Commit Graph

6 Commits

Author SHA1 Message Date
Neels Hofmeyr 361e571815 refactor log ctx for vlr_subscr and ran_conn
ran_conn_get_conn_id(): instead of a talloc allocated string, return a static
buffer in ran_conn_get_conn_id(). So far this function had no callers.

Refactor ran_conn_update_id() API: during early L3-Complete, when no subscriber
is associated yet, update the FSM Id by the MI type seen in the L3 Complete
message: ran_conn_update_id_from_mi(). Later on set the vsub and re-update.

Call vlr.ops->subscr_update when the TMSI is updated, so that log context
includes the TMSI from then on.

Enrich context for vlr_subscr_name and ran_conn fi name.

Include all available information in vlr_subscr_name(); instead of either IMSI
or MSISDN or TMSI, print all of them when present. Instead of a short log,
rather have more valuable context.

A context info would now look like:

  Process_Access_Request_VLR(IMSI-901700000014706:MSISDN-2023:TMSI-0x08BDE4EC:GERAN-A-3:PAGING_RESP)

It does get quite long, but ensures easy correlation of any BSSAP / IuCS
messages with log output, especially if multiple subscribers are busy at the
same time.

Print TMSI and TMSInew in uppercase hexadecimal, which is the typical
representation in the telecom world.

When showing the RAN conn id
  GERAN_A-00000017
becomes
  GERAN-A-23
- We usually write the conn_id in decimal.
- Leading zeros are clutter and might suggest hexadecimal format.
- 'GERAN-A' and 'UTRAN-Iu' are the strings defined by osmo_rat_type_name().

Depends: I7798c3ef983c2e333b2b9cbffef6f366f370bd81 (libosmocore)
Depends: Ica25919758ef6cba8348da199b0ae7e0ba628798 (libosmocore)
Change-Id: I66a68ce2eb8957a35855a3743d91a86299900834
2019-01-12 09:51:22 +00:00
Neels Hofmeyr 46c06e28c1 add LOG_RAN_CONN() to use the conn->fi->id for context
For each conn, set a default logging category, to distinguish categories for
BSSMAP and RANAP based conns.

LOG_RAN_CONN(): log with the conn's default category,

LOG_RAN_CONN_CAT(): log with a manually set category (mostly for keeping
previous DMM logging on the same category).

In some places, replace LOGP() using manual context with LOG_RAN_CONN(), and
remove the manual context info, now provided by the conn->fi->id.

This is loosely related to inter-BSC and inter-MSC handover: to speed up
refactoring, I want to avoid the need for manual logging context and just use
this LOG_RAN_CONN().

Change-Id: I0a7809840428b1e028df6eb683bc5ffcc8df474a
2019-01-12 09:51:22 +00:00
Neels Hofmeyr 7814a83298 use osmo_rat_type from libosmocore
Replace locally defined enum ran_type with libosmocore's new enum
osmo_rat_type, and value_string ran_type_names with osmo_rat_type_names.

The string representations change, which has cosmetic effects on the test suite
expectations.

Depends: I659687aef7a4d67ca372a39fef31dee07aed7631 (libosmocore)
Change-Id: I2c78c265dc99df581e1b00e563d6912c7ffdb36b
2019-01-04 17:26:14 +00:00
Neels Hofmeyr 85cb2538f4 Revert "move ASS-COMPL MGCP handling out of a_iface_bssap.c"
Two reasons:

- the caller of msc_mgcp_ass_complete() from Iu, iucs_rx_rab_assign(), failed
  to be adjusted, breaking IuCS, as an --enable-iu --enable-werror build shows.
  Unfortunately our gerrit verification doesn't --enable-werror for osmo-msc.

- the condition of requiring ST_MDCX_RAN is faulty, breaking GSM CS.

This reverts commit 212c0c9bda.

Change-Id: I8348675c2f7c8856ea1682d05ee54160d4cfeb96
2018-12-11 19:52:30 +01:00
Neels Hofmeyr 212c0c9bda move ASS-COMPL MGCP handling out of a_iface_bssap.c
BSSMAP Assignment Complete: sort MGCP handling upon Assignment Complete to the
proper locations. a_iface_bssap.c is not the right place to invoke the MGCP
related procedures.

- in a_iface_bssap.c only decode the IEs.
- call ran_conn_assign_compl() and pass decoded values.
- drop msc_assign_compl(), it was dead code; instead:
- add ran_conn_assign_compl()
- pass on all MGCP related info to msc_mgcp_ass_complete()
- move all MGCP ctx related handling from a_iface_bssap.c to msc_mgcp.c.

I'm dropping some comments to save some time, because if I adjust them IMHO
they would still anyway restate the obvious.

ran_conn_assign_compl() is now quite a thin shim, but it makes sense to have
it:

- This is the place that should tear down the ran_conn in case assignment
  failed, left for a future patch.

- In the light of upcoming inter-MSC handover, ran_conn_assign_compl() will be
  the place where the Assignment Complete message might be relayed to a remote
  MSC.

Change-Id: I8137215c443239bddf3e69b5715839a365b73b6c
2018-12-10 14:20:59 +01:00
Neels Hofmeyr a8945ce37c move ran_conn declarations to new ran_conn.h
With the dawn of inter-BSC,MSC handover, adopting the MSC-A,-I,-T roles from
3GPP TS 49.008, the RAN connection shall soon be a neatly separated corner of
osmo-msc, so gravitate ran_conn decarations to files of matching name.

Also, the current chaos of API defined in files with mismatching/meaningless
names drives me crazy.

Change-Id: Ice31e6c43e46678538c65261f150c67e1d0845e5
2018-11-30 22:46:15 +01:00