save commit

cmake_targets/CMakeLists.txt

@@ -1529,6 +1529,9 @@ set(NR_RLC_SRC
 
 set(NR_PDCP_SRC
   ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_oai_api.c
+  ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_ue_manager.c
+  ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_entity.c
+  ${OPENAIR2_DIR}/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.c
   )
 
 set(L2_SRC

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c

+/*
+ * 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 1.1  (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
+ */
+
+#include "nr_pdcp_entity.h"
+
+#include "nr_pdcp_entity_drb_am.h"
+
+#include "LOG/log.h"
+
+nr_pdcp_entity_t *new_nr_pdcp_entity_srb(
+    int rb_id,
+    void (*deliver_sdu)(void *deliver_sdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size),
+    void *deliver_sdu_data,
+    void (*deliver_pdu)(void *deliver_pdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size, int sdu_id),
+    void *deliver_pdu_data)
+{
+  abort();
+}
+
+nr_pdcp_entity_t *new_nr_pdcp_entity_drb_am(
+    int rb_id,
+    void (*deliver_sdu)(void *deliver_sdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size),
+    void *deliver_sdu_data,
+    void (*deliver_pdu)(void *deliver_pdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size, int sdu_id),
+    void *deliver_pdu_data)
+{
+  nr_pdcp_entity_drb_am_t *ret;
+
+  ret = calloc(1, sizeof(nr_pdcp_entity_drb_am_t));
+  if (ret == NULL) {
+    LOG_E(PDCP, "%s:%d:%s: out of memory\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  ret->common.recv_pdu          = nr_pdcp_entity_drb_am_recv_pdu;
+  ret->common.recv_sdu          = nr_pdcp_entity_drb_am_recv_sdu;
+  ret->common.set_integrity_key = nr_pdcp_entity_drb_am_set_integrity_key;
+
+  ret->common.delete = nr_pdcp_entity_drb_am_delete;
+
+  ret->common.deliver_sdu = deliver_sdu;
+  ret->common.deliver_sdu_data = deliver_sdu_data;
+
+  ret->common.deliver_pdu = deliver_pdu;
+  ret->common.deliver_pdu_data = deliver_pdu_data;
+
+  ret->rb_id = rb_id;
+
+  ret->common.maximum_nr_pdcp_sn = 4095;
+
+  return (nr_pdcp_entity_t *)ret;
+}

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.h

+/*
+ * 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 1.1  (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
+ */
+
+#ifndef _NR_PDCP_ENTITY_H_
+#define _NR_PDCP_ENTITY_H_
+
+typedef struct nr_pdcp_entity_t {
+  /* functions provided by the PDCP module */
+  void (*recv_pdu)(struct nr_pdcp_entity_t *entity, char *buffer, int size);
+  void (*recv_sdu)(struct nr_pdcp_entity_t *entity, char *buffer, int size,
+                   int sdu_id);
+  void (*delete)(struct nr_pdcp_entity_t *entity);
+  void (*set_integrity_key)(struct nr_pdcp_entity_t *entity, char *key);
+
+  /* callbacks provided to the PDCP module */
+  void (*deliver_sdu)(void *deliver_sdu_data, struct nr_pdcp_entity_t *entity,
+                      char *buf, int size);
+  void *deliver_sdu_data;
+  void (*deliver_pdu)(void *deliver_pdu_data, struct nr_pdcp_entity_t *entity,
+                      char *buf, int size, int sdu_id);
+  void *deliver_pdu_data;
+  int tx_hfn;
+  int next_nr_pdcp_tx_sn;
+  int maximum_nr_pdcp_sn;
+} nr_pdcp_entity_t;
+
+nr_pdcp_entity_t *new_nr_pdcp_entity_srb(
+    int rb_id,
+    void (*deliver_sdu)(void *deliver_sdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size),
+    void *deliver_sdu_data,
+    void (*deliver_pdu)(void *deliver_pdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size, int sdu_id),
+    void *deliver_pdu_data);
+
+nr_pdcp_entity_t *new_nr_pdcp_entity_drb_am(
+    int rb_id,
+    void (*deliver_sdu)(void *deliver_sdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size),
+    void *deliver_sdu_data,
+    void (*deliver_pdu)(void *deliver_pdu_data, struct nr_pdcp_entity_t *entity,
+                        char *buf, int size, int sdu_id),
+    void *deliver_pdu_data);
+
+#endif /* _NR_PDCP_ENTITY_H_ */

openair2/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.c

+/*
+ * 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 1.1  (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
+ */
+
+#include "nr_pdcp_entity_drb_am.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void nr_pdcp_entity_drb_am_recv_pdu(nr_pdcp_entity_t *_entity, char *buffer, int size)
+{
+  nr_pdcp_entity_drb_am_t *entity = (nr_pdcp_entity_drb_am_t *)_entity;
+
+  if (size < 3) abort();
+  if (!(buffer[0] & 0x80)) { printf("%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__); exit(1); }
+  entity->common.deliver_sdu(entity->common.deliver_sdu_data,
+                             (nr_pdcp_entity_t *)entity, buffer+2, size-2);
+}
+
+void nr_pdcp_entity_drb_am_recv_sdu(nr_pdcp_entity_t *_entity, char *buffer, int size,
+                              int sdu_id)
+{
+  nr_pdcp_entity_drb_am_t *entity = (nr_pdcp_entity_drb_am_t *)_entity;
+  int sn;
+  char buf[size+2];
+
+  sn = entity->common.next_nr_pdcp_tx_sn;
+
+  entity->common.next_nr_pdcp_tx_sn++;
+  if (entity->common.next_nr_pdcp_tx_sn > entity->common.maximum_nr_pdcp_sn) {
+    entity->common.next_nr_pdcp_tx_sn = 0;
+    entity->common.tx_hfn++;
+  }
+
+  buf[0] = 0x80 | ((sn >> 8) & 0x0f);
+  buf[1] = sn & 0xff;
+  memcpy(buf+2, buffer, size);
+
+  entity->common.deliver_pdu(entity->common.deliver_pdu_data,
+                             (nr_pdcp_entity_t *)entity, buf, size+2, sdu_id);
+}
+
+void nr_pdcp_entity_drb_am_set_integrity_key(nr_pdcp_entity_t *_entity, char *key)
+{
+  /* nothing to do */
+}
+
+void nr_pdcp_entity_drb_am_delete(nr_pdcp_entity_t *_entity)
+{
+  nr_pdcp_entity_drb_am_t *entity = (nr_pdcp_entity_drb_am_t *)_entity;
+  free(entity);
+}

openair2/LAYER2/nr_pdcp/nr_pdcp_entity_drb_am.h

+/*
+ * 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 1.1  (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
+ */
+
+#ifndef _NR_PDCP_ENTITY_DRB_AM_H_
+#define _NR_PDCP_ENTITY_DRB_AM_H_
+
+#include "nr_pdcp_entity.h"
+
+typedef struct {
+  nr_pdcp_entity_t common;
+  int rb_id;
+} nr_pdcp_entity_drb_am_t;
+
+void nr_pdcp_entity_drb_am_recv_pdu(nr_pdcp_entity_t *entity, char *buffer, int size);
+void nr_pdcp_entity_drb_am_recv_sdu(nr_pdcp_entity_t *entity, char *buffer, int size,
+                                    int sdu_id);
+void nr_pdcp_entity_drb_am_set_integrity_key(nr_pdcp_entity_t *entity, char *key);
+void nr_pdcp_entity_drb_am_delete(nr_pdcp_entity_t *entity);
+
+#endif /* _NR_PDCP_ENTITY_DRB_AM_H_ */

openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c

@@ -19,6 +19,8 @@
  *      contact@openairinterface.org
  */
 
+#include "nr_pdcp_ue_manager.h"
+
 /* from OAI */
 #include "pdcp.h"
 
@@ -27,12 +29,120 @@
     exit(1); \
   } while (0)
 
+static nr_pdcp_ue_manager_t *nr_pdcp_ue_manager;
+
 /* necessary globals for OAI, not used internally */
 hash_table_t  *pdcp_coll_p;
+static uint64_t pdcp_optmask;
+
+/****************************************************************************/
+/* rlc_data_req queue - begin                                               */
+/****************************************************************************/
+
+static void init_nr_rlc_data_req_queue(void)
+{
+}
+
+/****************************************************************************/
+/* rlc_data_req queue - end                                                 */
+/****************************************************************************/
+
+#include "LAYER2/MAC/mac_extern.h"
 
 void nr_ip_over_LTE_DRB_preconfiguration(void)
 {
-  TODO;
+          // Addition for the use-case of 4G stack on top of 5G-NR.
+          // We need to configure pdcp and rlc instances without having an actual
+          // UE RRC Connection. In order to be able to test the NR PHY with some injected traffic
+          // on top of the LTE stack.
+          protocol_ctxt_t ctxt;
+          LTE_DRB_ToAddModList_t*                DRB_configList=NULL;
+          DRB_configList = CALLOC(1, sizeof(LTE_DRB_ToAddModList_t));
+          struct LTE_LogicalChannelConfig        *DRB_lchan_config                                 = NULL;
+          struct LTE_RLC_Config                  *DRB_rlc_config                   = NULL;
+          struct LTE_PDCP_Config                 *DRB_pdcp_config                  = NULL;
+          struct LTE_PDCP_Config__rlc_UM         *PDCP_rlc_UM                      = NULL;
+
+          struct LTE_DRB_ToAddMod                *DRB_config                       = NULL;
+          struct LTE_LogicalChannelConfig__ul_SpecificParameters *DRB_ul_SpecificParameters        = NULL;
+          long  *logicalchannelgroup_drb;
+
+
+          //Static preconfiguration of DRB
+          DRB_config = CALLOC(1, sizeof(*DRB_config));
+
+          DRB_config->eps_BearerIdentity = CALLOC(1, sizeof(long));
+          // allowed value 5..15, value : x+4
+          *(DRB_config->eps_BearerIdentity) = 1; //ue_context_pP->ue_context.e_rab[i].param.e_rab_id;//+ 4; // especial case generation
+          //   DRB_config->drb_Identity =  1 + drb_identity_index + e_rab_done;// + i ;// (DRB_Identity_t) ue_context_pP->ue_context.e_rab[i].param.e_rab_id;
+          // 1 + drb_identiy_index;
+          DRB_config->drb_Identity = 1;
+          DRB_config->logicalChannelIdentity = CALLOC(1, sizeof(long));
+          *(DRB_config->logicalChannelIdentity) = DRB_config->drb_Identity + 2; //(long) (ue_context_pP->ue_context.e_rab[i].param.e_rab_id + 2); // value : x+2
+
+          DRB_rlc_config = CALLOC(1, sizeof(*DRB_rlc_config));
+          DRB_config->rlc_Config = DRB_rlc_config;
+
+          DRB_pdcp_config = CALLOC(1, sizeof(*DRB_pdcp_config));
+          DRB_config->pdcp_Config = DRB_pdcp_config;
+          DRB_pdcp_config->discardTimer = CALLOC(1, sizeof(long));
+          *DRB_pdcp_config->discardTimer = LTE_PDCP_Config__discardTimer_infinity;
+          DRB_pdcp_config->rlc_AM = NULL;
+          DRB_pdcp_config->rlc_UM = NULL;
+
+          DRB_rlc_config->present = LTE_RLC_Config_PR_um_Bi_Directional;
+          DRB_rlc_config->choice.um_Bi_Directional.ul_UM_RLC.sn_FieldLength = LTE_SN_FieldLength_size10;
+          DRB_rlc_config->choice.um_Bi_Directional.dl_UM_RLC.sn_FieldLength = LTE_SN_FieldLength_size10;
+          DRB_rlc_config->choice.um_Bi_Directional.dl_UM_RLC.t_Reordering = LTE_T_Reordering_ms35;
+          // PDCP
+          PDCP_rlc_UM = CALLOC(1, sizeof(*PDCP_rlc_UM));
+          DRB_pdcp_config->rlc_UM = PDCP_rlc_UM;
+          PDCP_rlc_UM->pdcp_SN_Size = LTE_PDCP_Config__rlc_UM__pdcp_SN_Size_len12bits;
+
+          DRB_pdcp_config->headerCompression.present = LTE_PDCP_Config__headerCompression_PR_notUsed;
+
+          DRB_lchan_config = CALLOC(1, sizeof(*DRB_lchan_config));
+          DRB_config->logicalChannelConfig = DRB_lchan_config;
+          DRB_ul_SpecificParameters = CALLOC(1, sizeof(*DRB_ul_SpecificParameters));
+          DRB_lchan_config->ul_SpecificParameters = DRB_ul_SpecificParameters;
+
+          DRB_ul_SpecificParameters->priority= 4;
+
+          DRB_ul_SpecificParameters->prioritisedBitRate = LTE_LogicalChannelConfig__ul_SpecificParameters__prioritisedBitRate_kBps8;
+          //LogicalChannelConfig__ul_SpecificParameters__prioritisedBitRate_infinity;
+          DRB_ul_SpecificParameters->bucketSizeDuration =
+          LTE_LogicalChannelConfig__ul_SpecificParameters__bucketSizeDuration_ms50;
+
+          logicalchannelgroup_drb = CALLOC(1, sizeof(long));
+          *logicalchannelgroup_drb = 1;//(i+1) % 3;
+          DRB_ul_SpecificParameters->logicalChannelGroup = logicalchannelgroup_drb;
+
+          ASN_SEQUENCE_ADD(&DRB_configList->list,DRB_config);
+
+          if (ENB_NAS_USE_TUN){
+                  PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, ENB_FLAG_YES, 0x1234, 0, 0,0);
+          }
+          else{
+                  PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, ENB_FLAG_NO, 0x1234, 0, 0,0);
+          }
+
+          rrc_pdcp_config_asn1_req(&ctxt,
+                       (LTE_SRB_ToAddModList_t *) NULL,
+                       DRB_configList,
+                       (LTE_DRB_ToReleaseList_t *) NULL,
+                       0xff, NULL, NULL, NULL
+                       , (LTE_PMCH_InfoList_r9_t *) NULL,
+                       &DRB_config->drb_Identity);
+
+        rrc_rlc_config_asn1_req(&ctxt,
+                       (LTE_SRB_ToAddModList_t*)NULL,
+                       DRB_configList,
+                       (LTE_DRB_ToReleaseList_t*)NULL
+        //#if (RRC_VERSION >= MAKE_VERSION(10, 0, 0))
+                       ,(LTE_PMCH_InfoList_r9_t *)NULL
+                       , 0, 0
+        //#endif
+                 );
 }
 
 int pdcp_fifo_flush_sdus(const protocol_ctxt_t *const ctxt_pP)
@@ -43,13 +153,35 @@ int pdcp_fifo_flush_sdus(const protocol_ctxt_t *const ctxt_pP)
 
 void pdcp_layer_init(void)
 {
-  TODO;
+  /* be sure to initialize only once */
+  static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
+  static int initialized = 0;
+  if (pthread_mutex_lock(&m) != 0) abort();
+  if (initialized) {
+    if (pthread_mutex_unlock(&m) != 0) abort();
+    return;
+  }
+  initialized = 1;
+  if (pthread_mutex_unlock(&m) != 0) abort();
+
+  nr_pdcp_ue_manager = new_nr_pdcp_ue_manager(1);
+  init_nr_rlc_data_req_queue();
 }
 
 uint64_t pdcp_module_init(uint64_t _pdcp_optmask)
 {
-  TODO;
-  return _pdcp_optmask;
+  pdcp_optmask = _pdcp_optmask;
+  return pdcp_optmask;
+}
+
+static void deliver_sdu_drb(void *_ue, nr_pdcp_entity_t *entity,
+                            char *buf, int size)
+{
+}
+
+static void deliver_pdu_drb(void *_ue, nr_pdcp_entity_t *entity,
+                            char *buf, int size, int sdu_id)
+{
 }
 
 boolean_t pdcp_data_ind(
@@ -65,10 +197,100 @@ boolean_t pdcp_data_ind(
 }
 
 void pdcp_run(const protocol_ctxt_t *const  ctxt_pP)
+{
+  MessageDef      *msg_p;
+  int             result;
+  protocol_ctxt_t ctxt;
+
+  while (1) {
+    itti_poll_msg(ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE, &msg_p);
+    if (msg_p == NULL)
+      break;
+    switch (ITTI_MSG_ID(msg_p)) {
+    case RRC_DCCH_DATA_REQ:
+      PROTOCOL_CTXT_SET_BY_MODULE_ID(
+          &ctxt,
+          RRC_DCCH_DATA_REQ(msg_p).module_id,
+          RRC_DCCH_DATA_REQ(msg_p).enb_flag,
+          RRC_DCCH_DATA_REQ(msg_p).rnti,
+          RRC_DCCH_DATA_REQ(msg_p).frame,
+          0,
+          RRC_DCCH_DATA_REQ(msg_p).eNB_index);
+      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,
+                             NULL, NULL);
+
+      if (result != TRUE)
+        LOG_E(PDCP, "PDCP data request failed!\n");
+      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", ITTI_MSG_NAME(msg_p));
+      break;
+    }
+  }
+}
+
+static void add_srb(int rnti, struct LTE_SRB_ToAddMod *s)
 {
   TODO;
 }
 
+static void add_drb_am(int rnti, struct LTE_DRB_ToAddMod *s)
+{
+  nr_pdcp_entity_t *pdcp_drb;
+  nr_pdcp_ue_t *ue;
+
+  int drb_id = s->drb_Identity;
+
+printf("\n\n################# add drb %d\n\n\n", drb_id);
+
+  if (drb_id != 1) {
+    LOG_E(PDCP, "%s:%d:%s: fatal, bad drb id %d\n",
+          __FILE__, __LINE__, __FUNCTION__, drb_id);
+    exit(1);
+  }
+
+  nr_pdcp_manager_lock(nr_pdcp_ue_manager);
+  ue = nr_pdcp_manager_get_ue(nr_pdcp_ue_manager, rnti);
+  if (ue->drb[drb_id-1] != NULL) {
+    LOG_D(PDCP, "%s:%d:%s: warning DRB %d already exist for ue %d, do nothing\n",
+          __FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
+  } else {
+    pdcp_drb = new_nr_pdcp_entity_drb_am(drb_id, deliver_sdu_drb, ue, deliver_pdu_drb, ue);
+    nr_pdcp_ue_add_drb_pdcp_entity(ue, drb_id, pdcp_drb);
+
+    LOG_D(PDCP, "%s:%d:%s: added drb %d to ue %d\n",
+          __FILE__, __LINE__, __FUNCTION__, drb_id, rnti);
+  }
+  nr_pdcp_manager_unlock(nr_pdcp_ue_manager);
+}
+
+static void add_drb(int rnti, struct LTE_DRB_ToAddMod *s)
+{
+  switch (s->rlc_Config->present) {
+  case LTE_RLC_Config_PR_am:
+    add_drb_am(rnti, s);
+    break;
+  case LTE_RLC_Config_PR_um_Bi_Directional:
+    //add_drb_um(rnti, s);
+    /* hack */
+    add_drb_am(rnti, s);
+    break;
+  default:
+    LOG_E(PDCP, "%s:%d:%s: fatal: unhandled DRB type\n",
+          __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+}
+
 boolean_t rrc_pdcp_config_asn1_req(
   const protocol_ctxt_t *const  ctxt_pP,
   LTE_SRB_ToAddModList_t  *const srb2add_list,
@@ -83,13 +305,53 @@ boolean_t rrc_pdcp_config_asn1_req(
 #endif
   ,rb_id_t                 *const defaultDRB)
 {
-  TODO;
+  int rnti = ctxt_pP->rnti;
+  int i;
+
+  if (ctxt_pP->enb_flag != 1 ||
+      ctxt_pP->module_id != 0 ||
+      ctxt_pP->instance != 0 ||
+      ctxt_pP->eNB_index != 0 ||
+      //ctxt_pP->configured != 2 ||
+      //srb2add_list == NULL ||
+      //drb2add_list != NULL ||
+      drb2release_list != NULL ||
+      security_modeP != 255 ||
+      //kRRCenc != NULL ||
+      //kRRCint != NULL ||
+      //kUPenc != NULL ||
+      pmch_InfoList_r9 != NULL /*||
+      defaultDRB != NULL */) {
+    TODO;
+  }
+
+  if (srb2add_list != NULL) {
+    for (i = 0; i < srb2add_list->list.count; i++) {
+      add_srb(rnti, srb2add_list->list.array[i]);
+    }
+  }
+
+  if (drb2add_list != NULL) {
+    for (i = 0; i < drb2add_list->list.count; i++) {
+      add_drb(rnti, drb2add_list->list.array[i]);
+    }
+  }
+
+  /* update security */
+  if (kRRCint != NULL) {
+    /* todo */
+  }
+
+  free(kRRCenc);
+  free(kRRCint);
+  free(kUPenc);
+
   return 0;
 }
 
 uint64_t get_pdcp_optmask(void)
 {
-  TODO;
+  return pdcp_optmask;
 }
 
 boolean_t pdcp_remove_UE(

openair2/LAYER2/nr_pdcp/nr_pdcp_ue_manager.c

+/*
+ * 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 1.1  (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
+ */
+
+#include "nr_pdcp_ue_manager.h"
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "LOG/log.h"
+
+typedef struct {
+  pthread_mutex_t lock;
+  nr_pdcp_ue_t    **ue_list;
+  int             ue_count;
+  int             enb_flag;
+} nr_pdcp_ue_manager_internal_t;
+
+nr_pdcp_ue_manager_t *new_nr_pdcp_ue_manager(int enb_flag)
+{
+  nr_pdcp_ue_manager_internal_t *ret;
+
+  ret = calloc(1, sizeof(nr_pdcp_ue_manager_internal_t));
+  if (ret == NULL) {
+    LOG_E(PDCP, "%s:%d:%s: out of memory\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  if (pthread_mutex_init(&ret->lock, NULL)) abort();
+  ret->enb_flag = enb_flag;
+
+  return ret;
+}
+
+int nr_pdcp_manager_get_enb_flag(nr_pdcp_ue_manager_t *_m)
+{
+  nr_pdcp_ue_manager_internal_t *m = _m;
+  return m->enb_flag;
+}
+
+void nr_pdcp_manager_lock(nr_pdcp_ue_manager_t *_m)
+{
+  nr_pdcp_ue_manager_internal_t *m = _m;
+  if (pthread_mutex_lock(&m->lock)) {
+    LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+}
+
+void nr_pdcp_manager_unlock(nr_pdcp_ue_manager_t *_m)
+{
+  nr_pdcp_ue_manager_internal_t *m = _m;
+  if (pthread_mutex_unlock(&m->lock)) {
+    LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+}
+
+/* must be called with lock acquired */
+nr_pdcp_ue_t *nr_pdcp_manager_get_ue(nr_pdcp_ue_manager_t *_m, int rnti)
+{
+  /* TODO: optimze */
+  nr_pdcp_ue_manager_internal_t *m = _m;
+  int i;
+
+  for (i = 0; i < m->ue_count; i++)
+    if (m->ue_list[i]->rnti == rnti)
+      return m->ue_list[i];
+
+  LOG_D(PDCP, "%s:%d:%s: new UE %d\n", __FILE__, __LINE__, __FUNCTION__, rnti);
+
+  m->ue_count++;
+  m->ue_list = realloc(m->ue_list, sizeof(nr_pdcp_ue_t *) * m->ue_count);
+  if (m->ue_list == NULL) {
+    LOG_E(PDCP, "%s:%d:%s: out of memory\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+  m->ue_list[m->ue_count-1] = calloc(1, sizeof(nr_pdcp_ue_t));
+  if (m->ue_list[m->ue_count-1] == NULL) {
+    LOG_E(PDCP, "%s:%d:%s: out of memory\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  m->ue_list[m->ue_count-1]->rnti = rnti;
+
+  return m->ue_list[m->ue_count-1];
+}
+
+/* must be called with lock acquired */
+void nr_pdcp_manager_remove_ue(nr_pdcp_ue_manager_t *_m, int rnti)
+{
+  nr_pdcp_ue_manager_internal_t *m = _m;
+  nr_pdcp_ue_t *ue;
+  int i;
+  int j;
+
+  for (i = 0; i < m->ue_count; i++)
+    if (m->ue_list[i]->rnti == rnti)
+      break;
+
+  if (i == m->ue_count) {
+    LOG_D(PDCP, "%s:%d:%s: warning: ue %d not found\n",
+          __FILE__, __LINE__, __FUNCTION__,
+          rnti);
+    return;
+  }
+
+  ue = m->ue_list[i];
+
+  for (j = 0; j < 2; j++)
+    if (ue->srb[j] != NULL)
+      ue->srb[j]->delete(ue->srb[j]);
+
+  for (j = 0; j < 5; j++)
+    if (ue->drb[j] != NULL)
+      ue->drb[j]->delete(ue->drb[j]);
+
+  free(ue);
+
+  m->ue_count--;
+  if (m->ue_count == 0) {
+    free(m->ue_list);
+    m->ue_list = NULL;
+    return;
+  }
+
+  memmove(&m->ue_list[i], &m->ue_list[i+1],
+          (m->ue_count - i) * sizeof(nr_pdcp_ue_t *));
+  m->ue_list = realloc(m->ue_list, m->ue_count * sizeof(nr_pdcp_ue_t *));
+  if (m->ue_list == NULL) {
+    LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+}
+
+/* must be called with lock acquired */
+void nr_pdcp_ue_add_srb_pdcp_entity(nr_pdcp_ue_t *ue, int srb_id, nr_pdcp_entity_t *entity)
+{
+  if (srb_id < 1 || srb_id > 2) {
+    LOG_E(PDCP, "%s:%d:%s: fatal, bad srb id\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  srb_id--;
+
+  if (ue->srb[srb_id] != NULL) {
+    LOG_E(PDCP, "%s:%d:%s: fatal, srb already present\n",
+          __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  ue->srb[srb_id] = entity;
+}
+
+/* must be called with lock acquired */
+void nr_pdcp_ue_add_drb_pdcp_entity(nr_pdcp_ue_t *ue, int drb_id, nr_pdcp_entity_t *entity)
+{
+  if (drb_id < 1 || drb_id > 5) {
+    LOG_E(PDCP, "%s:%d:%s: fatal, bad drb id\n", __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  drb_id--;
+
+  if (ue->drb[drb_id] != NULL) {
+    LOG_E(PDCP, "%s:%d:%s: fatal, drb already present\n",
+          __FILE__, __LINE__, __FUNCTION__);
+    exit(1);
+  }
+
+  ue->drb[drb_id] = entity;
+}

openair2/LAYER2/nr_pdcp/nr_pdcp_ue_manager.h

+/*
+ * 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 1.1  (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
+ */
+
+#ifndef _NR_PDCP_UE_MANAGER_H_
+#define _NR_PDCP_UE_MANAGER_H_
+
+#include "nr_pdcp_entity.h"
+
+typedef void nr_pdcp_ue_manager_t;
+
+typedef struct nr_pdcp_ue_t {
+  int rnti;
+  nr_pdcp_entity_t *srb[2];
+  nr_pdcp_entity_t *drb[5];
+} nr_pdcp_ue_t;
+
+/***********************************************************************/
+/* manager functions                                                   */
+/***********************************************************************/
+
+nr_pdcp_ue_manager_t *new_nr_pdcp_ue_manager(int enb_flag);
+
+int nr_pdcp_manager_get_enb_flag(nr_pdcp_ue_manager_t *m);
+
+void nr_pdcp_manager_lock(nr_pdcp_ue_manager_t *m);
+void nr_pdcp_manager_unlock(nr_pdcp_ue_manager_t *m);
+
+nr_pdcp_ue_t *nr_pdcp_manager_get_ue(nr_pdcp_ue_manager_t *m, int rnti);
+void nr_pdcp_manager_remove_ue(nr_pdcp_ue_manager_t *m, int rnti);
+
+/***********************************************************************/
+/* ue functions                                                        */
+/***********************************************************************/
+
+void nr_pdcp_ue_add_srb_pdcp_entity(nr_pdcp_ue_t *ue, int srb_id,
+                                    nr_pdcp_entity_t *entity);
+void nr_pdcp_ue_add_drb_pdcp_entity(nr_pdcp_ue_t *ue, int drb_id,
+                                    nr_pdcp_entity_t *entity);
+
+#endif /* _NR_PDCP_UE_MANAGER_H_ */