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The two existing enums defined in gprs_sndcp_xid.h, for protocol
and data compression algorithm numbers respectively, were assigned
to 'int' variables when their values were copied to other structures.
This prevented the compiler from checking the enum value coverage
during switch statements and also tripped up Coverity scans looking
for enum value mismatch problems.
So instead of copying enums to ints, make use of the enums throughout.
Structures which can contain values from both enums now use a union
of both, forcing us to be very explicit about which set of values
we are dealing with.
Change-Id: I3771a5c59f4e6fee24083b3c914965baf192cbd7
Depends: If6f3598cd6da4643ff2214e21c0d21f6eff0eb67
Depends: I8444c1ed052707c76a979fb06cb018ac678defa7
Related: CID#149102
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osmo-hlr has recently (as of Change-Id
Iad227bb477d64da30dd6bfbbe1bd0c0a55be9474) a working shared library
implementation of libosmo-gsup-client.
We can remove the local implementation in osmo-sgsn and use the
system-installed shared library instead.
Change-Id: I6f542945403cf2e3ddac419186b09ec0e2d43b69
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Change-Id: I4a83c5799f0dbd5eb762039c6cfba671f6e465be
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Introduce a new FSM step in GMM Attach to send the
Security Command to the RNC after completing the
Authentication.
Fixes: f7198d7dbb84 ("gprs_gmm: introduce a GMM Attach Request FSM")
Change-Id: I1e12b0a32e58c6f78dba7b548f7d7016567229db
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Move the check of the echo timer into an own function.
The gtp echo timer must be re-check everytime the
echo-timer has been modified or deactivated via vty.
Fixes the TTCN3 SGSN_Tests.TC_attach_restart_ctr_echo
Change-Id: Ia33471a9a9cfc3887facb665c82094b99932052a
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The GMM ctx->gmm_att_req.auth_reattempt is used to track
multiple UTMS re-sync attempt of a MS.
Change-Id: I708226cec9e131dcda4234f42ed3689f4f6750e8
Fixes: f7198d7dbb84 ("gprs_gmm: introduce a GMM Attach Request FSM")
Fixes: OS#3556
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The old GMM Attach Request handling used a recursive function
which can not handle certain states and is quite complex and hard to
extend.
The new FSM handles such request in a FSM and can be called multiple
times.
Change-Id: I58b9c17be9776a03bb2a5b21e99135cfefc8c912
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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: Icdf7af7a31fbba9197b3711eaf102fc0ae333bcc
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This timer allows periodically cleaning up stale links in link-list of
each gbproxy_peer. Previous to this patch, this kind of cleanup
(gbproxy_remove_stale_link_infos) was being done only as a consequence
of external events being triggered, such as a message from that peer
being received.
It was found in a production network agreggating several BSS that some
of them were offline for a longtime but gbproxy was still caching big
amounts of really old link_info for the NSEI assigned to those BSS,
because since they were probably turned off abruptely, no new messages
were received from it which would trigger the cleanup.
As a consequence, it has been observed that a timer to periodically
clean up old entries (link-list max-age) is requird in case w don't
receive messages from that NSEI periodically.
Related: SYS#4431
Change-Id: Ic777016f6d4f0e30fb736484774ca46878f17b7a
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It was discovered in some prod setups that some TLLIs can maintain quite
long queues of msgb in case its IMSI is not acquired and the tlli is not
pruned due to link-list max-{age,length} being set to 0. As a result,
the osmo-gpbroxy steadly increases the list size of maintained TLLIs, and
some TLLI was found without IMSI catching already 1211 msgb.
Let's allow setting a maxiumum length for the queue storing those msgb
in a per TLLI base. If the limit is reached, oldest msgb are removed
before adding a new one.
Depends: libosmocore Change-Id I33b501e89a8f29e4aa121696bcbb13d4b83db40f
Related: SYS#4297
Change-Id: I4473be8604f80302df03ffdd5a13280dc072f824
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gprs_msgb_resize_area was introduced in libosmocore 0.94
(f78ec5ce0d0f6038147d9b9e14d81094309ba5d5) as msgb_resize_area. Let's use
that one to avoid code duplication.
Change-Id: Ib80f7b2b186d87f21d63d9b0bec58175170c905c
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gprs_msgb_copy was introduced in libosmocore 0.94
(f78ec5ce0d0f6038147d9b9e14d81094309ba5d5) as bssgp_msgb_copy. Let's use
that one to avoid code duplication.
Change-Id: I42a65fd8e4045fafadf5694f2d8d0c5e7ab350a0
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libosmogsm in libosmocore.git from Change-Id
Ie36729996abd30b84d1c30a09f62ebc6a9794950 onwards contains oap_client.c,
so we don't need our local copy here in this repo anymore.
Change-Id: I7b194f98ef3f925b6178d8a8dbd9fcf2f0c6e132
Requires: libosmocore.git Change-Id Ie36729996abd30b84d1c30a09f62ebc6a9794950
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When PDP CTX CREATE ACK is received with an increased RestartCtr, cb_recovery2
is called first, which will dettach ggsn from al pdp ctx (free the
pdp_t). But when giving control back from the ctrl, libgtp still uses
that freed ctx and sends it back to osmo-sgsn through cb_conf().
As specs state in any case that we need to handle the message containing
the increased RestartCtr as valid, we then need to avoid freeing the pdp
ctx and leave handling for later in cb_conf.
Depends: osmo-ggsn (libgtp) Change-Id I53e92298f2f6b84d662a3300d922e8c2ccb178bc.
Change-Id: I0989c00e18ca95a099e1a312940eaac71957b444
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This commit fixes TTCN3 sgsn test TC_attach_pdp_act_user_deact_mt.
Change-Id: I204209c017aac8a8402cbb8d0a0200540abcc954
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According to 3GPP TS 24.008 Section 6.1.3.4, the tear down indicator IE
maybe included in the DEACTIVATE PDP CONTEXT REQUEST message in order
to indicate whether only the PDP context associated with this specific
TI or all active PDP contexts sharing the same PDP address and APN as
the PDP context associated with this specific TI shall be deactivated.
As we don't permit/support establishing multiple PDP contexts using
the same APN and PDP address, it shouldn't really make any difference.
Nevertheless, we want to clear everything, so let's include it.
Change-Id: Ia9bc2d0e93362a8473eac5cf4c7e8ffa41c79e5b
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In sgsn_pdp_ctx_terminate, a pdp ctx is terminated and the mm ctx is
detached. However, T3395 may still be armed and then pdpctx_timer_cb
will trigger, and attempt to use the pdp->mm ctx which was already
detached (set to NULL) when calling
gsm48_tx_gsm_deact_pdp_req()->mmctx2msgid().
Following list of log lines shows the scenario+crash, in which osmo-sgsn
is trying to deactivate the ctx all the time but the PCU doesn't ACK it,
and then at some point the PDP context is forced released.
osmo-sgsn/src/gprs/gprs_gmm.c:2294 MM(901700000015254/d7e9ab95) <- DEACTIVATE PDP CONTEXT REQ
osmo-sgsn/src/gprs/gprs_gmm.c:1464 MM(901700000015254/d7e9ab95) -> GMM DETACH REQUEST TLLI=0xd7e9ab95 type=GPRS detach Power-off
osmo-sgsn/src/gprs/gprs_gmm.c:313 MM(901700000015254/d7e9ab95) Cleaning MM context due to GPRS DETACH REQUEST
osmo-sgsn/src/gprs/gprs_sgsn.c:332 MM(901700000015254/d7e9ab95) Dropping PDP context for NSAPI=5
osmo-sgsn/src/gprs/gprs_sgsn.c:434 PDP(901700000015254/0) Forcing release of PDP context
osmo-sgsn/src/gprs/gprs_sndcp.c:508 SNSM-DEACTIVATE.ind (lle=0x62100001bca0, TLLI=d7e9ab95, SAPI=3, NSAPI=5)
osmo-sgsn/src/gprs/sgsn_libgtp.c:310 PDP(---/0) Delete PDP Context
osmo-sgsn/src/gprs/gprs_gmm.c:2294 MM(---/ffffffff) <- DEACTIVATE PDP CONTEXT REQ
osmo-sgsn/src/gprs/gprs_gmm.c:305:25: runtime error: member access within null pointer of type 'const struct sgsn_mm_ctx'
Program received signal SIGSEGV, Segmentation fault.
0x0000555555698c1b in mmctx2msgid (msg=0x61d0000172e0, mm=0x0)
at /home/pespin/dev/sysmocom/git/osmo-sgsn/src/gprs/gprs_gmm.c:305
305 msgb_tlli(msg) = mm->gb.tlli;
(gdb) bt
#0 0x0000555555698c1b in mmctx2msgid (msg=0x61d0000172e0, mm=0x0)
at osmo-sgsn/src/gprs/gprs_gmm.c:305
#1 0x00005555556b170a in _gsm48_tx_gsm_deact_pdp_req (mm=0x0, tid=0 '\000',
sm_cause=38 '&')
at osmo-sgsn/src/gprs/gprs_gmm.c:2297
#2 0x00005555556b1a2e in gsm48_tx_gsm_deact_pdp_req (pdp=0x6140000008a0,
sm_cause=38 '&')
at osmo-sgsn/src/gprs/gprs_gmm.c:2311
#3 0x00005555556b876c in pdpctx_timer_cb (_pdp=0x6140000008a0)
at osmo-sgsn/src/gprs/gprs_gmm.c:2717
#4 0x00007ffff355eb3e in osmo_timers_update ()
at libosmocore/src/timer.c:257
#5 0x00007ffff356255c in osmo_select_main (polling=0)
at libosmocore/src/select.c:254
#6 0x00005555556f17cb in main (argc=3, argv=0x7fffffffe298)
at osmo-sgsn/src/gprs/sgsn_main.c:531
Change-Id: I2120e53ade6cabad37f9bd99e6680a453411821b
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Before this commit, echo req/rsp logic was implemented in libgtp but
never used in osmo-sgsn.
This commit adds a timer which periodically sends a GTP ECHO Request to
every GGSN if there's at least one pdpd context associated with it. This
way by checking the restart counter in the ECHO Reply it can be known if
the GGSN was restarted. In this case, logic already present in osmo-sgsn
will terminate all pdp contexts associated with that GGSN.
Change-Id: I9d714726785407859f26bbef052cd0efc28e8dae
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This way we can easily track all pdp context associated to a specific
ggsn, which is useful to handle some scenarios, such as the one
implemented in next commit, in which specs references that GSNs should
ping only other GSNs with at least one pdp ctx in common. So the list
of pdp ctx per GGSN is really useful too (and cheap computationally)
to check if we should arm or disarm the echo procedure timer.
So this commit can be seen as a preparation for next commit.
Change-Id: I3bbcc0883df2bf1290ba8d4bd70db8baa494087a
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Change-Id: I1c023d773bf196d41b4251ca7011a82969acb613
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Change-Id: Iffae03fd855e6cbd99e71b9ba0d4157cb7791db2
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This patch adds a control interface to osmo-gbproxy as well as the first
two commands to query the state of each NSVC and gbproxy peer.
The "nsvc-state" command replies with
nsei, nsvci, local state, role, remote state of all NSVCs.
The "gbproxy-state" command replies with
nsei, bvci, mcc, mnc, lac, rac, and state of each peer.
Entries are separated by a newline '\n' character. If there are no
entries an empty list is returned. This behaviour is similar to that of
the subscriber-list-active-v1 command in osmo-sgsn.
$ ./osmo_ctrl.py -d 127.0.0.1 -p 4263 -g nsvc-state
Got message: b'GET_REPLY 23 nsvc-state 101,101,DEAD,BLOCKED,SGSN,DEAD,UNBLOCKED\n'
$ ./osmo_ctrl.py -d 127.0.0.1 -p 4263 -g gbproxy-state
Got message: b'GET_REPLY 4871085901306801158 gbproxy-state '
Change-Id: I82c74fd0bfcb9ba4ec3619d9fdaa0cae201b3177
Ticket: OS#3281, SYS#4235
Sponsored-by: On-Waves ehf
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Change-Id: I54168e1a58dd36b38c53c13bbb5cdb4311f34410
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GMM Attach Request will be handled in it's own file and will
use those functions.
Change-Id: Ic90d77f7b0bacd2a8e2e409e82d676772d352749
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Store the established security context type (GSM or UMTS) instead of the
boolean flag is_authenticated. Provide the previous boolean query with thin
sgsn_mm_ctx_is_authenticated() function.
Knowing which security context was established will be necessary for OS#3224,
i.e. using the proper ciphering key, which is not yet tested properly, and
probably not correct at this stage.
This change will make new SGSN_Tests.TC_attach_umts_aka_gsm_sres pass.
Related: OS#3193 OS#3224
Change-Id: I36807bad3bc55c0030d4f09cb2c369714f24bec7
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Use the proper enum ranap_nsap_addr_enc instead of int, and properly exclude
that member when we're building without Iu support:
sgsn_vty.c:1323:31: error: passing argument 2 of ‘ranap_iu_vty_init’ from incompatible pointer type [-Werror=incompatible-pointer-types]
ranap_iu_vty_init(SGSN_NODE, &g_cfg->iu.rab_assign_addr_enc);
Add const to a local var to silence compiler warning retrieving TLVP_VAL:
gprs_gmm.c:1657:18: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
uint8_t *mi = TLVP_VAL(&tp, GSM48_IE_GMM_ALLOC_PTMSI);
^~~~~~~~
Change-Id: I1168ce6425c31db3f6c3bf1f3682ae96b028c59b
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Add 3-digit flags and use the new RAI and LAI API from libosmocore throughout
the code base to be able to handle an MNC < 100 that has three digits (leading
zeros).
Note that in gbproxy_test.ok, 0-0 changes to 000-000 instead of 000-00, because
the parsed ra buffer is 000000 which results in 000-000, while 00f000 would
result in 000-00. IOW this is expected.
Change-Id: I7437dfaa586689e2bef0d4be6537e5577a8f6c26
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Default behavior is to have them disabled, and can be explicitly
disabled too by using 'no cdr trap' cmd.
Tested with osmo_ctrl.py that messages are send successfully:
TRAP 0 cdr-v1 20171129125950222,901700000015254,357737055592090,555,0,5,,pdp-periodic,2731,127.0.0.2,127.0.0.1,internet,176.16.222.3,20793,10045,1
Related: OS#2360
Change-Id: I1d144d87effd934d991257a65e19cf046a938907
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* make gtp_ntoa() public after renaming it to sgsn_gtp_ntoa() to avoid
confusion with libgtp functions
* use it to log GTP-U endpoints address updates
Change-Id: I96d0f3a63cce338471cc39cc33fd44c39cd2aa73
Related: SYS#3610
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The issue was uncovered by lintian while checking .deb packaging.
Change-Id: Idfe0e3d61f2604521647e9ef5ffb984db96aabbe
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This header is unused anyway.
Change-Id: Ic34f7d3e8f813e020d43be312df940c933bc52b7
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Change-Id: I281ef585fffc2644682c8282224fb1c2da5ca795
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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-sgsn.
Change-Id: Ie9dc7514c3850010d0e9b3ab716b4f4e8d83594f
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Change-Id: I5d27ff93e56cd13e0e70edd15e2080201e35e91f
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Rewire build and includes to libosmo-legacy-mgcp.
Drop osmo-bsc_mgcp and related python tests, now found in osmo-mgw.git.
libosmo-legacy-mgcp is installed from osmo-mgw, hence add the dependency to
jenkins.sh (so far using the pre_release branch).
Change-Id: Ic99d681759edce11564da62500c2aac5cf5fffe2
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Remove libiu here, use the functions from libosmo-ranap instead, by applying
the ranap_ / RANAP_ prefix.
Corresponding change-id in osmo-iuh.git is I6a3f7ad15be03fb94689b4af6ccfa828c25f45c0
To be able to run the msc_vlr tests for RAN_UTRAN_IU without Iu client headers
available, add iu_dummy.h, containing mere function signatures that match
iu_dummy.c and a mostly empty struct ranap_ue_conn_ctx.
Make sure we can build with and without --enable-iu: include osmo-iuh headers
only with --enable-iu.
Change-Id: Ib8c4fcdb4766c5e575618b95ce16dce51063206b
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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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Set the time on the status report to the time the message was delivered, as
this may not be the same as the time when we are delivering the report to the
originating MS.
Change-Id: I9056429d40bf02731f004b7833f1de45a0d1add8
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In 2015, Jacob moved/copied related functions to libosmocore, but
for some reason didn't remove the copies here. Let's follow-up on
that and remove duplicated code.
The libosmocore commit introducing osmo_apn_to_str() was
8114294bf29ac6e44822c0ae43d4b0819f11b022
Change-Id: I7315ffcbed8a54cca2056f313bb7783ad82d0ee9
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Change-Id: Icb1e7cb15fe04642578f5292124ebc1eac9c9aa3
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Fixes regression probably introduced in c696cc28.
For bts>0 logging doesn't show bts number correctly when printing lchan
identification string - it will always show it as "bts=0". The reason for
this is that the identification string is cached before bts->nr value is
set to a proper value.
This patch sets bts->nr as part of the first step of the bts structure
initialization, before caching happens thus making sure the cached
identification string is cached with the correct values.
Change-Id: I61c18a7f021fcb1ec00d34a745f4e3ab03416c2d
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If the mobile phone requests a status report via SMS, send a DELIVER_SM
with esm_class = Delivery Receipt to ESME to indicate that the SMS has
been already delivered to its destination.
MS GSM 03.40 SMSC SMPP 3.4 ESME
| | |
| SMS-DELIVER | |
|<----------------------------| |
| GSM 04.11 RP-ACK | |
|---------------------------->| |
| | DELIVER-SM |
| | esm_class = Delivery Receipt |
| |------------------------------->|
| | DELIVER-SM-RESP |
| |<-------------------------------|
| | |
This patch implements "Appendix B. Delivery Receipt Format" as specified
in the SMPP 3.4 specs. This string is conveyed in the SMS message as
data, and it is only meaningful to the ESME, for logging purposes. The
"submit date" and "done date" are not yet set, and other fields are just
sent with dummy values, so they are left to be finished as future work.
The new SMPP TLV tag TLVID_user_message_reference is added to the SMPP
messages inconditionally now since this information is required by
delivery-reports to associate the status-report with the original SMS.
Change-Id: Ic1a9023074bfa938099377980b6aff9b262fab2a
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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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Change-Id: Ib27edbfc8ccdedf00589ec715ced7bed435fa94c
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For some GGSNs we need to insert the PDP Charging Characteristics
that were returned. We receive these values from GSUP and will
fill them into the tlv structure when finding the ggsn context.
Change-Id: I1725bfd2403d29ce3550bfcd6fcc1498426ef906
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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.
Related: OS#2459
Change-Id: I5eff04dcb0936e21690e427ae5e49228cd459bd4
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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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In an upcoming commit, sgsn_vty_init() will require access to the global sgsn
config struct to initialize a generic VTY command with the proper config
destination address, see Change-Id I5b5b6a9678b458affa86800afb1ec726e66eed88.
Change-Id: Ie6b6e5422987586531a898e0c5b867623dbecb0f
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Disable large parts of the code that depend on BSC presence. The code sections
disabled by #if BEFORE_MSCSPLIT shall be modified or dropped in the course of
adding the A-interface.
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.
Remove internal RTP streaming code; OsmoNITB supported that, but for OsmoMSC,
this will be done with an external MGCP gateway.
Remove LCHAN_MODIFY from internal MNCC state machine.
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.
Employ fake paging shims in order for msc_vlr_tests to still work.
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
gsm_subscriber_connection: put the LAC here, so that it is available without
accessing conn->bts. In bsc_api.c, place this lac in conn for the sake of
transition: Iu and A will use this new field to pass the LAC around, but in a
completely separate OsmoBSC this is not actually needed. It can be removed
again from osmo-bsc.git when the time has come.
Siemens MRPCI: completely drop sending the MRPCI messages for now, they shall
be added in osmo-bsc once the A-Interface code has settled. See OS#2389.
Related: OS#1845 OS#2257 OS#2389
Change-Id: Id3705236350d5f69e447046b0a764bbabc3d493c
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Change-Id: I121b95ad6d5ecb7603815eece2b43008de487a8a
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