cosmetic: rename conn_fsm "bump" event to "release_when_unused"

The naming of "bump" was short and made sense to me at the time of writing, but
it is keeping pretty much everyone else at a distance, no-one intuitively gets
what it is supposed to mean.

Clarify by renaming to "release_when_unused".

Adjust test expectations.

Change-Id: I4dcc55f536f63b13a3da29fff1df5fe16751f83a
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_authen.err b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
index c2efa9e..c996f3f 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
@@ -27,7 +27,7 @@
 DVLR GSUP tx: 08010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000004026f0
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
@@ -89,7 +89,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -141,8 +141,8 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -191,7 +191,7 @@
 - ...rand=12aca96fb4ffdea5c985cbafa9b6e18b
 - ...expecting sres=20bde240
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x4)
   cm_service_result_sent == 0
   auth_request_sent == 1
@@ -236,10 +236,10 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_CM_SERVICE_REQ
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: received_cm_service_request = true
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
 DREF MSISDN:46071: MSC conn use - dtap == 1 (0x4)
   cm_service_result_sent == 1
 - a USSD request is serviced
@@ -256,8 +256,8 @@
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: NCSS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -319,7 +319,7 @@
 - ...rand=e7c03ba7cf0e2fde82b2dc4d63077d42
 - ...expecting sres=a29514ae
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x4)
   auth_request_sent == 1
 - needs auth, not yet accepted
@@ -370,10 +370,10 @@
 - DTAP --RAN_GERAN_A--> MS: SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:46071: MSC conn use - dtap == 2 (0x14)
   dtap_tx_confirmed == 1
   paging_stopped == 1
@@ -389,8 +389,8 @@
 DRLL Dispatching 04.08 message SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:46071: MSC conn use - dtap == 2 (0x14)
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
@@ -404,8 +404,8 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 DREF MSISDN:46071: MSC conn use - trans_sms == 2 (0x6)
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -476,7 +476,7 @@
 DVLR GSUP tx: 08010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000004026f0
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
@@ -538,7 +538,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -621,8 +621,8 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -676,7 +676,7 @@
 - ...rand=12aca96fb4ffdea5c985cbafa9b6e18b
 - ...expecting sres=20bde240
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x4)
   cm_service_result_sent == 0
   auth_request_sent == 1
@@ -721,10 +721,10 @@
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_CM_SERVICE_REQ
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: received_cm_service_request = true
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
 DREF MSISDN:46071: MSC conn use - dtap == 1 (0x4)
   cm_service_result_sent == 1
 - a USSD request is serviced
@@ -741,8 +741,8 @@
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: NCSS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -804,7 +804,7 @@
 - ...rand=e7c03ba7cf0e2fde82b2dc4d63077d42
 - ...expecting sres=a29514ae
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x4)
   auth_request_sent == 1
 - needs auth, not yet accepted
@@ -855,10 +855,10 @@
 - DTAP --RAN_GERAN_A--> MS: SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:46071: MSC conn use - dtap == 2 (0x14)
   dtap_tx_confirmed == 1
   paging_stopped == 1
@@ -874,8 +874,8 @@
 DRLL Dispatching 04.08 message SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:46071: MSC conn use - dtap == 2 (0x14)
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
@@ -889,8 +889,8 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 DREF MSISDN:46071: MSC conn use - trans_sms == 2 (0x6)
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -939,7 +939,7 @@
 - sending GSM Auth Request for MSISDN:46071: tuple use_count=1 key_seq=3 auth_types=0x1 and...
 - ...rand=fa8f20b781b5881329d4fea26b1a3c51
 - ...expecting sres=5afc8d72
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x4)
   auth_request_sent == 1
   lu_result_sent == 0
@@ -968,7 +968,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(50462976){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -1050,8 +1050,8 @@
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(50462976){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1129,7 +1129,7 @@
 DVLR GSUP tx: 08010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000004026f0
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
@@ -1191,7 +1191,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -1272,8 +1272,8 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1349,7 +1349,7 @@
 DVLR GSUP tx: 08010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000004026f0
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
@@ -1411,7 +1411,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -1483,7 +1483,7 @@
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: lu_compl_vlr_new_tmsi()
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for MSISDN:46071, with TMSI 0x03020100
-DMM MSISDN:46071: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:46071: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:46071: MSC conn use - dtap == 1 (0x4)
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
   llist_count(&net->subscr_conns) == 1
@@ -1523,8 +1523,8 @@
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1600,7 +1600,7 @@
 DVLR GSUP tx: 08010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000000156f0
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000010650: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000010650: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000010650: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
@@ -1643,7 +1643,7 @@
 DVLR GSUP tx: 04010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000000156f0
 DVLR upd_hlr_vlr_fsm(901700000010650){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DMM IMSI:901700000010650: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000010650: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000010650: MSC conn use - dtap == 1 (0x4)
   lu_result_sent == 0
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
@@ -1695,8 +1695,8 @@
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_LU
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: releasing conn
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR vlr_lu_fsm(901700000010650){VLR_ULA_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1745,7 +1745,7 @@
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...expecting sres=85aa3130
 DREF VLR subscr MSISDN:42342 usage decreases to: 2
-DMM MSISDN:42342: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:42342: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:42342: MSC conn use - compl_l3 == 1 (0x4)
   cm_service_result_sent == 0
   auth_request_sent == 1
@@ -1790,10 +1790,10 @@
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_NEW}: SUBSCR_CONN_FROM_CM_SERVICE_REQ
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: received_cm_service_request = true
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: still awaiting first request after a CM Service Request
 DREF MSISDN:42342: MSC conn use - dtap == 1 (0x4)
   cm_service_result_sent == 1
 - a USSD request is serviced
@@ -1810,8 +1810,8 @@
 DMSC msc_tx 43 bytes to MSISDN:42342 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: NCSS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
 - DTAP matches expected message
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(901700000010650){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1873,7 +1873,7 @@
 - ...rand=efa9c29a9742148d5c9070348716e1bb
 - ...expecting sres=69d5f9fb
 DREF VLR subscr MSISDN:42342 usage decreases to: 4
-DMM MSISDN:42342: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM MSISDN:42342: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF MSISDN:42342: MSC conn use - compl_l3 == 1 (0x4)
   auth_request_sent == 1
 - needs auth, not yet accepted
@@ -1924,10 +1924,10 @@
 - DTAP --RAN_GERAN_A--> MS: SMS:0x01: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 4
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:42342: MSC conn use - dtap == 2 (0x14)
   dtap_tx_confirmed == 1
   paging_stopped == 1
@@ -1943,8 +1943,8 @@
 DRLL Dispatching 04.08 message SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still has active transaction: SMS
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: connection still has active transaction: SMS
 DREF MSISDN:42342: MSC conn use - dtap == 2 (0x14)
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
@@ -1958,8 +1958,8 @@
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 DREF VLR subscr MSISDN:42342 usage decreases to: 2
 DREF MSISDN:42342: MSC conn use - trans_sms == 2 (0x6)
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
-DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_RELEASE_WHEN_UNUSED
+DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: subscr_conn_fsm_release_when_unused: releasing conn
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
 DVLR Process_Access_Request_VLR(901700000010650){PR_ARQ_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -2031,7 +2031,7 @@
 DVLR GSUP tx: 08010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000004026f0
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
+DMM IMSI:901700000004620: subscr_conn_release_when_unused: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - compl_l3 == 1 (0x4)
   lu_result_sent == 0
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS