map_sccp: on timeout during WAIT_CC, send N-DISCONNECT to SCCP-SCOC

When waiting for CC expires, we should tell the SCCP-SCOC that we've
stopped waiting: send N-DISCONNECT, instead of nothing.

Change-Id: Ie94fcee4e2507a55449050aab96307199aed99a2
---
M src/osmo-hnbgw/context_map_sccp.c
1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/osmo-hnbgw/context_map_sccp.c b/src/osmo-hnbgw/context_map_sccp.c
index deb6e0f..cea0817 100644
--- a/src/osmo-hnbgw/context_map_sccp.c
+++ b/src/osmo-hnbgw/context_map_sccp.c
@@ -442,11 +442,13 @@
 	/* Return 1 to terminate FSM instance, 0 to keep running */
 	switch (fi->state) {
 	case MAP_SCCP_ST_INIT:
-	case MAP_SCCP_ST_WAIT_CC:
-		/* cannot sent SCCP RLSD, because the other side hasn't responded with the remote reference. */
+		/* cannot sent SCCP RLSD, because we haven't set up an SCCP link */
 		map_sccp_fsm_state_chg(MAP_SCCP_ST_DISCONNECTED);
 		return 0;
 
+	case MAP_SCCP_ST_WAIT_CC:
+		/* send N-DISCONNECT. libosmo-sigtran/sccp_scoc.c will do the SCCP connection cleanup, like waiting a
+		 * bit whether the SCCP CC might still arrive, and cleanup the conn if not. */
 	case MAP_SCCP_ST_CONNECTED:
 	case MAP_SCCP_ST_WAIT_RLSD:
 		/* send SCCP RLSD. libosmo-sigtran/sccp_scoc.c will do the SCCP connection cleanup.

