There's no need to use 'void *' because we have forward declaration for
'struct gsm_network' in the very same header.
Change-Id: I5078ffcf2706adaca1b5df107f8b6a44062ca28c
When check-imei-req is enabled in the VTY config, do not accept IMEIs
sent by the ME directly anymore. Send the IMEI to the EIR/HLR and wait
for its ACK or NACK.
OsmoHLR also accepts all IMEIs at this point, but this allows to
optionally store the IMEI in the HLR DB.
Depends: Ib240474b0c3c603ba840cf26babb38a44dfc9364 (osmo-hlr)
Related: OS#3733
Change-Id: Ife868ed71c36cdd02638072abebf61fc949080a7
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
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
Make the vsub argument of both vlr_subscr_msisdn_or_name()
and vlr_subscr_name() a const.
The LOGVSUBP() macro uses vlr_subscr_name() and will not generate a
warning anymore when used with a const vsub.
Change-Id: If609269191f4df6186d823a2eee14012846328e2
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
If Assignment fails in the BSC, trigger an EV_TEARDOWN_ERROR in the mgcp_ctx
FSM instance, so that the call gets torn down immediately. Before this, the
non-call would idle around without anything happening.
Related: OS#3236
Depends: I11b182a03f5ecb6df7cd8f260757d3626c8e945d (libosmocore)
Change-Id: I358cfbaf0f44f25148e8b9bafcb9257b1952b35a
The flag is set to true when an assignment has been started, and it is only
relevant for a CC transaction. So fix naming and place in cc struct.
Cosmetic preparation for I1f8746e7babfcd3028a4d2c0ba260c608c686c76 and
I0ba216b737909e92080a722db26e3577726c63cb/
Change-Id: I8dacf46141ba0b664e85b0867ade330c97d8495f
Various places in the code check a flag whether assignment was started and
launch it. To fix incoming-call-during-ongoing-call, I will tweak that logic.
To be able to do that only in one place, remove code dup.
Cosmetic preparation for I1f8746e7babfcd3028a4d2c0ba260c608c686c76 and
I0ba216b737909e92080a722db26e3577726c63cb/
Depends: I11b182a03f5ecb6df7cd8f260757d3626c8e945d (libosmocore: LOGPFSMSL)
Change-Id: I11c0b7dc3f1a747028629b48e522bb3b864884ba
In rare cases, a conn is already associated with a subscriber. So far, we
abort()ed on that, bringing the entire osmo-msc down. Rather log an error and
keep the service running.
In vlr.ops.subscr_assoc, add success/failure return value, and abort the
LU/PARQ on error.
I haven't figured out in detail yet why/how a subscriber would re-launch a
LU/PARQ on a conn that is already associated, so far it is merely clear that we
do not want to crash the MSC if that happens. A log is in OS#3742.
Related: OS#3742, OS#3743
Change-Id: Ic0d54644bc735700220b1ef3a4384c217d57d20f
As a rudiment of OsmoNiTB, OsmoMSC is still involved in SMS
processing, storage (in SQLite DB), and routing (via SMPP).
In real networks this is done by the external entity called
SMSC (SMS Centre), while the MSC is doing re-encapsulation
of GSM 04.11 SM-TL (Transport Layer) payload (i.e. TPDU)
between SM-RL (Relay Layer) and MAP.
Since OsmoMSC itself is not a 'Network in The Box' anymore, it
makes sense to replicate the 'traditional' behaviour of MSC.
The problem is that this behaviour cannot co-exist with the
current implementation, so the key idea is to rip out the
local SMS storage and routing from OsmoMSC, and (re)implement
it in a separate process (OsmoSMSC?).
As a temporary solution, this change introduces a 'kill-switch'
VTY option that enables routing of SMS messages over GSUP
towards ESME (through VLR and HLR), but breaks the local
storage and routing. This is why it's disabled by default.
As soon as we move the SMS processing and storage away from
OsmoMSC, this behaviour would be enabled by default, and
the VTY option would be hidden and deprecated. At the moment,
this option basically does nothing, and will take an effect
in the follow-up changes.
Change-Id: Ie57685ed2ce1e4c978e775b68fdffe58de44882b
Related: OS#3587
We can check if we're parsing the config file by checking
whether vty->type equals VTY_FILE. This avoids the use of
an extra local variable to track the parsing state.
Change-Id: I85161575e025f7c389832427a434bd8e2d6ecc75
Fixes: 1051c42088
Related: OS#3355
Always use LAC which is part of Cell Global ID otherwise we might end up
in a situation where separately stored LAC differs.
Both are described in 3GPP TS 23.008 $2.4 as temporary subscriber data
to be stored in VLR. Both are defined in 3GPP TS 23.003. The LAC is part
of LAI which is part of CGI so there should be no case when those values
differ for a given subscriber.
Change-Id: I993ebc3e14f25e83124b6d3f8461a4b18f971f8e
The 'ipa-name' option can now only be set via the configuration file
because changing the IPA name at run-time conflicts with active
GSUP connections and routes configured in the HLR. The osmo-msc
program must be restarted if its IPA name needs to change.
Change-Id: I6cff91793e646e0396e8f1bc87d0f52709e5f12a
Related: OS#3355
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
Add a 'ipa-name' VTY command which overrides the default IPA name
used by the MSC. This is a prerequisite for inter-MSC handover.
Related: OS#3355
Change-Id: I317d6c59f77e92fbb2b875a83dc0ec2fa5cb6006
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
So far the only way to use external MNCC is to pass the -M cmdline arg:
osmo-msc -M /path/to/socket
However, the osmo-msc.service file for systemd is installed by 'make install',
and hence it is quite impractical to depend on such a config item to be
required in the service file:
- It defies any scheme an operator may have in place to compose the
osmo-msc.cfg file -- this option doesn't go in the .cfg file but needs
separate action to add to the installed service file.
- After a make install or package upgrades / re-installations, this option will
be plain overwritten silently, or lead to the need for resolving file
conflicts.
The initial spark for this came from configuring the 35c3 GSM from cfg
templates.
Change-Id: I2ec59d5eba407f83295528b51b93678d446b9cee
gsm_subscriber.h contains some legacy cruft, part of which is that the VLR's
max MSISDN length should rather be defined in vlr.h. Same for GSM_NAME_LENGTH
-> VLR_NAME_LENGTH.
Adjust some sms_queue stuff that anyway includes vlr.h already.
Drop gsm_subscriber.h from vlr.h.
Add other (more concise) includes that thus become necessary, since the include
chain vlr.h->gsm_subscriber.h->gsm_data.h is no longer in place.
Change-Id: Iab5c507ec04fc2884187cf946f6ae2240e4a31f8
Along goes GSM_KEYSEQ_INVAL as VLR_*.
It's where it logically belongs, and is almost the only reason why vlr.h
includes gsm_data.h. The remaining reason, GSM_EXTENSION_LENGTH, will be moved
by upcoming patch.
Change-Id: I122feae7ee3cbc59e941daef35a954bce29fec76
For hysterical raisins, there are some header files that contain few
declarations, and where the name doesn't reflect the content. Combine them to
new msc_common.h:
- common.h
- common_cs.h
- osmo_msc.h
Change-Id: I9e3a587342f8d398fb27354a2f2475f8797cdb28
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
Following previous rename of gsm_subscriber_connection:
Some functions and #defines are still called like "msc_conn" or just "msc_",
while they are clearly about a RAN conn.
To avoid confusion with the future separate concepts of MSC roles and a RAN
connection, rename all those to match the common "ran_conn" prefix.
Change-Id: Ia17a0a35f11911e00e19cafb5d7828d729a69640
In preparation for inter-BSC and inter-MSC handover, we need to separate the
subscriber management logic from the actual RAN connections. What better time
to finally rename gsm_subscriber_connection.
* Name choice:
In 2G, this is a connection to the BSS, but even though 3GPP TS commonly talk
of "BSS-A" and "BSS-B" when explaining handover, it's not good to call it
"bss_conn": in 3G a BSS is called RNS, IIUC.
The overall term for 2G (GERAN) and 3G (UTRAN) is RAN: Radio Access Network.
* Rationale:
A subscriber in the MSC so far has only one RAN connection, but e.g. for
inter-BSC handover, a second one needs to be created to handover to. Most of
the items in the former gsm_subscriber_connection are actually related to the
RAN, with only a few MM and RTP related items. So, as a first step, just rename
it to ran_conn, to cosmetically prepare for moving the not strictly RAN related
items away later.
Also:
- Rename some functions from msc_subscr_conn_* to ran_conn_*
- Rename "Subscr_Conn" FSM instance name to "RAN_conn"
- Rename SUBSCR_CONN_* to RAN_CONN_*
Change-Id: Ic595f7a558d3553c067f77dc67543ab59659707a
msc_compl_l3() always returns MSC_CONN_ACCEPT, because the conn FSM handles (or
should handle) all reject cases. The accept/reject return value is a legacy
from libbsc internally passing a conn over to libmsc, in osmo-nitb.
Drop enum msc_compl_l3_rc.
Change msc_compl_l3_rc() to return void.
Change all callers to always act like for acceptance, as they always did anyway.
Drop some local variables now no longer needed.
Adjust the comment to msc_compl_l3().
Drop a bunch of #if-0'd code from msc_compl_l3().
Change-Id: I759d15f4e820d5fc16397ed7210ce92308e52a09
On UTRAN, Security Mode is used instead of Ciphering Command, which does not
feature an A5 algorithm id.
Change-Id: Idc7ca9da1aa13ae16f5db2cb1024676cbc770820
gsm_network contains an int handover.active which is always zero. Drop it.
There is real handover code coming up soon, one part of this is to avoid
confusion.
The internal MNCC code queried it to decide whether to MNCC_BRIDGE or proxy RTP
(MNCC_FRAME_RECV). Since RTP is being handled by osmo-mgw since forever, drop
that entire condition from mncc_builtin.
Change-Id: Ie16e718266882588b38297121364ca0b7fdfe948
According to GSM TS 04.11, the SMC (Short Message Control) state
machine is a part of CM-sublayer of L3, that is responsible for
connection management (establisment and releasing), and SM-RP
(Relay Protocol) message delivery.
For some reason, the connection establisment request from SMC
(GSM411_MMSMS_EST_REQ) was not handled properly - it was
always assumed that connection is already established.
This is why the code initiating a MT (Mobile Terminated) SMS
transfer had to establish a radio connection with subscriber
manually.
Let's benefit from having the SMC state machine, and offload
connection establishment to it. This change makes the local
implementation closer to GSM TS 04.11, and facilitates the
further integration of GSUP transport.
NOTE: the expected unit test output is changed, because now we
always allocate a transaction first, and then establish a
connection, not vice versa.
Change-Id: I4a07ece80d8dd40b23da6bb1ffc9d3d745b54092
According to GSM TS 04.11, section 8.2.3, the RP Message Reference
is a mandatory field for all messages on the SM-RL (SM Relay Layer),
that is used to link an RP-ACK or RP-ERROR message to the associated
(preceding) RP-DATA or RP-SMMA message transfer attempt.
This change extends the transaction state structure with SM-RP-MR,
and introduces a new function for matching transactions within a
given connection by this reference.
Change-Id: Ice47c37ecef4416e65ecee8931d946c915316791
Count COMPLETE and REJECT messages. Besides general troubleshooting
that's also useful for TTCN-3 tests to check that OsmoMSC processed
those messages as expected.
Change-Id: I5822b2b38b64f1a691b26c926a8e2bece21dc624
Related: OS#3187
The external MNCC handler may hang indefinitely in cases where the remote
end of the MNCC ceases to work properly. Add a global guard timer to
make sure the call reaches ACTIVE state.
Change-Id: I7375d1e17cd746aac4eadfe1e587e82cf1630d3d
Related: OS#3599
This recent patch moves Classmark storage to the VLR subscriber, and introduced
a segfault when a Classmark Update is received during IMSI detach:
commit 986fe7ed18
change-id I27081bf6e9e017923b2d02607f7ea06beddad82a
Mon Sep 17 01:12:13 2018 +0200
"store classmark in vlr_subscr, not conn"
It assumed that we would never accept any Classmark Update messages unless we
also have a valid subscriber for it. Well, that is proven wrong by the
ttcn3-msc-test TC_imsi_detach_by_imsi(), which brings osmo-msc to its knees.
Fix: in case of no valid vlr_subscr being present, store Classmark in the conn
temporarily, and copy any received Classmark to VLR subscriber as soon as it
gets associated with the conn (if at all).
Change-Id: Ib2a2ae6bf86e8f29fc6751a8b5cdb7187cd70290
When the VLR requests a Ciphering Mode with vlr_ops.set_ciph_mode(), and if we
need a ciph algo flag from a Classmark information that is not yet known
(usually CM 2 during LU), send a BSSMAP Classmark Request to get it.
To manage the intermission of the Classmark Request, add
- msc_classmark_request_then_cipher_mode_cmd(),
- state SUBSCR_CONN_S_WAIT_CLASSMARK_UPDATE,
- event SUBSCR_CONN_E_CLASSMARK_UPDATE.
From state AUTH_CIPH, switch to state WAIT_CLASSMARK_UPDATE. Once the BSSMAP
Classmark Response, is received, switch back to SUBSCR_CONN_S_AUTH_CIPH and
re-initiate Ciphering Mode.
To be able to re-enter the Ciphering Mode algo decision, factor it out into
msc_geran_set_cipher_mode().
Rationale:
In the following commit, essentially we stopped supporting A5/3 ciphering:
commit 71330720b6
"MSC: Intersect configured A5 algorithms with MS-supported ones"
Change-Id: Id124923ee52a357cb7d3e04d33f585214774f3a3
A5/3 was no longer supported because from that commit on, we strictly checked
the MS-supported ciphers, but we did not have Classmark 2 available during
Location Updating.
This patch changes that: when Classmark 2 is missing, actively request it by a
BSSMAP Classmark Request; continue Ciphering only after the Response. Always
request missing Classmark, even if a lesser cipher were configured available.
If the Classmark Update response fails to come in, cause an attach failure.
Instead, we could attempt to use a lesser cipher that is also enabled. That is
left as a future feature, should that become relevant. I think it's unlikely.
Technically, we could now end up requesting a Classmark Updating both during LU
(vlr_lu_fsm) and CM Service/Paging Response (proc_arq_fsm), but in practice the
only time we lack a Classmark is: during Location Updating with A5/3 enabled.
A5/1 support is indicated in CM1 which is always available, and A5/3 support is
indicated in CM2, which is always available during CM Service Request as well
as Paging Response. So this patch has practical relevance only for Location
Updating. For networks that permit only A5/3, this patch fixes Location
Updating. For networks that support A5/3 and A5/1, so far we always used A5/1
during LU, and after this patch we request CM2 and likely use A5/3 instead.
In msc_vlr_test_gsm_ciph, verify that requesting Classmark 2 for A5/3 works
during LU. Also verify that the lack of a Classmark Response results in attach
failure.
In msc_vlr_test_gsm_ciph, a hacky unit test fakes a situation where a CM2 is
missing during proc_arq_fsm and proves that that code path works, even though
the practical relevance is currently zero. It would only become interesting if
ciphering algorithms A5/4 and higher became relevant, because support of those
would be indicated in Classmark 3, which would always require a Classmark
Request.
Related: OS#3043
Depends: I4a2e1d3923e33912579c4180aa1ff8e8f5abb7e7 (libosmocore)
Change-Id: I73c7cb6a86624695bd9c0f59abb72e2fdc655131
Store all Classmark information in the VLR.
So, we now always know the Classmark 1 (mandatory IE for LU). This is visible
in the msc_vlr_tests -- they no longer indicate "assuming A5/1 is supported"
because classmark 1 is missing, because we now know the Classmark 1.
Rationale:
During Location Updating, we receive Classmark 1; during CM Service Request and
Paging Response, we receive Classmark 2. So far we stored these only for the
duration of the conn, so as soon as a LU is complete, we would forget CM1.
In other words, for anything else than a LU Request, we had no Classmark 1
available at all.
During Ciphering Mode Command, we rely on Classmark 1 to determine whether A5/1
is supported. That is moot if we don't even have a Classmark 1 for any CM
Service Request or Paging Response initiated connections.
The only reason that A5/1 worked is that we assume A5/1 to work if Classmark 1
is missing. To add to the confusion, if a phone indicated that it did *not*
support A5/1 in the Classmark 1, according to spec we're supposed to not
service it at all. A code comment however says that we instead want to heed the
flag -- which so far was only present in a Location Updating initiated
connection. Now we can make this decision without assuming things.
This got my attention while hacking on sending a BSSMAP Classmark Request from
the MSC if it finds missing Classmark information, and was surprised to see it
it lacking CM1 to decide about A5/1.
Change-Id: I27081bf6e9e017923b2d02607f7ea06beddad82a
The intention was to use the file's basename, but __BASE_FILE__ means "the root
file that is being parsed and contains #include statements".
If we had a function using __BASE_FILE__ and that was defined in an #included
file, __BASE_FILE__ would indicate the first file where the #include is, and
not the file where the function is defined. __BASE_FILE__ works for us because
we don't ever include function definitions that log something, so __BASE_FILE__
always coincides with __FILE__ for our logging; but still __BASE_FILE__ is
semantically the wrong constant.
Related: OS#2740
Change-Id: I1c8122c909938daaf782468c1c5b0262d555c3ce
When the assignment completes a choosen codec is returned. At the
moment we do not use this information.
- add struct members for codec info (both, RAN and CN)
- parse codec info in BSSMAP ASSIGNMENT COMPLETE
- use codec info on mgcp
Since the MNCC API is not complete yet, we currently only use the
codec info only on the internal MNCC yet.
Change-Id: I9d5b1cd016d9a058b22a367d0e5e9f2ef447931a
Related: OS#2728
Max
Oliver Smith
Philipp Maier