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Add Transfer Size Option to tftp 

Optionally add RFC 2349 "Transfer Size Option", so we can minimize the
time spent sending data over the UART (now print a single line during a
tftp transfer).

 - If turned on (CONFIG_TFTP_TSIZE), U-Boot asks for the size of the file.
 - if receives the file size, a single line (50 chars) are printed.
     one hash mark == 2% of the file downloaded.
 - if it doesn't receive the file size (the server doesn't support RFC
     2349, prints standard hash marks (one mark for each UDP frame).

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Robin Getz 2009-08-20 10:50:20 -04:00 committed by Ben Warren
parent 488feef852
commit 4fccb818e7
1 changed files with 36 additions and 2 deletions
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38
net/tftp.c
View File

@ -56,6 +56,10 @@ static ulong TftpLastBlock; /* last packet sequence number received */
static ulong TftpBlockWrap; /* count of sequence number wraparounds */
static ulong TftpBlockWrapOffset; /* memory offset due to wrapping */
static int TftpState;
#ifdef CONFIG_TFTP_TSIZE
static int TftpTsize; /* The file size reported by the server */
static short TftpNumchars; /* The number of hashes we printed */
#endif
#define STATE_RRQ 1
#define STATE_DATA 2
@ -202,6 +206,10 @@ TftpSend (void)
sprintf((char *)pkt, "%lu", TIMEOUT / 1000);
debug("send option \"timeout %s\"\n", (char *)pkt);
pkt += strlen((char *)pkt) + 1;
#ifdef CONFIG_TFTP_TSIZE
memcpy((char *)pkt, "tsize\0000\0", 8);
pkt += 8;
#endif
/* try for more effic. blk size */
pkt += sprintf((char *)pkt,"blksize%c%d%c",
0,TftpBlkSizeOption,0);
@ -313,8 +321,14 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
simple_strtoul((char*)pkt+i+8,NULL,10);
debug("Blocksize ack: %s, %d\n",
(char*)pkt+i+8,TftpBlkSize);
break;
}
#ifdef CONFIG_TFTP_TSIZE
if (strcmp ((char*)pkt+i,"tsize") == 0) {
TftpTsize = simple_strtoul((char*)pkt+i+6,NULL,10);
debug("size = %s, %d\n",
(char*)pkt+i+6, TftpTsize);
}
#endif
}
#ifdef CONFIG_MCAST_TFTP
parse_multicast_oack((char *)pkt,len-1);
@ -340,7 +354,16 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
TftpBlockWrap++;
TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE;
printf ("\n\t %lu MB received\n\t ", TftpBlockWrapOffset>>20);
} else {
}
#ifdef CONFIG_TFTP_TSIZE
else if (TftpTsize) {
while (TftpNumchars < NetBootFileXferSize * 50 / TftpTsize) {
putc('#');
TftpNumchars++;
}
}
#endif
else {
if (((TftpBlock - 1) % 10) == 0) {
putc ('#');
} else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
@ -434,6 +457,13 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
* We received the whole thing. Try to
* run it.
*/
#ifdef CONFIG_TFTP_TSIZE
/* Print out the hash marks for the last packet received */
while (TftpTsize && TftpNumchars < 49) {
putc('#');
TftpNumchars++;
}
#endif
puts ("\ndone\n");
NetState = NETLOOP_SUCCESS;
}
@ -563,6 +593,10 @@ TftpStart (void)
#ifdef CONFIG_MCAST_TFTP
mcast_cleanup();
#endif
#ifdef CONFIG_TFTP_TSIZE
TftpTsize = 0;
TftpNumchars = 0;
#endif
TftpSend ();
}