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-rw-r--r--net/sctp/outqueue.c33
1 files changed, 17 insertions, 16 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index e315c6c756ca..99a3db5d5fae 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -382,7 +382,7 @@ static void sctp_insert_list(struct list_head *head, struct list_head *new)
382/* Mark all the eligible packets on a transport for retransmission. */ 382/* Mark all the eligible packets on a transport for retransmission. */
383void sctp_retransmit_mark(struct sctp_outq *q, 383void sctp_retransmit_mark(struct sctp_outq *q,
384 struct sctp_transport *transport, 384 struct sctp_transport *transport,
385 __u8 fast_retransmit) 385 __u8 reason)
386{ 386{
387 struct list_head *lchunk, *ltemp; 387 struct list_head *lchunk, *ltemp;
388 struct sctp_chunk *chunk; 388 struct sctp_chunk *chunk;
@@ -412,20 +412,20 @@ void sctp_retransmit_mark(struct sctp_outq *q,
412 continue; 412 continue;
413 } 413 }
414 414
415 /* If we are doing retransmission due to a fast retransmit, 415 /* If we are doing retransmission due to a timeout or pmtu
416 * only the chunk's that are marked for fast retransmit 416 * discovery, only the chunks that are not yet acked should
417 * should be added to the retransmit queue. If we are doing 417 * be added to the retransmit queue.
418 * retransmission due to a timeout or pmtu discovery, only the
419 * chunks that are not yet acked should be added to the
420 * retransmit queue.
421 */ 418 */
422 if ((fast_retransmit && (chunk->fast_retransmit > 0)) || 419 if ((reason == SCTP_RTXR_FAST_RTX &&
423 (!fast_retransmit && !chunk->tsn_gap_acked)) { 420 (chunk->fast_retransmit > 0)) ||
421 (reason != SCTP_RTXR_FAST_RTX && !chunk->tsn_gap_acked)) {
424 /* If this chunk was sent less then 1 rto ago, do not 422 /* If this chunk was sent less then 1 rto ago, do not
425 * retransmit this chunk, but give the peer time 423 * retransmit this chunk, but give the peer time
426 * to acknowlege it. 424 * to acknowlege it. Do this only when
425 * retransmitting due to T3 timeout.
427 */ 426 */
428 if ((jiffies - chunk->sent_at) < transport->rto) 427 if (reason == SCTP_RTXR_T3_RTX &&
428 (jiffies - chunk->sent_at) < transport->last_rto)
429 continue; 429 continue;
430 430
431 /* RFC 2960 6.2.1 Processing a Received SACK 431 /* RFC 2960 6.2.1 Processing a Received SACK
@@ -467,10 +467,10 @@ void sctp_retransmit_mark(struct sctp_outq *q,
467 } 467 }
468 } 468 }
469 469
470 SCTP_DEBUG_PRINTK("%s: transport: %p, fast_retransmit: %d, " 470 SCTP_DEBUG_PRINTK("%s: transport: %p, reason: %d, "
471 "cwnd: %d, ssthresh: %d, flight_size: %d, " 471 "cwnd: %d, ssthresh: %d, flight_size: %d, "
472 "pba: %d\n", __FUNCTION__, 472 "pba: %d\n", __FUNCTION__,
473 transport, fast_retransmit, 473 transport, reason,
474 transport->cwnd, transport->ssthresh, 474 transport->cwnd, transport->ssthresh,
475 transport->flight_size, 475 transport->flight_size,
476 transport->partial_bytes_acked); 476 transport->partial_bytes_acked);
@@ -484,7 +484,6 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
484 sctp_retransmit_reason_t reason) 484 sctp_retransmit_reason_t reason)
485{ 485{
486 int error = 0; 486 int error = 0;
487 __u8 fast_retransmit = 0;
488 487
489 switch(reason) { 488 switch(reason) {
490 case SCTP_RTXR_T3_RTX: 489 case SCTP_RTXR_T3_RTX:
@@ -499,16 +498,18 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
499 case SCTP_RTXR_FAST_RTX: 498 case SCTP_RTXR_FAST_RTX:
500 SCTP_INC_STATS(SCTP_MIB_FAST_RETRANSMITS); 499 SCTP_INC_STATS(SCTP_MIB_FAST_RETRANSMITS);
501 sctp_transport_lower_cwnd(transport, SCTP_LOWER_CWND_FAST_RTX); 500 sctp_transport_lower_cwnd(transport, SCTP_LOWER_CWND_FAST_RTX);
502 fast_retransmit = 1;
503 break; 501 break;
504 case SCTP_RTXR_PMTUD: 502 case SCTP_RTXR_PMTUD:
505 SCTP_INC_STATS(SCTP_MIB_PMTUD_RETRANSMITS); 503 SCTP_INC_STATS(SCTP_MIB_PMTUD_RETRANSMITS);
506 break; 504 break;
505 case SCTP_RTXR_T1_RTX:
506 SCTP_INC_STATS(SCTP_MIB_T1_RETRANSMITS);
507 break;
507 default: 508 default:
508 BUG(); 509 BUG();
509 } 510 }
510 511
511 sctp_retransmit_mark(q, transport, fast_retransmit); 512 sctp_retransmit_mark(q, transport, reason);
512 513
513 /* PR-SCTP A5) Any time the T3-rtx timer expires, on any destination, 514 /* PR-SCTP A5) Any time the T3-rtx timer expires, on any destination,
514 * the sender SHOULD try to advance the "Advanced.Peer.Ack.Point" by 515 * the sender SHOULD try to advance the "Advanced.Peer.Ack.Point" by