2 * Copyright 1994, 1995, 2000 Neil Russell.
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>
11 #include <efi_loader.h>
16 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
20 /* Well known TFTP port # */
21 #define WELL_KNOWN_PORT 69
22 /* Millisecs to timeout for lost pkt */
23 #define TIMEOUT 5000UL
24 #ifndef CONFIG_NET_RETRY_COUNT
25 /* # of timeouts before giving up */
26 # define TIMEOUT_COUNT 10
28 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
30 /* Number of "loading" hashes per line (for checking the image size) */
31 #define HASHES_PER_LINE 65
43 static ulong timeout_ms
= TIMEOUT
;
44 static int timeout_count_max
= TIMEOUT_COUNT
;
45 static ulong time_start
; /* Record time we started tftp */
48 * These globals govern the timeout behavior when attempting a connection to a
49 * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
50 * wait for the server to respond to initial connection. Second global,
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
53 * positive. The globals are meant to be set (and restored) by code needing
54 * non-standard timeout behavior when initiating a TFTP transfer.
56 ulong tftp_timeout_ms
= TIMEOUT
;
57 int tftp_timeout_count_max
= TIMEOUT_COUNT
;
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,
69 static struct in_addr tftp_remote_ip
;
70 /* The UDP port at their end */
71 static int tftp_remote_port
;
72 /* The UDP port at our end */
73 static int tftp_our_port
;
74 static int timeout_count
;
75 /* packet sequence number */
76 static ulong tftp_cur_block
;
77 /* last packet sequence number received */
78 static ulong tftp_prev_block
;
79 /* count of sequence number wraparounds */
80 static ulong tftp_block_wrap
;
81 /* memory offset due to wrapping */
82 static ulong tftp_block_wrap_offset
;
83 static int tftp_state
;
84 #ifdef CONFIG_TFTP_TSIZE
85 /* The file size reported by the server */
86 static int tftp_tsize
;
87 /* The number of hashes we printed */
88 static short tftp_tsize_num_hash
;
90 #ifdef CONFIG_CMD_TFTPPUT
91 /* 1 if writing, else 0 */
92 static int tftp_put_active
;
93 /* 1 if we have sent the last block */
94 static int tftp_put_final_block_sent
;
96 #define tftp_put_active 0
99 #define STATE_SEND_RRQ 1
101 #define STATE_TOO_LARGE 3
102 #define STATE_BAD_MAGIC 4
104 #define STATE_RECV_WRQ 6
105 #define STATE_SEND_WRQ 7
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))
112 #define DEFAULT_NAME_LEN (8 + 4 + 1)
113 static char default_filename
[DEFAULT_NAME_LEN
];
115 #ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
118 #define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
121 static char tftp_filename
[MAX_LEN
];
123 /* 512 is poor choice for ethernet, MTU is typically 1500.
124 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
125 * almost-MTU block sizes. At least try... fall back to 512 if need be.
126 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
128 #ifdef CONFIG_TFTP_BLOCKSIZE
129 #define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE
131 #define TFTP_MTU_BLOCKSIZE 1468
134 static unsigned short tftp_block_size
= TFTP_BLOCK_SIZE
;
135 static unsigned short tftp_block_size_option
= TFTP_MTU_BLOCKSIZE
;
137 #ifdef CONFIG_MCAST_TFTP
139 #define MTFTP_BITMAPSIZE 0x1000
140 static unsigned *tftp_mcast_bitmap
;
141 static int tftp_mcast_prev_hole
;
142 static int tftp_mcast_bitmap_size
= MTFTP_BITMAPSIZE
;
143 static int tftp_mcast_disabled
;
144 static int tftp_mcast_master_client
;
145 static int tftp_mcast_active
;
146 static int tftp_mcast_port
;
147 /* can get 'last' block before done..*/
148 static ulong tftp_mcast_ending_block
;
150 static void parse_multicast_oack(char *pkt
, int len
);
152 static void mcast_cleanup(void)
155 eth_mcast_join(net_mcast_addr
, 0);
156 if (tftp_mcast_bitmap
)
157 free(tftp_mcast_bitmap
);
158 tftp_mcast_bitmap
= NULL
;
159 net_mcast_addr
.s_addr
= 0;
160 tftp_mcast_active
= 0;
162 tftp_mcast_ending_block
= -1;
165 #endif /* CONFIG_MCAST_TFTP */
167 static inline void store_block(int block
, uchar
*src
, unsigned len
)
169 ulong offset
= block
* tftp_block_size
+ tftp_block_wrap_offset
;
170 ulong newsize
= offset
+ len
;
171 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
174 for (i
= 0; i
< CONFIG_SYS_MAX_FLASH_BANKS
; i
++) {
175 /* start address in flash? */
176 if (flash_info
[i
].flash_id
== FLASH_UNKNOWN
)
178 if (load_addr
+ offset
>= flash_info
[i
].start
[0]) {
184 if (rc
) { /* Flash is destination for this packet */
185 rc
= flash_write((char *)src
, (ulong
)(load_addr
+offset
), len
);
188 net_set_state(NETLOOP_FAIL
);
192 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
194 void *ptr
= map_sysmem(load_addr
+ offset
, len
);
196 memcpy(ptr
, src
, len
);
199 #ifdef CONFIG_MCAST_TFTP
200 if (tftp_mcast_active
)
201 ext2_set_bit(block
, tftp_mcast_bitmap
);
204 if (net_boot_file_size
< newsize
)
205 net_boot_file_size
= newsize
;
208 /* Clear our state ready for a new transfer */
209 static void new_transfer(void)
213 tftp_block_wrap_offset
= 0;
214 #ifdef CONFIG_CMD_TFTPPUT
215 tftp_put_final_block_sent
= 0;
219 #ifdef CONFIG_CMD_TFTPPUT
221 * Load the next block from memory to be sent over tftp.
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
228 static int load_block(unsigned block
, uchar
*dst
, unsigned len
)
230 /* We may want to get the final block from the previous set */
231 ulong offset
= ((int)block
- 1) * len
+ tftp_block_wrap_offset
;
234 tosend
= min(net_boot_file_size
- offset
, tosend
);
235 (void)memcpy(dst
, (void *)(save_addr
+ offset
), tosend
);
236 debug("%s: block=%d, offset=%ld, len=%d, tosend=%ld\n", __func__
,
237 block
, offset
, len
, tosend
);
242 static void tftp_send(void);
243 static void tftp_timeout_handler(void);
245 /**********************************************************************/
247 static void show_block_marker(void)
249 #ifdef CONFIG_TFTP_TSIZE
251 ulong pos
= tftp_cur_block
* tftp_block_size
+
252 tftp_block_wrap_offset
;
253 if (pos
> tftp_tsize
)
256 while (tftp_tsize_num_hash
< pos
* 50 / tftp_tsize
) {
258 tftp_tsize_num_hash
++;
263 if (((tftp_cur_block
- 1) % 10) == 0)
265 else if ((tftp_cur_block
% (10 * HASHES_PER_LINE
)) == 0)
271 * restart the current transfer due to an error
273 * @param msg Message to print for user
275 static void restart(const char *msg
)
277 printf("\n%s; starting again\n", msg
);
278 #ifdef CONFIG_MCAST_TFTP
285 * Check if the block number has wrapped, and update progress
287 * TODO: The egregious use of global variables in this file should be tidied.
289 static void update_block_number(void)
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.
297 if (tftp_cur_block
== 0 && tftp_prev_block
!= 0) {
299 tftp_block_wrap_offset
+= tftp_block_size
* TFTP_SEQUENCE_SIZE
;
300 timeout_count
= 0; /* we've done well, reset the timeout */
306 /* The TFTP get or put is complete */
307 static void tftp_complete(void)
309 #ifdef CONFIG_TFTP_TSIZE
310 /* Print hash marks for the last packet received */
311 while (tftp_tsize
&& tftp_tsize_num_hash
< 49) {
313 tftp_tsize_num_hash
++;
316 print_size(tftp_tsize
, "");
318 time_start
= get_timer(time_start
);
319 if (time_start
> 0) {
320 puts("\n\t "); /* Line up with "Loading: " */
321 print_size(net_boot_file_size
/
322 time_start
* 1000, "/s");
325 net_set_state(NETLOOP_SUCCESS
);
328 static void tftp_send(void)
335 #ifdef CONFIG_MCAST_TFTP
336 /* Multicast TFTP.. non-MasterClients do not ACK data. */
337 if (tftp_mcast_active
&& tftp_state
== STATE_DATA
&&
338 tftp_mcast_master_client
== 0)
342 * We will always be sending some sort of packet, so
343 * cobble together the packet headers now.
345 pkt
= net_tx_packet
+ net_eth_hdr_size() + IP_UDP_HDR_SIZE
;
347 switch (tftp_state
) {
352 #ifdef CONFIG_CMD_TFTPPUT
353 *s
++ = htons(tftp_state
== STATE_SEND_RRQ
? TFTP_RRQ
:
356 *s
++ = htons(TFTP_RRQ
);
359 strcpy((char *)pkt
, tftp_filename
);
360 pkt
+= strlen(tftp_filename
) + 1;
361 strcpy((char *)pkt
, "octet");
362 pkt
+= 5 /*strlen("octet")*/ + 1;
363 strcpy((char *)pkt
, "timeout");
364 pkt
+= 7 /*strlen("timeout")*/ + 1;
365 sprintf((char *)pkt
, "%lu", timeout_ms
/ 1000);
366 debug("send option \"timeout %s\"\n", (char *)pkt
);
367 pkt
+= strlen((char *)pkt
) + 1;
368 #ifdef CONFIG_TFTP_TSIZE
369 pkt
+= sprintf((char *)pkt
, "tsize%c%u%c",
370 0, net_boot_file_size
, 0);
372 /* try for more effic. blk size */
373 pkt
+= sprintf((char *)pkt
, "blksize%c%d%c",
374 0, tftp_block_size_option
, 0);
375 #ifdef CONFIG_MCAST_TFTP
376 /* Check all preconditions before even trying the option */
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
;
382 pkt
+= sprintf((char *)pkt
, "multicast%c%c",
386 #endif /* CONFIG_MCAST_TFTP */
391 #ifdef CONFIG_MCAST_TFTP
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(
396 tftp_mcast_bitmap_size
* 8, 0);
404 s
[0] = htons(TFTP_ACK
);
405 s
[1] = htons(tftp_cur_block
);
406 pkt
= (uchar
*)(s
+ 2);
407 #ifdef CONFIG_CMD_TFTPPUT
408 if (tftp_put_active
) {
409 int toload
= tftp_block_size
;
410 int loaded
= load_block(tftp_cur_block
, pkt
, toload
);
412 s
[0] = htons(TFTP_DATA
);
414 tftp_put_final_block_sent
= (loaded
< toload
);
420 case STATE_TOO_LARGE
:
423 *s
++ = htons(TFTP_ERROR
);
427 strcpy((char *)pkt
, "File too large");
428 pkt
+= 14 /*strlen("File too large")*/ + 1;
432 case STATE_BAD_MAGIC
:
435 *s
++ = htons(TFTP_ERROR
);
438 strcpy((char *)pkt
, "File has bad magic");
439 pkt
+= 18 /*strlen("File has bad magic")*/ + 1;
444 net_send_udp_packet(net_server_ethaddr
, tftp_remote_ip
,
445 tftp_remote_port
, tftp_our_port
, len
);
448 #ifdef CONFIG_CMD_TFTPPUT
449 static void icmp_handler(unsigned type
, unsigned code
, unsigned dest
,
450 struct in_addr sip
, unsigned src
, uchar
*pkt
,
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");
460 static void tftp_handler(uchar
*pkt
, unsigned dest
, struct in_addr sip
,
461 unsigned src
, unsigned len
)
467 if (dest
!= tftp_our_port
) {
468 #ifdef CONFIG_MCAST_TFTP
469 if (tftp_mcast_active
&&
470 (!tftp_mcast_port
|| dest
!= tftp_mcast_port
))
474 if (tftp_state
!= STATE_SEND_RRQ
&& src
!= tftp_remote_port
&&
475 tftp_state
!= STATE_RECV_WRQ
&& tftp_state
!= STATE_SEND_WRQ
)
481 /* warning: don't use increment (++) in ntohs() macros!! */
485 switch (ntohs(proto
)) {
490 #ifdef CONFIG_CMD_TFTPPUT
491 if (tftp_put_active
) {
492 if (tftp_put_final_block_sent
) {
496 * Move to the next block. We want our block
497 * count to wrap just like the other end!
499 int block
= ntohs(*s
);
500 int ack_ok
= (tftp_cur_block
== block
);
502 tftp_cur_block
= (unsigned short)(block
+ 1);
503 update_block_number();
505 tftp_send(); /* Send next data block */
514 #ifdef CONFIG_CMD_TFTPSRV
517 tftp_remote_ip
= sip
;
518 tftp_remote_port
= src
;
519 tftp_our_port
= 1024 + (get_timer(0) % 3072);
521 tftp_send(); /* Send ACK(0) */
526 debug("Got OACK: %s %s\n",
527 pkt
, pkt
+ strlen((char *)pkt
) + 1);
528 tftp_state
= STATE_OACK
;
529 tftp_remote_port
= src
;
531 * Check for 'blksize' option.
532 * Careful: "i" is signed, "len" is unsigned, thus
533 * something like "len-8" may give a *huge* number
535 for (i
= 0; i
+8 < len
; i
++) {
536 if (strcmp((char *)pkt
+ i
, "blksize") == 0) {
537 tftp_block_size
= (unsigned short)
538 simple_strtoul((char *)pkt
+ i
+ 8,
540 debug("Blocksize ack: %s, %d\n",
541 (char *)pkt
+ i
+ 8, tftp_block_size
);
543 #ifdef CONFIG_TFTP_TSIZE
544 if (strcmp((char *)pkt
+i
, "tsize") == 0) {
545 tftp_tsize
= simple_strtoul((char *)pkt
+ i
+ 6,
547 debug("size = %s, %d\n",
548 (char *)pkt
+ i
+ 6, tftp_tsize
);
552 #ifdef CONFIG_MCAST_TFTP
553 parse_multicast_oack((char *)pkt
, len
- 1);
554 if ((tftp_mcast_active
) && (!tftp_mcast_master_client
))
555 tftp_state
= STATE_DATA
; /* passive.. */
558 #ifdef CONFIG_CMD_TFTPPUT
559 if (tftp_put_active
) {
560 /* Get ready to send the first block */
561 tftp_state
= STATE_DATA
;
565 tftp_send(); /* Send ACK or first data block */
571 tftp_cur_block
= ntohs(*(__be16
*)pkt
);
573 update_block_number();
575 if (tftp_state
== STATE_SEND_RRQ
)
576 debug("Server did not acknowledge timeout option!\n");
578 if (tftp_state
== STATE_SEND_RRQ
|| tftp_state
== STATE_OACK
||
579 tftp_state
== STATE_RECV_WRQ
) {
580 /* first block received */
581 tftp_state
= STATE_DATA
;
582 tftp_remote_port
= src
;
585 #ifdef CONFIG_MCAST_TFTP
586 if (tftp_mcast_active
) { /* start!=1 common if mcast */
587 tftp_prev_block
= tftp_cur_block
- 1;
590 if (tftp_cur_block
!= 1) { /* Assertion */
591 puts("\nTFTP error: ");
592 printf("First block is not block 1 (%ld)\n",
594 puts("Starting again\n\n");
600 if (tftp_cur_block
== tftp_prev_block
) {
601 /* Same block again; ignore it. */
605 tftp_prev_block
= tftp_cur_block
;
606 timeout_count_max
= tftp_timeout_count_max
;
607 net_set_timeout_handler(timeout_ms
, tftp_timeout_handler
);
609 store_block(tftp_cur_block
- 1, pkt
+ 2, len
);
612 * Acknowledge the block just received, which will prompt
613 * the remote for the next one.
615 #ifdef CONFIG_MCAST_TFTP
616 /* if I am the MasterClient, actively calculate what my next
617 * needed block is; else I'm passive; not ACKING
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(
625 tftp_mcast_bitmap_size
* 8,
626 tftp_mcast_prev_hole
);
627 tftp_cur_block
= tftp_mcast_prev_hole
;
629 ((tftp_mcast_bitmap_size
* 8) - 1)) {
630 debug("tftpfile too big\n");
631 /* try to double it and retry */
632 tftp_mcast_bitmap_size
<<= 1;
637 tftp_prev_block
= tftp_cur_block
;
643 #ifdef CONFIG_MCAST_TFTP
644 if (tftp_mcast_active
) {
645 if (tftp_mcast_master_client
&&
646 (tftp_cur_block
>= tftp_mcast_ending_block
)) {
647 puts("\nMulticast tftp done\n");
649 net_set_state(NETLOOP_SUCCESS
);
653 if (len
< tftp_block_size
)
658 printf("\nTFTP error: '%s' (%d)\n",
659 pkt
+ 2, ntohs(*(__be16
*)pkt
));
661 switch (ntohs(*(__be16
*)pkt
)) {
662 case TFTP_ERR_FILE_NOT_FOUND
:
663 case TFTP_ERR_ACCESS_DENIED
:
664 puts("Not retrying...\n");
666 net_set_state(NETLOOP_FAIL
);
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
:
674 puts("Starting again\n\n");
675 #ifdef CONFIG_MCAST_TFTP
686 static void tftp_timeout_handler(void)
688 if (++timeout_count
> timeout_count_max
) {
689 restart("Retry count exceeded");
692 net_set_timeout_handler(timeout_ms
, tftp_timeout_handler
);
693 if (tftp_state
!= STATE_RECV_WRQ
)
699 void tftp_start(enum proto_t protocol
)
701 #if CONFIG_NET_TFTP_VARS
702 char *ep
; /* Environment pointer */
705 * Allow the user to choose TFTP blocksize and timeout.
706 * TFTP protocol has a minimal timeout of 1 second.
709 ep
= env_get("tftpblocksize");
711 tftp_block_size_option
= simple_strtol(ep
, NULL
, 10);
713 ep
= env_get("tftptimeout");
715 timeout_ms
= simple_strtol(ep
, NULL
, 10);
717 if (timeout_ms
< 1000) {
718 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
723 ep
= env_get("tftptimeoutcountmax");
725 tftp_timeout_count_max
= simple_strtol(ep
, NULL
, 10);
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;
734 debug("TFTP blocksize = %i, timeout = %ld ms\n",
735 tftp_block_size_option
, timeout_ms
);
737 tftp_remote_ip
= net_server_ip
;
738 if (net_boot_file_name
[0] == '\0') {
739 sprintf(default_filename
, "%02X%02X%02X%02X.img",
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);
745 strncpy(tftp_filename
, default_filename
, DEFAULT_NAME_LEN
);
746 tftp_filename
[DEFAULT_NAME_LEN
- 1] = 0;
748 printf("*** Warning: no boot file name; using '%s'\n",
751 char *p
= strchr(net_boot_file_name
, ':');
754 strncpy(tftp_filename
, net_boot_file_name
, MAX_LEN
);
755 tftp_filename
[MAX_LEN
- 1] = 0;
757 tftp_remote_ip
= string_to_ip(net_boot_file_name
);
758 strncpy(tftp_filename
, p
+ 1, MAX_LEN
);
759 tftp_filename
[MAX_LEN
- 1] = 0;
763 printf("Using %s device\n", eth_get_name());
764 printf("TFTP %s server %pI4; our IP address is %pI4",
765 #ifdef CONFIG_CMD_TFTPPUT
766 protocol
== TFTPPUT
? "to" : "from",
770 &tftp_remote_ip
, &net_ip
);
772 /* Check if we need to send across this subnet */
773 if (net_gateway
.s_addr
&& net_netmask
.s_addr
) {
774 struct in_addr our_net
;
775 struct in_addr remote_net
;
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
);
784 printf("Filename '%s'.", tftp_filename
);
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, "");
793 #ifdef CONFIG_CMD_TFTPPUT
794 tftp_put_active
= (protocol
== TFTPPUT
);
795 if (tftp_put_active
) {
796 printf("Save address: 0x%lx\n", save_addr
);
797 printf("Save size: 0x%lx\n", save_size
);
798 net_boot_file_size
= save_size
;
800 tftp_state
= STATE_SEND_WRQ
;
805 printf("Load address: 0x%lx\n", load_addr
);
806 puts("Loading: *\b");
807 tftp_state
= STATE_SEND_RRQ
;
808 #ifdef CONFIG_CMD_BOOTEFI
809 efi_set_bootdev("Net", "", tftp_filename
);
813 time_start
= get_timer(0);
814 timeout_count_max
= tftp_timeout_count_max
;
816 net_set_timeout_handler(timeout_ms
, tftp_timeout_handler
);
817 net_set_udp_handler(tftp_handler
);
818 #ifdef CONFIG_CMD_TFTPPUT
819 net_set_icmp_handler(icmp_handler
);
821 tftp_remote_port
= WELL_KNOWN_PORT
;
823 /* Use a pseudo-random port unless a specific port is set */
824 tftp_our_port
= 1024 + (get_timer(0) % 3072);
826 #ifdef CONFIG_TFTP_PORT
827 ep
= env_get("tftpdstp");
829 tftp_remote_port
= simple_strtol(ep
, NULL
, 10);
830 ep
= env_get("tftpsrcp");
832 tftp_our_port
= simple_strtol(ep
, NULL
, 10);
836 /* zero out server ether in case the server ip has changed */
837 memset(net_server_ethaddr
, 0, 6);
838 /* Revert tftp_block_size to dflt */
839 tftp_block_size
= TFTP_BLOCK_SIZE
;
840 #ifdef CONFIG_MCAST_TFTP
843 #ifdef CONFIG_TFTP_TSIZE
845 tftp_tsize_num_hash
= 0;
851 #ifdef CONFIG_CMD_TFTPSRV
852 void tftp_start_server(void)
854 tftp_filename
[0] = 0;
856 printf("Using %s device\n", eth_get_name());
857 printf("Listening for TFTP transfer on %pI4\n", &net_ip
);
858 printf("Load address: 0x%lx\n", load_addr
);
860 puts("Loading: *\b");
862 timeout_count_max
= tftp_timeout_count_max
;
864 timeout_ms
= TIMEOUT
;
865 net_set_timeout_handler(timeout_ms
, tftp_timeout_handler
);
867 /* Revert tftp_block_size to dflt */
868 tftp_block_size
= TFTP_BLOCK_SIZE
;
870 tftp_our_port
= WELL_KNOWN_PORT
;
872 #ifdef CONFIG_TFTP_TSIZE
874 tftp_tsize_num_hash
= 0;
877 tftp_state
= STATE_RECV_WRQ
;
878 net_set_udp_handler(tftp_handler
);
880 /* zero out server ether in case the server ip has changed */
881 memset(net_server_ethaddr
, 0, 6);
883 #endif /* CONFIG_CMD_TFTPSRV */
885 #ifdef CONFIG_MCAST_TFTP
887 * Credits: atftp project.
891 * Pick up BcastAddr, Port, and whether I am [now] the master-client.
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
903 static void parse_multicast_oack(char *pkt
, int len
)
914 /* march along looking for 'multicast\0', which has to start at least
915 * 14 bytes back from the end.
917 for (i
= 0; i
< len
- 14; i
++)
918 if (strcmp(pkt
+ i
, "multicast") == 0)
920 if (i
>= (len
- 14)) /* non-Multicast OACK, ign. */
923 i
+= 10; /* strlen multicast */
925 for (; i
< len
; i
++) {
926 if (*(pkt
+ i
) == ',') {
936 if (!port
|| !mc_adr
|| !mc
)
938 if (tftp_mcast_active
&& tftp_mcast_master_client
) {
939 printf("I got a OACK as master Client, WRONG!\n");
942 /* ..I now accept packets destined for this MCAST addr, port */
943 if (!tftp_mcast_active
) {
944 if (tftp_mcast_bitmap
) {
945 printf("Internal failure! no mcast.\n");
946 free(tftp_mcast_bitmap
);
947 tftp_mcast_bitmap
= NULL
;
948 tftp_mcast_disabled
= 1;
951 /* I malloc instead of pre-declare; so that if the file ends
952 * up being too big for this bitmap I can retry
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;
960 memset(tftp_mcast_bitmap
, 0, tftp_mcast_bitmap_size
);
961 tftp_mcast_prev_hole
= 0;
962 tftp_mcast_active
= 1;
964 addr
= string_to_ip(mc_adr
);
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)) {
970 printf("Fail to set mcast, revert to TFTP\n");
971 tftp_mcast_disabled
= 1;
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
);
983 #endif /* Multicast TFTP */