| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
Change-Id: I4901ea309cd5975117480642d068df3ca2f73662
|
|
They were only included in osmo-stp so far.
Change-Id: I37e36e7919d6996a79533b62564c5d82908b57f7
|
|
In order to send the MSC's RTP endpoint IP address+port in the initial
SDP, move the MGCP CRCX up to an earlier point in the sequence of
establishing a voice call.
Update the voice call sequence chart to show the effects.
Though the semantic change is rather simple, the patch is rather huge --
things have to happen in a different order, and async waits have to
happen at different times.
The new codec filter helps to carry codec resolution information across
the newly arranged code paths.
Related: SYS#5066
Change-Id: Ie433db1ba0c46d4b97538a969233c155cefac21c
|
|
Same as voice_call_external_mncc.msc, but run with internal MNCC. Shows
some curious differences like the MNCC_LCHAN_MODIFY that internal MNCC
sends, but external doesn't.
Change-Id: Ic003322dc4e3fce24a8413688cfe18198a4dc08a
|
|
Re-run the msc_log_to_ladder.py on an actual 2G-2G voice call log, to
see if anything changed in the meantime, to prepare for upcoming changes
to the sequencing of establishing voice calls.
Also shows recent improvements on picking up RTP ports from MGCP and
MNCC.
Change-Id: I9dcf980ad24d5921c291c9aada211b37f6f3db7f
|
|
Because I will soon add an _internal_mncc one as well.
Change-Id: Ic90a93d749ea936a632a45e615007a58104eeedd
|
|
(multiple changes in one patch because who cares about this script)
tweak regexes -- they worked ok, but some of the '[^:]' should really be
'[^:)]', and they also look happier that way.
don't skip RAN=NONE, so we also see messages before Complete Layer 3.
s/sip/mncc, to generally be valid for both internal and external MNCC.
pick up RTP port information from MGCP OK
pick up RTP port information from MNCC rx and tx
add --verbose flag, to be able to check whether the regex rules are
still working (getting any hits).
fix rule_imsi_detach: should return True to be counted in --verbose.
tweak comment 'Generated by...' to include the full git path.
Change-Id: If619182ba76c6b238a1fa105a3c3449d7f473dd1
|
|
Both EXTRA_DIST and CLEANFILES had missing entries. It is easy to
forget to keep them up to date. Rather use wildcards to always pick up
all relevant files.
(Not adding *.dot because there are no .dot charts here, yet.)
Change-Id: I3a18e4608a310169d7c9cd9c1b8ac9015a990920
|
|
This way we document the recently gained support for MGW pooling.
Related: SYS#5987
Depends: osmo-gsm-manuals.git Change-Id Ieda0d4bfe6fc90da6e19c791d8ec2da89427ba3b
Change-Id: I9d8116a74a63591599c4cbafa60f9a313e6ab19c
|
|
New VTY commands have been added recently to the "mgw" node which drop
the redundant "mgw" prefix on each fo them.
Change-Id: I8ac11388e9493416b644812638e1374251725584
Depends: osmo-mgw.git Change-Id: Id55af13d2ecde49d968b9dca6a2f8108a17ec484
Related: SYS#5987
|
|
Large RAN installations may benefit from distributing the RTP voice
stream load over multiple media gateways.
libosmo-mgcp-client supports MGW pooling since version 1.8.0 (more than
one year ago). OsmoBSC has already been making use of it since then (see
osmo-bsc.git 8d22e6870637ed6d392a8a77aeaebc51b23a8a50); lets use this
feature in osmo-msc too.
This commit is also part of a series of patches cleaning up
libosmo-mgcp-client and slowly getting rid of the old non-mgw-pooled VTY
configuration, in order to keep only 1 way to configure
libosmo-mgcp-client through VTY.
Related: SYS#5091
Related: SYS#5987
Change-Id: I7670ba56fe989706579224a364595fdd4b4708ff
|
|
Change-Id: I47fe7e64126710db34c49f48ea9e8f8d46662e4b
|
|
Change-Id: I34387f561446aa5bf5db5264f0aca6bf6469d0e5
|
|
Change-Id: I0a7bc537ed84c5f3e203d106893b1cf1ee8b599a
|
|
The manual seems to lack a section about how the MGW is set up. In the
osmo-bsc manual we have a "Configure MGCP to connect to an MGW" section
under the "Configure primary links" section. We should have the same
thing in the osmo-msc manual as well.
Change-Id: I5501739e63860c436ff606bc2758b495258cd2b9
Depends: osmo-mgw I47e7ff858d5067b46d52329be5f362ff61c0dff8
|
|
Change-Id: I6ebc3a0555ef82e1c027ca75b45f8147a3e07ee6
|
|
Change-Id: I40cf8a86961c1e350b5cd74d6e2cf64a22b7a2b1
Depends: libosmocore.git Change-Id If76a4bd2cc7b3c7adf5d84790a944d78be70e10a
Depends: osmo-gsm-masnuals.git Change-Id Icd75769ef630c3fa985fc5e2154d5521689cdd3c
Related: SYS#4986
|
|
Move 'doc' subdir further down to "make sure" the osmo-msc binary is built
before the docs.
Remove msc_vty_reference.xml from the source tree.
In manuals/Makefile.am use the new BUILT_REFERENCE_XML feature recently added
to osmo-gsm-manuals, and add a build target to generate the XML using the new
osmo-msc --vty-ref-xml cmdline switch.
Depends: I613d692328050a036d05b49a436ab495fc2087ba (osmo-gsm-manuals)
Change-Id: Ib872e7979c5b5a9da1347a3f326307844cf76536
|
|
Related: OS#2767
Depends: Ia2508d4c7b0fef9cdc57e7e122799a480e340bf7 (osmo-gsm-manuals)
Change-Id: Ie88dd2c7f7318a31ae04fbd6930346d92141fde5
|
|
Change-Id: Ice610e3db132dc50b7ddc3f3e324e8ad1bba5864
|
|
The example configs suggest to use a random ip-address as MGW address.
Lets use a loopback address here. This will suit the usual case where
MGW and MSC run together on the same machine.
Change-Id: Ie2b2094fdcfed45353d9ba22cb07eed626fd143c
|
|
Change-Id: I91d06921e4dca08428bf45fc1a3fd6e124599371
|
|
Since the split of OsmoNiTB, OsmoMSC does not deal with the radio
access network directly. Therefore the only purpose of T3212 is to
control subscriber expiration in the local VLR. The timeout value
indicated in System Information Type 3 needs to be configured
separately in the BSC/RNC.
This means that we don't need to store it in deci-hours anymore.
Let's move T3212 to the group of VLR specific timers, so it can
be configured and introspected using the generic 'timer' command,
and deprecate the old '[no] periodic location update' command.
It should be also noted that in the old code subscriber expiration
timeout was actually set to twice the T3212 value plus one minute.
After this change, we apply the configured value 'as-is', but
keep the old behaviour for 'periodic location update' command.
Change-Id: I9b12066599a7c834a53a93acf5902d91273bc74f
|
|
These timers so far were implemented as a list of unsigned integers,
which has never been initialized to any reasonable defaults. Since
they are used as state timeouts in several FSMs, we might end up
staying in some state forever.
Let's migrate to generic osmo_tdef API and use default values from
table 11.2 of 3GPP TS 24.008. This way the user can introspect and
change their values from the VTY / configuration file.
Change-Id: Ia8cf98da0aea0e626c5ff088a833d7359c43847f
Related: OS#4368
|
|
This change introduces several new VTY commands letting the user
a possibility to introspect and reconfigure some of the existing
timers implemented using libosmocore's osmo_tdef API.
At the moment this covers the following timers:
- MGW specific timers:
- X1 - MGCP response timeout,
- X2 - RTP stream establishing timeout,
- RAN specific timers (same names for GERAN and UTRAN):
- X1 - Authentication and Ciphering timeout,
- X2 - RAN connection release sanity timeout,
- X3 - Handover procedure timeout.
The following commands are introduced:
- 'enable' node:
- show timer [(mgw|mncc|sccp|geran|utran|sgs)] [TNNNN]
- 'config-msc' node:
- timer [(mgw|mncc|sccp|geran|utran|sgs)] [TNNNN] [(<0-2147483647>|default)]
Both MNCC and SCCP related timer definitions are empty at the
moment. Achieved by using osmo_tdef_group API of libosmovty.
Change-Id: I6024c104b6101666c8aa1108a043910eb75db9a5
Related: OS#4368
|
|
Neither it should appear in the interactive VTY nor in documentation.
Change-Id: I208faab69a40948af5d081edbeaf75f586dfb2e4
|
|
Change-Id: I14a5c9adff649406b4a079a75f86167ae6b95db4
|
|
Change-Id: I273bc4165c70cd54ed94ff5f99377189f3306f51
|
|
Change-Id: Iad1ef917a229c3be51bd8fbe155f009f81e7d72a
|
|
Change-Id: I4f4a0d644db0a2dd7c8eefd846ea6913c0b780ce
|
|
Please note that counter "sms:delivered" assumes "Delivered MT SMS",
but actually counts total number MT SMS delivery attempts. This
change describes its _actual_ (erroneous) behaviour.
Change-Id: I081cf962ce2658ceab02699f3cdee19658d00939
Related: OS#4273
|
|
Change-Id: I2c03d8424c218155dae9038dd7cc5660a290c5c8
|
|
Fix typos and common misspellings in code comments and log messages.
Change-Id: Ie66b89065f2100c1d2125ce5a6c9b1d58df7c8ad
|
|
Add voice_call_full.msc, generated from a real 2G<->3G voice call log fed to
msc_log_to_ladder.py.
The idea is to document how the voice call sequence of events changes in
upcoming patches.
Change-Id: I8a907d6a4ece1f3ad78da75a8c3e3e76afd5418d
|
|
Add script that reads in an osmo-msc log output and extracts the interesting
information for displaying a sequence chart of voice call log, in mscgen
format.
I want to visualize how the sequence of messages changes across patches. It is
error prone to do it manually, and re-doing the sequence chart for every patch
(and patch rework) would be prohibitively time consuming.
Change-Id: I2e4d8778f7b83dee558517a9b23450b817ee325d
|
|
Recently, the ability to run UTRAN without encryption was added, but the config
for it was tied to the A5 GERAN encryption configuration. This affected
osmo-msc's default behavior of Iu, breaking osmo-msc ttcn3 Iu tests: the ttcn3
test suite sets A5 to 0 (no encryption) but still expects Iu to enable air
encryption. Fix this "regression".
Add a separate vty config option for UEA encryption, even if it does not
provide full granularity to select individual UEA algorithms yet.
As a result, Iu default behavior remains to enable encryption regardless of the
A5 config. UTRAN encryption can be disabled by the new cfg option
"encryption uea 0" alone.
Even though the new vty command already allows passing various combinations of
the UEA algorithm numbers, only '0' and '1 2' are accepted as valid
combinations, to reflect current osmo-msc capabilities.
Revert most changes to the msc_vlr test suite in commit "do not force
encryption on UTRAN" (I04ecd7a3b1cc603b2e3feb630e8c7c93fc36ccd7): use new
net->iu_encryption instead of net->a5_encryption_mask.
Adjust/add to test_nodes.vty transcript tests.
Related: OS#4144
Change-Id: Ie138f2fcb105533f7bc06a6d2e6deccf6faccc5b
|
|
mncc_fsm.[hc] were renamed to mncc_call.[hc] during patch review, which failed
to carry through to this sequence chart.
Also fix the MNCC_ST_* to MNCC_CALL_ST_* and MNCC_EV_* to MNCC_CALL_EV_*.
Change-Id: I03ee1b43ab95dca3c43fdb9e92dc158aad5a4203
|
|
- add SIP messages, taken from OS#1683
- change some wording and clarify some message ordering
- have a separate sipcon1 and sipcon2 for the MO and MT sides
Change-Id: I6782e416dbd8ee88d093cbef722b0c5084f3865c
|
|
Remove the conditions that always enable encryption on UTRAN.
We so far lack an explicit configuration for UTRAN encryption, and this patch
does not add any either. Instead, whether UTRAN encryption is enabled is simply
triggered on whether GERAN has A5 encryption enabled (A5/n with n > 0). Though
GERAN and UTRAN encryption are not technically related at all, this makes UTRAN
behave like GERAN for now, until we implement a proper separate configuration
for UTRAN encryption.
Adjust the msc_vlr_test_* configuration by setting the net->a5_encryption_mask
such that the expected output remains unchanged. A subsequent patch
(I54227f1f08c38c0bf69b9c48924669c4829b04b9) will add more tests, particularly
cases of UTRAN without encryption.
Adjust manual and vty doc.
Related: OS#2783
Change-Id: I04ecd7a3b1cc603b2e3feb630e8c7c93fc36ccd7
|
|
Change-Id: Iffe159d4c0e0e9439f8719e0ddd28f06d4c80d9f
|
|
Depends: osmo-gsm-manuals.git f3a734e6777a902abfb03257277454c7a879aeb7
Change-Id: I70c488c3d9b05599b834a8608e6361c8aa43ef31
|
|
Change-Id: I01e54b5cf111677079a8ad57645d3ceb7834702a
|
|
Change-Id: I8c3e8bcda27f35118ab0e3d75621a02eec86f15c
|
|
Change-Id: I1ef0e8ae166d7fdc5e85716a961e8387d26bdd2c
Related: OS#1700
|
|
Change-Id: I3f5573f81460b40d4606fbcf0febcfd078a7bdca
Related: OS#1700
|
|
I have verified, that the resulting debian packages build in my own OBS
namespace (see the -doc packages):
https://download.opensuse.org/repositories/home:/osmith42/Debian_9.0/all/
https://build.opensuse.org/project/show/home:osmith42
Depends: Ib7251cca9116151e473798879375cd5eb48ff3ad (osmo-ci)
Related: OS#3899
Change-Id: Iafa9fba60b3ad4478ec24d6ba8538ec80ce99f52
|
|
DB counters has been used to save osmo_counters & osmo_rate_ctr to a local
sqlite databases every 60 seconds.
This is quite slow e.g. 1000 subscriber might slow the msc down.
Change-Id: Id64f1839a55b5326f74ec04b7a5dbed9d269b89c
|
|
3GPP TS 49.008 '4.3 Roles of MSC-A, MSC-I and MSC-T' defines distinct roles:
- MSC-A is responsible for managing subscribers,
- MSC-I is the gateway to the RAN.
- MSC-T is a second transitory gateway to another RAN during Handover.
After inter-MSC Handover, the MSC-I is handled by a remote MSC instance, while
the original MSC-A retains the responsibility of subscriber management.
MSC-T exists in this patch but is not yet used, since Handover is only prepared
for, not yet implemented.
Facilitate Inter-MSC and inter-BSC Handover by the same internal split of MSC
roles.
Compared to inter-MSC Handover, mere inter-BSC has the obvious simplifications:
- all of MSC-A, MSC-I and MSC-T roles will be served by the same osmo-msc
instance,
- messages between MSC-A and MSC-{I,T} don't need to be routed via E-interface
(GSUP),
- no call routing between MSC-A and -I via MNCC necessary.
This is the largest code bomb I have submitted, ever. Out of principle, I
apologize to everyone trying to read this as a whole. Unfortunately, I see no
sense in trying to split this patch into smaller bits. It would be a huge
amount of work to introduce these changes in separate chunks, especially if
each should in turn be useful and pass all test suites. So, unfortunately, we
are stuck with this code bomb.
The following are some details and rationale for this rather huge refactoring:
* separate MSC subscriber management from ran_conn
struct ran_conn is reduced from the pivotal subscriber management entity it has
been so far to a mere storage for an SCCP connection ID and an MSC subscriber
reference.
The new pivotal subscriber management entity is struct msc_a -- struct msub
lists the msc_a, msc_i, msc_t roles, the vast majority of code paths however
use msc_a, since MSC-A is where all the interesting stuff happens.
Before handover, msc_i is an FSM implementation that encodes to the local
ran_conn. After inter-MSC Handover, msc_i is a compatible but different FSM
implementation that instead forwards via/from GSUP. Same goes for the msc_a
struct: if osmo-msc is the MSC-I "RAN proxy" for a remote MSC-A role, the
msc_a->fi is an FSM implementation that merely forwards via/from GSUP.
* New SCCP implementation for RAN access
To be able to forward BSSAP and RANAP messages via the GSUP interface, the
individual message layers need to be cleanly separated. The IuCS implementation
used until now (iu_client from libosmo-ranap) did not provide this level of
separation, and needed a complete rewrite. It was trivial to implement this in
such a way that both BSSAP and RANAP can be handled by the same SCCP code,
hence the new SCCP-RAN layer also replaces BSSAP handling.
sccp_ran.h: struct sccp_ran_inst provides an abstract handler for incoming RAN
connections. A set of callback functions provides implementation specific
details.
* RAN Abstraction (BSSAP vs. RANAP)
The common SCCP implementation did set the theme for the remaining refactoring:
make all other MSC code paths entirely RAN-implementation-agnostic.
ran_infra.c provides data structures that list RAN implementation specifics,
from logging to RAN de-/encoding to SCCP callbacks and timers. A ran_infra
pointer hence allows complete abstraction of RAN implementations:
- managing connected RAN peers (BSC, RNC) in ran_peer.c,
- classifying and de-/encoding RAN PDUs,
- recording connected LACs and cell IDs and sending out Paging requests to
matching RAN peers.
* RAN RESET now also for RANAP
ran_peer.c absorbs the reset_fsm from a_reset.c; in consequence, RANAP also
supports proper RESET semantics now. Hence osmo-hnbgw now also needs to provide
proper RESET handling, which it so far duly ignores. (TODO)
* RAN de-/encoding abstraction
The RAN abstraction mentioned above serves not only to separate RANAP and BSSAP
implementations transparently, but also to be able to optionally handle RAN on
distinct levels. Before Handover, all RAN messages are handled by the MSC-A
role. However, after an inter-MSC Handover, a standalone MSC-I will need to
decode RAN PDUs, at least in order to manage Assignment of RTP streams between
BSS/RNC and MNCC call forwarding.
ran_msg.h provides a common API with abstraction for:
- receiving events from RAN, i.e. passing RAN decode from the BSC/RNC and
MS/UE: struct ran_dec_msg represents RAN messages decoded from either BSSMAP
or RANAP;
- sending RAN events: ran_enc_msg is the counterpart to compose RAN messages
that should be encoded to either BSSMAP or RANAP and passed down to the
BSC/RNC and MS/UE.
The RAN-specific implementations are completely contained by ran_msg_a.c and
ran_msg_iu.c.
In particular, Assignment and Ciphering have so far been distinct code paths
for BSSAP and RANAP, with switch(via_ran){...} statements all over the place.
Using RAN_DEC_* and RAN_ENC_* abstractions, these are now completely unified.
Note that SGs does not qualify for RAN abstraction: the SGs interface always
remains with the MSC-A role, and SGs messages follow quite distinct semantics
from the fairly similar GERAN and UTRAN.
* MGW and RTP stream management
So far, managing MGW endpoints via MGCP was tightly glued in-between
GSM-04.08-CC on the one and MNCC on the other side. Prepare for switching RTP
streams between different RAN peers by moving to object-oriented
implementations: implement struct call_leg and struct rtp_stream with distinct
FSMs each. For MGW communication, use the osmo_mgcpc_ep API that has originated
from osmo-bsc and recently moved to libosmo-mgcp-client for this purpose.
Instead of implementing a sequence of events with code duplication for the RAN
and CN sides, the idea is to manage each RTP stream separately by firing and
receiving events as soon as codecs and RTP ports are negotiated, and letting
the individual FSMs take care of the MGW management "asynchronously". The
caller provides event IDs and an FSM instance that should be notified of RTP
stream setup progress. Hence it becomes possible to reconnect RTP streams from
one GSM-04.08-CC to another (inter-BSC Handover) or between CC and MNCC RTP
peers (inter-MSC Handover) without duplicating the MGCP code for each
transition.
The number of FSM implementations used for MGCP handling may seem a bit of an
overkill. But in fact, the number of perspectives on RTP forwarding are far
from trivial:
- an MGW endpoint is an entity with N connections, and MGCP "sessions" for
configuring them by talking to the MGW;
- an RTP stream is a remote peer connected to one of the endpoint's
connections, which is asynchronously notified of codec and RTP port choices;
- a call leg is the higher level view on either an MT or MO side of a voice
call, a combination of two RTP streams to forward between two remote peers.
BSC MGW PBX
CI CI
[MGW-endpoint]
[--rtp_stream--] [--rtp_stream--]
[----------------call_leg----------------]
* Use counts
Introduce using the new osmo_use_count API added to libosmocore for this
purpose. Each use token has a distinct name in the logging, which can be a
globally constant name or ad-hoc, like the local __func__ string constant. Use
in the new struct msc_a, as well as change vlr_subscr to the new osmo_use_count
API.
* FSM Timeouts
Introduce using the new osmo_tdef API, which provides a common VTY
implementation for all timer numbers, and FSM state transitions with the
correct timeout. Originated in osmo-bsc, recently moved to libosmocore.
Depends: Ife31e6798b4e728a23913179e346552a7dd338c0 (libosmocore)
Ib9af67b100c4583342a2103669732dab2e577b04 (libosmocore)
Id617265337f09dfb6ddfe111ef5e578cd3dc9f63 (libosmocore)
Ie9e2add7bbfae651c04e230d62e37cebeb91b0f5 (libosmo-sccp)
I26be5c4b06a680f25f19797407ab56a5a4880ddc (osmo-mgw)
Ida0e59f9a1f2dd18efea0a51680a67b69f141efa (osmo-mgw)
I9a3effd38e72841529df6c135c077116981dea36 (osmo-mgw)
Change-Id: I27e4988e0371808b512c757d2b52ada1615067bd
|
|
Moved to doc/manuals/, with full commit history, in preceding merge commit.
Now incorporate in the build system.
Build with:
$ autoreconf -fi
$ ./configure --enable-manuals
$ make
Shared files from osmo-gsm-manuals.git are found automatically if
- the repository is checked out in ../osmo-gsm-manuals; or
- if it osmo-gsm-manuals was installed with "make install"; or
- OSMO_GSM_MANUALS_DIR is set.
Related: OS#3385
Change-Id: Ic3c5add3c87f0aadb1ffab668ce16be6d0805d33
|
|
Change-Id: I30ec6b3bc18fa36e7bad74ca445bc9949dcefe80
|
