[PATCHv2 net-next 08/12] sctp: implement enqueue_event for sctp_stream_interleave

[Xin Long]

enqueue_event is added as a member of sctp_stream_interleave, used to
enqueue either data, idata or notification events into user socket rx
queue.

It replaces sctp_ulpq_tail_event used in the other places with
enqueue_event.

Signed-off-by: Xin Long <lucien....@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leit...@gmail.com>
Acked-by: Neil Horman <nhor...@tuxdriver.com>
---
 include/net/sctp/stream_interleave.h | 2 ++
 net/sctp/associola.c                 | 2 +-
 net/sctp/chunk.c                     | 2 +-
 net/sctp/sm_sideeffect.c             | 9 +++++----
 net/sctp/socket.c                    | 2 +-
 net/sctp/stream_interleave.c         | 2 ++
 6 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/include/net/sctp/stream_interleave.h 
b/include/net/sctp/stream_interleave.h
index 02f60f5..a0f61bc 100644
--- a/include/net/sctp/stream_interleave.h
+++ b/include/net/sctp/stream_interleave.h
@@ -41,6 +41,8 @@ struct sctp_stream_interleave {
        bool    (*validate_data)(struct sctp_chunk *chunk);
        int     (*ulpevent_data)(struct sctp_ulpq *ulpq,
                                 struct sctp_chunk *chunk, gfp_t gfp);
+       int     (*enqueue_event)(struct sctp_ulpq *ulpq,
+                                struct sctp_ulpevent *event);
 };
 
 void sctp_stream_interleave_init(struct sctp_stream *stream);
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 69394f4..837806d 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -861,7 +861,7 @@ void sctp_assoc_control_transport(struct sctp_association 
*asoc,
                event = sctp_ulpevent_make_peer_addr_change(asoc, &addr,
                                        0, spc_state, error, GFP_ATOMIC);
                if (event)
-                       sctp_ulpq_tail_event(&asoc->ulpq, event);
+                       asoc->stream.si->enqueue_event(&asoc->ulpq, event);
        }
 
        /* Select new active and retran paths. */
diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 62adaaa..991a530 100644
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -124,7 +124,7 @@ static void sctp_datamsg_destroy(struct sctp_datamsg *msg)
                        ev = sctp_ulpevent_make_send_failed(asoc, chunk, sent,
                                                            error, GFP_ATOMIC);
                        if (ev)
-                               sctp_ulpq_tail_event(&asoc->ulpq, ev);
+                               asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
                }
 
                sctp_chunk_put(chunk);
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 9d25efb..f4e5eca 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -972,7 +972,7 @@ static void sctp_cmd_process_operr(struct sctp_cmd_seq 
*cmds,
                if (!ev)
                        return;
 
-               sctp_ulpq_tail_event(&asoc->ulpq, ev);
+               asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
 
                switch (err_hdr->cause) {
                case SCTP_ERROR_UNKNOWN_CHUNK:
@@ -1058,7 +1058,7 @@ static void sctp_cmd_assoc_change(struct sctp_cmd_seq 
*commands,
                                            asoc->c.sinit_max_instreams,
                                            NULL, GFP_ATOMIC);
        if (ev)
-               sctp_ulpq_tail_event(&asoc->ulpq, ev);
+               asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
 }
 
 /* Helper function to generate an adaptation indication event */
@@ -1070,7 +1070,7 @@ static void sctp_cmd_adaptation_ind(struct sctp_cmd_seq 
*commands,
        ev = sctp_ulpevent_make_adaptation_indication(asoc, GFP_ATOMIC);
 
        if (ev)
-               sctp_ulpq_tail_event(&asoc->ulpq, ev);
+               asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
 }
 
 
@@ -1493,7 +1493,8 @@ static int sctp_cmd_interpreter(enum sctp_event 
event_type,
                        pr_debug("%s: sm_sideff: event_up:%p, ulpq:%p\n",
                                 __func__, cmd->obj.ulpevent, &asoc->ulpq);
 
-                       sctp_ulpq_tail_event(&asoc->ulpq, cmd->obj.ulpevent);
+                       asoc->stream.si->enqueue_event(&asoc->ulpq,
+                                                      cmd->obj.ulpevent);
                        break;
 
                case SCTP_CMD_REPLY:
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 036f945..fe2cab9 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2294,7 +2294,7 @@ static int sctp_setsockopt_events(struct sock *sk, char 
__user *optval,
                        if (!event)
                                return -ENOMEM;
 
-                       sctp_ulpq_tail_event(&asoc->ulpq, event);
+                       asoc->stream.si->enqueue_event(&asoc->ulpq, event);
                }
        }
 
diff --git a/net/sctp/stream_interleave.c b/net/sctp/stream_interleave.c
index 8238311..e853972 100644
--- a/net/sctp/stream_interleave.c
+++ b/net/sctp/stream_interleave.c
@@ -552,6 +552,7 @@ static struct sctp_stream_interleave 
sctp_stream_interleave_0 = {
        .assign_number          = sctp_chunk_assign_ssn,
        .validate_data          = sctp_validate_data,
        .ulpevent_data          = sctp_ulpq_tail_data,
+       .enqueue_event          = sctp_ulpq_tail_event,
 };
 
 static struct sctp_stream_interleave sctp_stream_interleave_1 = {
@@ -561,6 +562,7 @@ static struct sctp_stream_interleave 
sctp_stream_interleave_1 = {
        .assign_number          = sctp_chunk_assign_mid,
        .validate_data          = sctp_validate_idata,
        .ulpevent_data          = sctp_ulpevent_idata,
+       .enqueue_event          = sctp_enqueue_event,
 };
 
 void sctp_stream_interleave_init(struct sctp_stream *stream)
-- 
2.1.0