mirror of https://github.com/PentHertz/srsLTE.git
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
|
/**
|
||
|
|
*
|
||
|
|
* \section COPYRIGHT
|
||
|
|
*
|
||
|
|
* Copyright 2013-2015 Software Radio Systems Limited
|
||
|
|
*
|
||
|
|
* \section LICENSE
|
||
|
|
*
|
||
|
|
* This file is part of the srsUE library.
|
||
|
|
*
|
||
|
|
* srsUE is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU Affero General Public License as
|
||
|
|
* published by the Free Software Foundation, either version 3 of
|
||
|
|
* the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* srsUE is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU Affero General Public License for more details.
|
||
|
|
*
|
||
|
|
* A copy of the GNU Affero General Public License can be found in
|
||
|
|
* the LICENSE file in the top-level directory of this distribution
|
||
|
|
* and at http://www.gnu.org/licenses/.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PDCP_ENTITY_H
|
||
|
|
#define PDCP_ENTITY_H
|
||
|
|
|
||
|
|
#include "common/buffer_pool.h"
|
||
|
|
#include "common/log.h"
|
||
|
|
#include "common/common.h"
|
||
|
|
#include "common/interfaces.h"
|
||
|
|
#include "common/security.h"
|
||
|
|
|
||
|
|
using srslte::byte_buffer_t;
|
||
|
|
|
||
|
|
|
||
|
|
namespace srsue {
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Structs and Defines
|
||
|
|
* Ref: 3GPP TS 36.323 v10.1.0
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
#define PDCP_CONTROL_MAC_I 0x00000000
|
||
|
|
|
||
|
|
#define PDCP_PDU_TYPE_PDCP_STATUS_REPORT 0x0
|
||
|
|
#define PDCP_PDU_TYPE_INTERSPERSED_ROHC_FEEDBACK_PACKET 0x1
|
||
|
|
|
||
|
|
typedef enum{
|
||
|
|
PDCP_D_C_CONTROL_PDU = 0,
|
||
|
|
PDCP_D_C_DATA_PDU,
|
||
|
|
PDCP_D_C_N_ITEMS,
|
||
|
|
}pdcp_d_c_t;
|
||
|
|
static const char pdcp_d_c_text[PDCP_D_C_N_ITEMS][20] = {"Control PDU",
|
||
|
|
"Data PDU"};
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* PDCP Entity interface
|
||
|
|
* Common interface for all PDCP entities
|
||
|
|
***************************************************************************/
|
||
|
|
class pdcp_entity
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
pdcp_entity();
|
||
|
|
void init(rlc_interface_pdcp *rlc_,
|
||
|
|
rrc_interface_pdcp *rrc_,
|
||
|
|
gw_interface_pdcp *gw_,
|
||
|
|
srslte::log *log_,
|
||
|
|
uint32_t lcid_,
|
||
|
|
uint8_t direction_,
|
||
|
|
LIBLTE_RRC_PDCP_CONFIG_STRUCT *cnfg = NULL
|
||
|
|
);
|
||
|
|
void reset();
|
||
|
|
|
||
|
|
bool is_active();
|
||
|
|
|
||
|
|
// RRC interface
|
||
|
|
void write_sdu(byte_buffer_t *sdu);
|
||
|
|
void config_security(uint8_t *k_rrc_enc_,
|
||
|
|
uint8_t *k_rrc_int_,
|
||
|
|
CIPHERING_ALGORITHM_ID_ENUM cipher_algo_,
|
||
|
|
INTEGRITY_ALGORITHM_ID_ENUM integ_algo_);
|
||
|
|
|
||
|
|
// RLC interface
|
||
|
|
void write_pdu(byte_buffer_t *pdu);
|
||
|
|
|
||
|
|
private:
|
||
|
|
srslte::byte_buffer_pool *pool;
|
||
|
|
srslte::log *log;
|
||
|
|
rlc_interface_pdcp *rlc;
|
||
|
|
rrc_interface_pdcp *rrc;
|
||
|
|
gw_interface_pdcp *gw;
|
||
|
|
|
||
|
|
bool active;
|
||
|
|
uint32_t lcid;
|
||
|
|
bool do_security;
|
||
|
|
u_int8_t direction;
|
||
|
|
|
||
|
|
uint8_t sn_len;
|
||
|
|
// TODO: Support the following configurations
|
||
|
|
// bool do_rohc;
|
||
|
|
|
||
|
|
uint32_t rx_count;
|
||
|
|
uint32_t tx_count;
|
||
|
|
uint8_t k_rrc_enc[32];
|
||
|
|
uint8_t k_rrc_int[32];
|
||
|
|
|
||
|
|
CIPHERING_ALGORITHM_ID_ENUM cipher_algo;
|
||
|
|
INTEGRITY_ALGORITHM_ID_ENUM integ_algo;
|
||
|
|
|
||
|
|
void integrity_generate(uint8_t *key_128,
|
||
|
|
uint32_t count,
|
||
|
|
uint8_t rb_id,
|
||
|
|
uint8_t direction,
|
||
|
|
uint8_t *msg,
|
||
|
|
uint32_t msg_len,
|
||
|
|
uint8_t *mac);
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Pack/Unpack helper functions
|
||
|
|
* Ref: 3GPP TS 36.323 v10.1.0
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
void pdcp_pack_control_pdu(uint32_t sn, byte_buffer_t *sdu);
|
||
|
|
void pdcp_unpack_control_pdu(byte_buffer_t *sdu, uint32_t *sn);
|
||
|
|
|
||
|
|
void pdcp_pack_data_pdu_short_sn(uint32_t sn, byte_buffer_t *sdu);
|
||
|
|
void pdcp_unpack_data_pdu_short_sn(byte_buffer_t *sdu, uint32_t *sn);
|
||
|
|
void pdcp_pack_data_pdu_long_sn(uint32_t sn, byte_buffer_t *sdu);
|
||
|
|
void pdcp_unpack_data_pdu_long_sn(byte_buffer_t *sdu, uint32_t *sn);
|
||
|
|
|
||
|
|
} // namespace srsue
|
||
|
|
|
||
|
|
|
||
|
|
#endif // PDCP_ENTITY_H
|