add smf_ngap - containing all ngap-releated functions/polish the code

etc/smf.conf

@@ -49,7 +49,7 @@ SMF =
             #SCHED_POLICY = "SCHED_FIFO"; # Values in { SCHED_OTHER, SCHED_IDLE, SCHED_BATCH, SCHED_FIFO, SCHED_RR }
             #SCHED_PRIORITY = 84;
         #};
-        #PGW_APP_SCHED_PARAMS :
+        #SMF_APP_SCHED_PARAMS :
         #{
             #CPU_ID       = 1;
             #SCHED_POLICY = "SCHED_FIFO"; # Values in { SCHED_OTHER, SCHED_IDLE, SCHED_BATCH, SCHED_FIFO, SCHED_RR }

src/api-server/api/SMContextsCollectionApi.cpp

@@ -10,6 +10,27 @@
  * Do not edit the class manually.
  */
 
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
 #include "SMContextsCollectionApi.h"
 #include "logger.hpp"
 #include "Helpers.h"
@@ -133,9 +154,8 @@ void SMContextsCollectionApi::setupRoutes() {
 
 void SMContextsCollectionApi::post_sm_contexts_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
 
-	// Getting the body param
-
-	Logger::smf_api_server().debug("[SMF API] Received a SM context create request %s",request.body().c_str());
+	Logger::smf_api_server().info("Received a SM context create request from AMF");
+	Logger::smf_api_server().debug("Request body: %s\n",request.body().c_str());
 	SmContextMessage smContextMessage;
 	SmContextCreateData smContextCreateData;
 
@@ -151,15 +171,18 @@ void SMContextsCollectionApi::post_sm_contexts_handler(const Pistache::Rest::Req
 	g_callbacks.on_body_end = &on_body_end;
 
 	multipartparser parser;
-
 	init_globals();
 	multipartparser_init(&parser, BOUNDARY);
+	if ((multipartparser_execute(&parser, &g_callbacks, request.body().c_str(), strlen(request.body().c_str())) != strlen(request.body().c_str())) or (!g_body_begin_called)){
+		response.send(Pistache::Http::Code::Bad_Request, "");
+		return;
+	}
 
-	assert(multipartparser_execute(&parser, &g_callbacks, request.body().c_str(), strlen(request.body().c_str())) == strlen(request.body().c_str()));
-	assert(g_body_begin_called);
-
-	//at least 2 parts for Json data and N1  (+ N2)
-	assert(g_parts.size() >= 2);
+	//at least 2 parts for Json data and N1 (+ N2)
+	if (g_parts.size() < 2){
+		response.send(Pistache::Http::Code::Bad_Request, "");
+		return;
+	}
 	part p0 = g_parts.front(); g_parts.pop_front();
 	Logger::smf_api_server().debug("Request body, part 1: \n%s", p0.body.c_str());
 	part p1 = g_parts.front(); g_parts.pop_front();
@@ -171,7 +194,6 @@ void SMContextsCollectionApi::post_sm_contexts_handler(const Pistache::Rest::Req
 
 	//step 2. process the request
 	try {
-		//nlohmann::json::parse(p0.body.c_str()).get_to(smContextMessage);
 		nlohmann::json::parse(p0.body.c_str()).get_to(smContextCreateData);
 		smContextMessage.setJsonData(smContextCreateData);
 		smContextMessage.setBinaryDataN1SmMessage(p1.body.c_str());

src/api-server/impl/IndividualSMContextApiImpl.cpp

@@ -10,10 +10,29 @@
 * Do not edit the class manually.
 */
 
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+
 #include "IndividualSMContextApiImpl.h"
-extern "C" {
-#include "Ngap_NGAP-PDU.h"
-}
 namespace oai {
 namespace smf_server {
 namespace api {
@@ -36,37 +55,19 @@ void IndividualSMContextApiImpl::retrieve_sm_context(const std::string &smContex
 
 void IndividualSMContextApiImpl::update_sm_context(const std::string &smContextRef, const SmContextUpdateData &smContextUpdateData, Pistache::Http::ResponseWriter &response) {
 	//handle Nsmf_PDUSession_UpdateSMContext Request
-	Logger::smf_api_server().info("update_sm_contexts...");
+	Logger::smf_api_server().info("Received a PDUSession_UpdateSMContext Request from AMF.");
 	//Get the SmContextUpdateData from this message and process in smf_app
 	smf::pdu_session_update_sm_context_request sm_context_req_msg = {};
 
-	//decode NGAP message and assign the necessary informations to pdu_session_update_sm_context_request
-	//and pass this message to SMF to handle this message
-
-	Ngap_NGAP_PDU_t decoded_ngap_msg = {};
-
-
 	std::string n2_sm_information = (smContextUpdateData.getN2SmInfo()).getContentId();
-
 	std::string n2_sm_msg_hex;
 	m_smf_app->convert_string_2_hex(n2_sm_information, n2_sm_msg_hex);
 	Logger::smf_api_server().debug("smContextMessage, n2 sm information %s",n2_sm_information.c_str());
 
 	std::string n2_sm_info_type = smContextUpdateData.getN2SmInfoType();
-
 	sm_context_req_msg.set_n2_sm_information(n2_sm_msg_hex);
 	sm_context_req_msg.set_n2_sm_info_type(n2_sm_info_type);
 
-
-
-	/*
-    // do it from SMF_APP
-	int decoder_rc = m_smf_app->decode_ngap_message(decoded_ngap_msg, n2_sm_msg_hex);
-
-	if (decoder_rc != RETURNok) {
-		//TODO: error, should send reply to AMF with error code!!
-	}
-	 */
 	//Step 2. TODO: initialize necessary values for sm context req from smContextUpdateData
 
 	//Step 3. Handle the itti_n11_update_sm_context_request message in smf_app
@@ -76,7 +77,6 @@ void IndividualSMContextApiImpl::update_sm_context(const std::string &smContextR
 	m_smf_app->handle_amf_msg(itti_msg);
 
 
-
 }
 
 }

src/api-server/impl/SMContextsCollectionApiImpl.cpp

@@ -10,18 +10,34 @@
  * Do not edit the class manually.
  */
 
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+
 #include "SMContextsCollectionApiImpl.h"
 #include "logger.hpp"
 #include "smf_msg.hpp"
 #include "itti_msg_n11.hpp"
 #include "3gpp_29.502.h"
 
-extern "C" {
-#include "nas_message.h"
-#include "mmData.h"
-#include "nas_sm_encode_to_json.h"
-}
-
 namespace oai {
 namespace smf_server {
 namespace api {
@@ -35,13 +51,11 @@ SMContextsCollectionApiImpl::SMContextsCollectionApiImpl(std::shared_ptr<Pistach
 
 void SMContextsCollectionApiImpl::post_sm_contexts(const SmContextMessage &smContextMessage, Pistache::Http::ResponseWriter &response) {
 
-	Logger::smf_api_server().info("[SMF API] Process SmContextMessage ...");
+	Logger::smf_api_server().info("Process SmContextMessage ...");
 
-	//decode NAS message and assign the necessary informations to smf::pdu_session_create_sm_context_request
+	//Assign the necessary informations to smf::pdu_session_create_sm_context_request
 	//and pass this message to SMF to handle this message
-
-	nas_message_t	decoded_nas_msg;
-	memset (&decoded_nas_msg, 0, sizeof (nas_message_t));
+	//decode NAS should be done in SMF APP
 
 	SmContextCreateData smContextCreateData = smContextMessage.getJsonData();
 	std::string n1_sm_msg = smContextMessage.getBinaryDataN1SmMessage();
@@ -49,44 +63,12 @@ void SMContextsCollectionApiImpl::post_sm_contexts(const SmContextMessage &smCon
 	m_smf_app->convert_string_2_hex(n1_sm_msg, n1_sm_msg_hex);
 	Logger::smf_api_server().debug("smContextMessage, N1 SM message: %s",n1_sm_msg.c_str());
 
-	//Step1. Decode N1 SM container into decoded nas msg
-	int decoder_rc = m_smf_app->decode_nas_message_n1_sm_container(decoded_nas_msg, n1_sm_msg_hex);
-
-	if (decoder_rc != RETURNok) {
-		//error, should send reply to AMF with error code!!
-		Logger::smf_api_server().warn("N1 SM container cannot be decoded correctly!\n");
-		SmContextCreateError smContextCreateError;
-		ProblemDetails problem_details;
-		RefToBinaryData binary_data;
-		std::string n1_container;
-
-		problem_details.setCause(pdu_session_application_error_e2str[PDU_SESSION_APPLICATION_ERROR_N1_SM_ERROR]);
-		smContextCreateError.setError(problem_details);
-
-		//PDU Session Establishment Reject
-		//24.501: response with a 5GSM STATUS message including cause "#95 Semantically incorrect message"
-		m_smf_app->create_n1_sm_container(PDU_SESSION_ESTABLISHMENT_REJECT, n1_container, 95); //TODO: should define 5GSM cause in 24.501
-		binary_data.setContentId(n1_container);
-		smContextCreateError.setN1SmMsg(binary_data);
-		//Send response to AMF
-		nlohmann::json jsonData;
-		to_json(jsonData, smContextCreateError);
-		std::string resBody = jsonData.dump();
-		//httpResponse.headers().add<Pistache::Http::Header::Location>(url);
-		response.send(Pistache::Http::Code::Forbidden, resBody);
-		return;
-	}
-
-	Logger::smf_api_server().debug("NAS header information: extended_protocol_discriminator %d, security_header_type:%d,sequence_number:%d,message_authentication_code:%d\n",
-			decoded_nas_msg.header.extended_protocol_discriminator,
-			decoded_nas_msg.header.security_header_type,
-			decoded_nas_msg.header.sequence_number,
-			decoded_nas_msg.header.message_authentication_code);
-
 	//Step 2. Create a pdu_session_create_sm_context_request message and store the necessary information
 	Logger::smf_api_server().debug("Create a pdu_session_create_sm_context_request message and store the necessary information\n");
 	smf::pdu_session_create_sm_context_request sm_context_req_msg = {};
 
+	//set N1 SM Message
+    sm_context_req_msg.set_n1_sm_message(n1_sm_msg_hex);
 	//set api root to be used as location header in HTTP response
 	sm_context_req_msg.set_api_root(m_address + base + "/sm-contexts");
 
@@ -135,35 +117,6 @@ void SMContextsCollectionApiImpl::post_sm_contexts(const SmContextMessage &smCon
 	//Subscription for PDU Session Status Notification
 	// Trace requirement
 
-	//From N1 Container (NAS)
-	//Extended protocol discriminator (Mandatory)	
-	Logger::smf_api_server().debug("SmContextCreateData, Extended protocol discriminator \n");
-	sm_context_req_msg.set_epd(decoded_nas_msg.header.extended_protocol_discriminator);
-
-	//PDU session ID (Mandatory)
-	Logger::smf_api_server().debug("SmContextCreateData, PDU session identity %d\n", decoded_nas_msg.plain.sm.header.pdu_session_identity);
-	sm_context_req_msg.set_pdu_session_id(decoded_nas_msg.plain.sm.header.pdu_session_identity);
-
-	//PTI (Mandatory)
-	Logger::smf_api_server().debug("SmContextCreateData, Procedure transaction ID %d\n", decoded_nas_msg.plain.sm.header.procedure_transaction_identity);
-	procedure_transaction_id_t pti = {.procedure_transaction_id = decoded_nas_msg.plain.sm.header.procedure_transaction_identity};
-	sm_context_req_msg.set_pti(pti);
-
-	//Message type (Mandatory) (PDU SESSION ESTABLISHMENT REQUEST message identity)
-	Logger::smf_api_server().debug("SmContextCreateData, Message Type %d\n", decoded_nas_msg.plain.sm.header.message_type);
-	sm_context_req_msg.set_message_type(decoded_nas_msg.plain.sm.header.message_type);
-
-	//Integrity protection maximum data rate (Mandatory)
-
-	//PDU session type (Optional)
-	Logger::smf_api_server().debug("SmContextCreateData, Message Type %d\n", PDN_TYPE_E_IPV4);
-	sm_context_req_msg.set_pdu_session_type(PDN_TYPE_E_IPV4);
-
-	if (decoded_nas_msg.plain.sm.header.message_type == PDU_SESSION_ESTABLISHMENT_REQUEST){
-		//TODO: Disable this command temporarily since can't get this info from tester
-		//sm_context_req_msg.set_pdu_session_type(decoded_nas_msg.plain.sm.specific_msg.pdu_session_establishment_request._pdusessiontype.pdu_session_type_value);
-	}
-
 	//SSC mode (Optional)
 	//5GSM capability (Optional)
 	//Maximum number of supported (Optional)

src/common/msg/itti_msg_n11.hpp

@@ -65,7 +65,6 @@ public:
 
 };
 
-
 //-----------------------------------------------------------------------------
 class itti_n11_create_sm_context_response : public itti_n11_msg {
 public:
@@ -108,7 +107,6 @@ public:
   smf::pdu_session_update_sm_context_response res;
   Pistache::Http::ResponseWriter http_response;
 
-
 };
 
 #endif /* ITTI_MSG_N11_HPP_INCLUDED_ */

src/common/smf.h

@@ -78,6 +78,7 @@ typedef uint8_t pdu_session_id;
 //should move to 24.501
 
 enum pdu_session_type_e {
+  PDU_SESSION_TYPE_E_UNKNOWN = 0,
   PDU_SESSION_TYPE_E_IPV4 = 1,
   PDU_SESSION_TYPE_E_IPV6 = 2,
   PDU_SESSION_TYPE_E_IPV4V6 = 3,

src/nas/3gpp_24.501.h

@@ -81,6 +81,8 @@ extern "C" {
 //0b11******
 //5GS Session Management Messages
 
+//TODO should be updated with enum
+#define PDU_SESSION_MESSAGE_TYPE_UNKNOWN        0b00000000
 #define PDU_SESSION_ESTABLISHMENT_REQUEST       0b11000001
 #define PDU_SESSION_ESTABLISHMENT_ACCEPT        0b11000010
 #define PDU_SESSION_ESTABLISHMENT_REJECT        0b11000011

src/ngap/ng_pdu_session_resource_setup_request.c

@@ -32,7 +32,7 @@ Ngap_PDUSessionResourceSetupRequestIEs_t  *make_req_RAN_UE_NGAP_ID(uint32_t rAN_
 	ie->value.present = Ngap_PDUSessionResourceSetupRequestIEs__value_PR_RAN_UE_NGAP_ID;
 	ie->value.choice.RAN_UE_NGAP_ID = rAN_UE_NGAP_ID ;
 
-	printf("RAN_UE_NGAP_ID: 0x%x\n",ie->value.choice.RAN_UE_NGAP_ID);
+	printf("RAN_UE_NGAP_ID: %lu\n",ie->value.choice.RAN_UE_NGAP_ID);
 	return ie;
 }
 
@@ -48,7 +48,7 @@ Ngap_PDUSessionResourceSetupRequestIEs_t  *make_req_AMF_UE_NGAP_ID(uint64_t amf_
 	asn_ulong2INTEGER(&ie->value.choice.AMF_UE_NGAP_ID, amf_UE_NGAP_ID & AMF_UE_NGAP_ID_MASK_);
 	
 	
-	printf("AMF_UE_NGAP_ID: 0x%x\n",amf_UE_NGAP_ID);
+	printf("AMF_UE_NGAP_ID: %lu\n",amf_UE_NGAP_ID);
 	
 	return ie;
 }
@@ -62,7 +62,7 @@ Ngap_PDUSessionResourceSetupRequestIEs_t  *make_RANPagingPriority(const long  ra
 	ie->value.present = Ngap_PDUSessionResourceSetupRequestIEs__value_PR_RANPagingPriority;
     ie->value.choice.RANPagingPriority  = ranPagingPriority;
 
-    printf("RANPagingPriority: 0x%x\n",ie->value.choice.RANPagingPriority);
+    printf("RANPagingPriority: %ld",ie->value.choice.RANPagingPriority);
 	return ie;
 }
 
@@ -76,7 +76,7 @@ Ngap_PDUSessionResourceSetupRequestIEs_t  *make_NAS_PDU(const char *nas_pdu)
 	ie->value.present = Ngap_PDUSessionResourceSetupRequestIEs__value_PR_NAS_PDU;
 	OCTET_STRING_fromBuf (&ie->value.choice.NAS_PDU, nas_pdu, strlen(nas_pdu));
 
-    printf("nas_pdu, nas_pdu_size:%d, nas_pdu:%s,\n", strlen(nas_pdu), nas_pdu);
+    printf("nas_pdu, nas_pdu_size:%ld, nas_pdu:%s,\n", strlen(nas_pdu), nas_pdu);
 
 	return ie;
 }

src/oai_smf/main.cpp

@@ -89,7 +89,7 @@ int main(int argc, char **argv)
   }
 
   // Logger
-  Logger::init( "spgwc" , Options::getlogStdout() , Options::getlogRotFilelog());
+  Logger::init( "smf" , Options::getlogStdout() , Options::getlogRotFilelog());
 
   Logger::smf_app().startup( "Options parsed" );
 

src/smf_app/CMakeLists.txt

@@ -59,6 +59,7 @@ add_library (SMF STATIC
   smf_app.cpp
   smf_config.cpp
   smf_context.cpp
+  smf_ngap.cpp
   smf_pfcp_association.cpp
   smf_pco.cpp
   smf_procedure.cpp

src/smf_app/smf_app.hpp

@@ -43,12 +43,6 @@
 #include "pistache/router.h"
 #include "smf_msg.hpp"
 
-extern "C"{
-#include "nas_message.h"
-#include "mmData.h"
-#include "Ngap_NGAP-PDU.h"
-}
-
 #include <map>
 #include <set>
 #include <shared_mutex>
@@ -195,59 +189,12 @@ public:
   void send_create_session_response(Pistache::Http::ResponseWriter& httpResponse, oai::smf_server::model::SmContextCreateError& smContextCreateError, Pistache::Http::Code code);
 
   /*
-   * Create N1 SM Container to send to AMF (using NAS lib)
-   * @param [std::shared_ptr<itti_n11_create_sm_context_response>] sm_context_res
-   * @param [uint8_t] msg_type Type of N1 message
-   * @param [std::string&] nas_msg_str store NAS message in form of string
-   *
+   * Convert a string to hex representing this string
+   * @param [std::string&] input_str Input string
+   * @param [std::string&] output_str String represents string in hex format
+   * @return void
    */
-  void create_n1_sm_container(std::shared_ptr<itti_n11_create_sm_context_response> sm_context_res, uint8_t msg_type, std::string& nas_msg_str, uint8_t sm_cause = 0);
-
-  //for testing purpose!!
-  void create_n1_sm_container(uint8_t msg_type, std::string& nas_msg_str, uint8_t sm_cause = 0);
-
-
-  /*
-    * Create N1 SM Container to send to AMF (using NAS lib)
-    * @param [std::shared_ptr<itti_n11_create_sm_context_request>] sm_context_req
-    * @param [uint8_t] msg_type Type of N1 message
-    * @param [std::string&] nas_msg_str store NAS message in form of string
-    *
-    */
-   void create_n1_sm_container(std::shared_ptr<itti_n11_create_sm_context_request> sm_context_req, uint8_t msg_type, std::string& nas_msg_str,  uint8_t sm_cause = 0);
-
-  /*
-    * Create N2 SM Information to send to AMF (using NAS lib)
-    * @param [std::shared_ptr<itti_n11_create_sm_context_response>] sm_context_res
-    * @param [uint8_t] msg_type Type of N2 message
-    * @param [std::string&] ngap_msg_str store NGAP message in form of string
-    *
-    */
-   void create_n2_sm_information(std::shared_ptr<itti_n11_create_sm_context_response> sm_context_res, uint8_t ngap_msg_type, uint8_t ngap_ie_type, std::string& ngap_msg_str);
-
-   /*
-     * Decode N1 SM Container into the NAS mesasge (using NAS lib)
-     * @param [nas_message_t&] nas_msg Store NAS message after decoded
-     * @param [std::string&] n1_sm_msg N1 SM Container from AMF
-     * @return status of the decode process
-     */
-   int decode_nas_message_n1_sm_container(nas_message_t& nas_msg, std::string& n1_sm_msg);
-
-   /*
-     * Convert a string to hex representing this string
-     * @param [std::string&] input_str Input string
-     * @param [std::string&] output_str String represents string in hex format
-     * @return void
-     */
-   void convert_string_2_hex(std::string& input_str, std::string& output_str);
-
-   /*
-     * Decode N2 SM Information (using NGAP lib)
-     * @param [Ngap_NGAP_PDU_t&] ngap_msg Store decoded NGAP message
-     * @param [std::string&] n2_sm_info N2 SM Information from AMF
-     * @return status of the decode process
-     */
-   int decode_ngap_message(Ngap_NGAP_PDU_t& ngap_msg, std::string& n2_sm_info);
+  void convert_string_2_hex(std::string& input_str, std::string& output_str);
 
 };
 }

src/smf_app/smf_config.cpp

@@ -151,8 +151,8 @@ int smf_config::load_itti(const Setting& itti_cfg, itti_cfg_t& cfg)
   }
 
   try {
-    const Setting& pgw_app_sched_params_cfg = itti_cfg[SMF_CONFIG_STRING_PGW_APP_SCHED_PARAMS];
-    load_thread_sched_params(pgw_app_sched_params_cfg, cfg.pgw_app_sched_params);
+    const Setting& smf_app_sched_params_cfg = itti_cfg[SMF_CONFIG_STRING_SMF_APP_SCHED_PARAMS];
+    load_thread_sched_params(smf_app_sched_params_cfg, cfg.smf_app_sched_params);
   } catch(const SettingNotFoundException &nfex) {
     Logger::smf_app().info("%s : %s, using defaults", nfex.what(), nfex.getPath());
   }
@@ -482,7 +482,7 @@ int smf_config::load(const string& config_file)
 void smf_config::display ()
 {
   Logger::smf_app().info( "==== EURECOM %s v%s ====", PACKAGE_NAME, PACKAGE_VERSION);
-  Logger::smf_app().info( "Configuration PGW-C:");
+  Logger::smf_app().info( "Configuration SMF:");
   Logger::smf_app().info( "- Instance ..............: %d\n", instance);
   Logger::smf_app().info( "- PID dir ...............: %s\n", pid_dir.c_str());
 
@@ -524,10 +524,10 @@ void smf_config::display ()
   Logger::smf_app().info( "    CPU id............: %d", itti.sx_sched_params.cpu_id);
   Logger::smf_app().info( "    Scheduling policy : %d", itti.sx_sched_params.sched_policy);
   Logger::smf_app().info( "    Scheduling prio  .: %d", itti.sx_sched_params.sched_priority);
-  Logger::smf_app().info( "- ITTI PGW_APP task Threading:");
-  Logger::smf_app().info( "    CPU id............: %d", itti.pgw_app_sched_params.cpu_id);
-  Logger::smf_app().info( "    Scheduling policy : %d", itti.pgw_app_sched_params.sched_policy);
-  Logger::smf_app().info( "    Scheduling prio  .: %d", itti.pgw_app_sched_params.sched_priority);
+  Logger::smf_app().info( "- ITTI SMF_APP task Threading:");
+  Logger::smf_app().info( "    CPU id............: %d", itti.smf_app_sched_params.cpu_id);
+  Logger::smf_app().info( "    Scheduling policy : %d", itti.smf_app_sched_params.sched_policy);
+  Logger::smf_app().info( "    Scheduling prio  .: %d", itti.smf_app_sched_params.sched_priority);
   Logger::smf_app().info( "- ITTI ASYNC_CMD task Threading:");
   Logger::smf_app().info( "    CPU id............: %d", itti.async_cmd_sched_params.cpu_id);
   Logger::smf_app().info( "    Scheduling policy : %d", itti.async_cmd_sched_params.sched_policy);

src/smf_app/smf_config.hpp

@@ -122,7 +122,7 @@
 #define SMF_CONFIG_STRING_S11_SCHED_PARAMS                      "S11_SCHED_PARAMS"
 #define SMF_CONFIG_STRING_S5S8_SCHED_PARAMS                     "S5S8_SCHED_PARAMS"
 #define SMF_CONFIG_STRING_SX_SCHED_PARAMS                       "SX_SCHED_PARAMS"
-#define SMF_CONFIG_STRING_PGW_APP_SCHED_PARAMS                  "PGW_APP_SCHED_PARAMS"
+#define SMF_CONFIG_STRING_SMF_APP_SCHED_PARAMS                  "SMF_APP_SCHED_PARAMS"
 #define SMF_CONFIG_STRING_ASYNC_CMD_SCHED_PARAMS                "ASYNC_CMD_SCHED_PARAMS"
 
 
@@ -151,7 +151,7 @@ typedef struct itti_cfg_s {
   util::thread_sched_params itti_timer_sched_params;
   util::thread_sched_params sx_sched_params;
   util::thread_sched_params s5s8_sched_params;
-  util::thread_sched_params pgw_app_sched_params;
+  util::thread_sched_params smf_app_sched_params;
   util::thread_sched_params async_cmd_sched_params;
 } itti_cfg_t;
 
@@ -249,7 +249,7 @@ public:
     itti.itti_timer_sched_params.sched_priority = 85;
     itti.sx_sched_params.sched_priority = 84;
     itti.s5s8_sched_params.sched_priority = 84;
-    itti.pgw_app_sched_params.sched_priority = 84;
+    itti.smf_app_sched_params.sched_priority = 84;
     itti.async_cmd_sched_params.sched_priority = 84;
     
     sx.thread_rd_sched_params.sched_priority = 90;
@@ -279,7 +279,7 @@ public:
   bool is_dotted_dnn_handled(const std::string& apn, const pdu_session_type_t& pdn_session_type);
 };
 
-} // namespace pgw
+} // namespace smf
 
 
 #endif /* FILE_SMF_CONFIG_HPP_SEEN */

src/smf_app/smf_context.cpp

@@ -32,6 +32,7 @@
 #include "smf_app.hpp"
 #include "smf_config.hpp"
 #include "smf_context.hpp"
+#include "smf_ngap.hpp"
 #include "smf_paa_dynamic.hpp"
 #include "smf_procedure.hpp"
 #include "ProblemDetails.h"
@@ -162,25 +163,25 @@ void smf_pdu_session::set_seid(const uint64_t& s){
 }
 
 //------------------------------------------------------------------------------
-// TODO check if prd_id should be uniq in the (S)PGW-U or in the context of a pdn connection
+// TODO check if prd_id should be uniq in the UPF or in the context of a pdn connection
 void smf_pdu_session::generate_far_id(pfcp::far_id_t& far_id)
 {
   far_id.far_id = far_id_generator.get_uid();
 }
 //------------------------------------------------------------------------------
-// TODO check if prd_id should be uniq in the (S)PGW-U or in the context of a pdn connection
+// TODO check if prd_id should be uniq in the UPF or in the context of a pdn connection
 void smf_pdu_session::release_far_id(const pfcp::far_id_t& far_id)
 {
   far_id_generator.free_uid(far_id.far_id);
 }
 //------------------------------------------------------------------------------
-// TODO check if prd_id should be uniq in the (S)PGW-U or in the context of a pdn connection
+// TODO check if prd_id should be uniq in the UPF or in the context of a pdn connection
 void smf_pdu_session::generate_pdr_id(pfcp::pdr_id_t& pdr_id)
 {
   pdr_id.rule_id = pdr_id_generator.get_uid();
 }
 //------------------------------------------------------------------------------
-// TODO check if prd_id should be uniq in the (S)PGW-U or in the context of a pdn connection
+// TODO check if prd_id should be uniq in the UPF or in the context of a pdn connection
 void smf_pdu_session::release_pdr_id(const pfcp::pdr_id_t& pdr_id)
 {
   pdr_id_generator.free_uid(pdr_id.rule_id);
@@ -281,7 +282,7 @@ std::string smf_context::toString() const
 {
   std::unique_lock<std::recursive_mutex> lock(m_context);
   std::string s = {};
-  s.append("PGW CONTEXT:\n");
+  s.append("SMF CONTEXT:\n");
   s.append("\tIMSI:\t\t\t\t").append(imsi.toString()).append("\n");
   s.append("\tIMSI UNAUTHENTICATED:\t\t").append(std::to_string(imsi_unauthenticated_indicator)).append("\n");
   for (auto it : dnns) {
@@ -354,6 +355,7 @@ void smf_context::handle_amf_msg (std::shared_ptr<itti_n11_create_sm_context_req
 	sm_context_resp->res.set_snssai(snssai);
 	sm_context_resp->res.set_dnn(dnn);
 
+
 	//Step 3. find pdu_session
 	std::shared_ptr<dnn_context> sd;
 	bool find_dnn = find_dnn_context (dnn, sd);
@@ -595,7 +597,7 @@ void smf_context::handle_amf_msg (std::shared_ptr<itti_n11_update_sm_context_req
 
 	//decode Ngap_PDUSessionResourceSetupResponseTransfer
 	if (n2_sm_info_type.compare(n2_sm_info_type_e2str[PDU_RES_SETUP_RSP]) == 0){
-		Ngap_PDUSessionResourceSetupResponseTransfer_t   *decoded_msg = NULL;
+		std::unique_ptr<Ngap_PDUSessionResourceSetupResponseTransfer_t>  decoded_msg = std::unique_ptr<Ngap_PDUSessionResourceSetupResponseTransfer_t>();
 		//Decode N2 SM info into decoded nas msg
 		asn_dec_rval_t rc  = asn_decode(NULL,ATS_ALIGNED_CANONICAL_PER, &asn_DEF_Ngap_PDUSessionResourceSetupResponseTransfer, (void **)&decoded_msg, (void *)n2_sm_infomation.c_str(), n2_sm_infomation.length());
 		if(rc.code != RC_OK)

src/smf_app/smf_msg.cpp

@@ -31,20 +31,35 @@
 
 using namespace smf;
 
+//-----------------------------------------------------------------------------
 void qos_flow_context_created::set_cause(const uint8_t cause)
 {
 	cause_value = cause;
 }
+//-----------------------------------------------------------------------------
 void qos_flow_context_created::set_qfi(const pfcp::qfi_t& q)
 {
 	qfi = q;
 }
+//-----------------------------------------------------------------------------
 void qos_flow_context_created::set_ul_fteid(const fteid_t& teid)
 {
 	ul_fteid = teid;
 }
 
+//-----------------------------------------------------------------------------
+pdu_session_msg_type_t pdu_session_msg::get_msg_type() const
+{
+	return m_msg_type;
+}
 
+//-----------------------------------------------------------------------------
+void pdu_session_msg::set_msg_type(pdu_session_msg_type_t const& msg_type)
+{
+	m_msg_type = msg_type;
+}
+
+//-----------------------------------------------------------------------------
 supi_t pdu_session_msg::get_supi() const
 {
 	return m_supi;
@@ -68,8 +83,6 @@ void pdu_session_msg::set_supi_prefix(std::string const& prefix)
 	m_supi_prefix = prefix;
 }
 
-
-
 //-----------------------------------------------------------------------------
 pdu_session_id_t pdu_session_msg::get_pdu_session_id() const
 {
@@ -118,86 +131,96 @@ std::string pdu_session_msg::get_api_root() const
 }
 
 //-----------------------------------------------------------------------------
-std::string pdu_session_create_sm_context_request::get_serving_nf_id() const
+uint8_t pdu_session_create_sm_context::get_pdu_session_type() const
 {
-	return m_serving_nf_id;
+	return m_pdu_session_type;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_serving_nf_id(std::string const& serving_nf_id)
+void pdu_session_create_sm_context::set_pdu_session_type (uint8_t const& pdu_session_type)
 {
-	m_serving_nf_id = serving_nf_id;
+	m_pdu_session_type = pdu_session_type;
 }
 
 //-----------------------------------------------------------------------------
-std::string pdu_session_create_sm_context_request::get_request_type() const
+extended_protocol_discriminator_t pdu_session_create_sm_context::get_epd() const
 {
-	return m_request_type;
+	return m_epd;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_request_type(std::string const& request_type)
+void pdu_session_create_sm_context::set_epd(extended_protocol_discriminator_t const& epd)
 {
-	m_request_type = request_type;
+	m_epd = epd;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_dnn_selection_mode(std::string const& dnn_selection_mode)
+procedure_transaction_id_t pdu_session_create_sm_context::get_pti() const
 {
-	m_dnn_selection_mode = dnn_selection_mode;
+	return m_pti;
 }
 
 //-----------------------------------------------------------------------------
-std::string pdu_session_create_sm_context_request::get_dnn_selection_mode() const
+void pdu_session_create_sm_context::set_pti(procedure_transaction_id_t const& pti)
 {
-	return m_dnn_selection_mode;
+	m_pti = pti;
 }
 
 //-----------------------------------------------------------------------------
-uint8_t pdu_session_create_sm_context_request::get_pdu_session_type() const
+uint8_t pdu_session_create_sm_context::get_message_type() const
 {
-	return m_pdu_session_type;
+	return m_message_type;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_pdu_session_type (uint8_t const& pdu_session_type)
-{
-	m_pdu_session_type = pdu_session_type;
+void pdu_session_create_sm_context::set_message_type(uint8_t const& message_type){
+	m_message_type = message_type;
+}
+
+
+
+std::string pdu_session_create_sm_context_request::get_n1_sm_message() const{
+	return 	m_n1_sm_message;
+}
+
+void pdu_session_create_sm_context_request::set_n1_sm_message(std::string const& value){
+	m_n1_sm_message = value;
 }
 
 //-----------------------------------------------------------------------------
-extended_protocol_discriminator_t pdu_session_create_sm_context_request::get_epd() const
+std::string pdu_session_create_sm_context_request::get_serving_nf_id() const
 {
-	return m_epd;
+	return m_serving_nf_id;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_epd(extended_protocol_discriminator_t const& epd)
+void pdu_session_create_sm_context_request::set_serving_nf_id(std::string const& serving_nf_id)
 {
-	m_epd = epd;
+	m_serving_nf_id = serving_nf_id;
 }
 
 //-----------------------------------------------------------------------------
-procedure_transaction_id_t pdu_session_create_sm_context_request::get_pti() const
+std::string pdu_session_create_sm_context_request::get_request_type() const
 {
-	return m_pti;
+	return m_request_type;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_pti(procedure_transaction_id_t const& pti)
+void pdu_session_create_sm_context_request::set_request_type(std::string const& request_type)
 {
-	m_pti = pti;
+	m_request_type = request_type;
 }
 
 //-----------------------------------------------------------------------------
-uint8_t pdu_session_create_sm_context_request::get_message_type() const
+void pdu_session_create_sm_context_request::set_dnn_selection_mode(std::string const& dnn_selection_mode)
 {
-	return m_message_type;
+	m_dnn_selection_mode = dnn_selection_mode;
 }
 
 //-----------------------------------------------------------------------------
-void pdu_session_create_sm_context_request::set_message_type(uint8_t const& message_type){
-	m_message_type = message_type;
+std::string pdu_session_create_sm_context_request::get_dnn_selection_mode() const
+{
+	return m_dnn_selection_mode;
 }
 
 //-----------------------------------------------------------------------------
@@ -247,24 +270,29 @@ Pistache::Http::Code pdu_session_create_sm_context_response::get_http_code()
 	return m_code;
 }
 
+//-----------------------------------------------------------------------------
 void pdu_session_create_sm_context_response::set_qos_flow_context(const qos_flow_context_created qos_flow)
 {
 	qos_flow_context = qos_flow;
 }
 
+//-----------------------------------------------------------------------------
 /* pdu_session_update_sm_context_request */
 std::string pdu_session_update_sm_context_request::get_n2_sm_information() const{
 	return 	n2_sm_information;
 }
 
+//-----------------------------------------------------------------------------
 void pdu_session_update_sm_context_request::set_n2_sm_information(std::string const& value){
 	n2_sm_information = value;
 }
 
+//-----------------------------------------------------------------------------
 std::string pdu_session_update_sm_context_request::get_n2_sm_info_type() const{
 	return n2_sm_info_type;
 }
 
+//-----------------------------------------------------------------------------
 void pdu_session_update_sm_context_request::set_n2_sm_info_type(std::string const& value){
 	n2_sm_info_type = value;
 }

src/smf_app/smf_n11.cpp

@@ -32,6 +32,7 @@
 #include "itti.hpp"
 #include "logger.hpp"
 #include "smf_n11.hpp"
+#include "smf_ngap.hpp"
 #include "smf_app.hpp"
 #include "smf_config.hpp"
 #include <curl/curl.h>
@@ -121,62 +122,74 @@ void smf_n11::send_msg_to_amf(std::shared_ptr<itti_n11_create_sm_context_respons
 
 	nlohmann::json message_transfer_req_data;
 	std::string n1_message;
+	std::string n2_message;
+	smf_ngap smf_ngap_inst;
 
+	pdu_session_create_sm_context_response context_res_msg = sm_context_res->res;
 	//Curl multipart
 	CURL *curl = curl_easy_init();
 
 	//get supi and put into URL
 	std::string supi_str;
-	supi_t supi = sm_context_res->res.get_supi();
-	supi_str = sm_context_res->res.get_supi_prefix() + "-" + smf_supi_to_string (supi);
-
+	supi_t supi = context_res_msg.get_supi();
+	supi_str = context_res_msg.get_supi_prefix() + "-" + smf_supi_to_string (supi);
 	std::string url = std::string(inet_ntoa (*((struct in_addr *)&smf_cfg.amf_addr.ipv4_addr)))  + ":" + std::to_string(smf_cfg.amf_addr.port) + "/namf-comm/v1/ue-contexts/" + supi_str.c_str() +"/n1-n2-messages";
 	Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] Sending Communication_N1N2MessageTransfer to AMF, AMF's URL: %s", url.c_str());
 
-	std::string ngap_msg_str;
-
-	//N1 SM container & N2 SM Information
+	//Create N1 SM container & N2 SM Information
 	//TODO: should uncomment these lines when including UPF in the test
-//	if (sm_context_res->res.get_cause() != REQUEST_ACCEPTED) { //PDU Session Establishment Reject
-//		Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] PDU Session Establishment Reject\n");
-//		smf_app_inst->create_n1_sm_container(sm_context_res, PDU_SESSION_ESTABLISHMENT_REJECT, n1_message); //need cause?
-//	} else { //PDU Session Establishment Accept
+	//for the moment, can only test with PDU Session Establishment Reject!!
+	context_res_msg.set_cause(REQUEST_ACCEPTED);//for testing purpose
+
+	if (context_res_msg.get_cause() != REQUEST_ACCEPTED) { //PDU Session Establishment Reject
+		Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] PDU Session Establishment Reject\n");
+		//pdu_session_msg& msg = context_res_msg;
+		smf_ngap_inst.create_n1_sm_container(context_res_msg, PDU_SESSION_ESTABLISHMENT_REJECT, n1_message, 0); //TODO: need cause?
+	} else { //PDU Session Establishment Accept
 		Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] PDU Session Establishment Accept \n");
-		smf_app_inst->create_n1_sm_container(sm_context_res, PDU_SESSION_ESTABLISHMENT_ACCEPT, n1_message); //need cause?
-
+		smf_ngap_inst.create_n1_sm_container(context_res_msg, PDU_SESSION_ESTABLISHMENT_ACCEPT, n1_message, 0); //TODO: need cause?
 		//TODO: N2 SM Information (Step 11, section 4.3.2.2.1 @ 3GPP TS 23.502)
-		smf_app_inst->create_n2_sm_information(sm_context_res, 1, 1, ngap_msg_str);
-//	}
-	
-	//fill the content
-	std::string n1_msg_hex;
-	smf_app_inst->convert_string_2_hex(n1_message, n1_msg_hex);
-	Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] n1MessageContent: %s\n ", n1_msg_hex.c_str());
-
-	std::string n2_msg_hex;
-        smf_app_inst->convert_string_2_hex(ngap_msg_str, n2_msg_hex);
-        Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] n2SMInformation %s\n ", n2_msg_hex.c_str());
+		smf_ngap_inst.create_n2_sm_information(context_res_msg, 1, 1, n2_message);
+	}
 
+	//Fill the json part	
+	//N1SM
 	message_transfer_req_data["n1MessageContainer"]["n1MessageClass"] = "SM";
 	message_transfer_req_data["n1MessageContainer"]["n1MessageContent"]["contentId"] = "n1SmMsg"; //part 2
 
-	//TODO: fill the content of N1N2MessageTransferReqData
-	message_transfer_req_data["n2InfoContainer"]["n2InformationClass"] = "SM";
-	message_transfer_req_data["n2InfoContainer"]["smInfo"]["PduSessionId"] = 1;
-	//N2InfoContent (section 6.1.6.2.27@3GPP TS 29.518)
-	//message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapMessageType"] = 123; //NGAP message -to be verified: doesn't exist in tester
-	message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapIeType"] = "PDU_RES_SETUP_REQ"; //NGAP message
-	message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapData"]["contentId"] = "n2SmMsg"; //part 3
-	//message_transfer_req_data["n2InfoContainer"]["smInfo"]["nasPdu"] = ;
-	//message_transfer_req_data["n2InfoContainer"]["smInfo"]["sNssai"] = ;
-	message_transfer_req_data["n2InfoContainer"]["ranInfo"] = "SM";
+	//N2SM
+	if (context_res_msg.get_cause() == REQUEST_ACCEPTED){
+		//TODO: fill the content of N1N2MessageTransferReqData
+		message_transfer_req_data["n2InfoContainer"]["n2InformationClass"] = "SM";
+		message_transfer_req_data["n2InfoContainer"]["smInfo"]["PduSessionId"] = 1;
+		//N2InfoContent (section 6.1.6.2.27@3GPP TS 29.518)
+		//message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapMessageType"] = 123; //NGAP message -to be verified: doesn't exist in tester
+		message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapIeType"] = "PDU_RES_SETUP_REQ"; //NGAP message
+		message_transfer_req_data["n2InfoContainer"]["smInfo"]["n2InfoContent"]["ngapData"]["contentId"] = "n2SmMsg"; //part 3
+		//message_transfer_req_data["n2InfoContainer"]["smInfo"]["sNssai"]["sst"] = 1;
+		//message_transfer_req_data["n2InfoContainer"]["smInfo"]["sNssai"]["sd"] = "";
+		message_transfer_req_data["n2InfoContainer"]["ranInfo"] = "SM";
+	}
+    //Others information
 	message_transfer_req_data["ppi"] = 1;
-	message_transfer_req_data["pduSessionId"] = sm_context_res->res.get_pdu_session_id();
+	message_transfer_req_data["pduSessionId"] = context_res_msg.get_pdu_session_id();
 	//message_transfer_req_data["arp"]["priorityLevel"] = 1;
 	//message_transfer_req_data["arp"]["preemptCap"] = "NOT_PREEMPT";
 	//message_transfer_req_data["arp"]["preemptVuln"] = "NOT_PREEMPTABLE";
+	//message_transfer_req_data["5qi"] = ;
 	std::string json_part = message_transfer_req_data.dump();
 
+	//fill the N1SmMsg, N2SmMsg content
+	std::string n1_msg_hex;
+	smf_app_inst->convert_string_2_hex(n1_message, n1_msg_hex);
+	Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] n1MessageContent: %s\n ", n1_msg_hex.c_str());
+
+	std::string n2_msg_hex;
+	if (context_res_msg.get_cause() == REQUEST_ACCEPTED){
+		smf_app_inst->convert_string_2_hex(n2_message, n2_msg_hex);
+		Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] n2SMInformation %s\n ", n2_msg_hex.c_str());
+	}
+
 	Logger::smf_n11().debug("[SMF N11: N1N2MessageTransfer] Sending message to AMF....\n ");
 	if(curl) {
 
@@ -187,10 +200,9 @@ void smf_n11::send_msg_to_amf(std::shared_ptr<itti_n11_create_sm_context_respons
 		curl_mime *alt;
 		curl_mimepart *part;
 
-		headers = curl_slist_append(headers, "charsets: utf-8");
+		//		headers = curl_slist_append(headers, "charsets: utf-8");
 		headers = curl_slist_append(headers, "content-type: multipart/related");
 		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
-
 		curl_easy_setopt(curl, CURLOPT_URL, url.c_str() );
 		curl_easy_setopt(curl, CURLOPT_HTTPGET,1);
 		curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, AMF_CURL_TIMEOUT_MS);
@@ -209,18 +221,20 @@ void smf_n11::send_msg_to_amf(std::shared_ptr<itti_n11_create_sm_context_respons
 		curl_mime_type(part, "application/vnd.3gpp.5gnas");
 		curl_mime_name (part, "n1SmMsg");
 
-		//N2 SM Information
-		part = curl_mime_addpart(mime);
-		curl_mime_data(part, n2_msg_hex.c_str(), CURL_ZERO_TERMINATED);
-		curl_mime_type(part, "application/vnd.3gpp.ngap");
-		curl_mime_name (part, "n2SmMsg");
+		if (sm_context_res->res.get_cause() == REQUEST_ACCEPTED) {
+			//N2 SM Information
+			part = curl_mime_addpart(mime);
+			//TODO:
+			curl_mime_data(part, n2_msg_hex.substr(0,86).c_str(), CURL_ZERO_TERMINATED); //TODO: need to be solved
+			curl_mime_type(part, "application/vnd.3gpp.ngap");
+			curl_mime_name (part, "n2SmMsg");
+		}
 
 		curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime);
 		res = curl_easy_perform(curl);
 
 		// Response information.
 		long httpCode(0);
-
 		std::unique_ptr<std::string> httpData(new std::string());
 		/*
 		// Hook up data handling function.

src/smf_app/smf_ngap.hpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file smf_ngap.hpp
+ * \brief
+  \author  Tien-Thinh NGUYEN
+  \company Eurecom
+  \date 2019
+  \email: tien-thinh.nguyen@eurecom.fr
+ */
+
+#ifndef FILE_SMF_NGAP_HPP_SEEN
+#define FILE_SMF_NGAP_HPP_SEEN
+
+#include "smf.h"
+#include "3gpp_29.274.h"
+#include "itti_msg_n4.hpp"
+#include "itti_msg_n11.hpp"
+#include "smf_context.hpp"
+#include "smf_pco.hpp"
+#include "SmContextCreateData.h"
+#include "SmContextCreateError.h"
+#include "pistache/endpoint.h"
+#include "pistache/http.h"
+#include "pistache/router.h"
+#include "smf_msg.hpp"
+#include "smf_app.hpp"
+#include "3gpp_29.502.h"
+
+extern "C"{
+#include "nas_message.h"
+#include "mmData.h"
+#include "Ngap_NGAP-PDU.h"
+#include "Ngap_PDUSessionResourceSetupResponseTransfer.h"
+}
+
+#include <map>
+#include <set>
+#include <shared_mutex>
+#include <string>
+#include <thread>
+
+namespace smf {
+
+class smf_ngap {
+private:
+
+public:
+	smf_ngap(){};
+	smf_ngap(smf_ngap const&)    = delete;
+	void operator=(smf_ngap const&)     = delete;
+
+	/*
+	 * Create N1 SM Container to send to AMF (using NAS lib)
+	 * @param [pdu_session_msg&] msg
+	 * @param [uint8_t] msg_type Type of N1 message
+	 * @param [std::string&] nas_msg_str store NAS message in form of string
+	 * @param [uint8_t] sm_cause store NAS Cause
+	 *
+	 */
+	void create_n1_sm_container(pdu_session_msg& msg, uint8_t msg_type, std::string& nas_msg_str, uint8_t sm_cause);
+
+	//for testing purpose!!
+	void create_n1_sm_container(uint8_t msg_type, std::string& nas_msg_str, uint8_t sm_cause = 0);
+
+	/*
+	 * Create N2 SM Information to send to AMF (using NAS lib)
+	 * @param [std::shared_ptr<itti_n11_create_sm_context_response>] sm_context_res
+	 * @param [uint8_t] msg_type Type of N2 message
+	 * @param [std::string&] ngap_msg_str store NGAP message in form of string
+	 *
+	 */
+	void create_n2_sm_information(pdu_session_msg& msg, uint8_t ngap_msg_type, uint8_t ngap_ie_type, std::string& ngap_msg_str);
+
+	/*
+	 * Decode N1 SM Container into the NAS mesasge (using NAS lib)
+	 * @param [nas_message_t&] nas_msg Store NAS message after decoded
+	 * @param [std::string&] n1_sm_msg N1 SM Container from AMF
+	 * @return status of the decode process
+	 */
+	int decode_n1_sm_container(nas_message_t& nas_msg, std::string& n1_sm_msg);
+
+	/*
+	 * Decode N2 SM Information (using NGAP lib)
+	 * @param [Ngap_NGAP_PDU_t&] ngap_msg Store decoded NGAP message
+	 * @param [std::string&] n2_sm_info N2 SM Information from AMF
+	 * @return status of the decode process
+	 */
+	int decode_n2_sm_information(std::unique_ptr<Ngap_PDUSessionResourceSetupResponseTransfer_t>& ngap_IE, std::string& n2_sm_info, std::string& n2_sm_info_type);
+
+
+};
+
+} // namespace smf
+
+
+#endif /* FILE_SMF_NGAP_HPP_SEEN */

src/smf_app/smf_paa_dynamic.hpp

@@ -307,4 +307,4 @@ public:
 
 };
 
-#endif /* FILE_PGW_PAA_DYNAMIC_HPP_SEEN */
+#endif /* FILE_SMF_PAA_DYNAMIC_HPP_SEEN */

src/smf_app/smf_pco.cpp

@@ -19,7 +19,7 @@
  *      contact@openairinterface.org
  */
 
-/*! \file pgw_pco.cpp
+/*! \file smf_pco.cpp
   \brief
   \author Lionel Gauthier
   \company Eurecom

src/smf_app/smf_procedure.cpp

@@ -38,6 +38,7 @@
 #include "msg_gtpv2c.hpp"
 #include "smf_app.hpp"
 #include "smf_config.hpp"
+#include "smf_ngap.hpp"
 #include "smf_pfcp_association.hpp"
 #include "smf_procedure.hpp"
 #include "smf_context.hpp"
@@ -231,8 +232,6 @@ int session_create_sm_context_procedure::run(std::shared_ptr<itti_n11_create_sm_
 	return RETURNok;
 }
 
-
-
 //------------------------------------------------------------------------------
 void session_create_sm_context_procedure::handle_itti_msg (itti_n4_session_establishment_response& resp, std::shared_ptr<smf::smf_context> sc)
 {
@@ -279,7 +278,6 @@ void session_create_sm_context_procedure::handle_itti_msg (itti_n4_session_estab
 	sc.get()->get_default_qos(n11_triggered_pending->res.get_snssai(), n11_triggered_pending->res.get_dnn(), default_qos);
 	qfi.qfi = default_qos._5qi;
 
-
     //TODO:	how about pdu_session_id??
 	smf_qos_flow q = {};
 	gtpv2c::bearer_context_created_within_create_session_response bcc = {};
@@ -311,21 +309,12 @@ void session_create_sm_context_procedure::handle_itti_msg (itti_n4_session_estab
 	qos_flow.set_qfi(qfi);
 	n11_triggered_pending->res.set_qos_flow_context(qos_flow);
 
-
 	//TODO: for qos bearer bearer_qos_t bearer_qos = {}; if(b.get(bearer_qos)){bcc.set(bearer_level_qos)};
 
     //TODO
-	//should send information of created bearer to AMF
+	// set the necessary information to be sent to AMF (N1N2MessageTransfer)
 	//n11_triggered_pending->add_bearer_context_created(bcc);
 	//N1N2MessageTransferReqData
-	//Step 11, section 4.3.2.2.1@TS 23.502
-	//Namf_Communication_N1N2MessageTransfer (PDU Session ID,
-	// N2 SM information (PDU Session ID, QFI(s), QoS Profile(s), CN Tunnel Info, S-NSSAI from the Allowed NSSAI, Session-AMBR, PDU
-	//Session Type, User Plane Security Enforcement information, UE Integrity Protection Maximum Data Rate),
-	//N1 SM container (PDU Session Establishment Accept (QoS Rule(s) and QoS Flow level QoS parameters if needed
-	//for the QoS Flow(s) associated with the QoS rule(s), selected SSC mode, S-NSSAI(s), DNN, allocated IPv4
-	//address, interface identifier, Session-AMBR, selected PDU Session Type, Reflective QoS Timer (if available),
-	//P-CSCF address(es), [Always-on PDU Session])))
 
     //send ITTI message to N11 interface to trigger N1N2MessageTransfer towards AMFs
 	Logger::smf_app().info( "Sending ITTI message %s to task TASK_SMF_N11", n11_triggered_pending->get_msg_name());

src/udp/CMakeLists.txt

@@ -24,9 +24,7 @@ include_directories(${SRC_TOP_DIR}/common/utils)
 include_directories(${SRC_TOP_DIR}/itti)
 include_directories(${SRC_TOP_DIR}/gtpv1u)
 include_directories(${SRC_TOP_DIR}/gtpv2c)
-include_directories(${SRC_TOP_DIR}/oai_spgwu)
 include_directories(${SRC_TOP_DIR}/pfcp)
-include_directories(${SRC_TOP_DIR}/spgwu)
 include_directories(${SRC_TOP_DIR}/udp)
 include_directories(${SRC_TOP_DIR}/../build/ext/spdlog/include)