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Commit | Line | Data |
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3861aa5c WD |
1 | /* |
2 | * Based on LiMon - BOOTP. | |
3 | * | |
4 | * Copyright 1994, 1995, 2000 Neil Russell. | |
5 | * (See License) | |
6 | * Copyright 2000 Roland Borde | |
7 | * Copyright 2000 Paolo Scaffardi | |
232c150a | 8 | * Copyright 2000-2004 Wolfgang Denk, wd@denx.de |
3861aa5c WD |
9 | */ |
10 | ||
11 | #if 0 | |
232c150a WD |
12 | #define DEBUG 1 /* general debug */ |
13 | #define DEBUG_BOOTP_EXT 1 /* Debug received vendor fields */ | |
3861aa5c WD |
14 | #endif |
15 | ||
16 | #ifdef DEBUG_BOOTP_EXT | |
17 | #define debug_ext(fmt,args...) printf (fmt ,##args) | |
18 | #else | |
19 | #define debug_ext(fmt,args...) | |
20 | #endif | |
21 | ||
22 | #include <common.h> | |
23 | #include <command.h> | |
24 | #include <net.h> | |
25 | #include "bootp.h" | |
26 | #include "tftp.h" | |
232c150a | 27 | #include "nfs.h" |
3861aa5c WD |
28 | #ifdef CONFIG_STATUS_LED |
29 | #include <status_led.h> | |
30 | #endif | |
31 | ||
232c150a | 32 | #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ |
3861aa5c WD |
33 | |
34 | #if (CONFIG_COMMANDS & CFG_CMD_NET) | |
35 | ||
36 | #define TIMEOUT 5 /* Seconds before trying BOOTP again */ | |
232c150a | 37 | #ifndef CONFIG_NET_RETRY_COUNT |
3861aa5c WD |
38 | # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
39 | #else | |
232c150a | 40 | # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) |
3861aa5c WD |
41 | #endif |
42 | ||
43 | #define PORT_BOOTPS 67 /* BOOTP server UDP port */ | |
44 | #define PORT_BOOTPC 68 /* BOOTP client UDP port */ | |
45 | ||
46 | #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ | |
232c150a | 47 | #define CONFIG_DHCP_MIN_EXT_LEN 64 |
3861aa5c WD |
48 | #endif |
49 | ||
50 | ulong BootpID; | |
51 | int BootpTry; | |
52 | #ifdef CONFIG_BOOTP_RANDOM_DELAY | |
53 | ulong seed1, seed2; | |
54 | #endif | |
55 | ||
56 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
57 | dhcp_state_t dhcp_state = INIT; | |
682011ff | 58 | unsigned long dhcp_leasetime = 0; |
759a51b4 | 59 | IPaddr_t NetDHCPServerIP = 0; |
3861aa5c WD |
60 | static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len); |
61 | ||
62 | /* For Debug */ | |
3e38691e WD |
63 | #if 0 |
64 | static char *dhcpmsg2str(int type) | |
3861aa5c WD |
65 | { |
66 | switch (type) { | |
232c150a WD |
67 | case 1: return "DHCPDISCOVER"; break; |
68 | case 2: return "DHCPOFFER"; break; | |
69 | case 3: return "DHCPREQUEST"; break; | |
70 | case 4: return "DHCPDECLINE"; break; | |
71 | case 5: return "DHCPACK"; break; | |
72 | case 6: return "DHCPNACK"; break; | |
73 | case 7: return "DHCPRELEASE"; break; | |
3861aa5c WD |
74 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
75 | } | |
76 | } | |
3e38691e | 77 | #endif |
3861aa5c WD |
78 | |
79 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) | |
80 | extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */ | |
81 | extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */ | |
82 | #endif | |
83 | ||
84 | #endif /* CFG_CMD_DHCP */ | |
85 | ||
86 | static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) | |
87 | { | |
88 | Bootp_t *bp = (Bootp_t *) pkt; | |
89 | int retval = 0; | |
90 | ||
91 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) | |
92 | retval = -1; | |
93 | else if (len < sizeof (Bootp_t) - OPT_SIZE) | |
94 | retval = -2; | |
95 | else if (bp->bp_op != OP_BOOTREQUEST && | |
96 | bp->bp_op != OP_BOOTREPLY && | |
97 | bp->bp_op != DHCP_OFFER && | |
98 | bp->bp_op != DHCP_ACK && | |
99 | bp->bp_op != DHCP_NAK ) { | |
100 | retval = -3; | |
101 | } | |
102 | else if (bp->bp_htype != HWT_ETHER) | |
103 | retval = -4; | |
104 | else if (bp->bp_hlen != HWL_ETHER) | |
105 | retval = -5; | |
106 | else if (NetReadLong((ulong*)&bp->bp_id) != BootpID) { | |
107 | retval = -6; | |
108 | } | |
109 | ||
110 | debug ("Filtering pkt = %d\n", retval); | |
111 | ||
112 | return retval; | |
113 | } | |
114 | ||
115 | /* | |
116 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet | |
117 | */ | |
3e38691e | 118 | static void BootpCopyNetParams(Bootp_t *bp) |
3861aa5c | 119 | { |
3d3befa7 WD |
120 | IPaddr_t tmp_ip; |
121 | ||
3861aa5c | 122 | NetCopyIP(&NetOurIP, &bp->bp_yiaddr); |
3d3befa7 WD |
123 | NetCopyIP(&tmp_ip, &bp->bp_siaddr); |
124 | if (tmp_ip != 0) | |
125 | NetCopyIP(&NetServerIP, &bp->bp_siaddr); | |
3861aa5c | 126 | memcpy (NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src, 6); |
3d3befa7 WD |
127 | if (strlen(bp->bp_file) > 0) |
128 | copy_filename (BootFile, bp->bp_file, sizeof(BootFile)); | |
3861aa5c WD |
129 | |
130 | debug ("Bootfile: %s\n", BootFile); | |
131 | ||
132 | /* Propagate to environment: | |
8bde7f77 | 133 | * don't delete exising entry when BOOTP / DHCP reply does |
3861aa5c WD |
134 | * not contain a new value |
135 | */ | |
136 | if (*BootFile) { | |
137 | setenv ("bootfile", BootFile); | |
138 | } | |
139 | } | |
140 | ||
141 | static int truncate_sz (const char *name, int maxlen, int curlen) | |
142 | { | |
143 | if (curlen >= maxlen) { | |
144 | printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n", | |
145 | name, curlen, maxlen); | |
146 | curlen = maxlen - 1; | |
147 | } | |
148 | return (curlen); | |
149 | } | |
150 | ||
151 | #if !(CONFIG_COMMANDS & CFG_CMD_DHCP) | |
152 | ||
232c150a | 153 | static void BootpVendorFieldProcess (u8 * ext) |
3861aa5c | 154 | { |
232c150a | 155 | int size = *(ext + 1); |
3861aa5c | 156 | |
232c150a WD |
157 | debug_ext ("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
158 | *(ext + 1)); | |
3861aa5c | 159 | |
232c150a | 160 | NetBootFileSize = 0; |
3861aa5c | 161 | |
232c150a WD |
162 | switch (*ext) { |
163 | /* Fixed length fields */ | |
164 | case 1: /* Subnet mask */ | |
3861aa5c | 165 | if (NetOurSubnetMask == 0) |
232c150a | 166 | NetCopyIP (&NetOurSubnetMask, (IPaddr_t *) (ext + 2)); |
3861aa5c | 167 | break; |
232c150a | 168 | case 2: /* Time offset - Not yet supported */ |
3861aa5c | 169 | break; |
232c150a WD |
170 | /* Variable length fields */ |
171 | case 3: /* Gateways list */ | |
3861aa5c | 172 | if (NetOurGatewayIP == 0) { |
232c150a | 173 | NetCopyIP (&NetOurGatewayIP, (IPaddr_t *) (ext + 2)); |
3861aa5c WD |
174 | } |
175 | break; | |
232c150a | 176 | case 4: /* Time server - Not yet supported */ |
3861aa5c | 177 | break; |
232c150a | 178 | case 5: /* IEN-116 name server - Not yet supported */ |
3861aa5c WD |
179 | break; |
180 | case 6: | |
181 | if (NetOurDNSIP == 0) { | |
232c150a | 182 | NetCopyIP (&NetOurDNSIP, (IPaddr_t *) (ext + 2)); |
3861aa5c | 183 | } |
fe389a82 SR |
184 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2) |
185 | if ((NetOurDNS2IP == 0) && (size > 4)) { | |
232c150a | 186 | NetCopyIP (&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4)); |
fe389a82 SR |
187 | } |
188 | #endif | |
3861aa5c | 189 | break; |
232c150a | 190 | case 7: /* Log server - Not yet supported */ |
3861aa5c | 191 | break; |
232c150a | 192 | case 8: /* Cookie/Quote server - Not yet supported */ |
3861aa5c | 193 | break; |
232c150a | 194 | case 9: /* LPR server - Not yet supported */ |
3861aa5c | 195 | break; |
232c150a | 196 | case 10: /* Impress server - Not yet supported */ |
3861aa5c | 197 | break; |
232c150a | 198 | case 11: /* RPL server - Not yet supported */ |
3861aa5c | 199 | break; |
232c150a | 200 | case 12: /* Host name */ |
3861aa5c | 201 | if (NetOurHostName[0] == 0) { |
232c150a WD |
202 | size = truncate_sz ("Host Name", sizeof (NetOurHostName), size); |
203 | memcpy (&NetOurHostName, ext + 2, size); | |
204 | NetOurHostName[size] = 0; | |
3861aa5c WD |
205 | } |
206 | break; | |
232c150a | 207 | case 13: /* Boot file size */ |
3861aa5c | 208 | if (size == 2) |
232c150a | 209 | NetBootFileSize = ntohs (*(ushort *) (ext + 2)); |
3861aa5c | 210 | else if (size == 4) |
232c150a | 211 | NetBootFileSize = ntohl (*(ulong *) (ext + 2)); |
3861aa5c | 212 | break; |
232c150a | 213 | case 14: /* Merit dump file - Not yet supported */ |
3861aa5c | 214 | break; |
232c150a | 215 | case 15: /* Domain name - Not yet supported */ |
3861aa5c | 216 | break; |
232c150a | 217 | case 16: /* Swap server - Not yet supported */ |
3861aa5c | 218 | break; |
232c150a | 219 | case 17: /* Root path */ |
3861aa5c | 220 | if (NetOurRootPath[0] == 0) { |
232c150a WD |
221 | size = truncate_sz ("Root Path", sizeof (NetOurRootPath), size); |
222 | memcpy (&NetOurRootPath, ext + 2, size); | |
223 | NetOurRootPath[size] = 0; | |
3861aa5c WD |
224 | } |
225 | break; | |
232c150a | 226 | case 18: /* Extension path - Not yet supported */ |
3861aa5c | 227 | /* |
8bde7f77 WD |
228 | * This can be used to send the information of the |
229 | * vendor area in another file that the client can | |
230 | * access via TFTP. | |
3861aa5c WD |
231 | */ |
232 | break; | |
232c150a WD |
233 | /* IP host layer fields */ |
234 | case 40: /* NIS Domain name */ | |
3861aa5c | 235 | if (NetOurNISDomain[0] == 0) { |
232c150a WD |
236 | size = truncate_sz ("NIS Domain Name", sizeof (NetOurNISDomain), size); |
237 | memcpy (&NetOurNISDomain, ext + 2, size); | |
238 | NetOurNISDomain[size] = 0; | |
3861aa5c WD |
239 | } |
240 | break; | |
232c150a WD |
241 | /* Application layer fields */ |
242 | case 43: /* Vendor specific info - Not yet supported */ | |
3861aa5c | 243 | /* |
8bde7f77 WD |
244 | * Binary information to exchange specific |
245 | * product information. | |
3861aa5c WD |
246 | */ |
247 | break; | |
232c150a WD |
248 | /* Reserved (custom) fields (128..254) */ |
249 | } | |
3861aa5c WD |
250 | } |
251 | ||
232c150a | 252 | static void BootpVendorProcess (u8 * ext, int size) |
3861aa5c | 253 | { |
232c150a | 254 | u8 *end = ext + size; |
3861aa5c | 255 | |
232c150a | 256 | debug_ext ("[BOOTP] Checking extension (%d bytes)...\n", size); |
3861aa5c | 257 | |
232c150a WD |
258 | while ((ext < end) && (*ext != 0xff)) { |
259 | if (*ext == 0) { | |
260 | ext++; | |
261 | } else { | |
262 | u8 *opt = ext; | |
263 | ||
264 | ext += ext[1] + 2; | |
265 | if (ext <= end) | |
266 | BootpVendorFieldProcess (opt); | |
267 | } | |
3861aa5c | 268 | } |
3861aa5c WD |
269 | |
270 | #ifdef DEBUG_BOOTP_EXT | |
4b9206ed | 271 | puts ("[BOOTP] Received fields: \n"); |
232c150a WD |
272 | if (NetOurSubnetMask) { |
273 | puts ("NetOurSubnetMask : "); | |
274 | print_IPaddr (NetOurSubnetMask); | |
275 | putc ('\n'); | |
276 | } | |
277 | ||
278 | if (NetOurGatewayIP) { | |
279 | puts ("NetOurGatewayIP : "); | |
280 | print_IPaddr (NetOurGatewayIP); | |
281 | putc ('\n'); | |
282 | } | |
283 | ||
284 | if (NetBootFileSize) { | |
285 | printf ("NetBootFileSize : %d\n", NetBootFileSize); | |
286 | } | |
3861aa5c | 287 | |
232c150a WD |
288 | if (NetOurHostName[0]) { |
289 | printf ("NetOurHostName : %s\n", NetOurHostName); | |
290 | } | |
291 | ||
292 | if (NetOurRootPath[0]) { | |
293 | printf ("NetOurRootPath : %s\n", NetOurRootPath); | |
294 | } | |
295 | ||
296 | if (NetOurNISDomain[0]) { | |
297 | printf ("NetOurNISDomain : %s\n", NetOurNISDomain); | |
298 | } | |
299 | ||
300 | if (NetBootFileSize) { | |
301 | printf ("NetBootFileSize: %d\n", NetBootFileSize); | |
302 | } | |
303 | #endif /* DEBUG_BOOTP_EXT */ | |
304 | } | |
3861aa5c WD |
305 | /* |
306 | * Handle a BOOTP received packet. | |
307 | */ | |
308 | static void | |
309 | BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
310 | { | |
311 | Bootp_t *bp; | |
312 | char *s; | |
313 | ||
314 | debug ("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%d)\n", | |
315 | src, dest, len, sizeof (Bootp_t)); | |
316 | ||
317 | bp = (Bootp_t *)pkt; | |
318 | ||
232c150a | 319 | if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */ |
3861aa5c WD |
320 | return; |
321 | ||
322 | /* | |
232c150a | 323 | * Got a good BOOTP reply. Copy the data into our variables. |
3861aa5c WD |
324 | */ |
325 | #ifdef CONFIG_STATUS_LED | |
326 | status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF); | |
327 | #endif | |
328 | ||
329 | BootpCopyNetParams(bp); /* Store net parameters from reply */ | |
330 | ||
331 | /* Retrieve extended information (we must parse the vendor area) */ | |
332 | if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) | |
333 | BootpVendorProcess(&bp->bp_vend[4], len); | |
334 | ||
335 | NetSetTimeout(0, (thand_f *)0); | |
336 | ||
337 | debug ("Got good BOOTP\n"); | |
338 | ||
132ba5fd WD |
339 | if ((s = getenv("autoload")) != NULL) { |
340 | if (*s == 'n') { | |
341 | /* | |
342 | * Just use BOOTP to configure system; | |
343 | * Do not use TFTP to load the bootfile. | |
344 | */ | |
345 | NetState = NETLOOP_SUCCESS; | |
346 | return; | |
0e6d798c | 347 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) |
132ba5fd WD |
348 | } else if (strcmp(s, "NFS") == 0) { |
349 | /* | |
350 | * Use NFS to load the bootfile. | |
351 | */ | |
352 | NfsStart(); | |
353 | return; | |
0e6d798c | 354 | #endif |
132ba5fd | 355 | } |
3861aa5c WD |
356 | } |
357 | ||
73a8b27c | 358 | TftpStart(); |
3861aa5c WD |
359 | } |
360 | #endif /* !CFG_CMD_DHCP */ | |
361 | ||
362 | /* | |
363 | * Timeout on BOOTP/DHCP request. | |
364 | */ | |
365 | static void | |
366 | BootpTimeout(void) | |
367 | { | |
368 | if (BootpTry >= TIMEOUT_COUNT) { | |
369 | puts ("\nRetry count exceeded; starting again\n"); | |
370 | NetStartAgain (); | |
371 | } else { | |
372 | NetSetTimeout (TIMEOUT * CFG_HZ, BootpTimeout); | |
373 | BootpRequest (); | |
374 | } | |
375 | } | |
376 | ||
377 | /* | |
378 | * Initialize BOOTP extension fields in the request. | |
379 | */ | |
380 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
232c150a | 381 | static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP) |
3861aa5c | 382 | { |
232c150a WD |
383 | u8 *start = e; |
384 | u8 *cnt; | |
385 | ||
3861aa5c | 386 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) |
232c150a | 387 | u8 *x; |
3861aa5c | 388 | #endif |
fe389a82 | 389 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME) |
232c150a | 390 | uchar *hostname; |
fe389a82 | 391 | #endif |
3861aa5c | 392 | |
232c150a WD |
393 | *e++ = 99; /* RFC1048 Magic Cookie */ |
394 | *e++ = 130; | |
395 | *e++ = 83; | |
396 | *e++ = 99; | |
3861aa5c | 397 | |
232c150a WD |
398 | *e++ = 53; /* DHCP Message Type */ |
399 | *e++ = 1; | |
400 | *e++ = message_type; | |
3861aa5c | 401 | |
232c150a WD |
402 | *e++ = 57; /* Maximum DHCP Message Size */ |
403 | *e++ = 2; | |
404 | *e++ = (576 - 312 + OPT_SIZE) >> 8; | |
405 | *e++ = (576 - 312 + OPT_SIZE) & 0xff; | |
3861aa5c | 406 | |
232c150a WD |
407 | if (ServerID) { |
408 | int tmp = ntohl (ServerID); | |
3861aa5c | 409 | |
232c150a WD |
410 | *e++ = 54; /* ServerID */ |
411 | *e++ = 4; | |
412 | *e++ = tmp >> 24; | |
413 | *e++ = tmp >> 16; | |
414 | *e++ = tmp >> 8; | |
415 | *e++ = tmp & 0xff; | |
416 | } | |
3861aa5c | 417 | |
232c150a WD |
418 | if (RequestedIP) { |
419 | int tmp = ntohl (RequestedIP); | |
3861aa5c | 420 | |
232c150a WD |
421 | *e++ = 50; /* Requested IP */ |
422 | *e++ = 4; | |
423 | *e++ = tmp >> 24; | |
424 | *e++ = tmp >> 16; | |
425 | *e++ = tmp >> 8; | |
426 | *e++ = tmp & 0xff; | |
427 | } | |
fe389a82 | 428 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME) |
232c150a WD |
429 | if ((hostname = getenv ("hostname"))) { |
430 | int hostnamelen = strlen (hostname); | |
431 | ||
432 | *e++ = 12; /* Hostname */ | |
433 | *e++ = hostnamelen; | |
434 | memcpy (e, hostname, hostnamelen); | |
435 | e += hostnamelen; | |
436 | } | |
fe389a82 SR |
437 | #endif |
438 | ||
3861aa5c | 439 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) |
232c150a WD |
440 | if ((x = dhcp_vendorex_prep (e))) |
441 | return x - start; | |
3861aa5c WD |
442 | #endif |
443 | ||
232c150a WD |
444 | *e++ = 55; /* Parameter Request List */ |
445 | cnt = e++; /* Pointer to count of requested items */ | |
446 | *cnt = 0; | |
3861aa5c | 447 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
448 | *e++ = 1; /* Subnet Mask */ |
449 | *cnt += 1; | |
3861aa5c WD |
450 | #endif |
451 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY) | |
232c150a WD |
452 | *e++ = 3; /* Router Option */ |
453 | *cnt += 1; | |
3861aa5c WD |
454 | #endif |
455 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS) | |
232c150a WD |
456 | *e++ = 6; /* DNS Server(s) */ |
457 | *cnt += 1; | |
3861aa5c WD |
458 | #endif |
459 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME) | |
232c150a WD |
460 | *e++ = 12; /* Hostname */ |
461 | *cnt += 1; | |
3861aa5c WD |
462 | #endif |
463 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE) | |
232c150a WD |
464 | *e++ = 13; /* Boot File Size */ |
465 | *cnt += 1; | |
3861aa5c WD |
466 | #endif |
467 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH) | |
232c150a WD |
468 | *e++ = 17; /* Boot path */ |
469 | *cnt += 1; | |
3861aa5c WD |
470 | #endif |
471 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN) | |
232c150a WD |
472 | *e++ = 40; /* NIS Domain name request */ |
473 | *cnt += 1; | |
3861aa5c | 474 | #endif |
232c150a | 475 | *e++ = 255; /* End of the list */ |
3861aa5c | 476 | |
232c150a | 477 | /* Pad to minimal length */ |
3861aa5c | 478 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
232c150a WD |
479 | while ((e - start) <= CONFIG_DHCP_MIN_EXT_LEN) |
480 | *e++ = 0; | |
3861aa5c WD |
481 | #endif |
482 | ||
232c150a | 483 | return e - start; |
3861aa5c WD |
484 | } |
485 | ||
486 | #else /* CFG_CMD_DHCP */ | |
487 | /* | |
488 | * Warning: no field size check - change CONFIG_BOOTP_MASK at your own risk! | |
489 | */ | |
232c150a | 490 | static int BootpExtended (u8 * e) |
3861aa5c | 491 | { |
232c150a | 492 | u8 *start = e; |
3861aa5c | 493 | |
232c150a WD |
494 | *e++ = 99; /* RFC1048 Magic Cookie */ |
495 | *e++ = 130; | |
496 | *e++ = 83; | |
497 | *e++ = 99; | |
3861aa5c WD |
498 | |
499 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
232c150a WD |
500 | *e++ = 53; /* DHCP Message Type */ |
501 | *e++ = 1; | |
502 | *e++ = DHCP_DISCOVER; | |
503 | ||
504 | *e++ = 57; /* Maximum DHCP Message Size */ | |
505 | *e++ = 2; | |
506 | *e++ = (576 - 312 + OPT_SIZE) >> 16; | |
507 | *e++ = (576 - 312 + OPT_SIZE) & 0xff; | |
508 | #endif /* CFG_CMD_DHCP */ | |
3861aa5c WD |
509 | |
510 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK) | |
232c150a WD |
511 | *e++ = 1; /* Subnet mask request */ |
512 | *e++ = 4; | |
513 | e += 4; | |
3861aa5c WD |
514 | #endif |
515 | ||
516 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY) | |
232c150a WD |
517 | *e++ = 3; /* Default gateway request */ |
518 | *e++ = 4; | |
519 | e += 4; | |
3861aa5c WD |
520 | #endif |
521 | ||
522 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS) | |
232c150a WD |
523 | *e++ = 6; /* Domain Name Server */ |
524 | *e++ = 4; | |
525 | e += 4; | |
3861aa5c WD |
526 | #endif |
527 | ||
528 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME) | |
232c150a WD |
529 | *e++ = 12; /* Host name request */ |
530 | *e++ = 32; | |
531 | e += 32; | |
3861aa5c WD |
532 | #endif |
533 | ||
534 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE) | |
232c150a WD |
535 | *e++ = 13; /* Boot file size */ |
536 | *e++ = 2; | |
537 | e += 2; | |
3861aa5c WD |
538 | #endif |
539 | ||
540 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH) | |
232c150a WD |
541 | *e++ = 17; /* Boot path */ |
542 | *e++ = 32; | |
543 | e += 32; | |
3861aa5c WD |
544 | #endif |
545 | ||
546 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN) | |
232c150a WD |
547 | *e++ = 40; /* NIS Domain name request */ |
548 | *e++ = 32; | |
549 | e += 32; | |
3861aa5c WD |
550 | #endif |
551 | ||
232c150a | 552 | *e++ = 255; /* End of the list */ |
3861aa5c | 553 | |
232c150a | 554 | return e - start; |
3861aa5c WD |
555 | } |
556 | #endif /* CFG_CMD_DHCP */ | |
557 | ||
558 | void | |
559 | BootpRequest (void) | |
560 | { | |
561 | volatile uchar *pkt, *iphdr; | |
562 | Bootp_t *bp; | |
563 | int ext_len, pktlen, iplen; | |
564 | ||
565 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
566 | dhcp_state = INIT; | |
567 | #endif | |
568 | ||
569 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ | |
570 | unsigned char bi_enetaddr[6]; | |
571 | int reg; | |
572 | char *e,*s; | |
573 | uchar tmp[64]; | |
574 | ulong tst1, tst2, sum, m_mask, m_value = 0; | |
575 | ||
576 | if (BootpTry ==0) { | |
577 | /* get our mac */ | |
578 | reg = getenv_r ("ethaddr", tmp, sizeof(tmp)); | |
579 | s = (reg > 0) ? tmp : NULL; | |
580 | ||
581 | for (reg=0; reg<6; ++reg) { | |
582 | bi_enetaddr[reg] = s ? simple_strtoul(s, &e, 16) : 0; | |
583 | if (s) { | |
584 | s = (*e) ? e+1 : e; | |
585 | } | |
586 | } | |
587 | #ifdef DEBUG | |
4b9206ed | 588 | puts ("BootpRequest => Our Mac: "); |
3861aa5c WD |
589 | for (reg=0; reg<6; reg++) { |
590 | printf ("%x%c", | |
591 | bi_enetaddr[reg], | |
592 | reg==5 ? '\n' : ':'); | |
593 | } | |
594 | #endif /* DEBUG */ | |
595 | ||
596 | /* Mac-Manipulation 2 get seed1 */ | |
597 | tst1=0; | |
598 | tst2=0; | |
599 | for (reg=2; reg<6; reg++) { | |
600 | tst1 = tst1 << 8; | |
601 | tst1 = tst1 | bi_enetaddr[reg]; | |
602 | } | |
603 | for (reg=0; reg<2; reg++) { | |
604 | tst2 = tst2 | bi_enetaddr[reg]; | |
605 | tst2 = tst2 << 8; | |
606 | } | |
607 | ||
608 | seed1 = tst1^tst2; | |
609 | ||
610 | /* Mirror seed1*/ | |
611 | m_mask=0x1; | |
612 | for (reg=1;reg<=32;reg++) { | |
613 | m_value |= (m_mask & seed1); | |
614 | seed1 = seed1 >> 1; | |
615 | m_value = m_value << 1; | |
616 | } | |
617 | seed1 = m_value; | |
618 | seed2 = 0xB78D0945; | |
619 | } | |
620 | ||
621 | /* Random Number Generator */ | |
622 | ||
623 | for (reg=0;reg<=0;reg++) { | |
624 | sum = seed1 + seed2; | |
625 | if (sum < seed1 || sum < seed2) | |
626 | sum++; | |
8bde7f77 | 627 | seed2 = seed1; |
3861aa5c WD |
628 | seed1 = sum; |
629 | ||
630 | if (BootpTry<=2) { /* Start with max 1024 * 1ms */ | |
631 | sum = sum >> (22-BootpTry); | |
632 | } else { /*After 3rd BOOTP request max 8192 * 1ms */ | |
633 | sum = sum >> 19; | |
634 | } | |
635 | } | |
636 | ||
637 | printf ("Random delay: %ld ms...\n", sum); | |
638 | for (reg=0; reg <sum; reg++) { | |
639 | udelay(1000); /*Wait 1ms*/ | |
640 | } | |
641 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ | |
642 | ||
643 | printf("BOOTP broadcast %d\n", ++BootpTry); | |
644 | pkt = NetTxPacket; | |
645 | memset ((void*)pkt, 0, PKTSIZE); | |
646 | ||
a3d991bd | 647 | pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP); |
3861aa5c WD |
648 | |
649 | /* | |
650 | * Next line results in incorrect packet size being transmitted, resulting | |
651 | * in errors in some DHCP servers, reporting missing bytes. Size must be | |
652 | * set in packet header after extension length has been determined. | |
653 | * C. Hallinan, DS4.COM, Inc. | |
654 | */ | |
655 | /* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */ | |
656 | iphdr = pkt; /* We need this later for NetSetIP() */ | |
657 | pkt += IP_HDR_SIZE; | |
658 | ||
659 | bp = (Bootp_t *)pkt; | |
660 | bp->bp_op = OP_BOOTREQUEST; | |
661 | bp->bp_htype = HWT_ETHER; | |
662 | bp->bp_hlen = HWL_ETHER; | |
663 | bp->bp_hops = 0; | |
664 | bp->bp_secs = htons(get_timer(0) / CFG_HZ); | |
665 | NetWriteIP(&bp->bp_ciaddr, 0); | |
666 | NetWriteIP(&bp->bp_yiaddr, 0); | |
667 | NetWriteIP(&bp->bp_siaddr, 0); | |
668 | NetWriteIP(&bp->bp_giaddr, 0); | |
669 | memcpy (bp->bp_chaddr, NetOurEther, 6); | |
670 | copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file)); | |
671 | ||
672 | /* Request additional information from the BOOTP/DHCP server */ | |
673 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
674 | ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0); | |
675 | #else | |
676 | ext_len = BootpExtended(bp->bp_vend); | |
677 | #endif /* CFG_CMD_DHCP */ | |
678 | ||
679 | /* | |
680 | * Bootp ID is the lower 4 bytes of our ethernet address | |
681 | * plus the current time in HZ. | |
682 | */ | |
683 | BootpID = ((ulong)NetOurEther[2] << 24) | |
684 | | ((ulong)NetOurEther[3] << 16) | |
685 | | ((ulong)NetOurEther[4] << 8) | |
686 | | (ulong)NetOurEther[5]; | |
687 | BootpID += get_timer(0); | |
232c150a | 688 | BootpID = htonl(BootpID); |
3861aa5c WD |
689 | NetCopyLong(&bp->bp_id, &BootpID); |
690 | ||
691 | /* | |
692 | * Calculate proper packet lengths taking into account the | |
693 | * variable size of the options field | |
694 | */ | |
695 | pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len; | |
696 | iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len; | |
697 | NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
698 | NetSetTimeout(SELECT_TIMEOUT * CFG_HZ, BootpTimeout); | |
699 | ||
700 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
701 | dhcp_state = SELECTING; | |
702 | NetSetHandler(DhcpHandler); | |
703 | #else | |
704 | NetSetHandler(BootpHandler); | |
705 | #endif /* CFG_CMD_DHCP */ | |
706 | NetSendPacket(NetTxPacket, pktlen); | |
707 | } | |
708 | ||
709 | #if (CONFIG_COMMANDS & CFG_CMD_DHCP) | |
232c150a | 710 | static void DhcpOptionsProcess (uchar * popt) |
3861aa5c | 711 | { |
3e38691e | 712 | uchar *end = popt + BOOTP_HDR_SIZE; |
3861aa5c WD |
713 | int oplen, size; |
714 | ||
232c150a | 715 | while (popt < end && *popt != 0xff) { |
3861aa5c | 716 | oplen = *(popt + 1); |
232c150a WD |
717 | switch (*popt) { |
718 | case 1: | |
719 | NetCopyIP (&NetOurSubnetMask, (popt + 2)); | |
720 | break; | |
721 | case 3: | |
722 | NetCopyIP (&NetOurGatewayIP, (popt + 2)); | |
723 | break; | |
724 | case 6: | |
725 | NetCopyIP (&NetOurDNSIP, (popt + 2)); | |
fe389a82 | 726 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2) |
232c150a WD |
727 | if (*(popt + 1) > 4) { |
728 | NetCopyIP (&NetOurDNS2IP, (popt + 2 + 4)); | |
729 | } | |
fe389a82 | 730 | #endif |
232c150a WD |
731 | break; |
732 | case 12: | |
733 | size = truncate_sz ("Host Name", sizeof (NetOurHostName), oplen); | |
734 | memcpy (&NetOurHostName, popt + 2, size); | |
735 | NetOurHostName[size] = 0; | |
736 | break; | |
737 | case 15: /* Ignore Domain Name Option */ | |
738 | break; | |
739 | case 17: | |
740 | size = truncate_sz ("Root Path", sizeof (NetOurRootPath), oplen); | |
741 | memcpy (&NetOurRootPath, popt + 2, size); | |
742 | NetOurRootPath[size] = 0; | |
743 | break; | |
744 | case 51: | |
745 | NetCopyLong (&dhcp_leasetime, (ulong *) (popt + 2)); | |
746 | break; | |
747 | case 53: /* Ignore Message Type Option */ | |
748 | break; | |
749 | case 54: | |
750 | NetCopyIP (&NetDHCPServerIP, (popt + 2)); | |
751 | break; | |
752 | case 58: /* Ignore Renewal Time Option */ | |
753 | break; | |
754 | case 59: /* Ignore Rebinding Time Option */ | |
755 | break; | |
756 | default: | |
3861aa5c | 757 | #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX) |
232c150a | 758 | if (dhcp_vendorex_proc (popt)) |
8bde7f77 | 759 | break; |
3861aa5c | 760 | #endif |
232c150a WD |
761 | printf ("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt); |
762 | break; | |
3861aa5c WD |
763 | } |
764 | popt += oplen + 2; /* Process next option */ | |
765 | } | |
766 | } | |
767 | ||
768 | static int DhcpMessageType(unsigned char *popt) | |
769 | { | |
770 | if (NetReadLong((ulong*)popt) != htonl(BOOTP_VENDOR_MAGIC)) | |
771 | return -1; | |
772 | ||
773 | popt += 4; | |
774 | while ( *popt != 0xff ) { | |
775 | if ( *popt == 53 ) /* DHCP Message Type */ | |
776 | return *(popt + 2); | |
777 | popt += *(popt + 1) + 2; /* Scan through all options */ | |
778 | } | |
779 | return -1; | |
780 | } | |
781 | ||
3e38691e | 782 | static void DhcpSendRequestPkt(Bootp_t *bp_offer) |
3861aa5c WD |
783 | { |
784 | volatile uchar *pkt, *iphdr; | |
785 | Bootp_t *bp; | |
786 | int pktlen, iplen, extlen; | |
47cd00fa | 787 | IPaddr_t OfferedIP; |
3861aa5c WD |
788 | |
789 | debug ("DhcpSendRequestPkt: Sending DHCPREQUEST\n"); | |
790 | pkt = NetTxPacket; | |
791 | memset ((void*)pkt, 0, PKTSIZE); | |
792 | ||
a3d991bd | 793 | pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP); |
3861aa5c WD |
794 | |
795 | iphdr = pkt; /* We'll need this later to set proper pkt size */ | |
796 | pkt += IP_HDR_SIZE; | |
797 | ||
798 | bp = (Bootp_t *)pkt; | |
799 | bp->bp_op = OP_BOOTREQUEST; | |
800 | bp->bp_htype = HWT_ETHER; | |
801 | bp->bp_hlen = HWL_ETHER; | |
802 | bp->bp_hops = 0; | |
803 | bp->bp_secs = htons(get_timer(0) / CFG_HZ); | |
804 | NetCopyIP(&bp->bp_ciaddr, &bp_offer->bp_ciaddr); /* both in network byte order */ | |
805 | NetCopyIP(&bp->bp_yiaddr, &bp_offer->bp_yiaddr); | |
806 | NetCopyIP(&bp->bp_siaddr, &bp_offer->bp_siaddr); | |
807 | NetCopyIP(&bp->bp_giaddr, &bp_offer->bp_giaddr); | |
808 | memcpy (bp->bp_chaddr, NetOurEther, 6); | |
809 | ||
810 | /* | |
811 | * ID is the id of the OFFER packet | |
812 | */ | |
813 | ||
814 | NetCopyLong(&bp->bp_id, &bp_offer->bp_id); | |
815 | ||
816 | /* | |
817 | * Copy options from OFFER packet if present | |
818 | */ | |
47cd00fa | 819 | NetCopyIP(&OfferedIP, &bp->bp_yiaddr); |
759a51b4 | 820 | extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP); |
3861aa5c WD |
821 | |
822 | pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen; | |
823 | iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen; | |
824 | NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
825 | ||
826 | debug ("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); | |
827 | NetSendPacket(NetTxPacket, pktlen); | |
828 | } | |
829 | ||
830 | /* | |
831 | * Handle DHCP received packets. | |
832 | */ | |
833 | static void | |
834 | DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len) | |
835 | { | |
836 | Bootp_t *bp = (Bootp_t *)pkt; | |
837 | ||
838 | debug ("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", | |
839 | src, dest, len, dhcp_state); | |
840 | ||
232c150a | 841 | if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */ |
3861aa5c WD |
842 | return; |
843 | ||
844 | debug ("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n", | |
845 | src, dest, len, dhcp_state); | |
846 | ||
847 | switch (dhcp_state) { | |
848 | case SELECTING: | |
849 | /* | |
850 | * Wait an appropriate time for any potential DHCPOFFER packets | |
851 | * to arrive. Then select one, and generate DHCPREQUEST response. | |
852 | * If filename is in format we recognize, assume it is a valid | |
853 | * OFFER from a server we want. | |
854 | */ | |
855 | debug ("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); | |
856 | #ifdef CFG_BOOTFILE_PREFIX | |
857 | if (strncmp(bp->bp_file, | |
858 | CFG_BOOTFILE_PREFIX, | |
859 | strlen(CFG_BOOTFILE_PREFIX)) == 0 ) { | |
860 | #endif /* CFG_BOOTFILE_PREFIX */ | |
861 | ||
862 | debug ("TRANSITIONING TO REQUESTING STATE\n"); | |
863 | dhcp_state = REQUESTING; | |
759a51b4 | 864 | |
3861aa5c WD |
865 | if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
866 | DhcpOptionsProcess(&bp->bp_vend[4]); | |
867 | ||
232c150a | 868 | BootpCopyNetParams(bp); /* Store net params from reply */ |
3861aa5c WD |
869 | |
870 | NetSetTimeout(TIMEOUT * CFG_HZ, BootpTimeout); | |
871 | DhcpSendRequestPkt(bp); | |
872 | #ifdef CFG_BOOTFILE_PREFIX | |
873 | } | |
874 | #endif /* CFG_BOOTFILE_PREFIX */ | |
875 | ||
876 | return; | |
877 | break; | |
878 | case REQUESTING: | |
879 | debug ("DHCP State: REQUESTING\n"); | |
880 | ||
881 | if ( DhcpMessageType(bp->bp_vend) == DHCP_ACK ) { | |
882 | char *s; | |
883 | ||
884 | if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) | |
885 | DhcpOptionsProcess(&bp->bp_vend[4]); | |
232c150a | 886 | BootpCopyNetParams(bp); /* Store net params from reply */ |
3861aa5c | 887 | dhcp_state = BOUND; |
4b9206ed | 888 | puts ("DHCP client bound to address "); |
3861aa5c | 889 | print_IPaddr(NetOurIP); |
4b9206ed | 890 | putc ('\n'); |
3861aa5c WD |
891 | |
892 | /* Obey the 'autoload' setting */ | |
132ba5fd WD |
893 | if ((s = getenv("autoload")) != NULL) { |
894 | if (*s == 'n') { | |
895 | /* | |
896 | * Just use BOOTP to configure system; | |
897 | * Do not use TFTP to load the bootfile. | |
898 | */ | |
899 | NetState = NETLOOP_SUCCESS; | |
900 | return; | |
0e6d798c | 901 | #if (CONFIG_COMMANDS & CFG_CMD_NFS) |
132ba5fd WD |
902 | } else if (strcmp(s, "NFS") == 0) { |
903 | /* | |
904 | * Use NFS to load the bootfile. | |
905 | */ | |
906 | NfsStart(); | |
907 | return; | |
0e6d798c | 908 | #endif |
132ba5fd | 909 | } |
3861aa5c | 910 | } |
73a8b27c | 911 | TftpStart(); |
3861aa5c WD |
912 | return; |
913 | } | |
914 | break; | |
915 | default: | |
4b9206ed | 916 | puts ("DHCP: INVALID STATE\n"); |
3861aa5c WD |
917 | break; |
918 | } | |
919 | ||
920 | } | |
921 | ||
922 | void DhcpRequest(void) | |
923 | { | |
924 | BootpRequest(); | |
925 | } | |
926 | #endif /* CFG_CMD_DHCP */ | |
927 | ||
928 | #endif /* CFG_CMD_NET */ |