mirror of
https://github.com/xcat2/xcat-dep.git
synced 2024-12-25 12:41:33 +00:00
49 lines
1.5 KiB
Diff
49 lines
1.5 KiB
Diff
From: Stefan Hajnoczi <stefanha@gmail.com>
|
|
Date: Sun, 10 Jan 2010 19:05:17 +0000 (+0000)
|
|
Subject: [tftp] Allow fetching larger files by wrapping block number
|
|
X-Git-Url: http://git.etherboot.org/?p=gpxe.git;a=commitdiff_plain;h=dd99ee95cb513384a13c2be486f684e4a1606ea9
|
|
|
|
[tftp] Allow fetching larger files by wrapping block number
|
|
|
|
This patch adds TFTP support for files larger than 65535 blocks by
|
|
wrapping the 16-bit block number.
|
|
|
|
Reported-by: Mark Johnson <johnson.nh@gmail.com>
|
|
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
|
|
Signed-off-by: Marty Connor <mdc@etherboot.org>
|
|
---
|
|
|
|
diff --git a/src/net/udp/tftp.c b/src/net/udp/tftp.c
|
|
index bb031ec..82055fc 100644
|
|
--- a/src/net/udp/tftp.c
|
|
+++ b/src/net/udp/tftp.c
|
|
@@ -747,7 +747,7 @@ static int tftp_rx_data ( struct tftp_request *tftp,
|
|
struct io_buffer *iobuf ) {
|
|
struct tftp_data *data = iobuf->data;
|
|
struct xfer_metadata meta;
|
|
- int block;
|
|
+ unsigned int block;
|
|
off_t offset;
|
|
size_t data_len;
|
|
int rc;
|
|
@@ -759,14 +759,17 @@ static int tftp_rx_data ( struct tftp_request *tftp,
|
|
rc = -EINVAL;
|
|
goto done;
|
|
}
|
|
- if ( data->block == 0 ) {
|
|
+
|
|
+ /* Calculate block number */
|
|
+ block = ( ( bitmap_first_gap ( &tftp->bitmap ) + 1 ) & ~0xffff );
|
|
+ if ( data->block == 0 && block == 0 ) {
|
|
DBGC ( tftp, "TFTP %p received data block 0\n", tftp );
|
|
rc = -EINVAL;
|
|
goto done;
|
|
}
|
|
+ block += ( ntohs ( data->block ) - 1 );
|
|
|
|
/* Extract data */
|
|
- block = ( ntohs ( data->block ) - 1 );
|
|
offset = ( block * tftp->blksize );
|
|
iob_pull ( iobuf, sizeof ( *data ) );
|
|
data_len = iob_len ( iobuf );
|