1 /* 2 * Copyright 1994, 1995, 2000 Neil Russell. 3 * (See License) 4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de 5 */ 6 7 #include <common.h> 8 #include <command.h> 9 #include <net.h> 10 #include "tftp.h" 11 #include "bootp.h" 12 13 #if defined(CONFIG_CMD_NET) 14 15 #define WELL_KNOWN_PORT 69 /* Well known TFTP port # */ 16 #define TIMEOUT 5000UL /* Millisecs to timeout for lost pkt */ 17 #ifndef CONFIG_NET_RETRY_COUNT 18 # define TIMEOUT_COUNT 10 /* # of timeouts before giving up */ 19 #else 20 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2) 21 #endif 22 /* (for checking the image size) */ 23 #define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */ 24 25 /* 26 * TFTP operations. 27 */ 28 #define TFTP_RRQ 1 29 #define TFTP_WRQ 2 30 #define TFTP_DATA 3 31 #define TFTP_ACK 4 32 #define TFTP_ERROR 5 33 #define TFTP_OACK 6 34 35 static ulong TftpTimeoutMSecs = TIMEOUT; 36 static int TftpTimeoutCountMax = TIMEOUT_COUNT; 37 38 /* 39 * These globals govern the timeout behavior when attempting a connection to a 40 * TFTP server. TftpRRQTimeoutMSecs specifies the number of milliseconds to 41 * wait for the server to respond to initial connection. Second global, 42 * TftpRRQTimeoutCountMax, gives the number of such connection retries. 43 * TftpRRQTimeoutCountMax must be non-negative and TftpRRQTimeoutMSecs must be 44 * positive. The globals are meant to be set (and restored) by code needing 45 * non-standard timeout behavior when initiating a TFTP transfer. 46 */ 47 ulong TftpRRQTimeoutMSecs = TIMEOUT; 48 int TftpRRQTimeoutCountMax = TIMEOUT_COUNT; 49 50 static IPaddr_t TftpServerIP; 51 static int TftpServerPort; /* The UDP port at their end */ 52 static int TftpOurPort; /* The UDP port at our end */ 53 static int TftpTimeoutCount; 54 static ulong TftpBlock; /* packet sequence number */ 55 static ulong TftpLastBlock; /* last packet sequence number received */ 56 static ulong TftpBlockWrap; /* count of sequence number wraparounds */ 57 static ulong TftpBlockWrapOffset; /* memory offset due to wrapping */ 58 static int TftpState; 59 #ifdef CONFIG_TFTP_TSIZE 60 static int TftpTsize; /* The file size reported by the server */ 61 static short TftpNumchars; /* The number of hashes we printed */ 62 #endif 63 64 #define STATE_RRQ 1 65 #define STATE_DATA 2 66 #define STATE_TOO_LARGE 3 67 #define STATE_BAD_MAGIC 4 68 #define STATE_OACK 5 69 70 #define TFTP_BLOCK_SIZE 512 /* default TFTP block size */ 71 #define TFTP_SEQUENCE_SIZE ((ulong)(1<<16)) /* sequence number is 16 bit */ 72 73 #define DEFAULT_NAME_LEN (8 + 4 + 1) 74 static char default_filename[DEFAULT_NAME_LEN]; 75 76 #ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN 77 #define MAX_LEN 128 78 #else 79 #define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN 80 #endif 81 82 static char tftp_filename[MAX_LEN]; 83 84 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP 85 extern flash_info_t flash_info[]; 86 #endif 87 88 /* 512 is poor choice for ethernet, MTU is typically 1500. 89 * Minus eth.hdrs thats 1468. Can get 2x better throughput with 90 * almost-MTU block sizes. At least try... fall back to 512 if need be. 91 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file) 92 */ 93 #ifdef CONFIG_TFTP_BLOCKSIZE 94 #define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE 95 #else 96 #define TFTP_MTU_BLOCKSIZE 1468 97 #endif 98 99 static unsigned short TftpBlkSize=TFTP_BLOCK_SIZE; 100 static unsigned short TftpBlkSizeOption=TFTP_MTU_BLOCKSIZE; 101 102 #ifdef CONFIG_MCAST_TFTP 103 #include <malloc.h> 104 #define MTFTP_BITMAPSIZE 0x1000 105 static unsigned *Bitmap; 106 static int PrevBitmapHole,Mapsize=MTFTP_BITMAPSIZE; 107 static uchar ProhibitMcast=0, MasterClient=0; 108 static uchar Multicast=0; 109 extern IPaddr_t Mcast_addr; 110 static int Mcast_port; 111 static ulong TftpEndingBlock; /* can get 'last' block before done..*/ 112 113 static void parse_multicast_oack(char *pkt,int len); 114 115 static void 116 mcast_cleanup(void) 117 { 118 if (Mcast_addr) eth_mcast_join(Mcast_addr, 0); 119 if (Bitmap) free(Bitmap); 120 Bitmap=NULL; 121 Mcast_addr = Multicast = Mcast_port = 0; 122 TftpEndingBlock = -1; 123 } 124 125 #endif /* CONFIG_MCAST_TFTP */ 126 127 static __inline__ void 128 store_block (unsigned block, uchar * src, unsigned len) 129 { 130 ulong offset = block * TftpBlkSize + TftpBlockWrapOffset; 131 ulong newsize = offset + len; 132 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP 133 int i, rc = 0; 134 135 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++) { 136 /* start address in flash? */ 137 if (flash_info[i].flash_id == FLASH_UNKNOWN) 138 continue; 139 if (load_addr + offset >= flash_info[i].start[0]) { 140 rc = 1; 141 break; 142 } 143 } 144 145 if (rc) { /* Flash is destination for this packet */ 146 rc = flash_write ((char *)src, (ulong)(load_addr+offset), len); 147 if (rc) { 148 flash_perror (rc); 149 NetState = NETLOOP_FAIL; 150 return; 151 } 152 } 153 else 154 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */ 155 { 156 (void)memcpy((void *)(load_addr + offset), src, len); 157 } 158 #ifdef CONFIG_MCAST_TFTP 159 if (Multicast) 160 ext2_set_bit(block, Bitmap); 161 #endif 162 163 if (NetBootFileXferSize < newsize) 164 NetBootFileXferSize = newsize; 165 } 166 167 static void TftpSend (void); 168 static void TftpTimeout (void); 169 170 /**********************************************************************/ 171 172 static void 173 TftpSend (void) 174 { 175 volatile uchar * pkt; 176 volatile uchar * xp; 177 int len = 0; 178 volatile ushort *s; 179 180 #ifdef CONFIG_MCAST_TFTP 181 /* Multicast TFTP.. non-MasterClients do not ACK data. */ 182 if (Multicast 183 && (TftpState == STATE_DATA) 184 && (MasterClient == 0)) 185 return; 186 #endif 187 /* 188 * We will always be sending some sort of packet, so 189 * cobble together the packet headers now. 190 */ 191 pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE; 192 193 switch (TftpState) { 194 195 case STATE_RRQ: 196 xp = pkt; 197 s = (ushort *)pkt; 198 *s++ = htons(TFTP_RRQ); 199 pkt = (uchar *)s; 200 strcpy ((char *)pkt, tftp_filename); 201 pkt += strlen(tftp_filename) + 1; 202 strcpy ((char *)pkt, "octet"); 203 pkt += 5 /*strlen("octet")*/ + 1; 204 strcpy ((char *)pkt, "timeout"); 205 pkt += 7 /*strlen("timeout")*/ + 1; 206 sprintf((char *)pkt, "%lu", TIMEOUT / 1000); 207 debug("send option \"timeout %s\"\n", (char *)pkt); 208 pkt += strlen((char *)pkt) + 1; 209 #ifdef CONFIG_TFTP_TSIZE 210 memcpy((char *)pkt, "tsize\0000\0", 8); 211 pkt += 8; 212 #endif 213 /* try for more effic. blk size */ 214 pkt += sprintf((char *)pkt,"blksize%c%d%c", 215 0,TftpBlkSizeOption,0); 216 #ifdef CONFIG_MCAST_TFTP 217 /* Check all preconditions before even trying the option */ 218 if (!ProhibitMcast 219 && (Bitmap=malloc(Mapsize)) 220 && eth_get_dev()->mcast) { 221 free(Bitmap); 222 Bitmap=NULL; 223 pkt += sprintf((char *)pkt,"multicast%c%c",0,0); 224 } 225 #endif /* CONFIG_MCAST_TFTP */ 226 len = pkt - xp; 227 break; 228 229 case STATE_OACK: 230 #ifdef CONFIG_MCAST_TFTP 231 /* My turn! Start at where I need blocks I missed.*/ 232 if (Multicast) 233 TftpBlock=ext2_find_next_zero_bit(Bitmap,(Mapsize*8),0); 234 /*..falling..*/ 235 #endif 236 case STATE_DATA: 237 xp = pkt; 238 s = (ushort *)pkt; 239 *s++ = htons(TFTP_ACK); 240 *s++ = htons(TftpBlock); 241 pkt = (uchar *)s; 242 len = pkt - xp; 243 break; 244 245 case STATE_TOO_LARGE: 246 xp = pkt; 247 s = (ushort *)pkt; 248 *s++ = htons(TFTP_ERROR); 249 *s++ = htons(3); 250 pkt = (uchar *)s; 251 strcpy ((char *)pkt, "File too large"); 252 pkt += 14 /*strlen("File too large")*/ + 1; 253 len = pkt - xp; 254 break; 255 256 case STATE_BAD_MAGIC: 257 xp = pkt; 258 s = (ushort *)pkt; 259 *s++ = htons(TFTP_ERROR); 260 *s++ = htons(2); 261 pkt = (uchar *)s; 262 strcpy ((char *)pkt, "File has bad magic"); 263 pkt += 18 /*strlen("File has bad magic")*/ + 1; 264 len = pkt - xp; 265 break; 266 } 267 268 NetSendUDPPacket(NetServerEther, TftpServerIP, TftpServerPort, TftpOurPort, len); 269 } 270 271 272 static void 273 TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) 274 { 275 ushort proto; 276 ushort *s; 277 int i; 278 279 if (dest != TftpOurPort) { 280 #ifdef CONFIG_MCAST_TFTP 281 if (Multicast 282 && (!Mcast_port || (dest != Mcast_port))) 283 #endif 284 return; 285 } 286 if (TftpState != STATE_RRQ && src != TftpServerPort) { 287 return; 288 } 289 290 if (len < 2) { 291 return; 292 } 293 len -= 2; 294 /* warning: don't use increment (++) in ntohs() macros!! */ 295 s = (ushort *)pkt; 296 proto = *s++; 297 pkt = (uchar *)s; 298 switch (ntohs(proto)) { 299 300 case TFTP_RRQ: 301 case TFTP_WRQ: 302 case TFTP_ACK: 303 break; 304 default: 305 break; 306 307 case TFTP_OACK: 308 debug("Got OACK: %s %s\n", 309 pkt, 310 pkt + strlen((char *)pkt) + 1); 311 TftpState = STATE_OACK; 312 TftpServerPort = src; 313 /* 314 * Check for 'blksize' option. 315 * Careful: "i" is signed, "len" is unsigned, thus 316 * something like "len-8" may give a *huge* number 317 */ 318 for (i=0; i+8<len; i++) { 319 if (strcmp ((char*)pkt+i,"blksize") == 0) { 320 TftpBlkSize = (unsigned short) 321 simple_strtoul((char*)pkt+i+8,NULL,10); 322 debug("Blocksize ack: %s, %d\n", 323 (char*)pkt+i+8,TftpBlkSize); 324 } 325 #ifdef CONFIG_TFTP_TSIZE 326 if (strcmp ((char*)pkt+i,"tsize") == 0) { 327 TftpTsize = simple_strtoul((char*)pkt+i+6,NULL,10); 328 debug("size = %s, %d\n", 329 (char*)pkt+i+6, TftpTsize); 330 } 331 #endif 332 } 333 #ifdef CONFIG_MCAST_TFTP 334 parse_multicast_oack((char *)pkt,len-1); 335 if ((Multicast) && (!MasterClient)) 336 TftpState = STATE_DATA; /* passive.. */ 337 else 338 #endif 339 TftpSend (); /* Send ACK */ 340 break; 341 case TFTP_DATA: 342 if (len < 2) 343 return; 344 len -= 2; 345 TftpBlock = ntohs(*(ushort *)pkt); 346 347 /* 348 * RFC1350 specifies that the first data packet will 349 * have sequence number 1. If we receive a sequence 350 * number of 0 this means that there was a wrap 351 * around of the (16 bit) counter. 352 */ 353 if (TftpBlock == 0) { 354 TftpBlockWrap++; 355 TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE; 356 printf ("\n\t %lu MB received\n\t ", TftpBlockWrapOffset>>20); 357 } 358 #ifdef CONFIG_TFTP_TSIZE 359 else if (TftpTsize) { 360 while (TftpNumchars < NetBootFileXferSize * 50 / TftpTsize) { 361 putc('#'); 362 TftpNumchars++; 363 } 364 } 365 #endif 366 else { 367 if (((TftpBlock - 1) % 10) == 0) { 368 putc ('#'); 369 } else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) { 370 puts ("\n\t "); 371 } 372 } 373 374 if (TftpState == STATE_RRQ) 375 debug("Server did not acknowledge timeout option!\n"); 376 377 if (TftpState == STATE_RRQ || TftpState == STATE_OACK) { 378 /* first block received */ 379 TftpState = STATE_DATA; 380 TftpServerPort = src; 381 TftpLastBlock = 0; 382 TftpBlockWrap = 0; 383 TftpBlockWrapOffset = 0; 384 385 #ifdef CONFIG_MCAST_TFTP 386 if (Multicast) { /* start!=1 common if mcast */ 387 TftpLastBlock = TftpBlock - 1; 388 } else 389 #endif 390 if (TftpBlock != 1) { /* Assertion */ 391 printf ("\nTFTP error: " 392 "First block is not block 1 (%ld)\n" 393 "Starting again\n\n", 394 TftpBlock); 395 NetStartAgain (); 396 break; 397 } 398 } 399 400 if (TftpBlock == TftpLastBlock) { 401 /* 402 * Same block again; ignore it. 403 */ 404 break; 405 } 406 407 TftpLastBlock = TftpBlock; 408 TftpTimeoutMSecs = TIMEOUT; 409 TftpTimeoutCountMax = TIMEOUT_COUNT; 410 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); 411 412 store_block (TftpBlock - 1, pkt + 2, len); 413 414 /* 415 * Acknoledge the block just received, which will prompt 416 * the server for the next one. 417 */ 418 #ifdef CONFIG_MCAST_TFTP 419 /* if I am the MasterClient, actively calculate what my next 420 * needed block is; else I'm passive; not ACKING 421 */ 422 if (Multicast) { 423 if (len < TftpBlkSize) { 424 TftpEndingBlock = TftpBlock; 425 } else if (MasterClient) { 426 TftpBlock = PrevBitmapHole = 427 ext2_find_next_zero_bit( 428 Bitmap, 429 (Mapsize*8), 430 PrevBitmapHole); 431 if (TftpBlock > ((Mapsize*8) - 1)) { 432 printf ("tftpfile too big\n"); 433 /* try to double it and retry */ 434 Mapsize<<=1; 435 mcast_cleanup(); 436 NetStartAgain (); 437 return; 438 } 439 TftpLastBlock = TftpBlock; 440 } 441 } 442 #endif 443 TftpSend (); 444 445 #ifdef CONFIG_MCAST_TFTP 446 if (Multicast) { 447 if (MasterClient && (TftpBlock >= TftpEndingBlock)) { 448 puts ("\nMulticast tftp done\n"); 449 mcast_cleanup(); 450 NetState = NETLOOP_SUCCESS; 451 } 452 } 453 else 454 #endif 455 if (len < TftpBlkSize) { 456 /* 457 * We received the whole thing. Try to 458 * run it. 459 */ 460 #ifdef CONFIG_TFTP_TSIZE 461 /* Print out the hash marks for the last packet received */ 462 while (TftpTsize && TftpNumchars < 49) { 463 putc('#'); 464 TftpNumchars++; 465 } 466 #endif 467 puts ("\ndone\n"); 468 NetState = NETLOOP_SUCCESS; 469 } 470 break; 471 472 case TFTP_ERROR: 473 printf ("\nTFTP error: '%s' (%d)\n", 474 pkt + 2, ntohs(*(ushort *)pkt)); 475 puts ("Starting again\n\n"); 476 #ifdef CONFIG_MCAST_TFTP 477 mcast_cleanup(); 478 #endif 479 NetStartAgain (); 480 break; 481 } 482 } 483 484 485 static void 486 TftpTimeout (void) 487 { 488 if (++TftpTimeoutCount > TftpTimeoutCountMax) { 489 puts ("\nRetry count exceeded; starting again\n"); 490 #ifdef CONFIG_MCAST_TFTP 491 mcast_cleanup(); 492 #endif 493 NetStartAgain (); 494 } else { 495 puts ("T "); 496 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); 497 TftpSend (); 498 } 499 } 500 501 502 void 503 TftpStart (void) 504 { 505 char *ep; /* Environment pointer */ 506 507 /* Allow the user to choose tftpblocksize */ 508 if ((ep = getenv("tftpblocksize")) != NULL) 509 TftpBlkSizeOption = simple_strtol(ep, NULL, 10); 510 debug("tftp block size is %i\n", TftpBlkSizeOption); 511 512 TftpServerIP = NetServerIP; 513 if (BootFile[0] == '\0') { 514 sprintf(default_filename, "%02lX%02lX%02lX%02lX.img", 515 NetOurIP & 0xFF, 516 (NetOurIP >> 8) & 0xFF, 517 (NetOurIP >> 16) & 0xFF, 518 (NetOurIP >> 24) & 0xFF ); 519 520 strncpy(tftp_filename, default_filename, MAX_LEN); 521 tftp_filename[MAX_LEN-1] = 0; 522 523 printf ("*** Warning: no boot file name; using '%s'\n", 524 tftp_filename); 525 } else { 526 char *p = strchr (BootFile, ':'); 527 528 if (p == NULL) { 529 strncpy(tftp_filename, BootFile, MAX_LEN); 530 tftp_filename[MAX_LEN-1] = 0; 531 } else { 532 TftpServerIP = string_to_ip (BootFile); 533 strncpy(tftp_filename, p + 1, MAX_LEN); 534 tftp_filename[MAX_LEN-1] = 0; 535 } 536 } 537 538 #if defined(CONFIG_NET_MULTI) 539 printf ("Using %s device\n", eth_get_name()); 540 #endif 541 printf("TFTP from server %pI4" 542 "; our IP address is %pI4", &TftpServerIP, &NetOurIP); 543 544 /* Check if we need to send across this subnet */ 545 if (NetOurGatewayIP && NetOurSubnetMask) { 546 IPaddr_t OurNet = NetOurIP & NetOurSubnetMask; 547 IPaddr_t ServerNet = TftpServerIP & NetOurSubnetMask; 548 549 if (OurNet != ServerNet) 550 printf("; sending through gateway %pI4", &NetOurGatewayIP); 551 } 552 putc ('\n'); 553 554 printf ("Filename '%s'.", tftp_filename); 555 556 if (NetBootFileSize) { 557 printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9); 558 print_size (NetBootFileSize<<9, ""); 559 } 560 561 putc ('\n'); 562 563 printf ("Load address: 0x%lx\n", load_addr); 564 565 puts ("Loading: *\b"); 566 567 TftpTimeoutMSecs = TftpRRQTimeoutMSecs; 568 TftpTimeoutCountMax = TftpRRQTimeoutCountMax; 569 570 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); 571 NetSetHandler (TftpHandler); 572 573 TftpServerPort = WELL_KNOWN_PORT; 574 TftpTimeoutCount = 0; 575 TftpState = STATE_RRQ; 576 /* Use a pseudo-random port unless a specific port is set */ 577 TftpOurPort = 1024 + (get_timer(0) % 3072); 578 579 #ifdef CONFIG_TFTP_PORT 580 if ((ep = getenv("tftpdstp")) != NULL) { 581 TftpServerPort = simple_strtol(ep, NULL, 10); 582 } 583 if ((ep = getenv("tftpsrcp")) != NULL) { 584 TftpOurPort= simple_strtol(ep, NULL, 10); 585 } 586 #endif 587 TftpBlock = 0; 588 589 /* zero out server ether in case the server ip has changed */ 590 memset(NetServerEther, 0, 6); 591 /* Revert TftpBlkSize to dflt */ 592 TftpBlkSize = TFTP_BLOCK_SIZE; 593 #ifdef CONFIG_MCAST_TFTP 594 mcast_cleanup(); 595 #endif 596 #ifdef CONFIG_TFTP_TSIZE 597 TftpTsize = 0; 598 TftpNumchars = 0; 599 #endif 600 601 TftpSend (); 602 } 603 604 #ifdef CONFIG_MCAST_TFTP 605 /* Credits: atftp project. 606 */ 607 608 /* pick up BcastAddr, Port, and whether I am [now] the master-client. * 609 * Frame: 610 * +-------+-----------+---+-------~~-------+---+ 611 * | opc | multicast | 0 | addr, port, mc | 0 | 612 * +-------+-----------+---+-------~~-------+---+ 613 * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then 614 * I am the new master-client so must send ACKs to DataBlocks. If I am not 615 * master-client, I'm a passive client, gathering what DataBlocks I may and 616 * making note of which ones I got in my bitmask. 617 * In theory, I never go from master->passive.. 618 * .. this comes in with pkt already pointing just past opc 619 */ 620 static void parse_multicast_oack(char *pkt, int len) 621 { 622 int i; 623 IPaddr_t addr; 624 char *mc_adr, *port, *mc; 625 626 mc_adr=port=mc=NULL; 627 /* march along looking for 'multicast\0', which has to start at least 628 * 14 bytes back from the end. 629 */ 630 for (i=0;i<len-14;i++) 631 if (strcmp (pkt+i,"multicast") == 0) 632 break; 633 if (i >= (len-14)) /* non-Multicast OACK, ign. */ 634 return; 635 636 i+=10; /* strlen multicast */ 637 mc_adr = pkt+i; 638 for (;i<len;i++) { 639 if (*(pkt+i) == ',') { 640 *(pkt+i) = '\0'; 641 if (port) { 642 mc = pkt+i+1; 643 break; 644 } else { 645 port = pkt+i+1; 646 } 647 } 648 } 649 if (!port || !mc_adr || !mc ) return; 650 if (Multicast && MasterClient) { 651 printf ("I got a OACK as master Client, WRONG!\n"); 652 return; 653 } 654 /* ..I now accept packets destined for this MCAST addr, port */ 655 if (!Multicast) { 656 if (Bitmap) { 657 printf ("Internal failure! no mcast.\n"); 658 free(Bitmap); 659 Bitmap=NULL; 660 ProhibitMcast=1; 661 return ; 662 } 663 /* I malloc instead of pre-declare; so that if the file ends 664 * up being too big for this bitmap I can retry 665 */ 666 if (!(Bitmap = malloc (Mapsize))) { 667 printf ("No Bitmap, no multicast. Sorry.\n"); 668 ProhibitMcast=1; 669 return; 670 } 671 memset (Bitmap,0,Mapsize); 672 PrevBitmapHole = 0; 673 Multicast = 1; 674 } 675 addr = string_to_ip(mc_adr); 676 if (Mcast_addr != addr) { 677 if (Mcast_addr) 678 eth_mcast_join(Mcast_addr, 0); 679 if (eth_mcast_join(Mcast_addr=addr, 1)) { 680 printf ("Fail to set mcast, revert to TFTP\n"); 681 ProhibitMcast=1; 682 mcast_cleanup(); 683 NetStartAgain(); 684 } 685 } 686 MasterClient = (unsigned char)simple_strtoul((char *)mc,NULL,10); 687 Mcast_port = (unsigned short)simple_strtoul(port,NULL,10); 688 printf ("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient); 689 return; 690 } 691 692 #endif /* Multicast TFTP */ 693 694 #endif 695