1 /* 2 * Copyright 1994, 1995, 2000 Neil Russell. 3 * (See License) 4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de 5 * Copyright 2011 Comelit Group SpA, 6 * Luca Ceresoli <luca.ceresoli@comelit.it> 7 */ 8 9 #include <common.h> 10 #include <command.h> 11 #include <net.h> 12 #include "tftp.h" 13 #include "bootp.h" 14 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP 15 #include <flash.h> 16 #endif 17 18 /* Well known TFTP port # */ 19 #define WELL_KNOWN_PORT 69 20 /* Millisecs to timeout for lost pkt */ 21 #define TIMEOUT 5000UL 22 #ifndef CONFIG_NET_RETRY_COUNT 23 /* # of timeouts before giving up */ 24 # define TIMEOUT_COUNT 10 25 #else 26 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2) 27 #endif 28 /* Number of "loading" hashes per line (for checking the image size) */ 29 #define HASHES_PER_LINE 65 30 31 /* 32 * TFTP operations. 33 */ 34 #define TFTP_RRQ 1 35 #define TFTP_WRQ 2 36 #define TFTP_DATA 3 37 #define TFTP_ACK 4 38 #define TFTP_ERROR 5 39 #define TFTP_OACK 6 40 41 static ulong TftpTimeoutMSecs = TIMEOUT; 42 static int TftpTimeoutCountMax = TIMEOUT_COUNT; 43 static ulong time_start; /* Record time we started tftp */ 44 45 /* 46 * These globals govern the timeout behavior when attempting a connection to a 47 * TFTP server. TftpRRQTimeoutMSecs specifies the number of milliseconds to 48 * wait for the server to respond to initial connection. Second global, 49 * TftpRRQTimeoutCountMax, gives the number of such connection retries. 50 * TftpRRQTimeoutCountMax must be non-negative and TftpRRQTimeoutMSecs must be 51 * positive. The globals are meant to be set (and restored) by code needing 52 * non-standard timeout behavior when initiating a TFTP transfer. 53 */ 54 ulong TftpRRQTimeoutMSecs = TIMEOUT; 55 int TftpRRQTimeoutCountMax = TIMEOUT_COUNT; 56 57 enum { 58 TFTP_ERR_UNDEFINED = 0, 59 TFTP_ERR_FILE_NOT_FOUND = 1, 60 TFTP_ERR_ACCESS_DENIED = 2, 61 TFTP_ERR_DISK_FULL = 3, 62 TFTP_ERR_UNEXPECTED_OPCODE = 4, 63 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5, 64 TFTP_ERR_FILE_ALREADY_EXISTS = 6, 65 }; 66 67 static IPaddr_t TftpRemoteIP; 68 /* The UDP port at their end */ 69 static int TftpRemotePort; 70 /* The UDP port at our end */ 71 static int TftpOurPort; 72 static int TftpTimeoutCount; 73 /* packet sequence number */ 74 static ulong TftpBlock; 75 /* last packet sequence number received */ 76 static ulong TftpLastBlock; 77 /* count of sequence number wraparounds */ 78 static ulong TftpBlockWrap; 79 /* memory offset due to wrapping */ 80 static ulong TftpBlockWrapOffset; 81 static int TftpState; 82 #ifdef CONFIG_TFTP_TSIZE 83 /* The file size reported by the server */ 84 static int TftpTsize; 85 /* The number of hashes we printed */ 86 static short TftpNumchars; 87 #endif 88 #ifdef CONFIG_CMD_TFTPPUT 89 static int TftpWriting; /* 1 if writing, else 0 */ 90 static int TftpFinalBlock; /* 1 if we have sent the last block */ 91 #else 92 #define TftpWriting 0 93 #endif 94 95 #define STATE_SEND_RRQ 1 96 #define STATE_DATA 2 97 #define STATE_TOO_LARGE 3 98 #define STATE_BAD_MAGIC 4 99 #define STATE_OACK 5 100 #define STATE_RECV_WRQ 6 101 #define STATE_SEND_WRQ 7 102 103 /* default TFTP block size */ 104 #define TFTP_BLOCK_SIZE 512 105 /* sequence number is 16 bit */ 106 #define TFTP_SEQUENCE_SIZE ((ulong)(1<<16)) 107 108 #define DEFAULT_NAME_LEN (8 + 4 + 1) 109 static char default_filename[DEFAULT_NAME_LEN]; 110 111 #ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN 112 #define MAX_LEN 128 113 #else 114 #define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN 115 #endif 116 117 static char tftp_filename[MAX_LEN]; 118 119 /* 512 is poor choice for ethernet, MTU is typically 1500. 120 * Minus eth.hdrs thats 1468. Can get 2x better throughput with 121 * almost-MTU block sizes. At least try... fall back to 512 if need be. 122 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file) 123 */ 124 #ifdef CONFIG_TFTP_BLOCKSIZE 125 #define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE 126 #else 127 #define TFTP_MTU_BLOCKSIZE 1468 128 #endif 129 130 static unsigned short TftpBlkSize = TFTP_BLOCK_SIZE; 131 static unsigned short TftpBlkSizeOption = TFTP_MTU_BLOCKSIZE; 132 133 #ifdef CONFIG_MCAST_TFTP 134 #include <malloc.h> 135 #define MTFTP_BITMAPSIZE 0x1000 136 static unsigned *Bitmap; 137 static int PrevBitmapHole, Mapsize = MTFTP_BITMAPSIZE; 138 static uchar ProhibitMcast, MasterClient; 139 static uchar Multicast; 140 static int Mcast_port; 141 static ulong TftpEndingBlock; /* can get 'last' block before done..*/ 142 143 static void parse_multicast_oack(char *pkt, int len); 144 145 static void 146 mcast_cleanup(void) 147 { 148 if (Mcast_addr) 149 eth_mcast_join(Mcast_addr, 0); 150 if (Bitmap) 151 free(Bitmap); 152 Bitmap = NULL; 153 Mcast_addr = Multicast = Mcast_port = 0; 154 TftpEndingBlock = -1; 155 } 156 157 #endif /* CONFIG_MCAST_TFTP */ 158 159 static inline void 160 store_block(int block, uchar *src, unsigned len) 161 { 162 ulong offset = block * TftpBlkSize + TftpBlockWrapOffset; 163 ulong newsize = offset + len; 164 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP 165 int i, rc = 0; 166 167 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { 168 /* start address in flash? */ 169 if (flash_info[i].flash_id == FLASH_UNKNOWN) 170 continue; 171 if (load_addr + offset >= flash_info[i].start[0]) { 172 rc = 1; 173 break; 174 } 175 } 176 177 if (rc) { /* Flash is destination for this packet */ 178 rc = flash_write((char *)src, (ulong)(load_addr+offset), len); 179 if (rc) { 180 flash_perror(rc); 181 net_set_state(NETLOOP_FAIL); 182 return; 183 } 184 } else 185 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */ 186 { 187 (void)memcpy((void *)(load_addr + offset), src, len); 188 } 189 #ifdef CONFIG_MCAST_TFTP 190 if (Multicast) 191 ext2_set_bit(block, Bitmap); 192 #endif 193 194 if (NetBootFileXferSize < newsize) 195 NetBootFileXferSize = newsize; 196 } 197 198 /* Clear our state ready for a new transfer */ 199 static void new_transfer(void) 200 { 201 TftpLastBlock = 0; 202 TftpBlockWrap = 0; 203 TftpBlockWrapOffset = 0; 204 #ifdef CONFIG_CMD_TFTPPUT 205 TftpFinalBlock = 0; 206 #endif 207 } 208 209 #ifdef CONFIG_CMD_TFTPPUT 210 /** 211 * Load the next block from memory to be sent over tftp. 212 * 213 * @param block Block number to send 214 * @param dst Destination buffer for data 215 * @param len Number of bytes in block (this one and every other) 216 * @return number of bytes loaded 217 */ 218 static int load_block(unsigned block, uchar *dst, unsigned len) 219 { 220 /* We may want to get the final block from the previous set */ 221 ulong offset = ((int)block - 1) * len + TftpBlockWrapOffset; 222 ulong tosend = len; 223 224 tosend = min(NetBootFileXferSize - offset, tosend); 225 (void)memcpy(dst, (void *)(save_addr + offset), tosend); 226 debug("%s: block=%d, offset=%ld, len=%d, tosend=%ld\n", __func__, 227 block, offset, len, tosend); 228 return tosend; 229 } 230 #endif 231 232 static void TftpSend(void); 233 static void TftpTimeout(void); 234 235 /**********************************************************************/ 236 237 static void show_block_marker(void) 238 { 239 #ifdef CONFIG_TFTP_TSIZE 240 if (TftpTsize) { 241 ulong pos = TftpBlock * TftpBlkSize + TftpBlockWrapOffset; 242 243 while (TftpNumchars < pos * 50 / TftpTsize) { 244 putc('#'); 245 TftpNumchars++; 246 } 247 } else 248 #endif 249 { 250 if (((TftpBlock - 1) % 10) == 0) 251 putc('#'); 252 else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) 253 puts("\n\t "); 254 } 255 } 256 257 /** 258 * restart the current transfer due to an error 259 * 260 * @param msg Message to print for user 261 */ 262 static void restart(const char *msg) 263 { 264 printf("\n%s; starting again\n", msg); 265 #ifdef CONFIG_MCAST_TFTP 266 mcast_cleanup(); 267 #endif 268 NetStartAgain(); 269 } 270 271 /* 272 * Check if the block number has wrapped, and update progress 273 * 274 * TODO: The egregious use of global variables in this file should be tidied. 275 */ 276 static void update_block_number(void) 277 { 278 /* 279 * RFC1350 specifies that the first data packet will 280 * have sequence number 1. If we receive a sequence 281 * number of 0 this means that there was a wrap 282 * around of the (16 bit) counter. 283 */ 284 if (TftpBlock == 0 && TftpLastBlock != 0) { 285 TftpBlockWrap++; 286 TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE; 287 TftpTimeoutCount = 0; /* we've done well, reset thhe timeout */ 288 } else { 289 show_block_marker(); 290 } 291 } 292 293 /* The TFTP get or put is complete */ 294 static void tftp_complete(void) 295 { 296 #ifdef CONFIG_TFTP_TSIZE 297 /* Print hash marks for the last packet received */ 298 while (TftpTsize && TftpNumchars < 49) { 299 putc('#'); 300 TftpNumchars++; 301 } 302 puts(" "); 303 print_size(TftpTsize, ""); 304 #endif 305 time_start = get_timer(time_start); 306 if (time_start > 0) { 307 puts("\n\t "); /* Line up with "Loading: " */ 308 print_size(NetBootFileXferSize / 309 time_start * 1000, "/s"); 310 } 311 puts("\ndone\n"); 312 net_set_state(NETLOOP_SUCCESS); 313 } 314 315 static void 316 TftpSend(void) 317 { 318 uchar *pkt; 319 uchar *xp; 320 int len = 0; 321 ushort *s; 322 323 #ifdef CONFIG_MCAST_TFTP 324 /* Multicast TFTP.. non-MasterClients do not ACK data. */ 325 if (Multicast 326 && (TftpState == STATE_DATA) 327 && (MasterClient == 0)) 328 return; 329 #endif 330 /* 331 * We will always be sending some sort of packet, so 332 * cobble together the packet headers now. 333 */ 334 pkt = NetTxPacket + NetEthHdrSize() + IP_UDP_HDR_SIZE; 335 336 switch (TftpState) { 337 case STATE_SEND_RRQ: 338 case STATE_SEND_WRQ: 339 xp = pkt; 340 s = (ushort *)pkt; 341 #ifdef CONFIG_CMD_TFTPPUT 342 *s++ = htons(TftpState == STATE_SEND_RRQ ? TFTP_RRQ : 343 TFTP_WRQ); 344 #else 345 *s++ = htons(TFTP_RRQ); 346 #endif 347 pkt = (uchar *)s; 348 strcpy((char *)pkt, tftp_filename); 349 pkt += strlen(tftp_filename) + 1; 350 strcpy((char *)pkt, "octet"); 351 pkt += 5 /*strlen("octet")*/ + 1; 352 strcpy((char *)pkt, "timeout"); 353 pkt += 7 /*strlen("timeout")*/ + 1; 354 sprintf((char *)pkt, "%lu", TftpTimeoutMSecs / 1000); 355 debug("send option \"timeout %s\"\n", (char *)pkt); 356 pkt += strlen((char *)pkt) + 1; 357 #ifdef CONFIG_TFTP_TSIZE 358 pkt += sprintf((char *)pkt, "tsize%c%lu%c", 359 0, NetBootFileXferSize, 0); 360 #endif 361 /* try for more effic. blk size */ 362 pkt += sprintf((char *)pkt, "blksize%c%d%c", 363 0, TftpBlkSizeOption, 0); 364 #ifdef CONFIG_MCAST_TFTP 365 /* Check all preconditions before even trying the option */ 366 if (!ProhibitMcast) { 367 Bitmap = malloc(Mapsize); 368 if (Bitmap && eth_get_dev()->mcast) { 369 free(Bitmap); 370 Bitmap = NULL; 371 pkt += sprintf((char *)pkt, "multicast%c%c", 372 0, 0); 373 } 374 } 375 #endif /* CONFIG_MCAST_TFTP */ 376 len = pkt - xp; 377 break; 378 379 case STATE_OACK: 380 #ifdef CONFIG_MCAST_TFTP 381 /* My turn! Start at where I need blocks I missed.*/ 382 if (Multicast) 383 TftpBlock = ext2_find_next_zero_bit(Bitmap, 384 (Mapsize*8), 0); 385 /*..falling..*/ 386 #endif 387 388 case STATE_RECV_WRQ: 389 case STATE_DATA: 390 xp = pkt; 391 s = (ushort *)pkt; 392 s[0] = htons(TFTP_ACK); 393 s[1] = htons(TftpBlock); 394 pkt = (uchar *)(s + 2); 395 #ifdef CONFIG_CMD_TFTPPUT 396 if (TftpWriting) { 397 int toload = TftpBlkSize; 398 int loaded = load_block(TftpBlock, pkt, toload); 399 400 s[0] = htons(TFTP_DATA); 401 pkt += loaded; 402 TftpFinalBlock = (loaded < toload); 403 } 404 #endif 405 len = pkt - xp; 406 break; 407 408 case STATE_TOO_LARGE: 409 xp = pkt; 410 s = (ushort *)pkt; 411 *s++ = htons(TFTP_ERROR); 412 *s++ = htons(3); 413 414 pkt = (uchar *)s; 415 strcpy((char *)pkt, "File too large"); 416 pkt += 14 /*strlen("File too large")*/ + 1; 417 len = pkt - xp; 418 break; 419 420 case STATE_BAD_MAGIC: 421 xp = pkt; 422 s = (ushort *)pkt; 423 *s++ = htons(TFTP_ERROR); 424 *s++ = htons(2); 425 pkt = (uchar *)s; 426 strcpy((char *)pkt, "File has bad magic"); 427 pkt += 18 /*strlen("File has bad magic")*/ + 1; 428 len = pkt - xp; 429 break; 430 } 431 432 NetSendUDPPacket(NetServerEther, TftpRemoteIP, TftpRemotePort, 433 TftpOurPort, len); 434 } 435 436 #ifdef CONFIG_CMD_TFTPPUT 437 static void icmp_handler(unsigned type, unsigned code, unsigned dest, 438 IPaddr_t sip, unsigned src, uchar *pkt, unsigned len) 439 { 440 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) { 441 /* Oh dear the other end has gone away */ 442 restart("TFTP server died"); 443 } 444 } 445 #endif 446 447 static void 448 TftpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, 449 unsigned len) 450 { 451 __be16 proto; 452 __be16 *s; 453 int i; 454 455 if (dest != TftpOurPort) { 456 #ifdef CONFIG_MCAST_TFTP 457 if (Multicast 458 && (!Mcast_port || (dest != Mcast_port))) 459 #endif 460 return; 461 } 462 if (TftpState != STATE_SEND_RRQ && src != TftpRemotePort && 463 TftpState != STATE_RECV_WRQ && TftpState != STATE_SEND_WRQ) 464 return; 465 466 if (len < 2) 467 return; 468 len -= 2; 469 /* warning: don't use increment (++) in ntohs() macros!! */ 470 s = (__be16 *)pkt; 471 proto = *s++; 472 pkt = (uchar *)s; 473 switch (ntohs(proto)) { 474 475 case TFTP_RRQ: 476 break; 477 478 case TFTP_ACK: 479 #ifdef CONFIG_CMD_TFTPPUT 480 if (TftpWriting) { 481 if (TftpFinalBlock) { 482 tftp_complete(); 483 } else { 484 /* 485 * Move to the next block. We want our block 486 * count to wrap just like the other end! 487 */ 488 int block = ntohs(*s); 489 int ack_ok = (TftpBlock == block); 490 491 TftpBlock = (unsigned short)(block + 1); 492 update_block_number(); 493 if (ack_ok) 494 TftpSend(); /* Send next data block */ 495 } 496 } 497 #endif 498 break; 499 500 default: 501 break; 502 503 #ifdef CONFIG_CMD_TFTPSRV 504 case TFTP_WRQ: 505 debug("Got WRQ\n"); 506 TftpRemoteIP = sip; 507 TftpRemotePort = src; 508 TftpOurPort = 1024 + (get_timer(0) % 3072); 509 new_transfer(); 510 TftpSend(); /* Send ACK(0) */ 511 break; 512 #endif 513 514 case TFTP_OACK: 515 debug("Got OACK: %s %s\n", 516 pkt, 517 pkt + strlen((char *)pkt) + 1); 518 TftpState = STATE_OACK; 519 TftpRemotePort = src; 520 /* 521 * Check for 'blksize' option. 522 * Careful: "i" is signed, "len" is unsigned, thus 523 * something like "len-8" may give a *huge* number 524 */ 525 for (i = 0; i+8 < len; i++) { 526 if (strcmp((char *)pkt+i, "blksize") == 0) { 527 TftpBlkSize = (unsigned short) 528 simple_strtoul((char *)pkt+i+8, NULL, 529 10); 530 debug("Blocksize ack: %s, %d\n", 531 (char *)pkt+i+8, TftpBlkSize); 532 } 533 #ifdef CONFIG_TFTP_TSIZE 534 if (strcmp((char *)pkt+i, "tsize") == 0) { 535 TftpTsize = simple_strtoul((char *)pkt+i+6, 536 NULL, 10); 537 debug("size = %s, %d\n", 538 (char *)pkt+i+6, TftpTsize); 539 } 540 #endif 541 } 542 #ifdef CONFIG_MCAST_TFTP 543 parse_multicast_oack((char *)pkt, len-1); 544 if ((Multicast) && (!MasterClient)) 545 TftpState = STATE_DATA; /* passive.. */ 546 else 547 #endif 548 #ifdef CONFIG_CMD_TFTPPUT 549 if (TftpWriting) { 550 /* Get ready to send the first block */ 551 TftpState = STATE_DATA; 552 TftpBlock++; 553 } 554 #endif 555 TftpSend(); /* Send ACK or first data block */ 556 break; 557 case TFTP_DATA: 558 if (len < 2) 559 return; 560 len -= 2; 561 TftpBlock = ntohs(*(__be16 *)pkt); 562 563 update_block_number(); 564 565 if (TftpState == STATE_SEND_RRQ) 566 debug("Server did not acknowledge timeout option!\n"); 567 568 if (TftpState == STATE_SEND_RRQ || TftpState == STATE_OACK || 569 TftpState == STATE_RECV_WRQ) { 570 /* first block received */ 571 TftpState = STATE_DATA; 572 TftpRemotePort = src; 573 new_transfer(); 574 575 #ifdef CONFIG_MCAST_TFTP 576 if (Multicast) { /* start!=1 common if mcast */ 577 TftpLastBlock = TftpBlock - 1; 578 } else 579 #endif 580 if (TftpBlock != 1) { /* Assertion */ 581 printf("\nTFTP error: " 582 "First block is not block 1 (%ld)\n" 583 "Starting again\n\n", 584 TftpBlock); 585 NetStartAgain(); 586 break; 587 } 588 } 589 590 if (TftpBlock == TftpLastBlock) { 591 /* 592 * Same block again; ignore it. 593 */ 594 break; 595 } 596 597 TftpLastBlock = TftpBlock; 598 TftpTimeoutCountMax = TIMEOUT_COUNT; 599 NetSetTimeout(TftpTimeoutMSecs, TftpTimeout); 600 601 store_block(TftpBlock - 1, pkt + 2, len); 602 603 /* 604 * Acknowledge the block just received, which will prompt 605 * the remote for the next one. 606 */ 607 #ifdef CONFIG_MCAST_TFTP 608 /* if I am the MasterClient, actively calculate what my next 609 * needed block is; else I'm passive; not ACKING 610 */ 611 if (Multicast) { 612 if (len < TftpBlkSize) { 613 TftpEndingBlock = TftpBlock; 614 } else if (MasterClient) { 615 TftpBlock = PrevBitmapHole = 616 ext2_find_next_zero_bit( 617 Bitmap, 618 (Mapsize*8), 619 PrevBitmapHole); 620 if (TftpBlock > ((Mapsize*8) - 1)) { 621 printf("tftpfile too big\n"); 622 /* try to double it and retry */ 623 Mapsize <<= 1; 624 mcast_cleanup(); 625 NetStartAgain(); 626 return; 627 } 628 TftpLastBlock = TftpBlock; 629 } 630 } 631 #endif 632 TftpSend(); 633 634 #ifdef CONFIG_MCAST_TFTP 635 if (Multicast) { 636 if (MasterClient && (TftpBlock >= TftpEndingBlock)) { 637 puts("\nMulticast tftp done\n"); 638 mcast_cleanup(); 639 net_set_state(NETLOOP_SUCCESS); 640 } 641 } else 642 #endif 643 if (len < TftpBlkSize) 644 tftp_complete(); 645 break; 646 647 case TFTP_ERROR: 648 printf("\nTFTP error: '%s' (%d)\n", 649 pkt + 2, ntohs(*(__be16 *)pkt)); 650 651 switch (ntohs(*(__be16 *)pkt)) { 652 case TFTP_ERR_FILE_NOT_FOUND: 653 case TFTP_ERR_ACCESS_DENIED: 654 puts("Not retrying...\n"); 655 eth_halt(); 656 net_set_state(NETLOOP_FAIL); 657 break; 658 case TFTP_ERR_UNDEFINED: 659 case TFTP_ERR_DISK_FULL: 660 case TFTP_ERR_UNEXPECTED_OPCODE: 661 case TFTP_ERR_UNKNOWN_TRANSFER_ID: 662 case TFTP_ERR_FILE_ALREADY_EXISTS: 663 default: 664 puts("Starting again\n\n"); 665 #ifdef CONFIG_MCAST_TFTP 666 mcast_cleanup(); 667 #endif 668 NetStartAgain(); 669 break; 670 } 671 break; 672 } 673 } 674 675 676 static void 677 TftpTimeout(void) 678 { 679 if (++TftpTimeoutCount > TftpTimeoutCountMax) { 680 restart("Retry count exceeded"); 681 } else { 682 puts("T "); 683 NetSetTimeout(TftpTimeoutMSecs, TftpTimeout); 684 if (TftpState != STATE_RECV_WRQ) 685 TftpSend(); 686 } 687 } 688 689 690 void TftpStart(enum proto_t protocol) 691 { 692 char *ep; /* Environment pointer */ 693 694 /* 695 * Allow the user to choose TFTP blocksize and timeout. 696 * TFTP protocol has a minimal timeout of 1 second. 697 */ 698 ep = getenv("tftpblocksize"); 699 if (ep != NULL) 700 TftpBlkSizeOption = simple_strtol(ep, NULL, 10); 701 702 ep = getenv("tftptimeout"); 703 if (ep != NULL) 704 TftpTimeoutMSecs = simple_strtol(ep, NULL, 10); 705 706 if (TftpTimeoutMSecs < 1000) { 707 printf("TFTP timeout (%ld ms) too low, " 708 "set minimum = 1000 ms\n", 709 TftpTimeoutMSecs); 710 TftpTimeoutMSecs = 1000; 711 } 712 713 debug("TFTP blocksize = %i, timeout = %ld ms\n", 714 TftpBlkSizeOption, TftpTimeoutMSecs); 715 716 TftpRemoteIP = NetServerIP; 717 if (BootFile[0] == '\0') { 718 sprintf(default_filename, "%02X%02X%02X%02X.img", 719 NetOurIP & 0xFF, 720 (NetOurIP >> 8) & 0xFF, 721 (NetOurIP >> 16) & 0xFF, 722 (NetOurIP >> 24) & 0xFF); 723 724 strncpy(tftp_filename, default_filename, MAX_LEN); 725 tftp_filename[MAX_LEN-1] = 0; 726 727 printf("*** Warning: no boot file name; using '%s'\n", 728 tftp_filename); 729 } else { 730 char *p = strchr(BootFile, ':'); 731 732 if (p == NULL) { 733 strncpy(tftp_filename, BootFile, MAX_LEN); 734 tftp_filename[MAX_LEN-1] = 0; 735 } else { 736 TftpRemoteIP = string_to_ip(BootFile); 737 strncpy(tftp_filename, p + 1, MAX_LEN); 738 tftp_filename[MAX_LEN-1] = 0; 739 } 740 } 741 742 printf("Using %s device\n", eth_get_name()); 743 printf("TFTP %s server %pI4; our IP address is %pI4", 744 #ifdef CONFIG_CMD_TFTPPUT 745 protocol == TFTPPUT ? "to" : "from", 746 #else 747 "from", 748 #endif 749 &TftpRemoteIP, &NetOurIP); 750 751 /* Check if we need to send across this subnet */ 752 if (NetOurGatewayIP && NetOurSubnetMask) { 753 IPaddr_t OurNet = NetOurIP & NetOurSubnetMask; 754 IPaddr_t RemoteNet = TftpRemoteIP & NetOurSubnetMask; 755 756 if (OurNet != RemoteNet) 757 printf("; sending through gateway %pI4", 758 &NetOurGatewayIP); 759 } 760 putc('\n'); 761 762 printf("Filename '%s'.", tftp_filename); 763 764 if (NetBootFileSize) { 765 printf(" Size is 0x%x Bytes = ", NetBootFileSize<<9); 766 print_size(NetBootFileSize<<9, ""); 767 } 768 769 putc('\n'); 770 #ifdef CONFIG_CMD_TFTPPUT 771 TftpWriting = (protocol == TFTPPUT); 772 if (TftpWriting) { 773 printf("Save address: 0x%lx\n", save_addr); 774 printf("Save size: 0x%lx\n", save_size); 775 NetBootFileXferSize = save_size; 776 puts("Saving: *\b"); 777 TftpState = STATE_SEND_WRQ; 778 new_transfer(); 779 } else 780 #endif 781 { 782 printf("Load address: 0x%lx\n", load_addr); 783 puts("Loading: *\b"); 784 TftpState = STATE_SEND_RRQ; 785 } 786 787 time_start = get_timer(0); 788 TftpTimeoutCountMax = TftpRRQTimeoutCountMax; 789 790 NetSetTimeout(TftpTimeoutMSecs, TftpTimeout); 791 net_set_udp_handler(TftpHandler); 792 #ifdef CONFIG_CMD_TFTPPUT 793 net_set_icmp_handler(icmp_handler); 794 #endif 795 TftpRemotePort = WELL_KNOWN_PORT; 796 TftpTimeoutCount = 0; 797 /* Use a pseudo-random port unless a specific port is set */ 798 TftpOurPort = 1024 + (get_timer(0) % 3072); 799 800 #ifdef CONFIG_TFTP_PORT 801 ep = getenv("tftpdstp"); 802 if (ep != NULL) 803 TftpRemotePort = simple_strtol(ep, NULL, 10); 804 ep = getenv("tftpsrcp"); 805 if (ep != NULL) 806 TftpOurPort = simple_strtol(ep, NULL, 10); 807 #endif 808 TftpBlock = 0; 809 810 /* zero out server ether in case the server ip has changed */ 811 memset(NetServerEther, 0, 6); 812 /* Revert TftpBlkSize to dflt */ 813 TftpBlkSize = TFTP_BLOCK_SIZE; 814 #ifdef CONFIG_MCAST_TFTP 815 mcast_cleanup(); 816 #endif 817 #ifdef CONFIG_TFTP_TSIZE 818 TftpTsize = 0; 819 TftpNumchars = 0; 820 #endif 821 822 TftpSend(); 823 } 824 825 #ifdef CONFIG_CMD_TFTPSRV 826 void 827 TftpStartServer(void) 828 { 829 tftp_filename[0] = 0; 830 831 printf("Using %s device\n", eth_get_name()); 832 printf("Listening for TFTP transfer on %pI4\n", &NetOurIP); 833 printf("Load address: 0x%lx\n", load_addr); 834 835 puts("Loading: *\b"); 836 837 TftpTimeoutCountMax = TIMEOUT_COUNT; 838 TftpTimeoutCount = 0; 839 TftpTimeoutMSecs = TIMEOUT; 840 NetSetTimeout(TftpTimeoutMSecs, TftpTimeout); 841 842 /* Revert TftpBlkSize to dflt */ 843 TftpBlkSize = TFTP_BLOCK_SIZE; 844 TftpBlock = 0; 845 TftpOurPort = WELL_KNOWN_PORT; 846 847 #ifdef CONFIG_TFTP_TSIZE 848 TftpTsize = 0; 849 TftpNumchars = 0; 850 #endif 851 852 TftpState = STATE_RECV_WRQ; 853 net_set_udp_handler(TftpHandler); 854 855 /* zero out server ether in case the server ip has changed */ 856 memset(NetServerEther, 0, 6); 857 } 858 #endif /* CONFIG_CMD_TFTPSRV */ 859 860 #ifdef CONFIG_MCAST_TFTP 861 /* Credits: atftp project. 862 */ 863 864 /* pick up BcastAddr, Port, and whether I am [now] the master-client. * 865 * Frame: 866 * +-------+-----------+---+-------~~-------+---+ 867 * | opc | multicast | 0 | addr, port, mc | 0 | 868 * +-------+-----------+---+-------~~-------+---+ 869 * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then 870 * I am the new master-client so must send ACKs to DataBlocks. If I am not 871 * master-client, I'm a passive client, gathering what DataBlocks I may and 872 * making note of which ones I got in my bitmask. 873 * In theory, I never go from master->passive.. 874 * .. this comes in with pkt already pointing just past opc 875 */ 876 static void parse_multicast_oack(char *pkt, int len) 877 { 878 int i; 879 IPaddr_t addr; 880 char *mc_adr, *port, *mc; 881 882 mc_adr = port = mc = NULL; 883 /* march along looking for 'multicast\0', which has to start at least 884 * 14 bytes back from the end. 885 */ 886 for (i = 0; i < len-14; i++) 887 if (strcmp(pkt+i, "multicast") == 0) 888 break; 889 if (i >= (len-14)) /* non-Multicast OACK, ign. */ 890 return; 891 892 i += 10; /* strlen multicast */ 893 mc_adr = pkt+i; 894 for (; i < len; i++) { 895 if (*(pkt+i) == ',') { 896 *(pkt+i) = '\0'; 897 if (port) { 898 mc = pkt+i+1; 899 break; 900 } else { 901 port = pkt+i+1; 902 } 903 } 904 } 905 if (!port || !mc_adr || !mc) 906 return; 907 if (Multicast && MasterClient) { 908 printf("I got a OACK as master Client, WRONG!\n"); 909 return; 910 } 911 /* ..I now accept packets destined for this MCAST addr, port */ 912 if (!Multicast) { 913 if (Bitmap) { 914 printf("Internal failure! no mcast.\n"); 915 free(Bitmap); 916 Bitmap = NULL; 917 ProhibitMcast = 1; 918 return ; 919 } 920 /* I malloc instead of pre-declare; so that if the file ends 921 * up being too big for this bitmap I can retry 922 */ 923 Bitmap = malloc(Mapsize); 924 if (!Bitmap) { 925 printf("No Bitmap, no multicast. Sorry.\n"); 926 ProhibitMcast = 1; 927 return; 928 } 929 memset(Bitmap, 0, Mapsize); 930 PrevBitmapHole = 0; 931 Multicast = 1; 932 } 933 addr = string_to_ip(mc_adr); 934 if (Mcast_addr != addr) { 935 if (Mcast_addr) 936 eth_mcast_join(Mcast_addr, 0); 937 Mcast_addr = addr; 938 if (eth_mcast_join(Mcast_addr, 1)) { 939 printf("Fail to set mcast, revert to TFTP\n"); 940 ProhibitMcast = 1; 941 mcast_cleanup(); 942 NetStartAgain(); 943 } 944 } 945 MasterClient = (unsigned char)simple_strtoul((char *)mc, NULL, 10); 946 Mcast_port = (unsigned short)simple_strtoul(port, NULL, 10); 947 printf("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient); 948 return; 949 } 950 951 #endif /* Multicast TFTP */ 952