blob: 2eace3dee1e9abb3112b195573005ff71d23418e [file] [log] [blame]
wdenkfe8c2802002-11-03 00:38:21 +00001/*
Luca Ceresoli2f094132011-05-14 05:49:56 +00002 * Copyright 1994, 1995, 2000 Neil Russell.
3 * (See License)
4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
wdenkfe8c2802002-11-03 00:38:21 +00005 */
6
7#include <common.h>
8#include <command.h>
9#include <net.h>
10#include "tftp.h"
11#include "bootp.h"
12
Luca Ceresoli2f094132011-05-14 05:49:56 +000013/* Well known TFTP port # */
14#define WELL_KNOWN_PORT 69
15/* Millisecs to timeout for lost pkt */
16#define TIMEOUT 5000UL
wdenkfe8c2802002-11-03 00:38:21 +000017#ifndef CONFIG_NET_RETRY_COUNT
Luca Ceresoli2f094132011-05-14 05:49:56 +000018/* # of timeouts before giving up */
19# define TIMEOUT_COUNT 10
wdenkfe8c2802002-11-03 00:38:21 +000020#else
21# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
22#endif
Luca Ceresoli2f094132011-05-14 05:49:56 +000023/* Number of "loading" hashes per line (for checking the image size) */
24#define HASHES_PER_LINE 65
wdenkfe8c2802002-11-03 00:38:21 +000025
26/*
27 * TFTP operations.
28 */
29#define TFTP_RRQ 1
30#define TFTP_WRQ 2
31#define TFTP_DATA 3
32#define TFTP_ACK 4
33#define TFTP_ERROR 5
wdenkfbe4b5c2003-10-06 21:55:32 +000034#define TFTP_OACK 6
wdenkfe8c2802002-11-03 00:38:21 +000035
Bartlomiej Siekae83cc062008-10-01 15:26:29 +020036static ulong TftpTimeoutMSecs = TIMEOUT;
37static int TftpTimeoutCountMax = TIMEOUT_COUNT;
38
39/*
40 * These globals govern the timeout behavior when attempting a connection to a
41 * TFTP server. TftpRRQTimeoutMSecs specifies the number of milliseconds to
42 * wait for the server to respond to initial connection. Second global,
43 * TftpRRQTimeoutCountMax, gives the number of such connection retries.
44 * TftpRRQTimeoutCountMax must be non-negative and TftpRRQTimeoutMSecs must be
45 * positive. The globals are meant to be set (and restored) by code needing
46 * non-standard timeout behavior when initiating a TFTP transfer.
47 */
48ulong TftpRRQTimeoutMSecs = TIMEOUT;
49int TftpRRQTimeoutCountMax = TIMEOUT_COUNT;
50
Remy Bohmeraafda382009-10-28 22:13:40 +010051enum {
52 TFTP_ERR_UNDEFINED = 0,
53 TFTP_ERR_FILE_NOT_FOUND = 1,
54 TFTP_ERR_ACCESS_DENIED = 2,
55 TFTP_ERR_DISK_FULL = 3,
56 TFTP_ERR_UNEXPECTED_OPCODE = 4,
57 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
58 TFTP_ERR_FILE_ALREADY_EXISTS = 6,
59};
60
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +010061static IPaddr_t TftpServerIP;
Luca Ceresoli2f094132011-05-14 05:49:56 +000062/* The UDP port at their end */
63static int TftpServerPort;
64/* The UDP port at our end */
65static int TftpOurPort;
wdenkfe8c2802002-11-03 00:38:21 +000066static int TftpTimeoutCount;
Luca Ceresoli2f094132011-05-14 05:49:56 +000067/* packet sequence number */
68static ulong TftpBlock;
69/* last packet sequence number received */
70static ulong TftpLastBlock;
71/* count of sequence number wraparounds */
72static ulong TftpBlockWrap;
73/* memory offset due to wrapping */
74static ulong TftpBlockWrapOffset;
wdenkfe8c2802002-11-03 00:38:21 +000075static int TftpState;
Robin Getz4fccb812009-08-20 10:50:20 -040076#ifdef CONFIG_TFTP_TSIZE
Luca Ceresoli2f094132011-05-14 05:49:56 +000077/* The file size reported by the server */
78static int TftpTsize;
79/* The number of hashes we printed */
80static short TftpNumchars;
Robin Getz4fccb812009-08-20 10:50:20 -040081#endif
wdenk3f85ce22004-02-23 16:11:30 +000082
wdenkfe8c2802002-11-03 00:38:21 +000083#define STATE_RRQ 1
84#define STATE_DATA 2
85#define STATE_TOO_LARGE 3
86#define STATE_BAD_MAGIC 4
wdenkfbe4b5c2003-10-06 21:55:32 +000087#define STATE_OACK 5
wdenkfe8c2802002-11-03 00:38:21 +000088
Luca Ceresoli2f094132011-05-14 05:49:56 +000089/* default TFTP block size */
90#define TFTP_BLOCK_SIZE 512
91/* sequence number is 16 bit */
92#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
wdenk3f85ce22004-02-23 16:11:30 +000093
wdenkfe8c2802002-11-03 00:38:21 +000094#define DEFAULT_NAME_LEN (8 + 4 + 1)
95static char default_filename[DEFAULT_NAME_LEN];
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +010096
97#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
98#define MAX_LEN 128
99#else
100#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
101#endif
102
103static char tftp_filename[MAX_LEN];
wdenkfe8c2802002-11-03 00:38:21 +0000104
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200105#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
Marian Balakowicze6f2e902005-10-11 19:09:42 +0200106extern flash_info_t flash_info[];
wdenkfe8c2802002-11-03 00:38:21 +0000107#endif
108
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200109/* 512 is poor choice for ethernet, MTU is typically 1500.
110 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
David Updegraff53a5c422007-06-11 10:41:07 -0500111 * almost-MTU block sizes. At least try... fall back to 512 if need be.
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200112 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
David Updegraff53a5c422007-06-11 10:41:07 -0500113 */
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200114#ifdef CONFIG_TFTP_BLOCKSIZE
115#define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE
116#else
David Updegraff53a5c422007-06-11 10:41:07 -0500117#define TFTP_MTU_BLOCKSIZE 1468
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200118#endif
119
David Updegraff53a5c422007-06-11 10:41:07 -0500120static unsigned short TftpBlkSize=TFTP_BLOCK_SIZE;
121static unsigned short TftpBlkSizeOption=TFTP_MTU_BLOCKSIZE;
122
123#ifdef CONFIG_MCAST_TFTP
124#include <malloc.h>
125#define MTFTP_BITMAPSIZE 0x1000
126static unsigned *Bitmap;
127static int PrevBitmapHole,Mapsize=MTFTP_BITMAPSIZE;
128static uchar ProhibitMcast=0, MasterClient=0;
129static uchar Multicast=0;
130extern IPaddr_t Mcast_addr;
131static int Mcast_port;
132static ulong TftpEndingBlock; /* can get 'last' block before done..*/
133
134static void parse_multicast_oack(char *pkt,int len);
135
136static void
137mcast_cleanup(void)
138{
139 if (Mcast_addr) eth_mcast_join(Mcast_addr, 0);
140 if (Bitmap) free(Bitmap);
141 Bitmap=NULL;
142 Mcast_addr = Multicast = Mcast_port = 0;
143 TftpEndingBlock = -1;
144}
145
146#endif /* CONFIG_MCAST_TFTP */
147
wdenkfe8c2802002-11-03 00:38:21 +0000148static __inline__ void
149store_block (unsigned block, uchar * src, unsigned len)
150{
David Updegraff53a5c422007-06-11 10:41:07 -0500151 ulong offset = block * TftpBlkSize + TftpBlockWrapOffset;
wdenk3f85ce22004-02-23 16:11:30 +0000152 ulong newsize = offset + len;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200153#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
wdenkfe8c2802002-11-03 00:38:21 +0000154 int i, rc = 0;
155
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200156 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++) {
wdenkfe8c2802002-11-03 00:38:21 +0000157 /* start address in flash? */
Jochen Friedrichbe1b0d22008-09-02 11:24:59 +0200158 if (flash_info[i].flash_id == FLASH_UNKNOWN)
159 continue;
wdenkfe8c2802002-11-03 00:38:21 +0000160 if (load_addr + offset >= flash_info[i].start[0]) {
161 rc = 1;
162 break;
163 }
164 }
165
166 if (rc) { /* Flash is destination for this packet */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200167 rc = flash_write ((char *)src, (ulong)(load_addr+offset), len);
wdenkfe8c2802002-11-03 00:38:21 +0000168 if (rc) {
169 flash_perror (rc);
170 NetState = NETLOOP_FAIL;
171 return;
172 }
173 }
174 else
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200175#endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
wdenkfe8c2802002-11-03 00:38:21 +0000176 {
177 (void)memcpy((void *)(load_addr + offset), src, len);
178 }
David Updegraff53a5c422007-06-11 10:41:07 -0500179#ifdef CONFIG_MCAST_TFTP
180 if (Multicast)
181 ext2_set_bit(block, Bitmap);
182#endif
wdenkfe8c2802002-11-03 00:38:21 +0000183
184 if (NetBootFileXferSize < newsize)
185 NetBootFileXferSize = newsize;
186}
187
188static void TftpSend (void);
189static void TftpTimeout (void);
190
191/**********************************************************************/
192
193static void
194TftpSend (void)
195{
196 volatile uchar * pkt;
197 volatile uchar * xp;
198 int len = 0;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200199 volatile ushort *s;
wdenkfe8c2802002-11-03 00:38:21 +0000200
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200201#ifdef CONFIG_MCAST_TFTP
David Updegraff53a5c422007-06-11 10:41:07 -0500202 /* Multicast TFTP.. non-MasterClients do not ACK data. */
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200203 if (Multicast
204 && (TftpState == STATE_DATA)
205 && (MasterClient == 0))
David Updegraff53a5c422007-06-11 10:41:07 -0500206 return;
207#endif
wdenkfe8c2802002-11-03 00:38:21 +0000208 /*
209 * We will always be sending some sort of packet, so
210 * cobble together the packet headers now.
211 */
wdenka3d991b2004-04-15 21:48:45 +0000212 pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;
wdenkfe8c2802002-11-03 00:38:21 +0000213
214 switch (TftpState) {
215
216 case STATE_RRQ:
217 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200218 s = (ushort *)pkt;
219 *s++ = htons(TFTP_RRQ);
220 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000221 strcpy ((char *)pkt, tftp_filename);
222 pkt += strlen(tftp_filename) + 1;
223 strcpy ((char *)pkt, "octet");
224 pkt += 5 /*strlen("octet")*/ + 1;
wdenkfbe4b5c2003-10-06 21:55:32 +0000225 strcpy ((char *)pkt, "timeout");
226 pkt += 7 /*strlen("timeout")*/ + 1;
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100227 sprintf((char *)pkt, "%lu", TftpTimeoutMSecs / 1000);
Robin Getz0ebf04c2009-07-23 03:01:03 -0400228 debug("send option \"timeout %s\"\n", (char *)pkt);
wdenkfbe4b5c2003-10-06 21:55:32 +0000229 pkt += strlen((char *)pkt) + 1;
Robin Getz4fccb812009-08-20 10:50:20 -0400230#ifdef CONFIG_TFTP_TSIZE
231 memcpy((char *)pkt, "tsize\0000\0", 8);
232 pkt += 8;
233#endif
David Updegraff53a5c422007-06-11 10:41:07 -0500234 /* try for more effic. blk size */
235 pkt += sprintf((char *)pkt,"blksize%c%d%c",
stefano babicef8f2072007-08-21 15:52:33 +0200236 0,TftpBlkSizeOption,0);
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200237#ifdef CONFIG_MCAST_TFTP
David Updegraff53a5c422007-06-11 10:41:07 -0500238 /* Check all preconditions before even trying the option */
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200239 if (!ProhibitMcast
240 && (Bitmap=malloc(Mapsize))
David Updegraff53a5c422007-06-11 10:41:07 -0500241 && eth_get_dev()->mcast) {
242 free(Bitmap);
243 Bitmap=NULL;
244 pkt += sprintf((char *)pkt,"multicast%c%c",0,0);
245 }
246#endif /* CONFIG_MCAST_TFTP */
wdenkfe8c2802002-11-03 00:38:21 +0000247 len = pkt - xp;
248 break;
249
wdenkfbe4b5c2003-10-06 21:55:32 +0000250 case STATE_OACK:
David Updegraff53a5c422007-06-11 10:41:07 -0500251#ifdef CONFIG_MCAST_TFTP
252 /* My turn! Start at where I need blocks I missed.*/
253 if (Multicast)
254 TftpBlock=ext2_find_next_zero_bit(Bitmap,(Mapsize*8),0);
255 /*..falling..*/
256#endif
257 case STATE_DATA:
wdenkfe8c2802002-11-03 00:38:21 +0000258 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200259 s = (ushort *)pkt;
260 *s++ = htons(TFTP_ACK);
261 *s++ = htons(TftpBlock);
262 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000263 len = pkt - xp;
264 break;
265
266 case STATE_TOO_LARGE:
267 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200268 s = (ushort *)pkt;
269 *s++ = htons(TFTP_ERROR);
270 *s++ = htons(3);
271 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000272 strcpy ((char *)pkt, "File too large");
273 pkt += 14 /*strlen("File too large")*/ + 1;
274 len = pkt - xp;
275 break;
276
277 case STATE_BAD_MAGIC:
278 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200279 s = (ushort *)pkt;
280 *s++ = htons(TFTP_ERROR);
281 *s++ = htons(2);
282 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000283 strcpy ((char *)pkt, "File has bad magic");
284 pkt += 18 /*strlen("File has bad magic")*/ + 1;
285 len = pkt - xp;
286 break;
287 }
288
Luca Ceresoli2f094132011-05-14 05:49:56 +0000289 NetSendUDPPacket(NetServerEther, TftpServerIP, TftpServerPort,
290 TftpOurPort, len);
wdenkfe8c2802002-11-03 00:38:21 +0000291}
292
293
294static void
Luca Ceresoli03eb1292011-04-18 06:19:50 +0000295TftpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
296 unsigned len)
wdenkfe8c2802002-11-03 00:38:21 +0000297{
298 ushort proto;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200299 ushort *s;
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200300 int i;
wdenkfe8c2802002-11-03 00:38:21 +0000301
302 if (dest != TftpOurPort) {
David Updegraff53a5c422007-06-11 10:41:07 -0500303#ifdef CONFIG_MCAST_TFTP
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200304 if (Multicast
David Updegraff53a5c422007-06-11 10:41:07 -0500305 && (!Mcast_port || (dest != Mcast_port)))
306#endif
wdenkfe8c2802002-11-03 00:38:21 +0000307 return;
308 }
309 if (TftpState != STATE_RRQ && src != TftpServerPort) {
310 return;
311 }
312
313 if (len < 2) {
314 return;
315 }
316 len -= 2;
317 /* warning: don't use increment (++) in ntohs() macros!! */
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200318 s = (ushort *)pkt;
319 proto = *s++;
320 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000321 switch (ntohs(proto)) {
322
323 case TFTP_RRQ:
324 case TFTP_WRQ:
325 case TFTP_ACK:
326 break;
327 default:
328 break;
329
wdenkfbe4b5c2003-10-06 21:55:32 +0000330 case TFTP_OACK:
Wolfgang Denkd3717082009-08-10 09:59:10 +0200331 debug("Got OACK: %s %s\n",
332 pkt,
333 pkt + strlen((char *)pkt) + 1);
wdenkfbe4b5c2003-10-06 21:55:32 +0000334 TftpState = STATE_OACK;
335 TftpServerPort = src;
Wolfgang Denk60174742007-08-31 10:01:51 +0200336 /*
337 * Check for 'blksize' option.
338 * Careful: "i" is signed, "len" is unsigned, thus
339 * something like "len-8" may give a *huge* number
340 */
341 for (i=0; i+8<len; i++) {
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200342 if (strcmp ((char*)pkt+i,"blksize") == 0) {
343 TftpBlkSize = (unsigned short)
344 simple_strtoul((char*)pkt+i+8,NULL,10);
Robin Getz0ebf04c2009-07-23 03:01:03 -0400345 debug("Blocksize ack: %s, %d\n",
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200346 (char*)pkt+i+8,TftpBlkSize);
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200347 }
Robin Getz4fccb812009-08-20 10:50:20 -0400348#ifdef CONFIG_TFTP_TSIZE
349 if (strcmp ((char*)pkt+i,"tsize") == 0) {
Luca Ceresoli2f094132011-05-14 05:49:56 +0000350 TftpTsize = simple_strtoul((char*)pkt+i+6,
351 NULL, 10);
Robin Getz4fccb812009-08-20 10:50:20 -0400352 debug("size = %s, %d\n",
353 (char*)pkt+i+6, TftpTsize);
354 }
355#endif
David Updegraff53a5c422007-06-11 10:41:07 -0500356 }
357#ifdef CONFIG_MCAST_TFTP
358 parse_multicast_oack((char *)pkt,len-1);
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200359 if ((Multicast) && (!MasterClient))
David Updegraff53a5c422007-06-11 10:41:07 -0500360 TftpState = STATE_DATA; /* passive.. */
361 else
362#endif
wdenkfbe4b5c2003-10-06 21:55:32 +0000363 TftpSend (); /* Send ACK */
364 break;
wdenkfe8c2802002-11-03 00:38:21 +0000365 case TFTP_DATA:
366 if (len < 2)
367 return;
368 len -= 2;
369 TftpBlock = ntohs(*(ushort *)pkt);
wdenk3f85ce22004-02-23 16:11:30 +0000370
371 /*
wdenkcd0a9de2004-02-23 20:48:38 +0000372 * RFC1350 specifies that the first data packet will
373 * have sequence number 1. If we receive a sequence
374 * number of 0 this means that there was a wrap
375 * around of the (16 bit) counter.
wdenk3f85ce22004-02-23 16:11:30 +0000376 */
377 if (TftpBlock == 0) {
378 TftpBlockWrap++;
Luca Ceresoli2f094132011-05-14 05:49:56 +0000379 TftpBlockWrapOffset +=
380 TftpBlkSize * TFTP_SEQUENCE_SIZE;
381 printf ("\n\t %lu MB received\n\t ",
382 TftpBlockWrapOffset>>20);
Robin Getz4fccb812009-08-20 10:50:20 -0400383 }
384#ifdef CONFIG_TFTP_TSIZE
385 else if (TftpTsize) {
Luca Ceresoli2f094132011-05-14 05:49:56 +0000386 while (TftpNumchars <
387 NetBootFileXferSize * 50 / TftpTsize) {
Robin Getz4fccb812009-08-20 10:50:20 -0400388 putc('#');
389 TftpNumchars++;
390 }
391 }
392#endif
393 else {
wdenk3f85ce22004-02-23 16:11:30 +0000394 if (((TftpBlock - 1) % 10) == 0) {
395 putc ('#');
396 } else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
397 puts ("\n\t ");
398 }
wdenkfe8c2802002-11-03 00:38:21 +0000399 }
400
Robin Getz0ebf04c2009-07-23 03:01:03 -0400401 if (TftpState == STATE_RRQ)
402 debug("Server did not acknowledge timeout option!\n");
wdenkfbe4b5c2003-10-06 21:55:32 +0000403
404 if (TftpState == STATE_RRQ || TftpState == STATE_OACK) {
wdenk3f85ce22004-02-23 16:11:30 +0000405 /* first block received */
wdenkfe8c2802002-11-03 00:38:21 +0000406 TftpState = STATE_DATA;
407 TftpServerPort = src;
408 TftpLastBlock = 0;
wdenk3f85ce22004-02-23 16:11:30 +0000409 TftpBlockWrap = 0;
410 TftpBlockWrapOffset = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000411
David Updegraff53a5c422007-06-11 10:41:07 -0500412#ifdef CONFIG_MCAST_TFTP
413 if (Multicast) { /* start!=1 common if mcast */
414 TftpLastBlock = TftpBlock - 1;
415 } else
416#endif
wdenkfe8c2802002-11-03 00:38:21 +0000417 if (TftpBlock != 1) { /* Assertion */
418 printf ("\nTFTP error: "
wdenk3f85ce22004-02-23 16:11:30 +0000419 "First block is not block 1 (%ld)\n"
wdenkfe8c2802002-11-03 00:38:21 +0000420 "Starting again\n\n",
421 TftpBlock);
422 NetStartAgain ();
423 break;
424 }
425 }
426
427 if (TftpBlock == TftpLastBlock) {
428 /*
429 * Same block again; ignore it.
430 */
431 break;
432 }
433
434 TftpLastBlock = TftpBlock;
Bartlomiej Siekae83cc062008-10-01 15:26:29 +0200435 TftpTimeoutCountMax = TIMEOUT_COUNT;
436 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout);
wdenkfe8c2802002-11-03 00:38:21 +0000437
438 store_block (TftpBlock - 1, pkt + 2, len);
439
440 /*
441 * Acknoledge the block just received, which will prompt
442 * the server for the next one.
443 */
David Updegraff53a5c422007-06-11 10:41:07 -0500444#ifdef CONFIG_MCAST_TFTP
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200445 /* if I am the MasterClient, actively calculate what my next
446 * needed block is; else I'm passive; not ACKING
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100447 */
David Updegraff53a5c422007-06-11 10:41:07 -0500448 if (Multicast) {
449 if (len < TftpBlkSize) {
450 TftpEndingBlock = TftpBlock;
451 } else if (MasterClient) {
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200452 TftpBlock = PrevBitmapHole =
David Updegraff53a5c422007-06-11 10:41:07 -0500453 ext2_find_next_zero_bit(
454 Bitmap,
455 (Mapsize*8),
456 PrevBitmapHole);
457 if (TftpBlock > ((Mapsize*8) - 1)) {
458 printf ("tftpfile too big\n");
459 /* try to double it and retry */
460 Mapsize<<=1;
461 mcast_cleanup();
462 NetStartAgain ();
463 return;
464 }
465 TftpLastBlock = TftpBlock;
466 }
467 }
468#endif
wdenkfe8c2802002-11-03 00:38:21 +0000469 TftpSend ();
470
David Updegraff53a5c422007-06-11 10:41:07 -0500471#ifdef CONFIG_MCAST_TFTP
472 if (Multicast) {
473 if (MasterClient && (TftpBlock >= TftpEndingBlock)) {
474 puts ("\nMulticast tftp done\n");
475 mcast_cleanup();
476 NetState = NETLOOP_SUCCESS;
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200477 }
David Updegraff53a5c422007-06-11 10:41:07 -0500478 }
479 else
480#endif
481 if (len < TftpBlkSize) {
wdenkfe8c2802002-11-03 00:38:21 +0000482 /*
483 * We received the whole thing. Try to
484 * run it.
485 */
Robin Getz4fccb812009-08-20 10:50:20 -0400486#ifdef CONFIG_TFTP_TSIZE
Luca Ceresoli2f094132011-05-14 05:49:56 +0000487 /* Print hash marks for the last packet received */
Robin Getz4fccb812009-08-20 10:50:20 -0400488 while (TftpTsize && TftpNumchars < 49) {
489 putc('#');
490 TftpNumchars++;
491 }
492#endif
wdenkfe8c2802002-11-03 00:38:21 +0000493 puts ("\ndone\n");
494 NetState = NETLOOP_SUCCESS;
495 }
496 break;
497
498 case TFTP_ERROR:
499 printf ("\nTFTP error: '%s' (%d)\n",
500 pkt + 2, ntohs(*(ushort *)pkt));
Remy Bohmeraafda382009-10-28 22:13:40 +0100501
502 switch (ntohs(*(ushort *)pkt)) {
503 case TFTP_ERR_FILE_NOT_FOUND:
504 case TFTP_ERR_ACCESS_DENIED:
505 puts("Not retrying...\n");
506 eth_halt();
507 NetState = NETLOOP_FAIL;
508 break;
509 case TFTP_ERR_UNDEFINED:
510 case TFTP_ERR_DISK_FULL:
511 case TFTP_ERR_UNEXPECTED_OPCODE:
512 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
513 case TFTP_ERR_FILE_ALREADY_EXISTS:
514 default:
515 puts("Starting again\n\n");
David Updegraff53a5c422007-06-11 10:41:07 -0500516#ifdef CONFIG_MCAST_TFTP
Remy Bohmeraafda382009-10-28 22:13:40 +0100517 mcast_cleanup();
David Updegraff53a5c422007-06-11 10:41:07 -0500518#endif
Remy Bohmeraafda382009-10-28 22:13:40 +0100519 NetStartAgain();
520 break;
521 }
wdenkfe8c2802002-11-03 00:38:21 +0000522 break;
523 }
524}
525
526
527static void
528TftpTimeout (void)
529{
Bartlomiej Siekae83cc062008-10-01 15:26:29 +0200530 if (++TftpTimeoutCount > TftpTimeoutCountMax) {
wdenkfe8c2802002-11-03 00:38:21 +0000531 puts ("\nRetry count exceeded; starting again\n");
David Updegraff53a5c422007-06-11 10:41:07 -0500532#ifdef CONFIG_MCAST_TFTP
533 mcast_cleanup();
534#endif
wdenkfe8c2802002-11-03 00:38:21 +0000535 NetStartAgain ();
536 } else {
537 puts ("T ");
Bartlomiej Siekae83cc062008-10-01 15:26:29 +0200538 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout);
wdenkfe8c2802002-11-03 00:38:21 +0000539 TftpSend ();
540 }
541}
542
543
544void
545TftpStart (void)
546{
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200547 char *ep; /* Environment pointer */
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200548
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100549 /*
550 * Allow the user to choose TFTP blocksize and timeout.
551 * TFTP protocol has a minimal timeout of 1 second.
552 */
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200553 if ((ep = getenv("tftpblocksize")) != NULL)
554 TftpBlkSizeOption = simple_strtol(ep, NULL, 10);
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100555
556 if ((ep = getenv("tftptimeout")) != NULL)
557 TftpTimeoutMSecs = simple_strtol(ep, NULL, 10);
558
559 if (TftpTimeoutMSecs < 1000) {
560 printf("TFTP timeout (%ld ms) too low, "
561 "set minimum = 1000 ms\n",
562 TftpTimeoutMSecs);
563 TftpTimeoutMSecs = 1000;
564 }
565
566 debug("TFTP blocksize = %i, timeout = %ld ms\n",
567 TftpBlkSizeOption, TftpTimeoutMSecs);
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200568
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100569 TftpServerIP = NetServerIP;
wdenkfe8c2802002-11-03 00:38:21 +0000570 if (BootFile[0] == '\0') {
wdenkfe8c2802002-11-03 00:38:21 +0000571 sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
Wolfgang Denkc43352c2005-08-04 01:09:44 +0200572 NetOurIP & 0xFF,
573 (NetOurIP >> 8) & 0xFF,
574 (NetOurIP >> 16) & 0xFF,
575 (NetOurIP >> 24) & 0xFF );
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100576
577 strncpy(tftp_filename, default_filename, MAX_LEN);
578 tftp_filename[MAX_LEN-1] = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000579
580 printf ("*** Warning: no boot file name; using '%s'\n",
581 tftp_filename);
582 } else {
Jean-Christophe PLAGNIOL-VILLARD38cc09c2008-02-14 08:02:12 +0100583 char *p = strchr (BootFile, ':');
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100584
585 if (p == NULL) {
586 strncpy(tftp_filename, BootFile, MAX_LEN);
587 tftp_filename[MAX_LEN-1] = 0;
588 } else {
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100589 TftpServerIP = string_to_ip (BootFile);
Peter Tyser6a86bb62008-12-01 16:29:38 -0600590 strncpy(tftp_filename, p + 1, MAX_LEN);
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100591 tftp_filename[MAX_LEN-1] = 0;
592 }
wdenkfe8c2802002-11-03 00:38:21 +0000593 }
594
wdenk5bb226e2003-11-17 21:14:37 +0000595#if defined(CONFIG_NET_MULTI)
596 printf ("Using %s device\n", eth_get_name());
597#endif
Mike Frysingerb6446b62009-02-17 00:00:53 -0500598 printf("TFTP from server %pI4"
599 "; our IP address is %pI4", &TftpServerIP, &NetOurIP);
wdenkfe8c2802002-11-03 00:38:21 +0000600
601 /* Check if we need to send across this subnet */
602 if (NetOurGatewayIP && NetOurSubnetMask) {
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100603 IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
604 IPaddr_t ServerNet = TftpServerIP & NetOurSubnetMask;
wdenkfe8c2802002-11-03 00:38:21 +0000605
Mike Frysingerb6446b62009-02-17 00:00:53 -0500606 if (OurNet != ServerNet)
607 printf("; sending through gateway %pI4", &NetOurGatewayIP);
wdenkfe8c2802002-11-03 00:38:21 +0000608 }
609 putc ('\n');
610
611 printf ("Filename '%s'.", tftp_filename);
612
613 if (NetBootFileSize) {
614 printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
615 print_size (NetBootFileSize<<9, "");
616 }
617
618 putc ('\n');
619
620 printf ("Load address: 0x%lx\n", load_addr);
621
622 puts ("Loading: *\b");
623
Bartlomiej Siekae83cc062008-10-01 15:26:29 +0200624 TftpTimeoutCountMax = TftpRRQTimeoutCountMax;
625
626 NetSetTimeout (TftpTimeoutMSecs, TftpTimeout);
wdenkfe8c2802002-11-03 00:38:21 +0000627 NetSetHandler (TftpHandler);
628
629 TftpServerPort = WELL_KNOWN_PORT;
630 TftpTimeoutCount = 0;
631 TftpState = STATE_RRQ;
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200632 /* Use a pseudo-random port unless a specific port is set */
wdenkfe8c2802002-11-03 00:38:21 +0000633 TftpOurPort = 1024 + (get_timer(0) % 3072);
David Updegraff53a5c422007-06-11 10:41:07 -0500634
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200635#ifdef CONFIG_TFTP_PORT
Wolfgang Denk28cb9372005-09-24 23:25:46 +0200636 if ((ep = getenv("tftpdstp")) != NULL) {
637 TftpServerPort = simple_strtol(ep, NULL, 10);
638 }
639 if ((ep = getenv("tftpsrcp")) != NULL) {
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200640 TftpOurPort= simple_strtol(ep, NULL, 10);
641 }
642#endif
wdenkfbe4b5c2003-10-06 21:55:32 +0000643 TftpBlock = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000644
wdenk73a8b272003-06-05 19:27:42 +0000645 /* zero out server ether in case the server ip has changed */
646 memset(NetServerEther, 0, 6);
David Updegraff53a5c422007-06-11 10:41:07 -0500647 /* Revert TftpBlkSize to dflt */
648 TftpBlkSize = TFTP_BLOCK_SIZE;
649#ifdef CONFIG_MCAST_TFTP
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100650 mcast_cleanup();
David Updegraff53a5c422007-06-11 10:41:07 -0500651#endif
Robin Getz4fccb812009-08-20 10:50:20 -0400652#ifdef CONFIG_TFTP_TSIZE
653 TftpTsize = 0;
654 TftpNumchars = 0;
655#endif
wdenk73a8b272003-06-05 19:27:42 +0000656
wdenkfe8c2802002-11-03 00:38:21 +0000657 TftpSend ();
658}
659
David Updegraff53a5c422007-06-11 10:41:07 -0500660#ifdef CONFIG_MCAST_TFTP
661/* Credits: atftp project.
662 */
663
664/* pick up BcastAddr, Port, and whether I am [now] the master-client. *
665 * Frame:
666 * +-------+-----------+---+-------~~-------+---+
667 * | opc | multicast | 0 | addr, port, mc | 0 |
668 * +-------+-----------+---+-------~~-------+---+
669 * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then
670 * I am the new master-client so must send ACKs to DataBlocks. If I am not
671 * master-client, I'm a passive client, gathering what DataBlocks I may and
672 * making note of which ones I got in my bitmask.
673 * In theory, I never go from master->passive..
674 * .. this comes in with pkt already pointing just past opc
675 */
676static void parse_multicast_oack(char *pkt, int len)
677{
678 int i;
679 IPaddr_t addr;
680 char *mc_adr, *port, *mc;
681
682 mc_adr=port=mc=NULL;
683 /* march along looking for 'multicast\0', which has to start at least
684 * 14 bytes back from the end.
685 */
686 for (i=0;i<len-14;i++)
687 if (strcmp (pkt+i,"multicast") == 0)
688 break;
689 if (i >= (len-14)) /* non-Multicast OACK, ign. */
690 return;
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200691
David Updegraff53a5c422007-06-11 10:41:07 -0500692 i+=10; /* strlen multicast */
693 mc_adr = pkt+i;
694 for (;i<len;i++) {
695 if (*(pkt+i) == ',') {
696 *(pkt+i) = '\0';
697 if (port) {
698 mc = pkt+i+1;
699 break;
700 } else {
701 port = pkt+i+1;
702 }
703 }
704 }
705 if (!port || !mc_adr || !mc ) return;
706 if (Multicast && MasterClient) {
707 printf ("I got a OACK as master Client, WRONG!\n");
708 return;
709 }
710 /* ..I now accept packets destined for this MCAST addr, port */
711 if (!Multicast) {
712 if (Bitmap) {
713 printf ("Internal failure! no mcast.\n");
714 free(Bitmap);
715 Bitmap=NULL;
716 ProhibitMcast=1;
717 return ;
718 }
719 /* I malloc instead of pre-declare; so that if the file ends
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200720 * up being too big for this bitmap I can retry
721 */
David Updegraff53a5c422007-06-11 10:41:07 -0500722 if (!(Bitmap = malloc (Mapsize))) {
723 printf ("No Bitmap, no multicast. Sorry.\n");
724 ProhibitMcast=1;
725 return;
726 }
727 memset (Bitmap,0,Mapsize);
728 PrevBitmapHole = 0;
729 Multicast = 1;
730 }
731 addr = string_to_ip(mc_adr);
732 if (Mcast_addr != addr) {
733 if (Mcast_addr)
734 eth_mcast_join(Mcast_addr, 0);
735 if (eth_mcast_join(Mcast_addr=addr, 1)) {
736 printf ("Fail to set mcast, revert to TFTP\n");
737 ProhibitMcast=1;
738 mcast_cleanup();
739 NetStartAgain();
740 }
741 }
742 MasterClient = (unsigned char)simple_strtoul((char *)mc,NULL,10);
743 Mcast_port = (unsigned short)simple_strtoul(port,NULL,10);
744 printf ("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient);
745 return;
746}
747
748#endif /* Multicast TFTP */