tsn_gap_acked is an important state flag in chunk, which indicates if the
chunk has been acked in gap reports before. SFR-CACC algorithm depends on this
variable. So set this at the end of each iteration, otherwise the SFR-CACC
algorithm would never be toggled.

Signed-off-by: Chang Xiangzhong <changxiangzh...@gmail.com>
---
 net/sctp/outqueue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 1b494fa..bff828c 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1396,7 +1396,6 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                         * while DATA was outstanding).
                         */
                        if (!tchunk->tsn_gap_acked) {
-                               tchunk->tsn_gap_acked = 1;
                                if (TSN_lt(*highest_new_tsn_in_sack, tsn))
                                        *highest_new_tsn_in_sack = tsn;
                                bytes_acked += sctp_data_size(tchunk);
@@ -1460,6 +1459,8 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                                 */
                                list_add_tail(lchunk, &tlist);
                        }
+
+                       tchunk->tsn_gap_acked = 1;
                } else {
                        if (tchunk->tsn_gap_acked) {
                                pr_debug("%s: receiver reneged on data 
TSN:0x%x\n",
-- 
1.8.4.3

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