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@ -22,8 +22,10 @@
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#include "srsepc/hdr/mme/s1ap_ctx_mngmt_proc.h"
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#include "srsepc/hdr/mme/s1ap_ctx_mngmt_proc.h"
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#include "srsepc/hdr/mme/s1ap.h"
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#include "srsepc/hdr/mme/s1ap.h"
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#include "srslte/common/bcd_helpers.h"
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#include "srslte/common/bcd_helpers.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/int_helpers.h"
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#include "srslte/common/int_helpers.h"
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#include "srslte/common/liblte_security.h"
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#include "srslte/common/liblte_security.h"
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#include <endian.h>
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namespace srsepc {
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namespace srsepc {
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@ -71,16 +73,6 @@ void s1ap_ctx_mngmt_proc::init()
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bool s1ap_ctx_mngmt_proc::send_initial_context_setup_request(nas* nas_ctx, uint16_t erab_to_setup)
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bool s1ap_ctx_mngmt_proc::send_initial_context_setup_request(nas* nas_ctx, uint16_t erab_to_setup)
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{
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{
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// Prepare reply PDU
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LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
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bzero(&pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
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pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
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LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT* init = &pdu.choice.initiatingMessage;
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init->procedureCode = LIBLTE_S1AP_PROC_ID_INITIALCONTEXTSETUP;
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init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_INITIALCONTEXTSETUPREQUEST;
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LIBLTE_S1AP_MESSAGE_INITIALCONTEXTSETUPREQUEST_STRUCT* in_ctxt_req = &init->choice.InitialContextSetupRequest;
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m_s1ap_log->info("Preparing to send Initial Context Setup request\n");
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m_s1ap_log->info("Preparing to send Initial Context Setup request\n");
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// Get UE Context/E-RAB Context to setup
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// Get UE Context/E-RAB Context to setup
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@ -89,79 +81,80 @@ bool s1ap_ctx_mngmt_proc::send_initial_context_setup_request(nas* nas_ctx, uint1
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esm_ctx_t* esm_ctx = &nas_ctx->m_esm_ctx[erab_to_setup];
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esm_ctx_t* esm_ctx = &nas_ctx->m_esm_ctx[erab_to_setup];
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sec_ctx_t* sec_ctx = &nas_ctx->m_sec_ctx;
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sec_ctx_t* sec_ctx = &nas_ctx->m_sec_ctx;
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// Prepare reply PDU
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s1ap_pdu_t tx_pdu;
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tx_pdu.set_init_msg().load_info_obj(ASN1_S1AP_ID_INIT_CONTEXT_SETUP);
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asn1::s1ap::init_context_setup_request_ies_container& in_ctx_req =
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tx_pdu.init_msg().value.init_context_setup_request().protocol_ies;
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// Add MME and eNB S1AP Ids
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// Add MME and eNB S1AP Ids
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in_ctxt_req->MME_UE_S1AP_ID.MME_UE_S1AP_ID = ecm_ctx->mme_ue_s1ap_id;
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in_ctx_req.mme_ue_s1ap_id.value = ecm_ctx->mme_ue_s1ap_id;
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in_ctxt_req->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = ecm_ctx->enb_ue_s1ap_id;
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in_ctx_req.enb_ue_s1ap_id.value = ecm_ctx->enb_ue_s1ap_id;
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// Set UE-AMBR
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// UE-AMBR
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in_ctxt_req->uEaggregateMaximumBitrate.uEaggregateMaximumBitRateDL.BitRate = 1000000000;
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in_ctx_req.ueaggregate_maximum_bitrate.value.ueaggregate_maximum_bit_rate_dl = 1000000000;
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in_ctxt_req->uEaggregateMaximumBitrate.uEaggregateMaximumBitRateUL.BitRate = 1000000000;
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in_ctx_req.ueaggregate_maximum_bitrate.value.ueaggregate_maximum_bit_rate_ul = 1000000000;
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// Number of E-RABs to be setup
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// Number of E-RABs to be setup
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in_ctxt_req->E_RABToBeSetupListCtxtSUReq.len = 1;
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in_ctx_req.erab_to_be_setup_list_ctxt_su_req.value.resize(1);
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in_ctx_req.erab_to_be_setup_list_ctxt_su_req.value[0].load_info_obj(ASN1_S1AP_ID_ERAB_TO_BE_SETUP_ITEM_CTXT_SU_REQ);
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// Setup eRAB context
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// Setup eRAB context
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LIBLTE_S1AP_E_RABTOBESETUPITEMCTXTSUREQ_STRUCT* erab_ctx_req = &in_ctxt_req->E_RABToBeSetupListCtxtSUReq.buffer[0];
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asn1::s1ap::erab_to_be_setup_item_ctxt_su_req_s& erab_ctx_req =
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erab_ctx_req->e_RAB_ID.E_RAB_ID = esm_ctx->erab_id;
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in_ctx_req.erab_to_be_setup_list_ctxt_su_req.value[0].value.erab_to_be_setup_item_ctxt_su_req();
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erab_ctx_req.erab_id = esm_ctx->erab_id;
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// Setup E-RAB QoS parameters
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// Setup E-RAB QoS parameters
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erab_ctx_req->e_RABlevelQoSParameters.qCI.QCI = esm_ctx->qci;
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erab_ctx_req.erab_level_qos_params.qci = esm_ctx->qci;
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erab_ctx_req->e_RABlevelQoSParameters.allocationRetentionPriority.priorityLevel.PriorityLevel = 15; // Lowest
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erab_ctx_req.erab_level_qos_params.alloc_retention_prio.prio_level = 15; // lowest
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erab_ctx_req->e_RABlevelQoSParameters.allocationRetentionPriority.pre_emptionCapability =
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erab_ctx_req.erab_level_qos_params.alloc_retention_prio.pre_emption_cap =
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LIBLTE_S1AP_PRE_EMPTIONCAPABILITY_SHALL_NOT_TRIGGER_PRE_EMPTION;
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asn1::s1ap::pre_emption_cap_opts::shall_not_trigger_pre_emption;
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erab_ctx_req->e_RABlevelQoSParameters.allocationRetentionPriority.pre_emptionVulnerability =
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erab_ctx_req.erab_level_qos_params.alloc_retention_prio.pre_emption_vulnerability =
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LIBLTE_S1AP_PRE_EMPTIONVULNERABILITY_PRE_EMPTABLE;
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asn1::s1ap::pre_emption_vulnerability_opts::not_pre_emptable;
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erab_ctx_req->e_RABlevelQoSParameters.gbrQosInformation_present = false;
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erab_ctx_req.erab_level_qos_params.gbr_qos_info_present = false;
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// Set E-RAB S-GW F-TEID
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// Set E-RAB S-GW F-TEID
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erab_ctx_req->transportLayerAddress.n_bits = 32; // IPv4
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erab_ctx_req.transport_layer_address.resize(32); // IPv4
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uint32_t sgw_s1u_ip = htonl(esm_ctx->sgw_s1u_fteid.ipv4);
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asn1::bitstring_utils::from_number(
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uint8_t* tmp_ptr = erab_ctx_req->transportLayerAddress.buffer;
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erab_ctx_req.transport_layer_address.data(), ntohl(esm_ctx->sgw_s1u_fteid.ipv4), 32);
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liblte_value_2_bits(sgw_s1u_ip, &tmp_ptr, 32);
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erab_ctx_req.gtp_teid.from_number(esm_ctx->sgw_s1u_fteid.teid);
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uint32_t sgw_s1u_teid = esm_ctx->sgw_s1u_fteid.teid;
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srslte::uint32_to_uint8(sgw_s1u_teid, erab_ctx_req->gTP_TEID.buffer);
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// Set UE security capabilities and k_enb
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// Set UE security capabilities and k_enb
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bzero(in_ctxt_req->UESecurityCapabilities.encryptionAlgorithms.buffer, sizeof(uint8_t) * 16);
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bzero(in_ctxt_req->UESecurityCapabilities.integrityProtectionAlgorithms.buffer, sizeof(uint8_t) * 16);
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for (int i = 0; i < 3; i++) {
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for (int i = 0; i < 3; i++) {
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if (sec_ctx->ue_network_cap.eea[i + 1] == true) {
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if (sec_ctx->ue_network_cap.eea[i + 1] == true) {
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in_ctxt_req->UESecurityCapabilities.encryptionAlgorithms.buffer[i] = 1; // EEA supported
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in_ctx_req.ue_security_cap.value.encryption_algorithms.set(16 - i, true); // EEA supported
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} else {
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} else {
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in_ctxt_req->UESecurityCapabilities.encryptionAlgorithms.buffer[i] = 0; // EEA not supported
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in_ctx_req.ue_security_cap.value.encryption_algorithms.set(16 - i, false); // EEA not supported
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}
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}
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if (sec_ctx->ue_network_cap.eia[i + 1] == true) {
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if (sec_ctx->ue_network_cap.eia[i + 1] == true) {
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in_ctxt_req->UESecurityCapabilities.integrityProtectionAlgorithms.buffer[i] = 1; // EEA supported
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in_ctx_req.ue_security_cap.value.integrity_protection_algorithms.set(16 - i, true); // EIA supported
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} else {
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} else {
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in_ctxt_req->UESecurityCapabilities.integrityProtectionAlgorithms.buffer[i] = 0; // EEA not supported
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in_ctx_req.ue_security_cap.value.integrity_protection_algorithms.set(16 - i, false); // EIA not supported
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}
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}
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}
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}
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// Get K eNB
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// Get K eNB
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liblte_unpack(sec_ctx->k_enb, 32, in_ctxt_req->SecurityKey.buffer);
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// memcpy(in_ctx_req.security_key.value.data(),sec_ctx->k_enb, 32);
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for (uint8_t i = 0; i < 32; ++i) {
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in_ctx_req.security_key.value.data()[31 - i] = sec_ctx->k_enb[i];
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}
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m_s1ap_log->info_hex(sec_ctx->k_enb, 32, "Initial Context Setup Request -- Key eNB (k_enb)\n");
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m_s1ap_log->info_hex(sec_ctx->k_enb, 32, "Initial Context Setup Request -- Key eNB (k_enb)\n");
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srslte::byte_buffer_t* nas_buffer = m_pool->allocate();
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srslte::unique_byte_buffer_t nas_buffer = allocate_unique_buffer(*m_pool);
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if (emm_ctx->state == EMM_STATE_DEREGISTERED) {
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if (emm_ctx->state == EMM_STATE_DEREGISTERED) {
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// Attach procedure initiated from an attach request
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// Attach procedure initiated from an attach request
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m_s1ap_log->console("Adding attach accept to Initial Context Setup Request\n");
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m_s1ap_log->console("Adding attach accept to Initial Context Setup Request\n");
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m_s1ap_log->info("Adding attach accept to Initial Context Setup Request\n");
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m_s1ap_log->info("Adding attach accept to Initial Context Setup Request\n");
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nas_ctx->pack_attach_accept(nas_buffer);
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nas_ctx->pack_attach_accept(nas_buffer.get());
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// Add nas message to context setup request
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// Add nas message to context setup request
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erab_ctx_req->nAS_PDU_present = true;
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erab_ctx_req.nas_pdu_present = true;
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memcpy(erab_ctx_req->nAS_PDU.buffer, nas_buffer->msg, nas_buffer->N_bytes);
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erab_ctx_req.nas_pdu.resize(nas_buffer->N_bytes);
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erab_ctx_req->nAS_PDU.n_octets = nas_buffer->N_bytes;
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memcpy(erab_ctx_req.nas_pdu.data(), nas_buffer->msg, nas_buffer->N_bytes);
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}
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}
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srslte::byte_buffer_t* reply_buffer = m_pool->allocate();
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if (!m_s1ap->s1ap_tx_pdu(tx_pdu, &ecm_ctx->enb_sri)) {
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LIBLTE_ERROR_ENUM err = liblte_s1ap_pack_s1ap_pdu(&pdu, (LIBLTE_BYTE_MSG_STRUCT*)reply_buffer);
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if (err != LIBLTE_SUCCESS) {
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m_s1ap_log->error("Could not pack Initial Context Setup Request Message\n");
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return false;
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}
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if (!m_s1ap->s1ap_tx_pdu(reply_buffer, &ecm_ctx->enb_sri)) {
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m_s1ap_log->error("Error sending Initial Context Setup Request.\n");
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m_s1ap_log->error("Error sending Initial Context Setup Request.\n");
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return false;
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return false;
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}
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}
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@ -170,28 +163,30 @@ bool s1ap_ctx_mngmt_proc::send_initial_context_setup_request(nas* nas_ctx, uint1
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esm_ctx->state = ERAB_CTX_REQUESTED;
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esm_ctx->state = ERAB_CTX_REQUESTED;
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struct in_addr addr;
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struct in_addr addr;
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addr.s_addr = htonl(sgw_s1u_ip);
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addr.s_addr = htonl(erab_ctx_req.transport_layer_address.to_number());
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m_s1ap_log->info("Sent Initial Context Setup Request. E-RAB id %d \n", erab_ctx_req->e_RAB_ID.E_RAB_ID);
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m_s1ap_log->console("Sent Initial Context Setup Request. E-RAB id %d \n", erab_ctx_req.erab_id);
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m_s1ap_log->info("Initial Context -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid, inet_ntoa(addr));
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m_s1ap_log->info(
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m_s1ap_log->console("Initial Context Setup Request -- eNB UE S1AP Id %d, MME UE S1AP Id %d\n",
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"Initial Context -- S1-U TEID 0x%" PRIx64 ". IP %s \n", erab_ctx_req.gtp_teid.to_number(), inet_ntoa(addr));
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in_ctxt_req->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID,
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m_s1ap_log->info("Initial Context Setup Request -- eNB UE S1AP Id %d, MME UE S1AP Id %" PRIu64 "\n",
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in_ctxt_req->MME_UE_S1AP_ID.MME_UE_S1AP_ID);
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in_ctx_req.enb_ue_s1ap_id.value.value,
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m_s1ap_log->console("Initial Context Setup Request -- E-RAB id %d\n", erab_ctx_req->e_RAB_ID.E_RAB_ID);
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in_ctx_req.mme_ue_s1ap_id.value.value);
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m_s1ap_log->console("Initial Context Setup Request -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid, inet_ntoa(addr));
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m_s1ap_log->info("Initial Context Setup Request -- E-RAB id %d\n", erab_ctx_req.erab_id);
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m_s1ap_log->console("Initial Context Setup Request -- S1-U TEID 0x%x. IP %s \n", sgw_s1u_teid, inet_ntoa(addr));
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m_s1ap_log->info("Initial Context Setup Request -- S1-U TEID 0x%" PRIu64 ". IP %s \n",
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m_s1ap_log->console("Initial Context Setup Request -- QCI %d \n", erab_ctx_req->e_RABlevelQoSParameters.qCI.QCI);
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erab_ctx_req.gtp_teid.to_number(),
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inet_ntoa(addr));
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m_pool->deallocate(reply_buffer);
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m_s1ap_log->info("Initial Context Setup Request -- S1-U TEID 0x%" PRIu64 ". IP %s \n",
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m_pool->deallocate(nas_buffer);
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erab_ctx_req.gtp_teid.to_number(),
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inet_ntoa(addr));
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m_s1ap_log->info("Initial Context Setup Request -- QCI %d\n", erab_ctx_req.erab_level_qos_params.qci);
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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 s1ap_ctx_mngmt_proc::handle_initial_context_setup_response(
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|
bool s1ap_ctx_mngmt_proc::handle_initial_context_setup_response(
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|
LIBLTE_S1AP_MESSAGE_INITIALCONTEXTSETUPRESPONSE_STRUCT* in_ctxt_resp)
|
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|
|
const asn1::s1ap::init_context_setup_resp_s& in_ctxt_resp)
|
|
|
|
{
|
|
|
|
{
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|
|
|
uint32_t mme_ue_s1ap_id = in_ctxt_resp->MME_UE_S1AP_ID.MME_UE_S1AP_ID;
|
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|
uint32_t mme_ue_s1ap_id = in_ctxt_resp.protocol_ies.mme_ue_s1ap_id.value.value;
|
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|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
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|
|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
|
|
|
if (nas_ctx == NULL) {
|
|
|
|
if (nas_ctx == nullptr) {
|
|
|
|
m_s1ap_log->error("Could not find UE's context in active UE's map\n");
|
|
|
|
m_s1ap_log->error("Could not find UE's context in active UE's map\n");
|
|
|
|
return false;
|
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|
return false;
|
|
|
|
}
|
|
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|
}
|
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|
@ -200,28 +195,38 @@ bool s1ap_ctx_mngmt_proc::handle_initial_context_setup_response(
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|
ecm_ctx_t* ecm_ctx = &nas_ctx->m_ecm_ctx;
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|
ecm_ctx_t* ecm_ctx = &nas_ctx->m_ecm_ctx;
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m_s1ap_log->console("Received Initial Context Setup Response\n");
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|
m_s1ap_log->console("Received Initial Context Setup Response\n");
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// Setup E-RABs
|
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|
|
// Setup E-RABs
|
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|
for (uint32_t i = 0; i < in_ctxt_resp->E_RABSetupListCtxtSURes.len; i++) {
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|
for (const asn1::s1ap::protocol_ie_single_container_s<asn1::s1ap::erab_setup_item_ctxt_su_res_ies_o>& ie_container :
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|
uint8_t erab_id = in_ctxt_resp->E_RABSetupListCtxtSURes.buffer[i].e_RAB_ID.E_RAB_ID;
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|
|
in_ctxt_resp.protocol_ies.erab_setup_list_ctxt_su_res.value) {
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|
// Get E-RAB setup context item and E-RAB Id
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|
|
const asn1::s1ap::erab_setup_item_ctxt_su_res_s& erab_setup_item_ctxt =
|
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|
|
|
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|
|
ie_container.value.erab_setup_item_ctxt_su_res();
|
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|
|
uint8_t erab_id = erab_setup_item_ctxt.erab_id;
|
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|
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|
|
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|
|
// Make sure we requested the context setup
|
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|
|
esm_ctx_t* esm_ctx = &nas_ctx->m_esm_ctx[erab_id];
|
|
|
|
esm_ctx_t* esm_ctx = &nas_ctx->m_esm_ctx[erab_id];
|
|
|
|
if (esm_ctx->state != ERAB_CTX_REQUESTED) {
|
|
|
|
if (esm_ctx->state != ERAB_CTX_REQUESTED) {
|
|
|
|
m_s1ap_log->error("E-RAB requested was not previously requested %d\n", erab_id);
|
|
|
|
m_s1ap_log->error("E-RAB requested was not previously requested %d\n", erab_id);
|
|
|
|
return false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Mark E-RAB with context setup
|
|
|
|
// Mark E-RAB with context setup
|
|
|
|
esm_ctx->state = ERAB_CTX_SETUP;
|
|
|
|
esm_ctx->state = ERAB_CTX_SETUP;
|
|
|
|
|
|
|
|
|
|
|
|
// Set the GTP information
|
|
|
|
// Set the GTP information
|
|
|
|
uint8_t* bit_ptr = in_ctxt_resp->E_RABSetupListCtxtSURes.buffer[i].transportLayerAddress.buffer;
|
|
|
|
esm_ctx->enb_fteid.teid = erab_setup_item_ctxt.gtp_teid.to_number();
|
|
|
|
esm_ctx->enb_fteid.ipv4 = htonl(liblte_bits_2_value(&bit_ptr, 32));
|
|
|
|
esm_ctx->enb_fteid.ipv4 = ntohl(erab_setup_item_ctxt.transport_layer_address.to_number());
|
|
|
|
memcpy(&esm_ctx->enb_fteid.teid, in_ctxt_resp->E_RABSetupListCtxtSURes.buffer[i].gTP_TEID.buffer, 4);
|
|
|
|
|
|
|
|
esm_ctx->enb_fteid.teid = ntohl(esm_ctx->enb_fteid.teid);
|
|
|
|
char enb_addr_str[INET_ADDRSTRLEN + 1] = {};
|
|
|
|
|
|
|
|
struct in_addr tmp_addr = {};
|
|
|
|
char enb_addr_str[INET_ADDRSTRLEN + 1];
|
|
|
|
tmp_addr.s_addr = esm_ctx->enb_fteid.ipv4;
|
|
|
|
const char* err = inet_ntop(AF_INET, &esm_ctx->enb_fteid.ipv4, enb_addr_str, sizeof(enb_addr_str));
|
|
|
|
const char* err = inet_ntop(AF_INET, &tmp_addr, enb_addr_str, INET_ADDRSTRLEN);
|
|
|
|
if (err == NULL) {
|
|
|
|
if (err == nullptr) {
|
|
|
|
m_s1ap_log->error("Error converting IP to string\n");
|
|
|
|
m_s1ap_log->error("Error converting IP to string\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
m_s1ap_log->info("E-RAB Context Setup. E-RAB id %d\n", esm_ctx->erab_id);
|
|
|
|
m_s1ap_log->info("E-RAB Context Setup. E-RAB id %d\n", esm_ctx->erab_id);
|
|
|
|
m_s1ap_log->info("E-RAB Context -- eNB TEID 0x%x, eNB Address %s\n", esm_ctx->enb_fteid.teid, enb_addr_str);
|
|
|
|
m_s1ap_log->info("E-RAB Context -- eNB TEID 0x%x, eNB Address %s\n", esm_ctx->enb_fteid.teid, enb_addr_str);
|
|
|
|
m_s1ap_log->console("E-RAB Context Setup. E-RAB id %d\n", esm_ctx->erab_id);
|
|
|
|
m_s1ap_log->console("E-RAB Context Setup. E-RAB id %d\n", esm_ctx->erab_id);
|
|
|
|
@ -237,19 +242,15 @@ bool s1ap_ctx_mngmt_proc::handle_initial_context_setup_response(
|
|
|
|
return true;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool s1ap_ctx_mngmt_proc::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASEREQUEST_STRUCT* ue_rel,
|
|
|
|
bool s1ap_ctx_mngmt_proc::handle_ue_context_release_request(const asn1::s1ap::ue_context_release_request_s& ue_rel,
|
|
|
|
struct sctp_sndrcvinfo* enb_sri,
|
|
|
|
struct sctp_sndrcvinfo* enb_sri)
|
|
|
|
srslte::byte_buffer_t* reply_buffer,
|
|
|
|
|
|
|
|
bool* reply_flag)
|
|
|
|
|
|
|
|
{
|
|
|
|
{
|
|
|
|
LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASEREQUEST_STRUCT ue_rel_req;
|
|
|
|
uint32_t mme_ue_s1ap_id = ue_rel.protocol_ies.mme_ue_s1ap_id.value.value;
|
|
|
|
|
|
|
|
|
|
|
|
uint32_t mme_ue_s1ap_id = ue_rel->MME_UE_S1AP_ID.MME_UE_S1AP_ID;
|
|
|
|
|
|
|
|
m_s1ap_log->info("Received UE Context Release Request. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->info("Received UE Context Release Request. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("Received UE Context Release Request. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("Received UE Context Release Request. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
|
|
|
|
|
|
|
|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
|
|
|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
|
|
|
if (nas_ctx == NULL) {
|
|
|
|
if (nas_ctx == nullptr) {
|
|
|
|
m_s1ap_log->info("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->info("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
return false;
|
|
|
|
return false;
|
|
|
|
@ -291,53 +292,36 @@ bool s1ap_ctx_mngmt_proc::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_
|
|
|
|
|
|
|
|
|
|
|
|
bool s1ap_ctx_mngmt_proc::send_ue_context_release_command(nas* nas_ctx)
|
|
|
|
bool s1ap_ctx_mngmt_proc::send_ue_context_release_command(nas* nas_ctx)
|
|
|
|
{
|
|
|
|
{
|
|
|
|
srslte::byte_buffer_t* reply_buffer = m_pool->allocate();
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Prepare reply PDU
|
|
|
|
// Prepare reply PDU
|
|
|
|
LIBLTE_S1AP_S1AP_PDU_STRUCT pdu;
|
|
|
|
s1ap_pdu_t tx_pdu;
|
|
|
|
bzero(&pdu, sizeof(LIBLTE_S1AP_S1AP_PDU_STRUCT));
|
|
|
|
tx_pdu.set_init_msg().load_info_obj(ASN1_S1AP_ID_UE_CONTEXT_RELEASE);
|
|
|
|
pdu.choice_type = LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE;
|
|
|
|
|
|
|
|
|
|
|
|
asn1::s1ap::ue_context_release_cmd_ies_container& ctx_rel_cmd =
|
|
|
|
LIBLTE_S1AP_INITIATINGMESSAGE_STRUCT* init = &pdu.choice.initiatingMessage;
|
|
|
|
tx_pdu.init_msg().value.ue_context_release_cmd().protocol_ies;
|
|
|
|
init->procedureCode = LIBLTE_S1AP_PROC_ID_UECONTEXTRELEASE;
|
|
|
|
ctx_rel_cmd.ue_s1ap_ids.value.set(asn1::s1ap::ue_s1ap_ids_c::types_opts::ue_s1ap_id_pair);
|
|
|
|
init->choice_type = LIBLTE_S1AP_INITIATINGMESSAGE_CHOICE_UECONTEXTRELEASECOMMAND;
|
|
|
|
ctx_rel_cmd.ue_s1ap_ids.value.ue_s1ap_id_pair().mme_ue_s1ap_id = nas_ctx->m_ecm_ctx.mme_ue_s1ap_id;
|
|
|
|
|
|
|
|
ctx_rel_cmd.ue_s1ap_ids.value.ue_s1ap_id_pair().enb_ue_s1ap_id = nas_ctx->m_ecm_ctx.enb_ue_s1ap_id;
|
|
|
|
LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASECOMMAND_STRUCT* ctx_rel_cmd = &init->choice.UEContextReleaseCommand;
|
|
|
|
|
|
|
|
ctx_rel_cmd->UE_S1AP_IDs.choice_type = LIBLTE_S1AP_UE_S1AP_IDS_CHOICE_UE_S1AP_ID_PAIR;
|
|
|
|
ctx_rel_cmd.cause.value.set(asn1::s1ap::cause_c::types_opts::nas);
|
|
|
|
ctx_rel_cmd->UE_S1AP_IDs.choice.uE_S1AP_ID_pair.mME_UE_S1AP_ID.MME_UE_S1AP_ID = nas_ctx->m_ecm_ctx.mme_ue_s1ap_id;
|
|
|
|
ctx_rel_cmd.cause.value.nas().value = asn1::s1ap::cause_nas_opts::options::normal_release;
|
|
|
|
ctx_rel_cmd->UE_S1AP_IDs.choice.uE_S1AP_ID_pair.eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = nas_ctx->m_ecm_ctx.enb_ue_s1ap_id;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ctx_rel_cmd->Cause.choice_type = LIBLTE_S1AP_CAUSE_CHOICE_NAS;
|
|
|
|
|
|
|
|
ctx_rel_cmd->Cause.choice.nas.ext = false;
|
|
|
|
|
|
|
|
ctx_rel_cmd->Cause.choice.nas.e = LIBLTE_S1AP_CAUSENAS_NORMAL_RELEASE;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LIBLTE_ERROR_ENUM err = liblte_s1ap_pack_s1ap_pdu(&pdu, (LIBLTE_BYTE_MSG_STRUCT*)reply_buffer);
|
|
|
|
|
|
|
|
if (err != LIBLTE_SUCCESS) {
|
|
|
|
|
|
|
|
m_s1ap_log->error("Could not pack Context Release Command Message\n");
|
|
|
|
|
|
|
|
m_pool->deallocate(reply_buffer);
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Send Reply to eNB
|
|
|
|
// Send Reply to eNB
|
|
|
|
if (!m_s1ap->s1ap_tx_pdu(reply_buffer, &nas_ctx->m_ecm_ctx.enb_sri)) {
|
|
|
|
if (!m_s1ap->s1ap_tx_pdu(tx_pdu, &nas_ctx->m_ecm_ctx.enb_sri)) {
|
|
|
|
m_s1ap_log->error("Error sending UE Context Release Command.\n");
|
|
|
|
m_s1ap_log->error("Error sending UE Context Release Command.\n");
|
|
|
|
m_pool->deallocate(reply_buffer);
|
|
|
|
|
|
|
|
return false;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
m_pool->deallocate(reply_buffer);
|
|
|
|
|
|
|
|
return true;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool s1ap_ctx_mngmt_proc::handle_ue_context_release_complete(
|
|
|
|
bool s1ap_ctx_mngmt_proc::handle_ue_context_release_complete(const asn1::s1ap::ue_context_release_complete_s& rel_comp)
|
|
|
|
LIBLTE_S1AP_MESSAGE_UECONTEXTRELEASECOMPLETE_STRUCT* rel_comp)
|
|
|
|
|
|
|
|
{
|
|
|
|
{
|
|
|
|
uint32_t mme_ue_s1ap_id = rel_comp->MME_UE_S1AP_ID.MME_UE_S1AP_ID;
|
|
|
|
uint32_t mme_ue_s1ap_id = rel_comp.protocol_ies.mme_ue_s1ap_id.value.value;
|
|
|
|
m_s1ap_log->info("Received UE Context Release Complete. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->info("Received UE Context Release Complete. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("Received UE Context Release Complete. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("Received UE Context Release Complete. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
|
|
|
|
|
|
|
|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
|
|
|
nas* nas_ctx = m_s1ap->find_nas_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
|
|
|
|
if (nas_ctx == NULL) {
|
|
|
|
if (nas_ctx == nullptr) {
|
|
|
|
m_s1ap_log->info("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->info("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("No UE context to release found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
|
|
|
|
return false;
|
|
|
|
return false;
|
|
|
|
@ -358,8 +342,8 @@ bool s1ap_ctx_mngmt_proc::handle_ue_context_release_complete(
|
|
|
|
m_s1ap_log->info("UE is not ECM connected. No need to release S1-U. MME UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->info("UE is not ECM connected. No need to release S1-U. MME UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("UE is not ECM connected. No need to release S1-U. MME UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
m_s1ap_log->console("UE is not ECM connected. No need to release S1-U. MME UE S1AP Id %d\n", mme_ue_s1ap_id);
|
|
|
|
// Make sure E-RABS are marked as DEACTIVATED.
|
|
|
|
// Make sure E-RABS are marked as DEACTIVATED.
|
|
|
|
for (int i = 0; i < MAX_ERABS_PER_UE; i++) {
|
|
|
|
for (esm_ctx_t& esm_ctx : nas_ctx->m_esm_ctx) {
|
|
|
|
nas_ctx->m_esm_ctx[i].state = ERAB_DEACTIVATED;
|
|
|
|
esm_ctx.state = ERAB_DEACTIVATED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
Pedro Alvarez
5 years ago
committed by
Francisco Paisana