85 Commits (4fd539590369ed950b7e1b881ca4b5581f92e6c6)

Author SHA1 Message Date
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
5 years ago
Francisco Paisana 5e06430455 removal of stack handler interface 5 years ago
Francisco Paisana 1a9c04bf2f use of task scheduler handle in pdcp 5 years ago
Francisco Paisana 4f5e65781f created task scheduler class to deal with timers, thread pool, multiqueue, internal tasks 5 years ago
Andre Puschmann 218fa5cf55 ttcn3_dut: fix bug in DUT
reducing the sync queue len to 1 caused an issue when the
PHY was locking the mutex while trying to push a TTI event
on the stack.

instead of signaling the new TTI within the PHY, we now do it outside
in the DUT (after releasing the PHY mutex)
5 years ago
Andre Puschmann a5c0f96fa7 srsue: limit sync queue length to 1 for ZMQ radio
apply same change that we've done on the eNB also on the UE
to avoid the PHY processing TTIs faster than the stack.

Without that, we see lots of those in the logs:

...
08:39:17.580325 [STCK] [W] Detected slow task processing (sync_queue_len=7).
...
5 years ago
Andre Puschmann c15b2ec810 ttcn3_dut: always create timer when enabling TESTMODE B
create timer but dont yet set it. this avoid adding multiple
checks if the timer var is actually initialized.
5 years ago
Andre Puschmann 63f1ea1bec ttcn3: streamline DRB and SRB Tx interface
use the same tx interface with const uint8_t* and length byte instead of std::string
5 years ago
Daniel Willmann 7a25d1d300 Send the RRC_PDU_IND as JSON
Fixes: srslte_ttcn3#13, srslte_ttcn3#15
5 years ago
Andre Puschmann 2c5e159420 ttcn3_drb_interface: remove use of GetArray()
unfortunately, the rapidjson version shipped with Ubuntu 16.04
doesn't support the GetArray() API so we need to use
normal iterator to loop over the array
5 years ago
Andre Puschmann bf6ddbe976 ttcn3_drb_interface: use uint8_t and len as tx interface 5 years ago
Andre Puschmann 7f47edf67f fix issue where PDCP SDU was not going through UE stack to SS
this cause the PDCP echo reply not to appear in MAC/PCAP
5 years ago
Andre Puschmann 07f22326b4 pass current SS TTI when formatting DRB common IND 5 years ago
Daniel Willmann 8652f75510 Don't try to guess the lcid, use what we got 5 years ago
Daniel Willmann 0b88161b3c Send DRB PDUs as JSON to TTCN3 5 years ago
Daniel Willmann 31f1516d74 Use callback to establish connection before sending PDUs in TestmodeB 5 years ago
Daniel Willmann 9aa441f8b6 ttcn3_ue::timer_expired(): Loop through the correct queue
Fixes a segfault when a NULL pdu is passed to loop_back_pdu_with_tft()
5 years ago
Daniel Willmann a3adba0081 Implement DRB establishment and handle rx/tx 5 years ago
Daniel Willmann 999de5f484 ttcn3_helpers: Add function to generate JSON for DRB PDUs 5 years ago
Pedro Alvarez 9c1a7d2cf1 Removed get_bearer_status in PDCP. Renamed get_state/set_state to
get_bearer_state/set_bearer_state.
5 years ago
Daniel Willmann 0e99e2f6eb srsue: Refactor definition to live in its own .cc file 5 years ago
Francisco Paisana b8e6ba02e4 remove warnings related to unused vars and fwd declarations with trivial dtors 5 years ago
Francisco Paisana b506e29b72 removed common ce_typeenum 5 years ago
Xavier Arteaga 58803d1b3e Added UL EARFCN map and UE PHY interface cleanup 5 years ago
Francisco Paisana 6ddedd5972 moved pdu to common mac folder 5 years ago
Francisco Paisana c09f76ed6c unified stack task defer method 5 years ago
Andre Puschmann d35c9e2b89 nas: add support ot UE test loop mode B
extend GW-NAS interface to signal test mode activation.
The method is a noop in the normal GW but is implemented in
the TTCN3 DUT according to TS 36.509 for Mode B
5 years ago
Andre Puschmann 451bbb20e8 ttcn3_ss: refactor AS security activation and use new timed call 5 years ago
Andre Puschmann 54a99d3f66 ttcn3_dut: add basic DRB handler skeleton
the handler is currently just listening on the designated port
and prints the received JSON string
5 years ago
Andre Puschmann 84d80f3e32 ss: use factory method to create PDCP config for SRB 5 years ago
Xavier Arteaga 25312e81b4 SRSUE: cell select RRC MEAS CFO is carried to PHY Cell object 5 years ago
Xavier Arteaga cbaba9c0bd Fix RRC and TTCN3 test 5 years ago
Francisco Paisana 30ae2226c1 common interface for stack multiqueue tasks, background tasks and timers 5 years ago
Andre Puschmann 9239bb14a6 ss: store current TTI in DL/UL grant struct
this fixes the TTI log in the PCAP generated by the UE
5 years ago
Andre Puschmann 5267a88d60 ttcn3_ss: remove unneeded NDI reset 5 years ago
Andre Puschmann 562b4ef6c8 ttcn3_ss: add missing timer stepping 5 years ago
Francisco Paisana 344eaf49ec use logmap in the whole enb and ue 5 years ago
Francisco Paisana 82cb6baef0 now the whole ue and enb mac uses the logmap 5 years ago
Francisco Paisana d3f49d0e3c changed interface sync-stack to allow tti jumps > 1 5 years ago
Xavier Arteaga e832769ae6 Updated copyright 5 years ago
Daniel Willmann 3a804e23fa ttcn3_sys_interface: Parse SIBs even when "StaticCellInfo" is missing
The test TC_9_2_1_1_1 sends a Cell->AddOrReconfigure->Basic message
without a "StaticCellInfo" member. This is used to change SIB1 of
the cell and simulate a different PLMN/TAC in the test.

handle_request_cell_basic() ignored the json message if "StaticCellInfo"
is missing which results in the SIB not being updated (PLMN stays as
00102 for example).
With this patch the SIBs after the json are now parsed even if there
"StaticCellInfo" is missing. A confirmation of the json is not sent
because the test does not seem to expect one in that case.

Related: TC_9_2_1_1_1
5 years ago
Daniel Willmann bc4e4ff97b ttcn3_ip_sock_interface.h: Don't respond to UDP/ICMP Close
A close request should not be responded to with a ctrl_cnf
5 years ago
Xavier Arteaga 76408b195e Rename TX_DELAY and FDD_HARQ_DELAY_MS 5 years ago
Xavier Arteaga e8f9bfc6ba Addition of PRACH TA correction 5 years ago
Pedro Alvarez 96c82b3fc6 Moved PDCP configs to pdcp_config.h. Added `as_security_cfg_t` structure to hold access stratum keys.
Refactored PDCP, RRC and USIM accordingly.
5 years ago
Daniel Willmann 1314b8f653 Implement override_lcid() function in ttcn3_sys_interface
Fixes: TC_7_1_1_1 (#6)
5 years ago
Andre Puschmann e7c10270fa ttcn3_ss: fix security activation for PDCP 5 years ago
Andre Puschmann 5a03eaed2b ss: move timing_info_t to ttcn3_helpers, fix PDCP count handling 5 years ago
Andre Puschmann 72c5b381e4 fix bug when parsing cipher algo config for SS 5 years ago
Andre Puschmann 8a69772ebc rewrite packing of DL PDU in SS
the new algo tries to write more than just one RLC PDU inside a MAC PDU
if this is possible
5 years ago