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79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
3 years ago
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 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 SRSRAN_GTPU_PDCP_ADAPTER_H
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#define SRSRAN_GTPU_PDCP_ADAPTER_H
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#include "srsran/common/bearer_manager.h"
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#include "srsran/interfaces/enb_gtpu_interfaces.h"
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#include "srsran/srslog/logger.h"
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namespace srsenb {
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class gtpu_pdcp_adapter final : public gtpu_interface_pdcp, public pdcp_interface_gtpu
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{
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public:
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gtpu_pdcp_adapter(srslog::basic_logger& logger_,
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pdcp_interface_gtpu* pdcp_lte,
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pdcp_interface_gtpu* pdcp_nr,
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gtpu* gtpu_,
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enb_bearer_manager& bearers_) :
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logger(logger_), pdcp_lte_obj(pdcp_lte), pdcp_nr_obj(pdcp_nr), gtpu_obj(gtpu_), bearers(&bearers_)
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{}
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/// Converts LCID to EPS-BearerID and sends corresponding PDU to GTPU
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void write_pdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t pdu) override
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{
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auto bearer = bearers->get_lcid_bearer(rnti, lcid);
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if (not bearer.is_valid()) {
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logger.error("Bearer rnti=0x%x, lcid=%d not found", rnti, lcid);
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return;
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}
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gtpu_obj->write_pdu(rnti, bearer.eps_bearer_id, std::move(pdu));
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}
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void write_sdu(uint16_t rnti, uint32_t eps_bearer_id, srsran::unique_byte_buffer_t sdu, int pdcp_sn = -1) override
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{
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auto bearer = bearers->get_radio_bearer(rnti, eps_bearer_id);
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// route SDU to PDCP entity
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if (bearer.rat == srsran::srsran_rat_t::lte) {
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pdcp_lte_obj->write_sdu(rnti, bearer.lcid, std::move(sdu), pdcp_sn);
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} else if (bearer.rat == srsran::srsran_rat_t::nr) {
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pdcp_nr_obj->write_sdu(rnti, bearer.lcid, std::move(sdu), pdcp_sn);
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} else {
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logger.warning("Can't deliver SDU for EPS bearer %d. Dropping it.", eps_bearer_id);
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}
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}
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std::map<uint32_t, srsran::unique_byte_buffer_t> get_buffered_pdus(uint16_t rnti, uint32_t eps_bearer_id) override
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{
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auto bearer = bearers->get_radio_bearer(rnti, eps_bearer_id);
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// route SDU to PDCP entity
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if (bearer.rat == srsran::srsran_rat_t::lte) {
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return pdcp_lte_obj->get_buffered_pdus(rnti, bearer.lcid);
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} else if (bearer.rat == srsran::srsran_rat_t::nr) {
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return pdcp_nr_obj->get_buffered_pdus(rnti, bearer.lcid);
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}
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logger.error("Bearer rnti=0x%x, eps-BearerID=%d not found", rnti, eps_bearer_id);
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return {};
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}
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private:
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srslog::basic_logger& logger;
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gtpu* gtpu_obj = nullptr;
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pdcp_interface_gtpu* pdcp_lte_obj = nullptr;
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pdcp_interface_gtpu* pdcp_nr_obj = nullptr;
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enb_bearer_manager* bearers = nullptr;
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};
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} // namespace srsenb
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#endif // SRSRAN_GTPU_PDCP_ADAPTER_H
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