Sending tunnel interface 'up' command to NR UE

Once the LTE UE's tunnel interface with the EPC
is ready to be established, if we are in NSA mode,
we do not want to launch the tunnel interface
from the LTE UE side, but in the NR UE. Via itti_msgs
we send the string containing the tunnel interface
'up' command to the NR UE and bring it up from the NR UE.

openair2/COMMON/as_message.h

@@ -219,6 +219,10 @@ typedef struct kenb_refresh_req_s {
   Byte_t kenb[32];
 } kenb_refresh_req_t;
 
+typedef struct nsa_oai_tun_nsa_s {
+  uint8_t buffer[500]; //Melissa TODO
+} nas_oai_tun_nsa_t;
+
 /*
  * NAS->AS - Cell Information request
  * NAS request AS to search for a suitable cell belonging to the selected

openair2/COMMON/rrc_messages_def.h

@@ -65,6 +65,8 @@ MESSAGE_DEF(NAS_UPLINK_DATA_REQ,        MESSAGE_PRIORITY_MED,       NasUlDataReq
 
 MESSAGE_DEF(NAS_RAB_ESTABLI_RSP,        MESSAGE_PRIORITY_MED,       NasRabEstRsp,               nas_rab_est_rsp)
 
+MESSAGE_DEF(NAS_OAI_TUN_NSA,            MESSAGE_PRIORITY_MED,       NasOaiTunNsa,               nas_oai_tun_nsa)
+
 // UE: RRC -> NAS messages
 MESSAGE_DEF(NAS_CELL_SELECTION_CNF,     MESSAGE_PRIORITY_MED,       NasCellSelectionCnf,        nas_cell_selection_cnf)
 MESSAGE_DEF(NAS_CELL_SELECTION_IND,     MESSAGE_PRIORITY_MED,       NasCellSelectionInd,        nas_cell_selection_ind)

openair2/COMMON/rrc_messages_types.h

@@ -89,6 +89,8 @@
 
 #define RLC_SDU_INDICATION(mSGpTR)      (mSGpTR)->ittiMsg.rlc_sdu_indication
 
+#define NAS_OAI_TUN_NSA(mSGpTR)         (mSGpTR)->ittiMsg.nas_oai_tun_nsa
+
 //-------------------------------------------------------------------------------------------//
 typedef struct RrcStateInd_s {
   Rrc_State_t     state;
@@ -420,6 +422,8 @@ typedef ul_info_transfer_req_t  NasUlDataReq;
 
 typedef rab_establish_rsp_t     NasRabEstRsp;
 
+typedef nas_oai_tun_nsa_t       NasOaiTunNsa;
+
 // UE: RRC -> NAS messages
 typedef cell_info_cnf_t         NasCellSelectionCnf;
 typedef cell_info_ind_t         NasCellSelectionInd;