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/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2011 Eurecom

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information
  Openair Admin: openair_admin@eurecom.fr
  Openair Tech : openair_tech@eurecom.fr
  Forums       : http://forums.eurecom.fsr/openairinterface
  Address      : Eurecom, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France

*******************************************************************************/

/*! \file pdcp.c
 * \brief pdcp interface with RLC
 * \author  Lionel GAUTHIER and Navid Nikaein
 * \date 2009-2012
 * \version 1.0
 */

#define PDCP_C
#ifndef USER_MODE
#include <rtai_fifos.h>
#endif
#include "pdcp.h"
#include "pdcp_util.h"
#include "pdcp_sequence_manager.h"
#include "LAYER2/RLC/rlc.h"
#include "LAYER2/MAC/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "pdcp_primitives.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "UTIL/LOG/log.h"
#include <inttypes.h>
#include "platform_constants.h"
#include "UTIL/LOG/vcd_signal_dumper.h"

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#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif

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#define PDCP_DATA_REQ_DEBUG 0
#define PDCP_DATA_IND_DEBUG 0

#ifndef OAI_EMU
extern int otg_enabled;
#endif

extern rlc_op_status_t rlc_data_req(module_id_t, u32_t, u8_t, u8_t,rb_id_t, mui_t, confirm_t, sdu_size_t, mem_block_t*);
extern void rrc_lite_data_ind( u8 Mod_id, u32 frame, u8 eNB_flag, u32 Rb_id, u32 sdu_size,u8 *Buffer);
//Added MW - RRC L2 interface
extern void pdcp_rrc_data_ind( u8 Mod_id, u32 frame, u8 eNB_flag, unsigned int Srb_id, unsigned int Sdu_size,u8 *Buffer);
//extern char *packet_gen(int src, int dst, int ctime, int *pkt_size);
extern int otg_rx_pkt( int src, int dst, int ctime, char *buffer_tx, unsigned int size);

//-----------------------------------------------------------------------------
/*
 * If PDCP_UNIT_TEST is set here then data flow between PDCP and RLC is broken
 * and PDCP has no longer anything to do with RLC. In this case, after it's handed
 * an SDU it appends PDCP header and returns (by filling in incoming pointer parameters)
 * this mem_block_t to be dissected for testing purposes. For further details see test
 * code at targets/TEST/PDCP/test_pdcp.c:test_pdcp_data_req()
 */
#ifdef PDCP_UNIT_TEST
BOOL pdcp_data_req(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
                   unsigned char* sdu_buffer, pdcp_t* test_pdcp_entity, list_t* test_list)
#else
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BOOL pdcp_data_req(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, u32 muiP, u32 confirmP, \
                   sdu_size_t sdu_buffer_size, unsigned char* sdu_buffer, u8 mode)
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#endif
{
  //-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
  pdcp_t* pdcp = test_pdcp_entity;
#else
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  pdcp_t* pdcp = &pdcp_array[module_id][rb_id];
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#endif
  u8 i;
  u8 pdcp_header_len=0, pdcp_tailer_len=0;
  u16 pdcp_pdu_size=0, current_sn;
  mem_block_t* pdcp_pdu = NULL;
  rlc_op_status_t rlc_status;

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 if ((pdcp->instanciated_instance == 0) && (mode != PDCP_TM)) {
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    LOG_W(PDCP, "Instance is not configured, Ignoring SDU...\n");
    return FALSE;
  }
  if (sdu_buffer_size == 0) {
    LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
    return FALSE;
  }
  /*
   * XXX MAX_IP_PACKET_SIZE is 4096, shouldn't this be MAX SDU size, which is 8188 bytes?
   */

  if (sdu_buffer_size > MAX_IP_PACKET_SIZE) {
    LOG_E(PDCP, "Requested SDU size (%d) is bigger than that can be handled by PDCP (%u)!\n",
          sdu_buffer_size, MAX_IP_PACKET_SIZE);
    // XXX What does following call do?
    mac_xface->macphy_exit("");
  }

  // PDCP transparent mode for MBMS traffic 

  if (mode == PDCP_TM) { 
    LOG_D(PDCP, " [TM] Asking for a new mem_block of size %d\n",sdu_buffer_size);
    pdcp_pdu = get_free_mem_block(sdu_buffer_size);
    if (pdcp_pdu != NULL) {
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      memcpy(&pdcp_pdu->data[0], sdu_buffer, sdu_buffer_size); 
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      rlc_status = rlc_data_req(module_id, frame, eNB_flag, RLC_MBMS_YES, rb_id, muiP, confirmP, sdu_buffer_size, pdcp_pdu);
    } else
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      rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
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  } else {
    // calculate the pdcp header and trailer size
    if ((rb_id % NB_RB_MAX) < DTCH) {
      pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
      pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
    } else {
      pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
      pdcp_tailer_len = 0;
    }
    pdcp_pdu_size= sdu_buffer_size + pdcp_header_len + pdcp_tailer_len;
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    LOG_I(PDCP, "Data request notification for PDCP entity with module ID %d and radio bearer ID %d pdu size %d (header%d, trailer%d)\n", module_id, rb_id,pdcp_pdu_size, pdcp_header_len,pdcp_tailer_len);
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    /*
     * Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
     */
    LOG_D(PDCP, "Asking for a new mem_block of size %d\n", pdcp_pdu_size);
    pdcp_pdu = get_free_mem_block(pdcp_pdu_size);
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    if (pdcp_pdu != NULL) {
      /*
       * Create a Data PDU with header and append data
       *
       * Place User Plane PDCP Data PDU header first
       */
      
      if ((rb_id % NB_RB_MAX) < DTCH) { // this Control plane PDCP Data PDU
        pdcp_control_plane_data_pdu_header pdu_header;
        pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp);
        current_sn = pdu_header.sn;
        memset(&pdu_header.mac_i[0],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
        if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu->data, &pdu_header) == FALSE) {
          LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
          return FALSE;
        }
      } else {
        pdcp_user_plane_data_pdu_header_with_long_sn pdu_header;
        pdu_header.dc = (mode == 1) ? PDCP_DATA_PDU :  PDCP_CONTROL_PDU;
        pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp);
        current_sn = pdu_header.sn ;
        if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu->data, &pdu_header) == FALSE) {
          LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
          return FALSE;
        }
      }
      /*
       * Validate incoming sequence number, there might be a problem with PDCP initialization
       */
      if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp->seq_num_size)) {
        LOG_E(PDCP, "Generated sequence number (%lu) is greater than a sequence number could ever be!\n", current_sn);
        LOG_E(PDCP, "There must be a problem with PDCP initialization, ignoring this PDU...\n");

        free_mem_block(pdcp_pdu);
        return FALSE;
      }
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      LOG_D(PDCP, "Sequence number %d is assigned to current PDU\n", current_sn);
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      /* Then append data... */
      memcpy(&pdcp_pdu->data[pdcp_header_len], sdu_buffer, sdu_buffer_size);
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      //For control plane data that are not integrity protected,
      // the MAC-I field is still present and should be padded with padding bits set to 0.
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      // NOTE: user-plane data are never integrity protected
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      for (i=0;i<pdcp_tailer_len;i++)
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          pdcp_pdu->data[pdcp_header_len + sdu_buffer_size + i] = 0x00;// pdu_header.mac_i[i];

#if defined(ENABLE_SECURITY)
      if ((pdcp->security_activated != 0) &&
          ((pdcp->cipheringAlgorithm) != 0) &&
          ((pdcp->integrityProtAlgorithm) != 0)) {
        pdcp_apply_security(pdcp, rb_id % NB_RB_MAX,
                            pdcp_header_len, current_sn, pdcp_pdu->data,
                            sdu_buffer_size);
      }
#endif

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      /* Print octets of outgoing data in hexadecimal form */
      LOG_D(PDCP, "Following content with size %d will be sent over RLC (PDCP PDU header is the first two bytes)\n",
            pdcp_pdu_size);
      util_print_hex_octets(PDCP, (unsigned char*)pdcp_pdu->data, pdcp_pdu_size);
      //util_flush_hex_octets(PDCP, (unsigned char*)pdcp_pdu->data, pdcp_pdu_size);
    } else {
      LOG_E(PDCP, "Cannot create a mem_block for a PDU!\n");
      return FALSE;
    }      
#ifdef PDCP_UNIT_TEST
    /*
     * Here we add PDU to the list and return to test code without
     * handing it off to RLC
     */
    list_add_tail_eurecom(pdcp_pdu, test_list);
    return TRUE;
#else
    /*
     * Ask sublayer to transmit data and check return value
     * to see if RLC succeeded
     */
    rlc_status = rlc_data_req(module_id, frame, eNB_flag, 0, rb_id, muiP, confirmP, pdcp_pdu_size, pdcp_pdu);
  }
  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
    break;

  case RLC_OP_STATUS_BAD_PARAMETER:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
    return FALSE;

  case RLC_OP_STATUS_INTERNAL_ERROR:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
    return FALSE;

  case RLC_OP_STATUS_OUT_OF_RESSOURCES:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
    return FALSE;

  default:
    LOG_W(PDCP, "RLC returned an unknown status code after PDCP placed the order to send some data (Status Code:%d)\n", rlc_status);
    return FALSE;
  }

  /*
   * Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
   * so we return TRUE afterwards
   */
  /*  
   if (rb_id>=DTCH) {
    if (eNB_flag == 1) {
      Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
      Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
    } else {
      Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
      Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
    }
    }*/
  return TRUE;
#endif // PDCP_UNIT_TEST

}

//-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
BOOL pdcp_data_ind(module_id_t module_id, u32_t frame, u8_t eNB_flag, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
                   mem_block_t* sdu_buffer, pdcp_t* pdcp_test_entity, list_t* test_list)
#else
    BOOL pdcp_data_ind(module_id_t module_id, u32_t frame, u8_t eNB_flag, u8_t MBMS_flagP, rb_id_t rb_id, sdu_size_t sdu_buffer_size, \
                       mem_block_t* sdu_buffer, u8 is_data_plane)
#endif
{
  //-----------------------------------------------------------------------------
#ifdef PDCP_UNIT_TEST
  pdcp_t* pdcp = pdcp_test_entity;
  list_t* sdu_list = test_list;
#else
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  pdcp_t* pdcp = &pdcp_array[module_id][rb_id];
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  list_t* sdu_list = &pdcp_sdu_list;
#endif
  mem_block_t *new_sdu = NULL;
  int src_id, dst_id,ctime; // otg param
  u8 pdcp_header_len=0, pdcp_tailer_len=0;
  u16 sequence_number;
  u8 payload_offset=0;

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  LOG_I(PDCP,"Data indication notification for PDCP entity with module "
  "ID %d and radio bearer ID %d rlc sdu size %d eNB_flag %d\n", module_id, rb_id, sdu_buffer_size, eNB_flag);
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  if (sdu_buffer_size == 0) {
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    LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
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    return FALSE;
  }

  /*
     * Check if incoming SDU is long enough to carry a PDU header
     */
  if (MBMS_flagP == 0 ) {
    if ((rb_id % NB_RB_MAX) < DTCH) {
      pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
      pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
    } else {
      pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
      pdcp_tailer_len = 0;
    }

    if (sdu_buffer_size < pdcp_header_len + pdcp_tailer_len ) {
      LOG_W(PDCP, "Incoming (from RLC) SDU is short of size (size:%d)! Ignoring...\n", sdu_buffer_size);
#ifndef PDCP_UNIT_TEST
      free_mem_block(sdu_buffer);
#endif
      return FALSE;
    }

    /*
       * Parse the PDU placed at the beginning of SDU to check
       * if incoming SN is in line with RX window
       */

    if (pdcp_header_len == PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE) { // DRB
      sequence_number =     pdcp_get_sequence_number_of_pdu_with_long_sn((unsigned char*)sdu_buffer->data);
//       u8 dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer->data);
    } else { //SRB1/2
      sequence_number =   pdcp_get_sequence_number_of_pdu_with_SRB_sn((unsigned char*)sdu_buffer->data);
    }
    if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp) == TRUE) {
      LOG_D(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window, yay!\n", sequence_number);
      /* if (dc == PDCP_DATA_PDU )
	   LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
	   else
	   LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
    } else {
      LOG_W(PDCP, "Incoming PDU has an unexpected sequence number (%d), RX window snychronisation have probably been lost!\n", sequence_number);
      /*
	 * XXX Till we implement in-sequence delivery and duplicate discarding
	 * mechanism all out-of-order packets will be delivered to RRC/IP
	 */
#if 0
      LOG_D(PDCP, "Ignoring PDU...\n");
      free_mem_block(sdu_buffer);
      return FALSE;
#else
      LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
#endif
    }
    // SRB1/2: control-plane data
    if ( (rb_id % NB_RB_MAX) <  DTCH ){
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#if defined(ENABLE_SECURITY)
      if (pdcp->security_activated == 1) {
        pdcp_validate_security(pdcp, rb_id % NB_RB_MAX, pdcp_header_len,
                               sequence_number, sdu_buffer->data,
                               sdu_buffer_size - pdcp_tailer_len);
      }
#endif
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      //rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
      pdcp_rrc_data_ind(module_id,
                        frame,
                        eNB_flag,
                        rb_id,
                        sdu_buffer_size - pdcp_header_len - pdcp_tailer_len,
                        (u8*)&sdu_buffer->data[pdcp_header_len]);
      free_mem_block(sdu_buffer);
      // free_mem_block(new_sdu);
      return TRUE;
    }
    payload_offset=PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
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#if defined(ENABLE_SECURITY)
    if (pdcp->security_activated == 1) {
        pdcp_validate_security(pdcp, rb_id % NB_RB_MAX, pdcp_header_len,
                               sequence_number, sdu_buffer->data,
                               sdu_buffer_size - pdcp_tailer_len);
    }
#endif
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  } else {
    payload_offset=0;
  }
#if defined(USER_MODE) && defined(OAI_EMU)
  if (oai_emulation.info.otg_enabled ==1 ){
    src_id = 0;
    dst_id = (eNB_flag == 1) ? module_id : module_id /*-  NB_eNB_INST*/;
    ctime = oai_emulation.info.time_ms; // avg current simulation time in ms : we may get the exact time through OCG?
    LOG_D(OTG,"Check received buffer : enb_flag %d mod id %d, rab id %d (src %d, dst %d)\n", eNB_flag, module_id, rb_id, src_id, dst_id);

    if (MBMS_flagP == 0) {
      src_id = (eNB_flag == 1) ? (rb_id - DTCH) / NB_RB_MAX  /*- NB_eNB_INST */ + 1 :  ((rb_id - DTCH) / NB_RB_MAX);
    }else {
#ifdef Rel10
      src_id = (rb_id - MTCH  - 3 - maxDRB) / maxSessionPerPMCH  /*- NB_eNB_INST */ ;
      //dst_id is now = module_id (supoosed to be 1 for UE), take the same as module from rlc_data_ind
      // dst_id generated data from OTG is is 1 (session_id)
#endif
    }

    if (otg_rx_pkt(src_id, dst_id,ctime,&sdu_buffer->data[payload_offset],
                   sdu_buffer_size - payload_offset ) == 0 ) {
      free_mem_block(sdu_buffer);
      return TRUE;
    }
  }
#else
  if (otg_enabled==1) {
    LOG_D(OTG,"Discarding received packed\n");
    free_mem_block(sdu_buffer);
    return TRUE;
  }
#endif
  new_sdu = get_free_mem_block(sdu_buffer_size - payload_offset + sizeof (pdcp_data_ind_header_t));

  if (new_sdu) {
    /*
       * Prepend PDCP indication header which is going to be removed at pdcp_fifo_flush_sdus()
       */
    memset(new_sdu->data, 0, sizeof (pdcp_data_ind_header_t));
    ((pdcp_data_ind_header_t *) new_sdu->data)->rb_id     = rb_id;
    ((pdcp_data_ind_header_t *) new_sdu->data)->data_size = sdu_buffer_size - payload_offset;

    // Here there is no virtualization possible
#ifdef IDROMEL_NEMO
    if (eNB_flag == 0)
      ((pdcp_data_ind_header_t *) new_sdu->data)->inst = rb_id/8;
    else
      ((pdcp_data_ind_header_t *) new_sdu->data)->inst = 0;
#else
    ((pdcp_data_ind_header_t *) new_sdu->data)->inst = module_id;
#endif
    
    // XXX Decompression would be done at this point

    /*
       * After checking incoming sequence number PDCP header
       * has to be stripped off so here we copy SDU buffer starting
       * from its second byte (skipping 0th and 1st octets, i.e.
       * PDCP header)
       */
    memcpy(&new_sdu->data[sizeof (pdcp_data_ind_header_t)], \
           &sdu_buffer->data[payload_offset], \
           sdu_buffer_size - payload_offset);
    list_add_tail_eurecom (new_sdu, sdu_list);

    /* Print octets of incoming data in hexadecimal form */
    LOG_D(PDCP, "Following content has been received from RLC (%d,%d)(PDCP header has already been removed):\n", sdu_buffer_size  - payload_offset + sizeof(pdcp_data_ind_header_t),
          sdu_buffer_size  - payload_offset);
    //util_print_hex_octets(PDCP, (unsigned char*)new_sdu->data, sdu_buffer_size  - PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE + sizeof(pdcp_data_ind_header_t));
    util_flush_hex_octets(PDCP, (unsigned char*)new_sdu->data, sdu_buffer_size  - payload_offset  + sizeof(pdcp_data_ind_header_t));

    /*
       * Update PDCP statistics
       * XXX Following two actions are identical, is there a merge error?
       */
    if (eNB_flag == 1) {
      Pdcp_stats_rx[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH]++;
      Pdcp_stats_rx_bytes[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH] += sdu_buffer_size;
    } else {
      Pdcp_stats_rx[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH]++;
      Pdcp_stats_rx_bytes[module_id][(rb_id & RAB_OFFSET2) >> RAB_SHIFT2][(rb_id & RAB_OFFSET) - DTCH] += sdu_buffer_size;
    }
  }

  free_mem_block(sdu_buffer);

  return TRUE;
}

//-----------------------------------------------------------------------------
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void pdcp_run (u32_t frame, u8 eNB_flag, u8 UE_index, u8 eNB_index) {
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  //-----------------------------------------------------------------------------

#ifndef NAS_NETLINK
#ifdef USER_MODE
#define PDCP_DUMMY_BUFFER_SIZE 38
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  unsigned char pdcp_dummy_buffer[PDCP_DUMMY_BUFFER_SIZE];
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#endif
#endif
//     unsigned int diff, i, k, j;
//     unsigned char *otg_pkt=NULL;
//     int src_id, module_id; // src for otg
//     int dst_id, rb_id; // dst for otg
//     int service_id, session_id;
//     int pkt_size=0;
//     unsigned int ctime=0;

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  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
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    /*
      if ((frame % 128) == 0) {
      for (i=0; i < NB_UE_INST; i++) {
      for (j=0; j < NB_CNX_CH; j++) {
      for (k=0; k < NB_RAB_MAX; k++) {
      diff = Pdcp_stats_tx_bytes[i][j][k];
      Pdcp_stats_tx_bytes[i][j][k] = 0;
      Pdcp_stats_tx_rate[i][j][k] = (diff*8) >> 7;

      diff = Pdcp_stats_rx_bytes[i][j][k];
      Pdcp_stats_rx_bytes[i][j][k] = 0;
      Pdcp_stats_rx_rate[i][j][k] = (diff*8) >> 7;
      }
      }
      }
      }
    */

  pdcp_fifo_read_input_sdus_from_otg(frame, eNB_flag, UE_index, eNB_index);

  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
512
  pdcp_fifo_read_input_sdus(frame, eNB_flag, UE_index, eNB_index);
513 514

  // PDCP -> NAS/IP traffic: RX
515
  pdcp_fifo_flush_sdus(frame, eNB_flag);
516 517 518 519 520 521 522

  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
}

BOOL rrc_pdcp_config_asn1_req (module_id_t module_id, u32_t frame, u8_t eNB_flag, u32_t index,
                               SRB_ToAddModList_t* srb2add_list,
                               DRB_ToAddModList_t* drb2add_list,
523 524 525 526 527
                               DRB_ToReleaseList_t*  drb2release_list,
                               u8 security_mode,
                               u8 *kRRCenc,
                               u8 *kRRCint,
                               u8 *kUPenc
528
#ifdef Rel10
529
                              ,PMCH_InfoList_r9_t*  pmch_InfoList_r9
530 531 532
#endif
                               ){

533 534 535
  long int        rb_id          = 0;
  long int        lc_id          = 0;
  long int        srb_id         = 0;
536
  long int        mch_id         = 0;
537 538 539 540 541 542 543
  rlc_mode_t      rlc_type       = RLC_NONE;
  DRB_Identity_t  drb_id         = 0;
  DRB_Identity_t* pdrb_id        = NULL;
  u8              drb_sn         = 0;
  u8              srb_sn         = 5; // fixed sn for SRBs
  u8              drb_report     = 0;
  long int        cnt            = 0;
544
  u16 header_compression_profile = 0;
545 546 547
  u32 action                     = ACTION_ADD;
  SRB_ToAddMod_t* srb_toaddmod   = NULL;
  DRB_ToAddMod_t* drb_toaddmod   = NULL;
548 549 550 551 552 553 554 555 556 557 558 559 560 561

#ifdef Rel10
  int i,j;
  MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9;
  MBMS_SessionInfo_r9_t     *MBMS_SessionInfo= NULL;
#endif

  LOG_D(PDCP, "[MOD_id %d]CONFIG REQ ASN1 for %s %d\n",module_id,
        (eNB_flag == 1)? "eNB": "UE", index);
  // srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels

  if (srb2add_list != NULL) {
    for (cnt=0;cnt<srb2add_list->list.count;cnt++) {
      srb_id = srb2add_list->list.array[cnt]->srb_Identity;
562
      lc_id = srb_id; 
563
      rb_id = (index * NB_RB_MAX) + srb_id;
564
      if (pdcp_array[module_id][rb_id].instanciated_instance == module_id + 1)
565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590
        action = ACTION_MODIFY;
      else
        action = ACTION_ADD;
      srb_toaddmod = srb2add_list->list.array[cnt];
      rlc_type = RLC_MODE_AM;
      if (srb_toaddmod->rlc_Config) {
        switch (srb_toaddmod->rlc_Config->present) {
        case SRB_ToAddMod__rlc_Config_PR_NOTHING:
          break;
        case SRB_ToAddMod__rlc_Config_PR_explicitValue:
          switch (srb_toaddmod->rlc_Config->choice.explicitValue.present) {
          case RLC_Config_PR_NOTHING:
            break;
          default:
            pdcp_config_req_asn1 (module_id,
                                  frame,
                                  eNB_flag, // not really required
                                  index, // ue/enb index : used for log
                                  rlc_type,
                                  action,
                                  lc_id,
                                  mch_id,
                                  rb_id,
                                  srb_sn,
                                  0, // drb_report
                                  0, // header compression
591 592 593 594
                                  security_mode,
                                  kRRCenc,
                                  kRRCint,
                                  kUPenc);
595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620
            break;
          }
          break;
        case SRB_ToAddMod__rlc_Config_PR_defaultValue:
          // already the default values
          break;
        default:;
        }
      }
    }
  }
  // reset the action

  if (drb2add_list != NULL) {
    for (cnt=0;cnt<drb2add_list->list.count;cnt++) {

      drb_toaddmod = drb2add_list->list.array[cnt];

      drb_id = drb_toaddmod->drb_Identity;

      if (drb_toaddmod->logicalChannelIdentity != null) {
        lc_id = *drb_toaddmod->logicalChannelIdentity;
      } else {
        lc_id = -1;
      }
      rb_id =  (index * NB_RB_MAX) + lc_id;
621
      if (pdcp_array[module_id][rb_id].instanciated_instance == module_id + 1)
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682
        action = ACTION_MODIFY;
      else
        action = ACTION_ADD;
      if (drb_toaddmod->pdcp_Config){
        if (drb_toaddmod->pdcp_Config->discardTimer) {
          // set the value of the timer
        }
        if (drb_toaddmod->pdcp_Config->rlc_AM) {
          drb_report = drb_toaddmod->pdcp_Config->rlc_AM->statusReportRequired;
          rlc_type =RLC_MODE_AM;
        }
        if (drb_toaddmod->pdcp_Config->rlc_UM){
          drb_sn = drb_toaddmod->pdcp_Config->rlc_UM->pdcp_SN_Size;
          rlc_type =RLC_MODE_UM;
        }
        switch (drb_toaddmod->pdcp_Config->headerCompression.present) {
        case PDCP_Config__headerCompression_PR_NOTHING:
        case PDCP_Config__headerCompression_PR_notUsed:
          header_compression_profile=0x0;
          break;
        case PDCP_Config__headerCompression_PR_rohc:
          // parse the struc and get the rohc profile
          if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0001)
            header_compression_profile=0x0001;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0002)
            header_compression_profile=0x0002;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0003)
            header_compression_profile=0x0003;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0004)
            header_compression_profile=0x0004;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0006)
            header_compression_profile=0x0006;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0101)
            header_compression_profile=0x0101;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0102)
            header_compression_profile=0x0102;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0103)
            header_compression_profile=0x0103;
          else if(drb_toaddmod->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0104)
            header_compression_profile=0x0104;
          else {
            header_compression_profile=0x0;
            LOG_W(PDCP,"unknown header compresion profile\n");
          }
          // set the applicable profile
          break;
        default:
          LOG_W(PDCP,"[MOD_id %d][RB %d] unknown drb_toaddmod->PDCP_Config->headerCompression->present \n",module_id,drb_id);
        }
        pdcp_config_req_asn1 (module_id,
                              frame,
                              eNB_flag, // not really required
                              index,
                              rlc_type,
                              action,
                              lc_id,
                              mch_id,
                              rb_id,
                              drb_sn,
                              drb_report,
                              header_compression_profile,
683 684 685 686
                              security_mode,
                              kRRCenc,
                              kRRCint,
                              kUPenc);
687 688 689 690 691 692 693
      }
    }
  }

  if (drb2release_list != NULL) {
    for (cnt=0;cnt<drb2add_list->list.count;cnt++) {
      pdrb_id = drb2release_list->list.array[cnt];
694
      rb_id =  (index * NB_RB_MAX) + *pdrb_id;
695 696 697 698 699 700 701 702 703 704 705 706 707
      action = ACTION_REMOVE;
      pdcp_config_req_asn1 (module_id,
                            frame,
                            eNB_flag, // not really required
                            index,
                            rlc_type,
                            action,
                            lc_id,
                            mch_id,
                            rb_id,
                            0,
                            0,
                            0,
708 709 710 711
                            security_mode,
                            kRRCenc,
                            kRRCint,
                            kUPenc);
712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746
    }
  }

#ifdef Rel10
  if (pmch_InfoList_r9 != NULL){
    for (i=0;i<pmch_InfoList_r9->list.count;i++){
      mbms_SessionInfoList_r9 = &(pmch_InfoList_r9->list.array[i]->mbms_SessionInfoList_r9);
      for (j=0;j<mbms_SessionInfoList_r9->list.count;j++) {
        MBMS_SessionInfo = mbms_SessionInfoList_r9->list.array[j];
        //lc_id = MBMS_SessionInfo->logicalChannelIdentity_r9; // lcid
        lc_id = MBMS_SessionInfo->sessionId_r9->buf[0];
        mch_id = MBMS_SessionInfo->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string
        // can set the mch_id = i
        if (eNB_flag)
          rb_id =  (mch_id * maxSessionPerPMCH ) + lc_id ;
        else
          rb_id =  (mch_id * maxSessionPerPMCH ) + lc_id + (maxDRB + 3);
        if (pdcp_mbms_array[module_id][rb_id].instanciated_instance == module_id + 1)
          action = ACTION_MBMS_MODIFY;
        else
          action = ACTION_MBMS_ADD;

        rlc_type = RLC_MODE_UM;
        pdcp_config_req_asn1 (module_id,
                              frame,
                              eNB_flag, // not really required
                              index,
                              rlc_type,
                              action,
                              lc_id,
                              mch_id,
                              rb_id,
                              0, // set to deafult
                              0,
                              0,
747 748 749 750
                              security_mode,
                              kRRCenc,
                              kRRCint,
                              kUPenc);
751 752 753 754 755 756 757 758 759 760 761 762
      }
    }
  }
#endif

  return 1;

}

BOOL pdcp_config_req_asn1 (module_id_t module_id, u32 frame, u8_t eNB_flag, u16 index,
                           rlc_mode_t rlc_mode, u32  action, u16 lc_id,u16 mch_id, rb_id_t rb_id,
                           u8 rb_sn, u8 rb_report, u16 header_compression_profile,
763 764 765 766
                           u8 security_mode,
                           u8 *kRRCenc,
                           u8 *kRRCint,
                           u8 *kUPenc){
767 768
  switch (action) {
  case ACTION_ADD:
769 770 771 772 773
    pdcp_array[module_id][rb_id].instanciated_instance = module_id + 1;
    pdcp_array[module_id][rb_id].is_ue = (eNB_flag == 0) ? 1 : 0;
    pdcp_array[module_id][rb_id].lcid = lc_id;
    pdcp_array[module_id][rb_id].header_compression_profile=header_compression_profile;
    pdcp_array[module_id][rb_id].status_report = rb_report;
774
    if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits)
775
      pdcp_array[module_id][rb_id].seq_num_size = 7;
776
    else if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits)
777
      pdcp_array[module_id][rb_id].seq_num_size=12;
778
    else
779
      pdcp_array[module_id][rb_id].seq_num_size=5;
780

781 782 783 784 785 786 787
    pdcp_array[module_id][rb_id].rlc_mode = rlc_mode;
    pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
    pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
    pdcp_array[module_id][rb_id].tx_hfn = 0;
    pdcp_array[module_id][rb_id].rx_hfn = 0;
    pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
    pdcp_array[module_id][rb_id].first_missing_pdu = -1;
788

789
    LOG_I(PDCP,"[%s %d] Config request : Action ADD for %s %d: Frame %d LCID %d (rb id %d) configured with SN size %d bits and RLC %s\n",
790 791
          (eNB_flag) ? "eNB" : "UE", module_id,
          (eNB_flag) ? "UE" : "eNB", index,
792
          frame, lc_id, rb_id, pdcp_array[module_id][rb_id].seq_num_size,
793 794
          (rlc_mode == 1) ? "AM" : (rlc_mode == 2) ? "TM" : "UM");

795 796 797 798 799
    /* Setup security */
    if (security_mode != 0xff) {
        pdcp_config_set_security(module_id, frame, eNB_flag, rb_id, lc_id, security_mode, kRRCenc, kRRCint, kUPenc);
    }

800 801 802 803
    LOG_D(PDCP,  "[MSC_NEW][FRAME %05d][PDCP][MOD %02d][RB %02d]\n", frame, module_id,rb_id);

    break;
    case ACTION_MODIFY:
804 805 806
    pdcp_array[module_id][rb_id].header_compression_profile=header_compression_profile;
    pdcp_array[module_id][rb_id].status_report = rb_report;
    pdcp_array[module_id][rb_id].rlc_mode = rlc_mode;
807

808 809 810 811 812
    /* Setup security */
    if (security_mode != 0xff) {
        pdcp_config_set_security(module_id, frame, eNB_flag, rb_id, lc_id, security_mode, kRRCenc, kRRCint, kUPenc);
    }

813
    if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits)
814
      pdcp_array[module_id][rb_id].seq_num_size = 7;
815
    else if (rb_sn == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits)
816
      pdcp_array[module_id][rb_id].seq_num_size=12;
817
    else
818
      pdcp_array[module_id][rb_id].seq_num_size=5;
819

820
    LOG_I(PDCP,"[%s %d] Config request : Action MODIFY for %s %d: Frame %d LCID %d RB id %d configured with SN size %d and RLC %s \n",
821 822
          (eNB_flag) ? "eNB" : "UE", module_id,
          (eNB_flag) ? "UE" : "eNB", index,
823
          frame, lc_id, rb_id, rb_sn,
824 825 826 827
          (rlc_mode == 1) ? "AM" : (rlc_mode == 2) ? "TM" : "UM");

    break;
    case ACTION_REMOVE:
828 829 830 831 832 833 834 835 836 837 838 839 840 841 842
    pdcp_array[module_id][rb_id].instanciated_instance = 0;
    pdcp_array[module_id][rb_id].lcid= 0;
    pdcp_array[module_id][rb_id].header_compression_profile=0x0;
    pdcp_array[module_id][rb_id].cipheringAlgorithm=0xff;
    pdcp_array[module_id][rb_id].integrityProtAlgorithm=0xff;
    pdcp_array[module_id][rb_id].status_report = 0;
    pdcp_array[module_id][rb_id].rlc_mode = RLC_NONE;
    pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
    pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
    pdcp_array[module_id][rb_id].tx_hfn = 0;
    pdcp_array[module_id][rb_id].rx_hfn = 0;
    pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
    pdcp_array[module_id][rb_id].seq_num_size = 0;
    pdcp_array[module_id][rb_id].first_missing_pdu = -1;
    pdcp_array[module_id][rb_id].security_activated = 0;
843

844
    LOG_I(PDCP,"[%s %d] Config request : ACTION_REMOVE: Frame %d LCID %d RBID %d configured\n",
845 846
          (eNB_flag) ? "eNB" : "UE", module_id, frame, lc_id, rb_id);
    /* Security keys */
847 848
    if (pdcp_array[module_id][rb_id].kUPenc != NULL) {
        free(pdcp_array[module_id][rb_id].kUPenc);
849
    }
850 851
    if (pdcp_array[module_id][rb_id].kRRCint != NULL) {
        free(pdcp_array[module_id][rb_id].kRRCint);
852
    }
853 854
    if (pdcp_array[module_id][rb_id].kRRCenc != NULL) {
        free(pdcp_array[module_id][rb_id].kRRCenc);
855 856
    }

857 858 859 860

    break;
    case ACTION_MBMS_ADD:
    case ACTION_MBMS_MODIFY:
861 862 863 864
    pdcp_mbms_array[module_id][rb_id].instanciated_instance = module_id + 1 ;
    pdcp_mbms_array[module_id][rb_id].service_id = mch_id;
    pdcp_mbms_array[module_id][rb_id].session_id = lc_id;
    pdcp_mbms_array[module_id][rb_id].rb_id = rb_id;
865 866 867 868
    LOG_I(PDCP,"[%s %d] Config request : ACTION_MBMS_ADD: Frame %d service_id/mch index %d, session_id/lcid %d, rbid %d configured\n",
          (eNB_flag == 1) ? "eNB" : "UE", module_id, frame, mch_id, lc_id, rb_id);
    break;
    case ACTION_SET_SECURITY_MODE:
869 870
        pdcp_config_set_security(module_id, frame, eNB_flag, rb_id, lc_id, security_mode, kRRCenc, kRRCint, kUPenc);
        break;
871
    default:
872 873
        LOG_W(PDCP,"unknown action %d for the config request\n",action);
        break;
874 875 876
  }
  return 0;
}
877 878 879 880 881

void pdcp_config_set_security(module_id_t module_id, u32 frame, u8 eNB_flag, rb_id_t rb_id,
                              u16 lc_id, u8 security_mode, u8 *kRRCenc, u8 *kRRCint, u8 *kUPenc)
{
    if ((security_mode >= 0) && (security_mode <= 0x77)) {
882 883
        pdcp_array[module_id][rb_id].cipheringAlgorithm     = security_mode & 0x0f;
        pdcp_array[module_id][rb_id].integrityProtAlgorithm = (security_mode>>4) & 0xf;
884 885 886
        LOG_D(PDCP,"[%s %d][RB %02d] Set security mode : ACTION_SET_SECURITY_MODE: "
              "Frame %d  cipheringAlgorithm %d integrityProtAlgorithm %d\n",
              (eNB_flag) ? "eNB" : "UE", module_id, rb_id, frame,
887 888 889 890 891
              pdcp_array[module_id][rb_id].cipheringAlgorithm,
              pdcp_array[module_id][rb_id].integrityProtAlgorithm);
        pdcp_array[module_id][rb_id].kRRCenc = kRRCenc;
        pdcp_array[module_id][rb_id].kRRCint = kRRCint;
        pdcp_array[module_id][rb_id].kUPenc  = kUPenc;
892 893

        /* Activate security */
894
        pdcp_array[module_id][rb_id].security_activated = 1;
895 896 897 898 899
    } else {
        LOG_D(PDCP,"[%s %d] bad security mode %d", security_mode);
    }
}

900
void rrc_pdcp_config_req (module_id_t module_id, u32 frame, u8_t eNB_flag, u32  action, rb_id_t rb_id, u8 security_mode){
901 902 903 904 905 906

  /*
     * Initialize sequence number state variables of relevant PDCP entity
     */
  switch (action) {
  case ACTION_ADD:
907
    pdcp_array[module_id][rb_id].instanciated_instance = module_id + 1;
908
    
909 910 911 912
    pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
    pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
    pdcp_array[module_id][rb_id].tx_hfn = 0;
    pdcp_array[module_id][rb_id].rx_hfn = 0;
913
    /* SN of the last PDCP SDU delivered to upper layers */
914
    pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
915 916

    if ( (rb_id % NB_RB_MAX) < DTCH) // SRB
917
      pdcp_array[module_id][rb_id].seq_num_size = 5;
918
    else // DRB
919 920
      pdcp_array[module_id][rb_id].seq_num_size = 12;
    pdcp_array[module_id][rb_id].first_missing_pdu = -1;
921 922 923 924 925 926 927
    LOG_D(PDCP,"[%s %d] Config request : Action ADD: Frame %d radio bearer id %d configured\n",
          (eNB_flag) ? "eNB" : "UE", module_id, frame, rb_id);
    LOG_D(PDCP,  "[MSC_NEW][FRAME %05d][PDCP][MOD %02d][RB %02d]\n", frame, module_id,rb_id);
    break;
    case ACTION_MODIFY:
    break;
    case ACTION_REMOVE:
928 929 930 931 932 933 934 935
    pdcp_array[module_id][rb_id].instanciated_instance = 0;
    pdcp_array[module_id][rb_id].next_pdcp_tx_sn = 0;
    pdcp_array[module_id][rb_id].next_pdcp_rx_sn = 0;
    pdcp_array[module_id][rb_id].tx_hfn = 0;
    pdcp_array[module_id][rb_id].rx_hfn = 0;
    pdcp_array[module_id][rb_id].last_submitted_pdcp_rx_sn = 4095;
    pdcp_array[module_id][rb_id].seq_num_size = 0;
    pdcp_array[module_id][rb_id].first_missing_pdu = -1;
936
    pdcp_array[module_id][rb_id].security_activated = 0;
937 938 939 940 941 942
    LOG_D(PDCP,"[%s %d] Config request : ACTION_REMOVE: Frame %d radio bearer id %d configured\n",
          (eNB_flag) ? "eNB" : "UE", module_id, frame, rb_id);

    break;
    case ACTION_SET_SECURITY_MODE:
    if ((security_mode >= 0 ) && (security_mode <=0x77)) {
943 944
      pdcp_array[module_id][rb_id].cipheringAlgorithm= security_mode & 0x0f;
      pdcp_array[module_id][rb_id].integrityProtAlgorithm = (security_mode>>4) & 0xf;
945 946
      LOG_D(PDCP,"[%s %d] Set security mode : ACTION_SET_SECURITY_MODE: Frame %d  cipheringAlgorithm %d integrityProtAlgorithm %d\n",
            (eNB_flag) ? "eNB" : "UE", module_id, frame,
947 948
            pdcp_array[module_id][rb_id].cipheringAlgorithm,
            pdcp_array[module_id][rb_id].integrityProtAlgorithm );
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
    }else
      LOG_D(PDCP,"[%s %d] bad security mode %d", security_mode);
    break;
    default:
    break;
  }

}

// TODO PDCP module initialization code might be removed
int
    pdcp_module_init ()
{
  //-----------------------------------------------------------------------------
#ifdef NAS_FIFO
  int ret;

  ret=rtf_create(PDCP2NAS_FIFO,32768);

  if (ret < 0) {
    LOG_E(PDCP, "Cannot create PDCP2NAS fifo %d (ERROR %d)\n", PDCP2NAS_FIFO, ret);

    return -1;
  } else {
    LOG_D(PDCP, "Created PDCP2NAS fifo %d\n", PDCP2NAS_FIFO);
    rtf_reset(PDCP2NAS_FIFO);
  }

  ret=rtf_create(NAS2PDCP_FIFO,32768);

  if (ret < 0) {
    LOG_E(PDCP, "Cannot create NAS2PDCP fifo %d (ERROR %d)\n", NAS2PDCP_FIFO, ret);

    return -1;
  } else {
    LOG_D(PDCP, "Created NAS2PDCP fifo %d\n", NAS2PDCP_FIFO);
    rtf_reset(NAS2PDCP_FIFO);
  }

  pdcp_2_nas_irq = 0;
  pdcp_input_sdu_remaining_size_to_read=0;
  pdcp_input_sdu_size_read=0;
#endif

  return 0;

}

//-----------------------------------------------------------------------------
void
    pdcp_module_cleanup ()
    //-----------------------------------------------------------------------------
{
#ifdef NAS_FIFO
  rtf_destroy(NAS2PDCP_FIFO);
  rtf_destroy(PDCP2NAS_FIFO);
#endif
}

//-----------------------------------------------------------------------------
void
    pdcp_layer_init ()
{
  //-----------------------------------------------------------------------------
  unsigned int i, j, k;

  /*
    * Initialize SDU list
    */
  list_init(&pdcp_sdu_list, NULL);
  for (i=0; i < MAX_MODULES; i++) {
1020
    for (j=0; j < NB_RB_MAX; j++) {
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082
      memset((void*)&pdcp_array[i][j], 0, sizeof(pdcp_t));
    }

  }
  for (i=0; i < MAX_MODULES; i++) { // MAX service
    for (j=0; j < 16*29; j++) { // max session
      memset((void*)&pdcp_mbms_array[i][j], 0, sizeof(pdcp_mbms_t));
    }
  }

  LOG_I(PDCP, "PDCP layer has been initialized\n");
  pdcp_output_sdu_bytes_to_write=0;
  pdcp_output_header_bytes_to_write=0;
  pdcp_input_sdu_remaining_size_to_read=0;
  /*
    * Initialize PDCP entities (see pdcp_t at pdcp.h)
    */
  // set RB for eNB : this is now down by RRC for each mod id and rab id when needed.
  /*  for (i=0;i  < NB_eNB_INST; i++) {
       for (j=NB_eNB_INST; j < NB_eNB_INST+NB_UE_INST; j++ ) {
       pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DCCH, DCCH  ); // default DRB
       pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DCCH1, DCCH1  ); // default DRB
       pdcp_config_req(i, (j-NB_eNB_INST) * NB_RB_MAX + DTCH, DTCH  ); // default DRB
       }
       }
       // set RB for UE
       for (i=NB_eNB_INST;i<NB_eNB_INST+NB_UE_INST; i++) {
       for (j=0;j<NB_eNB_INST; j++) {
       pdcp_config_req(i, j * NB_RB_MAX + DCCH, DCCH ); // default DRB
       pdcp_config_req(i, j * NB_RB_MAX + DCCH1, DCCH1 ); // default DRB
       pdcp_config_req(i, j * NB_RB_MAX + DTCH, DTCH ); // default DRB
       }
       }*/

  for (i=0;i<NB_UE_INST;i++) { // ue
    for (k=0;k<NB_eNB_INST;k++) { // enb
      for(j=0;j<NB_RAB_MAX;j++) {//rb
        Pdcp_stats_tx[i][k][j]=0;
        Pdcp_stats_tx_bytes[i][k][j]=0;
        Pdcp_stats_tx_bytes_last[i][k][j]=0;
        Pdcp_stats_tx_rate[i][k][j]=0;

        Pdcp_stats_rx[i][k][j]=0;
        Pdcp_stats_rx_bytes[i][k][j]=0;
        Pdcp_stats_rx_bytes_last[i][k][j]=0;
        Pdcp_stats_rx_rate[i][k][j]=0;
      }
    }
  }
}

//-----------------------------------------------------------------------------
void
    pdcp_layer_cleanup ()
    //-----------------------------------------------------------------------------
{
  list_free (&pdcp_sdu_list);
}

#ifdef NAS_FIFO
EXPORT_SYMBOL(pdcp_2_nas_irq);
#endif //NAS_FIFO