sctp: Correctly implement Fast Recovery cwnd manipulations.
Correctly keep track of Fast Recovery state and do not reduce
congestion window multiple times during sucht state.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 917d425..6759207 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -902,7 +902,10 @@
* calculation completes (i.e. the DATA chunk
* is SACK'd) clear this flag.
*/
- int rto_pending;
+ __u8 rto_pending;
+
+ /* Flag to track the current fast recovery state */
+ __u8 fast_recovery;
/*
* These are the congestion stats.
@@ -921,6 +924,9 @@
/* Data that has been sent, but not acknowledged. */
__u32 flight_size;
+ /* TSN marking the fast recovery exit point */
+ __u32 fast_recovery_exit;
+
/* Destination */
struct dst_entry *dst;
/* Source address. */