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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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14
net/sctp/socket.c
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@@ -1920,7 +1920,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
}
/* Check for invalid stream. */
if (sinfo->sinfo_stream >= asoc->stream->outcnt) {
if (sinfo->sinfo_stream >= asoc->stream.outcnt) {
err = -EINVAL;
goto out_free;
}
@@ -4497,8 +4497,8 @@ int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
info->sctpi_rwnd = asoc->a_rwnd;
info->sctpi_unackdata = asoc->unack_data;
info->sctpi_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
info->sctpi_instrms = asoc->stream->incnt;
info->sctpi_outstrms = asoc->stream->outcnt;
info->sctpi_instrms = asoc->stream.incnt;
info->sctpi_outstrms = asoc->stream.outcnt;
list_for_each(pos, &asoc->base.inqueue.in_chunk_list)
info->sctpi_inqueue++;
list_for_each(pos, &asoc->outqueue.out_chunk_list)
@@ -4727,8 +4727,8 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
status.sstat_unackdata = asoc->unack_data;
status.sstat_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
status.sstat_instrms = asoc->stream->incnt;
status.sstat_outstrms = asoc->stream->outcnt;
status.sstat_instrms = asoc->stream.incnt;
status.sstat_outstrms = asoc->stream.outcnt;
status.sstat_fragmentation_point = asoc->frag_point;
status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
memcpy(&status.sstat_primary.spinfo_address, &transport->ipaddr,
@@ -6600,10 +6600,10 @@ static int sctp_getsockopt_pr_streamstatus(struct sock *sk, int len,
goto out;
asoc = sctp_id2assoc(sk, params.sprstat_assoc_id);
if (!asoc || params.sprstat_sid >= asoc->stream->outcnt)
if (!asoc || params.sprstat_sid >= asoc->stream.outcnt)
goto out;
streamout = &asoc->stream->out[params.sprstat_sid];
streamout = &asoc->stream.out[params.sprstat_sid];
if (policy == SCTP_PR_SCTP_NONE) {
params.sprstat_abandoned_unsent = 0;
params.sprstat_abandoned_sent = 0;