Stream arrays are used to save per stream information, which includes
ssn for each stream already.
This patch is to replace ssnmap with asoc stream arrays.
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
---
include/net/sctp/structs.h | 19 ++++++-------------
net/sctp/associola.c | 10 ----------
net/sctp/sm_make_chunk.c | 11 ++---------
net/sctp/sm_statefuns.c | 3 +--
net/sctp/ulpqueue.c | 33 +++++++++++----------------------
5 files changed, 20 insertions(+), 56 deletions(-)
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 549f17d..f81c321 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -407,23 +407,16 @@ void sctp_ssnmap_free(struct sctp_ssnmap *map);
void sctp_ssnmap_clear(struct sctp_ssnmap *map);
/* What is the current SSN number for this stream? */
-static inline __u16 sctp_ssn_peek(struct sctp_stream *stream, __u16 id)
-{
- return stream->ssn[id];
-}
+#define sctp_ssn_peek(asoc, type, sid) \
+ ((asoc)->stream##type[sid].ssn)
/* Return the next SSN number for this stream. */
-static inline __u16 sctp_ssn_next(struct sctp_stream *stream, __u16 id)
-{
- return stream->ssn[id]++;
-}
+#define sctp_ssn_next(asoc, type, sid) \
+ ((asoc)->stream##type[sid].ssn++)
/* Skip over this ssn and all below. */
-static inline void sctp_ssn_skip(struct sctp_stream *stream, __u16 id,
- __u16 ssn)
-{
- stream->ssn[id] = ssn+1;
-}
+#define sctp_ssn_skip(asoc, type, sid, ssn) \
+ ((asoc)->stream##type[sid].ssn = ssn + 1)
/*
* Pointers to address related SCTP functions.
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 290ec4d..ea03270 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -358,9 +358,6 @@ void sctp_association_free(struct sctp_association *asoc)
sctp_tsnmap_free(&asoc->peer.tsn_map);
- /* Free ssnmap storage. */
- sctp_ssnmap_free(asoc->ssnmap);
-
/* Free stream information. */
kfree(asoc->streamout);
kfree(asoc->streamin);
@@ -1143,8 +1140,6 @@ void sctp_assoc_update(struct sctp_association *asoc,
/* Reinitialize SSN for both local streams
* and peer's streams.
*/
- sctp_ssnmap_clear(asoc->ssnmap);
-
for (i = 0; i < asoc->streamoutcnt; i++)
asoc->streamout[i].ssn = 0;
@@ -1174,11 +1169,6 @@ void sctp_assoc_update(struct sctp_association *asoc,
asoc->ctsn_ack_point = asoc->next_tsn - 1;
asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
- if (!asoc->ssnmap) {
- /* Move the ssnmap. */
- asoc->ssnmap = new->ssnmap;
- new->ssnmap = NULL;
- }
if (!asoc->streamin && !asoc->streamout) {
asoc->streamout = new->streamout;
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index eeadeef..78cbd1b 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1527,7 +1527,6 @@ void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)
{
struct sctp_datamsg *msg;
struct sctp_chunk *lchunk;
- struct sctp_stream *stream;
__u16 ssn;
__u16 sid;
@@ -1536,7 +1535,6 @@ void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)
/* All fragments will be on the same stream */
sid = ntohs(chunk->subh.data_hdr->stream);
- stream = &chunk->asoc->ssnmap->out;
/* Now assign the sequence number to the entire message.
* All fragments must have the same stream sequence number.
@@ -1547,9 +1545,9 @@ void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)
ssn = 0;
} else {
if (lchunk->chunk_hdr->flags & SCTP_DATA_LAST_FRAG)
- ssn = sctp_ssn_next(stream, sid);
+ ssn = sctp_ssn_next(chunk->asoc, out, sid);
else
- ssn = sctp_ssn_peek(stream, sid);
+ ssn = sctp_ssn_peek(chunk->asoc, out, sid);
}
lchunk->subh.data_hdr->ssn = htons(ssn);
@@ -2447,11 +2445,6 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
asoc->streamoutcnt = asoc->c.sinit_num_ostreams;
asoc->streamincnt = asoc->c.sinit_max_instreams;
- asoc->ssnmap = sctp_ssnmap_new(asoc->c.sinit_max_instreams,
- asoc->c.sinit_num_ostreams, gfp);
- if (!asoc->ssnmap)
- goto clean_up;
-
asoc->streamout = kcalloc(asoc->streamoutcnt,
sizeof(*asoc->streamout), gfp);
if (!asoc->streamout)
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 3382ef2..8a130a7 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -6274,9 +6274,8 @@ static int sctp_eat_data(const struct sctp_association *asoc,
* and is invalid.
*/
ssn = ntohs(data_hdr->ssn);
- if (ordered && SSN_lt(ssn, sctp_ssn_peek(&asoc->ssnmap->in, sid))) {
+ if (ordered && SSN_lt(ssn, sctp_ssn_peek(asoc, in, sid)))
return SCTP_IERROR_PROTO_VIOLATION;
- }
/* Send the data up to the user. Note: Schedule the
* SCTP_CMD_CHUNK_ULP cmd before the SCTP_CMD_GEN_SACK, as the SACK
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index 84d0fda..0d8bf26 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -760,11 +760,9 @@ static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
struct sk_buff_head *event_list;
struct sk_buff *pos, *tmp;
struct sctp_ulpevent *cevent;
- struct sctp_stream *in;
__u16 sid, csid, cssn;
sid = event->stream;
- in = &ulpq->asoc->ssnmap->in;
event_list = (struct sk_buff_head *) sctp_event2skb(event)->prev;
@@ -782,11 +780,11 @@ static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
if (csid < sid)
continue;
- if (cssn != sctp_ssn_peek(in, sid))
+ if (cssn != sctp_ssn_peek(ulpq->asoc, in, sid))
break;
- /* Found it, so mark in the ssnmap. */
- sctp_ssn_next(in, sid);
+ /* Found it, so mark in stream array. */
+ sctp_ssn_next(ulpq->asoc, in, sid);
__skb_unlink(pos, &ulpq->lobby);
@@ -849,7 +847,6 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event)
{
__u16 sid, ssn;
- struct sctp_stream *in;
/* Check if this message needs ordering. */
if (SCTP_DATA_UNORDERED & event->msg_flags)
@@ -858,10 +855,9 @@ 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;
- in = &ulpq->asoc->ssnmap->in;
/* Is this the expected SSN for this stream ID? */
- if (ssn != sctp_ssn_peek(in, sid)) {
+ if (ssn != sctp_ssn_peek(ulpq->asoc, in, sid)) {
/* We've received something out of order, so find where it
* needs to be placed. We order by stream and then by SSN.
*/
@@ -870,7 +866,7 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
}
/* Mark that the next chunk has been found. */
- sctp_ssn_next(in, sid);
+ sctp_ssn_next(ulpq->asoc, in, sid);
/* Go find any other chunks that were waiting for
* ordering.
@@ -888,13 +884,10 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
struct sk_buff *pos, *tmp;
struct sctp_ulpevent *cevent;
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;
-
/* We are holding the chunks by stream, by SSN. */
skb_queue_head_init(&temp);
event = NULL;
@@ -912,7 +905,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
continue;
/* see if this ssn has been marked by skipping */
- if (!SSN_lt(cssn, sctp_ssn_peek(in, csid)))
+ if (!SSN_lt(cssn, sctp_ssn_peek(ulpq->asoc, in, csid)))
break;
__skb_unlink(pos, lobby);
@@ -932,8 +925,9 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
csid = cevent->stream;
cssn = cevent->ssn;
- if (csid == sid && cssn == sctp_ssn_peek(in, csid)) {
- sctp_ssn_next(in, csid);
+ if (csid == sid &&
+ cssn == sctp_ssn_peek(ulpq->asoc, in, csid)) {
+ sctp_ssn_next(ulpq->asoc, in, csid);
__skb_unlink(pos, lobby);
__skb_queue_tail(&temp, pos);
event = sctp_skb2event(pos);
@@ -955,17 +949,12 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
*/
void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn)
{
- struct sctp_stream *in;
-
- /* Note: The stream ID must be verified before this routine. */
- in = &ulpq->asoc->ssnmap->in;
-
/* Is this an old SSN? If so ignore. */
- if (SSN_lt(ssn, sctp_ssn_peek(in, sid)))
+ if (SSN_lt(ssn, sctp_ssn_peek(ulpq->asoc, in, sid)))
return;
/* Mark that we are no longer expecting this SSN or lower. */
- sctp_ssn_skip(in, sid, ssn);
+ sctp_ssn_skip(ulpq->asoc, in, sid, ssn);
/* Go find any other chunks that were waiting for
* ordering and deliver them if needed.
--
2.1.0
--
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