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280 Commits (16de8668e00fe9902a652eb71570a5f6745b4b6c)

Author SHA1 Message Date
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 1ffc4cef86 rlc am,optimization - change helper log methods to avoid mallocs 4 years ago
Francisco d1236fd62f stack,optimization - replaced previous block_queue design for new bounded queue in several places in the enb 4 years ago
Andre Puschmann 83f24fbf77 rlc_am_test: fix max_retx test 
the test should only check the correct signaling of the maxretx
to the upper layer.
 4 years ago
Andre Puschmann 9f627911df rlc_am_{control}_test: extend status PDU test 4 years ago
Andre Puschmann fa23be4d6d rlc_stress_test: fix SDU generation 
the PDCP SN was used to fill the SDU with data. But since
the max value isn't devisable by 256 it didn't always increment
correctly. Use a normal byte now that wraps correctly.
 4 years ago
Andre Puschmann 5e345df439 rlc_stress_test: make pedantic operation the default 
among cleaning up the the stress test, it does:
* remove optional pedantic flag and make it the default to catch resegmentation issues
* use random SDU and MAC grant size the default
* use factory functions to create RLC configs (make maxretx configurable)
* remove reestablishment and print error when maxRetx is triggered
* fix NR PCAP usage and removes PCAP ifdef
 4 years ago
Andre Puschmann 1a59f2d5ba rlc_am_test: extend header reconstruction test 
this patch adds various new test cases generated from
rlc_stress_test to test header reconstruction.
 4 years ago
Pedro Alvarez 7b23a83306 Fixup tests to consider wrap-around in status report 4 years ago
Pedro Alvarez c4e9516561 Fix issue when LMS wraps-around and FMS doesn't in PDCP status report. Fix incorrect update of FMS on clear_sdu. Adding unit test to LMS wrap-around. 4 years ago
David Rupprecht 5a95cbdfae Disable rat assignment in pcap class 4 years ago
Pedro Alvarez 4011714664 Fix errors in RLC stress tests due to PDCP SN wrap-around 4 years ago
Francisco b329e25bbb move ue phy interfaces to separate interfaces header file 4 years ago
Francisco b8bd869d0f move ue rlc interfaces to separate interfaces header file 4 years ago
Francisco a988351f46 move ue pdcp interfaces to separate interfaces header file 4 years ago
Francisco ea04104e8e move ue gw interfaces to separate interfaces header file 4 years ago
Andre Puschmann c0a1b0efa3 rlc_am_test: add TC to check RLC AM drops PDU if max retx have been reached 4 years ago
David Rupprecht fc9d5befda Remove header test case 4 years ago
Andre Puschmann 5e93a6f5bd rlc_um_nr_pdu_test: add 12bit SN unpack test 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 24d5b9071c Fix issue with status report test config 4 years ago
Pedro Alvarez 89a23cec7e Added statusReportRequired to the PDCP entity config. 4 years ago
Pedro Alvarez 2ed8dceddf Use TX_COUNT in RLC AM stress test. Avoids issue with re-using SNs within the test 4 years ago
Pedro Alvarez f89b644902 Added function to get control pdu type to the PDCP base class. Shorten logger name in PDCP Status report test. 4 years ago
Pedro Alvarez 9bc08af880 - Added ability to the PDCP LTE entity to send PDCP Status report. 
- Added handling of PDCP status report to the PDCP LTE entity.
- Added test to the generation and handling of PDCP status report.
 4 years ago
Francisco Paisana 5e48327eca fix valgrind memcheck warnings in rlc_am_test 4 years ago
Francisco dc4283c572 added cmake functions as helpers to set labels in ctests 4 years ago
Pedro Alvarez 492ea2a5a8 Addressing reviewers comments to #2290. 
Removing unecessary \n for logs and changed log of PDCP info queue
 capacity to debug to avoid log spam.
Changed log level for unhandled S1AP messages from error to warning
 in EPC to avoid failing tests because of error message.
Changed usage of allocate_unique_buffer to make_unique_buffer()
 4 years ago
Pedro Alvarez fcaaf72187 Starting to add discard functionality to PDCP LTE entity. 
This includes:
  - Adding a queue (implemented with std::map) for undelivered PDUs.
    This queue uses the SN used for TX as the key.
  - Added discard timer that is started upon reception of the SDU. Upon
    expiry of the timeout a discard callback removes undelivered PDUs
from the queue.
  - Added the mechanisms to the notify_delivery to remove PDUs from the
    undelivered queue when the PDU is ACK'ed.
  - Added test case for both timer expiry and acknowledgment.
  - Fix up the getter for buffered SDUs to return the undelivered SDUs
  - Changed default PDCP discard timer, so AM has a discard timer by
    default.
 4 years ago
faluco 57f66febfc Ported the RLC classes to srslog in the lib dir. 4 years ago
faluco f424f2e113 - Upgraded PDCP classes in lib to use srslog. 
- Update tests to new changes.
 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
Francisco 8a9c326bcb remove old direct uses of byte_buffer_pool 4 years ago
Francisco 1e2153769e remove byte buffer pool cleanup method and unnecessary mutexes 4 years ago
Pedro Alvarez 7b25eac47c Fix race condition in rlc_am_stress test and other fixes related to this 
test. The race condition was being cause by write_sdu being called
simultanously to read_pdu, which could cause the read_pdu to try to get
the SDU info before it had been written by the write_sdu.

Changes in this commit include:
 - Make sure PDCP sn in included in RLC AM stress test.
 - Stop handling control PDU when TX is not enabled in RLC AM.
 - Fixed issue with length of the PDCP SN in rlc_stress_test.
 - Moved the place were sdu info erase was called to avoid double calls to erase
 - Tentative fix for race condition in rlc_am_stress test.
 - Added function to print information about undelivered_sdu_info_queue
   for debugging.
 4 years ago
Pedro Alvarez d0ef6ce00b Fix typos and bad comments in rlc_am_lte.cc and rlc_am_test.cc 
Added checks for the nack_sn in the status reports of the rlc_am_test.
 4 years ago
Pedro Alvarez 24db20bcca Removed some unused variables after changing method of tracking notifications. Removed rlc_am_notify_pdcp test file. Testing is now in rlc_am_test.cc 4 years ago
Pedro Alvarez 6c071a784c Changed notification mechanisms to use map of acked SNs instead of acked bytes. 
This was required due to an issue where bytes were counted twice when a
packet had been lost.
 4 years ago
Pedro Alvarez 649d642776 Moved notification tests from rlc_am_notify_pdcp_test.cc to rlc_am_test.cc. 
This added some tests to resegmentation.
 4 years ago
Pedro Alvarez de669d214a Fix test header and queue_capacity check in RLC notifications. 
Also, remove unecessary nullptr initializaion and fixup some newlines.
 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
David Rupprecht 99c3aa9ba2 Refactor assert to TESTASSERT in unit test 4 years ago
Pedro Alvarez 350e90a030 Make RLC retransmissions deterministic. It was creating unpredictablity 
in the RLC AM tests. See issue #2228
 4 years ago
Pedro Alvarez 6ca8bc12ec Fix wrong SN in RLC status PDU when packet is dropped. 4 years ago
Andre Puschmann bc4c9606ce rlc_am: add extended bearer metrics 
this patch adds support for measuring the:
* SDU rx latency (Average time in ms from first RLC segment to full SDU)
* amount of buffered bytes (sum of payload of PDUs buffered in rx_window)

the implementation is using std::chrono
 4 years ago
Andre Puschmann c0883291f6 rlc: pass TTI to get_metrics to calculate "real" LTE rx/tx rate 
when retrieving the RLC metrics, the number of TTIs since the last
call are passed. This allows to calculate the actual rate
based on the LTE timing rather than only the system timing.
 4 years ago
Pedro Alvarez 38206bea69 Fixed RLC AM fixed header size in get_buffer_state function. Fixed RLC AM tests accordingly. 4 years ago
Andre Puschmann 07d2bc4fe8 change license header to agnostic version with hint to root LICENSE file 4 years ago