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-rw-r--r--net/sctp/transport.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 04b6dd1a07de..9d3589451a96 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -406,11 +406,10 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport,
asoc->fast_recovery = 0;
/* The appropriate cwnd increase algorithm is performed if, and only
- * if the cumulative TSN whould advanced and the congestion window is
- * being fully utilized.
+ * if the congestion window is being fully utilized.
+ * Note that RFC4960 Errata 3.22 removed the other condition.
*/
- if (TSN_lte(sack_ctsn, transport->asoc->ctsn_ack_point) ||
- (flight_size < cwnd))
+ if (flight_size < cwnd)
return;
ssthresh = transport->ssthresh;
@@ -446,11 +445,11 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport,
flight_size, pba);
} else {
/* RFC 2960 7.2.2 Whenever cwnd is greater than ssthresh,
- * upon each SACK arrival that advances the Cumulative TSN Ack
- * Point, increase partial_bytes_acked by the total number of
- * bytes of all new chunks acknowledged in that SACK including
- * chunks acknowledged by the new Cumulative TSN Ack and by
- * Gap Ack Blocks.
+ * upon each SACK arrival, increase partial_bytes_acked
+ * by the total number of bytes of all new chunks
+ * acknowledged in that SACK including chunks
+ * acknowledged by the new Cumulative TSN Ack and by Gap
+ * Ack Blocks. (updated by RFC4960 Errata 3.22)
*
* When partial_bytes_acked is equal to or greater than
* cwnd and before the arrival of the SACK the sender