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36 Commits (45486b6e2c622ab1d47906521662f087816d7d03)

Author SHA1 Message Date
Andre Puschmann 55336665b9 rlc: remove timers and sdu queue length from RLC TM ctor 
timers aren't used in RLC TM, also the default queue length is
fine to be used at all times.
 4 years ago
Andre Puschmann c8b4ba885b rename rlc_tx_queue to byte_buffer_queue 
this data structure will be used by the PDCP layer as well.
 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
Ismael Gomez a1f0f8de35
Add callback to RLC to indicate BSR for TX and reTX queues (used in ENB) (#1361) 5 years ago
Francisco Paisana 3da8464a21 fix compilation issue with lack of override keyword and scoping in fsm 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
Xavier Arteaga e832769ae6 Updated copyright 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 a77dd4e959 Starting to add boiler-plate code to support Discard at RLC. 5 years ago
Andre Puschmann b20f7ba541 refactor RLC UM and add NR receiver 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 5 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. 5 years ago
Andre Puschmann acbe7fabe4 rlc: fix class member initialization 
uninitialized member detected by coverity, now converted all default
initialization to be done in class definition
 5 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
Andre Puschmann 4b01a2e4a0 update copyright notice 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 89df8f1582 unify RLC interface for writing SDUs w/ and w/o blocking 6 years ago
Andre Puschmann 27d3d697df refactor RLC part#2 
- move metrics into entities
- make configure interface return true/false on success/failure
- add own srslte mode type
 6 years ago
Ismael Gomez 005fe87ae9 RLC reestablish to re-enable tx_enabled 6 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
 6 years ago
Andre Puschmann 2fb0dc62a0 refactor config for multicast RLC bearers 7 years ago
yagoda 49c3578f64 introducing embms support in common upper layer functions 7 years ago
Ismael Gomez 040c33497d merged PR#189 and added check for non-empty queue in get size tail 7 years ago
David Rupprecht 9d71bec7b6 Unified include guards 7 years ago
Ismael Gomez 5359c42b46 RLC UM release timer at stop() 7 years ago
Andre Puschmann 7ca0988ea3 refactor RLC to use RAT-agnostic config 7 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