sctp: Bundle HEAERTBEAT into ASCONF_ACK

With this patch a HEARTBEAT chunk is bundled into the ASCONF-ACK
for ADD IP ADDRESS, confirming the new destination as quickly as
possible.

Signed-off-by: Michio Honda <micchie@sfc.wide.ad.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 49b847b00f99..73d14fc02606 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -3612,6 +3612,11 @@ sctp_disposition_t sctp_sf_do_asconf(const struct sctp_endpoint *ep,
          */
         asconf_ack->dest = chunk->source;
         sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(asconf_ack));
+        if (asoc->new_transport) {
+                sctp_sf_heartbeat(ep, asoc, type, asoc->new_transport,
+                    commands);
+                ((struct sctp_association *)asoc)->new_transport = NULL;
+        }
 
         return SCTP_DISPOSITION_CONSUME;
 }