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Depends: libosmocore change-id I0fca8e95ed5c2148b1a7440eff3fc9c7583898df
Change-Id: If1c49faf6e1757cb16b383dd2db87b48bc94eee6
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Log just as prominently to mark CM Service Accept.
Change-Id: I7afe9d4f69e5525ede7a7c380a2c48fb2c5054b6
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Change-Id: I378af1fa06d8a45c01a80a381be143572e1dc41f
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Change-Id: I3c4687aafe495e60b1568e6505dbf847adab37f1
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Don't end a CM Service Request "lock" too indiscriminately. Trigger only on new
transactions that start.
Change-Id: I4f64b8d91cfb1e61be4563594b2d6b23144af5bc
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Change-Id: I16ceeeede46f244fd454758cc223673dd51cfc72
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Change-Id: Ied7663f856cfce6e7ed1c0314fd558af85091dcc
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Indeed the easiest way of ensuring all code paths can cause conn discarding
while still all code paths can check on whether a conn needs to be discarded.
Change-Id: I641fe36d9fa2077e3caf63cc583aaa380603bff0
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Change-Id: Ib1e285b54cd7aaa0895e9c51a47720f446a07183
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Change-Id: I99ca36857f5e4c9ae113017955611fd92256123c
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Change-Id: I7469da0ed19e1e8b292422aadfd3ae2ebc2afd57
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Change-Id: I9b9ad1379324f1405bd02a05fcd7ef8c53bacbde
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Change-Id: Ice3c71f048b097f2c2de8bd4f4508a7ca2cb1cf5
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Change-Id: I3564291a6d20da13a8d75c71b0c425da4948d412
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Change-Id: Ie8814d856bbe4c111007a696a4d26576854c134f
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Change-Id: I45651fd4cf3f4da8ad67251bbb3b627888e76d9c
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Change-Id: I90e2c1aa7575d5fa6e0374f5022cbb25fc3f7699
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Change-Id: Ibe2ab17b3fa3a506a2e841ba979ea4175e3a21e8
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Change-Id: I5c0493feaec775461b5a017c36b93cc2ad63c896
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To accomodate the ip.access nano3G without having to recompile, make the
RAB Assignment's Transport Layer Address IE's format configurable, in both
osmo-msc and osmo-sgsn.
The long term perspective is to somehow detect which address encoding a given
3G cell prefers, but for the time being just configure it globally and set each
ue_conn_ctx to the global setting upon creation.
Add VTY command to iu_vty.c, with args passed to iu_vty_init() to insert
at an arbitrary VTY node, so that it can be used both for osmo-msc and
osmo-sgsn. Add generic iu_vty_config_write() to write out the config.
Call iu_vty_init() from msc_vty_init(); msc_vty_init() is in libmsc,
hence linking of osmo-msc now needs libiu to come after libmsc, so move
that further down.
Change-Id: I93728314742b327336f3fb6de98e6457f687e1f9
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The future perspective is to remember the preferred RAB Transport Layer Address
encoding for each 3G cell that is connected, so store per UE conn instead of
globally hardcoding.
Add rab_assign_addr_enc member to ue_conn_ctx. Thus the iu_rab_act_cs() and
iu_rab_act_ps() functions no longer need the explicit use_x213_nsap argument.
Add include/openbsc/common.h in order to define the enum nsap_addr_enc, in a
separate file to be able to easily include it in all of libmsc, libiu and
gprs/* without creating include cycles.
Set the rab_assign_addr_enc when an MM ctx is created for iu, and whenever the
ue_conn_ctx for an Iu MM ctx is updated. This looks a bit clumsy so far, the
hope is that there will be a nice way to setup the ue_conn_ctx prior to that.
Change-Id: I49bb5736df7bdfdd55d3e7b74ee559595cfd2f7d
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Do the same as we do in 2G: release the connection as soon as nothing else
is pending for a given subscriber.
Before, osmo-msc would wait for the UE "to get bored" and send an Iu
release. But the CN should stay lean on connections. Also, 25.413[1] in section
7, 6th point states:
"While the Iu release is managed from the CN, the RNC has the capability to
request the release of all Iu connection resources from the corresponding Iu
connection."
So far we did not manage Iu release from osmo-msc at all.
Use the same mechanism we use in 2G: from msc_release_connection(), just before
freeing the gsm_subscriber_conn, invoke a CN initiated Iu Release command to
the UE.
This works around OS#1816 ("USSD only works when IuCS is released", on nano3G),
because the Iu conn is now released right after every signalling, so that
typically no two requests will use the same conn.
In iu.h/iu.c, add iu_tx_release(), absorbing almost all of the code from
ranap_handle_co_iu_rel_req().
Add stub to db_test.c, necessary to build it without linking libiu.
[1] 3GPP TS 25.413 v12.4.0 Release 12 / ETSI TS 125 413 V12.4.0 (2015-04)
Related: OS#1816
Change-Id: Ic12bd6f3666f6fd42bd6d9fdae1c93abee3b6786
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Don't remove the gsm_subscriber_connection without an Iu Release.
The 2G paradigm is to close a subscriber connection as soon as nothing else is
pending.
In 3G however, the conn is often discarded even though the IuCS stays open and
valid, which confuses the situation: before the UE releases a bit later, we
would try to page the subscriber unsuccessfully, because the UE expects to
already be connected.
To first fix the discrepancy of Iu vs. subscr release, never discard
gsm_subscriber_connections when msc_release_connection() is called.
This creates a "lazy" CN that keeps connections open as long as the UE will
tolerate. It is really fast in sending many SMS in close succession, but is
certainly a bad CN design choice: we should rather stay lean on connections.
A subsequent commit will change this, but I decided to keep this commit as a
reference, for when we'd like to test situations that should re-use an
established connection.
Change-Id: I012378cfa432d791146db387554ec1909de05297
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Change-Id: I7fda4304631fc24bbd1bebe911b8403a942fcf53
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Change-Id: Ie259e30bc532fe9817c96562022ac33443d5747a
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Change-Id: I863fa73948f61aaffd7f4472f3abc3e44228e31f
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Send IuCS RAB Activation upon MNCC_CALL_PROC_REQ.
Implement function msc_call_assignment(): decide between sending A-iface BSSMAP
Assignment Request or IuCS RAB Assignment Request.
Implement iu_rab_act_cs() to send the IuCS RAB Assignment Request. The IP
address and port of the MGCPGW sent in the RAB Assignment are still hardcoded.
The A-interface extension is not implemented yet.
Declare ranap_new_msg_rab_assign_voice() to avoid including
ranap_msg_factory.h, which would require adding ASN1 CFLAGS to Makefile.am.
The mgcpgw_client as well as some more osmo-iuh functions are now linked from
libmsc, hence add some dummy stubs to libiudummy and db_test.c.
Change-Id: Iaae51d1fbbfc28fad1c0b85e161d53d80a420a19
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Store the mgcpgw client data in struct gsm_network.
Initialize VTY and bind the client.
Change-Id: Ifc4efb1ca44fa34c29bf23b35addb54155296d68
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Rename gsm48_cc_tx_call_proc() to gsm48_cc_tx_call_proc_and_assign() to mark
the place where the A-interface will send a BSSAP Assignment Request / where
the IuCS-interface will send a RAB Assignment Request.
Add function msc_call_assignment() to decide between A-iface and IuCS
assignment, to be implemented in subsequent commit.
Change-Id: I0695e233d57d13658793b0e63bb7c3ff224909a0
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Add libiu function to send a CommonID message down a UE connection,
iu_tx_common_id(); add also a corresponding stub to libiudummy for linking with
tests.
Add libmsc function msc_tx_common_id() to call the above. Add this mostly to
clearly indicate in msc_ifaces.h that libmsc is calling out of the MSC; also
to do conn->via_iface checking.
Call msc_tx_common_id() after ciphering is established, in
_gsm48_rx_mm_serv_req_sec_cb()'s GSM_SECURITY_SUCCEEDED case.
Change-Id: I576ddd5bbabfc989149debd2f8a9743db6d26043
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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.
In 3G, if a UE sends an Iu Release during LU (e.g. user enables flight mode),
we cancel the LU without sending any reply at all, so nothing would be counted.
Instead, count Location Updating results, i.e. completion and failures.
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Change-Id: I9cf80f9c2c8a53a29e42f000029e680a9922cb41
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By having conn->in_release == 1, calling msc_release_connection() has no
effect and thus never frees the conn. So, after all pending requests have
been discarded, also discard and free the unused connection.
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Change-Id: I398aaa4a7328a58fb0d563725f3bea26482929ef
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Change-Id: I624612b5d5cd70770326347634aee2a42ba88945
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This function is wrongly placed on the MSC level.
Unfortunately I cannot remember the very plausible details that hwelte had
back in the days to argue for this change. (Refactoring an old commit that
fails to explain in more detail.)
Change-Id: I82623847e652a59a921d2fb142b77cf22420a746
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Change-Id: I11be1bdfe6993f89b34319e7d1526c729d6e0cde
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Add paging timeout to struct gsm_subscriber. Previously, paging timeout was
implemented only on BSC level, where each request has its own timeout value.
The MSC will still send individual requests to BSC or RNC level, where they
timeout individually. However, the MSC must also have an own timeout to be sure
to discard stale pagings that the BSC or RNC never replied for.
Add handle_paging_resp(), copying the few libmsc relevant parts of
gsm48_handle_paging_resp().
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Before this, any paging response would be accepted by the CN, without
checking the database whether the subscriber is in fact authorized.
The probability that a subscriber would be able to take unauthorized action
is slim, nevertheless checking authorization status with the database should
happen before we accept a connection.
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Remove one layer of callback indirection in paging. When a paging response
arrives, we always want to first secure the connection, thus a fixed
subscr_rx_paging_response() function is more appropriate and avoids having
to store a cbfn. The actual actions to be taken upon successful paging are
of course still in callback functions stored with each subscriber.
Remove paging_request_stop() call from subscr_paging_dispatch(), which stops
paging on all BTSs, which is not the responsibility of libmsc.
Change-Id: Ic2c785c9cc48b2c2c6557cbe1060d25afa89e38d
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Change-Id: I44effcca80dc6850178174dc957bcd5608b0ae14
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Change-Id: Ife8e10b240693a8d369139881774f1892044aa65
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Change-Id: Idbbd39b0e068da17aafa97e315143509c69c50ea
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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.
Change-Id: I8b6920ddc54fc3f2876a59664e6722666d8a8a4a
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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 relatd to msc_gsm0808_tx_cipher_mode() in two places.
Change-Id: I5b276853d3af71f5e3f0a031fd17b4fff0580020
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Aim: msc_tx_dtap() shall redirect to IuCS or A interfaces depending on subscr
conn.
Change-Id: I30d961f16eb7b9c0ab9cc3f43198098d3f1a909f
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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
Change-Id: If24007445899e9c75553a0dbf843ada3566b3380
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Change-Id: I8f8980d6cfbf26f1b0e0197939833e55dbe521fb
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Change-Id: I88e981f4c31393a98ae8d61176c65c9251a6f28b
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