]> git.ipfire.org Git - people/ms/u-boot.git/blame - net/tftp.c
drivers: mmc: Avoid memory leak in case of failure
[people/ms/u-boot.git] / net / tftp.c
CommitLineData
fe8c2806 1/*
2f09413f
LC
2 * Copyright 1994, 1995, 2000 Neil Russell.
3 * (See License)
4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
e59e3562
LC
5 * Copyright 2011 Comelit Group SpA,
6 * Luca Ceresoli <luca.ceresoli@comelit.it>
fe8c2806
WD
7 */
8
9#include <common.h>
10#include <command.h>
0efe1bcf 11#include <efi_loader.h>
55d5fd9a 12#include <mapmem.h>
fe8c2806 13#include <net.h>
34696958 14#include <net/tftp.h>
fe8c2806 15#include "bootp.h"
13dfe943
JH
16#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
17#include <flash.h>
18#endif
fe8c2806 19
2f09413f
LC
20/* Well known TFTP port # */
21#define WELL_KNOWN_PORT 69
22/* Millisecs to timeout for lost pkt */
af2ca59e 23#define TIMEOUT 5000UL
fe8c2806 24#ifndef CONFIG_NET_RETRY_COUNT
2f09413f 25/* # of timeouts before giving up */
af2ca59e 26# define TIMEOUT_COUNT 10
fe8c2806
WD
27#else
28# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
29#endif
2f09413f
LC
30/* Number of "loading" hashes per line (for checking the image size) */
31#define HASHES_PER_LINE 65
fe8c2806
WD
32
33/*
34 * TFTP operations.
35 */
36#define TFTP_RRQ 1
37#define TFTP_WRQ 2
38#define TFTP_DATA 3
39#define TFTP_ACK 4
40#define TFTP_ERROR 5
fbe4b5cb 41#define TFTP_OACK 6
fe8c2806 42
8885c5fe
JH
43static ulong timeout_ms = TIMEOUT;
44static int timeout_count_max = TIMEOUT_COUNT;
85b19802 45static ulong time_start; /* Record time we started tftp */
e83cc063
BS
46
47/*
48 * These globals govern the timeout behavior when attempting a connection to a
8885c5fe 49 * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
e83cc063 50 * wait for the server to respond to initial connection. Second global,
8885c5fe
JH
51 * tftp_timeout_count_max, gives the number of such connection retries.
52 * tftp_timeout_count_max must be non-negative and tftp_timeout_ms must be
e83cc063
BS
53 * positive. The globals are meant to be set (and restored) by code needing
54 * non-standard timeout behavior when initiating a TFTP transfer.
55 */
8885c5fe
JH
56ulong tftp_timeout_ms = TIMEOUT;
57int tftp_timeout_count_max = TIMEOUT_COUNT;
e83cc063 58
aafda38f
RB
59enum {
60 TFTP_ERR_UNDEFINED = 0,
61 TFTP_ERR_FILE_NOT_FOUND = 1,
62 TFTP_ERR_ACCESS_DENIED = 2,
63 TFTP_ERR_DISK_FULL = 3,
64 TFTP_ERR_UNEXPECTED_OPCODE = 4,
65 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
66 TFTP_ERR_FILE_ALREADY_EXISTS = 6,
67};
68
049a95a7 69static struct in_addr tftp_remote_ip;
2f09413f 70/* The UDP port at their end */
8885c5fe 71static int tftp_remote_port;
2f09413f 72/* The UDP port at our end */
8885c5fe
JH
73static int tftp_our_port;
74static int timeout_count;
2f09413f 75/* packet sequence number */
8885c5fe 76static ulong tftp_cur_block;
2f09413f 77/* last packet sequence number received */
8885c5fe 78static ulong tftp_prev_block;
2f09413f 79/* count of sequence number wraparounds */
8885c5fe 80static ulong tftp_block_wrap;
2f09413f 81/* memory offset due to wrapping */
8885c5fe
JH
82static ulong tftp_block_wrap_offset;
83static int tftp_state;
4fccb818 84#ifdef CONFIG_TFTP_TSIZE
2f09413f 85/* The file size reported by the server */
8885c5fe 86static int tftp_tsize;
2f09413f 87/* The number of hashes we printed */
8885c5fe 88static short tftp_tsize_num_hash;
4fccb818 89#endif
1fb7cd49 90#ifdef CONFIG_CMD_TFTPPUT
8885c5fe
JH
91/* 1 if writing, else 0 */
92static int tftp_put_active;
93/* 1 if we have sent the last block */
94static int tftp_put_final_block_sent;
1fb7cd49 95#else
8885c5fe 96#define tftp_put_active 0
1fb7cd49 97#endif
3f85ce27 98
e3fb0abe 99#define STATE_SEND_RRQ 1
fe8c2806
WD
100#define STATE_DATA 2
101#define STATE_TOO_LARGE 3
102#define STATE_BAD_MAGIC 4
fbe4b5cb 103#define STATE_OACK 5
e59e3562 104#define STATE_RECV_WRQ 6
1fb7cd49 105#define STATE_SEND_WRQ 7
fe8c2806 106
2f09413f
LC
107/* default TFTP block size */
108#define TFTP_BLOCK_SIZE 512
109/* sequence number is 16 bit */
110#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
3f85ce27 111
fe8c2806
WD
112#define DEFAULT_NAME_LEN (8 + 4 + 1)
113static char default_filename[DEFAULT_NAME_LEN];
a93907c4
JCPV
114
115#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
116#define MAX_LEN 128
117#else
118#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
119#endif
120
121static char tftp_filename[MAX_LEN];
fe8c2806 122
85eb5caf
WD
123/* 512 is poor choice for ethernet, MTU is typically 1500.
124 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
53a5c424 125 * almost-MTU block sizes. At least try... fall back to 512 if need be.
89ba81d1 126 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
53a5c424 127 */
89ba81d1
AR
128#ifdef CONFIG_TFTP_BLOCKSIZE
129#define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE
130#else
53a5c424 131#define TFTP_MTU_BLOCKSIZE 1468
89ba81d1
AR
132#endif
133
8885c5fe
JH
134static unsigned short tftp_block_size = TFTP_BLOCK_SIZE;
135static unsigned short tftp_block_size_option = TFTP_MTU_BLOCKSIZE;
53a5c424
DU
136
137#ifdef CONFIG_MCAST_TFTP
138#include <malloc.h>
139#define MTFTP_BITMAPSIZE 0x1000
8885c5fe
JH
140static unsigned *tftp_mcast_bitmap;
141static int tftp_mcast_prev_hole;
142static int tftp_mcast_bitmap_size = MTFTP_BITMAPSIZE;
143static int tftp_mcast_disabled;
144static int tftp_mcast_master_client;
145static int tftp_mcast_active;
146static int tftp_mcast_port;
147/* can get 'last' block before done..*/
148static ulong tftp_mcast_ending_block;
53a5c424 149
c718b143 150static void parse_multicast_oack(char *pkt, int len);
53a5c424 151
8885c5fe 152static void mcast_cleanup(void)
53a5c424 153{
049a95a7
JH
154 if (net_mcast_addr)
155 eth_mcast_join(net_mcast_addr, 0);
8885c5fe
JH
156 if (tftp_mcast_bitmap)
157 free(tftp_mcast_bitmap);
158 tftp_mcast_bitmap = NULL;
049a95a7 159 net_mcast_addr.s_addr = 0;
8885c5fe
JH
160 tftp_mcast_active = 0;
161 tftp_mcast_port = 0;
162 tftp_mcast_ending_block = -1;
53a5c424
DU
163}
164
165#endif /* CONFIG_MCAST_TFTP */
166
8885c5fe 167static inline void store_block(int block, uchar *src, unsigned len)
fe8c2806 168{
8885c5fe 169 ulong offset = block * tftp_block_size + tftp_block_wrap_offset;
3f85ce27 170 ulong newsize = offset + len;
6d0f6bcf 171#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
fe8c2806
WD
172 int i, rc = 0;
173
c718b143 174 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
fe8c2806 175 /* start address in flash? */
be1b0d27
JF
176 if (flash_info[i].flash_id == FLASH_UNKNOWN)
177 continue;
fe8c2806
WD
178 if (load_addr + offset >= flash_info[i].start[0]) {
179 rc = 1;
180 break;
181 }
182 }
183
184 if (rc) { /* Flash is destination for this packet */
c718b143 185 rc = flash_write((char *)src, (ulong)(load_addr+offset), len);
fe8c2806 186 if (rc) {
c718b143 187 flash_perror(rc);
22f6e99d 188 net_set_state(NETLOOP_FAIL);
fe8c2806
WD
189 return;
190 }
13dfe943 191 } else
6d0f6bcf 192#endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
fe8c2806 193 {
55d5fd9a
JH
194 void *ptr = map_sysmem(load_addr + offset, len);
195
196 memcpy(ptr, src, len);
197 unmap_sysmem(ptr);
fe8c2806 198 }
53a5c424 199#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
200 if (tftp_mcast_active)
201 ext2_set_bit(block, tftp_mcast_bitmap);
53a5c424 202#endif
fe8c2806 203
1411157d
JH
204 if (net_boot_file_size < newsize)
205 net_boot_file_size = newsize;
fe8c2806
WD
206}
207
e4cde2f7 208/* Clear our state ready for a new transfer */
165099e7 209static void new_transfer(void)
e4cde2f7 210{
8885c5fe
JH
211 tftp_prev_block = 0;
212 tftp_block_wrap = 0;
213 tftp_block_wrap_offset = 0;
e4cde2f7 214#ifdef CONFIG_CMD_TFTPPUT
8885c5fe 215 tftp_put_final_block_sent = 0;
e4cde2f7
SG
216#endif
217}
218
1fb7cd49
SG
219#ifdef CONFIG_CMD_TFTPPUT
220/**
221 * Load the next block from memory to be sent over tftp.
222 *
223 * @param block Block number to send
224 * @param dst Destination buffer for data
225 * @param len Number of bytes in block (this one and every other)
226 * @return number of bytes loaded
227 */
228static int load_block(unsigned block, uchar *dst, unsigned len)
229{
230 /* We may want to get the final block from the previous set */
8885c5fe 231 ulong offset = ((int)block - 1) * len + tftp_block_wrap_offset;
1fb7cd49
SG
232 ulong tosend = len;
233
1411157d 234 tosend = min(net_boot_file_size - offset, tosend);
1fb7cd49
SG
235 (void)memcpy(dst, (void *)(save_addr + offset), tosend);
236 debug("%s: block=%d, offset=%ld, len=%d, tosend=%ld\n", __func__,
8885c5fe 237 block, offset, len, tosend);
1fb7cd49
SG
238 return tosend;
239}
240#endif
241
8885c5fe
JH
242static void tftp_send(void);
243static void tftp_timeout_handler(void);
fe8c2806
WD
244
245/**********************************************************************/
246
f5329bbc
SG
247static void show_block_marker(void)
248{
249#ifdef CONFIG_TFTP_TSIZE
8885c5fe
JH
250 if (tftp_tsize) {
251 ulong pos = tftp_cur_block * tftp_block_size +
252 tftp_block_wrap_offset;
7628afeb
MK
253 if (pos > tftp_tsize)
254 pos = tftp_tsize;
f5329bbc 255
8885c5fe 256 while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
f5329bbc 257 putc('#');
8885c5fe 258 tftp_tsize_num_hash++;
f5329bbc 259 }
1fb7cd49 260 } else
f5329bbc 261#endif
1fb7cd49 262 {
8885c5fe 263 if (((tftp_cur_block - 1) % 10) == 0)
f5329bbc 264 putc('#');
8885c5fe 265 else if ((tftp_cur_block % (10 * HASHES_PER_LINE)) == 0)
f5329bbc
SG
266 puts("\n\t ");
267 }
268}
269
e4cde2f7
SG
270/**
271 * restart the current transfer due to an error
272 *
273 * @param msg Message to print for user
274 */
275static void restart(const char *msg)
276{
277 printf("\n%s; starting again\n", msg);
278#ifdef CONFIG_MCAST_TFTP
279 mcast_cleanup();
280#endif
bc0571fc 281 net_start_again();
e4cde2f7
SG
282}
283
284/*
285 * Check if the block number has wrapped, and update progress
286 *
287 * TODO: The egregious use of global variables in this file should be tidied.
288 */
289static void update_block_number(void)
290{
291 /*
292 * RFC1350 specifies that the first data packet will
293 * have sequence number 1. If we receive a sequence
294 * number of 0 this means that there was a wrap
295 * around of the (16 bit) counter.
296 */
8885c5fe
JH
297 if (tftp_cur_block == 0 && tftp_prev_block != 0) {
298 tftp_block_wrap++;
299 tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
300 timeout_count = 0; /* we've done well, reset the timeout */
e4cde2f7
SG
301 } else {
302 show_block_marker();
303 }
304}
305
f5329bbc
SG
306/* The TFTP get or put is complete */
307static void tftp_complete(void)
308{
309#ifdef CONFIG_TFTP_TSIZE
310 /* Print hash marks for the last packet received */
8885c5fe 311 while (tftp_tsize && tftp_tsize_num_hash < 49) {
f5329bbc 312 putc('#');
8885c5fe 313 tftp_tsize_num_hash++;
f5329bbc 314 }
8104f546 315 puts(" ");
8885c5fe 316 print_size(tftp_tsize, "");
f5329bbc 317#endif
85b19802
SG
318 time_start = get_timer(time_start);
319 if (time_start > 0) {
320 puts("\n\t "); /* Line up with "Loading: " */
1411157d 321 print_size(net_boot_file_size /
85b19802
SG
322 time_start * 1000, "/s");
323 }
f5329bbc 324 puts("\ndone\n");
22f6e99d 325 net_set_state(NETLOOP_SUCCESS);
f5329bbc
SG
326}
327
8885c5fe 328static void tftp_send(void)
fe8c2806 329{
1fb7cd49 330 uchar *pkt;
db288a96
JH
331 uchar *xp;
332 int len = 0;
333 ushort *s;
fe8c2806 334
85eb5caf 335#ifdef CONFIG_MCAST_TFTP
53a5c424 336 /* Multicast TFTP.. non-MasterClients do not ACK data. */
8885c5fe
JH
337 if (tftp_mcast_active && tftp_state == STATE_DATA &&
338 tftp_mcast_master_client == 0)
53a5c424
DU
339 return;
340#endif
fe8c2806
WD
341 /*
342 * We will always be sending some sort of packet, so
343 * cobble together the packet headers now.
344 */
1203fcce 345 pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
fe8c2806 346
8885c5fe 347 switch (tftp_state) {
e3fb0abe 348 case STATE_SEND_RRQ:
1fb7cd49 349 case STATE_SEND_WRQ:
fe8c2806 350 xp = pkt;
7bc5ee07 351 s = (ushort *)pkt;
8c6914f1 352#ifdef CONFIG_CMD_TFTPPUT
8885c5fe 353 *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
1fb7cd49 354 TFTP_WRQ);
8c6914f1
SG
355#else
356 *s++ = htons(TFTP_RRQ);
357#endif
7bc5ee07 358 pkt = (uchar *)s;
c718b143 359 strcpy((char *)pkt, tftp_filename);
fe8c2806 360 pkt += strlen(tftp_filename) + 1;
c718b143 361 strcpy((char *)pkt, "octet");
fe8c2806 362 pkt += 5 /*strlen("octet")*/ + 1;
c718b143 363 strcpy((char *)pkt, "timeout");
fbe4b5cb 364 pkt += 7 /*strlen("timeout")*/ + 1;
8885c5fe 365 sprintf((char *)pkt, "%lu", timeout_ms / 1000);
0ebf04c6 366 debug("send option \"timeout %s\"\n", (char *)pkt);
fbe4b5cb 367 pkt += strlen((char *)pkt) + 1;
4fccb818 368#ifdef CONFIG_TFTP_TSIZE
1411157d
JH
369 pkt += sprintf((char *)pkt, "tsize%c%u%c",
370 0, net_boot_file_size, 0);
4fccb818 371#endif
53a5c424 372 /* try for more effic. blk size */
c718b143 373 pkt += sprintf((char *)pkt, "blksize%c%d%c",
8885c5fe 374 0, tftp_block_size_option, 0);
85eb5caf 375#ifdef CONFIG_MCAST_TFTP
53a5c424 376 /* Check all preconditions before even trying the option */
8885c5fe
JH
377 if (!tftp_mcast_disabled) {
378 tftp_mcast_bitmap = malloc(tftp_mcast_bitmap_size);
379 if (tftp_mcast_bitmap && eth_get_dev()->mcast) {
380 free(tftp_mcast_bitmap);
381 tftp_mcast_bitmap = NULL;
13dfe943
JH
382 pkt += sprintf((char *)pkt, "multicast%c%c",
383 0, 0);
384 }
53a5c424
DU
385 }
386#endif /* CONFIG_MCAST_TFTP */
fe8c2806
WD
387 len = pkt - xp;
388 break;
389
fbe4b5cb 390 case STATE_OACK:
53a5c424 391#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
392 /* My turn! Start at where I need blocks I missed. */
393 if (tftp_mcast_active)
394 tftp_cur_block = ext2_find_next_zero_bit(
395 tftp_mcast_bitmap,
396 tftp_mcast_bitmap_size * 8, 0);
397 /* fall through */
53a5c424 398#endif
e59e3562
LC
399
400 case STATE_RECV_WRQ:
53a5c424 401 case STATE_DATA:
fe8c2806 402 xp = pkt;
7bc5ee07 403 s = (ushort *)pkt;
1fb7cd49 404 s[0] = htons(TFTP_ACK);
8885c5fe 405 s[1] = htons(tftp_cur_block);
1fb7cd49
SG
406 pkt = (uchar *)(s + 2);
407#ifdef CONFIG_CMD_TFTPPUT
8885c5fe
JH
408 if (tftp_put_active) {
409 int toload = tftp_block_size;
410 int loaded = load_block(tftp_cur_block, pkt, toload);
1fb7cd49
SG
411
412 s[0] = htons(TFTP_DATA);
413 pkt += loaded;
8885c5fe 414 tftp_put_final_block_sent = (loaded < toload);
1fb7cd49
SG
415 }
416#endif
fe8c2806
WD
417 len = pkt - xp;
418 break;
419
420 case STATE_TOO_LARGE:
421 xp = pkt;
7bc5ee07
WD
422 s = (ushort *)pkt;
423 *s++ = htons(TFTP_ERROR);
1fb7cd49
SG
424 *s++ = htons(3);
425
7bc5ee07 426 pkt = (uchar *)s;
c718b143 427 strcpy((char *)pkt, "File too large");
fe8c2806
WD
428 pkt += 14 /*strlen("File too large")*/ + 1;
429 len = pkt - xp;
430 break;
431
432 case STATE_BAD_MAGIC:
433 xp = pkt;
7bc5ee07
WD
434 s = (ushort *)pkt;
435 *s++ = htons(TFTP_ERROR);
436 *s++ = htons(2);
437 pkt = (uchar *)s;
c718b143 438 strcpy((char *)pkt, "File has bad magic");
fe8c2806
WD
439 pkt += 18 /*strlen("File has bad magic")*/ + 1;
440 len = pkt - xp;
441 break;
442 }
443
8885c5fe
JH
444 net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
445 tftp_remote_port, tftp_our_port, len);
fe8c2806
WD
446}
447
39bccd21 448#ifdef CONFIG_CMD_TFTPPUT
1fb7cd49 449static void icmp_handler(unsigned type, unsigned code, unsigned dest,
049a95a7
JH
450 struct in_addr sip, unsigned src, uchar *pkt,
451 unsigned len)
1fb7cd49
SG
452{
453 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
454 /* Oh dear the other end has gone away */
455 restart("TFTP server died");
456 }
457}
39bccd21 458#endif
1fb7cd49 459
049a95a7
JH
460static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
461 unsigned src, unsigned len)
fe8c2806 462{
61fdd4f7
KP
463 __be16 proto;
464 __be16 *s;
ff13ac8c 465 int i;
fe8c2806 466
8885c5fe 467 if (dest != tftp_our_port) {
53a5c424 468#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
469 if (tftp_mcast_active &&
470 (!tftp_mcast_port || dest != tftp_mcast_port))
53a5c424 471#endif
0bdd8acc 472 return;
fe8c2806 473 }
8885c5fe
JH
474 if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
475 tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
fe8c2806 476 return;
fe8c2806 477
7bc325a1 478 if (len < 2)
fe8c2806 479 return;
fe8c2806
WD
480 len -= 2;
481 /* warning: don't use increment (++) in ntohs() macros!! */
61fdd4f7 482 s = (__be16 *)pkt;
7bc5ee07
WD
483 proto = *s++;
484 pkt = (uchar *)s;
fe8c2806 485 switch (ntohs(proto)) {
fe8c2806 486 case TFTP_RRQ:
1fb7cd49
SG
487 break;
488
fe8c2806 489 case TFTP_ACK:
1fb7cd49 490#ifdef CONFIG_CMD_TFTPPUT
8885c5fe
JH
491 if (tftp_put_active) {
492 if (tftp_put_final_block_sent) {
1fb7cd49
SG
493 tftp_complete();
494 } else {
495 /*
496 * Move to the next block. We want our block
497 * count to wrap just like the other end!
498 */
499 int block = ntohs(*s);
8885c5fe 500 int ack_ok = (tftp_cur_block == block);
1fb7cd49 501
8885c5fe 502 tftp_cur_block = (unsigned short)(block + 1);
1fb7cd49
SG
503 update_block_number();
504 if (ack_ok)
8885c5fe 505 tftp_send(); /* Send next data block */
1fb7cd49
SG
506 }
507 }
508#endif
fe8c2806 509 break;
1fb7cd49 510
fe8c2806
WD
511 default:
512 break;
513
e59e3562
LC
514#ifdef CONFIG_CMD_TFTPSRV
515 case TFTP_WRQ:
516 debug("Got WRQ\n");
049a95a7 517 tftp_remote_ip = sip;
8885c5fe
JH
518 tftp_remote_port = src;
519 tftp_our_port = 1024 + (get_timer(0) % 3072);
e4cde2f7 520 new_transfer();
8885c5fe 521 tftp_send(); /* Send ACK(0) */
e59e3562
LC
522 break;
523#endif
524
fbe4b5cb 525 case TFTP_OACK:
d371708a 526 debug("Got OACK: %s %s\n",
8885c5fe
JH
527 pkt, pkt + strlen((char *)pkt) + 1);
528 tftp_state = STATE_OACK;
529 tftp_remote_port = src;
60174746
WD
530 /*
531 * Check for 'blksize' option.
532 * Careful: "i" is signed, "len" is unsigned, thus
533 * something like "len-8" may give a *huge* number
534 */
c718b143 535 for (i = 0; i+8 < len; i++) {
8885c5fe
JH
536 if (strcmp((char *)pkt + i, "blksize") == 0) {
537 tftp_block_size = (unsigned short)
538 simple_strtoul((char *)pkt + i + 8,
539 NULL, 10);
0ebf04c6 540 debug("Blocksize ack: %s, %d\n",
8885c5fe 541 (char *)pkt + i + 8, tftp_block_size);
ff13ac8c 542 }
4fccb818 543#ifdef CONFIG_TFTP_TSIZE
2e320257 544 if (strcmp((char *)pkt+i, "tsize") == 0) {
8885c5fe 545 tftp_tsize = simple_strtoul((char *)pkt + i + 6,
2f09413f 546 NULL, 10);
4fccb818 547 debug("size = %s, %d\n",
8885c5fe 548 (char *)pkt + i + 6, tftp_tsize);
4fccb818
RG
549 }
550#endif
53a5c424
DU
551 }
552#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
553 parse_multicast_oack((char *)pkt, len - 1);
554 if ((tftp_mcast_active) && (!tftp_mcast_master_client))
555 tftp_state = STATE_DATA; /* passive.. */
53a5c424
DU
556 else
557#endif
1fb7cd49 558#ifdef CONFIG_CMD_TFTPPUT
8885c5fe 559 if (tftp_put_active) {
1fb7cd49 560 /* Get ready to send the first block */
8885c5fe
JH
561 tftp_state = STATE_DATA;
562 tftp_cur_block++;
1fb7cd49
SG
563 }
564#endif
8885c5fe 565 tftp_send(); /* Send ACK or first data block */
fbe4b5cb 566 break;
fe8c2806
WD
567 case TFTP_DATA:
568 if (len < 2)
569 return;
570 len -= 2;
8885c5fe 571 tftp_cur_block = ntohs(*(__be16 *)pkt);
3f85ce27 572
e4cde2f7 573 update_block_number();
fe8c2806 574
8885c5fe 575 if (tftp_state == STATE_SEND_RRQ)
0ebf04c6 576 debug("Server did not acknowledge timeout option!\n");
fbe4b5cb 577
8885c5fe
JH
578 if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
579 tftp_state == STATE_RECV_WRQ) {
3f85ce27 580 /* first block received */
8885c5fe
JH
581 tftp_state = STATE_DATA;
582 tftp_remote_port = src;
e4cde2f7 583 new_transfer();
fe8c2806 584
53a5c424 585#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
586 if (tftp_mcast_active) { /* start!=1 common if mcast */
587 tftp_prev_block = tftp_cur_block - 1;
53a5c424
DU
588 } else
589#endif
8885c5fe
JH
590 if (tftp_cur_block != 1) { /* Assertion */
591 puts("\nTFTP error: ");
592 printf("First block is not block 1 (%ld)\n",
593 tftp_cur_block);
594 puts("Starting again\n\n");
bc0571fc 595 net_start_again();
fe8c2806
WD
596 break;
597 }
598 }
599
8885c5fe
JH
600 if (tftp_cur_block == tftp_prev_block) {
601 /* Same block again; ignore it. */
fe8c2806
WD
602 break;
603 }
604
8885c5fe 605 tftp_prev_block = tftp_cur_block;
f5fb7346 606 timeout_count_max = tftp_timeout_count_max;
bc0571fc 607 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
fe8c2806 608
8885c5fe 609 store_block(tftp_cur_block - 1, pkt + 2, len);
fe8c2806
WD
610
611 /*
4d69e98c 612 * Acknowledge the block just received, which will prompt
20478cea 613 * the remote for the next one.
fe8c2806 614 */
53a5c424 615#ifdef CONFIG_MCAST_TFTP
85eb5caf
WD
616 /* if I am the MasterClient, actively calculate what my next
617 * needed block is; else I'm passive; not ACKING
a93907c4 618 */
8885c5fe
JH
619 if (tftp_mcast_active) {
620 if (len < tftp_block_size) {
621 tftp_mcast_ending_block = tftp_cur_block;
622 } else if (tftp_mcast_master_client) {
623 tftp_mcast_prev_hole = ext2_find_next_zero_bit(
624 tftp_mcast_bitmap,
625 tftp_mcast_bitmap_size * 8,
626 tftp_mcast_prev_hole);
627 tftp_cur_block = tftp_mcast_prev_hole;
628 if (tftp_cur_block >
629 ((tftp_mcast_bitmap_size * 8) - 1)) {
630 debug("tftpfile too big\n");
53a5c424 631 /* try to double it and retry */
8885c5fe 632 tftp_mcast_bitmap_size <<= 1;
53a5c424 633 mcast_cleanup();
bc0571fc 634 net_start_again();
53a5c424
DU
635 return;
636 }
8885c5fe 637 tftp_prev_block = tftp_cur_block;
53a5c424
DU
638 }
639 }
640#endif
8885c5fe 641 tftp_send();
fe8c2806 642
53a5c424 643#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
644 if (tftp_mcast_active) {
645 if (tftp_mcast_master_client &&
646 (tftp_cur_block >= tftp_mcast_ending_block)) {
c718b143 647 puts("\nMulticast tftp done\n");
53a5c424 648 mcast_cleanup();
22f6e99d 649 net_set_state(NETLOOP_SUCCESS);
85eb5caf 650 }
13dfe943 651 } else
53a5c424 652#endif
8885c5fe 653 if (len < tftp_block_size)
f5329bbc 654 tftp_complete();
fe8c2806
WD
655 break;
656
657 case TFTP_ERROR:
c718b143 658 printf("\nTFTP error: '%s' (%d)\n",
61fdd4f7 659 pkt + 2, ntohs(*(__be16 *)pkt));
aafda38f 660
61fdd4f7 661 switch (ntohs(*(__be16 *)pkt)) {
aafda38f
RB
662 case TFTP_ERR_FILE_NOT_FOUND:
663 case TFTP_ERR_ACCESS_DENIED:
664 puts("Not retrying...\n");
665 eth_halt();
22f6e99d 666 net_set_state(NETLOOP_FAIL);
aafda38f
RB
667 break;
668 case TFTP_ERR_UNDEFINED:
669 case TFTP_ERR_DISK_FULL:
670 case TFTP_ERR_UNEXPECTED_OPCODE:
671 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
672 case TFTP_ERR_FILE_ALREADY_EXISTS:
673 default:
674 puts("Starting again\n\n");
53a5c424 675#ifdef CONFIG_MCAST_TFTP
aafda38f 676 mcast_cleanup();
53a5c424 677#endif
bc0571fc 678 net_start_again();
aafda38f
RB
679 break;
680 }
fe8c2806
WD
681 break;
682 }
683}
684
685
8885c5fe 686static void tftp_timeout_handler(void)
fe8c2806 687{
8885c5fe 688 if (++timeout_count > timeout_count_max) {
e4cde2f7 689 restart("Retry count exceeded");
fe8c2806 690 } else {
c718b143 691 puts("T ");
bc0571fc 692 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
8885c5fe
JH
693 if (tftp_state != STATE_RECV_WRQ)
694 tftp_send();
fe8c2806
WD
695 }
696}
697
698
8885c5fe 699void tftp_start(enum proto_t protocol)
fe8c2806 700{
f5fb7346 701#if CONFIG_NET_TFTP_VARS
ecb0ccd9 702 char *ep; /* Environment pointer */
89ba81d1 703
c96f86ee
WD
704 /*
705 * Allow the user to choose TFTP blocksize and timeout.
706 * TFTP protocol has a minimal timeout of 1 second.
707 */
f5fb7346 708
00caae6d 709 ep = env_get("tftpblocksize");
2cb53608 710 if (ep != NULL)
8885c5fe 711 tftp_block_size_option = simple_strtol(ep, NULL, 10);
c96f86ee 712
00caae6d 713 ep = env_get("tftptimeout");
2cb53608 714 if (ep != NULL)
8885c5fe 715 timeout_ms = simple_strtol(ep, NULL, 10);
c96f86ee 716
af2ca59e
BM
717 if (timeout_ms < 1000) {
718 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
8885c5fe 719 timeout_ms);
af2ca59e 720 timeout_ms = 1000;
c96f86ee
WD
721 }
722
00caae6d 723 ep = env_get("tftptimeoutcountmax");
f5fb7346
AA
724 if (ep != NULL)
725 tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
726
727 if (tftp_timeout_count_max < 0) {
728 printf("TFTP timeout count max (%d ms) negative, set to 0\n",
729 tftp_timeout_count_max);
730 tftp_timeout_count_max = 0;
731 }
732#endif
733
c96f86ee 734 debug("TFTP blocksize = %i, timeout = %ld ms\n",
8885c5fe 735 tftp_block_size_option, timeout_ms);
ecb0ccd9 736
049a95a7 737 tftp_remote_ip = net_server_ip;
1411157d 738 if (net_boot_file_name[0] == '\0') {
ea45cb0a 739 sprintf(default_filename, "%02X%02X%02X%02X.img",
049a95a7
JH
740 net_ip.s_addr & 0xFF,
741 (net_ip.s_addr >> 8) & 0xFF,
742 (net_ip.s_addr >> 16) & 0xFF,
743 (net_ip.s_addr >> 24) & 0xFF);
a93907c4 744
0c17b1b7
VZ
745 strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
746 tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
fe8c2806 747
c718b143 748 printf("*** Warning: no boot file name; using '%s'\n",
8885c5fe 749 tftp_filename);
fe8c2806 750 } else {
1411157d 751 char *p = strchr(net_boot_file_name, ':');
a93907c4
JCPV
752
753 if (p == NULL) {
1411157d 754 strncpy(tftp_filename, net_boot_file_name, MAX_LEN);
8885c5fe 755 tftp_filename[MAX_LEN - 1] = 0;
a93907c4 756 } else {
1411157d 757 tftp_remote_ip = string_to_ip(net_boot_file_name);
6a86bb6c 758 strncpy(tftp_filename, p + 1, MAX_LEN);
8885c5fe 759 tftp_filename[MAX_LEN - 1] = 0;
a93907c4 760 }
fe8c2806
WD
761 }
762
c718b143 763 printf("Using %s device\n", eth_get_name());
1fb7cd49 764 printf("TFTP %s server %pI4; our IP address is %pI4",
8c6914f1
SG
765#ifdef CONFIG_CMD_TFTPPUT
766 protocol == TFTPPUT ? "to" : "from",
767#else
8885c5fe 768 "from",
8c6914f1 769#endif
8885c5fe 770 &tftp_remote_ip, &net_ip);
fe8c2806
WD
771
772 /* Check if we need to send across this subnet */
049a95a7
JH
773 if (net_gateway.s_addr && net_netmask.s_addr) {
774 struct in_addr our_net;
775 struct in_addr remote_net;
776
777 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
778 remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
779 if (our_net.s_addr != remote_net.s_addr)
780 printf("; sending through gateway %pI4", &net_gateway);
fe8c2806 781 }
c718b143 782 putc('\n');
fe8c2806 783
c718b143 784 printf("Filename '%s'.", tftp_filename);
fe8c2806 785
1411157d
JH
786 if (net_boot_file_expected_size_in_blocks) {
787 printf(" Size is 0x%x Bytes = ",
788 net_boot_file_expected_size_in_blocks << 9);
789 print_size(net_boot_file_expected_size_in_blocks << 9, "");
fe8c2806
WD
790 }
791
c718b143 792 putc('\n');
1fb7cd49 793#ifdef CONFIG_CMD_TFTPPUT
8885c5fe
JH
794 tftp_put_active = (protocol == TFTPPUT);
795 if (tftp_put_active) {
1fb7cd49
SG
796 printf("Save address: 0x%lx\n", save_addr);
797 printf("Save size: 0x%lx\n", save_size);
1411157d 798 net_boot_file_size = save_size;
1fb7cd49 799 puts("Saving: *\b");
8885c5fe 800 tftp_state = STATE_SEND_WRQ;
1fb7cd49
SG
801 new_transfer();
802 } else
803#endif
804 {
805 printf("Load address: 0x%lx\n", load_addr);
806 puts("Loading: *\b");
8885c5fe 807 tftp_state = STATE_SEND_RRQ;
64b8d7a6 808#ifdef CONFIG_CMD_BOOTEFI
0efe1bcf 809 efi_set_bootdev("Net", "", tftp_filename);
64b8d7a6 810#endif
1fb7cd49 811 }
fe8c2806 812
85b19802 813 time_start = get_timer(0);
8885c5fe 814 timeout_count_max = tftp_timeout_count_max;
e83cc063 815
bc0571fc 816 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
049a95a7 817 net_set_udp_handler(tftp_handler);
39bccd21 818#ifdef CONFIG_CMD_TFTPPUT
1fb7cd49 819 net_set_icmp_handler(icmp_handler);
39bccd21 820#endif
8885c5fe
JH
821 tftp_remote_port = WELL_KNOWN_PORT;
822 timeout_count = 0;
ecb0ccd9 823 /* Use a pseudo-random port unless a specific port is set */
8885c5fe 824 tftp_our_port = 1024 + (get_timer(0) % 3072);
53a5c424 825
ecb0ccd9 826#ifdef CONFIG_TFTP_PORT
00caae6d 827 ep = env_get("tftpdstp");
7bc325a1 828 if (ep != NULL)
8885c5fe 829 tftp_remote_port = simple_strtol(ep, NULL, 10);
00caae6d 830 ep = env_get("tftpsrcp");
7bc325a1 831 if (ep != NULL)
8885c5fe 832 tftp_our_port = simple_strtol(ep, NULL, 10);
ecb0ccd9 833#endif
8885c5fe 834 tftp_cur_block = 0;
fe8c2806 835
73a8b27c 836 /* zero out server ether in case the server ip has changed */
0adb5b76 837 memset(net_server_ethaddr, 0, 6);
8885c5fe
JH
838 /* Revert tftp_block_size to dflt */
839 tftp_block_size = TFTP_BLOCK_SIZE;
53a5c424 840#ifdef CONFIG_MCAST_TFTP
a93907c4 841 mcast_cleanup();
53a5c424 842#endif
4fccb818 843#ifdef CONFIG_TFTP_TSIZE
8885c5fe
JH
844 tftp_tsize = 0;
845 tftp_tsize_num_hash = 0;
4fccb818 846#endif
73a8b27c 847
8885c5fe 848 tftp_send();
fe8c2806
WD
849}
850
e59e3562 851#ifdef CONFIG_CMD_TFTPSRV
8885c5fe 852void tftp_start_server(void)
e59e3562
LC
853{
854 tftp_filename[0] = 0;
855
e59e3562 856 printf("Using %s device\n", eth_get_name());
049a95a7 857 printf("Listening for TFTP transfer on %pI4\n", &net_ip);
e59e3562
LC
858 printf("Load address: 0x%lx\n", load_addr);
859
860 puts("Loading: *\b");
861
f5fb7346 862 timeout_count_max = tftp_timeout_count_max;
8885c5fe
JH
863 timeout_count = 0;
864 timeout_ms = TIMEOUT;
bc0571fc 865 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
e59e3562 866
8885c5fe
JH
867 /* Revert tftp_block_size to dflt */
868 tftp_block_size = TFTP_BLOCK_SIZE;
869 tftp_cur_block = 0;
870 tftp_our_port = WELL_KNOWN_PORT;
e59e3562
LC
871
872#ifdef CONFIG_TFTP_TSIZE
8885c5fe
JH
873 tftp_tsize = 0;
874 tftp_tsize_num_hash = 0;
e59e3562
LC
875#endif
876
8885c5fe 877 tftp_state = STATE_RECV_WRQ;
049a95a7 878 net_set_udp_handler(tftp_handler);
8e52533d
AR
879
880 /* zero out server ether in case the server ip has changed */
0adb5b76 881 memset(net_server_ethaddr, 0, 6);
e59e3562
LC
882}
883#endif /* CONFIG_CMD_TFTPSRV */
884
53a5c424 885#ifdef CONFIG_MCAST_TFTP
8885c5fe
JH
886/*
887 * Credits: atftp project.
53a5c424
DU
888 */
889
8885c5fe
JH
890/*
891 * Pick up BcastAddr, Port, and whether I am [now] the master-client.
53a5c424
DU
892 * Frame:
893 * +-------+-----------+---+-------~~-------+---+
894 * | opc | multicast | 0 | addr, port, mc | 0 |
895 * +-------+-----------+---+-------~~-------+---+
896 * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then
897 * I am the new master-client so must send ACKs to DataBlocks. If I am not
898 * master-client, I'm a passive client, gathering what DataBlocks I may and
899 * making note of which ones I got in my bitmask.
900 * In theory, I never go from master->passive..
901 * .. this comes in with pkt already pointing just past opc
902 */
903static void parse_multicast_oack(char *pkt, int len)
904{
c718b143 905 int i;
049a95a7 906 struct in_addr addr;
8885c5fe
JH
907 char *mc_adr;
908 char *port;
909 char *mc;
53a5c424 910
8885c5fe
JH
911 mc_adr = NULL;
912 port = NULL;
913 mc = NULL;
53a5c424
DU
914 /* march along looking for 'multicast\0', which has to start at least
915 * 14 bytes back from the end.
916 */
8885c5fe
JH
917 for (i = 0; i < len - 14; i++)
918 if (strcmp(pkt + i, "multicast") == 0)
53a5c424 919 break;
8885c5fe 920 if (i >= (len - 14)) /* non-Multicast OACK, ign. */
53a5c424 921 return;
85eb5caf 922
c718b143 923 i += 10; /* strlen multicast */
8885c5fe 924 mc_adr = pkt + i;
c718b143 925 for (; i < len; i++) {
8885c5fe
JH
926 if (*(pkt + i) == ',') {
927 *(pkt + i) = '\0';
53a5c424 928 if (port) {
8885c5fe 929 mc = pkt + i + 1;
53a5c424
DU
930 break;
931 } else {
8885c5fe 932 port = pkt + i + 1;
53a5c424
DU
933 }
934 }
935 }
6d2231e8
LC
936 if (!port || !mc_adr || !mc)
937 return;
8885c5fe 938 if (tftp_mcast_active && tftp_mcast_master_client) {
c718b143 939 printf("I got a OACK as master Client, WRONG!\n");
53a5c424
DU
940 return;
941 }
942 /* ..I now accept packets destined for this MCAST addr, port */
8885c5fe
JH
943 if (!tftp_mcast_active) {
944 if (tftp_mcast_bitmap) {
c718b143 945 printf("Internal failure! no mcast.\n");
8885c5fe
JH
946 free(tftp_mcast_bitmap);
947 tftp_mcast_bitmap = NULL;
948 tftp_mcast_disabled = 1;
949 return;
53a5c424
DU
950 }
951 /* I malloc instead of pre-declare; so that if the file ends
85eb5caf
WD
952 * up being too big for this bitmap I can retry
953 */
8885c5fe
JH
954 tftp_mcast_bitmap = malloc(tftp_mcast_bitmap_size);
955 if (!tftp_mcast_bitmap) {
956 printf("No bitmap, no multicast. Sorry.\n");
957 tftp_mcast_disabled = 1;
53a5c424
DU
958 return;
959 }
8885c5fe
JH
960 memset(tftp_mcast_bitmap, 0, tftp_mcast_bitmap_size);
961 tftp_mcast_prev_hole = 0;
962 tftp_mcast_active = 1;
53a5c424
DU
963 }
964 addr = string_to_ip(mc_adr);
049a95a7
JH
965 if (net_mcast_addr.s_addr != addr.s_addr) {
966 if (net_mcast_addr.s_addr)
967 eth_mcast_join(net_mcast_addr, 0);
968 net_mcast_addr = addr;
969 if (eth_mcast_join(net_mcast_addr, 1)) {
c718b143 970 printf("Fail to set mcast, revert to TFTP\n");
8885c5fe 971 tftp_mcast_disabled = 1;
53a5c424 972 mcast_cleanup();
bc0571fc 973 net_start_again();
53a5c424
DU
974 }
975 }
8885c5fe
JH
976 tftp_mcast_master_client = simple_strtoul((char *)mc, NULL, 10);
977 tftp_mcast_port = (unsigned short)simple_strtoul(port, NULL, 10);
978 printf("Multicast: %s:%d [%d]\n", mc_adr, tftp_mcast_port,
979 tftp_mcast_master_client);
53a5c424
DU
980 return;
981}
982
983#endif /* Multicast TFTP */