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openairinterface5g/openair2/RRC/NR_UE/rrc_UE.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_UE.c
* \brief RRC procedures
* \author R. Knopp, K.H. HSU
* \date 2018
* \version 0.1
* \company Eurecom / NTUST
* \email: knopp@eurecom.fr, kai-hsiang.hsu@eurecom.fr
* \note
* \warning
*/
#define RRC_UE
#define RRC_UE_C
#include "NR_DL-DCCH-Message.h" //asn_DEF_NR_DL_DCCH_Message
#include "NR_DL-CCCH-Message.h" //asn_DEF_NR_DL_CCCH_Message
#include "NR_BCCH-BCH-Message.h" //asn_DEF_NR_BCCH_BCH_Message
#include "NR_BCCH-DL-SCH-Message.h" //asn_DEF_NR_BCCH_DL_SCH_Message
#include "NR_CellGroupConfig.h" //asn_DEF_NR_CellGroupConfig
#include "NR_BWP-Downlink.h" //asn_DEF_NR_BWP_Downlink
#include "NR_RRCReconfiguration.h"
#include "NR_MeasConfig.h"
#include "NR_UL-DCCH-Message.h"
#include "uper_encoder.h"
#include "uper_decoder.h"
#include "rrc_defs.h"
#include "rrc_proto.h"
#include "LAYER2/NR_MAC_UE/mac_proto.h"
#include "intertask_interface.h"
#include "LAYER2/nr_rlc/nr_rlc_oai_api.h"
#include "nr-uesoftmodem.h"
#include "plmn_data.h"
#include "nr_pdcp/nr_pdcp_oai_api.h"
#include "openair3/SECU/secu_defs.h"
#include "openair3/SECU/key_nas_deriver.h"
#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#ifndef CELLULAR
#include "RRC/NR/MESSAGES/asn1_msg.h"
#endif
#include "RRC/NAS/nas_config.h"
#include "RRC/NAS/rb_config.h"
#include "SIMULATION/TOOLS/sim.h" // for taus
#include "nr_nas_msg_sim.h"
static NR_UE_RRC_INST_t *NR_UE_rrc_inst;
/* NAS Attach request with IMSI */
static const char nr_nas_attach_req_imsi_dummy_NSA_case[] = {
0x07,
0x41,
/* EPS Mobile identity = IMSI */
0x71,
0x08,
0x29,
0x80,
0x43,
0x21,
0x43,
0x65,
0x87,
0xF9,
/* End of EPS Mobile Identity */
0x02,
0xE0,
0xE0,
0x00,
0x20,
0x02,
0x03,
0xD0,
0x11,
0x27,
0x1A,
0x80,
0x80,
0x21,
0x10,
0x01,
0x00,
0x00,
0x10,
0x81,
0x06,
0x00,
0x00,
0x00,
0x00,
0x83,
0x06,
0x00,
0x00,
0x00,
0x00,
0x00,
0x0D,
0x00,
0x00,
0x0A,
0x00,
0x52,
0x12,
0xF2,
0x01,
0x27,
0x11,
};
static void nr_rrc_manage_rlc_bearers(const NR_UE_RRC_INST_t *rrc,
const NR_CellGroupConfig_t *cellGroupConfig,
rrcPerNB_t *nb);
static void nr_rrc_ue_process_RadioBearerConfig(NR_UE_RRC_INST_t *ue_rrc,
rrcPerNB_t *rrcNB,
NR_RadioBearerConfig_t *const radioBearerConfig);
static void nr_rrc_ue_generate_rrcReestablishmentComplete(NR_RRCReestablishment_t *rrcReestablishment);
static void process_lte_nsa_msg(NR_UE_RRC_INST_t *rrc, nsa_msg_t *msg, int msg_len);
static void nr_rrc_ue_process_rrcReconfiguration(NR_UE_RRC_INST_t *rrc,
int gNB_index,
NR_RRCReconfiguration_t *rrcReconfiguration);
static void nr_rrc_ue_process_ueCapabilityEnquiry(NR_UE_RRC_INST_t *rrc, NR_UECapabilityEnquiry_t *UECapabilityEnquiry);
static void nr_rrc_ue_process_masterCellGroup(NR_UE_RRC_INST_t *rrc,
rrcPerNB_t *rrcNB,
OCTET_STRING_t *masterCellGroup,
long *fullConfig);
void nr_rrc_ue_process_measConfig(rrcPerNB_t *rrc, NR_MeasConfig_t *const measConfig);
static void nr_rrc_ue_process_rrcReconfiguration(NR_UE_RRC_INST_t *rrc,
int gNB_index,
NR_RRCReconfiguration_t *rrcReconfiguration)
{
rrcPerNB_t *rrcNB = rrc->perNB + gNB_index;
switch (rrcReconfiguration->criticalExtensions.present) {
case NR_RRCReconfiguration__criticalExtensions_PR_rrcReconfiguration: {
NR_RRCReconfiguration_IEs_t *ie = rrcReconfiguration->criticalExtensions.choice.rrcReconfiguration;
if (ie->radioBearerConfig != NULL) {
LOG_I(NR_RRC, "radio Bearer Configuration is present\n");
nr_rrc_ue_process_RadioBearerConfig(rrc, rrcNB, ie->radioBearerConfig);
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_RadioBearerConfig, (const void *)ie->radioBearerConfig);
}
if (ie->nonCriticalExtension) {
NR_RRCReconfiguration_v1530_IEs_t *ext = ie->nonCriticalExtension;
if (ext->masterCellGroup)
nr_rrc_ue_process_masterCellGroup(rrc, rrcNB, ext->masterCellGroup, ext->fullConfig);
/* Check if there is dedicated NAS information to forward to NAS */
if (ie->nonCriticalExtension->dedicatedNAS_MessageList) {
struct NR_RRCReconfiguration_v1530_IEs__dedicatedNAS_MessageList *tmp = ext->dedicatedNAS_MessageList;
for (int i = 0; i < tmp->list.count; i++) {
MessageDef *ittiMsg = itti_alloc_new_message(TASK_RRC_NRUE, 0, NAS_CONN_ESTABLI_CNF);
NasConnEstabCnf *msg = &NAS_CONN_ESTABLI_CNF(ittiMsg);
msg->errCode = AS_SUCCESS;
msg->nasMsg.length = tmp->list.array[i]->size;
msg->nasMsg.data = tmp->list.array[i]->buf;
itti_send_msg_to_task(TASK_NAS_NRUE, rrc->ue_id, ittiMsg);
}
tmp->list.count = 0; // to prevent the automatic free by ASN1_FREE
}
}
if (ie->secondaryCellGroup != NULL) {
NR_CellGroupConfig_t *cellGroupConfig = NULL;
asn_dec_rval_t dec_rval = uper_decode(NULL,
&asn_DEF_NR_CellGroupConfig, // might be added prefix later
(void **)&cellGroupConfig,
(uint8_t *)ie->secondaryCellGroup->buf,
ie->secondaryCellGroup->size,
0,
0);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
uint8_t *buffer = ie->secondaryCellGroup->buf;
LOG_E(NR_RRC, "NR_CellGroupConfig decode error\n");
for (int i = 0; i < ie->secondaryCellGroup->size; i++)
LOG_E(NR_RRC, "%02x ", buffer[i]);
LOG_E(NR_RRC, "\n");
// free the memory
SEQUENCE_free(&asn_DEF_NR_CellGroupConfig, (void *)cellGroupConfig, 1);
}
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_CellGroupConfig, (const void *) cellGroupConfig);
nr_rrc_cellgroup_configuration(rrcNB, rrc, cellGroupConfig);
AssertFatal(!get_softmodem_params()->sa, "secondaryCellGroup only used in NSA for now\n");
nr_rrc_mac_config_req_cg(rrc->ue_id, 0, cellGroupConfig);
asn1cFreeStruc(asn_DEF_NR_CellGroupConfig, cellGroupConfig);
}
if (ie->measConfig != NULL) {
LOG_I(NR_RRC, "Measurement Configuration is present\n");
// if some element need to be updated
nr_rrc_ue_process_measConfig(rrcNB, ie->measConfig);
}
if (ie->lateNonCriticalExtension != NULL) {
// unuse now
}
} break;
case NR_RRCReconfiguration__criticalExtensions_PR_NOTHING:
case NR_RRCReconfiguration__criticalExtensions_PR_criticalExtensionsFuture:
default:
break;
}
return;
}
void process_nsa_message(NR_UE_RRC_INST_t *rrc, nsa_message_t nsa_message_type, void *message, int msg_len)
{
switch (nsa_message_type) {
case nr_SecondaryCellGroupConfig_r15:
{
NR_RRCReconfiguration_t *RRCReconfiguration=NULL;
asn_dec_rval_t dec_rval = uper_decode_complete( NULL,
&asn_DEF_NR_RRCReconfiguration,
(void **)&RRCReconfiguration,
(uint8_t *)message,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
LOG_E(NR_RRC, "NR_RRCReconfiguration decode error\n");
// free the memory
SEQUENCE_free( &asn_DEF_NR_RRCReconfiguration, RRCReconfiguration, 1 );
return;
}
nr_rrc_ue_process_rrcReconfiguration(rrc, 0, RRCReconfiguration);
ASN_STRUCT_FREE(asn_DEF_NR_RRCReconfiguration, RRCReconfiguration);
}
break;
case nr_RadioBearerConfigX_r15:
{
NR_RadioBearerConfig_t *RadioBearerConfig=NULL;
asn_dec_rval_t dec_rval = uper_decode_complete( NULL,
&asn_DEF_NR_RadioBearerConfig,
(void **)&RadioBearerConfig,
(uint8_t *)message,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
LOG_E(NR_RRC, "NR_RadioBearerConfig decode error\n");
// free the memory
SEQUENCE_free( &asn_DEF_NR_RadioBearerConfig, RadioBearerConfig, 1 );
return;
}
LOG_D(NR_RRC, "Calling nr_rrc_ue_process_RadioBearerConfig()with: e_rab_id = %ld, drbID = %ld, cipher_algo = %ld, key = %ld \n",
RadioBearerConfig->drb_ToAddModList->list.array[0]->cnAssociation->choice.eps_BearerIdentity,
RadioBearerConfig->drb_ToAddModList->list.array[0]->drb_Identity,
RadioBearerConfig->securityConfig->securityAlgorithmConfig->cipheringAlgorithm,
*RadioBearerConfig->securityConfig->keyToUse);
nr_rrc_ue_process_RadioBearerConfig(rrc, rrc->perNB + 0, RadioBearerConfig);
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_RadioBearerConfig, (const void *)RadioBearerConfig);
ASN_STRUCT_FREE(asn_DEF_NR_RadioBearerConfig, RadioBearerConfig);
}
break;
default:
AssertFatal(1==0,"Unknown message %d\n",nsa_message_type);
break;
}
}
NR_UE_RRC_INST_t* nr_rrc_init_ue(char* uecap_file, int nb_inst)
{
NR_UE_rrc_inst = (NR_UE_RRC_INST_t *)calloc(nb_inst, sizeof(NR_UE_RRC_INST_t));
AssertFatal(NR_UE_rrc_inst, "Couldn't allocate %d instances of RRC module\n", nb_inst);
for(int nr_ue = 0; nr_ue < nb_inst; nr_ue++) {
NR_UE_RRC_INST_t *rrc = &NR_UE_rrc_inst[nr_ue];
rrc->ue_id = nr_ue;
// fill UE-NR-Capability @ UE-CapabilityRAT-Container here.
rrc->selected_plmn_identity = 1;
rrc->dl_bwp_id = 0;
rrc->ul_bwp_id = 0;
rrc->as_security_activated = false;
rrc->ra_trigger = RA_NOT_RUNNING;
rrc->uecap_file = uecap_file;
memset(&rrc->timers_and_constants, 0, sizeof(rrc->timers_and_constants));
set_default_timers_and_constants(&rrc->timers_and_constants);
for (int i = 0; i < NB_CNX_UE; i++) {
rrcPerNB_t *ptr = &rrc->perNB[i];
ptr->SInfo = (NR_UE_RRC_SI_INFO){0};
init_SI_timers(&ptr->SInfo);
for (int j = 0; j < NR_NUM_SRB; j++)
ptr->Srb[j] = RB_NOT_PRESENT;
for (int j = 0; j < MAX_DRBS_PER_UE; j++)
ptr->status_DRBs[j] = RB_NOT_PRESENT;
// SRB0 activated by default
ptr->Srb[0] = RB_ESTABLISHED;
}
init_sidelink(rrc);
}
return NR_UE_rrc_inst;
}
bool check_si_validity(NR_UE_RRC_SI_INFO *SI_info, int si_type)
{
switch (si_type) {
case NR_SIB_TypeInfo__type_sibType2:
if (!SI_info->sib2)
return false;
case NR_SIB_TypeInfo__type_sibType3:
if (!SI_info->sib3)
return false;
case NR_SIB_TypeInfo__type_sibType4:
if (!SI_info->sib4)
return false;
case NR_SIB_TypeInfo__type_sibType5:
if (!SI_info->sib5)
return false;
case NR_SIB_TypeInfo__type_sibType6:
if (!SI_info->sib6)
return false;
case NR_SIB_TypeInfo__type_sibType7:
if (!SI_info->sib7)
return false;
case NR_SIB_TypeInfo__type_sibType8:
if (!SI_info->sib8)
return false;
case NR_SIB_TypeInfo__type_sibType9:
if (!SI_info->sib9)
return false;
case NR_SIB_TypeInfo__type_sibType10_v1610:
if (!SI_info->sib10)
return false;
case NR_SIB_TypeInfo__type_sibType11_v1610:
if (!SI_info->sib11)
return false;
case NR_SIB_TypeInfo__type_sibType12_v1610:
if (!SI_info->sib12)
return false;
case NR_SIB_TypeInfo__type_sibType13_v1610:
if (!SI_info->sib13)
return false;
case NR_SIB_TypeInfo__type_sibType14_v1610:
if (!SI_info->sib14)
return false;
default :
AssertFatal(false, "Invalid SIB type %d\n", si_type);
}
return true;
}
int check_si_status(NR_UE_RRC_SI_INFO *SI_info)
{
// schedule reception of SIB1 if RRC doesn't have it
if (!SI_info->sib1)
return 1;
else {
if (SI_info->sib1->si_SchedulingInfo) {
// Check if RRC has configured default SI
// from SIB2 to SIB14 as current ASN1 version
// TODO can be used for on demand SI when (if) implemented
for (int i = 2; i < 15; i++) {
int si_index = i - 2;
if ((SI_info->default_otherSI_map >> si_index) & 0x01) {
// if RRC has no valid version of one of the default configured SI
// Then schedule reception of otherSI
if (!check_si_validity(SI_info, si_index))
return 2;
}
}
}
}
return 0;
}
/*brief decode BCCH-BCH (MIB) message*/
static void nr_rrc_ue_decode_NR_BCCH_BCH_Message(NR_UE_RRC_INST_t *rrc,
const uint8_t gNB_index,
uint8_t *const bufferP,
const uint8_t buffer_len)
{
NR_BCCH_BCH_Message_t *bcch_message = NULL;
asn_dec_rval_t dec_rval = uper_decode_complete(NULL,
&asn_DEF_NR_BCCH_BCH_Message,
(void **)&bcch_message,
(const void *)bufferP,
buffer_len);
if ((dec_rval.code != RC_OK) || (dec_rval.consumed == 0)) {
LOG_E(NR_RRC, "NR_BCCH_BCH decode error\n");
return;
}
int get_sib = 0;
if (get_softmodem_params()->sa &&
bcch_message->message.choice.mib->cellBarred == NR_MIB__cellBarred_notBarred &&
rrc->nrRrcState != RRC_STATE_DETACH_NR) {
NR_UE_RRC_SI_INFO *SI_info = &rrc->perNB[gNB_index].SInfo;
// to schedule MAC to get SI if required
get_sib = check_si_status(SI_info);
}
nr_rrc_mac_config_req_mib(rrc->ue_id, 0, bcch_message->message.choice.mib, get_sib);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, bcch_message);
return;
}
static int nr_decode_SI(NR_UE_RRC_SI_INFO *SI_info, NR_SystemInformation_t *si)
{
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_UE_DECODE_SI, VCD_FUNCTION_IN );
// Dump contents
if (si->criticalExtensions.present == NR_SystemInformation__criticalExtensions_PR_systemInformation ||
si->criticalExtensions.present == NR_SystemInformation__criticalExtensions_PR_criticalExtensionsFuture_r16) {
LOG_D( RRC, "[UE] si->criticalExtensions.choice.NR_SystemInformation_t->sib_TypeAndInfo.list.count %d\n",
si->criticalExtensions.choice.systemInformation->sib_TypeAndInfo.list.count );
} else {
LOG_D( RRC, "[UE] Unknown criticalExtension version (not Rel16)\n" );
return -1;
}
for (int i = 0; i < si->criticalExtensions.choice.systemInformation->sib_TypeAndInfo.list.count; i++) {
SystemInformation_IEs__sib_TypeAndInfo__Member *typeandinfo;
typeandinfo = si->criticalExtensions.choice.systemInformation->sib_TypeAndInfo.list.array[i];
LOG_I(RRC, "Found SIB%d\n", typeandinfo->present + 1);
switch(typeandinfo->present) {
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib2:
if(!SI_info->sib2)
SI_info->sib2 = calloc(1, sizeof(*SI_info->sib2));
memcpy(SI_info->sib2, typeandinfo->choice.sib2, sizeof(NR_SIB2_t));
nr_timer_start(&SI_info->sib2_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib3:
if(!SI_info->sib3)
SI_info->sib3 = calloc(1, sizeof(*SI_info->sib3));
memcpy(SI_info->sib3, typeandinfo->choice.sib3, sizeof(NR_SIB3_t));
nr_timer_start(&SI_info->sib3_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib4:
if(!SI_info->sib4)
SI_info->sib4 = calloc(1, sizeof(*SI_info->sib4));
memcpy(SI_info->sib4, typeandinfo->choice.sib4, sizeof(NR_SIB4_t));
nr_timer_start(&SI_info->sib4_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib5:
if(!SI_info->sib5)
SI_info->sib5 = calloc(1, sizeof(*SI_info->sib5));
memcpy(SI_info->sib5, typeandinfo->choice.sib5, sizeof(NR_SIB5_t));
nr_timer_start(&SI_info->sib5_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib6:
if(!SI_info->sib6)
SI_info->sib6 = calloc(1, sizeof(*SI_info->sib6));
memcpy(SI_info->sib6, typeandinfo->choice.sib6, sizeof(NR_SIB6_t));
nr_timer_start(&SI_info->sib6_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib7:
if(!SI_info->sib7)
SI_info->sib7 = calloc(1, sizeof(*SI_info->sib7));
memcpy(SI_info->sib7, typeandinfo->choice.sib7, sizeof(NR_SIB7_t));
nr_timer_start(&SI_info->sib7_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib8:
if(!SI_info->sib8)
SI_info->sib8 = calloc(1, sizeof(*SI_info->sib8));
memcpy(SI_info->sib8, typeandinfo->choice.sib8, sizeof(NR_SIB8_t));
nr_timer_start(&SI_info->sib8_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib9:
if(!SI_info->sib9)
SI_info->sib9 = calloc(1, sizeof(*SI_info->sib9));
memcpy(SI_info->sib9, typeandinfo->choice.sib9, sizeof(NR_SIB9_t));
nr_timer_start(&SI_info->sib9_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib10_v1610:
if(!SI_info->sib10)
SI_info->sib10 = calloc(1, sizeof(*SI_info->sib10));
memcpy(SI_info->sib10, typeandinfo->choice.sib10_v1610, sizeof(NR_SIB10_r16_t));
nr_timer_start(&SI_info->sib10_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib11_v1610:
if(!SI_info->sib11)
SI_info->sib11 = calloc(1, sizeof(*SI_info->sib11));
memcpy(SI_info->sib11, typeandinfo->choice.sib11_v1610, sizeof(NR_SIB11_r16_t));
nr_timer_start(&SI_info->sib11_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib12_v1610:
if(!SI_info->sib12)
SI_info->sib12 = calloc(1, sizeof(*SI_info->sib12));
memcpy(SI_info->sib12, typeandinfo->choice.sib12_v1610, sizeof(NR_SIB12_r16_t));
nr_timer_start(&SI_info->sib12_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib13_v1610:
if(!SI_info->sib13)
SI_info->sib13 = calloc(1, sizeof(*SI_info->sib13));
memcpy(SI_info->sib13, typeandinfo->choice.sib13_v1610, sizeof(NR_SIB13_r16_t));
nr_timer_start(&SI_info->sib13_timer);
break;
case NR_SystemInformation_IEs__sib_TypeAndInfo__Member_PR_sib14_v1610:
if(!SI_info->sib14)
SI_info->sib14 = calloc(1, sizeof(*SI_info->sib14));
memcpy(SI_info->sib12, typeandinfo->choice.sib14_v1610, sizeof(NR_SIB14_r16_t));
nr_timer_start(&SI_info->sib14_timer);
break;
default:
break;
}
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_UE_DECODE_SI, VCD_FUNCTION_OUT);
return 0;
}
static void nr_rrc_handle_msg3_indication(NR_UE_RRC_INST_t *rrc, rnti_t rnti)
{
switch (rrc->ra_trigger) {
case INITIAL_ACCESS_FROM_RRC_IDLE:
// After SIB1 is received, prepare RRCConnectionRequest
rrc->rnti = rnti;
// start timer T300
NR_UE_Timers_Constants_t *tac = &rrc->timers_and_constants;
nr_timer_start(&tac->T300);
break;
case RRC_CONNECTION_REESTABLISHMENT:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case DURING_HANDOVER:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case NON_SYNCHRONISED:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case TRANSITION_FROM_RRC_INACTIVE:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case TO_ESTABLISH_TA:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case REQUEST_FOR_OTHER_SI:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
case BEAM_FAILURE_RECOVERY:
AssertFatal(1==0, "ra_trigger not implemented yet!\n");
break;
default:
AssertFatal(1==0, "Invalid ra_trigger value!\n");
break;
}
}
static void nr_rrc_ue_prepare_RRCSetupRequest(NR_UE_RRC_INST_t *rrc)
{
LOG_D(NR_RRC, "Generation of RRCSetupRequest\n");
uint8_t rv[6];
// Get RRCConnectionRequest, fill random for now
// Generate random byte stream for contention resolution
for (int i = 0; i < 6; i++) {
#ifdef SMBV
// if SMBV is configured the contention resolution needs to be fix for the connection procedure to succeed
rv[i] = i;
#else
rv[i] = taus() & 0xff;
#endif
}
uint8_t buf[1024];
int len = do_RRCSetupRequest(buf, sizeof(buf), rv);
nr_rlc_srb_recv_sdu(rrc->ue_id, 0, buf, len);
}
void nr_rrc_configure_default_SI(NR_UE_RRC_SI_INFO *SI_info,
NR_SIB1_t *sib1)
{
struct NR_SI_SchedulingInfo *si_SchedulingInfo = sib1->si_SchedulingInfo;
if (!si_SchedulingInfo)
return;
SI_info->default_otherSI_map = 0;
for (int i = 0; i < si_SchedulingInfo->schedulingInfoList.list.count; i++) {
struct NR_SchedulingInfo *schedulingInfo = si_SchedulingInfo->schedulingInfoList.list.array[i];
for (int j = 0; j < schedulingInfo->sib_MappingInfo.list.count; j++) {
struct NR_SIB_TypeInfo *sib_Type = schedulingInfo->sib_MappingInfo.list.array[j];
SI_info->default_otherSI_map |= 1 << sib_Type->type;
}
}
}
static int8_t nr_rrc_ue_decode_NR_BCCH_DL_SCH_Message(NR_UE_RRC_INST_t *rrc,
const uint8_t gNB_index,
uint8_t *const Sdu,
const uint8_t Sdu_len,
const uint8_t rsrq,
const uint8_t rsrp)
{
NR_BCCH_DL_SCH_Message_t *bcch_message = NULL;
NR_UE_RRC_SI_INFO *SI_info = &rrc->perNB[gNB_index].SInfo;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_BCCH, VCD_FUNCTION_IN);
asn_dec_rval_t dec_rval = uper_decode_complete(NULL,
&asn_DEF_NR_BCCH_DL_SCH_Message,
(void **)&bcch_message,
(const void *)Sdu,
Sdu_len);
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_BCCH_DL_SCH_Message,(void *)bcch_message);
}
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
LOG_E(NR_RRC, "[UE %ld] Failed to decode BCCH_DLSCH_MESSAGE (%zu bits)\n", rrc->ue_id, dec_rval.consumed);
log_dump(NR_RRC, Sdu, Sdu_len, LOG_DUMP_CHAR," Received bytes:\n");
// free the memory
SEQUENCE_free(&asn_DEF_NR_BCCH_DL_SCH_Message, (void *)bcch_message, 1);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_BCCH, VCD_FUNCTION_OUT );
return -1;
}
if (bcch_message->message.present == NR_BCCH_DL_SCH_MessageType_PR_c1) {
switch (bcch_message->message.choice.c1->present) {
case NR_BCCH_DL_SCH_MessageType__c1_PR_systemInformationBlockType1:
LOG_D(NR_RRC, "[UE %ld] Decoding SIB1\n", rrc->ue_id);
asn1cFreeStruc(asn_DEF_NR_SIB1, SI_info->sib1);
NR_SIB1_t *sib1 = bcch_message->message.choice.c1->choice.systemInformationBlockType1;
if(!SI_info->sib1)
SI_info->sib1 = calloc(1, sizeof(*SI_info->sib1));
memcpy(SI_info->sib1, sib1, sizeof(NR_SIB1_t));
if(g_log->log_component[NR_RRC].level >= OAILOG_DEBUG)
xer_fprint(stdout, &asn_DEF_NR_SIB1, (const void *) SI_info->sib1);
LOG_A(NR_RRC, "SIB1 decoded\n");
nr_timer_start(&SI_info->sib1_timer);
if (rrc->nrRrcState == RRC_STATE_IDLE_NR) {
rrc->ra_trigger = INITIAL_ACCESS_FROM_RRC_IDLE;
// preparing RRC setup request payload in advance
nr_rrc_ue_prepare_RRCSetupRequest(rrc);
}
// configure default SI
nr_rrc_configure_default_SI(SI_info, sib1);
// configure timers and constant
nr_rrc_set_sib1_timers_and_constants(&rrc->timers_and_constants, sib1);
nr_rrc_mac_config_req_sib1(rrc->ue_id, 0, sib1->si_SchedulingInfo, sib1->servingCellConfigCommon);
break;
case NR_BCCH_DL_SCH_MessageType__c1_PR_systemInformation:
LOG_I(NR_RRC, "[UE %ld] Decoding SI\n", rrc->ue_id);
NR_SystemInformation_t *si = bcch_message->message.choice.c1->choice.systemInformation;
nr_decode_SI(SI_info, si);
SEQUENCE_free(&asn_DEF_NR_BCCH_DL_SCH_Message, (void *)bcch_message, 1);
break;
case NR_BCCH_DL_SCH_MessageType__c1_PR_NOTHING:
default:
break;
}
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_BCCH, VCD_FUNCTION_OUT );
return 0;
}
static void nr_rrc_manage_rlc_bearers(const NR_UE_RRC_INST_t *rrc,
const NR_CellGroupConfig_t *cellGroupConfig,
rrcPerNB_t *nb)
{
if (cellGroupConfig->rlc_BearerToReleaseList != NULL) {
for (int i = 0; i < cellGroupConfig->rlc_BearerToReleaseList->list.count; i++) {
NR_LogicalChannelIdentity_t *lcid = cellGroupConfig->rlc_BearerToReleaseList->list.array[i];
AssertFatal(lcid, "LogicalChannelIdentity shouldn't be null here\n");
nr_rlc_release_entity(rrc->ue_id, *lcid);
}
}
if (cellGroupConfig->rlc_BearerToAddModList != NULL) {
for (int i = 0; i < cellGroupConfig->rlc_BearerToAddModList->list.count; i++) {
NR_RLC_BearerConfig_t *rlc_bearer = cellGroupConfig->rlc_BearerToAddModList->list.array[i];
NR_LogicalChannelIdentity_t lcid = rlc_bearer->logicalChannelIdentity;
if (nb->active_RLC_entity[lcid]) {
if (rlc_bearer->reestablishRLC)
nr_rlc_reestablish_entity(rrc->ue_id, lcid);
nr_rlc_reconfigure_entity(rrc->ue_id, lcid, rlc_bearer->rlc_Config);
} else {
nb->active_RLC_entity[lcid] = true;
AssertFatal(rlc_bearer->servedRadioBearer, "servedRadioBearer mandatory in case of setup\n");
AssertFatal(rlc_bearer->servedRadioBearer->present != NR_RLC_BearerConfig__servedRadioBearer_PR_NOTHING,
"Invalid RB for RLC configuration\n");
if (rlc_bearer->servedRadioBearer->present == NR_RLC_BearerConfig__servedRadioBearer_PR_srb_Identity) {
NR_SRB_Identity_t srb_id = rlc_bearer->servedRadioBearer->choice.srb_Identity;
nr_rlc_add_srb(rrc->ue_id, srb_id, rlc_bearer);
} else { // DRB
NR_DRB_Identity_t drb_id = rlc_bearer->servedRadioBearer->choice.drb_Identity;
nr_rlc_add_drb(rrc->ue_id, drb_id, rlc_bearer);
}
}
}
}
}
void nr_rrc_cellgroup_configuration(rrcPerNB_t *rrcNB, NR_UE_RRC_INST_t *rrc, NR_CellGroupConfig_t *cellGroupConfig)
{
NR_UE_Timers_Constants_t *tac = &rrc->timers_and_constants;
NR_SpCellConfig_t *spCellConfig = cellGroupConfig->spCellConfig;
if(spCellConfig != NULL) {
if (spCellConfig->reconfigurationWithSync != NULL) {
NR_ReconfigurationWithSync_t *reconfigurationWithSync = spCellConfig->reconfigurationWithSync;
// perform Reconfiguration with sync according to 5.3.5.5.2
if (!rrc->as_security_activated && rrc->nrRrcState != RRC_STATE_IDLE_NR) {
// perform the actions upon going to RRC_IDLE as specified in 5.3.11
// with the release cause 'other' upon which the procedure ends
// TODO
}
nr_timer_stop(&tac->T310);
int t304_value = nr_rrc_get_T304(reconfigurationWithSync->t304);
nr_timer_setup(&tac->T304, t304_value, 10); // 10ms step
nr_timer_start(&tac->T304);
rrc->rnti = reconfigurationWithSync->newUE_Identity;
// resume suspended radio bearers
for (int i = 0; i < NR_NUM_SRB; i++) {
if (rrcNB->Srb[i] == RB_SUSPENDED)
rrcNB->Srb[i] = RB_ESTABLISHED;
}
for (int i = 0; i < MAX_DRBS_PER_UE; i++) {
if (rrcNB->status_DRBs[i] == RB_SUSPENDED)
rrcNB->status_DRBs[i] = RB_ESTABLISHED;
}
// TODO reset MAC
}
nr_rrc_handle_SetupRelease_RLF_TimersAndConstants(rrc, spCellConfig->rlf_TimersAndConstants);
if (spCellConfig->spCellConfigDedicated) {
if (spCellConfig->spCellConfigDedicated->firstActiveDownlinkBWP_Id)
rrc->dl_bwp_id = *spCellConfig->spCellConfigDedicated->firstActiveDownlinkBWP_Id;
if (spCellConfig->spCellConfigDedicated->uplinkConfig &&
spCellConfig->spCellConfigDedicated->uplinkConfig->firstActiveUplinkBWP_Id)
rrc->dl_bwp_id = *spCellConfig->spCellConfigDedicated->uplinkConfig->firstActiveUplinkBWP_Id;
}
}
nr_rrc_manage_rlc_bearers(rrc, cellGroupConfig, rrcNB);
AssertFatal(cellGroupConfig->sCellToReleaseList == NULL,
"Secondary serving cell release not implemented\n");
AssertFatal(cellGroupConfig->sCellToAddModList == NULL,
"Secondary serving cell addition not implemented\n");
}
static void nr_rrc_ue_process_masterCellGroup(NR_UE_RRC_INST_t *rrc,
rrcPerNB_t *rrcNB,
OCTET_STRING_t *masterCellGroup,
long *fullConfig)
{
AssertFatal(!fullConfig, "fullConfig not supported yet\n");
NR_CellGroupConfig_t *cellGroupConfig = NULL;
uper_decode(NULL,
&asn_DEF_NR_CellGroupConfig, //might be added prefix later
(void **)&cellGroupConfig,
(uint8_t *)masterCellGroup->buf,
masterCellGroup->size, 0, 0);
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_CellGroupConfig, (const void *) cellGroupConfig);
}
nr_rrc_cellgroup_configuration(rrcNB, rrc, cellGroupConfig);
LOG_D(RRC,"Sending CellGroupConfig to MAC\n");
nr_rrc_mac_config_req_cg(rrc->ue_id, 0, cellGroupConfig);
asn1cFreeStruc(asn_DEF_NR_CellGroupConfig, cellGroupConfig);
}
static void rrc_ue_generate_RRCSetupComplete(const NR_UE_RRC_INST_t *rrc, const uint8_t Transaction_id)
{
uint8_t buffer[100];
uint8_t size;
const char *nas_msg;
int nas_msg_length;
if (get_softmodem_params()->sa) {
as_nas_info_t initialNasMsg;
nr_ue_nas_t *nas = get_ue_nas_info(rrc->ue_id);
generateRegistrationRequest(&initialNasMsg, nas);
nas_msg = (char*)initialNasMsg.data;
nas_msg_length = initialNasMsg.length;
} else {
nas_msg = nr_nas_attach_req_imsi_dummy_NSA_case;
nas_msg_length = sizeof(nr_nas_attach_req_imsi_dummy_NSA_case);
}
size = do_RRCSetupComplete(buffer, sizeof(buffer), Transaction_id, rrc->selected_plmn_identity, nas_msg_length, nas_msg);
LOG_I(NR_RRC, "[UE %ld][RAPROC] Logical Channel UL-DCCH (SRB1), Generating RRCSetupComplete (bytes%d)\n", rrc->ue_id, size);
int srb_id = 1; // RRC setup complete on SRB1
LOG_D(NR_RRC, "[RRC_UE %ld] PDCP_DATA_REQ/%d Bytes RRCSetupComplete ---> %d\n", rrc->ue_id, size, srb_id);
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, size, buffer, deliver_pdu_srb_rlc, NULL);
}
static void nr_rrc_process_rrcsetup(NR_UE_RRC_INST_t *rrc,
const uint8_t gNB_index,
const NR_RRCSetup_t *rrcSetup)
{
// if the RRCSetup is received in response to an RRCReestablishmentRequest
// or RRCResumeRequest or RRCResumeRequest1
// TODO none of the procedures implemented yet
// perform the cell group configuration procedure in accordance with the received masterCellGroup
nr_rrc_ue_process_masterCellGroup(rrc,
rrc->perNB + gNB_index,
&rrcSetup->criticalExtensions.choice.rrcSetup->masterCellGroup,
NULL);
// perform the radio bearer configuration procedure in accordance with the received radioBearerConfig
nr_rrc_ue_process_RadioBearerConfig(rrc,
rrc->perNB + gNB_index,
&rrcSetup->criticalExtensions.choice.rrcSetup->radioBearerConfig);
// TODO (not handled) if stored, discard the cell reselection priority information provided by
// the cellReselectionPriorities or inherited from another RAT
// stop timer T300, T301, T319, T320 if running;
NR_UE_Timers_Constants_t *timers = &rrc->timers_and_constants;
nr_timer_stop(&timers->T300);
nr_timer_stop(&timers->T301);
nr_timer_stop(&timers->T319);
nr_timer_stop(&timers->T320);
// TODO if T390 and T302 are running (not implemented)
// if the RRCSetup is received in response to an RRCResumeRequest, RRCResumeRequest1 or RRCSetupRequest
// enter RRC_CONNECTED
rrc->nrRrcState = RRC_STATE_CONNECTED_NR;
// set the content of RRCSetupComplete message
// TODO procedues described in 5.3.3.4 seems more complex than what we actualy do
rrc_ue_generate_RRCSetupComplete(rrc, rrcSetup->rrc_TransactionIdentifier);
}
static int8_t nr_rrc_ue_decode_ccch(NR_UE_RRC_INST_t *rrc,
const NRRrcMacCcchDataInd *ind,
const uint8_t gNB_index)
{
NR_DL_CCCH_Message_t *dl_ccch_msg = NULL;
asn_dec_rval_t dec_rval;
int rval=0;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_CCCH, VCD_FUNCTION_IN);
LOG_D(RRC, "[NR UE%ld] Decoding DL-CCCH message (%d bytes), State %d\n", rrc->ue_id, ind->sdu_size, rrc->nrRrcState);
dec_rval = uper_decode(NULL, &asn_DEF_NR_DL_CCCH_Message, (void **)&dl_ccch_msg, ind->sdu, ind->sdu_size, 0, 0);
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_DL_CCCH_Message, (void *)dl_ccch_msg);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
LOG_E(RRC, "[UE %ld] Failed to decode DL-CCCH-Message (%zu bytes)\n", rrc->ue_id, dec_rval.consumed);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_CCCH, VCD_FUNCTION_OUT);
return -1;
}
if (dl_ccch_msg->message.present == NR_DL_CCCH_MessageType_PR_c1) {
switch (dl_ccch_msg->message.choice.c1->present) {
case NR_DL_CCCH_MessageType__c1_PR_NOTHING:
LOG_I(NR_RRC, "[UE%ld] Received PR_NOTHING on DL-CCCH-Message\n", rrc->ue_id);
rval = 0;
break;
case NR_DL_CCCH_MessageType__c1_PR_rrcReject:
LOG_I(NR_RRC, "[UE%ld] Logical Channel DL-CCCH (SRB0), Received RRCReject \n", rrc->ue_id);
rval = 0;
break;
case NR_DL_CCCH_MessageType__c1_PR_rrcSetup:
LOG_I(NR_RRC, "[UE%ld][RAPROC] Logical Channel DL-CCCH (SRB0), Received NR_RRCSetup\n", rrc->ue_id);
nr_rrc_process_rrcsetup(rrc, gNB_index, dl_ccch_msg->message.choice.c1->choice.rrcSetup);
rval = 0;
break;
default:
LOG_E(NR_RRC, "[UE%ld] Unknown message\n", rrc->ue_id);
rval = -1;
break;
}
}
ASN_STRUCT_FREE(asn_DEF_NR_DL_CCCH_Message, dl_ccch_msg);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_DECODE_CCCH, VCD_FUNCTION_OUT);
return rval;
}
static void nr_rrc_ue_process_securityModeCommand(NR_UE_RRC_INST_t *ue_rrc,
NR_SecurityModeCommand_t *const securityModeCommand,
const uint8_t gNB_index)
{
int securityMode = 0;
LOG_I(NR_RRC, "Receiving from SRB1 (DL-DCCH), Processing securityModeCommand (eNB %d)\n", gNB_index);
NR_SecurityConfigSMC_t *securityConfigSMC =
&securityModeCommand->criticalExtensions.choice.securityModeCommand->securityConfigSMC;
switch (securityConfigSMC->securityAlgorithmConfig.cipheringAlgorithm) {
case NR_CipheringAlgorithm_nea0:
case NR_CipheringAlgorithm_nea1:
case NR_CipheringAlgorithm_nea2:
LOG_I(NR_RRC, "Security algorithm is set to nea%d\n", securityMode);
securityMode = securityConfigSMC->securityAlgorithmConfig.cipheringAlgorithm;
break;
default:
LOG_W(NR_RRC, "Security algorithm is set to none\n");
securityMode = NR_CipheringAlgorithm_spare1;
break;
}
ue_rrc->cipheringAlgorithm = securityConfigSMC->securityAlgorithmConfig.cipheringAlgorithm;
if (securityConfigSMC->securityAlgorithmConfig.integrityProtAlgorithm != NULL) {
switch (*securityConfigSMC->securityAlgorithmConfig.integrityProtAlgorithm) {
case NR_IntegrityProtAlgorithm_nia1:
LOG_I(NR_RRC, "Integrity protection algorithm is set to nia1\n");
securityMode |= 1 << 5;
break;
case NR_IntegrityProtAlgorithm_nia2:
LOG_I(NR_RRC, "Integrity protection algorithm is set to nia2\n");
securityMode |= 1 << 6;
break;
default:
LOG_I(NR_RRC, "Integrity protection algorithm is set to none\n");
securityMode |= 0x70;
break;
}
ue_rrc->integrityProtAlgorithm = *securityConfigSMC->securityAlgorithmConfig.integrityProtAlgorithm;
}
LOG_D(NR_RRC, "security mode is %x \n", securityMode);
NR_UL_DCCH_Message_t ul_dcch_msg = {0};
// memset((void *)&SecurityModeCommand,0,sizeof(SecurityModeCommand_t));
ul_dcch_msg.message.present = NR_UL_DCCH_MessageType_PR_c1;
asn1cCalloc(ul_dcch_msg.message.choice.c1, c1);
if (securityMode >= NO_SECURITY_MODE) {
LOG_I(NR_RRC, "rrc_ue_process_securityModeCommand, security mode complete case \n");
c1->present = NR_UL_DCCH_MessageType__c1_PR_securityModeComplete;
} else {
LOG_I(NR_RRC, "rrc_ue_process_securityModeCommand, security mode failure case \n");
c1->present = NR_UL_DCCH_MessageType__c1_PR_securityModeFailure;
c1->present = NR_UL_DCCH_MessageType__c1_PR_securityModeComplete;
}
uint8_t kRRCenc[16] = {0};
uint8_t kUPenc[16] = {0};
uint8_t kRRCint[16] = {0};
nr_derive_key(UP_ENC_ALG, ue_rrc->cipheringAlgorithm, ue_rrc->kgnb, kUPenc);
nr_derive_key(RRC_ENC_ALG, ue_rrc->cipheringAlgorithm, ue_rrc->kgnb, kRRCenc);
nr_derive_key(RRC_INT_ALG, ue_rrc->integrityProtAlgorithm, ue_rrc->kgnb, kRRCint);
log_dump(NR_RRC, ue_rrc->kgnb, 32, LOG_DUMP_CHAR, "driving kRRCenc, kRRCint and kUPenc from KgNB=");
if (securityMode != 0xff) {
uint8_t security_mode = ue_rrc->cipheringAlgorithm | (ue_rrc->integrityProtAlgorithm << 4);
// configure lower layers to apply SRB integrity protection and ciphering
for (int i = 1; i < NR_NUM_SRB; i++) {
if (ue_rrc->perNB[gNB_index].Srb[i] == RB_ESTABLISHED)
nr_pdcp_config_set_security(ue_rrc->ue_id, i, security_mode, kRRCenc, kRRCint, kUPenc);
}
} else {
LOG_I(NR_RRC, "skipped pdcp_config_set_security() as securityMode == 0x%02x", securityMode);
}
if (securityModeCommand->criticalExtensions.present == NR_SecurityModeCommand__criticalExtensions_PR_securityModeCommand) {
asn1cCalloc(c1->choice.securityModeComplete, modeComplete);
modeComplete->rrc_TransactionIdentifier = securityModeCommand->rrc_TransactionIdentifier;
modeComplete->criticalExtensions.present = NR_SecurityModeComplete__criticalExtensions_PR_securityModeComplete;
asn1cCalloc(modeComplete->criticalExtensions.choice.securityModeComplete, ext);
ext->nonCriticalExtension = NULL;
LOG_I(NR_RRC,
"Receiving from SRB1 (DL-DCCH), encoding securityModeComplete (gNB %d), rrc_TransactionIdentifier: %ld\n",
gNB_index,
securityModeCommand->rrc_TransactionIdentifier);
uint8_t buffer[200];
asn_enc_rval_t enc_rval =
uper_encode_to_buffer(&asn_DEF_NR_UL_DCCH_Message, NULL, (void *)&ul_dcch_msg, buffer, sizeof(buffer));
AssertFatal(enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %jd)!\n", enc_rval.failed_type->name, enc_rval.encoded);
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_UL_DCCH_Message, (void *)&ul_dcch_msg);
}
log_dump(NR_RRC, buffer, 16, LOG_DUMP_CHAR, "securityModeComplete payload: ");
LOG_D(NR_RRC, "securityModeComplete Encoded %zd bits (%zd bytes)\n", enc_rval.encoded, (enc_rval.encoded + 7) / 8);
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_NR_UL_DCCH_Message, &ul_dcch_msg);
for (int i = 0; i < (enc_rval.encoded + 7) / 8; i++) {
LOG_T(NR_RRC, "%02x.", buffer[i]);
}
LOG_T(NR_RRC, "\n");
// TODO the SecurityModeCommand message needs to pass the integrity protection check
// for the UE to declare AS security to be activated
ue_rrc->as_security_activated = true;
int srb_id = 1; // SecurityModeComplete in SRB1
nr_pdcp_data_req_srb(ue_rrc->ue_id, srb_id, 0, (enc_rval.encoded + 7) / 8, buffer, deliver_pdu_srb_rlc, NULL);
} else
LOG_W(NR_RRC,
"securityModeCommand->criticalExtensions.present (%d) != "
"NR_SecurityModeCommand__criticalExtensions_PR_securityModeCommand\n",
securityModeCommand->criticalExtensions.present);
}
//-----------------------------------------------------------------------------
void nr_rrc_ue_process_measConfig(rrcPerNB_t *rrc, NR_MeasConfig_t *const measConfig)
//-----------------------------------------------------------------------------
{
int i;
long ind;
NR_MeasObjectToAddMod_t *measObj = NULL;
NR_ReportConfigToAddMod_t *reportConfig = NULL;
if (measConfig->measObjectToRemoveList != NULL) {
for (i = 0; i < measConfig->measObjectToRemoveList->list.count; i++) {
ind = *measConfig->measObjectToRemoveList->list.array[i];
free(rrc->MeasObj[ind - 1]);
}
}
if (measConfig->measObjectToAddModList != NULL) {
LOG_I(NR_RRC, "Measurement Object List is present\n");
for (i = 0; i < measConfig->measObjectToAddModList->list.count; i++) {
measObj = measConfig->measObjectToAddModList->list.array[i];
ind = measConfig->measObjectToAddModList->list.array[i]->measObjectId;
if (rrc->MeasObj[ind - 1]) {
LOG_D(NR_RRC, "Modifying measurement object %ld\n", ind);
memcpy(rrc->MeasObj[ind - 1], (char *)measObj, sizeof(NR_MeasObjectToAddMod_t));
} else {
LOG_I(NR_RRC, "Adding measurement object %ld\n", ind);
if (measObj->measObject.present == NR_MeasObjectToAddMod__measObject_PR_measObjectNR) {
rrc->MeasObj[ind - 1] = measObj;
}
}
}
LOG_I(NR_RRC, "call rrc_mac_config_req \n");
// rrc_mac_config_req_ue
}
if (measConfig->reportConfigToRemoveList != NULL) {
for (i = 0; i < measConfig->reportConfigToRemoveList->list.count; i++) {
ind = *measConfig->reportConfigToRemoveList->list.array[i];
free(rrc->ReportConfig[ind - 1]);
}
}
if (measConfig->reportConfigToAddModList != NULL) {
LOG_I(NR_RRC, "Report Configuration List is present\n");
for (i = 0; i < measConfig->reportConfigToAddModList->list.count; i++) {
ind = measConfig->reportConfigToAddModList->list.array[i]->reportConfigId;
reportConfig = measConfig->reportConfigToAddModList->list.array[i];
if (rrc->ReportConfig[ind - 1]) {
LOG_I(NR_RRC, "Modifying Report Configuration %ld\n", ind - 1);
memcpy(rrc->ReportConfig[ind - 1],
(char *)measConfig->reportConfigToAddModList->list.array[i],
sizeof(NR_ReportConfigToAddMod_t));
} else {
LOG_D(NR_RRC, "Adding Report Configuration %ld %p \n", ind - 1, measConfig->reportConfigToAddModList->list.array[i]);
if (reportConfig->reportConfig.present == NR_ReportConfigToAddMod__reportConfig_PR_reportConfigNR) {
rrc->ReportConfig[ind - 1] = measConfig->reportConfigToAddModList->list.array[i];
}
}
}
}
if (measConfig->measIdToRemoveList != NULL) {
for (i = 0; i < measConfig->measIdToRemoveList->list.count; i++) {
ind = *measConfig->measIdToRemoveList->list.array[i];
free(rrc->MeasId[ind - 1]);
}
}
if (measConfig->measIdToAddModList != NULL) {
for (i = 0; i < measConfig->measIdToAddModList->list.count; i++) {
ind = measConfig->measIdToAddModList->list.array[i]->measId;
if (rrc->MeasId[ind - 1]) {
LOG_D(NR_RRC, "Modifying Measurement ID %ld\n", ind - 1);
memcpy(rrc->MeasId[ind - 1], (char *)measConfig->measIdToAddModList->list.array[i], sizeof(NR_MeasIdToAddMod_t));
} else {
LOG_D(NR_RRC, "Adding Measurement ID %ld %p\n", ind - 1, measConfig->measIdToAddModList->list.array[i]);
rrc->MeasId[ind - 1] = measConfig->measIdToAddModList->list.array[i];
}
}
}
if (measConfig->quantityConfig != NULL) {
if (rrc->QuantityConfig) {
LOG_D(NR_RRC, "Modifying Quantity Configuration \n");
memcpy(rrc->QuantityConfig, (char *)measConfig->quantityConfig, sizeof(NR_QuantityConfig_t));
} else {
LOG_D(NR_RRC, "Adding Quantity configuration\n");
rrc->QuantityConfig = measConfig->quantityConfig;
}
}
if (measConfig->measGapConfig != NULL) {
if (rrc->measGapConfig) {
memcpy(rrc->measGapConfig, (char *)measConfig->measGapConfig, sizeof(NR_MeasGapConfig_t));
} else {
rrc->measGapConfig = measConfig->measGapConfig;
}
}
if (measConfig->s_MeasureConfig) {
if (measConfig->s_MeasureConfig->present == NR_MeasConfig__s_MeasureConfig_PR_ssb_RSRP) {
rrc->s_measure = measConfig->s_MeasureConfig->choice.ssb_RSRP;
} else if (measConfig->s_MeasureConfig->present == NR_MeasConfig__s_MeasureConfig_PR_csi_RSRP) {
rrc->s_measure = measConfig->s_MeasureConfig->choice.csi_RSRP;
}
}
}
static void nr_rrc_ue_process_RadioBearerConfig(NR_UE_RRC_INST_t *ue_rrc,
rrcPerNB_t *rrcNB,
NR_RadioBearerConfig_t *const radioBearerConfig)
{
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_RadioBearerConfig, (const void *)radioBearerConfig);
if (radioBearerConfig->srb3_ToRelease)
nr_pdcp_release_srb(ue_rrc->ue_id, 3);
uint8_t kRRCenc[16] = {0};
uint8_t kRRCint[16] = {0};
if (ue_rrc->as_security_activated) {
if (radioBearerConfig->securityConfig != NULL) {
// When the field is not included, continue to use the currently configured keyToUse
if (radioBearerConfig->securityConfig->keyToUse) {
AssertFatal(*radioBearerConfig->securityConfig->keyToUse == NR_SecurityConfig__keyToUse_master,
"Secondary key usage seems not to be implemented\n");
ue_rrc->keyToUse = *radioBearerConfig->securityConfig->keyToUse;
}
// When the field is not included, continue to use the currently configured security algorithm
if (radioBearerConfig->securityConfig->securityAlgorithmConfig) {
ue_rrc->cipheringAlgorithm = radioBearerConfig->securityConfig->securityAlgorithmConfig->cipheringAlgorithm;
ue_rrc->integrityProtAlgorithm = *radioBearerConfig->securityConfig->securityAlgorithmConfig->integrityProtAlgorithm;
}
}
nr_derive_key(RRC_ENC_ALG, ue_rrc->cipheringAlgorithm, ue_rrc->kgnb, kRRCenc);
nr_derive_key(RRC_INT_ALG, ue_rrc->integrityProtAlgorithm, ue_rrc->kgnb, kRRCint);
}
if (radioBearerConfig->srb_ToAddModList != NULL) {
for (int cnt = 0; cnt < radioBearerConfig->srb_ToAddModList->list.count; cnt++) {
struct NR_SRB_ToAddMod *srb = radioBearerConfig->srb_ToAddModList->list.array[cnt];
if (rrcNB->Srb[srb->srb_Identity] == RB_NOT_PRESENT)
add_srb(false,
ue_rrc->ue_id,
radioBearerConfig->srb_ToAddModList->list.array[cnt],
ue_rrc->cipheringAlgorithm,
ue_rrc->integrityProtAlgorithm,
kRRCenc,
kRRCint);
else {
AssertFatal(srb->discardOnPDCP == NULL, "discardOnPDCP not yet implemented\n");
AssertFatal(srb->reestablishPDCP == NULL, "reestablishPDCP not yet implemented\n");
if (srb->pdcp_Config && srb->pdcp_Config->t_Reordering)
nr_pdcp_reconfigure_srb(ue_rrc->ue_id, srb->srb_Identity, *srb->pdcp_Config->t_Reordering);
}
rrcNB->Srb[srb->srb_Identity] = RB_ESTABLISHED;
}
}
if (radioBearerConfig->drb_ToReleaseList) {
for (int cnt = 0; cnt < radioBearerConfig->drb_ToReleaseList->list.count; cnt++) {
NR_DRB_Identity_t *DRB_id = radioBearerConfig->drb_ToReleaseList->list.array[cnt];
if (DRB_id)
nr_pdcp_release_drb(ue_rrc->ue_id, *DRB_id);
}
}
// Establish DRBs if present
if (radioBearerConfig->drb_ToAddModList != NULL) {
for (int cnt = 0; cnt < radioBearerConfig->drb_ToAddModList->list.count; cnt++) {
struct NR_DRB_ToAddMod *drb = radioBearerConfig->drb_ToAddModList->list.array[cnt];
int DRB_id = drb->drb_Identity;
if (rrcNB->status_DRBs[DRB_id] == RB_ESTABLISHED) {
AssertFatal(drb->reestablishPDCP == NULL, "reestablishPDCP not yet implemented\n");
AssertFatal(drb->recoverPDCP == NULL, "recoverPDCP not yet implemented\n");
NR_SDAP_Config_t *sdap_Config = drb->cnAssociation ? drb->cnAssociation->choice.sdap_Config : NULL;
if (drb->pdcp_Config || sdap_Config)
nr_pdcp_reconfigure_drb(ue_rrc->ue_id, DRB_id, drb->pdcp_Config, sdap_Config);
if (drb->cnAssociation)
AssertFatal(drb->cnAssociation->choice.sdap_Config == NULL, "SDAP reconfiguration not yet implemented\n");
} else {
rrcNB->status_DRBs[DRB_id] = RB_ESTABLISHED;
add_drb(false,
ue_rrc->ue_id,
radioBearerConfig->drb_ToAddModList->list.array[cnt],
ue_rrc->cipheringAlgorithm,
ue_rrc->integrityProtAlgorithm,
kRRCenc,
kRRCint);
}
}
} // drb_ToAddModList //
ue_rrc->nrRrcState = RRC_STATE_CONNECTED_NR;
LOG_I(NR_RRC, "State = NR_RRC_CONNECTED\n");
}
static void nr_rrc_ue_generate_RRCReconfigurationComplete(NR_UE_RRC_INST_t *rrc, const int srb_id, const uint8_t Transaction_id)
{
uint8_t buffer[32], size;
size = do_NR_RRCReconfigurationComplete(buffer, sizeof(buffer), Transaction_id);
LOG_I(NR_RRC, " Logical Channel UL-DCCH (SRB1), Generating RRCReconfigurationComplete (bytes %d)\n", size);
AssertFatal(srb_id == 1 || srb_id == 3, "Invalid SRB ID %d\n", srb_id);
LOG_D(RLC,
"PDCP_DATA_REQ/%d Bytes (RRCReconfigurationComplete) "
"--->][PDCP][RB %02d]\n",
size,
srb_id);
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, size, buffer, deliver_pdu_srb_rlc, NULL);
}
static int nr_rrc_ue_decode_dcch(NR_UE_RRC_INST_t *rrc,
const srb_id_t Srb_id,
const uint8_t *const Buffer,
size_t Buffer_size,
const uint8_t gNB_indexP)
{
NR_DL_DCCH_Message_t *dl_dcch_msg = NULL;
if (Srb_id != 1 && Srb_id != 2) {
LOG_E(NR_RRC, "Received message on DL-DCCH (SRB%ld), should not have ...\n", Srb_id);
}
LOG_D(NR_RRC, "Decoding DL-DCCH Message\n");
asn_dec_rval_t dec_rval = uper_decode(NULL, &asn_DEF_NR_DL_DCCH_Message, (void **)&dl_dcch_msg, Buffer, Buffer_size, 0, 0);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0)) {
LOG_E(NR_RRC, "Failed to decode DL-DCCH (%zu bytes)\n", dec_rval.consumed);
ASN_STRUCT_FREE(asn_DEF_NR_DL_DCCH_Message, dl_dcch_msg);
return -1;
}
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_DL_DCCH_Message, (void *)dl_dcch_msg);
}
switch (dl_dcch_msg->message.present) {
case NR_DL_DCCH_MessageType_PR_c1: {
struct NR_DL_DCCH_MessageType__c1 *c1 = dl_dcch_msg->message.choice.c1;
switch (c1->present) {
case NR_DL_DCCH_MessageType__c1_PR_NOTHING:
LOG_I(NR_RRC, "Received PR_NOTHING on DL-DCCH-Message\n");
break;
case NR_DL_DCCH_MessageType__c1_PR_rrcReconfiguration: {
nr_rrc_ue_process_rrcReconfiguration(rrc, gNB_indexP, c1->choice.rrcReconfiguration);
nr_rrc_ue_generate_RRCReconfigurationComplete(rrc, Srb_id, c1->choice.rrcReconfiguration->rrc_TransactionIdentifier);
} break;
case NR_DL_DCCH_MessageType__c1_PR_rrcResume:
LOG_I(NR_RRC, "Received rrcResume on DL-DCCH-Message\n");
break;
case NR_DL_DCCH_MessageType__c1_PR_rrcRelease:
LOG_I(NR_RRC, "[UE %ld] Received RRC Release (gNB %d)\n", rrc->ue_id, gNB_indexP);
// TODO properly implement procedures in 5.3.8.3 of 38.331
NR_Release_Cause_t cause = OTHER;
nr_rrc_going_to_IDLE(rrc, cause, dl_dcch_msg->message.choice.c1->choice.rrcRelease);
break;
case NR_DL_DCCH_MessageType__c1_PR_ueCapabilityEnquiry:
LOG_I(NR_RRC, "Received Capability Enquiry (gNB %d)\n", gNB_indexP);
nr_rrc_ue_process_ueCapabilityEnquiry(rrc, c1->choice.ueCapabilityEnquiry);
break;
case NR_DL_DCCH_MessageType__c1_PR_rrcReestablishment:
LOG_I(NR_RRC, "Logical Channel DL-DCCH (SRB1), Received RRCReestablishment\n");
nr_rrc_ue_generate_rrcReestablishmentComplete(c1->choice.rrcReestablishment);
break;
case NR_DL_DCCH_MessageType__c1_PR_dlInformationTransfer: {
NR_DLInformationTransfer_t *dlInformationTransfer = c1->choice.dlInformationTransfer;
if (dlInformationTransfer->criticalExtensions.present
== NR_DLInformationTransfer__criticalExtensions_PR_dlInformationTransfer) {
/* This message hold a dedicated info NAS payload, forward it to NAS */
NR_DedicatedNAS_Message_t *dedicatedNAS_Message =
dlInformationTransfer->criticalExtensions.choice.dlInformationTransfer->dedicatedNAS_Message;
MessageDef *ittiMsg = itti_alloc_new_message(TASK_RRC_NRUE, 0, NAS_DOWNLINK_DATA_IND);
NasDlDataInd *msg = &NAS_DOWNLINK_DATA_IND(ittiMsg);
msg->UEid = rrc->ue_id;
msg->nasMsg.length = dedicatedNAS_Message->size;
msg->nasMsg.data = dedicatedNAS_Message->buf;
itti_send_msg_to_task(TASK_NAS_NRUE, rrc->ue_id, ittiMsg);
dedicatedNAS_Message->buf = NULL; // to keep the buffer, up to NAS to free it
}
} break;
case NR_DL_DCCH_MessageType__c1_PR_mobilityFromNRCommand:
case NR_DL_DCCH_MessageType__c1_PR_dlDedicatedMessageSegment_r16:
case NR_DL_DCCH_MessageType__c1_PR_ueInformationRequest_r16:
case NR_DL_DCCH_MessageType__c1_PR_dlInformationTransferMRDC_r16:
case NR_DL_DCCH_MessageType__c1_PR_loggedMeasurementConfiguration_r16:
case NR_DL_DCCH_MessageType__c1_PR_spare3:
case NR_DL_DCCH_MessageType__c1_PR_spare2:
case NR_DL_DCCH_MessageType__c1_PR_spare1:
case NR_DL_DCCH_MessageType__c1_PR_counterCheck:
break;
case NR_DL_DCCH_MessageType__c1_PR_securityModeCommand:
LOG_I(NR_RRC, "Received securityModeCommand (gNB %d)\n", gNB_indexP);
nr_rrc_ue_process_securityModeCommand(rrc, c1->choice.securityModeCommand, gNB_indexP);
break;
}
} break;
default:
break;
}
// release memory allocation
SEQUENCE_free(&asn_DEF_NR_DL_DCCH_Message, (void *)dl_dcch_msg, 1);
return 0;
}
void nr_rrc_handle_ra_indication(NR_UE_RRC_INST_t *rrc, bool ra_succeeded)
{
NR_UE_Timers_Constants_t *timers = &rrc->timers_and_constants;
if (ra_succeeded && is_nr_timer_active(timers->T304)) {
// successful Random Access procedure triggered by reconfigurationWithSync
nr_timer_stop(&timers->T304);
// TODO handle the rest of procedures as described in 5.3.5.3 for when
// reconfigurationWithSync is included in spCellConfig
}
}
void *rrc_nrue_task(void *args_p)
{
itti_mark_task_ready(TASK_RRC_NRUE);
while (1) {
rrc_nrue(NULL);
}
}
void *rrc_nrue(void *notUsed)
{
MessageDef *msg_p = NULL;
itti_receive_msg(TASK_RRC_NRUE, &msg_p);
instance_t instance = ITTI_MSG_DESTINATION_INSTANCE(msg_p);
LOG_D(NR_RRC, "[UE %ld] Received %s\n", instance, ITTI_MSG_NAME(msg_p));
NR_UE_RRC_INST_t *rrc = &NR_UE_rrc_inst[instance];
AssertFatal(instance == rrc->ue_id, "Instance %ld received from ITTI doesn't matach with UE-ID %ld\n", instance, rrc->ue_id);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
LOG_W(NR_RRC, " *** Exiting RRC thread\n");
itti_exit_task();
break;
case MESSAGE_TEST:
break;
case NR_RRC_MAC_SYNC_IND: {
nr_sync_msg_t sync_msg = NR_RRC_MAC_SYNC_IND(msg_p).in_sync ? IN_SYNC : OUT_OF_SYNC;
NR_UE_Timers_Constants_t *tac = &rrc->timers_and_constants;
handle_rlf_sync(tac, sync_msg);
} break;
case NRRRC_FRAME_PROCESS:
LOG_D(NR_RRC, "Received %s: frame %d\n", ITTI_MSG_NAME(msg_p), NRRRC_FRAME_PROCESS(msg_p).frame);
// increase the timers every 10ms (every new frame)
nr_rrc_handle_timers(rrc);
NR_UE_RRC_SI_INFO *SInfo = &rrc->perNB[NRRRC_FRAME_PROCESS(msg_p).gnb_id].SInfo;
nr_rrc_SI_timers(SInfo);
break;
case NR_RRC_MAC_MSG3_IND:
nr_rrc_handle_msg3_indication(rrc, NR_RRC_MAC_MSG3_IND(msg_p).rnti);
break;
case NR_RRC_MAC_RA_IND:
LOG_D(NR_RRC,
"[UE %ld] Received %s: frame %d RA %s\n",
rrc->ue_id,
ITTI_MSG_NAME(msg_p),
NR_RRC_MAC_RA_IND(msg_p).frame,
NR_RRC_MAC_RA_IND(msg_p).RA_succeeded ? "successful" : "failed");
nr_rrc_handle_ra_indication(rrc, NR_RRC_MAC_RA_IND(msg_p).RA_succeeded);
break;
case NR_RRC_MAC_BCCH_DATA_IND:
LOG_D(NR_RRC, "[UE %ld] Received %s: gNB %d\n", rrc->ue_id, ITTI_MSG_NAME(msg_p), NR_RRC_MAC_BCCH_DATA_IND(msg_p).gnb_index);
NRRrcMacBcchDataInd *bcch = &NR_RRC_MAC_BCCH_DATA_IND(msg_p);
if (bcch->is_bch)
nr_rrc_ue_decode_NR_BCCH_BCH_Message(rrc, bcch->gnb_index, bcch->sdu, bcch->sdu_size);
else
nr_rrc_ue_decode_NR_BCCH_DL_SCH_Message(rrc, bcch->gnb_index, bcch->sdu, bcch->sdu_size, bcch->rsrq, bcch->rsrp);
break;
case NR_RRC_MAC_SBCCH_DATA_IND:
LOG_D(NR_RRC, "[UE %ld] Received %s: gNB %d\n", instance, ITTI_MSG_NAME(msg_p), NR_RRC_MAC_SBCCH_DATA_IND(msg_p).gnb_index);
NRRrcMacSBcchDataInd *sbcch = &NR_RRC_MAC_SBCCH_DATA_IND(msg_p);
nr_rrc_ue_decode_NR_SBCCH_SL_BCH_Message(rrc, sbcch->gnb_index,sbcch->frame, sbcch->slot, sbcch->sdu,
sbcch->sdu_size, sbcch->rx_slss_id);
break;
case NR_RRC_MAC_CCCH_DATA_IND: {
NRRrcMacCcchDataInd *ind = &NR_RRC_MAC_CCCH_DATA_IND(msg_p);
nr_rrc_ue_decode_ccch(rrc, ind, 0);
} break;
case NR_RRC_DCCH_DATA_IND:
nr_rrc_ue_decode_dcch(rrc,
NR_RRC_DCCH_DATA_IND(msg_p).dcch_index,
NR_RRC_DCCH_DATA_IND(msg_p).sdu_p,
NR_RRC_DCCH_DATA_IND(msg_p).sdu_size,
NR_RRC_DCCH_DATA_IND(msg_p).gNB_index);
break;
case NAS_KENB_REFRESH_REQ:
memcpy(rrc->kgnb, NAS_KENB_REFRESH_REQ(msg_p).kenb, sizeof(rrc->kgnb));
break;
case NAS_DETACH_REQ:
if (!NAS_DETACH_REQ(msg_p).wait_release) {
rrc->nrRrcState = RRC_STATE_DETACH_NR;
NR_Release_Cause_t release_cause = OTHER;
nr_rrc_going_to_IDLE(rrc, release_cause, NULL);
}
break;
case NAS_UPLINK_DATA_REQ: {
uint32_t length;
uint8_t *buffer;
NasUlDataReq *req = &NAS_UPLINK_DATA_REQ(msg_p);
/* Create message for PDCP (ULInformationTransfer_t) */
length = do_NR_ULInformationTransfer(&buffer, req->nasMsg.length, req->nasMsg.data);
/* Transfer data to PDCP */
// check if SRB2 is created, if yes request data_req on SRB2
// error: the remote gNB is hardcoded here
rb_id_t srb_id = rrc->perNB[0].Srb[2] == RB_ESTABLISHED ? 2 : 1;
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, length, buffer, deliver_pdu_srb_rlc, NULL);
break;
}
default:
LOG_E(NR_RRC, "[UE %ld] Received unexpected message %s\n", rrc->ue_id, ITTI_MSG_NAME(msg_p));
break;
}
LOG_D(NR_RRC, "[UE %ld] RRC Status %d\n", rrc->ue_id, rrc->nrRrcState);
int result = itti_free(ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal(result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
return NULL;
}
void nr_rrc_ue_process_sidelink_radioResourceConfig(NR_SetupRelease_SL_ConfigDedicatedNR_r16_t *sl_ConfigDedicatedNR)
{
//process sl_CommConfig, configure MAC/PHY for transmitting SL communication (RRC_CONNECTED)
if (sl_ConfigDedicatedNR != NULL) {
switch (sl_ConfigDedicatedNR->present){
case NR_SetupRelease_SL_ConfigDedicatedNR_r16_PR_setup:
//TODO
break;
case NR_SetupRelease_SL_ConfigDedicatedNR_r16_PR_release:
break;
case NR_SetupRelease_SL_ConfigDedicatedNR_r16_PR_NOTHING:
break;
default:
break;
}
}
}
static void nr_rrc_ue_process_ueCapabilityEnquiry(NR_UE_RRC_INST_t *rrc, NR_UECapabilityEnquiry_t *UECapabilityEnquiry)
{
NR_UL_DCCH_Message_t ul_dcch_msg = {0};
//
LOG_I(NR_RRC, "Receiving from SRB1 (DL-DCCH), Processing UECapabilityEnquiry\n");
ul_dcch_msg.message.present = NR_UL_DCCH_MessageType_PR_c1;
asn1cCalloc(ul_dcch_msg.message.choice.c1, c1);
c1->present = NR_UL_DCCH_MessageType__c1_PR_ueCapabilityInformation;
asn1cCalloc(c1->choice.ueCapabilityInformation, info);
info->rrc_TransactionIdentifier = UECapabilityEnquiry->rrc_TransactionIdentifier;
NR_UE_CapabilityRAT_Container_t ue_CapabilityRAT_Container = {.rat_Type = NR_RAT_Type_nr};
char *file_path = rrc->uecap_file;
FILE *f = NULL;
if (file_path)
f = fopen(file_path, "r");
if(f){
char UE_NR_Capability_xer[65536];
size_t size = fread(UE_NR_Capability_xer, 1, sizeof UE_NR_Capability_xer, f);
if (size == 0 || size == sizeof UE_NR_Capability_xer) {
LOG_E(NR_RRC, "UE Capabilities XER file %s is too large (%ld)\n", file_path, size);
return;
}
asn_dec_rval_t dec_rval =
xer_decode(0, &asn_DEF_NR_UE_NR_Capability, (void *)&rrc->UECap.UE_NR_Capability, UE_NR_Capability_xer, size);
assert(dec_rval.code == RC_OK);
}
else {
rrc->UECap.UE_NR_Capability = CALLOC(1, sizeof(NR_UE_NR_Capability_t));
asn1cSequenceAdd(rrc->UECap.UE_NR_Capability->rf_Parameters.supportedBandListNR.list, NR_BandNR_t, nr_bandnr);
nr_bandnr->bandNR = 1;
}
xer_fprint(stdout, &asn_DEF_NR_UE_NR_Capability, (void *)rrc->UECap.UE_NR_Capability);
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_NR_UE_NR_Capability,
NULL,
(void *)rrc->UECap.UE_NR_Capability,
&rrc->UECap.sdu[0],
MAX_UE_NR_CAPABILITY_SIZE);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
rrc->UECap.sdu_size = (enc_rval.encoded + 7) / 8;
LOG_I(PHY, "[RRC]UE NR Capability encoded, %d bytes (%zd bits)\n", rrc->UECap.sdu_size, enc_rval.encoded + 7);
OCTET_STRING_fromBuf(&ue_CapabilityRAT_Container.ue_CapabilityRAT_Container, (const char *)rrc->UECap.sdu, rrc->UECap.sdu_size);
NR_UECapabilityEnquiry_IEs_t *ueCapabilityEnquiry_ie = UECapabilityEnquiry->criticalExtensions.choice.ueCapabilityEnquiry;
if (get_softmodem_params()->nsa == 1) {
OCTET_STRING_t *requestedFreqBandsNR = ueCapabilityEnquiry_ie->ue_CapabilityEnquiryExt;
nsa_sendmsg_to_lte_ue(requestedFreqBandsNR->buf, requestedFreqBandsNR->size, UE_CAPABILITY_INFO);
}
// ue_CapabilityRAT_Container.ueCapabilityRAT_Container.buf = UE_rrc_inst[ue_mod_idP].UECapability;
// ue_CapabilityRAT_Container.ueCapabilityRAT_Container.size = UE_rrc_inst[ue_mod_idP].UECapability_size;
AssertFatal(UECapabilityEnquiry->criticalExtensions.present == NR_UECapabilityEnquiry__criticalExtensions_PR_ueCapabilityEnquiry,
"UECapabilityEnquiry->criticalExtensions.present (%d) != UECapabilityEnquiry__criticalExtensions_PR_c1 (%d)\n",
UECapabilityEnquiry->criticalExtensions.present,NR_UECapabilityEnquiry__criticalExtensions_PR_ueCapabilityEnquiry);
NR_UECapabilityInformation_t *ueCapabilityInformation = ul_dcch_msg.message.choice.c1->choice.ueCapabilityInformation;
ueCapabilityInformation->criticalExtensions.present = NR_UECapabilityInformation__criticalExtensions_PR_ueCapabilityInformation;
asn1cCalloc(ueCapabilityInformation->criticalExtensions.choice.ueCapabilityInformation, infoIE);
asn1cCalloc(infoIE->ue_CapabilityRAT_ContainerList, UEcapList);
UEcapList->list.count = 0;
for (int i = 0; i < ueCapabilityEnquiry_ie->ue_CapabilityRAT_RequestList.list.count; i++) {
if (ueCapabilityEnquiry_ie->ue_CapabilityRAT_RequestList.list.array[i]->rat_Type == NR_RAT_Type_nr) {
asn1cSeqAdd(&UEcapList->list, &ue_CapabilityRAT_Container);
uint8_t buffer[500];
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_NR_UL_DCCH_Message, NULL, (void *)&ul_dcch_msg, buffer, 500);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %jd)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_UL_DCCH_Message, (void *)&ul_dcch_msg);
}
LOG_I(NR_RRC, "UECapabilityInformation Encoded %zd bits (%zd bytes)\n",enc_rval.encoded,(enc_rval.encoded+7)/8);
int srb_id = 1; // UECapabilityInformation on SRB1
nr_pdcp_data_req_srb(rrc->ue_id, srb_id, 0, (enc_rval.encoded + 7) / 8, buffer, deliver_pdu_srb_rlc, NULL);
}
}
}
static void nr_rrc_ue_generate_rrcReestablishmentComplete(NR_RRCReestablishment_t *rrcReestablishment)
//-----------------------------------------------------------------------------
{
uint8_t buffer[RRC_BUFFER_SIZE] = {0};
int size = do_RRCReestablishmentComplete(buffer, RRC_BUFFER_SIZE,
rrcReestablishment->rrc_TransactionIdentifier);
LOG_I(NR_RRC, "[RAPROC] Logical Channel UL-DCCH (SRB1), Generating RRCReestablishmentComplete (bytes %d)\n", size);
}
void *recv_msgs_from_lte_ue(void *args_p)
{
itti_mark_task_ready (TASK_RRC_NSA_NRUE);
int from_lte_ue_fd = get_from_lte_ue_fd();
for (;;)
{
nsa_msg_t msg;
int recvLen = recvfrom(from_lte_ue_fd, &msg, sizeof(msg),
MSG_WAITALL | MSG_TRUNC, NULL, NULL);
if (recvLen == -1)
{
LOG_E(NR_RRC, "%s: recvfrom: %s\n", __func__, strerror(errno));
continue;
}
if (recvLen > sizeof(msg))
{
LOG_E(NR_RRC, "%s: Received truncated message %d\n", __func__, recvLen);
continue;
}
process_lte_nsa_msg(NR_UE_rrc_inst, &msg, recvLen);
}
return NULL;
}
static void nsa_rrc_ue_process_ueCapabilityEnquiry(void)
{
NR_UE_NR_Capability_t *UE_Capability_nr = NR_UE_rrc_inst[0].UECap.UE_NR_Capability = CALLOC(1, sizeof(NR_UE_NR_Capability_t));
NR_BandNR_t *nr_bandnr = CALLOC(1, sizeof(NR_BandNR_t));
nr_bandnr->bandNR = 78;
asn1cSeqAdd(&UE_Capability_nr->rf_Parameters.supportedBandListNR.list, nr_bandnr);
OAI_NR_UECapability_t *UECap = CALLOC(1, sizeof(OAI_NR_UECapability_t));
UECap->UE_NR_Capability = UE_Capability_nr;
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_NR_UE_NR_Capability,
NULL,
(void *)UE_Capability_nr,
&UECap->sdu[0],
MAX_UE_NR_CAPABILITY_SIZE);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
UECap->sdu_size = (enc_rval.encoded + 7) / 8;
LOG_A(NR_RRC, "[NR_RRC] NRUE Capability encoded, %d bytes (%zd bits)\n",
UECap->sdu_size, enc_rval.encoded + 7);
NR_UE_CapabilityRAT_Container_t ue_CapabilityRAT_Container;
memset(&ue_CapabilityRAT_Container, 0, sizeof(NR_UE_CapabilityRAT_Container_t));
ue_CapabilityRAT_Container.rat_Type = NR_RAT_Type_nr;
OCTET_STRING_fromBuf(&ue_CapabilityRAT_Container.ue_CapabilityRAT_Container,
(const char *)NR_UE_rrc_inst[0].UECap.sdu,
NR_UE_rrc_inst[0].UECap.sdu_size);
nsa_sendmsg_to_lte_ue(ue_CapabilityRAT_Container.ue_CapabilityRAT_Container.buf,
ue_CapabilityRAT_Container.ue_CapabilityRAT_Container.size,
NRUE_CAPABILITY_INFO);
}
static void process_lte_nsa_msg(NR_UE_RRC_INST_t *rrc, nsa_msg_t *msg, int msg_len)
{
if (msg_len < sizeof(msg->msg_type))
{
LOG_E(RRC, "Msg_len = %d\n", msg_len);
return;
}
LOG_D(NR_RRC, "Processing an NSA message\n");
Rrc_Msg_Type_t msg_type = msg->msg_type;
uint8_t *const msg_buffer = msg->msg_buffer;
msg_len -= sizeof(msg->msg_type);
switch (msg_type)
{
case UE_CAPABILITY_ENQUIRY:
{
LOG_D(NR_RRC, "We are processing a %d message \n", msg_type);
NR_FreqBandList_t *nr_freq_band_list = NULL;
asn_dec_rval_t dec_rval = uper_decode_complete(NULL,
&asn_DEF_NR_FreqBandList,
(void **)&nr_freq_band_list,
msg_buffer,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0))
{
SEQUENCE_free(&asn_DEF_NR_FreqBandList, nr_freq_band_list, ASFM_FREE_EVERYTHING);
LOG_E(RRC, "Failed to decode UECapabilityInfo (%zu bits)\n", dec_rval.consumed);
break;
}
for (int i = 0; i < nr_freq_band_list->list.count; i++)
{
LOG_D(NR_RRC, "Received NR band information: %ld.\n",
nr_freq_band_list->list.array[i]->choice.bandInformationNR->bandNR);
}
int dummy_msg = 0;// whatever piece of data, it will never be used by sendee
LOG_D(NR_RRC, "We are calling nsa_sendmsg_to_lte_ue to send a UE_CAPABILITY_DUMMY\n");
nsa_sendmsg_to_lte_ue(&dummy_msg, sizeof(dummy_msg), UE_CAPABILITY_DUMMY);
LOG_A(NR_RRC, "Sent initial NRUE Capability response to LTE UE\n");
break;
}
case NRUE_CAPABILITY_ENQUIRY:
{
LOG_I(NR_RRC, "We are processing a %d message \n", msg_type);
NR_FreqBandList_t *nr_freq_band_list = NULL;
asn_dec_rval_t dec_rval = uper_decode_complete(NULL,
&asn_DEF_NR_FreqBandList,
(void **)&nr_freq_band_list,
msg_buffer,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0))
{
SEQUENCE_free(&asn_DEF_NR_FreqBandList, nr_freq_band_list, ASFM_FREE_EVERYTHING);
LOG_E(NR_RRC, "Failed to decode UECapabilityInfo (%zu bits)\n", dec_rval.consumed);
break;
}
LOG_I(NR_RRC, "Calling nsa_rrc_ue_process_ueCapabilityEnquiry\n");
nsa_rrc_ue_process_ueCapabilityEnquiry();
break;
}
case RRC_MEASUREMENT_PROCEDURE:
{
LOG_I(NR_RRC, "We are processing a %d message \n", msg_type);
LTE_MeasObjectToAddMod_t *nr_meas_obj = NULL;
asn_dec_rval_t dec_rval = uper_decode_complete(NULL,
&asn_DEF_NR_MeasObjectToAddMod,
(void **)&nr_meas_obj,
msg_buffer,
msg_len);
if ((dec_rval.code != RC_OK) && (dec_rval.consumed == 0))
{
SEQUENCE_free(&asn_DEF_NR_MeasObjectToAddMod, nr_meas_obj, ASFM_FREE_EVERYTHING);
LOG_E(RRC, "Failed to decode measurement object (%zu bits) %d\n", dec_rval.consumed, dec_rval.code);
break;
}
LOG_D(NR_RRC, "NR carrierFreq_r15 (ssb): %ld and sub carrier spacing:%ld\n",
nr_meas_obj->measObject.choice.measObjectNR_r15.carrierFreq_r15,
nr_meas_obj->measObject.choice.measObjectNR_r15.rs_ConfigSSB_r15.subcarrierSpacingSSB_r15);
start_oai_nrue_threads();
break;
}
case RRC_CONFIG_COMPLETE_REQ:
{
struct msg {
uint32_t RadioBearer_size;
uint32_t SecondaryCellGroup_size;
uint8_t trans_id;
uint8_t padding[3];
uint8_t buffer[];
} hdr;
AssertFatal(msg_len >= sizeof(hdr), "Bad received msg\n");
memcpy(&hdr, msg_buffer, sizeof(hdr));
LOG_I(NR_RRC, "We got an RRC_CONFIG_COMPLETE_REQ\n");
uint32_t nr_RadioBearer_size = hdr.RadioBearer_size;
uint32_t nr_SecondaryCellGroup_size = hdr.SecondaryCellGroup_size;
AssertFatal(sizeof(hdr) + nr_RadioBearer_size + nr_SecondaryCellGroup_size <= msg_len,
"nr_RadioBearerConfig1_r15 size %u nr_SecondaryCellGroupConfig_r15 size %u sizeof(hdr) %zu, msg_len = %d\n",
nr_RadioBearer_size,
nr_SecondaryCellGroup_size,
sizeof(hdr), msg_len);
NR_RRC_TransactionIdentifier_t t_id = hdr.trans_id;
LOG_I(NR_RRC, "nr_RadioBearerConfig1_r15 size %d nr_SecondaryCellGroupConfig_r15 size %d t_id %ld\n",
nr_RadioBearer_size,
nr_SecondaryCellGroup_size,
t_id);
uint8_t *nr_RadioBearer_buffer = msg_buffer + offsetof(struct msg, buffer);
uint8_t *nr_SecondaryCellGroup_buffer = nr_RadioBearer_buffer + nr_RadioBearer_size;
process_nsa_message(NR_UE_rrc_inst, nr_SecondaryCellGroupConfig_r15, nr_SecondaryCellGroup_buffer,
nr_SecondaryCellGroup_size);
process_nsa_message(NR_UE_rrc_inst, nr_RadioBearerConfigX_r15, nr_RadioBearer_buffer, nr_RadioBearer_size);
LOG_I(NR_RRC, "Calling do_NR_RRCReconfigurationComplete. t_id %ld \n", t_id);
uint8_t buffer[RRC_BUF_SIZE];
size_t size = do_NR_RRCReconfigurationComplete_for_nsa(buffer, sizeof(buffer), t_id);
nsa_sendmsg_to_lte_ue(buffer, size, NR_RRC_CONFIG_COMPLETE_REQ);
break;
}
case OAI_TUN_IFACE_NSA:
{
LOG_I(NR_RRC, "We got an OAI_TUN_IFACE_NSA!!\n");
char cmd_line[RRC_BUF_SIZE];
memcpy(cmd_line, msg_buffer, sizeof(cmd_line));
LOG_D(NR_RRC, "Command line: %s\n", cmd_line);
if (background_system(cmd_line) != 0)
{
LOG_E(NR_RRC, "ESM-PROC - failed command '%s'", cmd_line);
}
break;
}
default:
LOG_E(NR_RRC, "No NSA Message Found\n");
}
}
void nr_rrc_going_to_IDLE(NR_UE_RRC_INST_t *rrc,
NR_Release_Cause_t release_cause,
NR_RRCRelease_t *RRCRelease)
{
NR_UE_Timers_Constants_t *tac = &rrc->timers_and_constants;
// if going to RRC_IDLE was triggered by reception
// of the RRCRelease message including a waitTime
NR_RejectWaitTime_t *waitTime = NULL;
if (RRCRelease) {
struct NR_RRCRelease_IEs *rrcReleaseIEs = RRCRelease->criticalExtensions.choice.rrcRelease;
if(rrcReleaseIEs) {
waitTime = rrcReleaseIEs->nonCriticalExtension ?
rrcReleaseIEs->nonCriticalExtension->waitTime : NULL;
if (waitTime) {
nr_timer_stop(&tac->T302); // stop 302
// start timer T302 with the value set to the waitTime
int target = *waitTime * 1000; // waitTime is in seconds
nr_timer_setup(&tac->T302, target, 10);
nr_timer_start(&tac->T302);
// TODO inform upper layers that access barring is applicable
// for all access categories except categories '0' and '2'.
LOG_E(NR_RRC,"Go to IDLE. Handling RRCRelease message including a waitTime not implemented\n");
}
}
}
if (!waitTime) {
if (is_nr_timer_active(tac->T302)) {
nr_timer_stop(&tac->T302);
// TODO barring alleviation as in 5.3.14.4
// not implemented
LOG_E(NR_RRC,"Go to IDLE. Barring alleviation not implemented\n");
}
}
if (is_nr_timer_active(tac->T390)) {
nr_timer_stop(&tac->T390);
// TODO barring alleviation as in 5.3.14.4
// not implemented
LOG_E(NR_RRC,"Go to IDLE. Barring alleviation not implemented\n");
}
if (!RRCRelease && rrc->nrRrcState == RRC_STATE_INACTIVE_NR) {
// TODO discard the cell reselection priority information provided by the cellReselectionPriorities
// cell reselection priorities not implemented yet
nr_timer_stop(&tac->T320);
}
// Stop all the timers except T302, T320 and T325
nr_timer_stop(&tac->T300);
nr_timer_stop(&tac->T301);
nr_timer_stop(&tac->T304);
nr_timer_stop(&tac->T310);
nr_timer_stop(&tac->T311);
nr_timer_stop(&tac->T319);
// discard the UE Inactive AS context
// TODO there is no inactive AS context
// release the suspendConfig
// TODO suspendConfig not handled yet
// discard the keys (only kgnb is stored)
memset(rrc->kgnb, 0, sizeof(rrc->kgnb));
// release all radio resources, including release of the RLC entity,
// the MAC configuration and the associated PDCP entity
// and SDAP for all established RBs
for (int j = 0; j < NB_CNX_UE; j++) {
rrcPerNB_t *nb = &rrc->perNB[j];
for (int i = 0; i < MAX_DRBS_PER_UE; i++) {
if (nb->status_DRBs[i] != RB_NOT_PRESENT) {
nb->status_DRBs[i] = RB_NOT_PRESENT;
nr_pdcp_release_drb(rrc->ue_id, i);
}
}
for (int i = 1; i < NR_NUM_SRB; i++) {
if (nb->Srb[i] != RB_NOT_PRESENT) {
nb->Srb[i] = RB_NOT_PRESENT;
nr_pdcp_release_srb(rrc->ue_id, i);
}
}
for (int i = 0; i < NR_MAX_NUM_LCID; i++) {
if (nb->active_RLC_entity[i]) {
nb->active_RLC_entity[i] = false;
nr_rlc_release_entity(rrc->ue_id, i);
}
}
}
for (int i = 0; i < NB_CNX_UE; i++) {
rrcPerNB_t *nb = &rrc->perNB[i];
NR_UE_RRC_SI_INFO *SI_info = &nb->SInfo;
init_SI_timers(SI_info);
asn1cFreeStruc(asn_DEF_NR_SIB1, SI_info->sib1);
asn1cFreeStruc(asn_DEF_NR_SIB2, SI_info->sib2);
asn1cFreeStruc(asn_DEF_NR_SIB3, SI_info->sib3);
asn1cFreeStruc(asn_DEF_NR_SIB4, SI_info->sib4);
asn1cFreeStruc(asn_DEF_NR_SIB5, SI_info->sib5);
asn1cFreeStruc(asn_DEF_NR_SIB6, SI_info->sib6);
asn1cFreeStruc(asn_DEF_NR_SIB7, SI_info->sib7);
asn1cFreeStruc(asn_DEF_NR_SIB8, SI_info->sib8);
asn1cFreeStruc(asn_DEF_NR_SIB9, SI_info->sib9);
asn1cFreeStruc(asn_DEF_NR_SIB10_r16, SI_info->sib10);
asn1cFreeStruc(asn_DEF_NR_SIB11_r16, SI_info->sib11);
asn1cFreeStruc(asn_DEF_NR_SIB12_r16, SI_info->sib12);
asn1cFreeStruc(asn_DEF_NR_SIB13_r16, SI_info->sib13);
asn1cFreeStruc(asn_DEF_NR_SIB14_r16, SI_info->sib14);
}
// reset MAC
NR_UE_MAC_reset_cause_t cause = (rrc->nrRrcState == RRC_STATE_DETACH_NR) ? DETACH : GO_TO_IDLE;
nr_rrc_mac_config_req_reset(rrc->ue_id, cause);
// enter RRC_IDLE
LOG_I(NR_RRC, "RRC moved into IDLE state\n");
if (rrc->nrRrcState != RRC_STATE_DETACH_NR)
rrc->nrRrcState = RRC_STATE_IDLE_NR;
rrc->rnti = 0;
// Indicate the release of the RRC connection to upper layers
MessageDef *msg_p = itti_alloc_new_message(TASK_RRC_NRUE, 0, NR_NAS_CONN_RELEASE_IND);
NR_NAS_CONN_RELEASE_IND(msg_p).cause = release_cause;
itti_send_msg_to_task(TASK_NAS_NRUE, rrc->ue_id, msg_p);
}
void handle_t300_expiry(NR_UE_RRC_INST_t *rrc)
{
// reset MAC, release the MAC configuration
NR_UE_MAC_reset_cause_t cause = T300_EXPIRY;
nr_rrc_mac_config_req_reset(rrc->ue_id, cause);
// TODO handle connEstFailureControl
// TODO inform upper layers about the failure to establish the RRC connection
}
//This calls the sidelink preconf message after RRC, MAC instances are created.
void start_sidelink(int instance)
{
NR_UE_RRC_INST_t *rrc = &NR_UE_rrc_inst[instance];
if (get_softmodem_params()->sl_mode == 2) {
//Process the Sidelink Preconfiguration
rrc_ue_process_sidelink_Preconfiguration(rrc, get_softmodem_params()->sync_ref);
}
}
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