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The mgcpgw client currently lacks support for DLCX. This patch
adds a generator function to generate a DLCX command as well.
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Improve the way the BSC executes its RESET/RESET-ACK sequence.
Currently only a simple bool variable serves as a state holder.
We set this variable to true when we receive the RESET-ACK
message. Unfortunately no further checking is done. This
patch replaces the old mechanism with a more elaborated
implementation which also detects a loss of the connection
and makes sure to reconnect properly afterwards. Also the
all open connections are closed on connection loss
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obtain the permitted speech and the prefered channel parameters
and signal it to the MSC with the channel type field.
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This patch adds the support for the RTP IP-Address/Port assignment.
The post communicated via the assignment request is now transmitted
via RSL/IPACC to the BTS. The Response containing the RX-Port at
the BTS side is communicated back to the MSC.
Since we plan to add a private MGCPGW to each BSC, this has to
be extended. Currently it only creates a direct connection to
the BTS. This will be introduced with a future patch.
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This changes 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.
Only the ASP (client) is used, assuming that both the HNB-GWs and RNCs
as well as the MSCs and SGSNs are all connecting as ASP to some STP/SGW
which offers M3UA server functionality as well as point-code and/or
global title based routing.
Tweaked-by: nhofmeyr (test expectation)
Change-Id: If0ff956fbf1484899d59ae1a5885543bca31645b
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The ip.access nano3G needs the first RTP payload's first two bytes to read hex
'e400', or it will reject the RAB assignment. Add flag
patched_first_rtp_payload to mgcp_rtp_state to detect the first RTP payload on
a stream, and overwrite its first bytes with e400. This should probably be
configurable, but seems to not harm other femto cells (as long as we patch only
the first RTP payload in each stream). Only do this when sending to the BTS
side.
Change-Id: I31a4475f42d59fd5704d52ee6e473e270db6d779
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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
mgcp: hack RAB success from nano3G: patch first RTP payload
The ip.access nano3G needs the first RTP payload's first two bytes to read hex
'e400', or it will reject the RAB assignment. Add flag
patched_first_rtp_payload to mgcp_rtp_state to detect the first RTP payload on
a stream, and overwrite its first bytes with e400. This should probably be
configurable, but seems to not harm other femto cells (as long as we patch only
the first RTP payload in each stream). Only do this when sending to the BTS
side.
Change-Id: Ie13ff348117e892d41b8355ab6c24915301eaeaf
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Disable large parts of the code that depend on BSC presence.
Don't set msg->lchan nor msg->dst.
Don't use lchan in libmsc.
Decouple lac from bts.
Prepare entry/exit point for MSC -> BSC and MSC -> RNC communication:
Add msc_ifaces.[hc], a_iface.c, with a general msc_tx_dtap() to redirect to
different interfaces depending on the actual subscriber connection.
While iu_tx() is going to be functional fairly soon, the a_tx() is going to be
just a dummy for some time (see comment).
Add Iu specific fields in gsm_subscriber_connection: the UE connection pointer
and an indicator for the Integrity Protection status on Iu (to be fully
implemented in later commits).
Add lac member to gsm_subscriber_connection, to allow decoupling from
bts->location_area_code. The conn->lac will actually be set in iu.c in an
upcoming commit ("add iucs.[hc]").
move to libcommon-cs: gsm48_extract_mi(), gsm48_paging_extract_mi().
libmsc: duplicate gsm0808 / gsm48 functions (towards BSC).
In osmo-nitb, libmsc would directly call the functions on the BSC level, not
always via the bsc_api. When separating libmsc from libbsc, some functions are
missing from the linkage.
Hence duplicate these functions to libmsc, add an msc_ prefix for clarity, also
add a _tx to gsm0808_cipher_mode():
* add msc_gsm0808_tx_cipher_mode() (dummy/stub)
* add msc_gsm48_tx_mm_serv_ack()
* add msc_gsm48_tx_mm_serv_rej()
Call these from libmsc instead of
* gsm0808_cipher_mode()
* gsm48_tx_mm_serv_ack()
* gsm48_tx_mm_serv_rej()
Also add a comment related to msc_gsm0808_tx_cipher_mode() in two places.
Temporarily disable all paging to be able to link libmsc without libbsc.
Skip the paging part of channel_test because the paging is now disabled.
In osmo-nitb, paging is done on BSC level and MSC level "at the same time".
When the new MSC is fully operational, paging will be controlled separately on
the MSC level, and the BSC (RNC) level will be instructed over an IuCS or
A-interface to negotiate paging with the MS (UE). This MSC level paging does
not yet exist and will be added in subsequent commits.
msc_compl_l3(): publish in .h, tweak return value. Use new libmsc enum values
for return val, to avoid dependency on libbsc headers. Make callable from
other scopes: publish in osmo_msc.h and remove 'static' in osmo_msc.c
add gsm_encr to subscr_conn
move subscr_request to gsm_subscriber.h
subscr_request_channel() -> subscr_request_conn()
move to libmsc: osmo_stats_vty_add_cmds()
gsm_04_08: remove apply_codec_restrictions()
gsm0408_test: use NULL for root ctx
move to libbsc: gsm_bts_neighbor()
move to libbsc: lchan_next_meas_rep()
move vty config for t3212 to network level (periodic lu)
remove unneccessary linking from some tests
remove handle_abisip_signal()
abis_rsl.c: don't use libvlr from libbsc
Change-Id: I9cf80f9c2c8a53a29e42f000029e680a9922cb41
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SGSN: Don't indicate GERAN in Iu mode PDP CTX ACT REQ to GGSN
sgsn_ranap_iu_event: handle some events without valid MM context
sgsn init: pass sgsn_config pointer to sgsn_vty_init(), not sgsn_parse_config
IuPS: cosmetic: explicitly check RAN type; move comment
Change-Id: I8375ba42dd47d7ccd9ce9290767d6f8653a23b94
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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 development collapsed in one patch. The original
history may still be available as branch neels/vlr_orig.
TODO: This commit may be split in several smaller changes before merging to
master.
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.
Related: OS#1592
Change-Id: I702ba504ce2de93507312c28eca8d11f09f4ee8b
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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 development collapsed in one patch. The original
history may still be available as branch neels/vlr_orig.
Related: OS#1592
Change-Id: I3f75de5f0cc2ff77f276fd39832dd3621309c4b9
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Before, each GSUP client would contact the HLR with an identical unit id, i.e.
"SGSN-00-00-00-00-00-00", with the result that some messages were sucked off by
the wrong client.
Pass explicit unit name from each gsup client user, so that OsmoMSC is "MSC"
and OsmoSGSN is "SGSN". Hence the HLR can properly route the messages.
Todo: also set some values instead of the zeros.
Unrelated cosmetic change while editing the arguments: gsup_client_create()'s
definition's oap client config arg name mismatched the one used in the
declaration. Use oapc_config in both.
Change-Id: I3f8d6dd47c7013920e2a4bde006ed77afd974e80
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When we are performing Rx sensitivity testing on a BTS, we want to
deactivate the connection failure criterion / radio link timeout, i.e.
no matter how many SACCH frames in uplink are failed to decode, the BTS
should never close the channel.
OsmoBTS Change-Id I736f21f6528db5c16fa80cdb905af20673797be5 covers a way
how this behavior can be requested from the BTS via an OML attribute.
This patch adds support to the BSC to actually set that attribute.
Do not use this in production networks, as the BTS will keep open radio
channels indefinitely even if the phone is gone and no longer
transmitting anything. This is a pure testing feature.
Change-Id: I6cb94e0f024934f7baeeb728ca9ed3042fbf16d2
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Previously the SI generation lead to setting the BCCH SIs for all TRX in
a multi-trx setup. This is because we create the SIs globally but
si_valid appears to be limited to the 'current' trx. Warn if we attempt
to set SIs for the BCCH on a trx that does not have a BCCH.
Change-Id: Ie0e288252a2e7709c4dae16b96a0b1512278847f
Tweaked-by: Max <msuraev@sysmocom.de>
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To support segmented SI2quater as per 3GPP TS 44.018 we'll have to
support multiple SI messages (up to 16 for SI2q) for a given type in
contrast to existing 1:1 mapping:
* expand storage space to hold up to 16 SI messages (spec limit)
* add assertions for budget calculations
* generate multiple SI2q messages
* adjust SI2q-related tests
* use precise check for number of SIq messages instead of approximate
estimation
Change-Id: Ic516ec9f0b821557d9461ae9f1c0afdd786f3b05
Related: OS#1660
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* move SI2quater related defines to shared header
* add define from OsmoBTS which checks for presence of a given SI
message in gsm_bts struct. Rename it to avoid conflicts with OsmoBTS
code and to match naming conventions of similar macros.
Change-Id: I11432c93c772d1ead6d45a7bb0f1d13d492c82f1
Related: OS#1660
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Request per-TRX attributes in addition to BTS attributes.
Change-Id: I2b61131b9930afd03357c0b66947ee856d58cc46
Related: OS#1614
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osmo_talloc_replace_string() was introducd into libosmocore in 2014, see
commit f3c7e85d05f7b2b7bf093162b776f71b2bc6420d
There's no reason for us to re-implement this as bsc_replace_string
here.
Change-Id: I6d2fcaabbc74730f6f491a2b2d5c784ccafc6602
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In addition to compile-time defined BTS model features we also need
run-time BTS features reported by BTS via OML. This should be shared by
BSC and BTS. To accommodate for this, add following:
* features bitvec to gsm_bts struct
* features descriptions
* comments to avoid confusion between 2 feature sets
* helper functions to set/query particular feature
* upper boundary on number of supported features and assertion for it
Change-Id: I02bd317097ba66585c50ebd4e8fc348f6dc3dad9
Related: OS#1614
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Rename gsm_bts_has_feature() -> gsm_btsmodel_has_feature() and adjust
type signature to match gsm_btsmodel_set_feature() function and avoid
confusion with upcoming functions to check/set BTS features reported
over OML.
Change-Id: I97abdedbef568e0c2fbd37c110f7d658cf20e100
Related: OS#1614
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Since commit b4999b60d48bcbb5aa575973d068e07ab672e095 we created PCU
sockets at hard-coded paths in the filesystem by default for all BTSs.
This is inflexible and prevents the use of multiple BSC instances on a
single filesystem, or the placement of the sockets in a more secure
location than /tmp.
The new approach with this patch is that
* no PCU sockets are created by default
* only for those BTSs where a 'pcu-socket' is configured via VTY,
the socket will actually be created
Change-Id: Ie9079470584777dcc31f85f9bf0808f479156ccb
Closes: OS#2293
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We generally use const pointers for input arguments. Also, document
input/output arguments of function and add spec reference.
Change-Id: I2532cde69a18e3b021f7371e68f67a28a43d8b5f
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The PCU sends imm.ass messages in response to a rach request. Those
messages need to be forwarded to RSL in order to get them send. This
commit introduces the required functionality for that
Change-Id: Ice099c4ed7008200ed179e581aba1899c6c29455
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Ericsson allows to attach a reference to immediate assignments. A
confirmation of the transmission is then sent back, but only containing
the reference, not the whole RLC packet.
Change-Id: I945f49e62e2a74a7906e2d49940927773edd04a9
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Adds a basic version of a pcu socket interface, similar
to the one that can be found in osmo-bts.
Change-Id: Ib13cb4099d12fa71e9e0b8727e19ab29e11909b2
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Change-Id: I23d3be5610a5a46098d2b12feed4245828599aae
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The newline and $NULL manage to append a trailing space to the 'openbsc' dir.
This was broken in commit 7b6673fa06dada3ec4586b1c0d735e9df4177a48
"Consistenly format variables in */Makefile.am files"
by Change-Id Ifa21513c007072314097b7bec188579972dc1694
Add a comment to prevent this in the future.
Reported-by: Andreas Mueller <andreas.mueller@criticallabs.org>
Change-Id: I218027459e3b2aaa817d91eb3f69d9c0b10dcd4e
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The gsm_data_shared.h header is installable and used by OsmoBTS so it
should not include any private (non-installable headers) to avoid
OsmoBTS' build failures.
Change-Id: Ic25031101fc01bd732fe691132c081ad05fa6a4b
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In preparation for extended SI2q messages:
* add SI2q-specific accessor macro
* add *_offset variables to gsm_bts struct
* internalize memory check while generating rest octets - introduce
budget concept (number of bits available in a given message)
* internalize *arfcn_size() functions as they are not needed outside of
si2q_num() anymore
* change rest octets generation to work with gsm_bts struct directly
* do not generate rest octets if no SI2q is necessary
* adjust unit tests accordingly (cosmetic changes only to avoid
regressions)
Requires: I92e12e91605bdab9916a3f665705287572434f74 in libosmocore
Change-Id: Ib554cf7ffc949a321571e1ae2ada1160e1b35fa6
Related: RT#8792
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* use define for number of attributes instead of magic number
* add sub_model to gsm_bts struct
* expand number of BTS features
* mark attributes parameter to abis_nm_get_attr() as const
Change-Id: I7ecb0c4339530d3a8354a2f94b34063dda87e030
Related: OS#1614
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Change-Id: Ief81db0b3653fec180e60776ff9bcb0ac1357217
Related: OS#1614
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* move value_string definition and corresponding functions for BTS type
to shared header to make it re-usable by OsmoBTS
* use consistent function naming
* add similar functions for BTS variant
* add enum to be used by OML Attribute Reporting to distinguish between
type, variant and other info
Change-Id: Ida94725a6fce968443541e3526f48f13758031fd
Related: OS#1614
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Hold on with the GSM 04.11 RP-ACK/RP-ERROR that we send to the MS until
we get a confirmation from the ESME, via SMPP DELIVER-SM-RESP, that we
can route this sms somewhere we can reach indeed.
After this change, the conversation looks like this:
MS GSM 03.40 SMSC SMPP 3.4 ESME
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| SMS-SUBMIT | |
|------------------->| |
| | DELIVER-SM |
| |---------------->|
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| | DELIVER-SM-RESP |
| |<----------------|
| GSM 04.11 RP-ACK | |
|<-------------------| |
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Before this patch, the RP-ACK was sent back straight forward to the MS,
no matter if the sms can be route by the ESME or not. Thus, the user
ends up getting a misleading "message delivered" in their phone screen,
when the message may just be unroutable by the ESME hence silently
dropped.
If we get no reply from the ESME, there is a hardcoded timer that will
expire to send back an RP-ERROR to the MS indicating that network is
out-of-order. Currently this timer is arbitrarily set to 5 seconds. I
found no specific good default value on the SMPP 3.4 specs, section 7.2,
where the response_timer is described. There must be a place that
describes a better default value for this. We could also expose this
timer through VTY for configurability reasons, to be done later.
Given all this needs to happen asyncronously, ie. block the SMSC, this
patch extends the gsm_sms structure with two new fields to annotate
useful information to send the RP-ACK/RP-ERROR back to the MS of origin.
These new fields are:
* the GSM 04.07 transaction id, to look up for the gsm_trans object.
* the GSM 04.11 message reference so the MS of origin can correlate this
response to its original request.
Tested here using python-libsmpp script that replies with
DELIVER_SM_RESP and status code 0x0b (Invalid Destination). I can see
here on my motorola C155 that message cannot be delivered. I have tested
with the success status code in the SMPP DELIVER_SM_RESP too.
Change-Id: I0d5bd5693fed6d4f4bd2951711c7888712507bfd
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Requires libosmocore with Ib63b6b5e83b8914864fc7edd789f8958cdc993cd.
Change-Id: Ib94db414e94a2a1f234ac6f1cb346dca1c7a8be3
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Previously it was only in gsm_bts_model which is not initialized on BTS
side. It's more convenient to have it in the struct which is available
to BTS as well.
Change-Id: I54fde8c4ccd5d994af08074f5864446e79a93a25
Related: OS#1614
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Supporting SI2quater as per 3GPP TS 44.018 will require chnages to the
way System Information is stored because it uses 1:n instead of 1:1
mapping between SI type and generated SI content. This should not affect
other SI types though. To facilitate this transition:
* convert the code to always use GSM_BTS_SI helper instead of accessing
buffer directly
* make helper more robust by adding extra parenthesis
* add similar helper for gsm_lchan
* add function estimating number of SI2quater message to hold configured
number of (U|E)ARFCNs
* add SI2q index/count fields and pass them to rest_octets generator
explicitly
* internalize buffer access in generate_si* functions
Change-Id: I74e4e3cb86364cec869a1472a41b4a95af0d50dd
Related: RT#8792
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* set proper flag when saving MS Timing Offset
* use gsm_subscriber's IMSI or lchan's name if bsc_subscriber is unknown
* add comments with spec reference
* store/display MS Timing Offset instead of raw Timing Offset field from
RSL
* Compute MS Timing Offset [-63; 192] from Timing Offset field [0; 255],
adjust structure gsm_meas_rep with proper type to store it
Change-Id: I7e003d23a6edb714c5f17688fd6a8edac131161d
Related: OS#1574
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* add version string to gsm_bts
* add PCU version string to gsm_bts
* rename GSM_BTS_TYPE_OSMO_SYSMO -> GSM_BTS_OSMOBTS to avoid confusion
between BTS model and variant
* add variant enum to gsm_bts_model using enum with variants for each
hw vendor of OsmoBTS
* show connected PCU version (if available) in vty via 'show bts'
This will come in handy when logging details regarding particular BTS
reported via OML, see:
Related: OS#1614
Change-Id: I6710d53115f34634a7b70969cc05fd5c72ff8ab2
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This option allows to enable or disable TCH/F allocation on the
TCH/F_TCH/H_PDCH timeslots. Until now, source code modification
was required to enable this feature.
Related: OS#1778
Change-Id: Id18cab25844dc854a66b4e2713e90c3f43afa712
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From a human admin viewpoint it doesn't make sense to count the messages sent:
When we use TMSIs, we first send a LU Accept with a new TMSI, and then expect
the MS to respond with a TMSI Realloc Complete message. When that fails to come
through, the LU actually ends in failure, even though a LU Accept was sent.
If a conn breaks/vanishes during LU, we cancel the LU without sending any reply
at all, so the failed LU would not be counted.
Instead, count Location Updating results, i.e. completion and failures.
(With the new VLR developments, LU counters need to be triggered in completely
different places, and this patch prepares for that by providing sensible
counters.)
Change-Id: I03f14c6a2f7ec5e1d3ba401e32082476fc7b0cc6
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message
ericsson can handle a reference at the end of a imm assign command which is used in
the confirm response. The confirm response is only sent if the trailer is present.
Change-Id: I88560291b5a3a3d7a0bac4d3c089b45f1f6b297f
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Change-Id: I66541f9b20e7fd67fbec329283fc3c821c970a56
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When the BTS is configured to use a SuperChannel and it is using a
unix domain socket based transport towards the L2TP daemon, then
we must instruct the L2TP daemon to instruct the SIU to change the Abis
Lower Transport Mode using the ALTCRQ / ALTCRP L2TP signalling.
Change-Id: I672bfaa09c42fbeb0c8459f24b2222b952de954b
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When using a BSC located PCU the BSC must understand PDCH requests.
Change-Id: Ie7f4ed000cf1b40d269873cf0ddf5ff9f5bbc18a
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In a future commit, gsm_subscriber will be replaced by vlr_subscr, and it will
not make sense to use vlr_subscr in libbsc. Thus we need a dedicated BSC
subscriber: struct bsc_subscr.
Add rf_policy arg to bsc_grace_paging_request() because the bsc_subscr will no
longer have a backpointer to gsm_network (used to be via subscr->group).
Create a separate logging filter for the new BSC subscriber. The implementation
of adjusting the filter context is added in libbsc to not introduce
bsc_subscr_get/_put() dependencies to libcommon.
During Paging Response, fetch a bsc_subscr from the mobile identity, like we do
for the gsm_subscriber. It looks like a duplication now, but will make sense
for the VLR as well as for future MSC split patches.
Naming: it was requested to not name the new struct bsc_sub, because 'sub' is
too ambiguous. At the same time it would be fine to have 'bsc_sub_' as function
prefix. Instead of struct bsc_subscriber and bsc_sub_ prefix, I decided to
match both up as struct bsc_subscr and bsc_subscr_ function prefix. It's fast
to type, relatively short, unambiguous, and the naming is consistent.
Add bsc_subscr unit test.
Related: OS#1592, OS#1594
Change-Id: Ia61cc00e8bb186b976939a4fc8f7cf9ce6aa3d8e
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Add MS TIMING OFFSET (3GPP TS 48.058 § 8.4.8) and P offset (3GPP TS
45.010 § 1.2) which can be used to compute MS TO from known TA.
This will be used by osmo-bts (see
I4dfe5c48834a083e757d5de3236a02e15a238b28) to provide MS TO as part of
RSL MEASUREMENT RESULT.
Change-Id: I8bda57c8d6c15bbb803eca708931556dae118a00
Related: OS#1574
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Add via_ran to gsm_subscriber_connection to indicate whether a conn is coming
in via 2G/GERAN/A-Interface or 3G/UTRAN/Iu-Interface. Prepares for Iu, but
also for libvlr to decide between GSM or UMTS Auth.
Until actual Iu support is merged to master, this indicator will aid VLR unit
testing.
At some point we may also add RAN_GERAN_IU; it's not on the agenda yet, but to
clearly distinguish the names if we want to add it, explicitly name the ones we
have RAN_GERAN_A and RAN_UTRAN_IU.
Change-Id: I93b870522f725170e4265a5543f6b680383d7465
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