# Study plan for 09.08.2022: Make a table of sub folder + source code names related to OAI DU with short explanation of what the source code does
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**References**
- [Repository](https://gitlab.eurecom.fr/oai/openairinterface5g/-/tree/develop/)
- [OAI 5G RAN PROJECT GROUP](https://openairinterface.org/oai-5g-ran-project/)
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## Table of sub folder.
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* Repository: - [openairinterface5g
\openair2](https://gitlab.eurecom.fr/oai/openairinterface5g/-/tree/develop/openair2)
* Contain: 732 Files, 23 Folders
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|Type|Name|Content|
|---|---|---|
|Directory|COMMON|See [COMMON](#openair2\COMMON)|
|Directory|DOCS|See [DOCS](#openair2\DOCS)|
|Directory|ENB_APP|See [ENB_APP](#openair2\ENB_APP)|

### openair2\COMMON
|Type|Name|Content|
|---|---|---|
|NAS stack|as_message.h|Defines the messages supported by the Access Stratum sublayer protocol (usually RRC and S1AP for E-UTRAN) and functions used to encode and decode|
|NAS stack|commonDef.h|Contains global common definitions|
|NAS stack|f1ap_messages_def.h|F1 message encodeder|
||f1ap_messages_types.h|f1ap message transfer|
||flexran_messages_def.h|handle protobuf message|
||gtpv1_u_messages_def.h||
||gtpv1_u_messages_types.h||
||itti_sim_messages_def.h|brief itti message for itti simulator|
||itti_sim_messages_types.h|brief itti message for itti simulator|
||m2ap_messages_def.h|ITTI LOG messages+ encoder|
||m3ap_messages_types.h||
||mac_messages_def.h|Messages between RRC and MAC layers|
||mac_messages_types.h||
||mac_rlc_primitives.h|primitives for communications between the RLC and MAC sub-layers|
||mac_rrc_primitives.h|communications between the RRC and MAC sub-layers|
||messages_def.h||
||nas_messages_def.h||
||nas_messages_types.h||
|NAS stack|networkDef.h||
||ngap_messages_def.h|Messages for NGAP logging|
||ngap_messages_types.h||
||openair_defs.h|code review comments + re-test|
||pdcp_messages_def.h|Messages between RRC and PDCP layers|
||phy_messages_types.h||
||platform_constants.h|GENERIC ACCESS STRATUM TYPES|
||ral_messages_def.h||
||ral_messages_types.h||
||rlc_messages_def.h|Messages for RLC logging|
||rrc_messages_types.h|Messages for RRC logging|
||rrm_constants.h|CONSTANTS FOR L1/L2/L3 LAYERS|
||rtos_header.h||
||s1ap_messages_def.h|Messages for S1AP logging |
||s1ap_messages_types.h||
||sctp_messages_def.h||
||CTP_MESSAGES_TYPES_H||
||udp_messages_types.h||
||x2ap_messages_def.h|ITTI LOG messages/ENCODER
|
||x2ap_messages_types.h||

#### openair2\DOCS
|Type|Name|Content|
|---|---|---|
|Directory|DOXYGEN|See [DOXYGEN](#openair2\DOCS\DOXYGEN)|
|Directory|TEMPLATES|See [TEMPLATES](#openair2\DOCS\TEMPLATES)|

##### openair2\DOCS\DOXYGEN
|Type|Name|Content|
|---|---|---|
|Directory|images|Task's images|
|Info file|Doxyfile|Project related configuration options|

###### openair2\DOCS\TEMPLATES
|Type|Name|Content|
|---|---|---|
|Directory|CODE|images|
|||Doxyfile(not use)|
|||example_doxy.h(not use)|

###### openair2\ENB_APP
|Folder|Subfolder|Content|
|---|---|---|
|Directory|CONTROL_MODULES|See [CONTROL_MODULES](#openair2\ENB_APP\CONTROL_MODULES)|
|Directory|MESSAGES/V2|[MESSAGES/V2](#openair2\ENB_APP\MESSAGES/V2)|
|Directory|flexran_apps|does not works|
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#### openair2\ENB_APP\CONTROL_MODULES
|Type|Name|Content|
|---|---|---|
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### openair2\ENB_APP\MESSAGES/V2
|Type|Name|Content|
|---|---|---|
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