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-rw-r--r--net/sctp/outqueue.c92
1 files changed, 56 insertions, 36 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index bda50596d4bf..92f14f51edf2 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -875,45 +875,21 @@ static bool sctp_outq_select_transport(struct sctp_chunk *chunk,
return changed;
}
-/*
- * Try to flush an outqueue.
- *
- * Description: Send everything in q which we legally can, subject to
- * congestion limitations.
- * * Note: This function can be called from multiple contexts so appropriate
- * locking concerns must be made. Today we use the sock lock to protect
- * this function.
- */
-static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
+static void sctp_outq_flush_ctrl(struct sctp_outq *q,
+ struct sctp_transport **_transport,
+ struct list_head *transport_list,
+ gfp_t gfp)
{
- struct sctp_packet *packet;
+ struct sctp_transport *transport = *_transport;
struct sctp_association *asoc = q->asoc;
- __u32 vtag = asoc->peer.i.init_tag;
- struct sctp_transport *transport = NULL;
+ struct sctp_packet *packet = NULL;
struct sctp_chunk *chunk, *tmp;
enum sctp_xmit status;
- int error = 0;
- int start_timer = 0;
- int one_packet = 0;
-
- /* These transports have chunks to send. */
- struct list_head transport_list;
- struct list_head *ltransport;
-
- INIT_LIST_HEAD(&transport_list);
- packet = NULL;
-
- /*
- * 6.10 Bundling
- * ...
- * When bundling control chunks with DATA chunks, an
- * endpoint MUST place control chunks first in the outbound
- * SCTP packet. The transmitter MUST transmit DATA chunks
- * within a SCTP packet in increasing order of TSN.
- * ...
- */
+ int one_packet, error;
list_for_each_entry_safe(chunk, tmp, &q->control_chunk_list, list) {
+ one_packet = 0;
+
/* RFC 5061, 5.3
* F1) This means that until such time as the ASCONF
* containing the add is acknowledged, the sender MUST
@@ -929,9 +905,11 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
/* Pick the right transport to use. Should always be true for
* the first chunk as we don't have a transport by then.
*/
- if (sctp_outq_select_transport(chunk, asoc, &transport,
- &transport_list))
+ if (sctp_outq_select_transport(chunk, asoc, _transport,
+ transport_list)) {
+ transport = *_transport;
packet = &transport->packet;
+ }
switch (chunk->chunk_hdr->type) {
/*
@@ -954,6 +932,7 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
if (sctp_test_T_bit(chunk))
packet->vtag = asoc->c.my_vtag;
/* fallthru */
+
/* The following chunks are "response" chunks, i.e.
* they are generated in response to something we
* received. If we are sending these, then we can
@@ -979,7 +958,7 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
case SCTP_CID_RECONF:
status = sctp_packet_transmit_chunk(packet, chunk,
one_packet, gfp);
- if (status != SCTP_XMIT_OK) {
+ if (status != SCTP_XMIT_OK) {
/* put the chunk back */
list_add(&chunk->list, &q->control_chunk_list);
break;
@@ -1006,6 +985,47 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
BUG();
}
}
+}
+
+/*
+ * Try to flush an outqueue.
+ *
+ * Description: Send everything in q which we legally can, subject to
+ * congestion limitations.
+ * * Note: This function can be called from multiple contexts so appropriate
+ * locking concerns must be made. Today we use the sock lock to protect
+ * this function.
+ */
+static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
+{
+ struct sctp_packet *packet;
+ struct sctp_association *asoc = q->asoc;
+ __u32 vtag = asoc->peer.i.init_tag;
+ struct sctp_transport *transport = NULL;
+ struct sctp_chunk *chunk;
+ enum sctp_xmit status;
+ int error = 0;
+ int start_timer = 0;
+
+ /* These transports have chunks to send. */
+ struct list_head transport_list;
+ struct list_head *ltransport;
+
+ INIT_LIST_HEAD(&transport_list);
+ packet = NULL;
+
+ /*
+ * 6.10 Bundling
+ * ...
+ * When bundling control chunks with DATA chunks, an
+ * endpoint MUST place control chunks first in the outbound
+ * SCTP packet. The transmitter MUST transmit DATA chunks
+ * within a SCTP packet in increasing order of TSN.
+ * ...
+ */
+
+ sctp_outq_flush_ctrl(q, &transport, &transport_list, gfp);
+ packet = &transport->packet;
if (q->asoc->src_out_of_asoc_ok)
goto sctp_flush_out;