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

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 697721a7a3f1..81466f6442e8 100644
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -307,7 +307,7 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
         if (SCTP_PR_TTL_ENABLED(chunk->sinfo.sinfo_flags) &&
             time_after(jiffies, chunk->msg->expires_at)) {
                 struct sctp_stream_out *streamout =
-                        &chunk->asoc->stream->out[chunk->sinfo.sinfo_stream];
+                        &chunk->asoc->stream.out[chunk->sinfo.sinfo_stream];
 
                 if (chunk->sent_count) {
                         chunk->asoc->abandoned_sent[SCTP_PR_INDEX(TTL)]++;
@@ -320,7 +320,7 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
         } else if (SCTP_PR_RTX_ENABLED(chunk->sinfo.sinfo_flags) &&
                    chunk->sent_count > chunk->sinfo.sinfo_timetolive) {
                 struct sctp_stream_out *streamout =
-                        &chunk->asoc->stream->out[chunk->sinfo.sinfo_stream];
+                        &chunk->asoc->stream.out[chunk->sinfo.sinfo_stream];
 
                 chunk->asoc->abandoned_sent[SCTP_PR_INDEX(RTX)]++;
                 streamout->abandoned_sent[SCTP_PR_INDEX(RTX)]++;