pdcp.c 66.1 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
21 22 23

/*! \file pdcp.c
 * \brief pdcp interface with RLC
24
 * \author Navid Nikaein and Lionel GAUTHIER
25
 * \date 2009-2012
26
 * \email navid.nikaein@eurecom.fr
27 28 29 30
 * \version 1.0
 */

#define PDCP_C
31 32
//#define DEBUG_PDCP_FIFO_FLUSH_SDU

33 34 35
#ifndef USER_MODE
#include <rtai_fifos.h>
#endif
36
#include "assertions.h"
37
#include "hashtable.h"
38 39 40 41 42
#include "pdcp.h"
#include "pdcp_util.h"
#include "pdcp_sequence_manager.h"
#include "LAYER2/RLC/rlc.h"
#include "LAYER2/MAC/extern.h"
43
#include "RRC/LITE/proto.h"
44 45 46
#include "pdcp_primitives.h"
#include "OCG.h"
#include "OCG_extern.h"
47
#include "otg_rx.h"
48 49 50 51
#include "UTIL/LOG/log.h"
#include <inttypes.h>
#include "platform_constants.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
gauthier's avatar
gauthier committed
52
#include "msc.h"
53

54 55 56 57
#if defined(ENABLE_SECURITY)
# include "UTIL/OSA/osa_defs.h"
#endif

58 59 60 61
#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
#endif

62
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
63
#  include "gtpv1u_eNB_task.h"
64
#  include "gtpv1u.h"
65 66
#endif

67 68 69 70 71 72 73 74 75 76 77 78 79
#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()
 */
80
boolean_t pdcp_data_req(
81
  protocol_ctxt_t*  ctxt_pP,
82 83 84 85 86 87
  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,
88 89 90
  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
  hash_key_t         key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t     h_rc;
gauthier's avatar
gauthier committed
105
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_IN);
106
  CHECK_CTXT_ARGS(ctxt_pP);
107

Cedric Roux's avatar
Cedric Roux committed
108 109 110 111 112
#if T_TRACER
  if (ctxt_pP->enb_flag != ENB_FLAG_NO)
    T(T_ENB_PDCP_DL, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->rnti), T_INT(rb_idP), T_INT(sdu_buffer_sizeP));
#endif

113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
  if (sdu_buffer_sizeP == 0) {
    LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
    return FALSE;
  }

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

  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");
  }
  
129
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
130
    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);
131
  } else {
132
    if (srb_flagP) {
nikaeinn's avatar
nikaeinn committed
133
      AssertError (rb_idP < 3, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, 3, ctxt_pP->module_id, ctxt_pP->rnti);
134
    } else {
135
      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);
136
    }
137
  }
gauthier's avatar
gauthier committed
138

139 140
  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);
141

142 143
  if (h_rc != HASH_TABLE_OK) {
    if (modeP != PDCP_TRANSMISSION_MODE_TRANSPARENT) {
144 145 146 147
      LOG_W(PDCP, PROTOCOL_CTXT_FMT" Instance is not configured for rb_id %d Ignoring SDU...\n",
	    PROTOCOL_CTXT_ARGS(ctxt_pP),
	    rb_idP);
      ctxt_pP->configured=FALSE;
148
      return FALSE;
149
    }
150 151
  }else{
    // instance for a given RB is configured
152
    ctxt_pP->configured=TRUE;
153
  }
154
    
155 156 157 158 159
  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);
  }
160

161
  // PDCP transparent mode for MBMS traffic
162

163
  if (modeP == PDCP_TRANSMISSION_MODE_TRANSPARENT) {
164
    LOG_D(PDCP, " [TM] Asking for a new mem_block of size %d\n",sdu_buffer_sizeP);
165
    pdcp_pdu_p = get_free_mem_block(sdu_buffer_sizeP, __func__);
166 167 168

    if (pdcp_pdu_p != NULL) {
      memcpy(&pdcp_pdu_p->data[0], sdu_buffer_pP, sdu_buffer_sizeP);
169
#if defined(DEBUG_PDCP_PAYLOAD)
170 171 172
      rlc_util_print_hex_octets(PDCP,
                                (unsigned char*)&pdcp_pdu_p->data[0],
                                sdu_buffer_sizeP);
173
#endif
174 175 176
      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;
177 178
      LOG_W(PDCP,PROTOCOL_CTXT_FMT" PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
            PROTOCOL_CTXT_ARGS(ctxt_pP));
179
#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
180 181
      AssertFatal(0, PROTOCOL_CTXT_FMT"[RB %u] PDCP_DATA_REQ SDU DROPPED, OUT OF MEMORY \n",
                  PROTOCOL_CTXT_ARGS(ctxt_pP),
182
                  rb_idP);
gauthier's avatar
gauthier committed
183
#endif
184
    }
185
  } else {
186 187 188 189 190 191 192 193 194 195
    // 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
196

197 198
    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),
199 200 201
          pdcp_pdu_size,
          pdcp_header_len,
          pdcp_tailer_len);
gauthier's avatar
gauthier committed
202

203 204 205
    /*
     * Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
     */
206
    pdcp_pdu_p = get_free_mem_block(pdcp_pdu_size, __func__);
207 208

    if (pdcp_pdu_p != NULL) {
209
      /*
210 211 212
       * Create a Data PDU with header and append data
       *
       * Place User Plane PDCP Data PDU header first
213
       */
214

215 216 217 218 219 220
      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);
221

222
        if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
223 224
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
225

226 227 228 229 230
          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);
          }
231

gauthier's avatar
gauthier committed
232
          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
233 234 235 236 237 238 239
          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 ;
240

241
        if (pdcp_serialize_user_plane_data_pdu_with_long_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
242 243
          LOG_E(PDCP, PROTOCOL_PDCP_CTXT_FMT" Cannot fill PDU buffer with relevant header fields!\n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP,pdcp_p));
244

245 246 247 248 249
          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);
          }
250

gauthier's avatar
gauthier committed
251
          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
252 253
          return FALSE;
        }
gauthier's avatar
gauthier committed
254
      }
255

gauthier's avatar
gauthier committed
256
      /*
257
       * Validate incoming sequence number, there might be a problem with PDCP initialization
gauthier's avatar
gauthier committed
258
       */
259
      if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp_p->seq_num_size)) {
260 261 262 263
        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);
264

265
        free_mem_block(pdcp_pdu_p, __func__);
266

267 268 269 270 271
        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);
        }
272

gauthier's avatar
gauthier committed
273
        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
274 275 276 277 278 279 280 281 282 283 284
        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
285
      for (i=0; i<pdcp_tailer_len; i++) {
286
        pdcp_pdu_p->data[pdcp_header_len + sdu_buffer_sizeP + i] = 0x00;// pdu_header.mac_i[i];
287
      }
288 289 290 291 292 293 294

#if defined(ENABLE_SECURITY)

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

295 296 297 298 299
        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);
        }
300 301 302 303 304 305 306 307 308 309

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

310 311 312 313 314
        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);
        }
315 316 317 318 319 320 321 322 323 324 325 326
      }

#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");

327 328 329 330 331
      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);
      }
332 333 334 335 336 337 338 339 340

#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
341
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
342 343 344 345 346 347 348
      return FALSE;
    }

    /*
     * Ask sublayer to transmit data and check return value
     * to see if RLC succeeded
     */
349
#ifdef PDCP_MSG_PRINT
350 351 352
    int i=0;
    LOG_F(PDCP,"[MSG] PDCP DL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);

353
    for (i = 0; i < pdcp_pdu_size; i++) {
354
      LOG_F(PDCP,"%02x ", ((uint8_t*)pdcp_pdu_p->data)[i]);
355
    }
356 357 358 359

    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);
360

361
  }
362

363 364 365
  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
366
    ret=TRUE;
367 368 369 370
    break;

  case RLC_OP_STATUS_BAD_PARAMETER:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Bad Parameter' reason!\n");
371 372
    ret= FALSE;
    break;
373

374 375
  case RLC_OP_STATUS_INTERNAL_ERROR:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Internal Error' reason!\n");
376 377
    ret= FALSE;
    break;
378 379 380

  case RLC_OP_STATUS_OUT_OF_RESSOURCES:
    LOG_W(PDCP, "Data sending request over RLC failed with 'Out of Resources' reason!\n");
381 382
    ret= FALSE;
    break;
383 384 385

  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);
386 387
    ret= FALSE;
    break;
388
  }
389

390 391 392 393 394
  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);
  }
395

396 397 398 399
  /*
   * Control arrives here only if rlc_data_req() returns RLC_OP_STATUS_OK
   * so we return TRUE afterwards
   */
400
  /*
401
   if (rb_id>=DTCH) {
402
    if (ctxt_pP->enb_flag == 1) {
403 404 405 406 407 408 409
      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
410
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_REQ,VCD_FUNCTION_OUT);
411
  return ret;
412 413 414

}

gauthier's avatar
gauthier committed
415

416 417 418
//-----------------------------------------------------------------------------
boolean_t
pdcp_data_ind(
419 420 421 422 423
  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,
424 425 426
  mem_block_t* const sdu_buffer_pP
)
//-----------------------------------------------------------------------------
427
{
gauthier's avatar
gauthier committed
428 429 430
  pdcp_t      *pdcp_p          = NULL;
  list_t      *sdu_list_p      = NULL;
  mem_block_t *new_sdu_p       = NULL;
431 432
  uint8_t      pdcp_header_len = 0;
  uint8_t      pdcp_tailer_len = 0;
gauthier's avatar
gauthier committed
433
  pdcp_sn_t    sequence_number = 0;
434
  volatile sdu_size_t   payload_offset  = 0;
435
  rb_id_t      rb_id            = rb_idP;
436
  boolean_t    packet_forwarded = FALSE;
437 438 439
  hash_key_t      key             = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
440
  MessageDef  *message_p        = NULL;
441
  uint8_t     *gtpu_buffer_p    = NULL;
442
#endif
443

444

gauthier's avatar
gauthier committed
445
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_IN);
446

447 448
#ifdef OAI_EMU

449
  CHECK_CTXT_ARGS(ctxt_pP);
450

451
#endif
452
#ifdef PDCP_MSG_PRINT
453 454 455
  int i=0;
  LOG_F(PDCP,"[MSG] PDCP UL %s PDU on rb_id %d\n", (srb_flagP)? "CONTROL" : "DATA", rb_idP);

456
  for (i = 0; i < sdu_buffer_sizeP; i++) {
457
    LOG_F(PDCP,"%02x ", ((uint8_t*)sdu_buffer_pP->data)[i]);
458
  }
459 460 461

  LOG_F(PDCP,"\n");
#endif
462

Cedric Roux's avatar
Cedric Roux committed
463 464 465 466 467
#if T_TRACER
  if (ctxt_pP->enb_flag != ENB_FLAG_NO)
    T(T_ENB_PDCP_UL, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->rnti), T_INT(rb_idP), T_INT(sdu_buffer_sizeP));
#endif

468
  if (MBMS_flagP) {
469 470 471 472 473 474
    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);
475 476

    if (ctxt_pP->enb_flag == ENB_FLAG_NO) {
477
      LOG_D(PDCP, "e-MBMS Data indication notification for PDCP entity from eNB %u to UE %x "
478
            "and radio bearer ID %d rlc sdu size %d ctxt_pP->enb_flag %d\n",
479 480 481 482 483
            ctxt_pP->module_id,
            ctxt_pP->rnti,
            rb_idP,
            sdu_buffer_sizeP,
            ctxt_pP->enb_flag);
484

gauthier's avatar
sync  
gauthier committed
485
    } else {
486 487 488 489 490 491 492
      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
493
    }
494

gauthier's avatar
sync  
gauthier committed
495
  } else {
496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514
    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);
515
      free_mem_block(sdu_buffer_pP, __func__);
gauthier's avatar
gauthier committed
516
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
517
      return FALSE;
518
    }
519
  }
520

gauthier's avatar
gauthier committed
521
  sdu_list_p = &pdcp_sdu_list;
522

gauthier's avatar
gauthier committed
523
  if (sdu_buffer_sizeP == 0) {
524 525
    LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
    return FALSE;
526
  }
527

528 529 530 531 532
  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);
  }
533 534

  /*
535 536
   * 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
537
   */
538

539
  if (MBMS_flagP == 0 ) {
540 541 542 543 544 545
    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;
546 547 548 549 550 551 552

      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
553
      } else {
554
        //sequence_number = 4095;
555 556 557 558
        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
559
      }
560

561 562
      //uint8_t dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer_pP->data);
    }
563

564 565 566 567
    /*
     * Check if incoming SDU is long enough to carry a PDU header
     */
    if (sdu_buffer_sizeP < pdcp_header_len + pdcp_tailer_len ) {
568 569 570 571
      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);
572
      free_mem_block(sdu_buffer_pP, __func__);
573

574 575 576 577 578
      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);
      }
579

gauthier's avatar
gauthier committed
580
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
581 582 583
      return FALSE;
    }

584
    if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp_p, srb_flagP) == TRUE) {
585
#if 0
586
      LOG_T(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window\n", sequence_number);
587
#endif
588
      /* if (dc == PDCP_DATA_PDU )
589 590 591
      LOG_D(PDCP, "Passing piggybacked SDU to NAS driver...\n");
      else
      LOG_D(PDCP, "Passing piggybacked SDU to RRC ...\n");*/
592
    } else {
593 594 595 596
      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
597
      /*
598 599
       * XXX Till we implement in-sequence delivery and duplicate discarding
       * mechanism all out-of-order packets will be delivered to RRC/IP
600 601
       */
#if 0
602
      LOG_D(PDCP, "Ignoring PDU...\n");
603
      free_mem_block(sdu_buffer, __func__);
604
      return FALSE;
605
#else
606
      //LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
607
#endif
608
    }
609 610 611

    // SRB1/2: control-plane data
    if (srb_flagP) {
612
#if defined(ENABLE_SECURITY)
613

614
      if (pdcp_p->security_activated == 1) {
615 616 617 618 619
        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);
        }
620 621 622 623 624 625 626 627 628 629

        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);

630 631 632 633 634
        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
635
      }
636

637 638
#endif
      //rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
639 640 641 642 643 644 645
  	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);
646 647 648 649
      rrc_data_ind(ctxt_pP,
		   rb_id,
		   sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len,
		   (uint8_t*)&sdu_buffer_pP->data[pdcp_header_len]);
650
      free_mem_block(sdu_buffer_pP, __func__);
651

652
      // free_mem_block(new_sdu, __func__);
653 654 655 656 657
      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);
      }
658

gauthier's avatar
gauthier committed
659
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
660 661
      return TRUE;
    }
662 663 664 665

    /*
     * DRBs
     */
666 667
    payload_offset=pdcp_header_len;// PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
#if defined(ENABLE_SECURITY)
668

669
    if (pdcp_p->security_activated == 1) {
670 671 672 673 674
      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);
      }
675

676
      pdcp_validate_security(
677 678 679 680 681 682 683 684 685
        ctxt_pP,
        pdcp_p,
        srb_flagP,
        rb_idP,
        pdcp_header_len,
        sequence_number,
        sdu_buffer_pP->data,
        sdu_buffer_sizeP - pdcp_tailer_len);

686 687 688 689 690
      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);
      }
691

692
    }
693

694
#endif
695
  } else {
696
    payload_offset=0;
697
  }
698

699
#if defined(USER_MODE) && defined(OAI_EMU)
700

701
  if (oai_emulation.info.otg_enabled == 1) {
Cedric Roux's avatar
Cedric Roux committed
702
    //unsigned int dst_instance;
703 704
    int    ctime;

705
    if ((pdcp_p->rlc_mode == RLC_MODE_AM)&&(MBMS_flagP==0) ) {
706 707 708
      pdcp_p->last_submitted_pdcp_rx_sn = sequence_number;
    }

709
#if defined(DEBUG_PDCP_PAYLOAD)
710 711 712
    rlc_util_print_hex_octets(PDCP,
                              (unsigned char*)&sdu_buffer_pP->data[payload_offset],
                              sdu_buffer_sizeP - payload_offset);
713
#endif
gauthier's avatar
gauthier committed
714

715
    ctime = oai_emulation.info.time_ms; // avg current simulation time in ms : we may get the exact time through OCG?
716 717 718 719 720 721
    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);
    }
722 723 724 725
    if (otg_rx_pkt(
          ctxt_pP->instance,
          ctime,
          (const char*)(&sdu_buffer_pP->data[payload_offset]),
726
                   sdu_buffer_sizeP - payload_offset ) == 0 ) {
727
      free_mem_block(sdu_buffer_pP, __func__);
728

729 730 731 732 733
      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);
      }
734

gauthier's avatar
gauthier committed
735
      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
gauthier's avatar
gauthier committed
736
      return TRUE;
737
    }
738
  }
739 740 741 742 743

#else

  if (otg_enabled==1) {
    LOG_D(OTG,"Discarding received packed\n");
744
    free_mem_block(sdu_buffer_pP, __func__);
745

746 747 748 749 750
    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);
    }
751

gauthier's avatar
gauthier committed
752
    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
753 754 755
    return TRUE;
  }

756 757
#endif

gauthier's avatar
gauthier committed
758

759 760 761 762 763 764 765 766
  // 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)
   */
767
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
768

769
  if ((TRUE == ctxt_pP->enb_flag) && (FALSE == srb_flagP)) {
770 771 772 773 774 775 776 777
    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);
778 779 780 781 782 783 784 785 786 787
    //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;
788
    GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rnti         = ctxt_pP->rnti;
789 790 791
    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;
792
  }
793

794 795 796
#else
  packet_forwarded = FALSE;
#endif
797

798
  if (FALSE == packet_forwarded) {
799
    new_sdu_p = get_free_mem_block(sdu_buffer_sizeP - payload_offset + sizeof (pdcp_data_ind_header_t), __func__);
800

801 802 803 804 805 806 807 808 809 810
    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;
811
      AssertFatal((sdu_buffer_sizeP - payload_offset >= 0), "invalid PDCP SDU size!");
812 813 814 815 816

      // 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
817
#if defined(OAI_EMU)
818
        ((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
819
#endif
820
      } else {
821
        ((pdcp_data_ind_header_t*) new_sdu_p->data)->rb_id = rb_id + (ctxt_pP->module_id * maxDRB);
gauthier's avatar
gauthier committed
822
#if defined(OAI_EMU)
823
        ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst  = ctxt_pP->module_id - oai_emulation.info.first_enb_local;
824
#endif
825
      }
826 827 828 829 830
#ifdef DEBUG_PDCP_FIFO_FLUSH_SDU
      static uint32_t pdcp_inst = 0;
      ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst = pdcp_inst++;
      LOG_D(PDCP, "inst=%d size=%d\n", ((pdcp_data_ind_header_t*) new_sdu_p->data)->inst, ((pdcp_data_ind_header_t *) new_sdu_p->data)->data_size);
#endif
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856

      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
857
  }
858

gauthier's avatar
gauthier committed
859
#if defined(STOP_ON_IP_TRAFFIC_OVERLOAD)
860
  else {
861 862
    AssertFatal(0, PROTOCOL_PDCP_CTXT_FMT" PDCP_DATA_IND SDU DROPPED, OUT OF MEMORY \n",
                PROTOCOL_PDCP_CTXT_ARGS(ctxt_pP, pdcp_p));
863 864
  }

gauthier's avatar
gauthier committed
865
#endif
866

867
  free_mem_block(sdu_buffer_pP, __func__);
868

869 870 871 872 873
  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);
  }
874

gauthier's avatar
gauthier committed
875
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_DATA_IND,VCD_FUNCTION_OUT);
876 877 878 879
  return TRUE;
}

//-----------------------------------------------------------------------------
880 881 882 883 884
void
pdcp_run (
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
885
{
886
#if defined(ENABLE_ITTI)
887 888 889 890
  MessageDef   *msg_p;
  const char   *msg_name;
  instance_t    instance;
  int           result;
891
  protocol_ctxt_t  ctxt;
892
#endif
893

894 895 896 897 898
  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);
  }
899

gauthier's avatar
gauthier committed
900
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
901

902 903
#if defined(ENABLE_ITTI)

904 905 906 907 908 909 910 911 912 913
  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:
914
	PROTOCOL_CTXT_SET_BY_MODULE_ID(
915 916 917 918
          &ctxt,
          RRC_DCCH_DATA_REQ (msg_p).module_id,
          RRC_DCCH_DATA_REQ (msg_p).enb_flag,
          RRC_DCCH_DATA_REQ (msg_p).rnti,
919 920 921
          RRC_DCCH_DATA_REQ (msg_p).frame, 
	  0,
	  RRC_DCCH_DATA_REQ (msg_p).eNB_index);
nikaeinn's avatar
nikaeinn committed
922
        LOG_I(PDCP, PROTOCOL_CTXT_FMT"Received %s from %s: instance %d, rb_id %d, muiP %d, confirmP %d, mode %d\n",
923 924 925 926 927 928 929 930
              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);
931 932 933 934 935 936 937 938 939

        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);
940 941
        if (result != TRUE)
          LOG_E(PDCP, "PDCP data request failed!\n");
942 943 944 945 946 947 948 949 950

        // 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
951
      }
952 953 954 955

      result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
      AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
    }
956
  } while(msg_p != NULL);
957 958 959

# if 0
  {
960
    MessageDef *msg_resp_p;
961

962
    msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);
963

964
    itti_send_msg_to_task(TASK_RRC_ENB, 1, msg_resp_p);
965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
  }
  {
    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
981 982
#endif

983
#if defined(USER_MODE) && defined(OAI_EMU)
984
    pdcp_fifo_read_input_sdus_from_otg(ctxt_pP);
985

gauthier's avatar
gauthier committed
986
#endif
987 988

  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
989
#if defined(LINK_ENB_PDCP_TO_GTPV1U)
990

991
  if (ctxt_pP->enb_flag == ENB_FLAG_NO)
gauthier's avatar
gauthier committed
992
#endif
gauthier's avatar
gauthier committed
993
  {
994
    pdcp_fifo_read_input_sdus(ctxt_pP);
gauthier's avatar
gauthier committed
995
  }
996

997
  // PDCP -> NAS/IP traffic: RX
998 999 1000
  if (ctxt_pP->enb_flag) {
    start_meas(&eNB_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
gauthier's avatar
gauthier committed
1001

1002 1003 1004
  else {
    start_meas(&UE_pdcp_stats[ctxt_pP->module_id].pdcp_ip);
  }
1005

1006
  pdcp_fifo_flush_sdus(ctxt_pP);
1007

1008 1009 1010 1011 1012
  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);
  }
1013

1014 1015 1016 1017 1018
  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
1019
  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
1020 1021
}

1022

1023 1024 1025 1026 1027 1028 1029
//-----------------------------------------------------------------------------
boolean_t
pdcp_remove_UE(
  const protocol_ctxt_t* const  ctxt_pP
)
//-----------------------------------------------------------------------------
{
1030 1031
  DRB_Identity_t  srb_id         = 0;
  DRB_Identity_t  drb_id         = 0;
1032 1033
  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
1034 1035 1036

  // check and remove SRBs first

1037
  for (srb_id=0; srb_id<2; srb_id++) {
1038 1039
    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);
1040 1041
  }

1042
  for (drb_id=0; drb_id<maxDRB; drb_id++) {
1043 1044
    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);
1045 1046 1047

  }

1048 1049
  (void)h_rc; /* remove gcc warning "set but not used" */

1050 1051 1052 1053
  return 1;
}


1054 1055 1056
//-----------------------------------------------------------------------------
boolean_t
rrc_pdcp_config_asn1_req (
1057 1058 1059 1060 1061 1062 1063 1064
  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
1065
#ifdef Rel10
1066
  ,PMCH_InfoList_r9_t*  const pmch_InfoList_r9_pP
1067
#endif
1068
  ,rb_id_t                 *const defaultDRB 
gauthier's avatar
gauthier committed
1069
)
1070
//-----------------------------------------------------------------------------
1071
{
1072
  long int        lc_id          = 0;
1073
  DRB_Identity_t  srb_id         = 0;
1074
  long int        mch_id         = 0;
gauthier's avatar
gauthier committed
1075
  rlc_mode_t      rlc_type       = RLC_MODE_NONE;
1076
  DRB_Identity_t  drb_id         = 0;
gauthier's avatar
gauthier committed
1077
  DRB_Identity_t *pdrb_id_p      = NULL;
1078
  uint8_t         drb_sn         = 12;
1079 1080
  uint8_t         srb_sn         = 5; // fixed sn for SRBs
  uint8_t         drb_report     = 0;
1081
  long int        cnt            = 0;
1082 1083
  uint16_t        header_compression_profile = 0;
  config_action_t action                     = CONFIG_ACTION_ADD;
gauthier's avatar
gauthier committed
1084 1085 1086
  SRB_ToAddMod_t *srb_toaddmod_p = NULL;
  DRB_ToAddMod_t *drb_toaddmod_p = NULL;
  pdcp_t         *pdcp_p         = NULL;
1087

1088 1089
  hash_key_t      key            = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_rc;
1090 1091
  hash_key_t      key_defaultDRB = HASHTABLE_NOT_A_KEY_VALUE;
  hashtable_rc_t  h_defaultDRB_rc;