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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_ENB_RLC_INTERFACES_H
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#define SRSRAN_ENB_RLC_INTERFACES_H
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#include "srsran/common/byte_buffer.h"
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#include "srsran/interfaces/rlc_interface_types.h"
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namespace srsenb {
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// RLC interface for MAC
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class rlc_interface_mac
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{
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public:
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/* MAC calls RLC to get RLC segment of nof_bytes length.
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* Segmentation happens in this function. RLC PDU is stored in payload. */
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virtual int read_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes) = 0;
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/* MAC calls RLC to push an RLC PDU. This function is called from an independent MAC thread.
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* PDU gets placed into the buffer and higher layer thread gets notified. */
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virtual void write_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes) = 0;
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};
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// RLC interface for PDCP
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class rlc_interface_pdcp
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{
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public:
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/* PDCP calls RLC to push an RLC SDU. SDU gets placed into the RLC buffer and MAC pulls
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* RLC PDUs according to TB size. */
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virtual void write_sdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t sdu) = 0;
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virtual void discard_sdu(uint16_t rnti, uint32_t lcid, uint32_t sn) = 0;
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virtual bool rb_is_um(uint16_t rnti, uint32_t lcid) = 0;
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virtual bool sdu_queue_is_full(uint16_t rnti, uint32_t lcid) = 0;
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virtual bool is_suspended(uint16_t rnti, uint32_t lcid) = 0;
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};
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// RLC interface for RRC
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class rlc_interface_rrc
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{
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public:
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virtual void clear_buffer(uint16_t rnti) = 0;
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virtual void add_user(uint16_t rnti) = 0;
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virtual void rem_user(uint16_t rnti) = 0;
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virtual void add_bearer(uint16_t rnti, uint32_t lcid, const srsran::rlc_config_t& cnfg) = 0;
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virtual void add_bearer_mrb(uint16_t rnti, uint32_t lcid) = 0;
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virtual void del_bearer(uint16_t rnti, uint32_t lcid) = 0;
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virtual void write_sdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t sdu) = 0;
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virtual bool has_bearer(uint16_t rnti, uint32_t lcid) = 0;
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virtual bool suspend_bearer(uint16_t rnti, uint32_t lcid) = 0;
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virtual bool is_suspended(uint16_t rnti, uint32_t lcid) = 0;
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virtual bool resume_bearer(uint16_t rnti, uint32_t lcid) = 0;
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virtual void reestablish(uint16_t rnti) = 0;
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};
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} // namespace srsenb
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#endif // SRSRAN_ENB_RLC_INTERFACES_H
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