Robert Schmidt
89b776925d
Prior to this commit, the RAN function for KPM is leaking memory: it allocates using calloc() but never frees it. The fix consists of not allocating this memory on the heap in the first place, but on the stack. Therefore, there are changes to pass in a pointer to various functions to the structure on the stack, instead of passing the "container" for the heap memory by value. Further, the MAC was allocating an excessive amount of memory (N times sizeof(NR_UE_info_t)). Instead of copying the entire struct, the present code stores a pointer to the MAC UE container (NR_UE_info_t *). For the RRC, there is a similar simplification that consists in not storing the entire struct f1_ue_data_t (which is not required), but only the RRC UE ID. Note that both MAC and RRC might suffer from race conditions. For the MAC, we should lock the scheduler for the time we read statistics. For the RRC, the problem is more delicate as no mutex exists; the RRC assumes everything is executed synchronously in the ITTI task loop. In both cases, this commit does not address this problem
OpenAirInterface License
It is distributed under OAI Public License V1.1.
The license information is distributed under LICENSE file in the same directory.
Please see NOTICE file for third party software that is included in the sources.
Where to Start
Not all information is available in a central place, and information for specific sub-systems might be available in the corresponding sub-directories. To find all READMEs, this command might be handy:
find . -iname "readme*"
RAN repository structure
The OpenAirInterface (OAI) software is composed of the following parts:
openairinterface5g
├── charts
├── ci-scripts : Meta-scripts used by the OSA CI process. Contains also configuration files used day-to-day by CI.
├── CMakeLists.txt : Top-level CMakeLists.txt for building
├── cmake_targets : Build utilities to compile (simulation, emulation and real-time platforms), and generated build files.
├── common : Some common OAI utilities, some other tools can be found at openair2/UTILS.
├── doc : Documentation
├── docker : Dockerfiles to build for Ubuntu and RHEL
├── executables : Top-level executable source files (gNB, eNB, ...)
├── maketags : Script to generate emacs tags.
├── nfapi : (n)FAPI code for MAC-PHY interface
├── openair1 : 3GPP LTE Rel-10/12 PHY layer / 3GPP NR Rel-15 layer. A local Readme file provides more details.
├── openair2 : 3GPP LTE Rel-10 RLC/MAC/PDCP/RRC/X2AP + LTE Rel-14 M2AP implementation. Also 3GPP NR Rel-15 RLC/MAC/PDCP/RRC/X2AP.
├── openair3 : 3GPP LTE Rel10 for S1AP, NAS GTPV1-U for both ENB and UE.
├── openshift : OpenShift helm charts for some deployment options of OAI
├── radio : Drivers for various radios such as USRP, AW2S, RFsim, ...
└── targets : Some configuration files; only historical relevance, and might be deleted in the future