pdcp.c 62.6 KB
Newer Older
1
/*******************************************************************************
gauthier's avatar
gauthier committed
2 3
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom
4

gauthier's avatar
gauthier committed
5 6 7 8
    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
9 10


gauthier's avatar
gauthier committed
11 12 13 14
    OpenAirInterface is distributed in the hope that 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.
15

gauthier's avatar
gauthier committed
16 17 18 19
    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
   see <http://www.gnu.org/licenses/>.
20 21

  Contact Information
gauthier's avatar
gauthier committed
22 23
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
24
  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
gauthier's avatar
gauthier committed
25

ghaddab's avatar
ghaddab committed
26
  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
27

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
#include "hashtable.h"
43 44 45 46 47 48 49 50 51
#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"
52
#include "otg_rx.h"
53 54 55 56
#include "UTIL/LOG/log.h"
#include <inttypes.h>
#include "platform_constants.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
gauthier's avatar
gauthier committed
57
#include "msc.h"
58

59 60 61 62
#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif

63 64 65 66
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

67
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
68
#  include "gtpv1u_eNB_task.h"
69
#  include "gtpv1u.h"
70 71
#endif

72 73 74 75 76 77 78 79 80 81 82 83 84
#ifndef OAI_EMU
extern int otg_enabled;
#endif


//-----------------------------------------------------------------------------
/*
 * 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()
 */
85
boolean_t pdcp_data_req(
86 87 88 89 90 91 92
  const protocol_ctxt_t* const  ctxt_pP,
  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,
93 94 95
  const pdcp_transmission_mode_t modeP
)
//-----------------------------------------------------------------------------
96
{
97

gauthier's avatar
gauthier committed
98
  pdcp_t            *pdcp_p          = NULL;
99 100 101 102 103
  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
104 105
  mem_block_t       *pdcp_pdu_p      = NULL;
  rlc_op_status_t    rlc_status;
106
  boolean_t          ret             = TRUE;
gauthier's avatar
gauthier committed
107

108

109 110
  hash_key_t         key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t     h_rc;
gauthier's avatar
gauthier committed
111
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_IN);
112
  CHECK_CTXT_ARGS(ctxt_pP);
113

114
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
115
    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);
116
  } else {
117
    if (srb_flagP) {
118
      AssertError (rb_idP < 2, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, 2, ctxt_pP->module_id, ctxt_pP->rnti);
119
    } else {
120
      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);
121
    }
122
  }
gauthier's avatar
gauthier committed
123

124 125
  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);
126

127 128 129 130 131
  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",
            PROTOCOL_CTXT_ARGS(ctxt_pP),
            rb_idP);
132
    return FALSE;
133
  }
134
  }
135

gauthier's avatar
gauthier committed
136
  if (sdu_buffer_sizeP == 0) {
137 138
    LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
    return FALSE;
139
  }
140

141 142 143 144
  /*
   * XXX MAX_IP_PACKET_SIZE is 4096, shouldn't this be MAX SDU size, which is 8188 bytes?
   */

gauthier's avatar
gauthier committed
145
  if (sdu_buffer_sizeP > MAX_IP_PACKET_SIZE) {
146
    LOG_E(PDCP, "Requested SDU size (%d) is bigger than that can be handled by PDCP (%u)!\n",
gauthier's avatar
gauthier committed
147
          sdu_buffer_sizeP, MAX_IP_PACKET_SIZE);
148 149
    // XXX What does following call do?
    mac_xface->macphy_exit("PDCP sdu buffer size > MAX_IP_PACKET_SIZE");
150
  }
151

152 153 154 155 156
  if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].data_req);
  } else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].data_req);
  }
157 158


159
  // PDCP transparent mode for MBMS traffic
160

161
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
162 163 164 165 166
    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);
167
#if defined(DEBUG_PDCP_PAYLOAD)
168 169 170
      rlc_util_print_hex_octets(PDCP,
                                (unsigned char*)&pdcp_pdu_p->data[0],
                                sdu_buffer_sizeP);
171
#endif
172 173 174
      rlc_status = rlc_data_req(ctxt_pP, srb_flagP, MBMS_FLAG_YES, rb_idP, muiP, confirmP, sdu_buffer_sizeP, pdcp_pdu_p);
    } else {
      rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
175 176
      LOG_W(PDCP,PROTOCOL_CTXT_FMT" PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
            PROTOCOL_CTXT_ARGS(ctxt_pP));
177
#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
178 179
      AssertFatal(0, PROTOCOL_CTXT_FMT"[RB %u] PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
                  PROTOCOL_CTXT_ARGS(ctxt_pP),
180
                  rb_idP);
gauthier's avatar
gauthier committed
181
#endif
182
    }
183
  } else {
184 185 186 187 188 189 190 191 192 193
    // 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;
gauthier's avatar
gauthier committed
194

195 196
    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),
197 198 199
          pdcp_pdu_size,
          pdcp_header_len,
          pdcp_tailer_len);
gauthier's avatar
gauthier committed
200

201 202 203 204 205 206
    /*
     * Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
     */
    pdcp_pdu_p = get_free_mem_block(pdcp_pdu_size);

    if (pdcp_pdu_p != NULL) {
207
      /*
208 209 210
       * Create a Data PDU with header and append data
       *
       * Place User Plane PDCP Data PDU header first
211
       */
212

213 214 215 216 217 218
      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);
219

220
        if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
221 222
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
223

224 225 226 227 228
          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);
          }
229

gauthier's avatar
gauthier committed
230
          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
231 232 233 234 235 236 237
          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 ;
238

239
        if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
240 241
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
242

243 244 245 246 247
          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);
          }
248

gauthier's avatar
gauthier committed
249
          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
250 251
          return FALSE;
        }
gauthier's avatar
gauthier committed
252
      }
253

gauthier's avatar
gauthier committed
254
      /*
255
       * Validate incoming sequence number, there might be a problem with PDCP initialization
gauthier's avatar
gauthier committed
256
       */
257
      if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp_p->seq_num_size)) {
258 259 260 261
        LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Generated sequence number (%lu) is greater than a sequence number could ever be!\n"\
              "There must be a problem with PDCP initialization, ignoring this PDU...\n",
              PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p),
              current_sn);
262 263 264

        free_mem_block(pdcp_pdu_p);

265 266 267 268 269
        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);
        }
270

gauthier's avatar
gauthier committed
271
        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
272 273 274 275 276 277 278 279 280 281 282
        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
283
      for (i=0; i<pdcp_tailer_len; i++) {
284
        pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP + i] = 0x00;// pdu_header.mac_i[i];
285
      }
286 287 288 289 290 291 292

#if defined(ENABLE_SECURITY)

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

293 294 295 296 297
        if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
          start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].apply_security);
        } else {
          start_meas(&UE_pdcp_stats[ctxt_pP->module_id].apply_security);
        }
298 299 300 301 302 303 304 305 306 307

        pdcp_apply_security(ctxt_pP,
                            pdcp_p,
                            srb_flagP,
                            rb_idP % maxDRB,
                            pdcp_header_len,
                            current_sn,
                            pdcp_pdu_p->data,
                            sdu_buffer_sizeP);

308 309 310 311 312
        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);
        }
313 314 315 316 317 318 319 320 321 322 323 324
      }

#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");

325 326 327 328 329
      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);
      }
330 331 332 333 334 335 336 337 338

#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
gauthier's avatar
gauthier committed
339
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
340 341 342 343 344 345 346
      return FALSE;
    }

    /*
     * Ask sublayer to transmit data and check return value
     * to see if RLC succeeded
     */
347
#ifdef PDCP_MSG_PRINT
348 349 350
    int i=0;
    LOG_F(PDCP,"[MSG] PDCP DL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);

351
    for (i = 0; i < pdcp_pdu_size; i++) {
352
      LOG_F(PDCP,"%02x ", ((uint8_t*)pdcp_pdu_p->data)[i]);
353
    }
354 355 356 357

    LOG_F(PDCP,"\n");
#endif
    rlc_status = rlc_data_req(ctxt_pP, srb_flagP, MBMS_FLAG_NO, rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
358

359
  }
360

361 362 363
  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
364
    ret=TRUE;
365 366 367 368
    break;

  case RLC_OP_STATUS_BAD_PARAMETER:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
369 370
    ret= FALSE;
    break;
371

372 373
  case RLC_OP_STATUS_INTERNAL_ERROR:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
374 375
    ret= FALSE;
    break;
376 377 378

  case RLC_OP_STATUS_OUT_OF_RESSOURCES:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
379 380
    ret= FALSE;
    break;
381 382 383

  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);
384 385
    ret= FALSE;
    break;
386
  }
387

388 389 390 391 392
  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);
  }
393

394 395 396 397
  /*
   * Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
   * so we return TRUE afterwards
   */
398
  /*
399
   if (rb_id>=DTCH) {
400
    if (ctxt_pP->enb_flag == 1) {
401 402 403 404 405 406 407
      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;
    }
    }*/
gauthier's avatar
gauthier committed
408
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
409
  return ret;
410 411 412

}

gauthier's avatar
gauthier committed
413

414 415 416
//-----------------------------------------------------------------------------
boolean_t
pdcp_data_ind(
417 418 419 420 421
  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,
422 423 424
  mem_block_t* const sdu_buffer_pP
)
//-----------------------------------------------------------------------------
425
{
gauthier's avatar
gauthier committed
426 427 428
  pdcp_t      *pdcp_p          = NULL;
  list_t      *sdu_list_p      = NULL;
  mem_block_t *new_sdu_p       = NULL;
429 430
  uint8_t      pdcp_header_len = 0;
  uint8_t      pdcp_tailer_len = 0;
gauthier's avatar
gauthier committed
431
  pdcp_sn_t    sequence_number = 0;
432
  volatile sdu_size_t   payload_offset  = 0;
433
  rb_id_t      rb_id            = rb_idP;
434
  boolean_t    packet_forwarded = FALSE;
435 436 437
  hash_key_t      key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
438
  MessageDef  *message_p        = NULL;
439
  uint8_t     *gtpu_buffer_p    = NULL;
440
#endif
441

442

gauthier's avatar
gauthier committed
443
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_IN);
444

445 446
#ifdef OAI_EMU

447
  CHECK_CTXT_ARGS(ctxt_pP);
448

449
#endif
450
#ifdef PDCP_MSG_PRINT
451 452 453
  int i=0;
  LOG_F(PDCP,"[MSG] PDCP UL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);

454
  for (i = 0; i < sdu_buffer_sizeP; i++) {
455
    LOG_F(PDCP,"%02x ", ((uint8_t*)sdu_buffer_pP->data)[i]);
456
  }
457 458 459

  LOG_F(PDCP,"\n");
#endif
460

461
  if (MBMS_flagP) {
462 463 464 465 466 467
    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);
468 469

    if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
470
      LOG_D(PDCP, "e-MBMS Data indication notification for PDCP entity from eNB %u to UE %x "
471
            "and radio bearer ID %d rlc sdu size %d ctxt_pP->enb_flag %d\n",
472 473 474 475 476
            ctxt_pP->module_id,
            ctxt_pP->rnti,
            rb_idP,
            sdu_buffer_sizeP,
            ctxt_pP->enb_flag);
477

gauthier's avatar
sync  
gauthier committed
478
    } else {
479 480 481 482 483 484 485
      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);
gauthier's avatar
sync  
gauthier committed
486
    }
487

gauthier's avatar
sync  
gauthier committed
488
  } else {
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
    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);
      free_mem_block(sdu_buffer_pP);
gauthier's avatar
gauthier committed
509
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
510
      return FALSE;
511
    }
512
  }
513

gauthier's avatar
gauthier committed
514
  sdu_list_p = &pdcp_sdu_list;
515

gauthier's avatar
gauthier committed
516
  if (sdu_buffer_sizeP == 0) {
517 518
    LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
    return FALSE;
519
  }
520

521 522 523 524 525
  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);
  }
526 527

  /*
528 529
   * Parse the PDU placed at the beginning of SDU to check
   * if incoming SN is in line with RX window
gauthier's avatar
gauthier committed
530
   */
531

532
  if (MBMS_flagP == 0 ) {
533 534 535 536 537 538
    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;
539 540 541 542 543 544 545

      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);
gauthier's avatar
gauthier committed
546
      } else {
547
        //sequence_number = 4095;
548 549 550 551
        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);
gauthier's avatar
gauthier committed
552
      }
553

554 555
      //uint8_t dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer_pP->data);
    }
556

557 558 559 560
    /*
     * Check if incoming SDU is long enough to carry a PDU header
     */
    if (sdu_buffer_sizeP < pdcp_header_len + pdcp_tailer_len ) {
561 562 563 564
      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);
565 566
      free_mem_block(sdu_buffer_pP);

567 568 569 570 571
      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);
      }
572

gauthier's avatar
gauthier committed
573
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
574 575 576
      return FALSE;
    }

577
    if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp_p, srb_flagP) == TRUE) {
578
#if 0
579
      LOG_T(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window\n", sequence_number);
580
#endif
581
      /* if (dc == PDCP_DATA_PDU )
582 583 584
      LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
      else
      LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
585
    } else {
586 587 588 589
      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);
gauthier's avatar
gauthier committed
590
      /*
591 592
       * XXX Till we implement in-sequence delivery and duplicate discarding
       * mechanism all out-of-order packets will be delivered to RRC/IP
593 594
       */
#if 0
595 596 597
      LOG_D(PDCP, "Ignoring PDU...\n");
      free_mem_block(sdu_buffer);
      return FALSE;
598
#else
599
      //LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
600
#endif
601
    }
602 603 604

    // SRB1/2: control-plane data
    if (srb_flagP) {
605
#if defined(ENABLE_SECURITY)
606

607
      if (pdcp_p->security_activated == 1) {
608 609 610 611 612
        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);
        }
613 614 615 616 617 618 619 620 621 622

        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);

623 624 625 626 627
        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);
        }
gauthier's avatar
gauthier committed
628
      }
629

630 631
#endif
      //rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
632 633 634 635 636 637 638
  	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);
639
      pdcp_rrc_data_ind(ctxt_pP,
640 641 642
                        rb_id,
                        sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len,
                        (uint8_t*)&sdu_buffer_pP->data[pdcp_header_len]);
643
      free_mem_block(sdu_buffer_pP);
644

645
      // free_mem_block(new_sdu);
646 647 648 649 650
      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);
      }
651

gauthier's avatar
gauthier committed
652
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
653 654
      return TRUE;
    }
655 656 657 658

    /*
     * DRBs
     */
659 660
    payload_offset=pdcp_header_len;// PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
#if defined(ENABLE_SECURITY)
661

662
    if (pdcp_p->security_activated == 1) {
663 664 665 666 667
      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);
      }
668

669
      pdcp_validate_security(
670 671 672 673 674 675 676 677 678
        ctxt_pP,
        pdcp_p,
        srb_flagP,
        rb_idP,
        pdcp_header_len,
        sequence_number,
        sdu_buffer_pP->data,
        sdu_buffer_sizeP - pdcp_tailer_len);

679 680 681 682 683
      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);
      }
684

685
    }
686

687
#endif
688
  } else {
689
    payload_offset=0;
690
  }
691

692
#if defined(USER_MODE) && defined(OAI_EMU)
693

694
  if (oai_emulation.info.otg_enabled == 1) {
695
    unsigned int dst_instance;
696 697
    int    ctime;

698
    if ((pdcp_p->rlc_mode == RLC_MODE_AM)&&(MBMS_flagP==0) ) {
699 700 701
      pdcp_p->last_submitted_pdcp_rx_sn = sequence_number;
    }

702
#if defined(DEBUG_PDCP_PAYLOAD)
703 704 705
    rlc_util_print_hex_octets(PDCP,
                              (unsigned char*)&sdu_buffer_pP->data[payload_offset],
                              sdu_buffer_sizeP - payload_offset);
706
#endif
gauthier's avatar
gauthier committed
707

708
    ctime = oai_emulation.info.time_ms; // avg current simulation time in ms : we may get the exact time through OCG?
709 710 711 712 713 714
    if (MBMS_flagP == 0){
      LOG_D(PDCP,
	    PROTOCOL_PDCP_CTXT_FMT"Check received buffer :  (dst %d)\n",
	    PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p),
	    ctxt_pP->instance);
    }
715 716 717 718
    if (otg_rx_pkt(
          ctxt_pP->instance,
          ctime,
          (const char*)(&sdu_buffer_pP->data[payload_offset]),
719
                   sdu_buffer_sizeP - payload_offset ) == 0 ) {
gauthier's avatar
gauthier committed
720
      free_mem_block(sdu_buffer_pP);
721

722 723 724 725 726
      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);
      }
727

gauthier's avatar
gauthier committed
728
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
gauthier's avatar
gauthier committed
729
      return TRUE;
730
    }
731
  }
732 733 734 735 736 737 738

#else

  if (otg_enabled==1) {
    LOG_D(OTG,"Discarding received packed\n");
    free_mem_block(sdu_buffer_pP);

739 740 741 742 743
    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);
    }
744

gauthier's avatar
gauthier committed
745
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
746 747 748
    return TRUE;
  }

749 750
#endif

gauthier's avatar
gauthier committed
751

752 753 754 755 756 757 758 759
  // 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)
   */
760
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
761

762
  if ((TRUE == ctxt_pP->enb_flag) && (FALSE == srb_flagP)) {
763 764 765 766 767 768 769 770
    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);
771 772 773 774 775 776 777 778 779 780
    //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;
781
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rnti         = ctxt_pP->rnti;
782 783 784
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rab_id       = rb_id + 4;
    itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
    packet_forwarded = TRUE;
785
  }
786

787 788 789
#else
  packet_forwarded = FALSE;
#endif
790

791
  if (FALSE == packet_forwarded) {
792
    new_sdu_p = get_free_mem_block(sdu_buffer_sizeP - payload_offset + sizeof (pdcp_data_ind_header_t));
793

794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
    if (new_sdu_p) {
      if (pdcp_p->rlc_mode == RLC_MODE_AM ) {
        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;

      // 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;
gauthier's avatar
gauthier committed
809
#if defined(OAI_EMU)
810
        ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst  = ctxt_pP->module_id + oai_emulation.info.nb_enb_local - oai_emulation.info.first_ue_local;
gauthier's avatar
gauthier committed
811
#endif
812
      } else {
813
        ((pdcp_data_ind_header_t*) new_sdu_p->data)->rb_id = rb_id + (ctxt_pP->module_id * maxDRB);
gauthier's avatar
gauthier committed
814
#if defined(OAI_EMU)
815
        ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst  = ctxt_pP->module_id - oai_emulation.info.first_enb_local;
816
#endif
817
      }
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843

      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);

      /*
       * Update PDCP statistics
       * XXX Following two actions are identical, is there a merge error?
       */

      /*if (ctxt_pP->enb_flag == 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;
        } else {
          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;
        }*/
    }
gauthier's avatar
gauthier committed
844
  }
845

gauthier's avatar
gauthier committed
846
#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
847
  else {
848 849
    AssertFatal(0, PROTOCOL_PDCP_CTXT_FMT" PDCP_DATA_IND SDU DROPPED, OUT OF MEMORY \n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p));
850 851
  }

gauthier's avatar
gauthier committed
852
#endif
853

gauthier's avatar
gauthier committed
854
  free_mem_block(sdu_buffer_pP);
855

856 857 858 859 860
  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);
  }
861

gauthier's avatar
gauthier committed
862
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
863 864 865 866
  return TRUE;
}

//-----------------------------------------------------------------------------
867 868 869 870 871
void
pdcp_run (
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
872
{
873
#if defined(ENABLE_ITTI)
874 875 876 877
  MessageDef   *msg_p;
  const char   *msg_name;
  instance_t    instance;
  int           result;
878
  protocol_ctxt_t  ctxt;
879
#endif
880

881 882 883 884 885
  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);
  }
886

gauthier's avatar
gauthier committed
887
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
888

889 890
#if defined(ENABLE_ITTI)

891 892 893 894 895 896 897 898 899 900
  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) {
      msg_name = ITTI_MSG_NAME (msg_p);
      instance = ITTI_MSG_INSTANCE (msg_p);

      switch (ITTI_MSG_ID(msg_p)) {
      case RRC_DCCH_DATA_REQ:
901
	PROTOCOL_CTXT_SET_BY_MODULE_ID(
902 903 904 905
          &ctxt,
          RRC_DCCH_DATA_REQ (msg_p).module_id,
          RRC_DCCH_DATA_REQ (msg_p).enb_flag,
          RRC_DCCH_DATA_REQ (msg_p).rnti,
906 907 908
          RRC_DCCH_DATA_REQ (msg_p).frame, 
	  0,
	  RRC_DCCH_DATA_REQ (msg_p).eNB_index);
909 910 911 912 913 914 915 916 917
        LOG_D(PDCP, PROTOCOL_CTXT_FMT"Received %s from %s: instance %d, rb_id %d, muiP %d, confirmP %d, mode %d\n",
              PROTOCOL_CTXT_ARGS(&ctxt),
              msg_name,
              ITTI_MSG_ORIGIN_NAME(msg_p),
              instance,
              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);
918 919 920 921 922 923 924 925 926

        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,
                                RRC_DCCH_DATA_REQ (msg_p).mode);
927 928
        if (result != TRUE)
          LOG_E(PDCP, "PDCP data request failed!\n");
929 930 931 932 933 934 935 936 937

        // 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;

      default:
        LOG_E(PDCP, "Received unexpected message %s\n", msg_name);
        break;
gauthier's avatar
gauthier committed
938
      }
939 940 941 942

      result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
      AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
    }
943
  } while(msg_p != NULL);
944 945 946

# if 0
  {
947
    MessageDef *msg_resp_p;
948

949
    msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);
950

951
    itti_send_msg_to_task(TASK_RRC_ENB, 1, msg_resp_p);
952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967
  }
  {
    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
968 969
#endif

970
#if defined(USER_MODE) && defined(OAI_EMU)
971
    pdcp_fifo_read_input_sdus_from_otg(ctxt_pP);
972

gauthier's avatar
gauthier committed
973
#endif
974 975

  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
976
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
977

978
  if (ctxt_pP->enb_flag == ENB_FLAG_NO)
gauthier's avatar
gauthier committed
979
#endif
gauthier's avatar
gauthier committed
980
  {
981
    pdcp_fifo_read_input_sdus(ctxt_pP);
gauthier's avatar
gauthier committed
982
  }
983

984
  // PDCP -> NAS/IP traffic: RX
985 986 987
  if (ctxt_pP->enb_flag) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
gauthier's avatar
gauthier committed
988

989 990 991
  else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
992

993
  pdcp_fifo_flush_sdus(ctxt_pP);
994

995 996 997 998 999
  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);
  }
1000

1001 1002 1003 1004 1005
  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);
  }
gauthier's avatar
gauthier committed
1006
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
1007 1008
}

1009

1010 1011 1012 1013 1014 1015 1016
//-----------------------------------------------------------------------------
boolean_t
pdcp_remove_UE(
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
{
1017 1018
  DRB_Identity_t  srb_id         = 0;
  DRB_Identity_t  drb_id         = 0;
1019 1020
  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
1021 1022 1023

  // check and remove SRBs first

1024
  for (srb_id=0; srb_id<2; srb_id++) {
1025 1026
    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);
1027 1028
  }

1029
  for (drb_id=0; drb_id<maxDRB; drb_id++) {
1030 1031
    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);
1032 1033 1034 1035 1036 1037 1038

  }

  return 1;
}


1039 1040 1041
//-----------------------------------------------------------------------------
boolean_t
rrc_pdcp_config_asn1_req (
1042 1043 1044 1045 1046 1047 1048 1049
  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
1050
#ifdef Rel10
1051
  ,PMCH_InfoList_r9_t*  const pmch_InfoList_r9_pP
1052
#endif
gauthier's avatar
gauthier committed
1053
)
1054
//-----------------------------------------------------------------------------
1055
{
1056
  long int        lc_id          = 0;
1057
  DRB_Identity_t  srb_id         = 0;
1058
  long int        mch_id         = 0;
gauthier's avatar
gauthier committed
1059
  rlc_mode_t      rlc_type       = RLC_MODE_NONE;
1060
  DRB_Identity_t  drb_id         = 0;
gauthier's avatar
gauthier committed
1061
  DRB_Identity_t *pdrb_id_p      = NULL;
1062
  uint8_t         drb_sn         = 12;
1063 1064
  uint8_t         srb_sn         = 5; // fixed sn for SRBs
  uint8_t         drb_report     = 0;
1065
  long int        cnt            = 0;
1066 1067
  uint16_t        header_compression_profile = 0;
  config_action_t action                     = CONFIG_ACTION_ADD;
gauthier's avatar
gauthier committed
1068 1069 1070
  SRB_ToAddMod_t *srb_toaddmod_p = NULL;
  DRB_ToAddMod_t *drb_toaddmod_p = NULL;
  pdcp_t         *pdcp_p         = NULL;
1071

1072 1073
  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
1074 1075
#ifdef Rel10
  int i,j;
gauthier's avatar
gauthier committed
1076 1077
  MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9_p = NULL;
  MBMS_SessionInfo_r9_t     *MBMS_SessionInfo_p        = NULL;
1078 1079
#endif

1080 1081 1082 1083 1084 1085
  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);
1086

1087 1088
  // srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels

gauthier's avatar
gauthier committed
1089
  if (srb2add_list_pP != NULL) {
1090 1091 1092 1093 1094
    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;
      lc_id = srb_id + 2;
1095 1096
      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);
gauthier's avatar
gauthier committed
1097

1098 1099 1100 1101 1102
      if (h_rc == HASH_TABLE_OK) {
        action = CONFIG_ACTION_MODIFY;
        LOG_D(PDCP, PROTOCOL_PDCP_CTXT_FMT" CONFIG_ACTION_MODIFY key 0x%"PRIx64"\n",