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2019-05-11gprs_gmm: send Service Reject when no PDP ctxs are available.efistokl2-0/+18
Look at PDP Context Status IE: if there are any PDP contexts which are ACTIVE on MS side and there are no PDP contexts which are ACTIVE on the network side, then send Service Reject with the cause "NO PDP ACTIVATED". This forces MS to reactivate the PDP contexts. 3GPP TS 24.008 Section 4.7.13.4 Service request procedure not accepted by the network. Cause # 40. Fixes: OS#3937 Change-Id: If610cbef17c25ec44e65d4f1b2340d102c560437
2019-02-26gbproxy_test: Fix test expectations of gprs_ns_rcvmsg()Harald Welte2-334/+340
gprs_ns_rcvmsg() in old libosmocore returns "number of bytes transmitted by any response PDU we sent as a result of the received message", while modern libosmocore simply retunrs '0' for any successfully received message. Let's make sure any non-negative responses lead to a reproducible test output with both old and new libosmocore. Change-Id: I7a48d14aed19825b87a02ccf9ee9cbfe0853342c
2018-12-11Use explicit parameter for sgsn_auth_init()Max1-1/+1
This is necessary to properly test ACLs in follow-up patches. Change-Id: Ibeba371234680f33ad35afbfffce9dca185228c1
2018-11-20update gbproxy test expected outputStefan Sperling1-38/+38
libosmocore commit 797558ea1768e464f9559c5f7a4f3f4285c5de25 changed the order of NS_UNBLOCK_ACK transmission dispatching of the NS_UNBLOCK signal. Update expected output of gbproxy tests accordingly to make these tests pass again. Change-Id: Ia3df811755b1c88cf7a27a466677b24a6c32fd8e Related: OS#2388
2018-11-15use enums consistently instead of falling back to intStefan Sperling1-5/+5
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
2018-10-30Remove local libgsupclient; Use libosmo-gsup-client from osmo-hlrHarald Welte2-13/+14
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
2018-10-30Update wrong references to bsc in sgsn codePau Espin Pedrol3-28/+28
Change-Id: I93f0dc721c2eff8a87fb9248882f24768f708713
2018-09-13gprs_gmm: introduce a GMM Attach Request FSMAlexander Couzens1-0/+1
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
2018-09-13tests: remove gmm unit testsAlexander Couzens2-836/+0
The test cases now implemented by TTCN3 which should not be as fragile as the unit tests. Because the unit tests expect a quite strong internal state to be happen. Change-Id: Iac1c8854b5ea4aa03279990390ebc110c979aac2
2018-08-15Drop gprs_msgb_copy with libosmocore replacementPau Espin Pedrol1-1/+1
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
2018-07-30migrate to oap_client in libosmogsmHarald Welte7-350/+0
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
2018-06-23finish gbproxy_parse_bssgp_unitdata testStefan Sperling1-5/+55
The message this test is trying to parse is indeed invalid. Add a comment showing the message in decoded form, and assert that the parser rejects it. Also, add a missing call to cleanup_test(). Change-Id: I2a86432d080c38d3c95626372a0129499d7146dd Related: OS#3178
2018-06-07add a test for OS#3178 (invalid unitdata message)Stefan Sperling1-0/+28
Add a test which reproduces the parsing problem. Whether this problem is due to an invalid message or a parser bug is yet to be determined. Until then, this test helps with analyzing the problem further. Change-Id: I39189701a57c785ffdacc3ae26d7aa93bb06cde6 Related: OS#3178
2018-05-01GERAN: allow GSM SRES on UMTS AKA challengeNeels Hofmeyr1-1/+1
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
2018-04-16use osmo_init_logging2(), fix regression test memleaksNeels Hofmeyr9-35/+90
Particularly gbproxy_test.c had various mem leaks, which (will) show up with gcc (Debian 7.3.0-15) 7.3.0 address sanitizer. Fix those leaks to verify that we don't have memleaks in the production code. Change-Id: Ia4204c8b3d895b42c103edecb61b99d3d22bd36f
2018-03-15implement support for 3-digit MNC with leading zerosNeels Hofmeyr2-25/+16
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
2018-02-21sgsn_test: guard against struct gprs_ra_id changingNeels Hofmeyr1-3/+3
sgsn_test initializes various struct gprs_ra_id without naming the actual members, which is vulnerable to struct member re-ordering. Name the members explicitly. An upcoming ABI change in libosmocore would cause test failures here without this patch. Change-Id: I517ed9edf77fac37d9de7a39df24c419a8a65d96
2018-02-08mandatory depend on libc-ares and libgtpAlexander Couzens3-18/+0
Both library are required to build osmo-sgsn. The optional dependency was correct when osmo-sgsn was part of openbsc. Change-Id: Id608165ae490cb6c84aac1fe70412b2cb2b2587b
2018-01-19Use gsm48_encode_ra() for RAI encodingMax1-7/+7
It has stricter type signature which increase the chance of spotting misuse either via compiler warning or with automated scan. This also paves the way for gsm48_construct_ra() deprecation in libosmocore. Change-Id: I2c0f082dc7214ed57a40dad0788e34b838dfac97 Related: OS#1640
2018-01-16fix build: missing LIBGTP_CFLAGS in sgsn_testNeels Hofmeyr1-0/+1
Change-Id: I250cadecaf90238df1afa6997e5d165fb9eee8b6
2018-01-07cosmetic: tests: sgsn_test: Use proper formatting and remove uneeded semicolonsPau Espin Pedrol1-6/+7
Change-Id: I144175b89f8058f6f8dedfa931c6768d9c43b70e
2018-01-07tests: sgsn_test: Define wrap APIs with correct parametersPau Espin Pedrol1-4/+8
Fixes following compilation warnings: osmo-sgsn/tests/sgsn/sgsn_test.c: In function ‘test_gmm_attach_subscr’: osmo-sgsn/tests/sgsn/sgsn_test.c:1110:30: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types] subscr_request_auth_info_cb = my_subscr_request_auth_info; ^ osmo-sgsn/tests/sgsn/sgsn_test.c: In function ‘test_gmm_attach_subscr_fake_auth’: osmo-sgsn/tests/sgsn/sgsn_test.c:1144:30: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types] subscr_request_auth_info_cb = my_subscr_request_auth_info_fake_auth; ^ osmo-sgsn/tests/sgsn/sgsn_test.c: In function ‘test_gmm_attach_subscr_gsup_auth’: osmo-sgsn/tests/sgsn/sgsn_test.c:1275:30: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types] subscr_request_auth_info_cb = my_subscr_request_auth_info_gsup_auth; ^ Change-Id: I5fcb3d460d8becb4cc917fc8d27bfc7e49d50b90
2017-12-27Migrate from OpenSSL to osmo_get_rand_id()Max6-26/+19
This avoids potential licensing incompatibility and makes integration of Debian packaging patches easier. The libosmocore version requirements are fine already but for jenkins tests to pass we have to have Ic77866ce65acf524b768882c751a4f9c0635740b merged into libosmocore master. Related: OS#1694 Change-Id: I2b687b7f07ef05bbd861b8479cad5a958a3dde92
2017-12-19Remove unneeded .py scriptsMax2-10/+2
The ipa.py has been moved to osmo-python-tests as osmo_ipa - use it for vty and ctrl tests instead of local copy. The soap.py and twisted_ipa.py are not SGSN-specific: leftovers from repository split which are now available in osmo-python-tests as well. Change-Id: I3ef4ca790878921a5846f64942a8de8a6ff9c11c
2017-11-28tests: Fix selection of python versionPau Espin Pedrol3-4/+4
According to documentation (and personal experience), AM_PATH_PYTHON selects the highest version of python, no matter if major version is different, which means if both python2 and 3 are available, 3 will be chosen an PYTHON will point to "/.../python" which is python3. Apparently, the macro cannot be easily used to pick highest python2 version. As {vty,ctrl}_test_runner.py require python2 and are incompatible with python3, let's instead rely on the system having a "python2" binary available, which is the case in most distros. Change-Id: If8e57924ed2c8da7ab7692f58a4bb5c5a970484f
2017-11-15tests/ctrl_test_runner.py: remove BSC/NAT TestRunnerAlexander Couzens1-371/+0
SGSN was splitted out of OpenBSC. Change-Id: Ie4e44e49e5c904929869b47fc4d608aab1aab75e
2017-10-25Fix build after recent rate_ctr patchesMax1-0/+248
It seems like recent changes expanded output of dump_rate_ctr_group(). Adjust output accordingly to fix the build. Change-Id: Icc9a53d35be2b0793d7ed25e6fec5bf6c8f84d92
2017-10-20SGSN: print additional GTP-related infoMax1-1/+1
* print libgtp version on startup * print GSN addresses in 'sh sgsn' Change-Id: I699a9eb56c4b362984ea8292a3d2b22b71f53c15 Related: SYS#3610
2017-10-20SGSN: uncomment BSSGP vty testsMax1-4/+2
Change-Id: I9181fc0ecd91e96bf6532aa89b811552009a1b7d
2017-10-02Cleanup configure checksMax1-4/+0
* remove unused sqlite3 check * remove unused NAT/SMPP/BSC/MGCP test checks Change-Id: I83ae896f57cfb4cb139a42fbf3d77d4b11313f65
2017-09-06move include/openbsc to include/osmocom/sgsnNeels Hofmeyr9-29/+29
Change-Id: I281ef585fffc2644682c8282224fb1c2da5ca795
2017-08-30split off osmo-sgsn: remove files, apply build1.1.0Neels Hofmeyr87-23181/+7
Change-Id: I5d27ff93e56cd13e0e70edd15e2080201e35e91f
2017-08-30msc_vlr tests: add IMEISV testsNeels Hofmeyr6-48/+1324
Change-Id: I752afef2ae3ce04e813c7e9fea0e883e607c0e14
2017-08-30move to osmo-mgw.git: osmo-bsc_mgcp and libmgcp as libosmo-legacy-mgcpNeels Hofmeyr16-3277/+19
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
2017-08-30cosmetic: msc_vlr_tests: drop unused varNeels Hofmeyr1-1/+0
Change-Id: I584c0dfffe005597563dbd72fad8a087c554ba3d
2017-08-30move libiu to osmo-iuh/libosmo-ranapNeels Hofmeyr4-33/+23
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
2017-08-30Implement AoIP, port to M3UA SIGTRAN (large addition and refactoring)Philipp Maier21-19/+433
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
2017-08-27sgsn_test: Fix wrong definition of wrap funcPau Espin Pedrol1-5/+5
Commit 058cd573d8 added 2 new pointer parameters to gprs_subscr_request_auth_info, but forgot to update wraps of the function in sgsn_test. I catched this today because openbsc build test sgsn_test was failing. Closed look up to the logs showed: Assert failed (auts != NULL) == (auts_rand != NULL) openbsc/openbsc/src/gprs/gprs_subscriber.c:791 Change-Id: Ie9e4af6da0339536fb20ca0b7bbcf6f485bd522c
2017-08-27Migrate from gprs_apn_to_str() to libosmocore osmo_apn_to_str()Harald Welte2-96/+2
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
2017-08-27libcommon: Fix log output for bts>0.Alexander Chemeris3-5/+36
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
2017-08-27libmsc: update database to accomodate SMS status-report fieldsPablo Neira Ayuso1-0/+1
SMPP DELIVER_SM messages with esm_class = Delivery Receipt need to send this message reference (that the mobile phone allocates) to the ESME. Thus, the ESME propagates it via SUBMIT_SM with esm_class = Delivery Acknoledgment so that the SMSC sends the GSM 03.40 status-report to the origin including this. Given this field is useful for status-reports, we need to store it in the HLR database. Moreover, we need a new field that specifies if the entry represents a SMS status-report, to do the right handling from the gsm411_send_sms() - such new handling comes in a follow up patch entitled "libmsc: handle delivery ack via SMPP SUBMIT SM / send GSM 03.40 status report". This patch includes the migration routines to the new database schema revision 5, it's quite a bit of dbi boilerplate code - copied-pasted and adapted. Change-Id: I7276d356d805a83ebeec72b02c8563b7135ea0b6
2017-08-27examples/sgsn: Use osmo-hlr with auth-policy remote by defaultDaniel Willmann1-1/+1
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
2017-08-2704.08: log protocol discriminators and message types by nameNeels Hofmeyr10-901/+915
On incoming 04.08 messages, we log only the protocol discriminator in decimal. Enhance: log pdisc and message type in hex, and also log the protocol and message type as human readable string. Also adjust the msc_vlr tests' log statements for wrapped rx/tx functions of dtap from/to the MS. Adjust the expected output of msc_vlr_tests. Change-Id: Ida205d217e304337d816b14fd15e2ee435e7397d Depends: libosmocore change-id I0fca8e95ed5c2148b1a7440eff3fc9c7583898df
2017-08-27fix msc_vlr tests after libosmocore uses localtime for SMSNeels Hofmeyr1-2/+2
libosmocore change-id I4efdb1eaae43aced33961b64d4f14b0040321c10 changes the gsm340_gen_scts() from gmtime to localtime, meaning that by feeding a mere zero as timestamp, we get different results depending on the local machine's timezone setting. Instead of calling gsm340_gen_scts() with zero, simply write a bunch of bytes as time so that the tests get identical SMS bytes every time. Change-Id: I8a50e8963dce80609749571b61fc6ffe1c54660c
2017-08-27Implement IuCS (large refactoring and addition)Neels Hofmeyr25-1509/+2192
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
2017-08-27mscsplit: various preparations to separate MSC from BSCNeels Hofmeyr11-72/+36
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
2017-08-27vlr: LU FSM: enable Retrieve_IMEISV_If_RequiredNeels Hofmeyr11-50/+51
Change-Id: I121b95ad6d5ecb7603815eece2b43008de487a8a
2017-08-27osmo-nitb: change default db name to sms.dbNeels Hofmeyr1-1/+1
libvlr now delegates subscriber management to osmo-hlr, so the database no longer represents a HLR. It basically only stores SMS, so reflect that fact in the default database name. Change-Id: I3289d68d3eb63aff940b48a25b584d5e83cd0197
2017-08-27Add msc_vlr test suite for MSC+VLR end-to-end testsNeels Hofmeyr32-0/+14774
Change-Id: If0e7cf20b9d1eac12126955b2f5f02bd8f1192cd
2017-08-27Use libvlr in libmsc (large refactoring)Harald Welte18-839/+400
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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