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229 Commits (e6683b7387455ff3fd90732808cb43accad42e66)

Author SHA1 Message Date
Francisco 23ae9967cf replaced present+value for optional field in s1ap mme_ue_s1ap_id context field 4 years ago
Francisco b8f220258d s1ap - extend s1ap unit test to verify result of passing an invalid mme s1ap ue id 4 years ago
Francisco c3482b45e1 s1ap - handle erroneous enb/mme s1ap ue id in received s1ap messages from the MME 4 years ago
Francisco d4a223b5b1 s1ap unit test - add correct cause to erab modify response when erab-id is not recognized 4 years ago
Francisco a68c50a282 s1ap - extend s1ap unit test to setup a full ue connection and modify bearer 4 years ago
Francisco 90bba3b85e s1ap - set s1 handover cause as s1 intra system handover triggered 4 years ago
Francisco 5eccfad05b gtpu - added comments, updated expected construct, handled in rrc the case a gtpu teid fails to allocate 4 years ago
Francisco 82b34f3b3f gtpu refactor - fix gtpu logging formatting 4 years ago
Francisco 44440cf562 gtpu refactor - use of raii to automatic path switch and teid removal in forwarding. Clean up of gtpu_tunnel_manager methods. 4 years ago
Francisco ab2bd9a2d2 gtpu refactor - handle dl path state activation internally in gtpu tunnel manager class 4 years ago
Francisco cfd24f6a0e gtpu - leverage byte_buffer_pool to store buffered sdus in gtpu 4 years ago
Francisco bdc5094e17 gtpu - added unit test for gtpu_tunnel_manager class 4 years ago
Francisco c201eb7708 use of more space efficient sorted vector structure for lcid tunnels of a rnti 4 years ago
Francisco eba0edea4a creation of static id obj pool class. Application of this class to gtpu tunnels container to avoid allocations 4 years ago
Francisco 3cf5e85b20 create separate class to handle gtpu tunnel creation/deletion/search 4 years ago
Francisco 099a533573 bugfix - verify that TEID exists before trying to access it 4 years ago
Francisco 1b47bee4c0 handover - avoid halting ho preparation just due to the presence of a handover restriction list or handover request extension field 4 years ago
Pedro Alvarez ea3c3b1d4f Added some checks for the byte buffer allocation in the GTP-U 4 years ago
Codebot 4523ee6087 rename srsLTE to srsRAN 4 years ago
Francisco a540c56552 gtpu bugfix - avoid erasing indirect tunnel and causing iterator invalidation while iterating list of tunnels 4 years ago
Francisco 977c194cbc gtpu,bugfix - handle the case when gtpu fails to allocate buffer for end marker. Also, added a timer that when expired, it autoremoves the GTPU handover tunnel 4 years ago
Pedro Alvarez dde8157bf1 Make sure that S1 Setup request is restarted regardless of which error made the procedure fail. 4 years ago
Francisco d41b6187c1 bugfix - remove extra \n from logging calls 4 years ago
Francisco 3e9f93eb8a refactor - remove old log_filter and logmap libraries from the codebase 4 years ago
Andre Puschmann 20cbc48f90 rlc_am_lte: refactor PDCP/RLC interface to use fix sized data structure 
this patch replaces the std::vector type used in the interface between
PDCP and RLC to signal delivery status between both layers. The new
data type is a configurable but fixed-size vector.
The RLC AM doesn't need to dynamically allocate the vector for every SN but
uses the tx_window for storage.
 4 years ago
Francisco 4969c98665 gtpu,bugfix - fixed formatting of addresses in GTPU 4 years ago
Francisco 5a1bf28fe1 optimization - minimization of number of std::string allocations for logging 4 years ago
Francisco c03dbc6742 fix RRC Connection Reestablishment procedure - correctly save old rnti bearer configuration in new rnti 4 years ago
Francisco a72a659fdf fix timers interface to avoid accessing to a timer after its release. fix gtpu tunnel activation during s1 handover 4 years ago
David Rupprecht 0f1586dd2d Deleted all HAVE_5GNR in CC and h files 
CMakeList and travis yaml
 4 years ago
Pedro Alvarez d8f3878ce1
RLC failure to deliver notifications and discard timer limits to 1500ms (#2368) 
* Added interfaces for the RLC to notify the PDCP of failure to transmit
SDU

* Limit discard timer to 1500ms, to avoid issues of lingering SDUs in the undeliverd_sdus_queue.

* Fix bug in early exit of notify_delivery and notify_failure

* fix compilation issue in rlc-pdcp notification

Co-authored-by: Francisco <francisco.paisana@softwareradiosystems.com>
 4 years ago
Pedro Alvarez 6ecd6e273c Make sure that the status report is sent in RLF and PDCP reestablishment triggered by Handover 4 years ago
faluco a940e169a3 Add the enb_cc_idx value to S1 events. 4 years ago
faluco a4605883f0 Implement second revision of the events and metrics document. 4 years ago
Pedro Alvarez cfd94441a5 Added metrics to srsenb PDCP 4 years ago
Pedro Alvarez b0fe302f8e Added interfaces so the upper layers can trigger the PDCP status report. Added ability to the UE to send Status Report aftre reestablishment. 4 years ago
Francisco Paisana 929b8650a3 handle byte buffer allocation error in s1ap 4 years ago
Francisco Paisana c40ad81a90 cleanup s1ap methods. remove hard coded erab list in s1ap handover required message. 4 years ago
Francisco 23459dee28 Created enb_{rlc/pdcp/gtpu/phy_interfaces.h files. 4 years ago
Francisco 43e57df00b breaking enb_interfaces.h into multiple files on a layer basis. Created enb_rrc_interfaces.h, enb_mac_interfaces.h and enb_s1ap_interfaces.h 4 years ago
Pedro Alvarez dd6d6f731d Passing SN provided by upper layers to PDCP entity. Using it to calculate TX_COUNT if passed. 4 years ago
faluco 6359a2d948 - Upgrade the gtpu class in lib dir to srslog. 
- Propagate old log elimination through all the dependencies of gtpu.
 4 years ago
Francisco 4188b5146e fix uninitialized memory access in gtpu_test and liblte_mme unpacking 4 years ago
faluco 9d15a44c73
Port lib/phy to srslog (#2298) 
* - Ported the channel class to srslog.
- Removed all newlines of log messages in lib/phy.

* Remove more newlines that use the C debug macros.
 4 years ago
Francisco 3265d940ec remove byte buffer pool cached member variables as they are unnecessary now. 4 years ago
Francisco 04ab4eefcd use new make_byte_buffer() helper method to create unique_byte_buffers 4 years ago
Pedro Alvarez de90b4753f Added the ability of the RLC AM to notify the PDCP of the acknowledged 
PDCP PDUs. This includes:

- Modifying the byte_buffer_t to include PDCP SN meta-data. This way,
  the RLC can keep track of the ack'ed bytes for a specific PDCP PDU.
- Added in the RLC an `undelivered_sdu_info queue`, to keep track of the
  amount of ack'ed bytes and the total size of the PDCP PDU,
  so the RLC can know when delivery is finished.
- Added an interface between the PDCP and the RLC so that the RLC can
  notify the PDCP when it receives an ack from the status PDUs. The RLC
  passes to the PDCP a vector of all the ack'ed pdus in a rx'ed status PDU.
- Added some tests to the notify functionality. This includes some tests
  where the PDUs are acked imediatly, and one test where the PDU is
  retx'ed.
 4 years ago
Francisco c4a50b7de0 avoid loss of pdcp sdus' SNs buffered in gtpu during handover 4 years ago
Francisco 9e25e95545 fix S1AP UE Capability Indication message. Created helper to log received S1AP messages 4 years ago
Francisco 78d1b8083a fix GTPU tunneling. Avoid forwarding packets to PDCP while the PDCP bearer is not yet created 4 years ago
Francisco ec14a6e50b verify correctness of input to gtpu::write_pdu 4 years ago
Francisco 411946c752 Improvements on GTPU message logging 
- Avoid multiple lines per each SDU Rx or Tx
- log info relative to source and destination of each SDU
- log info relative to whether the Rx SDU has been forwarded into a tunnel
- log info relative to whether the Rx SDUs are being buffered.
 4 years ago
Francisco cd68e604b0 fix s1ap UE find method 4 years ago
Francisco 2bde28252c send UE capability indication through S1AP 4 years ago
Francisco d64ce7df77 implementation of S1 E-RAB Release Indication and Error Indication messages 4 years ago
Francisco 2befbd1825 setup of forwarding tunnels during enb s1 handover 4 years ago
Francisco e8f6a436af update gtpu test to account for scenario of buffered PDCP SNs, and buffering of direct path until indirect tunnel is closed 4 years ago
Francisco a55c4cdca5 avoid gtpu extension header pdcp number magic number 4 years ago
Francisco 56ec2c286e add gtpu test for tunneling 4 years ago
Francisco 13649e4e19 Implement new GTPU functionality: 
- multiple tunnels per E-RAB
- data forwarding between connected GTPU tunnels
- forwarding GTPU End Marker between connected tunnels
- TeNB GTPU handles in-sequence delivery when multiple tunnels for the same ERAB exist.
 4 years ago
faluco 711438f756
Port enb specific classes to use srslog (#2155) 
* - Started porting the enb PHY layer to use srslog loggers.
- Updated srslog to manage the none level.

* Finished porting enb phy layer including the NR part.

* Ported MAC, GTPU, PDCP, RLC and S1AP enb classes to use srslog.

* Use new stack logger.

* Ported the enb RRC clases to use srslog.

* Remove unused log macros.

* Replace loggers in sched, sched_carrier, sched_helpers.

* Replaced loggers in sched grid.

* Replaced loggers in sched harq.

* Replaced loggers in sched ue.

* Replaced loggers in sched ue ctrl.

* Replace loggers in sched ue ctrl TPC.

* Replaced loggers in sched subclasses.

* Replaced loggers in rrc_meascfg_test

* Configure loggers in rrc_mobility_test.

* Fix compilation errors left out after the rebase.

* - Implement a custom log sink that will serve as a test spy to intercept and count the number of error and warning log entries.
- Adapt the erab_test_setup and rrc_mobility tests to use this new class and make them pass again.

* - Remove trailing new lines introduced in the rebase.
- Ported the sched_ue_cell class to srslog.

* Remove unused log member.

* Ported mac tests to srslog.

* - Removed remaining trailing newlines from log entries.

* Fix compiler errors detected in CI.

* Fix another static variable without definition passed to log lines.

* Fixed a bug in srslog::flush that would never end when the backend queue is full.

* Fetch the RRC logger instead of injecting it in the constructor.
 4 years ago
Pedro Alvarez 0c20b7a455 Added support for S1AP modify bearer request support. This includes: 
- Handle received E-RAB S1AP at s1ap.cc.
 - Added methods to rrc.cc, rrc_ue.cc and rrc_bearer_cfg.cc to handle erab modify request.
 - Made RLC add_bearer() function capable of re-creating the RLC entity.
 - Send RRC reconfiguration to the UE and reply to the EPC with S1AP
   modify bearer response.

This commit also adds support to srsEPC to send S1AP modify bearer request for
testing purposes.
 4 years ago
Ismael Gomez 0498439d41
Backport some changes from FAPI branch (#2124) 
* Reorder DCI FORMAT enum

* Fix endianness issue

* Fix return codes in phy_ue_db

* Log members should be destructed after the layers.

* Add JSON metrics and Events. Add Alarm log channel. Simplify MAC metrics struct.

* Restore metrics_stdout change
 4 years ago
Francisco Paisana 82eb31f70f add rlc metrics to enb 4 years ago
Francisco e2654e69ec Enable pdu stack latency measurements in the eNB. 4 years ago
Pedro Alvarez 7eebd71627 Added S1AP E-RAB release command/response handling to srsENB. 
Added the ability to srsEPC to send the E-RAB release command.
 4 years ago
Pedro Alvarez 49bcffcdf8 Fix issue packing TEID in Error indication. 4 years ago
Pedro Alvarez 235f373af7 Started to add ability to send error indication when G-PDU from invalid TEID is received. 4 years ago
Andre Puschmann 07d2bc4fe8 change license header to agnostic version with hint to root LICENSE file 4 years ago
Pedro Alvarez d05bc064b5 Reduced SCTP connect() timeout. 
Added configuration for RTO_MAX. Cleanup debug prints.
 4 years ago
Francisco Paisana 137e554eb3 reestablish pdcp bearers is required in case of AM bearers 4 years ago
faluco dfeed52514 - Rename out_stream function to console. 4 years ago
faluco 62faef7c71 - Replaced all uses of the log::console method. 4 years ago
Francisco Paisana dcf5a727f2 do not send RRC release in case the eNB receives a S1AP UEContextRelease command and the UE is doing handover. Handle GTPU end marker 4 years ago
Andre Puschmann 49655cd33c enb,s1ap: only log info in the s1ap connection procedure 
the event is logged as error by the calling function already
 4 years ago
Andre Puschmann 655c7ae8ae enb: fix warning when removing user 
when removing a user from the eNB we iterated over all possible LCIDs
and set the buffer state to zero in the scheduler.

this resulted in following log entries:

13:57:23.856334 [RRC ] [I] Received Release Complete rnti=0x46
13:57:23.856352 [MAC ] [W] [ 5149] The provided lcid=6 is not valid
13:57:23.856362 [MAC ] [W] [ 5149] The provided lcid=7 is not valid
13:57:23.856368 [MAC ] [W] [ 5149] The provided lcid=8 is not valid
13:57:23.856371 [MAC ] [W] [ 5149] The provided lcid=9 is not valid
13:57:23.856376 [MAC ] [W] [ 5149] The provided lcid=10 is not valid

we now check if the bearer exits at RLC and only report those to the MAC.
 4 years ago
Francisco Paisana bb5dd92dca implemented s1 handover cancellation procedure to force the target enb to release the ue ctxt 4 years ago
Francisco Paisana 8c9e596f89 refactored s1ap handover request interface. cleaned up rrc tenb s1 handover code 4 years ago
Andre Puschmann 8e631131c0 s1ap: fix uint64_t printf for 32bit machines 4 years ago
Francisco Paisana 5d1343fe75 implemented S1 bearer status transfer 4 years ago
Francisco Paisana db8af399f8 extended rrc tenb s1 handover test. implemented layer reconfig during s1 handover 4 years ago
Francisco Paisana 7605c7df23 added s1ap handover notification, fixed s1ap asn1 bug, and fixed bad fields for admitted erabs in ho req ack 4 years ago
Francisco Paisana 26f46ea067 add S1 Handover Request handling in target eNB 4 years ago
Ismael Gomez 382811e10e
Update S1AP RNTI context when doing Reestablishment (#1582) 4 years ago
Andre Puschmann a7911f0dab pdcp,rlc: refactor SDU queueing policy 
this patch refactors the SDU queuing and dropping policy of the RLC and PDCP layer.
the previous design had issues when packets have been generated at a higher
rate above the PDCP than they could be consumed below the RLC.

When the RLC SDU queues were full, we allowed two policies, one to block on the write
and the other to drop the SDU. Both options are not ideal because they either
lead to a blocking stack thread or to lost PDCP PDUs.

To avoid this, this patch makes the following changes:

* PDCP monitors RLC's SDU queue and drops packets on its north-bound SAP if queues are full
  * a new method sdu_queue_is_full() has been added to the RLC interface for PDCP
* remove blocking write from pdcp and rlc write_sdu() interface
  * all writes into queues need to be non-blocking
  * if Tx queues are overflowing, SDUs are dropped above PDCP, not RLC
* log warning if RLC still needs to drop SDUs
  * this case should be avoided with the monitoring mechanism
 4 years ago
Francisco Paisana 5e06430455 removal of stack handler interface 4 years ago
Francisco Paisana 1a9c04bf2f use of task scheduler handle in pdcp 4 years ago
Francisco Paisana 42969ad992 add tb size as argument to gnb 4 years ago
Francisco Paisana f0874b780b add radio_base/null classes 4 years ago
Pedro Alvarez 9c1a7d2cf1 Removed get_bearer_status in PDCP. Renamed get_state/set_state to 
get_bearer_state/set_bearer_state.
 4 years ago
Pedro Alvarez 66d4f320e5 Added intereface to set PDCP state after reestablishment. 4 years ago
Pedro Alvarez 33567d81db Added interface to get internal PDCP state. 4 years ago
Pedro Alvarez 9df40c3af0 Added debug GTPU print. 4 years ago
Francisco Paisana f5174415f8 add srsenb::sdap class 4 years ago
Francisco Paisana 0916e29de4 add srsenb::rlc_nr class 4 years ago
Francisco Paisana 9001117b2d add srsenb::pdcp_nr class 4 years ago
Pedro Alvarez 960c0e97cd Added handling of RRC re-establishment to srsENB. 
* Added the appropriate code for handling and sending the
   re-establishment procedure messages to rrc_ue.c/.h.
 * Triggered RRC reconfiguration after the reception of RRC
   re-establishment complete
 * Refreshed K_eNB at the reception of re-establishment
   request
 * Changed the mapping of TEIDs to RNTIs in the GTP-U layer,
   as the RNTI might change with reestablishment.
 4 years ago
Francisco Paisana 452c043370 created a global map of lcids to srbs/drbs for NR 5 years ago
Francisco Paisana 026628a84f use of reestablishment method to reset the RLC bearers during handover 5 years ago
Ismael Gomez a1f0f8de35
Add callback to RLC to indicate BSR for TX and reTX queues (used in ENB) (#1361) 5 years ago