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-rw-r--r--net/sctp/ulpqueue.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index d300f4973a79..5061a26c5028 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -874,6 +874,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
struct sctp_ulpevent *event;
struct sctp_stream *in;
struct sk_buff_head temp;
+ struct sk_buff_head *lobby = &ulpq->lobby;
__u16 csid, cssn;
in = &ulpq->asoc->ssnmap->in;
@@ -881,7 +882,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
/* We are holding the chunks by stream, by SSN. */
skb_queue_head_init(&temp);
event = NULL;
- sctp_skb_for_each(pos, &ulpq->lobby, tmp) {
+ sctp_skb_for_each(pos, lobby, tmp) {
cevent = (struct sctp_ulpevent *) pos->cb;
csid = cevent->stream;
cssn = cevent->ssn;
@@ -895,10 +896,10 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
continue;
/* see if this ssn has been marked by skipping */
- if (!SSN_lte(cssn, sctp_ssn_peek(in, csid)))
+ if (!SSN_lt(cssn, sctp_ssn_peek(in, csid)))
break;
- __skb_unlink(pos, &ulpq->lobby);
+ __skb_unlink(pos, lobby);
if (!event)
/* Create a temporary list to collect chunks on. */
event = sctp_skb2event(pos);
@@ -907,6 +908,22 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
__skb_queue_tail(&temp, pos);
}
+ /* If we didn't reap any data, see if the next expected SSN
+ * is next on the queue and if so, use that.
+ */
+ if (event == NULL && pos != (struct sk_buff *)lobby) {
+ cevent = (struct sctp_ulpevent *) pos->cb;
+ csid = cevent->stream;
+ cssn = cevent->ssn;
+
+ if (csid == sid && cssn == sctp_ssn_peek(in, csid)) {
+ sctp_ssn_next(in, csid);
+ __skb_unlink(pos, lobby);
+ __skb_queue_tail(&temp, pos);
+ event = sctp_skb2event(pos);
+ }
+ }
+
/* Send event to the ULP. 'event' is the sctp_ulpevent for
* very first SKB on the 'temp' list.
*/
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