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openairinterface5g/openair2/RRC/NR/rrc_gNB.c
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/*
* 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
*/
/*! \file rrc_gNB.c
* \brief rrc procedures for gNB
* \author Navid Nikaein and Raymond Knopp , WEI-TAI CHEN
* \date 2011 - 2014 , 2018
* \version 1.0
* \company Eurecom, NTUST
* \email: navid.nikaein@eurecom.fr and raymond.knopp@eurecom.fr, kroempa@gmail.com
*/
#define RRC_GNB_C
#define RRC_GNB_C
#include "nr_rrc_config.h"
#include "nr_rrc_defs.h"
#include "nr_rrc_extern.h"
#include "assertions.h"
#include "common/ran_context.h"
#include "asn1_conversions.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "LAYER2/RLC/rlc.h"
#include "LAYER2/NR_MAC_gNB/mac_proto.h"
#include "common/utils/LOG/log.h"
#include "COMMON/mac_rrc_primitives.h"
#include "RRC/NR/MESSAGES/asn1_msg.h"
#include "NR_BCCH-BCH-Message.h"
#include "NR_UL-DCCH-Message.h"
#include "NR_DL-DCCH-Message.h"
#include "NR_CellGroupConfig.h"
#include "NR_MeasResults.h"
#include "LTE_UECapabilityInformation.h"
#include "LTE_UL-DCCH-Message.h"
#include "rlc.h"
#include "rrc_eNB_UE_context.h"
#include "platform_types.h"
#include "msc.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "T.h"
#include "RRC/NAS/nas_config.h"
#include "RRC/NAS/rb_config.h"
#include "OCG.h"
#include "OCG_extern.h"
#if defined(ENABLE_SECURITY)
#include "UTIL/OSA/osa_defs.h"
#endif
# include "rrc_eNB_S1AP.h"
# include "rrc_eNB_GTPV1U.h"
#include "pdcp.h"
#include "gtpv1u_eNB_task.h"
# include "intertask_interface.h"
#include "SIMULATION/TOOLS/sim.h" // for taus
//#define XER_PRINT
extern RAN_CONTEXT_t RC;
mui_t rrc_gNB_mui = 0;
///---------------------------------------------------------------------------------------------------------------///
///---------------------------------------------------------------------------------------------------------------///
void openair_nr_rrc_on(const protocol_ctxt_t *const ctxt_pP) {
LOG_I(NR_RRC, PROTOCOL_NR_RRC_CTXT_FMT" gNB:OPENAIR NR RRC IN....\n",PROTOCOL_NR_RRC_CTXT_ARGS(ctxt_pP));
rrc_config_nr_buffer (&RC.nrrrc[ctxt_pP->module_id]->carrier.SI, BCCH, 1);
RC.nrrrc[ctxt_pP->module_id]->carrier.SI.Active = 1;
rrc_config_nr_buffer (&RC.nrrrc[ctxt_pP->module_id]->carrier.Srb0, CCCH, 1);
RC.nrrrc[ctxt_pP->module_id]->carrier.Srb0.Active = 1;
}
///---------------------------------------------------------------------------------------------------------------///
///---------------------------------------------------------------------------------------------------------------///
void rrc_gNB_process_SgNBAdditionRequest(
const protocol_ctxt_t *const ctxt_pP,
rrc_gNB_ue_context_t *ue_context_pP
) {
rrc_gNB_generate_SgNBAdditionRequestAcknowledge(ctxt_pP,ue_context_pP);
}
void rrc_gNB_generate_SgNBAdditionRequestAcknowledge(
const protocol_ctxt_t *const ctxt_pP,
rrc_gNB_ue_context_t *const ue_context_pP) {
//uint8_t size;
//uint8_t buffer[100];
//int CC_id = ue_context_pP->ue_context.primaryCC_id;
//OCTET_STRING_t *secondaryCellGroup;
NR_CellGroupConfig_t *cellGroupconfig;
struct NR_CellGroupConfig__rlc_BearerToAddModList *rlc_BearerToAddModList;
struct NR_MAC_CellGroupConfig *mac_CellGroupConfig;
struct NR_PhysicalCellGroupConfig *physicalCellGroupConfig;
struct NR_SpCellConfig *spCellConfig;
//struct NR_CellGroupConfig__sCellToAddModList *sCellToAddModList;
cellGroupconfig = CALLOC(1,sizeof(NR_CellGroupConfig_t));
cellGroupconfig->rlc_BearerToAddModList = CALLOC(1,sizeof(struct NR_CellGroupConfig__rlc_BearerToAddModList));
cellGroupconfig->mac_CellGroupConfig = CALLOC(1,sizeof(struct NR_MAC_CellGroupConfig));
cellGroupconfig->physicalCellGroupConfig = CALLOC(1,sizeof(struct NR_PhysicalCellGroupConfig));
cellGroupconfig->spCellConfig = CALLOC(1,sizeof(struct NR_SpCellConfig));
//cellGroupconfig->sCellToAddModList = CALLOC(1,sizeof(struct NR_CellGroupConfig__sCellToAddModList));
rlc_BearerToAddModList = cellGroupconfig->rlc_BearerToAddModList;
mac_CellGroupConfig = cellGroupconfig->mac_CellGroupConfig;
physicalCellGroupConfig = cellGroupconfig->physicalCellGroupConfig;
spCellConfig = cellGroupconfig->spCellConfig;
//sCellToAddModList = cellGroupconfig->sCellToAddModList;
rlc_bearer_config_t *rlc_config;
rlc_config = CALLOC(1,sizeof(rlc_bearer_config_t));
//Fill rlc_bearer config value
rrc_config_rlc_bearer(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
rlc_config
);
//Fill rlc_bearer config to structure
do_RLC_BEARER(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
rlc_BearerToAddModList,
rlc_config);
mac_cellgroup_t *mac_cellgroup_config;
mac_cellgroup_config = CALLOC(1,sizeof(mac_cellgroup_t));
//Fill mac_cellgroup_config config value
rrc_config_mac_cellgroup(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
mac_cellgroup_config
);
//Fill mac_cellgroup config to structure
do_MAC_CELLGROUP(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
mac_CellGroupConfig,
mac_cellgroup_config);
physicalcellgroup_t *physicalcellgroup_config;
physicalcellgroup_config = CALLOC(1,sizeof(physicalcellgroup_t));
//Fill physicalcellgroup_config config value
rrc_config_physicalcellgroup(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
physicalcellgroup_config
);
//Fill physicalcellgroup config to structure
do_PHYSICALCELLGROUP(ctxt_pP->module_id,
ue_context_pP->ue_context.primaryCC_id,
physicalCellGroupConfig,
physicalcellgroup_config);
do_SpCellConfig(RC.nrrrc[ctxt_pP->module_id],
spCellConfig);
}
///---------------------------------------------------------------------------------------------------------------///
///---------------------------------------------------------------------------------------------------------------///
extern int phy_test;
static void init_NR_SI(gNB_RRC_INST *rrc) {
LOG_D(RRC,"%s()\n\n\n\n",__FUNCTION__);
rrc->carrier.MIB = (uint8_t*) malloc16(4);
rrc->carrier.sizeof_MIB = do_MIB_NR(rrc,0);
LOG_I(NR_RRC,"Done init_NR_SI\n");
rrc_mac_config_req_gNB(rrc->module_id,
rrc->carrier.ssb_SubcarrierOffset,
rrc->carrier.pdsch_AntennaPorts,
(NR_ServingCellConfigCommon_t *)rrc->carrier.servingcellconfigcommon,
0,
0,
(NR_CellGroupConfig_t *)NULL
);
if (phy_test > 0) {
// This is for phytest only, emulate first X2 message if uecap.raw file is present
FILE *fd;
fd = fopen("uecap.raw","r");
if (fd != NULL) {
char buffer[4096];
int msg_len=fread(buffer,1,4096,fd);
LOG_I(RRC,"Read in %d bytes for uecap\n",msg_len);
LTE_UL_DCCH_Message_t *LTE_UL_DCCH_Message;
asn_dec_rval_t dec_rval = uper_decode_complete( NULL,
&asn_DEF_LTE_UL_DCCH_Message,
(void **)&LTE_UL_DCCH_Message,
(uint8_t *)buffer,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
AssertFatal(1==0,"NR_UL_DCCH_MESSAGE decode error\n");
// free the memory
SEQUENCE_free( &asn_DEF_LTE_UL_DCCH_Message, LTE_UL_DCCH_Message, 1 );
return;
}
fclose(fd);
xer_fprint(stdout,&asn_DEF_LTE_UL_DCCH_Message, LTE_UL_DCCH_Message);
// recreate enough of X2 EN-DC Container
AssertFatal(LTE_UL_DCCH_Message->message.choice.c1.present == LTE_UL_DCCH_MessageType__c1_PR_ueCapabilityInformation,
"ueCapabilityInformation not present\n");
NR_CG_ConfigInfo_t *CG_ConfigInfo = calloc(1,sizeof(*CG_ConfigInfo));
CG_ConfigInfo->criticalExtensions.present = NR_CG_ConfigInfo__criticalExtensions_PR_c1;
CG_ConfigInfo->criticalExtensions.choice.c1 = calloc(1,sizeof(*CG_ConfigInfo->criticalExtensions.choice.c1));
CG_ConfigInfo->criticalExtensions.choice.c1->present = NR_CG_ConfigInfo__criticalExtensions__c1_PR_cg_ConfigInfo;
CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo = calloc(1,sizeof(*CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo));
NR_CG_ConfigInfo_IEs_t *cg_ConfigInfo = CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo;
cg_ConfigInfo->ue_CapabilityInfo = calloc(1,sizeof(*cg_ConfigInfo->ue_CapabilityInfo));
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_LTE_UE_CapabilityRAT_ContainerList,NULL,(void*)&LTE_UL_DCCH_Message->message.choice.c1.choice.ueCapabilityInformation.criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList,buffer,4096);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %jd)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
OCTET_STRING_fromBuf(cg_ConfigInfo->ue_CapabilityInfo,
(const char *)buffer,
(enc_rval.encoded+7)>>3);
parse_CG_ConfigInfo(rrc,CG_ConfigInfo);
}
else {
struct rrc_gNB_ue_context_s *ue_context_p = rrc_gNB_allocate_new_UE_context(rrc);
LOG_I(NR_RRC,"Adding new user (%p)\n",ue_context_p);
rrc_add_nsa_user(rrc,ue_context_p);
}
}
}
char openair_rrc_gNB_configuration(const module_id_t gnb_mod_idP, gNB_RrcConfigurationReq *configuration) {
protocol_ctxt_t ctxt;
gNB_RRC_INST *rrc=RC.nrrrc[gnb_mod_idP];
PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, gnb_mod_idP, GNB_FLAG_YES, NOT_A_RNTI, 0, 0,gnb_mod_idP);
LOG_I(NR_RRC,
PROTOCOL_NR_RRC_CTXT_FMT" Init...\n",
PROTOCOL_NR_RRC_CTXT_ARGS(&ctxt));
#if OCP_FRAMEWORK
while (rrc == NULL ) {
LOG_E(NR_RRC, "RC.nrrrc not yet initialized, waiting 1 second\n");
sleep(1);
}
#endif
AssertFatal(rrc != NULL, "RC.nrrrc not initialized!");
AssertFatal(NUMBER_OF_UE_MAX < (module_id_t)0xFFFFFFFFFFFFFFFF, " variable overflow");
AssertFatal(configuration!=NULL,"configuration input is null\n");
rrc->module_id = gnb_mod_idP;
rrc->Nb_ue = 0;
rrc->carrier.Srb0.Active = 0;
nr_uid_linear_allocator_init(&rrc->uid_allocator);
RB_INIT(&rrc->rrc_ue_head);
rrc->initial_id2_s1ap_ids = hashtable_create (NUMBER_OF_UE_MAX * 2, NULL, NULL);
rrc->s1ap_id2_s1ap_ids = hashtable_create (NUMBER_OF_UE_MAX * 2, NULL, NULL);
rrc->carrier.servingcellconfigcommon = configuration->scc;
rrc->carrier.ssb_SubcarrierOffset = configuration->ssb_SubcarrierOffset;
rrc->carrier.pdsch_AntennaPorts = configuration->pdsch_AntennaPorts;
/// System Information INIT
LOG_I(NR_RRC, PROTOCOL_NR_RRC_CTXT_FMT" Checking release \n",PROTOCOL_NR_RRC_CTXT_ARGS(&ctxt));
init_NR_SI(rrc);
rrc_init_nr_global_param();
openair_nr_rrc_on(&ctxt);
return 0;
}//END openair_rrc_gNB_configuration
void rrc_gNB_process_AdditionRequestInformation(const module_id_t gnb_mod_idP, x2ap_ENDC_sgnb_addition_req_t *m) {
LTE_UL_DCCH_Message_t *LTE_UL_DCCH_Message = NULL;
asn_dec_rval_t dec_rval = uper_decode_complete( NULL,
&asn_DEF_LTE_UL_DCCH_Message,
(void **)&LTE_UL_DCCH_Message,
(uint8_t *)m->rrc_buffer,
(int) m->rrc_buffer_size);//m->rrc_buffer_size);
/* asn_dec_rval_t dec_rval = uper_decode( NULL,
&asn_DEF_LTE_UL_DCCH_Message,
(void **)&LTE_UL_DCCH_Message,
(uint8_t *)m->rrc_buffer,
(int) m->rrc_buffer_size, 0, 0);//m->rrc_buffer_size);
*/
gNB_RRC_INST *rrc=RC.nrrrc[gnb_mod_idP];
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
AssertFatal(1==0,"NR_UL_DCCH_MESSAGE decode error\n");
// free the memory
SEQUENCE_free( &asn_DEF_LTE_UL_DCCH_Message, LTE_UL_DCCH_Message, 1 );
return;
}
xer_fprint(stdout,&asn_DEF_LTE_UL_DCCH_Message, LTE_UL_DCCH_Message);
// recreate enough of X2 EN-DC Container
AssertFatal(LTE_UL_DCCH_Message->message.choice.c1.present == LTE_UL_DCCH_MessageType__c1_PR_ueCapabilityInformation,
"ueCapabilityInformation not present\n");
NR_CG_ConfigInfo_t *CG_ConfigInfo = calloc(1,sizeof(*CG_ConfigInfo));
CG_ConfigInfo->criticalExtensions.present = NR_CG_ConfigInfo__criticalExtensions_PR_c1;
CG_ConfigInfo->criticalExtensions.choice.c1 = calloc(1,sizeof(*CG_ConfigInfo->criticalExtensions.choice.c1));
CG_ConfigInfo->criticalExtensions.choice.c1->present = NR_CG_ConfigInfo__criticalExtensions__c1_PR_cg_ConfigInfo;
CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo = calloc(1,sizeof(*CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo));
NR_CG_ConfigInfo_IEs_t *cg_ConfigInfo = CG_ConfigInfo->criticalExtensions.choice.c1->choice.cg_ConfigInfo;
cg_ConfigInfo->ue_CapabilityInfo = calloc(1,sizeof(*cg_ConfigInfo->ue_CapabilityInfo));
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_LTE_UE_CapabilityRAT_ContainerList,NULL,(void*)&LTE_UL_DCCH_Message->message.choice.c1.choice.ueCapabilityInformation.criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList,m->rrc_buffer,m->rrc_buffer_size);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %jd)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
OCTET_STRING_fromBuf(cg_ConfigInfo->ue_CapabilityInfo,
(const char *)m->rrc_buffer,
(enc_rval.encoded+7)>>3);
parse_CG_ConfigInfo(rrc,CG_ConfigInfo);
}
///---------------------------------------------------------------------------------------------------------------///
///---------------------------------------------------------------------------------------------------------------///
void *rrc_gnb_task(void *args_p) {
MessageDef *msg_p;
const char *msg_name_p;
instance_t instance;
int result;
//SRB_INFO *srb_info_p;
//int CC_id;
//protocol_ctxt_t ctxt;
itti_mark_task_ready(TASK_RRC_GNB);
LOG_I(NR_RRC,"Entering main loop of NR_RRC message task\n");
while (1) {
// Wait for a message
itti_receive_msg(TASK_RRC_GNB, &msg_p);
msg_name_p = ITTI_MSG_NAME(msg_p);
instance = ITTI_MSG_INSTANCE(msg_p);
LOG_I(NR_RRC,"Received message %s\n",msg_name_p);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
LOG_W(RRC, " *** Exiting NR_RRC thread\n");
itti_exit_task();
break;
case MESSAGE_TEST:
LOG_I(RRC, "[gNB %d] Received %s\n", instance, msg_name_p);
break;
/* Messages from MAC */
/* Messages from PDCP */
/*
#if defined(ENABLE_USE_MME)
// Messages from S1AP
case S1AP_DOWNLINK_NAS:
rrc_eNB_process_S1AP_DOWNLINK_NAS(msg_p, msg_name_p, instance, &rrc_gNB_mui);
break;
case S1AP_INITIAL_CONTEXT_SETUP_REQ:
rrc_eNB_process_S1AP_INITIAL_CONTEXT_SETUP_REQ(msg_p, msg_name_p, instance);
break;
case S1AP_UE_CTXT_MODIFICATION_REQ:
rrc_eNB_process_S1AP_UE_CTXT_MODIFICATION_REQ(msg_p, msg_name_p, instance);
break;
case S1AP_PAGING_IND:
LOG_D(RRC, "[eNB %d] Received Paging message from S1AP: %s\n", instance, msg_name_p);
rrc_eNB_process_PAGING_IND(msg_p, msg_name_p, instance);
break;
case S1AP_E_RAB_SETUP_REQ:
rrc_eNB_process_S1AP_E_RAB_SETUP_REQ(msg_p, msg_name_p, instance);
LOG_D(RRC, "[eNB %d] Received the message %s\n", instance, msg_name_p);
break;
case S1AP_E_RAB_MODIFY_REQ:
rrc_eNB_process_S1AP_E_RAB_MODIFY_REQ(msg_p, msg_name_p, instance);
break;
case S1AP_E_RAB_RELEASE_COMMAND:
rrc_eNB_process_S1AP_E_RAB_RELEASE_COMMAND(msg_p, msg_name_p, instance);
break;
case S1AP_UE_CONTEXT_RELEASE_REQ:
rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_REQ(msg_p, msg_name_p, instance);
break;
case S1AP_UE_CONTEXT_RELEASE_COMMAND:
rrc_eNB_process_S1AP_UE_CONTEXT_RELEASE_COMMAND(msg_p, msg_name_p, instance);
break;
case GTPV1U_ENB_DELETE_TUNNEL_RESP:
///Nothing to do. Apparently everything is done in S1AP processing
//LOG_I(RRC, "[eNB %d] Received message %s, not processed because procedure not synched\n",
//instance, msg_name_p);
if (rrc_eNB_get_ue_context(RC.nrrrc[instance], GTPV1U_ENB_DELETE_TUNNEL_RESP(msg_p).rnti)
&& rrc_eNB_get_ue_context(RC.nrrrc[instance], GTPV1U_ENB_DELETE_TUNNEL_RESP(msg_p).rnti)->ue_context.ue_release_timer_rrc > 0) {
rrc_eNB_get_ue_context(RC.nrrrc[instance], GTPV1U_ENB_DELETE_TUNNEL_RESP(msg_p).rnti)->ue_context.ue_release_timer_rrc =
rrc_eNB_get_ue_context(RC.nrrrc[instance], GTPV1U_ENB_DELETE_TUNNEL_RESP(msg_p).rnti)->ue_context.ue_release_timer_thres_rrc;
}
break;
#endif
*/
/* Messages from gNB app */
case NRRRC_CONFIGURATION_REQ:
LOG_I(NR_RRC, "[gNB %d] Received %s : %p\n", instance, msg_name_p,&NRRRC_CONFIGURATION_REQ(msg_p));
openair_rrc_gNB_configuration(GNB_INSTANCE_TO_MODULE_ID(instance), &NRRRC_CONFIGURATION_REQ(msg_p));
break;
/* Messages from X2AP */
case X2AP_ENDC_SGNB_ADDITION_REQ:
LOG_I(NR_RRC, "Received ENDC sgNB addition request from X2AP \n");
rrc_gNB_process_AdditionRequestInformation(GNB_INSTANCE_TO_MODULE_ID(instance), &X2AP_ENDC_SGNB_ADDITION_REQ(msg_p));
break;
case X2AP_ENDC_SGNB_RECONF_COMPLETE:
LOG_I(NR_RRC, "Handling of reconfiguration complete message at RRC gNB is pending \n");
break;
default:
LOG_E(NR_RRC, "[gNB %d] Received unexpected message %s\n", instance, msg_name_p);
break;
}
result = itti_free(ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal(result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
msg_p = NULL;
}
}
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