rte_pdcp_hdr.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(C) 2023 Marvell.
 */

#ifndef RTE_PDCP_HDR_H
#define RTE_PDCP_HDR_H

#include <rte_byteorder.h>

#define RTE_PDCP_CTRL_PDU_SIZE_MAX 9000u

#define RTE_PDCP_MAC_I_LEN 4

enum rte_pdcp_ctrl_pdu_type {
    RTE_PDCP_CTRL_PDU_TYPE_STATUS_REPORT = 0,
    RTE_PDCP_CTRL_PDU_TYPE_ROHC_FEEDBACK = 1,
    RTE_PDCP_CTRL_PDU_TYPE_EHC_FEEDBACK = 2,
    RTE_PDCP_CRTL_PDU_TYPE_UDC_FEEDBACK = 3,
};

enum rte_pdcp_pdu_type {
    RTE_PDCP_PDU_TYPE_CTRL = 0,
    RTE_PDCP_PDU_TYPE_DATA = 1,
};

__extension__
struct rte_pdcp_cp_data_pdu_sn_12_hdr {
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
    uint8_t sn_11_8 : 4;    
    uint8_t r : 4;      
#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
    uint8_t r : 4;      
    uint8_t sn_11_8 : 4;    
#endif
    uint8_t sn_7_0;     
} __rte_packed;

__extension__
struct rte_pdcp_up_data_pdu_sn_12_hdr {
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
    uint8_t sn_11_8 : 4;    
    uint8_t r : 3;      
    uint8_t d_c : 1;    
#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
    uint8_t d_c : 1;    
    uint8_t r : 3;      
    uint8_t sn_11_8 : 4;    
#endif
    uint8_t sn_7_0;     
} __rte_packed;

__extension__
struct rte_pdcp_up_data_pdu_sn_18_hdr {
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
    uint8_t sn_17_16 : 2;   
    uint8_t r : 5;      
    uint8_t d_c : 1;    
#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
    uint8_t d_c : 1;    
    uint8_t r : 5;      
    uint8_t sn_17_16 : 2;   
#endif
    uint8_t sn_15_8;    
    uint8_t sn_7_0;     
} __rte_packed;

__extension__
struct rte_pdcp_up_ctrl_pdu_hdr {
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
    uint8_t r : 4;      
    uint8_t pdu_type : 3;   
    uint8_t d_c : 1;    
#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
    uint8_t d_c : 1;    
    uint8_t pdu_type : 3;   
    uint8_t r : 4;      
#endif

    rte_be32_t fmc;
    uint8_t bitmap[];
} __rte_packed;

#endif /* RTE_PDCP_HDR_H */