[SCTP]: Fix 'fast retransmit' to send a TSN only once.

SCTP used to "fast retransmit" a TSN every time we hit the number
of missing reports for the TSN.  However the Implementers Guide
specifies that we should only "fast retransmit" a given TSN once.
Subsequent retransmits should be timeouts only. Also change the
number of missing reports to 3 as per the latest IG(similar to TCP).

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 8c522ae031bb..072f407848a6 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -700,7 +700,7 @@ struct sctp_chunk {
         __u8 ecn_ce_done;       /* Have we processed the ECN CE bit? */
         __u8 pdiscard;          /* Discard the whole packet now? */
         __u8 tsn_gap_acked;     /* Is this chunk acked by a GAP ACK? */
-        __u8 fast_retransmit;    /* Is this chunk fast retransmitted? */
+        __s8 fast_retransmit;    /* Is this chunk fast retransmitted? */
         __u8 tsn_missing_report; /* Data chunk missing counter. */
 };