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fix(du/cu/rrc): use the correct MIB data structure

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Use the correct MIB data structure, MIB_t. This is required by 38.473,
and the LiteOn DU sends only that. So our CU needs to handle it, so
align the OAI DU as well.
This commit is contained in:
Giulio Carota
2024-05-06 11:34:29 +02:00
committed by Robert Schmidt
parent 1cefbdb87f
commit ae66ba7a7b
4 changed files with 31 additions and 24 deletions
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openair2/GNB_APP/gnb_config.c
+2 -1
View File
@@ -1181,7 +1181,8 @@ static f1ap_setup_req_t *RC_read_F1Setup(uint64_t id,
sys_info->mib = calloc(buf_len, sizeof(*sys_info->mib));
DevAssert(sys_info->mib != NULL);
DevAssert(mib != NULL);
sys_info->mib_length = encode_MIB_NR(mib, 0, sys_info->mib, buf_len);
// encode only the mib message itself
sys_info->mib_length = encode_MIB_NR_setup(mib->message.choice.mib, 0, sys_info->mib, buf_len);
DevAssert(sys_info->mib_length == buf_len);
DevAssert(sib1 != NULL);
openair2/RRC/NR/nr_rrc_config.c
+12
View File
@@ -1875,6 +1875,18 @@ int encode_MIB_NR(NR_BCCH_BCH_Message_t *mib, int frame, uint8_t *buf, int buf_s
return (enc_rval.encoded + 7) / 8;
}
int encode_MIB_NR_setup(NR_MIB_t *mib, int frame, uint8_t *buf, int buf_size)
{
DevAssert(mib != NULL);
uint8_t sfn_msb = (uint8_t)((frame >> 4) & 0x3f);
*mib->systemFrameNumber.buf = sfn_msb << 2;
asn_enc_rval_t enc_rval = uper_encode_to_buffer(&asn_DEF_NR_MIB, NULL, mib, buf, buf_size);
AssertFatal(enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n", enc_rval.failed_type->name, enc_rval.encoded);
LOG_D(NR_RRC, "Encoded MIB for frame %d sfn_msb %d, bits %lu\n", frame, sfn_msb, enc_rval.encoded);
return (enc_rval.encoded + 7) / 8;
}
NR_BCCH_DL_SCH_Message_t *get_SIB1_NR(const NR_ServingCellConfigCommon_t *scc, const f1ap_plmn_t *plmn, uint64_t cellID, int tac)
{
AssertFatal(cellID < (1l << 36), "cellID must fit within 36 bits, but is %lu\n", cellID);
openair2/RRC/NR/nr_rrc_config.h
+1
View File
@@ -55,6 +55,7 @@ void prepare_sim_uecap(NR_UE_NR_Capability_t *cap,
NR_BCCH_BCH_Message_t *get_new_MIB_NR(const NR_ServingCellConfigCommon_t *scc);
void free_MIB_NR(NR_BCCH_BCH_Message_t *mib);
int encode_MIB_NR(NR_BCCH_BCH_Message_t *mib, int frame, uint8_t *buf, int buf_size);
int encode_MIB_NR_setup(NR_MIB_t *mib, int frame, uint8_t *buf, int buf_size);
#define NR_MAX_SIB_LENGTH 2976 // 3GPP TS 38.331 section 5.2.1
openair2/RRC/NR/rrc_gNB_du.c
+16 -23
View File
@@ -49,35 +49,33 @@ static bool rrc_gNB_plmn_matches(const gNB_RRC_INST *rrc, const f1ap_served_cell
&& conf->mnc[0] == info->plmn.mnc;
}
static bool extract_sys_info(const f1ap_gnb_du_system_info_t *sys_info, NR_BCCH_BCH_Message_t **mib, NR_SIB1_t **sib1)
static bool extract_sys_info(const f1ap_gnb_du_system_info_t *sys_info, NR_MIB_t **mib, NR_SIB1_t **sib1)
{
DevAssert(sys_info != NULL);
DevAssert(mib != NULL);
DevAssert(sib1 != NULL);
asn_dec_rval_t dec_rval =
uper_decode_complete(NULL, &asn_DEF_NR_BCCH_BCH_Message, (void **)mib, sys_info->mib, sys_info->mib_length);
if (dec_rval.code != RC_OK || (*mib)->message.present != NR_BCCH_BCH_MessageType_PR_mib
|| (*mib)->message.choice.messageClassExtension == NULL) {
LOG_E(RRC, "Failed to decode NR_BCCH_BCH_MESSAGE (%zu bits) of DU\n", dec_rval.consumed);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, *mib);
asn_dec_rval_t dec_rval = uper_decode_complete(NULL, &asn_DEF_NR_MIB, (void **)mib, sys_info->mib, sys_info->mib_length);
if (dec_rval.code != RC_OK) {
LOG_E(RRC, "Failed to decode NR_MIB (%zu bits) of DU\n", dec_rval.consumed);
ASN_STRUCT_FREE(asn_DEF_NR_MIB, *mib);
return false;
}
if (sys_info->sib1) {
dec_rval = uper_decode_complete(NULL, &asn_DEF_NR_SIB1, (void **)sib1, sys_info->sib1, sys_info->sib1_length);
if (dec_rval.code != RC_OK) {
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, *mib);
ASN_STRUCT_FREE(asn_DEF_NR_MIB, *mib);
ASN_STRUCT_FREE(asn_DEF_NR_SIB1, *sib1);
LOG_E(RRC, "Failed to decode NR_SIB1 (%zu bits), rejecting DU\n", dec_rval.consumed);
return false;
}
}
if (LOG_DEBUGFLAG(DEBUG_ASN1))
xer_fprint(stdout, &asn_DEF_NR_BCCH_BCH_Message, *mib);
if (LOG_DEBUGFLAG(DEBUG_ASN1))
if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
xer_fprint(stdout, &asn_DEF_NR_MIB, *mib);
xer_fprint(stdout, &asn_DEF_NR_SIB1, *sib1);
}
return true;
}
@@ -145,7 +143,7 @@ void rrc_gNB_process_f1_setup_req(f1ap_setup_req_t *req, sctp_assoc_t assoc_id)
}
const f1ap_gnb_du_system_info_t *sys_info = req->cell[0].sys_info;
NR_BCCH_BCH_Message_t *mib = NULL;
NR_MIB_t *mib = NULL;
NR_SIB1_t *sib1 = NULL;
if (sys_info != NULL && sys_info->mib != NULL && !(sys_info->sib1 == NULL && get_softmodem_params()->sa)) {
@@ -170,12 +168,9 @@ void rrc_gNB_process_f1_setup_req(f1ap_setup_req_t *req, sctp_assoc_t assoc_id)
du->setup_req = calloc(1,sizeof(*du->setup_req));
AssertFatal(du->setup_req, "out of memory\n");
*du->setup_req = *req;
if (mib != NULL && sib1 != NULL) {
du->mib = mib->message.choice.mib;
mib->message.choice.mib = NULL;
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_MessageType, mib);
du->sib1 = sib1;
}
// MIB can be null and configured later via DU Configuration Update
du->mib = mib;
du->sib1 = sib1;
RB_INSERT(rrc_du_tree, &rrc->dus, du);
rrc->num_dus++;
@@ -184,7 +179,7 @@ void rrc_gNB_process_f1_setup_req(f1ap_setup_req_t *req, sctp_assoc_t assoc_id)
.nr_cellid = cell_info->nr_cellid,
.nrpci = cell_info->nr_pci,
.num_SI = 0,
};
};
f1ap_setup_resp_t resp = {.transaction_id = req->transaction_id,
.num_cells_to_activate = 1,
@@ -288,14 +283,12 @@ void rrc_gNB_process_f1_du_configuration_update(f1ap_gnb_du_configuration_update
if (sys_info->sib1 != NULL)
ASN_STRUCT_FREE(asn_DEF_NR_SIB1, du->sib1);
NR_BCCH_BCH_Message_t *mib = NULL;
NR_MIB_t *mib = NULL;
if (!extract_sys_info(sys_info, &mib, &du->sib1)) {
LOG_W(RRC, "cannot update sys_info for DU %ld\n", du->setup_req->gNB_DU_id);
} else {
DevAssert(mib != NULL);
du->mib = mib->message.choice.mib;
mib->message.choice.mib = NULL;
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_MessageType, mib);
du->mib = mib;
LOG_I(RRC, "update system information of DU %ld\n", du->setup_req->gNB_DU_id);
}
}