/* * 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 1.0 (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 rrc_eNB_S1AP.c * \brief rrc S1AP procedures for eNB * \author Navid Nikaein, Laurent Winckel, Sebastien ROUX, and Lionel GAUTHIER * \date 2013-2016 * \version 1.0 * \company Eurecom * \email: navid.nikaein@eurecom.fr */ #if defined(ENABLE_USE_MME) # include "defs.h" # include "extern.h" # include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h" # include "RRC/LITE/MESSAGES/asn1_msg.h" # include "RRC/LITE/defs.h" # include "rrc_eNB_UE_context.h" # include "rrc_eNB_S1AP.h" # include "enb_config.h" # if defined(ENABLE_ITTI) # include "asn1_conversions.h" # include "intertask_interface.h" # include "pdcp.h" # include "pdcp_primitives.h" # include "s1ap_eNB.h" # else # include "../../S1AP/s1ap_eNB.h" # endif #if defined(ENABLE_SECURITY) # include "UTIL/OSA/osa_defs.h" #endif #include "msc.h" #include "UERadioAccessCapabilityInformation.h" #include "gtpv1u_eNB_task.h" #include "RRC/LITE/rrc_eNB_GTPV1U.h" /* Value to indicate an invalid UE initial id */ static const uint16_t UE_INITIAL_ID_INVALID = 0; /* Masks for S1AP Encryption algorithms, EEA0 is always supported (not coded) */ static const uint16_t S1AP_ENCRYPTION_EEA1_MASK = 0x8000; static const uint16_t S1AP_ENCRYPTION_EEA2_MASK = 0x4000; /* Masks for S1AP Integrity algorithms, EIA0 is always supported (not coded) */ static const uint16_t S1AP_INTEGRITY_EIA1_MASK = 0x8000; static const uint16_t S1AP_INTEGRITY_EIA2_MASK = 0x4000; #if defined(Rel10) || defined(Rel14) # define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_eia0_v920 #else #ifdef EXMIMO_IOT # define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_eia2 #else # define INTEGRITY_ALGORITHM_NONE SecurityAlgorithmConfig__integrityProtAlgorithm_reserved #endif #endif # if defined(ENABLE_ITTI) //------------------------------------------------------------------------------ struct rrc_ue_s1ap_ids_s* rrc_eNB_S1AP_get_ue_ids( eNB_RRC_INST* const rrc_instance_pP, const uint16_t ue_initial_id, const uint32_t eNB_ue_s1ap_id ) //------------------------------------------------------------------------------ { rrc_ue_s1ap_ids_t *result = NULL; rrc_ue_s1ap_ids_t *result2 = NULL; hashtable_rc_t h_rc; // we assume that a rrc_ue_s1ap_ids_s is initially inserted in initial_id2_s1ap_ids if (eNB_ue_s1ap_id > 0) { h_rc = hashtable_get(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id, (void**)&result); } if (ue_initial_id != UE_INITIAL_ID_INVALID) { h_rc = hashtable_get(rrc_instance_pP->initial_id2_s1ap_ids, (hash_key_t)ue_initial_id, (void**)&result); if (h_rc == HASH_TABLE_OK) { if (eNB_ue_s1ap_id > 0) { h_rc = hashtable_get(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id, (void**)&result2); if (h_rc != HASH_TABLE_OK) { result2 = malloc(sizeof(*result2)); if (NULL != result2) { *result2 = *result; result2->eNB_ue_s1ap_id = eNB_ue_s1ap_id; result->eNB_ue_s1ap_id = eNB_ue_s1ap_id; h_rc = hashtable_insert(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id, result2); if (h_rc != HASH_TABLE_OK) { LOG_E(S1AP, "[eNB %ld] Error while hashtable_insert in s1ap_id2_s1ap_ids eNB_ue_s1ap_id %"PRIu32"\n", rrc_instance_pP - eNB_rrc_inst, eNB_ue_s1ap_id); } } } } } } return result; } //------------------------------------------------------------------------------ void rrc_eNB_S1AP_remove_ue_ids( eNB_RRC_INST* const rrc_instance_pP, struct rrc_ue_s1ap_ids_s* const ue_ids_pP ) //------------------------------------------------------------------------------ { const uint16_t ue_initial_id = ue_ids_pP->ue_initial_id; const uint32_t eNB_ue_s1ap_id = ue_ids_pP->eNB_ue_s1ap_id; hashtable_rc_t h_rc; if (rrc_instance_pP == NULL) { LOG_E(RRC, "Bad RRC instance\n"); return; } if (ue_ids_pP == NULL) { LOG_E(RRC, "Trying to free a NULL S1AP UE IDs\n"); return; } if (eNB_ue_s1ap_id > 0) { h_rc = hashtable_remove(rrc_instance_pP->s1ap_id2_s1ap_ids, (hash_key_t)eNB_ue_s1ap_id); if (h_rc != HASH_TABLE_OK) { LOG_W(RRC, "S1AP Did not find entry in hashtable s1ap_id2_s1ap_ids for eNB_ue_s1ap_id %u\n", eNB_ue_s1ap_id); } else { LOG_W(RRC, "S1AP removed entry in hashtable s1ap_id2_s1ap_ids for eNB_ue_s1ap_id %u\n", eNB_ue_s1ap_id); } } if (ue_initial_id != UE_INITIAL_ID_INVALID) { h_rc = hashtable_remove(rrc_instance_pP->initial_id2_s1ap_ids, (hash_key_t)ue_initial_id); if (h_rc != HASH_TABLE_OK) { LOG_W(RRC, "S1AP Did not find entry in hashtable initial_id2_s1ap_ids for ue_initial_id %u\n", ue_initial_id); } else { LOG_W(RRC, "S1AP removed entry in hashtable initial_id2_s1ap_ids for ue_initial_id %u\n", ue_initial_id); } } } /*! \fn uint16_t get_next_ue_initial_id(uint8_t mod_id) *\brief provide an UE initial ID for S1AP initial communication. *\param mod_id Instance ID of eNB. *\return the UE initial ID. */ //------------------------------------------------------------------------------ static uint16_t get_next_ue_initial_id( const module_id_t mod_id ) //------------------------------------------------------------------------------ { static uint16_t ue_initial_id[NUMBER_OF_eNB_MAX]; ue_initial_id[mod_id]++; /* Never use UE_INITIAL_ID_INVALID this is the invalid id! */ if (ue_initial_id[mod_id] == UE_INITIAL_ID_INVALID) { ue_initial_id[mod_id]++; } return ue_initial_id[mod_id]; } /*! \fn uint8_t get_UE_index_from_s1ap_ids(uint8_t mod_id, uint16_t ue_initial_id, uint32_t eNB_ue_s1ap_id) *\brief retrieve UE index in the eNB from the UE initial ID if not equal to UE_INDEX_INVALID or *\brief from the eNB_ue_s1ap_id previously transmitted by S1AP. *\param mod_id Instance ID of eNB. *\param ue_initial_id The UE initial ID sent to S1AP. *\param eNB_ue_s1ap_id The value sent by S1AP. *\return the UE index or UE_INDEX_INVALID if not found. */ static struct rrc_eNB_ue_context_s* rrc_eNB_get_ue_context_from_s1ap_ids( const instance_t instanceP, const uint16_t ue_initial_idP, const uint32_t eNB_ue_s1ap_idP ) { rrc_ue_s1ap_ids_t* temp = NULL; temp = rrc_eNB_S1AP_get_ue_ids( &eNB_rrc_inst[ENB_INSTANCE_TO_MODULE_ID(instanceP)], ue_initial_idP, eNB_ue_s1ap_idP); if (temp) { return rrc_eNB_get_ue_context( &eNB_rrc_inst[ENB_INSTANCE_TO_MODULE_ID(instanceP)], temp->ue_rnti); } return NULL; } /*! \fn e_SecurityAlgorithmConfig__cipheringAlgorithm rrc_eNB_select_ciphering(uint16_t algorithms) *\brief analyze available encryption algorithms bit mask and return the relevant one. *\param algorithms The bit mask of available algorithms received from S1AP. *\return the selected algorithm. */ static CipheringAlgorithm_r12_t rrc_eNB_select_ciphering(uint16_t algorithms) { //#warning "Forced return SecurityAlgorithmConfig__cipheringAlgorithm_eea0, to be deleted in future" return CipheringAlgorithm_r12_eea0; if (algorithms & S1AP_ENCRYPTION_EEA2_MASK) { return CipheringAlgorithm_r12_eea2; } if (algorithms & S1AP_ENCRYPTION_EEA1_MASK) { return CipheringAlgorithm_r12_eea1; } return CipheringAlgorithm_r12_eea0; } /*! \fn e_SecurityAlgorithmConfig__integrityProtAlgorithm rrc_eNB_select_integrity(uint16_t algorithms) *\brief analyze available integrity algorithms bit mask and return the relevant one. *\param algorithms The bit mask of available algorithms received from S1AP. *\return the selected algorithm. */ static e_SecurityAlgorithmConfig__integrityProtAlgorithm rrc_eNB_select_integrity(uint16_t algorithms) { if (algorithms & S1AP_INTEGRITY_EIA2_MASK) { return SecurityAlgorithmConfig__integrityProtAlgorithm_eia2; } if (algorithms & S1AP_INTEGRITY_EIA1_MASK) { return SecurityAlgorithmConfig__integrityProtAlgorithm_eia1; } return INTEGRITY_ALGORITHM_NONE; } /*! \fn int rrc_eNB_process_security (uint8_t mod_id, uint8_t ue_index, security_capabilities_t *security_capabilities) *\brief save and analyze available security algorithms bit mask and select relevant ones. *\param mod_id Instance ID of eNB. *\param ue_index Instance ID of UE in the eNB. *\param security_capabilities The security capabilities received from S1AP. *\return TRUE if at least one algorithm has been changed else FALSE. */ static int rrc_eNB_process_security( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, security_capabilities_t* security_capabilities_pP ) { boolean_t changed = FALSE; CipheringAlgorithm_r12_t cipheringAlgorithm; e_SecurityAlgorithmConfig__integrityProtAlgorithm integrityProtAlgorithm; /* Save security parameters */ ue_context_pP->ue_context.security_capabilities = *security_capabilities_pP; // translation LOG_D(RRC, "[eNB %d] NAS security_capabilities.encryption_algorithms %u AS ciphering_algorithm %lu NAS security_capabilities.integrity_algorithms %u AS integrity_algorithm %u\n", ctxt_pP->module_id, ue_context_pP->ue_context.security_capabilities.encryption_algorithms, (unsigned long)ue_context_pP->ue_context.ciphering_algorithm, ue_context_pP->ue_context.security_capabilities.integrity_algorithms, ue_context_pP->ue_context.integrity_algorithm); /* Select relevant algorithms */ cipheringAlgorithm = rrc_eNB_select_ciphering (ue_context_pP->ue_context.security_capabilities.encryption_algorithms); if (ue_context_pP->ue_context.ciphering_algorithm != cipheringAlgorithm) { ue_context_pP->ue_context.ciphering_algorithm = cipheringAlgorithm; changed = TRUE; } integrityProtAlgorithm = rrc_eNB_select_integrity (ue_context_pP->ue_context.security_capabilities.integrity_algorithms); if (ue_context_pP->ue_context.integrity_algorithm != integrityProtAlgorithm) { ue_context_pP->ue_context.integrity_algorithm = integrityProtAlgorithm; changed = TRUE; } LOG_I (RRC, "[eNB %d][UE %x] Selected security algorithms (%p): %lx, %x, %s\n", ctxt_pP->module_id, ue_context_pP->ue_context.rnti, security_capabilities_pP, (unsigned long)cipheringAlgorithm, integrityProtAlgorithm, changed ? "changed" : "same"); return changed; } /*! \fn void process_eNB_security_key (const protocol_ctxt_t* const ctxt_pP, eNB_RRC_UE_t * const ue_context_pP, uint8_t *security_key) *\brief save security key. *\param ctxt_pP Running context. *\param ue_context_pP UE context. *\param security_key_pP The security key received from S1AP. */ //------------------------------------------------------------------------------ static void process_eNB_security_key ( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, uint8_t* security_key_pP ) //------------------------------------------------------------------------------ { #if defined(ENABLE_SECURITY) char ascii_buffer[65]; uint8_t i; /* Saves the security key */ memcpy (ue_context_pP->ue_context.kenb, security_key_pP, SECURITY_KEY_LENGTH); memset (ue_context_pP->ue_context.nh, 0, SECURITY_KEY_LENGTH); ue_context_pP->ue_context.nh_ncc = -1; for (i = 0; i < 32; i++) { sprintf(&ascii_buffer[2 * i], "%02X", ue_context_pP->ue_context.kenb[i]); } ascii_buffer[2 * i] = '\0'; LOG_I (RRC, "[eNB %d][UE %x] Saved security key %s\n", ctxt_pP->module_id, ue_context_pP->ue_context.rnti, ascii_buffer); #endif } //------------------------------------------------------------------------------ static void rrc_pdcp_config_security( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, const uint8_t send_security_mode_command ) //------------------------------------------------------------------------------ { #if defined(ENABLE_SECURITY) SRB_ToAddModList_t* SRB_configList = ue_context_pP->ue_context.SRB_configList; uint8_t *kRRCenc = NULL; uint8_t *kRRCint = NULL; uint8_t *kUPenc = NULL; pdcp_t *pdcp_p = NULL; static int print_keys= 1; hashtable_rc_t h_rc; hash_key_t key; /* Derive the keys from kenb */ if (SRB_configList != NULL) { derive_key_up_enc(ue_context_pP->ue_context.ciphering_algorithm, ue_context_pP->ue_context.kenb, &kUPenc); } derive_key_rrc_enc(ue_context_pP->ue_context.ciphering_algorithm, ue_context_pP->ue_context.kenb, &kRRCenc); derive_key_rrc_int(ue_context_pP->ue_context.integrity_algorithm, ue_context_pP->ue_context.kenb, &kRRCint); #define DEBUG_SECURITY 1 #if defined (DEBUG_SECURITY) #undef msg #define msg printf if (print_keys ==1 ) { print_keys =0; int i; msg("\nKeNB:"); for(i = 0; i < 32; i++) { msg("%02x", ue_context_pP->ue_context.kenb[i]); } msg("\n"); msg("\nKRRCenc:"); for(i = 0; i < 32; i++) { msg("%02x", kRRCenc[i]); } msg("\n"); msg("\nKRRCint:"); for(i = 0; i < 32; i++) { msg("%02x", kRRCint[i]); } msg("\n"); } #endif //DEBUG_SECURITY key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, DCCH, SRB_FLAG_YES); h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p); if (h_rc == HASH_TABLE_OK) { pdcp_config_set_security( ctxt_pP, pdcp_p, DCCH, DCCH+2, (send_security_mode_command == TRUE) ? 0 | (ue_context_pP->ue_context.integrity_algorithm << 4) : (ue_context_pP->ue_context.ciphering_algorithm ) | (ue_context_pP->ue_context.integrity_algorithm << 4), kRRCenc, kRRCint, kUPenc); } else { LOG_E(RRC, PROTOCOL_RRC_CTXT_UE_FMT"Could not get PDCP instance for SRB DCCH %u\n", PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP), DCCH); } #endif } //------------------------------------------------------------------------------ void rrc_eNB_send_S1AP_INITIAL_CONTEXT_SETUP_RESP( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP ) //------------------------------------------------------------------------------ { MessageDef *msg_p = NULL; int e_rab; int e_rabs_done = 0; int e_rabs_failed = 0; msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_INITIAL_CONTEXT_SETUP_RESP); S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; for (e_rab = 0; e_rab < ue_context_pP->ue_context.nb_of_e_rabs; e_rab++) { if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_DONE) { e_rabs_done++; S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id; // TODO add other information from S1-U when it will be integrated S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab]; S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr = ue_context_pP->ue_context.enb_gtp_addrs[e_rab]; S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr.length = 4; ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_ESTABLISHED; } else { e_rabs_failed++; ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_FAILED; S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).e_rabs_failed[e_rab].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id; // TODO add cause when it will be integrated } } MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, (const char *)&S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p), sizeof(s1ap_initial_context_setup_resp_t), MSC_AS_TIME_FMT" INITIAL_CONTEXT_SETUP_RESP UE %X eNB_ue_s1ap_id %u e_rabs:%u succ %u fail", MSC_AS_TIME_ARGS(ctxt_pP), ue_context_pP->ue_id_rnti, S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).eNB_ue_s1ap_id, e_rabs_done, e_rabs_failed); S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).nb_of_e_rabs = e_rabs_done; S1AP_INITIAL_CONTEXT_SETUP_RESP (msg_p).nb_of_e_rabs_failed = e_rabs_failed; itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p); } # endif //------------------------------------------------------------------------------ void rrc_eNB_send_S1AP_UPLINK_NAS( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, UL_DCCH_Message_t* const ul_dcch_msg ) //------------------------------------------------------------------------------ { #if defined(ENABLE_ITTI) { ULInformationTransfer_t *ulInformationTransfer = &ul_dcch_msg->message.choice.c1.choice.ulInformationTransfer; if ((ulInformationTransfer->criticalExtensions.present == ULInformationTransfer__criticalExtensions_PR_c1) && (ulInformationTransfer->criticalExtensions.choice.c1.present == ULInformationTransfer__criticalExtensions__c1_PR_ulInformationTransfer_r8) && (ulInformationTransfer->criticalExtensions.choice.c1.choice.ulInformationTransfer_r8.dedicatedInfoType.present == ULInformationTransfer_r8_IEs__dedicatedInfoType_PR_dedicatedInfoNAS)) { /* This message hold a dedicated info NAS payload, forward it to NAS */ struct ULInformationTransfer_r8_IEs__dedicatedInfoType *dedicatedInfoType = &ulInformationTransfer->criticalExtensions.choice.c1.choice.ulInformationTransfer_r8.dedicatedInfoType; uint32_t pdu_length; uint8_t *pdu_buffer; MessageDef *msg_p; pdu_length = dedicatedInfoType->choice.dedicatedInfoNAS.size; pdu_buffer = dedicatedInfoType->choice.dedicatedInfoNAS.buf; msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UPLINK_NAS); S1AP_UPLINK_NAS (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; S1AP_UPLINK_NAS (msg_p).nas_pdu.length = pdu_length; S1AP_UPLINK_NAS (msg_p).nas_pdu.buffer = pdu_buffer; itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p); } } #else { ULInformationTransfer_t *ulInformationTransfer; ulInformationTransfer = &ul_dcch_msg->message.choice.c1.choice. ulInformationTransfer; if (ulInformationTransfer->criticalExtensions.present == ULInformationTransfer__criticalExtensions_PR_c1) { if (ulInformationTransfer->criticalExtensions.choice.c1.present == ULInformationTransfer__criticalExtensions__c1_PR_ulInformationTransfer_r8) { ULInformationTransfer_r8_IEs_t *ulInformationTransferR8; ulInformationTransferR8 = &ulInformationTransfer->criticalExtensions.choice. c1.choice.ulInformationTransfer_r8; if (ulInformationTransferR8->dedicatedInfoType. present == ULInformationTransfer_r8_IEs__dedicatedInfoType_PR_dedicatedInfoNAS) s1ap_eNB_new_data_request (mod_id, ue_index, ulInformationTransferR8-> dedicatedInfoType.choice. dedicatedInfoNAS.buf, ulInformationTransferR8-> dedicatedInfoType.choice. dedicatedInfoNAS.size); } } } #endif } //------------------------------------------------------------------------------ void rrc_eNB_send_S1AP_UE_CAPABILITIES_IND( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, UL_DCCH_Message_t* ul_dcch_msg ) //------------------------------------------------------------------------------ { UECapabilityInformation_t *ueCapabilityInformation = &ul_dcch_msg->message.choice.c1.choice.ueCapabilityInformation; /* 4096 is arbitrary, should be big enough */ unsigned char buf[4096]; unsigned char *buf2; UERadioAccessCapabilityInformation_t rac; if (ueCapabilityInformation->criticalExtensions.present != UECapabilityInformation__criticalExtensions_PR_c1 || ueCapabilityInformation->criticalExtensions.choice.c1.present != UECapabilityInformation__criticalExtensions__c1_PR_ueCapabilityInformation_r8) { LOG_E(RRC, "[eNB %d][UE %x] bad UE capabilities\n", ctxt_pP->module_id, ue_context_pP->ue_context.rnti); return; } asn_enc_rval_t ret = uper_encode_to_buffer(&asn_DEF_UECapabilityInformation, ueCapabilityInformation, buf, 4096); if (ret.encoded == -1) abort(); memset(&rac, 0, sizeof(UERadioAccessCapabilityInformation_t)); rac.criticalExtensions.present = UERadioAccessCapabilityInformation__criticalExtensions_PR_c1; rac.criticalExtensions.choice.c1.present = UERadioAccessCapabilityInformation__criticalExtensions__c1_PR_ueRadioAccessCapabilityInformation_r8; rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.ue_RadioAccessCapabilityInfo.buf = buf; rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.ue_RadioAccessCapabilityInfo.size = (ret.encoded+7)/8; rac.criticalExtensions.choice.c1.choice.ueRadioAccessCapabilityInformation_r8.nonCriticalExtension = NULL; /* 8192 is arbitrary, should be big enough */ buf2 = malloc16(8192); if (buf2 == NULL) abort(); ret = uper_encode_to_buffer(&asn_DEF_UERadioAccessCapabilityInformation, &rac, buf2, 8192); if (ret.encoded == -1) abort(); MessageDef *msg_p; msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UE_CAPABILITIES_IND); S1AP_UE_CAPABILITIES_IND (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; S1AP_UE_CAPABILITIES_IND (msg_p).ue_radio_cap.length = (ret.encoded+7)/8; S1AP_UE_CAPABILITIES_IND (msg_p).ue_radio_cap.buffer = buf2; itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p); } //------------------------------------------------------------------------------ void rrc_eNB_send_S1AP_NAS_FIRST_REQ( const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, RRCConnectionSetupComplete_r8_IEs_t* rrcConnectionSetupComplete ) //------------------------------------------------------------------------------ { #if defined(ENABLE_ITTI) { MessageDef* message_p = NULL; rrc_ue_s1ap_ids_t* rrc_ue_s1ap_ids_p = NULL; hashtable_rc_t h_rc; message_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_NAS_FIRST_REQ); memset(&message_p->ittiMsg.s1ap_nas_first_req, 0, sizeof(s1ap_nas_first_req_t)); ue_context_pP->ue_context.ue_initial_id = get_next_ue_initial_id (ctxt_pP->module_id); S1AP_NAS_FIRST_REQ (message_p).ue_initial_id = ue_context_pP->ue_context.ue_initial_id; rrc_ue_s1ap_ids_p = malloc(sizeof(*rrc_ue_s1ap_ids_p)); rrc_ue_s1ap_ids_p->ue_initial_id = ue_context_pP->ue_context.ue_initial_id; rrc_ue_s1ap_ids_p->eNB_ue_s1ap_id = UE_INITIAL_ID_INVALID; rrc_ue_s1ap_ids_p->ue_rnti = ctxt_pP->rnti; h_rc = hashtable_insert(eNB_rrc_inst[ctxt_pP->module_id].initial_id2_s1ap_ids, (hash_key_t)ue_context_pP->ue_context.ue_initial_id, rrc_ue_s1ap_ids_p); if (h_rc != HASH_TABLE_OK) { LOG_E(S1AP, "[eNB %d] Error while hashtable_insert in initial_id2_s1ap_ids ue_initial_id %u\n", ctxt_pP->module_id, ue_context_pP->ue_context.ue_initial_id); } /* Assume that cause is coded in the same way in RRC and S1ap, just check that the value is in S1ap range */ AssertFatal(ue_context_pP->ue_context.establishment_cause < RRC_CAUSE_LAST, "Establishment cause invalid (%jd/%d) for eNB %d!", ue_context_pP->ue_context.establishment_cause, RRC_CAUSE_LAST, ctxt_pP->module_id); S1AP_NAS_FIRST_REQ (message_p).establishment_cause = ue_context_pP->ue_context.establishment_cause; /* Forward NAS message */S1AP_NAS_FIRST_REQ (message_p).nas_pdu.buffer = rrcConnectionSetupComplete->dedicatedInfoNAS.buf; S1AP_NAS_FIRST_REQ (message_p).nas_pdu.length = rrcConnectionSetupComplete->dedicatedInfoNAS.size; /* Fill UE identities with available information */ { S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask = UE_IDENTITIES_NONE; if (ue_context_pP->ue_context.Initialue_identity_s_TMSI.presence) { /* Fill s-TMSI */ UE_S_TMSI* s_TMSI = &ue_context_pP->ue_context.Initialue_identity_s_TMSI; S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask |= UE_IDENTITIES_s_tmsi; S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.mme_code = s_TMSI->mme_code; S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.m_tmsi = s_TMSI->m_tmsi; LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ with s_TMSI: MME code %u M-TMSI %u ue %x\n", ctxt_pP->module_id, S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.mme_code, S1AP_NAS_FIRST_REQ (message_p).ue_identity.s_tmsi.m_tmsi, ue_context_pP->ue_context.rnti); } if (rrcConnectionSetupComplete->registeredMME != NULL) { /* Fill GUMMEI */ struct RegisteredMME *r_mme = rrcConnectionSetupComplete->registeredMME; //int selected_plmn_identity = rrcConnectionSetupComplete->selectedPLMN_Identity; S1AP_NAS_FIRST_REQ (message_p).ue_identity.presenceMask |= UE_IDENTITIES_gummei; if (r_mme->plmn_Identity != NULL) { if ((r_mme->plmn_Identity->mcc != NULL) && (r_mme->plmn_Identity->mcc->list.count > 0)) { /* Use first indicated PLMN MCC if it is defined */ S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc = *r_mme->plmn_Identity->mcc->list.array[0]; LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI MCC %u ue %x\n", ctxt_pP->module_id, S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc, ue_context_pP->ue_context.rnti); } if (r_mme->plmn_Identity->mnc.list.count > 0) { /* Use first indicated PLMN MNC if it is defined */ S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc = *r_mme->plmn_Identity->mnc.list.array[0]; LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI MNC %u ue %x\n", ctxt_pP->module_id, S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc, ue_context_pP->ue_context.rnti); } } else { const Enb_properties_array_t *enb_properties_p = NULL; enb_properties_p = enb_config_get(); // actually the eNB configuration contains only one PLMN (can be up to 6) S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mcc = enb_properties_p->properties[ctxt_pP->module_id]->mcc; S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc = enb_properties_p->properties[ctxt_pP->module_id]->mnc; S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mnc_len = enb_properties_p->properties[ctxt_pP->module_id]->mnc_digit_length; } S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_code = BIT_STRING_to_uint8 (&r_mme->mmec); S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_group_id = BIT_STRING_to_uint16 (&r_mme->mmegi); MSC_LOG_TX_MESSAGE( MSC_S1AP_ENB, MSC_S1AP_MME, (const char *)&message_p->ittiMsg.s1ap_nas_first_req, sizeof(s1ap_nas_first_req_t), MSC_AS_TIME_FMT" S1AP_NAS_FIRST_REQ eNB %u UE %x", MSC_AS_TIME_ARGS(ctxt_pP), ctxt_pP->module_id, ctxt_pP->rnti); LOG_I(S1AP, "[eNB %d] Build S1AP_NAS_FIRST_REQ adding in s_TMSI: GUMMEI mme_code %u mme_group_id %u ue %x\n", ctxt_pP->module_id, S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_code, S1AP_NAS_FIRST_REQ (message_p).ue_identity.gummei.mme_group_id, ue_context_pP->ue_context.rnti); } } itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, message_p); } #else { s1ap_eNB_new_data_request ( ctxt_pP->module_id, ue_context_pP, rrcConnectionSetupComplete->dedicatedInfoNAS. buf, rrcConnectionSetupComplete->dedicatedInfoNAS. size); } #endif } # if defined(ENABLE_ITTI) //------------------------------------------------------------------------------ int rrc_eNB_process_S1AP_DOWNLINK_NAS( MessageDef* msg_p, const char* msg_name, instance_t instance, mui_t* rrc_eNB_mui ) //------------------------------------------------------------------------------ { uint16_t ue_initial_id; uint32_t eNB_ue_s1ap_id; uint32_t length; uint8_t *buffer; uint8_t srb_id; struct rrc_eNB_ue_context_s* ue_context_p = NULL; protocol_ctxt_t ctxt; ue_initial_id = S1AP_DOWNLINK_NAS (msg_p).ue_initial_id; eNB_ue_s1ap_id = S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id); LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d\n", instance, msg_name, ue_initial_id, eNB_ue_s1ap_id); if (ue_context_p == NULL) { MSC_LOG_RX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, NULL, 0, MSC_AS_TIME_FMT" DOWNLINK-NAS UE initial id %u eNB_ue_s1ap_id %u", 0,0,//MSC_AS_TIME_ARGS(ctxt_pP), ue_initial_id, eNB_ue_s1ap_id); /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p; LOG_W(RRC, "[eNB %d] In S1AP_DOWNLINK_NAS: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id); msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_NAS_NON_DELIVERY_IND); S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).nas_pdu.length = S1AP_DOWNLINK_NAS (msg_p).nas_pdu.length; S1AP_NAS_NON_DELIVERY_IND (msg_fail_p).nas_pdu.buffer = S1AP_DOWNLINK_NAS (msg_p).nas_pdu.buffer; // TODO add failure cause when defined! MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, (const char *)NULL, 0, MSC_AS_TIME_FMT" S1AP_NAS_NON_DELIVERY_IND UE initial id %u eNB_ue_s1ap_id %u (ue ctxt !found)", 0,0,//MSC_AS_TIME_ARGS(ctxt_pP), ue_initial_id, eNB_ue_s1ap_id); itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p); return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); srb_id = ue_context_p->ue_context.Srb2.Srb_info.Srb_id; /* Is it the first income from S1AP ? */ if (ue_context_p->ue_context.eNB_ue_s1ap_id == 0) { ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id; } MSC_LOG_RX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, (const char *)NULL, 0, MSC_AS_TIME_FMT" DOWNLINK-NAS UE initial id %u eNB_ue_s1ap_id %u", 0,0,//MSC_AS_TIME_ARGS(ctxt_pP), ue_initial_id, S1AP_DOWNLINK_NAS (msg_p).eNB_ue_s1ap_id); /* Create message for PDCP (DLInformationTransfer_t) */ length = do_DLInformationTransfer ( instance, &buffer, rrc_eNB_get_next_transaction_identifier (instance), S1AP_DOWNLINK_NAS (msg_p).nas_pdu.length, S1AP_DOWNLINK_NAS (msg_p).nas_pdu.buffer); #ifdef RRC_MSG_PRINT int i=0; LOG_F(RRC,"[MSG] RRC DL Information Transfer\n"); for (i = 0; i < length; i++) { LOG_F(RRC,"%02x ", ((uint8_t*)buffer)[i]); } LOG_F(RRC,"\n"); #endif /* * switch UL or DL NAS message without RRC piggybacked to SRB2 if active. */ /* Transfer data to PDCP */ rrc_data_req ( &ctxt, srb_id, *rrc_eNB_mui++, SDU_CONFIRM_NO, length, buffer, PDCP_TRANSMISSION_MODE_CONTROL); return (0); } } /*------------------------------------------------------------------------------*/ int rrc_eNB_process_S1AP_INITIAL_CONTEXT_SETUP_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance) { uint16_t ue_initial_id; uint32_t eNB_ue_s1ap_id; //MessageDef *message_gtpv1u_p = NULL; gtpv1u_enb_create_tunnel_req_t create_tunnel_req; gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp; struct rrc_eNB_ue_context_s* ue_context_p = NULL; protocol_ctxt_t ctxt; ue_initial_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).ue_initial_id; eNB_ue_s1ap_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id); LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d, nb_of_e_rabs %d\n", instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs); if (ue_context_p == NULL) { /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p = NULL; LOG_W(RRC, "[eNB %d] In S1AP_INITIAL_CONTEXT_SETUP_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id); msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_INITIAL_CONTEXT_SETUP_FAIL); S1AP_INITIAL_CONTEXT_SETUP_FAIL (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; // TODO add failure cause when defined! itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p); return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).eNB_ue_s1ap_id; /* Save e RAB information for later */ { int i; memset(&create_tunnel_req, 0 , sizeof(create_tunnel_req)); ue_context_p->ue_context.nb_of_e_rabs = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).nb_of_e_rabs; for (i = 0; i < ue_context_p->ue_context.nb_of_e_rabs; i++) { ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_NEW; ue_context_p->ue_context.e_rab[i].param = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i]; create_tunnel_req.eps_bearer_id[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].e_rab_id; create_tunnel_req.sgw_S1u_teid[i] = S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].gtp_teid; memcpy(&create_tunnel_req.sgw_addr[i], &S1AP_INITIAL_CONTEXT_SETUP_REQ (msg_p).e_rab_param[i].sgw_addr, sizeof(transport_layer_addr_t)); } create_tunnel_req.rnti = ue_context_p->ue_context.rnti; // warning put zero above create_tunnel_req.num_tunnels = i; gtpv1u_create_s1u_tunnel( instance, &create_tunnel_req, &create_tunnel_resp); rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP( &ctxt, &create_tunnel_resp); ue_context_p->ue_context.setup_e_rabs=ue_context_p->ue_context.nb_of_e_rabs; } /* TODO parameters yet to process ... */ { // S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr; } rrc_eNB_process_security ( &ctxt, ue_context_p, &S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_capabilities); process_eNB_security_key ( &ctxt, ue_context_p, S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).security_key); { uint8_t send_security_mode_command = TRUE; #ifndef EXMIMO_IOT if ((ue_context_p->ue_context.ciphering_algorithm == SecurityAlgorithmConfig__cipheringAlgorithm_eea0) && (ue_context_p->ue_context.integrity_algorithm == INTEGRITY_ALGORITHM_NONE)) { send_security_mode_command = FALSE; } #endif rrc_pdcp_config_security( &ctxt, ue_context_p, send_security_mode_command); if (send_security_mode_command) { rrc_eNB_generate_SecurityModeCommand ( &ctxt, ue_context_p); send_security_mode_command = FALSE; // apply ciphering after RRC security command mode rrc_pdcp_config_security( &ctxt, ue_context_p, send_security_mode_command); } else { rrc_eNB_generate_UECapabilityEnquiry (&ctxt, ue_context_p); } } return (0); } } /*------------------------------------------------------------------------------*/ int rrc_eNB_process_S1AP_UE_CTXT_MODIFICATION_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance) { uint32_t eNB_ue_s1ap_id; struct rrc_eNB_ue_context_s* ue_context_p = NULL; protocol_ctxt_t ctxt; eNB_ue_s1ap_id = S1AP_UE_CTXT_MODIFICATION_REQ (msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id); if (ue_context_p == NULL) { /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p; LOG_W(RRC, "[eNB %d] In S1AP_UE_CTXT_MODIFICATION_REQ: unknown UE from eNB_ue_s1ap_id (%d)\n", instance, eNB_ue_s1ap_id); msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_UE_CTXT_MODIFICATION_FAIL); S1AP_UE_CTXT_MODIFICATION_FAIL (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; // TODO add failure cause when defined! itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p); return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); /* TODO parameters yet to process ... */ { if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_UE_AMBR) { // S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).ue_ambr; } } if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_UE_SECU_CAP) { if (rrc_eNB_process_security ( &ctxt, ue_context_p, &S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).security_capabilities)) { /* transmit the new security parameters to UE */ rrc_eNB_generate_SecurityModeCommand ( &ctxt, ue_context_p); } } if (S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).present & S1AP_UE_CONTEXT_MODIFICATION_SECURITY_KEY) { process_eNB_security_key ( &ctxt, ue_context_p, S1AP_UE_CTXT_MODIFICATION_REQ(msg_p).security_key); /* TODO reconfigure lower layers... */ } /* Send the response */ { MessageDef *msg_resp_p; msg_resp_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CTXT_MODIFICATION_RESP); S1AP_UE_CTXT_MODIFICATION_RESP(msg_resp_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; itti_send_msg_to_task(TASK_S1AP, instance, msg_resp_p); } return (0); } } /*------------------------------------------------------------------------------*/ int rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_REQ (MessageDef *msg_p, const char *msg_name, instance_t instance) { uint32_t eNB_ue_s1ap_id; struct rrc_eNB_ue_context_s* ue_context_p = NULL; eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_REQ(msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id); if (ue_context_p == NULL) { /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p; LOG_W(RRC, "[eNB %d] In S1AP_UE_CONTEXT_RELEASE_REQ: unknown UE from eNB_ue_s1ap_id (%d)\n", instance, eNB_ue_s1ap_id); msg_fail_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_RESP); /* TODO change message ID. */ S1AP_UE_CONTEXT_RELEASE_RESP(msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; // TODO add failure cause when defined! itti_send_msg_to_task(TASK_S1AP, instance, msg_fail_p); return (-1); } else { /* TODO release context. */ /* Send the response */ { MessageDef *msg_resp_p; msg_resp_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_RESP); S1AP_UE_CONTEXT_RELEASE_RESP(msg_resp_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; itti_send_msg_to_task(TASK_S1AP, instance, msg_resp_p); } return (0); } } //------------------------------------------------------------------------------ void rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_REQ ( const module_id_t enb_mod_idP, const rrc_eNB_ue_context_t* const ue_context_pP, const s1ap_Cause_t causeP, const long cause_valueP ) //------------------------------------------------------------------------------ { if (ue_context_pP == NULL) { LOG_W(RRC, "[eNB] In S1AP_UE_CONTEXT_RELEASE_COMMAND: invalid UE\n"); } else { MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, NULL,0, "0 S1AP_UE_CONTEXT_RELEASE_REQ eNB_ue_s1ap_id 0x%06"PRIX32" ", ue_context_pP->ue_context.eNB_ue_s1ap_id); MessageDef *msg_context_release_req_p = NULL; msg_context_release_req_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_REQ); S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).cause = causeP; S1AP_UE_CONTEXT_RELEASE_REQ(msg_context_release_req_p).cause_value = cause_valueP; itti_send_msg_to_task(TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_mod_idP), msg_context_release_req_p); } } /*------------------------------------------------------------------------------*/ int rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_COMMAND (MessageDef *msg_p, const char *msg_name, instance_t instance) { uint32_t eNB_ue_s1ap_id; protocol_ctxt_t ctxt; struct rrc_eNB_ue_context_s *ue_context_p = NULL; struct rrc_ue_s1ap_ids_s *rrc_ue_s1ap_ids = NULL; eNB_ue_s1ap_id = S1AP_UE_CONTEXT_RELEASE_COMMAND(msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id); if (ue_context_p == NULL) { /* Can not associate this message to an UE index */ MessageDef *msg_complete_p; LOG_W(RRC, "[eNB %d] In S1AP_UE_CONTEXT_RELEASE_COMMAND: unknown UE from eNB_ue_s1ap_id (%d)\n", instance, eNB_ue_s1ap_id); MSC_LOG_EVENT( MSC_RRC_ENB, "0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" context not found", eNB_ue_s1ap_id); MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, NULL,0, "0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" ", eNB_ue_s1ap_id); msg_complete_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_COMPLETE); S1AP_UE_CONTEXT_RELEASE_COMPLETE(msg_complete_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; itti_send_msg_to_task(TASK_S1AP, instance, msg_complete_p); rrc_ue_s1ap_ids = rrc_eNB_S1AP_get_ue_ids( &eNB_rrc_inst[instance], UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id); if (NULL != rrc_ue_s1ap_ids) { rrc_eNB_S1AP_remove_ue_ids( &eNB_rrc_inst[instance], rrc_ue_s1ap_ids); } return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); rrc_eNB_generate_RRCConnectionRelease(&ctxt, ue_context_p); /* LOG_W(RRC, "[eNB %d] In S1AP_UE_CONTEXT_RELEASE_COMMAND: TODO call rrc_eNB_connection_release for eNB %d\n", instance, eNB_ue_s1ap_id); */ { int e_rab; //int mod_id = 0; MessageDef *msg_delete_tunnels_p = NULL; MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_GTPU_ENB, NULL,0, "0 GTPV1U_ENB_DELETE_TUNNEL_REQ rnti %x ", eNB_ue_s1ap_id); msg_delete_tunnels_p = itti_alloc_new_message(TASK_RRC_ENB, GTPV1U_ENB_DELETE_TUNNEL_REQ); memset(>PV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p), 0, sizeof(GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p))); // do not wait response GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).rnti = ue_context_p->ue_context.rnti; for (e_rab = 0; e_rab < ue_context_p->ue_context.nb_of_e_rabs; e_rab++) { GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).eps_bearer_id[GTPV1U_ENB_DELETE_TUNNEL_REQ(msg_delete_tunnels_p).num_erab++] = ue_context_p->ue_context.enb_gtp_ebi[e_rab]; // erase data ue_context_p->ue_context.enb_gtp_teid[e_rab] = 0; memset(&ue_context_p->ue_context.enb_gtp_addrs[e_rab], 0, sizeof(ue_context_p->ue_context.enb_gtp_addrs[e_rab])); ue_context_p->ue_context.enb_gtp_ebi[e_rab] = 0; } itti_send_msg_to_task(TASK_GTPV1_U, instance, msg_delete_tunnels_p); MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, NULL,0, "0 S1AP_UE_CONTEXT_RELEASE_COMPLETE eNB_ue_s1ap_id 0x%06"PRIX32" ", eNB_ue_s1ap_id); MessageDef *msg_complete_p = NULL; msg_complete_p = itti_alloc_new_message(TASK_RRC_ENB, S1AP_UE_CONTEXT_RELEASE_COMPLETE); S1AP_UE_CONTEXT_RELEASE_COMPLETE(msg_complete_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; itti_send_msg_to_task(TASK_S1AP, instance, msg_complete_p); rrc_ue_s1ap_ids = rrc_eNB_S1AP_get_ue_ids( &eNB_rrc_inst[instance], UE_INITIAL_ID_INVALID, eNB_ue_s1ap_id); if (NULL != rrc_ue_s1ap_ids) { rrc_eNB_S1AP_remove_ue_ids( &eNB_rrc_inst[instance], rrc_ue_s1ap_ids); } } return (0); } } int rrc_eNB_process_S1AP_E_RAB_SETUP_REQ(MessageDef *msg_p, const char *msg_name, instance_t instance) { uint16_t ue_initial_id; uint32_t eNB_ue_s1ap_id; gtpv1u_enb_create_tunnel_req_t create_tunnel_req; gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp; struct rrc_eNB_ue_context_s* ue_context_p = NULL; protocol_ctxt_t ctxt; ue_initial_id = S1AP_E_RAB_SETUP_REQ (msg_p).ue_initial_id; eNB_ue_s1ap_id = S1AP_E_RAB_SETUP_REQ (msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id); LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d, nb_of_e_rabs %d\n", instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_E_RAB_SETUP_REQ (msg_p).nb_e_rabs_tosetup); if (ue_context_p == NULL) { /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p = NULL; LOG_W(RRC, "[eNB %d] In S1AP_E_RAB_SETUP_REQ: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id); msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_SETUP_REQUEST_FAIL); S1AP_E_RAB_SETUP_REQ (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; // TODO add failure cause when defined! itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p); return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_E_RAB_SETUP_REQ (msg_p).eNB_ue_s1ap_id; /* Save e RAB information for later */ { int i; memset(&create_tunnel_req, 0 , sizeof(create_tunnel_req)); uint8_t nb_e_rabs_tosetup = S1AP_E_RAB_SETUP_REQ (msg_p).nb_e_rabs_tosetup; // keep the previous bearer // the index for the rec for (i = 0; i < nb_e_rabs_tosetup; i++) { if (ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].status == E_RAB_STATUS_DONE) LOG_W(RRC,"E-RAB already configured, reconfiguring\n"); ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].status = E_RAB_STATUS_NEW; ue_context_p->ue_context.e_rab[i+ue_context_p->ue_context.setup_e_rabs].param = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i]; create_tunnel_req.eps_bearer_id[i] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].e_rab_id; create_tunnel_req.sgw_S1u_teid[i] = S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].gtp_teid; memcpy(&create_tunnel_req.sgw_addr[i], & S1AP_E_RAB_SETUP_REQ (msg_p).e_rab_setup_params[i].sgw_addr, sizeof(transport_layer_addr_t)); LOG_I(RRC,"E_RAB setup REQ: local index %d teid %u, eps id %d \n", i+ue_context_p->ue_context.setup_e_rabs, create_tunnel_req.sgw_S1u_teid[i], create_tunnel_req.eps_bearer_id[i] ); } ue_context_p->ue_context.nb_of_e_rabs=nb_e_rabs_tosetup; create_tunnel_req.rnti = ue_context_p->ue_context.rnti; // warning put zero above create_tunnel_req.num_tunnels = i; // NN: not sure if we should create a new tunnel: need to check teid, etc. gtpv1u_create_s1u_tunnel( instance, &create_tunnel_req, &create_tunnel_resp); rrc_eNB_process_GTPV1U_CREATE_TUNNEL_RESP( &ctxt, &create_tunnel_resp); ue_context_p->ue_context.setup_e_rabs+=nb_e_rabs_tosetup; } /* TODO parameters yet to process ... */ { // S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p).ue_ambr; } rrc_eNB_generate_dedicatedRRCConnectionReconfiguration(&ctxt, ue_context_p, 0); return (0); } } /*NN: careful about the typcast of xid (long -> uint8_t*/ int rrc_eNB_send_S1AP_E_RAB_SETUP_RESP(const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP, uint8_t xid ){ MessageDef *msg_p = NULL; int e_rab; int e_rabs_done = 0; int e_rabs_failed = 0; msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_E_RAB_SETUP_RESP); S1AP_E_RAB_SETUP_RESP (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; for (e_rab = 0; e_rab < ue_context_pP->ue_context.setup_e_rabs ; e_rab++) { /* only respond to the corresponding transaction */ //if (((xid+1)%4) == ue_context_pP->ue_context.e_rab[e_rab].xid) { if (xid == ue_context_pP->ue_context.e_rab[e_rab].xid) { if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_DONE) { S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id; // TODO add other information from S1-U when it will be integrated S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab]; S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr = ue_context_pP->ue_context.enb_gtp_addrs[e_rab]; //S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rab].eNB_addr.length += 4; ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_ESTABLISHED; LOG_I (RRC,"enb_gtp_addr (msg index %d, e_rab index %d, status %d, xid %d): nb_of_e_rabs %d, e_rab_id %d, teid: %u, addr: %d.%d.%d.%d \n ", e_rabs_done, e_rab, ue_context_pP->ue_context.e_rab[e_rab].status, xid, ue_context_pP->ue_context.nb_of_e_rabs, S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].e_rab_id, S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].gtp_teid, S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[0], S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[1], S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[2], S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs[e_rabs_done].eNB_addr.buffer[3]); e_rabs_done++; } else if ((ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_NEW) || (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_ESTABLISHED)){ LOG_D (RRC,"E-RAB is NEW or already ESTABLISHED\n"); }else { /* to be improved */ ue_context_pP->ue_context.e_rab[e_rab].status = E_RAB_STATUS_FAILED; S1AP_E_RAB_SETUP_RESP (msg_p).e_rabs_failed[e_rabs_failed].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id; e_rabs_failed++; // TODO add cause when it will be integrated } S1AP_E_RAB_SETUP_RESP (msg_p).nb_of_e_rabs = e_rabs_done; S1AP_E_RAB_SETUP_RESP (msg_p).nb_of_e_rabs_failed = e_rabs_failed; // NN: add conditions for e_rabs_failed if ((e_rabs_done > 0) ){ LOG_I(RRC,"S1AP_E_RAB_SETUP_RESP: sending the message: nb_of_erabs %d, total e_rabs %d, index %d\n", ue_context_pP->ue_context.nb_of_e_rabs, ue_context_pP->ue_context.setup_e_rabs, e_rab); MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, (const char *)&S1AP_E_RAB_SETUP_RESP (msg_p), sizeof(s1ap_e_rab_setup_resp_t), MSC_AS_TIME_FMT" E_RAB_SETUP_RESP UE %X eNB_ue_s1ap_id %u e_rabs:%u succ %u fail", MSC_AS_TIME_ARGS(ctxt_pP), ue_context_pP->ue_id_rnti, S1AP_E_RAB_SETUP_RESP (msg_p).eNB_ue_s1ap_id, e_rabs_done, e_rabs_failed); itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p); } } else { /*debug info for the xid */ LOG_D(RRC,"xid does not corresponds (context e_rab index %d, status %d, xid %d/%d) \n ", e_rab, ue_context_pP->ue_context.e_rab[e_rab].status, xid, ue_context_pP->ue_context.e_rab[e_rab].xid); } } return 0; } /*NN: careful about the typcast of xid (long -> uint8_t*/ int rrc_eNB_send_PATH_SWITCH_REQ(const protocol_ctxt_t* const ctxt_pP, rrc_eNB_ue_context_t* const ue_context_pP){ MessageDef *msg_p = NULL; int e_rab; int e_rabs_done = 0; msg_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_PATH_SWITCH_REQ); S1AP_PATH_SWITCH_REQ (msg_p).eNB_ue_s1ap_id = ue_context_pP->ue_context.eNB_ue_s1ap_id; S1AP_PATH_SWITCH_REQ (msg_p).security_capabilities.encryption_algorithms=ue_context_pP->ue_context.security_capabilities.encryption_algorithms; S1AP_PATH_SWITCH_REQ (msg_p).security_capabilities.integrity_algorithms=ue_context_pP->ue_context.security_capabilities.integrity_algorithms; // the context for UE to be handedover is obtained through ho_req message for (e_rab = 0; e_rab < ue_context_pP->ue_context.setup_e_rabs ; e_rab++) { if (ue_context_pP->ue_context.e_rab[e_rab].status == E_RAB_STATUS_ESTABLISHED) { S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].e_rab_id = ue_context_pP->ue_context.e_rab[e_rab].param.e_rab_id; S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].gtp_teid = ue_context_pP->ue_context.enb_gtp_teid[e_rab]; S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].eNB_addr = ue_context_pP->ue_context.enb_gtp_addrs[e_rab]; LOG_I (RRC,"enb_gtp_addr (msg index %d, e_rab index %d, status %d): nb_of_e_rabs %d, e_rab_id %d, teid: %u, addr: %d.%d.%d.%d \n ", e_rabs_done, e_rab, ue_context_pP->ue_context.e_rab[e_rab].status, ue_context_pP->ue_context.nb_of_e_rabs, S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].e_rab_id, S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].gtp_teid, S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].eNB_addr.buffer[0], S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].eNB_addr.buffer[1], S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].eNB_addr.buffer[2], S1AP_PATH_SWITCH_REQ (msg_p).e_rabs_tobeswitched[e_rabs_done].eNB_addr.buffer[3]); e_rabs_done++; } S1AP_PATH_SWITCH_REQ (msg_p).nb_of_e_rabs = e_rabs_done; // NN: add conditions for e_rabs_failed if ((e_rabs_done > 0) ){ LOG_I(RRC,"S1AP_PATH_SWITCH_REQ: sending the message: nb_of_erabstobeswitched %d, total e_rabs %d, index %d\n", ue_context_pP->ue_context.nb_of_e_rabs, ue_context_pP->ue_context.setup_e_rabs, e_rab); MSC_LOG_TX_MESSAGE( MSC_RRC_ENB, MSC_S1AP_ENB, (const char *)&S1AP_PATH_SWITCH_REQ (msg_p), sizeof(s1ap_path_switch_req_t), MSC_AS_TIME_FMT" PATH_SWITCH_REQ UE %X eNB_ue_s1ap_id %u e_rabs:%u succ", MSC_AS_TIME_ARGS(ctxt_pP), ue_context_pP->ue_id_rnti, S1AP_PATH_SWITCH_REQ (msg_p).eNB_ue_s1ap_id, e_rabs_done); itti_send_msg_to_task (TASK_S1AP, ctxt_pP->instance, msg_p); } } return 0; } int rrc_eNB_process_S1AP_PATH_SWITCH_REQ_ACK (MessageDef *msg_p, const char *msg_name, instance_t instance) { uint16_t ue_initial_id; uint32_t eNB_ue_s1ap_id; gtpv1u_enb_create_tunnel_req_t create_tunnel_req; gtpv1u_enb_create_tunnel_resp_t create_tunnel_resp; gtpv1u_enb_delete_tunnel_req_t delete_tunnel_req; struct rrc_eNB_ue_context_s* ue_context_p = NULL; protocol_ctxt_t ctxt; int i; ue_initial_id = S1AP_E_RAB_SETUP_REQ (msg_p).ue_initial_id; //mme_ue_s1ap_id = S1AP_PATH_SWITCH_REQ_ACK (msg_p).mme_ue_s1ap_id; eNB_ue_s1ap_id = S1AP_PATH_SWITCH_REQ_ACK (msg_p).eNB_ue_s1ap_id; ue_context_p = rrc_eNB_get_ue_context_from_s1ap_ids(instance, ue_initial_id, eNB_ue_s1ap_id); LOG_I(RRC, "[eNB %d] Received %s: ue_initial_id %d, eNB_ue_s1ap_id %d, nb_of_e_rabs %d\n", instance, msg_name, ue_initial_id, eNB_ue_s1ap_id, S1AP_E_RAB_SETUP_REQ (msg_p).nb_e_rabs_tosetup); if (ue_context_p == NULL) { /* Can not associate this message to an UE index, send a failure to S1AP and discard it! */ MessageDef *msg_fail_p = NULL; LOG_W(RRC, "[eNB %d] In S1AP_PATH_SWITCH_REQ_ACK: unknown UE from S1AP ids (%d, %d)\n", instance, ue_initial_id, eNB_ue_s1ap_id); //msg_fail_p = itti_alloc_new_message (TASK_RRC_ENB, S1AP_PATH_SWITCH_REQ_ACK_FAIL); //S1AP_PATH_SWITCH_REQ_ACK (msg_fail_p).eNB_ue_s1ap_id = eNB_ue_s1ap_id; // TODO add failure cause when defined! //itti_send_msg_to_task (TASK_S1AP, instance, msg_fail_p); return (-1); } else { PROTOCOL_CTXT_SET_BY_INSTANCE(&ctxt, instance, ENB_FLAG_YES, ue_context_p->ue_context.rnti, 0, 0); ue_context_p->ue_context.eNB_ue_s1ap_id = S1AP_PATH_SWITCH_REQ_ACK (msg_p).eNB_ue_s1ap_id; /* Save e RAB information for later */ { for (i = 0; i < ue_context_p->ue_context.setup_e_rabs; // go over total number of e_rabs received through x2_ho_req msg i++) { // assume that we are releasing all the DRBs ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_RELEASED; } memset(&create_tunnel_req, 0 , sizeof(create_tunnel_req)); uint8_t nb_e_rabs_tobeswitched = S1AP_PATH_SWITCH_REQ_ACK (msg_p).nb_e_rabs_tobeswitched; // keep the previous bearer // the index for the rec for (i = 0; i < nb_e_rabs_tobeswitched; // go over total number of e_rabs received through x2_ho_req msg i++) { /* Harmonize with enb_gtp_teid, enb_gtp_addrs, and enb_gtp_rbi vars in the top level structure */ ue_context_p->ue_context.e_rab[i].status = E_RAB_STATUS_REESTABLISHED; ue_context_p->ue_context.e_rab[i].param.e_rab_id = S1AP_PATH_SWITCH_REQ_ACK (msg_p).e_rabs_tobeswitched[i].e_rab_id; ue_context_p->ue_context.e_rab[i].param.sgw_addr= S1AP_PATH_SWITCH_REQ_ACK (msg_p).e_rabs_tobeswitched[i].sgw_addr; ue_context_p->ue_context.e_rab[i].param.gtp_teid = S1AP_PATH_SWITCH_REQ_ACK (msg_p).e_rabs_tobeswitched[i].gtp_teid; /* Tunnel must have been already created in X2_HO_REQ procedure */ } ue_context_p->ue_context.setup_e_rabs=i; ue_context_p->ue_context.nb_of_e_rabs=i; } ue_context_p->ue_context.ue_ambr=S1AP_PATH_SWITCH_REQ_ACK (msg_p).ue_ambr; ue_context_p->ue_context.nb_e_rabs_tobereleased = S1AP_PATH_SWITCH_REQ_ACK (msg_p).nb_e_rabs_tobereleased; memset(&delete_tunnel_req, 0 , sizeof(delete_tunnel_req)); for (i = 0; i < ue_context_p->ue_context.nb_e_rabs_tobereleased; i++) { ue_context_p->ue_context.e_rabs_tobereleased[i]=S1AP_PATH_SWITCH_REQ_ACK (msg_p).e_rabs_tobereleased[i].e_rab_id; delete_tunnel_req.eps_bearer_id[i] = S1AP_PATH_SWITCH_REQ_ACK (msg_p).e_rabs_tobereleased[i].e_rab_id; } if (ue_context_p->ue_context.nb_e_rabs_tobereleased>0){ delete_tunnel_req.rnti= ue_context_p->ue_context.rnti; delete_tunnel_req.num_erab= ue_context_p->ue_context.nb_e_rabs_tobereleased; /* this could also be done through ITTI message */ gtpv1u_delete_s1u_tunnel(instance, &delete_tunnel_req); /* TBD: release the DRB not admitted */ //rrc_eNB_generate_dedicatedRRCConnectionReconfiguration(&ctxt, ue_context_p, 0); } /* Security key */ ue_context_p->ue_context.next_hop_chain_count=S1AP_PATH_SWITCH_REQ_ACK (msg_p).next_hop_chain_count; memcpy ( ue_context_p->ue_context.next_security_key, S1AP_PATH_SWITCH_REQ_ACK (msg_p).next_security_key, SECURITY_KEY_LENGTH); return (0); } } # endif /* defined(ENABLE_ITTI) */ #endif /* defined(ENABLE_USE_MME) */