LOG_TRANS: store subsys in trans, unify USSD logging back to DMM

Instead of calling trans_log_subsys() for each LOG_TRANS() log line, rather
store in trans->log_subsys once on trans_alloc() and use that.

Do not fall back to the RAN's own subsystem (DBSSAP / DIUCS), it makes little
sense and may cause logging to switch subsystems depending on the RAN state.

In trans_log_subsys(), add missing switch cases:

- Log silent call transactions also on CC.
- Log USSD on DMM.

About USSD: we currently have no dedicated USSD logging category. As a result,
after LOG_TRANS() was introduced [1], USSD logged on DBSSAP/DIUCS or DMSC,
depending on whether a RAN was associated with the trans or not. Before that
change, USSD always logged on DMM, so, until we have a separate logging
category for USSD, consistenly use DMM again.

[1] in I2e60964d7a3c06d051debd1c707051a0eb3101ba / ff7074a0c7b62025473d8f1a950905ac2cb2f31c

Related: coverity CID 198453
Change-Id: I6dfe5b98fb9e884c2dde61d603832dafceb12123

1 files changed, 8 insertions, 8 deletions

diff --git a/tests/msc_vlr/msc_vlr_test_ss.err b/tests/msc_vlr/msc_vlr_test_ss.err
index 5592488a5..2030715f9 100644
--- a/tests/msc_vlr/msc_vlr_test_ss.err
+++ b/tests/msc_vlr/msc_vlr_test_ss.err
@@ -173,12 +173,12 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AU
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: Dispatching 04.08 message: NCSS GSM0480_MTYPE_REGISTER
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + NCSS: now used by 3 (attached,active-conn,NCSS)
-DMSC trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000001 tid-8) New transaction
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000001 tid-8) New transaction
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: + nc_ss: now used by 3 (cm_service_ss,rx_from_ms,nc_ss)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: Received Event MSC_A_EV_TRANSACTION_ACCEPTED
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: state_chg to MSC_A_ST_COMMUNICATING
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: - cm_service_ss: now used by 2 (rx_from_ms,nc_ss)
-DBSSAP trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ callref-0x20000001 tid-8) Received SS/USSD msg GSM0480_MTYPE_REGISTER
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ callref-0x20000001 tid-8) Received SS/USSD msg GSM0480_MTYPE_REGISTER
 GSUP --> HLR: OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200000013101013515a11302010102013b300b04010f0406aa510c061b010a0103
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: - rx_from_ms: now used by 1 (nc_ss)
 <-- GSUP rx OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200000013101033527a225020101302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d0a0103
@@ -187,7 +187,7 @@ DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_CO
 - DTAP --GERAN-A--> MS: GSM0480_MTYPE_RELEASE_COMPLETE: 8b2a1c27a225020101302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
-DBSSAP trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ callref-0x20000001 tid-8) Freeing transaction
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ callref-0x20000001 tid-8) Freeing transaction
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - NCSS: now used by 3 (attached,active-conn,gsm0911_gsup_rx)
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: - nc_ss: now used by 0 (-)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: Received Event MSC_A_EV_UNUSED
@@ -366,9 +366,9 @@ DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + _test_ss_ussd_no: now used b
 <-- GSUP rx OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200001013101013515a11302010102013b300b04010f0406aa510c061b010a0103
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm0911_gsup_rx: now used by 3 (attached,_test_ss_ussd_no,gsm0911_gsup_rx)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + NCSS: now used by 4 (attached,_test_ss_ussd_no,gsm0911_gsup_rx,NCSS)
-DMSC trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-255) New transaction
-DMSC trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-255) Establishing network-originated session
-DMSC trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-0) Triggering Paging Request
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-255) New transaction
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-255) Establishing network-originated session
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071 callref-0x20000101 tid-0) Triggering Paging Request
 DPAG Paging: IMSI-901700000004620:MSISDN-46071 for GSM 09.11 SS/USSD: Starting paging
   paging request (SIGNALLING_HIGH_PRIO) to IMSI-901700000004620:MSISDN-46071 on GERAN-A
   strcmp(paging_expecting_imsi, vsub->imsi) == 0
@@ -433,7 +433,7 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHE
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: + rx_from_ms: now used by 2 (nc_ss,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: Dispatching 04.08 message: NCSS GSM0480_MTYPE_FACILITY
-DBSSAP trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP callref-0x20000101 tid-0) Received SS/USSD msg GSM0480_MTYPE_FACILITY
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP callref-0x20000101 tid-0) Received SS/USSD msg GSM0480_MTYPE_FACILITY
 GSUP --> HLR: OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200001013101023527a225020101302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d0a0103
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: - rx_from_ms: now used by 1 (nc_ss)
   dtap_tx_confirmed == 1
@@ -444,7 +444,7 @@ DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHE
 - DTAP --GERAN-A--> MS: GSM0480_MTYPE_RELEASE_COMPLETE: 0b2a
 - DTAP matches expected message
 DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
-DBSSAP trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP callref-0x20000101 tid-0) Freeing transaction
+DMM trans(NCSS IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP callref-0x20000101 tid-0) Freeing transaction
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - NCSS: now used by 4 (attached,2*gsm0911_gsup_rx,active-conn)
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: - nc_ss: now used by 0 (-)
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: Received Event MSC_A_EV_UNUSED