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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 | * | |
43 | * Prerequisites: - own ethernet address | |
44 | * We want: - IP, Netmask, ServerIP, Gateway IP | |
45 | * - bootfilename, lease time | |
46 | * Next step: - TFTP | |
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 | |
2d966958 WD |
67 | */ |
68 | ||
69 | ||
70 | #include <common.h> | |
71 | #include <watchdog.h> | |
72 | #include <command.h> | |
73 | #include <net.h> | |
74 | #include "bootp.h" | |
75 | #include "tftp.h" | |
76 | #include "rarp.h" | |
cbd8a35c | 77 | #include "nfs.h" |
fc3e2165 WD |
78 | #ifdef CONFIG_STATUS_LED |
79 | #include <status_led.h> | |
80 | #include <miiphy.h> | |
81 | #endif | |
2d966958 WD |
82 | |
83 | #if (CONFIG_COMMANDS & CFG_CMD_NET) | |
84 | ||
73a8b27c WD |
85 | #define ARP_TIMEOUT 5 /* Seconds before trying ARP again */ |
86 | #ifndef CONFIG_NET_RETRY_COUNT | |
87 | # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */ | |
88 | #else | |
89 | # define ARP_TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) | |
90 | #endif | |
91 | ||
2d966958 WD |
92 | #if 0 |
93 | #define ET_DEBUG | |
94 | #endif | |
95 | ||
96 | /** BOOTP EXTENTIONS **/ | |
97 | ||
98 | IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */ | |
99 | IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */ | |
100 | IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */ | |
fe389a82 SR |
101 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2) |
102 | IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */ | |
103 | #endif | |
2d966958 WD |
104 | char NetOurNISDomain[32]={0,}; /* Our NIS domain */ |
105 | char NetOurHostName[32]={0,}; /* Our hostname */ | |
106 | char NetOurRootPath[64]={0,}; /* Our bootpath */ | |
107 | ushort NetBootFileSize=0; /* Our bootfile size in blocks */ | |
108 | ||
109 | /** END OF BOOTP EXTENTIONS **/ | |
110 | ||
111 | ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */ | |
112 | uchar NetOurEther[6]; /* Our ethernet address */ | |
113 | uchar NetServerEther[6] = /* Boot server enet address */ | |
73a8b27c | 114 | { 0, 0, 0, 0, 0, 0 }; |
2d966958 WD |
115 | IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */ |
116 | IPaddr_t NetServerIP; /* Our IP addr (0 = unknown) */ | |
117 | volatile uchar *NetRxPkt; /* Current receive packet */ | |
118 | int NetRxPktLen; /* Current rx packet length */ | |
119 | unsigned NetIPID; /* IP packet ID */ | |
120 | uchar NetBcastAddr[6] = /* Ethernet bcast address */ | |
121 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; | |
73a8b27c WD |
122 | uchar NetEtherNullAddr[6] = |
123 | { 0, 0, 0, 0, 0, 0 }; | |
a3d991bd WD |
124 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) |
125 | uchar NetCDPAddr[6] = /* Ethernet bcast address */ | |
126 | { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc }; | |
127 | #endif | |
2d966958 WD |
128 | int NetState; /* Network loop state */ |
129 | #ifdef CONFIG_NET_MULTI | |
130 | int NetRestartWrap = 0; /* Tried all network devices */ | |
131 | static int NetRestarted = 0; /* Network loop restarted */ | |
132 | static int NetDevExists = 0; /* At least one device configured */ | |
133 | #endif | |
134 | ||
a3d991bd WD |
135 | ushort NetOurVLAN = ntohs(-1); /* default is without VLAN */ |
136 | ushort NetOurNativeVLAN = htons(-1); /* dido */ | |
137 | ||
2d966958 WD |
138 | char BootFile[128]; /* Boot File name */ |
139 | ||
73a8b27c WD |
140 | #if (CONFIG_COMMANDS & CFG_CMD_PING) |
141 | IPaddr_t NetPingIP; /* the ip address to ping */ | |
142 | ||
143 | static void PingStart(void); | |
144 | #endif | |
145 | ||
a3d991bd WD |
146 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) |
147 | static void CDPStart(void); | |
148 | #endif | |
149 | ||
2d966958 WD |
150 | volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
151 | ||
152 | volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */ | |
153 | ||
154 | static rxhand_f *packetHandler; /* Current RX packet handler */ | |
155 | static thand_f *timeHandler; /* Current timeout handler */ | |
e0ac62d7 WD |
156 | static ulong timeStart; /* Time base value */ |
157 | static ulong timeDelta; /* Current timeout value */ | |
2d966958 WD |
158 | volatile uchar *NetTxPacket = 0; /* THE transmit packet */ |
159 | ||
160 | static int net_check_prereq (proto_t protocol); | |
161 | ||
73a8b27c WD |
162 | /**********************************************************************/ |
163 | ||
164 | IPaddr_t NetArpWaitPacketIP; | |
165 | IPaddr_t NetArpWaitReplyIP; | |
166 | uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */ | |
167 | uchar *NetArpWaitTxPacket; /* THE transmit packet */ | |
168 | int NetArpWaitTxPacketSize; | |
169 | uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN]; | |
170 | ulong NetArpWaitTimerStart; | |
171 | int NetArpWaitTry; | |
172 | ||
173 | void ArpRequest(void) | |
174 | { | |
175 | int i; | |
176 | volatile uchar *pkt; | |
177 | ARP_t * arp; | |
178 | ||
179 | #ifdef ET_DEBUG | |
180 | printf("ARP broadcast %d\n", NetArpWaitTry); | |
181 | #endif | |
182 | pkt = NetTxPacket; | |
183 | ||
a3d991bd | 184 | pkt += NetSetEther(pkt, NetBcastAddr, PROT_ARP); |
73a8b27c WD |
185 | |
186 | arp = (ARP_t *)pkt; | |
187 | ||
188 | arp->ar_hrd = htons(ARP_ETHER); | |
189 | arp->ar_pro = htons(PROT_IP); | |
190 | arp->ar_hln = 6; | |
191 | arp->ar_pln = 4; | |
192 | arp->ar_op = htons(ARPOP_REQUEST); | |
193 | ||
194 | memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */ | |
195 | NetWriteIP((uchar*)&arp->ar_data[6], NetOurIP); /* source IP addr */ | |
196 | for (i=10; i<16; ++i) { | |
197 | arp->ar_data[i] = 0; /* dest ET addr = 0 */ | |
198 | } | |
199 | ||
200 | if((NetArpWaitPacketIP & NetOurSubnetMask) != (NetOurIP & NetOurSubnetMask)) { | |
201 | if (NetOurGatewayIP == 0) { | |
202 | puts ("## Warning: gatewayip needed but not set\n"); | |
203 | } | |
204 | NetArpWaitReplyIP = NetOurGatewayIP; | |
205 | } else | |
8bde7f77 | 206 | NetArpWaitReplyIP = NetArpWaitPacketIP; |
73a8b27c | 207 | |
8bde7f77 | 208 | NetWriteIP((uchar*)&arp->ar_data[16], NetArpWaitReplyIP); |
a3d991bd | 209 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE); |
73a8b27c WD |
210 | } |
211 | ||
212 | void ArpTimeoutCheck(void) | |
213 | { | |
214 | ulong t; | |
215 | ||
216 | if (!NetArpWaitPacketIP) | |
217 | return; | |
218 | ||
219 | t = get_timer(0); | |
220 | ||
221 | /* check for arp timeout */ | |
222 | if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT * CFG_HZ) { | |
223 | NetArpWaitTry++; | |
224 | ||
225 | if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) { | |
226 | puts ("\nARP Retry count exceeded; starting again\n"); | |
227 | NetArpWaitTry = 0; | |
228 | NetStartAgain(); | |
229 | } else { | |
230 | NetArpWaitTimerStart = t; | |
231 | ArpRequest(); | |
232 | } | |
233 | } | |
234 | } | |
235 | ||
2d966958 WD |
236 | /**********************************************************************/ |
237 | /* | |
238 | * Main network processing loop. | |
239 | */ | |
240 | ||
241 | int | |
242 | NetLoop(proto_t protocol) | |
243 | { | |
244 | DECLARE_GLOBAL_DATA_PTR; | |
245 | ||
246 | bd_t *bd = gd->bd; | |
247 | ||
248 | #ifdef CONFIG_NET_MULTI | |
249 | NetRestarted = 0; | |
250 | NetDevExists = 0; | |
251 | #endif | |
252 | ||
73a8b27c WD |
253 | /* XXX problem with bss workaround */ |
254 | NetArpWaitPacketMAC = NULL; | |
255 | NetArpWaitTxPacket = NULL; | |
256 | NetArpWaitPacketIP = 0; | |
257 | NetArpWaitReplyIP = 0; | |
258 | NetArpWaitTxPacket = NULL; | |
259 | NetTxPacket = NULL; | |
260 | ||
2d966958 WD |
261 | if (!NetTxPacket) { |
262 | int i; | |
263 | ||
264 | /* | |
265 | * Setup packet buffers, aligned correctly. | |
266 | */ | |
267 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
268 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
269 | for (i = 0; i < PKTBUFSRX; i++) { | |
270 | NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN; | |
271 | } | |
73a8b27c WD |
272 | |
273 | } | |
274 | ||
275 | if (!NetArpWaitTxPacket) { | |
276 | NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1); | |
277 | NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN; | |
278 | NetArpWaitTxPacketSize = 0; | |
2d966958 WD |
279 | } |
280 | ||
281 | eth_halt(); | |
a3d991bd | 282 | eth_set_current(); |
0b97ab14 WD |
283 | if(eth_init(bd) < 0) |
284 | return(-1); | |
2d966958 WD |
285 | |
286 | restart: | |
287 | #ifdef CONFIG_NET_MULTI | |
288 | memcpy (NetOurEther, eth_get_dev()->enetaddr, 6); | |
289 | #else | |
290 | memcpy (NetOurEther, bd->bi_enetaddr, 6); | |
291 | #endif | |
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 | */ | |
300 | ||
301 | switch (protocol) { | |
cbd8a35c WD |
302 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) |
303 | case NFS: | |
304 | #endif | |
73a8b27c WD |
305 | #if (CONFIG_COMMANDS & CFG_CMD_PING) |
306 | case PING: | |
307 | #endif | |
2d966958 WD |
308 | case TFTP: |
309 | NetCopyIP(&NetOurIP, &bd->bi_ip_addr); | |
2d966958 WD |
310 | NetOurGatewayIP = getenv_IPaddr ("gatewayip"); |
311 | NetOurSubnetMask= getenv_IPaddr ("netmask"); | |
a3d991bd WD |
312 | NetOurVLAN = getenv_VLAN("vlan"); |
313 | NetOurNativeVLAN = getenv_VLAN("nvlan"); | |
73a8b27c WD |
314 | |
315 | switch (protocol) { | |
cbd8a35c WD |
316 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) |
317 | case NFS: | |
318 | #endif | |
73a8b27c WD |
319 | case TFTP: |
320 | NetServerIP = getenv_IPaddr ("serverip"); | |
321 | break; | |
322 | #if (CONFIG_COMMANDS & CFG_CMD_PING) | |
323 | case PING: | |
324 | /* nothing */ | |
325 | break; | |
326 | #endif | |
327 | default: | |
328 | break; | |
329 | } | |
330 | ||
2d966958 WD |
331 | break; |
332 | case BOOTP: | |
333 | case RARP: | |
334 | /* | |
8bde7f77 WD |
335 | * initialize our IP addr to 0 in order to accept ANY |
336 | * IP addr assigned to us by the BOOTP / RARP server | |
2d966958 WD |
337 | */ |
338 | NetOurIP = 0; | |
3d3befa7 | 339 | NetServerIP = getenv_IPaddr ("serverip"); |
a3d991bd WD |
340 | NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */ |
341 | NetOurNativeVLAN = getenv_VLAN("nvlan"); | |
342 | case CDP: | |
343 | NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */ | |
344 | NetOurNativeVLAN = getenv_VLAN("nvlan"); | |
2d966958 WD |
345 | break; |
346 | default: | |
347 | break; | |
348 | } | |
349 | ||
350 | switch (net_check_prereq (protocol)) { | |
351 | case 1: | |
352 | /* network not configured */ | |
1d0350ed | 353 | return (-1); |
2d966958 WD |
354 | |
355 | #ifdef CONFIG_NET_MULTI | |
356 | case 2: | |
357 | /* network device not configured */ | |
358 | break; | |
359 | #endif /* CONFIG_NET_MULTI */ | |
360 | ||
361 | case 0: | |
362 | #ifdef CONFIG_NET_MULTI | |
363 | NetDevExists = 1; | |
364 | #endif | |
365 | switch (protocol) { | |
366 | case TFTP: | |
367 | /* always use ARP to get server ethernet address */ | |
73a8b27c | 368 | TftpStart(); |
2d966958 WD |
369 | break; |
370 | ||
371 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
372 | case DHCP: | |
373 | /* Start with a clean slate... */ | |
374 | NetOurIP = 0; | |
3d3befa7 | 375 | NetServerIP = getenv_IPaddr ("serverip"); |
2d966958 WD |
376 | DhcpRequest(); /* Basically same as BOOTP */ |
377 | break; | |
378 | #endif /* CFG_CMD_DHCP */ | |
379 | ||
380 | case BOOTP: | |
381 | BootpTry = 0; | |
382 | BootpRequest (); | |
383 | break; | |
384 | ||
385 | case RARP: | |
386 | RarpTry = 0; | |
387 | RarpRequest (); | |
388 | break; | |
73a8b27c WD |
389 | #if (CONFIG_COMMANDS & CFG_CMD_PING) |
390 | case PING: | |
391 | PingStart(); | |
392 | break; | |
cbd8a35c WD |
393 | #endif |
394 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) | |
395 | case NFS: | |
396 | NfsStart(); | |
397 | break; | |
a3d991bd WD |
398 | #endif |
399 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) | |
400 | case CDP: | |
401 | CDPStart(); | |
402 | break; | |
73a8b27c | 403 | #endif |
2d966958 WD |
404 | default: |
405 | break; | |
406 | } | |
407 | ||
408 | NetBootFileXferSize = 0; | |
409 | break; | |
410 | } | |
411 | ||
fc3e2165 WD |
412 | #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII) |
413 | #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED) | |
414 | /* | |
42d1f039 | 415 | * Echo the inverted link state to the fault LED. |
fc3e2165 WD |
416 | */ |
417 | if(miiphy_link(CFG_FAULT_MII_ADDR)) { | |
418 | status_led_set (STATUS_LED_RED, STATUS_LED_OFF); | |
419 | } else { | |
420 | status_led_set (STATUS_LED_RED, STATUS_LED_ON); | |
421 | } | |
422 | #endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */ | |
423 | #endif /* CONFIG_MII, ... */ | |
2d966958 WD |
424 | |
425 | /* | |
426 | * Main packet reception loop. Loop receiving packets until | |
427 | * someone sets `NetQuit'. | |
428 | */ | |
429 | for (;;) { | |
430 | WATCHDOG_RESET(); | |
431 | #ifdef CONFIG_SHOW_ACTIVITY | |
432 | { | |
433 | extern void show_activity(int arg); | |
434 | show_activity(1); | |
435 | } | |
436 | #endif | |
437 | /* | |
438 | * Check the ethernet for a new packet. The ethernet | |
439 | * receive routine will process it. | |
440 | */ | |
441 | eth_rx(); | |
442 | ||
443 | /* | |
444 | * Abort if ctrl-c was pressed. | |
445 | */ | |
446 | if (ctrlc()) { | |
8bde7f77 | 447 | eth_halt(); |
4b9206ed | 448 | puts ("\nAbort\n"); |
1d0350ed | 449 | return (-1); |
2d966958 WD |
450 | } |
451 | ||
73a8b27c | 452 | ArpTimeoutCheck(); |
2d966958 WD |
453 | |
454 | /* | |
455 | * Check for a timeout, and run the timeout handler | |
456 | * if we have one. | |
457 | */ | |
e0ac62d7 | 458 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
459 | thand_f *x; |
460 | ||
fc3e2165 WD |
461 | #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII) |
462 | #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED) | |
463 | /* | |
42d1f039 | 464 | * Echo the inverted link state to the fault LED. |
fc3e2165 WD |
465 | */ |
466 | if(miiphy_link(CFG_FAULT_MII_ADDR)) { | |
467 | status_led_set (STATUS_LED_RED, STATUS_LED_OFF); | |
468 | } else { | |
469 | status_led_set (STATUS_LED_RED, STATUS_LED_ON); | |
470 | } | |
471 | #endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */ | |
472 | #endif /* CONFIG_MII, ... */ | |
2d966958 WD |
473 | x = timeHandler; |
474 | timeHandler = (thand_f *)0; | |
475 | (*x)(); | |
476 | } | |
477 | ||
478 | ||
479 | switch (NetState) { | |
480 | ||
481 | case NETLOOP_RESTART: | |
482 | #ifdef CONFIG_NET_MULTI | |
483 | NetRestarted = 1; | |
484 | #endif | |
485 | goto restart; | |
486 | ||
487 | case NETLOOP_SUCCESS: | |
488 | if (NetBootFileXferSize > 0) { | |
489 | char buf[10]; | |
490 | printf("Bytes transferred = %ld (%lx hex)\n", | |
491 | NetBootFileXferSize, | |
492 | NetBootFileXferSize); | |
493 | sprintf(buf, "%lx", NetBootFileXferSize); | |
494 | setenv("filesize", buf); | |
a3d991bd WD |
495 | |
496 | sprintf(buf, "%lX", (unsigned long)load_addr); | |
497 | setenv("fileaddr", buf); | |
2d966958 WD |
498 | } |
499 | eth_halt(); | |
500 | return NetBootFileXferSize; | |
501 | ||
502 | case NETLOOP_FAIL: | |
1d0350ed | 503 | return (-1); |
2d966958 WD |
504 | } |
505 | } | |
506 | } | |
507 | ||
508 | /**********************************************************************/ | |
509 | ||
510 | static void | |
511 | startAgainTimeout(void) | |
512 | { | |
513 | NetState = NETLOOP_RESTART; | |
514 | } | |
515 | ||
516 | static void | |
517 | startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
518 | { | |
519 | /* Totally ignore the packet */ | |
520 | } | |
521 | ||
522 | void | |
523 | NetStartAgain(void) | |
524 | { | |
a3d991bd WD |
525 | DECLARE_GLOBAL_DATA_PTR; |
526 | char *s; | |
527 | ||
528 | if ((s = getenv("netretry")) != NULL && *s == 'n') { | |
529 | eth_halt(); | |
530 | NetState = NETLOOP_FAIL; | |
531 | return; | |
532 | } | |
533 | ||
2d966958 WD |
534 | #ifndef CONFIG_NET_MULTI |
535 | NetSetTimeout(10 * CFG_HZ, startAgainTimeout); | |
536 | NetSetHandler(startAgainHandler); | |
537 | #else | |
2d966958 WD |
538 | eth_halt(); |
539 | eth_try_another(!NetRestarted); | |
540 | eth_init(gd->bd); | |
541 | if (NetRestartWrap) | |
542 | { | |
543 | NetRestartWrap = 0; | |
544 | if (NetDevExists) | |
545 | { | |
546 | NetSetTimeout(10 * CFG_HZ, startAgainTimeout); | |
547 | NetSetHandler(startAgainHandler); | |
548 | } | |
549 | else | |
550 | { | |
551 | NetState = NETLOOP_FAIL; | |
552 | } | |
553 | } | |
554 | else | |
555 | { | |
556 | NetState = NETLOOP_RESTART; | |
557 | } | |
558 | #endif | |
559 | } | |
560 | ||
561 | /**********************************************************************/ | |
562 | /* | |
563 | * Miscelaneous bits. | |
564 | */ | |
565 | ||
566 | void | |
567 | NetSetHandler(rxhand_f * f) | |
568 | { | |
569 | packetHandler = f; | |
570 | } | |
571 | ||
572 | ||
573 | void | |
574 | NetSetTimeout(int iv, thand_f * f) | |
575 | { | |
576 | if (iv == 0) { | |
577 | timeHandler = (thand_f *)0; | |
578 | } else { | |
579 | timeHandler = f; | |
e0ac62d7 WD |
580 | timeStart = get_timer(0); |
581 | timeDelta = iv; | |
2d966958 WD |
582 | } |
583 | } | |
584 | ||
585 | ||
586 | void | |
587 | NetSendPacket(volatile uchar * pkt, int len) | |
588 | { | |
589 | (void) eth_send(pkt, len); | |
590 | } | |
591 | ||
73a8b27c WD |
592 | int |
593 | NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len) | |
594 | { | |
a3d991bd WD |
595 | uchar *pkt; |
596 | ||
73a8b27c WD |
597 | /* convert to new style broadcast */ |
598 | if (dest == 0) | |
599 | dest = 0xFFFFFFFF; | |
600 | ||
601 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
602 | if (dest == 0xFFFFFFFF) | |
603 | ether = NetBcastAddr; | |
604 | ||
605 | /* if MAC address was not discovered yet, save the packet and do an ARP request */ | |
606 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { | |
607 | ||
608 | #ifdef ET_DEBUG | |
609 | printf("sending ARP for %08lx\n", dest); | |
610 | #endif | |
73a8b27c WD |
611 | NetArpWaitPacketIP = dest; |
612 | NetArpWaitPacketMAC = ether; | |
a3d991bd WD |
613 | |
614 | pkt = NetArpWaitTxPacket; | |
615 | pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP); | |
616 | ||
617 | NetSetIP (pkt, dest, dport, sport, len); | |
618 | memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len); | |
73a8b27c WD |
619 | |
620 | /* size of the waiting packet */ | |
a3d991bd | 621 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len; |
73a8b27c WD |
622 | |
623 | /* and do the ARP request */ | |
624 | NetArpWaitTry = 1; | |
625 | NetArpWaitTimerStart = get_timer(0); | |
626 | ArpRequest(); | |
627 | return 1; /* waiting */ | |
628 | } | |
629 | ||
630 | #ifdef ET_DEBUG | |
631 | printf("sending UDP to %08lx/%02x:%02x:%02x:%02x:%02x:%02x\n", | |
632 | dest, ether[0], ether[1], ether[2], ether[3], ether[4], ether[5]); | |
633 | #endif | |
634 | ||
a3d991bd WD |
635 | pkt = (uchar *)NetTxPacket; |
636 | pkt += NetSetEther (pkt, ether, PROT_IP); | |
637 | NetSetIP (pkt, dest, dport, sport, len); | |
638 | (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len); | |
73a8b27c WD |
639 | |
640 | return 0; /* transmited */ | |
641 | } | |
642 | ||
643 | #if (CONFIG_COMMANDS & CFG_CMD_PING) | |
644 | static ushort PingSeqNo; | |
645 | ||
646 | int PingSend(void) | |
647 | { | |
648 | static uchar mac[6]; | |
649 | volatile IP_t *ip; | |
650 | volatile ushort *s; | |
a3d991bd | 651 | uchar *pkt; |
73a8b27c WD |
652 | |
653 | /* XXX always send arp request */ | |
654 | ||
655 | memcpy(mac, NetEtherNullAddr, 6); | |
656 | ||
657 | #ifdef ET_DEBUG | |
658 | printf("sending ARP for %08lx\n", NetPingIP); | |
659 | #endif | |
660 | ||
661 | NetArpWaitPacketIP = NetPingIP; | |
662 | NetArpWaitPacketMAC = mac; | |
663 | ||
a3d991bd WD |
664 | pkt = NetArpWaitTxPacket; |
665 | pkt += NetSetEther(pkt, mac, PROT_IP); | |
73a8b27c | 666 | |
a3d991bd | 667 | ip = (volatile IP_t *)pkt; |
73a8b27c WD |
668 | |
669 | /* | |
670 | * Construct an IP and ICMP header. (need to set no fragment bit - XXX) | |
671 | */ | |
672 | ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */ | |
673 | ip->ip_tos = 0; | |
674 | ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8); | |
675 | ip->ip_id = htons(NetIPID++); | |
676 | ip->ip_off = htons(0x4000); /* No fragmentation */ | |
677 | ip->ip_ttl = 255; | |
678 | ip->ip_p = 0x01; /* ICMP */ | |
679 | ip->ip_sum = 0; | |
680 | NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */ | |
681 | NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */ | |
682 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
683 | ||
684 | s = &ip->udp_src; /* XXX ICMP starts here */ | |
685 | s[0] = htons(0x0800); /* echo-request, code */ | |
686 | s[1] = 0; /* checksum */ | |
687 | s[2] = 0; /* identifier */ | |
688 | s[3] = htons(PingSeqNo++); /* sequence number */ | |
689 | s[1] = ~NetCksum((uchar *)s, 8/2); | |
690 | ||
691 | /* size of the waiting packet */ | |
a3d991bd | 692 | NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8; |
73a8b27c WD |
693 | |
694 | /* and do the ARP request */ | |
695 | NetArpWaitTry = 1; | |
696 | NetArpWaitTimerStart = get_timer(0); | |
697 | ArpRequest(); | |
698 | return 1; /* waiting */ | |
699 | } | |
700 | ||
701 | static void | |
702 | PingTimeout (void) | |
703 | { | |
704 | eth_halt(); | |
705 | NetState = NETLOOP_FAIL; /* we did not get the reply */ | |
706 | } | |
2d966958 | 707 | |
73a8b27c WD |
708 | static void |
709 | PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
710 | { | |
711 | IPaddr_t tmp; | |
712 | volatile IP_t *ip = (volatile IP_t *)pkt; | |
713 | ||
714 | tmp = NetReadIP((void *)&ip->ip_src); | |
715 | if (tmp != NetPingIP) | |
716 | return; | |
717 | ||
718 | NetState = NETLOOP_SUCCESS; | |
719 | } | |
720 | ||
721 | static void PingStart(void) | |
722 | { | |
a3d991bd WD |
723 | #if defined(CONFIG_NET_MULTI) |
724 | printf ("Using %s device\n", eth_get_name()); | |
725 | #endif | |
73a8b27c WD |
726 | NetSetTimeout (10 * CFG_HZ, PingTimeout); |
727 | NetSetHandler (PingHandler); | |
728 | ||
729 | PingSend(); | |
730 | } | |
731 | ||
732 | #endif | |
2d966958 | 733 | |
a3d991bd WD |
734 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) |
735 | ||
736 | #define CDP_DEVICE_ID_TLV 0x0001 | |
737 | #define CDP_ADDRESS_TLV 0x0002 | |
738 | #define CDP_PORT_ID_TLV 0x0003 | |
739 | #define CDP_CAPABILITIES_TLV 0x0004 | |
740 | #define CDP_VERSION_TLV 0x0005 | |
741 | #define CDP_PLATFORM_TLV 0x0006 | |
742 | #define CDP_NATIVE_VLAN_TLV 0x000a | |
743 | #define CDP_APPLIANCE_VLAN_TLV 0x000e | |
744 | #define CDP_TRIGGER_TLV 0x000f | |
745 | #define CDP_POWER_CONSUMPTION_TLV 0x0010 | |
746 | #define CDP_SYSNAME_TLV 0x0014 | |
747 | #define CDP_SYSOBJECT_TLV 0x0015 | |
748 | #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016 | |
749 | ||
750 | #define CDP_TIMEOUT (CFG_HZ/4) /* one packet every 250ms */ | |
751 | ||
752 | static int CDPSeq; | |
753 | static int CDPOK; | |
754 | ||
755 | ushort CDPNativeVLAN; | |
756 | ushort CDPApplianceVLAN; | |
757 | ||
758 | static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 }; | |
759 | ||
760 | static ushort CDP_compute_csum(const uchar *buff, ushort len) | |
761 | { | |
762 | ushort csum; | |
763 | int odd; | |
764 | ulong result = 0; | |
765 | ushort leftover; | |
766 | ||
767 | if (len > 0) { | |
768 | odd = 1 & (ulong)buff; | |
769 | if (odd) { | |
770 | result = *buff << 8; | |
771 | len--; | |
772 | buff++; | |
773 | } | |
774 | while (len > 1) { | |
775 | result += *((const ushort *)buff)++; | |
776 | if (result & 0x80000000) | |
777 | result = (result & 0xFFFF) + (result >> 16); | |
778 | len -= 2; | |
779 | } | |
780 | if (len) { | |
781 | leftover = (signed short)(*(const signed char *)buff); | |
782 | /* * XXX CISCO SUCKS big time! (and blows too) */ | |
783 | result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff); | |
784 | } | |
785 | while (result >> 16) | |
786 | result = (result & 0xFFFF) + (result >> 16); | |
787 | ||
788 | if (odd) | |
789 | result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); | |
790 | } | |
791 | ||
792 | /* add up 16-bit and 17-bit words for 17+c bits */ | |
793 | result = (result & 0xffff) + (result >> 16); | |
794 | /* add up 16-bit and 2-bit for 16+c bit */ | |
795 | result = (result & 0xffff) + (result >> 16); | |
796 | /* add up carry.. */ | |
797 | result = (result & 0xffff) + (result >> 16); | |
798 | ||
799 | /* negate */ | |
800 | csum = ~(ushort)result; | |
801 | ||
802 | /* run time endian detection */ | |
803 | if (csum != htons(csum)) /* little endian */ | |
804 | csum = htons(csum); | |
805 | ||
806 | return csum; | |
807 | } | |
808 | ||
809 | int CDPSendTrigger(void) | |
810 | { | |
811 | volatile uchar *pkt; | |
812 | volatile ushort *s; | |
813 | volatile ushort *cp; | |
814 | Ethernet_t *et; | |
815 | char buf[32]; | |
816 | int len; | |
817 | ushort chksum; | |
818 | ||
819 | pkt = NetTxPacket; | |
820 | et = (Ethernet_t *)pkt; | |
821 | ||
822 | /* NOTE: trigger sent not on any VLAN */ | |
823 | ||
824 | /* form ethernet header */ | |
825 | memcpy(et->et_dest, NetCDPAddr, 6); | |
826 | memcpy(et->et_src, NetOurEther, 6); | |
827 | ||
828 | pkt += ETHER_HDR_SIZE; | |
829 | ||
830 | /* SNAP header */ | |
831 | memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)); | |
832 | pkt += sizeof(CDP_SNAP_hdr); | |
833 | ||
834 | /* CDP header */ | |
835 | *pkt++ = 0x02; /* CDP version 2 */ | |
836 | *pkt++ = 180; /* TTL */ | |
837 | s = (volatile ushort *)pkt; | |
838 | cp = s; | |
839 | *s++ = htons(0); /* checksum (0 for later calculation) */ | |
840 | ||
841 | /* CDP fields */ | |
842 | #ifdef CONFIG_CDP_DEVICE_ID | |
843 | *s++ = htons(CDP_DEVICE_ID_TLV); | |
844 | *s++ = htons(CONFIG_CDP_DEVICE_ID); | |
845 | memset(buf, 0, sizeof(buf)); | |
846 | sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X", | |
847 | NetOurEther[0] & 0xff, NetOurEther[1] & 0xff, | |
848 | NetOurEther[2] & 0xff, NetOurEther[3] & 0xff, | |
849 | NetOurEther[4] & 0xff, NetOurEther[5] & 0xff); | |
850 | memcpy((uchar *)s, buf, 16); | |
851 | s += 16 / 2; | |
852 | #endif | |
853 | ||
854 | #ifdef CONFIG_CDP_PORT_ID | |
855 | *s++ = htons(CDP_PORT_ID_TLV); | |
856 | memset(buf, 0, sizeof(buf)); | |
857 | sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index()); | |
858 | len = strlen(buf); | |
859 | if (len & 1) /* make it even */ | |
860 | len++; | |
861 | *s++ = htons(len + 4); | |
862 | memcpy((uchar *)s, buf, len); | |
863 | s += len / 2; | |
864 | #endif | |
865 | ||
866 | #ifdef CONFIG_CDP_CAPABILITIES | |
867 | *s++ = htons(CDP_CAPABILITIES_TLV); | |
868 | *s++ = htons(8); | |
869 | *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES); | |
870 | s += 2; | |
871 | #endif | |
872 | ||
873 | #ifdef CONFIG_CDP_VERSION | |
874 | *s++ = htons(CDP_VERSION_TLV); | |
875 | memset(buf, 0, sizeof(buf)); | |
876 | strcpy(buf, CONFIG_CDP_VERSION); | |
877 | len = strlen(buf); | |
878 | if (len & 1) /* make it even */ | |
879 | len++; | |
880 | *s++ = htons(len + 4); | |
881 | memcpy((uchar *)s, buf, len); | |
882 | s += len / 2; | |
883 | #endif | |
884 | ||
885 | #ifdef CONFIG_CDP_PLATFORM | |
886 | *s++ = htons(CDP_PLATFORM_TLV); | |
887 | memset(buf, 0, sizeof(buf)); | |
888 | strcpy(buf, CONFIG_CDP_PLATFORM); | |
889 | len = strlen(buf); | |
890 | if (len & 1) /* make it even */ | |
891 | len++; | |
892 | *s++ = htons(len + 4); | |
893 | memcpy((uchar *)s, buf, len); | |
894 | s += len / 2; | |
895 | #endif | |
896 | ||
897 | #ifdef CONFIG_CDP_TRIGGER | |
898 | *s++ = htons(CDP_TRIGGER_TLV); | |
899 | *s++ = htons(8); | |
900 | *(ulong *)s = htonl(CONFIG_CDP_TRIGGER); | |
901 | s += 2; | |
902 | #endif | |
903 | ||
904 | #ifdef CONFIG_CDP_POWER_CONSUMPTION | |
905 | *s++ = htons(CDP_POWER_CONSUMPTION_TLV); | |
906 | *s++ = htons(6); | |
907 | *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION); | |
908 | #endif | |
909 | ||
910 | /* length of ethernet packet */ | |
911 | len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE); | |
912 | et->et_protlen = htons(len); | |
913 | ||
914 | len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr); | |
915 | chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len)); | |
916 | if (chksum == 0) | |
917 | chksum = 0xFFFF; | |
918 | *cp = htons(chksum); | |
919 | ||
920 | (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket); | |
921 | return 0; | |
922 | } | |
923 | ||
924 | static void | |
925 | CDPTimeout (void) | |
926 | { | |
927 | CDPSeq++; | |
928 | ||
929 | if (CDPSeq < 3) { | |
930 | NetSetTimeout (CDP_TIMEOUT, CDPTimeout); | |
931 | CDPSendTrigger(); | |
932 | return; | |
933 | } | |
934 | ||
935 | /* if not OK try again */ | |
936 | if (!CDPOK) | |
937 | NetStartAgain(); | |
938 | else | |
939 | NetState = NETLOOP_SUCCESS; | |
940 | } | |
941 | ||
942 | static void | |
943 | CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
944 | { | |
945 | /* nothing */ | |
946 | } | |
947 | ||
948 | static void | |
949 | CDPHandler(const uchar * pkt, unsigned len) | |
950 | { | |
951 | const uchar *t; | |
952 | const ushort *ss; | |
953 | ushort type, tlen; | |
954 | uchar applid; | |
955 | ushort vlan, nvlan; | |
956 | ||
957 | /* minimum size? */ | |
958 | if (len < sizeof(CDP_SNAP_hdr) + 4) | |
959 | goto pkt_short; | |
960 | ||
961 | /* check for valid CDP SNAP header */ | |
962 | if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0) | |
963 | return; | |
964 | ||
965 | pkt += sizeof(CDP_SNAP_hdr); | |
966 | len -= sizeof(CDP_SNAP_hdr); | |
967 | ||
968 | /* Version of CDP protocol must be >= 2 and TTL != 0 */ | |
969 | if (pkt[0] < 0x02 || pkt[1] == 0) | |
970 | return; | |
971 | ||
972 | /* if version is greater than 0x02 maybe we'll have a problem; output a warning */ | |
973 | if (pkt[0] != 0x02) | |
974 | printf("** WARNING: CDP packet received with a protocol version %d > 2\n", | |
975 | pkt[0] & 0xff); | |
976 | ||
977 | if (CDP_compute_csum(pkt, len) != 0) | |
978 | return; | |
979 | ||
980 | pkt += 4; | |
981 | len -= 4; | |
982 | ||
983 | vlan = htons(-1); | |
984 | nvlan = htons(-1); | |
985 | while (len > 0) { | |
986 | if (len < 4) | |
987 | goto pkt_short; | |
988 | ||
989 | ss = (const ushort *)pkt; | |
990 | type = ntohs(ss[0]); | |
991 | tlen = ntohs(ss[1]); | |
992 | if (tlen > len) { | |
993 | goto pkt_short; | |
994 | } | |
995 | ||
996 | pkt += tlen; | |
997 | len -= tlen; | |
998 | ||
999 | ss += 2; /* point ss to the data of the TLV */ | |
1000 | tlen -= 4; | |
1001 | ||
1002 | switch (type) { | |
1003 | case CDP_DEVICE_ID_TLV: | |
1004 | break; | |
1005 | case CDP_ADDRESS_TLV: | |
1006 | break; | |
1007 | case CDP_PORT_ID_TLV: | |
1008 | break; | |
1009 | case CDP_CAPABILITIES_TLV: | |
1010 | break; | |
1011 | case CDP_VERSION_TLV: | |
1012 | break; | |
1013 | case CDP_PLATFORM_TLV: | |
1014 | break; | |
1015 | case CDP_NATIVE_VLAN_TLV: | |
1016 | nvlan = *ss; | |
1017 | break; | |
1018 | case CDP_APPLIANCE_VLAN_TLV: | |
1019 | t = (const uchar *)ss; | |
1020 | while (tlen > 0) { | |
1021 | if (tlen < 3) | |
1022 | goto pkt_short; | |
1023 | ||
1024 | applid = t[0]; | |
1025 | ss = (const ushort *)(t + 1); | |
1026 | ||
1027 | #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE | |
1028 | if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE) | |
1029 | vlan = *ss; | |
1030 | #else | |
1031 | vlan = ntohs(*ss); /* XXX will this work; dunno */ | |
1032 | #endif | |
1033 | t += 3; tlen -= 3; | |
1034 | } | |
1035 | break; | |
1036 | case CDP_TRIGGER_TLV: | |
1037 | break; | |
1038 | case CDP_POWER_CONSUMPTION_TLV: | |
1039 | break; | |
1040 | case CDP_SYSNAME_TLV: | |
1041 | break; | |
1042 | case CDP_SYSOBJECT_TLV: | |
1043 | break; | |
1044 | case CDP_MANAGEMENT_ADDRESS_TLV: | |
1045 | break; | |
1046 | } | |
1047 | } | |
1048 | ||
1049 | CDPApplianceVLAN = vlan; | |
1050 | CDPNativeVLAN = nvlan; | |
1051 | ||
1052 | CDPOK = 1; | |
1053 | return; | |
1054 | ||
1055 | pkt_short: | |
1056 | printf("** CDP packet is too short\n"); | |
1057 | return; | |
1058 | } | |
1059 | ||
1060 | static void CDPStart(void) | |
1061 | { | |
1062 | #if defined(CONFIG_NET_MULTI) | |
1063 | printf ("Using %s device\n", eth_get_name()); | |
1064 | #endif | |
1065 | CDPSeq = 0; | |
1066 | CDPOK = 0; | |
1067 | ||
1068 | CDPNativeVLAN = htons(-1); | |
1069 | CDPApplianceVLAN = htons(-1); | |
1070 | ||
1071 | NetSetTimeout (CDP_TIMEOUT, CDPTimeout); | |
1072 | NetSetHandler (CDPDummyHandler); | |
1073 | ||
1074 | CDPSendTrigger(); | |
1075 | } | |
1076 | ||
1077 | #endif | |
1078 | ||
1079 | ||
2d966958 | 1080 | void |
a3d991bd | 1081 | NetReceive(volatile uchar * inpkt, int len) |
2d966958 WD |
1082 | { |
1083 | Ethernet_t *et; | |
1084 | IP_t *ip; | |
1085 | ARP_t *arp; | |
1086 | IPaddr_t tmp; | |
1087 | int x; | |
a3d991bd WD |
1088 | uchar *pkt; |
1089 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) | |
1090 | int iscdp; | |
1091 | #endif | |
1092 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1093 | ||
1094 | #ifdef ET_DEBUG | |
1095 | printf("packet received\n"); | |
1096 | #endif | |
2d966958 | 1097 | |
a3d991bd | 1098 | NetRxPkt = inpkt; |
2d966958 | 1099 | NetRxPktLen = len; |
a3d991bd WD |
1100 | et = (Ethernet_t *)inpkt; |
1101 | ||
1102 | /* too small packet? */ | |
1103 | if (len < ETHER_HDR_SIZE) | |
1104 | return; | |
1105 | ||
1106 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) | |
1107 | /* keep track if packet is CDP */ | |
1108 | iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0; | |
1109 | #endif | |
1110 | ||
1111 | myvlanid = ntohs(NetOurVLAN); | |
1112 | if (myvlanid == (ushort)-1) | |
1113 | myvlanid = VLAN_NONE; | |
1114 | mynvlanid = ntohs(NetOurNativeVLAN); | |
1115 | if (mynvlanid == (ushort)-1) | |
1116 | mynvlanid = VLAN_NONE; | |
2d966958 WD |
1117 | |
1118 | x = ntohs(et->et_protlen); | |
1119 | ||
a3d991bd WD |
1120 | #ifdef ET_DEBUG |
1121 | printf("packet received\n"); | |
1122 | #endif | |
1123 | ||
2d966958 WD |
1124 | if (x < 1514) { |
1125 | /* | |
1126 | * Got a 802 packet. Check the other protocol field. | |
1127 | */ | |
1128 | x = ntohs(et->et_prot); | |
a3d991bd WD |
1129 | |
1130 | ip = (IP_t *)(inpkt + E802_HDR_SIZE); | |
2d966958 | 1131 | len -= E802_HDR_SIZE; |
a3d991bd WD |
1132 | |
1133 | } else if (x != PROT_VLAN) { /* normal packet */ | |
1134 | ip = (IP_t *)(inpkt + ETHER_HDR_SIZE); | |
2d966958 | 1135 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1136 | |
1137 | } else { /* VLAN packet */ | |
1138 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et; | |
1139 | ||
1140 | #ifdef ET_DEBUG | |
1141 | printf("VLAN packet received\n"); | |
1142 | #endif | |
1143 | /* too small packet? */ | |
1144 | if (len < VLAN_ETHER_HDR_SIZE) | |
1145 | return; | |
1146 | ||
1147 | /* if no VLAN active */ | |
1148 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
1149 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) | |
1150 | && iscdp == 0 | |
1151 | #endif | |
1152 | ) | |
1153 | return; | |
1154 | ||
1155 | cti = ntohs(vet->vet_tag); | |
1156 | vlanid = cti & VLAN_IDMASK; | |
1157 | x = ntohs(vet->vet_type); | |
1158 | ||
1159 | ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE); | |
1160 | len -= VLAN_ETHER_HDR_SIZE; | |
2d966958 WD |
1161 | } |
1162 | ||
1163 | #ifdef ET_DEBUG | |
1164 | printf("Receive from protocol 0x%x\n", x); | |
1165 | #endif | |
1166 | ||
a3d991bd WD |
1167 | #if (CONFIG_COMMANDS & CFG_CMD_CDP) |
1168 | if (iscdp) { | |
1169 | CDPHandler((uchar *)ip, len); | |
1170 | return; | |
1171 | } | |
1172 | #endif | |
1173 | ||
1174 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1175 | if (vlanid == VLAN_NONE) | |
1176 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1177 | /* not matched? */ | |
1178 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1179 | return; | |
1180 | } | |
1181 | ||
2d966958 WD |
1182 | switch (x) { |
1183 | ||
1184 | case PROT_ARP: | |
1185 | /* | |
1186 | * We have to deal with two types of ARP packets: | |
8bde7f77 WD |
1187 | * - REQUEST packets will be answered by sending our |
1188 | * IP address - if we know it. | |
1189 | * - REPLY packates are expected only after we asked | |
1190 | * for the TFTP server's or the gateway's ethernet | |
1191 | * address; so if we receive such a packet, we set | |
1192 | * the server ethernet address | |
2d966958 WD |
1193 | */ |
1194 | #ifdef ET_DEBUG | |
4b9206ed | 1195 | puts ("Got ARP\n"); |
2d966958 WD |
1196 | #endif |
1197 | arp = (ARP_t *)ip; | |
1198 | if (len < ARP_HDR_SIZE) { | |
1199 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1200 | return; | |
1201 | } | |
1202 | if (ntohs(arp->ar_hrd) != ARP_ETHER) { | |
1203 | return; | |
1204 | } | |
1205 | if (ntohs(arp->ar_pro) != PROT_IP) { | |
1206 | return; | |
1207 | } | |
1208 | if (arp->ar_hln != 6) { | |
1209 | return; | |
1210 | } | |
1211 | if (arp->ar_pln != 4) { | |
1212 | return; | |
1213 | } | |
1214 | ||
1215 | if (NetOurIP == 0) { | |
1216 | return; | |
1217 | } | |
1218 | ||
1219 | if (NetReadIP(&arp->ar_data[16]) != NetOurIP) { | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | switch (ntohs(arp->ar_op)) { | |
1224 | case ARPOP_REQUEST: /* reply with our IP address */ | |
1225 | #ifdef ET_DEBUG | |
4b9206ed | 1226 | puts ("Got ARP REQUEST, return our IP\n"); |
2d966958 | 1227 | #endif |
a3d991bd WD |
1228 | pkt = (uchar *)et; |
1229 | pkt += NetSetEther(pkt, et->et_src, PROT_ARP); | |
2d966958 WD |
1230 | arp->ar_op = htons(ARPOP_REPLY); |
1231 | memcpy (&arp->ar_data[10], &arp->ar_data[0], 6); | |
1232 | NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]); | |
1233 | memcpy (&arp->ar_data[ 0], NetOurEther, 6); | |
1234 | NetCopyIP(&arp->ar_data[ 6], &NetOurIP); | |
a3d991bd | 1235 | (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE); |
2d966958 | 1236 | return; |
73a8b27c WD |
1237 | |
1238 | case ARPOP_REPLY: /* arp reply */ | |
1239 | /* are we waiting for a reply */ | |
1240 | if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC) | |
1241 | break; | |
2d966958 | 1242 | #ifdef ET_DEBUG |
73a8b27c WD |
1243 | printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n", |
1244 | arp->ar_data[0], arp->ar_data[1], | |
1245 | arp->ar_data[2], arp->ar_data[3], | |
1246 | arp->ar_data[4], arp->ar_data[5]); | |
2d966958 | 1247 | #endif |
73a8b27c WD |
1248 | |
1249 | tmp = NetReadIP(&arp->ar_data[6]); | |
1250 | ||
1251 | /* matched waiting packet's address */ | |
1252 | if (tmp == NetArpWaitReplyIP) { | |
1253 | #ifdef ET_DEBUG | |
4b9206ed | 1254 | puts ("Got it\n"); |
73a8b27c WD |
1255 | #endif |
1256 | /* save address for later use */ | |
1257 | memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6); | |
1258 | ||
1259 | /* modify header, and transmit it */ | |
1260 | memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6); | |
1261 | (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize); | |
1262 | ||
1263 | /* no arp request pending now */ | |
1264 | NetArpWaitPacketIP = 0; | |
1265 | NetArpWaitTxPacketSize = 0; | |
1266 | NetArpWaitPacketMAC = NULL; | |
1267 | ||
1268 | } | |
2d966958 WD |
1269 | return; |
1270 | default: | |
1271 | #ifdef ET_DEBUG | |
1272 | printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op)); | |
1273 | #endif | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | case PROT_RARP: | |
1278 | #ifdef ET_DEBUG | |
4b9206ed | 1279 | puts ("Got RARP\n"); |
2d966958 WD |
1280 | #endif |
1281 | arp = (ARP_t *)ip; | |
1282 | if (len < ARP_HDR_SIZE) { | |
1283 | printf("bad length %d < %d\n", len, ARP_HDR_SIZE); | |
1284 | return; | |
1285 | } | |
1286 | ||
1287 | if ((ntohs(arp->ar_op) != RARPOP_REPLY) || | |
1288 | (ntohs(arp->ar_hrd) != ARP_ETHER) || | |
1289 | (ntohs(arp->ar_pro) != PROT_IP) || | |
1290 | (arp->ar_hln != 6) || (arp->ar_pln != 4)) { | |
1291 | ||
4b9206ed | 1292 | puts ("invalid RARP header\n"); |
2d966958 WD |
1293 | } else { |
1294 | NetCopyIP(&NetOurIP, &arp->ar_data[16]); | |
3d3befa7 WD |
1295 | if (NetServerIP == 0) |
1296 | NetCopyIP(&NetServerIP, &arp->ar_data[ 6]); | |
2d966958 WD |
1297 | memcpy (NetServerEther, &arp->ar_data[ 0], 6); |
1298 | ||
1299 | (*packetHandler)(0,0,0,0); | |
1300 | } | |
1301 | break; | |
1302 | ||
1303 | case PROT_IP: | |
1304 | #ifdef ET_DEBUG | |
4b9206ed | 1305 | puts ("Got IP\n"); |
2d966958 WD |
1306 | #endif |
1307 | if (len < IP_HDR_SIZE) { | |
1308 | debug ("len bad %d < %d\n", len, IP_HDR_SIZE); | |
1309 | return; | |
1310 | } | |
1311 | if (len < ntohs(ip->ip_len)) { | |
1312 | printf("len bad %d < %d\n", len, ntohs(ip->ip_len)); | |
1313 | return; | |
1314 | } | |
1315 | len = ntohs(ip->ip_len); | |
1316 | #ifdef ET_DEBUG | |
1317 | printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff); | |
1318 | #endif | |
1319 | if ((ip->ip_hl_v & 0xf0) != 0x40) { | |
1320 | return; | |
1321 | } | |
1322 | if (ip->ip_off & htons(0x1fff)) { /* Can't deal w/ fragments */ | |
1323 | return; | |
1324 | } | |
1325 | if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) { | |
4b9206ed | 1326 | puts ("checksum bad\n"); |
2d966958 WD |
1327 | return; |
1328 | } | |
1329 | tmp = NetReadIP(&ip->ip_dst); | |
1330 | if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) { | |
1331 | return; | |
1332 | } | |
1333 | /* | |
1334 | * watch for ICMP host redirects | |
1335 | * | |
8bde7f77 WD |
1336 | * There is no real handler code (yet). We just watch |
1337 | * for ICMP host redirect messages. In case anybody | |
1338 | * sees these messages: please contact me | |
1339 | * (wd@denx.de), or - even better - send me the | |
1340 | * necessary fixes :-) | |
2d966958 | 1341 | * |
8bde7f77 WD |
1342 | * Note: in all cases where I have seen this so far |
1343 | * it was a problem with the router configuration, | |
1344 | * for instance when a router was configured in the | |
1345 | * BOOTP reply, but the TFTP server was on the same | |
1346 | * subnet. So this is probably a warning that your | |
1347 | * configuration might be wrong. But I'm not really | |
1348 | * sure if there aren't any other situations. | |
2d966958 WD |
1349 | */ |
1350 | if (ip->ip_p == IPPROTO_ICMP) { | |
1351 | ICMP_t *icmph = (ICMP_t *)&(ip->udp_src); | |
1352 | ||
73a8b27c WD |
1353 | switch (icmph->type) { |
1354 | case ICMP_REDIRECT: | |
2d966958 WD |
1355 | if (icmph->code != ICMP_REDIR_HOST) |
1356 | return; | |
1357 | puts (" ICMP Host Redirect to "); | |
1358 | print_IPaddr(icmph->un.gateway); | |
1359 | putc(' '); | |
73a8b27c WD |
1360 | break; |
1361 | #if (CONFIG_COMMANDS & CFG_CMD_PING) | |
1362 | case ICMP_ECHO_REPLY: | |
1363 | /* | |
1364 | * IP header OK. Pass the packet to the current handler. | |
1365 | */ | |
1366 | /* XXX point to ip packet */ | |
1367 | (*packetHandler)((uchar *)ip, 0, 0, 0); | |
1368 | break; | |
1369 | #endif | |
1370 | default: | |
1371 | return; | |
1372 | } | |
2d966958 WD |
1373 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1374 | return; | |
1375 | } | |
1376 | ||
1377 | /* | |
1378 | * IP header OK. Pass the packet to the current handler. | |
1379 | */ | |
1380 | (*packetHandler)((uchar *)ip +IP_HDR_SIZE, | |
1381 | ntohs(ip->udp_dst), | |
1382 | ntohs(ip->udp_src), | |
1383 | ntohs(ip->udp_len) - 8); | |
1384 | ||
1385 | break; | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | ||
1390 | /**********************************************************************/ | |
1391 | ||
1392 | static int net_check_prereq (proto_t protocol) | |
1393 | { | |
1394 | switch (protocol) { | |
73a8b27c WD |
1395 | /* Fall through */ |
1396 | #if (CONFIG_COMMANDS & CFG_CMD_PING) | |
1397 | case PING: | |
1398 | if (NetPingIP == 0) { | |
1399 | puts ("*** ERROR: ping address not given\n"); | |
1400 | return (1); | |
1401 | } | |
1402 | goto common; | |
cbd8a35c WD |
1403 | #endif |
1404 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) | |
1405 | case NFS: | |
73a8b27c | 1406 | #endif |
2d966958 WD |
1407 | case TFTP: |
1408 | if (NetServerIP == 0) { | |
1409 | puts ("*** ERROR: `serverip' not set\n"); | |
1410 | return (1); | |
1411 | } | |
1412 | ||
73a8b27c WD |
1413 | #if (CONFIG_COMMANDS & CFG_CMD_PING) |
1414 | common: | |
1415 | #endif | |
1416 | ||
2d966958 WD |
1417 | if (NetOurIP == 0) { |
1418 | puts ("*** ERROR: `ipaddr' not set\n"); | |
1419 | return (1); | |
1420 | } | |
1421 | /* Fall through */ | |
1422 | ||
1423 | case DHCP: | |
1424 | case RARP: | |
1425 | case BOOTP: | |
a3d991bd | 1426 | case CDP: |
2d966958 WD |
1427 | if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
1428 | #ifdef CONFIG_NET_MULTI | |
1429 | extern int eth_get_dev_index (void); | |
1430 | int num = eth_get_dev_index(); | |
1431 | ||
1432 | switch (num) { | |
1433 | case -1: | |
1434 | puts ("*** ERROR: No ethernet found.\n"); | |
1435 | return (1); | |
1436 | case 0: | |
1437 | puts ("*** ERROR: `ethaddr' not set\n"); | |
1438 | break; | |
1439 | default: | |
8bde7f77 | 1440 | printf ("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1441 | num); |
1442 | break; | |
1443 | } | |
1444 | ||
1445 | NetStartAgain (); | |
1446 | return (2); | |
1447 | #else | |
1448 | puts ("*** ERROR: `ethaddr' not set\n"); | |
1449 | return (1); | |
1450 | #endif | |
1451 | } | |
1452 | /* Fall through */ | |
73a8b27c WD |
1453 | default: |
1454 | return(0); | |
2d966958 WD |
1455 | } |
1456 | return (0); /* OK */ | |
1457 | } | |
1458 | /**********************************************************************/ | |
1459 | ||
1460 | int | |
1461 | NetCksumOk(uchar * ptr, int len) | |
1462 | { | |
1463 | return !((NetCksum(ptr, len) + 1) & 0xfffe); | |
1464 | } | |
1465 | ||
1466 | ||
1467 | unsigned | |
1468 | NetCksum(uchar * ptr, int len) | |
1469 | { | |
1470 | ulong xsum; | |
1471 | ||
1472 | xsum = 0; | |
1473 | while (len-- > 0) | |
1474 | xsum += *((ushort *)ptr)++; | |
1475 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
1476 | xsum = (xsum & 0xffff) + (xsum >> 16); | |
1477 | return (xsum & 0xffff); | |
1478 | } | |
1479 | ||
a3d991bd WD |
1480 | int |
1481 | NetEthHdrSize(void) | |
1482 | { | |
1483 | ushort myvlanid; | |
2d966958 | 1484 | |
a3d991bd WD |
1485 | myvlanid = ntohs(NetOurVLAN); |
1486 | if (myvlanid == (ushort)-1) | |
1487 | myvlanid = VLAN_NONE; | |
1488 | ||
1489 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE; | |
1490 | } | |
1491 | ||
1492 | int | |
2d966958 WD |
1493 | NetSetEther(volatile uchar * xet, uchar * addr, uint prot) |
1494 | { | |
1495 | Ethernet_t *et = (Ethernet_t *)xet; | |
a3d991bd WD |
1496 | ushort myvlanid; |
1497 | ||
1498 | myvlanid = ntohs(NetOurVLAN); | |
1499 | if (myvlanid == (ushort)-1) | |
1500 | myvlanid = VLAN_NONE; | |
2d966958 WD |
1501 | |
1502 | memcpy (et->et_dest, addr, 6); | |
1503 | memcpy (et->et_src, NetOurEther, 6); | |
a3d991bd | 1504 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
2d966958 | 1505 | et->et_protlen = htons(prot); |
a3d991bd WD |
1506 | return ETHER_HDR_SIZE; |
1507 | } else { | |
1508 | VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet; | |
2d966958 | 1509 | |
a3d991bd WD |
1510 | vet->vet_vlan_type = htons(PROT_VLAN); |
1511 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1512 | vet->vet_type = htons(prot); | |
1513 | return VLAN_ETHER_HDR_SIZE; | |
1514 | } | |
1515 | } | |
2d966958 WD |
1516 | |
1517 | void | |
1518 | NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len) | |
1519 | { | |
1520 | volatile IP_t *ip = (IP_t *)xip; | |
1521 | ||
1522 | /* | |
1523 | * If the data is an odd number of bytes, zero the | |
1524 | * byte after the last byte so that the checksum | |
1525 | * will work. | |
1526 | */ | |
1527 | if (len & 1) | |
1528 | xip[IP_HDR_SIZE + len] = 0; | |
1529 | ||
1530 | /* | |
1531 | * Construct an IP and UDP header. | |
1532 | (need to set no fragment bit - XXX) | |
1533 | */ | |
1534 | ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */ | |
1535 | ip->ip_tos = 0; | |
1536 | ip->ip_len = htons(IP_HDR_SIZE + len); | |
1537 | ip->ip_id = htons(NetIPID++); | |
1538 | ip->ip_off = htons(0x4000); /* No fragmentation */ | |
1539 | ip->ip_ttl = 255; | |
1540 | ip->ip_p = 17; /* UDP */ | |
1541 | ip->ip_sum = 0; | |
1542 | NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */ | |
1543 | NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */ | |
1544 | ip->udp_src = htons(sport); | |
1545 | ip->udp_dst = htons(dport); | |
1546 | ip->udp_len = htons(8 + len); | |
1547 | ip->udp_xsum = 0; | |
1548 | ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2); | |
1549 | } | |
1550 | ||
1551 | void copy_filename (uchar *dst, uchar *src, int size) | |
1552 | { | |
1553 | if (*src && (*src == '"')) { | |
1554 | ++src; | |
1555 | --size; | |
1556 | } | |
1557 | ||
1558 | while ((--size > 0) && *src && (*src != '"')) { | |
1559 | *dst++ = *src++; | |
1560 | } | |
1561 | *dst = '\0'; | |
1562 | } | |
1563 | ||
1564 | #endif /* CFG_CMD_NET */ | |
1565 | ||
1566 | void ip_to_string (IPaddr_t x, char *s) | |
1567 | { | |
a3d991bd WD |
1568 | x = ntohl (x); |
1569 | sprintf (s, "%d.%d.%d.%d", | |
1570 | (int) ((x >> 24) & 0xff), | |
1571 | (int) ((x >> 16) & 0xff), | |
1572 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
1573 | ); | |
2d966958 WD |
1574 | } |
1575 | ||
73a8b27c | 1576 | IPaddr_t string_to_ip(char *s) |
2d966958 WD |
1577 | { |
1578 | IPaddr_t addr; | |
73a8b27c | 1579 | char *e; |
2d966958 WD |
1580 | int i; |
1581 | ||
73a8b27c WD |
1582 | if (s == NULL) |
1583 | return(0); | |
2d966958 WD |
1584 | |
1585 | for (addr=0, i=0; i<4; ++i) { | |
1586 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
1587 | addr <<= 8; | |
1588 | addr |= (val & 0xFF); | |
1589 | if (s) { | |
1590 | s = (*e) ? e+1 : e; | |
1591 | } | |
1592 | } | |
1593 | ||
1594 | return (htonl(addr)); | |
1595 | } | |
73a8b27c | 1596 | |
a3d991bd WD |
1597 | void VLAN_to_string(ushort x, char *s) |
1598 | { | |
1599 | x = ntohs(x); | |
1600 | ||
1601 | if (x == (ushort)-1) | |
1602 | x = VLAN_NONE; | |
1603 | ||
1604 | if (x == VLAN_NONE) | |
1605 | strcpy(s, "none"); | |
1606 | else | |
1607 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1608 | } | |
1609 | ||
1610 | ushort string_to_VLAN(char *s) | |
1611 | { | |
1612 | ushort id; | |
1613 | ||
1614 | if (s == NULL) | |
1615 | return VLAN_NONE; | |
1616 | ||
1617 | if (*s < '0' || *s > '9') | |
1618 | id = VLAN_NONE; | |
1619 | else | |
1620 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1621 | ||
1622 | return id; | |
1623 | } | |
1624 | ||
73a8b27c WD |
1625 | void print_IPaddr (IPaddr_t x) |
1626 | { | |
a3d991bd | 1627 | char tmp[16]; |
73a8b27c | 1628 | |
a3d991bd | 1629 | ip_to_string (x, tmp); |
73a8b27c | 1630 | |
a3d991bd | 1631 | puts (tmp); |
73a8b27c WD |
1632 | } |
1633 | ||
1634 | IPaddr_t getenv_IPaddr (char *var) | |
1635 | { | |
1636 | return (string_to_ip(getenv(var))); | |
1637 | } | |
a3d991bd WD |
1638 | |
1639 | ushort getenv_VLAN(char *var) | |
1640 | { | |
1641 | return (string_to_VLAN(getenv(var))); | |
1642 | } |