/******************************************************************************
*
*   Copyright (c) 2019 Intel.
*
*   Licensed under the Apache License, Version 2.0 (the "License");
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the License at
*
*       http://www.apache.org/licenses/LICENSE-2.0
*
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*
*******************************************************************************/

/**
 * @brief This file provides the API functions to build Control Plane Messages
 *      for XRAN Front Haul layer as defined in XRAN-FH.CUS.0-v02.01.
 *
 * @file xran_cp_api.c
 * @ingroup group_lte_source_xran
 * @author Intel Corporation
 *
 **/

#include <rte_branch_prediction.h>

#include "xran_common.h"
#include "xran_transport.h"
#include "xran_cp_api.h"
#include "xran_printf.h"


/**
 * This structure to store the section information of C-Plane
 * in order to generate and parse corresponding U-Plane */
struct xran_sectioninfo_db {
    uint32_t    cur_index;  /**< Current index to store fro this eAXC */
    struct xran_section_info list[XRAN_MAX_NUM_SECTIONS]; /**< The array of section information */
    };

static struct xran_sectioninfo_db sectiondb[XRAN_MAX_SECTIONDB_CTX][XRAN_DIR_MAX][XRAN_COMPONENT_CARRIERS_MAX][XRAN_MAX_ANTENNA_NR*2];


/**
 * @brief Initialize section database.
 *   Allocate required memory space to store section information.
 *   Each eAxC allocates dedicated storage and the entry size is the maximum number of sections.
 *   Total entry size : number of CC * number of antenna * max number of sections * 2(direction)
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_RESOURCE, if memory is not enough to allocate database area
 */
int xran_cp_init_sectiondb(void *pHandle)
{
  int ctx, dir, cc, ant;

    for(ctx=0; ctx < XRAN_MAX_SECTIONDB_CTX; ctx++)
        for(dir=0; dir < XRAN_DIR_MAX; dir++)
            for(cc=0; cc < XRAN_COMPONENT_CARRIERS_MAX; cc++)
                for(ant=0; ant < XRAN_MAX_ANTENNA_NR*2; ant++)
                    sectiondb[ctx][dir][cc][ant].cur_index = 0;

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief Release and free section database
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @return
 *  XRAN_STATUS_SUCCESS on success
 */
int xran_cp_free_sectiondb(void *pHandle)
{
    return (XRAN_STATUS_SUCCESS);
}

static inline struct xran_sectioninfo_db *xran_get_section_db(void *pHandle,
        uint8_t dir, uint8_t cc_id, uint8_t ruport_id, uint8_t ctx_id)
{
  struct xran_sectioninfo_db *ptr;


    if(unlikely(ctx_id >= XRAN_MAX_SECTIONDB_CTX)) {
        print_err("Invalid Context id - %d", ctx_id);
        return (NULL);
        }

    if(unlikely(dir >= XRAN_DIR_MAX)) {
        print_err("Invalid direction - %d", dir);
        return (NULL);
        }

    if(unlikely(cc_id >= XRAN_COMPONENT_CARRIERS_MAX)) {
        print_err("Invalid CC id - %d", cc_id);
        return (NULL);
        }

    if(unlikely(ruport_id >= XRAN_MAX_ANTENNA_NR*2)) {
        print_err("Invalid eAxC id - %d", ruport_id);
        return (NULL);
        }

    ptr = &sectiondb[ctx_id][dir][cc_id][ruport_id];

    return(ptr);
}

static inline struct xran_section_info *xran_get_section_info(struct xran_sectioninfo_db *ptr, uint16_t index)
{
    if(unlikely(ptr == NULL))
        return (NULL);

    if(unlikely(index > XRAN_MAX_NUM_SECTIONS)) {
        print_err("Index is out of range - %d", index);
        return (NULL);
        }

    return(&(ptr->list[index]));
}

/**
 * @brief Add a section information of C-Plane to dabase.
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @param dir
 *  Direction of C-Plane message for the section to store
 * @param cc_id
 *  CC ID of C-Plane message for the section to store
 * @param ruport_id
 *  RU port ID of C-Plane message for the section to store
 * @param ctx_id
 *  Context index for the section database
 * @param info
 *  The information of this section to store
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARAM, if direction, CC ID or RU port ID is incorrect
 *  XRAN_STATUS_RESOURCE, if no more space to add on database
 */
int xran_cp_add_section_info(void *pHandle,
        uint8_t dir, uint8_t cc_id, uint8_t ruport_id, uint8_t ctx_id,
        struct xran_section_info *info)
{
  struct xran_sectioninfo_db *ptr;
  struct xran_section_info *list;


    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL)) {
        return (XRAN_STATUS_INVALID_PARAM);
        }

    if(unlikely(ptr->cur_index >= XRAN_MAX_NUM_SECTIONS)) {
        print_err("No more space to add section information!");
        return (XRAN_STATUS_RESOURCE);
        }

    list = xran_get_section_info(ptr, ptr->cur_index);

    rte_memcpy(list, info, sizeof(struct xran_section_info));

    ptr->cur_index++;

    return (XRAN_STATUS_SUCCESS);
}

int xran_cp_add_multisection_info(void *pHandle,
        uint8_t cc_id, uint8_t ruport_id, uint8_t ctx_id,
        struct xran_cp_gen_params *gen_info)
{
  int i;
  uint8_t dir, num_sections;
  struct xran_sectioninfo_db *ptr;
  struct xran_section_info *list;


    dir             = gen_info->dir;
    num_sections    = gen_info->numSections;

    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL)) {
        return (XRAN_STATUS_INVALID_PARAM);
        }

    if(unlikely(ptr->cur_index+num_sections >= XRAN_MAX_NUM_SECTIONS)) {
        print_err("No more space to add section information!");
        return (XRAN_STATUS_RESOURCE);
        }

    list = xran_get_section_info(ptr, ptr->cur_index);

    for(i=0; i<num_sections; i++) {
        rte_memcpy(&list[i], &gen_info->sections[i].info, sizeof(struct xran_section_info));
        ptr->cur_index++;
        }

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief Find a section information of C-Plane from dabase
 *   by given information
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @param dir
 *  The direction of the section to find
 * @param cc_id
 *  The CC ID of the section to find
 * @param ruport_id
 *  RU port ID of the section to find
 * @param ctx_id
 *  Context index for the section database
 * @param section_id
 *  The ID of section to find
 * @return
 *  The pointer of section information if matched section is found
 *  NULL if failed to find matched section
 */
struct xran_section_info *xran_cp_find_section_info(void *pHandle,
        uint8_t dir, uint8_t cc_id, uint8_t ruport_id,
        uint8_t ctx_id, uint16_t section_id)
{
  int index, num_index;
  struct xran_sectioninfo_db *ptr;


    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL))
        return (NULL);

    if(ptr->cur_index > XRAN_MAX_NUM_SECTIONS)
        num_index = XRAN_MAX_NUM_SECTIONS;
    else
        num_index = ptr->cur_index;

    for(index=0; index < num_index; index++) {
        if(ptr->list[index].id == section_id) {
            return (xran_get_section_info(ptr, index));
            }
        }

    print_dbg("No section ID in the list - %d", section_id);
    return (NULL);
}

/**
 * @brief Iterate each section information of C-Plane
 *  from the database of eAxC by given information
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @param dir
 *  The direction of the section to find
 * @param cc_id
 *  The CC ID of the section to find
 * @param ruport_id
 *  RU port ID of the section to find
 * @param ctx_id
 *  Context index for the section database
 * @param next
 *  The pointer to store the position of next entry
 * @return
 *  The pointer of section information in the list
 *  NULL if reached at the end of the list
 */
struct xran_section_info *xran_cp_iterate_section_info(void *pHandle,
        uint8_t dir, uint8_t cc_id, uint8_t ruport_id,
        uint8_t ctx_id, uint32_t *next)
{
  int index;
  struct xran_sectioninfo_db *ptr;


    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL))
        return (NULL);

    index = *next;
    if(*next < ptr->cur_index) {
        (*next)++;
        return (xran_get_section_info(ptr, index));
        }
    else {
        print_dbg("No more sections in the list");
        return (NULL);
        }
}

/**
 * @brief Get the size of stored entries
 *  for the database of eAxC by given information
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @param dir
 *  The direction of the section to find
 * @param cc_id
 *  The CC ID of the section to find
 * @param ruport_id
 *  RU port ID of the section to find
 * @param ctx_id
 *  Context index for the section database
 * @return
 *  The size of stored entries
 *  -1 if failed to find matched database
 */
int xran_cp_getsize_section_info(void *pHandle, uint8_t dir, uint8_t cc_id, uint8_t ruport_id, uint8_t ctx_id)
{
  int i, index;
  struct xran_sectioninfo_db *ptr;


    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL))
        return (-1);

    return (ptr->cur_index);
}

/**
 * @brief Reset a database of eAxC by given information
 *
 * @ingroup xran_cp_pkt
 *
 * @param pHandle
 *  handle for xRAN interface, currently not being used
 * @param dir
 *  The direction of the section to find
 * @param cc_id
 *  The CC ID of the section to find
 * @param ruport_id
 *  RU port ID of the section to find
 * @param ctx_id
 *  Context index for the section database
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if failed to find matched database
 */
int xran_cp_reset_section_info(void *pHandle, uint8_t dir, uint8_t cc_id, uint8_t ruport_id, uint8_t ctx_id)
{
  struct xran_sectioninfo_db *ptr;

    ptr = xran_get_section_db(pHandle, dir, cc_id, ruport_id, ctx_id);
    if(unlikely(ptr == NULL)) {
        return (XRAN_STATUS_INVALID_PARAM);
        }

    ptr->cur_index = 0;

    return (XRAN_STATUS_SUCCESS);
}


int xran_dump_sectiondb(void)
{
    // TODO:
    return (0);
}

// Cyclic Prefix Length 5.4.4.14
//   CP_length = cpLength * Ts,  Ts = 1/30.72MHz
//    i.e cpLength = CP_length / Ts ?
#define CPLEN_TS           (30720000)
inline uint16_t xran_get_cplength(int CP_length)
{
    return (CP_length);
}

// Frequency offset 5.4.5.11
//   frequency_offset = freqOffset * SCS * 0.5
//    i.e freqOffset = (frequency_offset *2 )/ SCS ?
inline int32_t xran_get_freqoffset(int32_t freqOffset, int32_t scs)
{
    return (freqOffset);
}


static int xran_prepare_sectionext_1(struct rte_mbuf *mbuf,
                struct xran_sectionext1_info *params, int last_flag)
{
  struct xran_cp_radioapp_section_ext1 *ext1;
  uint8_t *data;
  int parm_size, iq_size;
  int total_len;
  static const uint8_t zeropad[XRAN_SECTIONEXT_ALIGN] = { 0, 0, 0, 0 };


    total_len = 0;

    parm_size = sizeof(struct xran_cp_radioapp_section_ext1);
    ext1 = (struct xran_cp_radioapp_section_ext1 *)rte_pktmbuf_append(mbuf, parm_size);
    if(ext1 == NULL) {
        print_err("Fail to allocate the space for section extension 1");
        return (XRAN_STATUS_RESOURCE);
        }

    total_len += parm_size;

    ext1->extType       = XRAN_CP_SECTIONEXTCMD_1;
    ext1->ef            = last_flag;
    ext1->bfwCompMeth   = params->bfwCompMeth;
    ext1->bfwIqWidth    = XRAN_CONVERT_BFWIQWIDTH(params->bfwiqWidth);

    switch(params->bfwCompMeth) {
        case XRAN_BFWCOMPMETHOD_BLKFLOAT:
            parm_size = 1;
            data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
            if(data == NULL) {
                print_err("Fail to allocate the space for section extension 1");
                return (XRAN_STATUS_RESOURCE);
                }
            total_len += parm_size;
            *data = (params->bfwCompParam.exponent & 0x0f);
            break;

        case XRAN_BFWCOMPMETHOD_BLKSCALE:
            parm_size = 1;
            data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
            if(data == NULL) {
                print_err("Fail to allocate the space for section extension 1");
                return (XRAN_STATUS_RESOURCE);
                }
            total_len += parm_size;
            *data = params->bfwCompParam.blockScaler;
            break;

        case XRAN_BFWCOMPMETHOD_ULAW:
            parm_size = 1;
            data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
            if(data == NULL) {
                print_err("Fail to allocate the space for section extension 1");
                return (XRAN_STATUS_RESOURCE);
                }
            total_len += parm_size;
            *data = params->bfwCompParam.compBitWidthShift;
            break;

        case XRAN_BFWCOMPMETHOD_BEAMSPACE:
#if 0
            parm_size = ceil(params->bfwNumber/8)*8;
#else
            parm_size = params->bfwNumber>>3;
            if(params->bfwNumber%8) parm_size++;
            parm_size *= 8;
#endif
            data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
            if(data == NULL) {
                print_err("Fail to allocate the space for section extension 1");
                return (XRAN_STATUS_RESOURCE);
                }
            rte_memcpy(data, params->bfwCompParam.activeBeamspaceCoeffMask, parm_size);
            total_len += parm_size;
            break;

        case XRAN_BFWCOMPMETHOD_NONE:
        default:
            parm_size = 0;
        }

    iq_size = params->bfwNumber * params->bfwiqWidth * 2;
#if 0
    parm_size = ceil(iq_size/8);
#else
    parm_size = iq_size>>3;
    if(iq_size%8) parm_size++;
#endif

    data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
    if(data == NULL) {
        print_err("Fail to allocate the space for section extension 1");
        return (XRAN_STATUS_RESOURCE);
        }
    rte_memcpy(data, params->bfwIQ, parm_size);

    total_len += parm_size;
    parm_size = total_len % XRAN_SECTIONEXT_ALIGN;
    if(parm_size) {
        parm_size = XRAN_SECTIONEXT_ALIGN - parm_size;
        data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
        if(data == NULL) {
            print_err("Fail to allocate the space for section extension 1");
            return (XRAN_STATUS_RESOURCE);
            }
        rte_memcpy(data, zeropad, parm_size);
        total_len += parm_size;
        }

    ext1->extLen        = total_len / XRAN_SECTIONEXT_ALIGN;

    return (total_len);
}

static int xran_prepare_sectionext_2(struct rte_mbuf *mbuf,
                struct xran_sectionext2_info *params, int last_flag)
{
  struct xran_cp_radioapp_section_ext2 *ext2;
  uint8_t *data;
  int total_len;
  int parm_size;
  uint32_t val, shift_val;
  int val_size;


    total_len = 0;

    parm_size = sizeof(struct xran_cp_radioapp_section_ext2);
    ext2 = (struct xran_cp_radioapp_section_ext2 *)rte_pktmbuf_append(mbuf, parm_size);
    if(ext2 == NULL) {
        print_err("Fail to allocate the space for section extension 2");
        return (XRAN_STATUS_RESOURCE);
        }
    total_len += parm_size;

    ext2->extType           = XRAN_CP_SECTIONEXTCMD_2;
    ext2->ef                = last_flag;
    ext2->bfZe3ddWidth      = params->bfZe3ddWidth;
    ext2->bfAz3ddWidth      = params->bfAz3ddWidth;
    ext2->bfZePtWidth       = params->bfZePtWidth;
    ext2->bfAzPtWidth       = params->bfAzPtWidth;
    ext2->bfaCompResv0      = 0;
    ext2->bfaCompResv1      = 0;

    val = 0;
    shift_val = 0;
    if(params->bfAzPtWidth) {
        val += params->bfAzPt;
        shift_val += 8 - (params->bfAzPtWidth+1);
        }
    else
        shift_val += 8;

    if(params->bfZePtWidth) {
        val = val << (params->bfZePtWidth+1);
        val += params->bfZePt;
        shift_val += 8 - (params->bfZePtWidth+1);
        }
    else
        shift_val += 8;

    if(params->bfAz3ddWidth) {
        val = val << (params->bfAz3ddWidth+1);
        val += params->bfAz3dd;
        shift_val += 8 - (params->bfAz3ddWidth+1);
        }
    else
        shift_val += 8;

    if(params->bfZe3ddWidth) {
        val = val << (params->bfZe3ddWidth+1);
        val += params->bfZe3dd;
        shift_val += 8 - (params->bfZe3ddWidth+1);
        }
    else
        shift_val += 8;

    if(val) {
        val = val << shift_val;
        val = rte_cpu_to_be_32(val);
        }

    val_size = 4 - (shift_val/8);   /* ceil(total bit/8) */
    parm_size = val_size + 1;       /* additional 1 byte for bfxxSI */

    data = (uint8_t *)rte_pktmbuf_append(mbuf, parm_size);
    if(data == NULL) {
        print_err("Fail to allocate the space for section extension 2");
        return (XRAN_STATUS_RESOURCE);
        }
    total_len += parm_size;

    rte_memcpy(data, &val, val_size);
    data += val_size;
    *data = ((params->bfAzSI) << 3) + (params->bfZeSI);

    ext2->extLen            = total_len / XRAN_SECTIONEXT_ALIGN;
    *(uint32_t *)ext2 = rte_cpu_to_be_32(*(uint32_t *)ext2);

    return (total_len);
}

static int xran_prepare_sectionext_4(struct rte_mbuf *mbuf,
                struct xran_sectionext4_info *params, int last_flag)
{
  struct xran_cp_radioapp_section_ext4 *ext4;
  int parm_size;
  int total_len;
  int ret;


    total_len = 0;

    parm_size = sizeof(struct xran_cp_radioapp_section_ext4);
    ext4 = (struct xran_cp_radioapp_section_ext4 *)rte_pktmbuf_append(mbuf, parm_size);
    if(ext4 == NULL) {
        print_err("Fail to allocate the space for section extension 4");
        return(XRAN_STATUS_RESOURCE);
        }
    else {
        total_len += parm_size;

        ext4->extType       = XRAN_CP_SECTIONEXTCMD_4;
        ext4->ef            = last_flag;
        ext4->modCompScaler = params->modCompScaler;
        ext4->csf           = params->csf?1:0;
        ext4->extLen        = 1;

        *(uint32_t *)ext4 = rte_cpu_to_be_32(*(uint32_t*)ext4);
        }

    return (total_len);
}

static int xran_prepare_sectionext_5(struct rte_mbuf *mbuf,
                struct xran_sectionext5_info *params, int last_flag)
{
  struct xran_cp_radioapp_section_ext5_1 *ext5_1;
  struct xran_cp_radioapp_section_ext5_2 *ext5_2;
  int parm_size;
  int total_len;
  uint32_t *data;


    total_len = 0;

    if(params->num_sets == 1) {
        parm_size = sizeof(struct xran_cp_radioapp_section_ext5_1);
        ext5_1 = (struct xran_cp_radioapp_section_ext5_1 *)rte_pktmbuf_append(mbuf, parm_size);
        if(ext5_1 == NULL) {
            print_err("Fail to allocate the space for section extension 5-1");
            return (XRAN_STATUS_RESOURCE);
            }
        else {
            total_len += parm_size;

            ext5_1->extType         = XRAN_CP_SECTIONEXTCMD_5;
            ext5_1->ef              = last_flag;

            ext5_1->mcScaleOffset   = params->mc[0].mcScaleOffset;
            ext5_1->csf             = params->mc[0].csf;
            ext5_1->mcScaleReMask   = params->mc[0].mcScaleReMask;
            ext5_1->reserved        = 0;

            ext5_1->extLen          = 2;

            *(uint64_t *)ext5_1 = rte_cpu_to_be_64(*(uint64_t *)ext5_1);
            }
        }
    else if(params->num_sets == 2) {
        parm_size = sizeof(struct xran_cp_radioapp_section_ext5_2);
        ext5_2 = (struct xran_cp_radioapp_section_ext5_2 *)rte_pktmbuf_append(mbuf, parm_size);
        if(ext5_2 == NULL) {
            print_err("Fail to allocate the space for section extension 5-2");
            return (XRAN_STATUS_RESOURCE);
            }
        else {
            total_len += parm_size;

            ext5_2->extType         = XRAN_CP_SECTIONEXTCMD_5;
            ext5_2->ef              = last_flag;

            ext5_2->mcScaleOffset1  = params->mc[0].mcScaleOffset;
            ext5_2->csf1            = params->mc[0].csf;
            ext5_2->mcScaleReMask1  = params->mc[0].mcScaleReMask;
            ext5_2->mcScaleOffset2  = params->mc[1].mcScaleOffset;
            ext5_2->csf2            = params->mc[1].csf;
            ext5_2->mcScaleReMask2  = params->mc[1].mcScaleReMask;

            ext5_2->reserved0       = 0;
            ext5_2->reserved1       = 0;

            ext5_2->extLen          = 3;

            *(uint64_t *)ext5_2 = rte_cpu_to_be_64(*(uint64_t *)ext5_2);
            data = (uint32_t *)((uint8_t *)ext5_2 + 8);
            *data = rte_cpu_to_be_32(*data);
            }
        }
    else {
        print_err("Invalid number of scalar values - %d", params->num_sets);
        return (XRAN_STATUS_INVALID_PARAM);
        }

    return (total_len);
}

/**
 * @brief add section extension to C-Plane packet
 *
 * @param mbuf
 *  A pointer to the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM
 *  XRAN_STATUS_RESOURCE if failed to allocate the space to packet buffer
 */
int xran_append_section_extensions(struct rte_mbuf *mbuf, struct xran_section_gen_info *params)
{
  int i, ret;
  uint32_t totalen;
  int last_flag;
  int ext_size;


    if(unlikely(params->exDataSize >= XRAN_MAX_NUM_EXTENSIONS)) {
        print_err("Invalid total number of extensions - %d", params->exDataSize);
        return (XRAN_STATUS_INVALID_PARAM);
        }

    totalen = 0;


    ret = XRAN_STATUS_SUCCESS;

    for(i=0; i < params->exDataSize; i++) {
        if(params->exData[i].data == NULL) {
            print_err("Invalid parameter - extension data %d is NULL", i);
            ret = XRAN_STATUS_INVALID_PARAM;
            continue;
            }

//    params->exData[].len
        last_flag = ((params->exDataSize - i)==1)?0:1;
        switch(params->exData[i].type) {
            case XRAN_CP_SECTIONEXTCMD_1:
                ext_size = xran_prepare_sectionext_1(mbuf, params->exData[i].data, last_flag);
                break;
            case XRAN_CP_SECTIONEXTCMD_2:
                ext_size = xran_prepare_sectionext_2(mbuf, params->exData[i].data, last_flag);
                break;
            case XRAN_CP_SECTIONEXTCMD_4:
                ext_size = xran_prepare_sectionext_4(mbuf, params->exData[i].data, last_flag);
                break;
            case XRAN_CP_SECTIONEXTCMD_5:
                ext_size = xran_prepare_sectionext_5(mbuf, params->exData[i].data, last_flag);
                break;

            case XRAN_CP_SECTIONEXTCMD_0:
            case XRAN_CP_SECTIONEXTCMD_3:
            default:
                print_err("Extension Type %d is not supported!", params->exData[i].type);
                ret = XRAN_STATUS_INVALID_PARAM;
                ext_size = 0;
            }

        if(ext_size == XRAN_STATUS_RESOURCE) {
            break;
            }

        totalen += ext_size;
        }

    return (totalen);
}


/**
 * @brief Fill the section body of type 0 in C-Plane packet
 *
 * @param section
 *  A pointer to the section in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if the number of symbol is invalid
 */
static int xran_prepare_section0(
                struct xran_cp_radioapp_section0 *section,
                struct xran_section_gen_info *params)
{
#if (XRAN_STRICT_PARM_CHECK)
    if(unlikely(params->info.numSymbol > XRAN_SYMBOLNUMBER_MAX)) {
        print_err("Invalid number of Symbols - %d", params->info.numSymbol);
        return (XRAN_STATUS_INVALID_PARAM);
        }
#endif

    section->hdr.sectionId      = params->info.id;
    section->hdr.rb             = params->info.rb;
    section->hdr.symInc         = params->info.symInc;
    section->hdr.startPrbc      = params->info.startPrbc;
    section->hdr.numPrbc        = XRAN_CONVERT_NUMPRBC(params->info.numPrbc);

    section->hdr.u.s0.reMask    = params->info.reMask;
    section->hdr.u.s0.numSymbol = params->info.numSymbol;
    section->hdr.u.s0.reserved  = 0;

    // for network byte order
    *((uint64_t *)section) = rte_cpu_to_be_64(*((uint64_t *)section));

    return (XRAN_STATUS_SUCCESS);
}
/**
 * @brief Fill the section header of type 0 in C-Plane packet
 *
 * @param s0hdr
 *  A pointer to the section header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS always
 */
static int xran_prepare_section0_hdr(
                struct xran_cp_radioapp_section0_header *s0hdr,
                struct xran_cp_gen_params *params)

{
    s0hdr->timeOffset               = rte_cpu_to_be_16(params->hdr.timeOffset);
    s0hdr->frameStructure.fftSize   = params->hdr.fftSize;
    s0hdr->frameStructure.uScs      = params->hdr.scs;
    s0hdr->cpLength                 = rte_cpu_to_be_16(params->hdr.cpLength);
    s0hdr->reserved                 = 0;

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief Fill the section body of type 1 in C-Plane packet
 *  Extension is not supported.
 *
 * @param section
 *  A pointer to the section header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if the number of symbol is invalid
 */
static int xran_prepare_section1(
                struct xran_cp_radioapp_section1 *section,
                struct xran_section_gen_info *params)
{
#if (XRAN_STRICT_PARM_CHECK)
    if(unlikely(params->info.numSymbol > XRAN_SYMBOLNUMBER_MAX)) {
        print_err("Invalid number of Symbols - %d", params->info.numSymbol);
        return (XRAN_STATUS_INVALID_PARAM);
        }
#endif

    section->hdr.sectionId      = params->info.id;
    section->hdr.rb             = params->info.rb;
    section->hdr.symInc         = params->info.symInc;
    section->hdr.startPrbc      = params->info.startPrbc;
    section->hdr.numPrbc        = XRAN_CONVERT_NUMPRBC(params->info.numPrbc);

    section->hdr.u.s1.reMask    = params->info.reMask;
    section->hdr.u.s1.numSymbol = params->info.numSymbol;
    section->hdr.u.s1.beamId    = params->info.beamId;

    section->hdr.u.s1.ef        = params->info.ef;

    // for network byte order
    *((uint64_t *)section) = rte_cpu_to_be_64(*((uint64_t *)section));

    return (XRAN_STATUS_SUCCESS);
}
/**
 * @brief Fill the section header of type 1 in C-Plane packet
 *
 * @param s1hdr
 *  A pointer to the section header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS always
 */
static int xran_prepare_section1_hdr(
                struct xran_cp_radioapp_section1_header *s1hdr,
                struct xran_cp_gen_params *params)
{
    s1hdr->udComp.udIqWidth         = params->hdr.iqWidth;
    s1hdr->udComp.udCompMeth        = params->hdr.compMeth;
    s1hdr->reserved                 = 0;

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief Fill the section body of type 3 in C-Plane packet
 *  Extension is not supported.
 *
 * @param section
 *  A pointer to the section header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if the number of symbol is invalid
 */
static int xran_prepare_section3(
                struct xran_cp_radioapp_section3 *section,
                struct xran_section_gen_info *params)
{
#if (XRAN_STRICT_PARM_CHECK)
    if(unlikely(params->info.numSymbol > XRAN_SYMBOLNUMBER_MAX)) {
        print_err("Invalid number of Symbols - %d", params->info.numSymbol);
        return (XRAN_STATUS_INVALID_PARAM);
        }
#endif

    section->hdr.sectionId      = params->info.id;
    section->hdr.rb             = params->info.rb;
    section->hdr.symInc         = params->info.symInc;
    section->hdr.startPrbc      = params->info.startPrbc;
    section->hdr.numPrbc        = XRAN_CONVERT_NUMPRBC(params->info.numPrbc);

    section->hdr.u.s3.reMask    = params->info.reMask;
    section->hdr.u.s3.numSymbol = params->info.numSymbol;
    section->hdr.u.s3.beamId    = params->info.beamId;

    section->freqOffset         = rte_cpu_to_be_32(params->info.freqOffset)>>8;
    section->reserved           = 0;

    section->hdr.u.s3.ef        = params->info.ef;

    // for network byte order (header, 8 bytes)
    *((uint64_t *)section) = rte_cpu_to_be_64(*((uint64_t *)section));

    return (XRAN_STATUS_SUCCESS);
}
/**
 * @brief Fill the section header of type 3 in C-Plane packet
 *
 * @param s3hdr
 *  A pointer to the section header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS always
 */
static int xran_prepare_section3_hdr(
                struct xran_cp_radioapp_section3_header *s3hdr,
                struct xran_cp_gen_params *params)

{
    s3hdr->timeOffset               = rte_cpu_to_be_16(params->hdr.timeOffset);
    s3hdr->frameStructure.fftSize   = params->hdr.fftSize;
    s3hdr->frameStructure.uScs      = params->hdr.scs;
    s3hdr->cpLength                 = rte_cpu_to_be_16(params->hdr.cpLength);
    s3hdr->udComp.udIqWidth         = params->hdr.iqWidth;
    s3hdr->udComp.udCompMeth        = params->hdr.compMeth;

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief add sections to C-Plane packet
 *  Section type 1 and 3 are supported.
 *
 * @param mbuf
 *  A pointer to the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if section type is not 1 or 3, or handler is NULL
 *  XRAN_STATUS_RESOURCE if failed to allocate the space to packet buffer
 */
int xran_append_control_section(struct rte_mbuf *mbuf, struct xran_cp_gen_params *params)
{
  int i, ret, ext_flag;
  uint32_t totalen;
  void *section;
  int section_size;
  int (*xran_prepare_section_func)(void *section, void *params);


    totalen = 0;
    switch(params->sectionType) {
        case XRAN_CP_SECTIONTYPE_0: /* Unused RB or Symbols in DL or UL, not supportted */
            section_size                = sizeof(struct xran_cp_radioapp_section0);
            xran_prepare_section_func   = (int (*)(void *, void *))xran_prepare_section0;
            break;

        case XRAN_CP_SECTIONTYPE_1: /* Most DL/UL Radio Channels */
            section_size                = sizeof(struct xran_cp_radioapp_section1);
            xran_prepare_section_func   = (int (*)(void *, void *))xran_prepare_section1;
            break;

        case XRAN_CP_SECTIONTYPE_3: /* PRACH and Mixed-numerology Channels */
            section_size                = sizeof(struct xran_cp_radioapp_section3);
            xran_prepare_section_func   = (int (*)(void *, void *))xran_prepare_section3;
            break;

        case XRAN_CP_SECTIONTYPE_5: /* UE scheduling information, not supported */
        case XRAN_CP_SECTIONTYPE_6: /* Channel Information, not supported */
        case XRAN_CP_SECTIONTYPE_7: /* LAA, not supported */
        default:
            section_size                = 0;
            xran_prepare_section_func   = NULL;
            print_err("Section Type %d is not supported!", params->sectionType);
            return (XRAN_STATUS_INVALID_PARAM);
        }

    if(unlikely(xran_prepare_section_func == NULL)) {
       print_err("Section Type %d is not supported!", params->sectionType);
       return (XRAN_STATUS_INVALID_PARAM);
       }

    for(i=0; i<params->numSections; i++) {
        section = rte_pktmbuf_append(mbuf, section_size);
        if(section == NULL) {
            print_err("Fail to allocate the space for section[%d]!", i);
            return (XRAN_STATUS_RESOURCE);
            }

        ret = xran_prepare_section_func((void *)section,
                            (void *)&params->sections[i]);
        if(ret < 0)
            return (ret);
        totalen += section_size;

        if(params->sections[i].info.ef) {
            ret = xran_append_section_extensions(mbuf, &params->sections[i]);
            if(ret < 0)
                return (ret);
            totalen += ret;
            }
        }

    return (totalen);
}

/**
 * @brief fill the information of a radio application header in a C-Plane packet
 *
 * @param apphdr
 *  A pointer to the application header in the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PARM if direction, slot index or symbold index is invalid
 */
static inline int xran_prepare_radioapp_common_header(
                struct xran_cp_radioapp_common_header *apphdr,
                struct xran_cp_gen_params *params)
{

#if (XRAN_STRICT_PARM_CHECK)
    if(unlikely(params->dir != XRAN_DIR_DL && params->dir != XRAN_DIR_UL)) {
        print_err("Invalid direction!");
        return (XRAN_STATUS_INVALID_PARAM);
        }
    if(unlikely(params->hdr.slotId > XRAN_SLOTID_MAX)) {
        print_err("Invalid Slot ID!");
        return (XRAN_STATUS_INVALID_PARAM);
        }
    if(unlikely(params->hdr.startSymId > XRAN_SYMBOLNUMBER_MAX)) {
        print_err("Invalid Symbol ID!");
        return (XRAN_STATUS_INVALID_PARAM);
        }
#endif

    apphdr->dataDirection   = params->dir;
    apphdr->payloadVer      = XRAN_PAYLOAD_VER;
    apphdr->filterIndex     = params->hdr.filterIdx;
    apphdr->frameId         = params->hdr.frameId;
    apphdr->subframeId      = params->hdr.subframeId;
    apphdr->slotId          = params->hdr.slotId;
    apphdr->startSymbolId   = params->hdr.startSymId;
    apphdr->numOfSections   = params->numSections;
    apphdr->sectionType     = params->sectionType;

    /* radio app header has common parts of 4bytes for all section types */
    *((uint32_t *)apphdr) = rte_cpu_to_be_32(*((uint32_t *)apphdr));

    return (XRAN_STATUS_SUCCESS);
}

/**
 * @brief add a radio application header in a C-Plane packet
 *
 * @param mbuf
 *  A pointer to the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @return
 *  The length of added section (>0) on success
 *  XRAN_STATUS_INVALID_PARM if section type is invalid, or handler is NULL
 *  XRAN_STATUS_RESOURCE if failed to allocate the space to packet buffer
 */
int xran_append_radioapp_header(struct rte_mbuf *mbuf, struct xran_cp_gen_params *params)
{
  int ret;
  uint32_t totalen;
  struct xran_cp_radioapp_common_header *apphdr;
  int (*xran_prepare_radioapp_section_hdr_func)(void *hdr, void *params);


#if (XRAN_STRICT_PARM_CHECK)
    if(unlikely(params->sectionType >= XRAN_CP_SECTIONTYPE_MAX)) {
        print_err("Invalid Section Type - %d", params->sectionType);
        return (XRAN_STATUS_INVALID_PARAM);
        }
#endif

    switch(params->sectionType) {
        case XRAN_CP_SECTIONTYPE_0: /* Unused RB or Symbols in DL or UL, not supportted */
            xran_prepare_radioapp_section_hdr_func = (int (*)(void *, void*))xran_prepare_section0_hdr;
            totalen = sizeof(struct xran_cp_radioapp_section0_header);
            break;

        case XRAN_CP_SECTIONTYPE_1: /* Most DL/UL Radio Channels */
            xran_prepare_radioapp_section_hdr_func = (int (*)(void *, void*))xran_prepare_section1_hdr;
            totalen = sizeof(struct xran_cp_radioapp_section1_header);
            break;

        case XRAN_CP_SECTIONTYPE_3: /* PRACH and Mixed-numerology Channels */
            xran_prepare_radioapp_section_hdr_func = (int (*)(void *, void*))xran_prepare_section3_hdr;
            totalen = sizeof(struct xran_cp_radioapp_section3_header);
            break;

        case XRAN_CP_SECTIONTYPE_5: /* UE scheduling information, not supported */
        case XRAN_CP_SECTIONTYPE_6: /* Channel Information, not supported */
        case XRAN_CP_SECTIONTYPE_7: /* LAA, not supported */
        default:
            print_err("Section Type %d is not supported!", params->sectionType);
            xran_prepare_radioapp_section_hdr_func = NULL;
            totalen = 0;
            return (XRAN_STATUS_INVALID_PARAM);
        }

    apphdr = (struct xran_cp_radioapp_common_header *)rte_pktmbuf_append(mbuf, totalen);
    if(unlikely(apphdr == NULL)) {
        print_err("Fail to reserve the space for radio application header!");
        return (XRAN_STATUS_RESOURCE);
        }

    ret = xran_prepare_radioapp_common_header(apphdr, params);
    if(unlikely(ret < 0)) {
        return (ret);
        }

    if(likely(xran_prepare_radioapp_section_hdr_func)) {
        totalen += xran_prepare_radioapp_section_hdr_func(apphdr, params);
        }
    else {
        print_err("xran_prepare_radioapp_section_hdr_func is NULL!");
        return (XRAN_STATUS_INVALID_PARAM);
        }

    return (totalen);
}

/**
 * @brief Create a C-Plane packet
 *  Transport layer fragmentation is not supported.
 *
 * @ingroup xran_cp_pkt
 *
 * @param mbuf
 *  A pointer to the packet buffer
 * @param params
 *  A porinter to the information to generate a C-Plane packet
 * @param CC_ID
 *  Component Carrier ID for this C-Plane message
 * @param Ant_ID
 *  Antenna ID(RU Port ID) for this C-Plane message
 * @param seq_id
 *  Sequence ID for this C-Plane message
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_RESOURCE if failed to allocate the space to packet buffer
 *  XRAN_STATUS_INVALID_PARM if section type is invalid
 */
int xran_prepare_ctrl_pkt(struct rte_mbuf *mbuf,
                        struct xran_cp_gen_params *params,
                        uint8_t CC_ID, uint8_t Ant_ID,
                        uint8_t seq_id)
{
  int ret;
  uint32_t payloadlen;
  struct xran_ecpri_hdr *ecpri_hdr;


    payloadlen = xran_build_ecpri_hdr(mbuf, CC_ID, Ant_ID, seq_id, &ecpri_hdr);

    ret = xran_append_radioapp_header(mbuf, params);
    if(ret < 0) {
        return (ret);
        }
    payloadlen += ret;

    ret = xran_append_control_section(mbuf, params);
    if(ret < 0) {
        return (ret);
        }
    payloadlen += ret;

    /* set payload length */
    ecpri_hdr->cmnhdr.ecpri_payl_size = rte_cpu_to_be_16(payloadlen);

    return (XRAN_STATUS_SUCCESS);
}


///////////////////////////////////////
// for RU emulation
/**
 * @brief Parse a C-Plane packet (for RU emulation)
 *  Transport layer fragmentation is not supported.
 *
 * @ingroup xran_cp_pkt
 *
 * @param mbuf
 *  The pointer of the packet buffer to be parsed
 * @param params
 *  The pointer of structure to store the information of parsed packet
 * @param eaxc
 *  The pointer of sturcture to store the decomposed information of ecpriRtcid/ecpriPcid
 * @return
 *  XRAN_STATUS_SUCCESS on success
 *  XRAN_STATUS_INVALID_PACKET if failed to parse the packet
 */
int xran_parse_cp_pkt(struct rte_mbuf *mbuf,
                    struct xran_cp_gen_params *result,
                    struct xran_recv_packet_info *pkt_info)
{
  struct xran_ecpri_hdr *ecpri_hdr;
  struct xran_cp_radioapp_common_header *apphdr;
  int i, ret;
  int extlen;


    ret = xran_parse_ecpri_hdr(mbuf, &ecpri_hdr, pkt_info);
    if(ret < 0 && ecpri_hdr == NULL)
        return (XRAN_STATUS_INVALID_PACKET);

    /* Process radio header. */
    apphdr = (void *)rte_pktmbuf_adj(mbuf, sizeof(struct xran_ecpri_hdr));
    if(apphdr == NULL) {
        print_err("Invalid packet - radio app hedaer!");
        return (XRAN_STATUS_INVALID_PACKET);
        }

    *((uint32_t *)apphdr) = rte_cpu_to_be_32(*((uint32_t *)apphdr));

    if(apphdr->payloadVer != XRAN_PAYLOAD_VER) {
        print_err("Invalid Payload version - %d", apphdr->payloadVer);
        ret = XRAN_STATUS_INVALID_PACKET;
        }

    result->dir             = apphdr->dataDirection;
    result->hdr.filterIdx   = apphdr->filterIndex;
    result->hdr.frameId     = apphdr->frameId;
    result->hdr.subframeId  = apphdr->subframeId;
    result->hdr.slotId      = apphdr->slotId;
    result->hdr.startSymId  = apphdr->startSymbolId;
    result->sectionType     = apphdr->sectionType;
    result->numSections     = apphdr->numOfSections;

#if 0
    printf("[CP%5d] eAxC[%d:%d:%02d:%02d] %s seq[%03d-%03d-%d] sec[%d-%d] frame[%3d-%2d-%2d] sym%02d\n",
        pkt_info->payload_len,
        pkt_info->eaxc.cuPortId, pkt_info->eaxc.bandSectorId,
        pkt_info->eaxc.ccId, pkt_info->eaxc.ruPortId,
        result->dir?"DL":"UL",
        pkt_info->seq_id, pkt_info->subseq_id, pkt_info->ebit,
        result->sectionType, result->numSections,
        result->hdr.frameId, result->hdr.subframeId, result->hdr.slotId,
        result->hdr.startSymId
        );
#endif

    switch(apphdr->sectionType) {
        case XRAN_CP_SECTIONTYPE_0: // Unused RB or Symbols in DL or UL, not supportted
            {
            struct xran_cp_radioapp_section0_header *hdr;
            struct xran_cp_radioapp_section0 *section;

                hdr = (struct xran_cp_radioapp_section0_header*)apphdr;

                result->hdr.fftSize     = rte_be_to_cpu_16(hdr->timeOffset);
                result->hdr.scs         = hdr->frameStructure.fftSize;
                result->hdr.timeOffset  = hdr->frameStructure.uScs;
                result->hdr.cpLength    = rte_be_to_cpu_16(hdr->cpLength);
                //hdr->reserved;    /* should be zero */

                section = (void *)rte_pktmbuf_adj(mbuf, sizeof(struct xran_cp_radioapp_section0_header));
                if(section == NULL) {
                    print_err("Invalid packet 0 - radio app hedaer!");
                    return (XRAN_STATUS_INVALID_PACKET);
                    }
                for(i=0; i<result->numSections; i++) {
                    *((uint64_t *)section) = rte_be_to_cpu_64(*((uint64_t *)section));

                    result->sections[i].info.type       = apphdr->sectionType;
                    result->sections[i].info.id         = section->hdr.sectionId;
                    result->sections[i].info.rb         = section->hdr.rb;
                    result->sections[i].info.symInc     = section->hdr.symInc;
                    result->sections[i].info.startPrbc  = section->hdr.startPrbc;
                    result->sections[i].info.numPrbc    = section->hdr.numPrbc,
                    result->sections[i].info.numSymbol  = section->hdr.u.s0.numSymbol;
                    result->sections[i].info.reMask     = section->hdr.u.s0.reMask;
                    //section->hdr.u.s0.reserved;   /* should be zero */

                    section = (void *)rte_pktmbuf_adj(mbuf, sizeof(struct xran_cp_radioapp_section0));
                    if(section == NULL) {
                        print_err("Invalid packet 0 - number of section [%d:%d]!",
                                    result->numSections, i);
                        result->numSections = i;
                        ret = XRAN_STATUS_INVALID_PACKET;
                        break;
                        }
                    }
            }
            break;

        case XRAN_CP_SECTIONTYPE_1: // Most DL/UL Radio Channels
            {
            struct xran_cp_radioapp_section1_header *hdr;
            struct xran_cp_radioapp_section1 *section;

                hdr = (struct xran_cp_radioapp_section1_header*)apphdr;

                result->hdr.iqWidth     = hdr->udComp.udIqWidth;
                result->hdr.compMeth    = hdr->udComp.udCompMeth;

                section = (void *)rte_pktmbuf_adj(mbuf, sizeof(struct xran_cp_radioapp_section1_header));
                if(section == NULL) {
                    print_err("Invalid packet 1 - radio app hedaer!");
                    return (XRAN_STATUS_INVALID_PACKET);
                    }

                for(i=0; i<result->numSections; i++) {
                    *((uint64_t *)section) = rte_be_to_cpu_64(*((uint64_t *)section));

                    result->sections[i].info.type       = apphdr->sectionType;
                    result->sections[i].info.id         = section->hdr.sectionId;
                    result->sections[i].info.rb         = section->hdr.rb;
                    result->sections[i].info.symInc     = section->hdr.symInc;
                    result->sections[i].info.startPrbc  = section->hdr.startPrbc;
                    result->sections[i].info.numPrbc    = section->hdr.numPrbc,
                    result->sections[i].info.numSymbol  = section->hdr.u.s1.numSymbol;
                    result->sections[i].info.reMask     = section->hdr.u.s1.reMask;
                    result->sections[i].info.beamId     = section->hdr.u.s1.beamId;
                    result->sections[i].info.ef         = section->hdr.u.s1.ef;

                    if(section->hdr.u.s1.ef) {
                        // TODO: handle section extension
                        extlen = 0;
                        }
                    else extlen = 0;

                    section = (void *)rte_pktmbuf_adj(mbuf,
                                    sizeof(struct xran_cp_radioapp_section1)+extlen);
                    if(section == NULL) {
                        print_err("Invalid packet 1 - number of section [%d:%d]!",
                                    result->numSections, i);
                        result->numSections = i;
                        ret = XRAN_STATUS_INVALID_PACKET;
                        break;
                        }
                    }
            }
            break;

        case XRAN_CP_SECTIONTYPE_3: // PRACH and Mixed-numerology Channels
            {
            struct xran_cp_radioapp_section3_header *hdr;
            struct xran_cp_radioapp_section3 *section;

                hdr = (struct xran_cp_radioapp_section3_header*)apphdr;

                result->hdr.timeOffset  = rte_be_to_cpu_16(hdr->timeOffset);
                result->hdr.scs         = hdr->frameStructure.uScs;
                result->hdr.fftSize     = hdr->frameStructure.fftSize;
                result->hdr.cpLength    = rte_be_to_cpu_16(hdr->cpLength);
                result->hdr.iqWidth     = hdr->udComp.udIqWidth;
                result->hdr.compMeth    = hdr->udComp.udCompMeth;

                section = (void *)rte_pktmbuf_adj(mbuf, sizeof(struct xran_cp_radioapp_section3_header));
                if(section == NULL) {
                    print_err("Invalid packet 3 - radio app hedaer!");
                    return (XRAN_STATUS_INVALID_PACKET);
                    }

                for(i=0; i<result->numSections; i++) {
                    *((uint64_t *)section) = rte_be_to_cpu_64(*((uint64_t *)section));

                    result->sections[i].info.type       = apphdr->sectionType;
                    result->sections[i].info.id         = section->hdr.sectionId;
                    result->sections[i].info.rb         = section->hdr.rb;
                    result->sections[i].info.symInc     = section->hdr.symInc;
                    result->sections[i].info.startPrbc  = section->hdr.startPrbc;
                    result->sections[i].info.numPrbc    = section->hdr.numPrbc,
                    result->sections[i].info.numSymbol  = section->hdr.u.s3.numSymbol;
                    result->sections[i].info.reMask     = section->hdr.u.s3.reMask;
                    result->sections[i].info.beamId     = section->hdr.u.s3.beamId;
                    result->sections[i].info.ef         = section->hdr.u.s3.ef;
                    result->sections[i].info.freqOffset = ((int32_t)rte_be_to_cpu_32(section->freqOffset))>>8;

                    if(section->reserved) {
                        print_err("Invalid packet 3 - section[%d:%d]", i, section->reserved);
                        ret = XRAN_STATUS_INVALID_PACKET;
                        }

                    if(section->hdr.u.s3.ef) {
                        // TODO: handle section extension
                        extlen = 0;
                        }
                    else extlen = 0;

                    section = (void *)rte_pktmbuf_adj(mbuf,
                                    sizeof(struct xran_cp_radioapp_section3)+extlen);
                    if(section == NULL) {
                        print_err("Invalid packet 3 - number of section [%d:%d]!",
                                    result->numSections, i);
                        result->numSections = i;
                        ret = XRAN_STATUS_INVALID_PACKET;
                        break;
                        }
                    }
            }
            break;

        case XRAN_CP_SECTIONTYPE_5: // UE scheduling information, not supported
        case XRAN_CP_SECTIONTYPE_6: // Channel Information, not supported
        case XRAN_CP_SECTIONTYPE_7: // LAA, not supported
        default:
            ret = XRAN_STATUS_INVALID_PARAM;
            print_err("Non-supported Section Type - %d", apphdr->sectionType);
        }

#if 0
    printf("[CP-%s] [%3d:%2d:%2d] section%d[%d] startSym=%d filterIdx=%X IQwidth=%d CompMeth=%d\n",
            result->dir?"DL":"UL",
            result->hdr.frameId, result->hdr.subframeId, result->hdr.slotId,
            result->sectionType, result->numSections,
            result->hdr.startSymId,
            result->hdr.filterIdx,
            result->hdr.iqWidth, result->hdr.compMeth);

    for(i=0; i<result->numSections; i++) {
        printf("  >> %3d:%04X| rb=%d symInc=%d numSym=%d startPrbc=%02d numPrbc=%d reMask=%03X beamId=%04X freqOffset=%d ef=%d\n",
            i, result->sections[i].info.id,
            result->sections[i].info.rb,
            result->sections[i].info.symInc, result->sections[i].info.numSymbol,
            result->sections[i].info.startPrbc, result->sections[i].info.numPrbc,
            result->sections[i].info.reMask,
            result->sections[i].info.beamId,
            result->sections[i].info.freqOffset,
            result->sections[i].info.ef);
//                    result->sections[i].info.type
        }
#endif

    return(ret);
}