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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" | |
85 | #include "rarp.h" | |
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 | |
f575ae1f | 94 | #include "cdp.h" |
1a32bf41 RG |
95 | #if defined(CONFIG_CMD_DNS) |
96 | #include "dns.h" | |
97 | #endif | |
a36b12f9 | 98 | #include "ping.h" |
2d966958 | 99 | |
d87080b7 WD |
100 | DECLARE_GLOBAL_DATA_PTR; |
101 | ||
2d966958 WD |
102 | /** BOOTP EXTENTIONS **/ |
103 | ||
3e38e429 | 104 | /* Our subnet mask (0=unknown) */ |
c586ce6e | 105 | IPaddr_t NetOurSubnetMask; |
3e38e429 | 106 | /* Our gateways IP address */ |
c586ce6e | 107 | IPaddr_t NetOurGatewayIP; |
3e38e429 | 108 | /* Our DNS IP address */ |
c586ce6e | 109 | IPaddr_t NetOurDNSIP; |
1fe80d79 | 110 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 111 | /* Our 2nd DNS IP address */ |
c586ce6e | 112 | IPaddr_t NetOurDNS2IP; |
3e38e429 LC |
113 | #endif |
114 | /* Our NIS domain */ | |
c586ce6e | 115 | char NetOurNISDomain[32] = {0,}; |
3e38e429 | 116 | /* Our hostname */ |
c586ce6e | 117 | char NetOurHostName[32] = {0,}; |
3e38e429 | 118 | /* Our bootpath */ |
c586ce6e | 119 | char NetOurRootPath[64] = {0,}; |
3e38e429 | 120 | /* Our bootfile size in blocks */ |
c586ce6e | 121 | ushort NetBootFileSize; |
2d966958 | 122 | |
53a5c424 DU |
123 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
124 | IPaddr_t Mcast_addr; | |
125 | #endif | |
126 | ||
2d966958 WD |
127 | /** END OF BOOTP EXTENTIONS **/ |
128 | ||
3e38e429 LC |
129 | /* The actual transferred size of the bootfile (in bytes) */ |
130 | ulong NetBootFileXferSize; | |
131 | /* Our ethernet address */ | |
132 | uchar NetOurEther[6]; | |
133 | /* Boot server enet address */ | |
c586ce6e | 134 | uchar NetServerEther[6]; |
3e38e429 LC |
135 | /* Our IP addr (0 = unknown) */ |
136 | IPaddr_t NetOurIP; | |
137 | /* Server IP addr (0 = unknown) */ | |
138 | IPaddr_t NetServerIP; | |
139 | /* Current receive packet */ | |
db288a96 | 140 | uchar *NetRxPacket; |
3e38e429 LC |
141 | /* Current rx packet length */ |
142 | int NetRxPacketLen; | |
143 | /* IP packet ID */ | |
144 | unsigned NetIPID; | |
145 | /* Ethernet bcast address */ | |
c586ce6e LC |
146 | uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
147 | uchar NetEtherNullAddr[6]; | |
f85b6071 | 148 | #ifdef CONFIG_API |
db288a96 | 149 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 150 | #endif |
3e38e429 LC |
151 | /* Network loop state */ |
152 | int NetState; | |
3e38e429 | 153 | /* Tried all network devices */ |
c586ce6e | 154 | int NetRestartWrap; |
3e38e429 | 155 | /* Network loop restarted */ |
c586ce6e | 156 | static int NetRestarted; |
3e38e429 | 157 | /* At least one device configured */ |
c586ce6e | 158 | static int NetDevExists; |
2d966958 | 159 | |
6e592385 | 160 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 LC |
161 | /* default is without VLAN */ |
162 | ushort NetOurVLAN = 0xFFFF; | |
163 | /* ditto */ | |
164 | ushort NetOurNativeVLAN = 0xFFFF; | |
a3d991bd | 165 | |
3e38e429 LC |
166 | /* Boot File name */ |
167 | char BootFile[128]; | |
2d966958 | 168 | |
643d1ab2 | 169 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 LC |
170 | /* NTP server IP address */ |
171 | IPaddr_t NetNtpServerIP; | |
172 | /* offset time from UTC */ | |
c586ce6e | 173 | int NetTimeOffset; |
ea287deb WD |
174 | #endif |
175 | ||
db288a96 | 176 | uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2d966958 | 177 | |
3e38e429 | 178 | /* Receive packet */ |
db288a96 | 179 | uchar *NetRxPackets[PKTBUFSRX]; |
2d966958 | 180 | |
3e38e429 LC |
181 | /* Current RX packet handler */ |
182 | static rxhand_f *packetHandler; | |
39bccd21 | 183 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 184 | static rxhand_icmp_f *packet_icmp_handler; /* Current ICMP rx handler */ |
39bccd21 | 185 | #endif |
3e38e429 LC |
186 | /* Current timeout handler */ |
187 | static thand_f *timeHandler; | |
188 | /* Time base value */ | |
189 | static ulong timeStart; | |
190 | /* Current timeout value */ | |
191 | static ulong timeDelta; | |
192 | /* THE transmit packet */ | |
db288a96 | 193 | uchar *NetTxPacket; |
2d966958 | 194 | |
e4bf0c5c | 195 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 196 | |
67b96e87 RB |
197 | static int NetTryCount; |
198 | ||
73a8b27c WD |
199 | /**********************************************************************/ |
200 | ||
e4a3d57d SG |
201 | /* |
202 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
203 | * the boot file. | |
204 | */ | |
205 | void net_auto_load(void) | |
206 | { | |
207 | const char *s = getenv("autoload"); | |
208 | ||
209 | if (s != NULL) { | |
210 | if (*s == 'n') { | |
211 | /* | |
212 | * Just use BOOTP/RARP to configure system; | |
213 | * Do not use TFTP to load the bootfile. | |
214 | */ | |
215 | NetState = NETLOOP_SUCCESS; | |
216 | return; | |
217 | } | |
218 | #if defined(CONFIG_CMD_NFS) | |
219 | if (strcmp(s, "NFS") == 0) { | |
220 | /* | |
221 | * Use NFS to load the bootfile. | |
222 | */ | |
223 | NfsStart(); | |
224 | return; | |
225 | } | |
226 | #endif | |
227 | } | |
228 | TftpStart(TFTPGET); | |
229 | } | |
230 | ||
e4bf0c5c | 231 | static void NetInitLoop(enum proto_t protocol) |
2f70c49e | 232 | { |
c586ce6e | 233 | static int env_changed_id; |
4f63acd0 | 234 | int env_id = get_env_id(); |
2f70c49e HS |
235 | |
236 | /* update only when the environment has changed */ | |
3c172c4f | 237 | if (env_changed_id != env_id) { |
23a70bf9 | 238 | NetOurIP = getenv_IPaddr("ipaddr"); |
4f63acd0 LC |
239 | NetOurGatewayIP = getenv_IPaddr("gatewayip"); |
240 | NetOurSubnetMask = getenv_IPaddr("netmask"); | |
241 | NetServerIP = getenv_IPaddr("serverip"); | |
2f70c49e | 242 | NetOurNativeVLAN = getenv_VLAN("nvlan"); |
3c172c4f | 243 | NetOurVLAN = getenv_VLAN("vlan"); |
1a32bf41 RG |
244 | #if defined(CONFIG_CMD_DNS) |
245 | NetOurDNSIP = getenv_IPaddr("dnsip"); | |
246 | #endif | |
3c172c4f | 247 | env_changed_id = env_id; |
2f70c49e | 248 | } |
3c172c4f | 249 | |
da95427c | 250 | return; |
2f70c49e HS |
251 | } |
252 | ||
2d966958 WD |
253 | /**********************************************************************/ |
254 | /* | |
255 | * Main network processing loop. | |
256 | */ | |
257 | ||
e4bf0c5c | 258 | int NetLoop(enum proto_t protocol) |
2d966958 | 259 | { |
2d966958 | 260 | bd_t *bd = gd->bd; |
4793ee65 | 261 | int ret = -1; |
2d966958 | 262 | |
2d966958 WD |
263 | NetRestarted = 0; |
264 | NetDevExists = 0; | |
2d966958 | 265 | |
73a8b27c | 266 | NetTxPacket = NULL; |
67b96e87 | 267 | NetTryCount = 1; |
73a8b27c | 268 | |
d280d3f4 JH |
269 | ArpInit(); |
270 | ||
2d966958 WD |
271 | if (!NetTxPacket) { |
272 | int i; | |
2d966958 WD |
273 | /* |
274 | * Setup packet buffers, aligned correctly. | |
275 | */ | |
276 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
277 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
d3c65b01 | 278 | for (i = 0; i < PKTBUFSRX; i++) |
2d966958 | 279 | NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN; |
73a8b27c WD |
280 | } |
281 | ||
573f14fe | 282 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
2d966958 | 283 | eth_halt(); |
a3d991bd | 284 | eth_set_current(); |
b1bf6f2c WD |
285 | if (eth_init(bd) < 0) { |
286 | eth_halt(); | |
92895de9 | 287 | return -1; |
b1bf6f2c | 288 | } |
2d966958 WD |
289 | |
290 | restart: | |
4f63acd0 | 291 | memcpy(NetOurEther, eth_get_dev()->enetaddr, 6); |
2d966958 WD |
292 | |
293 | NetState = NETLOOP_CONTINUE; | |
294 | ||
295 | /* | |
296 | * Start the ball rolling with the given start function. From | |
297 | * here on, this code is a state machine driven by received | |
298 | * packets and timer events. | |
299 | */ | |
2f70c49e | 300 | NetInitLoop(protocol); |
2d966958 | 301 | |
4f63acd0 | 302 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
303 | case 1: |
304 | /* network not configured */ | |
b1bf6f2c | 305 | eth_halt(); |
92895de9 | 306 | return -1; |
2d966958 | 307 | |
2d966958 WD |
308 | case 2: |
309 | /* network device not configured */ | |
310 | break; | |
2d966958 WD |
311 | |
312 | case 0: | |
2d966958 | 313 | NetDevExists = 1; |
e4bf0c5c | 314 | NetBootFileXferSize = 0; |
2d966958 | 315 | switch (protocol) { |
e4bf0c5c | 316 | case TFTPGET: |
1fb7cd49 SG |
317 | #ifdef CONFIG_CMD_TFTPPUT |
318 | case TFTPPUT: | |
319 | #endif | |
2d966958 | 320 | /* always use ARP to get server ethernet address */ |
e4bf0c5c | 321 | TftpStart(protocol); |
2d966958 | 322 | break; |
7a83af07 LC |
323 | #ifdef CONFIG_CMD_TFTPSRV |
324 | case TFTPSRV: | |
325 | TftpStartServer(); | |
326 | break; | |
327 | #endif | |
643d1ab2 | 328 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 329 | case DHCP: |
d407bf52 | 330 | BootpTry = 0; |
09133f85 | 331 | NetOurIP = 0; |
2d966958 WD |
332 | DhcpRequest(); /* Basically same as BOOTP */ |
333 | break; | |
610f2e9c | 334 | #endif |
2d966958 WD |
335 | |
336 | case BOOTP: | |
337 | BootpTry = 0; | |
09133f85 | 338 | NetOurIP = 0; |
4f63acd0 | 339 | BootpRequest(); |
2d966958 WD |
340 | break; |
341 | ||
bf6cb247 | 342 | #if defined(CONFIG_CMD_RARP) |
2d966958 WD |
343 | case RARP: |
344 | RarpTry = 0; | |
09133f85 | 345 | NetOurIP = 0; |
4f63acd0 | 346 | RarpRequest(); |
2d966958 | 347 | break; |
bf6cb247 | 348 | #endif |
643d1ab2 | 349 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 350 | case PING: |
a36b12f9 | 351 | ping_start(); |
73a8b27c | 352 | break; |
cbd8a35c | 353 | #endif |
643d1ab2 | 354 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c WD |
355 | case NFS: |
356 | NfsStart(); | |
357 | break; | |
a3d991bd | 358 | #endif |
643d1ab2 | 359 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
360 | case CDP: |
361 | CDPStart(); | |
362 | break; | |
68ceb29e WD |
363 | #endif |
364 | #ifdef CONFIG_NETCONSOLE | |
365 | case NETCONS: | |
366 | NcStart(); | |
367 | break; | |
ea287deb | 368 | #endif |
643d1ab2 | 369 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
370 | case SNTP: |
371 | SntpStart(); | |
372 | break; | |
1a32bf41 RG |
373 | #endif |
374 | #if defined(CONFIG_CMD_DNS) | |
375 | case DNS: | |
376 | DnsStart(); | |
377 | break; | |
73a8b27c | 378 | #endif |
2d966958 WD |
379 | default: |
380 | break; | |
381 | } | |
382 | ||
2d966958 WD |
383 | break; |
384 | } | |
385 | ||
643d1ab2 | 386 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 LC |
387 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
388 | defined(CONFIG_STATUS_LED) && \ | |
389 | defined(STATUS_LED_RED) | |
fc3e2165 | 390 | /* |
42d1f039 | 391 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 392 | */ |
d3c65b01 | 393 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 394 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 395 | else |
4f63acd0 | 396 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 397 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 398 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
399 | |
400 | /* | |
401 | * Main packet reception loop. Loop receiving packets until | |
59acc296 | 402 | * someone sets `NetState' to a state that terminates. |
2d966958 WD |
403 | */ |
404 | for (;;) { | |
405 | WATCHDOG_RESET(); | |
406 | #ifdef CONFIG_SHOW_ACTIVITY | |
48522bb5 | 407 | show_activity(1); |
2d966958 WD |
408 | #endif |
409 | /* | |
410 | * Check the ethernet for a new packet. The ethernet | |
411 | * receive routine will process it. | |
412 | */ | |
40cb90ee | 413 | eth_rx(); |
2d966958 WD |
414 | |
415 | /* | |
416 | * Abort if ctrl-c was pressed. | |
417 | */ | |
418 | if (ctrlc()) { | |
8bde7f77 | 419 | eth_halt(); |
4f63acd0 | 420 | puts("\nAbort\n"); |
4793ee65 | 421 | goto done; |
2d966958 WD |
422 | } |
423 | ||
73a8b27c | 424 | ArpTimeoutCheck(); |
2d966958 WD |
425 | |
426 | /* | |
427 | * Check for a timeout, and run the timeout handler | |
428 | * if we have one. | |
429 | */ | |
e0ac62d7 | 430 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
431 | thand_f *x; |
432 | ||
643d1ab2 | 433 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
434 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
435 | defined(CONFIG_STATUS_LED) && \ | |
436 | defined(STATUS_LED_RED) | |
fc3e2165 | 437 | /* |
42d1f039 | 438 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 439 | */ |
4f63acd0 | 440 | if (miiphy_link(eth_get_dev()->name, |
3e38e429 | 441 | CONFIG_SYS_FAULT_MII_ADDR)) { |
4f63acd0 | 442 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
fc3e2165 | 443 | } else { |
4f63acd0 | 444 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
fc3e2165 | 445 | } |
4f63acd0 | 446 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 447 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
448 | x = timeHandler; |
449 | timeHandler = (thand_f *)0; | |
450 | (*x)(); | |
451 | } | |
452 | ||
453 | ||
454 | switch (NetState) { | |
455 | ||
456 | case NETLOOP_RESTART: | |
2d966958 | 457 | NetRestarted = 1; |
2d966958 WD |
458 | goto restart; |
459 | ||
460 | case NETLOOP_SUCCESS: | |
461 | if (NetBootFileXferSize > 0) { | |
f34024d4 | 462 | char buf[20]; |
2d966958 WD |
463 | printf("Bytes transferred = %ld (%lx hex)\n", |
464 | NetBootFileXferSize, | |
465 | NetBootFileXferSize); | |
f34024d4 | 466 | sprintf(buf, "%lX", NetBootFileXferSize); |
2d966958 | 467 | setenv("filesize", buf); |
a3d991bd WD |
468 | |
469 | sprintf(buf, "%lX", (unsigned long)load_addr); | |
470 | setenv("fileaddr", buf); | |
2d966958 WD |
471 | } |
472 | eth_halt(); | |
4793ee65 SG |
473 | ret = NetBootFileXferSize; |
474 | goto done; | |
2d966958 WD |
475 | |
476 | case NETLOOP_FAIL: | |
4793ee65 | 477 | goto done; |
2d966958 WD |
478 | } |
479 | } | |
4793ee65 SG |
480 | |
481 | done: | |
39bccd21 | 482 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
483 | /* Clear out the handlers */ |
484 | NetSetHandler(NULL); | |
485 | net_set_icmp_handler(NULL); | |
39bccd21 | 486 | #endif |
4793ee65 | 487 | return ret; |
2d966958 WD |
488 | } |
489 | ||
490 | /**********************************************************************/ | |
491 | ||
492 | static void | |
493 | startAgainTimeout(void) | |
494 | { | |
495 | NetState = NETLOOP_RESTART; | |
496 | } | |
497 | ||
498 | static void | |
03eb129f LC |
499 | startAgainHandler(uchar *pkt, unsigned dest, IPaddr_t sip, |
500 | unsigned src, unsigned len) | |
2d966958 WD |
501 | { |
502 | /* Totally ignore the packet */ | |
503 | } | |
504 | ||
4f63acd0 | 505 | void NetStartAgain(void) |
2d966958 | 506 | { |
6e592385 | 507 | char *nretry; |
67b96e87 RB |
508 | int retry_forever = 0; |
509 | unsigned long retrycnt = 0; | |
510 | ||
511 | nretry = getenv("netretry"); | |
512 | if (nretry) { | |
513 | if (!strcmp(nretry, "yes")) | |
514 | retry_forever = 1; | |
515 | else if (!strcmp(nretry, "no")) | |
516 | retrycnt = 0; | |
517 | else if (!strcmp(nretry, "once")) | |
518 | retrycnt = 1; | |
519 | else | |
520 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
521 | } else | |
522 | retry_forever = 1; | |
523 | ||
524 | if ((!retry_forever) && (NetTryCount >= retrycnt)) { | |
525 | eth_halt(); | |
a3d991bd WD |
526 | NetState = NETLOOP_FAIL; |
527 | return; | |
528 | } | |
67b96e87 RB |
529 | |
530 | NetTryCount++; | |
531 | ||
4f63acd0 | 532 | eth_halt(); |
8b0c5c12 | 533 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
4f63acd0 | 534 | eth_try_another(!NetRestarted); |
8b0c5c12 | 535 | #endif |
4f63acd0 | 536 | eth_init(gd->bd); |
6e592385 | 537 | if (NetRestartWrap) { |
2d966958 | 538 | NetRestartWrap = 0; |
67b96e87 | 539 | if (NetDevExists) { |
4f63acd0 LC |
540 | NetSetTimeout(10000UL, startAgainTimeout); |
541 | NetSetHandler(startAgainHandler); | |
6e592385 | 542 | } else { |
2d966958 WD |
543 | NetState = NETLOOP_FAIL; |
544 | } | |
6e592385 | 545 | } else { |
2d966958 WD |
546 | NetState = NETLOOP_RESTART; |
547 | } | |
2d966958 WD |
548 | } |
549 | ||
550 | /**********************************************************************/ | |
551 | /* | |
552 | * Miscelaneous bits. | |
553 | */ | |
554 | ||
d280d3f4 JH |
555 | rxhand_f * |
556 | NetGetHandler(void) | |
557 | { | |
558 | return packetHandler; | |
559 | } | |
560 | ||
561 | ||
2d966958 | 562 | void |
6b147d11 | 563 | NetSetHandler(rxhand_f *f) |
2d966958 WD |
564 | { |
565 | packetHandler = f; | |
566 | } | |
567 | ||
39bccd21 | 568 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
569 | void net_set_icmp_handler(rxhand_icmp_f *f) |
570 | { | |
571 | packet_icmp_handler = f; | |
572 | } | |
39bccd21 | 573 | #endif |
2d966958 WD |
574 | |
575 | void | |
6b147d11 | 576 | NetSetTimeout(ulong iv, thand_f *f) |
2d966958 WD |
577 | { |
578 | if (iv == 0) { | |
579 | timeHandler = (thand_f *)0; | |
580 | } else { | |
581 | timeHandler = f; | |
e0ac62d7 WD |
582 | timeStart = get_timer(0); |
583 | timeDelta = iv; | |
2d966958 WD |
584 | } |
585 | } | |
586 | ||
587 | ||
588 | void | |
db288a96 | 589 | NetSendPacket(uchar *pkt, int len) |
2d966958 WD |
590 | { |
591 | (void) eth_send(pkt, len); | |
592 | } | |
593 | ||
73a8b27c WD |
594 | int |
595 | NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len) | |
596 | { | |
a3d991bd WD |
597 | uchar *pkt; |
598 | ||
73a8b27c WD |
599 | /* convert to new style broadcast */ |
600 | if (dest == 0) | |
601 | dest = 0xFFFFFFFF; | |
602 | ||
603 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
604 | if (dest == 0xFFFFFFFF) | |
605 | ether = NetBcastAddr; | |
606 | ||
3e38e429 LC |
607 | /* |
608 | * if MAC address was not discovered yet, save the packet and do | |
609 | * an ARP request | |
610 | */ | |
73a8b27c WD |
611 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { |
612 | ||
ea45cb0a | 613 | debug("sending ARP for %08x\n", dest); |
0ebf04c6 | 614 | |
73a8b27c WD |
615 | NetArpWaitPacketIP = dest; |
616 | NetArpWaitPacketMAC = ether; | |
a3d991bd WD |
617 | |
618 | pkt = NetArpWaitTxPacket; | |
4f63acd0 | 619 | pkt += NetSetEther(pkt, NetArpWaitPacketMAC, PROT_IP); |
a3d991bd | 620 | |
4f63acd0 | 621 | NetSetIP(pkt, dest, dport, sport, len); |
3e38e429 LC |
622 | memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + |
623 | (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len); | |
73a8b27c WD |
624 | |
625 | /* size of the waiting packet */ | |
3e38e429 LC |
626 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + |
627 | IP_HDR_SIZE + len; | |
73a8b27c WD |
628 | |
629 | /* and do the ARP request */ | |
630 | NetArpWaitTry = 1; | |
631 | NetArpWaitTimerStart = get_timer(0); | |
632 | ArpRequest(); | |
633 | return 1; /* waiting */ | |
634 | } | |
635 | ||
ea45cb0a | 636 | debug("sending UDP to %08x/%pM\n", dest, ether); |
73a8b27c | 637 | |
a3d991bd | 638 | pkt = (uchar *)NetTxPacket; |
4f63acd0 LC |
639 | pkt += NetSetEther(pkt, ether, PROT_IP); |
640 | NetSetIP(pkt, dest, dport, sport, len); | |
a3d991bd | 641 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len); |
73a8b27c | 642 | |
6e592385 | 643 | return 0; /* transmitted */ |
73a8b27c WD |
644 | } |
645 | ||
5cfaa4e5 AR |
646 | #ifdef CONFIG_IP_DEFRAG |
647 | /* | |
648 | * This function collects fragments in a single packet, according | |
649 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
650 | * a complete packet, in static storage | |
651 | */ | |
652 | #ifndef CONFIG_NET_MAXDEFRAG | |
653 | #define CONFIG_NET_MAXDEFRAG 16384 | |
654 | #endif | |
655 | /* | |
656 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
657 | * so we need to add the NFS overhead, which is more than TFTP. | |
658 | * To use sizeof in the internal unnamed structures, we need a real | |
659 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
660 | * The compiler doesn't complain nor allocates the actual structure | |
661 | */ | |
662 | static struct rpc_t rpc_specimen; | |
663 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
664 | ||
665 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP) | |
666 | ||
667 | /* | |
668 | * this is the packet being assembled, either data or frag control. | |
669 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
670 | */ | |
671 | struct hole { | |
672 | /* first_byte is address of this structure */ | |
673 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
674 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
675 | u16 prev_hole; /* index of prev, 0 == none */ | |
676 | u16 unused; | |
677 | }; | |
678 | ||
679 | static IP_t *__NetDefragment(IP_t *ip, int *lenp) | |
680 | { | |
48522bb5 | 681 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
682 | static u16 first_hole, total_len; |
683 | struct hole *payload, *thisfrag, *h, *newh; | |
684 | IP_t *localip = (IP_t *)pkt_buff; | |
685 | uchar *indata = (uchar *)ip; | |
686 | int offset8, start, len, done = 0; | |
687 | u16 ip_off = ntohs(ip->ip_off); | |
688 | ||
689 | /* payload starts after IP header, this fragment is in there */ | |
690 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE_NO_UDP); | |
691 | offset8 = (ip_off & IP_OFFS); | |
692 | thisfrag = payload + offset8; | |
693 | start = offset8 * 8; | |
694 | len = ntohs(ip->ip_len) - IP_HDR_SIZE_NO_UDP; | |
695 | ||
696 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
697 | return NULL; | |
698 | ||
699 | if (!total_len || localip->ip_id != ip->ip_id) { | |
700 | /* new (or different) packet, reset structs */ | |
701 | total_len = 0xffff; | |
702 | payload[0].last_byte = ~0; | |
703 | payload[0].next_hole = 0; | |
704 | payload[0].prev_hole = 0; | |
705 | first_hole = 0; | |
706 | /* any IP header will work, copy the first we received */ | |
707 | memcpy(localip, ip, IP_HDR_SIZE_NO_UDP); | |
708 | } | |
709 | ||
710 | /* | |
711 | * What follows is the reassembly algorithm. We use the payload | |
712 | * array as a linked list of hole descriptors, as each hole starts | |
713 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
714 | * so it is represented as byte count, not as 8-byte blocks. | |
715 | */ | |
716 | ||
717 | h = payload + first_hole; | |
718 | while (h->last_byte < start) { | |
719 | if (!h->next_hole) { | |
720 | /* no hole that far away */ | |
721 | return NULL; | |
722 | } | |
723 | h = payload + h->next_hole; | |
724 | } | |
725 | ||
e397e59e FS |
726 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
727 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
728 | /* no overlap with holes (dup fragment?) */ |
729 | return NULL; | |
730 | } | |
731 | ||
732 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
733 | /* no more fragmentss: truncate this (last) hole */ | |
734 | total_len = start + len; | |
735 | h->last_byte = start + len; | |
736 | } | |
737 | ||
738 | /* | |
739 | * There is some overlap: fix the hole list. This code doesn't | |
740 | * deal with a fragment that overlaps with two different holes | |
741 | * (thus being a superset of a previously-received fragment). | |
742 | */ | |
743 | ||
4f63acd0 | 744 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
745 | /* complete overlap with hole: remove hole */ |
746 | if (!h->prev_hole && !h->next_hole) { | |
747 | /* last remaining hole */ | |
748 | done = 1; | |
749 | } else if (!h->prev_hole) { | |
750 | /* first hole */ | |
751 | first_hole = h->next_hole; | |
752 | payload[h->next_hole].prev_hole = 0; | |
753 | } else if (!h->next_hole) { | |
754 | /* last hole */ | |
755 | payload[h->prev_hole].next_hole = 0; | |
756 | } else { | |
757 | /* in the middle of the list */ | |
758 | payload[h->next_hole].prev_hole = h->prev_hole; | |
759 | payload[h->prev_hole].next_hole = h->next_hole; | |
760 | } | |
761 | ||
762 | } else if (h->last_byte <= start + len) { | |
763 | /* overlaps with final part of the hole: shorten this hole */ | |
764 | h->last_byte = start; | |
765 | ||
766 | } else if (h >= thisfrag) { | |
767 | /* overlaps with initial part of the hole: move this hole */ | |
768 | newh = thisfrag + (len / 8); | |
769 | *newh = *h; | |
770 | h = newh; | |
771 | if (h->next_hole) | |
772 | payload[h->next_hole].prev_hole = (h - payload); | |
773 | if (h->prev_hole) | |
774 | payload[h->prev_hole].next_hole = (h - payload); | |
775 | else | |
776 | first_hole = (h - payload); | |
777 | ||
778 | } else { | |
779 | /* fragment sits in the middle: split the hole */ | |
780 | newh = thisfrag + (len / 8); | |
781 | *newh = *h; | |
782 | h->last_byte = start; | |
783 | h->next_hole = (newh - payload); | |
784 | newh->prev_hole = (h - payload); | |
785 | if (newh->next_hole) | |
786 | payload[newh->next_hole].prev_hole = (newh - payload); | |
787 | } | |
788 | ||
789 | /* finally copy this fragment and possibly return whole packet */ | |
790 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE_NO_UDP, len); | |
791 | if (!done) | |
792 | return NULL; | |
793 | ||
794 | localip->ip_len = htons(total_len); | |
795 | *lenp = total_len + IP_HDR_SIZE_NO_UDP; | |
796 | return localip; | |
797 | } | |
798 | ||
799 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
800 | { | |
801 | u16 ip_off = ntohs(ip->ip_off); | |
802 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
803 | return ip; /* not a fragment */ | |
804 | return __NetDefragment(ip, lenp); | |
805 | } | |
806 | ||
807 | #else /* !CONFIG_IP_DEFRAG */ | |
808 | ||
809 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
810 | { | |
811 | u16 ip_off = ntohs(ip->ip_off); | |
812 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
813 | return ip; /* not a fragment */ | |
814 | return NULL; | |
815 | } | |
816 | #endif | |
a3d991bd | 817 | |
8f79bb17 SG |
818 | /** |
819 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
820 | * drop others. | |
821 | * | |
822 | * @parma ip IP packet containing the ICMP | |
823 | */ | |
824 | static void receive_icmp(IP_t *ip, int len, IPaddr_t src_ip, Ethernet_t *et) | |
825 | { | |
826 | ICMP_t *icmph = (ICMP_t *)&ip->udp_src; | |
827 | ||
828 | switch (icmph->type) { | |
829 | case ICMP_REDIRECT: | |
830 | if (icmph->code != ICMP_REDIR_HOST) | |
831 | return; | |
832 | printf(" ICMP Host Redirect to %pI4 ", | |
833 | &icmph->un.gateway); | |
834 | break; | |
a36b12f9 | 835 | default: |
8f79bb17 | 836 | #if defined(CONFIG_CMD_PING) |
a36b12f9 | 837 | ping_receive(et, ip, len); |
8f79bb17 | 838 | #endif |
39bccd21 | 839 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
840 | if (packet_icmp_handler) |
841 | packet_icmp_handler(icmph->type, icmph->code, | |
842 | ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src), | |
843 | icmph->un.data, ntohs(ip->udp_len)); | |
39bccd21 | 844 | #endif |
8f79bb17 SG |
845 | break; |
846 | } | |
847 | } | |
848 | ||
2d966958 | 849 | void |
db288a96 | 850 | NetReceive(uchar *inpkt, int len) |
2d966958 WD |
851 | { |
852 | Ethernet_t *et; | |
853 | IP_t *ip; | |
2d966958 | 854 | IPaddr_t tmp; |
03eb129f | 855 | IPaddr_t src_ip; |
2d966958 | 856 | int x; |
643d1ab2 | 857 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
858 | int iscdp; |
859 | #endif | |
860 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
861 | ||
0ebf04c6 | 862 | debug("packet received\n"); |
2d966958 | 863 | |
d9bec9f4 MF |
864 | NetRxPacket = inpkt; |
865 | NetRxPacketLen = len; | |
a3d991bd WD |
866 | et = (Ethernet_t *)inpkt; |
867 | ||
868 | /* too small packet? */ | |
869 | if (len < ETHER_HDR_SIZE) | |
870 | return; | |
871 | ||
f85b6071 RJ |
872 | #ifdef CONFIG_API |
873 | if (push_packet) { | |
874 | (*push_packet)(inpkt, len); | |
875 | return; | |
876 | } | |
877 | #endif | |
878 | ||
643d1ab2 | 879 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 880 | /* keep track if packet is CDP */ |
17351883 | 881 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
882 | #endif |
883 | ||
884 | myvlanid = ntohs(NetOurVLAN); | |
885 | if (myvlanid == (ushort)-1) | |
886 | myvlanid = VLAN_NONE; | |
887 | mynvlanid = ntohs(NetOurNativeVLAN); | |
888 | if (mynvlanid == (ushort)-1) | |
889 | mynvlanid = VLAN_NONE; | |
2d966958 WD |
890 | |
891 | x = ntohs(et->et_protlen); | |
892 | ||
0ebf04c6 | 893 | debug("packet received\n"); |
a3d991bd | 894 | |
2d966958 WD |
895 | if (x < 1514) { |
896 | /* | |
897 | * Got a 802 packet. Check the other protocol field. | |
898 | */ | |
899 | x = ntohs(et->et_prot); | |
a3d991bd WD |
900 | |
901 | ip = (IP_t *)(inpkt + E802_HDR_SIZE); | |
2d966958 | 902 | len -= E802_HDR_SIZE; |
a3d991bd WD |
903 | |
904 | } else if (x != PROT_VLAN) { /* normal packet */ | |
905 | ip = (IP_t *)(inpkt + ETHER_HDR_SIZE); | |
2d966958 | 906 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
907 | |
908 | } else { /* VLAN packet */ | |
909 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et; | |
910 | ||
0ebf04c6 RG |
911 | debug("VLAN packet received\n"); |
912 | ||
a3d991bd WD |
913 | /* too small packet? */ |
914 | if (len < VLAN_ETHER_HDR_SIZE) | |
915 | return; | |
916 | ||
917 | /* if no VLAN active */ | |
918 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
643d1ab2 | 919 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
920 | && iscdp == 0 |
921 | #endif | |
922 | ) | |
923 | return; | |
924 | ||
925 | cti = ntohs(vet->vet_tag); | |
926 | vlanid = cti & VLAN_IDMASK; | |
927 | x = ntohs(vet->vet_type); | |
928 | ||
929 | ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE); | |
930 | len -= VLAN_ETHER_HDR_SIZE; | |
2d966958 WD |
931 | } |
932 | ||
0ebf04c6 | 933 | debug("Receive from protocol 0x%x\n", x); |
2d966958 | 934 | |
643d1ab2 | 935 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
936 | if (iscdp) { |
937 | CDPHandler((uchar *)ip, len); | |
938 | return; | |
939 | } | |
940 | #endif | |
941 | ||
942 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
943 | if (vlanid == VLAN_NONE) | |
944 | vlanid = (mynvlanid & VLAN_IDMASK); | |
945 | /* not matched? */ | |
946 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
947 | return; | |
948 | } | |
949 | ||
2d966958 WD |
950 | switch (x) { |
951 | ||
952 | case PROT_ARP: | |
d280d3f4 | 953 | ArpReceive(et, ip, len); |
289f932c | 954 | break; |
2d966958 | 955 | |
bf6cb247 | 956 | #ifdef CONFIG_CMD_RARP |
2d966958 | 957 | case PROT_RARP: |
8b9c5322 | 958 | rarp_receive(ip, len); |
2d966958 | 959 | break; |
bf6cb247 | 960 | #endif |
2d966958 | 961 | case PROT_IP: |
0ebf04c6 | 962 | debug("Got IP\n"); |
5cfaa4e5 | 963 | /* Before we start poking the header, make sure it is there */ |
2d966958 | 964 | if (len < IP_HDR_SIZE) { |
0ebf04c6 | 965 | debug("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE); |
2d966958 WD |
966 | return; |
967 | } | |
5cfaa4e5 | 968 | /* Check the packet length */ |
2d966958 WD |
969 | if (len < ntohs(ip->ip_len)) { |
970 | printf("len bad %d < %d\n", len, ntohs(ip->ip_len)); | |
971 | return; | |
972 | } | |
973 | len = ntohs(ip->ip_len); | |
0ebf04c6 RG |
974 | debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff); |
975 | ||
5cfaa4e5 | 976 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 977 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 978 | return; |
5cfaa4e5 | 979 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 980 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 981 | return; |
5cfaa4e5 | 982 | /* Check the Checksum of the header */ |
2d966958 | 983 | if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) { |
4f63acd0 | 984 | puts("checksum bad\n"); |
2d966958 WD |
985 | return; |
986 | } | |
5cfaa4e5 | 987 | /* If it is not for us, ignore it */ |
2d966958 WD |
988 | tmp = NetReadIP(&ip->ip_dst); |
989 | if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) { | |
53a5c424 | 990 | #ifdef CONFIG_MCAST_TFTP |
85eb5caf | 991 | if (Mcast_addr != tmp) |
53a5c424 | 992 | #endif |
c819abee | 993 | return; |
2d966958 | 994 | } |
03eb129f LC |
995 | /* Read source IP address for later use */ |
996 | src_ip = NetReadIP(&ip->ip_src); | |
5cfaa4e5 AR |
997 | /* |
998 | * The function returns the unchanged packet if it's not | |
999 | * a fragment, and either the complete packet or NULL if | |
1000 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1001 | */ | |
ccb9ebef LC |
1002 | ip = NetDefragment(ip, &len); |
1003 | if (!ip) | |
5cfaa4e5 | 1004 | return; |
2d966958 WD |
1005 | /* |
1006 | * watch for ICMP host redirects | |
1007 | * | |
8bde7f77 WD |
1008 | * There is no real handler code (yet). We just watch |
1009 | * for ICMP host redirect messages. In case anybody | |
1010 | * sees these messages: please contact me | |
1011 | * (wd@denx.de), or - even better - send me the | |
1012 | * necessary fixes :-) | |
2d966958 | 1013 | * |
8bde7f77 WD |
1014 | * Note: in all cases where I have seen this so far |
1015 | * it was a problem with the router configuration, | |
1016 | * for instance when a router was configured in the | |
1017 | * BOOTP reply, but the TFTP server was on the same | |
1018 | * subnet. So this is probably a warning that your | |
1019 | * configuration might be wrong. But I'm not really | |
1020 | * sure if there aren't any other situations. | |
4793ee65 SG |
1021 | * |
1022 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1023 | * we send a tftp packet to a dead connection, or when | |
1024 | * there is no server at the other end. | |
2d966958 WD |
1025 | */ |
1026 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1027 | receive_icmp(ip, len, src_ip, et); |
1028 | return; | |
2d966958 WD |
1029 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1030 | return; | |
1031 | } | |
1032 | ||
8534bf9a SR |
1033 | #ifdef CONFIG_UDP_CHECKSUM |
1034 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1035 | ulong xsum; |
8534bf9a SR |
1036 | ushort *sumptr; |
1037 | ushort sumlen; | |
1038 | ||
1039 | xsum = ip->ip_p; | |
1040 | xsum += (ntohs(ip->udp_len)); | |
1041 | xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff; | |
1042 | xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff; | |
1043 | xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff; | |
1044 | xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff; | |
1045 | ||
1046 | sumlen = ntohs(ip->udp_len); | |
1047 | sumptr = (ushort *) &(ip->udp_src); | |
1048 | ||
1049 | while (sumlen > 1) { | |
b2f50807 | 1050 | ushort sumdata; |
8534bf9a SR |
1051 | |
1052 | sumdata = *sumptr++; | |
1053 | xsum += ntohs(sumdata); | |
1054 | sumlen -= 2; | |
1055 | } | |
1056 | if (sumlen > 0) { | |
b2f50807 | 1057 | ushort sumdata; |
8534bf9a SR |
1058 | |
1059 | sumdata = *(unsigned char *) sumptr; | |
b2f50807 | 1060 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1061 | xsum += sumdata; |
1062 | } | |
1063 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1064 | xsum = (xsum & 0x0000ffff) + |
1065 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1066 | } |
1067 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 WD |
1068 | printf(" UDP wrong checksum %08lx %08x\n", |
1069 | xsum, ntohs(ip->udp_xsum)); | |
8534bf9a SR |
1070 | return; |
1071 | } | |
1072 | } | |
1073 | #endif | |
1074 | ||
53a5c424 | 1075 | |
68ceb29e | 1076 | #ifdef CONFIG_NETCONSOLE |
4f63acd0 | 1077 | nc_input_packet((uchar *)ip + IP_HDR_SIZE, |
68ceb29e WD |
1078 | ntohs(ip->udp_dst), |
1079 | ntohs(ip->udp_src), | |
1080 | ntohs(ip->udp_len) - 8); | |
1081 | #endif | |
2d966958 WD |
1082 | /* |
1083 | * IP header OK. Pass the packet to the current handler. | |
1084 | */ | |
4f63acd0 | 1085 | (*packetHandler)((uchar *)ip + IP_HDR_SIZE, |
2d966958 | 1086 | ntohs(ip->udp_dst), |
03eb129f | 1087 | src_ip, |
2d966958 WD |
1088 | ntohs(ip->udp_src), |
1089 | ntohs(ip->udp_len) - 8); | |
2d966958 WD |
1090 | break; |
1091 | } | |
1092 | } | |
1093 | ||
1094 | ||
1095 | /**********************************************************************/ | |
1096 | ||
e4bf0c5c | 1097 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1098 | { |
1099 | switch (protocol) { | |
6e592385 | 1100 | /* Fall through */ |
643d1ab2 | 1101 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1102 | case PING: |
6e592385 | 1103 | if (NetPingIP == 0) { |
4f63acd0 | 1104 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1105 | return 1; |
6e592385 WD |
1106 | } |
1107 | goto common; | |
cbd8a35c | 1108 | #endif |
643d1ab2 | 1109 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
1110 | case SNTP: |
1111 | if (NetNtpServerIP == 0) { | |
4f63acd0 | 1112 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1113 | return 1; |
ea287deb WD |
1114 | } |
1115 | goto common; | |
1116 | #endif | |
1a32bf41 RG |
1117 | #if defined(CONFIG_CMD_DNS) |
1118 | case DNS: | |
1119 | if (NetOurDNSIP == 0) { | |
1120 | puts("*** ERROR: DNS server address not given\n"); | |
1121 | return 1; | |
1122 | } | |
1123 | goto common; | |
1124 | #endif | |
643d1ab2 | 1125 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1126 | case NFS: |
73a8b27c | 1127 | #endif |
e4bf0c5c | 1128 | case TFTPGET: |
1fb7cd49 | 1129 | case TFTPPUT: |
6e592385 | 1130 | if (NetServerIP == 0) { |
4f63acd0 | 1131 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1132 | return 1; |
6e592385 | 1133 | } |
4f63acd0 LC |
1134 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1135 | defined(CONFIG_CMD_DNS) | |
1136 | common: | |
73a8b27c | 1137 | #endif |
8b6bbe10 | 1138 | /* Fall through */ |
73a8b27c | 1139 | |
8b6bbe10 | 1140 | case NETCONS: |
7a83af07 | 1141 | case TFTPSRV: |
6e592385 | 1142 | if (NetOurIP == 0) { |
4f63acd0 | 1143 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1144 | return 1; |
6e592385 WD |
1145 | } |
1146 | /* Fall through */ | |
2d966958 | 1147 | |
bf6cb247 | 1148 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1149 | case RARP: |
bf6cb247 | 1150 | #endif |
2d966958 | 1151 | case BOOTP: |
a3d991bd | 1152 | case CDP: |
bf6cb247 | 1153 | case DHCP: |
4f63acd0 | 1154 | if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1155 | int num = eth_get_dev_index(); |
2d966958 | 1156 | |
6e592385 WD |
1157 | switch (num) { |
1158 | case -1: | |
4f63acd0 | 1159 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1160 | return 1; |
6e592385 | 1161 | case 0: |
4f63acd0 | 1162 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1163 | break; |
6e592385 | 1164 | default: |
4f63acd0 | 1165 | printf("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1166 | num); |
1167 | break; | |
6e592385 | 1168 | } |
2d966958 | 1169 | |
4f63acd0 | 1170 | NetStartAgain(); |
92895de9 | 1171 | return 2; |
6e592385 WD |
1172 | } |
1173 | /* Fall through */ | |
1174 | default: | |
92895de9 | 1175 | return 0; |
2d966958 | 1176 | } |
92895de9 | 1177 | return 0; /* OK */ |
2d966958 WD |
1178 | } |
1179 | /**********************************************************************/ | |
1180 | ||
1181 | int | |
6b147d11 | 1182 | NetCksumOk(uchar *ptr, int len) |
2d966958 WD |
1183 | { |
1184 | return !((NetCksum(ptr, len) + 1) & 0xfffe); | |
1185 | } | |
1186 | ||
1187 | ||
1188 | unsigned | |
6b147d11 | 1189 | NetCksum(uchar *ptr, int len) |
2d966958 WD |
1190 | { |
1191 | ulong xsum; | |
9d2a873b | 1192 | ushort *p = (ushort *)ptr; |
2d966958 WD |
1193 | |
1194 | xsum = 0; | |
1195 | while (len-- > 0) | |
7bc5ee07 | 1196 | xsum += *p++; |
2d966958 WD |
1197 | xsum = (xsum & 0xffff) + (xsum >> 16); |
1198 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
92895de9 | 1199 | return xsum & 0xffff; |
2d966958 WD |
1200 | } |
1201 | ||
a3d991bd WD |
1202 | int |
1203 | NetEthHdrSize(void) | |
1204 | { | |
1205 | ushort myvlanid; | |
2d966958 | 1206 | |
a3d991bd WD |
1207 | myvlanid = ntohs(NetOurVLAN); |
1208 | if (myvlanid == (ushort)-1) | |
1209 | myvlanid = VLAN_NONE; | |
1210 | ||
3e38e429 LC |
1211 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1212 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1213 | } |
1214 | ||
1215 | int | |
db288a96 | 1216 | NetSetEther(uchar *xet, uchar * addr, uint prot) |
2d966958 WD |
1217 | { |
1218 | Ethernet_t *et = (Ethernet_t *)xet; | |
a3d991bd WD |
1219 | ushort myvlanid; |
1220 | ||
1221 | myvlanid = ntohs(NetOurVLAN); | |
1222 | if (myvlanid == (ushort)-1) | |
1223 | myvlanid = VLAN_NONE; | |
2d966958 | 1224 | |
4f63acd0 LC |
1225 | memcpy(et->et_dest, addr, 6); |
1226 | memcpy(et->et_src, NetOurEther, 6); | |
a3d991bd | 1227 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1228 | et->et_protlen = htons(prot); |
a3d991bd WD |
1229 | return ETHER_HDR_SIZE; |
1230 | } else { | |
1231 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet; | |
2d966958 | 1232 | |
a3d991bd WD |
1233 | vet->vet_vlan_type = htons(PROT_VLAN); |
1234 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1235 | vet->vet_type = htons(prot); | |
1236 | return VLAN_ETHER_HDR_SIZE; | |
1237 | } | |
1238 | } | |
2d966958 WD |
1239 | |
1240 | void | |
db288a96 | 1241 | NetSetIP(uchar *xip, IPaddr_t dest, int dport, int sport, int len) |
2d966958 | 1242 | { |
af8626e0 | 1243 | IP_t *ip = (IP_t *)xip; |
2d966958 WD |
1244 | |
1245 | /* | |
1246 | * If the data is an odd number of bytes, zero the | |
1247 | * byte after the last byte so that the checksum | |
1248 | * will work. | |
1249 | */ | |
1250 | if (len & 1) | |
1251 | xip[IP_HDR_SIZE + len] = 0; | |
1252 | ||
1253 | /* | |
1254 | * Construct an IP and UDP header. | |
6e592385 | 1255 | * (need to set no fragment bit - XXX) |
2d966958 | 1256 | */ |
3e38e429 LC |
1257 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1258 | ip->ip_hl_v = 0x45; | |
2d966958 WD |
1259 | ip->ip_tos = 0; |
1260 | ip->ip_len = htons(IP_HDR_SIZE + len); | |
1261 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 1262 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 WD |
1263 | ip->ip_ttl = 255; |
1264 | ip->ip_p = 17; /* UDP */ | |
1265 | ip->ip_sum = 0; | |
3e38e429 | 1266 | /* already in network byte order */ |
6b147d11 | 1267 | NetCopyIP((void *)&ip->ip_src, &NetOurIP); |
3e38e429 | 1268 | /* - "" - */ |
6b147d11 | 1269 | NetCopyIP((void *)&ip->ip_dst, &dest); |
2d966958 WD |
1270 | ip->udp_src = htons(sport); |
1271 | ip->udp_dst = htons(dport); | |
1272 | ip->udp_len = htons(8 + len); | |
1273 | ip->udp_xsum = 0; | |
1274 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
1275 | } | |
1276 | ||
4f63acd0 | 1277 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1278 | { |
1279 | if (*src && (*src == '"')) { | |
1280 | ++src; | |
1281 | --size; | |
1282 | } | |
1283 | ||
d3c65b01 | 1284 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1285 | *dst++ = *src++; |
2d966958 WD |
1286 | *dst = '\0'; |
1287 | } | |
1288 | ||
3e38e429 LC |
1289 | #if defined(CONFIG_CMD_NFS) || \ |
1290 | defined(CONFIG_CMD_SNTP) || \ | |
1291 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1292 | /* |
9739946c RG |
1293 | * make port a little random (1024-17407) |
1294 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1295 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1296 | */ |
1297 | unsigned int random_port(void) | |
1298 | { | |
9739946c | 1299 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1300 | } |
1301 | #endif | |
1302 | ||
4f63acd0 | 1303 | void ip_to_string(IPaddr_t x, char *s) |
2d966958 | 1304 | { |
4f63acd0 LC |
1305 | x = ntohl(x); |
1306 | sprintf(s, "%d.%d.%d.%d", | |
1307 | (int) ((x >> 24) & 0xff), | |
1308 | (int) ((x >> 16) & 0xff), | |
1309 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
6e592385 | 1310 | ); |
2d966958 WD |
1311 | } |
1312 | ||
a3d991bd WD |
1313 | void VLAN_to_string(ushort x, char *s) |
1314 | { | |
1315 | x = ntohs(x); | |
1316 | ||
1317 | if (x == (ushort)-1) | |
1318 | x = VLAN_NONE; | |
1319 | ||
1320 | if (x == VLAN_NONE) | |
1321 | strcpy(s, "none"); | |
1322 | else | |
1323 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1324 | } | |
1325 | ||
2e3ef6e4 | 1326 | ushort string_to_VLAN(const char *s) |
a3d991bd WD |
1327 | { |
1328 | ushort id; | |
1329 | ||
1330 | if (s == NULL) | |
b9711de1 | 1331 | return htons(VLAN_NONE); |
a3d991bd WD |
1332 | |
1333 | if (*s < '0' || *s > '9') | |
1334 | id = VLAN_NONE; | |
1335 | else | |
1336 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1337 | ||
b9711de1 | 1338 | return htons(id); |
a3d991bd WD |
1339 | } |
1340 | ||
a3d991bd WD |
1341 | ushort getenv_VLAN(char *var) |
1342 | { | |
92895de9 | 1343 | return string_to_VLAN(getenv(var)); |
a3d991bd | 1344 | } |