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srsLTE
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27 Commits

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
 2020-07-13 17:05:28 +02:00
Francisco Paisana 1a9c04bf2f use of task scheduler handle in pdcp 2020-07-13 11:19:25 +01:00
Francisco Paisana f0874b780b add radio_base/null classes 2020-06-18 23:37:26 +01:00
Pedro Alvarez 9c1a7d2cf1 Removed get_bearer_status in PDCP. Renamed get_state/set_state to 
get_bearer_state/set_bearer_state.
 2020-06-18 12:13:57 +01:00
Pedro Alvarez 08578a7331 Switched to use a struct to hold the PDCP entity state variables. Deleted some unecessary setters. 2020-06-18 12:13:57 +01:00
Pedro Alvarez 33567d81db Added interface to get internal PDCP state. 2020-06-18 12:13:57 +01:00
Pedro Alvarez 4093e75237 Starting to add getters and setters of the state in PDCP lte entity. 2020-06-18 12:13:57 +01:00
Pedro Alvarez ad0abe740b Added support to PDCP SN len of 7. Also added a check for valid configs in pdcp entity. 2020-04-22 17:44:00 +02:00
Andre Puschmann 9307a54512 pdcp: adding enable_security_timed() method 
this is an extension to the currently available security
configuration and activation methods provided by PDCP.
The new call allows to specify a Rx and Tx SN after which the
entire security config, i.e. integrity and ciphering, should
be enabled.

this is mainly required for the PDCP entity of the conformance
testing SS but could potentially also be used by the eNB
to enable security for PDCP after sending the SecModeCommand
for example.

the extra call was added to not break the existing API.
 2020-04-09 10:55:13 +02:00
Pedro Alvarez f4d648b26e Removed rx_count state variable from PDCP LTE entity. Updated get_bearer_status(...) acordingly. Added get_last_submitted_rx_count() getter. 2020-04-09 10:55:13 +02:00
Francisco Paisana 30ae2226c1 common interface for stack multiqueue tasks, background tasks and timers 2020-03-31 13:42:06 +01:00
Francisco Paisana 344eaf49ec use logmap in the whole enb and ue 2020-03-25 15:50:30 +00:00
Xavier Arteaga e832769ae6 Updated copyright 2020-03-16 11:26:06 +01:00
Pedro Alvarez 284a0f7b4e Starting to add PDCP LTE unit tests. Test failing for now. 2020-02-20 20:53:27 +01:00
Pedro Alvarez 5f39c79bda Moved some more packing functions to base class. 2020-02-20 20:53:27 +01:00
Pedro Alvarez fdd67c3865 Fix issue in integrity check in PDCP SRBs. Moved some helper functions to the pdcp base class 2020-02-20 20:53:27 +01:00
Pedro Alvarez 965b0ee99b Starting to fix handling of RX SRB PDUs in PDCP. 2020-02-20 20:53:27 +01:00
Francisco Paisana 6b4488d5c1 added sending of enb status transfer from SeNB 2019-12-11 17:41:49 +00:00
Pedro Alvarez 15613465cf Moving some initialization from init function to constructor in the PDCP entities. 2019-11-21 13:18:30 +01:00
Pedro Alvarez 6efa944b5e Removed srslte prefix from pdcp_config_t 2019-07-30 15:01:50 +02:00
Pedro Alvarez f90b69e5f4 More clang-format for PDCP 2019-07-30 15:01:50 +02:00
Pedro Alvarez 491695ab77 Clang-formated PDCP NR PR. 2019-07-30 15:01:50 +02:00
Pedro Alvarez 73e30743d1 Added enum to PDCP config to replace two bools. 2019-07-30 15:01:50 +02:00
Pedro Alvarez 457f35699d Reverted back to a single config structure between PDCP NR and PDCP LTE. 2019-07-30 15:01:50 +02:00
Pedro Alvarez 2449f901f0 Fixed error in setting Kint in pdcp_entity_lte. 2019-07-30 15:01:50 +02:00
Pedro Alvarez 1944bf9a80 Continue to split pdcp_entity_lte and pdcp_entity_nr. Compiling now. 2019-07-30 15:01:50 +02:00
Pedro Alvarez 005d03cb1a Starting to split pdcp_entity into pdcp_entity_lte and pdcp_entity_nr to support NR PDCP 2019-07-30 15:01:50 +02:00