Merge remote-tracking branch 'origin/simplify-pdu-session-management' into integration_2023_w18b

executables/nr-cuup.c

@@ -111,7 +111,7 @@ f1ap_cudu_inst_t *getCxt(F1_t isCU, instance_t instanceP)
   return NULL;
 }
 
-void fill_DRB_configList(const protocol_ctxt_t *const ctxt_pP, rrc_gNB_ue_context_t *ue_context_pP)
+void fill_DRB_configList(const protocol_ctxt_t *const ctxt_pP, rrc_gNB_ue_context_t *ue_context_pP, uint8_t xid)
 {
   abort();
 }

openair2/COMMON/ngap_messages_types.h

@@ -263,17 +263,6 @@ typedef enum pdu_session_type_e {
   PDUSessionType_unstructured = 4
 }pdu_session_type_t;
 
-typedef struct ngap_transport_layer_addr_s {
-  /* Length of the transport layer address buffer in bits. NGAP layer received a
-   * bit string<1..160> containing one of the following addresses: ipv4,
-   * ipv6, or ipv4 and ipv6. The layer doesn't interpret the buffer but
-   * silently forward it to NG-U.
-   */
-  uint8_t pdu_session_type;
-  uint8_t length;
-  uint8_t buffer[20]; // in network byte order
-} ngap_transport_layer_addr_t;
-
 typedef struct pdusession_s {
   /* Unique pdusession_id for the UE. */
   int pdusession_id;
@@ -283,11 +272,16 @@ typedef struct pdusession_s {
   /* Quality of service for this pdusession */
   pdusession_level_qos_parameter_t qos[QOSFLOW_MAX_VALUE];
   /* The transport layer address for the IP packets */
-  ngap_transport_layer_addr_t upf_addr;
+  pdu_session_type_t pdu_session_type;
+  transport_layer_addr_t upf_addr;
   /* S-GW Tunnel endpoint identifier */
   uint32_t gtp_teid;
   /* Stores the DRB ID of the DRBs used by this PDU Session */
   uint8_t used_drbs[NGAP_MAX_DRBS_PER_UE];
+  uint32_t gNB_teid_N3;
+  transport_layer_addr_t gNB_addr_N3;
+  uint32_t UPF_teid_N3;
+  transport_layer_addr_t UPF_addr_N3;
 } pdusession_t;
 
 typedef enum pdusession_qosflow_mapping_ind_e{
@@ -306,7 +300,8 @@ typedef struct pdusession_setup_s {
   uint8_t pdusession_id;
 
   /* The transport layer address for the IP packets */
-  ngap_transport_layer_addr_t gNB_addr;
+  uint8_t pdu_session_type;
+  transport_layer_addr_t gNB_addr;
 
   /* UPF Tunnel endpoint identifier */
   uint32_t gtp_teid;
@@ -323,7 +318,8 @@ typedef struct pdusession_tobeswitched_s {
   uint8_t pdusession_id;
 
   /* The transport layer address for the IP packets */
-  ngap_transport_layer_addr_t upf_addr;
+  uint8_t pdu_session_type;
+  transport_layer_addr_t upf_addr;
 
   /* S-GW Tunnel endpoint identifier */
   uint32_t gtp_teid;

openair2/RRC/LTE/MESSAGES/asn1_msg.c

@@ -3808,7 +3808,6 @@ do_RRCConnectionReestablishment(
   LTE_DL_CCCH_Message_t dl_ccch_msg;
   LTE_RRCConnectionReestablishment_t *rrcConnectionReestablishment = NULL;
   int i = 0;
-  ue_context_pP->ue_context.reestablishment_xid = Transaction_id;
   LTE_SRB_ToAddModList_t **SRB_configList2 = NULL;
   SRB_configList2 = &ue_context_pP->ue_context.SRB_configList2[Transaction_id];
 

openair2/RRC/NR/MESSAGES/asn1_msg.c

@@ -1139,7 +1139,6 @@ int do_RRCReestablishment(const protocol_ctxt_t *const ctxt_pP,
   struct NR_SRB_ToAddMod *SRB2_config = NULL;
   NR_DL_DCCH_Message_t dl_dcch_msg = {0};
   NR_RRCReestablishment_t *rrcReestablishment = NULL;
-  ue_context_pP->ue_context.reestablishment_xid = Transaction_id;
   NR_SRB_ToAddModList_t **SRB_configList2 = NULL;
   SRB_configList2 = &ue_context_pP->ue_context.SRB_configList2[Transaction_id];
 

openair2/RRC/NR/cucp_cuup_direct.c

@@ -179,13 +179,14 @@ static NR_SRB_ToAddModList_t **generateSRB2_confList(gNB_RRC_UE_t *ue, NR_SRB_To
 
   return SRB_configList2;
 }
-static void cucp_cuup_bearer_context_setup_direct(e1ap_bearer_setup_req_t *const req, instance_t instance) {
+static void cucp_cuup_bearer_context_setup_direct(e1ap_bearer_setup_req_t *const req, instance_t instance, uint8_t xid)
+{
   rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[instance], req->rnti);
   gNB_RRC_UE_t *UE = &ue_context_p->ue_context;
   protocol_ctxt_t ctxt = {0};
   PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, GNB_FLAG_YES, UE->rnti, 0, 0, 0);
 
-  fill_DRB_configList(&ctxt, ue_context_p);
+  fill_DRB_configList(&ctxt, ue_context_p, xid);
 
   gNB_RRC_INST *rrc = RC.nrrrc[ctxt.module_id];
   // Fixme: xid not random, but almost!
@@ -208,7 +209,7 @@ static void cucp_cuup_bearer_context_setup_direct(e1ap_bearer_setup_req_t *const
   }
 }
 
-static void cucp_cuup_bearer_context_mod_direct(e1ap_bearer_setup_req_t *const req, instance_t instance) {
+static void cucp_cuup_bearer_context_mod_direct(e1ap_bearer_setup_req_t *const req, instance_t instance, uint8_t xid) {
   instance_t gtpInst = getCxt(CUtype, instance)->gtpInst;
   CU_update_UP_DL_tunnel(req, gtpInst, req->rnti);
 }

openair2/RRC/NR/cucp_cuup_e1ap.c

@@ -35,12 +35,13 @@
 
 extern RAN_CONTEXT_t RC;
 
-static void cucp_cuup_bearer_context_setup_e1ap(e1ap_bearer_setup_req_t *const req, instance_t instance) {
+static void cucp_cuup_bearer_context_setup_e1ap(e1ap_bearer_setup_req_t *const req, instance_t instance, uint8_t xid)
+{
   rrc_gNB_ue_context_t *ue_context_p = rrc_gNB_get_ue_context_by_rnti(RC.nrrrc[instance], req->rnti);
   protocol_ctxt_t ctxt = {0};
   PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, GNB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0, 0);
 
-  fill_DRB_configList(&ctxt, ue_context_p);
+  fill_DRB_configList(&ctxt, ue_context_p, xid);
   MessageDef *msg_p = itti_alloc_new_message(TASK_CUCP_E1, instance, E1AP_BEARER_CONTEXT_SETUP_REQ);
   e1ap_bearer_setup_req_t *bearer_req = &E1AP_BEARER_CONTEXT_SETUP_REQ(msg_p);
   memcpy(bearer_req, req, sizeof(e1ap_bearer_setup_req_t));
@@ -48,7 +49,8 @@ static void cucp_cuup_bearer_context_setup_e1ap(e1ap_bearer_setup_req_t *const r
   itti_send_msg_to_task (TASK_CUCP_E1, instance, msg_p);
 }
 
-static void cucp_cuup_bearer_context_mod_e1ap(e1ap_bearer_setup_req_t *const req, instance_t instance) {
+static void cucp_cuup_bearer_context_mod_e1ap(e1ap_bearer_setup_req_t *const req, instance_t instance, uint8_t xid)
+{
   MessageDef *msg = itti_alloc_new_message(TASK_CUCP_E1, instance, E1AP_BEARER_CONTEXT_MODIFICATION_REQ);
   e1ap_bearer_setup_req_t *req_msg = &E1AP_BEARER_CONTEXT_SETUP_REQ(msg);
   memcpy(req_msg, req, sizeof(*req));

openair2/RRC/NR/cucp_cuup_if.h

@@ -27,7 +27,7 @@
 
 struct e1ap_bearer_setup_req_s;
 struct e1ap_bearer_setup_resp_s;
-typedef void (*cucp_cuup_bearer_context_setup_func_t)(struct e1ap_bearer_setup_req_s *const req, instance_t instance);
+typedef void (*cucp_cuup_bearer_context_setup_func_t)(struct e1ap_bearer_setup_req_s *const req, instance_t instance, uint8_t xid);
 
 struct gNB_RRC_INST_s;
 void cucp_cuup_message_transfer_direct_init(struct gNB_RRC_INST_s *rrc);

openair2/RRC/NR/nr_rrc_defs.h

@@ -128,7 +128,7 @@ typedef enum UE_STATE_NR_e {
 #define NO_SECURITY_MODE                              0x20
 
 /* TS 36.331: RRC-TransactionIdentifier ::= INTEGER (0..3) */
-#define NR_RRC_TRANSACTION_IDENTIFIER_NUMBER             3
+#define NR_RRC_TRANSACTION_IDENTIFIER_NUMBER 4
 
 typedef struct {
   unsigned short                                      transport_block_size;      /*!< \brief Minimum PDU size in bytes provided by RLC to MAC layer interface */
@@ -260,12 +260,13 @@ typedef enum pdu_session_satus_e {
   PDU_SESSION_STATUS_REESTABLISHED, // after HO
   PDU_SESSION_STATUS_TOMODIFY, // ENDC NSA
   PDU_SESSION_STATUS_FAILED,
-  PDU_SESSION_STATUS_TORELEASE  // to release DRB between eNB and UE
+  PDU_SESSION_STATUS_TORELEASE, // to release DRB between eNB and UE
+  PDU_SESSION_STATUS_RELEASED
 } pdu_session_status_t;
 
 typedef struct pdu_session_param_s {
   pdusession_t param;
-  uint8_t status;
+  pdu_session_status_t status;
   uint8_t xid; // transaction_id
   ngap_Cause_t cause;
   uint8_t cause_value;
@@ -305,6 +306,19 @@ typedef struct drb_s {
   } pdcp_config;
 } drb_t;
 
+typedef enum {
+  RRC_FIRST_RECONF,
+  RRC_SETUP,
+  RRC_SETUP_FOR_REESTABLISHMENT,
+  RRC_REESTABLISH,
+  RRC_REESTABLISH_COMPLETE,
+  RRC_DEFAULT_RECONF,
+  RRC_DEDICATED_RECONF,
+  RRC_PDUSESSION_ESTABLISH,
+  RRC_PDUSESSION_MODIFY,
+  RRC_PDUSESSION_RELEASE
+} rrc_action_t;
+
 typedef struct gNB_RRC_UE_s {
   uint8_t                            primaryCC_id;
   NR_SRB_ToAddModList_t             *SRB_configList;
@@ -369,38 +383,20 @@ typedef struct gNB_RRC_UE_s {
   nr_rrc_guami_t                     ue_guami;
 
   ngap_security_capabilities_t       security_capabilities;
-
-  /* Total number of e_rab already setup in the list */
-  uint8_t                           setup_e_rabs;
-  /* Number of e_rab to be setup in the list */
+  //NSA block
+  /* Number of NSA e_rab */
   uint8_t                            nb_of_e_rabs;
-  /* Number of e_rab to be modified in the list */
-  uint8_t                            nb_of_modify_e_rabs;
-  uint8_t                            nb_of_failed_e_rabs;
-  nr_e_rab_param_t                   modify_e_rab[NB_RB_MAX];//[S1AP_MAX_E_RAB];
-  /* Number of pdu session managed for the ue */
-  uint8_t                            nb_of_pdusessions;
-  /* Number of e_rab to be modified in the list */
-  uint8_t                            nb_of_modify_pdusessions;
-  uint8_t                            nb_of_failed_pdusessions;
-  rrc_pdu_session_param_t modify_pdusession[NR_NB_RB_MAX];
-  /* list of e_rab to be setup by RRC layers */
   /* list of pdu session to be setup by RRC layers */
   nr_e_rab_param_t                   e_rab[NB_RB_MAX];//[S1AP_MAX_E_RAB];
-  rrc_pdu_session_param_t pduSession[NGAP_MAX_PDU_SESSION];
-  //release e_rabs
-  uint8_t                            nb_release_of_e_rabs;
-  e_rab_failed_t                     e_rabs_release_failed[S1AP_MAX_E_RAB];
-  uint8_t                            nb_release_of_pdusessions;
-  pdusession_failed_t                pdusessions_release_failed[NGAP_MAX_PDUSESSION];
-  // LG: For GTPV1 TUNNELS
-  uint32_t                           gnb_gtp_teid[S1AP_MAX_E_RAB];
-  transport_layer_addr_t             gnb_gtp_addrs[S1AP_MAX_E_RAB];
-  rb_id_t                            gnb_gtp_ebi[S1AP_MAX_E_RAB];
-  rb_id_t                            gnb_gtp_psi[S1AP_MAX_E_RAB];
-  //GTPV1 F1-U TUNNELS
-  uint32_t                           incoming_teid[S1AP_MAX_E_RAB];
+  uint32_t                           nsa_gtp_teid[S1AP_MAX_E_RAB];
+  transport_layer_addr_t             nsa_gtp_addrs[S1AP_MAX_E_RAB];
+  rb_id_t                            nsa_gtp_ebi[S1AP_MAX_E_RAB];
+  rb_id_t                            nsa_gtp_psi[S1AP_MAX_E_RAB];
 
+  //SA block
+  int nb_of_pdusessions;
+  rrc_pdu_session_param_t pduSession[NGAP_MAX_PDU_SESSION];
+  rrc_action_t xids[NR_RRC_TRANSACTION_IDENTIFIER_NUMBER];
   uint32_t                           ul_failure_timer;
   uint32_t                           ue_release_timer;
   uint32_t                           ue_release_timer_thres;
@@ -413,10 +409,7 @@ typedef struct gNB_RRC_UE_s {
   uint32_t                           ue_reestablishment_timer;
   uint32_t                           ue_reestablishment_timer_thres;
   uint8_t e_rab_release_command_flag;
-  uint8_t                            pdu_session_release_command_flag;
-  uint8_t                            established_pdu_sessions_flag;
   uint32_t ue_rrc_inactivity_timer;
-  int8_t                             reestablishment_xid;
   uint32_t                           ue_reestablishment_counter;
   uint32_t                           ue_reconfiguration_after_reestablishment_counter;
   NR_CellGroupId_t                                      cellGroupId;

openair2/RRC/NR/nr_rrc_proto.h

@@ -164,8 +164,7 @@ void ue_cxt_mod_send_e1ap(MessageDef *msg,
 void ue_cxt_mod_direct(MessageDef *msg,
                        instance_t instance);
 
-void fill_DRB_configList(const protocol_ctxt_t *const ctxt_pP,
-                         rrc_gNB_ue_context_t *ue_context_pP);
+void fill_DRB_configList(const protocol_ctxt_t *const ctxt_pP, rrc_gNB_ue_context_t *ue_context_pP, uint8_t xid);
 
 void prepare_and_send_ue_context_modification_f1(rrc_gNB_ue_context_t *ue_context_p,
                                                  e1ap_bearer_setup_resp_t *e1ap_resp);

openair2/RRC/NR/rrc_gNB_GTPV1U.c

@@ -58,14 +58,14 @@ int rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(const protocol_ctxt_t *const ctxt_
     return -1;
   }
   for (int i = 0; i < create_tunnel_resp_pP->num_tunnels; i++) {
-    ue_context_p->ue_context.gnb_gtp_teid[inde_list[i]] = create_tunnel_resp_pP->enb_S1u_teid[i];
-    ue_context_p->ue_context.gnb_gtp_addrs[inde_list[i]] = create_tunnel_resp_pP->enb_addr;
-    ue_context_p->ue_context.gnb_gtp_ebi[inde_list[i]] = create_tunnel_resp_pP->eps_bearer_id[i];
+    ue_context_p->ue_context.nsa_gtp_teid[inde_list[i]] = create_tunnel_resp_pP->enb_S1u_teid[i];
+    ue_context_p->ue_context.nsa_gtp_addrs[inde_list[i]] = create_tunnel_resp_pP->enb_addr;
+    ue_context_p->ue_context.nsa_gtp_ebi[inde_list[i]] = create_tunnel_resp_pP->eps_bearer_id[i];
     LOG_I(RRC,
           PROTOCOL_RRC_CTXT_UE_FMT " rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP tunnel (%u, %u) bearer UE context index %u, msg index %u, id %u, gtp addr len %d \n",
           PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
           create_tunnel_resp_pP->enb_S1u_teid[i],
-          ue_context_p->ue_context.gnb_gtp_teid[inde_list[i]],
+          ue_context_p->ue_context.nsa_gtp_teid[inde_list[i]],
           inde_list[i],
           i,
           create_tunnel_resp_pP->eps_bearer_id[i],
@@ -90,14 +90,14 @@ int nr_rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(const protocol_ctxt_t *const ct
   }
 
   for (int i = 0; i < create_tunnel_resp_pP->num_tunnels; i++) {
-    ue_context_p->ue_context.gnb_gtp_teid[i + offset] = create_tunnel_resp_pP->gnb_NGu_teid[i];
-    ue_context_p->ue_context.gnb_gtp_addrs[i + offset] = create_tunnel_resp_pP->gnb_addr;
-    ue_context_p->ue_context.gnb_gtp_psi[i + offset] = create_tunnel_resp_pP->pdusession_id[i];
+    ue_context_p->ue_context.pduSession[i + offset].param.gNB_teid_N3 = create_tunnel_resp_pP->gnb_NGu_teid[i];
+    ue_context_p->ue_context.pduSession[i + offset].param.gNB_addr_N3 = create_tunnel_resp_pP->gnb_addr;
+    AssertFatal(ue_context_p->ue_context.pduSession[i + offset].param.pdusession_id == create_tunnel_resp_pP->pdusession_id[i], "");
     LOG_I(NR_RRC,
-          PROTOCOL_NR_RRC_CTXT_UE_FMT " nr_rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP tunnel (%u, %u) bearer UE context index %u, id %u, gtp addr len %d \n",
+          PROTOCOL_NR_RRC_CTXT_UE_FMT
+          " nr_rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP tunnel (%u) bearer UE context index %u, id %u, gtp addr len %d \n",
           PROTOCOL_NR_RRC_CTXT_UE_ARGS(ctxt_pP),
           create_tunnel_resp_pP->gnb_NGu_teid[i],
-          ue_context_p->ue_context.gnb_gtp_teid[i + offset],
           i,
           create_tunnel_resp_pP->pdusession_id[i],
           create_tunnel_resp_pP->gnb_addr.length);

openair2/RRC/NR/rrc_gNB_NGAP.h

@@ -96,12 +96,9 @@ int rrc_gNB_process_NGAP_UE_CONTEXT_RELEASE_COMMAND(MessageDef *msg_p, instance_
 
 void rrc_gNB_send_NGAP_UE_CONTEXT_RELEASE_COMPLETE(instance_t instance, uint32_t gNB_ue_ngap_id);
 
-void
-rrc_gNB_send_NGAP_UE_CAPABILITIES_IND(
-  const protocol_ctxt_t    *const ctxt_pP,
+void rrc_gNB_send_NGAP_UE_CAPABILITIES_IND(const protocol_ctxt_t *const ctxt_pP,
                                            rrc_gNB_ue_context_t *const ue_context_pP,
-  NR_UL_DCCH_Message_t     *const ul_dcch_msg
-);
+                                           const NR_UECapabilityInformation_t *const ue_cap_info);
 
 int rrc_gNB_process_NGAP_PDUSESSION_RELEASE_COMMAND(MessageDef *msg_p, instance_t instance);
 

openair2/RRC/NR/rrc_gNB_UE_context.c

@@ -68,11 +68,8 @@ rrc_gNB_ue_context_t *rrc_gNB_allocate_new_ue_context(gNB_RRC_INST *rrc_instance
   }
   new_p->ue_context.gNB_ue_ngap_id = uid_linear_allocator_new(&rrc_instance_pP->uid_allocator);
 
-  for(int i = 0; i < NB_RB_MAX; i++) {
-    new_p->ue_context.e_rab[i].xid = -1;
+  for(int i = 0; i < NB_RB_MAX; i++)
     new_p->ue_context.pduSession[i].xid = -1;
-    new_p->ue_context.modify_e_rab[i].xid = -1;
-  }
 
   LOG_I(NR_RRC, "Returning new RRC UE context RRC ue id: %d\n", new_p->ue_context.gNB_ue_ngap_id);
   return(new_p);

openair2/RRC/NR/rrc_gNB_nsa.c

@@ -411,11 +411,11 @@ void rrc_remove_nsa_user(gNB_RRC_INST *rrc, int rnti) {
   tmp.from_gnb=1;
   LOG_D(RRC, "ue_context->ue_context.nb_of_e_rabs %d will be deleted for rnti %d\n", ue_context->ue_context.nb_of_e_rabs, rnti);
   for (e_rab = 0; e_rab < ue_context->ue_context.nb_of_e_rabs; e_rab++) {
-    tmp.eps_bearer_id[tmp.num_erab++]= ue_context->ue_context.gnb_gtp_ebi[e_rab];
+    tmp.eps_bearer_id[tmp.num_erab++]= ue_context->ue_context.nsa_gtp_ebi[e_rab];
     // erase data
-    ue_context->ue_context.gnb_gtp_teid[e_rab] = 0;
-    memset(&ue_context->ue_context.gnb_gtp_addrs[e_rab], 0, sizeof(ue_context->ue_context.gnb_gtp_addrs[e_rab]));
-    ue_context->ue_context.gnb_gtp_ebi[e_rab] = 0;
+    ue_context->ue_context.nsa_gtp_teid[e_rab] = 0;
+    memset(&ue_context->ue_context.nsa_gtp_addrs[e_rab], 0, sizeof(ue_context->ue_context.nsa_gtp_addrs[e_rab]));
+    ue_context->ue_context.nsa_gtp_ebi[e_rab] = 0;
   }
   gtpv1u_delete_s1u_tunnel(rrc->module_id,  &tmp);
   /* remove context */

openair3/NGAP/ngap_gNB_nas_procedures.c

@@ -58,7 +58,7 @@ static void allocCopy(OCTET_STRING_t *out, ngap_pdu_t in)
   out->size = in.length;
 }
 
-static void allocAddrCopy(BIT_STRING_t *out, ngap_transport_layer_addr_t in)
+static void allocAddrCopy(BIT_STRING_t *out, transport_layer_addr_t in)
 {
   if (in.length) {
     out->buf = malloc(in.length);

openair3/ocp-gtpu/gtp_itf.cpp

@@ -762,6 +762,7 @@ int gtpv1u_create_ngu_tunnel(const instance_t instance,
     create_tunnel_resp->gnb_NGu_teid[i]=teid;
     memcpy(create_tunnel_resp->gnb_addr.buffer,addr,sizeof(addr));
     create_tunnel_resp->gnb_addr.length= sizeof(addr);
+    create_tunnel_resp->pdusession_id[i] = create_tunnel_req->pdusession_id[i];
   }
 
   return !GTPNOK;