[SCTP] Reset rtt_in_progress for the chunk when processing its sack.

Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: NSridhar Samudrala <sri@us.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/sctp/sctp.h

@@ -255,7 +255,7 @@ extern int sctp_debug_flag;
 #define SCTP_DEBUG_PRINTK_IPADDR(whatever...)
 #define SCTP_ENABLE_DEBUG
 #define SCTP_DISABLE_DEBUG
-#define SCTP_ASSERT(expr, str, func)
+#define SCTP_ASSERT(expr, str, func) BUG_ON(!(expr))
 
 #endif /* SCTP_DEBUG */
 

net/sctp/outqueue.c

@@ -1262,6 +1262,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
 			   	if (!tchunk->tsn_gap_acked &&
 				    !tchunk->resent &&
 				    tchunk->rtt_in_progress) {
+					tchunk->rtt_in_progress = 0;
 					rtt = jiffies - tchunk->sent_at;
 					sctp_transport_update_rto(transport,
 								  rtt);