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Diffstat (limited to 'net/sctp/sm_sideeffect.c')
-rw-r--r--net/sctp/sm_sideeffect.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index b083312c725a..9732c797e8ed 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -664,7 +664,7 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *cmds,
struct sctp_association *asoc,
struct sctp_sackhdr *sackh)
{
- int err;
+ int err = 0;
if (sctp_outq_sack(&asoc->outqueue, sackh)) {
/* There are no more TSNs awaiting SACK. */
@@ -672,11 +672,6 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *cmds,
SCTP_ST_OTHER(SCTP_EVENT_NO_PENDING_TSN),
asoc->state, asoc->ep, asoc, NULL,
GFP_ATOMIC);
- } else {
- /* Windows may have opened, so we need
- * to check if we have DATA to transmit
- */
- err = sctp_outq_flush(&asoc->outqueue, 0);
}
return err;
@@ -1481,8 +1476,15 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
break;
case SCTP_CMD_DISCARD_PACKET:
- /* We need to discard the whole packet. */
+ /* We need to discard the whole packet.
+ * Uncork the queue since there might be
+ * responses pending
+ */
chunk->pdiscard = 1;
+ if (asoc) {
+ sctp_outq_uncork(&asoc->outqueue);
+ local_cork = 0;
+ }
break;
case SCTP_CMD_RTO_PENDING:
@@ -1553,8 +1555,15 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
}
out:
- if (local_cork)
- sctp_outq_uncork(&asoc->outqueue);
+ /* If this is in response to a received chunk, wait until
+ * we are done with the packet to open the queue so that we don't
+ * send multiple packets in response to a single request.
+ */
+ if (asoc && SCTP_EVENT_T_CHUNK == event_type && chunk) {
+ if (chunk->end_of_packet || chunk->singleton)
+ sctp_outq_uncork(&asoc->outqueue);
+ } else if (local_cork)
+ sctp_outq_uncork(&asoc->outqueue);
return error;
nomem:
error = -ENOMEM;