pdcp.c 59.4 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
/*******************************************************************************

  Eurecom OpenAirInterface
  Copyright(c) 1999 - 2011 Eurecom

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

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

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

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

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

gauthier's avatar
gauthier committed
28
 *******************************************************************************/
29 30 31 32 33 34 35 36 37 38 39 40

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

#define PDCP_C
#ifndef USER_MODE
#include <rtai_fifos.h>
#endif
41
#include "assertions.h"
42 43 44 45 46 47 48 49 50 51 52 53 54 55
#include "pdcp.h"
#include "pdcp_util.h"
#include "pdcp_sequence_manager.h"
#include "LAYER2/RLC/rlc.h"
#include "LAYER2/MAC/extern.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "pdcp_primitives.h"
#include "OCG.h"
#include "OCG_extern.h"
#include "UTIL/LOG/log.h"
#include <inttypes.h>
#include "platform_constants.h"
#include "UTIL/LOG/vcd_signal_dumper.h"

56 57 58 59
#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif

60 61 62 63
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
#ifndef OAI_EMU
extern int otg_enabled;
#endif

//extern char *packet_gen(int src, int dst, int ctime, int *pkt_size);
extern int otg_rx_pkt( int src, int dst, int ctime, char *buffer_tx, unsigned int size);

//-----------------------------------------------------------------------------
/*
 * If PDCP_UNIT_TEST is set here then data flow between PDCP and RLC is broken
 * and PDCP has no longer anything to do with RLC. In this case, after it's handed
 * an SDU it appends PDCP header and returns (by filling in incoming pointer parameters)
 * this mem_block_t to be dissected for testing purposes. For further details see test
 * code at targets/TEST/PDCP/test_pdcp.c:test_pdcp_data_req()
 */
79
boolean_t pdcp_data_req(
80 81 82 83 84 85 86 87 88 89 90
        const module_id_t    enb_mod_idP,
        const module_id_t    ue_mod_idP,
        const frame_t        frameP,
        const eNB_flag_t     enb_flagP,
        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,
        const pdcp_transmission_mode_t modeP)
91 92
{
  //-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
93
  pdcp_t            *pdcp_p          = NULL;
94 95 96 97 98
  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;
gauthier's avatar
gauthier committed
99 100
  mem_block_t       *pdcp_pdu_p      = NULL;
  rlc_op_status_t    rlc_status;
101
  boolean_t          ret             = TRUE;
gauthier's avatar
gauthier committed
102 103 104

  AssertError (enb_mod_idP < NUMBER_OF_eNB_MAX, return FALSE, "eNB id is too high (%u/%d) %u %u!\n", enb_mod_idP, NUMBER_OF_eNB_MAX, ue_mod_idP, rb_idP);
  AssertError (ue_mod_idP < NUMBER_OF_UE_MAX, return FALSE, "UE id is too high (%u/%d) %u %u!\n", ue_mod_idP, NUMBER_OF_UE_MAX, enb_mod_idP, rb_idP);
105 106 107
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
      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, ue_mod_idP, enb_mod_idP);
  } else {
108 109 110 111 112
      if (srb_flagP) {
          AssertError (rb_idP < 2, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, 2, ue_mod_idP, enb_mod_idP);
      } else {
          AssertError (rb_idP < maxDRB, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, maxDRB, ue_mod_idP, enb_mod_idP);
      }
113
  }
gauthier's avatar
gauthier committed
114

115
  if (enb_flagP == ENB_FLAG_NO) {
116 117 118 119 120
      if (srb_flagP) {
          pdcp_p = &pdcp_array_srb_ue[ue_mod_idP][rb_idP-1];
  } else {
          pdcp_p = &pdcp_array_drb_ue[ue_mod_idP][rb_idP-1];
      }
121
  } else {
122 123 124 125 126
      if (srb_flagP) {
          pdcp_p = &pdcp_array_srb_eNB[enb_mod_idP][ue_mod_idP][rb_idP-1];
      } else {
          pdcp_p = &pdcp_array_drb_eNB[enb_mod_idP][ue_mod_idP][rb_idP-1];
      }
127
  }
128

129 130
  if ((pdcp_p->instanciated_instance == FALSE) && (modeP != PDCP_TRANSMISSION_MODE_TRANSPARENT)) {
      if (enb_flagP == ENB_FLAG_NO) {
gauthier's avatar
gauthier committed
131 132 133 134 135 136 137
          LOG_W(PDCP, "[UE %d] Instance is not configured for eNB %d, rb_id %d Ignoring SDU...\n",
              ue_mod_idP, enb_mod_idP, rb_idP);
      } else {
          LOG_W(PDCP, "[eNB %d] Instance is not configured for UE %d, rb_id %d Ignoring SDU...\n",
              enb_mod_idP, ue_mod_idP, rb_idP);
      }
      return FALSE;
138
  }
gauthier's avatar
gauthier committed
139 140 141
  if (sdu_buffer_sizeP == 0) {
      LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
      return FALSE;
142 143 144 145 146
  }
  /*
   * XXX MAX_IP_PACKET_SIZE is 4096, shouldn't this be MAX SDU size, which is 8188 bytes?
   */

gauthier's avatar
gauthier committed
147 148 149 150 151
  if (sdu_buffer_sizeP > MAX_IP_PACKET_SIZE) {
      LOG_E(PDCP, "Requested SDU size (%d) is bigger than that can be handled by PDCP (%u)!\n",
          sdu_buffer_sizeP, MAX_IP_PACKET_SIZE);
      // XXX What does following call do?
      mac_xface->macphy_exit("PDCP sdu buffer size > MAX_IP_PACKET_SIZE");
152
  }
153

154
  if (enb_flagP == ENB_FLAG_NO)
155
    start_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
156
  else
157
    start_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
158 159

  // PDCP transparent mode for MBMS traffic
160

161
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
gauthier's avatar
gauthier committed
162 163 164 165
      LOG_D(PDCP, " [TM] Asking for a new mem_block of size %d\n",sdu_buffer_sizeP);
      pdcp_pdu_p = get_free_mem_block(sdu_buffer_sizeP);
      if (pdcp_pdu_p != NULL) {
          memcpy(&pdcp_pdu_p->data[0], sdu_buffer_pP, sdu_buffer_sizeP);
166 167 168 169
          rlc_util_print_hex_octets(PDCP,
                                    (unsigned char*)&pdcp_pdu_p->data[0],
                                    sdu_buffer_sizeP);

170
          rlc_status = rlc_data_req(enb_mod_idP, ue_mod_idP, frameP, enb_flagP, srb_flagP, MBMS_FLAG_YES, rb_idP, muiP, confirmP, sdu_buffer_sizeP, pdcp_pdu_p);
gauthier's avatar
gauthier committed
171 172
      } else {
        rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
173 174 175 176 177 178
	LOG_W(PDCP,"[FRAME %5u][%s][PDCP][MOD %u/%u][RB %u] PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
	      frameP,
	      (enb_flagP) ? "eNB" : "UE",
	      enb_mod_idP,
	      ue_mod_idP,
	      rb_idP);
gauthier's avatar
gauthier committed
179 180 181 182 183 184 185 186 187
#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",
            frameP,
            (enb_flagP) ? "eNB" : "UE",
            enb_mod_idP,
            ue_mod_idP,
            rb_idP);
#endif
      }
188
  } else {
gauthier's avatar
gauthier committed
189
      // calculate the pdcp header and trailer size
190
      if (srb_flagP) {
gauthier's avatar
gauthier committed
191 192
          pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
          pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
193
      } else {
gauthier's avatar
gauthier committed
194 195
          pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
          pdcp_tailer_len = 0;
196
      }
gauthier's avatar
gauthier committed
197 198 199 200 201 202 203 204 205 206 207
      pdcp_pdu_size = sdu_buffer_sizeP + pdcp_header_len + pdcp_tailer_len;

      LOG_I(PDCP, "Data request notification for PDCP entity %s enb id %u ue_id %u and radio bearer ID %d pdu size %d (header%d, trailer%d)\n",
          (enb_flagP) ? "eNB" : "UE",
              enb_mod_idP,
              ue_mod_idP,
              rb_idP,
              pdcp_pdu_size,
              pdcp_header_len,
              pdcp_tailer_len);

208
      /*
gauthier's avatar
gauthier committed
209
       * Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
210
       */
gauthier's avatar
gauthier committed
211 212 213 214 215 216 217 218 219 220
      LOG_D(PDCP, "Asking for a new mem_block of size %d\n", pdcp_pdu_size);
      pdcp_pdu_p = get_free_mem_block(pdcp_pdu_size);

      if (pdcp_pdu_p != NULL) {
          /*
           * Create a Data PDU with header and append data
           *
           * Place User Plane PDCP Data PDU header first
           */

221
          if (srb_flagP) { // this Control plane PDCP Data PDU
gauthier's avatar
gauthier committed
222 223 224 225
              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);
226
              memset(&pdcp_pdu_p->data[sdu_buffer_sizeP + pdcp_header_len],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
gauthier's avatar
gauthier committed
227 228
              if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
                  LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
gauthier's avatar
gauthier committed
229 230 231 232 233
                  if (enb_flagP == ENB_FLAG_NO)
                    stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
                  else
                    stop_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
                  return FALSE;
gauthier's avatar
gauthier committed
234 235 236
              }
          } else {
              pdcp_user_plane_data_pdu_header_with_long_sn pdu_header;
237
              pdu_header.dc = (modeP == PDCP_TRANSMISSION_MODE_DATA) ? PDCP_DATA_PDU_BIT_SET :  PDCP_CONTROL_PDU_BIT_SET;
gauthier's avatar
gauthier committed
238 239 240 241
              pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp_p);
              current_sn = pdu_header.sn ;
              if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
                  LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
gauthier's avatar
gauthier committed
242 243 244 245 246
                  if (enb_flagP == ENB_FLAG_NO)
                    stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
                  else
                    stop_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
                  return FALSE;
gauthier's avatar
gauthier committed
247 248 249 250 251 252 253 254 255 256
              }
          }
          /*
           * Validate incoming sequence number, there might be a problem with PDCP initialization
           */
          if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp_p->seq_num_size)) {
              LOG_E(PDCP, "Generated sequence number (%lu) is greater than a sequence number could ever be!\n", current_sn);
              LOG_E(PDCP, "There must be a problem with PDCP initialization, ignoring this PDU...\n");

              free_mem_block(pdcp_pdu_p);
gauthier's avatar
gauthier committed
257 258 259 260
              if (enb_flagP == ENB_FLAG_NO)
                stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
              else
                stop_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
gauthier's avatar
gauthier committed
261 262
              return FALSE;
          }
263

gauthier's avatar
gauthier committed
264
          LOG_D(PDCP, "Sequence number %d is assigned to current PDU\n", current_sn);
265

gauthier's avatar
gauthier committed
266 267
          /* Then append data... */
          memcpy(&pdcp_pdu_p->data[pdcp_header_len], sdu_buffer_pP, sdu_buffer_sizeP);
268

gauthier's avatar
gauthier committed
269 270 271 272 273
          //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
          for (i=0;i<pdcp_tailer_len;i++)
            pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP + i] = 0x00;// pdu_header.mac_i[i];
274 275

#if defined(ENABLE_SECURITY)
276
          if ((pdcp_p->security_activated != 0) &&
277
              (((pdcp_p->cipheringAlgorithm) != 0) ||
gauthier's avatar
gauthier committed
278 279 280 281 282 283
              ((pdcp_p->integrityProtAlgorithm) != 0))) {

              if (enb_flagP == ENB_FLAG_NO)
                start_meas(&eNB_pdcp_stats[enb_mod_idP].apply_security);
              else
                start_meas(&UE_pdcp_stats[ue_mod_idP].apply_security);
284

gauthier's avatar
gauthier committed
285
              pdcp_apply_security(pdcp_p,
286 287 288 289 290 291
				  srb_flagP,
				  rb_idP % maxDRB,
				  pdcp_header_len,
				  current_sn,
				  pdcp_pdu_p->data,
				  sdu_buffer_sizeP);
292

gauthier's avatar
gauthier committed
293 294 295 296 297 298 299 300 301 302
              if (enb_flagP == ENB_FLAG_NO)
                stop_meas(&eNB_pdcp_stats[enb_mod_idP].apply_security);
              else
                stop_meas(&UE_pdcp_stats[ue_mod_idP].apply_security);
          }
          LOG_D(PDCP,"MAC_I is %02x.%02x.%02x.%02x\n",
              pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP ],
              pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP +1],
              pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP +2],
              pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP +3]);
303 304
#endif

gauthier's avatar
gauthier committed
305 306 307 308 309 310 311
          /* 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");
312 313 314 315
          if (enb_flagP == ENB_FLAG_NO)
              stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
          else
              stop_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
gauthier's avatar
gauthier committed
316 317 318 319 320 321 322 323 324 325 326 327 328 329
#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",
            frameP,
            (enb_flagP) ? "eNB" : "UE",
            enb_mod_idP,
            ue_mod_idP,
            rb_idP);
#endif
          return FALSE;
      }
      /*
       * Ask sublayer to transmit data and check return value
       * to see if RLC succeeded
       */
330
      rlc_status = rlc_data_req(enb_mod_idP, ue_mod_idP, frameP, enb_flagP, srb_flagP, MBMS_FLAG_NO, rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
331 332 333 334
  }
  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
335
    ret=TRUE;
336 337 338 339
    break;

  case RLC_OP_STATUS_BAD_PARAMETER:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
340 341
    ret= FALSE;
    break;
342 343
  case RLC_OP_STATUS_INTERNAL_ERROR:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
344 345
    ret= FALSE;
    break;
346 347 348

  case RLC_OP_STATUS_OUT_OF_RESSOURCES:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
349 350
    ret= FALSE;
    break;
351 352 353

  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);
354 355
    ret= FALSE;
    break;
356
  }
357
  if (enb_flagP == ENB_FLAG_NO)
358
    stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_req);
359
  else
360
    stop_meas(&UE_pdcp_stats[ue_mod_idP].data_req);
361 362 363 364
  /*
   * Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
   * so we return TRUE afterwards
   */
365
  /*
366
   if (rb_id>=DTCH) {
367
    if (enb_flagP == 1) {
368 369 370 371 372 373 374
      Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
      Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
    } else {
      Pdcp_stats_tx[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH]++;
      Pdcp_stats_tx_bytes[module_id][(rb_id & RAB_OFFSET2 )>> RAB_SHIFT2][(rb_id & RAB_OFFSET)-DTCH] += sdu_buffer_size;
    }
    }*/
375
  return ret;
376 377 378

}

gauthier's avatar
gauthier committed
379

380 381 382 383 384 385 386 387 388 389
boolean_t pdcp_data_ind(
        const module_id_t enb_mod_idP,
        const module_id_t ue_mod_idP,
        const frame_t frameP,
        const eNB_flag_t enb_flagP,
        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,
        mem_block_t* const sdu_buffer_pP)
390 391
{
  //-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
392 393 394
  pdcp_t      *pdcp_p          = NULL;
  list_t      *sdu_list_p      = NULL;
  mem_block_t *new_sdu_p       = NULL;
395 396
  uint8_t      pdcp_header_len = 0;
  uint8_t      pdcp_tailer_len = 0;
gauthier's avatar
gauthier committed
397
  pdcp_sn_t    sequence_number = 0;
398 399
  uint8_t      payload_offset  = 0;
  rb_id_t      rb_id           = rb_idP;
gauthier's avatar
gauthier committed
400

401 402
  if (enb_flagP)
    start_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
403
  else
404 405
    start_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);

406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
#ifdef OAI_EMU
  if (enb_flagP) {
      AssertFatal ((enb_mod_idP >= oai_emulation.info.first_enb_local) && (oai_emulation.info.nb_enb_local > 0),
          "eNB module id is too low (%u/%d)!\n",
          enb_mod_idP,
          oai_emulation.info.first_enb_local);
      AssertFatal ((enb_mod_idP < (oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local)) && (oai_emulation.info.nb_enb_local > 0),
          "eNB module id is too high (%u/%d)!\n",
          enb_mod_idP,
          oai_emulation.info.first_enb_local + oai_emulation.info.nb_enb_local);
      AssertFatal (ue_mod_idP  < NB_UE_INST,
          "UE module id is too high (%u/%d)!\n",
          ue_mod_idP,
          oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local);
  } else {
      AssertFatal (ue_mod_idP  < (oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local),
          "UE module id is too high (%u/%d)!\n",
          ue_mod_idP,
          oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local);
      AssertFatal (ue_mod_idP  >= oai_emulation.info.first_ue_local,
          "UE module id is too low (%u/%d)!\n",
          ue_mod_idP,
          oai_emulation.info.first_ue_local);
  }
#endif
431 432 433 434 435 436 437 438 439 440 441
  if (MBMS_flagP) {
      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, ue_mod_idP, enb_mod_idP);
      if (enb_flagP == ENB_FLAG_NO) {
          LOG_I(PDCP, "e-MBMS Data indication notification for PDCP entity from eNB %u to UE %u "
                "and radio bearer ID %d rlc sdu size %d enb_flagP %d\n",
                enb_mod_idP, ue_mod_idP, rb_idP, sdu_buffer_sizeP, enb_flagP);
      } else {
          LOG_I(PDCP, "Data indication notification for PDCP entity from UE %u to eNB %u "
          "and radio bearer ID %d rlc sdu size %d enb_flagP %d eNB_id %d\n",
          ue_mod_idP, enb_mod_idP , rb_idP, sdu_buffer_sizeP, enb_flagP, enb_mod_idP);
      }
442
  } else {
443 444
      rb_id = rb_idP % maxDRB;
      AssertError (rb_id < maxDRB, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_id, maxDRB, ue_mod_idP, enb_mod_idP);
445
      AssertError (rb_id > 0, return FALSE, "RB id is too low (%u/%d) %u %u!\n", rb_id, maxDRB, ue_mod_idP, enb_mod_idP);
446

447
      if (enb_flagP == ENB_FLAG_NO) {
448 449 450 451 452 453 454 455 456 457 458
          if (srb_flagP) {
              pdcp_p = &pdcp_array_srb_ue[ue_mod_idP][rb_id-1];
              LOG_I(PDCP, "Data indication notification for PDCP entity from eNB %u to UE %u "
                    "and signalling radio bearer ID %d rlc sdu size %d enb_flagP %d\n",
                    enb_mod_idP, ue_mod_idP, rb_id, sdu_buffer_sizeP, enb_flagP);
          } else {
              pdcp_p = &pdcp_array_drb_ue[ue_mod_idP][rb_id-1];
              LOG_I(PDCP, "Data indication notification for PDCP entity from eNB %u to UE %u "
                    "and data radio bearer ID %d rlc sdu size %d enb_flagP %d\n",
                    enb_mod_idP, ue_mod_idP, rb_id, sdu_buffer_sizeP, enb_flagP);
          }
459

460
      } else {
461 462 463 464 465 466 467 468 469 470 471
          if (srb_flagP) {
              pdcp_p = &pdcp_array_srb_eNB[enb_mod_idP][ue_mod_idP][rb_id-1];
              LOG_I(PDCP, "Data indication notification for PDCP entity from UE %u to eNB %u "
                  "and signalling radio bearer ID %d rlc sdu size %d enb_flagP %d eNB_id %d\n",
                  ue_mod_idP, enb_mod_idP , rb_id, sdu_buffer_sizeP, enb_flagP, enb_mod_idP);
          } else {
              pdcp_p = &pdcp_array_drb_eNB[enb_mod_idP][ue_mod_idP][rb_id-1];
              LOG_I(PDCP, "Data indication notification for PDCP entity from UE %u to eNB %u "
                  "and data radio bearer ID %d rlc sdu size %d enb_flagP %d eNB_id %d\n",
                  ue_mod_idP, enb_mod_idP , rb_id, sdu_buffer_sizeP, enb_flagP, enb_mod_idP);
          }
472 473

      }
474
  }
475

gauthier's avatar
gauthier committed
476
  sdu_list_p = &pdcp_sdu_list;
477

478

gauthier's avatar
gauthier committed
479 480
  if (sdu_buffer_sizeP == 0) {
      LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
481 482
      if (enb_flagP)
	stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
483
      else
484
	stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
gauthier's avatar
gauthier committed
485
      return FALSE;
486 487 488
  }

  /*
gauthier's avatar
gauthier committed
489 490
   * Check if incoming SDU is long enough to carry a PDU header
   */
491
  if (MBMS_flagP == 0 ) {
492
      if (srb_flagP) {
gauthier's avatar
gauthier committed
493 494 495 496 497 498
          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;
      }
499

gauthier's avatar
gauthier committed
500 501 502
      if (sdu_buffer_sizeP < pdcp_header_len + pdcp_tailer_len ) {
          LOG_W(PDCP, "Incoming (from RLC) SDU is short of size (size:%d)! Ignoring...\n", sdu_buffer_sizeP);
          free_mem_block(sdu_buffer_pP);
gauthier's avatar
gauthier committed
503 504 505 506 507
          if (enb_flagP)
            stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
          else
            stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
          return FALSE;
gauthier's avatar
gauthier committed
508
      }
509

gauthier's avatar
gauthier committed
510
      /*
511 512 513
       * Parse the PDU placed at the beginning of SDU to check
       * if incoming SN is in line with RX window
       */
514 515 516 517 518 519 520 521 522 523 524 525 526 527
      if (MBMS_flagP == 0 ) {
	if (srb_flagP) { //SRB1/2
	  sequence_number =   pdcp_get_sequence_number_of_pdu_with_SRB_sn((unsigned char*)sdu_buffer_pP->data);
	} else { // DRB
	   if (pdcp_p->seq_num_size == PDCP_SN_7BIT){
	    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){
	    sequence_number =     pdcp_get_sequence_number_of_pdu_with_long_sn((unsigned char*)sdu_buffer_pP->data);
	  } else {
	    //sequence_number = 4095;
	    LOG_E(PDCP,"wrong sequence number  (%d) for this pdcp entity \n", pdcp_p->seq_num_size);
	  }
	  //uint8_t dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer_pP->data);
	}
gauthier's avatar
gauthier committed
528
      }
529
      if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp_p, srb_flagP) == TRUE) {
gauthier's avatar
gauthier committed
530 531
          LOG_D(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window\n", sequence_number);
          /* if (dc == PDCP_DATA_PDU )
532 533 534
	   LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
	   else
	   LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
gauthier's avatar
gauthier committed
535 536 537 538 539 540
      } else {
          LOG_W(PDCP, "Incoming PDU has an unexpected sequence number (%d), RX window snychronisation have probably been lost!\n", sequence_number);
          /*
           * XXX Till we implement in-sequence delivery and duplicate discarding
           * mechanism all out-of-order packets will be delivered to RRC/IP
           */
541
#if 0
gauthier's avatar
gauthier committed
542 543 544
          LOG_D(PDCP, "Ignoring PDU...\n");
          free_mem_block(sdu_buffer);
          return FALSE;
545
#else
gauthier's avatar
gauthier committed
546
          LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
547
#endif
548
      }
gauthier's avatar
gauthier committed
549
      // SRB1/2: control-plane data
550
      if (srb_flagP){
gauthier's avatar
gauthier committed
551
#if defined(ENABLE_SECURITY)
552 553 554 555 556 557
          if (pdcp_p->security_activated == 1) {
              if (enb_flagP == ENB_FLAG_NO)
                start_meas(&eNB_pdcp_stats[enb_mod_idP].validate_security);
              else
                start_meas(&UE_pdcp_stats[ue_mod_idP].validate_security);

558 559 560 561 562 563 564 565 566 567 568 569 570
	  pdcp_validate_security(pdcp_p, 
				 srb_flagP,
				 rb_idP, 
				 pdcp_header_len,
				 sequence_number, 
				 sdu_buffer_pP->data,
				 sdu_buffer_sizeP - pdcp_tailer_len);
	  if (enb_flagP == ENB_FLAG_NO)
	    stop_meas(&eNB_pdcp_stats[enb_mod_idP].validate_security);
	  else
	    stop_meas(&UE_pdcp_stats[ue_mod_idP].validate_security);

	  }
571
#endif
gauthier's avatar
gauthier committed
572 573 574 575 576
//rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
          pdcp_rrc_data_ind(enb_mod_idP,
              ue_mod_idP,
              frameP,
              enb_flagP,
577
              rb_id,
gauthier's avatar
gauthier committed
578
              sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len,
579
              (uint8_t*)&sdu_buffer_pP->data[pdcp_header_len]);
gauthier's avatar
gauthier committed
580 581
          free_mem_block(sdu_buffer_pP);
          // free_mem_block(new_sdu);
582
          if (enb_flagP)
gauthier's avatar
gauthier committed
583 584 585 586
            stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
          else
            stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
          return TRUE;
gauthier's avatar
gauthier committed
587 588
      }
      payload_offset=PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
589
#if defined(ENABLE_SECURITY)
590
      if (pdcp_p->security_activated == 1) {
591
          pdcp_validate_security(pdcp_p, rb_idP % maxDRB, pdcp_header_len,
592 593
              sequence_number, sdu_buffer_pP->data,
              sdu_buffer_sizeP - pdcp_tailer_len);
gauthier's avatar
gauthier committed
594
      }
595
#endif
596
  } else {
gauthier's avatar
gauthier committed
597
      payload_offset=0;
598 599
  }
#if defined(USER_MODE) && defined(OAI_EMU)
600
  if (oai_emulation.info.otg_enabled == 1) {
gauthier's avatar
gauthier committed
601 602
      module_id_t src_id, dst_id;
      int    ctime;
603 604 605 606 607
   
      if (pdcp_p->rlc_mode == RLC_MODE_AM ) {
	pdcp_p->last_submitted_pdcp_rx_sn = sequence_number; 
      }
   
608
      rlc_util_print_hex_octets(PDCP,
609
                                (unsigned char*)&sdu_buffer_pP->data[payload_offset],
610
                                sdu_buffer_sizeP - payload_offset);
gauthier's avatar
gauthier committed
611

612 613
      src_id = (enb_flagP == ENB_FLAG_NO) ?  enb_mod_idP : ue_mod_idP +   NB_eNB_INST;
      dst_id = (enb_flagP == ENB_FLAG_NO) ? ue_mod_idP +  NB_eNB_INST: enb_mod_idP;
gauthier's avatar
gauthier committed
614 615
      ctime = oai_emulation.info.time_ms; // avg current simulation time in ms : we may get the exact time through OCG?
      LOG_D(PDCP, "Check received buffer : enb_flag %d  rab id %d (src %d, dst %d)\n",
616
          enb_flagP, rb_id, src_id, dst_id);
gauthier's avatar
gauthier committed
617 618 619 620

      if (otg_rx_pkt(src_id, dst_id,ctime,&sdu_buffer_pP->data[payload_offset],
          sdu_buffer_sizeP - payload_offset ) == 0 ) {
          free_mem_block(sdu_buffer_pP);
621
           if (enb_flagP)
gauthier's avatar
gauthier committed
622 623 624 625
             stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
           else
             stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
           return TRUE;
gauthier's avatar
gauthier committed
626
      }
627 628 629
  }
#else
  if (otg_enabled==1) {
gauthier's avatar
gauthier committed
630 631
      LOG_D(OTG,"Discarding received packed\n");
      free_mem_block(sdu_buffer_pP);
632 633
      if (enb_flagP)
	stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
634
      else
635
	stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
gauthier's avatar
gauthier committed
636
      return TRUE;
637 638
  }
#endif
gauthier's avatar
gauthier committed
639
  new_sdu_p = get_free_mem_block(sdu_buffer_sizeP - payload_offset + sizeof (pdcp_data_ind_header_t));
640

gauthier's avatar
gauthier committed
641
  if (new_sdu_p) {
642 643 644
    if (pdcp_p->rlc_mode == RLC_MODE_AM ) {
      pdcp_p->last_submitted_pdcp_rx_sn = sequence_number; 
    }
gauthier's avatar
gauthier committed
645
      /*
646 647
       * Prepend PDCP indication header which is going to be removed at pdcp_fifo_flush_sdus()
       */
gauthier's avatar
gauthier committed
648 649 650 651 652
      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;

      // Here there is no virtualization possible
      // set ((pdcp_data_ind_header_t *) new_sdu_p->data)->inst for IP layer here
653
      if (enb_flagP == ENB_FLAG_NO) {
654
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->rb_id = rb_id;
gauthier's avatar
gauthier committed
655 656 657 658
#if defined(OAI_EMU)
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->inst  = ue_mod_idP + oai_emulation.info.nb_enb_local - oai_emulation.info.first_ue_local;
#endif
      } else {
659
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->rb_id = rb_id + (ue_mod_idP * maxDRB);
gauthier's avatar
gauthier committed
660 661
#if defined(OAI_EMU)
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->inst  = enb_mod_idP - oai_emulation.info.first_enb_local;
662
#endif
gauthier's avatar
gauthier committed
663 664
      }

665

gauthier's avatar
gauthier committed
666 667 668
      // XXX Decompression would be done at this point

      /*
669 670 671 672 673
       * 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)
       */
gauthier's avatar
gauthier committed
674 675 676 677 678 679 680 681 682 683 684 685 686
      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);

      /* 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 + 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);

      /*
687 688 689
       * Update PDCP statistics
       * XXX Following two actions are identical, is there a merge error?
       */
gauthier's avatar
gauthier committed
690 691 692 693

      /*if (enb_flagP == 1) {
      Pdcp_stats_rx[module_id][(rb_idP & RAB_OFFSET2) >> RAB_SHIFT2][(rb_idP & RAB_OFFSET) - DTCH]++;
      Pdcp_stats_rx_bytes[module_id][(rb_idP & RAB_OFFSET2) >> RAB_SHIFT2][(rb_idP & RAB_OFFSET) - DTCH] += sdu_buffer_sizeP;
694
    } else {
gauthier's avatar
gauthier committed
695 696 697 698 699 700 701 702 703 704 705
      Pdcp_stats_rx[module_id][(rb_idP & RAB_OFFSET2) >> RAB_SHIFT2][(rb_idP & RAB_OFFSET) - DTCH]++;
      Pdcp_stats_rx_bytes[module_id][(rb_idP & RAB_OFFSET2) >> RAB_SHIFT2][(rb_idP & RAB_OFFSET) - DTCH] += sdu_buffer_sizeP;
    }*/
  }
#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
  else {
      AssertFatal(0, "[FRAME %5u][%s][PDCP][MOD %u/%u][RB %u] PDCP_DATA_IND SDU DROPPED, OUT OF MEMORY \n",
            frameP,
            (enb_flagP) ? "eNB" : "UE",
            enb_mod_idP,
            ue_mod_idP,
706
            rb_id);
707
  }
gauthier's avatar
gauthier committed
708
#endif
709

gauthier's avatar
gauthier committed
710
  free_mem_block(sdu_buffer_pP);
711 712
  if (enb_flagP)
    stop_meas(&eNB_pdcp_stats[enb_mod_idP].data_ind);
713
  else
714
    stop_meas(&UE_pdcp_stats[ue_mod_idP].data_ind);
715 716 717 718
  return TRUE;
}

//-----------------------------------------------------------------------------
719 720 721 722 723
void pdcp_run (
        const frame_t frameP,
        const eNB_flag_t  enb_flagP,
        const module_id_t ue_mod_idP,
        const module_id_t enb_mod_idP) {
724
  //-----------------------------------------------------------------------------
725
#if defined(ENABLE_ITTI)
726 727 728 729
  MessageDef   *msg_p;
  const char   *msg_name;
  instance_t    instance;
  int           result;
730
#endif
731 732
  if (enb_flagP)
    start_meas(&eNB_pdcp_stats[enb_mod_idP].pdcp_run);
733
  else
734
    start_meas(&UE_pdcp_stats[ue_mod_idP].pdcp_run);
735

736
  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
737

738 739
#if defined(ENABLE_ITTI)
  do {
gauthier's avatar
gauthier committed
740
      // Checks if a message has been sent to PDCP sub-task
741
      itti_poll_msg (enb_flagP ? TASK_PDCP_ENB : TASK_PDCP_UE, &msg_p);
742

gauthier's avatar
gauthier committed
743 744 745
      if (msg_p != NULL) {
          msg_name = ITTI_MSG_NAME (msg_p);
          instance = ITTI_MSG_INSTANCE (msg_p);
746

gauthier's avatar
gauthier committed
747 748
          switch (ITTI_MSG_ID(msg_p)) {
          case RRC_DCCH_DATA_REQ:
749
            LOG_I(PDCP, "Received %s from %s: instance %d, frame %d, enb_flagP %d, rb_id %d, muiP %d, confirmP %d, mode %d\n",
750
                msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
751 752 753
                RRC_DCCH_DATA_REQ (msg_p).frame, RRC_DCCH_DATA_REQ (msg_p).enb_flag, 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);

754 755 756 757 758 759 760 761 762 763 764
            result = pdcp_data_req (RRC_DCCH_DATA_REQ (msg_p).eNB_index,
                RRC_DCCH_DATA_REQ (msg_p).ue_index,
                RRC_DCCH_DATA_REQ (msg_p).frame,
                RRC_DCCH_DATA_REQ (msg_p).enb_flag,
                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,
                RRC_DCCH_DATA_REQ (msg_p).mode);
gauthier's avatar
gauthier committed
765
            AssertFatal (result == TRUE, "PDCP data request failed!\n");
766

gauthier's avatar
gauthier committed
767 768 769 770
            // 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;
771

gauthier's avatar
gauthier committed
772 773 774 775
          default:
            LOG_E(PDCP, "Received unexpected message %s\n", msg_name);
            break;
          }
776

gauthier's avatar
gauthier committed
777 778 779
          result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
          AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
      }
780
  } while(msg_p != NULL);
781 782 783

# if 0
  {
gauthier's avatar
gauthier committed
784
      MessageDef *msg_resp_p;
785

gauthier's avatar
gauthier committed
786
      msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);
787

gauthier's avatar
gauthier committed
788
      itti_send_msg_to_task(TASK_RRC_ENB, 1, msg_resp_p);
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804
  }
  {
    MessageDef *msg_resp_p;

    msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);

    itti_send_msg_to_task(TASK_ENB_APP, 2, msg_resp_p);
  }
  {
    MessageDef *msg_resp_p;

    msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);

    itti_send_msg_to_task(TASK_MAC_ENB, 3, msg_resp_p);
  }
# endif
805 806
#endif

807 808
#if defined(USER_MODE) && defined(OAI_EMU)
  pdcp_t            *pdcp_p          = NULL;
809 810 811 812 813 814 815 816 817 818 819
  int               drb_id=0 ;
    // add other rb_ids
    for (drb_id=0; drb_id < DTCH; drb_id++) {
      if (enb_flagP == ENB_FLAG_NO) {
	pdcp_p = &pdcp_array_drb_ue[ue_mod_idP][drb_id];
      } else {
	pdcp_p = &pdcp_array_drb_eNB[enb_mod_idP][ue_mod_idP][drb_id];
      }
      if (pdcp_p->instanciated_instance  == TRUE )
	pdcp_fifo_read_input_sdus_from_otg(frameP, enb_flagP, ue_mod_idP, enb_mod_idP);
    }
gauthier's avatar
gauthier committed
820
#endif
821 822

  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
gauthier's avatar
gauthier committed
823
#if defined(LINK_PDCP_TO_GTPV1U)
gauthier's avatar
gauthier committed
824
  if (enb_flagP == ENB_FLAG_NO)
gauthier's avatar
gauthier committed
825
#endif
gauthier's avatar
gauthier committed
826
  {
gauthier's avatar
gauthier committed
827 828
      pdcp_fifo_read_input_sdus(frameP, enb_flagP, ue_mod_idP, enb_mod_idP);
  }
829
  // PDCP -> NAS/IP traffic: RX
830 831 832 833
  if (enb_flagP)
    start_meas(&eNB_pdcp_stats[enb_mod_idP].pdcp_ip);
  else
    start_meas(&UE_pdcp_stats[ue_mod_idP].pdcp_ip);
gauthier's avatar
gauthier committed
834

835
  pdcp_fifo_flush_sdus(frameP, enb_flagP, enb_mod_idP, ue_mod_idP);
836

837 838 839 840 841
  if (enb_flagP)
    stop_meas(&eNB_pdcp_stats[enb_mod_idP].pdcp_ip);
  else
    stop_meas(&UE_pdcp_stats[ue_mod_idP].pdcp_ip);

842
  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
843 844
  if (enb_flagP)
    stop_meas(&eNB_pdcp_stats[enb_mod_idP].pdcp_run);
845
  else
846 847
    stop_meas(&UE_pdcp_stats[ue_mod_idP].pdcp_run);

848 849
}

850 851 852 853 854 855 856 857 858 859 860 861
boolean_t rrc_pdcp_config_asn1_req (
        const module_id_t               enb_mod_idP,
        const module_id_t               ue_mod_idP,
        const frame_t              frameP,
        const eNB_flag_t           enb_flagP,
        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
862
#ifdef Rel10
863
,PMCH_InfoList_r9_t*  const pmch_InfoList_r9_pP
864
#endif
gauthier's avatar
gauthier committed
865
)
866
{
867
  long int        lc_id          = 0;
868
  DRB_Identity_t  srb_id         = 0;
869
  long int        mch_id         = 0;
gauthier's avatar
gauthier committed
870
  rlc_mode_t      rlc_type       = RLC_MODE_NONE;
871
  DRB_Identity_t  drb_id         = 0;
gauthier's avatar
gauthier committed
872
  DRB_Identity_t *pdrb_id_p      = NULL;
873
  uint8_t         drb_sn         = 12;
874 875
  uint8_t         srb_sn         = 5; // fixed sn for SRBs
  uint8_t         drb_report     = 0;
876
  long int        cnt            = 0;
877 878
  uint16_t        header_compression_profile = 0;
  config_action_t action                     = CONFIG_ACTION_ADD;
gauthier's avatar
gauthier committed
879 880 881
  SRB_ToAddMod_t *srb_toaddmod_p = NULL;
  DRB_ToAddMod_t *drb_toaddmod_p = NULL;
  pdcp_t         *pdcp_p         = NULL;
882 883 884

#ifdef Rel10
  int i,j;
gauthier's avatar
gauthier committed
885 886
  MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9_p = NULL;
  MBMS_SessionInfo_r9_t     *MBMS_SessionInfo_p        = NULL;
887 888
#endif

889
  if (enb_flagP == ENB_FLAG_NO) {
gauthier's avatar
gauthier committed
890
      LOG_D(PDCP, "[UE %u] CONFIG REQ ASN1 for eNB %u\n", ue_mod_idP, enb_mod_idP);
891
  } else {
gauthier's avatar
gauthier committed
892
      LOG_D(PDCP, "[eNB %u] CONFIG REQ ASN1 for UE %u\n", enb_mod_idP, ue_mod_idP);
893
  }
894 895
  // srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels

gauthier's avatar
gauthier committed
896 897 898 899 900
  if (srb2add_list_pP != NULL) {
      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;
901
          lc_id = srb_id + 2;
gauthier's avatar
gauthier committed
902

903
          if (enb_flagP == ENB_FLAG_NO) {
904
              pdcp_p = &pdcp_array_srb_ue[ue_mod_idP][srb_id-1];
gauthier's avatar
gauthier committed
905
          } else {
906
              pdcp_p = &pdcp_array_srb_eNB[enb_mod_idP][ue_mod_idP][srb_id-1];
gauthier's avatar
gauthier committed
907
          }
908

909

910 911
          if (pdcp_p->instanciated_instance == TRUE) {
              action = CONFIG_ACTION_MODIFY;
gauthier's avatar
gauthier committed
912
          } else {
913
              action = CONFIG_ACTION_ADD;
gauthier's avatar
gauthier committed
914
          }
915

gauthier's avatar
gauthier committed
916 917 918 919 920 921 922 923 924 925 926 927 928 929
          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;
                default:
                  pdcp_config_req_asn1 (pdcp_p,
                      enb_mod_idP,
                      ue_mod_idP,
                      frameP,
                      enb_flagP, // not really required
930
                      SRB_FLAG_YES,
gauthier's avatar
gauthier committed
931 932 933 934
                      rlc_type,
                      action,
                      lc_id,
                      mch_id,
935
                      srb_id,
gauthier's avatar
gauthier committed
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
                      srb_sn,
                      0, // drb_report
                      0, // header compression
                      security_modeP,
                      kRRCenc_pP,
                      kRRCint_pP,
                      kUPenc_pP);
                  break;
                }
                break;
                case SRB_ToAddMod__rlc_Config_PR_defaultValue:
                  // already the default values
                  break;
                default:
                  DevParam(srb_toaddmod_p->rlc_Config->present, ue_mod_idP, enb_mod_idP);
                  break;
              }
          }
954 955 956 957
      }
  }
  // reset the action

gauthier's avatar
gauthier committed
958 959
  if (drb2add_list_pP != NULL) {
      for (cnt=0;cnt<drb2add_list_pP->list.count;cnt++) {
960

gauthier's avatar
gauthier committed
961
          drb_toaddmod_p = drb2add_list_pP->list.array[cnt];
962

963
          drb_id = drb_toaddmod_p->drb_Identity;// + drb_id_offset;
964 965

          lc_id = drb_id + 2;
966

967

968
          DevCheck4(drb_id < maxDRB, drb_id, maxDRB, ue_mod_idP, enb_mod_idP);
969

970
          if (enb_flagP == ENB_FLAG_NO) {
971
              pdcp_p = &pdcp_array_drb_ue[ue_mod_idP][drb_id-1];
gauthier's avatar
gauthier committed
972
          } else {
973
              pdcp_p = &pdcp_array_drb_eNB[enb_mod_idP][ue_mod_idP][drb_id-1];
gauthier's avatar
gauthier committed
974
          }
975

976 977
          if (pdcp_p->instanciated_instance == TRUE)
            action = CONFIG_ACTION_MODIFY;
gauthier's avatar
gauthier committed
978
          else
979
            action = CONFIG_ACTION_ADD;
gauthier's avatar
gauthier committed
980 981 982 983 984 985 986

          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;
987 988
		  drb_sn = PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits; // default SN size 
                  rlc_type = RLC_MODE_AM;
gauthier's avatar
gauthier committed
989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
              }
              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
                if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0001)
                  header_compression_profile=0x0001;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0002)
                  header_compression_profile=0x0002;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0003)
                  header_compression_profile=0x0003;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0004)
                  header_compression_profile=0x0004;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0006)
                  header_compression_profile=0x0006;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0101)
                  header_compression_profile=0x0101;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0102)
                  header_compression_profile=0x0102;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0103)
                  header_compression_profile=0x0103;
                else if(drb_toaddmod_p->pdcp_Config->headerCompression.choice.rohc.profiles.profile0x0104)
                  header_compression_profile=0x0104;
                else {
                    header_compression_profile=0x0;
                    LOG_W(PDCP,"unknown header compresion profile\n");
                }
                // set the applicable profile
                break;
              default:
gauthier's avatar
gauthier committed
1026 1027
                LOG_W(PDCP,"[MOD_id %u/%u][RB %u] unknown drb_toaddmod->PDCP_Config->headerCompression->present \n",
                    enb_mod_idP, ue_mod_idP, drb_id);
gauthier's avatar
gauthier committed
1028 1029 1030 1031 1032 1033 1034
                break;
              }
              pdcp_config_req_asn1 (pdcp_p,
                  enb_mod_idP,
                  ue_mod_idP,
                  frameP,
                  enb_flagP, // not really required
1035
                  SRB_FLAG_NO,
gauthier's avatar
gauthier committed
1036 1037 1038 1039
                  rlc_type,
                  action,
                  lc_id,
                  mch_id,
1040
                  drb_id,
gauthier's avatar
gauthier committed
1041 1042 1043 1044 1045 1046 1047
                  drb_sn,
                  drb_report,
                  header_compression_profile,
                  security_modeP,
                  kRRCenc_pP,
                  kRRCint_pP,
                  kUPenc_pP);
1048 1049 1050 1051
          }
      }
  }

gauthier's avatar
gauthier committed
1052 1053 1054
  if (drb2release_list_pP != NULL) {
      for (cnt=0;cnt<drb2release_list_pP->list.count;cnt++) {
          pdrb_id_p = drb2release_list_pP->list.array[cnt];
1055 1056
          drb_id =  *pdrb_id_p;
          lc_id = drb_id + 2;
1057
          if (enb_flagP == ENB_FLAG_NO) {
1058
              pdcp_p = &pdcp_array_drb_ue[ue_mod_idP][drb_id-1];
gauthier's avatar
gauthier committed
1059
          } else {
1060
              pdcp_p = &pdcp_array_drb_eNB[enb_mod_idP][ue_mod_idP][drb_id-1];
gauthier's avatar
gauthier committed
1061
          }
1062
          action = CONFIG_ACTION_REMOVE;
gauthier's avatar
gauthier committed
1063 1064 1065 1066 1067
          pdcp_config_req_asn1 (pdcp_p,
              enb_mod_idP,
              ue_mod_idP,
              frameP,
              enb_flagP, // not really required
1068
              SRB_FLAG_NO,
gauthier's avatar
gauthier committed
1069 1070 1071 1072
              rlc_type,
              action,
              lc_id,
              mch_id,
1073
              drb_id,
gauthier's avatar
gauthier committed
1074 1075 1076 1077 1078 1079 1080
              0,
              0,
              0,
              security_modeP,
              kRRCenc_pP,
              kRRCint_pP,
              kUPenc_pP);
1081
      }
1082 1083 1084
  }

#ifdef Rel10
1085 1086 1087 1088 1089 1090 1091
  if (pmch_InfoList_r9_pP != NULL) {
      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];
              lc_id = MBMS_SessionInfo_p->sessionId_r9->buf[0];
              mch_id = MBMS_SessionInfo_p->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string
gauthier's avatar
gauthier committed
1092 1093

              // can set the mch_id = i
1094
              if (enb_flagP) {
gauthier's avatar
gauthier committed
1095
                  drb_id =  (mch_id * maxSessionPerPMCH ) + lc_id ;//+ (maxDRB + 3)*MAX_MOBILES_PER_ENB; // 1
1096 1097 1098 1099 1100
                  if (pdcp_mbms_array_eNB[enb_mod_idP][mch_id][lc_id].instanciated_instance == TRUE) {
                      action = CONFIG_ACTION_MBMS_MODIFY;
                  }else {
                      action = CONFIG_ACTION_MBMS_ADD;
                  }
1101
              } else {
gauthier's avatar
gauthier committed
1102
                  drb_id =  (mch_id * maxSessionPerPMCH ) + lc_id; // + (maxDRB + 3); // 15
1103 1104 1105 1106 1107
                  if (pdcp_mbms_array_ue[ue_mod_idP][mch_id][lc_id].instanciated_instance == TRUE) {
                      action = CONFIG_ACTION_MBMS_MODIFY;
                  } else {
                      action = CONFIG_ACTION_MBMS_ADD;
                  }
1108 1109
              }

1110 1111
              pdcp_config_req_asn1 (
                  NULL,  // unused for MBMS
gauthier's avatar
gauthier committed
1112 1113 1114
                  enb_mod_idP,
                  ue_mod_idP,
                  frameP,
1115
                  enb_flagP,
1116
                  SRB_FLAG_NO,
gauthier's avatar
gauthier committed
1117
                  RLC_MODE_NONE,
gauthier's avatar
gauthier committed
1118 1119 1120
                  action,
                  lc_id,
                  mch_id,
1121
                  drb_id,
gauthier's avatar
gauthier committed
1122 1123 1124 1125 1126 1127 1128
                  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
gauthier's avatar
gauthier committed
1129
          }
1130 1131 1132 1133 1134 1135 1136 1137
      }
  }
#endif

  return 1;

}

gauthier's avatar
gauthier committed
1138
boolean_t pdcp_config_req_asn1 (pdcp_t   *pdcp_pP,
gauthier's avatar
gauthier committed
1139 1140
    module_id_t     enb_mod_idP,
    module_id_t     ue_mod_idP,
gauthier's avatar
gauthier committed
1141 1142
    frame_t         frameP,
    eNB_flag_t      enb_flagP,
1143
    srb_flag_t      srb_flagP,
gauthier's avatar
gauthier committed
1144
    rlc_mode_t      rlc_modeP,
1145 1146 1147
    config_action_t actionP,
    uint16_t        lc_idP,
    uint16_t        mch_idP,
gauthier's avatar
gauthier committed
1148
    rb_id_t         rb_idP,
1149 1150 1151 1152 1153 1154 1155
    uint8_t         rb_snP,
    uint8_t         rb_reportP,
    uint16_t        header_compression_profileP,
    uint8_t         security_modeP,
    uint8_t         *kRRCenc_pP,
    uint8_t         *kRRCint_pP,
    uint8_t         *kUPenc_pP)
1156
{
1157

gauthier's avatar
gauthier committed
1158
  switch (actionP) {
1159
  case CONFIG_ACTION_ADD:
gauthier's avatar
gauthier committed
1160
    DevAssert(pdcp_pP != NULL);
1161 1162
    pdcp_pP->instanciated_instance      = TRUE;
    pdcp_pP->is_ue                      = (enb_flagP == ENB_FLAG_NO) ? TRUE : FALSE;
1163
    pdcp_pP->is_srb                     = (srb_flagP == SRB_FLAG_YES) ? TRUE : FALSE;
gauthier's avatar
gauthier committed
1164
    pdcp_pP->lcid                       = lc_idP;
1165
    pdcp_pP->rb_id                      = rb_idP;
gauthier's avatar
gauthier committed
1166
    pdcp_pP->header_compression_profile = header_compression_profileP;
gauthier's avatar
gauthier committed
1167
    pdcp_pP->status_report              = rb_reportP;
gauthier's avatar
gauthier committed
1168

1169 1170 1171 1172
    if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits) {
        pdcp_pP->seq_num_size = PDCP_SN_12BIT;
    } else if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
        pdcp_pP->seq_num_size = PDCP_SN_7BIT;
gauthier's avatar
gauthier committed
1173
    } else {
1174
        pdcp_pP->seq_num_size = PDCP_SN_5BIT;
gauthier's avatar
gauthier committed
1175
    }
1176

gauthier's avatar
gauthier committed
1177

1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
    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;
    
1188
    if (enb_flagP == ENB_FLAG_NO) {
1189
        LOG_I(PDCP, "[UE %d] Config request : Action ADD for eNB %d: Frame %d LCID %d (rb id %d) "
gauthier's avatar
gauthier committed
1190 1191
            "configured with SN size %d bits and RLC %s\n",
            ue_mod_idP, enb_mod_idP, frameP, lc_idP, rb_idP, pdcp_pP->seq_num_size,
1192
            (rlc_modeP == RLC_MODE_AM ) ? "AM" : (rlc_modeP == RLC_MODE_TM) ? "TM" : "UM");
gauthier's avatar
gauthier committed
1193
    } else {
1194
        LOG_I(PDCP, "[eNB %d] Config request : Action ADD for UE %d: Frame %d LCID %d (rb id %d) "
gauthier's avatar
gauthier committed
1195 1196
            "configured with SN size %d bits and RLC %s\n",
            enb_mod_idP, ue_mod_idP, frameP, lc_idP, rb_idP, p