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50 Commits (58a9610efaac3a6cd88a51486529c3452c2f8dbe)

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
Andre Puschmann df50dd7d3c rlc: extend RLC metrics 
extend RLC metrics to count Rx/Tx PDUs/SDUs bytes/#
 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
Xavier Arteaga 77d5dedddc Fix LGTM warnings and recommendations 5 years ago
Francisco Paisana 344eaf49ec use logmap in the whole enb and ue 5 years ago
Francisco Paisana 46a1be3e76 updated mac-rlc interface to use unique_byte_buffer 5 years ago
Xavier Arteaga e832769ae6 Updated copyright 5 years ago
Ismael Gomez 52716f8716 Process HO complete in the background to avoid heap-after-use bug when PHY measurements are reported during a HO 
rrc_meas refactor. Need to split commit

Fix typo

Temporal commit

Apply rx_gain_offset to neighbour cell measurements

srsLTE: modify TESTASSERT Macro to follow codeline

SRSUE: prevent RRC from having serving cell in neighbour list

SRSUE: DL HARQ does not need Time Aligment Timer. UL is disabled using PUCCH resources release

SRSUE: extend intra-frequency to CA SCell

SRSUE: fix confusing/ambiguous code in the RRC measurements and fix concurrency issue

SRSUE: remove RRC measurement report triggers when measurements are modified or HO succesful

SRSUE: fix compilation issues and Reest SIB indexes

Fixes sync using incorrect cell configuration when search cell does not find a correct cell

Small refactor to remove measurement report triggers always after removing measurement

SRSUE: Removed SIC PSS from UE

SRSUE: fix inter-frequency reestablishment and added more traces

SRSUE: Fix compilation issue
 5 years ago
Pedro Alvarez c5979f59eb Clang format UE, eNB and lib (#850) 
* Clang-formated UE, eNB and lib.
* Fixed compiling errors from clang-format.
* Fix linking issues introduced by clang-format
* Fix poor formating in initializing arrays of arrays.
* Fix mistake in conflict resolution on rm_turbo.c
* Re-apply clang format to gtpc_ies.h
 5 years ago
Pedro Alvarez 2e7ddef038 Continue to add discard_sdu to RLC interfaces. 5 years ago
Francisco Paisana d2c56caf7e applied new timer class to the whole code base 5 years ago
Francisco Paisana 67d6a25194 Moving mac timers to stack timers (#638) 
* first step towards moving MAC timers to stack. Mac is still using its own timers. srslte::timers class can be restructured.

* moved timers out of the UE MAC
 5 years ago
Andre Puschmann e42449532b fix wrong namespace definition in various places 5 years ago
Ismael Gomez 8c41625599 Add RLC suspend and resume 6 years ago
Francisco Paisana 58e2e51044 removed rlc_interfaces. The rlc_cnfg types are now part of the rrc_interface_types. Removed implicit RB initialization in the RLC. 6 years ago
Andre Puschmann 58763fb714 stack: move initialization of log object into ctor 
this fixes the issue when the stack is torn down if, for example,
the radio couldn't be loaded correctly. it will hence call stop() on all stack
components which are not initialzized yet, and logging therefore doesn't work.
the log object is know during contruction time and therefore can be passed
in as soon as possible.
 6 years ago
Francisco Paisana 415d3418b6 reorganized enb to mirror ue director/class structure with a stack class 6 years ago
Andre Puschmann e8d6236975 remove init for all RLC TM/UM/AM 
- all RLC entities are now initialized during contruction
- there is no need to check for, e.g., existance of timers, during
  runtime
- there is also no need to call re-init during resume
- timers are freed in dtor
 6 years ago
Ismael Gomez ade720e032 Add RLC resume procedure 6 years ago
Francisco Paisana 3bedc93ba5 added _t to unique_byte_buffer type 6 years ago
Francisco Paisana f469e2178b replaced byte_buffer_t allocated by the buffer pool for unique_byte_buffer which is safer and easier to use 6 years ago
Francisco Paisana 0976ea6f27 created a unique byte buffer that automatically deallocates 6 years ago
Andre Puschmann 4b01a2e4a0 update copyright notice 6 years ago
Andre Puschmann 86232c143e expose RLC tx queue length through config struct 6 years ago
Andre Puschmann c3441046c9 simplify RLC buffer status query procedures 
- add a simple and low-overhead has_data() method to check whether
  an RLC entity has data to transmit or not
- use this method for all calls that are actually not interested
  in the amount of data to send
- use the more expensive get_buffer_state() for all cases where
  the actual size of the buffer is of importance
 6 years ago
Andre Puschmann b71dab87f1 add function to query if RLC bearer exists (the implementation) 6 years ago
Andre Puschmann 86e02921f0 fix regression in RLC base introduced during refactor causing eMBMS to fail 6 years ago
Andre Puschmann 34535c7efb fix RLC AM issues reported by clang-tidy 6 years ago
Andre Puschmann 184539b87d add LCID change API to UE interface, add method to reestablish single RLC bearer 6 years ago
Andre Puschmann 10bc01a7ae add API to change LCID of RLC bearers 6 years ago
Andre Puschmann 91492b87ef add del_bearer for RLC/PDCP 6 years ago
Andre Puschmann 6a2dc8677b remove obsolete header 7 years ago
Andre Puschmann b8438e9cc3 extend PDCP interface to allow non-blocking write of SDUs 7 years ago
Andre Puschmann 8e8fab027b refactor RLC base class 
- add rwlock
- put RLC entities into map
- general cleanup
 7 years ago
Ismael Gomez 589e569ce9
Changes on srsENB mutexing logic to fix general race condition and deadlock issues (#229) 
* fixed some issues with the UL scheduling

* Hack to fix UL scheduler

* minor fix

* Cleaned up code and fixed issue with the update_allocation function

* fixed the console printing in the enb

* log/console fix

* fixed the log print

* added a normalization factor

* RLC: entity uses dynamic instances. Simplified stop/reset/reestablish procedure. Added non-blocking interface

* Limit decimals in metrics stdout

* Changed mutexes to rwlock in RLC/RRC/MAC/PDCP to fix race conditions when removing users

* Fix deadlock bug for MIMO

* Remove headers

* Fix missing unlock causing overflows

* Do not decrease CQI when PUCCH (this is a temporal fix, requires to reduce the maximum MCS)

* Fix mutex unlock in worker

* Configurable RLC tx buffer. Default to 512 for enodeb

* Check NULL SDU in write_sdu()

* Protect RLC objects and tx_queue from being destroyed while using it

* Remove superfluous code

* Disable SIB logging

* Fix block_queue for enb
 7 years ago
yagoda 49c3578f64 introducing embms support in common upper layer functions 7 years ago
Ismael Gomez 62787bdd41 Remove unused include 7 years ago
David Rupprecht 9d71bec7b6 Unified include guards 7 years ago
Paul Sutton 60b059f3cc Adding RLC AM stress test 7 years ago
Ismael Gomez 5c31800ccb Fixed HO with ciphering 7 years ago
Ismael Gomez 9a255b477a Merge branch 'crypto' into mobility_crypto 7 years ago
Paul Sutton 84724d2ab1 NAS-plane encryption working (thanks to David Rupprecht) 7 years ago
Ismael Gomez 408545dab8 X2 (constant NCC) working 7 years ago
Ismael Gomez 5fed766806 fixed UE not reattaching after paging 7 years ago
Andre Puschmann 7ca0988ea3 refactor RLC to use RAT-agnostic config 8 years ago
Andre Puschmann 8dbabb2834 rework bearer/LCID handling 
This is a larger patch that reworks the LCID handling throughout the
code.

- It first moves the RB/LCID mapping out of common.h into the RRC object
  because different RATs may have different mappings.
- It adds a interface to RRC that other objects like RLC/PDCP/etc. may
  use to get the bearer name of a specific LCID.
- The patch also introduces a PDCP config class.
 8 years ago
Ismael Gomez 5e030dc805 renamed SRSUE_ constants to SRSLTE_ 8 years ago
Ismael Gomez 8a367bf825 changed srsue namespace to srslte for all common objects 8 years ago
Ismael Gomez e75daee148 renamed include paths for common objects 8 years ago
Andre Puschmann d079d25b2c rename srslte folder and src subfolder 8 years ago