1 files changed, 24 insertions, 12 deletions

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index c9f20e28521b..229690f02a1d 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -191,8 +191,8 @@ static inline int sctp_cacc_skip(struct sctp_transport *primary,
                                  __u32 tsn)
 {
         if (primary->cacc.changeover_active &&
-            (sctp_cacc_skip_3_1(primary, transport, count_of_newacks)
-             || sctp_cacc_skip_3_2(primary, tsn)))
+            (sctp_cacc_skip_3_1(primary, transport, count_of_newacks) ||
+             sctp_cacc_skip_3_2(primary, tsn)))
                 return 1;
         return 0;
 }
@@ -423,16 +423,6 @@ void sctp_retransmit_mark(struct sctp_outq *q,
                 if ((reason == SCTP_RTXR_FAST_RTX  &&
                             (chunk->fast_retransmit == SCTP_NEED_FRTX)) ||
                     (reason != SCTP_RTXR_FAST_RTX  && !chunk->tsn_gap_acked)) {
-                        /* If this chunk was sent less then 1 rto ago, do not
-                         * retransmit this chunk, but give the peer time
-                         * to acknowlege it.  Do this only when
-                         * retransmitting due to T3 timeout.
-                         */
-                        if (reason == SCTP_RTXR_T3_RTX &&
-                            time_before(jiffies, chunk->sent_at +
-                                                 transport->last_rto))
-                                continue;
-
                         /* RFC 2960 6.2.1 Processing a Received SACK
                          *
                          * C) Any time a DATA chunk is marked for
@@ -931,6 +921,14 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                                 goto sctp_flush_out;
                 }
 
+                /* Apply Max.Burst limitation to the current transport in
+                 * case it will be used for new data.  We are going to
+                 * rest it before we return, but we want to apply the limit
+                 * to the currently queued data.
+                 */
+                if (transport)
+                        sctp_transport_burst_limited(transport);
+
                 /* Finally, transmit new packets.  */
                 while ((chunk = sctp_outq_dequeue_data(q)) != NULL) {
                         /* RFC 2960 6.5 Every DATA chunk MUST carry a valid
@@ -976,6 +974,10 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                                 packet = &transport->packet;
                                 sctp_packet_config(packet, vtag,
                                                    asoc->peer.ecn_capable);
+                                /* We've switched transports, so apply the
+                                 * Burst limit to the new transport.
+                                 */
+                                sctp_transport_burst_limited(transport);
                         }
 
                         SCTP_DEBUG_PRINTK("sctp_outq_flush(%p, %p[%s]), ",
@@ -1011,6 +1013,13 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                                 break;
 
                         case SCTP_XMIT_OK:
+                                /* The sender is in the SHUTDOWN-PENDING state,
+                                 * The sender MAY set the I-bit in the DATA
+                                 * chunk header.
+                                 */
+                                if (asoc->state == SCTP_STATE_SHUTDOWN_PENDING)
+                                        chunk->chunk_hdr->flags |= SCTP_DATA_SACK_IMM;
+
                                 break;
 
                         default:
@@ -1063,6 +1072,9 @@ sctp_flush_out:
                 packet = &t->packet;
                 if (!sctp_packet_empty(packet))
                         error = sctp_packet_transmit(packet);
+
+                /* Clear the burst limited state, if any */
+                sctp_transport_burst_reset(t);
         }
 
         return error;