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@ -225,6 +225,9 @@ s1ap::handle_initiating_message(LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT *msg, stru
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case LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_UPLINKNASTRANSPORT:
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case LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_UPLINKNASTRANSPORT:
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m_s1ap_log->info("Received Uplink NAS Transport Message.\n");
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m_s1ap_log->info("Received Uplink NAS Transport Message.\n");
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return handle_uplink_nas_transport(&msg->choice.UplinkNASTransport, enb_sri);
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return handle_uplink_nas_transport(&msg->choice.UplinkNASTransport, enb_sri);
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case LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_UECONTEXTRELEASEREQUEST:
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m_s1ap_log->info("Received UE Context Release Request Message.\n");
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return handle_ue_context_release_request(&msg->choice.UEContextReleaseRequest, enb_sri);
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default:
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default:
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m_s1ap_log->error("Unhandled intiating message: %s\n", liblte_s1ap_initiatingmessage_choice_text[msg->choice_type]);
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m_s1ap_log->error("Unhandled intiating message: %s\n", liblte_s1ap_initiatingmessage_choice_text[msg->choice_type]);
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}
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}
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@ -482,12 +485,6 @@ s1ap::handle_nas_authentication_response(srslte::byte_buffer_t *nas_msg, srslte:
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bool
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bool
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s1ap::handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx)
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s1ap::handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx)
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{
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{
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/*
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typedef struct{
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LIBLTE_MME_MOBILE_ID_STRUCT imeisv;
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bool imeisv_present;
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}LIBLTE_MME_SECURITY_MODE_COMPLETE_MSG_STRUCT;
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*/
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LIBLTE_MME_SECURITY_MODE_COMPLETE_MSG_STRUCT sm_comp;
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LIBLTE_MME_SECURITY_MODE_COMPLETE_MSG_STRUCT sm_comp;
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//Get NAS authentication response
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//Get NAS authentication response
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@ -511,6 +508,45 @@ s1ap::handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::
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return true;
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return true;
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}
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}
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bool
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s1ap::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASEREQUEST_STRUCT *ue_rel, struct sctp_sndrcvinfo *enb_sri)
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{
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uint32_t mme_ue_s1ap_id = ue_rel->MME_UE_S1AP_ID.MME_UE_S1AP_ID;
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m_s1ap_log->info("Received UE Context Release Request. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
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m_s1ap_log->console("Received UE Context Release Request. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
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std::map<uint32_t, ue_ctx_t*>::iterator ue_ctx = m_active_ues.find(mme_ue_s1ap_id);
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if(ue_ctx == m_active_ues.end() )
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{
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m_s1ap_log->info("UE not found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
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return false;
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}
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//Delete UE within eNB UE set
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std::map<int32_t,uint16_t>::iterator it = m_sctp_to_enb_id.find(enb_sri->sinfo_assoc_id);
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if(it == m_sctp_to_enb_id.end() )
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{
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m_s1ap_log->error("Could not find eNB for this request.\n");
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return false;
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}
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uint16_t enb_id = it->second;
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std::map<uint16_t,std::set<uint32_t> >::iterator ue_set = m_enb_id_to_ue_ids.find(enb_id);
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if(ue_set == m_enb_id_to_ue_ids.end())
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{
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m_s1ap_log->error("Could not find the eNB's UEs.\n");
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return false;
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}
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ue_set->second.erase(mme_ue_s1ap_id);
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//Delete UE context
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delete ue_ctx->second;
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m_active_ues.erase(ue_ctx);
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m_s1ap_log->info("Deleted UE Context.\n");
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return true;
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}
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void
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void
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s1ap::print_enb_ctx_info(const enb_ctx_t &enb_ctx)
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s1ap::print_enb_ctx_info(const enb_ctx_t &enb_ctx)
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{
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{
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