pdcp.c 47.6 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()
 */
gauthier's avatar
gauthier committed
79 80
BOOL pdcp_data_req(module_id_t enb_mod_idP, module_id_t ue_mod_idP, frame_t frameP, eNB_flag_t enb_flagP, rb_id_t rb_idP, mui_t muiP, u32 confirmP,
    sdu_size_t sdu_buffer_sizeP, unsigned char* sdu_buffer_pP, u8 modeP)
81 82
{
  //-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98
  pdcp_t            *pdcp_p          = NULL;
  u8                 i               = 0;
  u8                 pdcp_header_len = 0;
  u8                 pdcp_tailer_len = 0;
  u16                pdcp_pdu_size   = 0;
  u16                current_sn      = 0;
  mem_block_t       *pdcp_pdu_p      = NULL;
  rlc_op_status_t    rlc_status;
  rb_id_t            rb_id_rlc       = 0;

  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);
  AssertError (rb_idP < NB_RB_MAX, return FALSE, "RB id is too high (%u/%d) %u %u!\n", rb_idP, NB_RB_MAX, ue_mod_idP, enb_mod_idP);

  if (enb_flagP == 0) {
      pdcp_p = &pdcp_array_ue[ue_mod_idP][rb_idP];
99
  } else {
gauthier's avatar
gauthier committed
100
      pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][rb_idP];
101
  }
102

gauthier's avatar
gauthier committed
103 104 105 106 107 108 109 110 111
  if ((pdcp_p->instanciated_instance == 0) && (modeP != PDCP_TM)) {
      if (enb_flagP == 0) {
          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;
112
  }
gauthier's avatar
gauthier committed
113 114 115
  if (sdu_buffer_sizeP == 0) {
      LOG_W(PDCP, "Handed SDU is of size 0! Ignoring...\n");
      return FALSE;
116 117 118 119 120
  }
  /*
   * XXX MAX_IP_PACKET_SIZE is 4096, shouldn't this be MAX SDU size, which is 8188 bytes?
   */

gauthier's avatar
gauthier committed
121 122 123 124 125
  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");
126 127 128 129
  }

  // PDCP transparent mode for MBMS traffic 

gauthier's avatar
gauthier committed
130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
  if (modeP == PDCP_TM) {
      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);
          rlc_status = rlc_data_req(enb_mod_idP, ue_mod_idP, frameP, enb_flagP, RLC_MBMS_YES, rb_idP, muiP, confirmP, sdu_buffer_sizeP, pdcp_pdu_p);
      } else {
        rlc_status = RLC_OP_STATUS_OUT_OF_RESSOURCES;
#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
      }
147
  } else {
gauthier's avatar
gauthier committed
148 149 150 151
      // calculate the pdcp header and trailer size
      if (rb_idP < DTCH) {
          pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
          pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
152
      } else {
gauthier's avatar
gauthier committed
153 154
          pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
          pdcp_tailer_len = 0;
155
      }
gauthier's avatar
gauthier committed
156 157 158 159 160 161 162 163 164 165 166
      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);

167
      /*
gauthier's avatar
gauthier committed
168
       * Allocate a new block for the new PDU (i.e. PDU header and SDU payload)
169
       */
gauthier's avatar
gauthier committed
170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
      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
           */

          if ((rb_idP % NB_RB_MAX) < DTCH) { // this Control plane PDCP Data PDU
              pdcp_control_plane_data_pdu_header pdu_header;
              pdu_header.sn = pdcp_get_next_tx_seq_number(pdcp_p);
              current_sn = pdu_header.sn;
              memset(&pdu_header.mac_i[0],0,PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE);
              if (pdcp_serialize_control_plane_data_pdu_with_SRB_sn_buffer((unsigned char*)pdcp_pdu_p->data, &pdu_header) == FALSE) {
                  LOG_E(PDCP, "Cannot fill PDU buffer with relevant header fields!\n");
                  return FALSE;
              }
          } else {
              pdcp_user_plane_data_pdu_header_with_long_sn pdu_header;
              pdu_header.dc = (modeP == 1) ? PDCP_DATA_PDU :  PDCP_CONTROL_PDU;
              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");
                  return FALSE;
              }
          }
          /*
           * Validate incoming sequence number, there might be a problem with PDCP initialization
           */
          if (current_sn > pdcp_calculate_max_seq_num_for_given_size(pdcp_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);
              return FALSE;
          }
209

gauthier's avatar
gauthier committed
210
          LOG_D(PDCP, "Sequence number %d is assigned to current PDU\n", current_sn);
211

gauthier's avatar
gauthier committed
212 213
          /* Then append data... */
          memcpy(&pdcp_pdu_p->data[pdcp_header_len], sdu_buffer_pP, sdu_buffer_sizeP);
214

gauthier's avatar
gauthier committed
215 216 217 218 219
          //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];
220 221

#if defined(ENABLE_SECURITY)
gauthier's avatar
gauthier committed
222 223 224 225 226 227 228
          if ((pdcp->security_activated != 0) &&
              ((pdcp->cipheringAlgorithm) != 0) &&
              ((pdcp->integrityProtAlgorithm) != 0)) {
              pdcp_apply_security(pdcp, rb_id % NB_RB_MAX,
                  pdcp_header_len, current_sn, pdcp_pdu->data,
                  sdu_buffer_size);
          }
229 230
#endif

gauthier's avatar
gauthier committed
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252
          /* 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");
#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
       */
      rlc_status = rlc_data_req(enb_mod_idP, ue_mod_idP, frameP, enb_flagP, 0, rb_idP, muiP, confirmP, pdcp_pdu_size, pdcp_pdu_p);
253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293
  }
  switch (rlc_status) {
  case RLC_OP_STATUS_OK:
    LOG_D(PDCP, "Data sending request over RLC succeeded!\n");
    break;

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

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

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

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

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

}

gauthier's avatar
gauthier committed
294 295 296

BOOL pdcp_data_ind(module_id_t enb_mod_idP, module_id_t ue_mod_idP, frame_t frameP, eNB_flag_t enb_flagP, u8_t MBMS_flagP, rb_id_t rb_idP, sdu_size_t sdu_buffer_sizeP, \
    mem_block_t* sdu_buffer_pP, u8 is_data_planeP)
297 298
{
  //-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
  pdcp_t      *pdcp_p          = NULL;
  list_t      *sdu_list_p      = NULL;
  mem_block_t *new_sdu_p       = NULL;
  u8           pdcp_header_len = 0;
  u8           pdcp_tailer_len = 0;
  u16          sequence_number = 0;
  u8           payload_offset  = 0;

  AssertFatal (enb_mod_idP >= oai_emulation.info.first_enb_local,
      "eNB inst 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),
      "eNB inst 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  >= oai_emulation.info.first_ue_local,
      "UE inst is too low (%u/%d)!\n",
      ue_mod_idP,
      oai_emulation.info.first_ue_local);
  AssertFatal (ue_mod_idP  < (oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local),
      "UE inst is too high (%u/%d)!\n",
      ue_mod_idP,
      oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local);
  DevCheck4(rb_idP < NB_RB_MAX, rb_idP, NB_RB_MAX, enb_mod_idP, ue_mod_idP);

  if (enb_flagP == 0) {
      pdcp_p = &pdcp_array_ue[ue_mod_idP][rb_idP];

      LOG_I(PDCP, "Data indication notification for PDCP entity from eNB %u to UE %u "
329
          "and radio bearer ID %d rlc sdu size %d eNB_flag %d\n",
gauthier's avatar
gauthier committed
330
          ue_mod_idP, enb_mod_idP, rb_idP, sdu_buffer_sizeP, enb_flagP);
331
  } else {
gauthier's avatar
gauthier committed
332
      pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][rb_idP];
333

gauthier's avatar
gauthier committed
334
      LOG_I(PDCP, "Data indication notification for PDCP entity from UE %u to eNB %u "
335
          "and radio bearer ID %d rlc sdu size %d eNB_flag %d eNB_id %d\n",
gauthier's avatar
gauthier committed
336
          enb_mod_idP, ue_mod_idP, rb_idP, sdu_buffer_sizeP, enb_flagP, enb_mod_idP);
337
  }
gauthier's avatar
gauthier committed
338 339
  sdu_list_p = &pdcp_sdu_list;
#
340

gauthier's avatar
gauthier committed
341 342 343
  if (sdu_buffer_sizeP == 0) {
      LOG_W(PDCP, "SDU buffer size is zero! Ignoring this chunk!\n");
      return FALSE;
344 345 346
  }

  /*
gauthier's avatar
gauthier committed
347 348
   * Check if incoming SDU is long enough to carry a PDU header
   */
349
  if (MBMS_flagP == 0 ) {
gauthier's avatar
gauthier committed
350 351 352 353 354 355 356
      if ((rb_idP % NB_RB_MAX) < DTCH) {
          pdcp_header_len = PDCP_CONTROL_PLANE_DATA_PDU_SN_SIZE;
          pdcp_tailer_len = PDCP_CONTROL_PLANE_DATA_PDU_MAC_I_SIZE;
      } else {
          pdcp_header_len = PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
          pdcp_tailer_len = 0;
      }
357

gauthier's avatar
gauthier committed
358 359 360 361 362
      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);
          return FALSE;
      }
363

gauthier's avatar
gauthier committed
364
      /*
365 366 367 368
       * 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
369 370 371 372 373 374 375 376 377
      if (pdcp_header_len == PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE) { // DRB
          sequence_number =     pdcp_get_sequence_number_of_pdu_with_long_sn((unsigned char*)sdu_buffer_pP->data);
          //       u8 dc = pdcp_get_dc_filed((unsigned char*)sdu_buffer->data);
      } else { //SRB1/2
          sequence_number =   pdcp_get_sequence_number_of_pdu_with_SRB_sn((unsigned char*)sdu_buffer_pP->data);
      }
      if (pdcp_is_rx_seq_number_valid(sequence_number, pdcp_p) == TRUE) {
          LOG_D(PDCP, "Incoming PDU has a sequence number (%d) in accordance with RX window\n", sequence_number);
          /* if (dc == PDCP_DATA_PDU )
378 379 380
	   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
381 382 383 384 385 386
      } 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
           */
387
#if 0
gauthier's avatar
gauthier committed
388 389 390
          LOG_D(PDCP, "Ignoring PDU...\n");
          free_mem_block(sdu_buffer);
          return FALSE;
391
#else
gauthier's avatar
gauthier committed
392
          LOG_W(PDCP, "Delivering out-of-order SDU to upper layer...\n");
393
#endif
394
      }
gauthier's avatar
gauthier committed
395 396 397 398 399 400 401 402
      // SRB1/2: control-plane data
      if ( (rb_idP % NB_RB_MAX) <  DTCH ){
#if defined(ENABLE_SECURITY)
          if (pdcp->security_activated == 1) {
              pdcp_validate_security(pdcp, rb_id, pdcp_header_len,
                  sequence_number, sdu_buffer->data,
                  sdu_buffer_size - pdcp_tailer_len);
          }
403
#endif
gauthier's avatar
gauthier committed
404 405 406 407 408 409 410 411 412 413 414 415 416
//rrc_lite_data_ind(module_id, //Modified MW - L2 Interface
          pdcp_rrc_data_ind(enb_mod_idP,
              ue_mod_idP,
              frameP,
              enb_flagP,
              rb_idP,
              sdu_buffer_sizeP - pdcp_header_len - pdcp_tailer_len,
              (u8*)&sdu_buffer_pP->data[pdcp_header_len]);
          free_mem_block(sdu_buffer_pP);
          // free_mem_block(new_sdu);
          return TRUE;
      }
      payload_offset=PDCP_USER_PLANE_DATA_PDU_LONG_SN_HEADER_SIZE;
417
#if defined(ENABLE_SECURITY)
gauthier's avatar
gauthier committed
418 419 420 421 422
      if (pdcp->security_activated == 1) {
          pdcp_validate_security(pdcp_p, rb_idP % NB_RB_MAX, pdcp_header_len,
              sequence_number, sdu_buffer->data,
              sdu_buffer_size - pdcp_tailer_len);
      }
423
#endif
424
  } else {
gauthier's avatar
gauthier committed
425
      payload_offset=0;
426 427
  }
#if defined(USER_MODE) && defined(OAI_EMU)
428
  if (oai_emulation.info.otg_enabled == 1) {
gauthier's avatar
gauthier committed
429 430 431 432 433 434 435 436 437 438 439 440 441 442
      module_id_t src_id, dst_id;
      int    ctime;

      src_id = (enb_flagP != 0) ? ue_mod_idP : enb_mod_idP;
      dst_id = (enb_flagP == 0) ? ue_mod_idP : enb_mod_idP;
      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",
          enb_flagP, rb_idP, src_id, dst_id);

      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);
          return TRUE;
      }
443 444 445
  }
#else
  if (otg_enabled==1) {
gauthier's avatar
gauthier committed
446 447 448
      LOG_D(OTG,"Discarding received packed\n");
      free_mem_block(sdu_buffer_pP);
      return TRUE;
449 450
  }
#endif
gauthier's avatar
gauthier committed
451
  new_sdu_p = get_free_mem_block(sdu_buffer_sizeP - payload_offset + sizeof (pdcp_data_ind_header_t));
452

gauthier's avatar
gauthier committed
453 454
  if (new_sdu_p) {
      /*
455 456
       * Prepend PDCP indication header which is going to be removed at pdcp_fifo_flush_sdus()
       */
gauthier's avatar
gauthier committed
457 458 459 460 461 462 463 464 465 466 467 468 469 470
      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 (enb_flagP == 0) {
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->rb_id = rb_idP;
#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 {
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->rb_id = rb_idP + (ue_mod_idP * NB_RB_MAX);
#if defined(OAI_EMU)
          ((pdcp_data_ind_header_t *) new_sdu_p->data)->inst  = enb_mod_idP - oai_emulation.info.first_enb_local;
471
#endif
gauthier's avatar
gauthier committed
472 473
      }

474

gauthier's avatar
gauthier committed
475 476 477
      // XXX Decompression would be done at this point

      /*
478 479 480 481 482
       * 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
483 484 485 486 487 488 489 490 491 492 493 494 495
      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);

      /*
496 497 498
       * Update PDCP statistics
       * XXX Following two actions are identical, is there a merge error?
       */
gauthier's avatar
gauthier committed
499 500 501 502

      /*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;
503
    } else {
gauthier's avatar
gauthier committed
504 505 506 507 508 509 510 511 512 513 514 515
      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,
            rb_idP);
516
  }
gauthier's avatar
gauthier committed
517
#endif
518

gauthier's avatar
gauthier committed
519
  free_mem_block(sdu_buffer_pP);
520 521 522 523 524

  return TRUE;
}

//-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
525
void pdcp_run (frame_t frameP, eNB_flag_t  eNB_flag, module_id_t ue_mod_idP, module_id_t enb_mod_idP) {
526
  //-----------------------------------------------------------------------------
527
#if defined(ENABLE_ITTI)
528 529 530 531
  MessageDef   *msg_p;
  const char   *msg_name;
  instance_t    instance;
  int           result;
532
#endif
533

534
  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_IN);
535

536 537
#if defined(ENABLE_ITTI)
  do {
gauthier's avatar
gauthier committed
538 539
      // Checks if a message has been sent to PDCP sub-task
      itti_poll_msg (eNB_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, &msg_p);
540

gauthier's avatar
gauthier committed
541 542 543
      if (msg_p != NULL) {
          msg_name = ITTI_MSG_NAME (msg_p);
          instance = ITTI_MSG_INSTANCE (msg_p);
544

gauthier's avatar
gauthier committed
545 546 547
          switch (ITTI_MSG_ID(msg_p)) {
          case RRC_DCCH_DATA_REQ:
            LOG_I(PDCP, "Received %s from %s: instance %d, frame %d, eNB_flag %d, rb_id %d, muiP %d, confirmP %d, mode %d\n",
548
                msg_name, ITTI_MSG_ORIGIN_NAME(msg_p), instance,
549 550 551
                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);

gauthier's avatar
gauthier committed
552 553 554 555 556
            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,
                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);
            AssertFatal (result == TRUE, "PDCP data request failed!\n");
557

gauthier's avatar
gauthier committed
558 559 560 561
            // 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;
562

gauthier's avatar
gauthier committed
563 564 565 566
          default:
            LOG_E(PDCP, "Received unexpected message %s\n", msg_name);
            break;
          }
567

gauthier's avatar
gauthier committed
568 569 570
          result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
          AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
      }
571
  } while(msg_p != NULL);
572 573 574

# if 0
  {
gauthier's avatar
gauthier committed
575
      MessageDef *msg_resp_p;
576

gauthier's avatar
gauthier committed
577
      msg_resp_p = itti_alloc_new_message(TASK_PDCP_ENB, MESSAGE_TEST);
578

gauthier's avatar
gauthier committed
579
      itti_send_msg_to_task(TASK_RRC_ENB, 1, msg_resp_p);
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
  }
  {
    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
596 597
#endif

gauthier's avatar
gauthier committed
598
  pdcp_fifo_read_input_sdus_from_otg(frameP, eNB_flag, ue_mod_idP, enb_mod_idP);
599 600

  // IP/NAS -> PDCP traffic : TX, read the pkt from the upper layer buffer
gauthier's avatar
gauthier committed
601
  pdcp_fifo_read_input_sdus(frameP, eNB_flag, ue_mod_idP, enb_mod_idP);
602 603

  // PDCP -> NAS/IP traffic: RX
gauthier's avatar
gauthier committed
604
  pdcp_fifo_flush_sdus(frameP, eNB_flag, enb_mod_idP, ue_mod_idP);
605 606 607 608

  vcd_signal_dumper_dump_function_by_name(VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_RUN, VCD_FUNCTION_OUT);
}

gauthier's avatar
gauthier committed
609 610 611 612 613 614 615 616 617 618 619
BOOL rrc_pdcp_config_asn1_req (module_id_t               enb_mod_idP,
    module_id_t               ue_mod_idP,
    frame_t              frameP,
    eNB_flag_t           enb_flagP,
    SRB_ToAddModList_t  *srb2add_list_pP,
    DRB_ToAddModList_t  *drb2add_list_pP,
    DRB_ToReleaseList_t *drb2release_list_pP,
    u8                   security_modeP,
    u8                  *kRRCenc_pP,
    u8                  *kRRCint_pP,
    u8                  *kUPenc_pP
620
#ifdef Rel10
gauthier's avatar
gauthier committed
621
,PMCH_InfoList_r9_t*  pmch_InfoList_r9_pP
622
#endif
gauthier's avatar
gauthier committed
623
)
624
{
625 626 627
  long int        rb_id          = 0;
  long int        lc_id          = 0;
  long int        srb_id         = 0;
628
  long int        mch_id         = 0;
629 630
  rlc_mode_t      rlc_type       = RLC_NONE;
  DRB_Identity_t  drb_id         = 0;
gauthier's avatar
gauthier committed
631
  DRB_Identity_t *pdrb_id_p      = NULL;
632 633 634 635
  u8              drb_sn         = 0;
  u8              srb_sn         = 5; // fixed sn for SRBs
  u8              drb_report     = 0;
  long int        cnt            = 0;
636
  u16 header_compression_profile = 0;
637
  u32 action                     = ACTION_ADD;
gauthier's avatar
gauthier committed
638 639 640 641
  SRB_ToAddMod_t *srb_toaddmod_p = NULL;
  DRB_ToAddMod_t *drb_toaddmod_p = NULL;
  pdcp_t         *pdcp_p         = NULL;
  module_id_t     module_id      = -1;
642 643 644

#ifdef Rel10
  int i,j;
gauthier's avatar
gauthier committed
645 646
  MBMS_SessionInfoList_r9_t *mbms_SessionInfoList_r9_p = NULL;
  MBMS_SessionInfo_r9_t     *MBMS_SessionInfo_p        = NULL;
647 648
#endif

gauthier's avatar
gauthier committed
649 650
  if (enb_flagP == 0) {
      LOG_D(PDCP, "[UE %d] CONFIG REQ ASN1 for eNB %d\n", ue_mod_idP, enb_mod_idP);
651
  } else {
gauthier's avatar
gauthier committed
652
      LOG_D(PDCP, "[eNB %d] CONFIG REQ ASN1 for UE %d\n", enb_mod_idP, ue_mod_idP);
653
  }
654 655
  // srb2add_list does not define pdcp config, we use rlc info to setup the pdcp dcch0 and dcch1 channels

gauthier's avatar
gauthier committed
656 657 658 659 660 661 662 663 664 665 666 667 668
  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;
          rb_id = srb_id;
          lc_id = srb_id;

          if (enb_flagP == 0) {
              pdcp_p = &pdcp_array_ue[ue_mod_idP][srb_id];
          } else {
              pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][srb_id];
          }
669

gauthier's avatar
gauthier committed
670 671 672 673 674
          if (pdcp_p->instanciated_instance == 1) {
              action = ACTION_MODIFY;
          } else {
              action = ACTION_ADD;
          }
675

gauthier's avatar
gauthier committed
676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712
          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
                      rlc_type,
                      action,
                      lc_id,
                      mch_id,
                      rb_id,
                      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;
              }
          }
713 714 715 716
      }
  }
  // reset the action

gauthier's avatar
gauthier committed
717 718
  if (drb2add_list_pP != NULL) {
      for (cnt=0;cnt<drb2add_list_pP->list.count;cnt++) {
719

gauthier's avatar
gauthier committed
720
          drb_toaddmod_p = drb2add_list_pP->list.array[cnt];
721

gauthier's avatar
gauthier committed
722
          drb_id = drb_toaddmod_p->drb_Identity;
723

gauthier's avatar
gauthier committed
724 725 726 727 728 729
          if (drb_toaddmod_p->logicalChannelIdentity != null) {
              lc_id = *drb_toaddmod_p->logicalChannelIdentity;
          } else {
              lc_id = -1;
          }
          rb_id = lc_id;
730

gauthier's avatar
gauthier committed
731
          DevCheck4(rb_id < NB_RB_MAX, rb_id, NB_RB_MAX, ue_mod_idP, enb_mod_idP);
732

gauthier's avatar
gauthier committed
733 734 735 736 737
          if (enb_flagP == 0) {
              pdcp_p = &pdcp_array_ue[ue_mod_idP][rb_id];
          } else {
              pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][rb_id];
          }
738

gauthier's avatar
gauthier committed
739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
          if (pdcp_p->instanciated_instance == 1)
            action = ACTION_MODIFY;
          else
            action = ACTION_ADD;

          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;
                  rlc_type =RLC_MODE_AM;
              }
              if (drb_toaddmod_p->pdcp_Config->rlc_UM){
                  drb_sn = drb_toaddmod_p->pdcp_Config->rlc_UM->pdcp_SN_Size;
                  rlc_type =RLC_MODE_UM;
              }
              switch (drb_toaddmod_p->pdcp_Config->headerCompression.present) {
              case PDCP_Config__headerCompression_PR_NOTHING:
              case PDCP_Config__headerCompression_PR_notUsed:
                header_compression_profile=0x0;
                break;
              case PDCP_Config__headerCompression_PR_rohc:
                // parse the struc and get the rohc profile
                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:
                LOG_W(PDCP,"[MOD_id %d][RB %d] unknown drb_toaddmod->PDCP_Config->headerCompression->present \n",
                    module_id, drb_id);
                break;
              }
              pdcp_config_req_asn1 (pdcp_p,
                  enb_mod_idP,
                  ue_mod_idP,
                  frameP,
                  enb_flagP, // not really required
                  rlc_type,
                  action,
                  lc_id,
                  mch_id,
                  rb_id,
                  drb_sn,
                  drb_report,
                  header_compression_profile,
                  security_modeP,
                  kRRCenc_pP,
                  kRRCint_pP,
                  kUPenc_pP);
809 810 811 812
          }
      }
  }

gauthier's avatar
gauthier committed
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
  if (drb2release_list_pP != NULL) {
      for (cnt=0;cnt<drb2release_list_pP->list.count;cnt++) {
          pdrb_id_p = drb2release_list_pP->list.array[cnt];
          rb_id =  *pdrb_id_p;
          if (enb_flagP == 0) {
              pdcp_p = &pdcp_array_ue[ue_mod_idP][rb_id];
          } else {
              pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][rb_id];
          }
          action = ACTION_REMOVE;
          pdcp_config_req_asn1 (pdcp_p,
              enb_mod_idP,
              ue_mod_idP,
              frameP,
              enb_flagP, // not really required
              rlc_type,
              action,
              lc_id,
              mch_id,
              rb_id,
              0,
              0,
              0,
              security_modeP,
              kRRCenc_pP,
              kRRCint_pP,
              kUPenc_pP);
840
      }
841 842 843
  }

#ifdef Rel10
844
  if (pmch_InfoList_r9 != NULL) {
gauthier's avatar
gauthier committed
845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882
      for (i=0;i<pmch_InfoList_r9->list.count;i++) {
          mbms_SessionInfoList_r9 = &(pmch_InfoList_r9->list.array[i]->mbms_SessionInfoList_r9);
          for (j=0;j<mbms_SessionInfoList_r9->list.count;j++) {
              MBMS_SessionInfo = mbms_SessionInfoList_r9->list.array[j];
              //lc_id = MBMS_SessionInfo->logicalChannelIdentity_r9; // lcid
              lc_id = MBMS_SessionInfo->sessionId_r9->buf[0];
              mch_id = MBMS_SessionInfo->tmgi_r9.serviceId_r9.buf[2]; //serviceId is 3-octet string

              // can set the mch_id = i
              if (eNB_flag)
                rb_id =  (mch_id * maxSessionPerPMCH ) + lc_id;
              else
                rb_id =  (mch_id * maxSessionPerPMCH ) + lc_id + (maxDRB + 3);

              if (pdcp_mbms_array[module_id][rb_id].instanciated_instance == module_id + 1)
                action = ACTION_MBMS_MODIFY;
              else
                action = ACTION_MBMS_ADD;

              rlc_type = RLC_MODE_UM;
              pdcp_config_req_asn1 (NULL,
                  enb_mod_idP,
                  ue_mod_idP,
                  frameP,
                  eNB_flag,
                  rlc_type,
                  action,
                  lc_id,
                  mch_id,
                  rb_id,
                  0, // set to deafult
                  0,
                  0,
                  security_mode,
                  kRRCenc,
                  kRRCint,
                  kUPenc);
          }
883 884 885 886 887 888 889 890
      }
  }
#endif

  return 1;

}

gauthier's avatar
gauthier committed
891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907
BOOL pdcp_config_req_asn1 (pdcp_t   *pdcp_pP,
    module_id_t     enb_mod_idP,
    module_id_t     ue_mod_idP,
    frame_t    frameP,
    eNB_flag_t enb_flagP,
    rlc_mode_t rlc_modeP,
    u32        actionP,
    u16        lc_idP,
    u16        mch_idP,
    rb_id_t    rb_idP,
    u8         rb_snP,
    u8         rb_reportP,
    u16        header_compression_profileP,
    u8         security_modeP,
    u8        *kRRCenc_pP,
    u8        *kRRCint_pP,
    u8        *kUPenc_pP)
908
{
909

gauthier's avatar
gauthier committed
910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925
  switch (actionP) {
  case ACTION_ADD:
    DevAssert(pdcp_pP != NULL);
    pdcp_pP->instanciated_instance = 1;
    pdcp_pP->is_ue = (enb_flagP == 0) ? 1 : 0;
    pdcp_pP->lcid = lc_idP;
    pdcp_pP->header_compression_profile = header_compression_profileP;
    pdcp_pP->status_report = rb_reportP;

    if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
        pdcp_pP->seq_num_size = 7;
    } else if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits) {
        pdcp_pP->seq_num_size=12;
    } else {
        pdcp_pP->seq_num_size=5;
    }
926

gauthier's avatar
gauthier committed
927 928 929 930 931 932 933 934 935
    pdcp_pP->rlc_mode = rlc_modeP;
    pdcp_pP->next_pdcp_tx_sn = 0;
    pdcp_pP->next_pdcp_rx_sn = 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;

    if (enb_flagP == 0) {
936
        LOG_I(PDCP, "[UE %d] Config request : Action ADD for eNB %d: Frame %d LCID %d (rb id %d) "
gauthier's avatar
gauthier committed
937 938 939 940
            "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,
            (rlc_modeP == 1) ? "AM" : (rlc_modeP == 2) ? "TM" : "UM");
    } else {
941
        LOG_I(PDCP, "[eNB %d] Config request : Action ADD for UE %d: Frame %d LCID %d (rb id %d) "
gauthier's avatar
gauthier committed
942 943 944 945
            "configured with SN size %d bits and RLC %s\n",
            enb_mod_idP, ue_mod_idP, frameP, lc_idP, rb_idP, pdcp_pP->seq_num_size,
            (rlc_modeP == 1) ? "AM" : (rlc_modeP == 2) ? "TM" : "UM");
    }
946

gauthier's avatar
gauthier committed
947 948 949 950
    /* Setup security */
    if (security_modeP != 0xff) {
        pdcp_config_set_security(pdcp_pP, enb_mod_idP, ue_mod_idP, frameP, enb_flagP, rb_idP, lc_idP, security_modeP, kRRCenc_pP, kRRCint_pP, kUPenc_pP);
    }
951

gauthier's avatar
gauthier committed
952 953
    LOG_D(PDCP, "[FRAME %5u][%s][PDCP][MOD %u/%u][RB %u]\n", frameP, (enb_flagP == 0) ? "UE" : "eNB",  enb_mod_idP, ue_mod_idP, rb_idP);
    break;
954

gauthier's avatar
gauthier committed
955 956 957 958 959
  case ACTION_MODIFY:
    DevAssert(pdcp_pP != NULL);
    pdcp_pP->header_compression_profile=header_compression_profileP;
    pdcp_pP->status_report = rb_reportP;
    pdcp_pP->rlc_mode = rlc_modeP;
960

gauthier's avatar
gauthier committed
961 962 963 964
    /* Setup security */
    if (security_modeP != 0xff) {
        pdcp_config_set_security(pdcp_pP, enb_mod_idP, ue_mod_idP, frameP, enb_flagP, rb_idP, lc_idP, security_modeP, kRRCenc_pP, kRRCint_pP, kUPenc_pP);
    }
965

gauthier's avatar
gauthier committed
966 967 968 969 970 971 972
    if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len7bits) {
        pdcp_pP->seq_num_size = 7;
    } else if (rb_snP == PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits) {
        pdcp_pP->seq_num_size = 12;
    } else {
        pdcp_pP->seq_num_size=5;
    }
973

gauthier's avatar
gauthier committed
974
    if (enb_flagP == 0) {
975
        LOG_I(PDCP,"[UE %d] Config request : Action MODIFY for eNB %d: Frame %d LCID %d "
gauthier's avatar
gauthier committed
976 977 978 979
            "RB id %d configured with SN size %d and RLC %s \n",
            ue_mod_idP, enb_mod_idP, frameP, lc_idP, rb_idP, rb_snP,
            (rlc_modeP == 1) ? "AM" : (rlc_modeP == 2) ? "TM" : "UM");
    } else {
980
        LOG_I(PDCP,"[eNB %d] Config request : Action MODIFY for UE %d: Frame %d LCID %d "
gauthier's avatar
gauthier committed
981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
            "RB id %d configured with SN size %d and RLC %s \n",
            enb_mod_idP, ue_mod_idP, frameP, lc_idP, rb_idP, rb_snP,
            (rlc_modeP == 1) ? "AM" : (rlc_modeP == 2) ? "TM" : "UM");
    }
    break;
  case ACTION_REMOVE:
    DevAssert(pdcp_pP != NULL);
    pdcp_pP->instanciated_instance = 0;
    pdcp_pP->lcid = 0;
    pdcp_pP->header_compression_profile = 0x0;
    pdcp_pP->cipheringAlgorithm = 0xff;
    pdcp_pP->integrityProtAlgorithm = 0xff;
    pdcp_pP->status_report = 0;
    pdcp_pP->rlc_mode = RLC_NONE;
    pdcp_pP->next_pdcp_tx_sn = 0;
    pdcp_pP->next_pdcp_rx_sn = 0;
    pdcp_pP->tx_hfn = 0;
    pdcp_pP->rx_hfn = 0;
    pdcp_pP->last_submitted_pdcp_rx_sn = 4095;
    pdcp_pP->seq_num_size = 0;
    pdcp_pP->first_missing_pdu = -1;
    pdcp_pP->security_activated = 0;

    if (enb_flagP == 0) {
1005
        LOG_I(PDCP, "[UE %d] Config request : ACTION_REMOVE for eNB %d: Frame %d LCID %d RBID %d configured\n",
gauthier's avatar
gauthier committed
1006 1007
            ue_mod_idP, enb_mod_idP, frameP, lc_idP, rb_idP);
    } else {
1008
        LOG_I(PDCP, "[eNB %d] Config request : ACTION_REMOVE for UE %d: Frame %d LCID %d RBID %d configured\n",
gauthier's avatar
gauthier committed
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024
            enb_mod_idP, ue_mod_idP, frameP, lc_idP, rb_idP);
    }
    /* Security keys */
    if (pdcp_pP->kUPenc != NULL) {
        free(pdcp_pP->kUPenc);
    }
    if (pdcp_pP->kRRCint != NULL) {
        free(pdcp_pP->kRRCint);
    }
    if (pdcp_pP->kRRCenc != NULL) {
        free(pdcp_pP->kRRCenc);
    }
    break;
  case ACTION_MBMS_ADD:
  case ACTION_MBMS_MODIFY:
    if (enb_flagP == 0) {
1025
        LOG_I(PDCP,"[UE %d] Config request for eNB %d: %s: Frame %d service_id/mch index %d, session_id/lcid %d, rbid %d configured\n",
gauthier's avatar
gauthier committed
1026 1027
            ue_mod_idP, enb_mod_idP, actionP == ACTION_MBMS_ADD ? "ACTION_MBMS_ADD" : "ACTION_MBMS_MODIFY", frameP, mch_idP, lc_idP, rb_idP);
    } else {
1028
        LOG_I(PDCP,"[eNB %d] Config request for UE %d: %s: Frame %d service_id/mch index %d, session_id/lcid %d, rbid %d configured\n",
gauthier's avatar
gauthier committed
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
            enb_mod_idP, ue_mod_idP, actionP == ACTION_MBMS_ADD ? "ACTION_MBMS_ADD" : "ACTION_MBMS_MODIFY", frameP, mch_idP, lc_idP, rb_idP);
    }
    if (enb_flagP == 1) {
        pdcp_mbms_array_eNB[enb_mod_idP][rb_idP].instanciated_instance = 1 ;
        pdcp_mbms_array_eNB[enb_mod_idP][rb_idP].service_id = mch_idP;
        pdcp_mbms_array_eNB[enb_mod_idP][rb_idP].session_id = lc_idP;
        pdcp_mbms_array_eNB[enb_mod_idP][rb_idP].rb_id = rb_idP;
    } else {
        pdcp_mbms_array_eNB[ue_mod_idP][rb_idP].instanciated_instance = 1 ;
        pdcp_mbms_array_eNB[ue_mod_idP][rb_idP].service_id = mch_idP;
        pdcp_mbms_array_eNB[ue_mod_idP][rb_idP].session_id = lc_idP;
        pdcp_mbms_array_eNB[ue_mod_idP][rb_idP].rb_id = rb_idP;
    }
    break;
  case ACTION_SET_SECURITY_MODE:
    pdcp_config_set_security(pdcp_pP, enb_mod_idP, ue_mod_idP, frameP, enb_flagP, rb_idP, lc_idP, security_modeP, kRRCenc_pP, kRRCint_pP, kUPenc_pP);
    break;
  default:
    DevParam(actionP, enb_mod_idP, ue_mod_idP);
    break;
1049 1050 1051
  }
  return 0;
}
1052

gauthier's avatar
gauthier committed
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
void pdcp_config_set_security(pdcp_t    *pdcp_pP,
    module_id_t     enb_mod_idP,
    module_id_t     ue_mod_idP,
    frame_t    frameP,
    eNB_flag_t eNB_flag,
    rb_id_t    rb_idP,
    u16        lc_idP,
    u8         security_modeP,
    u8        *kRRCenc,
    u8        *kRRCint,
    u8        *kUPenc)
1064
{
gauthier's avatar
gauthier committed
1065
  DevAssert(pdcp_pP != NULL);
1066

gauthier's avatar
gauthier committed
1067 1068 1069
  if ((security_modeP >= 0) && (security_modeP <= 0x77)) {
      pdcp_pP->cipheringAlgorithm     = security_modeP & 0x0f;
      pdcp_pP->integrityProtAlgorithm = (security_modeP>>4) & 0xf;
1070

gauthier's avatar
gauthier committed
1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082
      if (eNB_flag == 0) {
          LOG_D(PDCP,"[UE %d][RB %02d] Set security mode : ACTION_SET_SECURITY_MODE: "
              "Frame %d  cipheringAlgorithm %d integrityProtAlgorithm %d\n",
              ue_mod_idP, rb_idP, frameP, pdcp_pP->cipheringAlgorithm, pdcp_pP->integrityProtAlgorithm);
      } else {
          LOG_D(PDCP,"[eNB %d][UE %d][RB %02d] Set security mode : ACTION_SET_SECURITY_MODE: "
              "Frame %d  cipheringAlgorithm %d integrityProtAlgorithm %d\n",
              enb_mod_idP, ue_mod_idP, rb_idP, frameP, pdcp_pP->cipheringAlgorithm, pdcp_pP->integrityProtAlgorithm);
      }
      pdcp_pP->kRRCenc = kRRCenc;
      pdcp_pP->kRRCint = kRRCint;
      pdcp_pP->kUPenc  = kUPenc;
1083

gauthier's avatar
gauthier committed
1084 1085
      /* Activate security */
      pdcp_pP->security_activated = 1;
1086
  } else {
gauthier's avatar
gauthier committed
1087
      LOG_E(PDCP,"[%s %d] bad security mode %d", security_modeP);
1088
  }
1089 1090
}

gauthier's avatar
gauthier committed
1091
void rrc_pdcp_config_req (module_id_t enb_mod_idP, module_id_t ue_mod_idP, frame_t frameP, eNB_flag_t enb_flagP, u32 actionP, rb_id_t rb_idP, u8 security_modeP)
1092
{
gauthier's avatar
gauthier committed
1093
  pdcp_t *pdcp_p = NULL;
1094

gauthier's avatar
gauthier committed
1095 1096
  if (enb_mod_idP == 0) {
      pdcp_p = &pdcp_array_ue[ue_mod_idP][rb_idP];
1097
  } else {
gauthier's avatar
gauthier committed
1098
      pdcp_p = &pdcp_array_eNB[enb_mod_idP][ue_mod_idP][rb_idP];
1099
  }
1100 1101

  /*
gauthier's avatar
gauthier committed
1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
   * Initialize sequence number state variables of relevant PDCP entity
   */
  switch (actionP) {
  case ACTION_ADD:
    pdcp_p->instanciated_instance = 1;

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

    if (rb_idP < DTCH) { // SRB
        pdcp_p->seq_num_size = 5;
    } else { // DRB
        pdcp_p->seq_num_size = 12;
    }
    pdcp_p->first_missing_pdu = -1;
    LOG_D(PDCP,"[%s %d] Config request : Action ADD: Frame %d radio bearer id %d configured\n",
        (enb_flagP) ? "eNB" : "UE", (enb_flagP) ? enb_mod_idP : ue_mod_idP, frameP, rb_idP);
    break;
  case ACTION_MODIFY:
    break;
  case ACTION_REMOVE:
    pdcp_p->instanciated_instance = 0;
    pdcp_p->next_pdcp_tx_sn = 0;
    pdcp_p->next_pdcp_rx_sn = 0;
    pdcp_p->tx_hfn = 0;
    pdcp_p->rx_hfn = 0;
    pdcp_p->last_submitted_pdcp_rx_sn = 4095;
    pdcp_p->seq_num_size = 0;
    pdcp_p->first_missing_pdu = -1;
    pdcp_p->security_activated = 0;
    LOG_D(PDCP,"[%s %d] Config request : ACTION_REMOVE: Frame %d radio bearer id %d configured\n",
        (enb_flagP) ? "eNB" : "UE",  (enb_flagP) ? enb_mod_idP : ue_mod_idP, frameP, rb_idP);

    break;
  case ACTION_SET_SECURITY_MODE:
    if ((security_modeP >= 0) && (security_modeP <= 0x77)) {
        pdcp_p->cipheringAlgorithm= security_modeP & 0x0f;
        pdcp_p->integrityProtAlgorithm = (security_modeP>>4) & 0xf;
1144
        LOG_D(PDCP,"[%s %d]Set security mode : ACTION_SET_SECURITY_MODE: Frame %d  cipheringAlgorithm %d integrityProtAlgorithm %d\n",
gauthier's avatar
gauthier committed
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
            (enb_flagP) ? "eNB" : "UE",  (enb_flagP) ? enb_mod_idP : ue_mod_idP, frameP,
                pdcp_p->cipheringAlgorithm,
                pdcp_p->integrityProtAlgorithm );
    } else {
        LOG_D(PDCP,"[%s %d] bad security mode %d", security_modeP);
    }
    break;
  default:
    DevParam(actionP, ue_mod_idP, enb_mod_idP);
    break;
1155 1156 1157 1158
  }
}

// TODO PDCP module initialization code might be removed
gauthier's avatar
gauthier committed
1159
int pdcp_module_init (void) {
1160 1161 1162 1163 1164 1165 1166
  //-----------------------------------------------------------------------------
#ifdef NAS_FIFO
  int ret;

  ret=rtf_create(PDCP2NAS_FIFO,32768);

  if (ret < 0) {
gauthier's avatar
gauthier committed
1167
      LOG_E(PDCP, "Cannot create PDCP2NAS fifo %d (ERROR %d)\n", PDCP2NAS_FIFO, ret);
1168

gauthier's avatar
gauthier committed
1169
      return -1;
1170
  } else {
gauthier's avatar
gauthier committed
1171 1172
      LOG_D(PDCP, "Created PDCP2NAS fifo %d\n", PDCP2NAS_FIFO);
      rtf_reset(PDCP2NAS_FIFO);
1173 1174 1175 1176 1177
  }

  ret=rtf_create(NAS2PDCP_FIFO,32768);

  if (ret < 0) {
gauthier's avatar
gauthier committed
1178
      LOG_E(PDCP, "Cannot create NAS2PDCP fifo %d (ERROR %d)\n", NAS2PDCP_FIFO, ret);
1179

gauthier's avatar
gauthier committed
1180
      return -1;
1181
  } else {
gauthier's avatar
gauthier committed
1182 1183
      LOG_D(PDCP, "Created NAS2PDCP fifo %d\n", NAS2PDCP_FIFO);
      rtf_reset(NAS2PDCP_FIFO);
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
  }

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

  return 0;

}

//-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
1196 1197
void pdcp_module_cleanup (void)
//-----------------------------------------------------------------------------
1198 1199 1200 1201 1202 1203 1204 1205
{
#ifdef NAS_FIFO
  rtf_destroy(NAS2PDCP_FIFO);
  rtf_destroy(PDCP2NAS_FIFO);
#endif
}

//-----------------------------------------------------------------------------
1206
void pdcp_layer_init(void)
1207
{
gauthier's avatar
gauthier committed
1208 1209 1210 1211
  //-----------------------------------------------------------------------------
  module_id_t  instance, instance2;
  rb_id_t rb_id;
  int     j;
1212
  /*
gauthier's avatar
gauthier committed
1213 1214
   * Initialize SDU list
   */
1215 1216
  list_init(&pdcp_sdu_list, NULL);

gauthier's avatar
gauthier committed
1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
  for (instance = 0; instance < NUMBER_OF_UE_MAX; instance++) {
      for (rb_id = 0; rb_id < NB_RB_MAX; rb_id++) {
          memset(&pdcp_array_ue[instance][rb_id], 0, sizeof(pdcp_t));
      }
      for (j = 0; j < 16*29; j++) {
          memset(&pdcp_mbms_array_ue[instance][j], 0, sizeof(pdcp_mbms_t));
      }
  }
  for (instance = 0; instance < NUMBER_OF_eNB_MAX; instance++) {
      for (instance2 = 0; instance2 < NUMBER_OF_UE_MAX; instance2++) {
          for (rb_id = 0; rb_id < NB_RB_MAX; rb_id++) {
              memset(&pdcp_array_eNB[instance][instance2][rb_id], 0, sizeof(pdcp_t));
          }
      }
      for (j = 0; j < 16*29; j++) {
          memset(&pdcp_mbms_array_eNB[instance][j], 0, sizeof(pdcp_mbms_t));
      }
  }
1235 1236

  LOG_I(PDCP, "PDCP layer has been initialized\n");
1237

1238 1239 1240
  pdcp_output_sdu_bytes_to_write=0;
  pdcp_output_header_bytes_to_write=0;
  pdcp_input_sdu_remaining_size_to_read=0;
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250

  memset(Pdcp_stats_tx, 0, sizeof(Pdcp_stats_tx));
  memset(Pdcp_stats_tx_bytes, 0, sizeof(Pdcp_stats_tx_bytes));
  memset(Pdcp_stats_tx_bytes_last, 0, sizeof(Pdcp_stats_tx_bytes_last));
  memset(Pdcp_stats_tx_rate, 0, sizeof(Pdcp_stats_tx_rate));

  memset(Pdcp_stats_rx, 0, sizeof(Pdcp_stats_rx));
  memset(Pdcp_stats_rx_bytes, 0, sizeof(Pdcp_stats_rx_bytes));
  memset(Pdcp_stats_rx_bytes_last, 0, sizeof(Pdcp_stats_rx_bytes_last));
  memset(Pdcp_stats_rx_rate, 0, sizeof(Pdcp_stats_rx_rate));
1251 1252 1253
}

//-----------------------------------------------------------------------------
gauthier's avatar
gauthier committed
1254 1255
void pdcp_layer_cleanup (void)
//-----------------------------------------------------------------------------
1256 1257 1258 1259 1260 1261 1262
{
  list_free (&pdcp_sdu_list);
}

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