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118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE 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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* srsUE 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 MUX_H
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#define MUX_H
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#include <pthread.h>
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#include <vector>
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#include "srslte/common/log.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/common/pdu.h"
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#include "mac/proc_bsr.h"
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#include "mac/proc_phr.h"
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/* Logical Channel Multiplexing and Prioritization + Msg3 Buffer */
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typedef struct {
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uint32_t id;
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int Bj;
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int PBR; // -1 sets to infinity
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uint32_t BSD;
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uint32_t priority;
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int sched_len;
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int buffer_len;
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} lchid_t;
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namespace srsue {
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class mux
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{
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public:
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mux(uint8_t nof_harq_proc_);
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void reset();
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void init(rlc_interface_mac *rlc, srslte::log *log_h, bsr_interface_mux *bsr_procedure, phr_proc *phr_procedure_);
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bool is_pending_any_sdu();
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bool is_pending_sdu(uint32_t lcid);
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uint8_t* pdu_get(uint8_t *payload, uint32_t pdu_sz, uint32_t tx_tti, uint32_t pid);
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uint8_t* msg3_get(uint8_t* payload, uint32_t pdu_sz);
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void msg3_flush();
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bool msg3_is_transmitted();
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void msg3_prepare();
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bool msg3_is_pending();
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void append_crnti_ce_next_tx(uint16_t crnti);
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void set_priority(uint32_t lcid, uint32_t priority, int PBR_x_tti, uint32_t BSD);
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void clear_lch(uint32_t lch_id);
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void pusch_retx(uint32_t tx_tti, uint32_t pid);
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private:
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int find_lchid(uint32_t lch_id);
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bool pdu_move_to_msg3(uint32_t pdu_sz);
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bool allocate_sdu(uint32_t lcid, srslte::sch_pdu *pdu, int max_sdu_sz);
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bool sched_sdu(lchid_t *ch, int *sdu_space, int max_sdu_sz);
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const static int MIN_RLC_SDU_LEN = 0;
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const static int MAX_NOF_SUBHEADERS = 20;
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std::vector<lchid_t> lch;
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// Keep track of the PIDs that transmitted BSR reports
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std::vector<bool> pid_has_bsr;
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// Mutex for exclusive access
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pthread_mutex_t mutex;
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srslte::log *log_h;
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rlc_interface_mac *rlc;
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bsr_interface_mux *bsr_procedure;
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phr_proc *phr_procedure;
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uint16_t pending_crnti_ce;
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uint8_t nof_harq_proc;
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/* Msg3 Buffer */
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static const uint32_t MSG3_BUFF_SZ = 1024;
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uint8_t msg3_buff[MSG3_BUFF_SZ];
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/* PDU Buffer */
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srslte::sch_pdu pdu_msg;
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bool msg3_has_been_transmitted;
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bool msg3_pending;
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};
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} // namespace srsue
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#endif // MUX_H
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