[PATCH 01/13] net: tftp: Increase TFTP pkt string length to include null character

[Chintan Vankar]

'sprintf()' function defined in 'tiny-printf.c' is returning length of the
string excluding null character. Fix this by increasing TFTP pkt length by
1 to avoid TFTP error of request being not-null terminated while
requesting length of packet.

Signed-off-by: Chintan Vankar <c-van...@ti.com>
---
 net/tftp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/tftp.c b/net/tftp.c
index 704b20b4ff8..db1d4aacb0e 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -347,11 +347,11 @@ static void tftp_send(void)
                pkt += strlen((char *)pkt) + 1;
 #ifdef CONFIG_TFTP_TSIZE
                pkt += sprintf((char *)pkt, "tsize%c%u%c",
-                               0, net_boot_file_size, 0);
+                               0, net_boot_file_size, 0) + 1;
 #endif
                /* try for more effic. blk size */
                pkt += sprintf((char *)pkt, "blksize%c%d%c",
-                               0, tftp_block_size_option, 0);
+                               0, tftp_block_size_option, 0) + 1;
 
                /* try for more effic. window size.
                 * Implemented only for tftp get.
@@ -359,7 +359,7 @@ static void tftp_send(void)
                 */
                if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
                        pkt += sprintf((char *)pkt, "windowsize%c%d%c",
-                                       0, tftp_window_size_option, 0);
+                                       0, tftp_window_size_option, 0) + 1;
                len = pkt - xp;
                break;
 
-- 
2.34.1