ms: Make ms_{attach,detach}_tbf expectancies more robust
* Make sure that the tbf being attached has already the MS assigned.
* Check no re-attaching of alredy attached TBF ever happens.
* Document and early skip case where a non-attached TBF detach is
attempted.
* Avoid recursive call mess to tbf_set_ms(tbf, NULL); during detach.
* MsTest needs to be modified since it uses fake TBF objects which use
different set of calls than the regular TBFs in osmo-pcu. Since the
ul_tbf object is reused, it needs to be assigned ul_tbf->ms again before
re-assigning it, as per what happens usually in tbf_set_ms() in
osmo-pcu.
Change-Id: Ia18fe2de1fb3bf72f530157e5f30de64f2b11e12
diff --git a/tests/ms/MsTest.err b/tests/ms/MsTest.err
index 3d271ae..3f2f520 100644
--- a/tests/ms/MsTest.err
+++ b/tests/ms/MsTest.err
@@ -63,10 +63,10 @@
MS(IMSI-001001987654321:TLLI-0xffeeddbb:TA-220:MSCLS-0-0:UL): - ms_attach_ul_tbf: now used by 0 (-)
MS(IMSI-001001987654321:TLLI-0xffeeddbb:TA-220:MSCLS-0-0) Detaching TBF: TBF(UL:STATE-NEW:GPRS:IMSI-001001987654321:TLLI-0xffeeddbb)
MS(IMSI-001001987654321:TLLI-0xffeeddbb:TA-220:MSCLS-0-0) Destroying MS object
-MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0) Attaching UL TBF: TBF(UL:STATE-NEW:GPRS)
+MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0) Attaching UL TBF: TBF(UL:STATE-NEW:GPRS:IMSI-001001987654322:TLLI-0xffeeddbc)
MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0): + ms_attach_ul_tbf: now used by 1 (ms_attach_ul_tbf)
MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0:UL): - ms_attach_ul_tbf: now used by 0 (-)
-MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0) Detaching TBF: TBF(UL:STATE-NEW:GPRS)
+MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0) Detaching TBF: TBF(UL:STATE-NEW:GPRS:IMSI-001001987654322:TLLI-0xffeeddbc)
MS(IMSI-001001987654322:TLLI-0xffeeddbc:TA-220:MSCLS-0-0) Destroying MS object
Creating MS object
Modifying MS object, UL TLLI: 0xffffffff -> 0xffeeddbb, not yet confirmed