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2019-11-28Clarify (M)CS related VTY attributesPau Espin Pedrol1-4/+7
Some are used to control (M)CS values for downlink while some do it for uplink. Let's make clear which one is used for what. Take the chance to document the fields a bit better than they were. Some more information about the origin of cs_downgrade_threshold can be found in the commit introducing it: 70b96aa232bd9784a94247bf7b193cb2147ada9d. Related: OS#4286 Change-Id: I4e890e924b094a1937fbd3794de96704cf0421a8
2019-11-23PTCCH: properly handle RACH.ind for PCU_IF_SAPI_PTCCHVadim Yanitskiy1-0/+1
Change-Id: I482d60a46b9d253dfe0b16140eac9fea6420b30c Related: OS#1545
2019-10-01Log AGCH and PCH blocks using GSMTAPPau Espin Pedrol1-0/+2
Change-Id: I4d62f98801af1b0a290d3dd35bd213ccf3151035
2019-09-30Log RACH Requests using GSMTAPPau Espin Pedrol1-0/+1
Change-Id: Ib686a49e8c630808c30bede5810cd65fc045954a
2019-09-17Use osmo_tdef to implement dl-tbf-idle-timePau Espin Pedrol1-1/+0
Change-Id: I5e4f0d2f90e643600b7752525d6c2830856c9d3b
2019-09-17Use osmo_tdef to implement ms-idle-timePau Espin Pedrol1-1/+0
This commit would also remove the option from config_write_pcu() since it's automatically filled in by osmo_tdef, but there was actually a bug because that param was never printed when saving the config... Change-Id: Id8e70b0f44ef2f7e20ecdb3fd8ca93ae2a05b9a3
2019-09-16Use osmo_tdef to implement T3190Pau Espin Pedrol1-4/+0
Change-Id: I0c767c526398d98ca47ef98fdaccfc23af11fb0d
2019-09-14Forward ETWS Primary Notification to MSOliver Smith1-0/+5
Receive an Application Information Request from the BTS via PCU interface. Construct a Packet Application Information message from it (3GPP TS 44.060 11.2.47) and send it to all MS with active TBF. The TTCN-3 test infrastructure to test this feature is not quite ready yet, so I've added C unit tests instead. Related: OS#4048 Change-Id: Ie35959f833f46bde5f2126314b6f96763f863b36
2019-09-12Introduce osmo_tdef infra and timer VTY commandsPau Espin Pedrol1-5/+4
This will allow for configuration of some of the timers by the user, and allow him to inspect current values being used. It will be also useful for TTCN3 tests which may want to test some of the timers without having to wait for lots of time. Timers are splitted into 2 groups: BTS controlled ones and PCU controlled ones. The BTS controlled ones are read-only by the user (hence no "timer" VTY command is provided to change them). TbfTest.err output changes due to timers being set up correctly as a consequence of changes. Other application such as pcu_emu.cpp and pcu_main.cpp had to previosuly set the initial values by hand (and did so), but apparently TbfTest.c was missing that part, which is now fixed for free. Depends: libosmocore.git Id56a1226d724a374f04231df85fe5b49ffd2c43c Change-Id: I5cfb9ef01706124be262d4536617b9edb4601dd5
2019-09-11tbf_dl: make preemptive retransmission optionalOliver Smith1-0/+1
Since [1], OsmoPCU already starts to retransmit downlink blocks before the MS has had a chance to receive them and/or send the related acknowledgement in uplink. Make this optional with the new VTY option "no dl-tbf-preemptive-retransmission". [1] e25b5b91f60f20f61096bc6199a05b58ee6c6328 ("tbf: Only create dummy frames if necessary") Related: OS#2408 Change-Id: Id08aed513d4033aa0d4324c6ce07cbb2852f2f92
2019-03-26Include pdch.h in bts.h even if we're not compiling C++Daniel Willmann1-1/+1
bts.h needs pdch.h whether we're compiling C or C++ code so move it out of the #ifdef. make[1]: Entering directory '/home/daniel/scm/osmo/oc2g/osmo-pcu-oc2g/src' CC osmo-bts-oc2g/oc2g_l1_if.o In file included from osmo-bts-oc2g/oc2g_l1_if.c:39: ./bts.h:74:26: error: array type has incomplete element type ‘struct gprs_rlcmac_pdch’ struct gprs_rlcmac_pdch pdch[8]; ^~~~ Change-Id: Ib39e4424f73c677b34f921917440f211e400e14f
2019-03-19Explicitly clean up BTS singletonMax1-0/+2
Add method to explicitly cleanup BTS singleton similar to GprsMsStorage class and use it from main(). The destructor becomes trivial wrapper around cleanup() method. This prevents annoying SIGABRT on exit of OsmoPCU caused by rate_ctr_group_free() being called after talloc_free() which removes the context in which counter group is allocated. Change-Id: I796d56a7de3f3a1f9d59708995c8e3e9b05a2747
2019-03-06Tighten lqual table limits checkMax1-2/+4
Previously MAX_GPRS_CS was used for both EDGE and GPRS which means that we waste extra memory in GPRS case. It also leads to misleading name. Let's fix this by introducing separate definitions for GPRS and EDGE cases and use them as appropriate in limit checks. Change-Id: I3ae1ee64ec8e80247b8fe669cc79505b4dadf58f
2019-02-26Optionally Use the NS Sub-Network-Service (SNS) on GbHarald Welte1-0/+3
This change add support for the recently-introduced GPRS Gb interface auto-configuration using the NS IP Sub-Network Service (SNS) procedures. It requires a Change-Id I84786c3b43a8ae34ef3b3ba84b33c90042d234ea of libosmocore. Related: OS#3372 Depends: I84786c3b43a8ae34ef3b3ba84b33c90042d234ea (libosmcore) Change-Id: I256b40ac592d3b6e75dd581bf7b9512f69b11e83
2019-02-19Clarify write_immediate_assignment() signatureMax1-1/+1
* remove unused variable * use bool for boolean types * add clarification comments Change-Id: I363445063e2d873d9194b2a5924b9e59b8b7ea53
2018-02-20Simplify TS alloc: don't use PDCH for free TFIMax1-1/+1
Don't use PDCH from free TFI lookup routine. This allows for simpler function which can be moved to mslot_class.c alongside with other similar helpers. Change-Id: Ie154866900453d232a890f7b9a30911b451525a1 Related: OS#2282
2018-02-19Move PDCH-related functions into separate filesMax1-120/+1
The PDCH class and corresponding functions are rather self-contained and independent from BTS implementation. Let's move them into separate file to make bts.cpp more manageable. As additional benefit it allow us to somewhat untangle all the different cross-dependent includes. Change-Id: Ie05e25361e6741a81b024679f9675c98d4923683 Related: OS#1539
2018-02-19Update header includesMax1-2/+2
Many files include unnecessary headers and don't include headers which are actually used. Because of that combined with the fact that OsmoPCU is a mixture of C and C++, it makes it hard to modularize code. Fix this (using iwyu [1] tool): * add missing headers * remove unused headers [1] https://include-what-you-use.org/ Related: OS#1539 Change-Id: I8c9f488a43b099c72b2d30d3245e7ba50872fc00
2018-02-19Move paging generation into PDCHMax1-1/+1
Previously paging was prepared inside BTS function and than handed over to PDCH function. Move the actual preparation into PDCH to better decouple PDCH from BTS. Related: OS#1539 Change-Id: I389fb16b6e54040770c21f88edbcb8e045636928
2018-02-14Make osmo-pcu wait for BTS to become available at start-up time.Stefan Sperling1-0/+1
After the PCU socket becomes available, the BTS might send an INFO_IND message with the 'ACTIVE' flag cleared. If this happens, do not exit immediately, but keep retrying until an INFO_IND message with the 'ACTIVE' flag arrives. Note that this change only affects behaviour at process start-up time. If the BTS switches from active to inactive state then osmo-pcu will still exit. If this behaviour should be changed as well it could be done in a follow-up patch. Tested against osom-bsc + osmo-bts-virtual. Change-Id: Ic42a5601a43b81d260721fef5d9fa52447f9d309 Related: OS#2689
2018-01-26Simplify TS alloc: adjust function signaturesMax1-1/+1
* document used parameters and return values * use consistent formatting * constify function parameters where appropriate (adjusting parameter types if necessary) Change-Id: I211b10b4da59c73d509b719346774515c761886a Related: OS#2282
2018-01-26Simplify TS alloc: use defines for constantsMax1-0/+1
* define and use constant for occupied TFI instead copying the same magic number all over the place * use libosmocore's define for bit pretty-printer Change-Id: I2699ceebf0cbec01652a02fa68ccc9e9419d0293 Related: OS#2282
2018-01-26Simplify TS alloc: adjust allocator signaturesMax1-5/+3
* drop unused parameters (from both functions and structs) * document used parameters and return values * tighten types used for parameters * use consistent formatting Tests are adjusted accordingly but test results are left untouched to avoid regressions. Change-Id: I39d81ab64ff790b9c4c2d0312a574485cd83e755 Related: OS#2282
2018-01-12Clarify RACH-related interfacesMax1-3/+1
* make is_11bit parameter into bool * remove is_single_block() from public interface and mark it as static * move logging outside of if ladder * move side-effects from is_single_block() into separate static functions * simplify UL-TBF allocation in case of 11-bit RACH This immediately makes it obvious that priority is never actually used despite being computed - seems like a leftover from merge of incomplete patch series. Change-Id: If189b7166a29a87ffb17a7a9bc560f674851fd53 Related: OS#1548
2017-12-01Fix compiler warningMax1-2/+0
Move function declarations which use gprs_rlcmac_ul_tbf into tbf.h to avoid compiler warning: In file included from pcu_vty.c:15:0: bts.h:166:27: warning: ‘struct gprs_rlcmac_ul_tbf’ declared inside parameter list will not be visible outside of this definition or declaration void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta); ^~~~~~~~~~~~~~~~~~ bts.h:167:24: warning: ‘struct gprs_rlcmac_ul_tbf’ declared inside parameter list will not be visible outside of this definition or declaration void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta); ^~~~~~~~~~~~~~~~~~ Change-Id: Ic34c72c8bff6d7c775f56bb6026fec5425f7dcb4
2017-11-16PCU: Fix TA adjustmentMinh-Quang Nguyen1-2/+3
Promblem: TA provided from L1 PH-DATA-IND is a relative amount of TA adjustment to actual TA being used for given TBF. The current TA update algorithm in PCU simply applies the relative amount of TA to given TBF but does not take into account of current TA. As a result, the PCU will request wrong TA jump for given TBF if the MS is moving away from BTS more than 2 km. Related issue: http://osmocom.org/issues/2611 Fixes: - The PCU needs increase or decrease current TA of given TBF on receiving of relative amount of TA adjustment provided by PH-DATA-IND from L1 - The PCU needs to set absolute TA of given TBF on receiving absolute TA provided by PH-RA-IND from L1. Change-Id: I65212f8203f1a35278890f51db038d689b2493d5
2017-09-01Support receiving SI13 from BTSMax1-1/+3
* store SI13 in BTS struct * check and handle BCCH SAPI Change-Id: I610a93ce23725b182ec14e3507331295bd542f74 Related: OS#2400
2017-08-18EDGE: Fix UL link adaptation.Minh-Quang Nguyen1-0/+1
We have seen that UL MCS5- MCS9 link adaptation has not been implemented in current PCU implementation. If the MS slowly moves far away from the BTS, the UL MCS will always stick at MCS9 no matter UL link quality values leading to poor data service experience. The UL MCS is expected to adapt from MCS9 -> MCSx due to bad UL quality. Below PCU traces indicate that UL MCS is quickly increasing to MCS9 (max MCS 9 was used in this test) and it never changes to other UL MCS due zero thresholds. <0004> gprs_ms.cpp:670 MS (IMSI ): Link quality 23dB (23dB) left window [0, 0], modifying uplink CS level: MCS-6 -> MCS-7 <0004> gprs_ms.cpp:670 MS (IMSI 000): Link quality 23dB (23dB) left window [0, 0], modifying uplink CS level: MCS-7 -> MCS-8 <0004> gprs_ms.cpp:670 MS (IMSI 000): Link quality 23dB (23dB) left window [0, 0], modifying uplink CS level: MCS-8 -> MCS-9 Change-Id: I9272c337ad6399da4a47cc6e2736e25f24e099d8
2017-08-14Move DL assignment to TBF-DLMax1-2/+0
This function does not really belongs to BTS and it heavily relies on direct access to TBF-DL members anyway. Change-Id: I04584103018675a2f35cfb565473bfd81a208d7c Closes: OS#1540
2017-08-09Add pcu-socket vty configPau Espin Pedrol1-0/+3
osmo-bts already supports configuring a different path for the bts<->pcu socket by using the 'pcu-socket' config field. Change-Id: I9b3e1171da467519750b201849ec892a1e318129
2017-07-29GSMTAP: Ad PTCCH as separate gsmtap categoryHarald Welte1-0/+1
This allows us to send GSMTAP for PTCCH only if requested by user/vty Change-Id: Id720f4bebdce7f6152fbddddbe05036638c5866e
2017-07-21Introduce GSMTAP categoriesHarald Welte1-3/+22
When looking at GSMTAP output so far, one is easily overwhelmed by way too much information being presented. A lot of is consists of DUMMY frames, which are probably of lowest interest, ever. A concept similar to the "gsmtap-sapi" of OsmoBTS is introduced, by which the user can configure which particular categories (uplink or downlink control or data, gprs or egprs, ...) he actually wants to see in his logs. Change-Id: I297183690e98a7234dfc1608c18847d8981306e4
2017-03-13bts.cpp: Fix overloading ambiguityMax1-1/+1
Fix error introduced in 1275a3f91a744e011b0dba82b09124d249c7abb5 by using signed 32 bit integer which is enough for Frame Number in GSM. Also, mark parameter constraints more explicitly: - add assert for expected FN values - don't perform computation for non-relative FN The error was: bts.cpp: In member function ‘uint32_t BTS::rfn_to_fn(uint32_t)’: bts.cpp:554:25: error: call of overloaded ‘abs(uint32_t)’ is ambiguous if (abs(rfn - m_cur_rfn) > RFN_THRESHOLD) { ^ In file included from /usr/include/c++/6/cstdlib:75:0, from /usr/include/c++/6/stdlib.h:36, from /usr/include/osmocom/core/linuxrbtree.h:97, from /usr/include/osmocom/core/timer.h:35, from ./bts.h:29, from bts.cpp:21: /usr/include/stdlib.h:735:12: note: candidate: int abs(int) extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur; ^~~ In file included from /usr/include/c++/6/stdlib.h:36:0, from /usr/include/osmocom/core/linuxrbtree.h:97, from /usr/include/osmocom/core/timer.h:35, from ./bts.h:29, from bts.cpp:21: /usr/include/c++/6/cstdlib:185:3: note: candidate: __int128 std::abs(__int128) abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; } ^~~ /usr/include/c++/6/cstdlib:180:3: note: candidate: long long int std::abs(long long int) abs(long long __x) { return __builtin_llabs (__x); } ^~~ /usr/include/c++/6/cstdlib:172:3: note: candidate: long int std::abs(long int) abs(long __i) { return __builtin_labs(__i); } Change-Id: Ib6d895a97aa35414f245ea4406c6e78f1b4fb5b8
2017-03-05BTS: Convert relative frame numbers to absolute frame numbersPhilipp Maier1-0/+2
The implementation of the method rcv_rach() in class BTS, restores the absolute frame number of the incoming RACH-Request by using the relative frame number (RFn = Fn mod 42432) from the rach request and the already known internal absolute frame number m_cur_fn, which is continusly updated by the CCU interface. In some rare cases, a RACH request might be received by the BTS, a very short time before the frame number wraps in its 42432. Depending on the PCU location, RACH request might be received by the BSC, which forwards it to the PCU. It is then likely that, while the RACH request is being forwarded to the PCU, the PCU internal absolute frame number wraps before the RACH can be processed. The relative frame number from the rach request would then be interpreted as if it were received after the wrapping of the internal frame number modulos. This commit adds logic to detect and resolve this race condition. Also a unit test is added to check some cornercases. Change-Id: I74f00c11e5739d49f370ce6c357149e81d9aa759
2017-01-06Array indexing for SPB counters in bts statistics.sivasankari1-3/+3
Array indexing mismatch is corrected for SPB counters. (bts_ctr_description with the bts counter declaration). Change-Id: I9b17ca0f838a37d9405cebf2319e722a302f5ed9
2016-12-22Add counter at BTS level And statistics at TBF/MS level.sivasankari1-0/+12
Adds spb counters at BTS level(show bts statistics). Adds RLC/MAC downlink control msg at ms level(show ms imsi <imsi_val>). Adds the number of coding schemes counter for UL at TBF level. Change-Id: Icbe4ba95e34bea89ee36f532d099db68204b7c38
2016-11-25Add new BTS level counterssivasankari1-0/+12
Adds counters for Immediate Assignment Reject, Packet Access Reject, Channel Request Description and Final Block resend. Change-Id: I23e326d4ea489aa4967e452fe02773b44ab146f7
2016-11-14Add BTS level countersMrinal Mishra1-0/+120
Adds counters for MCS blocks, 11 bit Rach counters and others. Change-Id: I605b0d66eb217decd35cbb8f87abfa577760245a
2016-10-19Use qbit-TA to update Timing AdvanceMax1-0/+9
Separate qbit-TA to TA conversion into separate function and use it for computing and updating Timing Advance. Note: the code was tested with TA=0 only to make sure it does not introduce regressions. Change-Id: I96fdbb20b09fb85fdd9fb6dcf3c25f6bee7f80e4 Fixes: OS#1531
2016-09-16Handle EGPRS 11 bit RACH in osmo-pcubhargava1-0/+2
A function is_single_block is added to get request type of RACH. EGPRS 11 bit RACH is handled. Change-Id: I61d74a32f7764644ed86f7fdf97fa3c2f61503f7
2016-08-27Change interface in osmo-pcu for 11 bit RACHbhargava1-1/+3
Interface structure between osmo-bts and osmo-pcu is updated with the parameters to differentiate the type of RACH and further support 11 bit RACH. The function prototype and definitions are changed accordingly. Interface version number is increased. Change-Id: I265c2d92d36d6cbcbeee60cdd8407dafe1da06a4
2016-08-25Add data structure to handle SPB for EGPRS DLAravind Sirsikar1-0/+4
Modify the header files with necessary data structure to handle Split block for EGPRS DL TBF. The EGPRS resegmentation feature allows PCU to retransmit RLC blocks of HeaderType1, HeaderType2 by segmenting them to 2 HeaderType3 blocks(Example MCS5 will be retransmitted as 2 MCS2 blocks). Table 10.4.8b.2 of 44.060 explains the possible values of SPB in HeadrType3 for DL direction. The PCU decides to retransmit the blocks by resegmenting it based on Table 8.1.1.1 of 44.060. The retransmission MCS is calculated based on current MCS of the Block and demanded MCS by PCU. Section 10.3a.3.3 of 44.060 shows the HeadrType3 with SPB field present in it Change-Id: I57673e53a9da2affa7e8aaa6551ac4b271c3d525
2016-06-16Add header type 1 support for EGPRS uplinkAravind Sirsikar1-1/+3
Function is added to parse the EGPRS header type 1 in uplink tbf path. along with configuration parameter updation to reflect max mcs in UL Change-Id: I13c250e2e07377982ac3f29745f3cffd4088552a Reviewed-on: https://gerrit.osmocom.org/270 Reviewed-by: Harald Welte <laforge@gnumonks.org> Tested-by: Jenkins Builder
2016-06-07add KPI counter to count bytes for RLC and LLC framesAlexander Couzens1-0/+23
rlc.dl_bytes bytes before sending rlc rlc.dl_payload_bytes count data w/o LI rlc.ul_bytes bytes when received rlc (only valid) rlc.ul_payload_bytes count data fragments w/o LI llc.dl_bytes complete encapsulated LLC PDUs llc.ul_bytes complete received LLC PDUs Change-Id: I9a98a5a375d39b3f4990360056c4d6145e755f4d Reviewed-on: https://gerrit.osmocom.org/145 Reviewed-by: Harald Welte <laforge@gnumonks.org> Reviewed-by: Holger Freyther <holger@freyther.de> Tested-by: Jenkins Builder
2016-05-22introduce new counter rlc_sent_controlAlexander Couzens1-0/+3
Counts control messages (UL/DL assignment, UL ACKs or page requests) Change-Id: Ib41031d430beddfb48d54470e632436f2c99c360 Reviewed-on: https://gerrit.osmocom.org/99 Reviewed-by: Holger Freyther <holger@freyther.de> Tested-by: Jenkins Builder
2016-05-21introduce new counter rlc_sent_dummyAlexander Couzens1-0/+3
rlc_sent_dummy count the amount of dummy package which are sent in case no data packet is in the queue. Change-Id: Ia60eab853d9145980f30d63e4ce4b520b8c51381 Reviewed-on: https://gerrit.osmocom.org/85 Tested-by: Jenkins Builder Reviewed-by: Holger Freyther <holger@freyther.de>
2016-02-22Introduce --gsmtap-ip/-i optionMax1-0/+2
This option allows user to use custom IP address instead of default "localhost". Correspondingly gsmtap init moved from sysmoBTS-specific code up to "bts" struct level. This way it can be easier reused by other implementations. The lack of regressions was verified by checking following command on sysmoBTS: "./osmo-pcu -c osmo-pcu.cfg -r 1 -i 192.168.10.1" where 192.168.10.1 is the host which was running wireshark and netcat: "nc -u -l 192.168.10.1 -p 4729" to accept gsmtap flow.
2016-02-08tbf: Add counters for aborted TBF in state FLOWJacob Erlbeck1-0/+6
Increment CTR_TBF_DL_ABORTED/CTR_TBF_UL_ABORTED if a TBF gets freed that is still in state GPRS_RLCMAC_FLOW. Sponsored-by: On-Waves ehf
2016-02-08edge: Make window size configurableJacob Erlbeck1-2/+2
Currently the window size is fixed to 64 even for EGPRS. Support dynamic window sizes depending on the number of PDCH. The WS can be set to b + f * N_PDCH. If the result is not valid according to TS 44.060, Table 9.1.9.2.1, the value will be corrected to use the next lower valid value (or 64). The following VTY commands are added (config-pcu node): window-size <0-1024> set base (b) value and leave f unchanged window-size <0-1024> <0-256> set base (b) and factor (f) Sponsored-by: On-Waves ehf
2016-02-08rlc: Add unified gprs_rlc_window parent classJacob Erlbeck1-0/+2
Currently gprs_rlc_ul_window and gprs_rlc_dl_window are completely separate classes, containing several identical members and methods. This commit add a shared parent class containing WS and SNS handling. Sponsored-by: On-Waves ehf