Age | Commit message (Collapse) | Author | Files | Lines |
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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
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- 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
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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
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Change-Id: Iffe159d4c0e0e9439f8719e0ddd28f06d4c80d9f
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Depends: osmo-gsm-manuals.git f3a734e6777a902abfb03257277454c7a879aeb7
Change-Id: I70c488c3d9b05599b834a8608e6361c8aa43ef31
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Change-Id: I01e54b5cf111677079a8ad57645d3ceb7834702a
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Change-Id: I8c3e8bcda27f35118ab0e3d75621a02eec86f15c
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Change-Id: I1ef0e8ae166d7fdc5e85716a961e8387d26bdd2c
Related: OS#1700
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Change-Id: I3f5573f81460b40d4606fbcf0febcfd078a7bdca
Related: OS#1700
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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
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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
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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
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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
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Change-Id: I30ec6b3bc18fa36e7bad74ca445bc9949dcefe80
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Change-Id: I31f1d388b5323af8ece8a71a82c1b91f80d404e1
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Mention that the default is not openbsc.cfg, but osmo-*.cfg
Change-Id: I139e6004e28d6f918f31792e634214a6153edd0e
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Those graphs + message sequence charts are not yet used by any
of our manuals, but they should become used by the OsmoMSC user
manual once SGs interface support is added.
Related: OS#2583
Change-Id: Idfd3a66c18131b5458d183b8e66f62eaaab65991
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... to match the /etc/xml/catalog file on debian (no "www" in hostname)
Change-Id: Id9f3579c7f2bc3af13fe30b5268f249b6f59ed0d
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This is the first update since the libosmocore changes to the 'show
online-help' generated output. Hence the produced document now benefits from
the structural improvements:
- not repeating common commands for every node;
- using section names that match the VTY prompt.
Update msc_vty_additions.xml to match the new node ID scheme.
Change-Id: I6f1698dbc205334cf69234f88b124abfce54cc9a
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Since the NITB split, GSUP is used in all three network elements, so
make the protocol a shared chapter
Change-Id: Id2d7c27ef16eb0ebe5f60d625a1fcf42f1603f4f
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Change-Id: Idc105fd16511c6ea4f5069a57b217ea3319bdbec
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The initial goal was to make sure we don't have overall FORCE rules causing
unnecessary rebuilds -- annoying while writing documentation. As I looked
through possible dependencies, I finally understood what's going on here.
Remove code dup and nicely sort which belongs where in build/Makefile.*.inc. In
each, describe in a top comment how to use it, and also unify how they are
used:
- Rename Makefile.inc to Makefile.docbook.inc and refactor
- Add Makefile.vty-reference.inc
- Add Makefile.common.inc
Make sure that we accurately pick up all dependencies.
Drop use of the macro called 'command', that silenced the actual command lines
invoked and replaced them with short strings: it obscures what is actually
going on and makes the Makefiles hard to read and understand.
Each manual's makefile is greatly reduced to few definitions and a Makefile
include, e.g. one for asciidoc, one for VTY reference.
Move common/bsc_vty_additions.xml to OsmoBSC/vty/libbsc_vty_additions.xml, link
from OsmoNITB. It applies only to OsmoBSC and OsmoNITB.
Add a script that combines a VTY reference file with *all* additions files
found in a manual's vty/ dir. Call this from Makefile.vty-reference.inc.
Change-Id: I9758e04162a480e28c7dc83475b514cf7fd25ec0
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Change-Id: Ieb6a362a26a7e65199f68f5cd32d9b6b0e5d0fbf
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Add OsmoMSC and OsmoHLR to bibliography (even though the OsmoHLR manual does
not yet exist, a reference to it has been added in OsmoMSC's manual).
Change-Id: I9ecff2837fbf5fdc19675a726f6d70c21eb178ee
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Change-Id: I19f3755f7637dfc017a89f503831f7df8098a919
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This example configuration files lack port settings for the mgcp
client. Lets explicitly assign a port for the MGW and a local port.
For the local port lets use the IETF port number + 1. The reason
for this is that the default config for osmo-bsc already uses the
IETF port and in osmo-bsc and osmo-msc run on the same machine in
many setups.
Change-Id: I17453e0d30eec757aba9530b63eb5d1539cbdffc
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This is yet another unsused bit from the OsmoNITB legacy.
Related: OS#2528
Change-Id: I825e659da529257e5edec94d9d59f0e10c1b4c63
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OsmoMSC is using whatever reject cause is apropriate in the given
situation. This user-configurable reject cause only had relevance
in OsmoNITB, and hence it is an unused parameter that can be removed
in OsmoMSC.
Related: OS#2528
Change-Id: Ie1f39e706477aaf42051877b52d4b3ae1c5f138e
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osmo-mgw.git is changing the mgcp_client_vty API to use 'mgw' instead of
'mgcpgw'. Fix example configs after that patch is merged.
Depends: I1d43d42929dc9162e57640499526fb7cadbcfbe6
Change-Id: Ib4c5ec1046a3c7a916ecfb7e5aa83dfe2f5ea8bf
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Change-Id: Iba6253d9bf8d4a9d9f6f26ba045e6c7f0dc7f8f2
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The doc/examples/osmo-msc SCCP config examples with 10.23.42.1 as asp ip-remote
cause >5 minutes timeout for each VTY config test being run before the VTY
becomes available. This hugely elongates the config tests, we didn't spot it
before because it does succeed after that timeout. Rather use link-local
addresses in order to immediately note the lack of connection and carry on with
the VTY config tests.
Related: OS#2333
Change-Id: I5ea4ef8a7e181bd3a38edf9c3b5d098f6ba65ee5
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Change-Id: I4da6724cd4348e92dfd06516f82af06c97277ef9
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These either remain from openbsc.git or slipped in while applying recent
patches from openbsc.git and do not belong in osmo-msc.
Empty out contrib: remove things that are either obviously unrelated to
osmo-msc, or seem old and/or esoteric.
Change-Id: I49957769e09eed6d723bf7c3777024b62b3480fd
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Change-Id: Icf025e5ea8d180613b3114282951c9afa67af9a7
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In SGSN, actually place the port in the SGSN config by default, so that the
gsup port may now be omitted in the VTY config (the IP address suffices).
Adjust the osmo-sgsn.cfg example.
Depends: I4222e21686c823985be8ff1f16b1182be8ad6175 (libosmocore)
Change-Id: I50f2040e2eb0baacb43849e93cfed10cbc2fc156
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This was originally a long series of commits converging to the final result
seen in this patch. It does not make much sense to review the smaller steps'
trial and error, we need to review this entire change as a whole.
Implement AoIP in osmo-msc and osmo-bsc.
Change over to the new libosmo-sigtran API with support for proper
SCCP/M3UA/SCTP stacking, as mandated by 3GPP specifications for the IuCS and
IuPS interfaces.
From here on, a separate osmo-stp process is required for SCCP routing between
OsmoBSC / OsmoHNBGW <-> OsmoMSC / OsmoSGSN
jenkins.sh: build from libosmo-sccp and osmo-iuh master branches now for new
M3UA SIGTRAN.
Patch-by: pmaier, nhofmeyr, laforge
Change-Id: I5ae4e05ee7c57cad341ea5e86af37c1f6b0ffa77
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A number of the GSM timers (including T3109) had no reasonable
default values if not specified in the VTY / config file. Together
with unconditional writing to the config file, this created
config files with a persistent setting for important timers as '0'.
To make things worse, many of our example cofig files suffered from the
same problem.
Let's avoid this from happening by
* having reasonable defaults if nothing specified in the config file
* conditionally savingg timers only if they differ from default
* reject any timer values that state zero during start-up (see previous
commit)
Change-Id: Iaac0bfca423852b61d8b9eb1438157ef00d0d8c8
Closes: OS#2380
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For the vty tests, add osmo-sgsn-accept-all.cfg (that does not need an HLR) and
use in vty_test_runner.py, otherwise the 'show sgsn' command will reply that it
could not connect to the HLR, failing the vty test which expects empty.
Change-Id: Ie3b2013198d3e2b780a4e31c36b89b58129dcacd
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This helps in providing 3G software packages for the sysmoNITB hardware, which
uses 10.23.24.1 for SGSN and 10.23.24.2 for GGSN.
However, in order to not break the python tests, the osmo-sgsn.cfg example
still uses 127.0.0.1 as local address.
Change the GGSN address to 127.0.0.2, because SGSN and GGSN cannot co-exist on
the same address (the GTP port number is fixed by spec: no IE to communicate a
differing port, so it has to be the standard GTP port for both).
Change-Id: Ie3a25f6771ed6e620cb2b315638c622a9a24e530
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osmo-nitb becomes osmo-msc
add DIUCS debug log constant
add iucs.[hc]
add msc vty, remove nitb vty
add libiudummy, to avoid linking Iu deps in tests
Use new msc_tx_dtap() instead of gsm0808_submit_dtap()
libmgcp: add mgcpgw client API
bridge calls via mgcpgw
Enable MSC specific CTRL commands, bsc_base_ctrl_cmds_install() still needs to
be split up.
Change-Id: I5b5b6a9678b458affa86800afb1ec726e66eed88
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Original libvlr code is by Harald Welte <laforge@gnumonks.org>,
polished and tweaked by Neels Hofmeyr <nhofmeyr@sysmocom.de>.
This is a long series of trial-and-error development collapsed in one patch.
This may be split in smaller commits if reviewers prefer that. If we can keep
it as one, we have saved ourselves the additional separation work.
SMS:
The SQL based lookup of SMS for attached subscribers no longer works since the
SQL database no longer has the subscriber data. Replace with a round-robin on
the SMS recipient MSISDNs paired with a VLR subscriber RAM lookup whether the
subscriber is currently attached.
If there are many SMS for not-attached subscribers in the SMS database, this
will become inefficient: a DB hit returns a pending SMS, the RAM lookup will
reveal that the subscriber is not attached, after which the DB is hit for the
next SMS. It would become more efficient e.g. by having an MSISDN based hash
list for the VLR subscribers and by marking non-attached SMS recipients in the
SMS database so that they can be excluded with the SQL query already.
There is a sanity limit to do at most 100 db hits per attempt to find a pending
SMS. So if there are more than 100 stored SMS waiting for their recipients to
actually attach to the MSC, it may take more than one SMS queue trigger to
deliver SMS for subscribers that are actually attached.
This is not very beautiful, but is merely intended to carry us over to a time
when we have a proper separate SMSC entity.
Introduce gsm_subscriber_connection ref-counting in libmsc.
Remove/Disable VTY and CTRL commands to create subscribers, which is now a task
of the OsmoHLR. Adjust the python tests accordingly.
Remove VTY cmd subscriber-keep-in-ram.
Use OSMO_GSUP_PORT = 4222 instead of 2222. See
I4222e21686c823985be8ff1f16b1182be8ad6175.
So far use the LAC from conn->bts, will be replaced by conn->lac in
Id3705236350d5f69e447046b0a764bbabc3d493c.
Related: OS#1592 OS#1974
Change-Id: I639544a6cdda77a3aafc4e3446a55393f60e4050
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- bscs.config needed by the vty tests was not picked up as a dist file, because
its suffix is not 'cfg'. Rename to *.cfg. Apply this rename in
vty_test_runner.py and osmo-bsc_nat.cfg.
- Remove restart counters after external tests, otherwise distcheck complains
about uncleaned files.
- Add contrib/ipa.py to EXTRA_DIST, hence add a Makefile.am to contrib/.
Otherwise the python tests cannot find that dependency.
Change-Id: I42b55cb1125099afc3a8e3f87c0e398426b2e2a9
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This is the first step in creating this repository from the legacy openbsc.git.
Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.
Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7
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