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tftp: add timeframe when remote server is retransmitting 

If there's packet loss and the remote server needs to retransmit,
there is falsely no timeframe left because TIMEOUT (server wait time)
and TFTP_TIMEOUT (abort timer) are the same.

This patch increases TFTP_TIMEOUT.

See RFC2349 for more info: http://tools.ietf.org/html/rfc2349

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Christoph Fritz 2014-04-30 10:32:01 +02:00 committed by Sascha Hauer
parent ece46dd3fc
commit 5dafef6aaf
1 changed files with 5 additions and 3 deletions
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8
fs/tftp.c
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@ -33,14 +33,16 @@
#include <kfifo.h>
#include <sizes.h>
#define TFTP_PORT 69 /* Well known TFTP port # */
#define TIMEOUT 5 /* Seconds to timeout for a lost pkt */
#define TFTP_PORT 69 /* Well known TFTP port number */
/* Seconds to wait before remote server is allowed to resend a lost packet */
#define TIMEOUT 5
/* After this time without a response from the server we will resend a packet */
#define TFTP_RESEND_TIMEOUT SECOND
/* After this time without progress we will bail out */
#define TFTP_TIMEOUT (TIMEOUT * SECOND)
#define TFTP_TIMEOUT ((TIMEOUT * 3) * SECOND)
/*
* TFTP operations.