diff options
| -rw-r--r-- | net/tftp.c | 28 |
1 files changed, 24 insertions, 4 deletions
@@ -34,6 +34,21 @@ #define TFTP_ERROR 5 #define TFTP_OACK 6 +static ulong TftpTimeoutMSecs = TIMEOUT; +static int TftpTimeoutCountMax = TIMEOUT_COUNT; + +/* + * These globals govern the timeout behavior when attempting a connection to a + * TFTP server. TftpRRQTimeoutMSecs specifies the number of milliseconds to + * wait for the server to respond to initial connection. Second global, + * TftpRRQTimeoutCountMax, gives the number of such connection retries. + * TftpRRQTimeoutCountMax must be non-negative and TftpRRQTimeoutMSecs must be + * positive. The globals are meant to be set (and restored) by code needing + * non-standard timeout behavior when initiating a TFTP transfer. + */ +ulong TftpRRQTimeoutMSecs = TIMEOUT; +int TftpRRQTimeoutCountMax = TIMEOUT_COUNT; + static IPaddr_t TftpServerIP; static int TftpServerPort; /* The UDP port at their end */ static int TftpOurPort; /* The UDP port at our end */ @@ -370,7 +385,9 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) } TftpLastBlock = TftpBlock; - NetSetTimeout (TIMEOUT, TftpTimeout); + TftpTimeoutMSecs = TIMEOUT; + TftpTimeoutCountMax = TIMEOUT_COUNT; + NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); store_block (TftpBlock - 1, pkt + 2, len); @@ -441,7 +458,7 @@ TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) static void TftpTimeout (void) { - if (++TftpTimeoutCount > TIMEOUT_COUNT) { + if (++TftpTimeoutCount > TftpTimeoutCountMax) { puts ("\nRetry count exceeded; starting again\n"); #ifdef CONFIG_MCAST_TFTP mcast_cleanup(); @@ -449,7 +466,7 @@ TftpTimeout (void) NetStartAgain (); } else { puts ("T "); - NetSetTimeout (TIMEOUT, TftpTimeout); + NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); TftpSend (); } } @@ -520,7 +537,10 @@ TftpStart (void) puts ("Loading: *\b"); - NetSetTimeout (TIMEOUT, TftpTimeout); + TftpTimeoutMSecs = TftpRRQTimeoutMSecs; + TftpTimeoutCountMax = TftpRRQTimeoutCountMax; + + NetSetTimeout (TftpTimeoutMSecs, TftpTimeout); NetSetHandler (TftpHandler); TftpServerPort = WELL_KNOWN_PORT; |