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sctp: define the member stream as an object instead of pointer in asoc

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As Marcelo's suggestion, stream is a fixed size member of asoc and would
not grow with more streams. To avoid an allocation for it, this patch is
to define it as an object instead of pointer and update the places using
it, also create sctp_stream_update() called in sctp_assoc_update() to
migrate the stream info from one stream to another.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2017-05-31 16:36:31 +08:00
committed by David S. Miller
parent 6e7da286e3
commit cee360ab4d
10 changed files with 65 additions and 69 deletions
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8
net/sctp/ulpqueue.c
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@@ -764,7 +764,7 @@ static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
__u16 sid, csid, cssn;
sid = event->stream;
stream = ulpq->asoc->stream;
stream = &ulpq->asoc->stream;
event_list = (struct sk_buff_head *) sctp_event2skb(event)->prev;
@@ -858,7 +858,7 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
/* Note: The stream ID must be verified before this routine. */
sid = event->stream;
ssn = event->ssn;
stream = ulpq->asoc->stream;
stream = &ulpq->asoc->stream;
/* Is this the expected SSN for this stream ID? */
if (ssn != sctp_ssn_peek(stream, in, sid)) {
@@ -893,7 +893,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
struct sk_buff_head *lobby = &ulpq->lobby;
__u16 csid, cssn;
stream = ulpq->asoc->stream;
stream = &ulpq->asoc->stream;
/* We are holding the chunks by stream, by SSN. */
skb_queue_head_init(&temp);
@@ -958,7 +958,7 @@ void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn)
struct sctp_stream *stream;
/* Note: The stream ID must be verified before this routine. */
stream = ulpq->asoc->stream;
stream = &ulpq->asoc->stream;
/* Is this an old SSN? If so ignore. */
if (SSN_lt(ssn, sctp_ssn_peek(stream, in, sid)))