetTimeout(ulong iv, thand_f *f) |
2d966958 WD |
585 | { |
586 | if (iv == 0) { | |
587 | timeHandler = (thand_f *)0; | |
588 | } else { | |
589 | timeHandler = f; | |
e0ac62d7 WD |
590 | timeStart = get_timer(0); |
591 | timeDelta = iv; | |
2d966958 WD |
592 | } |
593 | } | |
594 | ||
595 | ||
596 | void | |
db288a96 | 597 | NetSendPacket(uchar *pkt, int len) |
2d966958 WD |
598 | { |
599 | (void) eth_send(pkt, len); | |
600 | } | |
601 | ||
73a8b27c WD |
602 | int |
603 | NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len) | |
604 | { | |
a3d991bd WD |
605 | uchar *pkt; |
606 | ||
73a8b27c WD |
607 | /* convert to new style broadcast */ |
608 | if (dest == 0) | |
609 | dest = 0xFFFFFFFF; | |
610 | ||
611 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
612 | if (dest == 0xFFFFFFFF) | |
613 | ether = NetBcastAddr; | |
614 | ||
3e38e429 LC |
615 | /* |
616 | * if MAC address was not discovered yet, save the packet and do | |
617 | * an ARP request | |
618 | */ | |
73a8b27c WD |
619 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { |
620 | ||
ea45cb0a | 621 | debug("sending ARP for %08x\n", dest); |
0ebf04c6 | 622 | |
73a8b27c WD |
623 | NetArpWaitPacketIP = dest; |
624 | NetArpWaitPacketMAC = ether; | |
a3d991bd WD |
625 | |
626 | pkt = NetArpWaitTxPacket; | |
4f63acd0 | 627 | pkt += NetSetEther(pkt, NetArpWaitPacketMAC, PROT_IP); |
a3d991bd | 628 | |
4f63acd0 | 629 | NetSetIP(pkt, dest, dport, sport, len); |
3e38e429 LC |
630 | memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + |
631 | (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len); | |
73a8b27c WD |
632 | |
633 | /* size of the waiting packet */ | |
3e38e429 LC |
634 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + |
635 | IP_HDR_SIZE + len; | |
73a8b27c WD |
636 | |
637 | /* and do the ARP request */ | |
638 | NetArpWaitTry = 1; | |
639 | NetArpWaitTimerStart = get_timer(0); | |
640 | ArpRequest(); | |
641 | return 1; /* waiting */ | |
642 | } | |
643 | ||
ea45cb0a | 644 | debug("sending UDP to %08x/%pM\n", dest, ether); |
73a8b27c | 645 | |
a3d991bd | 646 | pkt = (uchar *)NetTxPacket; |
4f63acd0 LC |
647 | pkt += NetSetEther(pkt, ether, PROT_IP); |
648 | NetSetIP(pkt, dest, dport, sport, len); | |
a3d991bd | 649 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len); |
73a8b27c | 650 | |
6e592385 | 651 | return 0; /* transmitted */ |
73a8b27c WD |
652 | } |
653 | ||
643d1ab2 | 654 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
655 | static ushort PingSeqNo; |
656 | ||
657 | int PingSend(void) | |
658 | { | |
659 | static uchar mac[6]; | |
db288a96 JH |
660 | IP_t *ip; |
661 | ushort *s; | |
a3d991bd | 662 | uchar *pkt; |
73a8b27c WD |
663 | |
664 | /* XXX always send arp request */ | |
665 | ||
666 | memcpy(mac, NetEtherNullAddr, 6); | |
667 | ||
ea45cb0a | 668 | debug("sending ARP for %08x\n", NetPingIP); |
73a8b27c WD |
669 | |
670 | NetArpWaitPacketIP = NetPingIP; | |
671 | NetArpWaitPacketMAC = mac; | |
672 | ||
a3d991bd WD |
673 | pkt = NetArpWaitTxPacket; |
674 | pkt += NetSetEther(pkt, mac, PROT_IP); | |
73a8b27c | 675 | |
db288a96 | 676 | ip = (IP_t *)pkt; |
73a8b27c WD |
677 | |
678 | /* | |
3e38e429 LC |
679 | * Construct an IP and ICMP header. |
680 | * (need to set no fragment bit - XXX) | |
73a8b27c | 681 | */ |
3e38e429 LC |
682 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
683 | ip->ip_hl_v = 0x45; | |
73a8b27c WD |
684 | ip->ip_tos = 0; |
685 | ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8); | |
686 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 687 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
73a8b27c WD |
688 | ip->ip_ttl = 255; |
689 | ip->ip_p = 0x01; /* ICMP */ | |
690 | ip->ip_sum = 0; | |
3e38e429 | 691 | /* already in network byte order */ |
6b147d11 | 692 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); |
3e38e429 | 693 | /* - "" - */ |
6b147d11 | 694 | NetCopyIP((void *)&ip->ip_dst, &NetPingIP); |
73a8b27c WD |
695 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); |
696 | ||
697 | s = &ip->udp_src; /* XXX ICMP starts here */ | |
698 | s[0] = htons(0x0800); /* echo-request, code */ | |
699 | s[1] = 0; /* checksum */ | |
53677ef1 | 700 | s[2] = 0; /* identifier */ |
73a8b27c WD |
701 | s[3] = htons(PingSeqNo++); /* sequence number */ |
702 | s[1] = ~NetCksum((uchar *)s, 8/2); | |
703 | ||
704 | /* size of the waiting packet */ | |
3e38e429 LC |
705 | NetArpWaitTxPacketSize = |
706 | (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8; | |
73a8b27c WD |
707 | |
708 | /* and do the ARP request */ | |
709 | NetArpWaitTry = 1; | |
710 | NetArpWaitTimerStart = get_timer(0); | |
711 | ArpRequest(); | |
712 | return 1; /* waiting */ | |
713 | } | |
714 | ||
715 | static void | |
4f63acd0 | 716 | PingTimeout(void) |
73a8b27c WD |
717 | { |
718 | eth_halt(); | |
719 | NetState = NETLOOP_FAIL; /* we did not get the reply */ | |
720 | } | |
2d966958 | 721 | |
73a8b27c | 722 | static void |
03eb129f LC |
723 | PingHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, |
724 | unsigned len) | |
73a8b27c | 725 | { |
03eb129f | 726 | if (sip != NetPingIP) |
73a8b27c WD |
727 | return; |
728 | ||
729 | NetState = NETLOOP_SUCCESS; | |
730 | } | |
731 | ||
732 | static void PingStart(void) | |
733 | { | |
4f63acd0 | 734 | printf("Using %s device\n", eth_get_name()); |
4f63acd0 LC |
735 | NetSetTimeout(10000UL, PingTimeout); |
736 | NetSetHandler(PingHandler); | |
73a8b27c WD |
737 | |
738 | PingSend(); | |
739 | } | |
610f2e9c | 740 | #endif |
2d966958 | 741 | |
5cfaa4e5 AR |
742 | #ifdef CONFIG_IP_DEFRAG |
743 | /* | |
744 | * This function collects fragments in a single packet, according | |
745 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
746 | * a complete packet, in static storage | |
747 | */ | |
748 | #ifndef CONFIG_NET_MAXDEFRAG | |
749 | #define CONFIG_NET_MAXDEFRAG 16384 | |
750 | #endif | |
751 | /* | |
752 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
753 | * so we need to add the NFS overhead, which is more than TFTP. | |
754 | * To use sizeof in the internal unnamed structures, we need a real | |
755 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
756 | * The compiler doesn't complain nor allocates the actual structure | |
757 | */ | |
758 | static struct rpc_t rpc_specimen; | |
759 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
760 | ||
761 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP) | |
762 | ||
763 | /* | |
764 | * this is the packet being assembled, either data or frag control. | |
765 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
766 | */ | |
767 | struct hole { | |
768 | /* first_byte is address of this structure */ | |
769 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
770 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
771 | u16 prev_hole; /* index of prev, 0 == none */ | |
772 | u16 unused; | |
773 | }; | |
774 | ||
775 | static IP_t *__NetDefragment(IP_t *ip, int *lenp) | |
776 | { | |
48522bb5 | 777 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
778 | static u16 first_hole, total_len; |
779 | struct hole *payload, *thisfrag, *h, *newh; | |
780 | IP_t *localip = (IP_t *)pkt_buff; | |
781 | uchar *indata = (uchar *)ip; | |
782 | int offset8, start, len, done = 0; | |
783 | u16 ip_off = ntohs(ip->ip_off); | |
784 | ||
785 | /* payload starts after IP header, this fragment is in there */ | |
786 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE_NO_UDP); | |
787 | offset8 = (ip_off & IP_OFFS); | |
788 | thisfrag = payload + offset8; | |
789 | start = offset8 * 8; | |
790 | len = ntohs(ip->ip_len) - IP_HDR_SIZE_NO_UDP; | |
791 | ||
792 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
793 | return NULL; | |
794 | ||
795 | if (!total_len || localip->ip_id != ip->ip_id) { | |
796 | /* new (or different) packet, reset structs */ | |
797 | total_len = 0xffff; | |
798 | payload[0].last_byte = ~0; | |
799 | payload[0].next_hole = 0; | |
800 | payload[0].prev_hole = 0; | |
801 | first_hole = 0; | |
802 | /* any IP header will work, copy the first we received */ | |
803 | memcpy(localip, ip, IP_HDR_SIZE_NO_UDP); | |
804 | } | |
805 | ||
806 | /* | |
807 | * What follows is the reassembly algorithm. We use the payload | |
808 | * array as a linked list of hole descriptors, as each hole starts | |
809 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
810 | * so it is represented as byte count, not as 8-byte blocks. | |
811 | */ | |
812 | ||
813 | h = payload + first_hole; | |
814 | while (h->last_byte < start) { | |
815 | if (!h->next_hole) { | |
816 | /* no hole that far away */ | |
817 | return NULL; | |
818 | } | |
819 | h = payload + h->next_hole; | |
820 | } | |
821 | ||
e397e59e FS |
822 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
823 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
824 | /* no overlap with holes (dup fragment?) */ |
825 | return NULL; | |
826 | } | |
827 | ||
828 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
829 | /* no more fragmentss: truncate this (last) hole */ | |
830 | total_len = start + len; | |
831 | h->last_byte = start + len; | |
832 | } | |
833 | ||
834 | /* | |
835 | * There is some overlap: fix the hole list. This code doesn't | |
836 | * deal with a fragment that overlaps with two different holes | |
837 | * (thus being a superset of a previously-received fragment). | |
838 | */ | |
839 | ||
4f63acd0 | 840 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
841 | /* complete overlap with hole: remove hole */ |
842 | if (!h->prev_hole && !h->next_hole) { | |
843 | /* last remaining hole */ | |
844 | done = 1; | |
845 | } else if (!h->prev_hole) { | |
846 | /* first hole */ | |
847 | first_hole = h->next_hole; | |
848 | payload[h->next_hole].prev_hole = 0; | |
849 | } else if (!h->next_hole) { | |
850 | /* last hole */ | |
851 | payload[h->prev_hole].next_hole = 0; | |
852 | } else { | |
853 | /* in the middle of the list */ | |
854 | payload[h->next_hole].prev_hole = h->prev_hole; | |
855 | payload[h->prev_hole].next_hole = h->next_hole; | |
856 | } | |
857 | ||
858 | } else if (h->last_byte <= start + len) { | |
859 | /* overlaps with final part of the hole: shorten this hole */ | |
860 | h->last_byte = start; | |
861 | ||
862 | } else if (h >= thisfrag) { | |
863 | /* overlaps with initial part of the hole: move this hole */ | |
864 | newh = thisfrag + (len / 8); | |
865 | *newh = *h; | |
866 | h = newh; | |
867 | if (h->next_hole) | |
868 | payload[h->next_hole].prev_hole = (h - payload); | |
869 | if (h->prev_hole) | |
870 | payload[h->prev_hole].next_hole = (h - payload); | |
871 | else | |
872 | first_hole = (h - payload); | |
873 | ||
874 | } else { | |
875 | /* fragment sits in the middle: split the hole */ | |
876 | newh = thisfrag + (len / 8); | |
877 | *newh = *h; | |
878 | h->last_byte = start; | |
879 | h->next_hole = (newh - payload); | |
880 | newh->prev_hole = (h - payload); | |
881 | if (newh->next_hole) | |
882 | payload[newh->next_hole].prev_hole = (newh - payload); | |
883 | } | |
884 | ||
885 | /* finally copy this fragment and possibly return whole packet */ | |
886 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE_NO_UDP, len); | |
887 | if (!done) | |
888 | return NULL; | |
889 | ||
890 | localip->ip_len = htons(total_len); | |
891 | *lenp = total_len + IP_HDR_SIZE_NO_UDP; | |
892 | return localip; | |
893 | } | |
894 | ||
895 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
896 | { | |
897 | u16 ip_off = ntohs(ip->ip_off); | |
898 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
899 | return ip; /* not a fragment */ | |
900 | return __NetDefragment(ip, lenp); | |
901 | } | |
902 | ||
903 | #else /* !CONFIG_IP_DEFRAG */ | |
904 | ||
905 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
906 | { | |
907 | u16 ip_off = ntohs(ip->ip_off); | |
908 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
909 | return ip; /* not a fragment */ | |
910 | return NULL; | |
911 | } | |
912 | #endif | |
a3d991bd | 913 | |
8f79bb17 SG |
914 | /** |
915 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
916 | * drop others. | |
917 | * | |
918 | * @parma ip IP packet containing the ICMP | |
919 | */ | |
920 | static void receive_icmp(IP_t *ip, int len, IPaddr_t src_ip, Ethernet_t *et) | |
921 | { | |
922 | ICMP_t *icmph = (ICMP_t *)&ip->udp_src; | |
923 | ||
924 | switch (icmph->type) { | |
925 | case ICMP_REDIRECT: | |
926 | if (icmph->code != ICMP_REDIR_HOST) | |
927 | return; | |
928 | printf(" ICMP Host Redirect to %pI4 ", | |
929 | &icmph->un.gateway); | |
930 | break; | |
931 | #if defined(CONFIG_CMD_PING) | |
932 | case ICMP_ECHO_REPLY: | |
933 | /* | |
934 | * IP header OK. Pass the packet to the | |
935 | * current handler. | |
936 | */ | |
937 | /* | |
938 | * XXX point to ip packet - should this use | |
939 | * packet_icmp_handler? | |
940 | */ | |
941 | (*packetHandler)((uchar *)ip, 0, src_ip, 0, 0); | |
942 | break; | |
943 | case ICMP_ECHO_REQUEST: | |
944 | debug("Got ICMP ECHO REQUEST, return %d bytes\n", | |
945 | ETHER_HDR_SIZE + len); | |
946 | ||
947 | memcpy(&et->et_dest[0], &et->et_src[0], 6); | |
948 | memcpy(&et->et_src[0], NetOurEther, 6); | |
949 | ||
950 | ip->ip_sum = 0; | |
951 | ip->ip_off = 0; | |
952 | NetCopyIP((void *)&ip->ip_dst, &ip->ip_src); | |
953 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); | |
954 | ip->ip_sum = ~NetCksum((uchar *)ip, | |
955 | IP_HDR_SIZE_NO_UDP >> 1); | |
956 | ||
957 | icmph->type = ICMP_ECHO_REPLY; | |
958 | icmph->checksum = 0; | |
959 | icmph->checksum = ~NetCksum((uchar *)icmph, | |
960 | (len - IP_HDR_SIZE_NO_UDP) >> 1); | |
961 | (void) eth_send((uchar *)et, | |
962 | ETHER_HDR_SIZE + len); | |
963 | break; | |
964 | #endif | |
965 | default: | |
39bccd21 | 966 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
967 | if (packet_icmp_handler) |
968 | packet_icmp_handler(icmph->type, icmph->code, | |
969 | ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src), | |
970 | icmph->un.data, ntohs(ip->udp_len)); | |
39bccd21 | 971 | #endif |
8f79bb17 SG |
972 | break; |
973 | } | |
974 | } | |
975 | ||
2d966958 | 976 | void |
db288a96 | 977 | NetReceive(uchar *inpkt, int len) |
2d966958 WD |
978 | { |
979 | Ethernet_t *et; | |
980 | IP_t *ip; | |
d280d3f4 | 981 | #ifdef CONFIG_CMD_RARP |
2d966958 | 982 | ARP_t *arp; |
d280d3f4 | 983 | #endif |
2d966958 | 984 | IPaddr_t tmp; |
03eb129f | 985 | IPaddr_t src_ip; |
2d966958 | 986 | int x; |
643d1ab2 | 987 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
988 | int iscdp; |
989 | #endif | |
990 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
991 | ||
0ebf04c6 | 992 | debug("packet received\n"); |
2d966958 | 993 | |
d9bec9f4 MF |
994 | NetRxPacket = inpkt; |
995 | NetRxPacketLen = len; | |
a3d991bd WD |
996 | et = (Ethernet_t *)inpkt; |
997 | ||
998 | /* too small packet? */ | |
999 | if (len < ETHER_HDR_SIZE) | |
1000 | return; | |
1001 | ||
f85b6071 RJ |
1002 | #ifdef CONFIG_API |
1003 | if (push_packet) { | |
1004 | (*push_packet)(inpkt, len); | |
1005 | return; | |
1006 | } | |
1007 | #endif | |
1008 | ||
643d1ab2 | 1009 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1010 | /* keep track if packet is CDP */ |
17351883 | 1011 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
1012 | #endif |
1013 | ||
1014 | myvlanid = ntohs(NetOurVLAN); | |
1015 | if (myvlanid == (ushort)-1) | |
1016 | myvlanid = VLAN_NONE; | |
1017 | mynvlanid = ntohs(NetOurNativeVLAN); | |
1018 | if (mynvlanid == (ushort)-1) | |
1019 | mynvlanid = VLAN_NONE; | |
2d966958 WD |
1020 | |
1021 | x = ntohs(et->et_protlen); | |
1022 | ||
0ebf04c6 | 1023 | debug("packet received\n"); |
a3d991bd | 1024 | |
2d966958 WD |
1025 | if (x < 1514) { |
1026 | /* | |
1027 | * Got a 802 packet. Check the other protocol field. | |
1028 | */ | |
1029 | x = ntohs(et->et_prot); | |
a3d991bd WD |
1030 | |
1031 | ip = (IP_t *)(inpkt + E802_HDR_SIZE); | |
2d966958 | 1032 | len -= E802_HDR_SIZE; |
a3d991bd WD |
1033 | |
1034 | } else if (x != PROT_VLAN) { /* normal packet */ | |
1035 | ip = (IP_t *)(inpkt + ETHER_HDR_SIZE); | |
2d966958 | 1036 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1037 | |
1038 | } else { /* VLAN packet */ | |
1039 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et; | |
1040 | ||
0ebf04c6 RG |
1041 | debug("VLAN packet received\n"); |
1042 | ||
a3d991bd WD |
1043 | /* too small packet? */ |
1044 | if (len < VLAN_ETHER_HDR_SIZE) | |
1045 | return; | |
1046 | ||
1047 | /* if no VLAN active */ | |
1048 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
643d1ab2 | 1049 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1050 | && iscdp == 0 |
1051 | #endif | |
1052 | ) | |
1053 | return; | |
1054 | ||
1055 | cti = ntohs(vet->vet_tag); | |
1056 | vlanid = cti & VLAN_IDMASK; | |
1057 | x = ntohs(vet->vet_type); | |
1058 | ||
1059 | ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE); | |
1060 | len -= VLAN_ETHER_HDR_SIZE; | |
2d966958 WD |
1061 | } |
1062 | ||
0ebf04c6 | 1063 | debug("Receive from protocol 0x%x\n", x); |
2d966958 | 1064 | |
643d1ab2 | 1065 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1066 | if (iscdp) { |
1067 | CDPHandler((uchar *)ip, len); | |
1068 | return; | |
1069 | } | |
1070 | #endif | |
1071 | ||
1072 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1073 | if (vlanid == VLAN_NONE) | |
1074 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1075 | /* not matched? */ | |
1076 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1077 | return; | |
1078 | } | |
1079 | ||
2d966958 WD |
1080 | switch (x) { |
1081 | ||
1082 | case PROT_ARP: | |
d280d3f4 | 1083 | ArpReceive(et, ip, len); |
289f932c | 1084 | break; |
2d966958 | 1085 | |
bf6cb247 | 1086 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1087 | case PROT_RARP: |
0ebf04c6 | 1088 | debug("Got RARP\n"); |
2d966958 WD |
1089 | arp = (ARP_t *)ip; |
1090 | if (len < ARP_HDR_SIZE) { | |
1091 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1092 | return; | |
1093 | } | |
1094 | ||
1095 | if ((ntohs(arp->ar_op) != RARPOP_REPLY) || | |
1096 | (ntohs(arp->ar_hrd) != ARP_ETHER) || | |
1097 | (ntohs(arp->ar_pro) != PROT_IP) || | |
1098 | (arp->ar_hln != 6) || (arp->ar_pln != 4)) { | |
1099 | ||
4f63acd0 | 1100 | puts("invalid RARP header\n"); |
2d966958 | 1101 | } else { |
4f63acd0 | 1102 | NetCopyIP(&NetOurIP, &arp->ar_data[16]); |
3d3befa7 | 1103 | if (NetServerIP == 0) |
4f63acd0 LC |
1104 | NetCopyIP(&NetServerIP, &arp->ar_data[6]); |
1105 | memcpy(NetServerEther, &arp->ar_data[0], 6); | |
2d966958 | 1106 | |
03eb129f | 1107 | (*packetHandler)(0, 0, 0, 0, 0); |
2d966958 WD |
1108 | } |
1109 | break; | |
bf6cb247 | 1110 | #endif |
2d966958 | 1111 | case PROT_IP: |
0ebf04c6 | 1112 | debug("Got IP\n"); |
5cfaa4e5 | 1113 | /* Before we start poking the header, make sure it is there */ |
2d966958 | 1114 | if (len < IP_HDR_SIZE) { |
0ebf04c6 | 1115 | debug("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE); |
2d966958 WD |
1116 | return; |
1117 | } | |
5cfaa4e5 | 1118 | /* Check the packet length */ |
2d966958 WD |
1119 | if (len < ntohs(ip->ip_len)) { |
1120 | printf("len bad %d < %d\n", len, ntohs(ip->ip_len)); | |
1121 | return; | |
1122 | } | |
1123 | len = ntohs(ip->ip_len); | |
0ebf04c6 RG |
1124 | debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff); |
1125 | ||
5cfaa4e5 | 1126 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1127 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1128 | return; |
5cfaa4e5 | 1129 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 1130 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 1131 | return; |
5cfaa4e5 | 1132 | /* Check the Checksum of the header */ |
2d966958 | 1133 | if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) { |
4f63acd0 | 1134 | puts("checksum bad\n"); |
2d966958 WD |
1135 | return; |
1136 | } | |
5cfaa4e5 | 1137 | /* If it is not for us, ignore it */ |
2d966958 WD |
1138 | tmp = NetReadIP(&ip->ip_dst); |
1139 | if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) { | |
53a5c424 | 1140 | #ifdef CONFIG_MCAST_TFTP |
85eb5caf | 1141 | if (Mcast_addr != tmp) |
53a5c424 | 1142 | #endif |
c819abee | 1143 | return; |
2d966958 | 1144 | } |
03eb129f LC |
1145 | /* Read source IP address for later use */ |
1146 | src_ip = NetReadIP(&ip->ip_src); | |
5cfaa4e5 AR |
1147 | /* |
1148 | * The function returns the unchanged packet if it's not | |
1149 | * a fragment, and either the complete packet or NULL if | |
1150 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1151 | */ | |
ccb9ebef LC |
1152 | ip = NetDefragment(ip, &len); |
1153 | if (!ip) | |
5cfaa4e5 | 1154 | return; |
2d966958 WD |
1155 | /* |
1156 | * watch for ICMP host redirects | |
1157 | * | |
8bde7f77 WD |
1158 | * There is no real handler code (yet). We just watch |
1159 | * for ICMP host redirect messages. In case anybody | |
1160 | * sees these messages: please contact me | |
1161 | * (wd@denx.de), or - even better - send me the | |
1162 | * necessary fixes :-) | |
2d966958 | 1163 | * |
8bde7f77 WD |
1164 | * Note: in all cases where I have seen this so far |
1165 | * it was a problem with the router configuration, | |
1166 | * for instance when a router was configured in the | |
1167 | * BOOTP reply, but the TFTP server was on the same | |
1168 | * subnet. So this is probably a warning that your | |
1169 | * configuration might be wrong. But I'm not really | |
1170 | * sure if there aren't any other situations. | |
4793ee65 SG |
1171 | * |
1172 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1173 | * we send a tftp packet to a dead connection, or when | |
1174 | * there is no server at the other end. | |
2d966958 WD |
1175 | */ |
1176 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1177 | receive_icmp(ip, len, src_ip, et); |
1178 | return; | |
2d966958 WD |
1179 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1180 | return; | |
1181 | } | |
1182 | ||
8534bf9a SR |
1183 | #ifdef CONFIG_UDP_CHECKSUM |
1184 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1185 | ulong xsum; |
8534bf9a SR |
1186 | ushort *sumptr; |
1187 | ushort sumlen; | |
1188 | ||
1189 | xsum = ip->ip_p; | |
1190 | xsum += (ntohs(ip->udp_len)); | |
1191 | xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff; | |
1192 | xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff; | |
1193 | xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff; | |
1194 | xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff; | |
1195 | ||
1196 | sumlen = ntohs(ip->udp_len); | |
1197 | sumptr = (ushort *) &(ip->udp_src); | |
1198 | ||
1199 | while (sumlen > 1) { | |
b2f50807 | 1200 | ushort sumdata; |
8534bf9a SR |
1201 | |
1202 | sumdata = *sumptr++; | |
1203 | xsum += ntohs(sumdata); | |
1204 | sumlen -= 2; | |
1205 | } | |
1206 | if (sumlen > 0) { | |
b2f50807 | 1207 | ushort sumdata; |
8534bf9a SR |
1208 | |
1209 | sumdata = *(unsigned char *) sumptr; | |
b2f50807 | 1210 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1211 | xsum += sumdata; |
1212 | } | |
1213 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1214 | xsum = (xsum & 0x0000ffff) + |
1215 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1216 | } |
1217 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 WD |
1218 | printf(" UDP wrong checksum %08lx %08x\n", |
1219 | xsum, ntohs(ip->udp_xsum)); | |
8534bf9a SR |
1220 | return; |
1221 | } | |
1222 | } | |
1223 | #endif | |
1224 | ||
53a5c424 | 1225 | |
68ceb29e | 1226 | #ifdef CONFIG_NETCONSOLE |
4f63acd0 | 1227 | nc_input_packet((uchar *)ip + IP_HDR_SIZE, |
68ceb29e WD |
1228 | ntohs(ip->udp_dst), |
1229 | ntohs(ip->udp_src), | |
1230 | ntohs(ip->udp_len) - 8); | |
1231 | #endif | |
2d966958 WD |
1232 | /* |
1233 | * IP header OK. Pass the packet to the current handler. | |
1234 | */ | |
4f63acd0 | 1235 | (*packetHandler)((uchar *)ip + IP_HDR_SIZE, |
2d966958 | 1236 | ntohs(ip->udp_dst), |
03eb129f | 1237 | src_ip, |
2d966958 WD |
1238 | ntohs(ip->udp_src), |
1239 | ntohs(ip->udp_len) - 8); | |
2d966958 WD |
1240 | break; |
1241 | } | |
1242 | } | |
1243 | ||
1244 | ||
1245 | /**********************************************************************/ | |
1246 | ||
e4bf0c5c | 1247 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1248 | { |
1249 | switch (protocol) { | |
6e592385 | 1250 | /* Fall through */ |
643d1ab2 | 1251 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1252 | case PING: |
6e592385 | 1253 | if (NetPingIP == 0) { |
4f63acd0 | 1254 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1255 | return 1; |
6e592385 WD |
1256 | } |
1257 | goto common; | |
cbd8a35c | 1258 | #endif |
643d1ab2 | 1259 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
1260 | case SNTP: |
1261 | if (NetNtpServerIP == 0) { | |
4f63acd0 | 1262 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1263 | return 1; |
ea287deb WD |
1264 | } |
1265 | goto common; | |
1266 | #endif | |
1a32bf41 RG |
1267 | #if defined(CONFIG_CMD_DNS) |
1268 | case DNS: | |
1269 | if (NetOurDNSIP == 0) { | |
1270 | puts("*** ERROR: DNS server address not given\n"); | |
1271 | return 1; | |
1272 | } | |
1273 | goto common; | |
1274 | #endif | |
643d1ab2 | 1275 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1276 | case NFS: |
73a8b27c | 1277 | #endif |
e4bf0c5c | 1278 | case TFTPGET: |
1fb7cd49 | 1279 | case TFTPPUT: |
6e592385 | 1280 | if (NetServerIP == 0) { |
4f63acd0 | 1281 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1282 | return 1; |
6e592385 | 1283 | } |
4f63acd0 LC |
1284 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1285 | defined(CONFIG_CMD_DNS) | |
1286 | common: | |
73a8b27c | 1287 | #endif |
8b6bbe10 | 1288 | /* Fall through */ |
73a8b27c | 1289 | |
8b6bbe10 | 1290 | case NETCONS: |
7a83af07 | 1291 | case TFTPSRV: |
6e592385 | 1292 | if (NetOurIP == 0) { |
4f63acd0 | 1293 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1294 | return 1; |
6e592385 WD |
1295 | } |
1296 | /* Fall through */ | |
2d966958 | 1297 | |
bf6cb247 | 1298 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1299 | case RARP: |
bf6cb247 | 1300 | #endif |
2d966958 | 1301 | case BOOTP: |
a3d991bd | 1302 | case CDP: |
bf6cb247 | 1303 | case DHCP: |
4f63acd0 | 1304 | if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1305 | int num = eth_get_dev_index(); |
2d966958 | 1306 | |
6e592385 WD |
1307 | switch (num) { |
1308 | case -1: | |
4f63acd0 | 1309 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1310 | return 1; |
6e592385 | 1311 | case 0: |
4f63acd0 | 1312 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1313 | break; |
6e592385 | 1314 | default: |
4f63acd0 | 1315 | printf("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1316 | num); |
1317 | break; | |
6e592385 | 1318 | } |
2d966958 | 1319 | |
4f63acd0 | 1320 | NetStartAgain(); |
92895de9 | 1321 | return 2; |
6e592385 WD |
1322 | } |
1323 | /* Fall through */ | |
1324 | default: | |
92895de9 | 1325 | return 0; |
2d966958 | 1326 | } |
92895de9 | 1327 | return 0; /* OK */ |
2d966958 WD |
1328 | } |
1329 | /**********************************************************************/ | |
1330 | ||
1331 | int | |
6b147d11 | 1332 | NetCksumOk(uchar *ptr, int len) |
2d966958 WD |
1333 | { |
1334 | return !((NetCksum(ptr, len) + 1) & 0xfffe); | |
1335 | } | |
1336 | ||
1337 | ||
1338 | unsigned | |
6b147d11 | 1339 | NetCksum(uchar *ptr, int len) |
2d966958 WD |
1340 | { |
1341 | ulong xsum; | |
9d2a873b | 1342 | ushort *p = (ushort *)ptr; |
2d966958 WD |
1343 | |
1344 | xsum = 0; | |
1345 | while (len-- > 0) | |
7bc5ee07 | 1346 | xsum += *p++; |
2d966958 WD |
1347 | xsum = (xsum & 0xffff) + (xsum >> 16); |
1348 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
92895de9 | 1349 | return xsum & 0xffff; |
2d966958 WD |
1350 | } |
1351 | ||
a3d991bd WD |
1352 | int |
1353 | NetEthHdrSize(void) | |
1354 | { | |
1355 | ushort myvlanid; | |
2d966958 | 1356 | |
a3d991bd WD |
1357 | myvlanid = ntohs(NetOurVLAN); |
1358 | if (myvlanid == (ushort)-1) | |
1359 | myvlanid = VLAN_NONE; | |
1360 | ||
3e38e429 LC |
1361 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1362 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1363 | } |
1364 | ||
1365 | int | |
db288a96 | 1366 | NetSetEther(uchar *xet, uchar * addr, uint prot) |
2d966958 WD |
1367 | { |
1368 | Ethernet_t *et = (Ethernet_t *)xet; | |
a3d991bd WD |
1369 | ushort myvlanid; |
1370 | ||
1371 | myvlanid = ntohs(NetOurVLAN); | |
1372 | if (myvlanid == (ushort)-1) | |
1373 | myvlanid = VLAN_NONE; | |
2d966958 | 1374 | |
4f63acd0 LC |
1375 | memcpy(et->et_dest, addr, 6); |
1376 | memcpy(et->et_src, NetOurEther, 6); | |
a3d991bd | 1377 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1378 | et->et_protlen = htons(prot); |
a3d991bd WD |
1379 | return ETHER_HDR_SIZE; |
1380 | } else { | |
1381 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet; | |
2d966958 | 1382 | |
a3d991bd WD |
1383 | vet->vet_vlan_type = htons(PROT_VLAN); |
1384 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1385 | vet->vet_type = htons(prot); | |
1386 | return VLAN_ETHER_HDR_SIZE; | |
1387 | } | |
1388 | } | |
2d966958 WD |
1389 | |
1390 | void | |
db288a96 | 1391 | NetSetIP(uchar *xip, IPaddr_t dest, int dport, int sport, int len) |
2d966958 | 1392 | { |
af8626e0 | 1393 | IP_t *ip = (IP_t *)xip; |
2d966958 WD |
1394 | |
1395 | /* | |
1396 | * If the data is an odd number of bytes, zero the | |
1397 | * byte after the last byte so that the checksum | |
1398 | * will work. | |
1399 | */ | |
1400 | if (len & 1) | |
1401 | xip[IP_HDR_SIZE + len] = 0; | |
1402 | ||
1403 | /* | |
1404 | * Construct an IP and UDP header. | |
6e592385 | 1405 | * (need to set no fragment bit - XXX) |
2d966958 | 1406 | */ |
3e38e429 LC |
1407 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1408 | ip->ip_hl_v = 0x45; | |
2d966958 WD |
1409 | ip->ip_tos = 0; |
1410 | ip->ip_len = htons(IP_HDR_SIZE + len); | |
1411 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 1412 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 WD |
1413 | ip->ip_ttl = 255; |
1414 | ip->ip_p = 17; /* UDP */ | |
1415 | ip->ip_sum = 0; | |
3e38e429 | 1416 | /* already in network byte order */ |
6b147d11 | 1417 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); |
3e38e429 | 1418 | /* - "" - */ |
6b147d11 | 1419 | NetCopyIP((void *)&ip->ip_dst, &dest); |
2d966958 WD |
1420 | ip->udp_src = htons(sport); |
1421 | ip->udp_dst = htons(dport); | |
1422 | ip->udp_len = htons(8 + len); | |
1423 | ip->udp_xsum = 0; | |
1424 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
1425 | } | |
1426 | ||
4f63acd0 | 1427 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1428 | { |
1429 | if (*src && (*src == '"')) { | |
1430 | ++src; | |
1431 | --size; | |
1432 | } | |
1433 | ||
d3c65b01 | 1434 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1435 | *dst++ = *src++; |
2d966958 WD |
1436 | *dst = '\0'; |
1437 | } | |
1438 | ||
3e38e429 LC |
1439 | #if defined(CONFIG_CMD_NFS) || \ |
1440 | defined(CONFIG_CMD_SNTP) || \ | |
1441 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1442 | /* |
9739946c RG |
1443 | * make port a little random (1024-17407) |
1444 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1445 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1446 | */ |
1447 | unsigned int random_port(void) | |
1448 | { | |
9739946c | 1449 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1450 | } |
1451 | #endif | |
1452 | ||
4f63acd0 | 1453 | void ip_to_string(IPaddr_t x, char *s) |
2d966958 | 1454 | { |
4f63acd0 LC |
1455 | x = ntohl(x); |
1456 | sprintf(s, "%d.%d.%d.%d", | |
1457 | (int) ((x >> 24) & 0xff), | |
1458 | (int) ((x >> 16) & 0xff), | |
1459 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
6e592385 | 1460 | ); |
2d966958 WD |
1461 | } |
1462 | ||
a3d991bd WD |
1463 | void VLAN_to_string(ushort x, char *s) |
1464 | { | |
1465 | x = ntohs(x); | |
1466 | ||
1467 | if (x == (ushort)-1) | |
1468 | x = VLAN_NONE; | |
1469 | ||
1470 | if (x == VLAN_NONE) | |
1471 | strcpy(s, "none"); | |
1472 | else | |
1473 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1474 | } | |
1475 | ||
2e3ef6e4 | 1476 | ushort string_to_VLAN(const char *s) |
a3d991bd WD |
1477 | { |
1478 | ushort id; | |
1479 | ||
1480 | if (s == NULL) | |
b9711de1 | 1481 | return htons(VLAN_NONE); |
a3d991bd WD |
1482 | |
1483 | if (*s < '0' || *s > '9') | |
1484 | id = VLAN_NONE; | |
1485 | else | |
1486 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1487 | ||
b9711de1 | 1488 | return htons(id); |
a3d991bd WD |
1489 | } |
1490 | ||
a3d991bd WD |
1491 | ushort getenv_VLAN(char *var) |
1492 | { | |
92895de9 | 1493 | return string_to_VLAN(getenv(var)); |
a3d991bd | 1494 | } |