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2d966958 WD |
1 | /* |
2 | * Copied from Linux Monitor (LiMon) - Networking. | |
3 | * | |
4 | * Copyright 1994 - 2000 Neil Russell. | |
5 | * (See License) | |
6 | * Copyright 2000 Roland Borde | |
7 | * Copyright 2000 Paolo Scaffardi | |
8 | * Copyright 2000-2002 Wolfgang Denk, wd@denx.de | |
9 | */ | |
10 | ||
11 | /* | |
12 | * General Desription: | |
13 | * | |
14 | * The user interface supports commands for BOOTP, RARP, and TFTP. | |
15 | * Also, we support ARP internally. Depending on available data, | |
16 | * these interact as follows: | |
17 | * | |
18 | * BOOTP: | |
19 | * | |
20 | * Prerequisites: - own ethernet address | |
21 | * We want: - own IP address | |
22 | * - TFTP server IP address | |
23 | * - name of bootfile | |
24 | * Next step: ARP | |
25 | * | |
26 | * RARP: | |
27 | * | |
28 | * Prerequisites: - own ethernet address | |
29 | * We want: - own IP address | |
30 | * - TFTP server IP address | |
31 | * Next step: ARP | |
32 | * | |
33 | * ARP: | |
34 | * | |
35 | * Prerequisites: - own ethernet address | |
36 | * - own IP address | |
37 | * - TFTP server IP address | |
38 | * We want: - TFTP server ethernet address | |
39 | * Next step: TFTP | |
40 | * | |
41 | * DHCP: | |
42 | * | |
b2f50807 WD |
43 | * Prerequisites: - own ethernet address |
44 | * We want: - IP, Netmask, ServerIP, Gateway IP | |
45 | * - bootfilename, lease time | |
46 | * Next step: - TFTP | |
2d966958 WD |
47 | * |
48 | * TFTP: | |
49 | * | |
50 | * Prerequisites: - own ethernet address | |
51 | * - own IP address | |
52 | * - TFTP server IP address | |
53 | * - TFTP server ethernet address | |
54 | * - name of bootfile (if unknown, we use a default name | |
55 | * derived from our own IP address) | |
56 | * We want: - load the boot file | |
57 | * Next step: none | |
cbd8a35c WD |
58 | * |
59 | * NFS: | |
60 | * | |
61 | * Prerequisites: - own ethernet address | |
62 | * - own IP address | |
63 | * - name of bootfile (if unknown, we use a default name | |
64 | * derived from our own IP address) | |
65 | * We want: - load the boot file | |
66 | * Next step: none | |
ea287deb WD |
67 | * |
68 | * SNTP: | |
69 | * | |
b2f50807 | 70 | * Prerequisites: - own ethernet address |
ea287deb WD |
71 | * - own IP address |
72 | * We want: - network time | |
73 | * Next step: none | |
2d966958 WD |
74 | */ |
75 | ||
76 | ||
77 | #include <common.h> | |
78 | #include <watchdog.h> | |
79 | #include <command.h> | |
80 | #include <net.h> | |
81 | #include "bootp.h" | |
82 | #include "tftp.h" | |
83 | #include "rarp.h" | |
cbd8a35c | 84 | #include "nfs.h" |
fc3e2165 WD |
85 | #ifdef CONFIG_STATUS_LED |
86 | #include <status_led.h> | |
87 | #include <miiphy.h> | |
88 | #endif | |
643d1ab2 | 89 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
90 | #include "sntp.h" |
91 | #endif | |
561858ee PT |
92 | #if defined(CONFIG_CDP_VERSION) |
93 | #include <timestamp.h> | |
94 | #endif | |
1a32bf41 RG |
95 | #if defined(CONFIG_CMD_DNS) |
96 | #include "dns.h" | |
97 | #endif | |
2d966958 | 98 | |
d87080b7 WD |
99 | DECLARE_GLOBAL_DATA_PTR; |
100 | ||
40cb90ee | 101 | #ifndef CONFIG_ARP_TIMEOUT |
49f3bdbb | 102 | # define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */ |
40cb90ee | 103 | #else |
49f3bdbb | 104 | # define ARP_TIMEOUT CONFIG_ARP_TIMEOUT |
40cb90ee GL |
105 | #endif |
106 | ||
107 | ||
73a8b27c | 108 | #ifndef CONFIG_NET_RETRY_COUNT |
40cb90ee | 109 | # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
73a8b27c | 110 | #else |
40cb90ee | 111 | # define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT |
73a8b27c WD |
112 | #endif |
113 | ||
2d966958 WD |
114 | /** BOOTP EXTENTIONS **/ |
115 | ||
116 | IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */ | |
117 | IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */ | |
118 | IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */ | |
1fe80d79 | 119 | #if defined(CONFIG_BOOTP_DNS2) |
fe389a82 SR |
120 | IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */ |
121 | #endif | |
2d966958 WD |
122 | char NetOurNISDomain[32]={0,}; /* Our NIS domain */ |
123 | char NetOurHostName[32]={0,}; /* Our hostname */ | |
124 | char NetOurRootPath[64]={0,}; /* Our bootpath */ | |
125 | ushort NetBootFileSize=0; /* Our bootfile size in blocks */ | |
126 | ||
53a5c424 DU |
127 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
128 | IPaddr_t Mcast_addr; | |
129 | #endif | |
130 | ||
2d966958 WD |
131 | /** END OF BOOTP EXTENTIONS **/ |
132 | ||
133 | ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */ | |
134 | uchar NetOurEther[6]; /* Our ethernet address */ | |
135 | uchar NetServerEther[6] = /* Boot server enet address */ | |
73a8b27c | 136 | { 0, 0, 0, 0, 0, 0 }; |
2d966958 | 137 | IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */ |
40cb90ee | 138 | IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */ |
d9bec9f4 MF |
139 | volatile uchar *NetRxPacket; /* Current receive packet */ |
140 | int NetRxPacketLen; /* Current rx packet length */ | |
2d966958 WD |
141 | unsigned NetIPID; /* IP packet ID */ |
142 | uchar NetBcastAddr[6] = /* Ethernet bcast address */ | |
143 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
73a8b27c WD |
144 | uchar NetEtherNullAddr[6] = |
145 | { 0, 0, 0, 0, 0, 0 }; | |
f85b6071 RJ |
146 | #ifdef CONFIG_API |
147 | void (*push_packet)(volatile void *, int len) = 0; | |
148 | #endif | |
643d1ab2 | 149 | #if defined(CONFIG_CMD_CDP) |
6e592385 | 150 | uchar NetCDPAddr[6] = /* Ethernet bcast address */ |
a3d991bd WD |
151 | { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc }; |
152 | #endif | |
2d966958 WD |
153 | int NetState; /* Network loop state */ |
154 | #ifdef CONFIG_NET_MULTI | |
155 | int NetRestartWrap = 0; /* Tried all network devices */ | |
156 | static int NetRestarted = 0; /* Network loop restarted */ | |
157 | static int NetDevExists = 0; /* At least one device configured */ | |
158 | #endif | |
159 | ||
6e592385 WD |
160 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
161 | ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */ | |
162 | ushort NetOurNativeVLAN = 0xFFFF; /* ditto */ | |
a3d991bd | 163 | |
2d966958 WD |
164 | char BootFile[128]; /* Boot File name */ |
165 | ||
643d1ab2 | 166 | #if defined(CONFIG_CMD_PING) |
53677ef1 | 167 | IPaddr_t NetPingIP; /* the ip address to ping */ |
73a8b27c WD |
168 | |
169 | static void PingStart(void); | |
170 | #endif | |
171 | ||
643d1ab2 | 172 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
173 | static void CDPStart(void); |
174 | #endif | |
175 | ||
643d1ab2 | 176 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
177 | IPaddr_t NetNtpServerIP; /* NTP server IP address */ |
178 | int NetTimeOffset=0; /* offset time from UTC */ | |
179 | #endif | |
180 | ||
68ceb29e WD |
181 | #ifdef CONFIG_NETCONSOLE |
182 | void NcStart(void); | |
183 | int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len); | |
184 | #endif | |
185 | ||
2d966958 WD |
186 | volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
187 | ||
188 | volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */ | |
189 | ||
190 | static rxhand_f *packetHandler; /* Current RX packet handler */ | |
191 | static thand_f *timeHandler; /* Current timeout handler */ | |
e0ac62d7 WD |
192 | static ulong timeStart; /* Time base value */ |
193 | static ulong timeDelta; /* Current timeout value */ | |
2d966958 WD |
194 | volatile uchar *NetTxPacket = 0; /* THE transmit packet */ |
195 | ||
196 | static int net_check_prereq (proto_t protocol); | |
197 | ||
67b96e87 RB |
198 | static int NetTryCount; |
199 | ||
73a8b27c WD |
200 | /**********************************************************************/ |
201 | ||
202 | IPaddr_t NetArpWaitPacketIP; | |
203 | IPaddr_t NetArpWaitReplyIP; | |
204 | uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */ | |
b2f50807 | 205 | uchar *NetArpWaitTxPacket; /* THE transmit packet */ |
73a8b27c | 206 | int NetArpWaitTxPacketSize; |
53677ef1 | 207 | uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN]; |
73a8b27c WD |
208 | ulong NetArpWaitTimerStart; |
209 | int NetArpWaitTry; | |
210 | ||
6e592385 | 211 | void ArpRequest (void) |
73a8b27c WD |
212 | { |
213 | int i; | |
214 | volatile uchar *pkt; | |
6e592385 | 215 | ARP_t *arp; |
73a8b27c | 216 | |
0ebf04c6 RG |
217 | debug("ARP broadcast %d\n", NetArpWaitTry); |
218 | ||
73a8b27c WD |
219 | pkt = NetTxPacket; |
220 | ||
6e592385 | 221 | pkt += NetSetEther (pkt, NetBcastAddr, PROT_ARP); |
73a8b27c | 222 | |
6e592385 | 223 | arp = (ARP_t *) pkt; |
73a8b27c | 224 | |
6e592385 WD |
225 | arp->ar_hrd = htons (ARP_ETHER); |
226 | arp->ar_pro = htons (PROT_IP); | |
73a8b27c WD |
227 | arp->ar_hln = 6; |
228 | arp->ar_pln = 4; | |
6e592385 | 229 | arp->ar_op = htons (ARPOP_REQUEST); |
73a8b27c | 230 | |
b2f50807 WD |
231 | memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */ |
232 | NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */ | |
6e592385 WD |
233 | for (i = 10; i < 16; ++i) { |
234 | arp->ar_data[i] = 0; /* dest ET addr = 0 */ | |
73a8b27c WD |
235 | } |
236 | ||
6e592385 WD |
237 | if ((NetArpWaitPacketIP & NetOurSubnetMask) != |
238 | (NetOurIP & NetOurSubnetMask)) { | |
239 | if (NetOurGatewayIP == 0) { | |
240 | puts ("## Warning: gatewayip needed but not set\n"); | |
d509b812 WD |
241 | NetArpWaitReplyIP = NetArpWaitPacketIP; |
242 | } else { | |
243 | NetArpWaitReplyIP = NetOurGatewayIP; | |
6e592385 | 244 | } |
6e592385 WD |
245 | } else { |
246 | NetArpWaitReplyIP = NetArpWaitPacketIP; | |
247 | } | |
73a8b27c | 248 | |
6e592385 WD |
249 | NetWriteIP ((uchar *) & arp->ar_data[16], NetArpWaitReplyIP); |
250 | (void) eth_send (NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE); | |
73a8b27c WD |
251 | } |
252 | ||
253 | void ArpTimeoutCheck(void) | |
254 | { | |
255 | ulong t; | |
256 | ||
257 | if (!NetArpWaitPacketIP) | |
258 | return; | |
259 | ||
260 | t = get_timer(0); | |
261 | ||
262 | /* check for arp timeout */ | |
49f3bdbb | 263 | if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) { |
73a8b27c WD |
264 | NetArpWaitTry++; |
265 | ||
266 | if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) { | |
267 | puts ("\nARP Retry count exceeded; starting again\n"); | |
268 | NetArpWaitTry = 0; | |
269 | NetStartAgain(); | |
270 | } else { | |
271 | NetArpWaitTimerStart = t; | |
272 | ArpRequest(); | |
273 | } | |
274 | } | |
275 | } | |
276 | ||
da95427c | 277 | static void |
2f70c49e HS |
278 | NetInitLoop(proto_t protocol) |
279 | { | |
da95427c | 280 | static int env_changed_id = 0; |
2f70c49e HS |
281 | bd_t *bd = gd->bd; |
282 | int env_id = get_env_id (); | |
283 | ||
284 | /* update only when the environment has changed */ | |
3c172c4f | 285 | if (env_changed_id != env_id) { |
2f70c49e HS |
286 | NetCopyIP(&NetOurIP, &bd->bi_ip_addr); |
287 | NetOurGatewayIP = getenv_IPaddr ("gatewayip"); | |
288 | NetOurSubnetMask= getenv_IPaddr ("netmask"); | |
2f70c49e | 289 | NetServerIP = getenv_IPaddr ("serverip"); |
2f70c49e | 290 | NetOurNativeVLAN = getenv_VLAN("nvlan"); |
3c172c4f | 291 | NetOurVLAN = getenv_VLAN("vlan"); |
1a32bf41 RG |
292 | #if defined(CONFIG_CMD_DNS) |
293 | NetOurDNSIP = getenv_IPaddr("dnsip"); | |
294 | #endif | |
3c172c4f | 295 | env_changed_id = env_id; |
2f70c49e | 296 | } |
3c172c4f | 297 | |
da95427c | 298 | return; |
2f70c49e HS |
299 | } |
300 | ||
2d966958 WD |
301 | /**********************************************************************/ |
302 | /* | |
303 | * Main network processing loop. | |
304 | */ | |
305 | ||
306 | int | |
307 | NetLoop(proto_t protocol) | |
308 | { | |
2d966958 WD |
309 | bd_t *bd = gd->bd; |
310 | ||
311 | #ifdef CONFIG_NET_MULTI | |
312 | NetRestarted = 0; | |
313 | NetDevExists = 0; | |
314 | #endif | |
315 | ||
73a8b27c WD |
316 | /* XXX problem with bss workaround */ |
317 | NetArpWaitPacketMAC = NULL; | |
318 | NetArpWaitTxPacket = NULL; | |
319 | NetArpWaitPacketIP = 0; | |
320 | NetArpWaitReplyIP = 0; | |
321 | NetArpWaitTxPacket = NULL; | |
322 | NetTxPacket = NULL; | |
67b96e87 | 323 | NetTryCount = 1; |
73a8b27c | 324 | |
2d966958 WD |
325 | if (!NetTxPacket) { |
326 | int i; | |
2d966958 WD |
327 | /* |
328 | * Setup packet buffers, aligned correctly. | |
329 | */ | |
330 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
331 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
332 | for (i = 0; i < PKTBUFSRX; i++) { | |
333 | NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN; | |
334 | } | |
73a8b27c WD |
335 | } |
336 | ||
337 | if (!NetArpWaitTxPacket) { | |
338 | NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1); | |
339 | NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN; | |
340 | NetArpWaitTxPacketSize = 0; | |
2d966958 WD |
341 | } |
342 | ||
343 | eth_halt(); | |
6e592385 | 344 | #ifdef CONFIG_NET_MULTI |
a3d991bd | 345 | eth_set_current(); |
6e592385 | 346 | #endif |
b1bf6f2c WD |
347 | if (eth_init(bd) < 0) { |
348 | eth_halt(); | |
6e592385 | 349 | return(-1); |
b1bf6f2c | 350 | } |
2d966958 WD |
351 | |
352 | restart: | |
353 | #ifdef CONFIG_NET_MULTI | |
354 | memcpy (NetOurEther, eth_get_dev()->enetaddr, 6); | |
355 | #else | |
95823ca0 | 356 | eth_getenv_enetaddr("ethaddr", NetOurEther); |
2d966958 WD |
357 | #endif |
358 | ||
359 | NetState = NETLOOP_CONTINUE; | |
360 | ||
361 | /* | |
362 | * Start the ball rolling with the given start function. From | |
363 | * here on, this code is a state machine driven by received | |
364 | * packets and timer events. | |
365 | */ | |
2f70c49e | 366 | NetInitLoop(protocol); |
2d966958 WD |
367 | |
368 | switch (net_check_prereq (protocol)) { | |
369 | case 1: | |
370 | /* network not configured */ | |
b1bf6f2c | 371 | eth_halt(); |
1d0350ed | 372 | return (-1); |
2d966958 WD |
373 | |
374 | #ifdef CONFIG_NET_MULTI | |
375 | case 2: | |
376 | /* network device not configured */ | |
377 | break; | |
378 | #endif /* CONFIG_NET_MULTI */ | |
379 | ||
380 | case 0: | |
381 | #ifdef CONFIG_NET_MULTI | |
382 | NetDevExists = 1; | |
383 | #endif | |
384 | switch (protocol) { | |
385 | case TFTP: | |
386 | /* always use ARP to get server ethernet address */ | |
73a8b27c | 387 | TftpStart(); |
2d966958 WD |
388 | break; |
389 | ||
643d1ab2 | 390 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 391 | case DHCP: |
d407bf52 | 392 | BootpTry = 0; |
09133f85 | 393 | NetOurIP = 0; |
2d966958 WD |
394 | DhcpRequest(); /* Basically same as BOOTP */ |
395 | break; | |
610f2e9c | 396 | #endif |
2d966958 WD |
397 | |
398 | case BOOTP: | |
399 | BootpTry = 0; | |
09133f85 | 400 | NetOurIP = 0; |
2d966958 WD |
401 | BootpRequest (); |
402 | break; | |
403 | ||
404 | case RARP: | |
405 | RarpTry = 0; | |
09133f85 | 406 | NetOurIP = 0; |
2d966958 WD |
407 | RarpRequest (); |
408 | break; | |
643d1ab2 | 409 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
410 | case PING: |
411 | PingStart(); | |
412 | break; | |
cbd8a35c | 413 | #endif |
643d1ab2 | 414 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c WD |
415 | case NFS: |
416 | NfsStart(); | |
417 | break; | |
a3d991bd | 418 | #endif |
643d1ab2 | 419 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
420 | case CDP: |
421 | CDPStart(); | |
422 | break; | |
68ceb29e WD |
423 | #endif |
424 | #ifdef CONFIG_NETCONSOLE | |
425 | case NETCONS: | |
426 | NcStart(); | |
427 | break; | |
ea287deb | 428 | #endif |
643d1ab2 | 429 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
430 | case SNTP: |
431 | SntpStart(); | |
432 | break; | |
1a32bf41 RG |
433 | #endif |
434 | #if defined(CONFIG_CMD_DNS) | |
435 | case DNS: | |
436 | DnsStart(); | |
437 | break; | |
73a8b27c | 438 | #endif |
2d966958 WD |
439 | default: |
440 | break; | |
441 | } | |
442 | ||
443 | NetBootFileXferSize = 0; | |
444 | break; | |
445 | } | |
446 | ||
643d1ab2 | 447 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
6d0f6bcf | 448 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED) |
fc3e2165 | 449 | /* |
42d1f039 | 450 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 451 | */ |
6d0f6bcf | 452 | if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) { |
fc3e2165 WD |
453 | status_led_set (STATUS_LED_RED, STATUS_LED_OFF); |
454 | } else { | |
455 | status_led_set (STATUS_LED_RED, STATUS_LED_ON); | |
456 | } | |
6d0f6bcf | 457 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 458 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
459 | |
460 | /* | |
461 | * Main packet reception loop. Loop receiving packets until | |
59acc296 | 462 | * someone sets `NetState' to a state that terminates. |
2d966958 WD |
463 | */ |
464 | for (;;) { | |
465 | WATCHDOG_RESET(); | |
466 | #ifdef CONFIG_SHOW_ACTIVITY | |
467 | { | |
468 | extern void show_activity(int arg); | |
469 | show_activity(1); | |
470 | } | |
471 | #endif | |
472 | /* | |
473 | * Check the ethernet for a new packet. The ethernet | |
474 | * receive routine will process it. | |
475 | */ | |
40cb90ee | 476 | eth_rx(); |
2d966958 WD |
477 | |
478 | /* | |
479 | * Abort if ctrl-c was pressed. | |
480 | */ | |
481 | if (ctrlc()) { | |
8bde7f77 | 482 | eth_halt(); |
4b9206ed | 483 | puts ("\nAbort\n"); |
1d0350ed | 484 | return (-1); |
2d966958 WD |
485 | } |
486 | ||
73a8b27c | 487 | ArpTimeoutCheck(); |
2d966958 WD |
488 | |
489 | /* | |
490 | * Check for a timeout, and run the timeout handler | |
491 | * if we have one. | |
492 | */ | |
e0ac62d7 | 493 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
494 | thand_f *x; |
495 | ||
643d1ab2 | 496 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
6d0f6bcf | 497 | # if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
63153492 | 498 | defined(CONFIG_STATUS_LED) && \ |
59acc296 | 499 | defined(STATUS_LED_RED) |
fc3e2165 | 500 | /* |
42d1f039 | 501 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 502 | */ |
6d0f6bcf | 503 | if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) { |
fc3e2165 WD |
504 | status_led_set (STATUS_LED_RED, STATUS_LED_OFF); |
505 | } else { | |
506 | status_led_set (STATUS_LED_RED, STATUS_LED_ON); | |
507 | } | |
6d0f6bcf | 508 | # endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 509 | #endif /* CONFIG_MII, ... */ |
2d966958 WD |
510 | x = timeHandler; |
511 | timeHandler = (thand_f *)0; | |
512 | (*x)(); | |
513 | } | |
514 | ||
515 | ||
516 | switch (NetState) { | |
517 | ||
518 | case NETLOOP_RESTART: | |
519 | #ifdef CONFIG_NET_MULTI | |
520 | NetRestarted = 1; | |
521 | #endif | |
522 | goto restart; | |
523 | ||
524 | case NETLOOP_SUCCESS: | |
525 | if (NetBootFileXferSize > 0) { | |
f34024d4 | 526 | char buf[20]; |
2d966958 WD |
527 | printf("Bytes transferred = %ld (%lx hex)\n", |
528 | NetBootFileXferSize, | |
529 | NetBootFileXferSize); | |
f34024d4 | 530 | sprintf(buf, "%lX", NetBootFileXferSize); |
2d966958 | 531 | setenv("filesize", buf); |
a3d991bd WD |
532 | |
533 | sprintf(buf, "%lX", (unsigned long)load_addr); | |
534 | setenv("fileaddr", buf); | |
2d966958 WD |
535 | } |
536 | eth_halt(); | |
537 | return NetBootFileXferSize; | |
538 | ||
539 | case NETLOOP_FAIL: | |
1d0350ed | 540 | return (-1); |
2d966958 WD |
541 | } |
542 | } | |
543 | } | |
544 | ||
545 | /**********************************************************************/ | |
546 | ||
547 | static void | |
548 | startAgainTimeout(void) | |
549 | { | |
550 | NetState = NETLOOP_RESTART; | |
551 | } | |
552 | ||
553 | static void | |
554 | startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
555 | { | |
556 | /* Totally ignore the packet */ | |
557 | } | |
558 | ||
6e592385 | 559 | void NetStartAgain (void) |
2d966958 | 560 | { |
6e592385 | 561 | char *nretry; |
67b96e87 RB |
562 | int retry_forever = 0; |
563 | unsigned long retrycnt = 0; | |
564 | ||
565 | nretry = getenv("netretry"); | |
566 | if (nretry) { | |
567 | if (!strcmp(nretry, "yes")) | |
568 | retry_forever = 1; | |
569 | else if (!strcmp(nretry, "no")) | |
570 | retrycnt = 0; | |
571 | else if (!strcmp(nretry, "once")) | |
572 | retrycnt = 1; | |
573 | else | |
574 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
575 | } else | |
576 | retry_forever = 1; | |
577 | ||
578 | if ((!retry_forever) && (NetTryCount >= retrycnt)) { | |
579 | eth_halt(); | |
a3d991bd WD |
580 | NetState = NETLOOP_FAIL; |
581 | return; | |
582 | } | |
67b96e87 RB |
583 | |
584 | NetTryCount++; | |
585 | ||
2d966958 | 586 | #ifndef CONFIG_NET_MULTI |
49f3bdbb | 587 | NetSetTimeout (10000UL, startAgainTimeout); |
6e592385 WD |
588 | NetSetHandler (startAgainHandler); |
589 | #else /* !CONFIG_NET_MULTI*/ | |
590 | eth_halt (); | |
8b0c5c12 | 591 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
6e592385 | 592 | eth_try_another (!NetRestarted); |
8b0c5c12 | 593 | #endif |
6e592385 WD |
594 | eth_init (gd->bd); |
595 | if (NetRestartWrap) { | |
2d966958 | 596 | NetRestartWrap = 0; |
67b96e87 | 597 | if (NetDevExists) { |
49f3bdbb | 598 | NetSetTimeout (10000UL, startAgainTimeout); |
6e592385 WD |
599 | NetSetHandler (startAgainHandler); |
600 | } else { | |
2d966958 WD |
601 | NetState = NETLOOP_FAIL; |
602 | } | |
6e592385 | 603 | } else { |
2d966958 WD |
604 | NetState = NETLOOP_RESTART; |
605 | } | |
6e592385 | 606 | #endif /* CONFIG_NET_MULTI */ |
2d966958 WD |
607 | } |
608 | ||
609 | /**********************************************************************/ | |
610 | /* | |
611 | * Miscelaneous bits. | |
612 | */ | |
613 | ||
614 | void | |
615 | NetSetHandler(rxhand_f * f) | |
616 | { | |
617 | packetHandler = f; | |
618 | } | |
619 | ||
620 | ||
621 | void | |
3e01d75f | 622 | NetSetTimeout(ulong iv, thand_f * f) |
2d966958 WD |
623 | { |
624 | if (iv == 0) { | |
625 | timeHandler = (thand_f *)0; | |
626 | } else { | |
627 | timeHandler = f; | |
e0ac62d7 WD |
628 | timeStart = get_timer(0); |
629 | timeDelta = iv; | |
2d966958 WD |
630 | } |
631 | } | |
632 | ||
633 | ||
634 | void | |
635 | NetSendPacket(volatile uchar * pkt, int len) | |
636 | { | |
637 | (void) eth_send(pkt, len); | |
638 | } | |
639 | ||
73a8b27c WD |
640 | int |
641 | NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len) | |
642 | { | |
a3d991bd WD |
643 | uchar *pkt; |
644 | ||
73a8b27c WD |
645 | /* convert to new style broadcast */ |
646 | if (dest == 0) | |
647 | dest = 0xFFFFFFFF; | |
648 | ||
649 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
650 | if (dest == 0xFFFFFFFF) | |
651 | ether = NetBcastAddr; | |
652 | ||
653 | /* if MAC address was not discovered yet, save the packet and do an ARP request */ | |
654 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { | |
655 | ||
0ebf04c6 RG |
656 | debug("sending ARP for %08lx\n", dest); |
657 | ||
73a8b27c WD |
658 | NetArpWaitPacketIP = dest; |
659 | NetArpWaitPacketMAC = ether; | |
a3d991bd WD |
660 | |
661 | pkt = NetArpWaitTxPacket; | |
662 | pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP); | |
663 | ||
664 | NetSetIP (pkt, dest, dport, sport, len); | |
665 | memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len); | |
73a8b27c WD |
666 | |
667 | /* size of the waiting packet */ | |
a3d991bd | 668 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len; |
73a8b27c WD |
669 | |
670 | /* and do the ARP request */ | |
671 | NetArpWaitTry = 1; | |
672 | NetArpWaitTimerStart = get_timer(0); | |
673 | ArpRequest(); | |
674 | return 1; /* waiting */ | |
675 | } | |
676 | ||
0ebf04c6 | 677 | debug("sending UDP to %08lx/%pM\n", dest, ether); |
73a8b27c | 678 | |
a3d991bd WD |
679 | pkt = (uchar *)NetTxPacket; |
680 | pkt += NetSetEther (pkt, ether, PROT_IP); | |
681 | NetSetIP (pkt, dest, dport, sport, len); | |
682 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len); | |
73a8b27c | 683 | |
6e592385 | 684 | return 0; /* transmitted */ |
73a8b27c WD |
685 | } |
686 | ||
643d1ab2 | 687 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
688 | static ushort PingSeqNo; |
689 | ||
690 | int PingSend(void) | |
691 | { | |
692 | static uchar mac[6]; | |
693 | volatile IP_t *ip; | |
694 | volatile ushort *s; | |
a3d991bd | 695 | uchar *pkt; |
73a8b27c WD |
696 | |
697 | /* XXX always send arp request */ | |
698 | ||
699 | memcpy(mac, NetEtherNullAddr, 6); | |
700 | ||
0ebf04c6 | 701 | debug("sending ARP for %08lx\n", NetPingIP); |
73a8b27c WD |
702 | |
703 | NetArpWaitPacketIP = NetPingIP; | |
704 | NetArpWaitPacketMAC = mac; | |
705 | ||
a3d991bd WD |
706 | pkt = NetArpWaitTxPacket; |
707 | pkt += NetSetEther(pkt, mac, PROT_IP); | |
73a8b27c | 708 | |
a3d991bd | 709 | ip = (volatile IP_t *)pkt; |
73a8b27c WD |
710 | |
711 | /* | |
712 | * Construct an IP and ICMP header. (need to set no fragment bit - XXX) | |
713 | */ | |
714 | ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */ | |
715 | ip->ip_tos = 0; | |
716 | ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8); | |
717 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 718 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
73a8b27c WD |
719 | ip->ip_ttl = 255; |
720 | ip->ip_p = 0x01; /* ICMP */ | |
721 | ip->ip_sum = 0; | |
722 | NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */ | |
723 | NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */ | |
724 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
725 | ||
726 | s = &ip->udp_src; /* XXX ICMP starts here */ | |
727 | s[0] = htons(0x0800); /* echo-request, code */ | |
728 | s[1] = 0; /* checksum */ | |
53677ef1 | 729 | s[2] = 0; /* identifier */ |
73a8b27c WD |
730 | s[3] = htons(PingSeqNo++); /* sequence number */ |
731 | s[1] = ~NetCksum((uchar *)s, 8/2); | |
732 | ||
733 | /* size of the waiting packet */ | |
a3d991bd | 734 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8; |
73a8b27c WD |
735 | |
736 | /* and do the ARP request */ | |
737 | NetArpWaitTry = 1; | |
738 | NetArpWaitTimerStart = get_timer(0); | |
739 | ArpRequest(); | |
740 | return 1; /* waiting */ | |
741 | } | |
742 | ||
743 | static void | |
744 | PingTimeout (void) | |
745 | { | |
746 | eth_halt(); | |
747 | NetState = NETLOOP_FAIL; /* we did not get the reply */ | |
748 | } | |
2d966958 | 749 | |
73a8b27c WD |
750 | static void |
751 | PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
752 | { | |
753 | IPaddr_t tmp; | |
754 | volatile IP_t *ip = (volatile IP_t *)pkt; | |
755 | ||
756 | tmp = NetReadIP((void *)&ip->ip_src); | |
757 | if (tmp != NetPingIP) | |
758 | return; | |
759 | ||
760 | NetState = NETLOOP_SUCCESS; | |
761 | } | |
762 | ||
763 | static void PingStart(void) | |
764 | { | |
a3d991bd WD |
765 | #if defined(CONFIG_NET_MULTI) |
766 | printf ("Using %s device\n", eth_get_name()); | |
6e592385 | 767 | #endif /* CONFIG_NET_MULTI */ |
49f3bdbb | 768 | NetSetTimeout (10000UL, PingTimeout); |
73a8b27c WD |
769 | NetSetHandler (PingHandler); |
770 | ||
771 | PingSend(); | |
772 | } | |
610f2e9c | 773 | #endif |
2d966958 | 774 | |
643d1ab2 | 775 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
776 | |
777 | #define CDP_DEVICE_ID_TLV 0x0001 | |
778 | #define CDP_ADDRESS_TLV 0x0002 | |
779 | #define CDP_PORT_ID_TLV 0x0003 | |
780 | #define CDP_CAPABILITIES_TLV 0x0004 | |
781 | #define CDP_VERSION_TLV 0x0005 | |
782 | #define CDP_PLATFORM_TLV 0x0006 | |
783 | #define CDP_NATIVE_VLAN_TLV 0x000a | |
784 | #define CDP_APPLIANCE_VLAN_TLV 0x000e | |
785 | #define CDP_TRIGGER_TLV 0x000f | |
786 | #define CDP_POWER_CONSUMPTION_TLV 0x0010 | |
787 | #define CDP_SYSNAME_TLV 0x0014 | |
788 | #define CDP_SYSOBJECT_TLV 0x0015 | |
789 | #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016 | |
790 | ||
49f3bdbb | 791 | #define CDP_TIMEOUT 250UL /* one packet every 250ms */ |
a3d991bd WD |
792 | |
793 | static int CDPSeq; | |
794 | static int CDPOK; | |
795 | ||
796 | ushort CDPNativeVLAN; | |
797 | ushort CDPApplianceVLAN; | |
798 | ||
799 | static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 }; | |
800 | ||
801 | static ushort CDP_compute_csum(const uchar *buff, ushort len) | |
802 | { | |
803 | ushort csum; | |
804 | int odd; | |
805 | ulong result = 0; | |
806 | ushort leftover; | |
77ddac94 | 807 | ushort *p; |
a3d991bd WD |
808 | |
809 | if (len > 0) { | |
810 | odd = 1 & (ulong)buff; | |
811 | if (odd) { | |
812 | result = *buff << 8; | |
813 | len--; | |
814 | buff++; | |
815 | } | |
816 | while (len > 1) { | |
77ddac94 WD |
817 | p = (ushort *)buff; |
818 | result += *p++; | |
819 | buff = (uchar *)p; | |
a3d991bd WD |
820 | if (result & 0x80000000) |
821 | result = (result & 0xFFFF) + (result >> 16); | |
822 | len -= 2; | |
823 | } | |
824 | if (len) { | |
825 | leftover = (signed short)(*(const signed char *)buff); | |
3ada834e WD |
826 | /* CISCO SUCKS big time! (and blows too): |
827 | * CDP uses the IP checksum algorithm with a twist; | |
828 | * for the last byte it *sign* extends and sums. | |
829 | */ | |
a3d991bd WD |
830 | result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff); |
831 | } | |
832 | while (result >> 16) | |
833 | result = (result & 0xFFFF) + (result >> 16); | |
834 | ||
835 | if (odd) | |
836 | result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); | |
837 | } | |
838 | ||
839 | /* add up 16-bit and 17-bit words for 17+c bits */ | |
840 | result = (result & 0xffff) + (result >> 16); | |
841 | /* add up 16-bit and 2-bit for 16+c bit */ | |
842 | result = (result & 0xffff) + (result >> 16); | |
843 | /* add up carry.. */ | |
844 | result = (result & 0xffff) + (result >> 16); | |
845 | ||
846 | /* negate */ | |
847 | csum = ~(ushort)result; | |
848 | ||
849 | /* run time endian detection */ | |
850 | if (csum != htons(csum)) /* little endian */ | |
851 | csum = htons(csum); | |
852 | ||
853 | return csum; | |
854 | } | |
855 | ||
856 | int CDPSendTrigger(void) | |
857 | { | |
858 | volatile uchar *pkt; | |
859 | volatile ushort *s; | |
860 | volatile ushort *cp; | |
861 | Ethernet_t *et; | |
a3d991bd WD |
862 | int len; |
863 | ushort chksum; | |
6e592385 WD |
864 | #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \ |
865 | defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM) | |
866 | char buf[32]; | |
867 | #endif | |
a3d991bd WD |
868 | |
869 | pkt = NetTxPacket; | |
870 | et = (Ethernet_t *)pkt; | |
871 | ||
872 | /* NOTE: trigger sent not on any VLAN */ | |
873 | ||
874 | /* form ethernet header */ | |
875 | memcpy(et->et_dest, NetCDPAddr, 6); | |
876 | memcpy(et->et_src, NetOurEther, 6); | |
877 | ||
878 | pkt += ETHER_HDR_SIZE; | |
879 | ||
880 | /* SNAP header */ | |
881 | memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)); | |
882 | pkt += sizeof(CDP_SNAP_hdr); | |
883 | ||
884 | /* CDP header */ | |
885 | *pkt++ = 0x02; /* CDP version 2 */ | |
886 | *pkt++ = 180; /* TTL */ | |
887 | s = (volatile ushort *)pkt; | |
888 | cp = s; | |
889 | *s++ = htons(0); /* checksum (0 for later calculation) */ | |
890 | ||
891 | /* CDP fields */ | |
892 | #ifdef CONFIG_CDP_DEVICE_ID | |
893 | *s++ = htons(CDP_DEVICE_ID_TLV); | |
894 | *s++ = htons(CONFIG_CDP_DEVICE_ID); | |
95823ca0 | 895 | sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%pm", NetOurEther); |
a3d991bd WD |
896 | memcpy((uchar *)s, buf, 16); |
897 | s += 16 / 2; | |
898 | #endif | |
899 | ||
900 | #ifdef CONFIG_CDP_PORT_ID | |
901 | *s++ = htons(CDP_PORT_ID_TLV); | |
902 | memset(buf, 0, sizeof(buf)); | |
903 | sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index()); | |
904 | len = strlen(buf); | |
905 | if (len & 1) /* make it even */ | |
906 | len++; | |
907 | *s++ = htons(len + 4); | |
908 | memcpy((uchar *)s, buf, len); | |
909 | s += len / 2; | |
910 | #endif | |
911 | ||
912 | #ifdef CONFIG_CDP_CAPABILITIES | |
913 | *s++ = htons(CDP_CAPABILITIES_TLV); | |
914 | *s++ = htons(8); | |
915 | *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES); | |
916 | s += 2; | |
917 | #endif | |
918 | ||
919 | #ifdef CONFIG_CDP_VERSION | |
920 | *s++ = htons(CDP_VERSION_TLV); | |
921 | memset(buf, 0, sizeof(buf)); | |
922 | strcpy(buf, CONFIG_CDP_VERSION); | |
923 | len = strlen(buf); | |
924 | if (len & 1) /* make it even */ | |
925 | len++; | |
926 | *s++ = htons(len + 4); | |
927 | memcpy((uchar *)s, buf, len); | |
928 | s += len / 2; | |
929 | #endif | |
930 | ||
931 | #ifdef CONFIG_CDP_PLATFORM | |
932 | *s++ = htons(CDP_PLATFORM_TLV); | |
933 | memset(buf, 0, sizeof(buf)); | |
934 | strcpy(buf, CONFIG_CDP_PLATFORM); | |
935 | len = strlen(buf); | |
936 | if (len & 1) /* make it even */ | |
937 | len++; | |
938 | *s++ = htons(len + 4); | |
939 | memcpy((uchar *)s, buf, len); | |
940 | s += len / 2; | |
941 | #endif | |
942 | ||
943 | #ifdef CONFIG_CDP_TRIGGER | |
944 | *s++ = htons(CDP_TRIGGER_TLV); | |
945 | *s++ = htons(8); | |
946 | *(ulong *)s = htonl(CONFIG_CDP_TRIGGER); | |
947 | s += 2; | |
948 | #endif | |
949 | ||
950 | #ifdef CONFIG_CDP_POWER_CONSUMPTION | |
951 | *s++ = htons(CDP_POWER_CONSUMPTION_TLV); | |
952 | *s++ = htons(6); | |
953 | *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION); | |
954 | #endif | |
955 | ||
956 | /* length of ethernet packet */ | |
957 | len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE); | |
958 | et->et_protlen = htons(len); | |
959 | ||
960 | len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr); | |
961 | chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len)); | |
962 | if (chksum == 0) | |
963 | chksum = 0xFFFF; | |
964 | *cp = htons(chksum); | |
965 | ||
966 | (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket); | |
967 | return 0; | |
968 | } | |
969 | ||
970 | static void | |
971 | CDPTimeout (void) | |
972 | { | |
973 | CDPSeq++; | |
974 | ||
975 | if (CDPSeq < 3) { | |
976 | NetSetTimeout (CDP_TIMEOUT, CDPTimeout); | |
977 | CDPSendTrigger(); | |
978 | return; | |
979 | } | |
980 | ||
981 | /* if not OK try again */ | |
982 | if (!CDPOK) | |
983 | NetStartAgain(); | |
984 | else | |
985 | NetState = NETLOOP_SUCCESS; | |
986 | } | |
987 | ||
988 | static void | |
989 | CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
990 | { | |
991 | /* nothing */ | |
992 | } | |
993 | ||
994 | static void | |
995 | CDPHandler(const uchar * pkt, unsigned len) | |
996 | { | |
997 | const uchar *t; | |
998 | const ushort *ss; | |
999 | ushort type, tlen; | |
1000 | uchar applid; | |
1001 | ushort vlan, nvlan; | |
1002 | ||
1003 | /* minimum size? */ | |
1004 | if (len < sizeof(CDP_SNAP_hdr) + 4) | |
1005 | goto pkt_short; | |
1006 | ||
1007 | /* check for valid CDP SNAP header */ | |
1008 | if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0) | |
1009 | return; | |
1010 | ||
1011 | pkt += sizeof(CDP_SNAP_hdr); | |
1012 | len -= sizeof(CDP_SNAP_hdr); | |
1013 | ||
1014 | /* Version of CDP protocol must be >= 2 and TTL != 0 */ | |
1015 | if (pkt[0] < 0x02 || pkt[1] == 0) | |
1016 | return; | |
1017 | ||
1018 | /* if version is greater than 0x02 maybe we'll have a problem; output a warning */ | |
1019 | if (pkt[0] != 0x02) | |
1020 | printf("** WARNING: CDP packet received with a protocol version %d > 2\n", | |
1021 | pkt[0] & 0xff); | |
1022 | ||
1023 | if (CDP_compute_csum(pkt, len) != 0) | |
1024 | return; | |
1025 | ||
1026 | pkt += 4; | |
1027 | len -= 4; | |
1028 | ||
1029 | vlan = htons(-1); | |
1030 | nvlan = htons(-1); | |
1031 | while (len > 0) { | |
1032 | if (len < 4) | |
1033 | goto pkt_short; | |
1034 | ||
1035 | ss = (const ushort *)pkt; | |
1036 | type = ntohs(ss[0]); | |
1037 | tlen = ntohs(ss[1]); | |
1038 | if (tlen > len) { | |
1039 | goto pkt_short; | |
1040 | } | |
1041 | ||
1042 | pkt += tlen; | |
1043 | len -= tlen; | |
1044 | ||
1045 | ss += 2; /* point ss to the data of the TLV */ | |
1046 | tlen -= 4; | |
1047 | ||
1048 | switch (type) { | |
1049 | case CDP_DEVICE_ID_TLV: | |
1050 | break; | |
1051 | case CDP_ADDRESS_TLV: | |
1052 | break; | |
1053 | case CDP_PORT_ID_TLV: | |
1054 | break; | |
1055 | case CDP_CAPABILITIES_TLV: | |
1056 | break; | |
1057 | case CDP_VERSION_TLV: | |
1058 | break; | |
1059 | case CDP_PLATFORM_TLV: | |
1060 | break; | |
1061 | case CDP_NATIVE_VLAN_TLV: | |
1062 | nvlan = *ss; | |
1063 | break; | |
1064 | case CDP_APPLIANCE_VLAN_TLV: | |
1065 | t = (const uchar *)ss; | |
1066 | while (tlen > 0) { | |
1067 | if (tlen < 3) | |
1068 | goto pkt_short; | |
1069 | ||
1070 | applid = t[0]; | |
1071 | ss = (const ushort *)(t + 1); | |
1072 | ||
1073 | #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE | |
1074 | if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE) | |
1075 | vlan = *ss; | |
1076 | #else | |
1077 | vlan = ntohs(*ss); /* XXX will this work; dunno */ | |
1078 | #endif | |
1079 | t += 3; tlen -= 3; | |
1080 | } | |
1081 | break; | |
1082 | case CDP_TRIGGER_TLV: | |
1083 | break; | |
1084 | case CDP_POWER_CONSUMPTION_TLV: | |
1085 | break; | |
1086 | case CDP_SYSNAME_TLV: | |
1087 | break; | |
1088 | case CDP_SYSOBJECT_TLV: | |
1089 | break; | |
1090 | case CDP_MANAGEMENT_ADDRESS_TLV: | |
1091 | break; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | CDPApplianceVLAN = vlan; | |
1096 | CDPNativeVLAN = nvlan; | |
1097 | ||
1098 | CDPOK = 1; | |
1099 | return; | |
1100 | ||
1101 | pkt_short: | |
1102 | printf("** CDP packet is too short\n"); | |
1103 | return; | |
1104 | } | |
1105 | ||
1106 | static void CDPStart(void) | |
1107 | { | |
1108 | #if defined(CONFIG_NET_MULTI) | |
1109 | printf ("Using %s device\n", eth_get_name()); | |
1110 | #endif | |
1111 | CDPSeq = 0; | |
1112 | CDPOK = 0; | |
1113 | ||
1114 | CDPNativeVLAN = htons(-1); | |
1115 | CDPApplianceVLAN = htons(-1); | |
1116 | ||
1117 | NetSetTimeout (CDP_TIMEOUT, CDPTimeout); | |
1118 | NetSetHandler (CDPDummyHandler); | |
1119 | ||
1120 | CDPSendTrigger(); | |
1121 | } | |
610f2e9c | 1122 | #endif |
a3d991bd | 1123 | |
5cfaa4e5 AR |
1124 | #ifdef CONFIG_IP_DEFRAG |
1125 | /* | |
1126 | * This function collects fragments in a single packet, according | |
1127 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
1128 | * a complete packet, in static storage | |
1129 | */ | |
1130 | #ifndef CONFIG_NET_MAXDEFRAG | |
1131 | #define CONFIG_NET_MAXDEFRAG 16384 | |
1132 | #endif | |
1133 | /* | |
1134 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
1135 | * so we need to add the NFS overhead, which is more than TFTP. | |
1136 | * To use sizeof in the internal unnamed structures, we need a real | |
1137 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
1138 | * The compiler doesn't complain nor allocates the actual structure | |
1139 | */ | |
1140 | static struct rpc_t rpc_specimen; | |
1141 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
1142 | ||
1143 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP) | |
1144 | ||
1145 | /* | |
1146 | * this is the packet being assembled, either data or frag control. | |
1147 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
1148 | */ | |
1149 | struct hole { | |
1150 | /* first_byte is address of this structure */ | |
1151 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
1152 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
1153 | u16 prev_hole; /* index of prev, 0 == none */ | |
1154 | u16 unused; | |
1155 | }; | |
1156 | ||
1157 | static IP_t *__NetDefragment(IP_t *ip, int *lenp) | |
1158 | { | |
1159 | static uchar pkt_buff[IP_PKTSIZE] __attribute__((aligned(PKTALIGN))); | |
1160 | static u16 first_hole, total_len; | |
1161 | struct hole *payload, *thisfrag, *h, *newh; | |
1162 | IP_t *localip = (IP_t *)pkt_buff; | |
1163 | uchar *indata = (uchar *)ip; | |
1164 | int offset8, start, len, done = 0; | |
1165 | u16 ip_off = ntohs(ip->ip_off); | |
1166 | ||
1167 | /* payload starts after IP header, this fragment is in there */ | |
1168 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE_NO_UDP); | |
1169 | offset8 = (ip_off & IP_OFFS); | |
1170 | thisfrag = payload + offset8; | |
1171 | start = offset8 * 8; | |
1172 | len = ntohs(ip->ip_len) - IP_HDR_SIZE_NO_UDP; | |
1173 | ||
1174 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
1175 | return NULL; | |
1176 | ||
1177 | if (!total_len || localip->ip_id != ip->ip_id) { | |
1178 | /* new (or different) packet, reset structs */ | |
1179 | total_len = 0xffff; | |
1180 | payload[0].last_byte = ~0; | |
1181 | payload[0].next_hole = 0; | |
1182 | payload[0].prev_hole = 0; | |
1183 | first_hole = 0; | |
1184 | /* any IP header will work, copy the first we received */ | |
1185 | memcpy(localip, ip, IP_HDR_SIZE_NO_UDP); | |
1186 | } | |
1187 | ||
1188 | /* | |
1189 | * What follows is the reassembly algorithm. We use the payload | |
1190 | * array as a linked list of hole descriptors, as each hole starts | |
1191 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
1192 | * so it is represented as byte count, not as 8-byte blocks. | |
1193 | */ | |
1194 | ||
1195 | h = payload + first_hole; | |
1196 | while (h->last_byte < start) { | |
1197 | if (!h->next_hole) { | |
1198 | /* no hole that far away */ | |
1199 | return NULL; | |
1200 | } | |
1201 | h = payload + h->next_hole; | |
1202 | } | |
1203 | ||
1204 | if (offset8 + (len / 8) <= h - payload) { | |
1205 | /* no overlap with holes (dup fragment?) */ | |
1206 | return NULL; | |
1207 | } | |
1208 | ||
1209 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
1210 | /* no more fragmentss: truncate this (last) hole */ | |
1211 | total_len = start + len; | |
1212 | h->last_byte = start + len; | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * There is some overlap: fix the hole list. This code doesn't | |
1217 | * deal with a fragment that overlaps with two different holes | |
1218 | * (thus being a superset of a previously-received fragment). | |
1219 | */ | |
1220 | ||
1221 | if ( (h >= thisfrag) && (h->last_byte <= start + len) ) { | |
1222 | /* complete overlap with hole: remove hole */ | |
1223 | if (!h->prev_hole && !h->next_hole) { | |
1224 | /* last remaining hole */ | |
1225 | done = 1; | |
1226 | } else if (!h->prev_hole) { | |
1227 | /* first hole */ | |
1228 | first_hole = h->next_hole; | |
1229 | payload[h->next_hole].prev_hole = 0; | |
1230 | } else if (!h->next_hole) { | |
1231 | /* last hole */ | |
1232 | payload[h->prev_hole].next_hole = 0; | |
1233 | } else { | |
1234 | /* in the middle of the list */ | |
1235 | payload[h->next_hole].prev_hole = h->prev_hole; | |
1236 | payload[h->prev_hole].next_hole = h->next_hole; | |
1237 | } | |
1238 | ||
1239 | } else if (h->last_byte <= start + len) { | |
1240 | /* overlaps with final part of the hole: shorten this hole */ | |
1241 | h->last_byte = start; | |
1242 | ||
1243 | } else if (h >= thisfrag) { | |
1244 | /* overlaps with initial part of the hole: move this hole */ | |
1245 | newh = thisfrag + (len / 8); | |
1246 | *newh = *h; | |
1247 | h = newh; | |
1248 | if (h->next_hole) | |
1249 | payload[h->next_hole].prev_hole = (h - payload); | |
1250 | if (h->prev_hole) | |
1251 | payload[h->prev_hole].next_hole = (h - payload); | |
1252 | else | |
1253 | first_hole = (h - payload); | |
1254 | ||
1255 | } else { | |
1256 | /* fragment sits in the middle: split the hole */ | |
1257 | newh = thisfrag + (len / 8); | |
1258 | *newh = *h; | |
1259 | h->last_byte = start; | |
1260 | h->next_hole = (newh - payload); | |
1261 | newh->prev_hole = (h - payload); | |
1262 | if (newh->next_hole) | |
1263 | payload[newh->next_hole].prev_hole = (newh - payload); | |
1264 | } | |
1265 | ||
1266 | /* finally copy this fragment and possibly return whole packet */ | |
1267 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE_NO_UDP, len); | |
1268 | if (!done) | |
1269 | return NULL; | |
1270 | ||
1271 | localip->ip_len = htons(total_len); | |
1272 | *lenp = total_len + IP_HDR_SIZE_NO_UDP; | |
1273 | return localip; | |
1274 | } | |
1275 | ||
1276 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
1277 | { | |
1278 | u16 ip_off = ntohs(ip->ip_off); | |
1279 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1280 | return ip; /* not a fragment */ | |
1281 | return __NetDefragment(ip, lenp); | |
1282 | } | |
1283 | ||
1284 | #else /* !CONFIG_IP_DEFRAG */ | |
1285 | ||
1286 | static inline IP_t *NetDefragment(IP_t *ip, int *lenp) | |
1287 | { | |
1288 | u16 ip_off = ntohs(ip->ip_off); | |
1289 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1290 | return ip; /* not a fragment */ | |
1291 | return NULL; | |
1292 | } | |
1293 | #endif | |
a3d991bd | 1294 | |
2d966958 | 1295 | void |
a3d991bd | 1296 | NetReceive(volatile uchar * inpkt, int len) |
2d966958 WD |
1297 | { |
1298 | Ethernet_t *et; | |
1299 | IP_t *ip; | |
1300 | ARP_t *arp; | |
1301 | IPaddr_t tmp; | |
1302 | int x; | |
a3d991bd | 1303 | uchar *pkt; |
643d1ab2 | 1304 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1305 | int iscdp; |
1306 | #endif | |
1307 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1308 | ||
0ebf04c6 | 1309 | debug("packet received\n"); |
2d966958 | 1310 | |
d9bec9f4 MF |
1311 | NetRxPacket = inpkt; |
1312 | NetRxPacketLen = len; | |
a3d991bd WD |
1313 | et = (Ethernet_t *)inpkt; |
1314 | ||
1315 | /* too small packet? */ | |
1316 | if (len < ETHER_HDR_SIZE) | |
1317 | return; | |
1318 | ||
f85b6071 RJ |
1319 | #ifdef CONFIG_API |
1320 | if (push_packet) { | |
1321 | (*push_packet)(inpkt, len); | |
1322 | return; | |
1323 | } | |
1324 | #endif | |
1325 | ||
643d1ab2 | 1326 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1327 | /* keep track if packet is CDP */ |
1328 | iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0; | |
1329 | #endif | |
1330 | ||
1331 | myvlanid = ntohs(NetOurVLAN); | |
1332 | if (myvlanid == (ushort)-1) | |
1333 | myvlanid = VLAN_NONE; | |
1334 | mynvlanid = ntohs(NetOurNativeVLAN); | |
1335 | if (mynvlanid == (ushort)-1) | |
1336 | mynvlanid = VLAN_NONE; | |
2d966958 WD |
1337 | |
1338 | x = ntohs(et->et_protlen); | |
1339 | ||
0ebf04c6 | 1340 | debug("packet received\n"); |
a3d991bd | 1341 | |
2d966958 WD |
1342 | if (x < 1514) { |
1343 | /* | |
1344 | * Got a 802 packet. Check the other protocol field. | |
1345 | */ | |
1346 | x = ntohs(et->et_prot); | |
a3d991bd WD |
1347 | |
1348 | ip = (IP_t *)(inpkt + E802_HDR_SIZE); | |
2d966958 | 1349 | len -= E802_HDR_SIZE; |
a3d991bd WD |
1350 | |
1351 | } else if (x != PROT_VLAN) { /* normal packet */ | |
1352 | ip = (IP_t *)(inpkt + ETHER_HDR_SIZE); | |
2d966958 | 1353 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1354 | |
1355 | } else { /* VLAN packet */ | |
1356 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et; | |
1357 | ||
0ebf04c6 RG |
1358 | debug("VLAN packet received\n"); |
1359 | ||
a3d991bd WD |
1360 | /* too small packet? */ |
1361 | if (len < VLAN_ETHER_HDR_SIZE) | |
1362 | return; | |
1363 | ||
1364 | /* if no VLAN active */ | |
1365 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
643d1ab2 | 1366 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1367 | && iscdp == 0 |
1368 | #endif | |
1369 | ) | |
1370 | return; | |
1371 | ||
1372 | cti = ntohs(vet->vet_tag); | |
1373 | vlanid = cti & VLAN_IDMASK; | |
1374 | x = ntohs(vet->vet_type); | |
1375 | ||
1376 | ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE); | |
1377 | len -= VLAN_ETHER_HDR_SIZE; | |
2d966958 WD |
1378 | } |
1379 | ||
0ebf04c6 | 1380 | debug("Receive from protocol 0x%x\n", x); |
2d966958 | 1381 | |
643d1ab2 | 1382 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1383 | if (iscdp) { |
1384 | CDPHandler((uchar *)ip, len); | |
1385 | return; | |
1386 | } | |
1387 | #endif | |
1388 | ||
1389 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1390 | if (vlanid == VLAN_NONE) | |
1391 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1392 | /* not matched? */ | |
1393 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1394 | return; | |
1395 | } | |
1396 | ||
2d966958 WD |
1397 | switch (x) { |
1398 | ||
1399 | case PROT_ARP: | |
1400 | /* | |
1401 | * We have to deal with two types of ARP packets: | |
8bde7f77 WD |
1402 | * - REQUEST packets will be answered by sending our |
1403 | * IP address - if we know it. | |
1404 | * - REPLY packates are expected only after we asked | |
1405 | * for the TFTP server's or the gateway's ethernet | |
1406 | * address; so if we receive such a packet, we set | |
1407 | * the server ethernet address | |
2d966958 | 1408 | */ |
0ebf04c6 RG |
1409 | debug("Got ARP\n"); |
1410 | ||
2d966958 WD |
1411 | arp = (ARP_t *)ip; |
1412 | if (len < ARP_HDR_SIZE) { | |
1413 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1414 | return; | |
1415 | } | |
1416 | if (ntohs(arp->ar_hrd) != ARP_ETHER) { | |
1417 | return; | |
1418 | } | |
1419 | if (ntohs(arp->ar_pro) != PROT_IP) { | |
1420 | return; | |
1421 | } | |
1422 | if (arp->ar_hln != 6) { | |
1423 | return; | |
1424 | } | |
1425 | if (arp->ar_pln != 4) { | |
1426 | return; | |
1427 | } | |
1428 | ||
1429 | if (NetOurIP == 0) { | |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | if (NetReadIP(&arp->ar_data[16]) != NetOurIP) { | |
1434 | return; | |
1435 | } | |
1436 | ||
1437 | switch (ntohs(arp->ar_op)) { | |
1438 | case ARPOP_REQUEST: /* reply with our IP address */ | |
0ebf04c6 | 1439 | debug("Got ARP REQUEST, return our IP\n"); |
a3d991bd WD |
1440 | pkt = (uchar *)et; |
1441 | pkt += NetSetEther(pkt, et->et_src, PROT_ARP); | |
2d966958 WD |
1442 | arp->ar_op = htons(ARPOP_REPLY); |
1443 | memcpy (&arp->ar_data[10], &arp->ar_data[0], 6); | |
1444 | NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]); | |
1445 | memcpy (&arp->ar_data[ 0], NetOurEther, 6); | |
1446 | NetCopyIP(&arp->ar_data[ 6], &NetOurIP); | |
a3d991bd | 1447 | (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE); |
2d966958 | 1448 | return; |
73a8b27c WD |
1449 | |
1450 | case ARPOP_REPLY: /* arp reply */ | |
1451 | /* are we waiting for a reply */ | |
1452 | if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC) | |
1453 | break; | |
97cfe861 RG |
1454 | |
1455 | #ifdef CONFIG_KEEP_SERVERADDR | |
1456 | if (NetServerIP == NetArpWaitPacketIP) { | |
1457 | char buf[20]; | |
1458 | sprintf(buf, "%pM", arp->ar_data); | |
1459 | setenv("serveraddr", buf); | |
1460 | } | |
1461 | #endif | |
1462 | ||
0ebf04c6 | 1463 | debug("Got ARP REPLY, set server/gtwy eth addr (%pM)\n", |
95823ca0 | 1464 | arp->ar_data); |
73a8b27c WD |
1465 | |
1466 | tmp = NetReadIP(&arp->ar_data[6]); | |
1467 | ||
1468 | /* matched waiting packet's address */ | |
1469 | if (tmp == NetArpWaitReplyIP) { | |
0ebf04c6 | 1470 | debug("Got it\n"); |
73a8b27c WD |
1471 | /* save address for later use */ |
1472 | memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6); | |
1473 | ||
68ceb29e WD |
1474 | #ifdef CONFIG_NETCONSOLE |
1475 | (*packetHandler)(0,0,0,0); | |
1476 | #endif | |
73a8b27c WD |
1477 | /* modify header, and transmit it */ |
1478 | memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6); | |
1479 | (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize); | |
1480 | ||
1481 | /* no arp request pending now */ | |
1482 | NetArpWaitPacketIP = 0; | |
1483 | NetArpWaitTxPacketSize = 0; | |
1484 | NetArpWaitPacketMAC = NULL; | |
1485 | ||
1486 | } | |
2d966958 WD |
1487 | return; |
1488 | default: | |
0ebf04c6 | 1489 | debug("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op)); |
2d966958 WD |
1490 | return; |
1491 | } | |
289f932c | 1492 | break; |
2d966958 WD |
1493 | |
1494 | case PROT_RARP: | |
0ebf04c6 | 1495 | debug("Got RARP\n"); |
2d966958 WD |
1496 | arp = (ARP_t *)ip; |
1497 | if (len < ARP_HDR_SIZE) { | |
1498 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1499 | return; | |
1500 | } | |
1501 | ||
1502 | if ((ntohs(arp->ar_op) != RARPOP_REPLY) || | |
1503 | (ntohs(arp->ar_hrd) != ARP_ETHER) || | |
1504 | (ntohs(arp->ar_pro) != PROT_IP) || | |
1505 | (arp->ar_hln != 6) || (arp->ar_pln != 4)) { | |
1506 | ||
4b9206ed | 1507 | puts ("invalid RARP header\n"); |
2d966958 WD |
1508 | } else { |
1509 | NetCopyIP(&NetOurIP, &arp->ar_data[16]); | |
3d3befa7 WD |
1510 | if (NetServerIP == 0) |
1511 | NetCopyIP(&NetServerIP, &arp->ar_data[ 6]); | |
2d966958 WD |
1512 | memcpy (NetServerEther, &arp->ar_data[ 0], 6); |
1513 | ||
1514 | (*packetHandler)(0,0,0,0); | |
1515 | } | |
1516 | break; | |
1517 | ||
1518 | case PROT_IP: | |
0ebf04c6 | 1519 | debug("Got IP\n"); |
5cfaa4e5 | 1520 | /* Before we start poking the header, make sure it is there */ |
2d966958 | 1521 | if (len < IP_HDR_SIZE) { |
0ebf04c6 | 1522 | debug("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE); |
2d966958 WD |
1523 | return; |
1524 | } | |
5cfaa4e5 | 1525 | /* Check the packet length */ |
2d966958 WD |
1526 | if (len < ntohs(ip->ip_len)) { |
1527 | printf("len bad %d < %d\n", len, ntohs(ip->ip_len)); | |
1528 | return; | |
1529 | } | |
1530 | len = ntohs(ip->ip_len); | |
0ebf04c6 RG |
1531 | debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff); |
1532 | ||
5cfaa4e5 | 1533 | /* Can't deal with anything except IPv4 */ |
2d966958 WD |
1534 | if ((ip->ip_hl_v & 0xf0) != 0x40) { |
1535 | return; | |
1536 | } | |
5cfaa4e5 | 1537 | /* Can't deal with IP options (headers != 20 bytes) */ |
6b52cfe1 RB |
1538 | if ((ip->ip_hl_v & 0x0f) > 0x05) { |
1539 | return; | |
1540 | } | |
5cfaa4e5 | 1541 | /* Check the Checksum of the header */ |
2d966958 | 1542 | if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) { |
4b9206ed | 1543 | puts ("checksum bad\n"); |
2d966958 WD |
1544 | return; |
1545 | } | |
5cfaa4e5 | 1546 | /* If it is not for us, ignore it */ |
2d966958 WD |
1547 | tmp = NetReadIP(&ip->ip_dst); |
1548 | if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) { | |
53a5c424 | 1549 | #ifdef CONFIG_MCAST_TFTP |
85eb5caf | 1550 | if (Mcast_addr != tmp) |
53a5c424 | 1551 | #endif |
2d966958 WD |
1552 | return; |
1553 | } | |
5cfaa4e5 AR |
1554 | /* |
1555 | * The function returns the unchanged packet if it's not | |
1556 | * a fragment, and either the complete packet or NULL if | |
1557 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1558 | */ | |
1559 | if (!(ip = NetDefragment(ip, &len))) | |
1560 | return; | |
2d966958 WD |
1561 | /* |
1562 | * watch for ICMP host redirects | |
1563 | * | |
8bde7f77 WD |
1564 | * There is no real handler code (yet). We just watch |
1565 | * for ICMP host redirect messages. In case anybody | |
1566 | * sees these messages: please contact me | |
1567 | * (wd@denx.de), or - even better - send me the | |
1568 | * necessary fixes :-) | |
2d966958 | 1569 | * |
8bde7f77 WD |
1570 | * Note: in all cases where I have seen this so far |
1571 | * it was a problem with the router configuration, | |
1572 | * for instance when a router was configured in the | |
1573 | * BOOTP reply, but the TFTP server was on the same | |
1574 | * subnet. So this is probably a warning that your | |
1575 | * configuration might be wrong. But I'm not really | |
1576 | * sure if there aren't any other situations. | |
2d966958 WD |
1577 | */ |
1578 | if (ip->ip_p == IPPROTO_ICMP) { | |
1579 | ICMP_t *icmph = (ICMP_t *)&(ip->udp_src); | |
1580 | ||
73a8b27c WD |
1581 | switch (icmph->type) { |
1582 | case ICMP_REDIRECT: | |
90dc6704 WD |
1583 | if (icmph->code != ICMP_REDIR_HOST) |
1584 | return; | |
b6446b67 | 1585 | printf (" ICMP Host Redirect to %pI4 ", &icmph->un.gateway); |
8534bf9a | 1586 | return; |
643d1ab2 | 1587 | #if defined(CONFIG_CMD_PING) |
73a8b27c WD |
1588 | case ICMP_ECHO_REPLY: |
1589 | /* | |
1590 | * IP header OK. Pass the packet to the current handler. | |
1591 | */ | |
1592 | /* XXX point to ip packet */ | |
1593 | (*packetHandler)((uchar *)ip, 0, 0, 0); | |
8534bf9a | 1594 | return; |
83853178 | 1595 | case ICMP_ECHO_REQUEST: |
0ebf04c6 | 1596 | debug("Got ICMP ECHO REQUEST, return %d bytes \n", |
83853178 | 1597 | ETHER_HDR_SIZE + len); |
0ebf04c6 | 1598 | |
83853178 ES |
1599 | memcpy (&et->et_dest[0], &et->et_src[0], 6); |
1600 | memcpy (&et->et_src[ 0], NetOurEther, 6); | |
1601 | ||
1602 | ip->ip_sum = 0; | |
1603 | ip->ip_off = 0; | |
1604 | NetCopyIP((void*)&ip->ip_dst, &ip->ip_src); | |
1605 | NetCopyIP((void*)&ip->ip_src, &NetOurIP); | |
1606 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1); | |
1607 | ||
1608 | icmph->type = ICMP_ECHO_REPLY; | |
1609 | icmph->checksum = 0; | |
1610 | icmph->checksum = ~NetCksum((uchar *)icmph, | |
1611 | (len - IP_HDR_SIZE_NO_UDP) >> 1); | |
1612 | (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len); | |
1613 | return; | |
73a8b27c WD |
1614 | #endif |
1615 | default: | |
1616 | return; | |
1617 | } | |
2d966958 WD |
1618 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1619 | return; | |
1620 | } | |
1621 | ||
8534bf9a SR |
1622 | #ifdef CONFIG_UDP_CHECKSUM |
1623 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1624 | ulong xsum; |
8534bf9a SR |
1625 | ushort *sumptr; |
1626 | ushort sumlen; | |
1627 | ||
1628 | xsum = ip->ip_p; | |
1629 | xsum += (ntohs(ip->udp_len)); | |
1630 | xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff; | |
1631 | xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff; | |
1632 | xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff; | |
1633 | xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff; | |
1634 | ||
1635 | sumlen = ntohs(ip->udp_len); | |
1636 | sumptr = (ushort *) &(ip->udp_src); | |
1637 | ||
1638 | while (sumlen > 1) { | |
b2f50807 | 1639 | ushort sumdata; |
8534bf9a SR |
1640 | |
1641 | sumdata = *sumptr++; | |
1642 | xsum += ntohs(sumdata); | |
1643 | sumlen -= 2; | |
1644 | } | |
1645 | if (sumlen > 0) { | |
b2f50807 | 1646 | ushort sumdata; |
8534bf9a SR |
1647 | |
1648 | sumdata = *(unsigned char *) sumptr; | |
b2f50807 | 1649 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1650 | xsum += sumdata; |
1651 | } | |
1652 | while ((xsum >> 16) != 0) { | |
b2f50807 | 1653 | xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff); |
8534bf9a SR |
1654 | } |
1655 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 WD |
1656 | printf(" UDP wrong checksum %08lx %08x\n", |
1657 | xsum, ntohs(ip->udp_xsum)); | |
8534bf9a SR |
1658 | return; |
1659 | } | |
1660 | } | |
1661 | #endif | |
1662 | ||
53a5c424 | 1663 | |
68ceb29e WD |
1664 | #ifdef CONFIG_NETCONSOLE |
1665 | nc_input_packet((uchar *)ip +IP_HDR_SIZE, | |
1666 | ntohs(ip->udp_dst), | |
1667 | ntohs(ip->udp_src), | |
1668 | ntohs(ip->udp_len) - 8); | |
1669 | #endif | |
2d966958 WD |
1670 | /* |
1671 | * IP header OK. Pass the packet to the current handler. | |
1672 | */ | |
1673 | (*packetHandler)((uchar *)ip +IP_HDR_SIZE, | |
1674 | ntohs(ip->udp_dst), | |
1675 | ntohs(ip->udp_src), | |
1676 | ntohs(ip->udp_len) - 8); | |
2d966958 WD |
1677 | break; |
1678 | } | |
1679 | } | |
1680 | ||
1681 | ||
1682 | /**********************************************************************/ | |
1683 | ||
1684 | static int net_check_prereq (proto_t protocol) | |
1685 | { | |
1686 | switch (protocol) { | |
6e592385 | 1687 | /* Fall through */ |
643d1ab2 | 1688 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1689 | case PING: |
6e592385 WD |
1690 | if (NetPingIP == 0) { |
1691 | puts ("*** ERROR: ping address not given\n"); | |
1692 | return (1); | |
1693 | } | |
1694 | goto common; | |
cbd8a35c | 1695 | #endif |
643d1ab2 | 1696 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
1697 | case SNTP: |
1698 | if (NetNtpServerIP == 0) { | |
1699 | puts ("*** ERROR: NTP server address not given\n"); | |
1700 | return (1); | |
1701 | } | |
1702 | goto common; | |
1703 | #endif | |
1a32bf41 RG |
1704 | #if defined(CONFIG_CMD_DNS) |
1705 | case DNS: | |
1706 | if (NetOurDNSIP == 0) { | |
1707 | puts("*** ERROR: DNS server address not given\n"); | |
1708 | return 1; | |
1709 | } | |
1710 | goto common; | |
1711 | #endif | |
643d1ab2 | 1712 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1713 | case NFS: |
73a8b27c | 1714 | #endif |
68ceb29e | 1715 | case NETCONS: |
2d966958 | 1716 | case TFTP: |
6e592385 WD |
1717 | if (NetServerIP == 0) { |
1718 | puts ("*** ERROR: `serverip' not set\n"); | |
1719 | return (1); | |
1720 | } | |
643d1ab2 | 1721 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) |
b2f50807 | 1722 | common: |
73a8b27c WD |
1723 | #endif |
1724 | ||
6e592385 WD |
1725 | if (NetOurIP == 0) { |
1726 | puts ("*** ERROR: `ipaddr' not set\n"); | |
1727 | return (1); | |
1728 | } | |
1729 | /* Fall through */ | |
2d966958 WD |
1730 | |
1731 | case DHCP: | |
1732 | case RARP: | |
1733 | case BOOTP: | |
a3d991bd | 1734 | case CDP: |
6e592385 | 1735 | if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
2d966958 | 1736 | #ifdef CONFIG_NET_MULTI |
6e592385 WD |
1737 | extern int eth_get_dev_index (void); |
1738 | int num = eth_get_dev_index (); | |
2d966958 | 1739 | |
6e592385 WD |
1740 | switch (num) { |
1741 | case -1: | |
2d966958 WD |
1742 | puts ("*** ERROR: No ethernet found.\n"); |
1743 | return (1); | |
6e592385 | 1744 | case 0: |
2d966958 WD |
1745 | puts ("*** ERROR: `ethaddr' not set\n"); |
1746 | break; | |
6e592385 | 1747 | default: |
8bde7f77 | 1748 | printf ("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1749 | num); |
1750 | break; | |
6e592385 | 1751 | } |
2d966958 | 1752 | |
6e592385 WD |
1753 | NetStartAgain (); |
1754 | return (2); | |
2d966958 | 1755 | #else |
6e592385 WD |
1756 | puts ("*** ERROR: `ethaddr' not set\n"); |
1757 | return (1); | |
2d966958 | 1758 | #endif |
6e592385 WD |
1759 | } |
1760 | /* Fall through */ | |
1761 | default: | |
1762 | return (0); | |
2d966958 | 1763 | } |
6e592385 | 1764 | return (0); /* OK */ |
2d966958 WD |
1765 | } |
1766 | /**********************************************************************/ | |
1767 | ||
1768 | int | |
1769 | NetCksumOk(uchar * ptr, int len) | |
1770 | { | |
1771 | return !((NetCksum(ptr, len) + 1) & 0xfffe); | |
1772 | } | |
1773 | ||
1774 | ||
1775 | unsigned | |
1776 | NetCksum(uchar * ptr, int len) | |
1777 | { | |
1778 | ulong xsum; | |
9d2a873b | 1779 | ushort *p = (ushort *)ptr; |
2d966958 WD |
1780 | |
1781 | xsum = 0; | |
1782 | while (len-- > 0) | |
7bc5ee07 | 1783 | xsum += *p++; |
2d966958 WD |
1784 | xsum = (xsum & 0xffff) + (xsum >> 16); |
1785 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
1786 | return (xsum & 0xffff); | |
1787 | } | |
1788 | ||
a3d991bd WD |
1789 | int |
1790 | NetEthHdrSize(void) | |
1791 | { | |
1792 | ushort myvlanid; | |
2d966958 | 1793 | |
a3d991bd WD |
1794 | myvlanid = ntohs(NetOurVLAN); |
1795 | if (myvlanid == (ushort)-1) | |
1796 | myvlanid = VLAN_NONE; | |
1797 | ||
1798 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE; | |
1799 | } | |
1800 | ||
1801 | int | |
2d966958 WD |
1802 | NetSetEther(volatile uchar * xet, uchar * addr, uint prot) |
1803 | { | |
1804 | Ethernet_t *et = (Ethernet_t *)xet; | |
a3d991bd WD |
1805 | ushort myvlanid; |
1806 | ||
1807 | myvlanid = ntohs(NetOurVLAN); | |
1808 | if (myvlanid == (ushort)-1) | |
1809 | myvlanid = VLAN_NONE; | |
2d966958 WD |
1810 | |
1811 | memcpy (et->et_dest, addr, 6); | |
1812 | memcpy (et->et_src, NetOurEther, 6); | |
a3d991bd | 1813 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
2d966958 | 1814 | et->et_protlen = htons(prot); |
a3d991bd WD |
1815 | return ETHER_HDR_SIZE; |
1816 | } else { | |
1817 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet; | |
2d966958 | 1818 | |
a3d991bd WD |
1819 | vet->vet_vlan_type = htons(PROT_VLAN); |
1820 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1821 | vet->vet_type = htons(prot); | |
1822 | return VLAN_ETHER_HDR_SIZE; | |
1823 | } | |
1824 | } | |
2d966958 WD |
1825 | |
1826 | void | |
1827 | NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len) | |
1828 | { | |
af8626e0 | 1829 | IP_t *ip = (IP_t *)xip; |
2d966958 WD |
1830 | |
1831 | /* | |
1832 | * If the data is an odd number of bytes, zero the | |
1833 | * byte after the last byte so that the checksum | |
1834 | * will work. | |
1835 | */ | |
1836 | if (len & 1) | |
1837 | xip[IP_HDR_SIZE + len] = 0; | |
1838 | ||
1839 | /* | |
1840 | * Construct an IP and UDP header. | |
6e592385 | 1841 | * (need to set no fragment bit - XXX) |
2d966958 WD |
1842 | */ |
1843 | ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */ | |
1844 | ip->ip_tos = 0; | |
1845 | ip->ip_len = htons(IP_HDR_SIZE + len); | |
1846 | ip->ip_id = htons(NetIPID++); | |
e0c07b86 | 1847 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 WD |
1848 | ip->ip_ttl = 255; |
1849 | ip->ip_p = 17; /* UDP */ | |
1850 | ip->ip_sum = 0; | |
1851 | NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */ | |
1852 | NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */ | |
1853 | ip->udp_src = htons(sport); | |
1854 | ip->udp_dst = htons(dport); | |
1855 | ip->udp_len = htons(8 + len); | |
1856 | ip->udp_xsum = 0; | |
1857 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
1858 | } | |
1859 | ||
77ddac94 | 1860 | void copy_filename (char *dst, char *src, int size) |
2d966958 WD |
1861 | { |
1862 | if (*src && (*src == '"')) { | |
1863 | ++src; | |
1864 | --size; | |
1865 | } | |
1866 | ||
1867 | while ((--size > 0) && *src && (*src != '"')) { | |
1868 | *dst++ = *src++; | |
1869 | } | |
1870 | *dst = '\0'; | |
1871 | } | |
1872 | ||
1a32bf41 RG |
1873 | #if defined(CONFIG_CMD_NFS) || defined(CONFIG_CMD_SNTP) || defined(CONFIG_CMD_DNS) |
1874 | /* | |
1875 | * make port a little random, but use something trivial to compute | |
1876 | */ | |
1877 | unsigned int random_port(void) | |
1878 | { | |
1879 | return 1024 + (get_timer(0) % 0x8000);; | |
1880 | } | |
1881 | #endif | |
1882 | ||
2d966958 WD |
1883 | void ip_to_string (IPaddr_t x, char *s) |
1884 | { | |
a3d991bd WD |
1885 | x = ntohl (x); |
1886 | sprintf (s, "%d.%d.%d.%d", | |
1887 | (int) ((x >> 24) & 0xff), | |
1888 | (int) ((x >> 16) & 0xff), | |
1889 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
6e592385 | 1890 | ); |
2d966958 WD |
1891 | } |
1892 | ||
a3d991bd WD |
1893 | void VLAN_to_string(ushort x, char *s) |
1894 | { | |
1895 | x = ntohs(x); | |
1896 | ||
1897 | if (x == (ushort)-1) | |
1898 | x = VLAN_NONE; | |
1899 | ||
1900 | if (x == VLAN_NONE) | |
1901 | strcpy(s, "none"); | |
1902 | else | |
1903 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1904 | } | |
1905 | ||
1906 | ushort string_to_VLAN(char *s) | |
1907 | { | |
1908 | ushort id; | |
1909 | ||
1910 | if (s == NULL) | |
b9711de1 | 1911 | return htons(VLAN_NONE); |
a3d991bd WD |
1912 | |
1913 | if (*s < '0' || *s > '9') | |
1914 | id = VLAN_NONE; | |
1915 | else | |
1916 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1917 | ||
b9711de1 | 1918 | return htons(id); |
a3d991bd WD |
1919 | } |
1920 | ||
a3d991bd WD |
1921 | ushort getenv_VLAN(char *var) |
1922 | { | |
1923 | return (string_to_VLAN(getenv(var))); | |
1924 | } |