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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * 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.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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/*! \file pdcp.c
 * \brief pdcp interface with RLC
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 * \author Navid Nikaein and Lionel GAUTHIER
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 * \date 2009-2012
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 * \email navid.nikaein@eurecom.fr
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 * \version 1.0
 */

#define PDCP_C
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//#define DEBUG_PDCP_FIFO_FLUSH_SDU

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#define MBMS_MULTICAST_OUT

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#include "assertions.h"
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#include "hashtable.h"
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#include "pdcp.h"
#include "pdcp_util.h"
#include "pdcp_sequence_manager.h"
#include "LAYER2/RLC/rlc.h"
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#include "LAYER2/MAC/mac_extern.h"
#include "RRC/LTE/rrc_proto.h"
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#include "pdcp_primitives.h"
#include "OCG.h"
#include "OCG_extern.h"
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#include "otg_rx.h"
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#include "common/utils/LOG/log.h"
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#include <inttypes.h>
#include "platform_constants.h"
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#include "common/utils/LOG/vcd_signal_dumper.h"
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#include "msc.h"
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#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif

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#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

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#if defined(LINK_ENB_PDCP_TO_GTPV1U)
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#  include "gtpv1u_eNB_task.h"
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#  include "gtpv1u.h"
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#endif

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#include "ENB_APP/enb_config.h"
#include "LAYER2/PROTO_AGENT/proto_agent.h"

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extern int otg_enabled;

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#include "common/ran_context.h"
extern RAN_CONTEXT_t RC;
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#ifdef MBMS_MULTICAST_OUT
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# include <netinet/ip.h>
# include <netinet/udp.h>
# include <unistd.h>

static int mbms_socket = -1;
#endif

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//-----------------------------------------------------------------------------
/*
 * 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()
 */
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boolean_t pdcp_data_req(
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  protocol_ctxt_t*  ctxt_pP,
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  const srb_flag_t     srb_flagP,
  const rb_id_t        rb_idP,
  const mui_t          muiP,
  const confirm_t      confirmP,
  const sdu_size_t     sdu_buffer_sizeP,
  unsigned char *const sdu_buffer_pP,
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  const pdcp_transmission_mode_t modeP
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#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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    ,const uint32_t * const sourceL2Id
    ,const uint32_t * const destinationL2Id
#endif
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)
//-----------------------------------------------------------------------------
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{
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  pdcp_t            *pdcp_p          = NULL;
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  uint8_t            i               = 0;
  uint8_t            pdcp_header_len = 0;
  uint8_t            pdcp_tailer_len = 0;
  uint16_t           pdcp_pdu_size   = 0;
  uint16_t           current_sn      = 0;
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  mem_block_t       *pdcp_pdu_p      = NULL;
  rlc_op_status_t    rlc_status;
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  boolean_t          ret             = TRUE;
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  hash_key_t         key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t     h_rc;
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  uint8_t            rb_offset= (srb_flagP == 0) ? DTCH -1 : 0;
  uint16_t           pdcp_uid=0;
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_IN);
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  CHECK_CTXT_ARGS(ctxt_pP);
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#if T_TRACER
  if (ctxt_pP->enb_flag != ENB_FLAG_NO)
    T(T_ENB_PDCP_DL, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->rnti), T_INT(rb_idP), T_INT(sdu_buffer_sizeP));
#endif

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  if (sdu_buffer_sizeP == 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?
   */
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  AssertFatal(sdu_buffer_sizeP<= MAX_IP_PACKET_SIZE,"Requested SDU size (%d) is bigger than that can be handled by PDCP (%u)!\n",
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          sdu_buffer_sizeP, MAX_IP_PACKET_SIZE);
  
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  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
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    AssertError (rb_idP < NB_RB_MBMS_MAX, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, NB_RB_MBMS_MAX, ctxt_pP->module_id, ctxt_pP->rnti);
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  } else {
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    if (srb_flagP) {
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      AssertError (rb_idP < 3, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, 3, ctxt_pP->module_id, ctxt_pP->rnti);
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    } else {
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      AssertError (rb_idP < maxDRB, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, maxDRB, ctxt_pP->module_id, ctxt_pP->rnti);
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    }
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  }
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  key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, rb_idP, srb_flagP);
  h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);
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  if (h_rc != HASH_TABLE_OK) {
    if (modeP != PDCP_TRANSMISSION_MODE_TRANSPARENT) {
      LOG_W(PDCP, PROTOCOL_CTXT_FMT" Instance is not configured for rb_id %d Ignoring SDU...\n",
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	    PROTOCOL_CTXT_ARGS(ctxt_pP),
	    rb_idP);
      ctxt_pP->configured=FALSE;
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      return FALSE;
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    }
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  }else{
    // instance for a given RB is configured
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    ctxt_pP->configured=TRUE;
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  }
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  if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
  } else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
  }
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  // PDCP transparent mode for MBMS traffic
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  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
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    LOG_D(PDCP, " [TM] Asking for a new mem_block of size %d\n",sdu_buffer_sizeP);
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    pdcp_pdu_p = get_free_mem_block(sdu_buffer_sizeP, __func__);
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    if (pdcp_pdu_p != NULL) {
      memcpy(&pdcp_pdu_p->data[0], sdu_buffer_pP, sdu_buffer_sizeP);
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#if defined(DEBUG_PDCP_PAYLOAD)
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      rlc_util_print_hex_octets(PDCP,
                                (unsigned char*)&pdcp_pdu_p->data[0],
                                sdu_buffer_sizeP);
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#endif
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      rlc_status = rlc_data_req(ctxt_pP, srb_flagP, MBMS_FLAG_YES, rb_idP, muiP, confirmP, sdu_buffer_sizeP, pdcp_pdu_p
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#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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                                ,NULL, NULL
#endif
                                );
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    } else {
      rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
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      LOG_W(PDCP,PROTOCOL_CTXT_FMT" PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
            PROTOCOL_CTXT_ARGS(ctxt_pP));
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#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
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      AssertFatal(0, PROTOCOL_CTXT_FMT"[RB %u] PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
                  PROTOCOL_CTXT_ARGS(ctxt_pP),
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                  rb_idP);
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#endif
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    }
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  } else {
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    // calculate the pdcp header and trailer size
    if (srb_flagP) {
      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_sizeP + pdcp_header_len + pdcp_tailer_len;
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    LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT"Data request notification  pdu size %d (header%d, trailer%d)\n",
          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
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          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)
     */
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    pdcp_pdu_p = get_free_mem_block(pdcp_pdu_size, __func__);
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    if (pdcp_pdu_p != NULL) {
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      /*
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       * Create a Data PDU with header and append data
       *
       * Place User Plane PDCP Data PDU header first
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       */
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      if (srb_flagP) { // this Control plane PDCP Data PDU
        pdcp_control_plane_data_pdu_header pdu_header;
        pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp_p);
        current_sn = pdu_header.sn;
        memset(&pdu_header.mac_i[0],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
        memset(&pdcp_pdu_p->data[sdu_buffer_sizeP + pdcp_header_len],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
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        if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
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          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
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          if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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            stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
          } else {
            stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
          }
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          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
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          return FALSE;
        }
      } else {
        pdcp_user_plane_data_pdu_header_with_long_sn pdu_header;
        pdu_header.dc = (modeP == PDCP_TRANSMISSION_MODE_DATA) ? PDCP_DATA_PDU_BIT_SET :  PDCP_CONTROL_PDU_BIT_SET;
        pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp_p);
        current_sn = pdu_header.sn ;
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        if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
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          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
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          if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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            stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
          } else {
            stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
          }
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          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
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          return FALSE;
        }
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      }
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      /*
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       * Validate incoming sequence number, there might be a problem with PDCP initialization
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       */
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      if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp_p->seq_num_size)) {
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        LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Generated sequence number (%"PRIu16") is greater than a sequence number could ever be!\n"\
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              "There must be a problem with PDCP initialization, ignoring this PDU...\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
              current_sn);
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        free_mem_block(pdcp_pdu_p, __func__);
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        if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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          stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
        } else {
          stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
        }
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        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
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        return FALSE;
      }

      LOG_D(PDCP, "Sequence number %d is assigned to current PDU\n", current_sn);

      /* Then append data... */
      memcpy(&pdcp_pdu_p->data[pdcp_header_len], sdu_buffer_pP, sdu_buffer_sizeP);

      //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.
      // 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_p->data[pdcp_header_len + sdu_buffer_sizeP + i] = 0x00;// pdu_header.mac_i[i];
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      }
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#if defined(ENABLE_SECURITY)

      if ((pdcp_p->security_activated != 0) &&
          (((pdcp_p->cipheringAlgorithm) != 0) ||
           ((pdcp_p->integrityProtAlgorithm) != 0))) {

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        if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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          start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].apply_security);
        } else {
          start_meas(&UE_pdcp_stats[ctxt_pP->module_id].apply_security);
        }
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        pdcp_apply_security(ctxt_pP,
                            pdcp_p,
                            srb_flagP,
                            rb_idP % maxDRB,
                            pdcp_header_len,
                            current_sn,
                            pdcp_pdu_p->data,
                            sdu_buffer_sizeP);

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        if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
          stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].apply_security);
        } else {
          stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].apply_security);
        }
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      }

#endif

      /* 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_p->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");

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      if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
        stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
      } else {
        stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
      }
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#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
      AssertFatal(0, "[FRAME %5u][%s][PDCP][MOD %u/%u][RB %u] PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
                  ctxt_pP->frame,
                  (ctxt_pP->enb_flag) ? "eNB" : "UE",
                  ctxt_pP->enb_module_id,
                  ctxt_pP->ue_module_id,
                  rb_idP);
#endif
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
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      return FALSE;
    }

    /*
     * Ask sublayer to transmit data and check return value
     * to see if RLC succeeded
     */

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    LOG_DUMPMSG(PDCP,DEBUG_PDCP,(char *)pdcp_pdu_p->data,pdcp_pdu_size,
                "[MSG] PDCP DL %s PDU on rb_id %d\n",(srb_flagP)? "CONTROL" : "DATA", rb_idP);
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    LOG_F(PDCP,"\n");
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#ifndef UETARGET
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    static cudu_params_t *cudu = NULL;
    if (ctxt_pP->enb_flag == 1)
    {
	if (cudu == NULL) 
	{
	  cudu = get_cudu_config();
	}
	static int agent_started = 1;
	if (agent_started == 1)
	{
	    for (int k =0; k<cudu->serving_dus; k++)
	    { 
	      proto_agent_start(0, cudu->cu[k].cu_id, cudu->cu[k].du_type, cudu);
	    }
	    agent_started = 0;
	}
    }
    if ((pdcp_pdu_p!=NULL) && (srb_flagP == 0) && (ctxt_pP->enb_flag == 1))
    {
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      if (cudu->cu_balancing == CU_BALANCING_ALL)
      {
	for (int j =0; j<cudu->serving_dus; j++)
	{
	  proto_agent_send_rlc_data_req(0,cudu->cu[j].du_type, ctxt_pP, srb_flagP, MBMS_FLAG_NO,rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
	}
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    rlc_status = rlc_data_req(ctxt_pP, srb_flagP, MBMS_FLAG_NO, rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p
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#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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                             ,sourceL2Id
                             ,destinationL2Id
#endif
                             );
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      }
      else if (cudu->cu_balancing == CU_BALANCING_ROUND_ROBIN)
      {
	int selected_du = select_du(cudu->serving_dus);
	proto_agent_send_rlc_data_req(cudu->cu[selected_du].cu_id,cudu->cu[selected_du].du_type,ctxt_pP, srb_flagP, MBMS_FLAG_NO,rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
      }
	else
	{
	    int index = cudu->cu_balancing;
	    proto_agent_send_rlc_data_req(cudu->cu[index].cu_id,cudu->cu[index].du_type,ctxt_pP, srb_flagP, MBMS_FLAG_NO,rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
	}
    
    free_mem_block(pdcp_pdu_p, __FUNCTION__);
    rlc_status = ack_result;
    }
    else
    {
      //It should never get here
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      rlc_status = rlc_data_req(ctxt_pP
                              , srb_flagP
                              , MBMS_FLAG_NO
                              , rb_idP
                              , muiP
                              , confirmP
                              , pdcp_pdu_size
                              , pdcp_pdu_p
      #ifdef Rel14
                              ,NULL
                              ,NULL
      #endif
                              );
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    }
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#endif /*UETARGET*/ 
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  }
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  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
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    ret=TRUE;
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    break;

  case RLC_OP_STATUS_BAD_PARAMETER:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
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    ret= FALSE;
    break;
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  case RLC_OP_STATUS_INTERNAL_ERROR:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
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    ret= FALSE;
    break;
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  case RLC_OP_STATUS_OUT_OF_RESSOURCES:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
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    ret= FALSE;
    break;
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  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);
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    ret= FALSE;
    break;
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  }
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  if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
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    stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
  } else {
    stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
  }
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  /*
   * Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
   * so we return TRUE afterwards
   */
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  for (pdcp_uid=0; pdcp_uid< MAX_MOBILES_PER_ENB;pdcp_uid++){
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    if (pdcp_enb[ctxt_pP->module_id].rnti[pdcp_uid] == ctxt_pP->rnti ) 
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      break;
  }

  //LOG_I(PDCP,"ueid %d lcid %d tx seq num %d\n", pdcp_uid, rb_idP+rb_offset, current_sn);
  Pdcp_stats_tx[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]++;
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  Pdcp_stats_tx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]++;
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  Pdcp_stats_tx_bytes[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+=sdu_buffer_sizeP;
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  Pdcp_stats_tx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+=sdu_buffer_sizeP;
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  Pdcp_stats_tx_sn[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]=current_sn;
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  Pdcp_stats_tx_aiat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+= (pdcp_enb[ctxt_pP->module_id].sfn - Pdcp_stats_tx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]);
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  Pdcp_stats_tx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+= (pdcp_enb[ctxt_pP->module_id].sfn - Pdcp_stats_tx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]); 
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  Pdcp_stats_tx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]=pdcp_enb[ctxt_pP->module_id].sfn;
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
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  return ret;
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}

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//-----------------------------------------------------------------------------
boolean_t
pdcp_data_ind(
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  const protocol_ctxt_t* const ctxt_pP,
  const srb_flag_t   srb_flagP,
  const MBMS_flag_t  MBMS_flagP,
  const rb_id_t      rb_idP,
  const sdu_size_t   sdu_buffer_sizeP,
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  mem_block_t* const sdu_buffer_pP
)
//-----------------------------------------------------------------------------
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{
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  pdcp_t      *pdcp_p          = NULL;
  list_t      *sdu_list_p      = NULL;
  mem_block_t *new_sdu_p       = NULL;
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  uint8_t      pdcp_header_len = 0;
  uint8_t      pdcp_tailer_len = 0;
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  pdcp_sn_t    sequence_number = 0;
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  volatile sdu_size_t   payload_offset  = 0;
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  rb_id_t      rb_id            = rb_idP;
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  boolean_t    packet_forwarded = FALSE;
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  hash_key_t      key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
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  uint8_t      rb_offset= (srb_flagP == 0) ? DTCH -1 :0;
  uint16_t     pdcp_uid=0;      
  uint8_t      oo_flag=0;
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#if defined(LINK_ENB_PDCP_TO_GTPV1U)
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  MessageDef  *message_p        = NULL;
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  uint8_t     *gtpu_buffer_p    = NULL;
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#endif
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_IN);
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  LOG_DUMPMSG(PDCP,DEBUG_PDCP,(char *)sdu_buffer_pP->data,sdu_buffer_sizeP,
              "[MSG] PDCP UL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);
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#if T_TRACER
  if (ctxt_pP->enb_flag != ENB_FLAG_NO)
    T(T_ENB_PDCP_UL, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->rnti), T_INT(rb_idP), T_INT(sdu_buffer_sizeP));
#endif

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  if (MBMS_flagP) {
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    AssertError (rb_idP < NB_RB_MBMS_MAX, return FALSE,
                 "RB id is too high (%u/%d) %u rnti %x!\n",
                 rb_idP,
                 NB_RB_MBMS_MAX,
                 ctxt_pP->module_id,
                 ctxt_pP->rnti);
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    if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
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      LOG_D(PDCP, "e-MBMS Data indication notification for PDCP entity from eNB %u to UE %x "
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            "and radio bearer ID %d rlc sdu size %d ctxt_pP->enb_flag %d\n",
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            ctxt_pP->module_id,
            ctxt_pP->rnti,
            rb_idP,
            sdu_buffer_sizeP,
            ctxt_pP->enb_flag);
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    } else {
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      LOG_D(PDCP, "Data indication notification for PDCP entity from UE %x to eNB %u "
            "and radio bearer ID %d rlc sdu size %d ctxt_pP->enb_flag %d\n",
            ctxt_pP->rnti,
            ctxt_pP->module_id ,
            rb_idP,
            sdu_buffer_sizeP,
            ctxt_pP->enb_flag);
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    }
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  } else {
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    rb_id = rb_idP % maxDRB;
    AssertError (rb_id < maxDRB, return FALSE, "RB id is too high (%u/%d) %u UE %x!\n",
                 rb_id,
                 maxDRB,
                 ctxt_pP->module_id,
                 ctxt_pP->rnti);
    AssertError (rb_id > 0, return FALSE, "RB id is too low (%u/%d) %u UE %x!\n",
                 rb_id,
                 maxDRB,
                 ctxt_pP->module_id,
                 ctxt_pP->rnti);
    key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, rb_id, srb_flagP);
    h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);

    if (h_rc != HASH_TABLE_OK) {
      LOG_W(PDCP,
            PROTOCOL_CTXT_FMT"Could not get PDCP instance key 0x%"PRIx64"\n",
            PROTOCOL_CTXT_ARGS(ctxt_pP),
            key);
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      free_mem_block(sdu_buffer_pP, __func__);
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
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      return FALSE;
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    }
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  }
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  sdu_list_p = &pdcp_sdu_list;
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  if (sdu_buffer_sizeP == 0) {
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    LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
    return FALSE;
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  }
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  if (ctxt_pP->enb_flag) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_ind);
  } else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_ind);
  }
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  /*
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   * Parse the PDU placed at the beginning of SDU to check
   * if incoming SN is in line with RX window
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   */
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  if (MBMS_flagP == 0 ) {
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    if (srb_flagP) { //SRB1/2
      pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
      pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
      sequence_number =   pdcp_get_sequence_number_of_pdu_with_SRB_sn((unsigned char*)sdu_buffer_pP->data);
    } else { // DRB
      pdcp_tailer_len = 0;
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      if (pdcp_p->seq_num_size == PDCP_SN_7BIT) {
        pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_SHORT_SN_HEADER_SIZE;
        sequence_number =     pdcp_get_sequence_number_of_pdu_with_short_sn((unsigned char*)sdu_buffer_pP->data);
      } else if (pdcp_p->seq_num_size == PDCP_SN_12BIT) {
        pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
        sequence_number =     pdcp_get_sequence_number_of_pdu_with_long_sn((unsigned char*)sdu_buffer_pP->data);
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      } else {
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        //sequence_number = 4095;
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        LOG_E(PDCP,
              PROTOCOL_PDCP_CTXT_FMT"wrong sequence number  (%d) for this pdcp entity \n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
              pdcp_p->seq_num_size);
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      }
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      //uint8_t dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer_pP->data);
    }
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    /*
     * Check if incoming SDU is long enough to carry a PDU header
     */
    if (sdu_buffer_sizeP < pdcp_header_len + pdcp_tailer_len ) {
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      LOG_W(PDCP,
            PROTOCOL_PDCP_CTXT_FMT"Incoming (from RLC) SDU is short of size (size:%d)! Ignoring...\n",
            PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
            sdu_buffer_sizeP);
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      free_mem_block(sdu_buffer_pP, __func__);
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      if (ctxt_pP->enb_flag) {
        stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_ind);
      } else {
        stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_ind);
      }
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
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      return FALSE;
    }

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    if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp_p, srb_flagP) == TRUE) {
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      LOG_T(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window\n", sequence_number);
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      /* if (dc == PDCP_DATA_PDU )
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      LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
      else
      LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
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    } else {
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      oo_flag=1;
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      LOG_W(PDCP,
            PROTOCOL_PDCP_CTXT_FMT"Incoming PDU has an unexpected sequence number (%d), RX window synchronisation have probably been lost!\n",
            PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
            sequence_number);
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      /*
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       * XXX Till we implement in-sequence delivery and duplicate discarding
       * mechanism all out-of-order packets will be delivered to RRC/IP
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       */
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      LOG_W(PDCP, "Ignoring PDU...\n");
      free_mem_block(sdu_buffer_pP, __func__);
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      return FALSE;
    }
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    // SRB1/2: control-plane data
    if (srb_flagP) {
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#if defined(ENABLE_SECURITY)
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      if (pdcp_p->security_activated == 1) {
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        if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
          start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].validate_security);
        } else {
          start_meas(&UE_pdcp_stats[ctxt_pP->module_id].validate_security);
        }
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        pdcp_validate_security(ctxt_pP,
                               pdcp_p,
                               srb_flagP,
                               rb_idP,
                               pdcp_header_len,
                               sequence_number,
                               sdu_buffer_pP->data,
                               sdu_buffer_sizeP - pdcp_tailer_len);

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        if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
          stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].validate_security);
        } else {
          stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].validate_security);
        }
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      }
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#endif
      //rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
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  	MSC_LOG_TX_MESSAGE(
  	    (ctxt_pP->enb_flag == ENB_FLAG_NO)? MSC_PDCP_UE:MSC_PDCP_ENB,
        (ctxt_pP->enb_flag == ENB_FLAG_NO)? MSC_RRC_UE:MSC_RRC_ENB,
        NULL,0,
        PROTOCOL_PDCP_CTXT_FMT" DATA-IND len %u",
        PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
        sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len);
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        rrc_data_ind(ctxt_pP,
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		   rb_id,
		   sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len,
		   (uint8_t*)&sdu_buffer_pP->data[pdcp_header_len]);
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        free_mem_block(sdu_buffer_pP, __func__);
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      // free_mem_block(new_sdu, __func__);
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      if (ctxt_pP->enb_flag) {
        stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_ind);
      } else {
        stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_ind);
      }
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      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
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      return TRUE;
    }
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    /*
     * DRBs
     */
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    payload_offset=pdcp_header_len;// PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
#if defined(ENABLE_SECURITY)
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    if (pdcp_p->security_activated == 1) {
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      if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
        start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].validate_security);
      } else {
        start_meas(&UE_pdcp_stats[ctxt_pP->module_id].validate_security);
      }
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      pdcp_validate_security(
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        ctxt_pP,
        pdcp_p,
        srb_flagP,
        rb_idP,
        pdcp_header_len,
        sequence_number,
        sdu_buffer_pP->data,
        sdu_buffer_sizeP - pdcp_tailer_len);

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      if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
        stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].validate_security);
      } else {
        stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].validate_security);
      }
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    }
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#endif
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  } else {
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    payload_offset=0;
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  }
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  if (otg_enabled==1) {
    LOG_D(OTG,"Discarding received packed\n");
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    free_mem_block(sdu_buffer_pP, __func__);
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    if (ctxt_pP->enb_flag) {
      stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_ind);
    } else {
      stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_ind);
    }
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    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
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    return TRUE;
  }

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  // 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)
   */
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#if defined(LINK_ENB_PDCP_TO_GTPV1U)
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  if ((TRUE == ctxt_pP->enb_flag) && (FALSE == srb_flagP)) {
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    MSC_LOG_TX_MESSAGE(
    		MSC_PDCP_ENB,
    		MSC_GTPU_ENB,
    		NULL,0,
    		"0 GTPV1U_ENB_TUNNEL_DATA_REQ  ue %x rab %u len %u",
    		ctxt_pP->rnti,
    		rb_id + 4,
    		sdu_buffer_sizeP - payload_offset);
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    //LOG_T(PDCP,"Sending to GTPV1U %d bytes\n", sdu_buffer_sizeP - payload_offset);
    gtpu_buffer_p = itti_malloc(TASK_PDCP_ENB, TASK_GTPV1_U,
                                sdu_buffer_sizeP - payload_offset + GTPU_HEADER_OVERHEAD_MAX);
    AssertFatal(gtpu_buffer_p != NULL, "OUT OF MEMORY");
    memcpy(&gtpu_buffer_p[GTPU_HEADER_OVERHEAD_MAX], &sdu_buffer_pP->data[payload_offset], sdu_buffer_sizeP - payload_offset);
    message_p = itti_alloc_new_message(TASK_PDCP_ENB, GTPV1U_ENB_TUNNEL_DATA_REQ);
    AssertFatal(message_p != NULL, "OUT OF MEMORY");
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).buffer       = gtpu_buffer_p;
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).length       = sdu_buffer_sizeP - payload_offset;
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).offset       = GTPU_HEADER_OVERHEAD_MAX;
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    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rnti         = ctxt_pP->rnti;
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    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rab_id       = rb_id + 4;
    itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
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    packet_forwarded = TRUE;    
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  }
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#else
  packet_forwarded = FALSE;
#endif
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#ifdef MBMS_MULTICAST_OUT
  if ((MBMS_flagP != 0) && (mbms_socket != -1)) {
    struct iphdr   *ip_header = (struct iphdr*)&sdu_buffer_pP->data[payload_offset];
    struct udphdr *udp_header = (struct udphdr*)&sdu_buffer_pP->data[payload_offset + sizeof(struct iphdr)];
    struct sockaddr_in dest_addr;

    dest_addr.sin_family      = AF_INET;
    dest_addr.sin_port        = udp_header->dest;
    dest_addr.sin_addr.s_addr = ip_header->daddr;

    sendto(mbms_socket, &sdu_buffer_pP->data[payload_offset], sdu_buffer_sizeP - payload_offset, MSG_DONTWAIT, (struct sockaddr*)&dest_addr, sizeof(dest_addr));
    packet_forwarded = TRUE;
  }
#endif

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  if (FALSE == packet_forwarded) {
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    new_sdu_p = get_free_mem_block(sdu_buffer_sizeP - payload_offset + sizeof (pdcp_data_ind_header_t), __func__);
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    if (new_sdu_p) {
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      if ((MBMS_flagP == 0) && (pdcp_p->rlc_mode == RLC_MODE_AM)) {
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        pdcp_p->last_submitted_pdcp_rx_sn = sequence_number;
      }

      /*
       * Prepend PDCP indication header which is going to be removed at pdcp_fifo_flush_sdus()
       */
      memset(new_sdu_p->data, 0, sizeof (pdcp_data_ind_header_t));
      ((pdcp_data_ind_header_t *) new_sdu_p->data)->data_size = sdu_buffer_sizeP - payload_offset;
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      AssertFatal((sdu_buffer_sizeP - payload_offset >= 0), "invalid PDCP SDU size!");
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      // Here there is no virtualization possible
      // set ((pdcp_data_ind_header_t *) new_sdu_p->data)->inst for IP layer here
      if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
        ((pdcp_data_ind_header_t *) new_sdu_p->data)->rb_id = rb_id;
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#if defined(ENABLE_USE_MME)
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        /* for the UE compiled in S1 mode, we need 1 here
         * for the UE compiled in noS1 mode, we need 0
         * TODO: be sure of this
         */
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        ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst  = 1;
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#endif
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      } else {
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        ((pdcp_data_ind_header_t*) new_sdu_p->data)->rb_id = rb_id + (ctxt_pP->module_id * maxDRB);
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      }
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      ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst  = ctxt_pP->module_id;

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#ifdef DEBUG_PDCP_FIFO_FLUSH_SDU
      static uint32_t pdcp_inst = 0;
      ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst = pdcp_inst++;
      LOG_D(PDCP, "inst=%d size=%d\n", ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst, ((pdcp_data_ind_header_t *) new_sdu_p->data)->data_size);
#endif
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      memcpy(&new_sdu_p->data[sizeof (pdcp_data_ind_header_t)], \
             &sdu_buffer_pP->data[payload_offset], \
             sdu_buffer_sizeP - payload_offset);
      list_add_tail_eurecom (new_sdu_p, sdu_list_p);

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    }

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  /* 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_sizeP  - payload_offset + (int)sizeof(pdcp_data_ind_header_t),
	sdu_buffer_sizeP  - payload_offset);
  //util_print_hex_octets(PDCP, &new_sdu_p->data[sizeof (pdcp_data_ind_header_t)], sdu_buffer_sizeP - payload_offset);
  //util_flush_hex_octets(PDCP, &new_sdu_p->data[sizeof (pdcp_data_ind_header_t)], sdu_buffer_sizeP - payload_offset);
  
  /*
     * Update PDCP statistics
   * XXX Following two actions are identical, is there a merge error?
   */
  
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  for (pdcp_uid=0; pdcp_uid< MAX_MOBILES_PER_ENB;pdcp_uid++){
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    if (pdcp_enb[ctxt_pP->module_id].rnti[pdcp_uid] == ctxt_pP->rnti ){
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      break;
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    }
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  }	
  
  Pdcp_stats_rx[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]++;
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  Pdcp_stats_rx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]++;
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  Pdcp_stats_rx_bytes[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+=(sdu_buffer_sizeP  - payload_offset);
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  Pdcp_stats_rx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+=(sdu_buffer_sizeP  - payload_offset);
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  Pdcp_stats_rx_sn[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]=sequence_number;
  
  if (oo_flag == 1 )
    Pdcp_stats_rx_outoforder[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]++;
  
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  Pdcp_stats_rx_aiat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+= (pdcp_enb[ctxt_pP->module_id].sfn - Pdcp_stats_rx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]);
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  Pdcp_stats_rx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]+=(pdcp_enb[ctxt_pP->module_id].sfn - Pdcp_stats_rx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]);
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  Pdcp_stats_rx_iat[ctxt_pP->module_id][pdcp_uid][rb_idP+rb_offset]=pdcp_enb[ctxt_pP->module_id].sfn;
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#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
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    else {
      AssertFatal(0, PROTOCOL_PDCP_CTXT_FMT" PDCP_DATA_IND SDU DROPPED, OUT OF MEMORY \n",
                  PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p));
    }
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#endif
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  }

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  free_mem_block(sdu_buffer_pP, __func__);
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  if (ctxt_pP->enb_flag) {
    stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_ind);
  } else {
    stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_ind);
  }
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
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  return TRUE;
}

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void pdcp_update_stats(const protocol_ctxt_t* const  ctxt_pP){

944
  uint16_t           pdcp_uid = 0;
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  uint8_t            rb_id     = 0;
  
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 // these stats are measured for both eNB and UE on per seond basis 
948
  for (rb_id =0; rb_id < NB_RB_MAX; rb_id ++){
949
    for (pdcp_uid=0; pdcp_uid< MAX_MOBILES_PER_ENB;pdcp_uid++){
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      //printf("frame %d and subframe %d \n", pdcp_enb[ctxt_pP->module_id].frame, pdcp_enb[ctxt_pP->module_id].subframe);
      // tx stats
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      if (Pdcp_stats_tx_window_ms[ctxt_pP->module_id][pdcp_uid] > 0 &&
          pdcp_enb[ctxt_pP->module_id].sfn % Pdcp_stats_tx_window_ms[ctxt_pP->module_id][pdcp_uid] == 0){
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	// unit: bit/s
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	Pdcp_stats_tx_throughput_w[ctxt_pP->module_id][pdcp_uid][rb_id]=Pdcp_stats_tx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]*8;
	Pdcp_stats_tx_w[ctxt_pP->module_id][pdcp_uid][rb_id]= Pdcp_stats_tx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id];
	Pdcp_stats_tx_bytes_w[ctxt_pP->module_id][pdcp_uid][rb_id]= Pdcp_stats_tx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id];
	if (Pdcp_stats_tx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id] > 0){
	  Pdcp_stats_tx_aiat_w[ctxt_pP->module_id][pdcp_uid][rb_id]=(Pdcp_stats_tx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]/Pdcp_stats_tx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]);
	}else {
	  Pdcp_stats_tx_aiat_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	}
	// reset the tmp vars 
	Pdcp_stats_tx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	Pdcp_stats_tx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	Pdcp_stats_tx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
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      }
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      if (Pdcp_stats_rx_window_ms[ctxt_pP->module_id][pdcp_uid] > 0 &&
          pdcp_enb[ctxt_pP->module_id].sfn % Pdcp_stats_rx_window_ms[ctxt_pP->module_id][pdcp_uid] == 0){
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	// rx stats
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	Pdcp_stats_rx_goodput_w[ctxt_pP->module_id][pdcp_uid][rb_id]=Pdcp_stats_rx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]*8;
	Pdcp_stats_rx_w[ctxt_pP->module_id][pdcp_uid][rb_id]= 	Pdcp_stats_rx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id];
	Pdcp_stats_rx_bytes_w[ctxt_pP->module_id][pdcp_uid][rb_id]= Pdcp_stats_rx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id];
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	if(Pdcp_stats_rx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id] > 0){
	  Pdcp_stats_rx_aiat_w[ctxt_pP->module_id][pdcp_uid][rb_id]= (Pdcp_stats_rx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]/Pdcp_stats_rx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]);
	} else {
	  Pdcp_stats_rx_aiat_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	}
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	// reset the tmp vars 
	Pdcp_stats_rx_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	Pdcp_stats_rx_bytes_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
	Pdcp_stats_rx_aiat_tmp_w[ctxt_pP->module_id][pdcp_uid][rb_id]=0;
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      } 
    }
988
    
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  }
}
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//-----------------------------------------------------------------------------
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void
pdcp_run (
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
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{
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  if (ctxt_pP->enb_flag) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_run);
  } else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_run);
  }
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  pdcp_enb[ctxt_pP->module_id].sfn++; // range: 0 to 18,446,744,073,709,551,615
  pdcp_enb[ctxt_pP->module_id].frame=ctxt_pP->frame; // 1023 
  pdcp_enb[ctxt_pP->module_id].subframe= ctxt_pP->subframe;
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  pdcp_update_stats(ctxt_pP);
   
1010
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
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1012
#if defined(ENABLE_ITTI)
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  MessageDef   *msg_p;
  int           result;
  protocol_ctxt_t  ctxt;
1016

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  do {
    // Checks if a message has been sent to PDCP sub-task
    itti_poll_msg (ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, &msg_p);

    if (msg_p != NULL) {

      switch (ITTI_MSG_ID(msg_p)) {
      case RRC_DCCH_DATA_REQ:
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	PROTOCOL_CTXT_SET_BY_MODULE_ID(
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          &ctxt,
          RRC_DCCH_DATA_REQ (msg_p).module_id,
          RRC_DCCH_DATA_REQ (msg_p).enb_flag,
          RRC_DCCH_DATA_REQ (msg_p).rnti,
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          RRC_DCCH_DATA_REQ (msg_p).frame, 
	  0,
	  RRC_DCCH_DATA_REQ (msg_p).eNB_index);
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        LOG_I(PDCP, PROTOCOL_CTXT_FMT"Received %s from %s: instance %d, rb_id %d, muiP %d, confirmP %d, mode %d\n",
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              PROTOCOL_CTXT_ARGS(&ctxt),
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              ITTI_MSG_NAME (msg_p),
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              ITTI_MSG_ORIGIN_NAME(msg_p),
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              ITTI_MSG_INSTANCE (msg_p),
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              RRC_DCCH_DATA_REQ (msg_p).rb_id,
              RRC_DCCH_DATA_REQ (msg_p).muip,
              RRC_DCCH_DATA_REQ (msg_p).confirmp,
              RRC_DCCH_DATA_REQ (msg_p).mode);
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        result = pdcp_data_req (&ctxt,
                                SRB_FLAG_YES,
                                RRC_DCCH_DATA_REQ (msg_p).rb_id,
                                RRC_DCCH_DATA_REQ (msg_p).muip,
                                RRC_DCCH_DATA_REQ (msg_p).confirmp,
                                RRC_DCCH_DATA_REQ (msg_p).sdu_size,
                                RRC_DCCH_DATA_REQ (msg_p).sdu_p,
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                                RRC_DCCH_DATA_REQ (msg_p).mode
1051
#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
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                                , NULL, NULL
#endif
                                );
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        if (result != TRUE)
          LOG_E(PDCP, "PDCP data request failed!\n");
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        // Message buffer has been processed, free it now.
        result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), RRC_DCCH_DATA_REQ (msg_p).sdu_p);
        AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
        break;

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      case RRC_PCCH_DATA_REQ:
      {
        sdu_size_t     sdu_buffer_sizeP;
        sdu_buffer_sizeP = RRC_PCCH_DATA_REQ(msg_p).sdu_size;
        uint8_t CC_id = RRC_PCCH_DATA_REQ(msg_p).CC_id;
        uint8_t ue_index = RRC_PCCH_DATA_REQ(msg_p).ue_index;
        RC.rrc[ctxt_pP->module_id]->carrier[CC_id].sizeof_paging[ue_index] = sdu_buffer_sizeP;
        if (sdu_buffer_sizeP > 0) {
        	memcpy(RC.rrc[ctxt_pP->module_id]->carrier[CC_id].paging[ue_index], RRC_PCCH_DATA_REQ(msg_p).sdu_p, sdu_buffer_sizeP);
        }
        //paging pdcp log
        LOG_D(PDCP, "PDCP Received RRC_PCCH_DATA_REQ CC_id %d length %d \n", CC_id, sdu_buffer_sizeP);
      }
      break;

1078
      default:
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        LOG_E(PDCP, "Received unexpected message %s\n", ITTI_MSG_NAME (msg_p));
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        break;
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      }
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      result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
      AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
    }
1086
  } while(msg_p != NULL);
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#endif
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  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
1091
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
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1093
  if (ctxt_pP->enb_flag == ENB_FLAG_NO)
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#endif
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  {
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    pdcp_fifo_read_input_sdus(ctxt_pP);
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  }
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1099
  // PDCP -> NAS/IP traffic: RX
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  if (ctxt_pP->enb_flag) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
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  else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
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  pdcp_fifo_flush_sdus(ctxt_pP);
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  if (ctxt_pP->enb_flag) {
    stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  } else {
    stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
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  if (ctxt_pP->enb_flag) {
    stop_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_run);
  } else {
    stop_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_run);
  }
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  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
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}

1124
void pdcp_add_UE(const protocol_ctxt_t* const  ctxt_pP){
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  int i, ue_flag=1; //, ret=-1; to be decied later
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  for (i=0; i < MAX_MOBILES_PER_ENB; i++){
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    if (pdcp_enb[ctxt_pP->module_id].rnti[i] == ctxt_pP->rnti) {
      ue_flag=-1;
      break;
    }
  }
  if (ue_flag == 1 ){
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    for (i=0; i < MAX_MOBILES_PER_ENB ; i++){
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      if (pdcp_enb[ctxt_pP->module_id].rnti[i] == 0 ){
	pdcp_enb[ctxt_pP->module_id].rnti[i]=ctxt_pP->rnti;
	pdcp_enb[ctxt_pP->module_id].uid[i]=i;
	pdcp_enb[ctxt_pP->module_id].num_ues++;
	printf("add new uid is %d %x\n\n", i, ctxt_pP->rnti);
1139
	// ret=1;
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	break;
      }
    }
  }
  //return ret;
}
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//-----------------------------------------------------------------------------
boolean_t
pdcp_remove_UE(
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
{
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  DRB_Identity_t  srb_id         = 0;
  DRB_Identity_t  drb_id         = 0;
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  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
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  int i; 
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   // check and remove SRBs first
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  for(int i = 0;i<MAX_MOBILES_PER_ENB;i++){
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    if(pdcp_eNB_UE_instance_to_rnti[i] == ctxt_pP->rnti){
      pdcp_eNB_UE_instance_to_rnti[i] = NOT_A_RNTI;
      break;
    }
  }

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  for (srb_id=1; srb_id<3; srb_id++) {
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    key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, srb_id, SRB_FLAG_YES);
    h_rc = hashtable_remove(pdcp_coll_p, key);
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  }

1173
  for (drb_id=0; drb_id<maxDRB; drb_id++) {
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    key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, drb_id, SRB_FLAG_NO);
    h_rc = hashtable_remove(pdcp_coll_p, key);
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  }

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  (void)h_rc; /* remove gcc warning "set but not used" */

1181
  // remove ue for pdcp enb inst
1182
   for (i=0; i < MAX_MOBILES_PER_ENB; i++) {
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    if (pdcp_enb[ctxt_pP->module_id].rnti[i] == ctxt_pP->rnti ) {
      LOG_I(PDCP, "remove uid is %d/%d %x\n", i,
	    pdcp_enb[ctxt_pP->module_id].uid[i],
	    pdcp_enb[ctxt_pP->module_id].rnti[i]);
      pdcp_enb[ctxt_pP->module_id].uid[i]=0;
      pdcp_enb[ctxt_pP->module_id].rnti[i]=0;
      pdcp_enb[ctxt_pP->module_id].num_ues--;
      break;
    }
  }
   
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  return 1;
}


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//-----------------------------------------------------------------------------
boolean_t
rrc_pdcp_config_asn1_req (
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  const protocol_ctxt_t* const  ctxt_pP,
  SRB_ToAddModList_t  *const srb2add_list_pP,
  DRB_ToAddModList_t  *const drb2add_list_pP,
  DRB_ToReleaseList_t *const drb2release_list_pP,
  const uint8_t                   security_modeP,
  uint8_t                  *const kRRCenc_pP,
  uint8_t                  *const kRRCint_pP,
  uint8_t                  *const kUPenc_pP
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#if (RRC_VERSION >= MAKE_VERSION(9, 0, 0))
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  ,PMCH_InfoList_r9_t*  const pmch_InfoList_r9_pP
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#endif
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  ,rb_id_t                 *const defaultDRB 
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)
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//-----------------------------------------------------------------------------
1215
{
1216
  long int        lc_id          = 0;
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  DRB_Identity_t  srb_id         = 0;
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  long int        mch_id         = 0;
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  rlc_mode_t      rlc_type       = RLC_MODE_NONE;
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  DRB_Identity_t  drb_id         = 0;
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  DRB_Identity_t *pdrb_id_p      = NULL;
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  uint8_t         drb_sn         = 12;
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  uint8_t         srb_sn         = 5; // fixed sn for SRBs
  uint8_t         drb_report     = 0;
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  long int        cnt            = 0;
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  uint16_t        header_compression_profile = 0;
  config_action_t action                     = CONFIG_ACTION_ADD;
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  SRB_ToAddMod_t *srb_toaddmod_p = NULL;
  DRB_ToAddMod_t *drb_toaddmod_p = NULL;
  pdcp_t         *pdcp_p         = NULL;
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  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
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  hash_key_t      key_defaultDRB = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_defaultDRB_rc;
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#if (RRC_VERSION >= MAKE_VERSION(9, 0, 0))
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  int i,j;
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  MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9_p = NULL;
  MBMS_SessionInfo_r9_t     *MBMS_SessionInfo_p        = NULL;
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#endif

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  LOG_T(PDCP, PROTOCOL_CTXT_FMT" %s() SRB2ADD %p DRB2ADD %p DRB2RELEASE %p\n",
        PROTOCOL_CTXT_ARGS(ctxt_pP),
        __FUNCTION__,
        srb2add_list_pP,
        drb2add_list_pP,
        drb2release_list_pP);
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  // srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels

1251
  if (srb2add_list_pP != NULL) {
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    for (cnt=0; cnt<srb2add_list_pP->list.count; cnt++) {
      srb_id = srb2add_list_pP->list.array[cnt]->srb_Identity;
      srb_toaddmod_p = srb2add_list_pP->list.array[cnt];
      rlc_type = RLC_MODE_AM;
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      lc_id = srb_id;
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      key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, srb_id, SRB_FLAG_YES);
      h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);
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      if (h_rc == HASH_TABLE_OK) {
        action = CONFIG_ACTION_MODIFY;
        LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_MODIFY key 0x%"PRIx64"\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
              key);
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      } else {
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        action = CONFIG_ACTION_ADD;
        pdcp_p = calloc(1, sizeof(pdcp_t));
        h_rc = hashtable_insert(pdcp_coll_p, key, pdcp_p);
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        if (h_rc != HASH_TABLE_OK) {
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_ADD key 0x%"PRIx64" FAILED\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
                key);
          free(pdcp_p);
          return TRUE;
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1277
      } else {
1278
	  LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_ADD key 0x%"PRIx64"\n",
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                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
                key);
        }
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
      }

      if (srb_toaddmod_p->rlc_Config) {
        switch (srb_toaddmod_p->rlc_Config->present) {
        case SRB_ToAddMod__rlc_Config_PR_NOTHING:
          break;

        case SRB_ToAddMod__rlc_Config_PR_explicitValue:
          switch (srb_toaddmod_p->rlc_Config->choice.explicitValue.present) {
          case RLC_Config_PR_NOTHING:
            break;
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1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311
          default:
            pdcp_config_req_asn1 (
              ctxt_pP,
              pdcp_p,
              SRB_FLAG_YES,
              rlc_type,
              action,
              lc_id,
              mch_id,
              srb_id,
              srb_sn,
              0, // drb_report
              0, // header compression
              security_modeP,
              kRRCenc_pP,
              kRRCint_pP,
              kUPenc_pP);
            break;
1312
          }
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          break;

        case SRB_ToAddMod__rlc_Config_PR_defaultValue:
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        	pdcp_config_req_asn1 (
        	              ctxt_pP,
        	              pdcp_p,
        	              SRB_FLAG_YES,
        	              rlc_type,
        	              action,
        	              lc_id,
        	              mch_id,
        	              srb_id,
        	              srb_sn,
        	              0, // drb_report
        	              0, // header compression
        	              security_modeP,
        	              kRRCenc_pP,
        	              kRRCint_pP,
        	              kUPenc_pP);
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          // already the default values
          break;

        default:
1337
          DevParam(srb_toaddmod_p->rlc_Config->present, ctxt_pP->module_id, ctxt_pP->rnti);
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          break;
        }
1340
      }
1341
    }
1342
  }
1343

1344 1345
  // reset the action

1346
  if (drb2add_list_pP != NULL) {
1347
    for (cnt=0; cnt<drb2add_list_pP->list.count; cnt++) {
1348

1349
      drb_toaddmod_p = drb2add_list_pP->list.array[cnt];
1350

1351
      drb_id = drb_toaddmod_p->drb_Identity;// + drb_id_offset;
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      if (drb_toaddmod_p->logicalChannelIdentity) {
        lc_id = *(drb_toaddmod_p->logicalChannelIdentity);
      } else {
        LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" logicalChannelIdentity is missing in DRB-ToAddMod information element!\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p));
        continue;
      }

      if (lc_id == 1 || lc_id == 2) {
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1361
        LOG_E(RLC, PROTOCOL_CTXT_FMT" logicalChannelIdentity = %ld is invalid in RRC message when adding DRB!\n", PROTOCOL_CTXT_ARGS(ctxt_pP), lc_id);
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        continue;
      }
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      DevCheck4(drb_id < maxDRB, drb_id, maxDRB, ctxt_pP->module_id, ctxt_pP->rnti);
      key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, drb_id, SRB_FLAG_NO);
      h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);
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      if (h_rc == HASH_TABLE_OK) {
        action = CONFIG_ACTION_MODIFY;
        LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_MODIFY key 0x%"PRIx64"\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
              key);
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1375 1376
      } else {
        action = CONFIG_ACTION_ADD;
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        pdcp_p = calloc(1, sizeof(pdcp_t));
        h_rc = hashtable_insert(pdcp_coll_p, key, pdcp_p);

1380
        // save the first configured DRB-ID as the default DRB-ID
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        if ((defaultDRB != NULL) && (*defaultDRB == drb_id)) {
          key_defaultDRB = PDCP_COLL_KEY_DEFAULT_DRB_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag);
          h_defaultDRB_rc = hashtable_insert(pdcp_coll_p, key_defaultDRB, pdcp_p);
        } else {
          h_defaultDRB_rc = HASH_TABLE_OK; // do not trigger any error handling if this is not a default DRB
        }

        if (h_defaultDRB_rc != HASH_TABLE_OK) {
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_ADD ADD default DRB key 0x%"PRIx64" FAILED\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
                key_defaultDRB);
          free(pdcp_p);
          return TRUE;
1394
        } else if (h_rc != HASH_TABLE_OK) {
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          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_ADD ADD key 0x%"PRIx64" FAILED\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
                key);
          free(pdcp_p);
          return TRUE;
        } else {
          LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_ADD ADD key 0x%"PRIx64"\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
                key);
         }
      }
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      if (drb_toaddmod_p->pdcp_Config) {
        if (drb_toaddmod_p->pdcp_Config->discardTimer) {
          // set the value of the timer
        }

        if (drb_toaddmod_p->pdcp_Config->rlc_AM) {
          drb_report = drb_toaddmod_p->pdcp_Config->rlc_AM->statusReportRequired;
          drb_sn = PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits; // default SN size
          rlc_type = RLC_MODE_AM;
        }

        if (drb_toaddmod_p->pdcp_Config->rlc_UM) {
          drb_sn = drb_toaddmod_p->pdcp_Config->rlc_UM->pdcp_SN_Size;
          rlc_type =RLC_MODE_UM;
        }

        switch (drb_toaddmod_p->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
1432
          if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0001) {
1433
            header_compression_profile=0x0001;
1434
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0002) {
1435
            header_compression_profile=0x0002;
1436
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0003) {
1437
            header_compression_profile=0x0003;
1438
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0004) {
1439
            header_compression_profile=0x0004;
1440
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0006) {
1441
            header_compression_profile=0x0006;
1442
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0101) {
1443
            header_compression_profile=0x0101;
1444
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0102) {
1445
            header_compression_profile=0x0102;
1446
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0103) {
1447
            header_compression_profile=0x0103;
1448
          } else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0104) {
1449
            header_compression_profile=0x0104;
1450
          } else {
1451 1452
            header_compression_profile=0x0;
            LOG_W(PDCP,"unknown header compresion profile\n");
1453
          }
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          // set the applicable profile
          break;

        default:
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1459
          LOG_W(PDCP,PROTOCOL_PDCP_CTXT_FMT"[RB %ld] unknown drb_toaddmod->PDCP_Config->headerCompression->present \n",
1460
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p), drb_id);
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          break;
        }

        pdcp_config_req_asn1 (
          ctxt_pP,
          pdcp_p,
          SRB_FLAG_NO,
          rlc_type,
          action,
          lc_id,
          mch_id,
          drb_id,
          drb_sn,
          drb_report,
          header_compression_profile,
          security_modeP,
          kRRCenc_pP,
          kRRCint_pP,
          kUPenc_pP);
1480
      }
1481
    }
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  }

1484
  if (drb2release_list_pP != NULL) {
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    for (cnt=0; cnt<drb2release_list_pP->list.count; cnt++) {
      pdrb_id_p = drb2release_list_pP->list.array[cnt];
      drb_id =  *pdrb_id_p;
1488
      key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, drb_id, SRB_FLAG_NO);
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      h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);

      if (h_rc != HASH_TABLE_OK) {
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1492
        LOG_E(PDCP, PROTOCOL_CTXT_FMT" PDCP REMOVE FAILED drb_id %ld\n",
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              PROTOCOL_CTXT_ARGS(ctxt_pP),
              drb_id);
        continue;
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      }
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      lc_id = pdcp_p->lcid;
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      action = CONFIG_ACTION_REMOVE;
      pdcp_config_req_asn1 (
        ctxt_pP,
        pdcp_p,
        SRB_FLAG_NO,
        rlc_type,
        action,
        lc_id,
        mch_id,
        drb_id,
        0,
        0,
        0,
        security_modeP,
        kRRCenc_pP,
        kRRCint_pP,
        kUPenc_pP);
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      h_rc = hashtable_remove(pdcp_coll_p, key);
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      if ((defaultDRB != NULL) && (*defaultDRB == drb_id)) {
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        // default DRB being removed. nevertheless this shouldn't happen as removing default DRB is not allowed in standard
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        key_defaultDRB = PDCP_COLL_KEY_DEFAULT_DRB_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag);
        h_defaultDRB_rc = hashtable_get(pdcp_coll_p, key_defaultDRB, (void**)&pdcp_p);

        if (h_defaultDRB_rc == HASH_TABLE_OK) {
          h_defaultDRB_rc = hashtable_remove(pdcp_coll_p, key_defaultDRB);
        } else {
          LOG_E(PDCP, PROTOCOL_CTXT_FMT" PDCP REMOVE FAILED default DRB\n", PROTOCOL_CTXT_ARGS(ctxt_pP));
        }
      } else {
        key_defaultDRB = HASH_TABLE_OK; // do not trigger any error handling if this is not a default DRB
      }
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    }
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  }

1534
#if (RRC_VERSION >= MAKE_VERSION(9, 0, 0))
1535

1536
  if (pmch_InfoList_r9_pP != NULL) {
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    for (i=0; i<pmch_InfoList_r9_pP->list.count; i++) {
      mbms_SessionInfoList_r9_p = &(pmch_InfoList_r9_pP->list.array[i]->mbms_SessionInfoList_r9);

      for (j=0; j<mbms_SessionInfoList_r9_p->list.count; j++) {
        MBMS_SessionInfo_p = mbms_SessionInfoList_r9_p->list.array[j];
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        if (MBMS_SessionInfo_p->sessionId_r9)
          lc_id = MBMS_SessionInfo_p->sessionId_r9->buf[0];
        else
          lc_id = MBMS_SessionInfo_p->logicalChannelIdentity_r9;
1546
        mch_id = MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string
1547
//        mch_id = j;
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        // can set the mch_id = i
        if (ctxt_pP->enb_flag) {
          drb_id =  (mch_id * maxSessionPerPMCH ) + lc_id ;//+ (maxDRB + 3)*MAX_MOBILES_PER_ENB; // 1

1553
          if (pdcp_mbms_array_eNB[ctxt_pP->module_id][mch_id][lc_id].instanciated_instance == TRUE) {
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            action = CONFIG_ACTION_MBMS_MODIFY;
          } else {
            action = CONFIG_ACTION_MBMS_ADD;
          }
        } else {
          drb_id =  (mch_id * maxSessionPerPMCH ) + lc_id; // + (maxDRB + 3); // 15

1561
          if (pdcp_mbms_array_ue[ctxt_pP->module_id][mch_id][lc_id].instanciated_instance == TRUE) {
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            action = CONFIG_ACTION_MBMS_MODIFY;
          } else {
            action = CONFIG_ACTION_MBMS_ADD;
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          }
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        }

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        LOG_D(PDCP, "lc_id (%02ld) mch_id(%02x,%02x,%02x) drb_id(%ld) action(%d)\n",
          lc_id,
          MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[0],
          MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[1],
          MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[2],
          drb_id,
          action);

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        pdcp_config_req_asn1 (
          ctxt_pP,
          NULL,  // unused for MBMS
          SRB_FLAG_NO,
          RLC_MODE_NONE,
          action,
          lc_id,
          mch_id,
          drb_id,
          0,   // unused for MBMS
          0,   // unused for MBMS
          0,   // unused for MBMS
          0,   // unused for MBMS
          NULL,  // unused for MBMS
          NULL,  // unused for MBMS
          NULL); // unused for MBMS
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      }
1593
    }
1594
  }
1595

1596
#endif
1597
  return 0;
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}

1600
//-----------------------------------------------------------------------------
1601 1602
boolean_t
pdcp_config_req_asn1 (
1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
  const protocol_ctxt_t* const  ctxt_pP,
  pdcp_t         * const        pdcp_pP,
  const srb_flag_t              srb_flagP,
  const rlc_mode_t              rlc_modeP,
  const config_action_t         actionP,
  const uint16_t                lc_idP,
  const uint16_t                mch_idP,
  const rb_id_t                 rb_idP,
  const uint8_t                 rb_snP,
  const uint8_t                 rb_reportP,
  const uint16_t                header_compression_profileP,
  const uint8_t                 security_modeP,
  uint8_t         *const        kRRCenc_pP,
  uint8_t         *const        kRRCint_pP,
  uint8_t         *const        kUPenc_pP)
1618
//-----------------------------------------------------------------------------
1619
{
1620
  
1621
  switch (actionP) {
1622
  case CONFIG_ACTION_ADD:
1623
    DevAssert(pdcp_pP != NULL);
1624 1625
    if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
      pdcp_pP->is_ue = FALSE;
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1626
      pdcp_add_UE(ctxt_pP);
1627
      
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1628
      //pdcp_eNB_UE_instance_to_rnti[ctxtP->module_id] = ctxt_pP->rnti;
1629 1630
//      pdcp_eNB_UE_instance_to_rnti[pdcp_eNB_UE_instance_to_rnti_index] = ctxt_pP->rnti;
      if( srb_flagP == SRB_FLAG_NO ) {
1631
          for(int i = 0;i<MAX_MOBILES_PER_ENB;i++){
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              if(pdcp_eNB_UE_instance_to_rnti[pdcp_eNB_UE_instance_to_rnti_index] == NOT_A_RNTI){
                  break;
              }
1635
              pdcp_eNB_UE_instance_to_rnti_index = (pdcp_eNB_UE_instance_to_rnti_index + 1) % MAX_MOBILES_PER_ENB;
1636 1637
          }
          pdcp_eNB_UE_instance_to_rnti[pdcp_eNB_UE_instance_to_rnti_index] = ctxt_pP->rnti;
1638
          pdcp_eNB_UE_instance_to_rnti_index = (pdcp_eNB_UE_instance_to_rnti_index + 1) % MAX_MOBILES_PER_ENB;
1639
      }
1640
      //pdcp_eNB_UE_instance_to_rnti_index = (pdcp_eNB_UE_instance_to_rnti_index + 1) % MAX_MOBILES_PER_ENB;
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    } else {
      pdcp_pP->is_ue = TRUE;
      pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id] = ctxt_pP->rnti;
    }
1645
    pdcp_pP->is_srb                     = (srb_flagP == SRB_FLAG_YES) ? TRUE : FALSE;
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1646
    pdcp_pP->lcid                       = lc_idP;
1647
    pdcp_pP->rb_id                      = rb_idP;
1648
    pdcp_pP->header_compression_profile = header_compression_profileP;
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1649
    pdcp_pP->status_report              = rb_reportP;
1650

1651
    if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits) {
1652
      pdcp_pP->seq_num_size = PDCP_SN_12BIT;
1653
    } else if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
1654
      pdcp_pP->seq_num_size = PDCP_SN_7BIT;
1655
    } else {
1656
      pdcp_pP->seq_num_size = PDCP_SN_5BIT;
1657
    }
1658

1659

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    pdcp_pP->rlc_mode                         = rlc_modeP;
    pdcp_pP->next_pdcp_tx_sn                  = 0;
    pdcp_pP->next_pdcp_rx_sn                  = 0;
    pdcp_pP->next_pdcp_rx_sn_before_integrity = 0;
    pdcp_pP->tx_hfn                           = 0;
    pdcp_pP->rx_hfn                           = 0;
    pdcp_pP->last_submitted_pdcp_rx_sn        = 4095;
    pdcp_pP->first_missing_pdu                = -1;
    pdcp_pP->rx_hfn_offset                    = 0;
1669

1670
    LOG_I(PDCP, PROTOCOL_PDCP_CTXT_FMT" Action ADD  LCID %d (%s id %d) "
1671
            "configured with SN size %d bits and RLC %s\n",
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          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
          lc_idP,
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	  (srb_flagP == SRB_FLAG_YES) ? "SRB" : "DRB",
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          rb_idP,
          pdcp_pP->seq_num_size,
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	  (rlc_modeP == RLC_MODE_AM ) ? "AM" : (rlc_modeP == RLC_MODE_TM) ? "TM" : "UM");
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    /* Setup security */
    if (security_modeP != 0xff) {
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      pdcp_config_set_security(
        ctxt_pP,
        pdcp_pP,
        rb_idP,
        lc_idP,
        security_modeP,
        kRRCenc_pP,
        kRRCint_pP,
        kUPenc_pP);
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    }
    break;
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1692
  case CONFIG_ACTION_MODIFY:
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    DevAssert(pdcp_pP != NULL);
    pdcp_pP->header_compression_profile=header_compression_profileP;
    pdcp_pP->status_report = rb_reportP;
    pdcp_pP->rlc_mode = rlc_modeP;
1697

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    /* Setup security */
    if (security_modeP != 0xff) {
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      pdcp_config_set_security(
        ctxt_pP,
        pdcp_pP,
        rb_idP,
        lc_idP,
        security_modeP,
        kRRCenc_pP,
        kRRCint_pP,
        kUPenc_pP);
1709
    }
1710

1711
    if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
1712
      pdcp_pP->seq_num_size = 7;
1713
    } else if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits) {
1714
      pdcp_pP->seq_num_size = 12;
1715
    } else {
1716
      pdcp_pP->seq_num_size=5;
1717
    }
1718

1719
    LOG_I(PDCP,PROTOCOL_PDCP_CTXT_FMT" Action MODIFY LCID %d "
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1720
            "RB id %d reconfigured with SN size %d and RLC %s \n",
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          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
          lc_idP,
          rb_idP,
          rb_snP,
1725
            (rlc_modeP == RLC_MODE_AM) ? "AM" : (rlc_modeP == RLC_MODE_TM) ? "TM" : "UM");
1726
    break;
1727

1728
  case CONFIG_ACTION_REMOVE:
1729
    DevAssert(pdcp_pP != NULL);
1730
//#warning "TODO pdcp_module_id_to_rnti"
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    //pdcp_module_id_to_rnti[ctxt_pP.module_id ][dst_id] = NOT_A_RNTI;
    LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_REMOVE LCID %d RBID %d configured\n",
          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
          lc_idP,
          rb_idP);
1736

1737
   if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
1738
     // pdcp_remove_UE(ctxt_pP);
1739
   }
1740

1741 1742
    /* Security keys */
    if (pdcp_pP->kUPenc != NULL) {
1743
      free(pdcp_pP->kUPenc);
1744
    }
1745

1746
    if (pdcp_pP->kRRCint != NULL) {
1747
      free(pdcp_pP->kRRCint);
1748
    }
1749

1750
    if (pdcp_pP->kRRCenc != NULL) {
1751
      free(pdcp_pP->kRRCenc);
1752
    }
1753

1754
    memset(pdcp_pP, 0, sizeof(pdcp_t));
1755
    break;
1756
#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
1757

1758 1759
  case CONFIG_ACTION_MBMS_ADD:
  case CONFIG_ACTION_MBMS_MODIFY:
1760 1761
    LOG_D(PDCP," %s service_id/mch index %d, session_id/lcid %d, rbid %d configured\n",
          //PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
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          actionP == CONFIG_ACTION_MBMS_ADD ? "CONFIG_ACTION_MBMS_ADD" : "CONFIG_ACTION_MBMS_MODIFY",
          mch_idP,
          lc_idP,
          rb_idP);

    if (ctxt_pP->enb_flag == ENB_FLAG_YES) {
      pdcp_mbms_array_eNB[ctxt_pP->module_id][mch_idP][lc_idP].instanciated_instance = TRUE ;
      pdcp_mbms_array_eNB[ctxt_pP->module_id][mch_idP][lc_idP].rb_id = rb_idP;
1770
    } else {
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      pdcp_mbms_array_ue[ctxt_pP->module_id][mch_idP][lc_idP].instanciated_instance = TRUE ;
      pdcp_mbms_array_ue[ctxt_pP->module_id][mch_idP][lc_idP].rb_id = rb_idP;
1773
    }
1774

1775
    break;
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1776
#endif
1777

1778
  case CONFIG_ACTION_SET_SECURITY_MODE:
1779
    pdcp_config_set_security(
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      ctxt_pP,
      pdcp_pP,
      rb_idP,
      lc_idP,
      security_modeP,
      kRRCenc_pP,
      kRRCint_pP,
      kUPenc_pP);
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    break;
1789

1790
  default:
1791
    DevParam(actionP, ctxt_pP->module_id, ctxt_pP->rnti);
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    break;
1793
  }
1794

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  return 0;
}
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//-----------------------------------------------------------------------------
void
pdcp_config_set_security(
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  const protocol_ctxt_t* const  ctxt_pP,
  pdcp_t         * const pdcp_pP,
  const rb_id_t         rb_idP,
  const uint16_t        lc_idP,
  const uint8_t         security_modeP,
  uint8_t        * const kRRCenc,
  uint8_t        * const kRRCint,
  uint8_t        * const  kUPenc)
1809
//-----------------------------------------------------------------------------
1810
{
1811
  DevAssert(pdcp_pP != NULL);
1812

1813
  if ((security_modeP >= 0) && (security_modeP <= 0x77)) {
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    pdcp_pP->cipheringAlgorithm     = security_modeP & 0x0f;
    pdcp_pP->integrityProtAlgorithm = (security_modeP>>4) & 0xf;
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1817 1818
    LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_SET_SECURITY_MODE: cipheringAlgorithm %d integrityProtAlgorithm %d\n",
          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
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            pdcp_pP->cipheringAlgorithm,
            pdcp_pP->integrityProtAlgorithm);

    pdcp_pP->kRRCenc = kRRCenc;
    pdcp_pP->kRRCint = kRRCint;
    pdcp_pP->kUPenc  = kUPenc;
1825

1826 1827
    /* Activate security */
    pdcp_pP->security_activated = 1;
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1828 1829
	MSC_LOG_EVENT(
	  (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE,
1830
	  "0 Set security ciph %X integ %x UE %"PRIx16" ",
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1831 1832 1833
	  pdcp_pP->cipheringAlgorithm,
	  pdcp_pP->integrityProtAlgorithm,
	  ctxt_pP->rnti);
1834
  } else {
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1835 1836
	  MSC_LOG_EVENT(
	    (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE,
1837
	    "0 Set security failed UE %"PRIx16" ",
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1838 1839
	    ctxt_pP->rnti);
	  LOG_E(PDCP,PROTOCOL_PDCP_CTXT_FMT"  bad security mode %d",
1840 1841
          PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_pP),
          security_modeP);
1842
  }
1843 1844
}

1845
//-----------------------------------------------------------------------------
1846 1847
void
rrc_pdcp_config_req (
1848 1849 1850 1851 1852
  const protocol_ctxt_t* const  ctxt_pP,
  const srb_flag_t srb_flagP,
  const uint32_t actionP,
  const rb_id_t rb_idP,
  const uint8_t security_modeP)
1853
//-----------------------------------------------------------------------------
1854
{
1855
  pdcp_t *pdcp_p = NULL;
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  hash_key_t       key           = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_pP->rnti, ctxt_pP->enb_flag, rb_idP, srb_flagP);
  hashtable_rc_t   h_rc;
  h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p);
1859

1860
  if (h_rc == HASH_TABLE_OK) {
1861 1862

  /*
1863 1864 1865
   * Initialize sequence number state variables of relevant PDCP entity
   */
  switch (actionP) {
1866
  case CONFIG_ACTION_ADD:
1867 1868
    pdcp_p->is_srb = srb_flagP;
    pdcp_p->rb_id  = rb_idP;
1869

1870
    if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
1871
      pdcp_p->is_ue = TRUE;
1872
      pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id] = ctxt_pP->rnti;
1873
    } else {
1874
      pdcp_p->is_ue = FALSE;
1875
    }
1876 1877 1878 1879 1880 1881 1882 1883 1884

    pdcp_p->next_pdcp_tx_sn = 0;
    pdcp_p->next_pdcp_rx_sn = 0;
    pdcp_p->tx_hfn = 0;
    pdcp_p->rx_hfn = 0;
    /* SN of the last PDCP SDU delivered to upper layers */
    pdcp_p->last_submitted_pdcp_rx_sn = 4095;

    if (rb_idP < DTCH) { // SRB
1885
      pdcp_p->seq_num_size = 5;
1886
    } else { // DRB
1887
      pdcp_p->seq_num_size = 12;
1888
    }
1889

1890
    pdcp_p->first_missing_pdu = -1;
1891 1892 1893
    LOG_D(PDCP,PROTOCOL_PDCP_CTXT_FMT" Config request : Action ADD:  radio bearer id %d (already added) configured\n",
	  PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
	  rb_idP);
1894
    break;
1895

1896
  case CONFIG_ACTION_MODIFY:
1897
    break;
1898

1899
  case CONFIG_ACTION_REMOVE:
1900 1901 1902
      LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_REMOVE: radio bearer id %d configured\n",
            PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
            rb_idP);
1903 1904 1905 1906 1907 1908 1909 1910
    pdcp_p->next_pdcp_tx_sn = 0;
    pdcp_p->next_pdcp_rx_sn = 0;
    pdcp_p->tx_hfn = 0;
    pdcp_p->rx_hfn = 0;
    pdcp_p->last_submitted_pdcp_rx_sn = 4095;
    pdcp_p->seq_num_size = 0;
    pdcp_p->first_missing_pdu = -1;
    pdcp_p->security_activated = 0;
1911
      h_rc = hashtable_remove(pdcp_coll_p, key);
1912 1913

    break;
1914

1915
  case CONFIG_ACTION_SET_SECURITY_MODE:
1916
    if ((security_modeP >= 0) && (security_modeP <= 0x77)) {
1917 1918
      pdcp_p->cipheringAlgorithm= security_modeP & 0x0f;
      pdcp_p->integrityProtAlgorithm = (security_modeP>>4) & 0xf;
1919 1920
        LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_SET_SECURITY_MODE: cipheringAlgorithm %d integrityProtAlgorithm %d\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
1921 1922
            pdcp_p->cipheringAlgorithm,
            pdcp_p->integrityProtAlgorithm );
1923
    } else {
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1924
        LOG_W(PDCP,PROTOCOL_PDCP_CTXT_FMT" bad security mode %d", PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p), security_modeP);
1925
    }
1926

1927
    break;
1928

1929
  default:
1930
      DevParam(actionP, ctxt_pP->module_id, ctxt_pP->rnti);
1931
    break;
1932
  }
1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949
  } else {
    switch (actionP) {
    case CONFIG_ACTION_ADD:
      pdcp_p = calloc(1, sizeof(pdcp_t));
      h_rc = hashtable_insert(pdcp_coll_p, key, pdcp_p);

      if (h_rc != HASH_TABLE_OK) {
        LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" PDCP ADD FAILED\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p));
        free(pdcp_p);

      } else {
        pdcp_p->is_srb = srb_flagP;
        pdcp_p->rb_id  = rb_idP;

        if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
          pdcp_p->is_ue = TRUE;
1950
	  pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id] = ctxt_pP->rnti;
1951 1952
        } else {
          pdcp_p->is_ue = FALSE;
1953
	}
1954

1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
        pdcp_p->next_pdcp_tx_sn = 0;
        pdcp_p->next_pdcp_rx_sn = 0;
        pdcp_p->tx_hfn = 0;
        pdcp_p->rx_hfn = 0;
        /* SN of the last PDCP SDU delivered to upper layers */
        pdcp_p->last_submitted_pdcp_rx_sn = 4095;

        if (rb_idP < DTCH) { // SRB
          pdcp_p->seq_num_size = 5;

        } else { // DRB
          pdcp_p->seq_num_size = 12;
        }

        pdcp_p->first_missing_pdu = -1;
        LOG_D(PDCP,PROTOCOL_PDCP_CTXT_FMT" Inserting PDCP instance in collection key 0x%"PRIx64"\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p), key);
        LOG_D(PDCP,PROTOCOL_PDCP_CTXT_FMT" Config request : Action ADD:  radio bearer id %d configured\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
              rb_idP);
      }

      break;

    case CONFIG_ACTION_REMOVE:
      LOG_D(PDCP, PROTOCOL_CTXT_FMT" CONFIG_REQ PDCP CONFIG_ACTION_REMOVE PDCP instance not found\n",
            PROTOCOL_CTXT_ARGS(ctxt_pP));
      break;

    default:
      LOG_E(PDCP, PROTOCOL_CTXT_FMT" CONFIG_REQ PDCP NOT FOUND\n",
            PROTOCOL_CTXT_ARGS(ctxt_pP));
    }
  }
}


//-----------------------------------------------------------------------------
1993
 
1994 1995 1996 1997 1998
int
pdcp_module_init (
  void
)
//-----------------------------------------------------------------------------
1999
{
2000
 
2001
#ifdef PDCP_USE_RT_FIFO
2002 2003
  int ret;

2004
  ret=rtf_create(PDCP2NW_DRIVER_FIFO,32768);
2005 2006

  if (ret < 0) {
2007
    LOG_E(PDCP, "Cannot create PDCP2NW_DRIVER_FIFO fifo %d (ERROR %d)\n", PDCP2NW_DRIVER_FIFO, ret);
2008
    return -1;
2009
  } else {
2010 2011
    LOG_D(PDCP, "Created PDCP2NAS fifo %d\n", PDCP2NW_DRIVER_FIFO);
    rtf_reset(PDCP2NW_DRIVER_FIFO);
2012 2013
  }

2014
  ret=rtf_create(NW_DRIVER2PDCP_FIFO,32768);
2015 2016

  if (ret < 0) {
2017
    LOG_E(PDCP, "Cannot create NW_DRIVER2PDCP_FIFO fifo %d (ERROR %d)\n", NW_DRIVER2PDCP_FIFO, ret);
2018

2019
    return -1;
2020
  } else {
2021 2022
    LOG_D(PDCP, "Created NW_DRIVER2PDCP_FIFO fifo %d\n", NW_DRIVER2PDCP_FIFO);
    rtf_reset(NW_DRIVER2PDCP_FIFO);
2023 2024 2025 2026 2027 2028 2029 2030
  }

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

  return 0;
2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
}

//-----------------------------------------------------------------------------
void
pdcp_free (
  void* pdcp_pP
)
//-----------------------------------------------------------------------------
{
  pdcp_t* pdcp_p = (pdcp_t*)pdcp_pP;
2041

2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057
  if (pdcp_p != NULL) {
    if (pdcp_p->kUPenc != NULL) {
      free(pdcp_p->kUPenc);
    }

    if (pdcp_p->kRRCint != NULL) {
      free(pdcp_p->kRRCint);
    }

    if (pdcp_p->kRRCenc != NULL) {
      free(pdcp_p->kRRCenc);
    }

    memset(pdcp_pP, 0, sizeof(pdcp_t));
    free(pdcp_pP);
  }
2058 2059 2060
}

//-----------------------------------------------------------------------------
2061 2062
void pdcp_module_cleanup (void)
//-----------------------------------------------------------------------------
2063
{
2064 2065 2066
#ifdef PDCP_USE_RT_FIFO
  rtf_destroy(NW_DRIVER2PDCP_FIFO);
  rtf_destroy(PDCP2NW_DRIVER_FIFO);
2067 2068 2069 2070
#endif
}

//-----------------------------------------------------------------------------
2071
void pdcp_layer_init(void)
2072
//-----------------------------------------------------------------------------
2073
{
2074

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2075
  module_id_t       instance;
2076
  int i,j;
2077
#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
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2078 2079 2080
  mbms_session_id_t session_id;
  mbms_service_id_t service_id;
#endif
2081
  /*
2082 2083
   * Initialize SDU list
   */
2084
  list_init(&pdcp_sdu_list, NULL);
2085 2086
  pdcp_coll_p = hashtable_create ((maxDRB + 2) * 16, NULL, pdcp_free);
  AssertFatal(pdcp_coll_p != NULL, "UNRECOVERABLE error, PDCP hashtable_create failed");
2087

2088
  for (instance = 0; instance < MAX_MOBILES_PER_ENB; instance++) {
2089
#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
2090 2091 2092 2093

    for (service_id = 0; service_id < maxServiceCount; service_id++) {
      for (session_id = 0; session_id < maxSessionPerPMCH; session_id++) {
        memset(&pdcp_mbms_array_ue[instance][service_id][session_id], 0, sizeof(pdcp_mbms_t));
2094
      }
2095
    }
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2096
#endif
2097
    pdcp_eNB_UE_instance_to_rnti[instance] = NOT_A_RNTI;
2098
  }
2099
  pdcp_eNB_UE_instance_to_rnti_index = 0; 
2100

2101
    
2102
  for (instance = 0; instance < NUMBER_OF_eNB_MAX; instance++) {
2103
#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
2104 2105 2106 2107

    for (service_id = 0; service_id < maxServiceCount; service_id++) {
      for (session_id = 0; session_id < maxSessionPerPMCH; session_id++) {
        memset(&pdcp_mbms_array_eNB[instance][service_id][session_id], 0, sizeof(pdcp_mbms_t));
2108
      }
2109 2110
    }

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2111
#endif
2112
  }
2113

2114 2115 2116 2117 2118 2119
#ifdef MBMS_MULTICAST_OUT
  mbms_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
  if (mbms_socket == -1)
    LOG_W(PDCP, "Could not create RAW socket, MBMS packets will not be put to the network\n");
#endif

2120
  LOG_I(PDCP, "PDCP layer has been initialized\n");
2121

2122 2123 2124
  pdcp_output_sdu_bytes_to_write=0;
  pdcp_output_header_bytes_to_write=0;
  pdcp_input_sdu_remaining_size_to_read=0;
2125

2126 2127
  memset(pdcp_enb, 0, sizeof(pdcp_enb_t));

2128
  
2129 2130 2131
  memset(Pdcp_stats_tx_window_ms, 0, sizeof(Pdcp_stats_tx_window_ms));
  memset(Pdcp_stats_rx_window_ms, 0, sizeof(Pdcp_stats_rx_window_ms));
  for (i =0; i< MAX_NUM_CCs ; i ++){
2132
    for (j=0; j< MAX_MOBILES_PER_ENB;j++){
2133 2134 2135 2136 2137
      Pdcp_stats_tx_window_ms[i][j]=100;
      Pdcp_stats_rx_window_ms[i][j]=100;
    }
  }
  
2138
  memset(Pdcp_stats_tx, 0, sizeof(Pdcp_stats_tx));
2139 2140
  memset(Pdcp_stats_tx_w, 0, sizeof(Pdcp_stats_tx_w));
  memset(Pdcp_stats_tx_tmp_w, 0, sizeof(Pdcp_stats_tx_tmp_w));
2141
  memset(Pdcp_stats_tx_bytes, 0, sizeof(Pdcp_stats_tx_bytes));
2142 2143
  memset(Pdcp_stats_tx_bytes_w, 0, sizeof(Pdcp_stats_tx_bytes_w));
  memset(Pdcp_stats_tx_bytes_tmp_w, 0, sizeof(Pdcp_stats_tx_bytes_tmp_w));
2144
  memset(Pdcp_stats_tx_sn, 0, sizeof(Pdcp_stats_tx_sn));
2145
  memset(Pdcp_stats_tx_throughput_w, 0, sizeof(Pdcp_stats_tx_throughput_w));
2146 2147 2148
  memset(Pdcp_stats_tx_aiat, 0, sizeof(Pdcp_stats_tx_aiat));
  memset(Pdcp_stats_tx_iat, 0, sizeof(Pdcp_stats_tx_iat));
  
2149 2150

  memset(Pdcp_stats_rx, 0, sizeof(Pdcp_stats_rx));
2151 2152
  memset(Pdcp_stats_rx_w, 0, sizeof(Pdcp_stats_rx_w));
  memset(Pdcp_stats_rx_tmp_w, 0, sizeof(Pdcp_stats_rx_tmp_w));
2153
  memset(Pdcp_stats_rx_bytes, 0, sizeof(Pdcp_stats_rx_bytes));
2154 2155
  memset(Pdcp_stats_rx_bytes_w, 0, sizeof(Pdcp_stats_rx_bytes_w));
  memset(Pdcp_stats_rx_bytes_tmp_w, 0, sizeof(Pdcp_stats_rx_bytes_tmp_w));
2156
  memset(Pdcp_stats_rx_sn, 0, sizeof(Pdcp_stats_rx_sn));
2157
  memset(Pdcp_stats_rx_goodput_w, 0, sizeof(Pdcp_stats_rx_goodput_w));
2158 2159 2160 2161
  memset(Pdcp_stats_rx_aiat, 0, sizeof(Pdcp_stats_rx_aiat));
  memset(Pdcp_stats_rx_iat, 0, sizeof(Pdcp_stats_rx_iat));
  memset(Pdcp_stats_rx_outoforder, 0, sizeof(Pdcp_stats_rx_outoforder));
    
2162 2163 2164
}

//-----------------------------------------------------------------------------
2165 2166
void pdcp_layer_cleanup (void)
//-----------------------------------------------------------------------------
2167 2168
{
  list_free (&pdcp_sdu_list);
2169
  hashtable_destroy(pdcp_coll_p);
2170 2171 2172 2173 2174 2175
#ifdef MBMS_MULTICAST_OUT
  if(mbms_socket != -1) {
    close(mbms_socket);
    mbms_socket = -1;
  }
#endif
2176 2177
}

2178
#ifdef PDCP_USE_RT_FIFO
2179
EXPORT_SYMBOL(pdcp_2_nas_irq);
2180
#endif //PDCP_USE_RT_FIFO