mirror of https://github.com/pvnis/srsRAN_4G.git
Added S1AP E-RAB release command/response handling to srsENB.
Added the ability to srsEPC to send the E-RAB release command.master
Pedro Alvarez
4 years ago
committed by
Andre Puschmann
parent
783131a4e1
commit
7eebd71627
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSEPC_S1AP_ERAB_MNGMT_PROC_H
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#define SRSEPC_S1AP_ERAB_MNGMT_PROC_H
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#include "mme_gtpc.h"
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#include "s1ap_common.h"
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#include "srslte/asn1/s1ap.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/common.h"
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#include "srslte/common/log_filter.h"
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#include <netinet/sctp.h>
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namespace srsepc {
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class s1ap;
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class s1ap_erab_mngmt_proc
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{
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public:
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static s1ap_erab_mngmt_proc* m_instance;
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static s1ap_erab_mngmt_proc* get_instance(void);
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static void cleanup(void);
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void init(void);
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bool send_erab_release_command(uint32_t enb_ue_s1ap_id,
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uint32_t mme_ue_s1ap_id,
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std::vector<uint16_t> erabs_to_release,
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struct sctp_sndrcvinfo enb_sri);
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bool handle_erab_release_response(const asn1::s1ap::init_context_setup_resp_s& in_ctxt_resp);
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private:
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s1ap_erab_mngmt_proc();
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virtual ~s1ap_erab_mngmt_proc();
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s1ap* m_s1ap = nullptr;
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srslte::log_filter* m_s1ap_log = nullptr;
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s1ap_args_t m_s1ap_args;
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mme_gtpc* m_mme_gtpc = nullptr;
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srslte::byte_buffer_pool* m_pool = nullptr;
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};
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} // namespace srsepc
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#endif // SRSEPC_S1AP_CTX_MNGMT_PROC_H
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@ -0,0 +1,99 @@
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#include "srsepc/hdr/mme/s1ap_erab_mngmt_proc.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/buffer_pool.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 <endian.h>
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namespace srsepc {
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s1ap_erab_mngmt_proc* s1ap_erab_mngmt_proc::m_instance = NULL;
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pthread_mutex_t s1ap_erab_mngmt_proc_instance_mutex = PTHREAD_MUTEX_INITIALIZER;
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s1ap_erab_mngmt_proc::s1ap_erab_mngmt_proc()
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{
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return;
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}
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s1ap_erab_mngmt_proc::~s1ap_erab_mngmt_proc()
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{
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return;
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}
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s1ap_erab_mngmt_proc* s1ap_erab_mngmt_proc::get_instance()
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{
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pthread_mutex_lock(&s1ap_erab_mngmt_proc_instance_mutex);
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if (NULL == m_instance) {
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m_instance = new s1ap_erab_mngmt_proc();
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}
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pthread_mutex_unlock(&s1ap_erab_mngmt_proc_instance_mutex);
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return (m_instance);
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}
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void s1ap_erab_mngmt_proc::cleanup()
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{
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pthread_mutex_lock(&s1ap_erab_mngmt_proc_instance_mutex);
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if (NULL != m_instance) {
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delete m_instance;
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m_instance = NULL;
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}
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pthread_mutex_unlock(&s1ap_erab_mngmt_proc_instance_mutex);
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}
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void s1ap_erab_mngmt_proc::init()
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{
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m_s1ap = s1ap::get_instance();
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m_s1ap_log = m_s1ap->m_s1ap_log;
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m_s1ap_args = m_s1ap->m_s1ap_args;
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m_pool = srslte::byte_buffer_pool::get_instance();
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}
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bool s1ap_erab_mngmt_proc::send_erab_release_command(uint32_t enb_ue_s1ap_id,
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uint32_t mme_ue_s1ap_id,
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std::vector<uint16_t> erabs_to_release,
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struct sctp_sndrcvinfo enb_sri)
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{
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m_s1ap_log->info("Preparing to send E-RAB Release Command\n");
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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_ERAB_RELEASE);
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asn1::s1ap::erab_release_cmd_ies_container& erab_rel_cmd = tx_pdu.init_msg().value.erab_release_cmd().protocol_ies;
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// Add MME and eNB S1AP Ids
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erab_rel_cmd.mme_ue_s1ap_id.value = mme_ue_s1ap_id;
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erab_rel_cmd.enb_ue_s1ap_id.value = enb_ue_s1ap_id;
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// Number of E-RABs to be setup
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erab_rel_cmd.erab_to_be_released_list.value.resize(erabs_to_release.size());
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for (uint32_t i = 0; i < erab_rel_cmd.erab_to_be_released_list.value.size(); i++) {
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erab_rel_cmd.erab_to_be_released_list.value[i].load_info_obj(ASN1_S1AP_ID_ERAB_ITEM);
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erab_rel_cmd.erab_to_be_released_list.value[i].value.erab_item().erab_id = erabs_to_release[i];
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erab_rel_cmd.erab_to_be_released_list.value[i].value.erab_item().cause.set(asn1::s1ap::cause_c::types::misc);
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erab_rel_cmd.erab_to_be_released_list.value[i].value.erab_item().cause.misc() =
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asn1::s1ap::cause_misc_opts::unspecified;
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m_s1ap_log->info("Sending release comman to %d\n", erabs_to_release[i]);
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}
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if (!m_s1ap->s1ap_tx_pdu(tx_pdu, &enb_sri)) {
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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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}
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return true;
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}
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} // namespace srsepc
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