98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_DEMUX_H
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#define SRSUE_DEMUX_H
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#include "srslte/common/log.h"
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#include "srslte/common/pdu.h"
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#include "srslte/common/pdu_queue.h"
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#include "srslte/common/timers.h"
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#include "srslte/interfaces/ue_interfaces.h"
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/* Logical Channel Demultiplexing and MAC CE dissassemble */
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namespace srsue {
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class mac_interface_demux
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{
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public:
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virtual void reset_harq(uint32_t cc_idx) = 0;
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virtual bool contention_resolution_id_rcv(uint64_t id) = 0;
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};
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class demux : public srslte::pdu_queue::process_callback
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{
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public:
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demux(srslte::log_ref log_h_);
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void init(phy_interface_mac_common* phy_h_,
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rlc_interface_mac* rlc,
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mac_interface_demux* mac,
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srslte::timer_handler::unique_timer* time_alignment_timer);
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bool process_pdus();
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uint8_t* request_buffer(uint32_t len);
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uint8_t* request_buffer_bcch(uint32_t len);
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void deallocate(uint8_t* payload_buffer_ptr);
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void push_pdu(uint8_t* buff, uint32_t nof_bytes);
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void push_pdu_bcch(uint8_t* buff, uint32_t nof_bytes);
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void push_pdu_mch(uint8_t* buff, uint32_t nof_bytes);
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void push_pdu_temp_crnti(uint8_t* buff, uint32_t nof_bytes);
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bool get_uecrid_successful();
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void process_pdu(uint8_t* pdu, uint32_t nof_bytes, srslte::pdu_queue::channel_t channel);
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void mch_start_rx(uint32_t lcid);
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private:
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const static int MAX_PDU_LEN = 150 * 1024 / 8; // ~ 150 Mbps
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const static int MAX_BCCH_PDU_LEN = 1024;
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uint8_t bcch_buffer[MAX_BCCH_PDU_LEN]; // BCCH PID has a dedicated buffer
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// args
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srslte::log_ref log_h;
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phy_interface_mac_common* phy_h = nullptr;
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rlc_interface_mac* rlc = nullptr;
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mac_interface_demux* mac = nullptr;
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srslte::sch_pdu mac_msg;
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srslte::mch_pdu mch_mac_msg;
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srslte::sch_pdu pending_mac_msg;
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uint8_t mch_lcids[SRSLTE_N_MCH_LCIDS];
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void process_sch_pdu_rt(uint8_t* buff, uint32_t nof_bytes);
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void process_sch_pdu(srslte::sch_pdu* pdu);
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void process_mch_pdu(srslte::mch_pdu* pdu);
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bool process_ce(srslte::sch_subh* subheader);
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void parse_ta_cmd(srslte::sch_subh* subh);
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bool is_uecrid_successful;
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srslte::timer_handler::unique_timer* time_alignment_timer = nullptr;
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// Buffer of PDUs
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srslte::pdu_queue pdus;
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};
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} // namespace srsue
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#endif // SRSUE_DEMUX_H
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